CHAPTER 15 APPENDIXES

Conversion

Ball screw

Ｊ1＝

2

１

ＢＰ

Ｗ

×

２π

１０3

×　ＧＬ2

W: Total mass of moving parts [kg]

BP: Thread lead [mm]

GL: Reduction ratio (no unit)

Rack & Pinion, conveyor and chain drive

Ｊ2＝

Ｗ

４

2

Ｄ

１０3 ×　ＧＬ2

W: Total mass of moving parts [kg]

D: Diameter of pinion [mm]

Diameter of sprocket [mm]

GL: Reduction ratio (no unit)

Feed roll

Ｊ3＝

Ｗ

４

2

Ｄ

×　ＧＬ2

１０3

W: Total mass of moving parts [kg]

D: Roll diameter [mm]

GL: Reduction ratio (no unit)

Rotating body and table drive

Obtain the sum of inertia of each shape.

Inertia of body located at a distance from the axis of rotation （Ｊ４）

Ｊ4＝

Ｊ ＋　Ｗ

2

Ｌ

１０3

×　ＧＬ2

J: Inertia around the center of gravity of body

W: Mass of body [kg]

L: Distance between body and axis of rotation [mm]

GL: Reduction ratio (no unit)

15

Capacity Selection Calculation 15-19