CN104422372A - Aperture measurement device - Google Patents
Aperture measurement device Download PDFInfo
- Publication number
- CN104422372A CN104422372A CN201310377325.7A CN201310377325A CN104422372A CN 104422372 A CN104422372 A CN 104422372A CN 201310377325 A CN201310377325 A CN 201310377325A CN 104422372 A CN104422372 A CN 104422372A
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- China
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- contact
- cylindrical shell
- hole
- barrel body
- measurement device
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to an aperture measurement device. The aperture measurement device comprises a barrel body. A pair of radial holes are symmetrically formed in the circumferential wall of the barrel body; a contact is arranged in each radial hole by means of slide fit; one end of the contact stretches into the axial hole of the barrel body, and the other end of the contact penetrates out from the orifice of a radial hole located in the circumferential wall surface of the barrel body; an inclined surface is arranged on the end part stretching into the axial hole of the barrel body, of the contact; the contact is sleeved with a conical spring; one end of the spring is connected with the contact, and the other end of the spring is fixed with the barrel body; a sleeve is arranged in the axial hole of the barrel body, and one end of the sleeve stretches out to the outside of the axial hole of the barrel body and then is connected with a dial gauge; the measuring bar of the dial gauge stretches into the sleeve, and the end part of the measuring bar is conical. The aperture measurement device disclosed by the invention is capable of accurately measuring an aperture and free from damages to hole wall.
Description
Technical field
The present invention relates to a kind of aperture measurement device.
Background technology
Adopt at present usually the aperture of gauge ball measurement products, i.e. gauge ball perforation hand-manipulated, see gauge ball when boring a hole whether can by or by backstop.Such as, if little gauge ball by and large gauge ball by backstop, then aperture is qualified.But there is following shortcoming in this metering system:
(1) when gauge ball passes through the hole of product, have relative motion between gauge ball and the hole of product, easy and hole wall friction, damages hole wall, causes product bad;
(2) when product aperture is near critical value, different operators detects, and because dynamics used is different, can draw different testing results;
(3) gauge ball is after long-time use, and self easily weares and teares, and makes measurement result inaccurate.
Summary of the invention
For above-mentioned technical matters, fundamental purpose of the present invention for provide a kind of can the aperture measurement device of Measurement accuracy bore dia, and injury can not be produced to hole wall.
Aperture measurement device, comprise cylindrical shell, the circumferential wall of cylindrical shell is arranged with a pair radial hole, be slidably matched in each radial hole a contact, one end of contact extend in the axial hole of cylindrical shell, the other end of contact passes from the aperture of the radial hole be positioned at cylindrical shell circumference wall, the end that contact extend into the axial hole of cylindrical shell is provided with inclined-plane, on contact, cover has the spring of taper, one end of spring is connected with contact, the other end and the cylindrical shell of spring are fixed, a sleeve is provided with in the axial hole of cylindrical shell, be connected with a dial gauge after one end of this sleeve reaches the axial hole outside of cylindrical shell, the measuring staff of dial gauge extend in sleeve, the end of this measuring staff is conically.
Have employed such scheme, when the aperture of product is measured, cylindrical shell is inserted in hole, make the measuring staff of dial gauge along cylindrical shell axial displacement, measuring staff in displacement process with the contact of incline plane on two contacts, when measuring staff continues displacement, promote contact to the displacement of cylindrical shell radial direction, one end that contact is positioned at outside cylindrical shell circumference wall finally contacts with wall surface of the hole, when measuring staff cannot continue displacement, then illustrate that two contacts all reliably contact with wall surface of the hole, at this moment read the upper reading of dial gauge, then by calculating the aperture value then can portalled.
Further, also comprise a back up pad, this back up pad is provided with threaded hole, and described cylindrical shell is threaded with threaded hole.Because back up pad can be placed on the end face of product in use, and can according to the degree of depth in hole, adjustment cylindrical shell extend into the degree of depth in hole, so that measure the multiple positions in hole.
Accompanying drawing explanation
Fig. 1 is aperture measurement device structural representation of the present invention;
1 is cylindrical shell, and 2 is contact, and 3 is spring, and 4 is sleeve, and 5 is dial gauge, and 6 is measuring staff, and 7 is back up pad.
Embodiment
With reference to Fig. 1, a kind of aperture measurement device of the present invention, comprise cylindrical shell 1, the circumferential wall of cylindrical shell 1 is arranged with a pair radial hole, be slidably matched in each radial hole a contact 2, one end of contact 2 extend in the axial hole of cylindrical shell, and the other end of contact 2 passes from the aperture of the radial hole be positioned at cylindrical shell circumference wall, and the end that contact 2 extend into the axial hole of cylindrical shell is provided with inclined-plane.On contact 2, cover has the spring 3 of taper, and one end of spring 3 is connected with contact 2, and the other end and the cylindrical shell 1 of spring 3 are fixed.In the axial hole of cylindrical shell, be provided with a sleeve 4, be connected with a dial gauge 5 after one end of this sleeve 4 reaches the axial hole outside of cylindrical shell 1, the measuring staff 6 of dial gauge extend in sleeve, and the end of this measuring staff is conically.Also comprise a back up pad 7, this back up pad 7 is provided with threaded hole, and described cylindrical shell 1 is threaded with threaded hole 8.
Claims (2)
1. aperture measurement device, it is characterized in that: comprise cylindrical shell, the circumferential wall of cylindrical shell is arranged with a pair radial hole, be slidably matched in each radial hole a contact, one end of contact extend in the axial hole of cylindrical shell, the other end of contact passes from the aperture of the radial hole be positioned at cylindrical shell circumference wall, the end that contact extend into the axial hole of cylindrical shell is provided with inclined-plane, on contact, cover has the spring of taper, one end of spring is connected with contact, the other end and the cylindrical shell of spring are fixed, a sleeve is provided with in the axial hole of cylindrical shell, be connected with a dial gauge after one end of this sleeve reaches the axial hole outside of cylindrical shell, the measuring staff of dial gauge extend in sleeve, the end of this measuring staff is conically.
2. aperture measurement device according to claim 1, is characterized in that: also comprise a back up pad, this back up pad is provided with threaded hole, and described cylindrical shell is threaded with threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377325.7A CN104422372A (en) | 2013-08-27 | 2013-08-27 | Aperture measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377325.7A CN104422372A (en) | 2013-08-27 | 2013-08-27 | Aperture measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104422372A true CN104422372A (en) | 2015-03-18 |
Family
ID=52972053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310377325.7A Pending CN104422372A (en) | 2013-08-27 | 2013-08-27 | Aperture measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104422372A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973114A (en) * | 2016-06-03 | 2016-09-28 | 马鞍山方圆动力科技有限公司 | High precision main shaft inner hole testing tool |
| CN108332694A (en) * | 2018-01-19 | 2018-07-27 | 南昌首诺科技有限公司 | A kind of prevention of geological disaster Size of Crack detection device |
| CN109813201A (en) * | 2019-01-28 | 2019-05-28 | 苏州群圣欣机械设备有限公司 | It is a kind of for detecting the detection device of part internal diameter |
| CN111649651A (en) * | 2020-07-28 | 2020-09-11 | 怀化学院 | A measuring device for product design |
| CN112577395A (en) * | 2020-12-17 | 2021-03-30 | 内蒙古北方重工业集团有限公司 | Deep hole inner diameter measuring device and measuring method |
| CN113091566A (en) * | 2021-04-02 | 2021-07-09 | 上海通成企业发展有限公司 | Aperture measuring device |
| CN113188409A (en) * | 2021-04-23 | 2021-07-30 | 广东鸿图武汉压铸有限公司 | Dimension detection device and dimension detection method for O-shaped groove in straight hole |
-
2013
- 2013-08-27 CN CN201310377325.7A patent/CN104422372A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973114A (en) * | 2016-06-03 | 2016-09-28 | 马鞍山方圆动力科技有限公司 | High precision main shaft inner hole testing tool |
| CN108332694A (en) * | 2018-01-19 | 2018-07-27 | 南昌首诺科技有限公司 | A kind of prevention of geological disaster Size of Crack detection device |
| CN108332694B (en) * | 2018-01-19 | 2020-07-21 | 江西核工业建设有限公司 | Geological disaster prevention crack size detection equipment |
| CN109813201A (en) * | 2019-01-28 | 2019-05-28 | 苏州群圣欣机械设备有限公司 | It is a kind of for detecting the detection device of part internal diameter |
| CN111649651A (en) * | 2020-07-28 | 2020-09-11 | 怀化学院 | A measuring device for product design |
| CN112577395A (en) * | 2020-12-17 | 2021-03-30 | 内蒙古北方重工业集团有限公司 | Deep hole inner diameter measuring device and measuring method |
| CN113091566A (en) * | 2021-04-02 | 2021-07-09 | 上海通成企业发展有限公司 | Aperture measuring device |
| CN113188409A (en) * | 2021-04-23 | 2021-07-30 | 广东鸿图武汉压铸有限公司 | Dimension detection device and dimension detection method for O-shaped groove in straight hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |