CN214502844U

CN214502844U - Calibration device for scale magnifier

Info

Publication number: CN214502844U
Application number: CN202120628675.6U
Authority: CN
Inventors: 吴建平
Original assignee: Suzhou Institute Of Metrology
Current assignee: Suzhou Institute Of Metrology
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-10-26
Anticipated expiration: 2031-03-26

Abstract

The application discloses scale magnifying glass calibrating device, including base, stand, fixer, portable platform, rotating assembly, standard scale plate and light source subassembly, the stand sets up on the base, the fixer connects with liftable on the stand, the fixer is used for fixed scale magnifying glass, portable platform sets up on the base and can for the base removes, rotating assembly sets up on portable platform, the standard scale plate is installed on the rotating assembly, rotating assembly makes standard scale plate can rotate for portable platform, the light source subassembly is used for standard scale plate provides the illumination, the light source subassembly sets up on the base, from this, need not hand scale magnifying glass, be convenient for adjust scale and standard scale plate, provide quick accurate cooperation, The auxiliary lighting guarantees the stability and the convenience of measurement, and overcomes the difficult problems of unstable manual alignment, time and labor waste.

Description

Calibration device for scale magnifier

Technical Field

The utility model relates to an instrument calibration field especially relates to the calibration of scale magnifying glass.

Background

The scale magnifier is a visual optical device for observing tiny details of an object, and is widely applied to industries such as electronic components, printed products, cloth textile and the like. The scale magnifier has various varieties, and the core part of the scale magnifier comprises a lens and a scale reticle.

When the scale magnifier is calibrated, a standard ruler is generally measured by using the scale magnifier, or an image measuring instrument is used for measuring the scale value of the scale reticle inside the magnifier and calculating the scale error of the scale reticle. However, when the standard ruler is used for calibration, the standard ruler is placed at the bottom of the scale magnifier, the position of the scale magnifier needs to be adjusted each time, the workload is increased, the scale magnifier needs to be held by hands, no shaking is caused, otherwise, the measured data has large error, and the detection efficiency is low; when the imager is used for measuring and calibrating, the scale magnifier is difficult to fix, and the imager only calibrates the scale value of the scale reticle, and does not consider factors such as the magnification of the scale magnifier, so that the accurate measurement is difficult to ensure. In addition, no calibration device special for the scale magnifier is used for measurement and calibration, so that the device is time-consuming and labor-consuming and has low accuracy.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a scale magnifying glass calibrating device need not hand scale magnifying glass, can conveniently adjust the position of scale magnifying glass and standard scale plate to provide light source module and carry out the auxiliary lighting, can carry out quick accurate cooperation, and guarantee measuring stability, convenience, overcome artifical alignment unstability, the difficult problem that wastes time and energy.

In order to achieve the purpose, the calibration device for the scale magnifier comprises a base, an upright post, a fixer, a movable table, a rotating assembly, a standard scale plate and a light source assembly, wherein the upright post is arranged on the base, the fixer is connected to the upright post in a liftable manner, the fixer is used for fixing the scale magnifier, the movable table is arranged on the base and can move relative to the base, the rotating assembly is arranged on the movable table, the standard scale plate is arranged on the rotating assembly, the rotating assembly enables the standard scale plate to rotate relative to the movable table, the light source assembly is used for providing illumination for the standard scale plate, and the light source assembly is arranged on the base or the movable table.

Optionally, a lifting mechanism is provided on the upright, and the fixer is connected to the upright through the lifting mechanism.

Optionally, the fixer includes a connecting portion and a fixing component, one end of the connecting portion is connected to the upright, the other end is connected to the fixing component, and the fixing component is used for fixing the scale magnifier.

Optionally, the movable stage moves on the base in two mutually perpendicular directions of a horizontal plane.

Optionally, the rotating assembly is disposed at an upper portion of the movable table, the rotating assembly includes a fixed member and a rotating member, the fixed member is configured to be fixed to the movable table, the rotating member is rotatably connected to the fixed member, and the standard scale plate is mounted on the rotating member.

