CN107389017A - 3 bore measuring instruments - Google Patents
3 bore measuring instruments Download PDFInfo
- Publication number
- CN107389017A CN107389017A CN201710757290.8A CN201710757290A CN107389017A CN 107389017 A CN107389017 A CN 107389017A CN 201710757290 A CN201710757290 A CN 201710757290A CN 107389017 A CN107389017 A CN 107389017A
- Authority
- CN
- China
- Prior art keywords
- gauge rod
- chi frame
- blade
- open
- close mechanism
- 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.)
- Granted
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/10—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters
- G01B21/14—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters internal diameters
Abstract
The invention discloses a kind of 3 bore measuring instruments, including chi frame, blade and gauge rod, the blade slides and is located at chi inframe, the consistent gauge rod circumference uniform distribution of three root long degree is located at chi frame front end, the inner of each gauge rod is hinged in chi inframe, each gauge rod connects the blade for stretching out chi frame front end by open/close mechanism, open/close mechanism close up gauge rod to the inside diameter measurement position correspondence of minimum in gauge rod in the maximum overhang in chi frame front end, open/close mechanism opening gauge rod is to maximum inside diameter measurement position correspondence in gauge rod in the minimum overhang in chi frame front end, the chi frame is provided with the digital display device that the amount of recovery of blade is converted into gauge rod measurement pore size.The present invention is measured using three point contact by the way of diameter of bore, it is smaller with the error in two-point measurement aperture than tradition, precision is higher, solves the aperture of " 3 internal measuring micrometers " less problem of measurement range, more currently used slide calliper rule class and the measurable more deep hole of micrometer class measurer.
Description
Technical field
The present invention relates to endoporus internal measuring instrument, is specially a kind of 3 bore measuring instruments.
Background technology
At present, the most frequently used method of diameter of bore is measured in machining to be carried out with slide calliper rule class and micrometer class measurer
Measurement.
Sliding calliper measuring tool is measured with two-point contact mode, it is impossible to reflects the form error to portal comprehensively；Micrometer
Although class measurer also has " survey formula micrometer in 3 points ", measurement range is smaller, inconvenient for operation.
The content of the invention
In view of the shortcomings of the prior art, the technical problems to be solved by the invention are that to propose a kind of measurement range big and easily
In 3 bore measuring instruments of operation.
3 bore measuring instruments of above-mentioned technical problem are can solve the problem that, its technical scheme includes chi frame, blade and gauge rod, institute
State blade slip and be located at chi inframe, the consistent gauge rod circumference uniform distribution of three root long degree is located at chi frame front end, the inner hinge of each gauge rod
In chi inframe, each gauge rod connects the blade for stretching out chi frame front end by open/close mechanism, and open/close mechanism closes up gauge rod to the hole of minimum
Footpath measurement position corresponds to gauge rod in the maximum overhang in chi frame front end, and open/close mechanism opens gauge rod to the inside diameter measurement position of maximum
Put corresponding to gauge rod in the minimum overhang in chi frame front end, the chi frame is provided with is converted into gauge rod measurement by the amount of recovery of blade
The digital display device of pore size.
A kind of structure of the open/close mechanism includes the long and short support bar and coaxial corresponding to each gauge rod circumference uniform distribution
Spring is closed, for the opening and closing pressure mounting of the spring between forward and backward spring base, the inner for strut of drawing money on credit is hinged in rear spring seat, long support
The outer end of bar is hinged on the body of rod of corresponding gauge rod, and the inner of short support bar is hinged in preceding spring base, the outer end hinge of short support bar
It is connected on the body of rod for strut of drawing money on credit.
The conventional configuration of one kind of the digital display device includes sensor, calculator and display.
For ease of operation, close up gauge rod to the inside diameter measurement position of minimum in open/close mechanism, the blade is by chi frame
Clamping pin mechanism fixed position.
Beneficial effects of the present invention：
1st, 3 bore measuring instruments of the invention are by the way of three point contact measures diameter of bore, than tradition two-point measurement
The error in aperture is smaller, and precision is higher.
2nd, measurement range of the present invention is larger, solves " 3 internal measuring micrometers " less problem of measurement range, more at present
The aperture of the conventional measurable more deep hole of slide calliper rule class and micrometer class measurer.
3rd, the present invention uses digital display reading, accurate quick.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the present invention.
Fig. 2 is the schematic diagram that gauge rod is in maximum measurement aperture location in Fig. 1 embodiments.
Figure number identifies：1st, chi frame；2nd, blade；3rd, gauge rod；4th, digital display device；5th, draw money on credit strut；6th, short support bar；7th, opening and closing
Spring；8th, preceding spring base；9th, rear spring seat；10th, clamping pin mechanism；11st, spheric probe.
