A precise laser pipe cutting device and a debugging method thereof

Abstract

The application discloses a precise laser pipe cutting device and a debugging method thereof, and relates to the technical field of laser cutting. The device comprises a laser cutting assembly, a main clamp rotary assembly, a secondary clamp floating support assembly and a CCD deviation rectifying assembly. The laser cutting assembly is used for providing a cutting laser beam above a to-be-cut special-shaped pipe and making the cutting laser beam irradiate a cutting position of the to-be-cut special-shaped pipe along a first direction. The main clamp rotary assembly is used for clamping and fixing a first end of the to-be-cut special-shaped pipe and driving the to-be-cut special-shaped pipe to rotate axially. The secondary clamp floating support assembly is used for floatingly and limitingly supporting a second end of the to-be-cut special-shaped pipe. The CCD deviation rectifying assembly is used for acquiring a real-time end face image of the second end of the to-be-cut special-shaped pipe and adjusting the rotating speed of the axial rotation and the exit position of the cutting laser beam in real time according to the real-time end face image. The support platform comprises a support plane used for supporting and fixing the laser cutting assembly, the main clamp rotary assembly, the secondary clamp floating support assembly and the CCD deviation rectifying assembly. The technical scheme can meet the special-shaped pipe cutting precision requirement of 3C industries.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting, in particular to a precise laser pipe cutting device and a debugging method thereof. BACKGROUND

[0002] With the release of tablet computer handwriting pen, its excellent writing and drawing function has shocked countless users, and also inspired the research and imitation of related manufacturers on this simple appearance and powerful touch pen. Among them, the application of the middle skeleton of the special-shaped metal pipe segment has been learned and referred by many enterprises. Generally speaking, after the special-shaped metal pipe is integrally formed, laser cutting is needed to obtain the special-shaped metal pipe segment with a specific length applied in the tablet computer handwriting pen. The existing laser pipe cutting device mainly clamps one end of the pipe by a clamping and rotating mechanism to make the pipe rotate at a uniform speed under the cutting laser beam, thereby realizing the laser cutting operation of the pipe. However, it is found in actual use that this cutting method only has good cutting precision in the cutting of round pipes, and for the cutting of special-shaped pipes such as D-shaped pipes, it can only meet the cutting needs of the hardware industry with low product size precision and end face process requirements, and cannot meet the cutting precision needs of the 3C industry with higher product size precision and end face process requirements. SUMMARY

[0003] Embodiments of the present application provide a precise laser pipe cutting device and a debugging method thereof, aiming to solve the technical problem that the existing laser pipe cutting device cannot meet the cutting precision needs of the 3C industry.

[0004] To this end, a precise laser pipe cutting device is provided in the first aspect of the present application, which is applied to the cutting operation of special-shaped pipes, and includes a laser cutting assembly, a main clamp clamping and rotating assembly, a secondary clamp floating support assembly, a CCD deviation rectifying assembly and a support platform; wherein,

[0005] The laser cutting assembly is configured to provide a cutting laser beam above a special-shaped pipe to be cut, and make the cutting laser beam irradiate a cutting position of the special-shaped pipe to be cut along a first direction;

[0006] The main clamp clamping and rotating assembly is configured to clamp and fix a first end of the special-shaped pipe to be cut, and drive the special-shaped pipe to be cut to rotate axially;

[0007] The secondary clamp floating support assembly is configured to floatingly and limitingly support a second end of the special-shaped pipe to be cut, so as to ensure the parallelism of the special-shaped pipe to be cut in a second direction and reduce the round runout deviation of the special-shaped pipe to be cut when rotating axially, the second direction being perpendicular to the first direction;

[0008] The CCD deviation correction assembly is configured to acquire a real-time end face image of the second end of the profiled pipe to be cut, and to adjust the rotation speed of the axial rotation and the exit position of the cutting laser beam in real time according to the real-time end face image.

[0009] The support platform comprises a support plane arranged in parallel with the second direction, and the support plane is configured to support and fix the laser cutting assembly, the main clamp rotary assembly, the secondary clamp floating support assembly, and the CCD deviation correction assembly.

[0010] Optionally, in some embodiments, the main clamp rotary assembly comprises a hollow air clamp configured to clamp and fix the first end of the profiled pipe to be cut through elastic deformation, a direct-connection torque motor configured to drive the hollow air clamp to rotate at a rotation speed adjusted by the CCD deviation correction assembly, an inner lining copper strip configured to protect the profiled pipe to be cut, and a telescopic air cylinder configured to drive the inner lining copper strip to perform telescopic movement in the first direction, and an end of the inner lining copper strip away from the telescopic air cylinder is inserted into the profiled pipe to be cut.

[0011] Optionally, in some embodiments, the secondary clamp floating support assembly comprises a secondary clamp sliding table and a sliding table power air cylinder configured to drive the secondary clamp sliding table to slide back and forth in the first direction, and at least one floating limiting support member is arranged on the secondary clamp sliding table to floatingly and limitingly support the second end of the profiled pipe to be cut.

[0012] Optionally, in some embodiments, the floating limiting support member comprises a floating support block with a support limiting hole, a first adjusting mechanism configured to drive the floating support block to move along the second direction, and a second adjusting mechanism configured to drive the floating support block to move along a third direction, and the third direction is perpendicular to the first direction and the second direction, respectively, and the second end of the profiled pipe to be cut is fixedly sleeved in the support limiting hole.

[0013] Optionally, in some embodiments, the laser cutting assembly comprises a laser head configured to emit the cutting laser beam, a cross-shaped linear motor platform configured to drive the laser head to move back and forth in the first direction and the third direction, respectively, a power mechanism configured to drive the laser head to move back and forth in the second direction, and a first CCD camera configured to identify the cutting position of the profiled pipe to be cut, and the first CCD camera is arranged adjacent to the laser head and moves synchronously with the laser head.

