A clamping tool for machining the end surface of a balancing shaft

Abstract

The utility model discloses a clamping tool for machining the end face of a balancing shaft, which relates to the technical field of clamping tool for balancing shafts, and is mainly used to solve the problem that when the existing balancing shaft is subjected to end face machining, it takes a long time to clamp the balancing shaft, and the positioning and clamping accuracy of the balancing shaft is low. Its main structure is: it includes a shaft placement platform, two shaft support blocks are arranged on the top of the shaft placement platform, and the tops of the two shaft support blocks are both provided with V-shaped grooves, and the opposite surfaces of the two shaft support blocks are provided with axial fixing components that can limit the axial movement of the balancing shaft, and a radial clamping component that can press the balancing shaft downward is also provided above the V-shaped groove. The utility model provides a clamping tool for machining the end face of a balancing shaft, which can greatly reduce the clamping time and ensure the positioning and clamping accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of balancing shaft clamping tooling, in particular to a clamping tooling for balancing shaft end surface processing. Background Art

[0002] The balance shaft technology is a widely used technology in engines. Specifically, the balance shaft is a shaft equipped with an eccentric counterweight and rotates synchronously with the crankshaft. It uses the reverse vibration force generated by the eccentric counterweight to make the engine well balanced and reduce the vibration of the engine.

[0003] At present, after the balance shaft is cast into a blank, the end faces and center holes at both ends need to be processed. When processing the center hole and end faces at both ends of the balance shaft, a three-jaw chuck is usually used to clamp and position the balance shaft; then, the end face and center hole of one end of the balance shaft are processed first, and then the balance shaft is removed from the three-jaw chuck and re-clamped and positioned, and then the end face, center hole and pin hole of the other end of the balance shaft are processed.

[0004] However, due to the complex structure of the three-jaw chuck, the positioning and clamping operations of the balancing shaft are also complex, the angular repeat positioning accuracy is low, and at least two clamping operations are required during the entire processing process. Therefore, the entire processing process requires a longer balancing shaft clamping time, and the positioning and clamping accuracy of the balancing shaft is also low. Utility Model Content

[0005] The utility model aims to provide a clamping tool for machining the end surface of a balancing shaft, which can greatly reduce the clamping time and ensure the positioning and clamping accuracy.

[0006] The utility model solves the above-mentioned technical problem through a technical solution: a clamping tool for machining the end face of a balancing shaft, comprising a shaft placing platform, two shaft supporting blocks arranged in sequence along the extension direction of the balancing shaft are arranged on the top of the shaft placing platform, the tops of the two shaft supporting blocks are both provided with a V-shaped groove, and an axial fixing component capable of limiting the axial movement of the balancing shaft is provided on the opposite surfaces of the two shaft supporting blocks, and a radial clamping component capable of pressing the balancing shaft downward is also provided above the V-shaped groove.

[0007] As a further improvement of the utility model, the axial fixing assembly includes a clamping block and a top plate, the clamping block is arranged on one of the shaft support blocks, and the top plate is arranged on the other shaft support block, and a floating push rod is floatingly inserted on the surface of the clamping block facing the top plate.

[0008] As a further improvement of the utility model, the radial clamping assembly includes a pressure strip whose extension direction is perpendicular to the extension direction of the balance shaft, one end of the pressure strip is hinged to a pressure strip mounting seat installed on the top of the shaft placement platform, and the other end is hinged to a pressure strip locking block, a locking boss is provided under the pressure strip locking block, and a locking pressure block is provided on the top of the locking boss, which can lock the pressure strip locking block on the locking boss.

[0009] As a further improvement of the utility model, there are two pressure strips and the two pressure strips are arranged in sequence along the extension direction of the balance axis, and the same end of the two pressure strips is hinged to a pressure strip mounting seat respectively, and the other end is hinged to the same pressure strip locking block.

[0010] As a further improvement of the utility model, a side pressure screw mounting seat is also provided on the top of the shaft placing platform between the two pressure strip mounting seats, and a side pressure angular positioning screw is threadedly installed on the top of the side pressure screw mounting seat, the extension direction of which is perpendicular to the extension direction of the balance shaft.

