Laser cutting device, replaceable laser assembly and control system and method

Abstract

The invention provides a laser cutting device, a replaceable laser assembly and a control system and method.The laser cutting device comprises a vertical base, a jig seat assembly is arranged on the vertical base, and a laser mechanism is arranged on the jig seat assembly; wherein the laser mechanism comprises a moving mechanism and a laser fixing seat arranged on the moving mechanism, a three-dimensional scanner and a laser mounting assembly are arranged at the lower part of the laser fixing seat, and the laser mounting assembly is used for mounting different replaceable laser assemblies; a driving mechanism for driving the laser mounting assembly to rotate is arranged on the laser fixing seat; the control system is connected to the three-dimensional scanner, the driving mechanism and the moving mechanism; compared with the prior art, a machining program does not need to be set for the workpiece, and the machining control program can be correspondingly constructed by constructing the three-dimensional model of the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting devices, and in particular to a laser cutting device, a replaceable laser component, and a control system and method. Background Art

[0002] Laser cutting device is a special equipment used for workpiece surface cutting, pipe groove cutting, etc. It has the characteristics of high precision and multi-degree-of-freedom rotation, and can complete the cutting process of any workpiece.

[0003] At present, the control program of the laser cutting device is set according to the product, that is, it can only process the set product. For other workpieces, it is necessary to re-set the program to process. Summary of the invention

[0004] In view of this, the main purpose of the present invention is to provide a laser cutting device, a replaceable laser component, and a control system and method.

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

[0006] In one aspect, the present invention provides a laser cutting device, comprising:

[0007] A vertical base, on which a fixture base assembly is arranged, and on which a laser mechanism is arranged;

[0008] The laser mechanism includes a moving mechanism, a laser fixing seat arranged on the moving mechanism, a three-dimensional scanner and a laser installation component are arranged at the lower part of the laser fixing seat, and the laser installation component is used to install different replaceable laser components;

[0009] A driving mechanism for driving the laser mounting assembly to rotate is arranged on the laser fixing seat;

[0010] A control system connected to the three-dimensional scanner, the driving mechanism and the moving mechanism;

[0011] The control system has:

[0012] A processing module connected to the three-dimensional scanner, the processing module is used to obtain the surface contour of the workpiece collected by the three-dimensional scanner, and construct a three-dimensional model of the workpiece according to the surface contour of the workpiece;

[0013] A configuration module, which sets a laser path for the workpiece based on a three-dimensional model of the workpiece, and correspondingly generates control instructions for controlling the laser to process the workpiece based on the laser path;

[0014] The control module controls the movement of the moving mechanism, the rotation of the end surface of the workpiece by the fixture seat assembly and at least two of the driving mechanisms based on the control instructions to control the laser to process the workpiece according to the set laser path.

[0015] Furthermore, setting the laser path of the workpiece based on the three-dimensional model of the workpiece specifically includes:

[0016] Identify the three-dimensional model of the workpiece to determine whether there is a preset feature. If there is a preset feature, the location of the preset feature is used as the reference point;

[0017] The three-dimensional model of the workpiece is divided into a plurality of sectors of equal angles by using the reference point, and the position of each sector is recorded; at least one of the sectors is obtained, and a plurality of symmetrical process lines are constructed along the two sides of the sector; the process lines of different heights are reversely taken as the first depth setting of laser cutting; at the same time, the distance between two adjacent process lines of different heights is used as the first cutting length of the laser, and at least one of the process lines is used as the starting point and the adjacent process line is used as the end point to set the first cutting path of the laser;

[0018] A number of end face reference lines perpendicular to the process lines are arranged along the end face of the sector, and the end face reference lines of different lengths are taken in reverse and used as the second depth setting of the laser cutting; at the same time, the distance between two adjacent process lines of different lengths is used as the second cutting length of the laser, and at least one of the end face reference lines is used as the starting point, and the adjacent end face reference lines are used as the end point to set the second cutting path of the laser.

[0019] Furthermore, the fixture seat assembly includes:

[0020] A jig plate, wherein a slide groove is provided at the bottom of the jig plate, and the slide groove is used to match and fix with a slide rail provided at the bottom of the jig plate;

[0021] A jig base is arranged on the upper part of the jig plate, mounting seats are arranged on both sides of the jig base, a jig fixing seat is arranged in the middle part of the jig base, a plurality of through holes are arranged on the jig fixing seat, and the jig fixing seat is used to fix the workpiece in the through holes based on the through holes, so as to achieve the purpose of fixing the workpiece;

[0022] A left fixing frame and a right fixing frame are respectively arranged on both sides of the jig plate, and a left bearing seat and a right bearing seat are respectively arranged in the left fixing frame and the right fixing frame; a left connecting shaft and a right connecting shaft are respectively arranged in the left bearing seat and the right bearing seat, wherein the left connecting shaft and the right connecting shaft are respectively fixed in the mounting seat;

[0023] Among them, a margin section is provided after the left connecting shaft passes through the left bearing seat to the left, and a first gear is provided on the margin section; a motor seat is provided on the mounting seat at one end of the left side, and a jig motor is provided on the motor seat, and a second gear is provided on the motor shaft of the jig motor, and the second gear is meshed with the first gear. The second gear is driven to rotate by the jig motor, and the second gear drives the first gear to rotate. The rotation of the first gear drives the left connecting shaft to rotate, and the rotation of the left connecting shaft drives the jig base to rotate to adjust the position of the workpiece.

[0024] Furthermore, the moving mechanism comprises:

[0025] A transverse base plate is arranged on the upper part of the vertical base, two parallel transverse slide rails are arranged on the transverse base plate, a transverse base is arranged on the upper part of the transverse slide rails, and a transverse slide groove matching the transverse slide rails is arranged on the lower part of the transverse base;

[0026] A mobile motor fixing seat is arranged in the middle part of the transverse substrate and at the upper edge of the transverse substrate, a mobile motor is arranged on the mobile motor fixing seat, a transverse driving wheel is arranged on the motor shaft of the mobile motor, a left driven wheel and a right driven wheel are arranged on both sides of the transverse slide rail at the upper end, a transverse measuring driven wheel is arranged in the middle of the transverse base, and a transverse angle sensor is embedded in the transverse measuring driven wheel;

[0027] The right end of the transverse transmission line is fixed on the right side end surface of the right side of the transverse base plate, passes through the transverse measurement driven wheel, the right driven wheel, the transverse driving wheel, the left driven wheel in sequence, passes through the transverse measurement driven wheel again, and is fixed on the left side end surface of the left side of the transverse base plate;

[0028] A longitudinal substrate for vertically moving the substrate is arranged on the transverse substrate, a longitudinal slide rail arranged in parallel is arranged on the longitudinal substrate, a longitudinal base is arranged on the longitudinal slide rail, and a longitudinal slide groove matching the longitudinal slide rail is arranged at the lower part of the longitudinal base;

[0029] A longitudinal motor seat is arranged on the right side of the longitudinal base plate, a longitudinal motor is arranged on the longitudinal motor seat, and a longitudinal driving wheel is arranged on the motor shaft of the longitudinal motor;

[0030] A front driven wheel and a rear driven wheel are arranged at the front and rear ends of the longitudinal slide rail on the right side, a longitudinal measuring driven wheel is arranged on the longitudinal base, and a longitudinal angle sensor is embedded in the longitudinal measuring driven wheel;

[0031] The front end of the longitudinal transmission line is fixed on the point side end face of the front side of the longitudinal substrate, and it passes through the longitudinal measurement driven wheel, the front driven wheel, the longitudinal driving wheel, the rear driven wheel in sequence, and then passes through the longitudinal measurement driven wheel again and is fixed on the rear side end face of the rear side of the longitudinal substrate.

[0032] The longitudinal base plates extend through the two sides of the longitudinal base, and a laser installation assembly is arranged at the lower part of the longitudinal base.

[0033] Further, the laser mounting assembly includes: a laser head seat;

[0034] A rotating bearing seat is embedded in the laser head seat, a rotating shaft is arranged in the rotating bearing seat, and a rotating shaft driven wheel is arranged above the rotating shaft;

[0035] A laser docking assembly is arranged below the rotating shaft and at the lower part of the laser head seat, and a three-dimensional scanner is arranged on one side of the laser docking assembly, wherein the three-dimensional scanner is arranged at the lower part of the laser head seat;

[0036] The laser docking assembly comprises a docking head seat, a laser assembly slot is formed in the docking head seat, wherein the laser assembly slot is substantially in an inverted V shape, and a buckle assembly is arranged at the opening position of the laser assembly slot;

[0037] The buckle assembly comprises: a clamping slot is arranged near the opening position of the laser assembly clamping slot, and a spring and a buckle are arranged in the clamping slot.

[0038] Furthermore, the driving mechanism comprises:

[0039] The drive motor mounting plate is fixed on one side of the laser head seat. A drive motor is arranged at the lower part of the drive motor mounting plate. The motor shaft of the drive motor passes through the drive motor mounting plate, and a drive wheel is arranged on the motor shaft. The drive wheel is connected to the driven wheel of the rotating shaft through a belt.

[0040] On the other hand, the present application provides a replaceable laser assembly, which is applied to the laser cutting device described above, and the replaceable laser assembly is used to be installed on the laser docking assembly;

[0041] Wherein, the replaceable laser assembly comprises:

[0042] The docking part includes a docking rod, a docking shell is arranged outside the docking rod, and a docking groove is formed between the docking shell and the docking rod.

[0043] A docking port is provided on the docking rod, wherein the docking head seat is installed in the docking groove, the laser component slot and the docking rod are matched and fixed, and the docking port is used for matching and installing with the buckle;

[0044] When the driving mechanism drives the driven wheel of the rotating shaft to rotate, the driven wheel of the rotating shaft drives the rotating shaft to rotate, and the rotating shaft drives the docking rod to rotate through the laser docking assembly.

[0045] Further, the lower portion of the docking rod is used to connect with the laser;

[0046] Or connect with the laser through a right angle mechanism to form a right angle laser;

[0047] Wherein, the right-angle mechanism includes: a first connecting sleeve is arranged on the docking rod, the docking rod is connected to the first bevel gear through the first connecting sleeve, and the first bevel gear is meshed with the second bevel gear;

[0048] The second bevel gear is installed in a second connecting sleeve, and the second connecting sleeve is connected to the laser.

[0049] On the other hand, the present application also provides a control system, comprising:

[0050] A processing module connected to the three-dimensional scanner, the processing module is used to obtain the surface contour of the workpiece collected by the three-dimensional scanner, and construct a three-dimensional model of the workpiece according to the surface contour of the workpiece;

[0051] A configuration module, which sets a laser path for the workpiece based on a three-dimensional model of the workpiece, and correspondingly generates control instructions for controlling the laser to process the workpiece based on the laser path;

[0052] A control module, based on the control instruction, controls the movement of the moving mechanism, the rotation of the end surface of the workpiece by the fixture seat assembly, and at least two of the driving mechanisms to control the laser to process the workpiece according to a set laser path;

[0053] The laser path of the workpiece is set based on the three-dimensional model of the workpiece, specifically including:

[0054] Identify the three-dimensional model of the workpiece to determine whether there is a preset feature. If there is a preset feature, the location of the preset feature is used as the reference point;

[0055] The three-dimensional model of the workpiece is divided into a plurality of sectors of equal angles by using the reference point, and the position of each sector is recorded; at least one of the sectors is obtained, and a plurality of symmetrical process lines are constructed along the two sides of the sector; the process lines of different heights are reversely taken as the first depth setting of laser cutting; at the same time, the distance between two adjacent process lines of different heights is used as the first cutting length of the laser, and at least one of the process lines is used as the starting point and the adjacent process line is used as the end point to set the first cutting path of the laser;

[0056] A number of end face reference lines perpendicular to the process lines are arranged along the end face of the sector, and the end face reference lines of different lengths are taken in reverse and used as the second depth setting of the laser cutting; at the same time, the distance between two adjacent process lines of different lengths is used as the second cutting length of the laser, and at least one of the end face reference lines is used as the starting point, and the adjacent end face reference lines are used as the end point to set the second cutting path of the laser.

