Large precise magnetic levitation rotating workbench

• Main Authors: YUE ZHONGYU, XU JIN, REN CHANGZHI, YE YU, ZHANG XIAJIE
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2018
• Subjects: BEARINGS; BLASTING; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES ORAPPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUSPROVIDED FOR ELSEWHERE; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; STANDS OR SUPPORTS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

A large precise magnetic levitation direct-drive rotating workbench comprises a driving motor of a rotating workbench body, an angular displacement feedback system, a radial active type bias magneticlevitation bearing, an axial active type bias magnetic levitation bearing, an axial protecting bearing and a radial protecting bearing; the rotating workbench body and the active type bias magnetic levitation bearings restraining the axial movement and the radial movement of the rotating workbench body are arranged, and the protecting bearings, braking devices and a position feedback system are arranged; and a signal of the position feedback system is output to a control system to control the driving motor an the braking devices. The large precise magnetic levitation direct-drive rotating workbench is characterized in that the rotating workbench body achieves magnetic levitation supporting through the active type bias magnetic levitation bearings, and the rotating workbench body is directly driven through a perman