CN112658875A - Spherical grinding method for centripetal thrust bearing ring with end surface orthodrome - Google Patents
Spherical grinding method for centripetal thrust bearing ring with end surface orthodrome Download PDFInfo
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- CN112658875A CN112658875A CN202011534617.3A CN202011534617A CN112658875A CN 112658875 A CN112658875 A CN 112658875A CN 202011534617 A CN202011534617 A CN 202011534617A CN 112658875 A CN112658875 A CN 112658875A
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- grinding
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- arc
- spherical surface
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000001154 acute effect Effects 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005242 forging Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 1
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Abstract
A spherical grinding method for a centripetal thrust bearing ring with an end surface orthodrome relates to a spherical grinding method for a bearing ring. The invention aims to solve the problems that the existing grinding equipment without a proper large-arc bearing ring is difficult to grind and process large arcs. The method comprises the following steps: firstly, selecting equipment; and secondly, positioning the bearing ring workpiece by adopting an electromagnetic centerless fixture, so that the bearing ring workpiece and the magnetic pole have eccentricity, when the magnetic pole rotates around the axis of the magnetic pole, the bearing ring workpiece is tightly attached to the front and rear supports, the bearing ring workpiece obtains stable rotary motion, and meanwhile, the bed head swings around the center of the grinding machine to drive the bearing ring workpiece to swing back and forth, the grinding wheel rotates and performs transverse feeding, and the end surface arc spherical surface of the bearing ring workpiece is ground. The invention realizes the processing of the thrust bearing inner ring with the structure that the end surface of one side is provided with a large arc surface, the arc radius is 133.5mm, and the diameter of the outer circle of the ferrule is 84 mm.
Description
Technical Field
The invention relates to a spherical grinding method of a bearing ring.
Background
The structure of the bearing ring is shown in figure 1 of the attached drawings of the specification, the inner ring of the thrust bearing is provided with a large arc surface on one side end surface, the arc radius is 133.5mm, and the diameter of the outer circle of the ring is 84 mm. The requirements on the precision and the surface roughness of the channel and the arc surface are high, no proper equipment for processing the arc surface exists at present, and the processing is difficult.
Disclosure of Invention
The invention aims to solve the problems that the existing grinding equipment without a proper large-arc bearing ring and the large-arc grinding are difficult to process, and provides a spherical grinding method for a radial thrust bearing ring with an end surface large-arc.
A spherical grinding method for a radial thrust bearing ring with an end surface orthodrome is completed according to the following steps:
firstly, selecting equipment:
moving the working head frame backwards by adopting a swinging head grinding machine to enable a swinging arc to reach R133.5mm;
secondly, grinding:
the method comprises the steps of positioning a bearing ring workpiece by adopting an electromagnetic centerless clamp, positioning the bearing ring workpiece on a front support and a rear support in the electromagnetic centerless clamp by using the outer diameter of a ground inner ring and one end face, generating suction by using a direct current electromagnetic coil, sucking the end face of the bearing ring workpiece on the end face of a magnetic pole, enabling the bearing ring workpiece and the magnetic pole to have eccentric amount, enabling the bearing ring workpiece to be tightly attached to the front support and the rear support when the magnetic pole rotates around the axis of the magnetic pole, enabling the bearing ring workpiece to obtain stable rotary motion, simultaneously enabling a machine head to swing around the center of a grinding machine to drive the bearing ring workpiece to swing back and forth, enabling a grinding wheel to rotate and perform transverse feeding, and grinding the arc spherical surface of the end face of the bearing ring workpiece, namely completing.
The invention has the beneficial effects that:
the method realizes the processing of the thrust bearing inner ring with the structure that the end surface of one side is provided with a large arc surface, the arc radius is 133.5mm, and the diameter of the outer circle of the ferrule is 84mm, and all the requirements of the size and the precision meet the requirements of finished products.
Drawings
FIG. 1 is a schematic structural view of a bearing ring workpiece;
FIG. 2 is a schematic diagram of a dimensional structure of a bearing ring workpiece;
fig. 3 is a schematic diagram illustrating a spherical grinding method for a radial thrust bearing ring with a large end surface arc according to an embodiment.
