What are CNC gear milling machines?
CNC orbital milling machines are specialized machines used in machining, designed for the production of gears with an orbital tooth profile. Thanks to the use of numerical control technology, they make it possible to precisely reproduce the shape of the teeth in accordance with strict dimensional standards.
These devices are used in the production of components requiring high accuracy, such as drivetrain components used in the automotive, aerospace and engineering industries.
How do CNC envelope milling machines work?
A CNC orbital milling machine enables gears to be machined by precisely controlling the trajectory of the cutting tool, which allows the teeth shape to be accurately reproduced. The process is carried out on several working axes that operate simultaneously, allowing multidirectional movements of the tool.
Thanks to CNC programming, it is possible to plan each machining step with high accuracy. This organization of work minimizes the risk of errors and ensures repeatable production. As a result, gears that meet quality standards can be obtained.
Challenges in the gear cutting process
The gear cutting process involves the need to maintain very tight dimensional tolerances. Even small deviations in the shape or dimensions of the teeth can affect the functioning of the mechanism in which they are used.
An important part of the process is the geometry of the cutting tool – the peripheral cutter – and its proper alignment. Precise adjustment of parameters such as rotational speed, feed rate and tool angle is key to achieving a high-quality product.
S&T Dynamics H200 envelope milling machine at SIM Gdynia
In 2022, we expanded our machine park with a CNC S&T Dynamics H200 envelope milling machine. The machine allows us to machine components with a diameter of up to 200 mm, which significantly increases our gear production capabilities.
The machine is equipped with a direct torque motor drive, which eliminates mechanical clearances and enables us to achieve high precision during machining. The tooth-cutting process on some parts takes as little as 4 minutes, which significantly reduces turnaround time compared to traditional methods.
The S&T Dynamics H200 milling machine operates at a working table speed of up to 230 rpm and achieves a feed rate on the X and Z axes of 12 m/min. These technical parameters allow us to realize machining with high requirements in terms of accuracy and productivity.
Semi-dry machining technology in our cutting process
In our work, we use the MQL (Minimal Quantity Lubrication) system, which allows us to reduce lubricant consumption. The semi-dry machining technology used in the H200 milling machine not only reduces production costs, but also reduces the environmental impact of the process.
By using MQL, the machining process is more efficient and the cutting tools have an extended service life. This approach allows us to optimize production without compromising on workmanship.
Summary
CNC circumferential milling machines are the backbone of the high-precision gear manufacturing process. The introduction of the S&T Dynamics H200 milling machine to our machine park has made it possible to increase the efficiency of our orders, as well as to guarantee the quality required in modern technical applications.
Thanks to the continuous development of our production capabilities, we are ready to meet the requirements of the most demanding industries, such as automotive, aerospace and engineering.
