CN217110709U - Go-no go gauge and go-no go gauge set - Google Patents

Abstract

The application provides a go-no go gauge and go-no go gauge suit. The go-no go gauge includes: the measuring part is provided with a go gauge end and a no-go gauge end, and the outer diameter of the measuring part is gradually increased from the go gauge end to the no-go gauge end; the gauge end extending part extends out of the gauge end along the axis of the measuring part by a first length, and the outer diameter of the gauge end extending part is equal to that of the gauge end; and/or a no-go end extension extending a second length from the no-go end along an axis of the measurement portion, an outer diameter of the no-go end extension being equal to an outer diameter of the no-go end. In the technical scheme of this application embodiment, the external diameter of leading to the no-go gauge increases gradually from leading to the no-go gauge end to be provided with leading to gauge end extension and no-go gauge end extension, thereby can detect the aperture size more high-efficiently, more accurately.

Description

Go-no go gauge and go-no go gauge set

Technical Field

The application relates to the technical field of measuring tools, in particular to a go-no go gauge and a go-no go gauge set.

Background

Go-no-go gauge is a kind of measuring tool. The go-no-go gauge may be used, for example, to detect whether the size of the aperture meets production standards. The go-no-go gauge generally has a go-no-go end and a no-go end, the no-go end being sized according to an upper tolerance limit and the go-no-go end being sized according to a lower tolerance limit. When the hole diameter is detected by using a pass-stop gauge, if the end of the pass-stop gauge can pass through the hole diameter, the hole diameter is over large, and the hole diameter is unqualified; if the diameter of the through gauge end can not pass through the hole, the hole diameter is too small, and the hole diameter is unqualified; if the go gauge end can pass through the aperture and the no-go gauge end can not pass through the aperture, the aperture size is qualified. That is, the go-no-go gauge can detect whether the size of the component is within the acceptable range.

At present, the existing go-no go gauge has the problems of low detection precision and inconvenient use.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present application is to provide a go/no-go gauge and a go/no-go gauge set, so as to improve the problems of low detection precision and inconvenient use of the go/no-go gauge.

An embodiment of a first aspect of the present application provides a go-no go gauge, including: the measuring part is provided with a go gauge end and a no-go gauge end, and the outer diameter of the measuring part is gradually increased from the go gauge end to the no-go gauge end; the general gauge end extending part extends out of the general gauge end along the axis of the measuring part by a first length, and the outer diameter of the general gauge end extending part is equal to that of the general gauge end; and/or a no-go end extension extending a second length from the no-go end along an axis of the measurement portion, an outer diameter of the no-go end extension being equal to an outer diameter of the no-go end.

In the technical scheme of this application embodiment, the external diameter that leads to the rule end sets up to increase gradually from leading to the rule end to the no-go rule end, consequently only need operate once when detecting the aperture, and not need insert the rule end that leads to the no-go rule and the no-go rule end that lead to the no-go rule twice and arrange in the aperture in order to detect respectively whether the aperture accords with tolerance lower limit and tolerance upper limit. The arrangement of the extending part of the go-no go gauge end can judge whether the aperture is qualified or not more accurately through factors such as damping of the go-no go gauge penetrating the aperture when the size of the aperture to be detected is just the tolerance lower limit. The extension part of the end of the no-go gauge can be arranged to judge whether the size of the aperture is qualified or not more accurately through factors such as damping of the no-go gauge penetrating through the aperture when the size of the aperture to be detected is just the tolerance upper limit.

In some embodiments, the measuring portion is provided with a scale on the outer circumference thereof, and the scale is used for indicating the outer diameter value of the measuring portion at the scale. The measuring part is provided with scales, so that the inner diameter value of the aperture can be directly measured on the basis of judging that the aperture size meets the production standard, the detection efficiency is improved, and the time cost is saved.

In some embodiments, the scale comprises a plurality of annular markings spaced apart in the axial direction. When the size of the go-no go gauge is relatively small, the scales are arranged into annular marks, so that the process difficulty and the production cost can be reduced, and the go-no go gauge is easy to identify.

In some embodiments, the scale further comprises a scale indicating the outer diameter value of the measurement portion at any one of the plurality of annular markings. When the size of the go-no go gauge is relatively small, only one index is marked, so that the process difficulty and the production cost can be reduced.

In some embodiments, the measuring portion is peripherally provided with a groove, and the scale is provided in the groove. Through setting up the scale in the recess, can prevent the wearing and tearing of scale, increase logical no-go gage's life.

In some embodiments, the plurality of ring markings includes a first ring marking and a second ring marking disposed at the go gauge end and the no-go gauge end, respectively. Annular marks are provided at the go gauge end and the no-go gauge end, so that boundaries between the measuring portion and the go gauge end extension and between the measuring portion and the no-go gauge end extension are easily recognized.

In some embodiments, the go-no-go gauge further comprises: and the limiting part is arranged at one end of the no-go gauge end extending part, which is far away from the measuring part, and the outer diameter of the limiting part is larger than that of the no-go gauge end extending part. Set up spacing portion and can prevent to pass through the no-go gage and fall into in the oversize aperture when detecting the deep hole.

In some embodiments, the go-no go gauge further comprises: the guide part is arranged at one end, far away from the measuring part, of the general gauge end extending part, and the outer diameter of the guide part is gradually reduced along the direction far away from the general gauge end extending part. The guide part can enable the go-no-go gauge to be inserted into the aperture to be measured more easily.

In some embodiments, the guide is rounded or chamfered. The edge of the part is provided with the fillet or the chamfer, so that the damage of the end edge caused by stress concentration can be avoided, and the service life of the go-no go gauge is prolonged.

In some embodiments, the pass-no-go gauge is made of an insulating material; or the periphery of the go-no go gauge is coated with an insulating layer. The go-no go gauge is insulated from the part to be measured, so that the application range of the go-no go gauge can be enlarged, and the go-no go gauge can be applied to the electrical field of battery manufacturing and the like.

In some embodiments, the go-no-go gauge further comprises a handle removably disposed at an end of the go-no-go gauge facing away from the go-no-go gauge end extension. When the go-no go gauge is relatively small in size, the handle is arranged to facilitate a user to pick up the go-no go gauge.

Embodiments of a second aspect of the present application provide a go/no go gauge set, comprising: a plurality of go-no-go gauges as described in the above embodiments, wherein the measuring ranges of two go-no-go gauges adjacent in size at least partially overlap.

In the technical scheme of this application embodiment, with a plurality of go-no go gauges that have different measuring range constitution go-no go gauge suit, easily categorised management and maintenance.

In some embodiments, the plurality of pass-no-go gauges includes at least a first pass-no-go gauge and a second pass-no-go gauge, the first pass-no-go gauge having a first base size, the second pass-no-go gauge having a second base size, the first base size being greater than the second base size, and an outer diameter of the pass-no-go gauge end extension of the first pass-no-go gauge being equal to or less than an outer diameter of the no-go gauge end extension of the second pass-no-go gauge and equal to or greater than the second base size. By setting the measuring range of the go-no go gauge to be in the form, the largest measuring range can be covered by the least number of go-no go gauges, and when the aperture is detected by using the first go-no go gauge and the aperture is judged to be too small, the second go-no go gauge is selected for detection, so that the detection efficiency is improved, and the time cost is saved.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are therefore not to be considered limiting of its scope.

FIG. 1 is a schematic structural view of a go/no-go gauge according to some embodiments of the present application;

FIG. 2 is a schematic structural view of a go/no-go gauge according to some embodiments of the present application;

FIG. 3 is a side view of a pass-stop gauge according to some embodiments of the present application;

FIG. 4 is a side view of a pass-stop gauge of some embodiments of the present application;

FIG. 5 is a side view of a pass-stop gauge of some embodiments of the present application;

FIG. 6 is a schematic structural view of a go/no-go gauge according to some embodiments of the present application;

FIG. 7 is a side view of a pass-stop gauge of some embodiments of the present application;

FIG. 8 is a cross-sectional view of the pass-stop gauge of some embodiments of the present application taken along line AA' in FIG. 3;

fig. 9 is a schematic structural diagram of a go/no go gauge set according to some embodiments of the present disclosure.

