Locked surface profilometer for surface measurement

Abstract

The locked surface profilometer for surface measurement of the present invention includes a measurement table for the object to be measured and a profile measurement mechanism. The upper end of the measurement table for the object to be measured is fixedly connected to the lower end of the profile measurement mechanism. The profile measurement mechanism includes a plurality of vertical guide rods, a pressing plate assembly, and a measurement needle bundle. The vertical guide rods are distributed at the edge of the measurement table for the object to be measured, and the lower ends of the vertical guide rods are fixedly connected to the measurement table for the object to be measured. The edge of the pressing plate assembly is provided with through holes that cooperate with the vertical guide rods so as to be able to move up and down along the vertical guide rods. A plurality of needle bundle holes are evenly distributed on the pressing plate assembly, and the measurement needle bundle is fixed in the needle bundle holes. During measurement, first place the object to be measured directly below the measurement needle bundle and make the measurement surface face the measurement needle bundle, and then make the bottom of the measurement needle bundle contact the measurement surface. By observing the measurement of the measurement needle bundle at the upper surface of the pressing plate assembly, the deformation condition of the surface of the object to be measured can be measured.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring tools, and particularly to a locked surface profilometer for surface measurement. Background Art

[0002] A profilometer is used for measuring the flatness of the contour of an object. For example, the technical solution disclosed in the invention patent with the application number 201920934438.5 and the name "A Profilometer" is "comprising a first support and a second support, the first support and the second support are connected by a connecting rod, a contour plate assembly is sleeved on the connecting rod between the first support and the second support, the contour plate assembly is composed of a plurality of shaping thin plates with the same structure, and each shaping thin plate of the contour plate assembly can slide back and forth on the connecting rod, and a contour assembly locking mechanism is further arranged in the first support or the second support." This solution measures the contour of the side surface of the object through the contour plate assembly. This solution can accurately measure the contour of an object with a relatively narrow measurement surface. However, when the measurement surface is relatively wide, the part of the area that exceeds the measurement range of the profilometer cannot be measured, so the contour of the side surface of the object measured by the profilometer cannot reflect the true situation of the contour. Summary of the Invention

[0003] In view of this, it is necessary to provide a locked surface profilometer for surface measurement that can accurately measure the entire measurement surface.

[0004] A locked surface profilometer for surface measurement comprises a measurement table for the object to be measured and a contour measurement mechanism. The upper end of the measurement table for the object to be measured is fixedly connected to the lower end of the contour measurement mechanism. The contour measurement mechanism comprises a plurality of vertical guide rods, a pressing plate assembly, and a measurement needle bundle. The vertical guide rods are distributed at the edge of the measurement table for the object to be measured, and the lower ends of the vertical guide rods are fixedly connected to the measurement table for the object to be measured. Through holes matching with the vertical guide rods are arranged at the edge of the pressing plate assembly so as to be able to move up and down along the vertical guide rods. A plurality of needle bundle holes are evenly distributed on the pressing plate assembly, and the measurement needle bundle is fixed in the needle bundle holes. A measurement mark is arranged on the measurement needle bundle to measure the deformation of the plane according to the measurement situation of the measurement needle bundle.

[0005] Preferably, the measurement mark is a gradient color mark, and the colors at the same measurement position are the same.

[0006] Preferably, the measurement table for the object to be measured comprises support legs and a fixed frame. The upper ends of the support legs are fixedly connected to the fixed frame, and the fixed frame is in a square shape with an opening.

[0007] Preferably, a spirit level is arranged on the side wall of the fixed frame to facilitate the measurement personnel to adjust the level of the fixed frame.

[0008] Preferably, the support leg includes a lower support rod and an upper support rod, which are threadedly connected to adjust the height of the support leg. The upper end of the upper support rod is connected to the support frame through a ball joint.

[0009] Preferably, the pressing plate assembly includes a first pressing plate, a second pressing plate, a pressing plate frame, a first mesh plate, a second mesh plate, and a guide rail frame. The first pressing plate and the second pressing plate are arranged in parallel on the pressing plate frame. The first mesh plate and the second mesh plate are respectively located on the upper and lower sides of the pressing plate frame. The guide rail frame is located outside the pressing plate frame. At least two threaded holes are provided on the guide rail frame and the pressing plate frame, and the guide rail frame and the pressing plate frame are fixedly connected by fastening screws. The vertical guide rod is located in the gap between the guide rail frame and the pressing plate frame. The first mesh plate and the second mesh plate are provided with through holes that match the vertical guide rod so as to be able to move up and down along the vertical guide rod. The first pressing plate and the second pressing plate are provided with needle beam holes that match the measuring needle beam. The needle beam holes are in clearance fit with the measuring needle beam. The aperture diameters of the first mesh plate and the second mesh plate are larger than the diameter of the needle beam holes.

