CN104999237A - Forging process for car spline shaft gear - Google Patents
Forging process for car spline shaft gear Download PDFInfo
- Publication number
- CN104999237A CN104999237A CN201410399717.8A CN201410399717A CN104999237A CN 104999237 A CN104999237 A CN 104999237A CN 201410399717 A CN201410399717 A CN 201410399717A CN 104999237 A CN104999237 A CN 104999237A
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- CN
- China
- Prior art keywords
- shaft gear
- temperature
- carried out
- castellated shaft
- forging technique
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
-
- 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
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Gears, Cams (AREA)
Abstract
The invention belongs to the technical field of car gear forging, and particularly discloses a forging process for a car spline shaft gear. The forging process includes the following steps: (1) blanking is carried out, wherein a medium frequency furnace is selected for heating; (2) machining and molding are carried out through a cold pressing mold; (3) quenching is carried out, wherein a quenching furnace is adopted for quenching treatment, the temperature ranges from 500 DEG C to 800 DEG C, tempering is carried out, and the tempering temperature ranges from 300 DEG C to 400 DEG C; (4) nylon coating is carried out; and (5) finish machining and detection are carried out. According to the forging process for the car spline shaft gear, the forging accuracy of the car spline shaft gear is high, the service life is long, and it is tested through a transmission shaft machine table that the service life is seven times that of a common transmission shaft; meanwhile, the excellent transmission performance, the excellent sliding performance and the excellent abrasion performance are achieved; during assembling work, running is stable, the noise is low, and the control flexibility is high; and the good economic benefit and the good social benefit can be created, and the application prospect is wide.
Description
Technical field
The present invention relates to automobile gear technical field of forging, be specifically related to a kind of automobile castellated shaft gear forging technique.
Background technology
Splined shaft is applied in aircraft, automobile, tractor, machine-tool industry and common mechanical transmission device usually, its complex structure, to rapidoprint, forging precision and subsequent fine processing etc. require higher.
At present, existing more ripe, mainly to be adopted rolling cut, milling, grinding by the automobile castellated shaft gear forging that most enterprises adopts, coldly to beat, the processing method of the plastic deformation such as cold rolling, its forging method invests low height, method is complicated, energy resource consumption is large, productivity ratio is lower, the availability producing material is also lower, often there is the problem that austenite crystal growth increases in material simultaneously in process, it directly affects the forging quality of spline shaft gear, and service life is short, use safety coefficient also reduces and Product Assembly is more loaded down with trivial details.
Therefore, based on the problems referred to above, the invention provides a kind of automobile castellated shaft gear forging technique.
Summary of the invention
Goal of the invention: the object of the invention is to provide a kind of automobile castellated shaft gear forging technique, ensure the precision of forging, and then increase service life, reduce the tooth milling machine fine finishining time simultaneously, improve production efficiency, to reach the object reducing entreprise cost and drop into.
Technical scheme: a kind of automobile castellated shaft gear forging technique, comprises the following steps,
Step 1, blanking, wherein select middle frequency furnace to heat.
Step 2, to be shaped by cold stamping die.
Step 3, quenching, employing glowing furnace carries out Quenching Treatment, temperature is 500 DEG C-800 DEG C, and temper, temperature are 300 DEG C-400 DEG C.
Step 4, nylon coated.
Step 5, fine finishining, detection.
In preferred described step 4, nylon coated comprises the following steps,
1) workpiece pretreatment, surface impurity cleaning, drying.
2) primer dipping and coating.
3) heat, apply PA11 granular pattern nylon powder, wherein heating-up temperature is 280 DEG C-380 DEG C.
4) first hot water cooling, then normal-temperature water cooling.
Digit Control Machine Tool is adopted to carry out processing and adopt acoustic systems to detect in preferred described step 5.
In further described step 1), workpiece pretreatment is inserted in heating furnace by gear blank and is carried out gasification ungrease treatment, in-furnace temperature control 500 DEG C-600 DEG C, the time is 30 minutes-60 minutes, remove blank surface grease and residue thereof, ensure coating attachment evenly.
Further described step 2) in primer dipping and coating namely spray 10 μm of-30 μm of priming paint at gear blank surface uniform, ensure the adhesive force of gear blank surface.
First by the preheating of gear blank in further described step 3), temperature is 280 DEG C-300 DEG C, then gear blank is placed in fluid bed, and wherein the time of immersing in fluidized state nylon powder is 1 hour-2 hours.
