LDC-Series/ LDL- Series Linear Servo Motor

Name: LDC-Series/ LDL- Series Linear Servo Motor
Uploaded: 2017-12-11T22:02:49+00:00
Duration: PTM29S28
Channel: Arron Rich
Description: LDC-Series/ LDL- Series Linear Servo Motor

LDC-Series/ LDL- Series Linear Servo Motor

Copyright © 2009 Rockwell Automation, Inc. All rights reserved.
Why Linear Motors? They provide features that help you increase the throughput of your machinery  Greater profitability They are more reliable than other linear actuation methods Less Downtime  Greater profitability They open the door to more flexible machinery while maintaining high levels of production that you would normally only achieve with dedicated machinery  Differentiator vs. Your Competition Improve precision which in some cases can minimize waste that your machines generate  Higher Efficiencies Greater Profitability Read Slide As Is Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Increased Throughput How Can Linear Motors Increase Your Machine’s Throughput? They can achieve faster settle times because they are directly mounted to the payload….no “spring” Other technologies such as belts, ballscrews and rack & pinions have to deal with “spring” introduced by Couplings between the rotary motor and the driven item such as the ballscrew, pinion or pulley. Clearances or backlashes in gear-boxes and ballscrews. The spring in the belt itself The illustration show that the linear motor coil (yellow in color) is mounted directly to the slide that the payload is mounted to….. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Increased Throughput How Can Linear Motors Increase Your Machine’s Throughput? They can achieve up to 10gs of acceleration up to 10m/s of velocity Belt and rack & pinion actuation can achieve high velocities and accelerations… but at a cost. High rates of wear High levels of noise Ballscrew actuation …. Well….At least they’re fairly precise….Not something often used for speed. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Increased Reliability
How does using linear motors make your machines more reliable? Linear Motors have NO wear items Ballscrew, belt and rack & Pinion have several wear items, that need maintenance and even replacement. Radial bearings (end of screws, in pulleys, supporting pinions) Ballscrew nuts and pinions Ballscrews, belts and racks Gearboxes Linear Motors are also easy to align/install Linear Motors consist only of the magnet channel or plate and the coil…there are NO mechanical wear item that need lubrication or even replacement. Linear motors are easy to install as they only require you to bolt the magnet track down to the base (no alignment with calipers or shims required) and to bolt the coil to the slide. Ballscrews and rack & pinions require careful alignment in order to prevent premature failure due to excessive wear that can occur as a result of high stresses induced due to miss-aligned components. Belt drives require careful alignment of the pulleys so the belts don’t skew and come off the pulley…they are also prone to “adjustment” by users to catastrophic results. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Increased Machine Flexibility
How can using linear motors increase the flexibility of my machinery? Inflexible machines are those that are designed for a specific task. From a linear motion perspective, they often use one of the following technologies: Cams Linkages Rodless Pneumatic Cylinders The simplest changes in scope can require massive amounts of set up to remove and install different tooling. Linear motors, as a result of their direct drive configuration, high accelerations and speed, can come close to achieving motion similar to that from cams, linkages and other 2 point motion devices. Some existing applications taking advantage of this are: Flying shears…can allow for different length cuts Vertical Form-Fill-and Seal machines…allow for different size packages Multi-axis on the fly laser cutting can take place of dedicated large stamping dies for easy change over from one shape to another. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Elimination of Waste How can linear motors result in greater efficiencies and less waste? Linear motors, when combined with high precision linear encoders ($100), can easily obtain repeatability in the 2 to 3 micron range. If you’re cutting product and can’t have less than a certain amount go into a package, you can reduce that margin by cutting closer and ship less free goods out the door. If you’re having to perform secondary operations (sorting or trimming) on the product you just made because you just couldn’t hold consistency, the higher precision of linear motors can help to reduce this. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application What technologies compete with linear motors? Ballscrews and rotary servo motors Belts and rotary servo motors Rack & Pinions and rotary servo motors Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application General Comparison Precision better than .02mm Speed greater than 2m/s High G’s (greater than 3g’s) Throughput Reliability 1mm Lower Precision Higher Speeds Longer Travels .0001mm Higher Precision Lower Speeds Shorter Travels 5m/s & 5m 0m/s & 0m Belts Rack Linear Motor Ball Screw Let’s take a look at comparing the various linear motion actuation technologies from a precision, speed and travel length capability. Belt drives are great at achieving high speeds and long travels, but are limited in precision to roughly .2mm repeatability Rack and pinions, like belts can handle high speed and travel, but do a little bit better on a precision basis, reaching levels of .04mm repeatability. Ballscrews on the other hand achieve some very high precision with repeatability in the area of .003mm arena, but are lacking in speed. Linear Motors is the only technology where you are able to achieve both precision along with high speed and travel lengths…..Where they overlap with other technologies is where their use only makes sense on some other features and benefits that linear motors offer that we’ll explore next. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application General Comparison J L K J is .005mm K is .025mm
Criteria Linear Motors Belt Drive Ballscrew Rack & Pinion Comments Precision J L K J is .005mm K is .025mm Servo Responsiveness Linear Motors are mounted direct the payload, no coupling or inertia matching Velocity J is 5m/s L is 2.5m/s Thrust Force J 10’s of kN K 5kN Reliability Linear Motors Have No Mechanical Parts to wear out or maintain. Ease of Assembly Use of Absolute Encoders with Kinetix Drives Kinetix drives currently are not compatible with linear absolute encoders. Noise Level No Belt, Gear or Ball Nut Noise Ability to have multiple heads on a single axis This chart expands on the pluses and minuses of the 4 linear actuation technologies. One area that sets linear motors apart from the other technologies is Servo Responsiveness…the ability to move and stop at a position very quickly….This as we mentioned before can provide increased throughput for your machine. The other area is reliability…if your customers value less maintenance and/or downtime, than this can be an important factor in your choosing to look at using linear motors. Assembly is one where because of the simplicity in installing a linear motor versus other actuation methods, you may be able to reduce the amount of labor that you require to assemble your machines….It can also increase the reliability as you don’t have to worry about miss-alignment issues resulting in increased wear. One item that may or may not resonate with you is noise level….with linear motors, there are not rotating or meshing parts that generate noise….making your machines quieter and perhaps seeming to have more quality than those having other actuation methods. The last area is the ability to have multiple independently moving heads on a single axis. Here both rack & pinion allow you to have multiple heads that move independently which can be use to increase productivity or combined to increase applied thrust. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application Summary of Comparison Versus precision ground ballscrews Increased precision  less waste and part variation Greater smoothness  Increased consistency and perceived quality Faster move and settle times  Increased throughput No mechanical wear parts to lubricate or replace  Increased productivity Easier to install  No misalignment problems to cause premature failure  Faster installation, reducing machine cost Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application Summary of Comparison Versus belt drives Increased precision  less waste and part variation Greater smoothness  Increased consistency and perceived quality Faster settle times  Increased throughput No mechanical wear parts to lubricate or replace  Increased productivity Less noisy  perceived quality improvement. Versus Rack & Pinion Easier to install  No misalignment problems to cause premature failure  Faster installation, reducing machine cost Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application Selecting the right type of linear motor Feature Iron Core Ironless Benefit Non Cogging L J Provides for extremely smooth motion. High Force Density ($’s) Allows for the use of smaller, less expensive motors. Also allows for higher available force motors. No Magnetic Attraction Between Coil and Magnet Track Allows you to use smaller, less expensive linear bearings to guide the coil. No Magnetic Field Exposure Eliminates the need for shielding in cases where the application is sensitive to magnetic fields. Max Amplifier Input Voltage 460V AC 230V AC If you decide that you want to use a linear motor, then comes the choice of which type of motor it is you would like to use…Iron Core style or Ironless…..This chart helps you to better understand when you might want to use one versus the other. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application Linear Motor Applications – What does a basic axis look like? End Stops Bumper Springs Carriage Linear Guides Bearings Magnets Cable & Cable Carrier Encoder Head Coil Encoder Scale Junction Box Now that you’re thinking about using linear motors, you should understand all the various components that you will need to build your complete axis of motion. Base Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application Moving Coil Most common configuration Used to transport or position a payload Used in combinations to form gantries Multiple Moving Coils Adds additional functionality Multiple process heads Variable clamping/sealing/cutting 2D motion with one axis Now lets take a look at the various configurations that linear motors can be used in. The first being the most common…A moving coil…..The photo shows an example of how linear motors are used to build a large gantry which in this case is used to pick and place components to form an airfoil. The 2nd illustration shows that you can combine two or more coils on a single magnet track…..The photo shows how by applying linkages to these two slides, you can achieve 2-dimensional motion of the gripper attached to the linkage. If the slides move together, the griper moves left or right. If the slides move apart, the gripper goes up, and if the slides move towards each other, the gripper moves down. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application Moving Magnet Short Stroke, light load, high acceleration NO moving cables Multiple Magnets and Multiple Coils Adds additional functionality Variable clamping/sealing/cutting Multiple process heads The moving magnet configuration is where the coil, instead of the magnet track is mounted to the bed of your machine along with the encoder read head. The magnet track is then mounted to a slide that is supported by linear bearings. It is then this slide, with the magnet track that moves back and forth. This type of arrangement is used where you have a short stroke and light payload and you want very high accelerations….A big benefit of this is you also have no moving cables to deal with. The other illustration shows how you can combine two magnet tracks to achieve very close pitch or spacing between slides. The top track has two coils attached to the outer two slides and the lower track has one coil attached to then middle slide…..The photo shows how you can use this to obtain very close spading on the z-axis rod style actuators shown. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Application Vertical Moving Coil Uses a counter-weight Limited to 1g of acceleration The last configuration shows linear motors being used in a vertical orientation. Because the motor would always be on to resist gravity, a counter balance is often used to minimize the requirement for the motor to hold the slide from falling. The only drawback is that this configuration can not move more quickly than 1g. If faster acceleration is required, you would need to locate a 2nd pulley at the bottom of the axis and connect the cable to the bottom of the slide shown on the front, around the bottom pulley and to the counter balance on the other side. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Why Use Allen-Bradley Linear Motors?
Easy to select and optimize with Motion Analyzer 4.7 (June 2009) ….part of Mechatronics focus Easy to include in your design with the availability of C.A.D drawings and models. Easy to commission with RSLogix 5000 software. Easy to program with the availability of Add On Instructions (AOIs). Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Product Selection Selecting the right size linear motor - Summary Voltage desired Type of motor desired (Iron Core or Ironless) Payload (weight of carriage and object(s) mounted to carriage) Motion Profile (travel distance, time to make move, dwell time, etc.) Ambient Temperature and type of environment (industrial, clean, vacuum, etc) Orientation of axis (flat, vertical, angle) Resistance to motion (linear bearing friction, seal drag from bearings, external force, etc.) Limitations you may have on overall length, width or height of your axis. Distance of cable from motor to amplifier. Be conservative in your sizing. Unlike other technologies, you can not increase the motor force without making the coil longer or wider, which will may affect many other parts in your machine. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Verify Direction and Resolution With the drive DISABLED, move the axis and verify that the ActualPostion tag increases in value as you move in the positive direction. If the direction of travel does not match what has been defined by the motor power and Hall Sensing wiring, then you can change the direction by changing the encoder wiring using following table Move the axis a known distance, and verify that the Actual Position tag moves the correct distance in millimeters. Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Commercial Information
Lead Time Flying lead coils – 15 days Connectorized coils – 20 days Magnet channels – 15 days Encoder Connector Kits – 10 days Bulk Head Connector Kits – 10 days Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

How are these motors different than the Anorad motors? The LDC-Series and LDL-Series are subsets of the Anorad product offering. If there is a need for an item that falls within the Anorad offering, but is not a “standard” LDC-Series or LDL-Series motor, we can access the item via the custom quote process. In these cases, you would be working with an Application Engineer from NY that can provide you with the information that you would need to enter the custom quote request. The Allen-Bradley branded product also has as a standard, termination to plug & play with Allen-Bradley continuously flexing and extension cables. The Allen-Bradley branded product is supported through Allen-Bradley distributors Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Manufacturing, Assembly & AE Applications Solar (Scribing & Deposition) Large Assembly These are some examples of where linear motors have been successfully applied. Medical & Scientific & Electronic Inspection & Assembly Dispensing/Inspection Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Other Application Spaces Machine Tools Multi-spindle Screw Machines Cutting Tool Positioning…..Fast accurate positioning Vertical & Horizontal Milling Machines Cutting Tool Positioning….Accurate positioning Tool Changers…..Fast Slant Bed Turning Machines Laser or Plasma Cutting Machines Cutting Head Positioning….Fast and accurate positioning Flying Cut-off Machines Following Axis….Fast and highly dynamic Coordinate Measuring Machines Probe positioning…..Accurate positioning Large Format Routers Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

Other Application Spaces Tire Inspection Moving probe heads…..Reliable, fast and accurate motion Semi Conductor Wafer Cutting, Handling & Marking Smooth, precise motion Flat Panel Large Format Gantries Copyright © 2009 Rockwell Automation, Inc. All rights reserved.

LDC-Series/ LDL- Series Linear Servo Motor
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LDC-Series/ LDL- Series Linear Servo Motor

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