[0014] In addition, the second aspect embodiment of the present application provides a debugging method of a precise laser pipe cutting device, which is applied to the precise laser cutting device described above, and the debugging method comprises the following steps:

[0015] A sample is provided, the size of which is the same as that of the shaped tube to be cut. The first end of the sample is clamped and fixed by the main clamping and rotating assembly, and the second end of the sample is floating and limited by the sub-clamping floating support assembly.

[0016] Based on the target length of the target product, the initial distance of the laser head of the laser cutting assembly moving in the second direction is set so that, under the control of the initial distance, the cutting laser beam emitted by the laser head cuts the sample in a preset manner to obtain a cut sample;

[0017] The length of the cut sample is repeatedly measured using a two-dimensional measuring instrument to obtain the average length deviation between the cut sample and the target product, and the initial distance is corrected based on the average length deviation.

[0018] Optionally, in some embodiments, the sub-card floating support assembly uses a single-point support method to float and limit the second end of the sample, and the preset method is a single-head cutting method;

[0019] The step of setting an initial distance for the laser head of the laser cutting assembly to move in the second direction according to the target length of the target product, so that the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance, to obtain the cut sample includes:

[0020] The initial distance is set as the difference between the target length of the target product and the clamping length of the sample by the main card clamping rotary assembly;

[0021] The clamping end face of the main card clamping rotary assembly is set as the starting position of the laser head, and after the laser head moves the initial distance from the starting position to the sub-card floating support assembly along the second direction, the first cutting position is found;

[0022] The cutting laser beam emitted by the laser head cuts the sample at the first cutting position to obtain the cut sample.

[0023] Optionally, in some embodiments, the sub-card floating support assembly uses a two-point support method to float and limit the second end of the sample, and the preset method is a double-head cutting method;

[0024] The step of setting an initial distance for the laser head of the laser cutting assembly to move in the second direction according to the target length of the target product, so that the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance, to obtain the cut sample includes:

[0025] Set the target length of the target product as the initial distance;

[0026] Setting an arbitrary point on the sample as a second cutting position, and finding a third cutting position after the laser head moves the initial distance from the second cutting position to the main card clamping rotary assembly in the second direction;

[0027] Cutting the sample at the second cutting position and the third cutting position by the cutting laser beam emitted by the laser head to obtain the cut sample.

[0028] Optionally, in some embodiments, before the step of setting the initial distance of the laser head of the laser cutting assembly moving in the second direction according to the target length of the target product, so that the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance to obtain the cut sample, the following step is further included:

[0029] Obtaining an end face image of the second end of the sample by the CCD deviation correction assembly, and adjusting the support position of the second end of the sample by the sub-card floating support assembly according to the end face image to ensure the parallelism of the sample in the second direction.

[0030] Optionally, in some embodiments, after the step of obtaining an end face image of the second end of the sample by the CCD deviation correction assembly, and adjusting the support position of the second end of the sample by the sub-card floating support assembly according to the end face image to ensure the parallelism of the sample in the second direction, the following step is further included:

[0031] Driving the sample to rotate axially by the main card clamping rotary assembly, and observing the end face imaging of the second end of the sample by the CCD deviation correction assembly;

[0032] Obtaining the roundness deviation of the sample according to the pixel ratio offset of the end face imaging, and adjusting the clamping force of the first end of the sample by the main card clamping rotary assembly according to the roundness deviation to ensure that the roundness deviation is within a preset tolerance range.

[0033] The precision laser tube cutting device and its debugging method provided in this application mainly consist of a laser cutting component, a main clamping and rotating component, a secondary clamping and floating support component, a CCD correction component, and a support platform. Specifically, the support platform provides a support plane parallel to the second direction to support and fix the laser cutting component, the main clamping and rotating component, the secondary clamping and floating support component, and the CCD correction component, thereby ensuring that each component is supported and fixed on the same reference horizontal plane, and ultimately ensuring the stable operation of each component of the laser tube cutting device to improve its cutting accuracy. Meanwhile, during the cutting of irregularly shaped tubes, this laser tube cutting device, on the one hand, clamps and fixes the first end of the irregularly shaped tube to be cut through the main clamping and rotating assembly, and drives the irregularly shaped tube to be cut to rotate axially; on the other hand, the secondary clamping floating support assembly floats and limits the support of the second end of the irregularly shaped tube to be cut. This allows the support position of the secondary clamping floating support assembly on the second end of the irregularly shaped tube to be cut to be adjusted, and after adjustment, the second end of the irregularly shaped tube to be cut can be limited and supported in that support position. This ensures the parallelism of the irregularly shaped tube to be cut in the first direction and reduces the circular runout deviation of the irregularly shaped tube during axial rotation, thereby improving the cutting accuracy. Furthermore, during the cutting process, this laser tube cutting device also acquires a real-time end-face image of the second end of the irregularly shaped tube to be cut through a CCD correction assembly, and adjusts the rotational speed of the irregularly shaped tube and the emission position of the cutting laser beam in real time based on the real-time end-face image, ensuring the cutting effect of the cutting laser beam on the irregularly shaped tube to be cut, thereby further improving the cutting accuracy. It is evident that this technical solution can meet the precision requirements for cutting irregularly shaped tubes in the 3C industry. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the precision laser tube cutting device according to an embodiment of this application;

[0036] Figure 2 for Figure 1 A partial structural diagram of the precision laser tube cutting device shown. Figure 1 ;

[0037] Figure 3 for Figure 1 A partial structural diagram of the precision laser tube cutting device shown. Figure 2 ;

[0038] Figure 4 A side view structure schematic diagram of a special-shaped tube according to an embodiment of the present application;

[0039] Figure 5 A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application;

[0040] Figure 6 A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; Figure 5 A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application;

[0041] A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; Figure 7 A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; Figure 5 A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application;

[0042] A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; Figure 8 A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; Figure 5 A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application;

[0043] A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; Figure 9 A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application; A first flow chart of a debugging method of a precise laser pipe cutting device according to an embodiment of the present application;

[0044] Explanation of reference numerals: Explanation of reference numerals:

[0045] Explanation of reference numerals: Explanation of reference numerals: Explanation of reference numerals:

[0046] Explanation of reference numerals: Explanation of reference numerals: The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

[0047] DETAILED DESCRIPTION The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0048] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0049] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement condition and the like between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0050] In addition, the descriptions involving "first", "second", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the same, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope claimed by the present application.

