CN205245992U

CN205245992U - Image measuring apparatus

Info

Publication number: CN205245992U
Application number: CN201521053693.7U
Authority: CN
Inventors: 林政仪
Original assignee: Suzhou Jingchang Photoelectric Co Ltd
Current assignee: Suzhou Jingchang Photoelectric Co Ltd
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2016-05-18
Anticipated expiration: 2025-12-16

Abstract

The utility model discloses an image measuring apparatus, include mobilizable workstation, be located the CCD camera lens of workstation top and the light source that disposes along with the CCD camera lens, the workstation is equipped with the gearshift of X axle direction and the gearshift of Y axle direction to be equipped with the glass board that is used for bearing the work piece, the upper surface of glass board is higher than the workstation upper surface, the workstation is located the integration of CCD camera lens below and is equipped with at least one reflection of light face towards the glass board, reflection of light face is 45 degrees with the contained angle of horizontal plane. Compared with the prior art, this technical scheme has solved the problem that there is the shade work piece side, and the picture that the staff can directly acquire work piece top surface and side carries out the picture shadow and compares to can make the work piece place along the coordinate axle, improve work piece measuring accuracy.

Description

A kind of image measurer

Technical field

The utility model relates to a kind of measuring instrument of high precision, and more particularly, it relates to a kind of image measurer.

Background technology

Image measurer is to be based upon on the basis of CCD digital image, and the powerful software capability that relies on computer screen measuring technique and space geometry computing produces. Calculate the displacement numerical value that function reads optical ruler fast, by being based upon the software module computing on space geometry basis, moment draws desired result; And on screen, produce figure, and carry out the contrast of figure shadow for operator, thus the deviation that resolved measurement the possibility of result exists intuitively. So when test, obtaining of workpiece image plays vital effect to whole test process.

CCD (full name Charge-coupledDevice), also can be called ccd image sensor. CCD is a kind of semiconductor devices, and it can respond to light, and optical image is converted into data signal. Therefore, CCD is often applied to measurement, and its measuring method is comparatively simple, and certainty of measurement is high.

When measurement, normally workpiece is placed on workbench, CCD camera lens is positioned at directly over workpiece, the being tested surface of workpiece is upwards just measured CCD camera lens, therefore, current image measurer is mainly used in the top end face of put workpiece to measure, but, along with the raising that workpiece calibration is required, need to measure multiple faces, this just requires light can be irradiated to each of workpiece, and in prior art, CCD camera lens directly by irradiation at workpiece end face, according to the propagation of light path, side can form shade, especially for workpiece in irregular shape, shade is more obvious, affect obtaining of the picture of operating personnel to side surface of workpiece.

Utility model content

The deficiency existing for prior art, the purpose of this utility model is to provide a kind of can all illuminate each workpiece face the image measurer that handled easily person obtains picture and carries out the contrast of figure shadow.

For achieving the above object, the utility model provides following technical scheme:

A kind of image measurer, comprise workbench movably, be positioned at the CCD camera lens of workbench top and the light source with CCD configurations of lenses, described workbench is provided with the gearshift of X-direction and the gearshift of Y direction, and be provided with the glass plate for carrying workpiece, the upper surface of described glass plate is higher than worktable upper surface, described workbench is positioned at integrated at least one reflective surface towards glass plate that is provided with in CCD camera lens below, and the angle of described reflective surface and horizontal plane is 45 degree.

By adopting technique scheme, light source is irradiated to after the reflective surface that is miter angle that is placed in its below, according to reflection law, always has the reverberation of horizontal direction to be irradiated to the side of workpiece, obtains the picture of measurement for operating personnel.

Further, the lower end of described reflective surface and the upper surface flush of workbench.

By adopting technique scheme, incident light can be irradiated to whole reflective surface, thereby makes glass plate and the workpiece on workbench can both be bright by illumination, produces without the effect of measuring dead angle.

Further, on described glass plate, be provided with transparent block along X-direction or Y direction.

By adopting technique scheme, in the time measuring the high workpiece of symmetry, the coordinate to workpiece on glass plate requires very high, in the time that workpiece is placed along change in coordinate axis direction, the coordinate of the picture showing on computers is just perfectly clear, the convenient measurement to its symmetry; If workpiece is not placed along change in coordinate axis direction, be difficult to find accurate symmetry axis on the picture of computer, the quality that impact is measured, and to select transparent block be in order not affect the light that is radiated at side surface of workpiece.

Further, described transparent block and glass plate split arrange, and be placed between glass plate and reflective surface, the cross section of described transparent block is isosceles right triangle, comprise inclined-plane and two orthogonal central planes, inclined-plane and reflective surface laminating, a central plane is vertical with glass plate, and another central plane is parallel with glass plate.

By adopting technique scheme, the workpiece of luminous intensity being had relatively high expectations for some, the existence of transparent block has weakened light intensity undoubtedly, so transparent block and glass plate split are arranged, can after alignment workpiece coordinate, remove transparent block like this, not affect the propagation of light. And the shape of triangular prism and reflective surface and glass plate all agree with, install more firm, here, inclined-plane and reflective surface must be fitted, otherwise incident ray can produce refraction effect at each face of transparent block, makes emergent ray no longer be parallel to horizontal plane, can cause and measure dead angle.

Further, on described workbench, a side relative with reflective surface is provided with the projection for blocking glass plate.

By adopting technique scheme, because transparent block is direct and reflective surface laminating has one to the trend gliding, glass blocks can be subject to an outside power may make the outside slippage of glass blocks, if in test, this thing happens, operator must readjust position, affect operating efficiency, so be provided with the baffle plate of opposite side, glass blocks is blocked, avoid occurring the phenomenon of glass plate slippage.

Further, the end face of described transparent block and bottom surface are frosting.

By adopting technique scheme, make to accumulate in light on glass block stronger, can be not directly from end face and the bottom surface ejaculation of glass block.

Beneficial effect: compared with prior art, this technical scheme has solved the hypographous problem of side surface of workpiece, the picture that staff can directly obtain workpiece end face and side carries out the contrast of figure shadow, and can make workpiece place along reference axis, improves the accuracy to workpiece calibration.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is in the utility model to be the light transmition schematic diagram on the reflective surface of 45 degree with the angle of horizontal plane;

Fig. 3 is less than the light transmition schematic diagram on the reflective surface of 45 degree with the angle of horizontal plane in the utility model.

Brief description of the drawings: 1, workbench; 11, reflective surface; 12, projection; 2, glass plate; 3, transparent block; 31, frosting; 4, CCD camera lens; 5, workpiece.

Detailed description of the invention

With reference to Fig. 1, a kind of image measurer, comprise movably workbench 1, the light source that is positioned at the CCD camera lens 4 of workbench 1 top and configures with CCD camera lens 4, workbench 1 intermediate projections is near CCD camera lens 4, and on workbench 1, be provided with the glass plate 2 for carrying workpiece 5, the upper surface of glass plate 2 is higher than workbench 1 upper surface, at least one reflective surface 11 towards glass plate 2 of integrated setting below workbench 1 is positioned at CCD camera lens 4, can certainly multiple reflective surfaces 11 need to be set according to test, here be preferably provided with a reflective surface 11 horizontal by 45 degree on workbench 1 the right.

It is because when light vertically irradiates from reflective surface 11 tops that reflective surface 11 is designed to 45 degree, and with reference to Fig. 2, according to reflection law, reverberation is parallel to horizontal plane and is irradiated to the side of workpiece 5, can not produce measurement dead angle. If angle is not 45 degree, with reference to Fig. 3, its angle is less than 45 while spending, and according to reflection law, reverberation departs from horizontal plane and up reflects, the light that sees through glass plate 2 weakens, the intensity of illumination that is workpiece 5 bottom surfaces weakens, and affects the quality that picture obtains, and reducing along with reflective surface 11 angles, according to the bottom less than workpiece 5 sides, there is measuring dead angle in reverberation. Same, angle is greater than 45 while spending, can occur dead angle on the top of workpiece 5 sides, and this situation does not represent in the accompanying drawings, so the appearance that selected angle is necessary for 45 degree just can avoid occurring measuring dead angle.

And, the accuracy of measuring in order to improve workpiece 5, such as the symmetry of workpiece 5 is measured, to workpiece 5, the coordinate on glass plate 2 requires very high in the measurement of workpiece 5 symmetries, in the time that workpiece 5 is placed along change in coordinate axis direction, the coordinate of the picture showing on computers is just perfectly clear, the convenient measurement to its symmetry; If workpiece 5 is not placed along change in coordinate axis direction, be difficult to find accurate symmetry axis on the picture of computer, the quality that impact is measured. If the directly instrument as alignment coordinates axle reflector, in the time that workpiece 5 contacts with reflective surface 11, the reflective surface 11 that part is positioned at workpiece 5 belows obtains less than illumination, causes obtaining the picture less than workpiece 5 bottom surfaces so. So be provided with transparent block 3 along X-direction or Y direction on glass plate 2, prevent the measurement dead angle to workpiece 5 bottom surfaces. In addition, in order not affect the light that is radiated at workpiece 5 sides, block is arranged to transparent.

In addition, for some, illumination is required to high workpiece 5, the existence of transparent block 3 has weakened light intensity undoubtedly, so by transparent block 3 and glass plate 2 split settings, transparent block 3 is arranged between glass plate 2 and reflective surface 11, can after alignment workpiece 5 coordinates, remove transparent block 3 like this, not affect the propagation of light. Preferably, the cross section of transparent block 3 is isosceles right triangle, comprises inclined-plane and two orthogonal central planes, and inclined-plane and reflective surface 11 are fitted, and a central plane is vertical with glass plate 2, and another central plane is parallel with glass plate 2, can be with reference to Fig. 1. So, vertical light can not produce refraction effect while seeing through the central plane parallel with glass plate 2, thereby is vertically irradiated on reflective surface 11, same, thereby reverberation refraction horizontal irradiation can not occur yet to workpiece 5 sides. And be not the reflective surface 11 of 45 degree for those angles, original reverberation will depart from horizontal plane and produce measurement dead angle, has had the effect of transparent block 3, according to the law of refraction, the light being radiated on workpiece 5 more departs from horizontal plane compared with Fig. 3, and the dead range of formation is larger. Certainly, can the transparent block 3 of corresponding truncated rectangular pyramids shape be set according to glass plate 2 and the distance of reflective surface 11.

In addition, with reference to Fig. 1, transparent block 3 all contacts with reflective surface 11 with glass plate 2, so, transparent block can be stuck between glass blocks and reflective surface 11, what make that the inclined-plane of transparent block and reflective surface 11 fit is tightr, once otherwise slippage occurs for transparent block and reflective surface 11, can form gap between the inclined-plane of transparent block and reflective surface 11, incident ray can be at each face generation refraction effect of transparent block, make emergent ray no longer be parallel to horizontal plane, may cause and measure dead angle. Because transparent block is direct and reflective surface 11 laminatings have one to the trend gliding, glass blocks can be subject to an outside power may make the outside slippage of glass blocks, if in test, this thing happens, operator must readjust position, affect operating efficiency, so be provided with the projection 12 of opposite side, glass blocks is blocked, avoid occurring the phenomenon of glass plate 2 slippages.

In addition, the end face of transparent block and bottom surface are frosting 31, make to accumulate in light on reflective surface 11 stronger, can obtain the picture that quality is higher.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model. It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. an image measurer, comprise movably workbench (1), be positioned at the CCD camera lens (4) of workbench (1) top and the light source with CCD camera lens (4) configuration, described workbench (1) is provided with the gearshift of X-direction and the gearshift of Y direction, and be provided with the glass plate (2) for carrying workpiece (5), the upper surface of described glass plate (2) is higher than workbench (1) upper surface, it is characterized in that, described workbench (1) is positioned at integrated at least one reflective surface towards glass plate (2) (11) that is provided with in CCD camera lens (4) below, described reflective surface (11) is 45 degree with the angle of horizontal plane.

2. image measurer according to claim 1, is characterized in that, the upper surface flush of the lower end of described reflective surface (11) and workbench (1).

3. image measurer according to claim 1, is characterized in that, described glass plate (2) is upper is provided with transparent block (3) along X-direction or Y direction.

4. image measurer according to claim 3, it is characterized in that, described transparent block (3) and glass plate (2) split setting, and be placed between glass plate (2) and reflective surface (11), the cross section of described transparent block (3) is isosceles right triangle, comprises inclined-plane and two orthogonal central planes, inclined-plane and reflective surface (11) laminating, a central plane is vertical with glass plate (2), and another central plane is parallel with glass plate (2).

5. image measurer according to claim 4, is characterized in that, the upper side relative with reflective surface (11) of described workbench (1) is provided with the projection (12) for blocking glass plate (2).

6. image measurer according to claim 4, is characterized in that, the end face of described transparent block (3) and bottom surface are frosting (31).