A welding fixture positioning device base and welding fixture positioning device

Abstract

This disclosure provides a welding fixture positioning device base and a welding fixture positioning device. The base includes a seat, a first driving member, a positioning member, a second driving member, and a support member. The first driving member is connected to the seat and the positioning member, and is used to drive the positioning member to perform lifting and lowering movements. The positioning member is used to position and support the fixture reference frame when it is raised to a first position. The second driving member is connected to the seat and the support member, and is used to drive the support member to move to a second position to contact the positioning member when the positioning member is in the first position. This disclosure provides the positioning member with a supporting force to resist eccentric torque through the support member, changes the load transmission path, prevents the positioning member from shifting or bending due to uneven force, and improves positioning accuracy and service life.

Description

Technical Field

[0001] This disclosure relates to the field of automobile manufacturing technology, and in particular to a welding fixture positioning device base and a welding fixture positioning device. Background Technology

[0002] In the welding and assembly process of automobile manufacturing, the need for multiple models to be produced on the same production line requires frequent switching of welding fixtures. The welding fixture is mounted on a fixture reference frame, which is placed on a welding fixture positioning device base. This base mainly positions and supports the fixture reference frame to ensure the consistent and repeatable position of the welding robot during operation.

[0003] In related technologies, the base of a welding fixture positioning device typically includes a base body, a first driving component, and a positioning component. When the fixture reference frame moves to the positioning station, the first driving component drives the positioning component to rise to the first position, thereby achieving the positioning and support of the fixture reference frame.

[0004] However, due to the different centers of gravity of welding fixtures for different vehicle models, and the possible shift of the center of gravity during the welding process, the positioning components are under high load and subjected to eccentric torque for a long time, which can easily cause support shift or even bending. As a result, the positioning accuracy gradually decreases with the increase of usage time, affecting the quality of welding operations. Summary of the Invention

[0005] This disclosure provides a welding fixture positioning device base and a welding fixture positioning device. By adding a second driving member and a support member to the base, after the positioning member rises to the first position and completes the positioning of the fixture reference frame, the second driving member drives the support member to move to the second position and contact the positioning member. This provides support force to the positioning member to resist eccentric torque, preventing the positioning member from shifting or even bending due to uneven force, thereby improving positioning accuracy and service life. The technical solution is as follows: In a first aspect, this disclosure provides a welding fixture positioning device base, which includes a base body, a first driving member, a positioning member, a second driving member, and a support member; The first driving member is connected to the base and the positioning member respectively, and the first driving member is used to drive the positioning member to perform lifting and lowering movements; The positioning element is used to position and support the fixture reference frame when it is raised to the first position; The second driving member is connected to the base and the support member respectively. The second driving member is used to drive the support member to move to the second position and contact the positioning member when the positioning member is in the first position, so that the support member provides the positioning member with a supporting force to resist the eccentric torque.

[0006] In one possible implementation, the positioning element includes a positioning body and a supporting step; The supporting step is fixed to the side wall of the positioning body; When the support is in the second position, the support can abut against the lower surface of the bearing step, thereby limiting the positioning body in the vertical direction.

[0007] In one possible implementation, the positioning body is columnar, the bearing step is annular, and the bearing step is fixed to the outer peripheral wall of the positioning body.

[0008] In one possible implementation, the support member includes a locking section and an unlocking section connected together. The locking section has a locking hole, and when the support member is in the second position, the upper edge of the locking hole abuts against the lower surface of the bearing step. The unlocking section has an unlocking hole, which is used for the positioning body and the bearing step to pass through before the positioning member is raised to the first position.

[0009] In one possible implementation, the locking section and the unlocking section are connected horizontally, and the second driving member can drive the support member to move horizontally.

[0010] In one possible implementation, the locking hole is an oblong hole, and the unlocking hole is a round hole.

[0011] In one possible implementation, the base has a through hole extending in a vertical direction, the through hole being slidably connected to the positioning member, and the upper end of the base has a limiting groove extending in a horizontal direction, the limiting groove being slidably connected to the support member.

[0012] In one possible implementation, the base of the welding fixture positioning device further includes a wear-resistant bushing located between the inner wall of the through hole and the positioning element.

[0013] In one possible implementation, the welding fixture positioning device base further includes a controller; the controller is electrically connected to the first driving member and the second driving member.

[0014] Secondly, this disclosure provides a welding fixture positioning device, including a welding fixture positioning device base and a fixture reference frame provided by the first aspect or any possible implementation thereof.

[0015] The beneficial effects of the technical solution provided in this disclosure include at least the following: A second driving member is installed on the base, and the second driving member drives the support member to support the positioning member. After the positioning member rises to the first position and completes the positioning of the fixture reference frame, the support member moves to the second position and contacts the positioning member, establishing additional support for the positioning member. This changes the load transmission path, distributing the vertical load and eccentric moment originally borne independently by the positioning member to the support member. This prevents uneven force on the positioning member caused by different centers of gravity of welding fixtures for different vehicle models and the center of gravity shift during welding, thus preventing support shift or even bending. This improves positioning accuracy and service life.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of a welding fixture positioning device provided in an embodiment of this disclosure; Figure 2 This is a partial enlarged view of a welding fixture positioning device provided in an embodiment of this disclosure; Figure 3 This is a schematic diagram of the structure of the support member provided in the embodiments of this disclosure; Figure 4 This is a schematic diagram of the structure of the mounting base provided in the embodiments of this disclosure; Figure 5 This is an anatomical view of the mounting base provided in the embodiments of this disclosure; Figure 6 This is a schematic diagram of the controller provided in an embodiment of this disclosure; Figure 7 This is a schematic diagram of the structure of the welding fixture positioning device base and guide assembly provided in the embodiments of this disclosure; Figure 8 This is a bottom view of the fixture reference frame provided in the embodiments of this disclosure; Figure 9 This is a schematic diagram of the positioning component provided in an embodiment of this disclosure; Figure 10 This is a cross-sectional view of the positioning component, the first driving component, and the mounting base provided in the embodiments of this disclosure; Figure 11This is a schematic diagram of the second base unit and the structure mounted thereon provided in the embodiments of this disclosure; Figure 12 This is a schematic diagram of the structure of the clamping assembly and the pneumatic quick-connect assembly provided in the embodiments of this disclosure.

[0019] Figure label: 00. Base of welding fixture positioning device; 001, Base body; 0011, First base unit; 0012, Second base unit; 0013, First square steel; 0014, Second square steel; 0015, Mounting base; 00151, Through hole; 00152, Limiting groove; 0016, Mounting groove; 0017, Wear-resistant bushing; 002, First driving component; 003. Positioning component; 0031. Positioning body; 00311. Positioning pin; 00312. Support block; 00313. Conical section; 00314. Bearing step; 00315. First cylindrical section; 00316. Second cylindrical section; 004, Second driving component; 0041, Driving cylinder; 0042, Transmission component; 00421, First transmission rod; 00422, Second transmission rod; 005, Support component; 0051, Locking section; 00511, Locking hole; 0052, Unlocking section; 00521, Unlocking hole; 01. Fixture reference frame; 011, Positioning docking block; 0111, Positioning hole; 02. Guide assembly; 021. Outer guide rail; 022. Inner guide rail; 023. Guide block; 024. Outer guide wheel; 025. Inner guide wheel; 03. Limiting buffer assembly; 031. Limiting angle seat; 032. V-shaped limiting block; 0321. V-groove; 033. Buffer; 034. Limiting wheel; 04. Clamping assembly; 041. Clamping motor; 042. Clamping connecting block; 043. Clamping roller; 044. Limiting pressure plate; 05. Pneumatic quick-connect assembly; 051. Quick-connect angle bracket; 052. Quick-connect cylinder; 0521. Guide rod; 053. Quick-connect female connector; 054. Quick-connect male connector; 06. Controller; 07. First sensor; 08. Second sensor; 09. Third sensor; 10. Fourth sensor; 11. The fifth sensor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other. This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Understandably, in the welding and assembly process of automobile manufacturing, in order to meet the requirements of co-line production of multiple models, it is usually necessary to frequently switch welding fixtures suitable for different models. The existing positioning part 003 is subject to eccentric torque, which may cause it to shift or even bend, resulting in a gradual decrease in positioning accuracy as the usage time increases, affecting the quality of subsequent welding operations.

[0023] This disclosure provides a welding fixture positioning device base, referring to... Figure 1 The welding fixture positioning device base 00 includes a base body 001, a first driving member 002, a positioning member 003, a second driving member 004, and a support member 005. The first driving member 002 is connected to the base body 001 and the positioning member 003, and is used to drive the positioning member 003 to perform lifting and lowering movements. The positioning member 003 is used to position and support the fixture reference frame 01 when it is raised to the first position. The second driving member 004 is connected to the base body 001 and the support member 005, and is used to drive the support member 005 to move to the second position and contact the positioning member 003 when the positioning member 003 is in the first position, so that the support member 005 provides a supporting force against the eccentric torque for the positioning member 003.

[0024] In some examples, refer to Figure 7 The base body 001 may include a first base unit 0011 and a second base unit 0012 arranged symmetrically from left to right. The first base unit 0011 and the second base unit 0012 are two independent structures. The first base unit 0011 and the second base unit 0012 can be fixedly connected by a first square steel 0013 and a second square steel 0014. Optionally, the first base unit 0011 and the second base unit 0012 have the same structure, and the first square steel 0013 and the second square steel 0014 have the same structure.

[0025] Since the first base unit 0011, the second base unit 0012, the first square steel 0013 and the second square steel 0014 all adopt symmetrical or identical structural designs, when upgrading equipment on the production line or performing partial maintenance on specific models, operators can quickly modularly disassemble and assemble the corresponding first drive component 002, positioning component 003 or support component 005, reducing spare parts management costs and downtime maintenance time.

[0026] For example, in order to improve the support stability and load-bearing capacity of large welding fixtures, in this embodiment of the disclosure, the number of first driving members 002 is set to four, the number of positioning members 003 is correspondingly set to four, the second driving member 004 may include two driving cylinders 0041 and two transmission members 0042, and the number of support members 005 is correspondingly set to four. Two of the first driving members 002 are spaced apart on the first base unit 0011, and the other two first driving members 002 are spaced apart on the second base unit 0012. The positioning components 003 are arranged in a matrix. The power output end of the first driving component 002 is connected to the positioning component 003 in a one-to-one correspondence. One driving cylinder 0041 is set on the first base unit 0011, and another driving cylinder 0041 is set on the second base unit 0012. The driving cylinder 0041 is connected to the transmission component 0042 in a one-to-one correspondence. The transmission component 0042 located on the first base unit 0011 is connected to two support components 005, and the transmission component 0042 located on the second base unit 0012 is connected to two other support components 005.

[0027] Correspondingly, refer to Figure 8 The fixture reference frame 01 has four positioning docking blocks 011, which are respectively corresponding to the positioning element 003.

[0028] The first driving component 002 and the driving cylinder 0041 are both linear driving mechanisms, including but not limited to cylinders, hydraulic cylinders and other structures.

[0029] In this embodiment, after the fixture reference frame 01 enters the positioning station, the device base executes the following action logic: four first driving members 002 located on the first base unit 0011 and the second base unit 0012 are simultaneously activated, driving four positioning members 003 to rise vertically upwards. The four positioning members 003 simultaneously contact the four positioning docking blocks 011 and lift the fixture reference frame 01 to the first position, completing the support and positioning of the fixture reference frame 01. After confirming that the positioning members 003 have reached the first position, two driving cylinders 0041 located on the first base unit 0011 and the second base unit 0012 are simultaneously triggered. The two driving cylinders 0041, through the transmission members 0042 connected to them, drive the two support members 005 located on their corresponding first base unit 0011 and second base unit 0012 to move until the support members 005 reach the second position and physically abut against the positioning members 003 to achieve support.

