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BobsCNC RP9 Assembly Instructions Manual

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RP9 Assembly Instructions

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Summary of Contents for BobsCNC RP9

  • Page 1 RP9 Assembly Instructions...

  • Page 2: Table Of Contents

    Specifications ........................3 Getting Started ........................3 Safety first ........................3 Required tools ........................3 Building the Printer ......................4 Extruder Assembly......................4 Y Sub-assembly ......................7 X-Subassembly ......................13 Frame assembly ......................14 Z Assembly ........................15 Z - Rod Assembly ......................16 X Assembly ........................

  • Page 3: Specifications

    Specifications 5 ply Baltic birch frame Oil hardened drill rod linear rails Filament drive with high grip v-groove threaded coupler drives Remote extruder with 1.75 mm drive Foot print Width 520 mm ( including spool holder) Depth 550 mm ( with max travel) Height 660 mm ( room for filament guide tube) Print Area X 200 mm...

  • Page 4: Building The Printer

    Tools you may need for the electronic setup include:  soldering iron/solder  wire cutters  multimeter to correctly set up the power supply and stepper motors and general trouble shooting. For the printing you will want to have:  computer with a USB to program and run the printer ...
  • Page 5 1. Place the bearings into the rectangular slots of the extruder mount. 2. Wrap the bearings by inserting large nylon ties through the side opposite of the bearing into the slotted holes of the extruder mount. 3 Pull the bearing snug against the extruder mount (use pliers if needed). 4.
  • Page 6 5. Insert the 4 wires through the extruder mount from the same side as the bearings through the wire slot. 6. Pull the wires through and re-coil them to keep them out of the way and undamaged. M3 x20 7. Insert a M3 x 20 screw from the extruder side into the middle mounting hole. 8.

  • Page 7: Y Sub-Assembly

    10. Install the extruder lock to the extruder spacer with the cut groove facing down. 11. Insert the 2 remaining M3 x 20 screws into the holes. 12. Install the 3 nuts and tighten. Y Sub-assembly Parts for the Y sub-assembly include: A.
  • Page 8 1. Place the bearings in the rectangular slots of the plywood bearing holders. 2. Wrap the bearings by inserting large nylon ties through the side opposite of the bearing into the slotted holes of the bearing holders. 3 Pull the bearing snug against the bearing holders (use pliers if needed). 4.Cut off the excess of the nylon tie.
  • Page 9 Bearing mounting hole 5. Insert the bearing and then the nut on the M3 x 16 machine screw. 6. Tighten the nut 7. Install the screw and bearing through the top of the right mount through the bearing mounting hole. 8.
  • Page 10 9. Press in the 4 M3 nut into the slots on the bearing holders. 10. Assemble the left and right mounts to the bearing holders with 2 M3 x20 machine screw. 11. tighten the screws. Note orientation is important. The bearing center should line up with the hole on the left and right mounts.
  • Page 11 12. Slide both 8mm rods through the bearings on the extruder assembly. 13. Slide both rods into the left and right assemblies with the extruder nozzle facing down. Note that the nylon tie under the Y limit switch slots will be installed differently. 14.
  • Page 12 17. Wrap the rod by inserting the last large nylon tie through the same side as the rod into the remaining slotted holes of the left mount. 18. Pull the rod snug against the left mount (use pliers if needed). 19.

  • Page 13: X-Subassembly

    X-Subassembly Parts for the x-subassembly include: 1 Plywood cross member 4 LM8UU bearings 8 Large nylon ties 1. Place the bearings in the u-shaped slots of the cross member. 2. Wrap the bearings by inserting large nylon ties through the side opposite of the bearing into the slotted holes of the bearing holders.

  • Page 14: Frame Assembly

    Frame assembly Parts for the frame assembly include: A. 2 Top braces B. 1 Left frame C. 1 Right frame D. 1 X sub-assembly E. 2 Bottom braces Indicator drill marks F. 8 M3 x 20 machine screws G. 8 M3 x 20 nuts The orientation of three parts is important.

  • Page 15: Z Assembly

    Z Assembly Parts for the z assembly include: 1 Frame assembly 1 Y assembly 2 8mm rods 4 Large nylon ties The orientation of top nylon ties is important. The nylon locking block needs to be on the outside to give maximum Y axis travel. 1.

