CN201993081U - Automobile sheet metal part surface difference testing fixture - Google Patents

Abstract

The utility model discloses an automobile sheet metal part surface difference testing fixture which includes a testing support. The testing support includes a reference portion and an installation portion. The reference portion and the installation portion are L-shaped. The installation portion is provided with a first through hole on the upper surface. The lower end face of the reference portion is perpendicular to the axial line of the first through hole. The testing fixture also includes a dial indicator. A testing rod of the dial indicator is penetratingly arranged in the first through hole. A testing end of the testing rod extends out the lower end face of the reference portion. The utility model not only can measure the surface difference of a sheet metal part precisely, but also can improve the detecting efficiency of the operation personnel, thus being convenient and practical.

Description

Automotive sheet metal surface difference inspection tool

technical field

The utility model relates to the field of automobile sheet metal, in particular to a checking tool for detecting surface differences of automobile sheet metal parts.

Background technique

After the sheet metal parts of the car are produced, they should be tested for surface difference with the reference plane. The quality of the mold can be evaluated through the inspection. If the surface difference of the sheet metal parts is within a reasonable range, it means that the quality of the mold is passed. Otherwise It means that the mold is defective, and it needs to be adjusted or even re-opened. Usually in the actual inspection, the operator uses a steel ruler or a vernier caliper to measure the surface difference, but due to the limited accuracy of the steel ruler measurement, the detection error is relatively large, and because the vernier caliper has a small detection reference surface, the detection error is also relatively large , so people have designed a variety of sheet metal surface difference detection tools, but the measurement accuracy and convenience of detection of such detection tools always fail to meet the actual requirements. The Chinese invention patent specification CN101738151A published on June 16, 2010 discloses a convenient steel plate measuring tool. The measuring tool makes a stepped notch on the main body, wherein the height of the step represents the thickness of the steel plate. The tool can adapt to the The factory detects the height difference of sheet metal parts, but the tool uses the reference height to measure it. Due to the wear and tear of the detection tool, the reference height will change, which will affect the detection results, reduce the detection accuracy, and operate When the personnel use the tool for surface difference detection, the convenience is insufficient and the work efficiency is reduced.

Contents of the invention

The utility model mainly solves the problem of low detection accuracy and detection efficiency of the sheet metal surface difference detection tool in the prior art, and provides a surface difference detection tool for automobile sheet metal parts, which can improve the sheet metal surface difference detection accuracy and efficiency.

In order to solve the above-mentioned technical problems, the utility model adopts such a surface difference inspection tool for automobile sheet metal parts, which includes a detection bracket, and the detection bracket includes a reference part and a mounting part, and the reference part and the mounting part are L-shaped. The upper surface of the installation part is provided with a first through hole, the lower end surface of the reference part is perpendicular to the axis of the first through hole, and the checker also includes a dial indicator, and the detection rod of the dial indicator passes through the axis of the first through hole. Located in the first through hole, the detection end of the detection rod protrudes from the lower end surface of the reference part. Before detecting sheet metal parts, unify the detection end of the detection rod and the lower end surface of the reference part on a reference plane, and then zero the dial indicator. Since the detection end of the detection rod protrudes from the lower end surface of the reference part, the positive or negative value can be read from the dial indicator when detecting the surface difference of the sheet metal part, that is, the surface of the surface sheet metal part is higher than the reference surface Or low, if the value is within the normal range, it means that the produced sheet metal parts are qualified, and the mold is also qualified, otherwise, it means that the mold is unqualified and needs to be corrected. The utility model not only can accurately measure the surface difference of the sheet metal parts, but also improves the detection efficiency of operators, and is convenient and practical.

As a preferred solution of the present utility model, a rectangular groove is provided in the center of the end face of the installation part, the groove passes through the upper and lower surfaces of the installation part and the first through hole, and a second through hole is provided on the side of the installation part. A through hole, the second through hole passes through the groove. The purpose of setting a rectangular groove on the end face of the installation part is to make the first through hole of the installation part flexible, which can facilitate the installation of the detection rod of the dial gauge, and the second through hole is provided to facilitate the installation of bolts for The detection rod of the dial indicator is fixed.

As a preferred solution of the present invention, the lower end surface of the reference part is conical, and the bottom surface of the conical shape is a plane. The reason why the lower end surface of the reference part is conical and the bottom surface of the cone is flat is that the flatness of the end surface of the reference part can be ensured, the measurement accuracy can be improved, and the error can be reduced.

As a preferred solution of the present utility model, the measuring range of the dial indicator is 0-12.7 mm, and the resolution is 0.01 mm.

