A servo profiling tracking trimming mechanism and a trimming method thereof

Abstract

The present application relates to a kind of servo profile tracking edge trimming mechanism and its edge trimming method, servo profile tracking edge trimming mechanism includes edge trimming device, X-axis drive assembly and Z-axis drive assembly;Edge trimming device includes high-speed motor, axial profile wheel, radial profile wheel and edge trimming cutter;Axial profile wheel is relatively rotatably arranged on high-speed motor housing, radial profile wheel is relatively rotatably arranged on motor shaft of high-speed motor, edge trimming cutter is fixedly arranged on motor shaft, motor shaft drives edge trimming cutter to rotate, edge trimming cutter is located between axial profile wheel and radial profile wheel, axial profile wheel, radial profile wheel and edge trimming cutter are coaxial with different speed cooperation.This edge trimming mechanism will axial and radial two profile wheels be arranged on high-speed motor, and two profile wheels are coaxial with different speed cooperation with edge trimming cutter, and then effectively positioning can be carried out to the edge of the front end of plate material, so that it can be completed edge trimming processing of four edge corners of the front end of plate material by one high-speed motor.

Description

Technical Field

[0001] This invention relates to the field of sheet metal trimming technology, specifically a servo-guided contour tracking trimming mechanism and its trimming method. Background Technology

[0002] Trimming the edges of a board requires processing the corners and edges. Traditional equipment requires two trimming motors, each or four of which drive a matching trimming cutter to rotate, thereby trimming the front and back ends of the board.

[0003] Chinese Patent No. 2014208553959 discloses a two-speed automatic control contour tracking and rounding corner device for an edge banding machine. Specifically, it discloses a base, side rollers mounted on the base, a contour motor, a rounding corner cutter, upper and lower rollers, and an adjustment mechanism for adjusting the position of the contour motor. The base includes a motor mounting part for mounting the motor and a side roller motor mounting part for mounting the side rollers. The side roller motor mounting part is integrally disposed at the front end of the motor mounting part. The side rollers are fixed to the side roller motor mounting part. The contour motor is slidably mounted on the motor mounting part, and a sliding mechanism is provided on the motor mounting part and the contour motor. The rounding corner cutter is mounted on the shaft end of the contour motor and located outside the side rollers. The side guide roller is a component that positions the side of the board, enabling the corner rounding cutter to precisely process the board. However, the side guide roller in this patent is fixed and cannot perform 360° positioning. This means that the corner rounding equipment can only perform corner rounding on the front or rear of the board, so two sets of corner rounding equipment are needed to complete the corner rounding on the front and rear of the board. In addition, since the side guide roller is fixed, it will drag on the side of the board during processing, causing scratches on the side of the board, which directly affects the production quality of the board.

[0004] Therefore, it is necessary to further improve the existing sheet metal trimming equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a servo contouring and tracking trimming mechanism and its trimming method. The servo contouring and tracking trimming mechanism sets two axial and two radial contouring wheels on a high-speed motor. The two contouring wheels are coaxial with the trimming tool but at different speeds, thereby effectively positioning the front and rear corners of the board and enabling the trimming of the four corners of the front and rear ends of the board to be completed by a single high-speed motor.

[0006] The objective of this invention is achieved as follows: A servo contouring and tracking trimming mechanism includes a trimming device for trimming the edges of a sheet metal, an X-axis drive assembly for driving the trimming device to move along the X-axis, and a Z-axis drive assembly for driving the trimming device to move along the Z-axis. The trimming device, the X-axis drive assembly, and the Z-axis drive assembly are respectively mounted on a machine body. The trimming device includes a high-speed motor, an axial contouring wheel, a radial contouring wheel, and a trimming cutter. The axial contouring wheel acts axially on the sheet metal, the radial contouring wheel acts radially on the sheet metal, and the trimming cutter performs trimming processing on the sheet metal. The axial contouring wheel is rotatably mounted on the housing of the high-speed motor, and the radial contouring wheel is rotatably mounted on the motor spindle of the high-speed motor. The trimming cutter is fixedly mounted on the motor spindle, and the motor spindle drives the trimming cutter to rotate. The trimming cutter is located between the axial contouring wheel and the radial contouring wheel, and the axial contouring wheel, the radial contouring wheel, and the trimming cutter are coaxial with each other but operate at different speeds.

[0007] An axial contour wheel adjusting nut is provided between the high-speed motor housing and the axial contour wheel. The axial contour wheel is assembled with the axial contour wheel adjusting nut through an axial contour bearing. The axial contour wheel adjusting nut is provided with an axial adjustment internal thread that is assembled with the high-speed motor housing. The axial contour wheel adjusting nut drives the axial contour wheel to move axially on the high-speed motor housing to adjust the relative position between the axial contour wheel and the trimming tool.

[0008] The trimming tool is fixed to the motor spindle by a tool locking nut. The axial contour wheel is provided with a clearance groove. The trimming tool is rotatably set inside the clearance groove, and the cutting edge of the trimming tool is exposed outside the clearance groove. The radial contour wheel is assembled to the motor spindle by a radial contour bearing.

[0009] The radial copying wheel has a weight-reducing part and a solid part. The weight-reducing part consists of several hollowed-out parts concentrated on the same side of the radial copying wheel. The center of the radial copying wheel is located between the weight-reducing part and the solid part. The solid part is held below the weight-reducing part under the action of gravity, so that the radial copying wheel does not rotate with the motor spindle when the high-speed motor spindle is running.

[0010] This servo contouring and tracking trimming mechanism also includes an X-axis slide, a Z-axis slide, and a Y-axis drive assembly for driving the trimming device to move along the Y-axis direction. The X-axis drive assembly is located between the X-axis slide and the machine body, the Z-axis drive assembly is located between the X-axis slide and the Z-axis slide, two or more trimming devices are located on the Z-axis slide, and two or more Y-axis drive assemblies are located between the Z-axis slide and the corresponding trimming device. The trimming device and the Y-axis drive assembly correspond one-to-one. The Y-axis drive assembly drives the corresponding trimming device to move to the processing position or the non-processing position. The trimming device that moves to the processing position performs trimming processing on the board.

[0011] An X-axis elastic buffer assembly and a Z-axis elastic buffer assembly are provided between the Z-axis slide and the X-axis slide. The X-axis elastic buffer assembly provides elastic buffering for the X-axis movement of the trimming device, and the Z-axis elastic buffer assembly provides elastic buffering for the Z-axis movement of the trimming device.

[0012] This servo contouring and trimming mechanism also includes a Z-axis floating bracket, on which the trimming device is mounted; a Z-axis elastic buffer assembly is disposed between the Z-axis slide and the Z-axis floating bracket, and the Z-axis elastic buffer assembly includes a first Z-axis contouring spring and a second Z-axis contouring spring respectively disposed between the Z-axis slide and the Z-axis floating bracket; when the trimming device is subjected to a force in the Z-axis direction, the first Z-axis contouring spring or the second Z-axis contouring spring is compressed to generate a Z-axis buffering force.

[0013] This servo contouring and tracking trimming mechanism also includes an X-axis floating bracket, on which the trimming device is mounted, and a Y-axis drive assembly is positioned between the trimming device and the X-axis floating bracket. An X-axis elastic buffer assembly is positioned between the Z-axis floating bracket and the X-axis floating bracket. The X-axis elastic buffer assembly includes a first X-axis contouring spring and a second X-axis contouring spring, respectively positioned between the Z-axis and X-axis floating brackets. When the trimming device is subjected to a force in the X-axis direction, the first or second X-axis contouring spring is compressed, generating an X-axis buffering force.

[0014] The trimming method of the above-mentioned servo contour tracking trimming mechanism includes the following steps: Step 1: The sheet material is conveyed along the positive X-axis on the conveyor line. At this time, the center of the trimming device is located in the initial position. The control system detects the moving speed V1 of the sheet material through the encoder on the conveyor line. The control system obtains the moving speed V1 of the sheet material and calculates the conveying position of the sheet material. When the front side of the sheet material exceeds the center of the trimming device by a distance d1, the X-axis drive assembly drives the trimming device to move along the positive X-axis at a moving speed V1, and the Z-axis drive assembly drives the trimming device to move downward along the Z-axis until the radial contour wheel contacts the top front end of the sheet material. At this time, the center of the trimming device is located in the first trimming position, and the trimming cutter trims the top front end of the sheet material. Step 2: The X-axis drive assembly drives the trimming device to move along the positive X-axis at a speed of V2, where V2 > V1; when the center of the trimming device exceeds the front side of the board by a distance of d2, the center of the trimming device is located at the second trimming position. The X-axis drive assembly drives the trimming device to move along the positive X-axis at a speed of V1, and the Z-axis drive assembly drives the trimming device to move downward along the Z-axis. The radial contour wheel contacts the front side of the board, and the trimming tool trims the front side of the board. Step 3: When the center of the trimming device extends downwards by a distance d3 beyond the bottom of the board, the center of the trimming device is located at the third trimming position. The X-axis drive assembly drives the trimming device to move in the opposite direction of the X-axis at a speed of V3. The radial contour wheel contacts the front end of the bottom of the board, and the trimming tool trims the front end of the bottom of the board. Step 4: When the distance d4 between the front side of the board and the center of the trimming device is d4, the center of the trimming device is located at the fourth trimming position. At this time, the trimming of the front end of board 1 is completed. Step 5: The sheet continues to be conveyed along the positive X-axis; when the center of the trimming device exceeds the rear side of the sheet by a distance of d5, the center of the trimming device is located at the fifth trimming position. The X-axis drive assembly drives the trimming device to move along the opposite X-axis at a speed of V4. The radial contour wheel contacts the bottom rear end of the sheet, and the trimming cutter trims the bottom rear end of the sheet. Step 6: When the distance between the rear side of the board and the center of the trimming device is d6, the center of the trimming device is located at the sixth trimming position. The X-axis drive assembly drives the trimming device to move along the positive X-axis at a speed of V1. The Z-axis drive assembly drives the trimming device to move upward along the Z-axis. The radial contour wheel contacts the rear side of the board, and the trimming tool trims the rear side of the board. Step 7: When the distance between the center of the trimming device and the rear end of the top of the board is d7, the center of the trimming device is located at the seventh trimming position. The X-axis drive assembly drives the trimming device to move along the positive X-axis at a moving speed V5, where V5 > V1. The radial contour wheel contacts the rear end of the top of the board, and the trimming tool trims the rear end of the top of the board. Step 8: When the center of the trimming device exceeds the rear side of the board by a distance of d8, the center of the trimming device is located at the eighth trimming position. The Z-axis drive assembly drives the trimming device to move upward along the Z-axis to the finished position. The radial contour wheel and the trimming cutter leave the top rear end of the board, thus completing the trimming of the front and rear ends of a board. The above steps are then repeated to trim the next board.

[0015] The length of the sheet material is L; When L>d4+d5, the Z-axis drive assembly drives the trimming device to move downward along the Z-axis from the fourth trimming position to the first clearance position. Then, the X-axis drive assembly drives the trimming device to move in the opposite direction along the X-axis from the first clearance position to the second clearance position. After that, the Z-axis drive assembly drives the trimming device to move upward along the Z-axis from the second clearance position to the fifth trimming position. When L≤d4+d5, the X-axis drive assembly drives the trimming device to move from the third trimming position to the sixth trimming position.

[0016] The beneficial effects of this invention are as follows: This servo-driven contouring and tracking trimming mechanism mounts axial and radial contouring wheels on high-speed motors. These wheels are coaxial with the trimming cutter but operate at different speeds, enabling effective positioning of the front and rear corners of the sheet metal. Both the axial and radial contouring wheels are rotatable, allowing for 360° omnidirectional positioning. This allows a single high-speed motor to complete the trimming of all four corners of the sheet metal. This servo-driven contouring and tracking trimming mechanism offers high trimming efficiency, good processing quality, relatively small footprint, and low manufacturing cost.

