CN107617931A - The method for grinding of main bearing journal - Google Patents
The method for grinding of main bearing journal Download PDFInfo
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- CN107617931A CN107617931A CN201711035919.4A CN201711035919A CN107617931A CN 107617931 A CN107617931 A CN 107617931A CN 201711035919 A CN201711035919 A CN 201711035919A CN 107617931 A CN107617931 A CN 107617931A
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- intermediate spindle
- spindle neck
- bent axle
- ground
- grinding
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 229910001651 emery Inorganic materials 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of method for grinding of main bearing journal, comprise the following steps：A, first center hole is ground；B, machine tool chief axis is flexibly connected by universal coupling and bent axle, the bent axle other end with tail stock for machine tool is top abuts against；C, position will be supported on the basis of intermediate spindle neck, after having adjusted, unclamps tailstock；D, intermediate spindle neck first is roughly ground with emery wheel, makes to leave 0.1 millimeter~0.12 millimeter of stock removal between intermediate spindle neck of the size away from finished product bent axle at the intermediate spindle neck of benchmark supporting position；E, D steps are repeated, fine grinding is multiple repeatedly, and intermediate spindle neck is ground to the size of the intermediate spindle neck of finished product bent axle；F：The size that respectively two bearing position trunnions be ground to the bearing position trunnion of finished product bent axle is completed, and when being ground to two bearing position trunnions, bracket is used at intermediate spindle neck.Than prior art, the present invention can solve the problems, such as that the processing fine grinding of existing main bearing journal axiality is poor.
Description
Technical field
The present invention relates to machinery manufacturing technology field, especially a kind of method for grinding for main bearing journal.
Background technology
Bent axle generally has trunnion and rod journal, and the axiality of its trunnion is to weigh the important finger of crankshaft quality
Mark, it directly affects the performance of installed tool.If the axiality of trunnion is overproof, bent axle can produce additional curved in the running
Transverse stress, the abrasion of axle journal can be aggravated, the alternate stress pressed when can be drawn when knuckle position produces, when being permitted more than material
During with stress, easily cracked at knuckle position, crankshaft breakdown can be caused when serious；And the axiality of bent axle is to refine
Formed during trunnion, therefore, improve the fine grinding quality of main bearing journal, being that Crankshaft Machining practitioner is urgently to be resolved hurrily primarily asks
Topic.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of method for grinding of main bearing journal, to solve existing bent axle
The problem of processing fine grinding of trunnion axiality is poor.
The technical proposal for solving the technical problem of the invention is：A kind of method for grinding of main bearing journal, bent axle are set
There is intermediate spindle neck and be located at the bearing position trunnion of the intermediate spindle neck both sides respectively, it comprises the following steps：
A, first the center hole of crankshaft two end is ground；
B, machine tool chief axis is flexibly connected by one end of universal coupling and bent axle, center hole and the lathe tail of the bent axle other end
The top of frame abuts against；
C, position will be supported on the basis of intermediate spindle neck, school circle, after having adjusted, unclamps the top of tailstock；
D, intermediate spindle neck first is roughly ground with emery wheel, side adjusts the auxiliary bracket at two side bearing position trunnions simultaneously during grinding, really
The error for protecting benchmark supporting position is within ± 0.005 millimeter；Corase grind is multiple repeatedly, until passing through centimeter check intermediate spindle neck
Bounce when being zero, and make between intermediate spindle neck of the size away from finished product bent axle at the intermediate spindle neck of benchmark supporting position
Leave 0.1 millimeter~0.12 millimeter of stock removal；
E, D steps are repeated, fine grinding is multiple repeatedly, and intermediate spindle neck is ground to the size of the intermediate spindle neck of finished product bent axle；
F：The size that respectively two bearing position trunnions be ground to the bearing position trunnion of finished product bent axle is completed, to two
When individual bearing position trunnion is ground, bracket is used at intermediate spindle neck.
In the method for grinding technical scheme of above-mentioned main bearing journal, more specifically technical scheme can also be：The D steps
Corase grind number be 2 times~3 times.
Further：The fine grinding number of the E steps is 4 times~5 times.
Further：The grinding number of the F-step is 5 times~6 times.
By adopting the above-described technical solution, the present invention has the advantages that compared with prior art：1st, it is of the invention
It is ground, i.e., is ground in its natural state at bent axle using float support, eliminates pressure and thermal deformation and machine tool chief axis essence
Degree influences, and improves the machining accuracy of main bearing journal, and the machining accuracy of the axiality of finished product bent axle is high；2nd, bent axle is improved
Service life.
