CN2935081Y

CN2935081Y - Double lens triangle positioning depth calibrator

Info

Publication number: CN2935081Y
Application number: CN 200620016940
Authority: CN
Inventors: 徐春云
Original assignee: Individual
Current assignee: Hexagon Manufacturing Intelligence Inc
Priority date: 2006-07-10
Filing date: 2006-07-10
Publication date: 2007-08-15
Anticipated expiration: 2016-07-10

Abstract

The utility model relates to the surveying instrument field, in particular to a two-lens triangular locating depth survey meter. Wherein, a mobile workbench is arranged on a frame of the survey meter; a fixed mount is arranged over the workbench; two lenses designed for measurement are arranged on the fixed mount, one is normal to the workbench and the other is gradient relative to the workbench. Central lines of the two lenses form a junction and the two lenses are connected to a computer through respective image takers. The utility model makes use of two lenses for triangular location and measures difference of depths of different points on an object according to depth of focus of images, measures simply and easily, is quick to use, has high accuracy and is highly practical.

Description

Twin-lens triangle emplacement depth measuring instrument

Technical field:

The utility model relates to the surveying instrument technical field, refers in particular to a kind of twin-lens triangle emplacement depth measuring instrument.

Background technology:

Development along with modern times manufacturing and process technology, the shape and the surface structure of workpiece become increasingly complex, and processing request is also more and more higher, when especially existing workpiece being copied, at first need to obtain workpiece size quite accurately, just seem very important so how to measure the size of workpiece accurately.

In real productive life, people are when measuring more tiny object, normally used measuring appliance is vernier caliper or spiral measuring instrument, its measuring accuracy is generally 0.05mm or 0.01mm, when needs are measured property more accurately, need accurate more measuring appliance, as grating measuring instrument, radionetric survey instrument and utilize the optical measuring instrument etc. of projection imaging.Yet these measuring instruments be the edge contour size of measuring workpieces generally, and for the spatial depth size of workpiece and the flatness on some planes etc., the way of measuring are not a lot of at present, thereby just have influence on the precision of the development and the measurement of measuring technique yet.

Summary of the invention:

The purpose of this utility model is to overcome the defective of prior art, and a kind of twin-lens triangle emplacement depth measuring instrument is provided, and utilizes field depth principle and matching computer to measure, and is simple in structure, and it is convenient to measure, and the precision height.

For achieving the above object, twin-lens triangle emplacement depth measuring instrument described in the utility model, comprise support, and movably worktable is installed on support, set up fixed mount directly over the worktable, two measuring camera lenses are installed on described fixed mount, wherein a camera lens vertical table is provided with, the relative worktable of another camera lens is obliquely installed, and the center line of two camera lenses forms an intersection point, two camera lenses are all seized device by image separately and are connected computer, and image is seized the imaging equipment that device can be CCD or has same function.

Improve as such scheme, described two camera lenses are big multiple enlarging lens.

The contrast prior art, the twin-lens triangle emplacement depth measuring instrument that the utility model provides, be by two camera lenses respectively from different perspectives with the Measuring Object image and seize device by image and convert picture signal to electronic signal and be transported on the computer, and image reduction is presented in the display of computer by the image processing chip in the computer; By the intersection point of two camera lenses as benchmark, i.e. triangle location; At this moment, the traverse measurement object is for o'clock at the image of two camera lens gained relative side-play amount not being arranged in the same degree of depth, can extrapolate the depth difference of difference on the Measuring Object according to side-play amount, promptly realize depth survey, it is convenient, accurate to measure, and increases the practicality of measuring instrument.

The utility model advantage again is simple in structure, assembling, easy to make, and the ingenious field depth principle that utilizes obtains the higher twin-lens triangle emplacement depth measuring instrument of measuring accuracy.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2-1 and 2-2 are the image synoptic diagram of the corresponding different depth point of twin-lens;

Accompanying drawing 3-1 is the striograph of the Vertical camera lens of Fig. 2-1;

Accompanying drawing 3-2 is the striograph of the inclination camera lens of Fig. 2-1;

Accompanying drawing 4-1 is the striograph of the Vertical camera lens of Fig. 2-2;

Accompanying drawing 4-2 is the striograph of the inclination camera lens of Fig. 2-2;

Accompanying drawing 5 is another embodiment synoptic diagram of the utility model;

Accompanying drawing 6-1 is the striograph of a1 position among Fig. 5;

Accompanying drawing 6-2 is the striograph of b1 position among Fig. 5;

Accompanying drawing 6-3 is the striograph of c1 position among Fig. 5.

