CN108869695A - A kind of car engine balance shaft plastic gear and its manufacturing method - Google Patents
A kind of car engine balance shaft plastic gear and its manufacturing method Download PDFInfo
- Publication number
- CN108869695A CN108869695A CN201811052624.2A CN201811052624A CN108869695A CN 108869695 A CN108869695 A CN 108869695A CN 201811052624 A CN201811052624 A CN 201811052624A CN 108869695 A CN108869695 A CN 108869695A
- Authority
- CN
- China
- Prior art keywords
- center portion
- gear ring
- iron core
- drop center
- groove
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011347 resin Substances 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000001746 injection moulding Methods 0.000 claims abstract description 11
- 230000004323 axial length Effects 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 229910000576 Laminated steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
-
- 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
Abstract
The invention discloses a kind of car engine balance shaft plastic gear and its manufacturing methods, including iron core and resin gear ring, the iron core includes shaft sleeve part, drop center portion and disc portion, disc portion is located at the end of shaft sleeve part and drop center portion the same side, drop center portion outer peripheral surface is tightly attached in gear ring injection molding, cooperated between gear ring inner surface and drop center portion outer peripheral surface by double wedge and groove, circumferential limit is carried out to gear ring.The present invention is using steel plate as iron core substrate, connection installation position is unlikely to deform, using gear ring of the resin material molding with the gear teeth, iron core is located at the overhanging structure of end using spoke, has the present invention and absorbs and balance vibrating function, balance shock effect is improved in conjunction with clump weight and Multi-stage transmission, self-lubricating, it is light-weight, it is not easy to get rusty, good insulating reduces noise.Iron core wheel rim is connect with resin gear ring using injection molding close-fitting and groove double wedge structure limits, and is avoided traditional packaging type connection and is limited the defect for being easy cracking damage, increases service life.
Description
Technical field
The invention belongs to automobile engine auxiliary equipment technical fields, and in particular to a kind of car engine balance shaft resin
Gear and its manufacturing method.
Background technique
Currently, the gear for being applied to car engine balance shaft device mostly uses steel to manufacture greatly, however its noise-and-vibration-reduction
And other effects it is poor.To improve the requirement of automobile engine vibration and noise reducing, applicant develops a kind of automobile hair using plastic gear
Motivation balance shaft apparatus.Plastic gear can be divided into full-plastic, assembly type and mosaic according to structure type, and full-plastic is being installed
When, it is easy to happen conquassation deformation at keyway, forms pressure and concentrates, biggish torque cannot be transmitted；Assembly type is at reamer bolt
It is loosened with occurring to wriggle；Conventional damascene type plastic gear includes the resin gear ring of pulley teeth and the iron core of support gear ring, iron core packet
Shaft sleeve part and gear ring for being set on axis is included to directly support the drop center portion on basis and be supported between drop center portion and shaft sleeve part
Disc portion, resin gear ring, which is wrapped in drop center portion, to be realized and limits to the axial and circumferential of gear ring, and disc portion is located at drop center portion and axis
The axially symmetric center in set portion.Such mosaic gear is easily formed larger since resin is different from the swell value of iron core inserts
Internal stress, cracking damage is easy to happen, since its spoke is in axially symmetric center, to the balance shock effect of engine
Smaller, the manufacture of iron core generally uses steel ingot to forge molding or casting and forming, and manufacturing cost is higher.
Summary of the invention
For above-mentioned existing issue, the present invention is intended to provide one kind is at low cost, noise is small, balance shock effect is good, uses
The car engine balance shaft plastic gear and its manufacturing process of service life length.
For this purpose, the present invention uses following technical scheme：A kind of car engine balance shaft plastic gear, including iron core and tree
Rouge gear ring, the iron core include shaft sleeve part, drop center portion and disc portion, characterized in that the disc portion is located at shaft sleeve part and wheel rim
Drop center portion outer peripheral surface is tightly attached in the end of portion the same side, gear ring injection molding, leads between gear ring inner surface and drop center portion outer peripheral surface
Double wedge and groove cooperation are crossed, circumferential limit is carried out to gear ring.