[0017] The X-axis slide and the trimming device are equipped with Z-axis and X-axis elastic buffer components, which can provide elastic buffering for the trimming device when it is subjected to external forces in the X-axis and Z-axis directions. At the same time, it can make the axial contour wheel axially close to the side of the plate and the radial contour wheel radially close to the top, end face and bottom of the plate. The trimming tool is effectively positioned relative to the plate and can avoid the plate from shifting relative to the trimming tool during trimming, thus improving the processing accuracy.

[0018] The X-axis slide is equipped with two or more trimming devices. Each trimming device is driven to the processing position and non-processing position by the corresponding Y-axis drive component. This allows for switching between appropriate trimming devices to trim the sheet metal, reducing the need to change trimming tools, reducing equipment downtime, improving equipment processing efficiency, and reducing the labor intensity of workers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the working state of a servo contouring and tracking trimming mechanism according to an embodiment of the present invention.

[0020] Figure 2 This is an exploded view of a trimming device according to an embodiment of the present invention.

[0021] Figure 3 and Figure 4 These are three-dimensional schematic diagrams of a servo contouring and tracking trimming mechanism according to an embodiment of the present invention, taken from different angles.

[0022] Figure 5 This is a side view of a servo contour tracking trimming mechanism according to an embodiment of the present invention.

[0023] Figure 6 This is an assembly diagram of a trimming device according to an embodiment of the present invention.

[0024] Figure 7 This is a partial perspective sectional view of a trimming device according to an embodiment of the present invention.

[0025] Figure 8 This is a three-dimensional sectional view of a servo contour tracking trimming mechanism according to an embodiment of the present invention.

[0026] Figure 9This is a perspective sectional view of an axial contour wheel adjusting nut according to an embodiment of the present invention.

[0027] Figure 10 This is a partial cross-sectional schematic diagram of a trimming device according to an embodiment of the present invention.

[0028] Figures 11-20 The following are schematic diagrams of partial trajectories of the trimming device according to an embodiment of the present invention.

[0029] Figure 21 This is a schematic diagram of the overall trajectory of the trimming process of the trimming device according to an embodiment of the present invention.

[0030] Figure 22 This is a schematic diagram of the overall trajectory of the trimming process of the trimming device according to another embodiment of the present invention. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] See Figures 1-10 The servo contouring and tracking trimming mechanism involved in this embodiment includes a trimming device 2 for trimming the edges and corners of the sheet material 1, an X-axis drive assembly for driving the trimming device 2 to move along the X-axis direction, and a Z-axis drive assembly for driving the trimming device 2 to move along the Z-axis direction. The trimming device 2, the X-axis drive assembly, and the Z-axis drive assembly are respectively mounted on the machine body 10. The trimming device 2 includes a high-speed motor 3, an axial contouring wheel 4, a radial contouring wheel 5, and a trimming cutter 20. The axial contouring wheel 4 acts axially on the sheet material 1, and the radial contouring wheel 5 acts radially on the sheet material. On the first stage, the trimming tool 20 trims the sheet 1. The axial contour wheel 4 is rotatably mounted on the housing of the high-speed motor 3 via the axial contour bearing 7, and the radial contour wheel 5 is rotatably mounted on the motor spindle 6 of the high-speed motor 3 via the radial contour bearing 8. The trimming tool 20 is fixedly mounted on the motor spindle 6, which drives the trimming tool 20 to rotate. The trimming tool 20 is located between the axial contour wheel 4 and the radial contour wheel 5. The axial contour wheel 4, the radial contour wheel 5, and the trimming tool 20 are coaxial but operate at different speeds. When the trimming device 2 trims the sheet 1, the motor spindle 6 rotates at high speed. The axial contour wheel 4 and the radial contour wheel 5 do not rotate synchronously; they roll on the sheet 1 for positioning, and rotate around their respective bearings.

[0033] This servo-driven contouring and tracking trimming mechanism mounts the axial contouring wheel 4 and the radial contouring wheel 5 on a high-speed motor 3. The two contouring wheels are coaxial with the trimming cutter 20 but operate at different speeds, thus effectively positioning the front and rear corners of the sheet material 1. The axial contouring wheel 4 and the radial contouring wheel 5 are rotatable, enabling 360° omnidirectional positioning. This allows a single high-speed motor 3 to complete the trimming of all four corners of the sheet material 1. This servo-driven contouring and tracking trimming mechanism offers high trimming efficiency, good processing quality, relatively small footprint, and low manufacturing cost.

[0034] An axial contour wheel adjusting nut 21 is provided between the high-speed motor 3 housing and the axial contour wheel 4. The axial contour wheel 4 is mounted on the high-speed motor 6 via the axial contour wheel adjusting nut 21. The axial contour wheel 4 is assembled with the axial contour wheel adjusting nut 21 via the axial contour bearing 7. The axial contour wheel adjusting nut 21 has an axial adjustment internal thread 22 that is assembled with the high-speed motor 3 housing (the front end cover of the high-speed motor 3 housing has an external thread, and the axial contour wheel adjusting nut 21 is threadedly connected to the front end cover). The axial contour wheel adjusting nut 21 drives the axial contour wheel 4 to rotate on the high-speed motor 3 housing. The axial profile wheel 4 and the trimming tool 20 are adjusted by moving the axial profile wheel 4 in the direction of rotation. When the axial profile wheel adjusting nut 21 is locked, the axial profile wheel 4 can rotate relative to the high-speed motor 3, but cannot move axially relative to the high-speed motor 3. When the axial profile wheel adjusting nut 21 is unlocked, the axial profile wheel adjusting nut 21 can move axially relative to the high-speed motor 3, and the axial profile wheel 4 moves axially with the axial profile wheel adjusting nut 21 to adjust the axial position of the axial profile wheel 4 relative to the high-speed motor 3, thereby adjusting the axial distance between the trimming tool 20 and the axial profile wheel 4.

