Amacoil-Uhing Model RS drive nuts provide smooth backlash-free linear motion in machine design. Unlike a screw, the RS drive nut runs on a smooth shaft. This eliminates the potential for debris to become trapped in threads which could then clog or jam. If material does fall onto the shaft, it is easily removed by wiping the shaft with a clean cloth. Should an object somehow become caught between the nut and the shaft bearing end support, the drive simply slips until the operator can remove the obstruction. Slipping, as opposed to the churning and grinding associated with screw-based systems, prevents damage to the nut and other components in the linear motion system which, in turn, reduces downtime for repairs and enables more consistent production rates.
Designers of automated machinery requiring a linear motion component will find RS drive nuts meet requirements for a variety of indexing and reciprocating linear motion applications. When integrated with sensing devices such as a linear scale, RS drive nuts provide high-accuracy, backlash-free linear motion in material handling machines, winding equipment, test and measurement devices, metrology machinery, packaging machines and other converting and finishing equipment.
Options include a stainless steel housing and shaft scrapers which wipe off the shaft while the nut moves. This enhances smooth, clean operation. Customers may also specify special sealing procedures for the RS nut housing as is sometimes desirable in food processing machinery to meet regulatory standards. RS nuts require no maintenance except periodic lubrication of the shaft with grease.
RS linear drive nuts offer axial thrust from 22 to 449 pounds. The drive operates on the rolling ring engineering principle which produces linear motion from a smooth, rotating shaft while assuring no play or backlash during movement of the drive nut. Available in ten sizes to meet varying payload and thrust requirements, the RS drive nut is suitable for vertical or horizontal travel. Each of the ten sizes is available in five different linear pitch settings. Shaft rotational speeds may be up to 10,000 rpm depending on the size of the drive. Linear travel speed ranges from 0.5 ft./sec. up to 4.0 ft./sec. depending on the size of the drive and also on the weight of the payload and the manner in which it is attached.
Related Glossary Terms
- backlash
backlash
Reaction in dynamic motion systems where potential energy that was created while the object was in motion is released when the object stops. Release of this potential energy or inertia causes the device to quickly snap backward relative to the last direction of motion. Backlash can cause a system’s final resting position to be different from what was intended and from where the control system intended to stop the device.
- grinding
grinding
Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.
- metrology
metrology
Science of measurement; the principles on which precision machining, quality control and inspection are based. See precision machining, measurement.
- payload ( workload)
payload ( workload)
Maximum load that the robot can handle safely.
- pitch
pitch
1. On a saw blade, the number of teeth per inch. 2. In threading, the number of threads per inch.
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