Automobile rear apron connecting plate aluminum workpiece position degree and contour degree special detection tooling

Abstract

This invention relates to a specialized fixture for inspecting the position and contour of aluminum workpieces used in automotive rear skirt panel connecting plates. The base's contour shape matches the workpiece's shape. A square hole matching the workpiece's central square hole is located in the center of the base. A groove matching the threaded sleeve on the workpiece is also located in the center of the base. Blind holes matching the machined holes on the workpiece are also present on the base. Support blocks and support rings are located at the four corners of the base's upper surface, and quick-clamps are located at the four corners of the base. The pressure heads of the quick-clamps contact and press against the upper surface of the workpiece. This invention is specifically designed for inspecting the outer contour and machined hole positions of rear skirt panel connecting plates, offering advantages such as rapid and accurate inspection and convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing and inspection technology, specifically a special testing fixture for the position and contour of aluminum workpieces in automotive rear skirt panel connecting plates. Background Technology

[0002] The aluminum component for the rear apron connecting plate is installed at the rear end of the rear floor side beam of a car to fix and connect the rear apron. The aluminum component is milled from an aluminum sheet and has several square and round holes in the center, where several threaded sleeves are fixedly installed. It is subsequently assembled to other car components using bolts. Traditionally, rear apron connecting plates were made of steel, but with the development of lightweight vehicles, components are gradually being replaced by aluminum alloy materials. Aluminum components have better formability and corrosion resistance.

[0003] Inspecting the outer contour and machined holes of the rear skirt plate connecting plate is typically cumbersome, requiring various inspection tools such as inspection platforms, feeler gauges, hole gauges, and contour gauges. The process is complex and consumes significant time and effort from quality control personnel, especially at high inspection frequencies where efficiency is extremely low. Furthermore, the threaded sleeves installed on the aluminum workpiece of the rear skirt plate connecting plate hinder the placement and fixation of the workpiece. Therefore, improving the inspection efficiency and reducing the inspection difficulty of the rear skirt plate connecting plate is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this utility model is to provide a special inspection fixture for the position and contour of aluminum workpieces in automotive rear skirt panel connecting plates. It is specifically used for the inspection of the outer contour and machined hole positions of the rear skirt panel connecting plates, and has the advantages of fast and accurate inspection and convenient operation.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] This is a special inspection fixture for the position and contour of aluminum workpieces used in automotive rear skirt panel connecting plates. The base contour shape matches the workpiece shape. A square hole matching the central square hole of the workpiece is set in the center of the base. A groove matching the threaded sleeve on the workpiece is set in the center of the base. Blind holes matching the machined holes on the workpiece are set on the base. Support blocks and support rings are respectively set at the four corners of the upper end face of the base. Quick clamps are set at the four corners of the base. The pressure head of the quick clamp contacts and presses the upper end face of the workpiece downward.

[0007] Support blocks are used in areas without blind hole interference, while support rings are used in areas with blind hole interference. The support blocks and support rings support the workpiece, creating a gap between the lower surface of the workpiece and the upper surface of the base. Quick clamps are also located at the four corners. When there is no gauge interference, a single-point clamping head is used; when there is gauge interference, a fork-shaped double-point clamping head is used to press the workpiece firmly against the support blocks and support rings.

[0008] The base is provided with a top plane beam, the lower end face of the top plane beam forms a gap with the upper end face of the workpiece, and the two ends of the top plane beam are movably set on the top of the column by handwheel bolts.

[0009] After passing the threaded part of the handwheel through the through hole at the end of the top flat beam, screw it into the threaded hole on the column for manual installation and fixation.

[0010] The base is provided with a side plane beam, and the side of the side plane beam forms a gap with the side edge of the workpiece. The two ends of the side plane beam are movably set on the side of the column by handwheel bolts.

[0011] After passing the threaded part of the handwheel through the through hole at the end of the side beam, screw it into the threaded hole on the side of the column for manual installation and fixation.

