diff --git a/src/Mod/Robot/Gui/TaskDlgSimulate.cpp b/src/Mod/Robot/Gui/TaskDlgSimulate.cpp
index 79871a59f7..a24bea02af 100644
--- a/src/Mod/Robot/Gui/TaskDlgSimulate.cpp
+++ b/src/Mod/Robot/Gui/TaskDlgSimulate.cpp
@@ -37,14 +37,11 @@ TaskDlgSimulate::TaskDlgSimulate(Robot::RobotObject *pcRobotObject,Robot::Trajec
 {
     rob  = new TaskRobot6Axis(pcRobotObject);
     ctr  = new TaskRobotControl(pcRobotObject);
-    
+
     trac = new TaskTrajectory(pcRobotObject,pcTrajectoryObject);
     msg  = new TaskRobotMessages(pcRobotObject);
-    
-    
-    QObject::connect(
-        trac, SIGNAL(axisChanged(float, float, float, float, float, float, const Base::Placement&)),
-        rob, SLOT(setAxis(float, float, float, float, float, float, const Base::Placement&)));
+
+    QObject::connect(trac, &TaskTrajectory::axisChanged, rob, &TaskRobot6Axis::setAxis);
 
     Content.push_back(rob);
     Content.push_back(ctr);
diff --git a/src/Mod/Robot/Gui/TaskEdge2TracParameter.cpp b/src/Mod/Robot/Gui/TaskEdge2TracParameter.cpp
index 0a97695656..42e78fccab 100644
--- a/src/Mod/Robot/Gui/TaskEdge2TracParameter.cpp
+++ b/src/Mod/Robot/Gui/TaskEdge2TracParameter.cpp
@@ -53,9 +53,11 @@ TaskEdge2TracParameter::TaskEdge2TracParameter(Robot::Edge2TracObject *pcObject,
 
     this->groupLayout()->addWidget(proxy);
 
-    QObject::connect(ui->pushButton_HideShow,SIGNAL(clicked()),this,SLOT(hideShow()));
-    QObject::connect(ui->doubleSpinBoxSizing,SIGNAL(valueChanged (double)),this,SLOT(sizingValueChanged(double)));
-    QObject::connect(ui->checkBoxOrientation,SIGNAL(toggled  (bool)),this,SLOT(orientationToggled(bool)));
+    QObject::connect(ui->pushButton_HideShow, &QPushButton::clicked, this, &TaskEdge2TracParameter::hideShow);
+    QObject::connect(ui->doubleSpinBoxSizing, qOverload<double>(&QDoubleSpinBox::valueChanged),
+                     this, &TaskEdge2TracParameter::sizingValueChanged);
+    QObject::connect(ui->checkBoxOrientation, &QCheckBox::toggled,
+                     this, &TaskEdge2TracParameter::orientationToggled);
 
     setHideShowObject();
 
diff --git a/src/Mod/Robot/Gui/TaskRobot6Axis.cpp b/src/Mod/Robot/Gui/TaskRobot6Axis.cpp
index 5aee5c7457..1acf5d16bc 100644
--- a/src/Mod/Robot/Gui/TaskRobot6Axis.cpp
+++ b/src/Mod/Robot/Gui/TaskRobot6Axis.cpp
@@ -49,17 +49,17 @@ TaskRobot6Axis::TaskRobot6Axis(Robot::RobotObject *pcRobotObject,QWidget *parent
 
     this->groupLayout()->addWidget(proxy);
 
-    QObject::connect(ui->horizontalSlider_Axis1,SIGNAL(sliderMoved(int)),this,SLOT(changeSliderA1(int)));
-    QObject::connect(ui->horizontalSlider_Axis2,SIGNAL(sliderMoved(int)),this,SLOT(changeSliderA2(int)));
-    QObject::connect(ui->horizontalSlider_Axis3,SIGNAL(sliderMoved(int)),this,SLOT(changeSliderA3(int)));
-    QObject::connect(ui->horizontalSlider_Axis4,SIGNAL(sliderMoved(int)),this,SLOT(changeSliderA4(int)));
-    QObject::connect(ui->horizontalSlider_Axis5,SIGNAL(sliderMoved(int)),this,SLOT(changeSliderA5(int)));
-    QObject::connect(ui->horizontalSlider_Axis6,SIGNAL(sliderMoved(int)),this,SLOT(changeSliderA6(int)));
+    QObject::connect(ui->horizontalSlider_Axis1, &QSlider::sliderMoved, this, &TaskRobot6Axis::changeSliderA1);
+    QObject::connect(ui->horizontalSlider_Axis2, &QSlider::sliderMoved, this, &TaskRobot6Axis::changeSliderA2);
+    QObject::connect(ui->horizontalSlider_Axis3, &QSlider::sliderMoved, this, &TaskRobot6Axis::changeSliderA3);
+    QObject::connect(ui->horizontalSlider_Axis4, &QSlider::sliderMoved, this, &TaskRobot6Axis::changeSliderA4);
+    QObject::connect(ui->horizontalSlider_Axis5, &QSlider::sliderMoved, this, &TaskRobot6Axis::changeSliderA5);
+    QObject::connect(ui->horizontalSlider_Axis6, &QSlider::sliderMoved, this, &TaskRobot6Axis::changeSliderA6);
+    QObject::connect(ui->pushButtonChooseTool, &QPushButton::clicked, this, &TaskRobot6Axis::createPlacementDlg);
 