In further described step 4) adopt hot water chilling temperature 60 DEG C-90 DEG C, cool time is 20 minutes-40 minutes, finally takes out and is placed in air and naturally cools.
The gear blank surface nylon cover layer thickness that further described forging obtains is 260 μm-320 μm.
Compared with prior art, effective effect of the present invention is:
A kind of automobile castellated shaft gear forging technique of the present invention, spline shaft gear forging precision is high, and long service life is 7 times of common drive axle through the test of power transmission shaft board; Have excellent gearing, sliding and wearability, its smooth running during assembly work, noise are low and to control sensitivity high, can produce and create good economic benefit and social benefit, have a extensive future simultaneously.
Detailed description of the invention
A kind of automobile castellated shaft gear forging technique is provided to elaborate below in conjunction with specific embodiment to of the present invention:
Embodiment 1
A kind of automobile castellated shaft gear forging technique of the present invention, comprises the following steps,
Step 1, blanking, wherein select middle frequency furnace to heat.
Step 2, to be shaped by cold stamping die.
Step 3, quenching, employing glowing furnace carries out Quenching Treatment, temperature is 500 DEG C-800 DEG C, and temper, temperature are 300 DEG C-400 DEG C.
Step 4, nylon coated are divided into following steps, in step 1), workpiece pretreatment is inserted in heating furnace by gear blank and is carried out gasification ungrease treatment, in-furnace temperature control 500 DEG C-600 DEG C, the time is 30 minutes-60 minutes, remove blank surface grease and residue thereof, ensure coating attachment evenly.
Step 2) in primer dipping and coating namely spray 10 μm of-30 μm of priming paint at gear blank surface uniform, ensure the adhesive force of gear blank surface.
First by the preheating of gear blank in step 3), temperature is 280 DEG C-300 DEG C, then gear blank is placed in fluid bed, and wherein the time of immersing in fluidized state nylon powder is 1 hour-2 hours.
In step 4) adopt hot water chilling temperature 60 DEG C-90 DEG C, cool time is 20 minutes-40 minutes, finally takes out and is placed in air and naturally cools.
The gear blank surface nylon cover layer thickness that described forging obtains is 260 μm-320 μm.
Step 5, fine finishining, detection.
Digit Control Machine Tool is adopted to carry out processing and adopt acoustic systems to detect in preferred described step 5.
Embodiment 2
A kind of automobile castellated shaft gear forging technique of the present invention, comprises the following steps,
Step 1, blanking, wherein select middle frequency furnace to heat, heating-up temperature 1100 DEG C-1500 DEG C.
Step 2, to be shaped by cold stamping die.
Step 3, quenching, employing glowing furnace carries out Quenching Treatment, temperature is 650 DEG C-750 DEG C, and temper, temperature are 320 DEG C-360 DEG C.
Step 4, nylon coated are divided into following steps, in step 1), workpiece pretreatment is inserted in heating furnace by gear blank and is carried out gasification ungrease treatment, in-furnace temperature control 520 DEG C-550 DEG C, the time is 40 minutes-55 minutes, remove blank surface grease and residue thereof, ensure coating attachment evenly.
Step 2) in primer dipping and coating namely spray 15 μm of-20 μm of priming paint at gear blank surface uniform, ensure the adhesive force of gear blank surface.
First by the preheating of gear blank in step 3), temperature is 290 DEG C, then gear blank is placed in fluid bed, and wherein the time of immersing in fluidized state nylon powder is 1.5 hours.
In step 4) adopt hot water chilling temperature 70 DEG C-80 DEG C, cool time is 30 minutes, finally takes out and is placed in air and naturally cools.
The gear blank surface nylon cover layer thickness that described forging obtains is 270 μm-280 μm.
Step 5, fine finishining, detection.
Digit Control Machine Tool is adopted to carry out processing and adopt acoustic systems to detect in preferred described step 5.
Testing experiment: with existing spline shaft gear, wear test is carried out to 3 gears and 2 that this method is forged according to JB3741-84 truck drive shaft comprehensive assembly Bench test methods, 1, the datum level of spline shaft gear is contained on testing stand by test request, 2, first record test pre-test spline shaft gear thickness, standard charging-up lubricant oil when using according to assembling again, 3, first zero load is come across 5b, the rated load applying 18% is again tested, making average torque remain when 25Nm(wherein tests after loading makes the stroke of splined shaft be less than or equal to 12mm, splined shaft reciprocatingly slides average 40 beats/min of number of times, running-in speed is 615 revs/min, open and inspect every 150,000 times and once check splined surfaces abrasion condition, measure spline transverse tooth thickness wear extent and record result.
Result of the test: spline shaft gear smooth running in process of the test, noise are low and often take rear nylon spline tooth light for 150,000 times apart as before without plucking phenomenon, all nylon splined shaft flank of tooth are without damage, cracking, naked leakage metal phenomenon; Find in existing spline shaft gear running that noise is larger and every taking apart for 150,000 times finds that wearing and tearing are comparatively large, the flank of tooth has the problems such as the naked leakage of cracking; Final tool wear measures gets it right than showing that the service life of nylon spline shaft gear of the present invention is more than 7 times of existing spline shaft gear.
Wherein, the splined shaft with nylon coating applies in the splined shaft assembly of automobile steering transmission device, solve the problem that frictional force is large, noise is large of existing splined shaft and spline housing, avoid the automobile problem that in running at high speed or when road conditions are severe, direction and sensitivity is not high.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, and these improvement also should be considered as protection scope of the present invention.
Claims (8)
1. an automobile castellated shaft gear forging technique, is characterized in that: comprise the following steps,
Step 1, blanking, wherein select middle frequency furnace to heat;
Step 2, to be shaped by cold stamping die;
Step 3, quenching, employing glowing furnace carries out Quenching Treatment, temperature is 500 DEG C-800 DEG C, and temper, temperature are 300 DEG C-400 DEG C;
Step 4, nylon coated;
Step 5, fine finishining, detection.
2., according to a kind of automobile castellated shaft gear forging technique as claimed in claim 1, it is characterized in that: in described step 4, nylon coated comprises the following steps,
1) workpiece pretreatment, surface impurity cleaning, drying;
2) primer dipping and coating;
3) heat, apply PA11 granular pattern nylon powder, wherein heating-up temperature is 280 DEG C-380 DEG C;
4) first hot water cooling, then normal-temperature water cooling.
3. according to a kind of automobile castellated shaft gear forging technique as claimed in claim 1, it is characterized in that: in described step 5, adopt Digit Control Machine Tool to carry out processing and adopt acoustic systems to detect.
4. according to a kind of automobile castellated shaft gear forging technique as claimed in claim 3, it is characterized in that: in described step 1), workpiece pretreatment is inserted in heating furnace by gear blank and carried out gasification ungrease treatment, in-furnace temperature control 500 DEG C-600 DEG C, the time is 30 minutes-60 minutes, remove blank surface grease and residue thereof, ensure coating attachment evenly.
5., according to a kind of automobile castellated shaft gear forging technique as claimed in claim 3, it is characterized in that: described step 2) in primer dipping and coating namely spray 10 μm of-30 μm of priming paint at gear blank surface uniform, ensure the adhesive force of gear blank surface.
6. according to a kind of automobile castellated shaft gear forging technique as claimed in claim 3, it is characterized in that: first by the preheating of gear blank in described step 3), temperature is 280 DEG C-300 DEG C, again gear blank is placed in fluid bed, wherein the time of immersing in fluidized state nylon powder is 1 hour-2 hours.
7., according to a kind of automobile castellated shaft gear forging technique as claimed in claim 3, it is characterized in that: in described step 4) adopt hot water chilling temperature 60 DEG C-90 DEG C, cool time is 20 minutes-40 minutes, finally takes out and is placed in air and naturally cools.
