SU1407697A1 - Two-jaw swivel chuck - Google Patents

Abstract

The invention relates to the field of machine tools, and more particularly to devices for securing blanks on a machine spindle during multilateral processing. The aim of the invention is to simplify the design and increase reliability. The rotation mechanism contains a polyhedron 7 with rounded apical and radius notches 25 on the facets, as well as a rod 13 with a fixed bevel 15 and an emphasis 16 and 7 SV g7 18 ts th 21 22 13 fie. An additional rotation with the top 17 and the inner face 18. A groove 19 is made on the bevel 15, one side 20 of which lies on a straight line drawn through the top 17 parallel to the axis of the rod 13, and side 22 is made at such an angle that the adjacent angle oi does not exceed half of the central angle U of the polyhedron 7. The distance from vertices 21 to end 18 exceeds the length of the side of the many hedron 7. In the initial position the bevel 15 fixes the position of the polyhedron 7 on one of its sides. When the rod 13 moves to the right, its stop 16 by the end 18 turns the polyhedron 7 by a certain angle counterclockwise. Then the rod moves to the left and acts on the top 23 of the polyhedron 7, first with a bevel 15, and then with side 22 it continues to turn in the same direction until the polyhedron 7 is fixed. 5 il. C B (L vl Od 12

Description

The invention relates to a machine tool industry, and more specifically to devices for securing blanks to

machine spindle with multilateral

processing.

The aim of the invention is to simplify the design and ensure reliable operation.

ti.

Fig, 1 shows the cartridge, axial section; figure 2 - the same, the view from the working end; on f.г.З - section А-А on ig, 1 (fixed state); in FIG. 4, the same, with the stroke going to the right; Fig. 5 is the same; when the rod moves to the left, the Two-cam rotary chuck will enclose the housing 1 with the inner core 2 for stirring, the workpiece and the transverse boring 3, in which the quill 4c is located with the slammed cam 5 and the swivel pin b with the polyhedron 7 and The adjusting cam 8, In the case 1 of the cartridge parallel to the axis of rotation of the latter, are mounted a hydraulic cylinder 9, the rod 10 of which has a wedge surface 11 entering the T-shaped groove of the quill 4, and the piston 9, as well as the hydraulic cylinder 12 with the rod 13 and the nopm Stj 14 The rod 13 has a locking ck Wasp 15 and stop 16 additional rotation with the top 17 and the inner end 18.

A prismatic groove 19 is made on the surface of the locking bevel 15, one side 20 of which (closest to the stop 16 of the additional rotation) coincides with the straight line drawn through the top 17 of the latter parallel to the axis of the rod 13, and the top 21 of the groove 19 is separated from the inner end 18 of the stop 16 an additional rotation of at least the side of the polyhedron 7. The angle ot, adjacent to the angle formed by the sides 20 and 22 of the groove 19 does not exceed the central angle of the polyhedron 7,

The tops 23 of the polyhedron 7 are rounded, and its sides 24 are provided with radius notches 25,

The cartridge works as follows. The workpiece is based on the adjusting cam 8, after which the rod 10 of the hydraulic cylinder 9 begins to move and, in its operation with its wedge surface 11 on the quill 4, holds the last pressing force.

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between the adjusting cam 8 and the clamping cam 5,

In this case, the polyhedron 7 of the trunnion 6 is fixed against rotation by the rod 13, which, with its fixing bevel 15, came into contact with one of the sides 24 of the polyhedron 7.

After finishing the processing of one of the sides of the workpiece, it is necessary to rotate the journal 6 at a predetermined angle. When pressure is applied to the rod end of the cylinder 12, the rod 13 receives movement and the locking bevel 15 comes out of contact from the side 24 of the polyhedron 7, the additional rotation stop 16 comes into contact with the adjacent side of the polyhedron 7, turning the latter anti-clockwise.

The pin .6 is turned together with the polyhedron 7 until the rod 13 reaches the extreme position. Then the pressure is fed into the rodless cavity of the hydraulic cylinder 12 and the rod 13 receives a reverse movement and, acting on the top 23 of the polyhedron 7, first by the surface of the fixing bevel 15, and then by the side 22 of the groove 19 continues to turn the polyhedron 7 in the same direction until the locking bevel 15 will not come into contact from the side of the polyhedron 7, thereby ensuring its fixation. So the turning cycle is over,

Claims (1)

Invention Formula A two-cam turning cartridge, in the case of which the clamping cams and the mechanism of their rotation are located, was made in the form of a pin with a polyhedron and an interlock with a locking bevel and an additional rotation with the top and the inner end, which in order to simplify the design and To increase reliability, a groove of a prismatic shape is made on the surface of the fixing bevel, and one side of this slot, closest to the stop of the additional turn, is coincident with the plane, held It is located through the top of the stop of the additional turn and parallel to the axis of the rod, and the top of this groove is located from the inner end of the pack (an additional turn at a distance that exceeds the length of the side of the polyhedron, and the angle adjacent to the top of the polyhedron is made along the side of the groove - to the radius, and the faces of the polyhedron - from the fault of the angle of the polyhedron, with this radius grooves. 3 11 9 W / I / 20 19 25 fie.g F1 / HL x (- / 4 25 2 5