Gear shaper cutter free of theoretical edge shape errors

Abstract

The invention provides a gear shaper cutter free of theoretical edge shape errors. The gear shaper cutter comprises a cutter body and cutter teeth evenly distributed on the circumference of the cutter body. Each cutter tooth comprises lateral rear cutter faces, a front cutter face, a rear-top cutter face, a plurality of side edges and a top edge, wherein the front cutter face is a spherical face; the rear-top cutter face is a conical face, and the tip diameter of the rear-top cutter face is decreased gradually backwards from the front end of the cutter; the top edge is the intersecting line between the front cutter face and the rear-top cutter face; the side edges are the intersecting lines between the lateral rear cutter faces and the front cutter face and are in conjugation with the tooth face of a machined gear all the time in the machining process; and the lateral rear cutter faces are free curved faces composed of the side edges, and side edges of the cutter are still in conjugation with the tooth face of the machined gear after being sharpened again. According to the gear shaper cutter free of theoretical edge shape errors, the spherical faces are used as the front cutter faces of the gear shaper cutter, so that the strength of the cutter is improved; since the side edges are in conjugation with the tooth face of the machined part, edge shape errors are avoided theoretically, and the machining precision of the gear shaper cutter is improved greatly; and the front angle and the back angle of the gear shaper cutter are larger, and the cutting condition of the gear shaper cutter is improved.

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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