CN113829094A - Crankshaft center hole machining process - Google Patents
Crankshaft center hole machining process Download PDFInfo
- Publication number
- CN113829094A CN113829094A CN202111222602.8A CN202111222602A CN113829094A CN 113829094 A CN113829094 A CN 113829094A CN 202111222602 A CN202111222602 A CN 202111222602A CN 113829094 A CN113829094 A CN 113829094A
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- China
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- journal
- crankshaft
- processing
- center hole
- lug
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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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- 238000003754 machining Methods 0.000 title claims description 16
- 238000000034 method Methods 0.000 claims abstract description 51
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 210000003739 neck Anatomy 0.000 description 10
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
Abstract
The invention relates to the technical field of center hole processing, and provides a crankshaft center hole processing technology, wherein a front journal and a rear journal of a crankshaft are coaxially provided with a process lug, and the crankshaft center hole processing technology comprises the following steps: s1, processing a first central hole on the end face of a process lug; and S2, processing a second central hole on the end face of the process lug or the end face of the shaft neck in the first central hole. The invention adds the process lug on the front journal and the rear journal, and processes the first center hole on the process lug, thereby causing the two center holes to be staggered in spatial position, so as to realize that when the eccentricity between the connecting rod journal and the main journal is smaller, the center holes corresponding to the connecting rod journal and the main journal can be respectively processed on the front journal and the rear journal at the two ends of the crankshaft, which is beneficial to further processing the crankshaft subsequently, and saves the eccentric tool needed by the subsequent processing of the crankshaft, thereby simplifying the processing process to improve the processing efficiency, and being capable of reliably ensuring the quality of the crankshaft after the processing is finished.
Description
Technical Field
The invention relates to the technical field of center hole machining, in particular to a crankshaft center hole machining process.
Background
The crankshaft is one of the important parts in the engine and is used for bearing the force transmitted by the connecting rod and converting the force into torque to drive other accessories on the engine to work. The crankshaft is typically comprised of front, main, connecting rod, crank, and rear journals.
In the process of processing the crankshaft, center holes corresponding to the main journal and the connecting rod journal respectively are processed on the end faces of the front journal and the rear journal at two ends of the crankshaft, so that the crankshaft is fixed through a tip when the excircle of the journal is finely ground. However, in the actual processing process, it is found that when the eccentricity between the center hole of the connecting rod journal and the center hole of the main journal is small, it is difficult to simultaneously process the center holes corresponding to the main journal and the connecting rod journal on the end faces of the front journal and the rear journal of the crankshaft, and at this time, if the subsequent processing of the crankshaft needs to be completed, an additional eccentric tool needs to be used for realization, and this processing mode is not only complicated in process and low in processing efficiency, but also the eccentric tool is difficult to ensure the processing quality of the crankshaft.
Disclosure of Invention
The invention aims to provide a crankshaft center hole machining process, which can realize machining of a corresponding center hole when the eccentricity between a connecting rod journal and a main journal is small, is beneficial to further machining of a crankshaft subsequently and ensures the quality of the crankshaft after machining is finished.
The embodiment of the invention is realized by the following technical scheme:
the utility model provides a bent axle centre bore processing technology, the axle journal at bent axle both ends all is provided with the technology lug coaxially, includes the following step:
s1, processing a first central hole on the end face of the process lug;
and S2, processing a second central hole on the end face of the process lug or the end face of the shaft neck in the first central hole.
Optionally, the first central hole penetrates through the process lug, and the second central hole is machined in the end face of the shaft neck.
Optionally, an axis of the first center hole coincides with an axis of a connecting rod journal of the crankshaft, and an axis of the second center hole coincides with an axis of a main journal of the crankshaft.
Optionally, the diameter of the process lug is equal to the diameter of the shaft journals at the two ends of the crankshaft.
Optionally, during machining, the first center hole and the second center hole on the journal at one end of the crankshaft are machined, and the first center hole and the second center hole on the journal at the other end of the crankshaft are machined.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:
the invention adds the process lug on the front journal and the rear journal, and processes the first center hole on the process lug, thereby causing the two center holes to be staggered in spatial position, so as to realize that when the eccentricity between the connecting rod journal and the main journal is smaller, the center holes corresponding to the connecting rod journal and the main journal can be respectively processed on the front journal and the rear journal at the two ends of the crankshaft, which is beneficial to further processing the crankshaft subsequently, and saves the eccentric tool needed by the subsequent processing of the crankshaft, thereby simplifying the processing process to improve the processing efficiency, and being capable of reliably ensuring the quality of the crankshaft after the processing is finished.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a crankshaft provided in embodiment 1 of the present invention;
FIG. 2 is a partial cross-sectional view of a front journal provided in accordance with an embodiment of the present invention.
Icon: 1-front journal, 2-crank, 3-connecting rod journal, 4-main journal, 5-rear journal, 6-process lug, 100-first center hole and 200-second center hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in fig. 1, the conventional crankshaft generally comprises a front journal 1, a crank 2, a connecting rod journal 3, a main journal 4, a rear journal 5, and other components, and considering that when the eccentricity between the connecting rod journal 3 and the main journal 4 is small, two center holes interfere with each other when the center holes corresponding to the connecting rod journal 3 and the main journal 4 are machined in the end surfaces of the front journal 1 and the rear journal 5 by a conventional machining method, so that the machining operation cannot be completed smoothly.
Therefore, the embodiment provides a crankshaft center hole machining process to solve the problems. With continued reference to fig. 1, process lugs 6 are added to the journals at the two ends of the crankshaft. In the embodiment, the shaft necks at two ends of the crankshaft are respectively a front shaft neck 1 and a rear shaft neck 5, a process lug 6 additionally arranged on the front shaft neck 1 is coaxial with the front shaft neck 1, and a process lug 6 additionally arranged on the rear shaft neck 5 is coaxial with the rear shaft neck 5. The specific processing steps of the central hole comprise:
s1, referring to FIG. 2, after a crankshaft is fixed, a first central hole 100 is machined in the end face of a process lug 6;
s2, processing a second central hole 200 on the end face of the process lug 6 or the end face of the shaft neck in the first central hole 100.
It is to be understood that, when the center hole on the front journal 1 is machined, the second center hole 200 in step S2 is machined on the end face of the front journal 1; when the center hole in the rear journal 5 is machined, the second center hole 200 in step S2 is machined in the end face of the rear journal 5. Meanwhile, the aperture of the first central hole 100 should be large enough, and at this time, the area corresponding to the cross section of the first central hole 100 covers the second central hole 200, so that the second central hole 200 can be smoothly machined on the end surface of the process lug 6 inside the first central hole 100 or the end surface of the corresponding journal.
Therefore, in the embodiment, the process lug 6 is additionally arranged on the front journal 1 and the rear journal 5, and the first central hole 100 is processed on the process lug 6, so that the two central holes are staggered in spatial positions, and when the eccentricity between the connecting rod journal 3 and the main journal 4 is small, the central holes corresponding to the connecting rod journal 3 and the main journal 4 can be respectively processed on the front journal 1 and the rear journal 5 at the two ends of the crankshaft, thereby being beneficial to subsequent further processing of the crankshaft, omitting an eccentric tool required for subsequent processing of the crankshaft, simplifying the processing process to improve the processing efficiency, and reliably ensuring the quality of the crankshaft after processing.
With continued reference to fig. 2, the axis of the first center hole 100 may coincide with the axis of the connecting rod journal 3 of the crankshaft or may coincide with the axis of the main journal 4, and when the axis of the first center hole 100 coincides with the axis of the connecting rod journal 3 of the crankshaft, the axis of the second center hole 200 coincides with the axis of the main journal 4; conversely, when the axis of the first center hole 100 coincides with the axis of the main journal 4 of the crankshaft, the axis of the second center hole 200 coincides with the axis of the connecting rod journal 3. Preferably, the axis of the first center hole 100 of the present embodiment coincides with the axis of the connecting rod journal 3 of the crankshaft, and the axis of the second center hole 200 coincides with the axis of the main journal 4, thereby further improving the machining accuracy.
