Broaching machine does not require a quick return mechanism.

Quick return mechanism is a feature in machines that allows the cutting tool to move rapidly in one direction and then return quickly to its starting position. It is commonly used in machines like slotter, planer, and shaper to increase productivity and efficiency.

Here's an explanation of why broaching machine does not require a quick return mechanism:

1. Quick return mechanism:
- The quick return mechanism is designed to reduce non-productive time and increase the cutting speed of the machine.
- It allows the cutting tool to move quickly during the non-cutting stroke and then return rapidly to its starting position for the next cutting stroke.
- This mechanism is commonly found in machines like slotter, planer, and shaper, where the cutting tool moves back and forth in a linear motion.

2. Broaching machine:
- A broaching machine is used to perform a special machining operation called broaching.
- Broaching is a process that involves pushing or pulling a cutting tool called a broach over a workpiece to remove material in a linear motion.
- Unlike slotter, planer, and shaper, which have a reciprocating cutting motion, the broaching machine has a continuous cutting motion.
- The broach is usually pulled or pushed through the workpiece in a linear motion, without the need for a quick return mechanism.

3. Continuous cutting motion:
- In a broaching machine, the cutting tool moves continuously through the workpiece, removing material in a single pass.
- There is no need for the cutting tool to return to its starting position quickly because it continues to move in one direction until the operation is complete.
- This continuous cutting motion eliminates the need for a quick return mechanism in a broaching machine.

In summary, the broaching machine does not require a quick return mechanism because it operates on a continuous cutting motion, unlike slotter, planer, and shaper machines. The cutting tool in a broaching machine moves continuously in one direction, eliminating the need for a quick return motion.