SU70100A1 - Adaptation to horizontal milling machine for milling blades directly on the turbine disk - Google Patents

Description

The present invention relates to milling machines for machining spatially complex surfaces, such as blades of solid turbine discs, as a result of the addition of two mutually perpendicular movements.

In the proposed device, in order to give the blade a helical form, by providing the mill with an additional movement in the direction perpendicular to the axis of the blade, the cross-support is fixed on the machine swivel to enable it to communicate to the support of the swinging movements.

The drawing shows a spatial structural diagram of the machine.

On the table 14 of the fixed frame A the workpiece 11 is fixed.

Cross Caliper The machine carries a finger mill 10 and has three movements. The upper part of the supor can move relative to the middle in the xx direction, the middle part moves relative to the lower in the yy direction, and the lower part is connected to the base L by means of a capp, which allows the supor to rotate at an angle around the zz axis.

Thus, the milling cutter /, in addition to rotating around its own axis and moving the feed along its axis downward, participates in a complex movement along the axes XX VI VI - rotary movement about the zz axis.

In order to accomplish the above complex movement of the milling cutter, as a result of which the blade of the desired profile is obtained, three jaws, 2, 3, sitting on one roller reinforced in the bracket 15 of the base of the cross support, serve. The cam 1, rotating, acts on the roller 5, fixed on the same axis with the roller 4 on the slide 12. The roller 4 transmits its translational motion to the brace 13 of the upper part B of the suporta, forcing it to move along the xx axis, from left to right. Not shown in the drawing, the spring tends to move the upper part B in the opposite direction and constantly presses the roller 5 to the cam /.

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