Gear shaper cutter free of theoretical edge shape errors

Abstract

The invention provides a gear shaper cutter without theoretical blade shape error, which includes a cutter body and cutter teeth evenly distributed on the circumference of the cutter body, and the cutter teeth include side flanks, rake faces, top flanks, side edges and top edges ;The rake surface is a spherical surface; the top flank surface is a conical surface, and the diameter of the top circle gradually decreases from the front of the tool to the rear; the top edge is the intersection line of the rake surface and the top flank surface; the side edge is the side flank surface and The intersection line on the rake face is always conjugate with the tooth surface of the machined gear during the machining process; the side flank is a free-form surface composed of multiple side edges, and the side edge obtained by re-sharpening the tool is still consistent with the machined gear tooth surface. Conjugate gear teeth. The gear shaper without theoretical edge shape error adopts a spherical surface as the rake face of the gear shaper, which improves the strength of the tool; because the side edge is conjugate to the tooth surface of the machined part, there is no edge shape error in theory, which greatly improves the gear shaper processing Accuracy; the rake angle and rear angle of the gear shaper cutter are larger, which improves the cutting conditions of the gear shaper.

Description

Technical field [0001] The invention relates to a gear shaper cutter, in particular to a gear shaper cutter without theoretical edge error. Background technique [0002] Gear shaping is one of the most commonly used involute gear processing methods. As an important part of the gear shaping process system, the gear shaping cutter directly affects the gear shaping accuracy. The current gear shaper cutter is designed and manufactured by involute development theory. After the rake and relief angles are opened, the theoretical error of the side edge shape will inevitably be developed, and the blade shape before and after the tool is inconsistent. The processed parts have low accuracy and poor accuracy consistency. In addition, the current standard gear shaper cutter's top edge rake angle is 5° and the top edge clearance angle is 6°. The cutting performance of the tool is poor. Increasing the rake angle can effectively improve the cutting performance of the tool. The blade profile e...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of theoretical edge shape error in the existing gear shaper cutter, poor consistency of machining accuracy before and after sharpening, and increase of theoretical edge shape error with the increase of top edge rake angle and top edge relief angle, the present invention provides a The theoretical edge shape error gear shaper cutter can effectively improve the gear shaper machining accuracy

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