CN102749028A - Method for measuring intermediate diameter of taper thread gauge of universal tool microscope in contact way - Google Patents
Method for measuring intermediate diameter of taper thread gauge of universal tool microscope in contact way Download PDFInfo
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- CN102749028A CN102749028A CN2012102505603A CN201210250560A CN102749028A CN 102749028 A CN102749028 A CN 102749028A CN 2012102505603 A CN2012102505603 A CN 2012102505603A CN 201210250560 A CN201210250560 A CN 201210250560A CN 102749028 A CN102749028 A CN 102749028A
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- taper thread
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- dividing head
- thread
- tapper
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Abstract
The invention discloses a method for measuring the intermediate diameter of a tapper thread gauge in a contact way by using a dividing head and a vertical floating type optical localizer with a T-shaped probe on a universal tool microscope. By using the method, the requirement for the testing precision of the intermediate diameter of the tapper thread gauge can be met. During measurement, a tested tapper thread gauge (5) is mounted on a spindle of the dividing head (4) of the universal tool microscope; and axes of the tested tapper thread gauge and the spindle of the dividing head (4) are perpendicular to each other. Tool profiles at two sides of the axis of the tapper thread gauge can be probed in the contact way; and during probing, the intermediate diameter line of the probed tooth profiles, the X coordinate plane and the Y coordinate plane of an instrument are in a vertical state under the action of a turn angle generated by the dividing head. Compared with the traditional measuring mode of the universal tool microscope, the method provided by the invention has the advantages that a contact measuring mode is adopted, so that sighting errors of the microscope is greatly decreased; and further, tapper thread measurement is simplified to cylinder thread measurement due to the adoption of the dividing head.
Description
Technical field:The present invention relates in the taper thread gauge measuring method in footpath, particularly on universal tool-measuring microscope, measure in taper thread feeler gauge and the ring gauge method directly with the way of contact with dividing head and the vertical floating type optical locator that has T shape probe.
Background technology:The impermeability that taper thread is usually used in pipe fitting connects.The taper thread gauge is used to check the footpath on of pipe fitting taper thread, and work plug and work ring are respectively applied for check internal thread and external thread.And whether these gauges are qualified, then need test with higher leveled means.Whether the check and correction feeler gauge is used for the footpath on of work for inspection ring gauge qualified.Work plug then must be tested with gauging instrument with the middle footpath of check and correction feeler gauge.And when the work for inspection ring gauge, if lack corresponding check and correction feeler gauge at hand, also will test by gauging instrument.
Universal tool-measuring microscope is national mechanical industry standard JB/T17053 " tool microscope " specified standard optical metrological instrument.Current universal tool-measuring microscope can only adopt the method for microscope aiming to measure footpath in the taper thread, owing to there is bigger pointing error, only is suitable for low precision taper thread and measures, and can not satisfy the accuracy requirement of taper thread gauge check.
Summary of the invention:The invention discloses and a kind ofly on universal tool-measuring microscope, measure the method in footpath in the taper thread gauge with dividing head and the vertical floating type optical locator that has a T shape probe with the way of contact, this method can satisfy the accuracy requirement of footpath check in the taper thread gauge.
Formation of the present invention: footpath contact measurement method in a kind of taper thread gauge of universal tool-measuring microscope; It is characterized in that: during measurement; Tested taper thread gauge is installed on the dividing head spindle of universal tool-measuring microscope; The two axis is vertical each other, adopts the contact measurement mode to survey the tooth exterior feature of taper thread axis both sides; During detection, the corner that dividing head produces makes middle line and instrument X, the Y coordinate plane of being surveyed the wide cross section of tooth be in plumbness.
When calculating measurement result, quoted formula (1), (3), (5) in the instructions of the present invention:
In the formula:
Da---the ideal cylinder pitch diameter of thread;
In the formula:
d 2 ---footpath in the taper thread small end;
When the letter in the formula was replaced, this claim was still effective.
Compare with universal tool-measuring microscope traditional measurement mode, the present invention is owing to adopted the contact measurement mode, and microscopical pointing error reduces significantly; And the utilization of dividing head is reduced to straight thread to the measurement of taper thread and measures.
Description of drawings:Fig. 1 is the schematic diagram that the footpath is measured in the taper thread gauge, and Fig. 2 has provided T shape probe
QThe scaling method of value, Fig. 3 have provided the system configuration that the footpath is measured in the taper thread.
Among the figure: 1-main microscope; 2-regulating ring; 3-vertical floating type optical locator; 4-dividing head;
5-tested taper thread gauge; 6-dedicated platform; 7-instrument X coordinate ship shape worktable;
8-T shape probe; 9-gauge mark, 10-ring standard gauge, 11-ideal cylinder screw thread.
Embodiment:
As shown in Figure 1: according to the half-angle of projection φ of taper thread, make earlier tested gauge around
OThe axle rotate counterclockwise+position, φ angle, make again tested gauge around
OAxle clockwise rotates-position, φ angle.At this two positions, the wide middle line of the left and right tooth of tested screw thread is all perpendicular with instrument X, Y coordinate plane, so the measurement of taper thread is reduced to and middlely directly does
Da" ideal cylinder screw thread " measure, survey respectively with T shape probe
DaLeft and right tooth wide.Twice detection, the amount of movement of instrument Y coordinate does
Le, the ideal cylinder pitch diameter of thread then
DaCan calculate by (1) formula:
In the formula:
Da---the ideal cylinder pitch diameter of thread;
Le---twice detection, the amount of movement of instrument Y coordinate;
P---the pitch of taper thread;
α/
2---the half of thread angle of taper thread;
The half-angle of projection of φ---taper thread;
d---the probe diameter;
Q---probe two center probe distances.
According to Fig. 2, probe two center probe distances
Q, can demarcate through ring standard gauge, and calculate by (2) formula:
Q=Dc－Lc－d (2)
In the formula:
Dc---the ring standard gauge diameter;
Lc---during detection criterion ring gauge diameter, the displacement of probe;
d---probe diameter.
Foundation
DaCan be by footpath in (3) formula conversion taper thread small end
d 2 :
In the formula:
d 2 ---footpath in the taper thread small end;
The half-angle of projection of φ---taper thread;
Da---the ideal cylinder pitch diameter of thread;
H---the dedicated platform workplace is to the distance of dividing head axial line.
Will
d 2 Substitution (4) formula can be tried to achieve footpath in the basal plane
d 2 ':
In the formula:
L---the taper thread small end is to the predetermined distance of basal plane;
The half-angle of projection of φ---taper thread.
For the taper thread ring gauge, measuring method is similar, but (1) formula should be revised as (5) formula, and other computing formula is constant.
As shown in Figure 3:
1. the system configuration that the footpath is measured in the taper thread gauge: dividing head 4 is installed on instrument X coordinate ship shape worktable 7; Dedicated platform 6 is installed on the dividing head spindle; Rotate dividing head, parallel, record dividing head indicating value with clock gauge correction dedicated platform workplace and instrument Y coordinate
A0The vertical floating type optical locator 3 that will have T shape probe 8 is installed in main microscope 1 below of instrument.
2. ring standard gauge 10 is installed on the dedicated platform 6, and fixes with pressing plate; By demarcation T shape probe shown in Figure 2
QValue is calculated by (2) formula
QValue is taken off ring standard gauge then.
3. tested taper thread gauge 5 is installed on the dedicated platform 6, its taper thread small end is close to dedicated platform, and fixes with pressing plate.According to the half-angle of projection φ of taper thread, rotate dividing head, its indicating value is reached
A0+ φ; Move instrument X, Y, Z coordinate, wide with a T shape probe left side right tooth of probe detection taper thread; During detection, should regulate instrument regulating ring 2, the gauge mark 9 of vertical floating type optical locator 3 is aimed at each other; Fine motion instrument X coordinate finds the wide tangential of tooth peak, last fine motion instrument Y coordinate again; Make vertical floating type optical locator 3 be in the aiming state, read instrument Y coordinate indicating value
Y1Then, probe withdraws from the tooth exterior feature.
4. rotate dividing head 4, its indicating value is reached
A0-φ; Wide with reference to above program with T shape probe 8 right probe detection taper thread left side teeth; Read instrument Y coordinate indicating value
Y2
5. calculate twice detection, the amount of movement of instrument Y coordinate by (6) formula
Le
Le=|
y1-y2| (6)
6. will
LeSubstitution (1) formula is calculated
Da, calculate by (3), (4) formula again, obtain footpath in the basal plane of gauge at last
d 2 '.
7. for the taper thread ring gauge, measuring method is similar, but (1) formula should be revised as (5) formula, and other computing formula is constant.
Claims (2)
1. footpath contact measurement method in the taper thread gauge of a universal tool-measuring microscope; It is characterized in that: during measurement; Tested taper thread gauge (5) is installed on dividing head (4) main shaft of universal tool-measuring microscope; The two axis is vertical each other, adopts the contact measurement mode to survey the tooth exterior feature of taper thread axis both sides; During detection, the corner that dividing head produces makes middle line and instrument X, the Y coordinate plane of being surveyed the wide cross section of tooth be in plumbness.
2. footpath contact measurement method in the taper thread gauge of universal tool-measuring microscope according to claim 1 is characterized in that: when calculating measurement result, quoted formula (1), (3), (5) in the instructions of the present invention:
In the formula:
Da---the ideal cylinder pitch diameter of thread;
In the formula:
d 2 ---footpath in the taper thread small end;
When the letter in the formula was replaced, this claim was still effective.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210250560.3A CN102749028B (en) | 2012-07-19 | 2012-07-19 | Method for measuring intermediate diameter of taper thread gauge of universal tool microscope in contact way |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210250560.3A CN102749028B (en) | 2012-07-19 | 2012-07-19 | Method for measuring intermediate diameter of taper thread gauge of universal tool microscope in contact way |
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| CN102749028A true CN102749028A (en) | 2012-10-24 |
| CN102749028B CN102749028B (en) | 2014-07-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743359A (en) * | 2013-12-24 | 2014-04-23 | 山西平阳重工机械有限责任公司 | External thread coaxiality error measuring method |
| CN103743337A (en) * | 2013-12-24 | 2014-04-23 | 山西平阳重工机械有限责任公司 | Universal tool microscope for measuring tooth alignment error of fine-module bevel wheel and method |
| CN103901597A (en) * | 2014-04-17 | 2014-07-02 | 贵阳新天光电科技有限公司 | Method for realizing visual and video synchronous display and measurement on universal tool-measuring microscope |
| CN104089584A (en) * | 2014-06-27 | 2014-10-08 | 贵阳新天光电科技有限公司 | Small-size internal thread measurement method achieved on universal length measuring gauge and device |
| CN110849279A (en) * | 2019-11-27 | 2020-02-28 | 陕西理工大学 | Compensation method for measuring pitch diameter of thread by machine vision |
| CN114623773A (en) * | 2022-03-23 | 2022-06-14 | 深圳市中图仪器股份有限公司 | Full-automatic thread inner hole pitch diameter measuring method |
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| US5521707A (en) * | 1991-08-21 | 1996-05-28 | Apeiron, Inc. | Laser scanning method and apparatus for rapid precision measurement of thread form |
| JP2006064502A (en) * | 2004-08-26 | 2006-03-09 | Toray Ind Inc | Filament outer diameter measurement method and device |
| CN101476873A (en) * | 2009-01-05 | 2009-07-08 | 哈尔滨东安发动机（集团）有限公司 | Taper thread measuring instrument |
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|---|---|---|---|---|
| US5521707A (en) * | 1991-08-21 | 1996-05-28 | Apeiron, Inc. | Laser scanning method and apparatus for rapid precision measurement of thread form |
| JP2006064502A (en) * | 2004-08-26 | 2006-03-09 | Toray Ind Inc | Filament outer diameter measurement method and device |
| CN101476873A (en) * | 2009-01-05 | 2009-07-08 | 哈尔滨东安发动机（集团）有限公司 | Taper thread measuring instrument |
Non-Patent Citations (1)
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| 孟广萱: "圆锥螺纹塞规基面中径的测量", 《中国计量学院学报》, vol. 15, no. 4, 31 December 2004 (2004-12-31) * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743359A (en) * | 2013-12-24 | 2014-04-23 | 山西平阳重工机械有限责任公司 | External thread coaxiality error measuring method |
| CN103743337A (en) * | 2013-12-24 | 2014-04-23 | 山西平阳重工机械有限责任公司 | Universal tool microscope for measuring tooth alignment error of fine-module bevel wheel and method |
| CN103743359B (en) * | 2013-12-24 | 2016-04-06 | 山西平阳重工机械有限责任公司 | The measuring method of external thread coaxiality error |
| CN103743337B (en) * | 2013-12-24 | 2016-11-23 | 山西平阳重工机械有限责任公司 | Measure universal tool-measuring microscope and the method for low module helical gear tooth alignment error |
| CN103901597A (en) * | 2014-04-17 | 2014-07-02 | 贵阳新天光电科技有限公司 | Method for realizing visual and video synchronous display and measurement on universal tool-measuring microscope |
| CN104089584A (en) * | 2014-06-27 | 2014-10-08 | 贵阳新天光电科技有限公司 | Small-size internal thread measurement method achieved on universal length measuring gauge and device |
| CN110849279A (en) * | 2019-11-27 | 2020-02-28 | 陕西理工大学 | Compensation method for measuring pitch diameter of thread by machine vision |
| CN110849279B (en) * | 2019-11-27 | 2021-05-25 | 陕西理工大学 | Compensation method for measuring pitch diameter of thread by machine vision |
| CN114623773A (en) * | 2022-03-23 | 2022-06-14 | 深圳市中图仪器股份有限公司 | Full-automatic thread inner hole pitch diameter measuring method |
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|---|---|
| CN102749028B (en) | 2014-07-30 |
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