Balance shaft shell plate spring positioning tool

Abstract

The utility model relates to a balance shaft shell plate spring positioning tool, which belongs to the technical field of balance shaft shell processing and comprises a workbench, a front positioning block and a rear positioning block are respectively mounted at two ends of the upper surface of the workbench, the front positioning block is mounted on an L-shaped base through a vertically mounted first threaded rod, and the inner side end of the front positioning block is a cambered surface. An arc-shaped groove is formed in the lower edge of the center of the inner side end, a first round through hole allowing a first threaded rod to penetrate through is formed in the upper surface of the front positioning block, the first round through hole communicates with the second round through hole, and a first fixing nut is installed on the first threaded rod; the rear positioning blocks are fixed to the left side and the right side of the rear installation base through horizontally-installed second threaded rods, the rear positioning blocks are vertically provided with inserting grooves used for allowing the second threaded rods to penetrate through, second fixing nuts are installed on the second threaded rods, and horizontal limiting blocks are arranged between the rear positioning blocks and the rear installation base and fixed to the workbench through bolts. According to the utility model, the modular design is adopted, the balance shaft housing can be stably positioned, and the disassembly and the assembly are convenient.

Description

Technical Field

[0001] This utility model relates to the field of balance shaft housing processing technology, and in particular to a balance shaft housing leaf spring positioning fixture. Background Technology

[0002] The precise positioning and assembly of the balance shaft housing leaf spring is of paramount importance. As a key component of the vehicle's transmission system, the installation accuracy of the balance shaft housing directly affects the vehicle's stability and safety. The leaf spring, on the other hand, plays a crucial role in the vehicle's shock absorption and load-bearing capacity. Its precise connection with the balance shaft housing has a significant impact on the overall performance of the vehicle.

[0003] During production, the balance shaft housing needs to be fixed on the operating table and machined using automated milling and drilling equipment. Therefore, a positioning fixture is required. Existing positioning fixtures have poor versatility and are only applicable to specific models of balance shaft housing leaf springs. Furthermore, to increase the stability of the balance shaft housing during machining, the positioning fixture is usually quite heavy, and replacing it increases time costs.

[0004] Based on this, this utility model designs a balance shaft shell leaf spring positioning fixture to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a positioning fixture for a balance shaft shell leaf spring, which is accurate in positioning, easy to operate, simple in structure, safe and reliable, and can solve the problems in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] The balance shaft housing leaf spring positioning fixture includes a worktable. A front positioning block and a rear positioning block are respectively installed at both ends of the upper surface of the worktable. The front positioning block is mounted on an L-shaped base via a vertically installed first threaded rod. The inner end of the front positioning block is arc-shaped, and an arc-shaped groove is opened at the lower edge of the center of the inner end. A first circular through hole for the first threaded rod to pass through is opened on the upper surface of the front positioning block. The first circular through hole communicates with a second circular through hole. A first fixing nut is installed on the first threaded rod. The rear positioning block is fixed to the left and right sides of the rear mounting base via a horizontally installed second threaded rod. A slot for the second threaded rod to pass through is opened vertically on the rear positioning block. A second fixing nut is installed on the second threaded rod. A horizontal limiting block is provided between the rear positioning block and the rear mounting base. The horizontal limiting block is fixed to the worktable by bolts.

[0008] A fixed pad is placed on the worktable, directly below the front positioning block; a cylindrical limit block is horizontally fixed in the center of the rear mounting base.

[0009] The first threaded rod is fixed on the lower contact surface of the L-shaped base. A stepped limiting groove is opened on the edge of the upper contact surface of the L-shaped base near the first threaded rod. The outer end of the front positioning block is flat and is mounted on the stepped limiting groove.

[0010] The diameter of the first circular through hole is greater than the diameter of the first threaded rod, and the diameter of the second circular through hole is greater than the diameter of the first fixing nut; the minimum distance between the first circular through hole and the second circular through hole is greater than the diameter of the first threaded rod and less than the diameter of the first fixing nut.

[0011] The L-shaped base is fixed on the front mounting base, and the counterweights are fixed to both sides of the L-shaped base with bolts.

[0012] Mounting edges extend from both sides of the rear mounting base. Horizontal holes for the second threaded rod to pass through are opened on the mounting edges. A horizontal adjusting block is installed on the front side of the mounting edge. Several third circular through holes are horizontally provided on the horizontal adjusting block. The diameter of the third circular through holes is larger than the diameter of the second threaded rod and smaller than the diameter of the second fixing nut.

[0013] The minimum width of the slot is greater than the diameter of the second threaded rod but less than the diameter of the second fixing nut.

