CN109211066A - A method of for centering detection dovetail type positioning bar string away from - Google Patents
A method of for centering detection dovetail type positioning bar string away from Download PDFInfo
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- CN109211066A CN109211066A CN201810929775.5A CN201810929775A CN109211066A CN 109211066 A CN109211066 A CN 109211066A CN 201810929775 A CN201810929775 A CN 201810929775A CN 109211066 A CN109211066 A CN 109211066A
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- positioning bar
- dovetail
- circle muscle
- muscle
- false
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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
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
- G01B5/16—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between a succession of regularly spaced objects or regularly spaced apertures
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The present invention disclose it is a kind of for centering detection dovetail type positioning bar string away from method, the present invention is suitable for generator or phase modifier using dovetail type positioning bar, its dovetail positioning bar is equidistantly distributed in concentric circles, the concentric circles status requirement of radius size where dovetail positioning bar should meet it will also meet its impartial requirement of string carpenters square cun between adjacent positioned muscle or other equidistant positioning bars.The present invention solves to cause positioning bar dovetail unilateral side centering datum level narrow due to mismachining tolerance, is unable to measure the string between centering dovetail positioning bar away from dimensional problem with ball size.The present invention using positioning bar dovetail two sides as centering datum level, more can centre chord between precise measurement, centering dovetail positioning bar away from.
Description
Technical field
When the present invention is welding, centering dovetail type positioning bar in generator or phase modifier, one kind detecting dovetail for centering
Type positioning bar string away from method.
Background technique
Its out frame such as some Hydrogen-cooling gas turbine generators and large-scale air cooling phase modifier is frequently with dovetail type positioning bar
Fixed iron core punching, dovetail type positioning bar need to have higher positioning accuracy, and (generally dovetail slot corresponding to iron-core lamination gap exists
0.10-0.20mm), it otherwise will cause the deformation of stator core line embedding groove, for this purpose, circle internal diameter position where the dovetail after positioning bar welding equipment
Precision is set within the scope of 0.20-0.30mm, with the string of adjacent positioned muscle away from precision within the scope of 0.30-0.40mm.In positioning bar
Path position size and positioning bar straightness are as requested after centering, as shown in Figure 1, then centering its between other positioning bars
String before positioning bar welding equipment needs that above procedure is repeated away from position dimension, require until can finally reach postwelding size be
Only.
Previous positioning bar string carpenters square cun centering measurement method and its defect have:
1) as shown in Fig. 2, being in the adjacent angle face of convex acute angle as measuring basis, measurement phase using positioning bar dovetail unilateral side
String between adjacent positioning bar is away from this method is simply possible to use in the string between adjacent positioned muscle away from measurement, since special clamp can not
Adjust the angle, for the string between non-adjacent positioning bar as shown in Figure 1 away from can not precise measurement, further, since this method is base
In the vernier caliper for having fixation measuring range, centering measurement and positioning muscle string away from when, be easy to have exceeded the range of the measuring tool；
2) as shown in figure 3, measuring phase as measuring basis in the adjacent angle face of recessed acute angle according to positioning bar dovetail unilateral side
String between adjacent positioning bar is away from this method measurement range is than wide, and under normal circumstances, it is shown in FIG. 1 fixed to can be widely applied to
Position all strings of muscle measure centering away from position dimension, and this method is using bulb ruler both ends bulb respectively in the survey at an acute angle with two sides
Datum level is tangent measures for amount, and in actual application, as shown in figure 4, since the influence of mismachining tolerance causes measurement base
Quasi- face is narrower, and bulb ruler bulb can not be completely tangent with the measurement datum, leads to not such as actual measured amount, centering positioning bar
Between string away from position dimension, additionally due to the measurement method is indirect measurement chord length, influenced by positioning bar dovetail machining accuracy
It is bigger.
In order to avoid being caused due to positioning bar mismachining tolerance such as the case where Fig. 4, the present invention will be according to positioning bar dovetail face sheet
Body can directly be measured with inside micrometer as measuring basis and more accurately reflect the centre chord between positioning bar away from letter
Measurement process is changed, has kept measurement result more accurate, has met with iron-core lamination practical set required precision.
Summary of the invention: object of the present invention is to publicly available in some Hydrogen-cooling gas turbine generators and large-scale air cooling phase modulation
Machine, out frame use the fixed iron core punching of dovetail type positioning bar, centering and measurement and positioning muscle before and after positioning bar welding
When string is away from position dimension, using positioning bar dovetail face itself as measuring basis, directly measured with inside micrometer and more accurate
Reflect centre chord between positioning bar away from vacation circle muscle.Maximum feature of the invention is directly using positioning bar dovetail face as survey
Measure benchmark, can more accurately reflect centre chord between positioning bar away from.
