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Statistical Testing of Milled Objects on Numerically Controlled Three-Axis Milling Machines

Piórkowski Paweł, Skoczyński Wacław

Advances in Science and Technology. Research Journal

2021

Vol. 15, no 1

283--289

Statistical studies of the surface distribution of milled workpieces and the possibility of their use for operationbased tests and machine tool evaluation were presented. In the first part of the paper, the assumptions and scope of statistical research were defined and the method of obtaining data on machined surfaces directly from machining programs was described. In the following part of the article, the results of the research consisting in determining the probability of machining operations in the working space of a numerically controlled milling machine were presented on the example of machining programs designed for implementation on the DMC 1035V Ecoline vertical machining centre. The knowledge of the load distribution in the working space of a milling machine associated with the machining process can be used to design and manufacture the test pieces reflecting the machining tasks performed on the milling machine and to develop appropriate acceptance and evaluation procedures.

Router performance characteristics at different air pressure levels

Lechowicz Daniel, Grobleny Piotr, Podziewski Piotr, Szymanowski Karol, Pałubicki Bartosz

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2019

No. 106

72--77

Router performance characteristics at different air pressure levels. The aim of this study was to determine influence of the air pressure on the performance characteristics of wood plunge router. Temperature increase, amplitude of vibrations and power consumption at different air pressure levels were examined in this paper. The advantageous results obtained indicate the need for further research.

Charakterystyka wydajności frezarki przy różnych poziomach ciśnienia powietrza. Celem tego badania było określenie wpływu ciśnienia powietrza na charakterystyki pracy frezarki do drewna. W niniejszej pracy zbadano wzrost temperatury, amplitudę drgań i pobór mocy przy różnych poziomach ciśnienia powietrza. Uzyskane korzystne wyniki wskazują na potrzebę dalszych badań.

Comparison of Control Strategies for Active Vibration Control of Flexible Structures

Ehmann C., Nordmann R.

Archives of Control Sciences

2003

Vol. 13, no. 3

303-312

In recent years several strategies for active vibration control of weakly damped flexible structures have been presented. Depending on the type and location fo actuator and sensor different control strategies lead to different performance and robustness behaviour oh the closed loop. The aim of the paper is to present convenient actuator-sensor-controller combinations and to compare their closed loop performance. A test rig representing a gantry milling machine allows ti validate practical applicability.