From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Summary of specifications and settings for Hypoid Gears, reference no. 1051.
| Identifier | ExFiles\Box 114\1\ scan0303 | |
| Date | 19th December 1939 | |
| CONCAVE (GEAR TOOTH BEARING) HYPOID GEARS SUMMARY NO. 1051 GLEASON WORKS ROCHESTER, N. Y., U. S. A.{Mr Adams} FOR: ROLLS ROYCE LTD COMBINATION: 12 x 43 DRIVE PRESSURE V: 18°15' REVERSE PRESSURE V: 24°15' CONE DISTANCE: 4.442" GEAR FACE: 1.188" GEAR D.P.: 5.059 PINION SPIRAL V: 44°49' GEAR SPIRAL V: 35°10' OFFSET OF PINION BELOW CENTER: .650" GENERAL DIMENSIONS NO. | ITEM | PINION | GEAR 1 | PART NUMBER | RG{Mr Rowledge}130 | RG{Mr Rowledge}131 2 | REF. B. P. NUMBER | | 3 | ADDENDUM | | .091" 4 | WORKING DEPTH | | .323" 5 | WHOLE DEPTH | .366" | .364" 6 | FACE ANGLE | 20°9' | 74°16' 7 | PITCH ANGLE | 17°8' | 73°6' 8 | ROOT ANGLE | 15°36' | 69°35' 9 | DEDENDUM ANGLE | | 3°31' 10 | OUTSIDE DIAMETER | 3.190" | 8.553" 11 | CONE CENTER TO CROWN | 4.347" | 1.205" 12 | CONE CENTER TO BACK | 4.702" | 2.286" 13 | NORMAL CHORD. ADDEN. | * .206" | * .079" 14 | NORMAL CHORD. THICK. | * .275" | * .166" 15 | HAND OF SPIRAL | L | R 16 | CUTTING METHOD | FIXED SETTING | SPREAD BLADE 17 | MOUNTING DISTANCE | 4.525" | 2.350" 18 | SOFT MOUNTING DISTANCE | 4.528" | 19 | DRIVER | PINION ROTATION GEAR SETTINGS ROUGHING CUTTER SPECIFICATIONS 20 | DIAMETER: 9", POINT WIDTH: .050".025"R, IN. BLADE V: 18°-0', OUT. BLADE V: 24°-0' 21 | CUTTER AXIAL POSITION | ADV. .005" 15" SPIRAL BEVEL ROUGHER SETTINGS 22 | MACHINE ROOT V | 69°35' 23 | HORIZONTAL | OUT 1.793" 24 | ANGULAR | UP 16°26' FINISHING CUTTER SPECIFICATIONS 25 | CUTTER NUMBER | #42 17½ L .25"O 26 | FINISHING CUTTER DIAM. | 9" 27 | FINISHING POINT WIDTH | .090" .025"R 15", No 16 SPIRAL GENERATOR SETTINGS 28 | MACHINE ROOT V | 69°35' 29 | HORIZONTAL | RADIAL 1.293" 30 | VERTICAL | RADIAL 3.900" 31 | MACH. CENTER TO BACK | CRADLE ∢ 70°38', 2.397" SLIDING BASE 32 | CUTTER AXIAL | ADV. .104" 3/10 RATIO CHANGE GEARS Nc 75 33 | DR: 36, STUD: 90, DN | DR: 54, STUD: 56 34 | 79, 100 | 57, 91 TEST ROLL 35 | CRADLE 30°, CRADLE 31°36' WORK PINION SETTINGS ROUGHING | DEVELOPED SETTINGS NO. | | BOTTOM | TOP | #16 HYPOID GENERATOR FINISHING | BOTTOM | TOP ROUGHING CUTTER SPECIFICATIONS 32 | DIAMETER: 9", PT. WIDTH: .040".020"R, IN. BLADE V: 28°-0', OUT. BL. V: 14°-0' 33 | MACHINE ROOT ANGLE | 15°31' | 15°31' 34 | CUTTER AXIAL LOCATION | ADVANCE .005" 35 | MACH. CENTER TO BACK | 4.735" 15" SPIRAL BEVEL ROUGHER SETTINGS 36 | HORIZONTAL | OUT 1.254" 37 | ANGULAR | DOWN 14°13' 15" #16 HYPOID GENERATOR SETTINGS 38 | HORIZONTAL | OUT .856" 39 | VERTICAL | DOWN 3.192" 40 | OFFSET OF BLANK | 0 41 | RADIAL | 3.305" 42 | CRADLE ∢ | 285°0' 3/10 RATIO CHANGE GEARS Nc 75 43 | DR: 66, 82. STUD: 77, 69. DN: | DR: 44, 56. STUD: 63, DN: 72 TEST ROLL | CRADLE 20° CRADLE 67°54' WORK #16 HYPOID GENERATOR FINISHING 44 | MACHINE ROOT ∢ | 15°31' | 15°31' 45 | MACH. CENTER TO BACK | 4.423" | 4.645" 46 | CUTTER NUMBER | #21-17½-0.8 | #36-25-1.B 47 | CUTTER NUMBER O.P. | | .025"R 48 | POINT DIAMETER | 8.800" | 9.140" 49 | OFFSET OF BLANK | DOWN .750" | DOWN .637" 50 | CUTTER AXIAL LOCATION | WITHDRAW .148" | WITHDRAW .266" 51 | HORIZONTAL | OUT .670" | OUT 1.719" 52 | VERTICAL | DOWN 3.722" | DOWN 2.994" 53 | CUTTER SPINDLE V | DOWN 0°40' | DOWN 2°34' 54 | CUTTER COLUMN V | IN 0°41' | IN 2°25' RATIO CHANGE GEARS DRIVER | STUD | DRIVEN | CHANGE GEARS | DRIVER | STUD | DRIVEN 55, 68 | 80, 57 | | | 63, 70 | 79, 62 CRADLE: 20°, WORK: 75°41' | TEST ROLL | CRADLE: 20°, WORK: 76°27' V & H CHECK GEAR WITH SOFT PINION | DRIVE | TOE | HEEL | TOTAL | COAST | TOE | HEEL | TOTAL V | +9 | -18 | 27 | V | -10 | +15 | 25 H | -9 | +19 | 28 | H | +11 | -18 | 29 BACKLASH .004"-.006" CUSTOMER'S ORDER NO.: 8919 SALES ORDER NO.: AD10086 NO. OF PAIRS: 1 SOFT 3 HARD DATE: 12/19/39 REMARKS: MADE OUT BY: J.{Mr Johnson W.M.} M.{Mr Moon / Mr Moore} Cove DATE: March 5 40 CHECKED: Hemy * THICKNESS AT MIDDLE OF FACE MACHINE SERIAL NO. USED FOR MASTER GEARS FORM ED{J. L. Edwards} 324 | ||