Post by ahahlberg on Feb 18, 2018 1:38:05 GMT
OK - First attempt at a job failed miserably. Created a job to cut some geometric figures in a piece of 1/2" furniture grade plywood (actual thickness .459) in order to start calibrating the frame for orthogonality of cuts and general precision.
I used a 1/2" spoil board with the workpiece on top of that.
I used the jog controls of UGS Platform to set the WCS to the front left corner upper surface of the workpiece and did a "Reset Zero" operation which showed all WCS positions as 0 and all absolute positions correctly wrt to the true absolute home.
The rendering of the gcode file showed the correct orientation of the WCS origin and the correct machining pattern, including the position of the first ramped plunge cut. The file is attached.
When I started the code send the machine correctly positioned over the origin of the first plunge cut, but then ran through a z-axis only homing operation and then plunged into the workpiece at a high rate, pushing the 1/4" end mill through the workpiece, the spoilboard and into the bed of the machine creating a hole as deep as the amount of exposed cutter from the collet. I immediately powered down the router and the machine.
In looking at the rendering in the UGS platform more closely once I rebooted and cleared the debris and examined the damage, I noted that the projected z-axis of the rendering in UGS showed a dimension of something like +261 mm and yet as I understand it, the default z limit is 92. But the other two dimensions, as given in the UGS rendering, are correct in mm showing that the conversion from the English to Metric Units is taking place correctly. Is that the source of the plunge as though it thought it were going from +262mm down to get to the zero point?
In any case, as this is my first part program, can you provide some clues as to why the machine attempts to plunge through the workpiece and into the bed? I don't see any dimension for any movement in Z in the first few move that are anything like that plunge it takes once positioned ( correctly) over the starting plunge point.
As a side comment - the "T2 M6" on line 9 is diagnosed as an error - that looks like a tool request - matches the tool definition in parenthesis on line 3. I reran the job a second time with that line removed and the result was the same.
I also recalibrated the router position and z-axis homing switch and as far as I can tell it's all working correctly. I'm stumped! Is there an environmental RF noise problem? Do I need to shield the electronics? Everything but the z-axis behavior is normal - it jogs all over accurately and repeatedly at all kinds of feed rates. But something is flakey - probably in my part program - that drives the Z-axis crazy.
I used a 1/2" spoil board with the workpiece on top of that.
I used the jog controls of UGS Platform to set the WCS to the front left corner upper surface of the workpiece and did a "Reset Zero" operation which showed all WCS positions as 0 and all absolute positions correctly wrt to the true absolute home.
The rendering of the gcode file showed the correct orientation of the WCS origin and the correct machining pattern, including the position of the first ramped plunge cut. The file is attached.
When I started the code send the machine correctly positioned over the origin of the first plunge cut, but then ran through a z-axis only homing operation and then plunged into the workpiece at a high rate, pushing the 1/4" end mill through the workpiece, the spoilboard and into the bed of the machine creating a hole as deep as the amount of exposed cutter from the collet. I immediately powered down the router and the machine.
In looking at the rendering in the UGS platform more closely once I rebooted and cleared the debris and examined the damage, I noted that the projected z-axis of the rendering in UGS showed a dimension of something like +261 mm and yet as I understand it, the default z limit is 92. But the other two dimensions, as given in the UGS rendering, are correct in mm showing that the conversion from the English to Metric Units is taking place correctly. Is that the source of the plunge as though it thought it were going from +262mm down to get to the zero point?
In any case, as this is my first part program, can you provide some clues as to why the machine attempts to plunge through the workpiece and into the bed? I don't see any dimension for any movement in Z in the first few move that are anything like that plunge it takes once positioned ( correctly) over the starting plunge point.
As a side comment - the "T2 M6" on line 9 is diagnosed as an error - that looks like a tool request - matches the tool definition in parenthesis on line 3. I reran the job a second time with that line removed and the result was the same.
I also recalibrated the router position and z-axis homing switch and as far as I can tell it's all working correctly. I'm stumped! Is there an environmental RF noise problem? Do I need to shield the electronics? Everything but the z-axis behavior is normal - it jogs all over accurately and repeatedly at all kinds of feed rates. But something is flakey - probably in my part program - that drives the Z-axis crazy.
