CN113654443A - Internal tooth and internal spline span on-line rapid measurement measuring tool - Google Patents
Internal tooth and internal spline span on-line rapid measurement measuring tool Download PDFInfo
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- CN113654443A CN113654443A CN202111012474.4A CN202111012474A CN113654443A CN 113654443 A CN113654443 A CN 113654443A CN 202111012474 A CN202111012474 A CN 202111012474A CN 113654443 A CN113654443 A CN 113654443A
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- 238000005259 measurement Methods 0.000 title description 7
- 210000000078 claw Anatomy 0.000 claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Classifications
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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
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
- G01B5/16—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between a succession of regularly spaced objects or regularly spaced apertures
- G01B5/166—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between a succession of regularly spaced objects or regularly spaced apertures of gear teeth
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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
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
- G01B5/16—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between a succession of regularly spaced objects or regularly spaced apertures
Abstract
The invention discloses an internal tooth and internal spline cross-bar distance online rapid measuring tool which comprises a tool body, wherein a tool frame is slidably arranged on the outer surface of the tool body, a second measuring claw and a first measuring claw are respectively arranged at the upper end and the lower end of the tool body, a fourth measuring claw and a third measuring claw are respectively arranged at the upper end and the lower end of the tool frame, a scale is arranged at the front end of the tool body, uniform scales are carved on the scale, a groove is formed in the front surface of the tool body, a rack and a depth scale are arranged in the groove, the rack is fixedly arranged in the groove, the depth scale covers the front surface of the rack, the depth scale can slide in the groove, a dial plate fixing plate is arranged at the front end of the tool frame, the tool body is positioned between the dial plate fixing plate and the tool frame, a stop block is fixed on the front surface of the tool body through a screw, and a dial plate mechanism is arranged at the front end of the dial plate fixing plate; the invention solves the problem that the cross-rod distance of the internal teeth or the internal splines with small modulus and small specification is inconvenient to measure on line.
Description
Technical Field
The invention relates to the technical field of measuring tools, in particular to an internal tooth and internal spline span on-line rapid measuring tool.
Background
The gear and the spline belong to typical transmission and connection parts in the mechanical industry, and are widely applied to industries such as automobiles, metallurgy, building materials, new energy, aviation industry and the like. The cross-bar distance is a key parameter in the processing of gears and splines, and belongs to a necessary inspection item, the conventional online measurement method is that external teeth are inspected by a common normal micrometer, for large-specification internal teeth or internal splines, measuring bars with the same diameter and proper diameter are placed in two tooth grooves symmetrical to the internal teeth or the internal splines, an internal micrometer is used for measuring the distance between the two measuring bars, for small-modulus and small-specification internal teeth or internal splines, due to space limitation, the measuring bars are inconvenient to fix, when the cross-bar distance is measured online, the measuring bars are easy to fall and swing, the cross-bar distance cannot be measured accurately online, a special go-and-no go gauge needs to be customized, the go-and-no go gauge can pass, the no go-and-no go gauge can indicate that the cross-bar distance is within a tolerance range, specific numerical values cannot be provided, accurate feed cannot be realized, and no measuring tool capable of quickly measuring the cross-bar distance of the small-bar or internal splines online and providing accurate readings is provided, the invention mainly solves the problem that the cross-rod distance of internal teeth or internal splines with small modulus and small specification is inconvenient to measure on line.
Disclosure of Invention
The invention aims to provide an internal tooth and internal spline span on-line rapid measuring tool, which solves the technical problems in the background technology.
The purpose of the invention can be realized by the following technical scheme:
an internal tooth and internal spline cross-rod distance online rapid measuring tool comprises a tool body, a tool frame is slidably mounted on the outer surface of the tool body, a second measuring jaw and a first measuring jaw are respectively mounted at the upper end and the lower end of the tool body, a fourth measuring jaw and a third measuring jaw are respectively mounted at the upper end and the lower end of the tool frame, a scale is mounted at the front end of the tool body, uniform scales are carved on the scale, a groove is formed in the front surface of the tool body, a rack and a depth scale are mounted in the groove, the rack is fixedly mounted in the groove, the depth scale covers the front surface of the rack, the depth scale can slide in the groove, a dial plate fixing plate is mounted at the front end of the tool frame, the tool body is positioned between the dial plate fixing plate and the tool frame, a stop block is fixed on the front surface of the tool body through a screw, a dial plate mechanism is arranged at the front end of the dial plate fixing plate, a connecting mechanism connected with the tool body is fixedly connected at the lower end of the tool frame, a second measuring jaw and a second measuring jaw are connected with a second measuring rod through taper pin, the lower ends of the first measuring claw and the third measuring claw are connected with a first measuring rod through taper pins.
