CN106514137A - Machining process of no-tooth strip blockage rotating support structural part and support - Google Patents
Machining process of no-tooth strip blockage rotating support structural part and support Download PDFInfo
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- CN106514137A CN106514137A CN201610852814.7A CN201610852814A CN106514137A CN 106514137 A CN106514137 A CN 106514137A CN 201610852814 A CN201610852814 A CN 201610852814A CN 106514137 A CN106514137 A CN 106514137A
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a machining process of a no-tooth strip blockage rotating support structural part. The machining process comprises rough turning, hole boring, drilling and reaming, semi-finish turning, primary heat treatment, tempering, finish turning, hole reaming, linear cutting, secondary heat treatment, lineation, drilling and assembly. In the machining process of the no-tooth strip blockage rotating support structural part, when a device is used after assembly, as a blockage hole and a taper pin hole are harder than a rolling way, the wear of a rolling body to the blockage hole and the taper pin hole is reduced, the device can bear higher extrusion force, the unstable operation and the damage of the device caused by unsmooth operation of the rolling body to a matching gap due to increment of the matching gap of a device blockage part caused by wear and deformation of the blockage hole and the taper pin hole in long-time operation are prevented, the device can be stably operated for a long time, the device maintenance time and cost are reduced, and the device working efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of mechanical processing technique, in particular relate to a kind of block pivoting support structure member without cingulum
Processing technique and supporting.
Background technology
Pivoting support is a kind of large size bearing that can bear combined load, can bear larger axial, radial direction simultaneously
Load and tilting moment.Pivoting support using very extensively, is known as in real industry：" joint of machine ", is two things
Need to make relative gyration between body, important biography necessary to the machinery of axial force, radial force, tilting moment need to be born again simultaneously
Dynamic component.General rotary supporting device is all that plugging hole is arranged on the outer ring surface of outer ring, for blocking the blocking of plugging hole
Block is fixed with pin, and for raceway, plugging hole and taper pin-hole are all heat treatment process, Hardness Control is identical, and this
In the actually used running of device, rolling element is rubbed to raceway and is extruded when rolling one week the processing technique of sample, together
When also plugging block is carried out extruding, is rubbed, and between plugging block and plugging hole and pin, all have fit clearance, each rolling
Kinetoplast is once extruded to plugging block, is rubbed, and plugging block will be once extruded, be rubbed to plugging hole and pin, and is sold
Nail then can be compressed and rubbed against to taper pin-hole, and device fortune circles, then having many rolling elements carries out extruding, rubs to plugging block
Wipe.Device long time running, plugging block are very big to the amount of compressing and rubbing against of taper pin-hole to plugging hole and pin so as to easily grind
Deformation is damaged, increases fit clearance each other so that device is unable to long-time stable operating, it is necessary to be maintained,
So that maintenance cost increases, and reduces the work efficiency of device, for avoiding such case, it is necessary to lifting blockage hole and taper pin
The hardness and mechanical performance in hole, for this reason, it may be necessary to change existing situation, is unable to asking for long-time steady operation with solving device
Topic.
The content of the invention
For the problem that above-mentioned prior art is present, present invention offer is a kind of to block pivoting support structure member without cingulum
Processing technique, can cause the operation of device long-time stable, reduce the maintenance time and cost of device, substantially increase device
Work efficiency.
