CN112008346B - High-precision deep groove ball bearing outer ring machining method - Google Patents
High-precision deep groove ball bearing outer ring machining method Download PDFInfo
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Abstract
The invention belongs to the technical field of machining of mechanical bearings, and particularly relates to a high-precision machining method for an outer ring of a deep groove ball bearing. The invention comprises the following steps in sequence: blanking, end face polishing, outer surface polishing, inner surface polishing, ball channel turning, turning of a sealing groove and a chamfer on one side, turning of a sealing groove and a chamfer on the other side, turning of an outer arc and heat treatment. The processing method provided by the invention has higher processing precision, and the processing tolerance can be controlled in a lower range.
Description
Technical Field
The invention belongs to the technical field of machining of mechanical bearings, and particularly relates to a high-precision machining method for an outer ring of a deep groove ball bearing.
Background
The bearing is a component for fixing and reducing the load friction coefficient in the mechanical transmission process. It can also be said that the member for reducing the friction coefficient during power transmission and keeping the center position of the shaft fixed when the other members are moved relative to each other on the shaft. The bearing is a lightweight part in modern mechanical equipment. Its main function is to support the mechanical rotating body to reduce the friction coefficient of mechanical load of equipment in the transmission process. Under the strong promotion of innovation, the bearing industry enters a brand-new high-quality rapid development period, and the bearing outer ring machining method in the prior art has poor machining precision and larger machining tolerance in the turning process.
For example, the chinese patent application discloses a method for machining a bearing outer ring [ application No.: 201410361811.4], the invention comprises the following steps of 1, taking annular blank plate, arranging an annular rolling groove with U-shaped axial section on the outer circumference of the cold rolling machine core roller, wherein the angles of two inclined planes of the annular rolling groove are the same; 2. placing the blank plate into a cold rolling machine for cold rolling processing to obtain a semi-finished product containing two conical bearing outer rings; the bearing outer ring comprises the following components in percentage by weight: 0.14 carbon; 0.39 of chromium; 0.16 parts of silicon; 0.30 parts of titanium; 0.12 of niobium; 0.25 parts of copper; 0.22 parts of nickel; 0.45 of sulfur; 0.26 of phosphorus; unavoidable impurities are less than 0.1; the balance being iron.
The method has the advantages of simple processing technology, easy operation, few working procedures, high utilization rate of raw materials and low cost, but the method still does not solve the problems.
Disclosure of Invention
The invention aims to solve the problems and provides a high-precision machining method for an outer ring of a deep groove ball bearing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-precision deep groove ball bearing outer ring processing method comprises the following steps:
the method comprises the following steps: blanking, namely transferring the outer ring of the bearing to a grinding platform;
step two: grinding end faces, roughly grinding the end faces on the two sides of the bearing outer ring, and then finely grinding the end faces on the two sides of the bearing outer ring;
step three: grinding the outer surface, roughly grinding the outer surface of the bearing outer ring, and then finely grinding the outer surface of the bearing outer ring;
step four: turning the inner surface, namely taking a horizontal plane positioned on one side of the outer ring of the bearing as a reference surface, attaching the end surface to the reference surface, clamping the outer surface of the bearing, and turning and polishing the inner surface of the bearing;
step five: turning a ball groove, measuring the outer diameter, the inner diameter and the height of the bearing outer ring, estimating the times of cutter separation in turning, taking a horizontal plane positioned on one side of the bearing outer ring as a reference surface, attaching the end face to the reference surface, clamping one side of the outer surface of the bearing close to the reference surface, and turning a circle of ball groove at the center position of the inner surface of the bearing;
step six: turning a first chamfer on one side of the outer surface of the bearing away from the reference surface, and turning a circle of first sealing groove on one side of the inner surface of the bearing away from the reference surface;
step seven: turning a sealing groove on the other side, wherein a horizontal plane on one side of the bearing outer ring is used as a reference surface, the reference surface and the reference surface in the step five are respectively positioned on two sides of the bearing outer ring, the end surface is attached to the reference surface, one side, close to the reference surface, of the outer surface of the bearing is clamped, a second chamfer is turned on one side, far away from the reference surface, of the outer surface of the bearing, and a circle of second sealing groove is turned on one side, far away from the reference surface, of the inner surface of the bearing;
step eight: turning an outer circular arc, namely taking a horizontal plane on one side of the bearing outer ring as a reference surface, attaching the end face to the reference surface, clamping a first boss between the ball groove and the first sealing groove and a second boss between the ball groove and the second sealing groove, and turning the outer surface of the bearing into a circular arc shape to obtain a crude product of the bearing outer ring;
step nine: and (5) performing heat treatment, namely performing heat treatment on the crude product of the bearing outer ring obtained in the step eight at the temperature of 800-900 ℃ to obtain a finished product of the bearing outer ring.
