Question

Instructions for Lab Report-6: Machining Project (30 marks) (Deadline is in the class after two weeks) Write the objectives of the lab (1 mark) Introduction 2.1 Define machining and briefly explain two main differences between bed type and column and knee type milling machine. (2 marks) 2.2 Explain the part you made in your Machining Project and what is it used for? (2 marks) 2.3 Explain the product life cycle (in your own words) (2 marks) Write conclusions from your experience of Machining Project Lab in your own words (1 marks) Explain procedure to machine the ASSISGNMENT PART SHOWN BELOW (4 marks) Prepare an OPERATION SHEET for the ASSISGNMENT PART SHOWN BELOW (To get full grade, you need to prepare a complete operation sheet with all operations, machines, tools and machining variables for each operations. You can get the machining variable such as cutting speed, feed etc. from the operation sheet generated in the lab) (10 marks) Attach the operation sheets you prepared in the lab 1. 2. 3. 4. 5. 6. ASSISGNMENT PART Conical Through Hole. with φ25mmp 20mm Note: Initial dimension of the material is 160x120x12 mm

Answer 1

Obiective of the Lab: The objective of the lab is to prepare a machined part in the machining workshop as shown in the figure (1). ASSISGNMENT PART Conical Through H with 325mmp ole Note: Initial dimension of the material is 160x120x12 mm Figure (1) 2 2.1 Machining: The process in which the raw material is cut into parts and provided with surface finishes, which ultimately leads to the formation of finishes, which ultiatsatt parts

a part. In this process, the excessive material from the metal is removed via controlled mechanical machining in order to form a desired product The two differences between bed type and column and knee type milling machine are enlisted in the table below Bed Type Milling Machine Column and Knee Type Milling Machine The job is placed on the specially designed work table of the milling machine The machining is performed irn The job is placed on the bed of the machine The machining is not performed in longitudinal direction, due to absence of longitudinal direction, due to presence of knee in Bed Tye Milling Machine. knee in Column and Knee Type Milling Machine Table (1) 2.2 The part made in the machining workshop is a clamp. This part can be bolted on the grounds and support bars and rods that are supposed to provide support in vertical position. 2.3

The life cycle of the product is defined as the time period for which the part formed can be used without the need of replacement or fracture or repair 3. Conclusion: The conclusion made from the machining project lab is that the parts tha are designed and used must be machined very properly with great attention. The care taken in procedure of machining will yield higher accuracy of the drawing and the actual part formed.