CN103464982A - Machining process for fixed disks of synchronizers - Google Patents
Machining process for fixed disks of synchronizers Download PDFInfo
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- CN103464982A CN103464982A CN201310425526XA CN201310425526A CN103464982A CN 103464982 A CN103464982 A CN 103464982A CN 201310425526X A CN201310425526X A CN 201310425526XA CN 201310425526 A CN201310425526 A CN 201310425526A CN 103464982 A CN103464982 A CN 103464982A
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Abstract
The invention discloses a machining process for fixed disks of synchronizers, which includes the following steps: forging, normalization, rough turning, finish turning, rough plane grinding, gear shaping, carburization, pressure quenching, shot blasting, finish plane grinding so as to finally obtain finished products. The machining process for the fixed disks of the synchronizers, which is provided by the invention, can enhance not only the mechanical strength of the fixed disks of the synchronizers but also the wear resistance and planeness of the fixed disks of the synchronizers, thus prolonging the service lives of the fixed disks.
Description
Technical field
The present invention relates to a kind of processing technology of synchronized fixed disk.
Background technology
The automobile synchronizer fixed disk is one of important spare part in automobile variable speed mechanism, directly has influence on the service life of synchronized in its crudy, structure, service life etc.Mechanical strength, wearability and flatness, cause the assembling difficulty of fixed disk, therefore, needs a kind of processing technology of fixed disk, makes the product processed have stronger mechanical strength, wearability and flatness.
Summary of the invention
The invention provides a kind of processing technology of synchronized fixed disk, this technique can improve the mechanical strength of synchronized fixed disk, can improve wearability and flatness again, thereby extends its service life.
The present invention has adopted following technical scheme: a kind of processing technology of synchronized fixed disk comprises the following steps: step 1, forge, and select the low-carbon alloy Steel material, according to the pre-made allowance of drawing requirement, forging and molding; Step 2, normalizing, carry out normalized treatment to the product of forging and molding, and the refinement harmful structure is eliminated and is forged banded structure and the Wei Shi body formed; Step 3, rough turn, remove a large amount of surpluses, cylindrical, end face are carried out to preliminarily forming; Step 4, finish turning, be shaped cylindrical, hole, end face, seam according to the specification requirement finish turning; Step 5, the corase grind plane, first roughly ground two planes of fixed disk, guarantees parallelism of two planes; Step 6, gear shaping, by the internal tooth slotting moulding of fixed disk; Step 7, carburizing, adopt multipurpose furnace to carry out Carburization Treatment; Step 8, pressure is quenched, and adopts dress with pressing the mould of quenching fully to guarantee the flatness of fixed disk; Step 9, ball blast, the workpiece that pressure has been quenched carries out ball blast, and surperficial non-martensite is removed in clean surface; Step 10, finished plane, adopt three method flat surface grindings of mill, at first first roughly grinds a plane, another plane of regrinding after light goes out, after fine grinding puts in place, then fine grinding that plane of corase grind at first that reverses, finally obtain finished product.
Adopt 915 ℃ of-925 ℃ of high temperature normalizings in described step 2 normalizing process; In the rough turn process of described step 3, the monolateral reserved allowance of product is 0.75-1mm, and roughness is Ra6.3; The product surface roughness that in described step 4 finish turning process, finish turning is shaped is Ra1.6; Adopt nitrogen methanol atmospheres in described step 7 carburizing process, the acetone enriched gas carries out Carburization Treatment, and cooling employing apical ring is cooling.
The present invention has following beneficial effect: the processing technology of synchronized fixed disk provided by the invention, increased the corase grind plane and improved the method for the mill of finished plane on existing conventional machining process, mechanical strength, wearability and the flatness of the fixed disk that processes are all increased.
The specific embodiment
The processing technology that the present invention is a kind of synchronized fixed disk comprises the following steps: step 1, forge, and select the low-carbon alloy Steel material, according to the pre-made allowance of drawing requirement, forging and molding; Step 2, normalizing, carry out normalized treatment to the product of forging and molding, and the refinement harmful structure is eliminated and is forged banded structure and the Wei Shi body formed, and adopts 915 ℃ of-925 ℃ of high temperature normalizings in the normalizing process; Step 3, rough turn, remove a large amount of surpluses, cylindrical, end face are carried out to preliminarily forming, in rough turn process, the monolateral reserved allowance of product is 0.75-1mm, roughness is Ra6.3; Step 4, finish turning, be shaped cylindrical, hole, end face, seam according to the specification requirement finish turning, and the product surface roughness that in the finish turning process, finish turning is shaped is Ra1.6; Step 5, the corase grind plane, first roughly ground two planes of fixed disk, guarantees parallelism of two planes, and the depth of parallelism all is less than 0.06mm; Step 6, gear shaping, by the internal tooth slotting moulding of fixed disk; Step 7, carburizing, adopt multipurpose furnace to carry out Carburization Treatment, adopts nitrogen methanol atmospheres in carburizing process, and the acetone enriched gas carries out Carburization Treatment, and cooling employing apical ring is cooling; Step 8, pressure is quenched, and adopts dress with pressing the mould of quenching fully to guarantee the flatness of fixed disk; Step 9, ball blast, the workpiece that pressure has been quenched carries out ball blast, and surperficial non-martensite is removed in clean surface; Step 10, finished plane, adopt three method flat surface grindings of mill, at first first roughly grinds a plane, another plane of regrinding after light goes out, after fine grinding puts in place, then fine grinding that plane of corase grind at first that reverses, finally obtain finished product.
