CN112439906B - Machining process of bearing ring in diesel engine - Google Patents
Machining process of bearing ring in diesel engine Download PDFInfo
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- CN112439906B CN112439906B CN202011267476.3A CN202011267476A CN112439906B CN 112439906 B CN112439906 B CN 112439906B CN 202011267476 A CN202011267476 A CN 202011267476A CN 112439906 B CN112439906 B CN 112439906B
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- aluminum ring
- ring
- aluminum
- turning
- machining
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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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
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2220/00—Details of turning, boring or drilling processes
- B23B2220/44—Roughing
- B23B2220/445—Roughing and finishing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/04—Aluminium
Abstract
The invention discloses a processing technology of a bearing ring in a diesel engine, which comprises the following processing steps: (1) roughly turning to obtain an aluminum ring; (2) turning an inner hole of the aluminum ring, and chamfering the inner hole of the aluminum ring; (3) manufacturing an excircle turning tool; (4) clamping the aluminum ring through an excircle turning tool, and then turning an excircle of the aluminum ring; (5) milling oil grooves on two end faces of the aluminum ring through a machining center; (6) manufacturing an end face turning tool; (7) clamping the aluminum ring through an end face turning tool, and then turning the end face of the aluminum ring; finally, the bearing ring can be obtained. By adopting the processing technology, the processing precision of the aluminum ring can be prevented from being influenced due to clamping deformation, and finally, the end face turning is left independently, so that the processing precision of the end face can be prevented from being influenced by other characteristic processing, and the flatness tolerance of the two end faces of the bearing ring can be ensured to reach 0.02 mm.
Description
Technical Field
The invention relates to the field of workpiece processing technologies, in particular to a processing technology of a bearing ring in a diesel engine.
Background
A bearing ring in a diesel engine is an aluminum ring, oil grooves need to be machined on two end faces of the bearing ring respectively, the flatness tolerance of the two end faces of the bearing ring needs to reach 0.02mm, but the bearing ring is easy to deform during machining and clamping due to the fact that the bearing ring is small in size, thin in thickness and soft in material, and therefore the flatness tolerance of the bearing ring is difficult to reach 0.02mm and can only reach 0.05mm generally.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the machining process of the bearing ring in the diesel engine can enable the flatness tolerance of two end faces of the bearing ring to reach 0.02 mm.
In order to solve the problems, the technical scheme adopted by the invention is as follows: the machining process of the bearing ring in the diesel engine is characterized in that: the process comprises the following steps:
(1) roughly turning the aluminum material to obtain an aluminum ring;
(2) clamping an aluminum ring on a chuck of a lathe, turning an inner hole of the aluminum ring, turning the size of the inner hole of the aluminum ring to the size required by a product, turning a chamfer angle of one port of the inner hole of the aluminum ring according to the size of the product after the inner hole is turned, turning the aluminum ring and re-clamping, turning the chamfer angle of the other port of the inner hole of the aluminum ring according to the size of the product, wherein the bevel angle slopes of two ends of the inner hole of the aluminum ring are equal;
(3) make cylindrical turning frock, cylindrical turning frock includes: the outer end of the core rod is machined with a cylindrical section;
(4) clamping the core rod on a chuck of a lathe, sleeving all the aluminum rings with inner bores turned on a cylindrical section together, radially positioning all the aluminum rings by the cylindrical section, covering a clamping cap on the outer end of the cylindrical section, and propping the clamping cap through a tip on a lathe tailstock so that all the aluminum rings can be tightly abutted against each other and clamped and fixed on the cylindrical section; turning the outer diameters of the aluminum rings to the required size of the product by a lathe;
(5) inserting a positioning boss on a workbench of a machining center into an inner hole of an aluminum ring to position the aluminum ring on the workbench, then pressing the aluminum ring through a pressing plate to fix the aluminum ring on the workbench, then milling the upward end face of the aluminum ring through the machining center, machining an oil groove on one end face of the aluminum ring, turning over the aluminum ring and repositioning and fixing the aluminum ring, and then milling the upward end face of the aluminum ring through the machining center, so machining an oil groove on the other end face of the aluminum ring;
(6) make facing frock, facing frock includes: the clamping device comprises a clamping cylinder and a positioning cover plate, wherein a round positioning step is machined on the outer end face of the clamping cylinder in a turning mode, and a threaded hole coaxial with the positioning step is machined in the center of the outer end of the clamping cylinder; the positioning cover plate is a circular plate, the inner edge of the outer ring of the positioning cover plate is chamfered with an oblique angle with the inclination equal to that of a chamfer angle on the port of the inner hole of the aluminum ring, the diameter of the positioning cover plate is larger than the inner diameter of the aluminum ring but smaller than the outermost ring of the chamfer angle of the port of the inner hole of the aluminum ring, and in addition, a bolt hole is processed at the axis of the positioning cover plate;
(7) clamping the clamping cylinder on a chuck of a lathe, sleeving the aluminum ring on the positioning step, radially positioning the aluminum ring by the positioning step, attaching the positioning cover plate to the aluminum ring by a chamfer on the edge of the outer ring and a chamfer on the port of an inner hole of the aluminum ring, locking and pressing the positioning cover plate on the aluminum ring by passing a bolt hole through a threaded hole screwed in the threaded hole through a bolt, fixing the aluminum ring on the clamping cylinder, turning the outward end surface of the aluminum ring according to the product size by the lathe, turning the outward end surface of the aluminum ring and re-positioning and fixing the aluminum ring after turning one end surface, turning the outward end surface of the aluminum ring according to the product size by the lathe, finishing the end surface processing of the other end surface of the aluminum ring, and finally obtaining the bearing ring with the required size.
Further, in the foregoing process for machining a bearing ring in a diesel engine,: the aperture of the bolt hole is 2mm larger than that of the threaded hole.
Further, in the foregoing process for machining a bearing ring in a diesel engine,: the diameter of the positioning cover plate is 1mm smaller than the outermost circle of the chamfer angle of the inner hole port of the aluminum ring.
Further, in the foregoing process for machining a bearing ring in a diesel engine,: the positioning cover plate is made of aluminum.
Further, in the foregoing process for machining a bearing ring in a diesel engine,: the positioning step and the threaded hole on the clamping cylinder are obtained through lathe machining, the clamping cylinder only carries out one-time clamping in the process of machining the positioning step and the threaded hole, and the clamping cylinder is not taken down from the lathe and is directly used for machining the aluminum ring after the positioning step and the threaded hole are obtained through machining.
The invention has the advantages that: by adopting the processing technology of the bearing ring in the diesel engine, the processing precision of the aluminum ring can be prevented from being influenced by clamping deformation, and the end face turning is left to the end, so that the processing precision of the end face can be prevented from being influenced by other characteristic processing, and the flatness tolerance of the two end faces of the bearing ring can reach 0.02 mm.
Drawings
Fig. 1 is a schematic structural diagram of the external cylindrical turning tool of the present invention.
Fig. 2 is a schematic structural view of the end face turning tool of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and the attached drawings.
The machining process of the bearing ring in the diesel engine comprises the following process steps:
(1) roughly turning the aluminum material to obtain an aluminum ring;
(2) clamping an aluminum ring on a chuck of a lathe, turning an inner hole of the aluminum ring, turning the size of the inner hole of the aluminum ring to the size required by a product, turning a chamfer angle of one port of the inner hole of the aluminum ring according to the size of the product after the inner hole is turned, turning the aluminum ring and re-clamping, turning the chamfer angle of the other port of the inner hole of the aluminum ring according to the size of the product, wherein the bevel angle slopes of two ends of the inner hole of the aluminum ring are equal;
(3) as shown in fig. 1, the excircle turning frock is made, and the excircle turning frock includes: the outer end of the core rod 1 is provided with a cylindrical section 11 by turning;
(4) the core rod 1 is clamped on a chuck of a lathe, then all the aluminum rings 3 of which the inner holes are turned are sleeved on a cylindrical section 11 together, the cylindrical section 11 can radially position all the aluminum rings 3, then a clamping cap 2 is sleeved on the outer end of the cylindrical section 11, and the clamping cap 2 is propped against by a tip on a lathe tailstock, so that all the aluminum rings 3 can be tightly and tightly clamped and fixed on the cylindrical section 11; turning the outer diameter of each aluminum ring 3 to the required size of the product by a lathe; the outer diameter of the aluminum rings 3 can be turned together after the excircle turning tool is adopted, so that the machining efficiency can be improved, in addition, the excircle turning process cannot clamp the aluminum rings in a manner that a chuck clamps the outer rings of the aluminum rings, the excircle turning is not only hindered, but also the aluminum rings are easy to deform, the excircle turning tool clamps the aluminum rings in a manner of oppositely clamping end faces, so that the aluminum rings can be turned while the deformation of the aluminum rings due to clamping is avoided, and the machining precision of the aluminum rings can be improved;
(5) inserting a positioning boss on a workbench of a machining center into an inner hole of an aluminum ring to position the aluminum ring on the workbench, then pressing the aluminum ring through a pressing plate to fix the aluminum ring on the workbench, then milling the upward end face of the aluminum ring through the machining center, machining an oil groove on one end face of the aluminum ring, turning over the aluminum ring and repositioning and fixing the aluminum ring, and then milling the upward end face of the aluminum ring through the machining center, so machining an oil groove on the other end face of the aluminum ring;
(6) as shown in fig. 2, the facing tool is manufactured and includes: the clamping device comprises a clamping cylinder 4 and a positioning cover plate 5, wherein a round positioning step 41 is turned on the outer end face of the clamping cylinder 4, and a threaded hole 42 which is coaxial with the positioning step 41 is formed in the center of the outer end of the clamping cylinder 4; the positioning cover plate 5 is a circular plate, the inner edge of the outer ring of the positioning cover plate 5 is chamfered with an oblique angle with the inclination equal to that of the chamfer angle on the inner hole port of the aluminum ring 3, the diameter of the positioning cover plate 5 is larger than the inner diameter of the aluminum ring 3 but smaller than the outermost ring of the chamfer angle of the inner hole port of the aluminum ring 3, and in addition, a bolt hole 51 is processed at the axis of the positioning cover plate 5;
(7) the clamping cylinder 4 is clamped on a chuck of a lathe, then the aluminum ring 3 is sleeved on the positioning step 41, the positioning step 41 can radially position the aluminum ring 3, then the positioning cover plate 5 is attached to the aluminum ring 3 by the chamfer on the edge of the outer ring and the chamfer on the port of the inner hole of the aluminum ring 3, then the positioning cover plate 5 is tightly pressed on the aluminum ring 3 by screwing the bolts 6 into the threaded holes 42 through the bolt holes 51, thereby fixing the aluminum ring 3 on the clamping cylinder 4, then, the end surface of the aluminum ring 3 facing outwards is turned by a lathe according to the size of the product, the aluminum ring 3 is turned over and positioned and fixed again after one end surface is turned, and then, turning the outward end face of the aluminum ring 3 by a lathe according to the size of the product so as to finish the end face turning of the other end face of the aluminum ring 3, and finally obtaining the bearing ring with the required size.
The end face of the aluminum ring 3 can be machined after the aluminum ring 3 is directly clamped on a chuck on a lathe, but the aluminum ring is deformed by clamping the aluminum ring by the chuck, so that the flatness tolerance of the two end faces of the machined aluminum ring cannot be guaranteed; the positioning cover plate 5 can achieve the purpose of not interfering the turning of the end face of the aluminum ring 3 after being pressed on the chamfer on the port of the inner hole of the aluminum ring 3, and can not deform the aluminum ring 3, thereby improving the processing precision of the aluminum ring.
In this embodiment, the positioning step 41 and the threaded hole 42 on the clamping cylinder 4 are both obtained by lathe machining, in the process of machining the positioning step 41 and the threaded hole 42, the clamping cylinder 4 is only clamped once, and after the positioning step 41 and the threaded hole 42 are obtained by machining, the clamping cylinder 4 is directly used for machining the aluminum ring 3 without being taken down from the lathe.
The positioning step 41 and the threaded hole 42 are processed separately or the clamping cylinder 4 is clamped for multiple times, so that the processed positioning step 41 and the processed threaded hole 42 are not coaxial, the positioning cover plate 5 cannot press all parts of the aluminum ring uniformly, and the processing precision of the aluminum ring is affected; after the positioning step 41 and the threaded hole 42 are machined, if the clamping cylinder 4 is taken down and then clamped again, the positioning step 41 and the threaded hole 42 are not coaxial with the lathe spindle due to clamping errors, and thus the machining precision of the aluminum ring is also affected.
The hole diameter of the bolt hole 51 is 2mm larger than that of the threaded hole 42, and the arrangement is to enable the positioning cover plate 5 to slide in the pressing and locking process so as to adjust the position, so that the positioning cover plate 5 can be pressed on the chamfer on the inner hole port of the aluminum ring 3 in a relatively fitting manner, and the purpose of uniform pressing is achieved.
The diameter of the positioning cover plate 5 is 1mm smaller than the minimum outer ring of the chamfer angle of the inner hole port of the aluminum ring 3, and the positioning cover plate is arranged so as not to obstruct the end face of the vehicle.
The positioning cover plate 5 is made of aluminum, and the aluminum is soft, so that the chamfer of the aluminum ring can be prevented from being pressed to form marks.
Claims (5)
1. The machining process of the bearing ring in the diesel engine is characterized in that: the process comprises the following steps:
(1) roughly turning the aluminum material to obtain an aluminum ring;
(2) clamping an aluminum ring on a chuck of a lathe, turning an inner hole of the aluminum ring, turning the size of the inner hole of the aluminum ring to the size required by a product, turning a chamfer angle of one port of the inner hole of the aluminum ring according to the size of the product after the inner hole is turned, turning the aluminum ring and re-clamping, turning the chamfer angle of the other port of the inner hole of the aluminum ring according to the size of the product, wherein the bevel angle slopes of two ends of the inner hole of the aluminum ring are equal;
(3) make cylindrical turning frock, cylindrical turning frock includes: the outer end of the core rod is machined with a cylindrical section;
(4) clamping the core rod on a chuck of a lathe, sleeving all the aluminum rings with inner bores turned on a cylindrical section together, radially positioning all the aluminum rings by the cylindrical section, covering a clamping cap on the outer end of the cylindrical section, and propping the clamping cap through a tip on a lathe tailstock so that all the aluminum rings can be tightly abutted against each other and clamped and fixed on the cylindrical section; turning the outer diameters of the aluminum rings to the required size of the product by a lathe;
(5) inserting a positioning boss on a workbench of a machining center into an inner hole of an aluminum ring to position the aluminum ring on the workbench, then pressing the aluminum ring through a pressing plate to fix the aluminum ring on the workbench, then milling the upward end face of the aluminum ring through the machining center, machining an oil groove on one end face of the aluminum ring, turning over the aluminum ring and repositioning and fixing the aluminum ring, and then milling the upward end face of the aluminum ring through the machining center, so machining an oil groove on the other end face of the aluminum ring;
(6) make facing frock, facing frock includes: the clamping device comprises a clamping cylinder and a positioning cover plate, wherein a round positioning step is machined on the outer end face of the clamping cylinder in a turning mode, and a threaded hole coaxial with the positioning step is machined in the center of the outer end of the clamping cylinder; the positioning cover plate is a circular plate, the inner edge of the outer ring of the positioning cover plate is chamfered with an oblique angle with the inclination equal to that of a chamfer angle on the port of the inner hole of the aluminum ring, the diameter of the positioning cover plate is larger than the inner diameter of the aluminum ring but smaller than the outermost ring of the chamfer angle of the port of the inner hole of the aluminum ring, and in addition, a bolt hole is processed at the axis of the positioning cover plate;
(7) clamping the clamping cylinder on a chuck of a lathe, sleeving the aluminum ring on the positioning step, radially positioning the aluminum ring by the positioning step, attaching the positioning cover plate to the aluminum ring by a chamfer on the edge of the outer ring and a chamfer on the port of an inner hole of the aluminum ring, locking and pressing the positioning cover plate on the aluminum ring by passing a bolt hole through a threaded hole screwed in the threaded hole through a bolt, fixing the aluminum ring on the clamping cylinder, turning the outward end surface of the aluminum ring according to the product size by the lathe, turning the outward end surface of the aluminum ring and re-positioning and fixing the aluminum ring after turning one end surface, turning the outward end surface of the aluminum ring according to the product size by the lathe, finishing the end surface processing of the other end surface of the aluminum ring, and finally obtaining the bearing ring with the required size.
2. The process for machining a bearing ring in a diesel engine according to claim 1, wherein: the aperture of the bolt hole is 2mm larger than that of the threaded hole.
3. The process for machining a bearing ring in a diesel engine according to claim 1, wherein: the diameter of the positioning cover plate is 1mm smaller than the outermost circle of the chamfer angle of the inner hole port of the aluminum ring.
4. The process for machining a bearing ring in a diesel engine according to claim 1, wherein: the positioning cover plate is made of aluminum.
5. The process for machining a bearing ring in a diesel engine according to claim 1, wherein: the positioning step and the threaded hole on the clamping cylinder are obtained through lathe machining, the clamping cylinder only carries out one-time clamping in the process of machining the positioning step and the threaded hole, and the clamping cylinder is not taken down from the lathe and is directly used for machining the aluminum ring after the positioning step and the threaded hole are obtained through machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011267476.3A CN112439906B (en) | 2020-11-13 | 2020-11-13 | Machining process of bearing ring in diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011267476.3A CN112439906B (en) | 2020-11-13 | 2020-11-13 | Machining process of bearing ring in diesel engine |
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| Publication Number | Publication Date |
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| CN112439906A CN112439906A (en) | 2021-03-05 |
| CN112439906B true CN112439906B (en) | 2022-05-20 |
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| CN114042941A (en) * | 2021-12-03 | 2022-02-15 | 内蒙古航天红岗机械有限公司 | Turning device and method for aluminum film gasket part |
| CN115070066B (en) * | 2022-07-27 | 2024-04-05 | 抚顺煤矿电机制造有限责任公司 | Turning method of motor end cover |
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| CN1267247A (en) * | 1997-08-04 | 2000-09-20 | 曼内斯曼股份公司 | Method for producing steel rolling bearing rings |
| CN102179529A (en) * | 2011-04-27 | 2011-09-14 | 洛阳轴研科技股份有限公司 | Method and gasket for assisting in processing inner and outer diameters of deep groove ball bearing retainer |
| CN104174871A (en) * | 2014-07-30 | 2014-12-03 | 梧州市旺捷机械制造有限公司 | Processing method of thin aluminum piece |
| CN106694906A (en) * | 2015-11-13 | 2017-05-24 | 首都航天机械公司 | Machining method of large-diameter thin-wall furcated ring |
| JP2018108628A (en) * | 2017-01-05 | 2018-07-12 | 三菱電機株式会社 | Groove processing device of sheave and groove processing method of sheave |
| CN108772737A (en) * | 2018-06-04 | 2018-11-09 | 成都久和建设设备有限责任公司 | A kind of bearing block turning process and its frock clamp |
-
2020
- 2020-11-13 CN CN202011267476.3A patent/CN112439906B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267247A (en) * | 1997-08-04 | 2000-09-20 | 曼内斯曼股份公司 | Method for producing steel rolling bearing rings |
| CN102179529A (en) * | 2011-04-27 | 2011-09-14 | 洛阳轴研科技股份有限公司 | Method and gasket for assisting in processing inner and outer diameters of deep groove ball bearing retainer |
| CN104174871A (en) * | 2014-07-30 | 2014-12-03 | 梧州市旺捷机械制造有限公司 | Processing method of thin aluminum piece |
| CN106694906A (en) * | 2015-11-13 | 2017-05-24 | 首都航天机械公司 | Machining method of large-diameter thin-wall furcated ring |
| JP2018108628A (en) * | 2017-01-05 | 2018-07-12 | 三菱電機株式会社 | Groove processing device of sheave and groove processing method of sheave |
| CN108772737A (en) * | 2018-06-04 | 2018-11-09 | 成都久和建设设备有限责任公司 | A kind of bearing block turning process and its frock clamp |
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