Calibration tooling

Abstract

A calibration tool provided by the present invention relates to the technical field of measuring tools, and to optimize the calibration tool to a certain extent and improve the detection efficiency of the compression amount of the shock absorber block of the shipborne generator. The calibration tool provided by the present invention includes a calibration block and a base block. The calibration block is connected to the base block, and the calibration block can rotate relative to the base block; the calibration block includes at least a first calibration edge, a second calibration edge, and a third calibration edge, and the size of the first calibration edge is smaller than the size of the second calibration edge, and the size of the second calibration edge is smaller than the size of the third calibration edge.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring tools, and particularly relates to a calibration tooling. Background Art

[0002] At present, many generators used in dual-fuel ships are provided with shock-absorbing blocks at the positions connected to the base to ensure the normal use of high-power generators. To check whether the shock-absorbing blocks can buffer the vibration of the generator, it is necessary to measure the compression amount of the shock-absorbing blocks after installation and after using for a certain period of time. If the shock-absorbing block exceeds the corresponding range, the shock-absorbing block needs to be replaced in time to avoid different shock-absorbing effects at various positions of the generator, resulting in damage to the generator.

[0003] Currently, the measurement of the compression amount of the shock-absorbing block mainly relies on a scale structure such as a steel ruler for measurement. Not only is the speed slow, but also the visual measurement is greatly limited by the angle and position, making the construction difficult and resulting in extremely low measurement efficiency.

[0004] Therefore, there is an urgent need to provide a calibration tooling to solve the problems existing in the prior art to a certain extent. Summary of the Invention

[0005] The purpose of the present invention is to provide a calibration tooling to optimize the calibration tooling to a certain extent and improve the detection efficiency of the compression amount of the shock-absorbing block of the shipborne generator.

[0006] A calibration tooling provided by the present invention includes a calibration block and a base block. The calibration block is connected to the base block, and the calibration block can rotate relative to the base block. The calibration block at least includes a first calibration edge, a second calibration edge, and a third calibration edge, and the size of the first calibration edge is smaller than the size of the second calibration edge, and the size of the second calibration edge is smaller than the size of the third calibration edge.

[0007] Wherein, the calibration block has a rectangular body structure, and a notch portion is formed at one corner of the calibration block to form the first calibration edge. The first calibration edge is adjacent to the second calibration edge, the second calibration edge is adjacent to the third calibration edge, and the third calibration edge is opposite to the first calibration edge.

[0008] Specifically, a receiving portion is formed at the center of the calibration block, and the base block is disposed in the receiving portion.

[0009] Furthermore, a plurality of clamping grooves are formed on the inner wall surface of the receiving portion, and a plurality of resilient clamping members are distributed along the circumferential direction of the outer wall surface of the base block. After the resilient clamping members are aligned with the clamping grooves, they can be snapped into the clamping grooves.

[0010] Further, the number of the clamping grooves is at least three, and the included angle formed by the line connecting the center of the first clamping groove and the center of the accommodating part and the line connecting the center of the second clamping groove and the center of the accommodating part is 90°, the included angle formed by the line connecting the center of the second clamping groove and the center of the accommodating part and the line connecting the center of the third clamping groove and the center of the accommodating part is 90°, and the included angle formed by the line connecting the center of the third clamping groove and the center of the accommodating part and the line connecting the center of the first clamping groove and the center of the accommodating part is 180°.

[0011] Wherein, a guiding groove is formed on the inner wall surface of the accommodating part, and the guiding groove extends along the circumferential direction of the accommodating part; at least one limiting part is formed on the outer wall surface of the base block, and the limiting part can be inserted into the guiding groove.

[0012] Specifically, the number of the limiting parts is multiple, the multiple limiting parts are arranged at intervals along the circumferential direction of the base block, and are arranged at intervals with the resilient clamping member.

[0013] Wherein, the calibration block includes a first calibration piece and a second calibration piece, and the first calibration piece and the second calibration piece are detachably connected.

[0014] Specifically, positioning holes are formed at the edges of the first calibration piece and the second calibration piece, and fasteners are arranged in the positioning holes to detachably connect the first calibration piece and the second calibration piece.

