CN101758360B - Repairing and processing method of main bearing hole on stand of diesel engine for ship - Google Patents
Repairing and processing method of main bearing hole on stand of diesel engine for ship Download PDFInfo
- Publication number
- CN101758360B CN101758360B CN200910200340A CN200910200340A CN101758360B CN 101758360 B CN101758360 B CN 101758360B CN 200910200340 A CN200910200340 A CN 200910200340A CN 200910200340 A CN200910200340 A CN 200910200340A CN 101758360 B CN101758360 B CN 101758360B
- Authority
- CN
- China
- Prior art keywords
- main bearing
- hole
- main
- repairing
- processing method
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a repairing and processing method of a main bearing hole on a stand of a diesel engine for a ship, comprising the following steps of: (1) determining to mill a inclined plane with the size equal to a main bearing cover according to the properties, size and depth of a defect and then fixing the main bearing seat and the main bearing cover; (2) adjusting and compressing the pumped stand on a machine tool and additionally installing a dial indicator on the accessory of the machine tool; (3) correcting the circularity of an inner hole of the bearing seat to find out the circle center of the original hole; (4) shifting the center of a boring cutter of the machine tool to the main bearing cover and using the center of the boring cutter as the zero position of a boring hole of the machine tool; and (5) boring a hole according to the measured hole diameter of the main bearing hole so that the repairing work of the main bearing seat is finished. The repairing and processing method of the main bearing hole on the stand of the diesel engine for the ship can reduce the abandonment losses caused by the defects of castings, save the cost and ensure the size and the roughness requirement of a part drawing so as to completely ensure the quality of a product.
Description
Technical field
The present invention relates to marine diesel, the patch work when specially referring to frame of marine diesel engine and having defective specifically is a kind of repairing and processing method to main bearing hole.
Background technology
Because the casting ability is limit at present; Defectives such as part blank pore can occur, is mingled with in casting cycle, sand holes, shrinkage porosite; In two semicircle orifice process, usually can appear at after the endoporus fine finishining, find that the headkerchief bore area has fault in material; In order to reduce the influence of fault in material, must reprocess processing to this headkerchief to serviceability.One's fever has abated along with present global ship city, and the diesel engine order reduces, and hands over the machine situation increasingly serious, and this just requires us when stressing to practice thrift cost, guarantees the stable of product quality with the processing method of innovating.
With big marine diesel engine support main bearing hole is example, and this main bearing hole is made up of main bearing seat and main beating cap, the less and fineness requirement high again (Ra1.6) of the dimensional tolerance in this hole.But because the casting problem, the main beating cap bore area after fine finishining the time regular meeting find some defectives.Main bearing hole is used for installing bent axle, is bearing very big power, if main beating cap bore area defectiveness brings hidden danger will for the normal operation of whole diesel engine.Because the fine finishining of former main bearing hole is reprocessed this main beating cap with existing processing method, the roughness ratio that does not destroy main bearing seat again is difficult, and this solves this type of problem with regard to requiring us must seek a kind of effective more processing method with innovation.
Summary of the invention
The object of the present invention is to provide a kind of new method of factory ship that be used to reprocess with first circular hole of diesel engine main bearing seat.This method is through the change of processing method, and the main bearing hole after feasible the reprocessing no matter be main beating cap or main bearing seat, can both meet the tolerance and the roughness requirement of drawing requirement.
In order to reach the foregoing invention purpose, technical scheme provided by the invention is following:
A kind of repairing and processing method of main bearing hole on stand of diesel engine for ship; The circular hole of this main bearing hole for surrounding by semicircle orifice on the main bearing seat and the semicircle orifice on the main beating cap; There is casting flaw in the semicircle orifice surface of this main beating cap; It is characterized in that this repairing and processing method comprises the steps:
1. assert the character of casting flaw, and measure its size and the depth, decision mills the size on main beating cap size inclined-plane according to measurement result, and milling after accomplishing is fixed main bearing seat and main beating cap;
2. pump is tight support is tight at lathe rise seamless, and on machine tool accessories, installs dial gauge additional;
3. according to the inner hole of bearing seat school circle that has machined, find out the center of circle in original hole;
4. with the middle mind-set main beating cap direction skew of lathe boring cutter, the distance of skew equals the size of mill off on the main beating cap, and the position after the skew is as the zero-bit of lathe bore hole;
5. carry out bore hole according to the aperture of this main bearing hole that measures, accomplish the reclamation work of main bearing seat.
