CN104759719B - Nick line of rabbet joint electric discharge grinding technique and prerotation vane on small circular arc thin slice - Google Patents
Nick line of rabbet joint electric discharge grinding technique and prerotation vane on small circular arc thin slice Download PDFInfo
- Publication number
- CN104759719B CN104759719B CN201510191201.9A CN201510191201A CN104759719B CN 104759719 B CN104759719 B CN 104759719B CN 201510191201 A CN201510191201 A CN 201510191201A CN 104759719 B CN104759719 B CN 104759719B
- Authority
- CN
- China
- Prior art keywords
- circular arc
- thin slice
- small circular
- arc thin
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B23H5/00—Combined machining
- B23H5/04—Electrical discharge machining combined with mechanical working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The present invention discloses nick line of rabbet joint electric discharge grinding technique and prerotation vane on small circular arc thin slice.Processing technology includes：S1, setting datum plane；S2, the center of circle O that the top of small circular arc thin slice is corresponded to arc surface on datum plane, and the small circular arc thin slice of determination；S3, offer line electrode, make the axis of line electrode concordant with the top end points level of small circular arc thin slice；S4, make small circular arc thin slice be that pivot rotates with center of circle O, and make line electrode enter to give along its axis to process micro groove on the top of small circular arc thin slice；S5, processing feed line electrode to reach the depth requirements of micro groove.Nick line of rabbet joint electric discharge grinding technique on small circular arc thin slice of the invention, enter line electric discharge Grinding Process to small circular arc thin slice, can reach the processing request of micro groove on small circular arc thin slice, improve the machining accuracy of micro groove, the micro groove for processing is matched with line electrode well, be adapted to the wire of line electrode.
Description
Technical field
The present invention relates to micro-NTM technical field, more particularly, to the nick line of rabbet joint on a kind of small circular arc thin slice
Electric discharge grinding technique and prerotation vane.
Background technology
There is the discharging grinding and paring of line electrode technique of the small circular arc thin slice of micro groove using circular arc top end face, carry out
Line electric discharge Grinding Process, is capable of achieving the processing of the small spherical crown surface of indent on conductive material.It is micro- on small circular arc thin slice
Groove machining accuracy in itself, directly affects the machining accuracy of the small spherical crown surface of indent.Therefore, in order to ensure the small spherical crown of indent
The machining accuracy in face, the micro groove that the top end face of small circular arc thin slice is not required nothing more than has circular trace precision higher,
Also to be adapted to line electrode is easy to wire and matching requirement.Existing machining, sinking EDM, wire electric discharge are cut
The method such as cut, laser machine, it is possible to achieve process the micro groove of precision in the plane, but small circular arc thin slice cannot be met
The process technology requirement of top end face micro groove.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the present invention proposes that one kind is micro-
Nick line of rabbet joint electric discharge grinding technique on roundlet arc thin slice, the processing technology can reach small circular arc sheet top
The process technology requirement of end face micro groove.
The invention allows for a kind of prerotation vane, the micro groove on the prerotation vane is made up of above-mentioned processing technology.
Nick line of rabbet joint electric discharge grinding technique, wherein institute on small circular arc thin slice according to the first aspect of the invention
The face to be processed for stating small circular arc sheet top end face is arc surface, it is characterised in that comprised the following steps：S1, setting base
Directrix plane；S2, the top of the small circular arc thin slice is corresponded to the datum plane, and determine that the small circular arc is thin
The center of circle O of arc surface on piece；S3, provide line electrode, make the axis of the line electrode with described in the small circular arc thin slice
Top end points level is concordant；S4, make the small circular arc thin slice be that pivot rotates with the center of circle O, and make the line
Electrode enters to give to process micro groove on the top of the small circular arc thin slice along its axis；S5, processing feeding are described
Line electrode is reaching the depth requirements of the micro groove.
Nick line of rabbet joint electric discharge grinding technique, can reach on the small circular arc thin slice of the first aspect according to invention
The process technology requirement of small circular arc sheet top end face micro groove, improves the nick of the top end face of small circular arc thin slice
The machining accuracy of groove, makes the micro groove for processing be matched with line electrode well, to be adapted to the wire of line electrode.
