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PROCESS PLANNING OF BEARING HOUSING
K.HARITHA (10951A2171)
RANI TAKKALA (10951A2187)
D.SRILEKHA (10951A21A5)
B.UDAYINI (10951A21B4)
INTRODUCTION
PROCESS PLANNING Process planning encompasses
the activities and functions to prepare a detailed set of plans and instructions to produce a part. The planning begins with engineering drawings, specifications, parts or material lists and a forecast of demand.
Process Planning Steps
Study the overall shape of the part. identify the manufacturing features and
notes. Select raw material and machines. Select tools. Evaluate the plan. documentation.
TYPES OF MANUFACTURING PROCESS
Jobbing production Batch production Mass or flow production Process Production
BEARING HOUSING
Bearing cover
BEARING HOUSING SPECIFICATIONS
Housing Styles Housing Material
Aluminium alloy 6063 (magnesium + silicon)
Bore Diameter Size Range
Types of Bearing Housings
Pillow Block Bearing Housing Flange Housings Take-up Housings Cartridge bearing housing
Pillow Block Bearing Housing used to provide support for a rotating
shaft with the help of compatible bearings & various accessories. Housing material for a pillow block is typically made of cast iron or cast steel.
Flange Housings flanged housing units offer a multitude
of advantages for the design, manufacture, mounting and maintenance of large electric machines
Take-up Housingsused in locations where between-shaft
distance must be adjusted.
Cartridge bearing housingused for the free side bearing to allow for
expansion or contraction of the shaft produced by temperature differences.
Fits and Tolerances
The term Fit usually refers to the clearances that are permissible between mating parts in a mechanical device that must assemble easily and that must often move relative to each other during normal operation of the device. Such fits are usually called running or sliding fits.
The term Tolerances refer to the permissible deviation of a dimension from the specified basic size.
Types of Fits
Generally there are three types of fits between the mating parts. They are:
Clearance Fits, Interference Fits, and Transition Fits.
CAD
CAD (computer-aided design) software is used by architects, engineers, drafters, artists, and others to create precision drawings or technical illustrations.
complete and clear graphics, material types and part name, appropriate set of views showing all
required dimensions tolerances clear titles and labels.
MACHINING
RAW MATERIAL CUTTING used to obtain the particular product in
terms of weight and dimension. lathe machine used for turning, boring, facing, and
thread cutting.
CNC MACHINING
CNC Computer Numerical Control machines are widely used in manufacturing industry.
CNC Programming Basics Types of CNC Machines Used CNC Milling CNCTurning
Grinding Machines
Used to obtain high accuracy along with very high class of surface finish on the work piece.
Conventional grinding machines can be broadly classified as:
(a) Surface grinding machine (b) Cylindrical grinding machine (c) Internal grinding machine (d) Tool and cutter grinding machine
INSPECTION
Micrometer Vernier Calipers Gauge Blocks Height Master Bore Gauge
QUALITY CONTROL
Quality control emphasizes testing of products to uncover defects and reporting to management who make the decision to allow or deny product release.
INSTALLATION
INSTALLATION CHECKS PRE INSTALLATION CHECKS lubricants and tools checks GENERAL CHECKS
Failure
Tensile stresses HEAT CAUSES MATERIAL FAILURE
Advantages
The lubricant to pass through the housing directly to the center of bearings
Leakage of oil outside housing is prevented due to the triple seal
Economic replaceable units, require low maintenance
Suitable for heavy load application with temperature