[0014] The front mounting base is circular and is fixed to the worktable with bolts. The worktable is circular and mounted on the turntable.

[0015] The present invention has the following advantages: The present invention adopts a modular design, which can be disassembled as a whole or in parts; the key positioning components can be adjusted according to the size of different models of balance shaft housings. After adjustment, the balance shaft housing can be removed without frequent tightening of bolts, which is convenient and quick. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the isometric projection of this utility model in the southwest region;

[0018] Figure 2 This is a schematic diagram of the southeast isometric structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the assembly structure of this utility model;

[0020] Figure 4 This is a side view of the structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the front positioning block structure of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Workbench; 2. Turntable; 3. Front positioning block; 31. Second circular through hole; 32. First circular through hole; 33. Outer end; 34. Inner end; 35. Arc-shaped groove; 4. Rear positioning block; 41. Slot; 42. Horizontal limit block; 5. L-shaped base; 51. First threaded rod; 52. Stepped limit groove; 53. First fixing nut; 6. Front mounting base; 61. Counterweight block; 7. Rear mounting base; 70. Mounting edge; 71. Second threaded rod; 72. Waist hole; 73. Second fixing nut; 74. Horizontal adjustment block; 741. Third circular through hole; 8. Pad; 9. Cylindrical limit block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It should be understood that the terms "upper", "middle", "outer", "inner", "lower" etc., which indicate orientation or positional relationship, are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0025] The attached figures illustrate specific embodiments of this utility model, such as... Figures 1-5 As shown, this utility model is a positioning fixture for a balance shaft shell leaf spring, including a worktable 1. A front positioning block 3 and a rear positioning block 4 are respectively installed at both ends of the upper surface of the worktable 1. The front positioning block 3 is installed on an L-shaped base 5 via a vertically installed first threaded rod 51. The inner end 34 of the front positioning block 3 is an arc surface, and an arc-shaped groove 35 is opened at the lower edge of the center of the inner end 34. A first circular through hole 32 for the first threaded rod 51 to pass through is opened on the upper surface of the front positioning block 3. The first circular through hole 32 communicates with a second circular through hole 31. A first fixing nut 53 is installed on the first threaded rod 51. The rear positioning block 4 is fixed to the left and right sides of the rear mounting base 7 via a horizontally installed second threaded rod 71. A slot 41 for the second threaded rod 71 to pass through is opened vertically on the rear positioning block 4. A second fixing nut 73 is installed on the second threaded rod 71. A horizontal limiting block 42 is provided between the rear positioning block 4 and the rear mounting base 7. The horizontal limiting block 42 is fixed to the worktable 1 by bolts.

[0026] A fixed pad 8 is placed on the worktable 1, and the pad 8 is located directly below the front positioning block 3; a cylindrical limit block 9 is horizontally fixed in the center of the rear mounting base 7. The pad 8 and the horizontal adjustment block 74 work together to raise the balance shaft housing.

[0027] The first threaded rod 51 is fixed to the lower contact surface of the L-shaped base 5. A stepped limiting groove 52 is formed on the edge of the upper contact surface of the L-shaped base 5 near the first threaded rod 51. The outer end 33 of the front positioning block 3 is flat and is mounted on the stepped limiting groove 52. The diameter of the first circular through hole 32 is larger than the diameter of the first threaded rod 51, and the diameter of the second circular through hole 31 is larger than the diameter of the first fixing nut 53. The minimum distance between the connection points of the first circular through hole 32 and the second circular through hole 31 is greater than the diameter of the first threaded rod 51 and less than the diameter of the first fixing nut 53. Therefore, in use, the front positioning block 3 can be moved horizontally to remove the first threaded rod 51 and the first fixing nut 53 directly from the second circular through hole 31, saving the step of disassembling the first fixing nut 53.

[0028] The L-shaped base 5 is fixed on the front mounting base 6, and the counterweights 61 are fixed on both sides of the L-shaped base 5 by bolts.

[0029] Mounting edges 70 extend from both sides of the rear mounting base 7. Horizontal slots 72 are formed on the mounting edges 70 for the second threaded rods 71 ​​to pass through. A horizontal adjusting block 74 is mounted on the front side of the mounting edges 70. The horizontal adjusting block 74 has several horizontally arranged third circular through holes 741. The diameter of each third circular through hole 7411 is larger than the diameter of the second threaded rod 71 but smaller than the diameter of the second fixing nut 73. The horizontal adjusting block 74 can adjust the distance between the two second threaded rods 71 ​​in the horizontal direction, making it suitable for balance shaft housings of different sizes.

