CN209689537U - The central diameter of included graduation indication advises measuring instrument - Google Patents
The central diameter of included graduation indication advises measuring instrument Download PDFInfo
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- CN209689537U CN209689537U CN201920396656.8U CN201920396656U CN209689537U CN 209689537 U CN209689537 U CN 209689537U CN 201920396656 U CN201920396656 U CN 201920396656U CN 209689537 U CN209689537 U CN 209689537U
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- rod
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- central diameter
- boots
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Abstract
The utility model provides a kind of central diameter rule measuring instrument of included graduation indication, the measurement for the petroleum sleeve joint pitch diameter of thread.Including connection rod structure and measurement rod structure, connection rod structure is that a pair of of connecting rod parallel across a pair of of slide and is arranged symmetrically, measurement rod structure by be separately mounted on slide determine measuring rod and dynamic measuring rod is formed.The position for surveying boots is to realize in measurement by adjusting the extension elongation of measuring rod；Graduated scale is increased on two measuring rods, to indicate the position for surveying boots in real time.The beneficial effects of the utility model are: the extension elongation that the central diameter rule measuring instrument of included graduation indication can quickly and accurately adjust measuring rod when marking zero meets the measurement position requirement for surveying boots；Can indicate in real time when in use survey boots position whether with require it is consistent, to guaranteeing that it is positive that measurement accuracy plays the role of.
Description
Technical field
The utility model relates to petroleum sleeve joints to fabricate industry, be a kind of central diameter rule measurement for screw measurement
Instrument.
Background technique
Petroleum casing pipe is attached by joint screw thread, and male thread is processed outside pipe end, and box thread, spiral shell are processed in box cupling
There are the structures such as inclined ladder type, sawtooth pattern, negative angle degree type in line section.For petroleum sleeve joint processing industry, all screw threads
It is all taper thread, i.e. big one end in diameter of thread one end is small, and in twist-on as male thread screws in box thread, male and female thread contact is produced
Raw increased radial interference, torque is higher and higher, and the risk that Thread-sticking occurs is increasing.In screw thread process, in order to control
The central diameter measurement of diameter of thread tolerance processed, screw thread becomes the parameter that must be controlled.
Since petroleum sleeve joint screw thread is taper thread, that is, apart from end face, remoter central diameter value is bigger for male thread, right
Apart from end face, remoter central diameter value is smaller for box thread.The design of the pitch diameter of thread be it is related with measurement position, measurement position is
Refer to the axial distance for surveying boots center to joint screw thread end face, which is located at screw thread tooth top, without apparent design feature, range estimation
It can not determine the position, need to indicate measurement position in petroleum sleeve joint Design of Screw Thread.Central diameter rule are petroleum sleeve joints
Common measuring tool in thread measurement, for the screw thread of different size, the measurement position of central diameter is not also identical.
In Design of Screw Thread, taper follows API standard, and by taking 1:16 as an example, petroleum sleeve joint screw thread is in diametrical direction
Taper value 0.061~0.066in/in of range, this there is 0.065~0.066in/in of fast cone and slow cone 0.061~
Point of 0.062in/in.The mark zero of central diameter rule needs to use integrated combination measurer, hereinafter referred to as mold, the taper of mold be by
It is designed and manufactured according to 0.063~0.064in/in of median of thread taper, therefore when measurement becomes the screw thread of cone, uses central diameter
It advises in the enterprising rower zero of mold of standard, the extension elongation L for surveying the i.e. measuring rod in position of boots just seems very crucial, is checking and accepting
The position that regulation surveys boots in standard need to meet L ± 0.5mm.
Measurement position is exactly to survey the center of boots, and the center for surveying boots is come by adjusting the extension elongation of measuring rod
It realizes.Common practice is that the center of boots is measured using board foot at present, and survey boots center in kind is round pin nail, board foot
Scale is short straight line, when adjusting measuring rod extension elongation, can only realize that pin center is aligned with board foot scale by range estimation, depending on
Feel error is ± 1mm, has been more than the error requirements of measurement position ± 0.5mm.
Central diameter rule are the common measurers for measuring the diameter of thread, and inquiry patent/application discloses:
1. a kind of device for the measurement of petroleum sleeve joint thread pitch diameter, number of patent application: 201810287451.6；
2. oil pipe thread, internal thread, pitch diameter measuring, patent/application number: 200710137214.3；
3. oil pipe thread, external thread, pitch diameter measuring, patent/application number: 200710137215.8；
4. a kind of instrument for measuring pitch diameter of internal thread, patent/application number: 201820270708.2；
5. a kind of pitch diameter of external thread measuring instrument, patent/application number: 201611178934.X；
It is above-mentioned announced the pitch diameter of thread measurement patent, no matter internal and external threads, be all that laterally adjustable survey is utilized
Gauge rod mechanism, partial monopoly consider the adjustable problem of measurement position, and are longitudinal extension adjustment by its measuring rod design,
Regulative mode is all previously mentioned board foot ocular estimate.That is, vertically resist slide wearing plate bottom with board foot, stretch measuring rod with
The center of boots is surveyed in adjustment, rod lock will be measured when meeting design requirement, entire adjustment process is all by artificial visual
Method boots center is consistent with board foot scale judging to survey, in addition, the vertical extent of board foot and wearing plate bottom surface is only manually
Control, the low error of precision are big.
Summary of the invention
Inconvenience is adjusted to solve the problems, such as that existing central diameter advises measuring rod, the utility model provides a kind of included graduation indication
Central diameter advise measuring instrument, as shown in Figure 1, the core design of the utility model is measuring rod and auxiliary tool board foot carrying out function
Can be two-in-one, the prefabricated graduation indication line on measuring rod is very clear when its extension elongation when adjusting measuring rod, when scale refers to
When timberline is flushed with slide bottom surface, Visual readings error ± 0.5mm meets the tolerance for surveying boots position.This method operation
Simple and efficient, measurement position indicates in real time.
The central diameter that the utility model carries graduation indication advises measuring instrument, and by exchanging slide and measuring rod, public affairs may be implemented
The measurement of screw thread or box thread.Its measuring rod extension elongation is that the method for adjustment of survey boots measurement position is identical.
Since petroleum casing screw is taper thread, central diameter rule measuring rod is interfered in rotation with nipple in order to prevent,
The utility model central diameter advises measuring instrument measuring rod and is in tilted layout, and measures angle α=2~5 ° of rod axis and vertical direction.Slide
Be it is horizontal, measuring rod be it is inclined, the use of the new type central diameter advise measuring instrument measurement when, nipple end face and slide are wear-resisting
Plate fitting contact, measurement position are the vertical ranges for surveying boots center to slide wearing plate.
In the present invention in the scale design of diameter rule measuring instrument, graticule indicating length is to survey boots in the throwing of vertical direction
Shadow, in order to which accuracy of reading is convenient, staff gauge reticle is horizontal on measuring rod.Simultaneously, it is contemplated that slide bottom surface is wear-resisting with it
There are step-like difference in height △ S for plate, in the dial markings design of measuring rod, survey boots center and offset up △ S as scale quarter
The zero point of line.The design of dial markings, as shown in Figure 5.
, it is specified that surveying boots position L by taking certain specification nipple as an exampleS=70mm adjusts measuring rod according to the above method and stretches out length
Degree is designated as 70mm, at this point, distance L of the survey boots center to slide wearing plate.
L=70- △ S+ △ S=70=LS
As it can be seen that reading has good consistency with defined measurement position.
Detailed description of the invention:
Fig. 1 is the central diameter rule measuring instrument structural schematic diagram that the utility model carries graduation indication；
Fig. 2 is the central diameter rule measuring instrument schematic top plan view that the utility model carries graduation indication；
Fig. 3 is the central diameter rule measuring instrument measurement box thread connector central diameter schematic diagram that the utility model carries graduation indication；
Fig. 4 is the central diameter rule measuring instrument measurement male thread connector central diameter schematic diagram that the utility model carries graduation indication；
Fig. 5 is the central diameter rule measuring instrument measuring rod staff gauge reticle design drawing that the utility model carries graduation indication.
In figure:
1, connecting rod 2, slide 3, determine measuring rod
4, measuring rod 5, fixed device 6, dial gauge are moved
7, boots 8, jackscrew 9, wearing plate are surveyed
10, dial markings
α -- the vertical direction angle of measurement rod axis
Scale label pointing accuracy 1mm
Specific embodiment
The use for the central diameter rule measuring instrument that the utility model carries graduation indication is added with specific practical measuring examples in conjunction with attached drawing
With explanation.
The central diameter is advised the pitch diameter of thread of the measuring instrument for petroleum sleeve joint and is measured.As shown in Figure 1, two slides 2 pass through
A pair is arranged in parallel connecting rod 1 and is connected, and determines measuring rod 3 and dynamic measuring rod 4 is each passed through corresponding slide, wherein dynamic measuring rod is logical
It crosses fixed device 5 and connects dial gauge 6, survey the lower part that boots 7 are located at measuring rod.There is jackscrew 8 to fixed connecting rod and survey on slide
The position of gauge rod, slide bottom devise replaceable wearing plate 9.The central diameter advises the unique distinction of measuring instrument will be on measuring rod
Graduated scale is devised, to indicate the extension elongation of measuring rod.
When carrying out pitch diameter of thread measurement using the measuring instrument, what be can be convenient by visual observation determines that the stretching for surveying boots is long
Degree, precision are higher than the mode being adjusted by board foot, and easy and accurate.By exchanging measuring rod, which can
To realize that the central diameter to male thread and box thread measures.
Measuring instrument is first subjected to mark zero using preceding.The jackscrew on slide is unclamped, is adjusted according to measurement object and surveys boots direction, is adjusted
Whole survey boots extension elongation is reference with slide bottom surface, locks measuring rod jackscrew when scale label instruction reaches design requirement, will
Two survey boots extension elongations adjust consistent.Measuring instrument is carried out the measurement that the pitch diameter of thread can be carried out after mark zero above the mold,
It surveys boots and contacts screw thread tooth top, the very big and minimum of circumferencial direction measurement is pitch diameter of thread value.
As shown in figure 3, the utility model carries the method for the central diameter rule measuring instrument measurement box thread central diameter of graduation indication such as
Under:
1. horizontal positioned central diameter rule, adjust slide, boots are surveyed symmetrically outwardly.
2. unclamping the jackscrew on slide, boots extension elongation is surveyed in adjustment, is directly read, and locking is surveyed when scale reaches design requirement
Gauge rod jackscrew.Two survey boots adjust consistent.
3. central diameter rule are placed on above mold in mold subscript zero, central diameter rule measuring instrument, the position of connecting rod upper saddle is adjusted
It sets, so that dial gauge is in the middle position of compression range, screw the jackscrew of connecting rod.
4. hand-held connecting rod both ends, central diameter rule measuring instrument is slightly swung, and observes dial gauge, stops pendulum in its minimum indicating value
It moves and dial gauge returns to zero and lock.
5. central diameter rule measuring instrument is placed on box thread connector end face, measuring rod gos deep into inside box thread, surveys boots and contacts spiral shell
Line tooth top, successively rotation and wobble measurement instrument, can read the pitch diameter of thread value of each position, in the very big of 360 ° of circumferencial directions
It is pitch diameter of thread value with minimum.
(1) embodiment 1
Measure the central diameter value of a 7 〞 box threads.
1) inquire drawing, survey boots centre distance tip side identity distance from be 58mm, adjustment survey boots extension elongation, be locked at
The position 58mm.
2) mark zero is carried out in 7 〞 molds.All lock screws are unclamped, survey boots outwardly, adjust slide, percentage list index is mobile
When in the middle part of to range, slide is locked.Central diameter rule measuring instrument is slightly swung, and dial gauge indicating value is observed, in its minimum value by percentage
Table returns to zero and locks.
3) measurement of 7 〞 box thread central diameters is carried out, 360 ° of circumferencial direction measurements obtain maximum and the pole of the box cupling pitch diameter of thread
Small value.
As shown in figure 4, the utility model carries the method for the central diameter rule measuring instrument measurement male thread central diameter of graduation indication such as
Under: horizontal positioned central diameter rule adjust slide, survey boots symmetrically inwardly, other steps are same as above.
(2) embodiment 2
Measure the central diameter value of a 9.625 〞 male threads.
Mark zero is carried out using 9.625 〞 molds.Following operating procedure is the same as embodiment 1.
Claims (5)
1. a kind of central diameter of included graduation indication advises measuring instrument, it is characterized in that: include connecting rod structure and measurement rod structure, it is described
Connecting rod structure is a pair of of connecting rod (1) parallel across a pair of of slide (2) and a pair of of slide (2) symmetrical cloth on connecting rod (1)
Set, it is described measurement rod structure by be separately mounted on slide determine measuring rod (3) and dynamic measuring rod (4) is formed, the dynamic measurement
Bar is connected with dial gauge (6) by the fixation device (5) of upper end, sets respectively along the shaft for determining measuring rod (3) and dynamic measuring rod (4)
Have scale (10), it is described to determine measuring rod (3) and dynamic measuring rod (4) lower end is respectively arranged with and surveys boots (7).
2. the central diameter of included graduation indication according to claim 1 advises measuring instrument, it is characterized in that: the axis of the measuring rod
With vertical direction angle α=2~5 °.
3. the central diameter of included graduation indication according to claim 1 advises measuring instrument, it is characterized in that: the measuring rod high scale
Graticule is horizontally disposed.
4. the central diameter of included graduation indication according to claim 1 advises measuring instrument, it is characterized in that: the stretching of the measuring rod
It is consistent with the measurement position of requirement that length reads L.
5. the central diameter of included graduation indication according to claim 1 advises measuring instrument, it is characterized in that: by exchanging slide and surveying
Gauge rod measures internal screw thread or externally threaded central diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920396656.8U CN209689537U (en) | 2019-03-27 | 2019-03-27 | The central diameter of included graduation indication advises measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920396656.8U CN209689537U (en) | 2019-03-27 | 2019-03-27 | The central diameter of included graduation indication advises measuring instrument |
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| Publication Number | Publication Date |
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| CN209689537U true CN209689537U (en) | 2019-11-26 |
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| CN201920396656.8U Active CN209689537U (en) | 2019-03-27 | 2019-03-27 | The central diameter of included graduation indication advises measuring instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048858A (en) * | 2021-03-19 | 2021-06-29 | 重庆安全技术职业学院 | Convenient measuring device for architectural decoration design |
-
2019
- 2019-03-27 CN CN201920396656.8U patent/CN209689537U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048858A (en) * | 2021-03-19 | 2021-06-29 | 重庆安全技术职业学院 | Convenient measuring device for architectural decoration design |
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