| 摘要 |
<p>The present invention provides a measurement pin protection device of a CNC lathe where a cover frame moves backward in measuring work in a case where a cover frame protects a measurement pin during a processing of a workpiece, and which exposes the measurement pin to the outside to measure a tolerance value of the processed workpieces. To this end, the present invention includes: a base; a holder installed in an upper surface of the base; a nut rotatably coupled to the holder, having a hole which penetrates inside the nut; a fixed frame fixated and installed in the nut in a case of penetrating the hole of the nut, and exposing the measurement pin toward the front end; and a cover frame inserted in the fixed frame and reciprocating frontward and rearward by the power of a cylinder installed in the rear side of the fixed frame while having a measurement pin exposing hole on the center of the cover frame to enable the measurement pin to pass through, enabling the measurement pin to expose to the outside or to be covered.</p> |
