CN202853513U - Vernier caliper used for internal diameter measurement - Google Patents

Vernier caliper used for internal diameter measurement Download PDF

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Publication number
CN202853513U
CN202853513U CN 201220442704 CN201220442704U CN202853513U CN 202853513 U CN202853513 U CN 202853513U CN 201220442704 CN201220442704 CN 201220442704 CN 201220442704 U CN201220442704 U CN 201220442704U CN 202853513 U CN202853513 U CN 202853513U
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CN
China
Prior art keywords
vernier
measuring
scale
measuring head
main scale
Prior art date
Application number
CN 201220442704
Other languages
Chinese (zh)
Inventor
贾东方
Original Assignee
上海联影医疗科技有限公司
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Application filed by 上海联影医疗科技有限公司 filed Critical 上海联影医疗科技有限公司
Priority to CN 201220442704 priority Critical patent/CN202853513U/en
Application granted granted Critical
Publication of CN202853513U publication Critical patent/CN202853513U/en

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Abstract

The utility model discloses a vernier caliper used for the internal diameter measurement. The vernier caliper includes a main scale, a movable guide rod, and a vernier scale. The movable guide rod is fixedly connected with the vernier scale. One end of the main scale is provided with a limiting end, and the other end is provided with a first measuring head. One end of the movable guide rod passes through the limiting end and then is slidingly sleeved in the main scale and is fixedly connected with the vernier scale, and the other end is provided with a second measuring head. The end face of the first measuring head is arc-shaped. For the vernier caliper used for the internal diameter measurement, the external end of the main scale is provided with the first measuring head of which the end face is arc-shaped, and the arc-shaped end face of the first measuring head presses against an internal wall of a measured hole, so the internal diameter of the measured hole at any depth can be measured conveniently, and the measuring range is large, the precision is high.

