CN103862226A - Method for processing extra large bearing holes having coaxiality requirements - Google Patents
Method for processing extra large bearing holes having coaxiality requirements Download PDFInfo
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- CN103862226A CN103862226A CN201210544604.3A CN201210544604A CN103862226A CN 103862226 A CN103862226 A CN 103862226A CN 201210544604 A CN201210544604 A CN 201210544604A CN 103862226 A CN103862226 A CN 103862226A
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- cutter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
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Abstract
The invention discloses a method for processing extra large bearing holes having coaxiality requirements. The method comprises a first step of segmented rough machining and a second step of finish machining after integrated welding. First a numerical control dragon mill is adopted to mill total-length two end faces, and a process and measuring basis is formed; a numerical control boring and milling machine is adopted to perform alignment according to a reference surface, semi finish machining and finish machining are performed on bearing holes at two ends, processing of large-diameter holes with the diameters larger than fai 1500mm can be achieved, the coaxiality error of the holes at two ends is no larger than 0.03mm, and accordingly precision of the coaxiality position of the bearing holes at two ends can be guaranteed.
Description
Technical field
The present invention relates to a kind of processing method of hole, be specifically related to a kind of processing method of the extra large size bearing hole with axiality requirement.
Background technology
2500KN/6300KNm large-sized forging manipulator is the auxiliary equipment supporting with 165MN free forging oil press.Stay pipe in this manipulator as shown in Figure 1, material is ZG20SiMn steel-casting, 126.366 tons of net weight, overall length 8415mm, tube head is provided with diameter of phi 2300/ Φ 2060H7, the dead eye of dark 580mm, and pipe tail is provided with diameter of phi 2075/ Φ 1900H7/ Φ 1880H8, the dead eye of dark 460mm, and the coaxiality error of two stomidiums is not more than 0.01mm.The big-diameter bearing hole at two ends is used for installing large size bearing, and the endoporus of bearing carries out assembly connection with the hollow shaft that clamp, stapling head, clamp bar are housed, and makes whole clamp part can carry out 360 ° of rotations.
Due to the two ends bore dia super large of this stay pipe, and axiality requirement is high, and existing equipment cannot complete the processing to this stay pipe bearings at both ends hole.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of processing method of the extra large size bearing hole with axiality requirement, and it can utilize existing machine tool processing large diameter hole.
For solving the problems of the technologies described above, the technical solution that the present invention has the processing method in the extra large size bearing hole of axiality requirement is:
Comprise the following steps:
The first step, segmentation roughing;
One side stays 10mm surplus, Φ 2300/ Φ 2060 holes of rough turn tube head;
One side stays 10mm surplus, Φ 2075/ Φ 1900/ Φ 1880 holes of rough turn pipe tail;
Second step, is welded into the rear fine finishining of entirety;
Operation one, will be welded as a whole through rough machined tube head, pipe shaft, pipe tail;
Operation two, by upper numerical control dragon milling after workpiece line, centering; The end face in the end face in half finish-milling Φ 2060 holes and Φ 1880 holes, makes both ends of the surface parallelism error be not more than 0.03mm;
Operation three, at the left benchmark steel plate of end face spot welding polylith in Φ 2060 holes, the left side of the left benchmark steel plate of polylith is in the same plane, and error is not more than 0.03mm; Formation left side, the left side auxiliary datum plane of the left benchmark steel plate of polylith, the axial medial surface of the left benchmark steel plate of polylith forms left axially datum level;
At the right benchmark steel plate of end face spot welding polylith in Φ 1880 holes, the right side of the right benchmark steel plate of polylith is in the same plane, and error is not more than 0.03mm; Formation right side, the right side auxiliary datum plane of the right benchmark steel plate of polylith, the axial medial surface of the right benchmark steel plate of polylith forms right axially datum level;
Operation four, by digital-control boring-milling machine on workpiece, makes tube head end consistent with the major axes orientation of lathe; Adopt amesdial by the transverse plane in auxiliary datum plane centering Φ 2060 holes, left side, error is not more than 0.03mm;
Cutter-head mechanism is installed on digital-control boring-milling machine, utilizes cutter-head mechanism, one side stays 2mm surplus, half right boring Φ 2300/ Φ 2060 holes, chamfering; Measure the distance between Φ 2300/ Φ 2060 centers, hole and left side and the medial surface of left benchmark steel plate, and record;
Operation five, right boring Φ 2300/ Φ 2060H7 hole, chamfering;
Operation six, by workpiece tune, makes pipe tail end consistent with the major axes orientation of lathe; Adopt amesdial by the transverse plane in auxiliary datum plane centering Φ 1880 holes, right side, error is not more than 0.03mm;
Utilize cutter-head mechanism, one side stays 2mm surplus, half right boring Φ 2075/ Φ 1900/ Φ 1880 holes, chamfering; Measure the distance between Φ 2075/ Φ 1900/ Φ 1880 centers, hole and right side and the medial surface of right benchmark steel plate; If there is error, reconditioner bed position, the two stomidium centers that ensure are consistent with the end face auxiliary datum plane of benchmark steel plate and the distance of axial datum level, and error is not more than 0.01mm;
Operation seven, right boring Φ 2075/ Φ 1900H7/ Φ 1880H8 hole, chamfering.
Described cutter-head mechanism comprises cutter head 5, and one end of cutter head 5 is provided with blade row 1; Blade row 1 is fixedly connected with cutter head 5 by short screw 2, middle screw 3, long spiro nail 4; Blade row 1 connects boring cutter; Boring cutter is fixedly connected with blade row 1 by screw 8;
The arranged outside of blade row 1 has cover plate 11, and cover plate 11 is fixedly connected with blade row 1 with cutter head 5; Cover plate 11 is fixedly connected with blade row 1 by multiple bolts 12, packing ring 13; The rear end face of cutter head 5 is provided with keyway.
The installation method of described cutter-head mechanism is as follows:
The blade row 1 that boring cutter is housed is inserted in the groove on cutter head 5, according to the size in hole to be processed, adjust the position of blade row 1, then with short screw 2, middle screw 3, long spiro nail 4, blade row 1 is fixedly connected with cutter head 5; The outside of blade row 1 is covered with cover plate 11, and cover plate 11 is fixedly connected with blade row 1 by multiple bolts 12, packing ring 13;
Drive cutter head 5 to rotate by milling spindle, make cutter head 5 carry out axial feed motion by ram, carry out the processing in hole.
The technique effect that the present invention can reach is:
The present invention first adopts in the milling of numerical control dragon and mills out overall length both ends of the surface, and forms technique and measuring basis (being end face auxiliary datum plane and axial datum level); Adopt again digital-control boring-milling machine by datum level centering, semifinishing and fine finishining are carried out in bearings at both ends hole, can realize the processing that diameter is greater than the large diameter hole of φ 1500mm, and the coaxiality error of two stomidiums is not more than 0.03mm, thereby can ensures the axiality positional precision in bearings at both ends hole.
The present invention is directly installed on cutterhead on the milling spindle of machine ram, make large many of the contact-making surface of cutterhead and milling spindle contact area rate cutterhead and main shaft, the rigidity of milling spindle is greater than the rigidity of main shaft, cutterhead is in the smear metal process in hole, obtain higher stability, obtained good cutting effect, the deviation from circular from hole only has 0.01mm, and precision has met the technical requirement of drawing completely.
Blade row on cutterhead of the present invention can regulate according to the size of machining hole, can reach Φ 1700mm to Φ 2400mm with the diameter range of this nonstandard cutterhead machining hole.And according to the status of equipment of different lathes, what design, making and cutterhead matched runs in, and also can use on other heavy duty machine tools.
The invention solves the processing difficult problem in the part stay pipe middle (center) bearing hole, main pass of large-sized forging manipulator, improved the ability of utilizing existing machine tool processing large diameter hole.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of the stay pipe of large-sized forging manipulator;
Fig. 2 is the schematic diagram that the present invention has the cutter-head mechanism that the processing method in extra large size bearing hole that axiality requires adopts;
Fig. 3 is the side view of Fig. 2.
Description of reference numerals in figure:
1 is blade row, and 2 is short screw,
3 is middle screw, and 4 is long spiro nail,
5 is cutter head, and 6 is bolt,
7 is packing ring, and 8 is screw,
9 is screw, and 10 is key,
11 is cover plate, and 12 is bolt,
13 is packing ring.
