MV Series Wire EDMs

March 12, 2012

MC Machinery Systems Inc. introduces its newest wire EDM technology, the MV Series. The new line features design and engineering improvements to exceed all other wire EDM machines on the market, including: non-contact cylindrical drive technology, an improved power supply, auto-threading, deeper submerged-wire threading capabilities, and more.

The new cylindrical drive technology offers a simple yet intelligent design concept using a linear shaft motor. Other EDMs built on a linear system are a flat-plate design, which limits the effective magnetic flux to only half of its potential. Mitsubishi's round magnetic shaft creates a non-contact design using the full 360 degrees of magnetic flux. This design delivers no wear, no cogging (inherent in flat plate systems), and no backlash for better energy-efficiency, accuracy, and speed.

The MV Series is built on the latest technology in machine construction; with a one-piece T-shaped base casting, the X and Y axis ways and drives are directly mounted, providing a highly rigid and thermally stable platform, driving the table and column independently. This style of direct-axis mounting removes all squareness and accuracy issues that come with a stacked table design, providing higher rigidity and smoother movement for more reliable, precise cutting.

A new servo control system uses a fiber-optic drive system with four times the communication speed for improved reaction time and accuracy. The Digital Matrix Sensor and V350 type-V generator specifically shapes the pulse to minimize electrode wear and decrease wire vibration, decreasing wire consumption while maintaining quality and straightness of the cut. Tests show up to a 60 percent reduction in wire consumption and 40 percent lower operating costs.

A redesigned auto-threader concept delivers improved threading capabilities, with upper rollers that travel with the Z-axis, creating a constant distance to the upper guide. This allows for nearly 14 inches of annealed wire length, reducing the wire curl ratio, and improving threading reliability on tall parts and submerged rethreading through the gap in case of a wire break.

The new head design features a flat-plate power feeder using an exclusive lever lock system, making it easier to index during operation. Without the need to open doors to rotate the carbides or realign wire, shops can realize significant time savings.

The series incorporates several design improvements to reduce overall operation cost. These include less expensive power feed design, larger wire drive rollers with more useable surface, reduced electrode wear for lower wire cost, optical drive plus LSM for reduced electrical consumption, and Sleep Mode function, which turns pumps off at night and restarts them in the morning to save energy and still have the machine thermally ready for operation.

Related Glossary Terms

  • backlash


    Reaction in dynamic motion systems where potential energy that was created while the object was in motion is released when the object stops. Release of this potential energy or inertia causes the device to quickly snap backward relative to the last direction of motion. Backlash can cause a system’s final resting position to be different from what was intended and from where the control system intended to stop the device.

  • electrical-discharge machining ( EDM)

    electrical-discharge machining ( EDM)

    Process that vaporizes conductive materials by controlled application of pulsed electrical current that flows between a workpiece and electrode (tool) in a dielectric fluid. Permits machining shapes to tight accuracies without the internal stresses conventional machining often generates. Useful in diemaking.

  • feed


    Rate of change of position of the tool as a whole, relative to the workpiece while cutting.

  • flat ( screw flat)

    flat ( screw flat)

    Flat surface machined into the shank of a cutting tool for enhanced holding of the tool.

  • threading


    Process of both external (e.g., thread milling) and internal (e.g., tapping, thread milling) cutting, turning and rolling of threads into particular material. Standardized specifications are available to determine the desired results of the threading process. Numerous thread-series designations are written for specific applications. Threading often is performed on a lathe. Specifications such as thread height are critical in determining the strength of the threads. The material used is taken into consideration in determining the expected results of any particular application for that threaded piece. In external threading, a calculated depth is required as well as a particular angle to the cut. To perform internal threading, the exact diameter to bore the hole is critical before threading. The threads are distinguished from one another by the amount of tolerance and/or allowance that is specified. See turning.

  • wire EDM

    wire EDM

    Process similar to ram electrical-discharge machining except a small-diameter copper or brass wire is used as a traveling electrode. Usually used in conjunction with a CNC and only works when a part is to be cut completely through. A common analogy is wire electrical-discharge machining is like an ultraprecise, electrical, contour-sawing operation.