[0035] See Figure 9 The axial contour wheel adjusting nut 21 is provided with a radially extending locking slot 50 and a fastener (not shown in the figure) for locking or loosening the locking slot 50. The locking slot 50 has an open state and a closed state. When the fastener locks the locking slot 50, the locking slot 50 is in the closed state, and the axial contour wheel adjusting nut 21 is fixed relative to the high-speed motor 3. When the fastener loosens the locking slot 50, the locking slot 50 is in the open state, and the axial contour wheel adjusting nut 21 can be axially adjusted relative to the high-speed motor 3. The axial contour wheel adjusting nut 21 is provided with a fixing screw hole 51 located on one side of the locking slot 50. The fastener is a bolt, which is screwed into the fixing screw hole 51 from the other side of the locking slot 50 to lock the locking slot 50.

[0036] The trimming tool 20 is fixed to the motor spindle 6 by the tool locking nut 25. The axial contour wheel 4 is provided with a relief groove 26. The trimming tool 20 is rotatably disposed inside the relief groove 26, and the cutting edge 27 of the trimming tool 20 is exposed outside the relief groove 26. The radial contour wheel 5 is assembled to the motor spindle 6 by the radial contour bearing 8. The cutting edge 27 of the trimming tool 20 is exposed in the annular gap between the axial contour wheel 4 and the radial contour wheel 5.

[0037] The radial contour wheel 5 has a weight-reducing section 23 and a solid section 24. The weight-reducing section 23 consists of several hollowed-out sections concentrated on the same side of the radial contour wheel 5. The center of the radial contour wheel 5 is located between the weight-reducing section 23 and the solid section 24. Under the action of gravity, the solid section 24 remains below the weight-reducing section 23, so that when the motor spindle 6 of the high-speed motor 3 rotates, the radial contour wheel 5 does not rotate with the motor spindle 6. With the center of the radial contour wheel 5 as the boundary, the weight-reducing section 23 and the solid section 24 are set on different sides, thus making the weight of the radial contour wheel 5 uneven. When the motor spindle 6 rotates, the radial contour wheel 5 can remain stationary.

[0038] This servo contouring and tracking trimming mechanism also includes an X-axis slide 9, a Z-axis slide 34, and a Y-axis drive assembly for driving the trimming device 2 to move along the Y-axis direction. The X-axis drive assembly is located between the X-axis slide 9 and the body 10, and the Z-axis drive assembly is located between the X-axis slide 9 and the Z-axis slide 34. Two (or more) sets of trimming devices 2 are located on the Z-axis slide 34, and two or more sets of Y-axis drive assemblies are located between the Z-axis slide 34 and the corresponding trimming device 2. The trimming device 2 and the Y-axis drive assembly correspond one-to-one. The Y-axis drive assembly drives the corresponding trimming device 2 to move to the processing position or the non-processing position. The trimming device 2 that moves to the processing position performs trimming processing on the sheet 1. The X-axis slide 9 is equipped with two or more trimming devices 2. Each trimming device 2 is driven to the processing position and non-processing position by the corresponding Y-axis drive component. This allows for switching between appropriate trimming devices 2 to trim the sheet 1, reducing the need to change trimming tools, reducing equipment downtime, improving equipment processing efficiency, and reducing the labor intensity of workers.

[0039] An X-axis elastic buffer assembly and a Z-axis elastic buffer assembly are provided between the Z-axis slide 34 and the X-axis slide 9. The X-axis elastic buffer assembly provides elastic buffering for the X-axis movement of the trimming device 2, and the Z-axis elastic buffer assembly provides elastic buffering for the Z-axis movement of the trimming device 2.

[0040] This servo contour tracking trimming mechanism also includes a Z-axis floating bracket 36, on which the trimming device 2 is mounted; a Z-axis elastic buffer assembly is disposed between the Z-axis slide 34 and the Z-axis floating bracket 36, and the Z-axis elastic buffer assembly includes a first Z-axis contour spring 16 and a second Z-axis contour spring 17 respectively disposed between the Z-axis slide 34 and the Z-axis floating bracket 36; when the trimming device 2 is subjected to a force in the Z-axis direction, the first Z-axis contour spring 16 or the second Z-axis contour spring 17 is compressed to generate a Z-axis buffer force.

[0041] This servo contouring and trimming mechanism also includes an X-axis floating bracket 40, on which the trimming device 2 is mounted, and a Y-axis drive assembly is mounted between the trimming device 2 and the X-axis floating bracket 40. An X-axis elastic buffer assembly is mounted between the Z-axis floating bracket 36 and the X-axis floating bracket 40. The X-axis elastic buffer assembly includes a first X-axis contouring spring 13 and a second X-axis contouring spring 52 respectively mounted between the Z-axis floating bracket 36 and the X-axis floating bracket 40. When the trimming device 2 is subjected to an X-axis force, the first X-axis contouring spring 13 or the second X-axis contouring spring 52 is compressed to generate an X-axis buffering force. An X-axis contouring guide rail assembly is provided between the Z-axis floating bracket 36 and the X-axis floating bracket 40. The X-axis contouring guide rail assembly includes an X-axis contouring slider 41 mounted on the Z-axis floating bracket 36 and an X-axis contouring slide rail 42 mounted on the X-axis floating bracket 40. The X-axis contouring slider 41 and the X-axis contouring slide rail 42 are slidably engaged. A Y-axis guide rail assembly is provided between the trimming device 2 and the X-axis floating support 40. The Y-axis guide rail assembly includes a Y-axis slider 43 and a Y-axis slide rail 18. The Y-axis slider 43 is mounted on the X-axis floating support 40, and the Y-axis slide rail 18 is mounted on the trimming device 2. The Y-axis slide rail 18 and the Y-axis slider 43 are in sliding engagement. The Y-axis drive assembly includes a Y-axis switching cylinder 19. The cylinder body of the Y-axis switching cylinder 19 is fixed on the X-axis floating support 40. The piston rod of the Y-axis switching cylinder 19 is rotatably connected to the trimming device 2. The Y-axis switching cylinder 19 drives the trimming device 2 to move to the processing position and the non-processing position.

[0042] The servo contouring and trimming mechanism includes a fixed base plate 45, which is mounted on the machine body 10. The X-axis drive assembly includes an X-axis servo motor 11, an X-axis rack 48, and an X-axis gear 49. The output end of the X-axis servo motor 11 is connected to the X-axis gear 49. The X-axis servo motor 11 is fixed to the X-axis slide 9, and the X-axis rack 48 is fixed to the fixed base plate 45. The X-axis rack 48 and the X-axis gear 49 mesh with each other. An X-axis guide rail assembly is provided between the X-axis slide 9 and the fixed base plate 45. The X-axis guide rail assembly includes an X-axis slider 30 and an X-axis slide rail 29 that slides with the X-axis slider 30. The X-axis slide rail 29 is fixed on the fixed base plate 45, and the X-axis slider 30 is fixed on the X-axis slide block 9. When the X-axis servo motor 11 drives the trimming device 2 to contact the plate 1, the force on the trimming device 2 compresses the first X-axis contour spring 13 or the second X-axis contour spring 52. The first X-axis contour spring 13 or the second X-axis contour spring 52 produces an elastic buffering effect on the trimming device 2, so that the radial contour wheel 5 is in close contact with the plate 1.

[0043] The Z-axis drive assembly includes a Z-axis servo motor 14, a Z-axis ball screw 33, and a Z-axis ball nut 35. The Z-axis servo motor 14 is fixed on the X-axis slide 9. The motor shaft of the Z-axis servo motor 14 is connected to the Z-axis ball screw 33. The Z-axis ball nut 35 is fixed on the Z-axis slide 34. The Z-axis ball screw 33 and the Z-axis ball nut 35 are threadedly connected to each other. When the Z-axis servo motor 14 drives the Z-axis ball screw 33 to rotate, the Z-axis ball nut 35 drives the trimming device 2 on the Z-axis slide 34 to move along the Z-axis direction.

[0044] A Z-axis guide rail assembly is provided between the X-axis slide block 9 and the Z-axis floating bracket 36. The Z-axis guide rail assembly includes a Z-axis slide rail 38 and a Z-axis slider 39. The Z-axis slide rail 38 is fixed on the X-axis slide block 9, and the Z-axis slider 39 is fixed on the Z-axis floating bracket 36. The Z-axis slider 39 and the Z-axis slide rail 38 slide in a sliding fit. When the Z-axis servo motor 14 drives the trimming device 2 to move up and down along the Z-axis and come into contact with the plate 1, the force on the trimming device 2 compresses the first Z-axis contouring spring 16 or the second Z-axis contouring spring 17. The first Z-axis contouring spring 16 or the second Z-axis contouring spring 17 produces an elastic buffering effect on the trimming device 2, so that the radial contouring wheel 5 is in close contact with the plate 1.

[0045] The trimming method of the above-mentioned servo contour tracking trimming mechanism includes the following steps: Step 1: The sheet material 1 is conveyed along the positive X-axis direction on the conveyor line 28. At this time, the center of the trimming device 2 is located at the initial position O1. The control system detects the moving speed V1 of the sheet material 1 through the encoder on the conveyor line 28. The control system obtains the moving speed V1 of the sheet material 1 and calculates the conveying position of the sheet material 1. When the front side of the sheet material 1 exceeds the center of the trimming device 2 by a distance d1, the X-axis drive assembly drives the trimming device 2 to move along the positive X-axis direction at a moving speed V1, and the Z-axis drive assembly drives the trimming device 2 to move downward along the Z-axis until the radial contour wheel 5 contacts the top front end of the sheet material 1. At this time, the center of the trimming device 2 is located at the first trimming position O2, and the trimming cutter 20 trims the top front end of the sheet material 1. Step 2: The X-axis drive assembly drives the trimming device 2 to move along the positive X-axis at a speed of V2, where V2 > V1; when the center of the trimming device 2 exceeds the front side of the board 1 by a distance of d2, the center of the trimming device 2 is located at the second trimming position O3. The X-axis drive assembly drives the trimming device 2 to move along the positive X-axis at a speed of V1, and the Z-axis drive assembly drives the trimming device 2 to move downward along the Z-axis. The radial contour wheel 5 contacts the front side of the board 1, and the trimming cutter 20 trims the front side of the board 1. Step 3: When the center of the trimming device 2 extends downward beyond the bottom of the board 1 by a distance of d3, the center of the trimming device 2 is located at the third trimming position O4. The X-axis drive assembly drives the trimming device 2 to move in the opposite direction of the X-axis at a moving speed V3. The radial contour wheel 5 contacts the bottom front end of the board 1, and the trimming cutter 20 trims the bottom front end of the board 1. Step 4: When the distance d4 between the front side of the board 1 and the center of the trimming device 2 is d4, the center of the trimming device 2 is located at the fourth trimming position O5. At this time, the trimming process of the front end of the board 1 is completed. Step 5: The sheet material 1 continues to be conveyed along the positive X-axis; when the center of the trimming device 2 exceeds the rear side of the sheet material 1 by a distance of d5, the center of the trimming device 2 is located at the fifth trimming position O6. The X-axis drive assembly drives the trimming device 2 to move along the opposite X-axis at a moving speed V4. The radial contour wheel 5 contacts the bottom rear end of the sheet material 1, and the trimming cutter 20 trims the bottom rear end of the sheet material 1. Step 6: When the distance d6 between the rear side of the board 1 and the center of the trimming device 2 is d6, the center of the trimming device 2 is located at the sixth trimming position O7. The X-axis drive assembly drives the trimming device 2 to move along the positive X-axis at a moving speed V1. The Z-axis drive assembly drives the trimming device 2 to move upward along the Z-axis. The radial contour wheel 5 contacts the rear side of the board 1, and the trimming cutter 20 trims the rear side of the board 1. Step 7: When the distance between the center of the trimming device 2 and the top rear end of the board 1 is d7, the center of the trimming device 2 is located at the seventh trimming position O8. The X-axis drive assembly drives the trimming device 2 to move along the positive X-axis at a moving speed V5, where V5 > V1. The radial contour wheel 5 contacts the top rear end of the board 1, and the trimming cutter 20 trims the top rear end of the board 1. Step 8: When the center of the trimming device 2 is d8 away from the rear side of the board 1, the center of the trimming device 2 is located at the eighth trimming position O9. The Z-axis drive assembly drives the trimming device 2 to move upward along the Z-axis to the finished position O10. The radial contour wheel 5 and the trimming cutter 20 leave the top rear end of the board 1, thus completing the trimming of the front and rear ends of a board 1. The above steps are then repeated to trim the next board 1.

