开云体育

> Is it just me, or are there others wondering what these > machines are intended for? > > How can the apparent goal of self-replication (of a largely metalic > machine) be > accomplished by

Speaking of which. I think the reprap machine could make strong structural elements out of that plastic if they laminated it with some glass fabric. With a 90deg rotary table they could make

Is it just me, or are there others wondering what these machines are intended for? How can the apparent goal of self-replication (of a largely metalic machine) be accomplished by squirting layers of

Jim, Geckos require 16milliamps to work, the parallel port delivers 10 milliamps per pin. The reason why geckos will work ok with 10 milliamps is because the tolerance of the optoisolators used. So

yea! that is smoking right along...dont put your finger in the way! cul brian f.

Hi guys, Haven't posted in awhile...been busy this summer with other projects. I just disassembled a HP7550A pen plotter and cut down the carriage to make a lightweight Y axis for a laser engraver.

Hi, Folks: While searching the net, I came across a version of EMC designed to work with a small Linux called PuppyLinux. I've downloaded it and am starting to play around with it. I'm wondering

afogassa wrote: Why would the CAM be doing the lookahead? Why can't the CNC control handle this? Normal lookahead, only worrying about machine acceleration is done in the CNC control, as the

wrote: complication - profile limit will DXF CAM you've Hi Peter, I do have deskcnc and it's good enough for this, but water jets needs a good cam that can look way ahead and predicts what is

Yes, that is part of the tool changer - the tool magazine. It holds 38 tools. Chris wrote:

Some stuff I didn't have time for this morning... Sorry, I'm not familiar with Mach because I don't own a copy. I'm not sure why the distinction. It's still the same number of

True enough, but I was thinking about straight-line movements and non-linear resolution in cartesian coordinates. A straight line movement through the range would have stepping.

Graham, Let me second that -- your site is excellent. In fact, your site was one of the reasons why I started working on my design (which is a "triaglide with vertical rails", as per your

I don't think you need any of that 5 axis (or 4 axis) complication - plasma cutters have all the same issues about a curved cutting profile through thicker material. Remember the KISS motto... You

Dennis Schmitz wrote: In the cartesian axis case, I don't think quantization error is a given, because the step resolution can match the coordinate system resolution. In my case, for example, steppers

HI Graham, *I* looked at your site! I've been back a few times, for that matter. I like the Hexel platform, and would love to make a working model of it. Not sure if I could work out ALL the

The new picture on the group page looks cool, whats happening to the left of the spindle, I think I can make out a chain but not a cable chain, is that part of a tool changer? Graham

<denschmitz@...> wrote: Whenever encoder surely you get quantization error of this sort even if you don't translate between co-ordinate systems. Graham

The point is that you don't really need to know how the transforms work to use them, and that people shouldn't be put off by the bit of robotics math because under the arcane terminology, it's pretty

Not really. Since CAD models are built in a cartesian coordinate system, somewhere along the way you need to translate into a motor space. Whenever you translate co-ordinate systems, you get