CN103143881A - Low-resistance rolling polishing method - Google Patents
Low-resistance rolling polishing method Download PDFInfo
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- CN103143881A CN103143881A CN201310022397XA CN201310022397A CN103143881A CN 103143881 A CN103143881 A CN 103143881A CN 201310022397X A CN201310022397X A CN 201310022397XA CN 201310022397 A CN201310022397 A CN 201310022397A CN 103143881 A CN103143881 A CN 103143881A
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- milled head
- ball
- spheroid
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Abstract
The invention belongs to a method for performing polishing strengthening on the surface of a metal material, in particular to a low-resistance rolling polishing strengthening method. The method comprises the following steps of: placing a high-strength and high-hardness ball into a rolling head cavity; acting on one face of the ball by using a high-pressure liquid under certain pressure intensity above MPa; contacting the other face of the ball with the metal material in a point contact way to generate a higher pressure so as to reach the degree of metal plastic deformation; and driving the cavity to move so as to drive the ball to move so as to realize rolling polishing strengthening on the surface of the metal material. The ball can move flexibly in the rolling head cavity, so that equal pressure can act on an extruding surface, and the moving resistance of a processing head is the moving resistance of the ball in a hydraulic suspension state. The liquid pressure and the radius of the ball are changed to adapt to ball rolling under different pressures. Digital control is performed on the movement of the rolling head cavity, so that digital control over the rolling and polishing strengthening can be realized. A multi-point symmetrically-designed rolling head is adopted on the previous basis, so that the reaction thrust is balanced, and the aim of automatically adapting to section strengthened polishing in a ball radius magnitude jumping range is fulfilled.
Description
Technical field
The invention belongs to the surface engineering technology of material, relate to the new method of metal material surface being carried out polishing and strain hardening.
Background technology
In order to solve that hole, groove inner surface or tenon outer surface to the surface of the sheet metal structural key position of metal parts or large thickness structure pushes reinforcement or polishing and a kind of new process of developing.Metal material roll extrusion polishing is a cold working process, can change material surface residual stress and roughness state, improve part fatigue life, can be used for improving long service metal parts under the pulsating stress operating mode, as the anti-fatigue performance of the parts such as aerial engine fan and compressor blade, aircraft fuselage structure spare, gear train assembly, tenon tongue-and-groove binding site.
Shot peening strengthening is countless small circular to be called medium high speed and the continuous injection of shot, beats piece surface, makes surface of the work material generation elastic-plastic deformation and presents residual compressive stress.Because when every shot clashes on metal parts, beat the surface just like a miniature rod is beaten, beat out little impression or depression.Countless depressions overlap to form uniform residual compressive stress layer.Finally, part has improved fatigue resistance dramatically under the compressive stress layer protection, extended the trouble free service life-span.
The shot peening strengthening expense is low, but shot peening strengthening can not obtain higher Surface Machining precision, can not obtain darker residual compressive stress layer, can not obtain in addition compression zone accurately.Hole extruding at present, finish rolling hardening can obtain the surface of smoother, but extruding, roll extrusion are treated surface and the appointed condition of reinforcement and are required height, can only carry out for the surface of revolution of rule, and the extruding plug or pole will with squeezed pressure surface close fit, not so affect the roll extrusion effect.
Purpose of the present invention:
Propose that a kind of new expense is low, easy to operate, the roll extrusion finishing method of lower resistance, to utilize the s lower sphere roll in the metal surface or slide, the technology and equipment that reaches reinforcement and polishing metal material surface improves surface roughness and the residual stress state of part specific region, thereby improves the fatigue life of part.
Advantage of the present invention:
In the scope of beating more greatly, keep pressure constant in moving up and down process due to ball, milled head self adaptation profile, need not to require machined surface is very regular plane or the surface of revolution; Pressure is determined by fluid pressure and bulb diameter, but flexible modulation; The moving resistance of milled head is very little, and under hydraulic pressure suspension, resistance almost can be ignored, just the ball resistance to rolling of compressive plane; Can adopt the Axisymmetric Spherical fashion of extrusion to realize equilibrium of forces to special profile, the complete self adaptation profile of processing head; The processing rear surface can reach polishing effect, plays the squeezing action of top layer densification, can also obtain surface compress residual stresses and improve fatigue behaviour.
Can realize easily intensive treatment is carried out in the specific region.Efficiently, expense is low, can be used for complex surface in a lot of situations, strength and the precision of simple manipulator just can satisfy the processing request of this patent scheme, just can hold processing head the metal surface is processed.
