Miniature two-edged helical staggered tooth forming knife

Abstract

The invention discloses a minitype two-blade variable spiral staggering tooth forming cutter and belongs to the technical field of machining cutters. The minitype two-blade variable spiral staggeringtooth forming cutter comprises a cutter bar and a cutter head fixedly connected with the cutter bar, wherein the cutter head is composed of a first cutter tooth for machining the bottom surface of a groove and the table board of a notch and a second cutter tooth for machining the bottom surface and the side wall surface of the groove; the first cutter tooth is provided with a first upper end facecutting edge, a first lower end face cutting edge, a first upper circumference cutting edge and a first lower circumference cutting edge; the second cutter tooth is provided with a second upper end face cutting edge, a second lower end face cutting edge, a second upper circumference cutting edge and a second lower circumference cutting edge; the second upper end face cutting edge is provided withan extending tooth part capable of extending towards the direction of the first upper circumference cutting edge along the second upper end face cutting edge; the distance, extends to the central axisof the cutter head, of the extending tooth part towards the direction of the first upper end face cutting edge is d; and d is equal to or less than 0.03mm and equal to or greater than 0.01mm. The minitype two-blade variable spiral staggering tooth forming cutter can be adapted to machining a small-size structural part and can ensure the acute angle effect at the connecting part of the notch and the table board.

Description

technical field [0001] The invention relates to the technical field of mechanical processing cutters, more specifically, to a miniature two-edged variable-helical staggered-tooth forming cutter. Background technique [0002] The machining of traditional grooves and table tops usually requires two ordinary milling cutters to ensure the acute angle effect between the groove mouth and the hinge of the table top. It is necessary to use a milling cutter to process the grooves first, and then replace them with other milling cutters. If you adjust the processing position and then continue to process the table top of the groove, the processing efficiency will be greatly affected, reducing production efficiency, and it is difficult to connect the two separate processes very well, resulting in a certain impact on the processing accuracy. ; Although there are staggered-tooth step forming cutters for one-time processing of groove mouths and mesa tops in the prior art, due to design limi...

AI Technical Summary

Problems solved by technology

[0002] The machining of traditional grooves and table tops usually requires two ordinary milling cutters to ensure the acute angle effect between the groove mouth and the hinge of the table top. It is necessary to use a milling cutter to process the grooves first, and then replace them with other milling cutters. If you adjust the processing position and then continue to process the table top of the groove, the processing efficiency will be greatly affected, reducing production efficiency, and it is difficult to connect the two separate processes very well, resulting in a certain impact on the processing accuracy. ; Although there are staggered-tooth step forming cutters for one-time processing of groove mouths and mesa tops in the prior art, due to design limitations, it is difficult to make the cutters very small. Once machining is carried out, it is a 3C class small-sized electronic structure Products, the existing staggered tooth step forming tool cannot be used for machining of 3C small-sized electronic structure products

Images