CN112453406A - Blade connecting seat preparation method - Google Patents
Blade connecting seat preparation method Download PDFInfo
- Publication number
- CN112453406A CN112453406A CN202011161485.4A CN202011161485A CN112453406A CN 112453406 A CN112453406 A CN 112453406A CN 202011161485 A CN202011161485 A CN 202011161485A CN 112453406 A CN112453406 A CN 112453406A
- Authority
- CN
- China
- Prior art keywords
- connecting seat
- positioning pin
- blade connecting
- blade
- blank
- 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
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 14
- 238000005245 sintering Methods 0.000 claims abstract description 13
- 238000004080 punching Methods 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 238000005470 impregnation Methods 0.000 claims 1
- 241001391944 Commicarpus scandens Species 0.000 abstract description 4
- 230000008595 infiltration Effects 0.000 description 6
- 238000001764 infiltration Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a preparation method of a blade connecting seat, which comprises the following steps: s1: preparing a positioning pin in advance; s2: adding the material powder into a lower die cavity; s3: placing the locating pin obtained in the step S1 into a lower punching die cavity; s4: closing the upper punch and the lower punch, and pressing to generate a blade connecting seat blank with a positioning pin; s5: stripping the upper punch and the lower punch, and taking out the blade connecting seat blank with the positioning pin obtained in the step S4; s6: and sintering and molding the blade connecting seat blank with the positioning pin obtained in the step S5. The invention can improve the strength, density and hardness of the two cylinders serving as the blade positioning pins on the top of the blade connecting seat, and overcome the problem that the root of the blade connecting seat is easy to break.
Description
Technical Field
The invention belongs to the technical field of metallurgical sintering and pressing, and particularly relates to a preparation method of a blade connecting seat.
Background
Be applied to blade connecting seat on the lawn mower, its top terminal surface is equipped with two cylinders, is as the blade locating pin. The base is connected with the output rotating shaft of the mower. In the actual working process of the mower, the blade connecting seat is always in a high-strength working state. Wherein, two cylinders as blade positioning pins on the top need to bear larger transverse shearing force, so that the cylinders are required to have higher strength and hardness at the same time. The existing processing technology for the blade connecting seat has the following working process, S1: adding the raw material powder into a lower die cavity; s2: the upper punch and the lower punch are pressed and formed, and a cylinder is punched on the top surface of the blade connecting seat by arranging corresponding cylindrical grooves on the lower end surface of the upper punch; s3: and demolding, sintering and molding. The problems of the processing mode are as follows: the two cylinders at the top of the blade connecting seat are formed by the fact that raw material powder in the lower punching die cavity enters the cylindrical groove in the upper punch under the extrusion effect, and therefore the problems of small powder amount, low density, low strength and easiness in root fracture exist. Therefore, it is a research direction for those skilled in the art to develop a new method for manufacturing a blade connecting seat to overcome the above problems.
Disclosure of Invention
The invention aims to provide a preparation method of a blade connecting seat, which can improve the strength, density and hardness of two cylinders serving as blade positioning pins on the top of the blade connecting seat and overcome the problem that the root of the blade connecting seat is easy to break.
The technical scheme is as follows:
a method for preparing a blade connecting seat comprises the following steps: s1: preparing a positioning pin in advance; s2: adding the material powder into a lower die cavity; s3: placing the locating pin obtained in the step S1 into a lower punching die cavity; s4: closing the upper punch and the lower punch, and pressing to generate a blade connecting seat blank with a positioning pin; s5: stripping the film from the punching and lower punching, and taking out the blade connecting seat blank with the positioning pin obtained in S4; s6: and sintering and molding the blade connecting seat blank with the positioning pin taken out of the S5.
By adopting the technical scheme: because the locating pin is of a cylindrical structure, a high-strength locating pin can be prepared in a pre-preparation process. The locating pin is then mounted to the top surface of the blade attachment seat blank during the mold closing process. The problem of the integrated into one piece's locating pin intensity, density and hardness not enough among the prior art is overcome.
Preferably, in the above method for manufacturing a blade attachment seat, the step S6 includes the steps of: s61: sleeving a copper infiltration ring on the root part of the positioning pin of the blade connecting seat blank with the positioning pin obtained in the step S5; s62: and (5) sintering and forming the blank of the blade connecting seat provided with the copper infiltrated ring on the root part of the positioning pin obtained in the step S61.
By adopting the technical scheme: the expansion effect of the positioning pin to the outside after copper infiltration and the welding action of the copper infiltration agent at the joint part of the positioning pin and the blade connecting seat are utilized in the sintering process, so that the positioning pin and the base are better fixed into a whole. Therefore, the strength of the root of the positioning pin is enhanced, and the problem that the root of the positioning pin is easy to break is solved.
More preferably, in the method for manufacturing the blade attachment seat: and preparing the positioning pin in advance by adopting a stamping and sintering mode.
More preferably, in the method for manufacturing the blade attachment seat: is prepared by prealloy powder DistalloyAB powder.
Compared with the prior art, the invention can improve the strength, density and hardness of the two cylinders serving as the blade positioning pins on the top of the blade connecting seat, and overcome the problem that the root of the blade connecting seat is easy to break.
Drawings
The invention is described in further detail in the following description of embodiments with reference to the accompanying drawings:
FIG. 1 is a schematic flow chart of the present invention;
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the above description will be further described with reference to various embodiments.
FIG. 1 shows example 1 of the present invention:
a method for preparing a blade connecting seat comprises the following steps: s1: preparing a positioning pin in advance; s2: adding the material powder into a lower die cavity; s3: placing the locating pin obtained in the step S1 into a lower punching die cavity; s4: closing the upper punch and the lower punch, and pressing to generate a blade connecting seat blank with a positioning pin; s5: stripping the film from the punching and lower punching, and taking out the blade connecting seat blank with the positioning pin obtained in S4; s6: sleeving a copper infiltration ring on the root part of the positioning pin of the blade connecting seat blank with the positioning pin obtained in the step S5; s7: and (5) sintering and forming the blank of the blade connecting seat provided with the copper infiltrated ring on the root part of the positioning pin obtained in the step S6.
In the processing process: the high-strength positioning pin prefabricated in step S1 can be prepared from prealloy powder DistalloyAB powder. The properties are shown in the following table:
through the steps S2-S4, the prefabricated positioning pin is placed into the die cavity and pressed together with the material powder for pressing the blade connecting seat, so that the prefabricated positioning pin and the blade connecting seat blank are tightly connected into a whole.
Through the steps S6-S7, in the sintering process of the blank of the blade connecting seat, the positioning pin and the base are better fixed into a whole by utilizing the outward expansion effect of the positioning pin after copper infiltration and the welding action of the copper infiltration agent at the joint part of the positioning pin and the blade connecting seat in the sintering process. Thereby enhancing the strength of the root portion of the dowel pin.
The processing technology solves the problem that the strength of the positioning pin produced by the blade base produced by adopting a powder metallurgy method is low, and realizes the scheme of producing the blade base by adopting powder metallurgy.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. The protection scope of the present invention is subject to the protection scope of the claims.
Claims (4)
1. A preparation method of a blade connecting seat is characterized by comprising the following steps:
s1: preparing a positioning pin in advance;
s2: adding the material powder into a lower die cavity;
s3: placing the locating pin obtained in the step S1 into a lower punching die cavity;
s4: closing the upper punch and the lower punch, and pressing to generate a blade connecting seat blank with a positioning pin;
s5: demoulding the upper punch and the lower punch, and taking out the blade connecting seat blank with the positioning pin obtained in the step S4;
s6: and sintering and molding the blade connecting seat blank with the positioning pin taken out of the S5.
2. The method for preparing a blade attachment seat according to claim 1 or 2, wherein the step S6 includes the steps of:
s61: sleeving a copper impregnation ring on the root part of the positioning pin of the blade connecting seat blank with the positioning pin taken out in the step S5;
s62: and (5) sintering and forming the blank of the blade connecting seat provided with the copper infiltrated ring on the root part of the positioning pin obtained in the step S61.
3. The method for preparing a blade attachment seat according to claim 2, wherein in the step S1: the positioning pin is prepared in advance by adopting a stamping and sintering mode.
4. The method for preparing a blade attachment seat according to claim 2, wherein in the step S1: the locating pin is prepared from prealloy powder DistalloyAB powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161485.4A CN112453406A (en) | 2020-10-27 | 2020-10-27 | Blade connecting seat preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161485.4A CN112453406A (en) | 2020-10-27 | 2020-10-27 | Blade connecting seat preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112453406A true CN112453406A (en) | 2021-03-09 |
Family
ID=74834504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011161485.4A Pending CN112453406A (en) | 2020-10-27 | 2020-10-27 | Blade connecting seat preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112453406A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5173090A (en) * | 1991-03-01 | 1992-12-22 | Hughes Tool Company | Rock bit compact and method of manufacture |
| CN101168230A (en) * | 2006-10-27 | 2008-04-30 | 河南富耐克超硬材料有限公司 | Method for manufacturing ultra-hard composite blade |
| CN102458721A (en) * | 2009-06-22 | 2012-05-16 | 吉列公司 | A method of forming a functional razor cartridge and a functional razor cartridge |
| US20130129435A1 (en) * | 2011-11-23 | 2013-05-23 | Sandvik Intellectual Property Ab | Exchangeable insert seat member for cutting tool |
| CN104117679A (en) * | 2014-06-24 | 2014-10-29 | 宁波甬台粉末冶金有限公司 | Gear shaft sleeve and die and method for machining same |
| CN104918737A (en) * | 2012-12-21 | 2015-09-16 | 弗朗茨·海默机械制造两合公司 | Tool holder with built-in cavities |
| CN105537584A (en) * | 2015-12-31 | 2016-05-04 | 株洲金鼎硬质合金有限公司 | Alloy hammerhead, and mould and method for producing alloy hammerhead |
| CN109093123A (en) * | 2018-09-12 | 2018-12-28 | 北京恒源天桥粉末冶金有限公司 | A kind of preparation method of Combined filter element |
| CN109530704A (en) * | 2019-01-30 | 2019-03-29 | 武汉天和技术股份有限公司 | A kind of preparation method of plasma flare hollow cathode |
| CN110640147A (en) * | 2019-09-26 | 2020-01-03 | 深圳深蓝精机有限公司 | Cutter and manufacturing method thereof |
| CN110651587A (en) * | 2019-11-13 | 2020-01-07 | 金华市宇辰粉末冶金有限公司 | Tool apron and machining method thereof |
| CN111434459A (en) * | 2019-01-12 | 2020-07-21 | 郑州益信金刚石工具有限公司 | PCD grinding block tool bit and manufacturing method thereof |
-
2020
- 2020-10-27 CN CN202011161485.4A patent/CN112453406A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5173090A (en) * | 1991-03-01 | 1992-12-22 | Hughes Tool Company | Rock bit compact and method of manufacture |
| CN101168230A (en) * | 2006-10-27 | 2008-04-30 | 河南富耐克超硬材料有限公司 | Method for manufacturing ultra-hard composite blade |
| CN102458721A (en) * | 2009-06-22 | 2012-05-16 | 吉列公司 | A method of forming a functional razor cartridge and a functional razor cartridge |
| US20130129435A1 (en) * | 2011-11-23 | 2013-05-23 | Sandvik Intellectual Property Ab | Exchangeable insert seat member for cutting tool |
| CN104918737A (en) * | 2012-12-21 | 2015-09-16 | 弗朗茨·海默机械制造两合公司 | Tool holder with built-in cavities |
| CN104117679A (en) * | 2014-06-24 | 2014-10-29 | 宁波甬台粉末冶金有限公司 | Gear shaft sleeve and die and method for machining same |
| CN105537584A (en) * | 2015-12-31 | 2016-05-04 | 株洲金鼎硬质合金有限公司 | Alloy hammerhead, and mould and method for producing alloy hammerhead |
| CN109093123A (en) * | 2018-09-12 | 2018-12-28 | 北京恒源天桥粉末冶金有限公司 | A kind of preparation method of Combined filter element |
| CN111434459A (en) * | 2019-01-12 | 2020-07-21 | 郑州益信金刚石工具有限公司 | PCD grinding block tool bit and manufacturing method thereof |
| CN109530704A (en) * | 2019-01-30 | 2019-03-29 | 武汉天和技术股份有限公司 | A kind of preparation method of plasma flare hollow cathode |
| CN110640147A (en) * | 2019-09-26 | 2020-01-03 | 深圳深蓝精机有限公司 | Cutter and manufacturing method thereof |
| CN110651587A (en) * | 2019-11-13 | 2020-01-07 | 金华市宇辰粉末冶金有限公司 | Tool apron and machining method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 国营长江有线电厂: "《粉末冶金零件工艺》", 国防工业出版社, pages: 25 - 27 * |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210309 |
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| RJ01 | Rejection of invention patent application after publication |