CN104827037A - Machining method for producing helical gear by adoption of injection molding technology - Google Patents

Machining method for producing helical gear by adoption of injection molding technology Download PDF

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Publication number
CN104827037A
CN104827037A CN201510195721.7A CN201510195721A CN104827037A CN 104827037 A CN104827037 A CN 104827037A CN 201510195721 A CN201510195721 A CN 201510195721A CN 104827037 A CN104827037 A CN 104827037A
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CN
China
Prior art keywords
machining
injection molding
blank
helical gear
adoption
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
Application number
CN201510195721.7A
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Chinese (zh)
Inventor
宋金帅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Powder Metallurgy Science And Technology Ltd Of Upper Nereid Section
Original Assignee
Powder Metallurgy Science And Technology Ltd Of Upper Nereid Section
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Powder Metallurgy Science And Technology Ltd Of Upper Nereid Section filed Critical Powder Metallurgy Science And Technology Ltd Of Upper Nereid Section
Priority to CN201510195721.7A priority Critical patent/CN104827037A/en
Publication of CN104827037A publication Critical patent/CN104827037A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a machining method for producing a helical gear by adoption of injection molding technology. The machining method comprises following steps of uniformly mixing iron-base powder raw material with a binder into a blender mixer; placing and heating prepared feeding material into an injection molding machine and machining feeding material to be blank by means of the injection molding machine; placing the blank into extract liquor for heating in order to remove paraffin of the binder; heating the degreased blank at 800 to 900 DEG C for pre-sintering and placing the degreased blank into a vacuum sintering furnace for high-temperature sintering.The machining method for producing the helical gear by adoption of injection molding technology has following beneficial effects: parts, produced by the machining method, have uniform internal structures with the density ranging from 98 to 99.5%; requirements for strength, hardness and wear-resisting properties can be satisfied; high dimensional accuracy and fine surface smoothness are achieved; by adoption of a one-off forming method, post-machining operation is unnecessarily performed; and cost is greatly reduced.

Description

A kind of injection molding technique produces helical gear processing method
Technical field
The present invention relates to powder metallurgical technology, specifically a kind of injection molding technique produces helical gear processing method.
Background technology
Current precise electronic product parts generally adopt working of plastics, and mould is easily shaping, but a lot of mechanical performance such as working of plastics intensity hardness does not reach instructions for use, for meeting instructions for use, adopt metal material to replace.This product structure is complicated, and shape is too little, and machined efficiency is slow, and cost is high, therefore considers to adopt metal injection molded production technology.
Summary of the invention
A kind of injection molding technique is the object of the present invention is to provide to produce helical gear processing method, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of injection molding technique produces helical gear processing method, and concrete production stage is as follows: iron-based powder raw material and binding agent are placed in batch mixer and mix by (1); (2) feeding prepared is placed in injection (mo(u)lding) machine to heat, is machined to blank by injection moulding; (3) blank is put in extract the paraffin heating to slough in binding agent; (4) blank after degreasing is heated to 800 ~ 900 DEG C and does pre-burning, and be placed in vacuum sintering furnace and carry out high temperature sintering.
As the further scheme of the present invention: the ejecting structure of described injection (mo(u)lding) machine adopts gear rotational structure.
Compared with prior art, the invention has the beneficial effects as follows: the inside parts even tissue that processing method of the present invention is produced, density can reach 98 ~ 99.5%, intensity, hardness and anti-wear performance can meet the demands, dimensional accuracy is high, and surface smoothness is good, once-forming, without the need to aft-loaded airfoil, greatly reduce costs.
Accompanying drawing explanation
Fig. 1 is the helical gear schematic diagram adopting the present invention to produce.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In the embodiment of the present invention, a kind of injection molding technique produces helical gear processing method, and concrete production stage is as follows: iron-based powder raw material and binding agent are placed in batch mixer and mix by (1); (2) feeding prepared is placed in injection (mo(u)lding) machine to heat, is machined to blank by injection moulding; (3) blank is put in extract the paraffin heating to slough in binding agent; (4) blank after degreasing is heated to 800 ~ 900 DEG C and does pre-burning, and be placed in vacuum sintering furnace and carry out high temperature sintering.
Because product structure is complicated, mould structure is also quite complicated, to damage when the design of main ejecting mechanism will guarantee that product ejects product, adopt raw metal to compare plastics and there is no toughness, be difficult to the demoulding, there will be and pull, for guaranteeing the demoulding smoothly after injection moulding, mold ejection structure adopts special gear rotational structure, demolding structure provides stable power by oil hydraulic cylinder, after mould is opened, oil hydraulic cylinder is started working, and slowly promotes ejecting structure ejecting product, whole process need 3 ~ 5min, after pickup, ejecting mechanism is return, and matched moulds carries out injection next time.Mould structure after being improved by this kind, smoothly by goods ejection die, and product of not damaging.
Use the helical gear of the present invention's production as shown in Figure 1, helical gear inside parts even tissue, density can reach 98 ~ 99.5%, intensity, hardness and anti-wear performance can meet the demands, and dimensional accuracy is high, and surface smoothness is good, once-forming, without the need to aft-loaded airfoil, greatly reduce costs.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.

Claims (2)

1. injection molding technique produces a helical gear processing method, it is characterized in that, concrete production stage is as follows: iron-based powder raw material and binding agent are placed in batch mixer and mix by (1); (2) feeding prepared is placed in injection (mo(u)lding) machine to heat, is machined to blank by injection moulding; (3) blank is put in extract the paraffin heating to slough in binding agent; (4) blank after degreasing is heated to 800 ~ 900 DEG C and does pre-burning, and be placed in vacuum sintering furnace and carry out high temperature sintering.
2. injection molding technique according to claim 1 produces helical gear processing method, it is characterized in that, the ejecting structure of described injection (mo(u)lding) machine adopts gear rotational structure.
CN201510195721.7A 2015-04-23 2015-04-23 Machining method for producing helical gear by adoption of injection molding technology Pending CN104827037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510195721.7A CN104827037A (en) 2015-04-23 2015-04-23 Machining method for producing helical gear by adoption of injection molding technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510195721.7A CN104827037A (en) 2015-04-23 2015-04-23 Machining method for producing helical gear by adoption of injection molding technology

Publications (1)

Publication Number Publication Date
CN104827037A true CN104827037A (en) 2015-08-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510195721.7A Pending CN104827037A (en) 2015-04-23 2015-04-23 Machining method for producing helical gear by adoption of injection molding technology

Country Status (1)

Country Link
CN (1) CN104827037A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109014212A (en) * 2018-08-15 2018-12-18 上海精科粉末冶金科技有限公司 A kind of processing method of metal injection molding technology production 5G communication isolator
CN109894618A (en) * 2019-04-03 2019-06-18 嘉兴市永泰五金塑料有限责任公司 It is a kind of high intensity blending formula chair wave gear part and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004089563A1 (en) * 2003-04-03 2004-10-21 Taisei Kogyo Co., Ltd. Method for producing sintered powder molding, sintered powder molding, method for producing injection powder molding, injection powder molding and die for injection powder molding
CN101555937A (en) * 2009-05-20 2009-10-14 中南大学 Iron-based gradient structure gear and manufacturing method thereof
CN102758134A (en) * 2011-04-26 2012-10-31 山东金聚粉末冶金有限公司 Transmission tooth and manufacturing method thereof
CN103121277A (en) * 2013-02-02 2013-05-29 宁波思迈工业科技有限公司 Spiral demoulding device of bevel gear injection mold
CN103381482A (en) * 2013-08-01 2013-11-06 兰州金浩机械制造有限公司 Injection forming method for preparing helical gear

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004089563A1 (en) * 2003-04-03 2004-10-21 Taisei Kogyo Co., Ltd. Method for producing sintered powder molding, sintered powder molding, method for producing injection powder molding, injection powder molding and die for injection powder molding
CN101555937A (en) * 2009-05-20 2009-10-14 中南大学 Iron-based gradient structure gear and manufacturing method thereof
CN102758134A (en) * 2011-04-26 2012-10-31 山东金聚粉末冶金有限公司 Transmission tooth and manufacturing method thereof
CN103121277A (en) * 2013-02-02 2013-05-29 宁波思迈工业科技有限公司 Spiral demoulding device of bevel gear injection mold
CN103381482A (en) * 2013-08-01 2013-11-06 兰州金浩机械制造有限公司 Injection forming method for preparing helical gear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109014212A (en) * 2018-08-15 2018-12-18 上海精科粉末冶金科技有限公司 A kind of processing method of metal injection molding technology production 5G communication isolator
CN109894618A (en) * 2019-04-03 2019-06-18 嘉兴市永泰五金塑料有限责任公司 It is a kind of high intensity blending formula chair wave gear part and preparation method thereof

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Application publication date: 20150812