Fixing and calibrating method adaptive to various calipers

Abstract

The invention discloses a fixing and calibrating method adaptive to various calipers, and the method comprises the steps: a caliper fixed measuring jaw supporting end and a caliper body tail movable supporting end unit are disposed on a caliper fixed measuring jaw supporting pedestal, and the caliper body tail movable supporting end unit comprises a pedestal and a movable assembly disposed on the pedestal; the movable assembly is provided with a caliper body tail supporting end. A caliper fixing measuring jaw and a caliper body tail of the calibrated caliper are respectively arranged on the caliper fixing measuring jaw supporting end and the caliper body tail supporting end; the caliper fixed measuring jaw and the tail part of the caliper body are pressed tightly through the movement of the movable assembly towards the caliper fixed measuring jaw; the caliper push-pull button fixing unit is arranged on the base to fix the caliper push-pull button; a depth gauge calibration unit is arranged on the base, and the depth gauge calibration unit comprises a gauge block and a first driving mechanism arranged below the gauge block; the first driving mechanism drives the gauge block to move in the caliper body direction and drives the gauge block to move away from or close to the caliper depth gauge.

Description

Technical Field

[0001] This invention relates to the field of measuring instrument verification and calibration technology, and in particular to an adaptive method for fixing and calibrating various calipers. Background Technology

[0002] For automated calibration systems of measuring instruments, the automatic mechanism fixes both ends of the measuring instrument, such as calipers, and uses a fork to push the movable jaw to move, so that the measuring jaw fits against the gauge block, thereby obtaining the indication error of the measuring instrument.

[0003] In current automated calibration systems for measuring instruments, due to the wide variety of length specifications for instruments such as calipers (e.g., 150mm, 200mm, 300mm, 1000mm, etc.), and the interference between the depth gauge and the fixed fixture, the depth gauge of the caliper cannot be calibrated simultaneously in one set of fixtures. This means that the automated calibration system can only calibrate a small number of measuring instruments. Alternatively, the fixture design may be too complex, leading to decreased stability, gaps, incorrect push-pull forces, and reading errors. This reduces the adaptability, functionality, and accuracy of the calibration system, making it unable to meet the requirements for automated verification and calibration of measuring instruments.

[0004] In other words, the drawback of existing technical solutions is that when measuring instruments (calipers) vary in length, specifications, and shape, it is impossible to complete the verification and calibration using a unified fixing device. Frequent replacement of the measuring instrument fixing structure will cause a decrease in stability, and reading errors will occur due to incorrect clearance and push-pull force, thus failing to meet the requirements for automated verification and calibration of measuring instruments. Summary of the Invention

[0005] This invention provides an adaptive method for fixing and calibrating various calipers, which can solve the problems in the prior art.

[0006] This invention provides a method for fixing and calibrating adaptive calipers, wherein the method includes:

[0007] A caliper fixed jaw support end and a movable support end unit for the tail of the caliper body are provided on a caliper fixed jaw support base. The movable support end unit for the tail of the caliper body includes a base and a movable component provided on the base. The movable component is provided with the caliper tail support end.

[0008] The caliper fixing jaws and the tail of the caliper body to be calibrated are respectively set on the caliper fixing jaw support end and the caliper tail support end;

[0009] The movable component moves toward the caliper fixing jaw to press the caliper fixing jaw and the tail of the caliper body.

[0010] The caliper push-pull button fixing unit is set on the base to fix the caliper push-pull button;

[0011] A depth gauge calibration unit is mounted on the base. The depth gauge calibration unit includes a gauge block and a first drive mechanism disposed below the gauge block.

[0012] The first driving mechanism is used to drive the gauge block to move in the scale direction and to move the gauge block away from or towards the caliper depth gauge, so that the tail of the caliper scale contacts the left end measuring surface of the gauge block, and the caliper depth gauge contacts the measuring reference surface of the gauge block adjacent to the left end measuring surface of the gauge block.

[0013] Preferably, the method further includes: setting the linear guide rail on the base, and the movable component moving along the linear guide rail.

[0014] Preferably, the movable support end unit at the tail of the ruler further includes a second drive mechanism, which drives the movable component to move.

[0015] Preferably, the second drive mechanism is a linear motor.

[0016] 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.

[0017] Preferably, the plurality of elastic thrust pins are arranged in a rectangular or circular array.

[0018] 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.

[0019] Preferably, the depth gauge calibration unit further includes a mounting base on which the gauge block and the first drive mechanism are mounted. The motor of the first drive mechanism drives the gauge block to move in the direction of the gauge body, and the displacement transmission component of the first drive mechanism drives the gauge block to move away from or closer to the caliper depth gauge.

[0020] Through the above technical solution, when fixing calipers of different lengths, the tail support unit can change the support position according to the different lengths of the measuring instruments, and can also clamp and fix the caliper body, so as to realize the calibration of the depth gauge in the same set of tooling. This eliminates the problem in the existing technology that the measuring instrument fixing mechanism cannot efficiently and completely fit with the end of the measuring instrument, causing slippage, which in turn leads to insufficient measuring force and excessive calibration size, thus improving the verification and calibration accuracy. Attached Figure Description

[0021] 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.

[0022] Figure 1 An exploded view of an adaptive multi-caliper fixing and calibration system according to an embodiment of the present invention is shown;

[0023] Figure 2 An overall diagram of an adaptive multi-caliper fixing and calibration system according to an embodiment of the present invention is shown;

[0024] Figure 3 A schematic diagram of a caliper fixing jaw support base according to an embodiment of the present invention is shown;

[0025] Figures 4A-4B A schematic diagram of a caliper push-pull button fixing unit according to an embodiment of the present invention is shown;

[0026] Figure 5 A schematic diagram of an elastic thrust pin according to an embodiment of the present invention is shown;

[0027] 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;

[0028] Figures 7A-7C A schematic diagram of a depth gauge calibration unit according to an embodiment of the present invention is shown;

[0029] Figure 8 A flowchart of an adaptive method for fixing and calipering multiple calipers according to an embodiment of the present invention is shown. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] Figure 8 A flowchart of an adaptive method for fixing and calipering multiple calipers according to an embodiment of the present invention is shown.

[0034] like Figure 8 As shown, this embodiment of the invention provides a method for fixing and calibrating adaptive calipers, wherein the method includes:

[0035] A caliper fixed jaw support end and a movable support end unit for the tail of the caliper body are provided on a caliper fixed jaw support base. The movable support end unit for the tail of the caliper body includes a base and a movable component provided on the base. The movable component is provided with the caliper tail support end.

[0036] The caliper fixing jaws and the tail of the caliper body to be calibrated are respectively set on the caliper fixing jaw support end and the caliper tail support end;

[0037] The movable component moves toward the caliper fixing jaw to press the caliper fixing jaw and the tail of the caliper body.

[0038] The caliper push-pull button fixing unit is set on the base to fix the caliper push-pull button;

[0039] A depth gauge calibration unit is mounted on the base. The depth gauge calibration unit includes a gauge block and a first drive mechanism disposed below the gauge block.

[0040] The first driving mechanism is used to drive the gauge block to move in the scale direction and to move the gauge block away from or towards the caliper depth gauge, so that the tail of the caliper scale contacts the left end measuring surface of the gauge block, and the caliper depth gauge contacts the measuring reference surface of the gauge block adjacent to the left end measuring surface of the gauge block.

[0041] The caliper's fixed jaw support base and the movable support end unit at the tail of the caliper together constitute the fixing mechanism to secure 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 body within the plane of the caliper); 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.

[0042] Through the above technical solution, when fixing calipers of different lengths, the tail support unit can change the support position according to the different lengths of the measuring instruments, and can also clamp and fix the caliper body, so as to realize the calibration of the depth gauge in the same set of tooling. This eliminates the problem in the existing technology that the measuring instrument fixing mechanism cannot efficiently and completely fit with the end of the measuring instrument, causing slippage, which in turn leads to insufficient measuring force and excessive calibration size, thus improving the verification and calibration accuracy.

[0043] According to one embodiment of the present invention, the method further includes: setting the linear guide rail on the base, and the movable component moving along the linear guide rail.

[0044] According to one embodiment of the present invention, the movable support end unit at the tail of the ruler further includes a second driving mechanism, which drives the movable component to move.

[0045] According to one embodiment of the present invention, the second drive mechanism is a linear motor.

[0046] According to one embodiment of the present invention, 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 against the caliper push-pull button.

[0047] According to one embodiment of the present invention, a plurality of the elastic thrust pins are arranged in a rectangular or circular array.

[0048] 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.

[0049] According to one embodiment of the present invention, the elastic thrust needle includes a needle body and a spring disposed on the needle body, wherein the spring enables the expansion and contraction of the needle body.

[0050] According to one embodiment of the present invention, the depth gauge calibration unit further includes a mounting base, on which the gauge block and the first drive mechanism are mounted. The motor of the first drive mechanism drives the gauge block to move in the direction of the gauge body, and the displacement transmission component of the first drive mechanism drives the gauge block to move away from or closer to the caliper depth gauge.

[0051] pass Figure 8 The steps in can be obtained Figure 1 and 2 The system shown in the figure enables the fixing and calibration of calipers.

[0052] like Figure 1 As 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).

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] According to one embodiment of the present invention, the second drive mechanism is a linear motor.

[0058] 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.

[0059] 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.

[0060] According to one embodiment of the present invention, a plurality of the elastic thrust pins are arranged in a rectangular or circular array.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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).

[0066] 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.

[0067] The adaptive multi-caliper fixing and calibration system and method described in this invention have been experimentally verified and have 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.

[0068] Therefore, it is evident that after using the adaptive caliper fixing and calibration system and method 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 for automated and intelligent verification and calibration of measuring instruments, making it possible to significantly improve verification and calibration efficiency.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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. A method for fixing and calibrating adaptive calipers, characterized in that, The method includes: A caliper fixed jaw support end and a movable support end unit for the tail of the caliper body are provided on a caliper fixed jaw support base. The movable support end unit for the tail of the caliper body includes a base and a movable component provided on the base. The movable component is provided with the caliper tail support end. The caliper fixing jaws and the tail of the caliper body to be calibrated are respectively set on the caliper fixing jaw support end and the caliper tail support end; The movable component moves toward 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; A depth gauge calibration unit is mounted on the base. The depth gauge calibration unit includes a gauge block and a first drive 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 move the gauge block away from or towards the caliper depth gauge, so that the tail of the caliper scale contacts the left end measuring surface of the gauge block, and the caliper depth gauge contacts the measuring reference surface of the gauge block adjacent to the left end measuring surface of the gauge block.

2. The method according to claim 1, characterized in that, The method further includes: setting the linear guide rail on the base, and moving the movable component along the linear guide rail.

3. The method according to claim 2, characterized in that, The movable support end unit at the tail of the ruler also includes a second drive mechanism, which drives the movable component to move.

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

5. The method according to claim 1, characterized in that, 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 into the caliper push-pull button.

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

7. The method 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 method according to any one of claims 1-7, characterized in that, The depth gauge calibration unit also includes a mounting base on which the gauge block and the first drive mechanism are mounted. The motor of the first drive mechanism drives the gauge block to move in the direction of the gauge body, and the displacement transmission component of the first drive mechanism drives the gauge block to move away from or closer to the caliper depth gauge.

Images