Wyniki wyszukiwania - BazTech

1

Nowe obrabiarki firmy DMG MORI

Matuszewski Maciej

Obróbka Metalu

|

2019

|

nr 1

26--28

PL

Firma DMG MORI to ścisła czołówka wśród producentów obrabiarek. Ta międzynarodowa firma w jednym ze swoich zakładów w Pfronten co roku organizuje imprezę, na której prezentuje nowe obrabiarki. Zaproszeni goście mogą zapoznać się z zakładem, a także z jego produktami. W artykule przedstawiono wrażenia uczestnika tegorocznej edycji imprezy.

EN

DMG MORI is a leading manufacturer of machinetools. The international company holds an annual event at one of its plants in Pfronten, where it presents the new machine-tools. Invited guests can get acquainted with the plant and its products. In this paper the impression of the participants of this year’s editions of the event were presented.

2

Symulacja procesu obróbki w oparciu o utworzony model obrabiarki w programie Unigraphics

Monica Z., Ociepka P., Herbuś K.

Górnictwo Odkrywkowe

|

2008

|

R. 49/2, nr 4-5

110-113

PL

W artykule opisano zastosowanie programu Unigraphics NX4 do tworzenia programów NC. Przedstawiono proces modelowania obrabiarki, proces tworzenia postprocesora i proces generowania ścieżek narzędzia do obróbki ubytkowej części maszyn Zaprezentowano praktyczny przykład obróbki elementu.

EN

This paper presents the application of the Unigraphics NX4 system for creating NC programs. It has been presented the process of machine tool modeling, post-processor creating and a tool-paths generating for machining machine parts. The practical example of an element machining is also included.

3

Mathematical model for feed drive system in microscopic motion area

Yamazaki T.

Archives of Materials Science and Engineering

|

2008

|

Vol. 33, nr 1

35-38

EN

Purpose: Our objective is to develop an entirely new the feed drive system with the accuracy of tens nanometers and the stroke of tens millimetres achieved by only one mechanism. Design/methodology/approach: The dynamic driving torques can be measured when the sinusoidal waves of the microscopic displacement are applied to the AC servo motor. The mathematical model of the feed drive system that considers this dynamic behaviour is proposed. Findings: We make hysteresis phenomenon clear in the range from 2 μm to 100 μm by the nonlinear spring characteristics. Taking the friction model into account, the driving torque can be formulated. The proposed friction model represents successfully the experimental results for the sinusoidal wave within the ranges of amplitude from 2 μm to 100 μm. In case that the amplitude is 1 μm, though the amplitudes of the driving torque are slightly different, the curve shows the similar shape. Research limitations/implications: The results of this research covers the feed drive system with the AC servo motor and rolling guide. But, because the dynamic behaviour the rolling element was analyzed, it can be also applicable to the feed drive system with rolling element. Practical implications: This paper presents more details of driving torque in microscopic motion area, so that the performance of the feed drive system with rolling elements can be improved. Originality/value: The originality of this research project is to develop an entirely new feed drive system with the one mechanism and with the high accuracy.

4

Influence of machine tool model simplification on the evaluation of the vibration isolation effectiveness.

Witek A.

Postępy Technologii Maszyn i Urządzeń

|

1998

|

vol. 22, nr 2

113-125

EN

The methods and models elaborated for simple machines and devices can not be directly used in the computation of the machine tool vibration isolation, since these models do not allow for the description of dynamic phenomena which occur in the cutting zone. In the meantime these phenomena contitute a considerable factor in the multicriterial evaluation of the machine tool vibration isolation effectiveness. The paper attempts to answer the question, concerning how complex the machine tool vibration isolation model should be to obtain a credible estimation of the vibration isolation effectiveness and to get explicit relationship between the models parameters and the machine tool constructional parameters.

PL

W obliczeniach wibroizolacji obrabiarek nie można wprost stosować metod i modeli opracowanych dla innych, z reguły prostszych maszyn i urządzeń, gdyż modele te nie pozwalają opisać zjawisk dynamicznych zachodzących w strefie skrawania. Tymczasem zjawiska te stanowią istotny czynnik w wielokryterialnej ocenie skuteczności wibroizolacji obrabiarek. W referacie podjęto próbę odpowiedzi na pytanie: jak dalece musi być złożony model wibroizolowanej obrabiarki, by otrzymane na jego podstawie oszacowanie skuteczności wibroizolacji było wiarygodne, a parametry modelu jawnie zależały od parametrów konstrukcyjnych obrabiarki.