Influence of Tool Posture and Position on Stability in Milling with Parallel Kinematic Machine Tool

2020 ◽  
Vol 21 (12) ◽  
pp. 2359-2373
Author(s):  
Muizuddin Azka ◽  
Keiji Yamada ◽  
Mahfudz Al Huda ◽  
Ryutaro Tanaka ◽  
Katsuhiko Sekiya
Keyword(s):  
Machine Tool ◽  
Parallel Kinematic Machine ◽  
Tool Posture ◽  
Parallel Kinematic

Efficient Simulation of Parallel Kinematic Machine Tools

2009 ◽  
Author(s):  
Martin Kipfmu¨ller ◽  
Christian Munzinger
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Development Process ◽  
Special Focus ◽  
Full Potential ◽  
Parallel Kinematic Machine ◽  
Machine Tool Industry ◽  
Simulation Tools ◽  
Parallel Kinematic ◽  
Parallel Kinematic Machine Tools

Today’s machine tool industry mainly consists of small and medium-sized enterprises. Thus, the simulation of new products often does not seem to be cost effective due to the small number of items produced and the high cost of simulation tools. Nevertheless, the use of simulation tools is essential in order to tap the full potential of new challenging concepts like parallel kinematic machines. This paper presents a simulation method supporting the development process of parallel kinematic machine tools from the first concept to the prototype. In order to render the method applicable for the machine tool industry, a special focus is placed on tool efficiency. A modular modeling concept will ensure that the structure of the first kinematic model of the concept phase can be enhanced during the development process and developed into more detailed models, e.g. for dimensioning calculations or to study the dynamic behavior of machine tools. Thus, the method efficiently supports the whole development process with a simulation model gradually increasing in detail according to the requirements of the machine tool designer.

S1301-2-4 A Study on Process Planning for a Parallel Kinematic Machine Tool

2009 ◽  
Vol 2009.4 (0) ◽  
pp. 239-240
Author(s):  
Akihito YAMAMOTO ◽  
Keiichi NAKAMOTO ◽  
Keiichi SHIRASE
Keyword(s):  
Machine Tool ◽  
Process Planning ◽  
Parallel Kinematic Machine ◽  
Parallel Kinematic

Error modeling and sensitivity analysis of a novel 5-degree-of-freedom parallel kinematic machine tool

2018 ◽  
Vol 233 (6) ◽  
pp. 1637-1652 ◽  
Author(s):  
Xuan Luo ◽  
Fugui Xie ◽  
Xin-Jun Liu ◽  
Jie Li
Keyword(s):  
Sensitivity Analysis ◽  
Machine Tool ◽  
Jacobian Matrix ◽  
Error Modeling ◽  
Degree Of Freedom ◽  
Geometric Errors ◽  
Parallel Kinematic Machine ◽  
Parallel Kinematic ◽  
Position And Orientation ◽  
Five Axis

5-Degree-of-freedom parallel kinematic machine tools are always attractive in manufacturing industry due to the ability of five-axis machining with high stiffness/mass ratio and flexibility. In this article, error modeling and sensitivity analysis of a novel 5-degree-of-freedom parallel kinematic machine tool are discussed for its accuracy issues. An error modeling method based on screw theory is applied to each limb, and then the error model of the parallel kinematic machine tool is established and the error mapping Jacobian matrix of 53 geometric errors is derived. Considering that geometric errors exert both impacts on value and direction of the end-effector’s pose error, a set of sensitivity indices and an easy routine for sensitivity analysis are proposed according to the error mapping Jacobian matrix. On this basis, 10 vital errors and 10 trivial errors are identified over the prescribed workspace. To validate the effects of sensitivity analysis, several numerical simulations of accuracy design are conducted, and three-dimensional model assemblies with relevant geometric errors are established as well. The simulations exhibit maximal −0.10% and 0.34% improvements of the position and orientation errors, respectively, after modifying 10 trivial errors, while minimal 65.56% and 55.17% improvements of the position and orientation errors, respectively, after modifying 10 vital errors. Besides the assembly reveals an output pose error of (0.0134 mm, 0.0020 rad) with only trivial errors, while (2.0338 mm, 0.0048 rad) with only vital errors. In consequence, both results of simulations and assemblies validate the correctness of the sensitivity analysis. Moreover, this procedure can be extended to any other parallel kinematic mechanisms easily.

Machining with the WalkingHex: A walking parallel kinematic machine tool for in situ operations

CIRP Annals ◽  
2017 ◽  
Vol 66 (1) ◽  
pp. 361-364 ◽  
Author(s):  
A. Olarra ◽  
D. Axinte ◽  
L. Uriarte ◽  
R. Bueno
Keyword(s):  
Machine Tool ◽  
Parallel Kinematic Machine ◽  
Parallel Kinematic

scholarly journals Disturbance Estimation on a Hexapod-Type Parallel Kinematic Machine Tool by Using A Disturbance Observer

2004 ◽  
Vol 70 (694) ◽  
pp. 1764-1769 ◽  
Author(s):  
Soichi IBARAKI ◽  
Toshihiro OKUDA ◽  
Yoshiaki KAKINO ◽  
Masao NAKAGAWA ◽  
Tetsuya MATSUSHITA
Keyword(s):  
Machine Tool ◽  
Disturbance Observer ◽  
Parallel Kinematic Machine ◽  
Disturbance Estimation ◽  
Parallel Kinematic

Effects of design dimensions on the driving force variation of a hybrid TRR’XY parallel kinematic machine tool

2002 ◽  
Vol 216 (4) ◽  
pp. 571-589 ◽  
Author(s):  
T-H Chang ◽  
S-L Chen ◽  
Y-C Chang
Keyword(s):  
Machine Tool ◽  
Driving Force ◽  
Driving Forces ◽  
Basic Structure ◽  
Parallel Kinematic Machine ◽  
Machining Performance ◽  
Machining Processes ◽  
Research Fields ◽  
Force Variation ◽  
Parallel Kinematic

Using parallel-link mechanism as the basic structure of the parallel kinematic machine (PKM) tool is a new design concept and has become one of the most important research fields, attracting many previous researchers. Research on the actuator driving force variation of a PKM tool is essential for the applications of a PKM tool to real machining processes. For machining a component, the smaller actuator driving force required means that the PKM tool has a higher machining performance. To improve the machining performance, understanding of the required actuator driving is very important. A generalized force analysis of the developed system was obtained using the Denavit-Hartenberg (D-H) notation method. The force reactions on the joints and actuator driving forces are obtained on the basis of various cutter locations and a given external cutting force. The prediction of the cutter location with the singularity condition can be also obtained on the basis of the infinite force of the joints. The geometry relationship between the tool platform and the links is adopted to verify the singularity conditions of the system. The driving force variation of the hybrid TRR- XY five-degree-of-freedom machine tool is further investigated.

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