Caliper cascade crank accessory

Abstract

The caliper cascade crank accessory comprises a connecting seat with a U-shaped cross section, a notch of the connecting seat faces one clamping jaw of a caliper and is fixedly sleeved on the clamping jaw, and a reference surface on the notch side of the connecting seat is coplanar with a measuring surface of the clamping jaw connected to the caliper. A multi-stage yoke plate assembly is fixed to the end, away from the caliper, of the connecting base in an angle adjustable mode, and the plate face, on the same side with the datum plane, of the multi-stage yoke plate assembly is coplanar with the datum plane. According to the utility model, the problems that the measurement difficulty is high, the accumulated error is large and the distance between two non-parallel planes cannot be measured in the traditional measurement mode are solved, the irregular point-surface distance and the spatial non-coplanar edge distance can be measured simultaneously, the measurement of the overall dimension is economical, simple and convenient, the original measurement precision can be maintained, segmented measurement is not needed, and the measurement efficiency is improved. The measurement precision is improved, the measurement difficulty is reduced, the application range of caliper measurement is expanded, and the application value is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of measurement, and in particular relates to a caliper cascade crank accessory. Background Art

[0002] Aircraft instruments are installed in limited space in the cabin, and their dimensions are subject to relatively strict requirements. Aircraft instruments are typically not rectangular, so some required dimensions cannot be measured directly with a caliper. To measure these dimensions, additional steps are generally required: segmented measurement using tools such as gauge blocks; and calculations based on predetermined formulas. When the number of segmented measurements is large or the calculation formula is complex, the accumulated error is often an order of magnitude higher than the accuracy of the caliper itself.

[0003] The disadvantages of the conventional measurement process are: ① A large number of tools are used, and the tools need to be kept fixed in position when arranged, which inevitably produces errors. A large number of segments will cause greater accumulated errors; ② When measuring the point-to-surface distance, the measuring surface of one measuring outer jaw of the caliper is close to the measuring point, and the measuring surface of the other measuring outer jaw of the caliper cannot contact the measuring plane to be measured, that is, the length of the measuring outer jaw of the caliper is often less than the translation distance from the aligned measuring point to the measuring plane. In this case, the point-to-surface distance cannot be measured by conventional methods; ③ When measuring the distance between two non-parallel long edges in space, even if the length of one measuring outer jaw of the caliper is sufficient, it is still difficult to simultaneously keep close to the measuring surfaces of the two measuring outer jaws when the two measuring surfaces of the measuring outer jaws cannot rotate relative to each other, which inevitably increases the measurement error; Therefore, it is necessary to make improvements to the above problems. Utility Model Content

[0004] The technical problem solved by the utility model is as follows: a cascade crank accessory of a caliper is provided, which provides conditions for extending the measuring surface of one of the jaws of the caliper by means of a connecting seat which is detachably fixed on one of the jaws of the caliper and whose reference surface is coplanar with the measuring surface of the jaw, and realizes extension and angle adjustment of the measuring surface of one of the jaws of the caliper by installing a multi-cascade plate assembly in an angle-adjustable manner on the connecting seat, thereby solving the problems of measurement difficulty and large accumulated errors of traditional measurement methods and inability to measure the distance between two non-parallel planes, and can simultaneously measure irregular point-surface distances and components of non-coplanar edge distances in space, making it economical and simple to measure outer dimensions, and maintaining the original measurement accuracy, without the need for segmented measurement, thereby improving measurement accuracy, reducing measurement difficulty, and expanding the application range of caliper measurement, and having great application value.

[0005] The technical solution adopted by the utility model is: a caliper cascade crank accessory, including a connecting seat with a U-shaped cross-section, the connecting seat notch is arranged toward one of the jaws of the caliper and is fixed on the jaw, the reference surface on the notch side of the connecting seat is coplanar with the measuring surface of the jaw connected to the caliper, and the angle of the connecting seat away from the caliper end is adjustable to fix a multi-stage cascade plate assembly, and the plate surface of the multi-stage plate assembly on the same side of the reference surface is coplanar with the reference surface.

[0006] Among them, the connecting seat is provided with an extension plate at one end away from the caliper, the lower end surface of which is coplanar with the connecting seat reference surface, and the corresponding end of the multi-stage plate assembly is fixed on the extension plate in an adjustable angle.

