CN108145048A - A kind of bearing ring numerical control looping mill rolling automatic molding process - Google Patents
A kind of bearing ring numerical control looping mill rolling automatic molding process Download PDFInfo
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- CN108145048A CN108145048A CN201711313840.3A CN201711313840A CN108145048A CN 108145048 A CN108145048 A CN 108145048A CN 201711313840 A CN201711313840 A CN 201711313840A CN 108145048 A CN108145048 A CN 108145048A
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- cutting
- bearing ring
- hollow forging
- looping mill
- mill rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
- B21H1/12—Making articles shaped as bodies of revolution rings of restricted axial length rings for ball or roller bearings
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Abstract
The present invention provides a kind of bearing ring numerical control looping mill rolling automatic molding process, aim to solve the problem that the technical issues of traditional bearing lasso hot rolling technology is carried out with separating and cutting process substep, it includes blanking procedure, heating process, perforation process, input process, process and output process are cut in hot rolling, in process is cut in hot rolling, it is provided with cutting part rotating Vortex synchronous with the looping mill rolling unit of three groups of circumference array setting of forming part by using spiral on excircle, to completing, the hollow forging after perforating is directly synchronous to carry out hot rolling cutting, hot rolling is completed, cutting also synchronously completes, change traditional bearing ring hot rolling technology, incorporate manufacturing procedure, reduce the process time of single bearing ring, improve working efficiency, and bearing ring embryo material error after molding is small, precision is high.
Description
Technical field
The present invention relates to bearing ring processing technique field more particularly to a kind of bearing ring numerical control looping mill rolling automatic mouldings
Technique.
Background technology
Existing bearing ring processing, usually there are three types of processing methods：One kind is centainly added with going out greatly than finished product lasso
The bearing forging of work flow by special bearing turning machine, carries out the Vehicle Processing of multiple working procedure, required set is made successively
Circle.This processing method is exactly simple and specialized, but the equipment number of units needed is more.Into bearing holder (housing, cover) from bearing forging to vehicle
Circle, the iron filings that general turning is gone will account for the 30-40% of total weight.So traditional turning processing method, not only process is more, adds
It is long between working hour, and consumption of raw material is more, and stock utilization only has 45% or so.Another kind is, using the processing of cold rolling to model
Method processes bearing ring using cold rolling to model at present, and the most common mode of blank mode of use is still forging, this side
Formula is mainly that the material of 10%-20% has been saved than traditional turning processing method, but because forging flow is big, needs to carry out thick
Vehicle Processing, finishing processing, process are more.Although improving stock utilization, nor best processing method.It is also a kind of
It is that bearing ring is processed using hot-roll forming, using round steel into shape sawing, hollow forging is formed into eleven punch 11 to round steel after sawing,
Hollow forging is recycled to be cut using hot rolling, last finishing processing, this processing method is mainly that procedure of processing is processed compared with above two
Mode procedure of processing is less slightly, and the utilization rate of rapidoprint reaches more than 95%, is the main processing method of existing bearing ring.
A kind of preparation method of bearing ring is disclosed in the Chinese invention patent of Patent No. CN101718305A and is set
It is standby, the processing method of bearing ring hot rolling cutting is just referred to, is included the following steps：(1) by sheared blank to defined ruler
It is very little, it is sent into；(2) after heating unit makes its temperature reach predetermined value；(3) it is sent into punch and hollow forging is made, then；(4) by hollow forging
640-700 DEG C is cooled to, is transferred at random；(5) hot rolling cutting apparatus, and pass through hot-roll forming set in hot rolling cutting apparatus
And rolling cutting device, continuous work process bearing ring blank；(6) axis is transferred to after carrying out bead to bearing ring blank
Finishing is held, but it need to carry out temperature control to the temperature of hollow forging, make the reduction of its temperature after bar is completed to perforate and forms hollow forging
Carry out hot rolling cutting after to 640-700 DEG C again, long processing time, working efficiency is low；And its hot rolling cutting apparatus is the two of combination
Complete equipment after carrying out hot rolling to hollow forging using equipment of hot rolling, recycles rolling cut setting to cut hollow forging, can not synchronize
Realize that hot rolling works asynchronously with cutting.
Have again, a kind of hot finished steel pipe and precision are disclosed in the Chinese invention patent of Patent No. CN104400325A
The process of cold rolling bearing ring first, carries out hot finished steel pipe process：Round steel is put into electric furnace routinely standard
Heating, subsequently into poling process, round steel moves forward under the effect of external force, meanwhile, the movement of poling mandril and round steel
Direction is on the contrary, under external force, across round steel center, be made hollow billet, and routinely standard completes poling process；Manufactured
In a state that hollow billet temperature reduces completely not yet, hot-rolled pipe process is subsequently entered；Mandrel is penetrated in hollow billet hole, meanwhile, it will
Hollow billet is moved into roll, and routinely standard is rolled, using residual temperature of the round steel after electric furnace heats, in this way by 40-60
Second, with regard to machine-shaping hot finished steel pipe；Then, routinely standard is straightened hot finished steel pipe after carrying out spheroidizing, so as to be made
Meet the processing dedicated hot finished steel pipe of bearing ring, be ready for next process, although it is realized without temperature control, directly
Hot rolling is carried out using residual temperature after poling, but it can not synchronously complete cutting work in the hot rolling, need to additionally be cut
Process, time-consuming, and it is big to produce component error.
