CN110470190B - Dovetail double-R angle edge length measuring scale and measuring method - Google Patents
Dovetail double-R angle edge length measuring scale and measuring method Download PDFInfo
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- CN110470190B CN110470190B CN201910691417.XA CN201910691417A CN110470190B CN 110470190 B CN110470190 B CN 110470190B CN 201910691417 A CN201910691417 A CN 201910691417A CN 110470190 B CN110470190 B CN 110470190B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/20—Slide gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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Abstract
A dovetail double-R angle edge length measuring scale and a measuring method relate to the technical field of measuring instruments. This two R angle limit of forked tail length measurement chi includes the chi body, the chi body is equipped with the scale that extends along its length direction and can follows the vernier that length direction removed, the chi body coupling has two to measure the board, at least one is measured the board and is configured into and can follow length direction and remove, every is measured the board and all is configured into and can rotates for the plane at chi body place, every is measured the board and all is connected with and is used for its fixed subassembly and a vernier baffle that removes fixed with the chi body, two vernier baffles are located the both ends of vernier movement orbit respectively, with the position of injecing the vernier. The measuring scale and the measuring method for the side length of the dovetail double-R-angle can be used for rapidly and accurately measuring the side length of the R angle of a dovetail groove or a dovetail table.
Description
Technical Field
The application relates to the technical field of measuring instruments, in particular to a dovetail double-R angle edge length measuring scale and a measuring method.
Background
The brick that inlays that blast furnace stave used usually adopts the design structure of two R chamfers of forked tail, leads to it to the required precision of size higher, and after the producer made the mould according to the drawing and produced the brick that inlays that has two R chamfers of forked tail, need measure the check to the size of inlaying the brick. The structural specificity of the double-R chamfered tile with the dovetail leads the size of the tile to be difficult to measure by using a conventional measuring tool, and in the actual measuring process, two methods are mainly adopted for measurement: one method is to indirectly calculate the side length of the theoretical common edge of the double R chamfers by a special calculation method, and the other method is to use the projection of the detected inlaid brick to carry out theoretical measurement. However, the two methods indirectly obtain the public edge length of the dovetail double-R angle of the dovetail double-R chamfer inlaid brick through calculation, the process is complicated, and the accuracy of the obtained dimension numerical value cannot be guaranteed.
Disclosure of Invention
The application aims to provide a dovetail double-R angle edge length measuring scale and a measuring method, so that the defects that an existing dovetail double-R angle edge length detecting device is complex in structure and difficult to measure are overcome.
The embodiment of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a dovetail double-R angle edge length measuring ruler, which includes a ruler body, the ruler body is provided with a scale extending along a length direction of the ruler body and a cursor capable of moving along the length direction, the ruler body is connected with two measuring plates, at least one measuring plate is configured to move along the length direction, each measuring plate is configured to rotate relative to a plane where the ruler body is located, each measuring plate is connected with a fixing component and a cursor baffle for fixing or unfixing the measuring plate with the ruler body, and the two cursor baffles are located at two ends of a cursor moving track respectively to limit a position of the cursor.
In an optional implementation scheme, the ruler body is provided with a strip-shaped hole extending along the length direction of the ruler body and at least one rotating shaft, the rotating shaft rotatably penetrates through the strip-shaped hole, and two ends of the rotating shaft are respectively connected with the measuring plate and the corresponding vernier baffle.
In some alternative embodiments, the fixing assembly includes a fixing bolt threadedly coupled to the rotating shaft.
In some alternative embodiments, a first positioning plate is connected to at least one measuring plate, and the first positioning plate is rotatably connected to the corresponding measuring plate via a first connecting shaft.
In some optional embodiments, at least one second positioning plate is connected with the ruler body, and the second positioning plate is rotatably connected with the ruler body through a second connecting shaft.
In some alternative embodiments, the vernier is provided with a sliding slot for sliding engagement with one side of the blade.
