CN104107943A - Million-kilowatt nuclear turbine pedestal plate finish milling processing method - Google Patents
Million-kilowatt nuclear turbine pedestal plate finish milling processing method Download PDFInfo
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- CN104107943A CN104107943A CN201410180815.2A CN201410180815A CN104107943A CN 104107943 A CN104107943 A CN 104107943A CN 201410180815 A CN201410180815 A CN 201410180815A CN 104107943 A CN104107943 A CN 104107943A
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- cutter
- facing cutter
- dot location
- pedestal plate
- low dot
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Abstract
The invention relates to a million-kilowatt nuclear turbine pedestal plate finish milling processing method in order to solve the problem of low processing precision of the flatness and the surface quality of pedestal plates in the prior art. The above processing method determines the inclination degree of a milling cutter disc through a dial gage, and processing the pedestal plate according to the inclination angle to eliminate lapping defects in order to solve the million-kilowatt nuclear turbine pedestal plate finish processing problem and make the flatness and the surface quality of the processed million-kilowatt nuclear turbine pedestal plate reach technical requirements.
Description
Technical field
The present invention relates to a kind of 1,000,000 nuclear steam turbine pedestal plate finish-milling processing methods.
Background technology
1000000 nuclear steam turbine pedestal board plane degree and surface quality require very high, on large-sized gantry milling machine, process upper and lower surface, because the size of pedestal plate is large, milling cutter can not process by a cutter, can only be as sweeping the floor, cutter one blade row becomes the track of parallel distance to complete the processing of monoblock pedestal plate; Arrange cutter track number fewer to connect tool marks fewer simultaneously, and processing effect is better.The milling cutter processing that so just need to try one's best large with diameter, if but milling cutter enough will amplify main shaft (column) end face and workbench parallelism error greatly, general this error is that main shaft (column) and workbench out of plumb cause, if the precision of dispatching from the factory of lathe is not high, or the operating period is longer, capital cause machine tool chief axis (column) and verticality of work bench error excessive, milling cutter can have gradient in a direction like this, while causing finish-milling plane, between two cuttves, connect tool marks, monoblock pedestal plate is processed just as stair, the requirement that makes 1,000,000 nuclear steam turbine pedestal board plane degree and surface quality machining accuracy not reach Ra3.2.
Summary of the invention
The present invention seeks in order to solve pedestal board plane degree of the prior art and the not high problem of surface quality machining accuracy, and a kind of 1,000,000 nuclear steam turbine pedestal plate finish-milling processing methods are provided, comprise the steps:
Step 1, facing cutter is installed on machine tool chief axis, place a dial gauge on platen, gauge outfit upwards, is pointed to gauge outfit by the center of the facing cutter that blade is not installed;
Step 2, facing cutter is walked to the position apart from R place, facing cutter center along X-axis, wherein, R is the cutter hub inside radius of facing cutter, makes facing cutter under the state not rotating, walk the full circle track that a radius is R by circular interpolation, determines height point position and low dot location on the circumferencial direction of facing cutter;
Step 3, by height put position, low dot location respectively with difference record apart from R place, facing cutter center, calculate the angle angle of high some position and low dot location and X-axis by coordinate position;
Step 4, dial gauge is placed into respectively on high some position and low dot location, rotary milling tools dish, if dial gauge registration is constant, can be defined as facing cutter;
Step 5, in the position apart from facing cutter center R+a and R+b place, respectively repeat steps two and step 3 record difference, in the time of repeating step two and step 3, that R is replaced to respectively to R+a and R+b, wherein, a, b are constant, and R+a and R+b are all less than or equal to milling cutter diameter, be directly proportional calculate the height point position loaded onto after blade and the difference of low dot location by three groups of data difference to cutter hub inside radius R;
Step 6, by pedestal board placing on lathe, the center line of pedestal plate is parallel with low dot location line with the height point position of facing cutter, facing cutter is loaded onto the direction of putting position and low dot location line at vertical height after blade along straight path gang milling two cuttves, in the difference range whether the height point position of verification machined surface and the difference of low dot location are calculated in step 5, if in scope, continue following step; If not in scope, repeating step one is to step 5;
Step 7, on pedestal plate, map out every cutter spacing M, calculate the difference of height N of spacing M, difference of height N=(M/D) * X, the height point position that X is facing cutter and the difference of low dot location, D is milling cutter diameter;
Machining locus is to arrange along some parallel straight line orbits of vertical facing cutter high some position and the equidistant M of low dot location line direction, when facing cutter adds man-hour along vertical facing cutter high some position and the equidistant M of low dot location line direction from downside toward high side, next cutter is than the corresponding N that raises of a upper cutter main shaft; Otherwise when adding man-hour from high side toward downside, next cutter, than the corresponding reduction of upper cutter main shaft N, is processed successively;
Step 8, repeating step one are processed the another side of pedestal plate to step 7.
