Expansion sleeve type turning and grinding mandrel clamp

Abstract

The expansion sleeve type turning and grinding mandrel clamp comprises a turning mandrel body and a spring expansion sleeve, the two ends of the turning mandrel body are each provided with a B-type center hole and a cylindrical section, and the turning mandrel body is provided with a taper section, a guide section and a threaded section; the spring expansion sleeve is installed on the outer side of the taper section of the turning mandrel body, and the taper of the interior of the spring expansion sleeve is the same as that of the taper section of the turning mandrel body. One side of the taper section is a guide section, the outer side of the guide section is sleeved with a clamping guide sleeve, one side of the guide section is a threaded section, and the outer side of the threaded section is sleeved with a nut. The device is simple in structure, reliable in precision, low in cost, capable of being replaced on a universal machining tool at any time, convenient to switch and high in machining efficiency; the clamping guide sleeve ensures that the spring expansion sleeve is straightly pressed, the to-be-machined part is clamped, the machining efficiency is improved, and after machining is completed, the workpiece can be easily taken down after the nut is loosened by a small distance, and then operation is repeated.

Description

technical field [0001] The invention relates to the technical field of clamps, in particular to an expanding sleeve type turning and grinding mandrel clamp. Background technique [0002] The sleeve type fixture is a form of fixture that eliminates gaps that should be more and more widely used in the machining industry, especially in gear machining. The traditional expanding-sleeve grinding jig is to make the inner conical surface of the expanding sleeve fit with the outer conical surface of the mandrel of the fixture by pressing the nut, so as to generate an outward tightening force, so as to complete the tightening of the inner hole of the part. . [0003] At present, the general expanding sleeve type car fixtures all use the expanding sleeve to locate the inner hole of the part to be processed. The specific process is to pull the tie rod to open the expanding sleeve, and the expanding sleeve tightens the inner hole of the part, which plays the role of positioning and tigh...

AI Technical Summary

Problems solved by technology

[0004] In actual production, many parts with internal splines (internal teeth) need to be turned and ground after processing the internal splines (internal teeth), but because the technical requirements are based on the large diameter of the internal splines (internal teeth) Or the tooth side, when using other shapes and surfaces as the basis for processing, there must be a transformation of the basis, which reduces the overall accuracy of the part, so the basis for processing needs to be consistent with the standard for technical requirements

At the same time, when the parts are produced in small batches or individually, those fixtures with complex structures will inevitably increase the cost. At the same time, the positioning, connection and adjustment of the fixtures and processing machine tools are complicated, the processing cycle is prolonged, and the production efficiency is reduced.

And most of the expansion sleeve fixtures can only be applied to the chuck connection lathe, so when the lathe does not have a chuck or when the size of the chuck is not suitable, it cannot work, so that the work efficiency is reduced, and the applicable range of the device is small. low rate

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