Plane thickness measuring device

Abstract

The utility model discloses a device for measuring the thickness of a plane. The device comprises a measuring sleeve, a positioning sleeve and a handle which are coaxially and sequentially connected along the left-right direction, a measuring area is arranged at the end part of the measuring sleeve, two measuring pieces are symmetrically arranged at the upper and lower positions of the measuring area, and one ends of the two measuring pieces extend into the measuring area; during measurement, the two measuring pieces are in contact fit with a measured surface; two measuring rods are symmetrically arranged in the positioning sleeve up and down, the left ends of the measuring rods extend to the measuring sleeve and are fixedly connected with the other ends of the corresponding measuring bodies respectively, and the right ends of the measuring rods extend to the position of the handle; and an electric measurement part is arranged in the handle and converts the mechanical displacement of the measuring rod into an electric signal. The device belongs to contact measurement, focuses on rapid and accurate detection of the plane thickness size, and is simple in structure, high in measurement precision, simple and reliable in operation, convenient and rapid, and high in detection efficiency.

Description

Technical Field

[0001] The utility model relates to an electronic sensor measuring instrument, in particular to a device for measuring plane thickness. Background Art

[0002] At present, in actual dimensional measurement, the measurement of shaft and hole dimensions accounts for a large proportion. In addition to using traditional measuring tools, such as internal and external diameter micrometers, smooth limit gauges, etc., the measurement of these parts has been standardized and routinely carried out at the earliest, such as using pneumatic or electronic plug gauges, with corresponding pneumatic measuring instruments or electronic columns to display the measurement results. This technology is relatively mature, the measuring instrument has a short production cycle and a high reliability rate. However, in actual measurement, there are also many plane thicknesses that need to be measured. Generally, they are measured by vernier calipers or micrometers, which have low measurement efficiency and low accuracy, and are prone to misjudgment.

[0003] In this case, a reliable, fast and efficient measuring instrument is needed to achieve accurate measurement of plane thickness. Utility Model Content

[0004] In order to solve the problems in the prior art, the utility model provides a device for measuring the thickness of a plane.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A device for measuring plane thickness, comprising a measuring sleeve, a positioning sleeve and a handle which are coaxially connected in sequence along a left-right direction;

[0007] A measuring area is provided at the end of the measuring sleeve, and two measuring probes are symmetrically provided at the upper and lower positions of the measuring area, and one end of the two measuring probes extends into the measuring area; during measurement, the two measuring probes are in contact with the measured surface;

[0008] Two measuring rods are symmetrically arranged in the positioning sleeve, the left end of the measuring rod extends to the measuring sleeve and is fixedly connected to the other end of the corresponding measuring element, and the right end of the measuring rod extends to the handle position;

[0009] An electrical measuring unit is provided in the handle, and the electrical measuring unit converts the mechanical displacement of the measuring rod into an electrical signal.

[0010] Furthermore, the electrical measurement unit includes two levers symmetrically arranged in the handle, both levers extending in the left-right direction; a tension spring is connected between the two levers;

[0011] The right ends of the two levers are fixed with magnetic coils, and the two magnetic coils correspond to each other up and down;

[0012] The left ends of the two levers are connected to two measuring rods respectively, and the connecting parts of the measuring rods and the levers are provided with elastic bodies, which are connected to the handles through elastic body mounting seats, and the measuring rods, levers and elastic bodies form an elastic lever structure.

[0013] Furthermore, an inward movement limiting mechanism is arranged between the two levers, and the inward movement limiting mechanism includes limit pins respectively arranged on the two levers and a limit block arranged between the two levers, the limit block is fixedly connected to the handle, the limit pin passes through the corresponding lever and points to the limit block, and a distance is retained between the limit pin and the limit block.

[0014] Furthermore, an outward movement limiting mechanism is arranged between the two levers, and the outward movement limiting mechanism includes a connecting bolt that passes through the two levers in sequence, the screw portion of the connecting bolt is threadedly connected to one of the levers, the head of the connecting bolt is located on the outside of the other lever, and the smooth rod portion of the connecting bolt is slidably matched with the lever.

[0015] Furthermore, the measuring area is a measuring groove recessed in the end of the measuring sleeve.

[0016] Furthermore, the measuring groove is a rectangular groove and penetrates the measuring sleeve from front to back.

[0017] Beneficial effects of the utility model:

[0018] The measurement of the utility model belongs to contact measurement, focusing on the rapid and accurate detection of the plane thickness size. The utility model has a novel design, simple structure, high measurement accuracy, simple and reliable operation, convenient and fast, high detection efficiency, can be placed in the workshop for batch detection, and has strong environmental adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the main viewing direction of the utility model;

[0020] Figure 2 It is a left view of the utility model;

[0021] Figure 3 It is a top view of the utility model.

[0022] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] like Figures 1 to 3 As shown, this embodiment provides a device for measuring the thickness of a plane, comprising a measuring sleeve 1, a positioning sleeve 2 and a handle 3 which are coaxially connected in sequence along the left-right direction.

[0025] The end of the measuring sleeve 1 is provided with a concave measuring groove 14, which is a rectangular groove and runs through the front and back. Two measuring probes 4 extending in the upper and lower directions are symmetrically provided at the upper and lower positions of the measuring groove 14, and one end of the two measuring probes 4 extends into the measuring groove 14. When measuring, the detected object is placed in the measuring groove 14, and the two measuring probes 4 are in contact with the measured surface of the detected object.

[0026] Two measuring rods 5 are symmetrically arranged in the positioning sleeve 2 , the left ends of the measuring rods 5 extend to the measuring sleeve 1 and are fixedly connected to the other ends of the corresponding measuring elements 4 , and the right ends of the measuring rods 5 extend to the position of the handle 3 .

[0027] An electrical measuring unit is provided inside the handle 3, and the electrical measuring unit converts the mechanical displacement of the measuring rod 5 into an electrical signal.

[0028] Specifically, the electrical measurement unit includes two levers 6 symmetrically arranged in the handle, and the two levers 6 extend in the left-right direction; a tension spring 15 is connected between the two levers 6. The right ends of the two levers 6 are fixed with magnetic coils 7, and the two magnetic coils 7 correspond to each other. The left ends of the two levers 6 are respectively connected to two measuring rods 5, and the connecting parts of the measuring rods 5 and the levers 6 are provided with elastic bodies 8, which are connected to the handle 3 through an elastic body mounting seat 9, and the measuring rods 5, the levers 6 and the elastic body 8 form an elastic lever structure.

[0029] During measurement, the probe contacts the measured surface, causing the measuring rod 3 to contract and expand, which in turn causes the elastic body 5 to elastically deform. The elastic body's action on the fulcrum will cause the lever 6 to further contract and expand, which in turn causes the displacement of the magnetic core coil 7, thereby converting the mechanical displacement into an electrical signal.

[0030] In order to prevent the lever 6 from shrinking too much inward, an inward movement limiting mechanism is arranged between the two levers 6. The inward movement limiting mechanism includes a limit pin 10 respectively arranged on the two levers and a limit block 11 arranged between the two levers. The limit block 11 is fixedly connected to the handle. The limit pin 10 passes through the corresponding lever 6 and points to the limit block 11, and a distance is retained between the limit pin 10 and the limit block 11.

[0031] In order to prevent the lever 6 from expanding outward too much, an outward movement limiting mechanism is arranged between the two levers, and the outward movement limiting mechanism includes a connecting bolt 12 that passes through the two levers 6 in sequence, the screw portion of the connecting bolt 12 is threadedly connected to one of the levers, the head of the connecting bolt 12 is located on the outside of the other lever, and the bare rod portion of the connecting bolt 12 is slidably matched with the lever.

[0032] Through the combined effect of the above-mentioned inward movement limiting mechanism and outward movement limiting mechanism, the accuracy and service life of the magnetic core coil 7 can be further guaranteed.

