Fast positioning and correction-free fixture

Abstract

The invention relates to the field of rapid-positioning correction-free clamps. The rapid-positioning correction-free clamp comprises a rotary wheel, a rotary shaft, a locking rotary disc, a positioning orientation block and a pressing disc, wherein the back surface of the rotary wheel is fixedly installed on a common lathe rotary mechanism, the rotary shaft is installed in the center of the front surface of the rotary wheel and is divided into three sections, the section near the rotary wheel is a large cylindrical rotary shaft, the section far away from the rotary wheel is a small cylindrical rotary wheel, the middle section is a middle cylindrical rotary shaft, the large cylindrical rotary shaft is provided with a thread, and the locking rotary wheel is screwed at the thread on the large cylindrical rotary shaft. The positioning orientation block comprises a rear central positioning block and a front central positioning block, wherein the rear central positioning block is installed on the large cylindrical rotary shaft at the outer side of the locking rotary disc in a sleeved mode, a low positioning block is installed at the front end of the middle cylindrical rotary shaft of the rotary shaft, the small cylindrical rotary shaft is provided with a thread, and the pressing disc is installed on the small cylindrical rotary shaft. The rapid-positioning correction-free clamp has the advantages of being simple in design, convenient and rapid to use and capable of accurately positioning, centering, clamping and safely and reliably machining a medium-load pump shell body, largely improving production and machining efficiency and pass percentage of machined products, and saving time and labor.

Description

technical field [0001] The invention relates to the field of fast positioning and correction-free jigs, in particular to a medium-load pump casing used for quick positioning and correction-free jigs on ordinary lathes. Background technique [0002] The shell of the medium-duty pump is not a cylindrical shell, and some models are too large. It is difficult to fix and clamp it when it is placed on an ordinary lathe for processing, and it needs to be centered after fixing. The internal distribution of the medium-duty pump shell is irregular. It is difficult to carry out the alignment, and the workpiece will be damaged during processing, and the processing requirements cannot be met, which is time-consuming and labor-intensive, and the production cost is increased. [0003] Original Fixture Features: [0004] 1. One pair of fixtures for one type of product, high management and maintenance costs; [0005] 2. Before each product is processed, it is necessary to correct the coord...

AI Technical Summary

Problems solved by technology

[0004] 1. One pair of fixtures for one type of product, high management and maintenance costs;

[0005] 2. Before each product is processed, it is necessary to correct the coordinate center of the clamped product, which is time-consuming and labor-intensive;

[0006] 3. The structural part of the inner cavity is a key part of this type of product, and the tolerance margin of the casting blank is relatively large, and there are many defects in the inner cavity of the blank, so the accuracy of product center alignment is low;

[0007] 4. After the fixture is clamped, the stability of the fixture itself is poor (three-jaw chuck clamping), and the frequency of repeated correction of the fixture is high

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