Simple flatness measuring device and method

Abstract

The invention provides a simple flatness measuring device and method, the simple flatness measuring device comprises a positioning datum line, a positioning datum point and an indication type measuring tool, the positioning datum line and the positioning datum point are matched to determine a positioning datum plane, and the indication type measuring tool can move along the vertical direction of the positioning datum plane relative to the positioning datum plane and can be fixed. The surface of the to-be-measured object is measured through the positioning datum plane formed by the positioning datum line and the positioning datum point in cooperation with the calibrated indication type measuring tool, for example, the flatness of the surface of the to-be-measured object is measured, the method can be suitable for measurement of the vertical face, the inclined face and the outer surface of the object with the small working space, and the use flexibility is high.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and in particular to a simple flatness measurement device and method. Background Art

[0002] The traditional method of measuring planes is to take points on the measuring equipment to form a plane for measurement. Disadvantages: large parts cannot be measured on the measuring equipment, and the probes required for some smaller measuring surfaces are expensive. Use indicating measuring tools to translate on the plane to calculate the difference between high and low points. Disadvantages: A set of high-precision translation devices is required, and it is not suitable for on-site measurement. Use a measuring ruler to determine according to the light transmission method. Disadvantages: It is impossible to read, and it relies too much on experience.

[0003] The existing Chinese patent application document with announcement number CN103075950B discloses a method for measuring the flatness of a tab using a flatness measuring device, wherein the flatness measuring device includes a platform supported by a column, a battery fixing plate that can be driven to move vertically up and down relative to the platform, and a digital micrometer fixedly arranged above the platform, wherein the battery fixing plate includes a horizontal carrier plate, a U-shaped limit plate arranged on the horizontal carrier plate, and a groove arranged at the opening of the U-shaped limit plate corresponding to the tab boss of the battery; the digital micrometer includes a display screen, a vertically arranged measuring rod, and a measuring block fixedly connected to the measuring rod, wherein the width of the measuring block corresponds to the tab.

[0004] The measuring equipment in the prior art needs to be fixed on a platform, has poor flexibility in use, and needs to be improved. Summary of the invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a simple device and method for measuring flatness.

[0006] A simple flatness measuring device provided by the present invention comprises a positioning reference line, a positioning reference point and an indicating measuring tool, wherein the positioning reference line and the positioning reference point cooperate to determine a positioning reference plane, and the indicating measuring tool can be moved in a direction perpendicular to the positioning reference plane and can be fixed relative to the positioning reference plane.

[0007] Preferably, it also includes a mounting seat, on which a reference block and a spherical reference are fixedly configured, one end of the reference block forms a positioning reference line, one end of the spherical reference forms a positioning reference point, and the positioning reference line and the positioning reference point are in the same plane.

[0008] Preferably, the reference block is formed with a positioning reference line with one end thereof being an inclined knife-edge structure.

[0009] Preferably, a mounting hole for mounting an indicating measuring tool is reserved on the mounting seat, and the indicating measuring tool can move axially along the mounting hole. A locking nut for fixing the indicating measuring tool is also arranged on the mounting seat.

[0010] Preferably, the mounting seat, the reference block and the spherical reference may be an integrated structure or a separate structure.

[0011] Preferably, it further comprises a standard flat plate, wherein the outer surface of the standard flat plate allows contact with both the positioning reference line and the positioning reference point at the same time;

[0012] The outer surface of the standard plane also allows contact with the probe of an indicating gauge.

[0013] Preferably, the mounting seat is also provided with a visualization device for displaying the movement stroke of the indicator-type measuring tool.

[0014] A method for simply measuring a flatness device according to the present invention comprises the following steps:

[0015] Step S1, fixing the indicating measuring tool relative to the positioning reference line and the positioning reference point, and calibrating the indicating measuring tool;

[0016] Step S2, fitting the positioning reference line and the positioning reference point to the surface of the object to be measured, and reading the measurement value of the indicating measuring tool;

[0017] Step S3: Calculate the flatness of the surface of the object to be measured according to the measurement value of the indicating measuring tool.

