High-precision direct driven air flotation turntable
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An air-floating turntable, direct-drive technology, applied in the direction of the machine/support, bearing, shaft and bearing, etc., can solve the problems of small end surface runout and radial runout, achieve small indexing error and friction torque, and excellent dynamics and static stability, the effect of simplifying the mechanical structure
Active Publication Date: 2011-04-13
BEIJING SATELLITE MFG FACTORY
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[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a precision air-floating indexing turntable, which has high indexing accuracy, small end surface runout and radial runout, and solves the problem of precise indexing under heavy loads. Grading problem
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[0017] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0018] The shape of the precision indexing turntable of the present invention is as follows: figure 1 Shown:
[0019] A) During transportation, the pressing block 12 needs to be fixed on the motor mounting base 13 by screws to compress the air bearing surface assembly 10 and other parts connected to it, and the pressing block 12 for transportation and the corresponding locking screws need to be removed during use;
[0020] B) The object to be rotated and driven is fixed on the upper surface of the air bearing surface assembly 10, installed with the installation base 7 as the centering reference, and the air bearing surface assembly 10 as the end face positioning reference, and connected and fixed by screws. For the distribution of the fixing holes, see figure 2 , ΦD1, ΦD2 and ΦD3 are the pitch circle diameters of each mounting hole;
[0021] ...
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Abstract
The invention discloses a high-precision direct driven air flotation turntable, which comprises a supporting seat (1), a hoisting ring screw (2), a handle (3), a sealing ring (4), an axial throttle (5), a radial throttle (6), a mounting pedestal (7), a radial bearing outer ring (8), an O-shaped rubber sealing ring I (9), an air flotation face assembly (10), an O-shaped rubber sealing ring II (11), a pressure block (12), a motor mounting seat (13), a socket (14), a plug I (15), a plug II (16), a torque motor stator (17), a torque motor rotator (18), a small pressure ring (19), a grating disc (20), a reading head (21), a reading head bracket (22), a gland (23), a sealing plate (24) and a large pressure ring (25). The turntable has high indexing precision and low end face run-out and radial run-out, and solves the precise indexing problem under the condition of high load.
Description
technical field [0001] The invention relates to a high-precision direct-drive air-floating turntable, which can be applied to coordinate transfer, component positioning, precision measurement, etc. in the assembly and part assembly of large-scale precision systems such as satellites, and can also be applied to industries such as aerospace and automobile manufacturing. The precision machining and precision measurement can form a series of products by changing the structural size, gas path parameters, selecting appropriate driving motors, etc., which can be applied to a wider range of fields. The technology applied in this invention covers the fields of light, mechanics, electricity, etc. . Background technique [0002] The precise measurement of satellite assembly is divided into structural system precision measurement, propulsion and control system precision measurement, including installation accuracy measurement of momentum wheel, gyroscope, star sensor, engine, etc.; payl...
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