CN102294524A - High-speed reciprocating wire feeding immersion type electric spark wire cutting machine tool - Google Patents
High-speed reciprocating wire feeding immersion type electric spark wire cutting machine tool Download PDFInfo
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- CN102294524A CN102294524A CN2011102567821A CN201110256782A CN102294524A CN 102294524 A CN102294524 A CN 102294524A CN 2011102567821 A CN2011102567821 A CN 2011102567821A CN 201110256782 A CN201110256782 A CN 201110256782A CN 102294524 A CN102294524 A CN 102294524A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
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Abstract
The invention discloses a high-speed reciprocating wire feeding immersion type electric spark wire cutting machine tool. The electric spark wire cutting machine tool comprises a body (10), an upper dragging plate (18), a lower dragging plate (20) and a wire conveying system, wherein the wire conveying system comprises a wire conveying dragging plate (23), a wire cylinder (25) and a wire cylinder motor (27). The electric spark wire cutting machine tool is characterized in that: the upper dragging plate (18) is arranged at the rear side of the body (10) and moves in the X direction or the Y direction, and the wire conveying system is arranged on the upper dragging plate (18); the lower dragging plate (20) can be arranged below the upper dragging plate (18), can also be arranged below a liquid tank (5), and moves in the Y direction or the X direction; and the upper dragging plate and the lower dragging plate move together to finish locus synthesis of a machined workpiece in the X and Y directions, an insulating seat (7) is arranged in the liquid tank (5), a workbench (9) is fixed on the insulating seat (7), a wire rack (3) is positioned in the liquid tank (5) and connected with the upper dragging plate (18) through an insulating block (17), electrode wire guide wheels (8) are arranged on the wire rack (3) and the upper dragging plate (18), an electrode wire (28) goes around the wire cylinder (25) and a plurality of guide wheels (8) as well as upper and lower water spray nozzles (11, 13) to form a wire feeding system, and a workpiece (12) is cut. The electric spark wire cutting machine tool has the advantages of simple structure, low thermal deformation of the workpieces during machining, uniform machined surface quality, high precision and low cost.
Description
Technical field
The present invention relates to a kind of Wire-cut Electrical Discharge Machining equipment, especially a kind of high speed travelling wire Wire EDM (HSWEDM) adopts the discharge cutting processing lathe of immersion type (workpiece is immersed in the working solution).Specifically a kind of processing work can being immersed in the working solution, and can assist the hydrojet of certain pressure simultaneously, to improve the cooling uniformity of working solution to processing work, and the thermal deformation of minimizing workpiece processing, and can improve the stability of machining area wire electrode, finally reach the high speed to-and-fro thread immersion type electric spark linear cutting machine that improves work piece cut precision and other technic index.
Background technology
For high speed to-and-fro thread feed electric spark line cutting (HSWEDM), it adds the man-hour type of cooling and general adopt the working solution with certain electric conductivity stress-free to be cast in region of discharge and to adopt molybdenum filament be wire electrode, and (silk speed 6～10m/s) is cut (principle as shown in Figure 1) by two-way reciprocal high speed travelling wire.The general work platform drives the orbiting motion that workpiece carries out X, Y direction, and the periodicity that wire electrode is finished vertical direction moves back and forth at a high speed.Because workpiece is in the shelf depreciation heated condition in the process, therefore can produce certain deformation; And owing to adopt the stress-free working solution cast type of cooling, machining area can not be accomplished the cooling of uniformity during the motion of wire electrode up and down, and machined surface quality is inhomogeneous during the motion of wire electrode up and down; Inhomogeneous owing to wire electrode is vibrated the working solution that plays the excellent damping effect in addition, so the vibration of wire electrode also can produce bigger influence to machining accuracy.Therefore this cast type of cooling has embodied certain limitation in Precision Machining.Though the cost performance of high speed to-and-fro thread feed electric spark linear cutting equipment is higher, owing to be subjected to the influence of above-mentioned factor in the process, so the further raising of processing technology index is subjected to bigger restriction.
