Drilling Machine Chapter-4 Drilling machines Any component manufactured has one or more cylindrical hole in them. The process of making a hole is known a drilling. The cutting tool‚ which is used for making holes‚ is known as drill. The drill is a multipoint cutting tool. Definition: Drilling is the operation of making holes in a work piece using a drill bit. The hole is generated by the rotating drill‚ which exerts large force on the work piece clamped rigidly on the machine
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History of the Sewing Machine Before the sewing machine appeared‚ making clothes was the main occupation of half of the human race. For over 20‚000 years‚ countless hours were spent on making garments and other textiles to fulfill daily needs. The first sewing needles were made of bones and animal horns and the first thread was made of animal sinew (inventors.about.com‚ 4/16/06). The sewing machine‚ however‚ was a remarkable invention that was beneficial to all populations. More critical
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Healthy Lifestyle In today’s society we told that we need to stop eating at fast food restaurants because that is the source of obesity‚ which is wrong there are many reasons to why people are gaining weight. One of the reasons is that we have become lazy. Exercise We sit around too much‚ we know we need to get out of the house and exercise‚ but we create so many excuses to why we can’t. For example most people say that they are too busy to exercise or that they can’t because it hurts‚ people
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Simple Machines Definitions: Machine- A device that makes work easier by changing the speed ‚ direction‚ or amount of a force. Simple Machine- A device that performs work with only one movement. Simple machines include lever‚ wheel and axle‚ inclined plane‚ screw‚ and wedge. Ideal Mechanical Advantage (IMA)- A machine in which work in equals work out; such a machine would be frictionless and a 100% efficient IMA= De/Dr Actual Mechanical Advantage (AMA)- It is pretty much the opposite of
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age of machine. Machine has acquired a high priority in the modern era. It has come to occupy a place of major importance in the life of man. In all spheres and walks of life machine comes to the aid of man. Right from the time of waking up in the morning till going to bed at night‚ man continues to make use of some machine or the other. In short‚ machine has come to stay as an indispensable instrument of considerable assistance to man at every step. Countless are the uses which machine has conferred
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GRINDING MACHINES Grinding is the process of removing metal by the application of abrasives which are bonded to form a rotating wheel. When the moving abrasive particles contact the workpiece‚ they act as tiny cutting tools‚ each particle cutting a tiny chip from the workpiece. It is a common error to believe that grinding abrasive wheels remove material by a rubbing action; actually‚ the process is as much a cutting action as drilling‚ milling‚ and lathe turning. The grinding machine supports and
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simple choices of eating healthy and exercising. Better health choices can lead to a higher quality of life‚ and possibly lengthen your life span. This is because when these simple daily life changes are made people can prevent diseases or other health problems. Expanding your knowledge on these things can possibly encourage you to better your life. Obesity is taking over our world and affecting everyone who is uneducated about what they should be doing to live a healthy life. Failing to do these
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Being Healthy The saying‚ “Without disease is a good fortune.” is true. Many people go through their lives trying to maintain a good health. When people have a good health‚ they are more likely to live happier life. Being healthy is the key to surviving in this world‚ both physically and mentally. Some keys to being physically and mentally healthy are : eating right‚ take a rest‚ do exercise‚ be an optimistic and stress-free person. Eating right is the most important because everyone needs to
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My idea of a healthy community would be that of a place where health promotion is pushed by creating a suitable environment for the wellness of everyone. There is much that can be done to create healthy communities. Communities that support people in making healthy choices help prevent chronic diseases and the complications that can result from them. Public health works with a variety of partners to create healthy communities including transportation planners‚ city planners and land use experts because
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A Healthy Mind Many people do not realize‚ and often underestimate‚ the importance of good health. Health‚ as they say‚ is wealth. Good health is necessary to carry out daily tasks. When discussing healthy‚ many people would consider the condition of their bodies and forget about the condition of their minds. However‚ health is not only about alleviating and being free from physical aspects of health‚ it also means being healthy in one’s mind too. An unhealthy mind results in an unhealthy body.
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