Broach is a forming tool for broaching. There are multiple rows of cutter teeth on the surface of the tool, and the size and shape of each row of cutter teeth increase and change successively from the cutting in end to the cutting out end. When broach is broaching, a certain thickness of metal is cut from the workpiece by each cutter tooth, and the required size and shape are finally obtained. Broach is often used in batch and mass production to process round hole, spline hole, keyway, plane and forming surface, etc. Broach can be divided into internal broach and external broach according to different surface parts; broach and broach can be divided into broach and push knife according to different stress modes during working. The push knife is often used to calibrate the hole after heat treatment.

HCVAC coating equipment is developed for broach tools with hard film. The frame design can maximize the number of products per furnace. The turret adopts the down drive structure, digital adjustment, gradual stop, frequency conversion and speed regulation. It is suitable for processing small volume workpieces. It has a unique octahedral cavity design, which can improve the utilization rate of design space Convenient maintenance and repair, with multiple feedback control system: arc source control, process control.