CN113118719A - Carbon steel duplicate gear processing technology and paper shredder applying same - Google Patents
Carbon steel duplicate gear processing technology and paper shredder applying same Download PDFInfo
- Publication number
- CN113118719A CN113118719A CN201911406980.4A CN201911406980A CN113118719A CN 113118719 A CN113118719 A CN 113118719A CN 201911406980 A CN201911406980 A CN 201911406980A CN 113118719 A CN113118719 A CN 113118719A
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- gear
- blank
- tooth
- paper shredder
- processing
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- 229910000975 Carbon steel Inorganic materials 0.000 title claims abstract description 15
- 239000010962 carbon steel Substances 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 238000005242 forging Methods 0.000 claims abstract description 24
- 230000009977 dual effect Effects 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000003754 machining Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 claims description 7
- 238000000137 annealing Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 238000007514 turning Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 238000004663 powder metallurgy Methods 0.000 abstract description 7
- 238000001746 injection moulding Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/24—Drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
Abstract
The invention discloses a carbon steel duplicate gear processing technology and a paper shredder applying the same, and belongs to the technical field of gear processing. Aiming at the problem that the integral dual gear formed by powder metallurgy or injection molding is low in strength, small teeth and large teeth of the dual gear are respectively formed by the gear process machining mode of the invention, and round corners are directly formed by forging and pressing at the corners of the dual gear. The paper shredder adopts a structure transmission mode of the dual gears, so that the paper shredder has higher transmission efficiency, better stability and higher strength compared with the transmission mode of the single gear. The paper shredder is simpler to mount, and the volume of the transmission part can be effectively reduced.
Description
Technical Field
The invention belongs to the technical field of gear machining, and particularly relates to a carbon steel duplicate gear machining process.
Background
The existing dual gears have two common structural forms: one is integral, the gear is integrally processed by a gear blank; the other type is split type, the big gear and the small gear with double teeth are respectively processed by two or 4 tooth blanks, and then the big gear and the small gear are assembled by a thermal expansion method, an extrusion method, riveting and series connection, and the precision and the strength are all deficient after the big gear and the small gear are connected. The existing integral gear is generally formed by powder metallurgy or injection molding, and then the two types of gears have low strength and cannot be applied to high-strength use environments. In addition, the existing duplex gear for the paper shredder has low transmission precision and high installation cost, and most of the duplex gears adopt a split type transmission mode of 2 or 4 pieces combination, so that the transmission mode has low stability and low gear strength.
Disclosure of Invention
Aiming at the problem of low strength of the integral double gear formed by powder metallurgy or injection molding in the background technology, the invention aims to provide a processing technology of a carbon steel double gear.
Therefore, the invention adopts the following technical scheme:
a processing technology of a carbon steel duplicate gear is characterized by comprising the following steps:
selecting a round bar as a gear blank for machining the gear of the duplex gear;
step two, pressing the round rod into a convex shape through hot forging;
step three, spheroidizing annealing treatment is carried out on the gear blank after hot forging;
extruding the convex part of the gear blank to form a small tooth, reversely forming the small tooth on the other end surface of the gear blank in the shape of the Chinese character 'tu', and forming a fillet on the upper end surface of the small tooth and the joint of the small tooth and the large tooth;
fifthly, processing an inner hole and forging and pressing a big tooth on the gear blank to form an axial inner hole and a big tooth on the gear blank;
sixthly, carrying out heat treatment quenching treatment on the gear blank;
and step seven, finally, processing two end faces of the gear blank to finish the preparation of the duplicate gear.
In addition to the above technical solutions, the present invention also includes the following technical features.
And fifthly, forming a fillet by forging the large tooth to form the edge of the outer end surface or the inner end surface of the large tooth profile.
And processing the two end surfaces of the gear blank by turning or grinding.
