barcode generator vb.net source code CLUTCHES AND BRAKES 8.9 in Software

Encoding EAN / UCC - 13 in Software CLUTCHES AND BRAKES 8.9

CLUTCHES AND BRAKES 8.9
Reading EAN13 In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Print EAN / UCC - 13 In None
Using Barcode creation for Software Control to generate, create EAN 13 image in Software applications.
CLUTCHES AND BRAKES
Read EAN13 In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
Encode EAN-13 In C#.NET
Using Barcode generator for .NET Control to generate, create EAN / UCC - 13 image in VS .NET applications.
FIGURE 8.6 Centrifugal clutch. (BLM Automatic Clutch Limited.)
Paint European Article Number 13 In VS .NET
Using Barcode creator for ASP.NET Control to generate, create GS1 - 13 image in ASP.NET applications.
Encoding EAN-13 In Visual Studio .NET
Using Barcode generator for .NET Control to generate, create GS1 - 13 image in VS .NET applications.
it is a clutch. If one member is fixed and the torque is used to slow down or stop the rotating member, the device is a brake. A classification scheme for brakes is presented in Fig. 8.7. Brake Configuration. Band brakes can be made simple (not self-energizing) or differential (self-energizing). In designing a differential band brake (Fig. 8.19), care must be taken to ensure that the brake is not self-locking. Short-shoe brakes have been used for hoists. Centrifugal brakes employ speed as the actuating signal for short-shoe internal-block brakes and are used in a wide variety of applications. Drum brakes (Fig. 8.8) are used principally for vehicles, although seldom on the front axles of passenger cars. On the rear axles, drum brakes supply high braking torque for a given hydraulic pressure because one or both of the long shoes can be made self-energizing. For a leading shoe, the friction moment exerted on the shoe by the drum assists in actuating the shoe. The friction moment on a trailing shoe opposes the actuating moment. Thus a leading shoe is self-energizing, but a trailing shoe is selfdeenergizing. The leading-shoe trailing-shoe design (Fig. 8.8) provides good braking torque in forward or reverse. The two-leading-shoe design has an even higher braking torque in forward, but a much lower braking capacity in reverse. Very high braking torque is available from the duo-serve design. Here the friction force on the leading shoe assists in actuating the trailing shoe. One difficulty with drum brakes is instability. If a brake s output is not sensitive to small changes in the coefficient of friction, the brake is stable. But if small changes
EAN13 Printer In VB.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create EAN13 image in .NET applications.
Printing UCC - 12 In None
Using Barcode generation for Software Control to generate, create EAN128 image in Software applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
Printing Barcode In None
Using Barcode generation for Software Control to generate, create bar code image in Software applications.
ANSI/AIM Code 39 Drawer In None
Using Barcode drawer for Software Control to generate, create Code 39 Full ASCII image in Software applications.
CLUTCHES AND BRAKES 8.10
Encoding Data Matrix ECC200 In None
Using Barcode generation for Software Control to generate, create Data Matrix 2d barcode image in Software applications.
Painting GTIN - 13 In None
Using Barcode maker for Software Control to generate, create GTIN - 13 image in Software applications.
MACHINE ELEMENTS THAT ABSORB AND STORE ENERGY
EAN-8 Supplement 5 Add-On Printer In None
Using Barcode encoder for Software Control to generate, create European Article Number 8 image in Software applications.
Bar Code Reader In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
TABLE 8.1 Selecting the Right Clutch
Code 128 Code Set A Reader In VB.NET
Using Barcode scanner for VS .NET Control to read, scan read, scan image in .NET framework applications.
Generate EAN13 In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create EAN13 image in ASP.NET applications.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
ECC200 Scanner In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Decoding UPC-A Supplement 5 In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
CLUTCHES AND BRAKES 8.11
Bar Code Decoder In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
Bar Code Printer In None
Using Barcode creation for Online Control to generate, create barcode image in Online applications.
CLUTCHES AND BRAKES
FIGURE 8.7 Classification of brakes.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
CLUTCHES AND BRAKES 8.12
MACHINE ELEMENTS THAT ABSORB AND STORE ENERGY
FIGURE 8.8 Drum brake. (Chrysler Corporation.)
in the friction coefficient cause large changes in brake torque, the brake is unstable. It will tend to grab and squeal if the coefficient of friction increases. But if the coefficient decreases (say, because of a temperature increase), there will be a noticeable drop in capacity. Full disk brakes are used principally for industrial machinery.They are very much like full disk clutches in construction. Indeed, they are found in clutch-brake combination drives where both members of the drive are full disk in construction. Caliper disk brakes (Fig. 8.9) are now familiar components of vehicles, but they find applications in industrial equipment as well. The Chrysler brake shown uses a floating caliper. In this design, an automatic mechanism to adjust for pad wear can be incorporated easily. Generally caliper disk brakes are not self-energizing, although they can be. An advantage of the non-self-energizing disk brake is its great stability; it is relatively insensitive to changes in the coefficient of friction. Brake Actuation. Four principal actuation methods are shown in the classification chart of Fig. 8.7: mechanical, pneumatic (or hydraulic), electric, and automatic. Sometimes the methods are combined. The drum brake of Fig. 8.8 and the disk brake of Fig. 8.9 are both hydraulically operated. Both are intended for vehicles. In industrial applications, air is often the actuating fluid. The air-tube configuration in Fig. 8.10 can be used for a pneumatically operated clutch or brake. Electrically operated brakes most commonly use electromagnetic forces to actuate a full-disk-friction brake. However, a number of other designs are found (see Sec. 8.8). Automatically operated brakes are used for both transportation and industrial equipment. Sometimes manual operation is overridden by automatic actuation. Truck brakes are available with spring actuators that engage if the air pressure is lost. The air brake, as originally conceived by George Westinghouse for railroad applications, was of this fail-safe design. Electrically, hydraulically, and pneumatically operated brakes can all be designed for automatic operation. Antiskid brakes for automobiles and trucks superimpose on the usual manual control an automatic control that releases braking pressure if lockup and skidding are imminent.
Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website.
Copyright © OnBarcode.com . All rights reserved.