SU1696250A1 - Device for clamping of bearing bush - Google Patents

Abstract

The invention relates to a machine tool industry, namely to devices for fastening the slide bearing shells when machining their docking planes. The purpose of the invention is the expansion of technological capabilities by increasing the sizes of clamped liners. The insert 13 of the sliding bearing is installed in the semi-cylindrical socket 7. In the housing 1 there are two gland sections 3 with bevels. Roller 25 is placed between segments 3. In clamping segments fingers 4 are placed, which are rigidly connected at one end to sliders 5. Sliders 5 are installed perpendicular to fingers 4 with the possibility of reciprocating movement and are spring-loaded from the other end relative to the cone. When the actuator is moved, the pusher 6, which has bevels, acts on the bevelings of the segments 3, which, moving and turning, carry out the clamping of the insert of the sliding bearing. 2 Il. C / S

Description

The invention relates to a machine tool industry, namely to devices for fastening the slide bearing shells when machining their docking planes.

The purpose of the invention is the expansion of technological capabilities by increasing the sizes of clamped liners.

FIG. 1 shows the device, a general view; figure 2 - section a - a in figure 1.

The device includes a housing 1 with landing slots 2, two clamping segments 3, two fingers 4, two slide blocks 5 and a pusher 6.

The housing 1 has a semi-cylindrical socket 7 in which a landing slot 2 is installed. The landing socket 2 is fixed with two bolts 8 placed in the holes 9. In the housing 1 perpendicular to the fingers 4 there are two cylindrical sockets 10 for sliders 5 and in the plane of symmetry I - I hole 11, previously intended to accommodate the ejector 12.

The landing slot 2 is designed to install the bearing 13 bearing during processing. It has an arc groove 14 of rectangular cross section, in which two arc stops 15 and 16 are installed, designed to support the insert 13 of the sliding bearing. The role of additional stops for the bearing insert 13 is also performed by the slide blocks 5, which have longitudinal flats on top 17. The hold-down segments 3 are intended for direct

clamping the liner 13 in the seating slot 2. They have an outer cylindrical surface 18, the radius of which is greater than the radius of the inner surface of the liner 13. This allows the segments 3 to come into contact with the inner surface of the liner 13 with extreme edges, which ensures its reliable mounting in the seating slot 2 and areas adjacent to the joints, which is very important when processing them. On the side opposite to the cylindrical surfaces 18, the clamping segments 3 have bevels designed to interact with the pusher 6. The segments 3 have a groove 19c with a cylindrical surface and transverse bores 20 in which interchangeable sleeves 21 are installed. In the latter, 22 fingers are installed with gaps 4. Between the segments 3 there is a gap 23, and in the transverse cylindrical grooves 24 a roller 25 is installed, which provides a simultaneous stop of the segments 3 into the inner surface of the liner 13 with extreme generators.

The fingers 4 are connected to the lower ends by a thread with one end of the sliders, and the latter are installed with the possibility of reciprocating movement in the openings 9 of the housing 1 and are spring-loaded from the other end by springs 26. The springs 26 are designed to return the segments 3 to the initial position after processing liner 13 in order to form a gap between them.

The stroke of the sliders 5 in the cylindrical recesses 10 is limited by grooves made on their lateral surfaces and pins (not shown).

The pusher 6 is designed to interact with the segments 3. It is made in the form of a rectangular prism, at the end of which there are bevels located at an angle equal to the angle between the bevels of the segments 3. The ejector 12 is designed to push the treated liner 13 within the formed gap with the aim of ensuring its further transfer to unloading.

To install the liner 13 in the landing slot 2 with a certain force, an allowance equalizer is provided before its clamping. It is made in the form of a slider 27, on which the fingers 29 of a cross-section are mounted with the fingers 28.

The clamping device operates as follows.

At the beginning of the machine operation cycle, the loading device feeds the insert 13 into the seat 2. The power leveler ram is turned on. Last, I act by stops 29 on the joints, installs the insert 13 in the landing nest 2 with an effort. The power cylinder of the clamping device is turned on, while its rod moves the pusher 6, which with its bevels acts on the bevels of the segments 3. Segments 3, moving and turning relative to the roller 25, act on the inner surface of the liner 13, at the same time mounting it in the seat 2 in four areas by extreme generators - in the middle part of the insert 13 and in areas adjacent to

its joints. Segments 3 through the fingers 4 move the slide blocks 5 in the cylindrical slots 10 of the housing 1, compressing the spring 26. The stock leveler power cylinder switches to reverse, retraction

lugs 29 from the joints of the liner 13. The liner joints are machined with vertical broaches. After they have been machined, the clamp cylinder is switched to reverse and the pusher 6 departs

from the segments 3. Under the action of the expanding springs 26, through the slide blocks 5 and the fingers 4, the segments 3 return to their original position, freeing the treated insert 13. The latter is pushed out 12 of

landing nest 2 and in any known manner is moved to unloading. Then the cycle is repeated.

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Claims (1)

Invention Formula A device for clamping the bearing shell, comprising a housing with a mounting seat and a pusher adapted to cooperate with pressure segments set with a gap in the fingers, characterized in that. that, with the aim of expanding technological capabilities by increasing the sizes of clamped liners placed in the pressure segments of the fingers are rigidly connected to one end of the sliders inserted into the device, mounted in the housing perpendicular to the fingers, with the possibility of reciprocating movement and spring-loaded relative to the body from the other end. I 5 24 FIG. 1 27 L Vtf v Have U 2D 4 6 21 5 I / / / 29 / FIG. 2