A kind of edge passivation process

Abstract

The invention discloses a cutting edge passivation technology which comprises the following steps: S1, manufacturing a foam grinding wheel; S2, forming an annular groove (2) matched with the cutter tooth of a hard alloy groove cutter in the cylindrical surface of the foam grinding wheel (1); S3, carrying out coarse passivation on the cutting edge of the hard alloy groove cutter; S4, manufacturing a finishing polish device; and S5, carrying out finishing polish on the cutting edge of the hard alloy groove cutter, and starting a motor (4) to drive a turntable (3) to rotate at the speed of 56-60 rpm. During the rotation process, carborundum carries out finishing polish on the cutting edge, so that finishing polish on the cutting edge of the hard alloy groove cutter is realized. The cutting edge passivation technology has the following beneficial effects: the passivation quality is improved, the degree of finish of the cutting edge is increased, and the passivation efficiency of the cutting edge is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of edge passivation of cemented carbide groove cutters, in particular to an edge passivation process. Background technique [0002] The pulley is one of the most important parts in the belt transmission structure. It is widely used in various transmission machinery in industries such as automobiles, machine tools, and home appliances. Among them, several pulleys are installed on the automobile engine, and V-shaped grooves, straight grooves, etc. are set on the pulleys. , In order to achieve slotting, carbide slotting cutters are usually used to process the slots. Carbide slotted cutters are divided into single slotted knives, double slotted slotted knives, multi-slotted slotted knives, etc. The cemented carbide slotted knives are equipped with mounting holes connected to the slotted tool bar. [0003] After the tungsten carbide groove cutter has been subjected to the pressure sintering technology, sharpenin...

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Problems solved by technology

[0003] After the tungsten carbide slotting knife has been subjected to the pressure sintering technology, sharpening and grinding, due to the brittleness of the tungsten carbide itself, the cutting edge is very sharp and fragile, and there are always tiny sawtooth gaps on the cutting edge. When cutting the pulley, it is very difficult to It is easy to cause chipping of the edge of the carbide groove cutter, which reduces the service life of the blade and affects the quality of the machined surface

Therefore, it is necessary to passivate the edge of the cemented carbide groove knife. The basic principle of edge passivation is to grind the blade with a grinding wheel at a certain speed, and gradually remove a small amount of edge material, but the quality consistency of edge passivation It is difficult to control, so that the passivated cutting edge is at different positions, and the radius of the passivated arc is inconsistent, which affects its service life and stability

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