BROACHING
Broaching: Overview & Advantages
What is Broaching?
Broaching is a machining process that uses a multi-tooth cutting tool (broach) to remove material in a single pass. It is used to create precise holes, slots, splines, and keyways with high accuracy and surface finish.
Advantages of Broaching:
✅ High Precision & Accuracy – Produces accurate dimensions and smooth finishes.
✅ Fast Production Rate – Removes material in one stroke, reducing machining time.
✅ Complex Shapes in One Pass – Can create keyways, gears, splines, and hexagonal holes.
✅ Less Operator Skill Required – Once set up, broaching is an automated process.
✅ High Surface Finish – Provides a better finish than conventional machining.
Types of Broaching
1. Based on Operation
🔹 Internal Broaching: Used for machining holes, splines, and keyways inside a workpiece.
🔹 External (Surface) Broaching: Used for machining flat or contoured surfaces on a workpiece.
2. Based on Motion
🔹 Pull Broaching: The broach is pulled through the workpiece (most common).
🔹 Push Broaching: The broach is pushed through the workpiece (used for shorter cuts).
3. Based on Broach Type
🔹 Linear Broaching: The broach moves in a straight line (common in industrial applications).
🔹 Rotary Broaching: The broach rotates while cutting, used for hexagonal or spline holes.
4. Based on Cutting Style
🔹 Progressive Broaching: Each tooth cuts slightly deeper than the previous one.
🔹 Combination Broaching: A single tool performs roughing, semi-finishing, and finishing.
5. Special Types of Broaching
🔹 Straddle Broaching: Two broaches work simultaneously to cut opposite sides.
🔹 Pot Broaching: Used for external spline cutting by passing the workpiece through a fixed broach.
