CN104723038A - Method for machining circular hole alloy steel cage with inner-and-outer double fore shafts - Google Patents
Method for machining circular hole alloy steel cage with inner-and-outer double fore shafts Download PDFInfo
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- CN104723038A CN104723038A CN201510128438.2A CN201510128438A CN104723038A CN 104723038 A CN104723038 A CN 104723038A CN 201510128438 A CN201510128438 A CN 201510128438A CN 104723038 A CN104723038 A CN 104723038A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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Abstract
The invention provides a method for machining a circular hole alloy steel cage with inner-and-outer double fore shafts, relates to a method for machining a bearing cage and aims at solving the problems that the surface roughness of a cage pocket is unqualified, the wear rate of a drill bit and a milling cutter is high, the machining precision of the cage pocket is low, the sizes of the pocket and the inner-and-outer double fore shafts of the pocket are not stable, the inner-and-outer locking angles are difficult to guarantee, and the cage can not be installed in an outer casing when assembled and contact balls are prone to falling off. The method comprises the steps of forming by lathing, thermal refining, finish lathing for a first surface, finish lathing for a second surface, coarse grinding for outer circle, finish lathing for inner circle, uniform grinding for first surface and second surface, printing, lathing for inner step and inner groove, drilling, hole milling, lathing for outer step, finish uniform grinding for first surface and second surface, chamfer lathing, deburring, polishing, washing, final inspection and silver plating.
Description
Technical field
The present invention relates to a kind of processing method of airframe bearing retainer.
Background technology
In order to improve the service life of Aero-Space bearing, three, 4 angular contact ball bearings are Application comparison a kind of bearings widely in recent years, this kind of bearing load carrying capacity is strong, can bear bidirectional axial force.Retainer is as one of the main building block of bearing, also more and more higher to the requirement of its structure.In assembling process, for making the bearing not easily sequence of sanqu songs within a particular musical mode, improve the reliability of bearing in installation process, and improve the service life of bearing, retainer adopts the frame mode that inside and outside twin-lock mouth is new.
But the conventional flowsheet of inside and outside twin-lock mouth retainer is: car is shaping → modifier treatment → thin car upper surface → thin car lower surface → corase grind cylindrical → thin boring → typewriting → car outer step → boring → bore hole → whole cylindrical grinding → whole boring → car in step and examining inside groove → car chamfering → deburring → cleaning → end → silver-plated → pack;
There is following shortcoming in this technological process:
1) inside and outside twin-lock mouth retainer conventional flowsheet is at brill, before bore hole operation, because bit force is uneven, therefore often there is drill bit tipping phenomenon by car outer step procedure arrangement;
2) cutter processing retainer pocket hole wears into type by hand by workman, and therefore during bore hole, tool wear is very fast, and sharpening frequency is high, and the wear rate of drill bit and milling cutter is high;
3) size of profile milling cutter then geometries directly affect the dimensionally stable of the inside and outside fore shaft of size and pocket hole in pocket hole, because the wear rate of milling cutter is high, thus the angle of the inside and outside locking angle be difficult to ensure;
4) pocket hole surface roughness is large, and do not reach technological requirement, product percent of pass is low, and production efficiency is low;
5) during step operation, there is Vehicle Processing chatter mark phenomenon at interior ledge surface around pocket hole, affect retainer presentation quality in car.Especially pocket depth difficulty when brill, bore hole controls, and deeply then occurs falling ball phenomenon after whole boring, shallow, and assembling fashionable dress does not enter overcoat, cannot ensure that the combination physical efficiency of retainer and full-size steel ball is easily by the minimum outer internal diameter size of outer ring.
Summary of the invention
The object of the invention is to solve that defective, drill bit, milling cutter the wear rate of retainer pocket hole surface roughness machining accuracy that is high, retainer pocket hole is low, pocket hole dimension and pocket hole inside and outside twin-lock mouth size unstable, inside and outside locking angle angle is difficult to ensure and assembling fashionable dress does not enter overcoat and falls the problem of ball, and a kind of processing method of inside and outside twin-lock mouth circular hole steel alloy retainer is provided.
The processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer of the present invention is carried out according to the following steps:
One, car is shaping: use carbide alloy inner diameter lathe tool alloy steel to carry out turning, obtain the steel alloy that internal diameter is 52.8mm ~ 53mm, then the external diameter of the steel alloy that carbide alloy external diameter lathe tool inner diameter turning is 52.8mm ~ 53mm is used, obtaining internal diameter is 52.8mm ~ 53mm, external diameter is the alloy pipe of 67.2mm ~ 67.4mm, re-using carbide alloy end face lathe tool inner diameter turning is 52.8mm ~ 53mm, external diameter is the end face of the alloy pipe of 67.2mm ~ 67.4mm, re-use cutoff tool to cut off, obtain the steel alloy retainer that shaping broadband is of a size of 16.3mm ~ 16.5mm,
Two, modifier treatment: the steel alloy retainer that the shaping broadband obtained step one is of a size of 16.3mm ~ 16.5mm carries out modifier treatment, described modifier treatment process is: first clean, then in vacuum oil quenching, Quenching Treatment 40min ~ 45min under temperature is 830 ~ 840 DEG C of conditions, clean after completing quenching, again in vacuum tempering furnace, temper 120min ~ 130min under temperature is 575 ~ 585 DEG C of conditions, obtains steel alloy retainer after modifier treatment;
Three, finish turning upper surface: after the modifier treatment adopting engine lathe to obtain step 2, finish turning is carried out in the upper surface of steel alloy retainer, obtains the steel alloy retainer that width is 15.7mm ~ 15.8mm, flatness is 0.03mm;
Four, finish turning lower surface: adopt engine lathe to the width that step 3 obtains be 15.7mm ~ 15.8mm, flatness is that finish turning is carried out in the lower surface of the steel alloy retainer of 0.03mm, obtains the steel alloy retainer that width is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is 0.06mm;
Five, cylindrical is roughly ground: adopt centreless grinding machine external to carry out grinding to the cylindrical that the width that step 4 obtains is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is the steel alloy retainer of 0.06mm, obtain the steel alloy retainer that outside dimension is 65.9mm ~ 66mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree are 0.06mm;
Six, finish turning inner circle: adopt engine lathe to the outside dimension that step 5 obtains be 65.9mm ~ 66mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree be that the inner circle of the steel alloy retainer of 0.06mm carries out turning, obtains the steel alloy retainer that internal diameter size is 53.9mm ~ 54mm, ovality 0.07mm, tapering 0.07mm, Wall-Thickness Difference 0.08mm, vertical difference 0.06mm;
Seven, all upper surface and lower surface is ground: employing M7475B surface grinding machine all grinds upper surface and the lower surface of the steel alloy retainer after step 6, and the planar dimension obtaining upper surface is 14.6mm ~ 14.8mm, the parallel error of upper surface is 0.02mm, the flatness of upper surface is 0.01mm, the planar dimension of lower surface is 14.6mm ~ 14.8mm, the parallel error of lower surface is 0.02mm, the flatness of lower surface is the steel alloy retainer of 0.01mm;