A processing technology of a carbon steel duplicate gear is characterized by comprising the following steps:
selecting a round bar as a gear blank for machining the gear of the duplex gear;
step two, pressing the round bar into a convex shape through hot forging, wherein the convex part of the gear blank is a conical or cylindrical convex;
step three, spheroidizing annealing treatment is carried out on the gear blank after hot forging;
extruding the raised part to make the small teeth raised reversely on the end surface of the large tooth blank;
fifthly, processing an inner hole and forging and pressing a big tooth on the gear blank to form an axial inner hole and a big tooth on the gear blank;
sixthly, carrying out heat treatment quenching treatment on the gear blank;
and step seven, finally, processing two end faces of the gear blank to finish the preparation of the duplicate gear.
In addition to the above technical solutions, the present invention also includes the following technical features.
And fifthly, forming a fillet by forging the large tooth to form the edge of the outer end surface or the inner end surface of the large tooth profile.
And processing the two end surfaces of the gear blank by turning or grinding.
A metallographic structure at a transition position of a large tooth blank and a raised small gear of the duplicate gear is in a metal flowing line shape which is regularly distributed, and round corners are formed at the edge of the small tooth of the duplicate gear, the transition position and the outer edge of one plane of the large gear.
The utility model provides an use dual gear's kneader, includes the kneader casing, the inside shredded paper chamber that is used for installing two sets of shredded paper cutter stick that forms of kneader casing, the both ends of two shredded paper cutter sticks all pass through the kneader casing support the installation, wherein one end of two shredded paper cutter sticks is worn out the kneader casing, wherein be connected with a shredded paper cutter stick and first gear, another shredded paper cutter stick is connected dual gear, dual gear's little tooth with first gear cooperate, dual gear's big tooth cooperatees with actuating mechanism's second gear.
The invention can achieve the following beneficial effects: 1. compared with the traditional process for manufacturing the dual gear by powder metallurgy, the process has high strength and ingenious preparation process, and solves the problem of preparing the integral dual gear by carbon steel materials. 2. The paper shredder adopts a structure transmission mode of the dual gears, so that the paper shredder has higher transmission efficiency, better stability and higher strength compared with the transmission mode of the single gear. The paper shredder is simpler to mount, and the volume of the transmission part can be effectively reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the double gear of the present invention.
Fig. 2a and 2b are schematic metallographic structures of a duplicate gear according to the present invention.
Fig. 3a and 3b are schematic metallographic structure diagrams of a duplicate gear of the prior powder metallurgy process.
Fig. 4a and 4b are schematic diagrams of the metallographic structure of the gear formed by the existing hot forging process.
FIG. 5 is a schematic diagram of the shredder of the present invention.
Detailed Description
The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings.
The invention relates to a processing technology of a carbon steel duplicate gear, which comprises the following steps:
selecting a round bar as a gear blank for machining the gear of the duplex gear;
step two, pressing the round rod into a convex shape through hot forging;
step three, spheroidizing annealing treatment is carried out on the gear blank after hot forging;
extruding the convex part of the gear blank to form a small tooth, reversely forming the small tooth on the other end surface of the gear blank in the shape of the Chinese character 'tu', and forming a fillet on the upper end surface of the small tooth and the joint of the small tooth and the large tooth;
fifthly, processing an inner hole and forging and pressing a big tooth on the gear blank to form an axial inner hole and a big tooth on the gear blank, and forming a big tooth profile and a fillet with the edge of one plane through forging and pressing the big tooth;
sixthly, carrying out heat treatment quenching treatment on the gear blank;
and step seven, machining the two end faces of the gear blank by turning or grinding to finish the preparation of the dual gear.
In the process, the step six and the step seven can be processed in a replaceable way.
The structure of the duplex gear 1 prepared by the process is shown in fig. 1, and the gear outer edge part 11 of the duplex gear is formed into a round angle. The metallographic structure at the transition of the large gear and the small gear is in the shape of metal flow lines which are regularly distributed, as shown in fig. 2a and 2 b. Whereas duplicate gears produced by powder metallurgy are irregularly granular, as shown in fig. 3a and 3 b; the duplicate gears prepared by hot forging were irregularly flocculent in distribution as shown in fig. 4a and 4 b. The structure of three groups of metallographic structures can be analyzed, and the duplex gear prepared by the powder metallurgy and hot forging process has low strength compared with the preparation process.
