MechMate CNC Router Forum

Go Back   MechMate CNC Router Forum > Personal Build Histories > Introduce yourself and start planning
Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Reply
 
Thread Tools
  #1  
Old Wed 14 November 2012, 16:30
mattmurphy
Just call me: 13 Raven St
 
Huddersfield
United Kingdom
Lightbulb Build starting in Huddersfield UK November 2012 **table alterations & long Z axis**

Hello everyone,

We are just finishing off adapting our garage to accommodate a CNC machine. We were going to invest in a GreenBull (larger version of Blackfoot plywood machine) but had a last minute change of plan and have decided to build a MechMate.

Part of the changes to the garage has been building a pit (2000 x 3600 x 900mm deep) which we hope will allow us to get a long Z axis travel by dropping down through the bed of the table, rather than raising the roof of the garage!

I am currently adapting the plans to suit 3050 x 1525 max sheet size (based on UK plywood availability) which is a 325mm reduction in width on the standard bed and also a reduction of 325mm on the overall machine width in our case. We intend to keep the standard length.

I am also trying to design the table in such a way that the whole table can be lowered into the pit, and so that the bed can be dropped out to the floor so when not in use so we can still get a car in and use the pit in the usual manner!

We only just switched on to the idea of building a MechMate 2 weeks ago and are hoping to get done by Christmas...

Any advice at this early stage much appreciated!!
Matt
Reply With Quote
  #2  
Old Wed 14 November 2012, 20:47
KenC
Just call me: Ken
 
Klang
Malaysia
Welcome!
Its amazing what people will come up to maximise real estate usage!
You caught my attention.
900mm pit is really tight for a MM + the lifting floor.
800mm tall MM is possible (remove the table legs) even 700~750 is possible depending how much Z-axis travel you are willing to sacrifice & how much Z-axis slide you are willing to chop-off.
Can't say much about 100~200mm tall retracted height Lifting floor. Not to say its impossible.

Good luck with your integration design.
Reply With Quote
  #3  
Old Thu 15 November 2012, 05:21
rischoof
Just call me: Rik #92
 
Goirle
Netherlands
Hello Matt,
A lot of design challenges and a tight deadline... sounds good,

Some Ideas.
make the table top just under the floor, 8 cm, and be able to "cover" the pit so you are able to create a flat garage floor.
your y and z are above the floor, but be able to move them to the end of the garage.
when you want to operate the machine, remove the covers and.. ready.
You can walk easily over the machine bed to fix the workpiece. not a bad idea with a large table
pay extra attention to rust protection, in a pit it will be sensitive for rust.
I placed a de humidifier to get the moisture down in my basement (80-90% humidity) place a blower in the pit to get air circulation
pay some attention to protect your guidings, they will be sensitive for damaging when you can walk over them.
I made some covers from wood during my building to protect the guidings

good luck and get some sleep when you get tired
Reply With Quote
  #4  
Old Thu 15 November 2012, 05:36
rischoof
Just call me: Rik #92
 
Goirle
Netherlands
long z axis.
I have a long z axis with linear guiding and ball screw. motor on top.
When my machine moves fast and stops, it's shakes, I can not see it in cutting quality, but when i place my hand on it I can feel it....
I am planning to make a shorter Z axis, travel 20 cm with linear guiding and ball bearings. My parts are already laying around. the weight which needs to be moved by the motor is 23 kg. I still doing this without compensation gas spring, but I had to slow down the speed, otherwise my motor is stolling
Reply With Quote
Reply

Register Options Profile Last 1 | 3 | 7 Days Search Today's Posts Mark Forums Read

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Long Z axis and motor springs glintid 40. Z-Slide 5 Thu 16 January 2014 09:32
I have been wanting to build one of these for so long,... cvriv.charles General - MM Build 66 Fri 13 December 2013 19:35
Long Awaited Return to Build - Paragould, AR Hillbillie Construction started, but not cutting yet 25 Wed 20 July 2011 18:17
20' long table, 5HP spindle - Port Aransas, USA skypoke MechMates already cutting 42 Sat 09 July 2011 18:07
How many motors use mechmate in the long axis albertoslayer Motors & their mountings 11 Tue 09 March 2010 10:44


All times are GMT -6. The time now is 06:39.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.