SACA Industrial Robot Operations 2

Question 1

What are the degrees of freedom (DOF) of a standard 6-axis industrial robot, and what does each axis typically control?

Accepted Answer

6 DOF: 3 for position (X,Y,Z) and 3 for orientation (roll, pitch, yaw) — enabling the TCP to reach any point in space at any angle

Answer

6 DOF: 3 for speed control, 2 for grip force, 1 for tool rotation

Answer

6 DOF: all 6 control position only, not orientation, providing redundant positioning accuracy

Answer

6 DOF: 4 for arm movement and 2 for a two-finger parallel gripper

Question 2

What is 'tool change' capability in industrial robotics, and what device enables automatic tool switching?

Accepted Answer

An automatic tool changer (ATC) — a mechanism allowing the robot to exchange end-effectors from a rack without human intervention

Answer

A manual process where operators physically unscrew tools between jobs, guided by the robot's teach pendant

Answer

A software function that changes the active robot program when a different part arrives on the conveyor

Answer

A robotic gripper with adjustable finger spacing controlled by a servo motor

Question 3

In robot programming, what is the difference between 'MOVJ' (joint motion) and 'MOVC' (circular motion)?

Accepted Answer

MOVJ moves the TCP along the shortest joint-space path (curved in Cartesian); MOVC moves the TCP along a circular arc through three defined points

Answer

MOVJ moves individual joints; MOVC moves the entire robot body in a coordinated circle

Answer

MOVJ is faster; MOVC is used only for painting applications

Answer

MOVJ uses absolute coordinates; MOVC uses incremental offsets from the current position

Question 4

What is a 'safety-rated monitored stop' in collaborative robot applications?

Accepted Answer

A robot safety function that monitors for human presence and commands the robot to stop and hold position if a person enters the collaborative workspace

Answer

An emergency stop button that a human can press to halt the robot from any location in the cell

Answer

A robot speed monitoring function that reduces speed if temperature sensors detect overheating

Answer

A software function that prevents the robot from executing the next program step until a quality check passes

Question 5

What is 'palletizing' in industrial robotics and what robot configuration is typically preferred for this task?

Accepted Answer

Stacking products onto pallets in defined layer patterns; preferred robot: high-payload, large-reach articulated robot or dedicated palletizing robot (4-axis)

Answer

The process of painting metal pallets before they enter the production line; preferred robot: painting robot with hollow wrist

Answer

Scanning pallet barcodes for warehouse inventory tracking; preferred robot: SCARA with camera mount

Answer

Transporting pallets between production zones using an AMR-mounted robot arm

Question 6

What is 'robot vision guidance' and how does a 2D vision system determine part position for picking?

Accepted Answer

A camera captures an image of the workspace; blob analysis or pattern matching algorithms locate the part's centroid and angle, which are transformed to robot coordinates for picking

Answer

Vision guidance uses a camera to verify product quality; position is determined by comparing to a stored golden image

Answer

Vision guidance records the path the robot taught pendant operator traces manually, then replays it

Answer

A stereo camera system measures part height to determine grip force for fragile components