java data matrix barcode

Topic: datamatrix · GitHub
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Import ISDatabase.h in GroceryListAppDelegate.m, and also add @synthesize database. Remember to release the database property in the dealloc function as well. Replace the following method:

The pinion mean diameter is defined by Eq. (10.34) or (10.35). For external mesh, dm = Co For internal mesh, dm = DI + do Co 2 (10.35) Do do 2 (10.34)

where Do = external gear outside diameter and DI = internal gear inside diameter. The helical factor C accounts for the partial helical overlap action which occurs in helical gears with a face-contact ratio mF 1.0. For helical gears with a facecontact ratio > 1.0, C is set equal to unity; for low-contact helical gears, it is C = where Z= F= mF = Cx = Cxn = b = 1 mF +

(10.36)

6 14

total length of line of action in transverse plane, in net minimum face width, in face-contact ratio contact height factor [Eq. (10.27)] contact height factor for equivalent normal helical gears [Eq. (10.37)] base helix angle, deg

- (void)applicationDidFinishLaunching:(UIApplication *)application { database = [[[ISDatabase alloc] initWithFileName:@"TestDB.sqlite"] autorelease]; NSLog(@"The database opened properly!"); // Configure and show the window [window addSubview:[navigationController view]]; [window makeKeyAndVisible]; }

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The Cxn factor is given by Cxn = R1nR2n RPRG (10.37)

where R1n = curvature radius at critical point for equivalent normal helical pinion, in R2n = curvature radius at critical contact point for equivalent normal helical gear, in

2 3 ~ 6

The curvature radii are given by R1n = RP Zc R2n = RG + Z R2n = RG Zc external gears (10.39) internal gears (10.38)

Running the project now will display the console output similar to Figure 5-6.

where Eq. (10.38) applies to external gears and Eq. (10.39) to either, as appropriate. Also, the term Zc is obtained from Eq. (10.32). The load-sharing ratio mN is the ratio of the face width to the minimum total length of the contact lines: mN = where F Lmin (10.40)

mN = load-sharing ratio F = minimum net face width, in Lmin = minimum total length of contact lines, in

Figure 15-1 Orb-Tracker schematic 1 (Orbit 360 rotator).

The calculation of Lmin is a rather involved process. For most helical gears which have a face-contact ratio of at least 2.0, a conservative approximation for the loadsharing ratio ratio mN may be obtained from mN = PN 0.95Z (10.41)

where pN = normal circular pitch in inches and Z = length of line of action in the transverse plane in inches. For helical gears with a face-contact ratio of less than 2.0, it is imperative that the actual value of Lmin be calculated and used in Eq. (10.40). The method for doing this is shown in Eqs. (10.42) through (10.45): Lmin = 1 [(P1 Q1) + (P2 Q2) + sin b + (Pi Qi) + + (Pn Qn)] where n = limiting number of lines of contact, as given by n= (Z/tan b) + F px (10.43) (10.42)