CN113464554A - Conical retainer production method, conical retainer and conical roller bearing - Google Patents
Conical retainer production method, conical retainer and conical roller bearing Download PDFInfo
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- CN113464554A CN113464554A CN202110667319.XA CN202110667319A CN113464554A CN 113464554 A CN113464554 A CN 113464554A CN 202110667319 A CN202110667319 A CN 202110667319A CN 113464554 A CN113464554 A CN 113464554A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000004080 punching Methods 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000003698 laser cutting Methods 0.000 claims description 8
- 230000005347 demagnetization Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000004381 surface treatment Methods 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 5
- 238000005422 blasting Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
- F16C33/541—Details of individual pockets, e.g. shape or roller retaining means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
- F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
- F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/40—Shaping by deformation without removing material
- F16C2220/42—Shaping by deformation without removing material by working of thin-walled material such as sheet or tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/60—Shaping by removing material, e.g. machining
- F16C2220/62—Shaping by removing material, e.g. machining by turning, boring, drilling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/80—Shaping by separating parts, e.g. by severing, cracking
- F16C2220/82—Shaping by separating parts, e.g. by severing, cracking by cutting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/02—Mechanical treatment, e.g. finishing
- F16C2223/08—Mechanical treatment, e.g. finishing shot-peening, blasting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/30—Coating surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2235/00—Cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/14—Stamping, deep-drawing or punching, e.g. die sets
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a conical retainer production method, a conical retainer and a conical roller bearing. The production method mainly comprises the steps of blanking, primary forming, punching a window hole, pressing a slope, expanding and the like, and the large-scale conical retainer can be integrally manufactured by matching with process parameters, so that the performance of the conical retainer is far superior to that of the conical retainer produced by the traditional process, the problems of open welding and cracking and even breaking of the small end ring are solved, and the application prospect and the economic benefit are extremely high.
Description
Technical Field
The invention relates to the technical field of bearing manufacturing, in particular to a conical retainer, a conical retainer and a conical roller bearing.
Background
The conical retainer is called a conical retainer, and is used for being placed in a bearing to keep a rolling body in the bearing fixed, so that the rolling body can be effectively prevented from being rubbed and clamped. With the development of science and technology, the application scenes of the conical retainer are gradually widened, and particularly, the traditional processing mode of the large-sized retainer is steel plate welding processing, the welding part is easy to generate a welding phenomenon, the internal tissue distribution of the retainer is uneven, the strength of a small end is low, cracks are easy to generate, and even the retainer is broken.
Disclosure of Invention
Aiming at the problems of open welding and uneven distribution of internal tissues in the traditional production mode of the large-sized retainer, the invention provides an integral conical retainer production method, a conical retainer and a conical roller bearing.
The invention provides the following technical scheme: a production method of a conical retainer comprises the following steps:
the method comprises the following steps: carrying out laser cutting on the raw material to obtain an annular plate for manufacturing the conical retainer;
step two: stamping the annular plate obtained in the step one, wherein the stamping pressure is 1200-2000 tons, the beat is 20-30 minutes per piece, and the pressure maintaining time is 5-10 seconds, so that the annular plate reaches the preset thickness;
step three: stamping the annular plate obtained in the step two, wherein the stamping pressure is 1200-2000 tons, the beat is 20-30 minutes per piece, and the pressure maintaining time is 5-10 seconds, so that the plate is turned over to one side to form an integral inclined surface and an annular end surface;
step four: punching the inclined plane of the plate obtained in the third step by using a linear guide rail type servo punching structure, wherein the punching pressure is 110-250 tons, the punching speed is 5-10 times/minute, a pneumatic punching machine is adopted, the pressure maintaining time is not needed, window holes uniformly distributed along the circumferential direction of the inclined plane are formed, the window holes are surrounded by parallel narrow edges, wide edges and two groups of bevel edges, the narrow edges are close to the end face of the plate obtained in the third step, and the adjacent window holes are separated by window hole beams vertical to the end face;
step five: carrying out laser cutting on the end face of the plate obtained in the step four to form a small end ring;
step six: stamping and slope pressing are carried out on the window hole beam of the plate obtained in the step five, the stamping pressure is 110-250 tons, the stamping speed is 5-10 times/minute, a pneumatic punch is adopted, and the pressure maintaining time is not needed, so that a slope matched with the roller is formed on one side of the window hole beam positioned in the small end ring;
step seven: and D, performing stamping expansion on the conical retainer obtained in the step six, wherein the stamping pressure is 100-400 tons, the beat is 5-8 minutes per piece, and the pressure maintaining time is 3-5 seconds, so that the conical retainer reaches the preset size.
