Requirements for accuracy in the use of steel bar straightening machine:
The moving parts of the steel bar straightening machine (tool holder, worktable, etc.) move along the guide rails of the basic parts such as the bed, pillars, and beams. Therefore, the role of the guide rail is to support and guide the moving parts, that is, to support the moving parts, and the moving parts are under external forces (the self-weight of the moving parts themselves, the weight of the moving parts). to guarantee that you will move to. workpiece, cutting resistance, traction, etc.). The performance of the guide rail of the steel bar straightening machine directly affects the machining accuracy, bearing capacity and performance of the machine tool. Therefore, the guide rail must meet the following basic requirements:
1. Guidance accuracy
This is the straightness accuracy of the moving parts as well as the mutual position accuracy between the guide rail and the relevant reference plane when the indexing control rebar straightening machine travels along the guide rail. The guide rail must have sufficient guiding accuracy whether it is no-load processing or rolling processing. The main factors affecting the accuracy of the guide rail are the structure of the guide rail, the manufacturing accuracy and assembly quality of the guide rail, and the rigidity of the guide rail and the basic parts.
2. Maintain accuracy
This means that the guide rails of the rebar straightener maintain their guiding accuracy even after long-term use. The wear resistance of the guide rails of the rebar straightening machine is a decisive factor in maintaining the accuracy. This is related to the friction properties of the guide rail and the material of the guide rail. In addition to reducing wear, the rail surface also needs to be automatically corrected and adjusted after wear.
3. The smoothness of low-speed movement
When the power element moves at low speed or slightly displaced on the guide rail, the motion should be smooth and no creep. This requirement is especially important for steel bar straighteners. This is related to the construction type and lubrication conditions of the guide rail. The friction coefficient of the guide rail of the steel bar straightening machine should be small to reduce the frictional resistance. In particular, the coefficient of kinetic friction and the coefficient of static friction should be as close as possible to obtain good results.