In the method for processing the outer ring of the high-precision deep groove ball bearing, in the second step, the width tolerance of the bearing outer ring after rough grinding is not more than +/-0.04, and the width tolerance of the bearing outer ring after fine grinding is not more than +/-0.03.
In the above processing method for the outer ring of the high-precision deep groove ball bearing, in the second step, the parallelism between the end surfaces of the two sides of the outer ring of the bearing after the rough grinding is 0.03, and the parallelism between the end surfaces of the two sides of the outer ring of the bearing after the fine grinding is 0.02.
In the method for processing the outer ring of the high-precision deep groove ball bearing, in the third step, the diameter tolerance of the bearing outer ring after coarse grinding is not more than +/-0.04, and the diameter tolerance of the bearing outer ring after fine grinding is not more than +/-0.03.
In the method for processing the outer ring of the high-precision deep groove ball bearing, in the third step, the parallelism between the tangent planes at the two ends of the diameter of the outer surface of the bearing after coarse grinding is 0.03, and the parallelism between the tangent planes at the two ends of the diameter of the outer surface of the bearing after fine grinding is 0.02.
In the method for processing the outer ring of the high-precision deep groove ball bearing, the parallelism between the tangent planes at the two ends of the diameter of the inner surface of the bearing after turning in the fourth step is within 0.03, and the diameter tolerance of the inner surface of the bearing is not more than +/-0.04.
In the processing method of the outer ring of the high-precision deep groove ball bearing, in the fifth step, the bottom surface of the ball groove is arc-shaped, the tolerance of the radius of the arc-shaped bottom surface is not more than +/-0.04, and the radian tolerance is not more than +/-0.04.
In the method for processing the outer ring of the high-precision deep groove ball bearing, in the fifth step, the parallelism between the center line and the end face of the ball groove is within 0.03.
In the processing method of the outer ring of the high-precision deep groove ball bearing, the diameter tolerance of the circular arc-shaped bearing outer surface in the step eight is not more than +/-0.04.
Compared with the prior art, the invention has the advantages that:
1. the processing method provided by the invention has higher processing precision, and the processing tolerance can be controlled in a lower range.
2. According to the invention, after the crude product of the bearing outer ring is obtained, a heat treatment step of high-temperature heating is carried out, so that the finished product has higher hardness.
Drawings
FIG. 1 is a cross-sectional view after step four;
FIG. 2 is a cross-sectional view after step five;
FIG. 3 is a cross-sectional view after step six;
FIG. 4 is a cross-sectional view after step seven;
FIG. 5 is a cross-sectional view of the finished bearing cup;
in the figure: bearing inner race 1, terminal surface 2, bearing surface 3, bearing inner surface 4, ball slot 5, first chamfer 6, first seal groove 7, second chamfer 8, second seal groove 9, first boss 10, second boss 11.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description, wherein the tolerance units, the length units and the angle units of the invention are all millimeters.
