Messages

1

General Mach Discussion / Re: Chinese 6040 setup in Mach3

« on: November 20, 2013, 09:56:06 PM »

Having more problems with the couplers, Using aluminium 30mm couplers with a 8mm shaft. They dont seem to grip ball screw shafts tight enough. Also think the couplers might be a little short 30mm(1.2") need be about 35mm(1.38"). Any suggestions on better couplers greatly appreciated.

2

General Mach Discussion / Re: Chinese 6040 setup in Mach3

« on: November 16, 2013, 10:59:40 PM »

Seems the couplers are slipping after few minutes of running, Think ive fixed problem by moving couplers further down motor shaft, so they have better grip on Axis Shaft. Did one run seemed perfect then X axis did same thing unfortunately coupler broke when attempting to move stepper motor. Have ordered new Coupler will Keep you updated.

3

General Mach Discussion / Re: Chinese 6040 setup in Mach3

« on: November 16, 2013, 04:23:11 AM »

Have checked all screws, Bolts etc everything nice and tight.

4

General Mach Discussion / Re: Chinese 6040 setup in Mach3

« on: November 15, 2013, 10:16:10 PM »

Thanks Tweakie.cnc

Changed Z axis to Velocity 400 and Acceleration to 75 Exactly the same. Noticed when job finished and unit returned to home position z axis set to 12.7mm(1/2") above as per VCarve settings Bit is only approx 9.7 mm above home.

5

General Mach Discussion / Chinese 6040 setup in Mach3

« on: November 15, 2013, 01:12:55 AM »

Hoping someone can help me. Trying to setup my 6040 cnc. Instructions that came with the system for mach3 setup are as follows

Steps per on all AXis  640
Velocity X&Y            2500
Velocity z                800
Acceleration X&Y     200
Acceleration Z         150
Step Pulse              5
Dir Pulse                 1
This caused jobs to miss many steps doubled the job size and was generally Crap.

Changed steps to 320 x 2000 x 200 XY
This eliminated most problems.

Jobs are now correct size. Although job is perfect for approx first 50% after that Z axis seems to start going deeper. Cchecked that tool was properly tightened and work flat)
Job im doing is the Bullshead sign from vectric.


Any help greatly appreciated