There is no doubt: is the time to learn English at once for all. Many people remained outside the labour market, or has waived the right to travel abroad feel unable to communicate in which is now the universal language. A real shame, since today study English is more within the reach of everyone than ever, thanks to the options offered by Internet. That Yes, many prospective students think that it is not the best way of learning in comparison with other alternatives why, Let’s break down the pros and cons of the different ways of learning English, to be able to decide our best choice with all possible information. Learn English in classroom benefits:-students have a time set for classes, what drives them to establish a routine. -A real teacher is always available to answer questions and solve doubts; In addition, empathy with students promotes learning and communication.
-Make relationships with other students. Disadvantages:-there is that move and adapt to a few hours. -The classes are more expensive. -If a class is lost, information is not retrieved. Learn English online advantages – online English courses are available 24 hours a day, without leaving home; rather than adapt to the schedules will be schedules that adapt to the students. -It is a very economical option.
-Day today there are tutorials on video that perfectly simulate classroom activity classes. -Students may in some cases have custom guardians who respond and solve your questions at any time of the day. -Courses offered all levels, so that students go beating them at their own pace. Disadvantages – Imply one commitment to less than classes classroom activity, so it is easier to leave. -You will learn more slowly than if we study in an English speaking country. Learn English abroad advantages – there is no better place to study a language as the country in which it is spoken: you learn better and much faster. -In addition to the language culture of the place is known to fund. -Friends become and live a unique experience. Disadvantages – Most expensive study in the same country, and much more that make online courses. -Many people have to take vacation at work to make the courses, thus losing days of rest. -The trend of students is relate only to those who speak your language, so learn much less than expected. In summary, learn English online is revealed as a comfortable, efficient and intelligent way to be able to master this language. You can be the best way to start learning and catch ease, then opt for more complex and less economic options. Through the Internet, the language of Shakespeare is now within the reach of everyone.
This marked the starting point marked on the scale ruler and a focus on machine bed. 4.3.3.Nulevaya point zero point of the details of W part W (‘part zero) coincides with the beginning of the coordinate system details. It is freely chosen by the programmer and specifies a point in the drawing of finished parts, which are calculated from all dimensions. The difference between zero points and details of the machine M W NC registered as an offset of zero. This characteristic of all Programmable coordinate values are at zero point of detail.
4.3.4. The zero point of the program zero point of the program RO RO (‘null treatment’) – the point at which the tool is the beginning of treatment. Zero point W parts usually unsuitable for this purpose, as, for example, blanks it is inside. It is advisable to choose the zero point of the program so that you can easily replace the part or tool. 5. Methods Programming 5.1. Absolute programming when programming indicates the absolute position of a given endpoint. Signs of the coordinates determine which of the four quadrants is this point.
Coordinates given end point is always defined relative to a fixed reference point (usually zero parts W). Position of the reference point is irrelevant to the end point. 5.2. Relative When programming is the path relative programming tool. The sign determines the direction of the tool. The desired end point is always associated with their coordinate values pre- specified position tool (programming in increments). Position of the reference point is crucial to achieve a given endpoint. 8. Types of interpolation 8.1.Lineynaya interpolation. With a linear interpolation movement in the mode of labor supply is carried out simultaneously in one or more axes of the machine to get straight. 8.2.Krugovaya interpolation with circular interpolation movement is carried out simultaneously in two by machine axes in order to reproduce the arc. To determine the exact range of the circuit control device, the following data: a) The direction of rotation in a circular motion to the operating direction by using G 02 (clockwise) or G 03 (clockwise rotation) b) The coordinates of the endpoint) interpolation parameters I, J and K to determine the position of the center of the circle: I-coordinate of the center axis X J-coordinate of the center in Y direction to – Coordinate of the center in the Z direction Regardless of whether the values are the coordinates for the final arc absolutely (G90) or relatively (G91), the center parameters are programmed by a relative method. Here the coordinates determined relative to the starting point of the arc. Regardless of whether the values are the coordinates for the final arc absolutely (G90) or relatively (G91), the center parameters are programmed by a relative method. Here the coordinates determined relative to the starting point of the arc. Prepared according to the textbook “Numerical control in the production of ‘Heinz Petzold, Dipl. Ing.