CN212824130U - Clamp and forked connecting rod machining device - Google Patents

Abstract

The embodiment of the application provides a clamp and a fork-shaped connecting rod machining device, wherein the clamp comprises a clamping piece, a second ejector pin and a plurality of locking pieces, a cavity is arranged in the clamping piece, an opening for connecting the cavity is formed in the surface of the clamping piece, a first ejector pin is arranged on the surface, opposite to the opening, in the cavity, and a plurality of through holes are formed in the side wall of the cavity; the second ejector pin is arranged towards the first ejector pin and is coaxial with the first ejector pin; the locking pieces correspond to the through holes one by one, and the locking pieces can move along the axial direction of the through holes. According to the embodiment of the application, the first ejector pin and the second ejector pin which are coaxially arranged are matched with the process center hole in the fork-shaped connecting rod, so that the center of the fork-shaped connecting rod can be aligned, and the step of measuring and aligning in the related technology is omitted, therefore, the machining error caused by the measurement error is avoided, and the machining quality and the production efficiency are improved.

Description

Clamp and forked connecting rod machining device

Technical Field

The application relates to a mechanical part manufacturing technology, in particular to a clamp and a fork-shaped connecting rod machining device.

Background

Railway vehicles typically contact the track via bogies, with two bogies typically being provided for each car. In order to ensure the driving safety, a braking system is arranged on the bogie. The fork-shaped connecting rod is one of transmission parts of a bogie braking system, is mainly used for connecting a brake arm with a bogie frame and plays an important role in transmitting pulling force. The quality of the wishbone link will therefore directly affect the braking performance of the bogie.

In the related art, a blank of the forked connecting rod is generally clamped by using a three-jaw chuck on a common lathe, and then a finish machining process such as turning is performed. Namely, the three-jaw chuck on the lathe clamps the large-diameter section of the blank of the fork-shaped connecting rod, and then a worker utilizes tools such as a turning tool and the like to cut the blank of the fork-shaped connecting rod.

However, by adopting the scheme in the related technology, because the blank of the fork-shaped connecting rod is a forged piece, the quality of the positioning surface is poor, and the positioning error is large in the clamping and positioning process, the dial indicator is required to be used for centering when one fork-shaped connecting rod is produced, and the production efficiency is low; in the process, the final processing quality of the fork-shaped connecting rod is poor easily due to measurement errors and the like.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a clamp and a fork-shaped connecting rod processing device, which are mainly used for solving the problems of poor processing quality and low production efficiency of a fork-shaped connecting rod in the related technology.

According to a first aspect of embodiments of the present application, there is provided a jig for holding a wishbone connecting rod to be machined, comprising:

the clamping piece is internally provided with a cavity, the surface of the clamping piece is provided with an opening connected with the cavity, a first thimble is arranged on the surface, opposite to the opening, in the cavity, and the side wall of the cavity is provided with a plurality of through holes;

the second ejector pin is arranged towards the first ejector pin and is coaxial with the first ejector pin;

and the locking pieces are in one-to-one correspondence with the through holes, and can move along the axial direction of the through holes.

Optionally, the clamping member includes a positioning plate and a sleeve, the positioning plate and the sleeve are detachably connected, the first thimble is disposed on the positioning plate, and the plurality of through holes are disposed on the sleeve.

Optionally, the positioning plate is cylindrical, a diameter of the positioning plate is equal to an outer diameter of the sleeve, and the first thimble is disposed coaxially with the positioning plate.

Optionally, the positioning plate is provided with a plurality of connecting holes, the end surface of the sleeve facing the positioning plate is provided with a plurality of fixing holes, the plurality of connecting holes correspond to the plurality of fixing holes one to one, and the fastening member passes through the connecting holes and then is fixed in the fixing holes.

The clamp as described above, optionally, the fixing hole is a threaded hole, and the fastener is a bolt.

The clamp as described above, optionally, a plurality of the through holes are uniformly distributed on the outer circumferential surface of the sleeve.

The clamp as described above, optionally, four through holes are provided on the outer circumferential surface of the sleeve.

The clamp as described above, optionally, the locking member is a bolt, and the through hole is a threaded hole.

The clamp as described above, optionally, the surface of the locking member facing the wishbone link to be machined is a circular arc.

According to a second aspect of the embodiments of the present application, there is provided a wishbone connecting rod machining apparatus including a cutting mechanism and a fixture as described in any one of the above.