Summary of the invention:
this patent is different from shot peening strengthening and finish rolling hardening, it is a kind of lower resistance roll extrusion polishing intensifying method, with high strength, the milled head spheroid of high rigidity is placed in the milled head cavity, one of milled head cavity is connected with highly pressurised liquid pipe less than the milled head sphere diameter, milled head cavity other end size is slightly larger than the milled head spheroid, but milled head spheroid Free-rolling and slip, utilization has the highly pressurised liquid (aqueous solution of lubrication, oil or other solution) with large pressure action more than MPa in milled head spheroid one side (as steel ball, glass marble, Ceramic Balls or other hardness intensity surpass the material of part to be processed) on, milled head spheroid another side contacts with metal material point and produces more high pressure to reach the degree of metal plastic deformation, drive the milled head cavity and move drive milled head spheroid motion (roll or slide), the milled head spheroid rolls at metal material surface and completes polishing and reinforcement.Due to the milled head spheroid milled head cavity inner high voltage fluid pressure and lubricated under vibration flexibly, so even milled head cavity movement locus and metal material surface to be processed have the gap error of radius of a ball magnitude, also can guarantee has equal pressure-acting on squeezed pressure surface always, realizes the self-adaptation type mirror polish reinforcement in radius magnitude (as the millimeter magnitude) scope of beating of milled head spheroid.Resistance when the milled head cavity moves is also the spheroid dynamic resistance under the hydraulic pressure suspension state, so resistance is very little.Adapt to roll extrusion polishing and the reinforcement of different pressures by the radius that changes s and milled head spheroid.Control by the line number word that moves forward into to the milled head cavity that can to realize that the roll extrusion polishing is strengthened digital control.
This patent further adopts the milled head cavity of multiple spot symmetric design scheme one example (8) on above basis, thereby make the propulsive thrust balance, the milled head spheroid is symmetrical in the milled head cavity, and the roll extrusion polishing only need drive the plane of symmetry (7) of working arm in the milled head cavity when strengthening upper mobile.
Operation principle of the present invention:
Because acting on ball one end with the area in ball cross section, liquid pressure produces pressure, the other end produces squeezing action with ball and millet cake contact form, be easy to produce plastic deformation, liquid in cavity lubricates for the ball rolling produces simultaneously, is that the ball vibration produces support, can realize the effect of roll extrusion polishing, and can regulate pressure and adapt to profile, adopting symmetrical pressure head design more can reduce resistance.Suppose: R=1.5mm, imported hydraulic P
1≈ 7MPa, outlet hydraulic pressure P
2Under open state near 0, squeeze pressure F=(P
1-P
2) π R
2=49.5N is equivalent to 5kg power, so the propulsive thrust of processing head is very little, for a lot of manipulators or other motion without any problem.But under this pressure, hypothesis sphere and metal material produce the roll extrusion hole of h=10 μ m, and radius is cheated in roll extrusion
Contact area just has the squeeze pressure of 1GPa, and enough a variety of materials produce plastic deformation, reaches plastic deformation extruding polishing enhancement purpose.
The specific embodiment of the present invention:
highly pressurised liquid pipe (6) is connected with working arm (5), highly pressurised liquid (3) by highly pressurised liquid pipe (6) inject milled head cavity (2) hole slot (hole slot stiff end diameter less than the diameter of milled head spheroid (1) with restriction milled head spheroid (1) motion, the movable end slightly larger in diameter is in the diameter δ of milled head spheroid (1), make freely activity of milled head spheroid (1)), highly pressurised liquid (3) acts on the milled head spheroid (1) that is preset in hole slot, the hole slot of the upper milled head cavity (2) of working arm (5) drives milled head spheroid (1) and moves with certain speed, make the milled head spheroid (1) of additional high-pressure contact the generation plastic deformation with metal material to be processed (4) surface point.(require: D＜R)
Scheme:
1. can adopt repeatedly rectilinear motion mode of single ball to the plane, realize large-area reinforcement, the distance of two winding displacements is the 10um-100um left and right, as Fig. 1.Also can adopt many balls spread pattern to realize strengthening, similar row ploughs mode, as Fig. 2.Also can adopt both mixed forms.
2. the curved surface that irregular curve is extended or be rotarily formed can adopt Fig. 2 mode to carry out the roll extrusion polishing by the approximate moulding trajectory alignment milled head spheroid (1) of irregular curved surface, realizes that by scheme 1 large tracts of land strengthens;
3. the symmetrical components such as flank of tooth outer wall or tongue-and-groove inwall are adopted symmetrical roll extrusion mode, the processing head that making and the flank of tooth or tongue-and-groove shape adapt to is realized the large tracts of land reinforcement by scheme 1;
4. select different bulb diameters, fluid pressure, rolling speed to reach the surface state of wishing acquisition.
Description of drawings:
1. Fig. 1, Fig. 2 are the scheme key diagrams.
2. Fig. 3 is umbilical point contact roll extrusion polishing principles figure.
3. Fig. 4 is panel beating twin polishing schematic diagram.
4. Fig. 5 is inwall plane of symmetry polishing schematic diagram.
5. Fig. 6 is internal tooth plane of symmetry polishing schematic diagram.
6. Fig. 7 is external tooth plane of symmetry polishing schematic diagram.
7. Fig. 8 is multiple spot symmetric design scheme one example.
Claims (3)
1. lower resistance roll extrusion polishing intensifying method, its elementary cell is milled head cavity (2), with high strength, the spheroid of high rigidity (1) is placed in the milled head cavity (2), milled head cavity (2) one ends are connected highly pressurised liquid with pipeline less than sphere diameter, milled head cavity (2) other end size is slightly larger than milled head spheroid (1), milled head spheroid (1) but Free-rolling and slip, the highly pressurised liquid with lubrication (the 3) (aqueous solution that pressure is adjustable, oil or other solution) with large pressure action more than MPa on spheroid (1), (milled head spheroid (1) size is determined according to actual needs, material is steel ball, glass marble, Ceramic Balls or other hardness intensity surpass the material of metal material to be processed (4), milled head spheroid (1) another side contacts with metal material (4) point to be processed and produces more high pressure to reach the degree that makes metal material (4) that plastic deformation occur, drive milled head cavity (2) mobile drive milled head spheroid (1) motion (roll or slide), make the milled head spheroid (1) under high pressure conditions carry out tumbling and reinforcement to metal material surface.
2. adopt a plurality of symmetrical milled head spheroids (1) on the basis of claim 1, the roll extrusion polishing of realization to the isostructural lower resistance self adaptation of tongue-and-groove profile, in the milled head cavity, (2) are adopted and are adapted to the shape for the treatment of reinforced structure, milled head spheroid (1) (2) in the milled head cavity is upper symmetrical, and the roll extrusion polishing only need drive working arm (5) plane of symmetry (7) of (2) in the milled head cavity when strengthening upper mobile.
3. the system integration goes out roll extrusion polishing strengthening device on claim 1 or 2 bases, this equipment can be regulated the pressure of high pressure (more than MPa) liquid, the milled head spheroid (1) that adapts to different size, by adopting digital control approach to drive the automation mechanized operation that milled head cavity (2) realizes that metal material specific region surface rolling polishing is strengthened, adopt mode and the overlapping mode of back and forth movement to realize also can adopting the milled head of array distribution to realize many lines of a roll extrusion by putting line, being strengthened to the large tracts of land of face by line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022397XA CN103143881A (en) | 2013-01-22 | 2013-01-22 | Low-resistance rolling polishing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310022397XA CN103143881A (en) | 2013-01-22 | 2013-01-22 | Low-resistance rolling polishing method |
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| CN103143881A true CN103143881A (en) | 2013-06-12 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586478A (en) * | 2016-02-25 | 2016-05-18 | 上海大学 | Device for removing powder added material production stress in real time by rolling method |
| CN106624594A (en) * | 2015-10-28 | 2017-05-10 | 波音公司 | Deep rolling forming |
| CN106914825A (en) * | 2017-03-27 | 2017-07-04 | 宁波工程学院 | A kind of water jet precise grinding process |
| CN106965094A (en) * | 2017-03-27 | 2017-07-21 | 宁波工程学院 | A kind of water jet accurate grinding equipment |
| CN106985057A (en) * | 2017-05-03 | 2017-07-28 | 宁波工程学院 | A kind of micro- texture former of inner surface based on jet |
| CN106985017A (en) * | 2017-05-03 | 2017-07-28 | 宁波工程学院 | A kind of micro- texture former of inner surface |
| CN107081684A (en) * | 2017-03-27 | 2017-08-22 | 宁波工程学院 | A kind of micro- texture former in surface based on jet |
| CN107116455A (en) * | 2017-05-03 | 2017-09-01 | 宁波工程学院 | A kind of micro- texture former of inner surface self-centering based on jet |
| CN107984376A (en) * | 2016-10-27 | 2018-05-04 | 无锡威孚施密特动力系统零部件有限公司 | A kind of high pressure gasoline pipe heading sealing area rolling glossing |
| CN108044299A (en) * | 2018-02-07 | 2018-05-18 | 陕西超克能机电科技发展有限公司 | For lathe can tool changing excess sound pressure electro-optical device |
| CN111304651A (en) * | 2020-03-19 | 2020-06-19 | 上海樱侬科技股份有限公司 | Eccentric shaft surface hardening method |
| CN112080616A (en) * | 2020-09-14 | 2020-12-15 | 江麓机电集团有限公司 | Three-symmetrical point hydraulic rolling head |
| CN113843588A (en) * | 2021-09-29 | 2021-12-28 | 中南大学 | Hole extrusion strengthening preparation method for prolonging fatigue life of aluminum alloy structure wallboard |
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| US3735615A (en) * | 1970-05-19 | 1973-05-29 | J Shneider | Method of making grooves on surface of articles and device for its realization |
| US4947668A (en) * | 1988-08-02 | 1990-08-14 | Wilhelm Hegenscheidt Gmbh | Rolling milling tool |
| DE19534631A1 (en) * | 1995-09-19 | 1997-03-20 | Hegenscheidt Werkzeugtechnik G | Method of machining surfaces with hydraulically mounted roller |
| JP2004257563A (en) * | 2003-02-26 | 2004-09-16 | Hegenscheidt-Mfd Gmbh & Co Kg | Deep rolling method for radius part or fillet part |
| CN1974113A (en) * | 2006-12-01 | 2007-06-06 | 华南理工大学 | Double hydraulic rolling tool with equal rolling force |
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2013
- 2013-01-22 CN CN201310022397XA patent/CN103143881A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735615A (en) * | 1970-05-19 | 1973-05-29 | J Shneider | Method of making grooves on surface of articles and device for its realization |
| US4947668A (en) * | 1988-08-02 | 1990-08-14 | Wilhelm Hegenscheidt Gmbh | Rolling milling tool |
| DE19534631A1 (en) * | 1995-09-19 | 1997-03-20 | Hegenscheidt Werkzeugtechnik G | Method of machining surfaces with hydraulically mounted roller |
| JP2004257563A (en) * | 2003-02-26 | 2004-09-16 | Hegenscheidt-Mfd Gmbh & Co Kg | Deep rolling method for radius part or fillet part |
| CN1974113A (en) * | 2006-12-01 | 2007-06-06 | 华南理工大学 | Double hydraulic rolling tool with equal rolling force |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624594A (en) * | 2015-10-28 | 2017-05-10 | 波音公司 | Deep rolling forming |
| CN106624594B (en) * | 2015-10-28 | 2020-06-26 | 波音公司 | Deep roll forming |
| CN105586478A (en) * | 2016-02-25 | 2016-05-18 | 上海大学 | Device for removing powder added material production stress in real time by rolling method |
| CN107984376A (en) * | 2016-10-27 | 2018-05-04 | 无锡威孚施密特动力系统零部件有限公司 | A kind of high pressure gasoline pipe heading sealing area rolling glossing |
| CN107081684B (en) * | 2017-03-27 | 2019-03-22 | 宁波工程学院 | A kind of micro- texture former in surface based on jet stream |
| CN106965094A (en) * | 2017-03-27 | 2017-07-21 | 宁波工程学院 | A kind of water jet accurate grinding equipment |
| CN107081684A (en) * | 2017-03-27 | 2017-08-22 | 宁波工程学院 | A kind of micro- texture former in surface based on jet |
| CN106914825A (en) * | 2017-03-27 | 2017-07-04 | 宁波工程学院 | A kind of water jet precise grinding process |
| CN107116455B (en) * | 2017-05-03 | 2019-02-22 | 宁波工程学院 | A kind of micro- texture former of inner surface self-centering based on jet stream |
| CN106985057B (en) * | 2017-05-03 | 2018-12-28 | 宁波工程学院 | A kind of micro- texture former of inner surface based on jet stream |
| CN106985017A (en) * | 2017-05-03 | 2017-07-28 | 宁波工程学院 | A kind of micro- texture former of inner surface |
| CN106985057A (en) * | 2017-05-03 | 2017-07-28 | 宁波工程学院 | A kind of micro- texture former of inner surface based on jet |
| CN106985017B (en) * | 2017-05-03 | 2019-07-19 | 宁波工程学院 | A kind of micro- texture former of inner surface |
| CN107116455A (en) * | 2017-05-03 | 2017-09-01 | 宁波工程学院 | A kind of micro- texture former of inner surface self-centering based on jet |
| CN108044299A (en) * | 2018-02-07 | 2018-05-18 | 陕西超克能机电科技发展有限公司 | For lathe can tool changing excess sound pressure electro-optical device |
| CN111304651A (en) * | 2020-03-19 | 2020-06-19 | 上海樱侬科技股份有限公司 | Eccentric shaft surface hardening method |
| CN112080616A (en) * | 2020-09-14 | 2020-12-15 | 江麓机电集团有限公司 | Three-symmetrical point hydraulic rolling head |
| CN113843588A (en) * | 2021-09-29 | 2021-12-28 | 中南大学 | Hole extrusion strengthening preparation method for prolonging fatigue life of aluminum alloy structure wallboard |
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Application publication date: 20130612 |