Product category:
Component marking, printing and labelling systems (non-laser)
News Release from: Hoerbiger-Origa | Subject: Pneumatic cylinder scribing
Edited by the Manufacturingtalk Editorial
Team on 17 April 2007
Less is more on high speed scribing
machine
Hoerbiger-Origa has supplied rodless pneumatic cylinders to Robotix, which has developed an automated production line for scribing traceability serial numbers onto wheel rims.
Bob Jepp, founder and managing director of Robotix in Rugby has developed a high speed production line for scribing traceability serial numbers onto wheel rims for earthmoving equipment This uses a single Hoerbiger-Origa rodless pneumatic cylinder in the dual critical roles of positioning the scribing head and holding the rim steady in the workstation
This article was originally published on Manufacturingtalk on 19 Apr 2004 at 8.00am (UK)
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In use, wheel rims, which can vary in size from 24in dia and 15in wide to 40in by 40in, are delivered by a conveyor to the scribing workstation, where V-shaped guides position them accurately.
A large and powerful rodless cylinder mounted above the workstation descents, positions the scribing head just above the top surface of the rim to an accuracy of 0.01mm.
Mounted on the cylinder and protruding beneath it is a pair of Hoerbiger-Origa's linear shock absorbers; these contact the rim with sufficient force to hold the rim steady during scribing.
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"We've used a 50mm bore cylinder which has enough power to hold the rim firmly in place," explains Jepp.
"The shock absorbers are there to prevent the cylinder from damaging the rims, and vice versa.
They have to be stiff ones to transfer the holding force, and this means they will be reliable in the field too.
"The cylinder has, at 1000m, a relatively long stroke.
This is to allow ease of access to the workstation by operators and maintenance engineers.
It is fitted with one of Hoerbiger-Origa's Starline Guides to ensure smooth and accurate motion in this arduous application" The actions of the cylinder and other parts of the machine are controlled by a Mitsubishi PLC, the LCD display of which provides the operator with process and production messages.
The scribing head is a proprietary system from Technifor in Germany that uses a micro-percussion scribing drive and x-y configured servos for letter/numeral forming.
The scribing is fairly deep so that it can be easily read even in muddy working conditions, which means there are high forces being transmitted through the rims during scribing and hence Jepp's decision to use one of Hoerbiger-Origa's larger bore cylinders.
In fact all the pneumatic components, including valves, solenoids, air preparation equipment and secondary cylinders are sourced from Hoerbiger-Origa.
Jepp explains the reason for this: "Keeping the supplier count low is good for my build and management efficiency and also makes field servicing and maintenance easier. Request a free brochure from Hoerbiger-Origa ...
For operating reliability its makes sense to use the best equipment available, and when it comes to rodless pneumatic cylinders that means Hoerbiger-Origa.".
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