[0046] The length of board 1 is L; When L>d4+d5, the Z-axis drive assembly drives the trimming device 2 to move downward along the Z-axis from the fourth trimming position O5 to the first clearance position Oa. Then, the X-axis drive assembly drives the trimming device 2 to move in the opposite direction along the X-axis from the first clearance position Oa to the second clearance position Ob. After that, the Z-axis drive assembly drives the trimming device 2 to move upward along the Z-axis from the second clearance position Ob to the fifth trimming position O6. When L≤d4+d5, the X-axis drive assembly drives the trimming device 2 to move from the third trimming position O4 to the sixth trimming position O7.

[0047] The trimming method of the above-mentioned servo contour tracking trimming mechanism includes the following steps: Step 1: See Figure 11 The sheet material 1 is conveyed along the positive X-axis on the conveyor line 28, at which point the center of the trimming device 2 is located at the initial position O1. The control system detects the moving speed V1 of the sheet material 1 through the encoder on the conveyor line 28, obtains the moving speed V1 of the sheet material 1, and calculates the conveying position of the sheet material 1. See also Figure 12 When the distance d1 between the front side of the sheet 1 and the center of the trimming device 2 is greater than the front side of the sheet 1, the X-axis drive assembly drives the trimming device 2 to move along the positive X-axis at a speed V1, ensuring that the trimming device 2 tracks the sheet 1 along the positive X-axis. The Z-axis drive assembly drives the trimming device 2 to move downward along the Z-axis until the radial contour wheel 5 contacts the top front end of the sheet 1. The second Z-axis contour spring 17 is compressed, thereby causing the radial contour wheel 5 to press tightly against the top front end of the sheet 1. At this time, the center of the trimming device 2 is located at the first trimming position O2, and the trimming cutter 20 trims the top front end of the sheet 1. Step Two: See Figure 13The X-axis drive assembly drives the trimming device 2 to move along the positive X-axis at a speed of V2, where V2 > V1, ensuring that the trimming device 2 can smoothly trim the top front end of the board 1. When the center of the trimming device 2 exceeds the front side of the board 1 by a distance of d2 (d2 is less than or equal to the radius R of the radial contour wheel 5), the center of the trimming device 2 is located at the second trimming position O3. The X-axis drive assembly drives the trimming device 2 to move along the positive X-axis at a speed of V1, ensuring that the trimming device 2 tracks the board 1. The Z-axis drive assembly drives the trimming device 2 to move downward along the Z-axis. The radial contour wheel 5 contacts the front side of the board 1, and the second X-axis contour spring 52 is compressed, thereby reacting the radial contour wheel 5 to press tightly against the front side of the board 1. The trimming cutter 20 trims the front side of the board 1. Step 3: See Figure 14 When the center of the trimming device 2 extends downward beyond the bottom of the board 1 by a distance d3 (d3≤R), the center of the trimming device 2 is located at the third trimming position O4. The X-axis drive assembly drives the trimming device 2 to move in the opposite direction of the X-axis at a moving speed V3. The radial contour wheel 5 contacts the bottom front end of the board 1, and the second Z-axis contour spring 16 is compressed by force, thereby reacting the radial contour wheel 5 to press tightly against the bottom front end of the board 1. The trimming cutter 20 trims the bottom front end of the board 1. Step 4: See Figure 15 When the distance between the front side of the board 1 and the center of the trimming device 2 is d4, the center of the trimming device 2 is located at the fourth trimming position O5, and the trimming process of the front end of the board 1 is completed. Step 5: See Figure 16 The sheet material 1 continues to be conveyed along the positive X-axis; when the center of the trimming device 2 exceeds the rear side of the sheet material 1 by a distance of d5, the center of the trimming device 2 is located at the fifth trimming position O6. The X-axis drive assembly drives the trimming device 2 to move along the opposite X-axis at a moving speed V4. The radial contour wheel 5 contacts the bottom rear end of the sheet material 1, and the second Z-axis contour spring 16 is compressed by force, thereby reacting the radial contour wheel 5 to press against the bottom rear end of the sheet material 1. The trimming cutter 20 trims the bottom rear end of the sheet material 1. Step Six: See Figure 17 When the distance between the rear side of the board 1 and the center of the trimming device 2 is d6 (d6≤R), the center of the trimming device 2 is located at the sixth trimming position O7. The X-axis drive assembly drives the trimming device 2 to move along the positive X-axis at a moving speed V1 to ensure that the trimming device 2 tracks the board 1. The Z-axis drive assembly drives the trimming device 2 to move upward along the Z-axis. The radial contour wheel 5 contacts the rear side of the board 1, and the first X-axis contour spring 13 is compressed by force, thereby reacting the radial contour wheel 5 to press against the rear side of the board 1. The trimming cutter 20 trims the rear side of the board 1. Step Seven: See Figure 18When the distance between the center of the trimming device 2 and the top rear end of the board 1 is d7 (d7≤R), the center of the trimming device 2 is located at the seventh trimming position O8. The X-axis drive assembly drives the trimming device 2 to move along the positive X-axis at a moving speed V5, where V5>V1. The radial contour wheel 5 contacts the top rear end of the board 1, and the second Z-axis contour spring 17 is compressed by force, thereby reacting the radial contour wheel 5 to press against the top rear end of the board 1. The trimming cutter 20 performs trimming processing on the top rear end of the board 1. Step 8: See Figure 19 When the center of the trimming device 2 exceeds the rear side of the board 1 by a distance of d8, the center of the trimming device 2 is located at the eighth trimming position O9. (See below) Figure 20 The Z-axis drive assembly drives the trimming device 2 to move upward along the Z-axis to the finished position O10. The radial contour wheel 5 and the trimming cutter 20 leave the top rear end of the board 1, thus completing the trimming of the front and rear ends of a board 1. The above steps are then repeated to trim the next board 1.

