(1) The way to solve the problem of idler shaft processing is to carry out economic CNC transformation of the ordinary lathe originally used for idler production. In the transformation, an economical open-loop CNC system is adopted, and its servo system is powered by steppers Machine driven.
(2) Design the plum blossom tip that can automatically and accurately limit the axial direction. It solves the problem that the axial positioning is affected by the size of the center hole when the double center positioning of the roller shaft is located, and the turning power can be transmitted from the shaft end, so that the supporting shaft can complete the finishing of the journal at both ends in one clamping on the CNC lathe, and the coaxiality error is eliminated. (3) Using the axial positioning accuracy of the numerical control device, two circlip grooves are turned out in a clamping process, which solves the problem that it is difficult to ensure the dimensional accuracy of the opening of the two circlip grooves due to the U-turn processing.
(4) Develop a new type of roller skin boring machine. In view of the characteristics of thin-walled cylinders that are easy to deform under stress, arc-shaped jaws are used to increase the clamping contact area.
(5) The jaws of the clamp are driven by an automatic centering mechanism with left and right sides, and a hydraulic cylinder. It solves the problem of serious eccentricity between the bearing hole and the outer circle of the roller and the deviation of the diameter jump of the roller due to the size error of the outer diameter of the steel pipe raw material.
(6) The self-developed machine tool microcomputer control system is used to automatically control the auxiliary actions such as machine tool feed and upper and lower workpieces, positioning and clamping of the fixture, so as to improve the processing efficiency of the machining accuracy of the machine tool.
Roller production equipment and detailed parameters
The production process of idlers is small varieties and large quantities, and the mass production products are stereotyped products, which usually use general equipment equipped with special process equipment. The selection of roller processing equipment is based on this principle, using special machine tools for rollers, and equipment corresponding to each process.
