BobsCNC RP9 Manual de usuario

RP9 Assembly Instructions

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................................................................................................................... 18

Extruder (cold end) Assembly...................................................................................... 20

Adding the Electronics...................................................................................................... 22

Controller Assembly..................................................................................................... 22

Motion Stepper motors ................................................................................................. 23

Limit Switches.............................................................................................................. 25

Adding The String Drive .................................................................................................. 26

Tying the knots (Uni-knot) ........................................................................................... 27

X string Drive ............................................................................................................... 27

Y String Drive............................................................................................................... 29

Adding the Extruder Driver.......................................................................................... 31

Build Platform Assembly.................................................................................................. 33

Connecting the Controller................................................................................................. 34

Ramps1.4 Connections ................................................................................................. 34

Wire Routing With Nylon Ties..................................................................................... 35

Filament Spool Holder...................................................................................................... 36

Initial Controller Setup ..................................................................................................... 37

Arduino 2560 Firmware settings .................................................................................. 37

Power supply................................................................................................................. 38

First print (quick guide)................................................................................................ 39

Appendix........................................................................................................................... 42

Warranty and Return Policy.......................................................................................... 42

Parts included in the basic kit ....................................................................................... 43

Added parts included in the deluxe kit ......................................................................... 44

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 (20.5") - including spool holder

Depth 550 mm (21.7" - with max travel

Height 660 mm (26") - room for filament guide tube

Print Area

X 200 mm (7.9")

Y 200 mm (7.9")

Z 200 mm (7.9")

The complete printer part list can be found in the appendix.

Getting Started

Safety first

Safety is your responsibility. Always use the

proper protective equipment and "safety

sense" when building or operating a 3D

printer.

Printers have high voltage power supply, and extruder operating temperatures can be over

250 degrees Celsius (482 F). The operator should understand the hazards before

operating a printer.

Required tools

Please browse through the instructions and get familiar with the steps before you

begin.

To put the kit together you will need:

a Phillips screwdriver for the screws

a pair of pliers to hold the nuts

a sharp knife or a pair of side cutters to trim the zip ties and string

sand paper to clean up the plywood parts and remove sharp edges.

Tools you may need for the electronic setup include:

25 to 40 watt soldering iron/solder

Diagonal Cutters (dikes)

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

calipers to measure motion distance and extrusion width

calibration block STP file that can be modeled or downloaded at BobsCNC.com

Building the Printer

We recommend a large working surface for assembling the printer. The plywood

may require some minor sanding and can be painted, stained or finished for a different

look. A coat of sealer or lacquer on all surfaces of the plywood will add stability.

Extruder Assembly

Parts for the extruder mount

assembly include:

A. 1 Extruder mount

B. 1 Extruder top mount

C. 1 Extruder lock

D. 3 M3 x 20 machine screws

E. 3 M3 nuts

F. 2 LM8UU bearings

G. 4 Large nylon ties

H. 1 Extruder

1. Place the bearings into the rectangular slots of the extruder mount.

2. Wrap the 2 bearings by inserting large nylon ties through the side opposite of the

bearing into the slotted holes of the extruder mount. The slots on one side are larger to

make room for nylon ties during a later step.

3 Pull the bearing snug against the extruder mount (use pliers if needed).

4. Cut off the excess of the nylon tie.

For a clean look and string clearance, insert the nylon straps first in the inboard

holes.

5. Insert the 4 extruder wires through the extruder mount from the same side as the

bearings through the wire slot.

6. Place the extruder through the extruder plywood mount.

7. Pull the wires through and re-coil them to keep them out of the way and undamaged.

8. Install the extruder lock.

9. Install the extruder top mount.

11. Insert the 3 M3 x 20 screws into the holes.

12. Install the 3 nuts and tighten.

Check to ensure that the thermistor is inserted into the small hole in the

aluminum block.

Y Sub-assembly

Parts for the Y sub-assembly include:

A. 1 Left mount

B. 2 Bearing holders

C. 1 Extruder assembly

D. 1 M3 x 16 machine screw

E. 1 Right mount

F. 4 M3 x 20 machine screws

G. 6 M3 nuts

H. V groove bearing 623VV

I. 2 LM8UU bearings

J. 12 Large nylon ties

K. 2 8mm rods

1. Place the bearings in the rectangular slots of the 2 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 2 bearing holders (use pliers if needed).

4.Cut off the excess of the nylon tie.

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. Install and tighten the nut.

The bearing should rotate freely once installed.

Bearing mounting hole

TOP

9. Press in the 2 M3 nuts into the slots on both of the 2 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.

Bearing centers

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