A crankshaft end face machining bracket

Abstract

This utility model relates to the field of motorcycle crankshaft processing technology, specifically to a crankshaft end face processing bracket. It includes a side frame fixedly connected to one side of a frame, with a screw rotatably connected to the inner side of the side frame. A nut seat is threadedly connected to one end of the screw. One side of the nut seat is fixedly connected to one side of a support plate. A support frame is fixedly connected to the top of the support plate, and a cylinder is bolted to one side of the outer wall of the support frame. A support plate is slidably connected to the inner side of the support frame, and a support frame is fixedly connected to the top of the support plate. The output shaft of the cylinder passes through the side wall of the support frame and is fixedly connected to one side of the support plate. This design enables lateral movement of the support plate and its upper components, solving the problem of difficult lateral position adjustment in existing brackets. It allows the crankshaft to be flexibly positioned horizontally according to processing requirements, adapting to crankshaft models of different lengths or installation bases.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle crankshaft processing technology, and in particular to a crankshaft end face processing bracket. Background Technology

[0002] Crankshaft end face machining refers to the machining of the two end faces (usually the front axle end and the rear flange end) of a motorcycle crankshaft during manufacturing and repair. This machining process, including turning, milling, or grinding, ensures the flatness, perpendicularity, and relative positional accuracy of the end faces with respect to the main journal. This step is crucial for ensuring crankshaft assembly accuracy and smooth operation. As a core moving component of an internal combustion engine, the machining quality of the crankshaft directly affects the engine's overall performance, vibration level, and service life.

[0003] Specifically, existing technologies, such as utility model patent CN221716695U, disclose a crankshaft end face processing bracket, which includes an L-shaped base, a sliding groove, a threaded rod, a moving plate driven by a first motor, a fixed plate, and a second motor. The moving plate and the limiting structure on the fixed plate cooperate to clamp different models of crankshafts. Although this improves the applicability of the equipment to a certain extent, the structure still has significant shortcomings in practical applications.

[0004] During crankshaft end-face machining, existing supports are inconvenient for positional adjustments, especially lateral and longitudinal ones, making crankshaft machining extremely difficult and significantly reducing overall efficiency and convenience. Therefore, to address these shortcomings, we urgently need an innovative crankshaft end-face machining support. Utility Model Content

[0005] The purpose of this utility model is to provide a crankshaft end face machining bracket, which solves the problem that the brackets in the prior art are not convenient for positional adjustment, especially for lateral and longitudinal adjustments, which makes crankshaft machining extremely inconvenient and greatly reduces the overall efficiency and convenience of crankshaft machining.

[0006] To achieve the above objectives, this utility model provides a crankshaft end face machining bracket, including a frame, a bearing plate slidably connected to the inner side of the frame, and a mounting plate fixedly connected to the top of the frame;

[0007] A side frame is fixedly connected to one side of the frame, and a screw is rotatably connected to the inner side of the side frame. A nut seat is threadedly connected to one end of the screw. One side of the nut seat is fixedly connected to one side of the support plate. A support frame is fixedly connected to the top of the support plate, and a cylinder is fixedly connected to one side of the outer wall of the support frame by bolts. A support plate is slidably connected to the inner side of the support frame, and a support frame is fixedly connected to the top of the support plate. The output shaft of the cylinder passes through the side wall of the support frame, and the output shaft of the cylinder is fixedly connected to one side of the support plate.

[0008] The support plate has sliders fixedly connected to both sides, and both sliders are slidably connected to the inner wall of the support frame through a groove.

[0009] Several side rods are fixedly connected to both sides of the bearing plate, and pulleys are fixedly connected to the bottom ends of the two side rods.

[0010] The outer wall of the side frame is bolted to a drive motor, and one end of the screw is rotatably connected to the inner wall of the side frame through a rotating shaft. The other end of the screw passes through the side wall of the side frame through a bearing sleeve.

