Jig structure for machining automobile doorsill beam

Abstract

The utility model discloses a jig structure for machining an automobile doorsill beam in the technical field of machining devices. The jig structure for machining the automobile doorsill beam comprises a bridge plate, at least two clamping mechanisms and a positioning block, the two clamping mechanisms are fixedly connected to the two ends of the bridge plate in the length direction, the clamping mechanisms are of a symmetrical structure, the clamping mechanisms comprise two symmetrically-formed mounting grooves in the face perpendicular to the length direction of the bridge plate, and the positioning block is arranged in the mounting grooves. The two clamping devices are used for positioning and clamping a left doorsill beam and a right doorsill beam respectively; the positioning block is fixedly connected to the bridge plate, a first mounting face and a second mounting face are arranged on the side, close to the clamping mechanism, of the positioning block, and the first mounting face and the second mounting face correspond to the two mounting grooves in position so that the left threshold beam and the right threshold beam can be limited in the length direction of the bridge plate. By arranging the clamping mechanism of a symmetrical structure, the two symmetrical mounting grooves can achieve clamping of the left doorsill beam and the right doorsill beam at the same time, so that the clamping and machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing devices, and particularly relates to a fixture structure for processing an automobile sill beam. Background Art

[0002] The sill beam is the main beam on the left and right sides in the middle of an automobile. Currently, the structure of the automobile sill beam has many special-shaped surfaces, and usually multiple surfaces of the sill beam need to be processed. How to ensure good processing stability during the processing of the product at different rotation angles is a challenge.

[0003] Chinese patents: CN 221290998 U and CN 116441358 A both disclose a processing device for an automobile sill beam. However, the processing devices in both texts can only clamp a single automobile sill beam, and the processing efficiency is relatively low in practice. Summary of the Utility Model

[0004] To overcome the problem of low processing efficiency of the existing fixture structure for processing an automobile sill beam, the utility model provides a fixture structure for processing an automobile sill beam.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A fixture structure for processing an automobile sill beam includes a bridge plate, a clamping mechanism, and a positioning block. The clamping mechanism is provided with at least two. The two clamping mechanisms are fixedly connected to both ends in the length direction of the bridge plate. The clamping mechanism is a symmetric structure. On the plane perpendicular to the length direction of the bridge plate, the clamping mechanism includes two symmetrically arranged mounting grooves, which are respectively used for positioning and clamping the left sill beam and the right sill beam. The positioning block is fixedly connected to the bridge plate. On the side of the positioning block close to the clamping mechanism, a first mounting surface and a second mounting surface are respectively provided. The positions of the first mounting surface and the second mounting surface respectively correspond to the two mounting grooves to realize the limit of the left sill beam and the right sill beam in the length direction of the bridge plate.

[0007] In this application, by setting a symmetric clamping mechanism, the two symmetric mounting grooves can simultaneously clamp the left sill beam and the right sill beam to improve the clamping and processing efficiency.

[0008] Further, the clamping mechanism includes a positioning bracket, a slider, and a driving device. On the plane perpendicular to the length direction of the bridge plate, the positioning bracket includes a bottom plate, a middle column, and side plates on both sides. The upper surface of the bottom plate of the positioning bracket is higher than the upper surface of the bridge plate as the third positioning surface. The inner side of the side plate of the positioning bracket forms a positioning surface. An installation groove is formed between the side plate of the positioning bracket and the column. A plurality of sliders are arranged on the column, and the driving device can drive the plurality of sliders to move towards both sides of the column respectively.

[0009] Further, on the plane perpendicular to the longitudinal direction of the bridge plate, the first positioning surface and the fifth positioning surface, the second positioning surface and the fourth positioning surface are symmetrically arranged on the side plates on both sides of the positioning bracket. The first positioning surface and the second positioning surface are located on the same side of the positioning bracket, and the height of the first positioning surface is higher than that of the second positioning surface. The height of the fifth positioning surface is higher than that of the fourth positioning surface, so as to achieve abutting, fixing and limiting of the left and right sill beams at different heights.

[0010] Further, corresponding to the positioning surfaces on the side plates of the positioning bracket, the first slider, the second slider, the fourth slider and the fifth slider are arranged on the column. The first slider and the second slider can slide relative to the column towards the side plate where the first positioning surface is located, and the fourth slider and the fifth slider can slide relative to the column towards the side plate where the fifth positioning surface is located.

