CN1872464A - Method for manufacturing coaxial bore for workpiece with coaxial bore series in ultra long size - Google Patents
Method for manufacturing coaxial bore for workpiece with coaxial bore series in ultra long size Download PDFInfo
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- CN1872464A CN1872464A CN 200510026447 CN200510026447A CN1872464A CN 1872464 A CN1872464 A CN 1872464A CN 200510026447 CN200510026447 CN 200510026447 CN 200510026447 A CN200510026447 A CN 200510026447A CN 1872464 A CN1872464 A CN 1872464A
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Abstract
A method for machining high-accuracy coaxial holes on the workpiece with ultra-long coaxial holes features that after the bearing holes are sequentially and accurately machined, the accessory of machine-tool is turned over by 180 deg. The accurately machined bearing hole is aligned with the coordinate of axle center of said accessory for accurately machining other bearing holes. The position error of finished bearing hole is less than 0.01 mm.
Description
Technical field
The present invention relates to machining, particularly a kind of processing method of coaxial bore for workpiece with coaxial bore series in ultra long size.
Background technology
Adopt the large-sized numerical control plane milling and boring machine that heavy parts coaxial aperture system is added man-hour, owing to be subjected to the restriction of condition, wherein indivedual holes are subjected to the restriction of the dimensions length of machine tool accessories and knife rest, and machine tool accessories can not be finished the processing that coaxial aperture is all coaxial apertures of workpiece in same direction.
With one of large-sized low-speed marine diesel main parts size support is example, and the main position of its structure all is overlength coaxial aperture systems of long 8～10 meters.According to different cylinder numbers, hole system is made up of the dead eye of five equilibrium many grades of bearings at interval not, as shown in Figure 1.Every grade of hole is about 240mm, important technological parameters: total length dead eye 2 coaxiality errors≤0.08mm, adjacent two dead eye coaxiality error≤0.02mm.For guaranteeing its machining accuracy, processing arrangement adopts the method for scurrying a boring to process by the large-sized numerical control plane milling and boring machine.Analyze theoretically, the precision of digital control plane milling and boring machine can satisfy its required precision fully under the normal condition, but because hole series structure compactness, distance is less than the length of machine tool accessories between particularly last adjacent two grades of bearings 28 and 29, make machine tool accessories 3 carry out boring, and have to adopt the processing method of reverse boring from middle the stretching into of two grades of bearings.The processing method of employing reverse boring is carried out the boring meeting following problem is taken place:
Because lathe is big, the pivot of machine tool accessories is away from point of a knife, machine tool accuracy can not accomplish hundred-percent accurately, therefore when behind the machine tool accessories Rotate 180 ° during boring, generally speaking, machine tool accessories 3 turns to front and back the dead eye center O can occur
1With O
2The decentraction phenomenon, as shown in Figure 3.The machine tool accessories of large-sized numerical control plane milling and boring machine has two variations in alignment of shafts position behind Rotate 180 °: the one, and the angular deviation of location benchmark, the 2nd, the vertical error of horizontal tilt so just makes the displacement error that has produced Z axle and Y-axis after the rotation, i.e. O
1And O
2The center displacement.How revising these two error amounts of Δ Y, Δ Z is that employing large-sized numerical control plane milling and boring machine is the key issue that workpiece is accurately processed to the overlength coaxial aperture.
Existing processing positioning method has two kinds:
1. thick earlier, intact 0 ° of direction the 21st～28 hole of fine finishining, machine tool accessories 3 turns to 180 ° then, with 0 ° of good hole of direction right boring of circle, dial gauge school, reprocesses the 29th hole at last.After irradiation is checked, the coaxiality error of dead eye often exceeds drawing permissible accuracy scope to this processing mode, has to reprocess in process finishing.
2. behind earlier thick, 0 ° of direction the 21st～28 hole of right boring, machine tool accessories 3 turns to 180 °, and the shift value of the 28th and the 29th grade of dead eye on Z axle and the Y direction is measured in heavy boring, half right boring the 29th hole then, is revised, and fine finishining at last finishes the 29th hole.This processing method does not often reach drawing permissible accuracy scope.
More than two kinds of processing methods have two shortcomings:
1. use in the process in dial gauge campus, " swinging gesture " that deadweight produced and the length of clamping of dial gauge and dial framework, all uncontrollable in accuracy rating, come deviation seriously to positioning belt.
