Honing Machine (honing machine): The use of the workpiece surface finish honing Hone Tube head grinder . Mainly used in automobiles, tractors, hydraulic parts , bearings, aviation and other manufacturing honing the workpiece hole . Honing machine has vertical and horizontal . Vertical honing machine spindle working stroke is shorter, for honing the cylinder and cabinet hole and so on. Inlaid with Whetstone honing head by the vertical placement of the spindle is rotated , while the hydraulic device drivers mainly as vertical reciprocating feed motion ( see machine ) . Horizontal honing machine working stroke is longer, for honing hole depth of up to 3000 mm . Horizontal placement honing head does not rotate , only for axial reciprocating movement of the workpiece is rotated by the spindle , bed Central features supporting a workpiece support center frame and honing rod guide frame . In the process , the honing stone head in a radial expansion and contraction under the action of the feed mechanism , the workpiece machined to the desired step size. The new hydraulic honing machine honing head swelling and shrinkage . Honing machines are mostly semi-automatic , often with automatic measuring devices , but also incorporate automatic production line work . In addition to processing bore honing machine , there are other surface machining cylindrical honing machines, honing machines bearing raceway , flat honing machines and honing machines and other surfaces .
Eustachian Hone Tube dysfunction causes a mechanical obstruction, such as hypertrophy, hypertrophic rhinitis, nasopharyngeal tumors or lymphoproliferative long nasopharynx and choanal tamponade; another company eustachian tube opening and closing of muscle contraction weakness, local middle ear can cause infection or allergic reaction eustachian tube dysfunction. Eustachian tube dysfunction can cause long-term hearing loss, secretory otitis media. Should be actively treated. General treatment with topical nasal instillation ephedrine nasal drops, inflammation eliminated feasible eustachian tube blowing Zhang, and aggressive treatment and prevention of the nose, pharynx, larynx and other diseases.