Balancing shaft machining clamp

Abstract

The utility model discloses a kind of clamps for balanced shaft processing, it is related to balanced shaft processing technical field, including bottom plate, the top of the bottom plate is fixed with support plate, the side of the support plate is fixed with two groups of V-shaped block, the side of the support plate is provided with U-shaped block, the inner wall of the U-shaped block is clamped with balanced shaft body, the utility model has beneficial effect as follows: by V-shaped block and U-shaped block cooperation, balanced shaft body can be positioned, provide stable basis for subsequent fixation, by cylinder drive fixed block and mounting frame movement, can quickly adjust fixed component position, by the gear rod design of two groups of intermeshing, when a group of gear rod rotates, another group synchronously reversely rotates, can drive clamping arm to open and close stably under the action of connecting rod, realize the clamping and loosening of balanced shaft, it is convenient and efficient to operate, effectively improve processing efficiency, and can guarantee the balance and stability of clamping, improve processing quality.

Description

Technical Field

[0001] This utility model relates to the field of balance shaft machining technology, and in particular to a jig for balance shaft machining. Background Technology

[0002] The balance shaft is a key component in an engine used to reduce vibration. It typically consists of a shaft that rotates synchronously with the crankshaft, on which a counterweight of equal mass is mounted. When the engine is running, the crankshaft's rotation generates periodic vibrations, while the balance shaft, through the centrifugal force generated by its counter-rotation, effectively counteracts some of the crankshaft's vibration energy, thereby reducing overall engine vibration and noise. Balance shafts are often used in inline multi-cylinder or three-cylinder engines, which are prone to significant vibrations. They can significantly improve driving comfort, reduce wear on components caused by vibration, and extend engine life. Their design needs to be matched to the engine's vibration characteristics to ensure optimal vibration reduction.

[0003] In the field of automotive engine mechanical manufacturing, the balance shaft is one of the key components. Its function is to counteract the vibrations generated during engine operation and improve the smoothness and comfort of engine operation. Therefore, the processing quality requirements for the balance shaft are extremely high. In the processing of the balance shaft, the fixture plays a crucial role. However, the positioning and clamping methods in the existing balance shaft processing fixtures are relatively simple, usually relying only on simple positioning blocks and bolts for fixation. It is difficult to ensure the stable positioning and clamping of the balance shaft during processing. When facing balance shafts of different specifications and shapes, the existing fixtures lack flexibility and versatility, often requiring frequent fixture changes or complex adjustments. This not only increases production costs but also reduces production efficiency. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A jig for machining a balance shaft includes a base plate, a support plate fixed to the top of the base plate, two sets of V-blocks fixed to one side of the support plate, a U-block provided on one side of the support plate, a balance shaft body clamped to the inner wall of the U-block, and two sets of support members provided on the other side of the U-block.

[0007] A cylinder is installed on one side of the support plate, a fixing block is fixed to the piston rod of the cylinder, a mounting bracket is installed on one side of the fixing block, and a fixing component is provided inside the mounting bracket;

[0008] The fixing assembly includes two sets of gear rods that rotate on the inner wall of the mounting frame. The two sets of gear rods are symmetrically designed and mesh with each other. One end of each gear rod is rotatably connected to a clamping arm. The inner wall of the mounting frame is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the outer side of the clamping arm.

[0009] As a preferred embodiment of the balance shaft machining fixture of this utility model, the support member includes two sets of fixing plates installed on one side of the U-shaped block, a scissor frame is provided on one side of the fixing plate, and rollers are rotatably connected to the inner wall of the scissor frame.

[0010] As a preferred embodiment of the balance shaft machining fixture of this utility model, the inner wall of the mounting frame is rotatably connected to a transmission gear, and the outer side of the transmission gear is meshed with the outer side of the gear rod, and a rocker arm is fixed at the axis of the transmission gear.

[0011] As a preferred embodiment of the balance shaft machining fixture of this utility model, a slide rail is installed on one side of the fixed plate, a movable block is slidably connected to the outer side of the slide rail, and the outer side of the movable block is rotatably connected to the inner wall of the scissor frame.

