CN102259285A - Follow-up grinding method for crankshaft connecting rod neck - Google Patents
Follow-up grinding method for crankshaft connecting rod neck Download PDFInfo
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- CN102259285A CN102259285A CN2011102317563A CN201110231756A CN102259285A CN 102259285 A CN102259285 A CN 102259285A CN 2011102317563 A CN2011102317563 A CN 2011102317563A CN 201110231756 A CN201110231756 A CN 201110231756A CN 102259285 A CN102259285 A CN 102259285A
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- connecting rod
- rod neck
- groups
- crankshaft
- motion
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention belongs to machining methods, and in particular relates to a follow-up grinding method for a crankshaft connecting rod neck. The method is characterized by comprising the following steps that: a crankshaft is pressed onto a bracket by using two tips and is controlled to rotate by using a numerical control system; a longitudinal guide rail is arranged on the central line of the crankshaft in the vertical direction; two groups of radial guide rails are arranged on the longitudinal guide rail; the motion directions of the two groups of radial guide rails are vertical to the longitudinal guide rail and the central line of the crankshaft; the two groups of radial guide rails are provided with a grinding wheel respectively; the two grinding wheels are oppositely arranged and are separated from each other through the connecting rod neck; the centers of the two grinding wheels are always on the same line as the center of the connecting rod neck; the longitudinal guide rail and the two groups of radial guide rails are controlled to move through the numerical control system respectively; when the eccentric quantity of the crankshaft is R, the two groups of radial guide rails do interpolation motion together with the longitudinal guide rail to drive the two grinding wheels and the center of the connecting rod neck to do synchronous circular motion, and the radius of a circle is the crankshaft eccentric quantity R; simultaneously, the two groups of radial guide rails respectively drive the two grinding wheels to do synchronous symmetric motion by taking the connecting rod neck as the central line until the minimum distance between the two grinding wheels is equal to the diameter of the connecting rod neck, namely the grinding operation of the connecting rod neck is finished. The method is high in machining accuracy, efficiency and economy.
Description
Technical field
The invention belongs to machining methods, specifically is a kind of follow grinding method of crank-shaft link neck.
Background technology
Bent axle is the major part in the engine, the required precision height, complex-shaped, poor rigidity, main Precision Machining are trunnion grinding and the grinding of connecting rod neck, when the trunnion grinding, can adopt the opposed while feeding of double abrasive wheel to offset radial grinding force, but with servo-actuated method grinding connecting rod neck the time,,, cause working (machining) efficiency low so can not eliminate radial grinding force with the method for the opposed while feeding of simple emery wheel because connecting rod neck centre-height constantly changes with respect to the emery wheel centre-height.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of follow grinding method of rational in infrastructure, practical and convenient, the opposed machining crankshafts connecting rod of employing two emery wheels neck that precision is high is provided.
Technical scheme of the present invention is as follows:
A kind of follow grinding method of crank-shaft link neck, it is characterized in that: with a bent axle with two top withstanding on the support, by digital control system control rotation, connecting rod neck central motion track is a circumference, with a longitudinal rail is set on the crankshaft axis vertical direction, two groups of radial guidances are housed on the longitudinal rail, the direction of motion of two groups of radial guidances and longitudinal rail, crankshaft axis is vertical, on two groups of radial guidances emery wheel is housed respectively, two emery wheels are opposed, middle across the connecting rod neck, two emery wheel centers and connecting rod neck center all the time point-blank, longitudinal rail and two groups of radial guidances are respectively by the digital control system controlled motion, when the crankshaft eccentric amount is R, two groups of radial guidances are all made moving interpolation with longitudinal rail, drive two emery wheels and synchronous circular motion is made at connecting rod neck center, and radius of circle is crankshaft eccentric amount R; Two groups of radial guidances drive two emery wheels respectively and do synchronous symmetric motion (radial grinding force that two wheel grinding connecting rod necks produce is cancelled each other) with connecting rod neck center line simultaneously, minimum range between two emery wheels equals connecting rod neck diameter, promptly finishes the grinding of connecting rod neck.
The present invention is owing to be provided with a longitudinal rail on two groups of radial guidance vertical direction, the motion of emery wheel is formed by stacking with the synchronous symmetric motion of two emery wheels with connecting rod neck center line by the moving interpolation (circular motion) of longitudinal rail and two groups of radial guidances, thereby can be by the main shaft and the connecting rod neck of two opposed emery wheels grinding bent axle when the servo-actuated, the machining accuracy height, the efficient height, good economy performance.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
The specific embodiment
As shown in Figure 1, a kind of follow grinding method of crank-shaft link neck, it is characterized in that: with a bent axle with two top withstanding on the support, by digital control system control rotation, connecting rod neck 3 central motion tracks are circumference 2, with a longitudinal rail 6 is set on crankshaft axis 1 vertical direction, radial guidance A5 is housed on the longitudinal rail 6, radial guidance B7, radial guidance A5, the direction of motion of radial guidance B7 and longitudinal rail 6, crankshaft axis 1 is vertical, radial guidance A5, emery wheel A4 is housed respectively on the radial guidance B, emery wheel A8, emery wheel A4, emery wheel A8 is opposed, middle across connecting rod neck 3, two emery wheel centers and connecting rod neck 3 centers are all the time point-blank, longitudinal rail 6 and radial guidance A5, radial guidance B7 is respectively by the digital control system controlled motion, when the crankshaft eccentric amount is R, and radial guidance A5, radial guidance B7 all makes moving interpolation with longitudinal rail, drive emery wheel A4, synchronous circular motion is made at emery wheel A8 and connecting rod neck center, and radius of circle is crankshaft eccentric amount R; Radial guidance A5, radial guidance B7 drive two emery wheel A4, emery wheel A8 respectively and do synchronous symmetric motion (radial grinding force that two wheel grinding connecting rod necks produce is cancelled each other) with connecting rod neck center line simultaneously, minimum range between emery wheel A4, emery wheel A8 equals connecting rod neck diameter, promptly finishes the grinding of connecting rod neck.
