Connecting rod centering clamp and connecting rod machining device

Abstract

The utility model provides a connecting rod centering clamp and a connecting rod machining device. The connecting rod centering clamp comprises a base, a piston rod, a top cap, an expansion sleeve seat and an expansion sleeve, and the base is used for being installed on a machine tool; the piston rod is movably installed on the base and moves in the extending direction of the base. The top cap is positioned on the outer side of the base, is connected to the piston rod and moves along with the movement of the piston rod; the expansion sleeve seat is mounted on the base, and the piston rod penetrates through the expansion sleeve seat; the expansion sleeve is located between the top cap and the expansion sleeve seat and is in slope fit with the expansion sleeve seat, and at the moment, when the piston rod moves downwards, the top cap is driven by the piston rod to move downwards and abut against the expansion sleeve, so that the expansion sleeve expands outwards under the matching of the slope of the expansion sleeve seat, and the expansion sleeve is located in an end hole of the connecting rod; and the connecting rod centering clamp is used for self-centering and clamping an end hole of the connecting rod, so that the clamping effect of the connecting rod centering clamp is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting rod centering clamps, in particular to a connecting rod centering clamp and a connecting rod processing device. Background Art

[0002] With the development of science and technology, connecting rod processing devices are used in industry. The connecting rod processing devices are used to make connecting rods. The connecting rod centering fixture is a part of the connecting rod processing device. The connecting rod centering fixture is used to position and clamp the connecting rod.

[0003] In the prior art, the existing connecting rod centering clamp includes a base, a piston rod and a V-block. The piston rod is movably connected to the base, and the V-block is fixed to the base. At this time, the outer wall of the end of the connecting rod is positioned by the V-block, and self-centering is not performed. At the same time, since the V-block positions the outer wall blank surface of the end of the connecting rod, the positioning is often inaccurate and good centering cannot be achieved, resulting in poor positioning and clamping effect of the existing connecting rod centering clamp. Utility Model Content

[0004] The purpose of the utility model is to provide a connecting rod centering fixture and a connecting rod processing device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A connecting rod centering fixture, which is used as a part of a connecting rod processing device, and comprises:

[0007] A base, for mounting on a machine tool;

[0008] A piston rod is movably mounted on the base and moves along an extension direction of the base;

[0009] A top cap is located outside the base, the top cap is connected to the piston rod and moves with the movement of the piston rod;

[0010] An expansion sleeve seat, mounted on the base and penetrated by the piston rod;

[0011] An expansion sleeve is located between the top cap and the expansion sleeve seat and is beveled with the expansion sleeve seat;

[0012] When the piston rod moves downward, the top cap moves downward driven by the piston rod and presses the expansion sleeve, so that the expansion sleeve expands outward with the cooperation of the inclined surface of the expansion sleeve seat. The expansion sleeve is located in the end hole of the connecting rod and is used for self-centering and clamping the end hole of the connecting rod.

[0013] Optionally, one end of the base is provided with a cylindrical end;

[0014] The expansion sleeve seat is sleeved on the cylindrical end, and the outer side wall of one end of the expansion sleeve seat is provided with a first inclined surface;

[0015] The expansion sleeve is arranged above the expansion sleeve seat and coaxially arranged with the expansion sleeve seat; the expansion sleeve is provided with a second inclined surface, and the second inclined surface is inclinedly matched with the first inclined surface.

[0016] The expansion sleeve expands outward or retracts as the matching position between the second inclined surface and the first inclined surface is adjusted.

[0017] Optionally, the expansion sleeve is provided with an expansion groove and a first through hole, the expansion groove is connected to the first through hole and allows the expansion sleeve to expand outwards;

[0018] The top cap passes through the first through hole and is gap-connected with the first through hole; the lower side wall of the top cap contacts the upper side wall of the expansion sleeve.

[0019] Optionally, the expansion sleeve is made of spring steel, and the expansion sleeve expands or retracts by deformation of the expansion groove;

[0020] The outer side wall of the expansion sleeve is an annular surface and is used to contact the center hole of the end of the connecting rod.

[0021] Optionally, both ends of the expansion sleeve are provided with chamfers; the top cap is connected with a locking gasket, and the locking gasket and the top cap clamp the expansion sleeve.

[0022] Optionally, the base is provided with an oil circuit and an oil cavity, the oil cavity is connected to the oil circuit, and the oil circuit is used to connect to the oil inlet or oil outlet of the machine tool;

[0023] One end of the piston rod is located in the oil chamber and is driven by the oil in the oil chamber and the oil circuit, so that the piston rod moves relative to the base.

