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Merge branch 'martinbudden-coreXY_belts'
This commit is contained in:
Chris Palmer
commit
a94e462f34
99
readme.md
99
readme.md
@ -24,24 +24,24 @@ A list of changes classified as breaking, additions or fixes is maintained in [C
|
||||
<tr><td> <a href = "#Axials">Axials</a> </td><td> <a href = "#Jack">Jack</a> </td><td> <a href = "#Rails">Rails</a> </td><td> <a href = "#Box">Box</a> </td><td> <a href = "#Annotation">Annotation</a> </td><td> <a href = "#BOM">BOM</a> </td></tr>
|
||||
<tr><td> <a href = "#Ball_bearings">Ball_bearings</a> </td><td> <a href = "#KP_pillow_blocks">KP_pillow_blocks</a> </td><td> <a href = "#Ring_terminals">Ring_terminals</a> </td><td> <a href = "#Butt_box">Butt_box</a> </td><td> <a href = "#Bezier">Bezier</a> </td><td> <a href = "#Clip">Clip</a> </td></tr>
|
||||
<tr><td> <a href = "#Batteries">Batteries</a> </td><td> <a href = "#LDRs">LDRs</a> </td><td> <a href = "#Rockers">Rockers</a> </td><td> <a href = "#Cable_grommets">Cable_grommets</a> </td><td> <a href = "#Catenary">Catenary</a> </td><td> <a href = "#Global">Global</a> </td></tr>
|
||||
<tr><td> <a href = "#Belts">Belts</a> </td><td> <a href = "#LED_meters">LED_meters</a> </td><td> <a href = "#Rod">Rod</a> </td><td> <a href = "#Camera_housing">Camera_housing</a> </td><td> <a href = "#Dogbones">Dogbones</a> </td><td> <a href = "#Polyholes">Polyholes</a> </td></tr>
|
||||
<tr><td> <a href = "#Blowers">Blowers</a> </td><td> <a href = "#LEDs">LEDs</a> </td><td> <a href = "#SCS_bearing_blocks">SCS_bearing_blocks</a> </td><td> <a href = "#Carriers">Carriers</a> </td><td> <a href = "#Fillet">Fillet</a> </td><td> <a href = "#Rounded_rectangle">Rounded_rectangle</a> </td></tr>
|
||||
<tr><td> <a href = "#Bulldogs">Bulldogs</a> </td><td> <a href = "#Leadnuts">Leadnuts</a> </td><td> <a href = "#SK_brackets">SK_brackets</a> </td><td> <a href = "#Corner_block">Corner_block</a> </td><td> <a href = "#Gears">Gears</a> </td><td> <a href = "#Sphere">Sphere</a> </td></tr>
|
||||
<tr><td> <a href = "#Buttons">Buttons</a> </td><td> <a href = "#Light_strips">Light_strips</a> </td><td> <a href = "#SMDs">SMDs</a> </td><td> <a href = "#Door_hinge">Door_hinge</a> </td><td> <a href = "#Hanging_hole">Hanging_hole</a> </td><td> <a href = "#Teardrops">Teardrops</a> </td></tr>
|
||||
<tr><td> <a href = "#Cable_strips">Cable_strips</a> </td><td> <a href = "#Linear_bearings">Linear_bearings</a> </td><td> <a href = "#SSRs">SSRs</a> </td><td> <a href = "#Door_latch">Door_latch</a> </td><td> <a href = "#Horiholes">Horiholes</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Cameras">Cameras</a> </td><td> <a href = "#Magnets">Magnets</a> </td><td> <a href = "#Screws">Screws</a> </td><td> <a href = "#Drag_chain">Drag_chain</a> </td><td> <a href = "#Layout">Layout</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Circlips">Circlips</a> </td><td> <a href = "#Mains_sockets">Mains_sockets</a> </td><td> <a href = "#Sealing_strip">Sealing_strip</a> </td><td> <a href = "#Fan_guard">Fan_guard</a> </td><td> <a href = "#Maths">Maths</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Components">Components</a> </td><td> <a href = "#Microswitches">Microswitches</a> </td><td> <a href = "#Shaft_couplings">Shaft_couplings</a> </td><td> <a href = "#Fixing_block">Fixing_block</a> </td><td> <a href = "#Offset">Offset</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#DIP">DIP</a> </td><td> <a href = "#Microview">Microview</a> </td><td> <a href = "#Sheets">Sheets</a> </td><td> <a href = "#Flat_hinge">Flat_hinge</a> </td><td> <a href = "#Quadrant">Quadrant</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#D_connectors">D_connectors</a> </td><td> <a href = "#Modules">Modules</a> </td><td> <a href = "#Spades">Spades</a> </td><td> <a href = "#Foot">Foot</a> </td><td> <a href = "#Round">Round</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Displays">Displays</a> </td><td> <a href = "#Nuts">Nuts</a> </td><td> <a href = "#Spools">Spools</a> </td><td> <a href = "#Handle">Handle</a> </td><td> <a href = "#Rounded_cylinder">Rounded_cylinder</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#O_ring">O_ring</a> </td><td> <a href = "#Springs">Springs</a> </td><td> <a href = "#PCB_mount">PCB_mount</a> </td><td> <a href = "#Rounded_polygon">Rounded_polygon</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Extrusions">Extrusions</a> </td><td> <a href = "#Opengrab">Opengrab</a> </td><td> <a href = "#Stepper_motors">Stepper_motors</a> </td><td> <a href = "#PSU_shroud">PSU_shroud</a> </td><td> <a href = "#Rounded_right_triangle">Rounded_right_triangle</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Fans">Fans</a> </td><td> <a href = "#PCB">PCB</a> </td><td> <a href = "#Swiss_clips">Swiss_clips</a> </td><td> <a href = "#Pocket_handle">Pocket_handle</a> </td><td> <a href = "#Sector">Sector</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#PCBs">PCBs</a> </td><td> <a href = "#Toggles">Toggles</a> </td><td> <a href = "#Press_fit">Press_fit</a> </td><td> <a href = "#Sweep">Sweep</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#PSUs">PSUs</a> </td><td> <a href = "#Transformers">Transformers</a> </td><td> <a href = "#Printed_box">Printed_box</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Panel_meters">Panel_meters</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td> <a href = "#Printed_pulleys">Printed_pulleys</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Variacs">Variacs</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td></td><td></td></tr>
|
||||
<tr><td> <a href = "#Belts">Belts</a> </td><td> <a href = "#LED_meters">LED_meters</a> </td><td> <a href = "#Rod">Rod</a> </td><td> <a href = "#Camera_housing">Camera_housing</a> </td><td> <a href = "#Core_xy">Core_xy</a> </td><td> <a href = "#Polyholes">Polyholes</a> </td></tr>
|
||||
<tr><td> <a href = "#Blowers">Blowers</a> </td><td> <a href = "#LEDs">LEDs</a> </td><td> <a href = "#SCS_bearing_blocks">SCS_bearing_blocks</a> </td><td> <a href = "#Carriers">Carriers</a> </td><td> <a href = "#Dogbones">Dogbones</a> </td><td> <a href = "#Rounded_rectangle">Rounded_rectangle</a> </td></tr>
|
||||
<tr><td> <a href = "#Bulldogs">Bulldogs</a> </td><td> <a href = "#Leadnuts">Leadnuts</a> </td><td> <a href = "#SK_brackets">SK_brackets</a> </td><td> <a href = "#Corner_block">Corner_block</a> </td><td> <a href = "#Fillet">Fillet</a> </td><td> <a href = "#Sphere">Sphere</a> </td></tr>
|
||||
<tr><td> <a href = "#Buttons">Buttons</a> </td><td> <a href = "#Light_strips">Light_strips</a> </td><td> <a href = "#SMDs">SMDs</a> </td><td> <a href = "#Door_hinge">Door_hinge</a> </td><td> <a href = "#Gears">Gears</a> </td><td> <a href = "#Teardrops">Teardrops</a> </td></tr>
|
||||
<tr><td> <a href = "#Cable_strips">Cable_strips</a> </td><td> <a href = "#Linear_bearings">Linear_bearings</a> </td><td> <a href = "#SSRs">SSRs</a> </td><td> <a href = "#Door_latch">Door_latch</a> </td><td> <a href = "#Hanging_hole">Hanging_hole</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Cameras">Cameras</a> </td><td> <a href = "#Magnets">Magnets</a> </td><td> <a href = "#Screws">Screws</a> </td><td> <a href = "#Drag_chain">Drag_chain</a> </td><td> <a href = "#Horiholes">Horiholes</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Circlips">Circlips</a> </td><td> <a href = "#Mains_sockets">Mains_sockets</a> </td><td> <a href = "#Sealing_strip">Sealing_strip</a> </td><td> <a href = "#Fan_guard">Fan_guard</a> </td><td> <a href = "#Layout">Layout</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Components">Components</a> </td><td> <a href = "#Microswitches">Microswitches</a> </td><td> <a href = "#Shaft_couplings">Shaft_couplings</a> </td><td> <a href = "#Fixing_block">Fixing_block</a> </td><td> <a href = "#Maths">Maths</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#DIP">DIP</a> </td><td> <a href = "#Microview">Microview</a> </td><td> <a href = "#Sheets">Sheets</a> </td><td> <a href = "#Flat_hinge">Flat_hinge</a> </td><td> <a href = "#Offset">Offset</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#D_connectors">D_connectors</a> </td><td> <a href = "#Modules">Modules</a> </td><td> <a href = "#Spades">Spades</a> </td><td> <a href = "#Foot">Foot</a> </td><td> <a href = "#Quadrant">Quadrant</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Displays">Displays</a> </td><td> <a href = "#Nuts">Nuts</a> </td><td> <a href = "#Spools">Spools</a> </td><td> <a href = "#Handle">Handle</a> </td><td> <a href = "#Round">Round</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#O_ring">O_ring</a> </td><td> <a href = "#Springs">Springs</a> </td><td> <a href = "#PCB_mount">PCB_mount</a> </td><td> <a href = "#Rounded_cylinder">Rounded_cylinder</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Extrusions">Extrusions</a> </td><td> <a href = "#Opengrab">Opengrab</a> </td><td> <a href = "#Stepper_motors">Stepper_motors</a> </td><td> <a href = "#PSU_shroud">PSU_shroud</a> </td><td> <a href = "#Rounded_polygon">Rounded_polygon</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Fans">Fans</a> </td><td> <a