Optionally, the bottom of the base is provided with 4 horizontal adjustment supporting members, and the horizontal adjustment supporting members have variable heights and support the base at the same height.

On the other hand, the specific using process of the calibration device for the scale magnifier in the technical scheme comprises the following steps:

installing a standard scale plate on the rotating assembly, and turning on a light source of the light source assembly;

the scale magnifier is fixed on the fixing component, and the fixing plate can be driven to move by rotating the fixing knob so as to clamp and fix the scale magnifier;

the lifting mechanism is used for controlling the scale magnifier to descend so that the scale magnifier descends onto the rotating assembly and is overlapped with a standard scale plate arranged on the rotating assembly;

remove standard scale plate through portable platform, rotate standard scale plate through rotatory subassembly for the scale mark of standard scale plate aligns with the scale mark of scale magnifying glass, reads and takes notes the corresponding actual numerical value of the measurement numerical value of scale magnifying glass and standard scale plate, will measurement numerical value with actual numerical value compares, calculates the error of the scale magnifying glass of being calibrated, thereby it is right the scale magnifying glass of being calibrated calibrates.

Because of the technical scheme, the utility model discloses following beneficial effect has:

the utility model provides a scale magnifying glass calibrating device, fixed scale magnifying glass and standard scale plate when the calibration, and liftable scale magnifying glass, remove, rotate standard scale plate, and provide the light source subassembly that is used for the illumination, realize when calibration scale magnifying glass from this, need not hand scale magnifying glass, can conveniently adjust the position of scale magnifying glass and standard scale plate, aim at the scale mark of scale magnifying glass and standard scale plate fast, and provide the light source subassembly and carry out the auxiliary lighting, can carry out quick accurate cooperation, and guarantee measured stability, the convenience, the measuring accuracy is greatly improved, overcome artifical alignment unstability, the difficult problem of wasting time and energy.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

Fig. 1 is the utility model provides a calibration device for scale magnifier's structural schematic diagram.

Fig. 2 is the utility model provides a diagram of the cross scale magnifying glass measurement error curve that is calibrated.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below 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, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to realize the technical scheme of the utility model, be convenient for understand and use the utility model discloses, will combine specific embodiment, further explain the utility model discloses a theory of operation.

Example 1

The embodiment provides a calibration device for a scale magnifier, which comprises a base 1, a stand column 8, a fixer 10, a movable table 2, a rotating assembly 5, a standard scale plate 7 and a light source assembly 6, wherein the stand column 8 is arranged on the base 1, the fixer 10 is connected on the stand column 8 in a liftable mode, and the fixer 10 is used for fixing a scale magnifier 12. Optionally, the base 1 is made of stainless steel with high hardness, and is not easy to wear and high in stability.

Optionally, a lifting mechanism is disposed on the upright 8, and the fixer 10 is connected to the upright 8 through the lifting mechanism. The lifting mechanism can be manually controlled, so that the lifting of the fixer 10 and the scale magnifier 12 fixed on the fixer 10 can be manually controlled. Optionally, a lifting hand wheel 9 is arranged on the side wall of the upright post 8, and the lifting hand wheel 9 is rotated to control the lifting of the lifting mechanism, so as to control the lifting of the fixer 10 and the scale magnifier 12.

Optionally, the fixer 10 includes a connecting portion and a fixing component 11, one end of the connecting portion is connected to the lifting mechanism of the upright post 8, the other end is connected to the fixing component 11, and the fixing component 11 is used for fixing the scale magnifier 12.

Optionally, the fixing assembly 11 comprises two fixing plates, and the scale magnifier 12 is fixed between the two fixing plates. Optionally, the fixing assembly 11 further includes a fixing frame, the fixing frame is connected to the connecting portion, and the fixing plate is connected to the fixing frame. At least one of the fixing plates is movably connected to the fixing frame. The fixing frame comprises two frame side parts, at least one frame side part is provided with a screw hole, the screw hole penetrates through a screw rod, one end of the screw rod is fixed with a fixing knob, the other end of the screw rod is fixed with the fixing plate, and the fixing knob is rotated to drive the screw rod to move, so that the fixing plate connected with the fixing knob is close to or far away from the other fixing plate. The fixing assembly 11 further includes a guide bar fixedly connected to the fixing frame and penetrating the fixing plate to guide the fixing plate to move in a desired direction along the guide bar.

