For woodworking CNC lathe processing for the interpretation of position detection device

by:Gewinn     2020-04-29
Position detection system is an important part in woodworking CNC lathe servo system. Because of its role in the numerical control system is more important, so detection is more strict. So what is the test contents and requirements? Its main function is to detect displacement, and detects the feedback signal and the numerical control device signal instructions, if any deviation, then control execution parts to eliminate the direction deviation, which constitute the closed loop of the servo system or half closed loop control. Woodworking CNC lathe machining accuracy is mainly composed of the precision of the detection system. Position detection system can measure the minimum displacement is called resolution. Generally requires the resolution of the measuring element in 0. 0001-0. 01 mm, measurement accuracy is 0. 001-0. 02 mm, speed of 0 ~ 24 m/min. Different types of woodworking CNC lathe, the position detection element, the precision of the detection system and the highest speed unit under test requirements vary. With the development of woodworking CNC lathes, precision and speed is higher and higher, some machine tool positioning accuracy reached plus or minus 0. 002 mm / 300 m, the spindle speed reached 100000 r/min, the unit under test the highest speed of up to 240 m/min, the resolution of the displacement of the test ( To detect the minimum displacement) Can reach 1 microns. The highest resolution in 0. 01μm。 Woodworking CNC lathe for the position detection device requirements: 1. Reliable operation, small under the influence of temperature, humidity, can long-term accuracy; Anti-interference ability is strong, can resist all kinds of electromagnetic interference, etc. 2. Easy to install and maintain, to adapt to the machine working environment. Request has the certain installation accuracy measurement system, installation to reasonable accuracy, due to the effect of using the environment, the whole measurement system requirements have better dust, oil mist, prevent the measures such as chip. 3. Low cost, long service life. 4. To meet the requirements of the machine tool precision and speed, in machine tool parts movement range and the displacement speed limit conditions, detection device to achieve certain accuracy and smaller cumulative error. Test efficiency is very high, use requirements also more and more high, the numerical control technology is also in constant increase.
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