CN110848264B - Preparation method of bearing retainer for robot with cooling and wear-resisting structure - Google Patents

Preparation method of bearing retainer for robot with cooling and wear-resisting structure Download PDF

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Publication number
CN110848264B
CN110848264B CN201911125696.XA CN201911125696A CN110848264B CN 110848264 B CN110848264 B CN 110848264B CN 201911125696 A CN201911125696 A CN 201911125696A CN 110848264 B CN110848264 B CN 110848264B
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retainer
group
retainer body
wear
boss
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CN110848264A (en
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韩继利
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Suzhou Shengdian Enterprise Management Consulting Co.,Ltd.
Suzhou zhiao Machinery Technology Co., Ltd
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Suzhou Shengdian Enterprise Management Consulting Co ltd
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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
    • F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • 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
    • F16C33/56—Selection of substances
    • 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
    • F16C33/56—Selection of substances
    • F16C33/565—Coatings
    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
    • 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
    • F16C37/00—Cooling of bearings
    • F16C37/007—Cooling of bearings of rolling bearings

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The utility model provides a bearing retainer preparation method for robot with cooling and wear-resisting structure, belongs to mechanical basic component and makes technical field, including retainer body one, retainer body two and a set of hexagon socket head cap screws, all be equipped with a set of roller pocket hole on retainer body one and the retainer body two, be equipped with first boss on the terminal surface that retainer body one is close to retainer body two, be equipped with a set of pawl on the outer wall of first boss, the one end that retainer body two is close to retainer body one is equipped with first recess, be equipped with a set of wedge slot on the inner wall of first recess, first boss sets up in first recess, a set of pawl block is in a set of wedge slot. The split-type bearing retainer adopts a split structure design, is convenient for replacing the retainer part, radially rotates by the pawl and the wedge-shaped groove, and forms a stable-structure whole body by the retainer body I and the retainer body II through a group of hexagon socket head cap countersunk head screws, thereby prolonging the service life of the bearing.

Description

Preparation method of bearing retainer for robot with cooling and wear-resisting structure
Technical Field
The invention belongs to the technical field of robots, and particularly relates to a method for manufacturing a bearing retainer for a robot with a cooling and wear-resisting structure.
Background
The cage is used as an important bearing part and has the function of spacing the rolling bodies at equal intervals and uniformly distributing the rolling bodies on the circumference of the raceway so as to prevent the rolling bodies from colliding and rubbing with each other during working. Guiding and driving the rolling bodies to roll on the correct roller paths. The manufacturing precision and quality of the bearing directly affect the service life of the bearing.
The self-aligning roller bearing is provided with two rows of rollers, and mainly bears radial load and can bear axial load in any direction. Two rows of symmetrical spherical rollers, the outer ring of which has a common spherical raceway, and the inner ring of which has two raceways inclined at an angle to the axis of the bearing, have good aligning performance, the bearing can still be used normally when the shaft is stressed and bent or is mounted with non-concentricity, the aligning performance is different along with the difference of the bearing size series, and generally the operating speed allowed by the aligning roller bearing is lower.
The common self-aligning roller bearing retainer is mostly a stamped steel plate retainer, due to the problems in structural design, the small section of the retainer is severely rubbed with the rollers, the retainer is not subjected to surface hardening treatment, the inner ring, the outer ring and the rollers of the bearing are all subjected to quenching treatment, the hardness is between 61HRC and 65HRC, and the hardness of the common No. 10 steel plate is very low (less than 140 HB), so that the retainer of the bearing is worn during the bearing and rotating processes, the retainer is worn to a certain degree, the bearing is clamped, and the whole set of bearing fails.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a method for preparing a bearing retainer for a robot with a cooling and wear-resisting structure, which solves the problems that the temperature of the bearing retainer is increased and great wear is generated under the condition of high-speed rotation in the using process of the bearing retainer, and the service life of the bearing retainer is shortened.
