An attachment for a vertical mill having a quill and a spindle rotatably mounted within the quill which is adapted to rotatably drive one end of a milling cutter. The attachment includes an elongated housing having a semi-cylindrical cavity and in which one end of the housing is clampingly secured to the quill of the vertical mill. In doing so, the milling cutter is contained at least partially within the cylindrical cavity. A rotatable center is rotatably mounted to the other end of the housing and the center is positioned within a conical recess at the lower or free end of the milling cutter or, alternatively, a pilot on the cutter is rotatably received in the other end of the housing. The housing together with the center thus allows the cutter to freely rotate with the spindle while simultaneously supporting the cutter against lateral deflection with respect to its axis of rotation.
The present invention relates to a machine for milling the ends of ingots or slabs, which comprises a fixed standard, a broach head mounted to slide on two vertical guiding slideways with which said standard is provided and bearing a horizontal-axis cylindrical mill. The fixed standard, oversized, presents a transverse conduit opening out between the two slideways in front of the mill. The piece to be machined is disposed in this conduit and fixed by fixation means placed as close as possible to the slideways.
An end mill for simultaneously milling two intersecting perpendicular surfaces of a part. The end mill is subjected to side cutting loads causing side deflection of the end mill, with the result that both the side-milled surface and the end-milled surface are not cut true to the part. To compensate for end mill deflection, a cam arrangement is provided to adjust the position of the end mill.
