Page 141 - CITS - Fitter - Trade Theory

FITTER - CITS

6 Coolant and Lubrication: Coolant or lubricant may be applied during the broaching process to reduce friction,
dissipate heat, and improve surface finish.
7 Completion: Once all cutting stages are completed, the broach tool is retracted, and the workpiece is removed
from the broaching machine. Depending on the application, additional finishing operations such as deburring
or surface grinding may be required.
8 Quality Inspection: The machined workpiece is inspected to ensure it meets the required specifications and
tolerances.
Broaching machines can be categorized into several types based on their design and functionality.
Here are the main types:
1 Vertical Broaching Machine: In this type, the broach tool is mounted vertically, and the workpiece is held
stationary. The broach is lowered or raised to performs the cutting operation.
2 Horizontal Broaching Machine: The broach tool is mounted horizontally in this type of machine. The work-
piece is typically held in a fixture that moves linearly while the broach remain stationary.

3 Surface Broaching Machine: Designed for cutting across the surface of a workpiece to create flat or contoured
surfaces.
1 Internal Broaching Machine: Used for cutting inside surfaces of a workpiece, such as keyways or splines
within a hole.

2 Continuous Chain Broaching Machine: Utilizes a continuous chain with cutting teeth to remove material
continuously along the workpiece.
3 Pot Broaching Machine: Designed for high-volume production, these machines use multiple broaches mounted
on a rotating turret for sequential cutting operations.

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CITS : CG & M - Fitter - Lesson 22