Multi-station bar stretching robot and stretching method

Abstract

The invention relates to a multi-station bar stretching robot and a stretching method. The multi-station bar stretching robot comprises a rack, a stretching mechanism, a workbench and a conveying device. Transverse movement of the stretching mechanism is matched with longitudinal movement of the conveying device, a sample is clamped, and therefore stretching is further achieved; the conveying device moves relative to the stretching mechanism through a movable multi-station moving disc and conveys a plurality of samples at a time, so that the working efficiency is effectively improved, meanwhile, the clamping devices are each provided with a buffering assembly, two-time buffering is achieved through combination of springs and air compression, the reverse acting force of the stretching mechanism on the clamping devices is effectively relieved, and the clamping device is further protected; and meanwhile, when the moving discs work separately, the stretching mechanism is effectively prevented from influencing the stability of the clamping device, so that the stretching test and the clamping work are effectively and synchronously carried out.

Description

technical field [0001] The invention relates to the technical field of metal material stretching, in particular to a multi-station bar stretching robot and a stretching method. Background technique [0002] Tensile test is used to collect relevant data after the deformation of the material when the sample is subjected to axial load. It is mainly used to measure the elastic deformation, tensile strength, elongation and other performance indicators of the material. On the fixture of the device, a pulling force is applied to the material at a predetermined speed until the material breaks. [0003] In the traditional testing process, due to the rigidity of the metal material and the approximate diameter of the test section of the traditional standard tensile sample, the moment of stretching to the limit fracture has a strong impact on the device, which has a certain impact on the quality of the fixtures at both ends of the sample. impact, the corresponding buffer device is need...

AI Technical Summary

Problems solved by technology

[0004] The buffering device in the prior art achieves buffering only through the deformation of the spring. After long-term use, its deformation performance is unstable, so that the buffering effect cannot be achieved quickly

[0005] The traditional tensile test device manually places the sample in the fixture, and then performs the tensile test after aligning itself with the fixture. The same device can only measure one sample at a time, and it is continuously clamped and lowered, which greatly increases the workload.

Images