[0012] As a preferred embodiment of the balance shaft machining fixture of the present invention, two sets of guide rods are fixed on one side of the U-shaped block, and the outer side of the guide rods is slidably connected to the inner wall of the support plate. The inner wall of the support plate is provided with a sliding groove, and the outer side of the roller is slidably connected to the inner wall of the sliding groove.

[0013] As a preferred embodiment of the balance shaft machining fixture of the present invention, wherein: a diagonal brace is installed on the top of the base plate, one side of the diagonal brace is attached to one side of the support plate, and two sets of mounting plates are fixed on the inner wall of the diagonal brace respectively.

[0014] As a preferred embodiment of the balance shaft machining fixture of the present invention, the inner walls of both sets of mounting plates are threaded with fixing bolts, and the outer sides of the fixing bolts are threaded with the inner walls of the base plate and the support plate respectively, and the outer sides of the fixing bolts are fitted with washers.

[0015] In summary, this utility model has the following beneficial effects:

[0016] By using V-blocks and U-blocks in combination, the balance shaft body can be positioned, providing a stable foundation for subsequent fixing. The position of the fixing components can be quickly adjusted by moving the fixing block and mounting bracket driven by the cylinder. Through the design of two sets of meshing gear rods, when one set of gear rods rotates, the other set rotates synchronously in the opposite direction, which can drive the clamping arm to open and close stably under the action of the connecting rod, realizing the clamping and releasing of the balance shaft. The operation is convenient and efficient, effectively improving the processing efficiency, while ensuring the balance and stability of the clamping, and improving the processing quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the 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. Among them:

[0018] Figure 1 This is an overall structural diagram of the fixture used for machining the balance shaft.

[0019] Figure 2 A structural diagram of the inclined support frame for a fixture used in machining a balance shaft.

[0020] Figure 3 This is a structural diagram of the support component for a fixture used in machining a balance shaft.

[0021] Figure 4 A structural diagram of the fixing assembly for a fixture used in machining a balance shaft.

[0022] The following are the labeling elements in the diagram: 1. Base plate; 2. Support plate; 3. V-block; 4. U-block; 5. Balance shaft body; 6. Support component; 61. Fixing plate; 62. Scissor frame; 63. Roller; 7. Cylinder; 8. Fixing block; 9. Mounting bracket; 10. Fixing assembly; 101. Gear rod; 102. Clamping arm; 103. Connecting rod; 11. Transmission gear; 12. Rocker arm; 13. Slide rail; 14. Movable block; 15. Guide rod; 16. Slide groove; 17. Diagonal brace; 18. Mounting plate; 19. Fixing bolt; 20. Washer. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Example 1:

[0027] Reference Figures 1-4 This is the first embodiment of the present utility model. This embodiment provides a jig for machining a balance shaft, including a base plate 1, a support plate 2 fixed on the top of the base plate 1, two sets of V-blocks 3 fixed on one side of the support plate 2, a U-block 4 provided on one side of the support plate 2, a balance shaft body 5 snapped into the inner wall of the U-block 4, and two sets of support members 6 provided on the other side of the U-block 4.

[0028] The base plate 1 serves as the fundamental support component of the entire fixture, providing an installation reference and stable support platform for all other components, ensuring the stability and reliability of the entire fixture during operation. The bracket plate 2 is one of the main support structures of the fixture, used to install V-blocks 3, U-blocks 4, and cylinders 7, connecting and integrating various structures to enable collaborative work. V-blocks 3 utilize the shape of their V-grooves to further position and support the balance shaft body 5, restricting some degrees of freedom of the balance shaft in the horizontal direction and ensuring the relative position stability of the balance shaft body 5 during processing. U-blocks 4 are used to further position and support the balance shaft, enhancing its positioning stability in conjunction with V-blocks 3. The balance shaft body 5 is the object being processed, positioned, clamped, and supported by the various components of the fixture to ensure it maintains the correct position and posture during processing, thereby achieving stable processing operations. The support component 6 supports the U-blocks 4 through its internal structure.

[0029] A cylinder 7 is installed on one side of the bracket plate 2. A fixing block 8 is fixed to the piston rod of the cylinder 7. A mounting bracket 9 is installed on one side of the fixing block 8. A fixing component 10 is provided inside the mounting bracket 9.