Brief description of the drawings
Fig. 1 is the grinding schematic diagram of the bent axle of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described：
Embodiment 1：
A kind of bent axle is provided with intermediate spindle neck 2 and is located at the bearing position trunnion of the both sides of intermediate spindle neck 2, two bearings respectively
Position trunnion is bearing position trunnion 1 and bearing position trunnion 3 respectively；
The method for grinding of the main bearing journal comprises the following steps：
A, first the center hole of crankshaft two end is ground；
B, machine tool chief axis is flexibly connected by one end of universal coupling 10 and bent axle, the center hole and lathe of the bent axle other end
Top the 13 of tailstock abut against；
C, position will be supported on the basis of intermediate spindle neck 2, school circle, after having adjusted, unclamps top the 13 of tailstock；
D, first intermediate spindle neck 2 is roughly ground with emery wheel, side adjusts two side bearing position trunnions 1 and bearing position trunnion simultaneously during grinding
Auxiliary bracket 11 at 3, it is ensured that the error of benchmark supporting position is within ± 0.005 millimeter；Roughly grind 2 times repeatedly, until passing through hundred
When dividing the bounce of table detection intermediate spindle neck to be zero, and make the size at the intermediate spindle neck 2 of benchmark supporting position away from finished product
The stock removal of 0.1 millimeter of millimeter is left between the intermediate spindle neck 2 of bent axle；
E, D steps are repeated, are refined 4 times repeatedly, intermediate spindle neck 2 is ground to the size of the intermediate spindle neck 2 of finished product bent axle；
F：The size that respectively two bearing position trunnions be ground to the bearing position trunnion of finished product bent axle is completed, to two
When individual bearing position trunnion is ground, bracket 12 is used at intermediate spindle neck 2, grinding number is 5 times, as shown in Figure 1.
Embodiment 2：
A kind of bent axle is provided with intermediate spindle neck 2 and is located at the bearing position trunnion of the both sides of intermediate spindle neck 2, two bearings respectively
Position trunnion is bearing position trunnion 1 and bearing position trunnion 3 respectively；
The method for grinding of the main bearing journal comprises the following steps：
A, first the center hole of crankshaft two end is ground；
B, machine tool chief axis is flexibly connected by one end of universal coupling 10 and bent axle, the center hole and lathe of the bent axle other end
Top the 13 of tailstock abut against；
C, position will be supported on the basis of intermediate spindle neck 2, school circle, after having adjusted, unclamps top the 13 of tailstock；
D, first intermediate spindle neck 2 is roughly ground with emery wheel, side adjusts two side bearing position trunnions 1 and bearing position trunnion simultaneously during grinding
Auxiliary bracket 11 at 3, it is ensured that the error of benchmark supporting position is within ± 0.005 millimeter；Roughly grind 3 times repeatedly, until passing through hundred
When dividing the bounce of table detection intermediate spindle neck to be zero, and make the size at the intermediate spindle neck 2 of benchmark supporting position away from finished product
The stock removal of 0.1 millimeter of millimeter is left between the intermediate spindle neck 2 of bent axle；
E, D steps are repeated, are refined 5 times repeatedly, intermediate spindle neck 2 is ground to the size of the intermediate spindle neck 2 of finished product bent axle；
F：The size that respectively two bearing position trunnions be ground to the bearing position trunnion of finished product bent axle is completed, to two
When individual bearing position trunnion is ground, bracket 12 is used at intermediate spindle neck 2, grinding number is 6 times, as shown in Figure 1.
Claims (4)
1. a kind of method for grinding of main bearing journal, bent axle is provided with intermediate spindle neck and respectively positioned at the intermediate spindle neck both sides
Bearing position trunnion, it is characterised in that comprise the following steps：
A, first the center hole of crankshaft two end is ground；
B, machine tool chief axis is flexibly connected by one end of universal coupling and bent axle, center hole and the lathe tail of the bent axle other end
The top of frame abuts against；
C, position will be supported on the basis of intermediate spindle neck, school circle, after having adjusted, unclamps the top of tailstock；
D, intermediate spindle neck first is roughly ground with emery wheel, side adjusts the auxiliary bracket at two side bearing position trunnions simultaneously during grinding, really
The error for protecting benchmark supporting position is within ± 0.005 millimeter；Corase grind is multiple repeatedly, until passing through centimeter check intermediate spindle neck
Bounce when being zero, and make between intermediate spindle neck of the size away from finished product bent axle at the intermediate spindle neck of benchmark supporting position
Leave 0.1 millimeter~0.12 millimeter of stock removal；
E, D steps are repeated, fine grinding is multiple repeatedly, and intermediate spindle neck is ground to the size of the intermediate spindle neck of finished product bent axle；
F：The size that respectively two bearing position trunnions be ground to the bearing position trunnion of finished product bent axle is completed, to two
When individual bearing position trunnion is ground, bracket is used at intermediate spindle neck.
2. the method for grinding of main bearing journal according to claim 1, it is characterised in that：The corase grind number of the D steps
For 2 times~3 times.
3. the method for grinding of main bearing journal according to claim 1, it is characterised in that：The fine grinding number of the E steps
For 4 times~5 times.
4. the method for grinding of main bearing journal according to claim 1, it is characterised in that：The grinding number of the F-step
For 5 times~6 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711035919.4A CN107617931A (en) | 2017-10-30 | 2017-10-30 | The method for grinding of main bearing journal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711035919.4A CN107617931A (en) | 2017-10-30 | 2017-10-30 | The method for grinding of main bearing journal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107617931A true CN107617931A (en) | 2018-01-23 |
Family
ID=61092078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201711035919.4A Withdrawn CN107617931A (en) | 2017-10-30 | 2017-10-30 | The method for grinding of main bearing journal |
Country Status (1)
| Country | Link |
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| CN (1) | CN107617931A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814889A (en) * | 2019-11-26 | 2020-02-21 | 中车戚墅堰机车有限公司 | Method for grinding main journal of multi-throw crankshaft through fixed support |
| CN115647948A (en) * | 2022-09-29 | 2023-01-31 | 哈尔滨汽轮机厂有限责任公司 | Grinding method for super-hard coating hammer-type valve rod with large length-diameter ratio |
| CN115781201A (en) * | 2022-12-08 | 2023-03-14 | 武汉重工铸锻有限责任公司 | Machining method of marine diesel engine crankshaft with surface quenching function |
| CN116748957A (en) * | 2023-06-09 | 2023-09-15 | 中船动力镇江有限公司 | CNC machining method of crankshaft main journal based on follow-up grinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759987A (en) * | 2005-11-15 | 2006-04-19 | 潍柴动力股份有限公司 | method for grinding crankshaft of diesel engine accurately |
| CN102152180A (en) * | 2011-01-24 | 2011-08-17 | 青岛淄柴博洋柴油机股份有限公司 | Method for finely grinding main shaft necks of crankshaft |
| WO2012156469A1 (en) * | 2011-05-17 | 2012-11-22 | Erwin Junker Maschinenfabrik Gmbh | Method and production line for machining a crankshaft |
| CN103624642A (en) * | 2012-12-03 | 2014-03-12 | 溧阳市瑞威中速柴油机配件有限公司 | Machining method for grinding main journal of crankshaft in floating mode |
| CN103639860A (en) * | 2013-12-20 | 2014-03-19 | 内江富晟机械有限公司 | Large-scale slender crank shaft grinding tool and method |
| CN104440433A (en) * | 2014-12-01 | 2015-03-25 | 南车资阳机车有限公司 | Unbalanced crankshaft balanced grinding method |
-
2017
- 2017-10-30 CN CN201711035919.4A patent/CN107617931A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759987A (en) * | 2005-11-15 | 2006-04-19 | 潍柴动力股份有限公司 | method for grinding crankshaft of diesel engine accurately |
| CN102152180A (en) * | 2011-01-24 | 2011-08-17 | 青岛淄柴博洋柴油机股份有限公司 | Method for finely grinding main shaft necks of crankshaft |
| WO2012156469A1 (en) * | 2011-05-17 | 2012-11-22 | Erwin Junker Maschinenfabrik Gmbh | Method and production line for machining a crankshaft |
| CN103624642A (en) * | 2012-12-03 | 2014-03-12 | 溧阳市瑞威中速柴油机配件有限公司 | Machining method for grinding main journal of crankshaft in floating mode |
| CN103639860A (en) * | 2013-12-20 | 2014-03-19 | 内江富晟机械有限公司 | Large-scale slender crank shaft grinding tool and method |
| CN104440433A (en) * | 2014-12-01 | 2015-03-25 | 南车资阳机车有限公司 | Unbalanced crankshaft balanced grinding method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814889A (en) * | 2019-11-26 | 2020-02-21 | 中车戚墅堰机车有限公司 | Method for grinding main journal of multi-throw crankshaft through fixed support |
| CN110814889B (en) * | 2019-11-26 | 2021-02-09 | 中车戚墅堰机车有限公司 | Method for grinding main journal of multi-throw crankshaft through fixed support |
| CN115647948A (en) * | 2022-09-29 | 2023-01-31 | 哈尔滨汽轮机厂有限责任公司 | Grinding method for super-hard coating hammer-type valve rod with large length-diameter ratio |
| CN115781201A (en) * | 2022-12-08 | 2023-03-14 | 武汉重工铸锻有限责任公司 | Machining method of marine diesel engine crankshaft with surface quenching function |
| CN116748957A (en) * | 2023-06-09 | 2023-09-15 | 中船动力镇江有限公司 | CNC machining method of crankshaft main journal based on follow-up grinder |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180123 |
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