CN102689138A - Method for batch production of precise hollow plungers - Google Patents
Method for batch production of precise hollow plungers Download PDFInfo
- Publication number
- CN102689138A CN102689138A CN2012101616011A CN201210161601A CN102689138A CN 102689138 A CN102689138 A CN 102689138A CN 2012101616011 A CN2012101616011 A CN 2012101616011A CN 201210161601 A CN201210161601 A CN 201210161601A CN 102689138 A CN102689138 A CN 102689138A
- Authority
- CN
- China
- Prior art keywords
- bulb
- minutes
- car
- grinding
- cylindrical
- 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
Images
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The invention provides a method for batch production of precise hollow plungers, belonging to the field of machinery processing. The method for batch production of precise hollow plungers includes the steps of: blanking raw materials; grinding an outer circle of a cylinder body; drilling a large hole along the direction of the central axis of the cylinder body on a meter lathe, reaming a large hole, drilling a middle hole, turning a identification groove, turning an outer circle of a bulb, drilling a small hole of a bulb, turning a round angle of the bulb, chamfering two ends of the cylinder body and turning the bulb; performing surface carburization, thermal treatment, casting, cleaning the large hole, performing the middle hole and bulb small hole treatments, fine grinding the outer circle of the bulb, grinding the surface of the bulb, super grinding the surface of the bulb, finally grinding the outer circle of the cylinder body and super grinding the outer circle of the cylinder body to obtain the precise hollow plunger. The method provided by the invention has the advantages of low processing cost, safety, reliability and practicality.
Description
Technical field
The present invention relates to field of machining, particularly a kind of method of producing accurate open tubular column in batches.
Background technology
Accurate hollow plunger is one of key components and parts of using of the vehicles such as automobile, is to aim at 500 tops of the world enterprise to provide and form a complete production network, and demand is very big.Use conventional methods when producing a large amount of accurate hollow plunger, the technology cost is high, occurs safety problem in the production process easily.
Summary of the invention
The purpose of this invention is to provide a kind of method of producing hollow plunger in batches, the technology cost is low, safe and reliable, practical.
The present invention provides a kind of method of producing accurate hollow plunger in batches, comprises the steps:
(1) raw material is carried out blanking;
(2) with the raw material car both ends of the surface after the blanking, the cylindrical of grinding column body bores macropore along the cylinder central axial direction, and the hinge macropore bores interstitial hole, the car identification slot, and car bulb cylindrical bores the bulb aperture, and car bulb fillet carries out chamfering with the two ends of cylinder, the car bulb;
(3) material behind the said car bulb of step (2) is carried out case-carbonizing and handle, heat treatment, stream grinds; Cleaning macropore, interstitial hole and bulb aperture, the cylindrical of correct grinding cylinder, the outer surface of correct grinding bulb; Grind the outer surface of bulb, the outer surface of ultra smart bulb, the cylindrical of whole grinding column body; The cylindrical of ultra smart cylinder promptly obtains said accurate hollow plunger.
The concrete grammar that the said case-carbonizing of step (3) is handled is following:
(A) with the material behind the car bulb 350 ℃～400 ℃ following preheatings 40～50 minutes, drop into carbon-potential control in the carburizing heat-treatment furnace of CP=0.4, be warming up to 830 ℃～850 ℃, be incubated 25～35 minutes;
(B) be warming up to 870 ℃～890 ℃, in 18～22 minutes, carbon potential be raised to CP=0.8 then, at this moment, carried out case-carbonizing 170～190 minutes;
(C) in 8～12 minutes, carbon potential is reduced to 0.7, furnace temperature remains on 870 ℃～890 ℃, and at this moment, case-carbonizing 28～32 minutes was cooled to 100 ℃ afterwards in 45～55 minutes;
(D) in 8～12 minutes, be warming up to 790 ℃～810 ℃, be incubated 45～55 minutes and come out of the stove.Adopt this method, obtaining the effective carburized layer in surface is 0.7～0.8mm, adopts the metallographic microscope check.
The heat treated concrete grammar of step (3) is: the material after case-carbonizing is handled was oil quenching 15～25 minutes, and 75 ℃～85 ℃ of control oil temperature are cleaned then, and tempering is 170～190 minutes in 175 ℃～185 ℃ tempering furnace.This step can adopt its hardness of Rockwell apparatus check.
