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Mechanical Engineering Linking in Technical Objects Guiding Controls

Pages Work book p. 217 Text book p. 427

Linking in technical objects

Mechanical Engineering is… A branch of engineering that focuses on the design, production, analysis, working and improvement of technical objects with moving parts

A link allows… Two or more parts of a technical object to be held together

In mechanics, a component is… a part or fluid that performs a mechanical function

Linking is… The mechanical function performed by any component that connects different parts of a technical object

The degrees of freedom are… The set of independent movements that are possible for a given part in a technical object

Possibilities of Independent Motion

Translational Motion

Translational motion From left to right From top to bottom From back to front Tx Ty Tz

Left to Right (Tx) X- Axis

Top to Bottom (Ty) Y- Axis

Back to Front (Tz) Z-Axis

Rotational Motion

About the x axis About the y axis About the z axis Rx Ry Rz

X-Axis (Rx) X-Axis

Y-Axis (Ry) Y-Axis

Z-Axis (Rz) Z-Axis

Characteristics of links p. 218

1 st Characteristic pair Direct Indirect

Direct A direct link exists when two parts can hold together without requiring a linking component

Cell Phone > Case

Indirect An indirect link exists when the parts require a linking component to hold them together

Arm > Frame ?

2 nd Characteristic pair Rigid Flexible

Rigid A rigid link exists when the surfaces of the linked parts or the linking component are rigid

Base > monitor

Flexible A flexible link exists when the surface of the linked parts or the linking component can be deformed

Pages > spine

3 rd Characteristic pair Removable Non-removable

Removable A removable link exists when linked parts can be separated without damaging them

Laces > eyelets

Non-removable A non-removable link exists when separating the linked parts damages them or the linking component

Sole > upper ?

4 th Characteristic Pair Complete Partial

Complete link There is a complete link when there is no movement between linked parts

Top > bottom

Partial There is a partial link when at least one part is capable of motion with respect to the other

Cap > pen

Guiding Controls Work book p. 221 Text book p. 431

Guiding is… The mechanical function performed by any component that controls the motion of one or more moving parts

A Guiding Component or Control is.. A component whose mechanical function is to guide the motion of moving parts

Adhesion is… The phenomenon by which two surfaces tend to remain in contact with each other without slipping

In Mechanics, Friction is… A force that resists the slipping of one moving part over another

Lubrication is… The mechanical function performed by any component that reduces friction between two parts

Main Types of Guiding

Translational Guiding Ensures the straight translational motion of a moving part

Translational Guide

Rotational Guiding Ensures the rotational motion of a moving part

Rotational Guide

Helical Guiding… Ensures the translational motion of a moving part while it rotates about the same axis

Helical Guide

Homework Pp

Activity # 1 Table = group 1 student with white board + pen Group I.D. characteristics of link Write answers on white board Winners = prize

The types of « Links » between Parts The “link” between the frame and the adjusting screw is: ? Non-removable or removable, Complete or partial, direct or indirect, rigid or flexible,.

The types of « Links » between Parts The “link” between the frame and the adjusting screw is: ? Non-removable or removable, Complete or partial, direct or indirect, rigid or flexible,

The types of « Links » between Parts The “link” between the frame and the adjusting screw is: ? Non-removable or removable, Complete or partial, direct or indirect, rigid or flexible,

The types of « Links » between Parts The “link” between the frame and the adjusting screw is: ? Non-removable or removable, Complete or partial, direct or indirect, rigid or flexible,

The types of « Links » between Parts The “link” between the frame and the adjusting screw is: ? Non-removable or removable, Complete or partial, direct or indirect, rigid or flexible,

Types if GUIDES

The types of « Guides » between Parts The Guide between the frame and the adjusting screw is: ? Translational Rotational Helical

The types of « Links » between Parts The “link” between the bottom handle and the top handle is: ? permanent or removable, fixed or moveable, direct or indirect, rigid or flexible,.

The types of « Links » between Parts The “link” between the bottom handle and the top handle is: ? PERMANENT or removable, fixed or moveable, direct or indirect, rigid or flexible,.

The types of « Links » between Parts The “link” between the bottom handle and the top handle is: ? PERMANENT or removable, fixed or MOVEABLE, direct or indirect, rigid or flexible,.

The types of « Links » between Parts The “link” between the bottom handle and the top handle is: ? PERMANENT or removable, fixed or MOVEABLE, direct or INDIRECT, rigid or flexible,.

The types of « Links » between Parts The “link” between the bottom handle and the top handle is: ? PERMANENT or removable, fixed or MOVEABLE, direct or INDIRECT, RIGID or flexible,.

Wind Turbine Project

Horizontal Axis