[0048] The length of board 1 is L; See Figure 21 When L>d4+d5, the Z-axis drive assembly drives the trimming device 2 to move downward along the Z-axis from the fourth trimming position O5 to the first clearance position Oa. Then, the X-axis drive assembly drives the trimming device 2 to move in the opposite direction along the X-axis from the first clearance position Oa to the second clearance position Ob. After that, the Z-axis drive assembly drives the trimming device 2 to move upward along the Z-axis from the second clearance position Ob to the fifth trimming position O6. When L≤d4+d5, the X-axis drive assembly drives the trimming device 2 to move from the third trimming position O4 to the sixth trimming position O7.

[0049] After the trimming of the front and rear ends of a piece of board 1 is completed, the X-axis drive assembly drives the trimming device 2 to return from the completed position O10 to the initial position O1.

[0050] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A servo-guided contouring and trimming mechanism, characterized in that: The device includes a trimming device (2) for trimming the edges of the sheet (1), an X-axis drive assembly for driving the trimming device (2) to move along the X-axis, and a Z-axis drive assembly for driving the trimming device (2) to move along the Z-axis. The trimming device (2), the X-axis drive assembly, and the Z-axis drive assembly are respectively mounted on the machine body (10). The trimming device (2) includes a high-speed motor (3), an axial contour wheel (4), a radial contour wheel (5), and a trimming cutter (20). The axial contour wheel (4) acts axially on the sheet (1), and the radial contour wheel (5) acts radially on the sheet (1). The trimming tool (20) trims the sheet metal (1); the axial contour wheel (4) is rotatably mounted on the housing of the high-speed motor (3), the radial contour wheel (5) is rotatably mounted on the motor spindle (6) of the high-speed motor (3), the trimming tool (20) is fixedly mounted on the motor spindle (6), the motor spindle (6) drives the trimming tool (20) to rotate, the trimming tool (20) is located between the axial contour wheel (4) and the radial contour wheel (5), the axial contour wheel (4), the radial contour wheel (5) and the trimming tool (20) are coaxial but at different speeds. An axial contour wheel adjusting nut (21) is provided between the housing of the high-speed motor (3) and the axial contour wheel (4). The axial contour wheel (4) is assembled with the axial contour wheel adjusting nut (21) through the axial contour bearing (7). The axial contour wheel adjusting nut (21) is provided with an axial adjustment internal thread (22) that is assembled with the housing of the high-speed motor (3). The axial contour wheel adjusting nut (21) drives the axial contour wheel (4) to move axially on the housing of the high-speed motor (3) to adjust the relative position between the axial contour wheel (4) and the trimming tool (20). The trimming tool (20) is fixed on the motor spindle (6) by the tool locking nut (25). The axial contour wheel (4) is provided with a relief groove (26). The trimming tool (20) is rotatably disposed inside the relief groove (26). The cutting edge (27) on the trimming tool (20) is exposed outside the relief groove (26). The radial contour wheel (5) is assembled on the motor spindle (6) through the radial contour bearing (8). It also includes a Z-axis floating bracket (36), and the trimming device (2) is disposed on the Z-axis floating bracket (36); the Z-axis elastic buffer assembly is disposed between the Z-axis slide (34) and the Z-axis floating bracket (36), and the Z-axis elastic buffer assembly includes a first Z-axis contour spring (16) and a second Z-axis contour spring (17) respectively disposed between the Z-axis slide (34) and the Z-axis floating bracket (36); when the trimming device (2) is subjected to a force in the Z-axis direction, the first Z-axis contour spring (16) or the second Z-axis contour spring (17) is compressed to generate a Z-axis buffer force; It also includes an X-axis floating bracket (40), a trimming device (2) is disposed on the X-axis floating bracket (40), and a Y-axis drive assembly is disposed between the trimming device (2) and the X-axis floating bracket (40); an X-axis elastic buffer assembly is disposed between the Z-axis floating bracket (36) and the X-axis floating bracket (40), and the X-axis elastic buffer assembly includes a first X-axis contour spring (13) and a second X-axis contour spring (52) disposed between the Z-axis floating bracket (36) and the X-axis floating bracket (40); when the trimming device (2) is subjected to an X-axis force, the first X-axis contour spring (13) or the second X-axis contour spring (52) is compressed to generate an X-axis buffer force.

2. The servo-guided contouring and trimming mechanism according to claim 1, characterized in that: The radial contour wheel (5) is provided with a weight reduction part (23) and a solid part (24). The weight reduction part (23) consists of several hollowed-out parts concentrated on the same side of the radial contour wheel (5). The center of the radial contour wheel (5) is located between the weight reduction part (23) and the solid part (24). The solid part (24) is held below the weight reduction part (23) under the action of gravity, so that when the motor spindle (6) of the high-speed motor (3) is running, the radial contour wheel (5) does not rotate with the motor spindle (6).

