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Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Mon 25 January 2010, 23:17
Replies: 23
Views: 42,799
Posted By Gerald D
Right angle thread taps are just a bit hard to...

Right angle thread taps are just a bit hard to find outside your country Sean. :)

The big pulley has such a large amount of teeth covered by the belt that the holes will have no effect.
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Mon 25 January 2010, 04:52
Replies: 23
Views: 42,799
Posted By Gerald D
Oleks, that should work okay. Use 4 screws, each...

Oleks, that should work okay. Use 4 screws, each 10mm long. Tighten the first 2 screws onto the shaft, then put the next set of screws directly behind the first screws (finally you have 2 screws in...
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Fri 22 January 2010, 13:19
Replies: 23
Views: 42,799
Posted By Gerald D
Only valid for alu. pulleys if you have enough...

Only valid for alu. pulleys if you have enough screw length so that the alu does not strip out. For the steel pinion gears, we only have about 5mm screw length - if that was alu, it would strip. I...
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Thu 21 January 2010, 22:33
Replies: 23
Views: 42,799
Posted By Gerald D
Oleks, we have too little space, and the pinion...

Oleks, we have too little space, and the pinion gear is too small, to use those tapered locks as you first showed. The grubscrew (or setscrew - same thing) solution works okay if:

- at least 2...
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Mon 10 August 2009, 23:05
Replies: 23
Views: 42,799
Posted By Gerald D
That is a small pinion and there isn't much...

That is a small pinion and there isn't much "meat" in the collar. Certainly not enough for a grub-screw over a key. A key by itself won't handle the rapid reversals we experience. A grubscrew into...
Forum: Driving Mechanisms: Rack/pinion, gears, screws, belts & chains Fri 06 June 2008, 08:13
Replies: 23
Views: 42,799
Posted By Gerald D
Before we get into LocTite, let's look at the...

Before we get into LocTite, let's look at the number/location/size of the screws in the pinions . . . . .

The direct-drive stepper motors have two flat surfaces, 90 degrees apart, so that 2...
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