CN104759840A - Processing technique of remanufactured connecting rod - Google Patents
Processing technique of remanufactured connecting rod Download PDFInfo
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- CN104759840A CN104759840A CN201510109166.1A CN201510109166A CN104759840A CN 104759840 A CN104759840 A CN 104759840A CN 201510109166 A CN201510109166 A CN 201510109166A CN 104759840 A CN104759840 A CN 104759840A
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- connecting rod
- hole
- face
- big end
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- 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
-
- 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
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/04—Connecting rods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention provides a processing technique of a remanufactured connecting rod. The technique comprises the steps of correcting a reference surface, namely, finely grinding the end surface of the connecting rod through a surface grinding machine; pre-processing, namely, boring until the diameter of a large-head hole of the connecting rod reaches the preset size on the basis of the end surface of the connecting rod; repairing for remanufacturing, namely, repairing by nano electric brush plating until the diameter of the large-head end reaches the second preset size on the basis of the end surface of the connecting rod; washing, namely, washing to remove dirt on the surface of the connecting rod, and leveling the end surface of the connecting rod; replacing a copper sleeve, namely, pressing a new small-head hole copper sleeve through a pressure machine on the basis of the end surface of the connecting rod; chamfering, namely, chamfering to form a small-head hole round corner and a large-head hole round corner through a round corner forming knife; processing the small-head hole, namely, perform half fine boring and fine boring for the small-head hole copper sleeve hole until reaching the standard size shown in the specification on the basis of the end surface of the connecting rod; processing the large-head hole, namely, processing until the diameter of the large-head hole reaches the standard size phi on the basis of the end surface of the connecting rod and under the assistance of the small-head hole copper sleeve hole. With the adoption of the technique, the processing hours can be decreased, and the processing precision can be improved.
Description
Technical field
The present invention relates to and manufacture field again, in particular to a kind of processing technology manufacturing connecting rod again.
Background technology
Connecting rod mainly comprises stub end, little head end, connecting rod cap and shaft, and connecting rod cap and shaft are bolted combination.Because connecting rod is forging part, the allowance in hole is comparatively large, can produce larger stress during cutting, causes connecting rod to produce deformation.Therefore, the processing technology of new product connecting rod is divided into roughing and fine finishining usually, conventional machining process route is: 1. milling is large, little head plane-2. are roughly ground plane-3. and are bored, expand, cut with scissors milling side-5., little head bore-4. and expand head bore-6. milling connecting rod cap and mill ream bolting face-9., faying face-8., shaft faying face-7. brill, expand, the pincers worker of reamer bolt hole-10. connects connecting rod cap and heavy boring big end hole-12. fillet of falling big end hole-13., shaft-11. fine grinding is large, little end surface-14. half right boring is large, the right boring of little head bore-15. is large, little head bore-16. pincers worker calibration balance-17. bores little head bore copper sheathing-19. hole circle of falling microcephaly angle-20. half right boring of gonnecting rod body microcephaly oilhole-18. pressure, honing big end hole-the inspection of right boring little head bore copper sheathing hole-21, antirust, warehouse-in.
In sum, new product Machining of Connecting Rod process is a complicated machining process.But connecting rod is the critical component of engine, when its work, little head end is connected with piston by piston pin, the gas pressure acting on piston is passed to the bent axle of connection by stub end, thus realizes the conversion that reciprocating motion of the pistons and crankshaft rotating move.But little head bore and big end hole, except the alternating pressure of bearing piston, are also subject to the bent axle reaction force with stochastic behaviour; So easily there is damage phenomenon in connecting rod small end hole and big end hole.If a large amount of damage connecting rods carries out scrapping process, extreme loss and waste must be caused.In order to reduce the loss of damage connecting rod, most effective method manufactures Repair gene again to damage connecting rod exactly at present, thus the invention provides a kind of processing technology manufacturing connecting rod again.
Summary of the invention
The present invention aims to provide a kind of processing technology manufacturing connecting rod again that can improve machining accuracy.
