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).
Specification and setting data for a Hypoid Gear set.
| Identifier | ExFiles\Box 114\1\ scan0301 | |
| Date | 19th December 1939 | |
| CONCAVE GEAR TOOTH BEARING CONVEX GEAR TOOTH BEARING HYPOID GEARS SUMMARY NO. 1051 M'F'G.{Mr Griffiths - Chief Accountant / Mr Gnapp} SOFT OFFSET LAP GLEASON WORKS ROCHESTER, N.Y., U.S.A. PINION SETTINGS DEVELOPED SETTINGS 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: .650" BELOW CENTER 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°31' | 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.{Sir Henry Royce} 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 | *#4-17 1/2 I, 25°0' 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 | OUT 1.293" | RADIAL 3.900" 30 | VERTICAL | UP 3.679" | CRADLE + 70°38' 31 | MACH. CENTER TO BACK | 2.397" SLIDING BASE CUTTER AXIAL | ADV. .104" 3/10 RATIO CHANGE GEARS Nc 75 DR. 36 79 | STUD 90 100 DR. 57 54 | STUD 91 36 TEST ROLL | 30° CRADLE | 31°36' WORK PINION SETTINGS NO. | ROUGHING | 15" HYPOID GENERATOR FINISHING ROUGHING CUTTER SPECIFICATIONS 32 | DIAMETER: 9" | PT. WIDTH: .040-.020R | IN. BLADE V: 28°-0' | OUT. BLADE V: 14°-0' 33 | MACHINE ROOT ANGLE | 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 DR. 66 82 | STUD 77 69 | DRIVER 55 80 | STUD 68 57 TEST ROLL | 20° CRADLE | 67°54' WORK DEVELOPED SETTINGS NO. | | BOTTOM | TOP 44 | MACHINE ROOT V | 15°31' | 15°31' 46 | MACH. CENTER TO BACK | "C" TOPREM 4.645" 47 | CUTTER NUMBER | #21-17 1/2-0.B | .025"R #36-25"-1.B 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' CHANGE GEARS DRIVER 63 79 | STUD 70 62 | DRIVEN DR. 44 56 | STUD 63 72 | DN TEST ROLL | CRADLE 20° | WORK 75°41' TEST ROLL | CRADLE 20° | WORK 76°27' V & H CHECK SOFT GEAR | DRIVE: V +9 H -9 | COAST: TOE +9 H -9, HEEL -18 +19 | TOTAL 27 28 SOFT PINION | DRIVE: V -10 H +11 | COAST: TOE -10 H +11, HEEL +15 -18 | TOTAL 25 29 BACKLASH .004"-.006" CUSTOMER'S ORDER NO. 8919 SALES ORDER NO. A010086 NO. OF PAIRS 1 SOFT 3 HARD DATE 12/19/39 REMARKS: MADE OUT BY: M.{Mr Moon / Mr Moore} Lowe DATE: March 5 '48 CHECKED: Wm * THICKNESS AT MIDDLE OF FACE MACHINE SERIAL NO. USED FOR MASTER GEARS FORM ED{J. L. Edwards} 324 | ||