CN106679551B - Concentricity measuring method and tool for sealing sleeve and intermediary case - Google Patents
Concentricity measuring method and tool for sealing sleeve and intermediary case Download PDFInfo
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- CN106679551B CN106679551B CN201710048655.XA CN201710048655A CN106679551B CN 106679551 B CN106679551 B CN 106679551B CN 201710048655 A CN201710048655 A CN 201710048655A CN 106679551 B CN106679551 B CN 106679551B
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- 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
- G01B5/003—Measuring of motor parts
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- 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
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a method and a tool for measuring concentricity of a sealing sleeve and an intermediary casing, and relates to the technical field of engine maintenance. The concentricity measuring method of the sealing sleeve and the intermediate casing comprises the following steps: the method comprises the following steps that firstly, a zero setting mechanism is used for setting zero of a measuring meter on a measuring mechanism; and step two, mounting the positioning mechanism on the intermediary case, then mounting the measuring mechanism on the positioning mechanism, enabling the gauge outfit of the measuring gauge to be in contact with the measuring surface of the sealing sleeve, and rotating the inner measuring ring on the measuring mechanism to drive the measuring gauge to rotate. The concentricity measuring tool for the sealing sleeve and the intermediary casing is used for completing the measuring method. The invention has the advantages that: by using the concentricity measuring method of the sealing sleeve and the intermediary case and the measuring swimsuit, the bounce value of the sealing sleeve on the No. 2 fulcrum of the engine can be measured on the installation site, one-time success can be achieved, the measuring time can be shortened by 90 percent compared with the prior art, the measuring process has high precision and convenient operation, and the measuring time is shortened.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a method and a tool for measuring concentricity of a sealing sleeve and an intermediary casing.
Background
The sealing sleeve on the second fulcrum of an engine with a large bypass ratio is installed at the front end of central transmission and is limited by the space of a central transmission driven gear, the installation edge is cut to about 1/3, 4 air guide pipes are in plug-in connection with an air guide port of an intermediary case on the sealing sleeve, the air guide pipes and the air guide port of the intermediary case are large in non-coaxiality, and two factors are combined, so that after the sealing sleeve on the second fulcrum is installed, a sealing ring at the part matched with a rotor labyrinth on the sealing sleeve is often large in deformation, and the phenomena of rotor rotation clamping stagnation and inflexibility after the engine is assembled are caused. The concentricity measurement under the installation state of the existing sealing sleeve only depends on the sealing sleeve on the fake second fulcrum, the intermediary casing and the sealing sleeve component are measured by machine tool equipment, so that not only is much manpower and material resources consumed and the efficiency low, but also more importantly, even if the measurement and the adjustment are qualified, when the actual assembly is carried out again after the measurement is carried out, the actual assembly is difficult to reach the state during the measurement due to the fact that the thin wall and the installation edge of the sealing sleeve are incomplete, the air guide pipe and the intermediary are installed and have stress and other factors.
Disclosure of Invention
The invention aims to provide a method and a tool for measuring concentricity of a sealing sleeve and an intermediary case, so as to solve or at least reduce at least one problem in the background technology.
The technical scheme adopted by the invention is as follows: a method for measuring concentricity of a sealing sleeve and an intermediate casing is provided, which comprises the following steps:
firstly, positioning and matching a positioning cylindrical surface of a zero setting mechanism with a measuring outer ring of a measuring mechanism through a radial spigot, and adjusting a measuring meter on a measuring inner ring of the measuring mechanism to enable a meter head of the measuring meter to be in contact with a zero setting surface of the zero setting mechanism; rotating a measuring inner ring of a measuring mechanism, zeroing a surface pointer of the measuring meter, and removing the zeroing mechanism;
step two, fixedly connecting a positioning outer ring of a positioning mechanism with an intermediate casing through radial spigot positioning fit, then fixedly connecting a measuring outer ring of the measuring mechanism in the step one with a positioning inner ring of the positioning mechanism through radial spigot positioning fit, and adjusting the measuring gauge to enable a measuring gauge head to be in contact with a measured cylindrical surface of the sealing sleeve;
and thirdly, rotating the measuring inner ring of the measuring mechanism for at least one circle, rotating the measuring meter along with the measuring inner ring, and recording the numerical values of the measuring meter at different positions in the circumferential direction.