For the unidirectional wire of low speed, all adopted the mode of high pressure hydrojet to cool off cutting in the past, along with improving constantly that continuous advancement in technology and part processing require, the accurate at present unidirectional wire Wire EDM of low speed has all changed immersion liquid mode (also being accompanied by the hydrojet mode simultaneously) into and has processed, to improve surface quality, precision and the stability of processing.Though the unidirectional wire equipment of low speed machining accuracy height, its equipment and operating cost are very high, and generally speaking, the price of the unidirectional wire Wire EDM of a low speed equipment is more than 10～20 times of high speed to-and-fro thread feed electric spark line cutting.
Because the unidirectional wire electrical discharge machine tool of low speed possesses an automatic or semi-automatic function of wearing, therefore the arm that rolls off the production line can be designed to hermetically-sealed construction, roll off the production line arm and liquid bath can be finished sealing by flexible and hydrodynamic reciprocating sealing structure, thereby accomplish immersion liquid processing, and the cutting of traditional high speed to-and-fro thread feed electric spark line is owing to can't carry out the automatic or semi-automatic silk of wearing, need manually wear silk, therefore must leave the operating space of wearing silk at the arm that rolls off the production line, arm can't be accomplished sealing so roll off the production line, just difficult more with the sealing of liquid bath, therefore all adopt the cast-type or the liquid-spraying type type of cooling to carry out the local cooling processing of workpiece at present.
In sum, how to bring into play the advantage of the unidirectional wire Wire EDM of low speed immersion liquid processing, improve crudy, utilize simultaneously the low advantage of high speed to-and-fro thread feed electric spark wire-electrode cutting machine cost again, design and a kind of both are organically combined, bringing into play separately, the novel linear cutting equipment of speciality just becomes one of key technology that improves China's Wire EDM equipment processing technology index.
Summary of the invention
The objective of the invention is even at inhomogeneous cooling in existing high speed to-and-fro thread feed electric spark wire-electrode cutting machine (HSWEDM) process, the workpiece thermal deformation big, wire electrode produces vibration and causes problems such as the workpiece surface quality lack of homogeneity that cuts and cutting accuracy are affected, and designs a kind of high speed to-and-fro thread immersion type electric spark linear cutting machine.
Technical scheme of the present invention is:
A kind of high speed to-and-fro thread immersion type electric spark linear cutting machine, it comprise traditional high speed to-and-fro thread feed electric spark wire-electrode cutting machine with control system, the pulse power, lathe bed 10, go up planker 18, a planker 20 and a fortune silk system down, fortune silk system comprises fortune silk planker 23, silk tube 25 and wire cylinder motor 27, it is characterized in that the described planker 18 of going up is installed in lathe bed 10 rear sides, and do the motion of directions X or Y direction, a fortune silk system is installed on the planker 18; Following planker 20 can be installed in planker 18 times, also can be installed in liquid bath 5 times, and does the motion of Y direction or directions X; Last planker and following planker common actions, finish the track resultant motion of workpiece to be machined XY direction, be provided with insulating base 7 in the liquid bath 5, workbench 9 is fixed on the insulating base 7, coil holder 3 is arranged in liquid bath 5 and links to each other with last planker 18, coil holder 3 is done the motion of directions X or Y direction under the drive of last planker 18, on coil holder 3 and last planker 18, electrode-wire wheel 8 is installed, wire electrode 28 walks around silk tube 25 and a plurality of guide wheel 8 reaches water spout 11 up and down, 13 constitute a wire-moving system, and workpiece 12 cut, wire electrode 28 is connected with the negative pole of the pulse power, workpiece 12 is connected with the positive pole of the pulse power, in liquid bath 5, be provided with inlet 6 and the Liquid level adjusting valve 4 that has liquid outlet is installed, by the liquid level in the adjusting rod 32 adjusting liquid baths 5 of tank level control system 31.
The part insulating materials manufacturing that the whole of insulation board 17 or coil holder 3 is installed between described coil holder 3 and the last planker or immerses liquid, the head portion of coil holder 3 are installed has the structure 15,16 of U/V tapering to carry out the cutting of stretched or tapering.
Described immersion liquid groove 5 has the cell wall door in order to convenient installation workpiece 12 and wire electrode 28 that can open at least, and the described door that can open is by buckle 1 and adjacent cell wall fastening.
Described going up on the planker 18 is equipped with wire electrode tension governor motion 22.
That installs on the described coil holder 3 carries out being provided with filar guide in the top nozzle 13 of hydrojet cooling usefulness and the following nozzle 11 to wire electrode.
Described silk tube 25 links to each other with wire cylinder motor 27, and silk tube 25, wire cylinder motor 27 are installed on the fortune silk planker 23 simultaneously, and a fortune silk planker 23 is installed on the planker 18, and transporting on the planker 23 has organ cover 24; Silk tube protective cover 26 is installed on the silk tube 25.
On the described liquid bath 5 upper cover plate 29 is installed, upper cover plate 29 is provided with transparent windows 30.
Described inlet 6 and Liquid level adjusting valve 4 all link to each other with tank level control system 31.
Beneficial effect of the present invention:
The invention solves the problem that present high speed to-and-fro thread lathe adopts pouring type to cool off always, adopt the type of cooling of workpiece immersion type, and be aided with certain pressure hydrojet on demand, can improve the uniformity of workpiece processing cooling greatly, and because workpiece is immersed in the working solution, it is less to add workpiece thermal deformation in man-hour, simultaneously because working solution has good damping action to coil holder and wire electrode vibration, therefore the stability of machining area wire electrode can improve greatly, finally can improve work piece cut surface quality, cutting accuracy and cutting efficiency.Because machining area is in closed state, therefore play good shielding action, and can prevent that working solution from splashing adding the electromagnetic radiation energy that produces man-hour, keep good processing environment and reduce the processing noise.
The present invention can directly utilize existing or process through control system and the high frequency electric source of the HSWEDM that transforms, have method simple, be easy to realize, small investment, characteristics such as instant effect.
Description of drawings
Fig. 1 is existing high speed to-and-fro thread feed electric spark line incision principle figure.
Fig. 2 is one of high speed to-and-fro thread immersion type electric spark linear cutting machine structural representation of the present invention.
Fig. 3 is two of a high speed to-and-fro thread immersion type electric spark linear cutting machine structural representation of the present invention.
Among the figure:1 ' wire storage cylinder, 2 ' guide wheel, 3 ' molybdenum filament, 4 ' workpiece, 5 ' pulse power, under 6 ' water pump, 7 ' working solution.1-buckle 2-Qianmen 3-coil holder 4-level control valve and the liquid outlet 5-leakage-proof socket 6-inlet 7-insulating base 8-guide wheel 9-workbench 10-lathe bed 11-the upper water spout 14-side door 15-taper head V of water spout 12-workpiece 13-to 16-taper head U to 17-insulation board 18-upper planker 19-X planker 21-X direction guiding rail 22-governing mechanism of tension 23-wire transporting planker 24-organ cover 25-silk tube 26-silk tube baffle plate 27-wire cylinder motor 28-molybdenum filament 29-upper cover plate 30-observation window 31-water level control system 32-control stick under the handwheel 20-.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one.
As shown in Figure 2.
A kind of high speed to-and-fro thread immersion type electric spark linear cutting machine, it comprises traditional high speed to-and-fro thread feed electric spark wire-electrode cutting machine (HSWEDM) control system (same as the prior art), the pulse power (same as the prior art), buckle 1(can adopt conventional hasp structure), Qianmen 2, coil holder 3, level control valve and liquid outlet 4, liquid bath 5, inlet 6, insulating base 7, guide wheel 8, workbench 9, lathe bed 10, following water spout 11, workpiece 12, last water spout 13, side door 14, tapering head V is to 15, tapering head U is to 16, insulation board 17, last planker 18, X is to handwheel (Y does not demonstrate to handwheel) 19, following planker 20, X is to guide rail (Y does not demonstrate to guide rail) 21, governing mechanism of tension 22, fortune silk planker 23, organ cover 24, silk tube 25, silk tube baffle plate 26, wire cylinder motor 27, molybdenum filament 28, upper cover plate 29, observation window 30, water level control system 31 and control stick 32, the described planker 18 of going up is installed in down on the planker 20, following planker 20 is installed in the rear side of lathe bed 10, and the fortune silk system that is made up of silk tube 25 and fortune silk planker 23 etc. is installed on the planker 18; The front side of described lathe bed 10 is provided with liquid bath 5, described liquid bath 5 has adjacent both sides to adopt Qianmen 2 and the side door 14 that can open, with convenient workpiece 12 and the wire electrode 28 installed, liquid bath 5 is except the structure that the both sides of adopting as shown in Figure 1 all can be opened during concrete enforcement, also can adopt the structure that can open of having only one to form cell wall, form the Qianmen 2 and the side door 14 mutual snapping sealings of liquid bath 5 cell walls among Fig. 2, Qianmen 2 is provided with pin thread plate 1, and side door 14 is provided with the box plate that matches.Reach lathe bed 10 in the liquid bath 5 and be provided with insulating base 7, workbench 9 is fixedly mounted on the insulating base 7, and the part that the whole of insulation board 17 or coil holder 3 or immersion liquid can be installed between coil holder 3 and the last planker 18 is made with insulating materials; The head portion of coil holder 3 can be installed has U/V tapered configuration 15,16(U/V tapered configuration 15,16 with existing high speed to-and-fro thread linear cutting equipment on install be used to that to carry out the structure of tapering processing identical) on coil holder 3 and last planker 18, electrode-wire wheel 8 is installed, wire electrode 28 walks around silk tube 25 and a plurality of guide wheel 8 reaches water spout 11 up and down, 13 constitute a wire-moving system, and workpiece 12 cut, wire electrode 28 is connected with the negative pole of the pulse power, workpiece 12 is connected with the positive pole of the pulse power, in liquid bath 5, be provided with inlet 6 and the Liquid level adjusting valve 4 of drag-out mouth is installed, regulate by the control stick on the tank level control system 31 32.Described going up on the planker 18 is equipped with wire electrode tension governor motion 22.In order to realize all compound cooling processing modes of usefulness of the processing of full immersion type, liquid-spraying type processing or both, the top nozzle 13 and the following nozzle 11 that wire electrode are carried out hydrojet cooling usefulness are installed on the described coil holder 3, in the nozzle wire electrode guide wire apparatus can be set, nozzle all links to each other with corresponding solution feed pump up and down, solution feed pump can be installed in the lathe bed or lathe bed outside.For the ease of initial alignment, when specifically implementing, last planker 18 can be installed in X on guide rail 21 and X is installed to handwheel 19.Silk tube 25 and fortune silk planker 23 are done positive and negative rotation by wire cylinder motor 27 drivings and are moved around, thereby finish the rotation of silk tube and moving back and forth of planker, and a tube protective cover 26 is installed on the silk tube 25, on the fortune silk planker 23 organ cover 24 are housed.Upper cover plate 29 is installed on the liquid bath 5, and upper cover plate 29 is provided with transparent windows 30.Described inlet 6 and Liquid level adjusting valve 4 all mainly are made up of pump, liquid level sensor, filter etc. with tank level control system 31(, can adopt existing routine techniques to be realized) link to each other, regulate by control stick 32.The last planker 18 of present embodiment and following planker 20 can adopt handwheel manually to move, and also can adopt the computer control motor and realize working table movement by ball-screw.
Working solution circulating system of the present invention can place lathe bed inner or outside; Add and to adopt workpiece immersion liquid mode man-hour, or the workpiece immersion liquid adds the hydrojet mode, also can adopt simple hydrojet mode to process, can regulate water level by the water level governor motion according to the cutting thickness of workpiece in the liquid bath, thereby finish the processing of workpiece immersion liquid; When workpiece and last silk were installed, the Qianmen of liquid bath and offside door can be opened, and make things convenient for the workman to operate, and workpiece is installed on the liquid bath bottom and the workbench lathe bed insulation; It is motionless to add the man-hour workpiece, coil holder and under the drive of the wire electrode of machining area on the coil holder, finish the track resultant motion of X, Y direction at planker up and down, and coil holder can become have the structure of U/V tapering in head design on demand; Coil holder can or itself just adopt the material such as the artificial ceramic making of insulation with collets and the insulation of last planker, and the guide wheel assembly that is immersed in the working solution adopts waterproof long-life guide wheel assembly; Fortune silk mode adopts the to-and-fro thread mode, and wire travelling speed is 0.2～10m/s, to adapt to efficient cutting and the repeatedly requirement of cutting, can design the permanent governing mechanism of tension of wire electrode at last planker according to the needs of processing; Lathe top adopts protective cover to splash to prevent working solution and fog, and plays the shielding action to the electromagnetic radiation that produces in the processing, can also reduce the noise in the processing simultaneously, has transparent processing observation window on protective cover.
The present invention can utilize the existing HSWEDM control system and the pulse power to process at the part that all is better than existing traditional high speed to-and-fro thread feed electric spark wire-electrode cutting machine processing effect aspect machining accuracy, the surface roughness, and effect is fairly obvious.
The present invention is by being installed in coil holder and fortune silk system simultaneously on the planker, can make the whole liquid bath that is arranged in of coil holder, realize the immersion liquid processing of workpiece, it has overcome existing high speed travelling wire equipment and has manually gone up the difficult problem that silk can't be realized workpiece immersion liquid cutting because of needs, need open simultaneously only the liquid bath side plate can in liquid bath, finish easily artificial on the work of silk, after last silk finishes, the working solution of can in liquid bath, annotating.The present invention is by the transformation to high speed to-and-fro thread equipment, realized the immersion liquid processing of high speed to-and-fro thread, make the crudy of high speed to-and-fro thread improve greatly, and the cost of equipment only is 1/tens of a low-speed wire cutting equipment, help improving the level and the quality of China's Wire-cut Electrical Discharge Machining, for Wire-cut Electrical Discharge Machining provides a kind of brand-new efficient, high-quality, low-cost equipment.
Embodiment two.
As shown in Figure 3.
A kind of high speed to-and-fro thread immersion type electric spark linear cutting machine, it comprise traditional high speed to-and-fro thread feed electric spark wire-electrode cutting machine (HSWEDM) with control system, the pulse power, lathe bed 10, go up planker 18, a planker 20 and a fortune silk system down, fortune silk system comprises fortune silk planker 23, silk tube 25 and wire cylinder motor 27, the described planker 18 of going up is directly installed on lathe bed 10 rear sides, drive coil holder 3 and do the motion of directions X or Y direction, fortune silk system is installed on the planker 18; Following planker 20 is installed in below the liquid bath 5 of lathe bed 10 front sides, and drive liquid bath 5 is done the motion of Y direction or directions X, the track that last planker 18 and following planker 20 associated movements are finished workpiece to be machined XY direction synthesizes, be provided with insulating base 7 in the liquid bath 5, workbench 9 is fixed on the insulating base 7, coil holder 3 is arranged in liquid bath 5 and carries out the motion of directions X or Y direction by last planker 18 drives, on coil holder 3 and last planker 18, electrode-wire wheel 8 is installed, wire electrode 28 walks around silk tube 25 and a plurality of guide wheel 8 reaches water spout 11 up and down, 13 constitute a wire-moving system, and workpiece 12 cut, wire electrode 28 is connected with the negative pole of the pulse power, workpiece 12 is connected with the positive pole of the pulse power, in liquid bath 5, be provided with inlet 6 and the Liquid level adjusting valve 4 that has liquid outlet is installed, by the liquid level in the adjusting rod 32 adjusting liquid baths 5 of tank level control system 31.
The difference of present embodiment and embodiment one is the difference of the installation site of planker and following planker, and all the other are all identical with embodiment one.The last planker of present embodiment is directly installed on lathe bed 10 rear sides, and the drive coil holder is done the motion of directions X or Y direction, and the motion of other direction is realized by the following planker that is installed under the work tank, the liquid bath of present embodiment is installed in down on the planker and can does the motion of Y direction or directions X under planker drives down, go up planker like this and drive the motion that wire electrode is made a direction in the horizontal plane, and planker drives liquid bath down, liquid bath drives the motion that the workpiece of wherein installing is made another direction in the horizontal plane, the track of both direction motion is synthetic can to process the part identical with embodiment one, and the part processing of the inclined-plane or the conical surface is realized by the U/V mechanism on the coil holder.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (8)
1. high speed to-and-fro thread immersion type electric spark linear cutting machine, it comprise traditional high speed to-and-fro thread feed electric spark wire-electrode cutting machine with control system, the pulse power, lathe bed (10), go up planker (18), a planker (20) and a fortune system down, fortune silk system comprises fortune silk planker (23), silk tube (25) and wire cylinder motor (27), it is characterized in that the described planker (18) of going up is installed in lathe bed (10) rear side, and do the motion of directions X or Y direction, a fortune silk system is installed on the planker (18); Following planker (20) can be installed under the planker (18), also can be installed under the liquid bath (5), and do the motion of Y direction or directions X; Last planker and following planker common actions, finish the track resultant motion of workpiece to be machined XY direction, be provided with insulating base (7) in the liquid bath (5), workbench (9) is fixed on the insulating base (7), coil holder (3) is arranged in liquid bath (5) and links to each other with last planker (18), coil holder (3) is done the motion of directions X or Y direction under the drive of last planker (18), on coil holder (3) and last planker (18), electrode-wire wheel (8) is installed, wire electrode (28) walks around silk tube (25) and a plurality of guide wheel (8) reaches water spout (11 up and down, 13) constitute a wire-moving system, and workpiece (12) cut, wire electrode (28) is connected with the negative pole of the pulse power, workpiece (12) is connected with the positive pole of the pulse power, in liquid bath (5), be provided with inlet (6) and the Liquid level adjusting valve (4) that has liquid outlet is installed, by the liquid level in adjusting rod (32) the adjusting liquid bath (5) of tank level control system (31).
2. high speed to-and-fro thread immersion type electric spark linear cutting machine according to claim 1, it is characterized in that being equipped with between described coil holder (3) and the last planker part insulating materials manufacturing of the whole of insulation board (17) or coil holder (3) or immersion liquid, the head portion of coil holder (3) is installed has the structure (15,16) of U/V tapering to carry out the cutting of stretched or tapering.
3. high speed to-and-fro thread immersion type electric spark linear cutting machine according to claim 1, it is characterized in that described immersion liquid groove (5) has the cell wall door in order to convenient installation workpiece (12) and wire electrode (28) that can open at least, the described door that can open is by buckle (1) and adjacent cell wall fastening.
4. high speed to-and-fro thread immersion type electric spark linear cutting machine according to claim 1 is characterized in that described going up on the planker (18) is equipped with wire electrode tension governor motion (22).
5. high speed to-and-fro thread immersion type electric spark linear cutting machine according to claim 1 is characterized in that being equipped with on the described coil holder (3) wire electrode is carried out being provided with filar guide in the top nozzle (13) of hydrojet cooling usefulness and the following nozzle (11).
6. high speed to-and-fro thread immersion type electric spark linear cutting machine according to claim 1, it is characterized in that described silk tube (25) links to each other with wire cylinder motor (27), silk tube (25), wire cylinder motor (27) are installed on the fortune silk planker (23) simultaneously, fortune silk planker (23) is installed on the planker (18), on the fortune silk planker (23) organ cover (24) is arranged; Silk tube protective cover (26) is installed on the silk tube (25).
7. high speed to-and-fro thread immersion type electric spark linear cutting machine according to claim 1 is characterized in that upper cover plate (29) is installed on the described liquid bath (5), and upper cover plate (29) is provided with transparent windows (30).
8. high speed to-and-fro thread immersion type electric spark linear cutting machine according to claim 1 is characterized in that described inlet (6) and Liquid level adjusting valve (4) all link to each other with tank level control system (31).
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| CN2011102567821A CN102294524A (en) | 2011-09-01 | 2011-09-01 | High-speed reciprocating wire feeding immersion type electric spark wire cutting machine tool |
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Application publication date: 20111228 |