CN116810424B - Swing rod bearing inner ring turning clamp and method - Google Patents

Abstract

The turning clamp comprises an expansion assembly, a pull rod assembly, a shifting fork, a supporting body flange, a handle seat and a driving device, wherein the handle seat is connected with the supporting body through the supporting body flange, the output end of the driving device is connected with the distal end of the shifting fork, the proximal end of the shifting fork is connected with a first part of the pull rod assembly, a second part of the pull rod assembly is rotatably arranged on the supporting body, a third part of the pull rod assembly is connected with one part of the expansion assembly, a swing rod bearing is arranged on the outer side of the other part of the expansion assembly, and the position change of the other part of the expansion assembly is realized through the movable of the pull rod assembly, so that the swing rod bearing is fixed or released by the other part of the expansion assembly. Through setting up the pull rod subassembly, design into laborsaving lever with the second pull rod in the pull rod subassembly, its distance that forces the point to the fulcrum is greater than the distance of resistance point to the fulcrum for the drive of second pull rod is laborsaving more, has effectively improved the life of second pull rod.

Description

Swing rod bearing inner ring turning clamp and method

Technical Field

The invention relates to the field of machining equipment, in particular to a turning clamp and method for an inner ring of a swing rod bearing.

Background

The special bearing is widely applied in the electric tool industry, and the inner ring of the swing rod bearing is one of important components of the special bearing. The outer side of the inner ring of the swing rod bearing is provided with a plurality of grooves, balls are installed through the grooves, and meanwhile grinding processing is needed in the inner ring of the swing rod bearing, so that the inner ring of the swing rod bearing is fixed by using related clamps for realizing the grinding processing of the grooves and the inner part of the inner ring of the swing rod bearing.

At present, a clamp for turning the inner ring of the swing rod bearing usually adopts a sleeve mode, the swing rod bearing is inserted into the sleeve to be fixed and then is tightly propped against the swing rod bearing by screwing in a nut, so that the turning of the inner ring of the swing rod bearing is realized, but the problem of installing the swing rod bearing in the sleeve mode is as follows:

firstly, turning needs to be realized once in the course of working four steps of installing the swing rod bearing, pressing the sleeve into, pressing the sleeve out and taking out the swing rod bearing, and this kind of mode is loaded down with trivial details and has still increased installation operation step, has further reduced the operating efficiency for the clamping is dismantled time consuming much, and its positioning accuracy is poor, and frequent change can increase the management cost and the processing cost of enterprise.

And secondly, operators are easy to cause bubbling at the hand tiger mouth in the process of screwing in and unscrewing out for a long time, and even scratches easily occur in the process of assembling and disassembling, so that the labor intensity of the operators is improved, the safety coefficient of the operators in the process of operation is reduced, and safety accidents are easily caused.

And thirdly, the groove has a specific angle with the axial direction, so the processing technology is complex.

Disclosure of Invention

In view of the foregoing drawbacks of the prior art, an object of the present invention is to provide a fixture and a method for turning an inner ring of a swing rod bearing, so as to solve one or more problems in the prior art.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

the utility model provides a pendulum rod bearing inner race car adds clamping apparatus and method, includes expansion assembly, pull rod subassembly, shift fork, supporter flange, handle seat and drive arrangement, the handle seat passes through the supporter flange and is connected with the supporter, drive arrangement's output stretches into the handle seat is connected with the distal end of shift fork, the proximal end and the first part of pull rod subassembly of shift fork are connected, the second part of pull rod subassembly rotationally sets up in the supporter, the third part of pull rod subassembly is connected in the part of expansion assembly, the other part outside of expansion assembly sets up pendulum rod bearing, through the movable realization of pull rod subassembly expansion assembly another part position changes, makes pendulum rod bearing by expansion assembly another part is fixed or is released.

Further, the expansion assembly comprises a base and an expansion collet chuck movably arranged on the outer side of the base, a taper hole is formed in the expansion collet chuck, the base is provided with a taper portion matched with the taper hole and a first through hole through which a part of the pull rod assembly can pass, a plurality of pin mounting holes are uniformly formed in the taper portion, and the expansion collet chuck can change the outer diameter of the expansion collet chuck along the movement of the taper portion.

Further, the pull rod assembly comprises a first pull rod and a second pull rod connected with the distal end of the first pull rod, a part of the second pull rod is connected with a part of a third pull rod, and the proximal end of the first pull rod is connected with the expanding collet chuck.

