CN109249211A - A kind of driving shaft and driven shaft centralising device for agricultural machinery - Google Patents
A kind of driving shaft and driven shaft centralising device for agricultural machinery Download PDFInfo
- Publication number
- CN109249211A CN109249211A CN201811280147.5A CN201811280147A CN109249211A CN 109249211 A CN109249211 A CN 109249211A CN 201811280147 A CN201811280147 A CN 201811280147A CN 109249211 A CN109249211 A CN 109249211A
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- China
- Prior art keywords
- driving shaft
- shaft
- driven shaft
- amesdial
- axis
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Centrifugal Separators (AREA)
Abstract
The present invention is a kind of driving shaft and driven shaft centralising device for agricultural machinery comprising driving shaft fixing piece (5), driven shaft fixing piece (3), fixed stock (4), rotation quarter butt (6) and an amesdial (7).In two shaft assignments, the axis of the fixed stock (4), the axis of rotation quarter butt (6) and amesdial probe (71) and driven shaft (1) is in the same plane.When the amesdial probe (71) and perforated pan (51) disk slidably contact, the measured value on amesdial (7) is obtained by rotating driven shaft (1), the axially inclined of two axis is determined after analysis；When the amesdial probe (71) and driving shaft (8) slidably contact, the measured value on the amesdial (7) is obtained by rotating the driven shaft (1), the radial missing of two axis is determined after analysis.Centralising device of the invention can quickly check the concentricity of driving shaft and driven shaft in transmission dynamic power machine, and at low cost, accuracy is high.
Description
Technical field
The present invention relates to agricultural machinery technological fields, and in particular, to one kind is for calibrating agricultural machinery powertrain
The centralising device of driving shaft and driven shaft concentricity in system.
Background technique
In agricultural production, to guarantee that driving equipment drives slave equipment to run well, in driving shaft and driven shaft
Heart line should install driving equipment and when slave equipment must carry out looking for in for driving shaft and driven shaft on the same line
Just.Absolute to be coaxially difficult to realize, the centre deviation of two axis mainly includes radial missing and axially inclined, i.e., two axis were both different
The heart, it is also not parallel, to eliminate deviation, generally after the shaft centre line of driven machine is fixed and leveled, carry out driving shaft and driven shaft
Centering the shaft centre line of prime mover is adjusted by measurement and analysis, it is concentric and put down to reach driving shaft and driven shaft
Row.
Nowadays, driving shaft and driven shaft centering method have laser alignment instrument calibration method and amesdial mensuration.Laser pair
Middle instrument has the advantages that accuracy is high, but price is high, is difficult to popularize in agricultural machinery, and in amesdial mensuration, not yet
Two axis radial missings and axially inclined device are calibrated simultaneously.
Summary of the invention
The object of the invention is exactly in view of the above-mentioned problems, providing a kind of for calibrating the active of agricultural machinery rotating machinery installation
The centralising device of axis and driven shaft concentricity.The driving shaft and the centralising device of driven shaft concentricity can calibrate driving shaft and from
The radial missing of moving axis and axially inclined.
The present invention solve technical problem the technical solution adopted is that:
The present invention be a kind of driving shaft and driven shaft centralising device comprising driving shaft fixing piece (5), driven shaft fixing piece (3),
Fixed stock (4), rotation quarter butt (6) and an amesdial (7).The fixed stock (4), rotation quarter butt (6) and amesdial are visited
The axis of needle (71) and the axis of driven shaft (1) are in the same plane.
The driving shaft fixing piece (5) includes the perforated pan (51) with circular hole, driving shaft upper fixing element (52) and driving shaft
Lower fixing piece (53), fixing piece (53) is bolted (2) and is fixed under the driving shaft upper fixing element (52) and driving shaft
On the driving shaft (8), the perforated pan (51) is a part of the driving shaft upper fixing element (52), when installation, disk
Perpendicular to the axis of the driving shaft (8).
The driven shaft fixing piece (3) be upper and lower two metal fixing clip hoops, the fixing hoop axial direction with it is described
Driven shaft (1) axis direction is identical, and two metal fixing clip hoops are bolted (2) and are fixed on the driven shaft (1).