3. The servo-guided contouring and trimming mechanism according to claim 1, characterized in that: It also includes an X-axis slide (9), a Z-axis slide (34), and a Y-axis drive assembly for driving the trimming device (2) to move along the Y-axis direction. The X-axis drive assembly is located between the X-axis slide (9) and the machine body (10), and the Z-axis drive assembly is located between the X-axis slide (9) and the Z-axis slide (34). Two or more trimming devices (2) are located on the Z-axis slide (34), and two or more Y-axis drive assemblies are located between the Z-axis slide (34) and the corresponding trimming device (2). The trimming device (2) and the Y-axis drive assembly correspond one-to-one. The Y-axis drive assembly drives the corresponding trimming device (2) to move to the processing position or the non-processing position. The trimming device (2) that moves to the processing position performs trimming processing on the sheet (1).

4. The servo-guided contouring and trimming mechanism according to claim 3, characterized in that: An X-axis elastic buffer assembly and a Z-axis elastic buffer assembly are provided between the Z-axis slide (34) and the X-axis slide (9). The X-axis elastic buffer assembly provides elastic buffer for the X-axis movement of the trimming device (2), and the Z-axis elastic buffer assembly provides elastic buffer for the Z-axis movement of the trimming device (2).

5. The trimming method of the servo contour tracking trimming mechanism as described in any one of claims 1-4, characterized in that: Includes the following steps: Step 1: The sheet material (1) is conveyed along the positive X-axis direction on the conveyor line (28). At this time, the center of the trimming device (2) is located at the initial position (O1). The control system detects the moving speed V1 of the sheet material (1) through the encoder on the conveyor line (28). The control system obtains the moving speed V1 of the sheet material (1) and calculates the conveying position of the sheet material (1). When the front side of the sheet material (1) exceeds the center of the trimming device (2) by a distance d1, the X-axis drive assembly drives the trimming device (2) to move along the positive X-axis direction at a moving speed V1. The Z-axis drive assembly drives the trimming device (2) to move downward along the Z-axis until the radial contour wheel (5) contacts the top front end of the sheet material (1). At this time, the center of the trimming device (2) is located at the first trimming position (O2), and the trimming cutter (20) trims the top front end of the sheet material (1). Step 2: The X-axis drive assembly drives the trimming device (2) to move along the positive X-axis at a speed of V2, where V2 > V1; when the center of the trimming device (2) exceeds the front side of the board (1) by a distance of d2, the center of the trimming device (2) is located at the second trimming position (O3). The X-axis drive assembly drives the trimming device (2) to move along the positive X-axis at a speed of V1. The Z-axis drive assembly drives the trimming device (2) to move downward along the Z-axis. The radial contour wheel (5) contacts the front side of the board (1), and the trimming tool (20) trims the front side of the board (1). Step 3: When the center of the trimming device (2) extends downward beyond the bottom of the board (1) by a distance of d3, the center of the trimming device (2) is located at the third trimming position (O4). The X-axis drive assembly drives the trimming device (2) to move in the opposite direction of the X-axis at a moving speed of V3. The radial contour wheel (5) contacts the bottom front end of the board (1), and the trimming cutter (20) trims the bottom front end of the board (1). Step 4: When the distance between the front side of the board (1) and the center of the trimming device (2) is d4, the center of the trimming device (2) is located at the fourth trimming position (O5), and the trimming process of the front end of the board (1) is completed. Step 5: The sheet material (1) continues to be conveyed along the positive direction of the X-axis; when the center of the trimming device (2) exceeds the rear side of the sheet material (1) by a distance of d5, the center of the trimming device (2) is located at the fifth trimming position (O6), the X-axis drive assembly drives the trimming device (2) to move along the opposite direction of the X-axis at a moving speed of V4, the radial contour wheel (5) contacts the bottom rear end of the sheet material (1), and the trimming cutter (20) trims the bottom rear end of the sheet material (1); Step 6: When the distance between the rear side of the plate (1) and the center of the trimming device (2) is d6, the center of the trimming device (2) is located at the sixth trimming position (O7). The X-axis drive assembly drives the trimming device (2) to move along the positive X-axis at a moving speed V1. The Z-axis drive assembly drives the trimming device (2) to move upward along the Z-axis. The radial contour wheel (5) contacts the rear side of the plate (1), and the trimming tool (20) trims the rear side of the plate (1). Step 7: When the distance between the center of the trimming device (2) and the top rear end of the board (1) is d7, the center of the trimming device (2) is located at the seventh trimming position (O8). The X-axis drive assembly drives the trimming device (2) to move along the positive X-axis direction at a moving speed V5, where V5 > V1. The radial contour wheel (5) contacts the top rear end of the board (1), and the trimming cutter (20) trims the top rear end of the board (1). Step 8: When the center of the trimming device (2) exceeds the rear side of the board (1) by a distance of d8, the center of the trimming device (2) is located at the eighth trimming position (O9). The Z-axis drive assembly drives the trimming device (2) to move upward along the Z-axis to the finished position (O10). The radial contour wheel (5) and the trimming cutter (20) leave the top rear end of the board (1), thus completing the trimming of the front and rear ends of a board (1). The above steps are repeated to trim the next board (1).

6. The trimming method according to claim 5, characterized in that: The length of the board (1) is L; When L > d4 + d5, the Z-axis drive assembly drives the trimming device (2) to move downward along the Z-axis from the fourth trimming position (O5) to the first clearance position (Oa). Then, the X-axis drive assembly drives the trimming device (2) to move in the opposite direction along the X-axis from the first clearance position (Oa) to the second clearance position (Ob). After that, the Z-axis drive assembly drives the trimming device (2) to move upward along the Z-axis from the second clearance position (Ob) to the fifth trimming position (O6). When L≤d4+d5, the X-axis drive assembly drives the trimming device (2) to move from the third trimming position (O4) to the sixth trimming position (O7).

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