[0051] In one embodiment, as shown in Figures 1 to 3 The present application provides a precise laser pipe cutting device 100, which is particularly applied to the cutting operation of profiled pipes. The precise laser pipe cutting device 100 can specifically include a laser cutting assembly 110, a main clamp holding and rotating assembly 120, a secondary clamp floating support assembly 130, and a CCD deviation rectifying assembly 140. The laser cutting assembly 110 is mainly used to provide a cutting laser beam above a profiled pipe 200 to be cut, and to make the cutting laser beam irradiate a cutting position of the profiled pipe 200 to be cut in a first direction. The main clamp holding and rotating assembly 120 is mainly used to clamp and fix a first end of the profiled pipe 200 to be cut, and to drive the profiled pipe 200 to be cut to rotate axially. The secondary clamp floating support assembly 130 is mainly used to floatingly and limitingly support a second end of the profiled pipe 200 to be cut, so as to ensure the parallelism of the profiled pipe 200 to be cut in a second direction and to reduce the round runout deviation of the profiled pipe 200 to be cut when rotating axially, the second direction being perpendicular to the first direction. The CCD deviation rectifying assembly 140 is mainly used to acquire a real-time end surface image of the second end of the profiled pipe 200 to be cut, and to adjust the rotating speed of the profiled pipe 200 to be cut to rotate axially and the exit position of the cutting laser beam in real time according to the real-time end surface image.

[0052] It can be understood that the first direction mentioned above can be the Z-axis direction as shown in Figure 1 The second direction mentioned above can be the Y-axis direction as shown in Figure 1The X-axis direction is shown in the figure. To better support and fix the components, the precision laser tube cutting device 100 of this application embodiment also includes a support platform 150. Specifically, the support platform 150 provides a support plane 151 arranged parallel to the second direction to support and fix the laser cutting component 110, the main clamping rotation component 120, the secondary clamping floating support component 130, and the CCD correction component 140. By ensuring that the support plane 151 is parallel to the second direction, it ensures that each component is supported and fixed on the same reference horizontal plane, thereby ensuring the stable operation of each component of the laser tube cutting device 100 and improving its cutting accuracy. At the same time, the support platform 150 can be supported on the horizontal plane by multiple anti-vibration feet to ensure that the support plane 151 is parallel to the second direction while achieving multi-point support to improve rigidity. The aforementioned laser cutting assembly 110 mainly emits a cutting laser beam through the laser head 111. Therefore, the exit position of the cutting laser beam mentioned above can be specifically considered as the position of the laser head 111. Furthermore, adjusting the exit position of the cutting laser beam mainly refers to adjusting the distance between the laser head 111 and the current cutting position in the first direction. Taking the irregularly shaped tube 200 to be cut as an example... Figure 4 Taking the D-shaped tube shown as an example, it has a flat section 210 and an arc section 220. When the cutting laser beam changes from cutting the arc section 220 to cutting the flat section 210, if the exit position of the cutting laser beam (i.e., the distance between the laser head 111 in the first direction and the current cutting position) is not adjusted in time, the distance from the exit position of the cutting laser beam to the current cutting position will become longer, affecting the cutting effect and cutting accuracy of the shaped tube to be cut. At the same time, if the rotation speed of the axial rotation of the shaped tube 200 to be cut is not adjusted in time during the adjustment of the exit position of the cutting laser beam, part of the flat section 210 may be cut during the adjustment of the exit position of the cutting laser beam. This not only affects the adjustment effect of the exit position of the cutting laser beam, but also affects the cutting effect and cutting accuracy of the shaped tube to be cut. Therefore, the aforementioned real-time adjustment of the rotational speed of the axial rotation of the tube to be cut 200 and the emission position of the cutting laser beam based on the real-time end face image can specifically be as follows: when the cutting laser beam changes from cutting the arc segment 220 to cutting the plane segment 210, not only is the rotational speed of the main clamping rotary assembly 120 driving the tube to be cut 200 to rotate axially reduced, but the laser head 111 is also driven to move closer to the current cutting position along the first direction, so as to ensure that the emission position of the cutting laser beam remains consistent with the current cutting position. This ensures the cutting effect of the cutting laser beam on the tube to be cut 200, thereby further improving its cutting accuracy on the tube to be cut 200.

[0053] In this way, the precise laser pipe cutting device 100 provided by the embodiment of the present application can, in the process of cutting the special-shaped pipe 200, on the one hand, clamp and fix the first end of the special-shaped pipe 200 to be cut through the main clamp holding and rotating assembly 120, and drive the special-shaped pipe 200 to be cut to rotate axially, and on the other hand, support and limit the second end of the special-shaped pipe 200 to be cut through the floating support assembly 130 of the secondary clamp, so that the floating support assembly 130 of the secondary clamp can adjust the support position of the second end of the special-shaped pipe 200 to be cut floatingly, and after the adjustment is completed, support and limit the second end of the special-shaped pipe 200 to be cut at the support position, so as to ensure the parallelism of the special-shaped pipe 200 to be cut in the first direction and reduce the round runout deviation of the special-shaped pipe 200 to be cut when rotating axially, thereby improving the cutting precision of the special-shaped pipe 200 to be cut. At the same time, in the process of cutting the special-shaped pipe 200, the real-time end face image of the second end of the special-shaped pipe 200 to be cut is obtained through the CCD correction assembly 140, and the rotating speed of the special-shaped pipe 200 to be cut and the exit position of the cutting laser beam are adjusted in real time according to the real-time end face image, so as to ensure the cutting effect of the cutting laser beam on the special-shaped pipe 200 to be cut, thereby further improving the cutting precision of the special-shaped pipe 200 to be cut. It can be seen that the technical solution can meet the cutting precision requirements of the special-shaped pipe in the 3C industry.

[0054] In some examples, as Figure 1 and Figure 2As shown, the main clamp holding and rotating assembly 120 can specifically include a hollow air clamp 121 for clamping and fixing the first end of the to-be-cut special-shaped pipe 200 by elastic deformation, and a direct-connection torque motor 122 for driving the hollow air clamp 121 to rotate at a rotating speed adjusted by the CCD deviation rectifying assembly 140. In this way, the clamping and fixing of the first end of the to-be-cut special-shaped pipe 200 can be well achieved by the hollow air clamp 121, and the clamping force of the hollow air clamp 121 on the first end of the to-be-cut special-shaped pipe 200 can be adjusted only by controlling the degree of elastic deformation, so that the control of the round run-out deviation of the to-be-cut special-shaped pipe 200 during the axial rotation of the to-be-cut special-shaped pipe 200 can be achieved, and the round run-out deviation can be further reduced. Meanwhile, the direct-connection torque motor 122 directly drives and controls the hollow air clamp 121 to drive the to-be-cut special-shaped pipe 200 to rotate axially, and the encoder closed-loop feedback setting can be achieved, so that the rotating speed control accuracy of the axial rotation can be further improved. Further, the main clamp holding and rotating assembly 120 further includes an inner copper lining 123 for cutting protection of the to-be-cut special-shaped pipe 200, and a telescopic cylinder 124 for driving the inner copper lining 123 to perform telescopic movement in the first direction, and one end of the inner copper lining 123 away from the telescopic cylinder 124 penetrates into the to-be-cut special-shaped pipe 200 from the first end of the to-be-cut special-shaped pipe 200. In this way, the inner copper lining 123 can be placed in the to-be-cut special-shaped pipe 200 during the laser cutting process of the to-be-cut special-shaped pipe 200, so as to provide good cutting protection for other cutting positions of the to-be-cut special-shaped pipe 200.

[0055] In some examples, as shown in Figure 1 and Figure 2 As shown, the main clamp holding and rotating assembly 120 further includes a main clamp mounting seat 125, the main clamp mounting seat 125 has a first mounting plate 1251 mounted in the first direction, and the direct-connection torque motor 122 is mounted on one side surface of the first mounting plate 1251. In this way, the first mounting plate 1251 can be mounted in the first direction, so that the direct-connection torque motor 122 is mounted on one side surface of the first mounting plate 1251, and when the direct-connection torque motor 122 is driven to connect the hollow air clamp 121, the hollow air clamp 121 has a clamping plane parallel to the first direction, thereby further ensuring the parallelism of the to-be-cut special-shaped pipe 200 clamped by the hollow air clamp 121 extending in the second direction. In addition, the main clamp holding and rotating assembly 120 further includes a counterweight (not shown), and the counterweight is mounted on the side surface of the first mounting plate 1251 away from the direct-connection torque motor 122. In this way, the counterweight and the direct-connection torque motor 122 are oppositely arranged on the two side surfaces of the first mounting plate 1251, so that the clamping plane of the hollow air clamp 121 can be ensured to be always arranged parallel to the first direction, thereby helping to further improve the cutting accuracy of the to-be-cut special-shaped pipe 200 by the precise laser cutting pipe device 100. In addition, in order to better achieve the mounting and fixing of the main clamp mounting seat 125 on the support plane 151, the main clamp mounting seat 125 further includes a second mounting plate 1252 mounted in the second direction.

[0056] In some examples, as shown in Figure 1 and Figure 2 The sub-card floating support assembly 130 includes a sub-card sliding table 131 and a sliding table power cylinder 132 driving the sub-card sliding table 131 to slide back and forth in the second direction, and at least one floating limiting support 133 is arranged on the sub-card sliding table 131 to floatingly and limitingly support the second end of the to-be-cut special-shaped pipe 200. In this way, the sub-card sliding table 131 and the at least one floating limiting support 133 can be driven by the sliding table power cylinder 132 to slide back and forth in the second direction, so that the support position of the at least one floating limiting support 133 on the second end of the to-be-cut special-shaped pipe 200 in the second direction is adjustable, thereby meeting the clamping and fixing requirements of the to-be-cut special-shaped pipe 200 of different lengths. At the same time, the actual number of floating limiting supports 133 can be adjusted according to the actual cutting mode of the to-be-cut special-shaped pipe 200. When the cutting mode of the to-be-cut special-shaped pipe 200 is a single-head cutting mode, only one floating limiting support 133 is generally needed to support the second end of the to-be-cut special-shaped pipe 200 at a single point. When the cutting mode of the to-be-cut special-shaped pipe 200 is a double-head cutting mode, at least two floating limiting supports 133 are generally needed to support the second end of the to-be-cut special-shaped pipe 200 at two points or multiple points.