[0030] The cylinder 7 serves as the power source; the extension and retraction of its piston rod drives the fixed block 8 to perform linear reciprocating motion, which in turn drives the mounting bracket 9 and the fixing assembly 10 to move, realizing the clamping and releasing operation of the balance shaft and providing power for automated clamping of the fixture. The fixed block 8 is designed to transmit the power of the cylinder 7 to the mounting bracket 9, allowing the mounting bracket 9 to move with the movement of the piston rod of the cylinder 7, thereby driving the balance shaft body 5, which is fixed by the fixing assembly 10, to move towards the V-block 3. The mounting bracket 9 serves as the mounting carrier of the fixing assembly 10, providing mounting space and support for the gear rod 101 and the transmission gear 11. Simultaneously, through its interaction with the fixed block... The connection of cylinder 8, driven by cylinder 7, enables the overall movement. It should be noted that cylinder 7 works in conjunction with an air compressor, air tank, filter pressure reducing valve, directional control valve, and flow control valve. During use, the air compressor compresses ambient air to a set pressure and stores it in the air tank. The filter pressure reducing valve further purifies the air and stabilizes the pressure, then delivers it to the control valve through an air pipe. The directional control valve switches the airflow channel according to an electrical signal, determining the extension and retraction direction of cylinder 7. The flow control valve adjusts the airflow speed, controlling the movement speed of cylinder 7. Compressed air enters the rod chamber or rodless chamber of cylinder 7, pushing the piston to move. The piston drives the piston rod to output linear reciprocating motion.

[0031] The fixing assembly 10 includes two sets of gear rods 101 that rotate on the inner wall of the mounting frame 9. The two sets of gear rods 101 are symmetrically designed and mesh with each other. One end of the gear rod 101 is rotatably connected to a clamping arm 102. The inner wall of the mounting frame 9 is rotatably connected to a connecting rod 103, and the other end of the connecting rod 103 is rotatably connected to the outer side of the clamping arm 102.

[0032] Two sets of gear rods 101 rotate on the inner wall of the mounting bracket 9 and mesh with each other. Driven by the transmission gear 11, the two sets of gear rods 101 rotate synchronously, thereby driving the clamping arm 102 to perform opening and closing movements, realizing the clamping and releasing of the balance shaft. The clamping arm 102 can open and close under the drive of the gear rods 101, directly acting on the balance shaft body 5 to achieve clamping and fixing of the balance shaft body 5, ensuring that the balance shaft body 5 will not move or shake during the processing. The connecting rod 103 is rotatably connected between the inner wall of the mounting bracket 9 and the outer side of the clamping arm 102, playing a role in auxiliary support and guiding the clamping arm 102. The motion makes the movement of the clamping arm 102 more stable. When the fixing component 10 is in use, the rocker arm 12 is rotated first to drive the transmission gear 11 to rotate. Since the transmission gear 11 meshes with the two sets of gear rods 101 and the two sets of gear rods 101 mesh with each other, the gear rods 101 will rotate. When the gear rods 101 rotate, the clamping arm 102 rotates around the connection point with the gear rods 101 through the transmission of the connecting rod 103. The two sets of clamping arms 102 move closer or further away from each other, thereby realizing the clamping or releasing operation of the balance shaft body 5 to meet the fixing requirements of the balance shaft body 5 during processing.

[0033] Example 2:

[0034] This is the second embodiment of the present invention, which is based on the previous embodiment.

[0035] Specifically, the support member 6 includes two sets of fixing plates 61 installed on one side of the U-shaped block 4. A scissor frame 62 is provided on one side of the fixing plate 61, and a roller 63 is rotatably connected to the inner wall of the scissor frame 62.

[0036] The fixed plate 61 serves as the basic mounting component of the support member 6, and is fixed to one side of the U-shaped block 4 to provide mounting support for the scissor frame 62. The scissor frame 62 adopts a scissor structure, which can be extended and adjusted as needed, and plays the role of auxiliary support for the balance shaft, enhancing the stability of the balance shaft during processing, reducing vibration and deformation. The roller 63 is connected to the slide groove 16 by rolling, which allows the scissor frame 62 to move more smoothly during support and adjustment, reducing frictional resistance, and also helps to ensure the stability of the movement of the support member 6.