Description of reference numerals:

go/no go gauge 1000, go/no go gauge set 2000;

the measuring part 100, the go gauge end extension part 200, the no-go gauge end extension part 300, the handle 400, the handle combining part 410, the hollow part 420, the go gauge end 110, the no-go gauge end 120, the scale 130, the first annular mark 131, the second annular mark 132, the third annular mark 133, the groove 140, the limiting part 310 and the guide part 210;

the first handle assembly comprises a first go-no-go gauge 1000a, a second go-no-go gauge 1000b, a third go-no-go gauge 1000c, a handle 500, a first handle coupling portion 510a, a second handle coupling portion 510b, a third handle coupling portion 510c, a no-go gauge end extension 300b, a go-no-go gauge end extension 200a, a go-no-go gauge end 110a and a no-go gauge end 120 a.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

In the process production, a large number of operations are required to check whether the dimensions of the components meet production standards, for example, to check whether the dimensions of the apertures are within acceptable tolerances. Currently, this operation is achieved by a go-no-go gauge.

The applicant has noticed that when the existing go-no-go gauge is used to detect the bore diameter, the same bore diameter needs to be operated twice, that is, the go-no-go gauge end is tried to be inserted into the bore diameter to detect whether the bore diameter meets the lower tolerance limit, and then the go-no-go gauge end is tried to be inserted into the same bore diameter after the go-no-go gauge is pulled out from the bore diameter to detect whether the bore diameter meets the upper tolerance limit, so the detection efficiency is low. In addition, when the existing go-no-go gauge is used for detecting the hole diameter with the size just equal to the lower limit of the tolerance or the upper limit of the tolerance, the problem of inaccurate detection also exists.

To alleviate the problem of inefficient detection, the applicant has found that a go-no-go gauge may be provided comprising a measuring portion having a go end and a no-go end, the outer diameter of the measuring portion increasing from the go end to the no-go end. Therefore, when the go-no go gauge is used for detecting the aperture, the go-no go gauge can be inserted into the aperture from the go-no go gauge end, and if the go gauge end can pass through the aperture and the no-go gauge end can not pass through the aperture, the aperture can be judged to be qualified; if the drift diameter end can not pass through the hole diameter, the hole diameter is too small; if both the go gauge end and the no-go gauge end can pass through the aperture, the aperture is too large. I.e. for one aperture only one detection is required.

In view of the above, in order to solve the problem of inaccurate detection of the go-no-go gauge, the applicant found that a go-no-go gauge end extension and a no-go gauge end extension can be respectively provided at a go-no-go gauge end and a no-go gauge end of the go-no-go gauge, and the outer diameter of the go-no-go gauge end extension is equal to the outer diameter of the go-no-go gauge end and the outer diameter of the no-go gauge end extension is equal to the outer diameter of the no-go gauge end. Therefore, when the go-no go gauge is used for detecting the aperture with the size just equal to the lower tolerance limit or the upper tolerance limit, whether the aperture is qualified or not can be judged more accurately through factors such as damping of the go-no go gauge passing through the aperture

For convenience of description, the following embodiments take a go/no go gauge 1000 as an example in an embodiment of the present application.

Fig. 1 is a schematic structural diagram of a go/no-go gauge 1000 according to some embodiments of the present application. Referring to fig. 1, some embodiments of the present application provide a go/no go gauge 1000, including: a measuring part 100 having a go end 110 and a no-go end 120, the outer diameter of the measuring part 100 gradually increasing from the go end 110 to the no-go end 120; a gauge end extension 200 extending a first length from the gauge end 110 along the axis of the measurement portion 100, the gauge end extension 200 having an outer diameter equal to the outer diameter of the gauge end 110; and/or a no-go end extension 300 extending a second length from the no-go end 120 along the axis of the measurement portion 100, the no-go end extension 300 having an outer diameter equal to the outer diameter of the no-go end 120.

The go-no go gauge 1000 is a measuring tool for detecting whether any aperture is qualified in the process flow.

The gauge-end extension 200 and the no-gauge-end extension 300 may have a cylindrical shape, and the measuring part 100 may have a truncated cone shape. The outer diameter of the go gauge end 110 is set as the lower tolerance limit of the aperture to be measured, and the outer diameter of the no-go gauge end 120 is set as the upper tolerance limit of the aperture to be measured. The gauge-end extension 200, the measurement section 100, and the no-gauge-end extension 300 are coaxially disposed.

