Page 62 FKN Systek
K5000 Multiple Blade Depanelizer
www.us-
tech.com www.FKNSystek.com Tools For Electronics Assembly High Volume PCB Depaneling
New Generation of Hexapods
Continued from page 53
tors. Different drive principles are being employed, depending on the application. For example, new hexapods uti-
See Video at
FKNSystek.com
Singulate Pre-Scored Panels
The K5000 multiple blade depanelizer can singulate up to 10 rows of panels in one
pass.The blade cartridges and feed system can be easily changed to set up for different panel configurations. FKN Systek makes standard and custom PCB singulation systems for pre-scored and tab routed boards as well as saws for panels with sensitive components.
Call 508-376-2500 for information - or go to
FKNSystek.com N100 Nibbler
Depaneling Saws
R100 Router
Singulate Tab-Routed Panels See us at APEX Booth 2237
lizing NEXLINE® piezoelectric drives from Physik Instrumente result in a positioning device that is completely non-magnetic. Such a system is criti- cal for medical equipment and device applications that require magnetic non-interference. Other uses include high-energy physics applications. In addition to classical hexapod struc- tures, parallel-kinematic designs are also beneficial to sub-nanometer pre- cise positioning mechanisms, re - quired for AFM (atomic force micro - scopy) applications and other novel super-resolution microscopy systems. With the integration of non-contact capacitive sensors, runout errors on a nanometer and sub-nanometer scale can be determined. The sensors con- tinually measure the actual position against the stationary external refer- ence, and a servo-controller can com- pensate the error in realtime (active trajectory control). Reso - lution and repeatability can attain 0.1 nanometer in such sys- tems.
Very High Stiffness Recent hexapod designs
provide extremely high stiffness and rigidity of their components and all moving parts, such as its bearings,
joints and drive
screws. This results in high nat- ural frequencies — 500Hz at a 22 lb. load — which prevents bend- ing in the six struts or in the movable platform, making these new hexapods capable of extreme accuracy, and the proper tool for pre- cision machining, metrology, micro - scopy and medical applications. One such system is the new
¸ RoHS
miniature 6-axes hexapod, Parallel Kinematics Hexapod Nano-Align - ment System, again from Physik Instrumente, which can deliver more than 10 lbs. of force and motion in all six degrees of freedom. Minimum incremental motion (real-world motion) is as small as 0.2µ with actu- ator resolution of 40nm and travel ranges to 40mm linear and 60° rota- tion, and a velocity of 10mm/s. This unit can be used for manufacturing and part placement, alignment of optical components and lasers, microscopy applications and neuro- science that requires high precision. A higher resolution version (33nm) with reduced load is also available. The system’s high level of accuracy is a combination of extremely precise parts, precision assembly and testing, and sophisticated algorithms built into its high-speed controller that take into account the exact tolerances of each strut and joint, providing pre- cise coordinates to each of the six actuators. Hexapods require the definition
of a fixed pivot point as the center of rotation. Advanced hexapod designs make use of a virtual programmable pivot point for rotational alignment tasks, allowing motion around any point, not unlike the human hand. Because of the complex motion
a hexapod can perform, it is desirable to have simulation tools to explore the possible motion range of the pay-
load mounted to the hexapod. The system includes a simulation tool with automatic collision detection/ avoidance. The shape and size of the payload can be added by the user inside or outside the hexapod enve- lope and the software calculates the distance to any obstacle in its way.
Open-Interface Architecture The latest PC-based digital con-
trollers, facilitated by open-interface architecture providing a variety of high-level commands, allow choosing any point in space as the pivot point for the rotation axes by software command. Target positions in 6- space are specified in Cartesian coor- dinates, and the controller trans- forms them into the required motion- vectors for the individual actuator drives. Any position and any orienta- tion can be entered directly and the specified target will be reached by a smooth vector motion. The pivot point then remains fixed relative to the platform.
April, 2011
Miniature hexapod. In addition to the coordinated
output of the six hexapod axes, these new hexapod controllers provide two additional axes that can be used to operate rotary stages, linear stages or linear actuators. Some include a macro language for programming and storing command sequences. These controllers have flexible interfaces, such as TCP/IP interface for remote, network and Internet connection. New simulation tools are being incor- porated for graphical configuration and simulation of hexapods to verify workspace requirements and loads. Such software provides full function- ality for creation, modeling, simula- tion, rendering and playback of hexa- pod configurations to predict and avoid interference with possible obstacles in the workspace. With the new design developments that hexa- pod systems are experiencing, manu- facturers and researchers who have a need for extremely high resolutions and high accuracy can now capitalize on them for improvements within their workplace. Hexapod technology has ad -
vanced considerably in a few short years, now it is now up to industry to embrace these new developments and put them to work to reduce their set-up and processing time, overall production cycle times, and ultimate- ly reduced cost of operation. Contact: PI (Physik
Instrumente) L.P., 16 Albert St., Auburn, MA 01501 % 508-832-3456 fax: 508-832-0506 E-mail:
info@pi-usa.us Web:
www.pi-usa.us r
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