FEEDSCREW TRAVERSE FOR THE WORDEN

摘要

This article describes the construction of a positive lateral feed for the work table of the Worden tool and cutter grinder. A general view of the machine is given as Photo 1, which also shows the dust control modification described in Issue 104. It is quite possible that, with a little ingenuity, the concept may be applied to other equipment. When considering how best to achieve this, I came upon a current adjusting screw and nut removed from a redundant arc welder. This screw is 10mm dia. and some 6in. long, of which 4(1/2)in. has a two start 10 x 1.5mm thread. There is a 7mm dia. spigot on the end and the remaining length is threaded M10. This was ideal, as the twin thread allowed a travel of 3mm per one turn of the screw. The 19mm hole in the right hand table side plate was utilised to accommodate a bearing boss for the feed screw, and the spacer bar at the front of the plates was used as a guide bar for the two sliding components and the fixed one. The screw is operated by a knurled hand wheel. This assembly is shown fitted up in Photo 2.