CN112192322A - Anti-deformation grinding process for bearing ring - Google Patents
Anti-deformation grinding process for bearing ring Download PDFInfo
- Publication number
- CN112192322A CN112192322A CN202010973670.7A CN202010973670A CN112192322A CN 112192322 A CN112192322 A CN 112192322A CN 202010973670 A CN202010973670 A CN 202010973670A CN 112192322 A CN112192322 A CN 112192322A
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- Prior art keywords
- bearing ring
- grinding
- deformation
- bearing
- heating treatment
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 35
- 238000011282 treatment Methods 0.000 claims abstract description 31
- 238000005498 polishing Methods 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 11
- 229910001060 Gray iron Inorganic materials 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 239000011856 silicon-based particle Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2261/00—Machining or cutting being involved
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses an anti-deformation grinding process for a bearing ring, which comprises the following steps: a. preheating; b. coarse grinding; c. primary heating treatment; d. fine grinding; e. secondary heating treatment; f. cleaning; g. and (6) polishing. Through the mode, the deformation-preventing grinding process for the bearing ring, provided by the invention, has the advantages that the grinding treatment is carried out after the heating treatment is carried out for multiple times, the factor of the processing stress can be completely released, the problem that the bearing ring is easy to deform is effectively reduced, the production efficiency is improved, the grinding effect is good after coarse grinding, fine grinding and polishing, the processing precision of the bearing ring is ensured, the quality of the bearing ring is ensured, and therefore, good economic benefits are brought.
Description
Technical Field
The invention relates to the technical field of bearing rings, in particular to an anti-deformation grinding process for a bearing ring.
Background
The bearing is an important part in the mechanical equipment nowadays. The main function of the bearing is to support the mechanical rotator, reduce the friction coefficient in the movement process and ensure the rotation precision. The radial rolling bearing is one of the bearings with the largest use amount, and generally comprises an inner ring, an outer ring, a rolling body and a retainer; the inner ring is matched with the shaft and rotates together with the shaft; the outer ring is matched with the bearing seat to play a supporting role, the bearing inner ring and the outer ring are collectively called as a bearing ring, wherein the inner circle of the bearing outer ring and the outer circle of the bearing inner ring are contact surfaces which are directly contacted with the rolling body, and the bearing ring is directly contacted with the rolling body, so that the surface roughness of the contact surface of the bearing ring and the rolling body is high in requirement for reducing the friction coefficient.
The bearing ring is easy to have elliptical deformation and end face buckling deformation of different degrees in the machining process, the bearing ring with the excessive elliptical deformation and end face buckling deformation needs to be corrected, and the bearing ring can be further polished after being corrected, so that the subsequent machining precision and the product percent of pass of the bearing are influenced, the labor intensity and the production cost are increased, and the production efficiency is reduced.
Disclosure of Invention
The invention mainly solves the technical problem of providing the anti-deformation grinding process for the bearing ring, which can completely release the factor of processing stress by grinding after multiple times of heating treatment, effectively reduce the problem of easy deformation of the bearing ring, improve the production efficiency, ensure the processing precision of the bearing ring and ensure the quality of the bearing ring after coarse grinding, fine grinding and polishing, thereby bringing good economic benefit.
In order to solve the technical problems, the invention adopts a technical scheme that: the anti-deformation grinding process for the bearing ring comprises the following specific steps:
a. preheating treatment, namely preheating the bearing ring at 220 ℃ at 180 ℃, preserving heat for 10-20min, and cooling to room temperature;
b. coarse grinding: carrying out coarse grinding on the plane, the outer diameter, the inner hole and the channel of the bearing ring by adopting a grinding piece and a coarse grinding agent;
c. primary heating treatment: carrying out primary heating treatment on the roughly ground bearing ferrule at the heating temperature of 200-250 ℃, preserving the heat for 15-25min, and cooling to room temperature;
d. fine grinding: the plane, the outer diameter, the inner hole and the channel of the bearing ring are finely ground by adopting a grinding piece and a fine grinding agent;
e. secondary heating treatment: carrying out second heating treatment on the bearing ferrule after fine grinding, wherein the heating temperature is 285-;
f. cleaning: washing the bearing ring with deionized water for 10-18min, and drying;
g. polishing: and polishing the plane, the outer diameter, the inner hole and the channel of the bearing ring by using a bearing ring polishing machine for 35-55 min.
