An adaptive feedback special-shaped flexible material cutting device

Abstract

The present invention relates to an adaptive feedback special-shaped flexible material cutting device. It includes a frame, a stepping movement mechanism, a fixed plate, a tool mounting shaft, strain gauges, a blade, an electric push rod, a tool motor, a cylinder and a controller. Two upper strain gauges and two lower strain gauges distributed along the Y direction are used to detect the torque of the tool mounting shaft rotating around the X axis. Similarly, two upper strain gauges and two lower strain gauges distributed along the X direction are relied on to detect the torque of the tool mounting shaft rotating around the Y axis. The acting force in the Z direction is obtained by detecting the driving air pressure of the cylinder; then after being processed by the controller, the two cylinders are respectively controlled to act, and the length of their telescopic rods is adjusted to compensate for the torque around the X axis. The two electric push rods are respectively controlled to act, and the length of their telescopic push rods is adjusted to compensate for the torque around the Y axis. The telescopic rods of the two cylinders are controlled to act synchronously to compensate for the acting force in the Z direction. The processing accuracy of the cutting device can be improved and the cutting quality can be enhanced.

Description

Technical Field

[0001] The present invention relates to an adaptive feedback cutting device for shaped flexible materials. Background Art

[0002] Shaped flexible materials refer to a kind of flexible materials with uneven thickness, toughness, hardness, etc. at various parts. The surfaces of these materials are uneven or have some special structures, such as alligator skin with uneven surface, wallpaper with relief, and plates with uneven thickness, etc. When performing efficient cutting operations, the acting forces of the cutting tool on such materials are different in form, and the cutting tool is prone to various displacements such as jumping, jittering, and twisting, resulting in burrs or defect problems at the cut of the cut material.

[0003] Therefore, how to eliminate problems such as the jitter and deflection of the cutting tool in all directions caused by uneven materials has become the key to improving the accuracy, cutting efficiency, and cutting quality of the cutting device. Summary of the Invention

[0004] The purpose of the present invention is to provide an adaptive feedback cutting device for shaped flexible materials that can detect the torques of the cutting tool around the X and Y axes and the acting force along the Z direction in real time and automatically reverse compensate in time to prevent the cutting tool from jittering and deflecting.

[0005] The technical solution of the present invention is as follows:

[0006] The adaptive feedback cutting device for shaped flexible materials includes:

[0007] A frame;

[0008] A stepping movement mechanism, installed on the frame, including an output end that can move in three mutually perpendicular directions of X, Y, and Z;

[0009] A fixing plate, with one side surface fixed on the output end, and the other side surface is respectively provided with mounting sleeves at the upper and lower parts. The mounting sleeves have square holes that penetrate coaxially along the Z direction;

[0010] A cutting tool mounting shaft, simultaneously passing through the square holes of the two mounting sleeves. Strain gauges are respectively arranged between the cutting tool mounting shaft and the inner wall surfaces of the square holes. The lower end of the cutting tool mounting shaft is provided with a U-shaped fork head. A cutting blade is installed in the opening of the U-shaped fork head through a rotating shaft, and the axis of the rotating shaft extends along the Y direction;

[0011] There are two electric push rods, symmetrically arranged on the opposite sides of the two mounting sleeves in the Z direction respectively. The electric push rod includes a body and a telescopic push rod that can telescopically move along the X direction relative to the body. The body is fixed on the fixing plate, and the front ends of the two telescopic push rods are respectively fixed relative to the two ends of the cutting tool mounting shaft;

[0012] A cutting tool motor is used to drive the rotating shaft to rotate, and the output shaft of the cutting tool motor is in transmission connection with the rotating shaft;

[0013] There are two cylinders, which are symmetrically arranged on both sides of the cutting tool mounting shaft in the Y direction respectively. Each cylinder includes a cylinder body and a telescopic rod that can be telescoped along the Z direction relative to the cylinder body. The cylinder body is fixed on the fixing plate, and the front end of the telescopic rod has a connecting rod extending along the Y direction. The front ends of the two connecting rods are symmetrically fixed on both sides of the cutting tool mounting shaft along the Y direction respectively;

[0014] A controller is used to receive the pressures of each strain gauge and the cylinders, and after processing, control the electric push rods and the cylinders to perform corresponding actions to compensate for the torques of the cutting tool around the X and Y directions and the acting force along the Z direction.

[0015] Further, the fixing plate is fixed on the output end through a back bracket, and the back bracket is L-shaped.

[0016] Further, the cutting tool mounting shaft is a square shaft.

[0017] Further, the stepping movement mechanism includes a synchronous belt drive mechanism that can move along the X direction and lead screw drive mechanisms that can move along the Y and Z directions respectively.

