Special detection tool for position tolerance and profile tolerance of aluminum workpiece of front cross beam of front cabin of automobile

Abstract

A special detection tool for the location degree and profile tolerance of a front cross beam aluminum workpiece of an automobile front cabin is characterized in that a bottom supporting seat and an end positioning seat are respectively fixed at two ends of the workpiece, a plurality of columns are arranged on one side of the workpiece, swing arms are hinged to the upper ends of the columns, a top detection plate is fixed at the front ends of the swing arms, and a gap A is formed between the top detection plate and the upper surface of the workpiece after the top detection plate swings downwards in place; the top detection plate is provided with a plurality of top spring hole gauges, and the positions of the top spring hole gauges are matched with the positions of workpiece top machining holes. A plurality of side spring hole gauges are arranged on the other side of the workpiece and matched with the positions of side machining holes of the workpiece. The device is specially used for detecting the outer contour and the processing hole position of the front cabin front cross beam, and has the advantages of rapid and accurate detection, convenient operation and the like.

Description

Technical Field

[0001] This utility model relates to the field of automotive component manufacturing and inspection technology, specifically a special testing fixture for the position and contour of aluminum workpieces in the front crossbeam of an automotive engine compartment. Background Technology

[0002] The front crossbeam of a car's engine compartment is attached to the front of the vehicle frame and is used to fix and support the front engine compartment. It is made of square tubular aluminum profile with several connecting holes machined into it. Traditionally, the front crossbeam was made of steel, but with the development of lightweight automobiles, aluminum alloy materials are gradually being used to replace it. Aluminum parts have better formability and corrosion resistance.

[0003] Inspecting the outer contour and machined holes of the front crossbeam in the forward engine compartment 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 when inspections are frequent, resulting in extremely low efficiency. Therefore, improving the inspection efficiency of the front crossbeam in the forward engine compartment 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 the front crossbeam of an automobile engine compartment. It is specifically used for the inspection of the outer contour and machined hole positions of the front crossbeam of the engine compartment, 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] A special inspection fixture for the position and contour of an aluminum workpiece in the front crossbeam of an automobile engine compartment is provided. A bottom support and an end positioning seat are fixed at both ends of the workpiece, respectively. Several columns are set on one side of the workpiece, and a swing arm is hinged to the upper end of the column. A top inspection plate is fixed at the front end of the swing arm. After the top inspection plate swings down to its position, it forms a gap A with the upper surface of the workpiece. Several top spring gauges are set on the top inspection plate, and the position of the top spring gauges matches the position of the top machined hole of the workpiece. Several side spring gauges are set on the other side of the workpiece, and the position of the side spring gauges matches the position of the side machined hole of the workpiece.

[0007] Several columns are provided on one side of the workpiece, quick clamps are installed on the top of the columns, pressure heads are installed at the ends of the quick clamp swing arms, and through holes are provided at the matching positions of the top detection plate.

[0008] The bottom support is provided with several support protrusions, so that a gap B is formed between the bottom support and the lower surface of the workpiece.

[0009] The usage method is as follows:

[0010] (1) Place the workpiece on the bottom support base, with the two ends of the workpiece corresponding to the end positioning base. There are blind holes on the end positioning base, corresponding to the machining holes at the ends of the workpiece. Insert the hole gauge into the machining hole and blind hole of the workpiece to check the machining accuracy of the machining hole on the one hand, and use the hole gauge to position and fix the workpiece on the other hand.

[0011] (2) Lower the swing arm so that the top detection plate forms a gap A with the upper surface of the workpiece;

[0012] (3) The chuck of the quick clamp passes through the through hole of the top detection plate and presses the workpiece downward, so that a gap B is formed between the bottom surface of the workpiece and the upper end surface of the base.

[0013] (4) Press the spring hole gauge and the side spring hole gauge on the top detection plate in sequence to check the hole position;

[0014] (5) The quality inspector uses both ends of the go and no-go gauge to sweep through gap A and gap B respectively. If the large end of the go and no-go gauge cannot be inserted into the gap, but the small end of the go and no-go 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.

[0015] Advantages of utility models

[0016] (1) This utility model is specifically used for the detection of the outer contour and machining hole positions of the aluminum workpiece of the front crossbeam of the front engine compartment. It can simultaneously detect the outer contour and machining hole positions of the workpiece at one time, with high detection efficiency.

[0017] (2) This utility model has a compact structure, occupies a small area, is easy to operate and maintain.

[0018] (3) The structure and principle of this utility model can be further expanded to adapt to the detection of other workpieces. Attached Figure Description

[0019] Figure 1 This is an elevation view of the present invention (excluding the workpiece).

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point I;

[0021] Figure 3 This is another elevation view of the structure of this utility model; (excluding the workpiece).

[0022] Figure 4 This is an elevation view of the present invention; (including the workpiece).

[0023] Figure 5 This is a structural elevation view of the workpiece;

[0024] The components in the diagram are named as follows: 11-bottom support; 12-support protrusion; 2-end positioning seat; 31-swing arm; 32-top detection plate; 33-top spring hole gauge; 4-through hole gauge; 5-quick clamp; 6-workpiece; 7-side spring hole gauge. Detailed Implementation

[0025] Example 1

[0026] A special inspection fixture for the position and contour of an aluminum workpiece in the front crossbeam of an automobile engine compartment. A bottom support seat 11 and an end positioning seat 2 are fixed at both ends of the workpiece 6. Several columns are set on one side of the workpiece 6, and a swing arm 31 is hinged to the upper end of the column. A top inspection plate 32 is fixed to the front end of the swing arm 31. After the top inspection plate 32 swings down to its position, it forms a gap A with the upper surface of the workpiece 3. Several top spring hole gauges 33 are set on the top inspection plate 32, and the position of the top spring hole gauges 33 matches the position of the top machining hole of the workpiece 6. Several side spring hole gauges 7 are set on the other side of the workpiece 6, and the position of the side spring hole gauges 7 matches the position of the side machining hole of the workpiece 6.

[0027] Several columns are provided on one side of the workpiece 6, quick clamps 5 are installed on the top of the columns, pressure heads are installed at the ends of the swing arms of the quick clamps 5, and through holes are provided at matching positions on the top detection plate 32.

[0028] The bottom support 11 is provided with a plurality of support protrusions 12, so that a gap B is formed between the bottom support 11 and the lower surface of the workpiece 3.

Claims

1. A special inspection fixture for the positional accuracy and contour accuracy of an aluminum workpiece in the front crossbeam of an automobile engine compartment, characterized in that: Workpiece (6) both ends are fixed bottom support seat (11) and end positioning seat (2) respectively, the side of workpiece (6) is provided with several stand columns, the upper end of stand column is hinged swing arm (31), the front end of swing arm (31) is fixed top detection plate (32), top detection plate (32) is swung to the position below and forms gap A with the upper surface of workpiece (6), top detection plate (32) is provided with several top spring hole gauge (33), the position of top spring hole gauge (33) is matched with the position of workpiece (6) top machining hole.

2. The position and profile gauge for the automobile front end cross beam aluminum workpiece according to claim 1, characterized in that: The side of the workpiece (6) is provided with several stand columns, the top of the stand column is installed with a quick clamp (5), the end of the quick clamp (5) is installed with a pressure head, and the top detection plate (32) is provided with a through hole matched with the position.

3. The position and profile gauge for the automobile front end cross beam aluminum workpiece according to claim 1, characterized in that: The bottom support seat (11) is provided with several support convex points (12), so that a gap B is formed between the bottom support seat (11) and the lower surface of the workpiece (6).

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