barcode generator vb.net code BELT DRIVES 14.12 in Software

Creator EAN-13 in Software BELT DRIVES 14.12

BELT DRIVES 14.12
Read EAN-13 In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
EAN13 Encoder In None
Using Barcode generator for Software Control to generate, create EAN-13 Supplement 5 image in Software applications.
POWER TRANSMISSION
GS1 - 13 Reader In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Drawing GS1 - 13 In C#.NET
Using Barcode printer for VS .NET Control to generate, create EAN13 image in .NET framework applications.
FIGURE 14.5 Stress and power transmission capacity.
Generate EAN / UCC - 13 In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create EAN / UCC - 13 image in ASP.NET applications.
Paint GTIN - 13 In Visual Studio .NET
Using Barcode encoder for .NET Control to generate, create EAN 13 image in .NET framework applications.
FIGURE 14.6 Examples of crossed belt drives.
GTIN - 13 Encoder In VB.NET
Using Barcode generation for .NET Control to generate, create EAN-13 image in .NET framework applications.
Generating USS Code 39 In None
Using Barcode encoder for Software Control to generate, create Code 39 Extended 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.
Barcode Drawer In None
Using Barcode generation for Software Control to generate, create barcode image in Software applications.
Paint Bar Code In None
Using Barcode printer for Software Control to generate, create bar code image in Software applications.
BELT DRIVES 14.13
Data Matrix ECC200 Creator In None
Using Barcode drawer for Software Control to generate, create DataMatrix image in Software applications.
EAN13 Generation In None
Using Barcode generator for Software Control to generate, create EAN13 image in Software applications.
BELT DRIVES
Drawing EAN / UCC - 8 In None
Using Barcode printer for Software Control to generate, create EAN8 image in Software applications.
Generate Barcode In Java
Using Barcode generation for Java Control to generate, create barcode image in Java applications.
FIGURE 14.7 Belt drives with pulleys in different planes.
Create USS Code 39 In None
Using Barcode generator for Excel Control to generate, create Code 39 image in Office Excel applications.
Generate ANSI/AIM Code 128 In VS .NET
Using Barcode maker for Reporting Service Control to generate, create Code 128 Code Set A image in Reporting Service applications.
The minimum shaft tensioning force Fw required for nonpositive-type force transmission can be produced as shown in Figs. 14.11 to 14.14. 1. Pretensioning by belt strain: The belt is cut to such a length that it is elastically preloaded when it is placed on the pulleys. Since both the forces F in the belt sides and the shaft initial tensioning force are reduced by the action of centrifugal forces, f has to be added to the initial tension of the belt to ensure proper transmission of peripheral forces by friction. 2. Pretensioning by adjustment of center distance: The shaft tensioning force Fw is produced by shifting the driving motor on a slide. The belt drive may be preloaded either by adjustment of a threaded spindle or by spring action or weighting. 3. Pretensioning by means of a belt tightener acting on the slack side: The slack side of the belt is provided with a pulley to tighten it with its own weight or by means of counterweights or by spring action and increase the arcs of contact on
UPC A Generator In Visual Basic .NET
Using Barcode creation for VS .NET Control to generate, create UPCA image in Visual Studio .NET applications.
Painting Bar Code In Java
Using Barcode creator for Java Control to generate, create barcode image in Java 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.
Painting Code 128 Code Set C In Objective-C
Using Barcode encoder for iPhone Control to generate, create Code 128 image in iPhone applications.
Barcode Drawer In None
Using Barcode creator for Microsoft Excel Control to generate, create barcode image in Microsoft Excel applications.
BELT DRIVES 14.14
POWER TRANSMISSION
FIGURE 14.8 Step pulleys.
FIGURE 14.9 Cone pulley.
FIGURE 14.10 Cone-pulley drive.
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.
BELT DRIVES 14.15
BELT DRIVES
FIGURE 14.11 Pretensioning by belt strain.
FIGURE 14.12 Pretensioning by adjustment of center distance.
FIGURE 14.13 Pretensioning with a belt tightener.
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.
BELT DRIVES 14.16
POWER TRANSMISSION
both the driving and the driven pulleys. The belt tightener produces a constant force F2 for all operating conditions but increases the bending frequency fb, thus reducing the safety stress of the belt. Taking this into consideration, we see that the belt tightener used should have a minimum diameter equaling that of the smaller pulley, if possible. 4. Pretensioning by torque making use of a rocker or pivoting pulley: Figure 14.14 shows an arrangement with an eccentric pulley shaft pivoting the motor pulley shaft. The pulley is driven by a FIGURE 14.14 Pretensioning by torque. gear assembly. The shaft tensioning force Fw increases almost in proportion to the tooth force FZ, and with the correct ratio of h2/h1, adapts automatically to the specific torque to be transmitted. Belt slipping is impossible with this method of pretensioning. For all belt pretensioning methods using tensioning devices which can be adjusted during operation of the drive (e.g., methods 2 to 4 described above), the shaft tensioning force Fw and the usable forces F 1 and F2 in the belt sides are not influenced by centrifugal force. Centrifugal force increases the belt stress by f, though.
14.2 FLAT-BELT DRIVE
Calculations for flat-belt drives are based on Eytelwein s fundamental equation of belt friction: F1 = exp F2 180 (14.29)
For calculations for a belt drive, the arc of contact of the smaller pulley is substituted for the arc of contact , since the belt slips at the smaller pulley first, and the active arc of contact w is not known. The transmissible power P is calculated from the peripheral forces Fu = F 1 F2 = F2 exp and the belt velocity v and is expressed by P1 = v1Fu P2 = v2 Fu The belt velocities are v1 = n1d1 v2 = n2 d2 (14.32) (14.31) 1 180 (14.30)
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.