DESIGN AND FABRICATION OF STEADY REST FOR LATHE

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DESIGN AND FABRICATION OF STEADY REST FOR LATHE

• PROJECT MEMBERS
• S.RAHUMAN
• S.BALAMURUGAN
• K.V.MANOBHARATH
• P.VELMURUGAN

UNDER THE GUIDANCE OF
Mr.A.BALAJI,M.E.
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COMPANY DETAILS

• Neyveli Lignite Corporation is one of the
  major public sector company in India and largest
  in south.
• The Corporation was interested with the
  task of implementing the integrated Lignite
  Project comprising the open cast mines and
  Thermal Station.

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• UNITS OF NLC LIMITED
• MINE-I
• MINE-I A
• MINE-II
• THERMAL POWER STATIONS-I

• THERMAL POWER STATION- EXPANSIO
• THERMAL POWER STATION-II

• The central workshop maintenance yard for
  all concerns of Neyveli Lignite Corporation
  enterprise viz., Mine-I, Thermal power station-I,
  fertilizer unit, and carbonization plant.

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A FEW IMPORTANT JOBS CARRIED OUT ARE

• MANUFACTURING AND RECONTIONING OF DRIVE SHAFTS OF
  B.W.ES AND CONVEYORS
• MACHINING OF LARGE GEAR BOX HOUSINGS.
•  
• RECONDITIONING OF HOLLOW SHAFTS OF BUCKET WHEEL
  EXCAVATORS.
• MANUFACTURING OF 20DIA PLAIN PIPES AND SLOTTED
  PIPES .
•  

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AIM

• To fabricate the maximum diameter(380mm)
  holding steady rest with perfect design for main
  aspects.
• To avoid the delivery time and new part
  purchasing .
• To reduce the downtime of the rework part
  adopted machines

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STATEMENT OF PROBLEM

• 304 nos. of important jobs like drive shafts,
  conveyor idler rollers, cam wheel housing, hollow
  shafts etc are machined in heavy duty lathes like
  vertical turret and Lehmann lathes.
• They are unable to complete all the jobs on
  time. Due this job deliver time increased .
• Delay in allocation of these jobs due to non
  availability of machines.
• Non availability of suitable steady
  rest in medium duty lathes for loading jobs.

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REASON FOR CHOOSE THIS TITLE

• Company steady rest available for medium
  duty Bombay lathe is maximum 180mm diameter job
  holding capacity.
• Mines department purchased new part when
  the rework delayed .
• so we are decide to make the new steady
  rest for Bombay lathe to increase the job holding
  capacity(180mm to 380mm) and reduce the job
  setting time.

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Methodology

• Basically steady rest is one of the jig
  and fixture of lathe .
• It reduces the vibration and
  eccentricity of job at the time of various
  operations in lathe. And also one of the support
  of the job.
• The steady size is depends upon the
  lathe bed width. its size is not exceed to lathe
  bed width.
• The steady rest used to holding the job
  and it is not affected the job rotation and
  surface of the job.

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• DRAWINGS

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• 3D VIEW OF STEADY REST
  

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TIME LINE
December 08 January 09 February 09
Problem Identification, Analysis , Design Material collection, machining operations Assembly and Result analysis
Completed Completed -
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Thankyou..