Detailed description of the invention
The present invention has the processing method in the extra large size bearing hole of axiality requirement, comprises the following steps:
The first step, segmentation roughing;
One side stays 10mm surplus, Φ 2300/ Φ 2060 holes of rough turn tube head;
One side stays 10mm surplus, Φ 2075/ Φ 1900/ Φ 1880 holes of rough turn pipe tail;
Second step, is welded into the rear fine finishining of entirety;
Operation one, will be welded as a whole through rough machined tube head, pipe shaft, pipe tail;
Operation two, by upper numerical control dragon milling after workpiece line, centering; The both ends of the surface (being the end face in Φ 2060 holes and the end face in Φ 1880 holes) of half finish-milling overall length 8200mm, make both ends of the surface parallelism error be not more than 0.03mm;
Operation three, at the left benchmark steel plate of end face spot welding polylith (established technology welding block) in Φ 2060 holes, the left side of the left benchmark steel plate of polylith is in the same plane, and error is not more than 0.03mm; Formation left side, the left side auxiliary datum plane of the left benchmark steel plate of polylith, the axial medial surface of the left benchmark steel plate of polylith forms left axially datum level;
At the right benchmark steel plate of end face spot welding polylith in Φ 1880 holes, the right side of the right benchmark steel plate of polylith is in the same plane, and error is not more than 0.03mm; Formation right side, the right side auxiliary datum plane of the right benchmark steel plate of polylith, the axial medial surface of the right benchmark steel plate of polylith forms right axially datum level;
Operation four, by digital-control boring-milling machine on workpiece, makes tube head end consistent with the major axes orientation of lathe; Adopt amesdial to press the transverse plane in datum level centering Φ 2060 holes, error is not more than 0.03mm;
Cutter-head mechanism is installed on digital-control boring-milling machine, utilizes cutter-head mechanism, one side stays 2mm surplus, half right boring Φ 2300/ Φ 2060 holes, chamfering; Measure the distance between Φ 2300/ Φ 2060 centers, hole and left side and the medial surface of left benchmark steel plate, and record;
Cutter-head mechanism as shown in Figure 2 and Figure 3, comprises cutter head 5, and one end of cutter head 5 is provided with blade row 1; Blade row 1 is fixedly connected with cutter head 5 by short screw 2, middle screw 3, long spiro nail 4; Blade row 1 connects boring cutter; Boring cutter is fixedly connected with blade row 1 by screw 8;
The arranged outside of blade row 1 has cover plate 11, and cover plate 11 is fixedly connected with blade row 1 with cutter head 5; Cover plate 11 is fixedly connected with blade row 1 by multiple bolts 12, packing ring 13; The rear end face of cutter head 5 is provided with keyway.
Short screw 2 is M20 × 50mm;
Middle screw 3 is M20 × 70mm;
Long spiro nail 4 is M20 × 85mm.
When use, first key 10 is mounted in the keyway of cutter head 5, key 10 is fixedly connected with cutter head 5 by screw 9; Again cutter head 5 is loaded onto to the ram of digital-control boring-milling machine; Then cutter head 5 is fastened on the milling spindle of digital-control boring-milling machine by multiple bolts 6 and packing ring 7;
The blade row 1 that boring cutter is housed is inserted in the groove on cutter head 5, according to the size in hole to be processed, adjust the position of blade row 1, then with short screw 2, middle screw 3, long spiro nail 4, blade row 1 is fixedly connected with cutter head 5; The outside of blade row 1 is covered with cover plate 11, and cover plate 11 is fixedly connected with blade row 1 by multiple bolts 12, packing ring 13;
Drive cutter head 5 to rotate by milling spindle, make cutter head 5 carry out axial feed motion by ram, carry out the processing in hole.