[0011] As a further improvement of the present invention, a first mounting groove and a second mounting groove are provided on the top of the shaft placing platform along the extension direction of the balance shaft. The shaft support block is slidably installed in the first mounting groove by means of a mounting slider arranged on its lower surface, and the pressure strip mounting seat and the side pressure screw mounting seat are both slidably installed in the second mounting groove by means of a mounting slider arranged on their lower surfaces.

[0012] As a further improvement of the present invention, the first mounting groove and the second mounting groove are T-shaped grooves, the mounting slide is a T-shaped slide, and the shaft support block, the pressure strip mounting seat and the side pressure screw mounting seat are all vertically penetrated by a locking screw whose lower end cooperates with the thread of the mounting slide.

[0013] As a further improvement of the present invention, there are two first installation grooves.

[0014] As a further improvement of the present invention, a locking bolt is provided on the top of the locking pressure block, which vertically penetrates the locking pressure block downward and is threadedly connected to the locking boss.

[0015] As a further improvement of the present invention, the bottom of the locking boss is connected to a boss base.

[0016] Beneficial Effects

[0017] Compared with the prior art, the advantages of the clamping tool for machining the end face of a balancing shaft of the utility model are:

[0018] 1. In the tooling, two V-shaped grooves can support the balancing shaft from the bottom of both sides of the balancing shaft. After the balancing shaft is clamped, the tooling can process the end faces and center holes at both ends of the balancing shaft without secondary reversing clamping. Compared with the existing three-jaw chuck that requires at least two clamping operations during the entire processing process, the tooling can greatly save the clamping time of the balancing shaft during the entire processing process, thereby improving the processing and production efficiency of the balancing shaft.

[0019] 2. Through the cooperation between the axial fixing component, the radial clamping component and the side pressure angular positioning screw, the tooling can limit the balancing shaft axially, radially and angularly when clamping the balancing shaft, avoiding the movement of the balancing shaft during the processing of the end face and the center hole, thereby ensuring the positioning and clamping accuracy, and further ensuring the product quality of the balancing shaft.

[0020] 3. The side pressure angular positioning screw can be used for angular fine adjustment, further improving the angle adjustment capability of the pin hole angular processing.

[0021] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional diagram of the utility model;

[0024] Figure 2 It is a usage state diagram of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the shaft support block and the side pressure screw mounting seat of the utility model;

[0026] Figure 4 This is an installation structure diagram of the shaft support block with a tightening block installed in the utility model;

[0027] Figure 5 It is an installation structure diagram of an axle support block with a top plate installed in the utility model.

[0028] Among them: 1-axis placement platform; 11-first installation groove; 12-second installation groove; 13-installation slider; 2-axis support block; 21-V-shaped groove; 3-tightening block; 31-floating push rod; 4-top plate; 5-pressure strip mounting seat; 51-pressure strip; 52-pressure strip locking block; 6-locking boss; 61-locking pressure block; 62-locking bolt; 63-boss base; 7-side pressure screw mounting seat; 71-side pressure angular positioning screw. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0032] Example

[0033] The specific implementation of the utility model is as follows Figure 1-5 As shown, a clamping tool for machining the end face of a balancing shaft comprises a shaft placing platform 1. Two shaft support blocks 2 are arranged in sequence along the extending direction of the balancing shaft on the top of the shaft placing platform 1. A V-shaped groove 21 is provided on the top of the two shaft support blocks 2. An axial fixing component capable of limiting the axial movement of the balancing shaft is provided on the opposite surfaces of the two shaft support blocks 2, and a radial clamping component capable of pressing the balancing shaft downward is also provided above the V-shaped groove 21.

[0034] When in use, first place the two sides of the balancing shaft horizontally in the two V-grooves 21, and clamp the eccentric weight of the balancing shaft in the axial direction of the balancing shaft through the axial fixing component, so that the tooling can realize the positioning and clamping of the balancing shaft in the axial direction. Then, the balancing shaft is pressed downward by the radial pressing component, and the V-shaped structure of the V-groove 21 is matched to realize the positioning and clamping of the balancing shaft by the tooling in the radial direction, so that the positioning and clamping of the balancing shaft can be completed. After that, the end faces and the center hole at both ends of the balancing shaft can be processed.

