Linear Positioning Drives offer adjustable pitch/side thrust.
March 23, 2009 -
Model RS linear drives feature adjustable axial thrust as well as pitch settings of 0.1, 0.2, 0.3, 0.4, or 0.5 times shaft diameter. Side thrust and linear pitch will not vary when other is adjusted, simplifying process of finding settings that will enhance smooth linear movement and overall optimum drive function. Units achieve linear speeds of up to 5 fps, over distances of up to 13 ft, with axial thrust up to 500 lb. They are available in 7 shaft diameters from 10-60 mm.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Amacoil Inc.
2100 Bridgewater Rd., P.O. Box 2228
Aston, PA, 19014
USA
Adjustable Pitch and Side Thrust Enhance Smooth Movement in Linear Positioning Drive
Aston, PA, March 2009 - Amacoil/Uhing model RS linear drives are now available with five linear pitch settings and adjustable axial thrust. This permits varying pitch/thrust combinations until optimum settings are achieved. Optimizing pitch and thrust settings results in very smooth linear movement making the drives ideal for metrology applications and other linear motion processes requiring backlash-free, smooth movement.
Turning a thrust set screw increases or decreases pressure on the rolling ring bearings which raises or lowers side thrust. The thrust will remain constant even if linear pitch is changed. Likewise, the linear pitch will not vary if thrust is adjusted. For designers and operators this flexibility facilitates the process of finding the settings that will best enhance smooth linear movement and overall optimum drive function for a given application.
Pitch, or the distance moved per shaft revolution, may be specified at 0.1, 0.2, 0.3, 0.4 or 0.5 times the shaft diameter. Changes to pitch require no re-gearing or adjustment to motor speed. Nor do any other components of the linear motion system need to be changed. The specific pitch setting is achieved by placing wedges between the bearings to hold them at a specific angle relative to the shaft. This angle determines the linear pitch which will remain constant regardless of motor speed.
It is recommended that both thrust and pitch be factory set based on application requirements. However if the modifications must be done where the drive is being used, Amacoil technical representatives can provide telephone instruction for the procedures.
Amacoil/Uhing RS linear drives are available in seven sizes for shaft diameters measuring 10 mm to 60 mm. The larger the drive shaft diameter the more thrust the drive has. The drive shaft is threadless and cannot trap debris which facilitates jam-free operation. RS drives have zero backlash and are used for automated manufacturing processes across a wide range of industries including textile, automotive, metrology and CNC machining. Depending on size, the drives achieve linear speeds of up to 5 feet per second over distances of up to 13 feet with axial thrust up to 500 lbs. Repeatable accuracy is dependent on the type of controls used. Except for occasional light lubrication of the shaft, no other maintenance is required.
Amacoil supplies Uhing linear drives separately or in custom fabricated assemblies including shaft and end supports. As the exclusive North American distributor for Uhing, Amacoil provides sales, technical support, service/repairs and parts. For more information please contact Amacoil, 2100 Bridgewater Road, Aston, PA 19014. Tel: 610-485-8300. Toll free: 800-252-2645. Fax: 610-485-2357. email: amacoil@amacoil.com
Web: www.amacoil.com
Email reader inquiries to: beisele@amacoil.com
If using ground mail, please send to Bob Eisele, Amacoil, PO Box 2228, Aston, PA 19014.
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