[0037] Specifically, a transmission gear 11 is rotatably connected to the inner wall of the mounting bracket 9, and the outer side of the transmission gear 11 is meshed with the outer side of the gear rod 101. A rocker arm 12 is fixed at the axis of the transmission gear 11.

[0038] By manually cranking the rocker arm 12, the transmission gear 11 can be driven to rotate, thereby realizing manual operation control of the fixed component 10. This facilitates clamping and loosening of the balance shaft when the cylinder 7 malfunctions or needs manual adjustment.

[0039] Specifically, a slide rail 13 is installed on one side of the fixed plate 61, and a movable block 14 is slidably connected to the outside of the slide rail 13, and the outside of the movable block 14 is rotatably connected to the inner wall of the scissor frame 62.

[0040] The slide rail 13 is provided to provide a sliding track for the movable block 14, ensuring that the movable block 14 can slide stably in a specific direction. The sliding of the movable block 14 on the slide rail 13 can drive the scissor frame 62 to perform telescopic movement, thereby adjusting the relative position of the U-shaped block 4 relative to the support plate 2 to meet the support requirements of the balance shaft body 5.

[0041] Specifically, two sets of guide rods 15 are fixed on one side of the U-shaped block 4, and the outer side of the guide rods 15 is slidably connected to the inner wall of the support plate 2. The inner wall of the support plate 2 is provided with a groove 16, and the outer side of the roller 63 is slidably connected to the inner wall of the groove 16.

[0042] The guide rod 15 is designed to guide the sliding of the U-shaped block 4, ensuring that the U-shaped block 4 can move stably along a straight line during the movement without deviation. The slide groove 16, through its rolling connection with the outer side of the roller 63, provides a track for the movement of the support member 6, allowing the support member 6 to move more smoothly when adjusting its position, and also helps to ensure the stability of the movement of the support member 6.

[0043] Example 3:

[0044] This is the third embodiment of the present invention, which is based on the first two embodiments.

[0045] Specifically, a diagonal brace 17 is installed on the top of the base plate 1. One side of the diagonal brace 17 is attached to one side of the support plate 2. Two sets of mounting plates 18 are fixed to the inner wall of the diagonal brace 17.

[0046] The diagonal brace 17 is designed to enhance the strength and stability of the support plate 2, preventing the support plate 2 from deforming or vibrating due to stress during processing, thus ensuring the structural rigidity and processing stability of the entire fixture. The mounting plate 18 is designed to provide an installation position for the fixing bolts 19, which securely connect the diagonal brace 17 to the base plate 1 and the support plate 2, thereby enhancing the structural stability of the entire fixture.

[0047] Specifically, the inner walls of both sets of mounting plates 18 are threaded with fixing bolts 19, and the outer sides of the fixing bolts 19 are threaded with the inner walls of the base plate 1 and the bracket plate 2, respectively. A washer 20 is fitted on the outer side of the fixing bolts 19.

[0048] The fixing bolt 19 is used to tightly connect the diagonal brace 17, the base plate 1 and the support plate 2 together, ensuring that the entire fixture structure is firm and reliable and can withstand various forces during the processing. When the fixing bolt 19 is tightened, the washer 20 can increase the friction of the connecting surface, prevent the fixing bolt 19 from loosening, and at the same time, it can also disperse the pressure of the fixing bolt 19 on the connecting surface, protecting the connecting surface from damage.

