A fixed clamp for crankshaft machining

Abstract

The utility model relates to the field of crankshaft machining discloses a fixed clamp for crankshaft machining convenient to overturn, include: control platform, the control platform is fixedly arranged with frame body, be provided with fixed overturning mechanism on the frame body, the fixed overturning mechanism includes moving plate, pivot, mounting bracket, friction abutment disc, servo motor and pivot no.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft machining technology, and in particular to a crankshaft machining fixture that is easy to flip. Background Technology

[0002] The crankshaft is the most important component in an engine. It bears the force transmitted from the connecting rod and converts it into torque, which is then output through the crankshaft to drive other accessories on the engine. The crankshaft is subjected to the combined effects of centrifugal force from the rotating mass, periodically changing gas inertial force, and reciprocating inertial force, resulting in bending and torsional loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surfaces must be wear-resistant, operate evenly, and have good balance.

[0003] The prior art, with publication number CN217667998U, discloses a crankshaft machining fixture, including a base and a clamping assembly. The clamping assembly includes two drive seats, two grippers, two push rods, and a clamping arm. The base provides mounting conditions for the drive seats and clamping arms. The clamping assembly clamps the crankshaft from multiple directions, effectively preventing slippage during crankshaft machining. When clamping the crankshaft, the crankshaft is placed between the two grippers. The two drive seats drive the two grippers to clamp both ends of the crankshaft, and the two push rods hold the crankshaft in place, further enhancing the fixing effect on both ends of the crankshaft.

[0004] However, after clamping and fixing the crankshaft, it is inconvenient to quickly rotate and adjust the crankshaft. After fixing, the surface of the crankshaft needs to be inspected and processed. The fixed bearing at a single angle is not convenient for adjusting the inspection surface of the crankshaft, which requires frequent disassembly and assembly operations when the crankshaft needs to be inspected and processed. Therefore, it is necessary to design a crankshaft machining fixture that is easy to rotate to solve the above problems.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a crankshaft machining fixture that is easy to flip, in order to solve the above-mentioned problems.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a crankshaft machining fixing fixture that facilitates rotation, comprising: A control panel, on which a frame is fixedly mounted, and a fixed flipping mechanism is mounted on the frame; The fixed flipping mechanism includes a moving plate, a rotating shaft, a mounting bracket, a friction contact plate, a servo motor, and a rotating shaft. The movable plate is slidably mounted on the frame, the rotating shaft is rotatably mounted on the movable plate, the mounting bracket is fixedly mounted on the movable plate, the mounting bracket passes through the rotating shaft, the friction abutment plate is fixedly connected to the mounting bracket, the servo motor is fixedly mounted on the frame, the output end of the servo motor is fixedly connected to the rotating shaft, the outer side of the rotating shaft is provided with a bidirectional thread, and the rotating shaft is threadedly connected to the movable plate through the bidirectional thread.

[0008] The present invention is further configured such that: the fixed flipping mechanism further includes an L-shaped slide plate, a branch plate, a friction abutment block, and a gear; the L-shaped slide plate is vertically slidably mounted on the frame; the bottom of the branch plate is fixedly connected to the L-shaped slide plate; the friction abutment block is fixedly mounted on the branch plate; the gear is fixedly sleeved on the outside of the rotating shaft; a toothed plate is fixedly provided on the front side of the L-shaped slide plate; the gear meshes with the toothed plate; a circular groove is provided on the side of the movable plate; and a crankshaft contacts the circular groove.

[0009] A further feature of this invention is that the end of the friction contact disc abuts against the crankshaft.

[0010] By adopting the above technical solution, the crankshaft is subjected to contact limiting treatment.

[0011] A further feature of this invention is that an arc-shaped hole is provided on the top of the friction abutment block, and the friction abutment block abuts against the crankshaft.

[0012] A further feature of this invention is that a movable hole is provided at the top of the frame, and a movable plate is slidably installed in the movable hole.

[0013] By adopting the above technical solution, the moving plate can move laterally.

[0014] A further feature of this invention is that a sliding hole is provided at the top of the frame, and an L-shaped sliding plate is vertically slidably installed in the sliding hole.

[0015] By adopting the above technical solution, the L-shaped skateboard can move stably vertically.

