How to Reduce the Risk of Component Damage Between CNC Machining Operations
Manufacturing a component in accordance with technical documentation does not end when it is removed from the machine. During production, the component may be transported, set aside, inspected, clamped again, or transferred to subsequent processes. Each of these stages involves a risk of damaging previously machined surfaces. Even a small scratch, dented edge, or damaged thread can cause the component to no longer meet the requirements. That is why CNC machining involves not only performing each operation correctly, but also handling the component properly between operations. Where Does the Risk of Component Damage During CNC Machining Come From? As production progresses, more and more finished surfaces, holes, threads, and edges appear on the component and must be protected against accidental damage. The source of the problem does not have to be the CNC machining itself. Damage can occur while setting the component down, when two parts come into contact with each other, during transport between workstations, or when the component is clamped again. Residual chips can also be a problem, as they may leave marks on a previously finished surface. From our experience, the way a component is protected should be treated as part of the entire production process, especially for parts with high quality requirements. At Which Stages of CNC Machining Is the Component Most Exposed to Damage? The risk appears primarily when the component changes position or is transferred to the next workstation. For this reason, when planning the process, it is worth taking into account how the part will be moved and set aside. Transporting and Setting Components Aside Between Operations Between successive stages of CNC machining, direct contact between transported components should be limited. Placing several precisely machined parts directly on top of one another can lead to scratches, dents, or damaged edges. The storage method should be adapted to the geometry and weight of the part. Depending on the component, containers, separators, or specially prepared storage areas may be used to protect the most important surfaces. Workstation cleanliness is also important. A single chip left behind may be enough to leave a mark on a finished surface when a heavier component is placed on it. Inspection, Assembly and Additional Technological Processes A component can also be damaged during dimensional inspection, assembly, washing, or when being transferred to subsequent technological processes. Reference surfaces and functional surfaces require particular attention. Damage to them can affect not only the appearance of the component, but also subsequent operations, assembly, or the performance of the finished part. How to Protect a Component Between CNC Machining Operations Not all surfaces are equally exposed to damage. The protection method should therefore depend on the geometry of the component, the requirements in the documentation, and which operations have already been completed. The key is to determine which surfaces require special protection during support, clamping, and storage of the part. Protecting Machined and Reference Surfaces Surfaces that have already been machined to the required tolerance should be protected during subsequent CNC machining stages. This applies especially to surfaces with specified roughness requirements and reference surfaces used for subsequent setups. Damage to a technological reference surface can affect the positioning of the component during the next operation. A scratch on a functional surface, in turn, may require additional inspection or rework. In our work, we adapt the way a component is stored and transported to which surfaces have already been finished and what requirements they must meet until the end of the process. Protecting Edges, Holes and Threads Edges and threads are particularly vulnerable to mechanical damage. An impact during transport can dent an edge or damage the first turns of a thread, making later assembly more difficult. Protecting holes against chips and other contamination is also important, especially in the case of internal channels. You can read more about machining and inspecting threads in the article: “CNC Machining of Threaded Parts – How to Avoid the Most Common Threading and Thread Inspection Errors?”. How Does Process Organization Affect Component Safety After CNC Machining? Reducing the risk of damage should not depend solely on operator care. The organization of the entire process matters, from designated storage areas and transport between workstations to the storage of parts waiting for the next operation. In serial production, it is important to apply the same rules to all components. Proper arrangement and separation of parts reduces the possibility of contact between them and makes it easier to maintain order between successive production stages. From our experience, proper organization of component flow can significantly reduce the risk of damage without making the production process itself more complicated. What Should Be Done If Damage Is Detected Between Operations? Detecting damage between CNC machining stages does not always mean that the component must automatically be rejected. First, the location and nature of the damage should be assessed, along with its impact on the requirements specified in the technical documentation. This assessment should be carried out before the next operation begins so that work is not continued on a component that will ultimately be unable to meet the final requirements. Depending on the type of problem, rework, additional inspection, or withdrawal of the component from further production may be possible. You can read more about verifying component conformity in the article: “Quality control in CNC machining – how do we ensure precision at SIM Gdynia?”. Summary Protecting a component between successive operations has a direct impact on the final quality of production. Even correctly performed CNC machining will not guarantee that the component meets the requirements if previously finished surfaces are damaged during transport, storage, or subsequent technological operations. Proper surface protection, carefully planned transport, and good process organization help reduce this risk and preserve the quality of the component until the end of production. Are you planning to outsource CNC machining of demanding components? Contact us and send us your project documentation.
