MV4800-ST Advance Type M800 Wire EDM

• Submerged machining to 31.9 inches in the all-new, stainless steel work tank with the newly designed self-cleaning stainless steel seal plate and seal-plate movement transfer mechanism.
• Automatic fluid–level control sets the DI fluid level to the correct height according to the Z-axis position.
• Auto–lock mechanism for machining tank door uses a unique, vertically moving, space-saving door designed by Mitsubishi. The door is engaged by the simple push of a button or by M-code for automation. It is also equipped with a safety switch that will not allow a tank fill with the door open or ajar.
• Fine-grain dianite casting material designed increases casting thickness and height to guarantee accuracy and repeatability.
• Moving column design allows greater workpiece weight capability and easier loading/unloading of workpieces up to 6600 lb.
• AC-Servo (Closed Loop) Torque Control Wire Tensioning System insures finer, more stable wire tensioning and increased part accuracy and consistency.
• Linear shaft motors provide a non-contact zero-wear drive system in the X and Y axes that insures highly accurate table movement with zero backlash.
• Linear motion guideways support X, Y and Z axes. The size, spacing and location of these ways promote stable operation throughout the entire machining range.
• Optical servo drive system uses all fiber optics between the control, servo amps and linear shaft motors for four times faster communications speed, improving response time to allow cutting accuracy and high–speed positioning.
• All-Axes Absolute Control System enables high–accuracy positioning without returning to the zero point after a power failure.
• Linear glass scales (2 millionths absolute scales) come as standard equipment on the X and Y axes.
• Thermal Buster thermal stability system directs chilled dielectric fluid to specific machine structure areas such as the Z-axis base, the lower arm and work tank, and the X and Y axis linear-shaft motors. U-V Taper Unit allows up to 15° per side taper cutting in a 14″ thick workpiece. 45º per side is possible in a 3.2” thickness with optional angle master guides and flush cups.
• Angle master function provides a higher degree of taper accuracy by better matching the true bend point of the wire to the guide point in larger taper angles.
• Three-sided, three-piece hardened work table with mid-hardness stainless steel  designed to resist scratching and daily wear. This also increases toughness so the 8mm tapped holes can resist damage from over torqueing of clamps or tooling.  A full-length back table rail bridges the ends of the side tables.
• Automatic wire alignment is made possible by a highly accurate wire alignment unit that mounts to the machine table and electronically shifts the U and V axes to make the wire perpendicular to the machine table.
• Wire main tensioning system is designed to both apply breaking force to tension the wire as well as become the drive motor to push the wire through the system for automatic threading. TS Master is a DC motor-operated tensioning system that automatically suppresses tension fluctuation reducing possible wire lines on the machined surface.
• Main tension roller is designed with index and flip capability to provide four separate traction surfaces to reduce operating costs.
• Large-diameter selection rollers improve the smooth operation of pulling the wire through the machine while providing multiple index locations to greatly reduce operational costs.
• Round diamond wire guides are used to provide the best accuracy for both straight and taper cutting applications.
• Automatic threading (AT) provides reliable threading through the unique solid round diamond guides, creating a highly reliable unit completely programmable from user screen or within the part program.
• AT Unit with quick retry function is highly reliable with wire sizes from .008″ to .012″ in either plain brass or with some coated high-speed wires (.010″ standard).
• Fine–hole insert allows the AT unit to insert wire into start holes as small as .020″. Parameter adjustments can be made to prevent the wire from being inserted into a nearby hole.
• Submerged threading and insert at break point is possible up to 32-inches thick when using the wire-annealing feature that can be programmed from user screen or within the part program.
• Contact release allows the machine to break contact between the wire and workpiece after insertion and reposition to an area where the EDM process can begin.
• New automatic AT maintenance pages are set by the operator for total maintenance intervals. Complete maintenance instructions pop up on-screen when that value has been reached.
• Upper and lower power feeds can be indexed up to 48 times each.
• Location of the wire tip is displayed in a real–time, on–screen graphic when the wire is inserted.
• Automatically adjusts power settings when cutting materials with impurities or materials with high amounts of inherent stress, minimizing any repeated wire breakage problems.
• Rough and skim cutting can be performed with one simple unmodified program.
• Ultra-fast fill and drain allows faster hole–to–hole threading cycle times.
• 10KG (22 lb.) wire spool standard allows up to 40 hours of unattended machining time.
• 25KG (55 lb.) wire spool standard is built into the back corner of the machine and allows up to 100 hours of unattended machining time.

