SU61405A1 - Cam milling machine - Google Patents

Description

The machine is designed to produce all kinds of cams of various profiles, both by milling and grinding. The shape of the curved profile can be obtained either by rotating the workpiece around its geometric axis with simultaneous displacement of this axis relative to the fixed axis of the tool, or only by rotating the workpiece and displacing the tool axis relative to the fixed geometric axis of the workpiece.

Machines of this kind, using a uniformly rotating table with a workpiece and a mechanism with a slide for the relative movement of the axes of the workpiece and the tool (cutter), are already known.

The proposed machine is characterized in that it has a linkage with a toothed rack coupled to a gear mounted on a shaft which carries the table with the workpiece. Thanks to such a device, under the action of the moving backstage, when the table skids are fixed, the shoulder carrying the milling cutter is supported, and with the shoulder fixed, the movement of the slide with the table carrying the workpiece is achieved.

FIG. I shows a diagram of the machine in vertical projection; in fig. 2 is a plan view of the rocker mechanism of the machine.

The workpiece is placed on the table /, mounted on the shaft 2, which rotates in the slide 3, which can move together with the shaft 2 in the direction of the arrows.

The shaft 2 is rotated by the electric motor 4 mounted on the slide 3 through a gearbox consisting of a gear drive z, Za and a worm gear z. A gear z sits on shaft 2, engaging with rack 5 of link 6, in copier ruler 7, with which pin 8 of rack 9 rests. Rail 9 interlocks with gear z, shaft 10 of which carries a shoulder at its end. Shoulder this is rigidly connected with the electric motor 12, which, via the belt drive 13, drives the working tool (milling cutter) 14 located at the other end of the shoulder 11.

For machining the workpiece fixed on the table 1, the milling cutter 14 moves the arm 11 in the guide 15 at the end of the shaft 10 to the surface of the workpiece.

If the rail 5 is fixed with its finger 8 motionless, as the shaft 2 rotates from the electric motor 4, the table rotates / and the curtain wheel z moves together with the teeth of the rail 5. At the same time, the copier-ruler 7 slides on the fixed finger 8 that will cause movement of the slide 3 with the table 1, so that the workpiece will simultaneously rotate around its axis and move in the direction of the arrows L.

If you fix the slide 3 of the table 1, releasing the rail 9, then when the table 1 rotates with the workpiece, the moving link 6 will produce a copier-ruler 7 to move the finger 8 and the rail 9. In turn, the rail 9 will rotate gear 5, and with it shaft 10 shoulder 11 carrying the milling cutter 14.

All machine control is done by the spreading disc.

Subject invention

A cam milling machine using a uniformly rotating table with a workpiece and a slide mechanism for relative movement of the axes of the workpiece and a milling cutter, characterized in that the slide 6 is equipped with a toothed rack coupled to a table z / sitting on the shaft 2 to effect when moving the slide 3 with the table (turning the cutter 14) // or, if the shoulder P is fixed, move the slide bar with its table /.

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