What Does CNC Machining of Eccentric Components Involve and Where Is It Used?
Eccentric components are used in mechanisms where one axis is intentionally offset relative to another. This type of solution is applied, among other things, where rotary motion needs to be converted into linear or oscillating motion, or where the position of a cooperating component needs to be adjusted. Producing such parts requires not only maintaining the correct dimensions, but also ensuring the precise position of the axes and surfaces in relation to one another. For this reason, CNC machining of eccentric components requires proper referencing, stable clamping, and the correct sequence of operations. What Are Eccentric Components and How Do They Differ from Axial Parts? In a typical axial component, the rotational surfaces share a common axis. In an eccentric component, at least one of them has an axis that is offset from the main axis of the part. The size of this offset is defined in the technical documentation and has a direct impact on how the component operates later. This type of geometry can be found, among other things, in eccentric shafts and journals, adjustment components, and parts of drive mechanisms. From a production perspective, it is important not only to achieve the required diameters, but also to maintain the specified axis offset and the correct relationship between the axes. These relationships are what distinguish machining eccentric components from standard axial parts. How Is CNC Machining of Eccentric Components Carried Out? The manufacturing method depends on the geometry, dimensions, material, and requirements specified in the documentation. The process may include turning, CNC milling, or a combination of several operations. Before production begins, the process engineer analyzes the position of individual surfaces, the referencing method, and the sequence in which they should be machined. The aim is to prepare the process so that each subsequent operation maintains the correct relationship to the previously machined features of the part. Part Setup and Determining the Machining Axis In the case of an eccentric surface, the axis of the machined section is located outside the main axis of the component. Therefore, the clamping method must take the required offset into account. In our work, we pay particular attention to establishing the correct reference surfaces during the first stages of CNC machining. A setup error can affect the position of subsequent surfaces, even if their individual dimensions are machined correctly. Turning and Milling Eccentric Surfaces Eccentric surfaces can be produced using different machining methods. For rotational components, offset-axis turning can be used, while CNC milling makes it possible to produce more complex geometries. The choice of CNC machining method also depends on the required tolerances, production quantity, tool access, and the ability to clamp the component securely. In more complex projects, it may be necessary to combine several machining operations. What Affects the Accuracy of CNC Machining of Eccentric Components? In eccentric components, not only the accuracy of individual dimensions matters, but also the position of the axes and surfaces relative to the defined references. The final result is influenced by the clamping method, component rigidity, operation sequence, and dimensional inspection after CNC machining. In serial production, it is equally important to maintain the same machining conditions for every component. Clamping, Rigidity and Process Stability The component must be clamped in a way that ensures a clearly defined position and sufficient rigidity during cutting. Insufficient stability can lead to vibration, poorer surface quality, and problems maintaining the required dimensions. From our experience, in the case of more demanding components, preparing the CNC program alone is not enough. An earlier analysis of the entire process and potential sources of error is equally important. Inspection of Axis Position and Dimensions Inspection should cover both the basic dimensions and the relative position of the machined surfaces. Depending on the technical documentation, this may include checking diameters, distances between axes, runout, and geometric tolerances. A component may have the correct diameter while still failing to meet the requirements for its position relative to the rest of the geometry. You can read more about component inspection in the article: “Quality control in CNC machining – how do we ensure precision at SIM Gdynia?”. The Most Common Challenges in CNC Machining of Eccentric Components One of the main challenges is maintaining the correct relationship between surfaces produced during different machining operations. Each new setup may introduce an additional deviation, which is why the machining sequence and referencing method are so important. The geometry of the component also matters. An offset center of gravity, limited rigidity of certain sections, or restricted tool access may require changes to the clamping method or cutting parameters. For larger production runs, an additional challenge is maintaining the same accuracy across all components. You can read more about preparing a stable production process in the article: “From documentation to stable production – the work of a technologist at SIM Gdynia”. Where Are Eccentric Components Used? Eccentric components are used where an axis offset is required to generate a specific motion or adjust the position of other parts of a mechanism. CNC machining makes it possible to produce such components both as individual parts and as part of repeatable serial production. Typical applications include: In each of these applications, the eccentric geometry performs a specific function, so the accuracy requirements should result from the actual operating conditions of the component. Summary CNC machining of eccentric components requires not only maintaining the correct dimensions, but above all ensuring the proper position of the axes and surfaces relative to one another. Proper referencing, stable clamping, the correct operation sequence, and final inspection of the component are all essential. A well-prepared process helps reduce the risk of errors and maintain the required repeatability both for individual components and for larger production batches. Do you need components with demanding geometry? Contact us. We will analyze your documentation and select the appropriate CNC machining method.
