Clamping device and use method

Abstract

The invention provides a clamping device for clamping thin-wall curved-surface parts and flexible parts. The clamping device comprises a magnetic force adjusting unit, a height adjusting unit, a computer and a pressure sensing sticker; the magnetic force adjusting unit comprises a box body, magnetorheological fluid and two same magnetic force adjusting mechanisms, and the magnetic force adjustingunit is used for adjusting the clamping force between the magnetorheological fluid contained in the box body and parts clamped in the magnetorheological fluid; and the height adjusting unit comprisesa lifting assembly and a height driving assembly, and the height driving assembly is used for adjusting the height of the parts. The clamping device has the advantages that the operation is flexible,the adaptability to the size of the parts is high, the solidification effect of the magnetorheological fluid can be adjusted in time according to the rigidity of the parts and the strength of the vibration in the machining process, the clamping and supporting effect and the vibration reduction effect are obvious, and the stability, the accuracy and the reliability of part machining are effectivelyensured.

Description

technical field [0001] The invention relates to the field of clamping equipment, in particular to a clamping device and a use method. Background technique [0002] In the field of manufacturing, thin-walled and flexible parts are very common workpieces to be processed. The machining accuracy control of these workpieces has always been a difficult problem, because the thin-walled parts have poor rigidity and weak strength. During the processing, the thin-walled parts will undergo local deformation and overall processing deformation, especially the deformation caused by clamping technology. The reason affects the processing quality and accuracy. For example, in the industrial production of these components, machine tool fixtures are commonly used to position and clamp the workpiece, but because the clamping force is difficult to grasp, the clamping force is too small, which will lead to the movement of the workpiece during the processing, resulting in the failure of the proce...

AI Technical Summary

Problems solved by technology

[0005] 1. The quality requirements of combined components are high, and the initial investment cost is high. Because it is made of combined and superimposed "building blocks", this kind of flexible fixture has poor rigidity, it is difficult to adapt to heavy cutting, it is difficult to clamp irregular shape parts, and it is difficult for assembly and debugging. Requires high technology; at the same time, many types and quantities of parts require professional management, and the cost of use and management is high;

[0006] 2. The fixture adjustment time is long, the cost is high, and the clamping force is difficult to adjust and control, the adaptability is poor, and the fixture adjustment is too dependent on experience;

However, due to the large amount of heat generated by the electromagnet during work, an additional water cooling device is required, which makes the clip body bulky, and the circuit layout is complicated. The electromagnetic device has high waterproof requirements, which greatly limits the application scenarios.

[0008] 4. In the process of mechanical processing, workpiece fixtures are needed, and vibration often occurs. It will not only leave vibration marks on the processing surface, but also affect the processing quality of the workpiece. The stability is poor and the wear of the tool is aggravated.

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