SU901037A1 - Device for mounting article - Google Patents

Description

(54) DEVICE DEVICE DAY DEVICE

The invention relates to a machine tool and can be used in grooving, circular grinding inside grinding and polishing to vodka machines when processing parts like bearing rings on supporting shoes. Devices are known for mounting an article on grinding machines for machining parts such as bearing rings on support shoes in a magnetic cartridge whose faceplate is stationary relative to the cartridge and has a shortened reach of the working part l. The axial movement of the faceplate as its working part is worn on these machines is carried out by moving the headstock spindle of the product within small limits with its subsequent clamping. The use of such devices complicates the design of the machine itself, reduces its strength, the working part of the faceplate is several millimeters, after wear of which the faceplate is ejected. It is also known a device for mounting a product, the cartridge of which contains a wear-resistant sleeve connected to a plate with tension. In this case, the sleeve is located on one side of the faceplate, and the faceplate itself is console-connected with the core of the cartridge. The product spindle, support shoes and loading device are rigidly made without the possibility of their axial movement. With full wear of the working part of the sleeve, the chuck face plate is removed, and a new one is put in its place. The axial movement of the faceplate as the working part of the sleeve is worn out is carried out by installing a compensator between the cartridge core and the faceplate. In addition, for each machine it is necessary to have a set of compensators which differ from each other in terms of tons by tenths of a millimeter)

To install a compensator between the core of the cartridge and the faceplate, it is necessary to remove the boot device, the support unit, the faceplate itself, then put them in place again, perform adjustments, and only after that can the parts be further processed on the machine. All this requires a considerable time during which the machine is idle.

The purpose of the invention is to simplify adjustment work when the working end of the sleeve is worn and the best use is.

This goal is achieved by the fact that the device is equipped with a mechanism for moving the sleeve, made in the form of a screw pair, and a collet in which the sleeve is attached.

FIG. 1 shows a device with fastening the faceplate to the core with screws, a common screw ;;} in FIG. 2 is the same, with the fastening of the faceplate to the core of the thread-1 connection in FIG. 3 - the same, with fastening of the collet sleeve.

The device includes a cartridge case 1 fixedly mounted on the workpiece headstock 2, a fixed electric coil 3, a crutch 4 made of a non-magnetic material, support shoes 5 simultaneously performing the role of a magnetic core, a wear-resistant sleeve 7 connected to it with a tension wear sleeve 7, the core 8 a cartridge fixed on the shaft of the spindle of the product screw 9. The washer 6 can be made in the form of a flange and fixed with the core 8 screws (Fig. 1) or made in the form of a glass and connected with the core B of the thread (Fig. 2), It can also be made in the form of a collet installed in the core (Fig. 3). The screw 10 (fig. I and 2) in the initial position is screwed into the core 8 to the end and on the side of the sleeve 7 has a hexagonal key hole. T ha (Fig, C) passes through the hollow shaft of the spindle product and is connected to the collet thread. One end of the wear-resistant sleeve 7 is located inside the core 8, and the other protrudes from the faceplate 6 on the side of the support shoes 5 so that the part to be machined takes a target position relative to the support shoes 5.

010374

The device works as follows.

When turning on the rotation of the workhead spindle, the core 8, the flange 5 ba 6, the sleeve 7 and the screw 10 also rotate as one piece. Simultaneously with the rotation being turned on, the power supply to the coil 3 is also supplied. At the same time, the magnetic flux in the circuit closes: coil 3 - body 1 - support shoes 5 - workpiece - sleeve 7 face plate 6 (collet) - core 8 katuick 3. We also process the part rotates due to the friction forces between its end and the end of the sleeve 8, arising from the forces of magnetic attraction, and reliably pressed against the shoes 5 due to their eccentric. 2Q located The presence of eccentricity between the centers of rotation of the sleeve 7 and JET leads to wear of the working end of the sleeve 7, which makes it necessary to periodically move it in the axial direction towards the supporting shoes 5 by the amount of allowable wear, which is carried out by the screw 10, which with its end shoulder acts JQ on the end of the sleeve 7 and vyressovyvaeva from the faceplate 6 to the desired value. The sleeve 7 can be moved axially until it is completely worn, after which the faceplate 6 is removed, the remainder of the sleeve 7 is pressed out, a new sleeve is pressed into its place and the faceplate 6 is again installed in place with the sleeve 7 on the core 8. In the case of a collet instead of faceplate (Fig. 3) the release and clamping of the sleeve is carried out.

The device allows the use of elongated sleeves. A screw for axial displacement of the sleeve reduces the time required for the machine to be repositioned as the working part of the sleeve is worn.

Claims (2)

1. A device for mounting an article, comprising a cartridge with a faceplate, support shoes and a wear resistant sleeve, characterized in that, in order to simplify the attack and better utilize the E) tulle, it is equipped with a sleeve movement mechanism 5 in the form of a screw pair. 2. The device according to claim 1, characterized in that it is provided with a collet in which the sleeve is fixed. Sources of information taken into account during the examination 76 1. AVP-3 model groove trailer. Manual . Leningrad Machine-Tool Plant them. Ilyich, 1968. 2. Machine model VDE 25 RO. Operating Manual Czech Motorcycle Plants (CMW). Czechoslovakia, 1965. f .. AND / C.