CN103707020B - The processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case - Google Patents
The processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case Download PDFInfo
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- CN103707020B CN103707020B CN201310683104.2A CN201310683104A CN103707020B CN 103707020 B CN103707020 B CN 103707020B CN 201310683104 A CN201310683104 A CN 201310683104A CN 103707020 B CN103707020 B CN 103707020B
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- processing technology
- agricultural machinery
- transmission case
- equipment transmission
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
Abstract
The present invention relates to a kind of Gearmaking Technology.The processing technology of inside spline wheel gear used in Agricultural Machinery Equipment transmission case, comprises the following steps successively: selects materials, cutting machine blanking, blank forging, isothermal normalizing, coarse-fine car, draw internal spline, gear hobbing, shaving and heat treatment.The advantage of the processing technology of the inside spline wheel gear used in this Agricultural Machinery Equipment transmission case is that working (machining) efficiency is higher, processing cost is lower, improves product quality and the precision of inside spline wheel gear comprehensively.
Description
Technical field
The present invention relates to a kind of Gearmaking Technology, in a kind of Agricultural Machinery Equipment transmission case uses
The processing technology of spline gear.
Background technology
At present, in gear drive, inside spline wheel gear uses very universal, especially in tractor, harvester, rotary tillage
In the agricultural Agricultural Machinery Equipment transmission case such as machine.The precision of gear inner spline directly affects the accuracy of manufacture and the dress of gear
Join precision, thus affect the precision of whole transmission device.The internal spline used in Agricultural Machinery Equipment transmission case now
The processing technology of gear is as follows, is followed successively by blanking, forging, normalizing, rough turn, garland key, finish turning, gear hobbing
Or gear shaping, shaving and heat treatment, the quality of internal spline and the chemical composition of material, cutting stock weight, blank
Mode of heating, the aspect such as quality of normalizing have close relationship, defective, the cutting stock weight of material overproof,
Briquet stove heating mode produces that the many situations of oxide skin, normalizing hardness is uneven and rough turn and adopts between finish turning
There is the impact of workpiece deadweight by horizontal broaching machine broaching spline mode, all can reduce the manufacture essence of gear inner spline
Degree, the most rough turn, finish turning divides two procedures to process, too increases manufacturing cost, reduces working (machining) efficiency.
Gear surface carburized (case) depth uses the Technology for Heating Processing of shaft furnace processing, and gear surface carburized (case) depth is inadequate.
In sum, it is high to there is manufacturing cost in the processing of the inside spline wheel gear used in existing Agricultural Machinery Equipment transmission case,
Working (machining) efficiency is low, and the inside spline wheel gear quality machined and precision are low.
Summary of the invention
The mesh of the present invention is to solve the adding of inside spline wheel gear used in above-mentioned existing Agricultural Machinery Equipment transmission case
The deficiency that work technique exists, it is provided that a kind of new technology, improves working (machining) efficiency, reduces processing cost, improve
The inside spline wheel gear processing technology used in the Agricultural Machinery Equipment transmission case of inside spline wheel gear quality.
