CN112191965A - Electrode guider for machining blade body shielding hole and using method thereof - Google Patents
Electrode guider for machining blade body shielding hole and using method thereof Download PDFInfo
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- CN112191965A CN112191965A CN202011052923.3A CN202011052923A CN112191965A CN 112191965 A CN112191965 A CN 112191965A CN 202011052923 A CN202011052923 A CN 202011052923A CN 112191965 A CN112191965 A CN 112191965A
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- section
- electrode
- guide
- blade body
- bending
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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
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/14—Making holes
-
- 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
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses an electrode guider for machining a blade body shielding hole of a blade and a using method thereof. The electrode guider provided by the invention can quickly and accurately realize that the electrode reaches the blade body shielding processing area, has simple structure, low cost and convenient use, can meet the requirements of processing the air film hole of the blade body shielding area of a duplex or multi-block casting blade, and provides reference experience for solving similar problems.
Description
Technical Field
The invention belongs to the field of aeroengine manufacturing, and particularly relates to an electrode guider for machining a blade body shielding hole of a blade and a using method thereof.
Background
Precision-cast blades with no margin on the blade body are the common type used by guide blades of the turbine part of the modern aeroengine. The integral casting of the twin blades and the integral casting of the multi-blade have become trends. The blade body of the guide blade is designed with air film holes distributed in a multi-angle space mode, and the air film holes are usually machined through an electric spark small hole machine. The process adopts a cylindrical hollow tubular electrode, one end of the electrode is connected with a servo feed shaft, the other end of the electrode penetrates through a section of cylindrical electrode guider with the length of about 30-120 mm, and small hole processing is carried out through the feed motion of the servo shaft. Wherein the axis of the electrode is coaxial with the axis of the guide and parallel to the servo shaft feed orientation. When the original electrode guide guider is used for processing the small hole, the processing of the small hole in a shielding area, particularly a small space shielding area, cannot be realized. To solve this problem, an electrode guide for machining a small hole in a shadow area has been invented.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an electrode guider for machining a blade body shielding hole, which solves the problem that the existing electrode guider cannot machine a small hole in a small-space shielding area of the shielding area.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an electrode director for processing blade body shields hole, includes crooked section and guide section, the crooked section is cylinder cavity tubulose just the one end of crooked section is the bending form, the one end terminal surface of guide section and the bending form terminal surface of crooked section are connected, the other end of guide section is the process end, the process end is the round platform form, and the terminal surface of the outer diameter of process end to the process end reduces gradually, the guide section is hollow structure, the hollow structure of guide section intercommunication bending section's hollow structure.
The bending section is arranged on the outer diameter of the other end of the bending section, the unfixed end of the shaft body is flush with the end face of the other end of the bending section, the shaft seat is cylindrical, an angular control edge is arranged on the shaft seat, and the angular control edge is parallel to a radial line of the shaft seat.
Further, the bending section, the guide section and the angular mandrel are made of stainless steel materials.
Further, still include the protection section, the protection section includes insulating coating or insulating waterproof adhesive tape, the protection section sets up on the surface of crooked section, the crooked form terminal surface of crooked section is stretched out to the one end of protection section, the one end and the protection section interference connection of guide section.
Further, the insulating coating is made of ceramic.
Further, the thickness of the protection section is less than 0.2 mm.
Furthermore, the hollow inner cavity of the guide section is a first through hole, the first through hole close to the bending section is conical, and the large diameter of the conical shape is positioned on the end surface of the guide section contacted with the bending section.
Further, the bending angle of the curved shape is less than 45 degrees, and the bending radius of the curved shape is more than 10 mm.
Furthermore, the inner diameter of the hollow structure of the bending section is 0.1 mm-0.2 mm added to the outer diameter of the guided electrode, and the inner diameter of the hollow structure of the guiding section is 0.02mm added to the outer diameter of the guided electrode.
