CN109773416A - A kind of high lead bearing shell manufacturing process of marine main engine thin-walled - Google Patents
A kind of high lead bearing shell manufacturing process of marine main engine thin-walled Download PDFInfo
- Publication number
- CN109773416A CN109773416A CN201711126172.3A CN201711126172A CN109773416A CN 109773416 A CN109773416 A CN 109773416A CN 201711126172 A CN201711126172 A CN 201711126172A CN 109773416 A CN109773416 A CN 109773416A
- Authority
- CN
- China
- Prior art keywords
- bearing shell
- processing
- slot
- basis
- main engine
- 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
Abstract
The present invention relates to a kind of high lead bearing shell manufacturing process of marine main engine thin-walled.It follows the steps below: 1) refining to warding off the bearing shell after tin, using cylinder axial line as positioning datum processing excircles, inner circle, one of end face and chamfering when processing bearing shell, then other end is processed on the basis of the end face of processing again, then processes the slot of inner surface；2) when processing outmost slot on the basis of end face, with the direct milling of profile milling cutter, second slot is processed on the basis of manufactured slot most upper edge after processing is completed, and so on, until process finishing.The present invention provides a kind of rational technology, and the bearing shell processed is made to have a kind of high lead bearing shell manufacturing process of marine main engine thin-walled of fine quality.
Description
Technical field
The present invention relates to a kind of high lead bearing shell manufacturing process of marine main engine thin-walled, belong to ship parts technical field.
Background technique
New China's On the eve of the liberation in 1949 makes repair enterprise and there was only 20, and number of employees is less than 20,000, year shipbuilding yield
Substantially at 6000 tons or so, reform and opening-up, Chinese shipbuilding industry opens the door, and participates in the competition of international market, shipbuilding technology and
Shipbuilding capacity all improves a lot, and by 1998, national steel ship output arrived more than 500 ten thousand tons, and outlet yield reaches
More than 200 ten thousand tons.Since 1993, position, Shipbuilding of China yield in 2003 have been ranked the third of the world within China's shipbuilding aggregate tonnage continuous ten years
It has been more than 6,000,000 tons, has accounted for the share in the world 11.2%, Shipbuilding of China yield in 2004 more than 8,500,000 tons, accounts for the share in the world
More than 15%, China's shipbuilding industry accounts for world's morning bed share and climbs up and up, ranking the first in the world in 2010.Before and after 2015, China
Shipbuilding yield accounts for 30% or more of world's shipbuilding share, and China's shipbuilding industry enters the unprecedented blossom period.
Rationally designing ship machinery, reasonably selecting technique processing scheme is the key that improve water energy transformation efficiency.Bearing shell is
The important composition component of marine main engine middle (center) bearing, marine main engine middle (center) bearing are divided into thrust bearing and guide bearing again, they are in unit
Respective effect is subject to axial force (spindle portion weight+axial hydraulic thrust) respectively and limits the swing of axis when operation, maintains
The axial location adjusted when installation.They play incomparable important role in unit safety stable operation.As they
Building block --- bearing shell naturally also plays very important effect.Reasonable design, processing are the key that guarantee bearing quality
Place will mainly introduce a kind of high lead bearing shell manufacturing process of marine main engine thin-walled herein.
Axis is known as axle journal by bearing support point, and the part to match with axle journal is known as bearing shell.Bearing shell is sliding bearing and axis
The part of contact, it is very smooth, it is generally made, is also cried " bushing " of wear-resistant materials such as bronze, antifriction alloys, shape is tiles
Semi-cylindrical.When sliding bearing works, require there is one layer of very thin oil film to play lubricating action between bearing shell and shaft.If due to
Insufficient lubrication there is direct friction between bearing shell and shaft, friction can generate very high temperature, although bearing shell is due to spy
Different High-temperature resistant alloy material is made, but the high temperature that direct friction generates occurs and is still enough to burn out on bearing shell.Bearing shell is also possible to
Since load is excessive, temperature is excessively high, there are the factors such as impurity or viscosity exception to cause tile kilning for lubricating oil.Sliding bearing after tile kilning
With regard to damage.Effect of the guide bearing in marine main engine is to limit the throw range of shaft operation, what maintenance was adjusted when installing
Axial location, and bear the radial force and vibration force that are transmitted by hydraulic turbine main shaft.On assembly relation, withstood forces from bearing is improved
Condition is set out, and position of bearings should keep runner most short to the cantilever of position of bearings, can make marine main engine work so as far as possible close to runner
It is more preferable to make more stable and bearing operating condition itself.
Summary of the invention
The present invention is in view of the foregoing drawbacks, and it is an object of the present invention to provide a kind of rational technology, makes the bearing shell processed have fine matter
A kind of high lead bearing shell manufacturing process of marine main engine thin-walled of amount.
