Cemented Carbide Broach Use - part1

Impact broaching quality and cemented carbide broach life, severe damage to broach cemented carbide broach the structure and use of common production problems. Longer ills and measures are summarized below:

1.To prevent cemented carbide broach fracture and tooth damage

Broaching cutter excessive force, broaches strength is not enough, is the damage cemented carbide broach the main reason. Caused by cutter tooth force many big factor, example: broach teeth liter excessive broach bending points of the cutting edge broaching margin uneven, radial round beating large cutter, prefabricated hole is too rough, materials internal hard spots, the workpiece strength is too high, the serious stick crumbs and chip flutes congestion and workholding skew. To cemented carbide broach smooth broach, the following measures can be used:

1) Requires the prefabricated hole accuracy IT8 IT10, surface roughness degree Ra ≤ 5 μm, prefabricated holes and positioning the end face perpendicularity deviation does not exceed 0.05mm.
2) Strict inspection of manufacturing precision broaches. The amount of tooth liter for outsourcing broaches, the chip space broach strength check.
3) Broaching the performance and difficult to machine materials, you can select the appropriate heat treatment to improve the workability of the material, often using high-performance materials cemented carbide broach or coating broach.
4) The custody, transport cemented carbide broach bending deformation and damage the cutter to prevent.