CN2550718Y

CN2550718Y - Thickness measurer

Info

Publication number: CN2550718Y
Application number: CN 02267347
Authority: CN
Inventors: 于效军; 王淑华; 韩会涛
Original assignee: 于效军
Priority date: 2002-06-03
Filing date: 2002-06-03
Publication date: 2003-05-14
Anticipated expiration: 2012-06-03

Abstract

The utility model discloses a thickness measuring instrument, comprising a pair of lasers 1, a pair of objective lenses 2, a pair of CCD receivers 3, a C-shaped measuring frame 4 and a motor 5. The utility model is characterized in that the lasers 1 are arranged at the upper part and the lower part of the C-shaped measuring frame 4 respectively, and the objective lenses 2 are also arranged at the upper part and the lower part of the C-shaped measuring frame 4 respectively; the objective lenses 2 are corresponding to the lasers 1; laser transmitted by the lasers 1 is refracted to the objective lenses 2 by the object to be detected; the CCD receivers 3 is arranged at the back of the objective lenses 2, the laser can be refracted to the CCD receivers 3 through the objective lenses 2; a plurality of wheels 7 are arranged under the C-shaped measuring frame 4; the motor 5 can drive the C-shaped measuring frame 4 to move. The utility model has the advantages of convenient operation, wide measurement range and precise thickness measurement.

Description

A kind of Thickness measuring instrument

The utility model relates to a kind of measuring thickness device of sheet material, is mainly used in the thickness on-line measurement of sheet material or output strip line.

At present, the measuring thickness device of enterprise's widespread usage generally is contact or ray type thicknessmeter.The former adopts the double-contact measuring method; during measurement because contact is subjected to the vibration influence bob; measuring accuracy is lower; the fatal shortcoming of another one is that double-contact scratches to some extent to plate surface; influence board quality: the ray type thicknessmeter adopts α or β ray that thickness is tested; although solved thickness measuring precision and plate surface quality, ray causes serious injury to people's cognition, and the field staff must wear the protection clothes and just can operate.In addition, existing various measuring thickness devices are generally only tested straight line, can not the thickness of accurate response sheet material on lateral extent.

The purpose of this utility model is to provide a kind of overcome above-mentioned shortcoming, easy to operate, the accurate Thickness measuring instrument of thickness measuring.

The utility model is achieved in that a kind of Thickness measuring instrument, comprise a pair of laser instrument, a pair of object lens, a pair of CCD receptacle, C type measurement bay and motor, laser instrument is separately positioned on the upper and lower of C type measurement bay, object lens also are separately positioned on the upper and lower of C type measurement bay, object lens and laser instrument are corresponding in twos, the laser that laser instrument is launched is after the measured object refraction, refraction is on object lens, the CCD receptacle is arranged on the object lens back, refract light can arrive the CCD receptacle through object lens, wheel is equipped with in C type measurement bay bottom, and motor can drive C type measurement bay and move.

The utility model has the advantages that:

1, can not cause scuffing to plate surface.The measuring principle of this device is to utilize the variation that refraction produced of laser on sheet material to calculate sheet metal thickness, can not cause any damage to plate surface during measurement.

2, measuring accuracy height.The change in displacement of utilizing laser refraction to produce is calculated sheet metal thickness, the measuring accuracy height.

3, measurement range is big.C type measurement bay can be moved in whole sheet material by motor-driven, does the integrated testability of S shape, has improved the drawback that old equipment is only tested straight line, can reflect more really that whole sheet material walks crosswise the thickness in the scope.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Accompanying drawing is an application state synoptic diagram of the present utility model.

As shown in the figure, the corresponding respectively upper and lower that is installed in C type measurement bay 4 of laser instrument 1, object lens 2 and CCD receptacle 3, its corresponding relation is, the laser particle that laser instrument 1 sends arrives object lens 2 and CCD receptacle 3 after the measured object refraction, C type measurement bay 4 bottoms are equipped with wheel 7, on the C type measurement bay 4 motor 5 is installed also, drives by motor 5, C type measurement bay 4 can move.CCD receptacle 3 is connected with signal record analytical equipment 6, and signal record analytical equipment 6 has storage and analytic function, and this device 6 can be stored the signal data that receives, and analyzes the situation and the reason of variation in thickness automatically.

The measuring principle of this device is as follows: the laser particle that laser instrument 1 sends is radiated at plate surface, this time point refraction, and generation displacement, luminous point is through being refracted to object lens 2, arrive CCD receptacle 3 then, at CCD receptacle 3 spot displacement is converted into electric signal with the proportional relation of displacement, this conversion of signals is that digital quantity is after Computer Processing can obtain the displacement of luminous point.The displacement of luminous point and laser instrument 1 are to the proportional relation of distance of refraction point, by calculating the distance that can obtain refraction point.Setting C type measurement bay 4 internal orifice upper surfaces are b to the distance of refraction point, and lower surface is a to the distance of refraction point, and the distance between the internal orifice upper and lower surface is c, and the thickness of sheet material is h, then h=c-a-b.

Claims

1, a kind of Thickness measuring instrument, it is characterized in that: comprise a pair of laser instrument (1), a pair of object lens (2), a pair of CCD receptacle (3), C type measurement bay (4) and motor (5), laser instrument (1) is separately positioned on the upper and lower of C type measurement bay (4), object lens (2) also are separately positioned on the upper and lower of C type measurement bay (4), object lens (2) and laser instrument (1) are corresponding in twos, the laser that laser instrument (1) is launched is after the measured object refraction, refraction is on object lens (2), CCD receptacle (3) is arranged on object lens (2) back, refract light can arrive CCD receptacle (3) through object lens (2), wheel (7) is equipped with in C type measurement bay (4) bottom, and motor (5) can drive C type measurement bay (4) and move.

2, Thickness measuring instrument according to claim 1 is characterized in that: this thicknessmeter also comprises signal record analytical equipment (6), and signal record analytical equipment (6) is connected with CCD receptacle (3).