[0030] Two first driving members 002 are respectively arranged at intervals on the first base unit 0011 and the second base unit 0012, and four positioning members 003 are arranged in a matrix. Together with the four positioning docking blocks 011 of the fixture reference frame 01, a multi-point distributed load-bearing structure is constructed. In implementation, this layout can ensure that the load distribution of each positioning docking block 011 is balanced during the process of the fixture reference frame 01 being lifted to the first position, and the force on each force point is within a controllable range, thus extending the service life of the positioning members 003. When the driving cylinder 0041 drives the support member 005 to move to the second position through the transmission member 0042 and physically abuts against the positioning member 003, the vertical load originally borne independently by the piston rod of the first driving member 002 and the lateral shear force generated by eccentricity are transmitted to the first base unit 0011 and the second base unit 0012 through the physical abutment of the support member 005, reducing the pressure on the internal structure of the first driving member 002 and the positioning member 003. The abnormal wear and tear between components extends the service life of the positioning component 003, ensuring positioning accuracy in multi-vehicle switching scenarios. The drive cylinder 0041 is connected to the two support components 005 through the transmission component 0042. The mechanical rigidity constraint of the transmission component 0042 replaces the electronic synchronization control system. This not only ensures that the two support components 005 located on the same side of the base unit achieve physical synchronization in terms of action sequence, avoiding stress concentration in the local support components 005 due to differences in action sequence, but also reduces the number of power sources and sensors, reduces the wiring difficulty and overall failure rate inside the welding fixture positioning device base 00, and improves the operational reliability of the welding fixture positioning device base.

[0031] In some examples, refer to Figure 2 The positioning component 003 includes a positioning body 0031 and a load-bearing step 00314; The supporting step 00314 is fixed to the side wall of the positioning body 0031; When the support member 005 is in the second position, the support member 005 can abut against the lower surface of the bearing step 00314, thereby limiting the positioning body 0031 in the vertical direction.

[0032] In some examples, refer to Figure 8 , 9 10. The positioning body 0031 is columnar, and the bearing step 00314 is ring-shaped. The bearing step 00314 is fixed to the outer peripheral wall of the positioning body 0031.

[0033] The four rectangularly distributed positioning components 003 are divided into two positioning pins 00311 arranged diagonally on the first side and two support blocks 00312 arranged diagonally on the second side. For the positioning pins 00311, from top to bottom, they are sequentially divided into: a conical segment 00313 for guiding positioning; a bearing step 00314 for axial positioning in conjunction with the support component 005; a first cylindrical segment 00315 for radial positioning in conjunction with the support component 005; and a second cylindrical segment 00316 for connection with the first driving component 002. For the support blocks 00312, from top to bottom, they are divided into: a bearing step 00314 for axial positioning in conjunction with the support component 005; a first cylindrical segment 00315 for radial positioning in conjunction with the support component 005; and a second cylindrical segment 00316 for connection with the first driving component 002.

[0034] In some examples, the outer diameter of the bearing step 00314 is larger than the outer diameter of the first cylindrical segment 00315, and the outer diameter of the first cylindrical segment 00315 is smaller than the outer diameter of the second cylindrical segment 00316. Correspondingly, the bottom surfaces of the four positioning docking blocks 011 provided at the bottom of the fixture reference frame 01 respectively abut against the upper end surfaces of the bearing steps 00314 of the four positioning members 003, wherein the bottom surfaces of two positioning docking blocks 0111 have positioning holes 0111 in the middle for mating with the conical segment 00313. The support member 005 has an upper surface for abutting against the bearing step 00314.

[0035] After the fixture reference frame 01 enters the positioning station, the four first driving components 002 drive the two rectangularly distributed positioning pins 00311 and two support blocks 00312 to rise synchronously. During the lifting process, the conical segment 00313 at the top of the positioning pin 00311 first extends into the positioning hole 0111 of the corresponding positioning docking block 011 at the bottom of the fixture reference frame 01. Utilizing the oblique guiding effect of the conical surface of the conical segment 00313, the slight positional deviation of the fixture reference frame 01 in the horizontal plane is corrected. As the first driving components 002 continue to lift, the four positioning pins 00311 and two support blocks 00312 move upward simultaneously. The bottom surface of the positioning block 011 physically abuts against the upper surface of the corresponding bearing step 00314. At this time, the vertical height of the fixture reference frame 01 is initially determined, completing the initial axial positioning. After confirming that all four positioning members 003 have reached the first position, the second driving member 004 drives the four supporting members 005 to move. The upper surface of the supporting member 005 moves to below the corresponding bearing step 00314. When the supporting member 005 reaches the second position, the upper surface of the supporting member 005 rigidly abuts against the lower surface of the bearing step 00314. At this time, the bearing step 00314 is clamped between the positioning block 011 and the supporting member 005 of the fixture reference frame 01.

[0036] The positioning pin 00311 is divided into a conical segment 00313, a bearing step 00314, a first cylindrical segment 00315, and a second cylindrical segment 00316, enabling a single component to simultaneously perform three functions: positioning guidance, vertical bearing, and radial limiting. This integrated and simple structure reduces the structural complexity of the welding fixture positioning device base 00. Furthermore, because all functional segments are coaxial, it reduces the cumulative error caused by multi-part assembly, improves the repeatability of the welding fixture's positioning accuracy, and facilitates maintenance. When the support member 005 abuts against the lower surface of the bearing step 00314, the upper end face of the bearing step 00314 supports the positioning docking block 011. In the vertical direction, the positioning docking block 011, the bearing step 00314, and the support member 005 form a rigid force transmission chain. The axial impact or pressure load generated during welding can be directly transmitted to the base 001 through the aforementioned force transmission chain, avoiding direct transmission to the first drive component 002 through the positioning pins 00311 and support blocks 00312. This prevents the positioning body 0031 connected to the first drive component 002 from vertical elastic retreat or vibration during welding operations, ensuring welding accuracy. The two positioning pins 00311, distributed diagonally in the first direction, provide guidance, positioning, and support, and work in conjunction with the two support blocks 00312, distributed diagonally in the second direction, to construct a stable four-point bearing plane. This ensures that the load distribution at the four stress points at the bottom of the large fixture is balanced during frequent switching and operation, and from a physical structure perspective, avoids wear of the positioning component 003 caused by local stress concentration, thus extending the service life of the welding fixture positioning device base 00.