The fixed stock (4) is fixed on the driven shaft with screw (42) and is fixed by connecting flange (41) of its welding
On part (3), the axis of axis and the driven shaft (1) is in the same face.
The rotation quarter butt (6) both ends are equipped with fastening sleeve (61), (63).
The fastening sleeve (61) of described rotation quarter butt (6) one end is fastened on the fixed stock by fastening bolt (62)
(4) on connection pin shaft (43), while amesdial probe (71) is fastened on the rotation quarter butt (6) separately by fastening bolt (62)
On the fastening sleeve (63) of one end.The axis of the fixed stock (4), rotation quarter butt (6) and amesdial probe (71) is same
In plane.
The rotation quarter butt (6) can be around the connection pin shaft of the fixed stock (4) by the fastening sleeve (61)
(43) it rotates.
The present invention calibrates driving shaft and driven shaft radial missing and axially inclined method and step is as follows:
Fixing piece (53) under the driving shaft upper fixing element (52) and driving shaft is bolted (2) and is fixed on institute by step 1)
It states on driving shaft (8), the perforated pan (51) is welded in the driving shaft upper fixing element (52), makes its disk perpendicular to the master
The driven shaft fixing piece (3) is bolted (2) and is fixed on the driven shaft (1), by institute by the axis of moving axis (8)
It states fixed stock (4) to be fixed on the driven shaft fixing piece (3) by the connecting flange (41) and screw (42) of its welding, most
The fastening sleeve (61) of described rotation quarter butt (6) one end is fastened on the fixed stock (4) by fastening bolt (62) afterwards
It connects on pin shaft (43), while amesdial probe (71) is fastened on rotation quarter butt (6) other end by fastening bolt (62)
Fastening sleeve (63) on, guarantee the axis of the fixed stock (4), rotation quarter butt (6) and amesdial probe (71) with it is driven
The axis of axis (1) is in the same plane；
Step 2 slidably contacts the amesdial probe (71) and perforated pan (51) disk, amesdial described in school zero (7), turns
It moves the driven shaft (1), every 90 ° of rotation records the data of amesdial, and recording rotational angle respectively is 0 °, 90 °, 180 °, 270 °
When amesdial corresponding data s1, s2, s3, s4, if s1 is equal with s3 and s2 is equal with s4, driving shaft and driven shaft incline without axial
Tiltedly, if s1 is equal with s3 and s2 and s4 is unequal, driving shaft and driven shaft axially upwardly incline in the side of 90 ° and 270 ° measurement points
Tiltedly, if s1 is unequal with s3 and s2 is equal with s4, driving shaft and driven shaft axially upwardly incline in the side of 0 ° and 180 ° measurement point
Tiltedly, if s1 and s3 is unequal and s2 and s4 is unequal, driving shaft is axially inclined with driven shaft；
Step 3) passes through data analysis, according to the standard axle line chart of adjustment axis, the height of device where adjusting driving shaft and level
Distance；
Step 4) slidably contacts the amesdial probe (71) and driving shaft (8), amesdial described in school zero (7), rotates institute
It states driven shaft (1), every 90 ° of rotation records the data of amesdial, is recorded thousand when rotational angle is 0 °, 90 °, 180 °, 270 ° respectively
Point table corresponding data a1, a2, a3, a4, if a1 is equal with a3 and a2 is equal with a4, driving shaft and driven shaft without radial missing,
If a1 is equal with a3 and a2 and a4 is unequal, driving shaft and driven shaft have radial direction partially on the direction of 90 ° and 270 ° measurement points
Difference, if a1 is unequal with a3 and a2 is equal with a4, driving shaft and driven shaft have radial direction on the direction of 0 ° and 180 ° measurement point
Deviation, if a1 and a3 is unequal and a2 and a4 is unequal, driving shaft and driven shaft have radial missing；
Step 5) is analyzed again by data, according to the standard axle line chart of adjustment axis, the height of device where adjusting driving shaft
With horizontal distance, after adjustment, reuses the driving shaft and driven shaft centralising device carries out coaxality measurement, until driving shaft
Coaxiality deviation with driven shaft is in the allowed band of standard figures.
