Workpiece positioning device and assembly positioning method for structural components

Abstract

The present invention discloses a workpiece positioning device and an assembly positioning method for a structural component. The device includes a positioning platform and a positioning mechanism. The positioning mechanism includes an X-direction positioning mechanism and a Y-direction positioning mechanism arranged on both sides of the positioning platform and extending along mutually perpendicular X and Y directions; the positioning mechanism includes a linearly movable laser emitter, and the laser emitter is used to emit a line laser that projects onto the structural component as a reference line. The method includes scribing a calibration line on the structural component to be assembled; placing the second structural component flat on the platform surface; starting the positioning mechanism to align the line laser with the calibration line on the second structural component; driving the laser emitter to move a preset distance along a set direction, and the emitted line laser projects a theoretical positioning position on the second structural component; assembling the first structural component onto the second structural component and adjusting the position so that the calibration line on the first structural component aligns with the theoretical positioning position. Through the present invention, the operation efficiency can be improved, and the positioning and assembly accuracy can be guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of construction machinery, and specifically relates to a workpiece positioning device and an assembly positioning method for structural components. Background Art

[0002] Most of the structural components or assemblies of construction machinery are large-sized and heavy steel structural parts, which are inconvenient to move and difficult to operate. Moreover, they usually involve the welding of multiple sub-assemblies. The relative position dimensions between the sub-assemblies usually rely on manual measurement and assurance by operators, not only with poor measurement accuracy but also low measurement efficiency.

[0003] Such as Figure 1 shown, is a schematic diagram of the assembly process of a structural component 10 of a construction machinery, which consists of two parts: a cylindrical first structural member 101 and an X-shaped box-shaped second structural member 102. During the assembly and welding process, it is necessary to accurately align the first structural member 101 and the second structural member 102 and then perform welding. This is difficult to operate, requiring manual measurement, adjustment, and continuous movement of the structural members. Especially when the reference plane of the first structural member 101 and the hole center reference plane of the second structural member 102 are not on the same horizontal plane, the manual scribing and visual measurement methods lack reference and scribing landing points, resulting in large measurement errors and low efficiency. Summary of the Invention

[0004] In view of the above defects or deficiencies, the present invention provides a workpiece positioning device and an assembly positioning method for structural components, which can assist in workpiece positioning, measurement, and guiding assembly, improving the operation efficiency and assembly accuracy.

[0005] According to one aspect of the present invention, a workpiece positioning device is provided, including:

[0006] A positioning platform, including a platform surface for placing the structural components to be assembled; and

[0007] A positioning mechanism, including an X-direction positioning mechanism and a Y-direction positioning mechanism arranged on both sides of the positioning platform and extending along the mutually perpendicular X-direction and Y-direction of the platform surface respectively;

[0008] Wherein, the positioning mechanism includes a laser emitter capable of linear movement, and the laser emitter is used to emit line laser projected onto the structural component as a reference line.

[0009] In some embodiments, the X-direction positioning mechanism includes:

[0010] An X-direction guide rail platform provided with an X-direction linear guide rail;

[0011] An X-direction horizontal movement mechanism, including an X-direction horizontal slider capable of sliding along the X-direction linear guide rail;

[0012] The first upright post extends vertically upward from the X-direction horizontal slider and is provided with a first vertical guide rail;

[0013] The first vertical moving mechanism includes a first vertical slider capable of sliding along the first vertical guide rail;

[0014] The first laser emitter is installed on the first vertical slider and is used to emit X-direction positioning line laser extending along the Y direction.

[0015] In some embodiments, the Y-direction positioning mechanism includes:

[0016] The Y-direction guide rail platform is provided with a Y-direction linear guide rail;

[0017] The Y-direction horizontal moving mechanism includes a Y-direction horizontal slider capable of sliding along the Y-direction linear guide rail;

[0018] The second upright post extends vertically upward from the Y-direction horizontal slider and is provided with a second vertical guide rail;

[0019] The second vertical moving mechanism includes a second vertical slider capable of sliding along the second vertical guide rail;

[0020] The second laser emitter is installed on the second vertical slider and is used to emit Y-direction positioning line laser extending along the X direction.

[0021] In some embodiments, the X-direction linear guide rail, the Y-direction linear guide rail, the first vertical guide rail and the second vertical guide rail are all multiple parallel guide rails.

[0022] In some embodiments, the X-direction horizontal slider, the first vertical slider, the Y-direction horizontal slider and the second vertical slider are all rectangular sliders;

[0023] And / or, the X-direction guide rail platform and the Y-direction guide rail platform are respectively provided with measurement scale lines along the length direction.

[0024] In some embodiments, the X-direction horizontal moving mechanism includes an X-direction servo motor for driving the slider to linearly reciprocate along the X direction, and the Y-direction horizontal moving mechanism includes a Y-direction servo motor for driving the slider to linearly reciprocate along the Y direction.

[0025] In some embodiments, the positioning platform includes a leveling mechanism for leveling the platform surface;

[0026] And / or, the laser emitter is a laser line marker;

[0027] And / or, the workpiece positioning device includes a PLC programming controller for controlling the X-direction servo motor and the Y-direction servo motor.

[0028] In some embodiments, the positioning mechanism further includes a Z - direction positioning mechanism arranged on the side of the positioning platform. The Z - direction positioning mechanism includes a Z - direction column and a Z - direction laser emitter movably mounted vertically on the Z - direction column. The Z - direction laser emitter is used to emit a Z - direction positioning line laser extending in the XY - plane direction.

[0029] According to a second aspect of the present invention, there is provided an assembly positioning method for a structural component, including:

[0030] Mark calibration lines on the first structural member and the second structural member to be assembled respectively;

[0031] Adopt the workpiece positioning device according to claim 1, and place the second structural member flat on the platform surface of the positioning platform;

[0032] Start the positioning mechanism, and align the line laser emitted by the laser emitter with the calibration line on the second structural member;

[0033] After the calibration lines are aligned, drive the laser emitter to move a preset distance along a set direction, and the emitted line laser projects a theoretical positioning position on the second structural member;

[0034] Assemble the first structural member to the second structural member, and adjust the position so that the calibration line on the first structural member aligns with the theoretical positioning position.

[0035] In some embodiments, the step of marking calibration lines on the first structural member and the second structural member to be assembled respectively further includes:

[0036] Mark a first X - direction calibration line and a first Y - direction calibration line on the first structural member;

[0037] Mark a second X - direction calibration line and a second Y - direction calibration line on the second structural member.

[0038] In some embodiments, start the positioning mechanism, and align the line laser emitted by the laser emitter with the calibration line on the second structural member; after the calibration lines are aligned, drive the laser emitter to move a preset distance along a set direction, and the emitted line laser projects a theoretical positioning position on the second structural member; further includes:

[0039] Adjust the position of the X - direction positioning mechanism along the X - direction, so that the X - direction positioning line laser emitted by the first laser emitter of the X - direction positioning mechanism aligns with the second X - direction calibration line;

[0040] Drive the first laser emitter to move a preset distance in the X direction, so that the X-direction positioning line laser projects an X-direction theoretical positioning position on the second structural member.

[0041] In some embodiments, start the positioning mechanism to align the line laser emitted by the laser emitter with the calibration line on the second structural member; after the calibration line is aligned, drive the laser emitter to move a preset distance in the set direction, and the emitted line laser projects a theoretical positioning position on the second structural member; further comprising:

[0042] Adjust the position of the Y-direction positioning mechanism along the Y direction to align the Y-direction positioning line laser emitted by the second laser emitter of the Y-direction positioning mechanism with the second Y-direction calibration line;

[0043] Drive the second laser emitter to move a preset distance in the Y direction, so that the Y-direction positioning line laser projects a Y-direction theoretical positioning position on the second structural member.

[0044] In some embodiments, the step of assembling the first structural member to the second structural member and adjusting the position so that the calibration line on the first structural member aligns with the theoretical positioning position further comprises:

[0045] Adjust the X-direction position of the first structural member to align the first X-direction calibration line with the X-direction theoretical positioning position;

[0046] Adjust the Y-direction position of the first structural member to align the first Y-direction calibration line with the Y-direction theoretical positioning position.

[0047] In some embodiments, the first structural member is a cylindrical member, and the second structural member is provided with a first symmetric center hole and a second symmetric center hole arranged at intervals along the Y direction;

[0048] Wherein, the first X-direction calibration line and the first Y-direction calibration line are mutually perpendicular radial lines passing through the center of the cylinder of the first structural member; the second X-direction calibration line is the connecting line of the centers of the first symmetric center hole and the second symmetric center hole, and the second Y-direction calibration line is the symmetry line of the first symmetric center hole and the second symmetric center hole.

