Automation Advances at FANUC 2017 Private Show
Updates unveiled at the company’s annual event promote higher-volume production, easier programming and better monitoring capability across product lines.
With 61 years in the automation industry, FANUC is a company that practices what it preaches. Touring the campus of the company's world headquarters at the foot of Mount Fuji is impressive not just for the technology itself, but also for how it is applied in production. Within various buildings on the campus in Oshino, Japan, automated cells consisting of FANUC robots powered by FANUC servomotors are at work assembling more robots and servomotors, largely unattended by humans. The image sends a clear message about FANUC's philosophy with regard to the repeatability and productivity of its technology.
I had the opportunity to visit the 1.2-million-square-meter campus during FANUC's annual Private Show, hosted April 10-12, 2017. Nearly 70 FANUC customers and integrators traveled from North America to attend the first day of the event and take in new and existing technologies from the machine tool, robotics and factory automation divisions. Some of the highlights are detailed below.
Toward High-Volume Production and More Flexible Control
The company's RoboDrill machining platform has seen enhancements, with many of these—including improved automation support and spindle performance—geared toward bringing the system into high-volume production. Though it's primarily known as a drilling platform, the RoboDrill is also capable of tapping and milling in five axes, says Lou Finazzo, general manager, FANUC America, RoboDrill sales in the Americas.
The machine tools are designed for robot integration and feature doors on three sides that can be servo-driven for automated operation. The larger front door is commonly used for human or collaborative robot (cobot) access, while the side doors are well-suited for robotic arm loading and unloading. When robot motion is coordinated with the motion of the doors, it is possible for the arm to anticipate the movement of the door and vice-versa, reducing load/unload time to as little as 2.5 seconds, Mr. Finazzo says.
The Z-axis stroke has been expanded from 330 to 400 mm in an advanced version of the machine tool, and maximum tool mass has been increased to 4 kg. The RoboDrill machine tools can be equipped with a choice of four spindles, depending on the application. The high-speed spindle option now offers a maximum speed of 24,000 rpm, with 1-minute-rated power of 26 kW. Power has also been increased to 26-kW in the high-torque spindle, which also offers 1-minute-rated torque of 80 Nm and maximum torque of 100 Nm.
Chip control within the RoboDrill also has been improved over previous versions. Mr. Finazzo explains that in the past, this machine has had difficulty with chip clearance, which caused undue wear to the table and was a barrier to high-volume production. To ease chip evacuation, the RoboDrill has been updated with a tapered bed and 1,000-psi through-spindle coolant to drive chips to the back of the machine, making it better suited to high-volume usage.
Many of the RoboDrill enhancements exhibited at the FANUC Private Show were meant to address challenges faced by automotive OEMs and suppliers. As automotive components continue to get smaller and lighter, the RoboDrill has become an ideal choice, Mr. Finazzo says. Its four spindle options, including high-torque, high-acceleration and high-speed spindles in addition to a standard version, enable the maximum machine performance necessary for applications in the automotive market.
Though high-volume applications were the focus during the event, the RoboDrill is also suitable for high-mix and other applications, notes Steve Bond, national sales manager, FANUC RoboDrill, RoboCut Products of Methods Machine Tools (authorized by FANUC America as the exclusive distributor of RoboDrill and exclusive importer of FANUC RoboCut in North America).
A RoboDrill equipped with the high-speed spindle option performed high-speed, three-axis machining of an aluminum part, demonstrating the platform’s capability for applications in which a high volume of metal must be removed, such as in the aerospace industry. Another demo showcased the combination of FANUC’s RoboCut wire EDM platform with the RoboDrill for a finishing application; PCD tools made via EDM were used to scribe a picture frame part on the RoboDrill for a highly polished edge, such as what might be required in telecom applications.
The RoboDrill’s CNC features FANUC's Intelligent Human-Machine Interface (iHMI), which has been upgraded with increased memory and 1,000-line lookahead. New machining simulation capabilities support detecting multiform clash as well as distance and time of air cutting.
The iHMI now offers two modes of operation. A new, graphics-based interface supports ease of use for newer or less-experienced operators. However, the HMI can be switched over to the previous G-code interface for users who prefer this. While some more advanced functions still require G-code programming, the control is a good compromise for both more- and less-experienced operators.
The key to the iHMI, however, is its updated home screen, which organizes operations with icons grouped in four rows: Planning, Machining, Improvement and Utility. This home screen will apply across all equipment with a FANUC control going forward, from machining centers to electrical discharge machines to turning centers and more. The goal with this screen is to provide an intuitive interface that will help less-skilled operators become more capable across all the machines they work with, Mr. Bond says.
The iHMI software is also used in FANUC’s R-30iB Plus robot controller, which premiered at the Private Show. The control features a high-performance central processing unit to enable faster speeds, an upgraded camera interface with increased image transmission speed, and a new iPendant with enhanced screen resolution and processing capability. The icon-based iHMI enables setup and programming, and provides tutorials from the home page common to FANUC CNCs. The company says that first-time users can create a robot program for a simple handling task in just 30 minutes with this interface; as on the RoboDrill, the pendant software can be reverted to its previous version.
Bringing Testing Under One Roof
In addition to technical demonstrations and presentations, Private Show attendees were invited to tour several production facilities on the FANUC campus, including the previously mentioned robot and servomotor plants. Perhaps most impressive, however, was the newest facility, FANUC's Reliability Evaluation Building. Measuring 100 meters wide and 200 meters long, this is the largest facility in the company's laboratory area. Testing that was previously carried out at various laboratories with limited space has now been brought under this one roof.
Numerous tests are in progress testing the durability of spindle motors, robot reducers and even cabling. The goal of this "accelerated life testing" is to identify each component’s point of failure and use this to establish lifecycle ratings. The lab also includes a large anechoic chamber for testing the levels of electromagnetic waves emitted from FANUC products. This testing was previously outsourced, but can now be performed on FANUC's campus for a reduction in product development time.
Click through the slideshow above for a closer look at some of the technologies on display during the Private Show.
Parameters tell the CNC every little detail about the specific machine tool being used, and how all CNC features and functions are to be utilized.
This concept introduces the three basic modes of operation, presents examples of when they are used, explores more about the mode switch, and categorizes each position of the mode switch into one of the three basic modes.
For the most part, CNC controls will follow the instructions given in a program to the letter. With the exception of basic syntax (program formatting) mistakes, the CNC control will rarely be able to tell if a mistake has been made.