The centralising device of driving shaft and driven shaft concentricity that above-mentioned technical proposal through the invention obtains, beneficial to effect
Fruit is:
1, the present invention can calibrate the driving shaft and the radial missing of driven shaft and axially inclined of rotating machinery installation, increase calibration
Precision reduces calibration difficulty.
2, the present invention includes rotation measuring quarter butt, so that the flexible contact measurement face of the probe of amesdial, increases calibration
Flexibility ratio increases calibration accuracy by the measurement to driving shaft external cylindrical surface different location.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of present invention calibration radial missing
Fig. 2 is the axial inclined structural schematic diagram of present invention calibration
Fig. 3 is driving shaft anchor structure schematic diagram
Fig. 4 is driven shaft fixing piece and fixed stock attachment structure schematic diagram
Fig. 5 is rotation quarter butt structural schematic diagram
Fig. 6 is rotation quarter butt, fixed stock and amesdial attachment structure schematic diagram
In figure: 1- driven shaft, 2- are bolted, 3- driven shaft fixing piece, the fixed stock of 4-, 41- connecting flange, 42- screw,
43- connection pin shaft, 5- driving shaft fixing piece, 51- perforated pan, 52- driving shaft upper fixing element, fixing piece under 53- driving shaft, 6- turn
Dynamic quarter butt, 61,63- fastening sleeve, 62- fastening bolt, 7- amesdial, 71- probe, 8- driving shaft.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.
Firstly the need of explanation, in the present invention, driving shaft fixing piece and driven shaft fixing piece are separately fixed at driving shaft
It is, to eliminate deviation, after the shaft centre line in driven shaft is fixed and leveled, to carry out two according under normal circumstances on driven shaft
The centering of axis adjusts the shaft centre line of driving shaft by measurement and analysis, concentric and put down to reach driving shaft and driven shaft
Row.Axis higher mover can also be made to benchmark in engineering, after the shaft centre line of mover driving shaft is fixed and is leveled, adjustment
The shaft centre line of driven machine driven shaft carries out the centering of driving shaft and driven shaft.The present invention be according under normal circumstances,
The shaft centre line of fixed driven shaft, adjusts the shaft centre line of driving shaft, with, this hair concentric and parallel with driven shaft that reach driving shaft
It is bright can also rigid drive shaft shaft centre line, it is concentric simultaneously to reach driving shaft and driven shaft to adjust the shaft centre line of driven shaft
In parallel.
In the present invention, the clip axial direction of driving shaft fixing piece is consistent with driving shaft axial direction, guarantees perforated pan
(51) disk is vertical with driving shaft axis.
In the present invention, the fixed stock (4) is fixed on driven shaft fixing piece by connecting flange (41) and screw (42)
On, and make the axis of the axis for fixing stock and driven shaft in the same plane.
A rotation quarter butt (6) is arranged in the present invention, and rotation quarter butt (6) turns around the connection pin shaft (43) of fixed stock
It is dynamic, connect amesdial probe (71) can flexibly slidably in driving shaft difference external cylindrical surface position and perforated pan (51) disk
Touching.
Fixed stock (4) of the present invention, the axis of rotation quarter butt (6) and amesdial probe (71) and driven shaft (1)
Axis is in the same plane.The rotation for keeping amesdial probe coaxial with driven shaft, so as to check driving shaft with it is driven
The concentricity of axis.
