CN109807411A - A kind of shunting disk processing electric pulse fixture and its application method - Google Patents
A kind of shunting disk processing electric pulse fixture and its application method Download PDFInfo
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- CN109807411A CN109807411A CN201711167981.9A CN201711167981A CN109807411A CN 109807411 A CN109807411 A CN 109807411A CN 201711167981 A CN201711167981 A CN 201711167981A CN 109807411 A CN109807411 A CN 109807411A
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Abstract
The present invention relates to a kind of shunting disk processing electric pulse fixture and its application methods, the fixture includes rear end cap, mandrel and the drive end bearing bracket being coaxially disposed when assembly, rear end cap includes rear end cap inner and outer rings, rear end cap radial support, rear end cap axis hole is arranged in the center of rear end cap inner ring, horizontal plane is arranged in bottom end, and vertical datum level is arranged in front end face；Drive end bearing bracket includes drive end bearing bracket inner and outer rings, drive end bearing bracket radial support；The tail end of mandrel passes through rear end cap axis hole and machine tool chief axis transmission cooperation and is coaxially disposed when assembly, and mandrel is fixedly linked with rear end cap inner ring, and the central shaft hole that the front end of mandrel passes through shunting disk is fixedly linked with drive end bearing bracket inner ring；In the bottom end of rear end cap outer ring, horizontal plane is set, vertical datum level is arranged in front end face setting and the central axis upright of horizontal plane, rear end cap, so that lathe can establish accurately coordinate system by rear end cap outer ring, the precise positioning to fixture, shunting disk to be processed is realized.
Description
Technical field
The present invention relates to air equipment technical field, electric pulse fixture and its user are used in especially a kind of shunting disk processing
Method.
Background technique
In the prior art, in aero-engine technology field, tubular diffuser is used in turboshaft engine compressor as master
One of runner elements are wanted, are made of shunting disk and diffuser pipe；The gas of compressor impeller outlet has very high speed, it is therefore desirable to
Diffuser is installed at impeller outlet, gas kinetic energy is made to be converted into potential energy, increases static pressure.Chinese patent Authorization Notice No.
The compressor tubular diffuser that CN205592195U is announced, shape and structure is as shown in Figures 1 to 4, including shunting disk 1 and expansion
Pressure pipe 2, the ring wall 13 of circular shunting disk 1 is interior to be equipped with baffle 16, so that shunting disk, which radially separates, respectively constitutes shunting disk 1
Air inlet side 12 and the central shaft hole 14 for installing transmission shaft is arranged in gas side 11, the center of baffle 16 out, shunting disk goes out gas side
It is uniformly distributed 25 racetrack venthole 5 and 25 boss 3 on 11 outer ring surface, gas outlet 4, gas outlet 4 are set on each boss 3
It is connected through diffuser pipe 2 with venthole 5, the outboard end of venthole 5 is equipped with concave station 51, the circumferentially arranged ring of the air inlet side of ring wall 13
Limit hole 17 is arranged in the edge of platform 15, central shaft hole；It is different in racetrack venthole 5 at the 25 of the shunting disk according to the design needs
Shape runner type face is no surplus hot investment casting, however in the actual production process, since runner gusset is thin, casting is also easy to produce scarce
It falls into, when actual production not can guarantee no surplus casting, respectively have 4~6 millimeters of surpluses, above-mentioned processing at runner gusset or so when delivery
Surplus needs to remove by machining process.Since machining allowance position is special and tunnel inlets width is narrow, using common gold
When blanking method removes the surplus at gusset, it can be interfered with part during Tool advance, lead to not remove；Using five axis
Device for digit control spark forming machine tool, which carries out electrical discharge machining, becomes a kind of ideal selection, by attached drawing 1 it is found that tubular diffuser
Shape is more complicated, and is relatively large in diameter, maximum outside diameter Φ 475mm, minimum diameter (i.e. central shaft hole internal diameter) Φ 97+0.05Mm, zero
86.55 ± 0.05mm of part total thickness not can satisfy above-mentioned requirement in matched fixture.Due to tubular diffuser itself
Heavier-weight, fixture need to compress part and drive part with lathe main axis, therefore it is flexible, light to design a kind of rotation
Reliable fixture and its application method are those skilled in the art's technical problems urgently to be solved.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of flexible, light reliable shunting disk processing electric pulses of rotation
Fixture and its application method.
In order to solve the above technical problems, shunting disk processing electric pulse fixture provided by the invention, comprising: coaxial when assembly
Rear end cap, mandrel and the drive end bearing bracket of setting, the rear end cap include rear end cap inner and outer rings and for connecting rear end cap inner and outer rings
Rear end cap radial support, rear end cap axis hole, the bottom end setting of the rear end cap outer ring is arranged in the center of the rear end cap inner ring
Vertical datum level is arranged in the front end face of horizontal plane, the rear end cap outer ring；The drive end bearing bracket includes drive end bearing bracket inner and outer rings and use
The tail end of mandrel passes through rear end cap axis hole and machine tool chief axis when the drive end bearing bracket radial support of connection drive end bearing bracket inner and outer rings, assembly
Transmission cooperates and is coaxially disposed, and the mandrel is fixedly linked with the rear end cap inner ring, and the front end of the mandrel passes through shunting disk
Central shaft hole be fixedly linked with drive end bearing bracket inner ring.
Further, the mandrel from back to front successively include be integrally formed setting rear connecting portion, rear end cap limiting section,
Middle interconnecting piece, shunting disk limiting section, shunting disk plug division, front end interconnecting piece, the diameter of the rear connecting portion are less than described
The internal diameter of rear end cap axis hole, the diameter of the rear end cap limiting section are greater than the internal diameter of the rear end cap axis hole, the shunting disk limit
The diameter in position portion is greater than the internal diameter of the central shaft hole, and the diameter of the shunting disk plug division is interior not less than the central shaft hole
Diameter, the diameter of the front end interconnecting piece are less than the internal diameter of the central shaft hole；The rear connecting portion of mandrel passes through rear end when assembly
Lid axis hole and machine tool chief axis transmission cooperate and are coaxially disposed, and the rear end cap limiting section is fixedly linked with the rear end cap inner ring,
The central shaft hole that the front end interconnecting piece passes through shunting disk is fixedly linked with drive end bearing bracket inner ring.
Further, uniformly distributed multiple pillar support boss on the front end face of the rear end cap outer ring, each pillar support boss
The front end face of highly identical and each pillar support boss is placed on same plane, is used to form vertical datum level, the vertical benchmark
Face and horizontal plane, rear end cap central axis upright be arranged, the front end face of pillar support boss and shunting disk when assembly
Land is in contact, and rests against to shunting disk formation.
Further, the axially disposed stepped hole of rear end cap inner ring, the rear end cap limiting section of the mandrel are set along axial direction
Screw hole is set, so that the rear end cap inner ring and rear end cap limiting section can be fixed through bolt, is easily assembled.
Further, the axially disposed jack compatible with shunting disk limit hole of the shunting disk limiting section, the shunting
Limit hole of the disk limiting section through spacer pin and shunting disk is mating, is angularly positioned to shunting disk, so that shunting disk and core
Axis rotates synchronously.
Further, corner portion is arranged in the front end face edge of the shunting disk plug division, so that in the insertion of shunting disk plug division
It is oriented to when arbor hole by corner portion, reduces installation resistance.
Further, drive end bearing bracket axis hole is arranged in the center of the drive end bearing bracket inner ring, and the front of mandrel front end interconnecting piece is set
Set threaded portion, shunting disk processing electric pulse fixture further includes nut compatible with threaded portion, filling pad, when assembly described in
Threaded portion is arranged across the drive end bearing bracket axis hole, and mandrel is fixed by nut, filling pad.
Further, the drive end bearing bracket inner ring is placed in the outside of the drive end bearing bracket outer ring, so that drive end bearing bracket outer ring rear end
When the outlet side edge of the shunting disk is close in face, there are gaps between drive end bearing bracket inner ring and shunting disk, enhance fastening effect.
The above-mentioned shunting disk processing application method of electric pulse fixture, includes the following steps:
A, the rear connecting portion of mandrel is mating with machine tool chief axis after the rear end cap axis hole of rear end cap and carries out through screw
It is fixed, so that mandrel and machine tool chief axis transmission cooperation and coaxial arrangement.
B, rear connecting portion is fixed with rear end cap inner ring through bolt and is connected, and adjusted to the level of rear end cap outer ring
Datum level is horizontally disposed.
C, the central shaft hole of shunting disk is passed through to the front end interconnecting piece of mandrel, so that the land of shunting disk air inlet side is close to institute
The front end face of rear end cap pillar support boss is stated, shunting disk plug division is interference fitted in shunting disk central shaft hole.
D, by the jack and shunting disk limit hole of spacer pin insertion shunting disk limiting section, shunting disk is angularly positioned.
E, the rear end cap axis hole of drive end bearing bracket is socketed in front end interconnecting piece, so that before drive end bearing bracket inner ring is stretched out in threaded portion
End, puts on U row gasket, tightens nut and the rear end face abutting shunting disk of drive end bearing bracket outer ring is made to go out gas side, complete clamping.
The technical effect of invention: (1) of the invention shunting disk processing electric pulse fixture, compared with the existing technology, rear
Horizontal plane is arranged in the bottom end of end cap outer ring, forms vertical benchmark in the front end face of rear end cap outer ring using pillar support boss
The central axis upright setting of face, the vertical datum level and horizontal plane, rear end cap, the central axis of rear end cap and lathe master
Axis coaxial arrangement is realized to fixture, shunting disk to be processed so that lathe can establish accurately coordinate system by rear end cap outer ring
Precise positioning；(2) drive end bearing bracket, rear end cap use the design of inner and outer rings and radial support, conducive to the overall weight for mitigating fixture；
(3) shunting disk limiting section and shunting disk are angularly positioned through spacer pin, it can be ensured that mandrel and shunting disk synchronous rotary；(4) divide
Flow table plug division and shunting disk central shaft hole are interference fitted, so that fixture, shunting disk are opposing stationary in rotary course, can be reduced
Fixture, shunting disk angularly jumping in lathe rotary course, improve machining accuracy.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings of the specification:
Fig. 1 is the schematic perspective view of tubular diffuser；
Fig. 2 is the radial cross-section of tubular diffuser；
Fig. 3 is the cross-sectional view of tubular diffuser other direction；
Fig. 4 is the partial enlarged view of venthole in tubular diffuser；
Fig. 5 is the cross-sectional view after shunting disk processing electric pulse fixture assembly of the invention；
Fig. 6 is the structural schematic diagram of the rear end cap of shunting disk processing electric pulse fixture of the present invention；
Fig. 7 is the sectional view along A-A of Fig. 6；
Fig. 8 is the schematic diagram of the section structure of the mandrel of shunting disk processing electric pulse fixture of the present invention；
Fig. 9 is the structural schematic diagram of the drive end bearing bracket of shunting disk processing electric pulse fixture of the present invention；
Figure 10 is the C-C of Fig. 9 to cross-sectional view；
Figure 11 is the cross-sectional view after shunting disk processing electric pulse fixture and tubular diffuser clamping.
In figure: shunting disk 1, gas side 11, air inlet side 12, ring wall 13, central shaft hole 14, land 15, baffle 16 limit out
Hole 17, diffuser pipe 2, boss 3, gas outlet 4, venthole 5, concave station 51, air inlet 6, rear end cap 7, bolt 71, rear end cap outer ring
72, rear end cap inner ring 73, rear end cap radial support 74, horizontal plane 75, rear end cap axis hole 76, support rim 77, stepped hole
78, mandrel 8, screw hole 80, spacer pin 81, rear connecting portion 82, rear end cap limiting section 83, middle interconnecting piece 84, shunting disk limit
Portion 85, shunting disk plug division 86, front end interconnecting piece 87, threaded portion 88, jack 89, drive end bearing bracket 9, gasket 91, nut 92, drive end bearing bracket
Outer ring 93, drive end bearing bracket inner ring 94, drive end bearing bracket radial support 95, drive end bearing bracket axis hole 96.
Specific embodiment
Embodiment 1 is as shown in figure 5, the shunting disk of the present embodiment is processed and uses electric pulse fixture, comprising: coaxially sets when assembly
Rear end cap 7, mandrel 8 and the drive end bearing bracket 9 set, as shown in Figure 6 to 7, rear end cap 7 include coaxial arrangement rear end cap inner ring 73,
Rear end cap outer ring 72, be fixed between rear end cap inner ring 73, rear end cap outer ring 72 through 4 rear end cap radial supports 74 it is connected,
Rear end cap axis hole 76 is arranged in the center of rear end cap inner ring 73, and horizontal plane 75, rear end cap is arranged in the bottom end of rear end cap outer ring 72
Uniformly distributed 8 pillar support boss 77 on the front end face of outer ring 72, the height of each pillar support boss 77 is identical and each pillar support
The front end face of boss 77 is placed on same plane, is used to form vertical datum level, the vertical datum level and horizontal plane 75, after
The central axis upright of end cap 7 is arranged.
As shown in Fig. 9 to Figure 10, drive end bearing bracket 9 equally include include drive end bearing bracket inner ring 94, drive end bearing bracket outer ring 93, in drive end bearing bracket
It is fixedly connected between ring 94 and drive end bearing bracket outer ring 93 through 4 drive end bearing bracket radial supports 95, rear end cap outer ring 93, drive end bearing bracket outer ring 94
Size be adapted with the maximum gauge of shunting disk 1.
As shown in figure 8, mandrel 8 successively includes the rear connecting portion 82 for being integrally formed setting, rear end cap limit from back to front
Portion 83, middle interconnecting piece 84, shunting disk limiting section 85, shunting disk plug division 86, front end interconnecting piece 87, rear connecting portion 82 it is straight
Diameter is less than the internal diameter of rear end cap axis hole 76, and the diameter of rear end cap limiting section 83 is greater than the internal diameter of rear end cap axis hole 76, shunting disk limit
The diameter in position portion 85 is greater than the internal diameter of central shaft hole 14, and the diameter of shunting disk plug division 86 is not less than the internal diameter of central shaft hole 14,
Such as the internal diameter of central shaft hole 14 is 97+0.05The diameter of mm, shunting disk plug division 86 isMm, front end interconnecting piece 87
Diameter is less than the internal diameter of central shaft hole 14；Corner portion is arranged in the front end face edge of shunting disk plug division 86, so that shunting disk grafting
Portion 86 is oriented to when being inserted into central shaft hole 14 by corner portion；Middle interconnecting piece 84 is for connecting rear end cap limiting section 83 and shunting
Disk limiting section 85, and diameter is less than the diameter of rear end cap limiting section 83 and shunting disk limiting section 85, to mitigate 8 weight of mandrel.
The axially disposed stepped hole 78 of rear end cap inner ring 73, the axially disposed screw hole 80 of rear end cap limiting section 83 of mandrel 8,
So that rear end cap inner ring 73 and rear end cap limiting section 83 can be fixedly connected through dormant bolt 71；The center of drive end bearing bracket inner ring 94
Drive end bearing bracket axis hole 96 is set, and threaded portion 88 is arranged in the front of mandrel front end interconnecting piece 87, and shunting disk processing uses electric pulse fixture also
Including nut 82 compatible with threaded portion 88, filling pad 91, threaded portion 88 is arranged across drive end bearing bracket axis hole 96 when assembly, by
Nut 92, filling pad 91 carry out mandrel 8 to tighten fixation；Shunting disk limiting section 85 is axially disposed with shunting disk limit hole 17
Compatible jack 89, shunting disk limiting section 85 is mating through spacer pin 81 and the limit hole 17 of shunting disk 1, to shunting disk 1
It is angularly positioned, so that shunting disk 1 and mandrel 8 rotate synchronously.
Preferably, drive end bearing bracket inner ring 94 is placed in the outside of drive end bearing bracket outer ring 93, so that drive end bearing bracket 9 is disc-shaped, drive end bearing bracket
94 rear end face of outer ring is close to when going out 11 edge of gas side of shunting disk 1, and there are gaps between drive end bearing bracket inner ring 93 and shunting disk 1, increases
Strong fastening effect.
Embodiment 2
Shunting disk processing in embodiment 1 application method of electric pulse fixture, includes the following steps:
A, the rear connecting portion 82 of mandrel 8 is passed through mating with machine tool chief axis and pass through after the rear end cap axis hole 76 of rear end cap 7
Screw is fixed, so that mandrel 8 and machine tool chief axis transmission cooperation and coaxial arrangement.
B, rear connecting portion 82 is fixed with rear end cap inner ring 73 through bolt 71 and is connected, and adjusted to rear end cap outer ring
72 horizontal plane 75 is horizontally disposed.
C, the front end interconnecting piece 87 that the central shaft hole 14 of shunting disk 1 is passed through to mandrel 8, so that the land of shunting disk air inlet side
15 are close to the front end face of rear end cap pillar support boss 77, rest on shunting disk land 15 by the vertical datum level of rear end cap 7
On end face, shunting disk limiting section 85 limits shunting disk baffle 16, completes the levelling of vertical direction, shunting disk plug division 86
It is interference fitted in shunting disk central shaft hole 14.
D, spacer pin 81 is inserted into the jack 89 and shunting disk limit hole 17 of shunting disk limiting section 85, shunting disk 1 is carried out
Angular positioning.
E, the drive end bearing bracket axis hole 96 of drive end bearing bracket 9 is socketed in front end interconnecting piece 87, so that threaded portion 88 is stretched out in drive end bearing bracket
The front end of ring 94 puts on U row gasket 91, tightens nut 92 and the rear end face abutting shunting disk of drive end bearing bracket outer ring 93 is made to go out gas side 11
Edge goes out gas side 11 to shunting disk by drive end bearing bracket outer ring 93 and carries out abutting support, completes clamping.
Pair during installation, the method that cold charge cooperation can be used in the central shaft hole 14 of mandrel 8 and shunting disk 1 is assembled, i.e.,
Mandrel 8 carries out cooling so that the shunting disk plug division 86 of mandrel 8 contracts on cooling afterwards rapidly is inserted into the central shaft hole 14 of shunting disk 1
Shunting disk plug division 86, it is ensured that the interference fit of shunting disk plug division 86 and shunting disk central shaft hole 14.
After the completion of clamping, according to the five-shaft numerical control electric machining program and electrical parameter of establishment, machine tool chief axis is driven by fixture
Shunting disk rotates around the spindle, and shaped electrode device protrudes into the surplus of removal runner gusset in the runner of venthole, finally by polishing
Surface galvanic corrosion layer and casting high point after electrical discharge machining of skimming is until qualified.Cooperated by shaped electrode, using electric pulse plus
The scheme of surplus is easy to operate at work removal part runner gusset, works well, and solves venthole inner flow passage gusset surplus and goes
The problem removed.
Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and is not to of the invention
The restriction of embodiment.For those of ordinary skill in the art, it can also be made on the basis of the above description
Its various forms of variation or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
Bright spiritual changes and variations that derived from are still in the protection scope of this invention.
Claims (9)
1. a kind of shunting disk processing electric pulse fixture characterized by comprising rear end cap, the mandrel being coaxially disposed when assembly
And drive end bearing bracket, the rear end cap include rear end cap inner and outer rings and the rear end cap radial support for connecting rear end cap inner and outer rings,
Rear end cap axis hole is arranged in the center of the rear end cap inner ring, and horizontal plane, the rear end is arranged in the bottom end of the rear end cap outer ring
Vertical datum level is arranged in the front end face of lid outer ring；The drive end bearing bracket includes drive end bearing bracket inner and outer rings and inside and outside for connecting drive end bearing bracket
The drive end bearing bracket radial support of ring；The tail end of mandrel passes through rear end cap axis hole when assembly and machine tool chief axis transmission cooperates and coaxial sets
It sets, the mandrel is fixedly linked with the rear end cap inner ring, and the front end of the mandrel passes through central shaft hole and the front end of shunting disk
Lid inner ring is fixedly linked.
2. shunting disk according to claim 1 processing electric pulse fixture, which is characterized in that the mandrel from back to front according to
Secondary includes being integrally formed the rear connecting portion being arranged, rear end cap limiting section, middle interconnecting piece, shunting disk limiting section, shunting disk to insert
Socket part, front end interconnecting piece, the diameter of the rear connecting portion are less than the internal diameter of the rear end cap axis hole, the rear end cap limiting section
Diameter be greater than the internal diameter of the rear end cap axis hole, the diameter of the shunting disk limiting section is greater than the internal diameter of the central shaft hole,
The diameter of the shunting disk plug division is not less than the internal diameter of the central shaft hole, and the diameter of the front end interconnecting piece is less than in described
The internal diameter of arbor hole；The rear connecting portion of mandrel passes through rear end cap axis hole when assembly and machine tool chief axis transmission cooperates and coaxial sets
It sets, the rear end cap limiting section is fixedly linked with the rear end cap inner ring, and the front end interconnecting piece passes through the central axis of shunting disk
Hole is fixedly linked with drive end bearing bracket inner ring.
3. shunting disk processing electric pulse fixture according to claim 1 or 2, which is characterized in that the rear end cap outer ring
Front end face on uniformly distributed multiple pillar support boss, the height of each pillar support boss is identical and the front end of each pillar support boss
Face is placed on same plane, is used to form vertical datum level, the central axis of the vertical datum level and horizontal plane, rear end cap
It is vertically arranged.
4. shunting disk processing electric pulse fixture according to claim 3, which is characterized in that the rear end cap inner ring is along axis
To setting stepped hole, the axially disposed screw hole of rear end cap limiting section of the mandrel, so that the rear end cap inner ring and rear end cap
Limiting section is fixed through bolt.
5. shunting disk processing electric pulse fixture according to claim 4, which is characterized in that shunting disk limiting section edge
Axial that jack compatible with shunting disk limit hole is arranged, the shunting disk limiting section is inserted through the limit hole of spacer pin and shunting disk
Connect cooperation.
6. shunting disk processing electric pulse fixture according to claim 5, which is characterized in that the shunting disk plug division
Corner portion is arranged in front end face edge.
7. shunting disk processing electric pulse fixture according to claim 6, which is characterized in that in the drive end bearing bracket inner ring
Drive end bearing bracket axis hole is arranged in the heart, and threaded portion is arranged in the front of mandrel front end interconnecting piece, and shunting disk processing uses electric pulse fixture also
Including nut compatible with threaded portion, filling pad, when assembly, the threaded portion was arranged across the drive end bearing bracket axis hole, by spiral shell
Mandrel is fixed in female, filling pad.
8. shunting disk processing electric pulse fixture according to claim 7, which is characterized in that the drive end bearing bracket inner ring is placed in
The outside of the drive end bearing bracket inner ring, so that the drive end bearing bracket outer ring rear end face is close to when going out gas side of the shunting disk, drive end bearing bracket
There are gaps between inner ring and shunting disk.
9. the application method of fixture according to claim 8, which comprises the steps of:
A, the rear connecting portion of mandrel is mating with machine tool chief axis after the rear end cap axis hole of rear end cap and carries out through screw
It is fixed, so that mandrel and machine tool chief axis transmission cooperation and coaxial arrangement；
B, rear connecting portion is fixed with rear end cap inner ring through bolt and is connected, and adjusted to the horizontal reference of rear end cap outer ring
Face is horizontally disposed；
C, the central shaft hole of shunting disk is passed through to the front end interconnecting piece of mandrel, so that after the land abutting of shunting disk air inlet side is described
The front end face of end cap cylindricality support rim, shunting disk plug division are interference fitted in shunting disk central shaft hole；
D, by the jack and shunting disk limit hole of spacer pin insertion shunting disk limiting section, shunting disk is angularly positioned；E, will
The drive end bearing bracket axis hole of drive end bearing bracket is socketed in front end interconnecting piece, so that the front end of drive end bearing bracket inner ring is stretched out in threaded portion, puts on U row pad
Piece tightens nut and the rear end face abutting shunting disk of drive end bearing bracket outer ring is made to go out gas side, completes clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167981.9A CN109807411A (en) | 2017-11-21 | 2017-11-21 | A kind of shunting disk processing electric pulse fixture and its application method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167981.9A CN109807411A (en) | 2017-11-21 | 2017-11-21 | A kind of shunting disk processing electric pulse fixture and its application method |
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| CN109807411A true CN109807411A (en) | 2019-05-28 |
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| CN201711167981.9A Pending CN109807411A (en) | 2017-11-21 | 2017-11-21 | A kind of shunting disk processing electric pulse fixture and its application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114888375A (en) * | 2022-06-24 | 2022-08-12 | 苏州新火花机床有限公司 | Radial gas distribution and orientation mechanism of electric spark rotary machining shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888375A (en) * | 2022-06-24 | 2022-08-12 | 苏州新火花机床有限公司 | Radial gas distribution and orientation mechanism of electric spark rotary machining shaft |
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Application publication date: 20190528 |