[0057] On the other hand, the present application also provides a control method, which is applied to the control system, comprising the following steps:

[0058] Obtain the control instructions issued by the control system, and decompose the control instructions into a number of instruction units corresponding to the sector positions, each instruction unit forming an instruction set for controlling the laser to process the workpiece according to the set laser path;

[0059] Wherein, the instruction set includes at least an instruction for controlling the movement of the moving mechanism to change the moving path of the laser;

[0060] Instructions for controlling the drive mechanism to control the laser motion; and

[0061] The fixture seat assembly is controlled to rotate the end face of the workpiece to implement instructions for adjusting the position of the workpiece.

[0062] The present application obtains the three-dimensional contour of the workpiece through a three-dimensional scanner, and constructs a three-dimensional model through the three-dimensional contour. The three-dimensional model of the workpiece is identified to determine whether there is a preset feature. If there is a preset feature, the three-dimensional model of the workpiece is divided into multiple equal-angle sectors with the location of the preset feature as the reference point, and a process line and an end face reference line are constructed on each sector to determine the laser cutting depth and cutting path, and then the formation control instruction corresponding to the laser cutting depth and cutting path is output, thereby controlling the movement of the moving mechanism, the end face rotation of the fixture seat assembly to the workpiece, and at least two of the driving mechanisms to control the laser to process the workpiece according to the set laser path. Compared with traditional technology, the present application does not need to set a processing program for the workpiece, and it can construct a corresponding processing control program by constructing a three-dimensional model of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The following drawings are only used to illustrate and explain the present invention, and are not used to limit the scope of the present invention, wherein:

[0064] Figure 1 It is a schematic diagram of the left three-dimensional structure of the laser cutting device of the present invention;

[0065] Figure 2 It is a top view of the stereoscopic structure of the laser cutting device of the present invention;

[0066] Figure 3 It is a structural schematic diagram of the fixture seat assembly of the present invention;

[0067] Figure 4 It is a structural schematic diagram of the moving mechanism part of the present invention;

[0068] Figure 5 It is a schematic diagram of the front three-dimensional structure of the laser cutting device of the present invention;

[0069] Figure 6 It is a structural schematic diagram of the driving mechanism part of the present invention;

[0070] Figure 7 It is a structural schematic diagram of the docking installation component part of the present invention;

[0071] Figure 8 It is a schematic diagram of the structure of the replaceable laser assembly of the present invention;

[0072] Fig. 9 This is a schematic diagram of the internal structure of the replaceable laser assembly of the present invention;

[0073] Fig.10 This is a layout diagram of the transverse transmission line of the present invention. DETAILED DESCRIPTION

[0074] In order to make the purpose, technical solution, design method and advantages of the present invention clearer, the present invention is further described in detail by specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0075] Example 1

[0076] Reference Figures 1 to 7 In one aspect, the present invention provides a laser cutting device, comprising:

[0077] A vertical base 1 is provided with an inclined surface inside the vertical base 1, and the inclined surface serves as an operating table for carrying a laser cutting device; an upper cover 4 is provided on the upper part of the vertical base 1, and a collecting tank 10 is provided on the lower part thereof; wherein the upper cover 4 is of a flip type, and can be freely opened and merged. When the milling machine processes a workpiece, the upper cover 4 is merged, and the debris generated by the milling machine processing will not be splashed around due to the existence of the upper cover 4, and the debris falls into the collecting tank 10 from the inclined surface;

[0078] A jig seat assembly is arranged on the upper part of the inclined surface, and a laser mechanism is arranged on the jig seat assembly;

[0079] The laser mechanism includes a moving mechanism 3, a laser fixing seat 6 arranged on the moving mechanism, a three-dimensional scanner 8 and a laser mounting assembly 9 are arranged at the lower part of the laser fixing seat 6, and the laser mounting assembly 9 is used to install different replaceable laser assemblies;

[0080] A driving mechanism 7 for driving the laser mounting assembly to rotate is arranged on the laser fixing seat 6;

[0081] A control system connected to the three-dimensional scanner 8, the driving mechanism 7 and the moving mechanism 3;

[0082] The control system has:

[0083] A processing module, connected to the three-dimensional scanner 8, the processing module is used to obtain the surface contour of the workpiece collected by the three-dimensional scanner 8, and construct a three-dimensional model of the workpiece according to the surface contour of the workpiece;

[0084] The configuration module sets the laser path of the workpiece based on the three-dimensional model of the workpiece, and forms a control instruction for controlling the laser to process the workpiece based on the laser path; specifically, setting the laser path of the workpiece based on the three-dimensional model of the workpiece includes:

[0085] Identify the three-dimensional model of the workpiece to determine whether there is a preset feature. If there is a preset feature, the location of the preset feature is used as the reference point;

[0086] The three-dimensional model of the workpiece is divided into a plurality of sectors of equal angles by using the reference point, and the position of each sector is recorded; at least one of the sectors is obtained, and a plurality of symmetrical process lines are constructed along the two sides of the sector; the process lines of different heights are reversely taken as the first depth setting of laser cutting; at the same time, the distance between two adjacent process lines of different heights is used as the first cutting length of the laser, and at least one of the process lines is used as the starting point and the adjacent process line is used as the end point to set the first cutting path of the laser;

[0087] A number of end face reference lines perpendicular to the process lines are arranged along the end face of the sector, and the end face reference lines of different lengths are taken in reverse and used as the second depth setting of the laser cutting; at the same time, the distance between two adjacent process lines of different lengths is used as the second cutting length of the laser, and at least one of the end face reference lines is used as the starting point, and the adjacent end face reference lines are used as the end point to set the second cutting path of the laser.

[0088] A control module controls the movement of the moving mechanism, the rotation of the end face of the workpiece by the fixture seat assembly, and at least two of the driving mechanisms based on the control instructions to control the laser to process the workpiece according to the set laser path; specifically, the control instructions issued by the control system are obtained, and the control instructions are decomposed into a plurality of instruction units corresponding to the sector positions, and each instruction unit forms an instruction set for controlling the laser to process the workpiece according to the set laser path;

[0089] Wherein, the instruction set includes at least an instruction for controlling the movement of the moving mechanism to change the moving path of the laser;

[0090] Instructions for controlling the drive mechanism to control the laser motion; and

[0091] The fixture seat assembly is controlled to rotate the end face of the workpiece to implement instructions for adjusting the position of the workpiece.

[0092] In the above, the preset feature is a set recognition feature, such as the shape feature of the workpiece, a regular shape such as a circle or a square. If it is a regular shape, the center point of the three-dimensional model of the identified workpiece is used as the reference point, and the three-dimensional model of the workpiece is divided into a plurality of equal-angle sectors with the reference point as the core, and the features of each sector are the same; by inputting the processing parameters of the workpiece on the control panel (set on the side of the vertical base 1, not shown in the figure, a part of the control panel type control system, used to input the processing parameters during processing), the process line and the end face reference line are set according to the processing parameters of the workpiece and the three-dimensional model. Among them, the processing parameters include the processing parameters of the surface contour and the processing parameters of the end face, such as the parameters of grooving or hole opening or the cutting of the surface and end face. Specifically, the formed three-dimensional model can be displayed through the control panel, and the operator can set the position for grooving or hole opening based on the displayed three-dimensional model, and input the parameter information of grooving and hole opening, etc. It is also possible to build a standard library in which a large number of standard models of commonly used workpieces and corresponding processing parameters are established in advance. By comparing the 3D model in the standard library to obtain the same standard model, the corresponding processing program is called according to the processing parameters set in the standard model to perform processing.

[0093] In addition, the preset features can also be features that are easy to identify, such as grooves, holes or protrusions on the workpiece. These features can be used to perform laser cutting on the surface of the workpiece, and can also be used to cut the grooves, holes, etc.

[0094] The present application can also process irregularly shaped workpieces. Irregularly shaped workpieces generally do not have identification features. When there are no identification features, the irregularly shaped workpiece can first be segmented into several regular-shaped blocks through a three-dimensional model and a coordinate system, and then processed according to the identification features of the regular shapes; after processing, the blocks can be combined again according to the segmentation rules.

[0095] In the above, the configuration module has a configuration task management module and a configuration matrix; wherein the configuration task management module is used to configure the form of the configuration matrix according to the number of blocks and sectors;

[0096] When the workpiece is of regular shape, the configuration matrix has a plurality of configuration modules, each of which includes a process line configuration unit, an end face reference line configuration unit and a path planning unit;

[0097] Among them, the process line configuration unit is used to construct a number of symmetrical process lines along the two sides of the sector according to the set processing parameters and three-dimensional model; the process lines at different heights are reversed and used as the first depth setting for laser cutting; at the same time, the distance between two adjacent process lines at different heights is used as the first laser cutting length, such as 2mm surface cutting. For example, if the surface cutting is 2mm, the cube is taken as an example. If the cube is not a standard cube, when there is a certain error, if a uniform 2mm cut is performed, the cut workpiece still has this error. At this time, it is necessary to construct equivalent process lines on both sides according to the three-dimensional model of the workpiece, with the plane where the center point is located as the reference line (the cube is a regular shape, so the process line is an equivalent line), leaving a 2mm cutting area, and then the cutting parameter value can be obtained by reversing the equivalent process line. Some of these parameter values ​​are 2mm, some are less than 2mm, and some are greater than 2mm. When cutting according to these parameter values, a standard cube is obtained.

[0098] The corresponding path planning unit is used to set a first cutting path of the laser with one of the process lines as a starting point and an adjacent process line as an end point;

[0099] The end face reference line configuration unit is used to set a plurality of end face reference lines perpendicular to the process lines along the end face of the sector, and the end face reference lines of different lengths are reversely taken as the second depth setting of laser cutting; at the same time, the distance between two adjacent process lines of different lengths is used as the second laser cutting length;

[0100] The corresponding path planning unit is used to set the second cutting path of the laser with one of the end surface reference lines as the starting point and the adjacent end surface reference line as the end point.

[0101] When the workpiece is of regular shape, in addition to the above-mentioned module setting, a combination unit and a segmentation unit are also provided;

[0102] The segmentation unit is used to segment the irregularly shaped workpiece into a number of regularly shaped blocks through a three-dimensional model and a coordinate system;

[0103] The combination unit is used to process according to the recognition features of regular shapes (the processing here refers to the configuration of the process line configuration unit, the end face reference line configuration unit and the path planning unit); after processing, the blocks can be combined again according to the segmentation rules.

[0104] In the above, the fixture seat assembly includes:

[0105] A fixture plate, wherein a slide groove is provided at the bottom of the fixture plate, and the slide groove is used to match and fix with a slide rail 212 provided at the lower part of the fixture plate;

[0106] A fixture base 211 is arranged on the upper part of the fixture plate, and mounting seats 210 are arranged on both sides of the fixture base 211. A fixture fixing seat 207 is arranged in the middle part of the fixture base 210. The fixture fixing seat 207 is provided with a plurality of through holes. The fixture fixing seat 207 is used to fix the workpiece in the through holes based on the through holes, so as to achieve the purpose of fixing the workpiece;

[0107] A left fixing frame 206 and a right fixing frame 208 are respectively arranged on both sides of the jig plate, and a left bearing seat 205 and a right bearing seat are respectively arranged in the left fixing frame 206 and the right fixing frame 208; a left connecting shaft and a right connecting shaft 209 are respectively arranged in the left bearing seat 205 and the right bearing seat, wherein the left connecting shaft and the right connecting shaft 209 are respectively fixed in the mounting seat;

[0108] Among them, a margin section is provided after the left connecting shaft 201 passes through the left bearing seat to the left, and a first gear 202 is provided on the margin section; a motor seat 203 is provided on the mounting seat at one end of the left side, and a jig motor 200 is provided on the motor seat 203, and a second gear 204 is provided on the motor shaft of the jig motor 200, and the second gear 204 is meshed with the first gear 202, and the second gear 204 is driven by the jig motor 200 to rotate, and the second gear 204 drives the first gear 202 to rotate, and the rotation of the first gear 202 drives the left connecting shaft 201 to rotate, and the rotation of the left connecting shaft drives the jig base 211 to rotate to adjust the end face position of the workpiece.