Suitably referring to Fig. 1 and Fig. 2, it in Fig. 1, when the amesdial probe (71) and driving shaft (8) slidably contact, connects
Touching position can be driving shaft difference external cylindrical surface position, by rotating the measurement on the driven shaft (1) and the amesdial (7)
It is worth the radial missing for determining two axis；In Fig. 2, when the amesdial probe (71) and perforated pan (51) disk slidably contact, lead to
It crosses rotation driven shaft (1) and determines the axially inclined of two axis with the measured value on amesdial (7).Steps are as follows for specific method:
Step 1) slidably contacts the amesdial probe (71) and perforated pan (51) disk, amesdial described in school zero (7), turns
It moves the driven shaft (1), every 90 ° of rotation records the data of amesdial, and recording rotational angle respectively is 0 °, 90 °, 180 °, 270 °
When amesdial corresponding data s1, s2, s3, s4, if s1 is equal with s3 and s2 is equal with s4, driving shaft and driven shaft incline without axial
Tiltedly, if s1 is equal with s3 and s2 and s4 is unequal, driving shaft and driven shaft axially upwardly incline in the side of 90 ° and 270 ° measurement points
Tiltedly, if s1 is unequal with s3 and s2 is equal with s4, driving shaft and driven shaft axially upwardly incline in the side of 0 ° and 180 ° measurement point
Tiltedly, if s1 and s3 is unequal and s2 and s4 is unequal, driving shaft is axially inclined with driven shaft, is analyzed by data, according to tune
The standard axle line chart of bearing, the height and horizontal distance of device where adjusting driving shaft, device pedestal where short transverse is adjusted
On accurate adjustment bolt, horizontal direction adjust it is threaded left and right top code；
Step 2 slidably contacts the amesdial probe (71) and driving shaft (8), amesdial described in school zero (7), rotates institute
It states driven shaft (1), every 90 ° of rotation records the data of amesdial, is recorded thousand when rotational angle is 0 °, 90 °, 180 °, 270 ° respectively
Point table corresponding data a1, a2, a3, a4, if a1 is equal with a3 and a2 is equal with a4, driving shaft and driven shaft without radial missing,
If a1 is equal with a3 and a2 and a4 is unequal, driving shaft and driven shaft have radial direction partially on the direction of 90 ° and 270 ° measurement points
Difference, if a1 is unequal with a3 and a2 is equal with a4, driving shaft and driven shaft have radial direction on the direction of 0 ° and 180 ° measurement point
Deviation, if a1 and a3 is unequal and a2 and a4 is unequal, driving shaft and driven shaft have radial missing；
Step 3) is analyzed again by data, according to the standard axle line chart of adjustment axis, the height of device where adjusting driving shaft
With horizontal distance, accurate adjustment bolt on short transverse adjustment base, horizontal direction adjusts threaded left and right top code, after adjustment,
It reuses the driving shaft and driven shaft centralising device carries out coaxality measurement, until the concentricity of driving shaft and driven shaft is inclined
Difference is in the allowed band of standard figures.
Through the above steps, the driving shaft of rotating machinery installation and the concentricity of driven shaft can accurately be checked.
Centralising device of the invention, using high-precision connecting flange and perforated pan and amesdial, easy to operate and mistake
Difference is small, can satisfy motor group completely, the power drive systems such as testing stand want the inspection of the concentricity of driving shaft and driven shaft
It asks.
Claims (8)
1. a kind of driving shaft and driven shaft centralising device for agricultural machinery comprising driving shaft fixing piece (5), driven shaft are solid
Determine part (3), fixed stock (4), rotation quarter butt (6) and an amesdial (7), the fixed stock (4), rotate quarter butt (6) and
The axis of amesdial probe (71) and the axis of driven shaft (1) are fixed in the same plane.
2. driving shaft according to claim 1 and driven shaft centralising device, it is characterised in that: the driving shaft fixing piece
It (5) include the perforated pan (51) with circular hole, fixing piece (53) under driving shaft upper fixing element (52) and driving shaft, on the driving shaft
Fixing piece (53) can be bolted (2) and be fixed on the driving shaft (8) under fixing piece (52) and driving shaft, described with holes
Disk (51) is a part of the driving shaft upper fixing element (52), when installation, axis of the disk perpendicular to the driving shaft (8)
Line.
3. driving shaft according to claim 1 and driven shaft centralising device, it is characterised in that: the driven shaft fixing piece
It (3) is upper and lower two metal fixing clip hoops, the metal fixing clip hoop axial direction and the driven shaft (1) axis direction phase
Together, two fixing hoop can be bolted (2) and be fixed on the driven shaft (1).
4. driving shaft according to claim 1 or 3 and driven shaft centralising device, it is characterised in that: the fixed stock (4)
By its welding connecting flange (41) and screw (42) be fixed on the driven shaft fixing piece (3), axis and it is described from
The axis of moving axis (1) is in the same face.
5. driving shaft according to claim 1 and driven shaft centralising device, it is characterised in that: the rotation quarter butt (6) two
End is equipped with fastening sleeve (61), (63).
6. driving shaft and driven shaft centralising device according to claim 1 or 5, it is characterised in that: the fastening sleeve
(61), (63) are fastened in connection pin shaft (43) and amesdial probe (71) by fastening bolt (62) respectively, described fixed long
The axis of bar (4), rotation quarter butt (6) and amesdial probe (71) is in the same plane.
7. driving shaft and driven shaft centralising device according to claim 1 or 6, it is characterised in that: the rotation quarter butt
(6) it can be rotated around the connection pin shaft (43) of the fixed stock (4) by the fastening sleeve (61).
8. a kind of driving shaft and driven shaft centering method, which is characterized in that method and step is as follows:
Fixing piece (53) under the driving shaft upper fixing element (52) and driving shaft is bolted (2) and is fixed on institute by step 1)
It states on driving shaft (8), the perforated pan (51) is a part of the driving shaft upper fixing element (52), when installation, makes its disk
Perpendicular to the axis of the driving shaft (8), by the driven shaft fixing piece (3) be bolted (2) be fixed on it is described driven
On axis (1), the fixed stock (4) is fixed on the driven shaft by the connecting flange (41) and screw (42) of its welding and is consolidated
Determine on part (3), is finally fastened on the fastening sleeve (61) of described rotation quarter butt (6) one end by fastening bolt (62) described solid
On the connection pin shaft (43) of connecting-rods with constant lengh (4), at the same amesdial probe (71) by fastening bolt (62) be fastened on it is described rotation it is short
On the fastening sleeve (63) of bar (6) other end, guarantee the fixed stock (4), rotation quarter butt (6) and amesdial probe (71)
Axis and the axis of driven shaft (1) are in the same plane；
Step 2 slidably contacts the amesdial probe (71) and perforated pan (51) disk, amesdial described in school zero (7), turns
It moves the driven shaft (1), every 90 ° of rotation records the data of amesdial, and recording rotational angle respectively is 0 °, 90 °, 180 °, 270 °
When amesdial corresponding data s1, s2, s3, s4, if s1 is equal with s3 and s2 is equal with s4, driving shaft and driven shaft incline without axial
Tiltedly, if s1 is equal with s3 and s2 and s4 is unequal, driving shaft and driven shaft axially upwardly incline in the side of 90 ° and 270 ° measurement points
Tiltedly, if s1 is unequal with s3 and s2 is equal with s4, driving shaft and driven shaft axially upwardly incline in the side of 0 ° and 180 ° measurement point
Tiltedly, if s1 and s3 is unequal and s2 and s4 is unequal, driving shaft has axially inclined with driven shaft；
Step 3) passes through data analysis, according to the standard axle line chart of adjustment axis, the height of device where adjusting driving shaft and level
Distance makes driving shaft and the axially inclined error of driven shaft within the allowable range；
Step 4) slidably contacts the amesdial probe (71) and driving shaft (8) external cylindrical surface, amesdial described in school zero
(7), rotate the driven shaft (1), it is every rotation 90 °, record the data of amesdial, respectively record rotational angle be 0 °, 90 °,
Amesdial corresponding data a1, a2, a3, a4 at 180 °, 270 °, if a1 is equal with a3 and a2 is equal with a4, driving shaft with it is driven
Axis is without radial missing, if a1 is equal with a3 and a2 and a4 is unequal, driving shaft and driven shaft are in the side of 90 ° and 270 ° measurement points
There is radial missing upwards, if a1 is unequal with a3 and a2 is equal with a4, driving shaft and driven shaft are in 0 ° and 180 ° measurement point
There is radial missing on direction, if a1 and a3 is unequal and a2 and a4 is unequal, driving shaft and driven shaft have radial missing；