Further, the first pull rod comprises a first pull rod body, a plurality of first pin holes are formed in the proximal end of the first pull rod body, an extension portion is arranged at the distal end of the first pull rod body, and at least two clamping blocks are arranged on the outer side of the extension portion.

Further, the second pull rod comprises a second pull rod body, the outer side of the second pull rod body is connected with a pair of shaft bodies, the second pull rod body is provided with a second through hole, and clamping grooves are uniformly distributed on the inner side of the second through hole.

Further, the third pull rod comprises a third pull rod body, the far end of the third pull rod body is provided with a pair of connecting arms, and each connecting arm is provided with a second pin hole; the proximal end of the third pull rod body is provided with a third pin hole, a pair of second arms are further arranged at the proximal end of the third pull rod body near the third pin hole, and each second arm is provided with an assembly groove which can be connected with the shaft body.

Further, the shifting fork comprises a shifting fork first body and a shifting fork second body connected with the shifting fork first body, at least one protruding portion is arranged on the outer side of the shifting fork first body, a boss is arranged on the shifting fork second body, and a third pin hole is formed in the boss.

Further, the expanding collet includes a collet body having a pair of first protrusions at a proximal end thereof; the base body further comprises a base, and a plurality of first mounting holes and first positioning holes are formed in the base.

Further, the supporting body comprises a supporting body, the supporting body is provided with a pair of first pin holes and pull rod mounting holes, and a plurality of second mounting holes and second positioning holes are further formed in the supporting body at positions close to the pull rod mounting holes.

Further, a shifting fork mounting port is formed in the support body flange; the handle seat comprises a handle seat body, a shifting fork mounting hole is formed in the handle seat body, a pair of guide grooves are formed along the hole wall of the shifting fork mounting hole, a positioning column mounting hole is formed in the handle seat body at each guide groove, and a positioning column is further arranged in the positioning column mounting hole.

Correspondingly, the invention also provides a method for turning the fixture of the inner ring of the swing rod bearing, which comprises the following steps:

sleeving the swing rod bearing on the expansion collet;

the power head provides power and transmits the power to the screw rod, the screw rod rotates to drive the shifting fork to move along the proximal direction and transmit the power to the third pull rod, one part of the third pull rod also acts in the direction close to the swing rod bearing, and the other part of the third pull rod acts in the direction close to the shifting fork and drives the first pull rod to move in the direction close to the shifting fork, so that the expanding collet chuck moves from the first position to the second position, and the radial supporting force is used for fixing the expanding collet chuck;

after turning is completed, the power head provides reverse power to be transmitted to the screw rod and enables the shifting fork to reset, the screw rod rotates reversely to drive the shifting fork to move along the distal end direction and transmit power to the third pull rod, one part of the third pull rod rotates towards the direction close to the shifting fork, the other part of the third pull rod rotates towards the direction far away from the shifting fork, the expanding collet chuck moves towards the proximal end direction close to the swing rod bearing, the outer diameter of the expanding collet chuck is reset, and the fixing of the swing rod bearing is loosened;

and taking out the swing rod bearing from the expansion collet chuck.

Compared with the prior art, the invention has the following beneficial technical effects:

through setting up the pull rod subassembly, design into laborsaving lever with the second pull rod in the pull rod subassembly, its distance that forces the point to the fulcrum is greater than the distance of resistance point to the fulcrum for the drive of second pull rod is laborsaving more, has effectively improved the life of second pull rod. And meanwhile, the waist-shaped hole is formed in the third pull rod, so that the shifting fork is not limited in the action process, power can be quickly transmitted to the third pull rod of the pull rod assembly, the flexibility of shifting fork movement is guaranteed, the labor-saving effect of the third pull rod is guaranteed, and the assembly time is saved as the assembly time is only required to finish one-time assembly and disassembly after the test.

Further, a clamping block is arranged in the first pull rod, a clamping groove which can be matched with the clamping block is formed in the second pull rod, the quick positioning and connection of the first pull rod and the second pull rod can be realized, the connection firmness of the first pull rod and the second pull rod is ensured, and the first pull rod and the second pull rod are prevented from being separated.

Furthermore, by utilizing the cooperation of the taper hole in the expansion collet and the taper part in the seat body, the pin mounting port is formed in the taper part, and the expansion collet can be driven to move relative to the taper part in the pin mounting port by combining the first pin, so that the outer diameter of the expansion collet is changed, and the inner ring of the swing rod bearing is fixed and loosened.

