Special-shaped crankshaft forge piece machining clamp for forging

Abstract

The utility model relates to a special-shaped crankshaft forge piece machining clamp for forging, and effectively solves the problems that an existing clamp cannot well fix a crankshaft forge piece, and machining precision and efficiency are affected. According to the special-shaped crankshaft forge piece machining clamp for forging, the distance between the rotating frame and the fixed side plate can be adjusted by adjusting the movable side plate mechanism, so that crankshafts of different sizes can be horizontally clamped between the rotating frame and the fixed side plate, the rotating clamping mechanism can clamp the ends of the crankshafts and can drive the crankshafts to rotate at the same time, and different parts of the crankshafts can be machined conveniently; the limiting mechanism can be adjusted to correspond to different parts of the crankshaft through the sliding seat and the manual adjusting mechanism, and the bottom of the crankshaft is supported through the supporting mechanism, so that the crankshaft can be accurately limited and fixed in different rotating states, and an operator can conveniently and stably machine different parts of the crankshaft; errors caused by movement of the crankshaft during crankshaft machining are avoided, the crankshaft machining accuracy is guaranteed, and meanwhile the machining efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of crankshaft machining fixture technology, specifically relating to a machining fixture for irregularly shaped crankshaft forgings. Background Technology

[0002] The crankshaft is the most important component in a car 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. Car engines commonly use semi-circular keyway crankshafts. During crankshaft machining, a fixture is needed to fix the crankshaft before machining the keyways and pin holes.

[0003] Due to the special shape of the crankshaft, ordinary clamping fixtures cannot meet the processing requirements. When fixing the crankshaft, it is not possible to fix it well according to its condition. As a result, the machining accuracy will be affected when grinding or drilling the crankshaft due to the unstable fixation. At the same time, the inconvenience of fixing the crankshaft will also affect the processing efficiency. In addition, since various sizes of this type of crankshaft need to be processed, different fixtures are required, which has the disadvantages of cumbersome processing and increased cost. Therefore, it is necessary to design a machining fixture that is easy to use, adjustable, and has a good fixing effect on the crankshaft. Utility Model Content

[0004] To address the above issues and overcome the shortcomings of existing technologies, this utility model provides a forging fixture for irregularly shaped crankshafts. This fixture can horizontally clamp crankshafts of different sizes between two parts, while the rotating clamping mechanism can clamp the end of the crankshaft and drive it to rotate, facilitating the processing of different parts of the crankshaft. Furthermore, the sliding seat and manual adjustment mechanism can adjust the positioning mechanism to correspond with different parts of the crankshaft, and the support mechanism supports the bottom of the crankshaft, thereby accurately positioning and fixing the crankshaft in different rotational states. This allows operators to stably process different parts of the crankshaft, avoiding errors caused by crankshaft movement during processing, ensuring the accuracy of crankshaft processing, and also accelerating processing efficiency.

[0005] A forging fixture for irregularly shaped crankshafts includes a base and a fixed side plate. The fixed side plate is fixedly connected to one side of the upper surface of the base and has a rotating clamping mechanism on its top. A movable side plate mechanism that can move laterally is provided on the side of the upper surface of the base away from the fixed side plate, and a rotating frame is provided on the top of the movable side plate mechanism. A sliding seat is slidably connected to the upper surface of the base, and a manual adjustment mechanism is provided on the top of the sliding seat. A limiting mechanism that can fix and limit the crankshaft is provided above the manual adjustment mechanism, and a support mechanism that can support the bottom of the crankshaft is provided on the side of the limiting mechanism.

[0006] Preferably, the rotating clamping mechanism includes a first motor and a chuck, the chuck being connected to the output shaft end of the first motor via a flange, and the first motor being fixedly connected to the side of the fixed side plate away from the moving side plate mechanism.

[0007] Preferably, the movable side plate mechanism includes a movable side plate, a sliding sleeve, a second motor, and a threaded screw. The threaded screw is rotatably connected to the middle of the upper surface of the base and connected to the second motor via a spline. Both ends of the bottom of the movable side plate are fixedly connected to the sliding sleeve, and the bottom end of the middle of the movable side plate is connected to the outside of the threaded screw via a threaded drive.

[0008] Preferably, the upper surface of the base is provided with a first sliding groove and a slide rail adapted to the sliding sleeve is fixedly connected inside the first sliding groove, and the sliding sleeves on both sides of the bottom of the movable side plate are slidably connected to the outside of the two slide rails respectively.

