CN115958550A - Three-jaw positioning device and mounting method thereof - Google Patents
Three-jaw positioning device and mounting method thereof Download PDFInfo
- Publication number
- CN115958550A CN115958550A CN202211627949.5A CN202211627949A CN115958550A CN 115958550 A CN115958550 A CN 115958550A CN 202211627949 A CN202211627949 A CN 202211627949A CN 115958550 A CN115958550 A CN 115958550A
- Authority
- CN
- China
- Prior art keywords
- jaw
- turbine
- positioners
- worm
- eddy current
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
A three-jaw positioning device and a mounting method thereof. In particular to a three-jaw positioning device of a main transmission of an eddy current testing system for testing the quality of aluminum and aluminum alloy thin-walled tubes and an installation method thereof. In order to solve the problems that the concentricity of a main transmission device for eddy current testing is not easy to adjust and the accuracy is not high, and the positioning method of the main transmission device for eddy current testing cannot meet the existing precision requirement, a plurality of groups of three-jaw positioners and an eddy current testing probe frame are all arranged in a shell, the plurality of groups of three-jaw positioners are arranged in parallel from front to back, the eddy current testing probe frame is arranged between a second group of three-jaw positioners and a third group of three-jaw positioners, and the probe central line of the eddy current testing probe frame and the central axis of the plurality of groups of three-jaw positioners are all coincided. The installation method comprises the steps of adjusting each group of three-jaw positioners by using a center position adjusting tool; installing the three-jaw positioner; mounting the mounted three-jaw positioning device on the debugged lifting platform; integrally debugging the three-jaw positioning device; belongs to the field of eddy current detection.
Description
Technical Field
The invention relates to a three-jaw positioning device, in particular to a three-jaw positioning device for main transmission of an eddy current testing system for testing the quality of aluminum and aluminum alloy thin-walled pipes and an installation method thereof, belonging to the field of eddy current testing.
Background
The aluminum and aluminum alloy thin-wall pipe is widely applied to the field of military aerospace, along with the progress of the development of science and technology of the times, the requirement of a user on the accuracy of the outline dimension of the aluminum and aluminum alloy thin-wall pipe is higher and higher, the existing accuracy requirement cannot be met by the original positioning method for detecting the main transmission of the system, the operation steps of the original method are complex and not accurate enough, the main transmission positioning is a key link in the eddy current detection system for the aluminum and aluminum alloy thin-wall pipe, the adjustment of the mechanical concentricity of the main transmission of the eddy current detection system is mainly related to the adjustment of the mechanical concentricity of the main transmission of the system, the accuracy of the external dimension of the pipe after the detection is finished, and the accuracy of the eddy current probe for collecting pipe signals in the eddy current detection process, so the concentricity is important for eddy current detection, the guarantee of the mechanical concentricity is the accuracy of the eddy current detection result of the aluminum and aluminum alloy thin-wall pipe and the reduction of the mechanical scratches on the external surface, but the concentricity in the main transmission device of the existing eddy current detection system can only be adjusted by the up-down movement of the eddy current probe, and the adjustment process is troublesome and cannot ensure the accuracy of the concentricity.
Disclosure of Invention
The invention provides a three-jaw positioning device and an installation method thereof, aiming at solving the problems that the concentricity of a vortex detection main transmission device is difficult to adjust and the accuracy is low, and the positioning method of the vortex detection main transmission device can not meet the existing precision requirement.
