CN107202528B - Non-flaring pipe joint end size measuring device - Google Patents
Non-flaring pipe joint end size measuring device Download PDFInfo
- Publication number
- CN107202528B CN107202528B CN201710495207.4A CN201710495207A CN107202528B CN 107202528 B CN107202528 B CN 107202528B CN 201710495207 A CN201710495207 A CN 201710495207A CN 107202528 B CN107202528 B CN 107202528B
- Authority
- CN
- China
- Prior art keywords
- pipe joint
- ball seat
- joint part
- flaring
- steel ball
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
A non-flaring pipe joint end size measuring device belongs to the technical field of testing and measuring. The non-flaring pipe joint end head size measuring device comprises a steel ball, a ball seat and a spiral micrometer; the ball seat is of a cavity structure, a first internal thread matched with the measured pipe joint part without the flaring is arranged at the front end of the ball seat, and a second internal thread matched with the screw micrometer is arranged at the rear end of the ball seat; the steel ball is arranged in a cavity inside the ball seat in a floating assembly mode, and the diameter D of the steel ball 2 Diameter dimension d of measured non-flared pipe joint part inner hole P point 2 Corresponding; and a measuring head of the spiral micrometer penetrates into the cavity of the ball seat and is abutted against the steel ball which is assembled in a floating manner. The invention improves the measurement precision of the pipe joint part without the flaring through accurately measuring the value A of the pipe joint part without the flaring, and achieves the purposes of reducing the rejection rate of the pipe joint part without the flaring and reducing the manufacturing or maintenance cost of the pipe joint part without the flaring.
Description
Technical Field
The invention relates to a measuring device, in particular to an end head size measuring device for a hydraulic pipeline flareless pipe joint, and belongs to the technical field of testing and measuring.
Background
As shown in figure 1, the hydraulic pipeline flareless pipe joint part 1 applied to industrial and national defense special equipment has high hydraulic strength, is made of steel pipe materials, has very high precision and requires a connectorThe error of the position is very small, the outer pipe diameter of the end part is D, an inner hole 1-1 with the taper angle alpha =24 degrees is arranged, and the diameter of the small end of the inner hole 1-1 is D 1 The diameter of the inner hole 1-1 of the flareless pipe joint part 1 and the sleeve pipe part is d 2 At the position of (i.e. point P in fig. 1) with the aperture d 2 The distance from the position (point P in the attached drawing 1) to the end of the flareless pipe joint part 1 is A, in order to ensure the matching relationship between the flareless pipe joint part 1 and the sleeve part, according to the related technical requirements, the value A of the flareless pipe joint part 1 is the key control size, and the tolerance range of the value A is-0.12 to +0.12, so the value A of the flareless pipe joint part 1 is not required to be detected before the flareless pipe joint part 1 is assembled with the sleeve part.
In the prior art, a plug gauge is adopted to perform a light transmittance test aiming at the detection problem of the A value of a non-flared pipe joint part, and whether the non-flared pipe joint part meets the requirement or not is judged in a qualitative detection mode. Because the manufacturing cost of parts in precision instruments and equipment is high, the deviation of the A value of the pipe joint part without the flaring can not be accurately measured by the qualitative detection mode, and particularly, the part joint part without the flaring in a critical state is easy to cause misjudgment, so that the rejection rate of the part is increased, and the manufacturing or maintenance cost of the pipe joint part without the flaring is increased.
Disclosure of Invention
The invention provides a device for measuring the end size of a pipe joint without an expanded opening, which aims to achieve the purposes of improving the measurement precision of the pipe joint part without the expanded opening and reducing the rejection rate of the pipe joint part without the expanded opening by accurately measuring the value A of the pipe joint part without the expanded opening.
In order to achieve the purpose, the invention adopts the following technical scheme:
a non-flaring pipe joint end size measuring device comprises a steel ball, a ball seat and a spiral micrometer; the ball seat is of a cavity structure, a first internal thread matched with the measured non-flared pipe joint part is arranged at the front end of the ball seat, and a second internal thread matched with the screw micrometer is arranged at the rear end of the ball seat; the steel ball is arranged in a cavity inside the ball seat in a floating assembly mode, and the diameter D of the steel ball 2 Diameter dimension d of measured non-flared pipe joint part inner hole P point 2 Corresponding; and a measuring head of the spiral micrometer penetrates into the cavity of the ball seat and is abutted against the steel ball which is assembled in a floating manner.
The diameter of the steel ball is the same as that of the end of the pipe joint without the flaring
Wherein alpha is the taper angle of the inner hole at the end part of the measured flareless pipe joint part.
According to the flaring-free pipe joint end size measuring device, the steel ball is suspended in the cavity in the ball seat through the vertically intersected group of springs, and correspondingly, the spring accommodating holes which are perpendicular to each other are formed in the cavity in the middle of the ball seat.
According to the non-flared pipe joint end size measuring device, the datum line B corresponding to the value of the non-flared pipe joint part A is marked on the horizontal scale line of the spiral micrometer, and the vertical deviation numerical value corresponding to the value of the non-flared pipe joint part A is marked in the area of the rotary scale line C of the spiral micrometer.
The device for measuring the end size of the pipe joint without the flaring is additionally provided with a group of adjusting gaskets (2-5), and the adjusting gaskets (2-5) are arranged on the outer ring end face of the ball seat (2-2) contacted with the measuring head (2-4-1).
After the technical scheme is adopted, the invention has the following beneficial effects:
the device for measuring the end size of the non-flared pipe joint can accurately determine the position of a P point with the distance A from the end of the non-flared pipe joint part by matching the steel ball with the set size with the inner hole of the end of the measured non-flared pipe joint part, and then accurately read the upper deviation or the lower deviation of the value A by a spiral micrometer, thereby realizing the quantitative detection of the value A of the measured non-flared pipe joint part; the invention can be accurately selected according to the size of the A value of the pipe joint, and adopts a non-flaring conduit selection assembly process, thereby not only ensuring the assembly quality, but also reducing the maintenance cost.
The invention meets the coaxiality requirements of the measured workpiece, the steel ball and the measuring head of the spiral micrometer through the steel ball assembled in a floating way, and ensures the accuracy of the measuring result. Therefore, the invention improves the measurement precision of the non-flared pipe joint part by accurately measuring the value A of the non-flared pipe joint part, and particularly can accurately judge whether the non-flared pipe joint part meets the technical requirements or not by comparing the measured value with the standard value for the non-flared pipe joint part in a critical state, thereby achieving the purpose of reducing the rejection rate of the non-flared pipe joint part and the manufacturing or maintenance cost of the non-flared pipe joint part.
Drawings
FIG. 1 is a schematic view of a flareless fitting construction;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the M-M cross-sectional structure of FIG. 2;
FIG. 4 is a schematic cross-sectional view of a ball seat;
FIG. 5 is a schematic view of the working state of the device for measuring the end size of the flareless pipe joint according to the present invention;
FIG. 6 is an expanded view of the area of the rotation scale C of the micrometer;
fig. 7 is a working schematic diagram of the device for measuring the end size of the flareless pipe joint according to the present invention.
The list of labels in the figure is: 1. the pipe joint comprises, by weight, 1-1 parts of a pipe joint without a flared opening, 2-1 parts of an inner hole, 2 parts of a pipe joint end size measuring device, 2-1 parts of a steel ball, 2-2 parts of a ball seat, 2-2-1 parts of a first inner thread, 2-2-2 parts of a spring accommodating cavity, 2-2-3 parts of a second inner thread, 2-3 parts of a spring, 2-4 parts of a spiral micrometer, 2-4-1 parts of a measuring head, 2-5 parts of an adjusting pad.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Referring to fig. 2 and 4, the non-flaring pipe joint end size measuring device 2 comprises a steel ball 2-1, a ball seat 2-2 and a spiral micrometer 2-4; the ball seat 2-2 is of a cavity structure, the front end of the ball seat is provided with a first internal thread 2-2-1 matched with the measured non-flared pipe joint part 1, and the rear end of the ball seat is provided with a second internal thread 2-2-3 matched with the screw micrometer 2-4; what is needed isThe steel ball 2-1 is arranged in the inner cavity of the ball seat 2-2 in a floating assembly mode, and the diameter of the steel ball
In the formula d 2 In order to measure the diameter size of a point P in an inner hole 1-1 of the flareless pipe joint part 1, and alpha is the taper angle of the inner hole 1-1 at the end part of the flareless pipe joint part 1, a group of steel balls with different diameters can be correspondingly arranged for the flareless pipe joint part 1 with different diameters, and the preferred embodiment is shown in the following table (because d is the diameter size of a point P in the flareless pipe joint part 1 and alpha is the taper angle of the inner hole 1-1 at the end part of the flareless pipe joint part 1 to be measured) 2 The theoretical size value is in one-to-one correspondence with the outer diameter D of the measured end part of the pipe joint part without the flaring, and the table lists the diameter sizes D of a group of steel balls corresponding to the outer diameters D of the end parts of different pipe joint parts without the flaring for convenient actual operation 2 )。/>
| D | 5 | 6 | 8 | 10 |
| D 2 | 6.646 | 7.668 | 9.712 | 11.756 |
Referring to fig. 2 and 4, in the non-flaring pipe joint end head size measuring device 2, a measuring head 2-4-1 of a spiral micrometer 2-4 penetrates into a cavity of a ball seat 2-2 and is abutted to a steel ball 2-1 which is in floating assembly.
Referring to fig. 2 and 3, in the pipe joint end size measuring device 2 according to the present invention, the steel ball 2-1 is suspended in the inner cavity of the ball seat 2-2 by a vertically crossing set of springs 2-3, and accordingly, mutually perpendicular spring receiving holes 2-2-2 are formed in the central cavity of the ball seat 2-2.
Referring to fig. 2, 5 and 6, in the pipe joint end size measuring device 2, a reference line B is marked on a horizontal scale of a spiral micrometer 2-4, the reference line B corresponds to a value a of a standard pipe joint part without a flared end, a group of adjusting gaskets 2-5 with different thicknesses for ensuring that the reference line B corresponds to the value a are additionally arranged, and when the reference line B does not correspond to the value a, the reference line B corresponds to the value a by selecting a proper adjusting gasket 2-5 to place at an outer ring end face where the ball seat 2-2 is in contact with the measuring head 2-4-1, so that the reference line B corresponds to the value a and is used as a reference for measuring the size of the pipe joint end without the flared end. According to the invention, an up-down deviation numerical value corresponding to the value A of the pipe joint part without the flaring is marked in the area C of the rotary scale mark of the spiral micrometer, and the deviation numerical value interval is +/-0.12.
