Self-adaptive multi-degree-of-freedom motion gauge block mounting seat and measuring tool verification and calibration device
By designing a measuring block mount that adapts to multi-degree-of-freedom motion in the measuring gauge automatic calibration system, the problem that the measuring block cannot be fully fitted with the measuring gauge is solved, high-precision measuring gauge calibration and calibration are achieved, and the accuracy requirements of automated calibration are met .
Patent Information
- Application Number
- CN202310720180.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-18
- Publication Date
- 2024-12-20
AI Technical Summary
In the existing automatic calibration system of measuring tools, the measuring block cannot generate rotational motion of multiple degrees of freedom, resulting in the measuring block not parallel to the measuring surface of the measuring tool, resulting in large reading errors and calibration errors, which cannot meet the needs of automated calibration and calibration.
A mount for measuring blocks adapted to multi-degree of freedom movement is designed, including a pressing point rotation unit, a fixing unit, a mount fixing bracket, a mount base, a mount base adapter, a sliding unit, and a tooling overall base With the bottom fixed seat, the measuring block base slides freely in the plane of the overall base of the tooling under the action of the sliding unit. Combined with the rotation of the pressure point, it realizes the multi-degree of freedom movement of the measuring block body, ensuring that the measuring block and the measuring tool are fully fitted.
Through the design of the measuring block mount, the measuring block can correct the rotational movement in accordance with the skew direction, which improves the accuracy of measuring gauge verification and calibration. The experimental results show that the repeatability is less than 0.003mm, and the measurement uncertainty introduced by the measuring block fitting factor is employed. Less than 0.002mm, meeting calibration requirements.
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Figure CN119164262A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of measuring tool verification and calibration, and in particular to a self-adaptive multi-degree-of-freedom motion gauge block mounting seat and a measuring tool verification and calibration device. Background Art
[0002] For the verification and calibration of measuring tools, the gauge block is used as a standard to provide the theoretical true value of the process. The inspector uses the measuring tool to measure the length of the gauge block, and then subtracts the center length value of the gauge block from the reading value to obtain the indication error of the measuring tool.
[0003] In the current automated calibration system for measuring tools, the gauge block is fixed on the tooling, and cannot generate multi-degree-of-freedom rotational motion that conforms to the angle correction direction of the gauge block. Therefore, since the current gauge block is directly and rigidly fixed on the workbench and cannot move freely, when the caliper clamps the gauge block, the gauge block cannot fit completely with the caliper, which will cause reading errors. In other words, when the measuring surface of the gauge is not parallel to the gauge block, the error of verification and calibration is large, which cannot meet the automated verification and calibration requirements of the gauge. Summary of the invention
[0004] The invention provides a gauge block mounting seat with self-adaptive multi-degree-of-freedom motion and a measuring tool verification and calibration device, which can solve the problems in the prior art.
[0005] The present invention provides a gauge block mounting seat with adaptive multi-degree-of-freedom motion, wherein the gauge block mounting seat includes a pressure point rotation unit, a fixing unit, a gauge block fixing bracket, a gauge block base, a gauge block base adapter, a sliding unit, a tooling overall base and a bottom fixing seat, one end of the gauge block body is arranged on the gauge block base through the fixing unit and the gauge block fixing bracket, the gauge block base adapter is arranged below the gauge block base and sequentially passes through the sliding unit and the tooling overall base to be connected to the bottom fixing seat, the other end of the gauge block body is connected to the tooling overall base through the fixing unit and the pressure point rotation unit, wherein the gauge block base slides freely in the plane of the tooling overall base under the action of the sliding unit, there is a pressing force between the gauge block body and the pressure point rotation unit, and the pressure point forms a rotation torque center to make the gauge block body rotate around the pressure point.
[0006] Preferably, the sliding unit comprises a sliding intermediate plate and a ball or a needle roller, and a groove adapted to the ball or the needle roller is provided at the bottom of the sliding intermediate plate.
