CN211977819U

CN211977819U - High-resolution miniaturized inductive sensor

Info

Publication number: CN211977819U
Application number: CN202020936837.8U
Authority: CN
Inventors: 刘志艺
Original assignee: Hangzhou Caesium Original Technology Co ltd
Current assignee: Hangzhou Caesium Original Technology Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-11-20
Anticipated expiration: 2030-05-28

Abstract

The utility model discloses a belong to the sensor technology field, specifically a high resolution miniaturized inductance sensor, including main part and shell body, the shell body is located the main part side and passes through the screw connection with the main part, the measuring staff has been placed to main part inner chamber below, fixedly connected with lever seat above the measuring staff, fixedly connected with fixed block above the main part inner chamber, fixedly connected with magnetic spring reed below the fixed block, the first spring leaf briquetting is installed to magnetic spring reed lower extreme, fixedly connected with spring leaf in the middle part of the lever seat, install second spring leaf briquetting above the spring leaf, through the setting of increasing the balancing weight in the rear end of lever seat, the great reduction static force that detects prevents the stylus fish tail work piece of being measured, causes the data distortion, through the setting of the internal stress of high accuracy ceramic measuring staff, has reduced the deformation of metal, and has produced and has changed to sensor stability, the stability and the measurement accuracy of the sensor are improved.

Description

High-resolution miniaturized inductive sensor

Technical Field

The utility model relates to a sensor technical field specifically is a miniaturized inductance sensor of high resolution.

Background

High precision inductive sensors are the heart of precision shape metrology. With the continuous improvement of the processing precision requirement in the manufacturing industry, the surface roughness becomes an important index for judging whether the product is qualified or not. Such as automobiles, airplanes, high-precision machine tools, high-speed rails, etc., require strict surface roughness control of each component. Most of domestic roughness meter manufacturers can not meet the requirement.

At present, the main problems of the domestic roughness sensor are as follows: the force measurement is large, so that the scratch of the measured workpiece is easily caused, and the measured data is distorted; due to limitations in manufacturing processes and structural design, the measurement resolution is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a miniaturized inductance sensor of high resolution to solve the dynamometry that proposes among the above-mentioned background art great, cause easily to survey to the fish tail of the work piece under test, data distortion, measurement resolution ratio low scheduling problem.

In order to achieve the above object, the utility model provides a following technical scheme: a high-resolution miniaturized inductive sensor comprises a main body and an outer shell, wherein the outer shell is positioned on the side face of the main body and is connected with the main body through screws, a measuring rod is placed below an inner cavity of the main body, a lever seat is fixedly connected above the measuring rod, a fixed block is fixedly connected above the inner cavity of the main body, a magnetic spring leaf is fixedly connected below the fixed block, a first spring leaf pressing block is installed at the lower end of the magnetic spring leaf, a spring leaf is fixedly connected to the middle of the lever seat, a second spring leaf pressing block is installed above the spring leaf, magnetic cores are fixedly connected to the left side and the right side above the lever seat, magnetic tanks are fixedly connected to the left side and the right side of the inner cavity of the main body, the magnetic tanks are positioned on the upper side of the magnetic core and vertically correspond to the positions of the magnetic, the measuring rod is characterized in that a measuring needle is installed at the left end of the measuring rod, a guide head penetrates through the lower side of the measuring needle, and an aviation connector is installed on the right side of the main body.

Preferably, the underside of the spindle does not contact the underside wall of the body.

Preferably, the measuring rod is a ceramic measuring rod.

Preferably, the body is adapted to the housing.

Preferably, the magnetic tanks on the left and right sides are located at the same height.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the arrangement of the balancing weight is added at the rear end of the lever seat, so that the static force is greatly reduced, and the data distortion caused by the scratch of a workpiece to be measured by a measuring needle is prevented;

2) through the arrangement of the high-precision ceramic measuring rod, the internal stress deformation of metal is reduced, the stability of the sensor is changed, and the stability and the measuring precision of the sensor are improved;

3) the sensor adopts an inductance principle, so that the resolution and the linearity are better than those of the conventional pressure crystal, and the sensor is not influenced by humidity;

4) through the setting of aviation connector, can be permanent guarantee that the connector does not receive the oxidation of air and cause the trouble, the person of facilitating the use quick replacement sensor more.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the circuit structure of the present invention.

