CN104564944A - Self-lubricating spherical plain bearing bush sticking device - Google Patents

Abstract

A self-lubricating joint bearing liner bonding device, including a support frame, an end cover, screws, a liner and a joint bearing outer ring blank, the support frame is a cylindrical or cuboid shell structure with one end sealed, and a Guide groove, install the end cover with screws at the open end; insert a sliding sleeve with a slot in the guide groove, insert a loading screw at the sealing end of the support frame; set a positioning hole on the inner surface of the end cover, and insert an expansion core in the positioning hole Shaft, the expansion mandrel is composed of a mandrel and an expansion sleeve. The front end of the expansion sleeve is fixedly connected to the washer B. The washer B is connected to the spring. The front end of the spring is connected to another washer A. The small tapered end of the mandrel passes through the washer B, the spring, and the washer A. It can be inserted into the slot of the sliding sleeve in the guide groove; the expansion ring is sleeved in the middle of the expansion sleeve, and the liner and the outer ring blank of the joint bearing are sequentially sleeved outside the expansion ring. The invention has the advantages of uniform pad bonding, consistency in all directions, good bonding effect, and the like.

Description

A self-lubricating joint bearing liner bonding device

technical field

The invention relates to the field of self-lubricating joint bearing manufacturing, in particular to a bonding device for a liner of a self-lubricating joint bearing and an inner spherical surface of an outer ring.

Background technique

At present, there is a gap in my country's aviation precision self-lubricating joint bearing technology, and such products mainly rely on imports. At present, there are many kinds of self-lubricating layers of self-lubricating spherical plain bearings, and fabric self-lubricating layers are relatively widely used. Fabric type self-lubricating joint bearing is a special form of joint bearing that does not need to be supplemented with lubricant. Because of its low friction coefficient, excellent anti-wear performance, strong bearing capacity, and maintenance-free, it is widely used in transportation, construction machinery, etc. , national defense and other fields. The fabric type self-lubricating spherical plain bearing is mainly composed of three parts: bearing inner ring, bearing outer ring and liner. The liner is bonded to the inner spherical surface of the bearing outer ring and forms a spherical pair with the outer spherical surface of the bearing inner ring. When working, the liner is in friction A transfer film with low shear strength is formed between the pairs to play a self-lubricating role.

The bonding and curing process of the self-lubricating liner of the self-lubricating spherical plain bearing is one of the key technologies of bearing manufacturing. The process is: apply a certain adhesive, paste the impregnated and cured liner to the inner spherical surface of the outer ring, The pad is kept under a certain pressure by the pasting device, and then placed in a high temperature environment, and the curing process is realized through the control of time and temperature. In the bonding and curing process, in addition to the selection of adhesives and the control of process parameters such as temperature, time, and force in the bonding process, the method and device for realizing the bonding action are the basic technical conditions for the implementation of the bonding and curing process. , the effectiveness and reliability of the bonding action realization method and device directly affect the bonding and curing quality of the bonding pad, thereby affecting the performance of the self-lubricating spherical plain bearing. Although there are many technical studies on adhesives and curing process parameters, there are few researches on equipment technology for bonding self-lubricating liners to the inner spherical surface of the outer ring of spherical plain bearings, especially for self-lubricating spherical plain bearings with integral outer rings. Before the extrusion assembly of the inner and outer rings of the bearing, it is necessary to bond and cure the liner to the inner spherical surface of the outer ring, especially for smaller-sized bearings, the bonding and curing process and the technical application of the bonding action and device realization There are few studies, and there are no published patents and literature.

Contents of the invention

The purpose of the present invention is to provide a self-lubricating joint bearing pad bonding device with uniform pad bonding, consistency in all directions, good bonding effect, uniform pad thickness, and uniform clearance.

In order to achieve the above object, the following technical solutions are adopted: the present invention mainly includes a support frame, an end cover, screws, gaskets and joint bearing outer ring blanks, the support frame is a cylindrical or cuboid shell structure with one end sealed, and the sealing A guide groove is set at the end, and the end cover is installed by screws at the open end; the sliding sleeve is inserted in the guide groove, and the slot is processed in the axial direction in the sliding sleeve, and the sealing end of the sliding sleeve corresponding to the inside of the guide groove is inserted into a thread at the sealing end of the support frame. A loading screw; a corresponding positioning hole is opened on the inner surface of the end cover corresponding to each guide groove position, and an expansion mandrel is inserted in the positioning hole. The expansion mandrel is composed of a tapered mandrel and a slotted expansion sleeve. The expansion sleeve is set outside the mandrel, the front end of the expansion sleeve is fixedly connected to the washer B, the washer B is connected to the spring, the front end of the spring is connected to another washer A, the small tapered end of the mandrel passes through the washer B, the spring, and the washer A can be inserted into the guide groove In the slot of the middle sliding sleeve, the large tapered end of the mandrel is placed in the positioning hole; the expansion ring is sleeved in the middle of the expansion sleeve, and the gasket and the joint bearing outer ring blank are sequentially sleeved outside the expansion ring.

The slot of the sliding sleeve is a tapered groove bottom.

The end of the mandrel away from the conical head is provided with an outwardly protruding dismounting half ring.

Both ends of the expansion ring are cylindrical, and the middle is a raised spherical surface, and a cross expansion joint is provided in the axial direction.

The expansion mandrel is a standard part, and the taper ratio of the mandrel is 1:16.

The working process is roughly as follows:

Remove the screws, remove the end cover, install the expansion ring, the liner and the outer ring blank of the joint bearing in sequence on the outside of the expansion sleeve, insert one end of the mandrel into the expansion ring, insert the other end of the mandrel into the positioning hole in the end cover, and then insert the The end caps are snapped back onto the support frame and secured with screw seals. At this time, rotate the loading screw, push the sliding sleeve to move horizontally in the guide groove through the precession of the loading screw, squeeze the spring through the sliding sleeve, and the spring will give a pressure to the expansion sleeve, so that the slotted expansion sleeve moves along the tapered mandrel. Axial movement, and finally produce radial deformation; the expansion ring is sleeved on the expansion mandrel, and a cross expansion and contraction joint is set in the axial direction, and the spherical shape of the middle part of the expansion ring is the same as the inner spherical shape of the outer ring blank of the joint bearing, and the diameter of the expansion sleeve The radial expansion drives the expansion ring to deform radially, and the expanded expansion ring is used to prop up the liner outward, so that the liner fits closely on the inner spherical surface of the blank of the outer ring of the spherical plain bearing.

Compared with the prior art, the present invention has the following advantages: less damage to the liner during the process, uniform bonding of the liner and consistency in all directions, and the liner can withstand a certain amount of pressure during the curing process in a high-temperature environment after bonding. The pressure can improve the bonding quality of the plain bearing pad, and can realize the bonding action of the spherical plain bearing pad with a smaller size.

Description of drawings

Figure 1 is a schematic diagram of the assembly of the present invention.

Fig. 2 is a schematic diagram of the structure of the expanding ring of the present invention.

Reference numerals: 1 is the loading screw, 2 is the sliding sleeve, 3 is the support frame, 3-1 is the guide groove, 4 is the spring, 5-1 is the washer B, 5-2 is the washer A, 6-1 is the expansion sleeve , 6-2 is a mandrel, 7 is a bearing outer ring blank, 8 is a liner, 9 is an expansion ring, 10 is a dismantling half ring, 11 is an end cover, 12 is a screw, and 13 is a positioning hole.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figures 1 and 2, the present invention mainly includes a support frame 3, an end cover 11, a screw 12, a liner 8 and a joint bearing outer ring blank 7, and the support frame is a cylinder or a cuboid shell structure with one end sealed , a guide groove 3-1 is set at the sealing end, and the end cover is installed by screws at the opening end; the sliding sleeve 2 is inserted in the guiding groove, and the slot is machined in the sliding sleeve along the axial direction, and the sealing end of the support frame corresponds to the inside of the guide groove A loading screw 1 is threaded into the sealing end of the sliding sleeve; a corresponding positioning hole 13 is opened on the inner surface of the end cover corresponding to each guide groove position, and an expansion mandrel is inserted in the positioning hole, and the expansion mandrel is formed by a tapered The mandrel 6-2 and the slotted expansion sleeve 6-1 are composed of the expansion sleeve outside the mandrel, the front end of the expansion sleeve is fixedly connected to the washer B5-1, the washer B is connected to the spring 4, and the front end of the spring is connected to another washer A5-2 , the small tapered end of the mandrel passes through the washer B, the spring, and the washer A and can be inserted into the slot of the sliding sleeve in the guide groove, and the large tapered end of the mandrel is inserted in the positioning hole; the expansion ring 9 is sleeved in the middle of the expansion sleeve, A liner and a joint bearing outer ring blank are sheathed in turn on the outside of the expansion ring.