[0033] The working principle of the utility model is as follows:

[0034] When the utility model is used, it needs to be calibrated by the standard part 13. First, the measuring device is placed on the lower limit standard part, and the electronic column or the electric box is set to display the lower limit standard value, and then the measuring device is placed on the upper limit standard part, and the calibration magnification is made so that the display value of the electronic column or the electric box is consistent with the verification value of the upper limit standard part. At this time, the calibration is completed and measurement can be performed.

[0035] When measuring, the measuring device should be placed flat or vertically in the measuring position so that the measuring probes on both sides are in contact with the measured surface. The electronic column or electrical box displays the measurement results, and the tolerance zone can be set according to user requirements. Parts that exceed the tolerance will display a red cursor warning.

[0036] The measuring method of the utility model belongs to contact measurement, focuses on the rapid and accurate detection of the plane thickness dimension, and obtains the measuring result by comparing with the standard part (the dimension transfer benchmark, equivalent to the block gauge).

[0037] The utility model has novel design, simple structure and high measurement accuracy (measurement repeatability 0.001mm). The measuring and positioning part is made of GCr15 bearing steel with heat treatment hardness of 55-60HRC, which meets high wear resistance requirements. The operation is simple and reliable, convenient and fast, with high detection efficiency. It can be placed in the workshop for batch detection and has strong environmental adaptability. It can be widely used in domestic automobile, motorcycle and air conditioning industries, providing reliable detection guarantee for these industries.

[0038] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

[0039] If the words "first", "second" and so on are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying the description. Unless otherwise stated, the above words have no special meaning.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A device for measuring plane thickness, characterized in that: It includes a measuring sleeve, a positioning sleeve and a handle which are coaxially connected in sequence along the left and right directions; A measuring area is provided at the end of the measuring sleeve, and two measuring probes are symmetrically provided at the upper and lower positions of the measuring area, and one end of the two measuring probes extends into the measuring area; during measurement, the two measuring probes are in contact with the measured surface; Two measuring rods are symmetrically arranged in the positioning sleeve, the left end of the measuring rod extends to the measuring sleeve and is fixedly connected to the other end of the corresponding measuring element, and the right end of the measuring rod extends to the handle position; An electrical measuring unit is provided in the handle, and the electrical measuring unit converts the mechanical displacement of the measuring rod into an electrical signal.

2. The device for measuring plane thickness according to claim 1, characterized in that: The electrical measurement unit includes two levers symmetrically arranged in the handle, both levers extending in the left-right direction; a tension spring is connected between the two levers; The right ends of the two levers are fixed with magnetic coils, and the two magnetic coils correspond to each other up and down; The left ends of the two levers are connected to two measuring rods respectively, and the connecting parts of the measuring rods and the levers are provided with elastic bodies, which are connected to the handles through elastic body mounting seats, and the measuring rods, levers and elastic bodies form an elastic lever structure.

3. The device for measuring plane thickness according to claim 2, characterized in that: An inward movement limiting mechanism is arranged between the two levers, and the inward movement limiting mechanism includes limiting pins respectively arranged on the two levers and a limiting block arranged between the two levers. The limiting block is fixedly connected to the handle, the limiting pin passes through the corresponding lever and points to the limiting block, and a distance is retained between the limiting pin and the limiting block.

4. The device for measuring plane thickness according to claim 2, characterized in that: An outward movement limiting mechanism is arranged between the two levers, and the outward movement limiting mechanism comprises a connecting bolt which passes through the two levers in sequence, the screw portion of the connecting bolt is threadedly connected to one of the levers, the head of the connecting bolt is located on the outside of the other lever, and the smooth rod portion of the connecting bolt is slidably matched with the lever.

5. The device for measuring plane thickness according to claim 1, characterized in that: The measuring area is a measuring groove recessed in the end of the measuring sleeve.

6. The device for measuring plane thickness according to claim 5, characterized in that: The measuring groove is a rectangular groove and penetrates the measuring sleeve from front to back.

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