[0037] In some examples, refer to Figure 3 , 10 The support member 005 includes a locking section 0051 and an unlocking section 0052 connected together. The locking section 0051 has a locking hole 00511. When the support member 005 is in the second position, the upper edge of the locking hole 00511 abuts against the lower surface of the bearing step 00314. The unlocking section 0052 has an unlocking hole 00521. Before the positioning member 003 is raised to the first position, the unlocking hole 00521 is used for the positioning body 0031 and the bearing step 00314 to pass through.

[0038] In some examples, the support 005 has a cuboid structure, and the locking section 0051 and the unlocking section 0052 are arranged sequentially along the displacement direction of the support 005 (i.e., the length direction of the cuboid). The diameter of the locking hole 00511 is smaller than the outer diameter of the bearing step 00314, and the diameter of the locking hole 00511 is adapted to the shaft diameter of the first cylindrical section 00315 in the positioning body 0031. The diameter of the unlocking hole 00521 is larger than the outer diameter of the bearing step 00314, and the locking hole 00511 and the unlocking hole 00521 are smoothly connected.

[0039] In this embodiment, before the positioning member 003 begins to move, the second driving member 004 drives the support member 005 to the initial position. At this time, the unlocking section 0052 is located directly above the positioning member 003, that is, the axis of the unlocking hole 00521 coincides with the axis of the positioning body 0031. Since the diameter of the unlocking hole 00521 is larger than the outer diameter of the bearing step 00314, when the first driving member 002 drives the positioning body 0031 to rise, the positioning body 0031 and the bearing step 00314 on its sidewall can smoothly pass through the unlocking hole 00521 and continue to rise until the positioning body 0031 reaches the first position. During this process, the support member 005 does not physically interfere with the lifting and lowering movement of the positioning member 003. After confirming that the positioning member 003 has reached the first position and the lower surface height of the bearing step 00314 exceeds the upper surface height of the support member 005, the second driving member 004 starts... When the second driving member 004 drives the support member 005 to move, since the locking hole 00511 is connected to the unlocking hole 00521, the first cylindrical segment 00315 in the positioning body 0031 moves relative to the locking hole 00511 from the inside of the unlocking hole 00521 along the connection. As the support member 005 moves to the second position, the hole wall of the locking hole 00511 is fitted around the outer periphery of the first cylindrical segment 00315. Since the hole diameter of the locking hole 00511 is adapted to the shaft diameter of the first cylindrical segment 00315, the locking hole 00511 forms a radial constraint on the positioning body 0031. At the same time, since the hole diameter of the locking hole 00511 is smaller than the outer diameter of the bearing step 00314, the upper edge of the locking hole 00511 moves to directly below the lower surface of the bearing step 00314 and physically abuts against it. Thus, the positioning member 003 is rigidly supported by the support member 005 in the vertical direction.

[0040] The locking hole 00511 and the unlocking hole 00521 are connected and arranged sequentially along the displacement direction, so that the positioning body 0031 can use the same spatial channel to switch between the initial position and the second position, ensuring the overall compactness of the mechanism; when the support member 005 moves to the second position and abuts, the support member 005 provides a uniform annular support force for the bearing step 00314 through the upper edge of the locking hole 00511. For example, when facing the enormous gravity or eccentric moment generated by a large welding fixture, the load can be directly transmitted to the locking section 0051 of the support 005 through the lower surface of the bearing step 00314. This surface contact reduces the contact pressure, effectively preventing fatigue settlement of the positioning body 0031 in the vertical direction, and avoiding the positioning part 003 from bearing the load of the welding fixture alone, thus preventing damage to the positioning part 003 by the eccentric moment and ensuring that the height of the bearing step 00314 of each positioning part 003 remains constant during the welding operation. The diameter of the locking hole 00511 is adapted to the shaft diameter of the first cylindrical section 00315, providing radial stability for the positioning body 0031 in the locked state and avoiding lateral displacement caused by welding vibration. At the same time, the smooth connecting hole design ensures that the reciprocating movement of the support 005 is free from the risk of mechanical collision with the positioning body 0031.

[0041] In some examples, locking section 0051 and unlocking section 0052 are connected horizontally, and second drive member 004 can drive support member 005 to move horizontally.

[0042] In some examples, refer to Figure 7 The driving cylinder 0041 of the second driving member 004 is disposed on the upper end surface of the first base unit 0011 and is located between the two first driving members 002. The corresponding transmission member 0042 is the first transmission rod 00421, and the two ends of the first transmission rod 00421 are respectively connected to the two support members 005 located on the first base unit 0011. The driving cylinder 0041 of the other second driving member 004 is disposed on the upper end surface of the second base unit 0012 and is located between the two first driving members 002. The corresponding transmission member 0042 is the second transmission rod 00422, and the two ends of the second transmission rod 00422 are respectively connected to the two support members 005 located on the second base unit 0012.

[0043] In this embodiment, four first driving members 002 synchronously drive their corresponding positioning members 003 to rise to the first position. At this time, the lower surface height of the bearing step 00314 on the positioning member 003 is slightly higher than the upper surface height of the support member 005, leaving a vertical gap for the subsequent translational movement of the support member 005. The driving cylinder 0041 located on the first base unit 0011 receives the action command and drives its piston rod to move horizontally, and transmits the power synchronously to the two support members 005 at both ends through the first transmission rod 00421, and the two support members 005 translate synchronously. Similarly, the horizontal driving cylinder 0041 located on the second base unit 0012 drives its corresponding two support members 005 to perform the same translation through the second transmission rod 00422. As the support member 005 translates from its initial position to the second position, the locking hole 00511 in the locking section 0051 slides in and surrounds the outside of the first cylindrical section 00315. The first driving member 002 lowers the positioning member 003 to the upper edge of each support member 005 and abuts against the lower surface of the corresponding bearing step 00314.

