A kind of anti-deformation fixture for welding automobile parts

Abstract

The utility model discloses an anti-deformation fixture for welding automobile parts, which comprises: a workpiece fixture frame, a rotating frame, a clamping mandrel, a fixture table and a linkage auxiliary rod; the workpiece fixture frame 1 is provided with two groups, and the structures of the two groups of workpiece fixture frames are completely the same; the two groups of workpiece fixture frames are respectively fixed on both sides of the upper end surface of the fixture table; the workpiece fixture frame is provided with two groups of C-shaped planetary gear frames; the rotating frame is sleeved on the two groups of C-shaped planetary gear frames; one end of the upper frame of the rotating frame is provided with a plurality of linkage rod inlays arranged in an annular array, and the rotating frame on each side is provided with a plurality of clamping mandrels; the ends of two column-like welded parts are butted and clamped by the clamping mandrels on both sides; the two ends of the linkage auxiliary rod can be embedded in the linkage rod inlay and drive the rotating frames on both sides to rotate synchronously; the clamping mandrel clamp clamps two pipe fittings to prevent deformation caused by heat during welding, which affects the welding and the quality of the finished welded products.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile profile welding auxiliary tools, and in particular relates to an automobile parts welding anti-deformation clamp. Background Art

[0002] There are often beams or columns on the car frame that play a bearing role. When two pipe profiles need to be butt-welded, the two pipes will undergo elastic deformation during welding due to different stresses. The different directions of the elastic deformation of the two profiles will affect the quality of the welded product. In order to cope with the deformation of the two pipe profiles during welding, a welding fixture is required. However, for the rotating pipe profile, the clamping position needs to be constantly changed and the workpiece needs to be turned over to complete the welding. Repeated clamping of the workpiece is not only time-consuming and labor-intensive, but also causes the stress release of the bending elastic deformation, causing deformation of the parts. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problem and to provide an anti-deformation fixture for welding automobile parts.

[0004] A welding anti-deformation fixture for automobile parts, comprising: a workpiece fixture frame 1, a rotating frame 2, a clamping mandrel 3, a fixture table 4, and a linkage auxiliary rod 5; the workpiece fixture frame 1 is provided with two groups, and the two groups of workpiece fixture frames 1 have exactly the same structure; the two groups of workpiece fixture frames 1 are respectively fixed on both sides of the upper end surface of the fixture table 4; the workpiece fixture frame 1 is provided with a first planetary gear frame 12 and a second planetary gear frame 13, and the first planetary gear frame 12 and the second planetary gear frame 13 form a C-shaped planetary gear frame; the C-shaped planetary gear frame is provided with a planetary gear frame Wheel; a rotating frame 2 is sleeved in both sets of workpiece fixture frames 1; a plurality of linkage rod inlays 21 arranged in a circular array are provided at one end of the upper frame of the rotating frame 2, and a gear ring 22 is provided on the frame body of the rotating frame 2; the planetary gears and the gear ring are meshed for transmission; a plurality of clamping push rods 3 are provided in the rotating frame 2 on each side; the ends of the two column-like welded parts are butt-jointed, and the bodies of the two column-like welded parts are clamped by the clamping push rods 3 on each side respectively; the two ends of the linkage auxiliary rod 5 can be embedded in the linkage rod inlays 21; the hand-held linkage auxiliary rod 5 drives the rotating frames 2 on both sides to rotate synchronously.

[0005] The workpiece fixture frame 1 is also provided with a fixture frame bottom plate 11, and two sets of C-shaped planetary gear frames are provided on each side of the fixture frame bottom plate 11; the C-shaped planetary gear frame is formed by connecting two first planetary gear frames 12 and second planetary gear frames 13 with the same symmetry in structure; the upper ends of the first planetary gear frames 12 and the second planetary gear frames 13 are arc-shaped frames with a third of a circle; a plurality of first gear shafts 121 are provided on the vertical surface of the first planetary gear frame 12; each first gear shaft 121 is axially connected to a first planetary gear 122; a plurality of second gear shafts 131 are provided on the vertical surface of the second planetary gear frame 13; each second gear shaft 131 is axially connected to a second planetary gear 132;

[0006] An outer polygonal flange 23 is provided in the middle of the slewing frame 2; the outer polygonal flange 23 is sleeved between two sets of C-shaped planetary gear frames.

[0007] The rotating frame 2 is also provided with a plurality of clamping rod bolt holes 24; the axis lines of the plurality of pairs of clamping rod bolt holes 24 intersect on the normal line of the central axis of the rotating frame 2; and a clamping mandrel 3 is provided in each clamping rod bolt hole.

[0008] The clamping push rod 3 includes: a push rod head 31, a push rod body 32, and a push rod spring 33; the push rod head 31 is fixed to the front end of the push rod body 32; the push rod body 32 is screwed into the clamping rod bolt hole 24; a screwing portion 321 is provided at the rear end of the push rod body 32; the push rod spring 33 is sleeved between the push rod head 31 and the inner side of the clamping rod bolt hole 24.

[0009] The fixture table 4 is provided with an upper table 41, a lower table 42, and a supporting column 43; the upper table 41 and the lower table 42 are stacked and fixed on the supporting column 43; one side of the upper table 41 is provided with a fixed locking screw hole 412; the other side of the upper table 41 is provided with a plurality of parallel locking grooves 413; the two groups of workpiece fixture frames 1 are divided into: a left workpiece fixture frame 1L and a right workpiece fixture frame 1R, the left workpiece fixture frame 1L is locked at the locking screw hole 412; the right workpiece fixture frame 1R is locked on the locking groove 413.

[0010] An operation area recess 411 is formed on one side of the upper table 41 .

[0011] The technical scheme provides that the utility model discloses an anti-deformation fixture for welding automobile parts, which comprises: a workpiece fixture frame, a rotating frame, a clamping push rod, a fixture table, and a linkage auxiliary rod; the workpiece fixture frame 1 is provided with 2 groups, and the structures of the 2 groups of workpiece fixture frames are completely the same; the 2 groups of workpiece fixture frames are respectively fixed on both sides of the upper end surface of the fixture table; the workpiece fixture frame is provided with 2 groups of C-shaped planetary gear frames; the rotating frame is sleeved on the 2 groups of C-shaped planetary gear frames; one end of the upper frame of the rotating frame is provided with a plurality of linkage rod inlays arranged in a circular array, and the rotating frame on each side is provided with a plurality of clamping push rods; the ends of two column-like welded parts are butted and clamped by the clamping push rods on both sides; the two ends of the linkage auxiliary rod can be embedded in the linkage rod inlay and drive the rotating frames on both sides to rotate synchronously; the clamping push rod clamp clamps two pipe fittings to prevent deformation caused by heat during welding, which affects the welding and the quality of the finished welding products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall schematic diagram of an anti-deformation fixture for welding automobile parts of the utility model;

[0013] Figure 2This is a schematic diagram of the structure of a fixture workbench for an anti-deformation fixture for welding automobile parts of the utility model;

[0014] Figure 3 This is a schematic diagram of a workpiece fixture of an anti-deformation fixture for welding automobile parts of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of a workpiece fixture frame of an anti-deformation fixture for welding automobile parts of the utility model;

[0016] Figure 5 This is a partial cross-sectional structural diagram of a workpiece fixture of an anti-deformation fixture for welding automobile parts of the utility model;

[0017] Figure 6 This is a schematic diagram of the use state of an anti-deformation fixture for welding automobile parts of the utility model;