Furthermore, the convex part made of hard alloy materials is adopted in the shifting fork, the positioning groove is further formed, so that the shifting fork has a guiding function, and meanwhile, the guiding groove is formed in the handle seat, so that high concentricity is formed between the movement of the shifting fork and the handle seat. And meanwhile, the positioning column is also arranged in the handle seat and is released from the positioning groove or the protruding part, so that the shifting fork is always released from the holding position by the positioning column when in a non-working state, and moves along the guide groove when in a working state.

Drawings

Fig. 1 is a schematic axial view of a fixture and a method for turning an inner ring of a swing rod bearing according to an embodiment of the present invention.

Fig. 2 shows a cross-sectional view of a fixture and a method for turning an inner ring of a swing rod bearing according to an embodiment of the present invention.

Fig. 3 shows a schematic structural diagram of an expansion sleeve in a fixture and a method for turning an inner ring of a swing rod bearing according to an embodiment of the invention.

Fig. 4 shows a schematic cross-sectional structure of an expansion sleeve in a swing rod bearing inner ring turning clamp and a method according to an embodiment of the invention.

Fig. 5 shows a schematic structural diagram of a first pull rod in a turning fixture and a turning method for an inner ring of a swing rod bearing according to an embodiment of the invention.

Fig. 6 shows a schematic structural diagram of a conical seat in a fixture and a method for turning an inner ring of a swing rod bearing according to an embodiment of the invention.

Fig. 7 shows a schematic structural diagram of a support body in a fixture and a method for turning an inner ring of a swing rod bearing according to an embodiment of the invention.

Fig. 8 shows a schematic structural diagram of a second pull rod in the fixture and the method for turning the inner ring of the swing rod bearing according to the embodiment of the invention.

Fig. 9 shows a schematic structural diagram of a third pull rod in the fixture and the method for turning the inner ring of the swing rod bearing according to the embodiment of the invention.

Fig. 10 shows a schematic structural diagram of a shift fork in a fixture and a method for turning an inner ring of a swing rod bearing according to an embodiment of the invention.

Fig. 11 shows a schematic structural diagram of a support flange in a fixture and a method for turning an inner ring of a swing rod bearing according to an embodiment of the invention.

Fig. 12 is a schematic structural view of a handle holder in a fixture and a method for turning an inner ring of a swing rod bearing according to an embodiment of the present invention.

The reference numerals in the drawings: 1. a swing rod bearing; 2. expanding the collet; 200. a first projection; 201. a collet body; 202. a first hole; 203. a first opening; 204. a second opening; 205. a second hole; 206. taper holes; 3. a first pin; 4. a first pull rod; 400. a first tie rod body; 401. a first pin hole; 402. an extension; 403. a clamping block; 5. a base; 500. a base; 501. a first mounting hole; 502. a first positioning hole; 503. a cone portion; 504. a pin mounting opening; 505. a first through hole; 6. a fastener; 7. a second pull rod; 700. a second pull rod body; 701. a shaft body; 702. a second through hole; 703. a clamping groove; 8. a support body; 800. a support body; 801. a second mounting hole; 802. a second positioning hole; 803. a pull rod mounting hole; 804. a third opening; 805. a pin shaft mounting hole; 9. a second pin; 10. a third pull rod; 1000. a third tie rod body; 1001. a connecting arm; 1002. a second pin hole; 1003. a second arm; 1004. a third pin hole; 1005. an assembly groove; 11. a support body flange; 1100. a flange base; 1101. a third positioning hole; 1102. a third mounting hole; 1103. a flange; 1104. a fourth positioning hole; 1105. a shifting fork mounting port; 1106. a fourth mounting hole; 12. a shifting fork; 1200. a shift fork first body; 1201. a positioning groove; 1202. a second projection; 1203. a shift fork second body; 1204. a fourth pin hole; 1205. a boss; 13. a handle base; 1300. a handle base body; 1301. positioning columns; 1302. a guide groove; 1303. a fork mounting hole; 1304. positioning column mounting holes; 1305. a fifth positioning hole; 1306. a fifth mounting hole; 14. a limit nut; 15. a screw; 16. a sheath; 17. a third pin; 18. a power head.

Detailed Description

In order to make the purposes, technical schemes and advantages of the invention more clear, the invention provides a turning clamp and a turning method for an inner ring of a swing rod bearing, which are further described in detail below with reference to the accompanying drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the invention. For a better understanding of the invention with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or essential characteristics thereof.