Compare compared with prior art, processing method of the present invention can make cutter rail arrange point-blank along height point position and the low dot location line direction of facing cutter, by angle of inclination processing pedestal plate, can eliminate the generation that connects tool marks, after standing up, adopt the processing opposite side plane that uses the same method.The invention solves the accurately machined difficult point of 1,000,000 nuclear steam turbine pedestal board plane, ensured that flatness after 1,000,000 nuclear steam turbine pedestal plates processing and surface quality require to reach the Ra3.2 of technical requirement.
Brief description of the drawings
Fig. 1 is that processing method cutter rail of the present invention moves towards schematic diagram;
Fig. 2 be in Fig. 1 A-A to schematic diagram;
Fig. 3 is the structural representation of facing cutter in the present invention;
In figure: 1, facing cutter 2, pedestal plate 3, cushion block.
Detailed description of the invention
Detailed description of the invention one: as shown in Figure 1 and Figure 2, a kind of 1,000,000 nuclear steam turbine pedestal plate finish-milling processing methods, comprise the steps:
Step 1, facing cutter 1 is installed on machine tool chief axis, place a dial gauge on platen, gauge outfit upwards, is pointed to gauge outfit by the center of the facing cutter that blade is not installed;
Step 2, by facing cutter 1, along X-axis, (described X-axis refers to as shown in Figure 2, the center line O-O place direction of pedestal plate) walk to the position apart from R place, facing cutter center, wherein, R is the cutter hub inside radius of facing cutter, make facing cutter 1 under the state not rotating, walk the full circle track that a radius is R by circular interpolation, determine height point position and low dot location on the circumferencial direction of facing cutter 1;
Step 3, by height put position, low dot location respectively with difference record apart from R place, facing cutter center, calculate the angle angle of high some position and low dot location and X-axis by coordinate position;
Step 4, dial gauge is placed into respectively on high some position and low dot location, rotary milling tools dish 1, if dial gauge registration is constant, can be defined as facing cutter 1 tilts;
Step 5, in the position apart from facing cutter 1 center R+a and R+b place, respectively repeat steps two and step 3 record difference, in the time of repeating step two and step 3, that R is replaced to respectively to R+a and R+b, wherein, a, b are constant, and R+a and R+b are all less than or equal to milling cutter diameter D (described milling cutter diameter refers to and loads onto after blade, radially blade is with interior diameter), be directly proportional to cutter hub inside radius R by three groups of data difference and calculate the height point position loaded onto after blade and the difference of low dot location;
Step 6, pedestal plate 2 is placed on lathe, the center line of pedestal plate 2 is parallel with low dot location line with the height point position of facing cutter 1, facing cutter 1 is loaded onto the direction of putting position and low dot location line at vertical height after blade along straight path gang milling two cuttves, in the difference range whether the height point position of verification machined surface and the difference of low dot location are calculated in step 5, if in scope, continue following step; If not in scope, repeating step one is to step 5;
Step 7, on pedestal plate 2, map out every cutter spacing M, calculate the difference of height N of spacing M, difference of height N=(M/D) * X, X is the height point position of facing cutter 1 and the difference of low dot location, D is milling cutter diameter;
Machining locus is to arrange along some parallel straight line orbits of vertical facing cutter 1 high some position and the equidistant M of low dot location line direction, when facing cutter 1 adds man-hour along vertical facing cutter high some position and the equidistant M of low dot location line direction from downside toward high side, next cutter is than the corresponding N that raises of a upper cutter main shaft; Otherwise when adding man-hour from high side toward downside, next cutter, than the corresponding reduction of upper cutter main shaft N, is processed successively;
Step 8, repeating step one are processed the another side of pedestal plate to step 7.
Detailed description of the invention two: present embodiment is different from detailed description of the invention one: in step 5, load onto the height point position of the facing cutter after blade and the difference of low dot location can adopt laser detector directly to measure.
Detailed description of the invention three: present embodiment is different from detailed description of the invention one: in step 7, in the time that cutter step appears connecing in two cutter rail joints on machined surface, use cushion block 3 that pedestal plate 2 is adjusted to the height parallel with facing cutter 1 along the height point position of facing cutter 1 with low dot location line direction.
Detailed description of the invention four: present embodiment is different from detailed description of the invention three: the height H of cushion block 3 meets: H=(L/D) * X, wherein, L is that pedestal plate 2 is along the height point position of facing cutter 1 and the distance of low dot location line direction, the i.e. lengthwise dimension of pedestal plate 2.
Detailed description of the invention five: present embodiment is different from detailed description of the invention one: the selection range of milling cutter diameter D is at 200～600mm.
Below in conjunction with specific embodiment, beneficial effect of the present invention is described:
Take milling cutter diameter as example as 600mm, first facing cutter 1 is installed on machine tool chief axis, on platen, place a dial gauge, gauge outfit upwards, gauge outfit is pointed to in the center that does not fill blade facing cutter 1, facing cutter 1 is walked apart from 157.5mm place, facing cutter center along X-axis, by carrying out the program of one section of circular interpolation, make facing cutter 1 under the state not turning, walk the full circle track that a radius is 157.5mm, so just can get on the circumferencial direction of facing cutter 1 and whether have height, if had, height is put to position and low dot location difference record, (be milling cutter walking in the process of a circle by coordinate position, the coordinate of the height recording) can calculate the high angle angle of putting position and low dot location and X-axis, dial gauge is placed into respectively to the height point position that is 180 degree, low dot location, rotary milling tools dish 1, if dial gauge registration is constant, illustrate that whole facing cutter 1 tilts, not height point position and the low dot location that facing cutter 1 distortion produces, again apart from facing cutter center 200mm, 300mm place repeats to find out respectively high some position and low dot location, and record difference, be directly proportional to cutter hub inside radius and can calculate height point position and the low dot location difference that the milling cutter diameter of the facing cutter of loading onto blade is 600mm by three groups of data difference above, can directly measure difference if there is laser detector can directly load onto blade.
As shown in Figure 2, pedestal plate 2 is placed on lathe, the center line O-O of pedestal plate 2 is parallel with low dot location line with the height point position of facing cutter 1, within the scope of pedestal plate 2 allowance (allowance of general pedestal plate is in 1mm left and right), facing cutter 1 is loaded onto the P-P direction of putting position and low dot location line at vertical height after blade along straight path gang milling two cuttves, first, whether the height point position of verification machined surface and the difference of low dot location be in the difference range of above-mentioned calculating, secondly, in the time there is connecing cutter step in two cutter rail joints on machined surface, use cushion block 3 that pedestal plate is adjusted to the height parallel with facing cutter along the height point position of facing cutter with low dot location line O-O direction, the height H of cushion block 3 meets: H=(L/600) * X, wherein, X is that facing cutter 1 is because of the height point position of generation and the difference of low dot location of tilting, L is that pedestal plate 2 is along the height point position of facing cutter 1 and the length of low dot location line direction, be exactly by pedestal plate 2 along facing cutter 1 high some position and low dot location line direction length L one side than the padded H of opposite side, make pedestal plate 2 planes parallel with low dot location line O-O direction in height point position with facing cutter 1.