[0011] One side of the nut seat is fixedly connected to a sliding block, and the sliding block is slidably connected to the inner wall of the side frame through a sliding groove.

[0012] One side of the nut seat is fixedly connected to a protrusion, and the protrusion passes through the side wall of the frame through the movable groove, and one side of the protrusion is fixedly connected to one side of the bearing plate.

[0013] This utility model discloses a crankshaft end face machining bracket. By incorporating a slidingly connected support plate within the frame, driven by a screw and nut seat within the side frame, the bracket achieves lateral movement of the support plate and its upper components. This solves the problem of difficult lateral position adjustment in existing brackets, allowing the crankshaft to be flexibly positioned horizontally according to machining requirements, adapting to crankshaft models of different lengths or installation bases. Simultaneously, by installing a cylinder on the support frame, whose output shaft is connected to a support plate, which is slidably connected inside the support frame and drives the top support frame to achieve longitudinal lifting, an independent longitudinal adjustment mechanism is formed. This effectively compensates for the lack of vertical fine-tuning capability in traditional brackets, enabling precise alignment of the crankshaft end face with the tool and improving machining flatness and perpendicularity accuracy. The coordinated operation of the lateral and longitudinal adjustment mechanisms significantly enhances the crankshaft's positioning flexibility and adjustment convenience in three-dimensional space. The system offers superior flexibility, avoiding the operational complexity and error accumulation associated with traditional methods that rely on shims, manual prying, or repeated disassembly and assembly. The mounting plate, located at the top of the frame, provides a stable and reliable mounting interface for external processing equipment, enhancing the overall system's integration and versatility. The support frame provides enveloping support for the crankshaft, combined with the smooth thrust of the cylinder, ensuring structural rigidity and vibration suppression during processing, reducing surface roughness or dimensional deviations caused by unstable support. The entire bracket structure is compact, with continuous and controllable adjustment, eliminating the need for frequent fastener disassembly. This significantly shortens clamping and tool setting time, improving processing efficiency. It is particularly suitable for crankshaft end-face processing scenarios involving multiple varieties, small batches, or requiring high-precision positioning, effectively reducing operator workload, improving processing consistency and product quality stability, and meeting the demands of modern engine manufacturing for flexible, high-precision processing equipment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the main structure of an embodiment of this utility model.

[0016] Figure 2 This is a side view structural diagram of an embodiment of the present utility model.

[0017] Figure 3 This is a top view of an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the side frame structure of an embodiment of the present utility model.

[0019] Figure 5 This is a schematic diagram of the support frame structure according to an embodiment of the present utility model.

[0020] 1. Frame; 2. Bearing plate; 3. Side rod; 4. Pulley; 5. Bearing frame; 6. Support plate; 7. Slider; 8. Slide groove; 9. Cylinder; 10. Support frame; 11. Mounting plate; 12. Drive motor; 13. Side frame; 14. Screw; 15. Nut seat; 16. Sliding block; 17. Sliding groove; 18. Protrusion; 19. Movable groove. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Please see Figure 1-5 .

[0023] A crankshaft end face machining bracket includes a frame 1, a bearing plate 2 slidably connected to the inner side of the frame 1, and a mounting plate 11 fixedly connected to the top of the frame 1.

[0024] A side frame 13 is fixedly connected to one side of the frame 1, and a screw 14 is rotatably connected to the inner side of the side frame 13. A nut seat 15 is threadedly connected to one end of the screw 14. One side of the nut seat 15 is fixedly connected to one side of the support plate 2. A support frame 5 is fixedly connected to the top of the support plate 2. A cylinder 9 is fixedly connected to one side of the outer wall of the support frame 5 by bolts. A support plate 6 is slidably connected to the inner side of the support frame 5. A support frame 10 is fixedly connected to the top of the support plate 6. The output shaft of the cylinder 9 passes through the side wall of the support frame 5 and is fixedly connected to one side of the support plate 6.

