CN109365930A - A kind of electric discharge machining apparatus and method in spatially spiral hole - Google Patents
A kind of electric discharge machining apparatus and method in spatially spiral hole Download PDFInfo
- Publication number
- CN109365930A CN109365930A CN201811383437.2A CN201811383437A CN109365930A CN 109365930 A CN109365930 A CN 109365930A CN 201811383437 A CN201811383437 A CN 201811383437A CN 109365930 A CN109365930 A CN 109365930A
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- spark
- electrode
- machine tool
- spiral
- helix tube
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Classifications
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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
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
-
- 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
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/14—Making holes
Abstract
The present invention relates to field of machining, more particularly to the electric discharge machining apparatus and method in a kind of spatially spiral hole, including spark-erosion machine tool, helix tube electrode assembly, movement transforming device, spark-erosion machine tool is equipped with spark-erosion machine tool main shaft, movement transforming device one end connects spark-erosion machine tool main shaft, other end connects helix tube electrode assembly, movement transforming device is used to be converted to the straight reciprocating motion of spark-erosion machine tool main shaft the linear reciprocating motion of helix tube electrode assembly and reciprocating rotating moves, when i.e. helix tube electrode assembly advances or retreats a screw pitch L, 360 ° of helix tube electrode assembly forward direction or reverse rotation.The setting of movement transforming device enables helix tube electrode assembly to keep feeding simultaneously and rotate, and with the lasting feeding of helix tube electrode assembly, the whole spatially spiral hole for keeping ratio can be processed on workpiece.
Description
Technical field
The present invention relates to field of machining, electric discharge machining apparatus and side more particularly to a kind of spatially spiral hole
Method.
Background technique
In the equidistant cooling water channel structure design of mold, the device in electrical discharge machining spatially spiral hole compares shortcoming.
Prior art discloses a kind of electric discharge machining apparatus of bent hole, which includes that there are two rotational freedoms for tool
Workbench, fixed workpiece on the table, electrode, electrode direction control mechanism, feed drive unit and fill spark
The spark liquid container of liquid.Electrode direction control mechanism is able to maintain electrode moment direction vertical direction, and feed drive unit can then drive
Moving electrode is fed along the axis of target hole.When processing bent hole, workbench and workpiece need to be kept continuous during electrode is fed
It rotates.
The device still has following technical problem in terms of spatially spiral hole machined:
1. the feeding that the device needs the direction of electrode direction control mechanism coordination electrode, feed drive unit coordination electrode
The rotation of direction and workbench control workpiece, structure and control are more complicated；
2. since the feeding of electrode and the rotation of workpiece are controlled by different device respectively, when the feed speed and workpiece of electrode
Velocity of rotation in some speed when changing, another speed can not correspondingly change, and cause to process
Spatially spiral hole cannot keep ratio on the whole, can not be applied to the equidistant cooling water channel of mold.
Summary of the invention
For the technical problems in the prior art, an object of the present invention is: providing a kind of spatially spiral hole
Electric discharge machining apparatus is realized using relatively simple mechanical structure and processes the whole spatially spiral hole for keeping ratio, to change
Manufacturing technology basis is established in the equidistant cooling water channel structure design of kind and optimization mold.
For the technical problems in the prior art, the second object of the present invention is to: a kind of spatially spiral hole is provided
Electric discharge machining method may be implemented to process the whole spatially spiral hole for keeping ratio using this method, to improve and optimizing
Manufacturing technology basis is established in the equidistant cooling water channel structure design of mold.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of electric discharge machining apparatus in spatially spiral hole, including spark-erosion machine tool, helix tube electrode assembly, movement conversion
Device, spark-erosion machine tool are equipped with spark-erosion machine tool main shaft, and movement transforming device one end connects spark-erosion machine tool main shaft, other end
Helix tube electrode assembly is connected, movement transforming device is used to the straight reciprocating motion of spark-erosion machine tool main shaft being converted to helix tube
The linear reciprocating motion and reciprocating rotating of electrode assembly move, i.e., when helix tube electrode assembly advances or retreats a screw pitch L,
360 ° of helix tube electrode assembly forward direction or reverse rotation.Objective condition variation when due to electrical discharge machining to different depth,
Discharge parameter it is unstable, helix tube electrode assembly feed speed f is also not constant, thus cannot if controlled using numerical control
The angular velocity of satellite motion of precognition and preset helix tube electrode assembly rotary motion θ.Present invention process principle and apparatus system are simple, at
This is cheap, without complicated numerical control device, does not also need to make feed motion f detection and adapt to track, movement transforming device
Setting enables helix tube electrode assembly to keep feeding simultaneously and rotate, and helix tube electrode assembly advances or one spiral shell of retrogressing
When away from L, 360 ° of helix tube electrode assembly forward direction or reverse rotation, can with the lasting feeding of helix tube electrode assembly
The whole spatially spiral hole for keeping ratio is processed on workpiece, is established to improve and optimizing the equidistant cooling water channel structure design of mold
Technical foundation is made in customization.
Further, movement transforming device includes ball nut and ball-screw, and spark-erosion machine tool is equipped with rack, electric discharge machine
Bed main shaft is flexibly connected with one end of ball-screw by bearing and shaft coupling, the affixed helix tube electricity of the other end of ball-screw
Pole component, matched ball nut are fixed in rack, and helix tube electrode assembly includes spiral pipe electrode, the screw pitch of ball-screw
It is identical with the screw pitch of spiral pipe electrode.After this structure, ball-screw and ball nut can be by spark-erosion machine tool main shafts
It is reciprocal move up and down be converted to ball-screw crankmotion and it is reciprocal move up and down, and drive spiral pipe electrode also same
When keep feeding and rotation.Since the screw pitch of ball-screw is identical with the screw pitch of spiral pipe electrode, spiral pipe electrode can be in work
The whole spatially spiral hole for keeping ratio is processed on part.Ball-screw-transmission is very agile, and response is fast, spiral pipe electrode straight line
The stringent ratio of feeding and rotary motion is easy to guarantee.It is applicable to different processing occasions and different electrical discharge machining ginsengs
Number.
Further, helix tube electrode assembly further includes spark liquid liquid feed device, spark liquid liquid feed device and spiral pipe electrode
Connection can provide the spark liquid of electrical discharge machining needs for spiral pipe electrode.
Further, spark liquid liquid feed device includes spark liquid turned cavities, liquid storage chamber and spark liquid ingress pipe, the revolution of spark liquid
Chamber both ends are affixed with ball-screw and spiral pipe electrode respectively, and the storage being connected to spiral pipe electrode is equipped with inside spark liquid turned cavities
Liquid space, liquid storage chamber are connected to liquid storage space, and spark liquid ingress pipe is connected to liquid storage chamber.After this structure, helix tube electricity
Spark liquid needed for pole can be continuously obtained electrical discharge machining during rotation and feeding.
Further, spiral pipe electrode, which passes through, is equipped with through the channel of spiral pipe electrode.Using this structure
Afterwards, spark liquid can be sprayed from helix tube electrode channel, and the deep enough tiny place of energy carries out electrical discharge machining, and deslagging dissipates
Thermal effect is good, is not likely to produce " secondary discharge ", and unprocessed hole size consistency is good, and efficiency is higher.
Further, spiral pipe electrode includes straight line segment electrode and spiral segment electrode, and straight line segment electrode one end is fixed in ball
One end of lead screw, the other end and spiral segment electrode is affixed, and straight line segment electrode is located in the shaft center line of spiral segment electrode.Using
After this structure, spiral pipe electrode can be rotated around Pivot Point Center, can process sky identical with helix tube electrode size
Between threaded hole.
Further, straight line segment electrode is equipped with inlet, and inlet is connect with liquid feed device.Spark liquid is entered by inlet
In spiral pipe electrode, and electrical spark working work area is reached by the channel in spiral pipe electrode.
Further, turned cavities are intracavitary is equipped with location hole, and straight line segment electrode is connected to location hole.After this structure, spiral shell
Coil electrode is accurately positioned, and the precision of processing is helped to improve.
A kind of method of spark-erosion machine tool processing space threaded hole, using spark-erosion machine tool main shaft as helix tube electrode group
The driving device of part.