[0030] The minimum width of slot 41 is greater than the diameter of the second threaded rod 71 but less than the diameter of the second fixing nut 73. The length of the horizontal limiting block 42 is determined according to the thickness of the balance shaft housing base. In use, the positioning block 4 can be directly inserted and removed vertically, saving the step of disassembling the second fixing nut 73.

[0031] The front mounting base 6 is circular and is fixed to the worktable 1 by bolts. The worktable 1 is circular and is mounted on the electric turntable 2 for easy rotation operation.

[0032] The usage method of this embodiment is as follows:

[0033] In actual use, the balance shaft housing is placed on the workbench 1, the lower edge of the balance shaft end is placed on the pad block 8, the front positioning block 3 is locked on its outer edge, the base end is locked on the horizontal adjustment block 74, the rear positioning block 4 is clamped at both ends, and the cylindrical limit block 9 is locked on the semi-circular groove on the base. After adjusting the distance between the front positioning block 3 and the rear positioning block 4 by the first threaded rod 51 and the second threaded rod 71, there is no need to tighten the bolts when using it. The front and rear positioning blocks can be quickly inserted and removed by only the second circular through hole 31 and the slot 41. This can accurately and stably position the balance shaft housing and improve assembly efficiency.

[0034] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to specific implementation methods.

Claims

1. A balancing shaft shell plate spring positioning tool comprising a worktable (1), characterized in that: The workbench (1) is provided with a front positioning block (3) and a rear positioning block (4) at two ends of the upper surface of the workbench (1), the front positioning block (3) is installed on the L-shaped base (5) through a vertically installed first threaded rod (51), the inner side end (34) of the front positioning block (3) is arc-shaped, an arc-shaped groove (35) is formed in the central lower edge of the inner side end (34), a first circular through hole (32) for passing through the first threaded rod (51) is formed in the upper surface of the front positioning block (3), the first circular through hole (32) is communicated with a second circular through hole (31), and a first fixed nut (53) is installed on the first threaded rod (51); the rear positioning block (4) is fixed on the left and right sides of the rear mounting seat (7) through a horizontally installed second threaded rod (71), an insertion slot (41) for passing through the second threaded rod (71) is vertically formed in the rear positioning block (4), a second fixed nut (73) is installed on the second threaded rod (71), and a horizontal limiting block (42) is arranged between the rear positioning block (4) and the rear mounting seat (7) and is fixed on the workbench (1) through a bolt.

2. The balance shaft shell plate spring positioning fixture of claim 1, wherein: A pad block (8) is fixed on the workbench (1) and located directly below the front positioning block (3); and a cylindrical limiting block (9) is horizontally fixed in the central part of the rear mounting seat (7).

3. The balance shaft shell plate spring positioning fixture of claim 1, wherein: The first threaded rod (51) is fixed on the lower contact surface of the L-shaped base (5), a stepped limiting groove (52) is formed in the edge of the upper contact surface of the L-shaped base (5) close to the first threaded rod (51), and the outer side end (33) of the front positioning block (3) is flat and arranged on the stepped limiting groove (52).

4. The balance shaft shell plate spring positioning fixture of claim 1, wherein: The diameter of the first circular through hole (32) is greater than the diameter of the first threaded rod (51), and the diameter of the second circular through hole (31) is greater than the diameter of the first fixed nut (53); and the minimum distance between the communication part of the first circular through hole (32) and the second circular through hole (31) is greater than the diameter of the first threaded rod (51) and less than the diameter of the first fixed nut (53).

5. The balance shaft shell plate spring positioning fixture of claim 1, wherein: The L-shaped base (5) is fixed on the front mounting base (6), and the two sides of the L-shaped base (5) are fixed with counterweight blocks (61) through bolts.

6. The balance shaft shell plate spring positioning fixture of claim 1, wherein: The rear mounting seat (7) is provided with mounting rails (70) extending from the two sides of the rear mounting seat (7), the mounting rails (70) are provided with waist holes (72) for passing through the second threaded rod (71) and are provided with horizontal adjusting blocks (74) on the front sides of the mounting rails (70), a plurality of third circular through holes (741) are horizontally arranged on the horizontal adjusting blocks (74), the diameter of the third circular through holes (741) is greater than the diameter of the second threaded rod (71) and less than the diameter of the second fixed nut (73).

7. The balance shaft shell plate spring positioning fixture of claim 1, wherein: The minimum width of the insertion slot (41) is greater than the diameter of the second threaded rod (71) and less than the diameter of the second fixed nut (73).

8. The balance shaft shell plate spring positioning fixture of claim 1, wherein: The front mounting base (6) is circular and is fixed on the workbench (1) through bolts, the workbench (1) is circular and is installed on the turntable (2).

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