CN109404485A - High speed marine diesel spherulitic iron crankshaft dynamic balancing De-weight method - Google Patents
High speed marine diesel spherulitic iron crankshaft dynamic balancing De-weight method Download PDFInfo
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- CN109404485A CN109404485A CN201811222220.3A CN201811222220A CN109404485A CN 109404485 A CN109404485 A CN 109404485A CN 201811222220 A CN201811222220 A CN 201811222220A CN 109404485 A CN109404485 A CN 109404485A
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- Prior art keywords
- duplicate removal
- weight
- dynamic balancing
- unbalance
- center
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
- F16F15/283—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same for engine crankshafts
Abstract
Present invention is mainly applied to diesel engine part manufacture fields, in particular to a kind of high speed marine diesel spherulitic iron crankshaft dynamic balancing De-weight method, it is characterized in that following steps: carry out the mode of equivalent duplicate removal from this from adjacent balance weight duplicate removal to realize dynamic balancing crankshaft: the product of non-equilibrium site and amount of unbalance and bent whole radius that dynamic balancing machine is surveyed is that M is surveyed, with support-side, the balance weight at two adjacent phase angles and surveyed amount of unbalance angle are respectively α, β, angle between the center of gravity of duplicate removal face is ψ, left side needs weight and center of gravity radius of gyration product is M left, right side needs weight and center of gravity radius of gyration product is M right；Such duplicate removal mode will be to rely on the particularity of crankshaft balance weight shape, method by accurately finding duplicate removal position center of gravity, regard amount of unbalance the vector of as an a direction to decompose, is calculated by amount of unbalance of the parallelogram law to duplicate removal position finally to obtain duplicate removal quality.
Description
Technical field
The present invention relates to a kind of high speed marine diesel spherulitic iron crankshaft dynamic balancing De-weight methods, are mainly used in diesel engine
Component produces and processes field.
Background technique
It is vibrated as caused by crank rotation imbalance to cut down in middle high speed diesel engine operation process, middle high speed diesel engine
Carrying out dynamic balancing inspection to crankshaft is steps necessary.Current diesel engine is save the cost, largely replaces steel bent using spherulitic iron crankshaft
Axis, but spherulitic iron crankshaft often results in deviation, additional cast blank general appearance due to the position of lightening hole in machining process
Without processing, therefore it will appear weight situation bigger than normal in later period dynamic balancing, traditional drilling duplicate removal can not meet
Duplicate removal demand.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of high speed marine diesel spherulitic iron crankshaft dynamic balancing removing repeat
Method, this method are the duplicate removal new paragons for the crankshaft that analysis goes weight big, reduce dynamic balancing to the greatest extent and dynamic balancing is repeated in the process
The number of test saves human and material resources, improves crankshaft dynamic balance efficiency.
High speed marine diesel spherulitic iron crankshaft dynamic balancing De-weight method of the present invention, it is characterised in that following step
It is rapid:
(1) carry out the mode of equivalent duplicate removal from this from adjacent balance weight duplicate removal to realize dynamic balancing crankshaft:
The product of non-equilibrium site and amount of unbalance and bent whole radius that dynamic balancing machine is surveyed is M survey, adjacent with support-side
Two phase angles balance weight and surveyed amount of unbalance angle be respectively α, β, the angle between the center of gravity of duplicate removal face is ψ, a left side
Side need to go weight and center of gravity radius of gyration product is M left, and right side needs weight and center of gravity radius of gyration product is M right；
According to known to the decomposition principle of parallelogram:
M surveys the left sin ψ of sin α=M
M surveys the right sin ψ of sin β=M
(2) the practical existing error of duplicate removal meeting, realizes dynamic balancing by second conventional of drilling.
Place repeatedly is turned 1,6 by the initial survey discovery amount of unbalance of a plurality of crankshaft, duplicate removal is corresponded at this and is fanned
Face does not have duplicate removal position.Drilling depth require it is smaller is not achieved with the purpose to realize dynamic balancing duplicate removal that drills, therefore consider from
The purpose that adjacent balance weight duplicate removal carrys out the mode of equivalent duplicate removal at this to realize dynamic balancing crankshaft, primary prospect is by balance weight side
The duplicate removal by way of milling, milled distance of the part center of gravity away from crank up center is approximately 226.72mm, if from the side
Face duplicate removal 1mm then duplicate removal 53g.Residual unbalance, and duplicate removal radius product are considered as a vector by us, from survey injustice
Weighing apparatus phase converts weight with the balance weight side duplicate removal of support-side to reach final duplicate removal purpose.