Mitsubishi CNC Control 

• 19” LCD touch panel
• Windows 8  operating system and a CFAST Compact Flash Card for highest performance. A 1GB partition has been allocated for user program storage.
• Program Input Methods Keyboard, USB Flash Memory and Ethernet with FTP standard.
• 2D–CAM programming allows for DXF and IGES CAD files that can be imported directly for conversion to NC programs.
• Dual HMI users can switch between the new control and previous-generation control.
• Onboard programming macros can reduce program operation time by 88 percent.
• Machine restart suspends the current program, allowing the operator to start another job.
• Check List function allows a specific process or set of conditions to be followed before the machine will start. Ideal for aerospace and medical processes.
• Fully Automatic Rough Machining Control covers approach control (EM), corner control (CM-R), and power control (PM) to manage the complete rough cut with a few simple operator inputs.
• Corner Master Control now provides three levels of control to increase corner precision during both the rough cut and skim cut processes. CM-R uses an accuracy slide bar so the operator can select improved rough cut accuracy while sacrificing some speed. CM-S provides anti-short circuit control at small corners while balancing accuracy and machining speed. CM-S2 uses its own dedicated screen to allow fine adjustments in corner detail to provide our highest degree of corner accuracy.
• Entrance Master Control reduces the small dimple created by the approach line on die shapes, providing higher accuracy while reducing secondary handwork.
• Advanced pendant control automatic alignment and pick-up routines (built into the control) and “walk around” significantly reduces workpiece set-up time.
• Quick Response Servo System eliminates machine stoppage due to short circuit. During a short circuit condition, the machining energy is reduced and the wire is “backtracked” along the wire path at 10 times the machining speed.
• High-speed positioning and graphical part plotting increase efficiency.
• Mitsubishi M800 multi-tasking control allows complete graphic program checking of the next job while the current job is in progress.
• Edge positioning provides new edge and center pickup modes for the ultimate in workpiece positioning.
• Consumables management allows the operator to set estimated life cycles for each consumable and then displays the status on the control screen.

Power Supply

• V350 Type V Anti-Electrolysis Power Supply and DMX-S (Digital Matrix Control Sensor) shape each spark to improve finish, reduce vibration and minimize electrode wear. This reduced wear allows up to a 60 percent reduction in wire consumption.
• AE II processing, full anti-electrolysis protection from the rough cut through the finish skim cuts reduces hardness loss and invisible cracking throughout the part surface.
• The AE II Power Supply helps eliminate electrolytic deterioration and corrosion and increases carbide punch/die life by reducing the depletion of the cobalt binder; Reduces polishing required in molds to remove the effects
  of electrolytic corrosion created with standard EDM processing; Helps prevent iron-based materials from rusting; Helps prevent titanium and aluminum alloys from oxidizing; Increases DI resin life up to 300 percent.
• SL Control is a newly developed finish control system that greatly reduces lines or fine steps in varying thicknesses while improving part straightness. SL also improves the outside sharp corner accuracy to one third that of previous models.
• MP Circuit is a newly developed fine–pulse control technology that allows more precise discharge energy resulting in shorter machining times, particularly with fine wire sizes.
• RL Circuit is a newly developed, high-voltage, high-off-time, fine-pulse control technology that allows more precise discharge energy and improves machining of low-conductivity materials such as PCD, CBN and graphite.
• HL Circuit is designed to be used when tall–part straightness is of absolute priority.
• Adaptive control uses the DMX-S (Digital Matrix Sensor) to protect against wire breaks, accuracy losses and finish disruptions.
• PI Circuit uses a voltage modulation-type power source for edge pick-up or wire squaring with no damage to the workpiece, wet or dry.

Additional Benefits

• Full two-year warranty with Triple Diamond Partnership Program
• Cylindrical drive system is covered by a special 10-year positioning warranty
• remote360-enabled (remote user monitoring, diagnostics, service support and more)
• Comes with one complimentary preventative maintenance visit—to be used by the end of first year