Description

The vernier caliper that is used for inner diameter measurement
Technical field
The utility model relates to a kind of vernier caliper, relates in particular to a kind of vernier caliper for inner diameter measurement.
Background technology
The at present measurement for the aperture mainly contains following several method:
1) with the vernier caliper of inner measuring jaw: this method is simple, but this is multiplex in the measurement of small-bore, its scope of measuring the aperture is limited by the length of vernier caliper, and can only measure the internal diameter of nose end, can not measure the internal diameter at measured hole arbitrary section place.
2) micrometer inside caliper: its length of measuring internal diameter is limited by the length of internal diameter chi equally, although can measure the aperture of measured hole arbitrary section, the market cost is generally higher, and its rig-site utilization has been subject to certain restriction.
3) dial bore gage: it can effectively be measured measured hole internal diameter cross section, but its range is limited, is fit to the following inside diameter measurement of 500mm more.
4) three-coordinates measuring machine: it can finish the measurement to any place aperture, but it measures relative complex, and its cost is comparatively expensive, and a lot of aperture precision are required to seem that in the measurement of 0.1mm practicality is not strong.
5) meter ruler: its method is the simplest, but measuring accuracy is lower, and is difficult to effectively measure at the measured hole internal diameter.
Therefore the inner diameter measurement of existing large aperture object exists measures inconvenience, and therefore the problem that precision is low, is necessary the vernier caliper that is used for inner diameter measurement that provides new.
The utility model content
Technical problem to be solved in the utility model provides a kind of vernier caliper for inner diameter measurement, can measure easily the internal diameter size of any depth of measured hole, and the measurement range is large and precision is high.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to provide a kind of vernier caliper for inner diameter measurement, comprise main scale, moving leader and vernier scale, described moving leader and vernier scale are fixedly linked, wherein, one end of described main scale is provided with and limits end, the other end is provided with the first measuring head, one end of described moving leader pass limit that end is slidingly socketed in main scale and and vernier scale be fixedly linked, the other end is provided with the second measuring head, and the end face of described the first measuring head is circular shape.
Further, the end face of described the second measuring head is circular shape.
Further, described the first measuring head is provided with the first outer measuring jaw, is provided with the second outer measuring jaw on the described vernier scale, and the described first outer measuring jaw and the second outer measuring jaw are arranged on mutually the same side of main scale.
Further, described the first measuring head is provided with the 3rd outer measuring jaw, and described vernier scale is provided with all round measuring jaw and the described first outer measuring jaw and the 3rd outer measuring jaw, the second outer measuring jaw and the measuring jaw is symmetrical up and down about main scale respectively all round.
Further, described moving leader and vernier scale are fixedly linked by lock-screw.
Further, described main scale is fixedly linked by lock-screw and restriction end, and described restriction end is provided with holding screw.
Further, the material of described main scale, moving leader and vernier scale is stainless steel or aluminium alloy.
The utility model contrast prior art has following beneficial effect: the vernier caliper that is used for inner diameter measurement that the utility model provides, be provided with the first measuring head that end face is circular shape by the outer end at main scale, the end face of the first measuring head is circular shape and the measured hole inwall offsets together, thereby measure easily the internal diameter size of any depth of measured hole, the measurement range is large and precision is high.
Description of drawings
Fig. 1 is the vernier caliper structural representation that the utility model is used for inner diameter measurement;
Fig. 2 is the main scale measuring head structural representation of the utility model vernier caliper;
Fig. 3 is the moving leader measuring head structural representation of the utility model vernier caliper;
View when Fig. 4 is the utility model vernier caliper measurement aperture.
Among the figure:
1 main scale, 2 moving leaders, 3 vernier scales
4 limit end 51 first lock-screws 52 second lock-screws
6 holding screws, 71 first outer measuring jaw 72 second outer measuring jaws
73 the 3rd outer measuring jaws 74 are measuring jaw 8 first measuring heads all round
9 second measuring heads, 10 measured holes
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 is the vernier caliper structural representation that the utility model is used for inner diameter measurement.
See also Fig. 1, the vernier caliper that is used for inner diameter measurement that the utility model provides comprises main scale 1, moving leader 2 and vernier scale 3, moving leader 2 and vernier scale 3 are fixedly linked, wherein, one end of main scale 1 is provided with and limits end 4, the other end is provided with the first measuring head 8, one end of moving leader 2 passes and limits that end 4 is slidingly socketed main scale 1 in also and vernier scale 3 is fixedly linked, thereby can move relative to main scale 1 together with vernier scale 3, the end face that the other end is provided with the second measuring head 9, the first measuring heads 8 and the second measuring head 9 is circular shape.
The vernier caliper that is used for inner diameter measurement that the utility model provides, wherein carve a minute chi scale (1mm one lattice) above the main scale 1, can be up and down two kinds of units (being generally international unit value and English unit), and be fixedly linked together by the second lock-screw 52 with limiting end 4, as shown in Figure 3; Please continue referring to Fig. 1, the first measuring head 8 of main scale 1 is distributed with the first outer measuring jaw 71 and the second outer measuring jaw 72 with mutually the same side correspondence on the vernier scale 3, preferably, the up and down both sides of the first measuring head 8 are respectively arranged with the first outer measuring jaw 71 and the 3rd outer measuring jaw 73, the up and down both sides of vernier scale 3 are respectively arranged with all round measuring jaw 74 of the second outer measuring jaw 72 and, and the first outer measuring jaw 71 and the 3rd outer measuring jaw 73, the second outer measuring jaw 72 and measuring jaw 74 is symmetrical about in the of 1 about main scale respectively all round.See also Fig. 2, moving leader 2 and vernier scale 3 are fixed together by the first lock-screw 51, and vernier scale 3 is marked with vernier graduation (being generally 10,20,50 lattices).For the ease of the location in the measuring process, limit on the end 4 holding screw 6 is installed, as shown in Figure 3.The first measuring head 8 of two circular shapes and the second measuring head 9 can be effectively and the inwall of measured hole fit so that slide calliper rule are in the diametrical position in aperture, and then can by multimetering, record the mean value of the internal diameter of measured hole 10.The vernier caliper that the utility model provides, simple in structure, the structure that does not need other additional complexity, therefore, with the environment than high-intensity magnetic field, can adopt the common used material manufacturings such as stainless steel, aluminium alloy for MR, and then so that slide calliper rule can be in high-intensity magnetic field surveying work, and slide calliper rule are cheap, use simple.
View when Fig. 4 is the utility model vernier caliper measurement aperture.
Please continue referring to Fig. 4, when needs carry out inside diameter measurement for measured hole 10, first holding screw 6 is unclamped, then these slide calliper rule are put into measured hole 10, adjust the position that needs the inner radius of surveying, guarantee the graduated surface of slide calliper rule mark and axially bored line approximate vertical, again the first measuring head 8 of main scale 1 is compressed with hole wall that (strength is unsuitable excessive, just to contact as best), constantly adjust moving leader 2 this moment, and keep the second measuring head 9 on it to contact with the hole inwall, and reading and note down wherein maximum measured value by vernier scale 3 and main scale 1, this measured value is the aperture value at this place; In addition, for the ease of reading, can the first measuring head 8 and the second measuring head 9 positions adjust complete after, then locking holding screw 6 takes off reading and gets final product.Wherein, the zero point of main scale 1 and vernier scale 3 initial positions is when aliging, be the minimum measured value of slide calliper rule apart from d1 between the circular arc summit of the first measuring head 8 and the second measuring head 9, main scale 1 scale range d2 is the measurement range difference, and namely the measurement range of slide calliper rule is d1~d1+d2.In addition, the first outer measuring jaw 71 that arranges on main scale 1 and the moving leader 2 and the second outer measuring jaw 72, the 3rd outer measuring jaw 73 and the be measuring jaw 74 all round, can carry out the measurement of other exterior object sizes, is not confined to the internal diameter size of measured hole, and be simple and convenient.
In sum, the vernier caliper that is used for inner diameter measurement that the utility model provides, the outer end of main scale 1 and moving leader 2 is respectively arranged with the first measuring head 8 and the second measuring head 9, and the end face of described the first measuring head 8 and the second measuring head 9 is circular shape and hole inwall and offsets and be in the same place, thereby measure easily the internal diameter size of any depth of measured hole, measuring range can be greater than 500mm, and measuring accuracy is high, fully satisfies the measurement needs of various Large Aperture Inner Diameters.When the second measuring head is non-circular shape, contact with the hole inwall, also can reach above-mentioned measurement effect.
Although the utility model discloses as above with preferred embodiment; so it is not to limit the utility model; any those skilled in the art; within not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.

