On 2018-08-08 14:48:54
High frequency quenching machine for ball screw induction quenching
Ball screw is a kind of rotating motion and linear motion mutual transformation of rolling functional components, with smooth transmission, precise positioning functions, has been widely used in machine tool transmission, NUMERICAL control equipment, automatic control and other aspects. After quenching, the screw has high hardness, great brittleness and great difficulty in calibration, which is not conducive to mass production of the product. Therefore, it is required to strictly control the screw diameter jump during quenching. The requirement of pitch deformation is based on the general enterprise ball screw production is mostly open raceway and then quenching.
Ball screw surface induction quenching basic process: to quenching of screw groove, shall be made for the match the screw dimension of quenching inductor, heat treatment process parameters: the austenitizing temperature is 860 ~ 880 ℃, after cold treatment of the ball screw in the subsequent processing or basic does not exist because of organization change in use process and affect the size precision of the phenomenon. Through a large number of process tests, to ensure the reliability and stability of the production process. For each series of ball screw, a process test is carried out first according to its quenching and hardening layer structure and depth requirements to determine a process parameter adjustment range. Secondly, in the actual production, it must be adjusted within the parameters to make the quenching hardness and pitch deformation of the screw meet the requirements.