Eight, typewrite: adopt 62.5mm diametrical position place's marking that the planar dimension of forcing press in the upper surface that step 7 obtains is 14.6mm ~ 14.8mm, the parallel error of upper surface is 0.02mm, the flatness of upper surface is 0.01mm, the planar dimension of lower surface is 14.6mm ~ 14.8mm, the parallel error of lower surface is 0.02mm, the flatness of lower surface is the steel alloy retainer of 0.01mm, obtain the steel alloy retainer after marking;
Nine, step and inside groove in car: in the steel alloy retainer after the marking adopting numerically controlled lathe, digital control processing internal turning tool and digital control processing groove cutter to obtain step 8, step and inside groove carry out turning, turning to interior step is of a size of 57.2mm ~ 57.4mm, turning is 64mm ~ 64.2mm to inside groove, obtains the steel alloy retainer that interior step is of a size of 57.2mm ~ 57.4mm, inside groove is of a size of 64mm ~ 64.2mm;
Ten, bore, hole milling: first adopt alloy bit step 9 is obtained in step is of a size of 57.2mm ~ 57.4mm, inside groove is of a size of 64mm ~ 64.2mm steel alloy retainer pocket hole hole, obtaining aperture size is
the degree of depth is the pocket hole of 6mm, and then with alloy milling cutter, fore shaft in pocket hole and outer fore shaft are processed, obtain that pocket hole internal lock bicker degree is 30 °, fore shaft is of a size of 9.4mm in pocket hole, pocket hole external lock bicker degree is 60 °, fore shaft is of a size of 9.8+0.1mm outside pocket hole steel alloy retainer;
Cutting speed described in step 10 is 60m/min ~ 80m/min, and the amount of feeding is 40mm/min ~ 50mm/min;
11, car outer step: adopt engine lathe to cut the steel alloy retainer after step 10, obtain outer step broadband directly for 3.85mm ~ 3.95mm, ovality be 0.05mm, the steel alloy retainer of tapering to be 0.05mm and wall thickness be 0.07mm;
12, final all grind upper surface and lower surface: outer step broadband that step 11 obtains is directly 3.85mm ~ 3.95mm to adopt M7475B surface grinding machine all to grind, ovality is 0.05mm, upper surface and the lower surface of tapering to be 0.05mm and wall thickness the be steel alloy retainer of 0.07mm, the planar dimension obtaining upper surface is 14.7mm ~ 14.75mm, the parallel error of upper surface is 0.02mm, the flatness of upper surface is 0.01mm, the planar dimension of lower surface is 14.7mm ~ 14.75mm, the parallel error of lower surface is 0.02mm, the flatness of lower surface is the steel alloy retainer of 0.01mm,
13, car chamfering: adopt engine lathe to carry out car chamfering to the rib inner circle that the planar dimension of the upper surface that step 12 obtains is 14.7mm ~ 14.75mm, the parallel error of upper surface is 0.02mm, the flatness of upper surface is 0.01mm, the planar dimension of lower surface is 14.7mm ~ 14.75mm, the parallel error of lower surface is 0.02mm, the flatness of lower surface is the steel alloy retainer of 0.01mm, obtain the steel alloy retainer retainer that chamfer dimesion is 0.3X45;
14, deburring: use deburring cutter to remove the burr in step and pocket hole, obtain the steel alloy retainer not having acute angle and burr;
15: light is adornd: use light polishing machine light decorations 1.5h ~ 3h, obtain the steel alloy retainer of belt surface light;
16: cleaning: first use sour A to carry out pickling 3 times to the steel alloy retainer after step 15, then use sour B to carry out pickling 1 time;
Sour A described in step 10 six be by mass fraction be 25% ~ 30% nitric acid and mass fraction be 35% ~ 40% sulfuric acid be mixed with; In described sour A mass fraction be 25% ~ 30% nitric acid and mass fraction be the volume ratio of the sulfuric acid of 35% ~ 40% be (0.7 ~ 0.75): 1;
Sour B described in step 10 six to be mass fraction be 10% ~ 20% sulfuric acid;
17: inspection eventually: the steel alloy retainer eventually after inspection step 10 six, obtains the steel alloy retainer of surface cleaning, free from admixture and dirt;
18: silver-plated: carry out silver-plated to the steel alloy retainer after step 10 seven, obtain steel alloy retainer.
Advantage of the present invention:
1. because retainer material hardness of the present invention is higher, boring cutter or the reamer of the high speed steel material of former employing do not ensure technological requirement, through repeatedly studying and testing, the pocket hole now processing this retainer adopts digital controlled processing central machine tool, use the profile milling cutter of band coating to rough mill to process with finish-milling, the pocket hole inside and outside twin-lock mouth clamped one time of retainer is machined, decreases the process-cycle, improve production efficiency.
2. the size of profile milling cutter and the determination of geometry directly affect the working depth in retainer pocket hole and the size of inside and outside twin-lock mouth size, determine that can the assembly of full-size steel ball easily pass the minimum outer internal diameter size of outer ring, interior fore shaft 30 degree of angles in pocket hole are ensured by the top of profile milling cutter, outer fore shaft 60 degree of angles are ensured by the root of profile milling cutter, and the size in pocket hole reaches technological requirement by the programming on numerical control machining center.Center-diameter (chord length) control after pocket depth calculates with loading two finished product steel balls, ensures that the combination physical efficiency of retainer and full-size steel ball easily passes the minimum outer internal diameter size of outer ring.
3. △ d, d3 size of appropriate design profile milling cutter of the present invention, adopting this milling cutter to process retainer pocket hole is a kind of new processing method in production reality, and this cutter also can process other similar retainer pocket hole.By improving technique and cutter, have successfully completed the processing of this new construction mode of inside and outside twin-lock mouth circular hole steel alloy retainer, reach every physical dimension and the precision of technological requirement, improve the underproof problem of pocket hole surface roughness, effectively control the phenomenon of pocket hole dimension and pocket hole inside and outside twin-lock mouth size instability, inside and outside locking angle angle is difficult to ensure card, assembling fashionable dress do not enter overcoat, falls the situations such as ball and be all resolved.
4. the technique after improving is completed after brill, milling pocket hole operation by car outer step procedure arrangement, avoids drill bit tipping phenomenon.
5. due to cylindrical when brill, milling pocket hole not having step, make bit force even, therefore drill bit can not tipping.
6. in car, step procedure arrangement completed before brill, milling pocket hole operation, and because now turning is continuous turning, retainer uniform force, so the Vehicle Processing chatter mark eliminating on interior ledge surface.
7. bore, milling pocket hole procedure arrangement is after thin boring (finished product inner circle size), pocket depth is now easy to grasp, the pocket hole fore shaft size of machine-shaping is finished size, loading after two finished product steel balls can the size of direct-detection center-diameter, can ensure that full-size steel ball and retainer combine the minimum outer internal diameter size that physical efficiency easily passes outer ring, decrease brill simultaneously, allowance in hole milling operation, former processes allowance 3.4mm, existing processes allowance 2.4mm, decrease 29.41% altogether, greatly reduce drill bit, the wear rate of milling cutter, improve cutting-tool's used life.
8. the technique after improving adds all grinds two planes and finally all grinds two plane operations, and improve geometric accuracy and the dimensional accuracy of two planes to a certain extent, pocket hole phase mutual deviation is increased, and the position in pocket hole is more accurate.
Accompanying drawing explanation
Fig. 1 is the milling cutter construction schematic diagram for milling pocket hole in detailed description of the invention one; Wherein d is the diameter of milling cutter, and Δ d is the drop of pocket bore dia and outer fore shaft diameter, d
3for the outer fore shaft size of milling cutter;
Fig. 2 is the steel alloy retainer sectional view of detailed description of the invention one; Wherein d
4for minimum outer internal diameter size, 5 is pocket hole;
Fig. 3 is the steel alloy retainer sectional view of detailed description of the invention one; Wherein D is retainer pocket hole dimension, and A is typing position, and 1 is upper surface, and 2 is lower surface, and 3 is interior step, and 4 is outer step, and 5 is pocket hole;
Fig. 4 is the steel alloy retainer partial sectional view of detailed description of the invention one; Wherein d
1for fore shaft size outside pocket hole, d
2for fore shaft size in pocket hole, 5 is pocket hole.
Detailed description of the invention
Detailed description of the invention one: the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer of present embodiment is carried out according to the following steps:
One, car is shaping: use carbide alloy inner diameter lathe tool alloy steel to carry out turning, obtain the steel alloy that internal diameter is 52.8mm ~ 53mm, then the external diameter of the steel alloy that carbide alloy external diameter lathe tool inner diameter turning is 52.8mm ~ 53mm is used, obtaining internal diameter is 52.8mm ~ 53mm, external diameter is the alloy pipe of 67.2mm ~ 67.4mm, re-using carbide alloy end face lathe tool inner diameter turning is 52.8mm ~ 53mm, external diameter is the end face of the alloy pipe of 67.2mm ~ 67.4mm, re-use cutoff tool to cut off, obtain the steel alloy retainer that shaping broadband is of a size of 16.3mm ~ 16.5mm,
Two, modifier treatment: the steel alloy retainer that the shaping broadband obtained step one is of a size of 16.3mm ~ 16.5mm carries out modifier treatment, described modifier treatment process is: first clean, then in vacuum oil quenching, Quenching Treatment 40min ~ 45min under temperature is 830 ~ 840 DEG C of conditions, clean after completing quenching, again in vacuum tempering furnace, temper 120min ~ 130min under temperature is 575 ~ 585 DEG C of conditions, obtains steel alloy retainer after modifier treatment;
Three, finish turning upper surface 1: after the modifier treatment adopting engine lathe to obtain step 2, finish turning is carried out in the upper surface 1 of steel alloy retainer, obtains the steel alloy retainer that width is 15.7mm ~ 15.8mm, flatness is 0.03mm;
Four, finish turning lower surface 2: adopt engine lathe to the width that step 3 obtains be 15.7mm ~ 15.8mm, flatness is that finish turning is carried out in the lower surface 2 of the steel alloy retainer of 0.03mm, obtains the steel alloy retainer that width is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is 0.06mm;
Five, cylindrical is roughly ground: adopt centreless grinding machine external to carry out grinding to the cylindrical that the width that step 4 obtains is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is the steel alloy retainer of 0.06mm, obtain the steel alloy retainer that outside dimension is 65.9mm ~ 66mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree are 0.06mm;
Six, finish turning inner circle: adopt engine lathe to the outside dimension that step 5 obtains be 65.9mm ~ 66mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree be that the inner circle of the steel alloy retainer of 0.06mm carries out turning, obtains the steel alloy retainer that internal diameter size is 53.9mm ~ 54mm, ovality 0.07mm, tapering 0.07mm, Wall-Thickness Difference 0.08mm, vertical difference 0.06mm;
Seven, all upper surface 1 and lower surface 2 is ground: employing M7475B surface grinding machine all grinds upper surface 1 and the lower surface 2 of the steel alloy retainer after step 6, and the planar dimension obtaining upper surface 1 is 14.6mm ~ 14.8mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.6mm ~ 14.8mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm;
Eight, typewrite: adopt forcing press in 62.5mm diametrical position A place's marking that the planar dimension of the upper surface 1 that step 7 obtains is 14.6mm ~ 14.8mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.6mm ~ 14.8mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm, obtain the steel alloy retainer after marking;
Nine, step 3 and inside groove in car: in the steel alloy retainer after the marking adopting numerically controlled lathe, digital control processing internal turning tool and digital control processing groove cutter to obtain step 8, step 3 and inside groove carry out turning, turning to interior step is of a size of 57.2mm ~ 57.4mm, and turning obtains for 64mm ~ 64.2mm the steel alloy retainer that interior step 3 is of a size of 57.2mm ~ 57.4mm, inside groove is of a size of 64mm ~ 64.2mm to inside groove;
Ten, bore, hole milling: first adopt alloy bit step 9 is obtained in step 3 is of a size of 57.2mm ~ 57.4mm, inside groove is of a size of 64mm ~ 64.2mm steel alloy retainer pocket hole 5 hole, obtaining aperture size is
the degree of depth is the pocket hole 5 of 6mm, and then with alloy milling cutter, fore shaft in pocket hole 5 and outer fore shaft are processed, obtain that pocket hole 5 internal lock bicker degree is 30 °, fore shaft is of a size of 9.4mm in pocket hole 5, pocket hole 5 external lock bicker degree is 60 °, the outer fore shaft in pocket hole 5 is of a size of 9.8+0.1mm steel alloy retainer;
Cutting speed described in step 10 is 60m/min ~ 80m/min, and the amount of feeding is 40mm/min ~ 50mm/min;
In this step for the milling cutter construction schematic diagram in milling pocket hole 5 as shown in Figure 1; Wherein d is the diameter of milling cutter, and Δ d is the drop of pocket bore dia and outer fore shaft diameter, d
3represent the outer fore shaft size of milling cutter; 30 ° is the angles of fore shaft in milling cutter processing retainer, 60 ° be the outer fore shaft of milling cutter processing retainer angle they will determine to process the correctness of retainer pocket hole dimension, inside and outside fore shaft size;
In this step, the center-diameter (chord length) of pocket depth after loading two finished product steel balls calculating controls, and ensures that the combination physical efficiency of retainer and full-size steel ball easily passes the minimum outer internal diameter size d of outer ring
4(see Fig. 2);
11, car outer step 4: adopt engine lathe to cut the steel alloy retainer after step 10, obtain outer step 4 broadband directly for 3.85mm ~ 3.95mm, ovality be 0.05mm, the steel alloy retainer of tapering to be 0.05mm and wall thickness be 0.07mm;
12, final all grind upper surface 1 and lower surface 2: outer step 4 broadband that step 11 obtains is directly 3.85mm ~ 3.95mm to adopt M7475B surface grinding machine all to grind, ovality is 0.05mm, upper surface 1 and the lower surface 2 of tapering to be 0.05mm and wall thickness the be steel alloy retainer of 0.07mm, the planar dimension obtaining upper surface 1 is 14.7mm ~ 14.75mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.7mm ~ 14.75mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm,
13, car chamfering: adopt the rib inner circle that the planar dimension of engine lathe to the upper surface 1 that step 12 obtains is 14.7mm ~ 14.75mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.7mm ~ 14.75mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm to carry out car chamfering, obtain the steel alloy retainer retainer that chamfer dimesion is 0.3X45;
14, deburring: use deburring cutter to remove the burr in step and pocket hole, obtain the steel alloy retainer not having acute angle and burr;
15: light is adornd: use light polishing machine light decorations 1.5h ~ 3h, obtain the steel alloy retainer of belt surface light;
16: cleaning: first use sour A to carry out pickling 3 times to the steel alloy retainer after step 15, then use sour B to carry out pickling 1 time;
Sour A described in step 10 six be by mass fraction be 25% ~ 30% nitric acid and mass fraction be 35% ~ 40% sulfuric acid be mixed with; In described sour A mass fraction be 25% ~ 30% nitric acid and mass fraction be the volume ratio of the sulfuric acid of 35% ~ 40% be (0.7 ~ 0.75): 1;
Sour B described in step 10 six to be mass fraction be 10% ~ 20% sulfuric acid;
17: inspection eventually: the steel alloy retainer eventually after inspection step 10 six, obtains the steel alloy retainer of surface cleaning, free from admixture and dirt;
18: silver-plated: carry out silver-plated to the steel alloy retainer after step 10 seven, obtain steel alloy retainer.
The advantage of present embodiment:
1. because present embodiment retainer material hardness is higher, boring cutter or the reamer of the high speed steel material of former employing do not ensure technological requirement, through repeatedly studying and testing, the pocket hole now processing this retainer adopts digital controlled processing central machine tool, use the profile milling cutter of band coating to rough mill to process with finish-milling, the pocket hole inside and outside twin-lock mouth clamped one time of retainer is machined, decreases the process-cycle, improve production efficiency.
2. the size of profile milling cutter and the determination of geometry directly affect the working depth in retainer pocket hole and the size of inside and outside twin-lock mouth size, determine that can the assembly of full-size steel ball easily pass the minimum outer internal diameter size of outer ring, interior fore shaft 30 degree of angles in pocket hole are ensured by the top of profile milling cutter, outer fore shaft 60 degree of angles are ensured by the root of profile milling cutter, and the size in pocket hole reaches technological requirement by the programming on numerical control machining center.Center-diameter (chord length) control after pocket depth calculates with loading two finished product steel balls, ensures that the combination physical efficiency of retainer and full-size steel ball easily passes the minimum outer internal diameter size of outer ring.
3. △ d, d3 size of present embodiment appropriate design profile milling cutter, adopting this milling cutter to process retainer pocket hole is a kind of new processing method in production reality, and this cutter also can process other similar retainer pocket hole.By improving technique and cutter, have successfully completed the processing of this new construction mode of inside and outside twin-lock mouth circular hole steel alloy retainer, reach every physical dimension and the precision of technological requirement, improve the underproof problem of pocket hole surface roughness, effectively control the phenomenon of pocket hole dimension and pocket hole inside and outside twin-lock mouth size instability, inside and outside locking angle angle is difficult to ensure card, assembling fashionable dress do not enter overcoat, falls the situations such as ball and be all resolved.
4. the technique after improving is completed after brill, milling pocket hole operation by car outer step procedure arrangement, avoids drill bit tipping phenomenon.
5. due to cylindrical when brill, milling pocket hole not having step, make bit force even, therefore drill bit can not tipping.
6. in car, step procedure arrangement completed before brill, milling pocket hole operation, and because now turning is continuous turning, retainer uniform force, so the Vehicle Processing chatter mark eliminating on interior ledge surface.
7. bore, milling pocket hole procedure arrangement is after thin boring (finished product inner circle size), pocket depth is now easy to grasp, the pocket hole fore shaft size of machine-shaping is finished size, loading after two finished product steel balls can the size of direct-detection center-diameter, can ensure that full-size steel ball and retainer combine the minimum outer internal diameter size that physical efficiency easily passes outer ring, decrease brill simultaneously, allowance in hole milling operation, former processes allowance 3.4mm, existing processes allowance 2.4mm, decrease 29.41% altogether, greatly reduce drill bit, the wear rate of milling cutter, improve cutting-tool's used life.
8. the technique after improving adds all grinds two planes and finally all grinds two plane operations, and improve geometric accuracy and the dimensional accuracy of two planes to a certain extent, pocket hole phase mutual deviation is increased, and the position in pocket hole is more accurate.
Detailed description of the invention two: present embodiment and detailed description of the invention one unlike: the cutting speed described in step one is 120m/min ~ 260m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r.Other steps and parameter identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment and detailed description of the invention one or two unlike: the modifier treatment process described in step 2 is: first clean, then in vacuum oil quenching, Quenching Treatment 40min ~ 45min under temperature is 835 DEG C of conditions, clean after completing quenching, again in vacuum tempering furnace, temper 120min ~ 130min under temperature is 580 DEG C of conditions, obtains steel alloy retainer after modifier treatment.Other steps and parameter identical with detailed description of the invention one or two.
Detailed description of the invention four: one of present embodiment and detailed description of the invention one to three unlike: in step 3, the cutting speed of lathe is 120m/min ~ 260m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r.Other steps and parameter identical with one of detailed description of the invention one to three.
Detailed description of the invention five: one of present embodiment and detailed description of the invention one to four unlike: in step 4, the cutting speed of lathe is 120m/min ~ 260m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r.Other steps and parameter identical with one of detailed description of the invention one to four.
Detailed description of the invention six: one of present embodiment and detailed description of the invention one to five unlike: adopt centreless grinding machine external to carry out grinding to the cylindrical that width is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is the steel alloy retainer of 0.06mm in step 5, grinding wheel speed is 1440r/min, and guide wheel rotating speed is 54r/min.Other steps and parameter identical with one of detailed description of the invention one to five.
Detailed description of the invention seven: one of present embodiment and detailed description of the invention one to six unlike: in step 9, the cutting speed of lathe is 120m/min ~ 260m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r.Other steps and parameter identical with one of detailed description of the invention one to six.
Detailed description of the invention eight: one of present embodiment and detailed description of the invention one to seven unlike: in step 11, the cutting speed of lathe is 120m/min ~ 260m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r.Other steps and parameter identical with one of detailed description of the invention one to seven.
Detailed description of the invention nine: one of present embodiment and detailed description of the invention one to eight unlike: in step 13, the turning speed of lathe is 120m/min ~ 260m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r.Other steps and parameter identical with one of detailed description of the invention one to eight.
Detailed description of the invention ten: one of present embodiment and detailed description of the invention one to nine unlike: the silver coating thickness described in step 10 eight is 0.025mm ~ 0.045mm.Other steps and parameter identical with one of detailed description of the invention one to nine.
Test one: the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer of this test is carried out according to the following steps:
One, car is shaping: use carbide alloy inner diameter lathe tool alloy steel to carry out turning, obtain the steel alloy that internal diameter is 53mm, then the external diameter of the steel alloy that carbide alloy external diameter lathe tool inner diameter turning is 53mm is used, obtain that internal diameter is 53mm, external diameter is the alloy pipe of 67.4mm, re-use the end face that carbide alloy end face lathe tool inner diameter turning is 53mm, external diameter is the alloy pipe of 67.4mm, re-use cutoff tool to cut off, obtain the steel alloy retainer that shaping broadband is of a size of 16.5mm;
Cutting speed described in step one is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Two, modifier treatment: the steel alloy retainer that the shaping broadband obtained step one is of a size of 16.5mm carries out modifier treatment, described modifier treatment process is: first clean, then in WZC-60G vacuum oil quenching, Quenching Treatment 45min under temperature is 835 DEG C of conditions, clean after completing quenching, again in B84T vacuum tempering furnace, temper 125min under temperature is 580 DEG C of conditions, obtains steel alloy retainer after modifier treatment;
Three, finish turning upper surface 1: after the modifier treatment adopting engine lathe to obtain step 2, finish turning is carried out in the upper surface 1 of steel alloy retainer, obtains the steel alloy retainer that width is 15.8mm, flatness is 0.03mm;
In step 3, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Four, finish turning lower surface 2: adopt engine lathe to the width that step 3 obtains be 15.8mm, flatness is that finish turning is carried out in the lower surface 2 of the steel alloy retainer of 0.03mm, obtains the steel alloy retainer that width is 15.2mm, flatness is 0.03mm, parallel error is 0.06mm;
In step 4, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Five, cylindrical is roughly ground: adopt centreless grinding machine external to carry out grinding to the cylindrical that the width that step 4 obtains is 15.2mm, flatness is 0.03mm, parallel error is the steel alloy retainer of 0.06mm, obtain the steel alloy retainer that outside dimension is 66mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree are 0.06mm;
Adopt centreless grinding machine external to carry out grinding to the cylindrical that width is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is the steel alloy retainer of 0.06mm in step 5, grinding wheel speed is 1440r/min, and guide wheel rotating speed is 54r/min;
Six, finish turning inner circle: adopt engine lathe to the outside dimension that step 5 obtains be 66mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree be that the inner circle of the steel alloy retainer of 0.06mm carries out turning, obtains the steel alloy retainer that internal diameter size is 54mm, ovality 0.07mm, tapering 0.07mm, Wall-Thickness Difference 0.08mm, vertical difference 0.06mm;
In step 6, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Seven, all upper surface 1 and lower surface 2 is ground: employing M7475B surface grinding machine all grinds upper surface 1 and the lower surface 2 of the steel alloy retainer after step 6, and the planar dimension obtaining upper surface 1 is 14.8mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.8mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm;
Step 7 medium plain emery wheel rotating speed is 750r/min ~ 975r/min;
Eight, typewrite: adopt forcing press in 62.5mm diametrical position A place's marking that the planar dimension of the upper surface 1 that step 7 obtains is 14.8mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.8mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm, obtain the steel alloy retainer after marking;
Nine, step 3 and inside groove in car: in the steel alloy retainer after the marking adopting numerically controlled lathe, digital control processing internal turning tool and digital control processing groove cutter to obtain step 8, step 3 and inside groove carry out turning, turning to interior step is of a size of 57.4mm, turning is 64.2mm to inside groove, obtains the steel alloy retainer that interior step 3 is of a size of 57.4mm, inside groove is of a size of 64.2mm;
In step 9, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Ten, bore, hole milling: first adopt alloy bit step 9 is obtained in step 3 is of a size of 57.4mm, inside groove is of a size of 64.2mm steel alloy retainer pocket hole 5 hole, obtaining aperture size is
the degree of depth is the pocket hole 5 of 6mm, and then with alloy milling cutter, fore shaft in pocket hole 5 and outer fore shaft are processed, obtain that pocket hole 5 internal lock bicker degree is 30 °, fore shaft is of a size of 9.4mm in pocket hole 5, pocket hole 5 external lock bicker degree is 60 °, the outer fore shaft in pocket hole 5 is of a size of 9.8+0.1mm steel alloy retainer;
Cutting speed described in step 10 is 70m/min, and the amount of feeding is 45mm/min;
In this step for the milling cutter construction schematic diagram in milling pocket hole 5 as shown in Figure 1; Wherein d is the diameter of milling cutter, and Δ d is the drop of pocket bore dia and outer fore shaft diameter, d
3represent the outer fore shaft size of milling cutter; 30 ° is the angles of fore shaft in milling cutter processing retainer, 60 ° be the outer fore shaft of milling cutter processing retainer angle they will determine to process the correctness of retainer pocket hole dimension, inside and outside fore shaft size;
In this step, the center-diameter (chord length) of pocket hole 5 degree of depth after loading two finished product steel balls calculating controls, and ensures that the combination physical efficiency of retainer and full-size steel ball easily passes the minimum outer internal diameter size d of outer ring
4(see Fig. 2);
△d＝(D-d
1)÷2＝(d-d
3)÷2；
11, car outer step 4: adopt engine lathe to cut the steel alloy retainer after step 10, obtain outer step 4 broadband directly for 3.95mm, ovality be 0.05mm, the steel alloy retainer of tapering to be 0.05mm and wall thickness be 0.07mm;
In step 11, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
12, finally all grind upper surface 1 and lower surface 2: adopt M7475B surface grinding machine all to grind outer step 4 broadband that step 11 obtains directly for 3.95mm, ovality be 0.05mm, upper surface 1 and the lower surface 2 of tapering to be 0.05mm and wall thickness the be steel alloy retainer of 0.07mm, the planar dimension obtaining upper surface 1 is 14.75mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.75mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm;
Step 12 medium plain emery wheel rotating speed is 750r/min ~ 975r/min;
13, car chamfering: adopt the rib inner circle that the planar dimension of engine lathe to the upper surface 1 that step 12 obtains is 14.75mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.75mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm to carry out car chamfering, obtain the steel alloy retainer retainer that chamfer dimesion is 0.3X45;
In step 13, the turning speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
14, deburring: use deburring cutter to remove the burr in step and pocket hole, obtain the steel alloy retainer not having acute angle and burr;
15: light is adornd: use light polishing machine light decorations 3h, obtain the steel alloy retainer of belt surface light;
16: cleaning: first use sour A to carry out pickling 3 times to the steel alloy retainer after step 15, then use sour B to carry out pickling 1 time;
Sour A described in step 10 six be by mass fraction be 25% nitric acid and mass fraction be 35% sulfuric acid be mixed with; In described sour A mass fraction be 25% nitric acid and mass fraction be 35% ~ the volume ratio of sulfuric acid be 0.73:1;
Sour B described in step 10 six to be mass fraction be 15% sulfuric acid;
17: inspection eventually: the steel alloy retainer eventually after inspection step 10 six, obtains the steel alloy retainer of surface cleaning, free from admixture and dirt;
18: silver-plated: carry out silver-plated to the steel alloy retainer after step 10 seven, obtain steel alloy retainer;
Silver coating thickness described in step 10 eight is 0.03mm.
The bearing designation that the steel alloy retainer machined in test one is supporting: 276909NKW1 (H); The steel alloy of test described in one is 40CrNiMoA.
Test two: the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer of this test is carried out according to the following steps:
One, car is shaping: use carbide alloy inner diameter lathe tool alloy steel to carry out turning, obtain the steel alloy that internal diameter is 52.8mm, then the external diameter of the steel alloy that carbide alloy external diameter lathe tool inner diameter turning is 52.8mm is used, obtain that internal diameter is 52.8mm, external diameter is the alloy pipe of 67.2mm, re-use the end face that carbide alloy end face lathe tool inner diameter turning is 52.8mm, external diameter is the alloy pipe of 67.2mm, re-use cutoff tool to cut off, obtain the steel alloy retainer that shaping broadband is of a size of 16.3mm;
Cutting speed described in step one is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Two, modifier treatment: the steel alloy retainer that the shaping broadband obtained step one is of a size of 16.3mm carries out modifier treatment, described modifier treatment process is: first clean, then in WZC-60G vacuum oil quenching, Quenching Treatment 45min under temperature is 835 DEG C of conditions, clean after completing quenching, again in B84T vacuum tempering furnace, temper 125min under temperature is 580 DEG C of conditions, obtains steel alloy retainer after modifier treatment;
Three, finish turning upper surface 1: after the modifier treatment adopting engine lathe to obtain step 2, finish turning is carried out in the upper surface 1 of steel alloy retainer, obtains the steel alloy retainer that width is 15.7mm, flatness is 0.03mm;
In step 3, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Four, finish turning lower surface 2: adopt engine lathe to the width that step 3 obtains be 15.7mm, flatness is that finish turning is carried out in the lower surface 2 of the steel alloy retainer of 0.03mm, obtains the steel alloy retainer that width is 15.1mm, flatness is 0.03mm, parallel error is 0.06mm;
In step 4, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Five, cylindrical is roughly ground: adopt centreless grinding machine external to carry out grinding to the cylindrical that the width that step 4 obtains is 15.1mm, flatness is 0.03mm, parallel error is the steel alloy retainer of 0.06mm, obtain the steel alloy retainer that outside dimension is 65.9mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree are 0.06mm;
Adopt centreless grinding machine external to carry out grinding to the cylindrical that width is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is the steel alloy retainer of 0.06mm in step 5, grinding wheel speed is 1440r/min, and guide wheel rotating speed is 54r/min;
Six, finish turning inner circle: adopt engine lathe to the outside dimension that step 5 obtains be 65.9mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree be that the inner circle of the steel alloy retainer of 0.06mm carries out turning, obtains the steel alloy retainer that internal diameter size is 53.9mm, ovality 0.07mm, tapering 0.07mm, Wall-Thickness Difference 0.08mm, vertical difference 0.06mm;
In step 6, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Seven, all upper surface 1 and lower surface 2 is ground: employing M7475B surface grinding machine all grinds upper surface 1 and the lower surface 2 of the steel alloy retainer after step 6, and the planar dimension obtaining upper surface 1 is 14.6mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.6mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm;
Step 7 medium plain emery wheel rotating speed is 750r/min ~ 975r/min;
Eight, typewrite: adopt forcing press in 62.5mm diametrical position A place's marking that the planar dimension of the upper surface 1 that step 7 obtains is 14.6mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.6mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm, obtain the steel alloy retainer after marking;
Nine, step 3 and inside groove in car: in the steel alloy retainer after the marking adopting numerically controlled lathe, digital control processing internal turning tool and digital control processing groove cutter to obtain step 8, step 3 and inside groove carry out turning, turning to interior step 3 is of a size of 57.2mm, turning is of a size of 64mm to inside groove, obtains the steel alloy retainer that interior step 3 is of a size of 57.2mm, inside groove is of a size of 64mm;
In step 9, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
Ten, bore, hole milling: first adopt alloy bit step 9 is obtained in step 3 is of a size of 57.2mm, inside groove is of a size of 64mm steel alloy retainer pocket hole 5 hole, obtaining aperture size is
the degree of depth is the pocket hole 5 of 6mm, and then with alloy milling cutter, fore shaft in pocket hole 5 and outer fore shaft are processed, obtain that pocket hole 5 internal lock bicker degree is 30 °, fore shaft is of a size of 9.4mm in pocket hole 5, pocket hole 5 external lock bicker degree is 60 °, the outer fore shaft in pocket hole 5 is of a size of 9.8+0.1mm steel alloy retainer;
Cutting speed described in step 10 is 70m/min, and the amount of feeding is 45mm/min;
In this step for the milling cutter construction schematic diagram in milling pocket hole 5 as shown in Figure 1; Wherein d is the diameter of milling cutter, and Δ d is the drop of pocket bore dia and outer fore shaft diameter, d
3represent the outer fore shaft size of milling cutter; 30 ° is the angles of fore shaft in milling cutter processing retainer, 60 ° be the outer fore shaft of milling cutter processing retainer angle they will determine to process the correctness of retainer pocket hole dimension, inside and outside fore shaft size;
In this step, the center-diameter (chord length) of pocket hole 5 degree of depth after loading two finished product steel balls calculating controls, and ensures that the combination physical efficiency of retainer and full-size steel ball easily passes the minimum outer internal diameter size d of outer ring
4(see Fig. 2);
△d＝(D-d
1)÷2＝(d-d
3)÷2；
11, car outer step 4: adopt engine lathe to cut the steel alloy retainer after step 10, obtain outer step 4 broadband directly for 3.85mm, ovality be 0.05mm, the steel alloy retainer of tapering to be 0.05mm and wall thickness be 0.07mm;
In step 11, the cutting speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
12, finally all grind upper surface 1 and lower surface 2: adopt M7475B surface grinding machine all to grind outer step 4 broadband that step 11 obtains directly for 3.95mm, ovality be 0.05mm, upper surface 1 and the lower surface 2 of tapering to be 0.05mm and wall thickness the be steel alloy retainer of 0.07mm, the planar dimension obtaining upper surface 1 is 14.7mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.7mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm;
Step 12 medium plain emery wheel rotating speed is 750r/min ~ 975r/min;
13, car chamfering: adopt the rib inner circle that the planar dimension of engine lathe to the upper surface 1 that step 12 obtains is 14.7mm, the parallel error of upper surface 1 is 0.02mm, the flatness of upper surface 1 is 0.01mm, the planar dimension of lower surface 2 is 14.7mm, the parallel error of lower surface 2 is 0.02mm, the flatness of lower surface 2 is the steel alloy retainer of 0.01mm to carry out car chamfering, obtain the steel alloy retainer retainer that chamfer dimesion is 0.3X45;
In step 13, the turning speed of lathe is 200m/min, and the amount of feeding is 0.2mm/r ~ 0.25mm/r;
14, deburring: use deburring cutter to remove the burr in step and pocket hole, obtain the steel alloy retainer not having acute angle and burr;
15: light is adornd: use light polishing machine light decorations 1.5h, obtain the steel alloy retainer of belt surface light;
16: cleaning: first use sour A to carry out pickling 3 times to the steel alloy retainer after step 15, then use sour B to carry out pickling 1 time;
Sour A described in step 10 six be by mass fraction be 30% nitric acid and mass fraction be 40% sulfuric acid be mixed with; In described sour A mass fraction be 30% nitric acid and mass fraction be 40% ~ the volume ratio of sulfuric acid be 0.73:1;
Sour B described in step 10 six to be mass fraction be 15% sulfuric acid;
17: inspection eventually: the steel alloy retainer eventually after inspection step 10 six, obtains the steel alloy retainer of surface cleaning, free from admixture and dirt;
18: silver-plated: carry out silver-plated to the steel alloy retainer after step 10 seven, obtain steel alloy retainer;
Silver coating thickness described in step 10 eight is 0.03mm.
The bearing designation that the steel alloy machined in test two is supporting: it is 40CrNiMoA that 476208NKW1 tests the steel alloy described in.
Claims (10)
1. an inside and outside twin-lock mouth circular hole steel alloy retainer processing method, it is characterized in that a kind of processing method of inside and outside twin-lock mouth circular hole steel alloy retainer is carried out according to the following steps:
One, car is shaping: use carbide alloy inner diameter lathe tool alloy steel to carry out turning, obtain the steel alloy that internal diameter is 52.8mm ~ 53mm, then the external diameter of the steel alloy that carbide alloy external diameter lathe tool inner diameter turning is 52.8mm ~ 53mm is used, obtaining internal diameter is 52.8mm ~ 53mm, external diameter is the alloy pipe of 67.2mm ~ 67.4mm, re-using carbide alloy end face lathe tool inner diameter turning is 52.8mm ~ 53mm, external diameter is the end face of the alloy pipe of 67.2mm ~ 67.4mm, re-use cutoff tool to cut off, obtain the steel alloy retainer that shaping broadband is of a size of 16.3mm ~ 16.5mm,
Two, modifier treatment: the steel alloy retainer that the shaping broadband obtained step one is of a size of 16.3mm ~ 16.5mm carries out modifier treatment, described modifier treatment process is: first clean, then in vacuum oil quenching, Quenching Treatment 40min ~ 45min under temperature is 830 ~ 840 DEG C of conditions, clean after completing quenching, again in vacuum tempering furnace, temper 120min ~ 130min under temperature is 575 ~ 585 DEG C of conditions, obtains steel alloy retainer after modifier treatment;
Three, finish turning upper surface (1): after the modifier treatment adopting engine lathe to obtain step 2, finish turning is carried out in the upper surface (1) of steel alloy retainer, obtains the steel alloy retainer that width is 15.7mm ~ 15.8mm, flatness is 0.03mm;
Four, finish turning lower surface (2): adopt engine lathe to the width that step 3 obtains be 15.7mm ~ 15.8mm, flatness is that finish turning is carried out in the lower surface (2) of the steel alloy retainer of 0.03mm, obtains the steel alloy retainer that width is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is 0.06mm;
Five, cylindrical is roughly ground: adopt centreless grinding machine external to carry out grinding to the cylindrical that the width that step 4 obtains is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is the steel alloy retainer of 0.06mm, obtain the steel alloy retainer that outside dimension is 65.9mm ~ 66mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree are 0.06mm;
Six, finish turning inner circle: adopt engine lathe to the outside dimension that step 5 obtains be 65.9mm ~ 66mm, external diameter ovality 0.05mm, external diameter tapering 0.05mm, external diameter faceted pebble degree be that the inner circle of the steel alloy retainer of 0.06mm carries out turning, obtains the steel alloy retainer that internal diameter size is 53.9mm ~ 54mm, ovality 0.07mm, tapering 0.07mm, Wall-Thickness Difference 0.08mm, vertical difference 0.06mm;
Seven, upper surface (1) and lower surface (2) are all ground: employing M7475B surface grinding machine all grinds upper surface (1) and lower surface (2) of the steel alloy retainer after step 6, and the planar dimension obtaining upper surface (1) is 14.6mm ~ 14.8mm, the parallel error of upper surface (1) is 0.02mm, the flatness of upper surface (1) is 0.01mm, the planar dimension of lower surface (2) is 14.6mm ~ 14.8mm, the parallel error of lower surface (2) is 0.02mm, the flatness of lower surface (2) is the steel alloy retainer of 0.01mm;
Eight, typewrite: 62.5mm diametrical position place's marking that the planar dimension of the upper surface (1) adopting forcing press to obtain in step 7 is 14.6mm ~ 14.8mm, the parallel error of upper surface (1) is 0.02mm, the flatness of upper surface (1) is 0.01mm, the planar dimension of lower surface (2) is 14.6mm ~ 14.8mm, the parallel error of lower surface (2) is 0.02mm, the flatness of lower surface (2) is the steel alloy retainer of 0.01mm, obtains the steel alloy retainer after marking;
Nine, step (3) and inside groove in car: in the steel alloy retainer after the marking adopting numerically controlled lathe, digital control processing internal turning tool and digital control processing groove cutter to obtain step 8, step (3) and inside groove carry out turning, turning to interior step (3) is of a size of 57.2mm ~ 57.4mm, turning is 64mm ~ 64.2mm to inside groove, obtains the steel alloy retainer that interior step (3) is of a size of 57.2mm ~ 57.4mm, inside groove is of a size of 64mm ~ 64.2mm;
Ten, bore, hole milling: first adopt alloy bit step 9 is obtained in step be of a size of 57.2mm ~ 57.4mm, hole in the steel alloy retainer pocket hole (5) that inside groove is of a size of 64mm ~ 64.2mm, obtaining aperture size is φ 9+0.1, the degree of depth is the pocket hole (5) of 6mm, and then with alloy milling cutter, the interior fore shaft of pocket hole (5) and outer fore shaft are processed, obtaining pocket hole (5) internal lock bicker degree is 30 °, pocket hole (5) interior fore shaft is of a size of 9.4mm, pocket hole (5) external lock bicker degree is 60 °, pocket hole (5) outer fore shaft is of a size of the steel alloy retainer of 9.8+0.1mm,
Cutting speed described in step 10 is 60m/min ~ 80m/min, and the amount of feeding is 40mm/min ~ 50mm/min;
11, car outer step (4): adopt engine lathe to cut the steel alloy retainer after step 10, obtain outer step (4) broadband directly for 3.85mm ~ 3.95mm, ovality be 0.05mm, the steel alloy retainer of tapering to be 0.05mm and wall thickness be 0.07mm;
12, finally all grind upper surface (1) and lower surface (2): outer step broadband that step 11 obtains is directly 3.85mm ~ 3.95mm to adopt M7475B surface grinding machine all to grind, ovality is 0.05mm, upper surface (1) and lower surface (2) of tapering to be 0.05mm and wall thickness the be steel alloy retainer of 0.07mm, the planar dimension obtaining upper surface (1) is 14.7mm ~ 14.75mm, the parallel error of upper surface (1) is 0.02mm, the flatness of upper surface (1) is 0.01mm, the planar dimension of lower surface (2) is 14.7mm ~ 14.75mm, the parallel error of lower surface (2) is 0.02mm, the flatness of lower surface (2) is the steel alloy retainer of 0.01mm,
13, car chamfering: the rib inner circle that the planar dimension of the upper surface (1) adopting engine lathe to obtain step 12 is 14.7mm ~ 14.75mm, the parallel error of upper surface (1) is 0.02mm, the flatness of upper surface (1) is 0.01mm, the planar dimension of lower surface (2) is 14.7mm ~ 14.75mm, the parallel error of lower surface (2) is 0.02mm, the flatness of lower surface (2) is the steel alloy retainer of 0.01mm carries out car chamfering, obtains the steel alloy retainer retainer that chamfer dimesion is 0.3X45;
14, deburring: use deburring cutter to remove the burr in step and pocket hole, obtain the steel alloy retainer not having acute angle and burr;
15: light is adornd: use light polishing machine light decorations 1.5h ~ 3h, obtain the steel alloy retainer of belt surface light;
16: cleaning: first use sour A to carry out pickling 3 times to the steel alloy retainer after step 15, then use sour B to carry out pickling 1 time;
Sour A described in step 10 six be by mass fraction be 25% ~ 30% nitric acid and mass fraction be 35% ~ 40% sulfuric acid be mixed with; In described sour A mass fraction be 25% ~ 30% nitric acid and mass fraction be the volume ratio of the sulfuric acid of 35% ~ 40% be (0.7 ~ 0.75): 1;
Sour B described in step 10 six to be mass fraction be 10% ~ 20% sulfuric acid;
17: inspection eventually: the steel alloy retainer eventually after inspection step 10 six, obtains the steel alloy retainer of surface cleaning, free from admixture and dirt;
18: silver-plated: carry out silver-plated to the steel alloy retainer after step 10 seven, obtain steel alloy retainer.
2. the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer according to claim 1, it is characterized in that the cutting speed described in step one is 120m/min ~ 260m/min, the amount of feeding is 0.2mm/r ~ 0.25mm/r.
3. the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer according to claim 1, it is characterized in that the modifier treatment process described in step 2 is: first clean, then in vacuum oil quenching, Quenching Treatment 40min ~ 45min under temperature is 835 DEG C of conditions, clean after completing quenching, again in vacuum tempering furnace, temper 120min ~ 130min under temperature is 580 DEG C of conditions, obtains steel alloy retainer after modifier treatment.
4. the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer according to claim 1, it is characterized in that the cutting speed of lathe in step 3 is 120m/min ~ 260m/min, the amount of feeding is 0.2mm/r ~ 0.25mm/r.
5. the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer according to claim 1, it is characterized in that the cutting speed of lathe in step 4 is 120m/min ~ 260m/min, the amount of feeding is 0.2mm/r ~ 0.25mm/r.
6. the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer according to claim 1, it is characterized in that adopting in step 5 centreless grinding machine external to carry out grinding to the cylindrical that width is 15.1mm ~ 15.2mm, flatness is 0.03mm, parallel error is the steel alloy retainer of 0.06mm, grinding wheel speed is 1440r/min, and guide wheel rotating speed is 54r/min.
7. the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer according to claim 1, it is characterized in that the cutting speed of lathe in step 9 is 120m/min ~ 260m/min, the amount of feeding is 0.2mm/r ~ 0.25mm/r.
8. the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer according to claim 1, it is characterized in that the cutting speed of lathe in step 11 is 120m/min ~ 260m/min, the amount of feeding is 0.2mm/r ~ 0.25mm/r.
9. the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer according to claim 1, it is characterized in that the turning speed of lathe in step 13 is 120m/min ~ 260m/min, the amount of feeding is 0.2mm/r ~ 0.25mm/r.
10. the processing method of a kind of inside and outside twin-lock mouth circular hole steel alloy retainer according to claim 1, is characterized in that the silver coating thickness described in step 10 eight is 0.025mm ~ 0.045mm.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106239068A (en) * | 2016-08-31 | 2016-12-21 | 中航工业哈尔滨轴承有限公司 | A kind of processing technique of ball bearing solid cage |
| CN108161368A (en) * | 2018-01-26 | 2018-06-15 | 洛阳富海合精工机械有限公司 | A kind of processing method of integral type shield arbor bearing retainer |
| CN106493523B (en) * | 2016-12-15 | 2018-07-31 | 中航工业哈尔滨轴承有限公司 | A kind of processing technology of steel alloy divergence type solid cage |
| CN109531078A (en) * | 2019-01-14 | 2019-03-29 | 中国航发哈尔滨轴承有限公司 | A kind of processing method of phenolic aldehyde adhesive plaster divergence type solid cage |
| CN109732293A (en) * | 2019-03-27 | 2019-05-10 | 中国航发哈尔滨轴承有限公司 | A kind of thin-walled divergence type solid cage processing method |
| CN109894826A (en) * | 2019-04-25 | 2019-06-18 | 中国航发哈尔滨轴承有限公司 | Outer ring is without rib cylindrical roller bearing silicon bronze solid cage processing method |
| CN110826162A (en) * | 2019-12-16 | 2020-02-21 | 中国航发哈尔滨轴承有限公司 | Design method of double-half inner ring ball bearing inner and outer double-locking structure retainer |
| CN110886777A (en) * | 2018-09-07 | 2020-03-17 | 浙江中达精密部件股份有限公司 | Manufacturing method of oil storage cavity bearing steel bushing |
| CN111037241A (en) * | 2020-01-14 | 2020-04-21 | 瓦房店阿科比轴承有限公司 | Comb type retainer preparation process |
| CN111069859A (en) * | 2019-12-30 | 2020-04-28 | 武昌船舶重工集团有限公司 | Processing method of annular base |
| CN112404911A (en) * | 2020-12-07 | 2021-02-26 | 大连瑞谷科技有限公司 | Processing technology for pocket hole of spherical roller bearing retainer |
| CN112692522A (en) * | 2020-12-23 | 2021-04-23 | 中国航发哈尔滨轴承有限公司 | Deep groove ball inner ring ball mounting gap processing method |
| CN113399957A (en) * | 2021-07-29 | 2021-09-17 | 中国航发哈尔滨轴承有限公司 | Processing method of cylindrical roller bearing solid retainer with double flanges on inner ring |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106239068A (en) * | 2016-08-31 | 2016-12-21 | 中航工业哈尔滨轴承有限公司 | A kind of processing technique of ball bearing solid cage |
| CN106493523B (en) * | 2016-12-15 | 2018-07-31 | 中航工业哈尔滨轴承有限公司 | A kind of processing technology of steel alloy divergence type solid cage |
| CN108161368A (en) * | 2018-01-26 | 2018-06-15 | 洛阳富海合精工机械有限公司 | A kind of processing method of integral type shield arbor bearing retainer |
| CN110886777B (en) * | 2018-09-07 | 2021-06-11 | 浙江中达精密部件股份有限公司 | Manufacturing method of oil storage cavity bearing steel bushing |
| CN110886777A (en) * | 2018-09-07 | 2020-03-17 | 浙江中达精密部件股份有限公司 | Manufacturing method of oil storage cavity bearing steel bushing |
| CN109531078B (en) * | 2019-01-14 | 2020-10-13 | 中国航发哈尔滨轴承有限公司 | Processing method of phenolic aldehyde rubberized fabric separated entity retainer |
| CN109531078A (en) * | 2019-01-14 | 2019-03-29 | 中国航发哈尔滨轴承有限公司 | A kind of processing method of phenolic aldehyde adhesive plaster divergence type solid cage |
| CN109732293A (en) * | 2019-03-27 | 2019-05-10 | 中国航发哈尔滨轴承有限公司 | A kind of thin-walled divergence type solid cage processing method |
| CN109732293B (en) * | 2019-03-27 | 2021-03-26 | 中国航发哈尔滨轴承有限公司 | Thin-wall separation type solid retainer processing method |
| CN109894826A (en) * | 2019-04-25 | 2019-06-18 | 中国航发哈尔滨轴承有限公司 | Outer ring is without rib cylindrical roller bearing silicon bronze solid cage processing method |
| CN110826162A (en) * | 2019-12-16 | 2020-02-21 | 中国航发哈尔滨轴承有限公司 | Design method of double-half inner ring ball bearing inner and outer double-locking structure retainer |
| CN110826162B (en) * | 2019-12-16 | 2023-04-07 | 中国航发哈尔滨轴承有限公司 | Design method of double-half inner ring ball bearing inner and outer double-locking structure retainer |
| CN111069859B (en) * | 2019-12-30 | 2020-12-01 | 武昌船舶重工集团有限公司 | Processing method of annular base |
| CN111069859A (en) * | 2019-12-30 | 2020-04-28 | 武昌船舶重工集团有限公司 | Processing method of annular base |
| CN111037241A (en) * | 2020-01-14 | 2020-04-21 | 瓦房店阿科比轴承有限公司 | Comb type retainer preparation process |
| CN112404911B (en) * | 2020-12-07 | 2022-08-16 | 大连瑞谷科技有限公司 | Processing technology for pocket hole of spherical roller bearing retainer |
| CN112404911A (en) * | 2020-12-07 | 2021-02-26 | 大连瑞谷科技有限公司 | Processing technology for pocket hole of spherical roller bearing retainer |
| CN112692522A (en) * | 2020-12-23 | 2021-04-23 | 中国航发哈尔滨轴承有限公司 | Deep groove ball inner ring ball mounting gap processing method |
| CN113399957A (en) * | 2021-07-29 | 2021-09-17 | 中国航发哈尔滨轴承有限公司 | Processing method of cylindrical roller bearing solid retainer with double flanges on inner ring |
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