Example 1
The embodiment provides a method for processing an outer ring of a high-precision deep groove ball bearing, which is shown in fig. 1-5 and comprises the following steps:
the method comprises the following steps: blanking, namely transferring the bearing outer ring 1 to a grinding platform;
step two: grinding end faces, presetting the width of a bearing outer ring 1 to be 19.35mm, roughly grinding the end faces 2 on two sides of the bearing outer ring 1, setting the difference value between the width of the bearing outer ring 1 after rough grinding and the preset width to be 0.04mm, setting the parallelism between the end faces 2 on two sides of the bearing outer ring 1 to be 0.03, then finely grinding the end faces 2 on two sides of the bearing outer ring 1, setting the difference value between the width of the bearing outer ring 1 after fine grinding and the preset width to be 0.02mm, and setting the parallelism between the end faces 2 on two sides of the bearing outer ring 1 to be 0.02;
step three: grinding the outer surface, wherein the outer diameter of the bearing outer ring 1 is preset to be 75.44mm, roughly grinding the bearing outer surface 3 of the bearing outer ring 1, the difference value between the outer diameter of the bearing outer ring 1 after rough grinding and the preset outer diameter is 0.04mm, the parallelism between tangent planes at two ends of the diameter of the bearing outer surface 3 is 0.03, then finely grinding the bearing outer surface 3 of the bearing outer ring 1, the difference value between the outer diameter of the bearing outer ring 1 after fine grinding and the preset outer diameter is 0.02mm, and the parallelism between the tangent planes at two ends of the diameter of the bearing outer surface 3 is 0.02;
step four: turning the inner surface, wherein the inner diameter of the bearing outer ring 1 is preset to be 62.50mm, a horizontal plane positioned on one side of the bearing outer ring 1 is taken as a reference plane, the end surface 2 is attached to the reference plane, the outer surface 3 of the bearing is clamped, the inner surface 4 of the bearing is turned and polished, the parallelism between the tangent planes at the two ends of the diameter of the inner surface 4 of the bearing after turning is 0.03, and the difference between the outer diameter and the preset outer diameter is 0.04 mm;
step five: turning a ball channel, measuring the outer diameter, the inner diameter and the height of the bearing outer ring 1, estimating the number of times of cutter splitting in turning, presetting the diameter of a ball groove 5 to be 7.43mm and presetting the radian to be 25 degrees, taking a horizontal plane positioned on one side of the bearing outer ring 1 as a reference plane, attaching an end face 2 to the reference plane, clamping one side of the outer surface 3 of the bearing close to the reference plane, turning a circle of ball groove 5 at the center position of the inner surface 4 of the bearing, and measuring that the difference between the diameter of the ball groove 5 and the preset value is 0.04mm, the difference between the angle and the preset value is 0.04 degrees, and the parallelism between a center line and the end face 2 is 0.03;
step six: turning a sealing groove at one side, wherein a horizontal plane positioned at one side of the bearing outer ring 1 is taken as a reference surface, the end surface 2 is attached to the reference surface, one side of the outer surface 3 of the bearing close to the reference surface is clamped, a first chamfer 6 is turned at one side of the outer surface 3 of the bearing far away from the reference surface, and a circle of first sealing groove 7 is turned at one side of the inner surface 4 of the bearing far away from the reference surface;
step seven: turning a sealing groove on the other side, wherein a horizontal plane on one side of the bearing outer ring 1 is used as a reference surface, the reference surface and the reference surface in the step five are respectively positioned on two sides of the bearing outer ring 1, the end surface 2 is attached to the reference surface, one side, close to the reference surface, of the outer surface 3 of the bearing is clamped, a second chamfer 8 is turned on one side, far away from the reference surface, of the outer surface 3 of the bearing, and a circle of second sealing groove 9 is turned on one side, far away from the reference surface, of the inner surface 4 of the bearing;
step eight: turning an outer circular arc, wherein the diameter of the outer surface 3 of the bearing is preset to be 75.24mm, a horizontal plane on one side of the outer ring 1 of the bearing is taken as a reference plane, the end face 2 is attached to the reference plane, a first boss 10 between the ball groove 5 and the first sealing groove 7 and a second boss 11 between the ball groove 5 and the second sealing groove 9 are clamped, the outer surface 3 of the bearing is turned into an arc shape, and the difference between the diameter of the outer surface 3 of the bearing and the preset value is measured to be 0.04mm after turning, so that a crude product of the outer ring of the bearing is obtained;
step nine: and (5) performing heat treatment, namely performing heat treatment on the bearing outer ring crude product obtained in the step eight at the temperature of 800 ℃ to obtain a bearing outer ring finished product.
