Rottler SG10A, Operation And Maintenance Manual

Page: 85 / 124

Section 7 Troubleshooting SG10A Manual
www.rottlermfg.com
7-3
Problem Possible Cause Solution
Eccentricity Problems
when Cutting Three
Angle Seats
Machine is not level Level machine per instructions in
Installation section of this manual
Workhead is not floating
smoothly
Be sure that the work head and main
base are clean and floating smoothly
side by side and front to back
Spindle floated to improper
center location
Reposition workhead to ensure proper
alignment
Improper setup procedure The centering switch that is located on
the left side of the front panel needs
to be on the centering position at the
time of centering and machining the
vale seat. The Spherical pneumatic
switch needs to be on the OFF position
and the pilot into the valve guide until
reach the proper height or the cutting
insert is a few thousands from the
valve seat face. Let Workhead flow
for few seconds to achieve maximum
alignment over the pilot. Be sure
there’s no contact with the Workhead
to allow spindle to stabilize and Cutter
to center itself on the valve guide.
Release Foot Pedal.
Note: Spherical Pneumatic switch
should be on the OFF position all the
time that you are machining the valve
seat; this will give you a positive live
centering.
Toolholder cone dirty The toolholder cone must be clean
before is attached to the spindle and
also be sure that the inner spindle
cone is clean
Excessive pressure when cutting
seat
Use less pressure when cutting the
seat
Incorrect spindle speed Adjust spindle speed
Worn or improperly selected pilot Check pilot for wear and straightness
Dull or damaged cutter insert
Replace insert
Incorrect pilot selection Follow directions in manual for
selecting pilots
Worn tool holder Check tool holder with bore gauge to
determine if there wear
Worn valve guide Service valve guides before attempting
to cut valve seats