Operation five, right boring Φ 2300/ Φ 2060H7 hole, chamfering;
Operation six, by workpiece tune, makes pipe tail end consistent with the major axes orientation of lathe; Adopt amesdial to press the transverse plane in datum level centering Φ 1880 holes, error is not more than 0.03mm;
Utilize cutter-head mechanism, one side stays 2mm surplus, half right boring Φ 2075/ Φ 1900/ Φ 1880 holes, chamfering; Use laser tracker to measure the distance between Φ 2075/ Φ 1900/ Φ 1880 centers, hole and right side and the medial surface of right benchmark steel plate; If there is error, reconditioner bed position, the two stomidium centers that ensure are consistent with the end face auxiliary datum plane of benchmark steel plate and the distance of axial datum level (is the distance between Φ 2075/ Φ 1900/ Φ 1880 centers, hole and right side and the medial surface of right benchmark steel plate, distance between Φ 2300/ Φ 2060 centers, hole and left side and the medial surface of left benchmark steel plate of surveying with operation four is consistent), error is not more than 0.01mm;
Operation seven, right boring Φ 2075/ Φ 1900H7/ Φ 1880H8 hole, chamfering.
Claims (3)
1. a processing method with the extra large size bearing hole of axiality requirement, is characterized in that, comprises the following steps:
The first step, segmentation roughing;
One side stays 10mm surplus, Φ 2300/ Φ 2060 holes of rough turn tube head;
One side stays 10mm surplus, Φ 2075/ Φ 1900/ Φ 1880 holes of rough turn pipe tail;
Second step, is welded into the rear fine finishining of entirety;
Operation one, will be welded as a whole through rough machined tube head, pipe shaft, pipe tail;
Operation two, by numerical control dragon milling on workpiece, centering; The end face in the end face in half finish-milling Φ 2060 holes and Φ 1880 holes, makes both ends of the surface parallelism error be not more than 0.03mm;
Operation three, at the left benchmark steel plate of end face spot welding polylith in Φ 2060 holes, the left side of the left benchmark steel plate of polylith is in the same plane, and error is not more than 0.03mm; Formation left side, the left side auxiliary datum plane of the left benchmark steel plate of polylith, the axial medial surface of the left benchmark steel plate of polylith forms left axially datum level;
At the right benchmark steel plate of end face spot welding polylith in Φ 1880 holes, the right side of the right benchmark steel plate of polylith is in the same plane, and error is not more than 0.03mm; Formation right side, the right side auxiliary datum plane of the right benchmark steel plate of polylith, the axial medial surface of the right benchmark steel plate of polylith forms right axially datum level;
Operation four, by digital-control boring-milling machine on workpiece, makes tube head end consistent with the major axes orientation of lathe; Adopt amesdial by the transverse plane in auxiliary datum plane centering Φ 2060 holes, left side, error is not more than 0.03mm;
Cutter-head mechanism is installed on digital-control boring-milling machine, utilizes cutter-head mechanism, one side stays 2mm surplus, half right boring Φ 2300/ Φ 2060 holes, chamfering; Measure the distance between Φ 2300/ Φ 2060 centers, hole and left side and the medial surface of left benchmark steel plate, and record;
Operation five, right boring Φ 2300/ Φ 2060H7 hole, chamfering;
Operation six, by workpiece tune, makes pipe tail end consistent with the major axes orientation of lathe; Adopt amesdial by the transverse plane in auxiliary datum plane centering Φ 1880 holes, right side, error is not more than 0.03mm;
Utilize cutter-head mechanism, one side stays 2mm surplus, half right boring Φ 2075/ Φ 1900/ Φ 1880 holes, chamfering; Measure the distance between Φ 2075/ Φ 1900/ Φ 1880 centers, hole and right side and the medial surface of right benchmark steel plate; If there is error, reconditioner bed position, the two stomidium centers that ensure are consistent with the end face auxiliary datum plane of benchmark steel plate and the distance of axial datum level, and error is not more than 0.01mm;
Operation seven, right boring Φ 2075/ Φ 1900H7/ Φ 1880H8 hole, chamfering.
2. the processing method in the extra large size bearing hole with axiality requirement according to claim 1, is characterized in that, described cutter-head mechanism comprises cutter head (5), and one end of cutter head (5) is provided with blade row (1); Blade row (1) is fixedly connected with cutter head (5) by short screw (2), middle screw (3), long spiro nail (4); Blade row (1) connects boring cutter; Boring cutter is fixedly connected with blade row (1) by screw (8);
The arranged outside of blade row (1) has cover plate (11), and cover plate (11) is fixedly connected with blade row (1) with cutter head (5); Cover plate (11) is fixedly connected with blade row (1) by multiple bolts (12), packing ring (13); The rear end face of cutter head (5) is provided with keyway.
3. the processing method in the extra large size bearing hole with axiality requirement according to claim 2, is characterized in that, the installation method of described cutter-head mechanism is as follows:
First key (10) is mounted in the keyway of cutter head (5); Again cutter head (5) is loaded onto to the ram of digital-control boring-milling machine; Then by multiple bolts (6) and packing ring (7), cutter head (5) is fastened on the milling spindle of digital-control boring-milling machine;
The blade row (1) that boring cutter is housed is inserted in the groove on cutter head (5), according to the size in hole to be processed, adjust the position of blade row (1), then use short screw (2), middle screw (3), long spiro nail (4) that blade row (1) is fixedly connected with cutter head (5); The outside of blade row (1) is covered with cover plate (11), and cover plate (11) is fixedly connected with blade row (1) by multiple bolts (12), packing ring (13);
Drive cutter head (5) rotation by milling spindle, make cutter head (5) carry out axial feed motion by ram, carry out the processing in hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210544604.3A CN103862226A (en) | 2012-12-14 | 2012-12-14 | Method for processing extra large bearing holes having coaxiality requirements |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210544604.3A CN103862226A (en) | 2012-12-14 | 2012-12-14 | Method for processing extra large bearing holes having coaxiality requirements |
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| CN103862226A true CN103862226A (en) | 2014-06-18 |
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| CN201210544604.3A Pending CN103862226A (en) | 2012-12-14 | 2012-12-14 | Method for processing extra large bearing holes having coaxiality requirements |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624620A (en) * | 2016-11-07 | 2017-05-10 | 武汉船用机械有限责任公司 | Processing method for large suspension bridge splay saddle |
| CN108188446A (en) * | 2018-03-08 | 2018-06-22 | 何胜保 | Casting cabin casts hole prosthetic device and casting hole restorative procedure |
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| JPS58206305A (en) * | 1982-05-24 | 1983-12-01 | Mitsubishi Heavy Ind Ltd | Adjusting method of tool diameter |
| CN2150955Y (en) * | 1992-11-26 | 1993-12-29 | 济南第三机床厂 | Multifunctional effective milling head and chuck |
| CN201033355Y (en) * | 2007-06-01 | 2008-03-12 | 扬州大学 | Internal boring combined turning tool |
| CN101439457A (en) * | 2007-11-22 | 2009-05-27 | 上海重型机器厂有限公司 | Method for processing pressing sleeve hole of large diameter in top and bottom cross member of oil press |
| CN101850398A (en) * | 2009-03-31 | 2010-10-06 | 上海重型机器厂有限公司 | Machining method and cutter head of support tube in large-scale track forging manipulator |
-
2012
- 2012-12-14 CN CN201210544604.3A patent/CN103862226A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58206305A (en) * | 1982-05-24 | 1983-12-01 | Mitsubishi Heavy Ind Ltd | Adjusting method of tool diameter |
| CN2150955Y (en) * | 1992-11-26 | 1993-12-29 | 济南第三机床厂 | Multifunctional effective milling head and chuck |
| CN201033355Y (en) * | 2007-06-01 | 2008-03-12 | 扬州大学 | Internal boring combined turning tool |
| CN101439457A (en) * | 2007-11-22 | 2009-05-27 | 上海重型机器厂有限公司 | Method for processing pressing sleeve hole of large diameter in top and bottom cross member of oil press |
| CN101850398A (en) * | 2009-03-31 | 2010-10-06 | 上海重型机器厂有限公司 | Machining method and cutter head of support tube in large-scale track forging manipulator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624620A (en) * | 2016-11-07 | 2017-05-10 | 武汉船用机械有限责任公司 | Processing method for large suspension bridge splay saddle |
| CN108188446A (en) * | 2018-03-08 | 2018-06-22 | 何胜保 | Casting cabin casts hole prosthetic device and casting hole restorative procedure |
| CN108188446B (en) * | 2018-03-08 | 2023-12-22 | 济源市丰源机械制造有限公司 | Cabin casting hole repairing device and casting hole repairing method |
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Application publication date: 20140618 |