CN108941270A - Free shape steel band material ring winding method and winding mechanism - Google Patents
Free shape steel band material ring winding method and winding mechanism Download PDFInfo
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- CN108941270A CN108941270A CN201810654481.6A CN201810654481A CN108941270A CN 108941270 A CN108941270 A CN 108941270A CN 201810654481 A CN201810654481 A CN 201810654481A CN 108941270 A CN108941270 A CN 108941270A
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- pinch roller
- molded line
- free shape
- steel band
- band material
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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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
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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
- B21D37/00—Tools as parts of machines covered by this subclass
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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
- B21D53/00—Making other particular articles
- B21D53/16—Making other particular articles rings, e.g. barrel hoops
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
The present invention relates to free shape steel band material ring winding method and winding mechanisms, are applied to production free shape steel piston ring.Free shape steel band material ring winding method, comprising: (i) depicts free shape molded line using free shape molded line tracing point；(ii) utilize steel band material on winding mechanism around the method for steel strip material ring；It is characterized in that: containing the 4th pinch roller in (iii) described winding mechanism；4th pinch roller is limited in locating plane and moves linearly；4th pinch roller linear movement amount is by step motor control；(iv) radius of curvature R of the extexine radius of curvature of the tangential iso-curvature bent steel strip with close-shaped molded line0It is equal；(v) free shape steel band material ring is generated by the variation of the 4th pinch roller linear movement amount of control.With time-consuming cumbersome radial molded line frock making is saved, accelerate the time of the online production of new varieties, the advantages that driving stepper motor is with optimal selection can be given by adjusting the 4th pinch roller installation site.
Description
Technical field
The present invention relates to free shape steel band material ring winding method and winding mechanisms, and it is living to be applied to production free shape steel
Plug ring.
Background technique
Free shape steel piston ring is exactly steel piston ring in a free state, it is the steel of a crack mouth
Ring, shape molded line are the plane curves close to ellipse of an only symmetrical center line；This symmetrical center line
Ring is divided into symmetrical two halves by opening point and opening face point on ring.
Steel piston ring is mounted on the annular groove on piston lateral surface Nei and uses；It is limited in use by cylinder wall,
Shape is the circular of closure.Steel piston ring is seamless between the intrinsic elasticity realization and cylinder wall for relying on itself in cylinder
Gap sealing.The circular steel piston ring of closure has in the contact pressure distribution in cylinder and between free shape steel piston ring
Corresponding relationship.In design, the freedom of steel piston ring is usually determined according to required contact pressure distribution pattern
Shape.
For the shape steel piston ring that gains freedom, makes in the technique of free shape steel piston ring and need first with steel
Strip coiling tapping strip ring.It around the steel band material ring produced is circular in prior art.Because circular molded line is apart from steel
Farther out, circular steel band material ring is sharp after need to suitably being corrected opening for the requirement of free shape molded line of the piston ring under open state
The sizing for completing radial irregular curve and axial plane in tooling with heat treatment process can just produce desired free form
Shape steel piston ring.Exist so producing free shape steel piston ring by the method for this coiling circular steel band material ring
Investment tooling is more, and processing flow is long, and new varieties produce online slow disadvantage.
It is desirable to produce free shape steel piston ring by the method for direct coiling free shape steel band material ring, whereby
Tooling investment is reduced, processing flow is shortened, fast implements new varieties production, significantly improving production efficiency.
Summary of the invention
The object of the present invention is to provide a kind of free shape steel of free shape steel band material ring needed for material coiling using steel band
Strip ring winding method.The present invention also provides a kind of winding mechanisms of coiling free shape steel band material ring.
The technical scheme is that (a) free shape steel band material ring winding method, comprising:
(i) free shape molded line is depicted using free shape molded line tracing point；The free shape molded line tracing point
It is corresponding with the close-shaped molded line tracing point on close-shaped molded line；
(ii) utilize steel band material on winding mechanism around the method for steel strip material ring；The winding mechanism contains positioned at same
Adjustable first pinch roller of mutual distance, the second pinch roller, third pinch roller in plane；It is described to utilize steel band material in winding mechanism
On around steel strip material ring method have by steel band material with constant rate of speed V0It is conveyed into the first pinch roller, through the second pinch roller and third pressure
The step of successive pressure of wheel generates tangential iso-curvature bent steel strip；
It is characterized in that:
(iii) the first pinch roller in the winding mechanism, the second pinch roller, contain the 4th pressure in plane locating for third pinch roller
Wheel；4th pinch roller is limited in locating plane and moves linearly；4th pinch roller linear movement amount is by step motor control；
(iv) radius of curvature of the extexine radius of curvature of the tangential iso-curvature bent steel strip with close-shaped molded line
R0It is equal；
(v) apply tangential iso-curvature bent steel strip through the 4th pinch roller by controlling the variation of the 4th pinch roller linear movement amount
Free shape steel band material ring is generated after pressure；And the shape phase of the extexine and free shape molded line of the free shape steel band material ring
Together.