In order to more clearly describe the above-mentioned clamp and method for turning the inner ring of the oscillating bar bearing, the present invention defines terms "distal end" and "proximal end", specifically, "distal end" means an end far away from the hand position of the operator during manual operation, and "proximal end" means an end near the operator during operation, taking fig. 1 as an example, the left side of fig. 1 is the distal end, and the right side of fig. 1 is the proximal end.

Referring to fig. 1 and 2, the turning fixture for the inner ring of the swing rod bearing comprises an expansion assembly, a pull rod assembly, a shifting fork, a supporting body 8, a supporting body flange 11, a handle seat 13 and a driving device, wherein the distal end of the shifting fork 12 extends into the handle seat 13, the handle seat 13 is connected with the supporting body 8 through the supporting body flange 11, and the pull rod assembly is provided with a part positioned between the supporting body flange 11 and the supporting body 8. The output end of the driving device stretches into the handle seat 13 to be connected with the distal end of the shifting fork, the proximal end of the shifting fork is connected with the first part of the pull rod assembly, the second part of the pull rod assembly is rotatably arranged on the supporting body 8, the third part of the pull rod assembly is connected with one part of the expansion assembly, the outer side of the other part of the expansion assembly is provided with the swing rod bearing, and the position of the other part of the expansion assembly is changed through the movable of the pull rod assembly, so that the swing rod bearing is fixed or released by the other part of the expansion assembly.

Further, referring to fig. 2, the driving device is preferably a screw 15 and a power head 18 connected to a proximal end of the screw 15, wherein a distal end of the screw 15 passes through a limit nut 14 and extends into the handle base 13, the limit nut 14 is in threaded connection with a proximal end of the handle base 13, a threaded hole capable of being in threaded connection with the screw 15 is formed in a center of the limit nut 14, and the screw 15 can be driven to rotate by the power head 18.

Further, referring to fig. 2, 3, 4 and 6, the expanding assembly includes a base 5 and an expanding collet 2 movably disposed outside the base 5.

Specifically, please continue to refer to fig. 2, 3, 4 and 6, the expansion collet 2 generates a clamping force by using elastic deformation, a taper hole 206 is formed in the expansion collet 2, the seat 5 has a taper portion 503 capable of being matched with the taper hole 206 and a first through hole 505 through which a part of the pull rod assembly can pass, the taper hole 206 can be matched with and concentric with the taper portion 503, a plurality of pin mounting holes 504 are uniformly formed in the taper portion 503, the expansion collet 2 can move along the taper portion 503 to change the outer diameter of the expansion collet 2, the expansion collet 2 can tightly press and fix the inner ring of the swing rod bearing 1 when the outer diameter increases, and conversely, a gap is formed between the expansion collet 2 and the inner ring of the swing rod bearing when the outer diameter is reset, so that the swing rod bearing 1 can be conveniently taken out.

Further, referring to fig. 3 and 4, the expanding collet 2 includes a collet body 201, a pair of first protruding portions 200 are provided at a proximal end of the collet body 201, and an outer side of the first protruding portions 200 is used to abut against a step of an inner ring of the rocking beam bearing 1, so as to realize the pre-positioning of the rocking beam bearing 1. Further, in order to achieve the elasticity of the expanding collet 2, a first opening 203 is formed at the distal end of the collet body 201 along the axial direction, and a first hole 202 is further formed at the tail end of the first opening 203, where the first hole 202 is used to cooperate with the first pin 3. Similarly, a second opening 204 is formed at the proximal end of the collet body 201 along the axial direction, and a second hole 205 is formed at the tail end of the second opening 204. By providing the first opening 203 and the second opening 204, the expanding collet 2 has elasticity and can increase the outer diameter after being stressed and restore the outer diameter after restoring the elasticity.

Further, referring to fig. 2 and 6, the base 5 further includes a base 500, the taper 503 is connected to the base 500 to form an integral structure, the base 500 is further provided with a plurality of first mounting holes 501 and first positioning holes 502 around the taper 503, the base 5 can be quickly positioned through the first positioning holes 502, and the base 5 can be fixed to the support 8 through the fastening members and the first mounting holes 501.

The specific structure of the tie rod assembly is described in detail below:

referring to fig. 1, 2, 5, 6 and 7, the pull rod assembly serves as a labor-saving lever and functions as a linkage fork 12 and an expanding collet 2, and specifically, the pull rod assembly includes a first pull rod 4 and a second pull rod 7 connected to a distal end of the first pull rod 4, the second pull rod 7 further has a portion connected to a portion of a third pull rod 10, and a proximal end of the first pull rod 4 is connected to the expanding collet 2.

