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。
Tension testing machine is also known as universal material testing machine. Universal testing machine is used for static load, tension, compression, bending, shearing, tearing, peeling and other mechanical properties testing of various materials. It is suitable for plastic sheets, pipes, profiles, plastic films and rubber, wires and cables, steel, glass fibers and other materials. Physical and mechanical performance testing is the development of materials, the indispensable testing equipment for physical property testing, teaching and research, quality control, etc. As an important part of the instrument, tension machine fixture needs different fixtures for different materials, which is also an important factor of whether the test can be carried out smoothly and the accuracy of the test results.