Wheel hole gap, face difference measuring device and measuring method

Abstract

The application discloses a kind of wheel hole gap, surface difference measuring device and measuring method, device structure novel and reasonable, it is convenient to assemble production, it is by setting right angle reference frame, and spirit level is installed on the horizontal reference frame of right angle reference frame, can be adjusted to parallel with horizontal plane using spirit level when carrying out wheel hole gap measurement, eliminates the measurement error caused by the error of measuring instrument angle, unifies the measurement standard of wheel hole gap.Simultaneously, when carrying out wheel hole surface difference measurement, can be arranged using the vertical reference frame in right angle reference frame and tire outer side face, with tire outer side face as measurement reference, eliminates the measurement error caused by the error of measuring instrument angle, unifies the measurement standard of surface difference.

Description

Technical Field

[0001] This invention belongs to the field of vehicle manufacturing technology, and relates to wheel bore clearance and surface difference measurement technology, and in particular to a wheel bore clearance and surface difference measurement device and measurement method. Background Technology

[0002] During vehicle use, tires move up and down and rotate, so a certain gap and surface difference should be maintained between the tires and the vehicle body. The gap and surface difference between the tires and the vehicle body have a certain impact on the overall aesthetics of the vehicle.

[0003] Currently, the industry lacks a unified measurement method and standardized measuring devices. Measurement errors often arise due to variations in the angle at which measuring instruments are placed, leading to a lack of standardized measurement standards for wheel bore clearance and surface difference. This increases the difficulty of measuring tire-to-vehicle clearance and surface difference. Therefore, it is necessary to propose a wheel bore clearance and surface difference measurement scheme that can unify measurement standards and reduce measurement errors. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for measuring wheel bore clearance and surface difference, in order to solve the problem that the industry currently lacks both a unified measurement method and a standard measurement device, which makes it impossible to unify the measurement standards for wheel bore clearance and surface difference.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a device for measuring wheel hole clearance and surface difference, comprising:

[0007] A right-angle reference frame, comprising a vertical reference frame and a horizontal reference frame arranged perpendicularly to the vertical reference frame, wherein the outer corner tip of the right-angle reference frame is the common measurement starting point of the vertical reference frame and the horizontal reference frame;

[0008] A clearance measuring block is slidably mounted on the vertical reference frame and can slide along the length of the vertical reference frame; a clearance measuring surface parallel to the horizontal reference frame is provided on the side of the clearance measuring block opposite to the measurement starting point, and the distance between the clearance measuring surface and the measurement starting point is used to characterize the clearance value between the tire and the vehicle body;

[0009] A surface difference measuring block is slidably mounted on the horizontal reference frame and can slide along the length of the horizontal reference frame; a surface difference measuring surface parallel to the vertical reference frame is provided on the side of the surface difference measuring block facing the measurement starting point, and the distance between the surface difference measuring surface and the measurement starting point is used to characterize the surface difference value of the tire relative to the vehicle body;

[0010] A level, which is mounted on the horizontal reference frame or the surface difference measuring block, is used to detect whether the horizontal reference frame is parallel to the horizontal plane.

[0011] Optionally, the level is mounted on the surface difference measuring block by means of snap-fit, screw-fit, adhesive, or welding.

[0012] Optionally, the level can be an electronic level, a magnetic level, a universal level, a ruler level, or a bubble level.

[0013] Optionally, the right-angle reference frame is a square, one side of the square is the vertical reference frame, and the outer edge of the vertical reference frame is provided with an outer vertical measurement scale, the other side of the square is the horizontal reference frame, and the outer edge of the horizontal reference frame is provided with an outer horizontal measurement scale, the zero mark of the outer horizontal measurement scale and the zero mark of the outer vertical measurement scale coincide at the outer corner tip of the square.

[0014] Optionally, the vertical reference frame is further provided with an inner vertical measurement scale on its inner edge, and the horizontal reference frame is further provided with an inner horizontal measurement scale on its inner edge, wherein the zero mark of the inner horizontal measurement scale and the zero mark of the inner vertical measurement scale coincide at the tip of the inner corner of the square.

