SU478689A2 - Tool post - Google Patents

Description

cutter-cutter 6. On top, the cutter is locked by a strap 7 connected to the corn.

Under the action of the spring 8, the bar 7 has a spring-loaded stop 9, which is oriented in the angular position relative to it with the pin 10, pressed into the bar 7, and an elongated groove 11 in the stop 9. The groove 11 limits the extreme positions of the stop 9 in the absence of a tool. At the end of the spring-loaded unor 9, a pin 12 is pressed in, interacting with the radius surface of the groove 13, made on the cutter 6.

On the protrusion 3 there are vertical bore holes 14 in which clamping sliders 15 are movably mounted in the axial direction. On the sliders 15 in the upper part there are clamping bevels 16 interacting with on the inclined plane 17 of the cutter 6, made along its entire length. In the middle part of the slider 15, a transverse groove 18 is provided with which the clamping eccentric 19 interacts, which is integral with the control rod 20.

On the control rod 20, the end cam 21 is movably mounted in the Zglov position, and the ring 22 is rigidly secured. and an emphasis 25 is pressed in, which ring 22 can act. On the end plane of ring 22, a hole 26 is made with a 90 ° cone angle and a notch is profiled. On the end surface of an annular protrusion 4 a hole 28 is made with the same fragrance of the cone and pressed The stops 29 and 30 define the swing angle of the face cam 21. On the elongated part of the face cam 21, an inclined bevel 31 is formed, which passes into the mud plane 32, which is the reference plane for the stop screw 33 of the cutter b in its working position. The machining of the part is carried out by the cutter 6, for which it is installed in the groove 5 on the protrusion 4 so that its groove 13 faces upwards. Further, by moving along the axis, the cutter 6 manually slides into the holder's nest up to the stop into the cantilever part of the tift 12, pre-pivot the stop abutment 9.

The key for the square of the control rod 20 rotates it clockwise through a certain angle (no more than 90 °, Vi + Yz), as a result of which the cutting tool is sent to the working position. And its final clamp. By turning the control rod 20, the following movements occur. Ring 22, which is rigidly connected to the controller

rod 20, through hole 26 (fit. 8) is rigidly coupled through retainer 24 with face cam 21. Therefore, when the control rod 20 is rotated, ring 22 and end 5 cam 21 rotate as one piece. The end cam, with its bevel 31, presses the stop 33 of the cutter 6, and the latter, having overcome the force of the spring 8, moves forward, and finally, when its stop screw 33 turns out to be aa of the supporting plane 32, the cutter moves off.

The joint movement of the ring 22 and the end cam 21 occurs on a certain path / 1 (angle 7i) at the end of which the end cam touches the stop 22 and stops. At this point, the latch 24 is released from the hole 26 and enters the hole 28, thereby disengaging the end cam 21 with the ring 22, and it also comes with the control rod 20. The groove 27 relative to the stop 25 is shifted by a certain amount b. In this position of the mechanism, the cutter is fully extended forward and the force of the spring 8 is pressed through the stop screw 33 to the supporting plane 32, but is not yet clamped by the half zun 15. With further rotation of the control rod 20 on some path 4 (angle Y2, see Fig. 8 ) the lowering slide 15 with its bevel 16 presses the cutter. The path / 2, depending on the inaccuracy of manufacturing parts and wear, may fluctuate, therefore the length of the groove 27 and the stroke of the eccentric 19 are provided with a margin.

When sending the cutter with the key forward to the working position, even if

5, the moment against the cutter is handled (a piece of work, a movable cutter in a closed groove cuts through the allowance provided for it, and the cutter does not break. The stop screw 33 contacts with the stop

0 by plane 32 is always at the same point, so the cam 21 always occupies a constant final position. This ensures maximum accuracy of the cutter on the support.

Subject invention

Tool post on the author. St. 338309, characterized in that, in order to reduce

When the cutters are installed and replaced, it is equipped with a slider located on the perpendicular cutter and an eccentric acting on the fixing-release of the cutter, and the adjusting rotary cam is made with a hole and interacts with the eccentric axis through a floating latch. 1 20 23 21 32 J / JJ / Z J 5 W 15 A-A Srig 1 /.

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