Tools: Multiple Servo Tool
From Fab @ Home
None of the servo tools are supported yet. They require circut boards and programming that we have not done yet. Unless you can make the servos work, do not build this servo tool yet. It might change in the course of farther developments.
To make the eight valve tool, follow the same instruction except for four servos.
If one does not need all of the syringes, one can improve on this build space by not using the syringes farthest from the bridge. For every two syringes that are not used one gains 33.8 cm of build space in depth. Also, if one does not have the money to buy all the servos at once, since they are $14 each, one can simply use fewer servos and add more as one buys them. If one is not putting all the servos on the tool, shim the motor clamp with something so that it does not slant.
The multiple servo tool has an external pressure supply extruding the material and two snap motors regulating it. The multiple servo tool greatly simplifies the parameters that need to be changed when the material is changed. Materials that react with air cannot be used in the multiple servo tool, however. Also, the multiple servo tool requires an external air supply.
Prep the parts
- Follow the instructions here: Tools:Tool Mount in order to attach the quick mount tool system to the tool back plate.
- Follow the instructions here: Tools:Servo Valve Holder in order to make the valve holders. This is important!. If you do not follow the instructions, you might make the valve holders unable to fit on the valves. Then you would have to file them, and they woulrd not fit as well.
- Insert M3 threaded insert into the Middle Plates with a soldering iron.
Assemble the motor assembly
- Take the X adaptors off of the servos.
- Take half of the servos and put them in two middle plates, with the one on the left being closer to the edge. The servo is put in upside up with respect to the writing on the front.
- Slide the motor clamp over the servos.
- Screw on the motor clamp, starting with the screws on the left.
- Plug in every motor and make it go all the way to the right.
- Put the X adaptors back on the motors so that they are slightly clockwise of level X's and tighten. It is better to be farther to the right than almost level. This is to make sure that the servo can reach the on state. The off state is not a problem, since there are many degrees that are off.
- Repeat for the other motor assembly.
Assemble the tool body
- Attach the back plate to the bottom plate. Make sure the nuts are flush with the back, because otherwise they will keep the tool from mounting properly.
- Put the motor assemblies on the tool and screw on the front plate.
- Pull al the wires through the hole in the syringe stabilizer.
- Screw on the syringe stabilizer, being careful not to get it backward or upside down. If the hole in the syringe stabilizer is not in the middle, it should be towards the back.
Assemble the Nozzle Clamp
- Join the top plate and the back plate.
- Add the bottom plate.
- Add the front plate
- Secure the Nozzle Clamp with three screws.
Put syringes in the valve tool
- Put the syringes in the nozzle holder, one at a time.
- Put the valve holders on the valve.
- Align the valve holders with the motors on the tool.
- Gently slide the valve stabilizer onto the tool, ensuring that the everything fits. Do not force them. Doing so may damage the X motor adapter. File the valve holder if necessary.
- Secure the valve stabilizer with four screws.
- Repeat for the other side.