href = "#PCB">PCB</a> </td><td> <a href = "#Swiss_clips">Swiss_clips</a> </td><td> <a href = "#Pocket_handle">Pocket_handle</a> </td><td> <a href = "#Rounded_right_triangle">Rounded_right_triangle</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#PCBs">PCBs</a> </td><td> <a href = "#Toggles">Toggles</a> </td><td> <a href = "#Press_fit">Press_fit</a> </td><td> <a href = "#Sector">Sector</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#PSUs">PSUs</a> </td><td> <a href = "#Transformers">Transformers</a> </td><td> <a href = "#Printed_box">Printed_box</a> </td><td> <a href = "#Sweep">Sweep</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Panel_meters">Panel_meters</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td> <a href = "#Printed_pulleys">Printed_pulleys</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
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||||
<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Variacs">Variacs</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
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||||
<tr><td> <a href = "#Hygrometer">Hygrometer</a> </td><td> <a href = "#Pin_headers">Pin_headers</a> </td><td> <a href = "#Veroboard">Veroboard</a> </td><td> <a href = "#SSR_shroud">SSR_shroud</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#IECs">IECs</a> </td><td> <a href = "#Pulleys">Pulleys</a> </td><td> <a href = "#Washers">Washers</a> </td><td> <a href = "#Screw_knob">Screw_knob</a> </td><td></td><td></td></tr>
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<tr><td> <a href = "#Inserts">Inserts</a> </td><td></td><td> <a href = "#Wire">Wire</a> </td><td> <a href = "#Socket_box">Socket_box</a> </td><td></td><td></td></tr>
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@ -5574,6 +5574,69 @@ The coordinates of the lowest point on the curve can be retrieved by calling `ca
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<a href="#top">Top</a>
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---
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<a name="Core_xy"></a>
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## Core_xy
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Parameterised Core XY implementation. Draws the belts and provides utilities for positioning the pulleys.
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The belts are positioned according the bottom left "anchor" pulley and the top right drive pulley.
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Implementation has the following features:
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1. The drive and idler pulleys may be different sizes.
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2. The belt separation is parameterised.
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3. The separation of the plain and toothed pulleys on the Y carriages is parameterised, in both the X and the Y direction.
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4. The drive pulleys may be offset in the X and Y directions. If this is done, extra idler pulleys are added. This
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allows flexible positioning of the motors.
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[utils/core_xy.scad](utils/core_xy.scad) Implementation.
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[tests/core_xy.scad](tests/core_xy.scad) Code for this example.
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### Properties
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| Function | Description |
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|:--- |:--- |
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| `coreXY_belt(type)` | Belt type |
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| `coreXY_drive_pulley(type)` | Drive pulley type |
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| `coreXY_lower_belt_colour(type)` | Colour of the lower belt |
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| `coreXY_lower_tooth_colour(type)` | Colour of the lower belt's teeth |
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| `coreXY_plain_idler(type)` | Plain idler type |
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| `coreXY_toothed_idler(type)` | Toothed idler type |
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| `coreXY_upper_belt_colour(type)` | Colour of the upper belt |
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| `coreXY_upper_tooth_colour(type)` | Colour of the upper belt's teeth |
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### Functions
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| Function | Description |
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|:--- |:--- |
|
||||
| `coreXY_coincident_separation(type)` | Value of x, y separation to make y-carriage pulleys coincident |
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| `coreXY_drive_plain_idler_offset(type)` | Offset of plain drive idler pulley |
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||||
| `coreXY_drive_pulley_x_alignment(type)` | Belt alignment offset of the drive pulley relative to the anchor pulley |
|
||||
| `coreXY_drive_toothed_idler_offset(type)` | Offset of toothed drive idler pulley |
|
||||
| `coreXY_plain_idler_offset(type)` | Offset of y-carriage plain idler |
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||||
| `coreXY_toothed_idler_offset(type)` | offset of y-carriage toothed idler |
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||||
|
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### Modules
|
||||
| Module | Description |
|
||||
|:--- |:--- |
|
||||
| `coreXY(type, size, pos, separation, x_gap, plain_idler_offset = 0, upper_drive_pulley_offset, lower_drive_pulley_offset, show_pulleys = false)` | Wrapper module to draw both belts of a coreXY setup |
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||||
| `coreXY_belts(type, carriagePosition, coreXYPosBL, coreXYPosTR, separation, x_gap = 20, upper_drive_pulley_offset = [0, 0], lower_drive_pulley_offset = [0, 0], show_pulleys = false)` | Draw the coreXY belts |
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||||
| `coreXY_half(type, size, pos, separation_y = 0, x_gap = 0, plain_idler_offset = 0, drive_pulley_offset = [0, 0], show_pulleys = false, lower_belt = false, hflip = false)` | Draw one belt of a coreXY setup |
|
||||
|
||||
|
||||
|
||||
### Vitamins
|
||||
| Qty | Module call | BOM entry |
|
||||
| ---:|:--- |:---|
|
||||
| 1 | `belt(GT2x6, [ ... ], [10.0078, 11.69], [0, -24.686])` | Belt GT2 x 6mm x 742mm |
|
||||
| 1 | `belt(GT2x6, [ ... ], [10.0078, 11.69], [0, -24.686])` | Belt GT2 x 6mm x 852mm |
|
||||
| 7 | `pulley(GT2x16_toothed_idler)` | Pulley GT2 idler 16 teeth |
|
||||
| 3 | `pulley(GT2x16_plain_idler)` | Pulley GT2 idler smooth 9.63mm |
|
||||
| 2 | `pulley(GT2x20ob_pulley)` | Pulley GT2OB 20 teeth |
|
||||
| 8 | `screw(M3_cap_screw, 20)` | Screw M3 cap x 20mm |
|
||||
| 4 | `screw(M3_grub_screw, 6)` | Screw M3 grub x 6mm |
|
||||
| 2 | `NEMA(NEMA17M)` | Stepper motor NEMA17 x 40mm |
|
||||
|
||||
|
||||
<a href="#top">Top</a>
|
||||
|
||||
---
|
||||
|
||||
134
tests/core_xy.scad
Normal file
134
tests/core_xy.scad
Normal file
@ -0,0 +1,134 @@
|
||||
//
|
||||
// NopSCADlib Copyright Chris Palmer 2020
|
||||
// nop.head@gmail.com
|
||||
// hydraraptor.blogspot.com
|
||||
//
|
||||
// This file is part of NopSCADlib.
|
||||
//
|
||||
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
|
||||
// GNU General Public License as published by the Free Software Foundation, either version 3 of
|
||||
// the License, or (at your option) any later version.
|
||||
//
|
||||
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
// See the GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along with NopSCADlib.
|
||||
// If not, see <https://www.gnu.org/licenses/>.
|
||||
//
|
||||
|
||||
include <../core.scad>
|
||||
include <../vitamins/pulleys.scad>
|
||||
include <../vitamins/screws.scad>
|
||||
include <../vitamins/stepper_motors.scad>
|
||||
include <../vitamins/washers.scad>
|
||||
|
||||
include <../utils/core_xy.scad>
|
||||
|
||||
|
||||
module coreXY_belts_test() {
|
||||
coreXY_type = coreXY_GT2_20_16;
|
||||
plain_idler = coreXY_plain_idler(coreXY_type);
|
||||
toothed_idler = coreXY_toothed_idler(coreXY_type);
|
||||
|
||||
coreXYPosBL = [0, 0, 0];
|
||||
coreXYPosTR = [200, 150, 0];
|
||||
separation = [0, coreXY_coincident_separation(coreXY_type).y, pulley_height(plain_idler) + washer_thickness(M3_washer)];
|
||||
pos = [100, 50];
|
||||
|
||||
upper_drive_pulley_offset = [40, 10];
|
||||
lower_drive_pulley_offset = [0, 0];
|
||||
|
||||
coreXY_belts(coreXY_type,
|
||||
carriagePosition = pos,
|
||||
coreXYPosBL = coreXYPosBL,
|
||||
coreXYPosTR = coreXYPosTR,
|
||||
separation = separation,
|
||||
x_gap = 10,
|
||||
upper_drive_pulley_offset = upper_drive_pulley_offset,
|
||||
lower_drive_pulley_offset = lower_drive_pulley_offset,
|
||||
show_pulleys = true);
|
||||
|
||||
|
||||
translate([coreXYPosBL.x + separation.x/2, coreXYPosTR.y + upper_drive_pulley_offset.y, separation.z/2]) {