As a further scheme of the invention: the depth gauge is connected with the rack in a sliding mode, the depth gauge is fixedly connected with the rear end of the dial plate fixing plate, the lower ends of the first measuring claw and the third measuring claw are located on the same horizontal plane, the upper ends of the second measuring claw and the fourth measuring claw are located on the same horizontal plane, the gauge body, the second measuring claw and the first measuring claw are of an integrated structure, and the gauge frame, the fourth measuring claw and the third measuring claw are of an integrated structure.
As a further scheme of the invention: the upper end of the ruler frame is in threaded connection with a fastening screw, a spring piece is arranged between the inner wall of the top end of the ruler frame and the upper surface of the ruler body, and the lower end of the fastening screw penetrates through the top end of the ruler frame and is in contact with the spring piece.
As a further scheme of the invention: the connecting mechanism comprises a first connecting block connected with the bottom of the ruler frame, a connecting screw used for fixing the first connecting block on the ruler frame is arranged at the lower end of the first connecting block, a second connecting block connected with the bottom of the ruler body in a sliding mode is connected to one side of the first connecting block, a limiting assembly is rotatably mounted at the upper end of the second connecting block, the first connecting block and the second connecting block are of an integrated structure, and the connecting mechanism is used for enabling the ruler frame to move on the ruler body.
As a further scheme of the invention: the limiting assembly comprises a rotary column, and discs are mounted at two ends of the rotary column.
The invention has the beneficial effects that:
1. in the invention, one of the two measuring rods is a group and is used in cooperation for measuring the span rod distance of the small module gear or the spline; the two measuring rods II are in a group and are matched for use, so that the measuring rod II is used for measuring the cross-rod distance of the medium-modulus gear or the spline, and can be used for large-batch processing contrast measurement.
2. Carry out optimal design to coupling mechanism's structure, the person of facilitating the use installs, changes, when pulling down coupling mechanism, the problem that drops can not appear in spacing subassembly to can change alone spacing subassembly under the condition of not dismantling connecting screw, and the mode of joint is compared in threaded connection more laborsaving when connecting with dismantling, and the cost time is shorter.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a front view of the overall construction of the present invention;
FIG. 2 is a front view of the coupling mechanism of the present invention;
fig. 3 is a top view of the connection mechanism of the present invention.
In the figure: 1. a ruler body; 2. a rack; 3. a scale; 4. measuring a first claw; 5. measuring a second claw; 6. measuring a third claw; 7. measuring a fourth claw; 8. measuring a first rod; 9. a second measuring rod; 10. fastening screws; 11. a dial plate fixing plate; 12. a depth gauge; 13. a stopper; 14. a connecting mechanism; 141. a first connecting block; 142. a connecting screw; 143. a second connecting block; 144. a limiting component; 1441. turning the column; 1442. a disk.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Referring to fig. 1-3, the invention is an internal tooth and internal spline span on-line rapid measuring tool, comprising a tool body 1, a tool frame is slidably mounted on the outer surface of the tool body 1, a second measuring jaw 5 and a first measuring jaw 4 are respectively mounted on the upper and lower ends of the tool body 1, a fourth measuring jaw 7 and a third measuring jaw 6 are respectively mounted on the upper and lower ends of the tool frame, a scale 3 is mounted on the front end of the tool body 1, uniform scales are carved on the scale 3, a groove is arranged on the front surface of the tool body 1, a rack 2 and a depth scale 12 are mounted in the groove, the rack 2 is fixedly mounted in the groove, the depth scale 12 covers the front surface of the rack 2, the depth scale 12 can slide in the groove, a dial fixing plate 11 is mounted on the front end of the tool frame, the tool body 1 is located between the dial fixing plate 11 and the tool frame, a stopper 13 is fixed on the front surface of the tool body 1 through a screw, a dial mechanism is arranged on the front end of the dial fixing plate 11, the lower end of the ruler frame is fixedly connected with a connecting mechanism 14 connected with the ruler body 1, the upper ends of the second measuring claw 5 and the fourth measuring claw 7 are connected with a second measuring rod 9 through taper pins, and the lower ends of the first measuring claw 4 and the third measuring claw 6 are connected with a first measuring rod 8 through taper pins.
The dial plate mechanism is the existing equipment, by gear drive mechanism, dial plate, gauge ring, pointer, dial plate screw, lens etc. make up, the rack 2 drives the gear in the gear drive mechanism to rotate, drive the pointer and show the numerical value, before using, rotate the dial plate, make the pointer point to the zero graduation line, and screw the dial plate screw, make the dial plate fix.
Dial plate fixing plate 11: the dial depth gauge is used for connecting the gauge body 1 with a dial mechanism, the rack 2 on the gauge body 1 is connected with a gauge needle through a gear transmission mechanism, and meanwhile, the depth gauge 12 is also fixed on the dial fixing plate 11.
And (2) the rack: the dial plate pointer is fixed on the ruler body 1, and when the ruler frame is moved, the dial plate pointer is driven to rotate through gear transmission.
Fastening the screw 10: the lower end of the ruler is in contact with the spring piece, the ruler frame is fixed after measurement is finished, the ruler frame is screwed downwards, pressure is applied to the spring piece, the spring piece is finally attached to the upper end of the ruler body 1, and a user can conveniently read the ruler through the ruler 3.
The stop block 13: when the ruler frame moves to the tail end of the ruler body 1, the ruler frame is prevented from sliding off the ruler body 1.
Depth gauge 12: the method can be used for measuring depth, such as the tooth width of a part.
Scale 3: is fixed on the ruler body 1 and is used for reading the moving distance of the ruler frame on the ruler body 1.
Depth chi 12 and 2 sliding connection of rack, depth chi 12 and dial plate fixed plate 11's rear end fixed connection, the lower extreme of measuring claw 4 and measuring claw three 6 is located same horizontal plane, and the upper end of measuring claw two 5 and measuring claw four 7 is located same horizontal plane, and chi body 1, measuring claw two 5 and measuring claw 4 formula structure as an organic whole, chi frame, measuring claw four 7 and measuring claw three 6 formula structures as an organic whole.
The upper end of the ruler frame is in threaded connection with a fastening screw 10, a spring piece is arranged between the inner wall of the top end of the ruler frame and the upper surface of the ruler body 1, and the lower end of the fastening screw 10 penetrates through the top end of the ruler frame and is in contact with the spring piece.
The connecting mechanism 14 comprises a first connecting block 141 connected with the bottom of the ruler frame, a connecting screw 142 used for fixing the first connecting block 141 on the ruler frame is arranged at the lower end of the first connecting block 141, a second connecting block 143 in sliding connection with the bottom end of the ruler body 1 is connected to one side of the first connecting block 141, a limiting component 144 is rotatably mounted at the upper end of the second connecting block 143, the first connecting block 141 and the second connecting block 143 are of an integrated structure, and the connecting mechanism 14 is used for enabling the ruler frame to move on the ruler body 1.
The limiting assembly 144 comprises a rotary column 1441, and discs 1442 are mounted at two ends of the rotary column 1441, and there are the following conditions:
the first condition is as follows: the equal fixed mounting in both ends of rotating post 1441 has disc 1442, is provided with on connecting block two 143 and supplies spacing subassembly 144 to carry out the pivoted rotation groove, is provided with on connecting block two 143 and supplies rotating post 1441 to carry out the pivoted rotation groove promptly, then rotating post 1441 is located and rotates inslot portion, only both ends expose in the outside of connecting block two 143, such design is when the integral type structure that connecting block one 141 and connecting block two 143 are constituteed or change spacing subassembly 144, need change coupling mechanism 14 wholly.
Case two: the disc 1442 is connected to two ends of the rotary column 1441 in a clamping mode or in a threaded mode, a rotating groove for the limiting assembly 144 to rotate is formed in the second connecting block 143, namely the rotating groove for the rotary column 1441 to rotate is formed in the second connecting block 143, the rotary column 1441 is located inside the rotating groove, only two end portions of the rotary column 1441 are exposed outside the second connecting block 143, the rotary column 1441 and the disc 1442 can be replaced respectively through the design, and it needs to be mentioned that the rotary column 1441 and the disc 1442 can be fixed through screws after the clamping mode or the threaded connection in order to avoid the problem that the disc 1442 falls off.
Case three: the both ends of rotary column 1441 are equal fixed mounting has disc 1442, and the upper end of connecting block two 143 is provided with and supplies spacing subassembly 144 to carry out the pivoted rotation groove, and connecting block two 143's upper end is provided with and supplies rotary column 1441 to carry out the pivoted rotation groove promptly, then the both ends and the upper surface of rotary column 1441 all expose in the outside of connecting block two 143, have following two kinds of selections: alternatively, the width of the opening at the upper end of the rotating groove is smaller than the diameter of the rotating column 1441; selecting two, the width of the opening at the upper end of the rotating groove is not less than the diameter of the rotating column 1441; in the first option, the same situation as the first option still exists, and when the integral structure formed by the first connecting block 141 and the second connecting block 143 or the limiting assembly 144 needs to be replaced, the connecting mechanism 14 needs to be replaced as a whole, but in the second option, the rotary post 1441 can be easily taken out of the rotary groove, so that the limiting assembly 144 can be replaced independently, and it should be noted that in the first option, when the connecting mechanism 14 is detached, the limiting assembly 144 is easy to fall off.
Case four: the both ends of rotary column 1441 all joint or threaded connection have disc 1442, and the upper end of connecting block two 143 is provided with and supplies spacing subassembly 144 to carry out the pivoted and rotate the groove, and connecting block two 143's upper end is provided with and supplies rotary column 1441 to carry out the pivoted and rotate the groove promptly, then rotary column 1441's both ends and upper surface all expose in connecting block two 143's outside, have following two kinds of choices: thirdly, the width of the opening at the upper end of the rotating groove is smaller than the diameter of the rotating column 1441; selecting four, wherein the width of the opening at the upper end of the rotating groove is not less than the diameter of the rotating column 1441; in the third and fourth options, the limiting assembly 144 can be replaced independently, but in the fourth option, when the connecting mechanism 14 is detached, the limiting assembly 144 is prone to falling off, and in the same way as the second option, in order to avoid the problem that the disc 1442 falls off in the using process, the rotary column 1441 and the disc 1442 can be fixed through screws after being clamped or connected in a threaded manner.
In summary, in the embodiment of the present invention, preferably, a third option is selected from the fourth option, and the most preferable connection manner of the rotary post 1441 and the disc 1442 is clamping, and meanwhile, in order to avoid the problem that the disc 1442 falls off during use, the rotary post 1441 and the disc 1442 can be fixed by a screw after clamping or screwing, in a preferred case, when the connection mechanism 14 is detached, the problem that the limiting assembly 144 falls off does not occur, and the limiting assembly 144 can be replaced separately without detaching the connection screw 142, and in use, the rotary post 1441 in the limiting assembly 144 is in rolling connection with the bottom end of the blade 1, so that the blade frame can move on the blade 1 conveniently, and in an optimal option, the clamping manner is more labor-saving and shorter time than the screwing connection and detachment.
Measuring bar in the examples: the gear span length measuring device is used for measuring the gear span length and is arranged on the ruler body 1 and the ruler frame, the measuring rods are connected with the ruler body 1 and the ruler frame through taper pins, when the ruler body 1 and the ruler frame are aligned and reset to zero, the centers of two holes for installing the taper pins on the ruler body 1 and the ruler frame are fixed values, the diameter of the measuring rods can be replaced according to the measurement requirement, and the two measuring rods 8 are in a group and are matched for use and used for measuring the span length of the small-module gears or the spline; the two measuring rods 9 are in a group and are used in cooperation, so that the measuring rod is used for measuring the rod span distance of the medium-modulus gear or the spline, and can be used for large-batch machining contrast measurement.
Before measurement, a proper measuring rod is selected according to a measured part, the ruler body 1 and the two measuring rods I8 on the ruler frame are taken as a group, the ruler body 1 and the two measuring rods II 9 on the ruler frame are taken as a group, taking the measuring rods II 9 as an example,
slowly promote or pull the chi frame, make two 9 gauge rods and the flank of tooth of the part of measurationing lightly contact to make its contact good, then screw fastening screw 10 down, exert pressure to the spring leaf, finally make the spring leaf hug closely in the upper end of blade 1, fix this device wholly, convenient to use person carries out the reading through scale 3.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. An internal tooth and internal spline cross-bar distance online rapid measuring tool comprises a tool body (1) and is characterized in that a tool frame is slidably mounted on the outer surface of the tool body (1), a measuring claw II (5) and a measuring claw I (4) are respectively mounted at the upper end and the lower end of the tool body (1), a measuring claw IV (7) and a measuring claw III (6) are respectively mounted at the upper end and the lower end of the tool frame, a scale (3) is mounted at the front end of the tool body (1), a groove is formed in the front surface of the tool body (1), a rack (2) and a depth scale (12) are mounted in the groove, a dial plate fixing plate (11) is mounted at the front end of the tool frame, a stop block (13) is fixed on the front surface of the tool body (1) through a screw, a dial plate mechanism is arranged at the front end of the dial plate fixing plate (11), and a connecting mechanism (14) connected with the tool body (1) is fixedly connected to the lower end of the tool frame, the upper ends of the second measuring claw (5) and the fourth measuring claw (7) are connected with a second measuring rod (9), and the lower ends of the first measuring claw (4) and the third measuring claw (6) are connected with a first measuring rod (8).
2. The internal tooth and internal spline span online rapid measuring tool according to claim 1, characterized in that the depth gauge (12) is connected with the rack (2) in a sliding manner, and the depth gauge (12) is fixedly connected with the rear end of the dial plate fixing plate (11).
3. The internal tooth and internal spline span online rapid measuring tool according to claim 1, wherein the lower ends of the first measuring jaw (4) and the third measuring jaw (6) are located on the same horizontal plane.
4. The internal tooth and internal spline span online rapid measuring tool according to claim 1, wherein the upper ends of the second measuring jaw (5) and the fourth measuring jaw (7) are located on the same horizontal plane.
5. The internal tooth and internal spline span on-line rapid measuring tool according to claim 1, characterized in that the tool body (1), the measuring jaw two (5) and the measuring jaw one (4) are of an integrated structure.
6. The internal tooth and internal spline span on-line rapid measuring tool according to claim 1, characterized in that the tool frame, the measuring jaw four (7) and the measuring jaw three (6) are of an integrated structure.
7. The internal tooth and internal spline span online rapid measuring tool according to claim 1, wherein the upper end of the scale frame is in threaded connection with a fastening screw (10), a spring piece is arranged between the inner wall of the top end of the scale frame and the upper surface of the scale body (1), and the lower end of the fastening screw (10) penetrates through the top end of the scale frame and is in contact with the spring piece.
8. The internal tooth and internal spline span online rapid measuring tool according to claim 1, wherein the connecting mechanism (14) comprises a first connecting block (141) connected with the bottom of the ruler frame, a connecting screw (142) used for fixing the first connecting block (141) on the ruler frame is arranged at the lower end of the first connecting block (141), a second connecting block (143) connected with the bottom end of the ruler body (1) in a sliding manner is connected to one side of the first connecting block (141), and a limiting component (144) is rotatably mounted at the upper end of the second connecting block (143).
9. An internal tooth, internal spline span online rapid gauge according to claim 8, wherein the limiting assembly (144) comprises a rotating post (1441), and discs (1442) are mounted on both ends of the rotating post (1441).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012474.4A CN113654443A (en) | 2021-08-31 | 2021-08-31 | Internal tooth and internal spline span on-line rapid measurement measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111012474.4A CN113654443A (en) | 2021-08-31 | 2021-08-31 | Internal tooth and internal spline span on-line rapid measurement measuring tool |
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| CN113654443A true CN113654443A (en) | 2021-11-16 |
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| CN202111012474.4A Pending CN113654443A (en) | 2021-08-31 | 2021-08-31 | Internal tooth and internal spline span on-line rapid measurement measuring tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111491A (en) * | 2021-11-22 | 2022-03-01 | 四川名齿齿轮制造股份有限公司 | Vernier caliper and method for measuring distance between internal spline rods |
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| CN212843244U (en) * | 2020-09-27 | 2021-03-30 | 云浮市中等专业学校 | Dial caliper with force measuring device |
| CN214010140U (en) * | 2020-11-17 | 2021-08-20 | 中铁十二局集团电气化工程有限公司 | Standard caliper rule convenient for wiring |
Cited By (1)
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| CN114111491A (en) * | 2021-11-22 | 2022-03-01 | 四川名齿齿轮制造股份有限公司 | Vernier caliper and method for measuring distance between internal spline rods |
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