Double-hole positioning gear grinding fixture for external cycloidal gear

Abstract

The invention discloses a double-hole positioning gear grinding fixture for an external cycloidal gear. The gear grinding fixture comprises an upper fixture, a lower seat body and a clamping device; the clamping device includes a piston, a connecting disc, a transition pull rod, pull shafts, positioning taper sleeves and expanding sleeves; the piston and the connecting disc are correspondingly arranged at the lower section and the middle section of the lower seat body; the transition pull rod is arranged at the middle part of the connecting disc in a penetrating manner, and the connecting discis fixed to the piston in a butt joint manner through the transition pull rod; the positioning taper sleeves are axially arranged at the upper section of the lower seat body in a penetrating manner and are arranged in a central symmetry manner; the expanding sleeves are arranged at the upper sections of the pull shafts one to one in a limiting and sleeving manner; each pull shaft penetrates intothe corresponding positioning taper sleeve from the top down and is in clearance fit with the corresponding positioning taper sleeve; and the expanding sleeves correspondingly fit in with the positioning taper sleeves; and the lower end of each pull shaft penetrates through the corresponding positioning taper sleeve and is fixedly connected with the connecting disc. According to the gear grindingfixture, double-hole positioning is performed by pin holes; when being assembled, the fixture has high self-centering ability, the centering position is stable, and rigidity is sufficient, and thereby, the efficiency and precision of fixture assembling are improved, and the external cycloidal gear is more accurate and reliable to clamp; and in addition, all parts are installed in a detachable manner, so that production difficulty is lowered, and assembling is convenient.

Description

technical field [0001] The invention belongs to the technical field of gear processing, and in particular relates to a double-hole positioning grinding fixture for cycloidal gears with external teeth. Background technique [0002] Cycloidal gears are a general term for cylindrical gears with tooth profiles of various cycloids or equidistant curves. According to the relative position of the teeth, they are divided into cycloidal gears with external teeth and cycloidal gears with internal teeth, especially cycloidal gears with external teeth. There is a pin hole on the end surface of the cylinder, and the outer side of the cylinder is the tooth surface. When the external tooth cycloidal wheel is ground, it is generally centered through the axis hole, but the thickness of the external tooth cycloidal wheel is small and the pin hole The wall between the outer tooth surface and the outer tooth surface is thin. When the existing fixture is clamped, the positioning accuracy is low ...

AI Technical Summary

Problems solved by technology

[0002] Cycloidal gears are a general term for cylindrical gears with tooth profiles of various cycloids or equidistant curves. According to the relative position of the teeth, they are divided into cycloidal gears with external teeth and cycloidal gears with internal teeth, especially cycloidal gears with external teeth. There is a pin hole on the end surface of the cylinder, and the outer side of the cylinder is the tooth surface. When the external tooth cycloidal wheel is ground, it is generally centered through the axis hole, but the thickness of the external tooth cycloidal wheel is small and the pin hole The wall between the outer tooth surface and the outer tooth surface is thin. When the existing fixture is clamped, the positioning accuracy is low and the rigidity is poor. When the tooth is ground, the failure rate is high, and the clamping operation is inconvenient, which cannot meet the requirements of high efficiency and high quality. Processing technology requirements for precision cycloidal gears

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