(b) the free shape steel band material ring winding method described in a, it is characterized in that:
(i) free shape molded line tracing point shares 2N+1, and wherein N is integer；On free shape molded line it is two neighboring from
By shape molded line tracing point PnAnd Pn+1Between molded line length LnIt calculates as follows:
Wherein Rn+1For free shape molded line Pn+1Radius of curvature at point；
RnFor free shape molded line PnRadius of curvature at point；
θn+1、θnRespectively free shape molded line Pn+1Point, PnPolar angle of the point in polar coordinate system, unit are degree；The pole is sat
The pole of mark system is free shape molded line central point O, and polar axis is horizontal axis OX；
N=1,2,3 ..., 2N；
(ii) production corresponds to free shape molded line tracing point PnAnd Pn+1Between molded line length LnFree shape steel band
Expect the steel band material length L conveyed needed for lengthn' calculate as follows:
Wherein KlFor the feeding coefficient of steel band material；
T is the thickness of steel band material；
(iii) production corresponds to free shape molded line tracing point PnAnd Pn+1Between molded line length LnFree shape steel band
Expect that the 4th pinch roller is in coordinate X when lengthnPosition；4th pinch roller is from upper coordinate Xn-1Position is moved to coordinate XnThe straight line of position
Amount of movement Δ Xn=Xn-Xn-1Are as follows:
Wherein X0It is the 4th pinch roller initial position co-ordinates；
R0It is that the 4th pinch roller is in initial coordinate X0When steel band material with constant rate of speed V0It is conveyed into after the first pinch roller through the second pressure
The tangential iso-curvature bent steel strip radius of curvature that wheel, third pinch roller, the 4th pinch roller pressure generate.
KXFor the transport coefficient of the 4th pinch roller,
MaxX is the maximum value of the 4th pinch roller coordinate X；
MinX is the minimum value of the 4th pinch roller coordinate X；
MaxR is the maximum iso-curvature radius put on free shape molded line；
MinR is the minimum iso-curvature radius put on free shape molded line；
It (iv) is L from the 4th pinch roller output lengthn' steel band material required for time Tn=Ln′/V0, the 4th pressure during this
The location of wheel coordinate Xn:
Wherein tnFor time, 0≤tn≤Tn；
(v) Program Synchronization controls the location of the steel band material length exported from the 4th pinch roller and the 4th pinch roller coordinate；
(vi) when the steel band material length exported from the 4th pinch roller isLn' when output par, c is cut from steel band material under
Come.
A kind of winding mechanism of coiling free shape steel band material ring, can containing the mutual distance being in the same plane
The first pinch roller, the second pinch roller, third pinch roller adjusted；It is characterized in that in plane locating for the first pinch roller, the second pinch roller, third pinch roller
Also contain the 4th pinch roller；4th pinch roller is driven by stepper motor, is limited at for linear motion in locating plane.
The present invention has the advantage that
1, compared to using positive round steel band material ring being forced to open by tooling after steel band material elder generation coiling positive round steel band material ring or
Opened gap required for being closed to passes through the existing production that heat treatment shaping makes desired free shape steel piston ring again
Method, present invention eliminates time-consuming cumbersome radial molded line frock makings, need to only disappear simply by plane tooling and heat treatment
De-stress will can directly be shaped into desired free shape steel piston ring around the free shape steel band material ring produced.
2, it in meeting the different size piston ring market demand, also eliminates a kind of specification piston ring and needs to make a kind of phase
The existing way of radial molded line tooling is answered, instead corresponding molded line and programming, design and trial-production economic cost greatly drop
It is low, while also accelerating the time of the online production of new varieties.
3, free shape molded line is one to be similar to round irregular elliptic curve；In free shape molded line upper opening point
And the line of opening face point is ellipse short shaft.Ellipse short shaft divides free shape molded line with the perpendicular transverse of short axle
It is four sections, every section is all monodrome differentiable functions, and radius of curvature of the point on line segment from longitudinal end to every, short axle end incrementally increases.
In winding mechanism, the first pinch roller, the second pinch roller, third pinch roller, the 4th pinch roller first three pinch roller are chosen to be the songs such as production minimum
Rate radius curve steel band determines a round principle, rear i.e. the second pinch roller of three pinch rollers, third pinch roller, the 4th pressure according to 3 points
Wheel is also in compacting iso-curvature radius curve steel band, but the 4th pinch roller moves linearly in the plane locating for four pinch rollers, makes to suppress
The iso-curvature radius of curve steel band recurs variation in journey, is changed stepwise from the iso-curvature radius from long axis endpoint to short axle end
Iso-curvature radius at point.Positive round is drawn using these iso-curvature radiuses as radius, and is inscribed within them a bit.This point of contact can be with
It regards after first three pinch roller pressure any point on minimum iso-curvature radius steel band material circumference as, makees straight line fortune in the 4th pinch roller
During dynamic, the steel band of rate motions is waited to can change direction since this arbitrary point, and to be less than the equal songs at short axle endpoint
Certain Radius circumference of rate radius changes direction.Obviously, straight line is being drawn outside this point of contact, straight line is allowed to draw with these
Positive round intersection, each intersection point indicate the position of the 4th pinch roller.The meaning of this straight line is the 4th pinch roller tracks.Between adjoining nodes
Distance, indicate the distance that should move of the 4th pinch roller.If straight line is remote from this point of contact, this distance will be larger；And from this
When point of contact is close, this distance will be smaller.So the method for the present invention can be to the 4th pressure in winding mechanism by installation site
The driving stepper motor of wheel with optimal selection, make the 4th pinch roller glibly continuous moving around producing smooth freedom molded line steel band
Expect ring.
