design calculation of drilling machine

... INTRODUCTION The majority of this text concerns the analysis of electric machinery and drive systems. The focus of this chapter is the use of these concepts for design. In particular, the design of a permanent-magnet ... & Sons, Inc. INTRODUCTION TO THE DESIGN OF ELECTRIC MACHINERY 15 616 INTRODUCTION TO THE DESIGN OF ELECTRIC MACHINERY however, no design is better than any of the others in both mass and loss. ... (15.3-3) FORMULATION OF DESIGN PROBLEM 609 15.9.  FORMULATION OF DESIGN PROBLEM At this point, we are ready to consider the design of the machine. There are many ways to formulate the design problem....

Ngày tải lên: 16/02/2014, 18:55

Ngày tải lên: 17/03/2014, 19:21

Ngày tải lên: 31/05/2014, 01:47

Ngày tải lên: 27/06/2014, 12:20

Ngày tải lên: 08/08/2014, 13:20

Ngày tải lên: 05/09/2013, 14:58

... and Computer Integrated Manufacturing. Printice-Hall, 1987. 2. Yoram Koren: Computer Control of Manufacturing Systems. McGraw-Hill, 1983. 3. Japanese National Research Institute: Mechanical ... bộ CNC xác định. MEL-Master dùng hệ chuyên gia xử lý theo thời gian thực. Bộ mô phỏng làm việc Off-line, giúp cho ngời vận hành quyết định và kiểm tra chế độ gia công tối u. Hệ MEL-Master tiến...

Ngày tải lên: 10/12/2013, 13:16

... current) and to the speed of rotation, through a constant determined with constructional features of the machine. Speed of rotation ω is the so-called angular speed of rotation in [rad/s] and ... Engineering  E Levi, 2001 1 STEADY STATE OPERATION OF DC MACHINES 1. INTRODUCTION Electric DC machines, as indeed any other type of electric machine, can be used to either produce electric energy ... rotor. Principle of operation of this assembly is illustrated by means of Fig. 1. Rotor winding is shown in a very simplified manner, as consisting of just one coil, connected to two segments of the commutator....

Ngày tải lên: 17/12/2013, 14:15

... Trends 573 14.3 Planning and Design of Heliports 577 14.4 Planning and Design of STOLports 595 14.5 Planning and Design of STOL Facilities 596 14.6 Planning and Design of Vertiports 600 References ... 471 11.9 Elements to Be Considered in Design of Air Freight Terminals 472 11.10 Example of Design of Middle-Technology Freight Terminal 474 11.11 Design of Highly Mechanized Cargo Terminal with ... in the updating of Chapter 12 in the area of pavement design. Acknowledgement is also due to the assistance of the following professionals and organizations in the preparation of an updated text: Andrew...

Ngày tải lên: 05/02/2014, 14:58

... detector efficiency based on theoretical calculations. Nowadays, the numerical calculation of efficiency of various types of gamma detectors has been a field of research. The Monte-Carlo modeling ... VNU Journal of Science, Mathematics - Physics 23 (2007) 99-104 99 Study on Monte-Carlo calculation of peak efficiencies of the superpure Hp Ge detector (Gmx) in ... 5.57 4. Conclusion The problem of photon self-absorption in gamma spectrometry of environmental samples has no simple solution because of the attenuation of photons depending on many various...

Ngày tải lên: 13/02/2014, 04:20

Ngày tải lên: 16/02/2014, 19:02

... re- sponse to the sound of a recording of Aretha Franklin; the feel of a warm whirlpool; the taste of a chocolate truffle; the smell of spoiled meat; the ac- celeration of a rollercoaster in a ... providing a brief review of these two perspectives, I synthesize them into the beginnings of a theory of aesthetics for design. Fi- nally, I turn to the problem of how to design beautiful artifacts. ... of individuals within that environment. Therefore, when the environment differs, so do the aes- thetic preferences. One manifestation of cultural phenomena is the emergence of schools of design...

Ngày tải lên: 19/02/2014, 17:20

Ngày tải lên: 07/03/2014, 10:20

Ngày tải lên: 08/03/2014, 01:20

Ngày tải lên: 08/03/2014, 14:20

... Declaration of Conformity of machinery Annex II 1 A (1) to (10) Đ383 The content of the EC Declaration of Conformity Annex II 1 B Đ384 The Declaration of Incorporation of partly completed machinery ... published in the Official Journal). Council Decision of 25 April 2006. Đ 2 The legal basis of the Machinery Directive The legal basis of the Machinery Directive is provided by Article 95 of the EC ... certain of the risks may result from the fact that the machinery is not complete or from the interface between the partly completed machinery and the rest of the machinery or assembly of machinery...

Ngày tải lên: 09/03/2014, 00:20

... 147 Calculation of Lindemann’s melting Temperature and Eutectic Point of bcc Binary Alloys Nguyen Van Hung * , Nguyen Cong Toan, Hoang Thi Khanh Giang Department of Physics, University of ... center of the bcc are localized in an elementary cell. Hence, the total number of atoms in an elementary cell is 2. Then if on average s is atomic number of type 1 and (2 - s) is atomic number of ... mean energy of the crystal consisting of N lattice cells is given by ( ) ∑ −+= ∑ = q qqqqq uMsusMN q 2 2 2 2 2 1 2 1 )2( ωωεE , (6) where, M 1 , M 2 are the masses of atoms of types 1 and...

Ngày tải lên: 14/03/2014, 13:20

... and phase of real vibration of atomic chain containing dopant atom have been derived. They contain Morse potential parameters characterizing vibration of each pair of atoms. Numerical calculations ... Trung Department of Physics, College of Science, VNU, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam Received 16 June 2008 Abstract. A new procedure for calculation and analysis of dispersion relation ... VNU Journal of Science, Mathematics - Physics 24 (2008) 223-230 223 Calculation of dispersion relation and real atomic vibration of fcc crystals containing dopant atom...

Ngày tải lên: 14/03/2014, 13:20