In order to realize foregoing invention purpose, present invention employs following technical scheme:
The processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case, comprises the following steps successively:
(1) select materials, select by mass percentage and there is the material of following chemical composition: 0.17%≤C≤0.23%；
0.17%≤Si≤0.37%；0.80%≤Mn≤1.10%；1.00%≤Cr≤1.30%；0.04%≤Ti≤
1.00%；Trace≤Ni≤0.03%；Trace≤S≤0.035%；Trace≤P≤0.035%, surplus is Fe
With inevitable impurity；
(2) cutting machine blanking, weight tolerance controls to be diameter d≤50, and tolerance is ± 0.01；Diameter 55
＜ d≤65, tolerance is+0.02～-0.01；Diameter d ＞ 65, tolerance be+0.03～
-0.01㎏；
(3) blank forging, raw material are placed in intermediate-frequency heating furnace heat time 5～10 seconds, temperature to 1000～
1200 DEG C, through jumping-up, forging, trimming, control the monolateral machining allowance of blank 0.8～1.2；
(4) isothermal normalizing, heats blank, and temperature is 925～945 DEG C, is incubated 2～3 hours；Then pass through
Rapid cooling, slow cooling, isothermal insulation, air cooling, control blank hardness 160～207HB, difference of hardness≤7HB；
(5) coarse-fine car, coarse-fine car endoporus on numerically controlled lathe, under end face one cutter, endoporus end face surface roughness
Reach Ra3.2, hole size tolerance+0.05, end face run-out≤0.015, thicker with Internal hole positioning
Finish turning other end and cylindrical, surface roughness reaches Ra3.2, end face run-out≤0.02, and cylindrical is jumped
Dynamic≤0.04；
(6) draw internal spline, use vertical broaching machine broaching, within end face location under hole end surface one cutter, and in addition
Circle floats and positions, and completes broaching with vertical broaching machine broaching tool, and surface roughness reaches Ra1.6, two ending pulsations
≤ 0.025, cylindrical beats≤0.06；
(7) gear hobbing, uses internal spline centering, and end face positions, and workpiece upper surface compresses, and carries out gear hobbing, gear ring
Footpath jumping≤0.03mm, tooth alignment error≤0.015mm, common normal variation≤0.025mm, surface roughness
Reach Ra3.2；
(8) shaving, uses internal spline centering, and end face positions, and parallel shaving carries out shave, gear ring circular runout
≤ 0.025mm, tooth alignment error≤0.011mm, common normal variation≤0.03mm, surface roughness reaches
Ra1.6；
(9) it is heat-treated, on multipurpose furnace, after mounting, carries out carburizing and quenching, gear surface carburized (case) depth
0.7-1.1mm, case hardness HRC58-63, centre hardness HRC33-48, metallographic structure 1-3 level.
As preferably, Fe is not less than 95% by mass percentage.
Have employed the processing technology of the inside spline wheel gear used in the Agricultural Machinery Equipment transmission case of technique scheme,
Successively use select materials, cutting machine blanking, blank forging, isothermal normalizing, coarse-fine car, draw internal spline, gear hobbing,
Shaving and the step of heat treatment, the inside spline wheel gear made end face run-out≤0.025mm, cylindrical beats≤
0.06mm, roughness reaches Ra1.6, and hardness is uniform, and difference of hardness≤7HB, monolateral surplus is at 0.8-1.2mm
Between, gear surface carburized (case) depth 0.7-1.1mm, case hardness HRC58-63, centre hardness HRC33-48,
Metallographic structure 1-3 level.The advantage of the processing technology of the inside spline wheel gear used in this Agricultural Machinery Equipment transmission case is
Working (machining) efficiency is higher, processing cost is lower, improves product quality and the precision of inside spline wheel gear comprehensively.
Detailed description of the invention
Embodiment 1
The processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case, comprises the following steps successively:
(1) select materials, select by mass percentage and there is the material of following chemical composition: C, 0.17%；Si, 0.17%；
Mn, 0.80%；Cr, 1.00%；Ti, 0.04%；Ni, 0.02%；S, 0.025%；P, 0.025%；
Surplus is Fe and inevitable impurity, and Fe is not less than 95%；
(2) cutting machine blanking, weight tolerance controls to be diameter d≤50, and tolerance is ± 0.01；Diameter 55
＜ d≤65, tolerance is+0.02～-0.01；Diameter d ＞ 65, tolerance is+0.03
～-0.01；
(3) blank forging, raw material are placed in intermediate-frequency heating furnace heat time 5～10 seconds, temperature to 1000～
1200 DEG C, through jumping-up, forging, trimming, control the monolateral machining allowance of blank 0.8～1.2；
(4) isothermal normalizing, heats blank, and temperature is 925～945 DEG C, is incubated 2～3 hours；Then pass through
Rapid cooling, slow cooling, isothermal insulation, air cooling, control blank hardness 160～207HB, difference of hardness≤7HB；
(5) coarse-fine car, coarse-fine car endoporus on numerically controlled lathe, under end face one cutter, endoporus end face surface roughness reaches
To Ra3.2, hole size tolerance+0.05, end face run-out≤0.015, thicker with Internal hole positioning
Finish turning other end and cylindrical, surface roughness reaches Ra3.2, end face run-out≤0.02, cylindrical
Beat≤0.04；
(6) draw internal spline, use vertical broaching machine broaching, within end face location under hole end surface one cutter, and with cylindrical
Floating and position, complete broaching with vertical broaching machine broaching tool, surface roughness reaches Ra1.6, two ending pulsations
≤ 0.025, cylindrical beats≤0.06；
(7) gear hobbing, uses internal spline centering, and end face positions, and workpiece upper surface compresses, and carries out gear hobbing, gear ring footpath
Jumping≤0.03mm, tooth alignment error≤0.015mm, common normal variation≤0.025mm, surface roughness
Reach Ra3.2；
(8) shaving, uses internal spline centering, and end face positions, and parallel shaving carries out shave, and gear ring circular runout≤
0.025mm, tooth alignment error≤0.011mm, common normal variation≤0.03mm, surface roughness reaches
Ra1.6；
(9) it is heat-treated, on multipurpose furnace, after mounting, carries out carburizing and quenching, gear surface carburized (case) depth
0.7-1.1mm, case hardness HRC58-63, centre hardness HRC33-48, metallographic structure 1-3 level.
