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Posted on Sep 8, 2020
Each machine tool in a metal workshop has a function. The right tool for the job. For triaxial or 5-axis VMC vertical machining centers, their basic X, Y, and Z axis linear motion function can be enhanced by adding a rotary tilt table which can add rotary A and C axes motion for workpieces that fall outside the coordinate range Cartesian.
A machine that is designed for three-axis machining can, using a bolt-on accessory, achieve four- or five-axis performance at significantly lower costs compared to a purpose-built five-axis machining center. There are, however, some considerations that stores need to understand before switching from three- to five-axis machining.
Whenever the "cutting time" can be extended with a single operation while avoiding additional maintenance for repositioning, productivity and accuracy go up. The advantage of processing parts more completely with a single setup is an advantage that machining beyond traditional three-axes can enable.
For workpieces that have machined features that are not diametrically opposed, such as 90 degrees or 180 degrees, indexing or rotating the part blank on the fourth axis is almost necessary to access these features. The addition of the fifth axis capability expands the availability of components of a complex part through continuous motion or contour capabilities.
To learn more about things a three-axis milling shop needs to consider when adding a turntable to their VMC. Although his company produces turntables and tilting tables up to 1 meter in capacity, most of the smaller jobs use turntables from 4 to 8 inches in diameter.
These compact units are used by workshops dealing with a wide variety of complex parts used in medicine, automotive and aerospace as well as in many other industries. For workshops that are just starting to machine outside the three axes, These compact units can be mounted to the side of the VMC table, freeing the rest of the table for other work.
Think of it as the ability to perform on-demand machining in three or five axes. In some cases, these "bolt-on" assemblies can be transferred to other capable machines in the workshop, adding to their versatility.
By using only a portion of the machining center table for tilting / rotating work, the rest of the table can be positioned on ordinary three-axis workpieces. The decision for the shop is to choose parts based on the complexity that can best be machined using triaxial and machining techniques.
Hurco VMC works across the range, from the compact VM CNC VMC model to the five-axis VMX series machines, and for the largest aerospace parts - the DCX series of two-column machining centers with 2- and 3-meter X-axis. VMC from Hurco are used to manufacture parts for the automotive, aerospace, medical equipment, energy, injection tool and mold, transportation and electronics industries.
In its state-of-the-art CNC machining centers, Hurco offers dual-screen control for faster and easier machining. A data block search helps operators, for example, edit a part program to correct a part. Rather than searching through lines of code, the developer uses the graphical screen to select the part feature to edit, and the appropriate line of code appears on the second screen so changes can be made quickly.
Hurco's concurrent programming feature has been enhanced with two-screen control. While the machining center rotates one part, the operator can program another part without interrupting the machining cycle.
DXF Transfer allows the operator to import the CAD image, select the desired functions, and the WinMax CNC control automatically creates the program. The part program can be checked on screen with the Hurco Graphics Verification System, which includes three-dimensional toolpath rendering with dynamic rotation and real-time tool display so that the part can be viewed from any angle without being forced to re-draw it.
Hurco's latest controls and software are designed to streamline everything from optimizing cycle times to capturing tool information. UltiMotion cuts cycle times by up to 30 percent, which, according to Hurco, significantly improves surface finish quality.
UltiMonitor allows you to monitor the machine remotely from any web browser or you can view the control screen or video from a USB camera on the machine. The absolute tool length allows independent tool setting from the part and machine. As a result, the tool information only needs to be captured once, allowing the tool to be used in other machining centers, making it easier to use the offline tool preset. In addition, Tool Change Optimization analyzes the part program and automatically reduces the number of tool changes by changing the program for optimal performance.
:: Read more : Introduction to Vertical Machining or CNC VMC
The RoboDrill mimics the VMC's ability to perform milling, drilling, tapping, facing, pocketing and slotting. The familiar FANUC RoboDrill mimics a vertical machining center’s ability to perform milling, drilling, tapping, facing, pocketing and slotting—everything that a VMC can do.
The RoboDrill competes very well with the 20 x 30 ″ and 20 x 40 ″ VMCs and can do the same job as the 40 x 30 VMC 40 and do it 15-50% faster. Reasons include quick tool changes, quick spindle on and off, and high acceleration motors. Even though taper 40 can perform heavier roughing operations, the RoboDrill overcomes them in grooving, threading, drilling, pocket tapering, and circular interpolation. For roughing, RoboDrill is typically 15% faster; without roughing up to 20-40 percent higher.
Over 7,000 RoboDrills are installed in North America, about half of which are in work shops and half in specialist stores. Applications include high-speed machining of aluminum for aerospace parts, chromium, titanium and cobalt for medical and weapon parts, and general engineering.
BIG Plus spindle technology gives you The RoboDrill with its 30 C-shaped tapered frame provides a contact surface that allows you to make heavier, high-quality cuts and do it at lightning speed - something 40-tapered machines struggle to fit. For example, the RoboDrill is able to perform common mold and die or medical applications with a high speed ball end mill with feed rates of 200 ipm (50 m / min) or more due to its fast acceleration / deceleration speeds.
The RoboDrill is available in three sizes: short, medium and long bed with the latest FANUC 31i-B5 Nano CNC control. X / Y / Z travels in the short bed model are 300 x 300 x 300 mm; 500 x 400 x 330 mm in the medium model; and 700 x 400 x 330 mm in a long bed. The travel speed is 2,125 ipm (54 m / min) on all three models. BIG Plus spindles are 10,000 rpm and 24,000 rpm with 21-tool ATC.
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