As supplement to above-mentioned technical proposal and perfect, the invention also includes following technical characteristics.
The circumferentially arranged multiple grooves of the drop center portion outer peripheral surface, the gear ring inner surface is circumferentially arranged multiple and institute
State the double wedge of groove cooperation.
Length of the groove in drop center portion axial direction is less than drop center portion axial length, and groove is in drop center portion one end end
Opening, other end end-enclosed, can play the role of axial limiting to resin gear ring.
The half of of length no more than drop center portion axial length of the groove in drop center portion axial direction.
The gear teeth on the resin gear ring are helical teeth structure.
A kind of manufacturing method of the car engine balance shaft plastic gear, characterized in that use steel plate as iron core
Substrate is composed of mold to laminated steel cold-punching molding iron core using cavity plate and punch-pin, and cavity plate is using cylindrical pillar as center ring
Around annular groove, punch-pin is cylindrical shape with a central hole, using iron core as insert injection molding resin gear ring, mainly by following
A few step manufactures：
The first step makes iron core steel plate blank, steel plate is cut into the round pie with central through hole, central through hole diameter is less than
The plastic gear shaft sleeve part diameter of bore；
Second step passes through more secondary molds iron core blank to pressure cold punching steel plate blank shaped cross-sections at U-shaped respectively, mold concave
The cylinder pillar diameter of mould gradually increases, and annular groove outer diameter gradually reduces, and corresponding punch-pin thickness is gradually corresponding to be reduced；
Third step, the groove on wheel rim pressing outer peripheral surface, peripherally disposed multiple fins on cavity plate annular groove outer wall lead to
The groove on extrusion molding wheel rim outer peripheral surface is crossed, fabrication of iron core is completed；
4th step, using iron core as inserts, injection molding resin gear ring.
The present invention can achieve following beneficial effect：1, the present invention connects installation position using steel plate as iron core substrate
It is unlikely to deform, there is the gear ring of the gear teeth using resin material molding, iron core is located at the overhanging structure of end using spoke, makes this hair
It is bright that there is absorption and balance vibrating function, balance shock effect, self-lubricating, weight are improved in conjunction with clump weight and Multi-stage transmission
Gently, it is not easy to get rusty, good insulating reduces noise.2, iron core wheel rim and resin gear ring are connect and recessed using injection molding close-fitting
The limit of geosynclinal convex toothing avoids traditional packaging type connection and limits the defect for being easy cracking damage, increases service life.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of steel inner ring of the invention.
Specific embodiment
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawing.
As Figure 1-Figure 2, the present invention includes iron core 2 and resin gear ring 1, and the gear teeth on resin gear ring are helical teeth structure,
Iron core includes shaft sleeve part 22, drop center portion 21 and disc portion 23, and disc portion 23 is located at the end of 21 the same side of shaft sleeve part 22 and drop center portion
21 outer peripheral surface of drop center portion, the circumferentially arranged multiple grooves 24 of drop center portion outer peripheral surface, tree are tightly attached in portion, 1 injection molding of resin gear ring
The circumferentially arranged multiple double wedges with groove cooperation of rouge gear ring inner surface, carry out circumferential limit to resin gear ring 1.Groove 24 is being taken turns
The half of of length no more than drop center portion axial length in rim portion axial direction, groove is drop center portion one end is open-ended, other end end
Portion's closing, can play the role of axial limiting to resin gear ring.
The manufacturing method of the car engine balance shaft plastic gear uses steel plate as iron core substrate, using cavity plate and
Punch-pin is composed of mold to laminated steel cold-punching molding iron core, and around annular groove centered on cylinder pillar, punch-pin is cavity plate
Cylindrical shape with a central hole includes the following steps using iron core as insert injection molding resin gear ring：
The first step makes iron core steel plate blank, steel plate is cut into the round pie with central through hole, central through hole diameter is less than
Plastic gear shaft sleeve part diameter of bore；
Second step passes through more secondary molds iron core blank to pressure cold punching steel plate blank shaped cross-sections at U-shaped respectively, mold concave
The cylinder pillar diameter of mould gradually increases, and annular groove outer diameter gradually reduces, and corresponding punch-pin thickness is gradually corresponding to be reduced；
Third step, the groove on wheel rim pressing outer peripheral surface, peripherally disposed multiple fins on cavity plate annular groove outer wall lead to
The groove on extrusion molding wheel rim outer peripheral surface is crossed, fabrication of iron core is completed；
4th step, using iron core as inserts, injection molding resin gear ring.