The technical scheme is that including the following steps:
1) first false circle muscle (8) center of circle is overlapped with positioning bar dovetail face (12) center, two sides of dovetail slot and positioning bar
Width dimensions at two side angles in dovetail face (12), center are equal, for the ease of holding from positioning bar dovetail face (12)
Portion is packed into, and dovetail groove depth is goed deep into 0.5-1mm again from the central position；
2) the first false circle muscle (8) is packed on the first positioning bar (1) and is pushed into corresponding measurement position, utilize the first screw
(9) and the second screw (10) is tight by the first false circle muscle (8) and the first positioning bar (1) dovetail face paste；
3) the second false circle muscle (13), third vacation round muscle (14), the 4th false circle muscle (15), the 5th false circle muscle (16), the 6th vacation
Circle muscle (17), the 7th false circle muscle (18) are identical with the first false circle muscle (8), are respectively charged into the second positioning bar (2), third positioning
Muscle (3), the 4th positioning bar (4), the 5th positioning bar (5), the 6th positioning bar (6), the corresponding measurement position of the 7th positioning bar (7)；
4) the first false circle muscle (8) and second false circle muscle (13) outer span L1 are measured respectively with inside micrometer (11), first
Vacation circle muscle (8) and third vacation circle muscle (14) outer span L2, the first false circle muscle (8) and the 4th false circle muscle (15) outer span L3, first
Vacation circle muscle (8) and the 5th false circle muscle (16) outer span L4, the first false circle muscle (8) and the 6th false circle muscle (17) outer span L5, first
Vacation circle muscle (8) and the 7th false circle muscle (18) outer span L6；
5) the first positioning bar (1) and the second positioning bar (2) center line string are away from A1, the first positioning bar (1) and third positioning bar
(3) center line string is away from A2, and the first positioning bar (1) and the 4th positioning bar (4) center line string are away from A3, the first positioning bar (1) and the 5th
Positioning bar (5) center line string is away from A4, and the first positioning bar (1) and the 6th positioning bar (6) center line string are away from A5, the first positioning bar (1)
With the 7th positioning bar (7) center line string away from A6, respectively by L1, L2, L3, L4, L5, L6 plus the outer of the first false circle muscle (8)
Diameter D is obtained；
6) other positioning bar strings are away from measurement, centering, repeat step 3), 4), 5), 6) process.
Technical effect: it is this for measurement and positioning muscle centre chord away from method, install easy to operate, while this method has
Vacation circle muscle is mounted on positioning bar corresponding position, can accurately measure positioning bar string carpenters square cun, this method meets fixed by versatility
Position muscle assemble welding required precision.Under conditions of positioning bar dovetail dimensional accuracy is guaranteed, avoid since positioning bar is surveyed
Amount benchmark mismachining tolerance leads to not the problem of measurement, centering positioning bar string carpenters square cun.
Detailed description of the invention
The part Fig. 1 positioning bar centre chord is away from scale diagrams
Fig. 2 vernier caliper type measuring tool measurement and positioning muscle string is away from schematic diagram
Fig. 3 bulb ruler formula measuring tool measurement and positioning muscle string is away from schematic diagram
Fig. 4 is not used to bulb ruler correct measurement positioning bar measuring basis schematic diagram
Fig. 5 vacation circle muscle and positioning bar dovetail face cooperate schematic diagram
Fig. 6 vacation circle muscle and positioning bar scheme of installation
The part Fig. 7 positioning bar installs false circle muscle and measures size schematic diagram
Wherein: 1 first positioning bar, 2 second positioning bars, 3 third positioning bars, 4 the 4th positioning bars, 5 the 5th positioning bars, 6
Six positioning bars, 7 the 7th positioning bars, 8 first false circle muscle, 9 first screws, 10 second screws, 11 inside micrometers, 12 positioning bar doves
Tail surface, 13 second false circle muscle, 14 third vacations circle muscle, 15 the 4th false circle muscle, 16 the 5th false circle muscle, 17 the 6th false circle muscle, 18 the 7th
Vacation circle muscle.