2. operating personnel also can't guarantee accurate positioning by rule of thumb, and troublesome poeration, waste time and energy, and efficient is low.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the shortcoming of above-mentioned existing processing method, and a kind of processing method of coaxial bore for workpiece with coaxial bore series in ultra long size is provided, to ensure the machining accuracy of overlength coaxial aperture system.
Technical solution of the present invention is:
Adopt the large-sized numerical control plane milling and boring machine, the processing method that is used for coaxial bore for workpiece with coaxial bore series in ultra long size, the key of this method is forward to after each dead eye fine finishining, machine tool accessories is reversed end for end, utilize accurately machined dead eye that the axle center coordinate of machine tool accessories is aimed at, more unfinished dead eye is still carried out fine finishining.
The concrete steps of this method are as follows:
1. be that workpiece is being processed direction of advance along described boring and milling machine greater than the overlength coaxial aperture to be processed of machine tool accessories length at interval with most dead eyes, promptly 0 ° of direction installs;
2. machine tool accessories is stretched into greater than the dead eye of machine tool accessories length earlier and seriatim each dead eye is carried out roughing at interval in 0 ° of direction;
3. after machine tool accessories being turned to 180 °, stretch in each dead eye interval unprocessed dead eye is carried out roughing greater than machine tool accessories length;
4. monolateral 0.1～0.15mm surplus of staying, 0 ° of direction machine tool accessories is stretched into greater than the dead eye of machine tool accessories length at interval in seriatim to the 2. the dead eye of step processing carry out half right boring;
5. 180 ° of monolateral 0.1～0.15mm surpluses of staying of direction, to the 3. the dead eye of step processing carry out half right boring;
6. 0 ° of direction to the 4. the dead eye of step processing carry out fine finishining;
7. machine tool accessories is turned to 180 °, stretch in the dead eye interval of 0 ° of direction side greater than machine tool accessories length, utilize the center of accurately machined dead eye with the accurately machined dead eye of machine tool accessories axes alignment, then to the 5. the dead eye of step processing carry out fine finishining.
Described the 7. the step of the center of the accurately machined dead eye of machine tool accessories axes alignment in step is as follows:
1. after machine tool accessories being turned to 180 °, stretch in the dead eye interval greater than machine tool accessories length, utilize the cutter head peak check cutter head and accurately machined dead eye up and down 4 whether have the gap, then progressively revise as gapped, it is consistent with accurately machined dead eye center that the machine tool accessories axle center is adjusted to;
2. enter in the aperture of accurately machined dead eye and be coated with the medium that last layer is easily observed minute scratch marks and easy to clean on the hole wall of about 10mm, manually feed, examine whether medium has the vestige of being run into by cutter head in the described dead eye, adjustment gap around cutter head peak and dead eye is even;
3. after adjusting, the coordinate position of the record lathe accessory shafts heart retreats to the outer peak of workpiece with machine tool accessories;
4. according to the 3. machine tool accessories axle center coordinate that mixed up of step, machine tool accessories is stretched into still unfinished dead eye, then unfinished dead eye is carried out fine finishining.
Technique effect of the present invention is:
Processing method provided by the invention can make the site error of the dead eye of machine tool accessories tune back processing be controlled at≤the 0.01mm scope in, ensured that the high accuracy coaxial aperture is the machining accuracy of workpiece.
Description of drawings
Fig. 1 is the structure cross-sectional schematic of the inventive method embodiment workpiece.
Fig. 2 is the left view of Fig. 1 workpiece.
The dead eye center displacement error schematic diagram that Fig. 3 is processed to form for 180 ° of processing methods of the general tuning of large-sized numerical control plane milling and boring machine machine tool accessories.
Fig. 4 is the machine tool accessories structural representation.
Among the figure:
The 1-workpiece; 2-coaxial bearings hole system; 21,22......29-dead eye;
O
1, O
2-dead eye center
The L2-dead eye is at interval long; The L3-dead eye is at interval short;
The 3-machine tool accessories;
The 31-cutter head; The 32-tool rest; The 33-boring head; 34-cutter head peak;
35-machine tool accessories axle center; L1-machine tool accessories axial length;
L2＞L1；L3＜L1。
The specific embodiment
The invention will be further described below in conjunction with embodiment, but should not limit protection scope of the present invention with this.
See also the processing method of Fig. 1, Fig. 2 and Fig. 4 coaxial bore for workpiece with coaxial bore series in ultra long size of the present invention earlier, comprise following concrete steps:
1. most dead eyes interval is being processed direction of advance greater than the workpiece of the overlength coaxial aperture system to be processed of machine tool accessories length along described boring and milling machine, promptly 0 ° of direction installs;
2. earlier 0 ° of direction machine tool accessories 3 is stretched into dead eye at interval L2 seriatim each dead eye 21,22,23...28 are carried out roughing in greater than the interval of machine tool accessories length L 1;
3. after machine tool accessories 3 being turned to 180 °, unprocessed dead eye 29 is carried out roughing from the right-hand member of dead eye 29;
4. monolateral 0.1～0.15mm surplus of staying stretches into machine tool accessories 3 in 0 ° of direction that 2. each dead eye 21,22, the 23...28 of step processing carry out half right boring to the seriatim at interval greater than the dead eye of machine tool accessories length L 1;
5. 180 ° of monolateral 0.1～0.15mm surpluses of staying of direction, to the 3. the dead eye 29 of step processing carry out half right boring;
6. 4. dead eye 21,22, the 23...28 of step processing carry out right boring to the in 0 ° of direction;
7. after machine tool accessories being turned to 180 °, stretch in the dead eye interval greater than machine tool accessories length, utilize cutter head peak 34 check with accurately machined dead eye 27 up and down 4 whether have the gap, then progressively revise dead eye 27 center O that make machine tool accessories 3 axle center 35 be adjusted to and process as gapped
1Consistent;
8. be coated with the blue oil of last layer on the aperture of accurately machined dead eye 27 enters the hole wall of about 10mm, manually feed examines whether medium has the vestige of being run into by cutter head in the described dead eye, adjust until cutter head peak and dead eye the gap is even all around;
9. after adjusting, the coordinate position in the axle center 35 of record machine tool accessories 3 retreats to the outer peak of workpiece with machine tool accessories 3;
10. according to the 9. coordinate in machine tool accessories 3 axle center 35 that mixed up of step, machine tool accessories 3 is stretched into dead eye 29 from the right-hand member of workpiece to be processed, dead eye 29 is carried out fine finishining.
Through check, the coaxial aperture that adopts the inventive method to process is that the coaxial precision of the coaxial aperture of workpiece is site error≤0.01mm.
Claims (5)
1. one kind is adopted the large-sized numerical control plane milling and boring machine, the processing method that is used for coaxial bore for workpiece with coaxial bore series in ultra long size, the key that it is characterized in that this method is forward to after each dead eye fine finishining, machine tool accessories is reversed end for end, utilize accurately machined dead eye that the axle center coordinate of machine tool accessories is aimed at, more unfinished dead eye is still carried out fine finishining.
2. the processing method of coaxial bore for workpiece with coaxial bore series in ultra long size according to claim 1 is characterized in that the concrete steps of this method are as follows:
1. most dead eyes interval is being processed direction of advance greater than the workpiece of the overlength coaxial aperture system to be processed of machine tool accessories length along described boring and milling machine, promptly 0 ° of direction installs;
2. machine tool accessories is stretched into greater than the dead eye of machine tool accessories length earlier and seriatim each dead eye is carried out roughing at interval in 0 ° of direction;
3. after machine tool accessories being turned to 180 °, stretch in each dead eye interval unprocessed dead eye is carried out roughing greater than machine tool accessories length;
4. monolateral 0.1～0.15mm surplus of staying, 0 ° of direction machine tool accessories is stretched into greater than the dead eye of machine tool accessories length at interval in seriatim to the 2. the dead eye of step processing carry out half right boring;
5. 180 ° of monolateral 0.1～0.15mm surpluses of staying of direction, to the 3. the dead eye of step processing carry out half right boring;
6. 0 ° of direction to the 4. the dead eye of step processing carry out fine finishining;
7. machine tool accessories is turned to 180 °, stretch in the dead eye interval of 0 ° of direction side greater than machine tool accessories length, utilize the center of accurately machined dead eye with the accurately machined dead eye of machine tool accessories axes alignment, then to the 5. the dead eye of step processing carry out fine finishining.
