Numerical on Design of Gear Box - Design of Gear Box - Design of Mechanical Systems

TL;DR

This video provides a detailed analysis of a design of mechanical systems numerical question paper from Mumbai University, focusing on structural diagrams, ray diagrams, speed charts, deviation charts, and number of teeth calculations.

Transcript

hello everyone in this video we are going to discuss one numerical which is of design of mechanical systems that is of semester eight in mechanical engineering of mumbai university and it is a question paper of december 2019 and the question is asked for 20 marks and it is based on the design of gearboxes or gearbox which is of module 6 of syllabus... Read More

Key Insights

• 💹 The numerical question focuses on the design of gearboxes for a lathe machine operation, covering topics such as structural diagrams, ray diagrams, speed charts, and deviation charts.
• ⁉️ The video provides detailed step-by-step solutions and explanations for each sub-question in the question paper.
• ☺️ The selection of the best structural formulas and diagrams is based on the rule of having x values in ascending order.
• 🐎 Rounded off spindle speeds are used to calculate the number of teeth in each gear and analyze the deviation in speed charts.
• 🐎 The deviation analysis includes calculating the deviation percentage and representing it in a speed deviation chart.

Questions & Answers

Q: What is the main focus of the numerical question discussed in the video?

The main focus of the numerical question is the design of gearboxes for a lathe machine operation in a mechanical system.

Q: How many stages are there in the gearbox design discussed in the video?

The gearbox design discussed in the video has two stages.

Q: What is the significance of the geometric progression ratio (GP ratio) in gearboxes?

The GP ratio is commonly used in gearboxes to determine the number of teeth in each gear.

Q: How are the best structural formulas and diagrams selected from multiple possibilities?

The best structural formulas and diagrams are selected based on the rule that the x values in the formulas should be in ascending order.

Q: What are the rounded off spindle speeds used for in the analysis?

The rounded off spindle speeds are used to calculate the number of teeth in each gear and to analyze the deviation in speed charts.

Q: How is the deviation percentage calculated in the deviation analysis?

The deviation percentage is calculated using the formula: (Actual RPM - Theoretical RPM) / Theoretical RPM * 100.

Q: What are the limits of deviation in the numerical question discussed in the video?

The limits of deviation in the numerical question are +/- 4.1%.

Q: What is the purpose of the speed deviation chart in the analysis?

The speed deviation chart visually represents the deviation in speeds for each gear in the gearbox design.

Summary & Key Takeaways

• The video discusses a numerical question from Mumbai University's mechanical engineering syllabus on the design of gearboxes for a lathe machine operation.

• The question paper is worth 20 marks and covers topics such as structural diagrams, ray diagrams, speed charts, deviation charts, and number of teeth calculations.

• The video provides step-by-step solutions and explanations for each sub-question in the question paper.