Step 5) is analyzed again by data, according to the standard axle line chart of adjustment axis, the height of device where adjusting driving shaft
With horizontal distance, after adjustment, reuses the driving shaft and driven shaft centralising device carries out coaxality measurement, until driving shaft
Coaxiality deviation with driven shaft is in the allowed band of standard figures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280147.5A CN109249211A (en) | 2018-10-30 | 2018-10-30 | A kind of driving shaft and driven shaft centralising device for agricultural machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811280147.5A CN109249211A (en) | 2018-10-30 | 2018-10-30 | A kind of driving shaft and driven shaft centralising device for agricultural machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109249211A true CN109249211A (en) | 2019-01-22 |
Family
ID=65043995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811280147.5A Pending CN109249211A (en) | 2018-10-30 | 2018-10-30 | A kind of driving shaft and driven shaft centralising device for agricultural machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109249211A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307774A (en) * | 2019-08-07 | 2019-10-08 | 骆雅雅 | Pipeline enclosure based on displacement principle is away from offset detecting device |
| CN110370015A (en) * | 2019-08-06 | 2019-10-25 | 海洋石油工程股份有限公司 | Offshore platform large structure installation tool |
| CN110682085A (en) * | 2019-10-31 | 2020-01-14 | 中船动力研究院有限公司 | Shafting centering method |
| CN111203699A (en) * | 2020-03-02 | 2020-05-29 | 海马汽车有限公司 | Cylinder cover conduit valve seat press and press precision adjusting method |
| CN111238437A (en) * | 2020-03-10 | 2020-06-05 | 中烜航空科技(上海)有限公司 | Automatic assembly tracking and monitoring equipment for large-scale hole shaft |
| CN112254606A (en) * | 2020-10-16 | 2021-01-22 | 中国航发四川燃气涡轮研究院 | Measuring tool and measuring method for measuring radial dimension of rotor blade tip |
| CN112432583A (en) * | 2020-11-03 | 2021-03-02 | 江西中竹生物质科技有限公司 | Narrow-spacing spindle centering detection device |
| CN115008252A (en) * | 2022-06-17 | 2022-09-06 | 无锡知然和精密机械有限公司 | Double-shaft machine tool centering tool and centering method |
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- 2018-10-30 CN CN201811280147.5A patent/CN109249211A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370015A (en) * | 2019-08-06 | 2019-10-25 | 海洋石油工程股份有限公司 | Offshore platform large structure installation tool |
| CN110370015B (en) * | 2019-08-06 | 2021-03-05 | 海洋石油工程股份有限公司 | Installation tool for large-scale structure of offshore platform |
| CN110307774A (en) * | 2019-08-07 | 2019-10-08 | 骆雅雅 | Pipeline enclosure based on displacement principle is away from offset detecting device |
| CN110307774B (en) * | 2019-08-07 | 2020-11-20 | 骆雅雅 | Pipeline interval deviation detection device based on displacement principle |
| CN110682085A (en) * | 2019-10-31 | 2020-01-14 | 中船动力研究院有限公司 | Shafting centering method |
| CN110682085B (en) * | 2019-10-31 | 2021-11-16 | 中船动力研究院有限公司 | Shafting centering method |
| CN111203699A (en) * | 2020-03-02 | 2020-05-29 | 海马汽车有限公司 | Cylinder cover conduit valve seat press and press precision adjusting method |
| CN111203699B (en) * | 2020-03-02 | 2021-12-21 | 海马汽车有限公司 | Cylinder cover conduit valve seat press and press precision adjusting method |
| CN111238437A (en) * | 2020-03-10 | 2020-06-05 | 中烜航空科技(上海)有限公司 | Automatic assembly tracking and monitoring equipment for large-scale hole shaft |
| CN112254606A (en) * | 2020-10-16 | 2021-01-22 | 中国航发四川燃气涡轮研究院 | Measuring tool and measuring method for measuring radial dimension of rotor blade tip |
| CN112432583A (en) * | 2020-11-03 | 2021-03-02 | 江西中竹生物质科技有限公司 | Narrow-spacing spindle centering detection device |
| CN115008252A (en) * | 2022-06-17 | 2022-09-06 | 无锡知然和精密机械有限公司 | Double-shaft machine tool centering tool and centering method |
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