CNC Machining of Cast Components – How to Account for Surface Irregularities and Casting Variability?
Castings are widely used as semi-finished products for manufacturing components across many industries. They reduce the amount of material that must be removed and shorten machining time, but they also present manufacturing engineers with challenges that differ from those associated with rolled stock or bar material. With castings, the actual geometry of the workpiece may differ from the nominal CAD model. Surface irregularities, local distortions and variations between production batches mean that CNC machining requires careful process planning from the very beginning. How can you account for casting variability while maintaining the required quality of the finished component? Why Does CNC Machining of Cast Components Require a Different Approach? Unlike rolled or forged materials, every casting can differ slightly from the previous one. The shape and machining allowance distribution are not always identical. Even when castings are produced from the same documentation, small differences between individual parts may affect subsequent CNC machining operations. For the manufacturing engineer, this means evaluating not only the geometry of the finished component but also the actual condition of the casting itself. Decisions regarding datum selection, machining sequence and overall process preparation are made at this stage. When machining castings, process consistency is the key factor. A well-planned manufacturing strategy minimizes the influence of natural variations between castings and ensures repeatable production. For more than 45 years, we have been developing our expertise in manufacturing precision mechanical components, continuously investing in machining equipment, inspection capabilities and the development of our engineering team. This allows us to deliver demanding projects for customers across a wide range of industries. How Does Casting Variability Affect CNC Machining Preparation? Every machining process begins with evaluating the semi-finished workpiece. It is important not only to verify whether the casting matches the documentation but also whether sufficient machining allowance is available to produce all required surfaces according to specification. Already at this stage, it is possible to identify features that may affect the CNC machining process and determine the most appropriate manufacturing strategy. Machining Allowances and the Actual Position of Surfaces The nominal machining allowance specified in the documentation does not always correspond to the actual amount of material available on a particular casting. In some areas it may be larger or smaller, while certain surfaces may be shifted relative to the CAD model. If these deviations are not considered during process planning, unmachined areas may remain on the finished component or, conversely, too much material may be removed. For this reason, before CNC machining begins, it is worth verifying whether sufficient machining allowance is available in all critical areas of the component. This significantly reduces the risk of problems during subsequent machining operations. Distortion and Differences Between Individual Castings Minor distortions and dimensional differences between casting batches are a natural occurrence. Their extent depends on factors such as the manufacturing process, the material and the overall size of the casting. This does not mean that every casting requires an individually prepared machining program. Far more important is designing a process that accommodates acceptable casting variation while maintaining production repeatability. A properly developed manufacturing process should be robust enough to tolerate the typical deviations occurring between individual castings. As a result, production remains stable and finished components consistently meet documentation requirements. How Should Cast Components Be Properly Located and Clamped? The locating strategy directly affects the dimensional accuracy of the finished component. With castings, raw surfaces are often neither perfectly flat nor parallel, making the selection of suitable reference surfaces particularly important. Proper workpiece location minimizes the influence of casting irregularities on subsequent CNC machining operations. Selecting Reference Surfaces Reference surfaces should provide stable positioning while allowing all required features to be machined according to the technical documentation. This means selecting areas of the casting that exhibit the lowest variability and ensure the correct position of machined features. Already during process planning, it is worth analysing which surfaces are best suited as machining datums. Choosing the right reference points improves repeatability and reduces the risk of errors during subsequent setups. The Importance of the First Machining Operation The first machining operation often determines the success of the entire manufacturing process. It creates the reference surfaces that become precise technological datums during later setups. The quality of the initial setup directly influences all subsequent CNC machining operations. Properly machined reference surfaces make it much easier to maintain the required dimensional accuracy throughout the process. You can learn more about production planning in our article “From documentation to stable production – the work of a technologist at SIM Gdynia“. How Can the Impact of Casting Variability on Component Quality Be Reduced? Completely eliminating differences between castings is not always possible. However, the manufacturing process can be designed to accommodate these variations. In practice, this includes: In our daily work, we often encounter projects where the biggest challenge is not the CNC machining itself but preparing a process