A flexible material processing control system and cutting machine

Abstract

The utility model discloses a kind of flexible material processing control system and cutting machine, it is related to flexible material processing technical field, wherein, flexible material processing control system, comprising:Processing point coordinate acquisition module, for obtaining the processing point coordinate of the processing mechanism acting on the workpiece;Several independent fixed components, distribute in the workbench, for fixing the workpiece of the workbench corresponding position;Control module, for according to the processing point coordinate of acquisition, control the fixed component adjustment fixed force corresponding to the processing point coordinate;The flexible material processing control system and cutting machine of this, through processing point coordinate acquisition module real-time acquisition processing point coordinate, and fixed force adjustment is carried out to corresponding independent fixed component on workbench, to adapt the force change between flexible material workpiece and processing mechanism, avoid the deformation of flexible material workpiece, and then guarantee the final processing accuracy of workpiece.

Description

Technical Field

[0001] This utility model relates to the field of flexible material processing technology, and more specifically, to a flexible material processing control system. Furthermore, this utility model also relates to a cutting machine including the aforementioned flexible material processing control system. Background Technology

[0002] When performing precision machining on a workpiece, it is necessary to fix the workpiece in place to ensure that it has a fixed position during the machining process. The workpiece is then machined by adjusting the position of the machining tool to ensure machining accuracy.

[0003] However, in actual processing, some workpieces are made of flexible materials, such as leather and thin-film carbon fiber. When processing the workpieces, they need to be fixed first. During the processing, the fixing force cannot be adjusted with the processing progress. There is a possibility that the workpiece will deform under the force of the tool, causing the actual position of the workpiece to change. That is, the position of the processing point where the workpiece contacts the tool is uncertain, which seriously affects the final workpiece processing accuracy.

[0004] In summary, how to solve the problem that the workpiece fixing force cannot be adjusted with the processing progress during the processing of flexible materials is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a flexible material processing control system, which acquires the coordinates of the processing point in real time through the processing point coordinate acquisition module, and adjusts the fixing force of the corresponding independent fixing components on the worktable to adapt to the force changes between the flexible material workpiece and the processing mechanism, avoids deformation of the flexible material workpiece, and thus ensures the final processing accuracy of the workpiece.

[0006] Another objective of this invention is to provide a cutting machine that includes the above-mentioned flexible material processing control system, which adjusts the negative pressure suction of the corresponding negative pressure adsorption module according to the obtained processing point coordinates to adapt to the changes in the force between the processing mechanism and the workpiece.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A flexible material processing control system is used for processing control of flexible processing equipment. The flexible processing equipment includes a worktable, a linkage mechanism, and a processing mechanism. The worktable is used to fix the workpiece to be processed, the processing mechanism is used to process the workpiece, and the linkage mechanism is used to drive the processing mechanism to move relative to the worktable.

[0009] The flexible material processing control system includes:

[0010] The machining point coordinate acquisition module is used to acquire the machining point coordinates of the machining mechanism acting on the workpiece;

[0011] Several independent fixing components are distributed within the worktable to fix the workpiece at the corresponding position on the worktable;

[0012] The control module is used to control the fixing component corresponding to the processing point coordinates to adjust the fixing force according to the obtained processing point coordinates.

[0013] A cutting machine, comprising:

[0014] The workbench includes several independently controlled negative pressure adsorption modules arranged in an array;

[0015] Processing mechanism;

[0016] Linkage mechanism;

[0017] The flexible material processing control system described above;

[0018] The control module is used to control the negative pressure adsorption module corresponding to the obtained processing point coordinates to adjust the negative pressure suction force.

[0019] Preferably, the negative pressure adsorption module includes an adsorption platform, a proportional valve, a vacuum tank, and a vacuum pump connected in series, and the control units of the proportional valve and the vacuum pump are electrically connected to the control module.

[0020] Preferably, the negative pressure adsorption module includes a pressure sensor, which is electrically connected to the control module to detect the internal pressure of the adsorption platform and send the detection result to the control module.

