MURANG’A UNIVERSITY OF TECHNOLOGY SCHOOL OF ENGINEERING AND TECHNOLOGY DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING MECHANICAL WORKSHOP LAB REPORT Ernest Mwangi Njoroge – EN201/1586/2019 Elias Kipkorir. -EN201/0251/2019 ALEX CHEBOI -EN201/1562/2019 Wanjihia simon karobia -EN201/1579/2019 Robert Maingi -EN201/1603/2019 Job Mwene - EN201/0256/2019 Livingstone Orango -EN201/0252/2019 Dismas Mokua -EN201/0253/2019 Kimoi Brian Batasi -EN201/0254/2019 Chiuri N Wachira -EN201/1541/2019 Kplangat Bor Benard -EN201/1606/2019 Mercy Mutheu Muema -EN201/0209/2018 Tim Nderitu -EN201/0200/2018 Mark M Mungai -EN201/0198/2018 Maurice Okinyi Ochieng -EN201/1581/2019 Abstract Mechanical workshop is introduced, its importance and what it comprises of is stated in this report. Introduction These types of hands-on training programs give you exposure to latest technologies and help you to acquire skills by building projects hands-on. Attending such mechanical workshops will also help you to identify your area of interest and then you can develop more skills on them to master it. Here we are introduced to various tools, machines and equipment, their functionality, how to use them and safety precautions to be taken in the mechanical workshop especially in handling of the machines that may be dangerous when carelessly held. Safety precautions in the mechanical workshop; 1. Always wear safety gear while working in the workshop. Hand gloves, safety shoes, helmets and eyeglasses are mandatory for workshops. 2. Malfunctioning machines can occur any time. It could happen during the process of screw tightening or replacing the motor of the machine. Irrespective of the type of break down, never try to work on it while the machine is on and running. 3. Non-slip mats should be used in front of machines where necessary, and machines should be sensibly placed to avoid overcrowding and suitably anchored to vibration. 4. Maintain all the service records of machines and equipment. It will not only save time but also help you to take care of repetitive break downs. 5. All the tools and accessories must be kept back at their relevant places. Placing them anywhere will lead to chaos and inefficient working. 6. Smoking and drinking should be prohibited in the workshop. 7. The gangway through the workshop must be kept clear. Any grease or oil spillage must be cleaned on a regular basis. Orientation Tour around the mechanical workshop being showed various machines their functionality and safety precautions are stated. No 1. Machine Off-hand grinding machine. Functionality Removes material with geometrically nondefined, bonded cutting edges, where the relative movement between tool and work piece is rotational or linear. Safety Precaution Check that grinders do not vibrate or operate roughly. Hold grinders as follows as guided by its manual. Use racks or hooks to store portable grinders. Stand away from the wheel when starting grinders. 2. Guillotine machine. Has blades that shears the material, starting at one side of the sheet. 3. Bending machine. Assemble a bend on a work piece. 4. Hydraulic press machine. 5. Power hack saw. Generates power for compressing metals using hydraulics. Used to cut large sizes (sections) of metals such as steel. 6. Lathe machine. 7. Milling machine Remove metal from a piece of work to give it a desired shape and size. This machines used to making gears. Usually used to a machined flat Inspect all wheels for cracks and defects before mounting. Check workspaces and walkways to ensure no slip/trip hazards are present. Ensure working parts are well lubricated and free of rust and dirt. Ensure the area around the machine is adequately lit. Be aware of other people in the area. Always wear protective safety equipment such as safety gloves, safety goggles and work boots. These will protect your hands, eyes and feet from any scrap metal or sharp equipment. Keep your work surface clean and clear of metal scrap to avoid injury. Mount the equipment properly. Check and maintain your equipment regularly. Do not use faulty equipment. Report suspect machinery immediately. Do not cut very small items. Do not cut material other than metal. Never leave the machine running unattended. Lathes contain several fastrotating parts that can cause contact and entanglement hazards. Keep all body parts away from all rotating parts. Never wear loose-fitting clothing or jewellery while operating a lathe. Tie back and contain all long hair. Use guards to protect from accidental contact with rotating parts. Make sure that the machine is fully stopped before taking any measurements. surface but can also produce irregular surfaces. Used to produce the groove or slot. 8. Shaping machine Used to produce Horizontal, Vertical or Inclined flat surfaces by means of straight-line reciprocating singlepoint cutting tools similar to those which is used in lathe operation. Operation V-fitting was performed using various tools. V-fitting schematic drawing Always use cutters which are sharp and in good condition. Don't place anything on the milling machine table such as wrenches, hammers, or tools. Always stay at the machine while it is running. Keep clear of moving machine parts. Never leave the machine running unattended. Do not leave equipment on top of the machine. Follow correct clamping procedures – keep overhangs as small as possible and check work piece is secure. Ensure you have selected correct speed and rate. No OPERATION 1 Marking out and cutting of work piece. Length 60mm-,width 45mm 2 Filing edges to square. 3 Right angle between adjacent sides is checked 4 Chalk is then applied on the surface of the two pieces 5 Marking the dimensions of the v fitting 6 Punching dots along the scribed lined 7 Removing unwanted portions 8 Cut edges are filed 9 Corners of the stepped surfaces are filed to get sharp corners 10 The piece are fitted together and the mating is checked for the correctness of the fit TOOL/EQUIPMENT Steel rule, scriber, tri square, power hacksaw Bench vice, flat file, try square, Try square Steel rule, scriber and try square Vernier height calipers Dot punch, hammer Hack saw, bench vice Half round file, bench vice Square or triangle file, bench vice Bench vice Conclusion This report has presented a general information about mechanical workshop. I have shown the safety rules for the clothing and behaviour. Then, I have introduced some of the workshop tools and machines used to perform various operations. It is important to build up knowledge and experience about the workshop since it is the place where engineers and technicians produce the parts and pieces the need for different purposes. References Deakin University (2017). Workshop rules and Safety Considerations. Machine Shop (2017). Yash. S (2013). Types of Workshop Machinery.
