Machine element or mechanism – Gearing – Directly cooperating gears
Patent
1988-07-25
1990-04-17
Herrmann, Allan D.
Machine element or mechanism
Gearing
Directly cooperating gears
74 8915, 744248R, F16H 2522
Patent
active
049169637
ABSTRACT:
There is provided a moving table unit having a table which is attached to rectilinear guide devices on both sides of the legs of a substantially U-shaped bed, a first motor unit with a ball screw which is attached to the upper side of the bottom of the bed near an end of the bed in the sliding direction of the bed; a second motor unit with a ball screw which is attached to the lower side of the table near one end of the table; and a ball spline unit attached to the lower side of the table between the motor units and near the other end of the table, wherein these units have the same axial center and are coaxially coupled by a drive shaft on which ball screw grooves and a ball spline groove are formed at the positions corresponding to those units. The outer diameter of the portion of the ball spline shaft on which the ball spline groove is formed is larger than those of the drive shaft on which the ball screw grooves are formed. With this table unit, no backlash occurs, the high positioning accuracy is derived, the rigidity of the drive apparatus of the table unit is increased. The table unit can be miniaturized and cheaply manufactured.
REFERENCES:
patent: 2630022 (1953-03-01), Terdina
patent: 2860266 (1958-11-01), Schrader
patent: 4614128 (1986-09-01), Fickler
patent: 4693131 (1987-09-01), Teramachi
Herrmann Allan D.
Nippon Thompson Co. Ltd.
LandOfFree
Moving table unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Moving table unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moving table unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1044604