[0018] In the figure: 1, workpiece fixture frame, 11, fixture frame bottom plate, 111, swivel frame locking screw hole, 112, bottom plate fixing screw hole, 12, first planetary gear frame, 121, first gear shaft, 122, first planetary gear, 13, second planetary gear frame, 131, second gear shaft, 132, second planetary gear, 2, swivel frame, 21, linkage rod inlay, 22, gear ring, 23, outer polygonal flange, 24, clamping rod bolt hole, 3, clamping push rod, 31, push rod head, 32, push rod body, 33, push rod spring, 4, fixture table, 41, upper table, 411, operating area recess, 412, fixed locking screw hole, 413, locking slide groove, 42, lower table, 43, support column, 5, linkage auxiliary rod, 51, limit cap head. DETAILED DESCRIPTION

[0019] The technical scheme will be further described clearly and completely below in conjunction with the accompanying drawings of the technical scheme. The described embodiments are only a part of the technical scheme, not all of the embodiments. Based on the technical scheme, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0020] See also Figures 1 to 5 As shown, an anti-deformation fixture for welding automobile parts comprises: a workpiece fixture frame 1, a rotating frame 2, a clamping mandrel 3, a fixture workbench 4, and a linkage auxiliary rod 5;

[0021] The workpiece fixture frame 1 is provided with two groups, and the two groups of workpiece fixture frames 1 have completely the same structure; the two groups of workpiece fixture frames 1 are respectively fixed on both sides of the upper end surface of the fixture table 4;

[0022] The workpiece fixture frame 1 comprises: a fixture frame base plate 11, a planetary gear frame; wherein the planetary gear frame is divided into a first planetary gear frame 12 and a second planetary gear frame 13; a plurality of rotating frame locking screw holes 111 and a plurality of base plate fixing screw holes 112 are provided on the fixture frame base plate 11; the first planetary gear frame 12 and the second planetary gear frame 13 have the same symmetrical structure; the upper ends of the first planetary gear frame 12 and the second planetary gear frame 13 are arc-shaped frames that are each one-third of a circle; four first gear shafts 121 are provided on the vertical surface of the first planetary gear frame 12; each of the first gear shafts 121 is axially connected to a first planetary gear 122; four second gear shafts 131 are provided on the vertical surface of the second planetary gear frame 13; each of the second gear shafts 131 is axially connected to a second planetary gear 132;

[0023] The first planetary gear carrier 12 and the second planetary gear carrier 13 are arranged opposite to each other and fixed to the bottom plate fixing screw holes 112 by bolts, and the axis of the upper arc frame of the second planetary gear carrier 13 coincides with the axis of the upper arc frame of the first planetary gear carrier 12;

[0024] There are two of the first planetary gear carrier 12 and the second planetary gear carrier 13, which are symmetrically arranged. Multiple locking bolts pass through the rotating frame locking screw holes 111 and are fixedly connected to the first planetary gear carrier 12 and the second planetary gear carrier 13; that is, the lower ends of the first planetary gear carrier 12 and the second planetary gear carrier 13 are locked and fixed on the fixture frame bottom plate 11.

[0025] The inner side of the rotating frame 2 is polygonal, and an opening is provided on one side of the rotating frame 2; that is, the rotating frame 2 is a C-shaped member; a connecting rod inlay 21 and a gear ring 22 are provided on the outer end surface of the rotating frame 2; there are multiple connecting rod inlays 21, and the multiple connecting rod inlays 21 are arranged in a ring array at one end of the rotating frame; both ends of the rotating frame 2 are provided with gear rings 22;

[0026] The axis lines of the plurality of linkage rod inlays 21 are spatially parallel to the axis line of the rotary frame 2;

[0027] The first planetary gear carrier 12 and the second planetary gear carrier 13 form a C-shaped planetary gear carrier; the rotating frame 2 is sleeved in the C-shaped planetary gear carrier; the first planetary gear 122 and the second planetary gear 132 are arranged in a ring array on the C-shaped planetary gear carrier; the first planetary gear 122 and the second planetary gear 132 are meshed with the gear ring 22; the first planetary gear 122 and the second planetary gear 132 and the gear ring 22 form a planetary gear mechanism; an outer polygonal flange 23 is provided in the middle of the rotating frame 2; the outer polygonal flange 23 is sleeved between the two sets of C-shaped planetary gear carriers;

[0028] The rotating frame 2 is also provided with a plurality of clamping rod bolt holes 24; the axis lines of the plurality of pairs of clamping rod bolt holes 24 intersect on the normal line of the central axis of the rotating frame 2; and a clamping mandrel 3 is provided in each clamping rod bolt hole.

[0029] The clamping push rod 3 comprises: a push rod head 31, a push rod body 32, and a push rod spring 33; the push rod head 31 is fixed to the front end of the push rod body 32; the push rod body 32 is screwed into the clamping rod bolt hole 24; the rear end of the push rod body 32 is provided with a screwing portion 321 for a hexagonal screwdriver (screwdriver); the push rod spring 33 is sleeved between the push rod head 31 and the inner side of the clamping rod bolt hole 24;

[0030] The fixture workbench 4 is provided with an upper table 41, a lower table 42, and a supporting column 43; the upper table 41 and the lower table 42 are stacked and fixed on the supporting column 43; an operation area recess 411 is provided on one side of the upper table 41; a fixing locking screw hole 412 is provided on one side of the upper table 41; and a plurality of parallel locking grooves 413 are provided on the other side of the upper table 41.

[0031] The workpiece fixture frame 1 is provided with two groups, and the structures of the two groups of workpiece fixture frames 1 are completely the same; the two groups of workpiece fixture frames 1 are sleeved with a rotating frame 2; the two groups of workpiece fixture frames 1 are relatively fixed on the upper table 41, and the bolts pass through the fixed locking screw holes 412 to be locked and connected with the left workpiece fixture frame 1L; the right workpiece fixture frame 1R is locked on the locking slide groove 413; the right workpiece fixture frame 1R can adjust the position on the locking slide groove 413, so that the distance between the left workpiece fixture frame 1L and the right workpiece fixture frame 1R is adjusted to the optimal operating distance;

[0032] The linkage auxiliary rod 5 is an auxiliary rod for synchronously linking the left and right slewing frames 2 ; at least one end of the linkage auxiliary rod 5 is provided with a limit cap 51 ; the rod body of the linkage auxiliary rod 5 can be embedded in the linkage rod embedding opening 21 .

[0033] Directions:

[0034] Using the anti-deformation fixture for welding automobile parts described in the technical solution, firstly, two tubular workpieces with rotating body characteristics are clamped in the left workpiece clamp frame 1L and the right workpiece clamp frame 1R respectively; the left workpiece clamp frame 1L and the right workpiece clamp frame 1R are both provided with a rotating frame 2; the linkage auxiliary rod 5 can drive the rotating frames 2 on both sides to rotate; after the two welded pieces are clamped and fixed by the clamping mandrels 3 on the rotating frames 2 on both sides, it is checked that the two welded tubular workpieces are on the same axis; after the welded gaps are relatively aligned, the welding gun welds the two tubular workpieces; during the welding process, two different pairs of linkage rod inlays 21 are replaced at both ends of the linkage auxiliary rod 5 to select the rotating frames 2 on both sides, so as to facilitate the rotary welding of the two tubular workpieces; when the rotating frame 2 is not fluctuated, the rotating frame 2 is kept relatively still by the meshing resistance of the planetary gear mechanism; to prevent vibration desoldering when the welding is just completed and the weldment has not hardened.

Claims

1. An anti-deformation fixture for welding automobile parts, comprising: A workpiece fixture frame (1), a rotating frame (2), a clamping mandrel (3), a fixture table (4), and a linkage auxiliary rod (5); characterized in that: the workpiece fixture frame (1) is provided with two groups, and the two groups of workpiece fixture frames (1) have completely the same structure; the two groups of workpiece fixture frames (1) are respectively fixed on both sides of the upper end surface of the fixture table (4); the workpiece fixture frame (1) is provided with a first planetary gear frame (12) and a second planetary gear frame (13), and the first planetary gear frame (12) and the second planetary gear frame (13) form a C-shaped planetary gear frame; the C-shaped planetary gear frame is provided with planetary gears; the two groups of workpiece fixture frames (1) are provided with a first planetary gear frame (12) and a second planetary gear frame (13) and a planetary gear frame (13) are provided on the workpiece fixture frame (1). A rotating frame (2) is sleeved in each of the component clamp frames (1); a plurality of linkage rod inlays (21) arranged in a ring array are provided at one end of the upper frame of the rotating frame (2); a gear ring (22) is provided on the frame body of the rotating frame (2); the planetary gear and the gear ring are meshed for transmission; a plurality of clamping push rods (3) are provided in each side of the rotating frame (2); the ends of two column-like welded components are butt-jointed, and the two column-like welded components are respectively clamped by the clamping push rods (3) on each side; both ends of the linkage auxiliary rod (5) can be embedded in the linkage rod inlays (21); and the linkage auxiliary rod (5) is held by hand to drive the rotating frames (2) on both sides to rotate synchronously.

2. The anti-deformation fixture for welding automobile parts according to claim 1, characterized in that: The workpiece fixture frame (1) is further provided with a fixture frame bottom plate (11), and two groups of C-shaped planetary gear frames are provided on each side of the fixture frame bottom plate (11); the C-shaped planetary gear frame is formed by connecting two first planetary gear frames (12) and second planetary gear frames (13) of identical structure; the upper ends of the first planetary gear frames (12) and the second planetary gear frames (13) are arc-shaped frames of one-third of a circle; a plurality of first gear shafts (121) are provided on the vertical surface of the first planetary gear frame (12); each first gear shaft (121) is axially connected to a first planetary gear (122); a plurality of second gear shafts (131) are provided on the vertical surface of the second planetary gear frame (13); each second gear shaft (131) is axially connected to a second planetary gear (132).

3. The anti-deformation fixture for welding automobile parts according to claim 2, characterized in that: An outer polygonal flange (23) is provided in the middle of the rotary frame (2); the outer polygonal flange (23) is sleeved between two groups of C-shaped planetary gear frames.

4. The anti-deformation fixture for welding automobile parts according to claim 3, characterized in that: The slewing frame (2) is also provided with a plurality of clamping rod bolt holes (24); the axis lines of the plurality of pairs of clamping rod bolt holes (24) intersect on the normal line of the central axis of the slewing frame (2); and a clamping mandrel (3) is provided in each clamping rod bolt hole.

5. The anti-deformation fixture for welding automobile parts according to claim 4, characterized in that: The clamping push rod (3) comprises a push rod head (31), a push rod body (32), and a push rod spring (33); the push rod head (31) is fixed to the front end of the push rod body (32); the push rod body (32) is screwed into the clamping rod bolt hole (24); a screwing portion (321) is provided at the rear end of the push rod body (32); and the push rod spring (33) is sleeved between the push rod head (31) and the inner side of the clamping rod bolt hole (24).

6. The anti-deformation fixture for welding automobile parts according to claim 5, characterized in that: The fixture table (4) is provided with an upper table (41), a lower table (42), and a supporting column (43); the upper table (41) and the lower table (42) are stacked and fixed on the supporting column (43); one side of the upper table (41) is provided with a fixed locking screw hole (412); the other side of the upper table (41) is provided with a plurality of parallel locking slide grooves (413); the two groups of workpiece fixture frames (1) are divided into: a left workpiece fixture frame (1L) and a right workpiece fixture frame (1R); the left workpiece fixture frame (1L) is locked at the fixed locking screw hole (412); and the right workpiece fixture frame (1R) is locked on the locking slide groove (413).

7. The anti-deformation fixture for welding automobile parts according to claim 6, characterized in that: An operation area recess (411) is provided on one side of the upper table surface (41).

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