Universal test machine

Abstract

The invention discloses a universal test machine, belonging to a detection device, which structurally comprises a worktable, a pedestal, columns, a screw, an upper crossbeam and a lower crossbeam. A lower end of the screw is fixedly arranged on the pedestal by nuts, an upper end of the screw passes through the worktable to be connected with the lower crossbeam, an oil cylinder is arranged on the upper part of the pedestal, a piston is arranged in the oil cylinder, the upper end of the piston is connected with the worktable, hydraulic pressure clamp systems are respectively arranged in the upper crossbeam and the lower crossbeam, each hydraulic pressure clamp system comprises a jaw plate and a jaw, the columns comprise four columns, lower ends of the four columns are respectively and fixedly arranged on the worktable, upper ends of the four columns are respectively fixedly arranged on the upper crossbeam, the upper crossbeam and the lower crossbeam are respectively of semi-open type structures, and the jaw plates are matched with the jaws in a dovetail way. The universal test machine has the characteristics that rigidity of a mainframe is greatly increased; by the adoption of the semi-open typed structures for the upper crossbeam and the lower crossbeam, rigidity is increased, deformation is not easy to occur, and cost is lowered; and clamp centering degree of the upper crossbeam and the lower crossbeam is increased, and test accuracy is increased and the like.

Description

Technical field [0001] The invention relates to a detection device, in particular to a universal testing machine for detecting the tensile, compression and bending mechanical properties of metallic materials or non-metallic materials. Background technique [0002] At present, the testing machine that uses disk motor to drive the worm gear to adjust the test space adopts a four-column load frame structure composed of two uprights and two lead screws. The wedge-shaped jaw seat (upper beam and lower beam) is a fully open structure with arc-shaped matching The neutrality of the jaws and the jaws of the jaws is poor, which affects the accuracy of the test results. This kind of testing machine has low overall stiffness and low stiffness of the jaw seat. After a long period of use, the wedge-shaped mouth of the jaw seat is prone to deformation. The upper and lower beams with higher costs are scrapped. It not only delayed the user's use, but also caused huge economic losses for the manu...

AI Technical Summary

Problems solved by technology

[0002] At present, the testing machine that uses a disc motor to drive the worm gear to adjust the test space adopts a four-column load frame structure composed of two upright columns and two screw screws. The wedge-shaped jaw seat (upper beam and lower beam) is a fully open structure with arc fit The neutrality between the jaws and the jaw clamping plate is poor, which affects the accuracy of the test results. The overall stiffness of this testing machine is low, and the stiffness of the jaw seat is low. After many times of use for a long time, the wedge-shaped opening of the jaw seat is prone to deformation. Make the costly upper and lower beams scrapped

Not only delayed the use of users, but also caused huge economic losses for manufacturers

Currently, there is no good solution

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