[0007] Preferably, the gauge block fixing bracket is L-shaped, the short side of the gauge block fixing bracket is connected to the gauge block body through the fixing unit, and the long side of the gauge block fixing bracket is provided with a slot, which is clamped with the gauge block base and the gauge block body through the slot.
[0008] Preferably, the pressure point rotation unit is L-shaped, the short side of the pressure point rotation unit is connected to the gauge block body through the fixing unit, and the long side of the pressure point rotation unit is connected to the overall tooling base.
[0009] Preferably, the tooling overall base is provided with side walls.
[0010] Preferably, the fixing unit is a screw.
[0011] Preferably, the gauge block mounting seat is made of metal.
[0012] Preferably, the metal is stainless steel and / or aluminum alloy.
[0013] The present invention also provides a measuring tool verification and calibration device, wherein the device comprises a gauge block body and the above-mentioned self-adaptive multi-degree-of-freedom motion gauge block mounting seat.
[0014] Through the above technical scheme, the gauge block body can be set in the gauge block mounting seat. When the measuring tool to be verified and calibrated clamps the gauge block body, the gauge block body can generate multiple degrees of freedom and conform to the angle correction rotational movement in the deflection direction of the gauge block body, so as to smoothly fit the measuring tool to be verified and calibrated, thereby improving the verification and calibration accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] 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.
[0016] Figure 1 An exploded view of an adaptive multi-degree-of-freedom motion gauge block mounting seat according to an embodiment of the present invention is shown;
[0017] Figure 2 An overall schematic diagram of an adaptive multi-degree-of-freedom motion gauge block mounting seat according to an embodiment of the present invention is shown;
[0018] Figure 3A and 3B Shows a top view and a bottom view of a tooling overall base according to an embodiment of the present invention;
[0019] Figure 4A and 4B shows a top view and a bottom view of a sliding unit according to an embodiment of the present invention;
[0020] Figure 5A and 5BShows a top view and a bottom view of a gauge block base according to an embodiment of the present invention;
[0021] Figure 6 A schematic diagram of a bottom fixing base according to an embodiment of the present invention is shown;
[0022] Figure 7 A schematic diagram of a gauge block base adapter according to an embodiment of the present invention is shown. DETAILED DESCRIPTION
[0023] 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.
[0024] 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.
[0025] 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.
[0026] Figure 1 An exploded view of an adaptive multi-degree-of-freedom motion gauge block mounting seat according to an embodiment of the present invention is shown.
[0027] Figure 2 An overall schematic diagram of an adaptive multi-degree-of-freedom motion gauge block mounting seat according to an embodiment of the present invention is shown.
[0028] like Figure 1 and 2 As shown, an embodiment of the present invention provides a gauge block mounting seat with adaptive multi-degree-of-freedom motion, wherein the gauge block mounting seat includes a pressure point rotation unit 1, a fixing unit 2, a gauge block fixing bracket 3, a gauge block base 5, a gauge block base adapter 6, a sliding unit, a tooling overall base 9 and a bottom fixing seat 10, one end of the gauge block body 4 is arranged on the gauge block base 5 through the fixing unit 2 and the gauge block fixing bracket 3, the gauge block base adapter 6 is arranged below the gauge block base 5 and passes through the sliding unit and the tooling overall base 9 in sequence to be connected to the bottom fixing seat 10, the other end of the gauge block body 4 is connected to the tooling overall base 9 through the fixing unit 2 and the pressure point rotation unit 1, wherein the gauge block base 5 slides freely in the plane of the tooling overall base 9 under the action of the sliding unit, there is a pressing force between the gauge block body 4 and the pressure point rotation unit 1, and the pressure point forms a rotation torque center to make the gauge block body 4 rotate around the pressure point.
[0029] That is, by allowing the gauge block base to slide freely within the plane of the overall base of the tooling, the slider body can be driven to slide freely within the plane of the overall base of the tooling. Combined with the rotation of the gauge block body around the pressure point, multi-degree-of-freedom movement of the gauge block body can be achieved, solving the problem that the gauge block body cannot fit the measuring surface of the measuring tool, thereby achieving the effect of improving measurement accuracy.