Detailed description of the invention
Attached drawing 1 is oneself established under coordinate system O-XY with the coordinate origin O to coincide with close-shaped molded line central point O '
By the corresponding relationship between shape molded line tracing point and close-shaped molded line tracing point.OX was the cross of free shape molded line short axle
To reference axis, OY was the longitudinal coordinate axle that coordinate origin is parallel to free shape molded line long axis.Coordinate origin O is also freely
Shape molded line central point O, O are also pole, and OX is also polar axis.
1 is close-shaped molded line in figure, and 2 be freedom molded line long axis, and 3 be free shape molded line.
Fig. 2 be the free shape molded line tracing point established with close-shaped molded line central point O ' under coordinate system O '-X ' Y ' with
Corresponding relationship between close-shaped molded line tracing point.O ' X ' is the transverse coordinate axis of close-shaped molded line (with the OX axis in Fig. 1
It is overlapped)；O ' Y ' is the longitudinal coordinate axle of close-shaped molded line (with the OY overlapping of axles in Fig. 2).
1 is close-shaped molded line in figure, and 3 be free shape molded line.
Fig. 3 is the structural schematic diagram of coiling free shape steel band material ring winding mechanism of the present invention.
5 be steel band material in figure, and 7 be the first pinch roller, and 9 be the second pinch roller, and 11 be third pinch roller, and 13 be that first three pinch roller is tangential etc.
Curvature bending steel band material section, 15 be the 4th pinch roller mounting base, and 17 be the 4th pinch roller, and 19 be the tangential iso-curvature bent steel of rear three pinch rollers
Strip section.
Fig. 4 is the 4th pinch roller of the invention signal for linear motion for continuously generating different tangential iso-curvature bent steel strips
Figure.
20 be maximum iso-curvature radius steel band material in figure, 21 be between maximum iso-curvature radius and minimum iso-curvature radius it
Between any iso-curvature radius steel band material, 22 be minimum iso-curvature radius steel band material.23 be point of contact, and 24 be the 4th puck position
One, 25 be the 4th puck position two, and 26 be the 4th puck position three, and 27 be the 4th pinch roller tracks.
Specific embodiment
A kind of winding mechanism of coiling free shape steel band material ring, can containing the mutual distance being in the same plane
The first pinch roller (7), the second pinch roller (9), third pinch roller (11) adjusted.Make by adjusting the distance between three pinch rollers by three pinch rollers
The bending of iso-curvature radius needed for the steel band material after pressure occurs in succession.First pinch roller, the second pinch roller are put down locating for third pinch roller
Also contain the 4th pinch roller (17) in face；4th pinch roller is driven by stepper motor, is limited in locating plane and is made straight line
It is mobile.4th pinch roller is also used for pressed-steel strip.Steel band material sequentially passes through the first pinch roller, the second pinch roller, third pinch roller, the 4th pressure
The compacting of wheel, first three tangential iso-curvature bent steel strip for suppressing of wheel are suppressed through the 4th pinch roller again, can generate it is another tangentially etc.
The bending degree of curvature bending steel band material, another tangential iso-curvature bent steel strip is true by the mutual distance of rear three-wheel
It is fixed.It moves linearly in orbit since the 4th pinch roller is defined, when the continuous or continuous movement on rectilinear orbit of the 4th pinch roller
When position, the curvature of the bent steel strip exported from the 4th pinch roller is also continuous or continuous changes.
Free shape steel band material ring winding method, comprising: (i) depicts free shape using free shape molded line tracing point
Molded line (3)；The free shape molded line tracing point is opposite with the close-shaped molded line tracing point on close-shaped molded line (1)
It answers.Close-shaped molded line is positive round, diameter for the piston ring to be designed outer diameter.Free shape molded line is piston ring in freedom
The pattern curve of extexine under state status.Tracing point on free shape molded line is opposite with the tracing point on close-shaped molded line
It answers, refers to free shape molded line opening two o'clock P1、P2N+1The closing point M of close-shaped molded line can be overlapped in closed condition；Pn
And Pn+1It can be transitioned into P ' respectivelynWith P 'n+1Two o'clock；And PN+1Point then remains stationary.So free shape molded line in Fig. 1 or Fig. 2
With close-shaped molded line in PN+1Point coincides together, and the gap distribution between two molded line reflects piston ring and acts in the cylinder
The pressure of cylinder wall is distributed.
(ii) utilize steel band material on winding mechanism around the method for steel strip material ring；The winding mechanism contains positioned at same
Adjustable first pinch roller (7) of mutual distance in plane, the second pinch roller (9), third pinch roller (11)；It is described to utilize steel band material
The method of coiling has steel band material with constant rate of speed V on winding mechanism0The first pinch roller (7) are conveyed into, through the second pinch roller (9)
The step of pressure generates tangential iso-curvature bent steel strip in succession with third pinch roller (11).Improvements of the invention are:
(iii) the first pinch roller in the winding mechanism, the second pinch roller, contain the 4th pressure in plane locating for third pinch roller
Wheel；4th pinch roller is limited in locating plane and moves linearly；4th pinch roller linear movement amount is by step motor control.
Stepper motor accurately controls the linear movement amount of the 4th pinch roller by the angle of rotation.
(iv) radius of curvature of the extexine radius of curvature of the tangential iso-curvature bent steel strip with close-shaped molded line
R0It is equal.The equal tangential iso-curvature bent steel strip that ensure that first three pinch roller suppresses of the two is suitable for rear three pinch roller and suppresses
The lesser variable curvature bent steel strip of Curvature varying amplitude.
(v) apply tangential iso-curvature bent steel strip through the 4th pinch roller by controlling the variation of the 4th pinch roller linear movement amount
Free shape steel band material ring is generated after pressure；And the shape phase of the extexine and free shape molded line of the free shape steel band material ring
Together.Rotational angle by controlling stepper motor can accurately control amount of movement of the 4th pinch roller on rectilinear orbit, and then make
The bending of predetermined bend radius occurs for the steel band material of the every output unit length of the 4th pinch roller.When driving stepper motor, shifting is found out
The radius of curvature functional relation of momentum and steel band material list bit length, then amount of movement is converted into the electric pulse for driving stepper motor
Number.
Above-mentioned free shape steel band material ring winding method:
(i) free shape molded line tracing point shares 2N+1, and wherein N is integer；On free shape molded line it is two neighboring from
By shape molded line tracing point PnAnd Pn+1Between molded line length LnIt calculates as follows:
Wherein Rn+1For free shape molded line Pn+1Radius of curvature at point；RnFor free shape molded line PnCurvature half at point
Diameter；θn+1、θnRespectively free shape molded line Pn+1Point, PnPolar angle of the point in polar coordinate system, unit are degree；The polar coordinate system
Pole be free shape molded line central point O, polar axis be horizontal axis OX；N=1,2,3 ..., 2N.
Here close-shaped molded line tracing point is from P1' to PN+1'；Again from P 'N+1To P '2N+1.2N+1 point is shared, will be closed
Shape molded line circumference 2N equal part.Respectively with free shape molded line tracing point from P1To PN+1, then from PN+1To P2N+1It is corresponding.Wherein,
Close-shaped molded line tracing point P1' and P '2N+1It is M point that two-end-point, which is overlapped,.In closure, free state transformation, two molded line PN+1' point
With PN+1Point not only indicates the same point on the piston ring material to be designed, and can remain during two state transformations
It is static.In known close-shaped molded line and its point PnThe radius and polar angle θ of 'nUnder the conditions of ', according to such as golden thatch of pressure distribution theory
Above-mentioned L can be calculated in Boolean lattice, Arnold's German-style, relative formula, formula etc.nPoint P on free shape molded line in formulanPolar diameter ρnThe pole and
Angle θn.Therefore, available by free shape molded line by known close-shaped molded line according to existing a certain pressure distribution theory
Free shape molded line that tracing point is depicted simultaneously acquires P under given n arbitrary valuenRadius of curvature R at pointn.So free shape
Adjacent two o'clock P on molded linen+1Point, PnPoint arc length LnAlso it can calculate.Here because free shape molded line is close to just
Round ellipse, adjacent two o'clock P on linen+1Point, PnThe polar angle difference of point can then regard the angle between two o'clock radius of curvature as；And it uses
The geometric average value of radius of curvature at two o'clock is then taken in the radius of curvature for calculating arc length.
(ii) production corresponds to free shape molded line tracing point PnAnd Pn+1Between molded line length LnFree shape steel band
Expect the steel band material length L conveyed needed for lengthn' calculate as follows:
Wherein KlFor the feeding coefficient of steel band material；T is the thickness of steel band material.
LnT/2 show that length calculated is the length of steel band material middle layer in ' formula.
Feeding COEFFICIENT K1It is the positive round actual (tube) length for being D using one steel band material outer layer diameter of steel band material coiling with a thickness of T
Spend the ratio of L and its theoretical length value L '.Physical length L can obtained after producing positive round by directly measurement.Theoretical length
Value L '=π (D-T), unit are millimeter.
(iii) production corresponds to free shape molded line tracing point PnAnd Pn+1Between molded line length LnFree shape steel band
Expect that the 4th pinch roller is in coordinate X when lengthnPosition；4th pinch roller is from upper coordinate Xn-1Position is moved to coordinate XnThe straight line of position
Amount of movement Δ Xn=Xn-Xn-1Are as follows:
Wherein X0It is the 4th pinch roller initial position co-ordinates；
R0It is that the 4th pinch roller is in initial coordinate X0When steel band material with constant rate of speed V0It is conveyed into after the first pinch roller through the second pressure
The tangential iso-curvature bent steel strip outer curvature radius that wheel, third pinch roller, the 4th pinch roller pressure generate；In Fig. 1 (or Fig. 2) certainly
It is open by shape molded line towards OX reference axis (or O ' X ' reference axis) direction, because free shape molded line is irregular elliptic curve,
And transverse is on perpendicular to this change in coordinate axis direction, R0Take the radius of curvature at freedom molded line short axle endpoint.That is this hair
The original state of the winding mechanism of bright coiling free shape steel band material ring is using four pinch roller coiling outer layer radiuses as freedom molded line short axle
On the basis of the curved steel band material ring of the tangential iso-curvature of radius of curvature at endpoint.Because the tracks of the 4th pinch roller are straight lines,
X can be enabled0=0.So P1Radius of curvature R at point1=R0。
KXFor the transport coefficient of the 4th pinch roller,
MaxX is the maximum value of the 4th pinch roller coordinate X；MinX is the minimum value of the 4th pinch roller coordinate X；The fortune of 4th pinch roller
Dynamic rail road is straight line.Optional coordinate origin, establishes one-dimensional coordinate system.Its move two extreme coordinates be respectively just maxX,
minX.The two coordinates can pass through the positive round steel band material ring and short axle of radius of curvature at production free shape molded line long axis endpoint
The positive round steel band material ring measurement of radius of curvature obtains at endpoint.
