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Topic: Linear motor

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	Linear Actuators, Hybrid Linear Actuators, Canstack Linear Actuators, Captive, Non-Captive, External Linear Actuators ...
		Linear Actuators, Hybrid Linear Actuators, Canstack Linear Actuators, Captive, Non-Captive, External Linear Actuators - Haydon Switch & Instrument
		Haydon’s hybrid stepper motor based linear actuators are available in frame sizes ranging from 21mm square to 87mm square.
		Haydon’s rotary stepper motors are built to provide exceptionally high torque to size ratios.
	www.hsi-inc.com (156 words)

	Linear motor - Patent 4546277
		A linear motor in accordance with claim 3 wherein the magnets are mounted to the inner housing surface so as to form air gaps between the radially polarized magnets and the pole piece, and the armature coil is disposed within the air gaps.
		A linear motor in accordance with claim 3 wherein the radially polarized magnets are mounted to the pole piece so as to form air gaps between the housing and the radially polarized magnets, and the armature coil is disposed within the air gaps.
		A linear motor in accordance with claim 1 wherein the radially polarized magnets are constructed at least in part of a permanently magnetizable samarium cobalt material.
	www.freepatentsonline.com /4546277.html (4906 words)

	Linear motor Information
		A linear motor is essentially an electric motor that has had its stator "unrolled" so that instead of producing a torque (rotation), it produces a linear force along its length.
		Outside of public transportation, vertical linear motors have been proposed as lifting mechanisms in deep mines, and the use of linear motors is growing in motion control applications.
		High-acceleration linear motors also require very strong magnetic fields; in fact, the magnetic fields are often too strong to permit the use of superconductors.
	www.bookrags.com /wiki/Linear_motor (799 words)

	Linear Actuators, Linear Motors
		DC Electric Linear Actuators, are used in just about any application where you need to move or lift something.
		Our Linear actuator, linear motor models come in 5 forces and speeds, from 28lbs to 400lbs force, or 2" per sec to 1/3" per sec speed.
		This new range is ideally suited to applications where the Linear Actuator needs a short retracted length.
	www.firgelliauto.com (235 words)

	Linear Motor Advantages
		In a linear motor system the motor is connected directly to the moving load.
		Since the frameless parts of the linear motor are non-contact, and no limitations of a mechanical transmission are present, both very high speeds and very low speeds are easily obtainable.
		Linear motors have few components, therefore the need for ball screw components such as nuts, bearing blocks, couplings, motor mounts and the need to maintain these components have been eliminated.
	www.motionvillage.com /products/motors/ddl/advantages.html (500 words)

	Technical Repoert No.5 :Linear Servo Motor System (Site not responding. Last check: 2007-10-18)
		Linear servo motors are attracting attention due to their high-speed controllability as a direct drive mechanism that has a linear motion.
		Three series of linear servo motor, the linear guide system with core developed by Kollmorgen, the linear guide system without core developed by Kollmorgen, and the cylinder system with core developed by us, were released at the System Control Fair 97 and 97 International Robot Fair held in October 1997 (see photo).
		The linear motor of the linear guide system generally has a velocity of 1 to 3 m/s and acceleration of 2 to 3 G, whereas the newly developed motor has a velocity of 5 m/s or more and acceleration of 5 G or more.
	www.sanyodenki.co.jp /techrepo/5e/e_p11.html (1485 words)

	Spiral linear motor invention
		In a spiral linear motor 1, a rotator 3 and stator 2 are both constituted having a spiral shape and, by joining together both spiral-shaped parts, a drive force is produced in the axial direction during rotation in a spiral shape.
		By affording the spiral linear motor a spiral shape, a large drive force can be obtained similarly to that of a reduction gear and a large drive force can be obtained by utilizing a large area that lies opposite in the axial direction of the rotator and stator.
		Further, the stator of the spiral linear motor of the present invention has windings of two phases that are mutually displaced through 90 degrees on both spiral-shaped side faces of the hollow magnetic poles forming a center space wound in the axial direction of the stator.
	www.freshpatents.com /Spiral-linear-motor-dt20051208ptan20050269893.php (1137 words)

	Driving Characteristics of Cylindrical Linear Synchronous Motor (Site not responding. Last check: 2007-10-18)
		A flat-plate linear motor entails a very high magnetic attraction between the stator and rotor, so that care must be exercised with regard to the rigidity and friction of the supporting mechanism.
		The linear sensor uses an optical incremental encoder with a resolution of 1 micrometer, and the motor contains a linear scale on the mover and a sensor head on the stator.
		Linear servo systems have been spotlighted as a new direct-acting mechanism that meets the requirements for higher velocity and acceleration, as well as higher precision, and are used for conveyors and laser processors.
	www.sanyodenki.co.jp /techrepo/8e/k/index.htm (1417 words)