[0049] Through the workpiece positioning device and the assembly positioning method of the structural components of the present invention, during the operations such as assembly and welding of the workpiece, compared with the existing manual scribing positioning, the workpiece positioning device of the present invention can accurately calibrate the position through the line laser, guide the alignment and assembly, and can accurately measure the dimensions of the structural components through the linear movement of the positioning mechanism, that is, realize the accurate measurement or positioning of the spatial dimensions of the structural components. In other words, through the walking distance of the positioning mechanism, the automatic search and positioning of the spatial dimensions can be realized. Therefore, by using the workpiece positioning device of the present invention, it can assist in workpiece positioning, measurement and guiding assembly, and during the assembly process of the structural components, the operation efficiency can be greatly improved, and the positioning and assembly accuracy can be guaranteed.

[0050] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0051] The drawings are used to provide an understanding of the present invention and constitute a part of the specification, and are used together with the following specific implementation to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0052] Figure 1 It is a schematic diagram of the assembly process of the structural components of a construction machinery;

[0053] Figure 2 、 Figure 3 It is a three-dimensional view of the workpiece positioning device according to the specific implementation of the present invention, where Figure 3 To more clearly show the line laser, the positioning platform is hidden;

[0054] Figure 4-1 Figure 4-2 Respectively illustrate the schematic diagrams of drawing calibration lines on the first structural component and the second structural component to be assembled;

[0055] Figure 4-3 Illustrates the moving distance relationship between the calibration lines in the assembled structural components;

[0056] Figure 5 It is a schematic diagram when the X-direction positioning line laser is aligned with the second X-direction calibration line in the assembly positioning method of the structural components according to the specific implementation of the present invention;

[0057] Figure 6 It is a schematic diagram when the Y-direction positioning line laser is aligned with the second Y-direction calibration line in the assembly positioning method of the structural components according to the specific implementation of the present invention;

[0058] Figure 7 Shows the schematic diagram of the assembled structural components in the assembly positioning method of the structural components according to the specific implementation of the present invention; and ​

[0059] Figure 8 Schematic diagram of the steps of the assembly positioning method of the structural components according to the specific embodiments of the present invention.

[0060] Description of reference numerals

[0061] 10 Structural component 20 X-direction positioning mechanism

[0062] 30 Y-direction positioning mechanism 40 Positioning platform

[0063] 101 First structural member 102 Second structural member

[0064] 1010 Cylinder center 1011 First Y-direction calibration line

[0065] 1012 First X-direction calibration line 1021 First symmetric center hole

[0066] 1022 Second symmetric center hole 1023 Second Y-direction calibration line

[0067] 1024 Second X-direction calibration line

[0068] 201 X-direction guide rail platform 202 X-direction linear guide rail

[0069] 203 X-direction horizontal slider 204 X-direction driving mechanism

[0070] 205 First column 206 First vertical guide rail

[0071] 207 First vertical slider 208 First vertical driving mechanism

[0072] 209 First laser emitter 210 X-direction positioning line laser

[0073] 301 Y-direction guide rail platform 302 Y-direction linear guide rail

[0074] 303 Y-direction horizontal slider 304 Y-direction driving mechanism

[0075] 305 Second column 306 Second vertical guide rail

[0076] 307 Second vertical slider 308 Second vertical driving mechanism

[0077] 309 Second laser emitter 310 Y-direction positioning line laser

[0078] A Preset distance in the X direction B Preset distance in the Y direction Specific embodiments

[0079] The following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and illustrating the present invention, and are not used to limit the present invention.

[0080] The following describes the assembly positioning method of the workpiece positioning device and the structural components of the present invention with reference to the drawings.

[0081] To facilitate the accurate measurement and positioning of the spatial dimensions of steel structural members for precise assembly, the present invention provides a novel workpiece positioning device. Refer to Figure 2 、 Figure 3 , in a specific embodiment, the workpiece positioning device includes:

[0082] A positioning platform 40, including a platform surface for placing the structural members to be assembled; and

[0083] A positioning mechanism, including an X-direction positioning mechanism 20 and a Y-direction positioning mechanism 30 arranged on both sides of the positioning platform 40 and extending along the mutually perpendicular X-direction and Y-direction of the platform surface respectively;

[0084] Among them, the positioning mechanism includes a laser emitter capable of linear movement, and the laser emitter is used to emit line lasers projected onto the structural members as reference lines.

[0085] It can be seen that when the structural members to be assembled are placed on the platform surface, the line lasers in the X-direction and Y-direction can be emitted through the laser emitter to accurately mark the positioning positions, including the actual positions or theoretical positioning positions, which facilitates precise positioning. Among them, through the X-direction positioning mechanism 20 and the Y-direction positioning mechanism 30, the X-direction and Y-direction can be accurately positioned respectively, so that precise planar position positioning can be achieved on the parallel plane of the platform surface of the positioning platform 40. During the assembly process, the continuously projected line lasers can play a role in assisting and guiding the position of the workpiece to assist in completing the assembly of the workpiece. Further, accurate measurement in the X-direction and Y-direction can also be achieved, which will be specifically described below. Therefore, this workpiece positioning device can not only be used as an assembly auxiliary tool, but also be used as an automatic measuring device suitable for engineering machinery steel structural members, but the purpose of the present invention is not limited thereto.

[0086] In the illustrated embodiment, the positioning platform 40 is rectangular, and the X-direction positioning mechanism 20 and the Y-direction positioning mechanism 30 are respectively arranged on both sides of the rectangular positioning platform and parallel to the rectangular sides. Of course, the positioning platform 40 is not limited to rectangular, and can also be circular, etc., but the X-direction positioning mechanism 20 and the Y-direction positioning mechanism 30 are arranged perpendicular to each other.

[0087] Taking Figure 2 、 Figure 3 as an example, in this embodiment, the X-direction positioning mechanism 20 includes:

[0088] The X-direction guide rail platform 201 is provided with an X-direction linear guide rail 202;

[0089] The X-direction horizontal movement mechanism includes an X-direction horizontal slider 203 that can slide along the X-direction linear guide rail 202;

[0090] The first upright post 205 extends vertically upward from the X-direction horizontal slider 203 and is provided with a first vertical guide rail 206;

[0091] The first vertical movement mechanism includes a first vertical slider 207 that can slide along the first vertical guide rail 206;

[0092] The first laser emitter 209 is installed on the first vertical slider 207 and is used to emit the X-direction positioning line laser 210 extending along the Y direction.

[0093] Similarly, the Y-direction positioning mechanism 30 includes:

[0094] The Y-direction guide rail platform 301 is provided with a Y-direction linear guide rail 302;

[0095] The Y-direction horizontal movement mechanism includes a Y-direction horizontal slider 303 that can slide along the Y-direction linear guide rail 302;

[0096] The second upright post 305 extends vertically upward from the Y-direction horizontal slider 303 and is provided with a second vertical guide rail 306;

[0097] The second vertical movement mechanism includes a second vertical slider 307 that can slide along the second vertical guide rail 306;

[0098] The second laser emitter 309 is installed on the second vertical slider 307 and is used to emit the Y-direction positioning line laser 310 extending along the X direction.

[0099] Among them, the X-direction horizontal movement mechanism further includes an X-direction driving mechanism 204, such as a driving motor, a gear, etc. The X-direction horizontal slider 203 can linearly reciprocate along the X-direction linear guide rail 202 under the drive of the X-direction driving mechanism 204. Similarly, the first vertical movement mechanism can include a first vertical driving mechanism 208, and the first vertical slider 207 reciprocates vertically along the first vertical guide rail 206 under the drive of the first vertical driving mechanism 208. Similarly, the Y-direction horizontal movement mechanism further includes a Y-direction driving mechanism 304, such as a driving motor, a gear, etc. The Y-direction horizontal slider 303 can linearly reciprocate along the Y-direction linear guide rail 302 under the drive of the Y-direction driving mechanism 304. Similarly, the second vertical movement mechanism can include a second vertical driving mechanism 308, and the second vertical slider 307 reciprocates vertically along the second vertical guide rail 306 under the drive of the second vertical driving mechanism 308.

[0100] Those skilled in the art understand that the X-direction horizontal movement mechanism, Y-direction horizontal movement mechanism, first vertical movement mechanism, and second vertical movement mechanism can adopt a screw-nut structure driven manually or electrically to accurately control the displacement and displacement amount of the slider and lock the displacement in real time. Of course, other driving mechanisms and methods for linearly driving the slider can also be used, and no further examples will be given here.

[0101] To facilitate the precise control of the displacement of the slider, for example, when each movement mechanism adopts a screw-nut structure to drive the slider, the X-direction horizontal movement mechanism may include an X-direction servo motor for driving the slider to linearly reciprocate along the X direction, and the Y-direction horizontal movement mechanism may also include a Y-direction servo motor for driving the slider to linearly reciprocate along the Y direction. Optionally, the first vertical movement mechanism and the second vertical movement mechanism may also adopt servo motors.