Referring to fig. 5, 6 and 7, the end size measuring device 2 of the flareless pipe joint according to the present invention sets the diameter size D 2 The steel ball 2-1 is matched with an inner hole 1-1 in the end head of the measured flaring-free pipe joint part, so that the position of a point P with the distance A from the end part of the flaring-free pipe joint part 1 can be accurately determined. In FIG. 7, PB is the radius D of the steel ball 2 Per 2, PC is the radius d of the point P in the inner bore 1-1 of the measured flareless fitting part 1 2 2, deriving from the geometrical relationship of the parts in the figure
Namely: />
This yields: />
The non-flared pipe joint end size measuring device 2 can accurately read the upper deviation or the lower deviation of the A value through the spiral micrometer 2-4, and fig. 5 is a specific embodiment for measuring the A value of the non-flared pipe joint part 1 and is used for detecting the non-flared pipe joint part with the A value of 0.24mm, so that the reference value of the A value of the non-flared pipe joint part is set to be 0.24mm, the reference line B is correspondingly set to be a value position of 0.24mm on a horizontal scale line, during the measuring process, a vernier of the spiral micrometer 2-4 is positioned in an area near the reference line B, and when a negative scale value in an area of a rotary scale line C is aligned with the reference line of the spiral micrometer, the read value is the lower deviation of the A value; and when the positive number scale value in the area of the rotary scale mark C is aligned with the reference line of the spiral micrometer, the read numerical value is the deviation on the A value. />
Claims (1)
1. A pipe joint end size measuring device without flaring is characterized in that the pipe joint end size measuring device (2) comprises a steel ball (2-1), a ball seat (2-2) and a spiral micrometer (2-4); the ball seat (2-2) is of a cavity structure, the front end of the ball seat is provided with a first internal thread (2-2-1) matched with the measured flareless pipe joint part (1), and the rear end of the ball seat is provided with a second internal thread (2-2-3) matched with the screw micrometer (2-4); the steel ball (2-1) is arranged in an inner cavity of the ball seat (2-2) in a floating assembly mode, and the diameter D2 of the steel ball corresponds to the diameter D2 of a point P in an inner hole (1-1) of the measured flaring-free pipe joint part (1); a measuring head (2-4-1) of the spiral micrometer (2-4) penetrates into a cavity of the ball seat (2-2) and is abutted against the steel ball (2-1) which is in floating assembly;
diameter of the steel ball
In the method, alpha is the taper angle of an inner hole (1-1) at the end part of a measured non-flaring pipe joint part (1);
the steel ball (2-1) is suspended in an inner cavity of the ball seat (2-2) through a group of vertically intersected springs (2-3), and correspondingly, mutually perpendicular spring accommodating holes (2-2-2) are formed in a middle cavity of the ball seat (2-2);
marking a datum line B corresponding to the value of the A of the pipe joint part without the flared opening on a horizontal scale mark of the spiral micrometer (2-4), and marking an up-and-down deviation numerical value corresponding to the value of the A of the pipe joint part without the flared opening in an area of a rotary scale mark C of the spiral micrometer;
the end head size measuring device of the pipe joint without the flaring is additionally provided with a group of adjusting gaskets (2-5), and the adjusting gaskets (2-5) are arranged on the outer ring end face of the ball seat (2-2) contacted with the measuring head (2-4-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710495207.4A CN107202528B (en) | 2017-06-26 | 2017-06-26 | Non-flaring pipe joint end size measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710495207.4A CN107202528B (en) | 2017-06-26 | 2017-06-26 | Non-flaring pipe joint end size measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107202528A CN107202528A (en) | 2017-09-26 |
| CN107202528B true CN107202528B (en) | 2023-04-14 |
Family
ID=59907836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710495207.4A Active CN107202528B (en) | 2017-06-26 | 2017-06-26 | Non-flaring pipe joint end size measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107202528B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109405707A (en) * | 2018-11-15 | 2019-03-01 | 中国人民解放军第五七二工厂 | A kind of device with micrometer detection pipe sleeve seal line position |
| CN109405697B (en) * | 2018-11-15 | 2024-06-04 | 中国人民解放军第五七二一工厂 | Device for detecting pipe sleeve sealing line position by dial indicator |
