CN103447903B - The reproducing method of engine cylinder block assembly main bearing hole - Google Patents
The reproducing method of engine cylinder block assembly main bearing hole Download PDFInfo
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- CN103447903B CN103447903B CN201310397807.9A CN201310397807A CN103447903B CN 103447903 B CN103447903 B CN 103447903B CN 201310397807 A CN201310397807 A CN 201310397807A CN 103447903 B CN103447903 B CN 103447903B
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- main bearing
- cylinder block
- faying face
- bearing seat
- bearing hole
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Abstract
The invention discloses a kind of reproducing method of engine cylinder block assembly main bearing hole, belong to engine remanufacturing technical field, with cylinder block main bearing seat faying face for benchmark, cylinder block main bearing seat faying face is removed the processing capacity of 0.02mm ~ 0.10mm, and the Geometrical Tolerance Principle of described cylinder block main bearing seat faying face will be ensured; With crankcase main bearing seat faying face for benchmark, crankcase main bearing seat faying face is removed the processing capacity of 0.02mm ~ 0.10mm; With Main bearing bolt, cylinder block and crankcase are assembled together, form cylinder body assembly; Honing process is carried out to each main bearing hole of engine cylinder block assembly, requires that the honing of each main bearing hole is carried out simultaneously, to ensure every technological requirement of engine cylinder block assembly main bearing hole.Present invention process is simple, there is not the potential risk of brush plating mode, achieves manufacturing again the engine cylinder block assembly that there is main bearing hole dimension overproof.
Description
Technical field
The invention belongs to engine remanufacturing technical field, particularly relate to a kind of reproducing method of engine cylinder block assembly main bearing hole.
Background technology
Engine remanufacturing had both been different from general engine manufacture, also the engine overhaul of non-generic, but the maintenance mode that brand-new.Engine remanufacturing is that the engine entering certain life cycle is reverted to the process of new machine according to manufacturing process again.
Main bearing hole is the keypoint part of engine cylinder block assembly, and the dimensional accuracy in hole, circularity, cylindricity, axiality and surface roughness requirements are all very high, affect the performance of whole engine.Engine cylinder block assembly main bearing hole dimension overproof is the common defects that old engine cylinder block exists, this defect is not repaired, in cylinder block by the use after manufacturing again, the defect such as there will be that engine oil pressure is low, the oil film of main box and crank spindle collar can not be set up, there will be in operation and causes engine to scrap because to change watt.Main bearing hole required precision again due to engine cylinder block assembly is high, association size is many, the improper meeting of reproducing method causes relative dimensions overproof and scraps, thus main bearing hole create one of technical barrier that engine cylinder block assembly must capture in manufacture process more again.
At present, the reproducing method of engine cylinder block assembly main bearing hole mainly adopts Way by Brush Plating Technique, reprocesses to requiring size after namely brushing one deck alloy-layer on the cylinder body assembly main bearing hole inwall of dimension overproof.But adopt brush plating mode to recover main bearing hole size, by the restriction that coating and bulk junction are made a concerted effort, in following process and use procedure, easily occur the phenomenon that coating comes off, there is major hidden danger; And brush-plating technique is complicated, especially for this large complicated part of engine cylinder block, be difficult to realize industrialized mass production.
Summary of the invention
Technical problem to be solved by this invention is: the reproducing method providing a kind of engine cylinder block assembly main bearing hole, not only technique is simple, and manufacturing again the engine cylinder block assembly that there is main bearing hole dimension overproof can be realized, be easy to realize industrialized mass production.
For solving the problems of the technologies described above, technical scheme of the present invention is: the reproducing method of engine cylinder block assembly main bearing hole, comprises the following steps:
(1) cylinder block main bearing seat faying face processing: with cylinder block main bearing seat faying face for benchmark, cylinder block main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity of 0.02mm ~ 0.10mm, and the Geometrical Tolerance Principle of described cylinder block main bearing seat faying face will be ensured;
(2) crankcase main bearing seat faying face processing: with crankcase main bearing seat faying face for benchmark, crankcase main bearing seat faying face adopts described surface grinding machine and frock grinding remove the processing capacity of 0.02mm ~ 0.10mm;
(3) assemble: with Main bearing bolt, cylinder block and crankcase are assembled together, form cylinder body assembly;
(4) engine cylinder block assembly main bearing hole honing: carry out Honing process to each main bearing hole of engine cylinder block assembly, requires that the honing of each main bearing hole is carried out simultaneously, to ensure every technological requirement of engine cylinder block assembly main bearing hole.