-    QObject::connect(ui->pushButtonChooseTool,SIGNAL(clicked()),this,SLOT(createPlacementDlg()));
-
-    if(pcRobotObject)
+    if (pcRobotObject) {
         setRobot(pcRobotObject);
+    }
 }
 
 TaskRobot6Axis::~TaskRobot6Axis()
diff --git a/src/Mod/Robot/Gui/TaskRobot6Axis.h b/src/Mod/Robot/Gui/TaskRobot6Axis.h
index dfe71800a8..b47067cfef 100644
--- a/src/Mod/Robot/Gui/TaskRobot6Axis.h
+++ b/src/Mod/Robot/Gui/TaskRobot6Axis.h
@@ -52,7 +52,7 @@ public:
 
     void setRobot(Robot::RobotObject *pcRobotObject);
 
-private Q_SLOTS:
+public Q_SLOTS:
     void setAxis(float A1,float A2,float A3,float A4,float A5,float A6,const Base::Placement &Tcp);
     void changeSliderA1(int value);
     void changeSliderA2(int value);
diff --git a/src/Mod/Robot/Gui/TaskTrajectory.cpp b/src/Mod/Robot/Gui/TaskTrajectory.cpp
index 1035e27a05..f052535545 100644
--- a/src/Mod/Robot/Gui/TaskTrajectory.cpp
+++ b/src/Mod/Robot/Gui/TaskTrajectory.cpp
@@ -78,21 +78,23 @@ TaskTrajectory::TaskTrajectory(Robot::RobotObject *pcRobotObject,Robot::Trajecto
 
     }
 
-    QObject::connect(ui->ButtonStepStart    ,SIGNAL(clicked()),this,SLOT(start()));
-    QObject::connect(ui->ButtonStepStop     ,SIGNAL(clicked()),this,SLOT(stop()));
-    QObject::connect(ui->ButtonStepRun      ,SIGNAL(clicked()),this,SLOT(run()));
-    QObject::connect(ui->ButtonStepBack     ,SIGNAL(clicked()),this,SLOT(back()));
-    QObject::connect(ui->ButtonStepForward  ,SIGNAL(clicked()),this,SLOT(forward()));
-    QObject::connect(ui->ButtonStepEnd      ,SIGNAL(clicked()),this,SLOT(end()));
+    QObject::connect(ui->ButtonStepStart    , &QPushButton::clicked, this, &TaskTrajectory::start);
+    QObject::connect(ui->ButtonStepStop     , &QPushButton::clicked, this, &TaskTrajectory::stop);
+    QObject::connect(ui->ButtonStepRun      , &QPushButton::clicked, this, &TaskTrajectory::run);
+    QObject::connect(ui->ButtonStepBack     , &QPushButton::clicked, this, &TaskTrajectory::back);
+    QObject::connect(ui->ButtonStepForward  , &QPushButton::clicked, this, &TaskTrajectory::forward);
+    QObject::connect(ui->ButtonStepEnd      , &QPushButton::clicked, this, &TaskTrajectory::end);
 
 
     // set up timer
     timer = new QTimer( this );
     timer->setInterval(100);
-    QObject::connect(timer      ,SIGNAL(timeout ()),this,SLOT(timerDone()));
+    QObject::connect(timer, &QTimer::timeout, this, &TaskTrajectory::timerDone);
 
-    QObject::connect( ui->timeSpinBox       ,SIGNAL(valueChanged(double)), this, SLOT(valueChanged(double)) );
-    QObject::connect( ui->timeSlider        ,SIGNAL(valueChanged(int)   ), this, SLOT(valueChanged(int)) );
+    QObject::connect(ui->timeSpinBox, qOverload<double>(&QDoubleSpinBox::valueChanged),
+                     this, qOverload<double>(&TaskTrajectory::valueChanged));
+    QObject::connect(ui->timeSlider, qOverload<int>(&QSlider::valueChanged),
+                     this, qOverload<int>(&TaskTrajectory::valueChanged));
 