The invention also provides a using method of the electrode guide device for machining the blade body shielding hole, which comprises the following steps:
step 1: the shaft body of the angular mandrel is connected with a machine tool of a small hole machine, and the included angle between the angular control edge of the shaft seat and the vertical direction is adjusted to meet the requirement;
step 2: the blade to be measured is arranged on a machine tool main shaft of the small hole machine;
and step 3: the electrode of the small hole machine extends into the end face of the angular mandrel from the bent section, and extends into the shielding area of the blade body of the blade through the bent end face of the bent section to process the air film hole.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention provides an electrode guider for processing a blade body shielding hole of a blade, which can lead an electrode to bypass a blade body shielding area of the guide blade and further reach a processing area in the processing process through a bending structure of a bending section while the bending section conducts coarse guiding on the electrode, so that the problem that the conventional electrode guider cannot process a small hole in the blade body shielding area of the blade is solved, and the bending angle and the bending radius of the bending section are based on the purpose of bypassing the blade body shielding area of the blade.
Furthermore, the angular mandrel is matched with the bending section to realize coarse guiding of the electrode, and the angular control edge is arranged on the angular mandrel, so that after the electrode guide device is installed on a machine tool of a small hole machine, the electrode guide device can be quickly aligned by taking the angular control edge as a reference, one angle in an air film hole of the blade body is eliminated, the blade is installed on a main shaft of the machine tool, the other spatial angle is eliminated by the machine tool, the programming of the machine tool is more convenient, and the manufacture of the electrode guide device is simpler.
Furthermore, the bending section, the guide section and the angular mandrel are made of stainless steel materials, so that the anti-rust performance is higher.
Furthermore, the protective section is arranged on the outer surface of the bent section, so that the bent section has an insulating effect, the blade body is prevented from being damaged by accidental discharge of the outer wall of the electrode guider disclosed by the invention due to the fact that the bent section is too close to the blade body in the machining process, and the safety is higher.
Furthermore, the thickness of the protective section in the invention is less than 0.2mm, so that the interference caused by the electrode guider is avoided.
Furthermore, the second through hole of the guide section is conical, so that the smoothness of the electrode entering the guide section from the bending section is improved, and the working efficiency is higher.
Furthermore, the bending angle of the bent shape is less than 45 degrees, and the bent section is more convenient to manufacture and process when the bending radius of the bent shape is more than 10 mm.
Furthermore, the inner diameter of the hollow structure of the bending section is 0.1-0.2 mm larger than the outer diameter of the guided electrode, and the inner diameter of the hollow structure of the guiding section is 0.02mm larger than the outer diameter of the guided electrode, so that smooth insertion of the electrode in the bending section and the guiding section is ensured, and the working efficiency is higher.
The invention also provides a use method of the electrode guider for processing the blade body shielding hole, the electrode can quickly and accurately reach the blade body shielding processing area through the electrode guider, the shielding area of the blade body can be processed, the electrode guider is simple in structure, low in cost and convenient to use, the electrode guider can be quickly aligned on a machine tool through the angular control edge, the working efficiency is high, the angular control edge can eliminate one angle of the blade body air film hole, and when the blade is installed on a main shaft of the machine tool, the other spatial angle is eliminated by the machine tool, so that the programming of the machine tool is more convenient, and the electrode guider is simpler to manufacture.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a left side view of the structure of FIG. 1;
FIG. 3 is an enlarged view of a portion A of FIG. 1;
FIG. 4 is a schematic view of a curved segment;
FIG. 5 is a schematic diagram of the structure of the guide segment;
FIG. 6 is a schematic view of the construction of an angular mandrel;
FIG. 7 is a cross-sectional view of the angular mandrel;
FIG. 8 is an enlarged partial illustration of the assembly of the angular mandrel to the guard segments;