By adopting the clamp and the fork-shaped connecting rod processing device according to the embodiment of the application, the clamp comprises a clamping piece, a second thimble and a plurality of locking pieces, a cavity is arranged in the clamping piece, an opening for connecting the cavity is arranged on the surface of the clamping piece, a first thimble is arranged on the surface in the cavity opposite to the opening, and a plurality of through holes are arranged on the side wall of the cavity; the second ejector pin is arranged towards the first ejector pin and is coaxial with the first ejector pin; the locking pieces correspond to the through holes one by one, and the locking pieces can move along the axial direction of the through holes. When the clamping device is used, the first ejector pin and the second ejector pin can be used for respectively propping against the process center holes on the end faces of the two ends of the fork-shaped connecting rod to be machined, and then the locking piece is used for propping against the surface of the fork-shaped connecting rod to be machined so as to lock the fork-shaped connecting rod. The first thimble and the second thimble which are coaxially arranged are matched with the process center hole in the fork-shaped connecting rod, so that the center of the fork-shaped connecting rod can be aligned, and the step of measuring and aligning in the related technology is omitted, thereby avoiding the processing error caused by the measuring error and improving the processing quality and the production efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a simplified diagram of a clamp according to an embodiment of the present disclosure;

FIG. 2 is a schematic front view of a locating plate according to an embodiment of the present disclosure;

FIG. 3 is a schematic top view of FIG. 2;

FIG. 4 illustrates a front view schematic view of a sleeve provided in accordance with an embodiment of the present application;

FIG. 5 is a schematic top view of the structure of FIG. 4;

FIG. 6 is a simplified structural diagram of a retaining member according to an embodiment of the present application;

a schematic diagram of a wishbone connection rod to be machined is shown in fig. 7 according to an embodiment of the present application.

Reference numerals:

1-a forked connecting rod processing device;

10-a clamp; 100-positioning a plate; 110-a first thimble; 120-connecting hole; 200-a sleeve; 210-a via; 220-fixing holes; 300-a fastener; 310-arc surface;

20-a second thimble;

30-a retaining member;

40-a fork-shaped connecting rod to be processed; 410-a large diameter section; 420-small diameter section; 430-transition section.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example one

FIG. 1 is a simplified diagram of a clamp according to an embodiment of the present disclosure; please refer to fig. 1.

The present embodiment provides a jig, including: the clamping piece 10 is provided with a cavity in the clamping piece 10, an opening for connecting the cavity is formed in the surface of the clamping piece 10, a first thimble 110 is arranged on the surface, opposite to the opening, in the cavity, and a plurality of through holes 210 are formed in the side wall of the cavity.

And the second thimble 20 is disposed towards the first thimble 110, and the second thimble 20 is coaxial with the first thimble 110.

The plurality of locking members 30, the plurality of locking members 30 correspond to the plurality of through holes 210 one by one, and the locking members 30 can move along the axial direction of the through holes 210.

Specifically, the holder 10 of this embodiment is used for and forked connecting rod processingequipment 1 on the clamping part adaptation, and the clamping part includes discoid base, and the equipartition has a plurality of jack catchs on the base, and holder 10 is held by the jack catch. The clamping piece 10 is used for clamping the fork-shaped connecting rod 40 to be processed, a cavity for accommodating the fork-shaped connecting rod 40 to be processed is arranged in the clamping piece 10, an opening communicated with the cavity is formed in the surface of the clamping piece 10, the opening is formed in the side, away from the clamping portion, of the clamping piece, and the fork-shaped connecting rod 40 to be processed can extend into the cavity through the opening.

A first thimble 110 is disposed on a surface of the cavity opposite to the opening, and the first thimble 110 is used for propping against one end of the to-be-processed fork-shaped connecting rod 40 extending into the cavity, specifically, a process center hole on the to-be-processed fork-shaped connecting rod 40. The outer portion of the clamping member 10 is further provided with a second thimble 20, and the second thimble 20 and the first thimble 110 are coaxially arranged, so as to ensure the coaxiality of the two. The second thimble 20 is disposed toward the first thimble 110, and the second thimble 20 is configured to abut against an end of the to-be-machined forked link 40 located outside the cavity, specifically, another process center hole on the to-be-machined forked link 40. The first ejector pin 110 and the second ejector pin 20 are respectively abutted in the process central holes at the two ends of the forked connecting rod 40 to be processed, so that the center of the forked connecting rod 40 to be processed can be aligned, the step of measuring and aligning in the related technology is omitted, the processing error caused by the measuring error is avoided, and the processing quality and the production efficiency are improved.

In addition, a plurality of through holes 210 are formed in the side wall of the cavity of the embodiment, a plurality of locking members 30 are in one-to-one correspondence with the plurality of through holes 210, and the locking members 30 can move along the axial direction of the through holes 210, so that the locking members 30 can be abutted against the side surface of one end of the to-be-processed forked connecting rod 40 in the cavity, and the to-be-processed forked connecting rod 40 can be stably clamped.

FIG. 2 is a schematic front view of a locating plate according to an embodiment of the present disclosure; FIG. 3 is a schematic top view of FIG. 2; FIG. 4 illustrates a front view schematic view of a sleeve provided in accordance with an embodiment of the present application; FIG. 5 is a schematic top view of the structure of FIG. 4; please continue to refer to fig. 1-5.

In an alternative embodiment, the clamping member 10 includes a positioning plate 100 and a sleeve 200, and the positioning plate 100 and the sleeve 200 are detachably connected, thereby facilitating assembly as required and also facilitating daily installation and maintenance. The clamping portion of the forked link processing device 1 is clamped on the positioning plate 100, the first thimble 110 is disposed on a side of the positioning plate 100 away from the clamping portion, and the plurality of through holes 210 are disposed on the sleeve 200.

Further, the positioning plate 100 is cylindrical, the diameter of the positioning plate 100 is equal to the outer diameter of the sleeve 200, and the first thimble 110 is disposed coaxially with the positioning plate 100.

In this embodiment, the detachable connection between the positioning plate 100 and the sleeve 200 is achieved by the following structure. A plurality of connecting holes 120 are formed in the positioning plate 100, a plurality of fixing holes 220 are formed in an end surface of the sleeve 200 facing the positioning plate 100, the plurality of connecting holes 120 correspond to the plurality of fixing holes 220 one to one, and the fasteners 300 are fixed in the fixing holes 220 after penetrating through the connecting holes 120. Alternatively, the fixing hole 220 is a threaded hole, the fastening member 300 is a bolt, and the positioning plate 100 and the sleeve 200 are detachably connected by utilizing the detachability between the bolt and the threaded hole. The number of the connecting holes 120 on the positioning plate 100 can be set according to the requirement, in this embodiment, four connecting holes 120 are arranged on the positioning plate 100, and the four connecting holes are distributed at equal intervals along the same circumference; correspondingly, the sleeve 200 is also provided with four corresponding fixing holes 220.

In this embodiment, the plurality of through holes 210 are uniformly distributed on the outer circumferential surface of the sleeve 200, and the number of the through holes 210 may be set according to the shape of the wishbone connecting rod 40 to be processed, as long as it is ensured that the wishbone connecting rod 40 to be processed is stably clamped in the cavity. The sleeve 200 in this embodiment is provided with four through holes 210 on its outer circumferential surface to fit the surface shape of the wishbone link 40 to be machined.

FIG. 6 is a simplified structural diagram of a retaining member according to an embodiment of the present application; please refer to fig. 6. In this embodiment, the locking member 30 is a bolt, the through hole 210 is a threaded hole, and the position of the locking member 30 is adjusted by adjusting the length of the locking member 30 suspended in the through hole 210, so that the locking member 30 abuts against the wishbone connecting rod 40 to be processed.

Preferably, the surface of retaining member 30 of the present embodiment facing wishbone link 40 to be machined is radiused 310. The surface of retaining member 30 facing toward wishbone link 40 to be machined is shown in the state of fig. 6 as the plane of projection of retaining member 30. By arranging the surface of the locker 30 facing the wishbone-shaped link 40 to be processed as the arc surface 310, the probability of scratching the wishbone-shaped link 40 to be processed by the locker 30 can be reduced, thereby improving the yield.

