print v0.2. start on openscad convertion

3d/winshe_main/main_winche.scad

@@ -0,0 +1,119 @@
+
+base_len = 190;
+base_hight = 6;
+base_width = 60; //??
+
+matt_thingness = 4;
+
+roller_small_d = 30;
+roller_flansh_d = 50;
+roller_flansh_t = 3;
+
+roller_above_base = 30;
+
+motor_shaft_d = 5;
+motor_shaft_base_hole = 8.5;
+motor_shaft_offCenter = 5;
+motor_mount_sep = 30;
+motor_mount_d = 4;
+
+side_width = 50;
+side_arch_r = 20;
+side_arch_center_h = 20;
+side_mount_hole_sep = 35;
+side_mount_hole_d = 4;
+
+// distance between left bottom of side and the center of the top arch
+side_corner_to_archCenter = sqrt((side_width/2)^2 + side_arch_center_h^2);
+// angle from center of arch between left bottom and trangent point
+side_flat_a = acos(side_arch_r / side_corner_to_archCenter);
+// angle from center of horizantal and trangent point
+side_arch_trangent_a = side_flat_a - acos((side_width/2) / side_corner_to_archCenter);
+// tangent point coordiates
+side_flat_trangentPoint_x = (side_width/2) - (side_arch_r*cos(side_arch_trangent_a));
+side_flat_trangentPoint_y = side_arch_center_h + (side_arch_r*sin(side_arch_trangent_a));
+
+$fa=5;
+$fs=1;
+
+module motor_mount_2d(){
+	union() {
+		circle(d=motor_shaft_base_hole);
+		translate([motor_mount_sep/2, -motor_shaft_offCenter])
+			circle(d=motor_mount_d);
+		translate([-(motor_mount_sep/2), -motor_shaft_offCenter])
+			circle(d=motor_mount_d);
+	}
+}
+
+module winch_side_2d(){
+	difference() {
+		union() {
+			translate([side_width/2, side_arch_center_h]) 
+				circle(r = side_arch_r);
+			polygon(points = [
+				[0, 0],
+				[side_flat_trangentPoint_x, side_flat_trangentPoint_y],
+				[side_width-side_flat_trangentPoint_x, side_flat_trangentPoint_y],
+				[side_width, 0]
+			]);
+		}
+		translate([side_width/2, roller_above_base])
+			motor_mount_2d();
+		translate([(side_width/2)-(side_mount_hole_sep/2), side_mount_hole_d/2])
+			circle(d = side_mount_hole_d);
+		translate([(side_width/2)+(side_mount_hole_sep/2), side_mount_hole_d/2])
+			circle(d = side_mount_hole_d);
+	}
+}
+
+module side_2d() {
+	union() {
+		translate([matt_thingness, base_hight]) {
+			winch_side_2d();
+			translate([base_len/2, 0])
+				winch_side_2d();
+		}
+		square([base_len + 2*matt_thingness, base_hight]);
+	}
+}
+
+module mid_winch_2d() {
+	difference() {
+		union() {
+			polygon(points = [
+				[0, 0],
+				[side_flat_trangentPoint_x, side_flat_trangentPoint_y],
+				[side_width-side_flat_trangentPoint_x, side_flat_trangentPoint_y],
+				[side_width, 0]
+			]);
+		}
+		translate([side_width/2, side_arch_center_h])
+			circle(r = side_arch_r);
+		translate([(side_width/2)-(side_mount_hole_sep/2), side_mount_hole_d/2])
+			circle(d = side_mount_hole_d);
+		translate([(side_width/2)+(side_mount_hole_sep/2), side_mount_hole_d/2])
+			circle(d = side_mount_hole_d);
+	}
+}
+
+module side_3d() {
+	linear_extrude(matt_thingness)
+		side_2d();
+}
+
+module side_right() {
+	rotate([90, 0, 0])
+		side_3d();
+}
+
+module side_left() {
+	translate([0, base_width+matt_thingness])
+	rotate([90, 0, 0])
+		side_3d();
+}
+
+// side_right();
+// side_left();
+linear_extrude(matt_thingness)
+	mid_winch_2d();