Processing method for realizing promotion and pulling linkage efficiency in laser processing numerical control system

Abstract

The present application relates to a kind of processing methods for improving the efficiency of pull linkage in laser processing numerical control system, wherein the method comprises the following steps: (1) after the action condition of triggering pull process is obtained by the host computer software, enter pull process;(2) when the X axis, Y axis, Z axis and B axis of processing machine tool are all set in place, the auxiliary clamping is clamped on pipe;(3) the chuck of processing machine tool is loosened, and the Y axis is positioned to the end of pull;(4) the chuck is clamped, and the pull clamp is loosened;(5) the auxiliary clamping is loosened and positioned to the starting point of processing with the X axis and Y axis simultaneously, end pull action.This processing method for improving the efficiency of pull linkage in laser processing numerical control system using the present application, in the beginning and end of pull process, the linkage of each axis is carried out, which can effectively improve the pull efficiency, and has clear trigger condition (reach the position of external circle, etc.) in the linkage process, which can effectively guarantee the timing of linkage, so as to ensure the accuracy of pull process.

Description

Technical Field

[0001] This invention relates to the field of laser cutting, and more particularly to the field of material pulling technology, specifically a method for improving the efficiency of material pulling linkage in a laser processing CNC system. Background Technology

[0002] In laser processing, when cutting long tubes, if the processing area is large, an auxiliary clamping device is usually used to pull the tube. Since the tube is not processed during the pulling action, the pulling process time is reduced, which can improve the overall processing efficiency.

[0003] The prior art CN115609173A discloses a material pulling device and method for a laser tube cutting machine. This invention adds a sliding mechanism to place the laser cutting head on the sliding mechanism, so that the material pulling process is no longer required when processing long tubes, thereby improving processing accuracy and efficiency.

[0004] The prior art CN108581240B discloses a method for continuous material feeding and replenishment using a hollow chuck for laser cutting of metal tubes. This method achieves rapid switching of the chuck clamping state by coupling and decoupling different axes in the same direction; and it uses a hollow chuck to support the clamping of long tubes and to perform reciprocating feeding and reciprocating pulling of the tubes.

[0005] The prior art CN115026436A discloses an intelligent material pulling method, device and computer-readable storage medium. The invention calculates the optimal material pulling length based on the processing trajectory of the tube; after running the optimal material pulling length using a clamping mechanism, the tube is clamped using a hollow chuck and the clamping mechanism on the tube is released to realize the entire material pulling process.

[0006] The prior art CN114473234A discloses a laser processing control method, device, computer equipment and storage medium. This invention determines whether to perform edge compensation based on the actual edge distance and a preset edge distance threshold. If edge compensation is performed, the target control command is updated and the material is pulled according to the target control command. The processing accuracy is improved by performing edge compensation.

[0007] The prior art CN108340087A discloses a material pulling device and its material pulling method. The invention includes a material gathering device, a driven feeding device and an active feeding device. The material pulling process is realized through a master-slave material pulling ratchet, which is easy to operate and saves labor costs.

[0008] In summary, current material pulling methods mainly focus on designing the material pulling device and ensuring the accuracy of the pulling process. The overall material pulling process still operates sequentially, with each device moving in turn to pull the material, resulting in idle time. Therefore, there is an urgent need for a parallel solution that can effectively improve the efficiency of the material pulling process, thereby reducing idle time, and ensuring the accuracy of the material pulling process through specific triggering conditions. Summary of the Invention

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide a processing method for improving the efficiency of material pulling linkage in a laser processing CNC system.

[0010] To achieve the above objectives, the laser processing CNC system of the present invention provides a method for improving the efficiency of material pulling linkage as follows:

[0011] The method for improving the efficiency of material pulling linkage in this laser processing CNC system is characterized by the following steps:

[0012] (1) The material pulling process begins after the host computer software obtains the action conditions that trigger the material pulling process;

[0013] (2) After the X-axis, Y-axis, Z-axis and B-axis of the processing machine tool are all set in place, clamp the auxiliary clamp onto the tube.

[0014] (3) Loosen the chuck of the machine tool and position the Y-axis at the end point of the material pulling;

[0015] (4) Clamp the chuck and release the material clamp;

[0016] (5) Release the auxiliary clamp and simultaneously position it to the processing start point along the X-axis and Y-axis to end the material pulling action.

[0017] Preferably, the action condition for triggering the material pulling process is specifically as follows:

[0018] The Z-axis is raised to the corresponding pipe's stopping position and simultaneously positioned at the material pulling starting point along with the X-axis and Y-axis.

[0019] Preferably, step (1) specifically includes the following steps:

[0020] (1.1) During the process of raising the Z-axis, when the Z-axis is raised to the position of the outer circle of the pipe, the auxiliary clamping begins to loosen.

