Auxiliary tool for machining automobile engine shell
By coordinating four sets of clamping plates with a rotating and guiding mechanism, multi-position alternating clamping is achieved, solving the problem of clamping plate fatigue during engine casing machining and improving machining accuracy and equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YOUPEIYI POWER TECH CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-05-08
AI Technical Summary
In existing engine casing machining fixtures, the clamping plate is prone to structural fatigue due to local stress concentration and frictional wear, which affects machining accuracy and equipment maintenance cycle.
Four sets of clamping plates work together, combined with a rotating mechanism and a guiding mechanism, to achieve multi-position alternating clamping. The clamping plates rotate 90° synchronously when pressed down, forming a dynamic stress dispersion mode. The guiding mechanism ensures that the clamping plates rotate when rising and falling, avoiding continuous force on a single position.
It extends the lifespan of the device, maintains clamping stability, improves machining accuracy, reduces wear on the clamping plate, and extends the service life of the equipment.
Smart Images
Figure CN224209532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts processing technology, and in particular to auxiliary tooling for processing automotive engine housings. Background Technology
[0002] The engine housing (usually referring to the engine casing) is a key structural component that houses and protects the core components of the engine. Its materials are mostly high-strength aluminum alloy, cast iron, or steel, and must meet requirements such as lightweight, corrosion resistance, and high rigidity. During the processing, the engine housing needs to go through multiple processes such as casting, CNC milling, drilling, and boring. In order to prevent the engine housing from shaking, it is particularly important to fix it, which requires the use of clamping fixtures.
[0003] Existing clamping fixtures are mostly composed of a support frame, cylinder, limit block, and clamping plate. The cylinder is installed at the top of the support frame, and the clamping plate is connected to the limit block. Its working principle is as follows: When the cylinder runs, it drives the limit block to move up and down inside the support frame. The movement of the limit block will drive the clamping plate to move. When the clamping plate moves down, it will approach and contact the engine housing. When the clamping plate contacts the housing, it will apply downward pressure to the housing, thereby achieving the purpose of clamping.
[0004] Currently, engine housing machining fixtures generally use a single set of clamping plates to fix the workpiece. This results in the same set of clamping plates having to continuously bear complex stress. During long-term repetitive clamping, the clamping plates are prone to structural fatigue due to local stress concentration and frictional wear. This not only accelerates the degradation of material properties, but also leads to a decrease in clamping stability due to wear accumulation, thereby affecting machining accuracy and equipment maintenance cycle. Therefore, this application proposes an auxiliary tooling for machining automotive engine housings. Utility Model Content
[0005] The purpose of this invention is to address the problem of clamping fatigue caused by a set of clamping plates in the background technology, and to propose an auxiliary tooling for machining automobile engine housings.
[0006] The technical solution of this utility model: an auxiliary tooling for processing automobile engine housing, including a processing table, a pair of support frames installed at the top of the processing table, a cylinder installed at the top of the support frames, a limit block connected to the output end of the cylinder, the limit block sliding inside the support frame, a connecting rod one rotatably connected inside the limit block, a connecting rod two slidably connected inside the connecting rod one, a block fixed to the outside of the connecting rod two, four sets of clamping plates fixed to the outside of the block, a rotating mechanism provided around the connecting rod two, the rotating mechanism being used to drive the connecting rod two to rotate when moving vertically, a V-plate and an inclined block fixed to the outside of the support frames respectively, a guide mechanism being provided around the connecting rod two to move the connecting rod two in cooperation with the V-plate and the inclined block, the guide mechanism being used to drive the connecting rod two to move inside the connecting rod one.
[0007] Optionally, the rotating mechanism includes a spur gear and a rack, the spur gear being fixed to the outside of the second connecting rod, and the rack being fixed to one end of the support frame near the first connecting rod.
[0008] Optionally, the guiding mechanism includes a pair of ring plates, an L-plate, a guide rod, and an offset rod. The pair of ring plates are both sleeved on the outside of the connecting rod two, and the pair of ring plates are respectively set at both ends of the spur gear. The L-plate is fixedly connected to the pair of ring plates. The guide rod is slidably connected inside the L-plate, and the end of the guide rod away from the L-plate is slidably connected inside the support frame. The offset rod is fixedly connected to the outside of the L-plate, and the offset rod is in contact with the inside of the V-plate.
[0009] Optionally, a blower mechanism is provided around the support frame to clean dust from the outside of the clamping plate.
[0010] Optionally, the blower mechanism includes a fixed plate, an air pipe, and a blower. The fixed plate is fixed to the outside of the support frame, the air pipe is installed inside the fixed plate, the blower is installed on the outside of the fixed plate, and the output end of the blower is connected to the air pipe.
[0011] Optionally, a buffer pad made of rubber is glued to the end of each of the four clamping plates away from the block.
[0012] Compared with the prior art, this application includes at least one of the following beneficial technical effects:
[0013] This invention utilizes four sets of clamping plates working in concert, along with a rotating mechanism and a guiding mechanism, to achieve alternating clamping at multiple positions. During clamping, the four sets of clamping plates rotate synchronously by 90° under the influence of the rotating mechanism when pressed down, forming a dynamic stress dispersion mode. This avoids fatigue damage caused by continuous force on a single position. The guiding mechanism ensures that the clamping plates rotate when lifting and lowering and remain stationary when rising, preventing the clamping plates from reciprocating. This reduces component wear and maintains clamping stability, thereby extending the life of the device and ensuring processing accuracy. Attached Figure Description
[0014] Figure 1 A schematic diagram of the overall structure of auxiliary tooling for machining the outer casing of an automobile engine;
[0015] Figure 2 A partial structural diagram of auxiliary tooling for machining the casing of an automobile engine;
[0016] Figure 3 This is a schematic diagram of the rack structure;
[0017] Figure 4 This is a cross-sectional view of connecting rod one;
[0018] Figure 5 This is a schematic diagram of the inclined block and guide rod.
[0019] Figure 6 for Figure 5 A magnified structural diagram at point A;
[0020] Figure 7 This is a structural diagram of the fixing plate and the air tube.
[0021] Reference numerals in the attached drawings: 1. Machining table; 2. Support frame; 3. Cylinder; 4. Limiting block; 5. Connecting rod one; 6. Connecting rod two; 7. Square block; 8. Clamping plate; 9. V-plate; 10. Inclined block; 11. Spur gear; 12. Rack; 13. Ring plate; 14. L-plate; 15. Guide rod; 16. Offset rod; 17. Fixing plate; 18. Air pipe; 19. Buffer pad. Detailed Implementation
[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0023] Example
[0024] like Figures 1-5As shown, the auxiliary tooling for machining the automobile engine housing proposed in this utility model includes a machining table 1. A pair of support frames 2 are installed on the top of the machining table 1. A cylinder 3 is installed on the top of the support frame 2. The output end of the cylinder 3 is connected to a limiting block 4. The limiting block 4 slides inside the support frame 2. First, the workpiece to be clamped is placed on the machining table 1. Then, the cylinder 3 is started. When the cylinder 3 runs, it drives the limiting block 4 to move down inside the support frame 2. A connecting rod 5 is rotatably connected inside the limiting block 4. The downward movement of the limiting block 4 will drive the connecting rod 5 to move synchronously. A connecting rod 6 is slidably connected inside the connecting rod 5. The movement of the connecting rod 5 will drive the connecting rod 6 to move down. A block 7 is fixed to the outside of the connecting rod 6. Four sets of clamping plates 8 are fixed to the outside of the block 7. As the connecting rod 6 moves down, the connecting rod 6 will eventually drive the clamping plates 8 to move down through the block 7.
[0025] Furthermore, such as Figure 3 and Figure 4 As shown, a rotating mechanism is provided around the second connecting rod 6. The rotating mechanism is used to drive the second connecting rod 6 to rotate when it moves vertically. When the second connecting rod 6 moves down a certain distance, the rotating mechanism will drive the second connecting rod 6 to rotate. The rotation of the first connecting rod 5 will drive the four sets of clamping plates 8 to rotate through the block 7. At this time, the second connecting rod 6 will rotate 90°, and the four sets of clamping plates 8 will then rotate 90° around the second connecting rod 6. The outer side of the support frame 2 is fixed with a V plate 9 and an inclined block 10 respectively.
