Fixing and calibration system adaptive to various calipers

Abstract

The invention discloses a self-adaptive fixing and calibrating system for various calipers, which comprises a caliper fixing measuring jaw support base, a caliper push-pull button fixing unit, a caliper body tail movable support end unit and a sounding ruler calibration unit, and is characterized in that a caliper fixing measuring jaw support end is arranged on the caliper fixing measuring jaw support base; a caliper body tail supporting end is arranged on a movable assembly of the caliper body tail movable supporting end unit, and a caliper fixed measuring jaw and a caliper body tail of a calibrated caliper are arranged on the caliper fixed measuring jaw supporting end and the caliper body tail supporting end respectively. The caliper fixed measuring jaw and the tail portion of the caliper body are pressed tightly through movement of the movable assembly towards the caliper fixed measuring jaw, the caliper push-pull button fixing unit is used for fixing the caliper push-pull button, and the depth ruler calibration unit is arranged on the base and comprises a measuring block and a first driving mechanism. The first driving mechanism is used for driving the gauge block to move in the caliper body direction and driving the gauge block to move away from or close to the caliper depth gauge.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gauge verification and calibration, and in particular to a self-adaptive fixing and calibration system for multiple calipers. BACKGROUND

[0002] For an automatic gauge calibration system, an automatic mechanism fixes both ends of a gauge such as a caliper, and moves the movable measuring jaw by a yoke to make the measuring jaw adhere to the gauge block, and then the indication error of the gauge is obtained.

[0003] In the current automatic gauge calibration system, since the length specifications of gauges such as calipers are various (for example, 150 mm, 200 mm, 300 mm, 1000 mm, etc.), and the depth gauge and the fixing tool interfere with each other, the depth gauge of the caliper cannot be calibrated in one set of tools, so that the automatic gauge calibration system can only calibrate a small part of gauges, or because the tool design is too complex, the stability decreases, the gap and the incorrect pushing and pulling force cause reading errors, the adaptability, function and precision of the calibration system decrease, and thus the automatic verification and calibration of gauges cannot be met.

[0004] That is, the disadvantage of the prior art is that when the length specifications and shapes of gauges (calipers) are different, the verification and calibration cannot be completed by one unified fixing device. If the new gauge fixing structure is frequently replaced, the stability decreases, the gap and the incorrect pushing and pulling force cause reading errors, and the automatic verification and calibration of gauges cannot be met. SUMMARY

[0005] The present application provides a self-adaptive fixing and calibration system for multiple calipers, which can solve the problems in the prior art.

[0006] This invention provides an adaptive system for fixing and calibrating various calipers. The system includes a caliper fixing jaw support base, a caliper push-pull button fixing unit, a movable support end unit for the caliper body tail, and a depth gauge calibration unit. The movable support end unit for the caliper body tail is mounted on the caliper fixing jaw support base, and the caliper fixing jaw support base has a caliper fixing jaw support end. The movable support end unit for the caliper body tail includes a base and a movable component mounted on the base. The movable component has a caliper body tail support end. The caliper fixing jaw and the caliper body tail of the caliper being calibrated are respectively located at the caliper fixing jaw support end and the caliper body. At the tail support end, the movable component moves towards the caliper fixing jaw to press the caliper fixing jaw and the tail of the caliper body. The caliper push-pull button fixing unit is set on the base to fix the caliper push-pull button. The depth measuring scale calibration unit is set on the base. The depth measuring scale calibration unit includes a gauge block and a first drive mechanism set below the gauge block. The first drive mechanism is used to drive the gauge block to move in the scale direction and to drive the gauge block away from or towards the caliper depth measuring scale, so that the tail of the caliper body contacts the left end measuring surface of the gauge block, and the caliper depth measuring scale contacts the measuring reference surface of the gauge block adjacent to the left end measuring surface of the gauge block.

