An automobile battery tray support aluminum workpiece spin riveting reverse deformation tooling

Abstract

A riveting anti-deformation fixture for aluminum workpieces in automotive battery tray brackets is disclosed. A fixed base is mounted on a worktable, and a vertical push rod is installed on the base. The upper end of the push rod has a groove that matches the lower end of a rivet. The push rod, rivet, and rivet head are vertically aligned. Rotary cylinders are respectively installed on the left and right sides of the rear side of the base. When the horizontal pressure head on the piston rod of the rotary cylinder is in the retracted state, it presses against both sides of the riveting hole of the bracket. This utility model is specifically used for riveting aluminum workpieces in automotive battery tray brackets. It utilizes anti-deformation control to eliminate the bending caused by riveting the bracket. The fixture has a simple and compact structure and is easy to use and maintain.

Description

Technical Field

[0001] This utility model relates to the field of riveting tooling technology, specifically a riveting anti-deformation tooling for aluminum workpieces of automotive battery tray brackets. Background Technology

[0002] Rotary riveting is a form of riveting where the rivet head rotates eccentrically, causing the rivet shank to rotate at a fixed angle around the circumference of the tubular rivet head. This continuous rolling of the rivet material deforms, forming a flange, and ultimately securing the rivet to the sheet metal. Its advantages include lower riveting force and better riveting quality.

[0003] In new energy vehicles, the power battery is mounted on a tray, which is connected to the side beams of the chassis by bolts. The power battery mounting bracket extends into the cavity of the side beam profile as a nut. The bracket is made of aluminum profile. Several through holes are punched on the bracket profile, and a rivet nut is inserted into each through hole. The edge of the nut is fixed to the edge of the through hole of the profile by riveting. The threaded hole of the rivet nut can be screwed into bolts or other fasteners for anchoring and fixing to other bracket members.

[0004] In actual production, when riveting wide and flat brackets, the brackets have low deformation resistance. As the tubular rivets are continuously riveted and pressed down, the flanged part exerts extrusion force on the brackets, causing plastic deformation and downward bending. This results in the brackets needing further shaping or bending after riveting, which leads to scrapping due to exceeding tolerances. This increases the workload and scrap rate. Summary of the Invention

[0005] The purpose of this utility model is to provide a riveting anti-deformation tooling for aluminum workpieces of automotive battery tray brackets, which is specially used for riveting operations of aluminum workpieces of automotive battery tray brackets. It utilizes anti-deformation control to eliminate the bending caused by riveting of the bracket. The tooling has a simple and compact structure and is easy to use and maintain.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A riveting and anti-deformation tooling for an aluminum workpiece of an automotive battery tray bracket includes a fixed base on a worktable, a vertical push rod on the base, and a groove at the upper end of the push rod that matches the lower end of the rivet. The positions of the push rod, rivet, and rivet head are vertically aligned. Rotary cylinders are respectively installed on the left and right sides of the rear side of the base. When the horizontal pressure head on the piston rod of the rotary cylinder is in the retracted state, it presses against both sides of the riveting hole on the bracket.

[0008] A flexible pad is provided on the lower pressing surface of the horizontal pressure head on the piston rod of the rotary cylinder. The flexible pad can prevent the cylinder pressure head from causing indentations on the bracket and can protect the surface of the bracket.

[0009] The base is fixed to the T-slot of the worktable by bolts. The T-slot facilitates quick installation of the base.

[0010] The steps for using this utility model are as follows:

[0011] (1) With the rotary cylinder not pressed down, align the through hole of the punched bracket with the push rod and place it on it;

[0012] (2) Then place the tubular rivet on the punch hole of the bracket, and embed the bottom of the rivet into the groove at the end of the top rod;

[0013] (3) Press down the rotary cylinder. The cylinder head presses down both ends of the bracket and produces a preset reverse deformation. The amount of reverse deformation is determined during the previous trial run and material testing.

[0014] (4) Rotate the riveting head and press down to rivet;

[0015] (5) The rotary cylinder rises to complete the riveting operation;

[0016] Advantages of this utility model:

[0017] (1) This utility model is specifically used for riveting operations of automotive battery tray brackets. It utilizes anti-deformation control to eliminate stress bending caused by riveting of aluminum brackets. After riveting, the bracket has high flatness and good straightness. It reduces the subsequent straightening work, reduces the amount of scrapped workpieces, improves production efficiency, and reduces costs.

[0018] (2) The tooling structure of this utility model is simple and compact, easy to use and maintain, and operators only need simple training to start working.

[0019] (3) The structure and principle of this utility model can be further expanded to adapt to the riveting of other aluminum workpieces. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the elevation structure of the tooling of this utility model;

[0021] Figure 2 This is a schematic diagram of the tooling of this utility model in its non-working state (excluding the workpiece).

[0022] Figure 3 This is a front view schematic diagram of the tooling of this utility model in its working state; (including the workpiece and rivet nut).

[0023] Figure 4 This is a structural diagram of the aluminum workpiece for this bracket (including rivet nuts).

[0024] The components in the diagram are named as follows: 1-Workbench; 2-Base; 21-Top rod; 3-Rotary cylinder; 31-Flexible pad; 4-Rivet head; 5-Thin aluminum plate; 6-Rivet. Detailed Implementation

[0025] Example 1

[0026] A riveting and anti-deformation tooling for an aluminum workpiece of an automotive battery tray bracket includes a base 2 fixed on a worktable 1, a vertical push rod 21 on the base 2, and a groove at the upper end of the push rod 21 that matches the lower end of the rivet 6. The positions of the push rod 21, the rivet 6, and the riveting head 4 are vertically aligned. Rotary cylinders 3 are respectively arranged on the left and right sides of the rear side of the base 2. When the horizontal pressure head on the piston rod of the rotary cylinder 3 is in the retracted state, it presses the two sides of the thin aluminum plate 5.

[0027] A flexible pad 31 is provided on the lower pressing surface of the horizontal pressure head on the piston rod of the rotary cylinder 3.

[0028] The base 2 is fixed to the T-slot of the workbench 1 by bolts.

Claims

1. A riveting and anti-deformation tooling for aluminum workpieces of automotive battery tray brackets, characterized in that: A base (2) is fixed on the workbench (1). A vertical top rod (21) is set on the base (2). The upper end of the top rod (21) has a groove that matches the lower end of the rivet (6). The positions of the top rod (21), the rivet (6) and the riveting head (4) are vertically aligned. Rotary cylinders (3) are set on the left and right sides of the rear side of the base (2). When the horizontal pressure head on the piston rod of the rotary cylinder (3) is in the contracted state, it presses the two sides of the thin aluminum plate (5).

2. The aluminum workpiece swaging reverse deformation tooling for an automotive battery tray support according to claim 1, wherein: A flexible pad (31) is provided on the lower pressing surface of the horizontal pressure head on the piston rod of the rotary cylinder (3).

3. The aluminum workpiece swaging reverse deformation tooling for an automotive battery tray support according to claim 1, wherein: The base (2) is fixed to the T-slot of the workbench (1) by bolts.

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