Cylindrical grinding
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The document provides an overview of cylindrical grinding, covering its principles, operations, and types of machines. It describes two main operations: traverse grinding and plunge grinding, along with the specific types of cylindrical grinding machines, namely plain centre type and centre type universal grinders. Both machine types have distinct features and applications in producing external cylindrical surfaces.
Cylindrical grinding
- 1. CYLINDRICAL GRINDING By N . RAM KUMAR 2nd YEAR MECHANICAL 1
- 2. CONTEXT • Introduction to cylindrical grinding • Types of operations 1.Traverse grinding 2.Plunge grinding • Types of cylindrical grinding machine 1.Plain centre type cylindrical grinding machine 2.Centre type universal grinder 2
- 3. CYLINDRICAL GRINDING • The principle of cylindrical grinder is that the work piece is held between the centers. It is rotated by a dog and a face plate and the rotating grinding wheel is feed against it. External grinding machine 3
- 4. CYLINDRICAL GRINDING MACHINE LAYOUT 4
- 6. TYPES OF OPERATIONS Two types of operations are carried out 1.Traverse grinding 2.Plunge grinding Work piece type Cylindrical surfaces may be straight, curved. 6
- 7. TRAVERSE GRINDING This method is used when the job length is more than work piece is lesser than the width the grinding wheel. The wheel is made to rotate in a fixed position. The rotating work made to traverse. The grinding is done by giving longitudinal feed to the grinding wheel. 7
- 8. PLUNGE GRINDING This method is used when the length of the work piece is lesser than the width of the grinding wheel. The grinding is done by giving only cross feed to the grinding wheel. This is known as plunge grinding. 8
- 9. TYPES OF CYLINDRICAL GRINDING MACHINE This machine is used to produce external cylindrical surface. The surfaces may be straight, tapered, steps or profiled. Broadly there are two different types of cylindrical grinding machine as follows: 1.Plain centre type cylindrical grinder 2.Centre type universal grinder 9
- 10. PLAIN CENTRE TYPE CYLINDRICAL GRINDER The machine is similar to a centre lathe in many respects. The workpiece is held between head stock and tailstock centres. A disc type grinding wheel performs the grinding action with its peripheral surface. Both traverse and plunge grinding can be carried out in this machine. The grinding machine consists of various parts 1.Base 2.Table 3.Head stock 4.Tail stock 5.Wheel head 10
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- 12. CENTRE TYPE UNIVERSAL GRINDER Centre type universal grinders are widely used in tool room for grinding tools. 12
- 13. The features of this machine are similar to those of plain grinders but it addition, it is provided with the following features. 1.The centre of the head stock spindle can be used as alive or dead. The work can be held and revolved by a chuck. 2.The wheel head can be swiveled in a horizontal plane in any angle and it can be fed in the inclined direction also. 3.The headstock can be swiveled to any angle in the horizontal plane. 4.The wheel head can also be arranged for internal grinding. 13
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