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Before disassembling the radial drill, in addition to measuring according to the professional standards of the machine tool, so that the repairer can understand the wear of the machine tool, it is also necessary to check the looseness of the outer column when it is rotating. If the loose clearance exceeds 0.08mm, after the outer column is disassembled, check the wear of the chain roller bearing and spring steel bar in order to decide whether to repair or replace it. (Guide: Introduction to the three mainstream technologies of domestic mold manufacturing)
How to check the loosening gap: move the dial indicator to the lower surface of the outer column, use the handle to press the spindle against the workbench (if the distance is not enough, you can put a shim on the workbench), and read the dial indicator at this time The reading value of the upper change is the loosening gap when the outer column is rotated. During the measurement, the column should not be clamped, while the rocker arm and headstock are in a clamped state.
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