[0018] Preferably, step S1 further includes the following sub-arrangements:

[0019] Step S1.1, fitting the positioning reference line and the positioning reference point to the outer surface of the standard plate;

[0020] Step S1.2, calibrate the probe of the indicating measuring tool by contacting it with the outer surface of the standard plate and fix the indicating measuring tool.

[0021] Preferably, if the part to be measured includes a boss and / or a recess, the measurement is performed after adjusting the measuring range of the indicating gauge.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention uses a positioning reference plane formed by a positioning reference line and a positioning reference point, and cooperates with a calibrated indicating measuring tool to measure the surface of the object to be measured, such as measuring the flatness of the surface of the object to be measured. It can be applied to the measurement of vertical surfaces, inclined surfaces, and the outer surfaces of objects with small working spaces, and has high flexibility in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 The figure is a schematic diagram of the overall structure of the simple flatness measuring device mainly embodied in the present invention.

[0026] As shown in the figure: 1. Positioning reference line; 2. Positioning reference point; 3. Indicating measuring tool; 4. Locking nut. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0028] like Figure 1 As shown, a simple flatness measuring device and method provided according to the present invention includes a positioning reference line 1, a positioning reference point 2 and an indicating measuring tool 3. The positioning reference line 1 and the positioning reference point 2 cooperate to determine a positioning reference plane. The indicating measuring tool 3 can be moved in a direction perpendicular to the positioning reference plane and can be fixed relative to the positioning reference plane.

[0029] The positioning reference plane formed by the positioning reference line 1 and the positioning reference point 2 is used in conjunction with the calibrated indicating measuring tool 3 to measure the surface of the object to be measured, for example, to measure the flatness of the surface of the object to be measured. In terms of use, it can be suitable for measuring vertical surfaces, inclined surfaces and the outer surfaces of objects with small working spaces.

[0030] Specifically, it also includes a mounting seat, on which a reference block and a spherical reference are fixedly arranged, a positioning reference line 1 is formed at one end of the reference block, and a positioning reference point 2 is formed at one end of the spherical reference, and the positioning reference line 1 and the positioning reference point 2 are in the same plane. The mounting seat, the reference block and the spherical reference can be an integrated structure or a split structure. For example, they can be connected by screws, welding, riveting, etc. The indicating measuring tool 3 has a certain degree of flexibility within the measuring range, and is used for plane measurement, and the indicating measuring tool 3 only needs to be fixed to the mounting seat.

[0031] More specifically, the reference block is formed with a slanted blade structure at one end of the positioning reference line 1. A mounting hole for mounting the indicating measuring tool 3 is reserved on the mounting seat, and the indicating measuring tool 3 can move along the axial direction of the mounting hole. The mounting seat is also provided with a locking nut 4 for fixing the indicating measuring tool 3. A standard flat plate is also included, and the outer surface of the standard plane is allowed to contact both the positioning reference line 1 and the positioning reference point 2 at the same time, and the outer surface of the standard plane is also allowed to contact the probe of the indicating measuring tool 3. According to the principle of value transfer, the plane measuring instrument is calibrated using the flatness of the standard flat plate so that the zero position of the indicating measuring tool 3 reaches the standard plane. Then measure on the measured part.

[0032] In a preferred embodiment, a visualization device for displaying the movement stroke of the indicator-type measuring tool 3 is also provided on the mounting seat.

[0033] The simple flatness measuring device of the present application can solve the problem that large parts are inconvenient to carry to a three-coordinate measuring instrument. The flatness is judged by the light transmittance of the knife edge ruler. The measuring device uses the indicating gauge 3 to make the reading more intuitive. If there is a boss or a recess on the measuring part, the flatness measurement can be adjusted to solve the problem by adjusting the measuring range of the indicating gauge 3. This can solve the problem of on-site measurement without the need for large measuring instruments. During the machining process, there is no need to clamp the parts multiple times for measurement. The readings can be read and the values ​​can be transferred. Simple measurement and judgment of complex parts can be achieved.

