Product
Explore to Evolve (Take Apart)

Overview

This page is dedicated to exploring everyday products in order to acquire knowledge and evolve future designs. Normally this is referred to as a take apart or product tear-down. We are exploring products and machines for the purpose of learning various intricacies, beauty, and complex richness behind our machines & products.

Table of Contents

Machine Design
    MillIE: CNC Router Overview ⇒ More ...
        ⇒ Assembly of Millie
        ⇒ Power Up Millie
Mechanical Hardware
    VonShef Mixer ⇒ More ...
    Folding Shelf Bracket ⇒ More ...
    Canister Whipped Cream ⇒ More ...
    Beverage Dispenser 1.5 L
Principles
    Drawing Interpretations
Beauty is in the Details
    Threads

Machine Design

MillIE: CNC Machine Milling Assembly

Status: Draft

Machine Design Insights
- Roller bearing mounting methods
- Linear guideways assembly analysis
- Increasing motor life by reducing loads on motor shaft
- Alignment principles: Rough
Analysis
Linear Guideways Assembly
Motor Loading Impact on Life of Motor

Assembly

Manufacturing

Mechanical Hardware

VonShef Kitchen Mixer

Machine Design Insights
- Reduce friction of rotor shaft axial force using point contact
- Use spherical bushings for self alignment
- Elastic averaging used to hold spherical bushing
Analysis
Compression Spring Sizing
Hertz Contact Between Spheres
Motor Transmission & Shear Stress

Video

Core

Folding Shelf Bracket

Machine Design Insights
- Abbe error for stiffness calculation
- Beam bending
- Buckling of components
Analysis
Abbe Error
Beam Bending - Cantilever w/ support
Buckling

Video

Buckling

Canister Whipped Cream

Machine Design Insights
- Self help principle
- Rubber seals
- Sheet metal joining
Analysis
Hoop Stress

Video

Valve

Beverage Dispenser - 1.5 L

Machine Design Insights
- Rotational motion to linear motion mechanism
- Interference fits
- Flow rate measurement & Reynolds number
Analysis
Torsion Spring
Interference Fits

Video

Valve

Principles

Interpretation of technical drawings

One of the skills that a mechanical engineer should master is interpreting engineering drawings. Engineering drawings have several layers: 1) part geometry, 2) manufacturing (i.e. welding), 3) tolerances, etc. One way to begin to exercise part geometry interpretation is by examining patents. Patent drawings offer a plethora of examples to practice drawing interpretation.

Beauty is in the Details

Threads Quick Tip 1

Threads are like the bread and butter of manufacturing. They can be your best friend and vice versa. Video illustrates the importance of understanding the manufacturing process, tooling, post processing, etc. to get threads right.

Short 3 min Video

Threads Quick Tip 2

Threads go a little by Saint Venant principle of characteristic dimensions. Want 3 to 5 threads to be engaged. Sometimes with the manufacturing process comes little details to be considered.

Short 4 min Video

DARE2MAKE CHALLENGE

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Schedule

  • Overview Meche PE
  • Product Dev. Process
  • Explore → Hands On
  • I - Principles
  • → Foundation
  • → A - Basic Engineering Practices
  • → B - Engineering Science and Mechanics
  • → C - Material Properties
  • → D - Strength of Materials
  • → E - Vibration
  • II - Applications
  • → A - Mechanical Components
  • → B - Joints and Fasteners
  • → C - Supportive Knowledge
  • III - Holistic Knowledge
  • → A - Heat Transfer
  • → B - Fluid Dynamics
  • → C - Controls
  • → D - Thermodynamics
  • → E - Electronics
  • IIII - Precision Machine
  • → A - Error Apportionment
  • → B - Metrology