suited to a specific type of casting. Experience gained from a wide variety of projects allows us to identify potential issues long before production begins. Inspection of Cast Components Before and After CNC Machining Inspection starts before the cutting tool makes its first pass. Depending on the project, this may include verifying casting dimensions, available machining allowances and the position of the most critical surfaces. For more demanding components, this early inspection makes it possible to determine whether casting variability could prevent the part from being manufactured according to the technical documentation. Identifying such issues early helps avoid unnecessary production downtime. After CNC machining is completed, the finished component is inspected to verify compliance with the technical documentation. This confirms that, despite the natural variability of the casting, the finished part meets all project requirements. You can learn more about our inspection process in the article “Quality control in CNC machining – how do we ensure precision at SIM Gdynia?“. Summary Castings are an efficient way to prepare semi-finished products for manufacturing a wide range of components. However, their natural variability requires a carefully planned
CNC Machining Based on Customer Documentation – What Is Required to Prepare Production?
Production preparation in CNC machining begins long before the machine tool is started. The first step is to analyse the technical documentation provided by the customer. Based on this documentation, the feasibility of manufacturing the component is assessed, the machining technology is selected, the production process is planned, and the quotation is prepared. Complete and well-structured documentation reduces the need for additional clarifications, speeds up production planning and minimizes the risk of errors already at the implementation stage. So, what information is necessary to start manufacturing CNC components efficiently? Why Technical Documentation Is Essential in CNC Machining Every project begins with a review of the technical documentation. It is the basis for determining whether a component can be manufactured according to the specified requirements and which technological solutions will be the most appropriate. For more than 45 years, we have been delivering precision CNC machining projects for customers across a wide range of industries. From our experience, well-prepared technical documentation is one of the most important factors influencing efficient production planning and reducing the number of changes during later project stages. Documentation also affects the selection of raw material, the machining sequence, the fixturing method and the quality control plan. The more information the manufacturer receives at the beginning of the project, the easier it is to establish a stable and repeatable CNC machining process. What Information Is Required to Prepare CNC Machining? The more complete the information provided during the quotation stage, the faster the CNC machining process can be prepared and production can begin. A technical drawing alone is not enough. Information about the material, quality requirements and the intended application of the component is equally important. Providing these details early makes it possible to reduce unnecessary discussions and move more efficiently to the next stages of production. Technical Drawings and 3D Models in CNC Machining Technical documentation forms the foundation of every production process. In most cases, it includes manufacturing drawings in PDF format together with 3D models, such as STEP files, which significantly simplify process planning. The documentation should include: For more demanding projects, information about geometric tolerances and surfaces requiring special inspection is also essential. You can read more about this topic in our article “Dimensional and fit tolerances – how to optimise IT classes in CNC machining to avoid overpaying?“ Material, Batch Size and CNC Machining Requirements Besides geometric documentation, information about the material, production quantity and quality requirements is equally important. These factors influence CNC machining preparation, raw material selection and the planning of subsequent manufacturing operations. Before production begins, it is worth specifying: From our experience, clarifying these details already at the quotation stage significantly streamlines production planning and reduces the need for additional technical discussions. What Can Delay CNC Production Preparation? Not every documentation package allows the technological process to be prepared immediately. Some projects require additional clarification, which extends both the quotation stage and production planning. The most common issues include: In our daily work, we often find that the greatest challenge is not the CNC machining itself, but clarifying the technical requirements before production begins. The sooner these issues are resolved, the faster production preparation can move forward. How Documentation Analysis Affects the CNC Machining Process Analysing technical documentation is about much more than preparing a quotation. It provides the basis for planning the entire production process—from selecting the raw material and cutting tools, through fixturing methods, to machining operations and final inspection. In many cases, potential improvements and manufacturing risks can already be identified at this stage, helping to optimise the production process before machining even begins. The manufacturing process is prepared by a manufacturing engineer, whose role is to translate the customer’s documentation into a stable and repeatable production process. You can learn more about this role in our article “From documentation to stable production – the work of a technologist at SIM Gdynia“. Thanks to this preparation, production can begin efficiently while ensuring that finished components fully comply with the requirements defined in the technical documentation. Summary Complete technical documentation makes production preparation faster, shortens project analysis time and reduces the risk of misunderstandings during manufacturing. The earlier the key component requirements are defined, the easier it becomes to select the appropriate technology, choose the right tooling and establish a stable CNC machining process. In practice, documentation is not always complete from the start. Before production begins, it is therefore worth verifying whether it contains all the information required to prepare the manufacturing process. This helps avoid unnecessary questions, speeds up the quotation process and makes project execution more efficient. If you are planning to outsource CNC machining and would like to verify your project documentation, contact us. We will help you prepare a manufacturing process tailored to your component and production requirements.
SIM Gdynia at the AHK Poland Summer Evening 2026
We took part in the AHK Poland Summer Evening 2026, one of the largest Polish-German business gatherings organised by the German-Polish Chamber of Industry and Commerce (AHK Poland). The event brought together more than 400 representatives of member companies, business partners and the wider business community. Held at Forteca Kręgliccy in Warsaw, the meeting provided an opportunity for discussions, exchanging experiences and building relationships between companies operating in the Polish and German markets. Discussions and new opportunities for cooperation The programme included networking sessions, business meetings and numerous discussions on the development of economic cooperation between companies representing different industrial sectors. For SIM Gdynia, participating in events of this kind is an opportunity to meet new business partners, exchange experiences and follow market developments. Face-to-face meetings help us better understand the needs of companies and build relationships that may lead to joint projects and new opportunities for cooperation in the future. The importance of business relationships Modern industry relies not only on technology and manufacturing capabilities but also on strong business relationships. This is why we regularly participate in industry events, conferences and meetings that bring together members of the business community. We would like to thank the organisers for preparing the event and all participants for the valuable discussions and exchange of experiences.
Surface Roughness Under the Microscope – From Ra to Rz: How Cutting Parameters Define Final Quality in CNC Machining
In CNC machining, dimensional accuracy is only one of the factors that determine part quality. Even a component manufactured according to the technical drawing may fail to perform its intended function if the machined surface does not meet the project requirements. For this reason, technical documentation often specifies surface roughness requirements using parameters such as Ra and Rz. Surface roughness affects not only the appearance of a component but also its durability, sealing performance, and interaction with other parts. Why Surface Roughness Matters in CNC Machining Every machined surface contains microscopic irregularities created by the cutting action of the tool. Their size and characteristics depend on many factors related to the manufacturing process. Surface quality requirements should always be adapted to the function of the component. Not every surface requires the same level of finish, but in the case of mating surfaces, guide surfaces, and sealing surfaces, roughness can directly affect the performance of the finished product. Excessive surface roughness can accelerate component wear, increase friction, or make it difficult to achieve the required sealing performance. On the other hand, unnecessarily strict surface quality requirements often lead to higher production costs. Surface quality is particularly important wherever even minor deviations can affect component functionality. A good example is the medical industry, which we discuss in more detail in the article: “CNC Machining in the Medical Industry – Surface Quality Requirements” Ra and Rz – What Do They Tell Us About a CNC-Machined Surface? Ra and Rz are among the most commonly specified surface roughness parameters in technical drawings. Both describe surface condition, but each provides information about a different aspect of surface quality. In CNC machining, roughness parameters affect component interaction, sealing performance, and durability during operation. Understanding the differences between Ra and Rz is therefore important when defining quality requirements. Why the Ra Parameter Does Not Show the Whole Picture Ra represents the arithmetic average of surface profile deviations over the measured length. It is the most commonly used roughness parameter and appears in a large proportion of technical documentation. However, Ra provides only an average value. Two surfaces may have the same Ra value while differing significantly in the shape and depth of their irregularities. From the perspective of sealing performance, friction, or component interaction, these differences may be important. For this reason, when planning a CNC machining process, evaluating surface quality based on a single parameter does not always provide enough information to determine the actual requirements of the component. When Rz Becomes More Important Rz describes the height of surface irregularities, taking into account the differences between the highest peaks and deepest valleys of the profile. This makes it possible to evaluate not only the average surface condition but also