[0007] Preferably, the movable support end unit at the tail of the ruler further includes a linear guide rail, which is disposed on the base, and the movable component moves along the linear guide rail.

[0008] Preferably, the movable support end unit at the tail of the ruler further includes a second drive mechanism for driving the movable component to move.

[0009] Preferably, the second drive mechanism is a linear motor.

[0010] Preferably, the caliper push-pull button fixing unit includes a fixing base and an elastic thrust member disposed in the fixing base. The elastic thrust member includes a plurality of elastic thrust pins. The elastic thrust pins in the elastic thrust member that are in contact with the caliper push-pull button are shortened so that the elastic thrust member fits snugly against the caliper push-pull button.

[0011] Preferably, the plurality of elastic thrust pins are arranged in a rectangular or circular array.

[0012] Preferably, the elastic thrust needle includes a needle body and a spring disposed on the needle body, through which the expansion and contraction of the needle body are realized.

[0013] Preferably, the depth gauge calibration unit further includes a mounting base, the gauge block and the first drive mechanism are disposed on the mounting base, and the first drive mechanism includes a motor for driving the gauge block to move in the scale direction and a displacement transmission component for driving the gauge block to move away from or closer to the caliper depth gauge.

[0014] Through the above technical solution, the tail support unit of the calibration system can change the support position according to the different length specifications of the measuring instruments when fixing calipers of different length specifications. It can also clamp and fix the caliper body, realize the calibration of depth gauges in the same set of tooling, eliminate the problem of slippage caused by the measuring instrument fixing mechanism not being able to fit efficiently and completely with the end of the measuring instrument, which leads to insufficient measuring force and excessive calibration size, and improve the verification and calibration accuracy. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are provided to further illustrate embodiments of the invention and, together with the textual description, explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0016] Figure 1 An exploded view of an adaptive multi-caliper fixing and calibration system according to an embodiment of the present invention is shown;

[0017] Figure 2 An overall diagram of an adaptive multi-caliper fixing and calibration system according to an embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram of a caliper fixing jaw support base according to an embodiment of the present invention is shown;

[0019] Figures 4A-4B A schematic diagram of a caliper push-pull button fixing unit according to an embodiment of the present invention is shown;

[0020] Figure 5 A schematic diagram of an elastic thrust pin according to an embodiment of the present invention is shown;

[0021] Figure 6 A schematic diagram of a movable support end unit at the tail of a ruler according to an embodiment of the present invention is shown;

[0022] Figures 7A-7C A schematic diagram of a depth gauge calibration unit according to an embodiment of the present invention is shown. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0026] like Figure 1As shown in Figure 7, this embodiment of the invention provides an adaptive fixing and calibration system for various calipers. The system includes a caliper fixing jaw support base 1, a caliper push-pull button fixing unit 2, a caliper tail movable support end unit 3, and a depth gauge calibration unit 4. The caliper tail movable support end unit 3 is disposed on the caliper fixing jaw support base 1. A caliper fixing jaw support end 11 is disposed on the caliper fixing jaw support base 1. The caliper tail movable support end unit 3 includes a base and a movable component disposed on the base. The movable component is provided with the caliper tail support end 31. The caliper fixing jaw 51 and the caliper tail 52 of the caliper being calibrated 5 are respectively disposed on the caliper fixing jaw support end 11 and the caliper tail. The caliper is supported on the base 31, and the movable component moves towards the caliper fixing jaw 51 to press the caliper fixing jaw 51 and the tail of the caliper body 52. ​​The caliper push-pull button fixing unit 2 is disposed on the base to fix the caliper push-pull button. The depth measuring scale calibration unit 4 is disposed on the base. The depth measuring scale calibration unit 4 includes a gauge block 41 and a first driving mechanism disposed below the gauge block. The first driving mechanism is used to drive the gauge block to move in the scale direction and to drive the gauge block away from or towards the caliper depth measuring scale, so that the tail of the caliper body 52 contacts the left end measuring surface of the gauge block, and the caliper depth measuring scale contacts the measuring reference surface of the gauge block adjacent to the left end measuring surface of the gauge block (thereby, depth measuring scale calibration can be performed).

