Caliper push-pull button conformal structure fixing device and measuring tool calibration system

Abstract

The invention discloses a caliper push-pull button conformal structure fixing device and a measuring tool calibration system, and the device comprises a column thrust needle fixing seat unit, an elastic thrust unit, a push-pull direction guide rail, a push-pull force control unit, a contact direction driving unit, a push-pull direction pedestal, and a push-pull direction driving unit. A plurality of elastic thrust needles of the elastic thrust unit are arranged in a thrust needle fixing seat unit, the thrust needle fixing seat unit is arranged on a contact direction driving unit, the contact direction driving unit is connected with a push-pull direction base through a push-pull direction guide rail and a push-pull force control unit, and the push-pull direction base is arranged on the push-pull direction driving unit. The push-and-pull direction driving unit is used for driving the push-and-pull direction base to move, the contact direction driving unit is used for driving the thrust needle fixing seat unit to move in the pointing direction of the elastic thrust needle to be close to a push-and-pull button of the measuring tool, and the elastic thrust needle, making contact with the push-and-pull button, in the elastic thrust unit is shortened, so that the elastic thrust unit is attached to the push-and-pull button.

Description

Technical Field

[0001] The invention relates to the technical field of measuring tool verification and calibration, and in particular to a caliper push-pull button conformal structure fixing device and a measuring tool calibration system. Background Art

[0002] For the automatic calibration system of measuring tools, the fixing mechanism contacts and fixes the push-pull button of the movable measuring jaw of the caliper, and pushes and pulls the measuring jaw to move it, so that the measuring jaw fits the gauge block, and then the indication error of the measuring tool is obtained.

[0003] In the current automated calibration system for measuring tools, since the push-pull buttons of measuring tools have different shapes and sizes, the fixing mechanism cannot adapt to the shape of all push-pull buttons, so that the automated calibration system for measuring tools can only calibrate a small number of measuring tools, or incorrect readings may occur due to incorrect gaps and push-pull forces, which reduces the adaptability, function and accuracy of the calibration system and makes it unable to meet the automated verification and calibration of measuring tools. Summary of the invention

[0004] The invention provides a caliper push-pull button conformal structure fixing device and a measuring tool calibration system, which can solve the problems in the prior art.

[0005] The present invention provides a conformal structure fixing device for a caliper push-pull button, wherein the device comprises a thrust pin fixing seat unit, an elastic thrust unit, a push-pull direction guide rail, a push-pull force control unit, a contact direction driving unit, a push-pull direction base and a push-pull direction driving unit, wherein the elastic thrust unit comprises a plurality of elastic thrust pins, the plurality of elastic thrust pins are arranged in the thrust pin fixing seat unit, the thrust pin fixing seat unit is arranged on the contact direction driving unit, the contact direction driving unit is connected to the push-pull direction base through the push-pull direction guide rail and the push-pull force control unit, so that the contact direction The driving unit moves along the push-pull direction guide rail on the push-pull direction base, and the contact direction driving unit is restricted by the push-pull force control unit to provide a predetermined push-pull force for the measuring tool. The push-pull direction base is arranged on the push-pull direction driving unit, and the push-pull direction driving unit is used to drive the push-pull direction base to move. The contact direction driving unit is used to drive the thrust pin fixing seat unit to move along the direction of the elastic thrust pin to approach the push-pull button of the measuring tool. The elastic thrust pin in the elastic thrust unit that contacts the push-pull button is shortened so that the elastic thrust unit fits the push-pull button.

[0006] Preferably, the plurality of elastic thrust pins are arranged in a rectangular or circular array.

[0007] Preferably, the contact direction driving unit comprises a motor base and a driving motor arranged on the motor base.

[0008] Preferably, the push-pull direction driving unit is a linear motor.

[0009] Preferably, the elastic thrust needle comprises a needle body and a spring arranged on the needle body, and the scaling of the needle body is achieved by the spring.

[0010] Preferably, the material of the device is metal.

[0011] Preferably, the metal is stainless steel and / or aluminum alloy.

[0012] The present invention also provides a measuring tool calibration system, wherein the system comprises the above-mentioned caliper push-pull button conformal structure fixing device.