FIG. 7 is a schematic diagram illustrating a wishbone connection rod being machined according to an embodiment of the present application; please refer to fig. 7. In this embodiment, the wishbone connecting rod 40 to be machined includes a large diameter section 410, a small diameter section 420 and a transition section 430, wherein the transition section 430 is disposed between the large diameter section 410 and the small diameter section 420. The section of major diameter section 410 is square, is equipped with four through-holes 210 on the sleeve 200, corresponds with four sides of major diameter section 410 respectively, and four retaining member 30 pass behind through-hole 210 respectively the butt on four sides of major diameter section 410. The surface of the large diameter section 410 facing away from the transition section 430 is provided with a process center hole, and the first thimble 110 abuts against the process center hole. The small diameter section 420 is cylindrical, and a process center hole is also formed on the surface of the small diameter section 420 away from the transition section 430, and the second thimble 20 abuts against the process center hole. The fork-shaped connecting rod 40 to be processed can be fixed from two sides through the combined action of the first thimble 110 and the second thimble 20, so as to facilitate the processing; in combination with the four retaining members 30, which abut against the large diameter section 410, the movement of the wishbone link 40 to be machined is limited. After clamping, the small diameter section 420 and the transition section 430 can be machined by a cutting tool to obtain the final product.

The clamp of the embodiment overcomes the positioning error caused by multiple clamping in the related technology, has stable workpiece quality, is simple, convenient and quick to operate, greatly reduces the labor intensity, and improves the processing efficiency. When the centering device is used, only the first part needs to be calibrated by using a dial indicator, and in the subsequent processing process of the fork-shaped connecting rod, after clamping is completed, the center of the fork-shaped connecting rod can be automatically calibrated, and the fork-shaped connecting rod can be processed by compressing the fork-shaped connecting rod.

The clamp can be used in combination with a numerically controlled lathe, manual control is changed into machining program control, the machining process is controlled more reliably (guaranteed by the numerically controlled machining program), positioning is more accurate (central holes at two ends are positioned and coincide with the actual center of a product), labor intensity is lower (only a first piece is required to be marked for adjustment), product quality is higher, and the purposes of quality improvement and efficiency improvement are achieved.

The clamp of the embodiment can realize the processing of the fork connecting rod 40 to be processed with different sizes by replacing the positioning plate 100, the sleeve 200 and the fastener with different sizes.

Example two

The present embodiment provides a fork connecting rod processing apparatus, which includes a cutting mechanism and the clamp according to the first embodiment.

The fork-shaped connecting rod processing device of the embodiment adopts the clamp of the first embodiment, so that the center of the fork-shaped connecting rod can be aligned, and the step of measuring and aligning in the related technology is omitted, thereby avoiding the processing error caused by the measuring error and improving the processing quality and the production efficiency.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. A clamp for clamping a forked connecting rod to be machined, comprising:

the clamping piece is internally provided with a cavity, the surface of the clamping piece is provided with an opening connected with the cavity, a first thimble is arranged on the surface, opposite to the opening, in the cavity, and the side wall of the cavity is provided with a plurality of through holes;

the second ejector pin is arranged towards the first ejector pin and is coaxial with the first ejector pin;

and the locking pieces are in one-to-one correspondence with the through holes, and can move along the axial direction of the through holes.

2. The clamp of claim 1, wherein said clamping member includes a positioning plate and a sleeve, said positioning plate and said sleeve being detachably connected, said first thimble being disposed on said positioning plate, and said plurality of through holes being disposed on said sleeve.

3. The clamp of claim 2, wherein the positioning plate is cylindrical, the diameter of the positioning plate is equal to the outer diameter of the sleeve, and the first thimble is coaxially disposed with the positioning plate.

4. The clamp according to claim 3, wherein the positioning plate is provided with a plurality of connecting holes, the end surface of the sleeve facing the positioning plate is provided with a plurality of fixing holes, the plurality of connecting holes correspond to the plurality of fixing holes one by one, and the fastening member is fixed in the fixing hole after passing through the connecting hole.

5. The clamp of claim 4, wherein the securing holes are threaded holes and the fasteners are bolts.

6. The clamp of claim 2, wherein the plurality of through holes are evenly distributed on the outer circumferential surface of the sleeve.

7. The clamp of claim 6, wherein four of said through holes are provided on an outer peripheral surface of said sleeve.

8. The clamp of any one of claims 1 to 7, wherein the retaining member is a bolt and the through hole is a threaded hole.

9. The jig of claim 8 wherein the surface of the retaining member facing the wishbone link to be machined is radiused.

10. A wishbone link machining apparatus comprising a cutting mechanism and a clamp according to any one of claims 1 to 9.

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