Preferably, the large port part of the plate obtained in the third step is shaped to form an annular plate extending along the center line of the plate. After the bearing is assembled, the retainer is prevented from radially jumping and interfering with the outer ring, the mouth of the retainer is shaped, and the bearing is prevented from losing efficacy.
Preferably, the end face of the plate after the punching in the fourth step is roughly lathed, and the end face of the conical retainer after the slope pressing in the sixth step is finely lathed.
Preferably, the conical retainer obtained after the seventh step is subjected to novel surface treatment by using a shot blasting machine, so that the precision of a working surface reaches Ra0.8-1.0, and the Ra of a non-working surface is less than or equal to 3.2.
Preferably, the surface-treated conical holder is demagnetized.
Preferably, the conical retainer after the demagnetization treatment is cleaned and subjected to oil soaking treatment by using ultrasonic waves.
Preferably, the error check is carried out on the cleaned and oil-soaked conical retainer, and the error range is less than or equal to 0.02 mm.
The conical retainer produced by the production method of the conical retainer comprises a large end ring and a small end ring which are coaxially and oppositely arranged, wherein the large end ring and the small end ring are connected through inclined window hole beams which are uniformly distributed in a radial shape, the adjacent window hole beams, the large end ring and the small end ring enclose window holes for installing rollers, and the diameter of the large end ring is 800-2200 mm.
A tapered roller bearing comprises an outer ring, an inner ring, rollers and the tapered retainer, wherein the rollers are arranged in window holes of the tapered retainer, and the tapered retainer is positioned between the inner ring and the outer ring.
The invention has the advantages that the parameters of the production process are changed on the basis of the original production mode of the conical retainer, advanced equipment is used, the large-sized conical retainer can be integrally manufactured, the problems that the welding seam is easy to open and the small end ring is easy to crack in the traditional production process are solved, and the invention has very high application prospect and economic benefit.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural view after blanking according to the embodiment of the present invention.
Fig. 2 is a schematic structural diagram after step three of the embodiment of the present invention.
FIG. 3 is a cross-sectional view after mouth reshaping in accordance with an embodiment of the present invention.
FIG. 4 is a schematic view of the structure after punching a window at step four in accordance with an embodiment of the present invention.
Fig. 5 is a schematic structural view after laser bottom cutting in step five of the embodiment of the present invention.
Fig. 6 is a cross-sectional view of a sixth-press-ramp rear window aperture beam in accordance with an embodiment of the present invention.
In the figure: 1. end face, 2, inclined face, 3, window hole, 4, window hole beam, 5, large end ring, 6, small end ring, 7, slope, 8 and annular plate.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment 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.
