CN108620698B - Mechanical vibration auxiliary arc milling main shaft based on double-bevel-gear type eccentric wheel - Google Patents
Mechanical vibration auxiliary arc milling main shaft based on double-bevel-gear type eccentric wheel Download PDFInfo
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- CN108620698B CN108620698B CN201810579027.9A CN201810579027A CN108620698B CN 108620698 B CN108620698 B CN 108620698B CN 201810579027 A CN201810579027 A CN 201810579027A CN 108620698 B CN108620698 B CN 108620698B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
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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
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
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Abstract
The invention discloses a mechanical vibration auxiliary arc milling spindle based on a double-pair bevel gear type eccentric wheel, which is provided with a vibration module and a rotation module, wherein the vibration module comprises a roller, a vibration bracket, a bevel gear type eccentric wheel shaft, a bevel gear type eccentric wheel, a balancing weight, a vibration module plastic coupling and a vibration module flexible shaft, and the vibration of a vibration rotating shaft is driven by the vibration module flexible shaft; the rotation module comprises a high-speed rotary joint, a driven gear, driving teeth, a rotation module plastic coupler and a rotation module flexible shaft, and the rotation of the vibration rotation shaft is driven by the rotation module flexible shaft. The invention is purely mechanical, has low cost, and is safe and reliable.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to a mechanical vibration auxiliary arc milling spindle based on a double-pair bevel gear type eccentric wheel.
Background
The applicant finds that the vibration is superimposed on the workpiece electrode in earlier research, and the vibration-assisted arc milling technology adopting the milling mode has the advantages of low processing cost, high stability and high processing flexibility; the superposition of vibration can simultaneously improve the processing speed and reduce the relative loss rate of the electrode on the basis of not reducing the roughness of the processed surface by increasing the average electrode gap and promoting the discharge of an electric corrosion product, and the vibration-assisted arc processing is proved to be an effective composite processing method.
The invention relates to a patent application 201710311358.X, in particular to an inner flushing liquid vibration rotating main shaft for vibration-assisted arc milling, wherein the direction and the strength of a magnetic field emitted by a coil stator ring are controlled through the input of a vibration power supply, so that an NdFeB magnet vibrator ring is driven to vibrate axially, a metal corrugated pipe can isolate the vibration of the NdFeB magnet vibrator ring, the vibration is prevented from being transmitted to a rotating shaft, and an additional power supply is required to be added.
Disclosure of Invention
The invention provides a mechanical vibration auxiliary arc milling main shaft based on a double-bevel-gear type eccentric wheel, which adopts purely mechanical vibration and is safe and reliable.
The technical scheme of the invention is as follows: a mechanical vibration auxiliary arc milling spindle based on a double-pair bevel gear type eccentric wheel comprises a vibration module and a rotation module, wherein the vibration module comprises rollers, a vibration bracket, a bevel gear type eccentric wheel shaft, a bevel gear type eccentric wheel, a balancing weight, a vibration module plastic coupling and a vibration module flexible shaft, the vibration rotation shaft penetrates through a round through hole in the middle of a shaft bracket, a circular groove is formed in the peripheral wall of the upper part of the vibration rotation shaft, four rollers are arranged in the circular groove in a sliding mode and are connected with the vibration bracket which is vertically arranged, the outer end face of the top of the vibration bracket is fixedly provided with the bevel gear type eccentric wheel shaft which is transversely arranged, the bevel gear type eccentric wheel shaft is fixedly connected with the bevel gear type eccentric wheel, adjacent bevel gear type eccentric wheels are mutually meshed, the bevel gear type eccentric wheel is provided with a balancing weight mounting hole, the other end of the vibration module plastic coupling is connected with a vibration module flexible shaft, and the vibration module flexible shaft is driven by a first servo motor;
the rotation module includes high-speed rotary joint, driven gear, the initiative tooth, rotation module plastic coupling, the rotation module flexible axle, the top of vibration rotation axis and nonrust corrugated steel pipe's bottom threaded connection, nonrust corrugated steel pipe's top and high-speed rotary joint's bottom threaded connection, high-speed rotary joint divide into high-speed rotary joint upper portion and high-speed rotary joint lower part, high-speed rotary joint upper portion is fixed by high-speed rotary joint top support, high-speed rotary joint lower part cover is equipped with driven gear, driven gear and driving gear meshing, driving gear and rotation module plastic coupling are connected, rotation module plastic coupling and rotation module flexible axle are connected, the rotation module flexible axle is driven by second servo motor.
Furthermore, square through holes are formed in two sides of the shaft frame and communicated with the circular through holes, the graphite brush is arranged in the square through holes, the inner end face of the graphite brush is in contact with the outer wall face of the vibration rotating shaft, the outer end face of the graphite brush is fixedly connected with a graphite brush compression spring, the other end of the graphite brush compression spring is fixedly connected with a graphite brush cover, and the other end face of the graphite brush cover is fixedly connected with a graphite brush leading-out wire.
Furthermore, the other end of the vibration module flexible shaft is connected with the outer tube of the vibration module flexible shaft, the outer tube of the vibration module flexible shaft is fixedly supported by a fixing frame of the outer tube of the vibration module flexible shaft, and the fixing frame of the outer tube of the vibration module flexible shaft is fixed on the rear support.
Furthermore, the other end of the rotating module flexible shaft is connected with the outer tube of the rotating module flexible shaft, the outer tube of the rotating module flexible shaft is fixed by a fixing frame of the outer tube of the rotating module flexible shaft, and the fixing frame of the outer tube of the rotating module flexible shaft is fixed on the rear support.
Further, the shaft bracket, the graphite brush and the graphite brush compression spring form a sliding bearing.
The invention has the beneficial effects that:
firstly, the device is purely mechanical, low in cost, safe and reliable;
the two pairs of bevel gear type eccentric wheels are in meshed transmission with each other, the generated circumferential forces are mutually offset, the axial forces are mutually superposed, and the excitation effect is good;
thirdly, the vibration part of the vibration rotating shaft is light in weight and can achieve higher amplitude;
fourthly, the amplitude of the vibration rotating shaft is adjusted by mounting balancing weights with different sizes on the bevel gear type eccentric wheel, and the frequency is input and adjusted by a servo electrode of a flexible shaft of the vibration module;
fifthly, the rotating speed of the vibration rotating shaft is input and adjusted by a servo electrode of a flexible shaft of the rotating module;
sixthly, the motor is isolated from the discharge loop, and the isolation effect is obvious.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the pedestal.
Fig. 3 is a schematic view of the connection of the oscillating rotary shaft to the bevel gear eccentric.
Fig. 4 is a schematic view showing the connection of the vibration rotating shaft, the bevel gear type eccentric wheel and the stainless steel bellows.
Fig. 5 is a schematic view of the connection of a stainless steel bellows to a high-speed rotary joint.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings, and the present embodiment is not to be construed as limiting the invention.
As shown in fig. 1, a mechanical vibration assisted arc milling spindle based on a double-pair bevel gear type eccentric wheel comprises a vibration rotating shaft 1, a shaft bracket 2, a rear bracket 3, a vibration bracket 4, a bevel gear type eccentric wheel shaft 5, a bevel gear type eccentric wheel 6, a balancing weight 7, a vibration module plastic coupling 8, a vibration module flexible shaft 9, a vibration module flexible shaft outer tube 10, a vibration module flexible shaft outer tube fixing bracket 11, a stainless steel corrugated tube 12, a high-speed rotary joint 13, a high-speed rotary joint top bracket 14, a driven gear 15, a driving gear 16, a driving gear bracket 17, a rotation module plastic coupling 18, a rotation module flexible shaft 19, a rotation module flexible shaft outer tube 20 and a rotation module flexible shaft outer tube fixing bracket 21.
As shown in fig. 2, the shaft bracket 2 is made of an acrylic material, a circular through hole 201 in the vertical direction penetrates through the middle position of the shaft bracket 2, the vibration rotating shaft 1 penetrates through the circular through hole 201 on the shaft bracket 2, and the upper end surface of the boss 103 of the vibration rotating shaft 1 is attached to the lower end surface of the shaft bracket 2. The rear end face of the shaft bracket 2 is fixed on the rear bracket 3. Square through holes 202 are formed in two sides of the shaft frame 2, the square through holes 202 are communicated with the circular through hole 201, the graphite brush 203 is arranged in the square through holes 202, the inner end face of the graphite brush 203 is an arc face, and the inner end face of the graphite brush 203 is in contact with the outer wall face of the vibration rotating shaft 1. The outer end face of the graphite brush 203 is fixedly connected with a graphite brush hold-down spring 204, the other end of the graphite brush hold-down spring 204 is fixedly connected with a graphite brush cover 205, and the other end face of the graphite brush cover 205 is fixedly connected with a graphite brush lead-out wire 206. The pedestal 2, the graphite brush 203, and the graphite brush pressing spring 204 form a sliding bearing.