Detailed Description
The first embodiment is as follows: the embodiment is a spherical grinding method for a radial thrust bearing ring with an end surface great arc, which is completed according to the following steps:
firstly, selecting equipment:
moving the working head frame backwards by adopting a swinging head grinding machine to enable a swinging arc to reach R133.5mm;
secondly, grinding:
the method comprises the steps of positioning a bearing ring workpiece by adopting an electromagnetic centerless clamp, positioning the bearing ring workpiece on a front support and a rear support in the electromagnetic centerless clamp by using the outer diameter of a ground inner ring and one end face, generating suction by using a direct current electromagnetic coil, sucking the end face of the bearing ring workpiece on the end face of a magnetic pole, enabling the bearing ring workpiece and the magnetic pole to have eccentric amount, enabling the bearing ring workpiece to be tightly attached to the front support and the rear support when the magnetic pole rotates around the axis of the magnetic pole, enabling the bearing ring workpiece to obtain stable rotary motion, simultaneously enabling a machine head to swing around the center of a grinding machine to drive the bearing ring workpiece to swing back and forth, enabling a grinding wheel to rotate and perform transverse feeding, and grinding the arc spherical surface of the end face of the bearing ring workpiece, namely completing.
The second embodiment is as follows: the present embodiment differs from the present embodiment in that: the outer diameter of the bearing ring workpiece is R133.5mm. Other steps are the same as in the first embodiment.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the bearing ring workpiece is prepared from a forging serving as a raw material by the following process:
firstly, a fine turning machine is provided with a groove surface, an inner diameter and an inverted inner and outer angle; secondly, turning a trenchless surface, turning the outer diameter of an inner ring and chamfering the inner and outer angles; thirdly, turning a ditch; fourthly, turning a taper hole, turning a spherical surface, and removing an acute angle between the spherical surface and the taper hole; fifthly, heat treatment; sixthly, roughly grinding the plane and the outer diameter of the inner ring; seventhly, roughly grinding the spherical surface and the inner groove; eighthly, supplementary tempering; ninthly, polishing conical surfaces and chamfers; r, rough finish;
finally grinding a plane;
finely grinding and finally grinding the outer diameter of the inner ring;
grinding the outer diameter of the inner ring;
finely grinding and finally grinding the spherical surface;
finely grinding and finally grinding the inner groove;
forming a blunt inclined plane acute angle;
acid washing, dehydrogenation, polishing and flaw detection;
roughly grinding the inner groove and finely grinding the inner groove;
roughly grinding the spherical surface, finely grinding the spherical surface and typing;
and (5) demagnetizing, cleaning and submitting. The other steps are the same as in the first or second embodiment.
The fourth concrete implementation mode: the difference between this embodiment and one of the first to third embodiments is as follows: the rough grinding spherical surface is a GC80L7V35 grinding wheel with the size of 100mm multiplied by 28mm multiplied by 20 mm. The other steps are the same as those in the first to third embodiments.
The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: the final grinding spherical surface is a GC100L7V35 grinding wheel with the size of 100mm multiplied by 28mm multiplied by 20 mm. The other steps are the same as those in the first to fourth embodiments.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is as follows: in the second step, the swing angle of the bed head around the center of the grinding machine is 10 degrees. The other steps are the same as those in the first to fifth embodiments.
The seventh embodiment: the difference between this embodiment and one of the first to sixth embodiments is: and step two, the swing center of the bed head, the arc center of the bearing ring workpiece and the center of the grinding wheel are returned. The other steps are the same as those in the first to sixth embodiments.
