CN106271376B - A kind of rolling tool and its method for carrying out the progressive rolling forming in metal blank surface - Google Patents
A kind of rolling tool and its method for carrying out the progressive rolling forming in metal blank surface Download PDFInfo
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- CN106271376B CN106271376B CN201610841723.3A CN201610841723A CN106271376B CN 106271376 B CN106271376 B CN 106271376B CN 201610841723 A CN201610841723 A CN 201610841723A CN 106271376 B CN106271376 B CN 106271376B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
Abstract
The invention discloses a kind of rolling tool, including rolling depression cutter knife handle, it is disposed with groups of springs and rolling cutter head in rolling depression cutter knife handle, the feather key for preventing the relative rotation of rolling cutter head and rolling knife handle is provided in rolling depression cutter knife handle, flange is connect with rolling depression cutter knife handle.Rolling tool rolling is high-efficient.A kind of method of the progressive rolling forming in metal blank surface, comprising the following steps: step 1, analysis part to be formed obtain the parts locally maximum deflection to be formed and become Properties: Density；Step 2, according to the centre distance and test plate (panel) of the radius of rolling tool ball, two balls, carry out test plate (panel) test, rolling tool and rolling power made to be able to satisfy forming limit requirement；Step 3 determines part rolling parameter to be formed, and part rolling parameter to be formed includes the machine spindle speed n and feed speed v along the direction x, yx、vy, parameter is rolled according to part to be formed, carries out the progressive rolling forming in metal blank surface.Part Surface Roughness is small after being shaped using this method.
Description
Technical field
The invention belongs to machine-building metal blank surface shaping technique fields, are related to a kind of rolling tool, further relate to adopt
The method for carrying out the progressive rolling forming in metal blank surface with the rolling tool.
Background technique
Sheet metal forming has a wide range of applications in manufacturing industry, and traditional metal blank processing technology all be unable to do without mould
Tool, it is long using the processing technology period of mold, and lack flexibility, it just needs to re-replace mold when product variations, this is just
Extend the development cycle of new product.And the update of modern society's product is very fast, how quickly, low cost and it is high-quality
New product is developed to amount, is the key that Business survival and development.
Therefore some flexible freeform fabrications come into being, such as: contour peening, digitizing inspection, without mould multiple spot
Forming, laser forming technology etc., these technologies are all to realize the mouldless shaping of plate under the support of digital control system, are had very
Big flexibility.They overcome the deficiency of die forming, save mold manufacturing expense and time, are particularly suitable for opening for new product
Hair and small lot production.
Surface rolling be applied while piece surface rolls to surface with the smooth rolling element of hard and surface it is certain
The technique of pressure.It can achieve the effect of three aspects by rolling: reducing surface roughness, improve surface hardness, and in table
Layer generates compressive stress layer.
Surface rolling reinforcement technique (hereinafter referred to as rolling) is strong on the surface that Germany is used for locomotive axle for the first time from nineteen twenty-nine
After change, obtain answering extensively in fields such as aerospace, motor locomotive, precision machinery, national defense industry, biomedicines at present
With.Rolling technology, rolling object and rolling tool are gradually diversified, it is intended to improve processing efficiency and obtain better surface matter
Amount.
Since panel surface rolling technology can form compressive stress layer on plate surface layer, plate is made to generate bending deformation, control
System rolling parameter can control the deformed shape of plate, can realize the soft of wall plate parts by rolling technology in this way
Property forming.
The progressive rolling forming in metal blank surface is a kind of forming of great application prospect of siding class flexible part forming
Method.Surface peening purpose patent is reached in panel surface formation compression by rolling technology at present and document is numerous, but
For the few of forming.
Summary of the invention
The object of the present invention is to provide a kind of rolling tool, rolling tool rolling is high-efficient.
It is a further object to provide a kind of methods of progressive rolling forming in metal blank surface, using this method
Part Surface Roughness is small after forming.
The technical scheme adopted by the invention is that a kind of rolling tool, including rolling depression cutter knife handle, in rolling depression cutter knife handle successively
It is provided with groups of springs and rolling cutter head, being provided in rolling depression cutter knife handle prevents what is relatively rotated between rolling cutter head and rolling knife handle to lead
Xiang Jian, the one end for rolling cutter head pass through flange and stretch out outside rolling depression cutter knife handle, and flange is connect with rolling depression cutter knife handle.
