High-precision spiral positioning and clamping device

Abstract

The invention belongs to the field of aviation equipment manufacturing, and relates to a high-precision spiral positioning and clamping device which comprises a threaded pin, a variable-diameter central spindle, a steel ball, a gasket, a spring, an outer hexagonal nut, a pressing rod and a handle. The threaded pin is provided with a conical head and is provided with at least three radial holes; the steel ball is arranged in the holes; the excircle of the middle part of the threaded pin has precision; the rear end of the threaded pin is in threaded connection with the outer hexagonal nut; the tail end of the threaded pin is in threaded connection with the handle; the pressing rod penetrates through the handle so as to be inserted into the threaded pin; the variable-diameter central spindleis inserted into the threaded pin; the front section of the variable-diameter central spindle is matched with a guide hole in the threaded pin so as to outwards push the steel ball along the radial holes of the threaded pin; the middle section of the variable-diameter central spindle penetrates through the spring; the rear end of the variable-diameter central spindle is in threaded connection withthe pressing rod; and the pressing rod is pressed down so as to push the variable-diameter central spindle to retract the steel ball. The high-precision spiral positioning and clamping device provided by the invention solves the problem that since one end of a product to be connected or positioned is limited in space, the device can be only inserted from one side. Fast pressing, accurate positioning and fast loosening are realized.

Description

technical field [0001] The invention belongs to the field of aviation equipment manufacturing and relates to a high-precision screw positioning clamping device. Background technique [0002] In the final assembly workshop, there are a large number of aircraft assembly fixtures, which complete the assembly of products from components to components and final assembly. Among them, the important key parts are assembled by optical tool ball, so the six degrees of freedom in space are completely separated. This requires fast connection and precise positioning of separate components after the space tool ball value is adjusted. The existing clamping locator continues to use threaded pins, handle nuts and cards. Such as figure 1 , its structure is simple and easy to use, and it can also realize fast clamping and precise positioning. However, when it is used, the card is required to be clamped on one side of the connected product, and the other side is tightened with a handle nut,...

AI Technical Summary

Problems solved by technology

If there is limited space at one end of the two parts to be connected, the current clamping and positioning device is not applicable

For machine tool fixtures, when using conventional pins for positioning, it only plays the role of positioning and cannot realize the clamping function, and it is necessary to add a pressure plate

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