feed screw


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feed screw

[′fēd ‚skrü]
(mechanical engineering)
The externally threaded drill-rod drive rod in a screw- or gear-feed swivel head on a diamond drill; also used on percussion drills, lathes, and other machinery.
References in periodicals archive ?
What Morrison came up with is three sets of paired feed screws that can be quickly changed according to which bottle we're running, and the change requires no tools." Also part of the Morrison system is an outfeed screw that is the same for all three bottle types.
The mobile cross beam 1 together with milling heads 5 have a large weight (possibly exceeding 15 t) which, in the absence of a balancing system, is displaced on the guides of props 7 by the motor 2 acting through reducing gears 3 and feed screws 4.
Also on display was TS5000DMP which dispenses material with a rotary displacement action using a rotary feed screw principle.
* Offering of dovetail, linear ball and crossed roller styles with rack & pinion, feed screw or micrometer head feed mechanisms for optimum combination of precision, durability and value for the application required.
A different torque limiter, called a Torque Tender, was installed on the feed screw that sends bottles into the system for filling.
Using an open throat feeding system with a patented feed screw design, executives said products positively feed into the rotor/stator element of the pump.
During the dispense process, therefore, the Fillers compact under pressure and fill up the gaps in the rotary feed screw. As a result, a rigid, almost solid, build-up can quickly amass inside the valve, through which no material can pass.
The BTM is equipped with an auger feed screw in front of the rotor and the stator.
The new 900E Mixer/Grinder from Hollymatic Corporation, based in Countryside, Ill., features an easy loading/unloading profile, a stainless steel mixing ribbon and a feed screw that operates at right angles to its conical hopper.
According to Netzsch, this increases capacity to 50% more than the standard feed screw design.
Experiments were carded out in a 63.5 mm single screw extruder, examining the effect of degree of starvation on a conventional and barrier feed screw. Interest was focused on the mixing/melting mechanism of starved-fed solids-conveying as it affects the size and number of filler agglomerates observed in the extrudate.
Simultaneous feed of two axes is possible by using a floating plate, thus eliminating runout of the feed screw. An absolute positioning encoder feedback system allows the wheel to be parked in any position, thus saving the time of returning to a home position.