Gear Geometry and Applied Theory Episode 3 Part 8 docx

... 30 2 Centrodes circular gears, of, 38 , 45, 49, 50, 115, 137 , 211, 274, 280 , 288 , 289 , 296, 2 98, 35 2 noncircular gears, of, 31 8, 32 2 33 4, 33 7, 33 8, 34 1, 34 3 34 6, 34 8, 34 9, 35 5, 35 6, 35 9, 36 0 Circular pitch, 39 0 Clearance, ... types cone, of, 82 , 83 , 88 , 1 83 , 185 , 186 helicoid, 90–95 involute screw, 82 , 83 , 93, 95, 185 , 547, 570, 5 73, 575,...

Ngày tải lên: 08/08/2014, 12:21

... 1: 28 19 .8 Geometry and Generation of F-I Worms (Version I) 5 93 and b = ρ cos α n . Equations (19 .8. 2) to (19 .8. 4) yield x c =−(ρ sin θ + d) cos ν y c = (ρ sin θ +d) sin ν z c = ρ cos θ −b. (19 .8. 7) The ... γ c . (19 .8. 18) Parameters θ c and ν in Eqs. (19 .8. 16) and (19 .8. 18) are related with the equation of meshing, tan θ c = E c − p cot γ c − d cos ν b cos ν + (E...

Ngày tải lên: 08/08/2014, 12:21

... R u ± P w 2 2 . (21 .3. 9) The upper and lower signs in Eqs. (21 .3. 8) and (21 .3. 9) correspond to the concave and convex sides of the gear tooth surfaces, respectively. The unit normal to the gear generating ... of equations (21 .3. 13) and (21 .3. 14) or (21 .3. 13) and (21 .3. 16) enables us to represent  (a) 2 in two-parameter form as R (a) 2 (θ g ,ψ 2 ) = r (a) 2 (s g (...

Ngày tải lên: 08/08/2014, 12:21

... 2:1 6 58 Spiral Bevel Gears represented as follows: tan 2σ (g2) = −2c 13 c 23 c 2 23 − c 2 13 − (k g − k u )c 33 k q − k s = −2c 13 c 23 c 33 sin 2σ (g2) k q + k s = k g + k u + c 2 13 + c 2 23 c 33 . (21.6.7) Here, c 13 =−k g v (g2) g +  n ... applied: tan 2σ (1p) = −2d 13 d 23 d 2 23 − d 2 13 − (k f − k h )d 33 k t − k p = −2d 13 d 23 d 33 sin 2σ...

Ngày tải lên: 08/08/2014, 12:21

... with two pairs of gears, 1–2 and 3 4, being in internal meshing. Gear 1 is fixed, planet gears 2 and 3 have a joint Figure 23. 2 .3: Planetary gear train with internal meshing of gears. P1: GDZ/SPH ... mechanisms of Figs. 23. 2.2 and 23. 2 .3. The gear ratio m (c) 14 is negative for a planetary gear mechanism with mixed-type meshing of gears 1–2 and 3 4, as the combination...

Ngày tải lên: 08/08/2014, 12:21

... 1)2π n  δ (k) 3 < 2π N 3  ( 23. 3.9) δ (k) 3 δ (k) 1 = N 1 N 3 . ( 23. 3.10) (ii) Equations ( 23. 3 .8) to ( 23. 3.10) yield the following relation: (k − 1)(N 1 + N 3 ) n = m (k) 1 + m (k) 3 (k = 2, ,n) ( 23. 3.11) (iii) ... m (k) 1 ,m (k) 3 , δ (k) 1 , and δ (k) 3 (k = 1, ,n) Equations ( 23. 3 .8) and ( 23. 3.9) and inequalities for δ (i ) 1 and δ (i ) 3 yield...

Ngày tải lên: 08/08/2014, 12:21

... (Fig. 25.1.1), and y 1 (u c ,θ c ,ψ) + z 1 (u c ,θ c ,ψ) tan λ p = 0. (25 .3. 3) Equations (25 .3. 1) and (25 .3. 3) yield F (u c ,θ c ,ψ) = 0. (25 .3. 4) The system of Eqs. (25 .3. 2) and (25 .3. 4) represents ... forging of a gear. Generation of conventional spiral bevel gears and hypoid gears by the CNC 746 P1: GDZ/SPH P2: JXR CB672-26 CB672/Litvin CB672/Litvin-v2.cls February 27,...

Ngày tải lên: 08/08/2014, 12:21

... Mechanism and Machine Theory, 10(5), 36 5 37 3. Litvin, F. L., & Gutman, Y. 1 981 . Methods of Synthesis and Analysis for Hypoid Gear Drives of Formate and Helixform. Parts 1, 2, and 3. ASME Journal ... 2:52 References 791 Litvin, F. L. 1 989 . Theory of Gearing. Washington, D.C.: NASA RP-1212 (AVSCOM 88 -C- C 035 ). Litvin, F. L. 1994. Gear Geometry and Applied T...

Ngày tải lên: 08/08/2014, 12:21

... undercutting in area “A” and tooth pointing in area “B” [Fig. 18. 1.4(a) and Sections 18. 6 and 18. 7]. 18. 2 AXODES, PITCH SURFACES, AND PITCH POINT The concepts of axodes, pitch surfaces, and pitch point ... 18. 5.2(a) and 18. 5.2(b) indicate the angle γ formed by negative axis z m and z a , the radii r ps and r p2 of pitch circles of the shaper and the face -gear, and...

Ngày tải lên: 08/08/2014, 12:21

... Y 1 =−r 1 cos φ 1 . ( 13. 5 .3) P1: GDZ/SPH P2: GDZ CB672- 13 CB672/Litvin CB672/Litvin-v2.cls February 27, 2004 0 :36 35 8 Cycloidal Gearing Figure 13. 4 .3: Lines of action of cycloidal gears. Watch Gearing Cycloidal ... GDZ CB672- 13 CB672/Litvin CB672/Litvin-v2.cls February 27, 2004 0 :36 13. 6 Internal Pin Gearing 36 5 Figure 13. 5.6: Rack-cutter tooth profile. 13. 6 INTERNAL PI...

Ngày tải lên: 08/08/2014, 12:21