larger irregularities that may affect component performance. This parameter is particularly useful when evaluating mating and sealing surfaces, as well as components exposed to operational wear. It can help identify local irregularities that may affect sealing performance or component durability. For this reason, in many industrial applications, Rz analysis provides valuable additional information alongside Ra measurements. What Determines Surface Roughness After CNC Machining? Achieving the required surface quality in CNC machining is not the result of a single technological decision. Even when working from identical technical documentation, the final result may vary depending on machining parameters, material properties, and tool condition. Surface roughness requirements should therefore be considered in the context of the entire production process rather than a single machining operation. Cutting Parameters and Tool Condition Machining parameters are among the most important factors affecting surface quality. Feed rate, cutting speed, and depth of cut directly influence the characteristics of the marks left by the cutting tool. In our work, we often encounter situations where a seemingly minor adjustment to machining parameters has a greater impact on the final surface quality than the choice of material itself. Tool condition is equally important. A worn cutting edge can reduce surface quality, increase surface irregularities, and produce unwanted machining marks. Workpiece Material and Process Rigidity Not every material behaves in the same way during machining. Aluminium, structural steel, stainless steel, and brass have different properties that affect the cutting process. For this reason, machining parameters should not be selected solely on the basis of component geometry. Material properties and the required surface quality after CNC machining are equally important. Parameters that work well for one material may not produce the same result when machining another component. The rigidity of the entire machining system also plays an important role. Vibrations generated during machining can leave marks on the surface that become visible during quality inspection. Where Are Surface Roughness Requirements Particularly Important? Not every surface of a component requires the same level of finish. Surface roughness requirements should therefore result from the function that a given feature performs in the finished product. We often work with components where surface quality requirements are just as important as the dimensional tolerances specified for CNC machining. Particular attention is paid to: Hydraulic components are a good example, as surface quality directly affects sealing performance and system durability. Surface Roughness Inspection After CNC Machining Achieving the required surface quality depends not only on the manufacturing process but also on effective inspection. Surface roughness is measured using specialised measuring instruments that make it possible to determine the required parameter values. This allows compliance with technical documentation to be confirmed before the component moves to subsequent production stages. We discuss our approach to quality control in more detail in the article: “Quality control in CNC machining – how do we ensure precision at SIM Gdynia?” Does Lower Surface Roughness Always Mean a Better Part? One of the most common mistakes is assuming that the lowest possible Ra value will always be the best solution. In our work, we often encounter situations where surface roughness requirements are stricter than the actual function of the component requires. Overly restrictive surface roughness requirements can lead to: For this reason, surface quality requirements should be defined according
Family Picnic for Children’s Day – Time Together for the SIM Gdynia Team in Chwaszczyno
On 14 June 2026, the Family Picnic for Children’s Day took place at Toyota Arena Stadium in Chwaszczyno. The event was organized with the idea of spending time together in a family-friendly atmosphere. The programme included many attractions for children and adults, such as animations, competitions, artistic performances, inflatable attractions, family sports activities and a food zone. It is an event that has attracted the local community for years and creates a space for shared celebration, conversations and good fun. We are pleased that this year we once again managed to gather enough participants to prepare a SIM Gdynia zone for our employees and their loved ones. It was a space for spending time together, talking and relaxing with prepared snacks and drinks. Time Together Outside Everyday Work Our zone was a place where we could meet outside the everyday work environment, spend time with our families and simply be together in a less formal atmosphere. It was also an opportunity to share a meal, talk and take a moment to rest during the event. Such initiatives are of great value to us because they help build relationships not only within the team, but also among families and loved ones, who are an important part of our employees’ lives. In the daily pace of work, there is not always space for such meetings, which is why we appreciate even more the opportunity to take part in local events together. Engagement in Local Initiatives For us, it is not only an opportunity for integration, but also a way to support initiatives taking place in our closest surroundings. We are happy to get involved in events that bring people together and create a positive atmosphere around spending time together. The weather was good, and the whole event took place in a friendly and family-oriented atmosphere. It was a good opportunity to spend time together and meet outside everyday professional duties. Thank you to all participants for the time spent together, and see you at the next events!