Claims (6)
1. a kind of car engine balance shaft plastic gear, including iron core（2）With resin gear ring（1）, the iron core includes axle sleeve
Portion（22）, drop center portion（21）And disc portion（23）, it is characterised in that：The disc portion（23）Positioned at shaft sleeve part（22）And drop center portion
（21）The end of the same side, resin gear ring（1）Drop center portion is tightly attached in injection molding（21）Outer peripheral surface, resin gear ring（1）Interior table
Face and drop center portion（21）Cooperated between outer peripheral surface by double wedge and groove, to resin gear ring（1）Carry out circumferential limit.
2. a kind of car engine balance shaft plastic gear according to claim 1, it is characterised in that：The drop center portion
The circumferentially arranged multiple grooves of outer peripheral surface（24）, the resin gear ring inner surface is circumferentially arranged multiple with groove cooperation
Double wedge.
3. a kind of car engine balance shaft plastic gear according to claim 2, it is characterised in that：The groove
（24）Length in drop center portion axial direction is less than drop center portion axial length, and groove is drop center portion one end is open-ended, other end end
Portion's closing, can play the role of axial limiting to resin gear ring.
4. a kind of car engine balance shaft plastic gear according to claim 3, it is characterised in that：The groove
（24）The half of of length no more than drop center portion axial length in drop center portion axial direction.
5. a kind of car engine balance shaft plastic gear according to claim 4, it is characterised in that：The resin tooth
The gear teeth on circle are helical teeth structure.
6. a kind of manufacturing method of the car engine balance shaft plastic gear as described in claim 1,2,3,4 or 5, feature exist
In including following manufacturing step：
The first step makes iron core steel plate blank, steel plate is cut into the round pie with central through hole, central through hole diameter is less than
The plastic gear shaft sleeve part diameter of bore；
Second step passes through more secondary molds iron core blank to pressure cold punching steel plate blank shaped cross-sections at U-shaped respectively, mold concave
The cylinder pillar diameter of mould gradually increases, and annular groove outer diameter gradually reduces, and corresponding punch-pin thickness is gradually corresponding to be reduced；
Third step, the groove on wheel rim pressing outer peripheral surface, peripherally disposed multiple fins on cavity plate annular groove outer wall lead to
The groove on extrusion molding wheel rim outer peripheral surface is crossed, fabrication of iron core is completed；
4th step, using iron core as inserts, injection molding resin gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052624.2A CN108869695A (en) | 2018-09-10 | 2018-09-10 | A kind of car engine balance shaft plastic gear and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052624.2A CN108869695A (en) | 2018-09-10 | 2018-09-10 | A kind of car engine balance shaft plastic gear and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108869695A true CN108869695A (en) | 2018-11-23 |
Family
ID=64323823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811052624.2A Pending CN108869695A (en) | 2018-09-10 | 2018-09-10 | A kind of car engine balance shaft plastic gear and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108869695A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005783A (en) * | 2019-04-19 | 2019-07-12 | 浙江美亚特精密机械有限公司 | A kind of composite metal/plastic gear and its manufacturing process and purposes |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205967A (en) * | 2006-12-19 | 2008-06-25 | 铃木株式会社 | Plastic gear |
| CN201363408Y (en) * | 2009-01-22 | 2009-12-16 | 浙江钱江摩托股份有限公司 | Motorcycle balance-shaft gear |
| US20100294064A1 (en) * | 2009-05-20 | 2010-11-25 | Kabushiki Kaisha Pn | Core metal and injection gear, and process for manufacturing core metal |