Invention content
The purpose of the present invention is in view of the deficiencies of the prior art, provide a kind of bearing ring numerical control looping mill rolling automatically into
Type technique is provided with the looping mill rolling list of three groups of circumference array setting of cutting part and forming part by using spiral on excircle
The synchronous rotating Vortex of member, the hollow forging after perforating to completion, which directly synchronizes, carries out hot rolling cutting, and hot rolling is completed, and is cut and has also been synchronized
Into, change traditional bearing ring hot rolling technology, solve hot rolling with cutting process it is synchronouss carry out the technical issues of, merging
Manufacturing procedure reduces the process time of single bearing ring, improves working efficiency, and bearing ring embryo material after molding misses
Difference is small, and precision is high.
To achieve the above object, the present invention provides following technical solution：
A kind of bearing ring numerical control looping mill rolling automatic molding process, including：
Step 1, blanking procedure, by cutting equipment by bar stock saw cutting to predetermined size；
Bar after cutting is input in heating furnace and is heated according to conventional criteria, made by step 2, heating process
Bar temperature is heated to predetermined value；
Step 3, perforation process export the bar after heating out of heating furnace, are sent into punch into eleven punch 11, shape
Into hollow forging；
Step 4 inputs process, and the hollow forging that is formed, which is directly inputted to bearing ring numerical control ring and rolls into type, after bar perforation sets
In standby shaping channel；
Step 5, hot rolling cutting process, be placed in hollow forging in shaping channel by bearing ring numerical control ring roll former into
The rotation of type component drives its automatic constant speed transmission, and is synchronized and realized to hollow forging progress by molding assembly in transmit process
Preliminary hot rolling cutting, makes its decile be shaped to several bearing ring forming rings；
Step 6 exports process, and the bearing ring forming ring in the step 5 export out of shaping channel to be passed through before
It is bearing ring embryo material that the molding assembly, which carries out secondary hot rolling cutting, and the rotation for passing through molding assembly drive its by this into
The output terminal of type channel one by one, continuously exports, and the bearing ring embryo material after output is shaped to bearing ring through finishing.
As an improvement, in the step 5 and step 6, hollow forging carries out preliminary hot rolling cutting and is cut with secondary hot rolling successively
When, the molding assembly is synchronized forms annular groove to the outer circumference surface of the bearing ring forming ring and bearing ring embryo material.
As an improvement, in the step 3, the hollow forging is formed after bar perforation, the residual temperature of the hollow forging is 1000-1500
℃。
As an improvement, in the step 5, the molding assembly includes three groups of looping mill rolling lists that circumferentially array arrangement is set
Member, be formed in the middle part of the molding assembly for hollow forging to be processed by shaping channel, the axis of the shaping channel and three groups
The axis of looping mill rolling unit is mutually arranged in parallel, and the outer wall of hollow forging is equidistantly contacted with three groups of looping mill rolling units.
As an improvement, in the step 5, after the hollow forging molding channel, slitter face and the looping mill rolling
Array circle is arranged concentrically where unit.
As an improvement, the looping mill rolling unit includes roll, on the outer circumference surface of the roll projection in isometric helix shape along institute
It states the arrangement of hollow forging direction of transfer and is provided with cutting part and forming part, and the forming part is located in cutting part described in two adjacent rings
Portion.
As an improvement, the screw pitch of the cutting part and forming part is equal to the width i of the bearing ring embryo material.
As an improvement, the vertical range edge of the end of the cutting part on the looping mill rolling unit to the looping mill rolling unit axis should
The hand of spiral of cutting part gradually increases, which is in turn divided into the first cutting area and the second cutting along its hand of spiral
Area, second cutting area are located at the discharge end of shaping channel, and the projection of the cutting part at the shaping channel discharge end away from
Meet between h1 and the wall thickness d of the hollow forging：h1≥d；
During preliminary hot rolling cutting, it is described in first cutting area that hot rolling cutting work is carried out to the hollow forging
Cutting part, the end of the cutting part is in planar, and when secondary hot rolling is cut, hot rolling cutting work is carried out to the hollow forging is
The end of the cutting part in second cutting area is in sharp knife shape.
As an improvement, the projection distance h2 of the forming part meets with the waste thickness of pipe wall d：H2=1/3d.
As an improvement, in the step 4, the cutting part of the hollow forging as described in three groups on looping mill rolling unit with it is described
Forming part spiral rotating drives traction to be conveyed, and hollow forging conveying amount of feeding V=4mm/s.
(1) present invention is provided with three groups of circumference array setting of cutting part and forming part by using spiral on excircle
Looping mill rolling unit synchronize rotating Vortex, the hollow forging after perforating is directly synchronous to carry out hot rolling cutting to completing, and hot-roll forming has worked
Into cutting work also synchronously completes, and changes traditional bearing ring hot rolling technology, realizes hollow forging hot-roll forming and cutting
Work merges the synchronous process time for carrying out, reducing single bearing ring, improves working efficiency, and bearing ring after molding
Embryo material error is small, and precision is high；
(2) present invention is incrementally set the height of cutting part along the conveying direction of hollow forging, gradually when setting cutting part
Deepen the cutting to waste thickness of pipe wall, cutting part is avoided to cause hollow forging deformation to hollow forging excessive extrusion, and at shaft end at least
The outer end face for having two circle cutting parts is set for angle, is carried out stage cutting to hollow forging, is avoided molding bearing ring embryo material
Cut place avoids overlap, influences the following process of bearing ring embryo material；
(3) present invention is when setting forming part, after forming part in the middle part of bearing ring forming ring to completing shaping work,
Subsequent forming part is supported the annular groove section on bearing ring forming ring, avoids cutting part when being cut, should
Power is concentrated in annular groove section, leads to annular groove section deformation after molding；
(4) present invention coordinates the spiral set on its outer surface using the roll of synchronous rotary when setting looping mill rolling unit
The cutting part of shape carries out screw conveying with forming part to hollow forging, makes hollow forging auto-feed, without additionally setting conveying power, makes
The hollow forging amount of feeding is consistent with the spiral variable quantity of forming part with cutting part, improves machining accuracy；
In conclusion the present invention has the advantages that process time is few, and mismachining tolerance is small, and working efficiency is high, it is particularly suitable for
The processing technique field of bearing ring.
