CN114183463A - Split type slewing bearing of double reducing outer lane - Google Patents

Split type slewing bearing of double reducing outer lane Download PDF

Info

Publication number
CN114183463A
CN114183463A CN202111507059.6A CN202111507059A CN114183463A CN 114183463 A CN114183463 A CN 114183463A CN 202111507059 A CN202111507059 A CN 202111507059A CN 114183463 A CN114183463 A CN 114183463A
Authority
CN
China
Prior art keywords
workpiece
ring
hole
turning
annular
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
Application number
CN202111507059.6A
Other languages
Chinese (zh)
Inventor
郭晶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Wanda Special Bearing Co Ltd
Original Assignee
Jiangsu Wanda Special Bearing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Wanda Special Bearing Co Ltd filed Critical Jiangsu Wanda Special Bearing Co Ltd
Priority to CN202111507059.6A priority Critical patent/CN114183463A/en
Publication of CN114183463A publication Critical patent/CN114183463A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/50—Other types of ball or roller bearings
    • F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
    • 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
    • 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
    • F16C33/58—Raceways; Race rings
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/581—Raceways; Race rings integral with other parts, e.g. with housings or machine elements such as shafts or gear wheels
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • 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
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • 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
    • F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
    • F16C33/6677—Details of supply of the liquid to the bearing, e.g. passages or nozzles from radial inside, e.g. via a passage through the shaft and/or inner ring
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7889—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to an inner race and extending toward the outer race
    • 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
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/10—Hardening, e.g. carburizing, carbo-nitriding
    • 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
    • F16C2223/10—Hardening, e.g. carburizing, carbo-nitriding
    • F16C2223/14—Hardening, e.g. carburizing, carbo-nitriding with nitriding
    • 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
    • F16C2223/10—Hardening, e.g. carburizing, carbo-nitriding
    • F16C2223/18—Hardening, e.g. carburizing, carbo-nitriding with induction hardening
    • 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
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/54—Surface roughness

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention relates to a double-row reducing outer ring split type slewing bearing which comprises an upper layer outer ring, a lower layer outer ring, first steel balls, second steel balls and an inner ring, wherein the inner ring is a circular ring, an annular boss protruding outwards is designed on the periphery of the lower end of the inner ring, the upper layer outer ring is designed on the outer side of the upper end of the inner ring, a plurality of first steel balls are arranged between a roller path on the inner side of the upper layer outer ring and a roller path on the outer side of the upper end of the inner ring, the lower layer outer ring is designed on the outer side of the annular boss of the inner ring, a plurality of second steel balls are arranged between the roller path on the inner side of the lower layer outer ring and the roller path on the outer side of the annular boss of the inner ring, an annular convex edge is designed on the lower end of the outer side of the upper layer outer ring, meshing teeth are designed on the periphery of the outer side of the lower layer outer ring. The steering mechanism has the advantages of being reasonable and ingenious in design and convenient to use, being designed into a mode that two layers of independent outer rings are combined with one inner ring, and being capable of achieving steering movement in multiple different directions at the same time.

Description

Split type slewing bearing of double reducing outer lane
Technical Field
The invention relates to the field of bearings, in particular to a split type slewing bearing with double rows of reducing outer rings.
Background
The slewing bearing is a novel mechanical part which gradually rises in the world in the last forty years and comprises an inner ring, an outer ring, a rolling body and the like, and the slewing bearing for the design production in China is mainly designed and manufactured by the Tianjin engineering mechanical research institute specified by the department of mechanical industry and introduced into the original design and manufacturing technology of the Federal Germany Rohe Erde company in the beginning of the 80 s. The standards of the ministry of mechanical industry of the people's republic of China were released in 1984 in 12 months and 20 days: JB/2300-84 pivoting support type, basic parameters and technical requirements, which is mainly responsible for drafting by Tianjin engineering machinery research institute of mechanical and electronic industry, Xuzhou hailin pivoting support factory, and later the country published the construction machinery standard in 1991: JB36.1-36.3-91, and new mechanical industry standards JB/2300-. The slewing bearing is a large bearing capable of bearing comprehensive loads and can simultaneously bear larger axial and radial loads and overturning moments.
The slewing bearing is generally used for realizing single steering movement in a slewing mechanism, and the conventional slewing bearing cannot meet the requirement of simultaneously realizing a plurality of steering movements in a complex use environment.
Aiming at the fact that multiple types of auxiliary facilities are added to a steering mechanism of a mobile robot used in special occasions, multiple steering motions in different directions need to be achieved at the same time, and according to the working condition characteristics, the double-layer reducing ball outer tooth type bidirectional slewing bearing designed by the inventor can meet the requirements of the working conditions.
Disclosure of Invention
In order to solve the technical problem, the invention provides a double-row reducing outer ring split type slewing bearing which is reasonable and ingenious in design and convenient to use, and can realize steering movement in multiple different directions at the same time.
The technical scheme of the invention is as follows:
the utility model provides a split type slewing bearing of double reducing outer lane, it includes upper outer lane, lower floor's outer lane, first steel ball, second steel ball and inner circle, the inner circle is that ring and lower extreme a week design have outside bellied annular boss, and upper outer lane design installs a plurality of first steel balls between the raceway in the inner circle upper end outside and upper outer lane inboard raceway and the inner circle upper end outside, and a plurality of second steel balls are installed in the annular boss outside of inner circle and between the raceway in the annular boss outside of the inboard raceway of lower floor's outer lane and inner circle in the lower outer lane design, upper outer lane outside lower extreme design has annular chimb, and annular chimb a week design has the meshing tooth, and lower floor's outer lane outside a week has also designed the meshing tooth.
An upper plunger hole is designed near the upper end of the inner ring, and a lower plunger hole is designed near the lower end of the inner ring; one end of the upper-layer plunger hole is communicated with the inner hole of the inner ring, and the other end of the upper-layer plunger hole is communicated with the roller path at the upper end outside the inner ring; one end of the lower plunger hole is communicated with the inner hole of the inner ring, and the other end of the lower plunger hole is communicated with the roller path on the outer side of the annular boss at the lower end of the outer side of the inner ring; the inner ring is also provided with a conical hole, the conical hole sequentially penetrates through the upper-layer plunger hole and the lower-layer plunger hole from top to bottom, the upper end of the conical hole is communicated with the upper end face of the inner ring, and the lower end of the conical hole is communicated with the lower end face of the inner ring; the plunger pin structure is characterized in that an upper plunger pin is installed in the upper plunger hole, a lower plunger pin is installed in the lower plunger hole, an upper conical hole is formed in the upper plunger pin, a lower conical hole is formed in the lower plunger pin, a conical pin is inserted into the conical hole, and the conical pin is inserted into the conical hole and penetrates through the upper conical hole of the upper plunger pin and the lower conical hole of the lower plunger pin.
The inner ring is provided with a vertical oil hole at a position close to the center in the axial direction, the upper end of the vertical oil hole is communicated with the upper end face of the inner ring, the inner ring is also provided with an upper transverse oil hole and a lower transverse oil hole respectively, one end of the upper transverse oil hole is communicated with the vertical oil hole and is close to the middle position, the other end of the upper transverse oil hole is communicated with a roller path outside the upper end of the inner ring, one end of the lower transverse oil hole is communicated with the lower end of the vertical oil hole, and the other end of the lower transverse oil hole is communicated with a roller path outside an annular boss at the lower end of the inner ring; and the upper port part of the vertical oil hole is also provided with a press-fit type pressure filling oil cup.
An outer annular step is designed on the outer side of the upper end of the inner ring in a circle, an inner annular step is designed on the inner side of the upper layer outer ring in a circle, the outer annular step and the inner annular step form an annular groove, and a dust cover is installed in the annular groove; an upper annular rectangular groove is designed at the root part of the lower end of the outer side of the circular ring of the inner ring, an upper sealing ring is arranged in the upper annular rectangular groove and comprises a rectangular ring and an inclined ring, the outer side of the rectangular ring is connected with the inclined ring, the inner side of the rectangular ring is arranged in the upper annular rectangular groove, and the inclined ring is obliquely pressed at the lower end of the upper outer ring; annular rectangular channel under the annular boss outside lower extreme design of inner circle, install the bottom seal circle in the annular rectangular channel down, the bottom seal circle includes rectangle form circle and oblique circle, and the rectangle form circle outside is connected with oblique circle, and rectangle form circle inboard is installed in annular rectangular channel down, and oblique circle slope is pressed the lower extreme at lower floor's outer lane.
A plurality of mounting holes are formed in the periphery of the annular convex edge in the axial direction; a plurality of mounting holes are also designed at the position close to the inner side of the circumference of the lower end of the inner ring.
The processing method of the upper layer outer ring comprises the following steps:
the method comprises the following steps: forging process
And (3) forging the round steel, wherein the round steel is forged into a ring-shaped workpiece by forging equipment and then is subjected to normalizing treatment to improve the cutting function.
Step two: waste block before tempering
Turning the annular workpiece on a numerical control lathe; turning two planes, an outer circle, an inner hole and inner and outer chamfers of the annular workpiece on a rough turning machine, wherein the turning parameters are that the linear speed is 40-50r/min, and the feed amount is as follows: roughly turning by 0.4-0.5mm/r, and finely turning by 0.3-0.4 mm/r; the roughness of the workpiece after turning is less than Ra6.3.
Step three: thermal refining
The quenching and tempering treatment is a double heat treatment method of quenching and high-temperature tempering; the quenching temperature is 820-870 ℃, and the high-temperature tempering is 500-650 ℃; the hardening and tempering hardness is HB 270-310.
Step four: finish turning ferrule
Processing two planes, an excircle, an L-shaped step, an inner hole, a raceway and chamfers at all positions on a workpiece by using a three-jaw chuck fixed numerical control lathe; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step five: roller path quenching
The raceway quenching uses a medium-frequency scanning quenching machine tool, the workpiece running speed is 137mm/min, and the processing frequency is 15 Hz; the process requirements are as follows: HRC Rockwell hardness is 55-62, Ds hardening layer is more than or equal to 2.2mm, no crack defect exists, and total length of soft belt is not more than 40 mm.
Step six: semi-hard vehicle L-shaped step
Fixing a workpiece on a numerical control lathe by using a three-jaw chuck to process an L-shaped step; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step seven: additional tempering
Putting the workpiece into a tempering furnace, and additionally tempering at 120-150 ℃; the heat preservation time is 3-4 h.
Step eight: hard car ferrule
Fixing a workpiece on a numerically controlled lathe by using a three-jaw chuck to process two plane and excircle L-shaped steps and a sealing groove; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step nine: machining mounting holes
Fixing a workpiece on a numerical control milling machine to process a mounting hole; the drilling and milling parameters are that the linear speed is 50-60r/min, the feed rate is: 0.16 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step ten: gear machining
And (3) milling teeth by adopting a disk-shaped module milling cutter or a finger-shaped milling cutter, wherein the shape of the section of each milling cutter tooth corresponds to the shape of each gear tooth.
Step eleven: car matching raceway
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is Ra1.0 or less.
Step twelve: phosphating treatment
Prevent the work piece working environment from being comparatively harsh, the easy corrosion is rusted, the surface is made the bonderizing.
The processing method of the lower layer outer ring
The method comprises the following steps: forging process
Forging round steel; the round steel is forged into a ring-shaped workpiece by forging equipment, and then the cutting function is improved by normalizing treatment.
Step two: waste block before tempering
Turning the annular workpiece on a numerical control lathe, and turning two planes, an outer circle, an inner hole and inner and outer chamfers of the annular workpiece; the turning parameters are that the linear speed is 40-50r/min, the feed rate: roughly turning by 0.4-0.5mm/r, and finely turning by 0.3-0.4 mm/r; the roughness of the workpiece after turning is less than Ra6.3.
Step three: thermal refining
The quenching and tempering treatment is a double heat treatment method of quenching and high-temperature tempering, wherein the quenching temperature is 820-870 ℃, and the high-temperature tempering is carried out at 500-650 ℃; the hardening and tempering hardness is HB 270-310.
Step four: rough turning ferrule
Fixing a workpiece on a numerically controlled lathe by using a three-jaw chuck to process two planes, an excircle, a step, an inner hole and a raceway; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step five: gear machining
And (3) milling teeth by adopting a disk-shaped module milling cutter or a finger-shaped milling cutter, wherein the shape of the section of each milling cutter tooth corresponds to the shape of each gear tooth.
Step six: two planes of polishing
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is Ra1.0 or less.
Step seven: finish turning raceway
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is Ra1.0 or less.
Step eight: nitriding treatment
Curing the workpiece in a nitriding furnace, sealing a furnace cover and heating, wherein air in the furnace is required to be removed before heating to 150 ℃; controlling the automatic temperature of a heating furnace at 150 ℃ and starting heating, removing air in the furnace to below 10%, raising the temperature of the furnace to a nitriding temperature, keeping the thickness required by nitriding for at least 4-10 hours, and keeping the treatment temperature at about 520 ℃; a hardened layer is formed on the surface of the workpiece through nitriding treatment, so that the hardness of the tooth surface is improved, the wear resistance of the tooth surface is enhanced, and the service life of the outer gear ring is prolonged.
Step nine: phosphating treatment
Prevent the work piece working environment from being comparatively harsh, the easy corrosion is rusted, the surface is made the bonderizing.
The processing method of the inner ring
The method comprises the following steps: forging process
Forging round steel; the round steel is forged into a ring-shaped workpiece by forging equipment, and then the cutting function is improved by normalizing treatment.
Step two: waste block before tempering
Placing the annular workpiece on a numerical control lathe to turn two planes, an excircle and an inner hole; the turning parameters are that the linear speed is 40-50r/min, the feed rate: roughly turning by 0.4-0.5mm/r, and finely turning by 0.3-0.4 mm/r; the roughness of the workpiece after turning is less than Ra6.3.
Step three: thermal refining
The quenching and tempering treatment is a double heat treatment method of quenching and high-temperature tempering; the quenching temperature is 820-870 ℃, and the high-temperature tempering is 500-650 ℃; the hardening and tempering hardness is HB 270-310.
Step four: processing plunger/taper pin hole
Fixing a workpiece on a rocker drill through tool clamping, drilling and reaming; drilling parameters are that the linear speed is 40-50r/min, the feed rate: 0.16 mm/r; the roughness of the workpiece after reaming is less than Ra1.6.
Step five: finish turning ferrule
Processing two planes, an excircle, an inner hole, two raceways and chamfers on a workpiece by using a three-jaw chuck fixed numerical control lathe; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step six: oil drilling hole
Fixing a workpiece on a rocker drill to process an oil hole; the drilling parameters are that the linear speed is 40-50r/min, the feed rate: 0.16 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step seven: roller path quenching
The raceway quenching uses a medium-frequency scanning quenching machine tool, the workpiece running speed is 137mm/min, and the processing frequency is 15 Hz; the process requirements are as follows: HRC Rockwell hardness 55-62, Ds hardening layer upper raceway Ds: 2.0-2.5mm, the lower rolling path Ds is more than or equal to 2.2mm, no crack defect exists, and the total length of the soft belt is not more than 40 mm.
Step eight: hard car ferrule
Fixing a workpiece on a numerical control lathe by using a three-jaw chuck to process two planes, inner holes, sealing grooves and chamfers; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step nine: machining mounting hole/oil cup hole
Fixing a workpiece on a numerical control milling machine to process a mounting hole; the drilling and milling parameters are that the linear speed is 50-60r/min, the feed rate is: 0.16 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step ten: hard car raceway
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is Ra1.0 or less.
Step eleven: phosphating treatment
Prevent the work piece working environment from being comparatively harsh, the easy corrosion is rusted, the surface is made the bonderizing.
The invention has the advantages that:
1. reasonable in design is ingenious, and convenient to use designs into two-layer independent outer lane and combines an inner circle mode, can realize the motion that turns to of a plurality of not equidirectional at the same time.
2. The steel ball is filled in a plunger hole mode, the efficiency is high, two plungers are fixed simultaneously through one taper pin, and the plunger type filling machine is safe, reliable and firm in fixation.
3. The purpose of the rough turning before tempering is to improve the shape precision of a blank workpiece and reduce the finishing allowance of the workpiece.
4. The quenching and tempering treatment is a double heat treatment method of quenching and high-temperature tempering, and aims to ensure that a workpiece has good comprehensive performance; and the hardening and tempering hardness HB270-310 is higher than the normal design standard, so that the tensile strength and the yield strength of the ferrule under the overturning moment are improved.
5. The quenching of the roller path ensures that the roller path bearing the load has a hardening layer with a certain depth to meet the requirements of working conditions.
6. The car matching raceway is used for calculating the diameter required to be processed by the upper layer outer ring raceway according to the play value of the upper layer bearing, then programming and processing are carried out to the calculated size, then assembly is carried out, and the precision (play and run-out) of a finished product is checked.
7. The nitriding treatment is to form a hardened layer on the surface of the workpiece through nitriding treatment, so that the hardness of the tooth surface is improved, the wear resistance of the tooth surface is enhanced, and the service life of the external gear ring is prolonged.
Drawings
FIG. 1 is a schematic of the present invention.
Fig. 2 is an enlarged schematic view of the left side of fig. 1.
Fig. 3 is an enlarged schematic view of the right side of fig. 1.
Fig. 4 is a top view of fig. 1.
Detailed Description
Referring to the attached drawings 1-4, a double-row reducing outer ring split type slewing bearing comprises an upper outer ring 1, a lower outer ring 2, first steel balls 3, second steel balls 4 and an inner ring 5, wherein the inner ring 5 is a circular ring, a circle of the lower end of the inner ring 5 is provided with an annular boss 51 protruding outwards, the upper outer ring 1 is designed to be provided with a plurality of first steel balls 3 between the outer side of the upper end of the inner ring 5 and the inner side of the upper outer ring 1, the lower outer ring 2 is designed to be provided with a plurality of second steel balls 4 between the outer side of the annular boss 51 of the inner ring 5 and the inner side of the lower outer ring 2 and the outer side of the annular boss 51 of the inner ring 5, the lower end of the outer side of the upper outer ring 1 is provided with an annular convex edge 11, a circle of the annular convex edge 11 is provided with meshing teeth 6, and a circle of the outer ring 2 is also provided with meshing teeth 6. And the distance between the upper layer outer ring and the lower layer outer ring is 5 mm.
As shown in fig. 2, the inner ring 5 is provided with an upper plunger hole 52 near the upper end, and the inner ring 5 is provided with a lower plunger hole 53 near the lower end; one end of the upper-layer plunger hole 52 is communicated with the inner hole of the inner ring 5, and the other end of the upper-layer plunger hole 52 is communicated with the roller path at the upper end of the outer side of the inner ring 5; one end of the lower plunger hole 53 is communicated with an inner hole of the inner ring 5, and the other end of the lower plunger hole 53 is communicated with a roller path on the outer side of the annular boss 51 at the lower end of the outer side of the inner ring 5; the inner ring 5 is also provided with a conical hole 54, the conical hole 54 sequentially penetrates through the upper-layer plunger hole 52 and the lower-layer plunger hole 53 from top to bottom, the upper end of the conical hole 54 is communicated with the upper end face of the inner ring 5, and the lower end of the conical hole 54 is communicated with the lower end face of the inner ring 5; an upper plunger pin 520 is installed in the upper plunger hole 52, a lower plunger pin 530 is installed in the lower plunger hole 53, an upper tapered hole is formed in the upper plunger pin 520, a lower tapered hole is formed in the lower plunger pin 530, a conical pin 540 is inserted into the conical hole 54, and the conical pin 540 is inserted into the conical hole 54 and penetrates through the upper tapered hole of the upper plunger pin 520 and the lower tapered hole of the lower plunger pin 530.
As shown in fig. 3, a vertical oil hole 55 is formed in the inner ring 5 at a position close to the center in the axial direction, the upper end of the vertical oil hole 55 is communicated with the upper end surface of the inner ring 5, the inner ring 5 is further provided with an upper transverse oil hole 56 and a lower transverse oil hole 57, one end of the upper transverse oil hole 56 is communicated with the vertical oil hole 55 at a position close to the middle, the other end of the upper transverse oil hole 56 is communicated with a raceway outside the upper end of the inner ring 5, one end of the lower transverse oil hole 57 is communicated with the lower end of the vertical oil hole 55, and the other end of the lower transverse oil hole 57 is communicated with a raceway outside an annular boss 51 at the lower end of the inner ring 5; and the upper port part of the vertical oil hole 55 is also provided with a press-fit type pressure filling oil cup.
As shown in fig. 2 and 3, an outer annular step is designed on the outer periphery of the upper end of the inner ring 5, an inner annular step is designed on the inner periphery of the upper layer outer ring 1, the outer annular step and the inner annular step form an annular groove, and a dust cover 7 is installed in the annular groove; an upper annular rectangular groove is designed at the root part of the lower end of the outer side of the circular ring of the inner ring 5, an upper sealing ring 8 is installed in the upper annular rectangular groove, the upper sealing ring 8 comprises a rectangular ring and an inclined ring, the outer side of the rectangular ring is connected with the inclined ring, the inner side of the rectangular ring is installed in the upper annular rectangular groove, and the inclined ring is obliquely pressed at the lower end of the upper layer outer ring 1; annular rectangular channel under the design of the annular boss 51 outside lower extreme of inner circle 5, install lower sealing washer 9 in the annular rectangular channel down, lower sealing washer 9 includes rectangle form circle and oblique circle, and the rectangle form circle outside is connected with oblique circle, and rectangle form circle inboard is installed in annular rectangular channel down, and oblique circle slope is pressed at the lower extreme of lower floor's outer lane 2.
As shown in fig. 1-3, a plurality of mounting holes 10 are designed on the circumference of the annular flange 11 in the axial direction; a plurality of mounting holes 10 are also designed at the position close to the inner side of the circumference of the lower end of the inner ring 5.
The processing method of the upper layer outer ring 1 comprises the following steps:
the method comprises the following steps: forging process
And (3) forging the round steel, wherein the round steel is forged into a ring-shaped workpiece by forging equipment and then is subjected to normalizing treatment to improve the cutting function.
Step two: waste block before tempering
Turning the annular workpiece on a numerical control lathe; turning two planes, an outer circle, an inner hole and inner and outer chamfers of the annular workpiece on a rough turning machine, wherein the turning parameters are that the linear speed is 40-50r/min, and the feed amount is as follows: roughly turning by 0.4-0.5mm/r, and finely turning by 0.3-0.4 mm/r; the roughness of the workpiece after turning is less than Ra6.3.
Step three: the hardening and tempering hardness is higher than the normal design standard, so that the tensile strength and the yield strength of the ferrule under the overturning moment are improved.
The quenching and tempering treatment is a double heat treatment method of quenching and high-temperature tempering, and aims to ensure that a workpiece has good comprehensive performance; the quenching temperature is 820-870 ℃, and the high-temperature tempering is 500-650 ℃; the hardening and tempering hardness is HB 270-310.
Step four: finish turning ferrule
Processing two planes, an excircle, an L-shaped step, an inner hole, a raceway and chamfers at all positions on a workpiece by using a three-jaw chuck fixed numerical control lathe; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step five: the quenching of the roller path ensures that the roller path bearing the load has a hardening layer with a certain depth to meet the requirements of working conditions.
The raceway quenching uses a medium-frequency scanning quenching machine tool, the workpiece running speed is 137mm/min, and the processing frequency is 15 Hz; the process requirements are as follows: HRC Rockwell hardness is 55-62, Ds hardening layer is more than or equal to 2.2mm, no crack defect exists, and total length of soft belt is not more than 40 mm.
Step six: semi-hard vehicle L-shaped step
Fixing a workpiece on a numerical control lathe by using a three-jaw chuck to process an L-shaped step; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step seven: additional tempering
Putting the workpiece into a tempering furnace, and additionally tempering at 120-150 ℃; the heat preservation time is 3-4 h.
Step eight: hard car ferrule
Fixing a workpiece on a numerically controlled lathe by using a three-jaw chuck to process two plane and excircle L-shaped steps and a sealing groove; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step nine: machining mounting holes
Fixing a workpiece on a numerical control milling machine to process a mounting hole; the drilling and milling parameters are that the linear speed is 50-60r/min, the feed rate is: 0.16 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step ten: gear machining
And (3) milling teeth by adopting a disk-shaped module milling cutter or a finger-shaped milling cutter, wherein the shape of the section of each milling cutter tooth corresponds to the shape of each gear tooth.
Step eleven: the diameter of the upper layer outer ring 1 raceway required to be processed is calculated according to the play value of the upper layer bearing by the car matching raceway, and then the car matching raceway is programmed and processed to the calculated size, then the car matching raceway is assembled, and the precision (play and run-out) of a finished product is checked.
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is Ra1.0 or less.
Step twelve: phosphating treatment
The work piece is prevented from being in a severe working environment, being easy to corrode and rust, and the surface of the work piece is subjected to phosphating treatment; comprises five basic steps of oil removal and rust prevention, water washing, phosphating, water washing and phosphating post-treatment.
The processing method of the lower layer outer ring 2
The method comprises the following steps: forging process
Forging round steel; the round steel is forged into a ring-shaped workpiece by forging equipment, and then the cutting function is improved by normalizing treatment.
Step two: the purpose of the rough turning before tempering is to improve the shape precision of a blank workpiece and reduce the finishing allowance of the workpiece.
Placing the annular workpiece on a numerical control lathe for turning two planes, an excircle, an inner hole and inner and outer chamfers of the annular workpiece; the turning parameters are that the linear speed is 40-50r/min, the feed rate: roughly turning by 0.4-0.5mm/r, and finely turning by 0.3-0.4 mm/r; the roughness of the workpiece after turning is less than Ra6.3.
Step three: the hardening and tempering hardness is higher than the normal design standard, so that the tensile strength and the yield strength of the ferrule under the overturning moment are improved.
The quenching and tempering treatment is a double heat treatment method of quenching and high-temperature tempering, and aims to ensure that a workpiece has good comprehensive performance; the quenching temperature is 820-870 ℃, and the high-temperature tempering is 500-650 ℃.
Step four: rough turning ferrule
Fixing a workpiece on a numerically controlled lathe by using a three-jaw chuck to process two planes, an excircle, a step, an inner hole and a raceway; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step five: gear machining
And (3) milling teeth by adopting a disk-shaped module milling cutter or a finger-shaped milling cutter, wherein the shape of the section of each milling cutter tooth corresponds to the shape of each gear tooth.
Step six: two planes of polishing
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is Ra1.0 or less.
Step seven: finish turning raceway
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is Ra1.0 or less.
Step eight: the nitriding treatment forms a hardened layer on the surface of the workpiece through nitriding treatment, so that the hardness of the tooth surface is improved, the wear resistance of the tooth surface is enhanced, and the service life of the outer gear ring is prolonged.
Curing the workpiece in a nitriding furnace, sealing a furnace cover and heating, wherein air in the furnace is required to be removed before heating to 150 ℃; controlling the automatic temperature of the heating furnace at 150 ℃ and starting heating, removing air in the furnace to below 10%, raising the furnace temperature to the nitriding temperature, keeping the thickness required by nitriding for at least 4-10 hours, and keeping the treatment temperature at about 520 ℃.
Step nine: phosphating treatment
The work piece is prevented from being in a severe working environment, being easy to corrode and rust, and the surface of the work piece is subjected to phosphating treatment; comprises five basic steps of oil removal and rust prevention, water washing, phosphating, water washing and phosphating post-treatment.
The processing method of the inner ring 5
The method comprises the following steps: forging process
Forging round steel; the round steel is forged into a ring-shaped workpiece by forging equipment, and then the cutting function is improved by normalizing treatment.
Step two: waste block before tempering
Placing the annular workpiece on a numerical control lathe to turn two planes, an excircle and an inner hole; the turning parameters are that the linear speed is 40-50r/min, the feed rate: roughly turning by 0.4-0.5mm/r, and finely turning by 0.3-0.4 mm/r; the roughness of the workpiece after turning is less than Ra6.3.
Step three: the hardening and tempering hardness is higher than the normal design standard, so that the tensile strength and the yield strength of the ferrule under the overturning moment are improved.
The quenching and tempering treatment is a double heat treatment method of quenching and high-temperature tempering, and aims to ensure that a workpiece has good comprehensive performance; the quenching temperature is 820-870 ℃, and the high-temperature tempering is 500-650 ℃.
Step four: processing plunger/taper pin hole
Fixing a workpiece on a rocker drill through tool clamping, drilling and reaming; drilling parameters are that the linear speed is 40-50r/min, the feed rate: 0.16 mm/r; the roughness of the workpiece after reaming is less than Ra1.6.
Step five: finish turning ferrule
Processing two planes, an excircle, an inner hole, two raceways and chamfers on a workpiece by using a three-jaw chuck fixed numerical control lathe; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step six: oil drilling hole
Fixing a workpiece on a rocker drill to process an oil hole; the drilling parameters are that the linear speed is 40-50r/min, the feed rate: 0.16 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step seven: the quenching of the roller path ensures that the roller path bearing the load has a hardening layer with a certain depth to meet the requirements of working conditions.
The raceway quenching uses a medium-frequency scanning quenching machine tool, the workpiece running speed is 137mm/min, and the processing frequency is 15 Hz; the process requirements are as follows: HRC Rockwell hardness 55-62, Ds hardening layer upper raceway Ds: 2.0-2.5mm, the lower rolling path Ds is more than or equal to 2.2mm, no crack defect exists, and the total length of the soft belt is not more than 40 mm.
Step eight: hard car ferrule
Fixing a workpiece on a numerical control lathe by using a three-jaw chuck to process two planes, inner holes, sealing grooves and chamfers; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step nine: machining mounting hole/oil cup hole
Fixing a workpiece on a numerical control milling machine to process a mounting hole; the drilling and milling parameters are that the linear speed is 50-60r/min, the feed rate is: 0.16 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2.
Step ten: hard car raceway
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is Ra1.0 or less.
Step eleven: phosphating treatment
The work piece is prevented from being in a severe working environment, being easy to corrode and rust, and the surface of the work piece is subjected to phosphating treatment; comprises five basic steps of oil removal and rust prevention, water washing, phosphating, water washing and phosphating post-treatment.

Claims (8)

1. A double-row reducing outer ring split type slewing bearing is characterized by comprising an upper outer ring (1), a lower outer ring (2), first steel balls (3), second steel balls (4) and an inner ring (5), wherein the inner ring (5) is a circular ring, a circle of the lower end of the inner ring is provided with an annular boss (51) protruding outwards, the upper outer ring (1) is designed to be arranged between a raceway on the outer side of the upper end of the inner ring (5) and the inner side of the upper outer ring (1) and a raceway on the outer side of the upper end of the inner ring (5), the lower outer ring (2) is designed to be arranged on the outer side of the annular boss (51) of the inner ring (5), a plurality of second steel balls (4) are arranged between the raceway on the inner side of the lower outer ring (2) and the raceway on the outer side of the annular boss (51) of the inner ring (5), the lower end of the outer side of the upper outer ring (1) is provided with an annular convex edge (11), and a circle of the annular convex edge (11) is provided with meshing teeth (6), meshing teeth (6) are also designed on the outer periphery of the lower outer ring (2).
2. The split type slewing bearing with the double rows of reducing outer rings as claimed in claim 1, wherein the inner ring (5) is provided with an upper plunger hole (52) near the upper end, and the inner ring (5) is provided with a lower plunger hole (53) near the lower end; one end of the upper-layer plunger hole (52) is communicated with the inner hole of the inner ring (5), and the other end of the upper-layer plunger hole (52) is communicated with the roller path at the upper end of the outer side of the inner ring (5); one end of the lower plunger hole (53) is communicated with an inner hole of the inner ring (5), and the other end of the lower plunger hole (53) is communicated with a roller path on the outer side of the annular boss (51) at the lower end of the outer side of the inner ring (5); the inner ring (5) is also provided with a conical hole (54), the conical hole (54) sequentially penetrates through the upper-layer plunger hole (52) and the lower-layer plunger hole (53) from top to bottom, the upper end of the conical hole (54) is communicated with the upper end surface of the inner ring (5), and the lower end of the conical hole (54) is communicated with the lower end surface of the inner ring (5); an upper plunger pin (520) is installed in the upper plunger hole (52), a lower plunger pin (530) is installed in the lower plunger hole (53), an upper tapered hole is formed in the upper plunger pin (520), a lower tapered hole is formed in the lower plunger pin (530), a conical pin (540) is inserted into the conical hole (54), and the conical pin (540) is inserted into the conical hole (54) and penetrates through the upper tapered hole of the upper plunger pin (520) and the lower tapered hole of the lower plunger pin (530).
3. The double-row reducing outer ring split type slewing bearing is characterized in that a vertical oil hole (55) is formed in the position, close to the center, of the axial direction of the inner ring (5), the upper end of the vertical oil hole (55) is communicated with the upper end face of the inner ring (5), an upper transverse oil hole (56) and a lower transverse oil hole (57) are further formed in the inner ring (5), one end of the upper transverse oil hole (56) is communicated with the vertical oil hole (55) and is close to the middle position, the other end of the upper transverse oil hole (56) is communicated with a roller path on the outer side of the upper end of the inner ring (5), one end of the lower transverse oil hole (57) is communicated with the lower end of the vertical oil hole (55), and the other end of the lower transverse oil hole (57) is communicated with a roller path on the outer side of an annular boss (51) at the lower end of the inner ring (5); and the upper port part of the vertical oil hole (55) is also provided with a press-fit type pressure filling oil cup.
4. The double-row reducing outer ring split type slewing bearing according to claim 1, wherein an outer annular step is designed on the outer circumference of the upper end of the inner ring (5), an inner annular step is designed on the inner circumference of the upper outer ring (1), the outer annular step and the inner annular step form an annular groove, and a dust cover (7) is installed in the annular groove; an upper annular rectangular groove is designed at the root part of the lower end of the outer side of the circular ring of the inner ring (5), an upper sealing ring (8) is installed in the upper annular rectangular groove, the upper sealing ring (8) comprises a rectangular ring and an inclined ring, the outer side of the rectangular ring is connected with the inclined ring, the inner side of the rectangular ring is installed in the upper annular rectangular groove, and the inclined ring is obliquely pressed at the lower end of the upper outer ring (1); the lower end of the outer side of an annular boss (51) of the inner ring (5) is provided with a lower annular rectangular groove, a lower sealing ring (9) is installed in the lower annular rectangular groove, the lower sealing ring (9) comprises a rectangular ring and an inclined ring, the outer side of the rectangular ring is connected with the inclined ring, the inner side of the rectangular ring is installed in the lower annular rectangular groove, and the inclined ring is obliquely pressed at the lower end of the lower-layer outer ring (2).
5. The double-row reducing outer ring split type slewing bearing as claimed in claim 1, wherein a plurality of mounting holes (10) are designed around the annular flange (11) in the axial direction; a plurality of mounting holes (10) are also designed at the position close to the inner side of the circumference of the lower end of the inner ring (5).
6. The split type slewing bearing with the double rows of the reducing outer rings as claimed in claim 1, wherein the processing method of the upper outer ring is as follows:
the method comprises the following steps: forging process
Forging the round steel, forging the round steel into a ring-shaped workpiece by using forging equipment, and then normalizing;
step two: waste block before tempering
Turning the annular workpiece on a numerical control lathe; turning two planes, an outer circle, an inner hole and inner and outer chamfers of the annular workpiece on a rough turning machine, wherein the turning parameters are that the linear speed is 40-50r/min, and the feed amount is as follows: roughly turning by 0.4-0.5mm/r, and finely turning by 0.3-0.4 mm/r; the roughness of the turned workpiece is less than Ra6.3;
step three: the thermal refining is a double thermal treatment method of quenching and high-temperature tempering; the quenching temperature is 820-870 ℃, and the high-temperature tempering is 500-650 ℃; hardening and tempering hardness HB 270-310;
step four: finish turning ferrule
Processing two planes, an excircle, an L-shaped step, an inner hole, a raceway and chamfers at all positions on a workpiece by using a three-jaw chuck fixed numerical control lathe; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2;
step five: roller path quenching
The raceway quenching uses a medium-frequency scanning quenching machine tool, the workpiece running speed is 137mm/min, and the processing frequency is 15 Hz; the process requirements are as follows: HRC Rockwell hardness is 55-62, Ds hardening layer is more than or equal to 2.2mm, no crack defect exists, and total length of soft belt is not more than 40 mm;
step six: semi-hard vehicle L-shaped step
Fixing a workpiece on a numerical control lathe by using a three-jaw chuck to process an L-shaped step; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2;
step seven: additional tempering
Putting the workpiece into a tempering furnace, and additionally tempering at 120-150 ℃; the heat preservation time is 3-4 h;
step eight: hard car ferrule
Fixing a workpiece on a numerically controlled lathe by using a three-jaw chuck to process two plane and excircle L-shaped steps and a sealing groove; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2;
step nine: machining mounting holes
Fixing a workpiece on a numerical control milling machine to process a mounting hole; the drilling and milling parameters are that the linear speed is 50-60r/min, the feed rate is: 0.16 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2;
step ten: gear machining
Adopting a disk-shaped module milling cutter or a finger-shaped milling cutter to mill teeth, wherein the shape of the section of each milling cutter tooth corresponds to the shape of each gear tooth;
step eleven: car matching raceway
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is less than Ra1.0;
step twelve: phosphating treatment
Prevent the work piece working environment from being comparatively harsh, the easy corrosion is rusted, the surface is made the bonderizing.
7. The split type slewing bearing with double rows of reducing outer rings as claimed in claim 1, wherein the method for processing the lower outer ring,
the method comprises the following steps: forging process
Forging round steel; forging the round steel into a ring-shaped workpiece by using forging equipment and then normalizing;
step two: waste block before tempering
Placing the annular workpiece on a numerical control lathe for turning two planes, excircles, inner holes and inner and outer chamfers of the annular workpiece, wherein the turning parameters are linear speed of 40-50r/min and feed amount: roughly turning by 0.4-0.5mm/r, and finely turning by 0.3-0.4 mm/r; the roughness of the turned workpiece is less than Ra6.3;
step three: thermal refining
The quenching and tempering treatment is a double heat treatment method of quenching and high-temperature tempering; the quenching temperature is 820-870 ℃, and the high-temperature tempering is 500-650 ℃; hardening and tempering hardness HB 270-310;
step four: rough turning ferrule
Fixing a workpiece on a numerically controlled lathe by using a three-jaw chuck to process two planes, an excircle, a step, an inner hole and a raceway; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2;
step five: gear machining
Adopting a disk-shaped module milling cutter or a finger-shaped milling cutter to mill teeth, wherein the shape of the section of each milling cutter tooth corresponds to the shape of each gear tooth;
step six: two planes of polishing
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is less than Ra1.0;
step seven: finish turning raceway
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is less than Ra1.0;
step eight: nitriding treatment
Curing the workpiece in a nitriding furnace, sealing a furnace cover and heating, wherein air in the furnace is required to be removed before heating to 150 ℃; controlling the automatic temperature of a heating furnace at 150 ℃ and starting heating, removing air in the furnace to below 10%, raising the temperature of the furnace to a nitriding temperature, keeping the thickness required by nitriding for at least 4-10 hours, and keeping the treatment temperature at about 520 ℃; nitriding to form a hardened layer on the surface of the workpiece;
step nine: phosphating treatment
Prevent the work piece working environment from being comparatively harsh, the easy corrosion is rusted, the surface is made the bonderizing.
8. The split type slewing bearing with double rows of reducing outer rings as claimed in claim 1, wherein the processing method of the inner ring,
the method comprises the following steps: forging process
Forging round steel; forging the round steel into a ring-shaped workpiece by using forging equipment and then normalizing;
step two: waste block before tempering
Placing the annular workpiece on a numerical control lathe to turn two planes, an excircle and an inner hole; the turning parameters are that the linear speed is 40-50r/min, the feed rate: roughly turning by 0.4-0.5mm/r, and finely turning by 0.3-0.4 mm/r; the roughness of the turned workpiece is less than Ra6.3;
step three: thermal refining
The quenching and tempering treatment is a double heat treatment method of quenching and high-temperature tempering; the quenching temperature is 820-870 ℃, and the high-temperature tempering is 500-650 ℃; hardening and tempering hardness HB 270-310;
step four: processing plunger/taper pin hole
Fixing a workpiece on a rocker drill through tool clamping, drilling and reaming; drilling parameters are that the linear speed is 40-50r/min, the feed rate: 0.16 mm/r; the roughness of the workpiece after reaming is less than Ra1.6
Step five: finish turning ferrule
Processing two planes, an excircle, an inner hole, two raceways and chamfers on a workpiece by using a three-jaw chuck fixed numerical control lathe; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2;
step six: oil drilling hole
Fixing a workpiece on a rocker drill to process an oil hole; the drilling parameters are that the linear speed is 40-50r/min, the feed rate: 0.16 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2;
step seven: roller path quenching
The raceway quenching uses a medium-frequency scanning quenching machine tool, the workpiece running speed is 137mm/min, and the processing frequency is 15 Hz; the process requirements are as follows: HRC Rockwell hardness 55-62, Ds hardening layer upper raceway Ds: 2.0-2.5mm, the lower rolling path Ds is more than or equal to 2.2mm, no crack defect exists, and the total length of the soft belt is not more than 40 mm;
step eight: hard car ferrule
Fixing a workpiece on a numerical control lathe by using a three-jaw chuck to process two planes, inner holes, sealing grooves and chamfers; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.20 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2;
step nine: machining mounting hole/oil cup hole
Fixing a workpiece on a numerical control milling machine to process a mounting hole; the drilling and milling parameters are that the linear speed is 50-60r/min, the feed rate is: 0.16 mm/r; the roughness of the workpiece after finish turning is less than Ra3.2;
step ten: hard car raceway
Fixing the workpiece on a numerical control vertical lathe for processing; the turning parameters are that the linear speed is 40-50r/min, the feed rate: 0.10 mm/r; the roughness of the workpiece after finish turning is less than Ra1.0;
step eleven: phosphating treatment
Prevent the work piece working environment from being comparatively harsh, the easy corrosion is rusted, the surface is made the bonderizing.
CN202111507059.6A 2021-12-10 2021-12-10 Split type slewing bearing of double reducing outer lane Pending CN114183463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111507059.6A CN114183463A (en) 2021-12-10 2021-12-10 Split type slewing bearing of double reducing outer lane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111507059.6A CN114183463A (en) 2021-12-10 2021-12-10 Split type slewing bearing of double reducing outer lane

Publications (1)

Publication Number Publication Date
CN114183463A true CN114183463A (en) 2022-03-15

Family

ID=80543090

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111507059.6A Pending CN114183463A (en) 2021-12-10 2021-12-10 Split type slewing bearing of double reducing outer lane

Country Status (1)

Country Link
CN (1) CN114183463A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202170927U (en) * 2011-01-22 2012-03-21 安徽枞晨回转支承有限公司 Two-roller reducing ball type slewing bearing
CN103939479A (en) * 2014-04-18 2014-07-23 洛阳轴研科技股份有限公司 Slewing bearing with flange
CN203756729U (en) * 2013-09-19 2014-08-06 安徽省宣城市乾坤回转支承有限公司 Inner-ring and outer-tooth double-row ball slewing bearing
CN104972276A (en) * 2015-06-29 2015-10-14 如皋市非标轴承有限公司 Process for processing inner ring and outer ring of wind power bearing
CN205371296U (en) * 2015-12-29 2016-07-06 瓦房店瑞昌轴承制造有限公司 Outer tooth -like double reducing ball formula slewing bearing
CN211574027U (en) * 2019-12-27 2020-09-25 江苏双正机械有限公司 Double-rotation inner ring and outer tooth slewing bearing for blockage removing machine
CN112032193A (en) * 2020-09-29 2020-12-04 江苏万达特种轴承有限公司 Precision three-ring composite bearing and manufacturing method thereof
CN212250823U (en) * 2019-09-17 2020-12-29 徐州丰禾回转支承制造股份有限公司 Double-side toothed double-row ball type slewing bearing

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202170927U (en) * 2011-01-22 2012-03-21 安徽枞晨回转支承有限公司 Two-roller reducing ball type slewing bearing
CN203756729U (en) * 2013-09-19 2014-08-06 安徽省宣城市乾坤回转支承有限公司 Inner-ring and outer-tooth double-row ball slewing bearing
CN103939479A (en) * 2014-04-18 2014-07-23 洛阳轴研科技股份有限公司 Slewing bearing with flange
CN104972276A (en) * 2015-06-29 2015-10-14 如皋市非标轴承有限公司 Process for processing inner ring and outer ring of wind power bearing
CN205371296U (en) * 2015-12-29 2016-07-06 瓦房店瑞昌轴承制造有限公司 Outer tooth -like double reducing ball formula slewing bearing
CN212250823U (en) * 2019-09-17 2020-12-29 徐州丰禾回转支承制造股份有限公司 Double-side toothed double-row ball type slewing bearing
CN211574027U (en) * 2019-12-27 2020-09-25 江苏双正机械有限公司 Double-rotation inner ring and outer tooth slewing bearing for blockage removing machine
CN112032193A (en) * 2020-09-29 2020-12-04 江苏万达特种轴承有限公司 Precision three-ring composite bearing and manufacturing method thereof

Similar Documents

Publication Publication Date Title
CN102658461B (en) Axle gear ring tray machining process
CN103737270B (en) A kind of processing method of heavy bearing automobile main reducing gear power shaft
CN106670734B (en) A kind of processing method of worm-gear type pivoting support
CN104057266A (en) Slewing bearing quenching type inner gear ring processing technology
CN104565282B (en) Harmonic reducer and machining process thereof
CN106246705A (en) A kind of electric motor of automobile rotating shaft and processing method thereof
US20100058593A1 (en) Method of producing outer ring of self- alinging bearing
CN108644231A (en) A kind of deep groove ball bearing processing technology
CN111043178B (en) Universal joint outer ball cage and machining process
CN107116347A (en) A kind of processing technology of insertion axle
CN110355538A (en) The processing method of the planetary reduction gear ring gear of bio-robot
CN101725629A (en) Silicon nitride ceramic ball bearing and processing method thereof
CN110026751A (en) A kind of manufacturing method of bevel planet gear oil groove
CN205823959U (en) A kind of worm-gear type pivoting support of interior external tooth gyration in opposite directions
CN106870555A (en) A kind of novel steering waterproof sealing bearing and preparation method and application
CN106425335A (en) Milling method of large-size thin-wall bearing 45-degree inner and outer raceway surfaces
CN114183463A (en) Split type slewing bearing of double reducing outer lane
CN210566041U (en) High-precision transmission rotary drive
CN112065952B (en) Drum-shaped gear rail wheel for coal mining machine and preparation method thereof
CN110977357A (en) Bell-shaped shell for universal joint and processing technology
CN111660073A (en) Manufacturing method of transmission shaft
CN105972093B (en) A kind of worm-gear type pivoting support of the opposite rotary motion of interior external tooth
CN110977365A (en) Method for precisely machining inner gear of ultrahigh-strength stainless steel large gear ring
CN113751971A (en) Machining process of slewing bearing
CN111283389B (en) End face grinding process for wear-resisting disc of hydraulic motor

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