- Tytuł:
-
Ocena dokładności stolika liniowego i obrotowego z silnikiem krokowym
Assessment of accuracy of a linear and rotary table with step motor - Autorzy:
- Żurawski, Ł.
- Powiązania:
- https://bibliotekanauki.pl/articles/155814.pdf
- Data publikacji:
- 2014
- Wydawca:
- Stowarzyszenie Inżynierów i Techników Mechaników Polskich
- Tematy:
-
silnik krokowy
mikrokontroler
monitorowanie
błąd pomiaru
step motor
microcontroller
monitoring
error of measurement - Opis:
-
W artykule przedstawiono metodę wyznaczenia błędów przesuwu i obrotu stolików z silnikiem krokowym. W badaniach wykorzystano mikrokontroler AVR ATMega 16-16PI do sterowania stolikami oraz stanowisko optyczne do obserwacji i akwizycji obrazów cyfrowych przesunięcia wzorców kreskowych o długości 1 mm i wartości działki elementarnej 0,01 mm. Błąd pomiaru oceniano dla prędkości przesuwu stolika liniowego (10, 30, i 66 mm/min) oraz prędkości obrotowej dla stolika obrotowego (0,22, 0,65, 2,14 obr/min). Uzyskane wyniki badań opracowano statystycznie i podano częstość występowania błędu pomiaru.
Contemporary machine tools used for materials machining are made of a number of modulus featuring modern kinematic and structural solutions. They provide relatively quick, effective and accurate performance of the shaping of surfaces of manufactured machinery and device part processes. The modular structure has been defined as a system of units and single parts that make the entire technological machine. The modules occur in various mounting and intended machining combinations depending on the machining process performed [1].Numerically controlled machines NC/CNC comprise modules based on guide rolling, guide ball screws and direct gears [2], which have a variable number of fixed headstocks with additional independent drive control devices [3, 4]. To drive the modules a wide range of direct and alternating current electrical motors, electrospindles (used as main drives), servo-drives as well as linear and rotating step motors (used in feed drives) are used [1]. Similar structural and driving solutions can be seen in mini machine tools, milling and engraving machines as well as small-size table machine tools. Step motors with wide range of the turning moment are used in such machine tools to shift the units or modules. Such solutions are applied mainly to enhance technological possibilities of machine tools and to achieve high accuracy of the manufactured machined objects [5]. In this paper selected results concerning assessment of positioning errors of two precise measuring tables equipped with step motors performing linear and rotary movements have been presented. Measurements were performed for three various shift and rotation speeds. A specially arranged stand to monitor the performed movement using digital vision technique and digital images acquisition for shifting of 1 mm stage objects micrometer was used. AVR microcontroller ATMega 16-16PI for table control operations was used. A methodology of error determination was developed and the most important acquired results were presented in form of bar charts. The measurement method can be applied in those machine tools that have step-type drives. - Źródło:
-
Pomiary Automatyka Kontrola; 2014, R. 60, nr 10, 10; 876-878
0032-4140 - Pojawia się w:
- Pomiary Automatyka Kontrola
- Dostawca treści:
- Biblioteka Nauki
Artykuł