Date: 2013-08-20

TIMKEN bearings machining precision Profile

Machining accuracy requirements affect TIMKEN bearing degrees of freedom must be limited; does not affect TIMKEN bearing the machining accuracy requirements of the degrees of freedom can be restricted or may not be limited, depending on the circumstances. The workpiece must be limited in accordance with workpiece machining the requirements to determine the degree of freedom is the most important issue that should be addressed in the workpiece positioning.
Due to the requirements of the groove depth dimension in the direction A2, the requirement to limit the freedom of movement of the z-direction; in parallel due to the requirement of the trench bottom surface and the c-plane, and therefore around the y To limit the freedom of rotation of the x-axis X and around the y-axis of the rotational degrees of freedom; due To ensure the groove length A1, and therefore want to limit the freedom of movement in the x direction X; due to the guide groove to the center of the platen, consistent with the long hole, the degree of freedom of movement in the y direction y and about the z-axis of the rotational degrees of freedom limit . Thus, in the processing of the guide groove, the six degrees of freedom should be restricted. This six degrees of freedom are limited positioning called positioning.
Surface grinder grinding plane, assurance plate thickness B, while the machined surface and the bottom should be parallel, then, according to the processing TIMKEN bearing requirements simply limit the Z, X, Y, three degrees of freedom can be. According to the the actual parts processing requirements limit the degree of freedom less than six positioning method called incomplete positioning. Workpiece positioning method is called when the processing of a process, according to the the parts processing requirements should be limited degrees of freedom is not limited to owe positioning. . Owe positioning in the machining of the part is not allowed the emergence.

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