Thus the technical solution adopted by the present invention is that: the present invention follows the steps below:
1) refine to warding off the bearing shell after tin, when processing bearing shell using cylinder axial line as positioning datum processing excircles, inner circle, its
In an end face and chamfering, other end is then processed on the basis of the end face of processing again, then process inner surface slot；
2) when processing outmost slot on the basis of end face, with the direct milling of profile milling cutter, after processing is completed manufactured
Second slot is processed on the basis of the most upper edge of slot, and so on, until process finishing.
Further, when being processed to inner circle, using following auxiliary mould, the structure type of the auxiliary mould
Are as follows: it is set in the bearing shell outer surface, the tooling Internal periphery and the corresponding fitting setting of the bearing shell outer surface profile, the work
Dress inward at both ends each extends over out snap ring, and the snap ring is inserted into the bearing shell.
Further, the tooling inner surface is provided with the elastic cushion of hollow setting, and sets in the end of the elastic cushion
It is equipped with inflating port.
The present invention passes through: 1) to the reasonable control of technique by reasonable selection to positioning end face, so that manufacture
Bearing shell has good precision, adequately meets the requirement of bearing shell；
2) material for considering that bearing shell uses is softer, and the present invention increases auxiliary mould when processing to bearing shell inner circle, leads to
The presence for crossing auxiliary mould forms effective support to bearing shell, while the auxiliary mould does not influence processing of the cutter to inner circle, and
The position of the auxiliary mould is adjustable, and by the setting of hollow elasticity pad, so that auxiliary mould and bearing shell can be formed closely
Contact, the locating effect both guaranteed, and the damage on bearing shell surface will not be caused because of rigid contact；The hollow elasticity simultaneously
Pad adjusting is more flexible, can overcome the disadvantages that some foozles and some freedom degrees of rigging error bring, guarantees that it can be played very well
Booster action, further increase bearing quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of tooling of the present invention.
Specific embodiment
The present invention follows the steps below:
1) refine to warding off the bearing shell after tin, when processing bearing shell using cylinder axial line as positioning datum processing excircles, inner circle, its
In an end face and chamfering, other end is then processed on the basis of the end face of processing again, then process inner surface slot；
2) when processing outmost slot on the basis of end face, with the direct milling of profile milling cutter, after processing is completed manufactured
Second slot is processed on the basis of the most upper edge of slot, and so on, until process finishing.
Further, when being processed to inner circle, using following auxiliary mould, the structure type of the auxiliary mould
Are as follows: it is set in the bearing shell outer surface, the tooling Internal periphery and the corresponding fitting setting of the bearing shell outer surface profile, the work
Dress inward at both ends each extends over out snap ring, and the snap ring is inserted into the bearing shell.
Further, the tooling inner surface is provided with the elastic cushion of hollow setting, and sets in the end of the elastic cushion
It is equipped with inflating port.
Make further explanation to the present invention below: the present invention is coarse to bearing shell Inner arc surface and upper and lower two sections
Degree requirement is very high, and respectively 0.8 and 3.2, external arc surface roughness requirements decrease than Inner arc surface, including being 6.3.
Arc-shaped surface precision prescribed is high the reason is that directly to contact with axis with the bearing metal ZCuSnSbN6 of the direct precision-fit of bearing shell,
When the shaft is rotated, it has relative motion between axis, has friction, therefore in order to reduce friction, can only pass through the oil between them
The presence of film come reduce friction be inadequate, it is necessary to reduce the coefficient of friction between them, here it is the roughness to it to want
Seek high reason.In order to reach surface roughness 0.8, need to refine to warding off the bearing shell after tin, and upper and lower two end faces are only
It will be by just reaching 3.2 required precisions after rough turn half smart car.In order to guarantee internal-external circle concentricity, when processing bearing shell, still with
Cylinder axial line is positioning datum turning, inner circle, one of end face and chamfering, then again on the basis of the end face of processing
Other end is processed, then processes the oil groove of inner surface, its design basis is two end faces up and down, and while processing then needs to examine
When considering it and end face and the positional relationship between them, therefore processing, when first processing outmost slot on the basis of end face, use
Second slot is processed in the direct milling of profile milling cutter on the basis of manufactured slot most upper edge after processing is completed, and so on, directly
To process finishing.Cylinder is cut into 2 piece of half circular shaft that chord length is 535.5 on the basis of axial line again after processing reaches requirement
Watt, the center line of every piece of bearing shell is design basis, and other sizes are all to determine on the basis of it, and when processing is held with upper and lower two
Face and middle line are as positioning datum, because upper and lower end faces process in a upper procedure, surface accuracy has reached
To requirement, it is directly contacted with fixture, then on the basis of center line, is processed on the basis of two faces of slot and left and right of outer surface
Respectively by the local chamfering that it connect with outside face, completed with milling.Finally interior spiral shell is looked on the basis of center line or left and right end face
The center of circle of line, difference machining internal thread.