In technical scheme of the present invention, the distance of the 4. middle lathe boring cutter skew of said step is less than the tolerance of main bearing seat endoporus.
Be directed to concrete condition, described side-play amount is smaller or equal to 0.01mm.Direction size in the world is than the big 0.01mm in original aperture, within the margin of tolerance that this hole pattern paper requires like this.
Based on the above-mentioned processing method of the present invention, more existing processing method has obtained following technological merit:
Use method of the present invention to reprocess machining spindle and hold lid; At first can reduce because of casting defect as far as possible and scrap the loss that brings, secondly, reprocess in the process because the semicircle orifice processing dimension all has certain tolerance; With zero-bit by the center of circle in original fine finishining hole toward the inclined to one side 0.01mm of main beating cap direction; Carry out bore hole according to original aperture size again, can guarantee that like this roughness of the main bearing seat bore area that original fine finishining is good is unaffected, and this cheek position, hole direction of reprocessing after the processing still is original pore size; World direction size is than the big 0.01mm in original aperture, within the margin of tolerance that this hole pattern paper requires.
Description of drawings
Fig. 1 is the sketch map that there is defective in the bore area of main beating cap on the support of marine diesel.
Fig. 2 is the sketch map that needs the milling position in the repairing and processing method of main bearing hole on stand of diesel engine for ship of the present invention on the main beating cap.
Fig. 3 is the sketch map of main bearing hole zero setting in the repairing and processing method of main bearing hole on stand of diesel engine for ship of the present invention.
The specific embodiment
Come a kind of method of reprocessing the processing semicircle orifice of the present invention is done further elaboration in detail below in conjunction with accompanying drawing and instantiation, but can not limit protection scope of the present invention with this.
Because the casting ability is limit at present; Defectives such as part blank pore can occur, is mingled with in casting cycle, sand holes, shrinkage porosite; In two semicircle orifice process, usually can appear at after the endoporus fine finishining, find that the headkerchief bore area has fault in material; In order to reduce the influence of fault in material, must reprocess processing to this headkerchief to serviceability.
The present invention is that example is explained this processing method with big marine diesel engine support main bearing hole.This main bearing hole is made up of main bearing seat and main beating cap, the less and fineness requirement high again (Ra1.6) of the dimensional tolerance in this hole.But because the casting problem, the main beating cap bore area after fine finishining the time regular meeting find some defectives.Main bearing hole is used for installing bent axle, is bearing very big power, if main beating cap bore area defectiveness brings hidden danger will for the normal operation of whole diesel engine.Because the fine finishining of former main bearing hole is reprocessed this main beating cap with existing processing method, the roughness ratio that does not destroy main bearing seat again is difficult, and this solves this type of problem with regard to requiring us must seek a kind of effective more processing method with innovation.
We are directed to the main bearing hole that has defective of main bearing seat and reprocess; The support of diesel engine is made up of main beating cap 1 and main bearing seat 2; Respectively being provided with a semicircle orifice on main beating cap 1 and the main bearing seat 2, is a circular hole on the support of the two composition, and this circular hole then is a main bearing hole.The repairing and processing method that the present invention adopted comprises the steps:
The first, after main beating cap bore area defectiveness was found in main bearing hole fine finishining, this defects property was assert in the position of defective shown in the M among Fig. 1; Measure the size and the depth of defective, the corresponding size that should decide main beating cap size inclined-plane to mill according to size, the depth data of defective, the position that main beating cap 1 need mill is big or small inclined-plane; Its position is shown in the N among Fig. 2; After having milled size, again that the main bearing seat pump is tight by pincers worker, go up lathe then and reprocess.
The second, treat that the lathe operating personnel mix up the support school, after compressing, on the annex of lathe, load onto dial gauge, carry out the school circle, find out the center of circle of original main bearing hole by the main bearing seat endoporus of having processed.
Three, toward main beating cap direction skew 0.01mm, to establish according to this position and to reprocess the bore hole zero-bit, its position signal is like Fig. 3.
Four, go out the aperture of this bearing block semicircle orifice with inner diameter measurement, carry out bore hole according to this aperture size then.
Use the repairing and processing method of main bearing hole on stand of diesel engine for ship of the present invention both can reduce the loss from spoilage that brings because of casting defect; For enterprise and workshop having practiced thrift cost; Can guarantee the size and the roughness requirement of detail drawing again, guarantee the quality of product fully.
Claims (3)
1. the repairing and processing method of a main bearing hole on stand of diesel engine for ship; The circular hole of this main bearing hole for surrounding by semicircle orifice on the main bearing seat and the semicircle orifice on the main beating cap; There is casting flaw in the semicircle orifice surface of this main beating cap; It is characterized in that this repairing and processing method comprises the steps:
1. assert the character of casting flaw, and measure its size and the depth, decision mills the size of main beating cap inclined-plane (N) according to measurement result, and milling after accomplishing is fixed main bearing seat and main beating cap;
2. pump is tight support is tight at lathe rise seamless, and on machine tool accessories, installs dial gauge additional;
3. according to the inner hole of bearing seat school circle that has machined, find out the center of circle of original main bearing hole;
4. with the middle mind-set main beating cap direction skew of lathe boring cutter, the distance of skew equals the size of mill off on the main beating cap, and the position after the skew is as the zero-bit of lathe bore hole;
5. carry out bore hole according to the aperture of this main bearing hole that measures, accomplish the reclamation work of main bearing hole.
2. the repairing and processing method of main bearing hole on stand of diesel engine for ship according to claim 1 is characterized in that, the distance of the 4. middle lathe boring cutter skew of said step is less than the tolerance of main bearing seat endoporus.
3. the repairing and processing method of main bearing hole on stand of diesel engine for ship according to claim 2 is characterized in that, the distance of said skew is smaller or equal to 0.01mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200340A CN101758360B (en) | 2009-12-11 | 2009-12-11 | Repairing and processing method of main bearing hole on stand of diesel engine for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200340A CN101758360B (en) | 2009-12-11 | 2009-12-11 | Repairing and processing method of main bearing hole on stand of diesel engine for ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101758360A CN101758360A (en) | 2010-06-30 |
| CN101758360B true CN101758360B (en) | 2012-09-12 |
Family
ID=42489828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910200340A Expired - Fee Related CN101758360B (en) | 2009-12-11 | 2009-12-11 | Repairing and processing method of main bearing hole on stand of diesel engine for ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101758360B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105934298A (en) * | 2014-01-30 | 2016-09-07 | 株式会社神户制钢所 | Method for forming hole-processed casts, cast casing, and screw compressor casing |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954570B (en) * | 2010-08-11 | 2012-02-22 | 云顶汽车部件股份有限公司 | Method for machining inverse counter bore and chamfer angle by using two-step cutter bar |
| CN102284874A (en) * | 2011-08-16 | 2011-12-21 | 沪东重机有限公司 | Auxiliary processing tool for bearing cover of marine diesel |
| CN102528134B (en) * | 2011-12-30 | 2013-08-28 | 合肥熔安动力机械有限公司 | Opposite cutter machining method for inclined half face of main bearing hole of diesel engine for vessel |
| CN104097196B (en) * | 2014-07-03 | 2015-10-28 | 沪东重机有限公司 | A kind of projection scribble method for large-scale diesel engine support |
| CN105382272B (en) * | 2015-11-24 | 2017-10-27 | 海门黄海创业园服务有限公司 | The control method of cylinder head waterway outer wall thickness |
| CN107272595B (en) * | 2017-07-14 | 2019-04-23 | 中船动力有限公司 | Low-speed diesel engine base Hough method for processing surface |
| CN108247118B (en) * | 2017-12-28 | 2019-06-25 | 上海中船三井造船柴油机有限公司 | Method and cutter for processing diesel engine base size inclined-plane |
| CN108723414B (en) * | 2018-05-30 | 2020-06-12 | 山东蒂德精密机床有限公司 | Machining process for ensuring position tolerance of main hole system of precision box part of numerical control machine tool |
| CN109014769B (en) * | 2018-08-09 | 2021-01-26 | 中车大连机车车辆有限公司 | Method for repairing coaxiality of crankshaft hole |
| CN109175893B (en) * | 2018-08-30 | 2021-06-25 | 陕西柴油机重工有限公司 | Copying processing method for main bearing cap of diesel engine body |
| CN110614389B (en) * | 2019-10-21 | 2021-01-22 | 大连船用柴油机有限公司 | Boring processing method for crosshead bearing cover of large-scale low-speed marine diesel engine |
-
2009
- 2009-12-11 CN CN200910200340A patent/CN101758360B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105934298A (en) * | 2014-01-30 | 2016-09-07 | 株式会社神户制钢所 | Method for forming hole-processed casts, cast casing, and screw compressor casing |
| CN105934298B (en) * | 2014-01-30 | 2017-12-01 | 株式会社神户制钢所 | Forming method, the housing of moulding and the housing of screw compressor of moulding hole machined part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101758360A (en) | 2010-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101758360B (en) | Repairing and processing method of main bearing hole on stand of diesel engine for ship | |
| Pilný et al. | Hole quality and burr reduction in drilling aluminium sheets | |
| CN107984165B (en) | Machining method for large wind tunnel compressor shell | |
| CN102806443B (en) | Numerically-controlled processing method of nozzle housing piece | |
| CN102849179B (en) | 5000PCTC car rolls ship axle system lighting technique | |
| CN100381237C (en) | Method for manufacturing coaxial bore for workpiece with coaxial bore series in ultra long size | |
| US20070011872A1 (en) | System and method for repairing a gas turbine engine component | |
| CN105415093A (en) | Numerical control machining self-detection method | |
| CN106838019B (en) | It is a kind of for repairing the technique placenta of water supply pumping plant bearing block | |
| CN112453825A (en) | C-grade steel thin-wall threaded hole repairing method | |
| CN109531073A (en) | Hole machined improved method in a kind of pump valve body thin-wall part | |
| CN115401421A (en) | Preparation method of multi-connected turbine guide vane | |
| CN103862244B (en) | Propeller machining technology | |
| CN105215968B (en) | The profile-followed Machining Technology for Cutting of large aerospace thin-wall titanium alloy casting | |
| CN105921776A (en) | Method to make standard surface roughness by boring aluminum alloy | |
| CN105880936B (en) | bolt processing method | |
| KR100819429B1 (en) | Method for structure for an engine of a large ship | |
| CN104416328A (en) | Method for processing feeding gear gauge | |
| CN108195703B (en) | Method for evaluating machining performance of repaired cutter | |
| CN203712411U (en) | Cutter adjusting tool | |
| CN106425348B (en) | Processing method and mold | |
| CN105537860A (en) | Machining method for vacuum pump rotor | |
| CN116252097A (en) | Repairing method for main bearing hole of marine diesel engine base | |
| CN204881409U (en) | Utensil is examined to car C post turning reinforcing plate | |
| CN202622377U (en) | Centrifugal machine bearing seat nodular iron casting production tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20120912 Termination date: 20211211 |