Three-axis automobile part welding clamp

Abstract

The utility model discloses a three-axis automobile part welding clamp which comprises horizontal iron, a welding workbench, a linear walking assembly, a first welding clamping frame, an arc-shaped walking assembly and a second welding clamping frame. The welding workbench is fixed on the horizontal iron; the linear walking assembly and the arc-shaped walking assembly are fixed to the upper end face of the welding workbench. The first welding clamping frame linearly walks through the linear walking assembly. The second welding clamping frame axially rotates through the arc-shaped walking assembly; the first welding clamping frame and the second welding clamping frame are each provided with a height-adjustable clamping plate. The two welding pieces are fixed through the first welding clamping frame and the second welding clamping frame correspondingly. The second welding clamping frame adjusts the welding angle between the welding part on the first welding clamping frame and the welding part on the second welding clamping frame; the welding angle of the two welding components is more convenient to adjust, and the two welding components are reliably fixed through the first welding clamping frame and the second welding clamping frame.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile accessory machining equipment, and particularly relates to a three-shaft automobile part welding clamp. BACKGROUND

[0002] In the production and processing of automobile parts, there are often multi-shaft or tree-shaped components. Such components are formed by welding two or more rods at a specific angle, and then the next step of processing is performed. The traditional method is to place the components to be welded on a welding table. However, during the welding process, the calibration and positioning of the component angle require a lot of time, and the welded parts are not fixed firmly, which not only affects the quality of the finished product but also affects the further processing of the parts. SUMMARY

[0003] The present application aims to solve the above problems and provides a three-shaft automobile part welding clamp.

[0004] A three-shaft automobile part welding clamp, comprising: a ground iron, a welding workbench, a linear walking assembly, a first welding clamping frame, an arc-shaped walking assembly, and a second welding clamping frame. The welding workbench is fixed to the ground iron. The linear walking assembly and the arc-shaped walking assembly are fixed to the upper end surface of the welding workbench. One first welding clamping frame is provided, and the first welding clamping frame linearly walks through the linear walking assembly. The arc-shaped walking assembly comprises: an arc-shaped rail fixing plate and arc-shaped rails. An arc scale mark is provided on one side of the arc-shaped rail fixing plate. Two arc-shaped rails are provided, and the two arc-shaped rails are concentric circular arc tracks. The two arc-shaped rails are fixed to the arc-shaped rail fixing plate. The arc centers of the two arc-shaped rails coincide with the center axis of the arc scale mark, and the center axis intersects with the center line of the linear walking assembly. At least one second welding clamping frame is provided, and the second welding clamping frame slides on the arc-shaped rails. The second welding clamping frame rotates along the center axis of the arc scale mark. Height-adjustable clamping plates are provided on the first welding clamping frame and the second welding clamping frame. Two welded parts are fixed by the first welding clamping frame and the second welding clamping frame. The second welding clamping frame adjusts the welding angle of the welded parts on the first welding clamping frame and the second welding clamping frame.

[0005] The linear walking assembly comprises a linear rail bracket plate, a linear rail, a linear rack, a linear slider, a first positioning mechanism, and a linear slider connecting plate. Two linear rail bracket plates and two linear rails are provided. The two linear rails are fixed to one side of the welding workbench 2 through the two linear rail bracket plates. The linear rack is fixed to the lower side of one of the linear rails. Two linear sliders are sleeved on each linear rail. The linear slider connecting plate is fixed to the upper end surface of the four linear sliders by bolts. The first welding clamping frame is fixed at any position of the linear rail by the first positioning mechanism.

[0006] The first positioning mechanism comprises a first lock rod, a first lock rod spring, wherein one of the straight line sliders is provided with a first lock rod connecting shaft, one side of the first lock rod connecting shaft is provided with a first spring upper abutting edge, one side of the first lock rod is provided with a first lock tongue, one side of the first lock tongue is provided with a first spring lower abutting edge, one side of the first spring lower abutting edge is provided with a first lock rod shaft hole, the first lock rod shaft hole is sleeved on the first lock rod connecting shaft, the other side of the first lock rod is a long rod, the other end of the first lock rod is provided with a first pressing handle, the first lock rod spring is fixed between the first spring upper abutting edge and the first spring lower abutting edge, and the first lock tongue can be clamped in one tooth of the straight line rack.

