Improvement on a CNC Gantry Machine Structure Design for Higher Machining Speed Capability
The capability of CNC gantry milling machines in
manufacturing long components has caused the expanded use of such
machines. On the other hand, the machines’ gantry rigidity can
reduce under severe loads or vibration during operation. Indeed, the
quality of machining is dependent on the machine’s dynamic
behavior throughout the operating process. For this reason, these
types of machines have always been used widely and are not
efficient. Therefore, they can usually be employed for rough
machining and may not produce adequate surface finishing. In this
paper, a CNC gantry milling machine with the potential to produce
good surface finish has been designed and analyzed. The lowest
natural frequency of this machine is 202 Hz corresponding to 12000
rpm at all motion amplitudes with a full range of suitable frequency
responses. Meanwhile, the maximum deformation under dead loads
for the gantry machine is 0.565*m, indicating that this machine tool
is capable of producing higher product quality.
[1] Sencer, B., Y. Altintas, and E. Croft, Feed optimization for five-axis
CNC machine tools with drive constraints. International Journal of
Machine Tools and Manufacture, 2008. 48(7–8): p. 733-745.
[2] Raksiri, C. and M. Parnichkun, Geometric and force errors
compensation in a 3-axis CNC milling machine. International Journal of
Machine Tools & Manufacture, 2004. 44(12): p. 1283-1291.
[3] Suh, J. and D. Lee, Design and manufacture of hybrid polymer concrete
bed for high-speed CNC milling machine. International Journal of
Mechanics and Materials in Design, 2008. 4(2): p. 113-121.
[4] Fansen, K. and Y. Junyi, Fuzzy dynamic response analysis of machine
tool structure. International Journal of Machine Tools and Manufacture,
1999. 39(12): p. 1993-2002.
[5] Albertelli, P., et al., The effects of dynamic interaction between machine
tool subsystems on cutting process stability. The International Journal of
Advanced Manufacturing Technology, 2012. 58(9-12): p. 923-932.
[6] Du, H., C. Zhao, and W. Wu, Stability criteria based on argument
principle of a general dynamical system in cutting process. The
International Journal of Advanced Manufacturing Technology, 2013,
DOI: 10.1007/s00170-013-5313-2.
[7] Biermann, D. and A. Baschin, Influence of cutting edge geometry and
cutting edge radius on the stability of micromilling processes.
Production Engineering, 2009. 3(4-5): p. 375-380.
[8] Murakami, T., et al., Damping and tribological properties of Fe–Si–C
cast iron prepared using various heat treatments. Materials Science and
Engineering: A, 2006. 432(1–2): p. 113-119.
[9] Zhang, Y., et al., The Theory of Response Analysis of Fuzzy Stochastic
Dynamical Systems With a Single Degree of Freedom. Earthquake
Engineering & Structural Dynamics, 1996. 25(3): p. 235-251.
[10] Mehta, N.K., Machine tool design and numerical control1996, New
Delhi: Tata McGraw-Hill Pub.
[11] Yin, J., M. Li, and C. Xu, Geometric Errors Measurement of a Large
Scale Five-Axis Gantry Type High Speed Machine Tool,Advances in
Automation and Robotics, Vol.1, Lecture Notes in Electrical
Engineering Volume 122, 2012, pp 93-99.
[12] Lamikiz, A., et al., The Denavit and Hartenberg approach applied to
evaluate the consequences in the tool tip position of geometrical errors
in five-axis milling centres. The International Journal of Advanced
Manufacturing Technology, 2008. 37(1-2): p. 122-139.
[13] Lamikiz, A., L.N. López de Lacalle, and A. Celaya, Machine Tool
Performance and Precision, in Machine Tools for High Performance
Machining, 2009, Springer London. p. 219-260.
[14] Olvera, D., et al., Analysis of the tool tip radial stiffness of turn-milling
centers. The International Journal of Advanced Manufacturing
Technology, 2012. 60(9-12): p. 883-891.
[15] Hung, J.-P., and e. al., Modeling the machining stability of a vertical
milling machine under the influence of the preloaded linear guide.
International Journal of Machine Tools and Manufacture, 2011. 51(9): p.
731-739.
[1] Sencer, B., Y. Altintas, and E. Croft, Feed optimization for five-axis
CNC machine tools with drive constraints. International Journal of
Machine Tools and Manufacture, 2008. 48(7–8): p. 733-745.
[2] Raksiri, C. and M. Parnichkun, Geometric and force errors
compensation in a 3-axis CNC milling machine. International Journal of
Machine Tools & Manufacture, 2004. 44(12): p. 1283-1291.
[3] Suh, J. and D. Lee, Design and manufacture of hybrid polymer concrete
bed for high-speed CNC milling machine. International Journal of
Mechanics and Materials in Design, 2008. 4(2): p. 113-121.
[4] Fansen, K. and Y. Junyi, Fuzzy dynamic response analysis of machine
tool structure. International Journal of Machine Tools and Manufacture,
1999. 39(12): p. 1993-2002.
[5] Albertelli, P., et al., The effects of dynamic interaction between machine
tool subsystems on cutting process stability. The International Journal of
Advanced Manufacturing Technology, 2012. 58(9-12): p. 923-932.
[6] Du, H., C. Zhao, and W. Wu, Stability criteria based on argument
principle of a general dynamical system in cutting process. The
International Journal of Advanced Manufacturing Technology, 2013,
DOI: 10.1007/s00170-013-5313-2.
[7] Biermann, D. and A. Baschin, Influence of cutting edge geometry and
cutting edge radius on the stability of micromilling processes.
Production Engineering, 2009. 3(4-5): p. 375-380.
[8] Murakami, T., et al., Damping and tribological properties of Fe–Si–C
cast iron prepared using various heat treatments. Materials Science and
Engineering: A, 2006. 432(1–2): p. 113-119.
[9] Zhang, Y., et al., The Theory of Response Analysis of Fuzzy Stochastic
Dynamical Systems With a Single Degree of Freedom. Earthquake
Engineering & Structural Dynamics, 1996. 25(3): p. 235-251.
[10] Mehta, N.K., Machine tool design and numerical control1996, New
Delhi: Tata McGraw-Hill Pub.
[11] Yin, J., M. Li, and C. Xu, Geometric Errors Measurement of a Large
Scale Five-Axis Gantry Type High Speed Machine Tool,Advances in
Automation and Robotics, Vol.1, Lecture Notes in Electrical
Engineering Volume 122, 2012, pp 93-99.
[12] Lamikiz, A., et al., The Denavit and Hartenberg approach applied to
evaluate the consequences in the tool tip position of geometrical errors
in five-axis milling centres. The International Journal of Advanced
Manufacturing Technology, 2008. 37(1-2): p. 122-139.
[13] Lamikiz, A., L.N. López de Lacalle, and A. Celaya, Machine Tool
Performance and Precision, in Machine Tools for High Performance
Machining, 2009, Springer London. p. 219-260.
[14] Olvera, D., et al., Analysis of the tool tip radial stiffness of turn-milling
centers. The International Journal of Advanced Manufacturing
Technology, 2012. 60(9-12): p. 883-891.
[15] Hung, J.-P., and e. al., Modeling the machining stability of a vertical
milling machine under the influence of the preloaded linear guide.
International Journal of Machine Tools and Manufacture, 2011. 51(9): p.
731-739.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:69534", author = "Ahmed A. D. Sarhan and S. R. Besharaty and Javad Akbaria and M. Hamdi", title = "Improvement on a CNC Gantry Machine Structure Design for Higher Machining Speed Capability", abstract = "The capability of CNC gantry milling machines in
manufacturing long components has caused the expanded use of such
machines. On the other hand, the machines’ gantry rigidity can
reduce under severe loads or vibration during operation. Indeed, the
quality of machining is dependent on the machine’s dynamic
behavior throughout the operating process. For this reason, these
types of machines have always been used widely and are not
efficient. Therefore, they can usually be employed for rough
machining and may not produce adequate surface finishing. In this
paper, a CNC gantry milling machine with the potential to produce
good surface finish has been designed and analyzed. The lowest
natural frequency of this machine is 202 Hz corresponding to 12000
rpm at all motion amplitudes with a full range of suitable frequency
responses. Meanwhile, the maximum deformation under dead loads
for the gantry machine is 0.565*m, indicating that this machine tool
is capable of producing higher product quality.
", keywords = "Finite element, frequency response, gantry design,
gantry machine, static and dynamic analysis.", volume = "9", number = "4", pages = "587-5", }
