This category covers:
Equipment that aids the control of industrial processes subject to continuous changes in position. Includes drives, motors, gears, chains and belts, bearings, actuators, brakes and clutches.
Linear bearing specialist igus has introduced the drylin W hybrid linear system, which is claimed to combine the advantages of tribopolymer plain and roller bearings to deliver a self-lubricating, maintenance-free system featuring low driving forces with almost silent operation. Typical sliding applications include those found on machine guard doors, camera systems, control panels, theatre lifts, stages and lighting rigs.
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RUD offers a selection of shoe chains made from textile or stainless steel with profiled chain links for good grip.
Stepping piezoelectric actuators based on the stick-slip effect inherently make use of a friction contact between stator and rotor. This contact defines the actuator’s performance but is prone to wear and tear. For broad use, the actuator has to be able to perform around one million strokes. To assess the actuator’s performance in terms of force, speed, mechanical output, electrical input and long-term stability under different load and environmental conditions, as well as different ...
According to Cedrat Technologies, future aeronautics are more likely to use electric actuators than hydraulic actuators. Existing amplified piezo actuators (APAs) with steel shells are good candidates. Lighter carbon shells are being developed to further increase their efficiency. For helicopter rotor blade applications this evolution is almost unavoidable, but it is also very interesting for other domains.
This paper from Cedrat Technologies presents the development of the largest piezo actuator ever designed based on low-voltage PZT. This actuator is able to provide more than 20kN of force in dynamic operation (60kN in static operation). The purpose of low-frequency vibration generation is to improve the quality of parts production in the field of manufacturing and machining process.
Amplified piezoelectric actuators offer the advantage of large deformation (up to eight per cent) and large strokes. Because of a prestress applied to the piezo ceramics and an efficient mechanical amplifier, they can produce large strokes both in static and dynamic conditions including resonance. For these reasons, these actuators can be used for micro-positioning, structure shaping, structure active damping and more.
Optical instruments such as interferometers and optical delay lines are sensitive to external vibrations and require a strong isolation of vibrations. These requirements have driven the development of a new type of electrically tunable low-frequency miniature suspension. The result is a miniature semi-active single-axis suspension called ETS offering a very low cut-off frequency.
In this paper the question will be discussed where and when the expense of a CoSimulation with two established simulation tools such as 1) Matlab/Simulink and 2) FLUX is worthwhile. A linear actuator is used as an example, which is simplified and abstracted from a real part due to confidentiality reasons.
Experience shows that up to one third of bearing failures can be attributed to improper handling and faulty mounting. Moreover, these problems get worse as bearing tolerances become more exacting, says Gary Hughes, product engineering manager at The Barden Corporation.
Pin pullers are used to hold, lock or secure deployable or moving parts on spacecrafts during their launching. These ‘one shot’ actuators used to be based on explosive charges.