[0009] Preferably, the manual adjustment mechanism includes a hand-cranked screw, a screw slider, and a fixing frame. The hand-cranked screw is rotatably connected to the top of the sliding seat, and the screw slider is threadedly connected to the outside of the hand-cranked screw. The fixing frame is fixedly connected to the top of the screw slider.

[0010] Preferably, the limiting mechanism includes an electric push rod, a movable block, and a vertical stop bar. The electric push rod is fixedly installed on the side of the fixed frame and its movable end passes through the inside of the fixed frame. The movable block is fixedly connected to the end of the electric push rod. Vertical stop bars are inserted into both the side of the upper surface of the fixed frame away from the electric push rod and the upper surface of the movable block.

[0011] Preferably, the support mechanism includes a horizontal support plate and a locking knob. The horizontal support plate is vertically slidably connected to the inside of the vertical baffle and can move up and down inside it. The horizontal support plate can support the bottom of the crankshaft. The locking knob is threadedly connected to the middle of the side of the horizontal support plate and can abut against the side of the vertical baffle, thereby fixing the position of the horizontal support plate.

[0012] The beneficial effects of the above technical solution are as follows:

[0013] This forging fixture for irregularly shaped crankshafts incorporates a rotating clamping mechanism, a moving side plate mechanism, a limiting mechanism, and a supporting mechanism. Operators can adjust the distance between the moving side plate and the fixed side plate to horizontally clamp crankshafts of different sizes between them. The rotating clamping mechanism clamps the ends of the crankshaft and rotates it, facilitating the machining of different parts of the crankshaft. Furthermore, the sliding seat and manual adjustment mechanism allow for alignment of the limiting mechanism with different parts of the crankshaft, while the supporting mechanism supports the bottom of the crankshaft, accurately limiting and fixing it in different rotational states. This allows operators to perform stable machining of different parts of the crankshaft, avoiding errors caused by crankshaft movement during machining, ensuring machining accuracy, and accelerating processing efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the base and movable side plate mechanism of this utility model;

[0016] Figure 3 This is a schematic diagram of the disassembled state of the movable side plate mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the disassembled state of the rotating clamping mechanism of this utility model;

[0018] Figure 5 This is a schematic diagram showing the disassembled state of the limiting mechanism and the supporting mechanism of this utility model.

[0019] In the diagram: 1. Base; 2. Fixed side plate; 3. Rotating frame; 4. Sliding seat; 5. First motor; 6. Chuck; 7. Moving side plate; 8. Sliding sleeve; 9. Second motor; 10. Threaded screw; 11. First slide groove; 12. Slide rail; 13. Hand-cranked screw; 14. Screw slider; 15. Fixed frame; 16. Electric push rod; 17. Movable block; 18. Vertical stop bar; 19. Horizontal support plate; 20. Locking knob; 21. Slider; 22. Second slide groove. Detailed Implementation

[0020] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 5 The embodiments are described in detail below.

[0021] This embodiment provides a machining fixture for irregularly shaped crankshaft forgings, as shown in the attached figure. Figure 1-5As shown, it includes a base 1 and a fixed side plate 2. The fixed side plate 2 is fixedly connected to one side of the upper surface of the base 1 and has a rotating clamping mechanism on its top. The rotating clamping mechanism includes a first motor 5 and a chuck 6. The chuck 6 is connected to the output shaft end of the first motor 5 through a flange. The first motor 5 is fixedly connected to the side of the fixed side plate 2 away from the moving side plate mechanism. The output shaft of the first motor 5 is rotatably connected to the top of the fixed side plate 2 through a bearing. The chuck 6 is a known technology and will not be described in detail here. It can clamp structures of different sizes and can be used to clamp one end of the crankshaft shaft.

[0022] A movable side plate mechanism that can move laterally is provided on the side of the upper surface of the base 1 away from the fixed side plate 2, and a rotating frame 3 is provided on the top of the movable side plate mechanism. The rotating frame 3 is rotatably connected to the top of the movable side plate 7 through bearings and is horizontally aligned with the center of the chuck 6. The movable side plate mechanism includes the movable side plate 7, a sliding sleeve 8, a second motor 9, and a threaded screw 10. The threaded screw 10 is rotatably connected to the middle of the upper surface of the base 1 and is connected to the second motor 9 through a spline. A groove is provided on the upper surface of the base 1, and the threaded screw 10 is placed in the groove. Sliding sleeves 8 are fixedly connected to both ends of the bottom of the movable side plate 7. The bottom end of the middle of the movable side plate 7 is open. The screw is connected to the outside of the threaded screw 10 via a threaded transmission. The upper surface of the base 1 is provided with a first slide groove 11, and a slide rail 12 adapted to the slide sleeve 8 is fixedly connected inside the first slide groove 11. There are two slide rails 12, which are arranged parallel to each other and correspond to two slide sleeves 8 respectively. The slide sleeves 8 on both sides of the bottom of the movable side plate 7 are slidably connected to the outside of the two slide rails 12, which can guide and limit the movable side plate 7. The second motor 9 drives the threaded screw 10 to rotate, which can drive the movable side plate 7 to move laterally, thereby adjusting the distance between the rotating frame 3 and the chuck 6, which is convenient for clamping crankshafts of different sizes.

