CN101205612B - Technique for spur gear surface laser auto-cladding - Google Patents
Technique for spur gear surface laser auto-cladding Download PDFInfo
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- CN101205612B CN101205612B CN 200610134959 CN200610134959A CN101205612B CN 101205612 B CN101205612 B CN 101205612B CN 200610134959 CN200610134959 CN 200610134959 CN 200610134959 A CN200610134959 A CN 200610134959A CN 101205612 B CN101205612 B CN 101205612B
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Abstract
The invention provides a process method for automatic laser cladding on tooth surfaces of spur gears. At first, the gear is clamped on a chuck of an A axis (4) of a four-axis laser processing machine before the laser cladding, the circumference alignment is done to the gear, the flop value is within 0.1mm, then a tooth surface to be processed of a tooth of the gear is adjusted to have an angle of 90 degrees with a laser optical cylinder (5), then the laser optical cylinder (5) is moved to the edge of the tooth root, the diameter of the facula and the light-initiating position are adjusted; the laser cladding is made; an X-axis (1) makes a linear reciprocating movement, a Y-axis (2) backward moves 1.7 to 2.0mm after each cladding, a Z-axis (3) is kept unchanged until one cladding of the tooth surface is finished; the A axis (4) rotates the gear with an angle which is equal to 360 degrees /tooth number, then the next tooth surface is cladded until all the tooth surfaces on the side are cladded; then the laser optical cylinder (5) is readjusted to clad all the tooth surfaces on the other side. The method has the advantages of high working efficiency and good cladding quality.
Description
Technical field
The present invention relates to the processing method of spur gear surface laser cladding.
Background technology
Straight tooth gear as drive disk assembly in many equipment of factory, that uses is very many, and volume is big, the tooth trace more complicated, the spur gear surface that class of precision height, complex manufacturing technology, production cost are higher, the cycle is long, adopt laser repairing is a difficult problem all the time, yet the application of laser auto-cladding spur gear surface processing method is for this difficult problem provides a solution route.
Straight tooth gear is a drive disk assembly important in many equipment, plays important tie effect, because it is to carry out transmission by tooth with contacting of tooth, therefore, usually can cause the wearing and tearing of the flank of tooth, its transmission performance is descended, and even whole equipment can't normally move.
Traditional straight-tooth tooth surface laser cladding is that metal-powder is preset on the flank of tooth by hand, carry out cladding with laser then, flank of tooth of every cladding needs the manual angle of changeing during cladding, guarantee the vertical of each flank of tooth and light, but operation can't guarantee that the angle of at every turn being changeed is consistent like this, therefore, the method of the tradition cladding straight-tooth flank of tooth, efficient is very low, complicated operation, be prone to be mingled with, defective such as pore, crackle.
Summary of the invention
The object of the present invention is to provide the processing method of a kind of spur gear surface laser machinery and even auto-cladding.
The invention provides a kind of processing method of spur gear surface laser auto-cladding, it is characterized in that:
At first, before laser melting coating with the gear clamping on the chuck of four laser process machine A axles 4, gear is carried out the circumference centering, jitter values in 0.1mm,
The flank of tooth to be processed and the laser light tube 5 that rotate a tooth of A axle 4 adjustment gears then move into 90 ° of angles,
Again laser light tube 5 is moved to tooth root edge, adjusts spot diameter and play optical position,
Laser melting coating, X-axis 1 is done straight reciprocating motion, and Y-axis 2 moves 1.7~2.0mm after one of every cladding, and Z axle 3 remains constant, finishes until a flank of tooth cladding,
From (=360 °/number of teeth), the next flank of tooth of cladding finishes until the whole claddings of the flank of tooth of all these sides angle of A axle 4 swing pinions again in self-accusation,
Readjust laser light tube 5 again, institute's geared surface of cladding opposite side.
The processing method of spur gear surface laser auto-cladding provided by the invention, its four laser process machines are to be made of three identical, orthogonal X-axis 1 of form, Y-axis 2, Z axle 3 and a rotation axis A axle 4; X-axis 1, Y-axis 2, Z axle 3 are formed by leading screw and guide rail, leading screw links to each other with servomotor, guide rail controls movement direction, leading screw link to each other with servomotor, and motion-promotion force A axle 1 is provided is to drive main shaft by servomotor by variable gear to rotate, and light tube 5 is fixed on the end of Z axle 2.
The processing method of spur gear surface laser cladding provided by the invention, its four laser numerical control machine tools carry out auto-cladding by the program of flowcharting shown in Figure 2, to guarantee cladding precision and quality.
The processing method of spur gear surface laser cladding provided by the invention adopts the synchronous powder feeding system device that the flank of tooth is carried out powder feeding in its laser melting coating, promptly utilize adjustable motor 10 control disks 9 rotating speeds, regulates powder sending quantity; Powder in the hopper 8 drops on the disk 9, is scraped when forwarding scraper plate 11 positions to, drops in the receiving hopper 12; The power that utilizes highly compressed nitrogen or argon gas 14 to carry as powder is delivered to nozzle 15 by flexible pipe 13 with powder, is ejected into appointed positions; This powder conveyer can be directly with powderject to the hot spot, realize the synchro-feed of powder, to realize the full-automatic cladding spur gear surface of laser.
The processing method of spur gear surface laser auto-cladding provided by the invention, its advantage is: the complicated operation that has overcome conventional laser cladding spur gear surface fully, inefficiency, the ropy shortcoming of cladding is for having opened up a new way in laser repairing straight tooth gear aspect.
Description of drawings
Fig. 1 is the structural representation of four laser process machines;
Fig. 2 is a straight tooth gear laser auto-cladding programflow chart;
Fig. 3 is the structural representation of synchronous powder feeding system device.
Embodiment
Embodiment 1 diameter of phi 646mm step-down gear straight tooth gear
Gear maximum rotating diameter Φ 646mm, thick 250mm, the number of teeth is 80, modulus 8, material is the 45# steel, because long-term operation, causes 75% the flank of tooth that in various degree wearing and tearing are arranged, and brings hidden danger for whole equipment, therefore, needs carry out laser auto-cladding to the flank of tooth.
At first, with the gear clamping on the chuck of numerically-controlled machine (see figure 1) A axle 1, circumference of gear centering jitter values is 0.09mm, the flank of tooth to be processed and the laser light tube 5 that rotate a tooth of A axle 1 adjustment gear then move into 90 ° of angles, again laser light tube 5 is moved to tooth root edge, the adjustment spot diameter is 4mm.Drawing face width of tooth according to the model of making is 10mm, and calculating scale division value is 4.5 °, establishment laser melting coating program (see figure 2), and be sent to Machine-Tool Control platform 6, adopt synchronous powder feeding system mode (see figure 3) simultaneously, to the cladding of gear teeth face automatic laser.
After the cladding, detect through non-destructive test(ing)(NDT), flawless, be mingled with, defective such as pore, working efficiency improves 2~3 times.
Gear maximum rotating diameter Φ 494mm, thick 150mm, 98 of the numbers of teeth, modulus 5, material is the 45# steel, because long-term operation, causes 90% the flank of tooth that in various degree wearing and tearing are arranged, and noise and vibration occurs, influenced the equipment normal operation, therefore, needed the flank of tooth is carried out laser auto-cladding.
At first, with the gear clamping on the chuck of numerically-controlled machine (see figure 1) A axle 1, circumference of gear centering jitter values is 0.10mm, the flank of tooth to be processed and the laser light tube 2 that rotate a tooth of A axle 1 adjustment gear then move into 90 ° of angles, again laser light tube 5 is moved to tooth root edge, the adjustment spot diameter is 5mm.Drawing face width of tooth according to the model of making is 8mm, and calculating scale division value is 3.67 °, establishment laser melting coating program (see figure 2), and be sent to Machine-Tool Control platform 6, adopt synchronous powder feeding system mode (see figure 3) simultaneously, to the cladding of gear teeth face automatic laser.
After the cladding, detect through non-destructive test(ing)(NDT), flawless, be mingled with, defective such as pore, working efficiency improves 2~3 times.
Claims (3)
1. the processing method of a spur gear surface laser auto-cladding is characterized in that:
At first, before laser melting coating with the gear clamping on the chuck of four laser process machine A axles (4), gear is carried out the circumference centering, jitter values in 0.1mm,
The flank of tooth to be processed that rotates a tooth of A axle (4) adjustment gear then becomes 90 ° of angles with laser light tube (5), and four laser process machines are to be made of three identical, orthogonal X-axis of form (1), Y-axis (2), Z axle (3) and a rotation axis A axle (4); X, Y, Z axle (1,2,3) are made up of leading screw and guide rail, and leading screw links to each other with servomotor, and A axle (4) is to drive main shaft by servomotor by variable gear to rotate, and light tube (5) is fixed on the end of Z axle (3),
Again laser light tube (5) is moved to tooth root edge, adjusts spot diameter and play optical position,
Laser melting coating, X-axis (1) is done straight reciprocating motion, and Y-axis (2) moves 1.7~2.0mm after one of every cladding, and Z axle (3) remains constant, finishes until a flank of tooth cladding,
Angle of A axle (4) swing pinion ,=360 °/number of teeth, the next flank of tooth of cladding finishes until the whole claddings of the flank of tooth of all these sides again,
Readjust laser light tube (5) again, institute's geared surface of cladding opposite side.
2. according to the processing method of the described spur gear surface laser auto-cladding of claim 1, it is characterized in that: described four laser process machines carry out auto-cladding by the program of following flow process establishment:
1. the light tube is moved on to the cladding point of beginning;
2. open the light;
3. move to flank of tooth length along X-direction;
4. black out;
5. rapid return plays luminous point;
6. move face width of tooth along Y direction;
7. check whether reach face width of tooth, as do not reach, then carry out operation repeatedly and 3.~6. reach face width of tooth;
8. the A axle changes scale division value;
9. check angle of rotation and whether reach 360 degree, as do not reach, then carry out operation repeatedly 1.~8. to angle be 360 to spend.
3. according to the processing method of claim 1 or 2 described spur gear surface laser auto-claddings, it is characterized in that: adopt the synchronous powder feeding system device that the flank of tooth is carried out powder feeding in the described laser melting coating, promptly utilize adjustable motor (10) control disk (9) rotating speed, regulate powder sending quantity; Powder in the hopper (8) drops on the disk (9), is scraped when forwarding scraper plate (11) position to, drops in the receiving hopper (12); The power that utilizes highly compressed nitrogen or argon gas (14) to carry as powder is delivered to nozzle (15) by flexible pipe (13) with powder, is ejected into appointed positions.
Priority Applications (1)
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CN 200610134959 CN101205612B (en) | 2006-12-22 | 2006-12-22 | Technique for spur gear surface laser auto-cladding |
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CN 200610134959 CN101205612B (en) | 2006-12-22 | 2006-12-22 | Technique for spur gear surface laser auto-cladding |
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CN101205612A CN101205612A (en) | 2008-06-25 |
CN101205612B true CN101205612B (en) | 2010-12-15 |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103498145A (en) * | 2013-09-05 | 2014-01-08 | 江苏翌煜能源科技发展有限公司 | Laser cladding method for key part of stamping die |
CN103866318B (en) * | 2014-03-07 | 2016-07-06 | 南京理工大学 | The melted deep hole supplement prosthetic device of a kind of precinct laser |
WO2017095785A1 (en) * | 2015-11-30 | 2017-06-08 | The Gleason Works | Additive manufacturing of gears |
CN108866546B (en) * | 2018-08-31 | 2020-06-26 | 江苏大学 | Device for repairing gear through laser cladding |
CN113828922B (en) * | 2021-10-09 | 2023-02-17 | 盐城诺焱科技有限公司 | Laser spot welding machine for hardware mould processing |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3911163A (en) * | 1973-12-26 | 1975-10-07 | Xerox Corp | Solder coating process and apparatus |
CN1776022A (en) * | 2005-11-23 | 2006-05-24 | 邹志尚 | Hard composite nano ceramic film cladding for use on gear and shaft surface of gearbox |
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2006
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3911163A (en) * | 1973-12-26 | 1975-10-07 | Xerox Corp | Solder coating process and apparatus |
CN1776022A (en) * | 2005-11-23 | 2006-05-24 | 邹志尚 | Hard composite nano ceramic film cladding for use on gear and shaft surface of gearbox |
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