[0007] The first welding clamping frame comprises a first fixed rod, a first T-shaped clamping frame, a first clamping plate, a first locking nut, and a first fixed pin shaft. The first fixed rod is a polygonal column, and the first fixed rod is fixed on the straight line slider connecting plate. The first T-shaped clamping frame is provided with a first polygonal sleeve pipe below, and the first polygonal sleeve pipe is sleeved on the first fixed rod. A plurality of first fixed rod pin holes are arranged on the rod body of the first fixed rod. At least one first polygonal sleeve pipe pin hole is arranged on the first polygonal sleeve pipe. The first polygonal sleeve pipe pin hole and the first fixed rod pin hole have the same hole diameter. One first polygonal sleeve pipe pin hole and one first fixed rod pin hole are connected and fixed through the first fixed pin shaft.

[0008] The range of the arc range marked on the arc ruler is ±90 degrees.

[0009] The arc-shaped walking assembly further comprises an arc-shaped rack, an arc rail slider, a second positioning mechanism, an arc rail slider connecting plate, and an angle pointer. The arc-shaped rack is arranged on one of the arc-shaped rails. Two arc rail sliders are sleeved on each arc-shaped rail, and the arc rail slider connecting plate is fixed to the upper end surface of the four arc rail sliders. The second positioning mechanism is fixed to one side of one of the arc rail sliders. The second welding clamping frame is fixed at any angle on the arc-shaped rail through the second positioning mechanism.

[0010] The arc-shaped walking assembly and the second welding clamping frame are both provided with two, the two arc-shaped walking assemblies have the same structure, and the two second welding clamping frames have the same structure. The two second welding clamping frames rotate coaxially on the arc-shaped rail.

[0011] The welding workbench comprises a workbench, welding table foot supports, and an extension angle frame. The welding table foot supports are fixed on both sides of the workbench. The extension angle frame is fixed to one side of the workbench that needs to be extended. The arc rail fixing plate extends from the workbench, the extension angle frame is fixed to the side of the workbench, and the extension angle frame supports the extension part of the arc rail fixing plate. The welding table foot supports are fixed to the ground iron through T-shaped bolts.

[0012] The technical scheme provides a three-axle automobile part welding clamp, which comprises a ground iron, a welding workbench, a linear walking assembly, a first welding clamping frame, an arc-shaped walking assembly, and a second welding clamping frame; the welding workbench is fixed on the ground iron; the linear walking assembly and the arc-shaped walking assembly are fixed on the upper end surface of the welding workbench; the first welding clamping frame linearly walks through the linear walking assembly; the second welding clamping frame rotates in the axial direction through the arc-shaped walking assembly; height-adjustable clamping plates are arranged on the first welding clamping frame and the second welding clamping frame; two welding pieces are fixed through the first welding clamping frame and the second welding clamping frame respectively; the second welding clamping frame adjusts the welding angle of the welding piece on the first welding clamping frame and the welding piece on the second welding clamping frame; the welding angle of the two welding components is more convenient to adjust, and the first welding clamping frame and the second welding clamping frame reliably fix the two welding components. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a whole schematic view of the three-axle automobile part welding clamp of the utility model;

[0014] Figure 2 is a rear axle side view of the three-axle automobile part welding clamp of the utility model;

[0015] Figure 3 is a linear guide rail assembly schematic view of the three-axle automobile part welding clamp of the utility model;

[0016] Figure 4 is a linear guide rail structure schematic view of the three-axle automobile part welding clamp of the utility model;

[0017] Figure 5 is a linear guide rail local schematic view of the three-axle automobile part welding clamp of the utility model;

[0018] Figure 6 is an arc-shaped guide rail structure schematic view of the three-axle automobile part welding clamp of the utility model;

[0019] Figure 7 is an arc-shaped guide rail local schematic view of the three-axle automobile part welding clamp of the utility model;

[0020] Figure 8 is a lifting adjustment clamping structure schematic view of the three-axle automobile part welding clamp of the utility model.

