CN110293239B - Method for processing transmission gear hole system of medium-speed diesel engine frame - Google Patents
Method for processing transmission gear hole system of medium-speed diesel engine frame Download PDFInfo
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- CN110293239B CN110293239B CN201910648778.6A CN201910648778A CN110293239B CN 110293239 B CN110293239 B CN 110293239B CN 201910648778 A CN201910648778 A CN 201910648778A CN 110293239 B CN110293239 B CN 110293239B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 238000003754 machining Methods 0.000 claims abstract description 23
- 238000003801 milling Methods 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 14
- 239000012208 gear oil Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
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Abstract
The invention discloses a method for processing a transmission gear hole system of a rack of a medium-speed diesel engine, which comprises the following steps of: 1) the bottom surface of a diesel engine frame faces upwards, and a first special accessory is used for processing main bearing holes of all gears; 2) the top surface of the diesel engine frame faces upwards, and a second special accessory is used for processing oil injection camshaft holes of all gears; 3) processing exhaust camshaft holes of all gears by using a second special accessory; 4) finding out the actual position coordinates of the oil injection camshaft hole and the exhaust camshaft hole by using a third special accessory, calculating the coordinate value of the carrier gear hole, and then processing the carrier gear hole by using the third special accessory; 5) and calculating the coordinate value of the middle gear hole by taking the gap bridge gear hole and the main bearing hole as the reference, and machining the middle gear hole by using a third special accessory. The invention has the advantages of short auxiliary time, high working efficiency, low labor intensity, small accumulated errors of clamping and alignment and small processing errors, and ensures the precision of the positioning size among the holes, thereby ensuring the processing quality of products.
Description
Technical Field
The invention relates to a numerical control machining method of a medium-speed diesel engine rack, in particular to a machining method of a transmission gear hole system on the medium-speed diesel engine rack, and belongs to the technical field of numerical control machining.
Background
The processing of the hole system of the transmission gear of the rack of the marine medium-speed diesel engine is one of the key points and difficulties of the processing of the rack. The hole system of the transmission gear is mainly used for installing a transmission gear set, the crankshaft drives the transmission gear set, the transmission gear set drives the exhaust camshaft and the oil injection camshaft to work, gear gaps of the transmission gear set, the crankshaft gear and the camshaft gear are different, and positioning sizes of holes are related to each other, so that the requirement on the position size precision of the hole system of the transmission gear is very high, and the processing difficulty is further caused. As shown in fig. 1, the transmission gear hole system of the diesel engine frame mainly comprises a multi-gear main bearing hole 1, a multi-gear oil injection camshaft hole 2, a multi-gear exhaust camshaft hole 3, a first-gear bridge gear hole 4 and a first-gear middle gear hole 5. The traditional transmission gear hole system is processed by a numerical control horizontal boring and milling machine, multiple times of clamping and positioning are needed during processing, multiple stations can finish aligning reference for multiple times, the auxiliary time is long, the working efficiency is low, the labor intensity is high, the accumulated error of clamping and aligning is large, the positioning size precision among holes cannot be ensured frequently due to the error generated in the processing process, and the product processing quality is extremely unstable.
Disclosure of Invention
The invention aims to provide a method for machining a transmission gear hole system of a rack of a medium-speed diesel engine, which is convenient to operate, high in machining efficiency and small in machining error.
