Silver oak college of engineering and technology SUBJECT: MP-1 Prepared By: DHRUV DARPAN DIVYANG URVIL Guide: RAVIRAJ

Broaching

Broaching Broaching is a method of removing material by a tool that has successively higher cutting edges in a fixed path Each tooth removes predetermined amount of material Job is completed in a single stroke The last tooth is conforming to the desired shape of finished surface Broaching operations can be performed on external as well as internal surfaces Typical Broaching operations include: Keyway Broaching Contour Broaching Spline Broaching

Broaching tool

Broaching tool

Principle of operation

Types of broaching machines Broaching machines may be classified on the following basis: Direction of Broach travel Horizontal Broaching Machine Vertical Broaching Machine Method of operation Pull Broaching Machine Push Broaching Machine Surface Broaching Machine Continuous Broaching Machine Method of drive Hydraulic Pneumatic Mechanical Type of operation External (for Surface Broaching) Internal (for Broaching a hole)

Horizontal Broaching machine

vertical Broaching machine

Pull and push Broaching

continuous Broaching machine

Advantages of broaching Both roughing and finishing operations are completed in one pass of the tool, giving high production rate Any form that can be reproduced on a broaching tool can be machined by broaching process Actual cutting time is a matter of few seconds. Rapid loading and unloading fixtures keep total production time to a minimum Internal or external surfaces can be machined within close tolerances. The accuracy of surface finish is of the order of 0.1 micron Simple operation and a possibility of automation Broaches have a long life Broad range of materials can be successfully machined with proper broach design and setup conditions

limitations of broaching Tooling cost is very high. So preferred for mass production only The broaching tool is made for a particular job only Surface to be broached should not have any obstruction Work-piece to be broached should be rigid and strong enough to withstand the cutting forces Broaching is not recommended for the removal of large amount of stock and short-run jobs All the elements of the broached surface must be parallel to the axis of travel

More resource https://www.mhi- global.com/products/detail/ind_broach.html