[0109] In the above, the moving mechanism comprises:

[0110] A transverse base plate 304 is arranged on the upper part of the vertical base 1, two parallel transverse slide rails 302 are arranged on the transverse base plate 304, a transverse base 303 is arranged on the upper part of the transverse slide rails 302, and a transverse slide groove matching the transverse slide rails is arranged on the lower part of the transverse base 303;

[0111] A mobile motor fixing seat is arranged in the middle part of the horizontal substrate 204 and at the upper edge of the horizontal substrate, and a mobile motor 300 is arranged on the mobile motor fixing seat. A horizontal driving wheel 301 is arranged on the motor shaft of the mobile motor 300, and a left driven wheel 307 and a right driven wheel 306 are respectively arranged on both sides of the horizontal slide rail at the upper end, and a horizontal measuring driven wheel 305 is arranged in the middle of the horizontal base 303, and a horizontal angle sensor is embedded in the horizontal measuring driven wheel 305; the horizontal angle sensor is used to obtain the horizontal rotation amount, and the moving distance of the horizontal base 303 is controlled based on the horizontal rotation amount.

[0112] The right end of the horizontal transmission line 308 is fixed on the right side end surface of the right side of the horizontal base plate, and passes through the horizontal measurement driven wheel 305, the right driven wheel 306, the horizontal driving wheel 301, and the left driven wheel 307 in sequence, and then passes through the horizontal measurement driven wheel 305 again and is fixed on the left side end surface of the left side of the horizontal base plate; for details, refer to Fig.10 ; The arrow points to the direction in which the transverse transmission line 308 is laid, not the direction of rotation.

[0113] A longitudinal substrate 506 for vertically moving the substrate is arranged on the transverse substrate, a longitudinal slide rail 504 arranged in parallel is arranged on the longitudinal substrate 506, a longitudinal base is arranged on the longitudinal slide rail 504, and a longitudinal slide groove matching the longitudinal slide rail is arranged at the lower part of the longitudinal base;

[0114] A longitudinal motor seat 500 is arranged on the right side of the longitudinal substrate, a longitudinal motor 501 is arranged on the longitudinal motor seat 500, and a longitudinal driving wheel 502 is arranged on the motor shaft of the longitudinal motor;

[0115] A front driven wheel 507 and a rear driven wheel 508 are arranged at the front and rear ends of the longitudinal slide rail on the right side, a longitudinal measuring driven wheel 505 is arranged on the longitudinal base, and a longitudinal angle sensor is embedded in the longitudinal measuring driven wheel 505; the longitudinal angle sensor is used to obtain the longitudinal rotation amount, and the moving distance of the longitudinal base is controlled based on the longitudinal rotation amount.

[0116] The front end of the longitudinal transmission line is fixed on the point side end face of the front side of the longitudinal substrate, and it passes through the longitudinal measurement driven wheel, the front driven wheel, the longitudinal driving wheel, the rear driven wheel in sequence, and then passes through the longitudinal measurement driven wheel again and is fixed on the rear side end face of the rear side of the longitudinal substrate.

[0117] The longitudinal base plates extend through both sides of the longitudinal base, and a laser mounting assembly 6 is arranged at the lower part of the longitudinal base.

[0118] Further, the laser mounting assembly 6 comprises: a laser head seat;

[0119] A rotating bearing seat 706 is embedded in the laser head seat, a rotating shaft is arranged in the rotating bearing seat, and a rotating shaft driven wheel 707 is arranged above the rotating shaft;

[0120] A laser docking assembly 9 is provided below the rotating shaft and at the lower part of the laser head seat, and a three-dimensional scanner 8 is provided on one side of the laser docking assembly 9, wherein the three-dimensional scanner 8 is provided at the lower part of the laser head seat;

[0121] The laser docking assembly comprises a docking seat 100, a laser assembly slot 101 in the docking seat, wherein the laser assembly slot is substantially in an inverted V shape, and a buckle assembly is arranged at the opening position of the laser assembly slot;

[0122] The buckle assembly includes: a clamping slot 104 is arranged near the opening of the laser assembly clamping slot, and a spring 102 and a buckle 103 are arranged in the clamping slot 104 .

[0123] Furthermore, the driving mechanism comprises:

[0124] A driving motor mounting plate 702, one end of the left side of the driving motor mounting plate 702 is a fixed end 704, which is fixed to one side of the laser head seat, and a driving motor 703 is arranged at the lower part of the driving motor mounting plate 702, and the motor shaft of the driving motor passes through the driving motor mounting plate, and a driving wheel 701 is arranged on the motor shaft, and the driving wheel 701 is connected to the rotating shaft driven wheel 707 through a belt 705.

[0125] Example 2

[0126] Reference Figure 8 and Fig. 9 , the present application provides a replaceable laser assembly, which is applied to the laser cutting device described above, and the replaceable laser assembly is used to be installed on the laser docking assembly;

[0127] Wherein, the replaceable laser assembly comprises:

[0128] The docking part includes a docking rod 109, a docking housing 117 is arranged outside the docking rod 109, and a docking groove 118 is formed between the docking housing 117 and the docking rod 109.

[0129] A docking port 110 is provided on the docking rod, wherein the docking head 100 is installed in the docking slot, the laser assembly slot and the docking rod are matched and fixed, and the docking port is used for matching and installing with the buckle;

[0130] When the driving mechanism drives the driven wheel of the rotating shaft to rotate, the driven wheel of the rotating shaft drives the rotating shaft to rotate, and the rotating shaft drives the docking rod to rotate through the laser docking assembly.

[0131] The docking plug includes a docking plug 108 and a docking seat 113 , wherein the docking port 110 is disposed at the docking seat 113 ;

[0132] Further, the lower portion of the docking rod is used to connect with the laser structure assembly 119;

[0133] Or connect with the laser through a right angle mechanism to form a right angle laser;

[0134] The right-angle mechanism includes a first connecting sleeve provided on the docking rod 109, the docking rod is connected to the first bevel gear 112 through the first connecting sleeve, and the first bevel gear is meshed with the second bevel gear 115;

[0135] The second bevel gear is installed in the second connecting sleeve 114 , and the second connecting sleeve is connected to the laser 116 .

