CN103659204A - Special machining method of large module gear of heavy anchor machine - Google Patents

Abstract

The invention discloses a special machining method of a large module gear of a heavy anchor machine. The special machining method comprises the following steps that forging is conducted; rough machining of the end faces, the inner circle and the outer circle of a processed workpiece is conducted by using a lathe; a lifting hole is drilled; rough hobbing is conducted the workpiece by using a machining center; quenching and tempering is conducted on the gear; semi-finish machining of an inner hole, the end faces and crest circles is conducted by using the lathe; by making the end face of one side of a benchmark groove as a benchmark, the centerlines of any one pair of end face teeth are marked out, benchmark groove marks are made on crests, and the position line of each hole is marked out; each hole is drilled through a drilling machine; the inner hole and the two end faces are turned to preset sizes through the lathe in a finish machining mode; positioning is conducted according to a datum plane, and correction gear grinding is conducted on the crest circles; each hole in a gear ring is expanded, drilled and reamed. The special machining method has the advantages of saving materials, reducing cost and improving product mechanical properties.

Description

The special processing method of heavy windlass large module gear

Technical field

The present invention relates to a kind of processing method of gear, particularly a kind of special processing method of heavy windlass large module gear.

Background technology

Ocean engineering field is the major fields of China's 12 planning, and it mainly comprises the large ships such as marine drilling platform, large-scale marine crane barge, ocean piping work boats and ships, wind-power electricity generation installation ship; These extra large work boats and ships all can use large-scale exposed gear, and large-scale exposed gear is as one of gear-driven canonical form, on the Type Equipments such as the various crane of extra large work boats and ships, anchor winch, are widely used; Due to the particularity of ocean engineering, the manufacture of its opposite opened gear is had relatively high expectations; And general this gear adopts free forging process, not only making to forge cost improves, and be easy to produce deformation man-hour adding, no matter be heat treatment deformation or in machining process distortion be all inevitable and very rambunctious, so not only reduced production efficiency, and crudy can not get ensureing.

Summary of the invention

It is high that the technical problem that the present invention solves is to provide a kind of working (machining) efficiency, and the special processing method of the heavy windlass large module gear of good product quality.

For solving above technical problem, technical scheme of the present invention is: a kind of special processing method of heavy windlass large module gear, and its innovative point is, comprises the following steps:

A, forging: will get the raw materials ready and carry out ring rolling processing, and carry out normalized treatment after it is forged, and material examining report is provided;

B, utilize lathe to carry out the roughing of end face and inside and outside circle getting the raw materials ready after processing, and when car inside and outside circle, respectively stay the surplus of monolateral 5mm, during face work, both sides length is respectively stayed 8mm surplus;

C, the workpiece both ends of the surface after processing are passed through line, and bore hole for hoist 4-M24, attack dark 50mm, and position is on the circle of φ 500;

D, to workpiece, adopt 100% ultrasonic examination to detect;

E, machining center mill teeth m >=10; Step is: a, modeling, b, programming, c, machining center production and processing; Common normal is stayed 3mm---6mm surplus, the gear teeth portion obtaining after thick gear hobbing is carried out to chamfered;

F, gear is carried out to modifier treatment, makes its ball hardness number reach ball hardness number HB230---320;

G, the gear after modifier treatment is carried out to sampling test, by the performance of the modified rear workpiece of sampling and testing, after pass the test, the endoporus, end face and the outside circle that utilize lathe to carry out gear carry out semifinishing, the internal diameter of endoporus is stayed, 0.5mm surplus, the length of end face is stayed 6mm surplus, outside circle car, to size, is carved to baseline trough;

H, mill endoporus are to size φ

I, the gear after utilizing 100% ultrasonic wave to semifinishing carry out carrying out flaw detection;

In any two relative profiles of tooth on the same side of J, the flank profil that obtains, draw end-tooth center line after mill teeth, and do baseline trough sign at the tooth top of profile of tooth, mark the position line in each hole;

K, use each hole of drilling machine chamfering bit, and the diameter in each hole stays 8mm surplus;

L, machining center mill teeth, step is: a, modeling, b, programming, c, machining center production and processing; Standard milling cutter mill teeth m >=10; Common normal is stayed 0.8mm surplus;

M, the end relief after mill teeth is finished, deburring;

N, with datum level and Internal hole positioning, roll flute;

O, line cut keyway ;

P, with lathe by endoporus and both ends of the surface fine finishining car to preliminary dimension;

Q, with datum level location, outside circle is proofreaied and correct to roll flute;

R, processing is expanded, bores, is cut with scissors in each hole on gear ring;

S, tooth portion is carried out to 100%MT carrying out flaw detection, dimension control, is coated with antirust oil warehouse-in.

The invention has the beneficial effects as follows: adopt rolling ring technology generations for original free forging process, not only saved material, reduced forging cost, improve product mechanical performance simultaneously, hole for hoist has been added to man-hour, adopted U to bore processing, not only efficiency is high, and installation accuracy also can be guaranteed.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is spur gear end face structure schematic diagram of the present invention.

The specific embodiment

In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described:

The specific embodiment that shows as shown in Figure 1, Figure 2 the special processing method of a kind of heavy windlass large module gear of the present invention, comprises the following steps:

A special processing method for heavy windlass large module gear, is characterized in that, comprises the following steps:

A, forging: will get the raw materials ready and carry out ring rolling processing, and carry out normalized treatment after it is forged, and material examining report is provided;

B, utilize lathe to carry out the roughing of end face and inside and outside circle getting the raw materials ready after processing, and when car inside and outside circle, respectively stay the surplus of monolateral 5mm, during face work, both sides length is respectively stayed 8mm surplus;

C, the workpiece both ends of the surface after processing are passed through line, and bore hole for hoist 4-M24, attack dark 50mm, and position is on the circle of φ 500;

D, to workpiece, adopt 100% ultrasonic examination to detect;

E, machining center mill teeth m >=10; Step is: a, modeling, b, programming, c, machining center production and processing; Common normal is stayed 3mm---6mm surplus, the gear teeth portion obtaining after thick gear hobbing is carried out to chamfered;

F, gear is carried out to modifier treatment, makes its ball hardness number reach ball hardness number HB230---320;

G, the gear after modifier treatment is carried out to sampling test, by the performance of the modified rear workpiece of sampling and testing, after pass the test, the endoporus, end face and the outside circle that utilize lathe to carry out gear carry out semifinishing, the internal diameter of endoporus is stayed, 0.5mm surplus, the length of end face is stayed 6mm surplus, outside circle car, to size, is carved to baseline trough;

H, mill endoporus are to size φ

I, the gear after utilizing 100% ultrasonic wave to semifinishing carry out carrying out flaw detection;

In any two relative profiles of tooth on the same side of J, the flank profil that obtains, draw end-tooth center line after mill teeth, and do baseline trough sign at the tooth top of profile of tooth, mark the position line in each hole;

K, use each hole of drilling machine chamfering bit, and the diameter in each hole stays 8mm surplus;

L, machining center mill teeth, step is: a, modeling, b, programming, c, machining center production and processing; Standard milling cutter mill teeth m >=10; Common normal is stayed 0.8mm surplus;

M, the end relief after mill teeth is finished, deburring;

N, with datum level and Internal hole positioning, roll flute;

O, line cut keyway ;

P, with lathe by endoporus and both ends of the surface fine finishining car to preliminary dimension;

Q, with datum level location, outside circle is proofreaied and correct to roll flute;

R, processing is expanded, bores, is cut with scissors in each hole on gear ring;

S, tooth portion is carried out to 100%MT carrying out flaw detection, dimension control, is coated with antirust oil warehouse-in.The invention has the beneficial effects as follows: adopt rolling ring technology generations for original free forging process, not only material economy open die forging material requested 1/3, reduced forging cost, and improved product mechanical behavior value, the feature all rising outward according to workpiece inner ring and cylindrical, select reasonable layout margin value, not only make tooth face hardness improve, and improved operating efficiency.

Claims (4)

1. a docking calculation for stainless steel clad plate, stainless steel clad plate is divided into successively by layer: basic unit, transition zone and multiple layer, described basic unit is carbon steel layer; Described transition zone is two kinds of material interface portion; Multiple layer is stainless steel layer; It is characterized in that: this docking calculation is that a kind of 316L of take stainless steel is multiple layer, the docking calculation of the stainless steel clad plate that GL-D36 carbon steel is basic unit, its step:

1) before welding, prepare, the processing of groove, the two-sided finished edge of composite plate of needs welding, groove shape becomes V-shape;

2) docking of basic unit, welding base metal is: GL-D36+GL-D36, welded at twice, weld seam divides basalis and packed layer, manual gas shielded arc welding weldering basalis, throat depth exceeds 0 ~ 2 ㎜ than mother metal, back side carbon-point back chipping, polishing light; Manual gas shielded arc welding weldering packed layer, throat depth is than low 2 ~ 3 ㎜ of carbon steel layer; The interlayer temperature <150 ℃ of twice welding is clean the polishing of basalis solder side before weldering packed layer; Weld procedure specification parameter is: adopt 136 welding methods, welding wire is TWE-711Ni, and diameter is 1.4 ㎜, and source of welding current polarity is DCEP, electric current 280 ~ 350A, and voltage 32 ~ 35V, wire speed is 25 ~ 35cm/min, gas flow 18 ~ 25L/min; Welded after 24 hours and done ultrasonic examination, also wanted destressing tempering, tempering magnetic powder inspection after 24 hours;

3) docking of transition zone, will remove surface oxide layer before welding, face of weld polishing light, and the welding at twice of this layer, welding base metal is: 316L+GL-D36, ground floor adopts manual welding, throat depth 2.5 ~ 3 ㎜; The second layer adopts manual welding, throat depth 3 ~ 4 ㎜; Weld procedure specification parameter is: adopt 111 welding methods, ground floor wlding is PW-E309MOL-16, and diameter is 3.2 ㎜; Second layer wlding is PW-316L-16, and diameter is 3.2 ㎜; Source of welding current polarity is DCEP, electric current 120 ~ 150A, and welding rod speed is 22 ~ 27cm/min; The interlayer temperature <100 ℃ of twice welding is clean the polishing of the solder side of ground floor before the weldering second layer; Welding will be forbidden swinging, and controls welding linearity, and postwelding is done PT penetrant inspection for 24 hours;

4) docking of composite bed, welding base metal is: 316L-316L, solder flux model is: TFS-300, solder flux bake out temperature: 250 ~ 300 ℃, throat depth reaches than mother metal and exceeds 0 ~ 1 ㎜; Weld procedure specification parameter is: adopt 121 welding methods, wlding is TW-E316L, and diameter is 4 ㎜; Source of welding current polarity is RP, electric current 380 ~ 450A, and voltage 32 ~ 38V, wire speed is 28 ~ 32cm/min; Postwelding can't harm radiographic inspection.

2. the welding method of a kind of stainless steel clad plate according to claim 1, is characterized in that: the chemical composition mass percent of wlding TWE-711Ni is: C:0.036, Si:0.350, Mn:1.17, Cr: 0.010, Ni:0.460, P :≤0.015, S :≤0.015, Cu:0.020, Mo:0.010, V:0.020.

3. the welding method of a kind of stainless steel clad plate according to claim 1, is characterized in that: the chemical composition mass percent of welding rod PW-E309MOL-16 is: C:0.030, Si:0.3, Mn:1.4, Cr:22.5, Ni:13.5, P :≤0.021, S :≤0.009, Mo:2.7; The chemical composition mass percent of welding rod PW-316L-16 is: C:0.02, Si:0.3, Mn:1.4, Cr:19.0, Ni:12.0, P :≤0.02, S :≤0.01, Mo:2.8.

4. the welding method of a kind of stainless steel clad plate according to claim 1, is characterized in that: the chemical composition mass percent of wlding TW-E316L is: C:0.12, Si:0.90, Mn:1.0, Cr: 11.0 ~ 13.5, Ni:0.70, P :≤0.040, S :≤0.030, Cu:0.75, Mo:0.75, V:0.020.

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