CN201724641U - Inner arc radius measuring instrument - Google Patents

Inner arc radius measuring instrument Download PDF

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Publication number
CN201724641U
CN201724641U CN 201020213754 CN201020213754U CN201724641U CN 201724641 U CN201724641 U CN 201724641U CN 201020213754 CN201020213754 CN 201020213754 CN 201020213754 U CN201020213754 U CN 201020213754U CN 201724641 U CN201724641 U CN 201724641U
Authority
CN
China
Prior art keywords
main scale
vernier
scale
inner arc
measuring instrument
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 201020213754
Other languages
Chinese (zh)
Inventor
邓超云
张栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Longchang Materials Co Ltd
Original Assignee
China Railway Longchang Materials Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway Longchang Materials Co Ltd filed Critical China Railway Longchang Materials Co Ltd
Priority to CN 201020213754 priority Critical patent/CN201724641U/en
Application granted granted Critical
Publication of CN201724641U publication Critical patent/CN201724641U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses an inner arc radius measuring instrument, which comprises a main scale. A spherical main scale measuring head is arranged at the head of the main scale, a T-shaped vernier is sleeved onto the main scale and includes a horizontal section and a vertical section, the vertical section is arranged on a perpendicular bisector of the horizontal section, the vertical section is sleeved outside the main scale and can slide relative to the main scale, and spherical vernier measuring heads are disposed at two ends of the horizontal section of the vernier and used for contacting with the surface of a measured arc. The inner arc radius measuring instrument has the advantages that the main scale and the vernier are in sliding fit with each other so that the spherical measuring heads of the main scale and the vernier can finely contact with the measured inner arc, cord height of the measured inner arc can be conveniently measured, the radius of the arc can be calculated according to formulas, and the inner arc radius measuring instrument is simple in structure, easy in production and fabrication, and convenient in use.

Description

The inner arc radius measuring instrument
Technical field
The utility model relates to a kind of inner arc radius measuring instrument.
Background technology
It is the comparison of arc model that the now actual inner arc radius that uses is measured what all adopt, can only judge measured circular arc whether in intended scope, and can not know arc radius numerical value.
The utility model content
The utility model has overcome shortcoming of the prior art, and a kind of measuring instrument that is exclusively used in the bigger inner arc radius of measurement is provided, and is simple in structure, produce easily and make, and easy to use.
The technical solution of the utility model is: a kind of inner arc radius measuring instrument, comprise main scale, and described main scale head is the main scale gauge head, is shaped as sphere; Be with the vernier scale that is shaped as T shape on described main scale, described vernier scale comprises horizontal segment and vertical section, and vertical section is positioned on the perpendicular bisector of horizontal segment, and vertical section is enclosed within outside the main scale, and can slide with respect to main scale; Be provided with the vernier scale gauge head at the two ends of vernier scale horizontal segment, be shaped as sphere, be used to contact the surface of measured circular arc.
Described vernier scale is the liquid crystal vernier caliper, has LCD, is solidified with the circuit of computing formula function in described LCD, and described computing formula is
Compared with prior art, the utility model has the advantages that: by being slidingly matched of main scale and vernier scale, make the spheric probe of main scale and vernier scale can contact tested interior circular arc well, measure the action of tested interior circular arc easily, thereby calculate arc radius according to formula.Simultaneously, because the spheric probe of main scale and vernier scale is sphere, make the face contact or line contact a becoming contact of general measuring appliance, some contact specific surface contact or line contact when measuring arc surface is more accurate.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is a fundamental diagram of the present utility model;
Fig. 2 is that the utility model does not have the front view that liquid crystal shows;
Fig. 3 is the front view of the utility model band liquid crystal display.
Embodiment
A kind of inner arc radius measuring instrument as shown in Figure 2, comprising: main scale 1, vernier scale 2, main scale gauge head 3, vernier scale gauge head 4.
Main scale 1 is the ruler of a band scale, and its head is a main scale gauge head 3, is shaped as sphere, is used to contact the surface of measured circular arc.
Vernier scale 2 is as vernier, and it is shaped as T shape, comprises horizontal segment and vertical section, and vertical section is positioned on the perpendicular bisector of horizontal segment, and vertical section is enclosed within outside the main scale 1, and can slide over each other with main scale 1; Two ends at vernier scale 2 horizontal segments are provided with vernier scale gauge head 4, are shaped as sphere, are used to contact the surface of measured circular arc.
In order when measuring, just in time to obtain measurement result, vernier scale 2 also can adopt existing liquid crystal vernier caliper, realize by in LCD, increasing the circuit that is solidified with the computing formula function, as shown in Figure 3: a kind of inner arc radius measuring instrument comprises: main scale 1, vernier scale 2, main scale gauge head 3, vernier scale gauge head 4, band computing function LCD 5.Survey during measurement Directly input to band computing function LCD 5, in band computing function LCD 5 inside according to formula: ( For known), carry out computing, obtain the arc radius of surveying , and by band computing function LCD 5 demonstration radius readings.
Principle of work of the present utility model as shown in Figure 1, (length is 2 by being with fixedly chord length ) vernier scale 2 and the same circular section of measured circular arc circular arc on 2 points that contact, determine fixedly chord length 2 By adjusting the gauge head of main scale 1, contact again, measure fixedly chord length 2 with the same circular section of measured circular arc circular arc The action of corresponding radian , utilize formula again: , just can obtain the arc radius of surveying