[0025] When using a crankshaft end face machining bracket, the crankshaft to be machined is first hoisted or manually placed into the support frame 10. The support frame 10 is located on top of the support plate 6, which is slidably connected to the inner side of the bearing frame 5. The bearing frame 5 is fixed to the bearing plate 2, which is slidably connected to the inner side of the frame 1 and can move smoothly along the length of the frame 1. Subsequently, the required end face machining equipment is installed on the mounting plate 11 on top of the frame 1, ensuring that the machining tool and the crankshaft end face maintain the correct relative position. When it is necessary to adjust the crankshaft position in the horizontal direction to accommodate different models or tool setting requirements, the operator manually or through a drive device rotates the screw 14 connected to the side frame 13. The screw 14 and the nut seat 15 are connected by a threaded connection. One side of the nut seat 15 is fixedly connected to the bearing plate 2. Therefore, the rotational movement of the screw 14 is converted into the nut seat 15 driving the bearing plate 2 to slide along the inner side of the frame 1, thereby... The bearing frame 5 and its supporting system are laterally displaced to allow for precise axial or lateral positioning of the crankshaft. When vertical height or feed adjustment of the crankshaft is required, cylinder 9, bolted to the outer wall of bearing frame 5, is activated. The output shaft of cylinder 9 passes through the side wall of bearing frame 5 and is fixedly connected to one side of support plate 6. The extension and retraction of cylinder 9 pushes support plate 6 to slide up and down within bearing frame 5, thereby driving the support frame 10 at the top of support plate 6 and the crankshaft therein to achieve longitudinal lifting and lowering adjustment. This allows for precise control of the relative distance and machining allowance between the crankshaft end face and the machining tool. Throughout the adjustment process, support frame 10 provides stable support for the crankshaft, preventing swaying or deformation caused by center of gravity shift. After adjustment, the relevant components are locked, and the machining equipment can be started to perform turning, milling, or grinding operations on the crankshaft end face. After completing one machining cycle, the above adjustment steps can be repeated to process the next workpiece.

[0026] Furthermore, sliders 7 are fixedly connected to both sides of the support plate 6, and both sliders 7 are slidably connected to the inner wall of the support frame 5 through the slide groove 8. When the cylinder 9 pushes the support plate 6 to move up and down, the sliders 7 slide along the slide groove 8, providing precise guidance and support for the lifting and lowering of the support plate 6, effectively preventing the support plate 6 from deflecting or getting stuck during the movement, thus improving the longitudinal adjustment stability and movement accuracy, while also enhancing the structural rigidity and load-bearing capacity of the support system.

[0027] Furthermore, several side rods 3 are fixedly connected to both sides of the bearing plate 2, and pulleys 4 are fixedly connected to the bottom of both side rods 3. When the bearing plate 2 slides along the inner side of the frame 1, the pulleys 4 contact the bottom of the frame 1 and roll, changing the original sliding friction into rolling friction, which significantly reduces the resistance when the bearing plate 2 moves, and achieves the effect of making the lateral adjustment more convenient and labor-saving. Especially when bearing a heavy crankshaft, it can still ensure smooth movement, improving the convenience of operation and response speed.

[0028] Furthermore, a drive motor 12 is fixedly connected to one side of the outer wall of the side frame 13 by bolts, and one end of the screw 14 is rotatably connected to the inner wall of the side frame 13 through a rotating shaft, while the other end of the screw 14 passes through the side wall of the side frame 13 through a bearing sleeve. After the drive motor 12 starts, it drives the screw 14 to rotate through the output shaft. The bearing sleeve provides radial support to ensure the stability of the screw 14 when rotating at high speed, while the rotating shaft ensures the free rotation of one end of the screw 14. This structure realizes reliable support and power input for the screw 14, achieving the effect of improving the automation level of lateral adjustment and transmission efficiency, while reducing mechanical wear and extending the service life of the screw 14.