Example 1
A production method of a conical retainer comprises the following steps:
the method comprises the following steps: performing laser cutting on the raw material to obtain an annular plate for manufacturing the conical retainer, as shown in fig. 1;
step two: stamping the annular plate obtained in the step one by adopting an integral stamping forming framework, wherein the stamping pressure is 1200 tons, the beat is 20 minutes per piece, and the pressure maintaining time is 5 seconds, so that the annular plate reaches the preset thickness;
step three: stamping the annular plate obtained in the second step by adopting an integral stamping forming framework, wherein the stamping pressure is 1200 tons, the beat is 20 minutes per piece, and the pressure maintaining time is 5 seconds, so that the plate is turned over to one side to form an integral inclined plane and an annular end face, as shown in fig. 2;
the large port portion of the sheet material is reshaped to form an annular plate extending along the center line of the sheet material. After the bearing is assembled, the retainer is prevented from moving in the radial direction and interfering with the outer ring, the mouth part of the retainer is shaped, and the bearing is prevented from losing efficacy, as shown in figure 3;
step four: punching the inclined plane of the plate obtained in the third step by using a linear guide rail type servo punching structure, wherein the punching pressure is 110 tons, the punching speed is 10 times/minute, a pneumatic punching machine is adopted, pressure maintaining time is not needed, window holes uniformly distributed along the circumferential direction of the inclined plane are formed, the window holes are surrounded by parallel narrow sides, wide sides and two groups of bevel sides, the narrow sides are close to the end faces of the plate obtained in the third step, adjacent window holes are separated by window hole beams perpendicular to the end faces, the linear guide rail type servo punching structure is adopted, the mechanical transmission error is reduced, the rotating process is more stable and reliable, the processing stability of a product is improved, the bottom height dispersion difference is less than or equal to 0.4, and the equal dispersion difference is less than or equal to 0.5, as shown in figure 4;
roughly turning the end face of the conical retainer after punching the window hole;
step five: performing laser cutting on the end face of the plate obtained in the fourth step to form a small end ring, as shown in fig. 5;
step six: and D, stamping and slope pressing are carried out on the window hole beam of the plate obtained in the fifth step, the stamping pressure is 110 tons, the stamping speed is 10 times/minute, a pneumatic punch is adopted, the pressure maintaining time is not needed, a slope matched with the roller is formed on one side of the window hole beam positioned in the small end ring, the bearing assembly condition is completely simulated through three-dimensional simulation and CAE analysis, the slope is in a multi-curved-surface structure, when the retainer pressing slope is in contact with the roller, the friction is reduced, the bearing capacity is guaranteed, and the service life of the retainer is prolonged by more than 50%. The slope pressing die is machined by an inlet engraving and milling machine, and the slope pressing precision is Ra0.4, as shown in figure 6;
carrying out finish turning on the tapered retainer after the slope is pressed;
step seven: stamping and expanding the conical retainer obtained in the sixth step, wherein the stamping pressure is 100 tons, the beat is 5 minutes per piece, and the pressure maintaining time is 3 seconds, so that the conical retainer reaches the preset size, the smooth installation of the inner ring and the roller is ensured, and the flexible rotation of the riveting bearing is ensured;
step eight: performing novel surface treatment on the conical retainer obtained in the seventh step by using a shot blasting machine to ensure that the precision of a working surface reaches Ra0.8-1.0 and the Ra of a non-working surface is less than or equal to 3.2;
step nine: carrying out demagnetization treatment on the conical retainer after surface treatment;
step ten: cleaning the conical retainer after demagnetization treatment by using ultrasonic waves and soaking oil;
step eleven: carrying out error detection on the cleaned and oil-soaked conical retainer, wherein the error range is less than or equal to 0.02 mm;
step twelve: and (7) packaging and storing.
The conical retainer produced by the production method of the conical retainer comprises a large end ring and a small end ring which are coaxially and oppositely arranged, wherein the large end ring and the small end ring are connected through inclined window hole beams which are uniformly distributed in a radial shape, adjacent window hole beams, the large end ring and the small end ring enclose a window hole for installing a roller, and the diameter of the large end ring is 800 mm.
A tapered roller bearing comprises an outer ring, an inner ring, rollers and the tapered retainer, wherein the rollers are arranged in window holes of the tapered retainer, and the tapered retainer is positioned between the inner ring and the outer ring.
Example 2
A production method of a conical retainer comprises the following steps:
the method comprises the following steps: carrying out laser cutting on the raw material to obtain an annular plate for manufacturing the conical retainer;
step two: stamping the annular plate obtained in the step one by adopting an integral stamping forming framework, wherein the stamping pressure is 2000 tons, the beat is 30 minutes per piece, and the pressure maintaining time is 10 seconds, so that the annular plate reaches the preset thickness;
step three: stamping the annular plate obtained in the step two by adopting an integral stamping forming framework, wherein the stamping pressure is 2000 tons, the beat is 30 minutes per piece, and the pressure maintaining time is 10 seconds, so that the plate is turned over to one side to form an integral inclined plane and an annular end face;
the large port portion of the sheet material is reshaped to form an annular plate extending along the center line of the sheet material. After the bearing is assembled, the retainer is prevented from moving in the radial direction and interfering with the outer ring, the opening part of the retainer is shaped, and the bearing is prevented from losing efficacy;
step four: punching the inclined plane of the plate obtained in the third step by using a linear guide rail type servo punching structure, wherein the punching pressure is 250 tons, the punching speed is 5 times/minute, a pneumatic punching machine is adopted, pressure maintaining time is not needed, window holes uniformly distributed along the circumferential direction of the inclined plane are formed, the window holes are surrounded by parallel narrow sides, wide sides and two groups of bevel sides, the narrow sides are close to the end faces of the plate obtained in the third step, adjacent window holes are separated by window hole beams vertical to the end faces, the linear guide rail type servo punching structure is adopted, the mechanical transmission error is reduced, the rotating process is more stable and reliable, the processing stability of a product is improved, the bottom height dispersion difference is less than or equal to 0.4, and the equal division difference is less than or equal to 0.5;
roughly turning the end face of the conical retainer after punching the window hole;
step five: carrying out laser cutting on the end face of the plate obtained in the step four to form a small end ring;
step six: and D, stamping and pressing the window hole beam of the plate obtained in the step five, wherein the stamping pressure is 250 tons, the stamping speed is 5 times/minute, a pneumatic punch is adopted, the pressure maintaining time is not needed, a slope matched with the roller is formed on one side of the window hole beam positioned in the small end ring, the bearing assembly condition is completely simulated through three-dimensional simulation and CAE analysis, the slope is in a multi-curved-surface structure, when the retainer pressing slope is in contact with the roller, the friction is reduced, the bearing capacity is ensured, and the service life of the retainer is prolonged by more than 50%. The slope pressing die is processed by adopting an inlet engraving and milling machine, and the slope pressing precision is Ra0.4;
carrying out finish turning on the tapered retainer after the slope is pressed;
step seven: stamping and expanding the conical retainer obtained in the sixth step, wherein the stamping pressure is 400 tons, the beat is 8 minutes per piece, and the pressure maintaining time is 5 seconds, so that the conical retainer reaches the preset size, the smooth installation of the inner ring and the roller is ensured, and the flexible rotation of the riveting bearing is ensured;
step eight: performing novel surface treatment on the conical retainer obtained in the seventh step by using a shot blasting machine to ensure that the precision of a working surface reaches Ra0.8-1.0 and the Ra of a non-working surface is less than or equal to 3.2;
step nine: carrying out demagnetization treatment on the conical retainer after surface treatment;
step ten: cleaning the conical retainer after demagnetization treatment by using ultrasonic waves and soaking oil;
step eleven: carrying out error detection on the cleaned and oil-soaked conical retainer, wherein the error range is less than or equal to 0.02 mm;
step twelve: and (7) packaging and storing.
The conical retainer produced by the production method of the conical retainer comprises a large end ring and a small end ring which are coaxially and oppositely arranged, wherein the large end ring and the small end ring are connected through inclined window hole beams which are uniformly distributed in a radial shape, adjacent window hole beams, the large end ring and the small end ring enclose window holes for mounting rollers, and the diameter of the large end ring is 2200 mm.
A tapered roller bearing comprises an outer ring, an inner ring, rollers and the tapered retainer, wherein the rollers are arranged in window holes of the tapered retainer, and the tapered retainer is positioned between the inner ring and the outer ring.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The production method of the conical retainer is characterized by comprising the following steps of:
the method comprises the following steps: carrying out laser cutting on the raw material to obtain an annular plate for manufacturing the conical retainer;
step two: stamping the annular plate obtained in the step one, wherein the stamping pressure is 1200-2000 tons, the beat is 20-30 minutes per piece, and the pressure maintaining time is 5-10 seconds, so that the annular plate reaches the preset thickness;
step three: stamping the annular plate obtained in the step two, wherein the stamping pressure is 1200-2000 tons, the beat is 20-30 minutes per piece, and the pressure maintaining time is 5-10 seconds, so that the plate is turned over to one side to form an integral inclined surface and an annular end surface;
step four: punching the inclined plane of the plate obtained in the third step by using a linear guide rail type servo punching structure, wherein the punching pressure is 110-250 tons, the punching speed is 5-10 times/minute, a pneumatic punching machine is adopted, the pressure maintaining time is not needed, window holes uniformly distributed along the circumferential direction of the inclined plane are formed, the window holes are surrounded by parallel narrow edges, wide edges and two groups of bevel edges, the narrow edges are close to the end face of the plate obtained in the third step, and the adjacent window holes are separated by window hole beams vertical to the end face;
step five: carrying out laser cutting on the end face of the plate obtained in the step four to form a small end ring;
step six: stamping and slope pressing are carried out on the window hole beam of the plate obtained in the step five, the stamping pressure is 110-250 tons, the stamping speed is 5-10 times/minute, a pneumatic punch is adopted, and the pressure maintaining time is not needed, so that a slope matched with the roller is formed on one side of the window hole beam positioned in the small end ring;
step seven: and D, performing stamping expansion on the conical retainer obtained in the step six, wherein the stamping pressure is 100-400 tons, the beat is 5-8 minutes per piece, and the pressure maintaining time is 3-5 seconds, so that the conical retainer reaches the preset size.
2. The method for producing a conical holder as defined in claim 1, wherein the large end portion of the plate material obtained in the third step is reformed to form an annular plate extending along the center line of the plate material.
3. The method for producing a conical holder as claimed in claim 2, wherein the end face of the plate after the punching in the fourth step is roughly turned, and the end face of the conical holder after the bank in the sixth step is finely turned.
4. The method for producing the conical retainer as claimed in claim 3, wherein the conical retainer obtained after the seventh step is subjected to novel surface treatment by using a shot blasting machine, so that the accuracy of a working surface reaches Ra0.8-1.0, and the Ra of a non-working surface is less than or equal to 3.2.
5. The method for producing a conical holder according to claim 4, wherein the surface-treated conical holder is subjected to demagnetization.
6. The method for producing a conical holder according to claim 5, wherein the conical holder after demagnetization is cleaned and subjected to oil-soaking treatment using ultrasonic waves.
7. The method for producing a conical retainer according to claim 6, wherein the error of the conical retainer after the cleaning and oil-soaking treatment is checked to be within 0.02 mm or less.
8. The conical cage produced by the method for producing the conical cage as claimed in claims 1 to 7, which comprises a large end ring and a small end ring which are coaxially arranged in an opposite manner, wherein the large end ring and the small end ring are connected through inclined window hole beams, the window hole beams are uniformly distributed in a radial shape, adjacent window hole beams, the large end ring and the small end ring enclose window holes for installing rollers, and the diameter of the large end ring is 800-2200 mm.
9. A tapered roller bearing comprising an outer race, an inner race, rollers and a tapered cage as claimed in claim 8, the rollers being mounted in apertures in the tapered cage, the tapered cage being located between the inner race and the outer race.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110667319.XA CN113464554B (en) | 2021-06-16 | 2021-06-16 | Conical retainer production method, conical retainer and conical roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110667319.XA CN113464554B (en) | 2021-06-16 | 2021-06-16 | Conical retainer production method, conical retainer and conical roller bearing |
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| CN114210869A (en) * | 2021-10-27 | 2022-03-22 | 山东金帝精密机械科技股份有限公司 | Production method and production device for stamping retainer of angular contact bearing |
| CN116944810A (en) * | 2023-07-18 | 2023-10-27 | 金源(山东)新能源科技发展有限公司 | Composite processing technology of bearing retainer and bearing retainer |
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