Which angle is most important in designing of cam profile?

Which angle is most important in designing of cam profile?

While designing a cam, pressure angle is one of the most important parameters which is directly proportional to

• pitch circle diameter.
• Prime circle diameter.
• lift of cam.
• base circle diameter.

What is the law of cam design?

Fundamental Law of Cam Design Any cam designed for operation at other than very low speeds must be designed with the following constraints: • The cam function must be continuous through the first and second derivatives of displacement across the entire interval (360°).

What are the necessary elements of a cam mechanism?

The cam convert rotary motion of one element into reciprocating (linear motion) or into oscillatory motion. Cam is a driver member and follower is a driven member. A cam mechanism consists of three elements: a) the cam, b) the follower (or follower system), c) and the frame.

Which of the following parameters are relevant in designing cam profile?

tangent to the pitch curve. Explanation: It is the angle between the direction of the follower motion and a normal to the pitch curve. This angle is very important in designing a cam profile.

Which factors affect the size of a cam?

There are two major factors which affect cam size, the pressure angle and the radius of curvature.

How is a camshaft profile measured?

Take your digital caliper and measure the smallest diameter on the cam. This is called the base circle. This cam measured at 1.10 inches and 87 thousandths. The next value you will need is the largest diameter on the cam, the lobe part, which is called the base circle and lobe lift.

What is cam analysis?

The TM1021 is a comprehensive machine that allows students to study cams and followers. It shows how they convert rotary to linear motion, and helps students understand their limits of use before the onset of ‘bounce’.

What do different shaped cams do?

For example, cams that have a pear shape will cause the follower to lift, to fall and then to pause before repeating the action. The cams that have a circular shape, sometimes referred to as eccentric cams, will cause a smooth rise and fall movement with no pause. This is known as harmonic action.

What is minimum radius of cam?

Question: A cam operates a roller follower, axis passing through theaxis of cam. The specifications are. Minimum radius of cam = 25 mm.

What is cam profile?

A cam is generally a disc or a cylinder mounted on a rotating shaft, which gives a special motion to a follower, through direct contact. The cam profile is determined by the required follower motion and the design of the type of follower.

What are the different types of cam?

There are various types of cams available, that are listed below:

• Disk or Plate cam.
• Cylindrical cam.
• Translating cam.
• Wedge cam.
• Spiral cam.
• Heart-shaped cam.

How the cam size is defined?

In practice the cam size is determined by considering two factors: the pressure angle and the minimum radius of curvature.. The pressure angle, which is the reciprocal of the transmission angle m (i.e. a=p/2-m ) is defined as: In cams there is point contact between the two profiles.