自动涨缩吃刀研磨工具是我厂工人发挥高度积极性,共同研究创造改进的。这个工具是根据加工汽车活塞筒手工进刀的研磨工具改成的。经试验后证明是成功的。它解决了我厂加工某种产品零件的研磨问题。这个产品会一度成为关键,它的孔径为φ50,研磨长度是500 公厘,而需研光 8～ 9,锥 Automatic scaling tool to eat knife grinding plant workers to play a high degree of enthusiasm, common research to create improvements. This tool is based on the processing of automotive piston barrel manually into the grinding tool into. After the test proved to be successful. It solved my factory processing a product grinding parts. This product will once be the key, its aperture is φ50, grinding length is 500 mm, but need to study light 8 ~ 9, cone