[0021] (1.2) During the process of releasing the auxiliary clamp, when the auxiliary clamp opens to the position of the outer circle of the tube, the B axis moves to the starting point of the material pulling.

[0022] Preferably, during the process of obtaining the position of the outer circle of the pipe, the auxiliary clamp needs to monitor its current position in real time.

[0023] Preferably, the position of the circumscribed circle is calculated by the host computer software based on the cross-sectional shape of the pipe, or determined by the user specifying the required elevation position of the Z-axis.

[0024] Preferably, step (5) specifically includes the following steps:

[0025] (5.1) During the process of releasing the auxiliary clamp, when the auxiliary clamp opens to the position of the outer circle of the tube, the B axis begins to move to the processing start point.

[0026] (5.2) During the process of B-axis moving to the machining start point, when B-axis is far from the preset position of the end point, Z-axis begins to descend to the machining position.

[0027] Preferably, the preset position is specifically:

[0028] The host computer software calculates the distance required for the B-axis to trigger the Z-axis movement based on the downward speed of the Z-axis, the distance it descends, and the angle that the B-axis needs to rotate.

[0029] The present invention employs a processing method in the laser processing CNC system to improve the efficiency of material pulling linkage. By linking each axis at the beginning and end of the material pulling process, the material pulling efficiency can be effectively improved. In addition, clear triggering conditions (such as reaching the circumscribed circle position) are set in the linkage process to ensure the timing of the linkage, thereby ensuring the accuracy of the material pulling process. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the machine tool coordinate system.

[0031] Figure 2 This technical solution presents a schematic diagram of the motion at the beginning of the material pulling stage, compared to existing technologies.

[0032] Figure 3 This technical solution presents a motion diagram of the material pulling stage compared to existing technologies.

[0033] Figure 4 This technical solution presents a schematic diagram of the motion at the end of the material pulling stage, compared to existing technologies. Detailed Implementation

[0034] To more clearly describe the technical content of the present invention, the following description is provided in conjunction with specific embodiments.

[0035] Before describing the embodiments of the present invention in detail, it should be noted that, in the following, the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] This laser processing CNC system implements a method to improve the efficiency of material pulling linkage, wherein the method includes the following steps:

[0037] (1) The material pulling process begins after the host computer software obtains the action conditions that trigger the material pulling process;

[0038] (2) After the X-axis, Y-axis, Z-axis and B-axis of the processing machine tool are all set in place, clamp the auxiliary clamp onto the tube.

[0039] (3) Loosen the chuck of the machine tool and position the Y-axis at the end point of the material pulling;

[0040] (4) Clamp the chuck and release the material clamp;

[0041] (5) Release the auxiliary clamp and simultaneously position it to the processing start point along the X-axis and Y-axis to end the material pulling action.

[0042] In a preferred embodiment of the present invention, the action condition for triggering the material pulling process is specifically as follows:

[0043] The Z-axis is raised to the corresponding pipe's stopping position and simultaneously positioned at the material pulling starting point along with the X-axis and Y-axis.

[0044] In a preferred embodiment of the present invention, step (1) specifically includes the following steps:

[0045] (1.1) During the process of raising the Z-axis, when the Z-axis is raised to the position of the outer circle of the pipe, the auxiliary clamping begins to loosen.

[0046] (1.2) During the process of releasing the auxiliary clamp, when the auxiliary clamp opens to the position of the outer circle of the tube, the B axis moves to the starting point of the material pulling.

[0047] In a preferred embodiment of the present invention, during the process of obtaining the position of the outer circle of the pipe, the auxiliary clamp needs to monitor the current position in real time.

[0048] In a preferred embodiment of the present invention, the position of the circumscribed circle is calculated by the host computer software based on the cross-sectional shape of the pipe, or determined by the user specifying the required elevation position of the Z-axis.

[0049] In a preferred embodiment of the present invention, step (5) specifically includes the following steps:

[0050] (5.1) During the process of releasing the auxiliary clamp, when the auxiliary clamp opens to the position of the outer circle of the tube, the B axis begins to move to the processing start point.

[0051] (5.2) During the process of B-axis moving to the machining start point, when B-axis is far from the preset position of the end point, Z-axis begins to descend to the machining position.

[0052] In a preferred embodiment of the present invention, the preset position is specifically as follows:

[0053] The host computer software calculates the distance required for the B-axis to trigger the Z-axis movement based on the downward speed of the Z-axis, the distance it descends, and the angle that the B-axis needs to rotate.

[0054] In practical applications, such as Figures 1 to 4 As shown, taking a machine tool with a rotary axis as an example, the general steps of the existing material pulling process are as follows:

[0055] S1: Raise the Z-axis to the docking position;

[0056] S2: Auxiliary clamping release;

[0057] S3: Position the X / Y / B axes to the starting point of the material pulling process; (where " / " indicates "AND", meaning that X, Y, and B are all positioned to the starting point).

[0058] S4: Material pulling and clamping; (Material pulling and clamping restricts the movement of the pipe in the Y direction)

[0059] S5: Chuck released;

[0060] S6: Y-axis positioning to the end point of material pulling;

[0061] S7: Chuck clamping;

[0062] S8: Material clamping releases;

[0063] S9: Position the X / Y / B axes to the machining start point;

[0064] S10: Auxiliary clamping and tightening;

[0065] S11: The Z-axis descends to the machining position.

[0066] Each of the above steps can only be performed after the previous step is fully completed. Therefore, it can be seen that, except for the axis that needs to move in the current step, the other axes are in an idle state.

[0067] This technical solution uses a linkage approach, and its actual processing steps are as follows:

[0068] S1: The Z-axis is raised to the stopping position and the X / Y-axis is positioned to the starting point of the material pulling process simultaneously;

[0069] S1.1: During the Z-axis lifting process, when the Z-axis is lifted to the position of the outer circle of the pipe, the auxiliary clamping begins to loosen;

[0070] S1.2: During the process of releasing the auxiliary clamp, when the auxiliary clamp opens to the position of the outer circle of the tube, the B-axis moves to the starting point of the material pulling.

[0071] S2: Once the X / Y / Z / B axes are all in position, the auxiliary clamping mechanism will tighten the clamping.

[0072] S3: Chuck released;

[0073] S4: Y-axis positioning to the end point of material pulling;

[0074] S5: Chuck clamping;

[0075] S6: Material clamping releases;

[0076] S7: The auxiliary clamping release and X / Y axis positioning to the machining start point are performed simultaneously;

[0077] S7.1: During the process of releasing the auxiliary clamp, when the auxiliary clamp opens to the position of the outer circle of the tube, the B axis begins to move to the machining start point;

[0078] S7.2: During the process of B-axis moving to the machining start point, when B-axis is a certain distance from the end point, Z-axis begins to descend to the machining position.

[0079] The auxiliary clamping mechanism restricts the jitter of the pipe in the X and Z directions, but does not restrict the movement of the pipe in the Y direction.

[0080] Steps S1.1 and S1.2 are performed after the specified triggering condition is encountered after the start of step S1; steps S7.1 and S7.2 are performed after the specified triggering condition is encountered after the start of step S7.

[0081] Furthermore, in a specific embodiment of this technical solution, the machine tool used is a four-axis laser processing machine tool with a material pulling function. Besides the laser head being able to translate in the X, Y, and Z directions, the tube can also rotate around the Y-axis (B-axis). The machine tool coordinate system used in this embodiment is the same as... Figure 1 The machine tool is controlled by host computer software.

[0082] The specific implementation method is as follows:

[0083] After a certain section of cutting is completed, the host computer software determines that material pulling is required, and then the material pulling process will begin.

[0084] S1: The Z-axis lift and X / Y-axis positioning work simultaneously, which can be understood as the trigger condition being "determining that the material pulling process can begin";

[0085] S1.1: When the Z-axis is raised to the outer circle of the pipe, the opening action of the auxiliary clamp will be triggered. To achieve this auxiliary clamping action, the host computer software needs to be able to control the movement of the auxiliary clamp and other axes (X / Y / Z axes) in parallel. Simultaneously, the Z-axis needs to monitor its current position in real time to obtain the outer circle position. Furthermore, the outer circle position can be calculated by the software based on the pipe's cross-sectional shape, or by the user specifying the required elevation position of the Z-axis.

[0086] S1.2: When the auxiliary clamp is released to the outer circle of the tube, it will trigger a B-axis rotation of the material pulling clamping surface. Similar to S1.1, the B-axis movement implemented here requires the host computer software to be able to control the B-axis in parallel with other axes (X / Y / Z), including the auxiliary clamping movement. Simultaneously, to obtain the outer circle position, the auxiliary clamp should monitor the current position in real time. Furthermore, the method for obtaining the outer circle position is the same as in S1.1.

[0087] S2 to S6 are similar to those used in existing technologies, and proceed as follows: material pulling and clamping; chuck release; Y-axis positioning to the end point of material pulling; chuck clamping; material pulling and clamping release;

[0088] S7: The auxiliary clamping release and X / Y axis positioning are activated simultaneously, which can be understood as the trigger condition being "the end of the material pulling action";

[0089] S7.1: When the auxiliary clamp opens to the circumcircle of the tube, it will trigger the movement of the B-axis at the machining start point. Similar to S1.1, the B-axis movement implemented here requires the host computer software to be able to control the B-axis in parallel with other axes (X / Y / Z), including the auxiliary clamp movement. To obtain the circumcircle position, the auxiliary clamp should monitor the current position in real time. Furthermore, the method for obtaining the circumcircle position is the same as in S1.1.

