A kind of automobile hinge assembly grinding and clamping tool

Abstract

The present invention relates to the technical field of automotive hinge assembly manufacturing, and specifically relates to a grinding and clamping tooling for an automotive hinge assembly, which includes a U-shaped support. An installation seat is fixedly installed on the U-shaped support, and a support frame is located above the U-shaped support. A clamping mechanism for synchronously clamping and fixing multiple door hinges is provided on the U-shaped support. By adopting an integrated mode of alignment, clamping and support, simultaneous, efficient and precise processing of multiple hinges is achieved. Through alignment and pressing, the consistency of the positions of multiple door hinges before clamping is ensured. Subsequently, they are uniformly clamped and sent to the grinding area, improving production efficiency and ensuring the grinding effect. Secondly, the clamping force is enhanced through an auxiliary locking function to ensure the stability and safety of the hinges during the grinding process, and to prevent vibration and displacement during the grinding process, improving the stability of the processing process and the grinding quality, thereby optimizing the production process, enhancing the safety of operation and the reliability of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive hinge assembly manufacturing, and specifically to a grinding and clamping tooling for automotive hinge assemblies. Background Art

[0002] The door hinge (as shown in Fig. 9 ) is one of the most common types of hinges in automobiles. Door hinges are usually designed with a sturdy and durable structure that can withstand the weight and usage frequency of the door. In order to reduce the friction between metal surfaces, reduce the resistance during the opening and closing of the door, and improve the smoothness of opening and closing, it is necessary to use a corresponding clamping tooling to clamp the door hinge and send it to the grinding area before installing the door hinge, and grind the lower end surface of the door hinge, so that the metal surface of the door hinge after grinding and leveling is smoother and stronger.

[0003] Currently, there are the following problems when clamping and sending the door hinge to be ground: 1. When clamping and grinding the door hinge, the fixture can usually only clamp a single door hinge, resulting in low production efficiency, inability to achieve batch processing, increased production time and cost. Moreover, since only one hinge can be clamped each time, there will be differences in the clamping force and position between different hinges, thus affecting the consistency and quality of grinding; 2. During the process of clamping and grinding the door hinge, the unground part at the upper end of the door hinge is not supported, making the unsupported part prone to deformation due to the effect of grinding, thus affecting the structural integrity and function of the hinge. And the unsupported part of the door hinge is prone to vibration or displacement during the grinding process, resulting in uneven grinding, affecting the grinding quality, and further leading to a decrease in processing accuracy, affecting the assembly accuracy and service performance of the hinge.

[0004] Therefore, in order to ensure that the metal surface of the door hinge is smoother and stronger after grinding and leveling, the present invention provides a grinding and clamping tooling for automotive hinge assemblies. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a grinding and clamping tooling for automotive hinge assemblies, which is achieved by the following specific technical means: A grinding and clamping tooling for automotive hinge assemblies includes a U-shaped support. An installation seat and a support frame located above the U-shaped support are fixedly installed on the U-shaped support. A clamping mechanism for synchronously clamping and fixing multiple door hinges is provided on the U-shaped support; the clamping mechanism includes a driving part provided on the U-shaped support, a clamping part is jointly provided on the U-shaped support with the driving part, and a matching part is provided on the clamping part.

[0006] A positioning mechanism for longitudinally pressing multiple door hinges is jointly provided on the support frame and the U-shaped support; the positioning mechanism includes a pressing support part arranged on the support frame, and a positioning part for pressing and supporting and positioning and pressing multiple door hinges is arranged on the pressing support part, and a locking part for cooperating with the positioning part to lock and clamp the clamping part is arranged on the cooperating part.

[0007] A support mechanism for pressing and supporting the front and rear sides of the upper end of the door hinge is arranged on the cooperating part; the support mechanism includes a transmission part arranged on the cooperating part and a front pressing part cooperating with the transmission part, and a rear pressing part is also arranged on the cooperating part.

[0008] As a preferred technical solution of the present invention, the driving part includes a first bidirectional screw rod, a first motor and a connecting plate. The upper end inside the U-shaped support is rotatably installed with a first bidirectional screw rod through a bearing seat arranged, a first motor with an output end fixedly connected to the first bidirectional screw rod is fixedly installed on the U-shaped support, and symmetric front and rear connecting plates are threadedly connected to the first bidirectional screw rod.

