diff --git a/.gitignore b/.gitignore index 1534f6883e84a2d6a0a3ade1a7b3ffd793faa7b1..75e807a20378575ff776c638f4b3a73286ea4545 100644 --- a/.gitignore +++ b/.gitignore @@ -1 +1,4 @@ -.bak \ No newline at end of file +.bak +/local +.rhl +.3dmbak \ No newline at end of file diff --git a/README.md b/README.md index 14e50206794f24d0476bc4d0d22e6a5cd0ca5d68..62ab76b6ca724276176da466880f92c7ddaf942b 100644 --- a/README.md +++ b/README.md @@ -78,9 +78,15 @@ Now I use the 'bake' command to pull the geometry out of grasshopper and into Rh  +- Observations on Build + - Tricky to coordinate X / Z Axis as rails really need to be adjustable + - Setting Z Height and Thicknesses during fab is VERY important! Face your Bed! + - Countersink Bolts for Motor Mount, or bring hole size down so that you can tap + - Bring Motor Flange Hole size ++ + - Bring Motor Mount Screws -- to thread + ## Axis Blocks -Now I'm going to start detailing the rest of the machine. - Connect ur axis - Bringing layout & detail design together - It's almost as if I knew about this system while I was doing layout! *~!NONLINEARITYALERT!~* @@ -97,26 +103,65 @@ Now I brought this into Fusion to do some CAM. From Rhino, select the geometry f I go to the CAM section right away, and setup some stock. First thing, our Shopbots are setup in Inches, so check that in the 'units' in the top of the tree. I'll use a 0" offset on top of the model, 0.05" on the bottom (then we can be sure to cut through later on) and a 0.75" offset on the sides - I want to be sure to clear the screws I'll be using to fixture my HDPE sheet. -For tools, I set up with a 1/8" 'O-Cutter' - as in, one flute. This is going to be my detail workhorse - it'll cut teeth and holes. I also have 1/4" O-Cutter to do profiles and cutouts. My two other tools are a Chamfer Endmill, used for, well, the chamfers, and a 1/16" 2-flute endmill for some detailing on the pinion. Here's a quick table of the tools, and their feeds and speeds. I used [the CBA Feeds and Speeds Calculator](https://pub.pages.cba.mit.edu/feed_speeds/) to ballpark these, and I'll dial them in as I test the first axis. +For tools, I set up with a 1/8" 'O-Cutter' - as in, one flute. This is going to be my detail workhorse - it'll cut teeth and holes. I also have 1/4" O-Cutter to do profiles and cutouts. My two other tools are a Chamfer Endmill, used for, well, the chamfers, and a 1/16" 2-flute endmill for some detailing on the pinion. Here's a quick table of the tools, and their feeds and speeds. I used [the CBA Feeds and Speeds Calculator](https://pub.pages.cba.mit.edu/feed_speeds/) to ballpark these, and I'll dial them in as I test the first axis. + +A note on plastics - TODO heat, why single flute, sharp bits, what chips should look like + +#### HDPE: Type | Flutes | Diameter | What For | Feed, XY (IPM) | Feed, Plunge (IPM) | Spindle Speed (RPM) --- | --- | --- | --- | --- | --- | --- Endmill | 1 | 1/8" | Most Details, Holes | 55 | 25 | 13500 Endmill | 1 | 1/4" | Cutouts, Grunt | 55 | 25 | 7000 Endmill | 2 | 1/16" | Pinion Detail | 75 | 25 | 20000 -Chamfer Mill | 2 | 1/2" | Rail Edges | 100 | 50 | 6000 +Chamfer Mill | 2 | 1/2" | Rail Edges | 100 | 50 | 5000 + +#### Acetal: + +Type | Flutes | Diameter | What For | Feed, XY (IPM) | Feed, Plunge (IPM) | Spindle Speed (RPM) +--- | --- | --- | --- | --- | --- | --- +Endmill | 1 | 1/8" | Most Details, Holes | 55 | 25 | 13500 +Endmill | 1 | 1/4" | Cutouts, Grunt | 55 | 25 | 7000 +Endmill | 2 | 1/16" | Pinion Detail | 75 | 25 | 20000 +Chamfer Mill | 2 | 1/2" | Rail Edges | 100 | 50 | 5000 + +I also have a tool library for Fusion 360, include TODO here. + +The quality of your work on the Shopbot will directly influence the quality of work your CNC Machine will do! A few important points: + - Face your Bed! + - The chamferrail system relies on a consistent chamfer size. If your bed is slightly tilted in any direction, the size of the chamfer will change along the length of the cut. This means that along some sections of the rail there will be too much friction, and at others, it will be lose!. + - Carefully Zero the Z! + - Same as above, thicknesses of varying parts are vary (haha) important. Rather than using the shopbot's z-touchoff plate, I like to dial the Z in myself by dropping the height in 0.1 -> 0.01 -> 0.002 increments, while checking if the tip of the bit is scoring an edge on the material. + + -I also have a tool library for Fusion 360, include TODO here. + ## Assembly - Careful on Blocks! Trim and Align +- ## Plugging in Motors - Coils are connected - One and two +- Link Datasheet from StepperOnline ## Configuring TinyG - https://github.com/synthetos/TinyG/wiki +- Do Power to the board +- Should enumerate on a serial port +- Use https://github.com/synthetos/TinyG/wiki/TinyG-TG-Updater-App to flash new firmware + - Make sure you don't have the serial port open anywhere else +- Now complete setup +- Open in a serial terminal (Arduino has one built in, or see Neil for links) TODO + + + +## Chilipepper +- It's Rad +- Like Mods, Chilipeppr uses a local serial server to pass messages from the browser to your serial port. +- Download the Serial Port Json Server after configuring TinyG +- http://chilipeppr.com/tinyg - Steps / mm - Acceleration - Travel, etc diff --git a/images/axis-moving.gif b/images/axis-moving.gif new file mode 100644 index 0000000000000000000000000000000000000000..ef15269474b70b306f86e6e0377fe44078efc9d0 Binary files /dev/null and b/images/axis-moving.gif differ diff --git a/images/milling-chamfer.gif b/images/milling-chamfer.gif new file mode 100644 index 0000000000000000000000000000000000000000..21c2e1a20a08bc72c5d227b74bebbaf6c513317b Binary files /dev/null and b/images/milling-chamfer.gif differ diff --git a/images/milling-teeth.gif b/images/milling-teeth.gif new file mode 100644 index 0000000000000000000000000000000000000000..9e7f27f480fe8592465b2d0b76f8dc84a65c6dfc Binary files /dev/null and b/images/milling-teeth.gif differ diff --git a/purchase-parts.md b/purchase-parts.md index e63c186a4fbaa9972c60c43078a77a4f5c41fa57..590332b5eade2a261e002dad0593b738fefab04f 100644 --- a/purchase-parts.md +++ b/purchase-parts.md @@ -23,6 +23,8 @@ - Motors - Hardware - Set Screws + - M5 x 20 w/ Washers, Taps + - Countersink Bits Tools - o-cutter, 1/8" - Chamfering Bits for Others \ No newline at end of file