Further, the straight reciprocating motion of spark-erosion machine tool main shaft by movement transforming device be converted to spiral pipe electrode around
The reciprocating rotating of its own center line moves the θ and straight reciprocating motion f along spark-erosion machine tool main shaft, and reciprocating rotating moves
θ and straight reciprocating motion f keeps stringent proportionate relationship, i.e., when spiral pipe electrode advances or retreats a screw pitch L, helix tube
360 ° of electrode forward direction or reverse rotation.
Generally speaking, the present invention has the advantage that
Present invention process principle and apparatus system are simple, low in cost, without complicated numerical control device, do not need yet into
Make detection to movement f and adapt to track, the setting of movement transforming device enables helix tube electrode assembly to keep feeding simultaneously
And rotation, helix tube electrode assembly advances, and helix tube electrode assembly is positive when perhaps retreating a screw pitch L or reversely rotates
360 °, with the lasting feeding of helix tube electrode assembly, the whole spatially spiral for keeping ratio can be processed on workpiece
Manufacturing technology basis is established to improve and optimizing the equidistant cooling water channel structure design of mold in hole.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the electric discharge machining apparatus in spatially spiral hole of the present invention.
Wherein include in Fig. 1:
1 --- spark-erosion machine tool main shaft, 11 --- collet；
2 --- shaft, 21 --- bearing, 22 --- clamping (bearing) housing, 23 --- housing screw,
24 --- adjusting gasket, 25 --- bearing (ball) cover, 26 --- felt seal rings；
31 --- first shaft coupling, 311 --- first shaft coupling screw, 32 --- second shaft coupling,
321 --- second shaft coupling screw；
41 --- ball-screw, 42 --- ball nut, 43 --- ball steel balls；
5 --- workbench, 51 --- bottom plate, 52 --- support frame, 521 --- fixing screws,
522 --- --- big support frame, 531 --- big support frame positioning pin, 532 --- bolts of positioning pin, 53；
6 --- spiral pipe electrode；
71 --- spark liquid turned cavities, 711 --- sealing ring, 712 --- end-face seal ring,
713 --- --- liquid storage chamber, 73 --- the spark liquid of fixed thread plug, 72 ingress pipe,
74 --- spark liquid imports connector, 75 --- O-rings；
8 --- workpiece, 81 --- parallels.
Specific embodiment
It is next below that the present invention will be further described in detail.
As shown in Figure 1, a kind of electric discharge machining apparatus in spatially spiral hole, including spark-erosion machine tool, helix tube electrode group
Part, movement transforming device, spark-erosion machine tool are equipped with spark-erosion machine tool main shaft 1, and movement transforming device is used for spark-erosion machine tool master
The straight reciprocating motion of axis 1 is converted to linear reciprocating motion and the reciprocating rotating movement of helix tube electrode assembly, i.e. helix tube electricity
360 ° of helix tube electrode assembly forward direction or reverse rotation when component advance in pole perhaps retreats a screw pitch L.Present invention process is former
Reason and apparatus system are simple, low in cost, without complicated numerical control device, also do not need that feed motion f is detected and adapted to
Tracking, the setting of movement transforming device enable helix tube electrode assembly to keep feeding simultaneously and rotate, helix tube electrode group
Part advances, and helix tube electrode assembly is positive when perhaps retreating a screw pitch L or reversely rotates 360 °, with helix tube electrode group
The lasting feeding of part can process the whole spatially spiral hole for keeping ratio, on workpiece 8 to improve and optimizing mold etc.
Manufacturing technology basis is established away from cooling water channel structure design.
Movement transforming device includes ball nut 42 and ball-screw 41, and spark-erosion machine tool is equipped with rack, spark-erosion machine tool
Main shaft 1 is flexibly connected with one end of ball-screw 41 by bearing 21 and shaft coupling, the affixed spiral shell of the other end of ball-screw 41
Coil electrode assembly, matched ball nut 42 are fixed in rack, and helix tube electrode assembly includes spiral pipe electrode 6, ball
The screw pitch of lead screw 41 is identical with the screw pitch of spiral pipe electrode 6.The transmission of ball-screw 41 is very agile, and response is fast, spiral pipe electrode 6
Straight-line feed and the stringent ratio of rotary motion are easy to guarantee.It is applicable to different processing occasions and different electrical discharge machinings
Parameter.The reciprocal up and down motion of spark-erosion machine tool main shaft 1 can be converted to ball-screw by ball-screw 41 and ball nut 42
41 crankmotion and reciprocal up and down motion, and drive spiral pipe electrode 6 also while keeping feeding and rotate.Due to ball
The screw pitch of lead screw 41 is identical with the screw pitch of spiral pipe electrode 6, and spiral pipe electrode 6 can process whole holding ratio on workpiece 8
The spatially spiral hole of example.
