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  1. 03-02-2012 #28
    MikeyC38's Avatar
    Lives in Bedfordshire, UK, United Kingdom.
    MikeyC38
    Last Activity: 04-03-2024 Has been a member for 9-10 years. Has a total post count of 146. Received thanks 13 times, giving thanks to others 72 times. Referred 1 members to the community.
    Hi Guys

    Been busy at work but have re-worked the Y-axis gantry design, taking into account all your comments. Have shifted the Y axis ballscrew closer to the Z axis gantry and used seperate extrusions to allow this and maintain torsional stiffness I think. I guess the main issue is the use of supported round rails - profiled rails would reduce the height and thickness. However given my other constraints of time, budget etc..lets see. The other approach is to use the extrusions in a L-shape as per Jazzcnc's photos. This has the advantage of mounting the BF and BK blocks on the Y-axis and not having to cut the rails. Will probably work up that design as well and make a decision. Now I just need some more money for the ali, steppers and electronics!

    Regards
    Mike
    Attached Thumbnails Attached Thumbnails Click image for larger version.  Name: MRC Gantry 2c iso se.jpg  Views: 1103  Size: 81.3 KB  ID: 5290   Click image for larger version.  Name: MRC Gantry 2c dia nw wireframe.jpg  Views: 498  Size: 178.9 KB  ID: 5291   Click image for larger version.  Name: MRC Gantry 2c dia nw.jpg  Views: 1641  Size: 107.0 KB  ID: 5292   Click image for larger version.  Name: MRC Gantry 2c iso se wireframe.jpg  Views: 444  Size: 119.7 KB  ID: 5293  
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