[0012] The usage method is as follows:

[0013] (1) Place the workpiece on the base and align the threaded sleeve with the groove on the base for reference positioning;

[0014] (2) When the base is clamped down quickly, a gap is formed between the upper surface of the base and the lower surface of the workpiece;

[0015] (3) Install the top plane beam to form a gap with the upper surface of the workpiece;

[0016] (4) Install the side plane beam to form a gap with the edge of the workpiece;

[0017] (5) Insert the upper surface hole gauge to check the hole position and diameter;

[0018] (6) The quality inspector uses both ends of the standard gauge to scan the gap between the workpiece and the base (including the edge and the edge of the middle square hole), the gap between the workpiece and the top plane beam, and the gap between the workpiece and the side plane beam. If the large end of the standard gauge cannot be inserted into the gap, but the small end of the standard gauge can be inserted into the gap, it proves that the surface contour shape and position (torsion, curvature) of the workpiece meets the processing requirements; otherwise, it proves that the surface contour shape and position of the workpiece is unqualified.

[0019] Advantages of this utility model:

[0020] (1) This utility model is specifically used for the inspection of aluminum workpieces of automotive rear skirt connecting plates. It can simultaneously inspect the outer contour and machining hole positions of the workpiece, and in particular, it can also perform local inspection of the shape and position of the side edge of the workpiece, resulting in high inspection efficiency.

[0021] (2) The present invention has a compact structure, the components do not interfere with each other, occupy a small area, are easy to operate and maintain.

[0022] (3) The structure and principle of this utility model can be further expanded to adapt to the detection of other workpieces. Attached Figure Description

[0023] Figure 1 This is an elevation view of the present invention; (including the workpiece).

[0024] Figure 2 This is another elevation view of the structure of this utility model; (including the workpiece)

[0025] Figure 3 This is an elevation view of the present invention (excluding the workpiece).

[0026] Figure 4 This is another elevation view of the structure of this utility model; (excluding the workpiece).

[0027] Figure 5 This is a structural elevation view of the workpiece;

[0028] The components in the diagram are named as follows: 1-Base; 11-Support block; 12-Support ring; 2-End lower pressure arm; 21-Top plane beam; 22-Side plane beam; 3-Quick clamp; 4-Hole gauge. Detailed Implementation

[0029] Example 1

[0030] A special inspection fixture for the position and contour of aluminum workpieces in automotive rear skirt panel connecting plates. The contour shape of the base 1 matches the shape of the workpiece. A square hole matching the square hole in the middle of the workpiece is provided in the middle of the base 1. A groove matching the threaded sleeve on the workpiece is provided in the middle of the base 1. A blind hole matching the machined hole on the workpiece is provided on the base 1. Support blocks 11 and support rings 12 are respectively provided at the four corners of the upper end face of the base 1. Quick clamps 3 are respectively provided at the four corners of the base 1. The pressure head of the quick clamp 3 contacts and presses the upper end face of the workpiece downward.

[0031] The base 1 is provided with a top plane beam 21. The lower end face of the top plane beam 21 forms a gap with the upper end face of the workpiece. The two ends of the top plane beam 21 are movably set on the top of the column by handwheel bolts.

[0032] The base 1 is provided with a side plane beam 22. The side of the side plane beam 22 forms a gap with the side edge of the workpiece. The two ends of the side plane beam 22 are movably set on the side of the column by handwheel bolts.

Claims

1. A special detection tool for automobile rear apron connecting plate aluminum workpiece position and profile, characterized in that: The base (1) has a contour shape that matches the workpiece shape. The base (1) has a square hole in the middle that matches the square hole in the middle of the workpiece. The base (1) has a groove in the middle that matches the threaded sleeve on the workpiece. The base (1) has a blind hole that matches the machined hole on the workpiece. The base (1) has a support block (11) and a support ring (12) at the four corners of the upper end face of the base (1). The base (1) has a quick clamp (3) at the four corners of the four sides. The pressure head of the quick clamp (3) contacts and presses the upper end face of the workpiece downward. ​ 2. The special inspection fixture for the positional accuracy and contour accuracy of the aluminum workpiece of the automotive rear skirt connecting plate according to claim 1, characterized in that: The base (1) is provided with a top plane beam (21), the lower end face of the top plane beam (21) forms a gap with the upper end face of the workpiece, and the two ends of the top plane beam (21) are movably set on the top of the column by handwheel bolts.

3. The automobile rear apron connecting plate aluminum workpiece position and profile special detection tooling of claim 1, characterized in that: The base (1) is provided with a side plane beam (22), and the side of the side plane beam (22) forms a gap with the side edge of the workpiece. The two ends of the side plane beam (22) are movably set on the side of the column by handwheel bolts.

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