CN109382556A - A kind of electric discharging machining electrode with wedge shape - Google Patents
A kind of electric discharging machining electrode with wedge shape Download PDFInfo
- Publication number
- CN109382556A CN109382556A CN201710679860.6A CN201710679860A CN109382556A CN 109382556 A CN109382556 A CN 109382556A CN 201710679860 A CN201710679860 A CN 201710679860A CN 109382556 A CN109382556 A CN 109382556A
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- China
- Prior art keywords
- wedge
- electrode
- wedge shape
- deep hole
- electric discharging
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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
- B23H1/04—Electrodes specially adapted therefor or their manufacture
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention belongs to technical fields, and in particular to a kind of electric discharging machining electrode with wedge shape.When electrical discharge machining small deep hole, small deep hole axis is easy to appear deflection or other shapes and location error.Liquid wedge effect is widely used in grinding machine spindle multi-oil wedge floating-ring hydrodynamic sliding bearing.Existing electric discharging machining electrode is usually round tube or pole.Liquid wedge effect employed in grinding machine hydrodynamic sliding bearing is used for reference in the present invention, suppresses or process wedge-shaped shallow slot in electrode outer surface, or wedge-shaped protrusion is set on the surface of electrode.Wedge-shaped to form wedge shape space with machined surface of deep hole during electrical discharge machining, during electrode rotary, dielectric (coolant liquid) will enter above-mentioned wedge shape space, and flow to small―gap suture from the wide arc gap of wedge shape.Wedge effect increases fluid pressure, clamps electrode, it is made to be always positioned at the center of machined deep hole, prevents electrode deflection, reduces processed small deep hole misalignment of axe.Ultrasonic vibration will improve hole finish.
Description
Technical field
The invention belongs to technical fields, and in particular to a kind of electric discharging machining electrode with wedge shape.
Background technique
Drill bit is broadly divided by chip removal mode: bta deep hole drilling and outside chip removal deep hole drill.Bta deep hole drilling has drill gun,
External chip discharging deep hole is drilled with BTA brill.
Deep hole machining major way has: first, cutter rotation, and workpiece feeding；Second, workpiece rotation, tool feeding；The
Three, cutter and workpiece all rotate, while cutter opposite piece is fed.Deep hole machining basic principle sees Wang Jun, and " modern deep hole adds
Work technology " and Wang Shiqing chief editor " Deep-Hole Drilling Technology ".
Liquid wedge effect is widely used in grinding machine spindle multi-oil wedge floating-ring hydrodynamic sliding bearing.As shown in Figure 1, grinding machine spindle axis
It is machined with wedge groove at 3 in holding, when main shaft and bearing relative rotation, lubricating fluid flows to wedge groove from the wide arc gap of wedge groove
Small―gap suture, so that the fluid pressure in wedge groove increases, therefore wedge-shaped oil film makes main shaft orientation in bearing like scroll chuck at 3
The center in hole, and be clamped.Sometimes with floating structure, floating oil film wedge is formed, there is better dead axle effect.
It is big for brittleness, it is not easy the hole using drill bit processing, is usually processed using electric spark method.The lesser hole of diameter,
It is extremely difficult using drill bit processing, special processing technology can also be used, electrical discharge machining be one of.Especially small-diameter deep
Electrical discharge machining is usually selected in hole.
Electrical discharge machining basic principle is as follows: there are certain dielectrics between workpiece (negative electrode) and electrode (positive electrode)
Body medium (such as kerosene, saponification liquor or deionized water), using the galvano-cautery of the pulse feature spark discharge generated between the two poles of the earth, makes
Conductive material (workpiece) is removed and achievees the purpose that processing.
As shown in Fig. 2, workpiece 1 is connected with the both ends of the pulse power 2 respectively with electrode 4.SERVO CONTROL feed arrangement 3 makes
The discharging gap (several microns to several hundred microns) of a very little is often kept between electrode and workpiece.Work with certain insulating properties
Liquid (liquid medium) 5 is stored in container and floods electrode and workpiece workspace, and effect is to generate pulse feature spark discharge,
And the galvanic corrosion products such as metal fragment generated in process, carbon black suspend exclusion from discharging gap, to electrode and work
Also there is cooling effect on part surface.
The problems of electrical discharge machining small deep hole: electrode is elongate rod, and poor rigidity, deformation is big, is easy to wander off, added
The small deep hole that work goes out is easy to appear deflection or other mass profiles and location error.It is difficult to observe processing during Small-Deep Hole Machining
Position and electrode, are easy to happen deflection, and workpiece is caused to scrap, therefore Small-Deep Hole Machining is the difficult point of machining.It prevents and entangles
Positive electrode deflection, it is ensured that machining accuracy is the problem for needing to solve.
