Hi All
Can anyone help shed some light on this problem?
Aussie link
China link
Background Info
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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.
- REVS/MM
- REVS/INCH
- THREADS METRIC PITCHES MM
- THREADS IMPERIAL PITCHES 1/INCH
- 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