CN103612068A - Road roller rim rolling technology - Google Patents
Road roller rim rolling technology Download PDFInfo
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- CN103612068A CN103612068A CN201210486908.9A CN201210486908A CN103612068A CN 103612068 A CN103612068 A CN 103612068A CN 201210486908 A CN201210486908 A CN 201210486908A CN 103612068 A CN103612068 A CN 103612068A
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a road roller rim rolling technology. The technology comprises marking and cutting, feeding, straight end pre-pressing, primary roll bending, finishing and spot welding, butt seam welding and rolling. The road roller rim rolling technology has the advantages of being capable of saving materials and labor force, high in efficiency and the like.
Description
Technical field
The present invention relates to mechanical manufacturing field, especially a kind of middle-size and small-size road roller wheel rim rolling technology.
Background technology
With roll of steel plate road roller wheel circle processed, generally on three rolls plate bending machine, carry out, traditional handicraft method has two kinds.
Method is a length in reserve method, on the basis of rim material development size, increases certain length, and this length is determined by the diameter of two driving wheel spacing of three rolls plate bending machine and the wheel rim of processing.Take three roller coiling machine W11-30 * 3000 is example, and two driving wheel centre-to-centre spacing are 620mm, and reserved steel plate length should be 620mm(experience size).Its technical process is: line blanking, line draw a design punching (slicing off the reserved length of material reference line of technique in postorder, impartial apart from two ends length), material loading (centering is installed on coiling machine), roll bending, gas cutting (slicing off the reserved length of material of technique), to break mouthful on (docking with), finishing (repairing misalignment and mismatch amount), shape spot welding (carrying out at roll bending), discharging, welding, secondary coiling machine round as a ball.As Chinese Patent Application No. 201210244415.4 with three rolls plate bending machine, roll the process of wheel rim, although reduced to a certain extent waste of material, waste or huge.
Another kind method is by mould pre-bending method, at the plate two ends of launching to become under dead size by wheel rim, with particular manufacturing craft, carries out bending, and then rolls up circle to coiling machine.Its technical process is: line blanking, breaks mouthful, adjusts installation mold, pre-bends, and as Fig. 1, material loading (centering is installed on coiling machine), roll bending, electric welding, round as a ball.This method is applicable to the making of the hand steered serial road roller wheel rim of my company.The major defect of this technique is the hydraulic press that needs particular manufacturing craft and suitable tonnage while pre-bending, the versatility of mould is subject to wheel rim radius, thickness of slab and width impact, the different required moulds of wheel rim are also different, and manufacturing cost is larger, and general every mold is all ten thousand yuan of left and right.And in the operation that pre-bends, adjust installation mold and lose time, while pre-bending, increase again operator's the amount of labour.
Summary of the invention
In order to solve traditional handicraft, exist waste serious, the shortcoming that mould involves great expense, the present invention proposes a kind of road roller wheel rim rolling technology, and it has the material of saving, saves artificial, efficiency advantages of higher.
The technical scheme that the present invention solves its technical problem employing is that rolling technology is as follows:
A, line blanking, plate cutting length dimension is by launching the blanking of clean material size, and this size is pressed neutral line and is calculated, and width dimensions is considered allowance;
B, material loading, guarantee that blanking side edge of steel plate and coiling machine roll axis are perpendicular, and its squareness tolerance should guarantee at every meter≤1.5mm;
C, pre-straightening termination, first plate moves on coiling machine, makes one end apart from the about 500mm of top roll center vertical plane place, with coiling machine top roll (driven pulley), sheet material is pressed down, now, coiling machine only has feed motion, do not roll, when press-bending angle reaches 120 ° of left and right, feed-disabling motion, and appropriate rollback top roll, then start lower roll, sheet material-rolling, to the other end, is extruded to the long straight termination of 250mm, as shown in Figure 2;
D, a roll bending, start coiling machine by the mid portion of sheet material roll bending repeatedly;
E, finishing and spot welding, the object of finishing is to eliminate unfitness of butt joint, mismatch amount;
F, welding opposite joint, wheel rim, after tack-weld, can discharging be implemented butt welding;
When g, round as a ball moulding material loading, directly to connect the flat surface is placed between upper and lower three rollers, implements the operation of local roll bending, until this place circular arc and when roll bending circular arc approaches in advance, remake whole circumference round as a ball.
Line blanking in above-mentioned technique is specially: during line, guarantee that wheel rim length of run direction is consistent with steel plate machine direction, simultaneously, guarantee the Founder of blanking shape, after line, to proofread and correct size, particularly geomery, guarantee Diagonal Dimension error≤2mm; During blanking, two ends adopt chamfering process, and chamfer shape adopts 45 ° of chamferings, but the size of two surface chamfers is different, for inner circle two ends chamfer dimesion, is 0.4 δ, and δ refers to steel plate thickness, for cylindrical two ends chamfer dimesion, is 0.5 δ.
In above-mentioned technique, a roll bending is specially: vertical feed amount will slowly feeding in repeatedly rolling; When roll bending degree can make the elbow contact at two ends, feed-disabling motion, only rolls repeatedly, when two elbows are fully conflicted, stops rolling; Before stopping rolling, should be by two elbow plane rollings above coiling machine, and guarantee the flatness≤1mm of the straight Flat-end in two ends; When flatness is overproof, can adjust by the feed motion of upper roll wheel.
In above-mentioned technique, finishing is specially with spot welding: when unfitness of butt joint is larger, can rise top roll, according to misalignment direction, with special spanner, pull wheel rim, wheel rim center line and running roller be turned round and passed certain angle, then make top roll press down, within unfitness of butt joint is adjusted to 1mm; Then adjust mismatch amount, answer≤0.5mm of mismatch amount, when mismatch amount is larger, method of adjustment is repeatedly at the arc section that approaches perk limit, to roll, and makes perk limit eave tile, till reaching requirement to check; Wheel rim mismatch carries out tack-weld after eliminating, and weldering hop count amount is determined according to wheel rim length, general every 500mm spot welding three places, and weldering section is generally on cylindrical opposite joint, and weldering segment length 10mm, welds.
In above-mentioned technique, welding opposite joint is specially: the equal welding of inner and outer welding is to half weld bead height, carries out in this case secondary round as a ball, after round as a ball moulding, then supplies leg height; Or adopt the equal welding of inner and outer welding to weld bead height requirement, and carrying out secondary when round as a ball, with oxy arc, outside weld is once heated, make commissure in round as a ball forming process be easier to realize plastic deformation, the weld defect that Crack prevention etc. are serious.
The invention has the beneficial effects as follows:
(1) greatly improved stock utilization, reduced leftover bits, every kind of wheel rim all can, by dead size blanking, remove technique elbow;
(2) reduce equipment and mould and drop into, do not need to join hydraulic press, do not need to make precompressed elbow module, adopt straight termination, can directly on coiling machine, implement, easy to operate;
(3) operating efficiency is high, has saved the more time taking process such as pre-bending, cut edge, turnover, and efficiency is original 3 times;
(4) input cost is few, does not drop into new equipment and relevant technological equipment, working position apparatus;
(5) improve wheel rim quality, because adopting dull and stereotyped docking, easily realize the round as a ball transition of circular arc, stopped round as a ball dead angle, guaranteed circularity requirement, also for follow-up machining, created convenience.
Accompanying drawing explanation
Sheet material after Fig. 1 pre-bending;
Fig. 2 straight peen rolls schematic diagram;
The state of straight termination, Fig. 3 two ends to timing.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Embodiment
1 plate cutting.Plate cutting length dimension is by launching the size blanking (width dimensions is only considered allowance) of clean material, and this size is pressed neutral line and calculated.Neutral line is difficult for accurately determining, for sheet material roll bending, be subject to thickness of slab, roll bending effect of radius large (also having temperature impact), middle-size and small-size road roller wheel girth sheets is thick between δ 12～δ 24, wheel rim radius is between 200mm～650mm, in this case, neutral line approaches steel plate thickness 1/2nd places substantially, comes according to this to determine that wheel rim launches long.When line, guarantee that wheel rim length of run direction is consistent with steel plate machine direction, meanwhile, guarantee the Founder of blanking shape, generally, after line, to proofread and correct size, particularly geomery, guarantee Diagonal Dimension error≤2mm.For the chamfering process at two ends, can carry out at blanking scene.Chamfer shape is general adopts 45 ° of chamferings, but the size of two surface chamfers is different, for inner circle two ends chamfer dimesion, is 0.4 δ (δ refers to steel plate thickness), is 0.5 δ, as shown in Figure 3 for cylindrical two ends chamfer dimesion.Why carrying out such technological design, is because wheel rim inner circle is not processed, and just local weld seam is carried out to reconditioning, do not affect weld strength, and cylindrical will carry out machining, generally by turning 3～5mm, still can keep the requirement of outside weld design strength after turning.
2 roll bending technical process, this technical process is the core of whole technique.
2.1 material loading material loading work step is the same with general material loading work step, is mainly centering, will guarantee that blanking side edge of steel plate and coiling machine roll axis are perpendicular, its squareness tolerance should guarantee at every meter≤1.5mm, makes like this unfitness of butt joint ratio of round as a ball rear rim be easier to eliminate.
2.2 pre-straightening terminations are when roll bending, and roll bending not within the scope of the 250mm of two ends, gives over to straight termination.First plate is to move on the coiling machine of W11-30 * 3000 in machine model, makes one end apart from the about 500mm of top roll center vertical plane place, with coiling machine top roll (driven pulley), sheet material is pressed down, now, coiling machine only has feed motion, does not roll, when press-bending angle reaches 120 ° of left and right, feed-disabling motion, and appropriate rollback top roll, then start lower roll, by sheet material-rolling to the other end, extrude the long straight termination of 250mm, as shown in Figure 2.
2.3 roll bendings start running roller by the mid portion of coiling machine roll bending repeatedly.In operating process, vertical feed amount will be determined according to steel plate thickness, general every feeding 4mm, to repeatedly roll at least twice, the amount of feeding of 4mm can not primary feed, slowly feeding in twice is rolled repeatedly, so both guaranteed certain operating efficiency, can reduce preferably bending stress again, this is all favourable to the safety in utilization of the quality of workpiece, equipment.When roll bending degree can make the elbow contact at two ends, feed-disabling motion, only rolls repeatedly, when two elbows are fully conflicted, stops rolling.Before stopping rolling, should be by two elbow plane rollings above coiling machine, and guarantee the flatness≤1mm of the straight Flat-end in two ends, as Fig. 3.When flatness is overproof, can adjust by the feed motion of upper roll wheel.Reach the technological requirement of this work step, can be next step round as a ball the providing safeguard of finishing, spot welding, secondary.
2.4 finishings are to eliminate unfitness of butt joint, mismatch amount with the object of spot welding finishing.When unfitness of butt joint is larger, can rise top roll, according to misalignment direction, with special spanner, pull wheel rim, wheel rim center line and running roller are turned round and passed certain angle, then make top roll press down, within unfitness of butt joint is adjusted to 1mm.Then adjust mismatch amount, answer≤0.5mm of mismatch amount, when mismatch amount is larger, method of adjustment is repeatedly at the arc section that approaches perk limit, to roll, and makes perk limit eave tile, till reaching requirement to check.Wheel rim mismatch carries out tack-weld after eliminating, and weldering hop count amount is determined according to wheel rim length, general every 500mm spot welding three places, and weldering section is generally on cylindrical opposite joint, and weldering segment length 10mm, welds.
2.5 while requiring the meaning mismatch amount of mismatch, misalignment, straight termination to connect the flat surface degree larger, causes the wheel plate became uneven after processing, when allowance hour, can make the cylindrical can not be all processed, occurs casting skin phenomenon; When unfitness of butt joint is larger, cause end face processing to occur step phenomenon, affect wheel rim presentation quality; Straight termination to connect the flat surface degree overproof too much (generally raised or sunken at joint), causes the wheel rim can not be by round as a ball, i.e. so-called dog leg phenomenon, the wheel rim that this phenomenon is not processed for cylindrical, affects greatlyr, causes wheel rim circularity seriously overproof, now must cut open weld seam, again align spot welding.It is the main points that roll wheel ring process that plane is docked straight termination.
2.6 butt welding technique wheel rims, after tack-weld, can discharging be implemented butt welding.This operation has two kinds of processes.One, the equal welding of inner and outer welding is to half weld bead height, carries out in this case secondary round as a ball, after round as a ball moulding, then supplies leg height.Its advantage is tension (outside weld), compression (inside weld) effect of secondary weld seam while not being subject to roll bending, guarantees weld strength, reduces weld defect; Its two, the equal welding of inner and outer welding is to weld bead height requirement, carrying out secondary when round as a ball, with oxy arc, outside weld once heated, and makes commissure in round as a ball forming process be easier to realize plastic deformation, the weld defect that Crack prevention etc. are serious.Welding equipment adopts NBC500 type CO2 gas shielded welding machine, gage of wire φ 1.2.
During 2.7 round as a ball moulding material loading, directly to connect the flat surface is placed between upper and lower three rollers, implements the operation of local roll bending, until this place circular arc and when roll bending circular arc approaches in advance, remake whole circumference round as a ball.The round as a ball general rotating of whole circumference each three weeks, can reach circularity requirement, general circularity≤1.5mm.
The new wheel rim curling process of advantage of 3 new technologies has following advantage.(1) greatly improved stock utilization, reduced leftover bits, every kind of wheel rim all can, by dead size blanking, remove technique elbow; (2) reduce equipment and mould and drop into, do not need to join hydraulic press, do not need to make precompressed elbow module, adopt straight termination, can directly on coiling machine, implement, easy to operate; (3) operating efficiency is high, has saved the more time taking process such as pre-bending, cut edge, turnover, and efficiency is original 3 times; (4) input cost is few, does not drop into new equipment and relevant technological equipment, working position apparatus; (5) improve wheel rim quality, because adopting dull and stereotyped docking, easily realize the round as a ball transition of circular arc, stopped round as a ball dead angle, guaranteed circularity requirement, also for follow-up machining, created convenience.
Points for attention in 4 technical process: (1) support equipment safety.When secondary is round as a ball, part plan butt weld, weld strength is greater than mother metal in general, plastic deformation be difficult for to occur, and the reaction force of breaker roll is larger, therefore at this, locates when round as a ball, it is slow that rotating speed is wanted, the amount of feeding is little, will carry out process stipulation especially to steel plate thickness, consider thickness, length.The coiling machine model that my company is used is W11-30 * 3000, and its maximum thickness of bending plate is 30mm, and length is 3000mm, and in actual use, maximum thickness of slab is 24mm, and length is 2000mm, well below the peak load of equipment, meets device security instructions for use; (2) welding seam grinding requirement.Must reconditioning smooth to inner and outer welding local high spot, and test with inspection template, guarantee weld seam rounding off, make running roller in roll bending process stressed evenly, the final circularity that guarantees the round as a ball rear rim of finishing; (3) need two people's coordinating operations, operator possesses certain electric welding qualification, cold-working skill simultaneously.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, with reference to embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not depart from the spirit and scope of technical solution of the present invention.Without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these changes and improvements are all in the claimed scope of the invention, and the claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. a road roller wheel rim rolling technology, is characterized in that rolling technology is as follows:
A, line blanking, plate cutting length dimension is by launching the blanking of clean material size, and this size is pressed neutral line and is calculated, and width dimensions is considered allowance;
B, material loading, guarantee that blanking side edge of steel plate and coiling machine roll axis are perpendicular, and its squareness tolerance should guarantee at every meter≤1.5mm;
C, pre-straightening termination, first plate moves on coiling machine, makes one end apart from the about 500mm of top roll center vertical plane place, with coiling machine top roll (driven pulley), sheet material is pressed down, now, coiling machine only has feed motion, does not roll, when press-bending angle reaches 120 ° of left and right, feed-disabling motion, and appropriate rollback top roll, then start lower roll, sheet material-rolling, to the other end, is extruded to the long straight termination of 250mm;
D, a roll bending, start coiling machine by the mid portion of sheet material roll bending repeatedly;
E, finishing and spot welding, the object of finishing is to eliminate unfitness of butt joint, mismatch amount;
F, welding opposite joint, wheel rim, after tack-weld, can discharging be implemented butt welding;
When g, round as a ball moulding material loading, directly to connect the flat surface is placed between upper and lower three rollers, implements the operation of local roll bending, until this place circular arc and when roll bending circular arc approaches in advance, remake whole circumference round as a ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210486908.9A CN103612068A (en) | 2012-11-27 | 2012-11-27 | Road roller rim rolling technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210486908.9A CN103612068A (en) | 2012-11-27 | 2012-11-27 | Road roller rim rolling technology |
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| CN103612068A true CN103612068A (en) | 2014-03-05 |
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| CN201210486908.9A Withdrawn CN103612068A (en) | 2012-11-27 | 2012-11-27 | Road roller rim rolling technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325263A (en) * | 2014-10-23 | 2015-02-04 | 柳州金茂机械有限公司 | Manufacturing process of dredging bucket |
| CN106041420A (en) * | 2016-06-20 | 2016-10-26 | 中国化学工程第三建设有限公司 | Barrel rolling technology |
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| DE2732524A1 (en) * | 1977-07-19 | 1979-02-01 | Busse Diamantwerkz Friedr | Split circular diamond saw blade for stone - has segment halves held by clamping flanges on shaft facilitating replacement |
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| CN1730184A (en) * | 2005-08-11 | 2006-02-08 | 河南科隆石化装备有限公司 | Symmetry type three-roller plate roll barrel no-remain straight flange rolling technique |
| CN102430894A (en) * | 2011-09-28 | 2012-05-02 | 攀钢集团冶金工程技术有限公司 | Process for continuously rolling pipeline without causing pressure head |
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2012
- 2012-11-27 CN CN201210486908.9A patent/CN103612068A/en not_active Withdrawn
Patent Citations (5)
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|---|---|---|---|---|
| DE2732524A1 (en) * | 1977-07-19 | 1979-02-01 | Busse Diamantwerkz Friedr | Split circular diamond saw blade for stone - has segment halves held by clamping flanges on shaft facilitating replacement |
| CN1124181A (en) * | 1994-11-20 | 1996-06-12 | 中国水利水电第四工程局 | Integrative rolling technology for large pressure steel pipe |
| CN1730184A (en) * | 2005-08-11 | 2006-02-08 | 河南科隆石化装备有限公司 | Symmetry type three-roller plate roll barrel no-remain straight flange rolling technique |
| CN102430894A (en) * | 2011-09-28 | 2012-05-02 | 攀钢集团冶金工程技术有限公司 | Process for continuously rolling pipeline without causing pressure head |
| CN102717242A (en) * | 2012-07-06 | 2012-10-10 | 洛阳市双勇机器制造有限公司 | Technology for rolling wheel rims by using three-roller plate rolling machine |
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| 陈兴进等: "中小型压路机轮圈卷制新工艺", 《金属加工（热加工）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325263A (en) * | 2014-10-23 | 2015-02-04 | 柳州金茂机械有限公司 | Manufacturing process of dredging bucket |
| CN106041420A (en) * | 2016-06-20 | 2016-10-26 | 中国化学工程第三建设有限公司 | Barrel rolling technology |
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Application publication date: 20140305 |