Cutting device and method for machining bicycle crank

Abstract

The invention relates to the field of crank machining, in particular to a cutting device and method for bicycle crank machining. The cutting device for machining the bicycle crank comprises a workbench; the moving assembly, the angle adjusting assembly and the cutting assembly are arranged above the workbench; the fixing assembly is arranged at the top of the workbench; wherein two sets of abutting pieces are arranged in the fixing assembly, and the two sets of abutting pieces can move up and down and rotate so as to fix the crank. According to the cutting device for bicycle crank machining and the method thereof, the fixing assembly is arranged, cranks of different shapes and sizes can be effectively fixed through the abutting part in the fixing assembly, the abutting part is moved up and down and rotated, so that the abutting pad is moved to the position above the crank to make contact with the crank, and the cutting effect is improved. The elastic force of the first reset spring is utilized to enable the abutting plate and the abutting pad to generate pressure on the crank, and therefore the crank is fixed.

Description

Technical Field

[0001] The invention relates to the field of crank processing, and in particular to a cutting device and a method for processing a bicycle crank. Background Art

[0002] The processing of bicycle cranks usually includes multiple steps, among which cutting is a key step. Although the main shape and structure of the crank are formed by processes such as forging, casting or extrusion, cutting operations are still required during the processing. During the forging, casting or extrusion process, the size of the crank may deviate from the design requirements. Through the cutting operation, the length, width or thickness of the crank can be accurately adjusted to ensure that it meets the design requirements. And the shape of the crank may need to be modified to meet specific functional requirements or appearance requirements. At present, due to the diversity of the shapes and sizes of the cranks, the existing cutting devices for bicycle crank processing have great difficulties in fixing different cranks, resulting in poor adaptability and versatility, thereby affecting the accuracy and efficiency of the cutting operation.

[0003] Therefore, it is necessary to provide a new bicycle crank cutting device and method to solve the above-mentioned technical problems. Summary of the invention

[0004] In order to overcome the defects of the prior art, a cutting device and method for processing a bicycle crank are provided to solve the above-mentioned problems.

[0005] The cutting device and method for processing a bicycle crank provided by the present invention comprise: a workbench; a moving assembly, an angle adjustment assembly and a cutting assembly arranged above the workbench, and; a fixing assembly arranged on the top of the workbench; wherein two groups of abutment members are arranged in the fixing assembly, and both groups of abutment members can move up and down and rotate to fix the crank; the angle adjustment assembly is located between the moving assembly and the cutting assembly, and is used to adjust the cutting angle of the cutting assembly after fixing the crank; the abutment member comprises two oppositely arranged pressure plates, and both pressure plates are located on the top of the workbench, the bottoms of the two pressure plates relatively close to one side are connected to telescopic rods, the bottoms of the two telescopic rods are connected to abutment plates, and the bottoms of the abutment plates are connected to abutment pads, and the outer side of the telescopic rod is sleeved with a return spring 1, and the return spring 1 is located between the pressure plate and the abutment plate.

[0006] Preferably, abutment grooves are provided on the relatively close sides of the two pressure plates, abutment blocks are slidably connected in the two abutment grooves, guide rods are connected to the tops of the two abutment blocks, guide grooves for the guide rods to slide are provided on the tops of the pressure plates, two return springs 2 are arranged in the abutment grooves, and one end of the two return springs 2 abuts against the limiting blocks, and the side of the limiting blocks away from the return spring 2 abuts against the abutment block.

[0007] Preferably, the fixing assembly includes a bidirectional screw rod installed with a bracket to the bottom of the workbench, and thread blocks are threadedly connected to the outer sides of both ends of the bidirectional screw rod, and moving rods are connected to both ends of the two threaded blocks, and each of the moving rods is connected to a toothed plate on the side away from the threaded block, and each of the toothed plates is meshed with a gear on the side away from the moving rod, and the top of each gear is rotatably connected to the bottom of the workbench, and a first driving member for driving the bidirectional screw rod to rotate is installed on one side of one of the brackets.

[0008] Preferably, the inner side of each gear is slidably connected with a lifting rod, a key is provided on the inner side of the gear, a key slot for the key to slide is provided on the outer side of the lifting rod, the top of each lifting rod passes through the workbench and is connected to the bottom of the pressure plate, the bottom of each lifting rod is connected to a connecting plate, and the end of each connecting plate away from the lifting rod is commonly connected to a lifting plate, and two second driving members for driving the lifting plate to reciprocate are installed at the bottom of the workbench.

