CN105880699B - A kind of keyway in-process measurement method of rotor support power generator - Google Patents
A kind of keyway in-process measurement method of rotor support power generator Download PDFInfo
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- CN105880699B CN105880699B CN201610205327.1A CN201610205327A CN105880699B CN 105880699 B CN105880699 B CN 105880699B CN 201610205327 A CN201610205327 A CN 201610205327A CN 105880699 B CN105880699 B CN 105880699B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/30—Milling straight grooves, e.g. keyways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention relates to a kind of processing of keyway of the placement yoke of large-scale rotor support power generator and measuring method.A kind of keyway in-process measurement method of rotor support power generator, according to rotor field spider and the installation processing request of yoke, the milling device of gate is placed on rotor field spider periphery using hanging apparatus, line processing is carried out on main force's muscle directly on rotor field spider.After machining, directly the keyway of processing is measured with survey mass using micrometer is fixed on truss, error is produced after measurement and is adjusted at any time.Applied the invention provides a kind of on huge water wheel generator, it is necessary to be processed a kind of keyway in-process measurement method of rotor support power generator of measurement and adjustment at the scene；Solves the technical problem that huge water wheel generator rotor field spider can not be processed and be measured present in prior art.
Description
Technical field
The present invention relates to one kind processing and measuring method, more particularly to a kind of large-scale rotor support power generator to put
Put processing and the measuring method of the keyway of yoke.
Background technology
Hydrogenerator typically all includes rotor, stator, main shaft, the yoke on rotor, and magnetic is provided with yoke
Pole, electric energy is produced by cutting magnetic line and generated electricity.Yoke typically uses solid yoke and stacked yoke.Solid yoke one
As be used for high speed small-capacity generator, with rotating shaft monobloc forging or hot jacket in rotating shaft, Surface Machining has dove tail to be used for fixed magnetic pole.It is small
The solid yoke that size generator uses, because rotor is not very heavy, it is not necessary to large mold and large-scale punching.And in big chi
Using solid yoke rotor can be made very heavy in very little generator, and dovetail slot needs special milling head to process, work efficiency is low and milling head
It is fragile, high processing costs, therefore, the stacked yoke of large scale generator generally use.Stacked yoke is by one group of yoke
On rotor field spider in rotating shaft, outer round surface is machined with T tails and is used for fixed magnetic pole the overlapping hot jacket of ring.And for huge water wheels
Generator, because size is excessively huge, wherein the mounting means of yoke is also very different, and its structure used is in hydraulic generator
The external peripheral surface of machine rotor support is provided with cage bar, and keyway is processed in cage bar, yoke is placed in keyway.And due to huge water
The rotor field spider volume of turbine generator is also huge, inconvenience transport；Its requirement installed is again very high, it is necessary to by rotor field spider split
Part is lifted into behind scene carries out welding assembly processing again, and this special processing mode and measuring method all do not have also at present
Occurred.
The content of the invention
Applied the invention provides a kind of on huge water wheel generator, it is necessary to be processed what is measured and adjust at the scene
A kind of keyway in-process measurement method of rotor support power generator；Solving can not be to huge water wheel present in prior art
The technical problem that generator rotor support is processed and measured.
The above-mentioned technical problem of the present invention is that solved by following technical proposals：
A kind of keyway in-process measurement method of rotor support power generator,
The first step, the rotor field spider of hydrogenerator is placed on buttress, the rotor field spider of hydrogenerator is carried out
Coarse adjustment, make rotor support power generator approximate horizontal；
Second step, will measurement truss installa-tion to the center of rotor support power generator, and will measurement truss it is horizontal with
Radial direction is adjusted, and makes measurement truss parallel with the upper surface of rotor field spider, truss pivot and rotor field spider center
With one heart；Measurement truss can reach the surface of main force's muscle of the excircle of rotor field spider；
3rd step, scriber is installed on measurement truss, using scriber rotor support power generator main force muscle
Mark the linear of keyway notch shape in upper surface；
4th step, lifting place gate milling device in the processing stations of the external peripheral surface of rotor field spider, coarse adjustment equipment
Accurate adjustment milling unit head position makes knife bar meet centripetal requirement, the X/Y of control numerically-controlled slide in the horizontal plane after foundation level
Direction carries out the processing of milling key groove, and the Z-direction direction of vertical direction is determined using weight piano wire mode, then utilizes numerical control knife
Frame carries out the processing of milling key groove；
5th step, after machining, keyway is measured, measurement include the measurement of notch shape, keyway elevation carrection,
The measurement of the bottom radius of keyway and the distribution consistency degree measurement of keyway；Wherein notch shape is measured using etalon,
The measurement of keyway perpendicularity, the form and position tolerance of the depth of parallelism is measured using weight piano wire；The bottom radius of keyway utilizes survey
Measure truss installa-tion micrometer conjunction measuring fixture to carry out, the distribution consistency degree of keyway passes through to the distance between two neighboring keyway
Measure；
6th step, after measurement terminates, it is finely adjusted if there is deviation according to measurement result by milling device.