Description of the drawings
For the clearer technical solution for illustrating the embodiment of the present invention, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings discussed below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is processing process schematic diagram of the present invention
Fig. 2 is positive structure diagram of the present invention；
Fig. 3 is side structure schematic view of the present invention；
Fig. 4 is schematic cross-sectional view at E-E in Fig. 2；
Fig. 5 is enlarged structure schematic diagram at A in Fig. 4；
Fig. 6 is looping mill rolling cellular construction schematic diagram of the present invention；
Fig. 7 is enlarged structure schematic diagram at B in Fig. 6；
Fig. 8 is enlarged structure schematic diagram at C in Fig. 6；
Fig. 9 is enlarged structure schematic diagram at D in Fig. 6；
Figure 10 is bearing ring embryo material schematic cross-sectional view of the present invention；
Figure 11 is enlarged structure schematic diagram at F in Fig. 6；
Figure 12 is turbine and self-aligning bearing cross section structure schematic diagram；
Figure 13 is hollow forging stress diagram of the present invention；
Figure 14 is hollow forging cutting part contact point schematic diagram of the present invention；
Figure 15 touches schematic diagram for hollow forging forming part of the present invention.
Specific embodiment
The technical solution in the embodiment of the present invention is clearly and completely illustrated below in conjunction with the accompanying drawings.
Embodiment 1：
Embodiment is illustrated referring to the drawings, embodiments illustrated below is not to the hair recorded in claim
Bright content plays any restriction effect, in addition, the full content of the composition represented by example below is not limited to as claim
Necessary to the solution of recorded invention.
As shown in Figure 1, a kind of bearing ring numerical control looping mill rolling automatic molding process, including：
Step 1, blanking procedure, by cutting equipment by bar stock saw cutting to predetermined size；
Bar after cutting is input in heating furnace and is heated according to conventional criteria, made by step 2, heating process
Bar temperature is heated to predetermined value；
Step 3, perforation process export the bar after heating out of heating furnace, are sent into punch into eleven punch 11, shape
Into hollow forging 3；
Step 4, inputs process, and the hollow forging 3 formed after bar perforation is directly inputted to bearing ring numerical control ring and rolls into type
In the shaping channel 22 of equipment；
Step 5, hot rolling cutting process, is placed in hollow forging 3 in shaping channel 22 and rolls former by bearing ring numerical control ring
The rotation of molding assembly 2 drive its automatic constant speed transmission, and synchronize and realize to the hollow forging by molding assembly in transmit process
3 carry out preliminary hot rolling cutting, its decile is made to be shaped to several bearing ring forming rings 31；
Step 6 exports process, and the bearing ring forming ring 31 in the step 5 is out of shaping channel 22 before output
It is bearing ring embryo material 4 to carry out secondary hot rolling cutting by the molding assembly, and the rotation for passing through molding assembly drive its by
The output terminal of the shaping channel 22 one by one, continuously exports, and the bearing ring embryo material 4 after output is shaped to bearing holder (housing, cover) through finishing
Circle.
Wherein, in the step 2, the temperature after rod-like material heating is 1200-1700 DEG C, in the step 3, bar
The hollow forging 3 is formed after perforation, the residual temperature of the hollow forging 3 is 1000-1500 DEG C, and traditional bearing ring processing technology is completed
After bar perforation, need to regulate and control the residual temperature of hollow forging, temperature made to be reduced to 600 DEG C or so, carry out hot-rolled process just now,
Long processing time.
Wherein, in the step 5 and step 6, when hollow forging 3 carries out preliminary hot rolling cutting with secondary hot rolling cutting successively,
The molding assembly 2 is synchronized forms annular groove to the outer circumference surface of the bearing ring forming ring 31 and bearing ring embryo material 4
41。
It should be noted that the molding assembly 2 synchronizes pair while hot rolling cutting process is carried out to the hollow forging 3
The outer circumference surface of hollow forging 3 carries out the extrusion forming process of annular groove 41, and traditional bearing ring processing is to form bearing
After lasso embryo material 4, then extrusion forming annular groove 41 is carried out on bearing ring embryo material 4.
Further, in the step 5, the molding assembly 2 includes three groups of looping mill rollings that circumferentially array arrangement is set
Unit 21, the middle part of the molding assembly 2 be formed with for hollow forging 3 to be processed by shaping channel 22, the shaping channel 22
The axis of axis and three groups of looping mill rolling units 21 is mutually arranged in parallel, and the outer wall of hollow forging 3 is equidistant with three groups of looping mill rolling units 21
Contact.
Further, in the step 5, after the 3 molding channel 22 of hollow forging, slitter face with it is described
21 place array circle of looping mill rolling unit is arranged concentrically.
It is formed it should be noted that the shaping channel 22 is surround by three groups of looping mill rolling units 21, and the shaping channel 22
Outer diameter gradually reduces along the conveying direction of the hollow forging 3, and then after hollow forging 3 is input in shaping channel 22, due to ring
The rotation of unit 21 and the extruding to hollow forging 3 are rolled, hollow forging 3 is driven to convey automatically.
As a preferred embodiment, the looping mill rolling unit includes roll 210, on the outer circumference surface of the roll 210
Projection is provided with cutting part 212 and forming part 213, and the forming part in isometric helix shape along 3 direction of transfer of hollow forging arrangement
213 are located at the middle part of cutting part 212 described in two adjacent rings.
Further, the screw pitch of the cutting part 212 and forming part 213 is equal to the width of the bearing ring embryo material 4
i。
It should be noted that cutting part 212 carries out hollow forging 3 preliminary hot rolling cutting, make the famine being located in shaping channel 2
3 decile of pipe is shaped to several bearing ring forming rings 31, and cutting part 212 carries out hollow forging 3 secondary hot rolling cutting later, makes axis
Bearing ring forming ring 31 is cut into the self-forming channel 22 of bearing ring embryo material 4 one by one, orderly and exports, and in cutting part
When 212 progress tentatively cut work with secondary hot rolling, forming part 213 is synchronized to the outer circumference surface of bearing ring forming ring 31
Middle part forms annular groove 41.
It illustrates further, one bearing ring embryo material of cutting formation between the cutting part 212 of front and rear two adjacent rings
4, therefore, the screw pitch of cutting part 212 is equal to the width i of a bearing ring embryo material 4, and because of forming part 213 in bearing ring
The middle part of embryo material 4 presses to form a groove 41, therefore its screw pitch is also equal to the width i of a bearing ring embryo material 4.
As a preferred embodiment, the end of the cutting part 212 on the looping mill rolling unit 21 is to the looping mill rolling unit
The vertical range of 21 axis gradually increases along the hand of spiral of the cutting part 212, the cutting part 212 along its hand of spiral successively
The first cutting area 212a and the second cutting area 212b are divided into, second cutting area 212b is located at the discharge end of shaping channel 22
Place, and be located at full between the projection distance h1 of cutting part 212 at 22 discharge end of shaping channel and the wall thickness d of the hollow forging 3
Foot：h1≥d；
During preliminary hot rolling cutting, it is described in the first cutting area 212a that hot rolling cutting is carried out to the hollow forging 3
Cutting part 212, the end of the cutting part 212 is in planar, and when secondary hot rolling is cut, hot rolling cutting is carried out to the hollow forging 3
End for the cutting part 212 in the second cutting area 212b is in sharp knife shape.
It should be noted that when cutting part 212 cuts hollow forging 3, using the cutting side gradually deepened
Formula, therefore the projection distance of cutting part 212 is incrementally increased along the conveying direction of hollow forging 3, and the projection distance h1 of maximum and institute
The wall thickness for stating hollow forging 3 meets：H1 >=d using the cutting mode gradually deepened, can reduce extruding journey of the cutting part to hollow forging
4 end face of bearing ring embryo material is smooth after degree avoids hollow forging deformation, while guarantee is cut to the greatest extent.
It further illustrates, when the bearing ring forming ring 31 to 3 end of hollow forging is thoroughly cut, using rank
The mode of section cutting, by setting the first cutting area 212a and the second cutting area 212b, by the cutting of the first cutting area 212a
The end in portion 212 is in planar, and the end of the cutting part 212 of the second cutting area 212b utilizes planar cutting in sharp knife shape
Portion 212 squeezes hollow forging 3, and hollow forging 3 is cut using the cutting part 212 of sharp knife shape, by repeatedly cutting, coordinates cutting part
212 height change, the cutting of implementation phase formula ensure the flatness of the end face of the bearing ring embryo material 4 after cutting, reduce and fly
Side and the presence of burr.
As a preferred embodiment, the projection distance h2 of the forming part 213 expires with the 3 wall thickness d of hollow forging
Foot：H2=1/3d.
It should be noted that when forming part 213 to hollow forging 3 squeeze and forms annular groove 41 in the middle part of bearing ring,
Forming part 213 may be used the processing method that similar 212 height of cutting part is gradually deepened and carry out extrusion forming.
It further illustrates, the forming part 213 at 210 head end of roll, which to hollow forging 3 squeeze, forms bearing ring
After the recessed portion at 31 middle part of forming ring, subsequent forming part 213 is supported the recessed portion, avoids cutting part 212 to hollow forging
During 3 are cut, stress is caused to be concentrated in recessed portion, causes deformation.
As a preferred embodiment, in the step 4, the hollow forging 3 is as described in three groups on looping mill rolling unit 21
The cutting part 212 and 213 spiral rotating of forming part traction is driven to be conveyed, and the hollow forging 3 conveying amount of feeding V
=4mm/s.
It should be noted that while hollow forging 3 is cut into hot rolling, hollow forging 3 drives spiral to input by looping mill rolling unit 21,
The amount of feeding of hollow forging 3 is just adapted to the face advance of cutting part 212 and forming part 213, although hollow forging 3 is constantly forward
Conveying, still, cutting part 212 and forming part 213 also change in spiral, and the cutting part 212 on three groups of looping mill rolling units 21 is with appointing
The cutting contact point 2120 of the either end facet of the one bearing ring forming ring 31 is respectively positioned in same vertical section, three groups of looping mill rollings
The formation of contact point 2130 of forming part 213 and the bearing ring forming ring 31 is in a vertical section on unit 21.
Embodiment 2：
A kind of bearing ring numerical control ring that the embodiment of the present invention two is described in detail with reference to Figure of description 1 rolls former.
As shown in Fig. 2, Fig. 3, Fig. 4 and Figure 13, a kind of bearing ring numerical control looping mill rolling shaping equipment, including：
Body 1；
Molding assembly 2, the molding assembly 2 are rotatablely installed on the body 1, including three groups circumferentially array arrange
The looping mill rolling unit 21 of cloth setting, the middle part of the molding assembly 2 be formed with for hollow forging 3 to be processed by shaping channel 22, should
The axis of shaping channel 22 and the axis of three groups of looping mill rolling units 21 are mutually arranged in parallel, and the outer wall of hollow forging 3 with three groups of rings
Unit 21 is rolled equidistantly to contact；It arranges and sets along its direction of transfer in isometric helix shape on the outer circumference surface of the looping mill rolling unit 21
There is cutting part 212, the outer diameter of shaping channel 22 is gradually reduced along the hand of spiral of the cutting part 212；
Support component 5, the support component 5 are installed on the both sides of the shaping channel 22, and three groups of looping mill rolling units 21
Both ends are rotatablely installed respectively in the support component 5, which is set to the shaping channel 22 including three groups and inputs
The support unit 51 at end and three groups of aligning units 52 for being set to 22 output terminal of shaping channel；And
Drive component 6, the driving component 6 include three axis synchronism output speed reducers 61, the three axis synchronism output speed reducer
61 drive the synchronized rotation in the same direction of three groups of looping mill rolling units 21 by the kind of drive of sprocket wheel chain, and synchronous drive be located at it is described into
Hollow forging 3 in type channel 22 automatically delivers, and along the axis direction realization of the shaping channel 22 in the discharge end of shaping channel 22
Realize hot rolling ring cutting into multiple bearing ring embryo materials 4.
It further illustrates, while hollow forging 3 carries out hot rolling with cutting, hollow forging 3 drives spiral by looping mill rolling unit 21
Input, the amount of feeding of hollow forging 3 is just adapted to respectively with the face advance of cutting part 212, although hollow forging 3 is constantly being fed forward,
But cutting part 212 also changes in spiral.
As shown in figure 14, also, the hollow forging 3 is located at part in shaping channel 22, by three groups of looping mill rolling units 21
Cutting part 212 its decile is made to be shaped to several bearing ring forming rings 31, the cutting part 212 on three groups of looping mill rolling units 21 with
The cutting contact point 2120 of the either end facet of any bearing ring forming ring 31 is respectively positioned on same pitch circle；Ensure three groups
When cutting part 212 on looping mill rolling unit 21 processes hollow forging 3, be molded into cricoid bearing ring embryo material 4, otherwise, without into
Type is helical form or twisted shape.
It is worth noting that, drive component 6 is using conventional driving motor, thus in attached drawing is illustrated not to its into
Row reference numeral, drive component 6 are cut while the synchronized rotation in the same direction of three groups of looping mill rolling units 21 is driven by what spiral was set
It cuts the axis direction of hollow forging 3 along the shaping channel 22 that 212 synchronous drive of portion is located in the shaping channel 22 and realizes automatic pass
It send, and is described according to applicant, hollow forging 3 is 4mm/s by the speed that 21 screw traction of looping mill rolling unit conveys, and eliminates extra power
Use, it is ensured that hollow forging 3 convey horizontal accuracy, will not by external force act on change, and pass through 21 band of looping mill rolling unit
Dynamic hollow forging 3 is fed, and the amount of feeding and 212 face advance of cutting part for just making hollow forging 3 are consistent, and looping mill rolling unit 21 is made to exist just
Looping mill rolling is formed on the excircle of hollow forging 3, and the width of bearing ring embryo material 4 cut out every time is consistent, and processes bearing
The error of lasso embryo material 4 is small, and precision is high.
It is emphasized that the feed speed V of hollow forging 3 is the rotation that looping mill rolling unit 21 can be adjusted by drive component 6
What speed was adjusted.
As shown in Fig. 6, Fig. 7, Fig. 8 and Figure 10, wherein, the looping mill rolling unit 21 includes：
Roll 210, the roll 210 are rotatablely installed by shaft 211 in the support component 5, the cutting part 212
It is convexly equipped on the outer wall of the roll 210, which is in turn divided into the first cutting area 212a and along its hand of spiral
Two cutting area 212b, second cutting area 212b are located at the discharge end of shaping channel 22, and positioned at 22 discharge end of shaping channel
Meet between the projection distance h1 of the cutting part 212 at place and the wall thickness d of the hollow forging 3：h1≥d.
Further, the end of the cutting part 212 of the first cutting area 212a is in planar；Second cutting area
The end of the cutting part 212 of 212b is in sharp knife shape.
Further, the screw pitch of the cutting part 212 is equal to the width i of the bearing ring embryo material 4.
It should be noted that when cutting part 212 cuts hollow forging 3, using the cutting side gradually deepened
Formula, therefore the projection distance of cutting part 212 is incrementally increased along the conveying direction of hollow forging 3, and the projection distance h1 of maximum and institute
The wall thickness for stating hollow forging 3 meets：H1 >=d using the cutting mode gradually deepened, can reduce extruding journey of the cutting part to hollow forging
4 end face of bearing ring embryo material is smooth after degree avoids hollow forging deformation, while guarantee is cut to the greatest extent.
It further illustrates, when the bearing ring forming ring 31 to 3 end of hollow forging is thoroughly cut, using rank
The mode of section cutting, by setting the first cutting area 212a and the second cutting area 212b, by the cutting of the first cutting area 212a
The end in portion 212 is in planar, and the end of the cutting part 212 of the second cutting area 212b utilizes planar cutting in sharp knife shape
Portion 212 squeezes hollow forging 3, and hollow forging 3 is cut using the cutting part 212 of sharp knife shape, by repeatedly cutting, coordinates cutting part
212 height change, the cutting of implementation phase formula ensure the flatness of the end face of the bearing ring embryo material 4 after cutting, reduce and fly
Side and the presence of burr.
It illustrates further, one bearing ring embryo material of cutting formation between the cutting part 212 of front and rear two adjacent rings
4, therefore, the screw pitch of cutting part 212 is equal to the width i of a bearing ring embryo material 4.
As shown in 11 and Figure 12, as a preferred embodiment, the aligning unit 52 can be to the looping mill rolling unit
21 carry out the eccentric adjustment of 0.1~5mm, including：
Mounting base 521；
Self-aligning bearing 522, the self-aligning bearing 522 are set in the mounting base 521, with 211 sets of the shaft
It connects, and it is coaxially disposed with the shaft 211；
Turbine 523, the turbine 523 are sheathed on the outside of the self-aligning bearing 522, eccentric with the self-aligning bearing 522
Setting, and its eccentric distance is D1=0.1~5mm；And
Worm screw 524, the worm screw 524 are equipped in the side of the turbine 523.
It should be noted that the three groups of looping mill rolling units 21 machined according to design parameter, in installation process, completely
It is disposably to be installed in place, but is machined inevitably there are mismachining tolerance, therefore logical aligning unit 52 is to looping mill rolling list
Member 21 is adjusted, and the center of three groups of looping mill rolling units 21 is made to be located on same pitch circle.
Furtherly illustrating, the operation principle of aligning unit 52 is, after in three groups of looping mill rolling units 21, installation is complete,
By measuring, detect the deviation of every group of looping mill rolling unit 21, later by rotary worm 524, rotate turbine 523, revolving
During turning, due to self-aligning bearing 522 and 523 eccentric setting of turbine, self-aligning bearing shifts, and then adjusts looping mill rolling list
Member 21, makes three groups of looping mill rolling units 21 be on same pitch circle.
It illustrates further, after three groups of looping mill rolling units 21 is made to be on same section of circle, carries out test-run a machine work,
During test-run a machine, it is found that hollow forging 3 is not cut by looping mill rolling unit, can adjust aligning unit 52 synchronizes three groups of looping mill rolling units 21
It shrinks inwards, increases contact depth of the cutting part 212 with hollow forging 3, and after being worn in the work a period of time of cutting part 212,
It synchronizes by aligning unit 52 three groups of looping mill rolling units 21 to shrink inwards, increase between cutting part 212 and hollow forging 3
Cutting force extends the service life of cutting part 212.
As shown in Fig. 5, Fig. 7, Fig. 9 and Figure 10, a kind of bearing ring numerical control looping mill rolling shaping equipment, the looping mill rolling list
Member 21 further includes：
Forming part 213,213 spiral of forming part are set on the outer circumference surface of the roll 210, are set to phase
The middle part of the two circle cutting part 212 of neighbour, and its screw pitch is equal with the screw pitch of the cutting part 212.
It should be noted that while cutting part 212 carries out hot rolling cutting to hollow forging, forming part 213 is synchronized to bearing
The outer circumference surface of lasso forming ring 31 is squeezed, and makes to synchronize the recessed of one circle of formation in the middle part of the outer circumference surface of bearing ring embryo material 4
Slot 41.
It illustrates further, since cutting part 212 and forming part 213 are fixedly disposed in shaft 211, and
The one circle forming part 213 of middle part setting of cutting part 212 described in two adjacent rings, because of the ring on molding bearing ring embryo material 4
Shape recessed portion can ensure deviation will not occur, the annular recess is extremely at the middle part of 4 excircle of bearing ring embryo material always
The distance of 4 both sides of the face of bearing ring embryo material is always consistent, and precision is high, for other finishing such as subsequent end face polishing
Process saves working hour, and commonly known, and bearing belongs to Precision Machining part, how to improve the machining accuracy of bearing parts and is
One technical barrier.
As shown in figure 8, wherein, the direction of transfer of the hollow forging 3 is consistent with the hand of spiral of the cutting part 212.
Further, the screw pitch of the forming part 213 is equal to the width i of the bearing ring embryo material 4.
As shown in figure 15, further, the forming part 213 on three groups of looping mill rolling units 21 and any bearing ring
The formation of contact point 2130 of the outer circumference surface of forming ring 31 is respectively positioned on same pitch circle.
It should be noted that cutting forms a bearing ring embryo material 4 between the cutting part 212 of front and rear two adjacent rings, because
This, the screw pitch of cutting part 212 is equal to the width i of a bearing ring embryo material 4, and because of forming part 213 in bearing ring embryo material
4 middle part presses to form a groove 41, therefore its screw pitch is also equal to the width i of a bearing ring embryo material 4.
Further illustrate, on three groups of looping mill rolling units 21 forming part 213 and the molding of the bearing ring forming ring 31 connect
Contact 2130 is on a pitch circle, in this way, can ensure that the forming part 213 on three groups of looping mill rolling units 21 processes hollow forging 3
When, cricoid groove 41 can be just molded into, otherwise, then can be shaped to helical form or twisted shape.
It illustrates further, while hollow forging 3 carries out hot rolling cutting, hollow forging 3 drives spiral by looping mill rolling unit 21
Input, the amount of feeding of hollow forging 3 is just adapted to the face advance of forming part 213, although hollow forging 3 is constantly being fed forward,
It is that forming part 213 also changes in spiral, molding of three groups of looping mill rolling units 21 to any one bearing ring forming ring 31 on hollow forging
Contact point is also remained on same pitch circle.
As shown in figure 9, the also, projection distance h2 of the forming part 213 and 3 wall thickness d of hollow forging satisfactions：H2=1/
3d。
It should be noted that when forming part 213 to hollow forging 3 squeeze and forms annular groove 41 in the middle part of bearing ring,
Forming part 213 may be used the processing method that similar 212 height of cutting part is gradually deepened and carry out extrusion forming.
It further illustrates, the forming part 213 at 210 head end of roll, which to hollow forging 3 squeeze, forms bearing ring
After the recessed portion at 31 middle part of forming ring, subsequent forming part 213 is supported the recessed portion, avoids cutting part 212 to hollow forging
During 3 are cut, stress is caused to be concentrated in recessed portion, causes deformation.
The course of work is as follows：
First, the rodlike raw material of strip are cut, obtains the rod-like material of specific length；Secondly, heating furnace is utilized
Rod-like material after cutting is heated, the temperature of rod-like material is made to reach 1200-1700 DEG C；Again, using punch to heating after
Rod-like material into eleven punch 11 obtain hollow forging 3；Later, hollow forging 3 is inserted into the shaping channel that bearing ring numerical control ring rolls former
In 22, since the cutting part 212 and the helical feed of forming part 213, hollow forging 3 that spiral is set on looping mill rolling unit 21 continually enter
Into shaping channel 22, hollow forging 3 is constantly formed one by one by the extruding of the cutting part 212 on roll 311 and forming part 213
Bearing ring embryo material 4 is continuously exported from the output terminal of shaping channel 22.
In the present invention, it is to be understood that：Term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness
Degree ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instructions such as needle ", " counterclockwise " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplified description rather than instruction or imply signified equipment or the specific side that element must have
Position, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that indicating or implying opposite weight
The property wanted or the implicit quantity for indicating indicated technical characteristic.Therefore, define " first ", the feature of " second " can be bright
Show or implicitly include one or more this feature.In description of the invention, " multiple " are meant that two or two
More than a, unless otherwise specifically defined.
The above only invents preferable specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of bearing ring numerical control looping mill rolling automatic molding process, which is characterized in that including：
Step 1, blanking procedure, by cutting equipment by bar stock saw cutting to predetermined size；
Bar after cutting is input in heating furnace and is heated according to conventional criteria by step 2, heating process, makes bar temperature
Degree is heated to predetermined value；
Step 3, perforation process export the bar after heating out of heating furnace, are sent into punch into eleven punch 11, are formed waste
It manages (3)；
Step 4, inputs process, and the hollow forging (3) formed after bar perforation is directly inputted to bearing ring numerical control ring and rolls former
Shaping channel (22) in；
Step 5, hot rolling cutting process, is placed in shaping channel (22) interior hollow forging (3) and rolls former by bearing ring numerical control ring
The rotation of molding assembly (2) drives its automatic constant speed transmission, and is synchronized and realized to the hollow forging by molding assembly in transmit process
(3) preliminary hot rolling cutting is carried out, its decile is made to be shaped to several bearing ring forming rings (31)；
Step 6 exports process, and the bearing ring forming ring (31) in the step 5 is out of shaping channel (22) before output
It is bearing ring embryo material (4), and the rotation for passing through molding assembly drives it to carry out secondary hot rolling cutting by the molding assembly
It one by one, is continuously exported by the output terminal of the shaping channel (22), the bearing ring embryo material (4) after output is shaped to axis through finishing
Bearing ring.
A kind of 2. bearing ring numerical control looping mill rolling automatic molding process as described in claim 1, which is characterized in that the step 5
In step 6, hollow forging (3) carries out preliminary hot rolling cutting successively when being cut with secondary hot rolling, and the molding assembly (2) synchronizes pair
The outer circumference surface of the bearing ring forming ring (31) and bearing ring embryo material (4) forms annular groove (41).
A kind of 3. bearing ring numerical control looping mill rolling automatic molding process as described in claim 1, which is characterized in that the step 3
In, the hollow forging (3) is formed after bar perforation, the residual temperature of the hollow forging (3) is 1000-1500 DEG C.
A kind of 4. bearing ring numerical control looping mill rolling automatic molding process as described in claim 1, which is characterized in that the step 5
In, the molding assembly (2) includes the looping mill rolling units (21) of three groups of circumferentially array arrangement settings, in the molding assembly (2)
Portion be formed with for hollow forging to be processed (3) by shaping channel (22), the axis of the shaping channel (22) and three groups of looping mill rolling lists
The axis of first (21) is mutually arranged in parallel, and the outer wall of hollow forging (3) is equidistantly contacted with three groups of looping mill rolling units (21).
A kind of 5. bearing ring numerical control looping mill rolling automatic molding process as claimed in claim 4, which is characterized in that the step 5
In, after hollow forging (3) the molding channel (22), slitter face and array circle where the looping mill rolling unit (21) are concentric
Setting.
A kind of 6. bearing ring numerical control looping mill rolling automatic molding process as claimed in claim 4, which is characterized in that the looping mill rolling list
Member includes roll (210), on the outer circumference surface of the roll (210) projection in isometric helix shape along the hollow forging (3) direction of transfer
Arrangement is provided with cutting part (212) and forming part (213), and the forming part (213) is positioned at cutting part described in two adjacent rings (212)
Middle part.
A kind of 7. bearing ring numerical control looping mill rolling automatic molding process as claimed in claim 6, which is characterized in that the cutting part
(212) the width i of the bearing ring embryo material (4) is equal to the screw pitch of forming part (213).
A kind of 8. bearing ring numerical control looping mill rolling automatic molding process as claimed in claim 6, which is characterized in that the looping mill rolling list
The end of cutting part (212) on first (21) is to spiral shell of the vertical range along the cutting part (212) of looping mill rolling unit (21) axis
Rotation direction gradually increases, which is in turn divided into the first cutting area (212a) and the second cutting along its hand of spiral
Area (212b), second cutting area (212b) discharge at the discharge end of shaping channel (22), and positioned at shaping channel (22)
Meet between the projection distance h1 of cutting part (212) at end and the wall thickness d of the hollow forging (3)：h1≥d；
During preliminary hot rolling cutting, it is in first cutting area (212a) that hot rolling cutting work is carried out to the hollow forging (3)
The cutting part (212), the end of the cutting part (212) is in planar, and when secondary hot rolling is cut, the hollow forging (3) is carried out
Hot rolling cutting work is that the end of the cutting part (212) in second cutting area (212b) is in sharp knife shape.
A kind of 9. bearing ring numerical control looping mill rolling automatic molding process as claimed in claim 6, which is characterized in that the forming part
(213) the projection distance h2 and hollow forging (3) wall thickness d meets：H2=1/3d.
A kind of 10. bearing ring numerical control looping mill rolling automatic molding process as claimed in claim 6, which is characterized in that the step
In four, the cutting part (212) of the hollow forging (3) as described in three groups on looping mill rolling unit (21) and the forming part (213) spiral shell
Rotation rotation drives traction to be conveyed, and the hollow forging (3) conveying amount of feeding V=4mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711313840.3A CN108145048A (en) | 2017-12-12 | 2017-12-12 | A kind of bearing ring numerical control looping mill rolling automatic molding process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711313840.3A CN108145048A (en) | 2017-12-12 | 2017-12-12 | A kind of bearing ring numerical control looping mill rolling automatic molding process |
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| CN108145048A true CN108145048A (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113414331A (en) * | 2021-06-18 | 2021-09-21 | 临清宇联轴承科技有限公司 | Narrow series thin-wall large-diameter bearing ring two-in-one blank forming process |
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| DE657415C (en) * | 1935-01-28 | 1938-03-04 | Timken Roller Bearing Co | Process for the production of linked pre-work pieces |
| CN86202978U (en) * | 1986-05-03 | 1988-07-20 | 蔡恒明 | High rigid eccentric rolling mill |
| DE4415091C1 (en) * | 1994-04-29 | 1996-01-18 | Fritz Dr Feldmeier | Method and device for the continuous, non-cutting profiling cutting of tubular workpieces into individual rings that are identical to one another |
| DE19708473A1 (en) * | 1997-02-20 | 1998-08-27 | Mannesmann Ag | Device for non=cutting separation of individual rings from tubular workpiece |
| CN101718305A (en) * | 2009-12-14 | 2010-06-02 | 佛山市顺德区冠邦科技有限公司 | Method and equipment for manufacturing bearing ferrule |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE657415C (en) * | 1935-01-28 | 1938-03-04 | Timken Roller Bearing Co | Process for the production of linked pre-work pieces |
| CN86202978U (en) * | 1986-05-03 | 1988-07-20 | 蔡恒明 | High rigid eccentric rolling mill |
| DE4415091C1 (en) * | 1994-04-29 | 1996-01-18 | Fritz Dr Feldmeier | Method and device for the continuous, non-cutting profiling cutting of tubular workpieces into individual rings that are identical to one another |
| CN1058648C (en) * | 1994-04-29 | 2000-11-22 | 曼内斯曼股份公司 | Process and device for continuous, chipless separation of individual rings from tubular workpieces |
| DE19708473A1 (en) * | 1997-02-20 | 1998-08-27 | Mannesmann Ag | Device for non=cutting separation of individual rings from tubular workpiece |
| CN101718305A (en) * | 2009-12-14 | 2010-06-02 | 佛山市顺德区冠邦科技有限公司 | Method and equipment for manufacturing bearing ferrule |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113414331A (en) * | 2021-06-18 | 2021-09-21 | 临清宇联轴承科技有限公司 | Narrow series thin-wall large-diameter bearing ring two-in-one blank forming process |
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