Claims (7)

1. vernier caliper that is used for inner diameter measurement, comprise main scale (1), moving leader (2) and vernier scale (3), described moving leader (2) and vernier scale (3) are fixedly linked, it is characterized in that, one end of described main scale (1) is provided with and limits end (4), the other end is provided with the first measuring head (8), one end of described moving leader (2) passes and limits that end (4) is slidingly socketed main scale (1) in also and vernier scale (3) is fixedly linked, the other end is provided with the second measuring head (9), and the end face of described the first measuring head (8) is circular shape.
2. the vernier caliper for inner diameter measurement as claimed in claim 1 is characterized in that, the end face of described the second measuring head (9) is circular shape.
3. the vernier caliper for inner diameter measurement as claimed in claim 1 or 2, it is characterized in that, described the first measuring head (8) is provided with the first outer measuring jaw (71), be provided with the second outer measuring jaw (72) on the described vernier scale (3), and the described first outer measuring jaw (71) and the second outer measuring jaw (72) are arranged on mutually the same side of main scale (1).
4. the vernier caliper for inner diameter measurement as claimed in claim 3, it is characterized in that, described the first measuring head (8) is provided with the 3rd outer measuring jaw (73), described vernier scale (3) is provided with the measuring jaw (74) all round, and the described first outer measuring jaw (71) and the 3rd outer measuring jaw (73), the second outer measuring jaw (72) and measuring jaw (74) is symmetrical up and down about main scale (1) respectively all round.
5. the vernier caliper for inner diameter measurement as claimed in claim 1 is characterized in that, described moving leader (2) and vernier scale (3) are fixedly linked by the first lock-screw (51).
6. the vernier caliper for inner diameter measurement as claimed in claim 1 is characterized in that, described main scale (1) is fixedly linked by the second lock-screw (52) and restriction end (4), and described restriction end (4) is provided with holding screw (6).
7. the vernier caliper for inner diameter measurement as claimed in claim 1 is characterized in that, the material of described main scale (1), moving leader (2) and vernier scale (3) is stainless steel or aluminium alloy.
CN 201220442704 2012-08-31 2012-08-31 Vernier caliper used for internal diameter measurement CN202853513U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220442704 CN202853513U (en) 2012-08-31 2012-08-31 Vernier caliper used for internal diameter measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220442704 CN202853513U (en) 2012-08-31 2012-08-31 Vernier caliper used for internal diameter measurement

Publications (1)

Publication Number Publication Date
CN202853513U true CN202853513U (en) 2013-04-03

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CN 201220442704 CN202853513U (en) 2012-08-31 2012-08-31 Vernier caliper used for internal diameter measurement

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103234427A (en) * 2013-04-16 2013-08-07 江苏凌飞锻造有限公司 Quick deep hole inner diameter measurement device
CN103383231A (en) * 2013-07-22 2013-11-06 南京三邦金属复合材料有限公司 Expansion joint inner diameter measuring device
CN108592754A (en) * 2018-06-26 2018-09-28 江苏理工学院 A kind of deep hole internal diameter detection instrument
CN110567343A (en) * 2019-09-27 2019-12-13 内蒙古第一机械集团股份有限公司 Distance measuring method
WO2020233375A1 (en) * 2019-05-21 2020-11-26 金华市精工工具制造有限公司 Internal-dimension vernier caliper

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103234427A (en) * 2013-04-16 2013-08-07 江苏凌飞锻造有限公司 Quick deep hole inner diameter measurement device
CN103383231A (en) * 2013-07-22 2013-11-06 南京三邦金属复合材料有限公司 Expansion joint inner diameter measuring device
CN108592754A (en) * 2018-06-26 2018-09-28 江苏理工学院 A kind of deep hole internal diameter detection instrument
WO2020233375A1 (en) * 2019-05-21 2020-11-26 金华市精工工具制造有限公司 Internal-dimension vernier caliper
CN110567343A (en) * 2019-09-27 2019-12-13 内蒙古第一机械集团股份有限公司 Distance measuring method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130403

Termination date: 20140831

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