Specific embodiment:
Below with reference to schematic diagram and specific embodiment, steps are as follows for operation of the present invention:
1) as shown in figure 5, first false circle 8 center of circle of muscle is overlapped with 12 center of positioning bar dovetail face, two sides of dovetail slot and
Two side angles, the center position width dimensions in positioning bar dovetail face 12 are equal, for the ease of from positioning bar dovetail face
12 ends are packed into, and dovetail groove depth is goed deep into 0.5-1mm again from the central position, outer diameter Φ D tolerance (±
0.015mm), two sides dovetail face symmetry requires (± 0.015mm), and using wire cutting Precision Machining, both ends increase threaded hole, uses
In fixation；
2) as shown in fig. 6, the first false circle muscle 8 is packed on the first positioning bar 1 and is pushed into corresponding measurement position, first is utilized
Screw 9 and the second screw 10 are tight by vacation circle muscle 8 dovetail face paste corresponding to the first positioning bar 1；
3) as shown in fig. 7, the second false circle muscle 13, the 14, the 4th false circle muscle the 16, the 6th of false circle muscle the 15, the 5th of third vacation circle muscle
The false circle muscle 18 of vacation circle muscle the 17, the 7th is identical with the first false round muscle 8, is respectively charged into the second positioning bar 2, third positioning bar 3, the
Four positioning bars 4, the 5th positioning bar 5, the 6th positioning bar 6, the corresponding contour measurement position of the 7th positioning bar 7；
4) the first false circle muscle 8 and the second false circle outer span L1 of muscle 13, the first false circle muscle 8 are measured respectively with inside micrometer 11
With the third vacation circle outer span L2 of muscle 14, the first false circle muscle 8 and the 4th false circle outer span L3 of muscle 15, the first false circle muscle 8 and the 5th are false
The circle outer span L4 of muscle 16, the first false circle muscle 8 and the 6th false circle outer span L5 of muscle 17, outside the first false round muscle 8 and the round muscle 18 of the 7th vacation
Span L6；
5) as shown in Figure 1, the first positioning bar 1 and 2 center line string of the second positioning bar are away from A1=L1+D, the first positioning bar 1 with
3 center line string of third positioning bar away from A2=L2+D, the first positioning bar 1 and 4 center line string of the 4th positioning bar away from A3=L3+D, first
Positioning bar 1 and 5 center line string of the 5th positioning bar are away from A4=L4+D, and the first positioning bar 1 and the 6th positioning 18 muscle, 6 center line string are away from A5
=L5+D, the first positioning bar 1 and 7 center line string of the 7th positioning bar are away from A6=L6+D；
6) other positioning bar strings are away from measurement, centering, repeat 3), 4), 5), 6) process.
Claims (1)
1. a method of for centering detection dovetail type positioning bar string away from it is characterized in that: including the following steps:
1) first false circle muscle (8) center of circle is overlapped with positioning bar dovetail face (12) center, two sides of dovetail slot and positioning bar dovetail
Width dimensions at two side angles in face (12), center are equal, for the ease of filling from positioning bar dovetail face (12) end
Enter, dovetail groove depth is goed deep into 0.5-1mm again from the central position；
2) the first false circle muscle (8) is packed on the first positioning bar (1) and is pushed into corresponding measurement position, using the first screw (9) and
Second screw (10) is tight by the first false circle muscle (8) and the first positioning bar (1) dovetail face paste；
3) the second false circle muscle (13), third vacation circle muscle (14), the 4th false circle muscle (15), the 5th false circle muscle (16), the 6th false circle muscle
(17), the 7th false circle muscle (18) is identical with the first false circle muscle (8), is respectively charged into the second positioning bar (2), third positioning bar
(3), the 4th positioning bar (4), the 5th positioning bar (5), the 6th positioning bar (6), the corresponding measurement position of the 7th positioning bar (7)；
4) the first false circle muscle (8) and second false circle muscle (13) outer span L1, the first false circle are measured respectively with inside micrometer (11)
Muscle (8) and third vacation circle muscle (14) outer span L2, the first false circle muscle (8) and the 4th false circle muscle (15) outer span L3, the first false circle
Muscle (8) and the 5th false circle muscle (16) outer span L4, the first false circle muscle (8) and the 6th false circle muscle (17) outer span L5, the first false circle
