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Adaptive design of fixture for thin-walled shell/cylindrical components

A technology for cylindrical parts and fixtures, which is used in the testing of machine/structural parts, measuring/indicating equipment, drilling/drilling equipment, etc., and can solve problems such as no metal sleeve and no explanation.

Inactive Publication Date: 2010-03-03
UNIV OF SHEFFIELD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although damping vibration is stated as an objective, it is not explained how this is set up outside of the fixture itself
[0020] US-A-4811962 discloses a similar arrangement, but without the metal sleeve

Method used

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  • Adaptive design of fixture for thin-walled shell/cylindrical components
  • Adaptive design of fixture for thin-walled shell/cylindrical components
  • Adaptive design of fixture for thin-walled shell/cylindrical components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] figure 1 Among them, an internal self-adjusting fixture 100 for internal machining of a thin-walled cylindrical part 10 includes a mounting base 1 in the form of a thick-walled plate having a table ( Not shown) the mounting hole 2 for connection. The positioning pin 3 and the clip 4 position and fix the component 10 on the base 1 .

[0046] The thick-walled rigid mandrel and column 5 are fixed at the center of the base 1 by bolts (not shown). The end of the mandrel 5 is a flange connected with the thick-walled cover 12 . Mounted on the arbor are two modified wheel inner tubes 8 having an inner radius R corresponding to the radius of the arbor 5 . The inner tube 8 is made of synthetic rubber (elastomeric material), which can be inflated to fit the contents confined in the cylindrical part 10 , the supporting mandrel 5 , the mounting base 1 and the cover 12 . Each inner tube 8 has its own inlet valve 9 on its inner surface and is mounted through a corresponding eyele...

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Abstract

A group of fixtures for thin-walled shell / cylindrical components (10) while they are being machined internally and externally, has a mounting base (1 ) having mounting holes, positioning pins and clamps to locate one end of the thin-walled component. A supporting arbour or cylinder (5) is fixed in the base. A circular lid (12) is fixed to the supporting arbour or cylinder and has a wedged step to locate the other end of the cylindrical component for internal and external machining, or the major open end of shell component for internal machining. A pair of modified vehicle wheel inner tubes (8) are disposed around the supporting arbour or cylinder. A multi-layered sacrificial liner (7) surrounds the pressure element and is adapted to fit between it and the thin-walled components. When properly inflated according to the design and validation procedure, the fixture adaptively holds the thin-walled components for machining, with sufficient supporting rigidity and dynamic stability.

Description

technical field [0001] The present invention relates to the self-adjusting design of fixtures for shell-like / cylindrical parts in order to allow them to be machined with sufficient support rigidity and dynamic stability in order to maintain machining accuracy and surface finish to achieve Acceptable Engineering Standards. The invention is particularly suitable for thin-walled components, since in thin-walled components it is difficult to obtain reliable fixation during machining and protection against vibrations. Background technique [0002] According to the theory of structural mechanics well known to those skilled in the art, a shell / cylindrical member is defined as a continuous and curved shaped group of hollow objects with openings. A bowl-like structure is characterized as a shell-like member with a single main opening, while a hollow tubular structure with a through-opening is characterized as a cylindrical member. The walls of both structures have a certain wall th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06B23Q11/00B23B31/30B25B5/06
CPCB23Q17/0976B25B1/20B23B2215/64B23B31/305B25B5/065B23Q3/06Y10T279/1024Y10T29/49998Y10T279/1029Y10T279/1216Y10T279/1087Y10T279/1283B23B31/30B25B5/06B23Q11/00G01M7/022
Inventor 耿遵敏
Owner UNIV OF SHEFFIELD
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