CN201926411U - Device for measuring aperture of end-face central hole - Google Patents
Device for measuring aperture of end-face central hole Download PDFInfo
- Publication number
- CN201926411U CN201926411U CN2011200294045U CN201120029404U CN201926411U CN 201926411 U CN201926411 U CN 201926411U CN 2011200294045 U CN2011200294045 U CN 2011200294045U CN 201120029404 U CN201120029404 U CN 201120029404U CN 201926411 U CN201926411 U CN 201926411U
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- China
- Prior art keywords
- measuring
- dial gauge
- steel ball
- amount
- center pit
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- Expired - Fee Related
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a device for measuring an aperture of an end-face central hole, which comprises a dial indicator body, a measuring head detachably connected with the dial indicator body and a steel ball fixed at a measuring end of the measuring head. The measuring device has simple structure and low cost, is convenient to use in various places, and provides conveniences for measuring the aperture of the end-face central hole.
Description
Technical field
The utility model relates to a kind of measurer, especially a kind of end face center pit inside diameter measurement device.
Background technology
Dial gauge is a kind of survey instrument commonly used, mainly be to utilize rack pinion or lever and gear wheel transmission, the straight-line displacement of measuring staff is become the measurement instrument of the angular displacement of pointer, be mainly used in the size and dimension of measuring product, site error etc., scale division value is 0.01mm, and measurement range is 0-3,0-5,0-10mm.But model of existing dial gauge only is equipped with a kind of amount head, is not suitable for tackling multiple occasion, especially can't directly measure with dial gauge when aperture, measuring center hole.
The utility model content
The purpose of this utility model provides a kind of simple in structure, and cost is low, is convenient to tackle in multiple occasion, is convenient to measure the measurement mechanism in end face center pit aperture.
For achieving the above object, the utility model adopts following technical scheme: a kind of end face center pit inside diameter measurement device, comprise the dial gauge body, and the dial gauge body amount of being removably connected with head, the measuring junction of amount head is installed with steel ball.
Described amount head is equipped with two that are uneven in length at least.
The periphery snare of a described amount measuring junction is established set nut, the set nut lock sleeve that has been threaded towards the outer ring of dial gauge one side, the set nut positioning seat that has been threaded towards the outer ring of steel ball one side.
End face center pit inside diameter measurement device described in the utility model, when measuring the end face center pit, because the measuring junction at the amount head sets firmly steel ball, the center depth size that dial gauge can intuitively show is convenient to measure, and requires inside diameter measurement for center pit, calculate by simple trigonometric function before measuring, be converted into the steel ball height, can measure, avoided big, the inefficient shortcoming of the direct measured deviation of slide calliper rule.The amount head can be provided with a plurality of that length differs, the steel ball sphere diameter differs according to different center bore sizes.When measuring, lock sleeve, set nut and positioning seat can compress end face, and amount head telescopic slide in set nut and positioning seat is convenient to measure.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
A kind of end face center pit inside diameter measurement device by shown in Figure 1 comprises dial gauge body 1, dial gauge body 1 amount of being removably connected with 4, and the measuring junction of amount 4 is installed with steel ball 3.The periphery snare of described amount 4 measuring junction is established set nut 2, set nut 2 lock sleeve 6 that has been threaded towards the outer ring of dial gauge one side, set nut 2 positioning seat 5 that has been threaded towards the outer ring of steel ball 3 one sides.Described amount 4 is equipped with two that are uneven in length at least, and perhaps amount 4 can be provided with a plurality of that length differs, steel ball 3 sphere diameters differ according to different occasions.
When measuring,, select the amount that is of convenient length 4 and the suitable steel ball 3 of sphere diameter to cooperate according to the size in center pit to be measured aperture.Lock sleeve 6, set nut 2 and positioning seat 5 can compress end face, and amount 4 telescopic slide set nut 2 and positioning seat 5 in is convenient to measurement.The utility model is the improvement of doing on the basis of existing dial gauge, and described amount 4 all is threaded with dial gauge body 1, is prior art, so be not described in detail herein.
During calculating, can calculate according to following formula:
1, steel ball is higher than the measurement end face
D=2×[tg30°(rcos60°＋r－h－t)＋rsin60°]
2, steel ball is lower than the measurement end face
D=2×[tg30°(rcos60°＋r＋h－t)＋rsin60°]
Illustrate:
D represents center-hole diameter
R represents the steel ball radius
H represents to fathom
T represents constant, when center pit is 60 ° of center pits of standard, and t=0;
When having 120 °, center pit top protects awl or during other peripheral chamferings, t represents chamfering width size.
Claims (3)
1. an end face center pit inside diameter measurement device comprises the dial gauge body, and the dial gauge body amount of being removably connected with head is characterized in that: the measuring junction of amount head is installed with steel ball.
2. end face center pit inside diameter measurement device as claimed in claim 1 is characterized in that: described amount head is equipped with two that are uneven in length at least.
3. end face center pit inside diameter measurement device as claimed in claim 1, it is characterized in that: the periphery snare of a described amount measuring junction is established set nut, the set nut lock sleeve that has been threaded towards the outer ring of dial gauge one side, the set nut positioning seat that has been threaded towards the outer ring of steel ball one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200294045U CN201926411U (en) | 2011-01-28 | 2011-01-28 | Device for measuring aperture of end-face central hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200294045U CN201926411U (en) | 2011-01-28 | 2011-01-28 | Device for measuring aperture of end-face central hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926411U true CN201926411U (en) | 2011-08-10 |
Family
ID=44430256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200294045U Expired - Fee Related CN201926411U (en) | 2011-01-28 | 2011-01-28 | Device for measuring aperture of end-face central hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201926411U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305584A (en) * | 2011-08-25 | 2012-01-04 | 芜湖禾田汽车工业有限公司 | Spherical center depth detection apparatus of automobile control arm ball and detection method thereof |
| CN102967246A (en) * | 2012-12-05 | 2013-03-13 | 柳州欧维姆机械股份有限公司 | Inner cone obliquity steel ball measuring gauge and measuring method thereof |
| CN104613845A (en) * | 2014-12-19 | 2015-05-13 | 北京航天控制仪器研究所 | High precision sphere diameter in situ measuring device and method |
| CN104613845B (en) * | 2014-12-19 | 2018-02-09 | 北京航天控制仪器研究所 | A kind of high-precision sphere diameter on-position measure device and method |
-
2011
- 2011-01-28 CN CN2011200294045U patent/CN201926411U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305584A (en) * | 2011-08-25 | 2012-01-04 | 芜湖禾田汽车工业有限公司 | Spherical center depth detection apparatus of automobile control arm ball and detection method thereof |
| CN102967246A (en) * | 2012-12-05 | 2013-03-13 | 柳州欧维姆机械股份有限公司 | Inner cone obliquity steel ball measuring gauge and measuring method thereof |
| CN104613845A (en) * | 2014-12-19 | 2015-05-13 | 北京航天控制仪器研究所 | High precision sphere diameter in situ measuring device and method |
| CN104613845B (en) * | 2014-12-19 | 2018-02-09 | 北京航天控制仪器研究所 | A kind of high-precision sphere diameter on-position measure device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20130128 |