[0044] Since the second driving component 004 only generates horizontal displacement during operation and does not have a vertical displacement component, after the support component 005 cuts into and supports the positioning component 003, the support component 005 will not jump or float vertically due to slight fluctuations or elastic retraction of the driving mechanism. This ensures that the vertical height of the positioning component 003 remains constant under the support of the support component 005, avoiding the support instability or height drift problems that are prone to occur in inclined climbing mechanisms. Placing the horizontal driving cylinder 0041 between the two first driving components 002 improves the space utilization of the welding fixture positioning device base 00, making the overall size of the welding fixture positioning device base 00 smaller, providing sufficient leeway for subsequent installation of sensors or protective covers, and improving the versatility of the welding fixture positioning device base 00 in automated production lines.

[0045] In some examples, refer to Figure 3 The locking hole 00511 is an oblong hole, and the unlocking hole 00521 is a round hole.

[0046] Since the positioning body 0031 and its supporting step 00314 are designed as a ring structure, and the locking hole 00511 is designed as an oblong hole, it can ensure that at the second position, the ring edge of the locking hole 00511 and the lower surface of the supporting step 00314 form a surface contact with the maximum area, which can provide a balanced and stable vertical support force.

[0047] In some examples, the base 001 has a through hole 00151 extending in the vertical direction, which is slidably connected to the positioning member 003, and the upper end of the base 001 has a limiting groove 00152 extending in the horizontal direction, which is slidably connected to the support member 005.

[0048] In some examples, refer to Figure 4 The base 001 specifically includes a first base unit 0011, a second base unit 0012, and four mounting seats 0015. The first base unit 0011 and the second base unit 0012 each have two mounting slots 0016. Each mounting seat 0015 has a through hole 00151 and a limiting slot 00152. The through hole 00151 is a circular through hole that penetrates the center of the mounting seat 0015 vertically. The limiting slot 00152 is located on the upper surface of the mounting seat 0015. The mounting seats 0015 are mounted to the upper edge of the mounting slots 0016 using bolts. A first driving member 002 is installed inside the cavity of the mounting slots 0016. The through hole 00151 in the mounting seat 0015 is axially aligned with the power output end of the first driving member 002 in the vertical direction.

[0049] In this implementation, when the first driving member 002 is activated and drives the positioning member 003 to rise, the side wall of the positioning member 003 slides in conjunction with the inner wall of the through hole 00151 in the mounting base 0015. After confirming that the positioning member 003 is in place, the second driving member 004 is activated, and the support member 005 moves along the limiting groove 00152 on the upper surface of the mounting base 0015 under the action of horizontal thrust. The side wall of the limiting groove 00152 provides horizontal guidance for the support member 005.

[0050] In some examples, refer to Figure 5 The welding fixture positioning device base 00 also includes a wear-resistant bushing 0017, which is located between the inner wall of the through hole 00151 and the positioning element 003.

[0051] A wear-resistant bushing 0017 is added between the mounting base 0015 and the positioning component 003 to prevent the positioning component 003 from crawling or getting stuck during the lifting process. The wear-resistant bushing 0017 is a replaceable part. After long-term operation, if the guiding accuracy decreases, the operator only needs to press the worn wear-resistant bushing 0017 out of the through hole 00151 and replace it with a new part, without having to replace or repair the mounting base 0015. This shortens the downtime of the equipment and ensures the continuous operation capability of the production line.

[0052] In a second aspect, this disclosure provides a welding fixture positioning device, including a welding fixture positioning device base 00 and a fixture reference frame 01 provided by the first aspect or any possible implementation thereof.

[0053] In some embodiments, the welding fixture positioning device further includes: a guide assembly 02, a limiting buffer assembly 03, a clamping assembly 04, and a pneumatic quick-connect assembly 05.

[0054] In some examples, refer to Figure 7 , 8 The guide assembly 02 includes two parallel outer guide rails 021, two parallel inner guide rails 022, four guide blocks 023, several outer guide wheels 024, several inner guide wheels 025, and a corresponding number of rotating bearings.

[0055] For example, in order to ensure the force balance of the heavy-duty clamp, the number of outer guide wheels 024 is set to four (i.e., two on each side), the number of inner guide wheels 025 is set to four (i.e., two on each side), the inner guide rail 022 and the outer guide rail 021 are both rigid slide rail structures extending in a straight line, and the number of guide blocks 023 is set to four, which are respectively set to correspond one-to-one with the starting ends of the two inner guide rails 022 and the two outer guide rails 021.

[0056] Two outer guide rails 021 are symmetrically fixed to the ground and located on the left and right sides of the base 001. Two inner guide rails 022 are symmetrically and horizontally fixed on the opposite side walls of the first base unit 0011 and the second base unit 0012. The inner guide rails 022 and the outer guide rails 021 are parallel to each other, thus creating independent straight guide paths between the base 001 and the outer guide rails 021, and between the two inner guide rails 022. Four guide blocks 023 are fixed to the starting ends of the corresponding inner guide rails 022 and outer guide rails 021, forming a trumpet shape that opens obliquely from the center outwards. Four outer guide wheels 024 are rotatably connected to the outer side wall of the fixture reference frame 01 through rotating bearings. Four inner guide wheels 025 are rotatably connected to the bottom of the fixture reference frame 01 through corresponding rotating bearings. The bottom of the fixture reference frame 01 is provided with several universal wheels, which are located between the outer guide wheels 024 and the inner guide wheels 025.