|
||||
// add the upper drive pulley stepper motor
|
||||
translate([coreXY_drive_pulley_x_alignment(coreXY_type) + upper_drive_pulley_offset.x, 0, -pulley_height(coreXY_drive_pulley(coreXY_type))])
|
||||
NEMA(NEMA17M);
|
||||
|
||||
// add the screws for the upper drive offset idler pulleys if required
|
||||
if (upper_drive_pulley_offset.x > 0) {
|
||||
translate(coreXY_drive_plain_idler_offset(coreXY_type))
|
||||
translate_z(-pulley_offset(plain_idler))
|
||||
screw(M3_cap_screw, 20);
|
||||
translate(coreXY_drive_toothed_idler_offset(coreXY_type))
|
||||
translate_z(-pulley_offset(toothed_idler))
|
||||
screw(M3_cap_screw, 20);
|
||||
} else if (upper_drive_pulley_offset.x < 0) {
|
||||
translate([-pulley_od(plain_idler), coreXY_drive_plain_idler_offset(coreXY_type).y])
|
||||
translate_z(-pulley_offset(plain_idler))
|
||||
screw(M3_cap_screw, 20);
|
||||
translate([2*coreXY_drive_pulley_x_alignment(coreXY_type), coreXY_drive_toothed_idler_offset(coreXY_type).y])
|
||||
translate_z(-pulley_offset(toothed_idler))
|
||||
screw(M3_cap_screw, 20);
|
||||
}
|
||||
}
|
||||
|
||||
translate([coreXYPosTR.x - separation.x/2, coreXYPosTR.y + lower_drive_pulley_offset.y, -separation.z/2]) {
|
||||
// add the lower drive pulley stepper motor
|
||||
translate([-coreXY_drive_pulley_x_alignment(coreXY_type) + lower_drive_pulley_offset.x, 0, -pulley_height(coreXY_drive_pulley(coreXY_type))])
|
||||
NEMA(NEMA17M);
|
||||
|
||||
// add the screws for the lower drive offset idler pulleys if required
|
||||
if (lower_drive_pulley_offset.x < 0) {
|
||||
translate([-coreXY_drive_plain_idler_offset(coreXY_type).x, coreXY_drive_plain_idler_offset(coreXY_type).y])
|
||||
translate_z(-pulley_offset(plain_idler))
|
||||
screw(M3_cap_screw, 20);
|
||||
translate(coreXY_drive_toothed_idler_offset(coreXY_type))
|
||||
translate_z(-pulley_offset(toothed_idler))
|
||||
screw(M3_cap_screw, 20);
|
||||
} else if (lower_drive_pulley_offset.x > 0) {
|
||||
translate([pulley_od(plain_idler), coreXY_drive_plain_idler_offset(coreXY_type).y])
|
||||
translate_z(-pulley_offset(plain_idler))
|
||||
screw(M3_cap_screw, 20);
|
||||
translate([-2*coreXY_drive_pulley_x_alignment(coreXY_type), coreXY_drive_toothed_idler_offset(coreXY_type).y])
|
||||
translate_z(-pulley_offset(toothed_idler))
|
||||
screw(M3_cap_screw, 20);
|
||||
}
|
||||
}
|
||||
|
||||
// add the screw for the left upper idler pulley
|
||||
translate([coreXYPosBL.x + separation.x/2, coreXYPosBL.y, separation.z])
|
||||
screw(M3_cap_screw, 20);
|
||||
|
||||
// add the screw for the right upper idler pulley
|
||||
translate([coreXYPosTR.x + separation.x/2, coreXYPosBL.y, separation.z])
|
||||
screw(M3_cap_screw, 20);
|
||||
|
||||
if (separation.x != 0) {
|
||||
// add the screw for the left lower idler pulley
|
||||
translate([coreXYPosBL.x - separation.x/2, coreXYPosBL.y, 0])
|
||||
screw(M3_cap_screw, 20);
|
||||
|
||||
// add the screw for the right lower idler pulley
|
||||
translate([coreXYPosTR.x - separation.x/2, coreXYPosBL.y, 0])
|
||||
screw(M3_cap_screw, 20);
|
||||
}
|
||||
|
||||
translate([-separation.x/2, pos.y + coreXYPosBL.y -separation.y/2, -separation.z/2 + pulley_height(plain_idler)/2]) {
|
||||
// add the screw for the left Y carriage toothed idler
|
||||
translate([coreXYPosBL.x, coreXY_toothed_idler_offset(coreXY_type).y, 0])
|
||||
screw(M3_cap_screw, 20);
|
||||
// add the screw for the left Y carriage plain idler
|
||||
translate([coreXYPosBL.x + separation.x + coreXY_plain_idler_offset(coreXY_type).x, separation.y + coreXY_plain_idler_offset(coreXY_type).y, separation.z])
|
||||
screw(M3_cap_screw, 20);
|
||||
// add the screw for the right Y carriage toothed idler
|
||||
translate([coreXYPosTR.x + separation.x, coreXY_toothed_idler_offset(coreXY_type).y, separation.z])
|
||||
screw(M3_cap_screw, 20);
|
||||
// add the screw for the right Y carriage plain idler
|
||||
translate([coreXYPosTR.x - coreXY_plain_idler_offset(coreXY_type).x, separation.y + coreXY_plain_idler_offset(coreXY_type).y, 0])
|
||||
screw(M3_cap_screw, 20);
|
||||
}
|
||||
}
|
||||
|
||||
if ($preview)
|
||||
coreXY_belts_test();
|
||||
BIN
tests/png/core_xy.png
Normal file
BIN
tests/png/core_xy.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 125 KiB |
196
utils/core_xy.scad
Normal file
196
utils/core_xy.scad
Normal file
@ -0,0 +1,196 @@
|
||||
//
|
||||
// NopSCADlib Copyright Chris Palmer 2020
|
||||
// nop.head@gmail.com
|
||||
// hydraraptor.blogspot.com
|
||||
//
|
||||
// This file is part of NopSCADlib.