[0057] In some examples, as shown in Figure 1 and Figure 2 The floating limiting support 133 can specifically include a floating support block 1331 with a support limiting hole, a first adjusting mechanism 1332 driving the floating support block 1331 to move in the second direction, and a second adjusting mechanism 1333 driving the floating support block to move in a third direction, the third direction being perpendicular to the first direction and the second direction, respectively, and the second end of the to-be-cut special-shaped pipe 200 is sleeved and fixed in the support limiting hole. It can be understood that the third direction mentioned above can be specifically Figure 1The first adjusting mechanism 1332 and the second adjusting mechanism 1333 are arranged to allow the floating support block 1331 to support the second end of the profiled pipe 200 to be cut to be adjustable in position in the first direction and the third direction, thereby ensuring the parallelism of the second end of the profiled pipe 200 to be cut in the second direction, and thereby ensuring the coaxiality of the second end of the profiled pipe 200 to be cut with the clamping center of the hollow air clamp 121. Meanwhile, the second end of the profiled pipe 200 to be cut is sleeved and fixed in the support limiting hole, which can limit the second end of the profiled pipe 200 to be cut to only rotate axially in a limited range in the support limiting hole, so as to prevent the second end of the profiled pipe 200 to be cut from radially deviating during axial rotation, thereby greatly reducing the roundness deviation of the profiled pipe 200 to be cut during axial rotation. In addition, in order to protect the contact between the second end of the profiled pipe 200 to be cut and the support limiting hole when the second end of the profiled pipe 200 to be cut is sleeved and fixed in the support limiting hole, the second end of the profiled pipe 200 to be cut can be specifically sleeved and fixed in the support limiting hole by a bearing 11.

[0058] In some examples, as shown in Figure 1 and Figure 2 The laser cutting assembly 110 can specifically include a laser head 111 for emitting a cutting laser beam, a cross linear motor platform 112 for driving the laser head 111 to move back and forth in the first direction and the third direction, and a power mechanism 113 for driving the laser head 111 to move back and forth in the second direction. In this way, the laser head 111 can be moved in any direction by the cross linear motor platform 112 and the power mechanism 113. Further, the laser cutting assembly 110 can specifically further include a first CCD camera 114 for identifying the cutting position of the profiled pipe 200 to be cut, which is arranged adjacent to the laser head 111 and moves synchronously with the laser head 111. In this way, the first CCD camera 114 can be arranged to accurately identify the cutting position of the profiled pipe 200 to be cut, so as to ensure that the cutting laser beam can irradiate the current cutting position in the first direction, thereby accurately cutting the cutting position, and further improving the cutting precision of the profiled pipe 200 to be cut by the precise pipe cutting device 100. In addition, the laser cutting assembly 110 can be provided with a blowing mechanism to blow and protect during laser cutting of the cutting position of the profiled pipe 200 to be cut.

[0059] In some examples, as shown in Figure 1 and Figure 3As shown, the CCD deviation correction assembly 140 can specifically include a second CCD camera 141 for acquiring a real-time end face image of the second end of the profiled pipe 200 to be cut, a camera protection cover plate 142 for active shielding protection of the second CCD camera 141, a rotary cylinder 143 for driving the camera protection cover plate 142 to rotate, and a controller electrically connected with the laser cutting assembly 110 and the main clamp holding and rotating assembly 120 respectively. In this way, through the arrangement of the second CCD camera 141, it can be ensured that the second CCD camera 141 can acquire a real-time end face image of the second end of the profiled pipe 200 to be cut in real time during the process of cutting the profiled pipe 200 to be cut by the laser, so as to facilitate the controller to adjust the rotating speed of the profiled pipe 200 to be cut for axial rotation and the exit position of the cutting laser beam in real time according to the real-time end face image, so as to ensure the cutting effect of the cutting laser beam on the profiled pipe 200 to be cut, and further improve the cutting precision of the profiled pipe 200 to be cut. In addition, the second CCD camera 141 can also be movably mounted on the CCD camera adjusting seat 144, so that the mounting position of the second CCD camera 141 is adjustable in the first direction.

[0060] In one embodiment, as shown in Figure 5 The embodiment of the present application also provides a debugging method of the precision laser pipe cutting device. The debugging method can be applied in the precision laser cutting device 100 of the above embodiment. The debugging method can specifically include the following steps:

[0061] Step S110: A sample is provided. The size of the sample is the same as that of the profiled pipe to be cut. The first end of the sample is clamped and fixed by the main clamp holding and rotating assembly, and the second end of the sample is floatingly and limitingly supported by the secondary clamp floating support assembly.

[0062] It can be understood that, in order to ensure that the precision laser cutting device 100 has high cutting precision on the profiled pipe 200 to be cut in the above embodiment, the precision laser cutting device 100 should be cut and debugged on some samples first. Specifically, a sample can be provided. The size of the sample is the same as that of the profiled pipe 200 to be cut. The first end of the sample is clamped and fixed by the main clamp holding and rotating assembly 120, and the second end of the sample is floatingly and limitingly supported by the secondary clamp floating support assembly 130, so as to ensure that the sample can be cut and debugged in the same clamped and fixed environment, and thus ensure that the precision laser cutting device 100 has high cutting precision on the profiled pipe 200 to be cut after the cutting and debugging of the sample is completed.

[0063] Step S120: According to the target length of the target product, set the initial distance of the laser head of the laser cutting assembly in the second direction, so that the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance, and obtains a cutting sample.

[0064] It can be understood that after the sample is clamped and fixed by the above method steps, the sample can be cut into a cutting sample with the same length as the target product. At this time, the specific process is as follows: according to the target length of the target product, set the initial distance of the laser head of the laser cutting assembly in the second direction, so that the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance, and obtains a cutting sample.

[0065] Step S130: repeatedly measure the length of the cutting sample by the two-dimensional measuring instrument, and obtain the average length deviation between the cutting sample and the target product, so as to correct the initial distance according to the average length deviation.

[0066] It can be understood that generally, when the initial distance is properly set, the length of the cutting sample obtained by cutting should be consistent with the target length of the target product, or the deviation should be less than a preset tolerance value, so as to ensure the length cutting precision of the precise laser pipe cutting device 100. However, in fact, since the initial distance set according to the target length of the target product is generally a theoretical value, if the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance, the actual length of the cutting sample obtained will be affected by the current cutting environment (such as the assembly error of the precise laser pipe cutting device 100), and there will be a certain deviation from the target length. Therefore, the initial distance needs to be compensated for a certain deviation to ensure the length cutting precision of the precise laser pipe cutting device 100. At this time, after a cutting sample is obtained by pre-cutting, the length of the cutting sample is repeatedly measured by the two-dimensional measuring instrument, and then the average length deviation between the cutting sample and the target product is obtained. Then, the initial distance is corrected according to the average length deviation, that is, the average length deviation is compensated on the initial distance, to obtain a new initial distance. Subsequently, the cutting laser beam emitted by the laser head can cut the cutting pipe 200 in a preset manner under the control of the new initial distance, and obtain the target product, thereby effectively ensuring the length cutting precision of the precise laser pipe cutting device 100 on the cutting pipe 200.

[0067] In addition, the process of correcting the initial distance by the debugging method can be performed multiple times according to the length cutting accuracy requirement of the actual target product, that is, the sample cutting debugging is continuously performed by the above method to obtain the corresponding cutting sample, and the initial distance is corrected multiple times to ensure that the cutting sample obtained by cutting the sample by the cutting laser beam emitted by the laser head under the control of the initial distance is consistent with the target length of the target product or has a deviation less than the preset tolerance value, thereby further improving the length cutting accuracy of the precision laser cutting device 100 on the to-be-cut special-shaped pipe 200.

[0068] Based on the above description of the embodiments, the cutting method of the precision laser cutting device 100 on the to-be-cut special-shaped pipe 200 can be a single-head cutting method or a double-head cutting method, and the secondary card floating support assembly will adopt different support methods to support the second end of the to-be-cut special-shaped pipe 200 for different cutting methods. Thus, in some examples, as shown in Figure 6 When the above preset method is a single-head cutting method, the secondary card floating support assembly 130 adopts a single-point support method to float and limit the second end of the sample. At this time, the specific process of the above method step "setting the initial distance of the movement of the laser head of the laser cutting assembly in the second direction according to the target length of the target product, so that the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance to obtain a cutting sample" is as follows:

[0069] Step S121: setting the difference between the target length of the target product and the clamping length of the sample by the primary card clamping and rotating assembly as the initial distance.

[0070] As can be understood, as shown in Figure 7 When the cutting method of the precision laser cutting device 100 on the to-be-cut special-shaped pipe 200 is a single-head cutting method, the target product needs to retain the clamping part of the first end of the to-be-cut special-shaped pipe 200 by the primary card clamping and rotating assembly 120. Thus, the difference between the target length C1 of the target product and the clamping length C2 of the sample by the primary card clamping and rotating assembly 120 can be set as the initial distance L1, that is, L1=C1-C2.

[0071] Step S122: setting the clamping end face of the primary card clamping and rotating assembly as the starting position of the laser head, and finding the first cutting position after the laser head moves the initial distance from the starting position to the secondary card floating support assembly in the second direction.

[0072] It can be understood that after the initial distance L1 is set through the above method steps, the clamping end surface of the main clamp holding and rotating assembly 120 can be set as the starting position A1 of the laser head 111, and after the laser head 111 moves from the starting position A1 to the secondary clamp floating support assembly 130 by the initial distance L1 in the second direction, the first cutting position A2 is found.

[0073] Step S123: The cutting sample is obtained by cutting the sample at the first cutting position by the cutting laser beam emitted by the laser head.

[0074] It can be understood that after the first cutting position A2 is found through the above method steps, the cutting sample is obtained by cutting the sample at the first cutting position A2 by the cutting laser beam emitted by the laser head 111. In the case of no deviation, the length of the cutting sample should be equal to L1+C2, i.e. equal to the target length C1. In fact, the length of the cutting sample will have the above-mentioned average length deviation, which is denoted by Δ, so at this time, the length of the cutting sample will be equal to L1+C2±Δ, and there is a difference Δ from the target length C1. Through the correction of the above method steps, i.e. compensating the initial distance L1 by the average length deviation Δ, a new initial distance L1′=L1±Δ is obtained, so that the length of the product obtained after subsequent cutting of the to-be-cut special-shaped pipe 200 is L1′+C2±Δ=L1±Δ+C2±Δ=L1+C2, i.e. equal to the target length C1, thereby effectively ensuring the fixed-length cutting precision of the to-be-cut special-shaped pipe 200 by the precision laser pipe cutting device 100.

[0075] In some examples, as shown in Figure 8 When the above preset mode is a double-end cutting mode, the secondary clamp floating support assembly 130 adopts a double-point support mode to floatingly support the second end of the sample, at this time, the specific process of the above method step "according to the target length of the target product, setting the initial distance of the laser head of the laser cutting assembly in the second direction, so that the cutting sample is obtained by the cutting laser beam emitted by the laser head at the initial distance according to the preset mode" is as follows:

[0076] Step S221: The target length of the target product is set as the initial distance.

[0077] It can be understood that, as shown in Figure 7 When the cutting mode of the precision laser cutting device 100 for the to-be-cut special-shaped pipe 200 is a double-end cutting mode, since the target product does not need to reserve the clamped part of the first end of the to-be-cut special-shaped pipe 200 by the main clamp holding and rotating assembly 120, the target length C1 of the target product can be directly set as the initial distance L2, i.e. L2=C1.

[0078] Step S222: On the side of the secondary card floating support assembly away from the main card clamping rotary assembly, set any point on the sample as the second cutting position, and after the laser head moves the initial distance from the second cutting position toward the main card clamping rotary assembly in the second direction, find the third cutting position.