The invention provides a kind of processing technology manufacturing connecting rod again, this processing technology comprises: correction reference face: the connecting rod end face adopting surface grinding machine fine grinding connecting rod; Preprocessing: with the connecting rod end face of connecting rod for benchmark, diameter to the first pre-set dimension of the big end hole of boring connecting rod; Manufacture reparation again: with the connecting rod end face of connecting rod for benchmark, adopt nano electro-brush plating to repair diameter to the second pre-set dimension of big end hole; Cleaning: the surface contaminants of cleaning connecting rod, and smooth connecting rod end face; Copper sheathing is changed: with connecting rod end face for benchmark, adopts forcing press to be pressed into new little head bore copper sheathing; Chamfer machining: with connecting rod end face for benchmark, adopts fillet forming-tool, the hole circle of falling microcephaly angle and big end hole fillet; Microcephaly's hole machined: with connecting rod end face for benchmark, half right boring, right boring little head bore copper sheathing hole are to standard size φ; Big end hole is processed: with connecting rod end face for benchmark, with little head bore copper sheathing hole for auxiliary base, and the diameter of processing big end hole is to standard size Φ.
Further, the first pre-set dimension is standard size Φ-0.2mm.
Further, the second pre-set dimension is standard size Φ+0.3mm.
Further, big end hole processing comprises: big end hole roughing: with connecting rod end face for benchmark, and with little head bore copper sheathing hole for auxiliary base, the diameter of right boring big end hole is to standard size Φ+0.1mm; Big end hole fine finishining: with connecting rod end face for benchmark, with little head bore copper sheathing hole for auxiliary base, the diameter of honing big end hole is to standard size Φ.
Further, before processing technology is also included in correction reference face, to connecting rod pretreatment, wherein, pretreatment comprises and disassembles connecting rod, cleans, detect and change connecting bolt.
According to the processing technology manufacturing connecting rod more of the present invention, adopt nano electro-brush plating to crank pin end pore reparation, effectively can save technological process, and the allowance that nano electro-brush plating recovery technique possesses little (monolateral 0.15mm), precision is higher, cost is low feature, effectively can reduce allowance and the machining period of crank pin end pore, improve machining accuracy.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the main TV structure schematic diagram manufacturing connecting rod more of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cross-sectional schematic.
Description of reference numerals:
1, big end surface; 2, big end hole; 3, little head bore; 4, little end surface; 5, shaft; 6, connecting rod cap; 7, bolt; 8, nano electro-brush coating; 9, little head bore copper sheathing; 10, copper sheathing hole.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Shown in composition graphs 1 and Fig. 2, according to the processing technology manufacturing connecting rod more of the present invention, comprise the steps:
1, pretreatment, by pincers worker, damage connecting rod is cleaned, disassembles bolt 7, removes little head bore copper sheathing 9 etc., and the damaged condition of inspection damage connecting rod, what judge damage connecting rod manufactures applicability again, to the damage connecting rod meeting again manufacture requirements, new bolt 7 is adopted to connect connecting rod cap 6 and shaft 5.
2, correction reference face: adopt surface grinding machine fine grinding big end end face 1 and little end surface 4, correction coupler processing datum.
3, preprocessing: i.e. nano electro-brush treatment before plating, with the big end surface 1 of connecting rod and and little end surface 4 for benchmark, little head bore 3 adopts false pin auxiliary positioning, right boring crank pin end pore 2 to standard size Φ-0.2mm.
4, manufacture reparation again: namely Brush Plating forms nano electro-brush coating 8, with the big end surface 1 of connecting rod and and little end surface 4 for benchmark, nano electro-brush plating big end hole 2 to standard size Φ+0.3mm.
5, clean, after Brush Plating completes, the surface contaminants manufacturing and repair connecting rod is removed in pincers worker, the big end surface 1 of smooth connecting rod and and little end surface 4.
6, copper sheathing change: adopt forcing press, with big end surface 1 and and little end surface 4 for benchmark, be pressed into new little head bore copper sheathing 9, and extrude copper sheathing hole 10.
7, chamfer machining: adopt fillet forming-tool, with big end surface 1 and and little end surface 4 for benchmark, the hole circle of falling microcephaly angle and big end hole fillet.
8, microcephaly's hole machined: with big end surface 1 and and little end surface 4 for benchmark, half right boring, right boring little head bore copper sheathing hole 10 to standard size φ.
9, big end hole processing: comprise big end hole roughing and big end hole fine finishining; Big end hole roughing adopts boring technique, with big end surface 1 and and little end surface 4 for benchmark, adopt false pin with little head bore copper sheathing hole 10 for auxiliary base, right boring big end hole 2 to standard size Φ+0.1mm; Big end hole fine finishining, adopts honing technique, namely with big end surface 1 and and little end surface 4 for benchmark, adopt false pin with little head bore copper sheathing hole 10 for auxiliary base, honing big end hole 2 to standard size Φ.
10, inspection and antirust treatment: inspection manufactures geometric accuracy and the technical requirement of Machining of Connecting Rod again, is coated with antirust oil antirust treatment to qualified connecting rod, and puts in storage.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
According to the processing technology manufacturing connecting rod more of the present invention, the Machining of Connecting Rod technique that manufactures again based on Nano Brush Electroplating Technique reparation is mainly reflected in process to crank pin end pore, and the allowance that nano electro-brush plating recovery technique possesses little (monolateral 0.15mm), precision is higher, cost is low feature.So the machining period repairing crank pin end pore is less for manufacturing again.Integrated comparative manufacture the processing of connecting rod again and the technological process of new product Machining of Connecting Rod known, then manufacture Machining of Connecting Rod technological process and considerably reduce new product Machining of Connecting Rod technical process; Simultaneously, the processing that connecting rod manufactures again manufactures with nano electro-brush plating again repairs as processing emphasis, based on the good geometric properties that damage connecting rod is intrinsic, machining period is processed far below new product, thus make a kind of processing technology manufacturing connecting rod again possess very superior manufacturability and economy, and provide technical guarantee for the greenization manufacture and recycling economy target realizing connecting rod re-manufacturing technology.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. manufacture a processing technology for connecting rod again, it is characterized in that, described processing technology comprises:
Correction reference face: adopt surface grinding machine to refine the connecting rod end face of described connecting rod;
Preprocessing: with the connecting rod end face of described connecting rod for benchmark, diameter to the first pre-set dimension of the big end hole of connecting rod described in boring;
Manufacture reparation again: with the connecting rod end face of described connecting rod for benchmark, adopt nano electro-brush plating to repair diameter to the second pre-set dimension of big end hole;
Cleaning: the surface contaminants cleaning described connecting rod, and smooth described connecting rod end face;
Copper sheathing is changed: with described connecting rod end face for benchmark, adopts forcing press to be pressed into new little head bore copper sheathing;
Chamfer machining: with described connecting rod end face for benchmark, adopts fillet forming-tool, the hole circle of falling microcephaly angle and big end hole fillet;
Microcephaly's hole machined: with described connecting rod end face for benchmark, half right boring, right boring little head bore copper sheathing hole are to standard size
Big end hole is processed: with described connecting rod end face for benchmark, with little head bore copper sheathing hole for auxiliary base, and the diameter of processing big end hole is to standard size Φ.
2. the processing technology manufacturing connecting rod more according to claim 1, is characterized in that,
Described first pre-set dimension is standard size Φ-0.2mm.
3. the processing technology manufacturing connecting rod more according to claim 1, is characterized in that,
Described second pre-set dimension is standard size Φ+0.3mm.
4. the processing technology manufacturing connecting rod more according to claim 1, is characterized in that, described big end hole processing comprises:
Big end hole roughing: with described connecting rod end face for benchmark, with little head bore copper sheathing hole for auxiliary base, the diameter of right boring big end hole is to standard size Φ+0.1mm;
Big end hole fine finishining: with described connecting rod end face for benchmark, with little head bore copper sheathing hole for auxiliary base, the diameter of honing big end hole is to standard size Φ.
5. the processing technology manufacturing connecting rod more according to claim 1, is characterized in that,
Before described processing technology is also included in correction reference face, to described connecting rod pretreatment, wherein, described pretreatment comprises and disassembles described connecting rod, cleans, detect and change connecting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510109166.1A CN104759840A (en) | 2015-03-12 | 2015-03-12 | Processing technique of remanufactured connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510109166.1A CN104759840A (en) | 2015-03-12 | 2015-03-12 | Processing technique of remanufactured connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104759840A true CN104759840A (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510109166.1A Pending CN104759840A (en) | 2015-03-12 | 2015-03-12 | Processing technique of remanufactured connecting rod |
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| CN (1) | CN104759840A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363341A (en) * | 2016-11-14 | 2017-02-01 | 张家港清研再制造产业研究院有限公司 | Engine connecting rod repairing method |
| CN111515639A (en) * | 2020-04-23 | 2020-08-11 | 宝鸡石油机械有限责任公司 | Processing method of plunger pump connecting rod assembly |
| CN112901641A (en) * | 2021-01-18 | 2021-06-04 | 浙江九龙机械有限公司 | Connecting rod and machining process thereof |
| CN113927469A (en) * | 2021-10-20 | 2022-01-14 | 陕西柴油机重工有限公司 | Method for controlling strengthening shot blasting deformation of inner hole of large end of connecting rod of marine diesel engine |
| CN115008121A (en) * | 2022-06-27 | 2022-09-06 | 广东四会实力连杆有限公司 | Engine connecting rod reworking and remanufacturing method |
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| US5116480A (en) * | 1990-03-26 | 1992-05-26 | The Carolinch Company | Method and apparatus for electrolytic plating |
| CN2767461Y (en) * | 2004-08-04 | 2006-03-29 | 上海工程技术大学 | Nano electro-brush plating test apparatus |
| CN101054704A (en) * | 2007-02-08 | 2007-10-17 | 上海交通大学 | Repair device for semi-automatic electric rush plating of automobile connecting rod large end pore |
| CN101514468A (en) * | 2009-02-19 | 2009-08-26 | 中国人民解放军装甲兵工程学院 | Device and method for inner bore type component brush plating |
| CN103317296A (en) * | 2013-06-06 | 2013-09-25 | 潍柴动力(潍坊)再制造有限公司 | Engine connection rod remanufacturing method |
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Patent Citations (5)
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| US5116480A (en) * | 1990-03-26 | 1992-05-26 | The Carolinch Company | Method and apparatus for electrolytic plating |
| CN2767461Y (en) * | 2004-08-04 | 2006-03-29 | 上海工程技术大学 | Nano electro-brush plating test apparatus |
| CN101054704A (en) * | 2007-02-08 | 2007-10-17 | 上海交通大学 | Repair device for semi-automatic electric rush plating of automobile connecting rod large end pore |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363341A (en) * | 2016-11-14 | 2017-02-01 | 张家港清研再制造产业研究院有限公司 | Engine connecting rod repairing method |
| CN106363341B (en) * | 2016-11-14 | 2019-01-01 | 张家港清研再制造产业研究院有限公司 | A kind of engine link restorative procedure |
| CN111515639A (en) * | 2020-04-23 | 2020-08-11 | 宝鸡石油机械有限责任公司 | Processing method of plunger pump connecting rod assembly |
| CN111515639B (en) * | 2020-04-23 | 2021-07-13 | 宝鸡石油机械有限责任公司 | Processing method of plunger pump connecting rod assembly |
| CN112901641A (en) * | 2021-01-18 | 2021-06-04 | 浙江九龙机械有限公司 | Connecting rod and machining process thereof |
| CN112901641B (en) * | 2021-01-18 | 2022-07-12 | 浙江九龙机械有限公司 | Connecting rod and machining process thereof |
| CN113927469A (en) * | 2021-10-20 | 2022-01-14 | 陕西柴油机重工有限公司 | Method for controlling strengthening shot blasting deformation of inner hole of large end of connecting rod of marine diesel engine |
| CN113927469B (en) * | 2021-10-20 | 2024-05-24 | 陕西柴油机重工有限公司 | Method for controlling strengthening shot peening deformation of large end inner hole of marine diesel engine connecting rod |
| CN115008121A (en) * | 2022-06-27 | 2022-09-06 | 广东四会实力连杆有限公司 | Engine connecting rod reworking and remanufacturing method |
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Application publication date: 20150708 |
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