The features of the present invention also characterized in that
Knife handle is the Step Shaft being made of big shaft end and small shaft end, and small shaft end and lathe knife handle are cooperatively connected, in big shaft end
It is provided with blind hole, groups of springs and rolling cutter head are respectively positioned in blind hole, and there are two symmetrical rectangles for big shaft end medial surface setting
Through-hole, feather key are located in rectangular through-hole, and screw b is provided on feather key.
It is connected between flange and rolling depression cutter knife handle by screw a, screw a sequentially passes through spring washer, flange and rolling depression cutter
Knife handle.
Groups of springs is made of the butterfly spring of one group of positive desuperposition.
Rolling cutter head includes knife bar, and it is outer and be installed with mandrel that rolling depression cutter knife handle is stretched out in one end of knife bar, the both ends of mandrel according to
It is secondary to be connected with plain washer, bearing and shaft block ring, it is cased with ball on each bearing, hole retaining ring is installed on ball.
Another technical solution of the present invention is that a kind of method of the progressive rolling forming in metal blank surface is adopted
With a kind of rolling tool, comprising the following steps:
Step 1, analysis part to be formed obtain the parts locally maximum deflection to be formed and become Properties: Density；
Step 2, according to the centre distance and test plate (panel) of the radius of rolling tool ball, two balls, carry out test plate (panel) test, make
Rolling tool and rolling power are able to satisfy forming limit requirement；
Step 3 determines part rolling parameter to be formed, and part rolling parameter to be formed includes machine spindle speed n and edge
X, the feed speed v in the direction yx、vy, parameter is rolled according to part to be formed, carries out the progressive rolling forming in metal blank surface.
The features of the present invention also characterized in that
Parts locally maximum deflection to be formed is obtained in step 1 becomes Properties: Density specifically:
By part uniform segmentation, feature locations of the center of each subregion as part extract part feature position respectively
The local thickness t setlocal, maximum curvatureMinimum curvatureAnd minimum curvature direction, according to formula (1) and formula
(2) Maximum bending moment of each feature locations is calculated separatelyWith minimum moment
In formula (1) and formula (2), ν is the Poisson's ratio of material of test piece, and D is calculated by formula (3),
In formula (3), ν is the Poisson's ratio of material of test piece, and E is the elasticity modulus of material of test piece, tlocalFor part feature position
The local thickness set,
Become Properties: Density according to the bending that formula (4) calculate feature locations
Local maxima bending, which is calculated, according to formula (5) becomes Properties: Density Wmax,
The test of step 2 test plate (panel) specifically:
Step 2.1 determines test plate (panel)；
Test plate (panel) is rectangular flat plate, length L, width B, with a thickness of t；Test plate (panel) plane is parallel with xoy, material of test piece and institute
Want the material of formation of parts identical；Test plate (panel) width B should be greater than the center of two balls away from d；
Step 2.2, test；
Power F and drafts Δ z are rolled by scale on rolling tool；
Set the lower machine spindle speed n and feed speed v along the direction x, yx、vy, adjust the drafts of rolling tool
Δ z makes to roll the 75-85% that power F reaches the specified rolling power of rolling tool；Lathe drives rolling tool to roll examination along its length
Plate one time；Again the new test plate (panel) of clamping keeps rolling power constant, incrementally increases speed of mainshaft n and feed speed vxAnd vy, rolling is newly
Test plate (panel)；At least complete test plate (panel) test three times；
Step 2.3, measurement；
The camber value h within the scope of each rolling test plate (panel) middle position span l is measured by camber instrument；By being measured microscopically rolling
Impression stitch width w；
Step 2.4, result；
According to formula (6), (7) and (8) calculate separately the deformed curvature of test plate (panel) be ρ, test plate (panel) deformation after be bent moment M and
