Drill with radiator. Drawing, description

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Drill with radiator. home workshop

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Modern mechanical engineering makes increased demands on materials, and they, in turn, on tools for processing. It is no coincidence that at all NTTM exhibitions, new developments by young innovators are necessarily demonstrated, dedicated to solving these problems, taking into account the specifics and requirements of each specific production, and often of an intersectoral nature.

A group of NTTM participants of the All-Union Scientific Research Tool Institute proposes one of such solutions - a new drill for horizontal hole machining. It can be used for drilling both in structural materials and in alloyed steels, non-ferrous metals, even light alloys. A distinctive feature of the tool is the presence on the holder, in which the hard-alloy high-speed cutting plate is fixed, a special fitting and a channel for supplying coolant (coolant). Thanks to this design and the use of aqueous emulsion solutions, the cutting speed reaches 15-25 m/min for steel and 30 m/min for cast iron.

"Hydraulic drill" (click to enlarge): 1 - carbide insert, 2 - drill head, 3 - holder, 4 - coolant fitting

The new drill can be used on lathes, turret lathes and CNC machines.

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Naked diggers don't age 03.02.2018

American scientists have found that naked mole rats do not age and do not begin to die more often with age. This discovery is important for understanding the mechanism of aging.

Naked mole rats are one of the most mysterious creatures on Earth. They never actually develop cancer, are pain tolerant, and can survive without oxygen for up to 18 minutes. Now, researchers have discovered a new "superpower" of these animals.

Humans and the vast majority of mammals die according to a statistical relationship that Benjamin Gompertz discovered in 1825. According to the Gompertz distribution, the probability of death increases with age. In humans, it increases almost logarithmically: the probability of dying at 20 is ten times lower than at 60.

Scientists have been studying naked mole rats for 30 years. For each animal, they recorded the date of birth and date of death, as well as whether they died due to experiments or for some other reason. It turned out that the probability of death in naked mole rats is 0,0001 - regardless of the years lived, and even slightly decreases with age. They mature at about six months of age and have an average laboratory life of approximately six years. Some individuals can live up to 30 years of age.

Scientists believe that the cells of naked mole rats have a high activity of DNA repair systems, as well as chaperones - proteins that maintain the correct structure of other proteins. This allows animals not to accumulate genetic defects.

As the researchers emphasize, it is possible that naked mole rats do age, but much later than other mammals, and this process proceeds in an atypical way. Perhaps, after 20-30 years of age, diggers can no longer maintain the repair functions of the body, which wears out quickly as a result.

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