Mechanical Engineering - Workshop Technology - Discussion

The correct answer is: combination die.

A combination die is a type of die that combines two or more operations, such as blanking and piercing, into a single die. This allows for multiple operations to be performed simultaneously, increasing efficiency and productivity.

In a combination die, the blanking and piercing operations are performed in a single stroke of the press, using a single die. This eliminates the need for multiple dies and reduces the number of operations required to produce a part.

Here's why the other options are incorrect:

- Simple die: A simple die performs only one operation, such as blanking or piercing, but not both simultaneously.
- Progressive die: A progressive die performs multiple operations in a sequence, but not simultaneously. Each operation is performed in a separate station, and the part is progressed from one station to the next.
- Compound die: A compound die performs multiple operations, but they are typically performed in a sequence, not simultaneously. A compound die is similar to a progressive die but has multiple operations performed in a single station.

Combination dies are commonly used in high-volume production runs where efficiency and productivity are critical.

Option B is the correct answer.

In progressive die also blanking and piercing operation are done simultaneously.

Only single operation is performed in simple die.

Compound die : perform two cutting operation like (blanking & piercing) in one stroke of the ram.

Blanking operation is cutting a circular shape and piercing operation is cutting other than circular example - square, rectangular etc.

Combination dies: A die in which a cutting operation is combined with a non-cutting operation is referred to as a combination die.

The cutting operations may include blanking, piercing, trimming, and cutoff and are combined with non-cutting operations which may include bending, extruding, embossing, and forming.

1- Simple die- only one operation is performed for each strokes of the press ram.
2- Compound die-two or more cutting operation in one station in every strokes of the ram.
3- Combination die-two or more cutting operation in one station in the single strokes of the ram.
4- Progressive die-two or more cutting operation in different station.

Compound die - two or more cutting operation in one station.

Progressive die - two or more cutting operation in different station.