[0018] The beneficial effects of the present invention: When the self-adaptive feedback special-shaped flexible material cutting equipment of the present invention is in use, after starting, the cutting tool motor drives the blade to rotate through the rotating shaft to cut special-shaped flexible materials such as alligator skin and embossed wallpaper. Since the surfaces of these materials are uneven, the cutting tool may be subjected to torsional force or resistance, etc., resulting in the blade being prone to movement trends such as shaking and torsion. At this time, relying on the two upper strain gauges and the two lower strain gauges distributed along the Y direction installed in the two mounting sleeves to sense and detect the rotational torque of the cutting tool mounting shaft around the X axis. Similarly, relying on the two upper strain gauges and the two lower strain gauges distributed along the X direction to sense and detect the rotational torque of the cutting tool mounting shaft around the Y axis, and obtaining the acting force in the Z direction by detecting the driving air pressure of the cylinders; then after being processed by the controller, control the actions of the two cylinders respectively, adjust the length of their telescopic rods to compensate for the rotational torque around the X axis, control the actions of the two electric push rods respectively, adjust the length of their telescopic push rods to compensate for the rotational torque around the Y axis, and control the telescopic rods of the two cylinders to act synchronously to compensate for the acting force along the Z direction. It can be seen that the equipment can detect the torques of the cutting tool around the X and Y axes and the acting force along the Z direction in real time and automatically reverse compensate in time to prevent the cutting tool from shaking and deflecting, thereby improving the processing accuracy of the cutting equipment, improving the cutting quality, improving the cutting efficiency, and extending the service life of the cutting tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the self-adaptive feedback special-shaped flexible material cutting equipment of the present invention;

[0020] Figure 2 The front view of the adaptive feedback cutting module;

[0021] Figure 3 is Figure 2 the right view of;

[0022] Figure 4 is Figure 3 the sectional view taken along line A-A in;

[0023] In the figure: 1-frame, 2-step moving mechanism, 21-X-direction synchronous belt drive mechanism, 22-Y-direction lead screw drive mechanism, 23-Z-direction lead screw drive mechanism, 231-output slider (i.e., the output end); 3-fixed plate, 31-mounting sleeve, 32-square hole; 4-tool mounting shaft, 41-U-shaped fork head, 5-strain gauge, 6-rotating shaft, 7-blade, 8-tool motor, 9-electric push rod, 91-cylinder block, 92-telescopic push rod, 10-air cylinder, 101-cylinder block, 102-expansion rod, 103-connecting rod, 20-back bracket. Specific embodiments

[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to 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 used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the detailed description of the embodiments of the present invention provided in the drawings below is not intended to limit the scope of the claimed present invention, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

[0026] It should be noted that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0027] The features and performance of the present invention will be further described in detail below in conjunction with embodiments.

[0028] An implementation manner of an adaptive feedback special-shaped flexible material cutting device of the present invention: As Figures 1-4 shown, the adaptive feedback special-shaped flexible material cutting device includes a frame 1, a stepping movement mechanism 2, a fixing plate 3, a tool mounting shaft 4, a strain gauge 5, a blade 7, an electric push rod 9, a tool motor 8, a cylinder 10 and a controller, etc.

[0029] The frame 1 is of a rectangular frame structure and is made of steel.

[0030] The stepping movement mechanism 2 is installed on the frame 1 and includes an X-direction synchronous belt drive mechanism 21, a Y-direction lead screw drive mechanism 22, and a Z-direction lead screw drive mechanism 23. The Z-direction lead screw drive mechanism 23 has an output slider 231, that is, the output end. Above the X-direction synchronous belt drive mechanism 21 of the cuboid frame structure, a Y-direction lead screw drive mechanism 22 for realizing movement in the Y direction is laid. On the Y-direction lead screw drive mechanism 22, a Z-direction lead screw drive mechanism 23 for realizing movement in the Z direction is installed. The adaptive feedback cutting module is installed on the output slider 231 of the Z-direction lead screw drive mechanism 23 and realizes displacement in the Z direction under its drive. The special-shaped flexible material to be cut is placed on the flexible cutting panel of the cuboid, and the flexible cutting panel is placed on the fixed body of the X-direction synchronous belt drive mechanism 21.

[0031] In the adaptive feedback cutting module:

[0032] One side surface of the fixing plate 3 is fixed to the output end, and on the other side surface, mounting sleeves 31 are respectively arranged up and down. The mounting sleeve 31 has a square hole 32 that penetrates coaxially along the Z direction. The fixing plate 3 is fixed to the output end through a back bracket 20, and the back bracket 20 is L-shaped.

[0033] The tool installation shaft 4 is simultaneously installed in the square holes 32 of the two installation sleeves 31, and strain gauges 5 are respectively arranged between the tool installation shaft 4 and each inner wall surface of the two square holes 32. The lower end of the tool installation shaft 4 is provided with a U-shaped fork head 41, and a blade 7 is installed in the opening of the U-shaped fork head 41 through a rotating shaft 6, and the axis of the rotating shaft 6 extends along the Y direction. The tool installation shaft 4 is a square shaft.

[0034] There are two electric push rods 9, which are symmetrically arranged on the opposite sides of the two mounting sleeves 31 in the Z direction. The electric push rod 9 includes a body and a telescopic push rod 92 that can telescopically move along the X direction relative to the body. The body is fixed on the fixed plate 3, and the front ends of the two telescopic push rods 92 are respectively fixed relative to the two ends of the tool mounting shaft 4.

