Lead screws available either way round
An
Abssac product story
Edited by the Engineeringtalk editorial team
May 10, 2006
Lead screws supplied in both a right handed and left handed thread format can readily be supplied by Abssac.
Lead screws supplied in both a right handed and left handed thread format can readily be supplied by Abssac.
A redesigned food packaging machine was originally using the opposing screws to operate a high speed gripper in a machine that hot plastic foil sealed, ready to cook meals for a leading supermarket.
As the machine operated within a food grade environment meant there could be no lubrication with the system, which contributed to the premature failure of the nuts after only 50,000 cycles.
It was also a concern that the existing lead accuracy matching between leadscrews could also be a factor in the excessive wear of the nuts.
By using a PTFE impregnated plastic as the antibacklash nut base material and ensuring matched pitch accuracy of the screws in both the right handed and the left handed screws enabled initial tests cycles up to 56,000 cycles to be completed without any sign of wear to the nuts.
Chris Cattle of Abssac says: "By being able to match the screws pitch accuracy reduces the stresses within the system considerably, ensuring a more reliable linear movement".
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Other Abssac stories
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Abssac expands lead screw range
Abssac has expanded its lead screw range to supply any type of thread form. -
Lead screws in a choice of colours
Abssac's precision lead screws have recently helped with a retrofitting requirement in the printing industry by supplying them in a choice of colours. -
Lead screws reach linear range of 200mm
Increasing the helix angle on lead screws allows leads to be achieved up to 200mm, that is the captivated nut will travel 200mm in a linear direction for one complete rotation of the screw. -
Aluminium leadscrews save system weight
Lead screws machined from aerospace grade HE30 aluminium are now available to cope with the demand for lightweight linear mechanisms. -
Customised nuts and attachments for lead screws
Abssac has long supplied cold rolled formed stainless steel lead screws and anti-backlash nut designs, and now offers the facility to have non-standard attachment designs incorporated
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