[0029] Furthermore, a sliding block 16 is fixedly connected to one side of the nut seat 15, and the sliding block 16 is slidably connected to the inner wall of the side frame 13 through the sliding groove 17. When the screw 14 rotates and drives the nut seat 15 to move axially, the sliding block 16 slides synchronously in the sliding groove 17, which guides and limits the nut seat 15, preventing it from rotating with the screw 14. This achieves the effect of ensuring that the nut seat 15 only makes linear motion, improving the transmission accuracy and stability, and avoiding the failure of connection with the bearing plate 2 or the failure of adjustment due to the rotation of the nut seat 15.

[0030] Furthermore, a protrusion 18 is fixedly connected to one side of the nut seat 15, and the protrusion 18 passes through the side wall of the frame 1 through the movable groove 19. One side of the protrusion 18 is fixedly connected to one side of the bearing plate 2. The protrusion 18 serves as a rigid connector between the nut seat 15 and the bearing plate 2. When the nut seat 15 moves, it synchronously drives the bearing plate 2 to slide along the inner side of the frame 1. The movable groove 19 provides the allowable range of movement space for the lateral movement of the protrusion 18. This structure realizes the reliable transmission of power from the nut seat 15 to the bearing plate 2, achieving the effects of enhancing connection strength, ensuring transmission synchronization and reliability, and facilitating disassembly and maintenance, thereby improving the stability and durability of the overall structure.

[0031] In summary:

[0032] First, the crankshaft to be processed is placed stably in the support frame 10 by hoisting or manual operation. The support frame 10 is fixed to the top of the support plate 6. The support plate 6 is slidably connected to the sliding groove 8 on the inner wall of the bearing frame 5 by the sliders 7 fixed on both sides, ensuring that its vertical movement is stable and without deviation. The bearing frame 5 is fixed to the top of the bearing plate 2 by bolts. The bearing plate 2 is slidably connected to the inner side of the frame 1. Several side rods 3 are also fixedly connected to its two sides. The bottom end of the side rods 3 is equipped with pulleys 4. The pulleys 4 contact the bottom of the frame 1 and can roll. The movement significantly reduces the frictional resistance when the bearing plate 2 moves. When the crankshaft needs to be adjusted laterally, the drive motor 12 fixed to the outer wall of the side frame 13 is started. The output shaft of the drive motor 12 drives the screw 14 to rotate. One end of the screw 14 is rotatably connected to the inner wall of the side frame 13 through a rotating shaft, and the other end passes through the side wall of the side frame 13 through a bearing sleeve, ensuring stable rotation and reliable support. The screw 14 is connected to the nut seat 15 by threaded engagement. A sliding block 16 is fixed on one side of the nut seat 15 and is embedded in the inner wall of the side frame 13. The sliding groove 17 serves as a guide and anti-rotation mechanism, ensuring that the nut seat 15 can only move linearly along the axial direction of the screw 14. The nut seat 15 is also fixedly connected to the bearing plate 2 via a protrusion 18. The protrusion 18 passes through the movable groove 19 on the side wall of the frame 1 and moves synchronously with the bearing plate 2 within permissible limits, thereby transmitting the linear motion of the nut seat 15 to the bearing plate 2, causing it to slide left and right along the inner side of the frame 1, achieving precise lateral positioning of the crankshaft. When longitudinal adjustment is required, the cylinder 9 fixed to the outer wall of the bearing frame 5 is activated, and the output of the cylinder 9... The shaft passes through the side wall of the bearing frame 5 and is fixedly connected to one side of the support plate 6, pushing the support plate 6 together with the support frame 10 and the crankshaft to move up and down as a whole. The cooperation between the slider 7 and the slide groove 8 ensures that the lifting process is smooth and without shaking. After the adjustment is completed, the processing equipment is installed on the mounting plate 11 on the top of the frame 1, so that it is in the correct processing position with the crankshaft end face, and then end face turning, milling or grinding operations are performed. During the entire adjustment and processing process, all components work together to ensure that the crankshaft is accurately, stably and conveniently positioned and supported in multiple dimensions.The crankshaft end face machining bracket drives the screw 14 to rotate via the drive motor 12, which in turn moves the nut seat 15. The lateral adjustment of the load-bearing system is achieved through the connection between the protrusion 18 and the bearing plate 2, solving the problems of inconvenient bracket adjustment and difficulty in precise positioning in existing technologies, thus improving the automation and efficiency of adjustment. The pulley 4 reduces resistance during the sliding process of the bearing plate 2, making operation easier and less strenuous, especially suitable for applications involving heavy crankshafts. The screw 14 is supported at both ends by a rotating shaft and bearing sleeves, ensuring structural stability, smooth rotation, and extending the service life of the transmission components. The cooperation between the sliding block 16 and the sliding groove 17 effectively prevents the nut seat 15 from rotating with the screw 14, ensuring it only performs linear motion, thus improving the accuracy and reliability of the transmission. The structural design of the protrusion 18 and the movable groove 19 achieves a rigid connection between the nut seat 15 and the bearing plate 2 and reliable power transmission. The support plate 6, through the cooperation of the slider 7 and the slide groove 8, achieves longitudinal motion guidance, making the lifting process driven by the cylinder 9 smooth and without deflection, thus improving the longitudinal adjustment accuracy and support rigidity. The support frame 10 provides stable support for the crankshaft, avoiding deformation or displacement caused by vibration or center of gravity shift during processing. The mounting plate 11 provides a stable mounting platform for external processing equipment, enhancing the system's integration and versatility. The entire bracket structure is reasonably designed, with independent and controllable lateral and longitudinal adjustment mechanisms, a large adjustment range, and high precision. This significantly improves the positioning efficiency and ease of operation of crankshaft end face processing, effectively shortens clamping and tool setting time, reduces the labor intensity of operators, improves processing consistency and product quality stability, and meets the flexible processing requirements of modern engine manufacturing for high precision, high efficiency, and multi-model compatibility.

