X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=filamentspool.scad;h=30fb27f71f00c2a8f6fc3d37f38400b575a62afa;hp=98819b24cb0ef3d4647ac16bc77282dfbe37a53a;hb=6ac8ee1bf10034cd86af9b4504338d1555d62eb4;hpb=59c46629d0aab88ec2703ff484c01db1718472c7

diff --git a/filamentspool.scad b/filamentspool.scad
index 98819b2..30fb27f 100644
--- a/filamentspool.scad
+++ b/filamentspool.scad
@@ -678,32 +678,39 @@ module StorArmHoleTest(){ ////toplevel
 
 //----- filament guide spacer -----
 
-guide_armdia = 15.0 + 0.75;
-guide_armwidth = 10.2 + 0.75;
+guide_armdia = 15.0;
+guide_armwidth = 10.2;
+guide_armcorelen = 15.3;
 
 guidefilclip_outerdia = 22.8;
 
+guidespacer_armslop = 0.75;
+guidespacer_armlenslop = 0.75;
+
 guidespacer_prongprotrude = 4;
 guidespacer_thick = 1.6;
-guidespacer_len = 15.3 + 0.75;
 
 // calculated
 
-guidespacer_wingheight = (guidefilclip_outerdia - guide_armdia)/2;
+guidespacer_armdia = guide_armdia + guidespacer_armslop;
+guidespacer_armwidth = guide_armwidth + guidespacer_armslop;
+guidespacer_len = guide_armcorelen + guidespacer_armlenslop;
+
+guidespacer_wingheight = (guidefilclip_outerdia - guidespacer_armdia)/2;
 
 module FilamentGuideArmTemplate(extra=0){
   intersection(){
-    circle(r= (guide_armdia/2) + extra);
-    square(center=true, [guide_armwidth+extra*2,
-			 guide_armdia + extra*2 + 10]);
+    circle(r= (guidespacer_armdia/2) + extra);
+    square(center=true, [guidespacer_armwidth+extra*2,
+			 guidespacer_armdia + extra*2 + 10]);
   }
 }
 
 module FilamentGuideSpacerInnerTemplate(){
   FilamentGuideArmTemplate();
-  translate([0, -guide_armdia/2])
-    square(center=true, [guide_armwidth - guidespacer_prongprotrude,
-			 guide_armdia]);
+  translate([0, -guidespacer_armdia/2])
+    square(center=true, [guidespacer_armwidth - guidespacer_prongprotrude,
+			 guidespacer_armdia]);
 }
 
 module FilamentGuideSpacer(){ ////toplevel
@@ -719,7 +726,7 @@ module FilamentGuideSpacer(){ ////toplevel
 		for (t=[[0, guidespacer_wingheight],
 			[guidespacer_len-1, -guidespacer_wingheight]])
 		  translate([0,0, t[0] + 0.5])
-		    cube([guidespacer_thick, guide_armdia + t[1]*2,
+		    cube([guidespacer_thick, guidespacer_armdia + t[1]*2,
 		      1],
 			 center=true);
 	      }
@@ -735,6 +742,90 @@ module FilamentGuideSpacer(){ ////toplevel
 }
 
 
+//----- replacement filament guide arm for TAZ-5 -----
+
+guidearm_armslop = 0.25;
+guidearm_armlenslop = 0.25;
+
+guidearm_hookprotr = 4;
+guidearm_hookprotrflat = 1;
+guidearm_hookslope = 0.3;
+
+guidearm_totallen = 60;
+
+guidearm_screwplatesz = 12;
+guidearm_screwplateth = 4;
+guidearm_screwhole = 4 + 0.5;
+
+guidearm_bendlen = 50;
+guidearm_bendslot = 5;
+
+// calculated
+
+guidearm_armdia = guide_armdia - guidearm_armslop;
+guidearm_armwidth = guide_armwidth - guidearm_armslop;
+guidearm_armcorelen = guide_armcorelen + guidearm_armlenslop;
+
+guidearm_base_z0 = -(guidearm_totallen - guidearm_armcorelen);
+
+guidearm_realbendlen = min(guidearm_bendlen,
+			   guidearm_totallen - guidearm_screwplateth - 0.1);
+
+module FilamentGuideArmShaftPositive(){
+  r = guidearm_armdia/2;
+
+  translate([0,0, guidearm_base_z0+1])
+    cylinder(r=r, h= guidearm_totallen);
+  translate([0,0, guidearm_armcorelen]){
+    hull(){
+      for (ts=[-1,+1]) {
+	translate([ts * guidearm_hookprotr, 0,0])
+	  cylinder(r=r, h=guidearm_hookprotrflat);
+      }
+      translate([0,0, guidearm_hookprotr/guidearm_hookslope])
+	cylinder(r=r, h=guidearm_hookprotrflat);
+    }
+  }
+}
+
+module FilamentGuideArmBase(){
+  translate([0,0, guidearm_base_z0]){
+    difference(){
+      translate([0,0, guidearm_screwplateth/2])
+	cube(center=true,
+	     [guidearm_armdia + guidearm_screwplatesz*2,
+	      guidearm_armwidth,
+	      guidearm_screwplateth]);
+      for (ts=[-1,+1]) {
+	translate([ts * (guidearm_armdia/2 + guidearm_screwplatesz/2),
+		   0,
+		   -20])
+	  cylinder(r= guidearm_screwhole/2, h=40);
+      }
+    }
+  }
+}
+
+module FilamentGuideArm(){ ///toplevel
+  intersection(){
+    difference(){
+      FilamentGuideArmShaftPositive();
+      translate([-guidearm_bendslot/2,
+		 -50,
+		 -guidearm_realbendlen + guidearm_armcorelen])
+	cube([guidearm_bendslot,
+	      100,
+	      guidearm_realbendlen + 100]);
+    }
+    cube(center=true,
+	 [guidearm_armdia*2,
+	  guidearm_armwidth,
+	  guidearm_totallen*3]);
+  }
+  FilamentGuideArmBase();
+}
+
+
 module Demo(){
   translate([-hubeffrad-30,50,0]) Hub();
   ArmEnd();
@@ -753,4 +844,6 @@ module Demo(){
 //AxleFrictionWasher();
 //StorageArmLeft();
 //StorArmHoleTest();
+//FilamentGuideSpacer();
+//FilamentGuideArm();
 //Demo();