[0009] As a preferred technical solution of the present invention, the clamping part includes a clamping slide plate, a first clamping block and a second clamping block. The lower end inside the U-shaped support is slidably installed with symmetric front and rear clamping slide plates fixedly connected to the corresponding connecting plates. A first clamping block is fixedly installed at the lower end of the front clamping slide plate, and a second clamping block is fixedly installed at the lower end of the rear clamping slide plate. The second clamping block cooperates with the first clamping block to clamp the door hinge.

[0010] As a preferred technical solution of the present invention, the cooperating part includes a first cooperation groove, a limit sliding groove and a second cooperation groove. A plurality of first cooperation grooves are arranged on the side wall of the second clamping block close to the first clamping block in a linear array manner, a limit sliding groove corresponding to the first cooperation groove one by one is arranged on the side wall of the first clamping block close to the second clamping block, and a plurality of second cooperation grooves are penetrated through the symmetric front and rear clamping slide plates in a linear array manner.

[0011] As a preferred technical solution of the present invention, the pressing support part includes a slide rod, a force-bearing plate and an electric push rod. The upper end of the U-shaped support is penetrated with symmetric left and right through holes, the slide rod is slidably installed in the through holes, the upper ends of the symmetric left and right slide rods are jointly fixedly installed with a force-bearing plate, and an electric push rod with a telescopic end fixedly connected to the force-bearing plate is fixedly installed on the support frame.

[0012] As a preferred technical solution of the present invention, the alignment part includes a lower pressure block, a second bidirectional screw, a second motor, an alignment plate and a pressure groove. The lower ends of the sliding rods that are symmetrical on the left and right are commonly fixedly installed with a lower pressure block located below the first bidirectional screw. The lower end surface of the lower pressure block is an arc surface. A limiting slideway that penetrates the arc surface is provided in the lower pressure block. The second bidirectional screw is installed in the lower pressure block through a bearing. A second motor whose output end is fixedly connected to the second bidirectional screw is fixedly installed on the lower pressure block. A left-right symmetrical alignment plate that is threadably connected to the second bidirectional screw is slidably installed in the limiting slideway. The lower pressure block is provided with pressure grooves that correspond one to one with the second matching grooves.

[0013] As a preferred technical solution of the present invention, the locking portion includes a first shaft rod and an L-shaped resistance plate. The first shaft rod is fixedly installed in the second mating groove. The first shaft rod is hinged with an L-shaped resistance plate corresponding to the resistance groove one by one through a torsion spring. The two L-shaped resistance plates facing each other front and back form an eight-shaped shape.

[0014] As a preferred technical solution of the present invention, the transmission part includes a first sliding hole, a push rod, a pressure slider and a first spring. The first clamping block is penetrated by a first sliding hole connected to the corresponding limiting sliding groove. The pressure slider is slidably installed in the limiting sliding groove. The lower end surface of the pressure slider is composed of a front side plane, a middle side inclined surface and a rear side plane. A push rod slidably connected to the first sliding hole is fixedly installed at the rear end of the pressure slider. A first spring mounted on the push rod is fixedly installed between the limiting sliding groove and the pressure slider.

[0015] As a preferred technical solution of the present invention, the front pressure part includes a second sliding hole, a pressure rod, a second spring and a pressure circular plate. The lower end surface of the inner part of the limiting sliding groove is penetrated by a plurality of second sliding holes in a linear array. The second sliding hole is perpendicular to the first sliding hole. A pressure rod is slidably installed in the second sliding hole. A pressure circular plate is fixedly installed at the lower end of the pressure rod. A second spring mounted on the pressure rod is fixedly installed between the pressure circular plate and the first clamping block.

[0016] As a preferred technical solution of the present invention, the rear pressure part includes a second shaft rod, a matching plate, a push rod and a third spring. The second shaft rod is fixedly installed in the first matching groove, and a matching plate is rotatably installed on the second shaft rod through a bearing. The lower end of the matching plate is semi-arc-shaped, and a push rod is fixedly installed on the side of the upper end of the matching plate close to the first clamping block, and a third spring is fixedly installed between the first matching groove and the matching plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The automobile hinge assembly grinding and clamping tooling, through the coordinated use of the clamping mechanism, the alignment mechanism and the supporting mechanism, adopts an integrated alignment, clamping and supporting mode to achieve efficient and precise processing of multiple hinges at the same time, and ensures the consistency of the positions of multiple door hinges before clamping through alignment and pressing, and then uniformly clamps and fixes them and sends them to the grinding place, thereby improving production efficiency and ensuring the grinding effect; secondly, the clamping force is enhanced through the auxiliary locking function, ensuring the stability and safety of the hinge during the grinding process, preventing vibration and displacement during the grinding process, improving the stability of the processing process and the grinding quality, thereby optimizing the production process, and enhancing the safety of operation and the reliability of equipment.