Muscle (8) and the 7th false circle muscle (18) outer span L6；
5) the first positioning bar (1) and the second positioning bar (2) center line string are away from A1, in the first positioning bar (1) and third positioning bar (3)
Heart line string is away from A2, the first positioning bar (1) and the 4th positioning bar (4) center line string away from A3, the first positioning bar (1) and the 5th positioning bar
(5) center line string is away from A4, and the first positioning bar (1) and the 6th positioning bar (6) center line string are away from A5, the first positioning bar (1) and the 7th
Positioning bar (7) center line string is obtained by L1, L2, L3, L4, L5, L6 plus the outer diameter D of the first false circle muscle (8) respectively away from A6
?；
6) other positioning bar strings are away from measurement, centering, repeat step 3), 4), 5), 6) process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810929775.5A CN109211066B (en) | 2018-08-15 | 2018-08-15 | Method for aligning and detecting chord distance of dovetail type positioning rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810929775.5A CN109211066B (en) | 2018-08-15 | 2018-08-15 | Method for aligning and detecting chord distance of dovetail type positioning rib |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109211066A true CN109211066A (en) | 2019-01-15 |
| CN109211066B CN109211066B (en) | 2020-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810929775.5A Active CN109211066B (en) | 2018-08-15 | 2018-08-15 | Method for aligning and detecting chord distance of dovetail type positioning rib |
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| Country | Link |
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| CN (1) | CN109211066B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253168A (en) * | 2019-07-05 | 2019-09-20 | 哈尔滨电机厂有限责任公司 | A kind of process of steam turbine generator dovetail type positioning bar centering |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4564779A (en) * | 1984-09-14 | 1986-01-14 | General Electric Company | Dynamoelectric machine stator using cylindrical keybars |
| CN201297907Y (en) * | 2008-11-20 | 2009-08-26 | 天津市天发重型水电设备制造有限公司 | Ruler for detecting chord lengths of stator position bars of adjustable hydro generator |
| CN101758323A (en) * | 2009-11-27 | 2010-06-30 | 哈尔滨电机厂有限责任公司 | Dual-dovetail type unmovable key bar assembling and welding process for water turbine generator |
| CN202372116U (en) * | 2011-12-19 | 2012-08-08 | 重庆水轮机厂有限责任公司 | Common measuring tool for chord length of rotor bracket of hydraulic generator |
| CN203629517U (en) * | 2013-10-28 | 2014-06-04 | 哈尔滨电机厂有限责任公司 | Turbonator positioning rib chord distance measurement tool |
| CN104075643A (en) * | 2014-07-14 | 2014-10-01 | 中国水利水电第十四工程局有限公司 | Tool used for measuring chordal distance of positioning ribs of generator stator |
| CN105945483A (en) * | 2016-06-20 | 2016-09-21 | 哈尔滨电机厂有限责任公司 | Before-welding adjustment and alignment process for positioning ribs of turbine generator |
-
2018
- 2018-08-15 CN CN201810929775.5A patent/CN109211066B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4564779A (en) * | 1984-09-14 | 1986-01-14 | General Electric Company | Dynamoelectric machine stator using cylindrical keybars |
| CN201297907Y (en) * | 2008-11-20 | 2009-08-26 | 天津市天发重型水电设备制造有限公司 | Ruler for detecting chord lengths of stator position bars of adjustable hydro generator |
| CN101758323A (en) * | 2009-11-27 | 2010-06-30 | 哈尔滨电机厂有限责任公司 | Dual-dovetail type unmovable key bar assembling and welding process for water turbine generator |
| CN202372116U (en) * | 2011-12-19 | 2012-08-08 | 重庆水轮机厂有限责任公司 | Common measuring tool for chord length of rotor bracket of hydraulic generator |
| CN203629517U (en) * | 2013-10-28 | 2014-06-04 | 哈尔滨电机厂有限责任公司 | Turbonator positioning rib chord distance measurement tool |
| CN104075643A (en) * | 2014-07-14 | 2014-10-01 | 中国水利水电第十四工程局有限公司 | Tool used for measuring chordal distance of positioning ribs of generator stator |
| CN105945483A (en) * | 2016-06-20 | 2016-09-21 | 哈尔滨电机厂有限责任公司 | Before-welding adjustment and alignment process for positioning ribs of turbine generator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253168A (en) * | 2019-07-05 | 2019-09-20 | 哈尔滨电机厂有限责任公司 | A kind of process of steam turbine generator dovetail type positioning bar centering |
| CN110253168B (en) * | 2019-07-05 | 2021-03-26 | 哈尔滨电机厂有限责任公司 | Process method for aligning dovetail type positioning rib of steam turbine generator |
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| Publication number | Publication date |
|---|---|
| CN109211066B (en) | 2020-07-21 |
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