Benefit A. Saving production time (Max
cutting speed: ***0mm2/min)
Benefit B. Saving tool cost (the electrode is
cheaper: around 1.2USD/pcs)
Benefit C. Saving material cost (the cutting
gap is smaller: 1.**2mm)
I.The machine
characteristics:
(1)The machine utilizing anodic machining
principle, cutting special steel that cant be easily cut, such as
high-temperature heat-resistant alloys, high chromium, high
nickel alloy, titanium alloy. It can also cut steel
rail.
(2)The
cutting efficiency is high, the maximum cutting speed is
***0mm2/min
(3)Use
steel as the electrode, the cost is rather
lower
(4)Cutting gap, ≤2mm, save precious
steel
II. Specification
Model
No.
EDS**0
EDS**0
EDS***0
Max. cutting
diameter
φ**0mm
φ**0 mm
φ***0 mm
Max. workpiece
width
**0mm
***0mm
***0mm
Max. cutting
travel
**0mm
**0mm
***0mm
Max. cutting
length
Unlimited
Unlimited
**0mm
Worktable
dimensions
**0x***0mm
***0x**0mm
***0x***0mm
Worktable
moving travel
**0mm
**0mm
**0mm
Max cutting
speed
***0mm2/min
***0mm2/min
***0mm2/min
Max. worktable
load
***0kg
***0kg
****0kg
Electrode
size
0.7?1.2(thickness)x****0(W)x***0(L)
0.7~1.2(thickness)x****0(W)x***0?L?
0.7~1.2(thickness)x****0(W)x***0?L?
Cutting
gap
≤2mm
≤2mm
≤2mm
Electrode
Material
Steel
steel
steel
Max. output
current
**0A
**0A
***0A
Controller
German Siemens
German Siemens
German Siemens
Feeding
motor
Japan Panasonic AC servo
motor
Japan Panasonic AC servo
motor
Japan Panasonic AC servo
motor
III.
Introdution of Electrical Discharge Sawing
machine.
1?Working
theory
The machine utilizing anodic machining
principle, cutting special steel that cant be easily cut, such as
high-temperature heat-resistant alloys, high chromium, high
nickel alloy, titanium alloy. And the electrode is the mild
steel, which is running fast on the pulleys.
The work
piece is positioned on the worktable. And the mild steel
electrode connects with the plus end of the power supply. And the
work piece to the minus end of the electrical power supply. There
is a flushing device which can supply sodium silicate solution
(the coolant) to the cutting area. The electrical discharging
happens continually between the mild steel and the work piece
according to the drawing.
2?Simple
description
The
machine is equipped with the main machine body, working liquid
system and controller.
1) The
main machine body
The
machine is gantry structure which is made up with the worktable
parts, moving crossbeam and upright column the motorized
electrode, etc.
? Worktable
The
worktable is used for holding and adjusting the work piece. The
worktable moves from point to point or continually, derived by
the motor and couple and ball screw on the V guide way of the
machine body.
? Device of
running the belt type steel electrode.
This
device has functions of running& guiding and controlling the
tension of the belt type electrode steel and also the function of
higher power supply feeding, and checking and protection of
belt-breaking.
The belt
type steel electrode is running on the driving pulley and slave
drive ones which are installed on the both holders of two ends of
the crossbeam.
The
driving pulley is moved by the 3 phases motor and the slave drive
pulley by hydraulic pressure. The belt type steel electrode is
guided with two guiders in order to make sure the electrode is
under good tension condition. And the belt type steel electrode
tension can be adjusted by the hydraulic pressure. In case the
belt type electrode breaks or the tension is weak, the alarm will
appear at once and the machine will stop working too. The power
supply feeds through the pulley, installed with the power feed
brush, pulley axle and to the belt type steel
electrode.
The
steel belt electrode is held by four sets of guiders in order to
make the electrode running in the same surface of the work piece
cross section and make the cutting gap as small as
possible. There are flushing mouths on the guiders, which
offer the working liquid to the cutting area.
? Upright column
and device of the motorized belt type steel
electrode. The device of the motorized belt type steel
electrode is moved by the A/C servo motor which drives the gear
reducing mechanism with ball screw. So the belt type steel
electrode can move to/away the work piece. The
upright columns are installed the linear guide ways, which hold
the device of the motorized belt type steel electrode. In order
to make the device move flexibly and reduce the loading of the
servo motor, there are the weight balance parts connected with
the device of the steel electrode by a roller chain inside of the
upright columns.
The
limited switches are installed on the device of the motorized
electrode. And there is a traveling ruler near to the device for
the operator to check the travel during
working.
2?The system of
working liquid
The
working liquid is taken to the flushing mouths by pump. And then
it flushes to the work piece by the adjustable mouths and return
to the collecting tank. The liquid after filter can be used
repeatedly.
The
supplier will supply the way how to mix the working liquid and
the installation floor plan. And the end user designs and builds
the liquid tank and the collecting liquid path according to the
floor plan and also the workshop area.
3?Electrical power
supply and control
?machining electrical
power supply
The
machine applies the special linear transform to exchange the 3
phases A/C electrical power into the lower voltage and high
current working power supply.
Main
specification of the power supply:
Input?3
Phases **0V *0Hz
Output?*2V?*0V divided into adjustable 4
levels.
Max
machining current?**0A/**0A/***0A subject to different
models.
?Controller
system
The
machine applies the programmable PLC to control the running of
all kinds of functions stable. The power units are 3 phases asynchronous
motors expect the Panasonic A/C motor that drives the device of
the belt type steel electrode. All motors return circuits are
installed with the protecting switches to avoid the
overloading. The
system of the auto feeding steel electrode can inspect the
discharging gap in real time, and it will adjust the feeding
speed automatically according to the working situation in order
to make the cutting under the stable and efficient
condition.
