A cam and follower mechanism is a profiled shape mounted on a shaft that causes a lever or follower to move. Cams are used to convert rotary to linear (reciprocating) motion. … The follower maintains contact with the cam through the force of gravity or by a spring.
What are the uses of cam & follower?
Cam and follower are widely used for operating inlet and exhaust valve of I C engine. These are used in wall clock. These are used in feed mechanism of automatic lathe Machine. These are used in paper cutting machine.
How does a cam work?
How do cams work? Cams generally do the opposite job to cranks: they turn rotary motion into reciprocating motion. Whatever you need to move up and down (or back and forth) rests on top of an oval wheel, sometimes mounted off-center (the cam). As the cam rotates, the object it supports rises up and down.
What is cam in machine?
Computer Aided Manufacturing (CAM) is the use of software and computer-controlled machinery to automate a manufacturing process. … Machinery that can turn raw material into a finished product. Post Processing converts toolpaths into a language machines can understand.Where are cam and followers used in the real world?
The cam and follower mechanism is widely used for operating the inlet and exhaust valves of internal combustion engines. They are used in wall clocks and the feed mechanism of automatic lathe machines. They are also used in paper cutting machines and weaving textile machinery.
Where is a cam?
What Is a Camshaft? Located in the “top end” of an engine, the camshaft is a critical part of the valve train that allows air and fuel to enter the combustion chamber (the space above a piston) and exhaust gases out after they burn.
What is a follower in engineering?
A follower is a mechanical element with respect to which the cam rotates in an oscillating or circular motion. The follower prevents the push and pulls of the cam. The followers are used to transfer the movement to the required machine part.
What is cam and its types?
There are various types of cams available, that are listed below: Disk or Plate cam. Cylindrical cam. Translating cam. Wedge cam.What is cam stand for?
By james nunns 18 Apr 2017. CAM stands for Computer-Aided Manufacturing and referes to the use of software to control machine tools used in manufacturing processes. Enabling faster, accurate and more precise production of components, CAM is usually the next step after computer-aided design (CAD).
How is camshaft made?In automobile and tractor engines, the camshafts (or cam lobes) are made of chilled cast iron, which is comparable to the alloyed steels used in the manufacture of bearings. The wear resistance of chilled cast iron is considerably higher of that of ductile cast iron.
Article first time published onWhat is the advantage of cam?
The benefits of CAM Greater speed in producing components. Greater accuracy and consistency, with each component or finished product exactly the same. Greater efficiency as computer controlled machines do not need to take breaks. High sophistication in terms of following complex patterns like tracks on circuit boards.
What is cam and follower Quora?
A cam and follower are a method of converting rotary motion into linear motion. The most well known application is in an internal combustion engine, where the cam and follower combination determines the opening times and duration of the valves. (via the pushrod and rocker arm).
What is circular cam?
A circular cam is made by mounting a circular plate on a camshaft at some distance d away from the circle center (Figure 4.8). This gives the simplest cam profile. The eccentric attachment of the circular plate produces a reciprocating motion of the follower.
What is cam nomenclature?
The figure below shows the cam nomenclature along with vertical follower. 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. … Stroke: The greatest distance or angle through which the follower moves or rotates.
What is a cam profile?
[′kam ‚prō‚fīl] (design engineering) The shape of the contoured cam surface by means of which motion is communicated to the follower. Also known as pitch line.
What is cam lobe?
Cams located on the camshaft that open and close the intake and exhaust valves in time with the motion of the piston. Cam lobes control the valve lift, and there is a direct relationship between the shape of the cam lobes and the way the engine performs in different speed ranges.
What is CAM stands for MCQ?
Answer:content-addressable memory.
What is meant by CAD and CAM?
CAD/CAM stands for computer-aided design & computer-aided manufacturing. CAD/CAM software is used to design and manufacture prototypes, finished products and production runs.
What is roller follower?
The Roller Follower is a compact and highly rigid bearing system. It contains needle bearings and is used as a guide roller for cam discs and straight motion. Since its outer ring rotates while keeping direct contact with the mating surface, this product is thick- walled and designed to bear an impact load.
What are the 3 types of cam?
- Acupuncture.
- Ayurveda.
- Homeopathy.
- Naturopathy.
- Chinese or Oriental medicine.
Who invented camshaft?
Camshaft – Invented by Al-Jazari The cam and camshaft were invented by Al-Jazari in 1206 and were part of his ‘castle clock’ – a complex water-powered astronomical clock.
What are the parts of camshaft?
- Base Circle: The back side of the cam lobe. …
- Clearance Ramp: The transition area between the ramp and the base circle. …
- Opening Ramp: The side of the lobe that raises the lifter.
- Lobe Centerline: The highest point of lift on the lobe. …
- Nose: The top part of the lobe.
Do all cars have a camshaft?
Almost all of 4 stroke vehicles (with the exception in B and C) require camshaft in some form or another. It could be in cylinder block or in the cylinder head.
What is CAM examples?
- Laser cutter – A laser is directed from a precise length on to a material to either cut or etch. …
- Computer numerical controlled (CNC) miller – Similar to a pillar drill, a milling machine uses a rotating cutting tool.
How can CAM improve quality?
Most CAM-CAD systems provide high–speed machine tool paths, which help manufacturers minimize their cycle times, reduce tool and machine wear. High-speed tool paths enable manufacturers to improve their cutting quality and accuracy.
How is CAD and CAM used in industry?
CAD/CAM applications are used to both design a product and program manufacturing processes, specifically, CNC machining. CAM software uses the models and assemblies created in CAD software, like Fusion 360, to generate toolpaths that drive machine tools to turn designs into physical parts.
What is cam in mechanical engineering?
A cam is a rotating or sliding piece in a mechanical linkage used especially in transforming rotary motion into linear motion. It is often a part of a rotating wheel (e.g. an eccentric wheel) or shaft (e.g. a cylinder with an irregular shape) that strikes a lever at one or more points on its circular path.
What are the elements of cam and follower?
cam, machine component that either rotates or moves back and forth (reciprocates) to create a prescribed motion in a contacting element known as a follower. The shape of the contacting surface of the cam is determined by the prescribed motion and the profile of the follower; the latter is usually flat or circular.
What are different types of follower motion?
Uniform velocity, Simple harmonic motion, Uniform acceleration and retardation, Cycloidal motion.
What is knife edge follower?
[′nīf ‚ej ′kam ‚fäl·ə·wər] (design engineering) A cam follower having a sharp narrow edge or point like that of a knife; useful in developing cam profile relationships.
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.
