MECHANICAL FINAL YEAR Multipurpose machine PRESENTTED BY ASHISH KUMAR BARANWAL JYOTI PAL VIVEK SINGH CHAUHAN ADIL KHAN SOHRAB MECHANICAL FINAL YEAR

CONTENTS- INTRODUCTION OBJECTIVE PLANNING AND PROJECT IDEA MATERIAL LIST COSTING OF PROJECT DESIGN OF MACHINE CALCULATION AND ANALYSIS POWER TRANSMISSION THROUGH GEARS PARTS OF MACHINE ADVANTAGES LIMITATIONS APPLICATIONS FUTURE IMPLEMENTATION CONCLUSION

INTRODUCTION- It is the compact unit capable of doing many machining operations that normally require expensive single purpose machine. With the different attachments that are available with the unit drilling, cutting and grinding can be performed quickly and inexpensively. A single motor worked as a prime mover in all operations, for controlling all the motor mechanism a switch box is also provided with the machine.

OBJECTIVES- In the industries small job preparation can be done without using heavy machines. It performs multiple operations simultaneously, giving the workers more opportunity to perform their work quickly and efficiently. The main purpose of developing and designing, multipurpose machine is to make aware the students about the basic operations at very minimum cost in the institute, they can learn the basic mechanism behind the operations.

PLANNING AND PROJECT IDEA After deciding this topic titled “Multi Purpose Machine”, Ashish had given to each member to work on a particular portion of project like the designing will be done by Jyoti, Report and synopsis will be accomplished by Sohrab, parts manufacturing will be done by Vivek, Material procurement will be done by Adil and the assembly will be done by our whole team.   Ashish said to all that he will help to each member of our group at each and every step of portion to complete their work, like he had helped to Jyoti ,Sohrab, Vivek and Adil to perform the designing, report completion, parts manufacturing and material procurement.

MATERIAL LIST S.NO. Part Material Quantity 1 Set of bevel gears Hardened steel 3 2 Shaft Hardened steel 2 3 Pulley Cast Iron 2 4 Ball Bearing Cast alloy steel 4 5 Grinder Abrasive (composite) 1 6 Cutter High speed steel 1 7 Bar for base Cast Iron 23 8 Drill bit High speed steel 1 9 Work table Wood 1 10 Motor --------------------- 1

COSTING OF PROJECT 1 Motor 1 5000 5000 2 Bearing 4 150 600 Sr. No. Particulars. Total quantity Cost Rs./Unit TotalCost 1 Motor 1 5000 5000 2 Bearing 4 150 600 3 Bevel gear 3 100 300 4 Pulley 2 200 400 5 Drill arrangement 1 3000 3000 6 Drill belt 1 50 50 7 Drill chuck 1 300 300 8 Nut & Bolt 6 10 60 9 Grinding wheel 1 250 250 10 Cutter 1 100 100 Washer 8 3 24 12 Operational cost - 200 200

Sr. No. Particulars. Total quantity Cost Rs Sr. No. Particulars. Total quantity Cost Rs./Unit TotalCost 13 Transportation cost - 500 500 14 Shaft 2 150 300 15 Work table 1 50 50 16 Cable 1 20 20 17 Welding - 200 200 18 Paint 1 30 30 Total 11384

DESIGN OF MACHINE-

ACTUAL MULTI PURPOSE MACHINE

CALCULATIONS & ANALYSIS Motor Power= 746 watt = 1 hp RPM= 1400 Power (P)= 2πNT/60 (746*60)/(2 π1400) = T Torque (T)= 5.0884 N-m FOR CUTTING AND GRINDING Speed of motor (Nm)=1400 rpm= Speed of big gear (Nb) Teeth of big gear (Tb)= 18 Teeth of small gear (Ts)=10 We know that Nb/Ns = Tb/Ts and the gear ratio =1.8 (Speed of small gear) Ns= 2520 rpm

Grinding and cutting velocity For grinding Velocity of grinding (Vg) = (πDn)/(60*1000) mm/sec Where D= Diameter of grinding wheel Vg= (π*150*2520)/(60*1000) Vg = 19.79 mm/sec =0.01979 m/sec For cutting Velocity of cutting (Vc) = (πdn)/(60*1000) mm/sec Where d= Diameter of cutter Vc= (π*95*2520)/(60*1000) Vc= 12.53 mm/sec= 0.0125 m/sec

For drilling Speed on Pulley1 mounted on motor (Np1)= 1400 rpm Speed on Pulley2 mounted on drill (Np2)= ? Dia of pulley mounted on drill (Dp2) = 7.3cm Dia of pulley mounted on motor (Dp1)= 9.4cm We know that Np1/Np2 = Dp2/Dp1 Np2= 1802 rpm Hence the drilling speed (Np2) = 1802 rpm.

POWER TRANSMISSION THROUGH GEARS Bevel gears are gears where the axes of the two shafts intersect and the tooth bearing faces of the gears themselves are conically shaped. Bevel gears are most often mounted on the shafts that are 90 degrees apart, but can be designed to work at other angles as well. By increasing or decreasing the ratio of teeth between the drive and driven wheels the rotational drive and torque of second wheel can be changed in relation to the first.

PARTS OF MACHINE- The main parts of the multipurpose machine are:- MOTOR:- It is the main prime mover of the machine which provide motion to all equipment used in this machine. In this machine we are using the motor with following specifications:- 1.0 HP 1400 RPM 220/230 V 50 Hz 5.5 A

GRINDING WHEEL:- A grinding wheel is a wheel composed of an abrasive compound and used for various grinding and abrasive machining operations. The wheels are generally made from a composite material consisting of coarse-particle pressed and bonded together by a cementing matrix to form a solid, circular shape.

CIRCULAR SAW:- A circular saw is a power-saw using a toothed or abrasive disc or blade to cut different materials using a rotary motion spinning around an arbor. A circular saw is a tool for cutting many materials such as wood, plastic or metal and may be hand- held or mounted to a machine.

DRILL BIT:- Drill bits are cutting tools used to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shape and can create different kinds of hole in many different materials.

BALL BEARING “Ball bearings” use balls that roll on conformal raceways on the inner and outer rings’ (races) outer and inner surfaces respectively. By having the raceway closely conform to the ball, rather than rolling on a pure cylinder, orders of magnitude greater load capacity are obtained. A number of balls or rollers are used and these are held at proper distances by retainers so that they do not touch each other.

ADVANTAGES- It can be used for more than one operation. It is highly efficient machine. It is most reliable machine. It required less maintenance. Low power consumption. It is cheaper than other machine. Less man power is required. Less time consuming. Size is compact therefore it required less space.

LIMITATIONS- It can be used for small work only. It is a manual machine. All the machining operations are operated by a single motor so if it will not function properly, all operations get affected.

APPLICATIONS- In The Garage In Small Industries

In Institutes Workshop For Domestic Purposes

FUTURE IMPLEMENTATION We can perform various operations like cutting, drilling and grinding individually by introducing coupling (engagement and disengagement) between them. We can perform shaping operation by introducing a shaping tool at the counter shaft. We can perform boring operation by introducing a boring tool by replacing drilling. We can change the speed of motor by regulator. It can be used as a standby unit in industrial field.

CONCLUSION- All the production based industries wanted low production cost and high work rate which is possible through the utilization of multipurpose machine which will less power as well as less time consuming. In an industry a considerable portion of investment is being made for machinery installation. So by the help of this machine we can perform operations like drilling, grinding and cutting at different working centers simultaneously. The industrialist have not to pay for machine performing above operations individually which reduces the overall cost of the product produced.

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