Helix tube electrode assembly further includes spark liquid liquid feed device, and spark liquid liquid feed device is connect with spiral pipe electrode 6, energy
Enough the spark liquid of electrical discharge machining needs is provided for spiral pipe electrode 6.
Spark liquid liquid feed device includes spark liquid turned cavities, liquid storage chamber and spark liquid ingress pipe, spark liquid turned cavities both ends
It is affixed with ball-screw 41 and spiral pipe electrode 6 respectively, the liquid storage being connected to spiral pipe electrode 6 is equipped with inside spark liquid turned cavities
Space, liquid storage chamber are connected to liquid storage space, and spark liquid ingress pipe is connected to liquid storage chamber.After this structure, spiral pipe electrode 6
Spark liquid needed for electrical discharge machining capable of being continuously obtained during rotation and feeding.
Spiral pipe electrode 6, which passes through, to be equipped with through the channel of spiral pipe electrode 6.After this structure, fire
Flower liquid can be sprayed from 6 channel of spiral pipe electrode, and the deep enough tiny place of energy carries out electrical discharge machining, deslagging, heat dissipation effect
Fruit is good, is not likely to produce " secondary discharge ", and unprocessed hole size consistency is good, and efficiency is higher.
Spiral pipe electrode 6 includes straight line segment electrode and spiral segment electrode, and straight line segment electrode one end is fixed in ball-screw 41,
One end of the other end and spiral segment electrode is affixed, and straight line segment electrode is located in the shaft center line of spiral segment electrode.Using this
After structure, spiral pipe electrode 6 can be rotated around Pivot Point Center, can process space identical with 6 size of spiral pipe electrode
Threaded hole.
Straight line segment electrode is equipped with inlet, and inlet is connect with liquid feed device.Spark liquid enters helix tube by inlet
In electrode 6, and electrical spark working work area is reached by the channel in spiral pipe electrode 6.
Turned cavities are intracavitary to be equipped with location hole, and straight line segment electrode is connected to location hole.After this structure, spiral pipe electrode
6 are accurately positioned, and the precision of processing is helped to improve.
A kind of method of spark-erosion machine tool processing space threaded hole is used as spiral pipe electrode using spark-erosion machine tool main shaft 1
The driving device of component.
Further, the straight reciprocating motion of spark-erosion machine tool main shaft 1 is converted to spiral pipe electrode 6 by movement transforming device
θ is moved around the reciprocating rotating of its own center line and along the straight reciprocating motion f of spark-erosion machine tool main shaft 1, and reciprocating rotating
Movement θ and straight reciprocating motion f keeps stringent proportionate relationship, i.e., when spiral pipe electrode 6 advances or retreats a screw pitch L,
360 ° of 6 forward direction of spiral pipe electrode or reverse rotation.
In the present embodiment, clamping (bearing) housing 22 is connected and fixed by collet 11 with spark-erosion machine tool main shaft 1.Shaft 2
Couple by bearing 21 with clamping (bearing) housing 22, and realizes that sound separates；Bearing (ball) cover 25 is by housing screw 23 and adjusts
Gasket 24 is fixed on 22 end face of clamping (bearing) housing, is changed the elastic of the adjustable bearing 21 of thickness for adjusting egative film or is disappeared
Except gap, felt seal ring 26 is placed in the hole of bearing (ball) cover 25 and is in close contact with 2 shaft shoulder of shaft, dust or liquid can be prevented
Drop enters bearing 21；Ball-screw 41 is fixedly connected by first shaft coupling 31 and first shaft coupling screw 311 with shaft 2；Rolling
Ballscrew 41, ball steel ball 43 and ball nut 42 constitute ball nut 42 and are fixed on big support frame 53；Support frame 52 passes through
Fixing screws 521 and positioning pin 522 are fixedly connected with big support frame 53；Spark liquid turned cavities 71 pass through 32 He of second shaft coupling
Second shaft coupling screw 321 is fixedly connected with 41 lower end of ball-screw；Spark liquid turned cavities 71 and liquid storage chamber 72 lean on sealing ring 711
Isolation；Liquid storage chamber 72 is fixedly connected with support frame 52；Spark liquid ingress pipe 73 (can be rubber hose) is inserted directly into spark liquid
Connector 74 is imported, can be fastened with fine wire；Spark liquid ingress pipe 73 is connect with spark liquid fluid supplier (show in figure and do not go out)；Fire
Flower liquid imports connector 74 and is fixed on above support frame 52 by itself screw thread and O-ring 75；Helical pipe electrode passes through fixed thread
Plug 713 and the realization of end-face seal ring 712 and 71 inner top location hole of spark liquid turned cavities position and fix connection.