SIM Gdynia at the Polish-Swedish Defence Industry Forum
We took part in the Polish-Swedish Defence Industry Forum organised by the Ministry of Economic Development and Technology. The event brought together companies and institutions connected with the defence sector, creating an opportunity to discuss international cooperation, technological development and new investment opportunities. The forum took place at a time when cooperation between Poland and Sweden in the defence industry is becoming increasingly important. The topics discussed included opportunities to develop industrial partnerships, technology transfer, the participation of companies in international supply chains and joint research and development projects. Discussions on the future of the defence sector The event brought together representatives of public administration, technology companies and businesses operating in the defence sector. The forum provided an opportunity to exchange experiences and explore the prospects for cooperation between Polish and Swedish organisations. Particular attention was given to security, modern technologies and strengthening Europe’s industrial capabilities. Discussions also focused on the role of manufacturing companies in projects of strategic importance to the economy and defence sector. Cooperation opportunities for Polish companies The meeting brought together dozens of companies from Poland and Sweden. Each company had the opportunity to present its activities, capabilities and potential areas of cooperation. For SIM Gdynia, participating in events of this kind is an opportunity to follow market developments and build relationships with partners operating in sectors that require high quality and precision in the manufacturing of mechanical components. The growth of the defence industry and new technology projects create opportunities for cooperation between manufacturers, technology providers and production companies. SIM Gdynia in the defence sector For several years, we have been consistently developing our capabilities in the production of components for the defence sector. Participating in industry events allows us to better understand market needs, explore new directions in technological development and establish valuable business relationships. We would like to thank the organisers for the opportunity to participate in the event and everyone involved for the inspiring discussions about the future of the defence industry and international cooperation.
CNC Machining of Threaded Parts – How to Avoid the Most Common Threading and Thread Inspection Errors?
Threads are among the most commonly manufactured features in mechanical component production. They are used in simple assembly parts as well as housings, enclosures, and components operating in demanding industrial environments. Although threading may seem like a standard machining operation, even minor errors can cause problems during assembly. As a result, a part that meets dimensional requirements may still fail to perform correctly in its intended application. For this reason, CNC machining of threaded parts requires not only a properly designed manufacturing process but also effective quality control. Why Thread Quality Matters in CNC Machining Threads are responsible for ensuring a reliable connection between components. If a thread is manufactured incorrectly, the problem often becomes apparent only during assembly or the initial operation of the equipment. In many cases, minor damage to the thread profile, poor surface quality, or geometric deviations are enough to prevent a screw from being installed correctly. Thread quality is particularly important for components exposed to operational loads, applications requiring leak-tight connections, and parts designed for repeated assembly and disassembly. Where Thread Defects Most Commonly Become Apparent Not every thread-related problem is visible immediately after CNC machining. Based on our experience, many defects only become apparent during the assembly of finished components, when the connection fails to meet the specified requirements. The most common issues include: For a single part, such a problem usually means additional assembly work or the need for rework. In larger production batches, the same defect may affect multiple components, leading to additional inspections, delays, and higher project costs. For this reason, thread quality should be treated as one of the factors affecting the functionality of the finished product rather than simply another manufacturing operation. The Most Common Problems When Producing Threads in CNC Machining The final result of CNC threading depends on many factors related to both workpiece preparation and the machining process itself. In our work, we often encounter situations where thread problems are caused not by one major error but by several seemingly minor deviations occurring at different stages of production. Hole Preparation and Tool Condition One of the most common errors is improper preparation of the hole before threading. Even minor deviations in diameter, alignment, or surface quality can affect the machining process and