Messages

2461

General Mach Discussion / Re: Tool problem!

« on: October 09, 2006, 01:18:15 PM »

If you are using tool compensation you need to set the diameter of the tool in your offsets for that tool.

If the tool is cutting big you increase the diameter size to make it cut smaller (making it stand back from the job more) and the opposite for cutting small.

Graham.

2462

General Mach Discussion / Re: RhinoCAM post processor

« on: October 08, 2006, 05:28:32 PM »

Hood is correct in his reply,  the G43 should be followed by a H value,  do you always get a zero, try telling rhino you are using tool 1 or above and see if that changes the output.

Graham.

2463

General Mach Discussion / Re: Using Mach3 on notebook

« on: October 02, 2006, 01:36:56 AM »

It sounds as if it will work but it would be a good idea to contact them and ask if its 3.3 or 5 volt output, 3.3 will cause you problems.

Graham.

2464

General Mach Discussion / Re: mach2 gcode thc300 problems

« on: October 02, 2006, 01:28:32 AM »

it sound as is you have absolute I & J set when you should have it incremental, check this on the settings

Graham.

2465

VB and the development of wizards / Re: Macro in background

« on: September 29, 2006, 05:30:27 PM »

the macropump runs about 4 times a second

Graham.

2466

VB and the development of wizards / Re: Macro in background

« on: September 29, 2006, 12:51:34 PM »

If you look in the manual under macropump that should do what you want.

Graham.

2467

General Mach Discussion / Re: Accuracy Considerations

« on: September 27, 2006, 07:26:34 PM »

How long is a piece of string!

There are many factors to the answer, here are a few

1. Is the machine worn
2. Are you using leadscrews or ball screws
3. Is there backlash, yaw, twist, etc.
4. What ratio of motor to screw

The list goes on and on

Mach is not the limiting factor, Mach will work to .0001" or less.

Its like this, make the machine accurate and Mach will do the rest.

Graham.

2468

Tangent Corner / Re: max torque or continuous torque for design

« on: September 27, 2006, 03:16:36 AM »

It takes far more torque to start the gantry moving than it dose to keep it moving,  then you have to think about the ratio of the motor to the shaft a 2:1 ratio in effect halves the starting torque required.

Graham.

2469

General Mach Discussion / Re: Spindle Start Macros

« on: September 26, 2006, 05:19:15 AM »

I don't understand!

If mach can stop the spindle why can't it start the spindle?

The relay must be cutting the power to the spindle somehow for it to be able to stop it at the bottom of the hole.

Can you post some photos of how all this is wired up.

Graham.

2470

General Mach Discussion / Re: Spindle Start Macros

« on: September 26, 2006, 02:14:21 AM »

What is setting "Input2"

If the G84 cycle is calling M4 to reverse the spindle and Input2 is active it will continue moving.

Graham.