CNC Knowledge: Gear broaching machine

Broaching is a type of efficient and high-precision single forming machining operation that can achieve rapid cutting of complex shapes, such as keyways, splines, polygons, tenon grooves, serrations, involute teeth, special contours, etc. Because the broaching process exhibits high precision and consistency in processing complex profiles and difficult-to-cut materials, it is widely used in the manufacturing of key components such as aerospace engines, steam turbines and braking systems automobile.

The concept of broaching dates back to the early 1850s and was originally used to cut keyways in pulleys and gears. After World War I, broaching was used for rifle barrels. In the 1920s and 1930s, with advances in shape grinding and broaching machines, tolerances were tightly controlled and costs reduced.

Advantages of pinout:

Several edges participate in the cut at the same time;

Wide cutting range;

The cutting thickness is low;

Short processing time and high efficiency;

The treated surface has a good finish;

Easy to automate;

Disadvantages of pinout:

Pinout has both advantages and disadvantages. It is important to understand its shortcomings and combine them appropriately with other treatment methods depending on the purpose of the treatment. Disadvantages of pinout include:

・Not suitable for small batch production

Pins used for broaching are generally expensive and time-consuming to manufacture. It is not suitable for small batch production, cost and delivery time must be considered.

・Not good for processing blind holes

The size of the spindle teeth gradually increases. A certain length is required to complete the required shape, and the workpiece is processed into the required shape by passing the pin through it, so it is not suitable for processing blind holes. Blind holes are usually made with a gear shaper or pusher.

Gear broaching machine inquiries: 159 1097 4236;

I hope to discuss with you:

Methods of designing and processing gears, and related matters relating to the design, manufacture and operation of cutting tools used to process gears.

Related technical issues such as gear milling cutter design calculation methods, related application development, automatic drawing of CAD secondary development, etc.

In terms of tool application, cutting parameters, coating and tool life, problems encountered in processing and solutions, etc.