Check list time:
What are you cutting, type of metal/plastic, diameter and length.
How is it chucked, 3 jaw, 4jaw, between centers or combination.
Type of cutter, hss, carbide, a u-grind or factory insert.
Speed setting, power or manual feed.
Chattering and cutting tapers are two totally different problems.
Which do you want to fix first.
Cutting tapers can indicate a warped bed or tailstock not set
properly depending on how you are holding the workpiece.
which way is the taper?
Chattering can be any number of problems, wrong/no cutting lube,
wrong feed rate, tool height set wrong, wrong type of tool, too fine a
cut, too agressive a cut, assorted gibs not adjusted properly, etc.
etc, etc.
Solidly mounting the lathe can cause tapered cuts as well if it warps
the lathe bed
Need lots more info on exactly what you are doing.
Bob
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On 9 Dec 2002, at 21:23, ntdefeo ntdefeo@... wrote:
After setting and checking my Homier 7X12 lathe 9 ways to sunday, I
am still turning tapers! As carriage is advancing towards the hs
assembly, the hs cutting tool starts to chatter, no matter what
adjustments are made. Is it possible that the bed it bowed/warped in
such a manner that this machine should just be returned for a new
unit? I have never run up against such a perplexing problem. All
adjustments have been checked and rechecked for accuracy. Unit is
solidly mounted on a bench. Has anyone else run across this problem?
Any comments? suggestions? short of heaving it into the trash?
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