[0009] Preferably, the moving assembly includes electric push rods connected to the four corners of the top of the workbench, the top of each of the electric push rods is commonly connected to a support frame, a transverse moving frame is provided on the top of the support frame, both ends of the bottom of the transverse moving frame are connected to transverse guide blocks, and transverse guide grooves for the transverse guide blocks to slide are provided on both sides of the top of the support frame, a transverse screw rod is rotatably connected inside the transverse moving frame, the outer side of the transverse screw rod is threadedly connected to a transverse screw block, and a third driving member for driving the transverse screw rod to rotate is installed on one side of the transverse moving frame.

[0010] Preferably, a vertical moving frame is provided at the bottom of the support frame, and the vertical moving frame and the horizontal moving frame are arranged in a cross shape, vertical guide blocks are connected to both ends of the top of the vertical moving frame, and vertical guide grooves for sliding of the vertical guide blocks are opened on both sides of the bottom of the support frame, a vertical screw rod is rotatably connected inside the vertical moving frame, a vertical screw block is threadedly connected to the outer side of the vertical screw rod, the top of the vertical screw block is connected to the bottom of the horizontal screw block through a connecting shaft, and a fourth driving member for driving the vertical screw rod to rotate is installed on one side of the vertical moving frame.

[0011] Preferably, the angle adjustment assembly includes an adjustment plate connected to the bottom of the vertical wire block, the inner bottom wall of the adjustment plate is rotatably connected to a worm wheel, one side of the worm wheel is meshingly connected to a worm, both ends of the worm are rotatably connected to the inner side wall of the adjustment plate, and a fifth driving member for driving the worm to rotate is installed on one side of the adjustment plate.

[0012] Preferably, the angle adjustment assembly also includes an n-type frame, and the top of the n-type frame passes through the bottom of the adjustment plate through a transmission shaft and is connected to the bottom of the worm gear, a protective shell is provided on the inner side of the n-type frame, both sides of the protective shell are rotatably connected to the inner side of the n-type frame, a half-face gear ring is connected to the top of the protective shell, the inner side of the half-face gear ring is connected to the two sides of the protective shell through a plurality of support rods, the top of the half-face gear ring is meshingly connected with a spur gear, both sides of the spur gear are connected to the inner top of the n-type frame through a mounting plate, and a sixth driving member for driving the spur gear to rotate is installed on one side of one of the mounting plates.

[0013] Preferably, the cutting assembly comprises a cutting knife rotatably connected to the protective shell, and a seventh driving member for driving the cutting knife to rotate is installed on one side of the protective shell.

[0014] Preferably, in step 1, the crank is placed on the top of the workbench and fixed by a pressing plate in the fixing assembly;

[0015] Step 2: Start the seventh driving member to rotate the cutting blade;

[0016] Step 3: The worm is driven to rotate by the fifth driving member, and the transmission of the worm wheel and the transmission shaft drives the n-shaped frame and the protective shell to rotate, so as to achieve the angle adjustment of the cutting assembly in the horizontal direction, and the sixth driving member is cooperated to drive the spur gear to rotate, and the transmission of the half-face gear ring drives the protective shell and the cutting assembly to rotate, so as to achieve the precise angle adjustment of the cutting assembly in the inclined direction;

[0017] Step 4: By controlling the electric push rod to cooperate with the third drive member and the fourth drive member, the cutting assembly can move in the three directions of X, Y, and Z to provide accurate positioning and cutting path for the cutting process of the crank.

[0018] Compared with the related art, the bicycle crank cutting device and method provided by the present invention have the following beneficial effects:

[0019] The present invention provides a fixing component, and the abutment member in the fixing component can effectively fix cranks of different shapes and sizes. The abutment pad is moved to the top of the crank and contacts the crank by moving the abutment member up and down and rotating the abutment member. The elastic force of the return spring 1 is utilized to make the abutment plate and the abutment pad generate pressure on the crank, thereby fixing the crank. Alternatively, the pressure plate is moved to both sides of the crank and then rotated to make the abutment block abut against both sides of the crank to form a clamping force. The cooperation of the return spring 2 and the limit block keeps the abutment block stable in the abutment groove, and can be adaptively adjusted according to the shape and size of the crank.

[0020] The present invention sets a moving component, and the moving component can realize high-precision movement of the cutting component on the X, Y and Z axes, thereby providing accurate positioning and path for crank cutting. The electric push rod and the support frame cooperate to adjust the height of the cutting component; the horizontal moving frame cooperates with the horizontal lead screw to realize precise movement in the X-axis direction; the vertical moving frame and the vertical lead screw are linked to realize precise movement in the Y-axis direction. The moving component can quickly adjust the position of the cutting component, thereby reducing positioning time and improving processing efficiency.