[0015] Further, holding recesses are formed on both side surfaces of the base block, and the centers of the holding recesses on both sides are located on the same straight line.

[0016] Compared with the prior art, the calibration tooling provided by the present invention has the following advantages:

[0017] The calibration tooling provided by the present invention includes a calibration block and a base block, the calibration block is connected to the base block, and the calibration block can rotate relative to the base block; the calibration block at least includes a first calibration edge, a second calibration edge and a third calibration edge, and the size of the first calibration edge is smaller than the size of the second calibration edge, and the size of the second calibration edge is smaller than the size of the third calibration edge. [[ID=]]

[0018] It can be analyzed from this that through the first calibration edge, the second calibration edge and the third calibration edge formed on the calibration block, and making the size of the first calibration edge smaller than the size of the second calibration edge, and the size of the second calibration edge smaller than the size of the third calibration edge, three standard sizes of large, medium and small can be obtained.

[0019] Since the shock-absorbing block is arranged between the base and the generator, during the calibration measurement, start from the first calibration edge of the smallest size, align the first calibration edge with the gap between the generator and the base and extend it into the gap. If the first calibration edge shakes greatly in the gap, align the second calibration edge with the gap between the generator and the base and extend it into the gap. If the second calibration edge still shakes obviously in the gap, align the third calibration edge with the gap between the generator and the base and extend it into the gap. If there is no obvious shaking of the third calibration edge in the gap, it proves that the shock-absorbing block can play a shock-absorbing role. If there is still obvious shaking of the third calibration edge in the gap, it proves that the compression of the shock-absorbing block is small and cannot provide a good shock-absorbing effect for the generator. If the third calibration edge cannot extend into the gap, it proves that the compression of the shock-absorbing block is within the size range of the second calibration edge and the third calibration edge, which can also prove that the shock-absorbing block can have a shock-absorbing effect for the generator.

[0020] Correspondingly, if the second calibration side cannot be extended and there is obvious shaking after the first calibration side is extended, it can also be proved that the shock-absorbing block can play a shock-absorbing effect on the generator.

[0021] It should be noted that since the generator needs to be equipped with multiple shock-absorbing blocks, and in order to ensure that the forces at various positions of the generator and the compression of the shock-absorbing blocks are consistent as much as possible, after the inspection personnel measure the compression of the first shock-absorbing block, the subsequent measurement process of the shock-absorbing blocks needs to use the corresponding calibration edge, that is, when the first shock-absorbing block is inserted using the second calibration edge without shaking, the second calibration edge is used for the measurement of all subsequent shock-absorbing blocks. If there is an obvious inability to insert or the amount of shaking after insertion is large, the shock-absorbing block needs to be adjusted accordingly to ensure the balance of the generator and the consistency of the shock-absorbing effect to a certain extent.

[0022] Since the calibration block and the base block are rotatably connected in the present application, when the calibration side needs to be changed during the measurement process, the calibration block can be directly pushed to rotate relative to the base block, thereby enabling rapid change of the calibration side.

[0023] The calibration tool provided in the present application integrates calibration edges of at least three calibration sizes through the calibration block, and by rotatably connecting the calibration block with the base block, it can achieve rapid conversion of the calibration edges during detection, which can not only reduce the number of calibration tooling, but also improve calibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 Schematic diagram of the decomposition structure of the calibration tooling provided by the embodiment of the present invention;

[0026] Figure 2 Schematic diagram of the structure of the calibration block in the calibration tooling provided by the embodiment of the present invention;

[0027] Figure 3 Schematic diagram of the structure of the base block in the calibration tooling provided by the embodiment of the present invention.

[0028] In the figure: 1 - calibration block; 101 - first calibration piece; 102 - second calibration piece; 103 - notch part; 104 - first calibration edge; 105 - second calibration edge; 106 - third calibration edge; 107 - accommodating part; 108 - clamping groove; 109 - guiding groove; 110 - positioning hole; 2 - base block; 201 - resilient clamping piece; 202 - limiting part. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0030] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is habitually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical", etc. do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the embodiments of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0034] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" can be used herein to describe the relationship between one element and another as shown in the drawings. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0035] The terms used herein are only for describing various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprises", "comprising", and "having" list the stated features, quantities, operations, components, elements, and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0036] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that occur during manufacturing.

