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• Wire winding is drum method
• The wire of a typical brass wire EDM machine is disposable, but the wire of this wire EDM machine is
Molybdenum electrode wire (200m) is wrapped around a drum and rotated and reversed repeatedly to extend the life of the wire.

・The wire of this wire discharge contour machine can repeat rotation and reversal for a long time
  and can be operated continuously.
  *Wire life varies depending on processing conditions.

・It uses molybdenum wire for excellent durability, and the monthly cost is approximately 800 JPY,
  making it excellent cost performance.

	STG molybdenum type	brass type
	Just because the wire travels at a high speed does not mean high-speed processing is possible.
There is no problem in practical use stepping motor drive However, maintenance is easy	very good servo motor drive
Using wire	Repeated use	Disposable
Wire material	Molybdenum	Brass
Wire diameter	Usually 0.18	Usually 0.25
To the workpiece hole Connecting wires	Manual (tricks required) Easy once you get used to it	Automatic/Manual (easy)
Wire length	About 200 meters	Thousands of M
Wire guide model	Guide wheel long life	Dice guide short life
Wire feed position accuracy	No problem for practical use (Because there is no dice guide)	Good
Wire breakage, etc.	Hard to break even when used roughly Less influence of cooling water Therefore, it is possible to process extremely thick workpieces	If not strictly managed, the wire will break
Wire tension	There is no special mechanism using tools when winding the wire around the drum	Control between supply roller and discharge roller Regular roller replacement required
Power supply block to wire	Carbon brush, cheap	Cemented carbide, expensive
Quality of machined surface	Wire reversal pattern appears	Beautiful
Pulse power supply	Voltage 48-100V Current 1-5A	Voltage approximately 300V Current 1-32A
Discharge interval/mm	0.01?0.03	0.01?0.12
Processing fluid	Dilute the vegetable emulsion with water Because the machining fluid contains oil, the life of the pulley bearings in the wire supply path is long.	Pure water (ion exchange resin)
Machining fluid conductivity	Use a conductivity meter	Adjusted by ion exchange resin
Processing fluid filter	Simple filter	Requires frequent replacement
Processing fluid supply	As long as the machining fluid is applied to the workpiece, a general low-pressure machining fluid pump is sufficient The piping is a low pressure hose There is only a manual cock, so the need for maintenance is low	High pressure machining fluid supply device required For conductivity adjustment and jet flow circuit Regular switching of solenoid valves, etc. Maintenance required
Maintenance	Easy Most parts can be replaced by the user	Difficult
Operating costs	Cheap, about 40 yen/hour	Expensive, about 300 yen/hour
Base price	cheap	High
	STG molybdenum formula	Brass style
Processing speed (mm2/min) per unit time Machining cross-sectional area	230	240
Processing accuracy/mm (Example) Octagonal test piece Inter-plane distance comparison	0.01?0.04	0.004?0.01
Surface roughness Ra/um	1.6?3.2	0.1?1.6
Wire consumption	Less wear throughout the wire	Wasted between the thickness of the workpiece Becomes thinner
NC control code	Basically, 3B code However, since it has a G code conversion function, Programming possible with G code	ISO G code
Machining figure program	Built-in CAD/CAM system Based on DXF text file Data can be exchanged with existing CAD	A separate CADCAM system may be required Many
Tapering	Possible, but not recommended	Possible