[0011] Further, the first slider, the second slider, the fourth slider and the fifth slider can move synchronously under the action of the driving device.

[0012] Further, the driving device includes a cylinder and a steel ball. The steel ball can move back and forth under the push of the cylinder. A third slider is also arranged on the column. The third slider is arranged vertically, and a symmetrical wedge-shaped structure is arranged at the upper end of the third slider. The first slider and the fifth slider are both correspondingly provided with inclined surfaces adapted to the wedge-shaped structure, and both the first slider and the fifth slider are in contact with the third slider, so that when the third slider moves upward, it can push the first slider and the fifth slider to move synchronously to both sides of the column; inclined surfaces are arranged at the lower end of the third slider, the end of the second slider close to the third slider and the end of the fourth slider close to the third slider, which are used to contact the steel ball, so that when the cylinder pushes, the upward movement of the third slider, the second slider and the fourth slider move to both sides synchronously.

[0013] Further, the first slider, the second slider, the fourth slider and the fifth slider are correspondingly provided with limit blocks. The limit blocks are fixedly installed on the column and are used to cooperate with the limit grooves to limit the stroke of the sliders, and springs are also arranged in the limit grooves for the sliders to reset.

[0014] Further, the force application center point of the first slider corresponds to the geometric center of the first positioning surface, the force application center point of the second slider corresponds to the geometric center of the second positioning surface, the force application center point of the fourth slider corresponds to the geometric center of the fourth positioning surface, and the force application center point of the fifth slider corresponds to the geometric center of the fifth positioning surface.

[0015] Further, the sides of the first slider and the second slider close to the side plate where the first positioning surface is located are set as arc surfaces, and the sides of the fourth slider and the fifth slider close to the side plate where the fifth positioning surface is located are set as arc surfaces.

[0016] Further, the positioning bracket further includes a pressing plate disposed above the installation groove. The pressing plate can move up and down relative to the column, and the first stress surface and the second stress surface of the pressing plate are correspondingly provided on both sides of the pressing plate to limit the left sill beam and the right sill beam in the vertical direction.

[0017] The beneficial effects of the present utility model are as follows: By providing a clamping mechanism with a symmetrical structure, the two symmetrical installation grooves can simultaneously clamp the left sill beam and the right sill beam, so as to improve the clamping and processing efficiency; Through the design of the slider structure and the cooperation of steel balls, the synchronous movement of different sliders is realized, so as to further realize automatic rapid clamping, and the clamping force size is adjustable and controllable. It not only has high production and processing efficiency, but also has stable quality, effectively improving the product production efficiency and qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the fixture structure for processing automotive sill beams provided by the present utility model in a clamped state;

[0019] Figure 2 is a schematic diagram of the overall structure of the fixture structure for processing automotive sill beams provided by the present utility model in an unclamped state;

[0020] Figure 3 is Figure 1 a schematic diagram of the cooperation state of the positioning bracket and the sill beam in

[0021] Figure 4 is Figure 3 a schematic diagram of the structure of the positioning bracket after removing the cover plate in

[0022] Figure 5 is a schematic diagram of the connection structure of the driving device and the slider in the fixture structure for processing automotive sill beams provided by the present utility model;

[0023] Figure 6 is Figure 5 a schematic diagram of the connection structure of the steel ball and the slider in

[0024] Figure 7 is Figure 6 a schematic diagram of the structure after removing the steel ball;

[0025] Figure 8 is Figure 1 a cross-sectional view of the left sill beam and the right sill beam in

[0026] In the figure, the markings are as follows: 1 - bridge plate, 2 - positioning block, 21 - first mounting surface, 22 - second mounting surface, 3 - clamping mechanism, 31 - positioning bracket, 311 - first positioning surface, 312 - second positioning surface, 313 - third positioning surface, 314 - fourth positioning surface, 315 - fifth positioning surface, 32 - pressure plate, 321 - first stress surface of the pressure plate, 322 - second stress surface of the pressure plate, 33 - tie rod, 34 - cover plate, 35 - slider, 351 - first slider, 352 - second slider, 353 - third slider, 354 - fourth slider, 355 - fifth slider, 36 - limit block, 4 - left sill beam, 411 - left first positioning surface, 412 - left second positioning surface, 413 - left third positioning surface, 421 - left first stress surface, 422 - left second stress surface, 432 - left third stress surface, 5 - right sill beam, 511 - right first positioning surface, 512 - right second positioning surface, 513 - right third positioning surface, 521 - right first stress surface, 522 - right second stress surface, 532 - right third stress surface, 6 - driving device, 61 - steel ball, 62 - steel ball push plate, 63 - cylinder. Detailed implementation mode

[0027] The present utility model will be further described below with reference to the accompanying drawings.