[0079] It is understandable that after the initial distance L2 is set through the above method and steps, any point on the sample can be set as the second cutting position A3 on the side of the secondary card floating support component 130 away from the main card clamping rotary component 120. After the laser head 111 moves the initial distance L2 from the second cutting position A3 towards the main card clamping rotary component 120 in the second direction, the third cutting position A4 is found.

[0080] Step S223: The cutting laser beam emitted by the laser head cuts the sample sequentially at the second cutting position and the third cutting position to obtain the cut sample.

[0081] It is understandable that after finding the second cutting position A3 and the third cutting position A4 through the above-described steps, the cutting laser beam emitted by the laser head 111 can sequentially cut the sample at the second cutting position A3 and the third cutting position A4 to obtain the cut sample. Under the condition of no deviation, the length of the cut sample should be equal to L2, that is, equal to the target length C1. In reality, the length of the cut sample will have the above-described average length deviation, which is represented by Δ. Therefore, the actual length of the cut sample will be equal to L2±Δ, and has a difference of Δ from the target length C1. By correcting through the above-described steps, that is, by compensating the initial distance L2 with the average length deviation Δ, the new initial distance L2′=L2±Δ can be made. In this way, the length of the product obtained after cutting the irregular tube 200 is L2′±Δ=L2±Δ±Δ=L2, that is, equal to the target length C1, thereby effectively ensuring the fixed-length cutting accuracy of the irregular tube 200 by the precision laser tube cutting device 100.

[0082] In some examples, such as Figure 9 As shown, before performing the above method step "based on the target length of the target product, setting the initial distance for the laser head of the laser cutting assembly to move in the second direction, so that under the control of the initial distance, the cutting laser beam emitted by the laser head cuts the sample in a preset manner to obtain the cut sample", the following steps are also included:

[0083] Step S141: Obtain an end face image of the second end of the sample using the CCD correction component, and adjust the support position of the sub-card floating support component on the second end of the sample according to the end face image to ensure the parallelism of the sample in the second direction.

[0084] It can be understood that, before cutting the sample, to ensure the cutting accuracy of the sample, it also needs to ensure the parallelism of the sample in the second direction. At this time, the end face image of the second end of the sample can be obtained by the CCD correction component 140, and then the support position of the secondary card floating support component 140 for the second end of the sample is adjusted according to the end face image, so as to ensure the parallelism of the sample in the second direction.

[0085] Based on the above description, it can be understood that the secondary card floating support component 140 mainly supports the second end of the sample through the floating support block 1331. The floating support block 1331 can be adjusted in position in the first direction and the third direction through the first adjusting mechanism 1332 and the second adjusting mechanism 1333 mentioned in the above embodiment, so as to realize the adjustable support position of the second end of the sample. At this time, the specific process of the method step "adjusting the support position of the secondary card floating support component for the second end of the sample according to the end face image" can be that the distance by which the second end of the current sample deviates from the clamping center of the hollow air clamp 121 in the first direction and the third direction is found out according to the end face image, and then the corresponding direction is adjusted through the first adjusting mechanism 1332 and the second adjusting mechanism 1333, so as to ensure the parallelism of the second end of the sample in the second direction, and further ensure the coaxiality with the clamping center of the hollow air clamp 121.

[0086] Step S142: driving the sample to rotate axially by the main card clamping rotation component, and observing the end face imaging of the second end of the sample by the CCD correction component.

[0087] It can be understood that, before cutting the sample, to ensure the cutting accuracy of the sample, in addition to ensuring the parallelism of the sample in the second direction, it also needs to further ensure that the round runout deviation of the sample when rotating axially is within a preset tolerance range. At this time, the round runout deviation of the sample needs to be detected, that is, the sample is driven to rotate axially by the main card clamping rotation component 120, and the end face imaging of the second end of the sample is observed by the CCD correction component 140.

[0088] Step S143: obtaining the round runout deviation of the sample according to the pixel ratio offset of the end face imaging, and adjusting the clamping force of the main card clamping rotation component for the first end of the sample according to the round runout deviation, so as to ensure that the round runout deviation is within a preset tolerance range.

[0089] It can be understood that after the end face of the second end of the sample is imaged by the above method steps, the roundness deviation of the sample can be obtained according to the pixel offset of the end face imaging (i.e. the offset degree of the center of the pixel of the end face imaging and the clamping center of the hollow air clamp 121), and the clamping force of the main clamp clamping and rotating assembly 120 on the first end of the sample is adjusted according to the roundness deviation, so as to ensure that the roundness deviation is within the preset tolerance range, that is, when the roundness deviation exceeds the preset tolerance range, the clamping force of the main clamp clamping and rotating assembly 200 on the first end of the sample is changed to gradually reduce the roundness deviation, and finally ensure that the roundness deviation is within the preset tolerance range.

[0090] In this way, by the method steps in the present example, not only the parallelism of the sample in the second direction can be ensured, but also the roundness deviation of the sample when it is axially rotated can be ensured within the preset tolerance range, thereby further improving the length cutting precision of the sample by the precise laser pipe cutting device 100.

[0091] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or direct / indirect application in other related technical fields within the inventive concept of the present application, using the content of the present application specification and drawings, are all included in the patent protection scope of the present application.