	Linear motor - Patent 6879066
		In the conventional linear motor thus constructed, the moving part 4 is assembled by first winding the coils 10 around the individual magnetic teeth 8, 9.
		Since the conventional linear motor is assembled by inserting the magnetic teeth 9 between the successive magnetic teeth 8 as stated above, the coils 10 wound around the magnetic teeth 9 slide over the coils 10 wound around the magnetic teeth 8 with friction.
		16 is a plan view showing the construction of a linear motor according to a fourth embodiment of the invention, in which elements identical to those of the foregoing third embodiment are designated by the same reference numerals and a description of such elements is omitted.
	www.freepatentsonline.com /6879066.html (3901 words)

	Linear Stepper Motor Actuator
		Linear stepping motors are ideal for positioning applications with light to medium payloads.
		Linear stepping motors are capable of very precise positioning and velocity controls when used with micro-stepping drives and indexers.
		IntelLiDrives linear stepper motor compatible with the same full step or micro-stepping electronics used with rotary stepping motors.
	www.intellidrives.com /linear-actuator-LinearStepper.htm (318 words)

	Luminos - Explanation of Linear Motion™
		Linear Motors allow sub-nanometer resolution using a combination of flexures and DC electromagnets.
		The X and Y actuators (micrometers or stepper motors) are still fully functional and can be used in conjunction with the linear motors.
		These linear motors, while useful for sub-nanometer applications, can also be used in dithering applications allowing a relatively fast periodic movement to be superimposed on the actuator movement.
	www.luminosindustries.com /technical/LinearMotor.asp (211 words)

	Linear motor for toy magnetic levitation train
		Normal (rotary) DC motors are made of three parts: an outer magnet, an inner rotating coil, and a commutator switch.
		A DC linear motor is also made up of three parts: a long magnetic "stator" track, a moving coil, and some sort of "commutator" to reverse the poles of the coil.
		Linear motors are like normal motors which have been unwrapped and flattened out.
	amasci.com /maglev/linmot.html (783 words)

	Linear motor for toy magnetic levitation train
		Normal (rotary) DC motors are made of three parts: an outer magnet, an inner rotating coil, and a commutator switch.
		A DC linear motor is also made up of three parts: a long magnetic "stator" track, a moving coil, and some sort of "commutator" to reverse the poles of the coil.
		Linear motors are like normal motors which have been unwrapped and flattened out.
	www.amasci.com /maglev/linmot.html (783 words)

	Rockwell Automation
		Linear motors, on the other hand, offer the system designer an elegant alternative in that they produce linear motion directly and therefore eliminate the need for conversion mechanisms such as leadscrews, belt drives, and rack and pinions.
		Many spec sheet parameters of linear motors are similar to their rotary counterparts (with a conversion of rotary units to linear units).
		A linear motor acts directly on the moving load thereby allowing a higher percentage of applied power to be delivered to the load.
	www.rockwellautomation.com /anorad/products/linearmotors/comparison_wp.html (2565 words)

	LinMot - Linear Motors
		If a linear motor is to move a load mass 45 mm, the time taken between the definition of the set-point and standstill at the target position is, according to the example in the diagram, about 52 ms.
		The limit of performance of a linear motor is defined for short-time operation by the maximum force and maximum speed of the slider alone.
		The slider of the linear motor is moved in or out until the trigger signal of an external sensor goes from 0 to logical 1.
	www.seltrol.com /Limot-linear-motors.html (1927 words)

	Stepper Motor Theory - Haydon Switch & Instrument - A Tritex Corporation Company, stepper motor theory, magnet ...
		The linear travel per step of the motor is determined by the motor’s rotary step angle and the thread pitch of the rotor nut and leadscrew combination.
		In general, motors should be designed in a device to run at 40% to 60% of their maximum load capability.
		If the motor is used at a reduced duty cycle and excessive voltage is applied to the motor, the “on” time must be such that the maximum temperature rise for the motor is not exceeded.
	www.hsi-inc.com /stepper_motor_theory.php (1988 words)

	Trilogy Systems Corporation - The Linear Servo Motor Company
		They are linear three phase brashness DC motors, also known as AC servo motors, that are powered by standard brashness amplifiers operating in torque or current mode with, typically, a linear encoder for position feedback to a motion controller to control position, velocity and acceleration.
		Linear motors, unlike rotary motors, do not have large surface area, finned cylindrical metal housings to assist in heat rejection.
		As with all motor applications, it is important to size linear motors according to the continuous or RMS current.
	www.trilogysystems.com /html/basiclm.html (1146 words)

	Linear Motor
		The direct drive linear motor delivers good performance in terms of accuracy, velocity and acceleration compared to conventional rotating systems with toothed belts or screw spindles.
		The LIMMS linear motor is a brushless, three phase, moving coil, linear servo-motor.
		Motor is robust and free of maintenance (because of the absence of brushes).
	www.20sim.com /webhelp4/demo/Control/Advanced_Control/LinearMotor.htm (440 words)

	Feature Article - Linear Motor Technology for CNC Die Sinker EDMs - From the Operator's Perspective - 10/00
		Since linear motors generate a lot of heat, coolant pipes were added throughout the magnetic coils to keep them at a constant temperature as seen in Figure 2.
		From an operator standpoint, linear motor technology allows users to EDM samples that were once thought of as impossible or impractical to do on a non-linear EDM.
		After using the linear motor sinker EDM, he thought that the linear motor EDM is very accurate and easy to get up and going because you do not have to consider flushing.
	www.moldmakingtechnology.com /articles/100001.html (990 words)

	Linear Motors and Stages: Baldor, a leader in motion control, servo, linear motors, energy efficient electric motors ...
		Linear motors consist of two parts – a stationary track or “platen” and a moving “forcer”.
		They can be provided as a stand-alone linear motor assembly or as a complete stage – built with a housing or enclosure with linear bearings, limit switches, cable track/carrier, protective bellows and linear encoder in a wide variety of lengths.
		The linear induction motor consists of a “primary” which is a coil assembly, and a “reaction plate”.
	www.baldormotion.com /products/linearproducts/overview.asp (1133 words)

	Trilogy Systems Corporation - The Linear Servo Motor Company
		Brushed motors should not be used due to the problems associated with brush wear and heat generated at the interface.
		The requirements that usually point to a linear motor are long life or number of cycles, high speed, very precise positioning, no wear, low noise, clean room or vacuum compatibility, and low maintenance.
		These include dimensional accuracy, repeatability from motor to motor, quality of workmanship, rugged industrial design, expertise in the overall systems design and a quality program to ensure that proper testing is performed before the product is shipped.
	www.trilogysystems.com /html/faq.html (905 words)

	Copley Motion Systems----TT Micro
		The tubular linear motor has only two components, the rod and the forcer.
		The benefits of linear motors are readily available to machine manufacturers throughout industry.
		Traditionally, linear electric motors have been designed by "opening out flat" their rotary counterparts.
	www.copleycontrols.com /motion/technologies/motor (492 words)

	Modular Linear Actuators, 2007 Catalog
		Modular Linear Actuator EHT/EHK 40, 60, 80, 100, 125
		Modular Linear Actuator EGZ 30, 40, 60, 80
		Modular Linear Actuator DLM 120, 160, 200 Dimensions (mm)
	nook.texterity.com /nook/modularlinearactuators (3873 words)

	Linear motors - all the Manufacturers \| Industry \| Industrial \| Suppliers \| OEM \| - DirectIndustry
		Aerotech linear motors are direct drive and consist of a noncontacting forcer coil and "U-channel" rare-earth industrial magnet track.
		Since the coil and magnet manufacturer assembly of linear motors do not make contact, they are ideally suited for cleanroom and vacuum compatible environments.
		Linear motor Linear motor Table LT is a direct drive positioning table featuring a low sectional height and light weight.
	www.directindustry.com /industrial-manufacturer/linear-motor-64703.html (744 words)

	Coreless linear motor invention
		An object of the invention is to provide a coreless linear motor which can suppress the increase in the temperature of an armature winding.
		These coreless linear motors, which are so disclosed, are advantageous in that there is generated no cogging force due to them being coreless, that is, the velocity ripple is small.
		In addition, it can be raised as an advantage of those coreless linear motors that they have high insulation properties due to the coils of concentrated winding being disposed without being superimposed on one another.
	www.freshpatents.com /Coreless-linear-motor-dt20060810ptan20060175907.php (1240 words)

	PI: Piezoelectric Motor, Ultrasonic Piezo Linearmotor, Piezo Linear Motor, Piezo Motor Stage, Linear Positioner, Linear ...
		PI: Piezoelectric Motor, Ultrasonic Piezo Linearmotor, Piezo Linear Motor, Piezo Motor Stage, Linear Positioner, Linear Actuator Piezomotor, Piezomotors, piezo motors
		Piezo linear motors can be divided into two groups: resonant motors (ultrasonic motors), and quasistatic motors.
		Step and continuous piezo motors are in principle nonmagnetic and vacuum-compatible, a requirement for many applications in the semiconductor industry.
	www.physikinstrumente.de /products/section7/piezo_motor_index.htm (363 words)

	Linear Motor Stage LMS-300
		Linear Motor Stages of the structural series LMS-300 and LMS-180 are mainly employed for modern electronic production and laser application.
		Linear Stages LMS-300 and LMS-180 are driven by linear motors without iron.
		Optionally the Linear Stage LMS-300 can be equipped with a second linear motor resulting in higher speeds, high dynamic processing and more power.
	www.micos-online.com /LMS_300.html (200 words)

	Linear Motors by CLD, California Linear Devices, Inc.
		The CLD Linear Motor is essentially a conventional brushless motor with an unconventional twist.
		The result of these design improvements is the CLD linear motor : a motor about the size of a blender with all the advantages of existing technology and none of the disadvantages.
		In short: a motor poised to replace a portion of today’s pneumatic and ball screw, as well as some hydraulic motion control technology.
	www.calinear.com /technology.htm (199 words)

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