|
||||
//
|
||||
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
|
||||
// GNU General Public License as published by the Free Software Foundation, either version 3 of
|
||||
// the License, or (at your option) any later version.
|
||||
//
|
||||
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
// See the GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along with NopSCADlib.
|
||||
// If not, see <https://www.gnu.org/licenses/>.
|
||||
//
|
||||
|
||||
//
|
||||
//! Parameterised Core XY implementation. Draws the belts and provides utilities for positioning the pulleys.
|
||||
//!
|
||||
//! The belts are positioned according the bottom left "anchor" pulley and the top right drive pulley.
|
||||
//! Implementation has the following features:
|
||||
//! 1. The drive and idler pulleys may be different sizes.
|
||||
//! 2. The belt separation is parameterised.
|
||||
//! 3. The separation of the plain and toothed pulleys on the Y carriages is parameterised, in both the X and the Y direction.
|
||||
//! 4. The drive pulleys may be offset in the X and Y directions. If this is done, extra idler pulleys are added. This
|
||||
//! allows flexible positioning of the motors.
|
||||
//
|
||||
include <../core.scad>
|
||||
include <../vitamins/belts.scad>
|
||||
include <../vitamins/pulleys.scad>
|
||||
|
||||
|
||||
coreXY_GT2_20_20 = ["coreXY_20_20", GT2x6, GT2x20ob_pulley, GT2x20_toothed_idler, GT2x20_plain_idler, [0, 0, 1], [0, 0, 0.5, 1], [0, 1, 0], [0, 0.5, 0, 1] ];
|
||||
coreXY_GT2_20_16 = ["coreXY_20_16", GT2x6, GT2x20ob_pulley, GT2x16_toothed_idler, GT2x16_plain_idler, [0, 0, 1], [0, 0, 0.5, 1], [0, 1, 0], [0, 0.5, 0, 1] ];
|
||||
coreXY_GT2_16_16 = ["coreXY_16_16", GT2x6, GT2x16_pulley, GT2x16_toothed_idler, GT2x16_plain_idler, [0, 0, 1], [0, 0, 0.5, 1], [0, 1, 0], [0, 0.5, 0, 1] ];
|
||||
|
||||
function coreXY_belt(type) = type[1]; //! Belt type
|
||||
function coreXY_drive_pulley(type) = type[2]; //! Drive pulley type
|
||||
function coreXY_toothed_idler(type) = type[3]; //! Toothed idler type
|
||||
function coreXY_plain_idler(type) = type[4]; //! Plain idler type
|
||||
function coreXY_upper_belt_colour(type) = type[5]; //! Colour of the upper belt
|
||||
function coreXY_upper_tooth_colour(type) = type[6]; //! Colour of the upper belt's teeth
|
||||
function coreXY_lower_belt_colour(type) = type[7]; //! Colour of the lower belt
|
||||
function coreXY_lower_tooth_colour(type) = type[8]; //! Colour of the lower belt's teeth
|
||||
|
||||
// used to offset the position of the drive pulley and the y-carriage plain idler pulley
|
||||
// relative to the anchor pulley so that the belts align properly
|
||||
function coreXY_drive_pulley_x_alignment(type) = //! Belt alignment offset of the drive pulley relative to the anchor pulley
|
||||
(pulley_od(coreXY_drive_pulley(type)) - pulley_od(coreXY_toothed_idler(type))) / 2;
|
||||
function coreXY_coincident_separation(type) = //! Value of x, y separation to make y-carriage pulleys coincident
|
||||
[ -coreXY_plain_idler_offset(type).x, -(pulley_od(coreXY_plain_idler(type)) + pulley_od(coreXY_toothed_idler(type)))/2, 0 ];
|
||||
function coreXY_plain_idler_offset(type) = //! Offset of y-carriage plain idler
|
||||
[ (pulley_od(coreXY_plain_idler(type)) + pulley_od(coreXY_drive_pulley(type))) / 2 + coreXY_drive_pulley_x_alignment(type), pulley_od(coreXY_plain_idler(type))/2, 0 ];
|
||||
function coreXY_toothed_idler_offset(type) = //! offset of y-carriage toothed idler
|
||||
[ 0, -pulley_pr(coreXY_toothed_idler(type)), 0 ];
|
||||
// helper functions for positioning idlers when the stepper motor drive pulley is offset
|
||||
function coreXY_drive_toothed_idler_offset(type) = //! Offset of toothed drive idler pulley
|
||||
[ 0, coreXY_drive_pulley_x_alignment(type), 0 ];
|
||||
function coreXY_drive_plain_idler_offset(type) = //! Offset of plain drive idler pulley
|
||||
[ coreXY_plain_idler_offset(type).x, -(pulley_od(coreXY_plain_idler(type)) + pulley_od(coreXY_drive_pulley(type))) / 2, 0 ];
|
||||
|
||||
|
||||
module coreXY_half(type, size, pos, separation_y = 0, x_gap = 0, plain_idler_offset = 0, drive_pulley_offset = [0, 0], show_pulleys = false, lower_belt = false, hflip = false) { //! Draw one belt of a coreXY setup
|
||||
|
||||
// y-carriage toothed pulley
|
||||
p0_type = coreXY_toothed_idler(type);
|
||||
p0 = [ size.x / 2, -size.y / 2 - pulley_od(p0_type) / 2 + pos.y - separation_y / 2 ];
|
||||
|
||||
// bottom right toothed idler pulley
|
||||
p1_type = p0_type;
|
||||
p1 = [ size.x / 2, -size.y / 2 ];
|
||||
|
||||
// bottom left anchor toothed idler pulley
|
||||
p2_type = p0_type;
|
||||
p2 = [ -size.x / 2, -size.y / 2 ];
|
||||
|
||||
// stepper motor drive pulley
|
||||
p3d_type = coreXY_drive_pulley(type);
|
||||
p3d = [ -size.x / 2 + coreXY_drive_pulley_x_alignment(type) + drive_pulley_offset.x,
|
||||
size.y / 2 + drive_pulley_offset.y
|
||||
];
|
||||
|
||||
// toothed idler for offset stepper motor drive pulley
|
||||
p3t_type = coreXY_toothed_idler(type);
|
||||
p3t = [ -size.x / 2 + (drive_pulley_offset.x > 0 ? 0 : 2*coreXY_drive_pulley_x_alignment(type)),
|
||||
size.y / 2 + coreXY_drive_pulley_x_alignment(type) + drive_pulley_offset.y
|
||||
];
|
||||
|
||||
// y-carriage plain pulley
|
||||
p4_type = coreXY_plain_idler(type);
|
||||
p4 = [ -size.x / 2 + pulley_od(p4_type) / 2 + pulley_od(p3d_type) / 2 + coreXY_drive_pulley_x_alignment(type) + plain_idler_offset,
|
||||
-size.y / 2 + pulley_od(p4_type) / 2 + pos.y + separation_y / 2
|
||||
];
|
||||
|
||||
// plain idler for offset stepper motor drive pulley
|
||||
p3p_type = p4_type;
|
||||
p3p = [ drive_pulley_offset.x > 0 ? p4.x : -p0.x - pulley_od(p0_type),
|
||||
size.y / 2 - pulley_od(p3p_type) / 2 - pulley_od(p3d_type) / 2 + drive_pulley_offset.y
|
||||
];
|
||||
|
||||
// dummy pulleys for y separation
|
||||
p5_type = p4_type;
|
||||
p5 = [ pos.x - size.x / 2, -size.y / 2 + pos.y + separation_y / 2 ];
|
||||
p6_type = p0_type;
|
||||
p6 = [ pos.x - size.x / 2, -size.y / 2 + pos.y - separation_y / 2 ];
|
||||
|
||||
module show_pulleys(show_pulleys) {// Allows the pulley colour to be set for debugging
|
||||
if (is_list(show_pulleys))
|
||||
color(show_pulleys)
|
||||
children();
|
||||
else if (show_pulleys)
|
||||
children();
|
||||
}
|
||||
|
||||
show_pulleys(show_pulleys) {
|
||||
translate(p0)
|
||||
pulley_assembly(p0_type); // y-carriage toothed pulley
|
||||
translate(p1)
|
||||
pulley_assembly(p1_type); // bottom right toothed idler pulley
|
||||
translate(p2)
|
||||
pulley_assembly(p2_type); // bottom left anchor toothed idler pulley
|
||||
translate(p3d)
|
||||
hflip(hflip)
|
||||
pulley_assembly(p3d_type); // top left stepper motor drive pulley
|
||||
if (drive_pulley_offset.x) { // idler pulleys for offset stepper motor drive pulley
|
||||
translate(p3t)
|
||||
