Adjusting your backlash on a 4th axis cnc accessory is a major part of maintaining your product. Tormach machinist, Jeff Hamre, walks through backlash adjustment on a 4th axis with a cut-away model. This procedure is common to the 4th axis machines introduced before 2015.
Backlash can be thrown off during shipment, so it can’t be set at the factory, or through normal wear-and-tear, which makes adjustment necessary throughout the life of the machine.
Normal wear and tear will cause issues where you will need to adjust the backlash as well. Having 4th axis cnc capabilities is a great opportunity for many machinists. The first thing you want to do is engage the worm gear, into the ring gear. You may have to move the 4th axis table a little bit. The second step
Step two: There are two types of backlash adjustments. We are working with the set screw that locks the backlash adjustment screw in place. Back the set screw and adjustment screw out. Rotate counterclockwise. Turn the backlash adjustment screw back in while holding the motor. Once your 4th axis cnc table is adjusted, lock the screw back in place.
Tormach 4th Axis: http://goo.gl/xw3Nbk
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