Further, referring to fig. 2 and 5, the first pull rod 4 includes a first pull rod body 400, and in the swing rod bearing inner race turning fixture of this embodiment, the first pull rod body 400 is preferably cylindrical, and the first pull rod body 400 penetrates through the first through hole 505 of the seat 5. In the first embodiment, the first pin holes 401 are preferably four, and are distributed in a quarter form at the proximal end of the first tie rod body 400, and the first pins 3 are respectively installed in each first pin hole 401.

Further, referring to fig. 2 and 5, an extension portion 402 is further provided at the distal end of the first pull rod body 400, the extension portion 402 is preferably a cylinder, the outer diameter of the extension portion 402 is smaller than the outer diameter of the first pull rod body 400, and the extension portion 402 and the first pull rod body 400 are coaxially disposed. A plurality of clamping blocks 403 are further formed by extending along the radial direction on the outer side of the extension part 402, and the clamping blocks 403 are uniformly distributed on the outer side of the extension part 402.

Further, please refer to fig. 2 and 5, in the swing rod bearing inner ring turning fixture of the present embodiment, the number of the clamping blocks 403 is four and are uniformly distributed on the outer side of the extension portion 402 in a four-divided manner, so that the included angle between the center lines of the adjacent clamping blocks 403 is 90 °, however, in other embodiments of the present invention, the number of the clamping blocks 403 may be more than two, and the number of the clamping blocks is not limited, so long as the clamping blocks can be connected with the second pull rod 7.

Further, referring to fig. 2 and 8, the second pull rod 7 includes a second pull rod body 700, and shaft bodies 701 are respectively connected to the left and right ends of the second pull rod body 700. The second through hole 702 is formed in the center of the second pull rod body 700, and clamping grooves 704 are uniformly distributed along the inner side of the second through hole 702, preferably, four clamping grooves 704 are preferred, and the groove depth of the clamping grooves 704 is matched with the thickness of the clamping blocks 403, so that the clamping blocks 403 of the first pull rod body 400 can be embedded into the clamping grooves 704, and the second pull rod 7 and the first pull rod 4 can be matched.

Further, referring to fig. 9, the third pull rod 10 includes a third pull rod body 1000, a pair of connecting arms 1001 are provided at a distal end of the third pull rod body 1000, a portion of the fork is accommodated between the pair of connecting arms 1001, a second pin hole 1002 is provided on each of the connecting arms 1001, and a third pin 17 may penetrate through the second pin hole 1002 and be connected with a portion of the fork. A third pin hole 1004 is further formed at the proximal end of the third pull rod body 1000, and the third pin hole 1004 is used for connecting with the second pin 9, so as to realize that the third pull rod 1 is rotatably disposed on the supporting body 8.

Further, referring to fig. 9, a pair of second arms 1003 are further disposed near the third pin hole 1004 at the proximal end of the third tie rod body 1000, and the second arms 1003 are disposed at intervals, and adjacent second arms 1003 are used for accommodating the second tie rod body 700. At the end of each of the second arms 1003, a fitting groove 1005 is provided, which is connectable to the shaft body 701, and the fitting groove 1005 is preferably U-shaped.

Further, with continued reference to fig. 9, in the third tie rod 10, which may be used as a labor saving lever, the distance between the center of the second pin hole 1002 and the center of the third pin hole 1004 is greater than the distance between the center of the third pin hole 1004 and the center of the fitting groove 1005. Specifically, the length L1 from the center of the second pin hole 1002 where the third pin 17 is installed to the center of the third pin hole 1004 where the second pin 9 is installed is the distance from the force point to the fulcrum in the third tie rod 10, where the second pin 9 is installed in the third pin hole 1004 as the fulcrum, and the length L2 from the center of the fitting groove 1005 (or the center of the shaft body 701) to the center of the third pin hole 1004 is the distance from the resistance point to the fulcrum, where the fitting groove 1005 has a U-shaped structure formed by a semicircle and a straight edge, so that the center of the fitting groove 1005 is the center of the semicircle, and since the distance from the force point to the fulcrum is greater than the distance from the resistance point to the fulcrum, a labor-saving lever is formed, that is, the rotation of the tie rod assembly in the support body 8 can be realized by a smaller force. For example, the 10kg force is required to drive the part of the pull rod assembly to act, and the 10kg force is reduced to 1kg force through the labor-saving lever, so that the labor-saving pull rod has the labor-saving effect, the service life of the third pull rod 10 is ensured, and the damage to the third pull rod 10 caused by overlarge force for a long time is avoided.