[0028] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] As Figure 1-8 shown, the present utility model provides a fixture structure for processing automobile sill beams.

[0030] The fixture structure for processing automobile sill beams includes a bridge plate 1, a clamping mechanism 3 and a positioning block 2. The clamping mechanism 3 is provided with at least two, and the two clamping mechanisms 3 are fixedly connected to both ends of the bridge plate 1 in the length direction. The clamping mechanism 3 is a symmetric structure. On the plane perpendicular to the length direction of the bridge plate 1, the clamping mechanism 3 includes two symmetrically arranged mounting grooves, which are respectively used for positioning and clamping the left sill beam 4 and the right sill beam 5. The positioning block 2 is fixedly connected to the bridge plate 1. The first mounting surface 21 and the second mounting surface 22 are respectively arranged on the side of the positioning block 2 close to the clamping mechanism 3, and the positions of the first mounting surface 21 and the second mounting surface 22 correspond to the two mounting grooves respectively, so as to limit the left sill beam 4 and the right sill beam 5 along the length direction of the bridge plate 1.

[0031] In this application, by setting the symmetric clamping mechanism 3, the two symmetric mounting grooves can simultaneously clamp the left sill beam 4 and the right sill beam 5, so as to improve the clamping and processing efficiency.

[0032] Furthermore, the clamping mechanism 3 includes a positioning bracket 31, sliders 35, and a driving device 6. On a plane perpendicular to the length direction of the bridge plate 1, the positioning bracket 31 includes a bottom plate, a middle column, and side plates on both sides. The upper surface of the bottom plate of the positioning bracket 31 is higher than the upper surface of the bridge plate 1 to serve as a third positioning surface 313. The inner sides of the side plates of the positioning bracket 31 form positioning surfaces, and an installation groove is formed between the side plates and the column of the positioning bracket 31. A plurality of sliders 35 are arranged on the column, and the driving device 6 can drive the plurality of sliders 35 to move towards both sides of the column respectively.

[0033] In this embodiment, the upper surface of the bottom plate of the positioning bracket 31 is higher than the upper surface of the bridge plate 1 to serve as a third positioning surface 313, so as to support and limit the left third positioning surface 413 at the bottom of the left sill beam 4 and the right third positioning surface 513 at the bottom of the right sill beam 5. Positioning surfaces are provided on the side plates of the positioning bracket 31, and the left sill beam 4 and the right sill beam 5 are abutted and limited by combining the movement of the sliders 35.

[0034] Furthermore, on a plane perpendicular to the length direction of the bridge plate 1, a first positioning surface 311 and a fifth positioning surface 315, a second positioning surface 312 and a fourth positioning surface 314 are symmetrically arranged on the side plates on both sides of the positioning bracket 31. The first positioning surface 311 and the second positioning surface 312 are located on the same side of the positioning bracket 31, and the height of the first positioning surface 311 is higher than that of the second positioning surface 312. The height of the fifth positioning surface 315 is higher than that of the fourth positioning surface 314, so as to achieve abutting and fixing of different heights of the left sill beam 4 and the right sill beam 5.

[0035] In this embodiment, abutting and fixing are achieved at both the upper and lower ends of the left sill beam 4 and the right sill beam 5. Specifically, a first positioning surface 311 and a second positioning surface 312 are respectively arranged at different heights on one side of the positioning bracket 31. The first positioning surface 311 is used to abut the left first positioning surface 411 of the left sill beam 4, and the second positioning surface 312 is used to abut the left second positioning surface 412 of the left sill beam 4; a fifth positioning surface 315 and a fourth positioning surface 314 are respectively arranged at different heights on the other side of the positioning bracket 31. The fifth positioning surface 315 is used to abut the right first positioning surface 511 of the right sill beam 5, and the fourth positioning surface 314 is used to abut the right second positioning surface 512 of the right sill beam 5.

[0036] Furthermore, corresponding to the positioning surfaces on the side plates of the positioning bracket 31, a first slider 351, a second slider 352, a fourth slider 354, and a fifth slider 355 are arranged on the column. The first slider 351 and the second slider 352 can slide relative to the column towards the side of the side plate where the first positioning surface 311 is located, and the fourth slider 354 and the fifth slider 355 can slide relative to the column towards the side of the side plate where the fifth positioning surface 315 is located.

[0037] In this embodiment, to achieve a better fixing and clamping effect, the positioning surfaces on the side plates of the slider 35 and the positioning bracket 31 are arranged opposite to each other. Specifically, after the first slider 351 moves, it abuts against the left first stress surface 421 of the left sill beam 4, and the first slider 351 and the first positioning surface 311 jointly achieve the lateral clamping of the upper half of the left sill beam 4; after the second slider 352 moves, it abuts against the left second stress surface 422 of the left sill beam 4, and the second slider 352 and the second positioning surface 312 jointly achieve the lateral clamping of the lower half of the left sill beam 4; after the fifth slider 355 moves, it abuts against the right first stress surface 521 of the right sill beam 5, and the fifth slider 355 and the fifth positioning surface 315 jointly achieve the lateral clamping of the upper half of the right sill beam 5; after the fourth slider 354 moves, it abuts against the right second stress surface 522 of the right sill beam 5, and the fourth slider 354 and the fourth positioning surface 314 jointly achieve the lateral clamping of the lower half of the right sill beam 5.

[0038] In this embodiment, considering the profile error of the sill beam, it is designed that the large surface of the first positioning surface 311 is smaller than the profile of the left sill beam 4. Similarly, the large surface of the fifth positioning surface 315 is smaller than the profile of the right sill beam 5.

[0039] Furthermore, the first slider 351, the second slider 352, the fourth slider 354 and the fifth slider 355 can move synchronously under the action of the driving device 6.

[0040] In this embodiment, preferably, the first slider 351, the second slider 352, the fourth slider 354 and the fifth slider 355 move synchronously to further improve the clamping efficiency and facilitate the uniform control of the clamping force.

[0041] Furthermore, the driving device 6 includes a cylinder 63 and a steel ball 61. The steel ball 61 can move back and forth under the push of the cylinder 63. A third slider 353 is also provided on the column. The third slider 353 is arranged vertically, and a symmetrical wedge structure is provided at the upper end of the third slider 353. The first slider 351 and the fifth slider 355 are respectively provided with inclined surfaces adapted to the wedge structure, and both the first slider 351 and the fifth slider 355 abut against the third slider 353, so that when the third slider 353 moves upward, it can push the first slider 351 and the fifth slider 355 to move synchronously to both sides of the column; inclined surfaces are provided at the lower end of the third slider 353, one end of the second slider 352 close to the third slider 353 and one end of the fourth slider 354 close to the third slider 353 for abutting against the steel ball 61, so that when the cylinder 63 pushes, the upward movement of the third slider 353, the second slider 352 and the fourth slider 354 move synchronously to both sides.

[0042] In this embodiment, as implemented above, when the cylinder 63 operates, the steel ball 61 is pushed forward by the steel ball push plate 62. Since the steel ball 61 abuts against the inclined surfaces of the third slider 353, the second slider 352, and the fourth slider 354 simultaneously, when the steel ball 61 advances, the second slider 352 and the fourth slider 354 move towards both sides of the column, synchronously with the upward movement of the third slider 353; and the upward movement of the third slider 353 will drive the first slider 351 and the fifth slider 355 to move towards both sides of the column respectively.

[0043] Furthermore, the first slider 351, the second slider 352, the fourth slider 354, and the fifth slider 355 are respectively provided with limit blocks 36. The limit blocks 36 are fixedly installed on the column and are used to cooperate with the limit grooves to limit the stroke of the slider 35, and springs are also provided in the limit grooves for the slider 35 to reset.

[0044] In this embodiment, the limit block 36 is L-shaped. One end of the L-shape is fixedly clamped inside the column, and the other end extends into the limit groove of the slider 35. A spring is installed between the limit block in the limit groove and the slider 35. In the initial state, the first slider 351, the second slider 352, the fourth slider 354, and the fifth slider 355 have a moving space towards both sides of the column. When the cylinder 63 operates, it can drive the slider 35 to move. When the cylinder 63 retracts, under the action of the spring restoring force, it drives the slider 35 to reset.

