Indexable ball end mill for molds
The invention relates to an indexable ball end mill for molds. In the working process of high-hardness materials, the cutter is severely abraded and damaged; and since the mirror-face ball end mill used in the existing plant is non-indexing, after one blade loses effect, part of the ball end mill needs to be reground, and the rest of the ball end mill completely loses effect and can not continue in service, thereby lowering the production efficiency and increasing the use cost of the cutter. The ball end mill comprises a cutter holder (24), wherein a blade upper surface (5) is matched with a blade external surface matching surface A (29), a blade lower surface (19) is matched with a blade external surface matching surface B (32), the middle of the cutter holder is provided with a fastening screw hole, and the blade is connected with the cutter holder through a fastening screw (25). The indexable ball end mill for molds is used for cutters in the field of machining. 1. A mould for the indexable ball-end milling cutter, its composition includes: cutter bar, which is characterized in that: the blade upper surface and the blade surface with A with the outer surface, the lower surface of the blade with a blade with B the matching surface of the outer surface of the, blade arc-blade after the arc-blade face and with the surface of and accumulation range A B with matching surfaces, with the inclined plane and the blade and with a matching B A, said bar having a fastening screw hole in the middle, the blade through the fastening screw and the tool bar is connected. 2. Mould for the indexable ball-end milling cutter according to Claim 1, which is characterized in that: said blade has four circular arc cutting edge and four straight blade, are the circular arc cutting sunblade A and its adjacent A the front face, the rear face A, straight blade A, and the circular arc cutting sunblade B adjacent B the front face thereof, the rear face B, straight blade B, and the circular arc cutting sunblade C adjacent C the front face thereof, the rear face C, straight blade C, and the circular arc cutting sunblade D adjacent D the front face thereof, the rear face D, straight blade D, and the accumulation range of the respectively mating surfaces A the accumulation range, accumulation range with B the matching surface of the rear blade, the straight blade and the straight edge of the cutter bar A mating surface, straight blade with B the matching surface of the rear face, of the blade upper surface and the front face is the inclined plane C C transition portion, with the inclined plane of the cutter holder C B with the inclined plane, the lower surface of the blade and the front face is the inclined plane B B transition portion, with the inclined plane of the cutter holder B A with the inclined plane, the cutter milling prevent two cooperating clamping axial rotation, of the blade upper surface and the front face is the inclined plane A A transition portion, the lower surface of the blade and the front face is the inclined plane D D transition portion. 3. Mould for the indexable ball-end milling cutter as in Claim 1 or Claim 2, which is characterized in that: the mould uses indexable ball milling cutting in edge each of said arc-blade and each of said straight blade are made of the processing.