| CN110245439B (en) * | 2019-06-20 | 2022-04-08 | 成都飞机工业（集团）有限责任公司 | Mounting error modeling and compensating method for flared conduit |
| CN115540715B (en) * | 2022-11-30 | 2023-03-24 | 北京成立科技有限公司 | Non-flaring pipeline connection installation deviation detection device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5793202A (en) * | 1980-12-01 | 1982-06-10 | Toyota Motor Corp | Measurer for three-dimensional displacement |
| JP2002257503A (en) * | 2001-03-02 | 2002-09-11 | Kawasaki Steel Corp | Device and method for measuring screw diameter of steel pipe joint |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201964853U (en) * | 2010-12-02 | 2011-09-07 | 贵州航太精密制造有限公司 | Measuring device for sealing inner conical surface of tube union |
| CN102032849B (en) * | 2010-12-04 | 2012-07-04 | 江苏飞船股份有限公司 | Micrometer for measuring over-ball distance between external gear and external spline |
| CN202547570U (en) * | 2012-04-10 | 2012-11-21 | 上海宇航***工程研究所 | Inner-cone-angle measuring tool for pipeline connecting piece with external threads |
| CN103486943A (en) * | 2013-09-12 | 2014-01-01 | 浙江吉利控股集团有限公司 | Taper hole depth detecting device |
| CN203704845U (en) * | 2014-01-23 | 2014-07-09 | 上海长锐汽车零部件有限公司 | Universal joint outer star wheel fairway 120 degree indexing difference measuring tool |
| CN204154246U (en) * | 2014-11-24 | 2015-02-11 | 重庆长安汽车股份有限公司 | A kind of taper hole Quick checking tool for depth |
| CN207035980U (en) * | 2017-06-26 | 2018-02-23 | 中国人民解放军第五七二一工厂 | A kind of flareless pipe joint termination dimension measuring device |
-
2017
- 2017-06-26 CN CN201710495207.4A patent/CN107202528B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5793202A (en) * | 1980-12-01 | 1982-06-10 | Toyota Motor Corp | Measurer for three-dimensional displacement |
| JP2002257503A (en) * | 2001-03-02 | 2002-09-11 | Kawasaki Steel Corp | Device and method for measuring screw diameter of steel pipe joint |
Non-Patent Citations (1)
| Title |
|---|
| 高精度薄壁管零件的工艺优化和加工技巧;雷立勇 等;《金属加工(冷加工)》(第4期);第34-36页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107202528A (en) | 2017-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107202528B (en) | Non-flaring pipe joint end size measuring device | |
| CN106705900B (en) | Hole-shape-adaptive inner hole cylindricity pneumatic composite detection device and measurement method | |
| CN102679941A (en) | Device for detecting taper of outer cone of conical ring | |
| CN106500564B (en) | A kind of small segmental arc thin-walled sheet metal part detection method of major diameter | |
| CN105258636B (en) | A kind of positioning hole optical detecting method | |
| CN109341494A (en) | The quickly device of detection inner bore chamfering depth | |
| CN110081792B (en) | Method for measuring puckered mouth at end of steel pipe or radial deviation of outer wall of steel pipe | |
| CN106895768B (en) | Ring groove diameter gauge | |
| CN107990803A (en) | Screw thread hole position detection device | |
| CN205679172U (en) | Pore Diameter Detection plug | |
| CN106052536A (en) | Deep hole coaxiality measuring tool | |
| CN207035980U (en) | A kind of flareless pipe joint termination dimension measuring device | |
| CN208720959U (en) | A kind of automobile forging parts internal diameter is logical only to check measurer | |
| CN207556764U (en) | A kind of simulation leak test formula valve seat insert band leakproofness measuring device | |
| CN109405697B (en) | Device for detecting pipe sleeve sealing line position by dial indicator | |
| CN205426046U (en) | Detect gauge of barrel rifle internal diameter | |
| CN107044815B (en) | Special gauge for size and position degree of spigot of engine bearing cover and detection method | |
| CN209085507U (en) | The device for fast detecting of inner bore chamfering depth | |
| CN108458646A (en) | A kind of the concentricity calibrating installation and calibration method of tapping equipment main shaft and even case | |
| CN209416231U (en) | A kind of device of measure annular slot outside diameter size | |
| CN110715624A (en) | Detection tool and detection method for pneumatically detecting taper angle | |
| CN103884252B (en) | The gauge of a kind of short circular arc concave ball shape face size measuring long shaft part and method | |
| CN206378111U (en) | A kind of adaptive pneumatic combination detection device of endoporus cylindricity of hole shape | |
| CN205940387U (en) | Utensil is examined to special measurement of annular diameter in part | |
| CN104019727A (en) | Method for measuring spherical outside surface of bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |