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29 changes: 13 additions & 16 deletions docs/man/man9/lineardeltakins.9
Original file line number Diff line number Diff line change
Expand Up @@ -9,34 +9,31 @@ lineardeltakins \- Kinematics for a linear delta robot

.SH KINEMATICS
The kinematics model is appropriate for a rostock/kossel-style design
with three joints arranged in an equilateral triangle. (0,0) is always
the center of the working volume. Joint 0 is at (0,R) and subsequent
joints are 120 degrees clockwise (note that joint 0 is not at zero
radians). The length of the arm is L.
with three joints arranged in an equilateral triangle.
(0,0) is always the center of the working volume.
Joint 0 is at (0,R) and subsequent joints are 120 degrees clockwise (note that joint 0 is not at zero radians).
The length of the arm is L.

Joints 0-2 are the linear carriages. Axes ABC and UVW are passed
through unchanged in joints 3-8, so that e.g., A can still be used to
control an extruder.
Joints 0-2 are the linear carriages.
Axes ABC and UVW are passed through unchanged in joints 3-8, so that e.g., A can still be used to control an extruder.

.SH PINS
.TP
.B lineardeltakins.R\fR float in
Effective diameter of the platform.

R is different than the distance from the center of the table to the
center of the belt/smooth rod/extrusion that the joints ride on. In
RepRap delta parlance, R is DELTA_RADIUS which is computed as
R is different than the distance from the center of the table to the center of the belt/smooth rod/extrusion that the joints ride on.
In RepRap delta parlance, R is DELTA_RADIUS which is computed as

DELTA_SMOOTH_ROD_OFFSET - DELTA_EFFECTOR_OFFSET - DELTA_CARRIAGE_OFFSET.

.TP
.B lineardeltakins.L\fR float in
Length of the rod connecting the carriage to the effector. In RepRap
delta parlance, L is DELTA_DIAGONAL_ROD
Length of the rod connecting the carriage to the effector.
In RepRap delta parlance, L is DELTA_DIAGONAL_ROD.

.SH NOTES
The R and L values can be adjusted while LinuxCNC is running. However,
doing so while in coordinated mode will lead to a step change in joint
position, which generally will trigger a following error if in joint
mode with machine on.
The R and L values can be adjusted while LinuxCNC is running.
However, doing so while in coordinated mode will lead to a step change in joint position,
which generally will trigger a following error if in joint mode with machine on.

2 changes: 1 addition & 1 deletion docs/src/gui/qtvcp-libraries.adoc
Original file line number Diff line number Diff line change
Expand Up @@ -452,7 +452,7 @@ NOTE: This also *requires remap code to add the wear offsets t tool change time*
*`PATH.WORKINGDIR`*::
The directory QtVCP was launched from.
*`PATH.IS_SCREEN`*::
Is this a screen or a VCP ?
Is this a screen or a VCP?
*`PATH.CONFIGPATH`*::
Launched configuration folder.
*`PATH.RIPCONFIGDIR`*::
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