[0021] Preferably, the linkage mechanism includes a three-axis linkage mechanism and a tool head mounting base. The three-axis linkage mechanism is used to drive the tool head mounting base to move relative to the worktable along three mutually perpendicular axes of X, Y, and Z. The tool head mounting base is used to fix and assemble the machining mechanism.

[0022] Preferably, the tool head mounting base includes a rotary drive mechanism for driving the machining mechanism to rotate relative to the tool head mounting base about at least one of the three axes X, Y, and Z.

[0023] Preferably, the machining point coordinate acquisition module includes at least three displacement sensors, which are used to detect the displacement of the tool head mounting base and / or the machining mechanism relative to the worktable along the X, Y, and Z axes, respectively.

[0024] Preferably, the machining point coordinate acquisition module includes several angle sensors for detecting the rotation angle of the machining mechanism relative to the cutter head mounting base and / or the worktable around the X, Y, and Z axes.

[0025] Preferably, the cutter head mounting base includes a support rod of a preset height for suspending the machining mechanism and functional and / or communication wiring harness.

[0026] Preferably, the cutting machine further includes a storage module for storing adjustment parameters of the negative pressure adsorption module corresponding to different workpiece materials;

[0027] The storage module is electrically connected to the control module.

[0028] The flexible material processing control system provided by this utility model has at least the following advantages compared with the prior art:

[0029] The coordinates of the processing point of the module processing mechanism are obtained by obtaining the coordinates of the processing point. The corresponding fixed component in the worktable is adjusted in real time by the control module to change the fixing state of the fixed component on the workpiece, so that the workpiece adapts to the changes in the processing force applied to it by the processing mechanism, avoids the deformation of the workpiece caused by the changes in the processing force, and thus ensures the processing accuracy of the workpiece.

[0030] The cutting machine provided by this utility model includes the above-mentioned flexible material processing control system and has the same beneficial effects. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the specific cutting machine provided by this utility model;

[0033] Figure 2 This is a schematic diagram of the specific processing mechanism provided by this utility model;

[0034] Figure 3 This is an assembly diagram of the specific processing mechanism and the cutter head mounting seat provided by this utility model;

[0035] Figure 4 This is a schematic diagram of the adsorption force adjustment process of the specific adsorption module provided by this utility model.

[0036] In the picture:

[0037] 1. Workbench; 11. Negative pressure adsorption module;

[0038] 2. Linkage mechanism; 21. X-axis slide rail; 22. Y-axis slide rail; 23. Z-axis slide rail; 24. Crossbeam; 25. Tool head mounting base;

[0039] 3. Machining mechanism; 31. Transducer; 32. Cutting head. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] The core of this utility model is to provide a flexible material processing control system. The system acquires the coordinates of the processing point in real time through a processing point coordinate acquisition module and adjusts the fixing force of the corresponding independent fixing components on the worktable to adapt to the changes in the force between the flexible material workpiece and the processing mechanism, thereby avoiding deformation of the flexible material workpiece and ensuring the final processing accuracy of the workpiece.

[0042] Another core aspect of this invention is to provide a cutting machine that includes the aforementioned flexible material processing control system. Based on the obtained processing point coordinates, the negative pressure suction of the corresponding negative pressure adsorption module is adjusted to adapt to changes in the force between the processing mechanism and the workpiece.

[0043] Please refer to Figures 1-4 A flexible material processing control system is used for processing control of flexible processing equipment. The flexible processing equipment includes a worktable 1, a linkage mechanism 2, and a processing mechanism 3. The worktable 1 is used to fix the workpiece to be processed, the processing mechanism 3 is used to process the workpiece, and the linkage mechanism 2 is used to drive the processing mechanism 3 to move relative to the worktable 1.

[0044] Flexible material processing control system, including:

[0045] The machining point coordinate acquisition module is used to acquire the coordinates of the machining points on the workpiece acted upon by the machining mechanism 3;

[0046] Several independent fixing components are distributed within the worktable 1 to fix the workpiece at the corresponding position on the worktable 1;

[0047] The control module is used to control the fixed component corresponding to the obtained machining point coordinates to adjust the fixing force.