To achieve these goals, the technical solution used in the present invention is：
A kind of processing technique for blocking pivoting support structure member without cingulum, its technical process include：Rough turn, bore hole, brill
Hinge, half smart car, heat treatment, tempering, smart car, line, drilling and assembling, described structure member is outer ring, the outer ring plus
Work step is suddenly as follows：
(1) the rough turn stage：
Rough turn I-stage：Clamping forging blank corrects endoporus bounce≤1.5mm, end face run-out≤1.2mm, root to lathe
According to turning process drawing turning, dimensional discrepancy control retains surplus 5-10mm in ± 0.8mm, and car datum level A, holding are shown in light
Zero defect, inside and outside 2 × 45 ° of rounded corner on datum level A；
The rough turn II stages：To lathe, datum level A is adjacent to equal height cushion block to clamping forging blank, correct cylindrical bounce≤
0.8mm, according to turning process drawing in-car hole, dimensional discrepancy is controlled in ± 0.4mm, retaining surplus 5-10mm, face work B is protected
The balance of 2-5mm of card height dimension, inside and outside 2 × 45 ° of rounded corner on end face B；
(2) the bore hole stage：Any end face of workpiece after will be rough turn is placed on equal height cushion block, and dress pressing plate is compressed, and makes datum level A
It is parallel with boring table face, adjust drill bit so as to which centrage is perpendicular with cylindrical peak tangent line, according to processing drawing to work
Part plugging hole carries out Boring, and aperture is machined to surplus 0.7-1.0mm, then is reamer by bit change-over, is cut with scissors using reamer
Hole, retains surplus 0.1-0.15mm；
(3) drill and ream the stage：Workpiece non-referenced face is placed on Drilling machines bench equal height cushion block, is compressed with dress pressing plate, filling
Plugging block, control plugging block should not expose or be absorbed in, and blocking centrage is caused upper surface, and center line of bit is moved to workpiece
Hole reference circle is blocked with upper surface on the intersection point of centrage, first carries out taper pin hole machined with drill bit, changes reamer fraising after being drilled again,
Retain 0.5-0.9mm surpluses, taper 1:50；
(4) half smart car stages：
Half smart car I-stage：Datum level A is placed on equal height cushion block, clamping is cylindrical, corrects cylindrical bounce≤0.25mm, and
Compressed at cylindrical place with four groups of pressing plates, according to turning process drawing, endoporus machined, be machined to drawing requirement size,
With circular knife car raceway, retain surplus 0.1-0.2mm, the oil groove that radius is that R depth is d is cut in track centre line position, then unloaded
Fall pressing plate, to end face B Vehicle Processing 1-2mm, 2 × 45 ° of end chamfer；
Half smart car II stage：Non-referenced face is placed on equal height cushion block, endoporus bounce≤0.15mm is corrected, is used pressing plate pressure
Tightly, according to turning process drawing, car seal groove, then pressing plate is changed to into the inside successively, machine to foreign round, be machined to figure
Paper desired size, surface roughness requirements Ra3.2, then cylindrical, release pressing plate is clamped with claw, datum level A is machined
1-2mm, surface roughness requirements Ra3.2,2 × 45 ° of end chamfer；
(5) I heat treatment stages：Carry out mid frequency induction hardening heat treatment to raceway, plugging hole and taper pin-hole, depth of hardening zone >=
3mm；
(6) tempering stage：After mid frequency induction hardening, 4h is tempered at 200 DEG C, control hardness for 55-62HRC；
(7) the smart car stage：Datum level A is placed on isometry block, endoporus bounce≤0.05mm is corrected, is compressed with pressing plate, used
Circular knife car raceway is Ra1.6 to drawing requirement size, control surface roughness, then clamps cylindrical, release pressing plate with claw, point
It is other that datum level A and end face B are machined, height dimension H is machined to into drawing requirement size, end face surface roughness requirements
Ra3.2,2 × 45 ° of end chamfer；
(8) ream the stage：By on the clamping workpiece after smart car to drilling machine, plugging hole reamer is finish reamed to drawing requirement chi
It is very little；
(9) the wire cutting stage：Workpiece end face B is lain on the work top of wire cutting board, is corrected with amesdial, pressure
Plate is compressed, and is worn silk to knife, is carried out linear cutter to taper pin-hole, is machined to drawing requirement size, taper 1:50；
(10) II heat treatment stages：The plugging hole and taper pin-hole of workpiece are carried out into Carburization Treatment, then mid frequency induction hardening is quenched
Hard formation depth >=3mm, is tempered 4h after quenching at 200 DEG C, controls hardness for 60-65HRC；
(11) rule the stage：After the overall dimensions of measurement part, rule and positioning process according to drawing regulation；
(12) drilling stage：End face B is placed on radial drill workbench equal-height block, is compressed with pressing plate, it is ensured that workpiece is steady
Without tilting, center line of bit alignment hole center is carried out into brill installing hole, control installing hole diameter error is not more than 0.05mm；
(13) assembling stage：Part is carried out trial assembly to match somebody with somebody, preliminary clearance is measured, according to data and trial assembly clearance is calculated, is clamped
Work carries out last grinding again, allots final drawing regulation clearance；
(14) put in storage：Respective record is detected and is made to part, is demagnetized, cleans, packed and provided the quality certification, warehouse-in；
Used as the further optimization of such scheme, the forging blank material trademark is 50Mn.
As the further optimization of such scheme, during the bore hole stage process, aperture surface spray by 75% plant
The combination cooling that thing oil is constituted with 25% kerosene is oily, control surface roughness≤Ra6.3, perpendicularity≤0.1mm/m.
Used as the further optimization of such scheme, the bore hole stage, the boring cutter amount of feeding is 0.5-0.8mm/r, and boring bar turns
Speed is 15-25r/min.
As the further optimization of such scheme, the drilling in the stage that drills and reams, drilled through with the drill bit of Φ 10mm first, its
2/3 hole depth of drill bit counterboring of secondary use Φ 10.5mm, then with 1/3 hole depth of drill bit counterboring of Φ 11.
As the further optimization of such scheme, outer bowlder is clamped in the half smart car stage and smart car stage with claw,
Claw is lived with cylindrical contact position copper sheet pad, and each claw clamping stress will equilibrium.
The invention also discloses one kind blocks pivoting support without cingulum, possess what is formed by the processing technique of structure member
Outer ring.
The invention also discloses a kind of processing technique for blocking pivoting support structure member without cingulum, its technical process bag
Include：Rough turn, half smart car, heat treatment, tempering, smart car, line, drilling and assembling, described structure member is inner ring, the inner ring
Procedure of processing it is as follows：
(1) the rough turn stage：
Rough turn I-stage：Clamping forging blank corrects endoporus bounce≤1.5mm, end face run-out≤1.2mm, root to lathe
According to turning process drawing turning, dimensional discrepancy control retains surplus 5-10mm in ± 0.7mm, and car datum level C, holding are shown in light
Zero defect, inside and outside 2 × 45 ° of rounded corner on datum level C；
The rough turn II stages：To lathe, datum level C is adjacent to equal height cushion block to clamping forging blank, correct cylindrical bounce≤
0.8mm, according to turning process drawing in-car hole, dimensional discrepancy is controlled in ± 0.4mm, retaining surplus 5-10mm, face work D is protected
The balance of 2-5mm of card height dimension, inside and outside 2 × 45 ° of rounded corner on end face B；
(2) half smart car stages：
Half smart car I-stage：Datum level C is placed on equal height cushion block, clamping is cylindrical, corrects cylindrical bounce≤0.25mm, and
Compressed at cylindrical place with four groups of pressing plates, according to turning process drawing, endoporus machined, be machined to drawing requirement size,
With circular knife car raceway, retain surplus 0.1-0.2mm, then lay down pressing plate, to end face Vehicle Processing 1-2mm, 2 × 45 ° of end chamfer；
Half smart car II stage：Non-referenced face is placed on equal height cushion block, endoporus bounce≤0.15mm is corrected, is used pressing plate pressure
Tightly, according to turning process drawing, pressing plate is changed to the inside to drawing requirement size, then successively by car seal groove, is carried out to foreign round
Vehicle Processing, is machined to drawing requirement size, surface roughness requirements Ra3.2, then is clamped cylindrical with claw, unclamps pressing plate, to base
Quasi- face C machines 1-2mm, surface roughness requirements Ra3.2,2 × 45 ° of end chamfer；
(3) heat treatment stages：Mid frequency induction hardening heat treatment, depth of hardening zone >=3mm is carried out to raceway face；
(4) tempering stage：After mid frequency induction hardening, 4h is tempered at 200 DEG C, control hardness for 55-62HRC；
(5) the smart car stage：Datum level C is placed on isometry block, endoporus bounce≤0.05mm is corrected, is compressed with pressing plate, used
Circular knife car raceway is Ra1.6 to drawing requirement size, control surface roughness, then clamps cylindrical, release pressing plate with claw, point
It is other that datum level C and end face D are machined, height dimension L is machined to into drawing requirement size, end face surface roughness requirements
Ra3.2,2 × 45 ° of end chamfer；
(6) rule the stage：After the overall dimensions of measurement part, rule and positioning process according to drawing regulation；
(7) drilling stage：End face D is placed on radial drill workbench equal-height block, is compressed with pressing plate, it is ensured that the steady nothing of workpiece
Center line of bit alignment hole center is carried out brill installing hole by tilting, and control installing hole diameter error is not more than 0.05mm；
(8) assembling stage：Part is carried out trial assembly to match somebody with somebody, preliminary clearance is measured, according to calculating data and trial assembly clearance, pincers worker
Last grinding is carried out again, allots final drawing regulation clearance；
(9) put in storage：Respective record is detected and is made to part, is demagnetized, cleans, packed and provided the quality certification, warehouse-in；
As the further optimization of such scheme, when the rough turn stage, half smart car stage and smart car stage process, in car
Finished surface spray by 50% vegetable oil, 20% kerosene, 20% saponification liquor and 10% the combination cooling liquid that constitutes of water,
Control surface roughness≤Ra6.3.
The invention also discloses one kind blocks pivoting support without cingulum, possess what is formed by the processing technique of structure member
Inner ring.
Compared with prior art, beneficial effects of the present invention are as follows：
1st, a kind of processing technique for blocking pivoting support outer ring without cingulum of the invention, leaves surplus during by half smart car,
After raceway, I heat treatment of plugging hole and taper pin-hole, drawing requirement size is machined to, then plugging hole and taper pin-hole are entered
II heat treatment of row, improves the diffusion layer organization of plugging hole and taper pin-hole, and crystal grain thinning further improves its hardness so that blocking
Hardness of the surface hardness of hole and taper pin-hole more than raceway so as to more wear-resisting and stress, is easy to long-time not produce when using
Change shape, affects the accurate operating of device.
2nd, a kind of processing technique for blocking pivoting support structure member without cingulum of the invention, uses after device assembling
When, because the hardness of plugging hole and taper pin-hole reduces abrasion of the rolling element to plugging hole and taper pin-hole more than the hardness of raceway,
Which is allow to bear bigger extruding force, it is to avoid in long time running, because the abrasion and deformation of plugging hole and taper pin-hole,
And cause device block part fit clearance to become big, rolling element runs to, cause device fluctuation of service and
Destruction, the present invention so processed can cause the operation of device long-time stable, reduce the maintenance time and cost of device,
Substantially increase the work efficiency of device.
Description of the drawings
Fig. 1 is that a kind of outer ring overall structure of processing technique for blocking pivoting support structure member without cingulum of the present invention is cutd open
Face schematic diagram.
Fig. 2 is to show in a kind of outer ring rough turn stage of processing technique for blocking pivoting support structure member without cingulum of the present invention
It is intended to.
Fig. 3 is to show in a kind of outer ring bore hole stage of processing technique for blocking pivoting support structure member without cingulum of the present invention
It is intended to.
Fig. 4 is to show in a kind of outer ring stage of drilling and reaming of processing technique for blocking pivoting support structure member without cingulum of the present invention
It is intended to.
Fig. 5 is a kind of half smart car stage of outer ring of processing technique for blocking pivoting support structure member without cingulum of the present invention
Schematic diagram.
Fig. 6 is to show in a kind of outer ring smart car stage of processing technique for blocking pivoting support structure member without cingulum of the present invention
It is intended to.
Fig. 7 is a kind of outer ring wire cutting of processing technique for blocking pivoting support structure member without cingulum of the present invention, hinge
Hole stage schematic diagram.
Fig. 8 is a kind of outer ring line of processing technique for blocking pivoting support structure member without cingulum of the present invention, drilling
Stage schematic diagram.
Fig. 9 is to show in a kind of inner ring rough turn stage of processing technique for blocking pivoting support structure member without cingulum of the present invention
It is intended to.
Figure 10 be the present invention it is a kind of without cingulum block pivoting support structure member processing technique half smart car of inner ring and
Smart car stage schematic diagram.
Figure 11 is a kind of inner ring drilling stage of processing technique for blocking pivoting support structure member without cingulum of the present invention
Schematic diagram.
In figure, reference is：1st, endoporus；2nd, it is cylindrical；3rd, plugging hole；4th, taper pin-hole；5th, raceway；6th, oil groove；7th, sealing ring
Groove；8th, installing hole.
Specific embodiment
For making the object, technical solutions and advantages of the present invention of greater clarity, below by embodiment, the present invention is entered
Row is further described.However, it should be understood that specific embodiment described herein is only to explain the present invention, and without
In restriction the scope of the present invention.
Referring to accompanying drawing, using a kind of processing technique of the outer ring for blocking pivoting support without cingulum of the present invention, including following step
Suddenly：
(1) the rough turn stage：Referring to Fig. 2, a kind of processing technique for blocking pivoting support structure member without cingulum of the present invention
The rough turn stage schematic diagram in outer ring.
Rough turn I-stage：Clamping forging blank to lathe, beat≤1.5mm, end face run-out≤1.2mm by correction endoporus 1,
According to turning process drawing turning 2, dimensional discrepancy control retains surplus 5-10mm in ± 0.8mm, and car datum level A keeps seeing
Light zero defect, inside and outside 2 × 45 ° of rounded corner on datum level A, the forging blank material trademark is 50Mn；
The rough turn II stages：To lathe, datum level A is adjacent to equal height cushion block to clamping forging blank, correct cylindrical 2 bounce≤
0.8mm, according to turning process drawing in-car hole 1, dimensional discrepancy is controlled in ± 0.4mm, reservation surplus 5-10mm, face work B,
Ensure the balance of 2-5mm of height dimension, inside and outside 2 × 45 ° of rounded corner on end face B；
(2) the bore hole stage：Referring to Fig. 3, a kind of processing technique for blocking pivoting support structure member without cingulum of the present invention
Outer ring bore hole stage schematic diagram.Any end face of workpiece after will be rough turn is placed on equal height cushion block, and dress pressing plate is compressed, and makes datum level
A is parallel with boring table face, adjusts drill bit so as to which centrage is perpendicular with cylindrical peak tangent line, according to processing drawing pair
Workpiece plugging hole 3 carries out Boring, and during processing, the boring cutter amount of feeding is 0.5-0.8mm/r, and boring bar rotating speed is 15-25r/min,
The combination cooling oil that aperture surface spray is made up of 75% vegetable oil and 25% kerosene, control surface roughness≤Ra6.3,
Aperture is machined to surplus 0.7-1.0mm by perpendicularity≤0.1mm/m, then is reamer by bit change-over, is reamed using reamer, is protected
Made allowance 0.1-0.15mm；
(3) drill and ream the stage：Referring to Fig. 4, a kind of processing technique for blocking pivoting support structure member without cingulum of the present invention
Outer ring drill and ream stage schematic diagram.Workpiece non-referenced face is placed on Drilling machines bench equal height cushion block, is compressed with dress pressing plate, filling
Plugging block, control plugging block should not expose or be absorbed in, and blocking centrage is caused upper surface, and center line of bit is moved to workpiece
Hole reference circle is blocked with upper surface on the intersection point of centrage, is first carried out taper pin-hole 4 with drill bit and is processed, first with the drill bit of Φ 10mm
Drill through, secondly with 2/3 hole depth of drill bit counterboring of Φ 10.5mm, then with 1/3 hole depth of drill bit counterboring of Φ 11, after being drilled, change reamer again
Fraising, retains 0.5-0.9mm surpluses, taper 1:50；
(4) half smart car stages：Referring to Fig. 5, a kind of processing work for blocking pivoting support structure member without cingulum of the present invention
Half smart car stage of the outer ring schematic diagram of skill.
Half smart car I-stage：Datum level A is placed on equal height cushion block, clamping cylindrical 2, corrects cylindrical 2 bounces≤0.25mm,
And compressed at cylindrical 2 with four groups of pressing plates, according to turning process drawing, endoporus 1 is machined, be machined to drawing requirement chi
It is very little, with circular knife car raceway 5, retain surplus 0.1-0.2mm, the oil groove 6 that radius is that R depth is d is cut in track centre line position,
Pressing plate is laid down again, to end face B Vehicle Processing 1-2mm, 2 × 45 ° of end chamfer；
Half smart car II stage：Non-referenced face is placed on equal height cushion block, correction endoporus 1 is beated≤0.15mm, uses pressing plate pressure
Tightly, according to turning process drawing, car seal groove 7, then pressing plate is changed to into the inside successively, 2 machine to foreign round, be machined to
Drawing requirement size, surface roughness requirements Ra3.2, then cylindrical 2 are clamped with claw, pressing plate is unclamped, driving is entered to datum level A and is added
Work 1-2mm, surface roughness requirements Ra3.2,2 × 45 ° of end chamfer；
(5) I heat treatment stages：Mid frequency induction hardening heat treatment, hardened depth are carried out to raceway 5, plugging hole 3 and taper pin-hole 4
Degree >=3mm；
(6) tempering stage：After mid frequency induction hardening, 4h is tempered at 200 DEG C, control hardness for 55-62HRC；
(7) the smart car stage：Referring to Fig. 6, a kind of processing technique for blocking pivoting support structure member without cingulum of the present invention
Outer ring smart car stage schematic diagram.Datum level A is placed on isometry block, correction endoporus 1 is beated≤0.05mm, is compressed with pressing plate,
With circular knife car raceway 5 to drawing requirement size, control surface roughness is Ra1.6, then clamps cylindrical 2 with claw, unclamps pressure
Plate, machines to datum level A and end face B respectively, height dimension H is machined to drawing requirement size, and end face surface is coarse
Degree requires Ra3.2,2 × 45 ° of end chamfer；
(8) ream the stage：Referring to Fig. 7, by the clamping workpiece after smart car to drilling machine, to plugging hole 3 with reamer finish ream to
Drawing requirement size；
(9) the wire cutting stage：Referring to Fig. 7, workpiece end face B is lain on the work top of wire cutting board, with thousand points
Table is corrected, and pressing plate is compressed, and is worn silk to knife, is carried out linear cutter to taper pin-hole 4, be machined to drawing requirement size, taper 1:50；
(10) II heat treatment stages：The plugging hole 3 of workpiece and taper pin-hole 4 are carried out into Carburization Treatment, then mid frequency induction hardening,
Depth of hardening zone >=3mm, is tempered 4h after quenching at 200 DEG C, controls hardness for 60-65HRC；
(11) rule the stage：Referring to Fig. 8, after measuring the overall dimensions of part, rule and positioned according to drawing regulation
Operation；
(12) drilling stage：Referring to Fig. 8, end face B is placed on radial drill workbench equal-height block, is compressed with pressing plate, it is ensured that
Workpiece steadily without tilting, center line of bit alignment hole center is carried out boring installing hole 8, and 8 diameter error of control installing hole is not
More than 0.05mm；
(13) assembling stage：Part is carried out trial assembly to match somebody with somebody, preliminary clearance is measured, according to data and trial assembly clearance is calculated, is clamped
Work carries out last grinding again, allots final drawing regulation clearance；
(14) put in storage：Respective record is detected and is made to pivoting support outer ring part, demagnetized, clean, packed and provide
The quality certification, warehouse-in；
Wherein, when clamping cylindrical 2 with claw in the half smart car stage and smart car stage, claw will with cylindrical 2 contact position
Lived with copper sheet pad, and each claw clamping stress will equilibrium.
A kind of processing technique for blocking pivoting support structure member without cingulum, when outer ring processes, leaves during by half smart car
Surplus, after raceway 5,4I heat treatment of plugging hole 3 and taper pin-hole, is machined to drawing requirement size, then to plugging hole 3 and
Taper pin-hole 4 carries out II heat treatment, improves the diffusion layer organization of plugging hole 3 and taper pin-hole 4, and crystal grain thinning further improves which hard
Degree so that hardness of the surface hardness of plugging hole 3 and taper pin-hole 4 more than raceway 5 so as to more wear-resisting and stress, it is to avoid
During long time running, because plugging hole 3 and taper pin-hole 4 wear and tear and deform, and device block part fit clearance is caused to become big, rolling
Kinetoplast runs to and has some setbacks herein, causes fluctuation of service and the destruction of device, and this processing technique of the invention causes the device can
With the operation of long-time stable, the work efficiency of device is substantially increased.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent or improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of processing technique for blocking pivoting support structure member without cingulum, its technical process includes：Rough turn, bore hole, drill and ream,
Half smart car, heat treatment, tempering, smart car, line, drilling and assembling, it is characterised in that described structure member is outer ring, described
The procedure of processing of outer ring is as follows：
(1) the rough turn stage：
Rough turn I-stage：Clamping forging blank corrects endoporus bounce≤1.5mm to lathe, and end face run-out≤1.2mm, according to car
Art work sheet turning is cut, dimensional discrepancy control retains surplus 5-10mm in ± 0.8mm, and car datum level A, holding are shown in that light is intact
Fall into, inside and outside 2 × 45 ° of rounded corner on datum level A；
The rough turn II stages：To lathe, datum level A is adjacent to equal height cushion block to clamping forging blank, corrects cylindrical bounce≤0.8mm,
According to turning process drawing in-car hole, dimensional discrepancy is controlled in ± 0.4mm, retain surplus 5-10mm, face work B, it is ensured that height
Size surplus are 2-5mm, inside and outside 2 × 45 ° of rounded corner on end face B；
(2) the bore hole stage：Any end face of workpiece after will be rough turn is placed on equal height cushion block, and dress pressing plate is compressed, and makes datum level A and boring
Bed work top is parallel, adjusts drill bit so as to which centrage is perpendicular with cylindrical peak tangent line, stifled to workpiece according to processing drawing
Consent carries out Boring, and aperture is machined to surplus 0.7-1.0mm, then is reamer by bit change-over, is reamed using reamer, is protected
Made allowance 0.1-0.15mm；
(3) drill and ream the stage：Workpiece non-referenced face is placed on Drilling machines bench equal height cushion block, is compressed with dress pressing plate, filling blocking
Block, control plugging block should not expose or be absorbed in, and blocking centrage is caused upper surface, and center line of bit is moved to workpiece hole point
Degree circle is blocked on the intersection point of centrage with upper surface, first carries out taper pin hole machined with drill bit, changes reamer fraising again, retain after being drilled
0.5-0.9mm surpluses, taper 1:50；
(4) half smart car stages：
Half smart car I-stage：Datum level A is placed on equal height cushion block, clamping is cylindrical, corrects cylindrical bounce≤0.25mm, and use four
Group pressing plate is compressed at cylindrical place, according to turning process drawing, endoporus is machined, is machined to drawing requirement size, with circle
Blade car raceway, retains surplus 0.1-0.2mm, cuts the oil groove that radius is that R depth is d in track centre line position, then lays down pressure
Plate, to end face B Vehicle Processing 1-2mm, 2 × 45 ° of end chamfer；
Half smart car II stage：Non-referenced face is placed on equal height cushion block, endoporus bounce≤0.15mm is corrected, is compressed with pressing plate, root
According to turning process drawing, car seal groove, then pressing plate is changed to into the inside successively, machined to foreign round, being machined to drawing will
Size, surface roughness requirements Ra3.2 is asked, then clamps cylindrical, release pressing plate with claw, 1- is machined to datum level A
2mm, surface roughness requirements Ra3.2,2 × 45 ° of end chamfer；
(5) I heat treatment stages：Mid frequency induction hardening heat treatment, depth of hardening zone >=3mm is carried out to raceway, plugging hole and taper pin-hole；
(6) tempering stage：After mid frequency induction hardening, 4h is tempered at 200 DEG C, control hardness for 55-62HRC；
(7) the smart car stage：Datum level A is placed on isometry block, endoporus bounce≤0.05mm is corrected, is compressed with pressing plate, is used dise knife
Piece car raceway is Ra1.6 to drawing requirement size, control surface roughness, then clamps cylindrical, release pressing plate with claw, right respectively
Datum level A and end face B are machined, and height dimension H is machined to drawing requirement size, end face surface roughness requirements
Ra3.2,2 × 45 ° of end chamfer；
(8) ream the stage：By on the clamping workpiece after smart car to drilling machine, plugging hole reamer is finish reamed to drawing requirement size；
(9) the wire cutting stage：Workpiece end face B is lain on the work top of wire cutting board, is corrected with amesdial, pressing plate pressure
Tightly, silk is worn to knife, linear cutter is carried out to taper pin-hole, be machined to drawing requirement size, taper 1:50；
(10) II heat treatment stages：The plugging hole and taper pin-hole of workpiece are carried out into Carburization Treatment, then mid frequency induction hardening, quench-hardened case
Depth >=3mm, is tempered 4h after quenching at 200 DEG C, controls hardness for 60-65HRC；
(11) rule the stage：After the overall dimensions of measurement part, rule and positioning process according to drawing regulation；
(12) drilling stage：End face B is placed on radial drill workbench equal-height block, is compressed with pressing plate, it is ensured that the steady nothing of workpiece is stuck up
It is dynamic, center line of bit alignment hole center is carried out into brill installing hole, control installing hole diameter error is not more than 0.05mm；
(13) assembling stage：Part is carried out trial assembly to match somebody with somebody, preliminary clearance is measured, according to data and trial assembly clearance is calculated, pincers worker is again
Last grinding is carried out, final drawing regulation clearance is allotted；
(14) put in storage：Respective record is detected and is made to part, is demagnetized, cleans, packed and provided the quality certification, warehouse-in.
2. it is according to claim 1 it is a kind of without cingulum block pivoting support structure member processing technique, it is characterised in that：
The forging blank material trademark is 50Mn.
3. it is according to claim 1 it is a kind of without cingulum block pivoting support structure member processing technique, it is characterised in that：
During the bore hole stage process, in the combination cooling oil that aperture surface spray is made up of 75% vegetable oil and 25% kerosene,
Control surface roughness≤Ra6.3, perpendicularity≤0.1mm/m.
4. it is according to claim 1 it is a kind of without cingulum block pivoting support structure member processing technique, it is characterised in that：
The bore hole stage, the boring cutter amount of feeding are 0.5-0.8mm/r, and boring bar rotating speed is 15-25r/min.
5. it is according to claim 1 it is a kind of without cingulum block pivoting support structure member processing technique, it is characterised in that：
The drilling in the stage that drills and reams, is drilled through with the drill bit of Φ 10mm first, secondly with 2/3 hole depth of drill bit counterboring of Φ 10.5mm, then
With 1/3 hole depth of drill bit counterboring of Φ 11.
6. it is according to claim 1 it is a kind of without cingulum block pivoting support structure member processing technique, it is characterised in that：
Outer bowlder is clamped in the half smart car stage and smart car stage with claw, claw is lived with cylindrical contact position copper sheet pad, and respectively
Individual claw clamping stress will equilibrium.
7. one kind blocks pivoting support without cingulum, it is characterised in that：Possesses the structure by the arbitrary record of claim 1-6
The outer ring that the processing technique of part is formed.
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| CN201610852814.7A CN106514137B (en) | 2016-09-26 | 2016-09-26 | A kind of processing technology and bearing of anodontia band blocking pivoting support structure member |
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| CN107262786A (en) * | 2017-08-10 | 2017-10-20 | 扬州市实力五金工具工贸有限公司 | A kind of band stops section step drill and its manufacture method |
| CN110900125A (en) * | 2019-11-20 | 2020-03-24 | 马鞍山市博创回转支承有限公司 | Machining method of slewing bearing |
| CN112108886A (en) * | 2020-09-03 | 2020-12-22 | 太仓坤泰精密模具有限公司 | Plate part post-treatment production line and production process thereof |
| CN113118708A (en) * | 2021-03-29 | 2021-07-16 | 安徽海立汽车零部件有限公司 | Automobile clutch part machining process |
| CN114669962A (en) * | 2022-03-07 | 2022-06-28 | 徐州万达回转支承有限公司 | Machining process for inner ring and outer ring of grinding gear of slewing bearing |
| CN115302192A (en) * | 2022-07-08 | 2022-11-08 | 索特传动设备有限公司 | Slewing bearing machining method, slewing bearing and engineering machinery |
| CN115401427A (en) * | 2022-10-12 | 2022-11-29 | 中航动力株洲航空零部件制造有限公司 | Machining process for inner cavity of spacing ring |
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| CN107262786A (en) * | 2017-08-10 | 2017-10-20 | 扬州市实力五金工具工贸有限公司 | A kind of band stops section step drill and its manufacture method |
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| CN112108886A (en) * | 2020-09-03 | 2020-12-22 | 太仓坤泰精密模具有限公司 | Plate part post-treatment production line and production process thereof |
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| CN114669962A (en) * | 2022-03-07 | 2022-06-28 | 徐州万达回转支承有限公司 | Machining process for inner ring and outer ring of grinding gear of slewing bearing |
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| CN115401427A (en) * | 2022-10-12 | 2022-11-29 | 中航动力株洲航空零部件制造有限公司 | Machining process for inner cavity of spacing ring |
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| CN106514137B (en) | 2018-11-23 |
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