[0030] Through the above technical scheme, the gauge block body can be set in the gauge block mounting seat. When the measuring tool to be verified and calibrated clamps the gauge block body, the gauge block body can generate multiple degrees of freedom and conform to the angle correction rotational movement in the deflection direction of the gauge block body, so as to smoothly fit the measuring tool to be verified and calibrated, thereby improving the verification and calibration accuracy.
[0031] For example, the width of the gauge block body 4 is 9 mm (eg Figure 1 As shown, the vertical direction y is the height of the pressure block body 4, the horizontal direction x is the length of the pressure block body 4, and the normal direction z is the width of the pressure block body 4). The position of the pressure point is on the center line of the 9mm width surface of the gauge block body 4 (on the center line of the 9mm wide side), that is, the pressure point is 4.5mm away from both sides; at the same time, the distance between the pressure point and the measuring surface of the gauge block body is preferably not more than 30mm.
[0032] According to an embodiment of the present invention, Figure 4A and 4BAs shown, the sliding unit includes a sliding intermediate plate 7 and a ball or needle roller 8. A groove adapted to the ball or needle roller 8 is provided at the bottom of the sliding intermediate plate 7.
[0033] Taking the ball as an example, the diameter of the groove at the bottom of the sliding intermediate plate can be slightly larger than the diameter of the ball, but the depth of the groove can be smaller than the diameter of the ball (i.e., ensure that the ball protrudes from the lower surface of the sliding intermediate plate after being placed in the groove). For example, the number of grooves can be four (e.g. Figure 4A and 4B As shown), accordingly, the number of balls can also be four, and the balls can be steel balls.
[0034] By arranging a sliding intermediate plate and a ball or needle between the gauge block base and the tooling overall base, the friction force is reduced. Therefore, the gauge block base can slide freely in any direction in the plane within the tooling overall base.
[0035] Among them, the top view and bottom view of the gauge block base are as follows Figure 5A and Figure 5B shown.
[0036] According to an embodiment of the present invention, Figure 2 As shown, the gauge block fixing bracket 3 is L-shaped, the short side of the gauge block fixing bracket 3 is connected to the gauge block body 4 through the fixing unit 2, and the long side of the gauge block fixing bracket 3 is provided with a card slot, which is card-connected with the gauge block base 5 and the gauge block body 4 through the card slot.
[0037] Thus, the gauge block body can be fixed on the gauge block base through the gauge block fixing bracket.
[0038] According to an embodiment of the present invention, continue to refer to Figure 2 The pressure point rotation unit 1 is L-shaped, the short side of the pressure point rotation unit 1 is connected to the gauge block body 4 through the fixing unit 2, and the long side of the pressure point rotation unit 1 is connected to the overall tooling base 9.
[0039] According to an embodiment of the present invention, Figure 3A and 3B As shown, the tooling overall base 9 is provided with side walls.
[0040] in, Figure 3A This is a top view of the overall base of the tooling. Figure 3B This is a bottom view of the overall base of the tooling.
[0041] Therefore, the limitation of the side wall of the tooling overall base can ensure that the gauge block base will not slide out of the plane range of the tooling overall base.
[0042] According to an embodiment of the present invention, the fixing unit 2 is a screw.
[0043] According to an embodiment of the present invention, the material of the gauge block mounting seat is metal.
[0044] According to an embodiment of the present invention, the metal is stainless steel and / or aluminum alloy.
[0045] 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.
[0046] In the present invention, the enlarged views of the bottom fixing seat and the gauge block base adapter are respectively as shown in Figure 6 and 7 shown.
[0047] An embodiment of the present invention further provides a measuring tool verification and calibration device, wherein the device includes a gauge block body and the self-adaptive multi-degree-of-freedom gauge block mounting seat described in the above embodiment.
[0048] Through the above technical solution, when the measuring tool to be verified and calibrated clamps the gauge block body, the gauge block body can generate multi-degree-of-freedom and angular correction rotational movement in accordance with the deflection direction of the gauge block body, thereby smoothly fitting the measuring tool to be verified and calibrated, thereby improving the verification and calibration accuracy.
[0049] The gauge block mounting seat and the gauge verification and calibration device of the present invention have been experimentally verified to obtain good measurement repeatability and accuracy. In the caliper calibration experiment, the experimental group used 4 groups, 10 repeatability measurements in each group, and the verification results showed that the overall repeatability of the system was less than 0.003mm, and the measurement uncertainty component introduced by the gauge block and the fitting factor of the gauge block was less than or better than 0.002mm, meeting the requirements of caliper verification and calibration.
[0050] It can be seen from the above embodiments that the gauge block mounting seat and the measuring tool verification and calibration device described in the present invention have at least the following advantages: the indicators meet the use requirements and the feasibility is relatively high; the gauge block mounting seat and the gauge block with adaptive multi-degree-of-freedom motion provide a high-precision verification benchmark for the entire system. When the measuring tool clamps the gauge block, the gauge block can generate multi-degree-of-freedom and angle-corrected rotational motion in accordance with the deflection direction of the gauge block, thereby smoothly fitting the measuring tool and improving the verification and calibration accuracy.
[0051] 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.
[0052] 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.
[0053] 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.
[0054] 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 gauge block mounting seat for adaptive multi-degree-of-freedom motion, characterized in that: The gauge block mounting seat comprises a pressure point rotation unit (1), a fixing unit (2), a gauge block fixing bracket (3), a gauge block base (5), a gauge block base adapter (6), a sliding unit, a tooling overall base (9) and a bottom fixing seat (10); one end of the gauge block body (4) is arranged on the gauge block base (5) through the fixing unit (2) and the gauge block fixing bracket (3); the gauge block base adapter (6) is arranged below the gauge block base (5) and passes through the sliding unit and the tooling overall base in sequence. The body base (9) is connected to the bottom fixed base (10), and the other end of the gauge block body (4) is connected to the tooling overall base (9) through the fixing unit (2) and the pressure point rotation unit (1), wherein the gauge block base (5) slides freely in the plane of the tooling overall base (9) under the action of the sliding unit, and there is a clamping force between the gauge block body (4) and the pressure point rotation unit (1), and the pressure point forms a rotation torque center to make the gauge block body (4) rotate around the pressure point.
2. The gauge block mounting seat according to claim 1, characterized in that: The sliding unit comprises a sliding intermediate plate (7) and a ball or a needle roller (8), and a groove adapted to the ball or the needle roller (8) is arranged at the bottom of the sliding intermediate plate (7).
3. The gauge block mounting seat according to claim 2, characterized in that: The gauge block fixing bracket (3) is L-shaped, the short side of the gauge block fixing bracket (3) is connected to the gauge block body (4) via the fixing unit (2), and the long side of the gauge block fixing bracket (3) is provided with a clamping groove, which is clamped with the gauge block base (5) and the gauge block body (4) via the clamping groove.
4. The gauge block mounting seat according to claim 3, characterized in that: The pressure point rotation unit (1) is L-shaped, the short side of the pressure point rotation unit (1) is connected to the gauge block body (4) via the fixing unit (2), and the long side of the pressure point rotation unit (1) is connected to the overall tooling base (9).
5. The gauge block mounting seat according to any one of claims 1 to 4, characterized in that: The tool overall base (9) is provided with a side wall.
6. The gauge block mounting seat according to any one of claims 1 to 4, characterized in that: The fixing unit (2) is a screw.
7. The gauge block mounting seat according to any one of claims 1 to 4, characterized in that: The material of the gauge block mounting seat is metal.
8. The gauge block mounting seat according to claim 7, characterized in that: The metal is stainless steel and / or aluminum alloy.
9. A measuring tool verification and calibration device, characterized in that: The device comprises a gauge block body and an adaptive multi-degree-of-freedom motion gauge block mounting seat as described in any one of claims 1-8.