Bending deformation energy density W after test plate (panel) deformation；
In formula (6), h is the camber value measured within the scope of each rolling test plate (panel) middle position span l by camber instrument, and l is
Roll test plate (panel) middle position span；
In formula (7), E is the elasticity modulus of material of test piece, and ν is the Poisson's ratio of material of test piece, and t is test plate (panel) thickness, and ρ is examination
The deformed curvature of plate；
W=M ρ (8)
In formula (8), M is that moment of flexure is bent after test plate (panel) deforms, and ρ is the deformed curvature of test plate (panel)；
According to the spindle revolutions p in formula (9) unit of account feeding length,
In formula (9), n is the revolving speed of lathe, vxAnd vyRespectively machine tool feed speed,
There are two balls for rolling depression cutter as rolling element, then the number i.e. track density P that ball rolls across in unit feeding length
Be calculated as formula (10),
P=4p (10)
In formula (10), p is the spindle revolutions in unit feeding length,
The coverage rate C of rolling impression is obtained by formula (11) approximate calculation,
C=wP (11)
In formula (11), P is the number i.e. track density that ball (10) rolls across in unit feeding length, and w is rolling trace
Width,
Bending deformation energy density W and corresponding coverage rate C after the test plate (panel) being calculated deformation is fitted by formula (12),
Obtain parameter k1Or k2To get having arrived rolling tool in the revolving speed n and feed speed v of lathexAnd vyUnder the conditions of between sheet metal deformation
Primary relationship；
Taking coverage rate C is 0.8, calculates bending deformation energy density W after corresponding test plate (panel) deformation, judges whether W can be greater than office
Portion maximum flexibility energy density Wmax, if it is, selected rolling tool and rolling power are able to satisfy forming limit requirement, otherwise
Using ball size is smaller or the specified biggish rolling tool of rolling power, step 2.2- step 2.4 is repeated.
Step 3 specifically: according to the Maximum bending moment for each feature locations that step 1 calculatesWith minimum momentIt brings into step 2 formula (12), calculates the rolling coverage rate C of each feature locations again, further according to formula (13) inverse
Meet the machine spindle speed n and feed speed v of conditionxAnd vy,
Correspond each feature locations and theoretical rolling parameter；Each feature locations are grouped along minimum curvature direction,
The relationship between polynomial repressentation the two, then benefit are utilized using rolling parameter as dependent variable using feeding distance as independent variable in group
The coefficient value in polynomial relation is obtained with least-square fitting approach, so that the continuous rolling parameter along direction of feed is obtained,
Then the progressive rolling forming in metal blank surface is carried out using the continuous rolling parameter along direction of feed.
The beneficial effects of the present invention are:
The buffer function rolling power of a kind of rolling tool, groups of springs is stablized, the band that the rotary motion of two balls is formed
Formula rolling track makes rolling efficiency higher；Ball and panel surface are rolling friction, and frictional force is small, panel surface matter after rolling
It measures.
A kind of method of the progressive rolling forming in metal blank surface, compared with contour peening and thermal stress forming, advantage
It is:
(1) former is required low.Forming tool is installed on machine tool or numerically-controlled machine tool can realize generally
Surface rolling technique, do not need the former as compressed air shotblasting machine, this kind of profession of laser.
(2) workpiece surface quality is good after shaping.Workpiece is decreased obviously through surface rolling rear surface roughness, contour peening meeting
Apparent crater is left on the surface of the workpiece.
(3) forming parameter relatively easily controls.Forming tool size, forming track and contact pressure by mechanical structure and
Digital control system is all easier to control, and the residual stress field regularity of distribution of generation is also more stable.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of rolling tool of the present invention.
In figure, 1. rolling depression cutter knife handles, 2. groups of springs, 3. knife bars, 4. flanges, 5. hole retaining rings, 6. mandrels, 7. axis gear
Circle, 8. bearings, 9. plain washers, 10. balls, 11. screw a, 12. spring washers, 13. screw b, 14. feather keys.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The present invention provides a kind of rolling tools, as shown in Figure 1, including rolling depression cutter knife handle 1, in rolling depression cutter knife handle 1 successively
It is provided with groups of springs 2 and rolling cutter head, is provided with the relative rotation for preventing rolling cutter head and rolling knife handle 1 in rolling depression cutter knife handle 1
Feather key 14, roll cutter head one end pass through flange 4 and stretch out rolling depression cutter knife handle 1 outside, flange 4 is connect with rolling depression cutter knife handle 1；
The Step Shaft that knife handle 1 is made of big shaft end and small shaft end, small shaft end and lathe knife handle are cooperatively connected, and set in big shaft end
It is equipped with blind hole, groups of springs 2 and rolling cutter head are respectively positioned in blind hole, and there are two symmetrical rectangles to lead to for big shaft end medial surface setting
Hole, feather key 14 are located in rectangular through-hole, and screw b13 is provided on feather key 14；
It is connected between flange 4 and rolling depression cutter knife handle 1 by screw a11, screw a11 sequentially passes through spring washer 12, flange 4
With rolling depression cutter knife handle 1；
Groups of springs 2 is made of the butterfly spring of one group of positive desuperposition；
Rolling cutter head includes knife bar 3, and one end of knife bar 3 is stretched out outside rolling depression cutter knife handle 1 and is installed with mandrel 6, the both ends of mandrel 6
It is connected with plain washer 9, bearing 8 and shaft block ring 7 in turn, ball 10 is cased on each bearing 8, hole is installed on ball 10
With retaining ring 5.
A kind of method of the progressive rolling forming in metal blank surface, using a kind of rolling tool, comprising the following steps:
Step 1, analysis part to be formed obtain the parts locally maximum deflection to be formed and become Properties: Density；
Parts locally maximum deflection to be formed is obtained in step 1 becomes Properties: Density specifically:
By part uniform segmentation, feature locations of the center of each subregion as part extract part feature position respectively
The local thickness t setlocal, maximum curvatureMinimum curvatureAnd minimum curvature direction, according to formula (1) and formula (2)
Calculate separately the Maximum bending moment of each feature locationsWith minimum moment
In formula (1) and formula (2), ν is the Poisson's ratio of material of test piece, and D is calculated by formula (3),
In formula (3), ν is the Poisson's ratio of material of test piece, and E is the elasticity modulus of material of test piece, tlocalFor part feature position
The local thickness set,
Become Properties: Density according to the bending that formula (4) calculate feature locations
Local maxima bending, which is calculated, according to formula (5) becomes Properties: Density Wmax,
Step 2, according to the centre distance and test plate (panel) of the radius of rolling tool ball 10, two balls 10, carry out test plate (panel) examination
It tests, rolling tool and rolling power is made to be able to satisfy forming limit requirement；
The test of step 2 test plate (panel) specifically:
Step 2.1 determines test plate (panel)；
Test plate (panel) is rectangular flat plate, length L, width B, with a thickness of t；Test plate (panel) plane is parallel with xoy, material of test piece and institute
Want the material of formation of parts identical；Test plate (panel) width B should be greater than the center of two balls 10 away from d；
Step 2.2, test；
Power F and drafts Δ z are rolled by scale on rolling tool；
Set the lower machine spindle speed n and feed speed v along the direction x, yx、vy, adjust the drafts of rolling tool
Δ z makes to roll the 75-85% that power F reaches the specified rolling power of rolling tool；Lathe drives rolling tool to roll examination along its length
Plate one time；Again the new test plate (panel) of clamping keeps rolling power constant, incrementally increases speed of mainshaft n and feed speed vxAnd vy, rolling is newly
Test plate (panel)；At least complete test plate (panel) test three times；
Step 2.3, measurement；
The camber value h within the scope of each rolling test plate (panel) middle position span l is measured by camber instrument；By being measured microscopically rolling
Impression stitch width w；
Step 2.4, result；
According to formula (6), (7) and (8) calculate separately the deformed curvature of test plate (panel) be ρ, test plate (panel) deformation after be bent moment M and
Bending deformation energy density W after test plate (panel) deformation；
In formula (6), h is the camber value measured within the scope of each rolling test plate (panel) middle position span l by camber instrument, and l is
Roll test plate (panel) middle position span；
In formula (7), E is the elasticity modulus of material of test piece, and ν is the Poisson's ratio of material of test piece, and t is test plate (panel) thickness, and ρ is examination
The deformed curvature of plate；
W=M ρ (8)
In formula (8), M is that moment of flexure is bent after test plate (panel) deforms, and ρ is the deformed curvature of test plate (panel)；
According to the spindle revolutions p in formula (9) unit of account feeding length,
In formula (9), n is the revolving speed of lathe, vxAnd vyRespectively machine tool feed speed,
There are two balls 10 to be used as rolling element for rolling depression cutter, then the number i.e. track that ball 10 rolls across in unit feeding length is close
Degree P's is calculated as formula (10),
P=4p (10)
In formula (10), p is the spindle revolutions in unit feeding length,
The coverage rate C of rolling impression is obtained by formula (11) approximate calculation,
C=wP (11)
In formula (11), P is the number i.e. track density that ball 10 rolls across in unit feeding length, and w is that rolling trace is wide
Degree,
Bending deformation energy density W and corresponding coverage rate C after the test plate (panel) being calculated deformation is fitted by formula (12),
Obtain parameter k1Or k2To get having arrived rolling tool in the revolving speed n and feed speed v of lathexAnd vyUnder the conditions of between sheet metal deformation
Primary relationship；
Taking coverage rate C is 0.8, calculates bending deformation energy density W after corresponding test plate (panel) deformation, judges whether W can be greater than office
Portion maximum flexibility energy density Wmax, if it is, selected rolling tool and rolling power are able to satisfy forming limit requirement, otherwise
Using 10 size of ball is smaller or the specified biggish rolling tool of rolling power, step 2.2- step 2.4 is repeated；
Step 3 determines part rolling parameter to be formed, and part rolling parameter to be formed includes machine spindle speed n and edge
X, the feed speed v in the direction yx、vy；
Step 3 specifically: according to the Maximum bending moment for each feature locations that step 1 calculatesWith minimum momentIt brings into step 2 formula (12), calculates the rolling coverage rate C of each feature locations again, further according to formula (13) inverse
Meet the machine spindle speed n and feed speed v of conditionxAnd vy,
Correspond each feature locations and theoretical rolling parameter；Each feature locations are grouped along minimum curvature direction,
The relationship between polynomial repressentation the two, then benefit are utilized using rolling parameter as dependent variable using feeding distance as independent variable in group
The coefficient value in polynomial relation is obtained with least-square fitting approach, so that the continuous rolling parameter along direction of feed is obtained,
Then the progressive rolling forming in metal blank surface is carried out using the continuous rolling parameter along direction of feed.
The buffer function rolling power of a kind of rolling tool of the invention, groups of springs is stablized, the rotary motion shape of two balls
At strip-type rolling track make roll efficiency it is higher；Ball and panel surface are rolling friction, and frictional force is small, roll back plate
Expect that surface quality is good.
The method of a kind of progressive rolling forming in metal blank surface of the invention, with contour peening and thermal stress forming phase
Than, the advantage is that:
(1) former is required low.Forming tool is installed on machine tool or numerically-controlled machine tool can realize generally
Surface rolling technique, do not need the former as compressed air shotblasting machine, this kind of profession of laser.
(2) workpiece surface quality is good after shaping.Workpiece is decreased obviously through surface rolling rear surface roughness, contour peening meeting
Apparent crater is left on the surface of the workpiece.
(3) forming parameter relatively easily controls.Forming tool size, forming track and contact pressure by mechanical structure and
Digital control system is all easier to control, and the residual stress field regularity of distribution of generation is also more stable.And it is heated during thermal stress forming
Cooling velocity and all more difficult grasp of thermal conductivity law.
Claims (3)
1. a kind of method of the progressive rolling forming in metal blank surface, using a kind of rolling tool, which is characterized in that the cutter packet
It includes rolling depression cutter knife handle (1), groups of springs (2) and rolling cutter head is disposed in rolling depression cutter knife handle (1), rolling depression cutter knife handle (1) is interior
It is provided with the feather key (14) for preventing the relative rotation of rolling cutter head and rolling depression cutter knife handle (1), the one end for rolling cutter head passes through method
Blue (4) and stretch out rolling depression cutter knife handle (1) outside, flange (4) is connect with rolling depression cutter knife handle (1)；
The Step Shaft that the rolling depression cutter knife handle (1) is made of big shaft end and small shaft end, small shaft end and lathe knife handle are cooperatively connected, greatly
Blind hole is provided in shaft end, groups of springs (2) and rolling cutter head are respectively positioned in blind hole, and there are two symmetrical point for big shaft end medial surface setting
The rectangular through-hole of cloth, feather key (14) are located in rectangular through-hole, and screw b (13) are provided on feather key (14)；
It is connect between the flange (4) and rolling depression cutter knife handle (1) by screw a (11), screw a (11) sequentially passes through spring washer
(12), flange (4) and rolling depression cutter knife handle (1)；
The groups of springs (2) is made of the butterfly spring of one group of positive desuperposition；
The rolling cutter head includes knife bar (3), and one end of knife bar (3) stretches out rolling depression cutter knife handle (1) outside and is installed with mandrel (6), core
The both ends of axis (6) are connected with plain washer (9), bearing (8) and shaft block ring (7) in turn, are cased with ball on each bearing (8)
(10), hole retaining ring (5) are installed on ball (10)；
Specifically includes the following steps:
Step 1, analysis part to be formed, obtain the parts locally maximum flexibility energy density to be formed；
Step 2, according to the radiuses of rolling tool ball (10), the centre distance and test plate (panel) of two balls (10), carry out test plate (panel) examination
It tests, rolling tool and rolling power is made to be able to satisfy forming limit requirement；
Step 2.1 determines test plate (panel)；
Test plate (panel) is rectangular flat plate, length L, width B, with a thickness of t；Test plate (panel) plane is parallel with xoy, material of test piece with will be at
The material of shape part is identical；Test plate (panel) width B should be greater than the center of two balls (10) away from d；
Step 2.2, test；
Power F and drafts Δ z are rolled by scale on rolling tool；
Set the lower machine spindle speed n and feed speed v along the direction x, yx、vy, the drafts Δ z of rolling tool is adjusted,
Make to roll the 75-85% that power F reaches the specified rolling power of rolling tool；Lathe drives rolling tool to roll test plate (panel) one along its length
Time；Again the new test plate (panel) of clamping keeps rolling power constant, incrementally increases speed of mainshaft n and feed speed vxAnd vy, roll new test plate (panel)；
At least complete test plate (panel) test three times；
Step 2.3, measurement；
The camber value h within the scope of each rolling test plate (panel) middle position span l is measured by camber instrument；By being measured microscopically rolling trace
Stitch width w；
Step 2.4, result；
The deformed curvature of test plate (panel) is calculated separately according to formula (6), (7) and (8) to be ρ, be bent moment M and test plate (panel) after test plate (panel) deformation
Bending deformation energy density W after deformation；
In formula (6), h is the camber value measured within the scope of each rolling test plate (panel) middle position span l by camber instrument, and l is rolling
Test plate (panel) middle position span；
In formula (7), E is the elasticity modulus of material of test piece, and ν is the Poisson's ratio of material of test piece, and t is test plate (panel) thickness, and ρ is test plate (panel) change
Curvature after shape；
W=M ρ (8)
In formula (8), M is that moment of flexure is bent after test plate (panel) deforms, and ρ is the deformed curvature of test plate (panel)；
According to the spindle revolutions p in formula (9) unit of account feeding length,
In formula (9), n is the revolving speed of lathe, vxAnd vyRespectively machine tool feed speed,
There are two ball (10) to be used as rolling element for rolling depression cutter, then the number i.e. track that ball (10) rolls across in unit feeding length is close
Degree P's is calculated as formula (10),
P=4p (10)
In formula (10), p is the spindle revolutions in unit feeding length,
The coverage rate C of rolling impression is obtained by formula (11) approximate calculation,
C=wP (11)
In formula (11), P is the number i.e. track density that ball (10) rolls across in unit feeding length, and w is rolling trace width,
Bending deformation energy density W and corresponding coverage rate C after the test plate (panel) being calculated deformation is fitted by formula (12), is obtained
Parameter k1Or k2To get having arrived rolling tool in the revolving speed n and feed speed v of lathexAnd vyUnder the conditions of base between sheet metal deformation
Plinth relationship；
Taking coverage rate C is 0.8, calculates bending deformation energy density W after corresponding test plate (panel) deformation, judges whether W can be greater than part most
Macrobending deformation can density Wmax, if it is, selected rolling tool and rolling power are able to satisfy forming limit requirement, otherwise use
Ball (10) size is smaller or the specified biggish rolling tool of rolling power, repeats step 2.2- step 2.4；
Step 3 determines part to be formed rolling parameter, and part rolling parameter to be formed includes machine spindle speed n and along x, the side y
To feed speed vx、vy, parameter is rolled according to part to be formed, carries out the progressive rolling forming in metal blank surface.
2. a kind of method of progressive rolling forming in metal blank surface according to claim 1, it is characterised in that；The step
Parts locally maximum flexibility energy density to be formed is obtained in rapid 1 specifically:
By part uniform segmentation, feature locations of the center of each subregion as part extract part feature position respectively
Local thickness tlocal, maximum curvatureMinimum curvatureAnd minimum curvature direction, according to formula (1) and formula (2) point
The Maximum bending moment of each feature locations is not calculatedWith minimum moment
In formula (1) and formula (2), ν is the Poisson's ratio of material of test piece, and D passes through formula (3)
It is calculated,
In formula (3), ν is the Poisson's ratio of material of test piece, and E is the elasticity modulus of material of test piece, tlocalFor part feature position
Local thickness,
The bending deformation energy density of feature locations is calculated according to formula (4)
Local maxima bending deformation energy density W is calculated according to formula (5)max,
3. a kind of method of progressive rolling forming in metal blank surface according to claim 1, it is characterised in that；The step
Rapid 3 specifically: according to the Maximum bending moment for each feature locations that step 1 calculatesWith minimum momentBring step into
In rapid 2 formula (12), the rolling coverage rate C of each feature locations is calculated again, and the machine of condition is met further according to formula (13) inverse
Bed speed of mainshaft n and feed speed vxAnd vy,
Correspond each feature locations and theoretical rolling parameter；Each feature locations are grouped along minimum curvature direction, in group
Using feeding distance as independent variable, recycled most using rolling parameter as dependent variable using the relationship between polynomial repressentation the two
Small two multiply the coefficient value in approximating method acquisition polynomial relation, to obtain the continuous rolling parameter along direction of feed, then
The progressive rolling forming in metal blank surface is carried out using the continuous rolling parameter along direction of feed.
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| CN110202049B (en) * | 2019-06-13 | 2020-06-12 | 山东大学 | Tool head integrating pressure control and displacement compensation and control method |
| CN110979852B (en) * | 2019-10-25 | 2021-05-04 | 南京岸鸣智能科技有限公司 | Control method and system for straw packing machine and computer readable storage medium |
| CN112846640B (en) * | 2020-12-15 | 2023-06-02 | 贵州博泰自动化科技有限公司 | Pressure checking method and machining equipment |
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| CN101791756A (en) * | 2010-03-02 | 2010-08-04 | 江苏大学 | High-precision elastic tapered bore rolling device of cone sealing pipe joint |
| CN104097022A (en) * | 2014-06-30 | 2014-10-15 | 南京皓威机械有限公司 | Rolling cutter bit |
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| JPS5247870A (en) * | 1975-10-14 | 1977-04-16 | Hitachi Plant Eng & Constr Co | Inner surface knurling tool |
| JPH10225825A (en) * | 1997-02-13 | 1998-08-25 | U Mold:Kk | Strength increasing method of aluminium wheel |
| CN201175816Y (en) * | 2008-03-20 | 2009-01-07 | 比亚迪股份有限公司 | Point pressing type processing cutting tool |
| CN201519858U (en) * | 2009-10-27 | 2010-07-07 | 鞍钢重型机械有限责任公司 | Plane rolling device |
| CN201644627U (en) * | 2010-03-19 | 2010-11-24 | 西北工业大学 | Mouldless progressive forming tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101791756A (en) * | 2010-03-02 | 2010-08-04 | 江苏大学 | High-precision elastic tapered bore rolling device of cone sealing pipe joint |
| CN104097022A (en) * | 2014-06-30 | 2014-10-15 | 南京皓威机械有限公司 | Rolling cutter bit |
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