As shown in fig. 3, an annular groove 101 is formed in an upper peripheral wall of the vibration rotation shaft 1, four rollers 102 are disposed inside the annular groove 101, the rollers 102 are slidable in the annular groove 101, and the vibration rotation shaft 1 is made of an aluminum alloy.
The roller 102 is connected to a vertically disposed vibration bracket 4, and the vibration bracket 4 forms a sliding bearing with the vibration rotation shaft 1. The outer end face of the top of the vibration support 4 is fixedly provided with a bevel gear type eccentric wheel shaft 5 which is transversely arranged, the bevel gear type eccentric wheel shaft 5 is fixedly connected with a bevel gear type eccentric wheel 6, and the adjacent bevel gear type eccentric wheels 6 are mutually meshed. A balancing weight mounting hole is arranged on the bevel gear type eccentric wheel 6, and a balancing weight 7 is arranged in the balancing weight mounting hole. The balancing weights 7 are divided into different weight specifications, 4 balancing weights 7 with the same weight form a group, and the amplitude can be changed by replacing a group of balancing weights 7 with different weights.
The roller 102, the vibration bracket 4, the bevel gear type eccentric wheel shaft 5, the bevel gear type eccentric wheel 6 and the balancing weight 7 are connected to form a vibration module.
The bevel gear type eccentric wheel 6 is connected with a vibration module plastic coupling 8, the other end of the vibration module plastic coupling 8 is connected with a vibration module flexible shaft 9, and the vibration module flexible shaft 9 is driven by a first servo motor. The other end of the vibration module flexible shaft 9 is connected with a vibration module flexible shaft outer pipe 10, the vibration module flexible shaft outer pipe 10 is fixedly supported by a vibration module flexible shaft outer pipe fixing frame 11, and the vibration module flexible shaft outer pipe fixing frame 11 is fixed on the rear support 3.
As shown in fig. 4, the top of the vibration rotation shaft 1 is provided with a female screw hole, the top of the vibration rotation shaft 1 is in threaded connection with the bottom of the stainless steel corrugated pipe 12, and the inside of the stainless steel corrugated pipe 12 is filled with liquid to form an inner flushing liquid. The corrugated stainless steel pipe 12 has a function of transmitting torque and also has a function of suspending a positioning spring of the vibration rotating shaft 1.
As shown in fig. 5, the top of the stainless steel bellows 12 is screwed to the bottom of the high-speed rotary joint 13, the high-speed rotary joint 13 is divided into a non-rotating high-speed rotary joint upper part 1301 and a rotating high-speed rotary joint lower part 1302, the high-speed rotary joint upper part 1301 is fixed by the high-speed rotary joint top bracket 14, and the high-speed rotary joint top bracket 14 is fixed to the rear bracket 3, so that the high-speed rotary joint upper part 1301 does not rotate. The bottom of the high-speed rotary joint 13 is connected with the stainless steel corrugated pipe 12, the top of the high-speed rotary joint 13 enters liquid through a hose, and the bottom of the high-speed rotary joint 13 flows out of the liquid through the stainless steel corrugated pipe 12.
The lower part 1302 of the high-speed rotary joint is sleeved with a driven gear 15, the driven gear 15 is meshed with a driving gear 16, the driving gear 16 is supported by a driving gear bracket 17, and the driving gear bracket 17 is fixed on the rear bracket 3. The rotation of the high speed rotary joint lower part 1302 is driven to rotate by the driven gear 15.
The driving gear 16 is connected with a rotating module plastic coupler 18, the rotating module plastic coupler 18 is connected with a rotating module flexible shaft 19, and the rotating module flexible shaft 19 is driven by a second servo motor. The other end of the rotating module flexible shaft 19 is connected with a rotating module flexible shaft outer tube 20, the rotating module flexible shaft outer tube 20 is fixed by a rotating module flexible shaft outer tube fixing frame 21, and the rotating module flexible shaft outer tube fixing frame 21 is fixed on the rear support 3.
