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Loading, unloading and cooling reworked, new filament parameters regarding cooling were added

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Lukas Matena 2018-04-24 13:02:08 +02:00
parent a154fd34ee
commit 8c77b9645c
7 changed files with 99 additions and 73 deletions
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101
xs/src/libslic3r/GCode/WipeTowerPrusaMM.cpp
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@ -219,6 +219,17 @@ public:
Writer& retract(float e, float f = 0.f)
{ return load(-e, f); }
// Loads filament while also moving towards given points in x-axis (x feedrate is limited by cutting the distance short if necessary)
Writer& load_move_x_advanced(float farthest_x, float loading_dist, float loading_speed, float max_x_speed = 50.f)
{
float time = std::abs(loading_dist / loading_speed);
float x_speed = std::min(max_x_speed, std::abs(farthest_x - x()) / time);
float feedrate = 60.f * std::hypot(x_speed, loading_speed);
float end_point = x() + (farthest_x > x() ? 1.f : -1.f) * x_speed * time;
return extrude_explicit(end_point, y(), loading_dist, feedrate);
}
// Elevate the extruder head above the current print_z position.
Writer& z_hop(float hop, float f = 0.f)
{
@ -786,58 +797,43 @@ void WipeTowerPrusaMM::toolchange_Unload(
}
WipeTower::xy end_of_ramming(writer.x(),writer.y());
// Pull the filament end to the BEGINNING of the cooling tube while still moving the print head
float oldx = writer.x();
float turning_point = (!m_left_to_right ? std::max(xl,oldx-15.f) : std::min(xr,oldx+15.f) ); // so it's not too far
float xdist = std::abs(oldx-turning_point);
float edist = -(m_cooling_tube_retraction+m_cooling_tube_length/2.f-42);
// Retraction:
float old_x = writer.x();
float turning_point = (!m_left_to_right ? xl : xr );
float total_retraction_distance = m_cooling_tube_retraction + m_cooling_tube_length/2.f - 15.f; // the 15mm is reserved for the first part after ramming
writer.suppress_preview()
.load_move_x(turning_point,-15 , 60.f * std::hypot(xdist,15)/15 * 83 ); // fixed speed after ramming
// now an ugly hack: unload the filament with a check that the x speed is 50 mm/s
const float speed = m_filpar[m_current_tool].unloading_speed;
xdist = std::min(xdist, std::abs( 50 * edist / speed ));
const float feedrate = std::abs( std::hypot(edist, xdist) / ((edist / speed) / 60.f));
writer.load_move_x(writer.x() + (m_left_to_right ? -1.f : 1.f) * xdist ,edist, feedrate );
xdist = std::abs(oldx-turning_point); // recover old value of xdist
writer.load_move_x(turning_point,-15 , 60.f * std::hypot(xdist,15)/15 * m_filpar[m_current_tool].unloading_speed*0.55f )
.load_move_x(oldx ,-12 , 60.f * std::hypot(xdist,12)/12 * m_filpar[m_current_tool].unloading_speed*0.35f )
.load_move_x_advanced(turning_point, -15.f, 83.f, 50.f) // this is done at fixed speed
.load_move_x_advanced(old_x, -0.70f * total_retraction_distance, 1.0f * m_filpar[m_current_tool].unloading_speed)
.load_move_x_advanced(turning_point, -0.20f * total_retraction_distance, 0.5f * m_filpar[m_current_tool].unloading_speed)
.load_move_x_advanced(old_x, -0.10f * total_retraction_distance, 0.3f * m_filpar[m_current_tool].unloading_speed)
.travel(old_x, writer.y()) // in case previous move was shortened to limit feedrate
.resume_preview();
if (new_temperature != 0) // Set the extruder temperature, but don't wait.
if (new_temperature != 0) // Set the extruder temperature, but don't wait.
writer.set_extruder_temp(new_temperature, false);
// cooling:
writer.suppress_preview();
writer.travel(writer.x(), writer.y() + y_step);
const float start_x = writer.x();
turning_point = ( xr-start_x > start_x-xl ? xr : xl );
const float max_x_dist = 2*std::abs(start_x-turning_point);
const unsigned int N = 4 + std::max(0.f, (m_filpar[m_current_tool].cooling_time-14)/3);
float time = m_filpar[m_current_tool].cooling_time / float(N);
// Cooling:
const unsigned number_of_moves = 3;
if (number_of_moves > 0) {
const float initial_speed = 2.2f; // mm/s
const float final_speed = 3.4f;
i = 0;
while (i<N) {
const float speed = std::min(3.4,2.2 + i*0.3 + (i==0 ? 0 : 0.3)); // mm per second: 2.2, 2.8, 3.1, 3.4, 3.4, 3.4, ...
