Layered laser vaporization of PMMA manufacturing 3D mould cavities

被引：26
作者：
Romoli, L. [1 ]
Tantussi, G. [1 ]
Dini, G. [1 ]
机构：
[1] Univ Pisa, Dept Mech Nucl & Prod Engn, I-56100 Pisa, Italy
来源：
CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2007年 / 56卷 / 01期
关键词：
LBM; mould; PMMA;
D O I：
10.1016/j.cirp.2007.05.050
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper deals with an innovative technique concerning CO2 laser machining in order to create 3D cavities to be used as moulds for the casting of polymer resins, vaporizing PMMA layer by layer. The removal of a single layer is achieved using multiple overlapping straight grooves. The groove profile (depth and width) has been predicted by theoretical models which investigate the influence of cutting sequence, number of passes, laser beam scanning speed and radiant flux. The removal depth varies proportionally with the number of layers, while the surface roughness, influenced by the grooves spacing and the orientation of the scanning direction between successive layers, cannot be decreased under a minimum value.
引用
收藏
页码：209 / 212
页数：4
相关论文
共 12 条
  • [1] Kinetics and mechanisms of flash pyrolysis of poly(methyl methacrylate) (PMMA)
    Arisawa, H
    Brill, TB
    [J]. COMBUSTION AND FLAME, 1997, 109 (03) : 415 - 426
  • [2] CW CO2 laser cutting of plastics
    Atanasov, PA
    Baeva, MG
    [J]. XI INTERNATIONAL SYMPOSIUM ON GAS FLOW AND CHEMICAL LASERS AND HIGH-POWER LASER CONFERENCE, 1997, 3092 : 772 - 775
  • [3] Berry J.W., 1980, HDB CROSS CULTURAL P, P1
  • [4] BERZINS M, 1996, ANN CIRP, V45, P187
  • [5] Failure of rapid prototype molds during injection molding
    Colton, JS
    Crawford, J
    Pham, G
    Rodet, V
    [J]. CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2001, 50 (01) : 129 - 132
  • [6] The effect of polymerisation conditions on the kinetics and mechanisms of thermal degradation of PMMA
    Holland, BJ
    Hay, JN
    [J]. POLYMER DEGRADATION AND STABILITY, 2002, 77 (03) : 435 - 439
  • [7] The numerical simulation of the noncharring pyrolysis process and fire development within a compartment
    Jia, F
    Galea, ER
    Patel, MK
    [J]. APPLIED MATHEMATICAL MODELLING, 1999, 23 (08) : 587 - 607
  • [8] ROMOLI L, 2005, THESIS U PISA
  • [9] SATO H, 2001, PHOTOCHEM PHOTOBIO C, V2, P139
  • [10] Microstructure fabrication with a CO2 laser system
    Snakenborg, D
    Klank, H
    Kutter, JP
    [J]. JOURNAL OF MICROMECHANICS AND MICROENGINEERING, 2004, 14 (02) : 182 - 189
12