In some embodiments, the outer diameter of the measurement portion 100 increases linearly from the gauge end 110 to the gauge end 120, but the manner in which the outer diameter of the measurement portion 100 increases is not limited thereto, e.g., in other embodiments, the outer diameter of the measurement portion 100 may increase non-linearly from the gauge end 110 to the gauge end 120.

It can be understood that, since the outer diameter of the measuring portion 100 gradually increases from the go gauge end 110 to the no-go gauge end 120, whether the size of one aperture is acceptable can be determined by a single detection operation. Specifically, when the go-no-go gauge 1000 is inserted into the bore from the go-no-go end extension 200, if the go-no-go end 110 can pass through the bore and the no-go end 120 cannot pass through the bore, the bore is of a qualified size; if the gauge end 110 (or the gauge end extension 200) cannot pass through the bore, or both the gauge end 110 and the gauge end 120 can pass through the bore, the bore is not sized.

When the size of the hole to be measured is just the lower limit of the tolerance, the through gauge end 110 is provided with the through gauge end extension part 200, so that the situation that the through gauge 1000 cannot be inserted into the hole to be measured and cannot be accurately judged can be prevented, the detection accuracy can be increased through the resistance between the through gauge end extension part 200 and the inner wall of the hole, when the size of the hole to be measured is just the upper limit of the tolerance, the situation that the through gauge 1000 completely passes through the hole to be misjudged can be prevented because the no gauge end extension part 300 is arranged on the no gauge end 120, and the detection accuracy can be increased through the resistance between the no gauge end extension part 300 and the inner wall of the hole.

By setting the outer diameter of the measuring portion 100 to be gradually increased from the go gauge end 110 to the no-go gauge end 120, and providing the go gauge end extension 200 and the no-go gauge end extension 300 at the go gauge end 110 and the no-go gauge end 120, it is possible to increase the detection accuracy and convenience of the go-no-go gauge 1000.

With continued reference to fig. 1, according to some embodiments of the present disclosure, the measuring portion 100 may be provided with a scale 130 on the outer circumference, and the scale 130 may be used to indicate the outer diameter value of the measuring portion 100 at the scale 130.

It should be understood that the scale 130 may be a complete ring shape disposed around the outer circumference of the measuring part 100, or may be an incomplete ring shape. The scales 130 may be provided at equal intervals along the axial direction, or may be provided at unequal intervals along the axial direction.

The measurement portion 100 is provided with a scale 130 at the periphery thereof so that the inner diameter value of the aperture can be directly measured on the basis of judging that the aperture meets the production standard.

According to some embodiments of the present application, the scale 130 may include a plurality of annular markings spaced apart in the axial direction.

It should be noted that in fig. 1, for illustrative purposes, a portion of the plurality of ring-shaped marks located on the back side of the no-go gauge 1000 is seen through, but in a practical case, the no-go gauge 1000 may be made of an opaque material, i.e., a portion of the plurality of ring-shaped marks located on the back side of the no-go gauge 1000 may not be visible.

It should be understood that the ring-shaped mark may be a complete ring shape disposed around the outer circumference of the measuring part 100, or may be an incomplete ring shape. The annular marks may be disposed at equal intervals in the axial direction, or may be disposed at unequal intervals in the axial direction. The embodiment of the present application does not limit this.

When the size of go-no-go gauge 1000 is relatively small, compared with the scale type scale, the annular marking type scale can reduce the process difficulty and the production cost, and is easier for the user to identify.

According to some embodiments of the present application, the scale 130 may also include a scale indicating the outer diameter value of the measurement portion 100 at any one of the plurality of annular markings.

When the size of the go-no-go gauge 1000 is relatively small, compared with the method for marking the outer diameter value of each annular mark, the outer diameter value of only one annular mark is marked, and the process difficulty and the production cost can be reduced. Preferably, only the outer diameter value at the annular marking closest to the no-go end extension 300 may be marked. The user can directly read the qualified inner diameter value of the aperture according to the indicating number and the specification parameters of the go-no go gauge 1000.

Fig. 2 is a schematic structural diagram of a go-no go gauge according to some embodiments of the present application. Referring to fig. 2, according to some embodiments of the present disclosure, the measuring part 100 may be provided at an outer circumference thereof with a groove 140, and the scale 130 may be disposed in the groove 140.

The groove 140 may be a groove extending in the axial direction. The groove 140 may be a groove of any shape extending in the axial direction, and the shape of the groove 140 is not limited in the embodiments of the present application. The groove 140 may extend axially through the measurement portion 100 and to the gauge end extension 200 and the no-gauge end extension 300. The scale 130 may be disposed in the groove 140.

By arranging the scale 130 in the groove 140, abrasion to the scale 130 due to multiple times of friction between the outer wall of the go-no-go gauge 1000 and the inner wall of the bore can be prevented, and the service life of the go-no-go gauge 1000 is prolonged.

With continued reference to FIG. 1, according to some embodiments of the present application, the plurality of ring markings may include a first ring marking 131 and a second ring marking 132 disposed at the go gauge end 110 and the no-go gauge end 120, respectively.

The scale 130 includes first and second annular markings 131, 132, i.e., annular markings are provided at the gauge end 110 and the no-go end 120 to illustrate the boundaries between the measurement portion 100 and the gauge end extension 200, and the measurement portion 100 and the no-go end extension 300.

In some embodiments, the scale 130 further includes a plurality of third annular marks 133 located between the first annular mark 131 and the second annular mark 132 to sufficiently refine the scale 130 to more accurately measure the inner diameter value of the aperture to be measured.

FIG. 3 is a side view of a pass-stop gauge 1000 of some embodiments of the present application. Referring to fig. 3, according to some embodiments of the present application, the go/no-go gauge 1000 may further include: and a stopper 310 provided at an end of the no-go end extension 300 away from the measurement unit 100, wherein an outer diameter of the stopper 310 is larger than an outer diameter of the no-go end extension 300.

It should be understood that the shape of the stopper portion 310 is not limited to the cylindrical shape shown in fig. 3. For example, the outer diameter of the stop portion 310 may increase linearly or non-linearly in a direction away from the no-go end extension 300.

When the bore to be detected is a deep hole and the bore size is larger than the outer diameter value of the no-go gauge 1000 at the no-go gauge end extension 300, the limit portion 310 is arranged at one end of the no-go gauge end extension 300 far away from the measuring portion 100, so that the no-go gauge 1000 can be prevented from falling into the deep hole.

Fig. 4 and 5 are side views of a go/no-go gauge according to some embodiments of the present application, and referring to fig. 4 and 5, the go/no-go gauge 1000 may further include: and a guide portion 210 provided at an end of the stylet tip extension portion 200 away from the measurement portion 100, wherein an outer diameter of the guide portion 210 is gradually reduced in a direction away from the stylet tip extension portion 200.

The guide portion 210 may have a truncated cone shape, but is not limited thereto. The outer diameter of the guide portion may decrease linearly in a direction away from the gauge end extension 200, but is not limited thereto, for example, in other embodiments, the outer diameter of the guide portion may decrease non-linearly in a direction away from the gauge end extension 200.

Providing a guide at the end of the go-no-go end extension 200 distal from the measurement portion 100 may allow the go-no-go gauge 1000 to be more easily inserted into the bore.

According to some embodiments of the application, the guide may be rounded or chamfered. The edge of the part is provided with a fillet or a chamfer, so that the damage of the end edge caused by stress concentration can be avoided, and the service life of the go-no go gauge 1000 is prolonged.

According to some embodiments of the present application, the go-no-go gauge 1000 is made of an insulating material; or the periphery of the go-no go gauge 1000 is coated with an insulating layer.

The insulating material may include, but is not limited to, plastic, rubber, glass, ceramic, and the like. The insulating layer may be made of plastic, rubber, glass, ceramic, etc., but is not limited thereto.

The go-no-go gauge 1000 is insulated from the component to be tested, so that the application range of the go-no-go gauge 1000 can be increased, and the go-no-go gauge can be applied to the electrical field of battery manufacturing and the like.

FIG. 6 is a schematic diagram of a pass-stop gauge according to some embodiments of the present application. Referring to fig. 6, according to some embodiments of the present disclosure, the go/no-go gauge 1000 may further include a handle 400, the handle 400 being detachably disposed at an end of the go/no-go gauge 1000 facing away from the go/no-go end extension 200.

In this embodiment, the no-go gauge 1000 may further include a handle coupling portion 410 provided at an end of the no-go end extension 300 facing away from the no-go end extension 200. The handle coupling portion 410 may be integrally formed with the no-go end extension 300, but is not limited thereto. The handle coupling portion 410 may have a cylindrical shape.

FIG. 7 is a side view of a pass-stop gauge according to some embodiments of the present application. FIG. 8 is a cross-sectional view of the pass-stop gauge of some embodiments of the present application taken along line AA' in FIG. 3. Referring to fig. 7 and 8, the handle 400 may have a partially hollow cylindrical shape, wherein the hollow portion 420 may have a shape and size corresponding to the handle coupling portion 410. The handle 400 cooperates with the handle engaging portion 410 to enable detachable mounting.

The handle 400 is provided to facilitate the user's picking up of the go-no-go gauge 1000 when the size of the go-no-go gauge 1000 is relatively small.

Fig. 9 is a schematic structural diagram of a go/no go gauge set according to some embodiments of the present disclosure. Referring to fig. 9, some embodiments of the present application provide a go/no go gauge set 2000, comprising: a plurality of go-no-go gauges 1000 as described in the previous embodiments, wherein the measuring ranges of two adjacent go-no-go gauges of the plurality of go-no-go gauges 1000 at least partially overlap.

The two adjacent go-no-go gauges are two go-no-go gauges adjacent to each other in the standard size of the aperture detected by the go-no-go gauge. The measurement range of the no-go gauge 1000 is a range of an outer diameter value of the no-go gauge end 110 or more and an outer diameter value of the no-go gauge end 120 or less, and it should be noted that the outer diameter value of the no-go gauge end 110 and the outer diameter value of the no-go gauge end 120 are included in the measurement range. The at least partial overlapping of the measurement ranges comprises: the two measuring ranges only coincide with the end points, the two measuring ranges completely coincide and the two measuring ranges only partially coincide.

A plurality of go-no go gauges 1000 with different measurement ranges are combined into a go-no go gauge set 2000, and classification management and maintenance are easy. The measurement ranges of two adjacent go-no go gauges of a plurality of go-no go gauges 1000 are at least partially overlapped, so that the problem that the aperture of a certain specific size cannot be detected can be prevented, and the application range of the go-no go gauge set 2000 is enlarged. In some embodiments, the measurement ranges of two adjacent on-off gauges are specifically set to only overlap end points, so that the maximum measurement range can be covered by using the minimum number of on-off gauges, and waste of the on-off gauges is reduced.

With continued reference to fig. 9, in accordance with some embodiments of the present disclosure, the plurality of pass-no-go gauges 1000 includes at least a first pass-no-go gauge 1000a and a second pass-no-go gauge 1000b, the first pass-no-go gauge 1000a has a first base size, the second pass-no-go gauge 1000b has a second base size, the first base size is greater than the second base size, and an outer diameter of the pass-no-go end extension 200a of the first pass-no-go gauge 1000a is equal to or less than an outer diameter of the no-go end extension 300b of the second pass-no-go gauge 1000b and is equal to or greater than the second base size.

The first base size is the standard size of the aperture detected using the first go-no-go gauge 1000a and the second base size is the standard size of the aperture detected using the second go-no-go gauge 1000 b.

By setting the measuring ranges of the two go-no-go gauges to be in the form, when the first go-no-go gauge 1000a is used for detecting the aperture and the aperture is judged to be too small, the second go-no-go gauge 1000b is selected for measuring, so that the measuring efficiency is improved, and the time cost is saved.

With continued reference to fig. 5, in one embodiment, the set of go/no-go gauges 2000 may include a first go/no-go gauge 1000a, a second go/no-go gauge 1000b, and a third go/no-go gauge 1000 c. The first, second and third no- go gauges 1000a, 1000b, 1000c have first, second and third basic dimensions, respectively. Wherein the second basic size is smaller than the first basic size, and the first basic size is smaller than the third basic size. For example, the first basic size of the first no-go gauge 1000a is 8mm, which has a first tolerance range [8mm ± 0.2], the second basic size of the second no-go gauge 1000b is 7.8mm, which has a second tolerance range [7.8mm ± 0.2], and the third basic size of the third no-go gauge 1000c is 8.2mm, which has a third tolerance range [8.2mm ± 0.2 ]. It is understood that when the first no-go gauge 1000a is used to detect the bore diameter, if the no-go end 110a (or the no-go end extension 200a) of the first no-go gauge 1000a cannot pass through the bore diameter, the bore diameter is too small, and therefore the second no-go gauge 1000b adjacent to the first no-go gauge 1000a in size can be selected for detection. On the contrary, when the first no-go gauge 1000a is used to detect the aperture, if the no-go end 120a of the first no-go gauge 1000a can pass through the aperture, the aperture is excessively large, and therefore, the third no-go gauge 1000c having a size adjacent to that of the first no-go gauge 1000a can be selected to detect.

In this embodiment, the go/no-go gauge set 2000 may further include a handle 500. The first, second, and third no- go gauges 1000a, 1000b, and 1000c may also have first, second, and third handle couplings 510a, 510b, and 510c, respectively. The first handle joint 510a, the second handle joint 510b and the third handle joint 510c may have the same size, and the handle 500 may be engaged with any one of the first handle joint 510a, the second handle joint 510b and the third handle joint 510 c.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not depart from the spirit of the embodiments of the present application, and they should be construed as being included in the scope of the claims and description of the present application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (13)

1. A go and no go gauge, comprising:

the measuring part is provided with a go gauge end and a no-go gauge end, and the outer diameter of the measuring part is gradually increased from the go gauge end to the no-go gauge end;

a gauge end extension extending a first length from the gauge end along an axis of the measurement portion, the gauge end extension having an outer diameter equal to an outer diameter of the gauge end; and/or the presence of a gas in the gas,

and the extension part of the no-go gauge end extends out of the no-go gauge end along the axis of the measuring part by a second length, and the outer diameter of the extension part of the no-go gauge end is equal to that of the no-go gauge end.

2. The go-no-go gauge according to claim 1, wherein the measuring portion is provided with a scale on an outer circumference thereof for indicating an outer diameter value of the measuring portion at the scale.

3. The go-no-go gauge of claim 2, wherein the scale comprises a plurality of annular markings spaced along the axial direction.

4. The go-no-go gauge of claim 3, wherein the scale further comprises a scale indicating an outer diameter value of the measuring portion at any one of the plurality of annular markings.

5. The go-no-go gauge according to claim 2, wherein the measuring portion is provided with a groove on its outer circumference, and the scale is provided in the groove.

6. The go-no-go gauge of claim 3 or 4, wherein the plurality of ring markings comprises a first ring marking and a second ring marking disposed at the go end and the no-go end, respectively.

7. The go-no go gauge of claim 1, further comprising:

the limiting part is arranged at one end, far away from the measuring part, of the no-go gauge end extending part, and the outer diameter of the limiting part is larger than that of the no-go gauge end extending part.

8. The go-no go gauge of claim 1, further comprising:

the guide part is arranged at one end, far away from the measuring part, of the go gauge end extending part, and the outer diameter of the guide part is gradually reduced along the direction far away from the go gauge end extending part.

9. The go-no-go gauge of claim 8, wherein the guide is radiused or chamfered.

10. The go-no-go gauge according to any one of claims 1-9, characterized in that it is made of insulating material; or

The periphery of the go-no go gauge is coated with an insulating layer.

11. The go-no-go gauge according to any one of claims 1-9, further comprising a handle removably disposed at an end of the go-no-go gauge facing away from the go-no-go gauge end extension.

12. A go-no-go gauge kit, comprising:

a plurality of the go-no-go gauges of any one of claims 1-11, wherein the measuring ranges of two of the go-no-go gauges that are adjacent in size at least partially overlap.

13. The set of go and no-go gauges of claim 12, wherein the plurality of go and no-go gauges includes at least a first go and no-go gauge having a first base size and a second go and no-go gauge having a second base size, the first base size being greater than the second base size, and an outer diameter of a go end extension of the first go and no-go gauge being equal to or less than an outer diameter of a no-go end extension of the second go and no-go gauge and equal to or greater than the second base size.

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