Tensile test fixture

Abstract

The invention discloses a tensile test fixture, which comprises a base, a top cabinet arranged on the top surface of the base, a top frame arranged on the top surface of the top cabinet, stand columns arranged between the base and the top frame, a lower fixture arranged on the top surface of the base and an upper fixture arranged on the top of the lower fixture, an automatic blanking device is disposed on the front surface of the base, the stand columns are inserted into the four corners of the upper fixture in a penetrating mode, the top surface of the top frame is in bolted connection with a first hydraulic cylinder, the first hydraulic cylinder is connected with the top surface of the upper fixture through a hydraulic rod, and the side surface of the hydraulic rod is sleeved with a protection sleeve in an embedded mode. A buffer plate can play a role in buffering and prevent the situation that the extrusion force of a fixed clamping plate is too large to cause metal piece deformation and affect the accuracy of a tensile test result, a positioning block on a clamping device is matched with a positioning groove in a sliding block, it is guaranteed that the position of the metal piece is matched with the fixed clamping plate, automatic clamping of the metal piece is achieved, manual adjustment is not needed, and the safety is higher.

Description

technical field [0001] The invention belongs to the technical field of metal stretching, in particular to a clamp for tensile testing. Background technique [0002] Metal stretching will use a special metal tensile testing machine, which fixes the two ends of the metal through clamps, then applies tension, and finally breaks the metal piece, and records relevant data during the metal stretching process, metal tensile testing machine It is mainly used to test the conventional mechanical performance indicators of various metal materials, and the professionally designed automatic control and data acquisition system realizes the full digital adjustment of the system; [0003] The current clamps for tensile tests need to manually place the metal parts on the clamps for fixing, which poses a great safety hazard. The clamps directly act on the surface of the metal parts, which easily leads to excessive extrusion force on the metal parts and deformation of the metal parts. , affect...

AI Technical Summary

Problems solved by technology

[0003] The current clamps for tensile tests need to manually place the metal parts on the clamps for fixing, which poses a great safety hazard. The clamps directly act on the surface of the metal parts, which easily leads to excessive extrusion force on the metal parts and deformation of the metal parts. , affecting the accuracy of tensile test results

Images