Table of Contents
- 1 What is the pressure angle in cam explain it significance?
- 2 What is the pressure angle in cam?
- 3 What is the effect of increase in pressure angle?
- 4 Is it expected to have a higher pressure angle in the cam follower system?
- 5 What is the advantage of smaller pressure angle?
- 6 What is the result of low pressure angle gear?
- 7 What is the pressure angle of a cam?
- 8 What is the significance of pressure angle in an engine?
- 9 What is the effect of pressure angle on a follower?
What is the pressure angle in cam explain it significance?
Pressure angle: The angle at any point between the normal to the pitch curve and the instantaneous direction of the follower motion. This angle is important in cam design because it represents the steepness of the cam profile.
What is the pressure angle in cam?
The pressure angle represents the steepness of cam profile, is the angle between the normal to the pitch curve at a point and the direction of the follower motion. It varies in magnitude at all instants of the follower motion.
What is the effect of increase in pressure angle?
The strength of the tooth is an important factor in the selection of the pressure angle. Figure 14-6 shows the variation of gear tooth geometry and pressure angle. The higher the pressure angle, the higher the tooth strength. The noise that the gears generate decreases with an increase in the contact ratio.
Why pressure angle in cam follower mechanism should be small?
The pressure angle of cam-roller-follower mechanisms is defined as the angle between the common normal at the cam-roller contact point and the velocity of as a point of the follower [3], as depicted in Fig. This angle plays an important role in cam design. The smaller , the better the force transmission.
On which of the following factors does the pressure angle of the cam does not depend?
On which of the following factors does the pressure angle of the cam does not depend? offset between center lines of follower and cam, angle of ascent and lift of follower, it is independent of the shape of cam. 4.
Is it expected to have a higher pressure angle in the cam follower system?
Abstract. With the purpose of avoid that the force between follower and cam surface bends follower shaft, pressure angle must keep as low as possible. A high pressure angle will increase the friction effect then it is possible that follower displaces or even blocks.
What is the advantage of smaller pressure angle?
Smaller pressure angles have high contact ratio and result in noiseless operation. They have low separating and radial force. But low pressure angles result in high contact and bending stresses. To avoid interference large number of t are required for small pressure angles.
What is the result of low pressure angle gear?
5) The low-pressure angle will decrease power transmission capacity but will improve gear meshing properties like reduced noise. 6) Larger pressure angle provides a wider base.
What is pressure angle in Kom?
The pressure angle exists between the tooth profile and a radial line to its pitch point. In involute teeth, it is defined as the angle formed by the radial line and the line tangent to the profile at the pitch point.
What is meant by the jump phenomenon in the cam and follower system?
THEORY: Jump Phenomenon: The Jump phenomenon occurs in case of cam operating under the action of compression spring load. With jump the cam and the follower separate owing to excessively unbalanced forces exceeding the spring force during the period of negative acceleration.
What is the pressure angle of a cam?
Pressure Angle: It is the measure of steepness of the cam profile. The angle between the direction of the follower movement and the normal to the pitch curve at any point is called pressure angle. Pressure angle varies from maximum to minimum during complete rotation.
What is the significance of pressure angle in an engine?
As Pressure angle is the angle made by the direction of motion of follower and the normal to the pitch curve at any point (or in other words the measure of steepness of the cam profile), its significance can be stated as- Higher value of pressure angle increases the horizontal force acting on the follower (as higher is the side thrust).
What is the effect of pressure angle on a follower?
Higher value of pressure angle increases the horizontal force acting on the follower (as higher is the side thrust). This could jam the translating follower in its guide ways.
What is presspressure angle ( μ)?
Pressure Angle, μ, is the ‘angle between the direction in which cam-follower moves and the direction of the force transmission from the cam to the cam-follower’.