pulley_assembly(p3t_type); // toothed idler
|
||||
translate(p3p)
|
||||
pulley_assembly(p3p_type); // plain idler
|
||||
}
|
||||
translate(p4)
|
||||
pulley_assembly(p4_type); // y-carriage plain pulley
|
||||
}
|
||||
|
||||
path0a = [
|
||||
[ p0.x, p0.y, pulley_od(p0_type) / 2 ],
|
||||
[ p1.x, p1.y, pulley_od(p1_type) / 2 ],
|
||||
[ p2.x, p2.y, pulley_od(p2_type) / 2 ]
|
||||
];
|
||||
path0b = [
|
||||
[ p3d.x, p3d.y, pulley_od(p3d_type) / 2 ],
|
||||
[ p4.x, p4.y, -pulley_od(p4_type) / 2 ]
|
||||
];
|
||||
path0c = [
|
||||
[ p3t.x, p3t.y, pulley_od(p3t_type) / 2 ],
|
||||
[ p3d.x, p3d.y, pulley_od(p3d_type) / 2 ],
|
||||
[ p3p.x, p3p.y, -pulley_od(p3p_type) / 2 ],
|
||||
[ p4.x, p4.y, -pulley_od(p4_type) / 2 ]
|
||||
];
|
||||
path0d = [
|
||||
[ p3p.x, p3p.y, -pulley_od(p3p_type) / 2 ],
|
||||
[ p3d.x, p3d.y, pulley_od(p3d_type) / 2 ],
|
||||
[ p3t.x, p3t.y, pulley_od(p3t_type) / 2 ],
|
||||
[ p4.x, p4.y, -pulley_od(p4_type) / 2 ]
|
||||
];
|
||||
path1 = [ // use eps for corner radius to get sharp corners so this part of the belt is deleted by the gap
|
||||
[ p5.x, p5.y, eps ],
|
||||
[ p6.x, p6.y, eps ]
|
||||
];
|
||||
|
||||
belt = coreXY_belt(type);
|
||||
|
||||
path0 = drive_pulley_offset.x == 0 ? concat(path0a, path0b) : drive_pulley_offset.x > 0 ? concat(path0a, path0c) : concat(path0a, path0d);
|
||||
path = separation_y == 0 ? path0 : concat(path0, path1);
|
||||
|
||||
belt(type = belt,
|
||||
points = path,
|
||||
gap = [ x_gap + eps, abs(separation_y) + 2 ],
|
||||
gap_pos = [ pos.x - size.x / 2, pos.y - size.y / 2 + belt_pitch_height(belt) - belt_thickness(belt) / 2 ],
|
||||
belt_colour = lower_belt ? coreXY_lower_belt_colour(type) : coreXY_upper_belt_colour(type),
|
||||
tooth_colour = lower_belt ? coreXY_lower_tooth_colour(type) : coreXY_upper_tooth_colour(type));
|
||||
}
|
||||
|
||||
module coreXY(type, size, pos, separation, x_gap, plain_idler_offset = 0, upper_drive_pulley_offset, lower_drive_pulley_offset, show_pulleys = false) { //! Wrapper module to draw both belts of a coreXY setup
|
||||
translate([size.x / 2 - separation.x / 2, size.y / 2, -separation.z / 2]) {
|
||||
// lower belt
|
||||
hflip()
|
||||
explode(25)
|
||||
coreXY_half(type, size, [size.x - pos.x - separation.x, pos.y], separation.y, x_gap, plain_idler_offset, [-lower_drive_pulley_offset.x, lower_drive_pulley_offset.y], show_pulleys, lower_belt = true, hflip = true);
|
||||
// upper belt
|
||||
translate([separation.x, 0, separation.z])
|
||||
explode(25)
|
||||
coreXY_half(type, size, [pos.x, pos.y], separation.y, x_gap, plain_idler_offset, upper_drive_pulley_offset, show_pulleys, lower_belt = false, hflip=false);
|
||||
}
|
||||
}
|
||||
|
||||
module coreXY_belts(type, carriagePosition, coreXYPosBL, coreXYPosTR, separation, x_gap = 20, upper_drive_pulley_offset = [0, 0], lower_drive_pulley_offset = [0, 0], show_pulleys = false) { //! Draw the coreXY belts
|
||||
assert(coreXYPosBL.z == coreXYPosTR.z);
|
||||
|
||||
coreXYSize = coreXYPosTR - coreXYPosBL;
|
||||
translate(coreXYPosBL)
|
||||
coreXY(type, coreXYSize, [carriagePosition.x - coreXYPosBL.x + separation.x / 2, carriagePosition.y - coreXYPosBL.y], separation = separation, x_gap = x_gap, plain_idler_offset = 0, upper_drive_pulley_offset = upper_drive_pulley_offset, lower_drive_pulley_offset = lower_drive_pulley_offset, show_pulleys = show_pulleys);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user