Example 2
The embodiment provides a method for processing an outer ring of a high-precision deep groove ball bearing, which is shown in fig. 1-5 and comprises the following steps:
the method comprises the following steps: blanking, namely transferring the bearing outer ring 1 to a grinding platform;
step two: grinding end faces, presetting the width of a bearing outer ring 1 to be 19.35mm, roughly grinding the end faces 2 on two sides of the bearing outer ring 1, setting the difference value between the width of the bearing outer ring 1 after rough grinding and the preset width to be 0.035mm, setting the parallelism between the end faces 2 on two sides of the bearing outer ring 1 to be 0.03, then finely grinding the end faces 2 on two sides of the bearing outer ring 1, setting the difference value between the width of the bearing outer ring 1 after fine grinding and the preset width to be 0.03mm, and setting the parallelism between the end faces 2 on two sides of the bearing outer ring 1 to be 0.02;
step three: grinding the outer surface, wherein the outer diameter of the bearing outer ring 1 is preset to be 75.44mm, roughly grinding the bearing outer surface 3 of the bearing outer ring 1, the difference value between the outer diameter of the bearing outer ring 1 after rough grinding and the preset outer diameter is 0.035mm, the parallelism between tangent planes at two ends of the diameter of the bearing outer surface 3 is 0.03, then finely grinding the bearing outer surface 3 of the bearing outer ring 1, the difference value between the outer diameter of the bearing outer ring 1 after fine grinding and the preset outer diameter is 0.02mm, and the parallelism between the tangent planes at two ends of the diameter of the bearing outer surface 3 is 0.02;
step four: turning the inner surface, wherein the inner diameter of the bearing outer ring 1 is preset to be 62.50mm, a horizontal plane positioned on one side of the bearing outer ring 1 is taken as a reference plane, the end surface 2 is attached to the reference plane, the outer surface 3 of the bearing is clamped, the inner surface 4 of the bearing is turned and polished, the parallelism between the tangent planes at the two ends of the diameter of the inner surface 4 of the bearing after turning is 0.03, and the difference between the outer diameter and the preset outer diameter is 0.02 mm;
step five: turning a ball channel, measuring the outer diameter, the inner diameter and the height of the bearing outer ring 1, estimating the number of times of cutter splitting in turning, presetting the diameter of a ball groove 5 to be 7.43mm and presetting the radian to be 25 degrees, taking the horizontal plane on one side of the bearing outer ring 1 as a reference plane, attaching the end face 2 to the reference plane, clamping one side of the outer surface 3 of the bearing close to the reference plane, turning a circle of ball groove 5 at the center position of the inner surface 4 of the bearing, and measuring that the difference between the diameter of the ball groove 5 and the preset value is 0.035mm, the difference between the angle and the preset value is 0.035 degrees, and the parallelism between the center line and the end face 2 is 0.03;
step six: turning a sealing groove at one side, wherein a horizontal plane positioned at one side of the bearing outer ring 1 is taken as a reference surface, the end surface 2 is attached to the reference surface, one side of the outer surface 3 of the bearing close to the reference surface is clamped, a first chamfer 6 is turned at one side of the outer surface 3 of the bearing far away from the reference surface, and a circle of first sealing groove 7 is turned at one side of the inner surface 4 of the bearing far away from the reference surface;
step seven: turning a sealing groove on the other side, wherein a horizontal plane on one side of the bearing outer ring 1 is used as a reference surface, the reference surface and the reference surface in the step five are respectively positioned on two sides of the bearing outer ring 1, the end surface 2 is attached to the reference surface, one side, close to the reference surface, of the outer surface 3 of the bearing is clamped, a second chamfer 8 is turned on one side, far away from the reference surface, of the outer surface 3 of the bearing, and a circle of second sealing groove 9 is turned on one side, far away from the reference surface, of the inner surface 4 of the bearing;
step eight: turning an outer circular arc, wherein the diameter of the outer surface 3 of the bearing is preset to be 75.24mm, taking a horizontal plane on one side of the outer ring 1 of the bearing as a reference plane, attaching the end face 2 to the reference plane, clamping a first boss 10 between the ball groove 5 and the first sealing groove 7 and a second boss 11 between the ball groove 5 and the second sealing groove 9, turning the outer surface 3 of the bearing into an arc shape, and measuring that the difference between the diameter of the outer surface 3 of the bearing and the preset value is 0.035mm after turning to obtain a crude product of the outer ring of the bearing;
step nine: and (5) performing heat treatment, namely performing heat treatment on the bearing outer ring crude product obtained in the step eight at 900 ℃ to obtain a bearing outer ring finished product.
Example 3
The embodiment provides a method for processing an outer ring of a high-precision deep groove ball bearing, which is shown in fig. 1-5 and comprises the following steps:
the method comprises the following steps: blanking, namely transferring the bearing outer ring 1 to a grinding platform;
step two: grinding end faces, presetting the width of a bearing outer ring 1 to be 19.35mm, roughly grinding the end faces 2 on two sides of the bearing outer ring 1, setting the difference value between the width of the bearing outer ring 1 after rough grinding and the preset width to be 0.04mm, setting the parallelism between the end faces 2 on two sides of the bearing outer ring 1 to be 0.03, then finely grinding the end faces 2 on two sides of the bearing outer ring 1, setting the difference value between the width of the bearing outer ring 1 after fine grinding and the preset width to be 0.025mm, and setting the parallelism between the end faces 2 on two sides of the bearing outer ring 1 to be 0.02;
step three: grinding the outer surface, wherein the outer diameter of the bearing outer ring 1 is preset to be 75.44mm, roughly grinding the bearing outer surface 3 of the bearing outer ring 1, the difference value between the outer diameter of the bearing outer ring 1 after rough grinding and the preset outer diameter is 0.04mm, the parallelism between tangent planes at two ends of the diameter of the bearing outer surface 3 is 0.03, then finely grinding the bearing outer surface 3 of the bearing outer ring 1, the difference value between the outer diameter of the bearing outer ring 1 after fine grinding and the preset outer diameter is 0.025mm, and the parallelism between the tangent planes at two ends of the diameter of the bearing outer surface 3 is 0.02;
step four: turning the inner surface, wherein the inner diameter of the bearing outer ring 1 is preset to be 62.50mm, a horizontal plane positioned on one side of the bearing outer ring 1 is taken as a reference plane, the end surface 2 is attached to the reference plane, the outer surface 3 of the bearing is clamped, the inner surface 4 of the bearing is turned and polished, the parallelism between the tangent planes at the two ends of the diameter of the inner surface 4 of the bearing after turning is 0.03, and the difference between the outer diameter and the preset outer diameter is 0.04 mm;
step five: turning a ball channel, measuring the outer diameter, the inner diameter and the height of the bearing outer ring 1, estimating the number of times of cutter splitting in turning, presetting the diameter of a ball groove 5 to be 7.43mm and presetting the radian to be 25 degrees, taking a horizontal plane positioned on one side of the bearing outer ring 1 as a reference plane, attaching an end face 2 to the reference plane, clamping one side of the outer surface 3 of the bearing close to the reference plane, turning a circle of ball groove 5 at the center position of the inner surface 4 of the bearing, and measuring that the difference between the diameter of the ball groove 5 and the preset value is 0.04mm, the difference between the angle and the preset value is 0.04 degrees, and the parallelism between a center line and the end face 2 is 0.03;
step six: turning a sealing groove at one side, wherein a horizontal plane positioned at one side of the bearing outer ring 1 is taken as a reference surface, the end surface 2 is attached to the reference surface, one side of the outer surface 3 of the bearing close to the reference surface is clamped, a first chamfer 6 is turned at one side of the outer surface 3 of the bearing far away from the reference surface, and a circle of first sealing groove 7 is turned at one side of the inner surface 4 of the bearing far away from the reference surface;
step seven: turning a sealing groove on the other side, wherein a horizontal plane on one side of the bearing outer ring 1 is used as a reference surface, the reference surface and the reference surface in the step five are respectively positioned on two sides of the bearing outer ring 1, the end surface 2 is attached to the reference surface, one side, close to the reference surface, of the outer surface 3 of the bearing is clamped, a second chamfer 8 is turned on one side, far away from the reference surface, of the outer surface 3 of the bearing, and a circle of second sealing groove 9 is turned on one side, far away from the reference surface, of the inner surface 4 of the bearing;
