CN108748064B - Rapid loading correction method of large diesel engine frame on gantry milling machine - Google Patents
Rapid loading correction method of large diesel engine frame on gantry milling machine Download PDFInfo
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- CN108748064B CN108748064B CN201810640302.3A CN201810640302A CN108748064B CN 108748064 B CN108748064 B CN 108748064B CN 201810640302 A CN201810640302 A CN 201810640302A CN 108748064 B CN108748064 B CN 108748064B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H7/00—Marking-out or setting-out work
- B25H7/04—Devices, e.g. scribers, for marking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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Abstract
A quick loading correction method of a large diesel engine frame on a gantry milling machine comprises the following steps: the frame adopts a laser reference marking method to mark X, Y, Z coordinate processing lines, waist lines, workpiece center lines and workpiece zero reference lines before loading, and further adopts technical measures of adopting a milling table top to mark lines and a milling positioning groove on a numerical control planer, installing a positioning support stop block, a positioning key and a reference feeler block, placing an adjusting cushion block, a correcting block and a reference measuring block and laser marking of the frame, thereby ensuring that the frame is quickly corrected by loading and finishing coordinate setting. The invention has the advantages of simple operation, safety, high efficiency and convenient adjustment, obtains the beneficial effects of reducing the time for correcting the frame in the turning process and reducing the labor intensity of workers, and is particularly suitable for correcting, positioning and setting coordinates of the large diesel engine frame and similar large parts in the turning process on the numerical control milling machine.
Description
Technical Field
The invention relates to a manufacturing process of large diesel engine parts, in particular to a quick loading correction method of a large diesel engine frame on a gantry milling machine, belonging to the technical field of diesel engine manufacturing.
Background
The frame is one of important parts of a large marine diesel engine, is a welded structural part, and has a complex structure, a large size and a large weight. The frame has upper plane, middle plane, lower plane, guide plate, side guide plate, shaft head hole, door frame, etc. and the frame has inner cavity with parallel or perpendicular guide plate, side guide plate and transverse partition board.
The original boarding correction method is that a frame is boarded in a square way, and alignment and leveling of machining allowance are measured by combining a pull meter to set a zero position of a machining reference according to the original sample punching mark of a blank; the original method has the problems of troublesome correction and adjustment, time and labor waste, high climbing operation risk, large error, more turnover times of the frame, high labor intensity of workers and the like.
Disclosure of Invention
The invention aims to overcome the defects of the original method, provides an efficient, safe and accurate method for quickly correcting the large diesel engine frame on the gantry milling machine, quickly and conveniently realizes the leveling, straightening and coordinate setting of the frame, and achieves the effects of accurate position, high operation efficiency, reduction of the frame turning times and avoidance of the risk of climbing operation.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a quick boarding correction method for a large diesel engine rack on a gantry milling machine is characterized in that the rack is a welded structural part and comprises the following steps: the frame adopts a laser reference marking method to mark X, Y, Z coordinate processing lines, waist lines, workpiece center lines and workpiece zero reference lines before loading, and further adopts technical measures of adopting a milling table top to mark lines and a milling positioning groove on a numerical control planer, installing a positioning support stop block, a positioning key and a reference feeler block, placing an adjusting cushion block, a correcting block and a reference measuring block and laser marking of the frame, ensuring the rapid correction of the frame loading and completing the coordinate setting;
the quick boarding correction method comprises the following steps:
1) on the table top of the numerical control milling machine, equidistant and parallel positioning grooves are milled in the X direction according to a set size and are fully distributed on the table top, equidistant and parallel lines are engraved in the Y direction according to a set size and are fully distributed on the table top, and parallel and equidistant positioning grooves in the center are milled in the Y direction;
2) a laser reference scribing method is adopted before the machine frame is loaded, and a machining line, a Z-direction waist line, a Y-direction workpiece center line and an X-direction zero reference line in the X, Y, Z coordinate direction are scribed;
3) the positioning key, the positioning support stop block, the correcting block, the reference feeler block, the reference measuring block and the adjusting cushion block are arranged at corresponding positions according to the setting requirements;
4) starting a travelling crane to place the rack flat crane on the table top of the numerical control milling machine, manually matching to move the rack when the rack is in contact with the adjusting cushion block and is not loosely hung, adjusting the positioning support stop block, aligning the Y-direction workpiece center line of the rack to the table top center line and the reference feeler block center line of the upper gantry milling machine in parallel, adjusting the adjusting cushion block by adopting a method of only descending and not rising to level the rack, adjusting the adjusting cushion block, the correcting block and the positioning support stop block, and combining the rack to perform scribing, leveling and straightening, then loosely hanging, compacting and fastening the rack;
5) setting X, Y coordinate zero position of the workpiece by combining an X-direction positioning groove, a Y-direction scribing line and a reference measuring block of the numerical control milling table according to the X-direction zero position datum line and the Y-direction workpiece center line of the rack, measuring the distance between the numerical control milling table and the rack plane scribing line, and transferring and setting the Z coordinate zero position by combining the reference tool setting block through a coordinate offset program.
Furthermore, the X-direction positioning groove is combined with the reference measuring block, the X-direction zero-position reference line of the rack and the reference feeler block to measure and finish X-direction coordinate setting, the Y-direction reticle is combined with the Y-direction workpiece center line of the rack and the reference feeler block to measure and finish Y-direction coordinate setting, and the Z-direction waist line of the rack is combined with the reference feeler block to measure and finish Z-direction coordinate setting.
And further, according to the technical measure of laser scribing of the machine frame, the reference tool setting block is combined to perform accurate tool setting, and coordinate setting is completed.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts the technical scheme of scribing a milling table surface, milling a positioning groove, installing a positioning support stop block, a positioning key, a reference feeler block, placing a correction block and a reference measuring block, laser scribing a rack, a coordinate offset program and the like on the numerical control gantry milling machine, thereby ensuring the quick correction and coordinate setting of the rack on the vehicle. The method is simple to operate, avoids climbing operation, reduces the turnover frequency of the frame, reduces the labor intensity of workers, realizes quick and convenient operations such as leveling, straightening, coordinate setting and the like, and has the advantages of accurate position, high operation efficiency, time saving, safety and convenience.
The method is particularly suitable for the turning correction, the positioning and the coordinate setting of large diesel engine frames and similar large parts on a numerical control milling machine.
Drawings
Fig. 1 is an isometric view of the overall arrangement of the cart on the frame.
Fig. 2 is a front view of the overall arrangement of the carriages.
Fig. 3 is a right side view of the overall arrangement of the cart on the rack.
Fig. 4 is a method flow diagram.
Detailed Description
The invention is further illustrated with reference to the following figures and specific examples, which should not be taken to limit the scope of the invention.
The invention relates to a quick loading correction method of a large diesel engine frame on a gantry milling machine, which comprises the following steps: the frame adopts laser benchmark marking method to mark X, Y, Z coordinate processing line, waist line, work piece center line and work piece zero-position datum line before going up, and further adopts the technical measures of milling table surface line marking, milling positioning groove, installing and positioning support stop block, positioning key, benchmark feeler block, placing and adjusting cushion block, correcting block, benchmark measuring block and frame laser marking on the numerical control milling machine, thereby ensuring the frame to go up the vehicle to correct quickly and completing the coordinate setting.
The flow of the method is shown in fig. 4, and specifically comprises the following steps:
1. referring to fig. 1, according to a set size, X-direction positioning slots 2 are milled on a numerical control milling table top 1 in an equidistant (315mm) parallel manner and are fully distributed on the table top, parallel lines in an equidistant (300mm) manner are engraved in a Y direction and are fully distributed on the table top, and Y-direction positioning slots 3 are milled in a parallel manner and are equidistant from the center in the Y direction, so that the machine frame can be used in various machine types.
2. Referring to fig. 2 and 3, the frame 9 is a welded structural member, and a machining line in the direction X, Y, Z, a waistline a in the Z direction, a workpiece center line I in the Y direction and a zero reference line b in the X direction are marked before the frame is loaded.
3. Referring to fig. 1, the positioning support stopper 7, the positioning key 6, the calibration block 10, the reference feeler block 5, the reference measuring block 11, and the adjusting pad block 8 are disposed at corresponding positions according to the setting requirements.
4. Referring to fig. 1, 2 and 3, a traveling crane is started to horizontally hang the rack 9 on the table top 1 of the numerical control milling machine, when the rack 9 contacts the adjusting cushion block 8, the rack 9 is not loosely hung, the adjusting bolt of the positioning support stop 7 is adjusted by manually matching to move the rack 9, the correcting blocks 10 at two ends are aligned with the central line 4 of the table top of the numerical control milling machine for reference, the central line I of the rack is parallel to the central line 4 of the upper table top and the central line of the reference aligning block 5, the adjusting cushion block 8 is adjusted by adopting a method of only descending and not ascending, the rack 9 is scribed and leveled along the Z-direction plane, the adjusting cushion block 10, the adjusting cushion block 8 and the positioning support stop 7 are combined with the rack to be scribed and leveled, then the rack is loosely hung, the Z-direction waist line a of the rack 9 is retested.
5. Referring to fig. 1, 2 and 3, according to an X-direction zero position datum line b and a Y-direction workpiece center line I of a rack 9, in combination with an X-direction positioning groove 2 and a Y-direction marking and reference measuring block 11 of a numerical control milling table board 1, the coordinates of the workpiece are measured, the zero position of the X, Y coordinate of the workpiece is set, the marking distance from the numerical control milling table board 1 to the plane of the rack is measured, in combination with a reference tool setting block 5, the Z-axis coordinate of the workpiece is measured, and an offset program is provided to transfer and set the zero position of the Z-axis.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The scope of the invention as claimed should also include obvious modifications and alternatives to the present invention.
The invention overcomes the defects of the original method, achieves the effects of simple operation, safety, high efficiency and convenient adjustment, obtains the beneficial effects of reducing the correction time of the frame for getting on the vehicle and reducing the labor intensity of workers, and is suitable for the rapid correction and the coordinate setting of the frame of the large diesel engine and the large parts for getting on the vehicle.
Claims (3)
1. A quick boarding correction method for a large diesel engine rack on a gantry milling machine is characterized in that the rack is a welded structural part and comprises the following steps: the frame adopts a laser reference marking method to mark X, Y, Z coordinate processing lines, waist lines, workpiece center lines and workpiece zero reference lines before loading, and further adopts technical measures of adopting a milling table top to mark lines and a milling positioning groove on a numerical control planer, installing a positioning support stop block, a positioning key and a reference feeler block, placing an adjusting cushion block, a correcting block and a reference measuring block and laser marking of the frame, ensuring the rapid correction of the frame loading and completing the coordinate setting;
the quick boarding correction method comprises the following steps:
1) on the table top of the numerical control milling machine, equidistant and parallel positioning grooves are milled in the X direction according to a set size and are fully distributed on the table top, equidistant and parallel lines are engraved in the Y direction according to a set size and are fully distributed on the table top, and parallel and equidistant positioning grooves in the center are milled in the Y direction;
2) a laser reference scribing method is adopted before the machine frame is loaded, and a machining line, a Z-direction waist line, a Y-direction workpiece center line and an X-direction zero reference line in the X, Y, Z coordinate direction are scribed;
3) the positioning key, the positioning support stop block, the correcting block, the reference feeler block, the reference measuring block and the adjusting cushion block are arranged at corresponding positions according to the setting requirements;
4) starting a travelling crane to place the rack flat crane on the table top of the numerical control milling machine, manually matching to move the rack when the rack is in contact with the adjusting cushion block and is not loosely hung, adjusting the positioning support stop block, aligning the Y-direction workpiece center line of the rack to the table top center line and the reference feeler block center line of the upper gantry milling machine in parallel, adjusting the adjusting cushion block by adopting a method of only descending and not rising to level the rack, adjusting the adjusting cushion block, the correcting block and the positioning support stop block, and combining the rack to perform scribing, leveling and straightening, then loosely hanging, compacting and fastening the rack;
5) setting X, Y coordinate zero position of the workpiece by combining an X-direction positioning groove, a Y-direction scribing line and a reference measuring block of the numerical control milling table according to the X-direction zero position datum line and the Y-direction workpiece center line of the rack, measuring the distance between the numerical control milling table and the rack plane scribing line, and transferring and setting the Z coordinate zero position by combining the reference tool setting block through a coordinate offset program.
2. The method for rapidly correcting the large diesel engine frame on the gantry milling machine according to claim 1, wherein the method comprises the following steps: the X-direction positioning groove is combined with the reference measuring block, an X-direction zero-position datum line of the rack and a reference feeler block to measure and finish X-direction coordinate setting, the Y-direction scribing line is combined with the Y-direction workpiece center line of the rack and the reference feeler block to measure and finish Y-direction coordinate setting, and the Z-direction waist line of the rack is combined with the reference feeler block to measure and finish Z-direction coordinate setting.
3. The method for rapidly correcting the large diesel engine frame on the gantry milling machine according to claim 1, wherein the method comprises the following steps: and according to the technical measure of the laser scribing of the machine frame, combining the reference tool setting block to perform accurate tool setting to complete coordinate setting.
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| CN201810640302.3A CN108748064B (en) | 2018-06-21 | 2018-06-21 | Rapid loading correction method of large diesel engine frame on gantry milling machine |
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| CN201810640302.3A CN108748064B (en) | 2018-06-21 | 2018-06-21 | Rapid loading correction method of large diesel engine frame on gantry milling machine |
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| CN108748064B true CN108748064B (en) | 2021-07-06 |
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| CN110561057A (en) * | 2019-10-21 | 2019-12-13 | 上海中船三井造船柴油机有限公司 | Method for machining sectional type frame connecting part of marine diesel engine |
| CN113199255B (en) * | 2021-04-15 | 2023-07-25 | 佛山市镭科智能设备有限公司 | Intelligent processing method and device for profile and electronic equipment for profile processing |
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| JP4717279B2 (en) * | 2001-08-02 | 2011-07-06 | 本田技研工業株式会社 | Work positioning method |
| CN101618516A (en) * | 2009-07-22 | 2010-01-06 | 沪东重机有限公司 | Rapid positioning device for processing heavy part on milling planer and processing method |
| CN104097195B (en) * | 2014-07-03 | 2016-08-31 | 沪东重机有限公司 | 3 D stereo scribble method for large-scale diesel engine frame |
| CN104924118B (en) * | 2015-06-23 | 2017-07-11 | 宁夏共享模具有限公司 | A kind of frock and its application method for being applied to processing V-type diesel frame |
| CN104999121B (en) * | 2015-08-07 | 2017-05-03 | 上海中船三井造船柴油机有限公司 | Method and tool for machining rack guide plate |
| CN105643586B (en) * | 2016-03-22 | 2017-09-19 | 上海中船三井造船柴油机有限公司 | Laser datum scribble method for marine low speed diesel engine frame |
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