lead screw

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lead screw

[′lēd ‚skrü]
(mechanical engineering)
A threaded shaft used to convert rotation to longitudinal motion; in a lathe it moves the tool carriage when cutting threads; in a disk recorder it guides the cutter at a desired rate across the surface of an ungrooved disk.
References in periodicals archive ?
Alongside this, it is helping us broaden the scope of our metrology analysis for the leadscrew range.
Assembly was tedious: A mechanism that transferred torque from an Acme nut to the elevation leadscrew pulley required a machined key and keyway, which added to production costs.
In the September issue of Designfax was a miniature motor and leadscrew that dispensed insulin from a portable device, thereby allowing diabetics to lead active lives.
It's relatively simple to increase leadscrew pitch, stepper-motor increments, and encoder scales, but without a stable platform to operate from, these improvements are meaningless.
The leadscrew nut formed in the shaft that has an M4 hole threaded through the center results in excellent accuracy.
The Microstage utilizes a preloaded linear rail, a precision anti-backlash rolled leadscrew, a high performance coupling and motor mounting provisions.
What really sets it apart from rotary-motor leadscrew systems, however, is its self-locking design.
A ballscrew is used in place of the Acme-thread leadscrew because it is more accurate, has better wear characteristics, has lower inertia and friction, and will perform more smoothly under far higher cutting loads and accelerations than its Acme counterpart.
Thermoplastics in the rotor rivet nut and stainless steel acme leadscrew allow for efficiency in the motor.
The decision didn't come easy for Landis, which has built its success on proven hydrostatic leadscrew technology.
The TLS-6000 Series now has seven models, all featuring automatic alignment, bar code support, a positive-pressure filtered air system, ultra-reliable leadscrew mechanisms, and many other features that have made Qualstar libraries the choice of IT professionals, worldwide.
The Haydon Kerk Motion Solutions (Kerk) SerewRails were replaced with reeirculating ball bearings on two 1" circular stainless steel shafts and a single Kerk leadscrew.