High-precision thickness gauge

Abstract

The utility model relates to the technical field of thickness gauges, in particular to a high-precision thickness gauge, which is characterized in that a base is arranged for placing a material to be subjected to thickness measurement, a thickness measuring head and a hold-down head are respectively driven by a first lifting assembly and a second lifting assembly to ascend and descend, plate materials are flattened, and high-precision thickness measurement is realized. The instrument box performs digital display of thickness measurement data, a circle of adsorption cotton surrounds the outside of the thickness measurement head, and the adsorption cotton wipes impurity particles on the surface of a material, so that dust is prevented from being adhered to the thickness measurement head in the rolling process; according to the utility model, the supporting structure and the adjusting structure are arranged, so that the technical problems of high-precision thickness measurement and accuracy of multi-position measurement of plate materials are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of thickness gauges, in particular to a high-precision thickness gauge. Background Art

[0002] A thickness gauge is an instrument used to measure the thickness of a material. In various industrial and manufacturing fields, thickness gauges are widely used to measure the thickness of various materials such as metals, ceramics, and glass. Small handheld thickness gauges are portable and easy to use thickness measurement devices suitable for various industrial and commercial applications. Existing thickness gauges cannot perform high-precision thickness measurement on harder plate materials when used in a portable manner.

[0003] The Chinese utility model patent with the name of "A high-precision thickness gauge probe" and the publication number of CN217465752U has been published. The patent includes a probe and a bracket. The bracket is provided with an air jet assembly, which has a buffer mechanism and a limit mechanism. The air jet assembly includes an air cylinder fixedly connected to the bracket. The piston is slidably sleeved in the air cylinder, and the piston is fixedly connected to a threaded rod. The outer ring of the threaded rod is connected to a solenoid by a thread, and the bottom of the solenoid is rotatably connected to the top of the bracket. The utility model can perform air jet cleaning on the surface of the object to be measured and the surface of the probe, so as to avoid the micro-particles adhering to the surface of the object to be measured and the surface of the probe from affecting the measurement accuracy; it can avoid the probe from directly and rigidly contacting the object to be measured, and extend the service life of the probe; at the same time, it is easy to replace the probe, reducing the difficulty of disassembly, but the area of ​​the side head is large, and the applicability to the type of object to be measured is not high, and when measuring multiple positions of the same object, it cannot be guaranteed that the object is placed flat on the device every time, and the measurement accuracy cannot be guaranteed. Utility Model Content

[0004] The purpose of the present application is to provide a high-precision thickness gauge, which solves the technical problems of high-precision thickness measurement and accuracy of multi-position measurement of plate materials.

[0005] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0006] The utility model provides a high-precision thickness gauge, which is characterized by comprising a base, an instrument box, a thickness measuring mechanism and a pressing mechanism; the base is provided with the instrument box, and the thickness measuring mechanism and the pressing mechanism are installed on the instrument box.

[0007] Preferably, the thickness measuring mechanism includes a first lifting assembly displaced in the vertical direction, a thickness measuring head connected to the bottom of the first lifting assembly, and a displacement monitoring assembly; the displacement monitoring assembly monitors the displacement distance of the thickness measuring head, and when measuring the thickness, the thickness measuring head is located on the base at an initial position; the thickness measuring head is located on the surface of the material to be measured at the thickness measuring position.

[0008] Preferably, the holding mechanism comprises a second lifting assembly displaced in the vertical direction and a holding head connected to the bottom of the second lifting assembly; when measuring the thickness, the holding head flattens the material to be measured.

[0009] Preferably, the thickness measuring head and the pressing head are rotatably connected to the bottom of the first lifting assembly and the bottom of the second lifting assembly respectively, and both the thickness measuring head and the pressing head are spherical roller structures.

[0010] Preferably, the instrument box includes an instrument box body and a second clamping block detachably connected to the instrument box body, and the second lifting assembly is installed on the instrument box through the second clamping block.

[0011] According to the aforementioned high-precision thickness gauge, the feature is that the base includes a base body box and a first clamping block detachably connected to the base body, and the first clamping block is located directly below the pressing head.

[0012] Preferably, a ring-shaped adsorption cotton pad is also provided at the bottom of the first lifting component. The adsorption cotton pad is located at the periphery of the thickness measuring head, and the bottom height of the adsorption cotton pad is lower than the bottom height of the thickness measuring head.

[0013] Preferably, the first lifting assembly includes a thickness measuring column, a second connecting cylinder, and a driving assembly;

[0014] Preferably, the thickness measuring column vertically passes through the instrument box and can move up and down relative to the instrument box. The bottom of the thickness measuring column is threadedly connected to a second connecting cylinder, and a thickness measuring head is rotatably provided in the second connecting cylinder.

[0015] Preferably, the driving assembly includes a lever-shaped paddle, one end of which abuts against the thickness measuring column during the process of tilting upward, thereby driving the thickness measuring column to move upward, and the thickness measuring column moves downward under the action of gravity.

[0016] Preferably, the second upgrade assembly includes a threaded rod vertically threadedly connected to the instrument box.

[0017] Preferably, the second upgrade component also includes a sliding rod connected to the threaded rod through a linkage, the sliding rod is vertically movably arranged on the instrument box, the sliding rod moves up and down following the threaded rod, and a pressing head is provided at the bottom of the sliding rod and the threaded rod.

[0018] Preferably, the base is provided with a first cushion block and a second cushion block which are respectively located directly below the thickness measuring head and the holding head.

[0019] Preferably, a high-precision thickness gauge further includes an adjustment structure, which includes a second connecting plate fixed to the instrument box 2 and a threaded shaft that drives the instrument box to move horizontally by threaded rotation.

[0020] The technical solution of the present application has at least the following advantages and beneficial effects:

[0021] The flattening of the thickness measuring structure and the holding structure ensures high-precision thickness measurement of hard plate materials; the fast loading and unloading holding structure increases the high applicability of various types of measured objects; the rolling thickness measuring head quickly changes its position to measure the thickness of multiple points on the surface of the same plate object, and the adsorption cotton can wipe the surface of the material during the movement of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the pressing structure.

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the pressing structure.

[0025] Figure 4 This is a schematic diagram of the thickness measurement structure at one angle.

[0026] Figure 5 This is a schematic diagram of the thickness measurement structure from another angle.

[0027] In the figure: 1-base; 2-instrument box; 3-handle; 4-digital display dial; 5-holding structure; 6-thickness measuring structure; 7-adjusting structure; 501-first clamping block; 502-first cushion block; 503-second clamping block; 504-threaded rod; 505-torsion plate; 506-first connecting tube; 507-holding head; 508-first connecting plate; 509-sliding rod; 601-second cushion block; 602-thickness measuring column; 603-second connecting tube; 604-thickness measuring head; 605-support plate; 606-absorption cotton; 607-support block; 608-paddle; 609-pressure head; 701-slide plate; 702-second connecting plate; 703-threaded shaft; 704-adjusting knob. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. If the terms "center", "upper", "lower", "inner", "outer", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the figure, or the orientation or position relationship in which the product of the application is usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. It should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Example

[0031] A high-precision thickness gauge comprises a base 1, an instrument box 2, a thickness measuring structure 6, and a pressure measuring structure 5. The base is provided with an instrument box 2, on which the thickness measuring structure 6 and the pressure holding structure 5 are installed. The thickness measuring structure comprises a first lifting assembly and a thickness measuring head 604 connected to the first lifting assembly, and the pressure holding structure comprises a second lifting assembly and a pressure holding head 507 arranged on the second lifting assembly.

[0032] The base 1 is provided to place the material to be measured, and the instrument box is provided to support the installation of the first lifting assembly and the second lifting assembly. The first lifting assembly and the second lifting assembly respectively drive the thickness measuring head 604 and the holding head 507 to move up and down, thereby completing the contact and separation with the material to be measured below the thickness measuring head 604 and the holding head 507. The thickness of the material to be measured is tested by the thickness measuring head 604, and the holding head 507 is provided to flatten the material to be measured. Since the material is flattened, the test of the thickness measuring head is more accurate.

[0033] Furthermore, the first lifting assembly includes a thickness measuring column 602, a second connecting tube 603, a thickness measuring head 604, and a driving assembly.

[0034] The thickness measuring column 602 vertically passes through the instrument box 2 and can move up and down relative to the instrument box 2. The bottom of the thickness measuring column 602 is threadedly connected to the second connecting cylinder 603. A thickness measuring head 604 is rotatably provided in the second connecting cylinder 603. The thickness measuring head 604 is a spherical roller contact. The bottom of the roller contact contacts with the material to be measured. The driving component is connected to the thickness measuring column 602 to drive the thickness measuring column 602 to move up and down.

[0035] Furthermore, the second lifting assembly includes a clamping block 503 , a threaded rod 504 , a torsion plate 505 , a first connecting tube 506 , and a pressing head 507 .

[0036] The threaded rod 504 vertically passes through the block 503. The threaded rod 504 can be rotated relative to the block 503 to move up and down. The top of the threaded rod 504 is fixedly connected with a torsion plate 505. Manually twisting the torsion plate 505 can drive the threaded rod 504 to rotate, so that the threaded rod 504 moves in the block 503, and the height of the pressure holding head 507 relative to the base 1 is adjusted. The bottom of the threaded rod 504 is threadedly connected with a first connecting tube 506. The pressure holding head 507 is rotatably arranged in the first connecting tube 506. The pressure holding head 507 is a spherical roller, and the bottom of the roller contacts the material to be measured. Pull the material to be measured, the pressure holding head 507 and the thickness measuring head 604 roll on the surface of the material, and the thickness measuring head 604 is moved to another position on the surface of the material to measure the thickness.

