Inner gear machining method and special gear shaping clamp

Abstract

The invention provides an inner gear machining method and a special gear shaping clamp. The processing method comprises the following steps: firstly carrying out rough machining on wheel teeth by virtue of the common shaping machine, adopting an indexing mechanism and a shaping tool with a trapezoidal cutting edge to machine gear grooves in a one-by-one manner, obtaining a trapezoidal middle tooth profile which is very close to the final tooth profile of an inner gear, and remaining a small amount of fine-machined allowance; and then adopting the shaping tool with a conjugate tooth profile on the gear shaping machine to carry out fine machining on the wheel teeth. The special gear shaping clamp comprises a base, pressing plates, an adjusting screw, a screw, a pressing nut, a steel ball, a retaining frame, a sliding block, sliding block bolts, sliding block nuts, a positioning rod and a positioning pin, and the special gear shaping clamp has the main functions of aligning the peripheral positions of the inner gear and the gear shaping tool and clamping a workpiece. In the inner gear machined by adopting the method, the gear shaping efficiency can be effectively improved, the wear of the gear shaping tool can be reduced and the machining accuracy of the wheel tooth can be improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing technology and equipment, and in particular relates to an internal gear processing method and a special gear shaping fixture. Background technique [0002] The machining of internal gears in mechanical manufacturing generally adopts the gear shaping process. The gear shaping cutter has a blade profile that is conjugate to the tooth profile of the internal gear, and is processed by the principle of generation. Since the secondary clamping of the workpiece will bring difficulties in aligning the workpiece, the shaping of the internal gear in the prior art generally does not divide the rough and fine machining processes, and the workpiece is clamped once to complete the processing of the entire tooth profile. The disadvantage of this processing method is The machining allowance is large, the machining efficiency is low, and the tool wears quickly. Since the blade of the gear shaper c...

AI Technical Summary

Problems solved by technology

Since the secondary clamping of the workpiece will bring difficulties in aligning the workpiece, the shaping of the internal gear in the prior art generally does not divide the rough and fine machining processes, and the workpiece is clamped once to complete the processing of the entire tooth profile. The disadvantage of this processing method is The machining allowance is large, the machining efficiency is low, and the tool wears quickly. Since the blade of the gear shaping knife is generally a space curve, it is not easy to grind, which affects the machining accuracy of the internal gear.

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