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Movable gripping head of Young's modulus instrument

A Young's modulus, movable chuck technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of difficulty in instrument installation and debugging, increase the error of experimental results, and difficult to change the chuck, and achieve the elimination of point or Linear contact friction to ensure stability and avoid skew effects

Inactive Publication Date: 2008-08-13
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the currently known movable chucks used in Young's modulus measuring instruments can achieve the above-mentioned effects. Among them, the steel wire does not occupy the center of the chuck, and tools must be used when the chuck is opened and closed. It is difficult to change the upper and lower positions of the chuck. Point-like or linear contact friction with the hole wall of the plate is a common problem
These problems not only make it difficult to install and debug the instrument, but more importantly, increase the error of the experimental results.

Method used

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  • Movable gripping head of Young's modulus instrument

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] Take a section of brass rod with a length of 30mm and a diameter of 15mm, drill a through hole with a diameter of 0.8mm longitudinally on the center line of the rod, and then use a lathe to reduce the diameter of this section by 3mm on the 1 / 2 part of the rod. Cut a 2mm deep keyway along the longitudinal direction of this section, and then chamfer the end of this section to 5×45°, and then use a wire cutting machine to cut the remaining section into four uniform lobes along the longitudinal direction. The width of the slit gap is less than The diameter of the steel wire to be measured is used to form a mandrel. Take a steel rod or brass rod with a length of 45mm and a diameter of 21mm. Drill a through hole with a diameter of 0.8mm on the center line, and then set one end of the steel rod or brass rod. The hole is enlarged, and a shape key is installed in the longitudinal direction of the hole wall of the reaming part, so that the enlarged hole and the key are in a dynamic f...

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Abstract

An active clamping head of Young's modulus gauge is composed of core bar, clamping head jacket and clamping head cap to make measured steel wire be set at center of clamping head for easy operation and accurate measurement.

Description

1. Technical Field [0001] The invention relates to the manufacturing technology of a Young's modulus measuring instrument, in particular to the manufacturing technology of a steel wire movable chuck in the measuring instrument. 2. Background technology [0002] The steel wire to be measured in the Young's modulus measuring instrument must be fixed with two chucks, one is a fixed chuck, the other is a movable chuck, the technical requirements of the fixed chuck are low, and it is easy to implement. The technical requirements of the chuck are very high. The ideal movable chuck should be able to accurately clamp the steel wire with a diameter of less than 1 mm in the center of the chuck; the chuck can be easily changed up and down at any time by hand without tools. ; The chuck and the hole wall of the optical lever support plate form a uniform clearance fit. None of the currently known movable chucks used for Young’s modulus measuring instruments can achieve the above effects. Among...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/04G01N3/26
Inventor 梁德富何原
Owner SICHUAN UNIV
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