Re: Clausing 5914 - Test Report Requirements
- From: Joseph Gwinn <joegwinn@xxxxxxxxxxx>
- Date: Sat, 31 May 2008 11:34:13 -0400
In article <0D_%j.39327$dq6.2329@xxxxxxxxxxxxxxxxxxxxxxxxxxx>,
Wes <clutch@xxxxxxxxx> wrote:
Joseph Gwinn <joegwinn@xxxxxxxxxxx> wrote:
It turned out to be the "Clausing Test Report, 5900-series Lathe", a
one-page form that was filled out and provided to the purchaser of each
lathe. There are 15 tests listed. Most are for various kinds of
alignment and runout, and are all less than 0.001" both near the
headstock or tailstock as appropriate, and also at the end of a 12" bar
held in one or the other.
Could you scan that and email it to me?
Not easily at present (no scanner), but Clausing will fax it to you on
request. Their phone number is 574-533-0371.
I can also extract and summarize the relevant text. What's lost are the
little diagrams showing what is being measured, so I've added some
clarifying words.
1. Bed Level, transverse direction: all readings (across bed) to be
within 0.0005" in 12 inches.
2. Bed Level, longitudinal direction: Maximum reading along bed of
0.001" in 12 inches.
3. Spindle Center Runout: zero to 0.0008" total indicator runout, with
indicator resting on a dead center mounted in the spindle.
4. Spindle Nose Runout: 0 to 0.0003" on the spindle's L-00 taper.
5. Spindle Taper Runout: Total indicator runout in two places, right
at the spindle nose, and at the end of a 12" test bar: 0 to 0.0003" and
0 to 0.0006" respectively. The test bar appears to have a MT 4.5 taper
in one end, as there is no mention of using the MT3 spindle sleeve.
6. Headstock Alignment, vertical: Max height deviation at end of 12"
bar is 0 to +0.0005". Probably uses same test bar as test #5.
7. Tailstock Alignment, vertical: Max height deviation at end of 12"
bar with spindle fully extended is 0 to +0.0008". Test bar will need a
MT3 taper.
8. Headstock Alignment, horizontal: At the end of a 12" test bar, 0 to
+/- 0.0003".
9. Tailstock Spindle Alignment, horizontal: At the end of the fully
extended spindle, 0 to 0.0005", measured from the front of the lathe.
10. Tailstock Taper Alignment, horizontal: At the end of a 12" test
bar, 0 to +/- 0.0005". Spindle shown as fully retracted, and perhaps
it's clamped as well.
11. Tailstock Taper Alignment, vertical: High at the end of a 12" test
bar, 0 to +0.001". Spindle shown as fully retracted, and perhaps it's
clamped as well.
12. Cross Slide Alignment: This is a combined test. Apparently, one
first faces off (machines) the faceplate, and then does some indicator
tests. The faceplate is allowed to be concave only, and the deviation
from flat cannot exceed 0 to 0.0005" when the cross slide is moved,
scanning the indicator along a diameter. The runout due to rotation of
the faceplate also cannot exceed 0 to 0.0005".
13. Lathe Must Turn Round With Work Mounted in Chuck: Turn a test
piece, and measure diameter with a micrometer. No pair of measured
diameters can differ by more than 0.0003". Actually, it's possible to
pass this test and yet not be round. A better test is to turn
something, and then measure it between a V-block and a dial indicator.
But the multiple-diameters test will catch most of the irregular shapes
a lathe is likely to make.
14. Running test for smooth operation: The test specifies that the
lathe must be able to cut a 1.5" diameter bar of CRS with 5" protruding
from the 3-jaw chuck (and no tailstock use), running at "high speed"
while taking a 0.125" depth of cut (0.25" diameter reduction) and
feeding 0.0026" per turn, without chatter. High speed is not defined,
but surely precludes use of the back gear for this test.
15. Back Lash on Cross Feed Screw: 0.004" max.
Joe Gwinn
.
- References:
- Clausing 5914 - Test Report Requirements
- From: Joseph Gwinn
- Re: Clausing 5914 - Test Report Requirements
- From: Wes
- Clausing 5914 - Test Report Requirements
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