A variety of machining processes are available for making different kinds of parts. Two common machining processes are internal broaching and external broaching. Both of these processes have advantages and disadvantages, so deciding which process is the best option for a given application can be challenging. In this article, we will explore the differences between internal and external broaching and discuss each process’s pros and cons. Stay tuned!
What is Internal Broaching?
Internal broaching refers to a process that forces a tool into the workpiece, unlike surface broaching, which creates holes that cut an area of metal.
To internally broach an object made of metal, an existing hole has to be created. The broach changes the size and shape of the starter indent to create the hole using keyways, spline, hexagonal, square, or a custom-made profile.
A tool for broaching with successively larger and larger teeth, it pierces through the hole already in place by pushing or pulling on the metallic part.
External Broaching: what is it?
When broaching externally, materials are removed from the exterior layer of the workpiece. This is also referred to as surface broaches.
It takes material from the tool’s surface, cuts keyways, and creates slots. The teeth of external broach tools are also growing gradually.
External broaching machines are fitted with tables that can be moved or fixed for clamping and fixtures for locating. They are generally equipped with loading and unloading equipment that can be fully linked to machines before and after broaching. Automated tools and change systems are cutting-edge.
Internal Broaching And External Broaching: the difference
Broaching is a machining process that involves cutting or shaping a workpiece with a toothed cutting tool. There are two main types of broaching: internal and external. Internal broaching is used to create holes, slots, or keyways in a workpiece, while external broaching is used to create splines, gears, or other complex shapes on the surface of a workpiece. Both processes can be performed using either linear or rotary motion, requiring specialized tooling and equipment.
So, what’s the difference between internal and external broaching? Internal broaching uses a blind hole in the workpiece as a starting point, while external broaching starts outside the workpiece. This means that internal broaching can only be used on workpieces with an existing hole, while external broaching can be used on both solid and hollow workpieces. As a result of the larger cutting area, external broaching generally requires more force than internal broaching.
Both internal and external broaching are precision machining processes that can produce complex shapes and geometries. However, each process has its advantages and disadvantages that should be considered when choosing a machining method for a particular application.
Surface broaching machines are used to finish the surfaces of parts and components. These machines use a variety of tools to remove material from the workpiece, resulting in a smooth, even surface.
Final Thoughts
The two main types of broaching are internal and external. Internal broaching is done with a dull tool inserted into the hole, while external broaching uses a cutting edge applied to the outside of the part.
External broaching is more common because it generally produces a better surface finish and can be used on a wider range of materials. However, internal broaching can be used in tighter spaces and is less likely to cause damage to the part.