The specific structure of the fork 12 is described in detail below:

referring to fig. 10, the shift fork 12 includes a first shift fork body 1200 and a second shift fork body 1203 connected to the first shift fork body 1200, and a threaded hole is formed in the first shift fork body 1200 and can be screwed with the screw 15, wherein the first shift fork body 1200 is preferably cylindrical, and the second shift fork body 1203 is rectangular. At least one second protruding portion 1202 is disposed on the outer side of the first body 1200 of the shift fork, preferably, in the turning fixture for the inner race of the swing rod bearing in this embodiment, the second protruding portions 1202 are preferably a pair, each second protruding portion 1202 is symmetrically disposed with the axle center of the first body 1200 of the shift fork as a center, and the second protruding portion 1202 is preferably made of a cemented carbide material, and is disposed on the outer side of the first body 1200 of the shift fork in an interference fit manner. In order to realize the quick docking of the first body 1200 and the handle seat 13, a positioning groove 1201 is further formed on the outer side of the first body 1200 at the position where the second protrusion 1202 is provided, and the positioning groove 1201 has a guiding function, so that the quick assembly of the first body 1200 is facilitated.

Further, referring to fig. 10, a boss 1205 is further disposed on the upper surface of the second body 1203, and a fourth pin hole 1204 is formed in the boss 1205. Preferably, in the turning fixture for the inner ring of the swing rod bearing according to this embodiment, the fourth pin hole 1204 is preferably a kidney-shaped hole, and the kidney-shaped hole is formed to ensure that the position of the shifting fork 12 is not limited in the action process, so that power can be quickly transferred to the third pull rod 10 of the pull rod assembly, which not only ensures the flexibility of the shifting fork 12 in moving, but also ensures the labor-saving effect of the third pull rod 10.

The specific structure of the support body 8 is described in detail below as follows:

referring to fig. 7, the support body 8 is configured to be connected to the base body 5, and is also configured to mount the second pin 9 through the pin shaft mounting hole 805, so as to enable the second pin 9 to be assembled with the third pin hole 1004, thereby enabling the third link 10 to be rotatable in the support body 8. Specifically, referring to fig. 7, a pull rod mounting hole 803 through which the first pull rod 4 passes is formed in the center of the support body 8, a plurality of second mounting holes 801 and at least two second positioning holes 802 are formed around the outer side of the pull rod mounting hole 803 on the surface of the support body 8, and the quick positioning of the seat body 5 on the support body 8 can be realized through the pins, the second positioning holes 802 and the first positioning holes 502. And the second mounting hole 801, the first mounting hole 501 and the fastener 6 can realize the fixation of the seat body 5 on the support body 8.

Further, with continued reference to fig. 7, to accommodate the third tie rod 10, a third opening 804 is provided in the side of the support body 800 facing the support body flange 11.

The specific structure of the support flange 11 is described in detail below as follows:

referring to fig. 11, the support flange 11 is provided with a fork mounting opening 1105, the support flange includes a flange base 1100 and a flange 1103 connected to the flange base 1100, the fork mounting opening 1105 makes the flange 1103 be symmetrically arranged with respect to a center of the support flange 11, and each flange 1103 is provided with a plurality of third positioning holes 1101 and a plurality of third mounting holes 1102, so as to be positioned with the bottom of the support 8 by the positioning pins and the third positioning holes 1101, and be fixedly connected with the bottom of the support 8 by the fastening members and the third mounting holes 1102.

Further, referring to fig. 11, a fourth positioning hole 1104 and a plurality of fourth mounting holes 1106 are further formed in the flange base 1100, and the fastening with the handle base 13 can be achieved through the fastening device and the fourth mounting holes 1106.

The specific structure of the grip base 13 is described in detail below:

referring to fig. 12, the shank base 13 is configured to cooperate with the first body 1200 of the fork in the fork 12, and a plurality of fifth positioning holes 1305 and fifth mounting holes 1306 are formed on the shank base 13 to connect the shank base 13 with the support flange 11 through fasteners, positioning members, the fifth mounting holes 1306 and the fifth positioning holes 1305.

