CN114473375A - Processing technology of inner ring and outer ring of ultrathin bearing - Google Patents
Processing technology of inner ring and outer ring of ultrathin bearing Download PDFInfo
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- CN114473375A CN114473375A CN202111679907.1A CN202111679907A CN114473375A CN 114473375 A CN114473375 A CN 114473375A CN 202111679907 A CN202111679907 A CN 202111679907A CN 114473375 A CN114473375 A CN 114473375A
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- turning
- inner cavity
- bearing
- ring
- chamfer
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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
Abstract
A processing technology of an inner ring and an outer ring of an ultrathin bearing comprises the following steps: 1) cutting the long tube bar into straight sections with required sizes by a cutting machine according to design requirements; 2) roughly turning the cut straight stock section blank by using a claw disc jig, and reserving a margin of 0.5mm in the inner cavity; 3) then, supporting the inner cavity after the step 2) by using an inner cavity positioning jig, and carrying out vacuum heat treatment until the surface hardness is HRC 60-65; 4) after the round pipe material processed in the step 3) is shaped, grinding the outer circular surface by using a general grinding machine until the roundness and the precision are both 0.02 size requirements; 5) turning the semi-finished product of which the outer circle is ground in the step 4) on a lathe by a claw disc jig through a clamp to form a first end face and a chamfer; 6) then, turning an inner chamfer angle R1.5 and an inner cavity in a pressing mode by using a pressure tool; 7) clamping the excircle by using a claw disc jig, and turning a second end face and a chamfer on a lathe; thereby finishing the processing of the inner ring and the outer ring of the ultrathin bearing. The invention is mainly used for processing the inner ring and the outer ring of the high-precision thin-wall bearing.
Description
Technical Field
The invention belongs to the technical field of bearing processing, relates to a processing technology of a bearing, and particularly relates to a processing technology of an inner ring and an outer ring of an ultrathin bearing.
Background
With the rise of smart manufacturing, lightweight, sensitive, and intelligent equipment systems represented by industrial robots are emerging in large numbers, which also makes bearings move toward lightweight, flexibility, and precision.
In the prior art, the conventional processing technology of the inner ring and the outer ring of the bearing mainly comprises turning, grinding and heat treatment, special equipment, tool fixtures and the like are needed, the investment cost is high, and the speed of developing new varieties of products is low. The conventional processing technology for the inner ring and the outer ring of the bearing ring is difficult to ensure the bearing ring with the wall thickness less than or equal to 1mm, the size is unstable, and the conventional technology mainly aims at the bearing with the thicker wall thickness in the market and aims at the processing technology without universality of an ultra-thin wall bearing.
Therefore, how to solve the above problems is a matter of research for those skilled in the art.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a processing technology of an inner ring and an outer ring of an ultrathin bearing.
In order to achieve the purpose, the invention provides the following technical scheme: a processing technology of an inner ring and an outer ring of an ultrathin bearing comprises the following steps:
1) cutting the long tube bar into straight sections with required sizes by a cutting machine according to design requirements;
2) roughly turning the cut straight stock section blank by using a claw disc jig, and reserving a margin of 0.5mm in the inner cavity;
3) then, supporting the inner cavity after the step 2) by using an inner cavity positioning jig, and carrying out vacuum heat treatment until the surface hardness is HRC 60-65;
4) after the round pipe material processed in the step 3) is shaped, grinding the outer circular surface by using a general grinding machine until the roundness and the precision are both 0.02 size requirements;
5) turning the semi-finished product of which the outer circle is ground in the step 4) on a lathe by a claw disc jig through a clamp to form a first end face and a chamfer;
6) then, turning an inner chamfer angle R1.5 and an inner cavity in a pressing mode by using a pressure tool;
7) clamping the excircle by using a claw disc jig, and turning a second end face and a chamfer on a lathe; thereby finishing the processing of the inner ring and the outer ring of the ultrathin bearing.
Further, in the step 6), the wall thickness of the bearing inner ring is less than 1.0 mm; the pressing mode clamping of the pressure tool is gapless clamping; the concentricity and the roundness are both 0.02 dimensional requirements.
Compared with the prior art, the invention has the beneficial effects that:
the processing technology of the invention can meet the requirements of the bearing ring by process refinement and decomposition and adjustment among multiple processes without investment of special equipment and high-volume equipment, and can ensure the requirements of wall thickness and the requirements of ultrathin wall thickness deformation less than or equal to 0.03 by simple tools. The bearing ring is required by process refinement and decomposition and adjustment among multiple processes, and the problem of deformation of an ultrathin wall caused by conventional grinding is solved.
The invention has the characteristics of greatly improving the product percent of pass and high production efficiency on the premise of not increasing equipment investment and ensuring the product quality, and is suitable for batch production.
The invention is mainly used for processing the inner ring and the outer ring of the high-precision thin-wall bearing.
Drawings
FIG. 1 is a schematic view of the process of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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.
As shown in figure 1 of the drawings, in which,
a processing technology of an inner ring and an outer ring of an ultrathin bearing comprises the following steps:
1) cutting the long tube bar into straight sections with required sizes by a cutting machine according to design requirements;
2) roughly turning the cut straight stock section blank by using a claw disc jig, and reserving a margin of 0.5mm in the inner cavity;
3) then, supporting the inner cavity after the step 2) by using an inner cavity positioning jig, and carrying out vacuum heat treatment until the surface hardness is HRC 60-65;
4) after the round pipe material processed in the step 3) is shaped, grinding the outer circular surface by using a general grinding machine until the roundness and the precision are both 0.02 size requirements;
5) turning the semi-finished product of which the outer circle is ground in the step 4) on a lathe by a claw disc jig through a clamp to form a first end face and a chamfer;
6) then, turning an inner chamfer angle R1.5 and an inner cavity in a pressing mode by using a pressure tool;
7) clamping the excircle by using a claw disc jig, and turning a second end face and a chamfer on a lathe; thereby finishing the processing of the inner ring and the outer ring of the ultrathin bearing.
Further, in the step 6), the wall thickness of the bearing inner ring is less than 1.0 mm; the pressing mode clamping of the pressure tool is gapless clamping; the concentricity and the roundness are both 0.02 dimensional requirements.
Compared with the prior art, the invention has the beneficial effects that:
the processing technology of the invention can meet the requirements of the bearing ring by process refinement and decomposition and adjustment among multiple processes without investment of special equipment and high-volume equipment, and can ensure the requirements of wall thickness and the requirements of ultrathin wall thickness deformation less than or equal to 0.03 by simple tools. The bearing ring is required by process refinement and decomposition and adjustment among multiple processes, and the problem of deformation of an ultrathin wall caused by conventional grinding is solved.
The invention has the characteristics of greatly improving the product percent of pass and high production efficiency on the premise of not increasing equipment investment and ensuring the product quality, and is suitable for batch production.
The invention is mainly used for processing the inner ring and the outer ring of the high-precision thin-wall bearing.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (2)
1. A processing technology of an inner ring and an outer ring of an ultrathin bearing is characterized in that: the method comprises the following steps:
1) cutting the long tube bar into straight sections with required sizes by a cutting machine according to design requirements;
2) roughly turning the cut straight stock section blank by using a claw disc jig, and reserving a margin of 0.5mm in the inner cavity;
3) then, supporting the inner cavity after the step 2) by using an inner cavity positioning jig, and carrying out vacuum heat treatment until the surface hardness is HRC 60-65;
4) after the circular tube material processed in the step 3) is shaped, grinding the outer circular surface by using a general grinder until the circular degree and the precision both meet the size requirement of 0.02;
5) turning the semi-finished product of which the outer circle is ground in the step 4) on a lathe by a claw disc jig through a clamp to form a first end face and a chamfer;
6) then, turning an inner chamfer angle R1.5 and an inner cavity in a pressing mode of a pressure tool;
7) clamping the excircle by using a claw disc jig, and turning a second end face and a chamfer on a lathe; thereby finishing the processing of the inner ring and the outer ring of the ultrathin bearing.
2. The process for machining the inner and outer races of the ultrathin bearing as claimed in claim 1, wherein: in the step 6), the wall thickness of the bearing inner ring is less than 1.0 mm; the pressing mode clamping of the pressure tool is gapless clamping; the concentricity and the roundness are both 0.02 dimensional requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679907.1A CN114473375A (en) | 2021-12-31 | 2021-12-31 | Processing technology of inner ring and outer ring of ultrathin bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111679907.1A CN114473375A (en) | 2021-12-31 | 2021-12-31 | Processing technology of inner ring and outer ring of ultrathin bearing |
Publications (1)
| Publication Number | Publication Date |
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| CN114473375A true CN114473375A (en) | 2022-05-13 |
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| CN202111679907.1A Pending CN114473375A (en) | 2021-12-31 | 2021-12-31 | Processing technology of inner ring and outer ring of ultrathin bearing |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004092726A (en) * | 2002-08-30 | 2004-03-25 | Nsk Ltd | Method for manufacturing bearing ring, and bearing |
| CN101109415A (en) * | 2006-07-18 | 2008-01-23 | 洛阳轴研科技股份有限公司 | Two-in-one method for processing narrow series thin-wall bearing ferrule |
| CN101775480A (en) * | 2010-03-01 | 2010-07-14 | 洛阳轴研科技股份有限公司 | Control method for preventing deformation in quenching process of 9Cr18 thin-wall bearing ring |
| CN101774111A (en) * | 2010-02-08 | 2010-07-14 | 马鞍山方圆回转支承股份有限公司 | Processing method of ultra-thin annular pieces |
| CN201720698U (en) * | 2010-05-25 | 2011-01-26 | 浙江吉利汽车研究院有限公司 | Thin walled cylindrical part processing clamp |
| CN102310310A (en) * | 2010-07-08 | 2012-01-11 | 襄阳汽车轴承股份有限公司 | Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings |
| CN105234637A (en) * | 2015-11-10 | 2016-01-13 | 上海斐赛轴承科技有限公司 | Thin-wall bearing manufacturing method and method for machining thin-wall inner ring/outer ring of thin-wall bearing as well as precision flexible bearing |
| CN108457989A (en) * | 2017-11-23 | 2018-08-28 | 莫祖勇 | A kind of processing method of thin-walled inner ring/outer ring of thin-wall bearing |
| CN111421300A (en) * | 2019-11-07 | 2020-07-17 | 襄阳汽车轴承股份有限公司 | Narrow series thin-wall conical bearing inner ring or outer ring blank forming and turning process |
| CN113369502A (en) * | 2021-06-28 | 2021-09-10 | 成都飞机工业（集团）有限责任公司 | Turning method of ultrathin-wall bushing |
-
2021
- 2021-12-31 CN CN202111679907.1A patent/CN114473375A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004092726A (en) * | 2002-08-30 | 2004-03-25 | Nsk Ltd | Method for manufacturing bearing ring, and bearing |
| CN101109415A (en) * | 2006-07-18 | 2008-01-23 | 洛阳轴研科技股份有限公司 | Two-in-one method for processing narrow series thin-wall bearing ferrule |
| CN101774111A (en) * | 2010-02-08 | 2010-07-14 | 马鞍山方圆回转支承股份有限公司 | Processing method of ultra-thin annular pieces |
| CN101775480A (en) * | 2010-03-01 | 2010-07-14 | 洛阳轴研科技股份有限公司 | Control method for preventing deformation in quenching process of 9Cr18 thin-wall bearing ring |
| CN201720698U (en) * | 2010-05-25 | 2011-01-26 | 浙江吉利汽车研究院有限公司 | Thin walled cylindrical part processing clamp |
| CN102310310A (en) * | 2010-07-08 | 2012-01-11 | 襄阳汽车轴承股份有限公司 | Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings |
| CN105234637A (en) * | 2015-11-10 | 2016-01-13 | 上海斐赛轴承科技有限公司 | Thin-wall bearing manufacturing method and method for machining thin-wall inner ring/outer ring of thin-wall bearing as well as precision flexible bearing |
| CN108457989A (en) * | 2017-11-23 | 2018-08-28 | 莫祖勇 | A kind of processing method of thin-walled inner ring/outer ring of thin-wall bearing |
| CN111421300A (en) * | 2019-11-07 | 2020-07-17 | 襄阳汽车轴承股份有限公司 | Narrow series thin-wall conical bearing inner ring or outer ring blank forming and turning process |
| CN113369502A (en) * | 2021-06-28 | 2021-09-10 | 成都飞机工业（集团）有限责任公司 | Turning method of ultrathin-wall bushing |
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