CN103615960A - External thread coaxiality measuring device and measuring method - Google Patents
External thread coaxiality measuring device and measuring method Download PDFInfo
- Publication number
- CN103615960A CN103615960A CN201310686336.3A CN201310686336A CN103615960A CN 103615960 A CN103615960 A CN 103615960A CN 201310686336 A CN201310686336 A CN 201310686336A CN 103615960 A CN103615960 A CN 103615960A
- Authority
- CN
- China
- Prior art keywords
- measurer
- piece
- metering pin
- measuring
- thread
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 10
- 230000001808 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Abstract
The invention discloses an external thread coaxiality measuring device and an external thread coaxiality measuring method. The device comprises a dial indicator, a measuring tool block, at least two standard measuring pins, a limiting device, a supporting device and a foundation bed, wherein the measuring tool block is provided with an upper surface and a lower surface; the limiting device comprises a radial limiting rod, an axial limiting rod, a measuring pin tightening rod and a screw, wherein the radial limiting rod and the axial limiting rod are respectively arranged beside one end surface of the measuring tool block and beside the side surface; the measuring pin tightening rod is arranged beside the other end surface of the measuring tool block; one end of the screw is connected on the standard measuring pins, and the other end of the screw is connected on the measuring pin tightening rod. The method comprises the following steps: placing the at least two standard measuring pins into two threaded grooves of a measured workpiece, and pressing by the measuring tool block; adjusting the supporting device and enabling the measuring tool block to be horizontal, and carrying out radial and axial limiting onto the measuring tool block by the radial limiting rod and the axial limiting rod; and rotating the measured workpiece until one circle, wherein the maximal indicated difference value of the dial indicator is the coaxiality error of threads. The device and the method disclosed by the invention are convenient in site detection, accurate and reliable.
Description
Technical field
The present invention relates to a kind of morpheme error detecting apparatus and measuring method of part, especially relate to a kind of pick-up unit and measuring method of external thread right alignment.
Background technology
In mechanical part, applying a large amount of bolts and connecting, and for the high-strength bolt in some important spare parts, for fear of causing the internal stress of screw thread to increase in assembling process, the right alignment of the relative common centreline of General Requirements screw thread is higher.For example, the coupling bolt that the built-up piston in highly-intensified diesel engine is used, the coaxiality error of threaded portion is less than 0.02mm.Thread coaxiality tolerance refers to the parallel and droop error of central diameter center line with reference center's line of screw thread.If this error is excessive, can cause the internal stress of the rear bolt thread part of assembling to increase, this is one of reason of some bolt threads fractures.
Just because of thread coaxiality, refer to the central diameter axis of screw thread, so be all the difficult point that bolt manufacturing detects all the time.Although also there is the correlation technique that detects external thread right alignment at present, general all for screw thread checking device, this needs special device, special clock gauge etc., is not suitable for on-the-spot detection.Therefore, the right alignment for bolt in production run does not generally detect, and just by machining process, guarantees.This has just caused a blind area in bolt manufacture, cannot directly evaluate the quality of technique.
Summary of the invention
The first object of the present invention is to provide a kind of Site Detection convenient, accurately and reliably external thread coaxality measuring mechanism.
The second object of the present invention is to provide a kind of Site Detection convenient, accurately and reliably external thread method for measuring coaxiality.
In order to reach above-mentioned the first object, technical scheme of the present invention is: a kind of external thread coaxality measuring mechanism, comprise clock gauge, measurer piece, standard metering pin, stop means, bracing or strutting arrangement and pedestal, described measurer piece has upper surface and lower surface, described standard metering pin is at least two, stop means and bracing or strutting arrangement are all fixed on pedestal, described stop means comprises radially gag lever post, axial limiting bar, metering pin tie rod and silk thread, described radially gag lever post, axial limiting bar lays respectively at by an end face side and side of measurer piece, described metering pin tie rod is positioned at by the other end of measurer piece, one end of described silk thread is connected on standard metering pin, the other end is connected on metering pin tie rod, during detection, the gauge head of described clock gauge contacts with the upper surface of measurer piece, described standard metering pin contacts with a place of the lower surface of measurer piece, another place of the lower surface of described bracing or strutting arrangement and measurer piece offsets.
Upper surface and the lower surface of described measurer piece are parallel to each other.
Described bracing or strutting arrangement comprises spherical head and threaded bar portion.
The radially gag lever post of described stop means, axial limiting bar include head be spherical bar and with the pole socket of bar threaded engagement.
In order to reach above-mentioned the second object, technical scheme of the present invention is: a kind of external thread method for measuring coaxiality that adopts above-mentioned external thread coaxality measuring mechanism, comprises the following steps:
A, utilize coaxial top of lathe or testing table two ends two to head in the respective central holes at measured workpiece two ends, then the other one end that is connected to the silk thread on standard metering pin is fixed on metering pin tie rod, again two standard metering pins are put into respectively to two thread grooves of the thread segment of measured workpiece, and compress standard metering pin with measurer piece, adjust bracing or strutting arrangement simultaneously and make measurer piece level, and make radially gag lever post, axial limiting pole pair measurer piece carry out radial and axial spacing;
The initial indicating value of b, the position of adjusting clock gauge and dial plate, rotates measured workpiece to 60 ° ~ 90 °, then unclamps the silk thread that is fixed on metering pin tension rod end, keeps measured workpiece motionless, writes down the now indicated value of clock gauge;
C, the axial location of adjustment standard metering pin in thread groove, so that the test section of standard metering pin is in thread groove, with the position of adjusting measurer piece, so that measurer piece level also can compress standard metering pin, again silk thread is fixed on metering pin tie rod, rotates measured workpiece to 60 ° ~ 90 °, then unclamp the silk thread that is fixed on metering pin tension rod end, keep measured workpiece motionless, write down the now indicated value of clock gauge;
D, repeating step c, until measured workpiece rotates one week, the maximum difference value of clock gauge in this process, is the coaxiality error of screw thread.
In a step, between described radially gag lever post, axial limiting bar and measurer piece, leave certain gap, so that measurer piece is difficult for perk when mobile.
In c step, silk thread is fixed on to position on metering pin tie rod should be with measured workpiece on same level height, and must make silk thread be in relaxed state.
The present invention puts into standard metering pin the thread groove of measured workpiece (for example coupling bolt) when measuring, and contact point is just on middle line.When measurer piece is pressed on the metering pin of putting into thread groove, the lower surface of measurer piece contacts with the top of standard metering pin.Because of the line of contact point and the central diameter of this thread segment parallel, so the effect of standard metering pin is equivalent to pitch diameter of thread position translation to the upper surface of measurer piece.When measured workpiece rotates one week two between top, read the maximum difference value of the clock gauge of measurer piece upper surface, just represented the coaxiality error of this thread segment.Measurer piece in the present invention has certain deadweight, can compress standard metering pin.And the standard metering pin of putting into thread groove is movable, when workpiece rotates between top, when standard metering pin moves along helix together with measurer piece, standard metering pin can regulate the contact position with thread groove automatically.The present invention is simple, convenient, accurately and reliably, is particularly suitable for the Site Detection in workshop, can effectively verify the reliability of bolt processing technic featuring.
Accompanying drawing explanation
The present invention is further detailed explanation for the embodiment providing below in conjunction with accompanying drawing.
Fig. 1 is the working state figure of external thread coaxality measuring mechanism of the present invention;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the left view of Fig. 1;
Fig. 4 is the D place enlarged drawing of Fig. 1;
Fig. 5 is measuring principle schematic diagram of the present invention.
Embodiment
As Fig. 1, 2, 3, shown in 4, a kind of external thread coaxality measuring mechanism of the present invention, comprises clock gauge 1, measurer piece 2, standard metering pin 3, stop means 5, bracing or strutting arrangement 6 and pedestal 7, described measurer piece 2 has upper surface 2-1 and lower surface 2-2, and described standard metering pin 3 is at least two, and described stop means 5 and bracing or strutting arrangement 6 are all fixed on pedestal 7, and described stop means 5 comprises radially gag lever post 5-2, axial limiting bar 5-3, metering pin tie rod 5-4 and silk thread 5-1, described radially gag lever post 5-2, axial limiting bar 5-3 lays respectively at by an end face side and side of measurer piece 2, described metering pin tie rod 5-4 is positioned at by the other end of measurer piece 2, one end of described silk thread 5-1 is connected on standard metering pin 3, the other end is connected on metering pin tie rod 5-4, during detection, the gauge head of described clock gauge 1 contacts with the upper surface 2-1 of measurer piece 2, and described standard metering pin 3 contacts with a place of the lower surface 2-2 of measurer piece 2, and described bracing or strutting arrangement 6 offsets with another place of the lower surface 2-2 of measurer piece 2.
As shown in Fig. 3,5, upper surface 2-1 and the lower surface 2-2 of described measurer piece 2 are parallel to each other, to reduce to detect error.
As shown in Figure 3, described bracing or strutting arrangement 6 comprises spherical head 6-1 and the threaded bar 6-2 of portion.When detecting, can guarantee that like this bracing or strutting arrangement and the lower surface of measurer piece are that point contacts, avoid measurer piece generation perk phenomenon, length is adjustable is in order to adapt to the detection of different size workpiece.
As shown in Figure 2,3, the radially gag lever post 5-2 of described stop means 5, axial limiting bar 5-3 include head be spherical bar 5-2-1,5-3-1 and with pole socket 5-2-2, the 5-3-2 of bar 5-2-1,5-3-1 threaded engagement.When detecting, can guarantee that like this stop means and the side of measurer piece are that point contacts, avoid measurer piece generation perk phenomenon, length is adjustable is in order to adapt to the detection of different size workpiece.
As shown in Fig. 1,2,3,4,5, standard metering pin 3 is to utilize to measure the pitch diameter of thread with two in three pins, and the diameter of standard metering pin 3 is chosen by standard with pitch.Measurer piece 2 should have enough length, so that support; Measurer piece 2 should have certain weight, can compress standard metering pin 3 when freely placing.When silk thread 5-1 guarantees to detect, standard metering pin 3 does not come off.
As shown in Fig. 1,2,3,4,5, measurement mechanism of the present invention is when measuring, in the top respective central holes that heads into measured workpiece (coupling bolt) 4 that can utilize lathe two ends.First first beating with clock gauge 1 hole, inspection center and shaft.Then two standard metering pins 3 are put into respectively to two thread grooves of the thread segment of measured workpiece 4, when one end of measurer piece 2 is pressed in the standard metering pin 3 of putting into thread groove, the lower surface 2-2 of measurer piece 2 contacts at A, B two places with standard metering pin 3, because of the line of contact point A, B parallel with the AB section pitch diameter of thread, so the effect of measurer piece 2 is equivalent to pitch diameter of thread position translation to the upper surface 2-1 of measurer piece 2.The other end of measurer piece 2 is used the push rod 5-1 jack-up of the supporting and limiting device 5 of adjusting height, radial and axial of measurer piece 2 by supporting and limiting device 5 radially, axial limiting bar 5-2,5-3 be spacing, and make the bulb of gag lever post and gauge block leave suitable gap, to adapt to moving of measurer piece 2, be unlikely to make its perk.Clock gauge 1 is moved to the upper surface 2-1 of measurer piece 2, rotate workpiece between top 4 one weeks, the maximum difference value of clock gauge 1, is the coaxiality error of this thread segment.
Detect while starting, adjust position and the dial plate data of clock gauge 1, the metering pin tie rod 5-4 that then standard metering pin 3 is linked to supporting and limiting device 5 by silk thread is upper, and makes silk thread in relaxed state.In rotating the process of measured workpiece, standard metering pin 3 can move along thread groove, and makes silk thread 5-1 tension.The workpiece that now stops operating, unclamps silk thread 5-1, writes down the indicated value of clock gauge 1.Readjust the axial location of standard metering pin 3 in thread groove, and adjusted the position of measurer piece 2, so that measurer piece 2 levels also can compress standard metering pin 3, repeated step above, until workpiece rotates one week.The maximum difference value (difference of maximum indicated value and minimum indicated value) of clock gauge in this process, is the coaxiality error parallel and droop error of reference center's line (the central diameter center line of screw thread with) of screw thread.
Unclamp the silk thread 5-1 being tightened up, the position detection again again of adjusting standard metering pin 3 and measurer piece 2 at every turn, be for guarantee standard metering pin 3 can be entirely true in the process detecting be in thread groove, and each constantly can compress standard metering pin 3 to guarantee measurer piece 2.
The angle of each turning of work piece, is determine by the specification of workpiece and the length in reserve of standard metering pin 3, and assurance at every turn during the value of reading the detection position of standard metering pin 3 be in thread groove.
Because the angle of turning of work piece is different, the moving direction of standard metering pin 3 and measurer piece 2 is also different.In order to adapt to different turning to, radially gag lever post and axial limiting bar can be made to four sides spacing, metering pin tie rod 5-4 can make and draw, the rod member of top one.
As shown in Fig. 1,2,3,4,5, a kind of external thread method for measuring coaxiality that adopts above-mentioned external thread coaxality measuring mechanism of the present invention, comprises the following steps:
A, utilize coaxial top of lathe or testing table two ends two to head in the respective central holes at measured workpiece 4 two ends, then the other one end that is connected to the silk thread 5-1 on standard metering pin 3 is fixed on metering pin tie rod 5-4, again two standard metering pins 3 are put into respectively to two thread grooves of the thread segment of measured workpiece 4, and compress standard metering pin 3 with measurer piece 2, adjust bracing or strutting arrangement 6 simultaneously and make measurer piece 2 levels, and make radially gag lever post 5-2, axial limiting bar 5-3 carry out radial and axial spacing to measurer piece 2;
The initial indicating value of b, the position of adjusting clock gauge 1 and dial plate, rotates 4 to 60 ° ~ 90 ° of measured workpieces, then unclamps the silk thread 5-1 that is fixed on metering pin tie rod 5-4 end, keeps measured workpiece 4 motionless, writes down the now indicated value of clock gauge 1;
C, the axial location of adjustment standard metering pin 3 in thread groove, so that the test section of standard metering pin 3 is in thread groove, with the position of adjusting measurer piece 2, so that measurer piece 2 levels also can compress standard metering pin 3, again silk thread 5-1 is fixed on to metering pin tie rod 5-4 upper, rotates 4 to 60 ° ~ 90 ° of measured workpieces, then unclamp the silk thread 5-1 that is fixed on metering pin tie rod 5-4 end, keep measured workpiece 4 motionless, write down the now indicated value of clock gauge 1;
D, repeating step c, until measured workpiece 4 rotates one week, the maximum difference value (difference of maximum indicated value and minimum indicated value) of clock gauge 1 in this process, is the coaxiality error parallel and droop error of reference center's line (the central diameter center line of screw thread with) of screw thread.
As shown in Figure 1, 2, 3, in a step, between described radially gag lever post 5-2, axial limiting bar 5-3 and measurer piece 2, leave certain gap, so that measurer piece 2 is difficult for perk when mobile.
In b, c step, each angle of rotating measured workpiece 4 is generally 60 ° ~ 90 °, can guarantee so to be constantly all in thread groove in the test section of the process Plays metering pin rotating, be also difficult for making the silk thread tension of connection standard metering pin and cause standard metering pin and misplace in thread groove simultaneously.
In c step, silk thread 5-1 is fixed on to position on metering pin tie rod 5-4 should be with measured workpiece 4 on same level height, and must make silk thread 5-1 be in relaxed state.
Claims (7)
1. an external thread coaxality measuring mechanism, it is characterized in that: comprise clock gauge (1), measurer piece (2), standard metering pin (3), stop means (5), bracing or strutting arrangement (6) and pedestal (7), described measurer piece (2) has upper surface (2-1) and lower surface (2-2), described standard metering pin (3) is at least two, stop means (5) and bracing or strutting arrangement (6) are all fixed on pedestal (7), described stop means (5) comprises radially gag lever post (5-2), axial limiting bar (5-3), metering pin tie rod (5-4) and silk thread (5-1), described radially gag lever post (5-2), axial limiting bar (5-3) lays respectively at by an end face side and side of measurer piece (2), described metering pin tie rod (5-4) is positioned at by the other end of measurer piece (2), one end of described silk thread (5-1) is connected on standard metering pin (3), the other end is connected on metering pin tie rod (5-4), during detection, the gauge head of described clock gauge (1) contacts with the upper surface (2-1) of measurer piece (2), described standard metering pin (3) contacts with a place of the lower surface (2-2) of measurer piece (2), described bracing or strutting arrangement (6) offsets with another place of the lower surface (2-2) of measurer piece (2).
2. external thread coaxality measuring mechanism according to claim 1, is characterized in that: upper surface (2-1) and the lower surface (2-2) of described measurer piece (2) are parallel to each other.
3. external thread coaxality measuring mechanism according to claim 1, is characterized in that: described bracing or strutting arrangement (6) comprises spherical head (6-1) and threaded bar portion (6-2).
4. external thread coaxality measuring mechanism according to claim 1, is characterized in that: the radially gag lever post (5-2) of described stop means (5), axial limiting bar (5-3) include head be spherical bar (5-2-1,5-3-1) and with the pole socket (5-2-2,5-3-2) of bar (5-2-1,5-3-1) threaded engagement.
5. adopt an external thread method for measuring coaxiality for one of claim 1 ~ 4 described external thread coaxality measuring mechanism, it is characterized in that: comprise the following steps:
A, utilize coaxial top of lathe or testing table two ends two to head in the respective central holes at measured workpiece (4) two ends, then the other one end that is connected to the silk thread (5-1) on standard metering pin (3) is fixed on metering pin tie rod (5-4), again two standard metering pins (3) are put into respectively to two thread grooves of the thread segment of measured workpiece (4), and compress standard metering pin (3) with measurer piece (2), adjust bracing or strutting arrangement (6) simultaneously and make measurer piece (2) level, and make radially gag lever post (5-2), axial limiting bar (5-3) carries out radial and axial spacing to measurer piece (2),
B, adjust the position of clock gauge (1) and the initial indicating value of dial plate, rotate measured workpiece (4) to 60 ° ~ 90 °, then unclamp the silk thread (5-1) that is fixed on metering pin tie rod (5-4) end, keep measured workpiece (4) motionless, write down the now indicated value of clock gauge (1);
C, the axial location of adjustment standard metering pin (3) in thread groove; so that the test section of standard metering pin (3) is in thread groove; with the position of adjusting measurer piece (2); so that measurer piece (2) level also can compress standard metering pin (3); again silk thread (5-1) is fixed on metering pin tie rod (5-4); rotate measured workpiece (4) to 60 ° ~ 90 °; then unclamp the silk thread (5-1) that is fixed on metering pin tie rod (5-4) end; keep measured workpiece (4) motionless, write down the now indicated value of clock gauge (1);
D, repeating step c, until measured workpiece (4) rotates one week, the maximum difference value of clock gauge in this process (1), is the coaxiality error of screw thread.
6. external thread method for measuring coaxiality according to claim 5, it is characterized in that: in a step, between described radially gag lever post (5-2), axial limiting bar (5-3) and measurer piece (2), leave certain gap, so that measurer piece (2) is difficult for perk when mobile.
7. external thread method for measuring coaxiality according to claim 5, it is characterized in that: in c step, silk thread (5-1) is fixed on to position on metering pin tie rod (5-4) should be with measured workpiece (4) on same level height, and must make silk thread (5-1) be in relaxed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686336.3A CN103615960B (en) | 2013-12-16 | 2013-12-16 | External thread coaxality measuring mechanism and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686336.3A CN103615960B (en) | 2013-12-16 | 2013-12-16 | External thread coaxality measuring mechanism and measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103615960A true CN103615960A (en) | 2014-03-05 |
| CN103615960B CN103615960B (en) | 2016-04-27 |
Family
ID=50166667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310686336.3A Active CN103615960B (en) | 2013-12-16 | 2013-12-16 | External thread coaxality measuring mechanism and measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103615960B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289148A (en) * | 2015-06-10 | 2017-01-04 | 致茂电子(苏州)有限公司 | The concentricity detection apparatus of photoelectric subassembly and detection method thereof |
| CN107084658A (en) * | 2017-03-01 | 2017-08-22 | 浙江兆丰机电股份有限公司 | The fine spiral lamination measuring method of outer round surface |
| CN110631538A (en) * | 2019-09-30 | 2019-12-31 | 中国航空工业标准件制造有限责任公司 | Measuring method for perpendicularity of end face |
| CN110906900A (en) * | 2019-11-30 | 2020-03-24 | 中国航空工业标准件制造有限责任公司 | Method for measuring polished rod run-out and end face verticality by taking pitch diameter of threads as reference |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202041165U (en) * | 2011-05-18 | 2011-11-16 | 天合富奥商用车转向器（长春）有限公司 | Special detection device for threaded rolling path coaxiality and bearing rolling path coaxiality of screw of steering device |
| CN202119378U (en) * | 2011-05-18 | 2012-01-18 | 天合富奥商用车转向器（长春）有限公司 | Steering gear nut internal thread raceway external circle coaxiality testing fixture |
| CN102749018A (en) * | 2012-07-23 | 2012-10-24 | 江苏松林汽车零部件有限公司 | Method for measuring verticality of end surface of connecting rod big end hole |
| JP2012247362A (en) * | 2011-05-30 | 2012-12-13 | Sintokogio Ltd | Cumulative lead error measuring apparatus for ball screw axis and measuring method |
| CN203100609U (en) * | 2012-12-06 | 2013-07-31 | 杭州世宝汽车方向机有限公司 | Integrated detection fixture for rack nut of recirculating ball-type steering gear |
| CN203719610U (en) * | 2013-12-16 | 2014-07-16 | 南车戚墅堰机车车辆工艺研究所有限公司 | External thread coaxiality measuring device |
-
2013
- 2013-12-16 CN CN201310686336.3A patent/CN103615960B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202041165U (en) * | 2011-05-18 | 2011-11-16 | 天合富奥商用车转向器（长春）有限公司 | Special detection device for threaded rolling path coaxiality and bearing rolling path coaxiality of screw of steering device |
| CN202119378U (en) * | 2011-05-18 | 2012-01-18 | 天合富奥商用车转向器（长春）有限公司 | Steering gear nut internal thread raceway external circle coaxiality testing fixture |
| JP2012247362A (en) * | 2011-05-30 | 2012-12-13 | Sintokogio Ltd | Cumulative lead error measuring apparatus for ball screw axis and measuring method |
| CN102749018A (en) * | 2012-07-23 | 2012-10-24 | 江苏松林汽车零部件有限公司 | Method for measuring verticality of end surface of connecting rod big end hole |
| CN203100609U (en) * | 2012-12-06 | 2013-07-31 | 杭州世宝汽车方向机有限公司 | Integrated detection fixture for rack nut of recirculating ball-type steering gear |
| CN203719610U (en) * | 2013-12-16 | 2014-07-16 | 南车戚墅堰机车车辆工艺研究所有限公司 | External thread coaxiality measuring device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289148A (en) * | 2015-06-10 | 2017-01-04 | 致茂电子(苏州)有限公司 | The concentricity detection apparatus of photoelectric subassembly and detection method thereof |
| CN107084658A (en) * | 2017-03-01 | 2017-08-22 | 浙江兆丰机电股份有限公司 | The fine spiral lamination measuring method of outer round surface |
| CN110631538A (en) * | 2019-09-30 | 2019-12-31 | 中国航空工业标准件制造有限责任公司 | Measuring method for perpendicularity of end face |
| CN110906900A (en) * | 2019-11-30 | 2020-03-24 | 中国航空工业标准件制造有限责任公司 | Method for measuring polished rod run-out and end face verticality by taking pitch diameter of threads as reference |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103615960B (en) | 2016-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104019728B (en) | A kind of connecting rod big aperture depth of parallelism and the comprehensive check tool of centre-to-centre spacing | |
| CN103615960B (en) | External thread coaxality measuring mechanism and measuring method | |
| CN203719610U (en) | External thread coaxiality measuring device | |
| CN204388760U (en) | Detect the comprehensive check tool of thrust surface Distance geometry verticality | |
| CN201434660Y (en) | Detection device for detecting perpendicularity of axis and runout of end surface of hole | |
| CN201764938U (en) | Tool for detecting screw perpendicularity | |
| CN202074906U (en) | Measuring device for measuring large end of taper hole | |
| CN102967246A (en) | Inner cone obliquity steel ball measuring gauge and measuring method thereof | |
| CN203364743U (en) | Rocker tool applied to rolling mill bottom plate and arch verticality inspection | |
| CN205438018U (en) | Gear ratio is to detector | |
| CN110006314A (en) | The wall thickness and wall thickness difference measurements measurer and measurement method of bicone arbitrary cross section | |
| CN207936891U (en) | A kind of instrument for measuring pitch diameter of internal thread | |
| CN203908473U (en) | Comprehensive gauge of parallel degree and center distance of large and small holes of connecting rod | |
| CN105333794A (en) | Bottom diameter testing fixture of groove in bearing and using method thereof | |
| CN110823066B (en) | Inner cavity diameter detection device and method | |
| CN202947665U (en) | Roll neck blind hole symmetry measurement instrument | |
| CN202676115U (en) | Tool for measuring verticality of connecting rod big end hole axis and plane | |
| CN205002694U (en) | Detection apparatus for bevel gear tooth runout | |
| CN210981108U (en) | Internal spline tooth top circle diameter inspection fixture | |
| CN102003931B (en) | Comprehensive detection method and device of tool tapered handle (7:24) | |
| CN209541621U (en) | The wall thickness and wall thickness difference measurements measurer of bicone arbitrary cross section | |
| CN207635984U (en) | A kind of shift of transmission slide track component comprehensive detection device | |
| CN207280349U (en) | A kind of cubing of card grinding gauge | |
| CN206772186U (en) | A kind of lever meter measurement apparatus of turbine blade size | |
| CN206291835U (en) | Circularity inspection jig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee after: CRRC QISHUYAN INSTITUTE CO., LTD. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee before: Nanche Qisuyan Engine and Vehicle Technics Institute Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 213011 Wuyi Road, Jiangsu, Changzhou, No. 258 Patentee after: CRRC QISHUYAN INSTITUTE CO., LTD. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee before: CRRC QISHUYAN INSTITUTE CO., LTD. |
|
| CP02 | Change in the address of a patent holder |