[0021] The present invention provides an angle adjustment component, and the angle adjustment component can enable the cutting component to achieve high-precision angle adjustment in the horizontal and inclined directions, thereby meeting the cutting requirements for different angles of the crank and improving processing efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a preferred embodiment of a cutting device and method for machining a bicycle crank provided by the present invention;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure viewed from above is shown;

[0024] Figure 3 for Figure 1 The front view of the structure is shown;

[0025] Figure 4 for Figure 1 A schematic structural diagram of the abutment member shown;

[0026] Figure 5 for Figure 1 The structural schematic diagram of the angle adjustment assembly shown;

[0027] Figure 6 for Figure 1 A schematic diagram of the structure of the fixing component shown.

[0028] Numbers in the figure: 1. workbench; 2. pressure plate; 21. telescopic rod; 22. abutment plate; 23. abutment pad; 24. reset spring 1; 25. abutment block; 26. guide rod; 27. reset spring 2; 28. limit block; 3. bidirectional screw; 31. threaded block; 32. moving rod; 33. tooth plate; 34. gear; 35. lifting rod; 36. connecting plate; 37. lifting plate; 4. electric push rod; 41. support frame; 42. horizontal moving frame; 43. horizontal screw rod; 44. horizontal screw block; 45. vertical moving frame; 46. vertical guide block; 47. vertical screw rod; 48. vertical screw block; 49. horizontal guide block; 5. adjustment plate; 51. worm wheel; 52. worm; 6. n-type frame; 61. protective shell; 62. half-face gear ring; 63. spur gear; 7. cutting knife. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0031] The embodiment of the present invention provides a cutting device and method for processing a bicycle crank, and the cutting device and method for processing a bicycle crank include: a workbench 1; a moving component, an angle adjustment component and a cutting component arranged above the workbench 1, and a fixing component arranged on the top of the workbench 1; wherein two groups of abutment members are arranged in the fixing component, and both groups of abutment members can move up and down and rotate to fix the crank; the angle adjustment component is located between the moving component and the cutting component, and is used to adjust the cutting angle of the cutting component after the crank is fixed; the abutment member includes two opposing pressure plates 2, and the two pressure plates 2 are both located on the top of the workbench 1, and the bottoms of the two pressure plates 2 relatively close to one side are connected A telescopic rod 21 is connected, and the bottom of the two telescopic rods 21 is connected to an abutment plate 22, and the bottom of the abutment plate 22 is connected to an abutment pad 23. A return spring 24 is sleeved on the outer side of the telescopic rod 21, and the return spring 24 is located between the pressure plate 2 and the abutment plate 22. Abutment grooves are provided on the relatively close sides of the two pressure plates 2, and abutment blocks 25 are slidably connected in the two abutment grooves. The tops of the two abutment blocks 25 are connected to guide rods 26. The top of the pressure plate 2 is provided with a guide groove for the guide rod 26 to slide. The abutment groove is provided with two return springs 27, and one end of the two return springs 27 abuts against a limiting block 28, and the side of the limiting block 28 away from the return spring 27 abuts against the abutment block 25.

[0032] It should be noted that the workbench 1 serves as the basis of the entire device and is used to support other components. The moving component is arranged above the workbench 1 and is responsible for adjusting the position of the cutting component to achieve precise positioning of the crank. The angle adjustment component is located between the moving component and the cutting component and is used to adjust the cutting angle of the cutting component to meet the cutting requirements at different angles. The cutting component is used to cut the crank and perform cutting operations according to the set cutting angle and path. The fixed component is arranged on the top of the workbench 1 and is used to fix the crank to ensure the stability and accuracy of the cutting process. Two sets of abutments are arranged in the fixed component, and each set of abutments includes two opposing pressure plates 2. The pressure plate 2 is located at the top of the workbench 1 and is used to clamp or press the crank. The bottom of each pressure plate 2 is connected to a telescopic rod 21, which can move up and down, thereby driving the abutment plate 22 and the abutment pad 23 to abut the crank. The reset spring 24 is sleeved on the outside of the telescopic rod 21, located between the pressure plate 2 and the abutment plate 22, and provides elastic force so that the abutment can adapt to cranks of different thicknesses. The abutment groove is used to accommodate the abutment block 25, and the abutment block 25 is slidably connected in the abutment groove for further adjusting the abutment position. The guide rod 26 is connected to the top of the abutment block 25 for guiding the sliding of the abutment block 25. The guide groove is provided at the top of the pressure plate 2 for the guide rod 26 to slide, ensuring the correct sliding direction of the abutment block 25. The reset spring 27 and the limit block 28 are located in the abutment groove for providing elastic force and limiting the sliding range of the abutment block 25. Move up and down and rotate the abutment member: move the abutment pad 23 to the top of the crank and contact the crank, and use the elastic force of the reset spring 24 to make the abutment plate 22 and the abutment pad 23 exert pressure on the crank, thereby fixing the crank. Move the pressure plate 2 to both sides of the crank and rotate it: the abutment block 25 abuts against both sides of the crank to form a clamping force, and the cooperation of the return spring 27 and the limit block 28 keeps the abutment block 25 stable in the abutment groove and can be adaptively adjusted according to the shape and size of the crank.

