Re: [Emc-users] Axis direction

[Dave Engvall]

> On Feb 5, 2024, at 6:19 PM, gene heskett  wrote:
> 
> On 2/5/24 18:26, John Dammeyer wrote:
>> Thanks everyone.  On the Unimat list there were a number of people really 
>> pushing the idea that Z+ was towards the chuck and it just didn't make 
>> sense.  And as we all know, nowadays once can find an internet source that 
>> supports almost anything.
>> Now if only the wand with the partridge feather core would arrive.  I'm sure 
>> the site selling it was not a con job.
> 
> That bit of humor John, reminds me a a msg I got from Ray Henry a day or so 
> ago. Said he wished he had known that a snow blower purchase was good at 
> warding off snow he would have bought one 20 years ago. He is in the UP and 
> has only had 1, 2" snowfall since buying a blower
> 
   If that really worked it might be worth it as we age. :-)
I
> I'm in WV and had 16" on the front deck about 2 weeks ago. Long gone now of 
> course.
> 
>> John
>>> -Original Message-
>>> From: andrew beck [mailto:andrewbeck0...@gmail.com]
>>> Sent: February 5, 2024 3:05 PM
>>> To: Enhanced Machine Controller (EMC)
>>> Subject: Re: [Emc-users] Axis direction
>>> 
>>> Same here every machine I have used (12 years CNC machining).  negative z
>>> is always towards the chuck.
>>> 
>>> Or on a mill brings the tool down to table. Or table up towards tool
>>> 
>>> 
>>> 
>>> On Tue, 6 Feb 2024, 09:23 Sam Sokolik,  wrote:
>>> 
 Even the k with a discrete component 60's control had smaller numbers
 towards the spindle...
 
 On Mon, Feb 5, 2024, 1:36�PM 
>>> wrote:
 
> 
> John,
> 
> Leaving aside right or left hand rules etc, leaning your head towards
> your left shoulder shows that the relationship between the spindle and
> the carriage is the same as on a vertical mill.
> To bring the spindle closer to the carriage is a move in the -Z
> direction.
> If the argument is about the tool position, with the work in the chuck,
> tilt your head to the right and you now have the tool on the right and
> the work on the left, like a mill with the tool above (on the right) and
> work in the chuck below (on the left0. Now the movement of the tool
> towards the work is still -Z.
> 
> Marcus
> 
> 
> On 2024-02-05 18:01, John Dammeyer wrote:
>> There's been an interesting discussion on the Unimat users list about
>> axis direction.  As usual someone can always find something on the web
>> that supports their opinion.
>> For example this one:
>> https://digit-chain.com/names-of-axes-in-cnc-machine/
>> 
>> However I disagree that movement towards the rotating axis, be it the
>> chuck on a lathe or the spinning cutter in a mill spindle,  is a Z+
>> direction.  Doesn't even seem intuitive to me either.
>> 
>> Now it's true that you can set the Z=0.00 position anywhere in the
>> G54... spaces depending on what you touch off on.  And then a
>>> movement
>> toward the spindle could be positive.  But in an G53 machine
>> coordinate space isn't a Z- direction towards the spinning tool or
>> part?
>> 
>> That's the way I have my LCNC system and MACH system set up.  Even
>>> my
>> ELS is negative towards the lathe chuck.
>> 
>> John
>> 
>> 
>> 
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> 
> Cheers, Gene Heskett, CET.
> -- 
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author, 1940)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> 
> 
> 
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Re: [Emc-users] where to nuy gears

[Dave Engvall]

Stockgears.com makes plastic gears. However, they seem expensive to me. 
Been years since I’ve seen a price list. 

Dave

Ps. Had to pull out a small cutting board they made as advertising to remember 
the name. ;-)


> On Mar 4, 2024, at 9:30 AM, andy pugh  wrote:
> 
> On Mon, 4 Mar 2024 at 17:02, fxkl47BF--- via Emc-users
>  wrote:
>> 
>> i'm looking for retail suppliers of straight internal spur gears
>> imperial and/or metric
>> other than sdp-si.com
> 
> https://www.hpcgears.com/n/products/6.internal_gears/internal_gears.php
> 
> 
> -- 
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1912
> 
> 
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Re: [Emc-users] where to nuy gears

[fxkl47BF--- via Emc-users]

On Mon, 4 Mar 2024, gene heskett wrote:

> On 3/4/24 12:32, andy pugh wrote:
>> On Mon, 4 Mar 2024 at 17:02, fxkl47BF--- via Emc-users
>>  wrote:
>>>
>>> i'm looking for retail suppliers of straight internal spur gears
>>> imperial and/or metric
>>> other than sdp-si.com
>>
>> https://www.hpcgears.com/n/products/6.internal_gears/internal_gears.php
>>
> And here in the states, Boston Gear has been the src since the 1964 era.
> Quality stuff.
>
> 
>

thanks guys



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Re: [Emc-users] where to nuy gears

[gene heskett]

On 3/4/24 12:32, andy pugh wrote:

On Mon, 4 Mar 2024 at 17:02, fxkl47BF--- via Emc-users
 wrote:


i'm looking for retail suppliers of straight internal spur gears
imperial and/or metric
other than sdp-si.com


https://www.hpcgears.com/n/products/6.internal_gears/internal_gears.php

And here in the states, Boston Gear has been the src since the 1964 era. 
Quality stuff.




Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis



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Re: [Emc-users] where to nuy gears

[andy pugh]

On Mon, 4 Mar 2024 at 17:02, fxkl47BF--- via Emc-users
 wrote:
>
> i'm looking for retail suppliers of straight internal spur gears
> imperial and/or metric
> other than sdp-si.com

https://www.hpcgears.com/n/products/6.internal_gears/internal_gears.php


-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912


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[Emc-users] where to nuy gears

[fxkl47BF--- via Emc-users]

i'm looking for retail suppliers of straight internal spur gears
imperial and/or metric
other than sdp-si.com



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