CN102921851A - Gear sleeve production method and gear sleeve production system - Google Patents
Gear sleeve production method and gear sleeve production system Download PDFInfo
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- CN102921851A CN102921851A CN2012104437850A CN201210443785A CN102921851A CN 102921851 A CN102921851 A CN 102921851A CN 2012104437850 A CN2012104437850 A CN 2012104437850A CN 201210443785 A CN201210443785 A CN 201210443785A CN 102921851 A CN102921851 A CN 102921851A
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Abstract
The invention relates to the field of machinery, in particular to a gear sleeve production method and a gear sleeve production system. The gear sleeve production method includes the following steps: heating a blank to 1210-1250 DEG C to obtain a first workblank; forging and pressing the first workblank to obtain a second workblank; forging and pressing the second workblank in a gear sleeve die to obtain a semi-finished product; quenching the semi-finished product; tempering the quenched semi-finished product to obtain a finished product. The gear sleeve production system comprises an intermediate-frequency heating furnace, an air hammer, the gear sleeve die, an oil press and a mesh belt furnace. Compare with the prior art, the blank is always in a solid state during the process of gear sleeve production, so that air cannot be dissolved, and the defects of the as-cast loose condition and air holes are overcome.
Description
Technical field
The present invention relates to mechanical field, be specifically related to production method and the system of tooth cover.
Background technology
The tooth cover is the consumable accessory of digging machine and forklift, be with bearing pin with its formation bucket tooth that is connected with tooth root on the scraper bowl of digging machine and forklift, bucket tooth is the vitals that shovels object.When bucket tooth lost efficacy, only need to change the tooth cover, can normally use.
The tooth cover major part that existing market produces all is by the forging type moulding, and casting is human a kind of metal fever processing technology of grasping relatively early, existing approximately history in 6000.China has reached quite high level about the heyday that B.C. 1700-has entered bronze casting between B.C. 1000 on the technique.The casting process of tooth cover is: the solid metallic blank is dissolved for meeting necessarily required liquid, then pour the tooth mold of given shape into, treat that it solidifies formation tooth cover.In this smelting process because liquid fluidity is larger, and can dissolve portion of air, thereby the tooth cover of producing contain as cast condition loose with the defective such as pore, have a strong impact on its service life.
Summary of the invention
Tooth cover production method provided by the invention and system can eliminate the as cast condition that produces in the tooth cover casting process and loosen and pore.
For achieving the above object, technical scheme of the present invention is achieved in that
Tooth cover production method comprises the following steps:
Step 1: blank heating to 1210-1250 ℃, is obtained the first blank;
Step 2: with described the first blank forging and pressing, obtain the second blank;
Step 3: described the second blank of forging and pressing in the tooth mold obtains semi-finished product;
Step 4: described semi-finished product are quenched;
Step 5: the semi-finished product tempering after will quenching obtains finished product.
Further, in the described step 1, with blank heating to 1230 ℃.
Further, in the described step 2, forging force is 500-600kg.
Further, in the described step 3, forging force is 900-1000kg.
Further, described quenching comprises: described semi-finished product are heated to 840-860 ℃, and behind the insulation 3-4h, oil cooling but.
Further, described tempering comprises: the semi-finished product after will quenching are heated to 360-400 ℃, behind the insulation Preset Time, and naturally cooling.
Further, described Preset Time is 3-4h.
The production system of tooth cover comprises: intermediate-frequency heating furnace, pneumatic hammer, tooth mold, hydraulic press and meshbeltfurnace;
Described intermediate-frequency heating furnace is used for: blank heating to 1210-1250 ℃, is obtained the first blank;
Described pneumatic hammer is used for: with described the first blank forging and pressing, obtain the second blank;
Described tooth mold is used for: at described the second blank of tooth mold forging and pressing, obtain semi-finished product;
Described hydraulic press is used for: at described the second blank of tooth mold forging and pressing, obtain semi-finished product;
Described meshbeltfurnace is used for:
Described semi-finished product are quenched;
Semi-finished product tempering with after quenching obtains finished product.
Further, described tooth mold comprises upper die and lower die; Described patrix and described counterdie are split type; Described patrix comprises upper bolster, top board and drift; Described counterdie comprises die shoe, inner die, die cavity and is used for interior fetal membrane is ejected the backform device of described die shoe;
Described top board is arranged on the lower end of described upper bolster; Described drift is embedded in the lower end of described upper bolster, and passes described top board, and described drift is in end portion and the described die cavity form fit of described top board; Described interior fetal membrane is arranged on the inside of described die shoe, and described interior fetal membrane is spliced by two identical mobilizable symmetry of module of shape; After described two module spliced are connected into interior fetal membrane, the described die cavity of inner formation; Described backform device is connected with the lower end of described die shoe;
Described hydraulic press is connected with the top of described upper bolster.
