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Posted by DazFNQ on June 16, 2008, 1:37 am
Please log in for more thread options
Hi All
Can anyone help shed some light on this problem?
Aussie link http://www.machineryhouse.com.au/Products?stockCode=L183#
Hare & Forbes Lathe code=L183
China link
http://cnchinadragon.manufacturer.globalsources.com/si/6008824961265/pdtl/Lathe-machine/1003665583/Lathe-Machine.htm
Shenzen CQ6230B
http://www.metalworking.com/dropbox/Shenzhen_CQ6230B_Lathe.JPG
dropbox link
Background Info
---------------------
Leadscrew = metric 3mm pitch
Change gears 1 Set: M=1.25 (pitch) Z=22T, 44T, 26T, 52T, 38T
Lathe: Shenzhen CQ6230B
FWIW the chinese manual that comes with the lathe is poor reading, sure that
are not designed to teach but they must convey a clear message/instuction
when referencing any information therein.
Down the left side of the lathe (headstock gearchange cover) there are 5
tables of information.
1. REVS/MM
2. REVS/INCH
3. THREADS METRIC PITCHES MM
4. THREADS IMPERIAL PITCHES 1/INCH
5. INDICATOR TABLE
Q1. In the top most table (revs/mm)
Under the column titled "position"
Third column from the left, there are two symbols (one demonstrating
horizontal, one demonstrating vertical)
horizontal ----^VW^---
vertical
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>
<
|
What is their meaning (are they important, or can they be ignored)?
Q2. In the third table (THREADS IMPERIAL PITCHES 1/inch)
Under the column titled "position"
Second column from the left, there is the letter Z (directly underneath are
MII and MI)
Any clue as to what the letter Z means?
(I did find in the chinese manual that one of the change gears was referred
to as "Z=22T" as in a 22 teeth gear)
Are they trying to tell me that the 22 teeth gear is also known as the Z
gear?
Q3. In the third table (THREADS IMPERIAL PITCHES 1/inch)
Under the column titled "position"
First column from the left, (you may need to zoom in)
There is a small image on the table face where the image shows in part
48T (being on top)
(no in between gears)
Z ( being below it, is this referring to the Z gear ie: 22Teeth?)
Q4. In the third table (THREADS IMPERIAL PITCHES 1/inch)
Under the column titled "position"
Second column from the left,
If I wanted to produce a 24tpi thread, should I be selecting the levers A
and 3 with 48T on the top change gear and 22T gear on the bottom?
Thanks DazFNQ
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Posted by Karl Townsend on June 16, 2008, 7:29 am
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> What is their meaning (are they important, or can they be ignored)?
...
> Are they trying to tell me that the 22 teeth gear is also known as the Z
> gear?
...
Chinglish dictionaries are hard to find. I don't think you can get much help
from anybody.
> If I wanted to produce a 24tpi thread, should I be selecting the levers A
> and 3 with 48T on the top change gear and 22T gear on the bottom?
Sounds right, give it a try; see what thread lead you get.
Have fun learning to run your new toy.
FWIW, I have a SuperMax manual written in chinglish on a mchine I just got.
Using it to figure out the maintenance lube schedule and points to lube was
a REAL treat.
Karl
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Posted by Ned Simmons on June 19, 2008, 11:44 pm
Please log in for more thread options On Mon, 16 Jun 2008 06:29:41 -0500, "Karl Townsend"
>
>
>FWIW, I have a SuperMax manual written in chinglish on a mchine I just got.
>Using it to figure out the maintenance lube schedule and points to lube was
>a REAL treat.
Does you Supermax have Turcited rectangular ways? If it does, what's
an appropriate bribe for a copy of the instructions on adjusting the
gibs? Not how to make the adjustments, but how to tell when they're
properly adjusted. The combination of 3(?) gibs per axis (as opposed
to one gib for dovetail ways), and the low coefficient of friction of
the Turcite, makes it difficult to tell the difference between too
tight and too loose.
--
Ned Simmons
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Posted by DazFNQ on June 16, 2008, 8:09 am
Please log in for more thread options Ha It gets better, in the Hare & Forbes brochure it says theat the leadscrew
is metric, but another source of information for the same lathe says that it
is an imperial leadscrew.
Have discovered that its pitch is 3mm and it has 8tpi (butress thread)
I'll just keep digging.
> Hi All
>
> Can anyone help shed some light on this problem?
>
>
> Aussie link http://www.machineryhouse.com.au/Products?stockCode=L183#
> Hare & Forbes Lathe code=L183
>
> China link
>
http://cnchinadragon.manufacturer.globalsources.com/si/6008824961265/pdtl/Lathe-machine/1003665583/Lathe-Machine.htm
> Shenzen CQ6230B
>
> http://www.metalworking.com/dropbox/Shenzhen_CQ6230B_Lathe.JPG
> dropbox link
>
> Background Info
> ---------------------
>
> Leadscrew = metric 3mm pitch
>
> Change gears 1 Set: M=1.25 (pitch) Z=22T, 44T, 26T, 52T, 38T
>
> Lathe: Shenzhen CQ6230B
>
> FWIW the chinese manual that comes with the lathe is poor reading, sure
> that are not designed to teach but they must convey a clear
> message/instuction when referencing any information therein.
>
>
> Down the left side of the lathe (headstock gearchange cover) there are 5
> tables of information.
>
> 1. REVS/MM
> 2. REVS/INCH
> 3. THREADS METRIC PITCHES MM
> 4. THREADS IMPERIAL PITCHES 1/INCH
> 5. INDICATOR TABLE
>
>
> Q1. In the top most table (revs/mm)
> Under the column titled "position"
> Third column from the left, there are two symbols (one demonstrating
> horizontal, one demonstrating vertical)
>
> horizontal ----^VW^---
> vertical
> |
>>
> <
> |
>
> What is their meaning (are they important, or can they be ignored)?
>
>
> Q2. In the third table (THREADS IMPERIAL PITCHES 1/inch)
> Under the column titled "position"
> Second column from the left, there is the letter Z (directly underneath
> are MII and MI)
> Any clue as to what the letter Z means?
> (I did find in the chinese manual that one of the change gears was
> referred to as "Z=22T" as in a 22 teeth gear)
>
> Are they trying to tell me that the 22 teeth gear is also known as the Z
> gear?
>
>
>
> Q3. In the third table (THREADS IMPERIAL PITCHES 1/inch)
> Under the column titled "position"
> First column from the left, (you may need to zoom in)
>
> There is a small image on the table face where the image shows in part
>
> 48T (being on top)
>
> (no in between gears)
>
> Z ( being below it, is this referring to the Z gear ie: 22Teeth?)
>
>
> Q4. In the third table (THREADS IMPERIAL PITCHES 1/inch)
> Under the column titled "position"
> Second column from the left,
>
> If I wanted to produce a 24tpi thread, should I be selecting the levers A
> and 3 with 48T on the top change gear and 22T gear on the bottom?
>
> Thanks DazFNQ
>
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Posted by Joseph Gwinn on June 16, 2008, 9:25 am
Please log in for more thread options
> Ha It gets better, in the Hare & Forbes brochure it says theat the leadscrew
> is metric, but another source of information for the same lathe says that it
> is an imperial leadscrew.
>
> Have discovered that its pitch is 3mm and it has 8tpi (butress thread)
Can't be both. 8 tpi is (1/8)(25.4)= 3.175 mm pitch, not 3.000 mm pitch.
It's close enough that a thread pitch gage may have difficulty
distinguishing unless one takes the leadscrew off the lathe.
A better way to measure in place is with a dial indicator stuck to the
bed indicating horizontal travel of the carriage with half-nut engaged
while manually turning the leadscrew and counting turns.
Joe Gwinn
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