What is cam Outstroke?
What is cam Outstroke?
A period is a part of the cam cycle and it includes the following: Rise (Outstroke) – the upward motion of the follower caused by cam motion. Fall (Return stroke) – the downward motion of the follower caused by cam motion. Dwell – the stationary position of the follower caused by cam motion.
What is the formula of cam?
Roller Width b r (for Follower Shape Cylinder) Eccentricity e (Disc Cams for Translating Follower)…Cam Calculation Equations.
| Lift | f y (z) = (6z 2 – 15z + 10) z 3 |
|---|---|
| Speed | f v (z) = (z 2 – 2z + 1) 30z 2 |
| Acceleration | f a (z) = (2z 2 – 3z + 1) 60z |
| Pulse | f j (z) = (6z 2 – 6z + 1) 60 |
What are the nomenclature for cam profile?
Cam profile: Cam profile is outer surface of the disc cam. Base circle: Base circle is the smallest circle, drawn tangential to the cam profile. Trace point: Trace point is a point on the follower, trace point motion describes the movement of the follower.
What is minimum radius of cam?
The smallest circle in the cam profile is: Q6. A cam with a translating flat-face follower is desired to have the follower motion y (θ) = 4[2πθ – θ2], 0 ≤ θ ≤ 2π Contact stress considerations dictate that the radius of curvature of the cam profile should not be less than 40 mm anywhere.
What are the three types of cam?
Types of Cams
- Wedge or flat cam.
- Disk or Plate cam.
- Spiral cam.
- Cylindrical cam.
- Heart-shaped cam.
- Translating cam.
- Snail drop cam.
- Conjugate cam.
What is dwell period of cam?
Rise is the motion of the follower away from the cam center, dwell is the motion during which the follower is at rest; and return is the motion of the follower toward the cam center. There are many follower motions that can be used for the rises and the returns.
What is cam pathway?
Crassulacean acid metabolism, also known as CAM photosynthesis, is a carbon fixation pathway that evolved in some plants as an adaptation to arid conditions that allows a plant to photosynthesize during the day, but only exchange gases at night.
What is cam angle?
A. During which the follower returns to its initial position. Of rotation of the cam for a definite displacement of the follower. Through which, the cam rotates during the period in which the follower remains in the highest position.
What is throw cam?
Stroke or throw: The greatest distance or angle through which the follower moves or rotates. It is the maximum distance of followers from the base circle. This curve is generated if we assume the cam is fixed and the trace point of the follower moves around the cam.
What is the maximum angle of cam profile?
The oscillations in the root-type cam profile are attributed to inertia forces and stress wave propagation under impact loading as well as to an initial value of the maximum pressure angle very close to 30° (θmax = 28°, Figure 8.5a).
What are types of cam?
What are the different types of CAM?
- Acupuncture.
- Ayurveda.
- Homeopathy.
- Naturopathy.
- Chinese or Oriental medicine.
What are the different types of cam?
What is the offset of the line of stroke on a cam?
(b) the line of stroke is offset 20 mm from the axis of the cam shaft. The radius of the base circle of the cam is 40 mm. Determine the maximum velocity and acceleration of the follower during its ascent and descent, if the cam rotates at 240 r.p.m.
What is the cam lift for simple harmonic motion?
1. Cam lift = 40 mm during 90° of cam rotation with simple harmonic motion. 2. Dwell for the next 30°. 3. During the next 60° of cam rotation, the follower returns to its original position with simple harmonic motion. 4. Dwell during the remaining 180°.
What are the different types of cams?
Type of cams, Type of followers, Displacement, Velocity and acceleration time curves for cam profiles, Disc cam with reciprocating follower having knife edge, roller follower, Follower motions including SHM, Uniform velocity, Uniform acceleration and retardation and Cycloidal motion. Cams are used to convert rotary motion into reciprocating motion.
What is the pressure angle undercutting of a cam?
Pressure angle Undercutting A cam, with a minimum radius of 25 mm, rotating clockwise at a uniform speed is to be designed to give a roller follower, at the end of a valve rod, motion described below: 1. To raise the valve through 50 mm during 120º rotation of the cam: 2.