The high-speed rotary joint 13, the high-speed rotary joint top support 14, the driven gear 15, the driving gear 16, the driving gear support 17, the rotating module plastic coupling 18, the rotating module flexible shaft 19, the rotating module flexible shaft outer tube 20 and the rotating module flexible shaft outer tube fixing frame 21 are connected to form a rotating module.
External electric power is introduced into the vibration rotating shaft 1 through the graphite brush lead-out wire 206, thereby realizing electric discharge machining.
The working principle of the invention is as follows: the servo electrode input drives the vibration module flexible shaft 9 to rotate, the vibration module flexible shaft 9 drives the vibration module plastic coupling 8 to rotate, the vibration module plastic coupling 8 drives the bevel gear type eccentric wheel 6 to rotate, the bevel gear type eccentric wheel 6 drives the vibration rotating shaft 1 to do up-and-down vibration motion, the vibration frequency of the vibration rotating shaft 1 is controlled by adjusting the servo electrode input rotating speed of the vibration module flexible shaft 9, and the amplitude of the vibration rotating shaft 1 is changed by replacing the balancing weight 7.
The servo electrode input drives the rotation module flexible shaft 19 to rotate, the rotation module flexible shaft 19 drives the rotation module plastic coupling 18 to rotate, the rotation module plastic coupling 18 drives the driving gear 16 to rotate, the driving gear 16 drives the driven gear 15 to rotate, the driven gear 15 drives the high-speed rotary joint lower part 1302 to rotate, so that the stainless steel corrugated pipe 12 is driven to rotate, the stainless steel corrugated pipe 12 drives the rotary motion of the vibration rotating shaft 1, and the rotation speed of the vibration rotating shaft 1 is controlled by the servo electrode input rotation speed of the rotation module flexible shaft 19.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a mechanical type vibration auxiliary arc mills main shaft based on two bevel gear formula eccentric wheels which characterized in that: the vibration module comprises rollers, a vibration bracket, a bevel gear eccentric wheel shaft, a bevel gear eccentric wheel, a balancing weight, a vibration module plastic coupling and a vibration module flexible shaft, wherein the vibration rotating shaft penetrates through a round through hole in the middle of a shaft bracket, a circular groove is formed in the peripheral wall of the upper part of the vibration rotating shaft, four rollers are arranged in the circular groove in a sliding manner, the rollers are connected with the vibration bracket which is vertically arranged, the outer end surface of the top of the vibration bracket is fixedly provided with the bevel gear eccentric wheel shaft which is transversely arranged, the bevel gear eccentric wheel shaft is fixedly connected with the bevel gear eccentric wheel, the adjacent bevel gear eccentric wheels are mutually meshed, the bevel gear eccentric wheel is provided with a balancing weight mounting hole, the balancing weight is arranged in the balancing weight mounting hole, the bevel gear eccentric wheel is connected with the vibration module plastic coupling, and, the vibration module flexible shaft is driven by a first servo motor;
the rotation module includes high-speed rotary joint, driven gear, the initiative tooth, rotation module plastic coupling, the rotation module flexible axle, the top of vibration rotation axis and nonrust corrugated steel pipe's bottom threaded connection, nonrust corrugated steel pipe's top and high-speed rotary joint's bottom threaded connection, high-speed rotary joint divide into high-speed rotary joint upper portion and high-speed rotary joint lower part, high-speed rotary joint upper portion is fixed by high-speed rotary joint top support, high-speed rotary joint lower part cover is equipped with driven gear, driven gear and driving gear meshing, driving gear and rotation module plastic coupling are connected, rotation module plastic coupling and rotation module flexible axle are connected, the rotation module flexible axle is driven by second servo motor.
2. The mechanical vibration assisted arc milling spindle based on the double-bevel-gear eccentric wheel according to claim 1, characterized in that: the vibration shaft is characterized in that square through holes are formed in two sides of the shaft frame and communicated with the circular through holes, the graphite brush is arranged in the square through holes, the inner end face of the graphite brush is in contact with the outer wall face of the vibration rotating shaft, the outer end face of the graphite brush is fixedly connected with a graphite brush compression spring, the other end of the graphite brush compression spring is fixedly connected with a graphite brush cover, and the other end face of the graphite brush cover is fixedly connected with a graphite brush leading-out wire.