[0033] In an embodiment of the present invention, the fixing assembly includes a bidirectional screw rod 3 installed with a bracket at the bottom of the workbench 1, and the outer sides of both ends of the bidirectional screw rod 3 are threadedly connected with thread blocks 31, and the two ends of the two thread blocks 31 are connected with moving rods 32, and each moving rod 32 is connected with a tooth plate 33 on the side away from the thread block 31, and each tooth plate 33 is meshed with a gear 34 on the side away from the moving rod 32. The top of each gear 34 is rotatably connected to the bottom of the workbench 1, and a first driving member for driving the bidirectional screw rod 3 to rotate is installed on one side of one of the brackets, and a lifting rod 35 is slidably connected to the inner side of each gear 34. A key is provided on the inner side of the gear 34, and a key slot for the key to slide is provided on the outer side of the lifting rod 35. The top of each lifting rod 35 passes through the workbench 1 and is connected to the bottom of the pressing plate 2, and the bottom of each lifting rod 35 is connected with a connecting plate 36, and one end of each connecting plate 36 away from the lifting rod 35 is commonly connected with a lifting plate 37, and two second driving members for driving the lifting plate 37 to reciprocate are installed at the bottom of the workbench 1.

[0034] It should be noted that: the bidirectional screw 3 is installed at the bottom of the workbench 1 through a bracket, and the outer sides of both ends thereof are threadedly connected with thread blocks 31. The first driving member is an electric motor that drives the bidirectional screw 3 to rotate, so that the two thread blocks 31 move toward or away from each other on the bidirectional screw 3. A moving rod 32 is connected to both ends of each thread block 31, and a tooth plate 33 is connected to the side of the moving rod 32 away from the thread block 31. When the thread block 31 moves, the tooth plate 33 is driven to move by the moving rod 32. A gear 34 is meshedly connected to the side of each tooth plate 33 away from the moving rod 32. The top of the gear 34 is rotatably connected to the bottom of the workbench 1, and a lifting rod 35 is slidably connected to the inner side of the gear 34. A key is provided on the inner side of the gear 34, and a key slot for the key to slide is provided on the outer side of the lifting rod 35. When the tooth plate 33 moves, the gear 34 is rotated to the bottom of the workbench 1, and the lifting rod 35 is slidably connected to the inner side of the gear 34. A key is provided on the inner side of the gear 34, and a key slot for the key to slide is provided on the outer side of the lifting rod 35. When the lifting rod 35 is driven to rotate by the gear 34, the pressing plate 2 is rotated, and the bottom of each lifting rod 35 is connected with a connecting plate 36, and the end of all connecting plates 36 away from the lifting rod 35 is commonly connected with a lifting plate 37. Two second driving members are installed at the bottom of the workbench 1. The second driving member is an electric push rod, which is used to drive the lifting plate 37 to reciprocate. When the second driving member is working, the lifting plate 37 drives the connecting plate 36 and the lifting rod 35 to move up and down, thereby realizing the up and down movement of the pressing plate 2. The first driving member drives the bidirectional screw 3 to rotate, so that the two threaded blocks 31 move toward each other, and drives the gear 34 to rotate through the moving rod 32 and the toothed plate 33. The rotation of the gear 34 drives the pressing plate 2 to move to the top of the crank through the lifting rod 35. The second driving member drives the lifting plate 37 to reciprocate, and drives the pressing plate 2 to move up and down through the connecting plate 36 and the lifting rod 35, so that the abutment pad 23 contacts the crank and generates pressure, thereby fixing the crank. Alternatively, the pressing plate 2 is moved to both sides of the crank by the second driving member, and then the gear 34 is driven to rotate by the first driving member to drive the pressing plate 2 to abut against both sides of the crank for clamping and fixing.