[0090] S7.2: When the B-axis is at a certain position from the endpoint, the Z-axis will be triggered to move downwards. This "certain position" means that the Z-axis's descent does not need to wait for the B-axis to fully reach its position. When the B-axis is at a certain position from the endpoint, the B-axis and Z-axis will move simultaneously, allowing the Z-axis to reach its position in a shorter time after the B-axis does. Similar to S1.1, to determine whether the B-axis has reached the set position, its current position should be monitored in real time.

[0091] It is important to note that:

[0092] 1. The above step S1 involves parallel control. To ensure control timing, unlike existing technologies, this technical solution requires that all X / Y / Z / B axes be in position before proceeding to S2. Similarly, S7 requires that all X / Y / Z / B axes be in position before proceeding to the subsequent cutting action.

[0093] 2. At the beginning of the material pulling stage, the auxiliary clamping is not released at the same time as the Z-axis is raised. This is because after the auxiliary clamping is released, the tube may bounce upward and touch the laser head.

[0094] 3. For the certain distance set in step S7.2, the host computer software can calculate the specific position where the Z-axis will trigger the Z-axis movement based on the downward following speed of the Z-axis, the distance to be descended, and the angle to be rotated of the B-axis. Alternatively, the user can specify the position directly in the host computer based on empirical values.

[0095] 4. This technical solution can also be applied to the material pulling process without a rotating axis or without B-axis rotation, that is, steps S1.2 and S7.1 are omitted, and the triggering condition of S7.2 is changed to the auxiliary clamp opening to the circumcircle.

[0096] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0097] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution device.

[0098] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0099] The storage media mentioned above can be read-only memory, disk, or optical disk, etc.

[0100] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0101] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0102] The present invention employs a processing method in the laser processing CNC system to improve the efficiency of material pulling linkage. By linking each axis at the beginning and end of the material pulling process, the material pulling efficiency can be effectively improved. In addition, clear triggering conditions (such as reaching the circumscribed circle position) are set in the linkage process to ensure the timing of the linkage, thereby ensuring the accuracy of the material pulling process.

[0103] In this specification, the invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations can be made without departing from the spirit and scope of the invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive.

Claims

1. A method for improving the efficiency of material pulling linkage in a laser processing CNC system, characterized in that, The method includes the following steps: (1) The material pulling process begins after the host computer software obtains the action conditions that trigger the material pulling process; (2) After the X-axis, Y-axis, Z-axis and B-axis of the processing machine tool are all set in place, clamp the auxiliary clamp onto the tube. (3) Loosen the chuck of the machine tool and position the Y-axis at the end point of the material pulling; (4) Clamp the chuck and release the material clamp; (5) Release the auxiliary clamp and simultaneously position it to the processing start point along the X-axis and Y-axis to end the material pulling action; The specific conditions for triggering the material pulling process are as follows: The Z-axis is raised to the corresponding pipe's stopping position and simultaneously positioned at the material pulling starting point along with the X-axis and Y-axis. Step (1) specifically includes the following steps: (1.1) During the process of raising the Z-axis, when the Z-axis is raised to the position of the outer circle of the pipe, the auxiliary clamping begins to loosen; (1.2) During the process of releasing the auxiliary clamp, when the auxiliary clamp opens to the position of the outer circle of the tube, the B axis moves to the starting point of the material pulling.

2. The processing method for improving the material pulling linkage efficiency in the laser processing CNC system according to claim 1, characterized in that, During the process of obtaining the position of the outer circle of the pipe, the auxiliary clamp needs to monitor its current position in real time.

3. The processing method for improving the material pulling linkage efficiency in the laser processing CNC system according to claim 1, characterized in that, The position of the circumscribed circle is calculated by the host computer software based on the cross-sectional shape of the pipe, or determined by the user specifying the required elevation position of the Z-axis.

4. The processing method for improving the material pulling linkage efficiency in the laser processing CNC system according to claim 1, characterized in that, Step (5) specifically includes the following steps: (5.1) During the process of releasing the auxiliary clamp, when the auxiliary clamp opens to the position of the outer circle of the tube, the B axis begins to move to the processing start point; (5.2) During the process of B-axis moving to the machining start point, when B-axis is far from the preset position of the end point, Z-axis begins to descend to the machining position.

5. The processing method for improving the material pulling linkage efficiency in the laser processing CNC system according to claim 4, characterized in that, The preset position is specifically: The host computer software calculates the distance required for the B-axis to trigger the Z-axis movement based on the downward speed of the Z-axis, the distance it descends, and the angle that the B-axis needs to rotate.

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