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What is the Mechanism of floating carriage diameter measuring machine?
Wiki User
∙ 11y ago
floating carriage diameter measuring machine is design to have accurate of major,minor and pitch diameters of precision screw threads as well as those of odd flutes screw taps.
Wiki User
∙ 11y ago
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What are the 5 kinds of lubrication systems and state clearly their application and how they function?
SPLASH The splash system is no longer used in automotive engines. It is widely used in small four-cycle engines for lawn mowers, outboard marine operation, and so on. In the splash lubricating system, oil is splashed up from the oil pan or oil trays in the lower part of the crankcase. The oil is thrown upward as droplets or fine mist and provides adequate lubrication to valve mechanisms, piston pins, cylinder walls, and piston rings. In the engine, dippers on the connecting-rod bearing caps enter the oil pan with each crankshaft revolution to produce the oil splash. A passage is drilled in each connecting rod from the dipper to the bearing to ensure lubrication. This system is too uncertain for automotive applications. One reason is that the level of oil in the crankcase will vary greatly the amount of lubrication received by the engine. A high level results in excess lubrication and oil consumption and a slightly low level results in inadequate lubrication and failure of the engine. A splash lubrication system is provided for motor vehicle transmissions and comprises an oil sump in the bottom portion of a case. The case accommodates a transmission shaft provided with gears which are immersed in the oil at least partly when the said oil sump is filled completely. In order to prevent the synchronizing mechanism from being blocked by cold and, consequently, very viscous oil in the presence of extremely low operating conditions--a condition which could lead to unsynchronized faulty gear shifting operations and, thus, damage to the transmission, the oil sump is connected with a cavity into which oil is drawn from the oil sump under low operating temperature conditions of the transmission. To this end, preferably, an expansion body is arranged in a cavity in the transmission shaft which contracts under cold conditions, and the cavity is connected. Combination Splash and Force Feed In a combination splash and force feed (fig.), oil is delivered to some parts by means of splashing and other parts through oil passages under pressure from the oil pump. The oil from the pump enters the oil galleries. From the oil galleries, it flows to the main bearings and camshaft bearings. The main bearings have oil-feed holes or grooves that feed oil into drilled passages in the crankshaft. The oil flows through these passages to the connecting rod bearings. From there, on some engines, it flows through holes drilled in the connecting rods to the piston-pin bearings. Cylinder walls are lubricated by splashing oil thrown off from the connecting-rod bearings. Some engines use small troughs under each connecting rod that are kept full by small nozzles which deliver oil under pressure from the oil pump. These oil nozzles deliver an increasingly heavy stream as speed increases. At very high speeds these oil streams are powerful enough to strike the dippers directly. This causes a much heavier splash so that adequate lubrication of the pistons and the connecting-rod bearings is provided at higher speeds. If a combination system is used on an overhead valve engine, the upper valve train is lubricated by pressure from the pump. FORCE FEED A somewhat more complete pressurization of lubrication is achieved in the force-feed lubrication system (fig.). Oil is forced by the oil pump from the crankcase to the main bearings and the camshaft bearings. Unlike the combination system the connecting-rod bearings are also fed oil under pressure from the pump. Oil passages are drilled in the crankshaft to lead oil to the connecting-rod bearings. The passages deliver oil from the main bearing journals to the rod bearing journals. In some engines, these opening are holes that line up once for every crankshaft revolution. In other engines, there are annular grooves in the main bearings through which oil can feed constantly into the hole in the crankshaft. The pressurized oil that lubricates the connecting- rod bearings goes on to lubricate the pistons and walls by squirting out through strategically drilled holes. This lubrication system is used in virtually all engines that are equipped with semi floating piston pins. Full Force Feed In a full force-feed lubrication system (fig.), the main bearings, rod bearings, camshaft bearings, and the complete valve mechanism are lubricated by oil under pressure. In addition, the full force-feed lubrication system provides lubrication under pressure to the pistons and the piston pins. This is accomplished by holes drilled the length of the connecting rod, creating an oil passage from the connecting rod bearing to the piston pin bearing. This passage not only feeds the piston pin bearings but also provides lubrication for the pistons and cylinder walls. This system is used in virtually all engines that are equipped with full-floating piston pins. kinds of Lubrication Differing widely in viscosity, specific gravity, vapor pressure, boiling point, and other properties, lubricants also offer a wide range of selection for the increasingly varied needs of modern industry. But whatever their derivation or properties, the purpose of lubricants is to replace dry friction with either thin-film or fluid-film friction, depending on the load, speed, or intermittent action of the moving parts. Thin-film lubrication, in which there is some contact between the moving parts, usually is specified where heavy loads are a factor. In fluid, or thick-film, lubrication a pressure film is formed between moving surfaces and keeps them completely apart. This type of lubrication cannot easily be maintained in high-speed machinery and therefore is used where reciprocating or oscillating conditions are moderate.
What is the Principle and operation of heleshaw pump?
The operation of the pump, though a bit complex, is an interesting one. As shown in the figure, the circular ring, which accommodates the slippers is concentric with the central valve arrangement . Due to this, the piston doesn't have any relative reciprocating motion inside the cylinder. No oil is pumped or sucked in and although the pump is rotating no fluid is delivered, during this state. But this is only until the arrangement is concentric. As soon as the circular floating ring is pulled to the right the pistons in the cylinder undergo a reciprocating motion. The lower piston moves inwards and discharges fluid through the lower port. The piston moves till the horizontal position and then moves outwards in the opposite direction, drawing in fluid through the upper ports. Thus in this way the top ports act as suction ports and the lower ports act as discharge ports. If the circular ring is pushed to the left direction, the suction and discharge ports are reversed. All the variable displacement pumps are positive displacement pumps, with a constantly rotating arrangement and a variable discharge design. If the system has more than one pump, a non reversing locking gear is provided, which prevents the reverse operation that might take place at times when only one pump is operating. Moreover, the arrangement is such that as soon as the pump is stopped the locking gear would come into action .
What is the importance of rcx robot?
Robots in antiquity and through the Middle Ages were used primarily for entertainment. However, the 20th century featured a boom in the development of industrial robots. Through the rest of the century, robots changed the structure of society and allowed for safer conditions for labor. In addition, the implementation of advanced robotics in the military and NASA has changed the landscape of national defense and space exploration. Robots have also been influential in the media and profitable for toy manufacturers.HistorySignificanceRobots began as entertainment for royalty. Inventors such as Al-Jazari and Leonardo Da Vinci worked to build automatons for their benefactors. Al-Jazari built a floating band that resembled humans and performed various songs and drum beats depending on the programming of a series of pegs. Da Vinci created a automaton based on the knight's armor. It could stand and move its arms and neck, as well as open its mouth. It wasn't until 1961--when an inventor named George Devol installed his robot, Unimate, into a General Motors factory in Trenton, New Jersey--that the first modern industrial use of the robot was attempted. Unimate would lift die-cut metal pieces and stack them for the human workers. This development changed the dynamics of robotics and brought them into the workplace, making them pivotal to a business.FeaturesIndustry has benefited drastically from the expanse of a robotic work force. Automated machines have taken over the duties of dangerous and mundane jobs from humans, allowing greater productivity. Because robots never tire, extra shifts have been added to factories. Farmers have taken advantage of new technology with automated harvesters, the waste disposal industry has implemented robots in some of its dirtier jobs, and the medical industry benefits from advancements in assisted surgical robotics. The idea of a factory with no human workers has come to fruition. IBM runs a "lights off" factory in Texas completely staffed by fully autonomous robots making keyboards.The military has launched various programs in robotic technology, most successfully the Predator and Reaper unmanned aerial reconnaissance vehicles that allow a pilot to control the robot from vast distances. The vehicles can do high-altitude surveillance for long periods without having to support a live pilot, and when needed the planes can launch small strikes on targets in zones that normal aircraft cannot operate.ConsiderationsRobots' main position in society are in a capacity to assist humans by taking on the jobs that are dirty, dull or dangerous. Beyond the factory floor, robots have been instrumental in space exploration and performing other tasks that would be impossible for humans to accomplish. The Mars rovers Spirit and Opportunity lasted years longer than NASA predicted and stayed on the mission far past the time any manned mission could have functioned. The Deep Impact probe that crashed into a comet literally functioned at a capacity impossible for humans. The Chernobyl meltdown site contains radiation levels that would kill any human. As such, the Pioneer robot was developed to enter the remains of the facility to address structural stability. Also, the Dante II was utilized to enter volcanic eruptions, which are impossible for humans to investigate.MisconceptionsRobots have had a long importance in the media, between our fascination with real-life robotics and their fictional counterparts. The first instance of a robot in a film was in Fritz Lang's "Metropolis." It introduced the concept of a functioning automaton programmed to act as a human. Robots appeared frequently over the course of the next century in films such as "Forbidden Planet" and television programs like "Star Trek." Probably the most famous duo of robots ever are C-3PO and R2-D2 from the "Star Wars" films. The characters brought a humanistic attitude to the previously dry image of robots. In modern cinema, robots have portrayed heroes and villains, both elaborately sophisticated and starkly simplistic. The machines featured in "The Terminator" have long held a scary yet fascinating influence over the culture of robotics.Modern robotics are present everywhere in society, from a DVD burner in a computer to the microwave in most American kitchens. The invention of the microprocessor in 1971 caused the computerization of virtually every appliance and tool the modern home uses. Toasters and stoves utilize microprocessors that control sensors to reduce the likelihood of fires, while cellular phones implement virtual memory to enhance interaction. Most toy stores now feature hundreds of robots for educational and entertainment use. With the introduction of the "Furby" in the late 1990s, robots with limited artificial intelligence become a boon for the marketplace, generating vast amounts of revenue in simple consumer-ready robotics.
Will photosynthesis make a plant float?
Not at all, if it is not provided with floating mechanism.
What is the measuring unit of supercomputer speed?
" FLOPS " = Floating Point operations Per Second
What is the diameter of clay?
Clay can be any diameter you want to measure out. There isn't a one-size-fits-all piece of clay floating around the world somewhere -- clay is part of the earth.
A ball was floating in a pond overnight the water froze when the ball was removed it left a dent in the ice that was 8cm deep and 24cm wide calculate the diameter of the ball?
The diameter was 26 cm.
Discuss whether it is better for a country with a floating exchange rate to face an appreciation or depreciation of its currency?
The great atraction of a floating exchange rate is that in theory it provides a kind of automatic mechanism for keeping the balance of payment in equilibrium.
What is the unit of measuring used to describe the power of the processor?
The basic unit is FLOPS, which stands for FLoating-point Operations Per Second.
What is the zinc dross?
The upper layer that is floating on the surface of Zinc Furnace bath will be pulled out by a mechanism called drossing and the collected matter is Zinc Dross.
What is the unit for measuring processor speeds?
Processor speeds are usually measured in hertz (cycles per second) And then there are FLOPS ... Floating point operations per second.
What are the tools used to measure in science?
There are too many measuring tools in science to list them all, but I'll list a couple.Ruler (measuringsmall distances)Pipettes & Graduated Cylinders (measuring liquids)Scales (measuring weight and mass)Anemometers (measuring wind speeds)Thermometers(measuring temperatures)In principle, you can make ALL scientific measurements with:RulerClockPendulumScaleAmmeterLight meter1)Pan Balance 2)Floating Plate3)Chemical Balance4)Alcohol Thermometre5)Hourglass
Can density tell us what percentage of a floating object will be above the water?
Yes, because density is measuring the volume of the object. So it shows how much percent of the object is submerged.
What is Floating object on Microsoft Word 2007?
A floating object is an object that is floating, which is a floating object. Which = floating object.
How do you fix the window mechanism on a 95 Geo Tracker The cable has come loose and is just free floating on one end and binds on the other?
ONCE THE CABLE COMES OFF ,YOU NEED TO REPLACED THE WHOLE WINDOW REGULATOR.
