Re: [Emc-users] OT: need some advice

On Wed, May 14, 2014 at 4:47 AM, Viesturs Lācis wrote: > Current 3D model looks like this: > http://picpaste.com/model-XeiYl0y4.PNG > > I do not really agree that cutting both sides at once is more complicated. > Having 2 jointers and then feeder system for both of them and also some > mechanism,

Re: [Emc-users] OT: need some advice

2014-05-14 2:20 GMT+03:00 Gregg Eshelman : > Instead of driving the boards on their edges, drive on the broad surface > with rollers like a surface planer. > Well, they already are driven on the board surfaces with rollers like a surface planer, because my machine will actually attach to a surfac

Re: [Emc-users] OT: need some advice

On 14 May 2014 02:12, Przemek Klosowski wrote: > His point is that you are making this complicated by trying to cut > both sides at once Maybe, but it will be more efficient to make two narrow saw cuts than to turn all the excess into chippings. The waste material might be more useful too. I th

Re: [Emc-users] OT: need some advice

On Tue, May 13, 2014 at 4:14 PM, Viesturs Lācis wrote: > 2014-05-13 21:40 GMT+03:00 Ralph Stirling : > >> It seems to me what you really want is a jointer. You >> are just planing down the edge of a board of variable >> width, correct? That is what a jointer is for. >> > > Pretty much yes, excep

Re: [Emc-users] OT: need some advice

On 5/13/2014 2:14 PM, Viesturs Lācis wrote: > 2014-05-13 21:40 GMT+03:00 Ralph Stirling : > >> It seems to me what you really want is a jointer. You >> are just planing down the edge of a board of variable >> width, correct? That is what a jointer is for. >> > > Pretty much yes, except that board

Re: [Emc-users] OT: need some advice

2014-05-13 21:40 GMT+03:00 Ralph Stirling : > It seems to me what you really want is a jointer. You > are just planing down the edge of a board of variable > width, correct? That is what a jointer is for. > Pretty much yes, except that board widths will randomly change from 80 to 300 mm and AFA

Re: [Emc-users] OT: need some advice

Viesturs Lācis [viesturs.la...@gmail.com] Sent: Tuesday, May 13, 2014 10:54 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] OT: need some advice Thank you, guys, for the ideas. I will try to answer the questions: 1) encoder in the pivot point is something I like, it would make mechanical

Re: [Emc-users] OT: need some advice

I don't think you will get 0.5mm resolution from those optical sensors. They would be good to get a rough idea but of you want that sort of resolution you will need something more accurate. To stop the motors moving too far you could make your code hold position if the plate moves beyond a cert

Re: [Emc-users] OT: need some advice

Thank you, guys, for the ideas. I will try to answer the questions: 1) encoder in the pivot point is something I like, it would make mechanical design simplier, but that will require high-cpr encoder or there has to be some timing belt reducer; There will be no HAL, because using LinuxCNC for this

Re: [Emc-users] OT: need some advice

Depending on the required accuracy one possibility would be the Sharp GP2Y0A21YK IR distance sensor . It would give you a pretty good idea of the board width then refine on that using the stalled stepper/ servo current idea. Les On 13/05/2014 16:37, andy

Re: [Emc-users] OT: need some advice

On 13 May 2014 13:55, Viesturs Lācis wrote: > The problem with this is that once the board passes through, the spring > will return that lever to starting position very quickly and the motor > might not manage to follow, so I cannot think of a nice way to adjust, how > fast it returns back. You c

Re: [Emc-users] OT: need some advice

On 14-05-13 05:55 AM, Viesturs Lācis wrote: > Hello! > > I would like to ask for some advice, hints or ideas for a pretty simple > machine. > The task is to build a machine which would process side edges of wood > boards. > The thing is that board width varies in range of 80 to 300 mm in a random,

Re: [Emc-users] OT: need some advice

On 13.05.14 15:55, Viesturs Lācis wrote: > The task is to build a machine which would process side edges of wood > boards. The thing is that board width varies in range of 80 to 300 mm > in a random, unpredictable order. There are 2 motors - one for each > side. What I have in mind - boards are bas

Re: [Emc-users] OT: need some advice

to its inboard position. How fast are these boards moving? -- Ralph From: Viesturs Lācis [viesturs.la...@gmail.com] Sent: Tuesday, May 13, 2014 5:55 AM To: Enhanced Machine Controller (EMC) Subject: [Emc-users] OT: need some advice Hello! I would like to

[Emc-users] OT: need some advice

Hello! I would like to ask for some advice, hints or ideas for a pretty simple machine. The task is to build a machine which would process side edges of wood boards. The thing is that board width varies in range of 80 to 300 mm in a random, unpredictable order. There are 2 motors - one for each si