[0049] Working principle: When this balance shaft machining fixture is working, the balance shaft body 5 is first placed on the inner wall of the U-shaped block 4 for initial positioning. Then, the cylinder 7 is activated, and its piston rod pushes the fixing block 8, thereby moving the mounting bracket 9 so that the fixing component 10 is close to the balance shaft body 5. Then, the rocker arm 12 is rotated, and the rocker arm 12 drives the transmission gear 11 to rotate. Because the transmission gear 11 meshes with the gear rod 101, and the two sets of gear rods 101 mesh with each other, the gear rod 101 will rotate accordingly, driving the clamping arm 102 to move. The connecting rod 103 plays an auxiliary rotational connection role, ultimately achieving the clamping and fixing of the balance shaft body 5. Then, the cylinder 7 is activated again, driving the balance shaft body 5, which is fixed by the fixing component 10, to move towards the V-shaped block 3, so that the balance shaft body 5 and the V-shaped block 3 are clamped and fixed. The inner wall of the V-groove of the block 3 fits in place. At the same time, the support 6 plays its role. The slide rail 13 on the fixed plate 61 allows the movable block 14 to slide, driving the scissor frame 62 to extend and retract. The roller 63 inside the scissor frame 62 rolls in the slide groove 16, providing stable support for the balance shaft body 5. The guide rod 15 on one side of the U-shaped block 4 slides on the inner wall of the support plate 2, ensuring the stability of the movement of the U-shaped block 4. In addition, the inclined support frame 17 on the base plate 1 fits in place with the support plate 2. With the fixing bolts 19 on the mounting plate 18, the inclined support frame 17 can be threadedly connected to the base plate 1 and the support plate 2. At the same time, the shim 20 can play an anti-loosening role, enhancing the structural stability of the entire fixture and ensuring that the fixture can reliably fix the balance shaft body 5 when machining, thus ensuring the machining quality.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A jig for machining a balance shaft, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixed with a support plate (2), two sets of V-shaped blocks (3) are fixed on one side of the support plate (2), a U-shaped block (4) is provided on one side of the support plate (2), a balance shaft body (5) is snapped into the inner wall of the U-shaped block (4), and two sets of support members (6) are provided on the other side of the U-shaped block (4). A cylinder (7) is installed on one side of the support plate (2), and a fixing block (8) is fixed to the piston rod of the cylinder (7). A mounting bracket (9) is installed on one side of the fixing block (8), and a fixing component (10) is provided inside the mounting bracket (9). The fixing component (10) includes two sets of gear rods (101) that rotate on the inner wall of the mounting frame (9). The two sets of gear rods (101) are designed to be symmetrical and mesh with each other. One end of the gear rod (101) is rotatably connected to a clamping arm (102). The inner wall of the mounting frame (9) is rotatably connected to a connecting rod (103), and the other end of the connecting rod (103) is rotatably connected to the outer side of the clamping arm (102).

2. The jig for machining a balance shaft as described in claim 1, characterized in that: The support member (6) includes two sets of fixing plates (61) installed on one side of the U-shaped block (4). A scissor frame (62) is provided on one side of the fixing plate (61), and a roller (63) is rotatably connected to the inner wall of the scissor frame (62).

3. The jig for machining a balance shaft as described in claim 1, characterized in that: The inner wall of the mounting bracket (9) is rotatably connected to a transmission gear (11), and the outer side of the transmission gear (11) meshes with the outer side of the gear rod (101). A rocker arm (12) is fixed at the axis of the transmission gear (11).

4. The jig for machining a balance shaft as described in claim 2, characterized in that: A slide rail (13) is installed on one side of the fixed plate (61), and a movable block (14) is slidably connected to the outside of the slide rail (13), and the outside of the movable block (14) is rotatably connected to the inner wall of the scissor frame (62).

5. The jig for machining a balance shaft as described in claim 2, characterized in that: Two sets of guide rods (15) are fixed on one side of the U-shaped block (4), and the outer side of the guide rod (15) is slidably connected to the inner wall of the support plate (2). The inner wall of the support plate (2) is provided with a sliding groove (16), and the outer side of the roller (63) is slidably connected to the inner wall of the sliding groove (16).

6. The jig for machining a balance shaft as described in claim 1, characterized in that: The top of the base plate (1) is equipped with a diagonal brace (17), one side of the diagonal brace (17) is attached to one side of the support plate (2), and two sets of mounting plates (18) are fixed to the inner wall of the diagonal brace (17).

7. The jig for machining a balance shaft as described in claim 6, characterized in that: The inner walls of both sets of mounting plates (18) are threaded with fixing bolts (19), and the outer sides of the fixing bolts (19) are threaded with the inner walls of the base plate (1) and the bracket plate (2), respectively. A washer (20) is sleeved on the outer side of the fixing bolts (19).

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