[0015] Optionally, the length of the vertical reference frame is not less than the diameter of the tire.

[0016] Optionally, the length of the horizontal reference frame is less than the length of the vertical reference frame.

[0017] This invention also proposes a method for measuring wheel bore clearance, implemented using the aforementioned wheel bore clearance and surface difference measuring device, comprising:

[0018] Adjust the angle ruler so that the horizontal reference frame is located below the vertical reference frame, and the opening of the angle ruler faces the vehicle body;

[0019] Place the outer edge of the horizontal reference frame in the square against the top of the outer periphery of the tire, and adjust the horizontal reference frame to be parallel to the horizontal plane;

[0020] Move the angle ruler horizontally into the vehicle body until the inner edge of the vertical reference frame in the angle ruler abuts against the outer surface of the vehicle body;

[0021] Move the gap measuring block upwards until the gap measuring surface contacts the top contour of the wheel hole in the vehicle body;

[0022] The gap between the tire and the vehicle body is determined by reading the scale value corresponding to the vertical measurement scale on the outer side of the gap measuring surface.

[0023] This invention also proposes a method for measuring wheel hole surface difference, implemented using the aforementioned wheel hole clearance and surface difference measuring device, comprising:

[0024] Adjust the angle ruler so that the horizontal reference frame is above the vertical reference frame, and the opening of the angle ruler is away from the vehicle body;

[0025] Place the outer edge of the vertical reference frame in the square against the outer surface of the tire, and adjust the vertical reference frame to be perpendicular to the horizontal plane;

[0026] Move the angle ruler vertically upward until the outer edge of the horizontal reference frame in the angle ruler contacts the top contour of the wheel hole in the vehicle body;

[0027] Move the surface difference measuring block toward the vehicle body until the surface difference measuring surface contacts the outer side of the vehicle body;

[0028] The surface difference measurement surface is read from the corresponding scale value on the outer horizontal measurement scale, which is the surface difference between the tire and the vehicle body.

[0029] The present invention achieves the following technical effects compared to the prior art:

[0030] The wheel bore clearance and surface difference measuring device proposed in this invention has a novel and reasonable structure, and is easy to assemble and manufacture. By setting up a right-angle reference frame and installing a level on the horizontal reference frame of the right-angle reference frame, the horizontal reference frame can be adjusted to be parallel to the horizontal plane during wheel bore clearance measurement, eliminating measurement errors caused by the angle of the measuring instruments and standardizing the measurement standard for wheel bore clearance. Simultaneously, during wheel bore surface difference measurement, the vertical reference frame of the right-angle reference frame can be placed close to the outer surface of the tire, using the outer surface of the tire as the measurement reference, eliminating measurement errors caused by the angle of the measuring instruments and standardizing the measurement standard for surface difference.

[0031] The wheel hole clearance measurement method proposed in this invention is implemented using the aforementioned wheel hole clearance and surface difference measurement device. By setting the level, it can ensure that the horizontal reference frame is placed parallel to the horizontal plane, eliminating the measurement error caused by the angle error of the measuring tool placement, and unifying the measurement standard of wheel hole clearance.

[0032] The wheel hole surface difference measurement method proposed in this invention is implemented using the aforementioned wheel hole clearance and surface difference measurement device. It relies on the outer side of the tire as the measurement reference, eliminates the measurement error caused by the placement angle of the measuring instrument, and unifies the measurement standard of surface difference. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of the wheel hole clearance and surface difference measuring device disclosed in the embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram illustrating the principle of wheel hole clearance measurement as disclosed in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram illustrating the principle of wheel hole surface difference measurement as disclosed in an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram showing the usage state of the wheel hole clearance and surface difference measuring device when measuring wheel hole surface difference as disclosed in the embodiments of the present invention.

[0038] The attached figures are labeled as follows:

[0039] 100. Wheel hole clearance and surface difference measuring device; 200. Tires; 300. Body fenders, wheel arches, and side panels;

[0040] 1. Right-angle reference frame; 2. Vertical reference frame; 3. Horizontal reference frame; 4. Measurement starting point; 5. Gap measuring block; 5-1. Gap measuring surface; 6. Surface difference measuring block; 6-1. Surface difference measuring surface; 7. Level; 7-1. Level scale lines; 8. Outer vertical measurement scale; 9. Inner vertical measurement scale; 10. Outer horizontal measurement scale; 11. Inner horizontal measurement scale. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] One of the objectives of this invention is to provide a wheel bore clearance and surface difference measuring device to solve the problem that the industry currently lacks both a unified measurement method and a standard measuring device, which makes it impossible to unify the measurement standards for wheel bore clearance and surface difference.

[0043] Another object of the present invention is to provide a method for measuring wheel hole clearance using the above-mentioned wheel hole clearance and surface difference measuring device.

[0044] Another object of the present invention is to provide a method for measuring wheel hole surface difference using the above-mentioned wheel hole clearance and surface difference measuring device.

[0045] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Example 1

[0047] This embodiment provides a wheel hole clearance and surface difference measuring device 100, mainly including a right-angle reference frame 1, a clearance measuring block 5, a surface difference measuring block 6, and a level 7. The right-angle reference frame 1 includes a vertical reference frame 2 and a horizontal reference frame 3 arranged perpendicular to the vertical reference frame 2. The outer corner tip of the right-angle reference frame 1 is the common measurement starting point 4 of the vertical reference frame 2 and the horizontal reference frame 3. The clearance measuring block 5 is slidably mounted on the vertical reference frame 2 and can slide along the length direction of the vertical reference frame 2. A clearance measuring surface 5-1 parallel to the horizontal reference frame 3 is provided on the side of the clearance measuring block 5 away from the measurement starting point 4. The clearance measuring surface 5-1 is parallel to the measurement starting point. The spacing between 4 is used to characterize the clearance value between the tire and the vehicle body; the surface difference measuring block 6 is slidably mounted on the horizontal reference frame 3 and can slide along the length direction of the horizontal reference frame 3. The side of the surface difference measuring block 6 facing the measurement starting point 4 is provided with a surface difference measuring surface 6-1 parallel to the vertical reference frame 2. The spacing between the surface difference measuring surface 6-1 and the measurement starting point 4 is used to characterize the surface difference value between the tire and the vehicle body; the level 7 is set on the horizontal reference frame 3 or the surface difference measuring block 6. The level 7 is used to detect whether the horizontal reference frame 3 is parallel to the horizontal plane, so as to eliminate the measurement error caused by the different placement angle of the right angle reference frame 1 during use, which is beneficial to improving the measurement accuracy.

[0048] In this embodiment, the vertical reference frame 2 and the horizontal reference frame 3 of the right-angle reference frame 1 can be detachable separate structures or arranged as an integral structure. In actual use, the distance between the gap measuring surface 5-1 and the measurement starting point 4, and the distance between the surface difference measuring surface 6-1 and the measurement starting point 4, can be measured using other measuring devices, such as rulers or measuring tapes, or directly read during measurement by setting scale lines on the vertical reference frame 2 and the horizontal reference frame 3. To improve measurement efficiency and accuracy, this embodiment preferably sets corresponding measurement scale lines on both the vertical reference frame 2 and the horizontal reference frame 3. Generally, after the gap measuring surface 5-1 or the surface difference measuring surface 6-1 reaches the corresponding measurement position, the corresponding scale value is the gap value or surface difference value to be measured.

[0049] Furthermore, such as Figures 1-4As shown, the right-angle reference frame 1 in this embodiment specifically adopts a square. The square not only has a right-angle structure, but also its two inner right-angled sides and two outer right-angled sides are all straight lines, which can all serve as effective measurement references. At the same time, the square also has precise scale lines. In this embodiment, one side of the square serves as the aforementioned vertical reference frame 2, and the outer edge of the vertical reference frame 2 is provided with an outer vertical measurement scale 8. The other side of the square serves as a horizontal reference frame 3, and the outer edge of the horizontal reference frame 3 is provided with an outer horizontal measurement scale 10. The zero mark of the outer horizontal measurement scale 10 and the zero mark of the outer vertical measurement scale 8 coincide at the outer corner tip of the square, forming the aforementioned measurement starting point 4.

[0050] Furthermore, such as Figures 1-4 As shown, in this embodiment, the vertical reference frame 2 also has an inner vertical measurement scale 9 on its inner edge, and the horizontal reference frame 3 also has an inner horizontal measurement scale 11 on its inner edge. The zero line of the inner horizontal measurement scale 11 and the zero line of the inner vertical measurement scale 9 coincide at the inner corner of the square. Simultaneously setting scale lines on both sides of the vertical reference frame 2 and the horizontal reference frame 3 improves the accuracy of numerical readings. Furthermore, the outer vertical measurement scale 8, inner vertical measurement scale 9, outer horizontal measurement scale 10, and inner horizontal measurement scale 11 can be of the same specifications or different sizes. As a preferred embodiment, the outer vertical measurement scale 8, inner vertical measurement scale 9, outer horizontal measurement scale 10, and inner horizontal measurement scale 11 are of the same size.

[0051] In this embodiment, considering that the vertical reference frame 2 will serve as the vertical reference for surface difference measurement, its length is set to be greater than the length of the horizontal reference frame 3. Generally, it is preferable that the length of the vertical reference frame 2 is not less than the diameter of the tire to be measured.

[0052] In this embodiment, the level 7 is preferably mounted on the surface difference measuring block 6 by snap-fitting, screwing, bonding, or welding to avoid obstructing the scale lines and hindering data reading when the level 7 is mounted on the level reference frame 3. The level 7 can be an existing electronic level, magnetic level, universal level, ruler level, or bubble level. To reduce manufacturing costs, the level 7 in this embodiment is preferably a bubble level, which is snap-fitted onto the surface difference measuring block 6, allowing direct observation of the bubble's position. The bubble level is an existing structure, and its specific structure and measurement principle will not be described in detail here.

[0053] In this embodiment, as Figures 1-4As shown, the gap measuring block 5 is preferably a rectangular block with flush end faces and parallel ends. Given that the surface difference value of the wheel hole is generally small, and due to the existence of the corner structure of the square, if the surface difference measuring block 6 is set as a rectangular block with the same shape as the gap measuring block 5, then its surface difference measuring block 6-1 cannot reach the outer edge of the vertical reference frame 2. Therefore, it is necessary to extend the surface difference measuring block 6-1 relative to the surface difference measuring block 6 to a certain extent so that the surface difference measuring block 6-1 can still reach the outer edge of the vertical reference frame 2 after the surface difference measuring block 6 is restricted by the inner corner of the square. Based on this, the surface difference measuring block 6 can be configured as two parts: an inner sliding block and an outer sliding block. The inner and outer sliding blocks slide along the inner and outer edges of the horizontal reference frame 3, respectively. The inner and outer sliding blocks are staggered and connected to each other to ensure that the inner and outer sliding blocks can move as a whole. The surface difference measuring block 6-1 is set on the outer sliding block to ensure that when the inner sliding block reaches the inner corner position of the square, the surface difference measuring block 6-1 on the outer sliding block is just flush with or extends beyond the outer edge of the vertical reference frame 2. Correspondingly, the aforementioned level is generally installed on the inner sliding block.

[0054] The following is a detailed description of the usage of the wheel hole clearance and surface difference measuring device 100 described in this embodiment. The right-angle reference frame 1 is a square structure, and the numerical units of the outer vertical measuring scale 8, the inner vertical measuring scale 9, the outer horizontal measuring scale 10, and the inner horizontal measuring scale 11 on the square are all millimeters (mm).

