First experimental results reveal a strong dependency of the machinability of the aforementioned engineering materials on cutter inclination angles.
This work presents fragmentation models of traditional (CCS-type) and newly designed (according to 3D fragmentation theory) disc cutters based on the above research and with consideration of the effects of alternating cutter edge angles.
Theoretical study of the model demonstrated that modification of the disc-cutter edge angles leads to effective reduction of the specific energy of fragmentation, as discussed in Refs. [20], [21].
It is shown that during the processing with concaved shaping cutter the contact angle of the cutter with the workpiece changes in the height of the tool because of curved cutting teeth.
By employing the concept of velocity instant center, the cam profile, the path of cutter, the pressure angle and the radius of curvature of the cam can be expressed parametrically, and the follower motion of the remaining stroke can be analyzed analytically.
When a disc cutter passes through angle dγ (not shown in Fig. 6 for clarity), the corresponding point on the cutterhead also passes through angle dγ.
Through unit experiment under cross-cutting condition, this paper studies the influencing regularity of experimental parameters (including the cutter diameter, back rake angle, cross-cutting angle, cutters spacing and rock hardness etc).
He said he seen seen vehicles attacked with bolt cutters, chainsaws and angle grinders by migrants trying to stow away in trucks.
Its crowdfunding page carries Ikea-style instructions on how to dismantle a wire fence with a bolt-cutter and an angle grinder.
Finally, a method is prescribed for determining the working rake angles, clearance angles and wedge angles of the cutter based on the ISO-defined reference planes.
