🤖 Robot for Pick and Place: Speed, precision and zero fatigue

Introduction: The most boring jobs in manufacturing

It exists on every production line. It's the most basic, most monotonous, and least popular job of all: Take a part from point A. Move it. Put it down at point B. Again. And again. Five thousand times a shift.

This simple process is called “Pick and Place” in the industry. And while it’s simple, it’s the source of huge problems – fatigue, error rates, fluctuating speed, and unhappy employees.

The solution is a robot. Pick and Place is the most common robotic application and the gateway to the world of automation. It is the foundation from which everything else is based - CNC machine operation, precision assembly and packaging.

Main Section: Human Fatigue vs. Robotic Consistency

The problem called "monotonicity"

Why automate such a "simple" task? Because humans are not machines.

Fatigue error rate: After two hours of monotonous movement, attention decreases. The operator reaches to the side, takes two parts at once, or inserts a part upside down. The result? A stopped line or a customer's scrap.

Fluctuating speed: The person needs breaks, their pace naturally slows down during the shift. The line's beat is inconsistent.

High turnover: No one wants to do this job long-term. It's exhausting, leading to high employee turnover.

Risk of injury (RSI): Constantly repeating the same movement leads to repetitive strain injury (e.g. carpal tunnel).

How does a “Pick and Place” robotic cell work?

It is an elegantly simple kit that consists of 3 key components:

• 1. Arm (Hand) It is a collaborative robot (cobot). Its only task is to move quickly and accurately between points A and B. It doesn't have to think, it just executes commands.
• 2. Gripper (Fingers) At the end of the arm is the tool that grips the part. This is the key part.

  For flat parts (electronics, glass, lids): A vacuum gripper (suction cup) is used.

  For components (cubes, castings): A two-finger electric gripper is used.

• 3. Eyes (Camera System) – Where the bread breaks This is where "dumb" and "smart" automation are divided:

  Option A: Without a camera (Dumb robot) The robot is blind. It expects the part to ALWAYS be in exactly the same place (e.g. in an expensive fixture or blister). As soon as the part is a millimeter off, the robot reaches into the void and the line stops.

  Variant B: With 2D camera (Smart robot) A simple 2D camera is placed above the conveyor or crate. It "looks" at the part, determines its exact position (X, Y) and rotation. It sends these coordinates to the robot, which actively reaches for the part, even if it lies slightly differently each time. This is flexible and robust automation.

Benefits? Immediate

• Absolute precision: The robot has repeatable accuracy in the order of hundredths of a millimeter. It always hits the target.
• Consistent speed: The robot runs at the same pace 24 hours a day, 7 days a week. The entire line suddenly becomes predictable.
• Zero error rate: The robot never gets tired. It never inserts a part upside down (if it has a camera) and it never "forgets".
• Freeing up people: You can move an employee who was doing monotonous work to more skilled tasks – quality control or adjustment.

Recommended solutions for "Pick and Place"

Small and medium-sized robot arms and universal grippers are ideal for fast and precise movement.

• Dobot CR5: With a repeatable accuracy of ±0.02 mm and an excellent price-performance ratio, it is the ideal choice for a first Pick & Place cell, for example in electronics assembly.
• Universal Robots UR3e: The "surgeon" among cobots. Extremely precise and flexible, ideal for complex Pick & Place tasks in small spaces.
• OnRobot RG2 / RG6: The most popular electric grippers. They are versatile, easy to program, and reliable for gripping a wide range of parts.
• OnRobot VGC10 (Vacuum Gripper): A compact vacuum gripper that is perfect for lifting flat, lightweight objects (lids, bags, circuit boards).

Frequently asked questions about Pick and Place

• 1. Do I have to be a programmer to teach the robot a new point? No. With collaborative robots (UR, Dobot) it works much easier. You press a button, manually guide the arm to a new position (point A) and save it. Then you guide it to point B and save it. That's it.
• 2. Do the parts always have to be perfectly aligned? They don't have to if you use a camera system (machine vision). That's the power of modern automation. The camera finds the part and the robot adapts.
• 3. How fast is such a robot? Very fast. A typical Pick & Place cycle (grab, move 50 cm, place, return) ranges from 3 to 7 seconds, depending on the weight of the part.

Conclusion: The fundamental building block of your factory

Pick and Place may be simple, but it is a fundamental building block of Industry 4.0. It solves the most pressing problem: the lack of people willing to do monotonous work. By automating this "boring" work, you gain speed, 100% quality and happier employees.

Do you want to speed up your line and put an end to fatigue errors? Visit svet-robotu.cz and discover the components from which you can build your first Pick & Place cell.