Summary of the invention
The purpose of the present invention: it is easy to deviate this technical problem of ideal position for electrode during deep hole machining, propose
Associated solutions prevent the deflection of electrode, and electrode is made to be in correct position as far as possible, improve deep hole machining yield rate and processing
Precision.
Existing deep hole electric discharging machining electrode part is solid, more mostly hollow structure, there is hole among it.Working solution is by electricity
Pole mesoporous flows into working position, then, then is formed by gap with the inner hole of workpiece surface processed from electrode and is discharged.Deep hole adds
Electrode rotary during work.
In other words the diameter in the hole that electrode is processed, which is greater than electrode, has gap between deep hole inner surface and electrode outer surface.
The presence in above-mentioned gap is one of the reason of causing electrode to wander off, and in the presence of vibration and other external interferences, electrode is easier
It wanders off, processed Small-deep Hole is made to generate misalignment of axe.
At work, coolant liquid flows into electrode from the interstitial hole of electrode, and between electrode and processed small deep hole inner wall
Gap outflow, when outflow takes away the galvanic corrosion product such as metal fragment, carbon black.
The invention proposes a kind of electric discharging machining electrodes with wedge shape.Fig. 3 is a kind of electrical spark working with wedge shape
Work electrode cross-section figure.Fig. 4 is a kind of electric discharging machining electrode operation schematic diagram with wedge shape.This electrode in structure with
Round tube used in existing electrical discharge machining or cylinder electrode are different, due to the difference of structure, make it have different from existing electrode
Function.
The present invention has used for reference liquid wedge effect employed in grinding machine multi-oil wedge floating-ring hydrodynamic sliding bearing.
Existing electric discharging machining electrode is usually round tube or pole.In the present invention, electrode is improved: in electrode appearance
Face pressure system processes 3 wedge-shaped shallow slots, or 3 wedge-shaped protrusions are arranged on the surface of electrode.During deep hole machining,
Wedge shape and machined surface of deep hole form wedge shape space at 3, and during electrode rotary, dielectric (coolant liquid) will enter
Above-mentioned wedge shape space, and small―gap suture is flowed to from the wide arc gap of wedge shape.Wedge effect increases fluid pressure, clamps electrode, makes its beginning
Final position prevents electrode deflection in the center of machined deep hole, reduces processed small deep hole misalignment of axe.
Ultrasonic vibration generator one end is connected with workpiece, and the other end installs smooth guide post, and smooth guide post can be along fixture
Pilot hole moves back and forth, and the spring positioned at fixture pilot hole bottom connects smooth guide post and fixture.Make workpiece in processed hole
There is ultrasonic vibration on axis direction, the surface quality in processed hole can be improved.Above-mentioned setting can avoid ultrasonic vibration generator
The vibration of generation passes to fixture and lathe, and ultrasonic vibration is made to pass to workpiece to greatest extent, efficiently utilizes vibrational energy.Attached drawing
In, ultrasonic vibration generator, smooth guide post, spring etc. are omitted, be not shown, row those skilled in the art it will be appreciated that.
In conclusion the present invention has following novelty:
1. it is a kind of with wedge shape electric discharging machining electrode, matrix be column, outer surface of matrix be provided with wedge groove or
Wedge-shaped protrusion, wedge groove or wedge-shaped protrusion and machined surface of deep hole form wedge shape space, during electrode rotary, liquid
Body flows to small―gap suture from the wide arc gap of wedge shape space, and ultrasonic vibration generator one end is connected with workpiece, and other end installation is smooth to be led
Xiang Zhu, smooth guide post can be moved back and forth along fixture pilot hole, and the spring positioned at fixture pilot hole bottom connects smooth guide post
And fixture.
2. a kind of electric discharging machining electrode with wedge shape described in, wedge shape are two or three or a plurality of.
3. a kind of electric discharging machining electrode with wedge shape described in, matrix is with inner hole or is solid.
Beneficial effects of the present invention: the use of wedge electrode is expected to improve electrode rotary stability, improves anti-interference ability,
It prevents from wandering off, reduces the deviation of processed small deep hole axis, guarantee Small-Deep Hole Machining quality, hole table will be improved by introducing ultrasonic vibration
Face finish.
Detailed description of the invention
Fig. 1 is the main shaft bearing with wedge groove.