  • Page 16: Z - Rod Assembly

    5. Wrap the bottom of the rods by inserting large nylon ties through the side opposite as the rod into the slotted holes of the extruder mount. 6. Pull the rods snug against the frame (use pliers if needed). 7. Cut off the excess of the nylon ties. The Y assembly should slide on the 8mm rods freely.
  • Page 17 1. Assemble each of the threaded rods into the larger coupler slots. 2. Connect the coupler halves with 4 M3 x20 screws and nuts. 3. Only snug up the screws, they will be tightened in a later step. 6. Insert both of the coupler assemblies into the threaded inserts on the Y assembly...

  • Page 18: Assembly

    X Assembly Parts for the x assembly include: A. 2 X string holders B. 1 X bed mount C. 1 Frame assembly D. 2 8mm rods E. 4 Large nylon ties F. 4 M3 x16 machine screws G. 4 M3 nuts Note orientation.
  • Page 19 5. Wrap the bottom of the rods by inserting large nylon ties through the side opposite of the rod into the slotted holes of the extruder mount. 6. Pull the rods snug against the frame (use pliers if needed). 7. Cut off the excess of the nylon ties.

  • Page 20: Extruder (Cold End) Assembly

    Extruder (cold end) Assembly Parts for the cold end include: A. 1 Backing plate B. 1 Bearing arm C. 1 Mid plate D. 1 Front plate E. 1 Drive bearing F. 1 Nylon bushing G. 1 Stepper motor H. 1 Extruder drive gear I.
  • Page 21 7. Insert the screw and washer thru the nylon bushing on the extruder arm. 8. Insert the screw through the backing plate and screw into the stepper mounting hole. 9. Insert the extruder drive wheel and adjust the height so that the bearing is centered on the knurled part of the wheel.

  • Page 22: Adding The Electronics

    13. Stack the top plate onto the mid plate and insert 2 M3 x 22 machine screws. 14. Tighten all 4 of the screws. 15. Add the o-rings 16. Adjust the guide tube so that it is close to the drive wheel without touching it. Adding the Electronics Controller Assembly Parts for the Ramps:...

  • Page 23: Motion Stepper Motors

    1 Install the controller board underneath the bed on the right hand frame. 2. Insert and loosely tie the top two small nylon ties through the frame and Arduino mounting holes. 3. Insert the 2 bottom small nylon ties. 4. Gently snug the control board up against the frame. 5.
  • Page 24 1. Place the spacer on the X stepper motor and install the assembly onto the frame. 2. Install and tighten the 4 M3 x16 machine screws. 3. Install the Y stepper motor to the Y assembly with 4 M3 x 10 machine screws. 4 Tighten the machine screws.

  • Page 25: Limit Switches

    Limit Switches Parts for the motion stepper motors: A. 1 Frame assembly B. 2 Limit switches (long wires) C. 1 Limit switch (short wire) D. 4 M2.5 x16 machine screws E. 4 M2.5 nuts F. 1 small nylon tie 1. Insert the small nylon tie through the Y limit switch ( long wires) hole, loop around the rod and back up through the second limit switch hole.

  • Page 26: Adding The String Drive

    4. Install the X limit switch (short wires) on the inside of the lower left frame. 2 M2.5 x 16 screws and nuts. 5. Tighten the nuts Adding The String Drive Parts for the string drive assembly include: A. 1 X drive string assembly (shorter) B.

  • Page 27: Tying The Knots (Uni-Knot)

    Tying the knots (Uni-knot) This knot is called the Uni-knot and has "how to" videos on You-Tube. 1. Loop the string through the locking block of the nylon tie. 2. Loop the same string behind the horizontal stationary string, bring it up over both horizontal strings 3.
  • Page 28 4. Wrap the string around the threaded coupler 3 to 4 times close to the bottom of the threaded coupler. 5. Insert the large nylon tie with the string attached through the rear string holder and the loose nylon tie. 6.

