Device for precisely boring lug hole of hinge beam

Abstract

The invention discloses a device for precisely boring a lug hole of a hinge beam, which comprises a boring jig frame, a power device and a boring rod, wherein one end of the boring rod is connected with an output shaft of the power device through a universal joint coupler, the bottom of the boring jig frame is provided with a lifting rotating mechanism, a plurality of groups of boring rod supports are symmetrically arranged on the boring jig frame, positioning holes of each group of boring rod supports are positioned on the same axle line; the boring rod supports comprise bases, glands and bearing bodies, the bases and the glands are of a split structure, the bearing bodies are arranged in the boring rod supports; and a smaller gap between the boring rod and a sliding connecting sleeve ofthe bearing bodies is in the term of meeting the requirement of precision processing. The device has high processing precision, saves processing time and increases production efficiency by above 50 percent.

Description

[0001] technical field [0002] The invention relates to a device for processing hinge beams, in particular to a device for finely boring ear holes of hinge beams. Background technique [0003] In the process of manufacturing artificial diamond, the hinged beam type six-sided hydraulic press equipment is usually used, and the hinged beam is an indispensable key component of the equipment. The ear holes and the cylinder body of the hinged beam have extremely high position matching accuracy during assembly. , in the current existing technology, the special hinged beam fine boring unit is mainly composed of a boring frame for fixing the hinged beam, a machine bed, a power unit and a boring bar. The ear holes on one side of the beam are fine-bored, and then the hinged beam is hoisted and rotated by 90° with a crane and then fixed again. The boring bar is fine-boring the ear holes on the other side, and the ear holes on the four sides of the hinge beam are completed in turn. In ...

AI Technical Summary

Problems solved by technology

In the process of fine boring the four side ear holes, due to the constant adjustment of the position relationship and repositioning of the hinge beam, the crown block must be used many times during the processing process. Therefore, the production efficiency of this equipment is not only low, but also the processing accuracy is difficult to guarantee.

[0004] Some enterprises have learned from the existing technology and designed the fixed table with the function of lifting and rotating, such as Chinese patent, patent number: 200920170521.6, this kind of equipment saves the waiting time of the crane, but this kind of equipment still has unavoidable The disadvantages of resistance are: first, the positioning of the hinge beam is not accurate, and it is difficult to guarantee the accuracy of the ear hole after processing; second, the gap between the center hole of the boring bar support and the boring bar is large, and the roundness of the processed ear hole cannot meet the requirements. At present, the optimal clearance between the boring bar and the support hole is about 0.12 mm. If the clearance is too large, the precision of the machined ear hole will be too low to be used; if the clearance is too small, it is difficult to insert the boring bar into the support hole It is easy to be scratched, and on the other hand, the locking phenomenon between the boring bar and the support hole is easy to occur; thirdly, in the process of fine boring the ear hole, the two ends of the boring bar are set on the support seat after passing through the ear hole, because the boring bar and the support seat The hole is purely sliding friction, wears quickly, and it takes time to stop and replace, which affects production efficiency; Fourth, because the conventionally used boring bar support is a fixed structure, the alignment of the boring bar about several meters long lifted by the crane is only 0.12 mm Gap (the gap between the boring bar and the bore of the boring bar support hole) is very difficult for the worker to penetrate, and the other end of the boring bar needs to be passed through the other support after the first support hole is penetrated However, the concentricity of the two bearing holes after processing is not high, so it is very time-consuming and laborious to insert the boring bar into the two bearing holes, and the processing time is greatly extended; Whether the accuracy of measuring the ear hole is up to standard, for this reason, it is necessary to continuously pull out the boring bar to measure the ear hole, thus reducing the production efficiency of the enterprise

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