Hyd-Mech H-18 ASV, Manual

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2.1
SECTION 2, OPERATING INSTRUCTIONS
This section has been prepared to give the operator the ability to set up the saw for most cutting situations. Before cutting
any material, the operator should be familiar with all operations and controls as well as the basic cutting theory described
below. The saw is equipped with a variable blade speed control and hydraulic feed control, as well as an extensive door
chart to guide the operator to the correct setting of these controls.
BLADE BASICS
Technology is rapidly changing all aspects of production machining. Metal cutoff is no exception. The advances made
in the bandsaw blade industry have definitely brought down the cost per cut, despite the three fold higher price of high
technology blades. Variable pitch, bi-metal blades (like the 4/6 or 3/4 bi-metal blade supplied with the machine) last much
longer, cut faster, and more accurately than conventional carbon steel blades. In order to take advantage of the superiority
of bi-metal blades, it is critical to properly “break-in” a new blade. This is accomplished by taking two or three cuts through
solid four or five inch diameter mild steel at an extremely slow feed rate. (It is also advisable to utilize a slow blade speed.)
These two or three slow cuts sufficiently lap (polish) the teeth on the new blade so that it does not snag the material being
cut. Proper break-in will alleviate blade vibration; improve surface finish, accuracy, and blade life.
After “break-in”, the following six points must be closely monitored to ensure long blade life:
1. Proper blade tension should be maintained. (See Section 3, Maintenance and Troubleshooting)
2. Generous coolant application is essential with most materials. A high quality and well mixed coolant will extend
blade life, and also increase cutting rate and quality. On those materials where coolant is undesirable for cutting,
a slight coolant flow or periodic oiling of the blade is necessary to prevent the blade from being scored by the
carbide guides.
3. The stock being cut must be securely clamped in the vises.
4. The proper feed force should be chosen. (see Saw Cutting Parameters: Step 2)
5. The proper blade speed must be selected. (see Saw Cutting parameters: Step 4)
6. The proper feed rate must be applied. (see Saw Cutting Parameters: Step 5)
VARIABLE SPEED CONTROL
Blade speed can be adjusted infinitely between 60 to 350 SFM (Surface Feet/Minute) (18 to 107m/min). Adjustment
should be made only when the blade is running. Clockwise rotation of the knob increases blade speed while counter
clockwise rotation decreases blade speed.
THE CONTROL PANEL
START-UP
The H-18/22 control console has been designed to simplify the operation of the saw, to give the operator
the ability to stop any function at any time, and to be able to control all the functions remotely. We can
not overstress the importance of familiarizing yourself with the controls of the H-18/22 prior to starting the
machine.
NOTE:
1. ALL SWITCHES MUST BE IN THE CENTER NEUTRAL POSITION TO START THE MACHINE!
2. WHEN STARTING THE MACHINE FOR THE FIRST TIME MAKE SURE THAT BLADE IS MOVING IN A COUN-
TERCLOCKWISE DIRECTION, AND THAT THE HYDRAULIC PRESSURE IS 1000 PSI (6890kP). IF THERE IS
NO IMMEDIATE PRESSURE, SHUT THE SAW DOWN AND CHANGE THE PHASE ORDER.
MANUAL OPERATION
Manual Operations can be performed when the PLC 100 controller is set to MAN (AUTO is active when a RED light is on
above the AUTO/MAN button). All functions are self-explanatory. Specific control button functions are described on the
following pages.