Negative rake angle grinding clamp for slotting cutter

Abstract

The invention relates to a grinding clamp for grinding a negative rake angle of a slotting cutter in an all-purpose toll grinding machine, which solves the problems in the current machining method. The grinding clamp comprises a positioning pin, a hand wheel, a revolving body, a turntable, a nut, a supporting plate, a fixing nut, a chassis and a pin shaft; the hand wheel is mounted on the revolving body; the turntable is fixed to the revolving body; the slotting cutter to be machined is fixed to the turntable through the nut and the supporting plate; the revolving body is mounted on the chassis through the pin shaft; the revolving body can rotate relative to the chassis; the relative position of the turntable and the revolving body can be fixed through the fixing nut; an eccentric distance is reversed between the centre of the revolving body and the slotting cutter to be machined; the centre of the revolving body is overlapped with the centre of a substitution arc of the tooth profile of the slotting cutter to be machined; the positioning pin is fixed to the chassis and can be inserted or withdrawn from a tooth groove of the slotting cutter to be machined. A grinding method is simple and easy to operate; during grinding, a cutter tooth negative rake angle ligament with uniform width from a tooth top to a tooth root can be ground by only regulating the centre of a sand wheel and the revolving centre of the clamp at the same height.

Description

[0001] Technical field: [0002] The invention relates to a grinding fixture for grinding negative rake angles of gear shaper cutters on a universal tool grinder, which is used for precision machining of different negative rake angles and different ligament widths of gear shaper cutter teeth. [0003] Background technique: [0004] In order to prevent the occurrence of chipping of the gear shaping cutter in the hard tooth surface shaving, a gear shaping cutter with a negative rake angle along the tooth shape direction is designed, but it is difficult to process the negative rake angle of the teeth of the gear shaping cutter. There are two types. One is to grind the negative rake angle along the tooth shape direction on the rake face. The CNC program is used to process the negative rake angle of the tooth on the type machining center. However, due to the high hardness of the gear shaper cutter and the narrow tooth groove, only cylindrical grinding wheels can be used for grinding...

AI Technical Summary

Problems solved by technology

[0006] The invention is a grinding fixture for grinding the negative rake angle of the gear shaper cutter on a universal tool grinder, which solves the problems existing in the current processing method

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