Further, described two modules are the prismatoid module.
Compared with prior art, to 1210-1250 ℃, the first blank that obtain this moment is still for solid-state, and easy moulding distortion with blank heating in the present invention; Forge and press again the first blank, obtain the second blank; In the tooth mold, forge and press the second blank at last, obtain semi-finished product, bore required hole is installed, then quenching, tempering obtain finished product.In this process, blank is solid state always, thereby can dissolved air, has eliminated the loose and gas hole defect of as cast condition.
In addition, technical scheme provided by the invention can also reach following beneficial effect:
(1) be out of shape and be recrystallized through metal in the blank of forging and pressing, the metal grain that obtains is thin, size evenly, thereby organize closelyr, the tooth that obtains overlaps good mechanical property, long service life.
(2) semi-finished product are quenched and heat, can eliminate forging stress, improve its cutting ability.
(3) the tooth mold adopts split-type design, and product stripping is more convenient.
(4) in addition, in the tooth mold, when the backform device ejects die shoe with interior fetal membrane, two active modules of interior fetal membrane will separate automatically, and the gained semi-finished product are automatic break away from moulds also, thereby the dismounting semi-finished product are more convenient.
Description of drawings
In order to be illustrated more clearly in the specific embodiment of the present invention, the below will do simple the introduction to the accompanying drawing of required use in the specific embodiment, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The tooth cover production method flow chart that Fig. 1 provides for the embodiment of the invention one.
The tooth mold structural representation that Fig. 2 provides for the embodiment of the invention one.
Reference numeral: 1-patrix, 101-top board, 102-drift, 103-upper bolster, 2-counterdie, 201-inner die, 202-die shoe, 203-backform device, 204-die cavity.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer; the below will carry out clear, complete description to technical scheme of the present invention; based on the specific embodiment among the present invention; those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, all belong to the scope that the present invention protects.
Embodiments of the invention one provide a kind of tooth cover production method, and as shown in Figure 1, the method comprises the following steps:
Step 101: blank heating to 1210-1250 ℃, is obtained the first blank;
Step 102: with described the first blank forging and pressing, obtain the second blank;
Step 103: described the second blank of forging and pressing in the tooth mold obtains semi-finished product;
Step 104: described semi-finished product are quenched;
Step 105: the semi-finished product tempering after will quenching obtains finished product.
Above-mentioned steps 101 can with blank heating to the arbitrary temp between 1210-1250, preferably, be selected 1230 ℃; In the step 102, preferably, the forging force that forges and presses the first blank is any weight between 500-600kg; In the step 103, preferably, the forging force that forges and presses the second blank is any weight between 900-1000kg; In the step 104, preferably, described semi-finished product are heated to 840-860 ℃, behind the insulation 3-4h, oil cooling is but finished quenching process.In the step 105, preferably, the semi-finished product after quenching are heated to 360-400 ℃, behind the insulation 3-4h, naturally cooling.
This embodiment also provides tooth cover production system, and this system comprises intermediate-frequency heating furnace, pneumatic hammer, tooth mold, hydraulic press and meshbeltfurnace;
Described intermediate-frequency heating furnace is used for: blank heating to 1210-1250 ℃, is obtained the first blank;
Described pneumatic hammer is used for: with described the first blank forging and pressing, obtain the second blank;
Described tooth mold is used for: at described the second blank of tooth mold forging and pressing, obtain semi-finished product;
Described hydraulic press is used for: at described the second blank of tooth mold forging and pressing, obtain semi-finished product;
Described meshbeltfurnace is used for:
Described semi-finished product are quenched;
Semi-finished product after quenching are heated to 360-400 ℃, and behind the insulation Preset Time, cooling obtains finished product.
Adopt above production method and system, can obtain the tooth cover of the defective such as the loose and pore of inorganization, mechanical performance also improves greatly:
To 1210-1250 ℃, the first blank that obtain this moment is still for solid-state, and easy moulding distortion with blank heating; Forge and press again the first blank, obtain the second blank; In the tooth mold, forge and press the second blank at last, obtain semi-finished product, bore required hole is installed, then quenching, tempering obtain finished product.In this process, blank is solid state always, thereby can dissolved air, has eliminated the loose and gas hole defect of as cast condition.
In addition, be out of shape and be recrystallized through metal in the blank of forging and pressing, the metal grain that obtains is thin, size evenly, thereby organize closelyr, the tooth that obtains overlaps good mechanical property, long service life, the tooth cover that makes with casting technique compares, experimental data is as follows:
The tooth cover for preparing same shape size:
1. cast the heavy 2.5kg of the tooth cover (foundry goods) that makes, the heavy 6.1kg of the tooth cover (forging) that the present embodiment makes;
2. be installed in simultaneously equally mechanically, carry out the same sandstone operation of digging, use and found afterwards in one day, the foundry goods working surface has obvious cut, dark approximately 3mm, and the bottom surface approximately 4mm that weares and teares, and forging surface no marking, approximately 1.5mm weares and teares in the bottom surface; Use the tooth cover working portion of foundry goods after 3 days entirely ineffective, forging still has the working portion of half.