In a preferred embodiment of the present invention, the material of the bearing ring is gray cast iron HT 250.
In a preferred embodiment of the present invention, the rough grinding agent is silicon carbide particle grinding agent.
In a preferred embodiment of the present invention, the coarse abrasive has a particle size of 68-88 um.
In a preferred embodiment of the present invention, the fine abrasive is a silicon particle abrasive.
In a preferred embodiment of the present invention, the particle size of the fine abrasive is 8-38 um.
The invention has the beneficial effects that: according to the deformation-preventing grinding process for the bearing ring, provided by the invention, the grinding treatment is carried out after the multiple heating treatments, so that the factor of the processing stress can be completely released, the problem that the bearing ring is easy to deform is effectively reduced, the production efficiency is improved, the grinding effect is good after coarse grinding, fine grinding and polishing, the processing precision of the bearing ring is ensured, the quality of the bearing ring is ensured, and good economic benefits are brought.
Drawings
FIG. 1 is a flow chart of a preferred embodiment of the deformation-preventing grinding process for a bearing ring of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
As shown in fig. 1, an embodiment of the present invention includes:
example 1:
the deformation-preventing grinding process for the bearing ring comprises the following specific steps of:
a. preheating, namely preheating the bearing ring at 180 ℃, keeping the temperature for 10min, and then cooling to room temperature;
b. coarse grinding: carrying out coarse grinding on the plane, the outer diameter, the inner hole and the channel of the bearing ring by adopting a grinding piece and a coarse grinding agent;
c. primary heating treatment: carrying out primary heating treatment on the roughly ground bearing ferrule at 200 ℃, keeping the temperature for 15min, and cooling to room temperature;
d. fine grinding: the plane, the outer diameter, the inner hole and the channel of the bearing ring are finely ground by adopting a grinding piece and a fine grinding agent;
e. secondary heating treatment: carrying out secondary heating treatment on the finely ground bearing ferrule, wherein the heating temperature is 285 ℃, keeping the temperature for 35min, and cooling to room temperature;
f. cleaning: washing the bearing ring with deionized water for 10min, and drying;
g. polishing: and polishing the plane, the outer diameter, the inner hole and the channel of the bearing ring by using a bearing ring polishing machine for 35 min.
In this embodiment, the bearing ring is made of gray cast iron HT250, and is easy to machine and has a firm structure.
In the above, the coarse grinding agent is a silicon carbide particle grinding agent, wherein the particle size of the coarse grinding agent is 68 um. The fine grinding agent adopts silicon particle grinding materials, wherein the granularity of the fine grinding agent is 8 um. Through the coarse grinding and the accurate grinding, the grinding effect is good, the working efficiency is high, and the product quality is ensured.
Example 2:
the deformation-preventing grinding process for the bearing ring comprises the following specific steps of:
a. preheating treatment, namely preheating the bearing ring at 200 ℃, keeping the temperature for 15min, and then cooling to room temperature;
b. coarse grinding: carrying out coarse grinding on the plane, the outer diameter, the inner hole and the channel of the bearing ring by adopting a grinding piece and a coarse grinding agent;
c. primary heating treatment: carrying out primary heating treatment on the roughly ground bearing ring, wherein the heating temperature is 235 ℃, preserving the heat for 20min, and cooling to room temperature;
d. fine grinding: the plane, the outer diameter, the inner hole and the channel of the bearing ring are finely ground by adopting a grinding piece and a fine grinding agent;
e. secondary heating treatment: carrying out secondary heating treatment on the finely ground bearing ferrule, wherein the heating temperature is 315 ℃, keeping the temperature for 30min, and cooling to room temperature;
f. cleaning: cleaning the bearing ring with deionized water for 15min, and drying;
g. polishing: and polishing the plane, the outer diameter, the inner hole and the channel of the bearing ring by using a bearing ring polishing machine for 45 min.
In this embodiment, the bearing ring is made of gray cast iron HT250, and is easy to machine and has a firm structure.
In the above, the coarse grinding agent is a silicon carbide particle grinding agent, wherein the particle size of the coarse grinding agent is 78 um. The fine grinding agent adopts silicon particle grinding materials, wherein the granularity of the fine grinding agent is 26 um. Through the coarse grinding and the accurate grinding, the grinding effect is good, the working efficiency is high, and the product quality is ensured.
Example 3:
the deformation-preventing grinding process for the bearing ring comprises the following specific steps of:
a. preheating, namely preheating the bearing ring at 220 ℃, keeping the temperature for 20min, and then cooling to room temperature;
b. coarse grinding: carrying out coarse grinding on the plane, the outer diameter, the inner hole and the channel of the bearing ring by adopting a grinding piece and a coarse grinding agent;
c. primary heating treatment: carrying out primary heating treatment on the roughly ground bearing ferrule at the heating temperature of 250 ℃, preserving heat for 25min, and cooling to room temperature;
d. fine grinding: the plane, the outer diameter, the inner hole and the channel of the bearing ring are finely ground by adopting a grinding piece and a fine grinding agent;
e. secondary heating treatment: carrying out second heating treatment on the finely ground bearing ferrule, wherein the heating temperature is 345 ℃, keeping the temperature for 45min, and cooling to room temperature;
f. cleaning: washing the bearing ring with deionized water for 18min, and drying;
g. polishing: and polishing the plane, the outer diameter, the inner hole and the channel of the bearing ring by using a bearing ring polishing machine for 55 min.
In this embodiment, the bearing ring is made of gray cast iron HT250, and is easy to machine and has a firm structure.
In the above, the coarse grinding agent is a silicon carbide particle grinding agent, wherein the particle size of the coarse grinding agent is 88 um. The fine grinding agent adopts silicon particle grinding materials, wherein the granularity of the fine grinding agent is 38 um. Through the coarse grinding and the accurate grinding, the grinding effect is good, the working efficiency is high, and the product quality is ensured.
In conclusion, the deformation-preventing grinding process for the bearing ring provided by the invention can completely release the factor of processing stress by grinding after multiple times of heating treatment, effectively reduce the problem that the bearing ring is easy to deform, improve the production efficiency, ensure the processing precision of the bearing ring and ensure the quality of the bearing ring after coarse grinding, fine grinding and polishing, thereby bringing good economic benefit.
In the description of the present invention, it should be noted that all the components are general standard components or components known to those skilled in the art, the structure and principle of the components can be known by technical manuals or by conventional test methods, and the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate the orientations or positional relationships based on the drawings or the orientations or positional relationships usually placed when the product of the present invention is used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the component referred to must have a specific orientation, be configured and operated in a specific orientation, and thus cannot be understood as limiting the present invention.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The deformation-preventing grinding process for the bearing ring is characterized by comprising the following specific steps of:
a. preheating treatment, namely preheating the bearing ring at 220 ℃ at 180 ℃, preserving heat for 10-20min, and cooling to room temperature;
b. coarse grinding: carrying out coarse grinding on the plane, the outer diameter, the inner hole and the channel of the bearing ring by adopting a grinding piece and a coarse grinding agent;
c. primary heating treatment: carrying out primary heating treatment on the roughly ground bearing ferrule at the heating temperature of 200-250 ℃, preserving the heat for 15-25min, and cooling to room temperature;
d. fine grinding: the plane, the outer diameter, the inner hole and the channel of the bearing ring are finely ground by adopting a grinding piece and a fine grinding agent;
e. secondary heating treatment: carrying out second heating treatment on the bearing ferrule after fine grinding, wherein the heating temperature is 285-;
f. cleaning: washing the bearing ring with deionized water for 10-18min, and drying;
g. polishing: and polishing the plane, the outer diameter, the inner hole and the channel of the bearing ring by using a bearing ring polishing machine for 35-55 min.
2. The anti-deformation grinding process for the bearing ring according to claim 1, wherein the material of the bearing ring is gray cast iron HT 250.
3. The deformation-resistant grinding process for the bearing ring according to claim 1, wherein the coarse grinding agent is silicon carbide particle grinding agent.
4. The anti-deformation grinding process for the bearing ring according to claim 3, wherein the particle size of the coarse grinding agent is 68-88 um.
5. The deformation-resistant grinding process for the bearing ring according to claim 1, wherein the fine grinding agent is silicon particle abrasive.
6. The deformation-resistant grinding process for the bearing ring according to claim 5, wherein the grain size of the fine grinding agent is 8-38 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010973670.7A CN112192322A (en) | 2020-09-16 | 2020-09-16 | Anti-deformation grinding process for bearing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010973670.7A CN112192322A (en) | 2020-09-16 | 2020-09-16 | Anti-deformation grinding process for bearing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112192322A true CN112192322A (en) | 2021-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010973670.7A Pending CN112192322A (en) | 2020-09-16 | 2020-09-16 | Anti-deformation grinding process for bearing ring |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280808A (en) * | 2008-04-05 | 2008-10-08 | 余姚市曙光不锈钢轴承有限公司 | Mirror face stainless steel bearing and process thereof |
| CN102618711A (en) * | 2011-11-09 | 2012-08-01 | 苏州大学 | Heat treatment technology for stainless steel bearing rings |
| CN104313294A (en) * | 2014-10-20 | 2015-01-28 | 洛阳Lyc轴承有限公司 | Thermal treatment method for dimensional stability of Cr4Mo4V steel bearing ring |
| CN104388660A (en) * | 2014-11-06 | 2015-03-04 | 无锡市百顺机械厂 | Rolling bearing heat treatment technique |
| CN106312457A (en) * | 2016-08-31 | 2017-01-11 | 洛阳轴研科技股份有限公司 | Machining method of large thin-wall bearing ring |
| KR101713225B1 (en) * | 2016-04-28 | 2017-03-07 | 김제호 | Manufacturing method of gas welding torch's welding tip |
| CN108044310A (en) * | 2017-11-28 | 2018-05-18 | 余姚市奥祥轴承有限公司 | A kind of manufacture craft of high-speed and high-temperature precision deep groove ball bearing |
-
2020
- 2020-09-16 CN CN202010973670.7A patent/CN112192322A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280808A (en) * | 2008-04-05 | 2008-10-08 | 余姚市曙光不锈钢轴承有限公司 | Mirror face stainless steel bearing and process thereof |
| CN102618711A (en) * | 2011-11-09 | 2012-08-01 | 苏州大学 | Heat treatment technology for stainless steel bearing rings |
| CN104313294A (en) * | 2014-10-20 | 2015-01-28 | 洛阳Lyc轴承有限公司 | Thermal treatment method for dimensional stability of Cr4Mo4V steel bearing ring |
| CN104388660A (en) * | 2014-11-06 | 2015-03-04 | 无锡市百顺机械厂 | Rolling bearing heat treatment technique |
| KR101713225B1 (en) * | 2016-04-28 | 2017-03-07 | 김제호 | Manufacturing method of gas welding torch's welding tip |
| CN106312457A (en) * | 2016-08-31 | 2017-01-11 | 洛阳轴研科技股份有限公司 | Machining method of large thin-wall bearing ring |
| CN108044310A (en) * | 2017-11-28 | 2018-05-18 | 余姚市奥祥轴承有限公司 | A kind of manufacture craft of high-speed and high-temperature precision deep groove ball bearing |
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Application publication date: 20210108 |