This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...cylinder are on the large diameters A and R, Fig. 107. In the event of any wear taking place between these surfaces at either end and the bearings formed in the main frame of the machine, the alinement of spindles and tool slide need not be affected, as both will simply move together. Fig. 107.--Gridley Multiple ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...cylinder are on the large diameters A and R, Fig. 107. In the event of any wear taking place between these surfaces at either end and the bearings formed in the main frame of the machine, the alinement of spindles and tool slide need not be affected, as both will simply move together. Fig. 107.--Gridley Multiple-Spindle Automatic Turret Lathe with Spindles and Tool Slides Removed In addition to the features just described, Figs. 105 and 107 show clearly the method of preventing the tool slide from rotating, the arrangement consisting of an arm attached to the tool slide and machined at the outer end to fit a longitudinal guide bar located as represented at the top of the machine. The spindles have the usual collets and stock-feed device, and are driven by the pulley shown at the right-hand end of the machine in Fig. 105. This pulley is keyed to one end of a driving shaft running through the center of the spindle-carrying cylinder as in Fig. 108, and carrying on its other end a gear meshing with a gear keyed on each of the spindles at the rear end of the bearing. The spindles are run constantly in one direction without stopping or reversing for the purpose of threading, that operation being taken care of by the threading mechanism to be referred to later. OPERATION OF THE TOOL SLIDE The cam shaft C, Figs. 107 and 109, carries the cams for operating the tool slide and the forming and cutting-off tools; the cams for operating the chuck and feeding the stock; and the mechanism for revolving the cylinder. It is driven at two speeds, one of which is comparatively slow for use during the time the tools are cutting, the other a high speed, for returning the tool slide and revolving the spindle cylinder. During the slow movement (while the tools are cutting) it is d...
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Add this copy of Automatic Screw Machines and Their Tools to cart. $15.00, good condition, Sold by David's Books rated 2.0 out of 5 stars, ships from ypsilanti, MI, UNITED STATES, published 1909 by McGraw Hill.
