CN201724641U - Inner arc radius measuring instrument - Google Patents
Inner arc radius measuring instrument Download PDFInfo
- 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
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- 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
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- Length-Measuring Instruments Using Mechanical Means (AREA)
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
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.
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
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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225155A (en) * | 2018-02-01 | 2018-06-29 | 中车株洲电机有限公司 | Suitable for the measurement tooling and method of large scale radius |
| 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 |
-
2010
- 2010-06-03 CN CN 201020213754 patent/CN201724641U/en not_active Expired - Lifetime
Cited By (5)
| 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 |
| CN108225155A (en) * | 2018-02-01 | 2018-06-29 | 中车株洲电机有限公司 | Suitable for the measurement tooling and method of large scale radius |
| CN108225155B (en) * | 2018-02-01 | 2023-07-04 | 中车株洲电机有限公司 | Measuring tool and method suitable for large-size radius |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |
|
| CX01 | Expiry of patent term |