Wire EDM Machine Operation Chapter 12
Copyright November, 98 Page 12-5 Sodick Inc.
FLUSH NOZZLES:
There are 3 sizes of flush nozzles.
0 to 10° 6mm Lower (3081674) 6mm AWT Upper (3081604)
11° to 20° 10mm Lower (3081675) 10mm AWT Upper (3081606)
21° to 30° 12mm Lower (3081867) 12mm AWT Upper (3081868)
Dry run the machine and visually verify that the wire isn’t touching the nozzle. If it is, the
nozzles with a larger I.D. opening should be installed and verify again that the wire isn’t
touching the nozzle.
WIRE GUIDES:
Sodick provides a round tool for removing the screw on style guides. The tool (die driver)
has 2 lugs that fit into 2 slots ground on the guide. The hole drilled through the tool is to
put an allen wrench through to loosen and tighten the guide. Check guide size and
roundness with a comparator or a microscope when the accuracy of the parts your cutting
deteriorates. See page 1-2 for information about split guides.
LOWER WIRE ROLLER ASSEMBLY:
There is a white ceramic roller 2.75"O.D. located below the lower head with 2 ceramic
guides surrounding it. The wire travels around the roller and through the lower arm,
between the ejection rollers and drops in the wire bin. This roller must spin freely and
should not feel sloppy. This roller can affect how reliable the AWT unit is. Occasionally
a piece of wire will get lodged between the guides and the roller. That piece will jam the
roller and must be removed to allow the roller to spin freely. To remove the roller
assembly, loosen and remove the 2 screws located at the top of the right side of the steel
plate and pull the entire assembly toward the front of the machine and remove it. Remove
the guides and remove the piece of wire that is jammed and verify that the roller spins
freely. To attach the guides, use a .007" thick, . 5" wide and 12" long shim stock. Insert
the stock between the roller and the guides. Push the guides tight against the stock,
tighten the screws to secure the guides and remove the stock. NOTE: If the small rear
guide is closer to the roller than the larger guide, there will be a step that the wire will hit
when it comes around the roller. Verify that the roller spins freely now. To attach the
assembly to the lower arm, note the plastic tube sticking out of the lower arm. Push the
assembly onto the tube with the hole in the rear ceramic guide and tighten the 2 screws
that secure the steel plate. Verify that the AWT unit is reliable now.
WIRE EJECTION ROLLERS:
There is a set of wire ejection rollers located above the wire bin. These rollers pull the
wire from the spool, through the machine and drop it in the wire bin. The pressure
between these rollers affects how the wire lay’s in the bin. When the wire run is turned
on, if the wire is not laying flat in the bin, increase the pressure by turning the bolt
(located directly behind the rear roller) clockwise or decrease it by counterclockwise.
Wait several minutes between adjustments. This will allow you to read how the wire is
To Next Page
Loading...