Differences

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--- bigcnc [2017/01/08 20:10] – sdh7
+++ bigcnc [2019/01/17 17:26] (current) – sdh7
@@ Line 1: / Line 1: @@
 Aka, "Son of Junior"
-The intention is to build a CNC router capable of manufacturing a guitar body.
+The intention is to build much bigger CNC router than we currently have.
-Effective table area of approximately 24"x48", though 48"x48" is under consideration.
+Effective table area of approximately 40" x 40" (probably a little less due to spindle width, etc.), Z-axis travel of about 4-5"?
-Current Status: Still largely in planning, but we're playing with some design options based around things we already have or can make/acquire easily.
+Current Status: Some parts have been built, courtesy of Steve Gray. Parts should arrive at the space at the end of December 2018. Assembly to occur beginning in early 2019.
-X-axis: Current thought is to use the "Sears Axis", or possibly cut-down supported rails. or the supported rails with no cutdown (48x48 version)
+X-axis: 1/2" supported rails with cast blocks. Leadscrew motion.
-Y-axis: Current thought is to use the 1/2" supported rails, along with cast blocks. Not sure of the drive mechanism yet.
+Y-axis:  1/2" supported rails with cast blocks. Twin Leadscrew motion.
+Z-axis: 1/2" supported rails with cast blocks. Leadscrew motion.
+Spindle: Makita or Grizzly laminate trimmer router. (measure diameter of Grizzly router to see if it will fit)
+Frame: Welded square steel tubing? Wooden torsion box? Aluminum extrusions are probably prohibitively expensive.
+Dust collection: will be tied into our dust collection system.
+Electronics:
+  * Motors: NEMA 23
+  * Motor Drivers: TB6600 Gecko lookalikes
+  * CNC electronics (grbl, BBB, etc.) - Current preferred mechanism is BeagleBone Black with Machinekit. A board for the BBB that splits out its pins to a pair of DB25 parallel ports has been purchased.
+Project plan
+  * X axis
+    * what else needs to be done?
+    * Turn down end of leadscrew
+  * Y axis
+    * Cut down rails to length if necessary?
+    * attach rails to base
+    * tap delrin nuts
+    * cut leadscrews to length?
+    * turn down leadscrews
+  * Z axis
+    * <del>attach spindle mounts</del>
+    * attach to X axis
+  * Table
+    * figure out design
+      * Torsion box
+      * leveling casters?
+    * Build the thing
+  * Electronics
+    * Wire up everything
+    * Procure motors if needed?
+  * Misc
+    * Dust collection setup?
+    * Vacuum hold-downs? (optional)
+    * <del>Clean up cast parts</del>
-Z-axis: possibly using a leadscrew from the optical mechanism we acquired with the "Sears Axis", and some of the linear rails on hand.
-Electronics: still unknown. grbl is a possibility, though bigger motor drivers would probably be needed.