[0013] Through the above technical solution, when fixing the push-pull button of the measuring tool, the fixing device can be made to fit with the surface of push-pull buttons of various shapes, eliminating the slipping caused by the lack of fit between the fixing device and the push-pull button, which in turn causes insufficient measurement force and large calibration size, thereby improving the verification and calibration accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 An exploded view of a caliper push-pull button conformal structure fixing device according to an embodiment of the present invention is shown;

[0016] Figure 2 An overall diagram of a caliper push-pull button conformal structure fixing device according to an embodiment of the present invention is shown;

[0017] Figure 3 A schematic diagram of a thrust pin fixing seat unit provided with an elastic thrust pin according to an embodiment of the present invention is shown;

[0018] Figure 4 A schematic diagram of an elastic thrust pin according to an embodiment of the present invention is shown;

[0019] Figure 5 A schematic diagram of a contact direction driving unit according to an embodiment of the present invention is shown;

[0020] Figure 6 A schematic diagram showing a push-pull direction guide rail and a push-pull force control unit according to an embodiment of the present invention is shown;

[0021] Figure 7A schematic diagram of a push-pull direction base according to an embodiment of the present invention is shown;

[0022] Figure 8 A schematic diagram of a linear motor according to an embodiment of the present invention is shown;

[0023] Fig. 9 The push and pull knobs of various gages are shown. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0027] like Figure 1-8As shown, an embodiment of the present invention provides a caliper push-pull button conformal structure fixing device, wherein the device includes a thrust pin fixing seat unit 1, an elastic thrust unit 2, a push-pull direction guide rail 3, a push-pull force control unit 4, a contact direction driving unit 5, a push-pull direction base 6 and a push-pull direction driving unit 7, wherein the elastic thrust unit 2 includes a plurality of elastic thrust pins, and the plurality of elastic thrust pins are arranged in the thrust pin fixing seat unit 1, and the thrust pin fixing seat unit 1 is arranged on the contact direction driving unit 5, and the contact direction driving unit 5 is connected to the push-pull direction base 6 through the push-pull direction guide rail 3 and the push-pull force control unit 4, so that the contact direction driving unit 5 is in the The push-pull direction base 6 moves along the push-pull direction guide rail 3, and the contact direction driving unit 5 is restricted by the push-pull force control unit 4 to provide a predetermined push-pull force for the measuring tool. The push-pull direction base 6 is arranged on the push-pull direction driving unit 7, and the push-pull direction driving unit 7 is used to drive the push-pull direction base 6 to move. The contact direction driving unit 5 is used to drive the thrust pin fixing seat unit 1 to move along the direction in which the elastic thrust pin points to approach the push-pull button of the measuring tool (for example, a caliper, a height gauge, an angle gauge, an internal micrometer, etc.), and the elastic thrust pin in the elastic thrust unit 2 that contacts the push-pull button is shortened, so that the elastic thrust unit 2 fits the push-pull button.

[0028] That is, the push-pull direction driving unit can be used to move the elastic thrust pin to a position opposite to the push-pull button of the measuring tool, and then the contact direction driving unit can be used to move the elastic thrust pin toward the push-pull button. In the process of approaching the push-pull button of the measuring tool, part of the elastic thrust pin begins to contact the push-pull button and gradually shortens until the remaining part of the elastic thrust pin is fitted and fixed to the push-pull button, thereby realizing push-pull buttons of various shapes (such as Fig. 9 As shown, where * indicates the fixation of the push-pull button).

[0029] Through the above technical scheme, when fixing the push-pull button of the measuring tool, the fixing device can be made to fit the surface of push-pull buttons of various shapes (that is, adapt to the shapes of various push-pull buttons), thereby eliminating the slipping caused by the lack of fit between the fixing device and the push-pull button, which in turn causes insufficient measurement force and large calibration size, thereby improving the verification and calibration accuracy.

[0030] According to one embodiment of the present invention, the plurality of elastic thrust pins are arranged in a rectangular or circular array.

[0031] In addition to the above-mentioned rectangular array, the plurality of elastic thrust pins may also be arranged in other ways, which is not limited in the present invention.

[0032] According to an embodiment of the present invention, Figure 5 As shown, the contact direction driving unit 5 includes a motor base and a driving motor arranged on the motor base.

[0033] According to an embodiment of the present invention, the push-pull direction driving unit 7 is a linear motor.

[0034] Therefore, the linear motor can drive the push-pull direction base to move along the direction of the linear motor to adapt to measuring tools of various ranges.

[0035] According to an embodiment of the present invention, Figure 4 As shown, the elastic thrust needle includes a needle body and a spring arranged on the needle body, and the scaling of the needle body is achieved by the spring.