8. according to a kind of automobile castellated shaft gear forging technique as claimed in claim 3, it is characterized in that: the gear blank surface nylon cover layer thickness that described forging obtains is 260 μm-320 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399717.8A CN104999237A (en) | 2014-08-14 | 2014-08-14 | Forging process for car spline shaft gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399717.8A CN104999237A (en) | 2014-08-14 | 2014-08-14 | Forging process for car spline shaft gear |
Publications (1)
| Publication Number | Publication Date |
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| CN104999237A true CN104999237A (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410399717.8A Pending CN104999237A (en) | 2014-08-14 | 2014-08-14 | Forging process for car spline shaft gear |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838854A (en) * | 2016-05-30 | 2016-08-10 | 方雪锋 | Heating quenching technology for spline shafts |
| CN107953114A (en) * | 2017-12-25 | 2018-04-24 | 重庆耐世特转向***有限公司 | Wheel steering system high density tooth jackshaft production line |
| CN107955875A (en) * | 2017-11-23 | 2018-04-24 | 江阴市永兴机械制造有限公司 | A kind of splined shaft heating quenching technique |
| CN109097723A (en) * | 2018-07-17 | 2018-12-28 | 安徽致精机电科技有限公司 | A kind of pack carburizing method of gear |
| CN113319523A (en) * | 2020-09-07 | 2021-08-31 | 湖北坚丰科技股份有限公司 | Rough machining process for small-diameter centering rectangular spline shaft of automobile |
| CN115338607A (en) * | 2022-08-17 | 2022-11-15 | 无锡市聚英机械制造有限公司 | Machining process of gear of coal mining machine |
| CN115654029A (en) * | 2022-10-31 | 2023-01-31 | 泰尔重工股份有限公司 | Universal coupling end face tooth and manufacturing method thereof and universal coupling |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS614797A (en) * | 1984-06-18 | 1986-01-10 | Sharp Corp | Driving gear |
| JPH07119810A (en) * | 1993-10-26 | 1995-05-12 | Aisin Seiki Co Ltd | Metallic gear wheel |
| US20040234702A1 (en) * | 1999-09-13 | 2004-11-25 | Koyo Seiko Co., Ltd. | Coated article, manufacturing method therefor and coating apparatus |
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| WO2008146794A1 (en) * | 2007-05-29 | 2008-12-04 | Ykk Corporation | Metal/resin composite article with sliding contact surface with mate member and process for producing the same |
| CN102716932A (en) * | 2010-12-10 | 2012-10-10 | 玉环普天单向器有限公司 | Mold for fabricating starting gear in gear-reduction starter |
| CN103437062A (en) * | 2013-08-30 | 2013-12-11 | 振石集团恒石纤维基业有限公司 | Synchronous cleaning device |
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2014
- 2014-08-14 CN CN201410399717.8A patent/CN104999237A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS614797A (en) * | 1984-06-18 | 1986-01-10 | Sharp Corp | Driving gear |
| JPH07119810A (en) * | 1993-10-26 | 1995-05-12 | Aisin Seiki Co Ltd | Metallic gear wheel |
| US20040234702A1 (en) * | 1999-09-13 | 2004-11-25 | Koyo Seiko Co., Ltd. | Coated article, manufacturing method therefor and coating apparatus |
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| WO2008146794A1 (en) * | 2007-05-29 | 2008-12-04 | Ykk Corporation | Metal/resin composite article with sliding contact surface with mate member and process for producing the same |
| CN102716932A (en) * | 2010-12-10 | 2012-10-10 | 玉环普天单向器有限公司 | Mold for fabricating starting gear in gear-reduction starter |
| CN103437062A (en) * | 2013-08-30 | 2013-12-11 | 振石集团恒石纤维基业有限公司 | Synchronous cleaning device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105838854A (en) * | 2016-05-30 | 2016-08-10 | 方雪锋 | Heating quenching technology for spline shafts |
| CN107955875A (en) * | 2017-11-23 | 2018-04-24 | 江阴市永兴机械制造有限公司 | A kind of splined shaft heating quenching technique |
| CN107953114A (en) * | 2017-12-25 | 2018-04-24 | 重庆耐世特转向***有限公司 | Wheel steering system high density tooth jackshaft production line |
| CN107953114B (en) * | 2017-12-25 | 2023-11-10 | 重庆耐世特转向***有限公司 | High-density tooth intermediate shaft production line of vehicle steering system |
| CN109097723A (en) * | 2018-07-17 | 2018-12-28 | 安徽致精机电科技有限公司 | A kind of pack carburizing method of gear |
| CN113319523A (en) * | 2020-09-07 | 2021-08-31 | 湖北坚丰科技股份有限公司 | Rough machining process for small-diameter centering rectangular spline shaft of automobile |
| CN115338607A (en) * | 2022-08-17 | 2022-11-15 | 无锡市聚英机械制造有限公司 | Machining process of gear of coal mining machine |
| CN115338607B (en) * | 2022-08-17 | 2023-12-12 | 无锡市聚英机械制造有限公司 | Processing technology of gear of coal mining machine |
| CN115654029A (en) * | 2022-10-31 | 2023-01-31 | 泰尔重工股份有限公司 | Universal coupling end face tooth and manufacturing method thereof and universal coupling |
| CN115654029B (en) * | 2022-10-31 | 2024-01-23 | 泰尔重工股份有限公司 | Universal coupling end face tooth, manufacturing method thereof and universal coupling |
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Application publication date: 20151028 |