Preferably, in the first step, firstly, the measuring inner ring of the measuring mechanism is rotated for a circle by the rotating handle, whether the pointer of the measuring meter returns to the initial position is checked, if the pointer returns to the initial position, the measuring inner ring is continuously rotated, measuring 8 points are uniformly distributed in the circumferential direction, and the jitter value of the measuring meter at the position of the 8 points is adjusted to be within 0.02 mm; if the pointer of the measuring meter can not return to the initial position, the pointer of the measuring meter can return to the initial position after the pointer of the measuring meter is continuously rotated and debugged to rotate for one circle.
Preferably, in the third step, the measuring inner ring on the measuring mechanism rotates for a circle, 8 points are uniformly distributed in the circumferential direction of the measuring inner ring to record the numerical value of the measuring meter, and then the radial run-out value is calculated.
Preferably, in the third step, the measuring inner ring on the measuring mechanism is rotated for multiple circles, 8 points are uniformly distributed in the circumferential direction of the measuring inner ring every circle to record the value of the measuring table, then the radial run-out value is calculated, and the average value of the run-out values of every week is calculated after the measuring inner ring is rotated for multiple circles.
The invention also provides a concentricity measuring tool for the sealing sleeve and the intermediary case, which is used for the concentricity measuring method for the sealing sleeve and the intermediary case, and is characterized in that: the concentricity measuring tool for the sealing sleeve and the intermediary case comprises a positioning mechanism, a measuring mechanism, a zero setting mechanism and a measuring meter;
the positioning mechanism comprises a positioning outer ring and a positioning inner ring, the positioning outer ring is fixedly connected with the positioning inner ring through a connecting rod, and an excircle spigot of the positioning outer ring is coaxial with an inner hole of the positioning inner ring;
the measuring mechanism comprises a measuring outer ring and a measuring inner ring, the measuring outer ring is coaxial with the measuring inner ring, and the measuring inner ring can rotate relative to the measuring outer ring;
the measuring outer ring is matched with the positioning inner ring in a positioning mode through a radial spigot;
the measuring meter is arranged on the measuring inner ring, and a meter head radially extends out of the outer circle surface of the measuring inner ring;
the zero setting mechanism comprises a positioning cylindrical surface and a zero setting surface, the positioning cylindrical surface is coaxial with the zero setting surface, the positioning cylindrical surface is matched with an excircle spigot of the measuring outer ring, and the zero setting surface is used for zero setting of the measuring meter.
In the concentricity measuring tool for the sealing sleeve and the intermediate casing, preferably, a measuring flange is arranged on the end surface of the measuring outer ring, and a cutting surface is arranged on the measuring flange in the radial direction; the end face of the positioning inner ring is provided with a positioning flange, the end face of the positioning flange is provided with a positioning pin, and the excircle of the positioning pin is tangent to the cutting face.
In the concentricity measuring tool for the sealing sleeve and the intermediary casing, preferably, a plurality of unthreaded holes for connection and threaded holes for disassembly are uniformly distributed on the circumference of the measuring flange.
In the concentricity measuring tool for the sealing sleeve and the intermediary case, preferably, a gauge outfit of the measuring gauge is provided with a baffle; the measuring mechanism also comprises a gauge outfit adjusting rod, one end of the gauge outfit adjusting rod is provided with a cam, and the other end of the gauge outfit adjusting rod is provided with a knob; the gauge outfit adjusting rod is parallel to the axis of the measuring inner ring, the cam is contacted with the baffle, and the knob is arranged on the end face of the measuring flange.
The invention has the beneficial effects that: the concentricity measuring method of the sealing sleeve and the intermediary case and the measuring swimsuit can measure the jumping value of the sealing sleeve on the No. 2 fulcrum of the engine on the installation site, and can achieve one-time success, and the measuring time can be shortened by 90 percent compared with the prior art.
