Car arc ages bevel gear is machined

Arc tine bevel gear machines car drive axle the discretion of quality, affect the performance characteristics of the car directly, affect quality of mass of vehicle, accordingly, arc ages the workmanship of bevel gear has important place in automobile manufacturing industry. The graph shows a part 1 times is Qiqihaer finite liability company is 2 machine tools the bevel gear of tine of a kind of arc that some car plant produces, material is 40Cr. Graph requirement of technology of spare parts of 1 helix bevel gear belongs to swing tower this kind spare parts, modulus 6mm, tine number is 24, tooth form horn 20 ° , helix angle 35 ° , accuracy class 5 class. Workpiece includes the circle outside φ80js6 the circle outside two place, φ75h6 is main dimension, round mutual coaxial spends the circle outside requirement φ80js6 outside two place, φ75h6 0.

008mm, and round fiducial A beats outside the inner cone of requirement tine and φ80js6 tolerancepublic errand is in 0.

02 Mm, arc ages bevel gear ages ministry heat treatment quenchs. Its age the ministry is hard tooth flank, achieve its precision requirement not easily. The main method of finish machining of hard tooth flank of bevel gear of tine of arc of program of spare parts treatment has grind tine and roll flute two kinds. Grind the technique that tine is a tradition, manufacturing efficiency is tall, be out of shape in heat treatment not big case falls, grind the surface roughness that tine can change face of effective tooth form and osculatory position, correct tooth form and teeth directional error a little. But error of red-letter day of jumpy to eliminating radial circle, week, teeth shape error and other the error that because heat treatment is out of shape,causes, grind tine is helpless. Roll flute craft can obtain very tall treatment precision, used at the special situation such as accurate drive and aviation gear only in the past. Press the technical demand of this spare parts, made the treatment plan of two kinds of workpiece. Hard tooth flank undertakes grinding aging after the heat treatment that plan is arc tine bevel gear, specific means is to pass CKA6150 of numerical control car to press numerical control program the inner cone of bevel gear of tine of half essence, finish machining arc and back awl, machine an aperture of center of two end panel to be craft fiducial. All-purpose grinder is with central aperture fiducial, grinding gives the circle outside φ80js6 the circle outside two place, φ75h6 is main dimension, the arc of requirement; numerical control that makes sure its coaxial is spent ages mill YKD2280 uses 5 knives law to machine tine ministry, can make the osculatory area of tine ministry and exterior quality better. After tine ministry heat treatment, abrade tine ministry. Plan 2 it is arc after heat treatment of tine bevel gear roll flute of hard tooth flank. Specific means is to pass CKA6150 of numerical control car to press numerical control program the circle outside the inner cone of bevel gear of tine of half essence, finish machining arc and back awl and φ110mm as search fiducial, machine an aperture of center of two end panel to be craft fiducial; is all-purpose grinder with the center Kongwei is fiducial, grinding gives the circle outside φ80js6 the circle outside two place, φ75h6 is main dimension, and the circle outside grinding φ110mm as search fiducial, make sure its spend a requirement with coaxial of afore-mentioned the circle outside each 0.

008mm, round circularity is in outside φ110mm 0.

YKD2280 of mill of tine of arc of 008mm; numerical control uses odd numbers ministry of tine of bosseyed law treatment, tooth flank two sides stays each grind a quantity 0.

3mm. After tine ministry heat treatment, ministry of tine of grinding of roll flute machine. The place on put together is narrated, of the promotion as machine of roll flute of awl of tine of numerical control arc and wheelhead power increase, roll flute efficiency has comparatived with angrily efficiency, wide application was won in the industry such as mechanical, car and spaceflight, comfortable the processing technique of the efficient, low cost that produces at large quantities of quantities, high quality. The treatment program of this spare parts uses reason plan 2 carry out. 1) of working procedure of spare parts key presses the current situation of workpiece and material, semifinished product chooses forging, normalizing heat treatment has after workpiece forgings, in order to refine in-house grain organization, improve the cutting performance of workpiece. 2) workpiece rough machining, undertake moving pledging handling after rough machining, raise the intensity of workpiece and tenacity, make its have better integrated and mechanical performance, eliminate the internal stress of workpiece. 3) craft installation is fiducial, fiducial and search to deciding fiducially. Numerical control car digs central hole on two end panel as craft fiducial, all-purpose grind aperture of the two upright centers since the fastigium that use a top, the circle outside two place, φ75h6, circle outside φ110mm assures the circle outside grinding φ80js6 its coaxial is spent, rely on to grind a graph 1 in 61.

97mm dimension right end panel makes sure its are jumpy in 0.

Inside 005mm. the circle outside among them φ110mm as search fiducial, the circle outside φ80js6 and 61.

97mm dimension right end panel serves as installation fiducial. Before ministry of tine of grinding of machine of roll flute of case of gram forest shellfish, reach workpiece with the circle outside φ80js6 61.

97mm dimension right end panel serves as installation fiducial, install with roll flute clamping apparatus, search ministry of tine of the grinding after the circle outside φ110mm. Structure of roll flute clamping apparatus is shown 2 times like the graph, its are comprised by 1 fixed position covers number with 2 workpiece cooperate date installation; date 3 for Kelinbeige roll flute machine is covered among the belt oneself, with 1 fixed position covers number after cooperating to assemble, use a name aperture of whorl of M10 of 2 workpiece back end, with the clamp after screw of M10 of roll flute machine joins. Foreword of lathe work of 4) numerical control. In workpiece heart hole hits on two end panel endlong, by essence of numerical control program the car goes inner cone and back awl since the top, the finish machining after heat treatment of round put apart grinds a quantity outside the others. Foreword of milling of tine of arc of 5) numerical control: Numerical control arc ages mill machine tool adjusts the calculation of card, machine needs project parameter certainly, this it is with Gelisen bosseyed cutting law is calculated for the foundation each project parameter, computational formula can consult the reference book such as gear manual. Main item parameter sees a table 1. Numerical control arc ages mill machines each tine, arc ages on clamping apparatus, reach with the circle outside φ80js6 61.

97mm dimension right end panel is installation, mill ages transverse tooth thickness stays each grind a quantity 0.

3mm. Foreword of 6) all-purpose grinding work. Before tine ministry heat treatment, hind each have order of a all-purpose grinding work, the circle outside two place, φ75h6, circle outside φ110mm assures the circle outside grinding φ80js6 its coaxial is spent, rely on to grind 61.

97mm dimension right end panel makes sure its are jumpy in 0.

Inside 005mm. 7) overcomes foreword of mechanic of roll flute of Lin Bei case: Use KIMoS 5 software to use means of grinding of 2–Trace of 5 knives law, can get the most reasonable numerical value through optimizing, calculate thereby machine program of arc tine bevel gear. The machine program of arc tine bevel gear that gives according to computation, grinding ages each. The machine tool is online after detecting, turn over tone through Komet, eliminate with computation between the program error, reach thereby relatively perfect contact area. The choice of finish machining cutting tool 1.

Treatment of round, cone chooses hill spy dimension to overcome cutting tool outside, DCLNR 3225P 12 of cutter hub model, bit model CNMG12 04 08–WF. Cutting parameter sees a table 2. 2.

Tooth flank grinding chooses Rodden with cutting tool NORTON emery wheel, model 5SG60–JVS, norms 13.

8×3.

5×12″ . Cutting parameter sees a table 3. After epilogue uses afore-mentioned treatment methods to machine, this arc ages bevel gear reachs DIN2 level, area of the clench the teeth of gear, contact satisfies the requirement of the user completely. The arc tine bevel gear that supplied large quantities of system of quantities to make high quality, low noise for the user. (Author Liu roc) CNC Milling