[0033] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A crankshaft end face machining bracket, comprising a frame, characterized in that, It also includes a load-bearing plate that slides on the inner side of the frame, and an installation plate that is fixedly connected to the top of the frame; A side frame is fixedly connected to one side of the frame, and a screw is rotatably connected to the inner side of the side frame. A nut seat is threadedly connected to one end of the screw. One side of the nut seat is fixedly connected to one side of the support plate. A support frame is fixedly connected to the top of the support plate, and a cylinder is fixedly connected to one side of the outer wall of the support frame by bolts. A support plate is slidably connected to the inner side of the support frame, and a support frame is fixedly connected to the top of the support plate. The output shaft of the cylinder passes through the side wall of the support frame, and the output shaft of the cylinder is fixedly connected to one side of the support plate.

2. The crankshaft end face machining bracket as described in claim 1, characterized in that, Both sides of the support plate are fixedly connected to sliders, and both sliders are slidably connected to the inner wall of the support frame through a sliding groove.

3. The crankshaft end face machining bracket as described in claim 1, characterized in that, Several side rods are fixedly connected to both sides of the bearing plate, and pulleys are fixedly connected to the bottom ends of the two side rods.

4. The crankshaft end face machining bracket as described in claim 1, characterized in that, A drive motor is fixedly connected to one side of the outer wall of the side frame by bolts, and one end of the screw is rotatably connected to the inner wall of the side frame through a rotating shaft, and the other end of the screw passes through the side wall of the side frame through a bearing sleeve.

5. A crankshaft end face machining bracket as described in claim 1, characterized in that, A sliding block is fixedly connected to one side of the nut seat, and the sliding block is slidably connected to the inner wall of the side frame through a sliding groove.

6. The crankshaft end face machining bracket as described in claim 1, characterized in that, A protrusion is fixedly connected to one side of the nut seat, and the protrusion passes through the side wall of the frame through the movable groove, and one side of the protrusion is fixedly connected to one side of the bearing plate.

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