[0036] That is, the shortening of the needle body is achieved by the compression of the spring, and the release of the needle body (ie, the initial extended state) is achieved by the release of the spring.

[0037] According to an embodiment of the present invention, the material of the device is metal.

[0038] According to an embodiment of the present invention, the metal is stainless steel and / or aluminum alloy.

[0039] Those skilled in the art should understand that the above description of materials is merely exemplary and is not intended to limit the present invention.

[0040] For example, Figure 6 As shown, the number of push-pull direction guide rails is 2, and the number of push-pull force control units is 2.

[0041] An embodiment of the present invention further provides a measuring tool calibration system, wherein the system includes the caliper push-pull button conformal structure fixing device described in the above embodiment.

[0042] Furthermore, the measuring tool calibration system may also include an adaptive multi-degree-of-freedom motion gauge block mounting seat and gauge block, a collaborative robotic arm, a caliper fixing device, a caliper secondary scale push-pull mechanism, a machine vision caliper reading and measuring device, a caliper library and a control system.

[0043] The caliper push-pull button conformal structure fixing device described in the present invention has been verified by experiments, and its indicators meet the use requirements and have high feasibility. In addition, the caliper push-pull button conformal structure fixing device provides a highly adaptable and efficient push-pull button fixing method for the entire calibration system, so that when the fixing device of the calibration system fixes push-pull buttons of various shapes of measuring tools, the fixing device can fit with the surface of the push-pull button, eliminating the slipping caused by the lack of fit between the fixing device and the push-pull button, which in turn causes insufficient force measurement and large calibration size, thereby improving the verification and calibration accuracy.

[0044] The experimental process, results and data analysis are as follows:

[0045] The object of the present invention has been verified by experiments and has obtained good measurement repeatability and accuracy. In the caliper calibration experiment, the experimental group used 4 groups, each with 10 repeatability measurements. The verification results showed that the overall repeatability of the system was less than 0.003mm, and the measurement uncertainty component introduced by the surface fit of the fixture and the push-pull button was less than or better than 0.001mm, meeting the requirements for caliper verification and calibration.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A conformal structure fixing device for a caliper push-pull button, It is characterized in that The device comprises a thrust pin fixing seat unit (1), an elastic thrust unit (2), a push-pull direction guide rail (3), a push-pull force control unit (4), a contact direction drive unit (5), a push-pull direction base (6) and a push-pull direction drive unit (7), wherein the elastic thrust unit (2) comprises a plurality of elastic thrust pins, the plurality of elastic thrust pins are arranged in the thrust pin fixing seat unit (1), the thrust pin fixing seat unit (1) is arranged on the contact direction drive unit (5), the contact direction drive unit (5) is connected to the push-pull direction base (6) via the push-pull direction guide rail (3) and the push-pull force control unit (4), so that the contact direction drive unit (5) is in contact with the push-pull direction base (6). The push-pull direction base (6) moves along the push-pull direction guide rail (3), and the contact direction driving unit (5) is restricted by the push-pull force control unit (4) to provide a predetermined push-pull force for the measuring tool. The push-pull direction base (6) is arranged on the push-pull direction driving unit (7), and the push-pull direction driving unit (7) is used to drive the push-pull direction base (6) to move. The contact direction driving unit (5) is used to drive the thrust pin fixing seat unit (1) to move along the direction pointed by the elastic thrust pin to approach the push-pull button of the measuring tool, and the elastic thrust pin in the elastic thrust unit (2) that contacts the push-pull button is shortened, so that the elastic thrust unit (2) fits the push-pull button.

2. The device according to claim 1, It is characterized in that The plurality of elastic thrust pins are arranged in a rectangular or circular array.

3. The device according to claim 2, It is characterized in that The contact direction driving unit (5) comprises a motor seat and a driving motor arranged on the motor seat.

4. The device according to claim 3, It is characterized in that The push-pull direction driving unit (7) is a linear motor.

5. The device according to any one of claims 1 to 4, It is characterized in that The elastic thrust needle comprises a needle body and a spring arranged on the needle body, and the spring is used to realize the expansion and contraction of the needle body.

6. The device according to any one of claims 1 to 4, It is characterized in that The material of the device is metal.

7. The device according to claim 6, It is characterized in that The metal is stainless steel and / or aluminum alloy.

8. A measuring tool calibration system, It is characterized in that The system comprises the caliper push-pull knob conformal structure fixing device according to any one of claims 1 to 7.

Images