topic Re: Post required for Router in HSM Post Processor Forum

Post required for Router

snoofydog — Thu, 08 Sep 2016 22:06:47 GMT

I Have been using RS274 post, with limited success.

feeds and speeds are maxed out and tools are not put away at the end of the job.

Attached is as example of a square and a circle with two different tools from my existing software.

Plus also a copy of code requirements.

Any help would be greatly appreciated.

Thanks

Re: Post required for Router

bob.schultz — Tue, 13 Sep 2016 00:10:22 GMT

Here is a post that may match your requirements. There seems to be some discrepancy between the G-code format and the sample output that you sent. For example, if you are truly machining a square and a circle, there are too many points output for the square and no circular interpolation for the circle. I have added properties to this post that give you the option to linearize the points to stay within a certain tolerance when performing linear moves at a feed rate. This variable is 'linearizeTolerance' and by default is set to 1000, which will output the input points without adding points to the move. You can change this to a tolerance that will break up a move into multiple moves.

I have also added the property 'outputCircular', which is set by default to 'true'. If your machine does not support circular interpolation, then set this property to 'false'.

One other property added to this post is 'zHome', which allows you to define the home position for the Z-axis. It defaults to 20.

Let me know how this works for you. If you are still having problems, then please supply a test part along with the output created using this post with notes specifying what needs to be changed.

Re: Post required for Router

snoofydog — Thu, 15 Sep 2016 08:12:45 GMT

Thanks Bob,

I forgot to mention that the controller currently does not support arcs, so that may be the discrepancy in the output I sent.

Many thanks for your help, I won't be able to get to it for a while, but will let you know.

Thanks

Tony

Re: Post required for Router

snoofydog — Sun, 12 Mar 2017 00:29:34 GMT

Hi Bob,

Apologies for the late reply.

I just tried the post on the attached file.

On each pass you will notice on the Gcode that there are 3 z heights along each pass, as well as the ends.

On machining the feedrate slows at each of the 3 passes and then accelerates to the normal feedrate.

Meaning the feedrate is not consistent.

I don't know if this is a setting in fusion that I have done incorrectly, or the post

I did notice that the feedrates are MM per minute, rather that MM per sec. Which probably accounts for the max out feedrate issue I had before.

Tool now get put away at the end on the job, which is great.

Thanks Again