Special circular broach numerical control cutter-sharpening machine tool

Abstract

The invention discloses a special circular broach numerical control cutter-sharpening machine tool which takes a numerical control lathe as a substrate; two ends of a broach is rotatably erected on the lathe; the body of one side of the lathe is distributed with a plurality of broach supporting frames along the axial direction of the broach so as to form strengthening support to the broach; the body of the other side of the lathe is provided with a big carriage which can move along the axial direction of the broach, and a middle carriage which can move along the radial direction of the broach,wherein the middle carriage can be movably arranged on the big carriage; moreover, a variable frequency high-speed grinding head and a grinding wheel which is driven by the variable frequency high-speed grinding head are arranged on the middle carriage; the axial movement of the big carriage is driven by a number 1 stepping motor; the radial movement of the middle carriage is driven by a number 2stepping motor; and the number 1 stepping motor and the number 2 stepping motor are controlled by a numerical control system on the lathe in a combining way. The special circular broach numerical control cutter-sharpening machine tool not only can avoid the broach from bending when in cutter sharpening, but also can be controlled by the numerical control system to dress the radial feed size of the grinding wheel, effectively ensures the consistency of the broach pitch and shape, and can prolong the service life of an internal spline and the circular broach.

Description

Technical field: [0001] The invention relates to a machine tool, in particular to a special machine tool for CNC sharpening of round broaches. Background technique: [0002] The round hole spline broach has a slender shaft similar to a bamboo-shaped shape, such as figure 1 As shown, a plurality of cutting teeth and correction teeth are evenly distributed along the axial direction, and there is an annular chip groove 1 between the teeth, and a plurality of cutting teeth 2 are distributed along the circumferential direction in the radial section of the broach. figure 1 , when cutting, the broaching machine flange 3 is fixed on the broaching machine, the workpiece 4 is fixed on the broaching machine flange 3, and the cutting movement direction of the broach is to move along the axial direction of the workpiece to cut the inner hole wall of the workpiece (arrow direction ). to combine figure 2 , The broach cutting tooth 2 cuts the inner hole wall of the workpiece 4, when the...

AI Technical Summary

Problems solved by technology

Because the depth is manually fed and the grinding wheel is manually trimmed, the tooth pitch of the broach after grinding is inconsistent. The radial grinding force makes the broach easy to bend greatly, and the broaching quality of the product is unstable, which not only affects the product quality, but even Cause the broach to be scrapped, causing greater economic losses

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