拉力试验机又名万能材料试验机。万能试验机是用来针对各种材料进行仪器设备静载、拉伸、压缩、弯曲、剪切、撕裂、剥离等力学性能试验用的机械加力的试验机，适用于塑料板材、管材、异型材，塑料薄膜及橡胶、电线电缆、钢材、玻纤维等材料的各种物理机械性能测试为材料开发，为物性试验、教学研究、质量控制等不可缺少的检测设备，拉力机夹具作为仪器的重要组成部分，不同的材料需要不同的夹具，也是试验能否顺利进行及试验结果准确度高低的一个重要因素。
The tension test machine is also known as the universal material testing machine. The universal testing machine is a mechanical test machine used to carry out mechanical tests for mechanical properties, such as static loading, stretching, compression, bending, shearing, tearing and stripping of all kinds of materials. It is suitable for various materials such as plastic sheet, pipe material, profile, plastic film and rubber, wire and cable, steel, glass fiber and so on. Mechanical properties test for material development, for physical testing, teaching research, quality control and other indispensable testing equipment, pulling machine fixture as an important part of the instrument, different materials need different jig, is also an important factor in the test whether the accuracy of the test results and the accuracy of the test results.