[0021] In the figure: 1, ground iron, 2, welding workbench, 21, workbench surface, 22, welding table foot stand, 23, extension angle frame, 31, straight rail frame plate, 32, straight rail, 33, straight rack, 34, straight slide block, 341, first lock rod connecting shaft, 342, first spring upper stop, 35, first positioning mechanism, 351, first lock rod, 3511, first lock tongue, 3512, first spring lower stop, 3513, first pressing handle, 352, first lock rod spring, 36, straight slide block connecting plate, 4, first welding clamping frame, 41, first fixed rod, 411, first fixed rod pin hole, 42, first T-shaped clamping frame, 421, first multi-edge sleeve, 422, first multi-edge sleeve pin hole, 423, first lower clamping plate, 424, first clamping plate screw, 43, first clamping plate, 431, first screw through hole, 44, first locking nut, 45, first fixed pin shaft, 51, arc rail fixed plate, 511, arc degree ruler mark, 52, arc rail, 53, arc rack, 54, arc rail slide block, 542, second spring upper stop, 55, second positioning mechanism, 551, second lock rod, 5511, second lock tongue, 5512, second spring lower stop, 5513, second pressing handle, 552, second lock rod spring, 56, arc rail slide block connecting plate, 57, angle pointer, 6, second welding clamping frame, 61, second fixed rod, 62, second T-shaped clamping frame, 63, second clamping plate, 64, second locking nut, 65, second fixed pin shaft. DETAILED DESCRIPTION

[0022] The technical solutions will be further described in detail below with reference to the drawings of the technical solutions. The described embodiments are only a part of the technical solutions, and not all the embodiments. Based on the technical solutions, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. EMBODIMENT

[0023] Referring to Figures 1 to 8 As shown in the figure, a three-axis automobile part welding clamp comprises a ground iron 1, a welding workbench 2, a straight walking assembly, a first welding clamping frame 4, an arc walking assembly, and a second welding clamping frame 6.

[0024] The welding workbench 2 comprises a workbench surface 21, a welding table foot stand 22, and an extension angle frame 23.

[0025] The welding table foot stand 22 is provided with two, and the two welding table foot stands 22 are respectively fixed on the two sides of the workbench surface 21 by bolts; that is, the welding table foot stands 22 are fixed on the two sides of the workbench surface 21.

[0026] The extension angle frame 23 is provided with several, and the extension angle frame 23 is fixed on the side of the workbench top 21 which needs to be extended; the lower end of the welding base frame 22 is fixed on the ground iron 1 through a T-shaped bolt.

[0027] The linear walking assembly comprises a linear rail frame plate 31, a linear rail 32, a linear rack 33, a linear slider 34, a first positioning mechanism 35, a linear slider connecting plate 36,

[0028] The linear rail frame plate 31 and the linear rail 32 are both provided with two, the linear rail 32 is fixed on the linear rail frame plate 31 through a bolt; the two linear rail frame plates 31 are arranged in parallel; the linear rail frame plate 31 is fixed on one side of the welding workbench 2 through bolt locking; the linear rack 33 is provided with one, and one linear rack 33 is fixed on the side of one of the linear rails 32;

[0029] The linear slider 34 is provided with four, and two linear sliders 34 are sleeved on each linear rail 32; the linear slider connecting plate 36 is fixed on the upper end face of the four linear sliders 34 through a bolt; the linear slider connecting plate 36 slides on the linear rail 32 through the linear slider 34.

[0030] The first positioning mechanism is fixed on one of the linear sliders 34 provided with the linear rack 33;

[0031] The first positioning mechanism 35 comprises a first lock rod 351 and a first lock rod spring 352; one side of the linear slider 34 is provided with a first lock rod connecting shaft 341, and one side of the first lock rod connecting shaft 341 is provided with a first spring upper abutting edge 342;

[0032] One side of the first lock rod 351 is provided with a first lock tongue 3511, and the first lock tongue 3511 is provided with a first spring lower abutting edge 3512 beside; a first lock rod shaft hole is provided beside the first spring lower abutting edge, and the first lock rod shaft hole is sleeved on the first lock rod connecting shaft 341; the other side of the first lock rod 351 is a long rod, and the other end of the first lock rod 351 is provided with a first pressing handle 3513; the first lock rod spring 352 is fixed between the first spring upper abutting edge 342 and the first spring lower abutting edge 3512;

[0033] The first lock tongue 3511 can be clamped in one tooth of the linear rack 33; the first lock tongue 3511 can be separated upward from the tooth of the linear rack 33 by pressing the first pressing handle 3513 downward; the first lock tongue 3511 is clamped in one tooth of the linear rack 33 under the action of the first lock rod spring 352 by releasing the pressing of the first pressing handle 3513.

