Cemented carbide broaches are multi-tooth tools. When broaching, one tooth above the previous one tooth can cut away metal from the workpiece layer by layer, in order to obtain the desired working surface. Cemented carbide broaches efficient multi-tooth tool. Broaching cemented carbide broaches on the changes in the size of the cutter tooth resection allowance broaching tolerance level: IT7 ~~ IT9 surface roughness value: 0.5 ~~ 3.2μm. The broaching compared with other cutting methods, has the following characteristics:

①The survival rate is high. As cemented carbide broach tools are Multi-tooth, at the same time to participate in the work of the cutter, the total length of the cutting edge is large and one stroke thick - semi-refined - finishing can be completed, and therefore high productivity.

②Precision machining is high. Broaching speed is low (typically no more than 0.30m / s), stationary cutting process, cutting a thin (the general finishing cutter tooth is 0.005 to 0.015mm), therefore, It can product workpiece with the accuracy of IT7 and surface roughness no greater than, Ra0.8μm. If cemented carbide broaches tail is equipped with a floating extrusion ring, the surface roughness can up Ra0.4 ~ 0.2μm.

③Broaching structure is simple. Broaching generally only have the primary campaign, the feed motion rely on cemented carbide teeth broach cutting part liters amount, so, broaching machine structure is simple and convenient operation.

④Cemented carbide broaches are durable. Duo to lower broaching speed, low cutting temperature, slow tool wear, cemented carbide broaches have higher degree of durable.

⑤A wide range of applications. Many other cutting methods are difficult to process the surface, especially the complex shape of the various types of through holes, can be used to the completion of the broaching.

⑥Cemented carbide broaches are complicated tools, used for large and bulk production. Cemented carbide broach structure is more complex than ordinary tools, high manufacturing costs, so much for a large and batch production. For some of the high accuracy requirements and the special shape of the inner and outer forming surface processing more difficult using other methods, even if it is single-piece, small-batch production, may also be used broaching processing.

Cemented carbide broach manufacturing more complex, it is mainly used for large, bulk part of the process, for example, the broaching car engine body shell, the diesel engine connecting rod and various machine gears splined hole and so on.

The figure below shows a typical broaching workpiece cross-sectional shape.

Broaching Cross-sectional Shape

Typical cross-sectional shape of the workpiece broaching

Chinatungsten Online can provide various sizes and grades of cemented carbide cutting tools, non-standard products are also customized according to customer requirements. Welcome to consult and purchase sales@chinatungsten.com, sales@xiamentungsten.com.