A high-precision and fast positioning device based on the principle of end gear positioning

Abstract

The invention discloses a high-precision quick positioning device based on an end tooth disc positioning principle, and relates to a positioning device. A columnar base is vertically arranged, and isprovided with a first round groove at the middle part of the upper surface; a first through hole and a second round groove are formed in the outer peripheral surface; the first through hole communicates with the first round groove and the second round groove; a clamping mechanism is arranged in the first through hole; the second round groove is connected with one end of an air joint; an end toothdisc is connected with the columnar base and a substrate; a third through hole communicating with the first through hole is formed in the middle part of the upper surface of the end tooth disc; the lower end of the joint penetrates through the third through hole in a gap mode, and is placed in the first round groove; the lower end of the joint is clamped through the clamping mechanism; the upper end of the joint is fixedly connected with the substrate; and the upper end of the substrate is detachably connected with the lower end of a three-jaw chuck. Compared with a traditional structure, thedevice is simpler in structure and suitable for the positioning, clamping and transposition process in the machining process of ultra-precise parts, reduces 80% of the stop time of a machine tool, improves the working efficiency by 2-3 times, and can reduce the transposition operation error below 0.001 mm in the machining process.

Description

technical field [0001] The invention relates to a positioning device, in particular to a high-precision and rapid positioning device based on the positioning principle of an end tooth disc, which belongs to a new type of machine tool fixture. Background technique [0002] The quick positioning device is a unique positioning and locking device, which can reduce the error caused by the clamping process as much as possible. Its advantages of high efficiency and convenience make it not only used in ordinary machining, but also in the field of ultra-precision. Most parts in the ultra-precision field are produced in small batches, especially customized parts. For some parts, they need to be frequently disassembled to special testing equipment for size and shape inspection during the processing process. If the error between the two parts is well controlled, the final machining accuracy cannot be guaranteed. Therefore, it is necessary to use the same set of rapid positioning syste...

AI Technical Summary

Problems solved by technology

However, due to the extremely high requirements for dimensional accuracy and shape accuracy in the ultra-precision field, the current quick clamping and positioning system can no longer meet this requirement.

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