[0034] The first welding clamping frame 4 comprises a first fixed rod 41, a first T-shaped clamping frame 42, a first clamping plate 43, a first locking nut 44, and a first fixed pin 45.

[0035] The first fixed rod 41 is fixed on the linear slide connecting plate 36 through a bolt below the first fixed rod 41. The first fixed rod 41 is a polygonal column, and a plurality of first fixed rod pin holes 411 are arranged on the rod body of the first fixed rod 41. The axial lines of the plurality of first fixed rod pin holes 411 are parallel. The first fixed rod pin holes 411 pass through two parallel end faces of the rod body of the first fixed rod 41.

[0036] The first T-shaped clamping frame 42 is provided with a first polygonal sleeve 421 below the first T-shaped clamping frame 42, and a first lower clamping plate 423 above the first T-shaped clamping frame 42. The first polygonal sleeve 421 is provided with at least one first polygonal sleeve pin hole 422.

[0037] The first polygonal sleeve 421 is sleeved on the first fixed rod 41. The first polygonal sleeve pin hole 422 and the first fixed rod pin hole 411 have the same hole diameter. The first polygonal sleeve pin hole 422 can be docked with one of the first fixed rod pin holes 411. When the axial centers of the first polygonal sleeve pin hole 422 and the first fixed rod pin hole 411 coincide, the first fixed pin 45 can be sleeved therein. That is, the first T-shaped clamping frame 42 is sleeved on the first fixed rod 41 below and is adjusted in height. The first fixed rod 41 and the first polygonal sleeve 421 are connected and fixed through the first fixed pin 45.

[0038] The first lower clamping plate 423 is provided with a first clamping plate screw 424. The first clamping plate 43 is provided with a first screw through hole 431. The first clamping plate screw 424 is sleeved in the first screw through hole 431. The first locking nut 44 is sleeved on the first clamping plate screw 424. The first clamping plate 43 is locked on the first lower clamping plate 423 through the first locking nut 44.

[0039] The arc-shaped walking assembly is provided with two groups, and the two groups of arc-shaped walking assemblies have the same structure.

[0040] The arc-shaped walking assembly comprises an arc-shaped rail fixing plate 51, an arc-shaped rail 52, an arc-shaped rack 53, an arc rail slide block 54, a second positioning mechanism 55, an arc rail slide block connecting plate 56, and an angle pointer 57.

[0041] The arc-shaped rail fixing plate 51 is fixed on the workbench surface 21 by bolts; the arc-shaped rail fixing plate 51 extends from the side of the workbench surface 21, the extension angle bracket 23 is fixed on the side of the workbench surface 21, and the extension angle bracket 23 supports the extension part of the arc-shaped rail fixing plate 51; one side of the arc-shaped rail fixing plate 51 is provided with an arc scale mark 511; the arc-shaped rail 52 is provided with two, and the two arc-shaped rails 52 are concentric circular arc tracks; the two arc-shaped rails 52 are fixed on the arc-shaped rail fixing plate 51; the arc-shaped rack 53 is arranged on one of the arc-shaped rails 52; the arc-shaped rack 53 is preferably arranged on the outer arc-shaped rail 52;

[0042] The arc centers of the two arc-shaped rails 52 coincide with the center axis of the arc scale mark 511, and the center axis intersects with the center line of the straight line walking assembly;

[0043] The range of the arc marked on the arc scale mark 511 is ±90 degrees;

[0044] The arc rail slider 54 is provided with four, and the four arc rail sliders 54 are sleeved on the arc-shaped rail 52; the arc rail slider connecting plate 56 is fixed on the upper end surface of the four arc rail sliders 54 by bolts; that is, the four arc rail sliders 54 are connected by the arc rail slider connecting plate 56;

[0045] The second positioning mechanism 55 has the same structure as the first positioning mechanism 35; the second positioning mechanism 55 is fixed on one side of one of the arc rail sliders 54.

