| 摘要 |
530,610. Copying-mechanism. SMITH, E. R. June 28, 1939. No. 18865. [Class 60] [Also in Group XXII] A lathe, grinding, or like machine has a contour-turning attachment comprising a toolholder 30 slidably mounted on a support 20 carrying a segment 25 which is swung on a base 22 about a fixed pivot 21 intersecting the work axis while the radial position of the tool holder is controlled by a templet 40 to shape the rounded end a of a rotating work piece Wand to maintain the tool 12 normal to the work during the cut. The cylindrical and taper part of the work is turned by a front tool 10. The segment is oscillated by a sliding rack bar 27. The tool holder carries a roller 32 and is urged against the templet by a spring. |