The slot of the sliding sleeve is a tapered groove bottom.

On the end of the mandrel away from the conical head, there is a dismantling half-ring 10 protruding outward.

Both ends of the expansion ring are cylindrical, and the middle is a raised spherical surface, and a cross expansion joint is provided in the axial direction.

The expansion mandrel is a standard part, and the taper ratio of the mandrel is 1:16.

Example 1:

First, apply glue to the inner spherical surface of the bearing outer ring blank and the non-lubricating surface of the liner, then paste the liner on the inner spherical surface of the spherical plain bearing outer ring blank, and put the spherical plain bearing outer ring blank and the liner together on the expansion ring; then put The expansion sleeve of the expansion mandrel is moved to the small taper end of the mandrel, and then the expansion ring is placed on the expansion mandrel; the small taper end of the expansion mandrel is installed in sequence with washer A, spring and washer B; the sliding sleeve is put into the support frame Put the expansion mandrel together with the small taper end of the parts installed on it into the cylindrical hole of the sliding sleeve, and install the large taper end in the positioning hole of the end cover; finally, the support frame and the end cover are connected by screws , the loading screw is slightly screwed into the threaded hole of the support frame.

After the assembly is completed, tighten the loading screw and push the sliding sleeve to slide in the guide groove of the support frame. The axial force is transmitted to the expansion sleeve through the washer A, spring and washer B. The expansion sleeve moves from the small taper end to the large end along the mandrel. During the movement of the tapered end, the expansion and contraction joints gradually increase, and the outer diameter of the expansion sleeve increases accordingly, so that the expansion ring sleeved on the expansion mandrel is forced to expand, and finally the liner is tightly connected to the inner spherical surface of the outer ring blank of the spherical plain bearing. fit. At this time, put the self-lubricating joint bearing bonding device into a high temperature environment for curing. After the curing is completed, loosen the screws, remove the end cover, reverse the expansion mandrel, and disassemble the cured bearing outer ring blank conveniently by removing the half ring.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. All such modifications and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (5)

1. a self-lubricating oscillating bearing liner adhering device, mainly comprise supporting frame, end cap, screw, liner and joint shaft bearing outer ring blank, it is characterized in that: support frame as described above is cylindrical body or the cuboid shell construction of an end closure, offer guiding groove at sealing end, by screw, end cap is installed at opening end; In guiding groove, assign sliding sleeve, in sliding sleeve, in axial direction process slot, insert a load screw at the sliding sleeve sealing end screw thread of the corresponding guiding groove inside of supporting frame sealing end; Corresponding positioning hole is offered in the corresponding each guiding groove position of the internal surface of end cap, an expanding arbor is assigned in positioning hole, described expanding arbor is made up of the mandrel with tapering and split expansion set, expansion set is enclosed within mandrel exterior, the affixed packing ring B in expansion set front end, packing ring B is connected with spring, and spring at front end connects another packing ring A, the Small Taper end of mandrel can insert in the slot of sliding sleeve in guiding groove through packing ring B, spring, packing ring A, and the steep-taper end of mandrel assigns in positioning hole; In the middle part of expansion set, be socketed tensioner ring, overlap successively in tensioner ring outside and have liner and joint shaft bearing outer ring blank.

2. a kind of self-lubricating oscillating bearing liner adhering device according to claim 1, is characterized in that: the slot of described sliding sleeve is at the bottom of cone tank.

3. a kind of self-lubricating oscillating bearing liner adhering device according to claim 1, is characterized in that: be provided with the dismounting semi-ring of outwardly convex at mandrel away from one end of conical head.

4. a kind of self-lubricating oscillating bearing liner adhering device according to claim 1, is characterized in that: described tensioner ring two ends are cylndrical surface, middle part is protruding sphere, offer cross expansion or contraction joints at axial direction.

5. a kind of self-lubricating oscillating bearing liner adhering device according to claim 1, is characterized in that: described expanding arbor is standard piece, the taper ratio of mandrel is 1:16 tapering.