[ Spur 기어 만들기 ]
1. Parameter 정의
Module :
Number_of_teeth :
Pressure_angle :
Outer_diameter :
Pitch_diameter :
Base_diameter :
Root_diameter :
2. 관계식 정의
Pitch_diameter= Module * Number_of_teeth
Outer_diameter=
(2*Number_of_teeth) * Module
Diametral_pitch
= Number_of_teeth / Pitch_diameter
Base_diameter
= Pitch_diameter * cos(Pressure_angle)
Whole_depth
= (2.2 / Diametral_pitch) + 0.002
Root_diameter
= Outer_diameter - (2 * Whole_depth)
Addendum
= 1 / Diametral_pitch
Dedendum
= Whole_depth - Addendum
Circular_teeth_thickness
= Pi / (2 * Diametral_pitch)
3. In volute 커브 정의
Base_radius = Base_diameter / 2
Angle = t*90
Angle = t*90
Cir_len = (PI * Base_radius * t ) / 2
X_PNT = Base_radius * cos(Angle)
Y_PNT = Base_radius * sin(Angle)
x = X_PNT + ( Cir_len * sin(Angle))
y = Y_PNT - ( Cir_len * cos(Angle))
X_PNT = Base_radius * cos(Angle)
Y_PNT = Base_radius * sin(Angle)
x = X_PNT + ( Cir_len * sin(Angle))
y = Y_PNT - ( Cir_len * cos(Angle))
z = 0
http://www.beyondmech.com/pro-e/cad-topic-6.html
방정식을 사용한 커브 만들기 참고 사이트
http://communities.ptc.com/docs/DOC-2499
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