Claims

1. A precision laser tube cutting device, used for cutting irregularly shaped tubes, characterized in that, This includes a laser cutting assembly, a main card clamping and rotating assembly, a secondary card floating support assembly, a CCD correction assembly, and a support platform; among which, The laser cutting assembly is used to provide a cutting laser beam above the shaped tube to be cut, and to make the cutting laser beam irradiate the cutting position of the shaped tube to be cut along a first direction. The main clamping and rotating assembly is used to clamp and fix the first end of the shaped tube to be cut, and drive the shaped tube to be cut to rotate axially. The sub-card floating support assembly is used to float and limit the support of the second end of the shaped tube to be cut, so as to ensure the parallelism of the shaped tube to be cut in the second direction and reduce the circular runout deviation of the shaped tube to be cut when rotating in the axial direction. The first direction is the Z-axis direction, the second direction is the X-axis direction, and the second direction is perpendicular to the first direction. The CCD correction component is used to acquire a real-time end face image of the second end of the shaped tube to be cut, and to adjust the rotational speed of the axial rotation and the emission position of the cutting laser beam in real time according to the real-time end face image. The support platform includes a support plane arranged parallel to the second direction. The support plane is used to support and fix the laser cutting component, the main card clamping and rotating component, the secondary card floating support component, and the CCD correction component. The sub-card floating support assembly includes a sub-card slide and a slide power cylinder that drives the sub-card slide to slide back and forth in the second direction. At least one floating limit support is installed on the sub-card slide to float and limit the second end of the shaped tube to be cut. The floating limiting support includes a floating support block with a supporting limiting hole, a first adjusting mechanism for driving the floating support block to move along the first direction, and a second adjusting mechanism for driving the floating support block to move along a third direction, the third direction being perpendicular to the first direction and the second direction respectively, and the second end of the shaped tube to be cut is sleeved and fixed in the supporting limiting hole.

2. The precision laser tube cutting device as described in claim 1, characterized in that, The main clamping and rotating assembly includes an air clamp for clamping and fixing the first end of the shaped tube to be cut by elastic deformation, a direct-drive torque motor for driving the air clamp to rotate at a speed adjusted by the CCD correction assembly, an inner copper strip for cutting protection of the shaped tube to be cut, and a telescopic cylinder for driving the inner copper strip to move in a telescopic motion in the second direction. The end of the inner copper strip away from the telescopic cylinder passes through the first end of the shaped tube to be cut.

3. The precision laser tube cutting apparatus as described in any one of claims 1-2, characterized in that, The laser cutting assembly includes a laser head for emitting the cutting laser beam, a cross-shaped linear motor platform for driving the laser head to move back and forth in the second direction and the third direction respectively, a power mechanism for driving the laser head to move back and forth in the first direction, and a first CCD camera for identifying the cutting position of the shaped tube to be cut. The first CCD camera is disposed adjacent to the laser head and moves synchronously with the laser head.

4. A debugging method for a precision laser tube cutting device, characterized in that, In the precision laser tube cutting device as described in any one of claims 1-3, the debugging method includes the following steps: A sample is provided, the size of which is the same as that of the shaped tube to be cut. The first end of the sample is clamped and fixed by the main clamping and rotating assembly, and the second end of the sample is floating and limited by the sub-clamping floating support assembly. Based on the target length of the target product, the initial distance that the laser head of the laser cutting assembly moves in the first direction is set so that, under the control of the initial distance, the cutting laser beam emitted by the laser head cuts the sample in a preset manner to obtain a cut sample; The length of the cut sample is repeatedly measured using a two-dimensional measuring instrument to obtain the average length deviation between the cut sample and the target product, and the initial distance is corrected based on the average length deviation.

5. The debugging method of the precision laser tube cutting device as described in claim 4, characterized in that, The sub-card floating support component uses a single-point support method to float and limit the second end of the sample, and the preset method is a single-head cutting method; The step of setting an initial distance for the laser head of the laser cutting assembly to move in the first direction according to the target length of the target product, so that the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance, to obtain the cut sample includes: The initial distance is set as the difference between the target length of the target product and the clamping length of the sample by the main card clamping rotary assembly. The clamping end face of the main card clamping rotary assembly is set as the starting position of the laser head, and after the laser head moves the initial distance from the starting position to the sub-card floating support assembly along the second direction, the first cutting position is found; The cutting laser beam emitted by the laser head cuts the sample at the first cutting position to obtain the cut sample.

6. The debugging method of the precision laser tube cutting device as described in claim 4, characterized in that, The sub-card floating support assembly uses a dual-point support method to float and limit the second end of the sample, and the preset method is a double-head cutting method; The step of setting an initial distance for the laser head of the laser cutting assembly to move in the second direction according to the target length of the target product, so that the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance, to obtain the cut sample includes: Set the target length of the target product as the initial distance; On the side of the sub-card floating support assembly away from the main card clamping rotary assembly, any point on the sample is set as the second cutting position, and after the laser head moves the initial distance from the second cutting position toward the main card clamping rotary assembly along the second direction, a third cutting position is found; The cutting laser beam emitted by the laser head cuts the sample sequentially at the second cutting position and the third cutting position to obtain the cut sample.

7. The debugging method of the precision laser tube cutting device as described in any one of claims 4-6, characterized in that, Before the step of setting an initial distance for the laser head of the laser cutting assembly to move in the second direction according to the target length of the target product, so that the cutting laser beam emitted by the laser head cuts the sample in a preset manner under the control of the initial distance, the method further includes the following steps: The CCD correction component acquires an end face image of the second end of the sample, and adjusts the support position of the sub-card floating support component on the second end of the sample according to the end face image to ensure the parallelism of the sample in the second direction.

8. The debugging method of the precision laser tube cutting device as described in claim 7, characterized in that, After the step of acquiring an end face image of the second end of the sample through the CCD correction component and adjusting the support position of the sub-card floating support component on the second end of the sample according to the end face image to ensure the parallelism of the sample in the second direction, the method further includes the following steps: The sample is driven to rotate axially by the main clamping and rotating assembly, and the end face imaging of the second end of the sample is observed by the CCD correction assembly. The circular runout deviation of the sample is obtained based on the pixel ratio offset of the end face imaging, and the clamping force of the main card clamping rotation assembly on the first end of the sample is adjusted according to the circular runout deviation to ensure that the circular runout deviation is within the preset tolerance range.

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