step eight: turning an outer circular arc, wherein the diameter of the outer surface 3 of the bearing is preset to be 75.24mm, a horizontal plane on one side of the outer ring 1 of the bearing is taken as a reference plane, the end face 2 is attached to the reference plane, a first boss 10 between the ball groove 5 and the first sealing groove 7 and a second boss 11 between the ball groove 5 and the second sealing groove 9 are clamped, the outer surface 3 of the bearing is turned into an arc shape, and the difference between the diameter of the outer surface 3 of the bearing and the preset value is measured to be 0.04mm after turning, so that a crude product of the outer ring of the bearing is obtained;
step nine: and (5) performing heat treatment, namely performing heat treatment on the bearing outer ring crude product obtained in the step eight at 850 ℃ to obtain a bearing outer ring finished product.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms bearing outer ring 1, end face 2, bearing outer surface 3, bearing inner surface 4, ball groove 5, first chamfer 6, first seal groove 7, second chamfer 8, second seal groove 9, first land 10, second land 11, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (9)
1. A method for processing an outer ring of a high-precision deep groove ball bearing is characterized by comprising the following steps:
the method comprises the following steps: blanking, namely transferring the bearing outer ring (1) to a grinding platform;
step two: end face grinding, namely roughly grinding the end faces (2) on the two sides of the bearing outer ring (1), and then finely grinding the end faces (2) on the two sides of the bearing outer ring (1);
step three: grinding the outer surface, roughly grinding the outer surface (3) of the bearing outer ring (1), and then finely grinding the outer surface (3) of the bearing outer ring (1);
step four: turning the inner surface, namely taking a horizontal plane positioned on one side of the bearing outer ring (1) as a reference surface, attaching the end surface (2) to the reference surface, clamping the outer surface (3) of the bearing, and turning and polishing the inner surface (4) of the bearing;
step five: turning a ball channel, measuring the outer diameter, the inner diameter and the height of the bearing outer ring (1), estimating the times of cutter separation in turning, taking a horizontal plane on one side of the bearing outer ring (1) as a reference surface, attaching the end surface (2) to the reference surface, clamping one side of the outer surface (3) of the bearing close to the reference surface, and turning a circle of ball groove (5) at the center position of the inner surface (4) of the bearing;
step six: turning a sealing groove at one side, taking a horizontal plane positioned at one side of the bearing outer ring (1) as a reference surface, attaching the end surface (2) to the reference surface, clamping one side of the bearing outer surface (3) close to the reference surface, turning a first chamfer (6) at one side of the bearing outer surface (3) far away from the reference surface, and turning a circle of first sealing groove (7) at one side of the bearing inner surface (4) far away from the reference surface;
step seven: turning a sealing groove on the other side, wherein a horizontal plane on one side of the bearing outer ring (1) is used as a reference surface, the reference surface and the reference surface in the step five are respectively positioned on two sides of the bearing outer ring (1), the end surface (2) is attached to the reference surface, one side, close to the reference surface, of the outer surface (3) of the clamping bearing is clamped, a second chamfer (8) is turned on one side, far away from the reference surface, of the outer surface (3) of the bearing, and a circle of second sealing groove (9) is turned on one side, far away from the reference surface, of the inner surface (4) of the bearing;
step eight: turning an outer circular arc, namely taking a horizontal plane on one side of the bearing outer ring (1) as a reference plane, attaching the end face (2) to the reference plane, clamping a first boss (10) between the ball groove (5) and the first sealing groove (7) and a second boss (11) between the ball groove (5) and the second sealing groove (9), and turning the outer surface (3) of the bearing into a circular arc shape to obtain a crude product of the bearing outer ring;
step nine: and (5) performing heat treatment, namely performing heat treatment on the crude product of the bearing outer ring obtained in the step eight at the temperature of 800-900 ℃ to obtain a finished product of the bearing outer ring.
2. The high-precision deep groove ball bearing outer ring machining method as claimed in claim 1, characterized in that: in the second step, the width tolerance of the rough-ground bearing outer ring (1) is not more than +/-0.04, and the width tolerance of the fine-ground bearing outer ring (1) is not more than +/-0.03.
3. The high-precision deep groove ball bearing outer ring machining method as claimed in claim 1, characterized in that: in the second step, the parallelism between the end faces (2) on the two sides of the rough-ground bearing outer ring (1) is 0.03, and the parallelism between the end faces (2) on the two sides of the fine-ground bearing outer ring (1) is 0.02.
4. The high-precision deep groove ball bearing outer ring machining method as claimed in claim 1, characterized in that: in the third step, the diameter tolerance of the rough-ground bearing outer ring (1) is not more than +/-0.04, and the diameter tolerance of the fine-ground bearing outer ring (1) is not more than +/-0.03.
5. The high-precision deep groove ball bearing outer ring machining method as claimed in claim 1, characterized in that: in the third step, the parallelism between the tangent planes at the two ends of the diameter of the outer surface (3) of the bearing after rough grinding is 0.03, and the parallelism between the tangent planes at the two ends of the diameter of the outer surface (3) of the bearing after fine grinding is 0.02.
6. The high-precision deep groove ball bearing outer ring machining method as claimed in claim 1, characterized in that: in the fourth step, the parallelism between the tangent planes at the two ends of the diameter of the bearing inner surface (4) after turning is within 0.03, and the diameter tolerance of the bearing inner surface (4) is not more than +/-0.04.
7. The high-precision deep groove ball bearing outer ring machining method as claimed in claim 1, characterized in that: in the fifth step, the bottom surface of the ball groove (5) is arc-shaped, the tolerance of the radius of the arc-shaped bottom surface is not more than +/-0.04, and the radian tolerance is not more than +/-0.04.
8. The high-precision deep groove ball bearing outer ring machining method as claimed in claim 1, characterized in that: and in the fifth step, the parallelism between the central line of the ball groove (5) and the end face (2) is within 0.03.
9. The high-precision deep groove ball bearing outer ring machining method as claimed in claim 1, characterized in that: and in the step eight, the diameter tolerance of the circular arc-shaped bearing outer surface (3) is not more than +/-0.04.
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| CN107931986B (en) * | 2017-11-17 | 2020-04-17 | 宁波实隆轴承有限公司 | Method for processing bearing outer ring with single-side flange |
| CN108015498B (en) * | 2017-12-05 | 2019-10-11 | 中国航发哈尔滨轴承有限公司 | A kind of angular contact ball bearing turning processing method of the outer ring with elastic support |
| CN108644231A (en) * | 2018-03-31 | 2018-10-12 | 芜湖之优轴承有限公司 | A kind of deep groove ball bearing processing technology |
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2020
- 2020-09-02 CN CN202010907953.1A patent/CN112008346B/en active Active
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