Product category:
Ballscrews, Linear Guides, Jacks, Dampers
News Release from: Abssac | Subject: Bidirectional ballscrews
Edited by the Engineeringtalk Editorial
Team on 06 September 2005
Ballscrews go both ways
Having provided an initial custom solution for a confectionery machine application, Abssac can now supply a range of bidirectional ballscrews.
Placing two ball nuts on the same ball screw is often required to achieve a preloaded nut set up by exerting an axial force between the nut housings When Abssac was confronted with a confectionery machine application, two nuts were still required on a single screw, but in this instance both nuts would require opposite axial movement for a single screw rotation direction
This article was originally published on Engineeringtalk on 22 Feb 2000 at 8.00am (UK)
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Rising to the challenge, Abssac delivered a ground 8mm diameter by 1mm lead ball screw in both a right hand and left hand format on the single screw.
In effect both screw thread forms met at the centre of the screw, separated by a small blank section.
This enabled two nuts to then be mounted on the screw which would then move in opposition to each other for a given screw rotation direction.
Therefore a pinching or extension movement could be achieved with the opposing nuts with up to 5um repeatability accuracy.
From this application a further 4, 5 and 6mm diameter screw series has been developed using 1 to 5mm lead options.
Matching the bidirectional requirement with high end repeatable accuracy was another design solution supplied by Abssac. Request a free brochure from Abssac ...
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