CN103111791A - Vane surface ultrasonic wave machining process - Google Patents
Vane surface ultrasonic wave machining process Download PDFInfo
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- CN103111791A CN103111791A CN2013100314536A CN201310031453A CN103111791A CN 103111791 A CN103111791 A CN 103111791A CN 2013100314536 A CN2013100314536 A CN 2013100314536A CN 201310031453 A CN201310031453 A CN 201310031453A CN 103111791 A CN103111791 A CN 103111791A
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Abstract
The invention provides a vane surface ultrasonic wave machining process which comprises the following steps: (1) installing an ultrasonic wave cutter on a main shaft of a numerical control milling machine; (2) enabling surface roughness of a work-piece to reach a Ra value no larger than 6.3um before the surface of the work-piece is machined in an ultrasonic wave mode; (3) clamping vanes on a rotating shaft of a work table of the numerical control milling machine; and (4) starting the numerical control milling machine, operating the work table of the numerical control milling machine, enabling the vanes to do X-direction and Y-direction motion along with the work table and rotate along with the rotating shaft on the work table, enabling ultrasonic wave cutter to contact the surfaces of the vanes by means of Z-direction motion of the main shaft, applying pressure on the vanes in the machining process all the time, and enabling the ultrasonic wave cutter to do the Z-direction motion along with the main shaft of the numerical control milling machine. The vane surface ultrasonic wave machining process specifically formulates clamping ways and process parameters when the vanes are machined on the numerical control milling machine in an ultrasonic wave mode, improves machining efficiency of the vanes, does not cause environment pollution, is low in expense, ensures that ultrasonic wave machining is carried out under an optimum state, and improves surface quality of the vanes.
Description
Technical field
The present invention relates to a kind of process of blade surface being carried out ultrasonic wave processing on CNC milling machine (having the four above linkage functions of axle), belong to the ultrasonic metal surface processing technique field.
Background technology
Blade all can be used on a lot of plant equipment, and as various pump classes, fan, steam turbine, the hydraulic turbine, aero-engine and screw etc., its blade profile is partly the working portion of blade.The blade profile of blade is on-plane surface both, the also non-face of cylinder, but irregular curved surface.The crudy of blade surface (precision, hardness, surface roughness and texture requirement etc.) has important impact to important indicators such as the operational efficiency of equipment, service lifes.
Blade is to form by Digit Control Machine Tool (multi-shaft numerical control milling machine) fine finishining, and a plurality of coordinates of the main shaft of Digit Control Machine Tool and workbench are done linear moving interpolation simultaneously, makes cutter space tracking feed on request, completes corresponding complex-curved processing.And the surface ratio of the blade that common milling process processes is more coarse, blade surface is fair.
Can obtain low roughness value and high surface quality and ultrasonic wave processing is carried out in the metal surface, and have the advantages that efficient is high, cost is low.Ultrasonic wave processing to the metal surface is completed by ultrasonic cutter, different ultrasonic cutters can be processed difform surface, ultrasonic cutter can be directly installed on the main shaft or knife rest of corresponding lathe, or be arranged on supersonic machining apparatus, complete the ultrasonic wave processing to surface of workpiece under the drive of lathe supersonic machining apparatus.Ultrasonic cutter also can be arranged on as other cutter in the tool magazine of machining center or CNC milling machine, as disclosed in Chinese patent literature CN102259271A " installation method of a kind of ultrasonic cutter on lathe ", use the same with other cutter carried out ultrasonic wave processing to surface of the work.But, " a kind of ultrasonic cutter is at the installation method on lathe " only has been to provide the installation question on the ultrasonic cutter work in-process heart or CNC milling machine, do not provide technical process and the best technological parameter how to process, the operator just rule of thumb selects, can not make ultrasonic wave processing reach optimum efficiency, and can not guarantee the security that operates.
