Designing of a manually & automatic operated screw

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DESIGNING OF A MANUALLY & AUTOMATIC OPERATED SCREW JACK In this current presentation we are going to discuss the design a screw jack which can be operated manually and automatic as well. Our main goal to achieve is, to design a light weight screw jack which can uplift a Weight upto 3 tonnes. Why we considered it to be lightweight &automatic? The jack could be operated easily without AGE & GENDER consideration. Why the need of adding manual option? The difficulty in providing a power source at each circumstances let us to add the manual option Innovation: Automatic(era) & Internal and External threaded Screw

Transcript of Designing of a manually & automatic operated screw

Designing Of a Manually & Automatic Operated Screw Jack

Designing Of a Manually & Automatic Operated Screw JackIn this current presentation we are going to discuss the design a screw jack which can be operated manually and automatic as well.Our main goal to achieve is, to design a light weight screw jack which can uplift a Weight upto 3 tonnes.Why we considered it to be lightweight &automatic?The jack could be operated easily without AGE & GENDER consideration.Why the need of adding manual option?The difficulty in providing a power source at each circumstances let us to add the manual optionInnovation: Automatic(era) & Internal and External threaded Screw

SCREW JACKA screw jack is a portable device consisting of a screw mechanism used to raise or lower the load.

Principle: The screw jack works is similar to that of an inclined plane.

Dc working principle: d.c motor is coupled with the screw jack by gear arrangement. The screw jack shafts rotation depends upon the rotation of D.C motor.The D.Cmotor shaft is connected to the spur gear. If power is given to the D.C motor, it will run so that the spur gear also runs to slow down the speed of the D.C motor.

Types of jacks- A hydraulic jack consists of a cylinder and piston mechanism. The movement of the piston rod is used to raise or lower the load. Mechanical jacks can be either hand operated or power driven.

Material propertiesS. NO.PARTSMATERIALSPECIFICATION1)ScrewPlain carbon steel 30C8Syt =400MPa Sut =550MPad=36mm dc=30mm p=6mm2)BearingChrome stainless steelSyt =300MPa Sut =445MPaISO104-1133523)GearAISI 4340 normalised steelt=12 module=2.5 T=504)Lower FrameHard cast steel 5)Upper FrameSyt =485MPa Sut =275MPaASTM A27 grade 70

SCREW

DESIGNING OF NUT

Specification of BEARING

SPECIFICATION OF GEARBall Bearing(axial-loading)Chrome stainless steelSyt =300MPa Sut =445MPaTotal height=12.5mmInternal dia=36mmExternal di=50mm

Spur gear-Trapezoidal profileTotal no. of teeth=46Addendum dia=115mmClearance=1mmDedundum dia=105mm

Handle

Analysis of bearing

Power calculation for automatic

PARTS OF THE LIFTING JACK IN EXPLODED VIEW

MOTION ANALYSIS OF THE LIFTING JACK

MAGNITUDE OF STRESSES INDUCED

DISPLACEMENT OF DIFFERENT PARTS

EQUIVALENT STRAIN

UNDER THE GUIDANCE OFDr KALYAN KUMAR SINGH

GROUP MEMBERSAbhishek Kumar15JE001459Akshay Mandwale15JE000968Sachin Kumar15JE001463K Bharat Kumar 15JE001160Raghvendra Singh15JE001431