[0010] Beneficial effects: The lockable surface profilometer for surface measurement of the present invention includes a test object measurement table and a profile measurement mechanism. The upper end of the test object measurement table is fixedly connected to the lower end of the profile measurement mechanism. The profile measurement mechanism includes a plurality of vertical guide rods, a pressing plate assembly, and a measuring needle beam. The vertical guide rods are distributed at the edge of the test object measurement table, and the lower ends of the vertical guide rods are fixedly connected to the test object measurement table. The edge of the pressing plate assembly is provided with through holes that match the vertical guide rods so as to be able to move up and down along the vertical guide rods. A plurality of needle beam holes are evenly distributed on the pressing plate assembly, and the measuring needle beam is fixed in the needle beam holes. During measurement, first place the test object directly below the measuring needle beam and make the measurement surface face the measuring needle beam, and then make the bottom of the measuring needle beam contact the measurement surface. By observing the measurement value of the measuring needle beam at the upper surface of the pressing plate assembly, the deformation of the surface of the test object can be measured. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the lockable surface profilometer for surface measurement of the present invention.

[0012] Figure 2 is Figure 1 a partial structural diagram of

[0013] Figure 3 is a partial cross-sectional view of the lockable surface profilometer for surface measurement of the present invention.

[0014] Figure 4 is another partial cross-sectional view of the lockable surface profilometer for surface measurement of the present invention.

[0015] Figure 5Schematic diagram of the split structure of the lockable surface profilometer for surface measurement according to the present invention.

[0016] In the figure: The lockable surface profilometer 10 for surface measurement, the object-to-be-measured measurement table 20, the support legs 201, the lower support rod 2011, the upper support rod 2012, the fixed frame 202, the level 2021, the profile measurement mechanism 30, the vertical guide rod 301, the pressing plate assembly 302, the first pressing plate 3021, the second pressing plate 3022, the pressing plate frame 3023, the first mesh plate 3024, the second mesh plate 3025, the guide rail frame 3026, the fastening screw 3027, the measuring needle bundle 303. Detailed implementation manners

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Please refer to Figures 1 to 5 , a lockable surface profilometer 10 for surface measurement includes an object-to-be-measured measurement table 20 and a profile measurement mechanism 30. The upper end of the object-to-be-measured measurement table 20 is fixedly connected to the lower end of the profile measurement mechanism 30. The profile measurement mechanism 30 includes a plurality of vertical guide rods 301, a pressing plate assembly 302, and a measuring needle bundle 303. The vertical guide rods 301 are distributed on the edge of the object-to-be-measured measurement table 20, and the lower ends of the vertical guide rods 301 are fixedly connected to the object-to-be-measured measurement table 20. Through holes matching the vertical guide rods 301 are provided at the edge of the pressing plate assembly 302 so as to be able to move up and down along the vertical guide rods 301. A plurality of needle bundle holes are evenly distributed on the pressing plate assembly 302, and the measuring needle bundle 303 is fixed in the needle bundle holes. A scale mark is provided on the measuring needle bundle 303 to measure the deformation of the plane according to the measurement situation of the measuring needle bundle 303.

[0019] The measuring needle bundle 303 is composed of individual measuring needles. Scale marks are set on the measuring needles. The diameter and density of the measuring needles can be set according to the required measurement accuracy. For example, if high measurement accuracy is required, then the diameter of the measuring needles is made small and the density is large. In order not to make the figure too messy, only part of the measuring needle bundle 303 is drawn in the figure. In fact, the measuring needle bundle 303 covers the pressing plate assembly 302.

[0020] Further, the scale mark is a gradient color mark, and the colors at the same measurement are the same.

[0021] In a preferred embodiment, the gradient color identifier is a rainbow gradient color. The gradient degree is set according to the actual deformation of the object. For example, if the deformation of the object is small, then the color transitions slowly, so that a more intuitive judgment of the deformation of the object can be made.

[0022] By observing the overall color change of the measurement needle beam 303 on the upper surface of the platen assembly 302, the deformation of the surface of the object to be measured can be seen. Taking the gradient color identifier as a rainbow gradient color as an example, if there is a large-area but very inconspicuous depth change pit in a part of the object to be measured, then a gradient color block formed by the measurement needle beam 303 can be seen on the measurement needle beam 303 facing the pit, so that the measurement personnel can intuitively see the deformation of the surface of the object to be measured.

[0023] Furthermore, the object to be measured table 20 includes support legs 201 and a fixed frame 202. The upper ends of the support legs 201 are fixedly connected to the fixed frame 202, and the fixed frame 202 is in a square shape.

[0024] Furthermore, a spirit level 2021 is provided on the side wall of the fixed frame 202 to facilitate the measurement personnel to adjust the level of the fixed frame 202.

[0025] Furthermore, the support leg 201 includes a lower support rod 2011 and an upper support rod 2012. The lower support rod 2011 is threadedly connected to the upper support rod 2012 to adjust the height of the support leg 201. The upper end of the upper support rod 2012 is connected to the support frame through a ball joint.