Embodiment 2
The processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case, other is same as in Example 1,
Differ only in difference of selecting materials, select by mass percentage and there is the material of following chemical composition: C, 0.23%；
Si, 0.37%；Mn, 1.10%；Cr, 1.3%；Ti, 1%；Ni, 0.03%；S, 0.03%；P, 0.03%；
Surplus is Fe and inevitable impurity, and Fe is not less than 95%.
Embodiment 3
The processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case, other is same as in Example 1,
Differ only in difference of selecting materials, select by mass percentage and there is the material of following chemical composition: C, 0.2%；
Si, 0.3%；Mn, 1%；Cr, 1.1%；Ti, 0.6%；Ni, 0.02%；S, 0.02%；P, 0.02%；
Surplus is Fe and inevitable impurity, and Fe is not less than 95%.
Use the inside spline wheel gear used in the Agricultural Machinery Equipment transmission case that the technique of above-mentioned 3 embodiments makes and adopt
The performance data contrast table of the inside spline wheel gear used in the Agricultural Machinery Equipment transmission case made by existing technique is such as
Under.
As seen from the above table, use the coarse-fine car of this patent, draw internal spline, gear hobbing and shaving technique, at end face
Beat, cylindrical is beated and the precision of the aspect such as roughness is significantly better than using the existing technique of horizontal broaching, adopts
By blank forging and the isothermal normalizing technique of this patent, in sides such as forging stock quality, normalizing hardness and monolateral surpluses
Face is significantly better than employing briquet stove heating, afterheat normalizing, the rough turn and separate existing technique of finish turning.Use this specially
The Technology for Heating Processing of profit, significantly better than the heat treatment of existing shaft furnace processing in gear surface carburized (case) depth
Technique.Refer to that end face and endoporus complete turning at clamped one time under above-mentioned end face and endoporus one cutter, to ensure
End face run-out precision.
Using above-described embodiment to be only the better embodiment of this patent, selecting materials to select by mass percentage has
The material of following chemical composition, 0.17%≤C≤0.23%；0.17%≤Si≤0.37%；0.80%≤Mn
≤1.10%；1.00%≤Cr≤1.30%；0.04%≤Ti≤1.00%；Trace≤Ni≤0.03%；Trace≤S
≤0.035%；Trace≤P≤0.035%, surplus is Fe and inevitable impurity.
