CN1974054A - Slender stepped shaft machining process - Google Patents
Slender stepped shaft machining process Download PDFInfo
- Publication number
- CN1974054A CN1974054A CNA2006100707272A CN200610070727A CN1974054A CN 1974054 A CN1974054 A CN 1974054A CN A2006100707272 A CNA2006100707272 A CN A2006100707272A CN 200610070727 A CN200610070727 A CN 200610070727A CN 1974054 A CN1974054 A CN 1974054A
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- slender
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- moulding
- rolling machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- 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
- B21K1/06—Making machine elements axles or shafts
- B21K1/12—Making machine elements axles or shafts of specially-shaped cross-section
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention provides slender stepped shaft machining process. The technological process includes heating rod material in a medium frequency induction heating furnace to required temperature, and rolling in a wedge rolling machine to form the slender stepped shaft. For slender stepped shaft with flange, the integrally rolled shaft is further locally forged in a swinging rolling machine to form flange. The technological process combining heating in medium frequency induction heating furnace, rolling in a wedge rolling machine and local forging in a swinging rolling machine has low power consumption and high efficiency.
Description
Technical field
The present invention relates to a kind of axial workpiece manufacturing process, particularly be applicable to automobile with not with or the manufacturing process of flanged dish class semiaxis and many steps slender axles.
Background technology
Traditional many steps slender axles process is that " three fire " forges moulding, and the technological process brief introduction is as follows:
Referring to Fig. 1-1, Fig. 1-2, Fig. 1-3 and Fig. 1-4,
Fig. 1-1 is a raw material; Fig. 1-2 is the poly-material of spline segment; Fig. 1-3 flange section base; The moulding of Fig. 1-4 flange section.
1. raw material: select for use with thick moulded steel such as half shafts portion or continuous casting steel as raw material.
2. poly-material of spline segment and base: raw material one end, as the blank spline, through after the local heat to 1200 for the first time ℃, with friction press or the moulding of the poly-material of horizontal forging and upsetting machine, pier is slightly to the spline size.
3. flange section base: with friction press or the poly-material of horizontal forging and upsetting machine base, the heating raw materials other end (blank flange) is to 1200 ℃ for the second time after the secondary local heat, carries out first time of pier flange blank in advance.
4. flange section moulding: with the moulding of the poly-material of friction press or horizontal forging and upsetting machine, add pyrogen material flange blank to 1200 ℃ for the third time after three local heat, pier goes out ring flange.
From above-mentioned process as can be seen, because segmentation is heated and base and moulding to different parts, the temperature of workpiece different parts is in the sometimes hot and sometimes cold change procedure, the temperature of workpiece is unbalanced, make metallographic structure phase transformation disunity, can produce phenomenons such as shrinkage porosite, pore and micro-crack, the metal grain density is low and unbalanced.Cause the inherent quality, tensile strength, torsional fatigue life of workpiece, the quiet performance parameter such as intensity of turning round to descend.It is low also to exist the appearance and size precision, and stock utilization is low, and machining period waits not enough more.
How solving the deficiency of above-mentioned existence, then is the design problem that the present invention faced.
Summary of the invention
The invention provides a kind of manufacturing process of slender stepped shaft machining, problem such as it can solve the workpiece tissue that is caused because of the segmentation heating that prior art exists and have phenomenons such as shrinkage porosite, pore and micro-crack, and the metal grain density is low and unbalanced.
In order to reach the purpose that solves the problems of the technologies described above, technical scheme of the present invention is, a kind of manufacturing process of slender stepped shaft machining is characterized in that round bar with required specification after Medium Frequency Induction Heating Furnace integral body is heated to set point of temperature,
For the slender axles workpiece of flanged dish not, take out that to utilize cross wedge rolling machine that integral body is carried out at required rolling position rolling, i.e. moulding finishes;
For the slender axles workpiece of flanged dish, treat that cross wedge rolling machine carries out that integral body is rolling and finishes required rolling position after, promptly carry out the part and forge with rotary forging press, show ring flange.
In the present invention, also have following technical characterictic:
Slender axles workpiece for flanged dish, undertaken by following step:
1.. raw material: select for use appropriate size moulded steel or continuous casting steel as raw material, the intercepting suitable length;
2.. base: raw material is heated to 1120-1180 ℃ through Medium Frequency Induction Heating Furnace integral body, take out the back at cross wedge rolling machine to required rolling position roll forming;
3.. moulding: behind the cross wedge rolling base, utilize the surplus temperature of blank, directly on rotary forging press, show ring flange.1050 ℃ of left and right sides forging temperatures because the forging that cross wedge rolling machine is made is at a high speed still had an appointment are enough to satisfy pendulum and roll over temperature, need not add and vulcanize directly moulding on rotary forging press of temperature, have saved the energy, have improved efficient.
