CN109433892B - A kind of laterally three spinning roller Force balance control methods of spinning machine - Google Patents
A kind of laterally three spinning roller Force balance control methods of spinning machine Download PDFInfo
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- CN109433892B CN109433892B CN201811458872.7A CN201811458872A CN109433892B CN 109433892 B CN109433892 B CN 109433892B CN 201811458872 A CN201811458872 A CN 201811458872A CN 109433892 B CN109433892 B CN 109433892B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
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Abstract
The present invention provides a kind of laterally three spinning roller Force balance control methods of spinning machine, and the mistake between initial depression position and spinning roller including spinning roller is arranged is away from amount；The initial depression amount corrected time and drafts for determining spinning roller respectively correct the sampling period；After spinning roller is in place, the pressure data of spinning roller is acquired；It determines the track of third spinning roller, and determines spinning roller reference pressure value；In the initial depression amount corrected time of the first spinning roller, according to the pressure data and reference pressure value of the first spinning roller collected, first time correction is carried out to the drafts of the first spinning roller, each drafts correction sampling period is corrected the drafts of the first spinning roller later.The present invention is able to solve the method that three spinning roller transverse direction dynamic balances are controlled during rotary pressing processing, the present invention passes through the successive spinning force size for actively adjusting the first spinning roller and the second spinning roller, the radial displacement variable that simultaneously three spinning rollers of adjust automatically are calculated through digital control system, progressively reaches the purpose of the lateral Force balance control of three spinning rollers.
Description
Technical field
The present invention relates to metal pipe material pressure processing technology fields, and in particular to a kind of laterally three spinning roller power of spinning machine are flat
Weigh control method.
Background technique
Spin forming technique is approximate point contact, the unit high pressure using spinning roller and workpiece, sends out rapidoprint locally
A kind of pressure processing technology of raw plastic deformation, this forming technique have stock utilization height, processing performance to significantly improve, are applicable in
In high-intensitive difficult-to-deformation material processing, seamless revolving body hollow object overall processing the features such as.Wherein, three spinning roller shear spinnings are
One of major technique of mould pressing, have spinning tonnage is big, three spinning rollers can automatic centering, the features such as spinning precision is high, it is wide
It is general to be applied to Thin-wall cylindrical part, the mould pressing with outer modal circumferential stiffening rib and small-angle part.
Laterally three spinning roller dynamic balance technologies are always the target that spin forming technique is pursued, if it is automatic to be able to achieve spinning force
Detection and feedback function, innovation will be brought to spin forming technique, can greatly improve the precision and spinning machine of flow formed part
Service life etc..Currently, existing three spinning rollers shear spinning forming technique also cannot achieve the automatic detection of above-mentioned spinning force
And feedback function.
Summary of the invention
The purpose of the present invention is to provide a kind of laterally three spinning roller spinning forces of spinning machine to detect and balance automatically controlling party
Method, is able to solve the method that three spinning roller transverse direction dynamic balances are controlled during rotary pressing processing, and the present invention is revolved suitable for three spinning rollers
The stepped spinning processing technology of pressure, by successively actively adjusting the spinning force size of the first spinning roller and the second spinning roller, through numerical control system
Statistics is calculated and the radial displacement variable of three spinning rollers of adjust automatically, progressively reaches the mesh of the lateral Force balance control of three spinning rollers
's.
To achieve the goals above, the invention provides the following technical scheme:
A kind of laterally three spinning roller Force balance control methods of spinning machine, comprising:
The initial depression position of the first spinning roller, the second spinning roller and third spinning roller is respectively set, be respectively set the first spinning roller with
Mistake between second spinning roller, between the second spinning roller and third spinning roller is away from amount；
Determine initial depression amount corrected time and drafts the correction sampling period of the first spinning roller and the second spinning roller；
After spinning roller is in place, the pressure data of the first spinning roller, the second spinning roller and third spinning roller is acquired respectively；
It determines the track of third spinning roller, and determines spinning roller reference pressure value；
In the initial depression amount corrected time of the first spinning roller and the second spinning roller, revolved according to the first spinning roller collected and second
The pressure data and reference pressure value of wheel carry out first time correction simultaneously to the drafts of the first spinning roller and the second spinning roller, later
Each drafts correction sampling period is corrected the drafts of the first spinning roller and the second spinning roller simultaneously.
It is preferably, described to be respectively set in the laterally three spinning roller Force balance control methods of above-mentioned spinning machine
The initial depression position of first spinning roller, the second spinning roller and third spinning roller, is respectively set between the first spinning roller and the second spinning roller, second
Mistake between spinning roller and third spinning roller is away from amount, comprising:
It is required according to the wall thickness of flow formed part blank, the wall thickness of flow formed part product requires and the limit of material is thinned
Rate, spinning pass arrangement calculate wrong away from amount and length feed speed between the initial depression position of three spinning rollers, spinning roller；
Wherein, the initial depression position of the first spinning roller, the second spinning roller and third spinning roller is denoted as H respectively1、H2And H3, first
Mistake between spinning roller and the second spinning roller, between the second spinning roller and third spinning roller is denoted as S away from amount respectively1、S2, length feed speed note
For V.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, the determination first
The initial depression amount corrected time and drafts of spinning roller and the second spinning roller correct the sampling period, comprising:
After first spinning roller, the second spinning roller and third spinning roller reach initial depression position, select any time as first
The initial depression amount corrected time of spinning roller and the second spinning roller, is denoted as T1；
After the initial depression amount corrected time of first spinning roller and the second spinning roller, first experience correction duration t, then undergo school
It positive interval time △ t, determines the initial depression amount corrected time of secondary first spinning roller and the second spinning roller, is denoted as T2；
The drafts correction sampling period is denoted as △ T, △ T=t+ △ t；
Wherein, △ t > S/V, S ∈ max (S1, S2)；
△ T > (S1+S2)/V。
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, any time
Initial depression amount corrected time as the first spinning roller and the second spinning roller, comprising:
First spinning roller, the second spinning roller and third spinning roller are contacted with flow formed part, the initial depression position arrived separately at, and three
Spinning roller starts simultaneously at rotation, and along flow formed part direction axial feed, after the stroke L that advances, three spinning rollers enter surely
Determine working condition, start while acquiring three spinning roller transverse direction spinning force datas, the first spinning roller and the second spinning roller start to press for the first time
Lower amount correction, is denoted as moment T1。
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, the spinning roller is in place
Afterwards, the pressure data of the first spinning roller, the second spinning roller and third spinning roller is acquired respectively, comprising:
After first spinning roller, the second spinning roller and third spinning roller reach initial depression position, according to pressure data collected,
Spinning roller is carried out to the practical depressing position of the first spinning roller, the second spinning roller and third spinning roller to determine in place；
If any spinning roller does not reach initial depression position, re-starts spinning roller and determine in place；
If the first spinning roller, the second spinning roller and third spinning roller reach initial depression position, one is axially travelled along workpiece
After stroke L, three spinning rollers enter steady-working state, while acquiring the pressure of the first spinning roller, the second spinning roller and third spinning roller
Data.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, the determining third
The track of spinning roller, comprising:
According to the wall thickness of flow formed part product, pass through the track of systemic presupposition third spinning roller.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, the determining spinning roller
Reference pressure value, comprising:
Select the average pressure value of the first spinning roller, the second spinning roller and third spinning roller as spinning roller reference pressure value, i.e. p0=
(p1+p2+p3)/3, wherein p0For spinning roller reference pressure value, p1For the pressure data of the first spinning roller collected, p2To be acquired
The second spinning roller pressure data, p3For the pressure data of third spinning roller collected.
It is preferably, described to be revolved to first in the laterally three spinning roller Force balance control methods of above-mentioned spinning machine
The drafts of wheel and the second spinning roller carries out first time correction simultaneously, comprising:
First time judgement is carried out to the depressed state of the first spinning roller and the second spinning roller simultaneously；
First time school is carried out to the first spinning roller and the second spinning roller respectively according to the depressed state of the first spinning roller and the second spinning roller
Just；
Preferably, described at the same to the depressed state of the first spinning roller and the second spinning roller carry out first time judgement, comprising:
First time judgement is carried out to the depressed state of the first choosing wheel；
First time judgement is carried out to the depressed state of the second choosing wheel；
More preferably, the depressed state to the first choosing wheel carries out first time judgement, comprising:
Calculate the difference △ p between the pressure value of the first spinning roller and spinning roller reference pressure value1, wherein △ p1=p1-p0；
If △ p1< 0 determines that the first spinning roller is in under-voltage condition；
If △ p1> 0 determines that the first spinning roller is in overvoltage condition；
If △ p1=0, determine that the first spinning roller is in barotropic state；
More preferably, the depressed state to the second spinning roller carries out first time judgement, comprising:
Calculate the difference △ p between the pressure value of the second spinning roller and spinning roller reference pressure value2, wherein △ p2=p2-p0；
If △ p2< 0 determines that the second spinning roller is in under-voltage condition；
If △ p2> 0 determines that the second spinning roller is in overvoltage condition；
If △ p2=0, determine that the second spinning roller is in barotropic state.
It is preferably, described according to first in the laterally three spinning roller Force balance control methods of above-mentioned spinning machine
The depressed state of spinning roller and the second spinning roller carries out first time correction to the first spinning roller and the second spinning roller respectively, comprising:
First time correction is carried out to the first spinning roller according to the depressed state of the first spinning roller；
First time correction is carried out to the second spinning roller according to the depressed state of the second spinning roller；
Preferably, the depressed state according to the first spinning roller carries out first time correction to the first spinning roller, comprising:
According to the depressed state of the first spinning roller, change the depressing position of the first spinning roller, i.e., the depressing position of the first spinning roller by
Initial depression position H1Change into H1', enable △ H1=H1’-H1；
When first spinning roller is in under-voltage condition, △ H1> 0 increases the drafts of the first spinning roller,
When first spinning roller is in overvoltage condition, △ H1< 0 reduces the drafts of the first spinning roller,
When first spinning roller is in barotropic state, △ H1=0, the drafts variation of the first spinning roller is 0；
More preferably, the depressed state according to the second spinning roller carries out first time correction to the second spinning roller, comprising:
According to the depressed state of the second spinning roller, change the depressing position of the second spinning roller, i.e., the depressing position of the second spinning roller by
H2Change into H2', enable △ H2=H2’-H2；
When second spinning roller is in under-voltage condition, △ H2> 0 increases the drafts of the second spinning roller,
When second spinning roller is in overvoltage condition, △ H2< 0 reduces the drafts of the second spinning roller,
When second spinning roller is in barotropic state, △ H2=0, the drafts variation of the second spinning roller is 0.
It is preferably, described to be revolved to first in the laterally three spinning roller Force balance control methods of above-mentioned spinning machine
The drafts of wheel and the second spinning roller is carried out simultaneously after first time correction, further includes:
After first spinning roller and the second spinning roller carry out first time correction simultaneously, at interval of △ T, the first spinning roller, the are resurveyed
The pressure data of two spinning rollers and third spinning roller judges the depressed state of the first spinning roller and the second spinning roller, to the first spinning roller and second
Spinning roller is corrected simultaneously.
Compared with the immediate prior art, technical solution provided by the invention has following excellent effect:
1. the laterally three spinning roller spinning forces that the present invention can be realized three-wheel spinning machine detect automatically and feedback function control, greatly
Amplitude improves flow formed part precision, especially straightness, circularity precision；
2. the present invention can be realized the stress equalization of three-wheel spinning machine main shaft and spinning roller during rotary pressing processing, significantly
Improve the service life of spinning machine；
3. the present invention can automatic collection process data, form the database comprising material and technique, facilitate spinning work
Application of the skill in intelligence manufacture field.
4. the present invention can be realized process control of three-wheel spinning machine during rotary pressing processing, tied especially for complexity
The special-shaped cylindrical member of structure, forming quality is reliable, technical benefits, remarkable in economical benefits.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.Wherein:
Fig. 1 is the laterally three spinning roller Force balance control method flow formed parts processing of spinning machine provided by the embodiment of the present invention
Process schematic；
Fig. 2 is laterally three the first spinning rollers of spinning roller Force balance control method and the of spinning machine provided by the embodiment of the present invention
Two spinning roller period correction time schematic diagrames；
Fig. 3 is that the laterally three spinning roller Force balance control methods of spinning machine provided by the embodiment of the present invention adjust first simultaneously
Flow diagram in the case of spinning roller and the second spinning roller drafts；
Fig. 4 is laterally lateral three spinning rollers of three spinning roller Force balance control methods of spinning machine provided by the embodiment of the present invention
Schematic cross-section；
Fig. 5 is the component shaping of the laterally three spinning roller Force balance control methods of spinning machine provided by the embodiment of the present invention
The schematic diagram of forming angle between angle, spinning roller forming angle and spinning roller；
Fig. 6 is spinning roller calibration cycle composition schematic diagram.
Description of symbols:
The first spinning roller of 1-；The second spinning roller of 2-；3- third spinning roller；4- flow formed part.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application be can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention that must be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.Term used in the present invention " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in figure 4, the position of laterally three spinning rollers of spinning machine is located at 4 periphery of flow formed part shape in equilateral triangle
State distribution.
As shown in figure 5, the present invention is directed stepped spinning method, i.e. three spinning rollers along 4 direction of flow formed part to each other
At a certain distance, referred to as axial mistake is away from S1And S2, while being diametrically spaced from each other a distance again, referred to as radially
(transverse direction) mistake is away from △ h1With △ h2.Wherein, 4 forming angle of flow formed part is r, and three spinning roller forming angles are α, the first spinning roller 1 and the
Forming angle between two spinning rollers 2 is β1, the forming angle between the second spinning roller 2 and third spinning roller 3 is β2, meet tan β respectively1=△ h1/
S1, tan β2=△ h2/S2.Above-mentioned forming angle meets r < α < β1\β2It is the precondition of stepped spinning method.
As shown in fig. 6, Fig. 6 is spinning roller calibration cycle composition schematic diagram.T is that the first spinning roller 1 and the second spinning roller 2 are rectified in Fig. 6
Positive duration, △ t are certain correction of the first spinning roller 1 and the second spinning roller 2 and the preceding interval time once corrected, and △ t is from first
Start to occur after secondary correction；△ T is correction cycle.
As shown in Figures 1 to 6, according to an embodiment of the invention, providing a kind of laterally three spinning roller dynamic balances of spinning machine
Control method, comprising the following steps:
Step S1, the initial depression position of the first spinning roller 1, the second spinning roller 2 and third spinning roller 3 is respectively set, is respectively set
Mistake between first spinning roller 1 and the second spinning roller 2, between the second spinning roller 2 and third spinning roller 3 is away from amount.
Step S2, initial depression amount corrected time and the drafts school of the first spinning roller 1 and the second spinning roller 2 are determined respectively
The positive sampling period.
Step S3, after spinning roller is in place, the pressure data of the first spinning roller 1, the second spinning roller 2 and third spinning roller 3 is acquired respectively.
Step S4, it determines the track of third spinning roller 3, and determines spinning roller reference pressure value.
Step S5, in the initial depression amount corrected time of the first spinning roller 1 and the second spinning roller 2, according to the first rotation collected
The pressure data and reference pressure value of wheel 1 and the second spinning roller 2 carry out the to the drafts of the first spinning roller 1 and the second spinning roller 2 simultaneously
Primary correction, each drafts correction sampling period carries out school to the drafts of the first spinning roller 1 and the second spinning roller 2 simultaneously later
Just.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, step S1 is specifically wrapped
It includes:
It is required according to the wall thickness of 4 blank of flow formed part, the wall thickness of 4 product of flow formed part requires and the limit of material is thinned
Rate, spinning pass arrangement calculate wrong away from amount and length feed speed between the initial depression position of three spinning rollers, spinning roller；
Wherein, the initial depression position of the first spinning roller 1, the second spinning roller 2 and third spinning roller 3 is denoted as H respectively1、H2And H3,
Axial mistake between first spinning roller 1 and the second spinning roller 2, between the second spinning roller 2 and third spinning roller 3 is denoted as S away from amount respectively1、S2, indulge
V is denoted as to feed speed.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, step S2 is specifically wrapped
It includes:
After first spinning roller 1, the second spinning roller 2 and third spinning roller 3 reach initial depression position, select any time as
The initial depression amount corrected time of one spinning roller 1 and the second spinning roller 2, is denoted as T1；
After the initial depression amount corrected time of first spinning roller 1 and the second spinning roller 2, first experience correction duration t, then undergo
Interval time △ t is corrected, the initial depression amount corrected time of secondary first spinning roller 1 and the second spinning roller 2 is determined, is denoted as T2；
The drafts correction sampling period is denoted as △ T, △ T=t+ △ t；
Wherein, △ t > S/V, S ∈ max (S1, S2)；
△ T > (S1+S2)/V。
Entire spinning process, the rotation of main shaft driven mold, flow formed part 4 are mounted on mold, and mold drives flow formed part 4
Rotation, after spinning roller is contacted with flow formed part 4,4 active rotation of flow formed part, spinning roller passively rotates.The motion profile of each spinning roller
As follows: the first spinning roller 1 around one circle of the movement of flow formed part 4, forms curved-line thread path, the second spinning roller 2 rolls 1 rail of the first spinning roller first
Mark, third spinning roller 3 roll the curved-line thread path under the second spinning roller 2 residual, thinned flow formed part 4 regular in this way, to reach again
To the purpose of forming.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, the selection is any
Initial depression amount corrected time of the moment as the first spinning roller 1, comprising:
First spinning roller 1, the second spinning roller 2 and third spinning roller 3 play the ramp interface at rotation end with flow formed part 4 simultaneously, respectively arrive
The initial position that reaches is as shown in figure 5, three spinning rollers start simultaneously at rotation, and along 4 direction axial feed of flow formed part, advances one
After a stroke L, three spinning rollers enter steady-working state, start three spinning roller transverse direction spinning force datas of acquisition simultaneously, and first
Spinning roller 1 and the second spinning roller 2 start (moment T for the first time1-1) drafts correction.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, step S3 is specifically wrapped
It includes:
After first spinning roller 1, the second spinning roller 2 and third spinning roller 3 reach initial depression position, according to number pressure collected
According to carrying out spinning roller to the practical depressing position of the first spinning roller 1, the second spinning roller 2 and third spinning roller 3 and determine in place；
If any spinning roller does not reach initial depression position, re-starts spinning roller and determine in place；
It is axial along flow formed part 4 if the first spinning roller 1, the second spinning roller 2 and third spinning roller 3 reach initial depression position
After travelling a stroke L, three spinning rollers enter steady-working state, while acquiring the first spinning roller 1, the second spinning roller 2 and third
The pressure data of spinning roller 3.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, in step S4, determine
The track of third spinning roller 3, specifically includes the following steps:
According to the wall thickness of 4 product of flow formed part, pass through the track of systemic presupposition third spinning roller 3.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, in step S5, determine
Spinning roller reference pressure value, specifically includes the following steps:
Select the average pressure value of the first spinning roller 1, the second spinning roller 2 and third spinning roller 3 as spinning roller reference pressure value, i.e. p0
=(p1+p2+p3)/3, wherein p0For spinning roller reference pressure value, p1For the pressure data of the first spinning roller 1 collected, p2To be adopted
The pressure data of second spinning roller 2 of collection, p3For the pressure data of third spinning roller 3 collected.
