In addition to 248nm operation, Novatex from Lambda Physik (Fort Lauderdale, FL) is also optimized for ArF (193nm) operation. This excimer laser delivers stabilized output energy of 6 mJ at 193 nm. The average output power of up to 6 W at 1 kHz and outstanding long-term stability make this laser ideal for low-pulse energy and high repetition rate micromachining. Reportedly, the laser complies with SEMI S2 standards and feature excellent gas, optical components and tube lifetimes that have been proven by performance. Optics lifetimes of up to one billion laser pulses are achieved by employing a beam shield that can be purged.
The Gator Series diode-pumped solid-state (DPSS) lasers from Lambda Physik (Fort Lauderdale, FL) now incorporate a number of engineering enhancements. The ability to vary the repetition rate from 5 kHz to 15 kHz allows the user to match the laser's repetition rate to varying feed rates during the process. The external trigger capabilities enable the user to sync the laser pulses to the process and control the repetition rate directly through an external trigger signal. The variable output power helps the user to adjust the laser's output power to changing process conditions. The parallel interface simplifies the integration in CNC systems by providing fast hardware control signals for the laser. And the option to switch wavelengths enables the user to toggle between the fundamental wavelength and the higher harmonics wavelengths.
Ti:sapphire regenerative amplifier
Designed for time-resolved femtosecond spectroscopy, high-field physics and nonlinear optics, the Legend Sub-30 fs Ti:sapphire regenerative amplifier from Positive Light (Los Gatos, CA) produces stable, high-contrast, sub-30 fs pulses. The standard model delivers energy-per-pulse greater than 1 mJ at 1 kHz at 800 nm. The high-energy model delivers greater than 2.5 mJ at 1 kHz. The Legend is pumped with the company's Evolution laser, a diode-pumped, intra-cavity doubled, Q-switched Nd:YLF laser.
The SPii PCI from ASC-Tech80 (Maple Grove, MN) can support eight axes of combined servo and stepper control and provide a constant 10 kHz update for both the profile generator and controller regardless of the number of axes supported. The controller communicates with the host via a 32-bit PCI interface. The SPii PCI can be combined with its high-performance sister card, the SpiiPlus.
With more than 1100 pages, 10,000 new products and lower everyday prices on thousands of popular items, the Enco 2003 Master Catalog, from Enco Manufacturing Company (Fernley, NV), offers a large selection of machinery, metalworking and woodworking tools. The company features 99 percent in-stock inventory of all items ordered, guaranteed lowest prices, three state-of-the-art regional distribution centers providing nationwide service and the Enco Quick-Ship program that ensures orders placed by 4 p.m. ship the next day.
Industrial optics catalog
Edmund Industrial Optics (Barrington, NJ) has released its January 2003 catalog. This 340-page edition contains more than 10,000 products. New to this catalog are more than 500 products, including crystalline lenses and windows, UV fused silica optics, high-precision linear polarizers, laser mirrors, linear actuators and more.
Unitek Miyachi's (Monrovia, CA) Micron Series laser welding system offers medical device manufacturers precision, control, speed, reliability and flexibility for meeting FDA quality-control and process certification standards. The CNC motion systems provide sub-micron XY positional resolution of 100nm and bi-directional repeatability of 500nm. The A Series pulsed Nd:YAG laser produce focused spot sizes of 25 microns and incorporate pulse shaping of up to 20 programmable segments to accommodate complex weld schedules. System options include vision-directed motion and automatic laser power confirmation.
Linear motion bearings and slides
Customers in the U.S. and Canada can order all sizes of cross-roller linear bearings, recirculating units, slides, miniature guideways and a variety of accessories from Schneeberger Inc.'s (Bedford, MA) Online Shop. Access is available to the shop via the company website www.schneeberger.com.
The A700 from Meta Vision Systems (St-Laurent, Quebec) scans a high-intensity laser spot across a joint to enable seam tracking on shiny surfaces. According to the manufacturer, the sensor looks slightly ahead of the weld torch while an on-board linear camera, scanned in sync, captures a 3D cross section of the joint that the system software uses to determine its exact position before and during welding. The sensor can be used with the company's Laser Pilot MTR for robot applications and with the VistaWeld system on automated welding machines. The system can be optimized and programmed for a variety of joint profiles, depths and sizes.
Molten metal level measurement
A brochure from LMI Selcom (Southfield, MI) describes molten metal level measurement and control equipment and high-performance sensors and actuators for use in the aluminum non-ferrous industry. Also provided is a detailed cut-a-way of the company's various components and how they can be integrated into an online system using specialized engineering and know how.
Laser electronics catalog
Analog Modules' (Longwood, FL) Laser Electronics catalog now includes new products such as the Model 575 capacitor charging power supply and the Model 866 simmer supply. The 12-page catalog also features Pockels' cell drivers, CW arc lamp drivers, pulsed flashlamp drivers and high-power laser diode drivers. The company designs a range of analog electronic products.
New from Alpine Research Optics (Boulder, CO) is a series of 193nm optics for use in applications that include microlithography, micromachining, and Lasik. These CaF2 components include mirrors, partial reflectors and windows for both 0o and 45o operation as well as a range of spherical and cylindrical lenses. The spherical lenses and windows are available in diameters ranging up to 75 mm, and the spherical lenses are ofered with radius of curvature between 0.05 and 10 meters. Cylindrical lenses are available with radius of curvature between 0.05 and 10 meters and can be produced in lengths of up to 75 mm.
Fiberoptic laser encoder
The Renishaw (Hoffman Estates, IL) RLE fiberoptic laser encoder is an interferometer-based system designed to produce high-resolution linear position feedback signals, while maintaining an ease of installation comparable with traditional tape and glass-based encoders. With axis length of up to one meter, when using plane mirrors, it is ideal for X-Y stages, wafer inspection machines, machine tools, CMMs, precision gauges, glass grinding machines an other precision motion systems.
The Ultra Precision Gantry from Anorad Corp. (Shirley, NY) incorporates air bearing technology to permit virtually frictionless motion and dynamic performance. According to the company, the systems feature a massive granite base and rigid steel risers to create an extremely stable platform. A magnetically preloaded XY air bearing system, with more than one meter of travel in each axis, is affixed to the structure and provides the high accuracy multi-axis motion.
Directed Light (San Jose, CA) offers Precitec capacitive height-sensing retrofit packages for Mitsubishi, Mazak, Balliu and other industrial cutting lasers with tactile sensing heads. Reportedly, the retrofit system eliminates scratching on the work surface, provides the ability to work with thinner materials, pierce the workpiece more quickly and cut a wider variety of shapes.
The PL-100 alignment laser from Pinpoint Laser Systems (Newburyport, MA) produces a bright-red beam that is useful for positioning equipment, aligning production parts, guiding forklift operators, positioning conveyors and many general factory set-up and positioning projects. The product is one inch in diameter and five inches long with a six-foot cable to a wall-mounted power supply. Options for a bright laser line and other laser patterns are available.
Ball screws with rotating nuts
Rotating nuts have been added to Steinmeyer Inc.'s (Bedford, MA) standard line of precision ball screws. According to the company, rotating the nut, as opposed to rotating the screw, has the following advantages: higher critical speed, higher rigidity, easier to cool the screw and easier to pretension the screw.
Pulsed Nd:YAG lasers
The LW300A and LW400A pulsed Nd:YAG lasers from Unitek Miyachi (Monrovia, CA) are intended for high-speed seam and spot welding applications that require deep penetration, hermeticity and high repetition rates. With average output power ranging from 300 to 400 W, the lasers reportedly provide exceptional pulse energy and feature real-time power feedback, 20-segment pulse shaping and power ramp-up and ramp-down, which together provide weld process control, repeatability and uptime. The lasers feature up to four built-in fiber outputs that can be configurd in Time Share and/or Energy Share modes.
The IVP Ranger M50 camera from IVP Integrated Vision Products (Woodinville, WA) measures three-dimensional ..shapes. The equipment can be used for test measurements, reading up to 10,000 three-dimensional profiles per second. The camera is based on the company's new image sensor with 1536 × 512 pixels. The system comprises a regular linear laser and a camera. The third dimension is calculated with the aid of triangulation.
The high-speed CO2 laser cutting and engraving system from Laser Solutions and Systems Inc. (Franklin, MA) boasts linear motors with acceleration of 0 to 100 inches per second. The MLS6456 is ideal for sheet and roll goods with conveyor, cutting and engraving 4 × 8 sets of acrylic and plastics, cutting and engraving wide web textiles with intricate patterns, engraving large marble murals and tiles and more. The system is available in two sizes: 56 × 68 inches or 56 × 80 inches with respective work support areas of 68 × 98 inches or 68 × 120 inches with accuracy and repeatability of ±0.002 inches ans z axis travel and height adjustment.
Non-ball lead screws
For vertical applications,non-ball lead screws from Kerk Motion Products (Hollis, NH) can be designed to self-lock and prevent back driving, without an external brake. Utilizing sliding friction between the nut and the screw to convert rotary input motion to linear output motion, the non-ball lead screws reportedly offer accuracy comparable to ground ball screws at a cost savings of up to 90 percent.
The inner-tube cutting head from Precitec Inc. (New Hudson, MI) is designed for Nd:YAG laser cutting from the inside out in close tight areas such as mounting holes or location holes in hydroformed subassemblies.