[0035] In the embodiment of the present invention, the moving assembly includes an electric push rod 4 connected to the four corners of the top of the workbench 1, and the top of each electric push rod 4 is commonly connected to a support frame 41, and a lateral moving frame 42 is arranged on the top of the support frame 41. Both ends of the bottom of the lateral moving frame 42 are connected to lateral guide blocks 49, and both sides of the top of the support frame 41 are provided with lateral guide grooves for the lateral guide blocks 49 to slide. A lateral screw rod 43 is rotatably connected in the lateral moving frame 42, and a lateral screw block 44 is threadedly connected to the outer side of the lateral screw rod 43. A third drive for driving the lateral screw rod 43 to rotate is installed on one side of the lateral moving frame 42. A vertical moving frame 45 is arranged at the bottom of the support frame 41, and the vertical moving frame 45 and the horizontal moving frame 42 are arranged in a cross shape. Both ends of the top of the vertical moving frame 45 are connected with vertical guide blocks 46. Both sides of the bottom of the support frame 41 are provided with vertical guide grooves for the vertical guide blocks 46 to slide. A vertical screw rod 47 is rotatably connected inside the vertical moving frame 45, and a vertical wire block 48 is threadedly connected to the outer side of the vertical screw rod 47. The top of the vertical wire block 48 is connected to the bottom of the horizontal wire block 44 through a connecting shaft, and a fourth driving member for driving the vertical screw rod 47 to rotate is installed on one side of the vertical moving frame 45.

[0036] It should be noted that: the four corners of the top of the workbench 1 are connected to electric push rods 4, and the top of the electric push rods 4 is commonly connected to a support frame 41. By controlling the extension and retraction of the electric push rods 4, the height of the support frame 41 can be accurately adjusted, thereby realizing the movement of the cutting assembly in the Z-axis direction. A lateral moving frame 42 is provided on the top of the support frame 41, and lateral guide blocks 49 are connected to the bottom ends of the lateral moving frame 42. Both sides of the top of the support frame 41 are provided with lateral guide grooves for the lateral guide blocks 49 to slide. This design ensures that the lateral moving frame 42 slides smoothly and accurately on the support frame 41. A lateral screw rod 43 is rotatably connected inside the lateral moving frame 42, and a lateral wire block 44 is threadedly connected to the outer side of the lateral screw rod 43. The third driving member is a motor, which drives the lateral screw rod 43 to rotate, so that the lateral wire block 44 moves on the lateral screw rod 43, thereby realizing the precise movement of the cutting assembly in the X-axis direction. A vertical moving frame 45 is provided at the bottom of the support frame 41, and the vertical moving frame 45 and the horizontal moving frame 42 are arranged in a cross shape to realize the independent movement of the cutting assembly in the X and Y axis directions. The top two ends of the vertical moving frame 45 are connected with vertical guide blocks 46, and the bottom two sides of the support frame 41 are provided with vertical guide grooves for the vertical guide blocks 46 to slide, so as to ensure that the vertical moving frame 45 slides smoothly and accurately on the support frame 41. A vertical screw rod 47 is rotatably connected in the vertical moving frame 45, and a vertical wire block 48 is threadedly connected to the outer side of the vertical screw rod 47. The top of the vertical wire block 48 is connected to the bottom of the horizontal wire block 44 through a connecting shaft, so that the X and Y axis movement of the cutting assembly can be carried out in coordination. The fourth driving member is a motor, which drives the vertical screw rod 47 to rotate, so that the vertical wire block 48 moves on the vertical screw rod 47, thereby realizing the precise movement of the cutting assembly in the Y axis direction. By controlling the extension and retraction of the electric push rod 4, the height of the support frame 41 is adjusted, thereby adjusting the height position of the cutting assembly. The third driving member drives the horizontal screw rod 43 to rotate, so that the horizontal wire block 44 moves on the horizontal screw rod 43, and drives the vertical wire block 48 and the vertical moving frame 45 to move in the X-axis direction through the connecting shaft, thereby adjusting the horizontal position of the cutting assembly. The fourth driving member drives the vertical screw rod 47 to rotate, so that the vertical wire block 48 moves on the vertical screw rod 47, and drives the horizontal wire block 44 and the horizontal moving frame 42 to move in the Y-axis direction through the connecting shaft, thereby adjusting the vertical position of the cutting assembly. Through the cooperation of the above components, the moving component can realize the precise movement of the cutting component in the three directions of X, Y, and Z, providing accurate positioning and cutting path for the cutting process of the crank.