[0037] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, as will be apparent after understanding the disclosure of the present application, other configurations are possible. Additionally, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0038] As Figure 1As shown in the figure, the present invention provides a calibration tooling, which includes a calibration block 1 and a base block 2. The calibration block 1 is connected to the base block 2, and the calibration block 1 can rotate relative to the base block 2. The calibration block 1 at least includes a first calibration edge 104, a second calibration edge 105 and a third calibration edge 106, and the size of the first calibration edge 104 is smaller than that of the second calibration edge 105, and the size of the second calibration edge 105 is smaller than that of the third calibration edge 106.

[0039] Compared with the prior art, the calibration tooling provided by the present invention has the following advantages:

[0040] For the calibration tooling provided by the present invention, through the first calibration edge 104, the second calibration edge 105 and the third calibration edge 106 formed on the calibration block 1, and making the size of the first calibration edge 104 smaller than that of the second calibration edge 105, and the size of the second calibration edge 105 smaller than that of the third calibration edge 106, three standard sizes of large, medium and small can be obtained.

[0041] Since the shock-absorbing block is arranged between the base and the generator, during the calibration measurement, starting from the first calibration edge 104 with the smallest size, align the first calibration edge 104 with the gap between the generator and the base and extend it into the gap. If the first calibration edge 104 shakes greatly in the gap, then align the second calibration edge 105 with the gap between the generator and the base and extend it into the gap. If the second calibration edge 105 still shakes significantly in the gap, then align the third calibration edge 106 with the gap between the generator and the base and extend it into the gap. If there is no obvious shake of the third calibration edge 106 in the gap, it proves that the shock-absorbing block can play a shock-absorbing role. If there is still an obvious shake of the third calibration edge 106 in the gap, it proves that the compression amount of the shock-absorbing block is small and cannot provide a good shock-absorbing effect for the generator. If the third calibration edge 106 cannot extend into the gap, it proves that the compression amount of the shock-absorbing block is within the size range of the second calibration edge 105 and the third calibration edge 106, and thus it can also prove that the shock-absorbing block can play a shock-absorbing effect on the generator.

[0042] Correspondingly, if the second calibration edge 105 cannot extend in and there is an obvious shake after the first calibration edge 104 extends in, it can also prove that the shock-absorbing block can play a shock-absorbing effect on the generator.

[0043] It should be noted that since multiple shock absorbers need to be installed on the generator, and in order to ensure as much as possible that the forces at various positions of the generator and the compression amounts of the shock absorbers are consistent, when the inspector measures the compression amount of the first shock absorber, the subsequent measurement process for the shock absorbers needs to use the corresponding calibration edge. That is, when the first shock absorber has no shaking after the second calibration edge 105 is inserted, then the second calibration edge 105 is used for all subsequent shock absorber measurements. If there is an obvious inability to insert or a large shaking amount after insertion, then the shock absorber needs to be adjusted accordingly to ensure the balance of the generator and the consistency of the shock absorption effect to a certain extent.

[0044] Since the calibration block 1 and the base block 2 are rotatably connected in this application, during the measurement process, when it is necessary to change the calibration edge, the calibration block 1 can be directly pushed to rotate relative to the base block 2, thereby enabling the rapid transformation of the calibration edge.

[0045] The calibration tooling provided in this application integrates calibration edges with at least three calibration dimensions on the calibration block 1, and through the rotational connection between the calibration block 1 and the base block 2, it can achieve the rapid conversion of the calibration edge during detection, which can not only reduce the number of calibration toolings but also improve the calibration efficiency.

[0046] It should be supplemented here that in this application, the first calibration edge 104, the second calibration edge 105, and the third calibration edge 106 all ensure the accuracy of the standard dimensions through machining. Moreover, scales and numerical values can be set along the extension direction of the calibration edge at the position of the corresponding calibration edge on the calibration block 1. Thus, in some cases, the specific dimensions of the compression amount of the shock absorber can be obtained, which is more conducive to judging the difference in the compression amounts between multiple shock absorbers. For example, when the second calibration edge 105 is inserted into the gap between the generator and the base and cannot be inserted, one end of the second calibration edge 105 can be aligned with the base, and the edge of the other end can be abutted against the corresponding position of the generator, so that the numerical value of the compression amount of the shock absorber between the generator and the base can be obtained more accurately according to the scale value corresponding to the abutting position.

