CN103706719B - A kind of cutter for plunger, slippery boots assembly closing in and closing method - Google Patents
A kind of cutter for plunger, slippery boots assembly closing in and closing method Download PDFInfo
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- CN103706719B CN103706719B CN201310671045.7A CN201310671045A CN103706719B CN 103706719 B CN103706719 B CN 103706719B CN 201310671045 A CN201310671045 A CN 201310671045A CN 103706719 B CN103706719 B CN 103706719B
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- closing
- plunger
- cutter
- slippery boots
- boots assembly
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Abstract
The present invention is a kind of cutter for plunger, slippery boots assembly closing in and closing method, this cutter comprises a cutterhead, the cutter head (4) of isosceles trapezoid that in the middle part of cutterhead to be one section of central cross-section be in the front end of tool rest (2), the circular arc (16) of two waists of isosceles trapezoid to be radius be 1mm ~ 10mm, the height of described isosceles trapezoid is 0.8mm ~ 10.5mm.This closing method is first by plunger (9), retaining ring (10) and slippery boots assembly (11) are combined and are carried out coordinating and grinding, then be arranged on lathe with soft three-jaw (12) clamping slippery boots assembly (11), plunger (9) is held out against with top (13), finally use plunger, close up in the closing in position (15) that the circular arc position (16) of the cutter head (4) of slippery boots assembly closing in cutter leans against slippery boots assembly (11), compared with prior art, technical solution of the present invention makes engine fuel adjuster plunger, slippery boots assembly reaches the gap of designing requirement after closing up on lathe, pendulum angle, the indexs such as closing in position flawless.
Description
Technical field
The present invention is a kind of cutter for plunger, slippery boots assembly closing in and closing method, belongs to material molding technology field.
Background technology
It is all adopt manual method of impacting to close up that existing plunger, slippery boots assembly close up, and needs to make seaming tool, and during closing in, pincers worker adopts the method for knocking to make part closing in position produce distortion, reaches the object of closing in.This closing method process velocity is slow, and the process-cycle is long, and part closing in precision is low, and qualification rate is also lower.
The closing in of current aero-engine fuel regulator plunger, slippery boots assembly is not suitable for adopting said method, because the production of the type part reaches certain batch, has higher requirements to the element precision after closing up.
Summary of the invention
The present invention designs for above-mentioned the deficiencies in the prior art just and provides a kind of cutter for plunger, slippery boots assembly closing in and closing method, its objective is the closing in processing realizing mechanical system, enhance productivity, the qualification rate of machining accuracy and product.
The object of the invention is to be achieved through the following technical solutions:
Technical solution of the present invention provides a kind of cutter closed up for plunger, slippery boots assembly, and this cutter comprises:
A cutterhead, the middle part of cutterhead is the tool rest (2) of a plate-like, the rear end of tool rest (2) is a connecting axle (3) through the centre bore of cutter hub (1), be matched in clearance between connecting axle (3) and centre bore, after assembling, the circle of tool rest (2) is beated and is not more than 0.05mm, cutter hub (1) is connected with lathe saddle, and cutter hub (1) appearance and size should design according to lathe saddle size;
The cutter head (4) of isosceles trapezoid that to be one section of central cross-section be in the front end of tool rest (2), the bottom surface of cutter head (4) overlaps with the lower surface of tool rest (2), the circular arc (16) of two waists of described isosceles trapezoid to be radius be 1mm ~ 10mm, the height of described isosceles trapezoid is 0.8mm ~ 10.5mm.
The hardness of cutter head (4) is 55 ~ 60HRC, roughness Ra 0.8.
On tool rest (2) front and rear end, the surrounding of centre bore is processed with annular groove (5), the diameter of annular groove (5) is 18mm ~ 22mm, the degree of depth is 2.5mm ~ 4.5mm, and the interior filling radius of annular groove (5) is the steel ball (6) of Φ 3 ~ Φ 5.
Present invention also offers a kind of above-mentioned plunger, slippery boots assembly close up cutter close up method, the hardness at described plunger, slippery boots assembly closing in position is 28 ~ 35HRC, it is characterized in that: steps of the method are:
Plunger (9), retaining ring (10) and slippery boots assembly (11) are combined and are carried out coordinating and grinding by step 1;
The sub-assembly of plunger (9), retaining ring (10) and slippery boots assembly (11) is arranged on lathe with soft three-jaw (12) clamping slippery boots assembly (11) by step 2, plunger (9) is held out against with top (13), make the center line of plunger (9) (14) through the center of slippery boots assembly (11) interior ball and endoporus, clamping requires firmly, not to rotate, again can not by the distortion of part folder;
Close up in the closing in position (15) that the circular arc position (16) of the cutter head (4) of step 3 plunger, slippery boots assembly closing in cutter leans against slippery boots assembly (11), tool rest (2) is vertical with the center line (14) of plunger (9), and tool rest (2) cylindrical can not contact part.Cutter laterally should want feed by length feed again, makes piston shoes closing in position distortions by the strength of cutter roll extrusion, is held tightly by the bulb of plunger (9), reaches the object of closing in.
