CN114952195A - Production process of cylindrical roller bearing - Google Patents
Production process of cylindrical roller bearing Download PDFInfo
- Publication number
- CN114952195A CN114952195A CN202210639600.7A CN202210639600A CN114952195A CN 114952195 A CN114952195 A CN 114952195A CN 202210639600 A CN202210639600 A CN 202210639600A CN 114952195 A CN114952195 A CN 114952195A
- Authority
- CN
- China
- Prior art keywords
- bearing
- outer ring
- roller
- heat treatment
- production process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 238000000227 grinding Methods 0.000 claims abstract description 33
- 238000005242 forging Methods 0.000 claims abstract description 26
- 238000007514 turning Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000004080 punching Methods 0.000 claims abstract description 6
- 229910004534 SiMn Inorganic materials 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 20
- 238000010791 quenching Methods 0.000 claims description 20
- 230000000171 quenching effect Effects 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 238000000137 annealing Methods 0.000 claims description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 7
- 230000001133 acceleration Effects 0.000 claims description 5
- 239000004359 castor oil Substances 0.000 claims description 5
- 235000019438 castor oil Nutrition 0.000 claims description 5
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 229910001562 pearlite Inorganic materials 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000005496 tempering Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/02—Making machine elements balls, rolls, or rollers, e.g. for bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/04—Making machine elements ball-races or sliding 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- 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
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
-
- 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
-
- 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
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
-
- 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
- F16C2220/46—Shaping by deformation without removing material by forging
-
- 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
-
- 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
- F16C2220/70—Shaping by removing material, e.g. machining by grinding
-
- 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
- F16C2223/42—Coating surfaces by spraying the coating material, e.g. plasma spraying
-
- 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
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Rolling Contact Bearings (AREA)
- Forging (AREA)
Abstract
The invention discloses a production process of a cylindrical roller bearing, which has the technical scheme main points that: the method comprises the following steps: s1, cold heading forming roller: placing the bar material in a cold heading die at room temperature, and cold heading the bearing roller by using a punching machine; s2, hot forging inner and outer rings: producing a bearing inner ring and a bearing outer ring by adopting a hot forging die, wherein the materials of the bearing outer ring and the bearing inner ring are selected from CCr15 or CCr15 SiMn; s3, primary turning: carrying out primary turning on the formed roller and the formed inner and outer rings of the bearing by using a lathe; s4, heat treatment; s5, grinding; s6, assembling; s7, detecting a bearing; the production process of the cylindrical roller bearing has the advantage of simple steps, and the produced bearing has good comprehensive performance.
Description
Technical Field
The invention relates to the field of bearing processing, in particular to a production process of a cylindrical roller bearing.
Background
The cylindrical roller bearing is widely applied, and comprises a ferrule consisting of a bearing outer ring and a bearing inner ring and a retainer provided with rollers, and the rollers are arranged in parallel in the internal structure of the cylindrical roller bearing; the cylindrical roller belongs to a centripetal rolling bearing, and rolling bodies adopted by the internal structure of the cylindrical roller are rollers which are arranged in parallel and mainly bear radial load, so that the cylindrical roller has strong bearing capacity and large load and can bear large impact.
However, the prior art still has some disadvantages, such as: the production process is complex, and the comprehensive performance of the bearing roller, the inner ring and the outer ring is easily reduced because the bearing roller, the inner ring and the outer ring are not subjected to heat treatment.
Disclosure of Invention
In view of the problems mentioned in the background, it is an object of the present invention to provide a process for producing a cylindrical roller bearing, which solves the problems mentioned in the background.
The technical purpose of the invention is realized by the following technical scheme:
the production process of the cylindrical roller bearing comprises the following steps:
s1, cold heading forming roller: placing the bar material in a cold heading die at room temperature, and cold heading the bearing roller by using a punching machine;
s2, hot forging inner and outer rings: producing a bearing inner ring and a bearing outer ring by adopting a hot forging die, wherein the materials of the bearing outer ring and the bearing inner ring are selected from CCr15 or CCr15 SiMn;
s3, primary turning: carrying out primary turning on the formed roller and the formed inner and outer rings of the bearing by using a lathe;
s4, heat treatment: carrying out heat treatment on the roller, the bearing inner ring and the bearing outer ring, wherein the heat treatment process comprises the steps of firstly carrying out spheroidizing annealing on the roller in a heat treatment furnace to form a spherical pearlite structure, placing the bearing outer ring and the bearing inner ring in the heat treatment furnace to be heated to 40-50 ℃ above Ac1, then carrying out quenching in a quenching liquid, and carrying out low-temperature tempering after quenching;
s5, grinding: placing the roller, the bearing inner ring and the bearing outer ring after heat treatment on a grinding machine for fine grinding;
s6, assembling: heating the bearing outer ring by using an electric heater, and placing the roller and the retainer between the bearing outer ring and the bearing inner ring;
s7, bearing detection: detecting the size, vibration speed and vibration acceleration of the bearing;
s8, rust prevention and warehousing: spraying an antirust coating on the bearing end face which is qualified by detection, and warehousing the coating after the coating is dried.
Preferably, the S1 adopts multi-station cold heading, the design demoulding gradient of the cold heading die is 20 '-30', the material of the cold heading is an annealed spheroidized structure iron matrix, and the hardness is 190-205 HBS.
Preferably, when the inner and outer rings are hot forged in S2, the workpiece is heated to 700-900 ℃ and then subjected to hot forging and die forging.
Preferably, in the initial machining of S3, the workpiece is preheated to 100-; then the face is changed to turn the end face and the inner hole is turned reversely.
Preferably, in S4, the quenching liquid used for heat treatment of the bearing outer ring and the bearing inner ring is castor oil.
Preferably, during the grinding process of S5, the bearing inner ring and the bearing outer ring are firstly ground to a roughness ra6.3 by using a grinding machine; polishing was then carried out to Ra1.8 using sandpaper.
Preferably, the S6 is to heat the outer ring of the bearing to 120-.
Preferably, in the step S8, when spraying the antirust coating, the temperature: 15-35 ℃, relative humidity: 35-75%, spraying by a spray gun for 15-25cm, and spraying by a rust-proof paint gun at a speed of: 30-60cm/s, spray pressure: 0.3-0.4 MPa.
In summary, the invention mainly has the following beneficial effects:
the production process of the cylindrical roller bearing has the advantages of simple steps, and the produced bearing has better comprehensive performance; the cylindrical roller bearing with fine structure and high strength and toughness can be produced by adopting the steps of cold heading forming of the roller, hot forging of the inner ring and the outer ring, primary turning, heat treatment, grinding, assembly, bearing detection, rust prevention and warehousing and the like.
Drawings
FIG. 1 is a block flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, the production process of the cylindrical roller bearing comprises the following steps:
s1, cold heading forming roller: placing the bar material in a cold heading die at room temperature, and cold heading the bearing roller by using a punching machine;
s2, hot forging the inner ring and the outer ring: producing a bearing inner ring and a bearing outer ring by adopting a hot forging die, wherein the materials of the bearing outer ring and the bearing inner ring are selected from CCr 15;
s3, primary turning: carrying out primary turning on the formed roller and the formed inner and outer rings of the bearing by using a lathe;
s4, heat treatment: carrying out heat treatment on the roller, the bearing inner ring and the bearing outer ring, wherein the heat treatment process comprises the steps of firstly carrying out spheroidizing annealing on the roller in a heat treatment furnace to form a spherical pearlite structure, placing the bearing outer ring and the bearing inner ring in the heat treatment furnace to be heated to 40 times of Ac1, then quenching in a quenching liquid, and carrying out low-temperature tempering after quenching;
s5, grinding: placing the roller, the bearing inner ring and the bearing outer ring after heat treatment on a grinding machine for fine grinding;
s6, assembling: heating the bearing outer ring by using an electric heater, and placing the roller and the retainer between the bearing outer ring and the bearing inner ring;
s7, bearing detection: detecting the size, vibration speed and vibration acceleration of the bearing;
s8, antirust warehousing: spraying an antirust coating on the bearing end face which is qualified by detection, and warehousing the coating after the coating is dried.
Wherein, adopt multistation cold-heading in S1, and the design drawing of patterns slope of cold-heading mould is 20', and the material of cold-heading is spheroidized structure iron matrix after the annealing, and the hardness is 190 HBS.
When the inner and outer rings are hot forged in the step S2, the workpiece is heated to 700 ℃ and then hot forging and die forging are performed.
When the S3 is subjected to primary turning, the workpiece is preheated to 100 ℃, the end face is roughly turned, and then the inner hole is roughly turned; then the face is changed to turn the end face and the inner hole is turned reversely.
In the step S4, the quenching liquid used for the heat treatment of the bearing outer ring and the bearing inner ring is castor oil.
When the grinding process of S5 is carried out, firstly, a grinding machine is used for grinding the bearing inner ring and the bearing outer ring to the roughness Ra6.3; polishing was then carried out to Ra1.8 using sandpaper.
Wherein, when the S6 is assembled, the bearing outer ring is heated to 120 ℃ by an electric heater.
Wherein, in the step S8, when spraying the antirust coating, the temperature is: 15 ℃, relative humidity: 35%, spray gun spraying 15cm, antirust paint gun speed: 30cm/s, spray pressure: 0.3 MPa.
The production process of the cylindrical roller bearing has the advantages of simple steps, and the produced bearing has good comprehensive performance; the cylindrical roller bearing with fine structure and high obdurability can be produced by adopting the steps of roller forming by cold heading, inner and outer rings processing by hot forging, primary turning, heat treatment, grinding, assembly, bearing detection, rust prevention, warehousing and the like.
Example 2
Referring to fig. 1, the production process of the cylindrical roller bearing comprises the following steps:
s1, cold heading forming roller: placing the bar material in a cold heading die at room temperature, and cold heading the bearing roller by using a punching machine;
s2, hot forging inner and outer rings: producing a bearing inner ring and a bearing outer ring by adopting a hot forging die, wherein the materials of the bearing outer ring and the bearing inner ring are selected from CCr15 SiMn;
s3, primary turning: carrying out primary turning on the formed roller and the formed inner and outer rings of the bearing by using a lathe;
s4, heat treatment: carrying out heat treatment on the roller, the bearing inner ring and the bearing outer ring, wherein the heat treatment process comprises the steps of firstly carrying out spheroidizing annealing on the roller in a heat treatment furnace to form a spherical pearlite structure, placing the bearing outer ring and the bearing inner ring in the heat treatment furnace to be heated to 50 degrees above Ac1, then quenching in a quenching liquid, and carrying out low-temperature tempering after quenching;
s5, grinding: placing the roller, the bearing inner ring and the bearing outer ring after heat treatment on a grinding machine for fine grinding;
s6, assembling: heating the bearing outer ring by using an electric heater, and placing the roller and the retainer between the bearing outer ring and the bearing inner ring;
s7, bearing detection: detecting the size, vibration speed and vibration acceleration of the bearing;
s8, rust prevention and warehousing: spraying an antirust coating on the bearing end face which is qualified by detection, and warehousing the coating after the coating is dried.
Wherein, adopt multistation cold-heading in S1, and the design drawing of patterns slope of cold-heading mould is 30', and the material of cold-heading is spheroidized structure iron matrix after the annealing, and hardness is 205 HBS.
When the inner and outer rings are hot forged in the step S2, the workpiece is heated to 900 ℃ and then hot forging and die forging are performed.
When the S3 is subjected to primary turning, the workpiece is preheated to 120 ℃, the end face is roughly turned firstly, and then the inner hole is roughly turned; then the face is changed to turn the end face and the inner hole is turned reversely.
In the step S4, the quenching liquid used for the heat treatment of the bearing outer ring and the bearing inner ring is castor oil.
When the grinding process of S5 is carried out, firstly, a grinding machine is used for grinding the bearing inner ring and the bearing outer ring to the roughness Ra6.3; polishing was then carried out to Ra1.8 using sandpaper.
Wherein, when the S6 is assembled, the bearing outer ring is heated to 130 ℃ by the electric heater.
Wherein, in the step S8, when spraying the antirust coating, the temperature is: 35 ℃, relative humidity: 75%, spray gun spraying 25cm, antirust paint gun speed: 60cm/s, spray pressure: 0.4 MPa.
The production process of the cylindrical roller bearing has the advantages of simple steps, and the produced bearing has good comprehensive performance; the cylindrical roller bearing with fine structure and high strength and toughness can be produced by adopting the steps of cold heading forming of the roller, hot forging of the inner ring and the outer ring, primary turning, heat treatment, grinding, assembly, bearing detection, rust prevention and warehousing and the like.
Example 3
Referring to fig. 1, the production process of the cylindrical roller bearing comprises the following steps:
s1, cold heading forming roller: placing the bar material in a cold heading die at room temperature, and cold heading the bearing roller by using a punching machine;
s2, hot forging inner and outer rings: producing a bearing inner ring and a bearing outer ring by adopting a hot forging die, wherein the materials of the bearing outer ring and the bearing inner ring are selected from CCr 15;
s3, primary turning: carrying out primary turning on the formed roller and the formed inner and outer rings of the bearing by using a lathe;
s4, heat treatment: carrying out heat treatment on the roller, the bearing inner ring and the bearing outer ring, wherein the heat treatment process comprises the steps of firstly carrying out spheroidizing annealing on the roller in a heat treatment furnace to form a spherical pearlite structure, placing the bearing outer ring and the bearing inner ring in the heat treatment furnace to be heated to 45 degrees above Ac1, then quenching in a quenching liquid, and carrying out low-temperature tempering after quenching;
s5, grinding: placing the roller, the bearing inner ring and the bearing outer ring after heat treatment on a grinding machine for fine grinding;
s6, assembling: heating the bearing outer ring by using an electric heater, and placing the roller and the retainer between the bearing outer ring and the bearing inner ring;
s7, bearing detection: detecting the size, vibration speed and vibration acceleration of the bearing;
s8, antirust warehousing: spraying an antirust coating on the bearing end face which is qualified by detection, and warehousing the coating after the coating is dried.
Wherein, adopt multistation cold-heading in S1, and the design drawing of patterns slope of cold-heading mould is 25', and the material of cold-heading is spheroidized structure iron matrix after the annealing, and the hardness is 195 HBS.
Wherein, when the inner and outer rings are hot forged in the step S2, the workpiece is heated to 780 ℃ and then hot forging and die forging are carried out.
When the S3 is subjected to primary turning, the workpiece is preheated to 110 ℃, the end face is roughly turned firstly, and then the inner hole is roughly turned; then the face is changed to turn the end face and the inner hole is turned reversely.
In the step S4, the quenching liquid used for the heat treatment of the bearing outer ring and the bearing inner ring is castor oil.
When the grinding process of S5 is carried out, firstly, a grinding machine is used for grinding the bearing inner ring and the bearing outer ring to the roughness Ra6.3; polishing was then carried out to Ra1.8 using sandpaper.
Wherein, when the S6 is assembled, the bearing outer ring is heated to 125 ℃ by an electric heater.
Wherein, in the step S8, when spraying the antirust coating, the temperature is: 22 ℃, relative humidity: 55%, spray gun spraying 18cm, antirust paint gun speed: 45cm/s, spray pressure: 0.35 MPa.
The production process of the cylindrical roller bearing has the advantages of simple steps, and the produced bearing has good comprehensive performance; the cylindrical roller bearing with fine structure and high strength and toughness can be produced by adopting the steps of cold heading forming of the roller, hot forging of the inner ring and the outer ring, primary turning, heat treatment, grinding, assembly, bearing detection, rust prevention and warehousing and the like.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The production process of the cylindrical roller bearing is characterized in that: the method comprises the following steps:
s1, cold heading forming roller: placing the bar material in a cold heading die at room temperature, and cold heading the bearing roller by using a punching machine;
s2, hot forging inner and outer rings: producing a bearing inner ring and a bearing outer ring by adopting a hot forging die, wherein the materials of the bearing outer ring and the bearing inner ring are selected from CCr15 or CCr15 SiMn;
s3, primary turning: carrying out primary turning on the formed roller and the formed inner and outer rings of the bearing by using a lathe;
s4, heat treatment: carrying out heat treatment on the roller, the bearing inner ring and the bearing outer ring, wherein the heat treatment process comprises the steps of firstly carrying out spheroidizing annealing on the roller in a heat treatment furnace to form a spherical pearlite structure, placing the bearing outer ring and the bearing inner ring in the heat treatment furnace to be heated to 40-50 ℃ above Ac1, then quenching in a quenching liquid, and carrying out low-temperature tempering after quenching;
s5, grinding: placing the roller, the bearing inner ring and the bearing outer ring after heat treatment on a grinding machine for fine grinding;
s6, assembling: heating the bearing outer ring by using an electric heater, and placing the roller and the retainer between the bearing outer ring and the bearing inner ring;
s7, bearing detection: detecting the size, vibration speed and vibration acceleration of the bearing;
s8, rust prevention and warehousing: spraying an antirust coating on the bearing end face which is qualified by detection, and warehousing the coating after the coating is dried.
2. The production process of a cylindrical roller bearing according to claim 1, characterized in that: the S1 adopts multi-station cold heading, the design demoulding gradient of the cold heading die is 20 '-30', the material of the cold heading is an annealed spheroidized structure iron matrix, and the hardness is 190-205 HBS.
3. The production process of a cylindrical roller bearing according to claim 1, characterized in that: when the inner and outer rings are hot forged in S2, the workpiece is heated to 700-900 ℃ and then hot forging and die forging are carried out.
4. The production process of a cylindrical roller bearing according to claim 1, characterized in that: when the S3 is subjected to primary machining, the workpiece is preheated to 100-120 ℃, the end face is roughly machined, and then the inner hole is roughly machined; then the face is changed to turn the end face and the inner hole is turned reversely.
5. The production process of a cylindrical roller bearing according to claim 1, characterized in that: in the step S4, the quenching liquid used for the heat treatment of the bearing outer ring and the bearing inner ring is castor oil.
6. The production process of a cylindrical roller bearing according to claim 1, characterized in that: when the grinding process of S5 is carried out, firstly, the bearing inner ring and the bearing outer ring are ground to the roughness Ra6.3 by using a grinding machine; polishing was then carried out to Ra1.8 using sandpaper.
7. The production process of a cylindrical roller bearing according to claim 1, characterized in that: and S6, heating the bearing outer ring to 120-130 ℃ by using an electric heater during assembly.
8. The production process of a cylindrical roller bearing according to claim 1, characterized in that: in the step S8, when spraying the anticorrosive coating, the temperature: 15-35 ℃, relative humidity: 35-75%, spraying by a spray gun for 15-25cm, and spraying by a rust-proof paint gun at a speed of: 30-60cm/s, spray pressure: 0.3-0.4 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639600.7A CN114952195A (en) | 2022-06-07 | 2022-06-07 | Production process of cylindrical roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210639600.7A CN114952195A (en) | 2022-06-07 | 2022-06-07 | Production process of cylindrical roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114952195A true CN114952195A (en) | 2022-08-30 |
Family
ID=82960559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210639600.7A Pending CN114952195A (en) | 2022-06-07 | 2022-06-07 | Production process of cylindrical roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114952195A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301676A (en) * | 2008-06-17 | 2008-11-12 | 浙江天马轴承股份有限公司 | Large size roller cold-upsetting and press-forming method, and cold-upsetting and press-forming mold |
| JP2009228137A (en) * | 2009-05-18 | 2009-10-08 | National Institute For Materials Science | Steel of high strength and superior in cold heading characteristic and fastening parts such as screw and bolt or formed article such as shaft superior in strength |
| CN105583588A (en) * | 2016-03-24 | 2016-05-18 | 哈尔滨汽车轴承有限公司 | Machining method for inner ring and outer ring of conical roller bearing |
| CN108500568A (en) * | 2018-04-09 | 2018-09-07 | 张家港市海工船舶机械制造有限公司 | A kind of rolling bearing processing technology |
| CN109707729A (en) * | 2018-12-29 | 2019-05-03 | 浙江同庆汽车轴承有限责任公司 | A kind of bearing and preparation method thereof |
-
2022
- 2022-06-07 CN CN202210639600.7A patent/CN114952195A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101301676A (en) * | 2008-06-17 | 2008-11-12 | 浙江天马轴承股份有限公司 | Large size roller cold-upsetting and press-forming method, and cold-upsetting and press-forming mold |
| JP2009228137A (en) * | 2009-05-18 | 2009-10-08 | National Institute For Materials Science | Steel of high strength and superior in cold heading characteristic and fastening parts such as screw and bolt or formed article such as shaft superior in strength |
| CN105583588A (en) * | 2016-03-24 | 2016-05-18 | 哈尔滨汽车轴承有限公司 | Machining method for inner ring and outer ring of conical roller bearing |
| CN108500568A (en) * | 2018-04-09 | 2018-09-07 | 张家港市海工船舶机械制造有限公司 | A kind of rolling bearing processing technology |
| CN109707729A (en) * | 2018-12-29 | 2019-05-03 | 浙江同庆汽车轴承有限责任公司 | A kind of bearing and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王顺兴: "金属热处理原理与工艺", 31 January 2019, 哈尔滨工业大学出版社, pages: 191 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106111874B (en) | A kind of processing method of automobile-use bearing forging | |
| CN105945537A (en) | Forging technology for idle gear for automobile engine | |
| CN106111876B (en) | A kind of processing method of automobile-use reverse gear forging | |
| CN102310310A (en) | Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings | |
| JPH09176740A (en) | Production of bearing ring for ball bearing | |
| CN110408885B (en) | Light gear for vehicle and manufacturing process thereof | |
| CN107414425A (en) | Wind-powered electricity generation gear ring bearing seamless ring technique | |
| CN105986074A (en) | Die steel processing technology | |
| CN104148895A (en) | Production method of rolling bearing | |
| CN111037243B (en) | Manufacturing method of parking gear of gearbox | |
| CN104551667A (en) | Cold-rolled high-hardness seamless steel pipe manufacturing method | |
| CN104551669A (en) | Production method of cold-drawn high-precision seamless steel tube | |
| CN105945536A (en) | Forging technology of third gear for intermediate shaft of automobile gearbox | |
| CN110438314B (en) | Production method of steel containing B | |
| CN106435370B (en) | Cold rolling high strength car sheet specialized high-speed steel roll and its manufacturing method | |
| US11253906B2 (en) | Method for producing a bearing component, and bearing component | |
| CN114952195A (en) | Production process of cylindrical roller bearing | |
| CN106392506A (en) | Reverse idler gear forging and pressing technology for automobile transmission | |
| KR102312107B1 (en) | Molded body manufacturing method | |
| CN107794527B (en) | The reproducing method of high-strength die steel | |
| CN110614481A (en) | Machining process of guide rail | |
| CN103639675B (en) | The processing method of curve surface of raceway and shaping dies in freewheel clutch | |
| CN103194585B (en) | Manufacturing method of motor spindle of hybrid electric vehicle | |
| CN111230430B (en) | Manufacturing process of front die of hub forging | |
| CN104759888A (en) | Manufacturing method of hot-rolled high-hardness petroleum pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |