CN105414785A - Manufacturing method for rack of marine low-speed diesel engine - Google Patents
Manufacturing method for rack of marine low-speed diesel engine Download PDFInfo
- Publication number
- CN105414785A CN105414785A CN201510906939.9A CN201510906939A CN105414785A CN 105414785 A CN105414785 A CN 105414785A CN 201510906939 A CN201510906939 A CN 201510906939A CN 105414785 A CN105414785 A CN 105414785A
- Authority
- CN
- China
- Prior art keywords
- welding
- frame
- stage casing
- rack
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000003466 welding Methods 0.000 claims abstract description 174
- 238000000034 method Methods 0.000 claims abstract description 36
- 230000032683 aging Effects 0.000 claims abstract description 5
- 238000000137 annealing Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 230000035882 stress Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 12
- 238000005498 polishing Methods 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 230000002596 correlated effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
Abstract
The invention discloses a manufacturing method for a rack of a marine low-speed diesel engine. The manufacturing method comprises the following steps that firstly, the rack is divided into a rack head segment module, a rack middle segment module and a rack tail segment module, wherein the rack middle segment module comprises a plurality of rack middle segments which are the same in structure and size; secondly, according to the design size of the rack, all part plates of all the rack segments are cut for blanking, then grooves are processed and welded, and finally the plates are stored in a classified mode; thirdly, a CO2 welding method is adopted for welding the rack head segment module, the rack middle segment module and the rack tail segment module step by step respectively; fourthly, the rack head segment module, the rack middle segment module and the rack tail segment module are jointed and folded; and fifthly, annealing treatment is finally conducted on connection weld joints to reduce residual stress produced by welding of connection areas, and after overall heat treatment on the rack is completed, aging treatment and flaw detection are conducted to make the rack reach all design standards. The manufacturing method has the advantages of being high in production efficiency and good in interchangeability and universality.
Description
Technical field
The invention belongs to Diesel Engine Technique Field, particularly a kind of modularization welding of argosy low-speed diesel engine frame, the manufacture method of overall spicing forming type.
Background technology
As the important component part of diesel engine, frame plays support cylinder block, forms the important function of crank box with support in diesel engine, and the performance of frame directly affects the reliability of diesel engine.The document being ZL02145176.1 by the patent No. discloses a kind of welding method of low-speed diesel engine frame, the welding of frame entirety is mainly completed by a series of locating hole, location iron pipe and the device such as lug, moulding bed of complexity, but the method complex operation and the uniformity of the frame produced is poor.The patent No. is that the document of ZL201010530701.8 discloses a kind of robot welding system for marine diesel frame support, the automatic soldering method of real-time tracking welding is used to replace traditional manual semi-automatic welding pattern, the method achieves the improvement of automation on bond pattern, but lack certain welding strategy, the interchangeability of production efficiency and product is lower.
There is following defect in current known technology: (1) welding process is complicated, efficiency is not high, bad with uniformity between batch frame, is not suitable for mass production manufacture.(2) do not realize the modularization of structure between frame main modular, lack interchangeability and versatility, the defect of local easily causes overall scrapping, and manufacturing cost is high.
Summary of the invention
For solving in prior art the above problem existed, the invention provides that a kind of production efficiency is high, interchangeability and the good marine low speed diesel engine frame manufacture method of versatility, concrete steps are as follows:
The first step: frame is divided into root module and frame rear module in the first root module of frame, frame, and its mid frame stage casing module comprises several structures and measure-alike frame stage casing, and described frame stage casing has interchangeability completely.Root module in frame is divided into several structures and measure-alike and there is the frame stage casing of absolute interchangeability by rational structural segmented strategy, makes the frame uniformity that finally produces better, greatly reduce product rejection rate, improve production efficiency.Can increase or reduce simultaneously the quantity in module mid frame stage casing, frame stage casing according to the difference of each diesel engine stand size, thus the diesel engine stand of more convenient production in enormous quantities different size.