The movable table 2 is provided on the base 1 and is movable relative to the base 1, and a standard scale plate 7 is mounted on the movable table 2 by a rotating assembly 5, whereby the position of the standard scale plate 7 is adjusted by the movement of the movable table 2.

Alternatively, the movable stage 2 is moved on the base 1 in two mutually perpendicular directions of a horizontal plane. In a preferred embodiment, the movable stage 2 comprises two

position adjusting elements

3, 4, and the two

position adjusting elements

3, 4 are respectively used for controlling the movable stage 2 to move in the two mutually perpendicular directions, so that the position of the standard scale plate 7 can be conveniently adjusted.

The rotating assembly 5 is arranged on the movable table 2, the standard scale plate 7 is mounted on the rotating assembly 5, and the rotating assembly 5 enables the standard scale plate 7 to rotate relative to the movable table 2.

Alternatively, the rotating assembly 5 is disposed at an upper portion of the movable stage 2, and the rotating assembly 5 includes a fixed member for being fixed to the movable stage 2 and a rotating member rotatably connected to the fixed member, and the standard scale plate 7 is mounted on the rotating member, and the rotating member enables the standard scale plate 7 mounted thereon to rotate.

The standard scale plate 7 is provided with standard scale lines such as length, angle, arc and/or grid, and a glass scale plate is generally adopted.

The light source assembly 6 is used for providing illumination for the standard scale plate 7 so as to facilitate reading by a measuring person. The light source assembly 6 comprises a lamp holder and a light source, the light source is arranged on the lamp holder, and the light source assembly 6 is arranged on the base 1 or the movable table 2 through the lamp holder. Optionally, the light source assembly 6 is disposed on the base 1 and at the bottom of the movable stage 2, and the movable stage 2 is provided with a through hole for light to pass through, so that the light source assembly 6 can pass through the through hole of the movable stage 2 to provide illumination for the standard scale plate 7.

Optionally, the bottom of the base 1 is provided with 4 horizontal adjusting supports 13, and the horizontal adjusting supports 13 are variable in height and support the base 1 at the same height.

The specific using process of the calibration device for the scale magnifier comprises the following steps:

installing a standard scale plate 7 on the rotating assembly 5, and turning on a light source of the light source assembly 6;

the scale magnifier 12 is fixed on the fixing component 11, and the fixing plate can be driven to move by rotating the fixing knob so as to clamp and fix the scale magnifier 12;

the lifting mechanism controls the scale magnifier 12 to descend so that the scale magnifier 12 descends onto the rotating assembly 5 and is superposed with the standard scale plate 7 arranged on the rotating assembly 5;

remove standard scale plate 7 through movable table 2, rotate standard scale plate 7 through rotating assembly 5 for the scale mark of standard scale plate 7 aligns with the scale mark of scale magnifying glass 12, reads and records the corresponding actual numerical value of measurement numerical value and standard scale plate 7 of scale magnifying glass 12, will measurement numerical value with actual numerical value compares, calculates the error of the scale magnifying glass 12 of being calibrated, and is right the scale magnifying glass 12 of being calibrated calibrates.

Below, taking calibration cross scale magnifying glass as an example, adopt above-mentioned scale magnifying glass calibrating device to calibrate the calibration cross scale magnifying glass, this calibrating device adopts cross scale glass calibration board. The main parameters of the cross scale magnifier to be calibrated are shown in table 1, and the main parameters of the adopted cross scale glass calibration plate are shown in table 2.

TABLE 1

Name (R)	Measuring range	Maximum allowable error	Minimum scale value
				Scale magnifier	(0-10)mm	≤±0.1mm	0.1mm

TABLE 2

Name (R)	Measuring range	Maximum allowable error	Minimum scale value
				Cross scale glass calibration plate	(0-50)mm	≤2μm	0.01mm

When calibrating the cross scale magnifier, firstly, the cross scale glass calibration plate is installed on the rotating component 5 of the calibration device, the light source of the light source component 6 is opened, the cross scale magnifier is fixed on the fixed component 11, and the lifting mechanism, the movable platform 2 and the rotating component 5 are successively adjusted to ensure that the scale mark of the cross scale magnifier is aligned and coincided with the scale mark on the cross scale glass calibration plate, and then the scale mark numerical value L on the cross scale glass calibration plate is recorded₀And correspondingly, calculating the measurement value error delta of the cross scale magnifier according to the following formula:

δ＝L-L₀

uniformly collecting the measured values and actual values of the calibrated cross scale magnifier and the cross scale glass calibration plate used by the calibration device at 10 measuring points, comparing, calculating and analyzing the 10 groups of measured data, as shown in table 3, and obtaining a measurement error curve of the calibrated cross scale magnifier, as shown in fig. 2.

As shown in fig. 2, the error of the measured value of the calibrated scale magnifier at the measuring point 10mm is the largest, and is +0.08mm, and the maximum allowable error is not more than or equal to ± 0.1mm, so that the measurement accuracy of the scale magnifier calibrated by the calibration device provided by the embodiment meets the factory requirements.

TABLE 3

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A calibration device for a scale magnifier is characterized by comprising a base (1), an upright post (8), a fixer (10), a movable table (2), a rotating assembly (5), a standard scale plate (7) and a light source assembly (6), wherein the upright post (8) is arranged on the base (1), the fixer (10) is connected on the upright post (8) in a lifting manner, the fixer (10) is used for fixing the scale magnifier (12), the movable table (2) is arranged on the base (1) and can move relative to the base (1), the rotating assembly (5) is arranged on the movable table (2), the standard scale plate (7) is arranged on the rotating assembly (5), the rotating assembly (5) enables the standard scale plate (7) to rotate relative to the movable table (2), the light source assembly (6) is used for providing illumination for the standard scale plate (7), and the light source assembly (6) is arranged on the base (1).

2. A scale magnifier calibration device according to claim 1, wherein a lifting mechanism is provided on the upright (8), and the holder (10) is connected to the upright (8) via the lifting mechanism.

3. A scale magnifier calibration device according to claim 1 or 2, wherein the holder (10) comprises a connecting part and a fixing assembly (11), the connecting part is connected to the upright (8) at one end and connected to the fixing assembly (11) at the other end, and the fixing assembly (11) is used for fixing the scale magnifier (12).

4. A scale magnifier calibration device according to claim 3, wherein the fixing assembly (11) comprises two fixing plates, and the scale magnifier (12) is fixed between the two fixing plates.

5. A scale magnifier calibration apparatus according to claim 4, wherein the fixing assembly (11) further comprises a fixed frame to which at least one of the fixing plates is movably attached.

6. A scale magnifier calibration device according to claim 1, wherein said movable stage (2) is movable on said base (1) in two mutually perpendicular directions along a horizontal plane.

7. A scale magnifier calibration device according to claim 6, wherein the movable stage (2) comprises two position adjusting members for controlling the movement of the movable stage (2) in the two mutually perpendicular directions, respectively.

8. A scale magnifier calibration device according to claim 1, wherein the rotating assembly (5) is arranged on the upper part of the movable stage (2), the rotating assembly (5) comprising a fixed part for fixing to the movable stage (2) and a rotating part in rotational connection with the fixed part, the standard scale plate (7) being mounted on the rotating part.

9. A scale magnifier calibration device according to claim 1, wherein said standard scale plate (7) is a glass scale plate.

10. A scale magnifier calibration device according to claim 1, wherein the base (1) is provided at its bottom with 4 horizontal adjusting supports (13), said horizontal adjusting supports (13) being variable in height and supporting the base (1) at the same height.