Introduction to the imported SKF bearing processing precision

Workpiece positioning, will affect the machining accuracy of imported SKF bearing freedom must limit; Don't affect the machining accuracy of imported SKF bearing, degrees of freedom can limit can not limit, depending on the specific situation. According to the requirement of workpiece machining workpiece must limit the degree of freedom is the primary problem to be solved for workpiece positioning. Due to the size of the groove depth direction A2, therefore required to limit the z direction of the mobile freedom; , because of the requirement trough bottom and c surface parallel x axis rotation degrees of freedom around x and y axis around the rotational degree of freedom to limit y; Due to keep the long slot A1, the mobile x to limit freedom of reason in the x direction; Due to the guide groove in the center of the platen, consistent with the slotted hole, the mobile freedom of reason in the y direction y, and z axis rotation degrees of freedom restrictions. So, in the guide groove machining, six degrees of freedom should be limited. The six degrees of freedom are limited localization way called completely positioning. If grinding plane on the surface grinding machine, guarantee the thickness of B, at the same time the processing surface and bottom surface should be parallel, at this time, in accordance with the requirements of processing imported SKF bearing only limit, X, Y, Z three degrees of freedom. The parts processing requirements based on the actual limit freedom of less than 6 positioning method known as incomplete. Such as artifacts in a process, in accordance with the requirements of parts processing should limit degree of freedom is not restricted locating method called owe positioning. Owe to locate in parts processing are not allowed to appear.