Claims (2)
1. the processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case, including selecting materials, by mass percentage
Select and there is the material of following chemical composition: 0.17%≤C≤0.23%；0.17%≤Si≤0.37%；0.80%
≤ Mn≤1.10%；1.00%≤Cr≤1.30%；0.04%≤Ti≤1.00%；Trace≤Ni≤0.03%；Trace
Amount≤S≤0.035%；Trace≤P≤0.035%, surplus is Fe and inevitable impurity；It is characterized in that
Processing technology comprises the following steps successively: (1) cutting machine blanking, and weight tolerance controls to be diameter d≤50,
Tolerance is ± 0.01；Diameter 55 ＜ d≤65, tolerance is+0.02～-0.01；Diameter d
＞ 65, tolerance is+0.03～-0.01；(2) raw material are placed on intermediate-frequency heating furnace by blank forging
Middle heat time 5～10 seconds, temperature to 1000～1200 DEG C, through jumping-up, forging, trimming, control blank
Monolateral machining allowance 0.8～1.2；(3) isothermal normalizing, heats blank, and temperature is 925～945 DEG C,
It is incubated 2～3 hours；Then by rapid cooling, slow cooling, isothermal be incubated, air cooling, control blank hardness 160～
207HB, difference of hardness≤7HB；(4) coarse-fine car, coarse-fine car endoporus on numerically controlled lathe, under end face one cutter,
Endoporus end face surface roughness reaches Ra3.2, hole size tolerance+0.05, end face run-out≤0.015,
Again with Internal hole positioning coarse-fine car other end and cylindrical, surface roughness reaches Ra3.2, end face run-out≤0.02
, cylindrical beats≤0.04；(5) draw internal spline, use vertical broaching machine broaching, within hole end surface one cutter
Under end face location, and with cylindrical float location, with vertical broaching machine broaching tool complete broaching, surface roughness reaches
To Ra1.6, two ending pulsation≤0.025, cylindrical beats≤0.06；(6) gear hobbing, uses internal spline fixed
The heart, end face positions, and workpiece upper surface compresses, and carries out gear hobbing, radial runout of gear ring≤0.03mm, tooth alignment error≤
0.015mm, common normal variation≤0.025mm, surface roughness reaches Ra3.2；(7) shaving, in using
Spline is felt relieved, and end face positions, and parallel shaving carries out shave, gear ring circular runout≤0.025mm, tooth alignment error
≤ 0.011mm, common normal variation≤0.03mm, surface roughness reaches Ra1.6；(8) it is heat-treated, hangs
On multipurpose furnace, carburizing and quenching, gear surface carburized (case) depth 0.7-1.1mm, case hardness is carried out after dress
HRC58-63, centre hardness HRC33-48, metallographic structure 1-3 level.
The processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case the most according to claim 1, its
It is characterised by that Fe is not less than 95% by mass percentage.
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| CN201310683104.2A CN103707020B (en) | 2013-12-12 | 2013-12-12 | The processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case |
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| CN201310683104.2A CN103707020B (en) | 2013-12-12 | 2013-12-12 | The processing technology of the inside spline wheel gear used in Agricultural Machinery Equipment transmission case |
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| CN103707020B true CN103707020B (en) | 2016-08-17 |
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| CN104551575A (en) * | 2014-12-30 | 2015-04-29 | 余鹏 | Mechanical part for rotating body |
| CN105855815A (en) * | 2016-05-27 | 2016-08-17 | 苏州威富达精密机械制造有限公司 | Machining technology of large gear for transmission of crane |
| CN105855816A (en) * | 2016-05-27 | 2016-08-17 | 苏州威富达精密机械制造有限公司 | Machining technology of large gear for transmission |
| CN106002118A (en) * | 2016-05-27 | 2016-10-12 | 苏州威富达精密机械制造有限公司 | Intermediate gear machining process |
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| CN106271479B (en) * | 2016-09-18 | 2018-04-06 | 安徽江淮汽车集团股份有限公司 | Involute gear internal spline processing method |
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| CN108189903A (en) * | 2017-11-28 | 2018-06-22 | 江阴市永兴机械制造有限公司 | A kind of opening internal spline and its manufacturing method |
| CN108747240A (en) * | 2018-08-06 | 2018-11-06 | 合肥银泉铸造有限责任公司 | A kind of car Gearmaking Technology |
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Effective date of registration: 20160622 Address after: 322200, No. 189, West Ring Road, Puyang Street, Pujiang County, Jinhua, Zhejiang Applicant after: Hong Xinyang Address before: No. 618 Pujiang County Hengchang 322200 Avenue in Jinhua city in Zhejiang Province Applicant before: Zhejiang Pujiang Gear Co., Ltd. |
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Effective date of registration: 20191227 Address after: 314200 Industrial Park, quantang Town, Pinghu City, Jiaxing City, Zhejiang Province Patentee after: Pinghu haiguang Machinery Co., Ltd Address before: 322200, No. 189, West Ring Road, Puyang Street, Pujiang County, Jinhua, Zhejiang Patentee before: Hong Xinyang |
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