TPT November 2010

C utting , S awing & P rofiling

Conair increases accuracy on new line of cutters A POSITION-based servo drive system, which is now standard equipment on the newest Conair flyknife cutters, increases cut-length accuracy by as much as 1,000%. At the same time, the CSC Series cutters carry a price tag that is almost 20% lower than similar cutters, the company said. Designed for applications involving extruded profiles and tubing, the CSC Series cutters are available in 2-, 3-, 4- and 5-inch-diameter cutting capacities. Units can make up to 350 cuts per minute in on-demand cutting mode, or up to 4,500 cuts per minute in flywheel mode. The new cutter line underwent a full year of testing to ensure performance and reliability before being released to the marketplace. The standard positional servo drive system provides cut response repeatability within ±0.1 millisecond – a ten-fold improvement over conventional velocity- based servo systems, which are capable only of repeatability within ±1.0 millisecond. Cut response repeatability relates directly Large diameter fittings saw ADESCOR Inc, Canada, has developed a plastic fittings saw for diameters from 450 to 1,800mm and upwards. The machine features a vertical reciprocating motion with a 200mm wide blade and a guide that

to product cut-to-length accuracy, with fast response becoming especially important as extrusion rates increase. An eye-level control panel, with soft numeric and fixed-function keys, is the operator interface to the CSC Series control system, which, along with the servo drive, is the secret to the cutter’s accuracy. The system features a multi-tasking motion coordinator instead of a more conventional preset counter. Built right into the servo system, the motion coordinator measures length directly rather than depending on readings coming from a separate counter. The primary benefit of this control system is the virtual elimination of “latency time” — the amount of time required for the program loop to monitor incoming length information, check it against the programmed length, and signal the cut. The control system delivers other benefits, including: Real-time repeatability tester: built- in to confirm cutter accuracy. The tester automatically measures repeatability of the blade park position in milliseconds, to three decimal points, and even differentiates between variations arising from the input devices like encoders, electric eyes and timers and feed devices such as belt pullers. Multiple cut-length actuation modes: including counter/encoder, timer, flywheel or end sensing. Auto-demand cutting mode: gives users the ability to vary the blade speed and follows the contour of the pipe providing extra stability. The saw blade head arrangement is mounted onto a right and left pivoting head that moves into a clamped pipe. Adescor has also unveiled a new semi- automatic slab cutter that provides a cost effective means of cutting large diameter misformed pipe into strips for feeding into a grinder. This new machine takes a 2m length of corrugated pipe and cuts the pipe longitudinally into 300mm wide strips.

increase the cuts per minute. Besides the accuracy of the control system and the position-based servo drive, other features of the CSC Series servo drive set it apart from other units. These include: In-line planetary gear reducer: unlike more commonly used belt-and-pulley reducers, planetary gear reducers are designed to be directly mounted to servomotors. They tolerate axial and radial loading better and protect the servomotor. 4:1 reduction ratio: compared to belt- and-pulley systems, which typically achieve a 2.5:1 reduction ratio, the CSC cutters can provide more cutting torque while extending motor life. For high-speed, light-duty applications, which don’t require as much torque, the Model CSC-L can be supplied without the planetary reducer. Available 2.7- and 3.8-hp drives: deliver torque ranging from 620 to 906 inch- pounds. Intercept algorithm: optimises repeatability by compensating for firmware scan time variations and readjusting velocity and position, taking actual scan time variation into consideration. Aluminium and stainless-steel cutting heads are available for (respectively) high- speed cutting and applications requiring high-torque. Conair – USA Website: www.conairgroup.com The operator rolls the 2m section of pipe into the slab cutter, which activates the safety light barrier and the slab cutter cuts a section of pipe, ejects the cut slab, rotates the pipe for the next cut to be made, and continues the process until the pipe is cut up.

Adescor Inc – Canada Fax: +1 519 520 8614 Email: sales@adescor.com Website: www.adescor.com

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Production Excellence, Logistic Support and Project Partnership are perfect examples of the ERNE qualities and skills documented by certifications and translated into international projects and references from satisfied customers the world over.

erne fittings gmbh, 6824 Schlins, Hauptstrasse 48, Austria/Europe, office@ernefittings.com, ernefittings.com

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N ovember 2010

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