CN110906900A - Method for measuring polished rod run-out and end face verticality by taking pitch diameter of threads as reference - Google Patents
Method for measuring polished rod run-out and end face verticality by taking pitch diameter of threads as reference Download PDFInfo
- Publication number
- CN110906900A CN110906900A CN201911209239.9A CN201911209239A CN110906900A CN 110906900 A CN110906900 A CN 110906900A CN 201911209239 A CN201911209239 A CN 201911209239A CN 110906900 A CN110906900 A CN 110906900A
- Authority
- CN
- China
- Prior art keywords
- measuring
- face
- bolt
- threads
- selecting
- 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.)
- Pending
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
- 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
- G01B21/22—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 angles or tapers; for testing the alignment of axes
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a method for measuring the runout and the end face verticality of a polished rod by taking the pitch diameter of a thread as a reference, which comprises the following steps: (1) installing a bolt; (2) selecting a probe; (3) determining a measuring point: selecting a plurality of uniformly distributed measuring points on a circle of threads; (4) establishing a benchmark: stretching a three-coordinate measuring probe (3) into a thread tooth socket (4) of a measured bolt (1) to acquire coordinate data and establish a reference; (5) measuring the jumping of the polish rod: the polished rod of the tested bolt (1) is subjected to contact measurement and acquisition to obtain a maximum value M and a minimum value M of the distance, and the jumping value t = M-M; (6) measuring the verticality of the end face: and (3) carrying out contact measurement acquisition on the outermost edge of the inner end face of the tested bolt (1) by using a three-coordinate measuring probe (3) to obtain a maximum value H and a minimum value H, and then, verticality D = H-H. The invention has the advantages of accuracy, reliability, simplicity, practicability, good effect and convenient operation, and is suitable for popularization and application of measurement of the runout and the end face verticality of the polished rod by taking the pitch diameter of the thread as a reference.
Description
Technical Field
The invention belongs to the technical field of measuring methods, and particularly relates to a method for measuring the runout and the end face verticality of a polished rod by taking the pitch diameter of a thread as a reference.
Background
The precision bolt is widely applied to an aeroengine, and in order to ensure the reliability of bolt installation, the runout and the end face verticality of a bolt polish rod are usually measured by taking the pitch diameter of a thread as a reference, but the pitch diameter of the thread is not a solid line segment but a virtual line segment.
The measuring mode in production adopts a mode of converting reference, the major diameter of the thread is used as a medium diameter to replace reference, or a coaxiality ring gauge is used for measuring form and position tolerance. However, the two methods have the greatest disadvantage of poor measurement accuracy, and cannot meet the measurement requirements of high-precision bolts.
The reasons for such problems with product production are: the major diameter of the thread formed by rolling is naturally formed by material flowing, the tolerance of jumping and roundness is large, the measurement error is large, and the jumping value of the bolt polished rod to the pitch diameter of the thread cannot be truly reflected due to reference conversion. The coaxiality ring gauge measurement mode is greatly influenced by the manufacturing precision. And a gap exists between the ring gauge and the precise bolt when the ring gauge is matched with the precise bolt, so that the measurement error is increased, and the form and position tolerance of the high-precision bolt cannot be met.
Disclosure of Invention
The invention aims to overcome the defects and provide the method for measuring the runout and the end face verticality of the polished rod by taking the pitch diameter of the thread as the reference, which is accurate, reliable, simple, practical, good in effect and convenient to operate.
The purpose of the invention and the main technical problem of solving the invention are realized by adopting the following technical scheme:
the invention discloses a method for measuring the runout of a polished rod and the perpendicularity of an end face by taking the pitch diameter of a thread as a reference, which comprises the following steps:
(1) installing bolts: mounting the tested bolt on a three-coordinate measuring table;
(2) selecting a probe: selecting a matched three-coordinate measuring probe according to the thread pitch P of the tested bolt, wherein the diameter d =0.577P of a contact head of the three-coordinate measuring probe;
(3) determining a measuring point: randomly selecting a circle of threads in the middle of a tested bolt, and selecting a plurality of uniformly distributed measuring points on the circle of threads;
(4) establishing a benchmark: and aiming at the measuring points selected in the step, extending a three-coordinate measuring probe into a thread tooth socket of the measured bolt, and when the three-coordinate measuring probe is contacted with tooth shapes on two sides of the thread tooth socket, acquiring coordinate data by the measuring probe, fitting the pitch diameter of the measured bolt, and establishing a reference.
(5) Measuring the jumping of the polish rod: selecting a plurality of uniformly distributed measuring points on the polished rod of the tested bolt, and performing contact type measurement acquisition on the polished rod of the tested bolt by means of a three-coordinate measuring probe according to the intermediate diameter reference established in the step (4) to obtain a maximum value M and a minimum value M of the distance, wherein the jumping value t = M-M;
(6) measuring the verticality of the end face: selecting a plurality of uniformly distributed measuring points on the outermost edge of the inner end face of the head of the measured bolt, and carrying out contact type measurement acquisition on the outermost edge of the inner end face of the measured bolt by means of a three-coordinate measuring probe according to the intermediate diameter reference established in the step to obtain the maximum value H and the minimum value H, wherein the verticality D = H-H.
The method for measuring the polished rod bounce and the end face verticality by taking the pitch diameter of the threads as the reference comprises the following steps: in the step (3), 3-5 measuring points are selected on the threads.
The method for measuring the polished rod bounce and the end face verticality by taking the pitch diameter of the threads as the reference comprises the following steps: and (5) selecting 5-10 measuring points on the light bar.
The method for measuring the polished rod bounce and the end face verticality by taking the pitch diameter of the threads as the reference comprises the following steps: in the step (6), 5-10 measuring points are selected on the outermost edge of the inner end face.
Compared with the prior art, the invention has obvious advantages and beneficial effects. According to the technical scheme, in the method for measuring the polished rod bounce and the end face verticality by taking the pitch diameter of the threads as the reference, the measurement is completed by the steps of installing bolts, selecting probes, determining measurement points, establishing the reference, measuring the polished rod bounce and measuring the end face verticality and the like, and the pitch diameter is more accurate and reliable by taking the pitch diameter as the reference; selecting a matched three-coordinate measuring probe according to the thread pitch P of the tested bolt, wherein the diameter d =0.577P of a contact head of the three-coordinate measuring probe, so that an accurate measurement value can be obtained by means of the three-coordinate measuring probe; in the step (3), 3-5 measuring points are selected on the threads, 5-10 measuring points are selected on the light bar in the step (5), and 5-10 measuring points are selected on the outermost edge of the inner end face in the step (6), so that the measured value is more reliable. In a word, the invention is accurate, reliable, simple and practical, has good effect and convenient operation, and is suitable for popularization and application of the measurement of the runout of the polished rod and the end face verticality by taking the pitch diameter of the thread as a reference.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial enlarged view of a in FIG. 1;
fig. 3 is a using state diagram of end face verticality measurement.
The labels in the figure are:
1. a tested bolt; 2. a three-coordinate measuring table; 3. a three-coordinate measurement probe; 4. a thread socket.
Detailed Description
The method, structure, features and effects of the present invention for measuring the run-out and end face verticality of a polished rod based on the pitch diameter of a thread are described in detail below with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1 to 3, the method for measuring the polished rod runout and the end face verticality by taking the pitch diameter of the threads as the reference comprises the following steps:
(1) installing bolts: installing a tested bolt 1 on a three-coordinate measuring table 2;
(2) selecting a probe: selecting a matched three-coordinate measuring probe 3 according to the thread pitch P of the tested bolt 1, wherein the diameter d of a contact head of the three-coordinate measuring probe 3 is = 0.577P;
(3) determining a measuring point: randomly selecting a circle of threads in the middle of a tested bolt 1, and selecting a plurality of uniformly distributed measuring points on the circle of threads;
(4) establishing a benchmark: aiming at the measuring points selected in the step 3, a three-coordinate measuring probe 3 is inserted into a thread tooth socket 4 of the measured bolt 1, when the three-coordinate measuring probe 3 is contacted with tooth shapes on two sides of the thread tooth socket 4, the measuring probe 3 collects coordinate data, fits the intermediate diameter of the measured bolt 1 and establishes a reference;
(5) measuring the jumping of the polish rod: selecting a plurality of uniformly distributed measuring points on the polished rod of the tested bolt 1, and carrying out contact type measurement and acquisition on the polished rod of the tested bolt 1 by means of the three-coordinate measuring probe 3 according to the intermediate diameter reference established in the step 4 to obtain a maximum value M and a minimum value M of the distance, wherein the jumping value t = M-M;
(6) measuring the verticality of the end face: selecting a plurality of uniformly distributed measuring points on the outermost edge of the inner end face of the head of the measured bolt 1, and performing contact measurement acquisition on the outermost edge of the inner end face of the measured bolt 1 by means of the three-coordinate measuring probe 3 on the basis of the intermediate diameter established in the step 4 to obtain a maximum value H and a minimum value H, wherein the verticality D = H-H.
In the step (3), 3-5 measuring points are selected on the threads. And (5) selecting 5-10 measuring points on the light bar. In the step (6), 5-10 measuring points are selected on the outermost edge of the inner end face.
The invention has the advantages of accuracy, reliability, simplicity, practicability, good effect and convenient operation, and is suitable for popularization and application of measurement of the runout and the end face verticality of the polished rod by taking the pitch diameter of the thread as a reference.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the present invention without departing from the technical spirit of the present invention.
Claims (4)
1. A method for measuring the runout and the end face verticality of a polished rod by taking the pitch diameter of a thread as a reference comprises the following steps:
(1) installing bolts: installing a tested bolt (1) on a three-coordinate measuring table (2);
(2) selecting a probe: selecting a matched three-coordinate measuring probe (3) according to the thread pitch P of the tested bolt (1), wherein the diameter d =0.577P of a contact head of the three-coordinate measuring probe (3);
(3) determining a measuring point: randomly selecting a circle of threads in the middle of a tested bolt (1), and selecting a plurality of uniformly distributed measuring points on the circle of threads;
(4) establishing a benchmark: aiming at the measuring point selected in the step (3), a three-coordinate measuring probe (3) is inserted into a thread tooth socket (4) of the measured bolt (1), when the three-coordinate measuring probe (3) is contacted with tooth patterns on two sides of the thread tooth socket (4), the measuring probe (3) acquires coordinate data, fits the middle diameter of the measured bolt (1), and establishes a reference;
(5) measuring the jumping of the polish rod: selecting a plurality of uniformly distributed measuring points on the polished rod of the tested bolt (1), and carrying out contact type measurement and acquisition on the polished rod of the tested bolt (1) by means of a three-coordinate measuring probe (3) according to the intermediate diameter standard established in the step (4) to obtain a maximum value M and a minimum value M of the distance, wherein the jumping value t = M-M;
(6) measuring the verticality of the end face: selecting a plurality of uniformly distributed measuring points on the outermost edge of the inner end face of the head of the measured bolt (1), and performing contact type measurement acquisition on the outermost edge of the inner end face of the measured bolt (1) by means of a three-coordinate measuring probe (3) according to the intermediate diameter standard established in the step (4) to obtain a maximum value H and a minimum value H, wherein the perpendicularity D = H-H.
2. The method for measuring the run-out and the end face verticality of the polish rod by taking the pitch diameter of the threads as the reference of claim 1, wherein the method comprises the following steps: in the step (3), 3-5 measuring points are selected on the threads.
3. The method for measuring the run-out and the end face verticality of the polish rod by taking the pitch diameter of the threads as the reference of claim 1, wherein the method comprises the following steps: and (5) selecting 5-10 measuring points on the light bar.
4. The method for measuring the run-out and the end face verticality of the polish rod by taking the pitch diameter of the threads as the reference of claim 1, wherein the method comprises the following steps: in the step (6), 5-10 measuring points are selected on the outermost edge of the inner end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911209239.9A CN110906900A (en) | 2019-11-30 | 2019-11-30 | Method for measuring polished rod run-out and end face verticality by taking pitch diameter of threads as reference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911209239.9A CN110906900A (en) | 2019-11-30 | 2019-11-30 | Method for measuring polished rod run-out and end face verticality by taking pitch diameter of threads as reference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110906900A true CN110906900A (en) | 2020-03-24 |
Family
ID=69821158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911209239.9A Pending CN110906900A (en) | 2019-11-30 | 2019-11-30 | Method for measuring polished rod run-out and end face verticality by taking pitch diameter of threads as reference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110906900A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552980A (en) * | 1978-06-23 | 1980-01-10 | Takayuki Kodama | Rule for stairway side plate |
| JP2001272215A (en) * | 2000-03-23 | 2001-10-05 | Niigata Eng Co Ltd | Measuring method of screw, apparatus therefor and determining apparatus for propriety of shape of screw |
| CN102221349A (en) * | 2011-04-01 | 2011-10-19 | 浙江大学宁波理工学院 | Method for eliminating error of cylinder screw thread non-contact measurement |
| CN103615960A (en) * | 2013-12-16 | 2014-03-05 | 南车戚墅堰机车车辆工艺研究所有限公司 | External thread coaxiality measuring device and measuring method |
| CN104457608A (en) * | 2013-09-16 | 2015-03-25 | 上海航天精密机械研究所 | Cylinder size error detection system |
| CN107167078A (en) * | 2017-05-23 | 2017-09-15 | 扬州大学 | A kind of multiple degrees of freedom laser displacement sensor system and spiral bevel gear measuring method |
| CN105043200B (en) * | 2015-09-09 | 2017-10-31 | 广西玉柴机器股份有限公司 | The pulsation measurement device of bolt |
| CN108592795A (en) * | 2018-06-06 | 2018-09-28 | 中国计量科学研究院 | A kind of thread parameter measurement device based on spectral confocal sensor |
-
2019
- 2019-11-30 CN CN201911209239.9A patent/CN110906900A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS552980A (en) * | 1978-06-23 | 1980-01-10 | Takayuki Kodama | Rule for stairway side plate |
| JP2001272215A (en) * | 2000-03-23 | 2001-10-05 | Niigata Eng Co Ltd | Measuring method of screw, apparatus therefor and determining apparatus for propriety of shape of screw |
| CN102221349A (en) * | 2011-04-01 | 2011-10-19 | 浙江大学宁波理工学院 | Method for eliminating error of cylinder screw thread non-contact measurement |
| CN104457608A (en) * | 2013-09-16 | 2015-03-25 | 上海航天精密机械研究所 | Cylinder size error detection system |
| CN103615960A (en) * | 2013-12-16 | 2014-03-05 | 南车戚墅堰机车车辆工艺研究所有限公司 | External thread coaxiality measuring device and measuring method |
| CN105043200B (en) * | 2015-09-09 | 2017-10-31 | 广西玉柴机器股份有限公司 | The pulsation measurement device of bolt |
| CN107167078A (en) * | 2017-05-23 | 2017-09-15 | 扬州大学 | A kind of multiple degrees of freedom laser displacement sensor system and spiral bevel gear measuring method |
| CN108592795A (en) * | 2018-06-06 | 2018-09-28 | 中国计量科学研究院 | A kind of thread parameter measurement device based on spectral confocal sensor |
Non-Patent Citations (1)
| Title |
|---|
| 王庆广等: "三坐标测量机测量外螺纹螺距和中径的方法", 《计量技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109839047A (en) | A kind of piece surface hole site and center are away from dimension detection tool | |
| CN110631534B (en) | Method for detecting pitch diameter and pitch of taper thread of oil sleeve joint | |
| CN202024752U (en) | Coaxiality measuring instrument | |
| CN102278933A (en) | Measuring method and measuring device for stick span length of cylindrical straight tooth involute spline ring gauge | |
| CN102003931A (en) | Comprehensive detection method and device of tool tapered handle (7:24) | |
| CN101271039B (en) | Angular contact ball bearing ferrule locking amount measurement method | |
| CN110906900A (en) | Method for measuring polished rod run-out and end face verticality by taking pitch diameter of threads as reference | |
| CN104833304A (en) | Inspection instrument for pressure vessel ellipsoidal head based on ellipsograph | |
| CN204373533U (en) | A kind of vernier caliper surveying the core diameter of thread | |
| CN103615960A (en) | External thread coaxiality measuring device and measuring method | |
| CN204269016U (en) | A kind of measurement cubing | |
| CN202947665U (en) | Roll neck blind hole symmetry measurement instrument | |
| CN102889834B (en) | Pitch diameter of taper thread plug gauge measuring method | |
| CN105783628B (en) | Threaded hole detects gauge and detection device | |
| CN205448927U (en) | A gauge for measuring internal thread degree of depth | |
| CN210981108U (en) | Internal spline tooth top circle diameter inspection fixture | |
| CN110631538A (en) | Measuring method for perpendicularity of end face | |
| CN103363872B (en) | A kind of detection method of rotation axis verticality and device | |
| CN205957844U (en) | Measure bridge plate of position accuracy between prism guide rail and dovetail guide rail | |
| CN102798327A (en) | Check tool for excircle diameter | |
| CN102032853A (en) | Method for measuring groove center distance of outer groove of bearing | |
| CN215984254U (en) | Micrometer capable of measuring step length of shaft part | |
| CN203323676U (en) | Auxiliary gauge for measuring cylinder cover installing slot | |
| CN215338113U (en) | Measuring tool for measuring aperture size | |
| CN216049506U (en) | Vernier caliper for measuring pitch-row |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200324 |
|
| RJ01 | Rejection of invention patent application after publication |