SU1247176A1 - Clamping device actuator - Google Patents

Description

one

The invention relates to a machine tool industry, in particular, to drives of clamping devices disposed on a spindle of a cutting machine.

The purpose of the invention is to increase the machining accuracy by eliminating the influence of the beats of parts connected to the machine tool.

FIG. 1 shows a clamping device drive, an axial section; in fig. 2 is a view along arrow A in FIG. one.

The drive of the clamping device comprises a housing 1, which with the help of the lugs 2, guides 3, sector 4 and bolts 5 is attached movably in the axial direction to the spindle head of the machine 6. On the housing 1

1247176

Drive clamping device works as follows.

When moving the rod 8 of the power cylinder 7 to the left, the tractor ha 12, connected to the rod 8 through the thrust bearing 10, moves to the left, ensuring the operation of the clamping device, and the housing 1 to the right along the guides 3, selecting axial clearances in the beat compensator. This axial force from the housing 1 is transferred to the thrust bearing 10, the clamp 20, the ring 22, the ring 17, the separator with the balls 18, the ring 16, the nut 14 and closes on the spindle 13, without loading the spindle bearings with axial forces. After moving the cylinder rod to the right, the force from body 1 is transmitted to the spindle

installed the power cylinder 7, having 13 through the bearing 21, the holder 23, the ring 16,

A hollow rod 8 with a threaded flange, to which, using a threaded bushing 9, thrust bearings 10 and a nut 11, is attached a floor of a ha 12, connected to a clamping device.

At the rear end of the spindle 13 of the machine, there is a nut 14 and a cap nut 15 with spherical surfaces, between which there is a beat compensator, consisting of rings 16 and 17 with spherical surfaces and a separator with balls 18, mounted on an elastic gasket 19, ensuring centering and radial movement of the separator with balls 18 relative to the nut 14.

Thrust bearings 20 and 21 are mounted inside the housing 1 and interacting with the sleeves 22 and 23, which are rigidly interconnected with screws 24. To stop from turning the sleeves 22 and 23 relative to the nut 14, the yoke 23 is equipped with a pin 25, the protruding part of which

ball cage 18, ring 17 and nuts 15 and 14.

When the machine spindle 13 rotates together with nuts 14 and 15, the elements 23-25, 22 and 16, -18 rotate on the thrust bearings 20 and 21, and the beat compensator works as follows: the ring 16 with a spherical surface, pressed by axial force, self-aligns on the spherical the surface of the nut 14, preventing the spreading of the end beats of the rotating elements 14, 23, 22 and 17 on the housing 1 with the power cylinder 7. The radial beats of the spindle 13 seating surfaces, nuts 14 and 15 are compensated for by radial movement of the ring 16 relative to ltsa 17 on the balls 18 of the separator in the radial clearances between the nuts 14 and 15 and elements 22, 17, 16 and 23.

Thus, the beat compensator prevents the axial (face) and radial beats from spreading to the housing 1.

put in the groove of the nut 14. Elements 16-18 5 with the power cylinder 7, reduces the vibration-compensator of the beat, the relative weight of parts and, respectively, the nuts 14 and 15 and the sleeves 22 and 23 with axial dynamic loads on the bearings near and radial gaps, which interfere with the drive and spindle of the machine, increasing their beam spreading on the body by 1.5–1.7 times the strength of the body. In addition, a smaller cylinder. The bearings 20 and 21 and the vibration shroud leads to an increase and the 23 is fixed in the housing with a nut 26. The accuracy of the parts machined on the machine

247176

Drive clamping device works as follows.

When moving the rod 8 of the power cylinder 7 to the left, the tractor ha 12, connected to the rod 8 through the thrust bearing 10, moves to the left, ensuring the operation of the clamping device, and the housing 1 to the right along the guides 3, selecting axial clearances in the beat compensator. This axial force from the housing 1 is transferred to the thrust bearing 10, the clamp 20, the ring 22, the ring 17, the separator with the balls 18, the ring 16, the nut 14 and closes on the spindle 13, without loading the spindle bearings with axial forces. After moving the cylinder rod to the right, the force from body 1 is transmitted to the spindle

 13 through the bearing 21, the holder 23, the ring 16,

13 through the bearing 21, the holder 23, the ring 16,

ball cage 18, ring 17 and nuts 15 and 14.

When the machine spindle 13 rotates together with nuts 14 and 15, the elements 23-25, 22 and 16, -18 rotate on the thrust bearings 20 and 21, and the beat compensator works as follows: the ring 16 with a spherical surface, pressed by axial force, self-aligns on the spherical the surface of the nut 14, preventing the spreading of the end beats of the rotating elements 14, 23, 22 and 17 on the housing 1 with the power cylinder 7. The compensation of the radial beats of the mounting surfaces of the spindle 13, nuts 14 and 15 occurs due to the radial movement of the ring 16 relative to the ring and 17 to 18 of the separator beads of the radial clearances between the nuts 14 and 15 and elements 22, 17, 16 and 23.

Thus, the beat compensator prevents the axial (face) and radial beats from spreading to the housing 1.

with a power cylinder 7, reduces the vibrating mass of parts and, accordingly, the dynamic loads on the bearings of the drive and the machine spindle, increasing their durability by 1.5-1.7 times. In addition, the reduction of vibrations leads to an increase in the accuracy of parts machined on the machine.

Compiled by A. Gavryushin

Editor A. OgarTehred I. VeresKorrektor S. Cherni

Order 4056/14 Circulation 1001Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

CLAMP DEVICE DRIVE to a lathe, comprising a power cylinder and nuts mounted on the housing, one of which is connected to the spindle and the other to the drive rod, characterized in that, in order to increase the accuracy of processing by eliminating the influence of beats of elements connected to the spindle of the machine , it is equipped with a beat compensator, made in the form of a separator with balls, mounted on one of the nuts · by means of an elastic gasket, and two rings with spherical surfaces designed to interact with spherical their surfaces formed on each nut and said ball. FIG. 1