In the figure: the device comprises a guide head 1, a main body 2, an outer shell 3, a second spring piece pressing block 4, a magnetic spring piece 5, a first spring piece pressing block 6, a magnetic tank 7, an aviation connector 8, a balancing weight 9, a magnetic core 10, a lever seat 11, a measuring rod 12, a measuring pin 13, a fixing block 14 and a spring piece 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-2, the present invention provides a technical solution: a high-resolution miniaturized inductive sensor comprises a main body 2 and an outer shell 3, wherein the outer shell 3 is positioned on the side surface of the main body 2 and is connected with the main body 2 through screws, the outer shell 3 is convenient to disassemble and maintain, a measuring rod 12 is placed below an inner cavity of the main body 2, a lever seat 11 is fixedly connected above the measuring rod 12, a fixed block 14 is fixedly connected above the inner cavity of the main body 2, a magnetic spring leaf 5 is fixedly connected below the fixed block 14, a first spring leaf pressing block 6 is installed at the lower end of the magnetic spring leaf 5, a spring leaf 15 is fixedly connected in the middle of the lever seat 11, a second spring leaf pressing block 4 is installed above the spring leaf 15, magnetic cores 10 are fixedly connected on the left side and the right side above the lever seat 11, magnetic tanks 7 are fixedly connected on the left side and the right side of the inner cavity of the main body 2, the magnetic tanks 7 are, the distance between magnetic core 10 and the magnetic tank 7 changes when lever seat 11 inclines, 11 rear end fixedly connected with balancing weights 9 of lever seat, the great reduction of balancing weights 9 quiet dynamometry prevent that the 13 fish tails of survey needle from being surveyed the work piece, cause the data distortion, there is guide head 1 in 2 left sides of main part through the screw connection, survey needle 13 is installed to survey pole 12 left end, guide head 1 is run through to survey needle 13 downside, aviation joint 8 is installed on 2 right sides of main part, and aviation joint 8 can be permanent assurance connector not receive the oxidation of air and cause the trouble, and person's of facilitating the use quick replacement sensor more, the whole size of sensor is less, portable and use.

The underside of the spindle 12 does not contact the underside wall of the body 2.

The measuring rod 12 is a ceramic measuring rod, the measuring rod 12 is high in precision, internal stress deformation of metal is reduced, stability of the sensor is changed, and stability and measuring precision of the sensor are improved.

The main body 2 is matched with the outer shell 3, so that the structure is attractive and the installation is convenient.

The magnetic tanks 7 on the left and right sides are located at the same height.

The working principle is as follows: when the sensor is used for measuring the surface roughness of a workpiece, the sensor is placed on the measured surface of the workpiece, the sensor drives the lever seat 11 to incline through the up-down displacement of the measuring needle 13 on the measured surface of the workpiece, the inductance between the magnetic core 10 and the magnetic tank 7 is changed, the inductance principle is adopted, the resolution ratio and the linearity are better than those of the traditional pressure crystal, the measuring rod 12 is a high-precision ceramic measuring rod, the internal stress deformation of metal is reduced, the stability of the sensor is changed, the stability and the measuring precision of the sensor are improved, the aviation connector 8 can be ensured for a long time that the connector is not oxidized by air to cause faults, and the sensor is more convenient to replace.

Having shown and described the basic principles and principal features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high resolution miniaturized inductive sensor comprising a body (2) and an outer housing (3), characterized in that: the outer shell (3) is located on the side face of the main body (2) and is connected with the main body (2) through screws, a measuring rod (12) is placed below an inner cavity of the main body (2), a lever seat (11) is fixedly connected to the upper portion of the measuring rod (12), a fixed block (14) is fixedly connected to the upper portion of the inner cavity of the main body (2), a magnetic spring leaf (5) is fixedly connected to the lower portion of the fixed block (14), a first spring leaf pressing block (6) is installed at the lower end of the magnetic spring leaf (5), a spring leaf (15) is fixedly connected to the middle portion of the lever seat (11), a second spring leaf pressing block (4) is installed above the spring leaf (15), magnetic cores (10) are fixedly connected to the left side and the right side of the upper portion of the lever seat (11), magnetic tanks (7) are fixedly connected to the left side and the right side of the inner cavity of the main body (2), the magnetic, lever seat (11) rear end fixedly connected with balancing weight (9), there is guide head (1) main part (2) left side through the screw connection, survey needle (13) are installed to survey pole (12) left end, survey needle (13) downside runs through guide head (1), aviation joint (8) are installed on main part (2) right side.

2. A high resolution miniaturized inductive sensor according to claim 1, wherein: the lower side of the measuring rod (12) is not contacted with the lower side wall of the main body (2).

3. A high resolution miniaturized inductive sensor according to claim 1, wherein: the measuring rod (12) is a ceramic measuring rod.

4. A high resolution miniaturized inductive sensor according to claim 1, wherein: the main body (2) is matched with the outer shell (3).

5. A high resolution miniaturized inductive sensor according to claim 1, wherein: the magnetic tanks (7) on the left and right sides are positioned at the same height.