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Special fixture for clamping thin workpieces

A technology for special fixtures and thin parts, applied in clamping, positioning devices, manufacturing tools, etc., can solve the problems of large processing deformation, reduced processing efficiency, poor workpiece rigidity, etc., to improve process rigidity, processing efficiency and precision. simple structure

Inactive Publication Date: 2009-09-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of clamping method, due to the poor rigidity of the workpiece and large machining deformation, in order to ensure the accuracy, it can only reduce the cutting amount and reduce the processing efficiency

Method used

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  • Special fixture for clamping thin workpieces
  • Special fixture for clamping thin workpieces
  • Special fixture for clamping thin workpieces

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] Figure 1 to Figure 5 As shown, it includes: head tip 1, middle gasket gasket 2, hole plug 3, head stopper 4, low melting point alloy 5, vacuum chamber 6, air guide hole 7, pipe joint 8, tail stopper 9. Tail double top 10, double top positioning plate 11, positioning bushing 12, double top seat 13, clamp body 14, screw 15, positioning pin 16, thin workpiece 17, head cover sealing ring 18, silica gel mud 19, spacer Stopper cover 20, movable baffle plate 21, spring 22, guide post 23, sealed water container 24, cover plate 25, mandrel 26 with swim bladder, anti-slip silicone ring 27, water 28 etc. in the container.

[0017] Such as figure 1 As shown, the clip body 14 is a semicircular tube structure with mounting shafts at both ends. The top tip 1 of the head is installed on the head shaft of the clamp body 14, and the extension length can be adjusted within a certain range. The tail double center point 10 is installed on the double center point seat 13, and can slide a...

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Abstract

The invention relates to a special fixture for clamping thin workpieces, which is characterized in that: a center on a head part is arranged on a head shaft of a fixture body; a dual center on a tail part is arranged on a dual center seat which is arranged on a tail shaft of the fixture body; a dual center positioning plate is positioned by a positioning pin and arranged on a positioning lining; the lining is arranged on the fixture body; a head holding latch is absorbed on the inner cylindrical surface of the fixture body through a magnetic insert, and a tail holding latch is absorbed on the inner cylindrical surface of the fixture body through the magnetic insert; a low melting point alloy is cast in a sealed cavity, and a sealing ring is precast on an air guide port; a vacuum chamber body is arranged on the outer cylindrical surface of the fixture body; and the fixture body is arranged on a base body. The special fixture has a simple, compact and reasonable structure; and the low melting point alloy is adopted to cast and form the support surface of a workpiece, and the workpiece is closely adsorbed on the support surface through vacuum so as to realize the clamping of complicated thin workpieces and improve the technical rigidity and the processing efficiency and precision of the thin workpieces greatly.

Description

technical field [0001] The invention relates to a special fixture for clamping thin parts, in particular to a four-axis or five-axis machining center used for clamping complex thin parts. Background technique [0002] At present, for complex thin parts like steam turbine blades, with a thickness less than 1mm, a width of more than 150mm, and a length of more than 1000mm, the existing methods are forging blanks, rough milling by machining centers, and manual polishing. There is no special fixture to complete the processing of parts on the machining center, eliminating the need for subsequent manual polishing. The currently used milling fixture is a method in which the center holes at both ends are positioned and the two ends are clamped and suspended in the middle. In this clamping method, due to the poor rigidity of the workpiece, the processing deformation is relatively large. In order to ensure the accuracy, the cutting amount can only be reduced to reduce the processing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06
Inventor 吕彦明滕树新
Owner JIANGNAN UNIV
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