the quality of the finished connection. Errors introduced at this stage are difficult to correct during subsequent operations, which is why proper workpiece preparation is essential for producing a correct thread. Tool condition is equally important. As tools wear, thread quality deteriorates and the risk of defects increases. This is particularly relevant in serial production, where tools perform a large number of machining cycles. For this reason, monitoring tool condition is one of the key elements in maintaining stable production quality. Thread Damage and Chip Evacuation Problems Another common source of problems is chips remaining in the machining zone. They can damage the thread surface or reduce the quality of subsequent thread turns. This issue is particularly common when producing deeper threads and machining materials that generate long, difficult-to-evacuate chips. The first thread turns are especially vulnerable because they are responsible for ensuring proper engagement during assembly. Even minor damage in this area can cause problems when joining components. Effective chip evacuation from the machining zone is therefore particularly important when producing deeper threads and in serial production. Similar relationships can also be observed in other precision machining operations. We discuss them in more detail in the article: “Precise hole machining in CNC machining – drilling, reaming, and boring in practice” Thread Inspection and Consistent Quality in CNC Serial Production Thread inspection should not be limited to visual examination. Depending on the requirements, thread gauges and other inspection methods are used to verify whether the thread has been manufactured correctly. In serial production, maintaining consistent parameters across the entire batch is just as important as the quality of an individual thread. Based on our 45 years of experience, the greatest challenge is not producing a single correct part but maintaining the same quality across subsequent production batches. Achieving this requires proper process preparation, tool condition monitoring, and regular inspection of manufactured components. Selecting appropriate tolerances and quality requirements at the technical documentation stage is equally important. We discuss our approach to quality control in more detail in the article: “Quality control in CNC machining – how do we ensure precision at SIM Gdynia?” Summary Threads are among the features whose quality is often fully verified only during assembly. Proper process preparation, tool condition monitoring, and effective inspection of finished parts therefore have a direct impact on component functionality. In CNC machining, dimensional compliance is not the only requirement. A finished part must also function correctly during subsequent production stages and throughout its intended service life. At SIM Gdynia, we provide CNC machining of threaded parts for demanding industrial applications. Contact us to discuss your project requirements.
Technological Training with ISCAR at SIM Gdynia
On 15 May, a technological training session conducted by ISCAR took place at SIM Gdynia. ISCAR is our partner with extensive experience in the field of cutting tools and CNC machining technology. The meeting was an opportunity for our team to expand its knowledge and learn about solutions that may support the further development of production processes carried out at SIM Gdynia. In the CNC machining industry, the development of tool technologies has a direct impact on process stability, production efficiency and the quality of manufactured parts. That is why meetings of this kind have real practical value for us. New Solutions in Cutting Technology During the training, ISCAR representatives presented the new LOGIQUICK tool line, developed for modern cutting and milling processes. Solutions from this series make it possible to better match tools to specific technological applications, which may translate into both greater precision of the processes performed and optimization of machining times. In practice, such solutions are important not only from the perspective of efficiency, but also for the repeatability of production processes, which is crucial in everyday work for the quality of finished components. Exchange of Experience and Competence Development For our team, this was not only a product meeting, but above all an opportunity to exchange experience and discuss practical aspects of cutting technology. Direct contact with technology partners makes it easier to assess the potential of new solutions and look at the production process from the perspective of everyday technological challenges. At SIM Gdynia, development means not only investments in the machine park, but also systematic expansion of the team’s competences and improvement of the processes used. Meetings like this are an important part of this approach because they allow us to combine practical knowledge with technological innovations emerging on the market. We would like to thank ISCAR for the substantive training, valuable discussions and the opportunity to learn more about new technological solutions.