[0016] A further feature of this invention is that a guide plate is fixedly disposed inside the movable hole, and the movable plate is slidably sleeved on the outside of the guide plate.

[0017] A further feature of this invention is that the friction contact plate is located within the circular groove.

[0018] A further feature of this invention is that the number of branch plates is multiple, and the multiple branch plates are arranged at equal intervals.

[0019] A further feature of this invention is that the crankshaft is located above the frame.

[0020] The beneficial effects of this utility model are: This invention utilizes a fixed flipping mechanism that drives the crankshaft to rotate via a servo motor. This mechanism simultaneously releases the limiting effect of the friction contact plate and friction contact block on the crankshaft, allowing for direct rotation of the crankshaft to achieve multi-angle flipping. After adjustment, the servo motor can be restarted to re-tighten the crankshaft without repeated disassembly and assembly, significantly simplifying the angle adjustment process during crankshaft surface inspection and processing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in 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.

[0022] Figure 1 This utility model presents a structural schematic diagram of a crankshaft machining fixture that facilitates rotation. Figure 1 .

[0023] Figure 2 This utility model presents a schematic diagram of the structure of a crankshaft machining fixture that facilitates rotation. Figure 2 .

[0024] Figure 3 yes Figure 1 A schematic diagram of part A in the diagram.

[0025] Figure 4 yes Figure 2 A schematic diagram of part B in the diagram.

[0026] In the diagram, 1. Control panel; 2. Frame; 3. Moving plate; 4. Crankshaft; 5. Circular groove; 6. Rotating shaft; 7. Mounting bracket; 8. Friction contact plate; 9. Servo motor; 10. Rotating shaft one; 11. L-shaped sliding plate; 12. Branch plate; 13. Friction contact block; 14. Gear. Detailed Implementation

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0028] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a crankshaft machining fixing fixture that is easy to flip, comprising: Control panel 1, with frame 2 fixedly mounted on control panel 1, and fixed flipping mechanism mounted on frame 2. It should be noted that the friction abutment plate 8 and friction abutment block 13 can simultaneously release the limit on crankshaft 4, and crankshaft 4 can be directly rotated to achieve multi-angle flipping. After adjustment, servo motor 9 can be restarted to re-tighten without repeated disassembly and assembly. The fixed flipping mechanism includes a moving plate 3, a rotating shaft 6, a mounting bracket 7, a friction contact plate 8, a servo motor 9, and a rotating shaft 10; The movable plate 3 is horizontally slidably mounted on the frame 2, the rotating shaft 6 is rotatably mounted on the movable plate 3, the mounting bracket 7 is fixedly mounted on the movable plate 3, the mounting bracket 7 passes through the rotating shaft 6, the friction abutment plate 8 is fixedly connected to the mounting bracket 7, the servo motor 9 is fixedly mounted on the frame 2, the output end of the servo motor 9 is fixedly connected to the rotating shaft 10, the outer side of the rotating shaft 10 is provided with a bidirectional thread, and the rotating shaft 10 is threadedly connected to the movable plate 3 through the bidirectional thread.

[0030] With the above structure, the servo motor 9 is started, and the rotating shaft 10 rotates. There are two bidirectional threads, each half a turn. When the rotating shaft 6 rotates slightly, the moving plate 3 can move a longer distance, which allows the friction abutment plate 8 to abut and limit the crankshaft 4. When it is necessary to flip the crankshaft 4, the servo motor 9 is started, and the rotating shaft 10 reverses. During this process, the two sides of the branch plate 12 are always in contact with the crankshaft 4, which can limit the crankshaft 4 laterally, so that the friction abutment plate 8 and the friction abutment block 13 are separated from the crankshaft 4. Then the crankshaft 4 can be rotated to flip and adjust it. After the adjustment is completed, the servo motor 9 is started, and the friction abutment plate 8 and the friction abutment block 13 are used to tighten and limit the crankshaft 4.

[0031] Specifically, the fixed flipping mechanism also includes an L-shaped slide plate 11, a branch plate 12, a friction abutment block 13, and a gear 14. The L-shaped slide plate 11 is vertically slidably mounted on the frame 2. The bottom of the branch plate 12 is fixedly connected to the L-shaped slide plate 11. The friction abutment block 13 is fixedly mounted on the branch plate 12. The gear 14 is fixedly sleeved on the outside of the rotating shaft 10. A toothed plate is fixedly provided on the front side of the L-shaped slide plate 11. The gear 14 meshes with the toothed plate. A circular groove 5 is opened on the side of the moving plate 3. The crankshaft 4 is in contact with the circular groove 5.

[0032] With the above structure, after the servo motor 9 is started, the friction contact plate 8 can perform contact and limit treatment on the crankshaft 4. During this process, the gear 14 will drive the gear plate to move, which will cause the L-shaped slide plate 11, the branch plate 12 and the friction contact block 13 to move upward, further contact and limit the crankshaft 4, and ensure the stability of the crankshaft 4.

[0033] Specifically, the end of the friction abutment plate 8 abuts against the crankshaft 4, and the top of the friction abutment block 13 has an arc-shaped hole. The friction abutment block 13 abuts against the crankshaft 4. It should be noted that both the friction abutment plate 8 and the friction abutment block 13 are made of highly wear-resistant materials. After the friction abutment plate 8 and the friction abutment block 13 abut against the crankshaft 4, they will apply a large frictional force to the crankshaft 4, thereby limiting the crankshaft 4. This fixing method can meet the requirements when inspecting and performing simple processing on the surface of the crankshaft 4, ensuring the stability of the crankshaft 4.

[0034] It should be added that the servo motor 9 is controlled by an external PLC controller, which can precisely control the number of revolutions of the servo motor 9. This is existing technology, which ensures accurate contact and fixation of the crankshaft 4.

[0035] Specifically, the top of the frame 2 has a moving hole, the moving plate 3 is horizontally slidably installed in the moving hole, the top of the frame 2 has a sliding hole, the L-shaped sliding plate 11 is vertically slidably installed in the sliding hole, a guide plate is fixedly installed in the moving hole, and the moving plate 3 is slidably sleeved on the outside of the guide plate. It should be noted that this facilitates the stable movement of the moving plate 3 and the L-shaped sliding plate 11.

[0036] Specifically, the friction contact plate 8 is located inside the circular groove 5, and the crankshaft 4 is located above the frame 2. It should be noted that this facilitates the movement of the crankshaft 4 into the circular groove 5.

[0037] Specifically, there are multiple branch plates 12, and the multiple branch plates 12 are set at equal intervals. It should be noted that there are also multiple friction abutment blocks 13, which improves the stability of the crankshaft 4 after abutment and limit.

[0038] Working principle: S1: Place the crankshaft 4 to be processed or inspected on the frame 2, so that its two ends are respectively embedded in the round grooves 5 of the two side moving plates 3. Start the servo motor 9, and its output end drives the rotating shaft 10 to rotate. The two side moving plates 3 are driven to slide towards each other along the moving holes of the frame 2 by the bidirectional thread on the outside of the rotating shaft 10. As the moving plates 3 approach the crankshaft 4, the friction abutment plate 8 on the mounting bracket 7 gradually abuts against the end of the crankshaft 4. The crankshaft 4 is initially fixed by the lateral extrusion force. S2: Simultaneously, when the rotating shaft 10 rotates, it drives the gear 14 to rotate synchronously. The gear 14 meshes with the toothed plate on the front side of the L-shaped slide plate 11, driving the L-shaped slide plate 11 to slide upward along the sliding hole of the frame 2. The branch plate 12 at the top of the L-shaped slide plate 11 moves upward accordingly, so that the arc-shaped hole of the friction abutment block 13 is in close contact with the lower surface of the crankshaft 4, further fixing the crankshaft 4 vertically. Multiple sets of equally spaced branch plates 12 and friction abutment blocks 13 can disperse the pressure. With the lateral limit of the friction abutment plate 8, the stability of the crankshaft 4 after fixing is greatly improved, meeting the rigidity requirements during processing or testing. S3: When the crankshaft 4 angle needs to be adjusted, the servo motor 9 is started in reverse, and the rotating shaft 10 drives the moving plate 3 to slide in reverse, so that the friction contact plate 8 is separated from the end of the crankshaft 4; at the same time, the gear 14 rotates in reverse, driving the L-shaped sliding plate 11 to move down, and the friction contact block 13 is released from contact with the crankshaft 4, releasing the fixed constraint on the crankshaft 4. At this time, the crankshaft 4 is only slightly limited by the circular groove 5, and can be manually or with the help of external tools to rotate around its own axis and quickly adjust to the required angle. After the angle adjustment is completed, the servo motor 9 is started in the forward direction again to repeat the fixing process. The friction contact plate 8 and the friction contact block 13 are pressed against the crankshaft 4 again, restoring the stable fixed state. The entire rotation process does not require disassembling the crankshaft. The forward and reverse rotation of the servo motor realizes the quick switching between fixing and unlocking, which effectively solves the problem of frequent disassembly and assembly of traditional fixtures and improves the efficiency and convenience of crankshaft processing and inspection.

[0039] The foregoing has provided a detailed description of a crankshaft machining fixture that facilitates rotation, as provided by this utility model. Specific embodiments have been used to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.

Claims

1. A crankshaft machining fixture that facilitates rotation, characterized in that, include: A control panel (1) is fixedly provided with a frame (2), and a fixed flipping mechanism is provided on the frame (2); The fixed flipping mechanism includes a moving plate (3), a rotating shaft (6), a mounting bracket (7), a friction contact plate (8), a servo motor (9), and a rotating shaft (10). The movable plate (3) is slidably mounted on the frame (2), the rotating shaft (6) is rotatably mounted on the movable plate (3), the mounting bracket (7) is fixedly mounted on the movable plate (3), the mounting bracket (7) passes through the rotating shaft (6), the friction abutment plate (8) is fixedly connected to the mounting bracket (7), the servo motor (9) is fixedly mounted on the frame (2), the output end of the servo motor (9) is fixedly connected to the rotating shaft (10), the rotating shaft (10) is provided with a bidirectional thread on the outside, and the rotating shaft (10) is threadedly connected to the movable plate (3) through the bidirectional thread.

2. The crankshaft machining fixture for easy rotation as described in claim 1, characterized in that, The fixed flipping mechanism also includes an L-shaped slide plate (11), a branch plate (12), a friction abutment block (13), and a gear (14). The L-shaped slide plate (11) is vertically slidably mounted on the frame (2). The bottom of the branch plate (12) is fixedly connected to the L-shaped slide plate (11). The friction abutment block (13) is fixedly mounted on the branch plate (12). The gear (14) is fixedly sleeved on the outside of the rotating shaft (10). A toothed plate is fixedly provided on the front side of the L-shaped slide plate (11). The gear (14) meshes with the toothed plate. A circular groove (5) is provided on the side of the moving plate (3). A crankshaft (4) is in contact with the circular groove (5).

3. A crankshaft machining fixing fixture for easy flipping as described in claim 2, characterized in that, The end of the friction contact plate (8) abuts against the crankshaft (4).

4. A crankshaft machining fixing fixture for easy flipping as described in claim 2, characterized in that, The friction abutment block (13) has an arc-shaped hole at the top, and the friction abutment block (13) abuts against the crankshaft (4).

5. A crankshaft machining fixing fixture for easy flipping as described in claim 1, characterized in that, The top of the frame (2) has a movable hole, and the movable plate (3) is slidably installed in the movable hole.

6. A crankshaft machining fixing fixture for easy flipping as described in claim 2, characterized in that, The top of the frame (2) has a sliding hole, and the L-shaped sliding plate (11) is vertically slidably installed in the sliding hole.

7. A crankshaft machining fixing fixture for easy flipping as described in claim 5, characterized in that, A guide plate is fixedly installed inside the movable hole, and the movable plate (3) is slidably sleeved on the outside of the guide plate.

8. A crankshaft machining fixing fixture for easy flipping as described in claim 2, characterized in that, The friction contact plate (8) is located inside the circular groove (5).

9. A crankshaft machining fixing fixture for easy flipping according to claim 2, characterized in that, The number of branch plates (12) is multiple, and the multiple branch plates (12) are arranged at equal intervals.

10. A crankshaft machining fixing fixture for easy flipping according to claim 2, characterized in that, The crankshaft (4) is located above the frame (2).

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