Claims (2)

1. an inner arc radius measuring instrument comprises main scale, it is characterized in that: described main scale head is the main scale gauge head, is shaped as sphere; Be with the vernier scale that is shaped as T shape on described main scale, described vernier scale comprises horizontal segment and vertical section, and vertical section is positioned on the perpendicular bisector of horizontal segment, and vertical section is enclosed within outside the main scale, and can slide with respect to main scale; Be provided with the vernier scale gauge head at the two ends of vernier scale horizontal segment, be shaped as sphere, be used to contact the surface of measured circular arc.
2. inner arc radius measuring instrument according to claim 1 is characterized in that: described vernier scale is the liquid crystal vernier caliper, has LCD, is solidified with the circuit of computing formula function in described LCD, and described computing formula is
CN 201020213754 2010-06-03 2010-06-03 Inner arc radius measuring instrument Expired - Lifetime CN201724641U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201020213754 CN201724641U (en) 2010-06-03 2010-06-03 Inner arc radius measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201020213754 CN201724641U (en) 2010-06-03 2010-06-03 Inner arc radius measuring instrument

Publications (1)

Publication Number Publication Date
CN201724641U true CN201724641U (en) 2011-01-26

Family

ID=43492978

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201020213754 Expired - Lifetime CN201724641U (en) 2010-06-03 2010-06-03 Inner arc radius measuring instrument

Country Status (1)

Country Link
CN (1) CN201724641U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108871152A (en) * 2017-05-08 2018-11-23 上海纳川核能新材料技术有限公司 A kind of internal diameter of the pipeline measuring device and method
CN112525048A (en) * 2020-11-17 2021-03-19 宝武集团马钢轨交材料科技有限公司 Checking method for center deviation of upper die and lower die of forging die
CN112556531A (en) * 2020-11-17 2021-03-26 宝武集团马钢轨交材料科技有限公司 Detection device for train wheel forming forging die and application method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108871152A (en) * 2017-05-08 2018-11-23 上海纳川核能新材料技术有限公司 A kind of internal diameter of the pipeline measuring device and method
CN112525048A (en) * 2020-11-17 2021-03-19 宝武集团马钢轨交材料科技有限公司 Checking method for center deviation of upper die and lower die of forging die
CN112556531A (en) * 2020-11-17 2021-03-26 宝武集团马钢轨交材料科技有限公司 Detection device for train wheel forming forging die and application method thereof

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20110126

CX01 Expiry of patent term