GB359434A - Improvements in presses, drilling machines and other automatic machines - Google Patents

Abstract

359,434. Drilling-machines; metalworking presses. GREENWOOD & BATLEY, Ltd., 16, Great George Street, London, and MACLAGAN, J. C. M., Grainge Villa, Wedgewood Drive, Roundhay, Leeds. July 17, 1930, No. 21715. [Classes 83 (iii) and 83 (iv).] In a machine having an automatic work-feeding device such as a drill or press, a number of workholders are moved radially and in succession into and out of working relationship with a central tool head. The invention applied to a press is shown in Figs. 1 and 2 where A indicates a work table supported on a body B which houses a centrally placed ram or die block C, adapted to work in conjunction with an adjustable press head D. Slidably mounted in radial grooves in the table A are guide blocks 2 ; a bolt passing through each block secures, on the upper face, the work-holder 4, and underneath the block, a link 5 which is attached to one arm 6 of a bell-crank lever fulcrumed on studs 7, fast to the table A, and whose other arm 8 carries a pin mounting a roller 9. The rollers 9 run in a cam groove 13 on a plate 10 which is rotated centrally about the die block by a worm and worm wheel; such rotation causes the work holders to reciprocate radially so that each is successively brought under the tool head for treatment, and then withdrawn to an outer position for emptying and recharging. A machine provided with three feeding members is shown, but more or less may be employed ; a double workholder may also be attached to each guide block, Fig. 4, in which case a cross lever 15 having two rollers 16, 16<1> is fastened to the underside of the blocks and the rollers arranged to engage cams 17, 18 on the plate 10, so that on rotation of the latter each of the work-holders on the feeding members is swung through 180‹ and brought, in turn, under the centre of the machine.