3. The mechanical vibration assisted arc milling spindle based on double pair of bevel gears eccentrics of claim 2, characterized in that: the other end of the vibration module flexible shaft is connected with the vibration module flexible shaft outer pipe, the vibration module flexible shaft outer pipe is fixedly supported by a vibration module flexible shaft outer pipe fixing frame, and the vibration module flexible shaft outer pipe fixing frame is fixed on the rear support.
4. The mechanical vibration assisted arc milling spindle based on the double-bevel-gear eccentric wheel according to claim 3, characterized in that: the other end of the rotating module flexible shaft is connected with the outer tube of the rotating module flexible shaft, the outer tube of the rotating module flexible shaft is fixed by a fixing frame of the outer tube of the rotating module flexible shaft, and the fixing frame of the outer tube of the rotating module flexible shaft is fixed on the rear support.
5. The mechanical vibration assisted arc milling spindle based on double pair of bevel gears eccentrics of claim 2, characterized in that: the shaft bracket, the graphite electric brush and the graphite electric brush compression spring form a sliding bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579027.9A CN108620698B (en) | 2018-06-06 | 2018-06-06 | Mechanical vibration auxiliary arc milling main shaft based on double-bevel-gear type eccentric wheel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810579027.9A CN108620698B (en) | 2018-06-06 | 2018-06-06 | Mechanical vibration auxiliary arc milling main shaft based on double-bevel-gear type eccentric wheel |
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| CN108620698A CN108620698A (en) | 2018-10-09 |
| CN108620698B true CN108620698B (en) | 2020-02-07 |
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| CN201810579027.9A Active CN108620698B (en) | 2018-06-06 | 2018-06-06 | Mechanical vibration auxiliary arc milling main shaft based on double-bevel-gear type eccentric wheel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109277653B (en) * | 2018-10-10 | 2020-12-29 | 南京工程学院 | Vibration-assisted arc milling spindle based on positive and negative pressure double cylinders |
| CN110025132B (en) * | 2019-04-28 | 2021-12-28 | 余庆县兴达家具制造有限公司 | Computer desk with heat dissipation function |
| CN112222547B (en) * | 2020-09-29 | 2023-03-14 | 扬州大学 | Efficient electrochemical machining device and method for multiple-cavity structure on inner surface of casing |
| CN112664591B (en) * | 2021-03-17 | 2021-06-18 | 龙口市和义机械配件有限公司 | Multifunctional brake disc auxiliary system |
| CN114683236A (en) * | 2022-03-21 | 2022-07-01 | 南京工程学院 | Commodity circulation carrying trolley based on vision |
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| CN2253687Y (en) * | 1996-05-29 | 1997-05-07 | 晏伯桥 | Electric driving flexible axle type one-direction vibrating device |
| CN2291267Y (en) * | 1997-03-20 | 1998-09-16 | 煤炭科学研究总院南京研究所 | High-efficiency percussion arrangement of eccectric slide electric drill |
| CN103792058A (en) * | 2014-03-12 | 2014-05-14 | 山东大学 | Mechanical type high frequency vibration table |
| CN104148754A (en) * | 2014-08-22 | 2014-11-19 | 常州工学院 | Vibration movement device for main shaft of numerical control electrochemical machining machine tool |
| CN107008980A (en) * | 2017-05-04 | 2017-08-04 | 南京工程学院 | One kind vibration assistant electric arc Milling Process vibrates live spindle with interior fliud flushing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4742613B2 (en) * | 2005-02-24 | 2011-08-10 | マックス株式会社 | Drill tool |
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2018
- 2018-06-06 CN CN201810579027.9A patent/CN108620698B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2253687Y (en) * | 1996-05-29 | 1997-05-07 | 晏伯桥 | Electric driving flexible axle type one-direction vibrating device |
| CN2291267Y (en) * | 1997-03-20 | 1998-09-16 | 煤炭科学研究总院南京研究所 | High-efficiency percussion arrangement of eccectric slide electric drill |
| CN103792058A (en) * | 2014-03-12 | 2014-05-14 | 山东大学 | Mechanical type high frequency vibration table |
| CN104148754A (en) * | 2014-08-22 | 2014-11-19 | 常州工学院 | Vibration movement device for main shaft of numerical control electrochemical machining machine tool |
| CN107008980A (en) * | 2017-05-04 | 2017-08-04 | 南京工程学院 | One kind vibration assistant electric arc Milling Process vibrates live spindle with interior fliud flushing |
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