Chinese patent literature CN101941082A discloses a kind of " Ultrasonic Machining of large cylinder diameter hydraulic cylinder rod class outer surface ", comprises following processing step in sequence: the ultrasonic cutter assembly is contained on the knife rest of machine tool; Cutter head is arranged on the ultrasonic cutter assembly, adjusts ball; After adjusting ball, the whether starting of oscillation of checking cutter head; After having checked the ultrasonic cutter assembly, amesdial is contained on dial framework, then amesdial is depressed 0.1mm to ultrasonic cutter assembly bonnet, and adjust dial plate on zero-bit, so that read the size of ball and surface of the work static pressure; Processing parts.CN101224532 discloses a kind of " power station great mirror board and mirror face hkusm machining technique ", comprises the following steps: the basic size that (1) adopts suitable cutter to produce to meet drawing requirement and form and position tolerance and surface roughness reach the runner plate of 2.3 μ m～2.8 μ m; (2) adjust cutting parameter: the linear velocity of bold and unconstrained gram energy tool sharpening is adjusted into 39m/min, and feeding speed is adjusted into 0.3mm/r; (3) use bold and unconstrained gram to implement processing to the runner plate minute surface that step (1) is processed to form by cutter.
The process of mentioning in above-mentioned Ultrasonic Machining and technological parameter all propose for specific workpiece, can not be applicable on CNC milling machine the ultrasonic wave processing to blade.
Summary of the invention
The present invention is directed to the deficiency that existing blade exists aspect ultrasonic wave processing, a kind of blade surface supersonic machining process that can improve blade processing precision and surface quality is provided.
Blade surface supersonic machining process of the present invention comprises the following steps:
(1) ultrasonic cutter is arranged on the main shaft of CNC milling machine, connects the cable between ultrasonic cutter and external ultrasound wave producer;
(2) surface of the work is carrying out the ultrasonic wave first being processed, and its surface roughness Ra value is not more than 6.3 μ m;
(3) the blade clamping on the rotating shaft of CNC milling machine workbench;
(4) start CNC milling machine, the main shaft of CNC milling machine (main shaft can rotate also and can not rotate) drives ultrasonic cutter and does Z-direction motion (moving up and down), operating numerical control milling machine table (workbench is according to moving by the program of blade shape establishment in advance), make blade do X-direction and Y-direction motion (horizontal and vertical motion) with workbench, and rotate with the rotating shaft on workbench, Z-direction motion by main shaft makes ultrasonic cutter contact with blade surface, and all the time blade is applied the pressure of 30Kg-250Kg in process, ultrasonic cutter is done the Z-direction motion with the CNC milling machine main shaft, the linear velocity of ultrasonic cutter is 0.5m/min-10m/min, the amount of feeding of ultrasonic cutter is 0.05mm-0.85mm.
In step (4), ultrasonic cutter can be to contact by normal direction with blade surface, to guarantee the effect uniformity after the vanes ultrasonic wave is processed.
After by above-mentioned technique, blade surface being carried out ultrasonic wave processing, the surface roughness value that reaches after ultrasonic wave processing is below Ra0.2, and wearability improves more than 50%, improves fatigue life more than 6 times.
The present invention carries out ultrasonic wave and adds installation way, the technological parameter in man-hour and carried out clear and definite formulation on CNC milling machine to blade, improved the working (machining) efficiency of blade, do not produced environmental pollution, expense is low, guaranteed that ultrasonic wave processing carries out in the best condition, improved the surface quality of blade.
The specific embodiment
CNC milling machine blade surface supersonic machining process of the present invention, the installation of ultrasonic cutter used can be with reference to according to CN102259271A disclosed " installation method of a kind of ultrasonic cutter on lathe ", and the cutter head on ultrasonic cutter can adopt " a kind of cantilevered polishing cutter head " or the CN201357303 disclosed " ballpoint tool bit for ultrasonic machining " of CN201089076.The processing of blade surface ultrasonic wave, specifically comprise the following steps: (1) is according to the method for mentioning in CN102259271A disclosed " installation method of a kind of ultrasonic cutter on lathe ", ultrasonic cutter is arranged on CNC milling machine, specifically referring to the embodiment 2 in its specification and embodiment 3.Cable between ultrasonic cutter and external ultrasound wave producer is connected firmly.
With ultrasonic cutter as cutter used on a machining center, the shell rear portion of ultrasonic cutter is made the same with the structure of cutter for same on machining center, ultrasonic cutter can be placed in the tool magazine of machining center, the manipulator by machining center will be changed between the main shaft of the ultrasonic cutter work in-process heart and tool magazine.
Or with ultrasonic cutter as a milling cutter type, the milling handle structure is made at the shell rear portion of ultrasonic cutter.
(2) surface of the work is carrying out the ultrasonic wave first being processed, and its surface roughness reaches the Ra value and is not more than 6.3 μ m;
(3) the blade clamping on the rotating shaft of CNC milling machine workbench, this rotating shaft drives workpiece and rotates in process, adopts the installation way on folder one top, the installation way when on CNC milling machine, blade being carried out Milling Process is the same;
(4) start CNC milling machine, the main shaft of CNC milling machine (main shaft can rotate also and can not rotate) drives ultrasonic cutter and does Z-direction motion (moving up and down), the operating numerical control milling machine table is according to the program operation of pressing in advance the blade shape establishment, make blade do X-direction and Y-direction motion (horizontal and vertical motion) with workbench, and rotate with the rotating shaft on workbench, make blade and ultrasonic cutter contact by normal direction as far as possible that (a plurality of coordinates of the main shaft of Digit Control Machine Tool and workbench are done linear moving interpolation simultaneously, make cutter by the space tracking feed of blade requirement), thereby guarantee the effect uniformity after the processing of vanes ultrasonic wave.
Z-direction motion by main shaft makes ultrasonic cutter contact with blade surface, and all the time blade is applied certain pressure in process, and pressure limit is the 30-250 kilogram.Choose in the pressure according to the form below that for example subordinate's material is suitable for:
| Material | Pressure (kg) |
| Steel and alloy thereof | 120±25 |
| Copper alloy, aluminium alloy | 80±25 |
Ultrasonic cutter is made Z-direction motion, the linear velocity of ultrasonic cutter (speed that ultrasonic cutter moves along surface of the work) 0.5m/min-10m/min with the CNC milling machine main shaft.
The amount of feeding of ultrasonic cutter (is called step pitch in the CNC milling machine programming, each step pitch namely refers to the amount of feeding of ultrasonic cutter, namely blade often turn around distance that rear cutter moves or often turn half-turn after the distance that moves of cutter, first process a face if during blade processing be, reprocess another face, at this moment be exactly that blade often turns the distance that ultrasonic cutter moves after half-turn), but select according to the difference according to the form below of the cutter head that adopts on ultrasonic cutter:
| The cutterhead form | The amount of feeding (mm) |
| The ball point type cutter head | 0.05-0.15 |
| The cantilevered cutter head | 0.10-0.85 |
In table, the cantilevered cutter head refers to CN201089076 disclosed " a kind of cantilevered polishing cutter head ", and the ball point type cutter head refers to CN201357303 disclosed " ballpoint tool bit for ultrasonic machining ".
Claims (3)
1. blade surface supersonic machining process is characterized in that: comprise the following steps:
(1) ultrasonic cutter is arranged on the main shaft of CNC milling machine, connects the cable between ultrasonic cutter and external ultrasound wave producer;
(2) surface of the work is carrying out the ultrasonic wave first being processed, and its surface roughness Ra value is not more than 6.3 μ m;
(3) the blade clamping on the rotating shaft of CNC milling machine workbench;
(4) start CNC milling machine, the main shaft of CNC milling machine drives ultrasonic cutter and does the Z-direction motion, the operating numerical control milling machine table, make blade do X-direction and Y-direction motion with workbench, and rotate with the rotating shaft on workbench, Z-direction motion by main shaft makes ultrasonic cutter contact with blade surface, and all the time blade is applied the pressure of 30Kg-250Kg in process, ultrasonic cutter is done the Z-direction motion with the CNC milling machine main shaft, the linear velocity of ultrasonic cutter is 0.5m/min-10m/min, and the amount of feeding of ultrasonic cutter is 0.05mm-0.85mm.
2. blade surface supersonic machining process according to claim 1 is characterized in that: in described step (4), ultrasonic cutter is to contact by normal direction with blade surface.
3. blade surface supersonic machining process according to claim 1 is characterized in that: in described step (4), ultrasonic cutter to the blade applied pressure, is chosen according to the material according to the form below:
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100314536A CN103111791A (en) | 2013-01-28 | 2013-01-28 | Vane surface ultrasonic wave machining process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100314536A CN103111791A (en) | 2013-01-28 | 2013-01-28 | Vane surface ultrasonic wave machining process |
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| CN103111791A true CN103111791A (en) | 2013-05-22 |
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| CN2013100314536A Pending CN103111791A (en) | 2013-01-28 | 2013-01-28 | Vane surface ultrasonic wave machining process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191156A (en) * | 2014-09-12 | 2014-12-10 | 哈尔滨工业大学 | Method for using ultrasonic cavitation to machine panel surface micro-pits |
| CN105734233A (en) * | 2016-03-08 | 2016-07-06 | 山东华云机电科技有限公司 | Ultrasound enhancing method for prolonging fatigue life of metal workpiece and application of method |
| CN109465680A (en) * | 2018-12-17 | 2019-03-15 | 中国航发动力股份有限公司 | A method of it is ultrasound-enhanced for integral blade disk or blade profile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH033707A (en) * | 1989-05-29 | 1991-01-09 | Kurashiki Kikai Kk | Method for treating surface of main shaft taper surface for rotational machine tool |
| CN101480733A (en) * | 2009-01-22 | 2009-07-15 | 山东华云机电科技有限公司 | Ultrasonic metallic surface processing device for borer |
| CN101941082A (en) * | 2010-09-20 | 2011-01-12 | 中煤邯郸煤矿机械有限责任公司 | Ultrasonic wave processing method for outer surface of hydraulic cylinder lever with large cylinder diameter |
| CN102029513A (en) * | 2010-09-28 | 2011-04-27 | 洛阳世必爱特种轴承有限公司 | Convexity modifying method for ball track |
| CN102490089A (en) * | 2011-12-14 | 2012-06-13 | 山东华云机电科技有限公司 | Ultrasonic machining device for outer circular surface |
| CN102658454A (en) * | 2012-04-28 | 2012-09-12 | 山东华云机电科技有限公司 | Supersonic machining method of circular-arc face of engine valve |
-
2013
- 2013-01-28 CN CN2013100314536A patent/CN103111791A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH033707A (en) * | 1989-05-29 | 1991-01-09 | Kurashiki Kikai Kk | Method for treating surface of main shaft taper surface for rotational machine tool |
| CN101480733A (en) * | 2009-01-22 | 2009-07-15 | 山东华云机电科技有限公司 | Ultrasonic metallic surface processing device for borer |
| CN101941082A (en) * | 2010-09-20 | 2011-01-12 | 中煤邯郸煤矿机械有限责任公司 | Ultrasonic wave processing method for outer surface of hydraulic cylinder lever with large cylinder diameter |
| CN102029513A (en) * | 2010-09-28 | 2011-04-27 | 洛阳世必爱特种轴承有限公司 | Convexity modifying method for ball track |
| CN102490089A (en) * | 2011-12-14 | 2012-06-13 | 山东华云机电科技有限公司 | Ultrasonic machining device for outer circular surface |
| CN102658454A (en) * | 2012-04-28 | 2012-09-12 | 山东华云机电科技有限公司 | Supersonic machining method of circular-arc face of engine valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191156A (en) * | 2014-09-12 | 2014-12-10 | 哈尔滨工业大学 | Method for using ultrasonic cavitation to machine panel surface micro-pits |
| CN105734233A (en) * | 2016-03-08 | 2016-07-06 | 山东华云机电科技有限公司 | Ultrasound enhancing method for prolonging fatigue life of metal workpiece and application of method |
| CN105734233B (en) * | 2016-03-08 | 2018-02-16 | 山东华云机电科技有限公司 | A kind of ultrasound-enhanced method and its application for improving metal works fatigue life |
| CN109465680A (en) * | 2018-12-17 | 2019-03-15 | 中国航发动力股份有限公司 | A method of it is ultrasound-enhanced for integral blade disk or blade profile |
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Application publication date: 20130522 |