[0026] Adjust the lower support rod 2011 and the upper support rod 2012 according to the different heights of the object to be measured, so as to meet the usage requirements of objects to be measured with different heights. In this way, it can also ensure that the measurement needle beam 303 does not exceed the platen assembly 302 too much, affecting the observation of the measurement personnel.

[0027] Further, the pressing plate assembly 302 includes a first pressing plate 3021, a second pressing plate 3022, a pressing plate frame 3023, a first mesh plate 3024, a second mesh plate 3025, and a guide rail frame 3026. The first pressing plate 3021 and the second pressing plate 3022 are arranged in parallel on the pressing plate frame 3023. The first mesh plate 3024 and the second mesh plate 3025 are respectively located on the upper and lower sides of the pressing plate frame 3023. The guide rail frame 3026 is located outside the pressing plate frame 3023. At least two threaded holes are provided on the guide rail frame 3026 and the pressing plate frame 3023. The guide rail frame 3026 and the pressing plate frame 3023 are fixedly connected by fastening screws 3027. The vertical guide rod 301 is located in the gap between the guide rail frame 3026 and the pressing plate frame 3023. The first mesh plate 3024 and the second mesh plate 3025 are provided with through holes that match the vertical guide rod 301 so as to be able to move up and down along the vertical guide rod 301. The first pressing plate 3021 and the second pressing plate 3022 are provided with needle beam holes that match the measuring needle beam 303. The needle beam holes are in clearance fit with the measuring needle beam 303. The aperture diameters of the first mesh plate 3024 and the second mesh plate 3025 are larger than the diameter of the needle beam holes.

[0028] During measurement, first loosen the fastening screw 3027 to allow the measuring needle beam 303 to move downward under the action of gravity until all the measuring needles contact the surface to be measured. Then tighten the fastening screw 3027. Under the action of the fastening screw 3027, the holes on the pressing plate and the mesh plate are offset. In this way, the pressing plate and the mesh plate can generate a lateral pressure on the fastening screw 3027, thereby generating a frictional force on the measuring needle beam 303. Under the action of the frictional force, the position of the measuring needle beam 303 can be fixed. Then lift the pressing plate assembly 302, and the position of the measuring needle beam 303 can reflect the deformation of the measured object surface.

[0029] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A locked surface profilometer for surface measurement, characterized in that: It includes a test object measuring table and a profile measuring mechanism. The upper end of the test object measuring table is fixedly connected to the lower end of the profile measuring mechanism. The profile measuring mechanism includes a plurality of vertical guide rods, a pressing plate assembly, and a measuring needle bundle. The vertical guide rods are distributed at the edge of the test object measuring table, and the lower ends of the vertical guide rods are fixedly connected to the test object measuring table. Through holes matching the vertical guide rods are provided at the edge of the pressing plate assembly so that it can move up and down along the vertical guide rods. A plurality of needle bundle holes are evenly distributed on the pressing plate assembly, and the measuring needle bundle is fixed in the needle bundle holes. A measurement mark is provided on the measuring needle bundle to measure the deformation of the plane according to the measurement situation of the measuring needle bundle. The pressing plate assembly includes a first pressing plate, a second pressing plate, a pressing plate frame, a first mesh plate, a second mesh plate, and a guide rail frame. The first pressing plate and the second pressing plate are arranged in parallel on the pressing plate frame. The first mesh plate and the second mesh plate are respectively located on the upper and lower sides of the pressing plate frame. The guide rail frame is located outside the pressing plate frame. At least two threaded holes are provided on the guide rail frame and the pressing plate frame, and the guide rail frame and the pressing plate frame are fixedly connected by fastening screws. The vertical guide rods are located in the gap between the guide rail frame and the pressing plate frame. Through holes matching the vertical guide rods are provided on the first mesh plate and the second mesh plate so that they can move up and down along the vertical guide rods. Needle bundle holes matching the measuring needle bundle are provided on the first pressing plate and the second pressing plate. The needle bundle holes are in clearance fit with the measuring needle bundle. The hole diameters of the first mesh plate and the second mesh plate are larger than the diameter of the needle bundle holes.

2. The locked surface profilometer for surface measurement according to claim 1, characterized in that: The measurement mark is a gradient color mark, and the colors at the same measurement point are the same.

3. The lockable surface profilometer for surface measurement according to claim 1, characterized in that: The test object measuring table includes support legs and a fixed frame. The upper ends of the support legs are fixedly connected to the fixed frame, and the fixed frame is in a rectangular shape with an opening.

4. The lockable surface profilometer for surface measurement according to claim 3, characterized in that: A spirit level is provided on the side wall of the fixed frame to facilitate the measurement personnel to adjust the level of the fixed frame.

5. The locked surface profilometer for surface measurement according to claim 3, characterized in that: The support legs include lower support rods and upper support rods. The lower support rods are threadedly connected to the upper support rods to adjust the height of the support legs, and the upper ends of the upper support rods are connected to the support frame through ball joints.

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