[0018] 2. The automobile hinge assembly grinding and clamping tooling, through the arranged alignment mechanism, can auxiliary lock the positions of the clamping blocks on both sides during the clamping and grinding of multiple door hinges, so as to increase the clamping force of the clamping blocks on the door hinges, ensure that the door hinges maintain a stable position during the grinding process, prevent them from loosening or falling off due to vibration or external force, thereby ensuring the continuity and safety of the processing, and the stable clamping can avoid the processing errors caused by the position offset of the door hinges, thereby improving the grinding accuracy.

[0019] 3. The automobile hinge assembly grinding and clamping tooling, through the coordinated use of the clamping mechanism and the supporting mechanism, can uniformly support the front and rear sides of the upper end of the door hinge during the clamping and grinding process to prevent the door hinge from vibrating and displacing during the grinding process, improve the stability of the processing process, ensure the grinding quality, and thus ensure the structural integrity and function of the door hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention when it is working.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention.

[0022] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0023] Figure 4 It is a bottom-up three-dimensional structural schematic diagram of the alignment part of the present invention.

[0024] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the rear pressing part of the present invention.

[0025] Figure 6 It is a bottom-up stereoscopic structural schematic diagram of the front pressing portion of the present invention.

[0026] Figure 7 for Figure 5 Schematic diagram of the enlarged structure at position A in

[0027] Figure 8 is Figure 5 Schematic diagram of the enlarged structure at position B in

[0028] Fig. 9 Schematic three - dimensional structure diagram of the car door hinge.

[0029] In the figure: 1, U - shaped support; 2, mounting seat; 3, support frame; 4, clamping mechanism; 41, driving part; 411, first bidirectional screw; 412, first motor; 413, connecting plate; 42, clamping part; 421, clamping slide; 422, first clamping block; 423, second clamping block; 43, matching part; 431, first matching groove; 432, limit sliding groove; 433, second matching groove; 5, alignment mechanism; 51, pressing part; 511, sliding rod; 512, stress plate; 513, electric push rod; 52, alignment part; 521, pressing block; 522, second bidirectional screw; 523, second motor; 524, alignment plate; 525, pressing groove; 53, locking part; 531, first shaft rod; 532, L - shaped pressing plate; 6, support mechanism; 61, transmission part; 611, first sliding hole; 612, resisting rod; 613, pressing slider; 614, first spring; 62, front pressing part; 621, second sliding hole; 622, pressing rod; 623, second spring; 624, pressing circular plate; 63, rear pressing part; 631, second shaft rod; 632, matching plate; 633, ejecting rod; 634, third spring. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1 , a grinding and clamping tooling for an automobile hinge assembly, including a U - shaped support 1, a mounting seat 2 fixedly installed on the U - shaped support 1 and a support frame 3 located above the U - shaped support 1. A clamping mechanism 4 for synchronously clamping and fixing a plurality of car door hinges is arranged on the U - shaped support 1; the clamping mechanism 4 includes a driving part 41 arranged on the U - shaped support 1, a clamping part 42 is jointly arranged on the driving part 41 and the U - shaped support 1, and a matching part 43 is arranged on the clamping part 42.

[0032] Please refer to Figure 1 and Figure 3, a positioning mechanism 5 for longitudinally pressing multiple door hinges is jointly provided on the support frame 3 and the U-shaped support 1; the positioning mechanism 5 includes a pressing support part 51 arranged on the support frame 3, and a positioning part 52 for pressing and supporting and positioning and pressing multiple door hinges is arranged on the pressing support part 51, and a locking part 53 for cooperating with the positioning part 52 to lock and clamp the clamping part 42 is arranged on the matching part 43.

