Difference between revisions of "Denford Lathe"

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(Rearranging of page, addition of 'Specification' Section, additional resources under 'How-To' section. Addition of link to .f3d file for spinning top and Data on Fusion 360 licence changes, including 'Post-process All' add-on.)
 
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[[User:Dclarke|Dclarke]] ([[User talk:Dclarke|talk]]) 08:56, 28 January 2014 (EST)
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{{Tool
 +
|image=File:WDenfordNovaturn.JPG
 +
|manufacturer=Denford
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|model=Novaturn
 +
|location=Laser Area
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|obtained=2014
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|induction=No
 +
}}
 +
==Intro==
 +
A benchtop Denford Novaturn CNC lathe, typically controlled by [[Colosson]] computer.
  
A benchtop Denford Novaturn CNC lathe
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The Novaturn lathe has been in the space for some time and has had very little use to date. It is NOT a scary, hard to use machine and is available for use by any member without induction.
  
[[File:WDenfordNovaturn.JPG|The Denford CNC Lathe]]
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Obviously take care when using, if you are unsure of anything '''ASK SOMEONE'''; a good place to ask is the google group or #CNC [[Slack]] channel.
  
The novaturn lathe has been in the space for some time and has had very little use to date
+
If you have never used a Lathe or CNC machine at all before the learning curve can be a little steep but should be manageable.
it is NOT a scary hard to use machine and is avaialble for use by any member without induction.
 
  
Obviously take care when using, if you are unsure of anything ASK SOMEONE, a a good place to ask is the
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==How-To==
google group. If you have never used a Lathe or CNC machine at all before the learning curve can be a little
 
steep but should be manageable.
 
  
 
There are a number of good 'howto' videos on youtube
 
There are a number of good 'howto' videos on youtube
Including three by me :-) of designing a part and specifically to be cut on the lathe
+
Including three by [[User:chriscain|Chris Cain]] :-) showing how to design a part and cut it specifically on out lathe.
 
See lower in the section for the links to the videos.
 
See lower in the section for the links to the videos.
 +
 +
Fusion 360 is a great 3D design tool that is free for private/educational use.
 +
There are lots of how to work Fusion 360 vids on Youtube. The NYC CNC ones are all good. [https://www.youtube.com/watch?v=f9mMJdJWONo This video is specifically on toolpathing for a CNC lathe].
 +
 +
The [https://www.autodesk.com/campaigns/fusion-360-personal-use-changes October 2020 changes to Fusion 360 for personal use] hobbles (but isn't a barrier to use of) the Denford Lathe in two ways. The first is the loss of rapids, with all moves being made at cutting feedrate. The second is the inability to post multiple operations simultaneously for the lathe to run in sequence. There is currently no way around the first issue from Fusion 360-posted files without buying Fusion 360, or manually correcting the files afterwards. However, the second issue (besides manually pasting the toolpaths together) can be solved using the [https://github.com/TimPaterson/Fusion360-Batch-Post Post-Process All] utility, which allows entire setups to be posted. The settings which should be used are [https://wiki.nottinghack.org.uk/images/6/6c/Post_Process_All_Denford.png linked here].
  
 
There is also some generic videos on using a denford lathe.
 
There is also some generic videos on using a denford lathe.
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The novaturn software has a simulation mode' that lets you program a part an run it on the computer only
 
The novaturn software has a simulation mode' that lets you program a part an run it on the computer only
 
to check all is well before you actually cut it out for real. This gives an easy confidence boost.
 
to check all is well before you actually cut it out for real. This gives an easy confidence boost.
 
Other reference:
 
Novaturn Manual is available [https://wiki.nottinghack.org.uk/images/9/9f/Novaturn_vr_manual.pdf HERE]
 
  
 
The current default tool setup and offsets are good for the 4 'outside' tools
 
The current default tool setup and offsets are good for the 4 'outside' tools
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check tool offsets and work offsets before running a job.
 
check tool offsets and work offsets before running a job.
  
If you have any questions please ask, I am more than happy to give a demo/introduction if people do not feel confident enough to go it alone.  
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===Instruction Manuals===
 +
Other reference:
 +
Novaturn Manual is available [https://wiki.nottinghack.org.uk/images/9/9f/Novaturn_vr_manual.pdf HERE]
 +
 
 +
The VRTurning Manual is on the desktop of [[Colosson]], and is probably the best single resource for operation of the lathe.
  
 +
==Specification==
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Max Spindle speed: 3500RPM
  
Update 24/12/2016
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Max Chuck Diameter: 80mm
Tested the lathe today, it is 100% functional.
 
  
There is a post processor available below for Fusion 360
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<gallery>
which is a great 3d design tool that is free for private/educational use
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Denford Novaturn Classifcation and Rating.jpg
There are lots of how to work Fusion 360 vids on Youtube, the NYC CNC ones are all good.
+
</gallery>
  
My Post Processor for The denford Lathe in fusion 360
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==Chris Cain's Spinning Top==
All seems to work fine for external turning/grooving should be 100% functional but threading and internal cutting only tested on the sim
 
If you downloaded the previous version you need to switch, the last one had a problem in that it did not execute tool changes correctly on the
 
lathe even though they worked in the sim.
 
  
Youtube Videos on how to use the lathe are available:
 
  
Part 1  - Designing the top in fusion 360 and testing on the sim https://www.youtube.com/watch?v=k1-Z0pW2ES0<br />
 
  
Part 2  - Setting up the lathe, tool offsets etc https://www.youtube.com/watch?v=5A6WGTqPZko&t=66s<br />
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Youtube Videos on how to use the lathe are available:
  
Part 3  - Making the top  https://youtu.be/wTwbws0wuVc<br />
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# Designing the top in fusion 360 and testing on the sim https://www.youtube.com/watch?v=k1-Z0pW2ES0<br />
 +
# Setting up the lathe, tool offsets etc https://www.youtube.com/watch?v=5A6WGTqPZko&t=66s<br />
 +
# Making the top  https://youtu.be/wTwbws0wuVc<br />
  
 
<gallery>
 
<gallery>
Line 65: Line 75:
 
of unwary hackers.
 
of unwary hackers.
  
 +
[[User:chriscain|Chris Cain]]
  
Chris
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'''01/06/2022 - Douglas Creek''' - [https://drive.google.com/file/d/1ldFRSHHNjcDloeStpNwghsMW6xY2xk1i/view?usp=sharing Attached is a .f3d file for a spinning top, including CAM with feeds and speeds]. The demonstration was cut from an 18mm diameter brass bar, and posts and runs successfully using the Post-Processor below. (Note: These toolpaths haven't yet been tested with rapids enabled, see above).
  
[[File:Denford NovaLathe.zip|Denford NovaLathe.zip]]
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== Tooling ==
 +
There is an 8 post auto tool changer, odd mounts are for turning tools, even mounts are for drill/boring tools<br>
 +
Most of the Tooling is base around DCMM inserts. There is/was a pack of Sandvik <code>DCMM 11 T3 04-53</code> <br>
 +
Shank size is 12x12 for the turning tools
 +
 
 +
ISCAR SDJOR 8-3 Right Hand Turning  [https://www.iscar.com/eCatalog/Item.aspx?cat=3600885&fnum=341&mapp=IS&GFSTYP=M&srch=1 SDJCR 1212F-11]<br>
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ISCAR SDNCN 1212F-11 55° Grooving  [https://www.iscar.com/eCatalog/Item.aspx?cat=3600901&fnum=346&mapp=IS&GFSTYP=M&srch=1 SDNCN 1212F-11]<br>
 +
ISCAR NL 12-3 Right Hand Treading<br>
 +
MGEHR1212-2 MGMN200 Parting/Grooving NC3020 inserts, 12mm max depth<br>
 +
 
 +
===Fusion360 Tool Library===
 +
[[File:Novaturn.zip|Novaturn.zip]]
  
 +
[https://knowledge.autodesk.com/support/fusion-360/learn-explore/caas/sfdcarticles/sfdcarticles/How-to-import-a-tool-library-in-Fusion-360.html/ Instructions for installing The tool library in Fusion 360 can be found here]
  
===============Below here be dragons========================================================
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===Chris Cain's Fusion360 Post-Processor===
This stuff not needed to use the lathe, mostly collecting things as I find them in case we ever want to upgrade the Lathe
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[[File:Denford NovaLathe.zip|Denford NovaLathe.zip]]
to a better controller.
 
  
Auto Tool Changer.
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My Post Processor for The denford Lathe in [[Fusion 360]].
The ATC unit runs from a DC motor driving the tool turret via a worm Gear.
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All seems to work fine for external turning/grooving should be 100% functional but threading and internal cutting only tested on the sim.
There are 3 sensors (optical) that give a grey code encoded tool number as the turret rotates.
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If you downloaded the previous version you need to switch, the last one had a problem in that it did not execute tool changes correctly on the lathe even though they worked in the sim.
The tool is selected by putting 24 volts on the DC motor, the turret starts turning.  
 
Monitor the 3 sensors, when they have the correct tool number the DC voltage is reduced to 12 volts and the
 
polarity is reversed. This causes the toolpost to reverse and lock. The 12 volts reverse polarity is
 
maintained to keep the tool locked in place.
 
Diagrams of the tool changer board below.
 
  
[[File:NVT-D8A.pdf|NVT-D8A.pdf]]
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===Collet holders===
[[File:DOC100308.pdf|DOC100308.pdf]]
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[[File:Novaturn collets.jpeg|thumb|left]]
[[File:Toolpost.pdf|Toolpost.pdf]]
 
[[File:DOC100308-001.pdf|DOC100308-001.pdf]]
 
  
  
[[User:chriscain|Chris Cain]]
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[[Category:Computer aided manufacture]]
 
[[Category:Tools_and_Equipment]]
 
[[Category:Tools_and_Equipment]]

Latest revision as of 01:25, 6 June 2022

Denford Lathe
WDenfordNovaturn.JPG
Manufacturer Denford
Model Novaturn
Obtained 2014
Location Laser Area
Team Tools
Induction Required No
Booking {{{booking}}}
Status Defunct
Tools:   all pageslistPower ToolsBroken tools     {{}}

Intro

A benchtop Denford Novaturn CNC lathe, typically controlled by Colosson computer.

The Novaturn lathe has been in the space for some time and has had very little use to date. It is NOT a scary, hard to use machine and is available for use by any member without induction.

Obviously take care when using, if you are unsure of anything ASK SOMEONE; a good place to ask is the google group or #CNC Slack channel.

If you have never used a Lathe or CNC machine at all before the learning curve can be a little steep but should be manageable.

How-To

There are a number of good 'howto' videos on youtube Including three by Chris Cain :-) showing how to design a part and cut it specifically on out lathe. See lower in the section for the links to the videos.

Fusion 360 is a great 3D design tool that is free for private/educational use. There are lots of how to work Fusion 360 vids on Youtube. The NYC CNC ones are all good. This video is specifically on toolpathing for a CNC lathe.

The October 2020 changes to Fusion 360 for personal use hobbles (but isn't a barrier to use of) the Denford Lathe in two ways. The first is the loss of rapids, with all moves being made at cutting feedrate. The second is the inability to post multiple operations simultaneously for the lathe to run in sequence. There is currently no way around the first issue from Fusion 360-posted files without buying Fusion 360, or manually correcting the files afterwards. However, the second issue (besides manually pasting the toolpaths together) can be solved using the Post-Process All utility, which allows entire setups to be posted. The settings which should be used are linked here.

There is also some generic videos on using a denford lathe. See Part1 and Part 2

The lathe used is the same as ours except that we have a 8 position automatic tool changer.

The novaturn software has a simulation mode' that lets you program a part an run it on the computer only to check all is well before you actually cut it out for real. This gives an easy confidence boost.

The current default tool setup and offsets are good for the 4 'outside' tools Rough cut, Finishing, Parting and Threading. But the previous person may have changed or moved things so ALWAYS check tool offsets and work offsets before running a job.

Instruction Manuals

Other reference: Novaturn Manual is available HERE

The VRTurning Manual is on the desktop of Colosson, and is probably the best single resource for operation of the lathe.

Specification

Max Spindle speed: 3500RPM

Max Chuck Diameter: 80mm

Chris Cain's Spinning Top

Youtube Videos on how to use the lathe are available:

  1. Designing the top in fusion 360 and testing on the sim https://www.youtube.com/watch?v=k1-Z0pW2ES0
  2. Setting up the lathe, tool offsets etc https://www.youtube.com/watch?v=5A6WGTqPZko&t=66s
  3. Making the top https://youtu.be/wTwbws0wuVc

Post any successes/problems on the google groups, let me know if this is useful and I may be persuaded to do vids on the Bridgeport and Myford lathes although at present both of these do need an actual induction due to there ability to eat fingers of unwary hackers.

Chris Cain

01/06/2022 - Douglas Creek - Attached is a .f3d file for a spinning top, including CAM with feeds and speeds. The demonstration was cut from an 18mm diameter brass bar, and posts and runs successfully using the Post-Processor below. (Note: These toolpaths haven't yet been tested with rapids enabled, see above).

Tooling

There is an 8 post auto tool changer, odd mounts are for turning tools, even mounts are for drill/boring tools
Most of the Tooling is base around DCMM inserts. There is/was a pack of Sandvik DCMM 11 T3 04-53
Shank size is 12x12 for the turning tools

ISCAR SDJOR 8-3 Right Hand Turning SDJCR 1212F-11
ISCAR SDNCN 1212F-11 55° Grooving SDNCN 1212F-11
ISCAR NL 12-3 Right Hand Treading
MGEHR1212-2 MGMN200 Parting/Grooving NC3020 inserts, 12mm max depth

Fusion360 Tool Library

File:Novaturn.zip

Instructions for installing The tool library in Fusion 360 can be found here

Chris Cain's Fusion360 Post-Processor

File:Denford NovaLathe.zip

My Post Processor for The denford Lathe in Fusion 360. All seems to work fine for external turning/grooving should be 100% functional but threading and internal cutting only tested on the sim. If you downloaded the previous version you need to switch, the last one had a problem in that it did not execute tool changes correctly on the lathe even though they worked in the sim.

Collet holders

Novaturn collets.jpeg