[0055] (a) The wheel bore clearance and surface difference measuring device 100 described above is used to measure the wheel bore clearance. The specific wheel bore clearance measurement method is as follows:

[0056] like Figure 2 As shown, first adjust the angle ruler so that its horizontal reference frame 3 is below the vertical reference frame 2, and the opening of the angle ruler faces the vehicle body. Then, place the outer edge of the horizontal reference frame 3 against the top of the outer periphery of the tire 200, and adjust the horizontal reference frame 3 to be parallel to the horizontal plane by observing the level bubble. Generally, when the bubble in the level bubble is between the two level scale lines 7-1, it is considered that the horizontal reference frame 3 is parallel to the horizontal plane. Then, move the angle ruler horizontally inward into the vehicle body until the inner edge of the vertical reference frame 2 against the outer surface of the vehicle body. At this time, the gap measuring block 5 is located at the junction of the vertical reference frame 2 and the horizontal reference frame 3. Then, move the gap measuring block 5 upward until the gap measuring surface 5-1 contacts the top contour of the wheel hole of the vehicle body, as shown. Figure 2 As shown, accurately position the measuring tool. Finally, read the corresponding scale value on the outer vertical measuring scale 8 of the clearance measuring surface 5-1; this is the tire clearance relative to the vehicle body. Figure 2As shown, the scale value corresponding to the gap measurement surface 5-1 is 95mm, which means that the measured gap between the tire and the vehicle body is 95mm.

[0057] (II) The wheel cavity clearance and surface difference measuring device 100 described above is used to measure the wheel cavity surface difference. The specific wheel cavity surface difference measurement method is as follows:

[0058] like Figure 3 and Figure 4 As shown, first adjust the square so that its horizontal reference frame 3 is above the vertical reference frame 2, and the opening of the square is away from the vehicle body. Then place the square under the vehicle body, and place the outer edge of the vertical reference frame 2 against the outer surface of the tire 200. Adjust the vertical reference frame 2 to be perpendicular to the horizontal plane. During the measurement process, it is generally preferred that the outer edge of the vertical reference frame 2 contacts the outermost point on the outer side of the tire 200, usually the upper and lower points on the outermost side of the tire 200, and ensure that the entire square is in the vertical plane passing through the axis of the tire 200, that is, the axis of the tire 200 should be in the plane of the entire square. Then move the square vertically upward until the outer edge of the horizontal reference frame 3 contacts the top contour of the wheel hole on the vehicle body. At this time, the surface difference measuring block 6 is located on the outside of the vehicle body. Then move the surface difference measuring block 6 toward the vehicle body until the surface difference measuring surface 6-1 contacts the outer side of the vehicle body, as shown. Figure 4 As shown, accurately position the measuring tools. Finally, read the scale value corresponding to the outer horizontal measurement scale 10 on the surface difference measurement surface 6-1; this is the surface difference between the tire and the vehicle body. Figure 4 As shown, the scale value corresponding to the surface difference measurement surface 6-1 is 22mm, which means that the measured surface difference between the tire and the car body is 22mm.

[0059] Therefore, the wheel hole clearance and surface difference measuring device 100 of this embodiment can be assembled using a standard square and a level, making it easy to manufacture. It can measure the wheel hole clearance and surface difference using the upper and outer surfaces of the tire as references. The level can be fixed to the surface difference measuring block on the square using various connection methods such as snap-fit, screw-fit, adhesive, and welding, allowing for flexible manufacturing methods.

[0060] When using the aforementioned wheel hole clearance and surface difference measuring device to measure wheel hole clearance, the setting of the level instrument ensures that the horizontal reference frame is placed parallel to the horizontal plane, eliminating measurement errors caused by the angle error of the measuring instrument placement and unifying the measurement standard of wheel hole clearance.

[0061] When using the aforementioned wheel hole clearance and surface difference measuring device to measure wheel hole surface difference, the outer side of the tire is used as the measurement reference, eliminating the measurement error caused by the angle of the measuring tool placement and unifying the measurement standard for surface difference.

