Solid Edge Engineering Reference
Design And Calculation Report

Spur Gear

GENERAL INFORMATION
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Date Created: 2010/11/29 01:27:11 PM
Generated by: Dan
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STRENGTH VALIDATION: Pass

Standard: ISO

INPUT DESIGN CONDITIONS
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DESIGN INPUT PARAMETERS

GEAR PARAMETERS
Desired Gear Ratio: 1 
(al) Pressure Angle: 20.00 ° 
(bt) Helix Angle: 0.00 ° 
Module: 1.00 mm 
Helix Angle Direction: Left 
(r) Root Fillet: 0.20 mm 
Gear Accuracy: 1 
Application Factor: 1.2 
Pinion Mounting Constant: 0.8 
Roughness Factor: 1 

CALCULATION PARAMETERS
Efficiency: 0.92 

Pinion:  
No. of Teeth: 20 
(DM) Mounting Hole Diameter: 6.00 mm 
(b) Face Width: 8.00 mm 
Power: 1000.00 W 
Torque: 9.54 Nm
Size Factor For Contact: 1 
Size Factor For Bending: 1 

Gear:  
No. of Teeth: 20 
(DM) Mounting Hole Diameter: 6.00 mm 
(b) Face Width: 8.00 mm 
Size Factor For Contact: 1 
Size Factor For Bending: 1 

PINION MOUNTING CONSTANT

Pinion:  
Pitch of Bearing: 80.00 mm 
Move from Shaft Center: 8.00 mm 
Medium Shaft Diameter: 25.00 mm 

Gear:  
Pitch of Bearing: 80.00 mm 
Move from Shaft Center: 8.00 mm 
Medium Shaft Diameter: 25.00 mm 

MATERIAL PROPERTIES USED FOR CALCULATIONS
Pinion Material: User 
Contact Stress [ MPa ]: 1140 
Bending Stress [ MPa ]: 605 
Gear Material: User 
Contact Stress [ MPa ]: 1140 
Bending Stress [ MPa ]: 390 

MATERIAL PROPERTIES APPLIED TO THE MODEL
Material: Steel 
Face Style: Steel 
Fill Style: ANSI32(Steel) 
Virtual Style: Machined steel 
Density: 7833.000 kg/m^3 
Coef. of Thermal Exp: 0.0000 /C 
Thermal Conductivity: 0.032 kW/m-C 
Specific Heat: 481.000 J/kg-C 
Modulus of Elasticity: 199947953.000 kPa 
Poission's Ratio: 0.290 
Yield Stress: 262000.766 kPa 
Ultimate Stress: 358527.364 kPa 
Elongation: 0.000 

DESIGN INPUT OPTIONS
Type of Gearing: External Gearing 
Output Geometrical Parameters: Find Center Distance 
Strength Calculation Method: Based on Bending and Contact Stress 
Correction Method: Correct the Tooth Profile 
Load Calculation: Find Speed 
Correction Applied: To Gear Ratio 
Strength Calculation Type: Find Material Strength at Minimum Safety Factor 
Face Width Values: User Specified 
Place with full Assembly Relation: No 


CALCULATE RESULTS
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OUTPUT DESIGN PARAMETERS

GENERAL RESULTS
Actual Gear Ratio: 1 
Total Unit Correction: 0 
Contact Ratio: 1.557 
Tangential Pressure Angle: 20.00 ° 
Operating Pressure Angle: 20.00 ° 
Tan. Operating Pressure Angle: 20.00 ° 
Base Helix Angle: 0.00 ° 
Product Center Distance: 20.00 mm 
Tangential Module: 1.00 mm 
(Pc) Circular Pitch: 3.14 mm 
Tangential Circular Pitch: 3.14 mm 
(Pb) Base Circular Pitch: 2.95 mm 
Corrected Root Fillet: 0.30 mm 

Pinion:  
Face Width Ratio: 0.4 
Unit Correction: 0 
Power: 1000.00 W 
Speed: 1000.974 rpm 
Torque: 9.54 Nm

Gear:  
Face Width Ratio: 0.4 
Unit Correction: 0 
Power: 920.00 W 
Speed: 1000.974 rpm 
Torque: 9.54 Nm

STRENGTH VALIDATION

Pinion:  
Allowable Bending Stress: 1029660.000 kPa 
Safety Factor in Bending: 1.3 
Allowable Pitting Stress: 2534150.000 kPa 
Safety Factor in Pitting: 1.4 
Material Bending Stress: 1352196.600 kPa 
Material Pitting Stress: 4169982.800 kPa 

Gear:  
Allowable Bending Stress: 1165890.000 kPa 
Safety Factor in Bending: 1.4 
Allowable Pitting Stress: 2539800.000 kPa 
Safety Factor in Pitting: 1.5 
Material Bending Stress: 1531102.600 kPa 
Material Pitting Stress: 4179280.400 kPa 

FORCES
Tangential Force: 954000.000 mN 
Radial Force: 347227.603 mN 
Normal Force: 1015225.595 mN 
Circumferential Velocity: 1.048 m/s
Resonance Speed: 0.000 rpm 
Axial Force: 0.000 mN 

BASIC DIMENSIONS

Pinion:  
(db) Base Diameter: 18.79 mm 
(da) Outside Diameter: 22.00 mm 
(d) Pitch Diameter: 20.00 mm 
(dr) Root Diameter: 17.50 mm 
Work Pitch Diameter: 20.00 mm 
(T) Chordal Thickness: 1.39 mm 
(ht) Chordal Thickness Height: 0.75 mm 
(M) Chordal Dimension: 7.38 mm 
(S) Tooth Thickness: 1.76 mm 

Gear:  
(db) Base Diameter: 18.79 mm 
(da) Outside Diameter: 22.00 mm 
(d) Pitch Diameter: 20.00 mm 
(dr) Root Diameter: 17.50 mm 
Work Pitch Diameter: 20.00 mm 
(T) Chordal Thickness: 1.39 mm 
(ht) Chordal Thickness Height: 0.75 mm 
(M) Chordal Dimension: 7.38 mm 
(S) Tooth Thickness: 1.76 mm 

FACTORS OF ADDITIONAL LOAD

Pinion:  
Dynamic Factor: 1 
Face Load Factor: 1.097 
Transverse Load Factor: 1 

Gear:  
Dynamic Factor: 1 
Face Load Factor: 1.078 
Transverse Load Factor: 1 

FACTORS FOR CONTACT
Elasticity Factor: 189.81 
Zone Factor: 2.495 
Contact Ratio Factor: 0.9024 
Lubricant Factor: 1 
Velocity Factor: 1.013 
Helix Angle Factor: 1 
Work Hardening Factor: 1 

Pinion:  
Life Factor: 1 

Gear:  
Life Factor: 1 

FACTORS FOR BENDING
Helix Angle Factor: 1 
Contact Ratio Factor: 0.7317 

Pinion:  
Form Factor: 3.414 
Stress Correction Factor: 2.056 
Life Factor: 1 
Notch Sensitivity Factor: 1.269 

Gear:  
Form Factor: 3.414 
Stress Correction Factor: 2.056 
Life Factor: 1 
Notch Sensitivity Factor: 1.269 

GEARING PARAMETERS
Limit Deviation of Helix Angle: 0.00 mm 
Limit Deviation of Helix Axis Parallelity (Fx): 0.00 mm 
Limit Deviation of Helix Axis Parallelity (Fy): 0.00 mm 

GEAR PARAMETERS

Pinion:  
Limit Deviation of Axial Pitch: 0.00 mm 
Limit Deviation of Basic Pitch: 0.00 mm 

Gear:  
Limit Deviation of Axial Pitch: 0.00 mm 
Limit Deviation of Basic Pitch: 0.00 mm 


END OF REPORT