CN2938024Y - Spherical curvature radius measuring instrument - Google Patents
Spherical curvature radius measuring instrument Download PDFInfo
- Publication number
- CN2938024Y CN2938024Y CN 200620017626 CN200620017626U CN2938024Y CN 2938024 Y CN2938024 Y CN 2938024Y CN 200620017626 CN200620017626 CN 200620017626 CN 200620017626 U CN200620017626 U CN 200620017626U CN 2938024 Y CN2938024 Y CN 2938024Y
- Authority
- CN
- China
- Prior art keywords
- measuring
- milscale
- curvature radius
- measuring instrument
- support
- 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
Links
Abstract
The utility model relates to a measuring instrument for measuring the radius of spherical curvature, comprising a bracket, three measuring rods with ball heads and a micrometer. The jacket for the measuring arm of the micrometer is fixed and connected with the middle part of the bracket, and the free end of the measuring arm extends out of the bracket. The three measuring rods are fixed and connected with the bracket. The ball heads of the three measuring rods are arranged on the circumference taken a measuring head of the measuring arm of the micrometer as a circle center. The utility model is simple in structure and can directly measure the spherical curvature of the measured products without necessity to adjust the three measuring rods.
Description
Technical field
The utility model relates to a kind of sphere curvature radius measuring instrument, especially relate to a kind of hand-holdable measurement, simple in structure, measure spheric curvature measuring instrument easily.
Background technology
In commercial production and product maintenance process, often to measure, for example automobile rearview mirror the sphere curvature radius of some sphere products.Because the restriction of use occasion, measure the instrument of sphere curvature radius and want hand-holdable measurement radius-of-curvature, China's utility model patent instructions 86201617 has been announced a kind of direct-reading sphere diameter mircrometer gauge and direct-reading sphere diameter instrument, they all are equipped with the measuring staff of three dribbling heads, make the survey ring of radius continuous variable with the measuring staff interlock, the milscale of sphere curvature radius directly is shown, this surveys the cam of ring by band spiral of Archimedes groove, the guide rail that can in the wire casing of this cam, slide, the slide block that can slide in this guide rail is formed, measuring staff is fixed on the slide block, needing to regulate the gauge head that the bulb of three measuring staffs is in milscale in each measuring process is on the circumference in the center of circle, complex operation, complex structure.
The utility model content
In view of above-mentioned deficiency, fundamental purpose of the present utility model be to provide a kind of hand-holdable measurement, simple in structure, measure spheric curvature measuring instrument easily.
The purpose of this utility model is achieved through the following technical solutions:
A kind of sphere curvature radius measuring instrument of the utility model comprises the measuring staff and the milscale of support, three dribbling heads; The test arm overcoat of this milscale is fixedly connected on this mid-stent, and the free end of its test arm stretches out this support; These three measuring staffs are fixedly connected on this support, and the gauge head that the bulb of these three measuring staffs is positioned at the test arm of this milscale is on the circumference in the center of circle.
On the said structure basis, wherein:
Described mid-stent offers the center pit that runs through, and the hole wall lower end of this center pit is fixedly connected with the truncated cone-shaped bolt of hollow and opening; The free end diameter of this bolt is less, is bolted with inner chamber and the corresponding set nut of this bolt profile on it; The test arm overcoat of described milscale passes this center pit card to be ended in the inner chamber of this bolt; The test arm free end of this milscale stretches out this bolt lower surface.
It also comprises three lock-screws; Described measuring staff has bulb end and stiff end, and the end face middle part of this stiff end offers screw; Offer three shoulder holes on the described support, these three stepped pore distribution with the circumference of this center pit concentric on; The stiff end of this measuring staff inserts the big portion of this shoulder hole diameter and replaces on ladder; The screw rod of this lock-screw passes this shoulder hole diameter smaller part and is screwed into this screw, and its spiral shell emits card to end on this support.
Wherein the bulb end of two described measuring staffs and stiff end are eccentric is provided with.
Described three shoulder holes are distributed on the described support, and with the circumference of center pit concentric.
Advantage of the present utility model is, a kind of sphere curvature radius measuring instrument of the utility model, because three measuring staffs are fixedly connected on this support, the gauge head that the bulb of these three measuring staffs is positioned at the test arm of this milscale is on the circumference in the center of circle, need not to regulate the spheric curvature that three measuring staffs just can directly be measured test product, and simple in structure.
Description of drawings
In order to be easy to explanation, the utility model is described in detail by following preferred embodiment and accompanying drawing.
Fig. 1 is the cross-sectional schematic of facing of a kind of sphere curvature radius measuring instrument of the utility model.
Fig. 2 is the partial schematic sectional view of the support of a kind of sphere curvature radius measuring instrument of the utility model.
Fig. 3 is that the B-B of Fig. 2 is to cross-sectional schematic.
Fig. 4 is the partial schematic sectional view of the set nut of a kind of sphere curvature radius measuring instrument of the utility model.
Fig. 5 is the measuring principle figure of a kind of sphere curvature radius measuring instrument of the utility model.
Embodiment
See also Fig. 1, a kind of sphere curvature radius measuring instrument of the utility model comprises measuring staff 2, set nut 3, lock-screw 4 and the milscale 5 of support 1, three dribbling heads.
See also Fig. 2 and Fig. 3, support 1 middle part offers the center pit 10 that runs through, the hole wall lower end of this center pit 10 is fixedly connected with bolt 11 by welding, mode such as one-body molded, and this bolt 11 is truncated cone-shaped, hollow and offers three open slots 12, the less and opening of its free-ended diameter; Be to be evenly equipped with three shoulder holes 18 on the circumference in the center of circle with center pit 10 on the support 1, the big portion 17 of this shoulder hole diameter and these bolt 11 homonymies; See also Fig. 1 again, measuring staff 2 has bulb end 22 and stiff end 21, and the end face middle part of this stiff end 21 offers screw; The stiff end 21 of measuring staff 2 inserts the big portion 17 of these shoulder hole 18 diameters and replaces on ladder, the gauge head that the bulb of these three measuring staffs 2 is positioned at the test arm 51 of this milscale 5 is on the circumference in the center of circle, can adjust the same circumference of three measuring staffs 2 when assembling for convenience or during 2 distortion of a certain measuring staff, wherein the bulb end 22 of two described measuring staffs 2 and stiff end 21 eccentric settings; The diameter smaller part 16 that the screw rod of this lock-screw 4 passes this shoulder hole 18 is screwed into this screw, and its spiral shell emits card to end on this support 1.
See also Fig. 1 and Fig. 4, be bolted with set nut 3 on this bolt 11, the inner chamber of this set nut 3 is and the corresponding truncated cone-shaped of the profile of this bolt 11, the test arm overcoat 50 of milscale 5 passes this center pit 10 and is inserted in the inner chamber of this bolt 11, rotate this set nut 3, the openend of this bolt 11 is extruded inward on this test arm overcoat 50, these test arm overcoat 50 cards are ended on the inner chamber of this bolt 11; The free end of the test arm 51 of this milscale 5 stretches out this bolt 11 lower surfaces, and the gauge head of the test arm 51 of this milscale 5 is positioned on the central shaft of this center pit 10.
Milscale 5 selected ranges are the 0-3 millimeter, and scale division value is 0.001 millimeter a clock gauge.
Certainly, these three measuring staffs 2 also can weld, the mode of riveted joint etc. is fixedly connected on this support 2.
The measuring method principle is as follows;
As shown in Figure 5, the measuring point of sphere product is to be the spherical crown of ABC part on the sphere of r with the radius, and measuring staff 2 is on the circle of spherical crown bottom surface, and spherical crown bottom surface radius of a circle depends on 3 place diameter of a circles that measuring instrument bulb end 22 contacts with spherical crown, i.e. L value.The size of L value, by surveying getting final product with spherical crown contact point place diameter of a circle of three measuring staffs 2, spherical crown height h is recorded by clock gauge 5, has according to intersecting chord theorem:
AD×DC＝BD×DE
Because AD=DC=L/2
BD＝h
DE＝2r-BD＝2r-h
So (L/2)
2=h * (2r-h)
Be r=L
2/ (8 * h)+h/2
Use the operation steps of a kind of sphere curvature radius measuring instrument of the utility model measurement products sphere curvature radius:
1. on support 1, install milscale 5.
2. go up at zero level grinding flat plate (marble flat board) and adjust milscale 5, press table to zero-bit, set nut 3 and three split bolts 11 screw, and lock milscale 5, write down the reading h1 of clock gauge 5 this moment.
3. measuring instrument is moved on on the test product, after measuring staff 2 connects test product with the gauge head of milscale 5 test arms 51 is stable simultaneously, the reading h2. of record milscale 5
4. calculate twice difference of reading h=h1-h2. of clock gauge
5. calculate the radius-of-curvature r=L of test product
2/ (8 * h)+h/2
Claims (5)
1. sphere curvature radius measuring instrument comprises the measuring staff and the milscale of support, three dribbling heads; The test arm overcoat of this milscale is fixedly connected on this mid-stent, and the free end of its test arm stretches out this support; It is characterized in that: described three measuring staffs are fixedly connected on this support, and the gauge head that the bulb of these three measuring staffs is positioned at the test arm of this milscale is on the circumference in the center of circle.
2. a kind of sphere curvature radius measuring instrument as claimed in claim 1, it is characterized in that: described mid-stent offers the center pit that runs through, and the hole wall lower end of this center pit is fixedly connected with the truncated cone-shaped bolt of hollow and opening; The free end diameter of this bolt is less, is bolted with inner chamber and the corresponding set nut of this bolt profile on it; The test arm overcoat of described milscale passes this center pit card to be ended in the inner chamber of this bolt; The test arm free end of this milscale stretches out this bolt lower surface.
3. a kind of sphere curvature radius measuring instrument as claimed in claim 1 is characterized in that: it also comprises three lock-screws; Described measuring staff has bulb end and stiff end, and the end face middle part of this stiff end offers screw; Offer three shoulder holes on the described support, these three stepped pore distribution with the circumference of this center pit concentric on; The stiff end of this measuring staff inserts the big portion of this shoulder hole diameter and replaces on ladder; The screw rod of this lock-screw passes this shoulder hole diameter smaller part and is screwed into this screw, and its spiral shell emits card to end on this support.
4. a kind of sphere curvature radius measuring instrument as claimed in claim 3 is characterized in that: wherein the bulb end of two described measuring staffs and stiff end are eccentric is provided with.
5. a kind of sphere curvature radius measuring instrument as claimed in claim 3 is characterized in that: described three shoulder holes are distributed on the described support, and with the circumference of center pit concentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017626 CN2938024Y (en) | 2006-08-07 | 2006-08-07 | Spherical curvature radius measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620017626 CN2938024Y (en) | 2006-08-07 | 2006-08-07 | Spherical curvature radius measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938024Y true CN2938024Y (en) | 2007-08-22 |
Family
ID=38362053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620017626 Expired - Lifetime CN2938024Y (en) | 2006-08-07 | 2006-08-07 | Spherical curvature radius measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938024Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445137A (en) * | 2011-09-20 | 2012-05-09 | 飞翼股份有限公司 | Device for measuring radius of spherical crown and measuring method thereof |
| CN103234432A (en) * | 2013-04-25 | 2013-08-07 | 上海核工程研究设计院 | Center-free arc bending radius measuring ruler and bend pipe bending radius measuring method |
| CN103438791A (en) * | 2013-07-31 | 2013-12-11 | 上海特安一凯轴承有限公司 | Ball bearing channel curvature radius gauge |
| CN103759615A (en) * | 2014-01-29 | 2014-04-30 | 广西玉柴机器股份有限公司 | Circular arc radius detection assembly |
| CN108387162A (en) * | 2018-02-13 | 2018-08-10 | 东北大学 | A kind of method of off-line measurement large-scale workpiece radius of curvature |
| CN109186413A (en) * | 2018-07-16 | 2019-01-11 | 西安交通大学 | A kind of adjustable spherometer of measurement diameter and radius of curvature and offset measuring method |
-
2006
- 2006-08-07 CN CN 200620017626 patent/CN2938024Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445137A (en) * | 2011-09-20 | 2012-05-09 | 飞翼股份有限公司 | Device for measuring radius of spherical crown and measuring method thereof |
| CN103234432A (en) * | 2013-04-25 | 2013-08-07 | 上海核工程研究设计院 | Center-free arc bending radius measuring ruler and bend pipe bending radius measuring method |
| CN103438791A (en) * | 2013-07-31 | 2013-12-11 | 上海特安一凯轴承有限公司 | Ball bearing channel curvature radius gauge |
| CN103438791B (en) * | 2013-07-31 | 2015-08-05 | 上海特安一凯轴承有限公司 | Ball bearing Contact stress measuring instrument |
| CN103759615A (en) * | 2014-01-29 | 2014-04-30 | 广西玉柴机器股份有限公司 | Circular arc radius detection assembly |
| CN108387162A (en) * | 2018-02-13 | 2018-08-10 | 东北大学 | A kind of method of off-line measurement large-scale workpiece radius of curvature |
| CN109186413A (en) * | 2018-07-16 | 2019-01-11 | 西安交通大学 | A kind of adjustable spherometer of measurement diameter and radius of curvature and offset measuring method |
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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: 20070822 |
|
| EXPY | Termination of patent right or utility model |