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steel ball bearing - China Manufacturer
Thank you for inquiry my steel ball bearing, Tel : 0086-0379-64390888, E-mail: liuping@lyzyc.cc
http://www.lyzycbearing.com/key-stainless-steel-ball-bearings-12/
Machining L / D> 5 hole machining can be called deep hole, following difficulties with ordinary twist drill drilling deep holes.bearings high speed
1. Slender drill. Poor rigidity, and processing drill easy bending and vibration, it is difficult to ensure the hole straightness and machining accuracy.
2. Swarf, to the exclusion of the long and narrow channel of the chip, the chip is not easily discharged.
3. Deep hole cutting fluid is not easy to enter, cutting temperature, cooling difficulties, the drill is easy to break.
Deep-hole drilling process can be divided into solid objects drilling, reaming nesting species, while drilling in the solid material used up, such as the 480 cam deep hole gun drill by 2 processing. Each drilling depth for the L / 2 +10 mm.the roller bearing company
Drilling gun drill is a single-edged outside chip, is generally applicable to the processing φ2-φ20mm hole L / D> 100, surface roughness Ra12.5-3.2mm, precision H8-H10 level hole. Single blade outside BTA deep hole drill , the earliest for the processing of the barrel, it said the only way the gun drill also φ2-φ6mm deep hole machining. Gun drill with a V-shaped cutting blade and a cutting fluid hole drill, drill pipe, and applicable to a dedicated device drill shank composed. High pressure cutting fluid (7MPa) is sent to the cutting area through the orifice of the drill bit, for cooling, lubrication and helping Paixie chips and cutting fluid, and then discharged into the concentrated cooling system along the V-type toolholder. Drill for carbide welded structure. Cutting the amount is generally 0.06-0.1mm / r, in order to better control the degree of damage to the tool, the tool radial load feedback Once the tool cutting force reaches a certain value, the role of the NC system, the tool can automatically returned, thus avoid gun drill break, to improve the life of the tool. The blunt tool replaced, re sharpening before use.bearings high speed
Camshaft deep hole machining coolant Usually spindle oil, although the cooling effect of the oil is worse than emulsion, but the oil of lubricating effect than the cooling liquid to be much better.
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