  • Page 29: Y String Drive

    Y String Drive 1. Insert the large loose nylon tie into the top of the left hole and align the box end to the bottom hole of the extruder mount. 2. Insert the large nylon tie with the string attached into the bottom slot on the left side of the extruder.
  • Page 30 5. Route the string across the printer to the right hand mount around the pulley then back to the extruder. 6. Insert the large loose nylon tie into the right hole and align it with the top slot on the right side of the extruder.

  • Page 31: Adding The Extruder

    The extruder should move from left to right without contacting any parts of the frame or Y assembly parts. Adding the Extruder Parts for adding the extruder include: D. 1 Frame assembly E. 1 Extruder assembly F. 1 SMC connector G.
  • Page 32 1. Press the 2 M3 nuts into the right mounts. 2. Insert and tighten 2 M3 X16 machine screws. 3. Insert the SMC into the top of the extruder. 4. Insert the tube into the SMC...

  • Page 33: Build Platform Assembly

    Build Platform Assembly Parts for adding the build platform include: A. 1 Build Platform B. 4 Round Spacers C. 4 M3 X 20 machine screws D. 4 M3 Nuts The Build platform has counter bored holes. These holes should be facing up. 1.

  • Page 34: Connecting The Controller

    Connecting the Controller Ramps1.4 Connections The main power (A) and the stepper motors (C,H,I, and J) have to be connected correctly. Improper connection can permanently damage the board. If you are unsure about the connection, the internet is a good resource and has a great deal of information on the Ramps1.4.
  • Page 35 Error! No index entries found.Wire Routing With Nylon Ties There are drilled holes in the frame and small extra small nylon ties included in the kit to secure the wires. Several sets of wires will need clearance to move with the Y- assembly.

  • Page 36: Filament Spool Holder

    Filament Spool Holder Parts for adding the filament spool holder include: A. 1 Printer B. 1 Spool leg C. 1 Spool support The reel holder is designed to quickly change spools of filament. The groove in the top of the spool support should be oriented to the outside for to ensure spool clearance with the frame.

  • Page 37: Initial Controller Setup

    Congratulations your Printer is assembled! If you are new to 3D printers, there is a lot of learning ahead. The good news is that there are many resources online to help you with questions. You will need to choose software and firmware that suits your needs.

  • Page 38: Power Supply

    Extruder PID control for the recommended extruder (http://stores.ebay.com/ohpakron) Integral drive max PID P gain 2560 PID P gain PID P gain 4096 Temperature Sensor 7 Power supply The Power supply will need to be connected correctly to avoid possible damage to the controller board.

  • Page 39: First Print (Quick Guide)

    First print (quick guide) Initial setup and calibration of the printer will takes some time but once you understand the parameters you will be able to diagnose printing issues quickly. We have included some basic steps to get you started. Connecting the printer 1.
  • Page 40 3. Use the software controls to turn on the extruder to the correct working temperature of the filament. Once the extruder reaches the set temperature, use the software control to feed the filament into the nozzle. Check to make sure the extruder stepper motor rotates in the correct direction.
  • Page 41 7. Note the Z position displayed in the software. If the number is positive, then subtract this number and add the gauge thickness from the Z max length. For example. If the Z max length was set to 210 and once moved to the set position the software position reads 7.1 mm.

  • Page 42: Appendix

    Warranty and Return Policy 30 Day Warranty BobsCNC will guarantee all supplied parts for 30 days after the delivery date. If there are missing or defective parts, the buyer must contact Bobs CNC during this 30 day time frame using the "Contact Us" form located at BobsCNC.com. After 30 days, no warranty is given nor will any refund be given.
  • Page 43 Bottom Braces Left Frame Right Frame Coupler Halves Bed Mount String Holders Backing plate Bearing Arm Mid Plate Front Plate X Stepper Motor Spacer Build Plate Round Spacers Spool support Spool leg Wedge tool M2.5 X 16 Machine Screws M2.5 Nuts M3 X10 Machine Screws M3 X16 Machine Screws M3 X20 Machine Screws...

  • Page 44: Added Parts Included In The Deluxe Kit

    Arduino 2560 Stepper Drivers Power Supply The parts in the deluxe kit can be purchased separately.  The extruder for the RP9 printer can be found at: BobsCNC.com  NEMA17 stepper motors can be found in many online stores. The 5.5Kg.cm (76 oz-in).

This manual is also suitable for:

Rp8

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