[0035] In the tooling, the two V-shaped grooves 21 can support the balancing shaft from below on both sides of the balancing shaft. Therefore, after the tooling completes the clamping of the balancing shaft, the end faces and the center hole at both ends of the balancing shaft can be processed without secondary reversing clamping. Compared with the existing three-jaw chuck that requires at least two clamping operations during the entire processing process, the tooling can greatly save the clamping time of the balancing shaft during the entire processing process, thereby improving the processing and production efficiency of the balancing shaft. In addition, through the cooperation between the axial fixing component and the radial clamping component, the tooling can limit the balancing shaft axially and radially when clamping the balancing shaft, avoiding the movement of the balancing shaft during the processing of the end face and the center hole, thereby ensuring the positioning and clamping accuracy, and further ensuring the product quality of the balancing shaft.

[0036] In the tooling, the axial fixing assembly includes a clamping block 3 and a top plate 4. The top plate 4 is arranged vertically. The clamping block 3 is arranged on one of the shaft support blocks 2, and the top plate 4 is arranged on the other shaft support block 2. A floating push rod 31 is floatingly inserted on the surface of the clamping block 3 facing the top plate 4. In this embodiment, the floating push rod 31 is inserted into the rod body in the clamping block 3 and sleeved with a compression spring, one end of the compression spring is in tight contact with the bottom of the socket on the clamping block 3, and the other end is in tight contact with the raised portion on the push rod 31. Through the top plate 4 and the floating push rod 31, the eccentric counterweight of the balancing shaft is clamped in the axial direction of the balancing shaft, so that the tooling can realize the positioning and clamping of the balancing shaft in the axial direction.

[0037] As for the radial clamping assembly of the tooling, it includes a pressure strip 51 whose extension direction is perpendicular to the extension direction of the balancing shaft. One end of the pressure strip 51 is hinged to the pressure strip mounting seat 5 installed on the top of the shaft placement platform 1, and the other end is hinged to the pressure strip locking block 52. A locking boss 6 is provided below the pressure strip locking block 52, and a locking pressure block 61 that can lock the pressure strip locking block 52 on the locking boss 6 is provided on the top of the locking boss 6. In this embodiment, a locking bolt 62 that vertically penetrates the locking pressure block 61 downward and is threadedly connected to the locking boss 6 is provided on the top of the locking pressure block 61. A boss base 63 is connected to the bottom of the locking boss 6. When in use, by tightening the locking bolt 62, the pressure strip locking block 52 can be fixed between the locking boss 6 and the locking pressure block 61, so that the pressure strip 51 can press down the shaft body of the balancing shaft, and then cooperate with the V-shaped groove 21 to achieve the positioning and clamping of the balancing shaft in the radial direction.

[0038] At the same time, in order to stably hold down the balancing shaft, there are two pressure strips 51 in this embodiment, and the two pressure strips 51 are arranged in sequence along the extending direction of the balancing shaft. The same end of the two pressure strips 51 is respectively hinged to a pressure strip mounting seat 5, and the other end is hinged to the same pressure strip locking block 52. Such a design can cooperate with the two V-shaped grooves 21 to position and clamp the balancing shaft from both sides of the balancing shaft, thereby improving the positioning and clamping accuracy.

[0039] In addition, a side pressure screw mounting seat 7 is also provided on the top of the shaft placement platform 1 between the two pressure strip mounting seats 5. A side pressure angular positioning screw 71 whose extension direction is perpendicular to the extension direction of the balancing shaft is threadedly installed on the top of the side pressure screw mounting seat 7. The eccentric counterweight of the balancing shaft can be further supported by the side pressure angular positioning screw 71, thereby further improving the positioning and clamping accuracy.

[0040] In addition, it is important to note that:

[0041] The top of the shaft placement platform 1 is provided with a first mounting groove 11 and a second mounting groove 12 arranged along the extension direction of the balancing shaft. Among them, there are two first mounting grooves 11. The shaft support block 2 is slidably installed in the first mounting groove 11 through a mounting slider 13 arranged on its lower surface. The pressure strip mounting seat 5 and the side pressure screw mounting seat 7 are both slidably installed in the second mounting groove 12 through a mounting slider 13 arranged on their lower surface. Such a design can facilitate fine-tuning of the positions of the shaft support block 2, the pressure strip mounting seat 5 and the side pressure screw mounting seat 7, so that the tooling can adapt to the positioning and clamping work of balancing shafts of various sizes.