Claims (1)
1. the follow grinding method of a crank-shaft link neck, it is characterized in that: with a bent axle with two top withstanding on the support, by digital control system control rotation, connecting rod neck central motion track is a circumference, with a longitudinal rail is set on the crankshaft axis vertical direction, two groups of radial guidances are housed on the longitudinal rail, the direction of motion of two groups of radial guidances and longitudinal rail, crankshaft axis is vertical, on two groups of radial guidances emery wheel is housed respectively, two emery wheels are opposed, middle across the connecting rod neck, two emery wheel centers and connecting rod neck center all the time point-blank, longitudinal rail and two groups of radial guidances are respectively by the digital control system controlled motion, when the crankshaft eccentric amount is R, two groups of radial guidances are all made moving interpolation with longitudinal rail, drive two emery wheels and synchronous circular motion is made at connecting rod neck center, and radius of circle is crankshaft eccentric amount R; Two groups of radial guidances drive two emery wheels respectively and do synchronous symmetric motion with connecting rod neck center line simultaneously, and the minimum range between two emery wheels equals connecting rod neck diameter, promptly finishes the grinding of connecting rod neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102317563A CN102259285A (en) | 2011-08-09 | 2011-08-09 | Follow-up grinding method for crankshaft connecting rod neck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102317563A CN102259285A (en) | 2011-08-09 | 2011-08-09 | Follow-up grinding method for crankshaft connecting rod neck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102259285A true CN102259285A (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102317563A Pending CN102259285A (en) | 2011-08-09 | 2011-08-09 | Follow-up grinding method for crankshaft connecting rod neck |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108481102A (en) * | 2018-03-22 | 2018-09-04 | 天润曲轴股份有限公司 | A kind of method of interpolation grinding crankshaft fillet |
| CN112548701A (en) * | 2020-06-01 | 2021-03-26 | 大连理工大学 | Flexible pneumatic tensioning clamp for inner hole of slender hard and brittle thin-wall pipe fitting and working method |
| CN117260482A (en) * | 2023-11-21 | 2023-12-22 | 山西科立特精密铸造科技有限公司 | Synchronous dislocation polishing grinding equipment of bent axle |
Citations (5)
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| JPH05228811A (en) * | 1992-02-21 | 1993-09-07 | Gifu Kikai Shoji Kk | Grinding and polishing machine for crankshaft, etc. |
| JP2000296445A (en) * | 1999-04-15 | 2000-10-24 | Isuzu Motors Ltd | Grinding device and grinding method for elongate rod |
| EP2108480A1 (en) * | 2008-04-11 | 2009-10-14 | Jtekt Corporation | Grinding machine and grinding method |
| CN101837559A (en) * | 2010-03-19 | 2010-09-22 | 北京诺思泰格精密技术有限公司 | Crank shaft grinding method and crank shaft grinding machine |
| CN101890664A (en) * | 2009-05-18 | 2010-11-24 | Emag控股有限公司 | The method and apparatus that is used for machining crankshafts |
-
2011
- 2011-08-09 CN CN2011102317563A patent/CN102259285A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05228811A (en) * | 1992-02-21 | 1993-09-07 | Gifu Kikai Shoji Kk | Grinding and polishing machine for crankshaft, etc. |
| JP2000296445A (en) * | 1999-04-15 | 2000-10-24 | Isuzu Motors Ltd | Grinding device and grinding method for elongate rod |
| EP2108480A1 (en) * | 2008-04-11 | 2009-10-14 | Jtekt Corporation | Grinding machine and grinding method |
| CN101890664A (en) * | 2009-05-18 | 2010-11-24 | Emag控股有限公司 | The method and apparatus that is used for machining crankshafts |
| CN101837559A (en) * | 2010-03-19 | 2010-09-22 | 北京诺思泰格精密技术有限公司 | Crank shaft grinding method and crank shaft grinding machine |
Non-Patent Citations (3)
| Title |
|---|
| 《制造技术与机床》 20110630 黄兴红等 汽车曲轴的"三轴联动切点跟踪"随动磨床及其关键技术研究 第166至169页 1 , 第06期 * |
| 谢胜泉等: "曲轴磨削加工新方法与插补算法的研究", 《机械与电子》, no. 03, 30 May 1998 (1998-05-30), pages 31 - 33 * |
| 黄兴红等: "汽车曲轴的"三轴联动切点跟踪"随动磨床及其关键技术研究", 《制造技术与机床》, no. 06, 30 June 2011 (2011-06-30), pages 166 - 169 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108481102A (en) * | 2018-03-22 | 2018-09-04 | 天润曲轴股份有限公司 | A kind of method of interpolation grinding crankshaft fillet |
| CN112548701A (en) * | 2020-06-01 | 2021-03-26 | 大连理工大学 | Flexible pneumatic tensioning clamp for inner hole of slender hard and brittle thin-wall pipe fitting and working method |
| CN117260482A (en) * | 2023-11-21 | 2023-12-22 | 山西科立特精密铸造科技有限公司 | Synchronous dislocation polishing grinding equipment of bent axle |
| CN117260482B (en) * | 2023-11-21 | 2024-01-23 | 山西科立特精密铸造科技有限公司 | Synchronous dislocation polishing grinding equipment of bent axle |
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Application publication date: 20111130 |