MaxR is the maximum iso-curvature radius put on free shape molded line, it is equal to the radius of curvature at short axle endpoint.
MinR is the minimum iso-curvature radius put on free shape molded line, it is equal to the radius of curvature at long axis endpoint.
The transport coefficient K of 4th pinch rollerXIt is on the 4th pinch roller maximum amount of movement for linear motion and free shape molded line
Radius of curvature changes the ratio between maximum difference.Using the difference and transport coefficient K of line segment two-end-point radius of curvatureXProduct as the 4th
Amount of movement of the pinch roller on rectilinear orbit can be such that the amount of movement of all line segments being partitioned by free shape molded line tracing point accomplishes
Uniformity allows the 4th pinch roller continuously to export smooth free shape steel band material.
It (iv) is L from the 4th pinch roller output lengthn' steel band material required for time Tn=Ln′/V0, the 4th pressure during this
The location of wheel coordinate Xn:
Wherein tnFor time, 0≤tn≤Tn；
(v) Program Synchronization controls the location of the steel band material length exported from the 4th pinch roller and the 4th pinch roller coordinate.
The winding mechanism of coiling free shape steel band material ring controls the location of the 4th pinch roller coordinate Xn(tn), steel band material
The delivered length of conveying mechanism control steel band material.Steel bands material, which conveys how much length, necessarily just has the steel band material of equivalent length successively to pass through
It crosses the first pinch roller, the second pinch roller, third pinch roller, the 4th pinch roller and is exported from the delivery outlet of the 4th pinch roller.In 0≤tn≤TnTime
Interior steel band material conveyer structure conveying steel belt material length Ln', the winding mechanism of coiling free shape steel band material ring segment length from conveying
Spend Ln-1' moment tn-1=Tn-1- δ/2 begin to respond to mobile 4th pinch roller and in moment tnThe movement of=δ/2 terminates, and wherein δ is the
Four pinch rollers are from position coordinates Xn-1(tn-1) it is moved to position coordinates Xn(tn) needed for time.Wherein, 0≤tn-1≤Tn-1For steel band
Material conveyer structure conveying steel belt material length Ln-1' time range.
(vi) when the steel band material length exported from the 4th pinch roller isLn' when output par, c is cut down from steel band material
Obtain free shape steel band material ring.The radially bending shape of free shape steel band material ring outer layer is high according to free shape molded line
Precision is imitated out.The production of free shape steel piston ring is completed in subsequent plane sizing heat treatment.
75 millimeters of outer diameter of free shape steel band is closed with wide 1.26 millimeters, thick 2.9 millimeters of steel band material production below
For material ring.
1, close-shaped molded line is the circle that diameter is 75 millimeters.With the coordinate system that Fig. 2 is established, polar diameter ρ 'n=37.5 millimeters.
N=18 is enabled, by 36 equal part of circumference, using Along ent as close-shaped molded line tracing point.Close-shaped molded line tracing point is in circumference
2N+1=37 upper shared, upper semicircumference is from point P '1To point P '19, lower half circumference is from point P '19To point P '37, midpoint P '1And point
P '37It is the two o'clock to coincide at close-shaped molded line closure mouth.The polar diameter ρ ' of each tracing pointnIt is all 37.5 millimeters, but polar angle
θ′n, wherein n=1,2,3 ... ..., N.θ′1It is 0 °, θ '2It is 10 °, θ '3It is 30 ° ... ..., θ '19It is 180 °；..., θ '37=
360°.Its corresponding free shape molded line tracing point shares 37, right on free shape molded line with the coordinate system that Fig. 1 is established
The point P answerednFrom P1To P19, then from P19To P37。
Free shape molded line PnPolar coordinates (the ρ of pointn, θn) with close-shaped molded line on P 'nPolar coordinates (the ρ ' of pointn, θ 'n)
Corresponding relationship can be calculated according to existing Profile Design theory Arnold's German-style.Calculated result is shown in two molded line mapping tables.
According to this molded line design theory, 77.8 millimeters of long axis of free shape molded line can be calculated, it is 76.42 millimeters of short axle, average straight
77.43 millimeters of diameter.
2, free shape molded line has been determined by way of describing point list, then can have calculated free shape molded line and retouches
Draw any point PnThe radius of curvature R at placen.Since free shape molded line is very close with close-shaped molded line, when close-shaped
When molded line tracing point is enough, any point P on free shape molded linenRadius of curvature R at tracing pointnIt is inevitable with the point at
Polar diameter is very close.So Rn≈ρn.Radius of curvature at each free shape molded line tracing point is shown in the end of writing table.
3, feeding COEFFICIENT K1Determination.The positive round shape steel band material ring for being 75 millimeters using steel band material production outer layer diameter D,
And measure L=219.349 millimeters of its length.
Its theoretical length L '=π (D-T)=3.14* (75-2.9)=226.394 millimeter.
Then, K1=L/L '=219.349/226.349=0.968.
4, the steel band material length conveyed needed for each section of arc length is calculated:
Ln' indicate PnPoint and Pn+1The steel band conveyed needed for arc length on freedom molded line between point between adjacent two tracing point
Expect length.
5, the determination of transport coefficient.
The one-dimensional coordinate of the 4th pinch roller tracks is established in the winding mechanism equipment of coiling free shape steel band material ring
It is X, coordinate origin is arbitrarily chosen.Production outer layer radius is Max R respectivelyn=39.12 millimeters are MinR with outer layer radiusn=
37.5 millimeters of two positive round steel band material rings.Record the maximum coordinates point 2.0 and min coordinates 1.2 of the 4th pinch roller.By they
Following formula is substituted into, transport coefficient K is acquiredx。
Wherein tnFor time, 0≤tn≤Tn。TnFree shape molded line point P is conveyed for feeding mechanismnWith point Pn+1Between arc length
Ln' time used.Enable R0=37.5, X0=0, the location of the 4th pinch roller of each time found out coordinate.See free shape type
Each segmental arc feed length of line and the 4th pinch roller moving coordinate list.
7, the speed V of conveying steel belt is measured0, calculate each section of steel band material Ln' required time Tn.By winding mechanism
The original state of four pinch rollers adjusts the position X for the steel band material ring for being 37.5 millimeters to four pinch rollers production outer layer radius0.Synchronously control
Winding mechanism and steel band material conveyer structure make steel band material conveyer structure in conveying Ln' period, it is ensured that the 4th pinch roller of winding mechanism
In Xn(tn) coordinate position.When 37 sections of steel band material, which all convey, to be finished, starts steel material shearing mechanism, the 4th pinch roller is transferred out
Free shape steel band material ring cut.
Two molded line mapping tables
| θn′ | θ n ' value | θn | θ n value | ρn | ρnValue |
| θ1′ | 0 | θ1 | 5.84 | ρ1 | 37.50 |
| θ2′ | 10 | θ2 | 15.80 | ρ2 | 37.72 |
| θ3′ | 20 | θ3 | 25.70 | ρ3 | 37.94 |
| θ4′ | 30 | θ4 | 35.55 | ρ4 | 38.14 |
| θ5′ | 40 | θ5 | 45.34 | ρ5 | 38.33 |
| θ6′ | 50 | θ6 | 55.09 | ρ6 | 38.49 |
| θ7′ | 60 | θ7 | 64.80 | ρ7 | 38.64 |
| θ8′ | 70 | θ8 | 74.48 | ρ8 | 38.76 |
| θ9′ | 80 | θ9 | 84.13 | ρ9 | 38.85 |
| θ10′ | 90 | θ10 | 93.76 | ρ10 | 38.93 |
| θ11′ | 100 | θ11 | 103.38 | ρ11 | 38.99 |
| θ12′ | 110 | θ12 | 112.97 | ρ12 | 39.04 |
| θ13′ | 120 | θ13 | 122.56 | ρ13 | 39.07 |
| θ14′ | 130 | θ14 | 132.14 | ρ14 | 39.09 |
| θ15′ | 140 | θ15 | 141.72 | ρ15 | 39.11 |
| θ16′ | 150 | θ16 | 151.29 | ρ16 | 39.11 |
| θ17′ | 160 | θ17 | 160.86 | ρ17 | 39.12 |
| θ18′ | 170 | θ18 | 170.43 | ρ18 | 39.12 |
| θ19′ | 180 | θ19 | 180 | ρ19 | 39.12 |
| θ20′ | 190 | θ20 | 189.57 | ρ20 | 39.12 |
| θ21′ | 200 | θ21 | 199.14 | ρ21 | 39.12 |
| θ′22 | 210 | θ22 | 208.71 | ρ22 | 39.12 |
| θ′23 | 220 | θ23 | 218.28 | ρ23 | 39.11 |
| θ′24 | 230 | θ24 | 227.86 | ρ24 | 39.11 |
| θ′25 | 240 | θ25 | 237.44 | ρ25 | 39.09 |
| θ′26 | 250 | θ26 | 247.03 | ρ26 | 39.07 |
| θ′27 | 260 | θ27 | 256.62 | ρ27 | 39.04 |
| θ′28 | 270 | θ28 | 266.24 | ρ28 | 38.99 |
| θ′29 | 280 | θ29 | 275.87 | ρ29 | 38.93 |
| θ′30 | 290 | θ30 | 285.52 | ρ30 | 38.85 |
| θ′31 | 300 | θ31 | 295.20 | ρ31 | 38.76 |
| θ′32 | 310 | θ32 | 304.91 | ρ32 | 38.64 |
| θ′33 | 320 | θ33 | 314.66 | ρ33 | 38.49 |
| θ′34 | 330 | θ34 | 324.45 | ρ34 | 38.33 |
| θ′35 | 340 | θ35 | 334.30 | ρ35 | 38.14 |
| θ′36 | 350 | θ36 | 344.20 | ρ36 | 37.94 |
| θ′37 | 360 | θ37 | 354.16 | ρ37 | 37.72 |
Each segmental arc feed length of free shape molded line and the 4th pinch roller moving coordinate list
| θn | θ n value | ρn | ρnValue | Rn | RnValue | Ln′ | Ln' value | Xn(tn) | Xn (tn) value |
| θ1 | 5.84 | ρ1 | 37.50 | R1 | 37.50 | L1′ | 6.083 | X1(t1) | 0.1086426 |
| θ2 | 15.80 | ρ2 | 37.72 | R2 | 37.72 | L2′ | 6.083 | X2(t2) | 0.2172852 |
| θ3 | 25.70 | ρ3 | 37.94 | R3 | 37.94 | L3′ | 6.082 | X3(t3) | 0.3160512 |
| θ4 | 35.55 | ρ4 | 38.14 | R4 | 38.14 | L4′ | 6.083 | X4(t4) | 0.4098789 |
| θ5 | 45.34 | ρ5 | 38.33 | R5 | 38.33 | L5′ | 6.085 | X5(t5) | 0.4888917 |
| θ6 | 55.09 | ρ6 | 38.49 | R6 | 38.49 | L6′ | 6.086 | X6(t6) | 0.5629662 |
| θ7 | 64.80 | ρ7 | 38.64 | R7 | 38.64 | L7′ | 6.088 | X7(t7) | 0.6222258 |
| θ8 | 74.48 | ρ8 | 38.76 | R8 | 38.76 | L8′ | 6.089 | X8(t8) | 0.6666705 |
| θ9 | 84.13 | ρ9 | 38.85 | R9 | 38.85 | L9′ | 6.089 | X9(t9) | 0.7061769 |
| θ10 | 93.76 | ρ10 | 38.93 | R10 | 38.93 | L10′ | 6.089 | X10(t10) | 0.7358067 |
| θ11 | 103.38 | ρ11 | 38.99 | R11 | 38.99 | L11′ | 6.089 | X11(t11) | 0.7604982 |
| θ12 | 112.97 | ρ12 | 39.04 | R12 | 39.04 | L12′ | 6.088 | X12(t12) | 0.7753131 |
| θ13 | 122.56 | ρ13 | 39.07 | R13 | 39.07 | L13′ | 6.087 | X13(t13) | 0.7851897 |
| θ14 | 132.14 | ρ14 | 39.09 | R14 | 39.09 | L14′ | 6.087 | X14(t14) | 0.7950663 |
| θ15 | 141.72 | ρ15 | 39.11 | R15 | 39.11 | L15′ | 6.087 | X15(t15) | 0.7950663 |
| θ16 | 151.29 | ρ16 | 39.11 | R16 | 39.11 | L16′ | 6.087 | X16(t16) | 0.8000046 |
| θ17 | 160.86 | ρ17 | 39.12 | R17 | 39.12 | L17′ | 6.088 | X17(t17) | 0.8000046 |
| θ18 | 170.43 | ρ18 | 39.12 | R18 | 39.12 | L18′ | 6.088 | X18(t18) | 0.8000046 |
| θ19 | 180 | ρ19 | 39.12 | R19 | 39.12 | L19′ | 6.088 | X19(t19) | 0.8000046 |
| θ20 | 189.57 | ρ20 | 39.12 | R20 | 39.12 | L20′ | 6.088 | X20(t20) | 0.8000046 |
| θ21 | 199.14 | ρ21 | 39.12 | R21 | 39.12 | L21′ | 6.087 | X21(t21) | 0.8000046 |
| θ22 | 208.71 | ρ22 | 39.12 | R22 | 39.12 | L22′ | 6.087 | X22(t22) | 0.7950663 |
| θ23 | 218.28 | ρ23 | 39.11 | R23 | 39.11 | L23′ | 6.087 | X23(t23) | 0.7950663 |
| θ24 | 227.86 | ρ24 | 39.11 | R24 | 39.11 | L24′ | 6.087 | X24(t24) | 0.7851897 |
| θ25 | 237.44 | ρ25 | 39.09 | R25 | 39.09 | L25′ | 6.088 | X25(t25) | 0.7753131 |
| θ26 | 247.03 | ρ26 | 39.07 | R26 | 39.07 | L26′ | 6.089 | X26(t26) | 0.7604982 |
| θ27 | 256.62 | ρ27 | 39.04 | R27 | 39.04 | L27′ | 6.089 | X27(t27) | 0.7358067 |
| θ28 | 266.24 | ρ28 | 38.99 | R28 | 38.99 | L28′ | 6.089 | X28(t28) | 0.7061769 |
| θ29 | 275.87 | ρ29 | 38.93 | R29 | 38.93 | L29′ | 6.089 | X29(t29) | 0.6666705 |
| θ30 | 285.52 | ρ30 | 38.85 | R30 | 38.85 | L30′ | 6.088 | X30(t30) | 0.6222258 |
| θ31 | 295.20 | ρ31 | 38.76 | R31 | 38.76 | L31′ | 6.086 | X31(t31) | 0.5629662 |
| θ32 | 304.91 | ρ32 | 38.64 | R32 | 38.64 | L32′ | 6.085 | X32(t32) | 0.4888917 |
| θ33 | 314.66 | ρ33 | 38.49 | R33 | 38.49 | L33′ | 6.083 | X33(t33) | 0.4098789 |
| θ34 | 324.45 | ρ34 | 38.33 | R34 | 38.33 | L34′ | 6.082 | X34(t34) | 0.3160512 |
| θ35 | 334.30 | ρ35 | 38.14 | R35 | 38.14 | L35′ | 6.083 | X35(t35) | 0.2172852 |
| θ36 | 344.20 | ρ36 | 37.94 | R36 | 37.94 | L36′ | 6.083 | X36(t36) | 0.1086426 |
| θ37 | 354.16 | ρ37 | 37.72 | R37 | 37.72 | ‐‐‐ | ‐‐‐‐ | ‐‐‐‐‐‐ | ‐‐‐‐‐‐‐‐ |
Claims (3)
1. free shape steel band material ring winding method, comprising:
(i) free shape molded line (3) are depicted using free shape molded line tracing point；The free shape molded line tracing point with
Close-shaped molded line tracing point on close-shaped molded line (1) is corresponding；
(ii) utilize steel band material on winding mechanism around the method for steel strip material ring；The winding mechanism, which contains, to be generally aligned in the same plane
Adjustable first pinch roller (7) of interior mutual distance, the second pinch roller (9), third pinch roller (11)；It is described using steel band material around
It is had steel band material around the method for steel strip material ring with constant rate of speed V in mechanism processed0The first pinch roller (7) are conveyed into, through the second pressure
Take turns (9) and successive the step of the generating tangential iso-curvature bent steel strip that press of third pinch roller (11)；
It is characterized in that:
(iii) the first pinch roller in the winding mechanism, the second pinch roller, contain the 4th pinch roller in plane locating for third pinch roller；Institute
It states the 4th pinch roller and is limited in locating plane and move linearly；4th pinch roller linear movement amount is by step motor control；
(iv) radius of curvature R of the extexine radius of curvature of the tangential iso-curvature bent steel strip with close-shaped molded line0Phase
Deng；
(v) make tangential iso-curvature bent steel strip after the 4th pinch roller pressure by controlling the variation of the 4th pinch roller linear movement amount
Generate free shape steel band material ring；And the extexine of the free shape steel band material ring is identical as the shape of free shape molded line.
2. free shape steel band material ring winding method according to claim 1, it is characterized in that:
(i) free shape molded line tracing point shares 2N+1, and wherein N is integer；Two neighboring free form on free shape molded line
Shape molded line tracing point PnAnd Pn+1Between molded line length LnIt calculates as follows:
Wherein Rn+1For free shape molded line Pn+1Radius of curvature at point；
RnFor free shape molded line PnRadius of curvature at point；
θn+1、θnRespectively free shape molded line Pn+1Point, PnPolar angle of the point in polar coordinate system, unit are degree；The polar coordinate system
Pole be free shape molded line central point O, polar axis be horizontal axis OX；
N=1,2,3 ..., 2N；
(ii) production corresponds to free shape molded line tracing point PnAnd Pn+1Between molded line length LnFree shape steel band material it is long
The steel band material length L conveyed needed for degreen' calculate as follows:
Wherein KlFor the feeding coefficient of steel band material；
T is the thickness of steel band material；
(iii) production corresponds to free shape molded line tracing point PnAnd Pn+1Between molded line length LnFree shape steel band material it is long
Tetra- pinch roller of Du Shi is in coordinate XnPosition；4th pinch roller is from upper coordinate Xn-1Position is moved to coordinate XnThe linear movement of position
Measure Δ Xn=Xn-Xn-1Are as follows:
Wherein X0It is the 4th pinch roller initial position co-ordinates；
R0It is that the 4th pinch roller is in initial coordinate X0When steel band material with constant rate of speed V0Be conveyed into after the first pinch roller through the second pinch roller,
The tangential iso-curvature bent steel strip radius of curvature that third pinch roller, the 4th pinch roller pressure generate；
KXFor the transport coefficient of the 4th pinch roller,
MaxX is the maximum value of the 4th pinch roller coordinate X；
MinX is the minimum value of the 4th pinch roller coordinate X；
MaxR is the maximum iso-curvature radius put on free shape molded line；
MinR is the minimum iso-curvature radius put on free shape molded line；
It (iv) is L from the 4th pinch roller output lengthn' steel band material required for time Tn=Ln′/V0, the 4th pinch roller institute during this
The position coordinates X at placen:
Wherein tnFor time, 0≤tn≤Tn；
(v) Program Synchronization controls the location of the steel band material length exported from the 4th pinch roller and the 4th pinch roller coordinate；
(vi) when the steel band material length exported from the 4th pinch roller isWhen output par, c is cut down from steel band material.
3. a kind of winding mechanism of coiling free shape piston steel band, can containing the mutual distance being in the same plane
The first pinch roller (7), the second pinch roller (9), third pinch roller (11) adjusted；It is characterized in that the first pinch roller, the second pinch roller, third pinch roller institute
Also contain the 4th pinch roller (17) in the plane at place；4th pinch roller is driven by stepper motor, is limited in locating plane
It is for linear motion.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110369658A (en) * | 2019-07-26 | 2019-10-25 | 安徽同盛环件股份有限公司 | A kind of flange ring brake forming segmental machining device and its preparation process |
| CN110523812A (en) * | 2019-09-24 | 2019-12-03 | 王志刚 | Metallic packing ring process equipment and numerically-controlled machine tool |
| CN110605540A (en) * | 2019-09-24 | 2019-12-24 | 吴杰 | Processing method of radial metal sealing ring |
| CN113118547A (en) * | 2021-05-23 | 2021-07-16 | 华闽南配集团股份有限公司 | Method and mechanism for cutting steel strip material with spiral lining ring into steel strip material with free split ring |
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| EP0684096B1 (en) * | 1994-05-25 | 1999-12-15 | Aisin Seiki Kabushiki Kaisha | Method of manufacturing friction plates |
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