[0042] In this embodiment, the first mounting groove 11 and the second mounting groove 12 are T-shaped grooves, and the mounting slide block 13 is a T-shaped slide block. The shaft support block 2, the pressure strip mounting seat 5, and the side pressure screw mounting seat 7 are vertically penetrated with a locking screw whose lower end is threadedly matched with the mounting slide block 13. By screwing the locking screw, the positions of the shaft support block 2, the pressure strip mounting seat 5, and the side pressure screw mounting seat 7 can be fine-tuned and then the positions of the three can be locked.

[0043] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A clamping tool for machining the end surface of a balancing shaft, characterized in that: The invention comprises a shaft placement platform (1), wherein the top of the shaft placement platform (1) is provided with two shaft support blocks (2) arranged in sequence along the extension direction of the balance shaft, the tops of the two shaft support blocks (2) are both provided with V-shaped grooves (21), the opposite surfaces of the two shaft support blocks (2) are provided with axial fixing components capable of limiting the axial movement of the balance shaft, and a radial clamping component capable of pressing the balance shaft downward is also provided above the V-shaped groove (21).

2. The clamping tool for processing the end surface of the balance shaft according to claim 1, characterized in that: The axial fixing assembly comprises a tightening block (3) and a top plate (4); the tightening block (3) is arranged on one of the shaft support blocks (2), and the top plate (4) is arranged on the other shaft support block (2); a floating ejector rod (31) is floatingly inserted on the surface of the tightening block (3) on a side facing the top plate (4).

3. The clamping tool for processing the end surface of the balance shaft according to claim 1 or 2, characterized in that: The radial clamping assembly comprises a pressure strip (51) whose extension direction is perpendicular to the extension direction of the balance shaft, one end of the pressure strip (51) is hinged to a pressure strip mounting seat (5) mounted on the top of the shaft placement platform (1), and the other end is hinged to a pressure strip locking block (52), a locking boss (6) is provided below the pressure strip locking block (52), and a locking pressure block (61) is provided on the top of the locking boss (6) for locking the pressure strip locking block (52) on the locking boss (6).

4. The clamping tool for processing the end surface of the balance shaft according to claim 3, characterized in that: There are two pressure strips (51) and the two pressure strips (51) are arranged in sequence along the extension direction of the balance axis. The same end of the two pressure strips (51) is respectively hinged to a pressure strip mounting seat (5), and the other end is hinged to the same pressure strip locking block (52).

5. The clamping tool for processing the end surface of the balance shaft according to claim 4, characterized in that: A side pressure screw mounting seat (7) is also provided on the top of the shaft placement platform (1) between the two pressure strip mounting seats (5), and a side pressure angular positioning screw (71) is threadedly mounted on the top of the side pressure screw mounting seat (7) and has an extension direction perpendicular to the extension direction of the balance shaft.

6. The clamping tool for machining the end surface of the balance shaft according to claim 5, characterized in that: The top of the shaft placement platform (1) is provided with a first mounting groove (11) and a second mounting groove (12) which are arranged along the extension direction of the balance shaft; the shaft support block (2) is slidably mounted in the first mounting groove (11) via a mounting slide block (13) arranged on its lower surface; and the pressure strip mounting seat (5) and the side pressure screw mounting seat (7) are both slidably mounted in the second mounting groove (12) via a mounting slide block (13) arranged on their lower surfaces.

7. The clamping tool for processing the end surface of the balance shaft according to claim 6, characterized in that: The first mounting groove (11) and the second mounting groove (12) are T-shaped grooves, the mounting slide block (13) is a T-shaped slide block, and the shaft support block (2), the pressure strip mounting seat (5) and the side pressure screw mounting seat (7) are all vertically penetrated by a locking screw whose lower end is threadedly matched with the mounting slide block (13).

8. The clamping tool for machining the end surface of the balance shaft according to claim 7, characterized in that: There are two first installation grooves (11).

9. The clamping tool for processing the end surface of the balance shaft according to claim 3, characterized in that: A locking bolt (62) is provided on the top of the locking pressing block (61) and vertically penetrates the locking pressing block (61) downward and is threadedly connected to the locking boss (6).

10. The clamping tool for processing the end surface of the balance shaft according to claim 9, characterized in that: The bottom of the locking boss (6) is connected to a boss base (63).

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