     // get the view provider
     ViewProv = dynamic_cast<ViewProviderRobotObject*>(Gui::Application::Instance->activeDocument()->getViewProvider(pcRobotObject) );
diff --git a/src/Mod/Robot/Gui/TaskTrajectoryDressUpParameter.cpp b/src/Mod/Robot/Gui/TaskTrajectoryDressUpParameter.cpp
index f7b4d5562b..ac87760151 100644
--- a/src/Mod/Robot/Gui/TaskTrajectoryDressUpParameter.cpp
+++ b/src/Mod/Robot/Gui/TaskTrajectoryDressUpParameter.cpp
@@ -62,7 +62,8 @@ TaskTrajectoryDressUpParameter::TaskTrajectoryDressUpParameter(Robot::Trajectory
     PosAdd = pcObject->PosAdd.getValue();
     viewPlacement();
 
-    QObject::connect(ui->toolButtonChoosePlacement,SIGNAL(clicked()),this,SLOT(createPlacementDlg()));
+    QObject::connect(ui->toolButtonChoosePlacement, &QToolButton::clicked,
+                     this, &TaskTrajectoryDressUpParameter::createPlacementDlg);
 
 }
 
diff --git a/src/Mod/Robot/Gui/TrajectorySimulate.cpp b/src/Mod/Robot/Gui/TrajectorySimulate.cpp
index 1a13a0b144..96fdef6b74 100644
--- a/src/Mod/Robot/Gui/TrajectorySimulate.cpp
+++ b/src/Mod/Robot/Gui/TrajectorySimulate.cpp
@@ -76,20 +76,21 @@ TrajectorySimulate::TrajectorySimulate(Robot::RobotObject *pcRobotObject,Robot::
 
     }
 
-    QObject::connect(ui->ButtonStepStart, SIGNAL(clicked()), this, SLOT(start()));
-    QObject::connect(ui->ButtonStepStop, SIGNAL(clicked()), this, SLOT(stop()));
-    QObject::connect(ui->ButtonStepRun, SIGNAL(clicked()), this, SLOT(run()));
-    QObject::connect(ui->ButtonStepBack, SIGNAL(clicked()), this, SLOT(back()));
-    QObject::connect(ui->ButtonStepForward, SIGNAL(clicked()), this, SLOT(forward()));
-    QObject::connect(ui->ButtonStepEnd, SIGNAL(clicked()), this, SLOT(end()));
+    QObject::connect(ui->ButtonStepStart, &QPushButton::clicked, this, &TrajectorySimulate::start);
+    QObject::connect(ui->ButtonStepStop, &QPushButton::clicked, this, &TrajectorySimulate::stop);
+    QObject::connect(ui->ButtonStepRun, &QPushButton::clicked, this, &TrajectorySimulate::run);
+    QObject::connect(ui->ButtonStepBack, &QPushButton::clicked, this, &TrajectorySimulate::back);
+    QObject::connect(ui->ButtonStepForward, &QPushButton::clicked, this, &TrajectorySimulate::forward);
+    QObject::connect(ui->ButtonStepEnd, &QPushButton::clicked, this, &TrajectorySimulate::end);
 
     // set up timer
     timer = new QTimer(this);
     timer->setInterval(100);
-    QObject::connect(timer, SIGNAL(timeout()), this, SLOT(timerDone()));
-    QObject::connect(ui->timeSpinBox, SIGNAL(valueChanged(double)), this,
-                     SLOT(valueChanged(double)));
-    QObject::connect(ui->timeSlider, SIGNAL(valueChanged(int)), this, SLOT(valueChanged(int)));
+    QObject::connect(timer, &QTimer::timeout, this, &TrajectorySimulate::timerDone);
+    QObject::connect(ui->timeSpinBox, qOverload<double>(&QDoubleSpinBox::valueChanged),
+                     this, qOverload<double>(&TrajectorySimulate::valueChanged));
+    QObject::connect(ui->timeSlider, qOverload<int>(&QSlider::valueChanged),
+                     this, qOverload<int>(&TrajectorySimulate::valueChanged));
 
     // get the view provider
     ViewProv = static_cast<ViewProviderRobotObject*>(Gui::Application::Instance->activeDocument()->getViewProvider(pcRobotObject) );