[0033] Please refer to Figure 1 , Figure 2 and Figure 6 , a support mechanism 6 for pressing and supporting the front and rear sides of the upper end of the door hinge is arranged on the matching part 43; the support mechanism 6 includes a transmission part 61 arranged on the matching part 43 and a front pressing part 62 cooperating with the transmission part 61, and a rear pressing part 63 is also arranged on the matching part 43.

[0034] Please refer to Figure 1 , Figure 2 and Figure 5 , the driving part 41 includes a first bidirectional screw 411, a first motor 412 and a connecting plate 413. The upper end inside the U-shaped support 1 is rotatably installed with a first bidirectional screw 411 through a bearing seat arranged, a first motor 412 with an output end fixedly connected to the first bidirectional screw 411 is fixedly installed on the U-shaped support 1, and symmetric front and rear connecting plates 413 are threadedly connected to the first bidirectional screw 411.

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , the clamping part 42 includes a clamping slide plate 421, a first clamping block 422 and a second clamping block 423. The lower end inside the U-shaped support 1 is slidably installed with symmetric front and rear clamping slide plates 421 fixedly connected to the corresponding connecting plates 413. A first clamping block 422 is fixedly installed at the lower end of the front clamping slide plate 421, and a second clamping block 423 is fixedly installed at the lower end of the rear clamping slide plate 421. The second clamping block 423 cooperates with the first clamping block 422 to clamp the door hinge.

[0036] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 , the matching part 43 includes a first matching groove 431, a limiting sliding groove 432 and a second matching groove 433. A plurality of first matching grooves 431 are arranged on one side wall of the second clamping block 423 close to the first clamping block 422 in a linear array manner, a limiting sliding groove 432 corresponding to the first matching groove 431 one by one is arranged on one side wall of the first clamping block 422 close to the second clamping block 423, and a plurality of second matching grooves 433 are arranged on the symmetric front and rear clamping slide plates 421 in a linear array manner through holes.

[0037] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown in, the pressing and bracing part 51 includes a sliding rod 511, a stress plate 512 and an electric push rod 513. Through holes that are symmetric left and right are formed through the upper end of the U-shaped support 1. A sliding rod 511 is slidably installed in the through holes. The upper ends of the symmetric left and right sliding rods 511 are fixedly installed with a stress plate 512 together. An electric push rod 513 with a telescopic end fixedly connected to the stress plate 512 is fixedly installed on the support frame 3.

[0038] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 8 As shown in, the alignment part 52 includes a lower pressing block 521, a second bidirectional screw 522, a second motor 523, an alignment plate 524 and a pressing groove 525. The lower ends of the symmetric left and right sliding rods 511 are fixedly installed with a lower pressing block 521 located below the first bidirectional screw 411 together. The lower end face of the lower pressing block 521 is an arc surface. A limiting slideway penetrating the arc surface is formed in the lower pressing block 521. A second bidirectional screw 522 is installed in the lower pressing block 521 through a bearing. A second motor 523 with an output end fixedly connected to the second bidirectional screw 522 is fixedly installed on the lower pressing block 521. Symmetric left and right alignment plates 524 that are threadedly connected to the second bidirectional screw 522 are slidably installed in the limiting slideway. Pressing grooves 525 corresponding to the second fitting grooves 433 one by one are formed in the lower pressing block 521.

[0039] Please refer to Figure 1 、 Figure 3 、 Figure 7 and Figure 8 As shown in, the locking part 53 includes a first shaft rod 531 and an L-shaped pressing plate 532. A first shaft rod 531 is fixedly installed in the second fitting groove 433. An L-shaped pressing plate 532 corresponding to the pressing groove 525 one by one is hinged to the first shaft rod 531 through a torsion spring arranged thereon. The two front and rear opposite L-shaped pressing plates 532 form an eight-character shape.

[0040] During specific operation, when it is necessary to clamp and grind the car door hinge, first place a plurality of car door hinges below the U-shaped support 1, and then lower the U-shaped support 1 so that the plurality of car door hinges are placed inside the U-shaped support 1. Then start the first motor 412 to rotate the first bidirectional screw 411, so that the connecting plate 413 drives the clamping sliding plates 421 to approach each other, so that the first clamping block 422 and the second clamping block 423 approach each other, so that the front and rear positions of the plurality of car door hinges are calibrated, and after the calibration is completed, reverse-start the first motor 412 so that the first clamping block 422 and the second clamping block 423 move away from the protruding parts of the car door hinge.

