Broaching considerations
Calculation of broach cutting load
Calculation of pulling force
Predicted load (kgf) = cutting width (mm)x1 cutting depth (mm)x cutting resistance per unit area (kgf/mm²) x number of simultaneous cutting edges safe load (kgf) = 1.8x Predicted load (kgf)
The expected load is the cutting force necessary for the processing of the broach in the normal state. With the constant wear of the broach blade. It is necessary to increase the cutting force one by one, but the broach will be damaged after it is increased to a certain extent, or the broach will stop during cutting due to poor maintenance of the broach. Safety load is the allowable cutting force to prevent the above situation.
Calculation of pulling force Expected force(Kgf) =Cutting width x Cutting depth/1 tooth(mm) x specific cutting resistance(kgf/mm²) x number of simultaneous Safety load(kgf)=1.8 x Expected force(kgf).
Expected force means that necessary cutting force for broaching under norma1 condition. Safety load is permitted cutting force.
Relationship between broach full length and broach stroke
Broach cutter length and machines stroke
The length of the broach is limited by the stroke of the broach and the clamp.
Pull blade length rear shank length (MAX)= (maximum stroke)-(workpiece cutting length)
Required stroke = cutting length of workpiece with long blade and length of shank after cutting Due to the continuous improvement of the product, the sample technical parameters are subject to change without notice. Broach cutter length and machines stroke Broach length is limited by machine stroke and jig/fixture Broach cutter teeth length length of rear shank=(Max stroke)-(cutting length) Necessary stroke=Teeth length length of rear shank Broaching length Description and specifications given in this catalogue are subject to modification without notice.
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