The following examples were used to demonstrate the beneficial effects of the present invention:
the first embodiment is as follows: a spherical grinding method for a radial thrust bearing ring with an end surface orthodrome is completed according to the following steps:
firstly, selecting equipment:
moving the working head frame backwards by adopting a swinging head grinding machine to enable a swinging arc to reach R133.5mm;
secondly, grinding:
positioning a bearing ring workpiece by adopting an electromagnetic centerless fixture, positioning the bearing ring workpiece on a front support and a rear support in the electromagnetic centerless fixture by using the outer diameter of a ground inner ring and one end surface, generating suction by using a direct current electromagnetic coil, sucking the end surface of the bearing ring workpiece on the end surface of a magnetic pole, enabling the bearing ring workpiece and the magnetic pole to have eccentric amount, enabling the bearing ring workpiece to be tightly attached to the front support and the rear support when the magnetic pole rotates around the axis of the magnetic pole, enabling the bearing ring workpiece to obtain stable rotary motion, simultaneously enabling a bed head to swing around the center of a grinding machine to drive the bearing ring workpiece to swing in a reciprocating manner, enabling a grinding wheel to rotate and perform transverse feeding, and grinding the arc spherical surface of the end surface of the bearing ring workpiece, namely completing the spherical surface grinding method;
the outer diameter of the bearing ring workpiece is R133.5mm;
the bearing ring workpiece is prepared from a forging serving as a raw material by the following process:
firstly, a fine turning machine is provided with a groove surface, an inner diameter and an inverted inner and outer angle; secondly, turning a trenchless surface, turning the outer diameter of an inner ring and chamfering the inner and outer angles; thirdly, turning a ditch; fourthly, turning a taper hole, turning a spherical surface, and removing an acute angle between the spherical surface and the taper hole; fifthly, heat treatment; sixthly, roughly grinding the plane and the outer diameter of the inner ring; seventhly, roughly grinding the spherical surface and the inner groove; eighthly, supplementary tempering; ninthly, polishing conical surfaces and chamfers; r, rough finish;
finally grinding a plane;
finely grinding and finally grinding the outer diameter of the inner ring;
grinding the outer diameter of the inner ring;
finely grinding and finally grinding the spherical surface;
finely grinding and finally grinding the inner groove;
forming a blunt inclined plane acute angle;
acid washing, dehydrogenation, polishing and flaw detection;
roughly grinding the inner groove and finely grinding the inner groove;
roughly grinding the spherical surface, finely grinding the spherical surface and typing;
and demagnetizing, cleaning and submitting;
the rough grinding spherical surface is a GC80L7V35 grinding wheel with the size of 100mm multiplied by 28mm multiplied by 20 mm;
the final grinding spherical surface is a GC100L7V35 grinding wheel with the size of 100mm multiplied by 28mm multiplied by 20 mm;
in the second step, the swing angle of the bed head around the center of the grinding machine is 10 degrees;
and step two, the swing center of the bed head, the arc center of the bearing ring workpiece and the center of the grinding wheel are returned.
FIG. 1 is a schematic structural view of a bearing ring workpiece;
FIG. 2 is a schematic diagram of a dimensional structure of a bearing ring workpiece;
fig. 3 is a schematic diagram illustrating a spherical grinding method for a radial thrust bearing ring with a large end surface arc according to an embodiment.
The beneficial effects of the first embodiment:
according to the embodiment, the thrust bearing inner ring with the structure that the end surface of one side is provided with the large arc surface, the arc radius is 133.5mm, and the diameter of the outer circle of the ferrule is 84mm is machined, and all the requirements on size and precision meet the requirements of finished products.
Claims (7)
1. A spherical grinding method for a radial thrust bearing ring with an end surface orthodrome is characterized in that the spherical grinding method for the radial thrust bearing ring with the end surface orthodrome is completed according to the following steps:
firstly, selecting equipment:
moving the working head frame backwards by adopting a swinging head grinding machine to enable a swinging arc to reach R133.5mm;
secondly, grinding:
the method comprises the steps of positioning a bearing ring workpiece by adopting an electromagnetic centerless clamp, positioning the bearing ring workpiece on a front support and a rear support in the electromagnetic centerless clamp by using the outer diameter of a ground inner ring and one end face, generating suction by using a direct current electromagnetic coil, sucking the end face of the bearing ring workpiece on the end face of a magnetic pole, enabling the bearing ring workpiece and the magnetic pole to have eccentric amount, enabling the bearing ring workpiece to be tightly attached to the front support and the rear support when the magnetic pole rotates around the axis of the magnetic pole, enabling the bearing ring workpiece to obtain stable rotary motion, simultaneously enabling a machine head to swing around the center of a grinding machine to drive the bearing ring workpiece to swing back and forth, enabling a grinding wheel to rotate and perform transverse feeding, and grinding the arc spherical surface of the end face of the bearing ring workpiece, namely completing.
2. A spherical grinding method for a centripetal thrust bearing ring with a great arc of end surface as claimed in claim 1, wherein said bearing ring workpiece has an outer diameter of r133.5 mm.
3. The spherical grinding method for the centripetal thrust bearing ring with the end surface orthodrome as claimed in claim 1, wherein the bearing ring workpiece is prepared from a forged piece by the following process:
firstly, a fine turning machine is provided with a groove surface, an inner diameter and an inverted inner and outer angle; secondly, turning a trenchless surface, turning the outer diameter of an inner ring and chamfering the inner and outer angles; thirdly, turning a ditch; fourthly, turning a taper hole, turning a spherical surface, and removing an acute angle between the spherical surface and the taper hole; fifthly, heat treatment; sixthly, roughly grinding the plane and the outer diameter of the inner ring; seventhly, roughly grinding the spherical surface and the inner groove; eighthly, supplementary tempering; ninthly, polishing conical surfaces and chamfers;r, rough finish;
finally grinding a plane;
finely and finally grinding the outer diameter of the inner ring;
grinding the outer diameter of the inner ring;
finely and finally grinding the spherical surface;
finely grinding and finally grinding the inner groove;
blunt inclined plane acute angle is formed;
acid washing, dehydrogenation, polishing and flaw detection;
roughly grinding the inner groove and finely grinding the inner groove;
roughly grinding the spherical surface, finely grinding the spherical surface and typing;
and (5) demagnetizing and cleaning and submitting.
4. A method for grinding a spherical surface of a radial thrust bearing ring with an end surface great arc as claimed in claim 3, wherein the rough grinding spherical surface is a GC80L7V35 grinding wheel with a size of 100mm x 28mm x 20 mm.
5. A method for grinding a spherical surface of a radial thrust bearing ring with a great circular arc end face as claimed in claim 3, wherein the final grinding spherical surface is a GC100L7V35 grinding wheel with the size of 100mm x 28mm x 20 mm.
6. A method for grinding a spherical surface of a radial thrust bearing ring with a great arc end face as claimed in claim 1, wherein in the second step, the head of the grinding machine swings around the center of the grinding machine by an angle of 10 °.
7. The method for grinding the spherical surface of the centripetal thrust bearing ring with the end surface great arc as claimed in claim 1, wherein in the second step, the swing center of the head, the arc center of the workpiece of the bearing ring and the center of the grinding wheel are returned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011534617.3A CN112658875A (en) | 2020-12-22 | 2020-12-22 | Spherical grinding method for centripetal thrust bearing ring with end surface orthodrome |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011534617.3A CN112658875A (en) | 2020-12-22 | 2020-12-22 | Spherical grinding method for centripetal thrust bearing ring with end surface orthodrome |
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| CN112658875A true CN112658875A (en) | 2021-04-16 |
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| CN202011534617.3A Pending CN112658875A (en) | 2020-12-22 | 2020-12-22 | Spherical grinding method for centripetal thrust bearing ring with end surface orthodrome |
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| CN109465679A (en) * | 2018-11-18 | 2019-03-15 | 柳州中通科技有限公司 | A kind of rail traffic high-precision bearing production technology |
| CN110630632A (en) * | 2019-09-30 | 2019-12-31 | 上海赛姆轴承有限公司 | Nonmagnetic bearing, coreless fixture, and method for manufacturing nonmagnetic bearing |
| CN110877236A (en) * | 2019-12-09 | 2020-03-13 | 中国航发哈尔滨轴承有限公司 | Thrust bearing ring channel lapping processing method |
| CN111571132A (en) * | 2020-05-15 | 2020-08-25 | 中国航发哈尔滨轴承有限公司 | Thin-wall bearing outer ring turning method and outer ring end surface groove symmetry measuring method of thin-wall bearing |
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2020
- 2020-12-22 CN CN202011534617.3A patent/CN112658875A/en active Pending
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| CN110630632A (en) * | 2019-09-30 | 2019-12-31 | 上海赛姆轴承有限公司 | Nonmagnetic bearing, coreless fixture, and method for manufacturing nonmagnetic bearing |
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| CN111571132A (en) * | 2020-05-15 | 2020-08-25 | 中国航发哈尔滨轴承有限公司 | Thin-wall bearing outer ring turning method and outer ring end surface groove symmetry measuring method of thin-wall bearing |
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Application publication date: 20210416 |