explain two input and output devices

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Ngày tải lên: 26/07/2014, 17:20

... the pickup ring holds two cores and lets broken tablets fall through to an area under the feeder table. Cores are picked from ring slots, carried to tablet press dies, and deposited in dies by ... the raising and lowering of the transport is accomplished by a cam. The shafts, F, E, and D are positioned by the frame of the machine. Special bell cranks support the transport and are interconnected ... breaks while the machine is running, the unsupported idler carrier falls to the base of the standard, and when the standard arrives at the sta- tion in the raceway adjacent to the cam C, the lug L on the...

Ngày tải lên: 22/10/2012, 14:26

... intermittent drive, the two rollers drive the output shaft and lock it during dwell periods. For each revolution of the input shaft, the output shaft has two motion periods. The output displacement ... number of lobes L 3 and L 4 on the gears 3 and 4. In the drawings, L 3 = 2 and L 4 = 3. Any two lobes on the two gears (i.e., any two lobes of which one is on one gear and the other on the ... near standstill. In the disengaged position, the angu- lar velocity ratio between the output and input shafts (the “gear” ratio) is entirely dependent upon the design angles α and β and independent...

Ngày tải lên: 22/10/2012, 14:26

... The input then drives the output with the bevel gears. Rotating the adjusting shaft in a plane at right angles to the input- output line changes the relative radial position of the input and output ... 138 134 TWELVE EXPANDING AND CONTRACTING DEVICES Parallel bars, telescoping slides, and other devices that can spark answers to many design problems. Fig. 1 Figs. 1 and 2 Expanding grilles are ... continuous rotary input motion into an output that oscillates the shaft back and forth. Sclater Chapter 5 5/3/01 11:47 AM Page 170 inputs, and z is the output. The motion of x and y in the same...

Ngày tải lên: 22/10/2012, 14:26

... ARRANGEMENTS Differential, duplex, and other types of screws can provide slow and fast feeds, minute adjustments, and strong clamping action. Rapid and slow feed. With left- and right-hand threads, slide motion ... forms. Here are two methods: in the upper figure, two opposite-hand threads on a single shaft; in the lower fig- ure, same-hand threads on independent shafts. Fig. 16 Opposite-hand threads make ... two single-bearing units are mounted in tandem on one of the parallel rails and two dual- bearing units are mounted in tandem on the other rail to with- stand any sideloads. The concave steel rollers...

Ngày tải lên: 22/10/2012, 14:26

... magnetic signal amplification. A rotating input avoids a lin- ear input and output of the simple windlass. Control and output ends of the mul- titurn bands are both connected to gears mounted ... motor, the maximum output speed will be 1200 = 3984 rpm, and the minimum output speed = 3984/11 = 362 rpm. Double-reduction system (Fig. 3). Solid sheaves are on both the input and output shafts, ... conveying, and elevating. STANDARD ROLLER CHAIN—FOR POWER TRANSMISSION AND CONVEYING SINGLE WIDTH—Sizes 5 ⁄ 8 in and smaller have a spring-clip connect- ing link; those 3 ⁄ 4 in and larger...

Ngày tải lên: 22/10/2012, 14:26

... motor com- parable in size and power to those used in standard reel-to-reel recorders, and a large bi-peripheral flywheel and sturdy capstan that reduces wow and flutter and drives the tape. A patent ... spherical disks and rollers. This also reduces operating stresses and wear. The input shaft runs through the unit and carries two oppos- ing spherical disks. The disks drive the double-sided output disk ... of the input shaft. Input shaft a carries spur gear c, which has approximately twice the face width of spur gears f and d mounted on output shaft b. Spur gear c meshes with idler e and with...

Ngày tải lên: 22/10/2012, 14:26

... Page 317 336 LINKAGES FOR BAND CLUTCHES AND BRAKES Fig. 1 An outside band clutch operated by a roller and cone. Fig. 2 An outside band clutch made as two half wrap bands with an interme- diate ... outside band clutch made as two full wrap bands with an intermediate equalizer. Fig. 4 An inside band clutch operated by a yoke having movement along the shaft. Fig. 5 A two- way acting band brake ... constant velocity and there is axial freedom. Fig. 2 This coupling consists of two universal joints and a short shaft. Velocity transmission is constant between the input and output shafts if...

Ngày tải lên: 22/10/2012, 14:26

... dis- placement. In this case, two floating rolls are combined with two separate con- trollers and actuators. The first controls the in-feed speed and tension of the paper stock, and the second controls ... relative speed between the two units, at all speeds and loads. The variations caused by oil leakage and sim- ilar factors are compensated automati- cally by the idler roll and linkage. They adjust ... torque- splitting pinion to two torque-splitting gears, then from the two torque-splitting gears through the associated two bull pinions to the bull gear, then to the output shaft. The purpose...

Ngày tải lên: 22/10/2012, 14:26

... vane ends are rounded for line contact. (B) Two vanes pivot in the housing and are driven by an eccentrically mounted disk; vanes slide in glands and are always radial to the housing, thus providing ... POWER Cartridge-actuated devices generate a punch that cuts cable and pipe, shears bolts for fast release, and provides emergency thrust. Sclater Chapter 11 5/3/01 1:17 PM Page 402 Fig. 1 Automatic weighing and ... simplicity, and cost. Fig. 1 A bimetallic sensor is simple, compact, and precise. Contacts mounted on low-expansion struts determine slow make- and- break action. A shell contracts or expands with...

Ngày tải lên: 22/10/2012, 14:26

... ψ 13 and ψ 12 . This establishes points A′ 2 , A′ 3 and A′ 4 , but here A′ 3 and A′ 4 coincide because of symmetry of A 3 and A 4 about A 0 B 0 . 4. Draw lines A 1 A′ 2 and A 1 A′ 4 , and the ... however, because it would then have only two degrees of freedom and would, consequently, require two inputs to control the output. Simply constraining two adjacent links would not solve the problem. ... is the output and it replaces the center gear in Fig. 1. Fig. 7 A more practical ring-gear and slider arrangement. The output is now from the smaller gear. Fig. 8 Jensen’s model of the ring-gear and...

Ngày tải lên: 22/10/2012, 14:26

... than 5 ms/step. An input of two simple input pulse signals will operate it. This motor can index gears in MEMS such as locking devices, counters, and odometers. It was built with Sandia’s four-layer ... capability and verifying commercial demand. Initially ADI built these devices by interleaving, com- bining, and customizing its internal manufacturing processes to produce the micromechanical devices ... lowered and the next layer is applied. This procedure is repeated until the 3D model is completed. A fault detection system determines the quality and thickness of the wax and plastic layers and...

Ngày tải lên: 22/10/2012, 14:26

... Technologies Group, Radford, VA • Ledex Actuation Products, TRW Control Systems, Vandalia OH • Sandia National Laboratories, Sandia Corporation, Albuquerque, NM • SolidWorks Corporation, Concord, MA • ... Data Sclater, Neil. Mechanisms and mechanical devices sourcebook / Neil Sclater, Nicholas P. Chironis.— 3rd ed. p. cm. Rev. ed of: Mechanisms & mechanical devices sourcebook / [edited by] ... applications beyond NASA’s immediate objectives in space science and requirements for specialized equip- ment. The names of the scientist/inventors and the NASA facilities where the work was performed have...

Ngày tải lên: 22/10/2012, 14:26

... vehicle and plate. POSITIVE LOCKING AND QUICK-RELEASE MECHANISM The object here was to design a simple device that would hold two objects together securely and quickly release them on demand. One ... left-handed threads, • An eye on a shank with external right- handed threads, and • A flanged collar with left-handed external threads to mate with the shank of the first- mentioned eye, and right-handed ... is bulky and diffi- cult to use, requires periodic mainte- nance, and poses the threat of leakage of hydraulic fluid, which can contaminate the clean room. The actuator rests on a stand and imparts...

Ngày tải lên: 22/10/2012, 14:26

... angular-momentum-balanced, robot 48 ball -and- cone 250 ball -and- disk, and 251 ball -and- screw 5 12 bearings and roller 117 belt 12 224 257 belt -and- chain, variable speed 224 cam for ... 121 six-bar 119 drive bearing -and- roller 117 disk -and- roller 117 three-gear 119 long 118 triple harmonic 121 Whitworth quick-return 121 wheel -and- slider 121 worm 109 eccentric ... 158 ring gear and slider 450 ring and slider, Jenson’s 450 robot 34 rocker arm and disk 123 roller-dwell 119 rotary, short-dwell 112 rotary-to-reciprocating motion and dwell 116...

Ngày tải lên: 22/10/2012, 14:27

... first and second editions, (published in 1991 and 1996, respectively), that has been supplemented by new and revised articles reflecting present and future trends in mechanical engineering and ... Mechanisms & Mechanical Devices Sourcebook, a well illus- trated reference book containing a wide range of information on both classical and mod- ern mechanisms and mechanical devices. This edition ... illustra- tions and descriptions of basic mechanisms and mechanical devices, accompanied by useful applications information. This material has been culled from a wide range of books and magazines...

Ngày tải lên: 22/10/2012, 14:27