The choice of cutting tool of numerical control milling machine

Treatment of cutting of numerical control milling machine has high speed, efficient characteristic, with cutting of traditional milling machine treatment is compared, numerical control milling machine is more expensive to the requirement of cutting treatment cutting tool, the tigidity of milling cutting tool, intensity, durability and installation adjust a method to be met the work efficiency that affects cutting treatment directly; The itself precision of cutting tool, dimension stability can affect the treatment quality of the treatment precision of workpiece and surface directly, reasonable choosing cutting cutting tool also is one of serious content in craft of numerical control treatment.

1.Of aperture treatment cutting tool choose

1) treatment of aperture of numerical control machine tool does not have jig commonly, because the tigidity of broach and cutting condition are poor, choose broach diameter D to should satisfy L/D ≤ 5 (L is bore deepness) condition.

2) fixed position is gotten with the center first before bore, assure the fixed position precision that Kong Jia is versed in.

3) aperture of bore with a reamer of essence of life can choose float to wring a knife, the orifice before aperture of bore with a reamer should pour wine cup.

4) the head of much blade boring cutter that semmetry should choose as far as possible when boring hole undertakes cutting, in order to balance radial load, reduce boring vibration.

5) choose as far as possible thicker with shorter arbor, in order to reduce cutting vibration.

2.Milling machines cutting tool to choose

1) set outfit is not heavy grind but the milling cutter of razor blade of dislocation hard alloy basically cuts plane with Yu Xi, diameter of the milling cutter when thick mill is chosen a few smaller, diameter of the milling cutter when mill of essence of life is chosen a few bigger, when mental allowance big and when surplus is inhomogenous, cutting tool diameter is chosen a few smaller, because receive Dao Daohen,can cause otherwise too deep and the treatment quality that affects work.

2) when to establish body curved surface or changing workpiece of appearance of bevel angle outline is machined, often use ball head milling cutter, annular milling cutter, bosomy form milling cutter, cone-shaped milling cutter, dish form milling cutter.

3) high-speed steel establishs milling cutter multi-purpose at machining protruding stage and groove. If mental allowance is lesser, when demand of exterior surface roughness is higher, can choose the end panel milling cutter that sets cubic metre to nitrogen changes boracic bit or set bit of pottery and porcelain.

4) the rough machining of semifinished product surface or aperture, can choose the corn milling cutter that mounts hard metal to undertake puissant cutting.