Straightway of the spiral pipe electrode 6 in spark liquid turned cavities 71 with ball-screw 41 with identical pitch L is provided with
One row's aperture, such pressure spark liquid flow through spark liquid importing connector 74 from spark liquid ingress pipe 73 and enter in spark sap cavity,
Enter spark liquid turned cavities 71 from the side opening of spark liquid turned cavities 71 under pressure effect, enters back into 6 inner hole of spiral pipe electrode, thus
It is transported to pipe electrode lower end, i.e. spark discharge processing district.Big support frame 53 by bolt 532 and big support frame positioning pin 531 with
Bottom plate 51 is fixedly connected, and workpiece 8 is fixed by parallels 81 and bottom plate 51.
Spatially spiral hole machined may be implemented in the present invention on common spark-erosion machine tool, can also be in single shaft digital-controlled or three axis
Spatially spiral hole machined is realized on numerically controlled discharge machine.Device it is relatively simple to manufacture, conventional machine works can manufacture,
It is low in cost, it is mainly used in the equidistant cooling water channel processing of mold, improves plastic part quality.Also it can be applied to special fluid to pass
Dynamic or transfer element special designing processing.
The threaded hole diameter design that 6 working front edge outer diameter of spiral pipe electrode can be processed as required, and rear end can incite somebody to action
Outer diameter is designed to be less than 1mm, in this way, hole machined can be effectively prevented secondary discharge when deeper, and obtain more preferable screw pitch precision,
This precision depends primarily on the screw pitch precision of ball-screw 41.
If being evenly arranged multi-head spiral pipe electrode 6, the processing in bull spatially spiral hole can also be achieved.
The present invention is implemented up to following effect:
1. can process tradition machinery processing according to requirements such as different screw pitch, threaded hole internal diameter and spiral major diameters can not think
The spatially spiral hole of elephant can reduce local pressure loss for fluid transmission and process is lost.Releasing design can be evaded to prohibit
Avoid, optimizes product structure, improving performance, such as the equidistant cooling water channel of plastic mould.
2. aperture 3~Φ of Φ 50 can be processed using various sizes of private space spiral pipe electrode 6, major diameter be Φ 10~
300mm, depth are the spatially spiral hole of 300mm.
The course of work of the invention:
Workpiece 8 is placed on the parallels 81 of spark-erosion machine tool workbench 5, and is located at workpiece 8 under spiral pipe electrode 6
Side.Start spark-erosion machine tool, spark-erosion machine tool main shaft 1 moves down, the one side under the drive of ball screw assembly, of spiral pipe electrode 6
Rotation moves down on one side and sprays spark liquid.When close to workpiece 8, the pulse voltage that spark-erosion machine tool generates is electric by helix tube
The spark liquid hammer that pole 6 sprays is worn, and spark discharge is generated, and the metal particle of 8 metal of ablation workpiece, ablation is walked by spark liquid band.By
There is identical pitch in ball-screw 41 and spiral pipe electrode 6, one screw pitch of every feeding of spiral pipe electrode 6 rotates a circle simultaneously,
Therefore it with the lasting feeding of spiral pipe electrode 6, can be processed on workpiece 8 and 6 shape of spiral pipe electrode and size
Identical spatially spiral hole.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of electric discharge machining apparatus in spatially spiral hole, it is characterised in that: including spark-erosion machine tool, helix tube electrode group
Part, movement transforming device, spark-erosion machine tool are equipped with spark-erosion machine tool main shaft, and movement transforming device one end connects spark-erosion machine tool master
Axis, other end connect helix tube electrode assembly, and movement transforming device is used for the straight reciprocating motion of spark-erosion machine tool main shaft
Linear reciprocating motion and the reciprocating rotating movement of helix tube electrode assembly are converted to, i.e. helix tube electrode assembly advances or retreats
When one screw pitch L, 360 ° of helix tube electrode assembly forward direction or reverse rotation.
2. a kind of electric discharge machining apparatus in spatially spiral hole described in accordance with the claim 1, it is characterised in that: movement converting means
It sets including ball nut and ball-screw, spark-erosion machine tool is equipped with rack, and one end of spark-erosion machine tool main shaft and ball-screw is logical
It crosses bearing and shaft coupling is flexibly connected, the affixed helix tube electrode assembly of the other end of ball-screw, matched ball nut
It is fixed in rack, helix tube electrode assembly includes spiral pipe electrode, and the screw pitch of ball-screw is identical with the screw pitch of spiral pipe electrode.
3. a kind of electric discharge machining apparatus in spatially spiral hole according to claim 2, it is characterised in that: spiral pipe electrode
Component further includes spark liquid liquid feed device, and spark liquid liquid feed device is connect with spiral pipe electrode.
4. a kind of electric discharge machining apparatus in spatially spiral hole described in accordance with the claim 3, it is characterised in that: spark liquid feed flow
Device includes spark liquid turned cavities, liquid storage chamber and spark liquid ingress pipe, spark liquid turned cavities both ends respectively with ball-screw and spiral shell
Coil electrode is affixed, and the liquid storage space being connected to spiral pipe electrode, liquid storage chamber and liquid storage space are equipped with inside spark liquid turned cavities
Connection, spark liquid ingress pipe are connected to liquid storage chamber.
5. a kind of electric discharge machining apparatus in spatially spiral hole according to claim 4, it is characterised in that: spiral pipe electrode
It passes through and is equipped with through the channel of spiral pipe electrode.
6. a kind of electric discharge machining apparatus in spatially spiral hole according to claim 5, it is characterised in that: spiral pipe electrode
Including straight line segment electrode and spiral segment electrode, straight line segment electrode one end is fixed in ball-screw, the other end and spiral segment electrode
One end is affixed, and straight line segment electrode is located in the shaft center line of spiral segment electrode.
7. a kind of electric discharge machining apparatus in spatially spiral hole according to claim 6, it is characterised in that: straight line segment electrode
Equipped with inlet, inlet is connected to liquid storage space.
8. a kind of electric discharge machining apparatus in spatially spiral hole according to claim 7, it is characterised in that: the revolution of spark liquid
Intracavitary to be equipped with location hole, straight line segment electrode is connected to location hole.
9. a kind of method of spark-erosion machine tool processing space threaded hole, it is characterised in that: using spark-erosion machine tool main shaft as spiral shell
The driving device of coil electrode assembly.
10. a kind of method of spark-erosion machine tool processing space threaded hole according to claim 9, it is characterised in that: electrical fire
The straight reciprocating motion of flower machine tool chief axis is converted to spiral pipe electrode around the reciprocal of its own center line by movement transforming device
Rotary motion θ and straight reciprocating motion f along spark-erosion machine tool main shaft, and reciprocating rotating movement θ and straight reciprocating motion f is protected
Stringent proportionate relationship is held, i.e., spiral pipe electrode is positive when the advance of spiral pipe electrode perhaps retreats a screw pitch L or reversely revolves
Turn 360 °.
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| CN201811383437.2A CN109365930B (en) | 2018-11-20 | 2018-11-20 | Electric spark machining device and method for spatial spiral hole |
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| CN201811383437.2A CN109365930B (en) | 2018-11-20 | 2018-11-20 | Electric spark machining device and method for spatial spiral hole |
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| CN109365930B CN109365930B (en) | 2020-04-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014765A (en) * | 2019-12-18 | 2020-04-17 | 广东轻工职业技术学院 | Flexible shaft driven space spiral hole machining device |
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