A high-precision positioning nut welding clamp

Abstract

The utility model relates to the technical field of automobile chassis suspension structure welding, specifically is a kind of high-precision positioning nut welding fixture of suspension, including cylinder overturning mechanism, still including the compression assembly of the baffle cooperation of cylinder overturning mechanism, the positioning assembly being set on cylinder overturning mechanism, the suspension assembly being cooperated with workpiece, adopt high-precision machining positioning pin positioning end face and nut end face adhesion positioning once, make nut suspension clearance above the " rough " sheet metal surface of lower machining precision, and nut positioning precision is not influenced by sheet metal surface, to realize nut high-precision positioning, ensure that nut end face and axis are better consistency after welding.

Description

Technical Field

[0001] This utility model relates to the field of welding technology for automotive chassis suspension structural components, specifically a suspended high-precision positioning nut welding fixture. Background Technology

[0002] In automotive chassis suspension systems, bolts and nuts are widely used for fastening connections between components. For example, the subframe, control arms, steering gear, and stabilizer bars are all assembled and secured as a single unit using bolts and nuts. Suspension components are mostly thick sheet metal, and the overall assembly structure bears significant loads from vehicle loads and impacts from complex road conditions. To ensure that the connections between chassis components maintain a certain level of overall rigidity and reliability, currently, high-strength nuts used on chassis components are mostly welded to stamped sheet metal using arc welding.

[0003] According to relevant usage requirements and testing standards, chassis arc-welded nuts need to have a certain peeling torque and assembly function. Existing technologies have some drawbacks. When the nut mounting surface is pressed tightly against the sheet metal surface, the nut's central axis D fluctuates significantly after positioning, making it difficult to control the extension tolerance of the nut axis D. This results in subsequent bolts being unable to be installed or poor assembly posture consistency, affecting subsequent assembly and even the vehicle's handling. To address this, current technologies mainly improve the contour accuracy of the sheet metal surface that mates with the nut to control the fluctuation of the nut's axis D after welding within the predetermined assembly extension tolerance range. However, this method requires controlling the surface contour tolerance of the welded sheet metal at a high precision, increasing stamping processes, raising process costs, and also resulting in poor stability. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model proposes a suspended high-precision positioning nut welding fixture.

[0005] A suspended high-precision positioning nut welding fixture includes a cylinder flipping mechanism, a clamping component that cooperates with the baffle of the cylinder flipping mechanism, a positioning component disposed on the cylinder flipping mechanism, and a suspension component that cooperates with the workpiece.

[0006] The clamping assembly includes a clamping mechanism connected to a cylinder flipping mechanism, a support column one, a support column two, a support column three that cooperate with the clamping mechanism, and a nut clamping clamp that is integrated with the clamping mechanism.

[0007] The clamping mechanism is a clamping block connected to the cylinder tilting mechanism. The clamping block cooperates with support column one, support column two, and support column three to achieve clamping.

[0008] The positioning components include positioning pin one and positioning pin two, which cooperate with support column one, support column two, and support column three.

[0009] The suspension assembly includes an integral positioning pin that passes through the workpiece and the nut, and a positioning pin cylinder connected to the integral positioning pin.

[0010] There is a suspension gap between the nut and the workpiece.

[0011] The working end face of the nut is perpendicular to the axis.

[0012] The beneficial effects of this utility model are: by using a one-time high-precision machined positioning pin, the positioning end face is fitted and positioned to fit the nut end face, so that the nut is suspended above the "rough" sheet metal surface with low machining precision. The positioning accuracy of the nut is not affected by the sheet metal surface, thereby achieving high-precision positioning of the nut and ensuring good consistency between the nut end face and the axis after welding. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a partial three-dimensional structural diagram of the present invention. Figure 1 ;

[0016] Figure 3 This is a partial three-dimensional structural diagram of the present invention. Figure 2 ;

[0017] Figure 4 This is a schematic diagram of the suspension component structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the axial structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the suspension gap structure of this utility model.

[0020] Reference numerals in the attached diagram: 1. Cylinder tilting mechanism; 2. Positioning pin cylinder; a. Support clamping one; b. Support clamping two; c. Support clamping three; d. Positioning pin one; e. Positioning pin two; f. Nut clamping clamp; g. Integrated positioning pin; h. Positioning pin positioning end face; k. Clamping mechanism; A. Workpiece; B. Nut; C. Suspension gap; D. Axis. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the utility model will be further described below.

[0022] like Figures 1 to 6As shown, a suspended high-precision positioning nut welding fixture includes a cylinder flipping mechanism 1, a clamping component that cooperates with the baffle of the cylinder flipping mechanism 1, a positioning component that is set on the cylinder flipping mechanism 1, and a suspension component that cooperates with the workpiece.

[0023] The clamping assembly includes a clamping mechanism k connected to the cylinder flipping mechanism 1, a support column a, a support column b, a support column c that cooperate with the clamping mechanism k, and a nut clamping clamp f that is integrated with the clamping mechanism k.

[0024] The clamping mechanism k is a clamping block connected to the cylinder flipping mechanism 1. The clamping block cooperates with support column a, support column b, and support column c to achieve clamping.

[0025] like Figure 2 and Figure 3 As shown, the positioning component of this utility model includes positioning pins 1d and 2e that cooperate with support column 1a, support column 2b, and support column 3c. According to the positioning reference of the workpiece drawing, the workpiece A is placed on support column 1a, support column 2b, and support column 3c, which serve as the reference surface. Positioning pins 1d and 2e are used for hole positioning. The clamping mechanism k fixes the workpiece A on the tooling. Then, the integrated positioning pin g passes through the workpiece A and the nut B. The nut clamping clamp f clamps the nut B and presses it tightly against the positioning end face h of the positioning pin. The nut B is welded to the workpiece A, thus completing the positioning and clamping of the workpiece A, the positioning and clamping of the nut B, and the welding of the nut B to the workpiece A.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, the suspension assembly includes an integral positioning pin g that passes through workpiece A and nut B, and a positioning pin cylinder 2 connected to the integral positioning pin g. The integral positioning pin g lifts the nut BA so that it does not contact workpiece A, thus achieving welding in a suspended state.

[0027] like Figure 4 and Figure 6 As shown, specifically, there is a floating gap C between the nut B and the workpiece A. The reference gap of the floating gap C is 0.2-0.5mm. A one-time high-precision machining positioning pin is used to position the positioning end face h to fit the end face of the nut B, so that the floating gap C of the nut B is above the "rough" sheet metal surface with low machining accuracy. The positioning accuracy of the nut B is not affected by the sheet metal surface, thereby achieving high-precision positioning of the nut B and ensuring good consistency between the end face of the nut B and the axis D after welding.

[0028] like Figure 4 and Figure 5As shown, the working end face of the nut B in this utility model is perpendicular to the axis D. Since the sheet metal surface does not participate in the welding positioning of the nut B, the surface profile tolerance of the sheet metal part can be appropriately released, the stamping process can be simplified, and a high-precision positioning pin is used to position the end face h instead of the sheet metal surface with large surface profile fluctuations to support and position the nut B, thereby saving process costs and improving the stability of welding quality.

[0029] Specifically, the axis D of this utility model is a simulated bolt axis assembled on the nut B, and the bolt passes through the mounting hole on the opposite side to meet the usage requirements.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A suspended high-precision positioning nut welding fixture, comprising a cylinder flipping mechanism (1), characterized in that: It also includes a clamping assembly that cooperates with the baffle of the cylinder tilting mechanism (1), a positioning assembly set on the cylinder tilting mechanism (1), and a suspension assembly that cooperates with the workpiece; The clamping assembly includes a clamping mechanism (k) connected to the cylinder flipping mechanism (1), a support column one (a), a support column two (b), a support column three (c) that cooperate with the clamping mechanism (k), and a nut clamping clamp (f) that is integrated with the clamping mechanism (k).

2. The suspended high-precision positioning nut welding fixture according to claim 1, characterized in that: The clamping mechanism (k) is a clamping block connected to the cylinder flipping mechanism (1). The clamping block cooperates with support column one (a), support column two (b), and support column three (c) to achieve clamping.

3. The suspended high-precision positioning nut welding fixture according to claim 2, characterized in that: The positioning components include positioning pin 1 (d) and positioning pin 2 (e) that cooperate with support column 1 (a), support column 2 (b), and support column 3 (c).

4. The suspended high-precision positioning nut welding fixture according to claim 1, characterized in that: The suspension assembly includes an integral positioning pin (g) that passes through the workpiece (A) and the nut (B), and a positioning pin cylinder (2) connected to the integral positioning pin (g).

5. A suspended high-precision positioning nut welding fixture according to claim 4, characterized in that: The nut (B) and the workpiece (A) have a suspension gap (C).

6. A suspended high-precision positioning nut welding fixture according to claim 1, characterized in that: The working end face of the nut (B) is perpendicular to the axis (D).

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