[0023] A sliding seat 4 is slidably connected to the upper surface of the base 1. Several sliders 21 are fixedly connected to the bottom of the sliding seat 4. Several second sliding grooves 22 are opened on the upper surface of the base 1 and the vertically corresponding parts of the sliders 21. Each slider 21 is slidably connected in its corresponding second sliding groove 22, which allows the sliding seat 4 to slide laterally on the base 1 and correspond to different parts of the crankshaft fixed above. A manual adjustment mechanism is provided on the top of the sliding seat 4. The manual adjustment mechanism includes a hand crank screw 13, a screw slider 14 and a fixing frame 15. The hand crank screw 13 is rotatably connected to the top of the sliding seat 4 and the screw slider 14 is threaded to the outside of the hand crank screw 13. The fixing frame 15 is fixedly connected to the top of the screw slider 14. By rotating the hand crank screw 13, the screw slider 14 can be driven to move laterally back and forth, thereby facilitating the adjustment of the fixing frame 15 to move back and forth along the axial direction of the hand crank screw 13. It cooperates with the sliding seat 4 to facilitate the correspondence and limiting support of the upper limiting mechanism and support mechanism with different parts of the crankshaft.

[0024] Above the manual adjustment mechanism is a limiting mechanism for fixing and limiting the crankshaft. The limiting mechanism includes an electric push rod 16, a movable block 17, and a vertical stop bar 18. The electric push rod 16 is fixedly installed on the side of the fixed frame 15, with its movable end passing through the interior of the fixed frame 15. The movable block 17 is fixedly connected to the end of the electric push rod 16. Vertical stop bars 18 are inserted into both the side of the upper surface of the fixed frame 15 away from the electric push rod 16 and the upper surface of the movable block 17. The vertical stop bars 18 can be detached from the movable block 17 and the fixed frame 15. The crankshaft is fixed between the rotating frame 3 and the chuck 6 before the vertical stop bars 18 are installed. The fixed frame 15 is adjusted to the position where the crankshaft needs to be fixed by the sliding seat 4 and the hand-cranked adjustment mechanism. Then, the vertical stop bar 18 is installed on the fixed frame 15 and the movable block 17. First, the hand-cranked adjustment mechanism is used to make the vertical stop bar 18 on the fixed frame 15 abut against the side of the crankshaft. Then, the electric push rod 16 pushes the movable block 17 to move towards the vertical stop bar 18 on the fixed frame 15, so that the vertical stop bar 18 on the movable block 17 and the vertical stop bar 18 on the fixed frame 15 are close to each other, thereby clamping them on both sides of the crankshaft. This can limit and fix the crankshaft, preventing the crankshaft from rotating during processing and affecting the processing accuracy.

[0025] The limiting mechanism has a support mechanism on its side that supports the bottom of the crankshaft. The support mechanism includes a transverse support plate 19 and a locking knob 20. The transverse support plate 19 is vertically slidably connected to the inside of the vertical stop bar 18 and can move up and down inside it. The transverse support plate 19 can support the bottom of the crankshaft. The locking knob 20 is threaded to the middle of the side of the transverse support plate 19 and can abut against the side of the vertical stop bar 18, which can fix the position of the transverse support plate 19. Loosening the locking knob 20 can allow the transverse support plate 19 to move up and down, so that the position of the transverse support plate 19 can be adjusted according to the rotation state of the crankshaft, so that the transverse support plate 19 can always abut against the bottom of the crankshaft. After the transverse support plate 19 is pressed against the bottom of the crankshaft, tightening the locking knob 20 can press against the side of the vertical stop bar 18, thereby locking and fixing the transverse support plate 19, which further supports and fixes the crankshaft.

[0026] In summary, the steps for using this forging fixture for irregularly shaped crankshaft forgings are as follows:

[0027] 1. First, place the crankshaft horizontally between the rotating frame 3 and the chuck 6, drive the second motor 9 to run, and drive the moving side plate 7 to move towards the fixed side plate 2 through the threaded screw 10, so that the rotating frame 3 is pressed against one end of the crankshaft and the other end of the crankshaft is clamped by the chuck 6.

[0028] 2. Move the sliding seat 4 to adjust the limiting mechanism and the support mechanism to a position that will not affect the crankshaft machining part. Then, use the hand crank screw 13 to adjust the fixing bracket 15 to a position that is vertically corresponding to the part of the crankshaft that needs to be fixed. Next, insert the vertical stop bar 18 on the fixing bracket 15 and drive the fixing bracket 15 to move again by using the hand crank screw 13 so that the vertical stop bar 18 at the top of it abuts against one side of the crankshaft.

[0029] 3. Then, install another vertical stop bar 18 on the movable block 17. Use the electric push rod 16 to move the vertical stop bar 18 on the movable block 17 closer to the other vertical stop bar 18 until the vertical stop bar 18 on the movable block 17 is pressed against the other side of the crankshaft. The two vertical stop bars 18 can clamp the crankshaft, thereby clamping and fixing the crankshaft to prevent it from rotating. At the same time, the transverse support plate 19 inside the two vertical stop bars 18 is pressed against the bottom of the crankshaft, further supporting the crankshaft and making the crankshaft more firmly fixed.

[0030] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A forging fixture for irregularly shaped crankshaft forgings, comprising a base (1) and a fixed side plate (2), characterized in that: The fixed side plate (2) is fixedly connected to one side of the upper surface of the base (1) and a rotating clamping mechanism is provided at the top. The side of the upper surface of the base (1) away from the fixed side plate (2) is provided with a movable side plate mechanism that can move laterally and a rotating frame (3) is provided at the top of the movable side plate mechanism. The upper surface of the base (1) is slidably connected to a sliding seat (4) and a manual adjustment mechanism is provided at the top of the sliding seat (4). Above the manual adjustment mechanism is a limiting mechanism that can fix and limit the crankshaft and a support mechanism that can support the bottom of the crankshaft is provided on the side of the limiting mechanism.

2. The forging fixture for irregularly shaped crankshaft forgings according to claim 1, characterized in that: The rotating clamping mechanism includes a first motor (5) and a chuck (6). The chuck (6) is connected to the output shaft end of the first motor (5) via a flange. The first motor (5) is fixedly connected to the side of the fixed side plate (2) away from the moving side plate mechanism.

3. A forging fixture for machining irregularly shaped crankshaft forgings according to claim 1, characterized in that: The movable side plate mechanism includes a movable side plate (7), a sliding sleeve (8), a second motor (9), and a threaded screw (10). The threaded screw (10) is rotatably connected to the middle of the upper surface of the base (1) and connected to the second motor (9) via a spline. Both ends of the bottom of the movable side plate (7) are fixedly connected to the sliding sleeve (8). The bottom end of the middle of the movable side plate (7) is connected to the outside of the threaded screw (10) via a threaded drive.

4. A forging fixture for machining irregularly shaped crankshaft forgings according to claim 1, characterized in that: The upper surface of the base (1) is provided with a first groove (11) and a slide rail (12) adapted to the slide sleeve (8) is fixedly connected inside the first groove (11). The slide sleeves (8) on both sides of the bottom of the movable side plate (7) are slidably connected to the outside of the two slide rails (12).

5. A forging fixture for irregularly shaped crankshaft forgings according to claim 1, characterized in that: The manual adjustment mechanism includes a hand crank screw (13), a screw slider (14), and a fixing frame (15). The hand crank screw (13) is rotatably connected to the top of the sliding seat (4), and the screw slider (14) is threadedly connected to the outside of the hand crank screw (13). The fixing frame (15) is fixedly connected to the top of the screw slider (14).

6. A forging fixture for machining irregularly shaped crankshaft forgings according to claim 5, characterized in that: The limiting mechanism includes an electric push rod (16), a movable block (17), and a vertical stop bar (18). The electric push rod (16) is fixedly installed on the side of the fixed frame (15) and its movable end passes through the inside of the fixed frame (15). The movable block (17) is fixedly connected to the end of the electric push rod (16). The upper surface of the fixed frame (15) away from the electric push rod (16) and the upper surface of the movable block (17) are both fitted with vertical stop bars (18).

7. A forging fixture for machining irregularly shaped crankshaft forgings according to claim 6, characterized in that: The support mechanism includes a horizontal support plate (19) and a locking knob (20). The horizontal support plate (19) is vertically slidably connected to the inside of the vertical baffle (18) and can move up and down inside it. The horizontal support plate (19) can be supported on the bottom of the crankshaft. The locking knob (20) is threadedly connected to the middle of the side of the horizontal support plate (19) and can abut against the side of the vertical baffle (18), thereby fixing the position of the horizontal support plate (19).

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