[0136] Example 3

[0137] On the other hand, the present application also provides a control system, comprising:

[0138] A processing module connected to the three-dimensional scanner, the processing module is used to obtain the surface contour of the workpiece collected by the three-dimensional scanner, and construct a three-dimensional model of the workpiece according to the surface contour of the workpiece;

[0139] A configuration module, which sets a laser path for the workpiece based on a three-dimensional model of the workpiece, and correspondingly generates control instructions for controlling the laser to process the workpiece based on the laser path;

[0140] A control module, based on the control instruction, controls the movement of the moving mechanism, the rotation of the end surface of the workpiece by the fixture seat assembly, and at least two of the driving mechanisms to control the laser to process the workpiece according to a set laser path;

[0141] The laser path of the workpiece is set based on the three-dimensional model of the workpiece, specifically including:

[0142] Identify the three-dimensional model of the workpiece to determine whether there is a preset feature. If there is a preset feature, the location of the preset feature is used as the reference point;

[0143] The three-dimensional model of the workpiece is divided into a plurality of sectors of equal angles by using the reference point, and the position of each sector is recorded; at least one of the sectors is obtained, and a plurality of symmetrical process lines are constructed along the two sides of the sector; the process lines of different heights are reversely taken as the first depth setting of laser cutting; at the same time, the distance between two adjacent process lines of different heights is used as the first cutting length of the laser, and at least one of the process lines is used as the starting point and the adjacent process line is used as the end point to set the first cutting path of the laser;

[0144] A number of end face reference lines perpendicular to the process lines are arranged along the end face of the sector, and the end face reference lines of different lengths are taken in reverse and used as the second depth setting of the laser cutting; at the same time, the distance between two adjacent process lines of different lengths is used as the second cutting length of the laser, and at least one of the end face reference lines is used as the starting point, and the adjacent end face reference lines are used as the end point to set the second cutting path of the laser.

[0145] In the above, the preset feature is a set recognition feature, such as the shape feature of the workpiece, a regular shape such as a circle or a square. If it is a regular shape, the center point of the three-dimensional model of the identified workpiece is used as the reference point, and the three-dimensional model of the workpiece is divided into a plurality of equal-angle sectors with the reference point as the core, and the features of each sector are the same; by inputting the processing parameters of the workpiece on the control panel (set on the side of the vertical base 1, not shown in the figure, a part of the control panel type control system, used to input the processing parameters during processing), the process line and the end face reference line are set according to the processing parameters of the workpiece and the three-dimensional model. Among them, the processing parameters include the processing parameters of the surface contour and the processing parameters of the end face, such as the parameters of grooving or hole opening or the cutting of the surface and end face. Specifically, the formed three-dimensional model can be displayed through the control panel, and the operator can set the position for grooving or hole opening based on the displayed three-dimensional model, and input the parameter information of grooving and hole opening, etc. It is also possible to build a standard library in which a large number of standard models of commonly used workpieces and corresponding processing parameters are established in advance. By comparing the 3D model in the standard library to obtain the same standard model, the corresponding processing program is called according to the processing parameters set in the standard model to perform processing.

[0146] In addition, the preset features can also be features that are easy to identify, such as grooves, holes or protrusions on the workpiece. These features can be used to cut the surface of the workpiece, and can also be used to cut the grooves, holes, etc.

[0147] The present application can also process irregularly shaped workpieces. Irregularly shaped workpieces generally do not have identification features. When there are no identification features, the irregularly shaped workpiece can first be segmented into several regular-shaped blocks through a three-dimensional model and a coordinate system, and then processed according to the identification features of the regular shapes; after processing, the blocks can be combined again according to the segmentation rules.

[0148] In the above, the configuration module has a configuration task management module and a configuration matrix; wherein the configuration task management module is used to configure the form of the configuration matrix according to the number of blocks and sectors;

[0149] When the workpiece is of regular shape, the configuration matrix has a plurality of configuration modules, each of which includes a process line configuration unit, an end face reference line configuration unit and a path planning unit;

[0150] Among them, the process line configuration unit is used to construct a number of symmetrical process lines along the two sides of the sector according to the set processing parameters and three-dimensional model; the process lines at different heights are reversed and used as the first depth setting for laser cutting; at the same time, the distance between two adjacent process lines at different heights is used as the first laser cutting length, such as surface cutting 2mm. For example, if the surface is cut at a cube, if the cube is not a standard cube, when there is a certain error, if a uniform 2mm cut is performed, the ground workpiece will still have this error. At this time, it is necessary to construct equivalent process lines on both sides based on the three-dimensional model of the workpiece, with the plane where the center point is located as the reference line (the cube is a regular shape, so the process line is an equivalent line), leaving a 2mm cutting area, and then the cutting parameter values ​​can be obtained by reversing the equivalent process lines. Some of these parameter values ​​are 2mm, some are less than 2mm, and some are greater than 2mm. When cutting according to these parameter values, a standard cube is obtained.

[0151] The corresponding path planning unit is used to set a first cutting path of the laser with one of the process lines as a starting point and an adjacent process line as an end point;

[0152] The end face reference line configuration unit is used to set a plurality of end face reference lines perpendicular to the process lines along the end face of the sector, and the end face reference lines of different lengths are reversely taken as the second depth setting of laser cutting; at the same time, the distance between two adjacent process lines of different lengths is used as the second laser cutting length;

[0153] The corresponding path planning unit is used to set the second cutting path of the laser with one of the end surface reference lines as the starting point and the adjacent end surface reference line as the end point.

[0154] When the workpiece is of regular shape, in addition to the above-mentioned module setting, a combination unit and a segmentation unit are also provided;

[0155] The segmentation unit is used to segment the irregularly shaped workpiece into a number of regularly shaped blocks through a three-dimensional model and a coordinate system;

[0156] The combination unit is used to process according to the recognition features of regular shapes (the processing here refers to the configuration of the process line configuration unit, the end face reference line configuration unit and the path planning unit); after processing, the blocks can be combined again according to the segmentation rules.

