Solid Edge Engineering Reference
Design And Calculation Report

Spur Gear

GENERAL INFORMATION
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Date Created: 2011/05/21 10:46:39 AM
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: 0.750 mm 
(CD) Center Distance: 15.000 mm 
Helix Angle Direction: Left 
(r) Root Fillet: 0.100 mm 

CALCULATION PARAMETERS
Efficiency: 0.92 

Pinion:  
(DM) Mounting Hole Diameter: 6.000 mm 
(b) Face Width: 6.000 mm 
Speed: 10.000 deg/s 
Torque: 9.540 N-m 

Gear:  
(DM) Mounting Hole Diameter: 6.000 mm 
(b) Face Width: 6.000 mm 

PINION MOUNTING CONSTANT

Pinion:  
Pitch of Bearing: 80.000 mm 
Move from Shaft Center: 8.000 mm 
Medium Shaft Diameter: 25.000 mm 

Gear:  
Pitch of Bearing: 80.000 mm 
Move from Shaft Center: 8.000 mm 
Medium Shaft Diameter: 25.000 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

DESIGN INPUT OPTIONS
Type of Gearing: External Gearing 
Output Geometrical Parameters: Find No. of Teeth 
Strength Calculation Method: Based on Simple Bending Stress 
Correction Method: Correct the Tooth Profile 
Load Calculation: Find Power 
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: 15.000 mm 
Tangential Module: 0.750 mm 
(Pc) Circular Pitch: 2.356 mm 
Tangential Circular Pitch: 2.356 mm 
(Pb) Base Circular Pitch: 2.214 mm 
Corrected Root Fillet: 0.225 mm 

Pinion:  
No. of Teeth: 20 
Face Width Ratio: 0.4 
Unit Correction: 0 
Power: 1.70 W 
Speed: 10.000 deg/s 
Torque: 9.540 N-m 

Gear:  
No. of Teeth: 20 
Face Width Ratio: 0.4 
Unit Correction: 0 
Power: 1.50 W 
Speed: 10.000 deg/s 
Torque: 9.54 Nm

STRENGTH VALIDATION

Pinion:  
Allowable Bending Stress: 2307.066 MegaPa 
Safety Factor in Bending: 1.2 
Material Bending Stress: 2768.480 MegaPa 

Gear:  
Allowable Bending Stress: 2307.066 MegaPa 
Safety Factor in Bending: 1.3 
Material Bending Stress: 2999.186 MegaPa 

FORCES
Tangential Force: 1272000.000 mN 
Radial Force: 462970.138 mN 
Normal Force: 1353634.127 mN 
Circumferential Velocity: 0.0013 m/s
Axial Force: 0.000 mN 

BASIC DIMENSIONS

Pinion:  
(db) Base Diameter: 14.095 mm 
(da) Outside Diameter: 16.500 mm 
(d) Pitch Diameter: 15.000 mm 
(dr) Root Diameter: 13.125 mm 
Work Pitch Diameter: 15.000 mm 
(T) Chordal Thickness: 1.040 mm 
(ht) Chordal Thickness Height: 0.561 mm 
(M) Chordal Dimension: 5.535 mm 
(S) Tooth Thickness: 1.383 mm 

Gear:  
(db) Base Diameter: 14.095 mm 
(da) Outside Diameter: 16.500 mm 
(d) Pitch Diameter: 15.000 mm 
(dr) Root Diameter: 13.125 mm 
Work Pitch Diameter: 15.000 mm 
(T) Chordal Thickness: 1.040 mm 
(ht) Chordal Thickness Height: 0.561 mm 
(M) Chordal Dimension: 5.535 mm 
(S) Tooth Thickness: 1.383 mm 


END OF REPORT