In order to match with the guiding of the boss 1205, a fork mounting hole 1303 is formed in the center of the handle base body 1300, a pair of guide grooves 1302 are formed along the hole wall of the fork mounting hole 1303, a positioning column mounting hole 1304 is further formed in the handle base body 1300 at each guide groove 1302, and a positioning column 1301 is further arranged in the positioning column mounting hole 1304. When the boss 1205 moves in the guide groove 1302, the positioning column 1301 can be pressed to be contracted into the positioning column mounting hole 1304 when the positioning column 1301 is released, and when the boss 1205 does not release the positioning column 1301, a part of the positioning column 1301 pops out and releases the positioning groove 1201, so that the shifting fork 12 is always concentric with the handle seat 13 in the powered movement process.

Further, in order to ensure that the turning fixture of the inner ring of the swing rod bearing is not affected by the turning environment, impurities such as scrap iron and the like are prevented from entering the fixture to affect the normal operation of the shifting fork 12 and the pull rod assembly, the outer side of the third opening 804 in the supporting body 8 and the outer side of the flange 1103 in the supporting body flange 11 are further connected with the sheath 16, so that the protection function is achieved.

The specific working process of the invention is as follows:

referring to fig. 1 to 12, after the swing rod bearing 1 is sleeved on the outer side of the expanding collet 2, the positioning of the swing rod bearing 1 is achieved through the first protruding portion 200. The power head 18 provides power and transmits the power to the screw 15, the screw 15 rotates in the limit nut 14 and drives the shifting fork 12 to move along the proximal direction, the boss 1205 in the shifting fork 12 is connected with the second pin hole 1002 in the connecting arm 1001 through the fourth pin hole 1204 and the third pin 17, so that the power can be transmitted to the third pull rod 10, the third pull rod 10 is rotatably arranged in the supporting body 8 through the second pin 9, the stressed connecting arm 1001 of the third pull rod 10 rotates towards the direction close to the swing rod bearing 1, the second arm 1003 at the proximal end of the third pull rod 10 rotates towards the direction close to the shifting fork 12 at the opposite moment, the second arm 1003 is connected with the shaft body 701, the second pull rod 7 is synchronously driven to move towards the shifting fork 12 by the action of the second arm 1003, the distal end of the first pull rod 4 is also connected with the first pull rod 4 in the direction close to the shifting fork 12, the proximal end of the first pull rod 4 is connected with the first hole 202 through the first pin 3, the tapered part 5 is arranged in the seat body 5 and can move towards the inner ring 503 of the seat body 2 in the direction close to the inner ring 2, and the tapered part of the seat 2 is gradually moved towards the inner ring 503 of the seat 2, and the tapered part of the seat 2 is gradually moved towards the seat 2 is moved towards the inner ring 2, the seat 2 is gradually towards the inner ring 503 of the seat 2, and the inner ring 2 is moved towards the seat 2 is gradually moved towards the seat part of the seat 2, and the tapered part is moved towards the inner ring 2.

In contrast, when the turning is finished, the power head 18 drives the screw 15 to rotate in the opposite direction, the shift fork 12 is reset, and in the resetting process, the boss 1205 in the shift fork 12 and the connecting arm 1001 of the third pull rod 10 act in the direction approaching to the power head 18, at this time, the second pull rod 7 and the first pull rod 4 connected with the third pull rod 10 rotate in the direction approaching to the swing rod bearing 1, and the first pull rod 4 and the first pin 3 realize the action of expanding the collet chuck 2 in the direction approaching to the swing rod bearing 1, so that a gap is formed between the outer side of the expanding collet chuck 2 and the inner ring of the swing rod bearing 1, so that the fixing of the swing rod bearing 1 is released, and the swing rod bearing can be conveniently taken out by an operator.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (7)

1. The utility model provides a pendulum rod bearing inner race car adds clamping apparatus which characterized in that: the device comprises an expansion assembly, a pull rod assembly, a shifting fork, a supporting body flange, a handle seat and a driving device, wherein the handle seat is connected with the supporting body through the supporting body flange, the output end of the driving device stretches into the handle seat to be connected with the far end of the shifting fork, the near end of the shifting fork is connected with a third pull rod of the pull rod assembly, a second pull rod of the pull rod assembly is rotatably arranged on the supporting body, a first pull rod of the pull rod assembly is connected with one part of the expansion assembly, a swing rod bearing is arranged on the outer side of the other part of the expansion assembly, and the position change of the other part of the expansion assembly is realized through the movement of the pull rod assembly, so that the swing rod bearing is fixed or released by the other part of the expansion assembly;

