CN113369809B - Forming process for precision machining of special-shaped inner ring - Google Patents
Forming process for precision machining of special-shaped inner ring Download PDFInfo
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- CN113369809B CN113369809B CN202110601973.0A CN202110601973A CN113369809B CN 113369809 B CN113369809 B CN 113369809B CN 202110601973 A CN202110601973 A CN 202110601973A CN 113369809 B CN113369809 B CN 113369809B
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- special
- inner ring
- shaped inner
- annular groove
- wall
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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
Abstract
The invention relates to a molding process for precisely machining a special-shaped inner ring, which comprises the following steps: 1) Coarsening; 2) Solution treatment; 3) And (5) cutting. According to the invention, on one hand, the special-shaped inner ring is subjected to rough cutting treatment and an annular groove is formed, so that the clamping of the special-shaped inner ring can be realized, deformation is avoided, the positioning and the processing are convenient, and the parallelism, the flatness and the roundness precision of a product are ensured; on the other hand, the special-shaped inner ring is subjected to solution treatment, so that stress on the special-shaped inner ring can be released, stress concentration of the special-shaped inner ring is avoided, deformation is further avoided, and the yield of products is improved.
Description
Technical Field
The invention belongs to the technical field of precision machining, and particularly relates to a forming process for precision machining of a special-shaped inner ring.
Background
In the field of precision machining, the final quality thereof depends mainly on the machining process, such as the machining of an inner ring of an air film, which has the following defects in the machining process:
1) The product is thin-walled and easy to deform;
2) The clamping position is not arranged, and the positioning is not easy;
3) The product can be further deformed after being placed under the influence of stress concentration.
Therefore, aiming at the processing of the product, how to realize deformation prevention, good clamping and deformation caused by stress concentration can not be realized, and the processing method has become a technical problem in the field.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a brand-new forming process for precisely machining the special-shaped inner ring.
In order to solve the technical problems, the invention adopts the following technical scheme:
a molding process for precision machining of a special-shaped inner ring comprises the following steps:
1) Coarse processing
Firstly, cutting and processing the inner wall of the special-shaped inner ring or directly taking one end part of the outer diameter of the special-shaped inner ring as a positioning reference on the circumferential surface of the special-shaped inner ring to form an annular groove-shaped opening;
2) Solution treatment of
Placing the rough irregularly-shaped inner ring into a solution furnace for solution treatment;
3) Cutting and machining
a) The annular groove is used as a positioning reference, the CNC lathe backwards pushes the special-shaped inner ring against the positioning platform from the rear end face from the groove wall at one side of the annular groove, and at the moment, the front part of the special-shaped inner ring and the front part of the annular groove are processed;
b) After the front end part of the special-shaped inner ring is machined, the special-shaped inner ring is turned 180 degrees, the CNC lathe backwards pushes the end face of the special-shaped inner ring which is machined on the positioning platform from the groove wall at the other side of the annular groove, and at the moment, the special-shaped inner ring and the front part of the annular groove are machined after positioning.
Preferably, in step 1), the depth of the annular groove is smaller than the allowance of the surface cutting of the profiled inner ring. The arrangement is convenient for processing the surface of the special-shaped inner ring.
Specifically, in step 1), the depth of the annular groove is 2±0.2mm.
Preferably, in step 1), the annular groove has a width w1, and the annular groove has two flanges formed with thicknesses h1 and h2, respectively, wherein w1 < h1+h2. The arrangement is convenient for processing the two convex edges.
Specifically, in step 1), the thickness H of the irregular inner ring is not subjected to the rough cutting treatment, wherein h=w1+h1+h2, and w1/H < 1/2. The arrangement avoids the over-wide annular groove, increases the allowance and ensures the processing precision.
Further, the method comprises the steps of,
and is less than or equal to 1. The thickness that sets up like this, guarantees two chimb is close, avoids one of them chimb to be too thin and the deformation that leads to, the clamping and the processing of two chimbs of being convenient for.
Preferably, in the step 2), the roughened special-shaped inner ring is subjected to solution treatment at 1100-1200 ℃. The special-shaped inner ring is arranged in such a way to release the stress on the special-shaped inner ring, so that deformation after processing is avoided.
Specifically, in the step 2), the special-shaped inner ring after the rough cutting is subjected to solution treatment at 1160+/-5 ℃.
Preferably, in the step 3), the cutting processing further includes finishing, wherein the finishing of the inner wall and the corresponding outer wall of the special-shaped inner ring is realized by using two ends of the annular groove as positioning references and using the end face of the special-shaped inner ring to attach to an abutting mode.
In addition, in the step 3), the cutting processing further comprises finishing, wherein the two ends of the annular groove are used as positioning references, the end face of the special-shaped inner ring is attached to the abutting mode, the finishing of the inner wall of the special-shaped inner ring is achieved, and then the inner wall of the special-shaped inner ring is used as the positioning references, and the finishing of the outer wall of the special-shaped inner ring is achieved.
Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the invention, on one hand, the special-shaped inner ring is subjected to rough cutting treatment and an annular groove is formed, so that the clamping of the special-shaped inner ring can be realized, deformation is avoided, the positioning and the processing are convenient, and the parallelism, the flatness and the roundness precision of a product are ensured; on the other hand, the special-shaped inner ring is subjected to solution treatment, so that stress on the special-shaped inner ring can be released, stress concentration of the special-shaped inner ring is avoided, deformation is further avoided, and the yield of products is improved.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with the present application are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate or are directional or positional relationships, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature. It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
According to the forming process for the precise machining of the special-shaped inner ring, the process mainly comprises three parts, namely 1) rough cutting treatment; 2) Solution treatment; 3) And (5) cutting.
Specifically, 1), coarse processing: firstly, cutting and processing one end part of the outer diameter of the special-shaped inner ring as a positioning reference on the circumferential surface of the special-shaped inner ring to form an annular groove-shaped opening, wherein the depth of the annular groove is smaller than the allowance of the surface cutting of the special-shaped inner ring, and the depth of the annular groove is 2+/-0.2 mm. The arrangement is convenient for processing the surface of the special-shaped inner ring.
In this example, the thickness H of the irregular inner ring which is not subjected to the rough cutting treatment, the width w1 of the annular groove, and the thicknesses of two convex edges formed by the annular groove are H1 and H2 respectively, wherein h=w1+h1+h2, and w1/H is less than 1/2. The arrangement avoids the over-wide annular groove, increases the allowance and ensures the processing precision.
Meanwhile, w1 is less than h1+h2, and
and is less than or equal to 1. The thickness that sets up like this, guarantees two chimb is close, avoids one of them chimb to be too thin and the deformation that leads to, the clamping and the processing of two chimbs of being convenient for.
2) Solution treatment: and (3) placing the rough irregular inner ring into a solution furnace, and performing solution treatment at 1160+/-5 ℃. The special-shaped inner ring is arranged in such a way to release the stress on the special-shaped inner ring, so that deformation after processing is avoided.
3) Cutting: firstly, taking an annular groove as a positioning reference, abutting the special-shaped inner ring against a positioning platform from the rear end face backwards from the groove wall at one side of the annular groove by a CNC lathe, and processing the front part of the special-shaped inner ring and the front part of the annular groove at the moment; and then, after the front end part of the special-shaped inner ring is machined, turning the special-shaped inner ring by 180 degrees, and abutting the end surface of the special-shaped inner ring which is machined by the CNC lathe from the groove wall at the other side of the annular groove to a positioning platform, and at the moment, machining the special-shaped inner ring and the front part of the annular groove after positioning.
In addition, the cutting processing further comprises finish machining, wherein the two ends of the annular groove are used as positioning references, and the inner wall of the special-shaped inner ring and the corresponding outer wall are finished in a mode that the end faces of the special-shaped inner ring are attached to each other in a collision mode; or, during finish machining, two ends of the annular groove are used as positioning references, the end faces of the special-shaped inner ring are attached to the abutting mode, finish machining of the inner wall of the special-shaped inner ring is achieved, and then finish machining of the outer wall of the special-shaped inner ring is achieved by using the inner wall of the special-shaped inner ring as the positioning reference.
Therefore, the present embodiment has the following advantages;
1. the special-shaped inner ring is subjected to rough cutting treatment and forms the annular groove, so that the clamping of the special-shaped inner ring can be realized, deformation is avoided, the positioning and the processing are convenient, and the parallelism, the flatness and the roundness precision of a product are ensured;
2. carrying out solution treatment on the special-shaped inner ring to release stress on the special-shaped inner ring, avoiding stress concentration of the special-shaped inner ring, further avoiding deformation and improving the yield of products;
3. the clamping is simple, the positioning is accurate, the processing speed is high, and the production efficiency is improved.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. A molding process for precisely machining a special-shaped inner ring is characterized by comprising the following steps of: the molding process comprises the following steps:
1) Coarse processing
Firstly, cutting on the circumferential surface of the special-shaped inner ring by taking the inner wall of the special-shaped inner ring as a positioning reference or directly taking one end part of the outer diameter of the special-shaped inner ring as a positioning reference to form an annular groove-shaped opening, wherein the width w1 of the annular groove, the thickness of two convex edges formed by the annular groove are h1 and h2 respectively, and w1 is smaller than h1+h2; the thickness H of the special-shaped inner ring which is not subjected to rough cutting treatment, wherein H=w1+h1+h2, and w1/H is less than 1/2, and I H1-h2I is less than or equal to 1;
2) Solution treatment of
Placing the rough irregularly-shaped inner ring into a solution furnace for solution treatment;
3) Cutting and machining
a) The annular groove is used as a positioning reference, the CNC lathe backwards pushes the special-shaped inner ring against the positioning platform from the rear end face from the groove wall at one side of the annular groove, and at the moment, the front part of the special-shaped inner ring and the front part of the annular groove are processed;
b) After the front end part of the special-shaped inner ring is machined, the special-shaped inner ring is turned 180 degrees, the CNC lathe backwards pushes the end face of the special-shaped inner ring which is machined on the positioning platform from the groove wall at the other side of the annular groove, and at the moment, the special-shaped inner ring and the front part of the annular groove are machined after positioning.
2. The molding process for precision machining of the special-shaped inner ring according to claim 1, wherein: in step 1), the depth of the annular groove is smaller than the allowance of surface cutting of the special-shaped inner ring.
3. The molding process for precision machining of the special-shaped inner ring according to claim 2, wherein: in step 1), the depth of the annular groove was 2.+ -. 0.2mm.
4. The molding process for precision machining of the special-shaped inner ring according to claim 1, wherein: in the step 2), the special-shaped inner ring after the rough cutting is subjected to solution treatment at 1100-1200 ℃.
5. The molding process for precision machining of the special-shaped inner ring according to claim 1, wherein: in the step 2), the special-shaped inner ring after the rough cutting is subjected to solution treatment at 1160+/-5 ℃.
6. The molding process for precision machining of the special-shaped inner ring according to claim 1, wherein: in the step 3), the cutting processing further includes finishing, wherein the finishing of the inner wall and the corresponding outer wall of the special-shaped inner ring is realized by using the two ends of the annular groove as positioning references and using the end face of the special-shaped inner ring to attach to an abutting mode.
7. The molding process for precision machining of the special-shaped inner ring according to claim 1, wherein: in the step 3), the cutting processing further includes finishing, wherein the two ends of the annular groove are used as positioning references, the end face of the special-shaped inner ring is attached to the abutting mode, so that the finishing of the inner wall of the special-shaped inner ring is realized, and then the finishing of the outer wall of the special-shaped inner ring is finished by taking the inner wall of the special-shaped inner ring as the positioning references.
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| CN202310628419.0A CN116441871A (en) | 2021-05-31 | 2021-05-31 | Treatment process in forming and processing of special-shaped inner ring |
| CN202110601973.0A CN113369809B (en) | 2021-05-31 | 2021-05-31 | Forming process for precision machining of special-shaped inner ring |
| CN202310628424.1A CN116511846A (en) | 2021-05-31 | 2021-05-31 | Forming process of special-shaped inner ring based on rough cutting treatment |
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| CN202110601973.0A CN113369809B (en) | 2021-05-31 | 2021-05-31 | Forming process for precision machining of special-shaped inner ring |
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| CN202310628419.0A Division CN116441871A (en) | 2021-05-31 | 2021-05-31 | Treatment process in forming and processing of special-shaped inner ring |
| CN202310628424.1A Division CN116511846A (en) | 2021-05-31 | 2021-05-31 | Forming process of special-shaped inner ring based on rough cutting treatment |
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| CN202310628419.0A Pending CN116441871A (en) | 2021-05-31 | 2021-05-31 | Treatment process in forming and processing of special-shaped inner ring |
| CN202310628424.1A Pending CN116511846A (en) | 2021-05-31 | 2021-05-31 | Forming process of special-shaped inner ring based on rough cutting treatment |
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| CN202310628424.1A Pending CN116511846A (en) | 2021-05-31 | 2021-05-31 | Forming process of special-shaped inner ring based on rough cutting treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111015130A (en) * | 2019-12-31 | 2020-04-17 | 江阴燎原装备制造有限公司 | Method for machining inner ring |
| CN112570986A (en) * | 2020-10-27 | 2021-03-30 | 沈阳富创精密设备股份有限公司 | Machining process of thin-wall annular part of IC (integrated circuit) equipment |
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| US7913374B2 (en) * | 2005-08-09 | 2011-03-29 | Ntn Corporation | Processing method for brake rotor-equipped wheel bearing devices |
| JP2007271045A (en) * | 2006-03-31 | 2007-10-18 | Jtekt Corp | Wheel rolling bearing device manufacturing method |
| CN101972942B (en) * | 2010-10-14 | 2013-06-05 | 上海特波电机有限公司 | One-step tool clamp for machining motor shell and using method thereof |
| CN201960377U (en) * | 2010-12-17 | 2011-09-07 | 山东济宁特力机床有限公司 | Hydraulic clamp for finish machining of motor housing |
| CN202527962U (en) * | 2012-05-03 | 2012-11-14 | 天津市隆诚泰铝业有限公司 | Tool for processing both ends of motor casing |
| CN104439284A (en) * | 2014-11-14 | 2015-03-25 | 江苏大中电机股份有限公司 | Motor case one-step turning method and clamp |
| CN105750850A (en) * | 2014-12-13 | 2016-07-13 | 重庆环德科技有限公司 | Turntable bearing machining technique |
| CN205085700U (en) * | 2015-11-04 | 2016-03-16 | 沈阳黎明航空发动机(集团)有限责任公司 | Digital control processing anchor clamps of dysmorphism silk braid |
| CN105328418B (en) * | 2015-12-04 | 2017-11-03 | 无锡易通精密机械股份有限公司 | A kind of Vehicle Processing technique of railway bearing |
| JP6689151B2 (en) * | 2016-07-19 | 2020-04-28 | 日本精工株式会社 | Cylindrical ring member manufacturing method, radial rolling bearing manufacturing method, and one-way clutch manufacturing method |
| CN109531285A (en) * | 2018-12-11 | 2019-03-29 | 贵州天马虹山轴承有限公司 | A kind of processing technology of Special-shaped bearing |
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- 2021-05-31 CN CN202110601973.0A patent/CN113369809B/en active Active
- 2021-05-31 CN CN202310628419.0A patent/CN116441871A/en active Pending
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111015130A (en) * | 2019-12-31 | 2020-04-17 | 江阴燎原装备制造有限公司 | Method for machining inner ring |
| CN112570986A (en) * | 2020-10-27 | 2021-03-30 | 沈阳富创精密设备股份有限公司 | Machining process of thin-wall annular part of IC (integrated circuit) equipment |
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| CN116511846A (en) | 2023-08-01 |
| CN116441871A (en) | 2023-07-18 |
| CN113369809A (en) | 2021-09-10 |
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