As shown in figure 5, a paper shredder comprises a paper shredder casing 2, a paper shredding cavity for installing two groups of paper shredding cutter bars 3 is formed inside the paper shredder casing 2, two ends of the two groups of paper shredding cutter bars 3 are both supported and installed by the paper shredder casing, one end of each of the two paper shredding cutter bars penetrates out of the paper shredder casing, a first gear 4 is connected with one paper shredding cutter bar, the other paper shredding cutter bar is connected with a duplicate gear, the small teeth of the duplicate gear 1 are matched with the first gear 4, and the large teeth of the duplicate gear are matched with a second gear 5 of a driving mechanism
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A processing technology of a carbon steel duplicate gear is characterized by comprising the following steps:
selecting a round bar as a gear blank for machining the gear of the duplex gear;
step two, pressing the round rod into a convex shape through hot forging;
step three, spheroidizing annealing treatment is carried out on the gear blank after hot forging;
extruding the convex part of the gear blank to form a small tooth, reversely forming the small tooth on the other end surface of the gear blank in the shape of the Chinese character 'tu', and forming a fillet on the upper end surface of the small tooth and the joint of the small tooth and the large tooth;
fifthly, processing an inner hole and forging and pressing a big tooth on the gear blank to form an axial inner hole and a big tooth on the gear blank;
sixthly, carrying out heat treatment quenching treatment on the gear blank;
and step seven, finally, processing two end faces of the gear blank to finish the preparation of the duplicate gear.
2. A carbon steel duplicate gear processing technique according to claim 1, characterized in that: and fifthly, forming a fillet by forging the large tooth to form the edge of the outer end surface or the inner end surface of the large tooth profile.
3. A carbon steel duplicate gear processing technique according to claim 1, characterized in that: and processing the two end surfaces of the gear blank by turning or grinding.
4. A processing technology of a carbon steel duplicate gear is characterized by comprising the following steps:
selecting a round bar as a gear blank for machining the gear of the duplex gear;
step two, pressing the round rod into a convex shape through hot forging;
step three, spheroidizing annealing treatment is carried out on the gear blank after hot forging;
extruding the raised part to make the small teeth raised reversely on the end surface of the large tooth blank;
fifthly, processing an inner hole and forging and pressing a big tooth on the gear blank to form an axial inner hole and a big tooth on the gear blank;
sixthly, carrying out heat treatment quenching treatment on the gear blank;
and step seven, finally, processing two end faces of the gear blank to finish the preparation of the duplicate gear.
5. A carbon steel duplicate gear processing technology according to claim 4, characterized in that: the edges of the outer end surface or the inner end surface of the large-tooth profile formed by forging and pressing the large teeth form fillets.
6. A carbon steel duplicate gear processing technology according to claim 4, characterized in that: and processing the two end surfaces of the gear blank by turning or grinding.
7. A dual gear manufactured by the process of claim 1, 2, 3, 4, 5 or 6, wherein: the metallographic structure at the transition position of the large gear blank and the raised small gear of the duplicate gear is in a metal flowing line shape which is regularly distributed, and round corners are formed at the edge of the small gear of the duplicate gear, the transition position and the outer edge of one plane of the large gear.
8. A paper shredder using the dual gear of claim 7, which comprises a paper shredder housing, wherein a paper shredding chamber for installing two groups of paper shredding cutter bars is formed inside the paper shredder housing, two ends of the two paper shredding cutter bars are supported and installed by the paper shredder housing, one end of each paper shredding cutter bar penetrates out of the paper shredder housing, and a first gear is connected with one paper shredding cutter bar, and the paper shredder is characterized in that: the other paper shredding knife rod is connected with the duplicate gear, the small teeth of the duplicate gear are matched with the first gear, and the large teeth of the duplicate gear are matched with the second gear of the driving mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406980.4A CN113118719A (en) | 2019-12-31 | 2019-12-31 | Carbon steel duplicate gear processing technology and paper shredder applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406980.4A CN113118719A (en) | 2019-12-31 | 2019-12-31 | Carbon steel duplicate gear processing technology and paper shredder applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113118719A true CN113118719A (en) | 2021-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911406980.4A Pending CN113118719A (en) | 2019-12-31 | 2019-12-31 | Carbon steel duplicate gear processing technology and paper shredder applying same |
Country Status (1)
| Country | Link |
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| CN (1) | CN113118719A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201632308U (en) * | 2009-12-31 | 2010-11-17 | 林清标 | Paper cleaning mechanism of shredder |
| CN202146808U (en) * | 2011-06-14 | 2012-02-22 | 茂新五金制品（深圳）有限公司 | Transmission mechanism of high-efficiency paper shredder |
| CN203329767U (en) * | 2013-05-09 | 2013-12-11 | 广州科密股份有限公司 | Transmission mechanism of paper shredder and gear combination of paper shredder |
| CN104589002A (en) * | 2014-11-20 | 2015-05-06 | 江苏威鹰机械有限公司 | Manufacturing technology of hollow outer gear of electric forklift driving flange |
| CN107186158A (en) * | 2017-06-09 | 2017-09-22 | 上海交通大学 | Duplicate gear forging technology and mould based on plate bulk forming |
| CN110026514A (en) * | 2019-03-19 | 2019-07-19 | 洛阳福瑞可汽车零部件有限公司 | A kind of active triple gear cone tooth shapes the process of closed-die forging with end tooth only simultaneously |
| CN110216429A (en) * | 2019-04-30 | 2019-09-10 | 兴化市统一齿轮有限公司 | A kind of automobile gearbox gear and its manufacturing method |
| CN110270802A (en) * | 2019-07-05 | 2019-09-24 | 哈尔滨汽轮机厂有限责任公司 | A kind of processing method of duplicate gear |
| CN211726057U (en) * | 2019-12-31 | 2020-10-23 | 新昌县宏昇机械厂 | Paper shredder with double gears formed by integrally extrusion |
-
2019
- 2019-12-31 CN CN201911406980.4A patent/CN113118719A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201632308U (en) * | 2009-12-31 | 2010-11-17 | 林清标 | Paper cleaning mechanism of shredder |
| CN202146808U (en) * | 2011-06-14 | 2012-02-22 | 茂新五金制品（深圳）有限公司 | Transmission mechanism of high-efficiency paper shredder |
| CN203329767U (en) * | 2013-05-09 | 2013-12-11 | 广州科密股份有限公司 | Transmission mechanism of paper shredder and gear combination of paper shredder |
| CN104589002A (en) * | 2014-11-20 | 2015-05-06 | 江苏威鹰机械有限公司 | Manufacturing technology of hollow outer gear of electric forklift driving flange |
| CN107186158A (en) * | 2017-06-09 | 2017-09-22 | 上海交通大学 | Duplicate gear forging technology and mould based on plate bulk forming |
| CN110026514A (en) * | 2019-03-19 | 2019-07-19 | 洛阳福瑞可汽车零部件有限公司 | A kind of active triple gear cone tooth shapes the process of closed-die forging with end tooth only simultaneously |
| CN110216429A (en) * | 2019-04-30 | 2019-09-10 | 兴化市统一齿轮有限公司 | A kind of automobile gearbox gear and its manufacturing method |
| CN110270802A (en) * | 2019-07-05 | 2019-09-24 | 哈尔滨汽轮机厂有限责任公司 | A kind of processing method of duplicate gear |
| CN211726057U (en) * | 2019-12-31 | 2020-10-23 | 新昌县宏昇机械厂 | Paper shredder with double gears formed by integrally extrusion |
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