Here is a list of all the postings jacques maurel has made in our forums. Click on a thread name to jump to the thread.
|Thread: Gear spec for threading dial|
Be careful as the number of divisions must be a submultiple of the number of teeth!
Note: the number of divisions on the disc must be a submultiple of the number of teeth.
20 teeth is possible with 4 divisions (5 teeth between divisions so 30mm) for the pitches submultiple of 30mm. 6 divisions for 30 teeth. The number of teeth (20 or 30) is determined by the TDI braket position.
20 teeth with 5 divisions for pitches sub of 24 (12, 8 and 4mm)
21 teeth is possible with 3 divisions (7 teeth between divisions so 42mm) for the pitches submultiple of 42. 6 divisions for 42 teeth.
22 teeth with 2 divisions for pitches sub of 66.
26 teeth with 2 divisions for pitches sub of 78.
I've written an article on the subject for ME but it's not yet published.
you can use a module 2 mm. 30 teeth for pitches submultiple of 10mm (5, 2.5, 1.25, 0.5mm); 42 teeth for pitches submultiple of 7 (3.5, 1.75).
|Thread: Gear Measuring|
As the sun gear is 10 teeth, there is certainly a positive addendum modification, and certainly also for the planet gears, These gears must so be cut with a generation machine, or a special drawing made for a fly cutter.
|Thread: Upside down reverse threading|
look at my video:
|Thread: L.A.Van Royen Twist Drills and their Grinding|
You can read my articles in MEW about drill sharpening (the Van Royen is discribed as conical clearance). Issues N° 245, 246, 247. Issue 251 for small drills, and issue 256 for web spitting. I'm still working on the subject for further articles.
|Thread: Snap rings for the new year|
Best engineering wishes for 2019 with the help of some snap rings!
|Thread: Cutting a keyway without a broach|
This process was also described in "post bag" in the january 2004 issue of ME.
|Thread: Knurling Tools|
Have a look at the article "machining shiny knurls" ME issues 4543 & 4545 (sept and oct 2016)
|Thread: collet wishes|
Happy new year and best wishes with the ER25 collet set!
|Thread: Ball Bearing Speed Reducer|
Now a mulltipliying spindle using the same mechanism.
Here is a blue print copy of a 1981 exam for driving a potentiometer.
|Thread: Machining Tungsten|
The DENAL density is 17.5 (19.3 for pure tungsten). The copper/tungsten alloy (used for EDM electrodes) density is only 14.
Surch for DENAL on the web it's an alloy 93% tungsten with iron nickel and cobalt I used it for making boring bars (for low vibration) it's machinable while tungsten is not, but you must use TC taps (I killed HSS ones in this stuff).
|Thread: Involute Gear : Pressure Angle|
What is fondamental for involute gears is the « base circle » . Visit my website: **LINK**
|Thread: Unusual adjustable spanner|
Look at this book:
|Thread: Parting off alluminium|
I've contrived an attachment which solves the problem of tool jamming, just wait for some monthes as this attachment will be described in MEW.
|Thread: Do all bevel gears of the same MOD mesh?|
you must buy the gear pair as the angle between the gears axis is involved.
|Thread: spur gears for 2017|
Happy new year and best worksop wishes with spur gears for 2017.
|Thread: Wimberley lathe tool holder|
Look at my article "an HSS tooltip holder" in MEW N°239 issue (march 2016).
Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!
You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.
Click THIS LINK for full contact details.
For subscription issues please see THIS LINK.