As a preferred solution of the present invention, the plane height difference between the detection end of the detection rod and the lower end surface of the reference part is 5-7 mm.

The beneficial effect of the utility model is that the labor intensity of assembly personnel can be effectively reduced, and the assembly speed can be improved.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of detection bracket in the utility model;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is the right view of Fig. 3;

Fig. 5 is a sectional view along A-A in Fig. 2 .

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

As shown in Figures 1 to 5, a surface difference inspection tool for automobile sheet metal parts in this embodiment includes a detection bracket 1 and a dial indicator 2. The measuring range of the dial indicator 2 is 0~12.7mm, and the resolution is 0.01mm. The detection bracket 1 includes a reference part 11 and a mounting part 12. The reference part 11 and the mounting part 12 are perpendicular to each other and form an L shape. A first through hole 14 is provided on the upper surface of the mounting part 12, and a rectangular groove 15 is provided in the center of the end face of the mounting part 12. The groove 15 penetrates the upper and lower surfaces of the installation part 12 and the first through hole 14, and a second through hole 16 is provided on the side of the installation part 12, and the second through hole 16 passes through the groove. The lower end surface of the reference part 11 is conical, and the bottom surface of the taper is a plane, the lower end surface of the reference part 11 is perpendicular to the axis of the first through hole 14, and the detection rod 21 of the dial indicator 2 is passed through the In the first through hole 14 , the detection rod 21 is fixed on the detection bracket 1 with the bolt 13 , and the detection end of the detection rod 21 protrudes 6 mm from the lower end surface of the reference part 1 .

Before detecting sheet metal parts, unify the detection end of the detection rod and the lower end surface of the reference part on a reference plane, and then zero the dial indicator. Since the detection end of the detection rod protrudes from the lower end surface of the reference part, the positive or negative value can be read from the dial indicator when detecting the surface difference of the sheet metal part, that is, the surface of the surface sheet metal part is higher than the reference surface Or low, if the value is within the normal range, it means that the produced sheet metal parts are qualified, and the mold is also qualified, otherwise, it means that the mold is unqualified and needs to be corrected. The utility model not only can accurately measure the surface difference of the sheet metal parts, but also improves the detection efficiency of operators, and is convenient and practical.

Claims (9)

1. A surface difference inspection tool for automobile sheet metal parts, including a detection bracket (1), characterized in that the detection bracket (1) includes a reference part (11) and a mounting part (12), and the reference part (11 ) and the installation part (12) are L-shaped, and a first through hole (14) is provided on the upper surface of the installation part (12), and the lower end surface of the reference part (11) is in contact with the first through hole (14) The axis of the test tool is vertical, and the checker also includes a dial gauge (2), and the detection rod (21) of the dial gauge (2) is passed through the first through hole (14), and the detection rod The detection end of (21) protrudes from the lower end surface of the reference part (1). 2. The surface difference inspection tool for automobile sheet metal parts according to claim 1, characterized in that, a rectangular groove (15) is provided in the center of the end surface of the mounting part (12), and the groove (15) passes through the The upper and lower surfaces of the installation part (12) and the first through hole (14), a second through hole (16) is provided on the side of the installation part (12), and the second through hole (16) passes through the groove. 3. The surface difference inspection tool for automobile sheet metal parts according to claim 1 or 2, characterized in that, the lower end surface of the reference part (11) is conical, and the bottom surface of the conical shape is a plane. 4. The surface difference inspection tool for automobile sheet metal parts according to claim 1 or 2, characterized in that, the measuring range of the dial indicator (2) is 0-12.7mm, and the resolution is 0.01mm. 5 . The surface difference inspection tool for automobile sheet metal parts according to claim 3 , characterized in that, the measuring range of the dial indicator ( 2 ) is 0-12.7 mm, and the resolution is 0.01 mm. 5 . 6. The surface difference inspection tool for automobile sheet metal parts according to claim 1 or 2, characterized in that the plane height between the detection end of the detection rod (21) and the lower end surface of the reference part (11) is The difference is 5~7mm. 7. The surface difference inspection tool for automobile sheet metal parts according to claim 3, characterized in that, the plane height difference between the detection end of the detection rod (21) and the lower end surface of the reference part (11) is 5~7mm. 8. The surface difference inspection tool for automobile sheet metal parts according to claim 4, characterized in that, the plane height difference between the detection end of the detection rod (21) and the lower end surface of the reference part (11) is 5~7mm. 9. The surface difference inspection tool for automobile sheet metal parts according to claim 5, characterized in that, the plane height difference between the detection end of the detection rod (21) and the lower end surface of the reference part (11) is 5~7mm.

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