The invention is realized by the following technical scheme:
a method for processing a transmission gear hole system of a rack of a medium-speed diesel engine comprises the following steps:
1) processing a main bearing hole: the bottom surface of a diesel engine frame is upward, the diesel engine frame is clamped and positioned on a workbench of a numerical control gantry boring and milling machine, meanwhile, a first special accessory is installed on a main shaft of a machine tool, the machine tool is started, and main bearing holes of all gears are sequentially processed by utilizing the first special accessory;
2) processing an oil injection camshaft hole: turning the diesel engine frame 180 degrees, enabling the top surface of the diesel engine frame to be upward, clamping and positioning the diesel engine frame on a machine tool workbench, simultaneously replacing a first special accessory on a main shaft of the machine tool with a second special accessory, starting the machine tool, and sequentially processing oil injection camshaft holes of all gears from the free end of the frame to the flywheel end direction by using the second special accessory with the axis of a main bearing hole as a reference;
3) processing an exhaust camshaft hole: keeping the working position of a diesel engine frame unchanged, rotating a second special accessory for 180 degrees, and sequentially processing exhaust camshaft holes from the free end of the frame to the direction of a flywheel end by taking a main bearing hole as a reference;
4) processing a gap bridge gear hole: keeping the working position of the diesel engine frame unchanged, replacing the second special accessory with a third special accessory, finding out the actual position coordinates of the oil injection camshaft hole and the exhaust camshaft hole by using the third special accessory, calculating the coordinate value of the carrier gear hole through a trigonometric function, and then processing the carrier gear hole by using the third special accessory;
5) processing a middle gear hole: keeping the working position of the diesel engine frame unchanged, calculating the coordinate value of the middle gear hole by a trigonometric function by taking the carrier gear hole and the main bearing hole as the reference, and machining the middle gear hole by using a third special accessory, thus finishing the machining of the transmission gear hole system on the frame.
The object of the invention is further achieved by the following technical measures.
In the method for processing the transmission gear hole system of the medium-speed diesel engine frame, in each step, the axes of the main bearing hole, the oil injection camshaft hole, the exhaust camshaft hole, the carrier gear hole and the intermediate gear hole are respectively perpendicular to the axis of the machine tool main shaft.
In the processing method of the transmission gear hole system of the medium-speed diesel engine frame, in step 2) or step 3), the second special accessory can be used for bidirectionally mounting the cutter.
In the method for processing the transmission gear hole system of the rack of the medium-speed diesel engine, in the step 4) and the step 5), the coordinate values of the carrier gear hole and the intermediate gear hole are calculated by a numerical control machine, and the actual position coordinates of the main bearing hole, the oil injection camshaft hole and the exhaust camshaft hole are input values.
In the method for processing the transmission gear hole system of the rack of the medium-speed diesel engine, during processing, the axis of the first special accessory is respectively superposed with the axis of each gear main bearing hole, the axis of the second special accessory is respectively superposed with the axis of each gear oil injection camshaft hole and each gear exhaust camshaft hole, and the axis of the third special accessory is respectively superposed with the axes of the carrier gear hole and the middle gear hole.
The numerical control gantry boring and milling machine is adopted to process the transmission gear hole system of the rack, the whole processing process can finish the processing of the transmission gear hole system only by clamping two stations twice, the auxiliary time is short, the working efficiency is high, the labor intensity is low, the accumulated error of clamping and alignment is small, the processing error is small, and the precision of the positioning size among the holes is ensured, so that the processing quality of products is ensured. The gap bridge gear hole and the middle gear hole are positioned by automatically calculating coordinate values through a machine tool, so that errors caused by human factors are avoided, and the positioning precision of the two holes is further improved.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a transmission gear hole system of a diesel engine frame;
FIG. 2 is a schematic view of the present invention for machining a main bearing hole;
FIG. 3 is a schematic view showing the structure of the injection camshaft hole of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
The processing method of the transmission gear hole system of the medium-speed diesel engine frame comprises the following steps:
1) machining a main bearing hole 1: as shown in fig. 2, the bottom surface of a diesel engine frame 6 is upward, the diesel engine frame is clamped and positioned on a workbench of a numerical control gantry boring and milling machine 7, the axis of a main bearing hole 1 on the frame 6 is vertical to the axis of a machine tool main shaft, meanwhile, a first special accessory 8 is arranged on the machine tool main shaft, the machine tool is started, the main bearing holes 1 of all gears are sequentially processed by utilizing the first special accessory 8, and during processing, the axis of the first special accessory 8 is respectively superposed with the axis of the main bearing hole 1 of each gear;
2) machining an oil injection camshaft hole 2: as shown in fig. 3, the diesel engine frame 6 is turned over by 180 degrees, the top surface of the diesel engine frame 6 faces upwards, the diesel engine frame 6 is clamped and positioned on a machine tool workbench, the axis of the oil injection camshaft hole 2 is vertical to the axis of a machine tool spindle, and meanwhile, a first special accessory 8 on the machine tool spindle is replaced by a second special accessory 9. The axis of the main bearing hole 1 is taken as a reference, the position of the oil injection camshaft hole 2 is aligned, a machine tool is started, the oil injection camshaft holes 2 of all gears are sequentially processed from the free end of the machine frame 6 to the direction of the flywheel end by utilizing a second special accessory 9, the axis of the second special accessory 9 is respectively superposed with the axis of the oil injection camshaft holes 2 of all gears during processing, and the second special accessory 9 can be used for bidirectionally installing a cutter;
3) machining the exhaust camshaft hole 3: keeping the working position of a diesel engine frame 6 unchanged, enabling the axis of an exhaust camshaft hole 3 to be vertical to the axis of a machine tool spindle at the moment, rotating a second special accessory 9 by 180 degrees, moving the second special accessory to one side of the exhaust camshaft hole 3 of the frame, aligning the position of the exhaust camshaft hole 3 by taking a main bearing hole 1 as a reference, starting the machine tool, sequentially machining the exhaust camshaft holes 3 of all gears from the free end of the frame 6 to the flywheel end direction, and enabling the axis of the second special accessory 9 to coincide with the axis of the exhaust camshaft holes 3 of all gears respectively during machining;
4) machining a gap bridge gear hole 4: keeping the station of the diesel engine frame 6 unchanged, and at the moment, enabling the axis of the gap bridge gear hole 4 to be vertical to the axis of the machine tool spindle, and replacing the second special accessory 9 with a third special accessory. Because small errors can be generated in the processing process of the oil injection camshaft hole 2 and the exhaust camshaft hole 3, when the carrier gear hole 4 is processed, the actual position coordinates of the oil injection camshaft hole 2 and the exhaust camshaft hole 3 are found out by using a third special accessory, the error influence is eliminated, the coordinates of the carrier gear hole 4 are calculated through a trigonometric function, then the carrier gear hole 4 is processed by using the third special accessory, and the axis of the third special accessory is superposed with the axis of the carrier gear hole 4 during processing;
5) machining a middle gear hole 5: the working position of the diesel engine frame 6 is still kept unchanged, and the axis of the middle gear hole 5 is vertical to the axis of the machine tool spindle. And (3) calculating the coordinate value of the middle gear hole 5 by using the carrier gear hole 4 and the main bearing hole 1 as the reference through a trigonometric function, machining the middle gear hole 5 by using a third special accessory, wherein the axis of the third special accessory is superposed with the axis of the middle gear hole 5 during machining, and thus finishing machining of a transmission gear hole system on the rack 6.
In the step 4) and the step 5), the coordinate values of the carrier gear hole 4 and the intermediate gear hole 5 are calculated by a numerical control machine, and the actual position coordinates of the main bearing hole 1, the oil injection camshaft hole 2 and the exhaust camshaft hole 3 are input values.
In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (5)
1. A method for processing a transmission gear hole system of a rack of a medium-speed diesel engine is characterized by comprising the following steps:
1) processing a main bearing hole: the bottom surface of a diesel engine frame is upward, the diesel engine frame is clamped and positioned on a workbench of a numerical control gantry boring and milling machine, meanwhile, a first special accessory is installed on a main shaft of a machine tool, the machine tool is started, and main bearing holes of all gears are sequentially processed by utilizing the first special accessory;
2) processing an oil injection camshaft hole: turning the diesel engine frame 180 degrees, enabling the top surface of the diesel engine frame to be upward, clamping and positioning the diesel engine frame on a machine tool workbench, simultaneously replacing a first special accessory on a main shaft of the machine tool with a second special accessory, starting the machine tool, and sequentially processing oil injection camshaft holes of all gears from the free end of the frame to the flywheel end direction by using the second special accessory with the axis of a main bearing hole as a reference;
3) processing an exhaust camshaft hole: keeping the working position of a diesel engine frame unchanged, rotating a second special accessory for 180 degrees, and sequentially processing exhaust camshaft holes from the free end of the frame to the direction of a flywheel end by taking a main bearing hole as a reference;
4) processing a gap bridge gear hole: keeping the working position of the diesel engine frame unchanged, replacing the second special accessory with a third special accessory, finding out the actual position coordinates of the oil injection camshaft hole and the exhaust camshaft hole by using the third special accessory, calculating the coordinate value of the carrier gear hole through a trigonometric function, and then processing the carrier gear hole by using the third special accessory;
5) processing a middle gear hole: keeping the working position of the diesel engine frame unchanged, calculating the coordinate value of the middle gear hole by a trigonometric function by taking the carrier gear hole and the main bearing hole as the reference, and machining the middle gear hole by using a third special accessory, thus finishing the machining of the transmission gear hole system on the frame.
2. The method for processing the transmission gear hole system of the rack of the medium speed diesel engine as claimed in claim 1, characterized in that: in each step, the axes of the main bearing hole, the oil injection camshaft hole, the exhaust camshaft hole, the intermediate gear hole and the middle gear hole are respectively vertical to the axis of the machine tool main shaft.
3. The method for processing the transmission gear hole system of the rack of the medium speed diesel engine as claimed in claim 1, characterized in that: in step 2) or step 3), the second special accessory can be mounted in a bidirectional mode.
4. The method for processing the transmission gear hole system of the rack of the medium speed diesel engine as claimed in claim 1, characterized in that: in the step 4) and the step 5), the coordinate values of the intermediate gear hole and the intermediate gear hole are calculated by a numerical control machine, and the actual position coordinates of the main bearing hole, the oil injection camshaft hole and the exhaust camshaft hole are input values.
5. The method for processing the transmission gear hole system of the rack of the medium speed diesel engine as claimed in claim 1, characterized in that: during machining, the axis of the first special accessory is respectively superposed with the axis of each gear of main bearing hole, the axis of the second special accessory is respectively superposed with the axis of each gear of oil injection camshaft hole and each gear of exhaust camshaft hole, and the axis of the third special accessory is respectively superposed with the axis of the intermediate gear hole and the axis of the intermediate gear hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910648778.6A CN110293239B (en) | 2019-07-18 | 2019-07-18 | Method for processing transmission gear hole system of medium-speed diesel engine frame |
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| CN201910648778.6A CN110293239B (en) | 2019-07-18 | 2019-07-18 | Method for processing transmission gear hole system of medium-speed diesel engine frame |
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| CN110293239A CN110293239A (en) | 2019-10-01 |
| CN110293239B true CN110293239B (en) | 2020-05-12 |
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| CN112658308B (en) * | 2020-12-15 | 2022-06-24 | 广西玉柴机器股份有限公司 | Method for machining camshaft holes from two ends by using measuring head pin correcting holes |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003251508A (en) * | 2002-03-01 | 2003-09-09 | Muraki:Kk | Reference hole drilling machine |
| CN1762650A (en) * | 2005-11-15 | 2006-04-26 | 潍柴动力股份有限公司 | Diesel cylinder body positioning method |
| CN101147987A (en) * | 2007-11-06 | 2008-03-26 | 河南柴油机重工有限责任公司 | Diesel engine body high-precision multi-speed shaft hole processing method and processing device |
| CN101158863A (en) * | 2007-11-20 | 2008-04-09 | 中国北车集团北京二七机车厂有限责任公司 | Accurate positioning processing method of IC engine airframe intermediary hole |
| CN101468402A (en) * | 2007-12-26 | 2009-07-01 | 广西玉柴机器股份有限公司 | Technological method of fine boring large-sized diesel engine cylinder porous series |
| CN101758421A (en) * | 2010-01-13 | 2010-06-30 | 上海中船三井造船柴油机有限公司 | Benchmark integration processing method and multi-directional locating block thereof |
| JP4543329B2 (en) * | 2005-09-21 | 2010-09-15 | マツダ株式会社 | Engine front structure |
| CN102528134A (en) * | 2011-12-30 | 2012-07-04 | 合肥熔安动力机械有限公司 | Opposite cutter machining method for inclined half face of main bearing hole of diesel engine for vessel |
| CN203906107U (en) * | 2014-05-07 | 2014-10-29 | 广西玉柴机器股份有限公司 | Combined type air cylinder cover and internal combustion engine body |
| CN105598742A (en) * | 2016-03-07 | 2016-05-25 | 潍柴重机股份有限公司 | Method for setting machining original points for workpieces |
| CN106378468A (en) * | 2016-12-08 | 2017-02-08 | 陕西启源科技发展有限责任公司 | Repairing method of diesel engine body benchmark main bearing hole |
| CN106695359A (en) * | 2015-11-15 | 2017-05-24 | 宁夏际华环境安全科技有限公司 | Cylinder block part hole machining tool |
| CN207824010U (en) * | 2018-02-12 | 2018-09-07 | 山东大柴缸体缸盖股份有限公司 | A kind of tooling of processing cylinder block axis hole |
| CN109048353A (en) * | 2018-08-24 | 2018-12-21 | 中船动力有限公司 | Diesel engine base base bearing hole processing tooling and method |
-
2019
- 2019-07-18 CN CN201910648778.6A patent/CN110293239B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003251508A (en) * | 2002-03-01 | 2003-09-09 | Muraki:Kk | Reference hole drilling machine |
| JP4543329B2 (en) * | 2005-09-21 | 2010-09-15 | マツダ株式会社 | Engine front structure |
| CN1762650A (en) * | 2005-11-15 | 2006-04-26 | 潍柴动力股份有限公司 | Diesel cylinder body positioning method |
| CN101147987A (en) * | 2007-11-06 | 2008-03-26 | 河南柴油机重工有限责任公司 | Diesel engine body high-precision multi-speed shaft hole processing method and processing device |
| CN101158863A (en) * | 2007-11-20 | 2008-04-09 | 中国北车集团北京二七机车厂有限责任公司 | Accurate positioning processing method of IC engine airframe intermediary hole |
| CN101468402A (en) * | 2007-12-26 | 2009-07-01 | 广西玉柴机器股份有限公司 | Technological method of fine boring large-sized diesel engine cylinder porous series |
| CN101758421A (en) * | 2010-01-13 | 2010-06-30 | 上海中船三井造船柴油机有限公司 | Benchmark integration processing method and multi-directional locating block thereof |
| CN102528134A (en) * | 2011-12-30 | 2012-07-04 | 合肥熔安动力机械有限公司 | Opposite cutter machining method for inclined half face of main bearing hole of diesel engine for vessel |
| CN203906107U (en) * | 2014-05-07 | 2014-10-29 | 广西玉柴机器股份有限公司 | Combined type air cylinder cover and internal combustion engine body |
| CN106695359A (en) * | 2015-11-15 | 2017-05-24 | 宁夏际华环境安全科技有限公司 | Cylinder block part hole machining tool |
| CN105598742A (en) * | 2016-03-07 | 2016-05-25 | 潍柴重机股份有限公司 | Method for setting machining original points for workpieces |
| CN106378468A (en) * | 2016-12-08 | 2017-02-08 | 陕西启源科技发展有限责任公司 | Repairing method of diesel engine body benchmark main bearing hole |
| CN207824010U (en) * | 2018-02-12 | 2018-09-07 | 山东大柴缸体缸盖股份有限公司 | A kind of tooling of processing cylinder block axis hole |
| CN109048353A (en) * | 2018-08-24 | 2018-12-21 | 中船动力有限公司 | Diesel engine base base bearing hole processing tooling and method |
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Address after: 212211 No. 402, Changjiang Road, Zhenjiang City, Jiangsu Province Patentee after: China Shipbuilding Power Zhenjiang Co.,Ltd. Address before: 402 Changjiang Road, Runzhou District, Zhenjiang City, Jiangsu Province Patentee before: CSSC MARINE POWER Co.,Ltd. |