[0007] Furthermore, the multi-stage cascade plate assembly includes multiple cascade plates, one end of the cascade plate is formed with a lower long groove, and the extension plate is adapted in the lower long groove, a stud is fixed on the surface of the extension plate, and the knurled nut is adapted to be connected with the stud set through the through hole on the top surface of the lower long groove, so as to realize the angle-adjustable connection of the cascade plates adjacent to the extension plate on the extension plate; the upper plate surface of the other end of the cascade plate is formed with an upper long groove, and the lower long grooves of the two adjacent cascade plates are adapted to the upper long groove, and the angle-adjustable connection of the two adjacent cascade plates is realized by adapting the stud fixed on the surface of the upper long groove and passing through the through hole on the top surface of the lower long groove with the knurled nut.

[0008] Furthermore, a plurality of knurled screws are threadedly connected to the connecting seat, and the connecting seat is fixedly connected to the clamping claw by the plurality of knurled screws pressed against the clamping claw.

[0009] Furthermore, the knurled nut and the knurled screw are both made of 2Cr13 stainless steel rod.

[0010] Furthermore, the connecting seat and the connecting plate are both made of CrWMn high carbon alloy tool steel.

[0011] The advantages of this utility model compared with the prior art are:

[0012] 1. This technical solution provides conditions for extending the measuring surface of one of the caliper jaws by providing a connecting seat that is detachably fixed to one of the caliper jaws and whose reference surface is coplanar with the measuring surface of the jaw;

[0013] 2. This technical solution achieves the extension and angle adjustment of one of the caliper's jaw measuring surfaces by installing a multi-stage cascade plate assembly on the connecting seat in an angle-adjustable manner. This solves the problems of traditional measurement methods, such as measurement difficulty, large accumulated errors, and the inability to measure the distance between two non-parallel planes. It can simultaneously measure the distance between irregular points and surfaces and the distance between non-coplanar edges in space.

[0014] 3. This technical solution has a simple structure and is easy to assemble and disassemble, making it economical and convenient to measure the outer dimensions while maintaining the original measurement accuracy. There is no need for segmented measurement, which improves measurement accuracy, reduces measurement difficulty, expands the application range of caliper measurement, and has great application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the utility model. DETAILED DESCRIPTION

[0016] The following is a combination of the embodiments of the present invention Figure 1 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0017] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate positions or relationships based on those shown in the accompanying drawings. These are intended only to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0019] Caliper cascade crank attachment, such as Figure 1As shown, it includes a connecting base 1 with a U-shaped cross-section, the connecting base 1 having a notch facing one of the jaws of the caliper and being fitted and fixed on the jaw, the reference surface 2 on the notch side of the connecting base 1 being coplanar with the measuring surface of the jaw connected to the caliper, the connecting base 1 having a multi-stage plate assembly 3 fixed at an angle adjustable at one end away from the caliper, and the plate surface of the multi-stage plate assembly 3 on the same side as the reference surface 2 being coplanar with the reference surface 2; in the above structure, by detachably fixing the connecting base 1 on one of the jaws of the caliper and with the reference surface 2 being coplanar with the measuring surface of the jaw, conditions are provided for extending the measuring surface of one of the jaws of the caliper;

[0020] The end of the connecting seat 1 away from the caliper is provided with an extension plate 5 whose lower end surface is coplanar with the reference surface of the connecting seat 1, and the corresponding end of the multi-stage plate assembly 3 is fixed on the extension plate 5 in an angle-adjustable manner.

[0021] The specific structure of the multi-stage cascade plate assembly 3 is as follows: the multi-stage cascade plate assembly 3 includes multiple connecting plates 4, one end of the connecting plate 4 is formed with a lower long groove 6, and the extension plate 5 is adapted to the lower long groove 6, the surface of the extension plate 5 is fixed with a stud 7, and the knurled nut 8 is adapted to be connected with the stud 7 set through the through hole on the top surface of the lower long groove 6, so as to realize the angle-adjustable connection of the connecting plate 4 adjacent to the extension plate 5 on the extension plate 5. When adjusting, loosen the knurled nut 8, adjust the angle of the connecting plate 4 to the measured optimal position, and then tighten the knurled nut 8; the upper plate surface of the other end of the connecting plate 4 is formed with an upper long groove 9, and the lower long grooves 6 of two adjacent connecting plates 4 are adapted to the upper long groove 9, and are adapted to be connected by the stud 7 fixed on the groove surface of the upper long groove 9 and passing through the through hole on the top surface of the lower long groove 6 and the knurled nut 8. The connection is made by connecting the two adjacent connecting plates 4 to achieve an angle-adjustable connection; specifically, a plurality of knurled screws 10 are threadedly connected to the connecting seat 1, and the connecting seat 1 is fixedly connected to the claw by a plurality of knurled screws 10 that are pressed against the claw; in the above structure, the multi-stage connecting plate assembly 3 is installed on the connecting seat 1 in an angle-adjustable manner, so as to achieve the extension and angle adjustment of the measuring surface of one of the claws of the caliper, thereby solving the problems of measurement difficulty and large accumulated errors of traditional measurement methods and the inability to measure the distance between two non-parallel planes, and can simultaneously measure irregular point-to-surface distances and spatial non-coplanar edge distances of components; the design of the upper long groove 9 and the lower long groove 6 are both positioned to ensure that after the multiple connecting plates 4 are connected, their lower end faces are coplanar with the reference surface 2 of the connecting seat 1, thereby achieving the precise extension of the measuring surface of the claw.

[0022] The knurled nut 8 and the knurled screw 10 are both made of 2Cr13 stainless steel rods; specifically, the connecting seat 1 and the connecting plate 4 are both made of CrWMn high carbon alloy tool steel.

[0023] The measurement process is:

[0024] 1) Check that the reference surface 2 of the caliper cascade crank attachment and the measuring surface of the caliper measuring jaws meet the coplanarity requirement;

[0025] 2) Smoothly rotate the cascaded connecting plate 4 with appropriate tightness;

[0026] 3) Place the measuring surface of the outer jaw of the caliper equipped with the caliper cascade crank attachment and the measuring surface of the outer jaw of the other caliper close to the workpiece;

[0027] 4) Read the caliper reading and record it;

[0028] 5) After the measurement is completed, remove the caliper cascade crank attachment;

[0029] This technical solution has a simple structure and is easy to assemble and disassemble. It can meet the measurement needs equivalent to a combination of multiple tools, simplify the measurement process, make the measurement of external dimensions economical and simple, and maintain the original measurement accuracy. There is no need for segmented measurement, which improves the measurement accuracy, reduces the measurement difficulty, and has great application value.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0031] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Caliper cascade crank attachment, characterized by: The invention comprises a connecting seat (1) having a U-shaped cross-section, wherein a notch of the connecting seat (1) is arranged toward one of the jaws of the caliper and is fixedly mounted on the jaw, a reference surface (2) on the notch side of the connecting seat (1) and a measuring surface of the jaw connected to the caliper are coplanar, and a multi-stage plate assembly (3) is fixed in an angle-adjustable manner to one end of the connecting seat (1) away from the caliper, and the plate surface of the multi-stage plate assembly (3) on the same side as the reference surface (2) is coplanar with the reference surface (2).

2. The caliper cascade crank attachment according to claim 1, characterized in that: An extension plate (5) whose lower end surface is coplanar with a reference surface of the connection seat (1) is provided at one end of the connection seat (1) away from the caliper, and the corresponding end of the multi-stage plate assembly (3) is fixed on the extension plate (5) in an angle-adjustable manner.

3. The caliper cascade crank attachment according to claim 1 or 2, characterized in that: The multi-stage cascade plate assembly (3) comprises a plurality of cascade plates (4), one end of the cascade plate (4) is formed with a lower long groove (6), and the extension plate (5) is adapted to fit in the lower long groove (6), a stud (7) is fixed on the plate surface of the extension plate (5), and a knurled nut (8) is adapted to connect with the stud (7) passing through the through hole on the top surface of the lower long groove (6), so as to achieve an angle-adjustable connection of the cascade plates (4) adjacent to the extension plate (5) on the extension plate (5); an upper long groove (9) is formed on the plate surface of the other end of the cascade plate (4), and the lower long grooves (6) of two adjacent cascade plates (4) are adapted to the upper long groove (9), and the angle-adjustable connection of the two adjacent cascade plates (4) is achieved by adapting the stud (7) fixed on the groove surface of the upper long groove (9) and passing through the through hole on the groove top surface of the lower long groove (6) and the knurled nut (8).

4. The caliper cascade crank attachment according to claim 3, characterized in that: The connecting seat (1) is threadedly connected with a plurality of knurled screws (10), and the connecting seat (1) is fixedly connected to the clamping claw by the plurality of knurled screws (10) pressed against the clamping claw.

5. The caliper cascade crank attachment according to claim 4, characterized in that: The knurled nut (8) and the knurled screw (10) are both made of 2Cr13 stainless steel bars.

6. The caliper cascade crank attachment according to claim 5, characterized in that: The connecting seat (1) and the connecting plate (4) are both made of CrWMn high-carbon alloy tool steel.

Images