[0057] In this implementation, when the fixture reference frame 01 moves toward the seat 001 under the drive of external power (such as a conveyor line or traction mechanism), multiple casters at the bottom of the fixture reference frame 01 roll on the ground. As the fixture reference frame 01 moves toward the positioning station, the outer guide wheel 024 or inner guide wheel 025 set at the front end of the fixture reference frame 01 will first contact the corresponding guide block 023. Using the guiding thrust generated by the flared inclined surface of the guide block 023, it is guided to smoothly enter the guide channel composed of two inner guide rails 022 and two outer guide rails 021. After the fixture reference frame 01 enters the constraint area of ​​the inner guide rail 022 and the outer guide rail 021, the four outer guide wheels 024 set on the outer side wall of the fixture reference frame 01 contact the side wall surfaces of the two outer guide rails 021 respectively, and the four inner guide wheels 025 set at the bottom of the fixture reference frame 01 contact the side wall surfaces of the two inner guide rails 022 respectively. During the sliding movement, the casters continuously support the vertical load in the gap area between the outer guide wheels 024 and the inner guide wheels 025, while the four outer guide wheels 024 and the four inner guide wheels 025 provide linear guidance for the fixture reference frame 01 to the positioning station.

[0058] In some examples, refer to Figure 8 , 11 The limiting and buffering assembly 03 includes a limiting angle seat 031, a V-shaped limiting block 032, a buffer 033, and limiting wheels 034 mounted on the fixture reference frame 01. Multiple limiting angle seats 031 are provided (exemplarily, two are provided), two V-shaped limiting blocks 032 are provided, each V-shaped limiting block 032 having a V-shaped groove 0321 formed by two inclined limiting surfaces, two buffers 033 are provided, specifically damping buffers 033, and two limiting wheels 034 are provided.

[0059] Two limiting angle seats 031 are fixedly installed at the rear ends of the first base unit 0011 and the second base unit 0012, respectively. Two V-shaped limiting blocks 032 are fixed on the corresponding limiting angle seats 031, and the opening direction of their V-shaped grooves 0321 faces the sliding direction of the fixture reference frame 01. Two buffers 033 are installed on the limiting angle seats 031 in the front-rear direction, and the buffer extension end of each buffer 033 is located on one side of the V-shaped limiting block 032. In terms of spatial position, the buffer extension end of the buffer 033 protrudes relative to the V-shaped groove 0321 of the V-shaped limiting block 032. Two limiting wheels 034 are fixedly installed at the rear ends of the fixture reference frame 01, respectively.

[0060] In this implementation, the two limiting wheels 034 located at the rear end of the fixture reference frame 01 translate with the fixture reference frame 01. Since the buffer telescopic end of the buffer 033 protrudes relative to the V-groove 0321 of the V-shaped limiting block 032, the fixture reference frame 01 first contacts the buffer telescopic end of the damping buffer 033. As the fixture reference frame 01 continues to move, it overcomes the damping force and pushes the buffer telescopic end to retract backward. The energy absorption characteristics of the damping buffer 033 are used to achieve smooth reduction of the fixture reference frame 01. When the buffer telescopic end is compressed to its limit position, the limiting wheel 034 enters the V-groove 0321 of the V-shaped limiting block 032. Utilizing the opening structure of the V-groove 0321, which is composed of two inclined surfaces, the limiting wheel 034 is squeezed and guided by the inclined surfaces during its forward movement. If there is a slight lateral center deviation in the fixture reference frame 01, the limiting wheel 034 will move towards the bottom center of the V-groove 0321, thereby forcibly correcting the front end position of the fixture reference frame 01 until the limiting wheel 034 enters the bottom of the V-groove 0321.

[0061] In some examples, refer to Figure 8 , 12 The clamping assembly 04 includes a clamping motor 041, a clamping connecting block 042, a clamping roller 043, and a limiting pressure plate 044. The clamping motor 041 is fixedly installed on the upper end face of the second square steel 0014. The power output end of the clamping motor 041 is fixedly connected to the clamping connecting block 042 to drive the clamping connecting block 042 to rotate. The clamping roller 043 is rotatably mounted on the clamping connecting block 042 via a shaft pin. The limiting pressure plate 044 is fixedly installed on the front side wall of the fixture reference frame 01.

[0062] Upon receiving a start command, the clamping motor 041 drives the clamping connecting block 042 to oscillate in a horizontal plane. As the clamping connecting block 042 rotates, the clamping roller 043 mounted on it moves along a preset arc trajectory toward the fixture reference frame 01. When the clamping connecting block 042 rotates to a certain angle, the clamping roller 043 abuts against the limiting pressure plate 044 mounted on the front side wall of the fixture reference frame 01 from back to front. The clamping motor 041 continuously outputs torque, applying pressure to the limiting pressure plate 044 through the clamping connecting block 042. Using this pressure, the clamping assembly 04 firmly presses the fixture reference frame 01 forward, further pressing it against the V-shaped limiting block 032, thereby completing the clamping and fixing of the fixture reference frame 01 on the horizontal plane. At this time, the fixture reference frame 01 is in a stationary, waiting-to-be-positioned state.

[0063] In some examples, refer to Figure 8 , 12The pneumatic quick-connect assembly 05 includes a quick-connect angle bracket 051, a quick-connect cylinder 052, a quick-connect female connector 053, and a quick-connect male connector 054. Specifically, the quick-connect cylinder 052 is a quick-connect cylinder 052 with two guide rods 0521. The two guide rods 0521 are located on both sides of a piston rod, and the piston rod and the two guide rods 0521 are arranged parallel to each other. The quick-connect female connector 053 is fixed to the end of the piston rod and the ends of the two guide rods 0521. The quick-connect female connector 053 integrates multiple conductive contacts for transmitting electrical energy or signals. The quick-connect male connector 054 is compatible with the quick-connect female connector 053.

[0064] The quick-connect angle bracket 051 is fixedly installed at the middle of the upper end face of the second square steel 0014 in the base body 001. The quick-connect cylinder 052 is fixedly installed on the quick-connect angle bracket 051. The drive axis of the quick-connect cylinder 052 points to the fixture reference frame 01. The quick-connect female head 053 is fixedly connected to the output end of the piston rod and the two guide rods 0521. The quick-connect male head 054 is fixedly installed at the front end of the fixture reference frame 01. When the fixture reference frame 01 is in the positioning position, the quick-connect male head 054 is directly opposite the quick-connect female head 053.