In the present invention, also have following technical characterictic, heat-treat after the moulding: utilize the logistics line that the hot blank of moulding is delivered into hardening and tempering furnace and heat-treat.
In the present invention, also have following technical characterictic, required rolling position comprises in bar portion, step, spline, the spline one or several.
The present invention compared with prior art has the following advantages and good effect: because raw material is through the whole heating of Medium Frequency Induction Heating Furnace, be heated evenly, utilize cross wedge rolling machine, rotary forging press forges, can make the position of respectively carrying of semiaxis all obtain simultaneously forging, and make thick dendritic crystalline substance in the original bar, column crystal and field trash fragmentation, crystal grain thinning, make shrinkage porosite, pore and micro-crack generation seam, improve the metal grain density, can also eliminate or improve dendritic segregation, thick compound in the crushing multiphase alloy improves the distribution of hardening constituent, it is extended along the metal flow direction, form streamlined " fibr tissue ", the forging temperature of workpiece is relatively low, and raw material microcosmic grain structure is fine and closely woven, compare traditional " three fire " Forging Technology, can significantly improve the inherent quality of workpiece, torsional fatigue life, the quiet intensity of turning round.The product precision: but edging part complexity coefficient S
4, forging beating degree＜1mm, machine-finish allowance can be controlled in the 0.5mm.
In addition, this process route production efficiency height for producing semiaxis, can reach and produce 300000 output per year, uses cross wedge rolling machine and rotary forging press, and no impact forging noise has improved production environment.The use of logistics line has alleviated working strength of workers greatly.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in detail.
Fig. 1-1, Fig. 1-2, Fig. 1-3 and Fig. 1-4 be flanged dish slender axles production procedure schematic diagram for the technology of prior art " three fire " forges;
1. raw material; 2. spline segment; 3. flange base; 4. flange;
Fig. 2-1, Fig. 2-2 and Fig. 2-3 make flanged dish slender axles production procedure schematic diagram for adopting technology of the present invention;
5. raw material; 6. spline segment; 7. ring flange base; 8. ring flange;
Fig. 3-1 and Fig. 3-2 is for adopting the not flanged dish slender stepped shaft machining of technology manufacturing of the present invention production procedure schematic diagram;
8 raw materials; 9 spline segments.
The specific embodiment
Referring to Fig. 3-1 and Fig. 3-2,
The first step is taken out the round bar 8 of certain specification after Medium Frequency Induction Heating Furnace integral body is heated to 1150 ℃ of temperature;
Second step, utilize cross wedge rolling machine that whole roll forming is carried out at required rolling position, be that moulding finishes for example to connecting not flanged dish class parts such as axle, camshaft, jackshaft.
Referring to Fig. 2-1, Fig. 2-2 and Fig. 2-3,
1. raw material: select for use big specification moulded steel or continuous casting steel as raw material, the intercepting suitable length.
2. base: raw material 5 is heated to about 1150 ℃ in the cross wedge rolling machine one-shot forming through Medium Frequency Induction Heating Furnace integral body, and the spline 6 of semiaxis, bar portion forge through aximal deformation value and finish simultaneously.The major diameter raw material once are heated to forging temperature, on cross wedge rolling machine through 20s once roll out slender axles everywhere step be that moulding is carried out pre-pier and prepared.
3. moulding: behind the cross wedge rolling base, flange blank 7 is directly shown ring flange 8 on rotary forging press.The forging of being made at a high speed by cross wedge rolling machine still has 1050 ℃ of left and right sides forging temperatures, is enough to satisfy pendulum and rolles over temperature, need not add and vulcanize directly moulding on rotary forging press of temperature.
4, heat treatment: utilize the logistics line with hot blank, about about 600 ℃, in time deliver into the step-by-step movement hardening and tempering furnace and heat-treat.Blank after the forging still has 600 ℃ of surplus temperature, is the modified preheating preparation of carrying out, and directly sends hardening and tempering furnace to by the logistics line and carries out modifier treatment.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (4)
1. the manufacturing process of a slender stepped shaft machining is characterized in that round bar with required specification after Medium Frequency Induction Heating Furnace integral body is heated to set point of temperature,
For the slender axles workpiece of flanged dish not, take out that to utilize cross wedge rolling machine that integral body is carried out at required rolling position rolling, i.e. moulding finishes;
For the slender axles workpiece of flanged dish, treat that cross wedge rolling machine carries out that integral body is rolling and finishes required rolling position after, promptly carry out the part and forge with rotary forging press, show ring flange.
2. technology according to claim 1 is characterized in that,
Slender axles workpiece for flanged dish, undertaken by following step:
1.. raw material: select for use appropriate size moulded steel or continuous casting steel as raw material, the intercepting suitable length;
2.. base: raw material is heated to 1120-1180 ℃ through Medium Frequency Induction Heating Furnace integral body, take out the back at cross wedge rolling machine to required rolling position roll forming;
3.. moulding: behind the cross wedge rolling base, utilize the surplus temperature of blank, directly on rotary forging press, show ring flange.
3. technology according to claim 1 and 2 is characterized in that, heat-treats after the moulding: utilize the logistics line that the hot blank of moulding is delivered into hardening and tempering furnace and heat-treat.
4. technology according to claim 3 is characterized in that, required rolling position comprises in bar portion, step, spline, the spline one or several.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100707272A CN1974054A (en) | 2006-12-08 | 2006-12-08 | Slender stepped shaft machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100707272A CN1974054A (en) | 2006-12-08 | 2006-12-08 | Slender stepped shaft machining process |
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| CN1974054A true CN1974054A (en) | 2007-06-06 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869909A (en) * | 2010-06-04 | 2010-10-27 | 湖北鑫强汽车零部件制造有限公司 | Machining technology for cross-wedge-rolling shaft blank |
| CN102000754A (en) * | 2010-09-26 | 2011-04-06 | 青特集团有限公司 | Manufacturing process of half shaft with flange plate |
| CN102052386A (en) * | 2010-12-21 | 2011-05-11 | 重庆巨泰机械有限公司 | Plum blossom-shaped half shaft and processing technique thereof |
| CN102099134A (en) * | 2008-07-16 | 2011-06-15 | 阿尔诺·弗里德里希斯 | Method and apparatus for producing a circular cylindrical body comprising a workable mass and having internal helical recesses |
| CN101737409B (en) * | 2008-11-04 | 2011-08-17 | 海城市德泰机械制造有限公司 | Production technology for heavy type super-long shaft |
| CN102689145A (en) * | 2012-06-06 | 2012-09-26 | 沈阳飞机工业（集团）有限公司 | Method for controlling numeric control machining deformation of slender and complicated T-shaped component |
| CN103568722A (en) * | 2012-08-07 | 2014-02-12 | 洪泽县汽车半轴制造有限公司 | Mini-bus half axle manufacturing process |
| EP2268430A4 (en) * | 2008-03-26 | 2015-04-15 | American Axle & Mfg Inc | Method of producing a stepped shaft |
| CN105081186A (en) * | 2015-07-23 | 2015-11-25 | 山东亨格尔制造股份有限公司 | Combined forging and forming process for input shaft of automotive automatic transmission |
| CN114574669A (en) * | 2022-02-16 | 2022-06-03 | 山东汇锋传动股份有限公司 | Through shaft and preparation method thereof |
-
2006
- 2006-12-08 CN CNA2006100707272A patent/CN1974054A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2268430A4 (en) * | 2008-03-26 | 2015-04-15 | American Axle & Mfg Inc | Method of producing a stepped shaft |
| CN102099134A (en) * | 2008-07-16 | 2011-06-15 | 阿尔诺·弗里德里希斯 | Method and apparatus for producing a circular cylindrical body comprising a workable mass and having internal helical recesses |
| CN102099134B (en) * | 2008-07-16 | 2013-05-22 | 阿尔诺·弗里德里希斯 | Method and apparatus for producing a circular cylindrical body comprising a workable mass and having internal helical recesses |
| CN101737409B (en) * | 2008-11-04 | 2011-08-17 | 海城市德泰机械制造有限公司 | Production technology for heavy type super-long shaft |
| CN101869909A (en) * | 2010-06-04 | 2010-10-27 | 湖北鑫强汽车零部件制造有限公司 | Machining technology for cross-wedge-rolling shaft blank |
| CN102000754A (en) * | 2010-09-26 | 2011-04-06 | 青特集团有限公司 | Manufacturing process of half shaft with flange plate |
| CN102052386A (en) * | 2010-12-21 | 2011-05-11 | 重庆巨泰机械有限公司 | Plum blossom-shaped half shaft and processing technique thereof |
| CN102689145A (en) * | 2012-06-06 | 2012-09-26 | 沈阳飞机工业（集团）有限公司 | Method for controlling numeric control machining deformation of slender and complicated T-shaped component |
| CN102689145B (en) * | 2012-06-06 | 2014-06-04 | 沈阳飞机工业（集团）有限公司 | Method for controlling numeric control machining deformation of slender and complicated T-shaped component |
| CN103568722A (en) * | 2012-08-07 | 2014-02-12 | 洪泽县汽车半轴制造有限公司 | Mini-bus half axle manufacturing process |
| CN105081186A (en) * | 2015-07-23 | 2015-11-25 | 山东亨格尔制造股份有限公司 | Combined forging and forming process for input shaft of automotive automatic transmission |
| CN114574669A (en) * | 2022-02-16 | 2022-06-03 | 山东汇锋传动股份有限公司 | Through shaft and preparation method thereof |
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