[0041] Then the electric push rod 513 can be started to make it descend with the pressing block 521 through the force plate 512, so that the arc surface of the lower end surface of the pressing block 521 fits with the upper end of the door hinge, and then the second motor 523 can be started to rotate the second bidirectional screw 522, thereby bringing the alignment plates 524 on both sides closer to each other, until the alignment plates 524 on both sides align and press multiple door hinges from the left and right sides. At this time, the second motor 523 can be started in the reverse direction to make the alignment plates 524 on both sides move away from each other, and the electric push rod 513 can be started in the reverse direction to make the pressing block 521 rise. At this time, the first motor 412 can be started again through the cooperation between the driving part 41 and the clamping part 42, so that the first clamping block 422 and the second clamping block 423 are close to each other to uniformly clamp and fix multiple door hinges, thereby ensuring that the positions of the door hinges before clamping are consistent.

[0042] When the first clamping block 422 and the second clamping block 423 clamp the door hinge, the clamping slides 421 on both sides will drive their respective L-shaped abutting plates 532 to approach each other but not to contact each other. At this time, the electric push rod 513 is started forward to make it descend with the lower pressing block 521, and the lower end surface of the lower pressing block 521 presses downward the opposite end of the front and rear L-shaped abutting plates 532, so that the L-shaped abutting plates 532 rotate around the first shaft 531. When the lower pressing block 521 continues to descend, the opposite L-shaped abutting plates 532 on the front and rear sides will slide into the corresponding abutting grooves 532. 25, at this time, the pressing groove 525 supports and presses the L-shaped pressing plate 532, and the other end of the L-shaped pressing plate 532 will clamp the corresponding clamping slide plate 421, thereby locking the first clamping block 422 and the second clamping block 423, and the two front and rear opposite L-shaped pressing plates 532 rotate from a positive eight-shaped shape to an inverted eight-shaped shape. At the same time, the lower end surface of the pressing block 521 contacts and supports the upper ends of multiple door hinges at the same time, thereby increasing the clamping force on the door hinges and ensuring that the door hinges remain stable during the grinding process.

[0043] See also Figure 1 , Figure 2 , Figure 6 and Figure 7 The transmission part 61 includes a first sliding hole 611, a push rod 612, a pressing slider 613 and a first spring 614. The first clamping block 422 is provided with a first sliding hole 611 connected to the corresponding limiting sliding groove 432. The pressing slider 613 is slidably installed in the limiting sliding groove 432. The lower end surface of the pressing slider 613 is composed of a front side plane, a middle side inclined surface and a rear side plane. The rear end of the pressing slider 613 is fixedly installed with a push rod 612 slidably connected to the first sliding hole 611. A first spring 614 is fixedly installed between the limiting sliding groove 432 and the pressing slider 613 and is sleeved on the push rod 612.

[0044] See also Figure 1 , Figure 2 , Figure 6 and Figure 7 The front pressing portion 62 includes a second sliding hole 621, a pressing rod 622, a second spring 623 and a pressing circular plate 624. A plurality of second sliding holes 621 are penetrated through the lower end surface of the limiting sliding groove 432 in a linear array. The second sliding holes 621 are perpendicular to the first sliding holes 611. A pressing rod 622 is slidably installed in the second sliding hole 621. A pressing circular plate 624 is fixedly installed at the lower end of the pressing rod 622. A second spring 623 sleeved on the pressing rod 622 is fixedly installed between the pressing circular plate 624 and the first clamping block 422.

[0045] See also Figure 1 , Figure 2 and Figure 5 The rear pressure portion 63 includes a second shaft rod 631, a matching plate 632, a push rod 633 and a third spring 634. The second shaft rod 631 is fixedly installed in the first matching groove 431, and the matching plate 632 is rotatably installed on the second shaft rod 631 through a bearing. The lower end of the matching plate 632 is semi-arc-shaped, and a push rod 633 is fixedly installed on the upper end of the matching plate 632 close to the first clamping block 422. The third spring 634 is fixedly installed between the first matching groove 431 and the matching plate 632.