[0045] Furthermore, the force application center point of the first slider 351 corresponds to the geometric center of the first positioning surface 311, the force application center point of the second slider 352 corresponds to the geometric center of the second positioning surface 312, the force application center point of the fourth slider 354 corresponds to the geometric center of the fourth positioning surface 314, and the force application center point of the fifth slider 355 corresponds to the geometric center of the fifth positioning surface 315.

[0046] In this embodiment, as implemented above, to achieve a stable clamping effect on the left sill beam 4 and the right sill beam 5 and avoid uneven force.

[0047] Furthermore, the sides of the first slider 351 and the second slider 352 close to the side plate where the first positioning surface 311 is located are arranged as arc surfaces, and the sides of the fourth slider 354 and the fifth slider 355 close to the side plate where the fifth positioning surface 315 is located are arranged as arc surfaces.

[0048] In this embodiment, the surface of the slider 35 in contact with the sill beam is configured as an arc surface to avoid damage to the sill beam caused by the contact during the movement of the slider 35.

[0049] Further, the positioning bracket 31 further includes a pressing plate 32 disposed above the installation groove. The pressing plate 32 can move up and down relative to the column, and a first force-bearing surface 321 and a second force-bearing surface 322 of the pressing plate 32 are correspondingly provided on both sides thereof to limit the left and right sill beams 4 and 5 in the vertical direction.

[0050] In this embodiment, the pressing plate 32 is provided to clamp and limit the upper parts of the left and right sill beams 4 and 5. Specifically, after the pressing plate 32 moves, the first force-bearing surface 321 of the pressing plate 32 abuts against the left third force-bearing surface 432 of the left sill beam 4, and the first force-bearing surface 321 and the third positioning surface 313 jointly limit the up and down movement of the left sill beam 4; after the pressing plate 32 moves, the second force-bearing surface 322 of the pressing plate 32 abuts against the right third force-bearing surface 532 of the right sill beam 5, and the second force-bearing surface 322 and the third positioning surface 313 jointly limit the up and down movement of the right sill beam 5.

[0051] Obviously, the pressing plate 32 should be able to move up and down relative to the column to facilitate the clamping of the sill beam. In this embodiment, it is realized by the pull rod 33 shown in the figure. The pull rod 33 is fixedly connected to the positioning bracket 31. The pressing plate 32 is threaded on the pull rod 33, and a nut is used to apply a force-bearing point to the sill beam on the force-bearing surface of the pressing plate 32, applying a force downward on the sill beam.

[0052] In this embodiment, a cover plate 34 is further provided on the side of the column to limit the movement of components such as the slider 35, the limit block, and the spring along the length direction of the bridge plate 1.

[0053] In summary, the fixture structure for automobile sill beam processing provided by the present invention is simple to operate and convenient to use. It can simultaneously perform cutting processing on the left and right sill beams of the automobile at one time, with automatic and rapid clamping, and the clamping force can be adjusted and controlled. It not only has high production and processing efficiency, but also has stable quality, effectively improving the production efficiency and qualified rate of products.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The fixture structure for processing the automotive sill beam is characterized in that: It includes a bridge plate (1), a clamping mechanism (3) and a positioning block (2). There are at least two clamping mechanisms (3). The two clamping mechanisms (3) are fixedly connected to both ends in the length direction of the bridge plate (1). The clamping mechanism (3) is a symmetric structure. On the plane perpendicular to the length direction of the bridge plate (1), the clamping mechanism (3) includes two symmetrically arranged mounting grooves, which are respectively used for the positioning and clamping of the left sill beam (4) and the right sill beam (5). The positioning block (2) is fixedly connected to the bridge plate (1). On the side of the positioning block (2) close to the clamping mechanism (3), there are a first mounting surface (21) and a second mounting surface (22) respectively. The positions of the first mounting surface (21) and the second mounting surface (22) correspond to the two mounting grooves respectively, so as to limit the left sill beam (4) and the right sill beam (5) in the length direction of the bridge plate (1).

2. The fixture structure for processing the automotive sill beam according to claim 1, characterized in that: The clamping mechanism (3) includes a positioning bracket (31), a slider (35) and a driving device (6). On the plane perpendicular to the length direction of the bridge plate (1), the positioning bracket (31) includes a bottom plate, a middle column and side plates on both sides. The upper surface of the bottom plate of the positioning bracket (31) is higher than the upper surface of the bridge plate (1) as the third positioning surface (313). The inner side of the side plate of the positioning bracket (31) forms a positioning surface. An installation groove is formed between the side plate and the column of the positioning bracket (31). There are multiple sliders (35) arranged on the column, and the driving device (6) can drive the multiple sliders (35) to move to both sides of the column respectively.