Embodiment:

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

See shown in the accompanying drawing 1, twin-lens triangle emplacement depth measuring instrument, movably worktable 2 is installed on the support 1 of measuring instrument, set up fixed mount 3 directly over the worktable 2, two

measuring camera lenses

4 and 5 are installed on described fixed mount 3, and wherein camera lens 4 vertical tables 2 are provided with, and another camera lens 5 relative worktable 2 are obliquely installed, and the center line of two

camera lenses

4 and 5 forms an intersection point, and two

camera lenses

4 and 5 are all seized device by image separately and are connected computer.

Two

camera lenses

4 and 5 are big multiple enlarging lens in the present embodiment, Measuring Object is amplified and image, it mainly is to be converted to electronic signal behind the Measuring Object image that image is seized device (the CCD digital mirror is first-class), and signal is delivered to the image processing chip of computer, with image reduction, so that measure by computer.

During use, Fig. 2-1 is the image synoptic diagram of one depth point on the corresponding object of twin-lens, and the center line intersection point when two

camera lenses

4 and 5 drops on Measuring Object 6 end faces just, and at this moment the striograph of camera lens 4 is shown in Fig. 3-1, and the striograph of camera lens 5 is shown in Fig. 3-2, and both image corresponding point overlap.Determine that the depth point shown in the accompanying drawing 2-1 is that reference point is measured another depth point shown in the accompanying drawing 2-2,2 actual depth dimensionses that differ are H; Motionless and the travelling table 2 of camera lens, at this moment this depth point is still on the vertical center line of camera lens 4, but be not to overlap with the center line intersection point of two

camera lenses

4 and 5, thus from Fig. 4-1 and 4-2 figure as can be known, the image corresponding point of camera lens 4 still overlap with reference point, and the image corresponding point relative departure of camera lens 5, deviation distance is L, at this moment measures the L value from computer, and can calculate the H value according to corresponding relation, promptly measure 2 actual depth dimensionses that differ, finish measurement.Using such method can be measured the relative dimensions of other point of Measuring Object equally.

The utility model can be used for the Measuring Object 6 of arbitrary shape, and can measure the spatial depth size of Measuring Object 6 easily, and is applied widely, measures accurately.

Another embodiment synoptic diagram of accompanying drawing 5 the utility model.Among the figure, Measuring Object 6 surfaces exist uneven, and at this moment the traverse measurement object 6, and the camera lens 5 relative measurement objects 6 that then tilt have the upright position to change, as a, b, 3 positions of c; So, variant by the image of camera lens 5 gained for the different concavo-convex position of body surface.The a1 of Measuring Object 6, b1, c1 position among the figure, the image of corresponding image gained is respectively shown in Fig. 6-1,6-2 and 6-3, the imaging point of getting the b1 position is a reference point, be L=0, and have the spacing of L1 and L2, measure the value of L1 and L2 on computers for the imaging point relative datum point at a1 and c1 position, then can extrapolate the fluctuating situation between a1, b1, the c1, thereby obtain the position relation of dependence arc millet cake, it is convenient to measure, and the precision height.

Certainly; the embodiment of the above only is preferred embodiment of the present utility model; be not to limit practical range of the present utility model,, all should be covered by in the protection domain of the present utility model so the equivalence that all shapes according to the utility model, structure and principle are done changes with this.

Claims

1, twin-lens triangle emplacement depth measuring instrument, movably worktable (2) is installed on the support (1) of measuring instrument, set up fixed mount (3) directly over the worktable (2), it is characterized in that: two measuring camera lenses (4) and (5) are installed on described fixed mount (3), wherein a camera lens (4) vertical table (2) is provided with, another camera lens (5) worktable (2) relatively is obliquely installed, and the center line of two camera lenses (4) and (5) forms an intersection point, and described two camera lenses (4) are all seized device by image separately with (5) and are connected computer.

2, twin-lens triangle emplacement depth measuring instrument according to claim 1, it is characterized in that: described two camera lenses (4) and (5) are enlarging lens.