Machine Tool Spindle
TABLE OF CONTENTS Chapter1: introduction 1. Introduction 2. Spindles 3. Classification of spindles 4. Parts of spindles 5. Failures in spindles
Introduction
1.1)Introduction A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by machining, which is the selective removal of metal. Machine tools can be operated manually, or under automatic control. Early machines used flywheels to stabilize their motion and had complex systems of gears and levers to control the machine and the piece being worked on. Soon after World War II, the numerical control (NC) machine was developed. NC machines used a series of numbers punched on paper tape or punched cards to control their motion. In the 1960s, computers were added to give even more flexibility to the process. Such machines became known as computerized numerical control (CNC) machines. NC and CNC machines could precisely repeat sequences over and over, and could produce much more complex pieces than even the most skilled tool operators. In machine tools, a spindle is a rotating axis of the machine, which often has a shaft at its heart. The shaft itself is called a spindle, but also, in shop-floor practice, the word often is used metonymically to refer to the entire rotary unit, including not only the shaft itself, but its bearings and anything attached to it. Manual assembly is prone to human errors. It is very important to check and rectify these errors. In order to avoid disasters as a result of this, we need a test rig which serves as a platform for testing and rectifying these errors. A test rig saves a lot of time and money which is very important in the competitive world.
1.2
Introduction
1.1)Introduction A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by machining, which is the selective removal of metal. Machine tools can be operated manually, or under automatic control. Early machines used flywheels to stabilize their motion and had complex systems of gears and levers to control the machine and the piece being worked on. Soon after World War II, the numerical control (NC) machine was developed. NC machines used a series of numbers punched on paper tape or punched cards to control their motion. In the 1960s, computers were added to give even more flexibility to the process. Such machines became known as computerized numerical control (CNC) machines. NC and CNC machines could precisely repeat sequences over and over, and could produce much more complex pieces than even the most skilled tool operators. In machine tools, a spindle is a rotating axis of the machine, which often has a shaft at its heart. The shaft itself is called a spindle, but also, in shop-floor practice, the word often is used metonymically to refer to the entire rotary unit, including not only the shaft itself, but its bearings and anything attached to it. Manual assembly is prone to human errors. It is very important to check and rectify these errors. In order to avoid disasters as a result of this, we need a test rig which serves as a platform for testing and rectifying these errors. A test rig saves a lot of time and money which is very important in the competitive world.
1.2