[0027] The caliper's fixed jaw support base 1 and the movable support end unit 3 at the tail of the caliper together constitute a fixing mechanism to fix the caliper. When calibrating the caliper's moving jaw, the first drive mechanism drives the gauge block to move away from the caliper's depth measuring scale (i.e., move perpendicular to the scale in the plane where the caliper is located); when calibrating the caliper's depth measuring scale, the first drive mechanism drives the gauge block to move closer to the caliper's depth measuring scale.

[0028] Through the above technical solution, the fixing mechanism of the calibration system can change the support position of its tail support unit according to the different length specifications of the measuring instruments when fixing calipers of different length specifications (that is, by adjusting the support end position of the movable support end unit at the tail of the caliper body, it can adapt to calipers of different lengths). Moreover, it can clamp and fix the caliper body, realize the calibration of depth gauges in the same set of tooling, eliminate the problem of slippage caused by the inability of the measuring instrument fixing mechanism to fully and efficiently fit with the end of the measuring instrument, which leads to insufficient measuring force and excessive calibration dimensions, and improve the verification and calibration accuracy.

[0029] According to one embodiment of the present invention, the movable support end unit 3 at the tail of the ruler body further includes a linear guide rail 32, which is disposed on the base, and the movable component moves along the linear guide rail 32.

[0030] According to one embodiment of the present invention, the movable support end unit 3 at the tail of the ruler further includes a second driving mechanism for driving the movable component to move.

[0031] According to one embodiment of the present invention, the second drive mechanism is a linear motor.

[0032] According to an embodiment of the present invention, as shown in FIG4, the caliper push-pull button fixing unit 2 includes a fixing base and an elastic thrust member disposed in the fixing base. The elastic thrust member includes a plurality of elastic thrust pins. The elastic thrust pins in the elastic thrust member that are in contact with the caliper push-pull button are shortened, so that the elastic thrust member fits against the caliper push-pull button.

[0033] In other words, as the caliper push-pull button fixing unit gets closer to the caliper push-pull button, the push pin in the elastic push member that contacts the push-pull button will shorten. This allows the elastic push member to fit the shape of the caliper push-pull button, thereby fixing the caliper push-pull button. Then, the caliper moving jaw (auxiliary scale) can be moved by the caliper push-pull button fixing unit.

[0034] According to one embodiment of the present invention, a plurality of the elastic thrust pins are arranged in a rectangular or circular array.

[0035] In addition to the array method described above, the multiple elastic thrust pins can also be arranged in other ways, and the present invention does not limit them.

[0036] According to one embodiment of the present invention, such as Figure 5 As shown, the elastic thrust needle includes a needle body and a spring disposed on the needle body, and the expansion and contraction of the needle body are realized by the spring.

[0037] In other words, the needle body can be shortened by compressing the spring, and the needle body can be released (i.e., the initial extended state) by releasing the spring.

[0038] According to one embodiment of the present invention, as shown in FIG7, the depth gauge calibration unit 4 further includes a mounting base 42, the gauge block 41 and the first driving mechanism are disposed on the mounting base 42, and the first driving mechanism includes a motor 44 for driving the gauge block 41 to move in the scale direction and a displacement transmission component 43 for driving the gauge block 41 to move away from or closer to the caliper depth gauge.

[0039] For example, gauge block 41 can be a 20mm gauge block; the motor can work with guide rail 45 to move the gauge block (i.e., the motor drives the gauge block to move along the guide rail).

[0040] According to one embodiment of the present invention, the adaptive multi-caliper fixing and calibration system may further include a collaborative robotic arm, a machine vision caliper reading and measuring device, a caliper library, and a control system.