Some embodiments of the invention, the step S2 includes step in detail below：S21, in the small circular arc
A thick O1 that centers is preset on shape thin slice, the small circular arc thin slice is rotated as pivot with the thick O1 that centers
To multiple different stations, calculate on thick center O1 and the small circular arc thin slice between the center of circle O of arc surface
Deviation；S22, the pivot is moved on the small circular arc thin slice at the center of circle O of arc surface.
Further, the step S21 also includes：S211, with it is described it is thick center O1 will be described small as pivot
After circular arc thin slice rotates to multiple different stations, record at different station the top end points of the small circular arc thin slice with
Vertical line distance, delta Ln between the datum plane；S212, by being calculated thick O1 and the small circular arc of centering
Deviation on shape thin slice between the center of circle O of arc surface.
Yet further, in the step S212, arc surface on thick center O1 and the small circular arc thin slice
Center of circle O between deviation value (x, y) by below equation calculate：
When wherein, using the thick vertical line centered between O1 and the datum plane as reference line, α is described small
The angle that the central axis of circular arc thin slice is rotated both clockwise and counterclockwise on the reference line；Δ L1 is the small circular arc
The central axis of shape thin slice on the reference line turn clockwise after angle [alpha] the top end points of the small circular arc thin slice with
Vertical line distance between the datum plane；Δ L2 is that the central axis of the small circular arc thin slice is inverse on the reference line
Vertical line distance after hour hands anglec of rotation α between the top end points and the datum plane of the small circular arc thin slice；R is institute
State the radius of arc surface on small circular arc thin slice；θ is calculated value.
In further embodiment of the invention, the top end points and the datum plane of the small circular arc thin slice
Between vertical line distance, delta Ln measured by making electrical contact with metering system.
According to nick line of rabbet joint electric discharge grinding technique on small circular arc thin slice above-mentioned in the present invention, led by rotating
Axle controls the small circular arc thin slice to be rotated with its pivot, or the rotation for manually controlling the small circular arc thin slice
Turn.
Some embodiments of the invention, the diameter of section of the micro groove is bigger than the line electrode diameter 10 microns-
100 microns.
Further, micro EDM pulse electricity is connected between the small circular arc thin slice and the line electrode
Source, wherein the small circular arc thin slice connects positive pole.
Further, during power on, using water base or oil base working solution as dielectric.
Prerotation vane according to a second aspect of the present invention, the prerotation vane is used to process high pressure co-rail diesel engine fuel injector
Small ball seat surface, be made of above-mentioned nick line of rabbet joint electric discharge grinding technique.
Prerotation vane according to a second aspect of the present invention, discharges by using the nick line of rabbet joint on above-mentioned small circular arc thin slice
Grinding technique can process the micro groove with circular trace precision higher in the top end face of prerotation vane, while processing
The micro groove for going out can be matched with line electrode, be adapted to the wire of line electrode, so that beneficial to the small spherical crown surface of indent on conductive material
Processing.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the flow chart of nick line of rabbet joint electric discharge grinding technique on small circular arc thin slice；
Fig. 2 is the calibration process schematic diagram in the center of circle at the top of the circular arc of small circular arc thin slice,
Wherein, Fig. 2 (a) is the corresponding schematic diagram of the top with datum plane of small circular arc thin slice,
Fig. 2 (b) be small circular arc thin slice around its O1 that slightly centers turn clockwise α when schematic diagram,
Fig. 2 (c) be small circular arc thin slice around its slightly center O1 rotate counterclockwise α when schematic diagram；
Fig. 3 is the installation position fixing process schematic diagram of small circular arc sheet top end face and line electrode；
Fig. 4 is the installation process and processing mode schematic diagram of small circular arc sheet top end face and line electrode,
Wherein, Fig. 4 (a) is main shaft rotation mode,
Fig. 4 (b) is manual rotation mode；
Fig. 5 is the process schematic diagram of the micro groove of small circular arc sheet top end face；
Fig. 6 is the schematic diagram of the prerotation vane after processing.
Reference：
Small circular arc thin slice 1；Line electrode 2；Main shaft 3；Reference block 4；Datum plane 41；Dielectric 5.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " thickness ", " on ", D score, " afterwards ", " water
It is flat ", " top ", " bottom " " interior ", " clockwise ", the orientation of the instruction such as " counterclockwise " or position relationship be based on orientation shown in the drawings
Or position relationship, it is for only for ease of the description present invention and simplifies description, rather than the device or element that indicate or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
In the description of the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installations ", answer
It is interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or is integrally connected；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion.For the ordinary skill in the art, above-mentioned term tool in the present invention can be understood with concrete condition
Body implication.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score
The first and second feature directly contacts can be included, it is also possible to including the first and second features be not directly contact but by it
Between other characterisation contact.And, fisrt feature second feature " on ", " top " and " above " include that first is special
Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " below " include fisrt feature directly over second feature and oblique upper, or be merely representative of
Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing different structure of the invention.For letter
Change disclosure of the invention, hereinafter the part and setting to specific examples are described.Certainly, they are only merely illustrative, and
Purpose does not lie in the limitation present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is again the relation between itself not indicating discussed various embodiments and/or setting for purposes of simplicity and clarity.This
Outward, the invention provides various specific technique and material example, but those of ordinary skill in the art can be appreciated that
The use of the applicable property and/or other materials of other techniques.
In addition, fisrt feature described below second feature it " on " structure can include the first and second feature shapes
Embodiment as directly contact, it is also possible to be formed in the embodiment between the first and second features including other feature, this
The feature of sample first and second may not be directly contact.
Below with reference to the accompanying drawings the nick line of rabbet joint on the small circular arc thin slice 1 of embodiment according to a first aspect of the present invention is described to put
Electric grinding technique, wherein the term " small circular arc thin slice " in the present invention refers to thickness range about 0.2-1.0mm
Thin slice, and the top end face of the small circular arc thin slice 1 face to be processed be arc surface.
It is small due to being mainly used for indent on conductive material in the top end face processing micro groove of small circular arc thin slice 1
The processing of spherical crown surface, therefore can be matching according to the size selection of the small spherical crown surface of indent to be processed on conductive material
Top end face is the small circular arc thin slice 1 of arc surface, and further the arc surface to small circular arc thin slice 1 carries out nick
Groove.
As shown in figure 1, on the small circular arc thin slice 1 of the embodiment of the present invention nick line of rabbet joint discharge grinding technique step
It is rapid as follows：
First, datum plane 41 is set, for example, a reference block 4 can be provided, on the basis of the bottom surface of reference block 4 is set
Plane 41.
Secondly, the top of small circular arc thin slice 1 is corresponded into datum plane 41, and is determined on small circular arc thin slice 1
The center of circle O of arc surface.For example, after reference block 4 is set, make to be contacted between the top of small circular arc thin slice 1 and reference block 4,
So that it is determined that on small circular arc thin slice 1 arc surface center of circle O.
Again, there is provided line electrode 2, make the axis of line electrode 2 concordant with the top end points level of small circular arc thin slice 1.
For example, shown in Fig. 3, the horizontal direction where line electrode 2 is adjusted into the plane of small circular arc thin slice 1, and by line electrode 2
Axis location to the top end of small circular arc thin slice 1 to be processed, so that it is determined that line electrode 2 and small circular arc thin slice
1 Working position.
Then, small circular arc thin slice 1 is rotated by pivot of center of circle O, and make line electrode 2 enter to give along its axis
Micro groove is processed on the top of small circular arc thin slice 1.Specifically, revolved with its pivot in small circular arc thin slice 1
When turning, by line electrode 2 along its axis feeding (that is, horizontal feed of the line electrode 2 relative to small circular arc thin slice 1), line
The slow feeding of the wire of electrode 2, so as to process micro groove on the top of small circular arc thin slice 1.Wherein, line electrode 2 is relative
In the horizontal feed amount of small circular arc thin slice 1, it may be determined that the radius of the micro groove on the small arc surface of circular arc thin slice 1.
Meanwhile, the wire feed motion of line electrode 2 can compensate the loss in process of small circular arc thin slice 1, and this not only has
The discharge of renewal and processing bits beneficial to working fluid, while machining accuracy and efficiency can also be improved.
Finally processing feeds line electrode 2 to reach the depth requirements of micro groove, completes the nick on small circular arc thin slice 1
Groove processing.
Nick line of rabbet joint electric discharge grinding technique on the small circular arc thin slice 1 of the first aspect embodiment according to invention,
The process technology requirement of the top end face micro groove of small circular arc thin slice 1 can be reached, the top of small circular arc thin slice 1 is improved
The machining accuracy of the micro groove of end face, makes the micro groove for processing be matched with line electrode 2 well, to be adapted to walking for line electrode 2
Silk.
Some embodiments of the invention, the determination mode of the center of circle O of arc surface can be with small circular arc thin slice 1
It is：A thick O1 that centers is preset first on small circular arc thin slice 1, is pivot by small circular arc with the O1 that slightly centers
Shape thin slice 1 rotates to multiple different stations, as shown in Fig. 2 then calculating circle on thick center O1 and small circular arc thin slice 1
, then be moved on small circular arc thin slice 1 pivot at the center of circle O of arc surface by the deviation between the center of circle O of cambered surface.Tool
For body, it is determined that datum plane 41, and make small circular arc thin slice 1 top correspond to datum plane 41 after, it is slightly fixed small
The center of circle O1 of circular arc thin slice 1, then make small circular arc thin slice 1 with O1 as pivot is rotated to multiple different stations, from
And the deviation on thick center O1 and small circular arc thin slice 1 between the center of circle O of arc surface is calculated in this way, and then according to
Deviation moves small circular arc thin slice to determine the center of circle O of arc surface on small circular arc thin slice 1.
Further, after small circular arc thin slice 1 being rotated into multiple different stations as pivot with the O1 that slightly centers,
The vertical line distance, delta Ln between the top end points and datum plane 41 of small circular arc thin slice 1 at different station is recorded, is passed through
It is calculated the deviation between the center of circle O of arc surface on thick center O1 and small circular arc thin slice 1.For example, as shown in Fig. 2
With the O1 as pivot that slightly centers, small circular arc thin slice 1 is turned clockwise an angle [alpha], small circular arc can be measured
The distance between the circular arc top of thin slice 1 and datum plane 41 Δ L1, then by 1 rotate counterclockwise of small circular arc thin slice, one angle
Degree α, records the distance between the now circular arc top of small circular arc thin slice 1 and datum plane 41 Δ L2, due to small circular arc
The radius of the arc surface of thin slice 1 is known, so that according to the Δ L for measuring1With Δ L2Calculate thick center O1 and small circular arc
Deviation on shape thin slice 1 between the center of circle O of arc surface, and then the deviation is eliminated by adjusting, finally determine that small circular arc is thin
The installation site of piece 1.
Further, slightly center on O1 and small circular arc thin slice 1 between the center of circle O of arc surface deviation value (x,
Y) can be calculated by below equation：
When wherein, using the vertical line that slightly centers between O1 and datum plane 41 as reference line, α is small circular arc thin slice
The angle that 1 central axis is rotated both clockwise and counterclockwise on reference line；Δ L1 is the central axis of small circular arc thin slice 1
The vertical line turned clockwise after angle [alpha] between the top end points and datum plane 41 of small circular arc thin slice 1 on reference line away from
From；Δ L2 is the central axis of small circular arc thin slice 1 on small circular arc thin slice 1 after reference line rotated counterclockwise by angle α
Top end points and datum plane 41 between vertical line distance；R is the radius of arc surface on small circular arc thin slice 1；θ is calculating
Value.
For example, with the O1 as pivot that slightly centers, by small circular arc thin slice 1 turn clockwise angle [alpha] (for example,
30 °), measure the distance between the circular arc top of small circular arc thin slice 1 and datum plane 41 Δ L1(for example, Δ L1=0.2), connect
The rotate counterclockwise α of small circular arc thin slice 1 (for example, 30 °), record now the circular arc top of small circular arc thin slice 1 and base
The distance between directrix plane 41 Δ L2(for example, Δ L2=0.08), if the radius r=0.6 of the arc surface of small circular arc thin slice 1,
Can be obtained using formula (1) and formula (2)：X=0.280, y=0.448 so that the thick O1 for centering move to (0.280,
0.448) on coordinate, the center of circle O of arc surface on small circular arc thin slice 1 is finally determined.
In specific example of the invention, the vertical line between the top end points and datum plane 41 of small circular arc thin slice 1
Distance, delta Ln is measured by making electrical contact with metering system.For example, with the O1 as pivot that slightly centers, by small circular arc
Thin slice 1 turn clockwise an angle [alpha] when, make to make electrical contact between the top of reference block 4 and small circular arc thin slice 1, you can survey
Obtain the distance between the circular arc top of small circular arc thin slice 1 and datum plane 41 Δ L1, small circular arc thin slice 1 is counterclockwise
During one angle [alpha] of rotation, make to make electrical contact with record between the top of reference block 4 and small circular arc thin slice 1 again, you can measure micro-
The distance between the circular arc top of roundlet arc thin slice 1 and datum plane 41 Δ L2.Of course, it should be understood that datum plane 41
Setting can also be realized by the electrical contact between the top of reference block 4 and small circular arc thin slice 1.By making electrical contact with positioning side
Method determines the alignment error quantitative values of small circular arc thin slice 1, be conducive to quick adjustment it is thick center O1 and small circular arc it is thin
Deviation on piece 1 between the center of circle O of arc surface, so as to efficiently reduce the material removal amount of nick groove processing, is conducive to improving
Processing efficiency.
Nick line of rabbet joint electric discharge grinding technique on above-mentioned small circular arc thin slice 1, leads according to embodiments of the present invention
Crossing live spindle 3 controls small circular arc thin slice 1 to be rotated with its pivot, or manually controls small circular arc thin slice 1
Rotation.Specifically, main shaft 3 can control small circular arc thin slice 1 to rotate to multiple different stations around its O1 that slightly centers,
And reference block 4 is made electrical contact with the small top of circular arc thin slice 1 in different station, so that it is determined that the top of small circular arc thin slice 1
Vertical line distance, delta Ln between end end points and datum plane 41, and then determine that the axis of rotation of main shaft 3 is fixed with thick according to geometrical relationship
The deviation of center O1, eliminates the deviation so that the axis of rotation of main shaft 3 is coaxial with the center of circle of the arc surface of small circular arc thin slice 1.
Or can also manually rotate small circular arc thin slice 1 is rotated into different station, so as to finally determine small circular arc
The center of circle O of thin slice 1, it is determined that after the center of circle O of small circular arc thin slice 1, precise scoring lines are rushing at this position under the microscope
Go out small conical surface location hole, coordinate to fix pivot (i.e. small circular arc thin slice with top thin rod and this location hole
Center of circle O).
In the process of micro groove, the manual rotation of rotary middle point is moved or fixed by the precision rotation of main shaft 3
Dynamic, the slow feed motion of the wire of line electrode 2, line electrode 2 is transported to be moved relative to the horizontal feed of small circular arc thin slice 1,
Realize the processing of micro groove on small circular arc thin slice 1.Wherein, the precision rotation of main shaft 3 moves or fixes rotary middle point
Manual rotation motion can realize the processing of the arc track of micro groove, and the precision rotation of main shaft 3 or fixed rotary middle point
Manual high-precision rotary advantageously ensure that the form accuracy and processing stability of micro groove.
Some embodiments of the invention, the diameter of section of micro groove is bigger than the diameter of line electrode 2 10 microns -100 microns,
This is conducive to the micro groove on small circular arc thin slice 1 to be matched with line electrode 2 well, to be adapted to the wire of line electrode 2.
Further, pulse power source used by micro-EDM is connected between small circular arc thin slice 1 and line electrode 2, its
In small circular arc thin slice 1 connect positive pole, during power on, using water base or oil base working solution as dielectric 5, consequently facilitating
Processing to micro groove on small circular arc thin slice 1.
The prerotation vane of embodiment according to a second aspect of the present invention, can be discharged grinding technique system by the above-mentioned nick line of rabbet joint
Into, and it is further used for processing the small ball seat surface of high pressure co-rail diesel engine fuel injector.Certainly, first aspect present invention
The processing technology of embodiment applies also for the processing of micro groove on other small arc surfaces of circular arc thin slice 1.
The prerotation vane of embodiment according to a second aspect of the present invention, by using nick on above-mentioned small circular arc thin slice 1
Line of rabbet joint electric discharge grinding technique, can process the nick with circular trace precision higher in the top end face of prerotation vane
Groove, while the micro groove for processing can be matched with line electrode 2, is adapted to the wire of line electrode 2, so that beneficial to interior on conductive material
The processing of recessed small spherical crown surface.
In an embodiment of the present invention, by taking Fig. 2-Fig. 6 as an example, the nick line of rabbet joint electric discharge grinding of description prerotation vane top end face
Processing technology.After piece tentatively installation is directed to, the central axis position of the given line electrode 2 of initial position and prerotation vane will
The top alignment fiducials block 4 of the arc surface of prerotation vane, makes to realize electrical contact operation between prerotation vane and reference block 4, you can demarcate
Shown in the position of datum plane 41, such as Fig. 2 (b), now the pivot of prerotation vane is the thick O1 that centers.As shown in Fig. 2 (a),
Driven by main shaft 3 or manual rotation prerotation vane is rotated clockwise to certain angle [alpha], make the top of reference block 4 and prerotation vane
Electrical contact, can measure the distance between prerotation vane top and datum plane 41 Δ L1, such as shown in Fig. 2 (c), main shaft 3 drives or hand
Dynamic rotary steering piece rotates counterclockwise to certain angle [alpha], reference block 4 is made electrical contact with the top of prerotation vane again, can measure
The distance between prerotation vane top and datum plane 41 Δ L2, it is known that the radius of the arc surface of prerotation vane is r, according to formula (1)
With formula (2), the installation deviation at the axle center of main shaft 3 or manual rotation center and the thick O1 that centers of prerotation vane arc surface can be calculated
Value x and y, according to deviant (x, y) adjust prerotation vane the thick relative position centered between O1 and main shaft 3 or prerotation vane it is thick
Center O1 and the position of manual rotation central point, so that the circular arc of the axle center of main shaft 3 or manual rotation central point and prerotation vane
The coaxial installations of center of circle O in face.
For example, with the O1 as pivot that slightly centers, being directed to piece and turning clockwise 30 °, prerotation vane connects with the electricity of reference block 4
It is 0.2 to measure the distance between prerotation vane circular arc top and datum plane 41 after touch, is then directed to 30 ° of piece rotate counterclockwise,
Prerotation vane measures the distance between now prerotation vane circular arc top and datum plane 41 Δ L after being made electrical contact with reference block 42=
0.08, it is known that the radius of the arc surface of prerotation vane is 0.6, is obtained using formula (1) and formula (2)：X=0.280, y=0.448, from
And determine the center of circle O of arc surface on prerotation vane, make the circle of the axle center of main shaft 3 or manual rotation central point and the arc surface of prerotation vane
The coaxial installations of heart O.
As shown in Figure 3 and Figure 4, after the axle center of main shaft 3 or manual rotation center are coaxial with the center of circle O of the arc surface of prerotation vane,
Horizontal direction where line electrode 2 is adjusted to be oriented to plate plane, and the leading to micro groove to be processed by the axis location of line electrode 2
At the apical position of piece.Herein it should be noted that coaxial with the center of circle O of the arc surface of prerotation vane in manual rotation central point
Afterwards, at this position under the microscope precise scoring lines to go out small conical surface location hole, with top thin rod and this location hole
Coordinate with fixed manual pivot (i.e. the center of circle O of prerotation vane), it is achieved thereby that without spin in the manual rotation of footpath jump error
Heart point location.
As shown in figure 5, after line electrode 2 installs positioning with the arc surface of prerotation vane, in arc surface and the line electrode 2 of prerotation vane
Upper connection pulse power source used by micro-EDM, using positive polarity processing mode (prerotation vane connects pulse power positive pole), utilizes
Then water base or oil base working solution moves or fixes the manual of rotary middle point as dielectric 5 by the precision rotation of main shaft 3
High-precision rotary motion, the slow feed motion of the wire of line electrode 2, line electrode 2 are moved relative to the horizontal feed of prerotation vane, are entered
Electric discharge Grinding Process between line electrode 2 and prerotation vane.
Line electrode 2 gradually feeds to the direction of the arc surface of prerotation vane, until the nick groove processing depth of prerotation vane arc surface
Degree reaches set depth, and such as set depth is 0.02mm, machines the micro groove for obtaining as shown in Figure 6.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or spy
Point can in an appropriate manner be combined in one or more any embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
1. on a kind of small circular arc thin slice the nick line of rabbet joint electric discharge grinding technique, wherein the small circular arc sheet top
The face to be processed of end face is arc surface, it is characterised in that comprised the following steps：
S1, setting datum plane；
S2, the top of the small circular arc thin slice is corresponded to the datum plane, and determine the small circular arc thin slice
The center of circle O of upper arc surface, the step S2 include step in detail below：
S21, a default thick O1 that centers on the small circular arc thin slice, with the thick O1 that centers as pivot will
The small circular arc thin slice rotates to multiple different stations, calculates thick center O1 and the small circular arc thin slice
Deviation between the center of circle O of upper arc surface；
S22, the pivot is moved on the small circular arc thin slice at the center of circle O of arc surface；
S3, offer line electrode, make the axis of the line electrode concordant with the top end points level of the small circular arc thin slice；
S4, make the small circular arc thin slice be that pivot rotates with the center of circle O, and the line electrode is entered along its axis
Give to process micro groove on the top of the small circular arc thin slice；
S5, processing feed the line electrode to reach the depth requirements of the micro groove.
2. the nick line of rabbet joint according to claim 1 electric discharge grinding technique, it is characterised in that the step S21 is also wrapped
Include：
S211, the small circular arc thin slice is rotated to by multiple different stations as pivot with the thick O1 that centers after,
Record the vertical line distance, delta Ln between the top end points and the datum plane of the small circular arc thin slice at different station；
S212, by being calculated on thick center O1 and the small circular arc thin slice between the center of circle O of arc surface
Deviation.
3. the nick line of rabbet joint according to claim 2 electric discharge grinding technique, it is characterised in that in the step S212,
Deviation value (x, y) on thick center O1 and the small circular arc thin slice between the center of circle O of arc surface is by following public affairs
Formula is calculated：
When wherein, using the thick vertical line centered between O1 and the datum plane as reference line, α is the small circular arc
The angle that the central axis of shape thin slice is rotated both clockwise and counterclockwise on the reference line；
Δ L1 be the small circular arc thin slice central axis turned clockwise on the reference line it is described small after angle [alpha]
Vertical line distance between the top end points and the datum plane of circular arc thin slice；
Δ L2 is the central axis of the small circular arc thin slice on described small after the reference line rotated counterclockwise by angle α
Vertical line distance between the top end points and the datum plane of circular arc thin slice；
R is the radius of arc surface on the small circular arc thin slice；
θ is calculated value.
4. the nick line of rabbet joint according to claim 2 electric discharge grinding technique, it is characterised in that the small circular arc is thin
Vertical line distance, delta Ln between the top end points and the datum plane of piece is measured by making electrical contact with metering system.
5. according to any one of claim 1-4 the nick line of rabbet joint electric discharge grinding technique, it is characterised in that by rotation
Turn small circular arc thin slice described in Spindle control to be rotated with its pivot, or manually control the small circular arc thin slice
Rotation.
6. the nick line of rabbet joint according to claim 1 electric discharge grinding technique, it is characterised in that the section of the micro groove
Diameter is bigger than the line electrode diameter 10 microns -100 microns.
7. the nick line of rabbet joint according to claim 6 electric discharge grinding technique, it is characterised in that the small circular arc is thin
Pulse power source used by micro-EDM is connected between piece and the line electrode, wherein the small circular arc thin slice is connected just
Pole.
8. the nick line of rabbet joint according to claim 7 electric discharge grinding technique, it is characterised in that during power on, use
Water base or oil base working solution is used as dielectric.
9. a kind of prerotation vane, the prerotation vane is used to process the small ball seat surface of high pressure co-rail diesel engine fuel injector, and it is special
Levy and be, be made of the nick line of rabbet joint electric discharge grinding technique any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510191201.9A CN104759719B (en) | 2015-04-21 | 2015-04-21 | Nick line of rabbet joint electric discharge grinding technique and prerotation vane on small circular arc thin slice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510191201.9A CN104759719B (en) | 2015-04-21 | 2015-04-21 | Nick line of rabbet joint electric discharge grinding technique and prerotation vane on small circular arc thin slice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104759719A CN104759719A (en) | 2015-07-08 |
| CN104759719B true CN104759719B (en) | 2017-06-06 |
Family
ID=53641992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510191201.9A Active CN104759719B (en) | 2015-04-21 | 2015-04-21 | Nick line of rabbet joint electric discharge grinding technique and prerotation vane on small circular arc thin slice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104759719B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3478730B2 (en) * | 1998-07-16 | 2003-12-15 | 日本碍子株式会社 | Wire electric discharge machine, wire electric discharge method, and extrusion mold |
| JP4472558B2 (en) * | 2005-03-03 | 2010-06-02 | 株式会社ソディック | Wire-cut EDM method |
| CN102500850B (en) * | 2011-10-09 | 2014-01-01 | 清华大学 | Needle valve and precise tiny electric spark processing method for conical surfaces of needle valve body |
| CN102489798A (en) * | 2011-11-21 | 2012-06-13 | 清华大学 | Manufacturing process for insulating side walls of electrodes on line |
| CN103008810B (en) * | 2012-12-12 | 2015-06-17 | 中山市盈科轴承制造有限公司 | Wire-cut electrical discharge machining machine and cutting method |
| CN103506721B (en) * | 2013-09-29 | 2016-05-04 | 青岛元通机械有限公司 | The wire-electrode cutting and processing method of annular workpiece and device |
| CN103600146B (en) * | 2013-10-18 | 2015-12-02 | 清华大学 | The accurate electric grinding process of the small ball seat surface of high pressure co-rail diesel engine fuel injector |
-
2015
- 2015-04-21 CN CN201510191201.9A patent/CN104759719B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104759719A (en) | 2015-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210550116U (en) | Intelligent ring polishing machine tool | |
| CN105033839A (en) | Lithium niobate wafer grinding device with grinding pressure adjusting device and grinding method | |
| CN104551894A (en) | Processing method of L-shaped ZnSe (zinc selenide) turning prism | |
| CN109572922A (en) | A kind of angle locater adjusting wing surface angle for wave aerodone | |
| CN205096664U (en) | High gyration precision bulb cylindrical electrode's online preparation trimming device | |
| CN104759719B (en) | Nick line of rabbet joint electric discharge grinding technique and prerotation vane on small circular arc thin slice | |
| CN103317223A (en) | Ultrasonic welding head assembly and ultrasonic welding machine | |
| TWI732612B (en) | Method for processing probe | |
| CN205002716U (en) | Beverage bottle perpendicularity detector | |
| CN203292695U (en) | Ultrasonic welding head assembly and ultrasonic welding machine | |
| TW201003343A (en) | Method for processing an aspheric lens mold | |
| CN204630520U (en) | Novel single head or double end long screw major diameter of thread cubing | |
| CN205483947U (en) | Single high -speed feed shaft leveling system who wipes testing machine that draws in succession of grit | |
| CN113070744A (en) | Drill bit sharpening assembly | |
| CN210996725U (en) | Rotor milling flutes processing tool | |
| CN108746897B (en) | A kind of spiral microelectrode electrical-chemistry method system and method | |
| CN206148414U (en) | Integrated circuit wafer is aligning device in advance | |
| CN202291731U (en) | Workpiece rotating high-voltage electric spark beam current machining device | |
| CN207372834U (en) | The workbench and numerical control knife sharpener of a kind of numerical control knife sharpener | |
| CN207724598U (en) | A kind of fiber cut limiting tool | |
| CN204248147U (en) | The workpiece control structure of processing is ground for electric spark pendulum | |
| CN108381398A (en) | A kind of swing type hard grinding wheel grinding wheel arc dresser | |
| CN219094800U (en) | Point laser calibration tire sharpening machine | |
| CN110712075A (en) | Negative chamfering machining clamp for cutter and using method of negative chamfering machining clamp | |
| CN105717029A (en) | Leveling system and method for feed shaft of single-grain high-speed continuous scratch testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |