CN203396340U - Measure template of external screw thread root circular arc - Google Patents
Measure template of external screw thread root circular arc Download PDFInfo
- Publication number
- CN203396340U CN203396340U CN201320416193.XU CN201320416193U CN203396340U CN 203396340 U CN203396340 U CN 203396340U CN 201320416193 U CN201320416193 U CN 201320416193U CN 203396340 U CN203396340 U CN 203396340U
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- China
- Prior art keywords
- conical surface
- circular arc
- steel plate
- template
- external thread
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000002950 deficient Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A template for measuring the arc of the root part of an external thread belongs to the technical field of measurement. The steel plate is provided with an arc chamfer, a first sealing surface, a second sealing surface, a first conical surface, a second conical surface and scales; the arc chamfer is arranged at the corner of the steel plate, one edge of the steel plate is a first conical surface with the taper of 1:6, the other edge of the steel plate is a second conical surface with the taper of 1:4, and the first conical surface and the second conical surface are opposite edges; the first sealing surface and the second sealing surface are opposite edges, and scales are engraved on the surface of the steel plate. When the arc of the external thread root is measured, the sealing surface is tightly attached to the thread sealing surface, the arc chamfer is tightly attached to the cone and the sealing surface arc chamfer, a gap is left between the template conical surface and the thread plane, and the arc chamfer is judged to be qualified if the arc chamfer is larger than 0.8mm, otherwise the arc chamfer is unqualified; when the total length of the taper of the external thread is measured, the conical surface part of the template is tightly attached to the crest part of the thread and is aligned to the corresponding scale. The problem that the radius of the circular arc at the intersection of the cone and the sealing surface cannot be measured is solved.
Description
Technical field
The utility model relates to a kind of template of measuring external thread root circular arc, belongs to oil, rock gas drill and petroleum extraction tools---the part field of measuring technique that is threaded of drilling tool.
Background technology
Regulation in GB/T22512.2-2008 " industrial gas oil rotary feed control part 2: processing and measurement that rotation shoulder type is threaded ", the arc radius of circular cone and sealing surface intersection is not less than 0.8mm, when drill collar adopts stress dispersion groove, cylinder and sealing surface transition arc radius are 1.6 ± 0.4mm.At my Oil Field, add man-hour, for reducing the stress of circular cone and sealing surface intersection, concentrate, its arc radius has been improved to requirement, but in actual applications, cannot measure this position data.Er Gai position circular arc chamfering is defective, causes external thread Root Stress to concentrate ，Yi Gai position to rupture.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of template of measuring external thread root circular arc, mainly solves the problem that the arc radius of circular cone and sealing surface intersection cannot measure and a kind of template of measuring external thread root circular arc designing.
A measuring method of measuring external thread root circular arc, contains following steps;
Tapering is two kinds of 1:6,1:4, circular arc chamfering 0.8mm, and template length is NC77 external thread tapering total length 165.1mm; While measuring external thread root circular arc, sealing surface is close to thread seal face, circular arc chamfering is close to circular cone and sealing surface circular arc chamfering, and the template conical surface and screw thread interplanar leave space and think that circular arc chamfering is greater than 0.8mm and is judged to qualifiedly, otherwise are defective;
While measuring external thread tapering total length, can be close to crest of screw thread position with template conical surface position, aim at corresponding scale.
Measure a template for external thread root circular arc, steel plate has circular arc chamfering, primary sealing area, secondary sealing area, first conical surface, second conical surface and scale;
Circular arc chamfering is in steel plate bight, and the Yi Ge limit of steel plate is first conical surface, and the tapering of first conical surface is 1:6, and another limit of steel plate is second conical surface, and the tapering of second conical surface is 1:4, and first conical surface and second conical surface are relative limits; Primary sealing area and secondary sealing area are relative limits, and scale is engraved in the surface of steel plate.
The utility model has the advantages that and there is multifunctional measuring function, can measure external thread root circular arc, also can measure external thread tapering total length; Simple to operate, easy to use; Template is small and exquisite, is convenient for carrying.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model is used for explaining the utility model, do not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the external thread schematic diagram to be measured of measurement of the present utility model.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present utility model belong to protection domain of the present utility model.
Embodiment 1: as shown in Figure 1 and Figure 2, a kind of measuring method of measuring external thread root circular arc, contains following steps;
Tapering is two kinds of 1:6,1:4, circular arc chamfering 0.8mm, and template is NC77 external thread tapering total length 165.1mm.While measuring external thread root circular arc, sealing surface is close to thread seal face, circular arc chamfering is close to circular cone and sealing surface circular arc chamfering, and the template conical surface and screw thread interplanar leave space and think that circular arc chamfering is greater than 0.8mm and is judged to qualifiedly, otherwise are defective;
While measuring external thread tapering total length, can be close to crest of screw thread position with template conical surface position, aim at corresponding scale.
A kind of template of measuring external thread root circular arc, steel plate 1 has circular arc chamfering 2, thickness is the steel plate 1 of 5mm, and it comprises circular arc chamfering 2, primary sealing area 3, the second front cover 4, first conical surface 8, second conical surface 9 and scale 10,11,12,13,14,15,16,17.
As mentioned above, embodiment of the present utility model is explained, but as long as not departing from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection domain of the present utility model.
Claims (2)
1. measure a template for external thread root circular arc, it is characterized in that steel plate has circular arc chamfering, primary sealing area, secondary sealing area, first conical surface, second conical surface and scale;
Circular arc chamfering is in steel plate bight, and the Yi Ge limit of steel plate is first conical surface, and the tapering of first conical surface is 1:6, and another limit of steel plate is second conical surface, and the tapering of second conical surface is 1:4, and first conical surface and second conical surface are relative limits; Primary sealing area and secondary sealing area are relative limits, and scale is engraved in the surface of steel plate.
2. a kind of template of measuring external thread root circular arc according to claim 1, the steel plate thickness it is characterized in that is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416193.XU CN203396340U (en) | 2013-07-12 | 2013-07-12 | Measure template of external screw thread root circular arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320416193.XU CN203396340U (en) | 2013-07-12 | 2013-07-12 | Measure template of external screw thread root circular arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203396340U true CN203396340U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320416193.XU Expired - Fee Related CN203396340U (en) | 2013-07-12 | 2013-07-12 | Measure template of external screw thread root circular arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203396340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279935A (en) * | 2013-07-12 | 2015-01-14 | 中国石油天然气股份有限公司 | Template and method for measuring arc of external thread root |
-
2013
- 2013-07-12 CN CN201320416193.XU patent/CN203396340U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279935A (en) * | 2013-07-12 | 2015-01-14 | 中国石油天然气股份有限公司 | Template and method for measuring arc of external thread root |
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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: 20140115 Termination date: 20210712 |