[0046] The second positioning mechanism 55 includes a second lock rod 551 and a second lock rod spring 552; one side of the arc rail slider 54 is provided with a second lock rod connecting shaft, one side of the second lock rod connecting shaft is provided with a second spring upper abutting edge 542;

[0047] One side of the second lock rod 551 is provided with a second lock tongue 5511, and the second lock tongue 5511 is provided with a second spring lower abutting edge 5512 beside it; the second spring lower abutting edge is provided with a second lock rod shaft hole, which is sleeved on the second lock rod connecting shaft; the other side of the second lock rod 551 is a long rod, and the other end of the second lock rod 551 is provided with a second pressing handle 5513; the second lock rod spring 552 is fixed between the second spring upper abutting edge 542 and the second spring lower abutting edge 5512;

[0048] The second lock tongue 5511 can be clamped in one tooth of the arc-shaped rack 53; the second lock tongue 5511 can be disengaged upward from the tooth of the arc-shaped rack 53 by pressing the second pressing handle 5513 downward; the second lock tongue 5511 is clamped in one tooth of the arc-shaped rack 53 under the action of the second lock rod spring 552 by releasing the second pressing handle 5513;

[0049] The included angle of the two side edges of the arc rail slider connecting plate 56 is 15 degrees; the inner side of the front end of the arc rail slider connecting plate 56 is provided with an angle pointer 57;

[0050] The second welding clamping frame 6 is the same in structure as the first welding clamping frame 4; the lower end of the second welding clamping frame 6 is fixed on the arc rail slider connecting plate 56;

[0051] The second welding clamping frame 6 comprises a second fixed rod 61, a second T-shaped clamping frame 62, a second clamping plate 63, a second locking nut 64 and a second fixed pin 65.

[0052] The lower end of the second fixed rod 61 is fixed on the upper end of the arc rail slider connecting plate 56 through a bolt; the second fixed rod 61 is a multi-prism, and a plurality of second fixed rod pin holes are arranged on the rod body of the second fixed rod 61; the axial lines of the second fixed rod pin holes are parallel; the second fixed rod pin holes penetrate through the two parallel end faces of the rod body of the second fixed rod 61;

[0053] The lower end of the second T-shaped clamping frame 62 is provided with a second multi-prism sleeve, and the upper end of the second T-shaped clamping frame 62 is a second lower clamping plate; at least one second multi-prism sleeve pin hole is arranged on the second multi-prism sleeve;

[0054] The second multi-prism sleeve is sleeved on the second fixed rod 61; the second multi-prism sleeve pin hole and the second fixed rod pin hole have the same diameter; the second multi-prism sleeve pin hole can be connected with one second fixed rod pin hole, and when the axial center of the second multi-prism sleeve pin hole coincides with that of the second fixed rod pin hole, the second fixed pin 65 can be sleeved therein; that is, the second T-shaped clamping frame 62 is sleeved on the second fixed rod 61 and is adjusted in height, and the second fixed rod 61 and the second multi-prism sleeve are connected and fixed through the second fixed pin 65;

[0055] The second lower clamping plate is provided with a second clamping plate screw; the second clamping plate 63 is provided with a second screw through hole; the second clamping plate screw is sleeved in the second screw through hole; the second locking nut 64 is sleeved on the second clamping plate screw; and the second clamping plate 63 is locked on the second lower clamping plate through the second locking nut 64.

Claims

1. A three-axis welding fixture for automotive parts, comprising: The welding workbench (2) is fixed on the ground rail (1), a linear travel assembly, a first welding clamp (4), an arc-shaped travel assembly, and a second welding clamp (6). The welding workbench (2) is fixed on the ground rail (1); the linear travel assembly and the arc-shaped travel assembly are fixed on the upper surface of the welding workbench (2); one first welding clamp (4) is provided, and the first welding clamp (4) travels linearly through the linear travel assembly; the arc-shaped travel assembly includes an arc-shaped rail fixing plate (51) and an arc-shaped rail (52), with an arc scale (511) on one side of the arc-shaped rail fixing plate (51); two arc-shaped rails (52) are provided, and the two arc-shaped rails (52) are concentric circular arc tracks; the two arc-shaped rails (52) are fixed on the ground rail (1). On the arc-shaped rail fixing plate (51); the arc axis of the two arc-shaped rails (52) coincides with the arc axis of the arc scale (511), and the arc axis intersects with the center line of the linear travel assembly; at least one second welding clamp (6) is provided, and the second welding clamp (6) slides on the arc-shaped rail (52); the second welding clamp (6) rotates along the arc axis of the arc scale (511); both the first welding clamp (4) and the second welding clamp (6) are provided with height-adjustable clamping plates; the two welded parts are fixed by the first welding clamp (4) and the second welding clamp (6) respectively; the second welding clamp (6) adjusts the welding angle between the welded parts on the first welding clamp (4) and the welded parts on the second welding clamp (6).