Claims (3)
1. a kind of high lead bearing shell manufacturing process of marine main engine thin-walled, which is characterized in that follow the steps below:
1) refine to warding off the bearing shell after tin, when processing bearing shell using cylinder axial line as positioning datum processing excircles, inner circle, its
In an end face and chamfering, other end is then processed on the basis of the end face of processing again, then process inner surface slot；
2) when processing outmost slot on the basis of end face, with the direct milling of profile milling cutter, after processing is completed manufactured
Second slot is processed on the basis of the most upper edge of slot, and so on, until process finishing.
2. the high lead bearing shell manufacturing process of a kind of marine main engine thin-walled according to claim 1, which is characterized in that internal
When circle is processed, using following auxiliary mould, the structure type of the auxiliary mould are as follows: it is set in the bearing shell outer surface,
The tooling Internal periphery and the corresponding fitting setting of the bearing shell outer surface profile, the tooling inward at both ends each extend over card release
Ring, the snap ring are inserted into the bearing shell.
3. the high lead bearing shell manufacturing process of a kind of marine main engine thin-walled according to claim 2, which is characterized in that the work
Dress inner surface is provided with the elastic cushion of hollow setting, and the end of the elastic cushion is provided with inflating port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711126172.3A CN109773416A (en) | 2017-11-15 | 2017-11-15 | A kind of high lead bearing shell manufacturing process of marine main engine thin-walled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711126172.3A CN109773416A (en) | 2017-11-15 | 2017-11-15 | A kind of high lead bearing shell manufacturing process of marine main engine thin-walled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109773416A true CN109773416A (en) | 2019-05-21 |
Family
ID=66494208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711126172.3A Pending CN109773416A (en) | 2017-11-15 | 2017-11-15 | A kind of high lead bearing shell manufacturing process of marine main engine thin-walled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109773416A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922637A (en) * | 2020-07-21 | 2020-11-13 | 浙江长盛滑动轴承股份有限公司 | Manufacturing process for ensuring coaxiality of shaft sleeve |
-
2017
- 2017-11-15 CN CN201711126172.3A patent/CN109773416A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922637A (en) * | 2020-07-21 | 2020-11-13 | 浙江长盛滑动轴承股份有限公司 | Manufacturing process for ensuring coaxiality of shaft sleeve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100455401C (en) | Double hydraulic rolling tool with equal rolling force | |
| CN100571945C (en) | A kind of self-rolling type end mill(ing) cutter with wiper inserts | |
| CN204366701U (en) | A kind of hydrostatic and hydrodynamic bearing of grinding machine superhigh precision main shaft of grinding carriage | |
| CN104526546A (en) | Static and dynamic pressure bearing for main shaft of ultra-high-precision grinding wheel frame of grinding machine | |
| CN102367835B (en) | Self-lubricating joint bearing and manufacturing method thereof | |
| CN201192736Y (en) | Level loading and self rolling facing mill | |
| CN111482775B (en) | Method for machining metal solid cage with special-shaped pocket holes | |
| CN109773416A (en) | A kind of high lead bearing shell manufacturing process of marine main engine thin-walled | |
| CN102463439A (en) | Rolling depression cutter | |
| CN105710401A (en) | Special cutter bar for boring inner annular grooves of deep-long holes | |
| CN102151852B (en) | Hydro-hybrid ceramic main shaft device | |
| CN107906127A (en) | Single four oil film wedge endoporus heavy-duty sliding bearing of rotation direction | |
| CN202251437U (en) | Self-lubricating oscillating bearing | |
| CN100429037C (en) | Technique for manufacturing composite end cap of grinding machine in large diameter | |
| CN202040204U (en) | Bimetallic semi-floating supporting sliding bearing for high pressure ratio marine supercharger | |
| CN106351955A (en) | Coiling shaft half bushing and production technology thereof | |
| CN205798593U (en) | Floating expansion reamer | |
| CN100589905C (en) | High-precision bearing adaptive sleeve machining method | |
| CN207364099U (en) | A kind of novel high speed bearing shell | |
| CN208390664U (en) | A kind of novel bushing backing roll | |
| CN106425304A (en) | Machining process for oil jet nozzle | |
| CN1624348A (en) | Processing method of deep trough ball bearig ball sbaped pocket hole cage | |
| CN108547874A (en) | A kind of bimetallic bearing | |
| CN206122710U (en) | Bi -polar main shaft | |
| CN220378858U (en) | Planetary gear system with stable operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190521 |