CN103381524A - Disc cutter laser repair process - Google Patents
Disc cutter laser repair process Download PDFInfo
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- CN103381524A CN103381524A CN2012101327064A CN201210132706A CN103381524A CN 103381524 A CN103381524 A CN 103381524A CN 2012101327064 A CN2012101327064 A CN 2012101327064A CN 201210132706 A CN201210132706 A CN 201210132706A CN 103381524 A CN103381524 A CN 103381524A
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- milling cutter
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- dish milling
- disc cutter
- lifting
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Abstract
The invention discloses a disc cutter laser repair process which is characterized by comprising the following processes: selecting an appropriate efficient laser generator and a disc cutter repair device; placing a damaged disc cutter on a workbench, fixing the disc cutter through a clamping device, and connecting a powder conveying tube with a powder conveying device; starting the efficient laser generator, heating the efficient laser generator, and sending the laser beam onto the disc cutter body; adjusting the longitudinal position of a lifting bare head and the workbench and the position of the lifting bare head; adjusting the power of the laser and the powder conveying volume of a powder conveyer; heaping up alloy powders in a molten bath, and repairing the damaged part of the disc cutter; adopting general polishing mode to recover the original geometric dimension of the disc cutter after accomplishing repairing. According to the disc cutter laser repair process, internal defect caused by fire welding process is avoided, so as to enable the disc cutter to be repaired as good as new and the original size to be recovered, and certain parts can be solidified, so as to prolong the service life of the disc cutter.
Description
Technical field
The invention belongs to the cutter renovation technique, specifically, design a kind of dish milling cutter laser repairing process.
Background technology
At present, after milling cutter hits cutter, make cutter hub impaired due to dish, will be difficult to after cutter hub is impaired recover, particularly the advanced person of import is coiled milling cutter.Generally there are three kinds of selections in domestic producer: the one, mail to the original producton location maintenance; The 2nd, scrap and again buy new product; The bead-welding technology that three use are traditional is repaired.If select one, two kind of mode, not only haulage time is long, increases cost, also reduces output.Select three can solve to a certain extent a little problems, but risk is very large.Because traditional built-up welding generally refers to thermoelectricity weldering and argon arc welding etc., the weld defect problem that they are difficult to avoid with regard to existence self: so-called weld defect makes the welding point metallicity degenerate exactly.Weld defect can be divided into External Defect and the large class of internal flaw two.External Defect comprises that mainly Weld Profiles is undesirable, exists, and undercut, arc crater, surface pores can occur, when serious, undercut can occur, burn etc., the existence of these defectives, affect the safe handling of structure, also affected the normal use of cutter hub after the welding.The internal flaw major embodiment is the welding line joint internal flaw, and the welding line joint internal flaw shows with the formation of crackle, lack of penetration, slag inclusion, incomplete fusion, pore, joint metal structure defective, and their can the serious bearing capacity that reduces weld seam.
Because the working environment that coils milling cutter is very abominable, these weld defects that the speed of mainshaft can reach the traditional built-up welding of 3000-4000rp/min. must bring huge risk to producer.Spent a large amount of money and energy, not only cutter is not fixed, and also can bring huge threat to machine safety and operator's life and health on the contrary.
Summary of the invention
The technological problems that the present invention will solve is to provide a kind of dish milling cutter laser repairing process, this technique not only can effectively reduce the integrally annealed that brings to cutter integral body because of fuel factor and weld defect makes built-up welding tissue and cutter hub in conjunction with the problem such as not firm, but also can provide the new alloy tissue for the dish milling cutter, make the performance of integral body of dish milling cutter obtain good improvement, the performances such as wear-resisting, the shock resistance of raising dish milling cutter, corrosion resistant.
For addressing the above problem, the technical solution adopted in the present invention is:
A kind of dish milling cutter laser repairing process is characterized in that: mainly comprise following operation:
1) select suitable efficient laser generator and dish milling cutter prosthetic device; Described dish milling cutter prosthetic device comprises base, and the marginal position of base is provided with column, and the top of column is provided with cantilever; The lifting shaven head is installed on cantilever, and the bottom of lifting shaven head is equipped with to send to be in charge of; Be positioned on the base under the lifting shaven head and be provided with workbench, the sidepiece of workbench is provided with clamping device; Be provided with movable fixture between workbench bottom and base;
2) impaired dish milling cutter is placed on workbench, and will coils milling cutter by clamping device and fix, the damaged part of assurance dish milling cutter faces up, and simultaneously, powder feeding pipe is connected with dust feeder;
3) open the effect laser generator, and after low-power preheating 10min, make laser beam by the leaded light of lifting shaven head, reflex on the dish milling cutter;
4) by adjusting the lifting shaven head at position, the front and back position of workbench and the upper-lower position of lifting shaven head of cantilever left and right, the position and the spot size that guarantee laser beam meet processing request, the position, molten bath that the nozzle position that also guarantees powder feeding pipe alignment and the surface action of dish milling cutter all the time forms;
5) regulate the power of laser instrument and the powder sending quantity of adjusting powder feeder, until at the smooth a small amount of alloyed powder of crucible zone surface appearance;
6) alloyed powder is piled up in the molten bath, with the damaged part reparation of dish milling cutter; After reparation is completed, adopt conventional polishing mode, the original physical dimension of reply dish milling cutter.
Say further:
Described lifting shaven head comprises the support that is movably connected on cantilever, and the adjustment sleeve is installed on the lower surface of support, and the lower end of adjusting sleeve is equipped with light-blocking member.
Clamping device comprises tailstock and the eccentric fixture that is arranged on the relative both sides of workbench, and the eccentric fixture stir yourself is arranged on column.
Speculum, focus lamp are installed in described support from top to bottom successively; The bottom of described support is equipped with the powder feeding adjusting device, and powder feeding pipe is connected with the powder feeding adjusting device.
Further say:
Described efficient laser generator is 3KW crossing current CO
2Laser instrument, its wavelength that sends is the laser of 10.6 μ m.
Described alloy powder is Co-based alloy powder; Described nitrogen is that purity is 99.99% high pure nitrogen.
Owing to having adopted technique scheme, compared with prior art, the present invention takes full advantage of 3K crossing current WCO
2The laser of the high power density that cross-flow laser sends in conjunction with Co-based alloy powder, is repaired dish milling cutter body damage location under the protection of nitrogen, reaches the purpose of metallurgical binding.Owing to adopting laser melting and coating process can reach higher hardness, higher anti-wear performance, corrosion-resistant, high temperature resistant shock proof ability, cladding layer and matrix are metallurgical binding, the new alloy tissue is provided, therefore in conjunction with firm, difficult drop-off, reliability be far above traditional thermoelectricity Welding, the internal flaw of having avoided simultaneously the thermoelectricity Welding to cause, promote greatly the service life of cutter hub, reduce costs.The dish milling cutter of some imports because of hit that cutter produces than macrolesion, this technique not only can make the dish milling cutter repair sth. old and make it as good as new, and recovers life size, but also can reinforce some position, the service life of prolongation dish milling cutter.
The invention will be further described below in conjunction with the drawings and specific embodiments simultaneously.
Description of drawings
Fig. 1 is the structural representation of the dish milling cutter prosthetic device of an embodiment of the present invention;
Fig. 2 is the use state diagram of dish milling cutter prosthetic device.
In figure: the 1-base; The 2-column; The 3-cantilever; The 4-workbench; The 5-eccentric fixture; 6-lifting shaven head; The 7-tailstock; The 8-powder feeding pipe; 9-coils end mill body; The 60-support; The 61-speculum; The 62-focus lamp; 63-adjusts sleeve; The 64-light-blocking member; 65-powder feeding adjusting device.
The specific embodiment
Embodiment:
Before dish milling cutter laser repairing begins, at first to select suitable fix tool.In the present embodiment, according to the needs of renovation technique, select efficient laser generator and dish milling cutter prosthetic device.Efficient laser generator is 3KW crossing current CO
2Laser instrument, its wavelength that sends is the laser of 10.6 μ m.Dish milling cutter prosthetic device comprises base 1, and the marginal position of base 1 is provided with column 2, and the top of column 2 is provided with cantilever 3.Lifting shaven head 6 is installed on cantilever 3, and the bottom of lifting shaven head is equipped with powder feeding pipe 8.Be positioned on the base 1 under lifting shaven head 6 and be provided with workbench 4, the sidepiece of workbench 4 is provided with clamping device.Be provided with movable fixture between workbench 4 bottoms and base 1.The selection of movable fixture has multiple, as long as can realize mobilely, all in protection scope of the present invention, selection has multiplely thus, does not just enumerate explanation inferior.
Clamping device comprises tailstock 7 and the eccentric fixture 5 that is arranged on workbench 4 relative both sides, and eccentric fixture 5 is movably arranged on column 2.Utilize the acting in conjunction of eccentric fixture 5 and tailstock 7, the workpiece that is placed on workbench 4 can be fixed.
Speculum 61 and focus lamp 62 are installed in support 60 from top to bottom successively, and reflection and focusing by speculum 61 and focus lamp 62 make laser beam irradiation to damaged part.
The bottom of support 60 is equipped with powder feeding adjusting device 65.Generally, powder feeding adjusting device is arranged on the bottom of regulating sleeve 63.Powder feeding pipe 8 is connected with powder feeding adjusting device 65, so just can guarantee the nozzle position alignment of powder feeding pipe and the position on dish milling cutter surface.
Dish milling cutter laser repairing process comprises following operation:
1) select suitable efficient laser generator and dish milling cutter prosthetic device.
2) impaired dish milling cutter is placed on workbench, and will coils milling cutter by clamping device and fix, the damaged part of assurance dish milling cutter faces up, and simultaneously, powder feeding pipe is connected with dust feeder.
In this operation, dust feeder comprises powder feeder and nitrogen cylinder, and the alloyed powder that powder feeder uses is Co-based alloy powder, and the nitrogen in nitrogen cylinder is that purity is 99.99% high pure nitrogen.
3) open efficient laser generator, and after low-power preheating 10min, make laser beam by the leaded light of lifting shaven head, shine at last on the dish end mill body.In this process, laser beam passed through mirror reflects before this, then focused on by focus lamp, just shone at last the dish end mill body.
4) adjust the lifting shaven head in the position of cantilever left and right, namely regulate X-direction, make laser beam on the position of vertical and paper direction with coil the milling cutter injury region and overlap; Adjust the front and back position of workbench, namely regulate Y direction, make laser beam can directly inject the damage location of dish milling cutter; Adjust the upper-lower position of lifting shaven head, regulate Z-direction, make laser beam meet processing request at the spot size that surface of the work forms.The position and the spot size that so just guarantee laser beam meet processing request, the position, molten bath that the nozzle position that also guarantees powder feeding pipe alignment and the surface action of dish milling cutter all the time forms.
5) regulate the power of laser instrument and the powder sending quantity of adjusting powder feeder, until pile up at the smooth a small amount of alloyed powder of crucible zone surface appearance.
6) alloyed powder is piled up in the molten bath, with the damaged part reparation of dish milling cutter; After reparation is completed, adopt conventional polishing mode, the original physical dimension of reply dish milling cutter.
In repair process, the most important thing is synchronous powder feeding system, namely in laser beam reparation dish milling cutter damaged part, the tube head that is arranged on the powder feeding pipe on the powder feeding adjusting device is the position that alignment and surface of the work effect form the molten bath forever.In like manner, alloyed powder is to point to laser beam in the place of working of damaged part in the process of laser repairing always, along with moving ahead of laser beam, thereby forms alloy cladding layer.In repair process, the uppermost of the cross section after cladding is alloy cladding layer, and the transitional region of alloy cladding layer and cutter hub matrix is the metallurgical binding position, then is exactly down the heat-affected zone.Because the heat affecting that laser repairing process produces is less to the entire effect of dish milling cutter, so laser repairing process is the renovation technique of comparatively ideal dish milling cutter.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or akin technical scheme with the present invention, all belongs to protection scope of the present invention.
Claims (6)
1. dish milling cutter laser repairing process is characterized in that: mainly comprise following operation:
1) select suitable efficient laser generator and dish milling cutter prosthetic device; Described dish milling cutter prosthetic device comprises base, and the marginal position of base is provided with column, and the top of column is provided with cantilever; The lifting shaven head is installed on cantilever, and the bottom of lifting shaven head is equipped with to send to be in charge of; Be positioned on the base under the lifting shaven head and be provided with workbench, the sidepiece of workbench is provided with clamping device; Be provided with movable fixture between workbench bottom and base;
2) impaired dish milling cutter is placed on workbench, and will coils milling cutter by clamping device and fix, the damaged part of assurance dish milling cutter faces up, and simultaneously, powder feeding pipe is connected with dust feeder;
3) open efficient laser generator, and after low-power preheating 10min, make laser beam by the leaded light of lifting shaven head, reflex on the dish milling cutter;
4) by adjusting the lifting shaven head at position, the front and back position of workbench and the upper-lower position of lifting shaven head of cantilever left and right, the position and the spot size that guarantee laser beam meet processing request, the position, molten bath that the nozzle position that also guarantees powder feeding pipe alignment and the surface action of dish milling cutter all the time forms;
5) regulate the power of laser instrument and the powder sending quantity of adjusting powder feeder, until at the smooth a small amount of alloyed powder of crucible zone surface appearance;
6) alloyed powder is piled up in the molten bath, with the damaged part reparation of dish milling cutter; After reparation is completed, adopt conventional polishing mode, the original physical dimension of reply dish milling cutter.
2. dish milling cutter laser repairing process according to claim 1, it is characterized in that: described lifting shaven head comprises the support that is movably connected on cantilever, and the adjustment sleeve is installed on the lower surface of support, the lower end of adjusting sleeve is equipped with light-blocking member.
3. dish milling cutter laser repairing process according to claim 1, it is characterized in that: described clamping device comprises tailstock and the eccentric fixture that is arranged on the relative both sides of workbench, and the eccentric fixture stir yourself is arranged on column.
4. dish milling cutter laser repairing process according to claim 3, is characterized in that: speculum, focus lamp are installed in described support from top to bottom successively; The bottom of described support is equipped with the powder feeding adjusting device, and powder feeding pipe is connected with the powder feeding adjusting device.
5. according to claim 1, the dish milling cutter laser repairing process described in 2,3 or 4, it is characterized in that: described efficient laser generator is 3KW crossing current CO
2Laser instrument, its wavelength that sends is the laser of 10.6 μ m.
6. according to claim 1, the dish milling cutter laser repairing process described in 2,3 or 4, it is characterized in that: described alloy powder is Co-based alloy powder; Described nitrogen is that purity is 99.99% high pure nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101327064A CN103381524A (en) | 2012-05-03 | 2012-05-03 | Disc cutter laser repair process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101327064A CN103381524A (en) | 2012-05-03 | 2012-05-03 | Disc cutter laser repair process |
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| CN103381524A true CN103381524A (en) | 2013-11-06 |
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| CN2012101327064A Pending CN103381524A (en) | 2012-05-03 | 2012-05-03 | Disc cutter laser repair process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390246A (en) * | 2020-05-09 | 2020-07-10 | 宁波江丰复合材料科技有限公司 | Method for prolonging service life of composite cutter |
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| CN1546272A (en) * | 2003-12-18 | 2004-11-17 | 北京工业大学 | Laser cladding method for stick milling cutter |
| CN1554803A (en) * | 2003-12-22 | 2004-12-15 | 华中科技大学 | Method and its device for preparing cutter by laser coating composite ceramic layer |
| CN101974747A (en) * | 2010-07-06 | 2011-02-16 | 山东建能大族激光再制造技术有限公司 | Laser cladding method of conical surface of cutting teeth |
| CN202045454U (en) * | 2011-03-23 | 2011-11-23 | 北京瑞派泰马激光科技有限公司 | Laser processing machine tool |
| JP2012207884A (en) * | 2011-03-30 | 2012-10-25 | Panasonic Corp | Cooling device and article storage device |
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| CN2495407Y (en) * | 2001-02-19 | 2002-06-19 | 沈阳大陆激光成套设备有限公司 | Single column and mobile type numerical control laser processing machine |
| CN1546272A (en) * | 2003-12-18 | 2004-11-17 | 北京工业大学 | Laser cladding method for stick milling cutter |
| CN1554803A (en) * | 2003-12-22 | 2004-12-15 | 华中科技大学 | Method and its device for preparing cutter by laser coating composite ceramic layer |
| CN101974747A (en) * | 2010-07-06 | 2011-02-16 | 山东建能大族激光再制造技术有限公司 | Laser cladding method of conical surface of cutting teeth |
| CN202045454U (en) * | 2011-03-23 | 2011-11-23 | 北京瑞派泰马激光科技有限公司 | Laser processing machine tool |
| JP2012207884A (en) * | 2011-03-30 | 2012-10-25 | Panasonic Corp | Cooling device and article storage device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390246A (en) * | 2020-05-09 | 2020-07-10 | 宁波江丰复合材料科技有限公司 | Method for prolonging service life of composite cutter |
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Application publication date: 20131106 |