Car underframe welding and positioning tool

Abstract

The vehicle underframe welding and positioning tool comprises a base, centering assemblies are symmetrically arranged on the left side of the upper surface of the base front and back, and height fixing assemblies are symmetrically arranged on the right side of the upper surface front and back; the centering assembly comprises a supporting plate and a centering base, a centering rotating shaft is rotationally installed on the centering base, the outer end of the centering rotating shaft is connected with a handle, the inner end of the centering rotating shaft is provided with a centering disc, three centering protrusions are evenly distributed on the circumference of the centering disc, the centering disc is provided with a centering ring disc on the periphery of the three centering protrusions, and an elastic check ring for a shaft is arranged between the centering rotating shaft and the centering disc. The height fixing assembly comprises a fixing seat and a supporting seat, an inserting column is arranged on the positioning seat and sleeved with a supporting cylinder, a cover plate is arranged above the supporting cylinder, a connecting plate is arranged on the side wall of the supporting cylinder, a height fixing cylinder is arranged at the other end of the connecting plate and located above the supporting seat, supporting rings are arranged at the upper end and the lower end of the height fixing cylinder, and a step positioning shaft is arranged above the height fixing cylinder. According to the utility model, the good welding precision of products is ensured, and the quality of the products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of welding positioning tool, especially to a car underframe welding positioning tool. BACKGROUND

[0002] When the car underframe product is in the welding operation, the traditional method is to rely on manual welding, this operation mode, on the one hand, the efficiency is lower, on the other hand, the precision is lower, cannot accurately position the axis of the hole, the distance between the two ear plates is also not good to determine, more rely on the operation of the worker, lead to the final product difference is bigger. UTILITY MODEL CONTENTS

[0003] The utility model aims at solving the prior art's insufficient, and provides a car underframe welding positioning tool.

[0004] The utility model discloses a car underframe welding positioning tool, including the base, the left side of the base upper surface is equipped with the centring subassembly and is equipped with the high fixed subassembly of right side symmetry on the upper surface.

[0005] A car underframe welding positioning tool, including base, the left side of the base upper surface is equipped with the centring subassembly and is equipped with the high fixed subassembly of right side symmetry on the upper surface.

[0006] The centring subassembly includes the support plate fixed on the base, the support plate is fixed with the centring seat, the centring seat is rotationally installed with the centring rotating shaft, the centring rotating shaft is connected with the hand lever outside end and is equipped with the centring disc inside end, the centring disc is equipped with the centring ring disc on the periphery of three centring protrusions, and the elastic baffle ring for shaft is arranged between the centring rotating shaft and the centring disc.

[0007] The high fixed subassembly includes the fixed seat and the support seat fixed on the base, the fixed seat is equipped with the plug post, and the support cylinder is sleeved on the plug post, the support cylinder is equipped with the cover plate on the upper side, the cover plate is fixed on the plug post through screw, the support cylinder side wall is equipped with the connecting plate, the connecting plate is equipped with the high fixed cylinder on the other end, the high fixed cylinder is located above the support seat, the high fixed cylinder is equipped with the support ring on the upper and lower ends, and the high fixed cylinder is equipped with the stepped positioning shaft.

[0008] The base is the frame structure that four I-shaped main beams are composed, and three reinforcing beams are arranged between the front and rear I-shaped main beams.

[0009] The first L-shaped support block is symmetrically arranged on the left reinforcing beam, and the stopper is arranged on the right side of the upper surface of the first L-shaped support block.

[0010] The second L-shaped support block is symmetrically arranged on the middle reinforcing beam.

[0011] The third L-shaped support block is symmetrically arranged on the right reinforcing beam.

[0012] The fourth L-shaped supporting block, the fifth L-shaped supporting block and the sixth L-shaped supporting block are symmetrically arranged on the two I-shaped main beams near the centering assembly.

[0013] The centering disc, the centering protrusion and the centering ring disc of the centering assembly are used for positioning the hole axis of the product, and the height fixing assembly is used for positioning the distance between the two ear plates of the product, so that the welding precision of the product is ensured, and the quality of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a schematic view when the utility model is used;

[0016] Figure 3 It is a schematic view of a welding car underframe product;

[0017] In the drawing: 1-base; 2-centering assembly; 3-height fixing assembly; 4-first L-shaped supporting block; 5-stop block; 6-second L-shaped supporting block; 7-third L-shaped supporting block; 8-support square steel pipe; 9-fourth L-shaped supporting block; 10-fifth L-shaped supporting block; 11-sixth L-shaped supporting block; 12-flat plate supporting block;

[0018] 101-I-shaped main beam; 102-reinforcing beam;

[0019] 201-supporting plate; 202-centering seat; 203-centering rotating shaft; 204-hand crank; 205-centering disc; 206-centering protrusion; 207-centering ring disc; 208-elastic stop ring for shaft;

[0020] 301-fixing seat; 302-supporting seat; 303-supporting cylinder; 304-cover plate; 305-connecting plate; 306-height fixing cylinder; 307-supporting ring; 308-step positioning shaft;

[0021] The utility model will be described in detail below by combining the embodiments thereof with the drawings. DETAILED DESCRIPTION

[0022] The principles and features of the utility model will be described below by combining the drawings, and the embodiments are only used for explaining the utility model and are not used for limiting the scope of the utility model. In the following paragraphs, the utility model is described in more specific ways by referring to the drawings. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the drawings are very simplified and use non-precise proportions, and are only used for the purpose of conveniently and clearly assisting the description of the embodiments of the utility model.

[0023] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0026] like Figures 1 to 2 As shown, a chassis welding positioning fixture includes a base 1, a centering component 2, a height fixing component 3, a first L-shaped support block 4, a stop block 5, a second L-shaped support block 6, a third L-shaped support block 7, a supporting square steel pipe 8, a fourth L-shaped support block 9, a fifth L-shaped support block 10, a sixth L-shaped support block 11, and a flat plate support block 12.

[0027] The base 1 provides support for the entire tooling. The base 1 is a frame structure composed of four I-beam main beams 101, and three reinforcing beams 102 are provided between the front and rear I-beam main beams 101.

[0028] The upper surface of the base 1 has a centering component 2 symmetrically arranged on the left side and a height fixing component 3 symmetrically arranged on the right side.

[0029] The centering assembly 2 includes a support plate 201 fixed on the base 1, a centering seat 202 fixed on the support plate 201, a centering rotating shaft 203 rotatably mounted on the centering seat 202, a crank handle 204 connected to the outer end of the centering rotating shaft 203 and a centering disk 205 provided at the inner end, three centering protrusions 206 evenly distributed around the circumference of the centering disk 205, a centering ring disk 207 provided around the three centering protrusions 206 on the centering disk 205, and an elastic retaining ring 208 for the shaft between the centering rotating shaft 203 and the centering disk 205.

[0030] The fixed seat 301 is provided with an insertion column, and the insertion column is sleeved with a supporting cylinder 303.

[0031] The first L-shaped support block 4 is provided on the left reinforcing beam 102.

[0032] The second L-shaped support block 6 is provided on the middle reinforcing beam 102.

[0033] The third L-shaped support block 7 is provided on the right reinforcing beam 102.

[0034] The two supporting square steel pipes 8 are arranged between the two reinforcing beams 102 on the right side.

[0035] The fourth L-shaped support block 9, the fifth L-shaped support block 10 and the sixth L-shaped support block 11 are symmetrically arranged on the two I-shaped main beams 101.

[0036] The two groups of flat support blocks 12 are symmetrically arranged on the I-shaped main beam 101 on the right side.

[0037] As shown in Figure 2 The first L-shaped support block 4, the stop block 5, the second L-shaped support block 6, the third L-shaped support block 7, the supporting square steel pipe 8, the fourth L-shaped support block 9, the fifth L-shaped support block 10, the sixth L-shaped support block 11 and the flat support block 12 are used for positioning and supporting each position of the product bottom to be welded, then the centering disc 205, the centering convex 206 and the centering ring disc 207 of the centering assembly 2 are used for positioning the hole axis of the product, and the height fixing cylinder 306 of the height fixing assembly 3 is used for positioning the distance between the two ear plates of the product, so that the welding precision of the product is ensured, the quality of the product is improved, and the product is as shown in Figure 3

[0038] The utility model has been described above in connection with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode, and various improvements adopting the method concept and technical scheme of the utility model or direct application in other occasions without improvement are all within the protection scope of the utility model.​

Claims

1. A chassis welding positioning fixture, characterized in that, The application relates to a centering and height-fixing device for a large-sized workpiece. The centering assembly (2) comprises a supporting plate (201) fixed on the base (1), a centering seat (202) fixed on the supporting plate (201), a centering rotating shaft (203) rotatably installed on the centering seat (202), a hand crank (204) connected to the outer end of the centering rotating shaft (203), a centering disc (205) arranged at the inner end of the centering rotating shaft (203), three centering protrusions (206) uniformly distributed on the circumference of the centering disc (205), a centering ring disc (207) arranged on the periphery of the three centering protrusions (206), and an elastic shaft baffle (208) arranged between the centering rotating shaft (203) and the centering disc (205). The height-fixing assembly (3) comprises a fixing seat (301) and a supporting seat (302) fixed on the base (1), a supporting cylinder (303) sleeved on a column arranged on the fixing seat (301), a cover plate (304) arranged above the supporting cylinder (303) and fixed on the column through screws, a connecting plate (305) arranged on the side wall of the supporting cylinder (303), a height-fixing cylinder (306) arranged at the other end of the connecting plate (305), the height-fixing cylinder (306) being arranged above the supporting seat (302), supporting rings (307) arranged at the upper and lower ends of the height-fixing cylinder (306), and a stepped positioning shaft (308) arranged above the height-fixing cylinder (306).

2. The undercarriage welding positioning fixture of claim 1, wherein, The base (1) is a frame structure composed of four I-shaped main beams (101), and three reinforcing beams (102) are arranged between the front and rear two I-shaped main beams (101).

3. The undercarriage welding fixture of claim 2, wherein, First L-shaped supporting blocks (4) are symmetrically arranged on the left reinforcing beam (102).

4. The undercarriage welding fixture of claim 3, wherein, Second L-shaped supporting blocks (6) are symmetrically arranged on the middle reinforcing beam (102).

5. The undercarriage welding fixture of claim 4, wherein, Third L-shaped supporting blocks (7) are symmetrically arranged on the right reinforcing beam (102).

6. The undercarriage welding fixture of claim 5, wherein, Two supporting square steel pipes (8) are arranged between the right two reinforcing beams (102).

7. The undercarriage welding fixture of claim 6, wherein, Fourth, fifth and sixth L-shaped supporting blocks (9, 10 and 11) are symmetrically arranged on the side of the front and rear two I-shaped main beams (101) close to the centering assembly (2).

8. The undercarriage welding fixture of claim 7, wherein, Two groups of flat plate supporting blocks (12) are symmetrically arranged on the right I-shaped main beam (101) between the two centering assemblies (2).

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