CN104589002A - Manufacturing technology of hollow outer gear of electric forklift driving flange - Google Patents
Manufacturing technology of hollow outer gear of electric forklift driving flange Download PDFInfo
- Publication number
- CN104589002A CN104589002A CN201410663847.8A CN201410663847A CN104589002A CN 104589002 A CN104589002 A CN 104589002A CN 201410663847 A CN201410663847 A CN 201410663847A CN 104589002 A CN104589002 A CN 104589002A
- Authority
- CN
- China
- Prior art keywords
- blank
- hollow
- electri forklift
- external gear
- technology
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000005516 engineering processes Methods 0.000 title abstract description 9
- 238000005242 forging Methods 0.000 claims abstract description 15
- 239000011248 coating agents Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 238000005255 carburizing Methods 0.000 claims abstract description 6
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000171 quenching Effects 0.000 claims abstract description 6
- 238000005488 sandblasting Methods 0.000 claims abstract description 6
- 238000007514 turning Methods 0.000 claims abstract description 5
- 238000005422 blasting Methods 0.000 claims abstract description 4
- 241001081830 Degeneriaceae Species 0.000 claims description 22
- 238000000034 methods Methods 0.000 claims description 10
- 239000002184 metals Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 238000010000 carbonizing Methods 0.000 claims description 3
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- 239000001308 nitrogen Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound 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OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 239000007921 sprays Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 239000007787 solids Substances 0.000 claims description 2
- 239000000463 materials Substances 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000000137 annealing Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000000641 cold extrusion Methods 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound 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- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Abstract
The invention discloses a manufacturing technology of a hollow outer gear of an electric forklift driving flange. The manufacturing technology includes the following steps that material cut-off is performed, skinning is performed, shot blasting is performed, coating is performed, upsetting is performed, a center hole is extruded, spheroidizing annealing is performed, blank making is performed, shot blasting is performed, phosphorus saponification treatment is performed, cold extrusion is performed on outer teeth, turning is performed, carburizing and quenching are performed, surface sand blasting is performed, and cleaning and oiling are performed. The hollow outer gear produced through the technology is stable in quality, and the accumulation error between tooth profiles is small. The finished product rate is high, production efficiency is improved, the production period is short, the method that after hot forging, a machine tool is mainly adopted for machining is replaced, the operation quantity of machine tool machining is reduced, the requirement for precision can be met, the manufacturing cost is lowered, and the manufacturing period is shortened.
Description
Technical field
The present invention relates to the processing technology of flange gear ring, particularly relate to a kind of finish forge extrusion molding production technology of electri forklift drive flange hollow external gear.
Background technology
Electri forklift drive flange hollow external gear is that one is arranged on electri forklift clutch and uploads graduating power, moment stressed larger vital part.Electri forklift drive flange hollow external gear external belt geared surface, transmits power, and transmission requires high, require very high to its accuracy of manufacture and Gear Surface Strength, present manufacture flange gear ring generally adopts traditional cutting technology, and this processing mode production efficiency is low, and metal material utilization rate is low, material inside organization loosens, the most important thing is that metal streamline is cut off, product mechanical strength reduces, and tooth easily occurs and damages phenomenon, production cycle is long, and cost is high.
Summary of the invention
The invention provides a kind of electri forklift drive flange hollow external gear manufacturing process, adopt warm cold closed-die forging compound plastic forming technology, first jumping-up, center squeezing; then bottom is cut and turning makes preformed blank, then cold closed-die forging extrusion molding external tooth form, equipment investment is few; technique is simple; the flank of tooth accuracy of manufacture is good, and intensity is high, with short production cycle; cost is low; efficiency is high, both saves raw material, protects production environment again.
The present invention is achieved by the following technical solution:
Electri forklift drive flange hollow external gear manufacturing process, comprises the following steps:
1. warm forging plastic forming: solid cylindrical metal charge is heated to forging temperature, die forging goes out hollow flange shape blank; 2. spheroidizing; 3. base; 4. ball blast, phospholeum process; 5. cold-extruded external tooth: the blank that phospholeumization is good is put into external tooth die cold closed-die forging extrusion molding external tooth; 6. Vehicle Processing; 7. carburizing and quenching; 8. surface sand-blasting process; 9. oiling is cleaned.
Described warm forging moulding process comprises a, fracture: circular saw intercepts metal bar; B, peeling, ball blast: to metal bar sizing scale, turning, end chamfer, ball blast: blank is put into shot-blasting machine and carries out surface sand-blasting; C, coating: the blank heating of having been got well by ball blast 200 DEG C ~ 250 DEG C, then sprays rare graphite; D, jumping-up: the blank good by above-mentioned coating, the die pier that heating in medium frequency to 920 ~ 980 DEG C put into 200 DEG C ~ about 300 DEG C slightly extrudes, and squeezes out flange end and small boss; E, center squeezing be (3): the blank that jumping-up is good is put into centre bore mould squeezed out with bottom.
Described spheroidizing is, under nitrogen protection, vacuum state, blank heating is incubated 3 ~ 4 hours to 760 ~ 800 DEG C, is cooled to 670 ~ 720 DEG C of insulations 3 ~ 4 hours, cools to less than 350 DEG C with the furnace and come out of the stove, vacuum 0.06-0.07Mpa.
Described base is excision bottom and car centre bore and hollow circuit cylinder cylindrical.
The case-carbonizing thickness of described carburizing and quenching is 0.4 ~ 0.6mm.
Beneficial effect of the present invention: the present invention produce constant product quality, yield rate is high, intensity is large, density is high, shock resistance; production effect is high; production cycle shortens; save raw material; reduce production cost, also protect production environment; adopt machine tooling in a large number after instead of forge hot, decrease mach workload.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of electri forklift drive flange of embodiment of the present invention hollow external gear;
Fig. 2 is blank deformation flow chart in embodiment of the present invention electri forklift drive flange hollow external gear manufacturing process;
Fig. 3 is the process chart of the embodiment of the present invention.
Sequence number in figure: 1, flange end, 2, small boss, 3, centre bore, 4, external tooth, 5, hollow circuit cylinder, 6, bottom.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings technical scheme of the present invention is described in further detail.
A kind of electri forklift drive flange hollow external gear, one end is flange end 1, the other end is the hollow circuit cylinder 5 with external tooth 4, and the top of corresponding hollow circuit cylinder 5 outer wall flange end 1 is provided with circular small boss 2, and the outer wall of hollow circuit cylinder 5 is provided with changeover portion between external tooth 4 and flange end 1, the diameter of the centre bore 3 of hollow circuit cylinder 5 is Φ 70.2mm, the parameter of external tooth 4: tooth root dia Φ 87.8mm, tooth top footpath Φ 94.36mm, reference diameter Φ 92.075mm, the number of teeth 29, tooth cone angle is 30 °.
This electri forklift drive flange hollow external gear manufacturing process, comprises the following steps: 1. warm forging plastic forming: a, fracture: select bar by design drawing, and circular saw intercepts metal bar; B, peeling, ball blast: to metal bar sizing scale, turning, end chamfer, ball blast: remove blank surface lathe tool trace, reduce roughness Ra value; C, coating: the blank heating of having been got well by ball blast 220 DEG C, then sprays rare graphite; D, jumping-up: the blank good by above-mentioned coating, be heated to 950 DEG C of die piers putting into 300 DEG C and slightly extrude, and forms flange end 1 and upper circular small boss 2 thereof; E, center squeezing 3: the mould blank that jumping-up is good being put into 630T hydraulic press squeezes out the centre bore 3 with bottom 6; 2. spheroidizing: under nitrogen protection, vacuum state, to 760-800 DEG C, 3-4 hour is incubated to the blank heating after rolling ring; be cooled to 660-720 DEG C of insulation 3-4 hour; cool to less than 350 DEG C with the furnace to come out of the stove; vacuum 0.06-0.07Mpa; make blank even tissue; Oxygen potential >=90%, hardness 180HB-260HB; 3. base: excision bottom 6 and car centre bore 3 and hollow circuit cylinder 5 cylindrical; 4. ball blast, phospholeum process: remove surperficial tool marks, reduces surface roughness value, increases surface lubrication; 5. cold-extruded external tooth: adopt 630T hydraulic press, the blank that phospholeumization is good is put into external tooth die cold closed-die forging extrusion molding external tooth 4; 6. Vehicle Processing: reach drawing required size and shape need by Vehicle Processing; 7. carburizing and quenching: case-carbonizing thickness 0.4mm, improves case hardness and intensity; 8. surface sand-blasting process; 9. oiling is cleaned.
Embodiment is just for the ease of understanding technical scheme of the present invention; do not form limiting the scope of the invention; every do not depart from technical solution of the present invention interior perhaps above scheme is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong within scope.
Claims (5)
1. electri forklift drive flange hollow external gear manufacturing process, comprises the following steps:
1. warm forging plastic forming: solid cylindrical metal charge is heated to forging temperature, die forging goes out hollow flange shape blank; 2. spheroidizing; 3. base; 4. ball blast, phospholeum process; 5. cold-extruded external tooth: the blank that phospholeumization is good is put into external tooth die cold closed-die forging extrusion molding external tooth (4); 6. Vehicle Processing; 7. carburizing and quenching; 8. surface sand-blasting process; 9. oiling is cleaned.
2. electri forklift drive flange hollow external gear manufacturing process according to claim 1, is characterized in that: described warm forging moulding process comprises a, fracture: circular saw intercepts metal bar; B, peeling, ball blast: to metal bar sizing scale, turning, end chamfer, ball blast: blank is put into shot-blasting machine and carries out surface sand-blasting; C, coating: the blank heating of having been got well by ball blast 200 DEG C ~ 250 DEG C, then sprays rare graphite; D, jumping-up: the blank good by above-mentioned coating, the die pier that heating in medium frequency to 920 ~ 980 DEG C put into 200 DEG C ~ about 300 DEG C slightly extrudes, squeeze out flange end (1) with small boss (2); E, center squeezing be (3): be put into by the blank that jumping-up is good and mould squeeze out with bottom centre bore (6) (3).
3. electri forklift drive flange hollow external gear manufacturing process according to claim 1 and 2; it is characterized in that: described spheroidizing is, under nitrogen protection, vacuum state, blank heating is incubated 3 ~ 4 hours to 760 ~ 800 DEG C; be cooled to 670 ~ 720 DEG C of insulations 3 ~ 4 hours; cool to less than 350 DEG C with the furnace to come out of the stove, vacuum 0.06-0.07Mpa.
4. electri forklift drive flange hollow external gear manufacturing process according to claim 1, is characterized in that: described base be excision bottom (6) and car centre bore (3) with hollow circuit cylinder (5) cylindrical.
5., according to the electri forklift drive flange hollow external gear manufacturing process described in claim 1, it is characterized in that: the case-carbonizing thickness of described carburizing and quenching is 0.4 ~ 0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410663847.8A CN104589002A (en) | 2014-11-20 | 2014-11-20 | Manufacturing technology of hollow outer gear of electric forklift driving flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410663847.8A CN104589002A (en) | 2014-11-20 | 2014-11-20 | Manufacturing technology of hollow outer gear of electric forklift driving flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104589002A true CN104589002A (en) | 2015-05-06 |
Family
ID=53115240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410663847.8A CN104589002A (en) | 2014-11-20 | 2014-11-20 | Manufacturing technology of hollow outer gear of electric forklift driving flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104589002A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104858621A (en) * | 2015-05-20 | 2015-08-26 | 江苏太平洋精锻科技股份有限公司 | Input shaft sleeve precision forging method |
| CN104985413A (en) * | 2015-08-11 | 2015-10-21 | 重庆创精温锻成型有限公司 | Automobile gearbox P-gear gear manufacturing method |
| CN105127345A (en) * | 2015-09-30 | 2015-12-09 | 江苏威鹰机械有限公司 | Production method of saloon car transmission combination gear ring |
| CN105499941A (en) * | 2015-12-22 | 2016-04-20 | 江苏保捷锻压有限公司 | Forging and pressing technology and steel material for forged pieces of driven gears of main reducers of automobiles |
| CN106216972A (en) * | 2016-08-23 | 2016-12-14 | 浙江康灵电器有限公司 | Extrusion forming process of laughing somebody to scorn spent by a kind of isolator |
| CN106736323A (en) * | 2017-01-23 | 2017-05-31 | 江苏创汽车零部件有限公司 | A kind of warm forging forming technology of output flange axle |
| CN109366107A (en) * | 2018-11-28 | 2019-02-22 | 合肥常青机械股份有限公司 | A kind of hollow and thin-walled part Forming Quality control method |
| CN110202328A (en) * | 2019-04-24 | 2019-09-06 | 东风商用车有限公司 | A kind of heavy-load automobile gearbox planetary gear sun gear cold-extrusion technology |
-
2014
- 2014-11-20 CN CN201410663847.8A patent/CN104589002A/en not_active Application Discontinuation
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104858621A (en) * | 2015-05-20 | 2015-08-26 | 江苏太平洋精锻科技股份有限公司 | Input shaft sleeve precision forging method |
| CN104985413A (en) * | 2015-08-11 | 2015-10-21 | 重庆创精温锻成型有限公司 | Automobile gearbox P-gear gear manufacturing method |
| CN105127345A (en) * | 2015-09-30 | 2015-12-09 | 江苏威鹰机械有限公司 | Production method of saloon car transmission combination gear ring |
| CN105499941A (en) * | 2015-12-22 | 2016-04-20 | 江苏保捷锻压有限公司 | Forging and pressing technology and steel material for forged pieces of driven gears of main reducers of automobiles |
| CN106216972A (en) * | 2016-08-23 | 2016-12-14 | 浙江康灵电器有限公司 | Extrusion forming process of laughing somebody to scorn spent by a kind of isolator |
| CN106736323A (en) * | 2017-01-23 | 2017-05-31 | 江苏创汽车零部件有限公司 | A kind of warm forging forming technology of output flange axle |
| CN106736323B (en) * | 2017-01-23 | 2018-11-27 | 江苏创一精锻有限公司 | A kind of warm forging forming technology of output flange axis |
| CN109366107A (en) * | 2018-11-28 | 2019-02-22 | 合肥常青机械股份有限公司 | A kind of hollow and thin-walled part Forming Quality control method |
| CN110202328A (en) * | 2019-04-24 | 2019-09-06 | 东风商用车有限公司 | A kind of heavy-load automobile gearbox planetary gear sun gear cold-extrusion technology |
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Application publication date: 20150506 |