time motion study

Summary

The video demonstrates a time and motion study where the task is to assemble a hex bolt with washers and a nut. Initially, it takes 1 minute and 44 seconds to assemble 10 units without a structured approach. After creating a fixture, sorting the parts, and using both hands, the assembly time is reduced to 58.31 seconds. The experiment highlights the efficiency gained through organization and methodical assembly techniques.

Takeaways

• 🔧 Conducting a time-motion study on an assembly process.
• 📦 Assembling a unit consisting of a hex bolt, flat washer, lock washer, and quarter-inch nut.
• 🔄 The goal is to create ten assemblies with mixed-up parts.
• ⏱️ Using a stopwatch to measure the assembly time.
• 🤔 The trick is to avoid rushing and not let someone know they're being watched.
• 🛠️ The initial assembly of ten units took 1 minute and 44 seconds.
• 🔨 Introducing a fixture and sorting parts by type for efficiency.
• 👷 Placing the bolt in the fixture and assembling using both hands.
• ⚡ Reduced assembly time to 58.31 seconds with the new method.
• 📉 Improvement achieved by adding a fixture, sorting parts, and using both hands.

Q & A

What is the purpose of the time and motion study described in the transcript?

The purpose is to measure the time it takes to assemble a specific assembly, consisting of a quarter head hex nut, hex bolt, flat washer, lock washer, and a quarter inch nut.

How many assemblies are being made in the study?

Ten assemblies are being made in the study.

What components are used in the assembly?

The components used are a quarter head hex nut, hex bolt, flat washer, lock washer, and a quarter inch nut.

What is the initial total time recorded for assembling the ten assemblies?

The initial total time recorded is 1 minute and 44 seconds (144.03 seconds).

What change is made in the second part of the experiment?

In the second part of the experiment, a fixture is made, parts are sorted out by type, and both hands are used for assembly.

What is the result of the second part of the experiment in terms of time?

The time is reduced to 58.31 seconds for assembling the ten assemblies.

How is the stopwatch used in the study?

The stopwatch is used to measure the time taken to assemble the parts. It is started at the beginning of the assembly and stopped once the assembly is completed.

What does the experiment aim to demonstrate?

The experiment aims to demonstrate the efficiency gains from using a fixture, sorting parts, and using both hands during assembly.

Why might the experiment suggest not letting someone know they are being watched?

Not letting someone know they are being watched might help them work at their natural pace without feeling pressured, providing more accurate data on the time required for the task.

What is the significance of sorting the parts by type in the second part of the experiment?

Sorting the parts by type helps in quickly identifying and assembling the parts, thus reducing the overall assembly time.