[0157] Example 4

[0158] The present application also provides a control method, which is applied to the control system, comprising the following steps:

[0159] Obtain the control instructions issued by the control system, and decompose the control instructions into a number of instruction units corresponding to the sector positions, each instruction unit forming an instruction set for controlling the laser to process the workpiece according to the set laser path;

[0160] Wherein, the instruction set includes at least an instruction for controlling the movement of the moving mechanism to change the moving path of the laser;

[0161] Instructions for controlling the drive mechanism to control the laser motion; and

[0162] The fixture seat assembly is controlled to rotate the end face of the workpiece to implement instructions for adjusting the position of the workpiece.

[0163] The present application obtains the three-dimensional contour of the workpiece through a three-dimensional scanner, and constructs a three-dimensional model through the three-dimensional contour. The three-dimensional model of the workpiece is identified to determine whether there is a preset feature. If there is a preset feature, the three-dimensional model of the workpiece is divided into multiple equal-angle sectors with the location of the preset feature as the reference point, and a process line and an end face reference line are constructed on each sector to determine the laser cutting depth and cutting path, and then the formation control instruction corresponding to the laser cutting depth and cutting path is output, thereby controlling the movement of the moving mechanism, the end face rotation of the fixture seat assembly to the workpiece, and at least two of the driving mechanisms to control the laser to process the workpiece according to the set laser path. Compared with traditional technology, the present application does not need to set a processing program for the workpiece, and it can construct a corresponding processing control program by constructing a three-dimensional model of the workpiece.

[0164] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. Laser cutting device, characterized in that, include: A vertical base, on which a fixture base assembly is arranged, and on which a laser mechanism is arranged; The laser mechanism includes a moving mechanism, a laser fixing seat arranged on the moving mechanism, a three-dimensional scanner and a laser installation component are arranged at the lower part of the laser fixing seat, and the laser installation component is used to install different replaceable laser components; A driving mechanism for driving the laser mounting assembly to rotate is arranged on the laser fixing seat; A control system connected to the three-dimensional scanner, the driving mechanism and the moving mechanism; The control system has: A processing module connected to the three-dimensional scanner, the processing module is used to obtain the surface contour of the workpiece collected by the three-dimensional scanner, and construct a three-dimensional model of the workpiece according to the surface contour of the workpiece; A configuration module, which sets a laser path of the workpiece based on a three-dimensional model of the workpiece, and correspondingly generates control instructions for controlling the laser assembly to process the workpiece based on the laser path; The control module controls the movement of the moving mechanism, the rotation of the end surface of the workpiece by the fixture seat assembly and at least two of the driving mechanisms based on the control instructions to control the laser assembly to process the workpiece according to the set laser path.

2. The laser cutting device according to claim 1, characterized in that: Setting the laser path of the workpiece based on the three-dimensional model of the workpiece specifically includes: Identify the three-dimensional model of the workpiece to determine whether there is a preset feature. If there is a preset feature, the location of the preset feature is used as the reference point; The three-dimensional model of the workpiece is divided into a plurality of sectors of equal angles by using the reference point, and the position of each sector is recorded; at least one of the sectors is obtained, and a plurality of symmetrical process lines are constructed along the two sides of the sector; the process lines of different heights are reversely taken as the first depth setting of laser cutting; at the same time, the distance between two adjacent process lines of different heights is used as the first cutting length of the laser, and at least one of the process lines is used as the starting point and the adjacent process line is used as the end point to set the first cutting path of the laser; A number of end face reference lines perpendicular to the process lines are arranged along the end face of the sector, and the end face reference lines of different lengths are taken in reverse and used as the second depth setting of the laser cutting; at the same time, the distance between two adjacent process lines of different lengths is used as the second cutting length of the laser, and at least one of the end face reference lines is used as the starting point, and the adjacent end face reference lines are used as the end point to set the second cutting path of the laser.

3. The laser cutting device according to claim 1, characterized in that: The fixture seat assembly comprises: A jig plate, wherein a slide groove is provided at the bottom of the jig plate, and the slide groove is used to match and fix with a slide rail provided at the bottom of the jig plate; A jig base is arranged on the upper part of the jig plate, mounting seats are arranged on both sides of the jig base, a jig fixing seat is arranged in the middle part of the jig base, a plurality of through holes are arranged on the jig fixing seat, and the jig fixing seat is used to fix the workpiece in the through holes based on the through holes, so as to achieve the purpose of fixing the workpiece; A left fixing frame and a right fixing frame are respectively arranged on both sides of the jig plate, and a left bearing seat and a right bearing seat are respectively arranged in the left fixing frame and the right fixing frame; a left connecting shaft and a right connecting shaft are respectively arranged in the left bearing seat and the right bearing seat, wherein the left connecting shaft and the right connecting shaft are respectively fixed in the mounting seat; Among them, a margin section is provided after the left connecting shaft passes through the left bearing seat to the left, and a first gear is provided on the margin section; a motor seat is provided on the mounting seat at one end of the left side, and a jig motor is provided on the motor seat, and a second gear is provided on the motor shaft of the jig motor, and the second gear is meshed with the first gear. The second gear is driven to rotate by the jig motor, and the second gear drives the first gear to rotate. The rotation of the first gear drives the left connecting shaft to rotate, and the rotation of the left connecting shaft drives the jig base to rotate to adjust the position of the workpiece.

4. The laser cutting device according to claim 1, characterized in that: The moving mechanism comprises: A transverse base plate is arranged on the upper part of the vertical base, two parallel transverse slide rails are arranged on the transverse base plate, a transverse base is arranged on the upper part of the transverse slide rails, and a transverse slide groove matching the transverse slide rails is arranged on the lower part of the transverse base; A mobile motor fixing seat is arranged in the middle part of the transverse substrate and at the upper edge of the transverse substrate, a mobile motor is arranged on the mobile motor fixing seat, a transverse driving wheel is arranged on the motor shaft of the mobile motor, a left driven wheel and a right driven wheel are arranged on both sides of the transverse slide rail at the upper end, a transverse measuring driven wheel is arranged in the middle of the transverse base, and a transverse angle sensor is embedded in the transverse measuring driven wheel; The right end of the transverse transmission line is fixed on the right side end surface of the right side of the transverse base plate, passes through the transverse measurement driven wheel, the right driven wheel, the transverse driving wheel, the left driven wheel in sequence, passes through the transverse measurement driven wheel again, and is fixed on the left side end surface of the left side of the transverse base plate; A longitudinal substrate for vertically moving the substrate is arranged on the transverse substrate, a longitudinal slide rail arranged in parallel is arranged on the longitudinal substrate, a longitudinal base is arranged on the longitudinal slide rail, and a longitudinal slide groove matching the longitudinal slide rail is arranged at the lower part of the longitudinal base; A longitudinal motor seat is arranged on the right side of the longitudinal base plate, a longitudinal motor is arranged on the longitudinal motor seat, and a longitudinal driving wheel is arranged on the motor shaft of the longitudinal motor; A front driven wheel and a rear driven wheel are arranged at the front and rear ends of the longitudinal slide rail on the right side, a longitudinal measuring driven wheel is arranged on the longitudinal base, and a longitudinal angle sensor is embedded in the longitudinal measuring driven wheel; The front end of the longitudinal transmission line is fixed on the point side end face of the front side of the longitudinal substrate, and it passes through the longitudinal measurement driven wheel, the front driven wheel, the longitudinal driving wheel, the rear driven wheel in sequence, and then passes through the longitudinal measurement driven wheel again and is fixed on the rear side end face of the rear side of the longitudinal substrate. The longitudinal base plates extend through the two sides of the longitudinal base, and a laser installation assembly is arranged at the lower part of the longitudinal base.

5. The laser cutting device according to claim 1, characterized in that: The laser installation assembly includes: a laser head seat; A rotating bearing seat is embedded in the laser head seat, a rotating shaft is arranged in the rotating bearing seat, and a rotating shaft driven wheel is arranged above the rotating shaft; A laser docking assembly is arranged below the rotating shaft and at the lower part of the laser head seat, and a three-dimensional scanner is arranged on one side of the laser docking assembly, wherein the three-dimensional scanner is arranged at the lower part of the laser head seat; The laser docking assembly has a docking seat, in which a laser assembly slot is arranged, wherein the laser assembly slot is roughly inverted V-shape, and a buckle assembly is arranged at the opening position of the laser assembly slot; The buckle assembly comprises: a clamping slot is arranged near the opening position of the laser assembly clamping slot, and a spring and a buckle are arranged in the clamping slot.

6. The laser cutting device according to claim 1, characterized in that: The driving mechanism comprises: The drive motor mounting plate is fixed on one side of the laser head seat. A drive motor is arranged at the lower part of the drive motor mounting plate. The motor shaft of the drive motor passes through the drive motor mounting plate, and a drive wheel is arranged on the motor shaft. The drive wheel is connected to the driven wheel of the rotating shaft through a belt.

7. A replaceable laser assembly, applied to the laser cutting device according to claim 1 or 5, wherein the replaceable laser assembly is used to be mounted on the laser docking assembly; in, The replaceable laser assembly has: The docking part includes a docking rod, a docking shell is arranged outside the docking rod, and a docking groove is formed between the docking shell and the docking rod. A docking port is provided on the docking rod, wherein the docking head seat is installed in the docking groove, the laser component slot and the docking rod are matched and fixed, and the docking port is used for matching and installing with the buckle; When the driving mechanism drives the driven wheel of the rotating shaft to rotate, the driven wheel of the rotating shaft drives the rotating shaft to rotate, and the rotating shaft drives the docking rod to rotate through the laser docking assembly.

8. The replaceable laser assembly according to claim 7, characterized in that: The lower part of the docking rod is used to connect with the laser; Or connect with the laser through a right angle mechanism to form a right angle laser; Wherein, the right-angle mechanism includes: a first connecting sleeve is arranged on the docking rod, the docking rod is connected to the first bevel gear through the first connecting sleeve, and the first bevel gear is meshed with the second bevel gear; The second bevel gear is installed in a second connecting sleeve, and the second connecting sleeve is connected to the laser.

9. A control system for a laser cutting device according to claims 1 to 6, characterized in that: include: A processing module connected to the three-dimensional scanner, the processing module is used to obtain the surface contour of the workpiece collected by the three-dimensional scanner, and construct a three-dimensional model of the workpiece according to the surface contour of the workpiece; A configuration module, which sets a laser path for the workpiece based on a three-dimensional model of the workpiece, and correspondingly generates control instructions for controlling the laser to process the workpiece based on the laser path; A control module, based on the control instruction, controls the movement of the moving mechanism, the rotation of the end surface of the workpiece by the fixture seat assembly, and at least two of the driving mechanisms to control the laser to process the workpiece according to a set laser path; The laser path of the workpiece is set based on the three-dimensional model of the workpiece, specifically including: Identify the three-dimensional model of the workpiece to determine whether there is a preset feature. If there is a preset feature, the location of the preset feature is used as the reference point; The three-dimensional model of the workpiece is divided into a plurality of sectors of equal angles by using the reference point, and the position of each sector is recorded; at least one of the sectors is obtained, and a plurality of symmetrical process lines are constructed along the two sides of the sector; the process lines of different heights are reversely taken as the first depth setting of laser cutting; at the same time, the distance between two adjacent process lines of different heights is used as the first cutting length of the laser, and at least one of the process lines is used as the starting point and the adjacent process line is used as the end point to set the first cutting path of the laser; A number of end face reference lines perpendicular to the process lines are arranged along the end face of the sector, and the end face reference lines of different lengths are taken in reverse and used as the second depth setting of the laser cutting; at the same time, the distance between two adjacent process lines of different lengths is used as the second cutting length of the laser, and at least one of the end face reference lines is used as the starting point, and the adjacent end face reference lines are used as the end point to set the second cutting path of the laser.

10. A control method, applied to the control system according to claim 9, characterized in that: The steps include: Obtain the control instructions issued by the control system, and decompose the control instructions into a number of instruction units corresponding to the sector positions, each instruction unit forming an instruction set for controlling the laser to process the workpiece according to the set laser path; Wherein, the instruction set includes at least an instruction for controlling the movement of the moving mechanism to change the moving path of the laser; Instructions for controlling the drive mechanism to control the laser motion; and The fixture seat assembly is controlled to rotate the end face of the workpiece to implement instructions for adjusting the position of the workpiece.

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