3. The fixture structure for processing the automotive sill beam according to claim 2, characterized in that: at On the plane perpendicular to the length direction of the bridge plate (1), a first positioning surface (311) and a fifth positioning surface (315), a second positioning surface (312) and a fourth positioning surface (314) are symmetrically arranged on the side plates on both sides of the positioning bracket (31). The first positioning surface (311) and the second positioning surface (312) are located on the same side of the positioning bracket (31), and the height of the first positioning surface (311) is higher than that of the second positioning surface (312). The height of the fifth positioning surface (315) is higher than that of the fourth positioning surface (314), so as to realize the abutting and fixed limiting of the left sill beam (4) and the right sill beam (5) at different heights up and down.

4. The fixture structure for processing the automotive sill beam according to claim 3, characterized in that: Corresponding to the positioning surfaces on the side plates of the positioning bracket (31), a first slider (351), a second slider (352), a fourth slider (354) and a fifth slider (355) are arranged on the column. The first slider (351) and the second slider (352) can slide relative to the column towards the side of the side plate where the first positioning surface (311) is located, and the fourth slider (354) and the fifth slider (355) can slide relative to the column towards the side of the side plate where the fifth positioning surface (315) is located.

5. The fixture structure for automobile sill beam processing according to claim 4, characterized in that: The first slider (351), the second slider (352), the fourth slider (354) and the fifth slider (355) can move synchronously under the action of the driving device (6).

6. The fixture structure for processing the automotive sill beam according to claim 5, characterized in that: The driving device (6) includes a cylinder (63) and steel balls (61). The steel balls (61) can move back and forth under the push of the cylinder (63). A third slider (353) is also provided on the column. The third slider (353) is vertically arranged, and symmetric wedge-shaped structures are provided at the upper end of the third slider (353). The first slider (351) and the fifth slider (355) are respectively provided with inclined surfaces adapted to the wedge-shaped structures, and both the first slider (351) and the fifth slider (355) are in contact with the third slider (353), so that when the third slider (353) moves upward, it can push the first slider (351) and the fifth slider (355) to move synchronously to both sides of the column; inclined surfaces are provided at the lower end of the third slider (353), the end of the second slider (352) close to the third slider (353), and the end of the fourth slider (354) close to the third slider (353), for contacting with the steel balls (61), so that under the push of the cylinder (63), the upward movement of the third slider (353), the movement of the second slider (352) and the fourth slider (354) to both sides are synchronous.

7. The fixture structure for automobile sill beam processing according to claim 6, characterized in that: The first slider (351), the second slider (352), the fourth slider (354) and the fifth slider (355) are respectively provided with limit blocks (36). The limit blocks (36) are fixedly installed on the column, for cooperating with the limit grooves to limit the stroke of the sliders (35), and springs are also provided in the limit grooves for the sliders (35) to reset.

8. The fixture structure for processing the automotive sill beam according to claim 4, characterized in that: The force application center point of the first slider (351) corresponds to the geometric center of the first positioning surface (311), the force application center point of the second slider (352) corresponds to the geometric center of the second positioning surface (312), the force application center point of the fourth slider (354) corresponds to the geometric center of the fourth positioning surface (314), and the force application center point of the fifth slider (355) corresponds to the geometric center of the fifth positioning surface (315).

9. The fixture structure for processing the automotive sill beam according to claim 4, characterized in that: The sides of the first slider (351) and the second slider (352) close to the side plate where the first positioning surface (311) is located are set as arc surfaces, and the sides of the fourth slider (354) and the fifth slider (355) close to the side plate where the fifth positioning surface (315) is located are set as arc surfaces.

10. The fixture structure for processing the automotive sill beam according to any one of claims 2-9, characterized in that: The positioning bracket (31) further includes a pressing plate (32) arranged above the installation groove. The pressing plate (32) can move up and down relative to the column, and pressing plate first force application surfaces (321) and pressing plate second force application surfaces (322) are respectively provided on both sides of the pressing plate (32) to realize the vertical limit on the left sill beam (4) and the right sill beam (5).

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