High-speed Cartesian Robot That Shortens Assembly/Inspection Cycle Times by Operating at High Speed, Ensuring High Rigidity and Demonstrating Excellent Straight Moving Performance
High-speed operation with commanded acceleration of up to 3.2 G
(maximum instantaneous acceleration: 4.8 G)
1. High Speed & High Acceleration/Deceleration
Shorten the cycle time of your equipment by operating at the maximum speed of
2500 mm/s and maximum acceleration of 3.2 G. The standard cycle time is 32% less than a conventional Cartesian robot.
|(Note) The standard cycle time represents the time required for going back and forth along the path shown to the right, consisting of a vertical movement of 25 mm and horizontal movement of 200 mm.
2. High Rigidity, Low Vibration
The newly developed dedicated cast aluminum frame ensures high rigidity. Also, the improved shape and vibration damping performance of the fastening brackets for XY-axes reduced the vibration at the tip of the Z-axis, while the vibration control function of the XSEL controller achieved substantial reduction of vibration during high-speed operation.
3. Efficient Operation Range
A wide operation range of 400 mm (X-axis) x 300 mm (Y-axis) is ensured. Square operation ranges have no wasteful space and are more efficient compared to those of multi-jointed robots and parallel-link robots that can only operate in circles due to their structure.
4. Straight Moving Performance
The high-speed Cartesian robot combines single-axis robots each performing linear motion, in order to demonstrate excellent straight moving performance.
Examples of Applications
Packing electronic components in boxes.
Screwing automobile parts.
Feeding/taking parts out work parts to/from a part inspection machine.
The customer described in this Application Story is a manufacturer of food handling equipment. They design and manufacture special conveying equipment that allows for cooling and heating to take place over a longer period of time while maintaining product throughput.
Knowing the types of machines the customer builds, Steve Harrold, one of Knotts Co's Strategic Account Managers, made contact with the customer to introduce them to Omron's newest MX2 AC Drive. The initial interest from the customer was solid. He mentioned that he may have an application in mind where something like the MX2 might make things work a little smoother. He wouldn't give up much information, but we decided to get the Omron factory specialist in for a face-to-face with the customer to iron out the details. What we didn't realize is that we were walking in to a perfect fit application for the Omron MX2 AC Drive.
From the beginning of the meeting the customer was being reserved and listening intently to the bullet points of why the MX2 is so good. He stopped Richard Sowah, Omron's Drives Marketing Manager, after one particular key feature (EZ-Coms) and said, "OK. That's what I needed to hear." From that point he proceeded to tell us of his prototype project and what he needed to accomplish with the drives to make this new product the leading edge machine in their industry.
The current machine uses two drives, one large and one small, to make the system run. One of the drives controls a large motor, around 10hp, to spin the entire conveying system while the other smaller drive pulls the belt through machine. Tensioning the belt becomes touchy and requires hands-on tweaking to get it right. Also, when the conveyor is loaded with product, the tension changes due to the added friction which can cause jams and poor system performance. The new prototype will employ many smaller drives linked together through the MX2's EZ-Coms (built-in 2-wire RS-485 based communications). This will allow for a single drive to be set as the master with the others (up to 31) linked together as slaves. The master would set the pace of the system and the other slaves would be following along based on their setup. This style of setup does not require a large PLC to communicate to each drive individually so the customer will save a considerable amount of money on the controls end of things.
At this point, the MX2 solution would add complexity to the tensioning setup that is already a little tedious in the current machine. To remedy this issue, and make it even easier to setup than the current machine, encoder pulses will be fed directly into the individual drives to monitor the actual speed of the motor. Also, using the EZ Flow Chart programming included in the MX2 drive, a PID instruction will constantly monitor the tension on the individual motors and adjust on the fly. What this creates is a complete and automatic semi closed-loop tensioning system for multiple axes all based off of the single master drive's frequency setting. Furthermore, when a load is applied to the belt (product dropped onto it), the drive will immediately compensate by increasing the torque and maintain the proper motor speed effectively reducing the possibilities of jams and system throughput decreases. Overall, this application was a perfect fit for the features and capabilities of Omron's MX2 AC Drive.
If you'd like more information on the MX2 AC Drive, or would like to set up an on-site demonstration, please click the button below and fill out your contact information.
Editor's Note: This is a guest post from Todd Youngblood of The YPS Group.
None of us can afford to waste time. Quite the opposite, we’re all constantly on the lookout for ways to save time. How about some easy pickins’? The process of customer/sales rep communication absolutely screams for streamlining.
Let’s say you’re an engineer looking to acquire “System X” or solve “Problem Y.” You’ll almost certainly start with some Internet research, narrow the field of suppliers, then invite 3-5 sales reps for a face-to-face meeting to get into due diligence.
How different are those 3-5 meetings? The sales folks have all been thoroughly trained in consultative selling. They all ask about your goals, your objectives, your strategy, your challenges, your requirements, what keeps you up at night, your decision process & criteria and what you’re looking for in a supplier. Ughhhh... How sick of answering the same questions over and over do you get?
Did you ever think about how sick the sales crowd is of asking the same questions over and over? Or how about the rest of the meeting ritual?
There’s you walking from your office to the reception area - and then back - with the inane chatter - and a stop at the coffee pot - and settling in seats - and swapping of business cards - and thank yous and you’re welcomes... All before the barrage of repetitive questions. Ughhhh...
It gets worse! The complexity of most decisions these days means you need to involve colleagues, bosses and subordinates; you’ll use a “decision network.” All of the above gets repeated 3-5 times by multiple other people in your organization.
There’s a better way. A few of the more advanced sales organizations are beginning to use a concept known as “e-Rep .” The notion is to embed the knowledge, insight and experience of the sales professional into electronic formats: text, image, audio, video and combinations thereof. That information is then available to you on-demand, at your convenience, 24 X 7 X 365. If it’s good stuff, you can forward it along to others in the decision network.
The concept applies to the buying side of the equation as well. Back to the example of the engineer looking for a solution... Answer all those standard questions about goals, objectives, features, functions, specifications, etc. in a short video, for example. Do it just once! Then send it to your long list of potential suppliers and take it from there.
Figure 15 minutes per meeting gets burned with walking, greeting, business card exchanging, etc. Take 5 sales reps X 5 people in a decision network and over 6 hours goes out the window never to be seen again.
Seems like a no-brainer to me. And that’s only considering the very beginning of the buying process. As a customer, it only makes sense to insist that your suppliers begin using the e-Rep concept right now! And the best way to start is to create your own “e-Buyer.”
Todd Youngblood learns quickly & shares everything he knows. Thirty plus years of methodical, relentless, “Think – Act – Analyze – Repeat” in the sales and marketing wars has generated an outsized mass of field-tested knowledge and insight. His education continues. Learn more at ypsgroup.com