[0062] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0063] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A device for measuring wheel hole clearance and surface difference, characterized in that, include: A right-angle reference frame includes a vertical reference frame and a horizontal reference frame arranged perpendicularly to the vertical reference frame. The outer corner of the right-angle reference frame is the common measurement starting point for both the vertical and horizontal reference frames. The right-angle reference frame is a square. One side of the square is the vertical reference frame, and its outer edge is provided with an outer vertical measurement scale. The other side of the square is the horizontal reference frame, and its outer edge is provided with an outer horizontal measurement scale. The zero line of the outer horizontal measurement scale and the zero line of the outer vertical measurement scale coincide at the outer corner of the square. The vertical reference frame also has an inner vertical measurement scale on its inner edge, and the horizontal reference frame also has an inner horizontal measurement scale on its inner edge. The zero line of the inner horizontal measurement scale and the zero line of the inner vertical measurement scale coincide at the inner corner of the square. When measuring wheel hole clearance, the opening of the square is arranged facing the vehicle body, the outer edge of the horizontal reference frame of the square is against the top of the outer periphery of the tire, and the inner edge of the vertical reference frame of the square is against the outer surface of the vehicle body; when measuring wheel hole surface difference, the opening of the square is arranged away from the vehicle body, the outer edge of the vertical reference frame of the square is against the outer surface of the tire, and the outer edge of the horizontal reference frame of the square is in contact with the top contour of the wheel hole of the vehicle body. A gap measuring block is slidably mounted on the vertical reference frame and can slide along the length of the vertical reference frame; A gap measuring surface parallel to the horizontal reference frame is provided on the side of the gap measuring block opposite to the measurement starting point. The distance between the gap measuring surface and the measurement starting point is used to characterize the gap value between the tire and the vehicle body. A surface difference measuring block is slidably mounted on the horizontal reference frame and is capable of sliding along the length direction of the horizontal reference frame; The surface difference measuring block has a surface difference measuring surface parallel to the vertical reference frame on one side facing the measurement starting point. The distance between the surface difference measuring surface and the measurement starting point is used to characterize the surface difference value of the tire relative to the vehicle body. A level, which is mounted on the horizontal reference frame or the surface difference measuring block, is used to detect whether the horizontal reference frame is parallel to the horizontal plane.

2. The wheel hole clearance and surface difference measuring device according to claim 1, characterized in that, The level is mounted on the surface difference measuring block by means of snap-fit, screw-fit, adhesive or welding.

3. The wheel hole clearance and surface difference measuring device according to claim 1, characterized in that, The level is an electronic level, a magnetic level, a universal level, a ruler level, or a bubble level.

4. The wheel hole clearance and surface difference measuring device according to any one of claims 1 to 3, characterized in that, The length of the vertical reference frame is not less than the diameter of the tire.

5. The wheel hole clearance and surface difference measuring device according to any one of claims 1 to 3, characterized in that, The length of the horizontal reference frame is less than the length of the vertical reference frame.

6. A method for measuring wheel bore clearance, implemented using the wheel bore clearance and surface difference measuring device as described in claim 1, characterized in that, include: Adjust the angle ruler so that the horizontal reference frame is located below the vertical reference frame, and the opening of the angle ruler faces the vehicle body; Place the outer edge of the horizontal reference frame in the square against the top of the outer periphery of the tire, and adjust the horizontal reference frame to be parallel to the horizontal plane; Move the angle ruler horizontally into the vehicle body until the inner edge of the vertical reference frame in the angle ruler abuts against the outer surface of the vehicle body; Move the gap measuring block upwards until the gap measuring surface contacts the top contour of the wheel hole in the vehicle body; The gap between the tire and the vehicle body is determined by reading the scale value corresponding to the vertical measurement scale on the outer side of the gap measuring surface.

7. A method for measuring wheel hole surface difference, implemented using the wheel hole clearance and surface difference measuring device as described in claim 1, characterized in that, include: Adjust the angle ruler so that the horizontal reference frame is above the vertical reference frame, and the opening of the angle ruler is away from the vehicle body; Place the outer edge of the vertical reference frame in the square against the outer surface of the tire, and adjust the vertical reference frame to be perpendicular to the horizontal plane; Move the angle ruler vertically upward until the outer edge of the horizontal reference frame in the angle ruler contacts the top contour of the wheel hole in the vehicle body; Move the surface difference measuring block toward the vehicle body until the surface difference measuring surface contacts the outer side of the vehicle body; The surface difference measurement surface is read from the corresponding scale value on the outer horizontal measurement scale, which is the surface difference between the tire and the vehicle body.

Images