[0065] In some examples, refer to Figure 6 The welding fixture positioning device also includes a controller 06; the controller 06 is electrically connected to the first drive component 002 and the second drive component 004.

[0066] In some examples, refer to Figure 7 , 11 The welding fixture positioning device also includes a first sensor 07, a second sensor 08, a third sensor 09, a fourth sensor 10, and a fifth sensor 11.

[0067] The first sensor 07 is specifically a proximity switch for detecting whether the fixture reference frame 01 has entered the positioning position. The first sensor 07 is fixedly installed on the limiting angle seat 031 at the front end of the first base unit 0011 and is located near the first V-shaped limiting block 032. The second sensor 08 is specifically a proximity switch for detecting whether the fixture reference frame 01 has entered the positioning position. The second sensor 08 is fixedly installed on the limiting angle seat 031 at the front end of the second base unit 0012 and is located near the second V-shaped limiting block 032. The third sensor 09 is specifically a positioning sensor switch for detecting whether the positioning component 003 has been lifted into place. There are four third sensors 09, and the four third sensors 09 are respectively installed on one side of the four positioning components 003. The fourth sensor... Specifically, sensor 10 is a positioning switch used to confirm whether the quick-connect female connector 053 and quick-connect male connector 054 are properly inserted; the fourth sensor 10 is fixedly installed on the mating end face of the quick-connect female connector 053 or quick-connect male connector 054; the fifth sensor 11 is specifically a vehicle model identification sensor. For example, the fifth sensor 11 can be a radio frequency identification sensor, a feature coding sensor, or a photoelectric scanning sensor. The fifth sensor 11 is set on the second square steel 0014, facing the front end of the fixture reference frame 01. The front end of the fixture reference frame 01 has information provided for the fifth sensor 11 to identify. This information includes, but is not limited to, the vehicle model code corresponding to the current fixture reference frame 01, the welding program version number corresponding to the vehicle model, the identification serial number of the welding fixture, and a logic check code used for error prevention verification. The first sensor 07, the second sensor 08, the third sensor 09, the fourth sensor 10, and the fifth sensor 11 are all electrically connected to the controller 06.

[0068] The workflow of this disclosure is as follows: Driven by an external power mechanism, the fixture reference frame 01 moves toward the positioning station. Multiple casters at the bottom of the fixture reference frame 01 roll on the ground, bearing the vertical load of the fixture reference frame 01. When the fixture reference frame 01 approaches the base 001, the outer guide wheel 024 and inner guide wheel 025 at the front end of the fixture reference frame 01 first contact the corresponding guide block 023 in the guide assembly 02. Using the guiding thrust generated by the flared inclined surface of the guide block 023, the travel trajectory of the fixture reference frame 01 is forcibly corrected, guiding it smoothly into the straight guide channel composed of two inner guide rails 022 and two outer guide rails 021.

[0069] Two limiting wheels 034, located at the rear end of the fixture reference frame 01, move synchronously with the frame. The buffer extension end of the buffer 033 protrudes relative to the V-shaped limiting block 032. The fixture reference frame 01 first contacts the buffer extension end of the damping buffer 033 and overcomes the damping force to achieve smooth deceleration. Immediately afterwards, the limiting wheels 034 enter the V-groove 0321 of the V-shaped limiting block 032. The inclined surface of the V-groove 0321 squeezes and guides the limiting wheels 034, correcting the front end posture of the fixture reference frame 01. When the limiting wheels 034 enter the bottom of the V-groove 0321, the first sensor 07 and the second sensor 08 are triggered simultaneously, sending a position signal to the controller 06. After receiving the positioning signal, the controller 06 immediately commands the clamping motor 041 of the clamping assembly 04 to start. The power output end of the clamping motor 041 drives the clamping connecting block 042 to rotate and swing in the horizontal plane, which in turn drives the clamping roller 043 mounted on it to move towards the fixture reference frame 01.

[0070] The clamping roller 043 abuts against the limiting pressure plate 044 mounted on the front end face of the fixture reference frame 01 from back to front. The clamping motor 041 continuously outputs torque, applying pressure to the limiting pressure plate 044 through the clamping connecting block 042. This pressure pushes the fixture reference frame 01 forward, making it further close to the V-shaped limiting block 032. At this point, the fixture reference frame 01 is fixed in the horizontal plane and is in a static, positioning state. After pre-clamping is completed, the controller 06 commands the four first drive units 002 located on the first base unit 0011 and the second base unit 0012 to start synchronously. The first drive units 002 drive the two positioning pins 00311 and the two support blocks 00312, which are arranged in a rectangular shape, to rise vertically upwards in sync. At this time, the unlocking hole 00521 is located directly above the positioning member 003. The positioning member 003 and the bearing step 00314 on its side wall smoothly pass through the unlocking hole 00521. During the lifting process, the conical section 00313 at the top of the positioning pin 00311 first extends into the positioning hole 0111 of the corresponding positioning docking block 011 at the bottom of the fixture reference frame 01, correcting the horizontal deviation.