| CN201953948U (en) * | 2011-01-11 | 2011-08-31 | 自贡市川力实业有限公司 | Transmission gear for motorcycle |
| CN105339108A (en) * | 2013-05-31 | 2016-02-17 | 高周波热錬株式会社 | Method of manufacturing metal core for resin gear |
| JP2017087555A (en) * | 2015-11-10 | 2017-05-25 | タイガースポリマー株式会社 | Synthetic resin molded body and manufacturing method therefor |
| CN209067798U (en) * | 2018-09-10 | 2019-07-05 | 浙江美亚特精密机械有限公司 | A kind of car engine balance shaft plastic gear |
-
2018
- 2018-09-10 CN CN201811052624.2A patent/CN108869695A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205967A (en) * | 2006-12-19 | 2008-06-25 | 铃木株式会社 | Plastic gear |
| CN201363408Y (en) * | 2009-01-22 | 2009-12-16 | 浙江钱江摩托股份有限公司 | Motorcycle balance-shaft gear |
| US20100294064A1 (en) * | 2009-05-20 | 2010-11-25 | Kabushiki Kaisha Pn | Core metal and injection gear, and process for manufacturing core metal |
| CN201953948U (en) * | 2011-01-11 | 2011-08-31 | 自贡市川力实业有限公司 | Transmission gear for motorcycle |
| CN105339108A (en) * | 2013-05-31 | 2016-02-17 | 高周波热錬株式会社 | Method of manufacturing metal core for resin gear |
| JP2017087555A (en) * | 2015-11-10 | 2017-05-25 | タイガースポリマー株式会社 | Synthetic resin molded body and manufacturing method therefor |
| CN209067798U (en) * | 2018-09-10 | 2019-07-05 | 浙江美亚特精密机械有限公司 | A kind of car engine balance shaft plastic gear |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005783A (en) * | 2019-04-19 | 2019-07-12 | 浙江美亚特精密机械有限公司 | A kind of composite metal/plastic gear and its manufacturing process and purposes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102446127B1 (en) | METHOD FOR THE PRODUCTION OF HOLLOW CHAMBER VALVES | |
| JP4629863B2 (en) | Flow molding method and molding apparatus | |
| US5016340A (en) | Method of manufacture of a rotor core member for a dynamoelectric machine | |
| CN106862752B (en) | Wheel hub composite forming method | |
| CN106694743A (en) | Automobile crankshaft thickened hub multi-wedge wheel forming technique and tool | |
| CN106949167B (en) | The method of molding and machining clutch hub | |
| CN209067798U (en) | A kind of car engine balance shaft plastic gear | |
| CN108869695A (en) | A kind of car engine balance shaft plastic gear and its manufacturing method | |
| JP2000283262A (en) | Steel for gear, drive plate gear and manufacture thereof | |
| CN201604520U (en) | Component for transmitting torque between gear group and shaft | |
| CN109175094B (en) | Forming method and die set for crankshaft isolation belt wheel shell with multi-wedge tooth structure | |
| CN108284301A (en) | A kind of new-energy automobile driving motor axis processing technique | |
| US10576822B2 (en) | Power take-off unit ring gear shaft, manufacturing method thereof and apparatus comprising the same | |
| CN103363082A (en) | Torque transmitting assembly and method of producing | |
| CN107262723B (en) | A kind of preparation method of powder metallurgical gear or belt wheel | |
| CN206316297U (en) | One of radially inner ring finishing die of thin wall cylinder inwall | |
| JP2019076943A (en) | Metal mold for forging | |
| JPH09229163A (en) | Differential case and its manufacture | |
| KR20180091162A (en) | Clutch Cylinder for Vehicle Producing Device | |
| KR101273225B1 (en) | Manufacturing meathod of hollow drive shaft for constant velocity joint | |
| CN209124806U (en) | A kind of parking gear blank and the lower die for forging the parking gear blank | |
| JP2002130322A (en) | Clutch drum of automatic transmission for automobile | |
| CN104942204A (en) | Ring-rolling blank making combined mold for automobile transmission gear | |
| CN208929116U (en) | A kind of boss bolt cold upsetting die of car | |
| CN202754008U (en) | Improved steering wheel hub |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181123 |
|
| WD01 | Invention patent application deemed withdrawn after publication |