It is preferably, described in step S5 in the laterally three spinning roller Force balance control methods of above-mentioned spinning machine
First time correction is carried out simultaneously to the drafts of the first spinning roller 1 and the second spinning roller 2, comprising:
Step S51, first time judgement is carried out to the depressed state of the first spinning roller 1 and the second spinning roller 2 simultaneously；
Step S52, according to the depressed state of the first spinning roller 1 and the second spinning roller 2 respectively to the first spinning roller 1 and the second spinning roller 2
Carry out first time correction.
Wherein, step S51 is specifically included:
Step S511, first time judgement is carried out to the depressed state of the first choosing wheel 1；
Step S512, first time judgement is carried out to the depressed state of the second choosing wheel 2.
Wherein, step S511 is specifically included:
Calculate the difference △ p between the pressure value and spinning roller reference pressure value of the first spinning roller 11, wherein △ p1=p1-p0；
If △ p1< 0 determines that the first spinning roller 1 is in under-voltage condition；
If △ p1> 0 determines that the first spinning roller 1 is in overvoltage condition；
If △ p1=0, determine that the first spinning roller 1 is in barotropic state.
Wherein, step S512 is specifically included:
Calculate the difference △ p between the pressure value and spinning roller reference pressure value of the second spinning roller 22, wherein △ p2=p2-p0；
If △ p2< 0 determines that the second spinning roller 2 is in under-voltage condition；
If △ p2> 0 determines that the second spinning roller 2 is in overvoltage condition；
If △ p2=0, determine that the second spinning roller 2 is in barotropic state.
In the laterally three spinning roller Force balance control methods of above-mentioned spinning machine, preferably, step S52 is specifically wrapped
It includes::
Step S521, first time correction is carried out to the first spinning roller 1 according to the depressed state of the first spinning roller 1；
Step S522, first time correction is carried out to the second spinning roller 2 according to the depressed state of the second spinning roller 2.
Wherein, step S521 is specifically included:
According to the depressed state of the first spinning roller 1, change the depressing position of the first spinning roller 1, the i.e. depressing position of the first spinning roller 1
By initial depression position H1Change into H1', enable △ H1=H1’-H1；
When first spinning roller 1 is in under-voltage condition, △ H1> 0 increases the drafts of the first spinning roller 1,
When first spinning roller 1 is in overvoltage condition, △ H1< 0 reduces the drafts of the first spinning roller 1,
When first spinning roller 1 is in barotropic state, △ H1=0, the drafts variation of the first spinning roller 1 is 0.
Wherein, step S522 is specifically included:
According to the depressed state of the second spinning roller 2, change the depressing position of the second spinning roller 2, the i.e. depressing position of the second spinning roller 2
By H2Change into H2', enable △ H2=H2’-H2；
When second spinning roller 2 is in under-voltage condition, △ H2> 0 increases the drafts of the second spinning roller 2,
When second spinning roller 2 is in overvoltage condition, △ H2< 0 reduces the drafts of the second spinning roller 2,
When second spinning roller 2 is in barotropic state, △ H2=0, the drafts variation of the second spinning roller 2 is 0.
It further include step S6 preferably in the laterally three spinning roller Force balance control methods of above-mentioned spinning machine,
Step S6 specifically:
After first spinning roller 1 and the second spinning roller 2 carry out first time correction simultaneously, at interval of △ T, resurvey the first spinning roller 1,
The pressure data of second spinning roller 2 and third spinning roller 3 judges the depressed state of the first spinning roller 1 and the second spinning roller 2, to the first spinning roller 1
It is corrected simultaneously with the second spinning roller 2.
When the method for the present invention is embodied, according to operating process below:
Step 1: input initial parameter:
(1) the initial depression position H of three spinning rollers is determined1、H2And H3, between the first spinning roller 1 and the second spinning roller 2 it is wrong away from
Measure S1, it is wrong away from amount S between the second spinning roller 2 and third spinning roller 32, spinning roller along 4 axial advancement of flow formed part length feed speed
Spend V；
Wall thickness according to spinning blank requires, the wall thickness of spinning product requires and limit attenuating rate, the spinning road of material
Inferior arrangement calculates wrong away from amount and length feed speed between the initial depression position of three spinning rollers, spinning roller.
(2) initial depression amount corrected time T1, second of the drafts timing of the first spinning roller 1 and the second spinning roller 2 are determined
It carves T2, correction duration t, correction interval time △ t and drafts and corrects sampling period △ T.Second of drafts timing
Carve the condition that T2 need to meet: △ T=t+ △ t, T2=T1+ △ T.
Mistake is away from related with length feed speed between drafts calibration cycle and spinning roller.Entire spinning process, main shaft band dynamic model
Tool rotation, mold drives flow formed part 4 to rotate, and after spinning roller is contacted with flow formed part 4,4 active rotation of flow formed part, spinning roller is passive
Rotation.The motion profile of each spinning roller is as follows: the first spinning roller 1 around one circle of the movement of flow formed part 4, forms curved-line thread path first, the
Two spinning rollers 2 roll 1 track of the first spinning roller, and third spinning roller 3 rolls the curved-line thread path under the second spinning roller 2 residual again, regular in this way
Thinned flow formed part 4, to achieve the purpose that forming.
First spinning roller 1, the second spinning roller 2 and third spinning roller 3 rise with flow formed part 4 contact at the slope for revolving end simultaneously, respectively
The initial position of arrival is as shown in figure 4, three spinning rollers start simultaneously at rotation, and along 4 direction axial feed of flow formed part, advance
After one stroke L, three spinning rollers enter steady-working state, start while acquiring three spinning roller transverse direction spinning force datas, the
One spinning roller 1 and the second spinning roller 2 start (moment T for the first time1-1) drafts correction.Then corrected by △ T periodic sampling.
After first spinning roller 1 and the second spinning roller 2 start the correction of first time drafts, first drafts is undergone to correct duration t,
Drafts is undergone to correct interval time △ t again, the lateral oil cylinder working-pressure sensing datas of acquisition process three, the first spinning roller 1 and the
Two spinning rollers 2 start second of (moment T2) drafts correction, then also correct by △ T periodic sampling.Wherein, 2 He of the second spinning roller
First spinning roller, 1 first time drafts correction time interval should meet △ t > S/V, S ∈ max (S1, S2), and the correction sampling period answers
Meet △ T > (S1+S2)/V.
Step 2: spinning roller is in place, the transverse pressure data of three spinning rollers are acquired:
A2.1, three spinning rollers reach specified depressing position H according to pre-set programs1、H2And H3；
A2.2, system carry out spinning roller to the practical depressing position of three spinning rollers according to the pressure signal of acquisition and determine in place；
The electronic automatic adjustment of the process belongs to observation process, and system 100% is adjusted in place, determines regulating time according to spinning roller away from spinning
4 surface distance of workpiece is related with spinning roller traverse feed speed；
If three A2.3, display spinning rollers arrived designated position, system determines that spinning roller is in place, continues three rotations of acquisition
Take turns pressure data.
Step 3: determining the depressed state of the first spinning roller 1 and the second spinning roller 2:
A3.1, criterion value p is determined0, criterion value p0The average pressure value p of three spinning rollers can be selected, it can also be with
Select the pressure value p of third spinning roller 3 (forming wheel)3, the average pressure value p of three spinning rollers is chosen herein as criterion value,
That is p0=p.
A3.2, the average pressure value p for calculating three spinning rollers,
P=(p1+p2+p3)/3,
Wherein, p1 is the pressure data of the first spinning roller 1 of system acquisition,
p2For the pressure data of the second spinning roller 2 of system acquisition,
p3For the pressure data of the third spinning roller 3 of system acquisition.
A3.3, difference △ p, the △ p=p for calculating the first spinning roller 1 and standard value1-p0,
A3.4, determine that judgment basis is as follows according to depressed state of the pressure difference value △ p to the first spinning roller 1,
If △ p < 0, determine that the first spinning roller 1 is in under-voltage condition,
If △ p > 0, determine that the first spinning roller 1 is in overvoltage condition,
If △ p=0, determine that the first spinning roller 1 is in barotropic state.
Step 4: determining the track of third spinning roller 3:
Third spinning roller 3 generally shapes and takes turns, and depressing position is true by systemic presupposition program depending on the requirement of the wall thickness of product
Fixed track requires wall thickness fixed product, does not adjust to the track of third spinning roller 3, i.e. the depressing position of third spinning roller 3
It is constant, the product that changes is required for wall thickness, the change in location of third spinning roller 3 is only determined by systemic presupposition program, not by the
One spinning roller, 1 track, which is adjusted, to be influenced.
Step 5: adjusting the first spinning roller 1 and the second spinning roller 2 simultaneously:
A5.1,3 track of third spinning roller determine on the basis of, system pressure according to locating for the first spinning roller 1 and the second spinning roller 2
Lower state, in moment T1Start the first time drafts correction to the first spinning roller 1 and the second spinning roller 2, corrects duration t and school
Normal pressure F is adjustable, and correction duration t generally takes 10~50ms, calibrating (base measuring) pressure F generally to take 2~10kN；
A5.2, after the correction of first time drafts, the first spinning roller 1 is from position H1Change to position H1', drafts is △ H1
=H1'-H1,
Wherein, H1To adjust the position that preceding first spinning roller 1 is depressed,
H1' is the position of the first spinning roller 1 pressure after adjustment,
When first spinning roller 1 is in under-voltage condition, △ H1> 0, system increase the drafts of the first spinning roller 1 automatically；
When first spinning roller 1 is in overvoltage condition, △ H1< 0, system reduce the drafts of the first spinning roller 1 automatically；
When first spinning roller 1 is in barotropic state, △ H1=0, the drafts variation of the first spinning roller 1 is 0；
After the correction of first time drafts, the second spinning roller 2 is from position H2Change to position H2', drafts is △ H2=H2'-
H2,
Wherein, H2To adjust preceding second spinning roller2The position of pressure,
H2' is the position of the second spinning roller 2 pressure after adjustment.
When second spinning roller 2 is in under-voltage condition, △ H2> 0, system increase the drafts of the second spinning roller 2 automatically；
When second spinning roller 2 is in overvoltage condition, △ H2< 0, system reduce the drafts of the second spinning roller 2 automatically；
When second spinning roller 2 is in barotropic state, △ H2=0, the drafts variation of the second spinning roller 2 is 0；
A5.3, the first spinning roller 1 and 2 depressing position of the second spinning roller are updated to H1' and H2', the first spinning roller 1 and the second spinning roller 2
Primary regulation terminates, and then presses period △ T sampling correcting.
Step 6: determining the track of the first spinning roller 1 and the second spinning roller 2:
Step third step is repeated to the 5th step, in TnMoment carries out drafts school to the first spinning roller 1 and the second spinning roller 2 simultaneously
Just, and determine TnThe depressed state of moment the first spinning roller 1 and the second spinning roller 2, final determining first spinning roller 1 and the second spinning roller 2
Track.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of laterally three spinning roller Force balance control methods of spinning machine characterized by comprising
The initial depression position of the first spinning roller, the second spinning roller and third spinning roller is respectively set, the first spinning roller and second is respectively set
Mistake between spinning roller, between the second spinning roller and third spinning roller is away from amount；
Determine initial depression amount corrected time and drafts the correction sampling period of the first spinning roller and the second spinning roller；
After spinning roller is in place, the pressure data of the first spinning roller, the second spinning roller and third spinning roller is acquired respectively；
It determines the track of third spinning roller, and determines spinning roller reference pressure value；
In the initial depression amount corrected time of the first spinning roller and the second spinning roller, according to the first spinning roller collected and the second spinning roller
Pressure data and reference pressure value carry out first time correction simultaneously to the drafts of the first spinning roller and the second spinning roller, later each
The drafts correction sampling period is corrected the drafts of the first spinning roller and the second spinning roller simultaneously.
2. the laterally three spinning roller Force balance control methods of spinning machine as described in claim 1, which is characterized in that described to set respectively
The initial depression position for setting the first spinning roller, the second spinning roller and third spinning roller, is respectively set between the first spinning roller and the second spinning roller,
Mistake between two spinning rollers and third spinning roller is away from amount, comprising:
It is required according to the wall thickness of flow formed part blank, the wall thickness of flow formed part product requires and the limit attenuating rate of material, rotation
Passage arrangement is pressed to calculate wrong away from amount and length feed speed between the initial depression position of three spinning rollers, spinning roller；
Wherein, the initial depression position of the first spinning roller, the second spinning roller and third spinning roller is denoted as H respectively1、H2And H3, the first spinning roller
And second between spinning roller, wrong between the second spinning roller and third spinning roller is denoted as S away from amount respectively1、S2, length feed speed is denoted as V.
3. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 2, which is characterized in that the determination the
The initial depression amount corrected time and drafts of one spinning roller and the second spinning roller correct the sampling period, comprising:
After first spinning roller, the second spinning roller and third spinning roller reach initial depression position, select any time as the first spinning roller
With the initial depression amount corrected time of the second spinning roller, it is denoted as T1；
After the initial depression amount corrected time of first spinning roller and the second spinning roller, first experience correction duration t, then undergo between correction
Every time △ t, determines the initial depression amount corrected time of secondary first spinning roller and the second spinning roller, be denoted as T2；
The drafts correction sampling period is denoted as △ T, △ T=t+ △ t；
Wherein, △ t > S/V, S ∈ max (S1, S2)；
△ T > (S1+S2)/V。
4. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 3, which is characterized in that when described any
Carve the initial depression amount corrected time as the first spinning roller and the second spinning roller, comprising:
First spinning roller, the second spinning roller and third spinning roller are contacted with flow formed part, the initial depression position arrived separately at, three spinning rollers
Rotation is started simultaneously at, and along flow formed part direction axial feed, after the stroke L that advances, three spinning rollers, which enter, stablizes work
Make state, starts while acquiring three spinning roller transverse direction spinning force datas, the first spinning roller and the second spinning roller start first time drafts
Correction, is denoted as moment T1。
5. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 3, which is characterized in that the spinning roller is just
Behind position, the pressure data of the first spinning roller, the second spinning roller and third spinning roller is acquired respectively, comprising:
After first spinning roller, the second spinning roller and third spinning roller reach initial depression position, according to pressure data collected, to
The practical depressing position of one spinning roller, the second spinning roller and third spinning roller carries out spinning roller and determines in place；
If any spinning roller does not reach initial depression position, re-starts spinning roller and determine in place；
If the first spinning roller, the second spinning roller and third spinning roller reach initial depression position, a stroke L is axially travelled along workpiece
Afterwards, three spinning rollers enter steady-working state, while acquiring the pressure data of the first spinning roller, the second spinning roller and third spinning roller.
6. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 3, which is characterized in that the determination the
The track of three spinning rollers, comprising:
According to the wall thickness of flow formed part product, pass through the track of systemic presupposition third spinning roller.
7. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 3, which is characterized in that the determining rotation
Take turns reference pressure value, comprising:
Select the average pressure value of the first spinning roller, the second spinning roller and third spinning roller as spinning roller reference pressure value, i.e. p0=(p1+p2
+p3)/3, wherein p0For spinning roller reference pressure value, p1For the pressure data of the first spinning roller collected, p2It is collected second
The pressure data of spinning roller, p3For the pressure data of third spinning roller collected.
8. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 7, which is characterized in that described to first
The drafts of spinning roller and the second spinning roller carries out first time correction simultaneously, comprising:
First time judgement is carried out to the depressed state of the first spinning roller and the second spinning roller simultaneously；
First time correction is carried out to the first spinning roller and the second spinning roller respectively according to the depressed state of the first spinning roller and the second spinning roller.
9. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 8, which is characterized in that described while right
The depressed state of first spinning roller and the second spinning roller carries out first time judgement, comprising:
First time judgement is carried out to the depressed state of the first spinning roller；
First time judgement is carried out to the depressed state of the second spinning roller.
10. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 9, which is characterized in that
The depressed state to the first spinning roller carries out first time judgement, comprising:
Calculate the difference △ p between the pressure value of the first spinning roller and spinning roller reference pressure value1, wherein △ p1=p1-p0；
If △ p1< 0 determines that the first spinning roller is in under-voltage condition；
If △ p1> 0 determines that the first spinning roller is in overvoltage condition；
If △ p1=0, determine that the first spinning roller is in barotropic state；
The depressed state to the second spinning roller carries out first time judgement, comprising:
Calculate the difference △ p between the pressure value of the second spinning roller and spinning roller reference pressure value2, wherein △ p2=p2-p0；
If △ p2< 0 determines that the second spinning roller is in under-voltage condition；
If △ p2> 0 determines that the second spinning roller is in overvoltage condition；
If △ p2=0, determine that the second spinning roller is in barotropic state.
11. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 8, which is characterized in that the basis
The depressed state of first spinning roller and the second spinning roller carries out first time correction to the first spinning roller and the second spinning roller respectively, comprising:
First time correction is carried out to the first spinning roller according to the depressed state of the first spinning roller；
First time correction is carried out to the second spinning roller according to the depressed state of the second spinning roller.
12. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 11, which is characterized in that
The depressed state according to the first spinning roller carries out first time correction to the first spinning roller, comprising:
According to the depressed state of the first spinning roller, change the depressing position of the first spinning roller, i.e., the depressing position of the first spinning roller is by initial
Depressing position H1Change into H1', enable △ H1=H1’-H1；
When first spinning roller is in under-voltage condition, △ H1> 0 increases the drafts of the first spinning roller,
When first spinning roller is in overvoltage condition, △ H1< 0 reduces the drafts of the first spinning roller,
When first spinning roller is in barotropic state, △ H1=0, the drafts variation of the first spinning roller is 0；
The depressed state according to the second spinning roller carries out first time correction to the second spinning roller, comprising:
According to the depressed state of the second spinning roller, change the depressing position of the second spinning roller, i.e., the depressing position of the second spinning roller is by H2Change
For H2', enable △ H2=H2’-H2；
When second spinning roller is in under-voltage condition, △ H2> 0 increases the drafts of the second spinning roller,
When second spinning roller is in overvoltage condition, △ H2< 0 reduces the drafts of the second spinning roller,
When second spinning roller is in barotropic state, △ H2=0, the drafts variation of the second spinning roller is 0.
13. the laterally three spinning roller Force balance control methods of spinning machine as claimed in claim 12, which is characterized in that described to the
The drafts of one spinning roller and the second spinning roller is carried out simultaneously after first time correction, further includes:
After first spinning roller and the second spinning roller carry out first time correction simultaneously, at interval of △ T, the first spinning roller, the second rotation are resurveyed
The pressure data of wheel and third spinning roller, judges the depressed state of the first spinning roller and the second spinning roller, to the first spinning roller and the second spinning roller
It is corrected simultaneously.
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| CN110605323A (en) * | 2019-10-07 | 2019-12-24 | 台州博翔旋压机床有限公司 | Multistage spinning wheel |
| CN112620460B (en) * | 2019-12-30 | 2023-03-24 | 航天特种材料及工艺技术研究所 | Force balance control method of three-spinning-wheel numerical control spinning machine |
| CN111672959A (en) * | 2020-06-22 | 2020-09-18 | 傲垦数控装备(苏州)有限公司 | Spinning pressure control method in spinning forming and control system applied by spinning pressure control method |
| CN112496135B (en) * | 2020-12-18 | 2023-03-21 | 航天特种材料及工艺技术研究所 | Force balance control method of three-spinning-wheel numerical control spinning machine |
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