Fig. 2 is electrical discharge machining schematic illustration.
Fig. 3 is a kind of electric discharging machining electrode cross-sectional view with wedge shape.
Fig. 4 is a kind of electric discharging machining electrode operation schematic diagram with wedge shape.
In figure: 1- workpiece；The 2- pulse power；3- Servocontrol device；4- electrode；5- working solution；6- filter；7- work
Liquid pump.A kind of electric discharging machining electrode with wedge shape of 8-.
Specific embodiment
Embodiment of the present invention is described further below, specific embodiment does not do any restrictions to the present invention.
Embodiment one: when using the present invention, wedge shape is slot.
Embodiment two: when using the present invention, wedge shape is protrusion.
Claims (3)
1. a kind of electric discharging machining electrode with wedge shape, which is characterized in that matrix is column, and outer surface of matrix is provided with wedge shape
Slot or wedge-shaped protrusion, wedge groove or wedge-shaped protrusion and machined surface of deep hole form wedge shape space, in the process of electrode rotary
In, liquid flows to small―gap suture from the wide arc gap of wedge shape space, and ultrasonic vibration generator one end is connected with workpiece, and the other end installs light
Sliding guide post, smooth guide post can be moved back and forth along fixture pilot hole, and the spring connection positioned at fixture pilot hole bottom is smooth to be led
To column and fixture.
2. a kind of electric discharging machining electrode with wedge shape according to claim 1, it is characterised in that wedge shape for two or
Three or a plurality of.
3. a kind of electric discharging machining electrode with wedge shape according to claim 1, it is characterised in that matrix has inner hole
It or is solid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679860.6A CN109382556A (en) | 2017-08-10 | 2017-08-10 | A kind of electric discharging machining electrode with wedge shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679860.6A CN109382556A (en) | 2017-08-10 | 2017-08-10 | A kind of electric discharging machining electrode with wedge shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109382556A true CN109382556A (en) | 2019-02-26 |
Family
ID=65415014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710679860.6A Pending CN109382556A (en) | 2017-08-10 | 2017-08-10 | A kind of electric discharging machining electrode with wedge shape |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109382556A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264535A (en) * | 2008-01-22 | 2008-09-17 | 山东大学 | Ultrasonic vibration jetting type electric spark composite processing technique and special-purpose equipment |
| CN202180270U (en) * | 2011-05-04 | 2012-04-04 | 亿和塑胶电子制品(深圳)有限公司 | Electrode used for EDM (electric discharge machining) of deep hole |
| CN104259599A (en) * | 2014-08-26 | 2015-01-07 | 义乌市绿美生物科技有限公司 | Electrosparking method |
| CN104259600A (en) * | 2014-08-26 | 2015-01-07 | 义乌市绿美生物科技有限公司 | Electrosparking device |
| CN104846155A (en) * | 2014-01-06 | 2015-08-19 | 天津大学 | Method utilizing ultrasonic impact and electric spark combined processing device for processing |
| KR20170027390A (en) * | 2015-09-02 | 2017-03-10 | 이명종 | A working method of a mold for injection molding small extrusions of the precision screw is formed |
-
2017
- 2017-08-10 CN CN201710679860.6A patent/CN109382556A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264535A (en) * | 2008-01-22 | 2008-09-17 | 山东大学 | Ultrasonic vibration jetting type electric spark composite processing technique and special-purpose equipment |
| CN202180270U (en) * | 2011-05-04 | 2012-04-04 | 亿和塑胶电子制品(深圳)有限公司 | Electrode used for EDM (electric discharge machining) of deep hole |
| CN104846155A (en) * | 2014-01-06 | 2015-08-19 | 天津大学 | Method utilizing ultrasonic impact and electric spark combined processing device for processing |
| CN104259599A (en) * | 2014-08-26 | 2015-01-07 | 义乌市绿美生物科技有限公司 | Electrosparking method |
| CN104259600A (en) * | 2014-08-26 | 2015-01-07 | 义乌市绿美生物科技有限公司 | Electrosparking device |
| KR20170027390A (en) * | 2015-09-02 | 2017-03-10 | 이명종 | A working method of a mold for injection molding small extrusions of the precision screw is formed |
Non-Patent Citations (2)
| Title |
|---|
| 王明环，朱荻等: ""微螺旋电极在改善微细电解加工性能中的应用"", 《机械科学与技术》 * |
| 许发樾: "《实用模具设计与制造手册》", 28 February 2001, 机械工业出版社 * |
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Application publication date: 20190226 |