On pedestal plate 2, map out every cutter spacing M, calculate the difference of height N of spacing M, difference of height N=(M/600) * X, machining locus is to arrange along some parallel straight line orbits of the equidistant M of direction of vertical facing cutter 1 high some position and low dot location line P-P, when facing cutter 1 adds man-hour along the equidistant M of P-P direction of vertical facing cutter high some position and low dot location line from downside toward high side, next cutter is than the corresponding N that raises of a upper cutter main shaft; Otherwise when adding man-hour from high side toward downside, next cutter, than the corresponding reduction of upper cutter main shaft N, is processed successively; Cutter rail is analysed and observe arrangement point-blank along facing cutter 1 high some position and low dot location line like this, so just can pedestal plate be processed by angle of inclination, can eliminate the generation that connects tool marks, stands up rear same method processing opposite side plane.By processing method of the present invention, solve 1,000,000 nuclear steam turbine pedestal board plane fine finishining difficult points, ensure that flatness and the surface quality after 1,000,000 nuclear steam turbine pedestal processing requires to have reached technical requirement.
The above; it is only preferably detailed description of the invention of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. 1,000,000 nuclear steam turbine pedestal plate finish-milling processing methods, is characterized in that comprising the steps:
Step 1, facing cutter is installed on machine tool chief axis, place a dial gauge on platen, gauge outfit upwards, is pointed to gauge outfit by the center of the facing cutter that blade is not installed;
Step 2, facing cutter is walked to the position apart from R place, facing cutter center along X-axis, wherein, R is the cutter hub inside radius of facing cutter, makes facing cutter under the state not rotating, walk the full circle track that a radius is R by circular interpolation, determines height point position and low dot location on the circumferencial direction of facing cutter;
Step 3, by height put position, low dot location respectively with difference record apart from R place, facing cutter center, calculate the angle angle of high some position and low dot location and X-axis by coordinate position;
Step 4, dial gauge is placed into respectively on high some position and low dot location, rotary milling tools dish, if dial gauge registration is constant, can be defined as facing cutter;
Step 5, in the position apart from facing cutter center R+a and R+b place, respectively repeat steps two and step 3 record difference, in the time of repeating step two and step 3, that R is replaced to respectively to R+a and R+b, wherein, a, b are constant, and R+a and R+b are all less than or equal to milling cutter diameter, be directly proportional calculate the height point position loaded onto after blade and the difference of low dot location by three groups of data difference to cutter hub inside radius R;
Step 6, by pedestal board placing on lathe, the center line of pedestal plate is parallel with low dot location line with the height point position of facing cutter, facing cutter is loaded onto the direction of putting position and low dot location line at vertical height after blade along straight path gang milling two cuttves, in the difference range whether the height point position of verification machined surface and the difference of low dot location are calculated in step 5, if in scope, continue following step; If not in scope, repeating step one is to step 5;
Step 7, on pedestal plate, map out every cutter spacing M, calculate the difference of height N of spacing M, difference of height N=(M/D) * X, the height point position that X is facing cutter and the difference of low dot location, D is milling cutter diameter;
Machining locus is to arrange along some parallel straight line orbits of vertical facing cutter high some position and the equidistant M of low dot location line direction, when facing cutter adds man-hour along vertical facing cutter high some position and the equidistant M of low dot location line direction from downside toward high side, next cutter is than the corresponding N that raises of a upper cutter main shaft; Otherwise when adding man-hour from high side toward downside, next cutter, than the corresponding reduction of upper cutter main shaft N, is processed successively;
Step 8, repeating step one are processed the another side of pedestal plate to step 7.
2. 1,000,000 nuclear steam turbine pedestal plate finish-milling processing methods according to claim 1, is characterized in that: in step 5, load onto the height point position of the facing cutter after blade and the difference of low dot location can adopt laser detector directly to measure.
3. 1,000,000 nuclear steam turbine pedestal plate finish-milling processing methods according to claim 1, it is characterized in that: in step 7, in the time that cutter step appears connecing in two cutter rail joints on machined surface, use cushion block that pedestal plate is adjusted to the height parallel with facing cutter along the height point position of facing cutter with low dot location line direction.
4. 1,000,000 nuclear steam turbine pedestal plate finish-milling processing methods according to claim 3, is characterized in that: the height H of cushion block meets: H=(L/D) * X, wherein, L is that pedestal plate is along the height point position of facing cutter and the distance of low dot location line direction.
5. 1,000,000 nuclear steam turbine pedestal plate finish-milling processing methods according to claim 1, is characterized in that: the selection range of milling cutter diameter D is at 200～600mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410180815.2A CN104107943B (en) | 2014-04-28 | 2014-04-28 | Million nuclear steam turbine pedestal plate finish-milling processing methods |
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| CN201410180815.2A CN104107943B (en) | 2014-04-28 | 2014-04-28 | Million nuclear steam turbine pedestal plate finish-milling processing methods |
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| CN104107943A true CN104107943A (en) | 2014-10-22 |
| CN104107943B CN104107943B (en) | 2016-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352043A (en) * | 2018-11-15 | 2019-02-19 | 浙江坤博机械制造有限公司 | The processing technology of segment difference when a kind of equipment eliminates milling flat when having position error |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2261829A1 (en) * | 1973-01-02 | 1975-09-19 | Gladwin Floyd Ralph | |
| CN102581549A (en) * | 2012-03-21 | 2012-07-18 | 无锡圣贝尔机电有限公司 | Process for fabricating wind-driven generator base |
| CN102809344A (en) * | 2012-08-08 | 2012-12-05 | 安徽博微长安电子有限公司 | Online detecting method for profile tolerance of curve |
| CN103737088A (en) * | 2013-12-13 | 2014-04-23 | 陕西宝成航空仪表有限责任公司 | Precision processing method for symmetric key grooves on shaft |
-
2014
- 2014-04-28 CN CN201410180815.2A patent/CN104107943B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2261829A1 (en) * | 1973-01-02 | 1975-09-19 | Gladwin Floyd Ralph | |
| CN102581549A (en) * | 2012-03-21 | 2012-07-18 | 无锡圣贝尔机电有限公司 | Process for fabricating wind-driven generator base |
| CN102809344A (en) * | 2012-08-08 | 2012-12-05 | 安徽博微长安电子有限公司 | Online detecting method for profile tolerance of curve |
| CN103737088A (en) * | 2013-12-13 | 2014-04-23 | 陕西宝成航空仪表有限责任公司 | Precision processing method for symmetric key grooves on shaft |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109352043A (en) * | 2018-11-15 | 2019-02-19 | 浙江坤博机械制造有限公司 | The processing technology of segment difference when a kind of equipment eliminates milling flat when having position error |
| CN109352043B (en) * | 2018-11-15 | 2020-08-18 | 浙江坤博精工科技股份有限公司 | Machining process for eliminating section difference in plane milling process when equipment has positioning error |
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| CN104107943B (en) | 2016-07-06 |
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Effective date of registration: 20221221 Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province Patentee after: HARBIN TURBINE Co.,Ltd. Patentee after: HADIAN POWER EQUIPMENT NATIONAL ENGINEERING RESEARCH CENTER CO.,LTD. Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin Patentee before: HARBIN TURBINE Co.,Ltd. |