A full degree of freedom restraint fixture for impact fatigue testing machine

An impact fatigue and testing machine technology, applied in impact testing, strength characteristics, testing of machine/structural components, etc. Small footprint, easy disassembly, and reliable sample clamping

Active Publication Date: 2017-12-01
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to propose a full-degree-of-freedom tester for impact fatigue testing machines, aiming at the defects that the impact fatigue testing machine fixtures cannot hold rectangular cross-section samples of different lengths, and cannot guarantee the safety and reliability of clamping samples under impact. Constrained fixture, which can be used to clamp rectangular cross-section samples of any size, and can constrain all degrees of freedom of the sample, and is equipped with a self-locking device in the impact direction to ensure the reliability and safety of sample clamping

Method used

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  • A full degree of freedom restraint fixture for impact fatigue testing machine
  • A full degree of freedom restraint fixture for impact fatigue testing machine
  • A full degree of freedom restraint fixture for impact fatigue testing machine

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 1 , 2 As shown in and 3, a full-degree-of-freedom restraint fixture for an impact fatigue testing machine is composed of a distance adjustment mechanism, an X-direction clamping mechanism, a Y-direction clamping mechanism, a Z-direction clamping mechanism, and a Z-direction clamping self-locking mechanism 19 composition. The distance adjustment mechanism is used to adjust the distance between the two sample support seats to adapt to samples of different lengths; the X-direction clamping mechanism, Y-direction clamping mechanism and Z-direction clamping mechanism are used to clamp the sample, and all the samples are restrained freely. Degree; Z-direction clamping self-locking mechanism is used to prevent the Z-direction clamping mechanism from loosening in the impact direction.

[0026] Such as Figure 4 and 5 As shown, the dis...

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Abstract

The invention discloses a fixture constrained by full degrees of freedom for an impact fatigue testing machine. Under the reciprocating impact of the impact fatigue testing machine, the general fixture cannot guarantee reliable clamping, and may even cause damage to the fixture itself. The present invention is composed of a distance adjusting mechanism, an X-direction clamping mechanism, a Y-direction clamping mechanism, a Z-direction clamping mechanism and a Z-direction clamping self-locking mechanism; The length of the sample; the X-direction clamping mechanism, the Y-direction clamping mechanism and the Z-direction clamping mechanism are used to clamp the sample and constrain all the degrees of freedom of the sample; the Z-direction clamping self-locking mechanism is used to prevent The Z-direction clamping mechanism is loose. The invention can be used for clamping a rectangular cross-section sample used in an impact fatigue testing machine, can restrain all degrees of freedom of the sample, and is provided with a self-locking device in the impact direction, thereby ensuring the reliability and safety of sample clamping.

Description

technical field [0001] The invention belongs to the technical field of fixtures, and relates to a full-degree-of-freedom-constrained fixture for an impact fatigue testing machine, which is specially used for clamping a rectangular cross-section sample subject to the vertical reciprocating impact of the impact fatigue testing machine. Background technique [0002] The components of the mechanical system are sometimes subjected to repeated impact loads, and their impact fatigue characteristics need to be evaluated. At present, domestic impact fatigue testing machines have not yet produced mature products, and the fixtures for clamping impact fatigue testing machine samples are quite lacking. Different from the vertical clamping of the existing fatigue testing machine, the sample of the impact fatigue test is generally clamped in the horizontal direction, and because the sample is continuously subjected to reciprocating impact, the general fixture cannot guarantee reliable clam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/08G01N3/04
CPCG01M7/08G01N3/04
Inventor 秦玉冬胡明张鹏钱萍周迅赵永翔陈文华
Owner ZHEJIANG SCI-TECH UNIV
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