Positioning device used for gold jewelry grinding

Abstract

The invention relates to the field of gold jewelry processing, in particular to a positioning device used for gold jewelry grinding. The positioning device comprises a motor and a positioning shaft coaxially arranged on an output shaft of the motor, multiple positioning plates distributed in the axial direction of the positioning shaft are arranged on the periphery of the positioning shaft, the diameters of the multiple positioning plates are gradually increased in the direction close to the motor, the multiple positioning plates are coaxially arranged, and the multiple positioning plates are circumferentially distributed on the periphery of the positioning shaft in multiple sets; every two adjacent positioning plates in the same set are fixedly connected together through a connecting plate, the connecting plate closest to the positioning shaft in each set is hinged to the positioning shaft through a rotating shaft, and each rotating shaft and the positioning shaft are perpendicular to each other but do not intersect with each other; and an opening mechanism for driving all the positioning plates to be opened outwards when the positioning shaft rotates is arranged on the positioning shaft. According to the scheme, the connecting plates, the positioning plates, the rotating shafts and the opening mechanism are arranged so that gold jewelry can be conveniently and stably positioned on the positioning shaft.

Description

technical field [0001] The present application relates to the field of gold jewelry processing, in particular to a positioning device for polishing gold jewelry. Background technique [0002] During the processing of gold jewelry, the surface will be polished to make the surface of gold jewelry smoother and more translucent. [0003] Such as Figure 4 , shown in the figure is a clamping device for gold jewelry polishing, including a motor 1, and a conical positioning shaft 2 coaxially arranged on the output shaft of the motor 1 for gold jewelry to be fastened. When the ring-shaped gold jewelry (such as gold rings, gold bracelets, etc.) For gold jewelry, finally put the sandpaper or grinding wheel close to the surface of the gold jewelry, so as to evenly polish the circumferential position of the gold jewelry. [0004] Although the above-mentioned clamping device has a simple structure, since the gold jewelry is simply tightly set on the truncated positioning shaft, and the...

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned clamping device has a simple structure, since the gold jewelry is simply tightly set on the truncated positioning shaft, and the contact area between the gold jewelry and the positioning shaft is small, the positioning shaft can easily throw the gold jewelry out during high-speed rotation. Affects the normal polishing of gold jewelry

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