Design and Fabrication Multi Spindle Drilling Machine with Different Pitch Hole

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International Journal of Advance Research and Innovation

In today’s world, the growth of Indian manufacturing sector is highly dependent on how productivity and quality. Productivity can be increased by improving the efficiency of the operations carried out in the organization. This can be done by reducing the machining time, combining the operations etc. Thus special purpose machines needs to be used and one such machine is multi spindle drilling machine which performs multiple drilling operations more accurately and conveniently. This paper presents the design and development of a multi spindle drilling machine which would have a higher productivity as compared to conventional drilling machines. The proper sequence wise design analysis of the components of multi spindle machine is discussed.

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This paper converse about the study of design of multi spindle drilling machine. In the case of mass production where variety of jobs is less and quantity to be produced is large, it is very essential to manufacture the job at a faster rate. This is not possible if we produce by using general purpose machines. The purpose is to minimize the production time for drilling multiple holes in a work piece of different Pitch Circle Diameters (PCD). In this work we have to drill 4 holes of different diameter at a time. This paper deals with design and development of multi spindle drilling head to maximize the improvement of cycle time of component

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Now-a-days industries uses different milling machines to drill holes at various locations and orientation. Use of such milling machine increase initial cost incur in purchasing machine. Some industries uses angle vice to drill the hole at any orientation. But with the use of such angle vice time required to orient the job increases. It also required more human effort to orient the job in case of large workpiece like IC Engine block. With the use of multiangle drilling machine we don't need to move the workpiece in any direction. We can only need to rotate the knob of machine to obtain required angle. So it reduces cost incur in milling machine and also human effort.

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In this paper, controller based 3 axis drilling machines is implemented using Controller, controlling the whole operation. The main purpose of this project is to reduce the time consumed, hard work required and also to reduce the man power. This can be the new invention in the electronics industries which can increase the production rate with greater percent. We can also call it as automation because once you set all the parameters required, the machine will start working without any human interfere. Inspiring from this technology and revolutionary change in the world of digital electronics & Microcontrollers, we are presenting here an idea of "dpdt controller based 3 axis drilling machines". In old technology the main disadvantage of altering the position of the workpiece is that it reduces the accuracy of the finished components. So here in this project we have planned to use multi spindle drilling head instead of using single spindle. If we use multiple spindles than we can decrease the time required to complete the operation. This helps in reducing the cost price of drilling operation. So this system is one of the efficient process with increase in the accuracy of the operation.

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The growth of Indian manufacturing sector depends largely on its productivity & quality. Productivity depends upon many factors, one of the major factors being manufacturing efficiency with which the operation /activities are carried out in the organization. Productivity can be improved by reducing the total machining time, combining the operations etc. In case of mass production where variety of jobs is less and quantity to be produced is huge, it is very essential to produce the job at a faster rate. This is not possible if we carry out the production by using general purpose machines. The best way to improve the production rate (productivity) alongwith quality is by use of special purpose machine. Usefulness and performance of the existing radial drilling machine will be increased by designing and development of multispindle drilling head attachment. This paper deals with such development undertaken for similar job under consideration alongwith industrial case study.

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International Journal for Research in Applied Science and Engineering Technology -IJRASET

There are number of machine tools producing round and taper holes. But many engineering components require square and non-circular holes. At present square and other non-holes are produced using CNC machines or spark erosion or slotting machines. But there is no quality machine tool to produce square and polygon holes at minimum cost. Thus we made an attempt to design and fabricate an attachment for drilling machine which would produce square and polygon holes much more easily than the current method. This will be very useful to seat bolt heads etc. This attachment can be thought of an inversion of the "Cam and crank shaft mechanism. This attachment can be fitted either in drilling machine or vertical milling machine. A complete design for this attachment for a size of ma*imum 20mm square and polygon holes has been successfully done and tested using an upright drilling machine. For different sizes of holes less than 20mm the tool can be changed. Similar designs can be made for any size and any number of sides to avoid lot of setting time and pre-machining procedures involved in current methods and very useful in case of mass production.

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The mechanical design and of a square hole producing tool based on Reuleaux Triangle. The main aim of our papaer is to investigate how the circular motion can be converted into a square motion by purely a mechanical linkages; an application of which is to construct a special tool that drills exact square holes. The geometrical construction that fulfils the laid objective is Reuleaux Triangle. Additionally, for this geometry to work like a rotating drive (such as a drill press) must force the Reuleaux triangle to rotate inside a square, and that requires a square guide to constrain the Reuleaux triangle as well as a special coupling to describe the fact that the center of rotation also in moves within in the constrain. The practical importance of this enhancement is that the driving end can be placed in a standard drill press; the other end is restricted to stay inside the fixed square, will yield a perfectly square locus and this can be turned into a working square-to drill hole.

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Nowadays, the drilling machine is a rapid growth product with more uses and applications. Drilling machines are used to make the holes on the given workpiece. The Basic Drilling Machine efforts more constraints by limiting their movements and direction. There is a severe problem between drill and job which provides less space to make the holes. In this project, we are working on a 360-degree drilling machine to eradicate the problems by moving the drill in different locations. The precision and accuracy are higher in this Machine because the setup provides the proper straightness to the drill bit. This makes efficient holes on the workpiece rather than deformation in the drill bits. The 360 degree drill setup consists of different connecting arms which assists the movement of the drilling machine in horizontal, vertical and upside down direction which is mounted on a flat surface like a table provided with the swivel wheels. The caster locks are introduced to limit the movement of the drilling machine. The cost of manufacturing and setup is comparatively lower than other drilling machines. The feasibility of the project is expected to be good. The handling is easily done by the operator. This 360 degree drilling machine can be implemented to all the industries using drilling operations because of the selective axis and angle of drilling with the higher accuracy.

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