FIG. 9 is a schematic structural view of a guard segment;
in the drawings: 1-shaft seat, 2-shaft body, 3-angular mandrel, 4-angular control edge, 5-bending section, 6-protection section and 7-guiding section;
and b is the range of the bent section provided with the protection section.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1 and 2, the present invention provides an electrode guider for machining a blade body shielding hole of a blade, which comprises an angular mandrel 3 for realizing coarse electrode guiding and angular guider angular control, a bending section 5 for realizing electrode bending to avoid a blade body shielding area, a guiding section 7 for realizing fine electrode guiding, and a protective section 6 with an insulating layer, wherein the bending section 5 is a cylindrical hollow tube, one end of the bending section 5 is bent, a hollow inner cavity of the bending section 5 penetrates through two end faces of the bending section 5, one end face of the guiding section 7 is connected with the bent end face of the bending section 5, the other end of the guiding section 7 is a machined end, the machined end is truncated cone-shaped, an outer diameter of the machined end is gradually reduced towards the end face of the machined end, the guiding section 7 is of a hollow structure, and the hollow structure of the guiding section 7 is communicated with the hollow structure of the bending section 5, as shown in fig. 3, the protective section 6 is arranged on the outer wall of the curved section 5, and the part of the protective section 6, which is more than the curved section 5, is in interference fit with the guide section 7; the other end at crooked section 5 is established to angular mandrel 3 cover, and when crooked section 5 outer wall cladding had protection section 7, angular mandrel 3 cover established the outer wall at protection section 6.
Specifically, as shown in fig. 4, the curved section 5 of the present invention is used to realize a rough guiding component for the electrode to bypass the shielding region of the blade body of the guide blade during the machining process and then reach the machining region; in this embodiment, the inner diameter of the hollow inner cavity of the curved section 5 is 0.1mm to 0.2mm on the basis of the outer diameter of the guided electrode, and the curved shape of the curved portion of the curved section 5 can bypass the blade body shielding region on the basis of the size of the actual blade body shielding region when designing and manufacturing the bending angle and the bending radius, and the bending angle is smaller than 45 degrees, and the bending radius of the curved portion is preferably larger than 10 mm.
As shown in fig. 5, the guide section 7 of the present invention is an electrode precise guide component for the device to realize processing, the inner diameter of the hollow inner cavity of the guide section 7 is 0.02mm plus the outer diameter of the guided electrode, the tolerance is +0.04/+0.02mm, the electrode inlet on the guide section 7 is in butt contact with the electrode outlet end face of the bending section 5, preferably, the hollow inner cavity in the guide section 7 is a first through hole, the first through hole close to the electrode inlet of the guide section 7 is conical, the major diameter of the conical shape is located at the electrode inlet of the guide section 7, in this embodiment, the conical radian of the first through hole is 30 °, which facilitates the electrode to smoothly enter the precise guide part.
As shown in fig. 6, 7 and 8, the angular mandrel is a component of the device for realizing positioning and clamping of the guider and the machine tool, and realizes coarse guiding when an electrode enters the electrode guider by matching with the bending section 5; in this embodiment, the angular mandrel 3 includes an integrally formed shaft seat 1 and a shaft body 2, the shaft seat 1 and the shaft body 2 are both hollow structures, after the angular mandrel 3 is assembled, the unfixed end of the angular mandrel 3 is flush with the other end face of the bending section 5, the shaft seat 1 is cylindrical, an angular control edge 4 is processed on the shaft seat 1, and the angular control edge 4 is parallel to a radial line of the shaft seat 1, in this embodiment, the angular control edge 4 is tangent to the outer wall of the shaft body 2, when the device is installed on a machine tool, the angular control edge 4 of the angular mandrel 3 is used for realizing the angular alignment of the guider, specifically, after the angular mandrel 3 is assembled, the angular control edge 4 and the plane of the bending section 5 form a certain angle, the angle is determined by the direction of the machined hole of the part, preferably, the shaft body 2 of the angular mandrel 3 is provided with a groove, after the electrode guider of the invention is connected with the machine tool, through this section recess and lathe lock, increase connection stability.
As shown in fig. 9, the protection segment 6 is used for realizing the connection between the bending segment 5 and the guiding segment 7, b in fig. 1 is the range where the protection segment 6 is arranged on the bending segment 5, the protection segment 6 comprises an insulating coating or an adhesive waterproof insulating tape to prevent the outer wall of the guider from being externally discharged to hurt the blade body in the processing process, wherein the thickness of the protection segment 6 cannot exceed 0.2 mm; preferably, the insulating coating is made of ceramic.
In the embodiment, the invention is applied to a five-axis electric spark small hole machine.
In the preferred embodiment of the present embodiment, the bending section 5, the guide section 7 and the angular mandrel 3 are all made of stainless steel.
Specifically, the application method of the invention is as follows:
step 1: the shaft body 2 of the angular mandrel 3 is connected with a machine tool of a small hole machine, the included angle between the angular control edge 4 of the shaft seat 1 and the vertical direction is adjusted to meet the requirement, and the elimination of one angle of the blade body air film hole is realized through the angular control edge 4;
step 2: the measured blade is arranged on a machine tool main shaft of a small hole machine, and the other space angle elimination of the blade body air film hole is realized by the machine tool;
and step 3: an electrode of the small hole machine extends into the end face of the angular mandrel 3 from the bent section 5 in a sleeved mode, and the electrode extends into a shielding area of the blade body of the blade through the bent end face of the bent section 5 to process an air film hole.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an electrode director for processing blade body shields hole, its characterized in that, includes bending section (5) and guide section (7), bending section (5) are cylinder cavity tubulose just the one end of bending section (5) is the bending form, the one end terminal surface of guide section (7) and the bending form terminal surface of bending section (5) are connected, the other end of guide section (7) is the processing end, the processing end is round platform form, and the terminal surface of the outer radial processing end of processing end reduces gradually, guide section (7) are hollow structure, the hollow structure of the hollow structure intercommunication bending section (5) of guide section (7).
2. The electrode guider for machining the blade body shielding hole of the blade according to claim 1, further comprising an angular mandrel (3), wherein the angular mandrel (3) comprises an integrally formed shaft seat (1) and a shaft body (2), the shaft seat (1) and the shaft body (2) are both of a hollow structure, the angular mandrel (3) is sleeved on the outer diameter of the other end of the bending section (5), the unfixed end of the shaft body (2) is flush with the end surface of the other end of the bending section (5), the shaft seat (1) is cylindrical, an angular control edge (4) is arranged on the shaft seat (1), and the angular control edge (4) is parallel to a radial line of the shaft seat (1).
3. The electrode guide for machining blade body shielding holes as claimed in claim 2, characterized in that the bending section (5), the guiding section (7) and the angular mandrel (3) are made of stainless steel.
4. The electrode guide for machining blade body shielding holes of the blade according to claim 1, further comprising a protection section (6), wherein the protection section (6) comprises an insulating coating or an insulating waterproof adhesive tape, the protection section (6) is arranged on the outer surface of the bent section (5), one end of the protection section (6) extends out of the bent end face of the bent section (5), and one end of the guide section (6) is in interference connection with the protection section (6).
5. The electrode guide for machining blade body shielding holes of claim 4, wherein the insulating coating is made of ceramic.
6. The electrode guide for machining blade body shielding holes as claimed in claim 4, wherein the thickness of the protective section (6) is less than 0.2 mm.
7. The electrode guide for machining blade body shielding holes of the blades as claimed in claim 1, wherein the hollow inner cavity of the guide section (7) is a first through hole, the first through hole close to the bent section (5) is conical, and the major diameter of the conical shape is located at the end face where the guide section (7) and the bent section (5) are contacted.
8. The electrode guide for machining blade body shielding holes of claim 1, wherein the bending angle of the curve is less than 45 degrees, and the bending radius of the curve is greater than 10 mm.
9. The electrode guide for machining blade body shielding holes of claim 1, wherein the inner diameter of the hollow structure of the bent section (5) is 0.1mm to 0.2mm added to the outer diameter of the guided electrode, and the inner diameter of the hollow structure of the guide section (7) is 0.02mm added to the outer diameter of the guided electrode.
10. Use of an electrode guide for machining a blade body shroud hole according to any one of claims 1 to 9, comprising the steps of:
step 1: the shaft body (2) of the angular mandrel (3) is connected with a machine tool of a small hole machine, and the included angle between the angular control edge (4) of the shaft seat (1) and the vertical direction is adjusted to meet the requirement;
step 2: the blade to be measured is arranged on a machine tool main shaft of the small hole machine;
and step 3: an electrode of the small hole machine extends into the end face of the angular mandrel (3) from the bent section (5) in a sleeved mode, and the electrode extends into a shielding area of the blade body of the blade through the bent end face of the bent section (5) to process an air film hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011052923.3A CN112191965A (en) | 2020-09-29 | 2020-09-29 | Electrode guider for machining blade body shielding hole and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011052923.3A CN112191965A (en) | 2020-09-29 | 2020-09-29 | Electrode guider for machining blade body shielding hole and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112191965A true CN112191965A (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011052923.3A Pending CN112191965A (en) | 2020-09-29 | 2020-09-29 | Electrode guider for machining blade body shielding hole and using method thereof |
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| CN (1) | CN112191965A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003089017A (en) * | 2001-09-12 | 2003-03-25 | Toyota Motor Corp | Electric discharge machining device |
| JP2008302461A (en) * | 2007-06-07 | 2008-12-18 | Denso Corp | Electric discharge machining device and method |
| CN103249514A (en) * | 2010-11-30 | 2013-08-14 | 通用电气公司 | Electrode holder |
| CN103551686A (en) * | 2013-10-25 | 2014-02-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Electrode guide device capable of changing electrode machining direction |
| CN106552975A (en) * | 2015-09-28 | 2017-04-05 | 通用电气公司 | Machining tool and system of processing |
| CN107405708A (en) * | 2015-03-31 | 2017-11-28 | 株式会社牧野铣床制作所 | Discharging pore processor |
| CN109715333A (en) * | 2016-09-08 | 2019-05-03 | 株式会社牧野铣床制作所 | Discharging pore processor |
| CN111182992A (en) * | 2017-09-29 | 2020-05-19 | 赛峰集团 | Device for holding one or more electrodes in electrical discharge machining and method for producing same |
-
2020
- 2020-09-29 CN CN202011052923.3A patent/CN112191965A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003089017A (en) * | 2001-09-12 | 2003-03-25 | Toyota Motor Corp | Electric discharge machining device |
| JP2008302461A (en) * | 2007-06-07 | 2008-12-18 | Denso Corp | Electric discharge machining device and method |
| CN103249514A (en) * | 2010-11-30 | 2013-08-14 | 通用电气公司 | Electrode holder |
| CN103551686A (en) * | 2013-10-25 | 2014-02-05 | 沈阳黎明航空发动机(集团)有限责任公司 | Electrode guide device capable of changing electrode machining direction |
| CN107405708A (en) * | 2015-03-31 | 2017-11-28 | 株式会社牧野铣床制作所 | Discharging pore processor |
| CN106552975A (en) * | 2015-09-28 | 2017-04-05 | 通用电气公司 | Machining tool and system of processing |
| CN109715333A (en) * | 2016-09-08 | 2019-05-03 | 株式会社牧野铣床制作所 | Discharging pore processor |
| CN111182992A (en) * | 2017-09-29 | 2020-05-19 | 赛峰集团 | Device for holding one or more electrodes in electrical discharge machining and method for producing same |
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Application publication date: 20210108 |
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| RJ01 | Rejection of invention patent application after publication |