Engineering Graphics: Unit I (d): Engineering Curves
Types of Engineering Curves
Engineering Graphics (EG)
Engineering curves are basically classified into three types as below: i) Rouletters, ii) Spiral curves, and iii) Helix
TYPES OF ENGINEERING CURVES Engineering curves are basically classified into three types as below: i) Rouletters, ii) Spiral curves, and iii) Helix i) Rouletters: Rouletters are the curves generated by a fixed point on the circumference of a rolling curve which rolls without slipping along a fixed straight line or a curve. The fixed straight line is called as directing line and the fixed circle is known as directing circle (or) base circle. Important curves of Rouletters are : 1. Cycloid 2. Epicycloid 3. Hypocycloid and 4. Involute Cycloid is a curve generated by a point on the circumference of a circle which rolls without slipping along a fixed straight line. Epicycloid is a curve generated by a point on the circumference of a circle which rolls without slipping, around the outside of a fixed circle. Hypocycloid is a curve generated by a point on the circumference of a circle which rolls without slipping along the inside surface of a fixed circle. Involute is a curve traced out by a point on a straight line which rolls around a circle or a polygon, without slipping. It may also be defined as a curve traced out by a point on a taut inextensible string which is being wound around a circle or polygon. Spiral curves: If a line rotates in a plane about one of its ends and at the same time, if a point moves continuously along the line from one end to the other, the curve traced out by the moving point is called a spiral. Helix Helix is defined as a space curve generated by a point which moves on the surface of a cylinder or cone in a circumferential direction at a constant angular speed and with a simultaneous axial advancement at a uniform rate.
Engineering Graphics: Unit I (d): Engineering Curves : Tag: : Engineering Graphics (EG) - Types of Engineering Curves
Engineering Graphics: Unit I (d): Engineering Curves
Under Subject
Engineering Graphics
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