Machine element or mechanism – Control lever and linkage systems – Multiple controlling elements for single controlled element
Patent
1997-10-15
1999-08-24
Jeffery, John A.
Machine element or mechanism
Control lever and linkage systems
Multiple controlling elements for single controlled element
901 29, 409211, 403 53, B25J 1702, F16B 710
Patent
active
059411287
ABSTRACT:
A machine tool includes a base, a traveling plate to which a tool is to be attached, plural rods, and plural drive mechanisms fixed to the base. Each of the drive mechanisms is provided with a slide table movable on the drive mechanism and with an actuator for moving the slide table. One end of each of the rods is swingably connected to the corresponding slide tables through a first joint and the other end of each of the rods is swingably connected to the traveling plate through a second joint. Each of the first and the second joints include two rolling elements, each of which is rotatably supported by a rolling bearing to swing the rod.
As the rolling elements are supported by the rolling bearings without a clearance, the positioning accuracy of the machine tool is enhanced.
REFERENCES:
patent: 4819496 (1989-04-01), Shelef
patent: 4988244 (1991-01-01), Sheldon et al.
patent: 5053687 (1991-10-01), Merlet
patent: 5259710 (1993-11-01), Charles
patent: 5575597 (1996-11-01), Bailey et al.
patent: 5601377 (1997-02-01), Ohya
patent: 5715729 (1998-02-01), Toyama et al.
Taizo Toyama, et al., Toyoda Koki Technical Review, vol. 37, No. 2, (serial No. 134), pp. 50-55, "Parallel Link Cutting Machine", Oct. 1996.
M. Uchiyama, et al., Proceedings of the 9.sup.th Annual Conference of the Robotics Society of Japan, No. 1, pp. 65-66, "Singularity Analysis of a Parallel Robot Hexa", 1991.
Suzuki Motoshi
Toyama Taizo
Jeffery John A.
Stallman Brandon C.
Toyoda Kokoi Kabushiki Kaisha
LandOfFree
Machine tool having parallel structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Machine tool having parallel structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Machine tool having parallel structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-456988