Lathe Main Motion Drive - Drawings

Contents

Table of contents

INTRODUCTION

KINEMATIC CALCULATION

STANDARD SPINDLE SPEEDS (RPM)

DETERMINATION OF TRANSMISSION RATIOS

STRUCTURAL GRID CONSTRUCTION

CREATING A PATTERN OF ROTATIONAL SPEEDS

CALCULATION OF MAXIMUM TORQUES ON INTERMEDIATE SHAFTS

CALCULATION OF SHAFT DIAMETERS

CALCULATION OF GEAR MODULES

CALCULATION OF NUMBER OF GEAR TEETH

CALCULATION OF AXIAL DISTANCE AND DIAMETERS OF GEARS

GEARING STRENGTH CHECK I9-

GEARING STRENGTH CHECK I11-

CALCULATION OF V-BELT TRANSMISSION

SPINDLE CALCULATION FOR STIFFNESS

DETERMINATION OF FORCES IN ENGAGEMENT AND CONSTRUCTION OF BENDING AND TORQUES FOR THIRD SHAFT

BEARING DURABILITY CHECK

DETERMINATION OF FORCES IN ENGAGEMENT AND CONSTRUCTION OF BENDING AND TORQUES FOR SPINDLE

BEARING DURABILITY CHECK

KEY JOINT STRENGTH CHECK

REFINED SHAFT CALCULATION

LUBRICATION SYSTEM

LIST OF LITERATURE

Introduction

By drive is meant a combination of a source of motion and mechanisms transmitting motion to the final links of the machine. The following types of drives are used as actuators of the main movement in the MRS.

Gear gearbox with single or multi-speed AC motor.

Gear gearbox with DC motor.

Replaceable gears with single or multi-speed AC motor.

Stepped pulley drive with single or multi-speed electric motor.

Multi-speed AC motor.

Adjustable electric motors and DC electric drives.

Stepless transmission (variator) with single or multi-speed AC motor. Sometimes two variators are used simultaneously.

Gear gear box combined with variator and non-adjustable AC motor.

Hydraulic drive.

Drives 2, 6, 7, 8, 9 are used for stepless (smooth) control of the speed of the end links of the machine, the rest for stepped (discrete) control.