[0035] The tool motor 8 is used to drive the rotating shaft 6 to rotate, and the output shaft of the tool motor 8 is drivingly connected to the rotating shaft 6 .

[0036] There are two cylinders 10, which are symmetrically arranged on both sides of the tool mounting axis 4 in the Y direction. Each cylinder 10 includes a cylinder body 10191 and a telescopic rod 102 that can be telescoped along the Z direction relative to the cylinder body 10191. The cylinder body 10191 is fixed on the fixed plate 3. The front end of the telescopic rod 102 has a connecting rod 103 extending along the Y direction. The front ends of the two connecting rods 103 are symmetrically fixed on both sides of the tool mounting axis 4 along the Y direction.

[0037] The controller is used to receive the pressure of each strain gauge 5 and cylinder 10, and after processing, control the electric push rod 9 and cylinder 10 to perform corresponding actions to compensate for the moment of the tool around the X and Y directions and the force along the Z direction.

[0038] When an adaptive feedback special-shaped flexible material cutting device of the present invention is in use, after startup, the cutter motor 8 drives the blade 7 to rotate through the rotating shaft 6 to cut special-shaped flexible materials such as alligator skin and embossed wallpaper. Since the surfaces of these materials are uneven, the cutter may be subjected to torsional forces or resistances, etc., resulting in the blade 7 being prone to movement trends such as jitter and torsion. At this time, two upper strain gauges 5 and two lower strain gauges 5 distributed along the Y direction and installed in the two mounting sleeves 31 are relied on to sense and detect the torque of the cutter mounting shaft 4 rotating around the X axis. Similarly, two upper strain gauges 5 and two lower strain gauges 5 distributed along the X direction are relied on to sense and detect the torque of the cutter mounting shaft 4 rotating around the Y axis, and the force in the Z direction is obtained by detecting the driving air pressure of the detection cylinder 10; then after being processed by the controller, the two cylinders 10 are respectively controlled to act, and the length of their telescopic rods 102 is adjusted to compensate for the torque around the X axis, the two electric push rods 9 are respectively controlled to act, and the length of their telescopic push rods 92 is adjusted to compensate for the torque around the Y axis, and the telescopic rods 102 of the two cylinders 10 are controlled to act synchronously to compensate for the force in the Z direction. Thus, it can be seen that the device can detect the torques of the cutter around the X and Y axes and the force in the Z direction in real time and automatically reverse compensate in time to prevent the cutter from jittering and deflecting, thereby improving the processing accuracy of the cutting device, improving the cutting quality, improving the cutting efficiency, and prolonging the service life of the cutter.

[0039] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the content of the specification and drawings of the present invention should, by the same token, be included in the protection scope of the present invention.

Claims

1. An adaptive feedback special-shaped flexible material cutting device, characterized in that include: frame; The stepping moving mechanism is mounted on the frame and includes an output end that can move in three mutually perpendicular directions: X, Y, and Z; A fixing plate, one side of which is fixed on the output end, and the other side of which is provided with mounting sleeves at the top and bottom, respectively, and the mounting sleeves have square holes that penetrate the same axis along the Z direction; The tool installation shaft is simultaneously installed in the square holes of the two installation sleeves. Strain gauges are respectively arranged between the tool installation shaft and each inner wall surface of the two square holes. A U-shaped fork is arranged at the lower end of the tool installation shaft. A blade is installed in the opening of the U-shaped fork through a rotating shaft. The axis of the rotating shaft extends along the Y direction. There are two electric push rods, which are symmetrically arranged on the two sides of the two mounting sleeves that are away from each other in the Z direction. The electric push rods include a body and a telescopic push rod that can telescopically move along the X direction relative to the body. The body is fixed on the fixed plate, and the front ends of the two telescopic push rods are respectively fixed relative to the two ends of the tool mounting shaft; A tool motor is used to drive the rotating shaft to rotate, and the output shaft of the tool motor is drivingly connected to the rotating shaft; There are two cylinders, which are symmetrically arranged on both sides of the tool installation axis in the Y direction. Each cylinder includes a cylinder body and a telescopic rod that can be telescoped along the Z direction relative to the cylinder body. The cylinder body is fixed on a fixed plate. The front end of the telescopic rod has a connecting rod extending along the Y direction. The front ends of the two connecting rods are symmetrically fixed on both sides of the tool installation axis along the Y direction. The controller is used to receive the pressure of each strain gauge and cylinder, and after processing, control the electric push rod and cylinder to perform corresponding actions to compensate for the moment of the tool around the X and Y directions and the force along the Z direction.

2. The adaptive feedback special-shaped flexible material cutting device according to claim 1, characterized in that The fixing plate is fixed on the output end through a back bracket, and the back bracket is L-shaped.

3. The adaptive feedback special-shaped flexible material cutting device according to claim 1, characterized in that The tool mounting shaft is a square shaft.

4. The adaptive feedback special-shaped flexible material cutting device according to claim 1, characterized in that The stepping moving mechanism comprises a synchronous belt transmission mechanism which can move along the X direction and a screw transmission mechanism which can move along the Y and Z directions respectively.

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