Improve as one, described frock comprises frock body, described frock body is provided with cylinder block height his-and-hers watches post and crankcase height his-and-hers watches post, described frock body is provided with four magnetic fine-adjusting units, described magnetic fine-adjusting unit one end is provided with has magnetic and magnet base with presence or absence of adjustable magnetic, described magnet base is adsorbed on described frock body, and the other end is provided with height fine-adjustment; Described frock body is also provided with the T-slot for installing clamping element that several be arranged in parallel, described clamping element comprises the porose pressing plate of bolt, nut and Intermediate Gray.
As further improvement, in step (3), by the Main bearing bolt assembling moment of engine cylinder block assembly, cylinder block and crankcase are assembled according to assemble sequence.
After have employed technique scheme, the invention has the beneficial effects as follows:
1, owing to manufacturing processing in the mode removing part noumenon material again to engine cylinder block assembly main bearing hole in step (4), manufacture again successfully, main bearing hole inwall is part noumenon, there is not the potential risk of brush plating mode, achieve manufacturing again the engine cylinder block assembly that there is main bearing hole dimension overproof; And technique is simple, is easy to realize industrialized mass production.
2, owing to all adopting the process that this is processed plane as benchmark with plane in step (1) and step (2), ensure that minimizing of removal amount, thus ensure that the change of other relative dimensions can meet the performance requirement of part entirety; Because the removal amount of all positions of part only has 0 ~ 0.10mm, therefore this processing mode can be ignored the impact of part strength.
3, in the mode of surface grinding machine grinding, improve working (machining) efficiency, and significantly reduce manufacturing cost again, can mass production be adapted to.
4, finally manufacture main bearing hole again in the mode of all main bearing holes honing simultaneously, fully can ensure main bearing hole aperture size, roughness and other form and position tolerance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the frock that the embodiment of the present invention provides;
Fig. 2 is the top view of Fig. 1;
In figure: 1, frock body, 2, cylinder block height his-and-hers watches post, 3, crankcase height his-and-hers watches post, 4, magnetic fine-adjusting unit, 5, T-slot, 6, cylinder block.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Cylinder block main bearing seat faying face refers to plane cylinder block being combined with crankcase and forming main bearing hole, and crankcase main bearing seat faying face refers to plane crankcase being combined with cylinder block and forming main bearing hole.
The reproducing method of engine cylinder block assembly main bearing hole, comprises the following steps:
(1) cylinder block main bearing seat faying face processing: with cylinder block main bearing seat faying face for benchmark, cylinder block main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity (can adjusting according to different engine products) of 0.02mm ~ 0.10mm, and the Geometrical Tolerance Principle of cylinder block main bearing seat faying face will be ensured;
Preferably, as Fig. 1 and Fig. 2 jointly shown in, this frock comprises frock body 1, frock body 1 is a flat board, frock body 1 is provided with cylinder block height his-and-hers watches post 2 and crankcase height his-and-hers watches post 3, frock body 1 is provided with four magnetic fine-adjusting units 4, magnetic fine-adjusting unit 4 one end is provided with has magnetic and magnet base with presence or absence of adjustable magnetic, magnet base is adsorbed on frock body 1, magnet base can adjust its position on frock body 1 according to the difference of workpiece to be processed, this magnet base comprises permanent magnet, soft magnetic materials and rotary switch, pass through rotary switch, rotate permanent magnet, thus control soft magnetic materials magnetic with or without, be well known to those skilled in the art, do not repeat them here, the other end is provided with height fine-adjustment, adjusting range ± 0.5mm, and height fine-adjustment realizes by fine setting screw rod etc., frock body 1 is also provided with the T-slot 5 for installing clamping element that several be arranged in parallel, clamping element comprises the porose pressing plate of bolt, nut and Intermediate Gray.
