From configurable components to component sizing and selection, the wheels and slides of change are in motion. And while electromechanical components continue to gain traction, pneumatic still has its place.
“The main advantage of electromechanical vs. pneumatic components is the ability to be flexible and more energy efficient,” explains Andy Urda, Yaskawa Electric America (www.yaskawa.com). “Pneumatic has low initial cost but no flexibility of motion and higher long-term energy costs.”
Technology advances in pneumatics have come a long way to bridge the gap, and electromechanical motion has dropped significantly in price, believes Bob Eisele, technical support representative, Amacoil (www.amacoil.com).
Pneumatics’ benefits include its ease of use, low initial costs and easy two- and sometimes three-position motion, says Ben Furnish, Electromechanical Automation Division, Parker Hannifin (www.parkermotion.com). The downsides are maintenance issues that mean higher total cost of ownership. “Electromechanical has its upsides — multiple stops along the travel, higher precision, more controlled motion, more flexibility in production and more energy efficient,” says Furnish.
Configurable products provide users with the flexibility to meet their demands rather than force them to select other components to be compatible with the product, adds Chuck Russell, C.O. engineering manager, Dodge Tigear-2 & Quantis, Baldor (www.baldor.com).
Prior to the existence of linear stages, machine builders had to size, model, test, procure and assemble individual electromechanical drive components such as rotary motors, electric drives, couplings, ballscrews, gear boxes and linear bearings, reminisces Steven Feketa, global product manager, linear motors and stages, Rockwell Automation (www.rockwellautomation.com). “With the introduction of stages, particularly those that are packaged with a motor, suppliers are able to characterize their stages to allow selection via software tools,” he says. “This software greatly reduces the time to market by helping eliminate the time spent up-front on engineering, assembly and testing for the OEM engineer.”
Electric actuator EGC is designed for high dynamic speeds and high rigidity. This modular actuator can be used as an individual component adapted to third-party motors or as a complete system provided by one source. The unit is available in toothed belt and ball screw designs, as well as different screw pitches.
|SIMPLIFIED MACHINE DESIGN
MP-Series integrated multi-axis stages have a flexible design that accommodates positioning the stages from above or below. The pre-engineered stages offer an out-of-the-box solution for precise two-dimensional positioning and velocity control. They carry a payload to 25 kg at an acceleration of 1 g at maximum payload.
|NO ELECTRONICS NEEDED
Model RG linear drive has mechanical control over travel direction and linear speed, eliminating the need for electronic controls. Reversal of direction is automatic regardless of the speed or rotational direction of the shaft. Length of travel is increased or decreased using manual-set end stops. Travel speed can be regulated using a manual control on the drive unit without requiring changes to motor speed or gearing.
|WORM GEAR REDUCERS
Ultra Kleen right-angle, worm gear reducers are available in quill and three-piece coupled input and with solid or hollow output. Made of stainless steel for washdown protection, the units are available in ratios of 17, 21, 23, 26 and 30 with center distances 1.75-3 inches and a factory-filled H1 food-grade lubricant.
Sigma Trac Plus Series integrated linear positioning slides offer peak force ranges of 220–600 N and stroke ranges of 70 mm to 1.8 m for a range of general automation applications. They can provide accelerations to 5 g and velocities to 5 m/sec.
IronHorse worm gearboxes come in four frame sizes and six gear ratios, 5:1 to 60:1. Constructed of cast-iron one-piece housings, the gearboxes have a C-flange input and carbon steel shaft with right-hand or dual-shaft output. Designed to change drive direction by 90°, the gearboxes are mountable in any direction, except motor pointing up.
|INDUSTRIAL GRADE POSITIONER
HD-N industrial-grade positioner offers bending moment of inertia for rigidity and minimal deflection, lubrication for life and maintenance-free bearings and ball screws. Positioners can come with custom motor mounts.
Parker Electromechanical Automation Div.
LaserTurn 1 is a complete motion and material handling subsystem. The system has an automated, pneumatically actuated Type D collet closer with a clear aperture for product feed-through and can support tubing diameters 0.1–7.9 mm in dry cutting applications and to 3 mm when configured for wet cutting. The collet closer is designed to minimize axial tube motion during clamping operations by keeping the collet stationary and moving the tapered mating surface during open/close.
|METRIC CLUTCHES AND BRAKES
Deltran MCS/MBF Series RoHS-compliant metric clutches and brakes are available off-the-shelf in diameters 63 to 280 mm, torque ratings from 5.5 to 500 Nm, seven different frame sizes and a selection of DIN 6885/1-compliant metric bores and standard metric keyways. Customized versions are also available.
|LARGE GEAR UNITS
X series large industrial gear units comprises 23 different sizes, each with a different torque rating, that meet the demand for the large drives required to transport packaged and bulk goods, as well as large processing machines. The gear units feature helical and helical-bevel technologies, which deliver torques to 4.1 million lb-in. with unit weights topping 4 tons.