Drawings
FIG. 1 is a flowchart of a method for measuring concentricity of a sealing sleeve and an intermediate casing according to an embodiment of the invention.
Fig. 2 is a schematic diagram of the use of the concentricity measurement tool for the sealing sleeve and the intermediate casing according to an embodiment of the invention.
Fig. 3 is an assembled cross-sectional view of the measuring mechanism and the zeroing mechanism in the embodiment shown in fig. 2.
Fig. 4 is a schematic view of the measuring mechanism in the embodiment shown in fig. 2.
Fig. 5 is a schematic view of the positioning mechanism and the measuring mechanism in the embodiment shown in fig. 2.
The device comprises a positioning mechanism 1, a positioning outer ring 11, a positioning inner ring 12, a connecting rod 13, a measuring mechanism 2, a measuring outer ring 21, a measuring inner ring 22, a radial bearing 23, a measuring flange 24, a cutting surface 25, a gauge head adjusting rod 26, a rotating handle 27, a zero setting mechanism 3, a positioning cylindrical surface 31, a zero setting surface 32, a measuring gauge 4, a baffle 41, an intermediary case 5 and a sealing sleeve 6.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
As shown in fig. 1 to 5, in the present embodiment, the method for measuring the concentricity of the sealing sleeve and the intermediate casing includes the following steps:
firstly, positioning and matching a positioning cylindrical surface 31 of a zero setting mechanism 3 with a measurement outer ring 21 of a measurement mechanism 2 through a radial spigot, and adjusting a measurement meter 4 on a measurement inner ring of the measurement mechanism 2 to enable a meter head of the measurement meter 4 to be in contact with a zero setting surface 32 of the zero setting mechanism 3; rotating the inner measuring ring 22 of the measuring mechanism 2, zeroing the surface pointer of the measuring instrument 4, and removing the zeroing mechanism;
step two, fixedly connecting a positioning outer ring 11 of a positioning mechanism 1 with an intermediary case 5 through radial spigot positioning matching, then fixedly connecting a measuring outer ring 21 of a measuring mechanism 2 in the step one with a positioning inner ring 12 of the positioning mechanism 1 through radial spigot positioning matching, and adjusting the measuring gauge 4 to enable a measuring gauge head to be in contact with a measured cylindrical surface of a sealing sleeve 6;
and step three, rotating the measuring inner ring 22 of the measuring mechanism 2 for at least one circle, rotating the measuring meter 4 along with the measuring inner ring 22, and recording the numerical values of the measuring meter 4 at different positions in the circumferential direction.
In the first step of this embodiment, first, the measuring inner ring 22 of the measuring mechanism 2 is rotated by one circle through the rotating handle 27, whether the pointer of the measuring gauge 4 returns to the initial position is checked, if the pointer returns to the initial position, the measuring inner ring 22 is continuously rotated, measuring 8 points are uniformly distributed in the circumferential direction of the zero setting mechanism 3, and the jitter value of the measuring gauge 4 at the position of the 8 points is adjusted to be within 0.02 mm; if the pointer of the measuring meter can not return to the initial position, the pointer of the measuring meter can return to the initial position after the pointer of the measuring meter is continuously rotated and debugged to rotate for one circle.
In the third step of this embodiment, the inner measuring ring 22 on the measuring mechanism 2 rotates once, 8 points are uniformly distributed in the circumferential direction of the inner measuring ring 22 to record the value of the measuring meter, and then the radial run-out value is calculated.
It will be appreciated that the measuring structure 2 may also be arranged to rotate the inner measuring ring 22 a number of times when measuring concentricity and then average each turn. For example, in an alternative embodiment, in the third step, the measuring inner ring 22 on the measuring mechanism 2 is rotated for multiple circles, 8 points are evenly distributed in the circumferential direction of the measuring inner ring 22 every circle to record the value of the measuring table, then the radial run-out value is calculated, and the average value of the run-out values every circle is calculated after the rotation for multiple circles.
The embodiment also provides a concentricity measuring tool for the sealing sleeve and the intermediary case, which is used for the concentricity measuring method for the sealing sleeve and the intermediary case, and the concentricity measuring tool for the sealing sleeve and the intermediary case comprises a positioning mechanism 1, a measuring mechanism 2, a zero setting mechanism 3 and a measuring meter 4.
The positioning mechanism 1 comprises a positioning outer ring 11 and a positioning inner ring 12, the positioning outer ring 11 is fixedly connected with the positioning inner ring 12 through a connecting rod 13, and an excircle spigot of the positioning outer ring 11 is coaxial with an inner hole of the positioning inner ring 12; the outer circle spigot on the positioning outer ring 11 is used for being fixedly matched with the intermediate casing 5.
The measuring mechanism 2 comprises a measuring outer ring 21 and a measuring inner ring 22, the measuring outer ring 21 is sleeved on the measuring inner ring 22, the measuring outer ring 21 and the measuring inner ring 22 are coaxial, and the measuring inner ring 22 can rotate relative to the measuring outer ring 21; in this embodiment, the measuring structure 2 further includes a radial bearing 23 with a small clearance, the radial bearing 23 is disposed between the measuring outer ring 21 and the measuring inner ring 22, the measuring inner ring 22 is supported by the radial bearing 23 with the small clearance, and the measuring inner ring can ensure accurate measurement and high precision in the rotating process.
The measuring outer ring 21 is matched with the positioning inner ring 12 in a positioning way through a radial spigot;
the measuring meter 4 is arranged on the measuring inner ring 22, and the meter head radially extends out of the outer circle surface of the measuring inner ring 22;
the zero setting mechanism 3 comprises a positioning cylindrical surface 31 and a zero setting surface 32, the zero setting surface 32 is a cylindrical surface coaxial with the positioning cylindrical surface 31, the positioning cylindrical surface 31 is matched with an excircle spigot of the measuring outer ring 21, and the zero setting surface 32 is used for zero setting of the measuring meter.
The excircle rabbet of the measuring outer ring 21 matched with the positioning cylindrical surface 31 and the excircle rabbet of the measuring outer ring 21 matched with the positioning inner ring 12 are the same cylindrical surface.
In the present embodiment, the end surface of the measurement outer ring 21 is provided with a measurement flange 24, and the measurement flange 24 is provided with a cutting surface 25 in the radial direction; the end face of the positioning inner ring 12 is provided with a positioning flange, the end face of the positioning flange is provided with a positioning pin, and the excircle of the positioning pin is tangent to the cutting face 25. The method has the advantages of ensuring the assembly position of the measuring structure 2 and the positioning mechanism 1 and ensuring the uniqueness of the fixed state.
In this embodiment, a rotating handle 27 is arranged on the end face of the measuring flange 24, the measuring inner ring 22 can be rotated by the rotating handle 27, and the measuring inner ring 22 drives the measuring gauge 4 to rotate, so as to measure the circumferential inner surface of the sealing sleeve 6.
In this embodiment, a plurality of unthreaded holes for connection and threaded holes for detachment are uniformly distributed on the circumference of the measuring flange 24. The jackscrew can be used for conveniently disassembling the measuring mechanism 2 through disassembling the threaded hole, and the friction force of the spigot can be matched.
