CN102990308A - Laser grooving machining method of dry gas seal spiral groove - Google Patents
Laser grooving machining method of dry gas seal spiral groove Download PDFInfo
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- CN102990308A CN102990308A CN2012105289803A CN201210528980A CN102990308A CN 102990308 A CN102990308 A CN 102990308A CN 2012105289803 A CN2012105289803 A CN 2012105289803A CN 201210528980 A CN201210528980 A CN 201210528980A CN 102990308 A CN102990308 A CN 102990308A
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Abstract
The invention discloses a laser grooving machining method of a dry gas seal spiral groove, wherein a machining device is a 20W optical fiber marking machine. The machining method comprises the following steps of: (1) designing the shape of the dry gas seal spiral groove by special drawing software; (2) positioning, wherein a ring with outer diameter being is less than or equal to 100mm is positioned in a marking range, and a ring with outer diameter being more than 100mm is positioned by a groove-to-groove machining method; and (3) grooving which is implemented by selecting appropriate marking parameters of focal length, marking speed, effective vector step length, power, frequency and the like. The laser grooving method has the characteristics of having a wide application range, being applicable to machining surfaces of different materials and different shapes, ensuring no mechanical deformation of workpieces, no pollution, high speed, high accuracy, good repeatability, high automation degree, and the like, is used for machining logarithm spiral grooves, rectangular grooves and dual-trapezoid grooves, is especially suitable for machining shallow grooves, and has obvious effects of improving product quality and machining efficiency.
Description
Technical field
The present invention relates to a kind of spiral fluted processing method, relate to specifically a kind of dry gas seals spiral fluted laser grooving processing method.
Background technology
At present, dry gas seals is used more and more extensive, and the dynamic pressure groove on the sealing ring is the core technology of dry gas seals, and the quality of its crudy has determined the performance of product.In the process of research and development dry gas seals product, the greatest problem that runs into is how cutting on sealing ring, although consulted a large amount of documents and data, these documents and data just bias toward the theoretical research to various flute profiles, introduce various computational methods, to reach the optimized design of flute profile.But for how processing flute profile, not concrete discussion.
Summary of the invention
For the problem that existing dry gas seals helicla flute processing method aspect exists, the invention provides that a kind of method is simple, speed is fast, precision is high, good reproducibility, dry gas seals spiral fluted laser grooving processing method that automaticity is high.
The concrete technical measures that solve the problems of the technologies described above are:
A kind of dry gas seals spiral fluted laser grooving processing method is characterized in that:
(1) process equipment
The processing external diameter is less than or equal to the sealing ring 5 of 100mm, uses 20W optical fiber marking machine 1; The processing diameter is installed XY axle Feed table 2 and the indexing accuracy 1 of a precision 0.02mm greater than the sealing ring 5 of 100mm at 20W optical fiber marking machine 1
"The rotary table 3 of/lattice;
(2) processing method
1. design flute profile: for processing qualified flute profile at the sealing ring end face, at first should design flute profile, the dry gas seals helicla flute of the mapping software of application specific design, it is made of two sections logatithmic spirals and the circular arc on dynamic pressure groove 10, sealing weir 20 and sealing dam 30;
2. locate
When a. the external diameter of sealing ring 5 is less than or equal to 100mm, locate within the mark scope: the ring plate of every kind of different-diameter all needs positioning mould for processing 51, get out diameter less than the centre bore 52 of 0.5mm at positioning clamping fixture 51 centers, adjust XY Feed table 2, mold centre bore 52 is overlapped with laser spots, get the position line circle 53 concentric with centre bore on the mold surface with laser in addition, diameter is less than mold diameter 5～10mm, measure circle to the marginate distance of tire, finely tune again XY Feed table 2, make the concentricity of the two be less than or equal to 0.05mm, the endoporus of sealing ring and the excircle orientation of mold, both process grindings, the mold Quenching Treatment, the gap is less than or equal to 0.02mm;
Location when b. the external diameter of sealing ring 5 is greater than 100mm: take the way by groove processing, method according to aforementioned a before the processing is located, behind the ring plate location, make sealing ring 5 move to L in Y direction by XY worktable 2, a groove can be arranged at least in the mark scope, when mapping, allow helicla flute be offset the L distance simultaneously, add man-hour, the groove that will be positioned within the mark scope first carves, then pass through one by one calibration of rotary table 3, when the movement by sealing ring 5, in the time of placing two or more helicla flute within the mark scope, a plurality of grooves are disposable to be got;
3. cutting
The cutting parameter is as follows:
Focal length: 250～260mm;
Mark speed: 1000～2000mm/s;
Effective vector step-length: 0.01mm;
Power: 40%～90%;
Frequency: 5～10kHz.
Beneficial effect of the present invention: Laser Processing is the high-energy that utilizes laser, carries out the hot worked a kind of method of industry, and laser energy is vaporized material, melt and removes within the extremely short time.Compare with other processing method, the laser incising channel process has widely applicable, different materials, difform finished surface all are fit to, have the distortion of workpiece machinery-free, pollution-free, speed is fast, precision is high, good reproducibility, automaticity high, is particularly useful for shallow slot processing.The present invention utilizes 20W optical fiber marking machine to carry out laser grooving, and processing method is simple, and speed is fast, precision is high, good reproducibility, and automaticity is high, be used for the flute profiles such as processing logarithm helicla flute, rectangular channel, double trapezoid groove, have significant effect to improving the quality of products with working (machining) efficiency.
Description of drawings
Fig. 1 is dry gas seals spiral fluted structural representation;
Fig. 2 is the structural representation of dry gas seals helicla flute process equipment;
Fig. 3 is the cutting location schematic diagram of external diameter within the cutting scope of ring;
Fig. 4 is that the external diameter of ring is greater than the cutting location schematic diagram of 100mm.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is elaborated.
A kind of dry gas seals spiral fluted laser grooving processing method,
(1) process equipment
The core process equipment of laser grooving is the 20W optical fiber marking machine that make the Dazu Laser Science ﹠ Tech Co Ltd, Shenzhen City, the positioning accuracy of its hot spot and the smoothness of lines can reach 0.001mm, be specially adapted to repeatedly mark, the occasion that the degree of depth, smoothness, fineness is had strict demand, mark scope 100 * 100mm, excessive mark scope will affect power density and the mark precision of hot spot.In the process of cutting, the dynamic pressure groove that requirement is carved is uniform centered by the center of circle of ring, and the center of circle that therefore must guarantee laser spot center and ring is on same point, and this just need to carry out centering before mark.In order to guarantee the centering precision and to expand the range of work, can processing surpass the mark scope, diameter is greater than the sealing ring of 100mm, " the rotary table 3 of/lattice; laser head 4; sealing ring 5 places on the rotary table 3; as shown in Figure 2; sealing ring is fixed on the working face of rotary table 3 by the mold of designed, designed; the center of circle that guarantees sealing ring and the Deviation Control in the working face center of circle can realize by such transformation that sealing ring XY direction is accurate and adjust and locate in 0.02mm at XY axle Feed table 2 and the indexing accuracy 1 of having set up respectively a feed accuracy 0.02mm on the marking machine on 1.
2) processing method
1. design flute profile
For processing qualified flute profile at the sealing ring end face, at first should design flute profile, as shown in Figure 1, and the dry gas seals helicla flute of the mapping software of application specific design, it is by dynamic pressure groove 10, and two sections logatithmic spirals and the circular arc on sealing weir 20 and sealing dam 30 consist of.
2.The location
A. when the external diameter of the sealing ring 5 processing location during less than or equal to 100mm as shown in Figure 3, sealing ring 5 can be placed within the mark scope shown in the dotted line, the helicla flute on the sealing ring 5 can once be got.The sealing ring of every kind of different-diameter all needs positioning mould for processing 51, when machining mould 51, get out diameter less than the centre bore 52 of 0.5mm at mold 51 centers, by adjusting XY Feed table 2, mold centre bore 52 is overlapped with the laser spots of laser head 4, do like this, can't guarantee fully that hot spot is concentric with the center of circle of mold, therefore, also need to get a position line circle 53 concentric with centre bore with laser on the mold surface, its diameter is less than mold cylindrical 5～10mm, measures circle to the marginate distance of tire, again by fine setting XY Feed table 2, make the two concentric, guarantee the concentricity of the two less than or equal to 0.05mm, sealing ring is by the excircle orientation of endoporus and mold, and both are through grinding, the mold Quenching Treatment, the gap is less than or equal to 0.02mm, and like this, the helicla flute that processes and the deviation at center can be less than 0.1mm.
B. when the external diameter of sealing ring 5 process during greater than 100mm as shown in Figure 4, at this moment the size of ring exceeds the mark scope, the helicla flute that distributes ring on can not disposablely be got, and therefore must take to pursue the way that groove is processed.Also be the first centering of palpus before the processing, the same Fig. 3 of the method for centering.Behind the ring plate centering, make ring move the L distance in Y direction by XY worktable, can ensure at least a groove within the mark scope, when mapping, also will allow thread groove be offset the L distance simultaneously.Add man-hour, the groove that will be positioned within the mark scope first carves, and then by the rotary table calibration, because groove is uniform on circle, so the angle value of calibration each time is the same, what grooves is arranged, and just needs the calibration how many times.Also have a kind of situation, when the movement by ring, in the time of placing two or more helicla flute within the mark scope, these several grooves can once be got, and like this, can reduce the calibration number of times, improve cutting efficient.
3.Cutting
Cutting technique is selected with reference to the cutting parameter of conventional 20W optical fiber marking machine, and the helicla flute degree of depth of dry gas seals is 0.0025～0.01mm, in order to process qualified groove depth, must select suitable mark parameter.The parameter that affects groove depth has focal length, mark speed, effective vector step-length, power, frequency etc.Laser is the light beam that energy height is concentrated, and only just can process at focal plane, therefore must focus before each cutting, and laser spot is focused on the sealing ring surface, obtains best cutting effect.In actual cutting process, helix is the small straight line convergence walked by laser spots, and this will control effective vector step-length well, and step-length is larger, and lines are more coarse; Step-length is less, and efficient is lower; Power is the intensity of marking machine Output of laser, and the needed laser intensity of different materials is different; Frequency is the quantity of unit interval inner laser point, controls this parameter, and the flatness of groove depth and bottom land is had material impact, and the mark rate is to the roughness of groove face.Suitable mark parameter is as follows:
Focal length: 250～260mm;
Mark speed: 1000～2000mm/s;
Effective vector step-length: 0.01mm;
Power: 40%～90%;
Frequency: 5～10kHz.
Claims (1)
1. dry gas seals spiral fluted laser grooving processing method is characterized in that:
(1) process equipment
The processing external diameter is less than or equal to the sealing ring (5) of 100mm, uses 20W optical fiber marking machine (1); The processing diameter is installed XY axle Feed table (2) and the indexing accuracy 1 of a precision 0.02mm greater than the sealing ring (5) of 100mm at 20W optical fiber marking machine (1)
"The rotary table of/lattice (3);
(2) processing method
1. design flute profile
For processing qualified flute profile at the sealing ring end face, at first should design flute profile, the dry gas seals helicla flute of the mapping software of application specific design, it is by two sections logatithmic spirals and the circular arc formation on dynamic pressure groove (10), sealing weir (20) and sealing dam (30);
2. locate
When a. the external diameter of sealing ring (5) is less than or equal to 100mm, locate within the mark scope: the ring plate of every kind of different-diameter all needs positioning mould for processing (51), get out diameter less than the centre bore (52) of 0.5mm at positioning clamping fixture (51) center, adjust XY Feed table (2), mold centre bore (52) is overlapped with laser spots, get the position line circle (53) concentric with centre bore on the mold surface with laser in addition, diameter is less than mold diameter 5～10mm, measure circle to the marginate distance of tire, finely tune again XY Feed table (2), make the concentricity of the two be less than or equal to 0.05mm, the endoporus of sealing ring and the excircle orientation of mold, both process grindings, the mold Quenching Treatment, the gap is less than or equal to 0.02mm;
Location when b. the external diameter of sealing ring (5) is greater than 100mm: take the way by groove processing, method according to aforementioned (a) before the processing is located, behind the ring plate location, make sealing ring (5) move to L in Y direction by XY worktable (2), a groove can be arranged at least in the mark scope, when mapping, allow helicla flute be offset the L distance simultaneously, add man-hour, the groove that will be positioned within the mark scope first carves, then pass through one by one calibration of rotary table (3), when the movement by sealing ring (5), in the time of placing two or more helicla flute within the mark scope, a plurality of grooves are disposable to be got;
3. cutting
The cutting parameter is as follows:
Focal length: 250～260mm;
Mark speed: 1000～2000mm/s;
Effective vector step-length: 0.01mm;
Power: 40%～90%;
Frequency: 5～10kHz.
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| CN201210528980.3A CN102990308B (en) | 2012-12-11 | 2012-12-11 | Laser grooving machining method of dry gas seal spiral groove |
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| CN201210528980.3A CN102990308B (en) | 2012-12-11 | 2012-12-11 | Laser grooving machining method of dry gas seal spiral groove |
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| CN102990308B CN102990308B (en) | 2015-05-13 |
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Cited By (9)
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| CN103753145A (en) * | 2014-01-20 | 2014-04-30 | 华侨大学 | Method for manufacturing small molds |
| CN103934727A (en) * | 2014-04-09 | 2014-07-23 | 大连理工大学 | Equiangular spiral line partition variable parameter control precision machining method |
| CN106735915A (en) * | 2016-11-22 | 2017-05-31 | 天津航空机电有限公司 | A kind of stainless steel laser of anti-corrosion is carved characters method |
| CN110091125A (en) * | 2019-04-12 | 2019-08-06 | 沈阳透平机械股份有限公司 | A kind of pipeline compressor air duct flange sealing surface water wave line processing method |
| CN111386414A (en) * | 2018-10-31 | 2020-07-07 | Nok株式会社 | Surface processing method for disc member of sealing device and sealing device |
| CN111889893A (en) * | 2020-07-07 | 2020-11-06 | 江苏海洋大学 | Ultrashort pulse laser precision machining method for dry gas sealed micron-sized groove |
| CN112570778A (en) * | 2020-11-27 | 2021-03-30 | 上海五钢设备工程有限公司 | Method for equally dividing circumference of irregular spiral groove |
| US11053905B2 (en) | 2013-09-03 | 2021-07-06 | Robert Bosch Gmbh | Holder and system having a fuel rail and multiple holders |
| CN114603247A (en) * | 2022-04-18 | 2022-06-10 | 昆明理工大学 | Laser high-efficiency precision machining method for dry gas sealing spiral groove based on ACE method |
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Cited By (14)
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|---|---|---|---|---|
| US11053905B2 (en) | 2013-09-03 | 2021-07-06 | Robert Bosch Gmbh | Holder and system having a fuel rail and multiple holders |
| CN103753145A (en) * | 2014-01-20 | 2014-04-30 | 华侨大学 | Method for manufacturing small molds |
| CN103934727A (en) * | 2014-04-09 | 2014-07-23 | 大连理工大学 | Equiangular spiral line partition variable parameter control precision machining method |
| CN103934727B (en) * | 2014-04-09 | 2016-04-06 | 大连理工大学 | A kind of equiangular helical spiral subregion variable element control precision machining method |
| CN106735915A (en) * | 2016-11-22 | 2017-05-31 | 天津航空机电有限公司 | A kind of stainless steel laser of anti-corrosion is carved characters method |
| CN111386414A (en) * | 2018-10-31 | 2020-07-07 | Nok株式会社 | Surface processing method for disc member of sealing device and sealing device |
| US11698105B2 (en) | 2018-10-31 | 2023-07-11 | Nok Corporation | Surface processing method of disk member of sealing apparatus, and sealing apparatus |
| CN110091125B (en) * | 2019-04-12 | 2020-06-23 | 沈阳透平机械股份有限公司 | Method for machining water line of sealing surface of air duct flange of compressor for pipeline |
| CN110091125A (en) * | 2019-04-12 | 2019-08-06 | 沈阳透平机械股份有限公司 | A kind of pipeline compressor air duct flange sealing surface water wave line processing method |
| CN111889893A (en) * | 2020-07-07 | 2020-11-06 | 江苏海洋大学 | Ultrashort pulse laser precision machining method for dry gas sealed micron-sized groove |
| CN111889893B (en) * | 2020-07-07 | 2021-12-03 | 江苏海洋大学 | Ultrashort pulse laser precision machining method for dry gas sealed micron-sized groove |
| CN112570778A (en) * | 2020-11-27 | 2021-03-30 | 上海五钢设备工程有限公司 | Method for equally dividing circumference of irregular spiral groove |
| CN114603247A (en) * | 2022-04-18 | 2022-06-10 | 昆明理工大学 | Laser high-efficiency precision machining method for dry gas sealing spiral groove based on ACE method |
| CN114603247B (en) * | 2022-04-18 | 2024-04-05 | 昆明理工大学 | ACE method-based efficient and precise dry gas seal spiral groove laser machining method |
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| CN102990308B (en) | 2015-05-13 |
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