In closing in process, it is suitable that the piston shoes material first closed up and matrix hardness are selected, and should have certain hardness, ensures to close up rear closing in position firmly, substantially indeformable.Again can not be too hard, certain plasticity being had, guarantee to close up to requiring shape smoothly, and closing in position can not occur crackle.
Before closing up, pairing processing, testing are carried out to ball in the piston shoes that will close up and plunger ectosphere, make it spherical and coincide, and detect accordingly, to ensure closing in quality;
During closing in, by the strength of cutter roll extrusion, the closing in position (15) of slippery boots assembly is out of shape, the structure of cutter head (4) should bear cross force, can bear longitudinal force again, and force part shape just can process qualified products.
The advantage of technical solution of the present invention makes engine fuel adjuster plunger, slippery boots assembly on lathe, carry out machinery to close up, and can reach the requirement such as gap, pendulum angle, closing in position flawless of design drawing requirement.Solve the shortcoming of traditional closing in mode.
Accompanying drawing explanation
Fig. 1 plunger piston slippery boots combining structure schematic diagram
Fig. 2 is the structural representation of cutter of the present invention
Fig. 3 is the scheme of installation of plunger piston slippery boots sub-assembly on lathe
Fig. 4 is the closing in schematic diagram of plunger piston slippery boots sub-assembly on lathe
Detailed description of the invention
Below with reference to drawings and Examples, technical solution of the present invention is further described:
Shown in accompanying drawing 2, the cutter that this kind closes up for plunger, slippery boots assembly, is characterized in that: this cutter comprises:
A cutterhead, the middle part of cutterhead is the tool rest 2 of a plate-like, and the rear end of tool rest 2 is the connecting axles 3 through the centre bore of cutter hub 1, and be matched in clearance between connecting axle 3 and centre bore, cutter hub 1 is connected with lathe saddle;
The cutter head 4 of isosceles trapezoid that to be one section of central cross-sections be in the front end of tool rest 2, the bottom surface of cutter head 4 overlaps with the lower surface of tool rest 2, and the circular arc 16 of two waists of described isosceles trapezoid to be radius be 1mm ~ 10mm, the height of described isosceles trapezoid is 0.8mm ~ 10.5mm.
The hardness of cutter head 4 is 55 ~ 60HRC, roughness Ra 0.8.
On tool rest 2 front and rear end, the surrounding of centre bore is processed with annular groove 5, and the diameter of annular groove 5 is 18mm ~ 22mm, and the degree of depth is 2.5mm ~ 4.5mm, and in annular groove 5, filling radius is the steel ball 6 of Φ 3 ~ Φ 5.
This cutter is adopted to carry out
The step of the method closed up with the cutter that above-mentioned plunger, slippery boots assembly close up is:
Described in step 1, the hardness at plunger, slippery boots assembly closing in position is 28 ~ 35HRC, plunger 9, retaining ring 10 and slippery boots assembly 11 are combined and carries out coordinating and grinding, specific practice is that in the slippery boots assembly 11 that will close up, ball and plunger 9 ectosphere carry out grinding, grind after stain inspection, stained area is not less than 80%;
The sub-assembly of plunger 9, retaining ring 10 and slippery boots assembly 11 is arranged on lathe and clamps slippery boots assembly 11 with soft three-jaw 12 by step 2, plunger 9 is held out against with top 13, should be able to be freely movable in slippery boots assembly 11 after plunger 9 holds out against, the center line 14 of plunger 9 is made to pass the center of ball and endoporus in slippery boots assembly 11, clamping requires firmly, not to rotate, again can not by the distortion of part folder;
Close up in the closing in position 15 that the circular arc position 16 of the cutter head 4 of step 3 plunger, slippery boots assembly closing in cutter leans against slippery boots assembly 11, the radius at circular arc position 16 can be selected as required within the scope of 1mm ~ 10mm, tool rest 2 is vertical with the center line 14 of plunger 9, during closing in, cutter should length feed, laterally want feed again, make piston shoes closing in position distortions by the strength of cutter roll extrusion, the bulb of plunger 9 is held tightly, reach the object of closing in.
Test with measuring tool after closing in completes, check whether and reach design drawing closing in requirement.These indexes comprise between closing in back-plunger, piston shoes will certain gap, and will go slick; Closing in back-plunger should be able to along the smooth operation of axis any direction to certain angle in piston shoes, without unsmooth and creak sound; Closing in place four times of lens examination flawlesses; Should carry out pulling-out force test after closing in, pulling-out force is not less than setting.
Compared with prior art, technical solution of the present invention makes engine fuel adjuster plunger, slippery boots assembly reach the index such as gap, pendulum angle, closing in position flawless of designing requirement after closing up on lathe, solve the indeterminable problem of traditional closing in mode, can enhance productivity, significantly improve machining accuracy, part qualification rate also improves greatly, has larger actual application value and economic benefit.
Claims (1)
1., for the cutter that plunger, slippery boots assembly close up, it is characterized in that: this cutter comprises:
A cutterhead, the middle part of cutterhead is the tool rest (2) of a plate-like, the rear end of tool rest (2) is a connecting axle (3) through the centre bore of cutter hub (1), be matched in clearance between connecting axle (3) and centre bore, cutter hub (1) is connected with lathe saddle;
The cutter head (4) of isosceles trapezoid that to be one section of central cross-section be in the front end of tool rest (2), the bottom surface of cutter head (4) overlaps with the lower surface of tool rest (2), the circular arc (16) of two waists of described isosceles trapezoid to be radius be 1mm ~ 10mm, the height of described isosceles trapezoid is 0.8mm ~ 10.5mm;
The hardness of cutter head (4) is 55 ~ 60HRC, roughness Ra 0.8;
On tool rest (2) front and rear end, the surrounding of centre bore is processed with annular groove (5), the diameter of annular groove (5) is 18mm ~ 22mm, the degree of depth is 2.5mm ~ 4.5mm, and the interior filling radius of annular groove (5) is the steel ball (6) of Φ 3 ~ Φ 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201310671045.7A CN103706719B (en) | 2013-12-10 | 2013-12-10 | A kind of cutter for plunger, slippery boots assembly closing in and closing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201310671045.7A CN103706719B (en) | 2013-12-10 | 2013-12-10 | A kind of cutter for plunger, slippery boots assembly closing in and closing method |
Publications (2)
Publication Number | Publication Date |
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CN103706719A CN103706719A (en) | 2014-04-09 |
CN103706719B true CN103706719B (en) | 2016-03-02 |
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CN201310671045.7A Expired - Fee Related CN103706719B (en) | 2013-12-10 | 2013-12-10 | A kind of cutter for plunger, slippery boots assembly closing in and closing method |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106001286B (en) * | 2016-05-17 | 2017-11-03 | 江苏远业液压机械有限公司 | A kind of anti-package plunger bottling technique |
CN105817543B (en) * | 2016-05-19 | 2018-07-03 | 无锡威孚精密机械制造有限责任公司 | A kind of seaming tool of plunger assembly |
CN109623323B (en) * | 2018-12-28 | 2020-10-09 | 武汉泛洲中越合金有限公司 | Assembly system and assembly method of sliding shoe and plunger |
CN109794537B (en) * | 2019-01-11 | 2021-04-02 | 南京航空航天大学 | Three-spinning-wheel spinning clamp suitable for small-diameter plunger assembly and operation process thereof |
CN110919291A (en) * | 2019-12-03 | 2020-03-27 | 中国航空工业集团公司北京航空精密机械研究所 | Rolling loosening device for spherical hinge structure on plunger pump and rolling loosening method thereof |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4034766A1 (en) * | 1990-11-02 | 1992-05-07 | Mann Und Kortmann Gmbh | Assembly of shoes onto pistons of axial piston pump - involves closing shoe cup onto ball end in one operation by pressure of orbital rollers |
CN2110724U (en) * | 1991-09-18 | 1992-07-22 | 贵阳航空液压件厂 | Closing-up device for plunger assembly |
CN202498339U (en) * | 2011-07-20 | 2012-10-24 | 龙工(上海)桥箱有限公司 | Tool for assembling plunger and sliding shoe of axial plunger pump |
CN103143891B (en) * | 2013-03-06 | 2016-01-20 | 北京工业大学 | For assembly tooling and the assembly method of water pressure plunger pump plunger piston slippery boots assembly |
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Address after: 102200 No. 1 Li Xiang Road, Changping District science and Technology Park, Beijing Patentee after: CHINA AEROSPACE BEIJING HANGKE ENGINE CONTROL SYSTEM TECHNOLOGY Co.,Ltd. Address before: 102200 No. 1 Li Xiang Road, Changping District science and Technology Park, Beijing Patentee before: BEIJING HANGKE ENGINE CONTROL SYSTEM SCIENCE & TECHNOLOGY Co.,Ltd. |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20191210 |