[0048] Several independent fixing components are set inside the worktable 1 to fix the workpiece at different positions. The machining point coordinates of the machining mechanism 3 are acquired in real time through the machining point coordinate acquisition module and sent to the control module. The control module controls the fixing components corresponding to the machining point coordinates to adjust the fixing force, that is, change the workpiece fixing state at the corresponding position of the machining point coordinates, so that the workpiece uses the machining force applied to the workpiece by the machining mechanism 3, thereby avoiding deformation of the workpiece and displacement relative to the worktable 1, thus ensuring that the workpiece has a stable position and ensuring the final machining accuracy of the workpiece.

[0049] In addition to the flexible material processing control system disclosed in the above embodiments, this utility model also provides a cutting machine, including:

[0050] The workbench 1 includes several independently controlled negative pressure adsorption modules 11 arranged in an array;

[0051] Processing mechanism 3;

[0052] Linkage mechanism 2;

[0053] The aforementioned flexible material processing control system;

[0054] The control module is used to adjust the negative pressure suction of the negative pressure adsorption module 11 corresponding to the processing point coordinates based on the obtained processing point coordinates.

[0055] like Figure 1 As shown, several negative pressure adsorption modules 11 are arranged in an array on the workbench 1. The workpiece is fixed by negative pressure adsorption. By adjusting the negative pressure of different negative pressure adsorption modules 11, the adsorption force at different positions on the surface of the workbench 1 can be controlled differently. For example, when processing a flexible material workpiece, when the processing point is at the center of the workpiece, the adsorption force at the center of the workpiece is increased, and the adsorption force at the edge of the workpiece is appropriately reduced to weaken the deformation of the workpiece itself. When the processing point is at the edge of the workpiece, the adsorption force at the edge of the workpiece is increased, and the adsorption force at the center of the workpiece is reduced. The above operation facilitates the concentration of effective negative pressure suction, ensures the fixing force of the processing position, and reduces the overall energy consumption.

[0056] In some embodiments, a clamping mechanism is used to clamp the workpiece, and the above-mentioned functions can also be achieved by adjusting the clamping force of the clamping mechanism.

[0057] In some embodiments, the negative pressure adsorption module 11 includes an adsorption platform, a proportional valve, a vacuum tank, and a vacuum pump connected in series, and the control units of the proportional valve and the vacuum pump are electrically connected to the control module.

[0058] like Figure 4As shown, the vacuum pump operates, creating a negative pressure inside the vacuum tank. By adjusting the flow rate of the proportional valve, the adsorption force of the adsorption platform is controlled.

[0059] In practical use, the control module adopts a PC host computer and exchanges signals with the PLC industrial control computer through 485 communication. After the PLC industrial control computer obtains the control signal, it amplifies the signal through a proportional amplifier, controls the proportional valve to control the flow rate, and then adjusts the adsorption force of the adsorption platform.

[0060] Among them, the proportional valve is preferably a proportional solenoid valve.

[0061] In some embodiments, the negative pressure adsorption module 11 includes a pressure sensor electrically connected to the control module, used to detect the internal pressure of the adsorption platform and send the detection result to the control module.

[0062] like Figure 4 As shown, a pressure sensor is integrated inside the adsorption platform to detect the internal pressure of the adsorption platform. When the pressure of the adsorption platform exceeds the preset control pressure range, the proportional valve is controlled to adjust the flow rate, thereby bringing the pressure of the adsorption platform back to the preset control pressure range, realizing closed-loop control of the adsorption force of the adsorption platform and improving the control accuracy of the adsorption force.

[0063] In some embodiments, the linkage mechanism 2 includes a three-axis linkage mechanism and a tool head mounting base 25. The three-axis linkage mechanism is used to drive the tool head mounting base 25 to move relative to the worktable 1 along three mutually perpendicular axes of X, Y, and Z. The tool head mounting base 25 is used to fix the assembly and processing mechanism 3.

[0064] like Figure 1 As shown, X-axis slide rails 21 are respectively set on both sides of the worktable 1, and a crossbeam 24 is set between two linear motors on the X-axis slide rails 21 on both sides. A Y-axis slide rail 22 is set on the crossbeam 24. A horizontal slider is slidably set on the Y-axis slide rail 22 by a linear motor. A Z-axis slide rail 23 is set on the horizontal slider. The tool head mounting seat 25 is slidably mounted on the Z-axis slide rail 23 by a linear motor. The movement of the three-axis linear motors drives the tool head mounting seat 25 to move in three axes relative to the worktable 1, thereby improving the degree of freedom of the tool head mounting seat 25 during machining.

[0065] In practical applications, the crossbeam 24 is designed to be widened longitudinally and reinforced with internal ribs to increase the rigidity of the crossbeam 24 in the Z-axis direction, avoid the crossbeam 24 from being deformed around the workpiece due to the interaction force between the machining mechanism 3 and the workpiece, and further improve the machining positioning accuracy of the machining mechanism 3.

[0066] In some embodiments, the tool holder 25 includes a rotary drive mechanism for driving the machining mechanism 3 to rotate relative to the tool holder 25 about at least one of the three axes X, Y, and Z.

[0067] like Figure 3 As shown, a set of one or two sets of rotary drive mechanisms are set in the tool head mounting base 25 via a motor. When a set of rotary drive mechanisms that rotates on the X-axis or Y-axis is set, it forms a four-axis linkage with the three-axis linkage mechanism mentioned above, further improving the degree of freedom of the machining mechanism 3 during machining.

[0068] Two sets of rotary drive mechanisms are set in the tool head mounting base 25 to drive the machining mechanism 3 to rotate around the Z-axis and X-axis, or around the Z-axis and Y-axis. Combined with the above-mentioned three-axis linkage mechanism, they form a five-axis linkage, which further enhances the degree of freedom of the machining mechanism 3 and improves its adaptability to machining workpieces with complex curved surfaces.

[0069] In some embodiments, the machining point coordinate acquisition module includes at least three displacement sensors, which are used to detect the displacement of the tool head mounting base 25 and / or the machining mechanism 3 relative to the worktable 1 along the X, Y, and Z axes, respectively.

[0070] Magnetic scales and other sensors are arranged parallel to the X-axis slide rail 21, Y-axis slide rail 22 and Z-axis slide rail 23, respectively, as displacement sensors of the corresponding axes, so as to obtain the displacement of the machining mechanism 3 in each axis under the drive of the linkage mechanism 2, and thus obtain the real-time coordinates of the machining mechanism 3.

[0071] In some embodiments, the machining point coordinate acquisition module includes several angle sensors for detecting the rotation angle of the machining mechanism 3 relative to the tool head mounting base 25 and / or the worktable 1 around the X, Y, and Z axes.

[0072] Meanwhile, an encoder and other angle sensors are installed in the rotary drive mechanism inside the tool head mounting base 25 to obtain the rotation angle of the machining mechanism 3 relative to the tool head mounting base 25. Then, the machining point coordinates of the machining mechanism 3 for machining the workpiece are obtained by calculation, thereby further improving the accuracy of obtaining the machining point coordinates.

[0073] In some embodiments, the tool mount 25 includes a strut at a preset height for suspending the machining mechanism 3 and functional and / or communication harnesses.

[0074] The processing mechanism 3 will rotate under the action of the rotary drive mechanism, causing the power supply and communication wire harness to twist. Therefore, a strut is used to increase the suspension height of the wire harness, so that the total twist angle of the wire harness is distributed in a longer wire harness, reducing the amount of twist per unit length of wire harness and avoiding wire harness breakage.

[0075] In some embodiments, the cutting machine further includes a storage module for storing adjustment parameters of the negative pressure adsorption module 11 corresponding to different workpiece materials;

[0076] The storage module is electrically connected to the control module.

[0077] By integrating a storage module into the system, the processing and fixing force parameters corresponding to different materials are pre-programmed. When processing the corresponding material, the user only needs to input the material to be processed, and the system can automatically call the pre-stored parameters in the storage module to control the fixing components.

[0078] In practical applications, such as Figure 2 As shown, the processing mechanism 3 preferably uses an ultrasonic cutting tool, including a transducer 31 and a cutting head 32. The cutting head 32 directly contacts the workpiece for processing. The transducer 31 is installed in conjunction with the cutting head mounting base 25, which can reduce the interaction force between the tool and the material during processing, thereby reducing the pressure deformation of the workpiece caused by cutting.

[0079] Alternatively, processing mechanism 3 may use a laser cutting blade to adopt a non-contact cutting method to further reduce the impact on workpiece deformation, but it should be noted that the material is not heat-sensitive.

[0080] The structure of the other parts of the cutting machine is described in reference to existing technology and will not be repeated here.

[0081] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0082] The flexible material processing control system and cutting machine provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A flexible material processing control system for processing control of a flexible processing equipment, the flexible processing equipment comprising a worktable (1), a linkage mechanism (2), and a processing mechanism (3), wherein the worktable (1) is used to fix a workpiece to be processed, the processing mechanism (3) is used to process the workpiece, and the linkage mechanism (2) is used to drive the processing mechanism (3) to move relative to the worktable (1); characterized in that, The flexible material processing control system includes: The processing point coordinate acquisition module is used to acquire the processing point coordinates of the processing mechanism (3) acting on the workpiece; Several independent fixing components are distributed within the worktable (1) for fixing the workpiece at the corresponding position of the worktable (1); The control module is used to control the fixing component corresponding to the processing point coordinates to adjust the fixing force according to the obtained processing point coordinates.

2. A cutting machine, characterized in that, include: The workbench (1) includes several independently controlled and arrayed negative pressure adsorption modules (11). Processing mechanism (3); Linkage mechanism (2); The flexible material processing control system as described in claim 1; The control module is used to control the negative pressure adsorption module (11) corresponding to the processing point coordinates to adjust the negative pressure suction force according to the obtained processing point coordinates.

3. The cutting machine according to claim 2, characterized in that, The negative pressure adsorption module (11) includes an adsorption platform, a proportional valve, a vacuum tank and a vacuum pump connected in series. The control units of the proportional valve and the vacuum pump are electrically connected to the control module.

4. The cutting machine of claim 3, wherein The negative pressure adsorption module (11) includes a pressure sensor, which is electrically connected to the control module and is used to detect the internal pressure of the adsorption platform and send the detection result to the control module.

5. The cutting machine of claim 2, wherein, The linkage mechanism (2) includes a three-axis linkage mechanism and a tool head mounting base (25). The three-axis linkage mechanism is used to drive the tool head mounting base (25) to move relative to the worktable (1) along three mutually perpendicular axes of X, Y, and Z. The tool head mounting base (25) is used to fix and assemble the processing mechanism (3).

6. The cutting machine of claim 5, wherein, The cutter head mounting base (25) includes a rotary drive mechanism for driving the machining mechanism (3) to rotate relative to the cutter head mounting base (25) about at least one of the three axes X, Y, and Z.

7. The cutting machine according to claim 5, characterized in that, The machining point coordinate acquisition module includes at least three displacement sensors, which are used to detect the displacement of the tool head mounting base (25) and / or the machining mechanism (3) relative to the worktable (1) along the X, Y, and Z axes.

8. The cutting machine of claim 6, wherein, The machining point coordinate acquisition module includes several angle sensors for detecting the rotation angle of the machining mechanism (3) relative to the tool head mounting base (25) and / or the worktable (1) around the X, Y, and Z axes.

9. The cutting machine of claim 6, wherein, The cutter head mounting base (25) includes a support rod of a preset height for suspending the processing mechanism (3) and functional and / or communication harnesses.

10. The cutting machine according to any of claims 2-9, characterized in that, It also includes a storage module for storing the adjustment parameters of the negative pressure adsorption module (11) corresponding to different workpiece materials; The storage module is electrically connected to the control module.

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