According to rotor field spider and the installation processing request of yoke, the milling device of gate is placed on using hanging apparatus and turned
Submounts are peripheral, and line processing is carried out on main force's muscle directly on rotor field spider.After machining, using fixing thousand on truss
Divide chi directly to be measured with survey mass to the keyway of processing, error is produced after measurement and is adjusted at any time.The milling device of gate can
Operated simultaneously with more, improve processing efficiency.The milling device of gate includes the work that can be moved up and down in z-direction
Platform, workbench are driven by the motor being fixed on support.The workbench of gate milling device is provided with X and the slide plate of Y-direction,
Workbench can be adjusted in X and Y-direction.It is processed to the layout line by gate milling device.Directly process at the scene
Then measure, cost is low, while is conveniently adjusted according to actual conditions, improves the machining accuracy of yoke keyway.In the present invention
Described X, Y and Z-direction is defined according to direction in space, is not to be defined according to the coordinate system of CNC milling machine
's.
Preferably, the horizontal direction of the inherent measurement truss of the 3rd described step is fixed with micrometer, in measurement truss
End is fixed with scriber, and scriber is vertical with micrometer, determines scriber to the center of rotor support power generator using micrometer
Distance, then mark the linear of notch shape in the upper surface of main force's muscle of rotor support power generator using scriber.Profit
The distance to center is determined with micrometer, to ensure that the position of each notch distance center is identical.Using being fixed on truss
Scriber is rule, convenient operation.
Preferably, the measured material of the bottom radius of keyway in the 5th described step is a chevron gauge block, chevron amount
Block includes a raised crest, and crest is connected in the notch of keyway, and hydraulic generator rotor is higher by after the installation of chevron gauge block
The upper surface of main force's muscle of support, then using the crest for the miking chevron gauge block being fixed on truss to hydraulic generator
The distance of machine rotor carriage center, it is ensured that the distance at bottom land to the center of each keyway is equal.Described chevron gauge block crest
Highly it is more than the groove depth of keyway, the cross section of the crest of chevron gauge block is trapezoidal.Because the keyway of processing is rectangle, chevron gauge block
Crest there is a plane, because the height of crest is more than the depth of keyway, therefore the plane of crest seamless can be connected to
The bottom land of keyway, the remainder of chevron gauge block are not in contact with keyway, so as to ensure that the precision of measurement.Chevron gauge block is one
Individual cuboid, its cross section is into " mountain " shape.On the fluting direction of keyway, a portion of chevron gauge block is in keyway, separately
An outer part exposes the upper surface that rotor field spider is higher by outside keyway, so as to allow micrometer to be connected to the crest of chevron gauge block
On, realize the measurement to the groove depth of keyway.
Preferably, the distribution consistency degree measurement of the keyway in the 5th described step, being will be fixed in two neighboring keyway
Chevron gauge block, measurement column is placed between chevron gauge block and bottom land, utilize the measurement column in the two neighboring keyway of miking
The distance between, ensure that the radian between two neighboring keyway is identical.Two are placed between described each chevron gauge block and bottom land
Individual isodiametric measurement column, there is difference in height between two measurement columns.The different measurement column of two height is set, can conveniently be carried out
Continuous measurement, a high measurement column and a short measurement column are one group, distance between the two are measured, so that it is determined that two
The distance between keyway.
Therefore, a kind of keyway in-process measurement method of rotor support power generator of the invention possesses following advantages：
Scene is directly processed to the keyway of rotor field spider, convenient operation；Direct measurement after processing, it can be entered according to measurement result
Row fine setting, ensures machining accuracy.Special process equipment, different field conditions is adapted to, improves processing efficiency.
Brief description of the drawings
Fig. 1 is a kind of line schematic diagram of the keyway processing of rotor support power generator of the present invention.
Fig. 2 is the enlarged diagram at A in Fig. 1.
Fig. 3 is a kind of schematic diagram of the keyway in-process measurement of rotor support power generator of the present invention.
Fig. 4 is the enlarged section schematic diagram at Fig. 3 B.
Fig. 5 is the schematic diagram of the chevron gauge block amplification in Fig. 3.
Fig. 6 is the schematic diagram of the process equipment in Fig. 3.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical scheme of invention is described in further detail.
Embodiment：
As shown in figs. 1 and 3, a kind of keyway in-process measurement method of rotor support power generator,
The first step, the rotor field spider 2 of hydrogenerator is placed on buttress 3, coarse adjustment is carried out to rotor field spider 2, makes water
Turbine generator rotor field spider is approximate horizontal；
Second step, measurement truss 1 is installed to the center of rotor support power generator 2, and measurement truss 1 passes through bearing etc.
The center of rotor support power generator is installed to, without power drive device, it is necessary to when rotating, by manually promoting；It will survey
Amount truss 1 is horizontal and radial direction is adjusted, and makes measurement truss 1 parallel with the upper surface of rotor field spider 2, the measurement after adjustment
Truss energy 1 reaches main force's muscle 19 of the external peripheral surface of rotor field spider；
3rd step, scriber 5 is installed on measurement truss, scriber 5 is vertical with measurement truss, with hydraulic generator rotor branch
The center of frame 2 is the center of circle, using the distance of main force's muscle 19 of the measuring center of micrometer 4 to the outer rim of rotor field spider 2, then utilizes scriber
The linear of the shape of keyway notch 6, the notch shape of keyway are marked in the upper surface of main force's muscle 19 of rotor support power generator
For rectangle (as shown in Figure 2)；
4th step, lifting place gate milling device 7 in the processing stations of the external peripheral surface of rotor field spider 2, gate milling
Turning equipment 7 includes carrying out the Equipment Foundations 16 of coarse adjustment, support 18, the workbench 17 of installation on mount 18 etc..Coarse adjustment is by setting
Fixed bolt is adjusted on the basis of standby, and motor 12 is fixed with support, and motor 12 drives screw mandrel 13 to cause workbench 17
Moved up and down in z-direction, the bottom of workbench 17 is provided with two layers of slide unit 15, can be in X by the slide unit 15 of installation
It is adjusted with Y-direction, milling head 14 is installed on the table；
Accurate adjustment milling unit head position makes knife bar meet centripetal requirement after coarse adjustment Equipment Foundations level, controls numerically-controlled slide
The processing of milling key groove is carried out in X/Y directions, Z-direction direction is determined using weight piano wire mode, is then entered using numerically-controlled slide
The processing (as shown in Figure 6) of row milling key groove；
5th step, after machining, keyway is measured, it is parallel that measurement includes the measurement of notch shape, keyway plane
The distribution consistency degree measurement of the measurement of degree, perpendicularity etc., the measurement of the bottom radius of keyway and keyway；
Wherein notch shape is measured using etalon, and keyway elevation carrection is measured using weight piano wire；
As shown in figure 4, the bottom radius of keyway is carried out using the conjunction measuring fixture of truss installa-tion micrometer 4 is measured, measured material includes
One chevron module (as shown in Figure 5), chevron module are pressed in keyway by clamp frame 10.Chevron module 8 is a strip
Module, the cross section of chevron module are in " mountain " font, and chevron module includes a crest 11, the cross section of crest 11 be it is trapezoidal,
The top surface of crest is connected to the bottom land of keyway, then using the top surface of miking chevron module apart from hydraulic generator machine support
The distance at center, so that it is determined that the bottom radius of keyway.The distribution consistency degree of keyway by between two neighboring keyway away from
From measuring, particularly two different isodiametric measurement columns 9 of height are fixed in keyway by chevron gauge block, so
The distance between two measurement columns of miking is placed between two adjacent high measurement columns afterwards, by measuring chord length,
Judge two keyway position dimensions and indexing whether in claimed range.By measuring two high measurement posts and two low measurements respectively
Post measures the chord length of adjacent key slot center.Above-mentioned micrometer is all to use extension bar type inside micrometer.
6th step, if size has deviation after being measured, continue processing adjustment using gate milling device.
Claims (5)
1. a kind of keyway in-process measurement method of rotor support power generator, it is characterised in that：
The first step, the rotor field spider of hydrogenerator is placed on buttress, coarse adjustment is carried out to the rotor field spider of hydrogenerator,
Make rotor support power generator approximate horizontal；
Second step, by measurement truss installa-tion to the center of rotor support power generator, and will measurement truss level and radial direction
Direction is adjusted, allow measurement truss it is parallel with the upper surface of rotor field spider, truss pivot and rotor field spider center are concentric,
Measurement truss can reach the surface of main force's muscle of the excircle of rotor field spider；
3rd step, scriber is installed on measurement truss, using scriber in the upper end of main force's muscle of rotor support power generator
Mark the linear of keyway notch shape in face；
4th step, lifting place gate milling device in the processing stations of the external peripheral surface of rotor field spider, coarse adjustment Equipment Foundations
Accurate adjustment milling unit head position makes knife bar meet centripetal requirement, the X/Y directions of control numerically-controlled slide in the horizontal plane after level
The processing of milling key groove is carried out, the Z-direction direction of vertical direction is determined using weight piano wire mode, is then entered using numerically-controlled slide
The processing of row milling key groove；
5th step, after machining, keyway is measured, measure the measurement for including notch shape, keyway elevation carrection, keyway
Bottom radius measurement and keyway distribution consistency degree measurement；Wherein notch shape is measured using etalon, keyway
The measurement of perpendicularity, the form and position tolerance of the depth of parallelism is measured using weight piano wire；The bottom radius of keyway utilizes and measures purlin
Frame installation micrometer conjunction measuring fixture is carried out, and the distribution consistency degree of keyway to the distance between two neighboring keyway by carrying out
Measurement；The measured material of the bottom radius of keyway is a chevron gauge block, and chevron gauge block includes a raised crest, and crest abuts
In the notch of keyway, the upper surface of rotor support power generator is higher by after the installation of chevron gauge block, then using being fixed on purlin
Distance of the crest of miking chevron gauge block on frame to rotor support power generator center, it is ensured that the groove of each keyway
The distance at bottom to center is equal；
6th step, after measurement terminates, it is finely adjusted if there is deviation according to measurement result by milling device.
A kind of 2. keyway in-process measurement method of rotor support power generator according to claim 1, it is characterised in that：
The horizontal direction of the inherent measurement truss of the 3rd described step is fixed with micrometer, is fixed with scriber in the end of measurement truss, draws
Pin is vertical with micrometer, determines that scriber to the distance at the center of rotor support power generator, is then utilized and drawn using micrometer
Pin marks the linear of notch shape in the upper surface of main force's muscle of rotor support power generator.
A kind of 3. keyway in-process measurement method of rotor support power generator according to claim 1, it is characterised in that：
The height of described chevron gauge block crest is more than the groove depth of keyway, and the cross section of the crest of chevron gauge block is trapezoidal.
4. a kind of keyway in-process measurement method of rotor support power generator according to claims 1 to 3 any one,
It is characterized in that：The distribution consistency degree measurement of keyway in the 5th described step, is chevron amount will to be fixed in two neighboring keyway
Block, measurement column is placed between chevron gauge block and bottom land, using between the measurement column in the two neighboring keyway of miking
Distance, ensure that the radian between two neighboring keyway is identical.
A kind of 5. keyway in-process measurement method of rotor support power generator according to claim 4, it is characterised in that：
Two isodiametric measurement columns are placed between described each chevron gauge block and bottom land, have difference in height between two measurement columns.
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| US11338461B2 (en) * | 2019-04-26 | 2022-05-24 | General Electric Company | System for machining the abradable material of a turbofan engine |
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| CN201289362Y (en) * | 2008-10-29 | 2009-08-12 | 广东省韶关众力发电设备有限公司 | Device for measuring round degree of large-sized through-flow generator rotor |
| CN201295860Y (en) * | 2008-10-31 | 2009-08-26 | 昆明电机厂有限公司 | Measuring tool setting device for processing rotor key slot |
| CN102042792B (en) * | 2009-11-20 | 2011-12-07 | 杭州福朗机电科技有限公司 | Electric lifting stator inner cavity cyclometer |
| CN102500942A (en) * | 2011-11-21 | 2012-06-20 | 哈尔滨电机厂有限责任公司 | Method for assembling and processing secondary stud for disc type rotor spider of hydraulic turbine generator on site |
| KR20140048677A (en) * | 2012-10-16 | 2014-04-24 | 삼성전자주식회사 | Control system for curved plate rounding processing apparatus and control method thereof |
| CN103978344B (en) * | 2014-05-08 | 2016-05-25 | 哈尔滨电机厂有限责任公司 | The process of generator amature yoke keyway building site processing |
| CN104801750B (en) * | 2015-04-29 | 2017-05-31 | 重庆齿轮箱有限责任公司 | A kind of processing method of gear shaft key groove |
| CN105149664A (en) * | 2015-09-25 | 2015-12-16 | 潍坊凯力石油化工机械有限公司 | Special milling machine for special key slot and processing process for special key slot |
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