Claims (5)
1. the processing technology of a synchronized fixed disk is characterized in that comprising the following steps:
Step 1, forge, and selects the low-carbon alloy Steel material, according to the pre-made allowance of drawing requirement, forging and molding;
Step 2, normalizing, carry out normalized treatment to the product of forging and molding, and the refinement harmful structure is eliminated and is forged banded structure and the Wei Shi body formed;
Step 3, rough turn, remove a large amount of surpluses, cylindrical, end face are carried out to preliminarily forming;
Step 4, finish turning, be shaped cylindrical, hole, end face, seam according to the specification requirement finish turning;
Step 5, the corase grind plane, first roughly ground two planes of fixed disk, guarantees parallelism of two planes;
Step 6, gear shaping, by the internal tooth slotting moulding of fixed disk;
Step 7, carburizing, adopt multipurpose furnace to carry out Carburization Treatment;
Step 8, pressure is quenched, and adopts dress with pressing the mould of quenching fully to guarantee the flatness of fixed disk;
Step 9, ball blast, the workpiece that pressure has been quenched carries out ball blast, and surperficial non-martensite is removed in clean surface;
Step 10, finished plane, adopt three method flat surface grindings of mill, at first first roughly grinds a plane, another plane of regrinding after light goes out, after fine grinding puts in place, then fine grinding that plane of corase grind at first that reverses, finally obtain finished product.
2. the processing technology of a kind of synchronized fixed disk according to claim 1, is characterized in that in described step 2 normalizing process adopting 915 ℃ of-925 ℃ of high temperature normalizings.
3. the processing technology of a kind of synchronized fixed disk according to claim 1, the monolateral reserved allowance that it is characterized in that product in the rough turn process of described step 3 is 0.75-1mm, roughness is Ra6.3.
4. the processing technology of a kind of synchronized fixed disk according to claim 1, is characterized in that the product surface roughness that in described step 4 finish turning process, finish turning is shaped is Ra1.6.
5. the processing technology of a kind of synchronized fixed disk according to claim 1, is characterized in that adopting nitrogen methanol atmospheres in described step 7 carburizing process, and the acetone enriched gas carries out Carburization Treatment, and cooling employing apical ring is cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310425526XA CN103464982A (en) | 2013-09-18 | 2013-09-18 | Machining process for fixed disks of synchronizers |
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| CN201310425526XA CN103464982A (en) | 2013-09-18 | 2013-09-18 | Machining process for fixed disks of synchronizers |
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| CN103464982A true CN103464982A (en) | 2013-12-25 |
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| CN201310425526XA Pending CN103464982A (en) | 2013-09-18 | 2013-09-18 | Machining process for fixed disks of synchronizers |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611666A (en) * | 2015-01-14 | 2015-05-13 | 福建乾达重型机械有限公司 | Hot carburizing method for carburizing parts |
| CN106825775A (en) * | 2017-01-19 | 2017-06-13 | 重庆大学 | Few teeth difference precise planetary reducer interior bracing technique |
| CN109027035A (en) * | 2018-08-22 | 2018-12-18 | 石狮真发齿轮有限公司 | A kind of lorry synchronizer assembly and its processing technology |
| CN110303305A (en) * | 2019-07-23 | 2019-10-08 | 重庆申耀机械工业有限责任公司 | A kind of processing technology of outer ring |
| CN110757254A (en) * | 2018-07-25 | 2020-02-07 | 中国石油化工股份有限公司 | Method for rapidly improving hydrogen embrittlement resistance of austenitic steel |
| CN111015135A (en) * | 2019-08-31 | 2020-04-17 | 重庆铁马工业集团有限公司 | High-precision cross shaft machining process |
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| EP0798145A1 (en) * | 1996-03-29 | 1997-10-01 | MC Micro Compact Car Aktiengesellschaft | Change wheel gear for a vehicle |
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| CN102225509A (en) * | 2011-05-04 | 2011-10-26 | 天津天海同步科技股份有限公司 | Application of surface finishing technique for processing synchronizer gear hub |
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| EP0798145A1 (en) * | 1996-03-29 | 1997-10-01 | MC Micro Compact Car Aktiengesellschaft | Change wheel gear for a vehicle |
| CN2312367Y (en) * | 1997-11-26 | 1999-03-31 | 中国重型汽车集团公司济南齿轮厂 | Heavy duty automobile gear-case having synchronisation means |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611666A (en) * | 2015-01-14 | 2015-05-13 | 福建乾达重型机械有限公司 | Hot carburizing method for carburizing parts |
| CN106825775A (en) * | 2017-01-19 | 2017-06-13 | 重庆大学 | Few teeth difference precise planetary reducer interior bracing technique |
| CN110757254A (en) * | 2018-07-25 | 2020-02-07 | 中国石油化工股份有限公司 | Method for rapidly improving hydrogen embrittlement resistance of austenitic steel |
| CN110757254B (en) * | 2018-07-25 | 2021-07-09 | 中国石油化工股份有限公司 | Method for rapidly improving hydrogen embrittlement resistance of austenitic steel |
| CN109027035A (en) * | 2018-08-22 | 2018-12-18 | 石狮真发齿轮有限公司 | A kind of lorry synchronizer assembly and its processing technology |
| CN110303305A (en) * | 2019-07-23 | 2019-10-08 | 重庆申耀机械工业有限责任公司 | A kind of processing technology of outer ring |
| CN110303305B (en) * | 2019-07-23 | 2022-03-15 | 重庆申耀机械工业有限责任公司 | Processing technique of outer ring |
| CN111015135A (en) * | 2019-08-31 | 2020-04-17 | 重庆铁马工业集团有限公司 | High-precision cross shaft machining process |
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