Embodiment
Illustrated embodiment is described further to technical scheme below in conjunction with the accompanying drawings.
3 bore measuring instruments of the invention, its structure include chi frame 1, blade 2, gauge rod 3 and open/close mechanism, the blade 2
From the front end of chi frame 1 coaxially it is interspersed in the inner, the consistent gauge rod 3 of three root long degree in the front end circumference uniform distribution of chi frame 1, each gauge rod 3
It is inner that spheric probe 11, the circle diameter that three spheric probes 11 are formed are installed in hinge dress in chi frame 1, the outer end of each gauge rod 3
The aperture as measured, three gauge rods 3 connect blade 2 by the open/close mechanism set outside the front end of chi frame 1 and stretched out from the front end of chi frame 1
Termination, as shown in Figure 1.
The open/close mechanism include corresponding to each circumference uniform distribution of gauge rod 3 long and short support bar 5,6 and with chi frame 1 and blade 2
The opening and closing spring 7 being coaxially disposed, for the pretension of opening and closing spring 7 between forward and backward spring base 8,9, strut 5 of drawing money on credit is located at rear spring
Between seat 9 and gauge rod 3, the inner for strut 5 of drawing money on credit is hinged on the correspondence position of rear spring seat 9, and the outer end for strut 5 of drawing money on credit is hinged
In the middle part of the body of rod of corresponding gauge rod 3, short support bar 6 is located between preceding spring base 8 and strut 5 of drawing money on credit, the inner hinge of short support bar 6
Before being connected on the correspondence position of spring base 8, the outer end of short support bar 6 is hinged in the middle part of the body of rod of corresponding strut 5 of drawing money on credit, such as Fig. 1
It is shown.
Manually under control, the inside diameter measurement position to minimum can be closed up gauge rod 3 (at three gauge rods 3 by open/close mechanism
In coaxial parallel position), the position correspondence stretches out the maximum overhang of the front end of chi frame 1 in blade 2, in the open/close mechanism amount of closing up
The minimum-value aperture measurement position of bar 3, the blade 2 is by the fixed position of clamping pin mechanism 10 that is set on chi frame 1；Control clamping pin mechanism
10 release to the spacing of blade 2, and under the elastic force effect of opening and closing spring 7, open/close mechanism opens gauge rod 3 to the inside diameter measurement of maximum
Position, the position correspondence stretch out the minimum overhang of the front end of chi frame 1 in blade 2, open/close mechanism in process of expansion, blade 2 by
Gradually bounced back to chi frame 1, the chi frame 1 is provided with digital display device 4 (including sensor, calculator and display), the digital display dress
Put 4 the amount of recovery of blade 2 is converted into pore size value that gauge rod 3 measures and given and show, as shown in Figure 1.
During measurement, the gauge rod 3 closed up is stretched into the measured hole of workpiece, fixation of the releasing clamping pin mechanism 10 to blade 2, three
Root gauge rod 3 opens in the presence of opening and closing spring 7, and three spheric probes 11 are contacted with the hole wall of measured bore and spacing, blade 2
Bounce back backward in drilling depth frame 1, the relative retraction displacement amount of blade 2 and chi frame 1, which is caught by sensor and is converted into signal input, to be counted
Device is calculated, gauge rod 3 and the tan relation of the displacement of blade 2 are changed into by numeral by the program of setting by the data processing of calculator
Signal is expressed in the display, you can reads the size in tested aperture.
Claims (4)
1. 3 bore measuring instruments, it is characterised in that：Including chi frame (1), blade (2) and gauge rod (3), the blade (2) is slided
In chi frame (1), consistent gauge rod (3) circumference uniform distribution of three root long degree is located at chi frame (1) front end, the inner hinge of each gauge rod (3)
It is connected in chi frame (1), each gauge rod (3) connects the blade (2) for stretching out chi frame (1) front end by open/close mechanism, and open/close mechanism closes up
Gauge rod (3) is to minimum inside diameter measurement position correspondence in gauge rod (3) in the maximum overhang in chi frame (1) front end, open/close mechanism
Opening amount bar (3) is to maximum inside diameter measurement position correspondence in gauge rod (3) in the minimum overhang in chi frame (1) front end, the chi frame
(1) it is provided with the digital display device (4) that the amount of recovery of blade (2) is converted into gauge rod (3) measurement pore size.
2. 3 bore measuring instruments according to claim 1, it is characterised in that：The open/close mechanism includes corresponding to each amount
The long and short support bar (5,6) and coaxial opening and closing spring (7) of bar (3) circumference uniform distribution, the opening and closing spring (7) is fitted in forward and backward
Between spring base (8,9), the inner of strut of drawing money on credit (5) is hinged in rear spring seat (9), and the outer end of strut of drawing money on credit (5) is hinged in pair
On the body of rod for answering gauge rod (3), the inner of short support bar (6) is hinged in preceding spring base (8), and the outer end of short support bar (6) is hinged in
Draw money on credit on the body of rod of strut (5).
3. 3 bore measuring instruments according to claim 1, it is characterised in that：The digital display device (4) include sensor,
Calculator and display.
4. 3 bore measuring instruments according to any one in claims 1 to 3, it is characterised in that：Closed in open/close mechanism
Hold together gauge rod (3) to minimum inside diameter measurement position, the blade (2) is by clamping pin mechanism (10) fixed position on chi frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710757290.8A CN107389017B (en) | 2017-08-29 | 2017-08-29 | Three-point aperture measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710757290.8A CN107389017B (en) | 2017-08-29 | 2017-08-29 | Three-point aperture measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107389017A true CN107389017A (en) | 2017-11-24 |
| CN107389017B CN107389017B (en) | 2023-04-07 |
Family
ID=60346484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710757290.8A Active CN107389017B (en) | 2017-08-29 | 2017-08-29 | Three-point aperture measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107389017B (en) |
Citations (23)
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| JPH0486515A (en) * | 1990-07-30 | 1992-03-19 | Mitani Sekisan Co Ltd | Method and equipment for measuring diameter of pile hole of cast-in-place pile |
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| CN2108894U (en) * | 1991-03-19 | 1992-07-01 | 杭忠浩 | Measuring gauge for outside diameter centering |
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| CN106441130A (en) * | 2016-09-23 | 2017-02-22 | 苏州蓝王机床工具科技有限公司 | Multi-point laser internal diameter measuring instrument and measurement calculation method thereof |
| CN206073926U (en) * | 2016-09-23 | 2017-04-05 | 苏州蓝王机床工具科技有限公司 | A kind of laser inside diameter measuring instrument |
| CN106896354A (en) * | 2015-12-21 | 2017-06-27 | 西安天衡计量仪表有限公司 | A kind of inner diameter measurement system for gas distributing system |
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-
2017
- 2017-08-29 CN CN201710757290.8A patent/CN107389017B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1358673A (en) * | 1963-04-02 | 1964-04-17 | Hommelwerke | Internal diameter measuring device |
| GB1501683A (en) * | 1974-04-09 | 1978-02-22 | Schlumberger Ltd | Borehole apparatus having cambered leaf springs for positioning the apparatus in the borehole |
| US4288924A (en) * | 1979-01-25 | 1981-09-15 | Kabushiki Kaisha Mitutoyo Seisakusho | Inside dimension measuring gauge |
| US4385446A (en) * | 1980-02-08 | 1983-05-31 | Piere Roch S.A.R.L. | Pistol-grip instrument for measurement of inside diameters |
| JPH0486515A (en) * | 1990-07-30 | 1992-03-19 | Mitani Sekisan Co Ltd | Method and equipment for measuring diameter of pile hole of cast-in-place pile |
| CN2103118U (en) * | 1990-11-28 | 1992-04-29 | 陈满成 | Verify apparatus under-reaming bottom pile |
| CN2108894U (en) * | 1991-03-19 | 1992-07-01 | 杭忠浩 | Measuring gauge for outside diameter centering |
| RU2002119947A (en) * | 2002-07-22 | 2004-03-20 | Общество с ограниченной ответственностью фирма "Радиус-Сервис" | DEVICE FOR MEASURING DEEP HOLE DIAMETERS |
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| CN106896354A (en) * | 2015-12-21 | 2017-06-27 | 西安天衡计量仪表有限公司 | A kind of inner diameter measurement system for gas distributing system |
| CN205403750U (en) * | 2016-03-29 | 2016-07-27 | 广东技术师范学院 | Internal diameter of pipeline reducing detection device |
| CN106441130A (en) * | 2016-09-23 | 2017-02-22 | 苏州蓝王机床工具科技有限公司 | Multi-point laser internal diameter measuring instrument and measurement calculation method thereof |
| CN206073926U (en) * | 2016-09-23 | 2017-04-05 | 苏州蓝王机床工具科技有限公司 | A kind of laser inside diameter measuring instrument |
| CN207113848U (en) * | 2017-08-29 | 2018-03-16 | 桂林电子科技大学 | 3 bore measuring instruments |
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| Publication number | Publication date |
|---|---|
| CN107389017B (en) | 2023-04-07 |
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