During grinding cylinder block main bearing seat faying face, according to cylinder block shape, four positions are selected to be fixed by magnetic fine-adjusting unit 4; Two bolts are arranged in T-slot 5; Cylinder block 6 is placed on four magnetic fine-adjusting units 4, cylinder block main bearing seat faying face upward, keep cylinder block 6 two ends apart from nearest magnetic fine-adjusting unit 4 apart from roughly the same, two bolts pass respectively from two of cylinder block 6 cylinder holes, ensure that the height of each bolt is all lower than the height of cylinder block main bearing seat faying face simultaneously; Microheight gauge is placed on frock body 1, with cylinder block height his-and-hers watches post 2 be benchmark by microheight gauge to good zero-bit; Adopt four-point method that cylinder block main bearing seat faying face is adjusted to level, namely choose respectively a bit on four angles of cylinder block main bearing seat faying face, utilize microheight gauge, spin magnetization fine-adjusting unit 4, sustained height is adjusted to by 4 that select, control errors, at 0.01mm, takes off microheight gauge; By the hole in the middle of pressing plate through bolt, fastening nut, the two ends of pressing plate are pressed in bolt respectively through on two main bearing holes of cylinder block 6 cylinder holes both sides, cylinder block 6 are pressed on frock body 1; Start surface grinding machine, according to the difference of the cylinder block main bearing hole degree of wear, cylinder block main bearing seat faying face removes 0.02 ~ 0.10mm;
(2) crankcase main bearing seat faying face processing: with crankcase main bearing seat faying face for benchmark, crankcase main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity (can adjusting according to different engine products) of 0.02mm ~ 0.10mm;
Preferably, during grinding crankcase main bearing seat faying face, still adopt frock as depicted in figs. 1 and 2, it is substantially identical with the method for grinding cylinder block main bearing seat faying face, its difference is, adopt four-point method when crankcase main bearing seat faying face is adjusted to level, be with crankcase height his-and-hers watches post 3 for benchmark by microheight gauge to zero-bit;
(3) assemble: by the Main bearing bolt assembling moment of engine cylinder block assembly, cylinder block and crankcase are assembled according to assemble sequence, form cylinder body assembly;
(4) engine cylinder block assembly main bearing hole honing: carry out Honing process to each main bearing hole of engine cylinder block assembly, requires that the honing of each main bearing hole is carried out simultaneously, to ensure every technological requirement of engine cylinder block assembly main bearing hole.
Embodiment one
The reproducing method of engine cylinder block assembly main bearing hole, comprises the following steps:
(1) cylinder block main bearing seat faying face processing: with cylinder block main bearing seat faying face for benchmark, cylinder block main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity of 0.02mm, and the Geometrical Tolerance Principle of cylinder block main bearing seat faying face will be ensured;
(2) crankcase main bearing seat faying face processing: with crankcase main bearing seat faying face for benchmark, crankcase main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity of 0.02mm;
(3) assemble: by the Main bearing bolt assembling moment of engine cylinder block assembly, cylinder block and crankcase are assembled according to assemble sequence, form cylinder body assembly;
(4) engine cylinder block assembly main bearing hole honing: carry out Honing process to each main bearing hole of engine cylinder block assembly, requires that the honing of each main bearing hole is carried out simultaneously, to ensure every technological requirement of engine cylinder block assembly main bearing hole.
Embodiment two
The reproducing method of engine cylinder block assembly main bearing hole, comprises the following steps:
(1) cylinder block main bearing seat faying face processing: with cylinder block main bearing seat faying face for benchmark, cylinder block main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity of 0.05mm, and the Geometrical Tolerance Principle of cylinder block main bearing seat faying face will be ensured;
(2) crankcase main bearing seat faying face processing: with crankcase main bearing seat faying face for benchmark, crankcase main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity of 0.05mm;
(3) assemble: by the Main bearing bolt assembling moment of engine cylinder block assembly, cylinder block and crankcase are assembled according to assemble sequence, form cylinder body assembly;
(4) engine cylinder block assembly main bearing hole honing: carry out Honing process to each main bearing hole of engine cylinder block assembly, requires that the honing of each main bearing hole is carried out simultaneously, to ensure every technological requirement of engine cylinder block assembly main bearing hole.
Embodiment three
The reproducing method of engine cylinder block assembly main bearing hole, comprises the following steps:
(1) cylinder block main bearing seat faying face processing: with cylinder block main bearing seat faying face for benchmark, cylinder block main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity of 0.10mm, and the Geometrical Tolerance Principle of cylinder block main bearing seat faying face will be ensured;
(2) crankcase main bearing seat faying face processing: with crankcase main bearing seat faying face for benchmark, crankcase main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity of 0.10mm;
(3) assemble: by the Main bearing bolt assembling moment of engine cylinder block assembly, cylinder block and crankcase are assembled according to assemble sequence, form cylinder body assembly;
(4) engine cylinder block assembly main bearing hole honing: carry out Honing process to each main bearing hole of engine cylinder block assembly, requires that the honing of each main bearing hole is carried out simultaneously, to ensure every technological requirement of engine cylinder block assembly main bearing hole.
The reproducing method of the engine cylinder block assembly main bearing hole that the embodiment of the present invention provides, manufacture again successfully, main bearing hole inwall is part noumenon, there is not the potential risk of brush plating mode, achieves manufacturing again the engine cylinder block assembly that there is main bearing hole dimension overproof; And technique is simple, is easy to realize industrialized mass production.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. the reproducing method of engine cylinder block assembly main bearing hole, is characterized in that, comprises the following steps:
(1) cylinder block main bearing seat faying face processing: with cylinder block main bearing seat faying face for benchmark, cylinder block main bearing seat faying face adopts surface grinding machine and frock grinding remove the processing capacity of 0.02mm ~ 0.10mm, and the Geometrical Tolerance Principle of described cylinder block main bearing seat faying face will be ensured; Described frock comprises frock body, described frock body is provided with cylinder block height his-and-hers watches post and crankcase height his-and-hers watches post, described frock body is provided with four magnetic fine-adjusting units, described magnetic fine-adjusting unit one end is provided with has magnetic and magnet base with presence or absence of adjustable magnetic, described magnet base is adsorbed on described frock body, and the other end is provided with height fine-adjustment; Described frock body is also provided with the T-slot for installing clamping element that several be arranged in parallel, described clamping element comprises the porose pressing plate of bolt, nut and Intermediate Gray;
(2) crankcase main bearing seat faying face processing: with crankcase main bearing seat faying face for benchmark, crankcase main bearing seat faying face adopts described surface grinding machine and frock grinding remove the processing capacity of 0.02mm ~ 0.10mm;
(3) assemble: with Main bearing bolt, cylinder block and crankcase are assembled together, form cylinder body assembly;
(4) engine cylinder block assembly main bearing hole honing: carry out Honing process to each main bearing hole of engine cylinder block assembly, requires that the honing of each main bearing hole is carried out simultaneously, to ensure every technological requirement of engine cylinder block assembly main bearing hole.
2. the reproducing method of engine cylinder block assembly main bearing hole according to claim 1, it is characterized in that, in step (3), by the Main bearing bolt assembling moment of engine cylinder block assembly, cylinder block and crankcase are assembled according to assemble sequence.
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| CN201310397807.9A CN103447903B (en) | 2013-09-04 | 2013-09-04 | The reproducing method of engine cylinder block assembly main bearing hole |
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| CN201310397807.9A CN103447903B (en) | 2013-09-04 | 2013-09-04 | The reproducing method of engine cylinder block assembly main bearing hole |
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| CN103447903B true CN103447903B (en) | 2015-09-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007063567A1 (en) * | 2007-12-31 | 2009-07-09 | Daimler Ag | Non-cylindrical drilling surface producing method for use during processing of cylindrical piston bore in cylinder block of internal combustion engine, involves performing position honing and uniformly smoothening surface |
| CN101581260A (en) * | 2009-04-10 | 2009-11-18 | 南车戚墅堰机车有限公司 | Process method for overhauling main bearing hole of diesel engine cylinder block |
| CN101633054A (en) * | 2008-07-24 | 2010-01-27 | 广西玉柴机器股份有限公司 | Method and device for finely boring main shaft holes of air cylinder body |
| CN101811281A (en) * | 2010-04-16 | 2010-08-25 | 上海交通大学 | Horizontal honing core shaft device for main bearing hole of cylinder |
| CN102240961A (en) * | 2010-03-05 | 2011-11-16 | 纳格尔机械及工具制造厂有限责任公司 | Method and apparatus for finish machining crankshaft bearing borehole |
-
2013
- 2013-09-04 CN CN201310397807.9A patent/CN103447903B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007063567A1 (en) * | 2007-12-31 | 2009-07-09 | Daimler Ag | Non-cylindrical drilling surface producing method for use during processing of cylindrical piston bore in cylinder block of internal combustion engine, involves performing position honing and uniformly smoothening surface |
| CN101633054A (en) * | 2008-07-24 | 2010-01-27 | 广西玉柴机器股份有限公司 | Method and device for finely boring main shaft holes of air cylinder body |
| CN101581260A (en) * | 2009-04-10 | 2009-11-18 | 南车戚墅堰机车有限公司 | Process method for overhauling main bearing hole of diesel engine cylinder block |
| CN102240961A (en) * | 2010-03-05 | 2011-11-16 | 纳格尔机械及工具制造厂有限责任公司 | Method and apparatus for finish machining crankshaft bearing borehole |
| CN101811281A (en) * | 2010-04-16 | 2010-08-25 | 上海交通大学 | Horizontal honing core shaft device for main bearing hole of cylinder |
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Effective date of registration: 20210310 Address after: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee after: Weichai Power Co.,Ltd. Address before: No. 197, Fushou East Street, high tech Development Zone, Weifang City, Shandong Province, 261061 Patentee before: WEICHAI POWER (WEIFANG) REMANUFACTURING Co.,Ltd. |
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