[0024] Optionally, the base is provided with a piston hole, and a portion of the piston hole forms the oil chamber;

[0025] The piston rod is movably arranged to penetrate the piston hole. The piston rod is connected with a sealing ring and is sealedly connected with the inner side wall of the piston hole through the sealing ring.

[0026] Optionally, the piston rod is connected to a guide ring, which is embedded in the inner wall of the piston hole and sleeved on the outside of the piston rod to guide the movement of the piston rod.

[0027] Optionally, a guide groove is provided on the lower side wall of the piston hole;

[0028] One end of the piston rod is connected with a guide pin, and the guide pin is inserted into the guide groove and is guidingly connected with the guide groove.

[0029] A connecting rod processing device comprises the connecting rod centering fixture.

[0030] Compared with the prior art, the beneficial effects of the utility model are:

[0031] The utility model provides a connecting rod centering clamp and a connecting rod processing device, wherein a base is used for being installed on a machine tool; a piston rod is movably installed on the base and moves along an extension direction of the base; a top cap is located at the outer side of the base, the top cap is connected to the piston rod and moves along with the movement of the piston rod; an expansion sleeve seat is installed on the base and is penetrated by the piston rod; the expansion sleeve is located between the top cap and the expansion sleeve seat and is beveled with the expansion sleeve seat, at this time, when the piston rod moves downward, the top cap moves downward driven by the piston rod and presses the expansion sleeve, so that the expansion sleeve expands outward under the beveled cooperation of the expansion sleeve seat, the expansion sleeve is located in the end hole of the connecting rod and is used for self-centering and clamping the end hole of the connecting rod, thereby improving the positioning and clamping effect of the connecting rod centering clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0033] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0034] Figure 1 A schematic diagram of a connecting rod centering fixture according to an embodiment of the present application is shown.

[0035] Figure 2 An exploded view of a connecting rod centering clamp according to an embodiment of the present application is shown.

[0036] Figure 3 A schematic diagram of a base of a connecting rod centering fixture according to an embodiment of the present application is shown.

[0037] Figure 4 A schematic diagram of an expansion sleeve seat of a connecting rod centering fixture according to an embodiment of the present application is shown.

[0038] Figure 5 A schematic diagram of an expansion sleeve of a connecting rod centering fixture according to an embodiment of the present application is shown.

[0039] Reference numerals

[0040] 100. Connecting rod centering fixture;

[0041] 10. Base; 11. Cylindrical end; 12. Oil passage; 13. Oil chamber; 14. Piston hole; 141. Guide groove;

[0042] 20. Piston rod; 21. Sealing ring; 22. Guide ring; 23. Guide pin;

[0043] 30. Top cap; 31. Locking washer;

[0044] 40. expansion sleeve seat; 41. first inclined surface;

[0045] 50, expansion sleeve; 50a, expansion groove; 50b, first through hole; 51, second inclined surface. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0047] Please refer to the attached Figures 1 to 5 An embodiment of the present application provides a connecting rod centering fixture 100, which is applied to a connecting rod processing device, and is used to position and clamp the connecting rod.

[0048] In an embodiment of the present application, the connecting rod centering fixture 100 includes a base 10, a piston rod 20, a top cap 30, an expansion sleeve seat 40 and an expansion sleeve 50, and the piston rod 20, the top cap 30, the expansion sleeve seat 40 and the expansion sleeve 50 are arranged on one side of the base 10.

[0049] In the embodiment of the present application, the base 10 serves as a supporting component of the connecting rod centering fixture 100 , and is used to support the piston rod 20 , the top cap 30 , the expansion sleeve seat 40 and the expansion sleeve 50 .

[0050] The base 10 is used to be installed on a machine tool so that the base 10 can be fixed to the machine tool, thereby facilitating the connecting rod centering fixture 100 to be fixed to the connecting rod processing device through the base 10 .

[0051] In an embodiment of the present application, the piston rod 20 is movably installed on the base 10 and moves along the extension direction of the base 10. At this time, the piston rod 20 is arranged on the inner side of the base 10, and the piston rod 20 is movably installed on the base 10 and moves along the extension direction of the base 10, so as to facilitate the adjustment of the position of the piston rod 20 relative to the base 10, thereby facilitating the adjustment of the height of the piston rod 20 relative to the base 10.

[0052] The base 10 is provided with an oil circuit 12 and an oil chamber 13, the oil chamber 13 is connected to the oil circuit 12, and the oil circuit 12 is used to connect the oil inlet end or the oil outlet end of the machine tool; one end of the piston rod 20 is in the oil chamber 13, and is driven by the oil in the oil chamber 13 and the oil circuit 12, so that the piston rod 20 moves relative to the base 10. At this time, the oil chamber 13 is on the upper side of the oil circuit 12, and the oil chamber 13 is connected to the oil circuit 12, so that the oil enters the oil chamber 13 through the oil circuit 12, and the oil circuit 12 is used to When docking with the oil outlet end of the machine tool, the oil output by the machine tool enters the oil chamber 13 through the oil circuit 12. When docking with the oil inlet end of the machine tool, the oil in the oil chamber 13 enters the oil inlet end of the machine tool through the oil circuit 12. One end of the piston rod 20 is in the oil chamber 13 and is driven by the oil in the oil chamber 13 and the oil circuit 12, so that the piston rod 20 moves relative to the base 10, so as to improve the smoothness of movement of the piston rod 20 relative to the base 10.

[0053] The base 10 is provided with a piston hole 14, and an oil chamber 13 is partially formed in the piston hole 14; the piston rod 20 can movably penetrate the piston hole 14, so that the piston rod 20 can move with the base 10 through the piston hole 14, and the piston rod 20 is connected with a sealing ring 21, which is sleeved on the piston rod 20 and is sealed with the inner wall of the piston hole 14 through the sealing ring 21 to prevent the oil in the oil chamber 13 from flowing through the piston hole 14 to the external environment.

[0054] The piston rod 20 is connected to a guide ring 22, which is embedded in the inner wall of the piston hole 14 and is sleeved on the outside of the piston rod 20 to guide the movement of the piston rod 20. At this time, the guide ring 22 is between the piston rod 20 and the base 10, and the guide ring 22 is fixed to the piston rod 20. The guide ring 22 is embedded in the inner wall of the piston hole 14 and is sleeved on the outside of the piston rod 20 to guide the movement of the piston rod 20, so that the piston rod 20 can move relative to the piston hole 14 under the guiding action of the guide ring 22, thereby improving the smoothness of movement of the piston rod 20 relative to the base 10.

[0055] A guide groove 141 is provided on the lower side wall of the piston hole 14; a guide pin 23 is connected to one end of the piston rod 20, and the guide pin 23 is inserted into the guide groove 141 and is guidedly connected to the guide groove 141. At this time, the inner contour of the guide groove 141 and the outer contour of the guide pin 23 are clearance-matched, and the guide pin 23 is fixed to the bottom of the piston rod 20, and the guide pin 23 is inserted into the guide groove 141 and is guidedly connected to the guide groove 141, so that the piston rod 20 can be guided and moved with the base 10 through the guide pin 23, thereby further improving the smoothness of movement of the piston rod 20 relative to the base 10.

[0056] In the embodiment of the present application, the top cap 30 is located on the outside of the base 10, the top cap 30 is connected to the piston rod 20, and moves with the movement of the piston rod 20. At this time, the top cap 30 is located on the outside of the base 10, the top cap 30 is connected to the piston rod 20, so that the top cap 30 is fixed to the piston rod 20, and the top cap 30 moves with the movement of the piston rod 20, so as to adjust the position of the top cap 30 relative to the base 10.

[0057] In the embodiment of the present application, the expansion sleeve seat 40 is installed on the base 10 and is penetrated by the piston rod 20; the expansion sleeve 50 is located between the top cap 30 and the expansion sleeve seat 40, and is beveled with the expansion sleeve seat 40. At this time, the expansion sleeve seat 40 is arranged on the upper side of the base 10, and the expansion sleeve seat 40 is installed on the base 10 and is penetrated by the piston rod 20, so that the expansion sleeve seat 40 is fixed on the upper side of the base 10, and the expansion sleeve 50 is located on the upper side of the expansion sleeve seat 40. When the piston rod 20 moves downward, the top cap 30 moves downward under the drive of the piston rod 20, and presses the expansion sleeve 50, so that the expansion sleeve 50 expands outward under the beveled cooperation of the expansion sleeve seat 40, and the expansion sleeve 50 is located in the end hole of the connecting rod, and is used to self-center and clamp the end hole of the connecting rod, thereby improving the positioning and clamping effect of the connecting rod centering clamp 100.