the pull rod assembly comprises a first pull rod and a second pull rod connected with the distal end of the first pull rod, wherein a part of the second pull rod is connected with a part of a third pull rod, and the proximal end of the first pull rod is connected with the expansion assembly;

the first pull rod comprises a first pull rod body, a plurality of first pin holes are formed in the proximal end of the first pull rod body, an extension part is arranged at the distal end of the first pull rod body, and at least two clamping blocks are arranged on the outer side of the extension part;

the second pull rod comprises a second pull rod body, the outer side of the second pull rod body is connected with a pair of shaft bodies, the second pull rod body is provided with a second through hole, and clamping grooves are uniformly distributed on the inner side of the second through hole;

the third pull rod comprises a third pull rod body, the far end of the third pull rod body is provided with a pair of connecting arms, and each connecting arm is provided with a second pin hole; the third pin hole is formed in the proximal end of the third pull rod body, a pair of second arms are further arranged at the proximal end of the third pull rod body and close to the third pin hole, the second arms are each provided with an assembly groove capable of being connected with the shaft body, the distance between the center of the second pin hole and the center of the third pin hole is larger than the distance between the center of the third pin hole and the center of the assembly groove, the length L1 from the center of the second pin hole to the center of the third pin hole is the distance from a force point to a supporting point in the third pull rod, the length L2 from the center of the assembly groove to the center of the third pin hole is the distance from a resistance point to the supporting point, the distance from the force point to the supporting point is larger than the distance from the resistance point to the supporting point, and a labor-saving lever is formed, so that rotation of the pull rod assembly in the supporting body is realized through small acting force.

2. The swing rod bearing inner race turning fixture of claim 1, wherein: the expansion assembly comprises a base and an expansion collet chuck movably arranged on the outer side of the base, a taper hole is formed in the expansion collet chuck, the base is provided with a taper part matched with the taper hole and a first through hole through which part of the pull rod assembly can pass, a plurality of pin mounting holes are uniformly formed in the taper part, and the expansion collet chuck can change the outer diameter of the expansion collet chuck along the movement of the taper part.

3. The swing rod bearing inner race turning fixture of claim 1, wherein: the shifting fork comprises a shifting fork first body and a shifting fork second body connected with the shifting fork first body, wherein at least one protruding part is arranged on the outer side of the shifting fork first body, a boss is arranged on the shifting fork second body, and a third pin hole is formed in the boss.

4. The swing rod bearing inner race turning fixture of claim 2, wherein: the expanding collet comprises a collet body, wherein the proximal end of the collet body is provided with a pair of first protruding parts; the base body further comprises a base, and a plurality of first mounting holes and first positioning holes are formed in the base.

5. The swing rod bearing inner race turning fixture of claim 1, wherein: the support body comprises a support body, the support body is provided with a pair of first pin holes and pull rod mounting holes, and a plurality of second mounting holes and second positioning holes are further formed in the support body at positions close to the pull rod mounting holes.

6. The swing rod bearing inner race turning fixture of claim 1, wherein: a shifting fork mounting port is formed in the support body flange; the handle seat comprises a handle seat body, a shifting fork mounting hole is formed in the handle seat body, a pair of guide grooves are formed along the hole wall of the shifting fork mounting hole, a positioning column mounting hole is formed in the handle seat body at each guide groove, and a positioning column is further arranged in the positioning column mounting hole.

7. A method of turning a rocking beam bearing inner race according to any one of claims 2 to 6, comprising the steps of:

sleeving the swing rod bearing on the expansion collet;

the power head provides power and transmits the power to the screw rod, the screw rod rotates to drive the shifting fork to move along the proximal direction and transmit the power to the third pull rod, one part of the third pull rod also acts in the direction close to the swing rod bearing, and the other part of the third pull rod acts in the direction close to the shifting fork and drives the first pull rod to move in the direction close to the shifting fork, so that the expanding collet chuck moves from the first position to the second position, and the radial supporting force is used for fixing the expanding collet chuck;

after turning is completed, the power head provides reverse power to be transmitted to the screw rod and enables the shifting fork to reset, the screw rod rotates reversely to drive the shifting fork to move along the distal end direction and transmit power to the third pull rod, one part of the third pull rod rotates towards the direction close to the shifting fork, the other part of the third pull rod rotates towards the direction far away from the shifting fork, the expanding collet chuck moves towards the proximal end direction close to the swing rod bearing, the outer diameter of the expanding collet chuck is reset, and the fixing of the swing rod bearing is loosened;

and taking out the swing rod bearing from the expansion collet chuck.