2. The three-axis automotive parts welding fixture according to claim 1, characterized in that: The linear travel assembly includes a linear track frame (31), a linear track (32), a linear rack (33), a linear slider (34), a first positioning mechanism (35), and a linear slider connecting plate (36). There are two linear track frames (31) and two linear tracks (32). The two linear tracks (32) are fixed to one side of the welding workbench (2) by the two linear track frames (31). The linear rack (33) is fixed below one side of one of the linear tracks (32). Two linear sliders (34) are sleeved on each linear track (32). The linear slider connecting plate (36) is fixed to the upper end face of the four linear sliders (34) by bolts. The first welding clamp (4) is fixed at any position on the linear track (32) by the first positioning mechanism (35).

3. The three-axis automotive parts welding fixture according to claim 2, characterized in that: The first positioning mechanism (35) includes: a first locking rod (351) and a first locking rod spring (352); a first locking rod connecting shaft (341) is provided on the side of the linear slider (34) of one of them, and a first spring upper abutment (342) is provided on one side of the first locking rod connecting shaft (341); a first locking tongue (3511) is provided on one side of the first locking rod (3511), and a first spring lower abutment (3512) is provided next to the first locking tongue (3511); a first locking rod shaft connection hole is provided next to the first spring lower abutment, and the first locking rod shaft connection hole is sleeved on the first locking rod connecting shaft (341); the other side of the first locking rod (351) is a long rod, and a first pressure handle (3513) is provided at the other end of the first locking rod (351); the first locking rod spring (352) is fixed between the first spring upper abutment (342) and the first spring lower abutment (3512); the first locking tongue (3511) can be engaged in one tooth of the linear rack (33).

4. The three-axis automotive parts welding fixture according to claim 3, characterized in that: The first welding clamp (4) includes: a first fixing rod (41), a first T-shaped clamp (42), a first clamping plate (43), a first locking nut (44), and a first fixing pin (45); the first fixing rod (41) is a polygonal prism and is fixed on the linear slider connecting plate (36); a first polygonal sleeve (421) is provided below the first T-shaped clamp (42) and is sleeved on the first fixing rod (41); a plurality of first fixing rod pin holes (411) are provided on the rod body of the first fixing rod (41); at least one first polygonal sleeve pin hole (422) is provided on the first polygonal sleeve (421); the first polygonal sleeve pin hole (422) and the first fixing rod pin hole (411) have the same diameter; a first polygonal sleeve pin hole (422) and a first fixing rod pin hole (411) are connected and fixed by the first fixing pin (45).

5. The three-axis automotive parts welding fixture according to claim 4, characterized in that: The radian range marked on the radian scale (511) is ±90 degrees.

6. The three-axis automotive parts welding fixture according to claim 5, characterized in that: The arc-shaped walking assembly further includes: an arc-shaped rack (53), an arc-shaped slider (54), a second positioning mechanism (55), an arc-shaped slider connecting plate (56), and an angle pointer (57); the arc-shaped rack (53) is mounted on one of the arc-shaped rails (52); two arc-shaped sliders (54) are fitted on each arc-shaped rail (52), and the arc-shaped slider connecting plate (56) is fixed on the upper end face of the four arc-shaped sliders (54); the second positioning mechanism (55) is fixed on one side of one of the arc-shaped sliders (54); the second welding clamp (6) is fixed at any angle of the arc-shaped rail (52) by the second positioning mechanism (55).

7. The three-axis automotive parts welding fixture according to claim 6, characterized in that: The arc-shaped walking component and the second welding clamp (6) are provided in two units. The two arc-shaped walking components have the same structure, and the two second welding clamps (6) have the same structure. The two second welding clamps (6) rotate coaxially on the arc-shaped rail (52).

8. The three-axis automotive parts welding fixture according to claim 6, characterized in that: The welding workbench (2) includes: a workbench surface (21), welding table legs (22), and an extension bracket (23); welding table legs (22) are fixed on both sides of the workbench surface (21); the extension bracket (23) is fixed on the side of the workbench surface (21) that needs to be extended; the side of the arc-shaped rail fixing plate (51) extends out from the workbench surface (21), the extension bracket (23) is fixed on the side of the workbench surface (21), and the extension of the arc-shaped rail fixing plate (51) is supported above the extension bracket (23); the lower end of the welding table legs (22) is fixed to the ground rail (1) by T-bolts.

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