Of CNC Milling advocate when transmission system earth is made, wait for component to be answered via ultra hair as a result of gear, bearing, deliver in systematic interior appeared with radiation noise, and these components because appeared unusual situation, make stimulate brace up force is increased make noise increases thereby. How is noise of CNC Milling bearing controlled? 1, quality of the outer shroud inside control. Of breakdown milling machine advocate in transmission system, all bearing are core roll, outer shroud is fixed. At this moment core slants like occurrence radial place can cause when rotating lopsided, appear thereby oscillatory noise. If the outer shroud of bearing, cooperate aperture when appearance and positional public errand are bad, swing with respect to meeting occurrence radial, what destroyed bearing part so is homocentric degree. If the side direction of core and outer shroud end panel appears bigger jumpy, still can cause bearing core appearance askew to outer shroud happening. The precision of bearing is taller, afore-mentioned slant place an amount smaller, occurrence noise is less also. Outside eliminating error of appearance of geometry of annulus of control bearing inside and outside, return the ripple that should control raceway of annulus of inside and outside to spend, reduce exterior surface roughness, strict control is assembling the exterior gouge of the raceway in the process and cut, reduce the oscillatory noise of bearing impossibly otherwise. Via observing discovery, the ripple of raceway is spent when be close wave or Shu Bo, the osculatory dot when scroll body is rolling differs apparently, the oscillatory frequency that causes from this differs very big. 2, control bearing and aperture and axis cooperate precision. Of this breakdown milling machine advocate in transmission system, of bearing and axis and aperture cooperate, should assure the bottom clearance that bearing is necessary. The better numerical value of radial work space, be go up in the axis by core and outer shroud cooperates mediumly in aperture, and the place of difference in temperature that arises in the core below athletic condition and outer shroud place decides. Because the choice of initiative clearance in this bearing is right,the noise of control bearing has important sense. Too big bottom clearance can bring about the noise of low frequency part to increase, and the noise that lesser bottom clearance can cause high frequency share again increases, general space control is in 0. Had compared when 01mm. Outer shroud cooperates a form mediumly to be able to affect the transmission of noise in aperture. Closer cooperate to be able to raise acoustic conductivity, make noise is increased thereby. Pass to cooperate closely, can force raceway to be out of shape, increase the appearance error of bearing raceway thereby, make bottom clearance is reduced, also bring about the addition of noise. The cooperates to be able to make journal and aperture contact are in oily film with only proper degree of tightness produces damp to outer shroud vibration, reduce noise thereby. Additional, the form that cooperates place tolerancepublic errand and exterior surface roughness, should accord with the requirement that chooses bearing accuracy class. If bearing is installed closely,go up in treatment inaccurate axis, so axial error can deliver bearing core raceway, spend formal expression to come out with taller ripple, noise also increases subsequently. To CNC Milling the control of bearing can pass above means to undertake. CNC Milling
CNC Machining