SU1110553A1 - Chuck for securing parts - Google Patents

Abstract

CARTRIDGE FOR FIXING DETAILS, made in the form of installed in the housing with the possibility of relative movement of two sleeves and an even number of flexible elements evenly circumferentially placed between them, characterized in that, in order to expand technological capabilities, flexible elements in the form of threads are connected with each other and mounted for movement relative to the sleeves. I followed the SD from FIG.

Description

The invention relates to mechanical engineering and can be used as a universal self-centering cartridge for securing parts of any shape and stiffness and end tools.

A cartridge for fastening parts or an end tool is known, provided with fixed and rotatable bushings with elastic elements 1 installed between them.

However, the well-known cartridge is characterized by the impossibility of transmitting large steeply w, their moments to small and thin-walled parts, since the clamping force from the deflection of each rod is transmitted in the arc section up to 120 °, therefore the specific pressures on the fixed part are relatively large, and the increase in the clamping force leads to See this for details.

Closest to the present invention is a cartridge for securing parts made in the form of installed in the housing with the possibility of relative movement of two sleeves and an even number of flexible elements between them evenly spaced around circumferential 2.

However, this cartridge is characterized by the impossibility of fixing non-circular parts, for example, of a rectangular shape, due to the different angle of bending of the fixed part with each rod, which leads to the need to have rods of different lengths, since it is necessary that the sleeve moving with longitudinal, moved evenly due to the different deflection of each rod.

The aim of the invention is the expansion of technological capabilities.

The goal is achieved by the fact that in the cartridge for fastening the parts made as installed in the housing with the possibility of relative movement of two sleeves and an even number of flexible elements evenly circumferentially placed between them are flexible elements in the form of threads connected to each other and installed movable relative to the sleeves.

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FIG. 1 shows the cartridge, a general view;

in FIG. 2-thread yarn on parts

360 ° rotation of the sleeve; in fig. 3 - view A

in fig. 2; in fig. 4 is a view B in FIG. 2

In the case 1 of the cartridge, the sleeve 2 is mounted in the axial direction, the sleeve 3 is turned. The sleeve 2 is locked by teeth 4 turning into the slots 5 of the housing 1. On the sleeve 2, there is a locking element 6 and a cover 7. Between the sleeves 2 and 3 there is spring 8. At the ends of the sleeves 2 and 3, holes 9 are formed evenly around the circumference, through which the thread 10 passes in a staggered order.

 The cartridge works as follows.

The fastener 11 is inserted into the pat- tern through the central holes in the ends of the sleeves 2 and 3 (Fig. 1). Pressing the locking element 6, turn the sleeve 3 for her

0 right face spy. Meanwhile, portions of the thread 10 begin to wind onto the part 11 (Fig. 2). since before contact and at the moment of contact of part 11, sections of thread 10 form a single-cavity hyperboloid, the fixed part 11 is precisely centered along the axis

5 rounds. The sleeve 2, overcoming the resistance of the spring 8, at the same time moves in the direction of the sleeve 3: A few turns of the sleeve 3 causes each section of the thread 10 several times (3 enough: 4 turns) to be wound on the part, firmly fastening it exactly along the axis patron.

The use of a flexible closed thread as a clamping element allows a significant increase in technological capabilities. It becomes possible to increase the transmitted torque by hard and thin-walled parts, this allows a sharp reduction in the specific pressure on the fixed part. It is also possible to fasten parts of any shape, for example, shaped 0 or rectangular, since the elongation of some and shortening of other sections of the thread occurs automatically, because the thread is closed and can freely move through the holes in the ends of the sleeves.

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Claims (2)

CARTRIDGE FOR ATTACHING PARTS, made in the form of two bushings installed in the housing with the possibility of relative movement and an even number of flexible elements placed between them, evenly spaced around the circle, characterized in that, in order to expand technological capabilities, the flexible elements in the form of threads are connected to each other another and installed with the possibility of movement relative to the bushings. 2 V 5 9 9 8 Figure 1