In this embodiment, the dial indicator is used as the measuring instrument 4, and a baffle 41 is arranged on the head of the measuring instrument 4; the measuring mechanism 2 further comprises a gauge head adjusting rod 26, one end of the gauge head adjusting rod 26 is provided with a cam, and the other end of the gauge head adjusting rod is provided with a knob; the gauge head adjusting rod 26 is parallel to the axis of the measuring inner ring 22, the cam is in contact with the baffle plate 41, and the knob is arranged on the end face of the measuring flange 24. The meter head adjusting rod 26 is rotated through the knob, the meter head is extended or retracted through different positions of the cam in the circumferential direction, and when the meter head is extended, the meter head is in contact with the inner surface of the sealing sleeve 6, or when the meter head is zeroed, the meter head is in contact with the zeroing surface of the zeroing mechanism.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A method for measuring concentricity of a sealing sleeve and an intermediate casing is characterized by comprising the following steps:
firstly, positioning and matching a positioning cylindrical surface (31) of a zero setting mechanism (3) with a measuring outer ring (21) of a measuring mechanism (2) through a radial spigot, and adjusting a measuring meter (4) on a measuring inner ring (22) of the measuring mechanism (2) to enable a meter head of the measuring meter (4) to be in contact with a zero setting surface (32) of the zero setting mechanism (3); rotating a measuring inner ring (22) of the measuring mechanism (2), zeroing a surface pointer of the measuring meter (4), and detaching the zeroing mechanism (3);
secondly, fixedly connecting a positioning outer ring (11) of the positioning mechanism (1) with an intermediate casing (5) through radial spigot positioning matching, then fixedly connecting a measuring outer ring (21) of the measuring mechanism (2) in the first step with a positioning inner ring (12) of the positioning mechanism (1) through radial spigot positioning matching, and adjusting the measuring gauge (4) to enable a measuring gauge head to be in contact with a measured cylindrical surface of the sealing sleeve (6);
rotating the measuring inner ring (22) of the measuring mechanism (2) for at least one circle, rotating the measuring meter (4) along with the measuring inner ring (22), and recording numerical values of the measuring meter (4) at different positions in the circumferential direction;
in the first step, firstly, the measuring inner ring (22) of the measuring mechanism (2) is rotated for a circle through the rotating handle (27), whether a pointer of the measuring meter returns to an initial position or not is checked, if the pointer returns to the initial position, the measuring inner ring (22) is continuously rotated, 8 measuring points are uniformly distributed in the circumferential direction, and the jitter value of the measuring meter (4) at the position of the 8 measuring points is adjusted to be within 0.02 mm; if the pointer of the measuring meter can not return to the initial position, the pointer of the measuring meter can return to the initial position after the pointer of the measuring meter is continuously rotated and debugged to rotate for one circle.
2. The method of claim 1, wherein the step of measuring concentricity of the seal sleeve and the intermediate case comprises: in the third step, the measuring inner ring (22) on the measuring mechanism (2) rotates for a circle, 8 points are uniformly distributed in the circumferential direction of the measuring inner ring (22) to record the numerical value of the measuring meter (4), and then the radial runout value is calculated.
3. The method of claim 1, wherein the step of measuring concentricity of the seal sleeve and the intermediate case comprises: in the third step, the measuring inner ring (22) on the measuring mechanism (2) rotates for multiple circles, 8 points are uniformly distributed in the circumferential direction of the measuring inner ring (22) every circle to record the numerical value of the measuring meter (4), then the radial run-out value is calculated, and the average value of the run-out values every week is calculated after the rotating for multiple circles.
4. A concentricity measuring tool for a sealing sleeve and an intermediary casing, which is used for the concentricity measuring method for the sealing sleeve and the intermediary casing according to any one of claims 1 to 3, and is characterized in that: the concentricity measuring tool for the sealing sleeve and the intermediary case comprises a positioning mechanism (1), a measuring mechanism (2), a zero setting mechanism (3) and a measuring meter (4);
the positioning mechanism (1) comprises a positioning outer ring (11) and a positioning inner ring (12), the positioning outer ring (11) is fixedly connected with the positioning inner ring (12) through a connecting rod (13), and an excircle spigot of the positioning outer ring (11) is coaxial with an inner hole of the positioning inner ring (12);
the measuring mechanism (2) comprises a measuring outer ring (21) and a measuring inner ring (22), the measuring outer ring (21) and the measuring inner ring (22) are coaxial, and the measuring inner ring (22) can rotate relative to the measuring outer ring (21);
the measuring outer ring (21) is matched with the positioning inner ring (12) in a positioning mode through a radial spigot;
the measuring meter (4) is arranged on the measuring inner ring (22), and a meter head radially extends out of the outer circle surface of the measuring inner ring (22);
the zero setting mechanism (3) comprises a positioning cylindrical surface (31) and a zero setting surface (32), the positioning cylindrical surface (31) is coaxial with the zero setting surface (32), the positioning cylindrical surface (31) is matched with an excircle spigot of the measuring outer ring (21), and the zero setting surface (32) is used for zero setting of the measuring meter (4).
5. The seal sleeve and intermediate case concentricity measurement tool of claim 4, wherein: a measuring flange (24) is arranged on the end face of the measuring outer ring (21), and a cutting face (25) is arranged on the measuring flange in the radial direction; the end face of the positioning inner ring (12) is provided with a positioning flange, the end face of the positioning flange is provided with a positioning pin, and the excircle of the positioning pin is tangent to the cutting face (25).
6. The seal sleeve and intermediate case concentricity measurement tool of claim 5, wherein: the measuring flange (24) is provided with a plurality of connecting unthreaded holes and dismounting threaded holes in an evenly distributed manner on the circumference.
7. The seal sleeve and intermediate case concentricity measurement tool of claim 6, wherein: a baffle (41) is arranged on the gauge head of the measuring gauge (4); the measuring mechanism (2) further comprises a gauge outfit adjusting rod (26), one end of the gauge outfit adjusting rod (26) is provided with a cam, and the other end of the gauge outfit adjusting rod is provided with a knob; the gauge outfit adjusting rod is parallel to the axis of the measuring inner ring, the cam is in contact with the baffle (41), and the knob is arranged on the end face of the measuring flange (24).
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| CN201710048655.XA CN106679551B (en) | 2017-01-23 | 2017-01-23 | Concentricity measuring method and tool for sealing sleeve and intermediary case |
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| CN201710048655.XA CN106679551B (en) | 2017-01-23 | 2017-01-23 | Concentricity measuring method and tool for sealing sleeve and intermediary case |
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| CN106679551B true CN106679551B (en) | 2020-02-04 |
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| CN107576293B (en) * | 2017-10-11 | 2020-02-07 | 中国航发南方工业有限公司 | Cantilever fulcrum bounce detection tool and detection method |
| CN113199237B (en) * | 2021-04-21 | 2022-05-17 | 中国航发贵州黎阳航空动力有限公司 | Method for assembling low-pressure turbine guider of aircraft engine and coaxiality auxiliary control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4064633A (en) * | 1976-03-10 | 1977-12-27 | Wertepny Alexander W | Gauging instrument |
| SE444986B (en) * | 1976-11-20 | 1986-05-20 | Ehrat Werner Fa | DEVICE FOR INBOARD CENTERING OF A CENTER SPINDLE INCLUDED IN THE DEVICE AND A HALL IN A FORM |
| CN200975885Y (en) * | 2006-10-31 | 2007-11-14 | 扬动股份有限公司 | Cylinder cover conduit hole coaxiality and verticality gauge |
| CN101413224B (en) * | 2008-11-25 | 2012-08-22 | 华南理工大学 | Method and device for adjusting axiality of disk milling machine |
| CN202092588U (en) * | 2011-06-08 | 2011-12-28 | 鑫耀机械制造（大连）有限公司 | Axiality measuring indicator stand |
| CN202432977U (en) * | 2011-12-08 | 2012-09-12 | 上海齐达重型装备有限公司 | Coaxiality detection tool |
| CN102889846B (en) * | 2012-09-28 | 2015-01-07 | 首都航天机械公司 | Method for measuring shape and position dimensions of product with skin-stringer structure |
| CN202853555U (en) * | 2012-09-29 | 2013-04-03 | 天津市津达执行器有限公司 | Detection apparatus for coaxiality, verticality and parallelism of shaft sleeve workpieces |
| CN103225996A (en) * | 2013-03-02 | 2013-07-31 | 陈硕 | Coaxiality measurer of mounting hole of cylinder cover fuel injector and inner circle of baseplate seam allowance |
| CN204438995U (en) * | 2015-01-14 | 2015-07-01 | 武汉格瑞拓机械有限公司 | A kind of concentricity detection tool |
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