Manufacturing Industries Interview Questions & Answers

Question 1. What Is A Tool ?

Answer :

Anything which is necessary to make a product is called tools.

Question 2. What Are The Classification Of Tools ?

Answer :

Press tools, Moulds, Jigs and fixtures, Cutting and assembly tools ,gauges and measuring instruments.

Question 3. What Is A Press Tool ?

Answer :

Press tool is a custom built tool in which we make sheet components that not readily available in the market.

Question 4. What Do You Mean By Stampings?

Answer :

The sheet metal which makes with the help of press tool is called stampings.

Question 5. Name The Different Types Of Rolling ?

Answer :

Hot rolling, cold rolling.

Question 6. What Is Stock Materials ?

Answer :

Sheet metal from which stampings made is called stock material.

Question 7. What Do You Mean Blanking ?

Answer :

In this operation, cut out material or slug will be the component.

Question 8. What Is Piercing?

Answer :

Process of making opening on sheet metal is called piercing. The cut out material will be waste.

Question 9. Describe About A Side Cam Tool?

Answer :

Transforms vertical motion of the press ram into horizontal motion of the tool. It is used for side piercing.

Question 10. What Is Dinking ?

Answer :

Press tool cutting operation for soft materials like paper, leather, wood etc.

Question 11. Describe Bending?

Answer :

Bending can be explained as shaping of material around straight line axis. Result is a new plane which is at an angle to the mother plane.

Question 12. What Is Forming ?

Answer :

Press tool non cutting operations in which material is formed into different shapes.

Question 13. What Is Compound Tool ?

Answer :

All cutting features of the component perform at one stroke of the ram.

Question 14. Formula Of Cutting Force ?

Answer :

Fc = LSTmax

L : Length of periphery to cut in mm.

S : sheet thickness in mm

TM ax : shear strength in n/mm^2

Question 15. Briefly Explain The Capacity Of The Press ?

Answer :

Maximum amount of force can be given on the press . It is determined by KN or TONS.

Question 16. What Do You Meant By Cutting Clearance ?

Answer :

Gap between the side of the punch and corresponding side of the die in single side.

Question 17. Calculation Of Cutting Clearance ?

Answer :

Sheet metal up to 3mm = C*S* root of (TMAX/10)

Sheet metal more than 3 mm=(1.5*s) *(s-0.015)* root of (TM ax /10)

Question 18. What Is Called Land ?

Answer :

To avoid jamming of material inside the die ,we give straight portion of certain amount from the cutting edge. That is called land.

Question 19. What Are The Types Of Guide Plate Tool ?

Answer :

Open guide plate tool

Stripper guide plate tool

Question 20. Name The Types Of Cold Rolled Stock Materials Used ?

Answer :

Hard, Three quarter hard, Half hard, Quarter hard, Soft, Dead soft.

Question 21. What Are The Factors Effecting A Strip Layout ?

Answer :

Shape of the blank, production requirement, grain direction, burr side, stock material.

Question 22. What Is Scrap Bridge ?

Answer :

Portion of the material remaining between two adjacent openings.

Question 23. What Are The Types Of Strip Layout ?

Answer :

Single row layout, double row, gang dies and angular.

Question 24. The Ultimate Condition Of Buckling Force Is ……..?

Answer :

Buckling force =cutting force require for the operation =shear force on the punch

Question 25. What Is The Function Of Stopper ?

Answer :

Arrest the movement of the strip for one pitch length after each stroke.

Question 26. Describe Registry Position ?

Answer :

Exact position where strip has to be established.

Question 27. Tunnel Width Formula ?

Answer :

X = w + f

w = stock strip width at maximum tolerance

f = desired horizontal feeding clearance

Question 28. What Is Pitch ?

Answer :

Distance between two consecutive operations.

Question 29. What Is Strip Lay Out ?

Answer :

A layout which gives sequence of works and operations.

Question 30. Quarter Hard Material ?

Answer :

Can bend 180 degree across and 90 degree along the grain direction.