3. the processing method of coaxial bore for workpiece with coaxial bore series in ultra long size according to claim 2,7. the step with the center of the accurately machined dead eye of machine tool accessories axes alignment in step is as follows to it is characterized in that described the:
1. after machine tool accessories being turned to 180 °, stretch in the dead eye interval greater than machine tool accessories length, utilize the inspection of cutter head peak and accurately machined dead eye up and down 4 whether have the gap, then progressively revise as gapped, it is consistent with accurately machined dead eye center that the machine tool accessories axle center is adjusted to;
2. on entering the hole wall of about 10mm, the aperture of accurately machined dead eye coats the medium of easy observation minute scratch marks and easy to clean, manually feed, examine whether medium has the vestige of being run into by cutter head in the described dead eye, adjustment gap around cutter head peak and dead eye is even;
3. after adjusting, the coordinate position of the record lathe accessory shafts heart retreats to the outer peak of workpiece with machine tool accessories;
4. according to the 3. machine tool accessories axle center coordinate that mixed up of step, machine tool accessories is stretched to still unfinished dead eye, then unfinished dead eye is carried out fine finishining.
4. according to the processing method of claim 1 or 2 or 3 each described coaxial bore for workpiece with coaxial bore series in ultra long size, it is characterized in that the axis hole in the described overlength coaxial aperture system is cylinder-shaped hole or round taper hole.
5. according to the processing method of the described coaxial bore for workpiece with coaxial bore series in ultra long size of claim 3, it is characterized in that described medium is chalk dust or blue oil.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100264477A CN100381237C (en) | 2005-06-03 | 2005-06-03 | Method for manufacturing coaxial bore for workpiece with coaxial bore series in ultra long size |
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|---|---|---|---|
| CNB2005100264477A CN100381237C (en) | 2005-06-03 | 2005-06-03 | Method for manufacturing coaxial bore for workpiece with coaxial bore series in ultra long size |
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| CN1872464A true CN1872464A (en) | 2006-12-06 |
| CN100381237C CN100381237C (en) | 2008-04-16 |
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Cited By (11)
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| CN102322825A (en) * | 2011-06-02 | 2012-01-18 | 南京航空航天大学 | Optical measuring system and method for coaxiality of extra-long-hole part |
| CN102489739A (en) * | 2011-12-29 | 2012-06-13 | 重庆机床(集团)有限责任公司 | Method for processing multi-axis hole system of differential shell |
| CN101764482B (en) * | 2008-12-10 | 2012-11-28 | 抚顺煤矿电机制造有限责任公司 | Processing method of bracket holes of tunneller type asynchronous motor |
| CN103158018A (en) * | 2011-12-14 | 2013-06-19 | 中核建中核燃料元件有限公司 | Overlong thin-wall zirconium pipe mutually vertical hole class milling combination jig |
| CN103342135A (en) * | 2013-07-26 | 2013-10-09 | 乐至县熊猫机器制造有限公司 | High-precision installing method of auxiliary frame of sweeping machine |
| CN103372666A (en) * | 2012-04-26 | 2013-10-30 | 昆山江锦机械有限公司 | Processing method and concentricity measuring tool for coaxial hole of diesel engine oil supply unit casing |
| CN108161344A (en) * | 2017-11-27 | 2018-06-15 | 江苏远方动力科技有限公司 | A kind of processing method of the path lengths such as high-precision away from interruption hole |
| CN109108587A (en) * | 2018-10-31 | 2019-01-01 | 青岛淄柴博洋柴油机股份有限公司 | A kind of cutting chamber frame spindle hole processing technology |
| PL423728A1 (en) * | 2017-12-04 | 2019-06-17 | Arkadiusz Gruchała | Method for machining of large-sized elements from stainless steel |
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| US3751175A (en) * | 1970-11-05 | 1973-08-07 | Porta Tool Inc | Portable line boring bar assembly |
| US5221165A (en) * | 1992-01-21 | 1993-06-22 | Litton Industrial Automation Systems, Inc. | Camshaft bore machining method and apparatus |
| US5435676A (en) * | 1992-10-27 | 1995-07-25 | National Broach & Machine Company | Two-stage broaching of engine block bearings |
| DE19830903B4 (en) * | 1998-07-10 | 2006-07-13 | Gebr. Heller Maschinenfabrik Gmbh | Device and method for machining holes in a workpiece using such a device |
| JP3716681B2 (en) * | 1999-08-30 | 2005-11-16 | 三菱自動車エンジニアリング株式会社 | Hole processing equipment |
| DE19943990A1 (en) * | 1999-09-14 | 2001-04-05 | Mapal Fab Praezision | Process for machining bore surfaces |
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| CN101764482B (en) * | 2008-12-10 | 2012-11-28 | 抚顺煤矿电机制造有限责任公司 | Processing method of bracket holes of tunneller type asynchronous motor |
| CN102322825A (en) * | 2011-06-02 | 2012-01-18 | 南京航空航天大学 | Optical measuring system and method for coaxiality of extra-long-hole part |
| CN102322825B (en) * | 2011-06-02 | 2013-02-20 | 南京航空航天大学 | Optical measuring system and method for coaxiality of extra-long-hole part |
| CN103158018A (en) * | 2011-12-14 | 2013-06-19 | 中核建中核燃料元件有限公司 | Overlong thin-wall zirconium pipe mutually vertical hole class milling combination jig |
| CN103158018B (en) * | 2011-12-14 | 2015-10-28 | 中核建中核燃料元件有限公司 | A kind of ultralong thin walled zirconium pipe mutual upright opening system milling built-up jig |
| CN102489739A (en) * | 2011-12-29 | 2012-06-13 | 重庆机床(集团)有限责任公司 | Method for processing multi-axis hole system of differential shell |
| CN102489739B (en) * | 2011-12-29 | 2013-05-29 | 重庆机床(集团)有限责任公司 | Method for processing multi-axis hole system of differential shell |
| CN103372666B (en) * | 2012-04-26 | 2015-05-13 | 昆山江锦机械有限公司 | Processing method and concentricity measuring tool for coaxial hole of diesel engine oil supply unit casing |
| CN103372666A (en) * | 2012-04-26 | 2013-10-30 | 昆山江锦机械有限公司 | Processing method and concentricity measuring tool for coaxial hole of diesel engine oil supply unit casing |
| CN103342135A (en) * | 2013-07-26 | 2013-10-09 | 乐至县熊猫机器制造有限公司 | High-precision installing method of auxiliary frame of sweeping machine |
| CN108161344A (en) * | 2017-11-27 | 2018-06-15 | 江苏远方动力科技有限公司 | A kind of processing method of the path lengths such as high-precision away from interruption hole |
| CN108161344B (en) * | 2017-11-27 | 2019-10-01 | 江苏远方动力科技有限公司 | A kind of processing method of the path lengths such as high-precision away from interruption hole |
| PL423728A1 (en) * | 2017-12-04 | 2019-06-17 | Arkadiusz Gruchała | Method for machining of large-sized elements from stainless steel |
| CN109108587A (en) * | 2018-10-31 | 2019-01-01 | 青岛淄柴博洋柴油机股份有限公司 | A kind of cutting chamber frame spindle hole processing technology |
| CN109108587B (en) * | 2018-10-31 | 2020-08-11 | 青岛淄柴博洋柴油机股份有限公司 | Machining process for main shaft hole of cutting chamber frame |
| CN111405146A (en) * | 2019-01-02 | 2020-07-10 | 北京图森智途科技有限公司 | Method for manufacturing camera housing, multi-view camera, imaging apparatus, and vehicle |
| CN111405146B (en) * | 2019-01-02 | 2021-07-16 | 北京图森智途科技有限公司 | Method for manufacturing camera housing, multi-view camera, imaging apparatus, and vehicle |
| CN117564782A (en) * | 2024-01-16 | 2024-02-20 | 四川普什宁江机床有限公司 | Processing method of high-precision coaxial hole system |
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Owner name: HUDONG HEAVY MACHINERY CO., LTD.; SHANGHAI ZHONGC Free format text: FORMER OWNER: HUDONG HEAVY MACHINERY CO., LTD. Effective date: 20080801 |
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Effective date of registration: 20080801 Address after: No. 2851 Pudong Road, Shanghai, Research Institute of machine building, zip code: 200129 Co-patentee after: CSSC-MES Diesel Co., Ltd. Patentee after: Hudong heavy machine Co., Ltd. Address before: No. 2851 Pudong Road, Shanghai, Research Institute of machine building, zip code: 200129 Patentee before: Hudong Heavy Mechine Co., Ltd. |