Second step: all parts sheet materials of design size to each section of frame according to frame carry out cutting stock; First section of its mid frame comprises base plate, the floor on both sides, the butterfly plate at middle part, the web of below, dividing plate, the side plate of both sides and the top board at top between web and butterfly plate of bottom; Again processing welding is carried out to groove, finally carry out sheet material and sort out storage;
3rd step: adopt CO
2welding, carries out substep welding to first section of frame, frame stage casing and frame rear three modules respectively; Wherein, CO
2flow is 20 ~ 22L/min, and welding current is 300 ~ 360A, and weldingvoltage is 30 ~ 36V;
4th step: by first for frame section, frame stage casing and frame rear three modules carry out splicing and close up; In welding process, use the coaxiality error of laser collimation technology to each section of frame to test and revision;
5th step: finally carry out annealing in process to attachment weld, reduces the residual stress that join domain welding produces; Carry out Ageing Treatment and flaw detection after frame bulk heat treatmet completes, make it to reach every design standard.
Wherein, the welding step of the first root module of frame described in the 3rd step is as follows:
1) by overall structure to frame cloth tire, the flatness of welding positioner and the error of perpendicularity≤0.5mm;
2) select whole sheet materials of first section of frame, first first section of base plate is fixed on moulding bed, accurately measure base plate line and inspection line, guarantee that two lines overlap thus make it reliably to be fixed together with moulding bed;
3) start to carry out cloth weldering to two pieces of dividing plates of first section of frame after first section of base plate fixedly completes, need before welding to need welding position and foot welding height to mark clearly between dividing plate and base plate, control welding contracted quantity, welding and assembling height is 7.5mm, amount of contraction is 1mm/1000mm, ensures the squareness tolerance≤0.09mm of dividing plate simultaneously;
4) dividing plate welding is smooth by weld grinding after terminating, and carries out the welding of frame first section of floor and web, ensure its welding precision and Tolerance of Degree of position after upchecking.The while of carrying out symmetrical during welding floor, cloth weldering, ensures the precision of welding;
5) floor, web have welded and have carried out the cleaning of welding slag and the polishing of weld seam in time, carry out the welding of frame first section of side plate, ensure its welding precision and Tolerance of Degree of position after upchecking.
6) plate-side plate welding completes and carries out the cleaning of welding slag and the polishing of weld seam in time, the welding of frame first section of top board is carried out after upchecking, contacting assembling with the cylinder block of diesel engine due to after frame top board, therefore need ensure the flatness of its levelness, weld seam and the accuracy of physical dimension when welding top plate.
7) top board has welded and has carried out the cleaning of welding slag and the polishing of weld seam in time, to the inspection that physical dimension, welding performance are correlated with afterwards.
Wherein, in frame described in the 3rd step, root module adopts welding robot to carry out automatic welding, and the concrete steps of welding are as follows:
1) according to the physical dimension of each subsegment in each frame stage casing required all kinds of sheet materials sorted out and put into the feeding storehouse of sealing wire, being respectively: base plate, floor, butterfly plate, web, dividing plate, side plate and top board seven feed bins;
2) welding robot resets and sets the origin of coordinates; According to technological requirement and the position while welding in frame stage casing, actual welding track is programmed; Adopt CO
2welding, arranges welding parameter: CO
2flow: 20 ~ 22L/min, welding current: 300 ~ 360A, weldingvoltage: 30 ~ 36V;
3) a frame stage casing is welded all the other frame stage casings by identical step after completing again;
4) carry out clearing up to the weld seam in the institute's organic frame stage casing after completing and polish, butt welded seam quality is tested, and tests to the physical dimension in frame stage casing and Tolerance of Degree of position on request.
Wherein, the welding step of frame rear module described in the 3rd step is consistent with the welding step of the first root module of frame.
Wherein, the concrete steps of the 4th step are as follows:
1) clean out being used for welding the bevel for welding closed up between each parts, generating laser and the light target recipient of laser collimator are installed in erection simultaneously, and adjustment Laser emission orientation, makes laser correctly directive light target;
2) the institute's organic frame stage casing in frame in root module is carried out welding and is closed up; Each subsegment frame under frame stage casing is lifted on moulding bed, checks position error by the laser collimator set up in advance, and ensure that base plate line and inspection line overlap, make straightness error≤0.5mm; Secondly, carry out spot welding location, tentatively stage casing frame is linked together; Then carry out secondary to the position error in frame stage casing to check and revise; To be adjusted complete, full weld is carried out to all bevel for weldings, finally completes closing up of frame stage casing;
3) first section of the frame machined and the lifting of frame rear are extremely corresponded to the front and back position in frame stage casing, then use laser alignment to check the position error revising frame; That carries out overall three modules recently closes up welding; First carry out spot welding Primary Location, next carries out secondary check round-off error value, finally completes and closes up the welding of entirety.
Compared with prior art, the invention has the advantages that:
(1) mid frame of the present invention adopts modularized processing, the modularization of carrying out large aspect by first section of frame, frame stage casing and frame rear three modules collects, corresponding module is integrated by multiple little parts again simultaneously, realizes mass production and standardized production.
(2) CO is adopted when three large modules being welded
2welding, and strictly control welding parameter, ensure weldquality.And tested and revision by the coaxiality error of laser collimation technology to each section of frame, thus ensure the installation accuracy after assembling and reduce later stage polishing amount and activity time, indirectly increase work efficiency.
(3) in frame, root module adopts identical several parts composition, be convenient to mark and the allotment of the relative position transporting and lift and reduce follow-up assembling process, because each part has interchangeability, decrease product rejection rate, improve production efficiency.Can increase or reduce simultaneously the quantity in module mid frame stage casing, frame stage casing according to the difference of each diesel engine stand size, thus the diesel engine stand of more convenient production in enormous quantities different size.
(4) in root module, multiple part is carried out closing up welding in frame, carry out closing up welding after checking by utilizing laser alignment the position error revising frame, and again carry out spot welding Primary Location, the second order error between various piece can be reduced further.Carry out secondary check round-off error value afterwards, finally can complete accurately and the welding of entirety is closed up, decrease the scrappage in production process.
Accompanying drawing explanation
Fig. 1 is the structural representation of diesel engine stand in the present invention;
Fig. 2 is the top view of diesel engine stand in the present invention;
Fig. 3 is the left view of diesel engine stand in the present invention;
Fig. 4 is the stepwise schematic views of diesel engine stand in the present invention.
11, the first root module of frame, 111, base plate, 112, floor, 113, butterfly plate, 114, web, 115, dividing plate, 116, side plate, 117, top board, 21, frame stage casing A, 22, frame stage casing B, 23, frame stage casing C, 24, frame stage casing D, 25, frame stage casing E, 31, frame rear module.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further.
As Figure 1-4, the present invention mainly comprises following step:
The first step: certain type ship diesel engine stand as shown in Figure 1, Figure 2 and Figure 4, according to its version, can be segmented into: the first root module 11 of frame; Frame stage casing A21, frame stage casing B22, frame stage casing C23, frame stage casing D24 and frame stage casing E25; And frame rear module 31.Wherein, in frame, root module comprises frame stage casing A21, frame stage casing B22, frame stage casing C23, frame stage casing D24 and frame stage casing E25 five part, and due to frame stage casing A21, frame stage casing B22, frame stage casing C23, frame stage casing D24 with frame stage casing E25 five part has identical version and thus dimensional parameters has interchangeability completely.By rational structural segmented strategy, root module in frame is divided into five parts, and the structure of each part and measure-alike, makes the frame uniformity that finally produces better, greatly reduce product rejection rate, improve production efficiency.Can increase or reduce simultaneously the quantity in module mid frame stage casing, frame stage casing according to the difference of each diesel engine stand size, thus the diesel engine stand of more convenient production in enormous quantities different size.
Second step: respectively cutting stock, bevel for welding processing carried out to the sheet material in three modules and sort out storage.According to design size and the partition strategy of specifying of frame, cutting stock is carried out to all parts sheet materials of each section of frame, as shown in Figure 3, the base plate 111 of the first root module 11 of its mid frame, floor 112, butterfly plate 113, web 114, dividing plate 115, side plate 116 and top board 117.And process bevel for welding, finally carry out sheet material and sort out storage, facilitate following process to use.By being divided into multiple little parts to each module and being integrated by little parts, realize mass production and standardized production.Meanwhile, in the process of producing, get final product and do not need whole module to change if parts have flaw to change parts, having saved production cost, be also more conducive to improving the efficiency of producing.
3rd step: adopt CO
2welding, carries out substep welding to three modules respectively.Wherein, CO
2flow is 20 ~ 22L/min, and welding current is 300 ~ 360A, and weldingvoltage is 30 ~ 36V.CO is adopted during by welding three large modules
2welding, the strict welding parameter that controls adopts above-mentioned standard, ensures weldquality.
(1) frame first section of 11 welding step are as follows:
A, by overall structure to frame cloth tire, the flatness of welding positioner and the error of perpendicularity≤0.5mm.The flatness of Select Error≤0.5mm and perpendicularity can make in follow-up welding process, increase the stability of moulding bed, thus reduce product rejection rate, improve the efficiency of producing.
B, select whole sheet materials of first section of frame, first first section of base plate is fixed on moulding bed, accurately measures base plate line and inspection line, guarantee that two lines overlap thus make it reliably to be fixed together with moulding bed.After first section of base plate and moulding bed are accurately fixed together, the work for formality can play more accurate effect, decreases the error problem in subsequent production.
C, start to carry out cloth weldering to two pieces of dividing plates of first section of frame after first section of base plate fixedly completes, need before welding to need welding position and foot welding height to mark clearly between dividing plate and base plate, control welding contracted quantity, welding and assembling height is 7.5mm, amount of contraction is 1mm/1000mm, ensure the squareness tolerance≤0.09mm of dividing plate, and other form and position tolerances all reach designing requirement simultaneously.Specify the squareness tolerance of the welding and assembling height of 7.5mm, the amount of contraction of 1mm/1000mm and≤0.09mm, not only ensure and can reduce error in welding process, guarantee scrappage to drop to minimum simultaneously, decrease production cost.
After the welding of D, dividing plate terminates, weld grinding is smooth, carry out the welding of frame first section of floor and web after upchecking, ensure its welding precision and Tolerance of Degree of position.The while of carrying out symmetrical during welding floor, cloth weldering, ensures the precision of welding.Floor carries out left and right cloth weldering simultaneously and can guarantee symmetrical, can reduce the scrappage of first section of frame in follow-up welding process.
E, floor, web have welded and have carried out the cleaning of welding slag and the polishing of weld seam in time, carry out the welding of frame first section of side plate, ensure its welding precision and Tolerance of Degree of position after upchecking.
F, plate-side plate welding complete and carry out the cleaning of welding slag and the polishing of weld seam in time, the welding of frame first section of top board is carried out after upchecking, contacting assembling with the cylinder block of diesel engine due to after frame top board, therefore need ensure the flatness of its levelness, weld seam and the accuracy of physical dimension when welding top plate.
G, top board have welded and have carried out the cleaning of welding slag and the polishing of weld seam in time, to the inspection that physical dimension, welding performance are correlated with afterwards.
(2) frame stage casing A21 welds.The welding process of frame stage casing A21 can be carried out according to the method for frame first section 11, and local difference also needs to treat with a certain discrimination and ensures that every welding quality reaches expection requirement.Some other frame stage casing B22, frame stage casing C23, frame stage casing D24, frame stage casing E25 all can adopt consistent welding method to carry out mass welding, effectively improve the production efficiency of frame stage casing manufacture with this, also ensure that the interchangeability that frame stage casing A21 is good simultaneously.Because subsegment structure each under the A21 of frame stage casing is identical, welding robot is adopted to carry out automatic welding herein.Adopt robot to weld, can raise the efficiency, save time, better control simultaneously, guarantee the accuracy in welding process, product rejection rate is dropped to minimum.Its concrete steps are as follows:
A, sheet material are got the raw materials ready.According to the physical dimension of each subsegment under the A21 of frame stage casing required all kinds of sheet materials sorted out and put into the feeding storehouse of sealing wire, being respectively: base plate, floor, butterfly plate, web, dividing plate, side plate and top board seven feed bins.
B, numerical control welding.Welding robot resets and sets the origin of coordinates; According to technological requirement and the position while welding in frame stage casing, actual welding track is programmed; By robot welding, ensure that welding precision.Adopt CO simultaneously
2welding, arranges welding parameter: CO
2flow: 20 ~ 22L/min, welding current: 300 ~ 360A, weldingvoltage: 30 ~ 36V.CO is adopted during welding
2welding, strictly controls welding parameter; Adopt above-mentioned standard, ensure weldquality.
C, welding post processing and inspection.Butt welded seam carries out necessary cleaning and polishing, and butt welded seam quality is tested.And on request the physical dimension in frame stage casing and Tolerance of Degree of position are tested, guarantee product quality.
(3) frame rear 31 welds.The welding process of frame tail 31 can be carried out according to the method for frame first section 11, and local difference also needs to treat with a certain discrimination and ensures that every welding quality reaches expection requirement.
4th step: by first section, stage casing, rear three modules carry out splicing and close up.For ensureing to close up precision, in welding process, the coaxiality error of laser collimation technology to each section of frame is used to test and revision.Tested and revision by the coaxiality error of laser collimation technology to each section of frame, thus ensure the installation accuracy after assembling and reduce later stage polishing amount and activity time, indirectly improve subsequent handling operating efficiency.Concrete steps are as follows:
A, being used between each submodule is welded the bevel for welding closed up clean out, used in order to following process, meanwhile, the generating laser of laser collimator and light target recipient are installed in erection, adjust Laser emission orientation, make laser correctly directive light target.
B, frame stage casing A21, frame stage casing B22, frame stage casing C23, frame stage casing D24 and frame stage casing E25 carry out welding and close up.Each subsegment frame under frame stage casing is lifted on moulding bed, is beneficial to the laser collimator set up in advance and checks position error, ensure that base plate line and inspection line overlap simultaneously, make straightness error≤0.5mm.Secondly, carry out spot welding location, tentatively stage casing frame is linked together.Again carry out secondary to the position error in frame stage casing to check and revise.To be adjusted complete, full weld is carried out to all bevel for weldings, Multi-station synchronous can be used to weld the error reducing welding.Finally complete closing up of frame stage casing.
C, first for the frame machined section 11 and frame rear 31 lifted front and back position to corresponding to frame stage casing.Secondly use laser alignment to check and revise frame positive position degree error, make it to meet the demands.That carries out overall three large sections closes up welding.Still first carry out spot welding Primary Location, next carries out secondary check round-off error value.Finally complete and the welding of entirety is closed up.
5th step: annealing in process, Ageing Treatment and flaw detection.Finally annealing in process is carried out to attachment weld, reduce the residual stress that join domain welding produces.Carry out necessary Ageing Treatment and necessary flaw detection after frame bulk heat treatmet completes, make it to reach every design standard.
The foregoing is only embodiments of the invention, be not limited to the present invention, the present invention is especially applicable for long-range serials control.All within principle of the present invention, the equivalent replacement done, all should be included within protection scope of the present invention.The content that the present invention is not elaborated belongs to the known prior art of this professional domain technical staff.
Claims (5)
1. a marine low speed diesel engine frame manufacture method, is characterized in that: comprise the following steps:
The first step: frame is divided into root module and frame rear module in the first root module of frame, frame, and its mid frame stage casing module comprises several structures and measure-alike frame stage casing, and described frame stage casing has interchangeability completely;
Second step: all parts sheet materials of design size to each section of frame according to frame carry out cutting stock; First section of its mid frame comprises base plate, the floor on both sides, the butterfly plate at middle part, the web of below, dividing plate, the side plate of both sides and the top board at top between web and butterfly plate of bottom; Again processing welding is carried out to groove, finally carry out sheet material and sort out storage;
3rd step: adopt CO
2welding, carries out substep welding to first section of frame, frame stage casing and frame rear three modules respectively; Wherein, CO
2flow is 20 ~ 22L/min, and welding current is 300 ~ 360A, and weldingvoltage is 30 ~ 36V;
4th step: by first for frame section, frame stage casing and frame rear three modules carry out splicing and close up; In welding process, use the coaxiality error of laser collimation technology to each section of frame to test and revision;
5th step: finally carry out annealing in process to attachment weld, reduces the residual stress that join domain welding produces; Carry out Ageing Treatment and flaw detection after frame bulk heat treatmet completes, make it to reach every design standard.
2. a kind of marine low speed diesel engine frame manufacture method according to claim 1, is characterized in that: the welding step of the first root module of frame described in the 3rd step is as follows:
1) by overall structure to frame cloth tire, the flatness of welding positioner and the error of perpendicularity≤0.5mm;
2) select whole sheet materials of first section of frame, first first section of base plate is fixed on moulding bed, accurately measure base plate line and inspection line, guarantee that two lines overlap thus make it reliably to be fixed together with moulding bed;
3) start to carry out cloth weldering to two pieces of dividing plates of first section of frame after first section of base plate fixedly completes, need before welding to need welding position and foot welding height to mark clearly between dividing plate and base plate, control welding contracted quantity, welding and assembling height is 7.5mm, amount of contraction is 1mm/1000mm, ensures the squareness tolerance≤0.09mm of dividing plate simultaneously;
4) dividing plate welding is smooth by weld grinding after terminating, and carries out the welding of frame first section of floor and web, ensure its welding precision and Tolerance of Degree of position after upchecking.The while of carrying out symmetrical during welding floor, cloth weldering, ensures the precision of welding;
5) floor, web have welded and have carried out the cleaning of welding slag and the polishing of weld seam in time, carry out the welding of frame first section of side plate, ensure its welding precision and Tolerance of Degree of position after upchecking.
6) plate-side plate welding completes and carries out the cleaning of welding slag and the polishing of weld seam in time, the welding of frame first section of top board is carried out after upchecking, contacting assembling with the cylinder block of diesel engine due to after frame top board, therefore need ensure the flatness of its levelness, weld seam and the accuracy of physical dimension when welding top plate.
7) top board has welded and has carried out the cleaning of welding slag and the polishing of weld seam in time, to the inspection that physical dimension, welding performance are correlated with afterwards.
3. a kind of marine low speed diesel engine frame manufacture method according to claim 1, is characterized in that: in frame described in the 3rd step, root module adopts welding robot to carry out automatic welding, and the concrete steps of welding are as follows:
1) according to the physical dimension of each subsegment in each frame stage casing required all kinds of sheet materials sorted out and put into the feeding storehouse of sealing wire, being respectively: base plate, floor, butterfly plate, web, dividing plate, side plate and top board seven feed bins;
2) welding robot resets and sets the origin of coordinates; According to technological requirement and the position while welding in frame stage casing, actual welding track is programmed; Adopt CO
2welding, arranges welding parameter: CO
2flow: 20 ~ 22L/min, welding current: 300 ~ 360A, weldingvoltage: 30 ~ 36V;
3) a frame stage casing is welded other frame stage casings by identical step after completing again;
4) carry out clearing up to the weld seam in frame stage casings all after completing and polish, butt welded seam quality is tested, and tests to the physical dimension in frame stage casing and Tolerance of Degree of position on request.
4. according to a kind of marine low speed diesel engine frame manufacture method one of claims 1 to 3 Suo Shu, it is characterized in that: the welding step of frame rear module described in the 3rd step is consistent with the welding step of the first root module of frame.
5. a kind of marine low speed diesel engine frame manufacture method according to claim 4, is characterized in that: the concrete steps of the 4th step are as follows:
1) clean out being used for welding the bevel for welding closed up between each parts, generating laser and the light target recipient of laser collimator are installed in erection simultaneously, and adjustment Laser emission orientation, makes laser correctly directive light target;
2) carry out welding to frame stage casing each in root module in frame to close up; Each subsegment frame under frame stage casing is lifted on moulding bed, checks position error by the laser collimator set up in advance, and ensure that base plate line and inspection line overlap, make straightness error≤0.5mm; Secondly, carry out spot welding location, tentatively stage casing frame is linked together; Then carry out secondary to the position error in frame stage casing to check and revise; To be adjusted complete, full weld is carried out to all bevel for weldings, finally completes closing up of frame stage casing;
3) first section of the frame machined and the lifting of frame rear are extremely corresponded to the front and back position in frame stage casing, then use laser alignment to check the position error revising frame; That carries out overall three modules recently closes up welding; First carry out spot welding Primary Location, next carries out secondary check round-off error value, finally completes and closes up the welding of entirety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906939.9A CN105414785B (en) | 2015-12-09 | 2015-12-09 | A kind of marine low speed diesel engine frame manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906939.9A CN105414785B (en) | 2015-12-09 | 2015-12-09 | A kind of marine low speed diesel engine frame manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105414785A true CN105414785A (en) | 2016-03-23 |
| CN105414785B CN105414785B (en) | 2017-12-26 |
Family
ID=55493559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510906939.9A Expired - Fee Related CN105414785B (en) | 2015-12-09 | 2015-12-09 | A kind of marine low speed diesel engine frame manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105414785B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077983A (en) * | 2016-06-29 | 2016-11-09 | 安徽涌诚机械有限公司 | High precision large-sized welding machine frame process |
| CN108127284A (en) * | 2017-12-29 | 2018-06-08 | 中船海洋动力部件有限公司 | Assembly method before a kind of marine diesel rack weldering |
| CN108673054A (en) * | 2018-06-28 | 2018-10-19 | 中铁山桥集团有限公司 | A kind of stock method of super large-scale steel construction shaped piece |
| CN110471379A (en) * | 2019-08-13 | 2019-11-19 | 清华大学 | A kind of Assembling Production system and method |
| CN111168315A (en) * | 2020-02-26 | 2020-05-19 | 中国船舶重工集团柴油机有限公司 | Single-piece welding method for low-speed diesel engine frame for ship |
| CN111872643A (en) * | 2020-08-04 | 2020-11-03 | 中国船舶重工集团柴油机有限公司 | Assembly welding process for guide rail plate, wing plate and bottom plate of diesel engine frame and product |
| CN112743211A (en) * | 2019-10-29 | 2021-05-04 | 中船海洋动力部件有限公司 | Welding method and device for cross beam part and side plate assembly of diesel engine base |
| CN113478148A (en) * | 2021-07-20 | 2021-10-08 | 中国船舶重工集团柴油机有限公司 | Rapid assembling and welding tool and method for diesel engine frame pedal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002155388A (en) * | 2000-09-08 | 2002-05-31 | Fujita Works Co Ltd | Method of manufacturing electrolytic cell unit, electrolytic cell unit, rib for electrolytic cell unit, welding method and welding system |
| US6886522B1 (en) * | 1999-05-07 | 2005-05-03 | Perkins Engines Company Limited | Cylinder block and method of fabrication thereof |
| CN100395074C (en) * | 2005-07-20 | 2008-06-18 | 沪东重机有限公司 | Welding method for triangle screw sleeve type machine frame |
| CN102009275A (en) * | 2010-11-03 | 2011-04-13 | 上海交通大学 | Automatic welding system for rack and base of marine diesel engine |
| CN101644190B (en) * | 2009-09-04 | 2011-06-29 | 沪东重机有限公司 | Butt joint method of large cylinder-diameter diesel engine stand |
| CN103753064B (en) * | 2013-12-31 | 2015-08-26 | 沪东重机有限公司 | A kind of assembly technique of marine diesel frame beam part |
-
2015
- 2015-12-09 CN CN201510906939.9A patent/CN105414785B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6886522B1 (en) * | 1999-05-07 | 2005-05-03 | Perkins Engines Company Limited | Cylinder block and method of fabrication thereof |
| JP2002155388A (en) * | 2000-09-08 | 2002-05-31 | Fujita Works Co Ltd | Method of manufacturing electrolytic cell unit, electrolytic cell unit, rib for electrolytic cell unit, welding method and welding system |
| CN100395074C (en) * | 2005-07-20 | 2008-06-18 | 沪东重机有限公司 | Welding method for triangle screw sleeve type machine frame |
| CN101644190B (en) * | 2009-09-04 | 2011-06-29 | 沪东重机有限公司 | Butt joint method of large cylinder-diameter diesel engine stand |
| CN102009275A (en) * | 2010-11-03 | 2011-04-13 | 上海交通大学 | Automatic welding system for rack and base of marine diesel engine |
| CN103753064B (en) * | 2013-12-31 | 2015-08-26 | 沪东重机有限公司 | A kind of assembly technique of marine diesel frame beam part |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077983A (en) * | 2016-06-29 | 2016-11-09 | 安徽涌诚机械有限公司 | High precision large-sized welding machine frame process |
| CN106077983B (en) * | 2016-06-29 | 2019-08-02 | 安徽涌诚机械有限公司 | High precision large-sized welding machine frame process |
| CN108127284A (en) * | 2017-12-29 | 2018-06-08 | 中船海洋动力部件有限公司 | Assembly method before a kind of marine diesel rack weldering |
| CN108127284B (en) * | 2017-12-29 | 2020-09-25 | 中船海洋动力部件有限公司 | Assembly method before welding for marine diesel engine frame |
| CN108673054A (en) * | 2018-06-28 | 2018-10-19 | 中铁山桥集团有限公司 | A kind of stock method of super large-scale steel construction shaped piece |
| CN110471379A (en) * | 2019-08-13 | 2019-11-19 | 清华大学 | A kind of Assembling Production system and method |
| CN112743211A (en) * | 2019-10-29 | 2021-05-04 | 中船海洋动力部件有限公司 | Welding method and device for cross beam part and side plate assembly of diesel engine base |
| CN111168315A (en) * | 2020-02-26 | 2020-05-19 | 中国船舶重工集团柴油机有限公司 | Single-piece welding method for low-speed diesel engine frame for ship |
| CN111872643A (en) * | 2020-08-04 | 2020-11-03 | 中国船舶重工集团柴油机有限公司 | Assembly welding process for guide rail plate, wing plate and bottom plate of diesel engine frame and product |
| CN113478148A (en) * | 2021-07-20 | 2021-10-08 | 中国船舶重工集团柴油机有限公司 | Rapid assembling and welding tool and method for diesel engine frame pedal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105414785B (en) | 2017-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105414785A (en) | Manufacturing method for rack of marine low-speed diesel engine | |
| CN109604767B (en) | Intelligent welding control system and method for thick plate narrow gap GMA robot | |
| CN102009275B (en) | Automatic welding system for rack and base of marine diesel engine | |
| CN104858636B (en) | Seal ring assembly machine | |
| CN103252557A (en) | Welding method achieving medium thick plate backing welding without back gouging | |
| CN112663042A (en) | Trajectory planning method for laser material increase repair | |
| CN111730239B (en) | Steel structure butt welding robot welding process and welding line structure | |
| CN108127284A (en) | Assembly method before a kind of marine diesel rack weldering | |
| CN114669834A (en) | Groove welding method | |
| CN205111110U (en) | Rotation automatic weld machine | |
| CN207642480U (en) | A kind of weld seam scanning system being used for five axis agitating frictions welding equipment | |
| CN204353681U (en) | Auto panel fixture | |
| KR101809876B1 (en) | Pipe inside diameter and outside chamfer inspection apparatus | |
| CN111014905A (en) | Mechanical welding method for header close-packed pipe joints | |
| CN116167108A (en) | Welding process recommendation system | |
| CN206824821U (en) | A kind of automobile chair frame laser welding system | |
| CN109909633A (en) | A kind of shelf storage column piece automatic soldering device and its application method | |
| CN115430991A (en) | Steel plate laser repairing device and method | |
| CN204735897U (en) | A frame set is to anchor clamps that is used for high pressure notes steam turbine group to prepare | |
| CN204747799U (en) | Assembly devices of barrel reinforcing ring | |
| CN110508988B (en) | Container corner post welding device and method based on line laser scanning | |
| CN106826035A (en) | A kind of welding procedure of rail mounted automatic welding device | |
| CN202517215U (en) | Special-shaped flange pipeline assembly welding fixture | |
| CN110883547A (en) | Machining device and machining method for plate parts | |
| CN105643212A (en) | Machining method for integrated heavy load reducer boxes for rolling mill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201028 Address after: 17-1, building 033, No.15, Lane 587, Juxian Road, hi tech Zone, Ningbo City, Zhejiang Province Patentee after: CHINA E-TECH (NINGBO) MARITIME ELECTRONICS RESEARCH INSTITUTE Co.,Ltd. Address before: 212003, No. 2, Mengxi Road, Zhenjiang, Jiangsu Patentee before: JIANGSU University OF SCIENCE AND TECHNOLOGY |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |