Ⅰ. The machines characteristics :

█ Make features of big taper, considerable thickness, high efficiency, high precision and new structure etc, lead this industry

█ There are computer, machine electric and pulse power supply all in the controller

█ Main computer has two kinds of types—single board computer and microcomputer

█ Double CPUs structure in microcomputer, program and control at the same time

█ Good rigidity, running placidly, strong function, convenient and reliable operation

█ The whole closed machine bed, working table with T shaped groove, pane fixture

█ Suitable to process conductive metal moulds, complex metal parts and templates with high precision, high toughness and difficult processing

█ Can cut plane, bevel, top and bottom different shaped surface, greatly expand the processing range;

█ According to users’ request, add half closed-loop, transducer control system

Ⅱ. Main performance indexes and technical requirements

1. Software basic functions:

(1) Coordinate system: absolute coordinate, incremental coordinate (relative coordinate);

(2) Functions of coordinate transforming, zooming in and zooming out, rotating and tracking display in real time;

(3) Functions of interpolation of straight line and circular arc;

(4) Function of taper processing

(5) Function of processing different top and bottom shape;

(6) Functions of short circuit and wire-break handling;

(7) Functions of memorizing when power was cut and auto-stop after processing;

(8) Functions of auto-edge position and auto-centering

(9) Function of auto-adding transitional arc (Arbitrary angle);

(10)Function of processing backward;

(11) Functions of menu technology and auto-programming;

(12) Data transmission.

2. CNC system configuration and technical performances:

（1）CNC hardware:

(A) Homemade PC: upwards P2;

(B) 128MB RAM;

(C) 20GB hard disk;

(D) 1.44 diskette drive;

(E) 15″SVGA color display;

(F) RS 232 interface and mouse;

（2）CNC software and operating platform:

(A) CNC software comprises the automatic programming system;

(B) The operating platform is DOS 6.22.

（3）CNC system technical performance:

(A) CNC 4 axes control

(B) Taper processing (different shape processing);

（4）CNC system working environment:

(A) Temperature: 5～40℃

(B) Relative humidity: 40%～80%

Ⅲ . Parameters:

1.Technical parameters

Item		Unit	DK7725A	DK7725B	DK7725C
Worktable size (L×W)		mm	525×380	525×380	525×380
Table travel(X×Y)		mm	250×320	250×320	250×320
Max. workpiece thickness		mm	300	500	300
Max. taper angle /plate thickness		degree/mm	0°	0°	±3°/100
Max. machining speed		mm²/min	120	120	120
Precision	Octagon	mm	≤0.015	≤0.015	≤0.015
	taper	mm		≤0.04	≤0.04
Max. working current		A	6	6	6
Roughness		μm	≤2.5	≤2.5	≤2.5
Wire diameter		mm	Ф0.15~Ф0.2	Ф0.15~Ф0.2	Ф0.15~Ф0.2
Wire travelling speed		m/min	5 or 8	5 or 8	5 or 8
Load of table		Kg	300	300	300
Working solution			Saponification　Liquid
Working reservoir capacity		L	56	56	56
Power supply			3N-380V/50Hz	3N-380V/50Hz	3N-380V/50Hz
Power consumption		KVA	2	2	2
Wire guide frame			Can be adjusted
Machine dimensions(L×W×H)		mm	1350×910×1550	1350×910×1750	1350×910×1550
Package dimensions (L×W×H)		mm	1650×1210×2000	1650×1210×2100	1650×1210×2000
Machine weight		Kg	1600	1600	1600
Controller type			XKG-2002 XKG-2000 XKG-BM51	XKG-2002 XKG-2000 XKG-BM51	XKG-2002 XKG-2000 XKG-BM51

Item		Unit	DK7725D	DK7725G	DK7725H
Worktable size (L×W)		mm	525×380	525×380	525×380
Table travel(X×Y)		mm	250×320	250×320	250×320
Max. workpiece thickness		mm	500	300	500
Max. taper angle /plate thickness		degree/mm	±3°/100	±3°/100	±3°/100
Max. machining speed		mm²/min	120	120	120
Precision	Octagon	≤0.015	≤0.015	≤0.015	mm
	taper	≤0.1	≤0.04	≤0.04	mm
Max. working current		A	6	6	6
Roughness		μm	≤2.5	≤2.5	≤2.5
Wire diameter		mm	Ф0.15~Ф0.2	Ф0.15~Ф0.2	Ф0.15~Ф0.2
Wire travelling speed		m/sec	5 or 8	5 or 8	5 or 8
Load of table		Kg	300	300	300
Working solution			Saponification　Liquid
Working reservoir capacity		L	56	56	56
Power supply			3N-380V/50Hz	3N-380V/50Hz	3N-380V/50Hz
Power consumption		KVA	2	2	2
Wire guide frame			Can be adjusted
Machine dimensions(L×W×H)		mm	1350×910×1750	1350×910×1550	1350×910×1750
Package dimensions (L×W×H)		mm	1650×1210×2100	1650×1210×2000	1650×1210×2100
Machine weight		Kg	1600	1600	1600
Controller type			XKG-2002 XKG-2000 XKG-BM51	XKG-2002 XKG-2000	XKG-2002 XKG-2000

2.Machine precision (according to the standard GB 7926-87)

Item\Model	DK7725
Movement vector of X, Y axes	0.005mm
Movement vector of U, V axes	0.01mm
Positioning precision of X axis	≤0.015mm
Repetitive positioning precision of X axis	0.002mm
Positioning precision of Y axis	≤0.015mm
Repetitive positioning precision of Y axis	0.002mm
Positioning precision of U, V axes	≤0.025mm
Repetitive positioning precision of U, V axes	≤0.01mm
Perpendicularity of the wire to the working table	≤0.01mm
Radial jumpiness of wire winding drum	≤0.03mm