In some optional embodiments, the ruler body is provided with a scale groove extending along the length direction of the ruler body, and the vernier is provided with a fixture block which is slidably inserted into the scale groove.
In some optional embodiments, two ends of the ruler body are respectively connected with two limiting parts, and the two limiting parts are respectively positioned at two ends of the moving track of the two measuring plates so as to limit the positions of the two measuring plates.
In some optional embodiments, the top of the vernier is provided with a vernier positioning block with two wedge-shaped ends, and the two ends of the vernier positioning block are arranged along the length direction of the ruler body and used for entering two vernier baffles to respectively intersect with the main ruler to perform positioning measurement.
In a second aspect, an embodiment of the present application provides a method for measuring a length of a double-R corner edge of a dovetail, which is implemented by using the above-mentioned measuring ruler for measuring a length of a double-R corner edge of a dovetail, and includes the following steps:
attaching the surface of the ruler body to the plane where the common edges of the two R corners of the dovetail groove are located;
moving and rotating the two measuring plates along the ruler body to enable the two measuring plates to be respectively attached to planes where two R angles of the dovetail groove and one side adjacent to the common side are located;
and moving the vernier along the length direction of the ruler body, reading when the vernier respectively presses the vernier baffle connected with the two measuring plates to obtain a first length and a second length, wherein the difference value of the first length and the second length is the side length of the common edge of the two R angles of the dovetail groove.
The beneficial effects of the embodiment of the application are that: the dovetail double-R-angle edge length measuring scale comprises a scale body, wherein the scale body is provided with scales extending along the length direction of the scale body and a vernier capable of moving along the length direction, the scale body is connected with two measuring plates, at least one measuring plate is configured to move along the length direction and is connected with a fixing component used for fixing or unfixing the measuring plate and the scale body, and each measuring plate is configured to rotate relative to a plane where the scale body is located; each measuring plate is connected with a vernier baffle, and the two vernier baffles are respectively positioned at two ends of the vernier movement track and used for limiting the position of the vernier. The dovetail double-R angle edge length measuring method provided by the embodiment of the application comprises the following steps: attaching the surface of the ruler body to the plane where the common edges of the two R corners of the dovetail groove are located; moving and rotating the two measuring plates along the ruler body to enable the two measuring plates to be respectively attached to planes where two R angles of the dovetail groove and one side adjacent to the common side are located; and moving the vernier along the length direction of the ruler body, reading when the vernier respectively presses the vernier baffle connected with the two measuring plates to obtain a first length and a second length, wherein the difference value of the first length and the second length is the side length of the common edge of the two R angles of the dovetail groove. The measuring scale and the measuring method for the side length of the dovetail double-R angle can quickly and accurately measure the side length of the common side of two R angles of a dovetail groove or a dovetail table.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a first view angle of a dovetail double-R-angle edge length measuring ruler provided in embodiment 1 of the present application;
FIG. 2 is a schematic structural diagram of a second view angle of the dovetail double-R-angle edge length measuring ruler provided in embodiment 1 of the present application;
fig. 3 is a schematic structural view of a cursor in the dovetail double-R-angle edge length measuring ruler provided in embodiment 1 of the present application;
FIG. 4 is a schematic diagram of a dovetail platform with two R angles detected by the dovetail double-R-angle edge length measuring ruler provided in embodiment 1 of the present application;
fig. 5 is a schematic structural diagram of a dovetail double-R-angle edge length measuring ruler provided in embodiment 2 of the present application.
In the figure: 100. a ruler body; 101. a first side surface; 102. a second side surface; 103. a third side; 110. a scale groove; 120. a cursor; 121. a first section; 122. a second section; 123. a sliding groove; 124. a clamping block; 125. a vernier positioning block; 130. measuring a plate; 140. a vernier baffle; 150. a strip-shaped hole; 160. a rotating shaft; 170. fixing the bolt; 180. a first positioning plate; 181. a first connecting shaft; 190. a second positioning plate; 191. a second connecting shaft; 200. a limiting part.