The concrete grammar that the said stream of step (3) grinds is: adopt centrifugal finishing machine to remove sharp edge, burr the material after the heat treatment.
Advantage of the present invention: the technology cost is low, safe and reliable, practical.
Description of drawings
Fig. 1 is the structure diagram of accurate hollow plunger, 1-cylinder wherein, 2-macropore, 3-interstitial hole, 4-identification slot, 5-bulb, 6-bulb aperture, 7-bulb fillet, 8-chamfering.
The specific embodiment
The present invention produces the method for accurate hollow plunger (structure is as shown in Figure 1) in batches, comprises the steps:
(1) raw material is carried out blanking;
(2) with the raw material car both ends of the surface after the blanking, the cylindrical of grinding column body 1 bores macropore 2 along cylinder 1 central axial direction, hinge macropore 2; Bore interstitial hole 3, car identification slot 4, car bulb 5 cylindricals bore bulb aperture 6; Car bulb fillet 7 carries out chamfering 8 with the two ends of cylinder 1, car bulb 5;
(3) material behind the said car bulb of step (2) is carried out case-carbonizing and handle, heat treatment, stream grinds; Cleaning macropore 2, interstitial hole 3 and bulb aperture 6, the cylindrical of correct grinding cylinder 1, the outer surface of correct grinding bulb 5; Grind the outer surface of bulb 5, the outer surface of ultra smart bulb 5, the cylindrical of whole grinding column body 1; The cylindrical of ultra smart cylinder 1 promptly obtains said accurate hollow plunger.
The concrete grammar that the said case-carbonizing of step (3) is handled is following:
(A) with the material behind the car bulb 350 ℃～400 ℃ following preheatings 40～50 minutes, drop into carbon-potential control in the carburizing heat-treatment furnace of CP=0.4, be warming up to 830 ℃～850 ℃, be incubated 25～35 minutes;
(B) be warming up to 870 ℃～890 ℃, in 18～22 minutes, carbon potential be raised to CP=0.8 then, at this moment, carried out case-carbonizing 170～190 minutes;
(C) in 8～12 minutes, carbon potential is reduced to 0.7, furnace temperature remains on 870 ℃～890 ℃, and at this moment, case-carbonizing 28～32 minutes was cooled to 100 ℃ afterwards in 45～55 minutes;
(D) in 8～12 minutes, be warming up to 790 ℃～810 ℃, be incubated 45～55 minutes and come out of the stove.Adopt this method, obtaining the effective carburized layer in surface is 0.7～0.8mm, adopts the metallographic microscope check.
The heat treated concrete grammar of step (3) is: the material after case-carbonizing is handled was oil quenching 15～25 minutes, and 75 ℃～85 ℃ of control oil temperature are cleaned then, and tempering is 170～190 minutes in 175 ℃～185 ℃ tempering furnace.This step can adopt its hardness of Rockwell apparatus check.
The concrete grammar that the said stream of step (3) grinds is: adopt centrifugal finishing machine to remove sharp edge, burr removal the material after the heat treatment.
The raw material of said high-accuracy hollow plunger are meant that external code name 8620, specification are Φ 22 round steel, substitute with homemade 20CrNiMo, before blanking, adopt spectroanalysis instrument to press GB/T222-2006, GB/3077-1999 standard test.
Said blanking, car both ends of the surface, brill macropore 2, hinge macropore 2, brill interstitial hole 3, car identification slot 4, car bulb 5 cylindricals, car bulb fillet 7, chamfering, car bulb 5 are all accomplished through instrument lathe; Adopt the degree of depth in slide measure check length, external diameter, hole; Feeler gauge check aperture; Model check fillet, chamfering, bulb is checked with outside micrometer, coaxial admeasuring apparatus, roughness sample plate and ball position appearance.
Grinding column body 1 cylindrical in the step (2) adopts centerless grinder processing, uses outside micrometer check external diameter, roughness sample plate check surface; Grinding column body 1 cylindrical is arranged in before the boring, is in order to improve the dimensional accuracy and the positional precision of macropore 2, interstitial hole 3 and bulb aperture 6.
The cylindrical three process of the cylindrical of the said correct grinding cylinder 1 of step (3), the cylindrical of whole grinding column body 1, ultra smart cylinder 1 adopts M11100 centreless grinding, M11100 centreless grinding, the processing of 3M6280 Superfinishing machine respectively; Thereby guarantee the cylindrical required precision of cylinder 1, use outside micrometer, rib circle table, cylindrical amount appearance, LF-002-01 to check its precision.
The surface of the said correct grinding bulb 5 of step (3), the surface of grinding bulb 5, the surperficial three process of ultra smart bulb 5 adopt 3MZ1310B, CJ306,3M306 machine tooling respectively; Thereby guarantee the surface accuracy requirement of bulb, check the sphere precision with outside micrometer, coaxial admeasuring apparatus, roughness sample plate, ball position appearance, LF-002-01, D051.
The present invention is external with domestic material substitution; Use economical lathe; Through technology cleverly, but produce high-accuracy hollow plunger, can not only satisfy external production vehicles enterprise coupling and use, and greatly reduce production cost (having reduced about 60%).The circularity that the roughness on its bulb 5 surfaces is merely Ra0.1, bulb surface is that 0.005mm, profile tolerance are that 0.07mm, dimensional tolerance are 0.025mm, and the roughness on cylinder 1 surface is that Ra0.2, circularity are merely 0.001mm, linearity is that 0.005mm, dimensional tolerance are 0.004mm.The case-carbonizing layer thickness of final finished is 0.25～0.50mm, its hardness HR30N>77.5 and centre hardness HRc25～30.
Claims (4)
1. a method of producing accurate hollow plunger in batches is characterized in that comprising the steps:
(1) raw material is carried out blanking;
(2) with the raw material car both ends of the surface after the blanking, the cylindrical of grinding column body bores macropore along the cylinder central axial direction, and the hinge macropore bores interstitial hole, the car identification slot, and car bulb cylindrical bores the bulb aperture, and car bulb fillet carries out chamfering with the two ends of cylinder, the car bulb;
(3) material behind the said car bulb of step (2) is carried out case-carbonizing and handle, heat treatment, stream grinds; Cleaning macropore, interstitial hole and bulb aperture, the cylindrical of correct grinding cylinder, the outer surface of correct grinding bulb; Grind the outer surface of bulb, the outer surface of ultra smart bulb, the cylindrical of whole grinding column body; The cylindrical of ultra smart cylinder promptly obtains said accurate hollow plunger.
2. according to the method for the accurate hollow plunger of the said batch process of claim 1, it is characterized in that: the concrete grammar that the said case-carbonizing of step (3) is handled is following:
(A) with the material behind the car bulb 350 ℃～400 ℃ following preheatings 40～50 minutes, drop into carbon-potential control in the carburizing heat-treatment furnace of CP=0.4, be warming up to 830 ℃～850 ℃, be incubated 25～35 minutes;
(B) be warming up to 870 ℃～890 ℃, in 18～22 minutes, carbon potential be raised to CP=0.8 then, at this moment, carried out case-carbonizing 170～190 minutes;
(C) in 8～12 minutes, carbon potential is reduced to 0.7, furnace temperature remains on 870 ℃～890 ℃, and at this moment, case-carbonizing 28～32 minutes was cooled to 100 ℃ afterwards in 45～55 minutes;
(D) in 8～12 minutes, be warming up to 790 ℃～810 ℃, be incubated 45～55 minutes and come out of the stove.
3. according to the method for claim 1 or the accurate hollow plunger of 2 said batch processes; It is characterized in that: the said heat treated concrete grammar of step (3) is: the material after case-carbonizing is handled was oil quenching 15～25 minutes; 75 ℃～85 ℃ of control oil temperature; Clean then, tempering is 170～190 minutes in 175 ℃～185 ℃ tempering furnace.
4. according to the method for the accurate hollow plunger of the said batch process of claim 3, it is characterized in that: the concrete grammar that the said stream of step (3) grinds is: adopt centrifugal finishing machine to remove sharp edge, burr the material after the heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101616011A CN102689138A (en) | 2012-05-23 | 2012-05-23 | Method for batch production of precise hollow plungers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101616011A CN102689138A (en) | 2012-05-23 | 2012-05-23 | Method for batch production of precise hollow plungers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102689138A true CN102689138A (en) | 2012-09-26 |
Family
ID=46854962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101616011A Pending CN102689138A (en) | 2012-05-23 | 2012-05-23 | Method for batch production of precise hollow plungers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102689138A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454328A (en) * | 2014-11-29 | 2015-03-25 | 南京萨伯工业设计研究院有限公司 | Motor plunger component and machining method thereof |
| CN105312847A (en) * | 2014-07-28 | 2016-02-10 | 陕西柴油机重工有限公司 | Machining method of diesel engine spherical pair parts |
| CN111424230A (en) * | 2020-04-30 | 2020-07-17 | 中国航发哈尔滨东安发动机有限公司 | Heat treatment method for superficial carburization of steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265331A (en) * | 1992-01-16 | 1993-11-30 | Caterpillar Inc. | Method of manufacturing a piston for an axial piston fluid translating device |
| CN1286613C (en) * | 2000-03-31 | 2006-11-29 | 沙厄-丹福丝股份有限公司 | Hydraulic piston having enclosed cavity and method for making the same |
| CN101126387A (en) * | 2007-09-07 | 2008-02-20 | 无锡鹰贝机械有限公司 | Production process of high-purity plunger piston |
-
2012
- 2012-05-23 CN CN2012101616011A patent/CN102689138A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265331A (en) * | 1992-01-16 | 1993-11-30 | Caterpillar Inc. | Method of manufacturing a piston for an axial piston fluid translating device |
| CN1286613C (en) * | 2000-03-31 | 2006-11-29 | 沙厄-丹福丝股份有限公司 | Hydraulic piston having enclosed cavity and method for making the same |
| CN101126387A (en) * | 2007-09-07 | 2008-02-20 | 无锡鹰贝机械有限公司 | Production process of high-purity plunger piston |
Non-Patent Citations (1)
| Title |
|---|
| 钱相云: "柱塞泵转子与柱塞加工工艺分析", 《航空精密制造技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312847A (en) * | 2014-07-28 | 2016-02-10 | 陕西柴油机重工有限公司 | Machining method of diesel engine spherical pair parts |
| CN104454328A (en) * | 2014-11-29 | 2015-03-25 | 南京萨伯工业设计研究院有限公司 | Motor plunger component and machining method thereof |
| CN104454328B (en) * | 2014-11-29 | 2017-02-22 | 南京萨伯工业设计研究院有限公司 | Motor plunger component and machining method thereof |
| CN111424230A (en) * | 2020-04-30 | 2020-07-17 | 中国航发哈尔滨东安发动机有限公司 | Heat treatment method for superficial carburization of steel |
| CN111424230B (en) * | 2020-04-30 | 2022-07-08 | 中国航发哈尔滨东安发动机有限公司 | Heat treatment method for superficial carburization of steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101504036B (en) | Manufacture equipment and process for roller bearing spherical roller | |
| CN103506822B (en) | A kind of processing method of advanced High Temperature Resistant Polyimide Composites retainer | |
| CN105414980B (en) | Manufacturing method of slewing bearing | |
| CN103447778A (en) | Machining process of engine crankshafts in heavy trucks | |
| CN101342654A (en) | Machining method of high-precision long and thin round shaft | |
| CN108161377B (en) | A kind of superfine processing method of Cycloidal Wheel | |
| CN110039268B (en) | Processing method of cold-extruded high-wear-resistance bearing outer ring | |
| CN104847779A (en) | Motor rotary shaft and machining method thereof | |
| CN104227345A (en) | Processing method for high-precision thin step shaft and grinding chuck for processing method | |
| KR101184004B1 (en) | Manufacturing method of ball head pin for vessel engine | |
| CN106392521B (en) | A kind of arc cutter production technology | |
| CN103481040A (en) | Crank machining technology | |
| CN103537874A (en) | Adapter machining method | |
| CN103727144A (en) | Coupler for electric bus motor and manufacturing process thereof | |
| CN102310315A (en) | Flat machine cam processing technology | |
| CN104015018B (en) | A kind of manufacture method of slitting circle shear cutter shaft | |
| CN102689138A (en) | Method for batch production of precise hollow plungers | |
| CN107322239A (en) | A kind of processing method of one-way clutch outer ring | |
| CN105750563A (en) | Method for enhancing hard turning circularity of thin-wall annular parts | |
| CN111992999A (en) | Automobile precision stepped shaft cylindrical grinding process | |
| CN104128759A (en) | Lathe spindle machining process beneficial to spindle surface hardness | |
| CN105729077A (en) | Machining method for crankshaft | |
| CN103042363A (en) | Method for manufacturing eccentric bearing | |
| CN103894799A (en) | Shaft workpiece machining technique | |
| CN104057247A (en) | Manufacturing method for precise valve element of hydraulic servo valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120926 |