Meanwhile, with reference to fig. 2, the first central hole 100 of the present embodiment may or may not penetrate through the process tab 6, and when the first central hole 100 does not penetrate through the process tab 6, an end surface of the process tab 6 inside the first central hole 100 needs to be a plane, so as to facilitate processing of the second central hole 200. In the present embodiment, in order to allow the second center hole 200 to remain on the end surface of the corresponding journal after the process lug 6 is removed, the above-described first center hole 100 penetrates the process lug 6, so that the second center hole 200 is machined on the end surfaces of the corresponding front journal 1 and rear journal 5.
Further, with continued reference to fig. 1 and fig. 2, the diameter of the process lug 6 in this embodiment is equal to the diameter of the journals at the two ends of the crankshaft, that is, the diameter of the process lug 6 disposed on the front journal 1 is equal to the diameter of the front journal 1, and the diameter of the process lug 6 disposed on the rear journal 5 is equal to the diameter of the rear journal 5, so as to further improve the stability of the crankshaft in the subsequent processing process and improve the reliability in the processing process.
Further, in the actual processing, the first center hole 100 and the second center hole 200 on the front journal 1 of the crankshaft may be processed, and the first center hole 100 and the second center hole 200 on the rear journal 5 of the crankshaft may be processed. Of course, the first and second center holes 100 and 200 may be simultaneously machined in the front journal 1 and the rear journal 5 of the crankshaft according to machining conditions in the field, and a specific machining sequence is not limited herein.
It should be noted that, when the first central hole 100 is machined, the first central hole 100 is machined in a turning manner, so that the machined first central hole 100 can penetrate through the process lug 6 and does not interfere with the end surface of the corresponding journal. Meanwhile, after all subsequent processing procedures of the crankshaft are finished, the process lug 6 on the front journal 1 and the rear journal 5 of the crankshaft needs to be removed in a turning mode so as to meet the requirement of a finished product.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a bent axle centre bore processing technology which characterized in that, all coaxial being provided with technology lug on the axle journal at bent axle both ends, includes following step:
s1, processing a first central hole on the end face of the process lug;
and S2, processing a second central hole on the end face of the process lug or the end face of the shaft neck in the first central hole.
2. The process for center hole machining of a crankshaft of claim 1, wherein said first center hole is formed through said process lug and said second center hole is machined in a journal end surface.
3. The process of claim 1 or 2, wherein the axis of the first center hole coincides with the axis of a connecting rod journal of the crankshaft, and the axis of the second center hole coincides with the axis of a main journal of the crankshaft.
4. The process of claim 1, wherein the diameter of the process lug is equal to the diameter of the journals at the two ends of the crankshaft.
5. The process of claim 1, wherein the first and second center holes are formed in a journal at one end of the crankshaft and the first and second center holes are formed in a journal at the other end of the crankshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222602.8A CN113829094A (en) | 2021-10-20 | 2021-10-20 | Crankshaft center hole machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222602.8A CN113829094A (en) | 2021-10-20 | 2021-10-20 | Crankshaft center hole machining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113829094A true CN113829094A (en) | 2021-12-24 |
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ID=78965602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111222602.8A Pending CN113829094A (en) | 2021-10-20 | 2021-10-20 | Crankshaft center hole machining process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113829094A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207120A (en) * | 1991-09-03 | 1993-05-04 | General Motors Corporation | Assembled crankshaft |
| CN1762624A (en) * | 2005-11-10 | 2006-04-26 | 贵州群建齿轮有限公司 | Process method of small eccentricity multi-eccentric and bidirectionally eccentric axle |
| CN101633106A (en) * | 2009-09-04 | 2010-01-27 | 宝钢集团苏州冶金机械厂 | Method for processing and detecting crankshaft key slot |
| CN201645175U (en) * | 2010-01-08 | 2010-11-24 | 宁波合力机泵有限公司 | Crankshaft and crank processing device for lathe |
| US20110197705A1 (en) * | 2008-11-10 | 2011-08-18 | Beijing Sinocep Engine Technology Co., Ltd. | Parts for crankshaft of internal combustion engine or compressor, crankshaft, internal combustion engine and compressor |
| CN102581647A (en) * | 2012-03-21 | 2012-07-18 | 山东冠泓数控装备有限公司 | Novel crankshaft machining fixture |
| CN102729002A (en) * | 2012-03-30 | 2012-10-17 | 北京中清能发动机技术有限公司 | Method for machining combined crankshaft of crank round slide block and special clamp therefor |
| CN203003502U (en) * | 2012-11-07 | 2013-06-19 | 浙江弘道科技有限公司 | Workpiece clamping sleeve |
| CN103273286A (en) * | 2013-06-18 | 2013-09-04 | 南车戚墅堰机车车辆工艺研究所有限公司 | Crankshaft machining method and special tool for crankshaft machining |
| CN204524841U (en) * | 2015-03-04 | 2015-08-05 | 上海大隆机器厂有限公司 | For the eccentric clamp of crank shaft of bent axle car eccentric throw processing |
| CN205520640U (en) * | 2016-04-29 | 2016-08-31 | 浙江兴昌风机有限公司 | Crankshaft machining anchor clamps |
| CN205630066U (en) * | 2016-05-10 | 2016-10-12 | 沃得精机(中国)有限公司 | Press crankshaft machining complete set anchor clamps |
| CN106736322A (en) * | 2017-01-22 | 2017-05-31 | 重庆大学 | The manufacturing process of integrated full-complement cylinder roller crankshaft unit |
| CN108817872A (en) * | 2018-07-16 | 2018-11-16 | 芜湖肯昌机电有限公司 | A kind of processing technology for the machine crankshaft that generates electricity |
| CN108907634A (en) * | 2018-08-01 | 2018-11-30 | 广西玉柴机器股份有限公司 | The quickly process of manufacture six-cylinder engine crankshaft |
-
2021
- 2021-10-20 CN CN202111222602.8A patent/CN113829094A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207120A (en) * | 1991-09-03 | 1993-05-04 | General Motors Corporation | Assembled crankshaft |
| CN1762624A (en) * | 2005-11-10 | 2006-04-26 | 贵州群建齿轮有限公司 | Process method of small eccentricity multi-eccentric and bidirectionally eccentric axle |
| US20110197705A1 (en) * | 2008-11-10 | 2011-08-18 | Beijing Sinocep Engine Technology Co., Ltd. | Parts for crankshaft of internal combustion engine or compressor, crankshaft, internal combustion engine and compressor |
| CN101633106A (en) * | 2009-09-04 | 2010-01-27 | 宝钢集团苏州冶金机械厂 | Method for processing and detecting crankshaft key slot |
| CN201645175U (en) * | 2010-01-08 | 2010-11-24 | 宁波合力机泵有限公司 | Crankshaft and crank processing device for lathe |
| CN102581647A (en) * | 2012-03-21 | 2012-07-18 | 山东冠泓数控装备有限公司 | Novel crankshaft machining fixture |
| CN102729002A (en) * | 2012-03-30 | 2012-10-17 | 北京中清能发动机技术有限公司 | Method for machining combined crankshaft of crank round slide block and special clamp therefor |
| CN203003502U (en) * | 2012-11-07 | 2013-06-19 | 浙江弘道科技有限公司 | Workpiece clamping sleeve |
| CN103273286A (en) * | 2013-06-18 | 2013-09-04 | 南车戚墅堰机车车辆工艺研究所有限公司 | Crankshaft machining method and special tool for crankshaft machining |
| CN204524841U (en) * | 2015-03-04 | 2015-08-05 | 上海大隆机器厂有限公司 | For the eccentric clamp of crank shaft of bent axle car eccentric throw processing |
| CN205520640U (en) * | 2016-04-29 | 2016-08-31 | 浙江兴昌风机有限公司 | Crankshaft machining anchor clamps |
| CN205630066U (en) * | 2016-05-10 | 2016-10-12 | 沃得精机(中国)有限公司 | Press crankshaft machining complete set anchor clamps |
| CN106736322A (en) * | 2017-01-22 | 2017-05-31 | 重庆大学 | The manufacturing process of integrated full-complement cylinder roller crankshaft unit |
| CN108817872A (en) * | 2018-07-16 | 2018-11-16 | 芜湖肯昌机电有限公司 | A kind of processing technology for the machine crankshaft that generates electricity |
| CN108907634A (en) * | 2018-08-01 | 2018-11-30 | 广西玉柴机器股份有限公司 | The quickly process of manufacture six-cylinder engine crankshaft |
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