Detailed Description
In order to make the objects, 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 drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when in use, and are used only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The features and properties of the present application are described in further detail below with reference to examples.
Example 1
Referring to fig. 1 and 2, an embodiment of the present application provides a dovetail double-R angle edge length measuring ruler, which includes a ruler body 100, the ruler body 100 has a first side surface 101, a second side surface 102 and a third side surface 103 connected in sequence, the second side surface 102 of the ruler body 100 is provided with a scale extending along a length direction thereof, the scale is a concave scale provided on the second side surface 102 of the ruler body 100 for length detection, a scale groove 110 extending along the length direction of the ruler body 100 is provided in a middle portion of the scale, the first side surface 101 of the ruler body 100 is further provided with a strip-shaped hole 150 extending along the length direction thereof, a bottom of the strip-shaped hole 150 penetrates through the third side surface 103 of the ruler body 100, two ends of the third side surface 103 of the ruler body 100 are respectively protruded to form a limiting portion 200, and the strip-shaped hole 150 is located between the two limiting portions 200.
As shown in fig. 3, the ruler body 100 is connected with a cursor 120 capable of moving along the length direction thereof, the cursor 120 is L-shaped and is formed by connecting a first section 121 and a second section 122, the first section 121 is provided with a slot 123 slidably engaged with the first side surface 101 of the ruler body 100, the second section 122 is provided with a block 124 slidably inserted in the scale slot 110, the second section 122 is provided with cursor scales extending along the length direction of the ruler body 100, the cursor scales are respectively arranged on the upper and lower sides of the second section 122, the top of the first section 121 of the cursor 120 is connected with a cursor positioning block 125 with two wedge-shaped ends, and two ends of the cursor positioning block 125 are arranged along the length direction of the ruler body 100.
Two ends of the bar-shaped hole 150 are respectively inserted with a rotating shaft 160 capable of rotating and moving along the bar-shaped hole 150, one end of each rotating shaft 160 extending out of the first side surface 101 of the ruler body 100 is connected with a cursor baffle 140, the other end of each rotating shaft 160 extending out of the third side surface 103 of the ruler body 100 is connected with a measuring plate 130, one end of the rotating shaft 160 extending out of the first side surface 101 is connected with a fixing bolt 170 through a thread after penetrating through the cursor baffle 140, the cursor baffles 140 connected with the two rotating shafts 160 respectively block the cursor positioning blocks 125 at the tops of the cursors 120 moving along the two ends of the ruler body 100 in the length direction, the thickness of the cursor baffle 140 along the width direction of the ruler body 100 is equal to the thickness of the measuring plate 130 along the width direction of the ruler body 100, and the measuring plate 130 drives the cursor baffle 140 to rotate in the same direction and angle when rotating.
The two measuring plates 130 are respectively connected with a first positioning plate 180, each measuring plate 130 is connected with a rotatable first connecting shaft 181, the first connecting shafts 181 penetrate through the first positioning plates 180 and then are connected with fastening bolts, the first connecting shafts 181 penetrate through two ends of the measuring plates 130, two ends of the ruler body 100 are respectively connected with a second positioning plate 190, two ends of the ruler body 100 are respectively connected with a rotatable second connecting shaft 191, and the second connecting shafts 191 penetrate through the second positioning plates 190 and then are connected with the fastening bolts.
The dovetail double-R-angle edge length measuring scale provided by the embodiment of the application can be used for measuring the edge length of the R angle of a dovetail groove or a dovetail table. As shown in fig. 4, a method of measuring the length of the double-R corner edge of the dovetail using the double-R corner edge length measuring scale, in which the dovetail stage having the double-R corner edge of the dovetail is exemplified as follows:
when measuring, firstly, the fourth side surface of the ruler body 100, which is arranged opposite to the third side surface 103, is attached to the plane where the common edges of the two R corners of the dovetail platform are located.
Then the two fixing bolts 170 are respectively rotated to make the fixing bolts 170 move along the corresponding rotating shafts 160 and stop pressing and fixing the cursor baffle 140 and the rotating shafts 160 on the ruler body 100, at this time, the user moves the two rotating shafts 160 along the length direction of the ruler body 100, thereby driving the measuring plate 130 and the vernier baffles 140 respectively connected to both ends of the two rotating shafts 160 to move, when the two measuring plates 130 are pushed to move to the side where the two R angles are respectively adjacent to the common side of the two R angles, the two measuring plates 130 are rotated relative to the ruler body 100, and the two measuring plates 130 are respectively attached to the planes of one sides of the two R corners adjacent to the common side of the two R corners by adjusting the measuring plates 130 to move and rotate along the ruler body 100, and the two fixing bolts 170 are rotated in opposite directions to respectively move the fixing bolts 170 along the corresponding rotating shafts 160 and press and fix the vernier baffle 140 and the rotating shafts 160 on the ruler body 100 again.
The vernier 120 is moved back and forth along the length direction of the ruler body 100, when the vernier 120 is blocked by the vernier baffle 140 connected with the two rotating shafts 160, the reading of the scale corresponding to the vernier 120 is respectively read to obtain a first length and a second length, and the difference between the first length and the second length is calculated to be the side length of the common edge of the two R angles of the dovetail table.
Wherein, the two measuring plates 130 are respectively connected with the first positioning plate 180 through the corresponding first connecting shaft 181 to assist the positioning, when the user uses the two measuring plates 130 to respectively attach to the planes of the two R corners adjacent to the common side of the two R corners, the corresponding first positioning plate 180 may also be rotated relative to the measurement plate 130, so as to press the dovetail groove or the dovetail stage with the first positioning plate 180, thereby having the functions of positioning and fixing, ensuring the stable operation of the measuring process, the second positioning plate 190 connected with the ruler body 100 through the second connecting shaft 191 can also have the function of positioning the ruler body 100, when the ruler body 100 is attached to the dovetail groove or the plane where the common edges of the two R corners of the dovetail platform are located, the second positioning plate 190 can be rotated relative to the ruler body 100 to press the dovetail groove or the dovetail platform by the second positioning plate 190 to ensure the position of the ruler body 100; the two ends of the ruler body 100 are respectively connected with one limiting part 200, the two limiting parts 200 are respectively positioned at the two ends of the moving track of the two measuring plates 130, and when the measuring plates 130 move along the length direction of the ruler body 100, the two limiting parts 200 are used for limiting the moving position of the measuring plates 130; in addition, the first connection shaft 181 penetrates both sides of the measurement plate 130, and a user can selectively fix the first positioning plate 180 to either side of the measurement plate 130 by using fastening bolts, so as to position the measurement plate 130 by using the first positioning plate 180; through setting up the vernier baffle 140 and measuring board 130 that thickness equals, can guarantee to measure board 130 and rotate and laminate in dovetail or dovetail one side and drive vernier baffle 140 and rotate the same angle simultaneously. The two cursor baffles 140 intersect with the ruler body 100 to form different angles, and the cursor positioning block 125 and the cursor baffles 140 are matched with each other by moving the cursor 120, so that the precise positioning and accurate reading can be realized through the bidirectional scales on the cursor 120.
The length measuring ruler for the double-R-angle edge of the dovetail and the length measuring method for the double-R-angle edge of the dovetail can measure the length of the common edge of the two R angles of the dovetail groove or the dovetail table, which are respectively arranged, quickly and accurately, have simple and reliable structure, are convenient to use and carry, can adapt to edges or surfaces containing R angles with different angles and different radians, are flexible to operate, and have a large application range.
In other alternative embodiments, the scale may be a raised scale, a printed scale or an adhesive film with scales on the second side 102 of the ruler body 100 for length measurement. Alternatively, the user may selectively rotatably connect the first positioning plate 180 to both sides of the measuring plate 130 using the first connecting shaft 181 and the corresponding fastening bolt; alternatively, the user can selectively and rotatably connect the second positioning plate 190 to both sides of the ruler body 100 by using the second connecting shaft 191 and the corresponding fastening bolt.
Example 2
As shown in fig. 5, the present application provides a dovetail double-R corner edge length measuring ruler, which includes a ruler body 100, the ruler body 100 has a first side surface 101, a second side surface 102 and a third side surface 103, which are sequentially connected, the second side surface 102 of the ruler body 100 is provided with a scale extending along a length direction thereof, the scale is a recessed scale provided on the second side surface 102 of the ruler body 100 for length detection, a scale groove 110 extending along the length direction of the ruler body 100 is provided in a middle portion of the scale, the first side surface 101 of the ruler body 100 is further provided with a strip-shaped hole 150 extending along the length direction thereof, and a bottom of the strip-shaped hole 150 penetrates through the third side surface 103 of the ruler body 100. The ruler body 100 is connected with a cursor 120 capable of moving along the length direction of the ruler body, the cursor 120 is L-shaped and is formed by connecting a first section part 121 and a second section part 122, the first section part 121 is provided with a clamping groove 123 in sliding clamping connection with the first side surface 101 of the ruler body 100, the second section part 122 is provided with a clamping block 124 inserted in the scale groove 110 in a sliding mode, the top of the first section part 121 of the cursor 120 is connected with a cursor positioning block 125 with two wedge-shaped ends, and the two ends of the cursor positioning block 125 are arranged along the length direction of the ruler body 100.
The two ends of the ruler body 100 are respectively connected with a rotatable rotating shaft 160, one end of the rotating shaft 160 extends out of the first side surface 101 of the ruler body 100 and is connected with a vernier baffle 140, the other end of the rotating shaft 160 extends out of the third side surface 103 of the ruler body 100 and is connected with a measuring plate 130, one end of the rotating shaft 160 extending out of the first side surface 101 is connected with a fixing bolt 170 through threads after penetrating through the vernier baffle 140, the vernier baffles 140 connected with the two rotating shafts 160 respectively block the vernier 120 moving along the two ends of the ruler body 100 in the length direction, one of the rotating shafts 160 is rotatably inserted in the strip-shaped hole 150 and can move along the strip-shaped hole 150, and the other rotating shaft 160 rotatably penetrates through the first side surface 101 and the third side surface 103 of the ruler body 100.
The difference between the double-R-angle length measuring ruler for dovetails provided by the embodiment of the present application and the double-R-angle length measuring ruler for dovetails provided by embodiment 1 is that, in the two measuring plates 130 connected to the ruler body 100 in this embodiment, one measuring plate 130 can move along the length direction of the ruler body 100 and can rotate relative to the plane of the ruler body 100, and the other measuring plate 130 can only rotate relative to the plane of the ruler body 100 and cannot move along the length direction of the ruler body 100, the double-R-angle length measuring ruler provided by this embodiment is substantially the same as the double-R-angle length measuring ruler for dovetails provided by embodiment 1, and the difference is that, when in use, the measuring plate 130 which cannot move along the ruler body 100 is first rotated and attached to the plane where one R-angle and the common edge of two R-angles are located, then the other measuring plate 130 is moved and rotated along the ruler body 100 to be attached to the plane where the other R-angle and the common edge of two R-angles are located, namely, when the cursor 120 is blocked by the two cursor baffles 140 connected with the rotating shaft 160, the reading of the scale corresponding to the cursor 120 is respectively read to obtain the first length and the second length, and the difference value between the first length and the second length is the side length of the common edge of the two R angles of the dovetail groove or the dovetail table.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (1)
1. A dovetail double-R angle edge length measuring scale comprises a scale body, wherein the scale body is provided with scales extending along the length direction of the scale body and a vernier capable of moving along the length direction, the dovetail double-R angle edge length measuring scale is characterized in that the scale body is connected with two measuring plates, at least one measuring plate is configured to move along the length direction, each measuring plate is configured to rotate relative to the plane where the scale body is located, each measuring plate is connected with a fixing component for fixing or unfixing the measuring plate with the scale body and a vernier baffle, and the two vernier baffles are respectively located at two ends of the vernier moving track to limit the position of the vernier; the ruler body is provided with a first side surface, a second side surface and a third side surface which are sequentially connected, the second side surface is provided with scales extending along the length direction of the ruler body, the middle part of each scale is provided with a scale groove extending along the length direction of the ruler body, the first side surface is also provided with a strip-shaped hole extending along the length direction of the first side surface, two ends of each strip-shaped hole are respectively inserted with a rotating shaft which can rotate and move along the strip-shaped hole, one end of each rotating shaft extending out of the first side surface of the ruler body is connected with a cursor baffle, the other end of each rotating shaft extending out of the third side surface of the ruler body is connected with a measuring plate, and the fixing component comprises a fixing bolt connected with the rotating shaft through threads; the bottom of the strip-shaped hole penetrates through the third side face of the ruler body, two ends of the third side face are respectively protruded to form limiting parts, and the strip-shaped hole is arranged between the two limiting parts; the vernier is L-shaped and is formed by connecting a first section part and a second section part, the first section part is provided with a clamping groove which is in sliding clamping connection with the first side surface of the ruler body, the second section part is provided with a clamping block which is inserted into the clamping groove in a sliding mode and a vernier scale which extends along the length direction of the ruler body, the vernier scale is respectively arranged on the upper side and the lower side of the second section part, the top of the first section part of the vernier is connected with a vernier positioning block of which two ends are wedge-shaped, and two ends of the vernier positioning block are arranged along the length direction of the ruler body; at least one measuring plate is connected with a first positioning plate, and the first positioning plate is rotatably connected with the corresponding measuring plate through a first connecting shaft; the ruler body is connected with at least one second positioning plate, and the second positioning plate is rotatably connected with the ruler body through a second connecting shaft.
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| CN201910691417.XA CN110470190B (en) | 2019-07-29 | 2019-07-29 | Dovetail double-R angle edge length measuring scale and measuring method |
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| CN201910691417.XA CN110470190B (en) | 2019-07-29 | 2019-07-29 | Dovetail double-R angle edge length measuring scale and measuring method |
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| CN111983204A (en) * | 2020-08-27 | 2020-11-24 | 中冶武汉冶金建筑研究院有限公司 | Masonry molding refractory mortar shrinkage testing tool and testing method |
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| GB190427651A (en) * | 1904-12-19 | 1905-12-19 | Samuel Irwin Crookes | Improvements in or relating to Verniers. |
| JP3096727B2 (en) * | 1995-11-16 | 2000-10-10 | 株式会社光電製作所 | Caliper and rotating arm |
| CN102410795B (en) * | 2011-02-12 | 2013-10-30 | 陈烁 | Double-sided scale vernier caliper |
| CN109839049B (en) * | 2019-02-26 | 2021-04-20 | 江苏理工学院 | Quick and simple dovetail groove guide rail size measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180748A (en) * | 2015-10-15 | 2015-12-23 | 南车戚墅堰机车车辆工艺研究所有限公司 | Detection tool |
| CN106871755A (en) * | 2015-12-11 | 2017-06-20 | 天润曲轴股份有限公司 | A kind of slide measure for measuring part chamfering |
| CN106767280A (en) * | 2016-12-27 | 2017-05-31 | 湖南南方宇航工业有限公司 | A kind of chamfering measuring tool for measuring length |
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