The principle that the crankshaft dynamic balance De-weight method is measured based on duplicate removal position center of gravity in balance weight configuration design, according to
It holds parallelogram law and decomposition computation is carried out to surveyed crankshaft imbalance amount, carry out milling duplicate removal after obtaining duplicate removal quality, it can
Once the 80%-90% of amount of unbalance is removed, subsequent increase drilling duplicate removal is modified, biggish for amount of unbalance
The method is easy to operate for crankshaft, and efficiency is higher.
The beneficial effects of the present invention are:
The crankshaft dynamic balance De-weight method crankshaft bigger than normal for amount of unbalance itself is especially suitable, in live practical operation
It can be drilled outside the primary milling face of progress plus once for the magnesium iron shaft experiment that dynamic balance grade is G2.5 required precision to realize,
Substantially increase crankshaft dynamic balance efficiency.Such duplicate removal mode will be to rely on the particularity of crankshaft balance weight shape, pass through standard
The method for really finding duplicate removal position center of gravity, regards amount of unbalance the vector of as an a direction to decompose, by parallel
Quadrilateral rule, which calculates the amount of unbalance at duplicate removal position, finally to obtain duplicate removal quality.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the vector schematic diagram that do not measure.
Specific embodiment
The present invention is described further with reference to the accompanying drawing:
As shown in Figure 1, high speed marine diesel spherulitic iron crankshaft dynamic balancing De-weight method of the present invention, feature exist
In following steps:
(1) carry out the mode of equivalent duplicate removal from this from adjacent balance weight duplicate removal to realize dynamic balancing crankshaft:
The product of non-equilibrium site and amount of unbalance and bent whole radius that dynamic balancing machine is surveyed is M survey, adjacent with support-side
Two phase angles balance weight and surveyed amount of unbalance angle be respectively α, β, the angle between the center of gravity of duplicate removal face is ψ, a left side
Side need to go weight and center of gravity radius of gyration product is M left, and right side needs weight and center of gravity radius of gyration product is M right；
According to known to the decomposition principle of parallelogram:
M surveys the left sin ψ of sin α=M
M surveys the right sin ψ of sin β=M；
(2) the practical existing error of duplicate removal meeting, realizes dynamic balancing by second conventional of drilling.
Specific embodiment:
By measurement, amount of unbalance appears in close to 1,6 and turns top dead center position, and the surveyed amount of unbalance angle of left support and
The surveyed amount of unbalance angle of right support is consistent, therefore need to turn from 2,5 and 3,4 turn corresponding balance weight close to surveyed amount of unbalance angle
Position carries out duplicate removal.Duplicate removal position is turned through measurement 2,5 and surveyed amount of unbalance position angle α is 9 °；3,4 duplicate removal position and institute are turned
Surveying amount of unbalance position angle β is 41 °.
The right sin ψ of sin β=M is surveyed according to M
Then 2 turn the gone amount of unbalance of balance weight are as follows:
The right side 20101.3 × sin41 °=M × sin50 °
The right side=172172.67 M
Regard duplicate removal position approximation as regular hexahedron, it is because gone material position of centre of gravity is away from centre of gyration 226.7mm, then practical
Duplicate removal weight is about 759.5g.Being computed every piece of balance weight duplicate removal thickness is about 7.15mm.
3 turn the gone amount of unbalance of balance weight are as follows:
The left side 20101.3 × sin9 °=M × sin50 °
A left side=40939.8 M
Being computed every piece of balance weight duplicate removal thickness is about 1.7mm.
Similarly:
Amount of unbalance carries out being calculated 4 by the duplicate removal decomposition turned to 4,5 at right support turns every piece of duplicate removal thickness of balance weight
Degree is about 1.3mm, and 5 to turn every piece of duplicate removal thickness of balance weight be about 5.46mm.
It is tested in this method 200 crankshaft dynamic balance of our company application at present, it is significant to drop since method use
Repeatedly the situation of weight is gone in adjustment during low crankshaft dynamic balance, greatly promotes crankshaft dynamic balance efficiency.
Claims (2)
1. a kind of high speed marine diesel spherulitic iron crankshaft dynamic balancing De-weight method, it is characterised in that following steps:
(1) carry out the mode of equivalent duplicate removal from this from adjacent balance weight duplicate removal to realize dynamic balancing crankshaft:
The product of non-equilibrium site and amount of unbalance and bent whole radius that dynamic balancing machine is surveyed is that M is surveyed, adjacent with support-side two
The balance weight at a phase angle and surveyed amount of unbalance angle is are respectively α, β, and the angle between the center of gravity of duplicate removal face is ψ, and left side needs
It goes weight and center of gravity radius of gyration product is M left, right side needs weight and center of gravity radius of gyration product is M right；
According to known to the decomposition principle of parallelogram:
M surveys the left sin ψ of sin α=M
M surveys the right sin ψ of sin β=M；
(2) the practical existing error of duplicate removal meeting, realizes dynamic balancing by second conventional of drilling.
2. high speed marine diesel spherulitic iron crankshaft dynamic balancing De-weight method according to claim 1, it is characterised in that: flat
Weight side duplicate removal by way of milling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222220.3A CN109404485B (en) | 2018-10-19 | 2018-10-19 | Dynamic balance weight removing method for ductile iron crankshaft of medium-high speed marine diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811222220.3A CN109404485B (en) | 2018-10-19 | 2018-10-19 | Dynamic balance weight removing method for ductile iron crankshaft of medium-high speed marine diesel engine |
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| Publication Number | Publication Date |
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| CN109404485A true CN109404485A (en) | 2019-03-01 |
| CN109404485B CN109404485B (en) | 2021-03-16 |
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|---|---|---|---|
| CN201811222220.3A Active CN109404485B (en) | 2018-10-19 | 2018-10-19 | Dynamic balance weight removing method for ductile iron crankshaft of medium-high speed marine diesel engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117245124A (en) * | 2023-11-20 | 2023-12-19 | 赢信汇通(雅安)智能制造有限公司 | Brake drum dynamic balance adjusting device and adjusting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3078119B2 (en) * | 1992-07-16 | 2000-08-21 | マツダ株式会社 | Manufacturing method of crankshaft |
| CN1521422A (en) * | 2003-02-14 | 2004-08-18 | 重庆大学 | Precise positioning method for balancing weight in rotor balancing |
| CN103292960A (en) * | 2013-06-17 | 2013-09-11 | 第一拖拉机股份有限公司 | Operation method for internal combustion engine crankshaft balancing mechanism with preset amount of unbalance |
| CN104019943A (en) * | 2014-07-02 | 2014-09-03 | 中国民用航空飞行学院 | Method for carrying out dynamic balance on aeroplane propeller by dynamic mass center correction method |
| CN104088889A (en) * | 2014-07-04 | 2014-10-08 | 上汽通用五菱汽车股份有限公司 | Lightweight crankshaft of small displacement combustion engine |
| CN104502023A (en) * | 2014-12-17 | 2015-04-08 | 天润曲轴股份有限公司 | Crankshaft dynamic balance testing and calibration method |
-
2018
- 2018-10-19 CN CN201811222220.3A patent/CN109404485B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3078119B2 (en) * | 1992-07-16 | 2000-08-21 | マツダ株式会社 | Manufacturing method of crankshaft |
| CN1521422A (en) * | 2003-02-14 | 2004-08-18 | 重庆大学 | Precise positioning method for balancing weight in rotor balancing |
| CN103292960A (en) * | 2013-06-17 | 2013-09-11 | 第一拖拉机股份有限公司 | Operation method for internal combustion engine crankshaft balancing mechanism with preset amount of unbalance |
| CN104019943A (en) * | 2014-07-02 | 2014-09-03 | 中国民用航空飞行学院 | Method for carrying out dynamic balance on aeroplane propeller by dynamic mass center correction method |
| CN104088889A (en) * | 2014-07-04 | 2014-10-08 | 上汽通用五菱汽车股份有限公司 | Lightweight crankshaft of small displacement combustion engine |
| CN104502023A (en) * | 2014-12-17 | 2015-04-08 | 天润曲轴股份有限公司 | Crankshaft dynamic balance testing and calibration method |
Non-Patent Citations (2)
| Title |
|---|
| 王德荣等: "六缸曲轴动平衡理论的研究", 《机电工程》 * |
| 程涛涛: "用于发动机曲轴的全自动平衡修正系统的设计研究", 《组合机床与自动化加工技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117245124A (en) * | 2023-11-20 | 2023-12-19 | 赢信汇通(雅安)智能制造有限公司 | Brake drum dynamic balance adjusting device and adjusting method |
| CN117245124B (en) * | 2023-11-20 | 2024-02-06 | 赢信汇通(雅安)智能制造有限公司 | Brake drum dynamic balance adjusting device and adjusting method |
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| CN109404485B (en) | 2021-03-16 |
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