| 摘要 |
An adjustable spur center device for use with lathe machines. The spur center features easily interchangeable center points, one that can be either extended or retracted without removing the spur center from the lathe or dismounting the workpiece, and the other a spring-loaded version that permits an operator to remove or insert a workpiece without having to stop the rotation of the spindle. The spur center also features individually adjustable spurs that can be easily removed for resharpening or replacement.
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