Advantages of using Broach Cutters
As a broach cutter cuts only on the periphery of the hole to be made, it has to remove much less material as compared to conventional drill bits which cut and remove the complete material of the hole. Broach cutters are considered to be 3 to 4 times faster than conventional drill bits. Also while using a twist drill bit or metal hole saw one has to do pre-drilling and step-drilling operations for bigger diameter holes, whereas a broach cutter requires no pre-drilling and step-drilling. It is a one-shot drilling operation.
The broach cutters have fewer teeth and less wear, therefore with a broach cutter holes can be made at higher or faster cutting speed and a faster feed rate of the drilling machine.
Because broach cutters do not have to drill/cut through the complete work piece, they require less thrust and thus less energy to drill through the material.
The hole made using a broach cutter is more finished, precise and accurate.
Due to the unique geometry of the broach cutters, making holes at awkward angles is also very easy.
The cooling of broach cutters is internal. The internal lubrication is provided through a hole with the help of a pilot pin. Internal lubrication makes the broach cutter faster and more efficient for deep hole drilling.
Does not require very powerful machines
As the broach cutters require very low RPM (from min 50 RPM), these cutters can be easily used with light duty drilling machines or portable magnetic base drilling machines.
150 mm diameter X 55 mm length TCT Broach cutter
Broach cutters biggest advantage is the variety of sizes. Broach cutters start from 12 mm diameter up to 150 mm diameter and more if required. Various cutting depth (length) of broach cutters can be sourced depending upon the requirement.
An HSS broach cutter can be easily re-sharpened on a grinding machine and can be re-used for drilling. Re-grinding can be done until the desired cutting length is available on the broach cutter.