[0058] A cylindrical end 11 is provided at one end of the base 10; an expansion sleeve seat 40 is sleeved on the cylindrical end 11, and an outer wall of one end of the expansion sleeve seat 40 is provided with a first inclined surface 41; an expansion sleeve 50 is arranged above the expansion sleeve seat 40 and is coaxially arranged with the expansion sleeve seat 40; the expansion sleeve 50 is provided with a second inclined surface 51, and the second inclined surface 51 is beveled with the first inclined surface 41, and the expansion sleeve 50 expands outward or retracts as the matching position between the second inclined surface 51 and the first inclined surface 41 is adjusted.

[0059] At this time, the cylindrical end 11 is on the upper side of the base 10, and the expansion sleeve seat 40 is sleeved on the cylindrical end 11 from top to bottom, so that the expansion sleeve seat 40 is fixed to the cylindrical end 11, the first inclined surface 41 is on the outer wall of the expansion sleeve seat 40, and the second inclined surface 51 is on the inner wall of the expansion sleeve 50. The expansion sleeve 50 is arranged above the expansion sleeve seat 40 and is coaxially arranged with the expansion sleeve seat 40. The second inclined surface 51 is beveled with the first inclined surface 41, and the expansion sleeve 50 expands outward or retracts as the matching position between the second inclined surface 51 and the first inclined surface 41 is adjusted. When the top cap 30 moves downward driven by the piston rod 20, the top cap 30 presses the expansion sleeve 50, so that the expansion sleeve 50 expands outward due to the adjustment of the matching position between the second inclined surface 51 and the first inclined surface 41, so that the expansion sleeve 50 can self-center and clamp the end hole of the connecting rod, thereby improving the positioning and clamping effect of the connecting rod centering clamp 100.

[0060] When the top cap 30 moves upward driven by the piston rod 20 , the top cap 30 disengages from the expansion sleeve 50 , so that the expansion sleeve 50 retracts inwardly due to the adjustment of the matching position between the second inclined surface 51 and the first inclined surface 41 , so as to facilitate the expansion sleeve 50 to disengage from the expansion sleeve seat 40 .

[0061] The expansion sleeve 50 is provided with an expansion groove 50a and a first through hole 50b, the expansion groove 50a is connected to the first through hole 50b and allows the expansion sleeve 50 to expand outward; the top cap 30 is penetrated by the first through hole 50b and is gap-connected with the first through hole 50b; the lower side wall of the top cap 30 contacts the upper side wall of the expansion sleeve 50, at this time, the expansion groove 50a is recessed from bottom to top by the expansion sleeve 50, the notch of the expansion sleeve 50 groove faces downward, the first through hole 50b is in the middle of the expansion sleeve 50, the expansion groove 50a is connected to the first through hole 50b and allows the expansion sleeve 50 to expand outward, the top cap 30 is penetrated by the first through hole 50b and is gap-connected with the first through hole 50b; the lower side wall of the top cap 30 contacts the upper side wall of the expansion sleeve 50, so that the top cap 30 presses the expansion sleeve 50 under the drive of the piston rod 20, thereby facilitating the expansion sleeve 50 to expand outward toward the expansion sleeve seat 40.

[0062] The expansion sleeve 50 is made of spring steel, and expands or retracts by deformation of the expansion groove 50a; the outer wall of the expansion sleeve 50 is an annular surface, and is used to contact the center hole at the end of the connecting rod, so that the expansion sleeve 50 can self-center and clamp the end of the connecting rod, thereby improving the clamping effect of the connecting rod centering clamp 100.

[0063] Both ends of the expansion sleeve 50 are provided with chamfers to make the expansion sleeve 50 not sharp to avoid cutting the user. The top cap 30 is connected to a locking gasket 31, and the locking gasket 31 and the top cap 30 clamp the expansion sleeve 50 so that the expansion sleeve 50 is fixed between the locking gasket 31 and the top cap 30.

[0064] In another embodiment, a connecting rod processing device includes a connecting rod centering fixture 100, and the connecting rod centering fixture 100 is a part of the connecting rod processing device, and the connecting rod processing device is used to process the connecting rod.