[0026] In addition, such as Figure 4 , Figure 5 and Figure 6 As shown, a guide mechanism is provided around the second connecting rod 6 to move the second connecting rod 6 in cooperation with the V-plate 9 and the inclined block 10. The guide mechanism is used to drive the second connecting rod 6 to move inside the first connecting rod 5. As the second connecting rod 6 continues to move downward, the guide mechanism will drive the second connecting rod 6 to move a certain distance along the inside of the first connecting rod 5. Then the clamping plate 8 contacts and squeezes the workpiece. After processing is completed, the second connecting rod 6 moves upward, and the clamping plate 8 disengages from the workpiece. When the second connecting rod 6 moves upward, due to the action of the guide mechanism, the second connecting rod 6 is already inside the first connecting rod 5. When the connecting rod 26 moves a certain distance and rises, the rotating mechanism will not be triggered, and the four sets of clamping plates 8 will not rotate. When the clamping plate 8 moves to the top, the guide mechanism will drive the connecting rod 26 to move inside the connecting rod 15, ensuring that when the connecting rod 26 moves down next time, it can still drive the clamping plate 8 to rotate. This ensures that different clamping plates 8 cyclically contact the workpiece. Through the above structural design, the four sets of clamping plates 8 cyclically contact the workpiece, reducing the structural fatigue of one set of clamping plates 8 due to local stress concentration and frictional wear, and improving the service life of the device.
[0027] Among them, such as Figure 3 and Figure 4 As shown, the rotating mechanism includes a spur gear 11 and a rack 12. The rotating mechanism is described in detail below:
[0028] The spur gear 11 is fixed to the outside of the connecting rod 2 6, and the rack 12 is fixed to the end of the support frame 2 near the connecting rod 1 5. When the connecting rod 2 6 moves downward, it will synchronously drive the spur gear 11 downward. When the spur gear 11 moves downward to a certain distance, it will contact the rack 12. Since the position of the rack 12 is fixed, the spur gear 11 will rotate along the rack 12. The rotation of the spur gear 11 will then drive the connecting rod 2 6 to rotate. The rotation of the connecting rod 2 6 will eventually drive the four sets of clamping plates 8 to rotate 90° through the block 7. As the connecting rod 2 6 continues to move downward, the guide mechanism will drive the connecting rod 2 6 to move along the inside of the connecting rod 1 5. At this time, since the movement of the connecting rod 2 6 will drive the spur gear 11 to move, the spur gear 11 will be separated from the rack 12 and will not be in contact with the rack 12 when it moves upward, thus ending the rotation.
[0029] In addition, such as Figure 4 , Figure 5 and Figure 6 As shown, the guiding mechanism includes a pair of ring plates 13, an L-plate 14, a guide rod 15, and an offset rod 16. The guiding mechanism is described in detail below:
[0030] A pair of ring plates 13 are sleeved on the outside of the connecting rod 2 6, and the pair of ring plates 13 are respectively set at both ends of the spur gear 11. The L plate 14 is fixedly connected to the pair of ring plates 13. The guide rod 15 is slidably connected inside the L plate 14, and the end of the guide rod 15 away from the L plate 14 is slidably connected inside the support frame 2. The guide rod 15 can cooperate with the ring plates 13 to support and limit the L plate 14. The offset rod 16 is fixedly connected to the outside of the L plate 14. The offset rod 16 is in contact with the inside of the V plate 9. In the initial state, the offset rod 16 is inside the V plate 9. When the connecting rod 2 6 moves down, the connecting rod 2 6 will drive the L plate 14 to move down through the ring plate 13. At this time, the L plate 14 will move down along the outside of the guide rod 15, and the offset rod 16 will also move synchronously with the movement of the L plate 14. As the offset rod 16 continues to move down, the offset rod... The offset rod 16 will contact the inclined surface of the inclined block 10. Since the position of the inclined block 10 is fixed, the offset rod 16 will move laterally. The offset rod 16 will then drive the ring plate 13 to move through the L plate 14. When the ring plate 13 moves, it will push the spur gear 11 to move. The spur gear 11 will then drive the connecting rod 2 6 to move along the inside of the connecting rod 1 5. At this time, the movement of the spur gear 11 will end its contact with the rack 12. The spur gear 11 will rise and will not contact the rack 12. After the connecting rod 2 6 moves up a certain distance, the offset rod 16 will contact the inclined surface inside the V plate 9. Since the position of the V plate 9 is fixed, the offset rod 16 will move along the inclined surface of the V plate 9. The ring plate 13 will then reset. When the ring plate 13 resets, it will drive the spur gear 11 to move laterally to reset, ensuring that the ring plate 13 is once again in the same plane as the rack 12, which will facilitate rotation during the next movement.
[0031] Furthermore, such as Figure 7 As shown, a blower mechanism is provided on the periphery of the support frame 2. The blower mechanism is used to clean the dust on the outside of the clamping plate 8. The blower mechanism can blow the external wind force to the outside of the clamping plate 8, thereby removing dust from the outside of the clamping plate 8. It should be noted that the force blown by the blower mechanism will not drive the clamping plate 8 to rotate.
[0032] Among them, such as Figure 7 As shown, the blower mechanism includes a fixed plate 17, an air pipe 18, and a blower. The blower mechanism is described in detail below:
[0033] The fixed plate 17 is fixed to the outside of the support frame 2. The air pipe 18 is installed inside the fixed plate 17. The blower is installed on the outside of the fixed plate 17. The output end of the blower is connected to the air pipe 18. When the blower is running, it can disperse the external wind through the air pipe 18 and blow it onto the surface of the clamping plate 8 to perform dust removal. Although the position of the air pipe 18 is fixed, the four sets of clamping plates 8 will cyclically approach the air pipe 18. Therefore, all four sets of clamping plates 8 can receive the wind force from the blower. It should be noted that the blower is existing technology and the technology is mature, so it will not be elaborated on further.
[0034] Furthermore, such as Figure 7 As shown, buffer pads 19 are glued to the ends of the four clamping plates 8 away from the blocks 7. The buffer pads 19 are made of rubber. The buffer pads 19 can increase the friction when the clamping plates 8 come into contact with the workpiece, improve the clamping effect, and also play a buffering role, reducing the impact force when the clamping plates 8 come into contact with the workpiece.
[0035] In this embodiment, the workpiece to be clamped is first placed on the processing table 1. Then, the cylinder 3 is started. When the cylinder 3 runs, it drives the limiting block 4 to move down inside the support frame 2. The downward movement of the limiting block 4 will drive the connecting rod 1 5 to move synchronously. The connecting rod 1 5 is slidably connected to the connecting rod 2 6. The movement of the connecting rod 1 5 will drive the connecting rod 2 6 to move down. As the connecting rod 2 6 moves down, the connecting rod 2 6 will eventually drive the clamping plate 8 to move down through the block 7.
[0036] When connecting rod 26 moves downward, it synchronously drives spur gear 11 downward. When spur gear 11 moves down a certain distance, it contacts rack 12. Since rack 12 is fixed in position, spur gear 11 rotates along rack 12. The rotation of spur gear 11 then drives connecting rod 26 to rotate. The rotation of connecting rod 26 eventually drives the four sets of clamping plates 8 to rotate 90° through block 7. As connecting rod 26 continues to move downward, it drives L-plate 14 downward through ring plate 13. At this time, L-plate 14 moves downward along the outside of guide rod 15, and offset rod 16 moves synchronously with L-plate 14. As offset rod 16 continues to move downward, it contacts the inclined surface of inclined block 10. Since the position of inclined block 10 is fixed, offset rod 16... 6 will move laterally, and the offset rod 16 will drive the ring plate 13 to move through the L plate 14. When the ring plate 13 moves, it will push the spur gear 11 to move. The spur gear 11 will then drive the connecting rod 2 6 to move along the inside of the connecting rod 1 5. At this time, the movement of the spur gear 11 will end its alignment with the rack 12. The spur gear 11 will rise and will not contact the rack 12. After the connecting rod 2 6 moves up a certain distance, the offset rod 16 will contact the inclined surface inside the V plate 9. Since the position of the V plate 9 is fixed, the offset rod 16 will move along the inclined surface of the V plate 9. The ring plate 13 will then reset. When the ring plate 13 resets, it will drive the spur gear 11 to move laterally to reset, ensuring that the ring plate 13 is once again in the same plane as the rack 12, which will facilitate rotation during the next movement.
[0037] When the blower is running, it can disperse the external wind through the air pipe 18 and blow it onto the surface of the clamping plate 8 to remove dust. Although the position of the air pipe 18 is fixed, the four clamping plates 8 will circulate close to the air pipe 18. Therefore, all four clamping plates 8 can receive the wind force from the blower.
[0038] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. An auxiliary tooling for machining an automobile engine housing, comprising a machining table (1), a pair of support frames (2) mounted on the top of the machining table (1), a cylinder (3) mounted on the top of the support frames (2), and a limit block (4) connected to the output end of the cylinder (3), the limit block (4) sliding inside the support frame (2), characterized in that: The limiting block (4) is rotatably connected to a connecting rod 1 (5), the connecting rod 1 (5) is slidably connected to a connecting rod 2 (6), a block (7) is fixed to the outside of the connecting rod 2 (6), four sets of clamping plates (8) are fixed to the outside of the block (7), a rotating mechanism is provided on the periphery of the connecting rod 2 (6), the rotating mechanism is used to drive the connecting rod 2 (6) to rotate when moving vertically, a V plate (9) and an inclined block (10) are fixed to the outside of the support frame (2), and a guide mechanism is provided on the periphery of the connecting rod 2 (6) to move the connecting rod 2 (6) in cooperation with the V plate (9) and the inclined block (10), the guide mechanism is used to drive the connecting rod 2 (6) to move inside the connecting rod 1 (5).
2. The auxiliary tooling for machining the automobile engine housing according to claim 1, characterized in that, The rotating mechanism includes a spur gear (11) and a rack (12). The spur gear (11) is fixed to the outside of the connecting rod 2 (6), and the rack (12) is fixed to the end of the support frame (2) near the connecting rod 1 (5).
3. The auxiliary tooling for machining the automobile engine housing according to claim 1, characterized in that, The guiding mechanism includes a pair of ring plates (13), an L plate (14), a guide rod (15), and an offset rod (16). The pair of ring plates (13) are both sleeved on the outside of the connecting rod (6), and the pair of ring plates (13) are respectively set at both ends of the spur gear (11). The L plate (14) is fixedly connected to the pair of ring plates (13). The guide rod (15) is slidably connected inside the L plate (14), and the end of the guide rod (15) away from the L plate (14) is slidably connected inside the support frame (2). The offset rod (16) is fixedly connected to the outside of the L plate (14), and the offset rod (16) is in contact with the inside of the V plate (9).
4. The auxiliary tooling for machining the automobile engine housing according to claim 1, characterized in that, The support frame (2) is provided with a blower mechanism on its periphery, which is used to clean the dust on the outside of the clamping plate (8).
5. The auxiliary tooling for machining the automobile engine housing according to claim 4, characterized in that, The blower mechanism includes a fixed plate (17), an air pipe (18) and a blower. The fixed plate (17) is fixed to the outside of the support frame (2). The air pipe (18) is installed inside the fixed plate (17). The blower is installed on the outside of the fixed plate (17). The output end of the blower is connected to the air pipe (18).
6. The auxiliary tooling for machining the automobile engine housing according to claim 1, characterized in that, Each of the four sets of clamping plates (8) has a buffer pad (19) glued to the end away from the block (7), and the buffer pad (19) is made of rubber.