Above data demonstration, the tooth cover density that the present embodiment makes is large, wear-resisting, and long service life illustrates further the tooth cover mechanical performance that adopts the method to make and is better than foundry goods.
In addition, the described tooth mold among this embodiment can also adopt following design:
As shown in Figure 2, tooth mold described in this system comprises patrix 1 and counterdie 2; Described patrix 1 and described counterdie 2 are split type; Described patrix 1 comprises upper bolster 103, top board 101 and drift 102; Described counterdie 2 comprises die shoe 202, inner die 201, die cavity 204 and is used for interior fetal membrane 201 is ejected the backform device 203 of described die shoe 1;
Described top board 101 is arranged on the lower end of described upper bolster 103; Described drift 102 is embedded in the lower end of described upper bolster 103, and passes described top board 101, and described drift is in end portion and described die cavity 204 form fit of 102 described top boards 101; Described interior fetal membrane 2021 is arranged on the inside of described die shoe 202, and described interior fetal membrane 201 is spliced by two identical mobilizable symmetry of prismatoid module of shape; After described two module spliced are connected into interior fetal membrane, the described die cavity 204 of inner formation; Described backform device 203 is connected with the lower end of described die shoe 202.
The above tooth mold is used for making half-finished process in step 103 as follows:
In the die cavity 204 of the inner die 201 of first described the second blank being packed into, produce the forging force of 1000kg by hydraulic press, when driving patrix 1 to undershoot, top board 101 drives from top to bottom hammering of drift 102, drift 102 inserts in the die cavity 204, makes the rough forge blank at die cavity 204 internal shapings, obtains semi-finished product; Then hydraulic press drives patrix 1 return, and namely mobile from bottom to top, drift 102 breaks away from counterdies 2 at this moment; Last backform device 203 ejects inner die 201 from die shoe 202, inner die 201 is at die shoe 202 outer two parts that automatically are divided at this moment, and this moment, semi-finished product therefrom broke away from, and entered next procedure.
This shows, adopt the tooth mold of this split-type design, stripping operation is simpler.
It should be noted that at last: above specific embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to aforementioned specific embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned embodiments is put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make essence disengaging each embodiment of the present invention of appropriate technical solution and the spirit and scope of specific embodiment technical scheme.
Claims (10)
1. tooth cover production method is characterized in that, comprises the following steps:
Step 1: blank heating to 1210-1250 ℃, is obtained the first blank;
Step 2: with described the first blank forging and pressing, obtain the second blank;
Step 3: described the second blank of forging and pressing in the tooth mold obtains semi-finished product;
Step 4: described semi-finished product are quenched;
Step 5: the semi-finished product tempering after will quenching obtains finished product.
2. tooth as claimed in claim 1 cover production method is characterized in that, in the described step 1, with blank heating to 1230 ℃.
3. tooth cover production method as claimed in claim 1 is characterized in that, in the described step 2, forging force is 500-600kg.
4. tooth cover production method as claimed in claim 1 is characterized in that, in the described step 3, forging force is 900-1000kg.
5. tooth cover production method as claimed in claim 1 is characterized in that, described quenching comprises: described semi-finished product are heated to 840-860 ℃, and behind the insulation 3-4h, oil cooling but.
6. tooth cover production method as claimed in claim 1 is characterized in that, described tempering comprises: the semi-finished product after will quenching are heated to 360-400 ℃, behind the insulation Preset Time, and naturally cooling.
7. tooth cover production method as claimed in claim 6 is characterized in that, described Preset Time is 3-4h.
8. the production system of tooth cover is characterized in that, comprising: intermediate-frequency heating furnace, pneumatic hammer, tooth mold, hydraulic press and meshbeltfurnace;
Described intermediate-frequency heating furnace is used for: blank heating to 1210-1250 ℃, is obtained the first blank;
Described pneumatic hammer is used for: with described the first blank forging and pressing, obtain the second blank;
Described tooth mold is used for: at described the second blank of tooth mold forging and pressing, obtain semi-finished product;
Described hydraulic press is used for: at described the second blank of tooth mold forging and pressing, obtain semi-finished product;
Described meshbeltfurnace is used for:
Described semi-finished product are quenched;
Semi-finished product tempering with after quenching obtains finished product.
9. tooth cover production system as claimed in claim 8 is characterized in that, described tooth mold comprises upper die and lower die; Described patrix and described counterdie are split type; Described patrix comprises upper bolster, top board and drift; Described counterdie comprises die shoe, inner die, die cavity and is used for interior fetal membrane is ejected the backform device of described die shoe;
Described top board is arranged on the lower end of described upper bolster; Described drift is embedded in the lower end of described upper bolster, and passes described top board, and described drift is in end portion and the described die cavity form fit of described top board; Described interior fetal membrane is arranged on the inside of described die shoe, and described interior fetal membrane is spliced by two identical mobilizable symmetry of module of shape; After described two module spliced are connected into interior fetal membrane, the described die cavity of inner formation; Described backform device is connected with the lower end of described die shoe;
Described hydraulic press is connected with the top of described upper bolster.
10. tooth cover production system as claimed in claim 9 is characterized in that, described two modules are trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104437850A CN102921851A (en) | 2012-11-08 | 2012-11-08 | Gear sleeve production method and gear sleeve production system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104437850A CN102921851A (en) | 2012-11-08 | 2012-11-08 | Gear sleeve production method and gear sleeve production system |
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| CN102921851A true CN102921851A (en) | 2013-02-13 |
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| CN2012104437850A Pending CN102921851A (en) | 2012-11-08 | 2012-11-08 | Gear sleeve production method and gear sleeve production system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086623A (en) * | 2016-07-13 | 2016-11-09 | 江苏东顺新能源科技有限公司 | A kind of die forging bucket tooth material and die forging bucket tooth processing technique |
| CN112475200A (en) * | 2020-10-26 | 2021-03-12 | 芜湖万联新能源汽车零部件有限公司 | Super-upsetting-ratio vertical forging process for motor shaft |
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| US5516376A (en) * | 1993-05-26 | 1996-05-14 | Nissan Motor Co., Ltd. | Method of, and apparatus for manufacturing a gear with a central through hole |
| US5718774A (en) * | 1995-07-27 | 1998-02-17 | Nissan Motor Co., Ltd. | Method of producing bevel gear |
| CN1364668A (en) * | 2001-01-10 | 2002-08-21 | 株式会社飯塚制作所 | Method for producing ring gear |
| JP2006224169A (en) * | 2005-02-18 | 2006-08-31 | Denso Corp | Method for manufacturing cylindrical body, and cylindrical body |
| CN1917970A (en) * | 2004-01-30 | 2007-02-21 | 巴米德勒·O·奥耶坎米 | Ring gear and manufacturing method for such a ring gear |
| CN101337259A (en) * | 2008-08-08 | 2009-01-07 | 武汉协和齿环有限公司 | Processing method of steel-base resin toothed-ring crude-forging |
| CN201239774Y (en) * | 2008-08-01 | 2009-05-20 | 上海东芙冷锻制造有限公司 | Closed forging die for cold-forging gear sleeve |
| CN101712062A (en) * | 2009-11-05 | 2010-05-26 | 郑州机械研究所 | Plastic precise forming process and device of internal bevel gear or spiral involute internal spline |
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2012
- 2012-11-08 CN CN2012104437850A patent/CN102921851A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5516376A (en) * | 1993-05-26 | 1996-05-14 | Nissan Motor Co., Ltd. | Method of, and apparatus for manufacturing a gear with a central through hole |
| US5718774A (en) * | 1995-07-27 | 1998-02-17 | Nissan Motor Co., Ltd. | Method of producing bevel gear |
| CN1364668A (en) * | 2001-01-10 | 2002-08-21 | 株式会社飯塚制作所 | Method for producing ring gear |
| CN1917970A (en) * | 2004-01-30 | 2007-02-21 | 巴米德勒·O·奥耶坎米 | Ring gear and manufacturing method for such a ring gear |
| JP2006224169A (en) * | 2005-02-18 | 2006-08-31 | Denso Corp | Method for manufacturing cylindrical body, and cylindrical body |
| CN201239774Y (en) * | 2008-08-01 | 2009-05-20 | 上海东芙冷锻制造有限公司 | Closed forging die for cold-forging gear sleeve |
| CN101337259A (en) * | 2008-08-08 | 2009-01-07 | 武汉协和齿环有限公司 | Processing method of steel-base resin toothed-ring crude-forging |
| CN101712062A (en) * | 2009-11-05 | 2010-05-26 | 郑州机械研究所 | Plastic precise forming process and device of internal bevel gear or spiral involute internal spline |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086623A (en) * | 2016-07-13 | 2016-11-09 | 江苏东顺新能源科技有限公司 | A kind of die forging bucket tooth material and die forging bucket tooth processing technique |
| CN112475200A (en) * | 2020-10-26 | 2021-03-12 | 芜湖万联新能源汽车零部件有限公司 | Super-upsetting-ratio vertical forging process for motor shaft |
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