The technical scheme is as follows: the invention provides a method for preparing a bearing retainer for a robot with a cooling and wear-resisting structure, which comprises a retainer body I, a retainer body II and a group of hexagon socket countersunk head screws, the first retainer body and the second retainer body are connected through a group of inner hexagonal countersunk head screws, a group of roller pocket holes are respectively arranged on the first retainer body and the second retainer body, a first lug boss is arranged on the end surface of the first retainer body close to the second retainer body, a group of pawls are arranged on the outer wall of the first lug boss, a first groove is arranged at one end of the second retainer body close to the first retainer body, a group of wedge-shaped grooves are arranged on the inner wall of the first groove, the first boss is arranged in the first groove, the group of pawls is clamped in the group of wedge-shaped grooves, and the roller pockets on the first retainer body and the roller pockets on the second retainer body are arranged in a staggered manner. The manufacturing method of the bearing retainer for the robot with the cooling and wear-resisting structure adopts the design of a split structure, is convenient for replacing the retainer part, places the retainer part to rotate in the radial direction through the pawl and the wedge-shaped groove, and forms a whole with a stable structure by the retainer body I and the retainer body II through a group of inner hexagonal countersunk head screws, thereby prolonging the service life of the bearing. The roller pockets on two sides form an asymmetric structure, so that the rollers also have an asymmetric structure, the smoothness of the bearing can be improved, and clamping stagnation is avoided.
Further, in the manufacturing method of the bearing retainer for the robot with the cooling and wear-resisting structure, the second boss is arranged between the first retainer body and the first boss, the diameter of the second boss is larger than that of the first boss and the first groove, the diameter of the second boss is smaller than that of the first retainer body, and the first retainer body, the second retainer body and the second boss form the annular groove. And lubricating oil can enter the groove between the first retainer body and the second retainer body to lubricate the bearing.
Further, according to the manufacturing method of the bearing retainer with the cooling and wear-resisting structure for the robot, a group of first passages is arranged on the first retainer body and is arranged along the axial direction of the first retainer body, the first passages are communicated with the grooves, a group of first oil holes are formed in two sides of each first passage, one ends of the group of first oil holes are communicated with the first passages, and the other ends of the group of first oil holes are communicated with the roller pockets. And lubricating oil in the groove enters the first oil hole through the first channel and further enters the roller pocket hole to lubricate the roller on the first retainer body.
Further, according to the manufacturing method of the bearing retainer with the cooling and wear-resisting structure for the robot, a group of second passages is arranged on the retainer body II and arranged along the axial direction of the retainer body II, the second passages are communicated with the grooves, a group of oil holes II are formed in two sides of each second passage, one ends of the group of oil holes II are communicated with the second passages, and the other ends of the group of oil holes II are communicated with the roller pockets. And lubricating oil in the groove enters the oil hole II through the second channel and further enters the roller pocket hole to lubricate the roller on the retainer body II.
Further, according to the manufacturing method of the bearing retainer with the cooling and wear-resisting structure for the robot, a group of first through holes are formed in the retainer body I in an annular array mode along the axial direction, a group of threaded holes are formed in the retainer body II in an annular array mode along the axial direction, the threaded holes and the first through holes are arranged in a one-to-one mode, and the threaded holes and the first through holes are connected through hexagon socket countersunk head screws. The inner hexagonal countersunk head screw penetrates through the first through hole and is in threaded connection with the threaded hole, so that the first retainer body and the second retainer body are fixed together.
Further, according to the manufacturing method of the bearing retainer with the cooling and wear-resisting structure for the robot, the retainer body I and the retainer body II are made of No. 10 steel plates, the inner walls of the roller pocket holes are in the shape of a concave arc, and the surfaces of the retainer body I and the retainer body II are coated with wear-resisting layers. And the steel plate No. 10 has higher strength. The concave arc-shaped structure is matched with the roller. The wear-resistant layer is arranged, so that the service life of the bearing is prolonged.
Further, in the preparation method of the bearing retainer for the robot with the cooling and wear-resisting structure, the bearing retainer adopts an alloy formula which comprises the following components in percentage by mass:
65-75 parts of carbon
30-50 parts of silicon
2.4 to 3.6 portions of manganese
2-5 parts of chromium
10-12 parts of cerium
Rhenium 3-4 parts
Copper 120-
45-55 parts of vanadium
3.3 to 3.5 portions of nickel
10 to 12 portions of sulfur
32 to 35 portions of phosphorus
The balance being iron.
Further, in the above method for manufacturing a bearing retainer for a robot having a cooling and wear-resistant structure, the formula of the wear-resistant layer is:
60-61 parts of titanium powder
20-21 parts of graphite
The balance being nickel powder.
Further, in the above method for manufacturing a bearing retainer for a robot having a cooling and wear-resistant structure, the wear-resistant layer further includes shellac and absolute ethyl alcohol, and the weight ratio of shellac to the mixed powder of titanium powder, graphite and nickel powder is: 1: .
Further, in the above method for preparing a bearing retainer for a robot having a cooling and wear-resistant structure, the preparation of the wear-resistant layer includes the following steps:
1: surface pretreatment of a bearing retainer: removing an oxide layer, oil stain and rust on the surface of the bearing retainer, and carrying out shot blasting texturing treatment on the surface of the bearing retainer until the surface roughness is Ra3.2-Ra6.3 to obtain a matrix to be coated with a wear-resistant layer;
2: preparing mixed powder: respectively drying titanium powder, graphite and nickel powder at 110-150 ℃ to remove moisture, and then putting the titanium powder, the graphite and the nickel powder into a mixer to be uniformly mixed to obtain mixed powder;
3: preparing a coating material: mixing the mixed powder in the step 2 with shellac, and then adding absolute ethyl alcohol to prepare paste to obtain a coating material;
4: presetting: coating the coating material on the surface of a base body of the bearing retainer to form a pre-coating layer, and grinding the pre-coating layer into a coating to be clad with the thickness of 0.5 +/-0.02 mm after the pre-coating layer is dried and solidified;
5: laser scanning: carrying out laser scanning on the coating to be clad, wherein a rectangular light spot is used during laser scanning, the laser is continuously output, and the laser power density is 120-150W/mm2The scanning speed is 600-800 mm/min, and the lap joint rate is 5-10%; after scanning is finished, a composite wear-resistant layer is obtained on the surface of the base body of the bearing retainer;
6: and (3) post-treatment: and (3) grinding and polishing the base body of the bearing retainer with the composite wear-resistant layer on the surface by using a grinding wheel, and removing the surface oxide layer.
The technical scheme shows that the invention has the following beneficial effects: the manufacturing method of the bearing retainer for the robot with the cooling and wear-resisting structure has the advantages of simple and reasonable structure, convenience in use, low application cost and good adaptability, changes the integral structural mode of the bearing retainer into the split structure of two parts, can replace only one part of the retainer when the retainer is damaged, reduces the production cost, improves the heat dissipation effect of the bearing through the arranged lubricating channel, prolongs the service life and has high popularization value; the bearing retainer adopts an alloy formula, has higher strength and wear resistance, good cold deformation and shaping property and good surface wear resistance, improves the overall quality and the service life of a bearing product, thereby effectively improving the continuous operation time of equipment, prolonging the maintenance period of the equipment and saving the use cost of the equipment; the wear-resistant layer has the characteristics of self-lubricating function, good wear resistance and long service life.
Drawings
FIG. 1 is a schematic structural diagram illustrating a method for manufacturing a bearing retainer for a robot having a cooling and wear-resistant structure according to the present invention;
FIG. 2 is an exploded view of a method for manufacturing a bearing cage for a robot having a cooling and wear-resistant structure according to the present invention;
FIG. 3 is a schematic structural diagram of a first cage body according to the present invention;
FIG. 4 is a schematic structural view of a second cage body according to the present invention;
FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 1;
fig. 6 is a left side view of the first cage body according to the present invention.
In the figure: the retainer comprises a first retainer body 1, a second retainer body 2, an inner hexagon countersunk head screw 3, a roller pocket 4, a first boss 5, a pawl 6, a first groove 7, a wedge-shaped groove 8, a second boss 9, a groove 10, a first passage 11, a first oil hole 12, a second passage 13, a second oil hole 14, a first through hole 15 and a threaded hole 16.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example one
The preparation method of the bearing retainer with the cooling and wear-resisting structure for the robot as shown in figures 1-4 and 6 comprises a retainer body I1, a retainer body II 2 and a group of hexagon socket head cap countersunk head screws 3, the first retainer body 1 and the second retainer body 2 are connected through a group of inner hexagonal countersunk head screws 3, a group of roller pocket holes 4 are respectively arranged on the first retainer body 1 and the second retainer body 2, a first boss 5 is arranged on the end surface of the first retainer body 1 close to the second retainer body 2, a group of pawls 6 are arranged on the outer wall of the first boss 5, a first groove 7 is arranged at one end of the second retainer body 2 close to the first retainer body 1, the inner wall of the first groove 7 is provided with a group of wedge-shaped grooves 8, the first boss 5 is arranged in the first groove 7, and the group of pawls 6 are clamped in the group of wedge-shaped grooves 8. And the first retainer body 1 and the second retainer body 2 are made of No. 10 steel plates. The inner wall of the roller pocket 4 is concave arc-shaped. The surfaces of the first retainer body 1 and the second retainer body 2 are coated with wear-resistant layers. Roller pocket 4 on the retainer body 1 and roller pocket 4 on the retainer body two 2 are crisscross to be set up. In addition, a group of first through holes 15 are formed in the first retainer body 1 in an annular array along the axial direction. A group of threaded holes 16 are formed in the second retainer body 2 in an annular array mode along the axial direction, the threaded holes 16 and the first through holes 15 are arranged in a one-to-one mode, and the threaded holes 16 and the first through holes 15 are connected through the hexagon socket countersunk head screws 3. The retainer body I1 and the retainer body II 2 are arranged as two parts of a split structure, during installation, a group of pawls 6 are clamped into a group of wedge-shaped grooves 8, the pawls pass through a group of hexagon socket countersunk head screws 3 and are connected with threaded holes 16 through first through holes 15, the pawls 6 and the wedge-shaped grooves 8 are connected through a ratchet wheel connection structure, the retainer body I1 and the retainer body II 2 are prevented from rotating radially, the hexagon socket countersunk head screws 3 are prevented from moving axially, so that the retainer body I1 and the retainer body II 2 are stably formed into an integral structure, and because the bearing is stressed unevenly in the using process, once the retainer body I1 or the retainer body II 2 is worn and damaged in the using process, the bearing cannot be used normally, one part of the bearing can be replaced, the production cost is saved, and the material utilization rate is improved.
In addition, a second boss 9 is arranged between the first retainer body 1 and the first boss 5, the diameter of the second boss 9 is larger than the diameters of the first boss 5 and the first groove 7, the diameter of the second boss 9 is smaller than the diameter of the first retainer body 1, and the first retainer body 1, the second retainer body 2 and the second boss 9 form a circular groove 10. Furthermore, as shown in fig. 5, a group of first passages 11 is provided on the first retainer body 1, the first passages 11 are provided along the axial direction of the first retainer body 1, the first passages 11 communicate with the grooves 10, a group of first oil holes 12 are provided on both sides of the first passages 11, one end of the group of first oil holes 12 communicates with the first passages 11, and the other end of the group of first oil holes 12 communicates with the roller pockets 4. The retainer body II 2 is provided with a group of second passages 13, the second passages 13 are arranged along the axial direction of the retainer body II 2, the second passages 13 are communicated with the grooves 10, two sides of the second passages 13 are provided with a group of oil holes II 14, one ends of the group of oil holes II 14 are communicated with the second passages 13, and the other ends of the group of oil holes II 14 are communicated with the roller pocket 4. The annular groove 10 can be filled with lubricating oil, and the lubricating oil enters the first group of oil holes 12 and the second group of oil holes 14 through the first channel 11 and the second channel 13, so that the lubricating oil can be fully contacted with the rollers in the roller pockets 4, and good lubricating and heat dissipation effects are achieved.
The bearing retainer adopts an alloy formula which comprises the following components in percentage by mass:
65-75 parts of carbon
30-50 parts of silicon
2.4 to 3.6 portions of manganese
2-5 parts of chromium
10-12 parts of cerium
Rhenium 3-4 parts
Copper 120-
45-55 parts of vanadium
3.3 to 3.5 portions of nickel
10 to 12 portions of sulfur
32 to 35 portions of phosphorus
The balance being iron.
Wherein, the formula of the wear-resistant layer is as follows:
60-61 parts of titanium powder
20-21 parts of graphite
The balance being nickel powder.
In addition, the wear-resistant layer also comprises shellac and absolute ethyl alcohol, and the weight ratio of the shellac to the mixed powder of the titanium powder, the graphite and the nickel powder is as follows: 1: (0.15-0.2).
In addition, the preparation of the wear-resistant layer comprises the following steps:
1: surface pretreatment of a bearing retainer: removing an oxide layer, oil stain and rust on the surface of the bearing retainer, and carrying out shot blasting texturing treatment on the surface of the bearing retainer until the surface roughness is Ra3.2-Ra6.3 to obtain a matrix to be coated with a wear-resistant layer;
2: preparing mixed powder: respectively drying titanium powder, graphite and nickel powder at 110-150 ℃ to remove moisture, and then putting the titanium powder, the graphite and the nickel powder into a mixer to be uniformly mixed to obtain mixed powder;
3: preparing a coating material: mixing the mixed powder in the step 2 with shellac, and then adding absolute ethyl alcohol to prepare paste to obtain a coating material;
4: presetting: coating the coating material on the surface of a base body of the bearing retainer to form a pre-coating layer, and grinding the pre-coating layer into a coating to be clad with the thickness of 0.5 +/-0.02 mm after the pre-coating layer is dried and solidified;
5: laser scanning: carrying out laser scanning on the coating to be clad, wherein a rectangle is used during the laser scanningLight spot, continuous output, laser power density 120-150W/mm2The scanning speed is 600-800 mm/min, and the lap joint rate is 5-10%; after scanning is finished, a composite wear-resistant layer is obtained on the surface of the base body of the bearing retainer;
6: and (3) post-treatment: and (3) grinding and polishing the base body of the bearing retainer with the composite wear-resistant layer on the surface by using a grinding wheel, and removing the surface oxide layer.
Example two
The bearing retainer adopts an alloy formula which comprises the following components in percentage by mass:
65 portions of carbon
Silicon 30 parts
Manganese 2.4 parts
2 portions of chromium
10 portions of cerium
Rhenium 3 parts
120 portions of copper
45 parts of vanadium
3.3 parts of nickel
Sulfur 10 parts
32 parts of phosphorus
The balance being iron.
Wherein, the formula of the wear-resistant layer is as follows:
60 portions of titanium powder
20 parts of graphite
The balance being nickel powder.
In addition, the wear-resistant layer also comprises shellac and absolute ethyl alcohol, and the weight ratio of the shellac to the mixed powder of the titanium powder, the graphite and the nickel powder is as follows: 1: 0.15.
EXAMPLE III
The bearing retainer adopts an alloy formula which comprises the following components in percentage by mass:
75 portions of carbon
50 portions of silicon
3.6 parts of manganese
5 portions of chromium
12 portions of cerium
Rhenium 4 parts
130 portions of copper
55 portions of vanadium
3.5 parts of nickel
12 portions of sulfur
35 portions of phosphorus
The balance being iron.
Wherein, the formula of the wear-resistant layer is as follows:
61 parts of titanium powder
21 parts of graphite
The balance being nickel powder.
In addition, the wear-resistant layer also comprises shellac and absolute ethyl alcohol, and the weight ratio of the shellac to the mixed powder of the titanium powder, the graphite and the nickel powder is as follows: 1: 0.2.
example four
The bearing retainer adopts an alloy formula which comprises the following components in percentage by mass:
68 portions of carbon
Silicon 40 parts
3.0 parts of manganese
Chromium 3 parts
11 parts of cerium
Rhenium 3.5 parts
125 portions of copper
50 portions of vanadium
3.4 parts of nickel
11 portions of sulfur
Phosphorus 33 parts
The balance being iron.
Wherein, the formula of the wear-resistant layer is as follows:
titanium powder 60.5 parts
20.5 parts of graphite
The balance being nickel powder.
In addition, the wear-resistant layer also comprises shellac and absolute ethyl alcohol, and the weight ratio of the shellac to the mixed powder of the titanium powder, the graphite and the nickel powder is as follows: 1: 0.17.
the foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.

Claims (1)

1. A preparation method of a bearing retainer for a robot with a cooling and wear-resisting structure is characterized by comprising the following steps: the roller cage comprises a first cage body (1), a second cage body (2) and a group of inner hexagonal countersunk head screws (3), wherein the first cage body (1) and the second cage body (2) are connected through the group of inner hexagonal countersunk head screws (3), a group of roller pocket holes (4) are formed in the first cage body (1) and the second cage body (2), a first boss (5) is arranged on the end face, close to the second cage body (2), of the first cage body (1), a group of pawls (6) are arranged on the outer wall of the first boss (5), a first groove (7) is formed in one end, close to the first cage body (1), of the second cage body (2), a group of wedge grooves (8) are formed in the inner wall of the first groove (7), the first boss (5) is arranged in the first groove (7), and the group of pawls (6) is clamped in the group of wedge grooves (8), the roller pockets (4) on the first retainer body (1) and the roller pockets (4) on the second retainer body (2) are arranged in a staggered mode;
a second boss (9) is arranged between the first retainer body (1) and the first boss (5), the diameter of the second boss (9) is larger than the diameters of the first boss (5) and the first groove (7), the diameter of the second boss (9) is smaller than the diameter of the first retainer body (1), and the first retainer body (1), the second retainer body (2) and the second boss (9) form a circular groove (10);
a group of first passages (11) are arranged on the first retainer body (1), the first passages (11) are arranged along the axial direction of the first retainer body (1), the first passages (11) are communicated with the grooves (10), a group of first oil holes (12) are arranged on two sides of the first passages (11), one ends of the group of first oil holes (12) are communicated with the first passages (11), and the other ends of the group of first oil holes (12) are communicated with the roller pocket holes (4);
a group of second passages (13) are arranged on the second retainer body (2), the second passages (13) are arranged along the axial direction of the second retainer body (2), the second passages (13) are communicated with the grooves (10), a group of oil holes II (14) are arranged on two sides of the second passages (13), one ends of the group of oil holes II (14) are communicated with the second passages (13), and the other ends of the group of oil holes II (14) are communicated with the roller pocket (4);
a group of first through holes (15) are formed in the first retainer body (1) in an annular array mode along the axial direction, a group of threaded holes (16) are formed in the second retainer body (2) in an annular array mode along the axial direction, the threaded holes (16) and the first through holes (15) are arranged in a one-to-one mode, and the threaded holes (16) and the first through holes (15) are connected through hexagon socket head countersunk head screws (3);
the first retainer body (1) and the second retainer body (2) are made of No. 10 steel plates, the inner wall of the roller pocket (4) is in a concave arc shape, and the surfaces of the first retainer body (1) and the second retainer body (2) are coated with wear-resistant layers;
the bearing retainer adopts an alloy formula which comprises the following components in percentage by mass:
65-75 parts of carbon
30-50 parts of silicon
2.4 to 3.6 portions of manganese
2-5 parts of chromium
10-12 parts of cerium
Rhenium 3-4 parts
Copper 120-
45-55 parts of vanadium
3.3 to 3.5 portions of nickel
10 to 12 portions of sulfur
32 to 35 portions of phosphorus
The balance being iron;
the formula of the wear-resistant layer is as follows:
60-61 parts of titanium powder
20-21 parts of graphite
The balance of nickel powder;
the wear-resistant layer also comprises shellac and absolute ethyl alcohol, and the weight ratio of the shellac to the mixed powder of the titanium powder, the graphite and the nickel powder is as follows: 1: (0.15-0.2);
the preparation of the wear-resistant layer comprises the following steps:
1: surface pretreatment of a bearing retainer: removing an oxide layer, oil stain and rust on the surface of the bearing retainer, and carrying out shot blasting texturing treatment on the surface of the bearing retainer until the surface roughness is Ra3.2-Ra6.3 to obtain a matrix to be coated with a wear-resistant layer;
2: preparing mixed powder: respectively drying titanium powder, graphite and nickel powder at 110-150 ℃ to remove moisture, and then putting the titanium powder, the graphite and the nickel powder into a mixer to be uniformly mixed to obtain mixed powder;
3: preparing a coating material: mixing the mixed powder in the step 2 with shellac, and then adding absolute ethyl alcohol to prepare paste to obtain a coating material;
4: presetting: coating the coating material on the surface of a base body of the bearing retainer to form a pre-coating layer, and grinding the pre-coating layer into a coating to be clad with the thickness of 0.5 +/-0.02 mm after the pre-coating layer is dried and solidified;
5: laser scanning: carrying out laser scanning on the coating to be clad, wherein a rectangular light spot is used during laser scanning, the laser is continuously output, and the laser power density is 120-150W/mm2The scanning speed is 600-800 mm/min, and the lap joint rate is 5-10%; after scanning is finished, a composite wear-resistant layer is obtained on the surface of the base body of the bearing retainer;
6: and (3) post-treatment: and (3) grinding and polishing the base body of the bearing retainer with the composite wear-resistant layer on the surface by using a grinding wheel, and removing the surface oxide layer.
CN201911125696.XA 2019-11-18 2019-11-18 Preparation method of bearing retainer for robot with cooling and wear-resisting structure Active CN110848264B (en)

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JP2000055043A (en) * 1998-08-06 2000-02-22 Koyo Seiko Co Ltd Double row bearing
JP2003184888A (en) * 2001-12-17 2003-07-03 Nsk Ltd Roller bearing
JP2011133060A (en) * 2009-12-25 2011-07-07 Nsk Ltd Rolling bearing
CN103322057A (en) * 2012-03-21 2013-09-25 徐国利 Retainer used for cylindrical roller bearing
CN102748382B (en) * 2012-06-28 2015-03-11 江苏金源锻造股份有限公司 Roller bearing for supporting main shaft of wind driven generator
CN203412946U (en) * 2013-08-19 2014-01-29 大连光扬轴承制造有限公司 Self-aligning roller bearing retainer
CN205937502U (en) * 2016-08-12 2017-02-08 新昌县嘉阳轴承有限公司 Self -lubricating roller bearing
DE102017110095A1 (en) * 2017-05-10 2018-11-15 Schaeffler Technologies AG & Co. KG Cage for a double row roller bearing
CN110259831A (en) * 2019-06-28 2019-09-20 舍弗勒技术股份两合公司 Bearing, bearing ring and preparation method thereof

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