Chinese Journal of Lasers, Volume. 48, Issue 18, 1802019(2021)
Printing-Time-Estimation Algorithm for Selective Laser Melting Multi-Galvanometer System
Figures & Tables(11)
Fig. 2. Program flow chart of the printing time estimation algorithm of the SLM multi-galvanometer system
Fig. 3. Experimental process parameters and sample information. (a) Appearance of DiMetal-450; (b) print sample model
Fig. 4. Experimental results. (a) Scanning system time estimation and actual time fitting effect diagram; (b) scanning system deviation rate and proportional coefficient change trend
Fig. 5. Experimental results. (a) Time estimation effect diagram of printing task; (b) change of printing time estimation deviation rate
Table 1. Process parameters that affect time estimation
View tableTable 1. Process parameters that affect time estimation
Polygon type VMark/(mm·s-1) VJump/(mm·s-1) tmDelay/μs tpDelay/μs tjDelay/μs por P /W Fill 3000 2000 1000 550 3000 (0,0) 480 Counter 2000 2000 1000 550 3000 (0,0) 380
Table 2. Basic information of experimental samples
View tableTable 2. Basic information of experimental samples
Volume /mm3 Slice thickness /μm Number of slices Material Part type 1382663.404 50 1000 316L Solid
Table 3. Slice scanning path strategy
View tableTable 3. Slice scanning path strategy
Layer type Space /mm Type of fill Fill mode Block size /(mm×mm) Scan region Odd layer 0.1 Straight line whole -- Evenly split Even layer 0.1 Straight line block 40×40 Evenly split
Table 4. Actual running time parameters of experimental samples
View tableTable 4. Actual running time parameters of experimental samples
Layer number /s /s /s /s 256 124 130 18 4 304 123 130 18 4 352 122 129 18 4 404 120 125 18 4 452 118 121 18 4 504 115 117 18 4 552 109 113 18 4 604 62 56 18 4 652 62 56 18 4 704 62 56 18 4 752 62 56 18 4 804 61 56 18 4 852 62 57 18 4 904 43 39 18 4 952 43 38 18 4 996 43 38 18 4
Table 5. Scanning system time estimation analysis
View tableTable 5. Scanning system time estimation analysis
Layer number /s /s β /s pl/% 256 130 140.007 0.9258 129.618 -0.2943 304 130 140.942 0.9254 130.428 0.3279 352 129 140.473 0.9230 129.657 0.5063 404 125 136.575 0.9212 125.812 0.6461 452 121 132.590 0.9195 121.917 0.7517 504 117 128.738 0.9178 118.156 0.9781 552 113 124.482 0.9165 114.088 0.9534 604 56 63.362 0.9144 57.938 3.3453 652 56 63.180 0.9128 57.670 2.8969 704 56 63.180 0.9113 57.576 2.7371 752 56 63.181 0.9100 57.495 2.5997 804 56 63.170 0.9088 57.409 2.4541 852 57 63.165 0.9085 57.385 0.6716 904 39 43.424 0.9082 39.438 1.1098 952 38 43.423 0.9072 39.393 3.5370 996 38 43.421 0.9062 39.348 3.4261
Table 6. Practical analysis of time estimation for printing tasks
View tableTable 6. Practical analysis of time estimation for printing tasks
Layer number Working time /h Estimate working time /h pt/% Estimate remaining time /h twork/h 256 15.9289 16.0245 -0.5966 20.7961 36.8206 304 18.0089 18.0990 -0.4978 18.8811 36.9801 352 19.7422 19.8334 -0.4598 17.1080 36.9414 404 21.6055 21.7062 -0.4639 15.1519 36.8581 452 23.4588 23.5828 -0.5258 13.4316 37.0144 504 25.4088 25.5428 -0.5246 11.0626 36.6053 552 27.1555 27.3026 -0.5388 9.2898 36.5924 604 28.9900 29.1490 -0.5455 7.4261 36.5751 652 29.9233 30.1068 -0.6095 6.4579 36.5648 704 30.9344 31.1301 -0.6287 5.4157 36.5458 752 31.9455 32.0833 -0.4295 4.6430 36.7264 804 32.9566 33.1149 -0.4780 3.4201 36.5351 852 33.9000 34.0968 -0.5772 2.4674 36.5642 904 34.9255 35.1236 -0.5640 1.4359 36.5595 952 35.6322 35.8355 -0.5673 0.7073 36.5428 996 36.2678 36.4875 -0.6021 0.0328 36.5203 999 36.3111 36.5213 -0.5756 0 36.5213
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Fengqiang Weng, Yongqiang Yang, Xin Chen, Yang Li. Printing-Time-Estimation Algorithm for Selective Laser Melting Multi-Galvanometer System[J]. Chinese Journal of Lasers, 2021, 48(18): 1802019
Paper Information
Category: laser manufacturing
Received: Mar. 26, 2021
Accepted: May. 17, 2021
Published Online: Sep. 8, 2021
The Author Email: Yang Yongqiang (meyqyang@163.com)
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