[0071] As the lifting continues, the bottom surfaces of the four positioning docking blocks 011 abut against the upper surfaces of the corresponding bearing steps 00314 on the four positioning components 003. As the positioning components 003 continue to lift and support the clamp reference frame 01, causing it to lift off the ground and rise to the first position, the clamp reference frame 01 undergoes vertical displacement. At this time, the clamping rollers 043, which are in a pressing state, roll vertically on the surface of the limiting pressure plate 044. Simultaneously, the limiting wheels 034, which are in abutment state, also roll vertically within the V-groove 0321 of the V-shaped limiting block 032, until the positioning component 003 moves to the first position. At this point, the four third sensors 09 located on one side of the positioning component 003 send a positioning signal to the controller 06. After confirming that the positioning component 003 has reached the first position and the lower surface height of the bearing step 00314 exceeds the upper surface height of the support component 005, the controller 06 instructs the two second driving components 004 to start. The driving cylinders 0041 located on the first base unit 0011 and the second base unit 0012 drive the corresponding first transmission rod 00421 and second transmission rod 00422, causing the four support components 005 connected to their two ends to slide horizontally. Since the locking hole 00511 and the unlocking hole 00521 are smoothly connected, the first cylindrical segment 00315 in the positioning body 0031 exits through the unlocking hole. 00521 moves relative to the locking hole 00511, the support member 005 moves to the second position, the hole wall of the locking hole 00511 is fitted around the outer periphery of the first cylindrical section 00315 to form a radial constraint, and the upper edge of the locking hole 00511 moves to directly below the lower surface of the bearing step 00314. Subsequently, the first driving member 002 retracts slightly, so that the upper surface of the support member 005 abuts against the lower surface of the bearing step 00314. At this time, the bearing step 00314 is firmly clamped between the positioning docking block 011 and the support member 005, forming a rigid force transmission chain.

[0072] After mechanical positioning and locking are completed, the controller 06 triggers the fifth sensor 11 and the pneumatic quick-connect assembly 05. The fifth sensor 11 reads the identification information carried at the front end of the fixture reference frame 01 and feeds the information back to the controller 06, which then calls the matching welding robot program. The quick-connect cylinder 052 in the pneumatic quick-connect assembly 05 is activated, driving the quick-connect female head 053 to extend along the guide rod 0521 towards the fixture reference frame 01 and connect with the quick-connect male head 054 installed at the front end of the frame. When the fourth sensor 10 senses that the quick-connect is in place, the pneumatic quick-connect interface is officially connected to the power air source and electrical signal. At this point, the welding fixture positioning device is fully ready for operation, and the welding robot will then perform welding operations according to the identified program version.

[0073] The technical solution provided by this disclosure includes at least the following beneficial effects: A second driving member 004 is provided on the base 001, and the second driving member 004 drives the support member 005 to support the positioning member 003. After the positioning member 003 rises to the first position and completes the positioning of the fixture reference frame 01, the support member 005 moves to the second position and contacts the positioning member 003, establishing additional support for the positioning member 003. This changes the load transmission path, transferring the vertical load and eccentric moment originally borne independently by the positioning member 003 to the support member 005. This prevents uneven force on the positioning member 003 caused by the different centers of gravity of welding fixtures for different vehicle models and the center of gravity shift that occurs during welding, thus preventing support shift or even bending. This ensures positioning accuracy in multi-vehicle switching scenarios.

[0074] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0075] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0076] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0077] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0078] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0079] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A base for a welding fixture positioning device, characterized in that, It includes a base (001), a first driving member (002), a positioning member (003), a second driving member (004), and a support member (005); The first driving member (002) is connected to the seat (001) and the positioning member (003) respectively, and the first driving member (002) is used to drive the positioning member (003) to perform lifting and lowering movements; The positioning element (003) is used to position and support the fixture reference frame (01) when it is raised to the first position; The second driving member (004) is connected to the seat (001) and the support member (005) respectively. The second driving member (004) is used to drive the support member (005) to move to the second position and contact the positioning member (003) when the positioning member (003) is in the first position, so that the support member (005) provides the positioning member (003) with a supporting force to resist the eccentric torque.

2. The base of the welding fixture positioning device according to claim 1, characterized in that, The positioning component (003) includes a positioning body (0031) and a bearing step (00314). The bearing step (00314) is fixed to the side wall of the positioning body (0031); When the support member (005) is in the second position, the support member (005) can abut against the lower surface of the bearing step (00314), thereby limiting the positioning body (0031) in the vertical direction.

3. The base of the welding fixture positioning device according to claim 2, characterized in that, The positioning body (0031) is columnar, the bearing step (00314) is annular, and the bearing step (00314) is fixed to the outer peripheral wall of the positioning body (0031).

4. The base of the welding fixture positioning device according to claim 2, characterized in that, The support member (005) includes a locking section (0051) and an unlocking section (0052) connected together. The locking section (0051) has a locking hole (00511). When the support member (005) is in the second position, the upper edge of the locking hole (00511) abuts against the lower surface of the bearing step (00314). The unlocking section (0052) has an unlocking hole (00521). Before the positioning member (003) is raised to the first position, the unlocking hole (00521) is used for the positioning body (0031) and the bearing step (00314) to pass through.

5. The base of the welding fixture positioning device according to claim 4, characterized in that, The locking section (0051) and the unlocking section (0052) are connected in the horizontal direction, and the second driving member (004) can drive the support member (005) to move in the horizontal direction.

6. The base of the welding fixture positioning device according to claim 4, characterized in that, The locking hole (00511) is an oblong hole, and the unlocking hole (00521) is a round hole.

7. The base of the welding fixture positioning device according to claim 1, characterized in that, The second driving member (004) includes a driving cylinder (0041) and a transmission member (0042). The transmission member (0042) is connected to the support member (005). The driving cylinder (0041) drives the two support members (005) to move horizontally in a synchronous manner through the transmission member (0042).

8. The base of the welding fixture positioning device according to claim 1, characterized in that, The seat (001) has a through hole (00151) extending in the vertical direction, the through hole (00151) being slidably connected to the positioning member (003), and the upper end of the seat (001) having a limiting groove (00152) extending in the horizontal direction, the limiting groove (00152) being slidably connected to the support member (005).

9. The base of the welding fixture positioning device according to claim 8, characterized in that, The welding fixture positioning device base (00) also includes a wear-resistant bushing (0017), which is located between the inner wall of the through hole (00151) and the positioning element (003).

10. The base of the welding fixture positioning device according to claim 1, characterized in that, It also includes the controller (06); The controller (06) is electrically connected to the first drive unit (002) and the second drive unit (004).

11. A welding fixture positioning device, characterized in that, It includes a welding fixture positioning device base (00) and a fixture reference frame (01) as described in any one of claims 1-10.

Images