GB346944A - Improvements relating to puncher-slotting machines - Google Patents

Abstract

346,944. Slotting machines. MUIR & CO., Ltd., W. and WOOD, V. C. N., Sherbourne Street, Strangeways, Manchester. March 15, 1930, No. 8437. [Class 83 (iii).] A slotting-machine of the puncher type is provided with a head a which carries the vertical tool ram b and is fed intermittently during operation and continuously at high speed for adjustment on horizontal ways while the work table c, which moves transversely of the tool-head, is also provided with an intermittent operative feed and a quick-traversing setting-feed. The quick traverse movements are derived from a motor d which is connected through gears e, f, g, i to a nut j on the traversing screw j<1> of the table and through gears e, f, g, h, k to a screw m operating the head a. The reciprocation of the tool slide is effected by a motor n which acts through gears o .. r and crank pin s or a slotted lever t engaging the tool slide in the manner described in Specification 26039/10, [Class 83 (iii), Metals, Cutting]. The intermittent feeds are derived from the crank pin s which engages a slotted member u carrying a pin v actuating a Geneva wheel w, the latter being connected through gears y, change-speed gears z, and reversing bevel gearing 2 to the shaft which operates the screw m and the nut j. By suitable clutches, the feed movement may be imparted either to the head a or to the table c, or to both. The intermittent feed is disengaged when the motor d is in motion. The slot u<1> is curved to correspond with the path of adjustment of the crank pin s so that the feed occurs at the same part of the stroke for all settings of the pin s. The tool head is held down on its guides by tapered gibs 3 .. 6, which are inserted from opposite sides of the head. Similar tapered gibs 7, 8 prevent lateral movement of the head.