EMC electromechanical cylinders, offered as an alternative to hydraulic and pneumatic cylinders, come in six sizes ranging 32-100, with stroke lengths to 2,000 mm, and speed capabilities of up to 1.6 m/sec. Each unit is rated to an IP65 degree of protection.
|POSITION IT RIGHT
Type GLM20 1-axis position system can operate at speeds to 4 m/sec and 2 G with accuracies of 1 micron or better. It provides 3,000 N (674 lb-f ) of continuously usable linear force and an instantaneous peak-line-force of 4500 N (1,011 lb-f). Multiple sliders are installed on a single-axis base to allow sliders to be individually controlled. Stroke lengths are up to 4.4 m.
MDrive NEMA size 17 linear actuators combine all-in-one integrated step motor and driver technology with linear motion in a 2.3x2.2x1.7 in. package. They are available in non-captive and external shaft styles. With non-captive shafts, a screw extends through the MDrive and moves axially as the motor rotates. With external shafts, a rotating screw integral to the MDrive motor moves a screw-mounted nut axially, with a choice of general purpose or anti-backlash nuts.
Intelligent Motion Systems
DM2 Series E Crossflow Serpar double valves are designed with total dynamic monitoring and memory for Category-4 machine-guarding applications. They are available in nominal size 2 with port sizes ¼ and 3/8, NPT and BSPP threads. The pneumatic safety-related valves address ANSI standards for machine safety, including the Z244 (lock-out), B11.19 (machine guarding) and B155 (packaging machinery).
Portal axes are available with toothed belt or ball screw drive in various sizes. They are designed for loads to 220 lb (100 kg). The same adaptation interfaces are used on all units, irrespective of the guide and drive system. Tooth belt drives have stroke lengths to 216 in. (5,500 mm) and positioning speeds to 8 m/sec. Ballscrew drives have a stroke length of 118 in. (3,000 mm) and speeds to 3,000 rpm.
|RIGHT-ANGLE GEAR REDUCER
LPK right-angle gear reducer is available with acceleration torques to 250 Nm, torsional backlash less than 10 arc-min and a peak speed of 6,000 rpm. The gearhead comes with 10 reduction ratios from 3 to 10. LPK can be supplied with Alpha rack-and-pinion system and Alpha shaft couplings.
Alpha Gear Drives
ZBX Series anti-backlash linear actuator assembly for vertical applications requiring noise or vibration control has a self-lubricating, polyacetal nut that is radially preloaded on a 303 stainless steel screw. The assembly offers torque consistency and repeatability when traversing in either direction through its unique load transfer capability.
Single-rail positioning stages have a small footprint, offer a speed of 6 m/sec, high acceleration to 12 g, zero cogging, resolution to 0.1 μm, repeatability to ±1 μm and load capacity to 25 kg. The stages are designed for applications requiring high acceleration, high accuracy and repeatability, such as high precision printing, Y-axis for pick-and-place equipment and robotics, vision inspection and parts transfer.
|HIT THE BRAKES
Series BFK458-L spring-applied brakes are released by applying DC voltage to an electromagnetic coil. Life is estimated at 10,000,000 cycles. There are four sizes with rated torques 4–46 Nm; shaft sizes 10–25 mm and brake coils can be supplied for 24 V connection or rectified mains at 103, 180 and 250 V.
Lenze AC Tech
Single-axis actuators in 208 configured styles are compatible with most servo motors and designed to provide linear motion in a variety of general industrial assembly applications, as well as packaging and automotive applications.
|MOTION IN A SMALL PACKAGE
Modular, pre-lubricated rotary actuators allow customization of designs and components tailored for an application. Either complex or simple actuator arrangements can be engineered and ready to mount for plug-in operation with AC or DC power. Optimized torque is up to 105 Nm and speeds are to 20 rpm.
|MOTOR MOUNT KIT
LSK custom linear slide kit motor mount solutions mount a motor or gearbox to a linear slide, belt or ball screw actuator and any motor or gearbox. They are offered in multiple sizes, with several different custom-bored coupling options.
|BLOCK STYLE SLIDES
Linear slides in 12-, 20- and 32-mm bores with strokes ½–10 inches and guide shafts 3/8–3/4-inch diameter have anodized aluminum body with built-in repairable air cylinder and a combination of mounting holes to facilitate rigid mounting in tight spaces. Toolbar has counter bored tapped through holes on top, front and bottom faces for quick tooling attachment. Front face has slip-fit dowel hole and slot for repeatable precision tool alignment.