[0034] A method for simply measuring a flatness device according to the present invention comprises the following steps:

[0035] Step S1, fix the indicating measuring tool 3 relative to the positioning reference line 1 and the positioning reference point 2, and calibrate the indicating measuring tool 3. Step S1 also includes the following sub-arrangements:

[0036] Step S1.1, fit the positioning reference line 1 and the positioning reference point 2 to the outer surface of the standard plate.

[0037] Step S1.2, bringing the probe of the indicating measuring tool 3 into contact with the outer surface of the standard plate for calibration and fixing the indicating measuring tool 3.

[0038] Step S2, fit the positioning reference line 1 and the positioning reference point 2 to the surface of the object to be measured, and read the measurement value of the indicating measuring tool 3.

[0039] Step S3, calculating the flatness of the surface of the object to be measured according to the measurement value of the indicating measuring tool 3.

[0040] Preferably, if the measured part includes a boss and / or a recess, the measurement is performed after adjusting the measuring range of the indicating measuring tool 3 .

[0041] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A simple flatness measuring device, characterized in that: The invention comprises a positioning reference line (1), a positioning reference point (2) and an indicating measuring tool (3); the positioning reference line (1) and the positioning reference point (2) cooperate to determine a positioning reference plane; the indicating measuring tool (3) can move relative to the positioning reference plane in a direction perpendicular to the positioning reference plane and can be fixed.

2. The simple flatness measuring device according to claim 1, characterized in that: It also includes a mounting seat, on which a reference block and a spherical reference are fixedly arranged, one end of the reference block forms a positioning reference line (1), one end of the spherical reference forms a positioning reference point (2), and the positioning reference line (1) and the positioning reference point (2) are in the same plane.

3. The simple flatness measuring device according to claim 2, characterized in that: The reference block is formed with a positioning reference line (1) with one end thereof being an inclined knife-edge structure.

4. The simple flatness measuring device according to claim 2, characterized in that: A mounting hole for mounting an indicating measuring tool (3) is reserved on the mounting seat, and the indicating measuring tool (3) can move axially along the mounting hole. A locking nut (4) for fixing the indicating measuring tool (3) is also arranged on the mounting seat.

5. The simple flatness measuring device according to claim 2, characterized in that: The mounting seat, the reference block and the spherical reference may be an integrated structure or a separate structure.

6. The simple flatness measuring device according to claim 1, characterized in that: Also included is a standard flat plate, the outer surface of which allows contact with both the positioning reference line (1) and the positioning reference point (2) at the same time; The outer surface of the standard plane is also allowed to contact with the probe of the indicating measuring tool (3).

7. The simple flatness measuring device according to claim 1, characterized in that: The mounting seat is also provided with a visualization device for displaying the movement stroke of the indicator-type measuring tool (3).

8. A method for simply measuring a flatness device, characterized in that: The simple flatness measuring device according to any one of claims 1 to 7 comprises the following steps: Step S1, fixing the indicating measuring tool (3) relative to the positioning reference line (1) and the positioning reference point (2), and calibrating the indicating measuring tool (3); Step S2, fitting the positioning reference line (1) and the positioning reference point (2) to the surface of the object to be measured, and reading the measurement value of the indicating measuring tool (3); Step S3, calculating the flatness of the surface of the object to be measured according to the measurement value of the indicating measuring tool (3).

9. The method for measuring flatness of a simple device as claimed in claim 8, characterized in that: Step S1 also includes the following sub-arrangements: Step S1.1, fitting the positioning reference line (1) and the positioning reference point (2) to the outer surface of the standard plate; Step S1.2, bringing the probe of the indicating measuring tool (3) into contact with the outer surface of the standard plate for calibration and fixing the indicating measuring tool (3).

10. The method for measuring flatness of a simple device as claimed in claim 8, characterized in that: If the measured part includes convex and / or concave surfaces, the measurement is performed after adjusting the measuring range of the indicating gauge (3).

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