[0046] When the first clamping block 422 and the second clamping block 423 are close to each other, the push rod 612 will first contact the door hinge and push the push rod 612 forward through the door hinge, so that the pressing slider 613 moves forward in the limiting slide groove 432, and the pressing slider 613 will squeeze the plurality of pressing rods 622 downward at the same time through its lower end surface, so that the pressing rod 622 brings the pressing circular plate 624 close to the front side of the upper end surface of the horizontal end of the door hinge, and the pressing circular plate 624 is in contact with and supports the door hinge while the first clamping block 422 and the second clamping block 423 complete the clamping and fixing of the door hinge. At the same time, the first The top rod 633 in a matching groove 431 will also contact the door hinge, so that the matching plate 632 rotates around the second shaft rod 631, so that the semi-arc shape of the lower end of the second shaft rod 631 presses against the rear side of the upper end surface of the horizontal end of the door hinge, thereby pressing and supporting the rear side of the horizontal end of the door hinge. Subsequently, the multiple door hinges clamped by the convex support 1 can be moved to the grinding site, and the lower end surfaces of the multiple door hinges clamped by the clamping mechanism 4 can be synchronously grinded by a grinder. At this time, the lower end of the matching plate 632 and the pressing circular plate 624 will provide support for the door hinge, thereby preventing the door hinge from vibrating and displacing during the grinding process.

[0047] See also Figure 1-Figure 9, Working principle: When it is necessary to clamp and polish the car door hinge, first place multiple car door hinges under the U-shaped support 1, and then lower the U-shaped support 1 so that multiple car door hinges are placed inside the U-shaped support 1. Then start the first motor 412, and through the cooperation of the driving part 41 and the clamping part 42, calibrate the front and rear positions of multiple car door hinges. After the calibration is completed, reverse-start the first motor 412 to make the first clamping block 422 and the second clamping block 423 move away from the car door hinge.

[0048] Then start the electric push rod 513 to lower the pressing block 521 to fit with the upper end of the car door hinge. Then start the second motor 523 to press and align multiple car door hinges from the left and right sides through the alignment part 52. Then reverse-start the second motor 523 and reverse-start the electric push rod 513 to raise the pressing block 521. At this time, the first motor 412 can be started again, and through the cooperation of the driving part 41 and the clamping part 42, the first clamping block 422 and the second clamping block 423 approach each other to clamp and fix multiple car door hinges uniformly. During this process, the clamping mechanism 4 and the support mechanism 6 cooperate to provide support for the car door hinge.

[0049] Then forward-start the electric push rod 513 to make it drive the pressing block 521 to descend, so that the alignment part 52 and the locking part 53 cooperate to lock the first clamping block 422 and the second clamping block 423. Then the U-shaped support 1 with multiple clamped car door hinges can be moved to the grinding place, and a grinding machine is used to grind the lower end surfaces of multiple car door hinges clamped by the clamping mechanism 4.

[0050] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An abrasive grinding clamping tool for an automotive hinge assembly, comprising a U-shaped support, on which an installation seat and a support frame located above the U-shaped support are fixedly installed, and a clamping mechanism for synchronously clamping and fixing a plurality of car door hinges is arranged on the U-shaped support; The clamping mechanism includes a driving part arranged on the U-shaped support. The driving part and the U-shaped support are jointly provided with a clamping part, and a matching part is arranged on the clamping part. The matching part includes a first matching groove, a limiting sliding groove and a second matching groove; The support frame and the U-shaped support are jointly provided with an alignment mechanism for longitudinally pressing a plurality of car door hinges; The alignment mechanism includes a pressing and supporting part arranged on the support frame. The pressing and supporting part is provided with an alignment part for pressing and supporting and aligning and pressing a plurality of car door hinges, and a locking part for cooperating with the alignment part to lock the clamping part is arranged on the matching part; The matching part is provided with a support mechanism for pressing and supporting the front and rear sides of the upper end of the car door hinge; The support mechanism includes a transmission part arranged on the matching part and a front pressing part cooperating with the transmission part, and a rear pressing part is also arranged on the matching part; The clamping part includes a clamping slide plate, a first clamping block and a second clamping block, and the second clamping block cooperates with the first clamping block to clamp the car door hinge; The alignment part includes a lower pressing block, a second bidirectional screw, a second motor, an alignment plate and a pressing groove. The lower end surface of the lower pressing block is an arc surface, and a limiting slideway penetrating the arc surface is opened in the lower pressing block. A second bidirectional screw is installed in the lower pressing block through a bearing, and a second motor with an output end fixedly connected to the second bidirectional screw is fixedly installed on the lower pressing block. Symmetrically arranged alignment plates that are slidably installed in the limiting slideway and are threadedly connected to the second bidirectional screw; The locking part includes a first shaft rod and an L-shaped pressing plate. A first shaft rod is fixedly installed in the second matching groove, and an L-shaped pressing plate corresponding to the pressing groove is hinged on the first shaft rod through a torsion spring arranged thereon. The two L-shaped pressing plates opposite to each other front and rear form an eight-character shape.

2. The automobile hinge assembly grinding and clamping tool according to claim 1, characterized in that: The driving part includes a first bidirectional screw, a first motor and a connecting plate. The upper end inside the U-shaped support is rotatably installed with a first bidirectional screw through a bearing seat arranged thereon. A first motor with an output end fixedly connected to the first bidirectional screw is fixedly installed on the U-shaped support, and symmetrically arranged connecting plates front and rear are threadedly connected to the first bidirectional screw.

3. The automobile hinge assembly grinding and clamping tool according to claim 2, characterized in that: The lower ends inside the U-shaped support are slidably installed with symmetrically arranged clamping slide plates front and rear that are fixedly connected to the corresponding connecting plates. A first clamping block is fixedly installed at the lower end of the front clamping slide plate, and a second clamping block is fixedly installed at the lower end of the rear clamping slide plate.

4. The automobile hinge assembly grinding and clamping tool according to claim 3, characterized in that: On one side wall of the second clamping block close to the first clamping block, a plurality of first matching grooves are arranged in a linear array. On one side wall of the first clamping block close to the second clamping block, a limiting sliding groove corresponding to the first matching groove is opened. A plurality of second matching grooves are penetrated through in a linear array on the symmetrically arranged clamping slide plates front and rear.

5. A grinding and clamping tool for automobile hinge components according to claim 4, characterized in that: The pressing and supporting part includes a slide rod, a stress plate and an electric push rod. Symmetrically arranged through holes are opened through the upper end of the U-shaped support. Slide rods are slidably installed in the through holes. The upper ends of the symmetrically arranged slide rods are jointly fixedly installed with a stress plate, and an electric push rod with a telescopic end fixedly connected to the stress plate is fixedly installed on the support frame.

6. The automobile hinge assembly grinding and clamping tool according to claim 5, characterized in that: A pressing block located below the first bidirectional screw is fixedly mounted on the lower ends of the sliding rods which are symmetrical on both sides. The pressing block is provided with pressing grooves which correspond one to one with the second matching grooves.

7. The automobile hinge assembly grinding and clamping tool according to claim 4, characterized in that: The transmission part includes a first sliding hole, a push rod, a pressure slider and a first spring. The first clamping block is provided with a first sliding hole connected to the corresponding limiting sliding groove. The pressure slider is slidably installed in the limiting sliding groove. The lower end surface of the pressure slider is composed of a front side plane, a middle side inclined surface and a rear side plane. A push rod slidably connected to the first sliding hole is fixedly installed at the rear end of the pressure slider. A first spring mounted on the push rod is fixedly installed between the limiting sliding groove and the pressure slider.

8. The automobile hinge assembly grinding and clamping tool according to claim 7, characterized in that: The front pressure part includes a second sliding hole, a pressure rod, a second spring and a pressure circular plate. The lower end surface of the inner part of the limiting sliding groove is penetrated by a plurality of second sliding holes in a linear array. The second sliding hole is perpendicular to the first sliding hole. A pressure rod is slidably installed in the second sliding hole. A pressure circular plate is fixedly installed at the lower end of the pressure rod. A second spring mounted on the pressure rod is fixedly installed between the pressure circular plate and the first clamping block.

9. The automobile hinge assembly grinding and clamping tool according to claim 4, characterized in that: The rear pressure part includes a second shaft rod, a matching plate, a push rod and a third spring. The second shaft rod is fixedly installed in the first matching groove. The matching plate is rotatably installed on the second shaft rod through a bearing. The lower end of the matching plate is semi-arc-shaped. A push rod is fixedly installed on the side of the upper end of the matching plate close to the first clamping block. The third spring is fixedly installed between the first matching groove and the matching plate.

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