Month: <span>November 2011</span>

No wheels no car and who is currently the wheel without tires? Who among us has wondered where it came from a modern automobile tire? The world's first automobile tire made and patented by Robert William Thomson, back in 1846. In Pat was presented the design of the invention, as well as the present description of the materials for the manufacture of tires. It was to consist of two parts: the outer coating and a camera. Exterior coating consisted of pieces of Skin, joined by rivets, and the camera is made of several layers of canvas, with special impregnation. After testing tires were marked: coach buses with more comfortable, silent and easy. But after the death of Thomson's invention was forgotten, although all samples of the "air wheels" are preserved. In 1888, John Dunlop Thomson revived the idea. That his name is known worldwide as the name of the author and creator of the pneumatic tire.

Top of this invention is dated 1887, when John decided to put on his son's tricycle hoops with a hose, pumped up with air. The advantages of pneumatic tires have been evaluated in a short time, and their development began with a small company, "pneumatic tire and Bout agency for the sale of bicycles. " To date, Dunlop one of the largest firms in manufacturing tires. Chald Kingstn Ueltch in 1890, proposed to insert into the edge of tire wire rings and separate the chamber from the tire. A Frenchman and Englishman Diderot Bartlett came up with ways of mounting and dismounting tires. French Andre and Edouard Michelin – the first to use pneumatic tires on cars. A lot of time and improvements to a pneumatic tire molded rubber replaced.

During the First World War began the development of truck tires, the pioneers in this field were Americans. Then there are large firms that produce tires in bulk. Many of these firms still exist. This, for example: 'Michelin' in France, 'Dunlop' in England, 'Pirelli' in Italy. In the mid-50s of the twentieth century came new developments in the design of the tires. Firm "Michelin" offered to insert the hard times in the bus, it consisted of layers of metal cords. These tires are called radial. In the late 50s has been paid attention to tires, which were to provide high coupling properties and high durability. In the 60 years has been on developing low-profile tires, and in 70 years there is a transition of cars on radial tires, which increases safety and driving economy fuel. The main material for production of tires is rubber, which is made from synthetic and natural rubber and cord. Cord fabric made of polymer and textile yarns, as well as from metal cord. Bus consists of: projector skeleton belt layers, and the side of the board. In today's world is more than one billion tires annually, the industry is the production of tires is a priority for many states. Yet, car without tires in today's world of comfort, can not exist.

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The importance of the System Administrator role has long been recognized, a good specialist – at a premium. Sysadmin taxis computers, and therefore the people, information, and, most importantly, the reputation of the company. Correspondingly, it responsibility. Drop service on the server, the virus in the network or the Internet may faint for a long time to paralyze the work of office and "stained" the reputation of the company. The main thing – the system works. Today in the arsenal of a sysadmin There are many programs for system administrators, both domestic and many foreign manufacturers over. "Friends", by the way, often many times cheaper, "gourmet" colleagues and is not inferior to them in the technical features and capabilities. Which programs are gentlemanly set sysadmin? It should come up to the administrator of problems: 1.

First of all, among the programs for system administrators this set must be present tool to monitor your network to detect problems with network equipment. This includes the monitoring of ports, protocols, servers, etc. These measures are intended not only to help respond quickly to equipment failure, "drop" server, but also to prevent unauthorized connections to the network, in time to identify the action of malicious software or viruses, and more. 2. Program for system administrators to solve the problem of hardware inventory. One of the functions is a system administrator control over the "iron" of the organization, supervision of his condition. Permanent computer inventory allows time to register the loss of equipment or its replacement for the older and to make the necessary upgrades.

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The next step is milling the part: to give relief detail on the surface of the milled and edge. MDF is suitable for milling any equipment – from manual mill to CNC machining centers. In the production of standard software facades can do milling machine copier copiers with a set of (Made on CNC milling machine), on which the milling. Maximum performance and reduce the cost of milling cycle makes the sharing of the CNC machine and lathe-duplicating machines. The determining factor is the total length of milling blanks.

The total length of the inner milling Raised panels (Rfilenki) will depend on the decoration of the facade (with its production planning can be taken at the average level of approximately 75% of the perimeter of the facades). Thus, the time required for milling of the total facade T = (L / vn + Tvo) / Quispe, where L – total length of the milling of all facades; vn – feed rate at milling. When milling MDF feed rate can be as follows: 4-15 m / min depending on the diameter cutters; GUT – the time of auxiliary operations change tools change blanks. This time depends on the type processing center and is approximately 15% of the normal time of milling, Quispe – utilization of working time, usually 0.8. Milling at the site with additional equipment is also aspirated plant with capacity of 7000 m3 / h. At subsequent stages of the production technology is different depending on how the facade facing.

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