[0037] In some embodiments, the driving assembly included in the first lifting assembly includes a support block 607 , a paddle 608 , and a pressure head 609 .

[0038] The support block 607 is arranged at the top of the instrument box 2. The support block 607 supports the paddle 608 and enables it to rotate. An arc-shaped notch is arranged at the right end of the paddle 608. The notch is located above the thickness measuring column 602 and cooperates with the top slot of the thickness measuring column. A pressure head 609 is connected to the top of the thickness measuring column 602. When the left end of the paddle 608 is pressed manually, the thickness measuring column 602 at the right end of the paddle 608 is driven to move up and down in the instrument box 2 through the lever structure principle of the support block 607.

[0039] Furthermore, a micrometer and a capacitive displacement sensor are provided inside the instrument box 2. Before thickness measurement, the thickness measuring head 604 contacts the second pad 601, and the micrometer inside the instrument box 2 is at the zero position. When the driving component drives the thickness measuring column 602 to move up and down, the thickness measuring column 402 drives the capacitive displacement sensor to move, and the capacitance changes. The generated displacement is calculated and converted to the micrometer through digital-to-analog conversion. The micrometer transmits the displacement data to the digital display dial 4 provided outside the instrument box 2 so that personnel can observe the thickness measurement data.

[0040] In some embodiments, the pressing mechanism 5 includes a first clamping block 501 , a first cushion block 502 , a second clamping block 503 , a linkage member, and a sliding rod 509 .

[0041] The first clamping block 501 is provided with a protruding end of a special shape, and both sides of the base 1 are provided with a slot that can match the protruding end of the first clamping block 501, so that it can be completely inserted into the slot of the base 1. When measuring the thickness of special-shaped materials, the holding structure 5 cannot be held, and at this time, the first clamping block 501 can be quickly removed from the slot of the base 1, which is convenient for installing the thickness measuring structure 6 for thickness measurement. The first clamping block 501 is fixedly provided with a first cushion block 502, and the horizontal height of the first cushion block 502 is consistent with the horizontal height of the second cushion block 601 after being installed on the base 1. The second clamping block 503 is also provided with a protruding end of a special shape, and the left and right top ends of the instrument box 2 are provided with a slot that matches the protruding end of the second clamping block 502, which has the same function as the slot of the base 1, and is convenient for disassembling the holding structure 5.

[0042] Furthermore, the linkage member includes a first connecting plate 508, which connects the threaded rod 504 and the slide rod 509. The first connecting plate 508 is provided with circular through holes at both ends, and the centers of the two through holes are coaxial with the axes of the threaded rod 504 and the slide rod 509, respectively. The threaded rod 504 and the slide rod 509 are provided with pressure plates at the top to limit the up and down movement of the first connecting plate 508. When the threaded rod 504 moves up and down through the thread, the slide rod 509 will be driven to slide up and down to the same height through the linkage member, and the slide rod slides in the circular hole of the second block 503.

[0043] In some embodiments, the thickness measuring structure includes a second connecting tube 603 , a support column 605 , and adsorption cotton 606 .

[0044] Several support columns 605 are fixedly installed on the outer circular plate of the second connecting tube 603. The support columns 605 are evenly arranged on the outer circular plate of the second connecting tube 603. The bottom of the support column 605 is fixedly adhered with an adsorption cotton 606. The adsorption cotton 606 is in the shape of a ring. The ring surface is connected and fixed to the bottom of several support columns 605. The bottom surface of the ring of the adsorption cotton 606 slightly exceeds the bottom of the thickness measuring head 604 by 1-3 mm. When the bottom of the thickness measuring head 604 contacts the material to be measured, the adsorption cotton 606 will retract after being attached to the surface of the material due to its soft and porous material, ensuring a closer contact with the surface of the material. When pulling the material to measure the thickness at different positions, the adsorption cotton 606 wipes the impurity particles on the surface of the material to ensure that dust does not adhere to the thickness measuring head 604 during the rolling process, which affects the high-precision thickness measurement of the material to be measured.

[0045] In some embodiments, the adjustment structure 7 includes a slide plate 701 , a second connecting plate 702 , a threaded shaft 703 , and an adjustment knob 704 .

[0046] A slide plate 701 is provided in the middle of the connection position where the base 1 and the instrument box 2 are fitted, and the slide plate 701 is fixedly installed on the base, and the instrument box 2 can slide in the slide groove of the slide plate 701. The second connecting plate 702 is L-shaped, and one end of the L-shaped second connecting plate 702 is fixedly connected to the outer wall of the rear end of the instrument box 2. A circular hole is provided at the other end of the L-shaped second connecting plate 702, and a threaded shaft 703 is rotatably installed in the circular hole of the second connecting plate 702. The threaded shaft 703 is limited by setting a limit groove. The threaded shaft 703 moves in the circular hole of the second connecting plate 702. The front end of the threaded shaft 703 is provided with a thread, which is threadedly connected to the threaded hole of the slide plate 701. The end of the threaded shaft 703 is fixedly installed with an adjusting knob 704. By twisting the adjusting knob 704, the threaded shaft 703 can realize forward and backward movement through the thread rotation, and the front and rear position of the instrument box 2 is adjusted through the second connecting plate 702, which is used to measure the parallel position of plate-type materials to be tested or the different positions of the thickness measurement position of special-shaped materials to be tested.

[0047] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution of the present invention, and the scope of the present invention is defined by the attached claims.

Claims

1. A high-precision thickness gauge, characterized in that: The apparatus comprises a base (1), an instrument box (2), a thickness measuring mechanism (6), and a pressing mechanism (5); the base is provided with an instrument box (2), and the instrument box (2) is provided with a thickness measuring mechanism (6) and a pressing mechanism (5); The thickness measuring mechanism (6) comprises a first lifting assembly displaced in the vertical direction, a thickness measuring head (604) connected to the bottom of the first lifting assembly, and a displacement monitoring assembly; the displacement monitoring assembly monitors the displacement distance of the thickness measuring head (604); when measuring thickness, the thickness measuring head (604) is located on the base (1) at an initial position; the thickness measuring head (604) is located on the surface of the material to be measured at the thickness measuring position; The holding mechanism (5) comprises a second lifting assembly displaced in the vertical direction and a holding head (507) connected to the bottom of the second lifting assembly; when measuring the thickness, the holding head (507) flattens the material to be measured.

2. A high-precision thickness gauge according to claim 1, characterized in that: The thickness measuring head (604) and the pressing head (507) are rotatably connected to the bottom of the first lifting assembly and the bottom of the second lifting assembly respectively. The thickness measuring head (604) and the pressing head (507) are both spherical roller structures.

3. A high-precision thickness gauge according to claim 1, characterized in that: The instrument box (2) comprises an instrument box main body and a second clamping block (503) detachably connected to the instrument box main body, and the second lifting assembly is mounted on the instrument box via the second clamping block (503).

4. A high-precision thickness gauge according to claim 1, characterized in that: The base (1) comprises a base body box and a first clamping block (501) detachably connected to the base body, and the first clamping block (501) is located directly below the pressing head (507).

5. A high-precision thickness gauge according to claim 1, characterized in that: An annular adsorption cotton pad (606) is also provided at the bottom of the first lifting assembly. The adsorption cotton pad (606) is located at the periphery of the thickness measuring head (604). The bottom height of the adsorption cotton pad (606) is lower than the bottom height of the thickness measuring head (604).

6. A high-precision thickness gauge according to claim 1, characterized in that: The first lifting assembly comprises a thickness measuring column (602), a second connecting cylinder (603), and a driving assembly; The thickness measuring column (602) vertically passes through the instrument box (2) and can move up and down relative to the instrument box (2); a second connecting tube (603) is threadedly connected to the bottom of the thickness measuring column (602); a thickness measuring head (604) is rotatably arranged in the second connecting tube (603); The driving assembly comprises a lever-shaped paddle (608), one end of which abuts against the thickness measuring column (602) during the process of tilting upward, thereby driving the thickness measuring column (602) to move upward, and the thickness measuring column (602) moves downward under the action of gravity.

7. A high-precision thickness gauge according to claim 1, characterized in that: The second upgrade assembly includes a threaded rod (504) vertically threadedly connected to the instrument box (2).

8. A high-precision thickness gauge according to claim 7, characterized in that: The second upgrade component also includes a slide bar (509) connected to the threaded rod through a linkage member. The slide bar (509) is vertically movably arranged on the instrument box (2). The slide bar (509) moves up and down following the threaded rod (504). The bottoms of the slide bar (509) and the threaded rod (504) are both provided with a pressing head (507).

9. A high-precision thickness gauge according to claim 4, characterized in that: The base (1) is provided with a first cushion block (502) and a second cushion block (601) which are respectively located directly below the thickness measuring head (604) and the pressing head (507).

10. A high-precision thickness gauge according to claim 1, characterized in that: The adjusting structure (7) comprises a second connecting plate (702) fixed to the instrument box (2) and a threaded shaft (703) which drives the instrument box (2) to move horizontally by threaded rotation.

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