The high speed part that machine tool main shaft uses contacts ball bearing

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  • source:LAURENDA CNC Machining
The high speed horn that Japanese essence is versed in development went machine tool main shaft to use contacts ball bearing (Angular Contact Ball Bearings) " Spinshot II " . Number of name of taper of its main shaft is 40, main shaft diameter is 65mm, below the requirement that with oil gas lubricant means imposes constant to decide pressure beforehand, realized the global top speed of 40 thousand Rpm, and reduced noise and air consumption. In oil gas lubricant means falls previously, if high speed rotates,can produce wind screen (Air Curtain) . Can make lube enters bearing interior hard not only so, bring about lubricant inadequacy, and still can produce wind to cut sound. To solve these problems, spinshot II used the external diameter from bearing to tilt place furnishs to bearing interior the means of lube. Because this lube can not get wind act,enter bearing interior block up, smoothly. New product undertook improvement to nozzle structure, through be in circumferential on setting groove will reduce atmospheric pressure, reduced wind to cut sound. The oil gas before signal to noise ratio of a confusion of voices is lubricant means reduces 3dB (A) . Because be below the circumstance with lesser throughput,also can furnish to bearing interior lube, because this air consumption is 10NL/ cent only, reduced the 1/2 left and right sides previously. Maintain implement used PEEK (get together ether aether ketone, polyetheretherketone) , the bearing data that outer lane and inner ring used Japanese energy industry to make " SHX material " . SHX material is right silicon was added on carbon steel foundation (Si) , manganese (Mn) reach molybdenum (Mo) after low-alloy steel undertakes rough machining, the processing that invades the surface at the same time through charcoal element and nitrogen letting below high temperature raises exterior hardness, form in imperceptible nitride of Si-Mn-N of exterior separate out. Have higher intensity, tenacity and be able to bear or endure agglomeration sex. CNC Milling