How does machinery reduce the noise of gear in hardware treatment?

Decelerate machine cannot check through leaving factory, one of reasons are loud noise of intermittence of decelerate plane existence. By relapses test, analysis and improve an experiment, the conclusion that reach is to need to what produce each link have general management, ability reduces the noise of positive drive effectively.
1, the precision that controls gear wheel: The main demand of gear precision: Via carrying out test and verify, gear precision needs control is in GB10995 - 887~8 class, gear of 20m/s of linear velocity prep above, it is certain that pitch extreme deviation, tine encircles radial and jumpy public errand, teeth directional public errand otherwise chaos achieves 7 class precision. Below the condition that obtains gear of 7 class precision, tine ministry should pour shuttle, should beware stage of tine root protruding.
2, the quality that controls raw material: High quality raw material is to produce the conditional premise of high quality product, the material 40Cr with my company the biggest dosage makes gear with 45 steel. Why to no matter pass,plant way, granuality of the chemical component overhaul with strict by, brilliant wants to determine after raw material reachs a plant, spend assess chastely. Its purpose is to adjust heat treatment in time to be out of shape, ascensive tooth form machines medium quality.
3, prevent heat treatment to be out of shape: Tine base is in forging of essence of rough machining epigenesis, undertake normalizing or move qualitative processing, in order to achieve:
(1) bate steel so that undertake cutting is machined;
(2) eliminate leftover stress;
(3) refine grain, improvement organizes the mechanical function with ascensive steel;
(4) for culminating the provision that can handle good textural. Should advertent is, in qualitative processing of normalizing or attune, must maintain temperature of the chamber of a stove or furnace average, and employ worker worker appliance, make workpiece heats on average reach refrigeration, forbidden pile up together. Need bore to reduce the gear of weight, should have bore order put in order after heat treatment. The culminating heat treatment of gear is used make the spare parts is out of shape lesser tooth flank is high frequency quench; High frequency the tooth flank that after quenching, gets has high intensity, hardness, wearability and tired out limit, and the plasticity that core still maintains enough and tenacity. Be out of shape to decrease. Tooth flank is high frequency quench should use quench temperature is mixed inferiorly shorter heat time, average, slow refrigeration.
4, the precision that assures tine base: The precision of the dimension of gear aperture asks the intermediate poor left and right sides that is worth in the deviation of aperture distributings, be in surely ±0.003~±0.005mm; If out of tolerance and inside the design requirement limits in aperture, indispensible classification, turn into angrily working procedure respectively. The end panel of tine base is jumpy reach radial to beat for 6 class, it is surely inside 0.01~0.02mm limits.
5, angrily machines measure: The gear cutting tool that buys external is indispensible undertake the overhaul, indispensible achieve AA class requirement. After blade of gear cutting tool is ground, need of red-letter day of week of the photograph adjacent difference of circular pitch of the radial to face of the blade before cutting tool sex, chamfer that hold bit, chamfer that hold bit the biggest accumulate error, tooth in front with inside aperture axes parallelism undertakes the overhaul. Below the condition that does not affect gear intensity, coefficient of ascensive height of teeth top, increase 0.05~0.1m, , improve coefficient of cutting tool height of teeth top, avoid positive drive to age the root is interfered. The gear of M=1~2 uses tine to carry the hob that repair a circle on the head, xiu Yuan measures R=0.1~0.15m. Eliminate tine to carry burr on the head, the tine when improving positive drive carries interference on the head. Fan noise it is the noise source with the mainest tower of refrigeration of mechanical leak type, this noise is noise of air motive force, include to swift current noise is mixed rotate noise. The theoretical analysis that uses force noise source according to air is knowable, the sound intensity of onflow noise and air current are opposite of speed just become direct ratio 6 times, also wait with blade appearance about, have successive spectrum character. Rotate when blade rotates, noise forms pulsatile generation, discharge of it and blade number, gas, static pressure wait about, its spectrum shows character of low intermediate frequency. Angrily equipment should undertake precision is checked every year, what short of asks is indispensible undertake maintaining. Wire-puller often also should have self check, it is in control of bottom clearance of machine tool main shaft especially under 0.01mm, cutter shaft diameter jumps 0.005mm is the following, cutter shaft change moves 0.008mm the following. The installation precision of cutting tool: Cutting tool radial beats control is under 0.003mm, end panel is jumpy 0.004mm is the following. Angrily tool precision, the clearance of arbor external diameter and workpiece aperture, assure to be in 0.001~0.004mm less than. The whorl on arbor is indispensible kind of fixed position supports to fall in third, undertake grinding by whorl bed: Verticality ≦ 0.003mm, diameter jumps ≦ 0.005mm. Nut is indispensible assure inside outfit clip car becomes whorl and datum plane, the parallelism ≦ 0.003mm of washerbed down the livestock.
6, civilization produces: The reason that positive drive noise has 30% above comes from injury of burr, knock against. SomeManufacturer of storage rackBefore gear case is assembled, purify burr and knock against are hurt, it is a kind of passive practice. (1) gear axis kind spare parts, ministry of the tine after gear hobbing is covered immediately on next line working procedure turn after plastic protection covers appropriative, taking appropriative plastic protection is covered put in storage and deliver goods. (2) have technology of top gem tine, reduce tooth flank thick clumsy to spend, purify burr, prevent knock against injury, reduce positive drive noise effectively.
7, take kind of other material and heat treatment, finishing: (1) can use pulverous metallurgy to shape technology, ministry of the tine after gear shapes is high frequency quench. (2) use Mo Zhu iron, after gear cutting is machined, undertake soft nitrogen changes processing again. (3) use 40Cr data, after gear cutting result is versed in, use soft nitrogen to change processing or processing of tine ministry copper facing. Comprehensive institute is narrated, should effect a radical cure positive drive noise, gear material and heat treatment are to want this, tine base precision is to assure, gear precision is a hub, civilization produces is a foundation.
More content: Www.onsonhardware.com/#