Universal Shaper

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Extract from Planing and Milling Vol II by Franklyn D Jones 1915

Cochrane-Bly Universal Shaper. - Diemakers and toolmakers are often obliged to use a number of machines for making a die of jig, especially if the shape is at all complicated or irregular. This means that the work must be reset in each machine, which not only requires extra time but often makes it difficult to secure accuracy between the different surfaces, thereby increasing, in many instances, the amount of hand work necessary for fitting and finishing.

The figure illustrated in Fig.14 (above) has been designed to perform quite a variety of operations at one setting of the work; therefore it is especially adapted to the making of dies, jigs, or to general tool-room work. This machine is known as a universal shaper, but in reality, it is a shaper, slotter, milling and drilling machine combined. It is equiped with a shaper ram, a milling and drilling spindle, and suitable speed and feed-changing mechanisms. The milling spindle and shaper ram have universal adjustments so that tools can be presented to the work at any desired angle. Fig.15 (below) shows the shaper ram set in a horizontal position.

The machine is driven from a constant speed clutch pulley at the rear, which transmits the power through a double cone of spur gears to the main head. The latter carries bevel gears for driving both the shaper ram and milling spindles. The cones of spur gears provide means for varying the speeds, and the speed changes are effected by means of a lever on the right-hand side of the column. The end of this lever swings around a graduated quadrant which shows the number of ram strokes per minute for any one of the five positions. The shaper ram has a quick return and the strokes can be adjusted from 0 to 6 inches. The ram is equipped with a mechanism which provides a positive relief for the tool on the upward or return stroke. The milling spindle revolves either to the right or left. It has a sliding movement of three and a half inches for drilling and boring, which is controlled by a handwheel operating through worm gearing. A micrometer screw-stop, reading to thousandths of an inch, is provided to facilitate accurate adjustments. The main head, including the shaper ram and milling spindle, can be revolved about a horizontal axis (after loosening the clamping bolts) by turning a small crank which is located at the upper end of the graduated quadrant previously referred to. The shaper and milling heads each have an independant adjustment about an axis at right angles to the main head, which makes it possible to locate them at any angle.

Power feed is provided for the longitudinal and transverse movements of the table. Either a continuous or intermittent feed is obtained from a feed box at the rear. When the milling spindle is being used, the feed is continuous, whereas an intermittent feed, which takes place on the return stroke, is required for the shaper ram. For a continuous feed, the drive is through spur gears, and for an intermittent feed, a crank and ratchet mechanism is brought into action. The circular milling and sliotting attachment, seen on the main table in Fig.14 (1st picture) is equipped with power feed and a dividing mechanism.