[0102] Among them, in order to maintain the smoothness of the linear movement of the slider driving the laser emitter, the guide rails play a guiding role. Further, the X-direction linear guide rail 202, Y-direction linear guide rail 302, first vertical guide rail 206, and second vertical guide rail 306 are all designed as multiple parallel guide rails, such as two guide rails arranged in parallel at intervals, so that the slider does not generate lateral offset or swing during the linear movement. Of course, three or more parallel slide rails can also be used. Correspondingly, in this embodiment, the X-direction horizontal slider 203, first vertical slider 207, Y-direction horizontal slider 303, and second vertical slider 307 are all designed as rectangular sliders. In this way, when the rectangular slider moves on the double guide rails, it can be smoother, ensuring that the line laser emitted by the carried laser emitter can always maintain an accurate orientation.

[0103] To facilitate observing the linear displacement amount of the slider, measurement scale lines (not shown in the figure) along the length direction may be provided on the X-direction guide rail platform 201 and the Y-direction guide rail platform 301 respectively. Of course, as is well known to those skilled in the art, further, a displacement sensor can also be installed on the slider and displayed in real time through a digital display screen. In this way, accurate measurement in the X direction and Y direction of the workpiece placed on the positioning platform 40 can be achieved, and it can be used as an automatic measurement device suitable for engineering machinery steel structure parts.

[0104] It should be noted that the above-mentioned laser emitter adopts a common laser marking instrument, which can use a semiconductor laser as the light source, emit a highly collimated point light source after being integrated by a group of lens combinations, and then form a uniformly bright light line after being scattered by a special prism. In addition, to facilitate the leveling of the platform surface, the positioning platform 40 may include a leveling mechanism for leveling the platform surface, such as multiple adjustable telescopic legs, adjustable lifting platforms, and so on.

[0105] In addition, it should be noted that in Figure 2 、 Figure 3In the shown embodiment, the X-direction positioning mechanism 20 and the Y-direction positioning mechanism 30 have the same shape and structure, but the present invention is obviously not limited thereto, and the X-direction positioning mechanism 20 and the Y-direction positioning mechanism 30 may also have different shapes and structures.

[0106] Furthermore, for facilitating automation and automatic control, the workpiece positioning device may include a PLC programming controller for controlling the X-direction servo motor and the Y-direction servo motor. In this way, during the measurement or assembly process, each motor can be controlled one by one through the PLC programming controller, so as to precisely control the movement and stop of each slider independently according to the program settings, etc.

[0107] Even further, the positioning mechanism of the workpiece positioning device may further include a Z-direction positioning mechanism arranged on the side of the positioning platform 40 ( Figure 2 , Figure 3 not shown in the figure). Similarly, the Z-direction positioning mechanism includes a Z-direction column and a Z-direction laser emitter that is vertically movably installed on the Z-direction column. The Z-direction laser emitter is used to emit a Z-direction positioning line laser extending in the XY plane direction. The Z-direction positioning mechanism can be placed on the side of the positioning platform 40 and is arranged diagonally with the X-direction positioning mechanism 20 and the Y-direction positioning mechanism 30. In this way, when the workpiece on the positioning platform 40 needs to be three-dimensionally positioned or measured, the X-direction positioning mechanism 20, the Y-direction positioning mechanism, and the Z-direction positioning mechanism can be further used in combination. The structure and working principle of the Z-direction positioning mechanism are similar to those of the X-direction positioning mechanism 20 and the Y-direction positioning mechanism, and will not be elaborated here.

[0108] Based on the above workpiece positioning device, the present invention also discloses an assembly positioning method for a structural component. Refer to Figure 8 , in this specific embodiment, the method includes:

[0109] Step S100, respectively draw calibration lines on the first structural member 101 and the second structural member 102 to be assembled;

[0110] Step S200, use the workpiece positioning device to place the second structural member 102 flat on the platform surface of the positioning platform 40;

[0111] Step S300, start the positioning mechanism to align the line laser emitted by the laser emitter with the calibration line on the second structural member 102;

[0112] Step S400, after the calibration lines are aligned, drive the laser emitter to move a preset distance along the set direction, and the emitted line laser projects a theoretical positioning position on the second structural member 102;

[0113] Step S500, assemble the first structural member 101 to the second structural member 102 and adjust the position so that the calibration line on the first structural member 101 is aligned with the theoretical positioning position.

[0114] Obviously, in the above method, calibration lines are first made on each structural component, and then the second structural component is placed on the platform surface. After the line laser of the positioning mechanism is aligned with the calibration line on the second structural component, it is then moved a preset distance to reach the set position in the X and / or Y directions, that is, the theoretical positioning position. In this way, during assembly, it is only necessary to align the calibration line of the first structural component with the theoretical positioning position to complete precise assembly, welding, etc. In this process, the projected line laser can clearly and accurately guide the calibration and alignment. The movement and movement amount of the laser generator of the positioning mechanism along the X and / or Y directions are precise, controllable, and measurable. The alignment during assembly and welding is clear, accurate, and convenient, with low operational difficulty. It also eliminates manual measurement errors and reduces the labor intensity when moving bulky structural components.

[0115] In this embodiment, see Figure 4-1 、 Figure 4-2 , the above step S100 may further include:

[0116] Marking a first X-direction marking line 1012 and a first Y-direction marking line 1011 on the first structural member 101;

[0117] A second X-direction marking line 1024 and a second Y-direction marking line 1023 are marked on the second structural member 102 .

[0118] As mentioned above, as an example, the first structural member 101 shown in the figure is a cylindrical member, and the second structural member 102 is an X-shaped box, on which a first symmetrical center hole 1021 and a second symmetrical center hole 1022 are arranged at intervals along the Y direction; wherein the first X-direction marking line 1012 and the first Y-direction marking line 1011 are mutually perpendicular radial lines passing through the cylindrical center 1010 of the first structural member 101; the second X-direction marking line 1024 is the line connecting the hole centers of the first symmetrical center hole 1021 and the second symmetrical center hole 1022, and the second Y-direction marking line 1023 is the symmetry line of the first symmetrical center hole 1021 and the second symmetrical center hole 1022.

[0119] In this way, Figure 4-1 The first structural member 101 is assembled to Figure 4-2 When welded to the second structural member 102 shown, the X-direction spacing between the cylinder center 1010 of the first structural member 101 and the second X-direction marking line 1024 is the X-direction preset distance A shown in the figure, and the Y-direction spacing between the cylinder center 1010 and the second Y-direction marking line 1023 is the Y-direction preset distance B shown in the figure.

[0120] Therefore, in step S200, place the second structural member 102 flat on the platform surface of the positioning platform 40, and adjust its orientation so that the second X-direction calibration line 1024 is along the Y direction and the second Y-direction calibration line 1023 is along the X direction.

[0121] Further, in step S300, adjust the position of the X-direction positioning mechanism 20 along the X direction so that the X-direction positioning line laser 210 emitted by the first laser emitter 209 of the X-direction positioning mechanism 20 is aligned with the second X-direction calibration line 1024, as Figure 5 shown. Then, refer to Figure 7 , drive the first laser emitter 209 to move along the X direction by a preset X-direction distance A, so that the X-direction positioning line laser 210 projects the X-direction theoretical positioning position on the second structural member 102. If only X-direction positioning is required, then align the calibration line of the first structural member 101 with Figure 7 the line laser 210 in , and then the alignment and installation can be achieved with high precision.

[0122] However, in this embodiment, the alignment for assembly welding requires precise positioning in both the X direction and the Y direction. Therefore, further, adjust the position of the Y-direction positioning mechanism 30 along the Y direction so that the Y-direction positioning line laser 310 emitted by the second laser emitter 309 of the Y-direction positioning mechanism 30 is aligned with the second Y-direction calibration line 1023, as Figure 6 shown. Then, refer to Figure 7 , drive the second laser emitter 309 to move along the Y direction by a preset Y-direction distance B, so that the Y-direction positioning line laser 310 projects the Y-direction theoretical positioning position on the second structural member 102. It should be noted that the value range of the preset Y-direction distance B is B = 0 or B > 0. When B = 0, the processes of positioning and moving the laser emitter along the Y direction can be omitted.

[0123] After moving the laser emitter along the two directions by the set distances respectively, finally assemble the first structural member 101 onto the second structural member 102. Through position adjustment, align the calibration line on the first structural member 101 with the theoretical positioning position. Specifically, it can be carried out step by step. For example, first adjust the X-direction position of the first structural member 101 so that the first X-direction calibration line 1012 is aligned with the X-direction theoretical positioning position, that is, aligned with the line laser 210; at the same time, adjust the Y-direction position of the first structural member 101 so that the first Y-direction calibration line 1011 is aligned with the Y-direction theoretical positioning position, that is, aligned with the line laser 310.

[0124] Through the above steps, accurate detection and positioning of dimensions A and B can be achieved after the first structural member 101 is inserted onto the second structural member 102. Of course, the above positioning and assembly processes can be manually operated or, as described above, controlled by an automated program such as PLC preset programming to achieve automatic assembly operations.

[0125] Furthermore, as described above, when the positioning mechanism of the workpiece positioning device further includes a Z-direction positioning mechanism arranged on the side of the positioning platform 40, the Z-direction positioning line laser emitted by the Z-direction laser emitter can assist in calibrating and aligning the first structural member 101 and the second structural member 102 in the Z direction.

[0126] It should be noted that in this embodiment, the cylindrical first structural member 101 and the X-shaped box-shaped second structural member 102 are used as examples. However, obviously, the first and second structural members can have other different structural shapes. Those skilled in the art can understand that the calibration lines and positions on the structural members are different, and can be specifically set according to specific installation dimension requirements.

[0127] In summary, compared with the existing manual scribing positioning, the present invention has at least the following advantages:

[0128] 1) By using the workpiece positioning device of the present invention, the spatial dimensions of steel structural members can be accurately measured or positioned;

[0129] 2) By continuously projecting line laser stably, it can assist in guiding the position of the workpiece and assist in completing the assembly and welding of the workpiece;

[0130] 3) Steel structural members of different models have different spatial dimensions. The workpiece positioning device can quickly set the travel distance of the moving travel mechanism, and both automatic searching and positioning of spatial dimensions can be achieved.

[0131] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0132] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0133] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0134] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations of the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for assembling and positioning a structural component, characterized in that: The assembly positioning method is applied to a workpiece positioning device, the workpiece positioning device comprising a positioning platform (40) and a positioning mechanism, the positioning platform (40) comprising a platform surface for placing a structural member to be assembled, the positioning mechanism comprising an X-direction positioning mechanism (20) and a Y-direction positioning mechanism (30) arranged on both sides of the positioning platform (40) and extending in X-directions and Y-directions perpendicular to each other on the platform surface, respectively; wherein the positioning mechanism comprises a laser emitter capable of linear movement, the laser emitter being used to emit a line laser projected onto the structural member as a reference line, the method comprising: Marking marking lines on the first structural member (101) and the second structural member (102) to be assembled; Using the workpiece positioning device, the second structural member (102) is placed flat on the platform surface of the positioning platform (40); activating the positioning mechanism to align the line laser emitted by the laser transmitter with the calibration line on the second structural member (102); After the calibration line is aligned, the laser emitter is driven to move a preset distance along a set direction, and the emitted line laser projects a theoretical positioning position on the second structural member (102); The first structural member (101) is assembled onto the second structural member (102), and the position is adjusted so that the marking line on the first structural member (101) is aligned with the theoretical positioning position.

2. The method for assembling and positioning a structural component according to claim 1, wherein: The step of marking marking lines on the first structural member (101) and the second structural member (102) to be assembled further comprises: Marking a first X-direction marking line (1012) and a first Y-direction marking line (1011) on the first structural member (101); A second X-direction marking line (1024) and a second Y-direction marking line (1023) are marked on the second structural member (102).

3. The method for assembling and positioning a structural component according to claim 2, wherein: The positioning mechanism is activated to align the line laser emitted by the laser emitter with the calibration line on the second structural member (102); after the calibration line is aligned, the laser emitter is driven to move a preset distance along a set direction, and the emitted line laser projects a theoretical positioning position on the second structural member (102); further comprising: Adjusting the position of the X-direction positioning mechanism (20) along the X-direction so that the X-direction positioning line laser (210) emitted by the first laser emitter (209) of the X-direction positioning mechanism (20) is aligned with the second X-direction marking line (1024); The first laser emitter (209) is driven to move along the X direction by a preset X-direction distance (A), so that the X-direction positioning line laser (210) projects an X-direction theoretical positioning position on the second structural member (102).

4. The method for assembling and positioning a structural component according to claim 3, wherein: The positioning mechanism is activated to align the line laser emitted by the laser emitter with the calibration line on the second structural member (102); after the calibration line is aligned, the laser emitter is driven to move a preset distance along a set direction, and the emitted line laser projects a theoretical positioning position on the second structural member (102); further comprising: Adjusting the position of the Y-direction positioning mechanism (30) along the Y-direction so that the Y-direction positioning line laser (310) emitted by the second laser emitter (309) of the Y-direction positioning mechanism (30) is aligned with the second Y-direction marking line (1023); The second laser emitter (309) is driven to move along the Y direction by a preset Y distance (B), so that the Y positioning line laser (310) projects a Y theoretical positioning position on the second structural member (102).

5. The method for assembling and positioning a structural component according to claim 4, wherein: The step of assembling the first structural member (101) onto the second structural member (102) and adjusting the position so that the marking line on the first structural member (101) is aligned with the theoretical positioning position further comprises: Adjusting the X-direction position of the first structural member (101) so that the first X-direction calibration line (1012) is aligned with the X-direction theoretical positioning position; The Y-direction position of the first structural member (101) is adjusted so that the first Y-direction calibration line (1011) is aligned with the Y-direction theoretical positioning position.

6. The method for assembling and positioning a structural component according to claim 2, wherein: The first structural member (101) is a cylindrical member, and the second structural member (102) is provided with a first symmetrical central hole (1021) and a second symmetrical central hole (1022) spaced apart along the Y direction; The first X-direction marking line (1012) and the first Y-direction marking line (1011) are mutually perpendicular radial lines passing through the cylindrical center (1010) of the first structural member (101); the second X-direction marking line (1024) is a line connecting the centers of the first symmetrical center hole (1021) and the second symmetrical center hole (1022); and the second Y-direction marking line (1023) is a line of symmetry between the first symmetrical center hole (1021) and the second symmetrical center hole (1022).

7. The method for assembling and positioning a structural component according to claim 1, wherein: The X-direction positioning mechanism (20) comprises: An X-direction guide rail platform (201) is provided with an X-direction linear guide rail (202); An X-direction horizontal movement mechanism, comprising an X-direction horizontal slider (203) capable of sliding along the X-direction linear guide rail (202); A first upright column (205) extending vertically upward from the X-direction horizontal slider (203) and provided with a first vertical guide rail (206); A first vertical movement mechanism, comprising a first vertical slider (207) capable of sliding along the first vertical guide rail (206); A first laser emitter (209) is mounted on the first vertical slider (207) and is used to emit an X-direction positioning line laser (210) extending along the Y direction.

8. The method for assembling and positioning a structural component according to claim 7, characterized in that: The Y-direction positioning mechanism (30) comprises: A Y-direction linear guide rail (302) is provided on the Y-direction guide rail platform (301); A Y-direction horizontal movement mechanism, comprising a Y-direction horizontal slider (303) capable of sliding along the Y-direction linear guide rail (302); A second upright post (305) extends vertically upward from the Y-direction horizontal slider (303) and is provided with a second vertical guide rail (306); A second vertical movement mechanism, comprising a second vertical slider (307) capable of sliding along the second vertical guide rail (306); A second laser emitter (309) is mounted on the second vertical slider (307) and is used to emit a Y-direction positioning line laser (310) extending along the X direction.

9. The method for assembling and positioning a structural component according to claim 8, characterized in that: The X-direction linear guide rail (202), the Y-direction linear guide rail (302), the first vertical guide rail (206), and the second vertical guide rail (306) are all multiple parallel guide rails.

10. The method for assembling and positioning a structural component according to claim 8, wherein: The X-direction horizontal slider (203), the first vertical slider (207), the Y-direction horizontal slider (303) and the second vertical slider (307) are all rectangular sliders; And / or, the X-guide rail platform (201) and the Y-guide rail platform (301) are respectively provided with measurement scale lines along the length direction.

11. The method for assembling and positioning a structural component according to any one of claims 8 to 10, characterized in that: The X-direction horizontal movement mechanism includes an X-direction servo motor for driving the slider to reciprocate linearly along the X-direction, and the Y-direction horizontal movement mechanism includes a Y-direction servo motor for driving the slider to reciprocate linearly along the Y-direction.

12. The method for assembling and positioning a structural component according to claim 11, wherein: The positioning platform (40) includes a leveling mechanism for leveling the platform surface; And / or, the laser emitter is a laser marking device; And / or, the workpiece positioning device includes a PLC programming controller for controlling the X-direction servo motor and the Y-direction servo motor.

13. The method for assembling and positioning a structural component according to claim 1, wherein: The positioning mechanism also includes a Z-direction positioning mechanism arranged on the side of the positioning platform (40), the Z-direction positioning mechanism including a Z-direction column and a Z-direction laser emitter vertically movably mounted on the Z-direction column, the Z-direction laser emitter being used to emit a Z-direction positioning line laser extending along the XY plane direction.

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