[0065] Compared with the prior art, the beneficial effects of the utility model are:

[0066] The utility model provides a connecting rod centering fixture 100 and a connecting rod processing device, wherein a base 10 is used to be installed on a machine tool; a piston rod 20 is movably installed on the base 10 and moves along the extension direction of the base 10; a top cap 30 is located on the outer side of the base 10, the top cap 30 is connected to the piston rod 20, and moves with the movement of the piston rod 20; an expansion sleeve seat 40 is installed on the base 10 and is penetrated by the piston rod 20; an expansion sleeve 50 is located between the top cap 30 and the expansion sleeve seat 40, and is beveled with the expansion sleeve seat 40. At this time, when the piston rod 20 moves downward, the top cap 30 moves downward under the drive of the piston rod 20, and presses the expansion sleeve 50, so that the expansion sleeve 50 expands outward under the beveled cooperation of the expansion sleeve seat 40, the expansion sleeve 50 is located in the end hole of the connecting rod, and is used to self-center and clamp the end hole of the connecting rod, thereby improving the positioning and clamping effect of the connecting rod centering fixture 100.

[0067] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0068] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0069] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A connecting rod centering fixture, characterized in that: As a part of the connecting rod processing device, the connecting rod centering fixture comprises: A base for mounting on a machine tool; A piston rod is movably mounted on the base and moves along an extension direction of the base; A top cap is located outside the base, the top cap is connected to the piston rod and moves with the movement of the piston rod; An expansion sleeve seat, mounted on the base and penetrated by the piston rod; An expansion sleeve is located between the top cap and the expansion sleeve seat and is beveled with the expansion sleeve seat; When the piston rod moves downward, the top cap moves downward driven by the piston rod and presses the expansion sleeve, so that the expansion sleeve expands outward with the cooperation of the inclined surface of the expansion sleeve seat. The expansion sleeve is located in the end hole of the connecting rod and is used for self-centering and clamping the end hole of the connecting rod.

2. The connecting rod centering fixture according to claim 1, characterized in that: One end of the base is provided with a cylindrical end; The expansion sleeve seat is sleeved on the cylindrical end, and the outer side wall of one end of the expansion sleeve seat is provided with a first inclined surface; The expansion sleeve is arranged above the expansion sleeve seat and coaxially arranged with the expansion sleeve seat; the expansion sleeve is provided with a second inclined surface, and the second inclined surface is inclinedly matched with the first inclined surface. The expansion sleeve expands outward or retracts as the matching position between the second inclined surface and the first inclined surface is adjusted.

3. The connecting rod centering fixture according to claim 2, characterized in that: The expansion sleeve is provided with an expansion groove and a first through hole, the expansion groove is connected to the first through hole and allows the expansion sleeve to expand outwards; The top cap passes through the first through hole and is gap-connected with the first through hole; the lower side wall of the top cap contacts the upper side wall of the expansion sleeve.

4. The connecting rod centering fixture according to claim 3, characterized in that: The expansion sleeve is made of spring steel, and the expansion sleeve expands or retracts by deformation of the expansion groove; The outer side wall of the expansion sleeve is an annular surface and is used to contact the center hole of the end of the connecting rod.

5. The connecting rod centering fixture according to claim 4, characterized in that: Both ends of the expansion sleeve are provided with chamfers; the top cap is connected with a locking washer, and the locking washer and the top cap clamp the expansion sleeve.

6. The connecting rod centering fixture according to claim 1, characterized in that: The base is provided with an oil circuit and an oil cavity, the oil cavity is connected to the oil circuit, and the oil circuit is used to connect to the oil inlet or oil outlet of the machine tool; One end of the piston rod is located in the oil chamber and is driven by the oil in the oil chamber and the oil circuit, so that the piston rod moves relative to the base.

7. The connecting rod centering fixture according to claim 6, characterized in that: The base is provided with a piston hole, and a portion of the piston hole forms the oil chamber; The piston rod is movably arranged to penetrate the piston hole. The piston rod is connected with a sealing ring and is sealedly connected with the inner side wall of the piston hole through the sealing ring.

8. The connecting rod centering fixture according to claim 7, characterized in that: The piston rod is connected with a guide ring, which is embedded in the inner wall of the piston hole and sleeved outside the piston rod to guide the movement of the piston rod.

9. The connecting rod centering fixture according to claim 8, characterized in that: The lower side wall of the piston hole is provided with a guide groove; One end of the piston rod is connected with a guide pin, and the guide pin is inserted into the guide groove and is guidingly connected with the guide groove.

10. A connecting rod processing device, characterized in that: Comprising a connecting rod centering fixture as claimed in any one of claims 1 to 9.

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