The technical scheme of the invention is as follows:
a three-jaw positioning device comprises a shell, a vortex detection probe frame and a plurality of groups of three-jaw positioners, wherein the plurality of groups of three-jaw positioners and the vortex detection probe frame are all arranged in the shell, the plurality of groups of three-jaw positioners are arranged in parallel from front to back, the vortex detection probe frame is arranged between a second group of three-jaw positioners and a third group of three-jaw positioners, the probe central line of the vortex detection probe frame and the central axes of the plurality of groups of three-jaw positioners are all overlapped, each group of three-jaw positioners comprises a bottom plate, a turbine, a worm, a turbine retainer ring, a plurality of jaw wheels, a plurality of adjusting blocks and a plurality of eccentric shafts, the bottom plate is a rectangular plate body, the turbine and the worm are all arranged on the upper surface of the bottom plate, the turbine all installs the central point at the bottom plate upper surface and puts, the axis of turbine all sets up with the last surface vertical of bottom plate, the worm all installs the one side at the turbine, the external screw thread of worm all sets up with the external screw thread meshing of turbine, the length direction of worm all is unanimous with the width direction of bottom plate, the equal fixed mounting of turbine retaining ring is on the bottom plate, and contact with the inner circle of turbine, a plurality of regulating blocks are all installed to the equal annular on the upper surface of turbine, all process on the upper surface of every regulating block has the third hole, every regulating block all rotates with the turbine to be connected, every eccentric shaft is all installed in every third hole, the link of every regulating block all rotates with the link of every dog wheel to be connected, every dog wheel all rotates with the turbine retaining ring to be connected.
A mounting method of a three-jaw positioning device comprises the following steps:
firstly, adjusting the central position of a group of three-jaw positioners, installing the tool for adjusting the central position in each group of three-jaw positioners, manually rotating a worm 3, enabling the worm 3 to drive a turbine 2 to rotate through the threaded meshing of the worm 3 and the turbine 2, enabling the turbine 2 to rotate to drive three adjusting blocks 5 arranged on the turbine 2 to rotate, enabling each adjusting block 5 to drive each link arm 4-2 connected with the adjusting block to rotate, enabling each link arm 4-2 to drive each jaw wheel body 4-1 arranged on the link arm to rotate, enabling the three jaw wheels to simultaneously rotate towards a central point until the three jaw wheels all rotate to the central position, then taking out the tool for adjusting the central position, and sequentially adjusting the central positions of other three-jaw positioners;
step two, after the three groups of three-jaw positioners are respectively debugged, firstly, installing an eddy current detection probe frame A in the shell 10, sequentially installing the three groups of three-jaw positioners in parallel in the shell 10 by taking a probe center line in the eddy current detection probe frame A as a reference line, installing one group of three-jaw positioners on one side of the eddy current detection probe frame A, installing two groups of three-jaw positioners on the other side of the eddy current detection probe frame A, and overlapping central axes of the three groups of three-jaw positioners and a probe center line of the eddy current detection probe frame A;
step three, mounting the mounted three-jaw positioning device on the debugged lifting platform;
and step four, integrally debugging the three-jaw positioning device installed in the step three by referring to a grinding rod for the precise grating, and thus completing the installation of the three-jaw positioning device.
Compared with the prior art, the invention has the following effects:
this three-jaw positioner includes the multiunit three-jaw locator, and every three-jaw locator of group utilizes turbine and worm to adjust simultaneously by the three-jaw when debugging central point puts for the multiunit three-jaw locator has increased the concentricity after the debugging by a wide margin, and the debugging process is simple and convenient, has increased the degree of accuracy that detects, has practiced thrift the loss, and the jack catch wheel of every three-jaw locator of group is ring shape, when carrying out the vortex to aluminium and aluminum alloy thin wall tubular product and examining time measuring, with tubular product is rolling friction, can alleviate the friction to detecting tubular product, has avoided producing serious scratch to tubular product surface.
When the device is used for positioning, firstly, the central position of each group of three-jaw positioners is debugged in sequence, after debugging, a plurality of groups of three-jaw positioners are arranged in the shell in sequence, the vortex detection probe frame is arranged between the first group of three-jaw positioners and the second group of three-jaw positioners, and the central position of the plurality of groups of three-jaw positioners is debugged by taking the central line of the probe in the vortex detection probe frame as a reference line.
Drawings
Fig. 1 is a schematic view of the present three-jaw positioning device.
FIG. 2 is a front view of the three-jaw positioner, with a cross-sectional view of the adjustment block 5 taken at 9;
FIG. 3 is a top view of the three-jaw positioner;
FIG. 4 is a schematic view of the overall position of the eddy current inspection system;
Detailed Description
The first embodiment is as follows: the embodiment is described by combining fig. 1-4, and the three-jaw positioning device of the embodiment comprises a shell 10, an eddy current detection probe frame a and a plurality of groups of three-jaw positioners, wherein the shell 10 is a rectangular shell with an opening on one side, the shell 10 is used for placing the three-jaw positioning device, the number of the plurality of groups of three-jaw positioners is three, the three groups of three-jaw positioners and the eddy current detection probe frame a are all installed in the shell 10, the three groups of three-jaw positioners are arranged in parallel from front to back, and the eddy current detection probe frame a is installed between the second group of three-jaw positioners and the third group of three-jaw positioners. Each group of three-jaw positioner comprises a bottom plate 1, a turbine 2, a worm 3, a turbine retainer ring 7, a gland 9, a plurality of jaw wheels 4, a plurality of adjusting blocks 5, a plurality of shafts 8 and a plurality of eccentric shafts 11, wherein the bottom plate 1 is a rectangular plate body, the bottom plate 1 is used for uniformly installing the turbine 2 and the worm 3, the turbine 2 and the worm 3 are all installed on the upper surface of the bottom plate 1, the turbine 2 is all installed at the central position of the upper surface of the bottom plate 1, the central axis of the turbine 2 is perpendicular to the upper surface of the bottom plate 1, three first holes are annularly processed on the upper surface of the turbine 2, the worm 3 is all installed on one side of the turbine 2, the external threads of the worm 3 are all meshed with the external threads of the turbine 2, the turbine 2 and the worm 3 are utilized to control the three-jaw positioner, the accuracy of the turbine 2 and the worm 3 are compact and stable, the use is convenient, the three-jaw positioner can be high, the length direction of the worm 3 is all consistent with the width direction of the bottom plate 1, the worm retainer ring 7 is conveniently matched with the turbine retainer ring 1, and contacts with the inner ring of the turbine 2, the turbine retainer ring 7 is the same as the position for fixing the turbine 2, three second holes are processed on the upper surface of the turbine retainer ring 7, a plurality of adjusting blocks 5 are annularly installed on the upper surface of the turbine 2, a first through hole and a third hole are processed on the upper surface of each adjusting block 5 in parallel, each eccentric shaft 11 is installed in each third hole, each adjusting block 5 is rotatably connected with the turbine 2 through a shaft 8, the shaft 8 penetrates through a first through hole on the outermost side of each adjusting block 5 and is fixed in a first hole of the turbine 2, the connecting end of each adjusting block 5 is rotatably connected with the connecting end of each jaw wheel 4 through the shaft 8, and each jaw wheel 4 is rotatably connected with the turbine retainer ring 7 through the shaft 8. The quantity of the jaw wheels 4 and the adjusting blocks 5 on each group of three-jaw positioner is 3, a gland 9 is installed in each adjusting block 5, and after the pipe is subjected to installation reference positioning, each gland 9 is used for fixing the position of each jaw wheel 4, so that the jaw wheels are kept immovable, and the influence on the detection result is prevented. The three-jaw positioning method has the advantages of high positioning accuracy and high accuracy. The invention adopts the three groups of three-jaw positioners to be matched with the eddy current detection probe frame, greatly reduces the wear rate of the probe guide nozzle of the eddy current detection probe frame, prolongs the service life of the guide nozzle, and ensures that the pipe and the probe guide nozzle have good concentricity because the two groups of three-jaw positioners and the one group of three-jaw positioners are respectively arranged in front of and behind the probe guide nozzle, thereby reducing the wear of the pipe to the probe guide nozzle.
The second embodiment is as follows: the embodiment is described with reference to fig. 2 and 3, each set of three-jaw positioner of the embodiment further includes two worm fixing blocks 6, each worm fixing block 6 is processed with a second through hole, each worm fixing block 6 is fixedly mounted on the upper surface of the base plate 1, the central axis of each second through hole is parallel to the upper surface of the base plate 1, the two worm fixing blocks 6 are symmetrically arranged with respect to the central axis of the base plate 1 in the length direction, one end of each worm 3 is mounted in the second through hole of one of the worm fixing blocks 6, and the other end of each worm 3 passes through the second through hole of the other worm fixing block 6 and extends out of the other worm fixing block 6. The rest is the same as the first embodiment.
The third concrete implementation mode: the embodiment is described with reference to fig. 2 and 3, and according to the three-jaw positioning device of the embodiment, each jaw wheel 4 comprises a jaw wheel body 4-1 and a link arm 4-2, each jaw wheel body 4-1 is in a circular ring shape, and the circular ring shape is in rolling friction with a pipe, so that friction on the pipe to be detected can be reduced, and the surface of the pipe is prevented from being severely scratched. The positioning end of each link arm 4-2 is machined to be cylindrical, the cylindrical positioning end of each link arm 4-2 penetrates through each annular inner ring to be fixedly connected with the corresponding jaw wheel body 4-1, an adjusting gasket is installed between each cylindrical bottom end and the corresponding jaw wheel body 4-1, friction force between each link arm 4-2 and the corresponding jaw wheel body 4-1 can be increased, two third through holes are machined in parallel in the length direction on the upper surface of each link arm 4-2, two shafts 8 are installed in each third through hole, the connecting end of each link arm 4-2 is rotatably connected with one end of each adjusting block 5 through the shaft 8, one shaft 8 penetrates through the outermost third through hole to be rotatably connected with the adjusting block 5, each link arm 4-2 is rotatably connected with the turbine retainer ring 7 through the shaft 8, and the shaft 8 penetrates through the other third through hole in each link arm 4-2 to be fixedly connected with the second hole in the turbine retainer ring 7. The others are the same as in the first or second embodiment.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 4, and the method for mounting the three-jaw positioning device of the embodiment comprises the following steps:
firstly, adjusting the central position of a group of three-jaw positioners, installing a tool for adjusting the central position in each group of three-jaw positioners, manually rotating a worm 3, enabling the worm 3 to drive a turbine 2 to rotate through the threaded meshing of the worm 3 and the turbine 2, enabling the turbine 2 to rotate to drive three adjusting blocks 5 arranged on the turbine 2 to rotate, enabling each adjusting block 5 to drive each link arm 4-2 connected with the adjusting block to rotate, enabling each link arm 4-2 to drive each jaw wheel body 4-1 arranged on the link arm to rotate, enabling the three jaw wheels to simultaneously rotate towards a central point until the three jaw wheels all rotate to the central position, then taking out the tool for adjusting the central position, and sequentially adjusting the central positions of other three-jaw positioners;
step two, after the three groups of three-jaw positioners are respectively debugged, firstly, installing an eddy current detection probe frame A in the shell 10, sequentially installing the three groups of three-jaw positioners in parallel in the shell 10 by taking a probe center line in the eddy current detection probe frame A as a reference line, installing one group of three-jaw positioners on one side of the eddy current detection probe frame A, installing two groups of three-jaw positioners on the other side of the eddy current detection probe frame A, and overlapping central axes of the three groups of three-jaw positioners and a probe center line of the eddy current detection probe frame A;
step three, mounting the mounted three-jaw positioning device on a debugged lifting platform;
and step four, integrally debugging the three-jaw positioning device installed in the step three by referring to a grinding rod for the precise grating, and thus completing the installation and positioning adjustment of the three-jaw positioning device.
Claims (6)
1. A three-jaw positioner which characterized in that: the eddy current testing device comprises a shell (10), an eddy current testing probe frame (A) and a plurality of groups of three-jaw positioners, wherein the plurality of groups of three-jaw positioners and the eddy current testing probe frame (A) are installed in the shell (10), the plurality of groups of three-jaw positioners are arranged in parallel from front to back, the eddy current testing probe frame (A) is installed between a second group of three-jaw positioners and a third group of three-jaw positioners, and the probe center line of the eddy current testing probe frame (A) and the central axes of the plurality of groups of three-jaw positioners are overlapped;
each group of three-jaw positioner comprises a bottom plate (1), a turbine (2), a worm (3), turbine check rings (7), a plurality of jaw wheels (4), a plurality of adjusting blocks (5) and a plurality of eccentric shafts (11), wherein the bottom plate (1) is a rectangular plate body, the turbine (2) and the worm (3) are arranged on the upper surface of the bottom plate (1), the turbine (2) is arranged at the central position of the upper surface of the bottom plate (1), the central axis of the turbine (2) is perpendicular to the upper surface of the bottom plate (1), the worm (3) is arranged on one side of the turbine (2), the external threads of the worm (3) are meshed with the external threads of the turbine (2), the length direction of the worm (3) is consistent with the width direction of the bottom plate (1), and the turbine check rings (7) are fixedly arranged on the bottom plate (1), and contact with the inner circle of turbine (2), all install a plurality of regulating blocks (5) annularly on the upper surface of turbine (2), all process on the upper surface of every regulating block (5) and have the third hole, every regulating block (5) all rotates with turbine (2) to be connected, every eccentric shaft (11) all installs at every third downthehole, the link of every regulating block (5) all rotates with the link of every jack catch wheel (4) to be connected, every jack catch wheel (4) all rotates with turbine retaining ring (7) to be connected.
2. A three-jaw positioning device according to claim 1, wherein: the number of the multiple groups of three-jaw positioners is three.
3. A three-jaw positioning device according to claim 2, wherein: every three-jaw locator of group still includes two worm fixed block (6), all processed the second through-hole on every worm fixed block (6), every worm fixed block (6) equal fixed mounting on the upper surface of bottom plate (1), the axis of every second through-hole all is parallel with the upper surface of bottom plate (1), and two worm fixed block (6) all set up about bottom plate (1) length direction's axis symmetry, the second through-hole in one of them worm fixed block (6) is all installed to the one end of every worm (3), the other end of every worm (3) all passes the second through-hole of another worm fixed block (6), and stretch out outside another worm fixed block (6).
4. A three-jaw positioning device according to claim 1, wherein: each jaw wheel (4) comprises a jaw wheel body (4-1) and a link arm (4-2), each jaw wheel body (4-1) is circular, the positioning end of each link arm (4-2) penetrates through each circular inner ring to be fixedly connected with the corresponding jaw wheel body (4-1), the connecting end of each link arm (4-2) is rotatably connected with one end of each adjusting block (5), and each link arm (4-2) is rotatably connected with the turbine retainer ring (7).
5. A three-jaw positioning device according to claim 4, wherein: the number of the jaw wheels (4) and the adjusting blocks (5) on each group of three-jaw positioner is 3.
6. A mounting method of a three-jaw positioning device is characterized in that: it comprises the following steps:
firstly, adjusting the central position of a group of three-jaw positioners, installing a tool for adjusting the central position in each group of three-jaw positioners, manually rotating a worm (3), enabling the worm (3) to drive a turbine (2) to rotate through the threaded meshing of the worm (3) and the turbine (2), enabling the turbine (2) to rotate to drive three adjusting blocks (5) arranged on the turbine (2) to rotate, enabling each adjusting block (5) to drive each link arm (4-2) connected with the adjusting block to rotate, enabling each link arm (4-2) to drive each jaw wheel body (4-1) arranged on the link arm to rotate, enabling the three jaw wheels to simultaneously rotate towards a central point until the three jaw wheels all rotate to the central position, taking out the tool for adjusting the central position, and sequentially adjusting the central positions of other three-jaw positioners;
secondly, after the three groups of three-jaw positioners are respectively debugged, firstly, installing an eddy current detection probe frame (A) in the shell (10), sequentially installing the three groups of three-jaw positioners in parallel in the shell (10) by taking a probe central line in the eddy current detection probe frame (A) as a datum line, installing one group of three-jaw positioners on one side of the eddy current detection probe frame (A), installing two groups of three-jaw positioners on the other side of the eddy current detection probe frame (A), and superposing central axes of the three groups of three-jaw positioners and the probe central line of the eddy current detection probe frame (A);
step three, mounting the mounted three-jaw positioning device on a debugged lifting platform;
and step four, integrally debugging the three-jaw positioning device installed in the step three by referring to a grinding rod for the precise grating, and thus completing the installation of the three-jaw positioning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211627949.5A CN115958550A (en) | 2022-12-16 | 2022-12-16 | Three-jaw positioning device and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211627949.5A CN115958550A (en) | 2022-12-16 | 2022-12-16 | Three-jaw positioning device and mounting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115958550A true CN115958550A (en) | 2023-04-14 |
Family
ID=87352183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211627949.5A Pending CN115958550A (en) | 2022-12-16 | 2022-12-16 | Three-jaw positioning device and mounting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115958550A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004226195A (en) * | 2003-01-22 | 2004-08-12 | Nippon Chutetsukan Kk | Eddy current flaw detection method and apparatus |
| CN103105187A (en) * | 2011-11-11 | 2013-05-15 | 上海宝信软件股份有限公司 | Three-claw centering device |
| CN203798774U (en) * | 2014-04-23 | 2014-08-27 | 无锡莱林检测机械有限公司 | Adjustable three-wheel centering device for steel tube eddy current inspection |
| CN210572238U (en) * | 2019-09-20 | 2020-05-19 | 苏州瑞昭丰自动化控制有限公司 | Pipe flaw detection device |
| CN210690476U (en) * | 2019-09-20 | 2020-06-05 | 苏州瑞昭丰自动化控制有限公司 | Eddy current flaw detection device |
| CN213121720U (en) * | 2020-06-08 | 2021-05-04 | 江阴兴澄合金材料有限公司 | Three-roller centering device of rotary eddy current flaw detection host |
-
2022
- 2022-12-16 CN CN202211627949.5A patent/CN115958550A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004226195A (en) * | 2003-01-22 | 2004-08-12 | Nippon Chutetsukan Kk | Eddy current flaw detection method and apparatus |
| CN103105187A (en) * | 2011-11-11 | 2013-05-15 | 上海宝信软件股份有限公司 | Three-claw centering device |
| CN203798774U (en) * | 2014-04-23 | 2014-08-27 | 无锡莱林检测机械有限公司 | Adjustable three-wheel centering device for steel tube eddy current inspection |
| CN210572238U (en) * | 2019-09-20 | 2020-05-19 | 苏州瑞昭丰自动化控制有限公司 | Pipe flaw detection device |
| CN210690476U (en) * | 2019-09-20 | 2020-06-05 | 苏州瑞昭丰自动化控制有限公司 | Eddy current flaw detection device |
| CN213121720U (en) * | 2020-06-08 | 2021-05-04 | 江阴兴澄合金材料有限公司 | Three-roller centering device of rotary eddy current flaw detection host |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111571272B (en) | Accurate alignment method for rotary parts | |
| CN109540032B (en) | Non-contact laser detection revolution body section profile morphology error device | |
| CN105928479B (en) | A kind of cartridge type part outer diameter on-line measuring device in spinning process | |
| CN112815866A (en) | Internal thread detector based on laser profile scanning and detection method thereof | |
| CN110145999A (en) | A kind of method of the taper of circular conical surface on inspection center axis | |
| CN109623648A (en) | The clamping tooling and processing method of axial workpiece | |
| CN209877932U (en) | Nuclear reaction column assembly installation and measurement tool | |
| CN115958550A (en) | Three-jaw positioning device and mounting method thereof | |
| CN211601876U (en) | Micro-aperture measuring device | |
| CN109631720B (en) | Measuring method of annular cylinder | |
| CN103424058A (en) | Bearing sleeve inner hole measuring device | |
| CN112344885A (en) | Step shaft flatness detection device and flatness detection method thereof | |
| CN111380483A (en) | Internal combustion engine camshaft outline detector and detection method | |
| CN217738073U (en) | Multifunctional measuring tool | |
| CN113245904B (en) | Coaxiality adjusting tool and method for automatic quick-change fixture tail end tool | |
| CN211085044U (en) | Pipe wall structure internal and external diameter measuring device | |
| CN213828208U (en) | Five machining center slant 45 rotation axis test fixture | |
| CN111780649B (en) | Taper measuring tool | |
| CN210464278U (en) | Detection apparatus for detect each shaft section surface circle in bent axle and beat | |
| CN203385379U (en) | Bearing sleeve inner hole measuring apparatus | |
| CN113804137A (en) | Quick nondestructive test device for annular forging casting | |
| CN217620136U (en) | Steam generator pipe orifice centering device | |
| CN215177632U (en) | Device for measuring step groove distance and groove width in hole | |
| CN219103921U (en) | Bearing ring roundness detection equipment | |
| CN219869606U (en) | Bearing quality detects internal diameter measuring equipment |
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 |