const float e_dist = std::min(speed * time,2*m_cooling_tube_length); // distance to travel
// this move is the last one at this speed or someone set tube_length to zero
if (speed * time < 2*m_cooling_tube_length || m_cooling_tube_length<WT_EPSILON) {
++i;
time = m_filpar[m_current_tool].cooling_time / float(N);
}
else
time -= e_dist / speed; // subtract time this part will really take
float speed_inc = (final_speed - initial_speed) / (2.f * number_of_moves - 1.f);
// as for x, we will make sure the feedrate is at most 2000
float x_dist = (turning_point - WT_EPSILON < xl ? -1.f : 1.f) * std::min(e_dist * (float)sqrt(pow(2000 / (60 * speed), 2) - 1),max_x_dist);
const float feedrate = std::hypot(e_dist, x_dist) / ((e_dist / speed) / 60.f);
writer.cool(start_x+x_dist/2.f,start_x,e_dist/2.f,-e_dist/2.f, feedrate);
}
writer.suppress_preview()
.travel(writer.x(), writer.y() + y_step);
old_x = writer.x();
turning_point = xr-old_x > old_x-xl ? xr : xl;
for (unsigned i=0; i<number_of_moves; ++i) {
float speed = initial_speed + speed_inc * 2*i;
writer.load_move_x_advanced(turning_point, m_cooling_tube_length, speed);
speed += speed_inc;
writer.load_move_x_advanced(old_x, -m_cooling_tube_length, speed);
}
}
// let's wait is necessary
// let's wait is necessary:
writer.wait(m_filpar[m_current_tool].delay);
// we should be at the beginning of the cooling tube again - let's move to parking position:
writer.retract(-m_cooling_tube_length/2.f+m_parking_pos_retraction-m_cooling_tube_retraction, 2000);
@ -881,17 +877,16 @@ void WipeTowerPrusaMM::toolchange_Load(
float oldx = writer.x(); // the nozzle is in place to do the first wiping moves, we will remember the position
// Load the filament while moving left / right, so the excess material will not create a blob at a single position.
float loading_speed = m_filpar[m_current_tool].loading_speed; // mm/s in e axis
float turning_point = ( oldx-xl < xr-oldx ? xr : xl );
float dist = std::abs(oldx-turning_point);
//float edist = m_parking_pos_retraction-50-2; // loading is 2mm shorter that previous retraction, 50mm reserved for acceleration/deceleration
float edist = m_parking_pos_retraction-50+m_extra_loading_move; // 50mm reserved for acceleration/deceleration
writer.append("; CP TOOLCHANGE LOAD\n")
float edist = m_parking_pos_retraction+m_extra_loading_move;
writer.append("; CP TOOLCHANGE LOAD\n")
.suppress_preview()
.load_move_x(turning_point, 20, 60*std::hypot(dist,20.f)/20.f * loading_speed*0.3f) // Acceleration
.load_move_x(oldx,edist,std::abs( 60*std::hypot(dist,edist)/edist * loading_speed) ) // Fast phase
.load_move_x(turning_point, 20, 60*std::hypot(dist,20.f)/20.f * loading_speed*0.3f) // Slowing down
.load_move_x(oldx, 10, 60*std::hypot(dist,10.f)/10.f * loading_speed*0.1f) // Super slow
.load_move_x_advanced(turning_point, 0.2f * edist, 0.3f * m_filpar[m_current_tool].loading_speed) // Acceleration
.load_move_x_advanced(oldx, 0.5f * edist, m_filpar[m_current_tool].loading_speed) // Fast phase
.load_move_x_advanced(turning_point, 0.2f * edist, 0.3f * m_filpar[m_current_tool].loading_speed) // Slowing down
.load_move_x_advanced(oldx, 0.1f * edist, 0.1f * m_filpar[m_current_tool].loading_speed) // Super slow
.travel(oldx, writer.y()) // in case last move was shortened to limit x feedrate
.resume_preview();
// Reset the extruder current to the normal value.