MECHANICAL POWER PRESS SAFETY docx

... crankshaft in the crown of the press and moves vertically between the uprights. 3 4 2. Functional Types of Mechanical Power Presses All mechanical power presses use an electric motor as ... feet square. Mechanical power presses may be used to produce parts as small as wire terminals to as large as a truck frame. Two general frames used for mechanical power pres...

Ngày tải lên: 01/04/2014, 00:20

... steam power plant. sponding to an absolute pressure in the condenser of 1 in (25.4 mm) Hg, obtained from the steam tables. The specific volume of the saturated liquid at this temperature and pressure ... in the heaters. With a 25 percent safety factor, total head ϭ (1.25)(140) ϭ 175 ft (53.3 m). 5. Compute the horsepower required to drive the pump The brake horsepower input bhp i ϭ (gpm)(H...

Ngày tải lên: 17/12/2013, 11:15

... With additional mechanical or electro- 3 Figure 1-1 This multiaxis X-Y-Z motion platform is an example of a motion control system. 4 Chapter 1 Motor and Motion Control Systems mechanical components ... Cleaner, quieter operation without oil or air leakage. Electric-powered motion control systems do not require pumps or air compressors, and they do not have hoses or piping that can leak Fi...

Ngày tải lên: 22/12/2013, 20:18

... at position 2 (final kinetic energy). Power Power is defined as work done in a given time. (1.3.20) where v is velocity. Important units and conversions of power are Advantages and Disadvantages ... +       FFF V x V y V z xyz ∂ ∂ ∂ ∂ ∂ ∂ Mechanics of Solids 1-39 Conservation of Mechanical Energy Conservation of mechanical energy is assumed if kinetic energy (T) and potential ener...

Ngày tải lên: 23/12/2013, 00:15

... lb/in 2 (172 kPa) flow pressure] 35.0 2.210 1 ؆ (25.4 mm) flush valve [15 lb/in 2 (103 kPa) flow pressure] 27.0 1.703 3 ⁄ 4 ؆ (19.0 mm) flush valve [15 lb/in 2 (103 kPa) flow pressure] 15.0 0.946 Drinking ... amount of pressure available at the topmost fixture Assume conditions of no flow in the system and calculate the amount of pressure available at the topmost fixture in excess of the minimum pres...

Ngày tải lên: 25/12/2013, 23:18

... CONTROL 21.27 TABLE 8 Allowable Bearing Pressures for Screws Application Material Screw Nut Allowable bearing pressure, psi MPa Sliding speed at thread pitch diameter m/ min Hand press Steel Bronze 2,500–3,500 ... Q p (gpm) Input horsepower, H p (hp) Pump speed, N p (rpm) (a) Overall efficiency, E pod (%) FIGURE 1 (a) Typical pump performance curves relate input horsepower, fluid outlet flow...

Ngày tải lên: 25/12/2013, 23:19

... Terms of Use as given at the website. MECHANICAL AND ELECTRICAL BRAKES MECHANICAL AND ELECTRICAL BRAKES 24.13 TABLE 5 Coefficients of Friction and Allowable Pressures Material ␮ p, lb/in 2 kPa Asbestos ... maximum value of the pressure, p, and the product of the pressure and the velocity, pV,to those given for shoe brakes, based on the projected area of the brake. The maximum pressure wil...

Ngày tải lên: 23/01/2014, 05:20

... is pressed against the input shaft by flat spring F. The feed rate is easily varied by changing the angle of the disk. This arrangement can produce an extremely slow feed with a built-in safety factor ... previous posi- tions throughout the rotation of the input ring crank. The high-volume 2500-ton press is designed to shape such parts as connecting rods, tractor track links, and wheel h...

Ngày tải lên: 23/01/2014, 05:20

... remote powered device is IEEE 802.3af compliant. If the powered device is not designed to accept power, the controller will not send power. Q: What is PoE's distance limitation of power? A: ... Watts of power on every port simultaneously • Redundant power capability on all designs • Modular SNMP and Power Supply chasis design, allowing in-service field upgrades to redunda...

Ngày tải lên: 24/01/2014, 11:20

... Thuong 15 Mr Thuong 16 Mr Thuong 17 Tài liệu hướng dẫn các thao tác cơ bản trên Power Point 2003 A- Khởi động Power Point (xin được viết tẳt là PwP) Sau khi đã khởi động Mycomputer, chúng ta

Ngày tải lên: 26/01/2014, 22:20