What is locator? Explain locating principle with necessary figures.
Compare between jigs and fixtures.
Why referencing is important for work holding devices?
How much cutting force is required for machining mild steel at cutting speed 120 m/min with depth of cut 3 mm and feed 0.2 mm/rev. It is noted that machine co-efficiency 80%.
What is work holder? What are the functions of work holder? Briefly explain the selection criteria of work holder.
Explain the 3 – 2 – 1 principle of location.
What are the basic differences between jig and fixture? Draw a schematic diagram of a leaf jig and write its advantages and disadvantages.
Define Jig and Fixture. State the advantages of using Jigs and Fixtures during machining. What are the types of fixtures?
Describe the Locating Guidelines and Locating Principle.
What is work holding device? Distinguish and logically explain the differences between Locator and Clamps.
Define range ratio (RnR_nRn). Show that z=logRn(ϕ)logϕz = \frac{\log R_n(\phi)}{\log \phi}z=logϕlogRn(ϕ)
Explain 3-2-1 locating principles with necessary figures.
Explain the following press-work operations: (i) Blanking (ii) Piercing (iii) Notching (iv) Lancing.
What is locator? Explain 3-2-1 locating principle with necessary figures.
Make a comparison between Jigs and Fixtures.
Why Referencing is important for work holding devices?
What is the cutting power required for machining mild steel at cutting speed 120 m/min with depth of cut 3 mm and feed 0.2 mm/rev (machine co-efficient 80%).