Kistler Instruments Ltd. - PRODUCT NEWS
NEW SET-UP SYSTEM FOR KISTLER NC JOINING MODULES.
The range of electromechanical joining modules introduced by Kistler Instruments (www.kistler.com) last year has proved to be very popular wherever reliable and flexible press fit joining processes are used. To simplify the setting-up and operation of the integral force-displacement monitoring capability, Kistler has launched the NC Compact System; a closed system with integrated controller and firmware that cuts capital expenditure and installation costs, reduces susceptibility to faults and facilitates integration into existing on-site control environments.
Set-up is by a TFT touch screen operating panel that can be used for configuring the parameters of a standard joining process, visualizing the process and backing up data. As the operating panel is not needed for ongoing operation, a single panel can be used to configure the parameters of several joining modules.
The NC Compact firmware, preinstalled in the servo controller, includes up to 16 force-displacement monitoring and integral sequence control programs. Each program contains up to three windows; two of which are for the joining process and one for the end point. The program monitors the joining forces in the press direction live at a sampling rate of up to 1 kHz. In addition to an "OK" or "not OK" result, the servo controller Profibus interface can transfer event values from window evaluation to the system PLC. The joining process may be terminated by a configurable force threshold (YTE), force control, force-triggered positioning and positioning with or without deformation compensation.
In addition to force-displacement monitoring, the NC Compact firmware includes integral sequence control with three modes; Automatic, Stepping and Inching. Each program has available a configurable home position, a return stroke, a joining stroke and an intermediate position, which can be traversed or accessed at different speeds to suit the application. The user receives, via the Profibus interface, a simple command or status word for control purposes.
In addition, almost all joining parameters can be changed or read by the system PLC via the fieldbus interface. A programmable high-speed switch off system is used to monitor the return stroke. Each program has available OK/Not OK statistics for joining process diagnostics.
Depending on the program, two predefined measuring ranges can be used for NC joining modules NCFH (Type 2151B ) and NCFT (Type 2157A ) with integral piezoelectric force sensor.
Kistler Instruments Limited
Established in Wintherthur (Switzerland) in 1957, Kistler is represented in over 50 countries and has subsidiaries in Germany, France, Italy, UK, Japan, USA, China, Korea and Singapore. With a staff of more than 800, the Kistler Group is one of the world's leading providers of dynamic measuring instrumentation. The Kistler Group achieved turnover of 160 million Swiss Francs in the 2005 financial year.
Kistler's core competence is the development, production and use of sensors for measuring pressure, force and acceleration. Kistler's know-how and electronic systems can be used to prepare measuring signals for use in analyzing physical processes, controlling and optimizing industrial processes, improving product quality in manufacturing and improving performance in sports and rehabilitation.
Kistler offers a comprehensive range of sensors and systems for engine development, automotive engineering, plastics and metal processing, installation technology and biomechanics.
Heavy investment in research and development, 15% of staff worldwide are engaged in research and development, has generated a number of innovations using piezoelectric, piezoresistive and capacitive techniques to provide solutions to numerous force, pressure and acceleration measuring problems. These innovations include the world's first commercial quartz sensor, two-wire constant current technology to integrate sensors with microelectronic circuitry, high-temperature pressure sensors for use up to 400 Deg C and three-component force measuring sensors.
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