SU1653906A1 - Clamping device - Google Patents

Description

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(21) 4698994/08 (22) 06/01/89 (46) 06/07/1. Bul. №21

(71) Tambov Bearing Plant

(72) A.Ye. Soldatenko, S.S.Dolgov, E. V.Efremov and A.M. Uskov (53) 621.941.3 (088.8)

(56) USSR Author's Certificate N 1292933, cl. B 23 B 31/40, 1985

(54) CLAMPING DEVICE

(57) The invention relates to metalworking and can be used to fasten parts. The purpose of the invention is to improve the reliability of fastening by increasing the clamping forces. Mandrel 1 with stem 2 mounted on spindle 4 of power head On the surface of mandrel 1 intersecting longitudinal and transverse slots form petals placed opposite each other along circular arcs. In the cavity of mandrel 1 there is an elastically deformable bushing 13 Coaxially with mandrel 1 mounted pressure actuator made in the form of the cylinder body 17, in the form of a stepped bushing 22 with an abutment 20 installed therein; a pusher made in the form of a screw displacing the rod 2 is installed in the lid 18 of the housing 17, deforming the bushing 13 and 3 Acreple item 3 3 sludge

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The invention relates to the field of metalworking and can be used to secure parts.

The aim of the invention is to increase the security of the fastening by increasing the fastening forces.

Fig, 1 shows the clamping device, the section; figure 2 - section L - And figure 1; on fig.Z - mandrel.

The clamping device comprises a mandrel 1, a rod 2, and on the cylindrical surface of the mandrel 1, a detail 3 is installed such as a ring, for example, a stator of an electric motor of a washing machine. The mandrel 1 is fixed on the spindle 4 of the power head (not shown). The mandrel 1 has an annular shoulder 5, which acts as a thrust base, and petals 6, formed by intersecting longitudinal and transverse slots 7. Petals 6 are placed opposite each other along arcs of a cylindrical surface of the mandrel 1. designed to ensure installation of part 3 upon loading. In the cavity of the mandrel 1 is placed a rod 2, made in the form of a cylindrical part with a central stepped hole in which a fixing element is placed, fixed in the mandrel 1 with screws 9. A support 10 is screwed into a threaded hole inside the rod 2.

2 is made of an annular burg 11. Between the cylindrical surface of the rod 2 and the inner surface of the mandrel 1, an elastically deformable medium is presented in contact with the annular collar 11 of the rod 2 and the surface of the protrusion 12 of the mandrel 1, presented in the form of a sleeve 13 made of an elastic material, such as polyurethane. The pressure actuator is designed to clamp the part 3 on the mandrel 1 and is mounted coaxially with the spindle 4 and is designed in the form of a cylinder (not shown) with a plunger 14. On the latter, on the radial 15 and thrust 16 bearings, there is a housing 17. closed by covers 18 and 19. On the housing 17 mounted with the possibility of axial reciprocating movement of the stop 20, made in the form of a cylindrical part with an annular collar 21 intended to press the part

3k to the base ring collar 5 of the mandrel 1. The stop 2 () is located in the cylinder, made in the form of a stepped sleeve 22, which is mounted on the housing 17 and rests on the nut 23 with the lock nut 24. A ring 25 made of an elastic material is placed between the stop 20 and the sleeve 22 (poliuregana). Its width is selected with the possibility

contact with the annular steps of the stop 20 and the sleeve 22. Coaxially the support 10 into the cover 18 is screwed in a pusher, made in the form of an adjusting pin 26 with a spherical golopka, fixed with 1Naya 27. With it, the force of pressing the elastic sleeve 13 in the axial direction and is adjusted. consequently, its elastic deformation in the radial directions and the magnitude of the sponge bath of the petals 6 of the mandrel 1.

The clamping device operates as follows.

When the actuator plunger 14 is positioned in the right extreme (initial) position, the part 3 is fed by any known method to the position of its movement against the fastening zone (H. I mandrel 1). The vane cylinder is turned on. In this case, the plunger 14 is moved by the shaft and the end face of the collar 21 of the stop

0 20 moves part 3 onto mandrel 1 all the way into annular collar 5. In this case elastic ring 25 is compressed within elastic deformation, and part 3 is placed in a position strictly perpendicular to spindle axis 5 liters 4. Simultaneously screw 26 acts on support 10 of rod 2 and. moving it to the left, squeezes the sleeve 13 in the axial direction. Due to the elastic deformation of the latter in radial directions,

0 the bending of the petals 6 of the mandrel 1 within the elastic deformation and the clamping of the part 3. The electric motor of the power head is turned on. In this case, its spindle 4 rotates the mandrel 1 with the workpiece 3. After it

5, the power head motor is turned off, and the power cylinder is switched to reverse. The plunger 14 is moved to its original position. The machined part 3 is removed from the mandrel 1.

0 and moves to unload. Then the cycle repeats.

Claims (1)

Claiming device containing a mandrel with an annular collar on the outer cylindrical surface, a rod mounted in the central cavity of the mandrel filled with a working elastically deformable bottom, and a pressure actuator made in a cylinder pide with an installed 0 an emphasis with an annular collar on the end mounted for movement relative to a pusher fixed on the cylinder body, characterized in that. that, in order to increase the reliability of the fastening, on the cylindrical surface of the mandrel there are made intersecting longitudinal and transverse slots forming evenly arranged elastic petals directed towards each other, the stem being made with a central stepped hole in which the fixing element fixed to the device and z ment one Rig.Z