Concept for combo log dog, turner and leveler.

[Silver_Eagle]

Here is a link to a twin vertical with a roller system similar to to one I ran in Oregon. This system is for smaller log's, the one I ran had two solid 26' roller's that you could raise or lower and spin left or right individually to dog your log.

I looked for a video of the solid roller's for viewing, they where very slick. They work well set up with live log bunk's coming into the system as in the head rig I ran.

 

[captain_crunch]

As Jeff will tell you got to have back stop to work against fer turner to work Mobile Dim has made roller system to turn log since the 80's

[Brucer]

The basic concept is sound. Whether or not you can transform it into a working system is a whole other story. The only way you will find out is to try it. Don't expect the first two or three tries to work very well. For example, you may need to move the two shafts closer together or further apart to handle different sized logs.

I used to design things meticulously before building anything. That meant it took a long time to get something built, and then it usually didn't work as well as expected. Now I knock something together with no intention of it lasting more than a few cycles. Then I take what I learned from it and build a better version.

The Wood-Mizer mill didn't go into production straight off the drawing board.

[Hilltop366]

One problem I do see is being able to compensate for log taper for the clamping part, if one end is considerably larger it would clamp before the small end could be clamped.

[Brucer]

It wouldn't be hard to do that with your chain drive solution. If you have a chain drive for each pair of disks you could pull down the top sprocket further on one end to get deeper clamping action.

With disks mounted directly to shafts, a torsion spring between the pair of disks on a shaft would also do the job. Or you could direct drive the disks with independent hydraulic motors.

[Hilltop366]

Perhaps a easier build would be to use the the disc for turning, could use two larger sprockets to do the turning of the log, a motor to drive one shaft and two smaller sprockets and chain to connect them together. Then have two sets of hyd. log dogs, one set would adjust up and down for taper, and if needed the other set could slide back and forth for log length. Both sets of dogs could be run by the same valve and would self adjust for taper. This would requirer 1 motor and 1 cylinder for the turner, two cylinders for clamping, one cylinder for height adjustment for taper.

[Hilltop366]

Also wondering if turner/dogging disc set up on one end and just dogs on the other end would work?