Centering adjustment device and adjustment method

Abstract

The invention relates to a centering adjusting device and adjusting method, and belongs to the field of coaxiality calibration. The device comprises a main shaft loading chain, a centering adjusting mechanism, a detecting and feedback mechanism and a rack, wherein the centering adjusting mechanism is arranged on the main shaft loading chain, the main shaft loading chain is arranged on the rack, and the detecting and feedback mechanism is arranged on the rack and used for detecting and controlling the adjustment amount. The device is installed on a testing machine, can realize the adjustment ofany angle and direction on a loading chain in the adjustment of five degrees of freedom (loading chain installation orthogonal plane two degrees of freedom, rotate two degrees of freedom and loadingchain axial rotation), can realize unidirectional stretching on a uniaxial tensile testing machine, can be additionally provided with a set of adjusting device to realize the centering adjustment of the biaxial tension, is high in adaptability, can install other types of testing machines, and meanwhile, can be matched with clamps or loading chains with different shaft diameters. The centering adjusting device is small in space occupation, simple in operation and repeatable in adjustment, the experimental precision can be improved, and the measured data are more accurate.

Description

technical field [0001] The invention relates to the field of coaxiality calibration, in particular to a centering adjustment device and an adjustment method. The centering adjustment device is installed on a testing machine to calibrate the coaxiality of a loading chain. Background technique [0002] With the development of the economy and the advancement of science and technology, the testing machine industry is booming like mushrooms after a rain, and various testing machines for different purposes are emerging. The testing machine can measure the mechanical properties, process properties, internal defects of materials and check rotating parts. Dynamic unbalance and other aspects, and more and more widely used in machinery industry and other fields. The coaxiality adjustment method of the traditional testing machine is manual adjustment, but the efficiency of manual allocation is low, and the standard is different, the adjustment amount is limited, and it is easy to cause ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a centering adjustment device and adjustment method, which solves the problem that the loading chain of the existing testing machine needs to be disassembled and cannot be adjusted in real time, and fills the gap in the prior art to a certain extent ; This device solves the uncontrollable accuracy of manual assembly adjustment, realizes one adjustment, good stability without repeated adjustment, high reliability, and at the same time, the adjustment axis is indexed to make the adjustment amount reach 0.01mm, and the adjustment range is large (±0.5 mm), the radius of the spherical surface on the parent body can be adjusted to reach the center of the loaded specimen, and the adjustment angle can be ±0.35°; the combination of the device and the fixture turntable can realize the adjustment of five degrees of freedom (the loading chain is installed with two degrees of freedom on the orthogonal plane and two degrees of rotation) degrees of freedom and the axial rotation of the loading chain) can realize the adjustment of any angle and direction on the loading chain; the vulnerable parts inside the adjustment device and the parts requiring high positioning accuracy are all standardized designs, and easy-to-process parts such as pin sleeves and gaskets are used. Standard parts, reducing loss and improving the service life of the device, while the stiffness of the whole device has no effect; the device does not bear the load of the test loading chain, and the stiffness of the adjustment device has no effect on the stiffness of the whole machine system. The external force of the adjustment device is borne by the whole machine, which improves the strength of the device and the adjustment module is installed on the same parent body to increase the rigidity of the device and make it more stable and safe during the loading process; the flange connection is used in the connection loading chain to improve the strength , to eliminate the gap; each intermediate adjustment block is positioned by two pins on the parent body and the lower surface of the parent body (two pins on one side); the invention is installed on the testing machine, and the device has strong adaptability. Loading chains with different shaft diameters can be installed; other types of testing machines such as compression testing machines, torsion testing machines, bending testing machines, universal testing machines, etc. can also be installed; various types of fixtures can be matched, the space is small, and the operation is simple. Repeated adjustment accuracy is high; at the same time, not only can one-way stretching be carried out on the uniaxial tensile testing machine, but also an additional adjustment device can be added to realize two-way stretching, which can improve the experimental accuracy and make the measurement data more accurate

Images