CN110653591A - Local adjusting method for interference fit installation of crankshaft and chain wheel - Google Patents
Local adjusting method for interference fit installation of crankshaft and chain wheel Download PDFInfo
- Publication number
- CN110653591A CN110653591A CN201910997391.1A CN201910997391A CN110653591A CN 110653591 A CN110653591 A CN 110653591A CN 201910997391 A CN201910997391 A CN 201910997391A CN 110653591 A CN110653591 A CN 110653591A
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- China
- Prior art keywords
- chain wheel
- crankshaft
- interference fit
- standard
- reach
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- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/10—Aligning parts to be fitted together
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
A local adjustment method for the interference fit installation of a crankshaft and a chain wheel is characterized in that the chain wheel of the crankshaft is fixedly installed on a shaft body of the crankshaft in an interference fit manner through a shrink fit process, and the method comprises the following steps: and locally and rapidly heating the position of the chain wheel which is not up to the standard in the matching process with the crankshaft, and applying force to the chain wheel by using a hydraulic jack after the temperature reaches the rated temperature to enable the chain wheel to generate local displacement until the interference fit data of the chain wheel and the crankshaft reach the standard. The invention solves the problem that the interference fit between the crankshaft and the chain wheel does not reach the standard, can adjust and correct the assembly position of the crankshaft chain wheel in place, eliminates the fit deviation between the chain wheel and the shaft body, and ensures that the assembly of the crankshaft and the chain wheel meets the drawing positioning requirement, thereby improving the assembly precision, improving the overall product quality of the marine low-speed diesel engine, and having the advantages of simplicity, feasibility and strong operability.
Description
Technical Field
The invention relates to a manufacturing process of a marine low-speed diesel engine, in particular to a local adjusting method for interference fit installation of a crankshaft and a chain wheel, and belongs to the technical field of machining.
Background
Referring to fig. 1, a crankshaft sprocket 4 of a marine low-speed diesel engine is mounted on a shaft body 6 in a shrink-fit manner (the sprocket 4 is heated first and then sleeved on the shaft body 6 and then cooled to achieve interference fit), and after the sprocket 4 is cooled, a situation that the interference fit between the sprocket and the crankshaft does not reach the standard may exist locally.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a local adjusting method for interference fit installation of a crankshaft and a chain wheel aiming at the condition that the local fit of the crankshaft and the chain wheel of a marine low-speed diesel engine does not reach the standard.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a local adjustment method for the interference fit installation of a crankshaft and a chain wheel is characterized in that the chain wheel of the crankshaft is fixedly installed on a shaft body of the crankshaft in an interference fit manner through a shrink fit process, and the method comprises the following steps: and locally and rapidly heating the position of the chain wheel which is not up to the standard in the matching process with the crankshaft, and applying force to the chain wheel by using a hydraulic jack after the temperature reaches the rated temperature to enable the chain wheel to generate local displacement until the interference fit data of the chain wheel and the crankshaft reach the standard.
Further, the local adjustment method comprises the following steps:
1) confirming the local position of the chain wheel which does not reach the standard in interference fit with the crankshaft according to the measurement data;
2) fixing the crawler-type heating plates on two sides of the tooth end surface of the local position on the chain wheel which does not reach the standard by using a C-shaped clamp, and heating;
3) measuring the temperature of the chain wheel by directly using a point thermometer, and installing a hydraulic jack between the chain wheel and a flywheel of the crankshaft when the chain wheel reaches a rated temperature;
4) applying force to the local position which does not reach the standard on the chain wheel by using a fixed flywheel through a hydraulic jack to ensure that the local position of the chain wheel is displaced, adjusting the local position of the chain wheel in place, and eliminating the matching deviation of the chain wheel and the crankshaft until the interference fit data of the chain wheel and the crankshaft reach the standard;
5) stopping heating, retesting the interference fit data of bent axle and sprocket after the sprocket cools off, confirm to reach standard after demolish crawler-type hot plate, C type anchor clamps and hydraulic jack.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, by means of the method of local heating and adjustment under the thermal state condition, the problem that the interference fit between the crankshaft and the chain wheel does not reach the standard is solved, the quality defect of the product is eliminated, and the assembly of the crankshaft and the chain wheel is ensured to meet the requirement of a drawing.
2. The local adjustment method is simple and feasible and has strong operability.
3. The invention improves the quality of the whole product of the low-speed diesel engine for the ship.
Drawings
FIG. 1 is a schematic view of the mating mounting of a crankshaft and a sprocket.
FIG. 2 is a schematic illustration of a method of partial adjustment of a crankshaft sprocket.
Fig. 3 is a method sequence diagram of the present invention.
In the figure, 1 is a crawler-type heating plate, 2 is a C-shaped clamp, 3 is a hydraulic jack, 4 is a chain wheel, 5 is a flywheel, and 6 is a shaft body.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific examples, but the scope of the present invention is not limited to the examples described below.
The local adjusting method for the interference fit installation of the crankshaft and the chain wheel is used for locally and quickly heating the position where the fit of the chain wheel and the crankshaft does not reach the standard, and after the temperature reaches the rated temperature, a hydraulic jack is used for applying force to the chain wheel, so that the chain wheel generates local displacement until the interference fit data of the chain wheel and the crankshaft reach the standard.
Referring to fig. 2 and fig. 3, the local adjustment method includes the following steps:
1) confirming the local position of the chain wheel 4 which does not reach the standard in interference fit with the crankshaft according to the measurement data;
2) fixing the crawler-type heating plates 1 on two sides of the tooth end surface of the local position on the chain wheel which does not reach the standard by using a C-shaped clamp 2, and heating;
3) measuring the temperature of the chain wheel 4 by directly using a point thermometer, and installing a hydraulic jack 3 between the chain wheel 4 and a flywheel 5 of the crankshaft when the chain wheel 4 reaches a rated temperature;
4) the hydraulic jack 3 applies force to the local position on the chain wheel 4 which does not reach the standard by virtue of the fixed flywheel 5, so that the local position of the chain wheel 4 is displaced, the local position of the chain wheel 4 is adjusted in place, and the fit deviation of the chain wheel 4 and the crankshaft is eliminated until the interference fit data of the chain wheel 4 and the crankshaft reach the standard;
5) stopping heating and waiting after sprocket 4 cools off, retest the interference fit data of bent axle and sprocket 4, confirm to reach standard after demolish crawler-type hot plate 1, C type anchor clamps 2 and hydraulic jack 3.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be within the technical scope of the present invention.
Claims (2)
1. A local adjustment method for the interference fit installation of a crankshaft and a chain wheel is characterized in that the chain wheel of the crankshaft is fixedly installed on a shaft body of the crankshaft in an interference fit manner through a shrink fit process, and the method comprises the following steps: and locally and rapidly heating the position of the chain wheel which is not up to the standard in the matching process with the crankshaft, and applying force to the chain wheel by using a hydraulic jack after the temperature reaches the rated temperature to enable the chain wheel to generate local displacement until the interference fit data of the chain wheel and the crankshaft reach the standard.
2. The local adjustment method for an interference fit mounting of a crankshaft and a sprocket of claim 1, wherein: the local adjustment method comprises the following steps:
1) confirming the local position of the chain wheel which does not reach the standard in interference fit with the crankshaft according to the measurement data;
2) fixing the crawler-type heating plates on two sides of the tooth end surface of the local position on the chain wheel which does not reach the standard by using a C-shaped clamp, and heating;
3) measuring the temperature of the chain wheel by directly using a point thermometer, and installing a hydraulic jack between the chain wheel and a flywheel of the crankshaft when the chain wheel reaches a rated temperature;
4) applying force to the local position which does not reach the standard on the chain wheel by using a fixed flywheel through a hydraulic jack to ensure that the local position of the chain wheel is displaced, adjusting the local position of the chain wheel in place, and eliminating the matching deviation of the chain wheel and the crankshaft until the interference fit data of the chain wheel and the crankshaft reach the standard;
5) stopping heating, retesting the interference fit data of bent axle and sprocket after the sprocket cools off, confirm to reach standard after demolish crawler-type hot plate, C type anchor clamps and hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910997391.1A CN110653591A (en) | 2019-10-21 | 2019-10-21 | Local adjusting method for interference fit installation of crankshaft and chain wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910997391.1A CN110653591A (en) | 2019-10-21 | 2019-10-21 | Local adjusting method for interference fit installation of crankshaft and chain wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110653591A true CN110653591A (en) | 2020-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910997391.1A Withdrawn CN110653591A (en) | 2019-10-21 | 2019-10-21 | Local adjusting method for interference fit installation of crankshaft and chain wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110653591A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810962A (en) * | 2022-05-23 | 2022-07-29 | 中国农业大学 | Semi-circulating ball type chain wheel position adjusting device and adjusting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090080621A (en) * | 2008-01-22 | 2009-07-27 | 소닉스코리아(주) | Insert Method of Metal Nut Using Induction Heater |
| CN101493856A (en) * | 2009-02-18 | 2009-07-29 | 中国科学院金属研究所 | Reconfiguration method in shrinkingon process of crankshaft for studying ship and measure for preventing deformation |
| EP2196280A2 (en) * | 2008-12-11 | 2010-06-16 | Robert Bosch GmbH | Method and device for joining components together |
| CN104002095A (en) * | 2013-02-25 | 2014-08-27 | 上海船用曲轴有限公司 | Assembly method of crankshaft for large semi-built-up ship |
| CN105345454A (en) * | 2015-12-02 | 2016-02-24 | 东方电气风电有限公司 | Main shaft bearing assembly deviation correcting system for main shaft of wind turbine generating set |
| CN109623260A (en) * | 2018-11-13 | 2019-04-16 | 上海五钢设备工程有限公司 | Step locks extrusion cylinder hot-assembling method |
-
2019
- 2019-10-21 CN CN201910997391.1A patent/CN110653591A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090080621A (en) * | 2008-01-22 | 2009-07-27 | 소닉스코리아(주) | Insert Method of Metal Nut Using Induction Heater |
| EP2196280A2 (en) * | 2008-12-11 | 2010-06-16 | Robert Bosch GmbH | Method and device for joining components together |
| CN101493856A (en) * | 2009-02-18 | 2009-07-29 | 中国科学院金属研究所 | Reconfiguration method in shrinkingon process of crankshaft for studying ship and measure for preventing deformation |
| CN104002095A (en) * | 2013-02-25 | 2014-08-27 | 上海船用曲轴有限公司 | Assembly method of crankshaft for large semi-built-up ship |
| CN105345454A (en) * | 2015-12-02 | 2016-02-24 | 东方电气风电有限公司 | Main shaft bearing assembly deviation correcting system for main shaft of wind turbine generating set |
| CN109623260A (en) * | 2018-11-13 | 2019-04-16 | 上海五钢设备工程有限公司 | Step locks extrusion cylinder hot-assembling method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810962A (en) * | 2022-05-23 | 2022-07-29 | 中国农业大学 | Semi-circulating ball type chain wheel position adjusting device and adjusting method |
| CN114810962B (en) * | 2022-05-23 | 2024-05-24 | 中国农业大学 | Semi-circulation ball type chain wheel position adjusting device and adjusting method |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200107 |
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