[0041] The adaptive multi-caliper fixing and calibration system described in this invention has been experimentally verified and has achieved good measurement repeatability and accuracy. In the caliper calibration experiment, four groups of 10 repeatable measurements were used in each group. The verification results showed that the overall system repeatability was less than 0.003 mm, and the measurement uncertainty component introduced by the different caliper length specifications was better than 0.001 mm, meeting the requirements for caliper verification and calibration.

[0042] Therefore, it is evident that after using the adaptive caliper fixing and calibration system described in this invention, the measurement uncertainty component introduced by the different caliper length specifications is better than 0.001 mm, meeting the requirements for caliper verification and calibration. Furthermore, this invention also has good practical application prospects for the verification and calibration of other measuring instruments. This invention provides a highly adaptable and efficient fixing device for calipers of different length specifications, enabling automated and intelligent verification and calibration of measuring instruments, thus making it possible to significantly improve verification and calibration efficiency.

[0043] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0044] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0045] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adaptive fixing and calibration system for various calipers, characterized in that, The system includes a caliper fixed jaw support base (1), a caliper push-pull button fixing unit (2), a caliper tail movable support end unit (3), and a depth gauge calibration unit (4). The caliper tail movable support end unit (3) is disposed on the caliper fixed jaw support base (1). The caliper fixed jaw support base (1) is provided with a caliper fixed jaw support end (11). The caliper tail movable support end unit (3) includes a base and a movable component disposed on the base. The movable component is provided with a caliper tail support end (31). The caliper fixed jaw (51) and the caliper tail (52) of the caliper being calibrated (5) are respectively disposed on the caliper fixed jaw support end (11) and the caliper tail support end (31). 1) On the base, and by moving the movable component toward the caliper fixing jaw (51) to press the caliper fixing jaw (51) and the tail of the caliper body (52), the caliper push-pull button fixing unit (2) is set on the base for fixing the caliper push-pull button, the depth measuring scale calibration unit (4) is set on the base, the depth measuring scale calibration unit (4) includes a gauge block (41) and a first driving mechanism set below the gauge block, the first driving mechanism is used to drive the gauge block to move in the scale direction and drive the gauge block away from or close to the caliper depth measuring scale, so that the tail of the caliper body (52) contacts the left end measuring surface of the gauge block, and the caliper depth measuring scale contacts the measuring reference surface of the gauge block adjacent to the left end measuring surface of the gauge block.

2. The system according to claim 1, characterized in that, The movable support end unit (3) at the tail of the ruler also includes a linear guide rail (32), which is disposed on the base, and the movable component moves along the linear guide rail (32).

3. The system according to claim 2, characterized in that, The movable support end unit (3) at the tail of the ruler also includes a second drive mechanism for driving the movable component to move.

4. The system according to claim 3, characterized in that, The second drive mechanism is a linear motor.

5. The system according to claim 1, characterized in that, The caliper push-pull button fixing unit (2) includes a fixing base and an elastic thrust member disposed in the fixing base. The elastic thrust member includes a plurality of elastic thrust pins. The elastic thrust pins in the elastic thrust member that are in contact with the caliper push-pull button are shortened so that the elastic thrust member fits against the caliper push-pull button.

6. The system according to claim 5, characterized in that, The plurality of the elastic thrust pins are arranged in a rectangular or circular array.

7. The system according to claim 6, characterized in that, The elastic thrust needle includes a needle body and a spring disposed on the needle body, through which the needle body can be expanded or contracted.

8. The system according to any one of claims 1-7, characterized in that, The depth gauge calibration unit (4) further includes a mounting base (42), the gauge block (41) and the first drive mechanism are mounted on the mounting base (42), and the first drive mechanism includes a motor (44) for driving the gauge block (41) to move in the scale direction and a displacement transmission component (43) for driving the gauge block (41) to move away from or closer to the caliper depth gauge.

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