[0037] In an embodiment of the present invention, the angle adjustment assembly includes an adjustment plate 5 connected to the bottom of the vertical wire block 48, the inner bottom wall of the adjustment plate 5 is rotatably connected to a worm wheel 51, one side of the worm wheel 51 is meshedly connected to a worm 52, both ends of the worm 52 are rotatably connected to the inner side wall of the adjustment plate 5, and a fifth driving member for driving the worm 52 to rotate is installed on one side of the adjustment plate 5, and the angle adjustment assembly also includes an n-type frame 6, and the top of the n-type frame 6 passes through the bottom of the adjustment plate 5 through a transmission shaft and is connected to the bottom of the worm wheel 51. A protective shell 61 is provided on the inner side of the n-type frame 6, and both sides of the protective shell 61 are rotatably connected to the inner side of the n-type frame 6. A half-face gear ring 62 is connected to the top of the protective shell 61, and the inner side of the half-face gear ring 62 is connected to the two sides of the protective shell 61 through a plurality of support rods. A spur gear 63 is meshedly connected to the top of the half-face gear ring 62, and both sides of the spur gear 63 are connected to the inner top of the n-type frame 6 through mounting plates, and a sixth driving member for driving the spur gear 63 to rotate is installed on one side of one of the mounting plates.

[0038] It should be noted that: the adjustment plate 5 is connected to the bottom of the vertical wire block 48, and the inner bottom wall thereof is rotatably connected to a worm gear 51. A worm 52 is meshingly connected to one side of the worm gear 51, and both ends of the worm gear 52 are rotatably connected to the inner wall of the adjustment plate 5. The fifth driving member is an electric motor, which drives the worm 52 to rotate and utilizes the transmission action of the worm gear 51 to drive the protective shell 61 in the n-type frame 6 to rotate, thereby realizing the horizontal angle adjustment of the cutting assembly. The top of the n-type frame 6 passes through the bottom of the adjustment plate 5 through a transmission shaft and is connected to the bottom of the worm gear 51. The protective shell 61 is not only used to protect the cutting assembly, but also provides it with a stable working environment. A half-face gear ring 62 is connected to the top of the protective shell 61, and the inner side of the half-face gear ring 62 is connected to the two sides of the protective shell 61 through a plurality of support rods. The top of the half-face gear ring 62 is meshed with a spur gear 63, and both sides of the spur gear 63 are connected to the inner top of the n-shaped frame 6 through a mounting plate. The sixth driving member is a combination of a motor and a brake, which drives the spur gear 63 to rotate, and utilizes the transmission effect of the half-face gear ring 62 to drive the protective shell 61 and the cutting assembly to rotate, thereby achieving precise tilt angle adjustment of the cutting assembly. The angle adjustment assembly can achieve high-precision angle adjustment of the cutting assembly in the horizontal and tilt directions, meet the cutting requirements of different angles of the crank, and improve processing efficiency and quality.

[0039] In the embodiment of the present invention, the cutting assembly includes a cutting knife 7 rotatably connected to the protective shell 61 , and a seventh driving member for driving the cutting knife 7 to rotate is installed on one side of the protective shell 61 .

[0040] It should be noted that the seventh driving member is an electric motor, which drives the cutting knife 7 to rotate. By controlling the speed and direction of the seventh driving member, the crank can be cut. After the seventh driving member is started, the power is transmitted to the cutting knife 7, so that the cutting knife 7 rotates in the protective shell 61, and the rotating cutting knife 7 cuts the crank fixed on the workbench 1.

[0041] In the embodiment of the present invention; Step 1, place the crank on the top of the workbench 1, and fix the crank by the pressure plate 2 in the fixing assembly;

[0042] Step 2: Start the seventh driving member to rotate the cutting blade 7;

[0043] Step 3: The worm 52 is driven to rotate by the fifth driving member, and the transmission of the worm wheel 51 and the transmission shaft drives the n-shaped frame 6 and the protective shell 61 to rotate, so as to achieve the angle adjustment of the cutting assembly in the horizontal direction, and the spur gear 63 is driven to rotate by the sixth driving member, and the protective shell 61 and the cutting assembly are driven to rotate by the transmission of the half-face gear ring 62, so as to achieve the precise angle adjustment of the cutting assembly in the inclined direction;

[0044] Step 4: By controlling the electric push rod 4 to cooperate with the third driving member and the fourth driving member, the cutting assembly can move in the three directions of X, Y and Z to provide accurate positioning and cutting path for the cutting process of the crank.

[0045] It should be noted that: Positioning crank: Place the crank on the top of the workbench 1, the first driving member drives the bidirectional screw 3 to rotate, so that the two threaded blocks 31 move toward each other, and the gear 34 is driven to rotate through the moving rod 32 and the toothed plate 33. The rotation of the gear 34 drives the pressing plate 2 to move to the top or both sides of the crank through the lifting rod 35, and the second driving member drives the lifting plate 37 to reciprocate, and drives the pressing plate 2 to move up and down through the connecting plate 36 and the lifting rod 35, so that the abutment pad 23 contacts with the crank and generates pressure, so as to fix the crank. Or the pressing plate 2 is moved to both sides of the crank through the second driving member, and then the gear 34 is driven to rotate through the first driving member, so as to drive the pressing plate 2 to abut against both sides of the crank for clamping and fixing. Start the seventh driving member to rotate the cutting knife 7 to prepare for the cutting operation. Horizontal angle adjustment: The fifth driving member drives the worm 52 to rotate, and drives the n-type frame 6 and the protective shell 61 to rotate through the transmission of the worm wheel 51 and the transmission shaft, so as to realize the angle adjustment of the cutting assembly in the horizontal direction. Tilt angle adjustment: The sixth drive member drives the spur gear 63 to rotate, and through the transmission of the half-face gear ring 62, drives the protective shell 61 and the cutting assembly to rotate, thereby realizing precise angle adjustment of the cutting assembly in the tilt direction. Adjust the height: By controlling the extension and retraction of the electric push rod 4, the height of the support frame 41 is adjusted, thereby adjusting the height position of the cutting assembly. Horizontal movement: The third drive member drives the horizontal screw rod 43 to rotate, so that the horizontal wire block 44 moves on the horizontal screw rod 43, and drives the vertical wire block 48 and the vertical moving frame 45 to move in the X-axis direction through the connecting shaft, thereby adjusting the horizontal position of the cutting assembly. Vertical movement: The fourth drive member drives the vertical screw rod 47 to rotate, so that the vertical wire block 48 moves on the vertical screw rod 47, and drives the horizontal wire block 44 and the horizontal moving frame 42 to move in the Y-axis direction through the connecting shaft, thereby adjusting the vertical position of the cutting assembly.

[0046] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0047] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A cutting device for processing a bicycle crank, characterized in that: include: Workbench (1); A moving assembly, an angle adjustment assembly and a cutting assembly arranged above the workbench (1), and; A fixing component arranged on the top of the workbench (1); Wherein, two groups of abutment members are arranged in the fixing assembly, and both groups of abutment members can move up and down and rotate to fix the crank; The angle adjustment assembly is located between the moving assembly and the cutting assembly, and is used to adjust the cutting angle of the cutting assembly after the crank is fixed; The abutment member comprises two opposing pressure plates (2), and the two pressure plates (2) are both located on the top of the workbench (1); the bottoms of the two pressure plates (2) on one side relatively close to each other are connected to telescopic rods (21); the bottoms of the two telescopic rods (21) are both connected to abutment plates (22), and the bottoms of the abutment plates (22) are connected to abutment pads (23); a return spring (24) is sleeved on the outer side of the telescopic rod (21), and the return spring (24) is located between the pressure plate (2) and the abutment plate (22).

2. The cutting device for processing a bicycle crank according to claim 1, characterized in that: Abutment grooves are provided on the relatively close sides of the two pressure plates (2), and abutment blocks (25) are slidably connected in the two abutment grooves. The tops of the two abutment blocks (25) are connected to guide rods (26). The tops of the pressure plates (2) are provided with guide grooves for the guide rods (26) to slide. The abutment grooves are provided with two return springs (27), and one end of the two return springs (27) abuts against a limiting block (28). The side of the limiting block (28) away from the return spring (27) abuts against the abutment block (25).

3. The bicycle crank cutting device according to claim 2, characterized in that: The fixing assembly comprises a bidirectional screw (3) mounted on the bottom of the workbench (1) via a bracket, and both ends of the bidirectional screw (3) are threadedly connected to threaded blocks (31), and both ends of the two threaded blocks (31) are connected to moving rods (32), and each of the moving rods (32) is connected to a toothed plate (33) on the side away from the threaded block (31), and each of the toothed plates (33) is meshingly connected to a gear (34) on the side away from the moving rod (32), and the top of each gear (34) is rotatably connected to the bottom of the workbench (1), and a first driving member for driving the bidirectional screw (3) to rotate is installed on one side of one of the brackets.

4. The bicycle crank cutting device according to claim 3, characterized in that: The inner side of each gear (34) is slidably connected to a lifting rod (35), the inner side of the gear (34) is provided with a key, the outer side of the lifting rod (35) is provided with a key slot for the key to slide, the top of each lifting rod (35) passes through the workbench (1) and is connected to the bottom of the pressure plate (2), the bottom of each lifting rod (35) is connected to a connecting plate (36), and the end of each connecting plate (36) away from the lifting rod (35) is commonly connected to a lifting plate 3 (7), and two second driving members for driving the lifting plate (37) to reciprocate are installed at the bottom of the workbench (1).

5. The bicycle crank cutting device according to claim 4, characterized in that: The moving assembly comprises electric push rods (4) connected to the four corners of the top of the workbench (1); the top of each of the electric push rods (4) is commonly connected to a support frame (41); a transverse moving frame (42) is arranged on the top of the support frame (41); both ends of the bottom of the transverse moving frame (42) are connected to transverse guide blocks (49); both sides of the top of the support frame (41) are provided with transverse guide grooves for the transverse guide blocks (49) to slide; a transverse screw rod (43) is rotatably connected inside the transverse moving frame (42); the outer side of the transverse screw rod (43) is threadedly connected to a transverse screw block (44); and a third driving member for driving the transverse screw rod (43) to rotate is installed on one side of the transverse moving frame (42).

6. The bicycle crank cutting device according to claim 5, characterized in that: A vertical moving frame (45) is arranged at the bottom of the support frame (41), and the vertical moving frame (45) and the horizontal moving frame (42) are arranged in a cross shape. Both ends of the top of the vertical moving frame (45) are connected with vertical guide blocks (46). Both sides of the bottom of the support frame (41) are provided with vertical guide grooves for the vertical guide blocks (46) to slide. A vertical screw rod (47) is rotatably connected inside the vertical moving frame (45). A vertical thread block (48) is threadedly connected to the outer side of the vertical screw rod (47). The top of the vertical thread block (48) is connected to the bottom of the horizontal thread block (44) through a connecting shaft. A fourth driving member for driving the vertical screw rod (47) to rotate is installed on one side of the vertical moving frame (45).

7. The bicycle crank cutting device according to claim 6, characterized in that: The angle adjustment assembly comprises an adjustment plate (5) connected to the bottom of the vertical wire block (48); the inner bottom wall of the adjustment plate (5) is rotatably connected to a worm wheel (51); one side of the worm wheel (51) is meshingly connected to a worm (52); both ends of the worm (52) are rotatably connected to the inner side wall of the adjustment plate (5); and a fifth driving member for driving the worm (52) to rotate is installed on one side of the adjustment plate (5).

8. The bicycle crank cutting device according to claim 7, characterized in that: The angle adjustment assembly also includes an n-type frame (6), and the top of the n-type frame (6) passes through the bottom of the adjustment plate (5) through a transmission shaft and is connected to the bottom of the worm gear (51); a protective shell (61) is arranged on the inner side of the n-type frame (6); both sides of the protective shell (61) are rotatably connected to the inner side of the n-type frame (6); the top of the protective shell (61) is connected to a half-face gear ring (62); the inner side of the half-face gear ring (62) is connected to the two sides of the protective shell (61) through a plurality of support rods; the top of the half-face gear ring (62) is meshingly connected to a spur gear (63); both sides of the spur gear (63) are connected to the inner top of the n-type frame (6) through a mounting plate; and a sixth driving member for driving the spur gear (63) to rotate is installed on one side of one of the mounting plates.

9. The bicycle crank cutting device according to claim 8, characterized in that: The cutting assembly comprises a cutting knife (7) rotatably connected to the protective shell (61), and a seventh driving member for driving the cutting knife (7) to rotate is installed on one side of the protective shell (61).

10. A cutting method for processing a bicycle crank as claimed in any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: Place the crank on top of the workbench (1) and fix the crank by a pressure plate (2) in the fixing assembly; Step 2: starting the seventh driving member to rotate the cutting blade (7); Step 3: The worm (52) is driven to rotate by the fifth driving member, and the n-shaped frame (6) and the protective shell (61) are driven to rotate by the worm wheel (51) and the transmission shaft, so as to achieve the angle adjustment of the cutting assembly in the horizontal direction, and the spur gear (63) is driven to rotate by the sixth driving member, and the protective shell 61 and the cutting assembly are driven to rotate by the half-face gear ring (62), so as to achieve the precise angle adjustment of the cutting assembly in the inclined direction; Step 4: By controlling the electric push rod (4) to cooperate with the third drive member and the fourth drive member, the cutting assembly can be moved in the three directions of X, Y and Z, providing accurate positioning and cutting path for the cutting process of the crank.

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