[0047] Since there may be a certain degree of error in the compression amounts of multiple shock absorbers, and a certain degree of error can be tolerated during actual installation, such as ±2mm, therefore, through the set scale values, it can be judged whether the existing error is within the acceptable range, which can avoid to a certain extent the problem that the shock absorbers that can still function are replaced due to insufficient measurement means, resulting in waste of resources.

[0048] It should be supplemented here that preferably, in this application, the size of the first calibration edge 104 is 33mm, the size of the second calibration edge 105 is 37mm, the size of the third calibration edge 106 is 40mm, and the thickness of the overall tooling is 18mm.

[0049] It can be understood that since at least three calibration edges need to be formed in the present application, therefore, as Figure 1 Combined with Figure 2 shown, preferably, the calibration block 1 in the present application has a rectangular body structure, and a notch 103 is formed at one corner of the calibration block 1 to form a first calibration edge 104, and the first calibration edge 104 is adjacent to the second calibration edge 105, the second calibration edge 105 is adjacent to the third calibration edge 106, and the third calibration edge 106 and the first calibration edge 104 are opposite sides.

[0050] Since a rectangle has two kinds of edges with different sizes, therefore, through the notch 103 formed at one corner of the rectangular calibration edge, the calibration block 1 can have at least three sizes of side lengths, so that the first calibration edge 104, the second calibration edge 105 and the third calibration edge 106 can be formed through the notch 103. That is, when the size of the calibration block 1 in the present application adopts the above preferred size and the notch 103 is square, the size of the fourth edge formed by the notch 103 is 30 mm. If other sizes are required for the fourth edge, the size of the notch 103 can be changed according to the needs, which will not be elaborated here.

[0051] It should be supplemented and explained here that since the first calibration edge 104 and the second calibration edge 105 are adjacent in the present application, and the third calibration edge 106 and the second calibration edge 105 are adjacent, therefore, when it is necessary to change the calibration edge, only one push is required to complete it, and the operation is simple, convenient and fast.

[0052] Optionally, as Figure 1 Combined with Figure 2 shown, a receiving portion 107 is formed at the center of the calibration block 1 in the present application, and the base block 2 is disposed in the receiving portion 107.

[0053] Preferably, the receiving portion 107 in the present application is a perforation that penetrates the calibration block 1 along the thickness direction, so that it is convenient for the operator to hold the base block 2 and realize the rapid rotation of the calibration block 1 relative to the base block 2.

[0054] In addition to the above perforation form, the receiving portion 107 can also adopt the form of a receiving groove. However, when the receiving groove form is adopted, a positioning shaft needs to be provided on the base block 2, and during operation, the tester holds the positioning shaft and pushes the calibration block 1 to realize the rotation of the calibration block 1 relative to the base block 2.

[0055] Optionally, as Figures 1-3 shown, a plurality of clamping grooves 108 are formed on the inner wall surface of the receiving portion 107 in the present application, and on the outer wall surface of the base block 2, and a plurality of resilient clamping members 201 are distributed along the circumferential direction of the base block 2. After the resilient clamping members 201 are aligned with the clamping grooves 108, they can be snapped into the clamping grooves 108.

[0056] Preferably, the resilient engaging member 201 in the present application is spherical. When the calibration block 1 rotates relative to the base block 2, the resilient engaging member 201 disengages from the engaging groove 108 and retracts into the base block 2 under the pressure of the inner wall surface of the receiving portion 107 of the calibration block 1. When rotated to the position of the engaging groove 108 again, the resilient engaging member 201 pops out of the base block 2 and enters the engaging groove 108, thereby realizing the positioning of the calibration block 1 relative to the base block 2 and avoiding excessive rotation of the calibration block 1 to a certain extent.

[0057] It can be understood that since there are three sides for calibration in the present application, namely the first calibration side 104, the second calibration side 105, and the third calibration side 106. Therefore, correspondingly, as Figures 1-3 shown, the number of the engaging grooves 108 in the present application is at least three, and the included angle formed by the line connecting the center of the first engaging groove 108 and the center of the receiving portion 107 and the line connecting the center of the second engaging groove 108 and the center of the receiving portion 107 is 90°, the included angle formed by the line connecting the center of the second engaging groove 108 and the center of the receiving portion 107 and the line connecting the center of the third engaging groove 108 and the center of the receiving portion 107 is 9 °, and the included angle formed by the line connecting the center of the third engaging groove 108 and the center of the receiving portion 107 and the line connecting the center of the first engaging groove 108 and the center of the receiving portion 107 is 180°.

[0058] When the number of the engaging grooves 108 is three, the number of the resilient engaging members 201 can be at least two, so as to ensure that at least one resilient engaging member 201 is located in the engaging groove 108 to realize the positioning of the calibration block 1 relative to the base block 2.

[0059] In the drawings of the present application, the number of the engaging grooves 108 and the resilient engaging members 201 is shown as three. Since the calibration block 1 in the present application is rectangular, it needs to rotate 90° from the first calibration side 104 to the second calibration side 105. Therefore, the above-mentioned setting can make the calibration block 1 have a stagnation effect every time it rotates 90°, thereby prompting the operator that the rotation is in place. And since the number of the resilient engaging members 201 is three, at least two resilient engaging members 201 can be ensured to be engaged with two engaging grooves 108 in a corresponding manner, so as to ensure the stability of the calibration block 1 to a certain extent.

[0060] It can be understood that the number of the engaging grooves 108 in the present application can be four, and the number of the resilient engaging members 201 can be three or four, so as to ensure that each resilient engaging member 201 can be engaged with the engaging groove 108 correspondingly and improve the stability of the overall tooling.

[0061] It should be noted here that the above-mentioned resilient snap member 201 can be composed of a spring and a sphere. A channel for accommodating the spring is formed in the base block 2, and the diameter of the port of the channel is smaller than the diameter of the sphere, so that the sphere can be forced into the channel and protrude from the outer wall surface of the base block 2 at the snap groove 108 to engage with the snap groove 108.

[0062] Optionally, as Figure 1 Combined with Figure 2 As shown, a guiding groove 109 is formed on the inner wall surface of the accommodating portion 107 in the present application, and the guiding groove 109 extends along the circumferential direction of the accommodating portion 107; at least one limiting portion 202 is formed on the outer wall surface of the base block 2, and the limiting portion 202 can be inserted into the guiding groove 109.

[0063] Through the limiting portion 202 formed on the side wall of the base block 2 and in cooperation with the guiding groove 109 formed on the inner wall surface of the accommodating portion 107, the limiting portion 202 can be engaged with the guiding groove 109, so as to realize the stable connection between the calibration block 1 and the base block 2 and avoid the problem of separation between the calibration block 1 and the base block 2 during rotation.

[0064] Optionally, as Figure 3 As shown, the number of the limiting portions 202 in the present application is multiple, and the multiple limiting portions 202 are arranged at intervals along the circumferential direction of the base block 2 and are arranged at intervals from the resilient snap member 201.

[0065] As Figure 3 As shown, the number of the limiting portions 202 in the present application is three. Through the three limiting portions 202, the calibration block 1 and the base block 2 can be stably connected, and the number of the limiting portions 202 can also be two or more than three, so as to improve the connection stability between the calibration block 1 and the base block 2.

[0066] Preferably, as Figure 1 As shown, the calibration block 1 in the present application includes a first calibration piece 101 and a second calibration piece 102, and the first calibration piece 101 and the second calibration piece 102 are detachably connected.

[0067] Since the calibration block 1 in the present application is formed by combining the first calibration piece 101 and the second calibration piece 102, and the first calibration piece 101 and the second calibration piece 102 are detachably connected, when it is necessary to repair the limiting portion 202 or the resilient snap member 201 on the base block 2 or replace the calibration block 1 with other sizes, the first calibration piece 101 and the second calibration piece 102 can be disassembled, so that the base block 2 can be quickly taken out to realize the above operations.

[0068] It can be understood that since the calibration block 1 in the present application is composed of the first calibration piece 101 and the second calibration piece 102, hemispherical grooves and L-shaped grooves are formed on both the first calibration piece 101 and the second calibration piece 102, so as to realize the spherical clamping groove 108 and the U-shaped guiding groove 109 after docking.

[0069] It should be supplemented here that, as Figure 1 shown, positioning holes 110 are formed at the edges of both the first calibration piece 101 and the second calibration piece 102 in the present application, and fasteners are provided in the positioning holes 110 to detachably connect the first calibration piece 101 and the second calibration piece 102. Preferably, the positioning holes 110 in the present application are screw holes, and the fasteners are bolts, so as to realize the rapid disassembly and assembly between the first calibration piece 101 and the second calibration piece 102.

[0070] Preferably, holding recesses are formed on both side surfaces of the base block 2 in the present application, and the centers of the holding recesses on both sides are located on the same straight line.

[0071] Since when the calibration tooling provided in the present application is in use, the operator only needs to pinch the base block 2 with the middle finger and the thumb, and push the calibration block 1 with the index finger to complete the rotation of the calibration block 1 relative to the base block 2. Therefore, in order to enable the operator to better pinch the base block 2, the present application forms holding recesses on both side surfaces of the base block 2, so as to improve the fitting degree between the finger and the base block 2.

[0072] It can be understood that the holding recesses formed on both side surfaces of the base block 2 in the present application can be hemispherical, so as to better fit with the finger pulp, improve the feel during pinching, and improve the pinching stability.

[0073] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, 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 calibration tooling, characterized in that, It includes a calibration block and a base block. The calibration block is connected to the base block, and the calibration block can rotate relative to the base block. The calibration block at least includes a first calibration edge, a second calibration edge, and a third calibration edge, and the size of the first calibration edge is smaller than that of the second calibration edge, and the size of the second calibration edge is smaller than that of the third calibration edge. The calibration block has a rectangular body structure. A notch is formed at a corner of the calibration block to form the first calibration edge. The first calibration edge is adjacent to the second calibration edge, the second calibration edge is adjacent to the third calibration edge, and the third calibration edge is opposite to the first calibration edge. A receiving portion is formed at the center of the calibration block, and the base block is disposed within the receiving portion. A plurality of clamping grooves are formed on the inner wall surface of the receiving portion, and a plurality of resilient clamping members are distributed along the circumferential direction of the outer wall surface of the base block. After the resilient clamping members are aligned with the clamping grooves, they can be inserted into the clamping grooves.

2. The calibration tooling according to claim 1, characterized in that The number of the clamping grooves is at least three. The included angle formed by the line connecting the center of the first clamping groove and the center of the receiving portion and the line connecting the center of the second clamping groove and the center of the receiving portion is 90°. The included angle formed by the line connecting the center of the second clamping groove and the center of the receiving portion and the line connecting the center of the third clamping groove and the center of the receiving portion is 90°. The included angle formed by the line connecting the center of the third clamping groove and the center of the receiving portion and the line connecting the center of the first clamping groove and the center of the receiving portion is 180°.

3. The calibration tooling according to claim 2, characterized in that, A guiding groove is formed on the inner wall surface of the receiving portion, and the guiding groove extends along the circumferential direction of the receiving portion. At least one limiting portion is formed on the outer wall surface of the base block, and the limiting portion can be inserted into the guiding groove.

4. The calibration tooling according to claim 3, wherein The number of the limiting portions is multiple. The multiple limiting portions are arranged at intervals along the circumferential direction of the base block and are arranged at intervals with the resilient clamping members.

5. The calibration tooling according to claim 1, wherein The calibration block includes a first calibration sheet and a second calibration sheet, and the first calibration sheet and the second calibration sheet are detachably connected.

6. The calibration tooling according to claim 5, characterized in that, Positioning holes are formed at the edges of the first calibration sheet and the second calibration sheet, and fasteners are provided in the positioning holes to detachably connect the first calibration sheet and the second calibration sheet.

7. The calibration tooling according to claim 1, characterized in that, Gripping recesses are formed on both side surfaces of the base block, and the centers of the gripping recesses on both sides are located on the same straight line.

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