CN112247296B - Rotary ultrasonic composite trepanning electrochemical machining device and method - Google Patents
Rotary ultrasonic composite trepanning electrochemical machining device and method Download PDFInfo
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- CN112247296B CN112247296B CN202011059719.4A CN202011059719A CN112247296B CN 112247296 B CN112247296 B CN 112247296B CN 202011059719 A CN202011059719 A CN 202011059719A CN 112247296 B CN112247296 B CN 112247296B
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- 238000003754 machining Methods 0.000 title claims abstract description 30
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 239000000956 alloy Substances 0.000 claims abstract description 24
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 24
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 16
- 238000005260 corrosion Methods 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 4
- 238000003487 electrochemical reaction Methods 0.000 claims description 4
- 239000008151 electrolyte solution Substances 0.000 claims description 4
- 238000003672 processing method Methods 0.000 claims description 4
- 230000036647 reaction Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000006056 electrooxidation reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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Classifications
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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
- B23H5/00—Combined machining
- B23H5/06—Electrochemical machining combined with mechanical working, e.g. grinding or honing
- B23H5/08—Electrolytic grinding
-
- 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
- B23H11/003—Mounting of workpieces, e.g. working-tables
-
- 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
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/38—Influencing metal working by using specially adapted means not directly involved in the removal of metal, e.g. ultrasonic waves, magnetic fields or laser irradiation
Abstract
The invention relates to a rotary ultrasonic composite trepanning electrochemical machining device and method. The device comprises a reference table, an insulating sealing clamp, a flaky alloy electrode, a grinding chamber sleeve, an array ultrasonic sheet and ceramic abrasive particles. In the processing process, the workpiece and the sheet alloy electrode are externally connected with a processing direct-current power supply, and meanwhile, an electrochemical solution flows in through an inlet of the insulating sealing clamp and flows through a gap between the workpiece and the sheet alloy electrode at a high speed, so that the workpiece is dissolved under the action of electrochemical corrosion. Array ultrasonic sheets are adhered to the outer wall of the grinding chamber sleeve and are arranged in the circumferential direction. The ultrasonic sheets are sequentially powered by the pulse distributor to generate alternate ultrasonic vibration in the circumferential direction. Ultrasonic vibrations are conducted into the electrochemical solution inside the grinding chamber sleeve causing the electrochemical solution to move rotationally about the workpiece. The ceramic abrasive particles form micro-motion grinding on the surface of the workpiece under the driving of the electrochemical solution in rotary motion, and the surface finishing effect is achieved.
Description
Technical Field
The invention relates to a rotary ultrasonic composite trepanning electrochemical machining device and method, and belongs to the technical field of special machining.
Background
The electrochemical machining mainly depends on the electrochemical solution mechanism of the metal anode to remove the workpiece material, and the technology has the advantages of no microcrack on the machined surface, no stress residue, high productivity, no tool loss and the like. In view of the above, electrolytic machining has become an indispensable technology in high-end manufacturing fields such as aviation and medical treatment.
Although the electrolytic machining has obvious advantages, stray corrosion inevitably exists in the machining process, the machining precision is influenced, and the application of the technology is limited. Aiming at the problem of stray corrosion, domestic researchers carry out a great deal of research and obtain certain effects.
The patent "a multi-potential electrolytic machining method" (application number CN 201410373682.0) adopts the multi-potential electrolytic machining method, and controls the stray corrosion of the electrolytic machining structure by restraining the electric field through the high potential of the insoluble auxiliary anode, but the insoluble auxiliary anode usually adopts metal platinum, which is high in cost.
In the patent "electrolytic machining cathode device for freezing protective sleeve material and machining method" (application number CN 201910202880.3), the freezing protection method is adopted to inhibit the carrier migration in the non-machining region and control the stray corrosion, but when the electrolyte freezes, the interference electrode moves and the machined part is damaged under collision.
Disclosure of Invention
Aiming at the technical problems, the invention provides a rotary ultrasonic composite trepanning electrochemical machining device and method, which remove micro-cracks caused by electrochemical machining stray corrosion by means of a rotary ultrasonic composite grinding method.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a rotary ultrasonic composite trepanning electrochemical machining device comprises:
the base is used for fixing a workpiece, and the annular groove is formed in the base and surrounds the periphery of the base;
the bottom end of the insulating sealing clamp is arranged in the annular groove of the reference table through an elastic prestress unit, and the upper end of the insulating sealing clamp extends towards the height direction of the workpiece;
the insulating sealing clamp is internally provided with step through holes which are respectively a lower through hole and an upper through hole, wherein,
the lower through hole is connected with the outer wall of the bottom of the workpiece in a sliding and sealing manner to serve as an installation positioning hole at the bottom of the workpiece;
the diameter of the upper through hole is larger than the outer diameter of the bottom of the workpiece, and a first annular gap is formed between the upper through hole and the outer wall of the bottom of the workpiece;
the left end and the right end of the insulating sealing clamp, which are opposite to the workpiece, are provided with channels for the flowing of the electrochemical solution, namely a liquid inlet channel and a liquid outlet channel;
the sheet alloy electrode is arranged at the top end of the insulating sealing clamp and is in sliding sealing connection with the insulating sealing clamp, and a second annular gap is formed between the sheet alloy electrode and the workpiece;
the grinding chamber sleeve is arranged above the sheet-shaped alloy electrode, a grinding cavity is arranged between the inner wall of the grinding chamber sleeve and the outer wall of the workpiece, and the liquid inlet channel, the first annular gap, the second annular gap, the grinding cavity and the liquid outlet channel are communicated;
the top of the grinding chamber sleeve is provided with a grinding material injection opening communicated with the grinding cavity;
the Z-axis linear motion platform is connected with the grinding chamber sleeve through an adapter plate, the position of the Z-axis linear motion platform is adjusted to enable the grinding chamber sleeve to be tightly attached to the upper surface of the sheet alloy electrode, and the grinding chamber sleeve is driven by the Z-axis linear motion platform to do linear motion;
array ultrasonic sheets are adhered to the outer wall of the grinding chamber sleeve and are circumferentially arranged on the outer wall of the grinding chamber sleeve;
and the pulse distributor controls the power-on time sequence of the array ultrasonic sheet.
The grinding material is a ceramic grinding material with the diameter range of 1.5 mm-2 mm.
The grinding chamber sleeve top end is provided with a flange, and the grinding materials are injected into the grinding chamber through the flange.
The elastic prestress unit is a spring.
The invention further discloses a processing method based on the rotary ultrasonic composite trepanning electrochemical machining device,
electrolyte solution flows into the insulating sealing clamp at a high speed through a liquid inlet channel, and a primary battery is formed between the workpiece and the sheet alloy electrode; meanwhile, the sheet alloy electrode and the workpiece are externally connected with a processing direct-current power supply, and the galvanic cell reaction of the two electrodes is converted into an electrochemical reaction, so that the dissolution speed of the workpiece material is increased;
an array ultrasonic sheet is adhered to the outer wall of the grinding chamber sleeve, the electrifying time sequence is controlled through a pulse distributor, and the array ultrasonic sheet generates circumferential alternating ultrasonic vibration;
conducting ultrasonic vibration into the electrochemical solution inside the grinding chamber sleeve so that the electrochemical solution rotates around the workpiece;
the abrasive forms micro-motion grinding on the surface of the workpiece under the driving of the electrochemical solution in rotary motion, eliminates surface micro-cracks caused by stray corrosion, improves the surface quality of parts and prolongs the fatigue life of the parts.
Has the advantages that:
the invention relates to a processing method based on a rotary ultrasonic composite trepanning electrochemical machining device.A electrolyte solution flows into a liquid inlet channel on an insulating sealing clamp at a high speed, and a primary battery is formed between a workpiece and a sheet alloy electrode; meanwhile, the sheet alloy electrode and the workpiece are externally connected with a processing direct-current power supply, and the galvanic cell reaction of the two electrodes is converted into an electrochemical reaction, so that the dissolution speed of the workpiece material is increased; an array ultrasonic sheet is adhered to the outer wall of the grinding chamber sleeve, the electrifying time sequence is controlled through a pulse distributor, and the array ultrasonic sheet generates circumferential alternating ultrasonic vibration; conducting ultrasonic vibration into the electrochemical solution inside the grinding chamber sleeve so that the electrochemical solution rotates around the workpiece; the abrasive forms micro-motion grinding on the surface of the workpiece under the driving of the electrochemical solution in rotary motion, eliminates surface micro-cracks caused by stray corrosion, improves the surface quality of parts and prolongs the fatigue life of the parts.
Drawings
FIG. 1 is a schematic structural view of a rotary ultrasonic composite trepanning electrochemical machining apparatus according to the present invention;
FIG. 2 is a schematic view of the electrochemical machining process for the rotary ultrasonic grinding of the composite trepanning of the present invention;
wherein: 1-workpiece, 2-insulating sealing fixture, 3-sheet alloy electrode, 4-grinding chamber sleeve, 5-reference table, 6-spring, 7-array ultrasonic sheet, 8-ceramic abrasive particle, 9-adapter plate, 10-Z axis linear motion platform, 11-flange and 12-pulse distributor.
Detailed Description
The following describes the specific implementation process of the present invention with reference to fig. 1 and 2:
a rotary ultrasonic composite trepanning electrochemical machining device comprises:
the reference table 5 is provided with a base for fixing a workpiece and an annular groove, and the annular groove is arranged around the periphery of the base;
the bottom end of the insulating sealing clamp 2 is arranged in the annular groove of the reference table through an elastic prestress unit, and the upper end of the insulating sealing clamp extends towards the height direction of the workpiece;
the insulating sealing clamp is internally provided with step through holes which are respectively a lower through hole and an upper through hole, wherein,
the lower through hole is connected with the outer wall of the bottom of the workpiece in a sliding and sealing manner to serve as an installation positioning hole at the bottom of the workpiece;
the diameter of the upper through hole is larger than the outer diameter of the bottom of the workpiece, and a first annular gap is formed between the upper through hole and the outer wall of the bottom of the workpiece;
the left end and the right end of the insulating sealing clamp, which are opposite to the workpiece, are provided with channels for the flowing of the electrochemical solution, namely a liquid inlet channel and a liquid outlet channel;
the sheet alloy electrode is arranged at the top end of the insulating sealing clamp and is in sliding sealing connection with the insulating sealing clamp, and a second annular gap is formed between the sheet alloy electrode and the workpiece;
the grinding chamber sleeve is arranged above the sheet-shaped alloy electrode, a grinding cavity is arranged between the inner wall of the grinding chamber sleeve and the outer wall of the workpiece, and the liquid inlet channel, the first annular gap, the second annular gap, the grinding cavity and the liquid outlet channel are communicated;
the top of the grinding chamber sleeve is provided with a grinding material injection opening communicated with the grinding cavity;
the Z-axis linear motion platform is connected with the grinding chamber sleeve through an adapter plate, the position of the Z-axis linear motion platform is adjusted to enable the grinding chamber sleeve to be tightly attached to the upper surface of the sheet alloy electrode, and the grinding chamber sleeve is driven by the Z-axis linear motion platform to do linear motion;
array ultrasonic sheets are adhered to the outer wall of the grinding chamber sleeve and are circumferentially arranged on the outer wall of the grinding chamber sleeve;
and the pulse distributor controls the power-on time sequence of the array ultrasonic sheet.
The grinding material is a ceramic grinding material with the diameter range of 1.5 mm-2 mm.
The grinding chamber sleeve top end is provided with a flange, and the grinding materials are injected into the grinding chamber through the flange.
The elastic prestress unit is a spring.
The invention further discloses a processing method based on the rotary ultrasonic composite trepanning electrochemical machining device,
electrolyte solution flows into the insulating sealing clamp at a high speed through a liquid inlet channel, and a primary battery is formed between the workpiece and the sheet alloy electrode; meanwhile, the sheet alloy electrode and the workpiece are externally connected with a processing direct-current power supply, and the galvanic cell reaction of the two electrodes is converted into an electrochemical reaction, so that the dissolution speed of the workpiece material is increased;
an array ultrasonic sheet is adhered to the outer wall of the grinding chamber sleeve, the electrifying time sequence is controlled through a pulse distributor, and the array ultrasonic sheet generates circumferential alternating ultrasonic vibration;
conducting ultrasonic vibration into the electrochemical solution inside the grinding chamber sleeve so that the electrochemical solution rotates around the workpiece;
the abrasive forms micro-motion grinding on the surface of the workpiece under the driving of the electrochemical solution in rotary motion, eliminates surface micro-cracks caused by stray corrosion, improves the surface quality of parts and prolongs the fatigue life of the parts.
Claims (5)
1. The utility model provides a compound jacking electrolytic machining device of rotation type supersound which characterized in that includes:
the base is used for fixing a workpiece, and the annular groove is formed in the base and surrounds the periphery of the base;
the bottom end of the insulating sealing clamp is arranged in the annular groove of the reference table through an elastic prestress unit, and the upper end of the insulating sealing clamp extends towards the height direction of the workpiece;
the insulating sealing clamp is internally provided with step through holes which are respectively a lower through hole and an upper through hole, wherein,
the lower through hole is connected with the outer wall of the bottom of the workpiece in a sliding and sealing manner to serve as an installation positioning hole at the bottom of the workpiece;
the diameter of the upper through hole is larger than the outer diameter of the bottom of the workpiece, and a first annular gap is formed between the upper through hole and the outer wall of the bottom of the workpiece;
the left end and the right end of the insulating sealing clamp, which are opposite to the workpiece, are provided with channels for the flowing of the electrochemical solution, namely a liquid inlet channel and a liquid outlet channel;
the sheet alloy electrode is arranged at the top end of the insulating sealing clamp and is in sliding sealing connection with the insulating sealing clamp, and a second annular gap is formed between the sheet alloy electrode and the workpiece;
the grinding chamber sleeve is arranged above the sheet-shaped alloy electrode, a grinding cavity is arranged between the inner wall of the grinding chamber sleeve and the outer wall of the workpiece, and the liquid inlet channel, the first annular gap, the second annular gap, the grinding cavity and the liquid outlet channel are communicated;
the top of the grinding chamber sleeve is provided with a grinding material injection opening communicated with the grinding cavity;
the Z-axis linear motion platform is connected with the grinding chamber sleeve through an adapter plate, the position of the Z-axis linear motion platform is adjusted to enable the grinding chamber sleeve to be tightly attached to the upper surface of the sheet alloy electrode, and the grinding chamber sleeve is driven by the Z-axis linear motion platform to do linear motion;
array ultrasonic sheets are adhered to the outer wall of the grinding chamber sleeve and are circumferentially arranged on the outer wall of the grinding chamber sleeve;
and the pulse distributor controls the power-on time sequence of the array ultrasonic sheet.
2. The rotary ultrasonic composite trepanning electrochemical machining apparatus of claim 1,
the grinding material is a ceramic grinding material with the diameter range of 1.5 mm-2 mm.
3. The rotary ultrasonic composite trepanning electrochemical machining apparatus of claim 1,
the grinding chamber sleeve top end is provided with a flange, and the grinding materials are injected into the grinding chamber through the flange.
4. The rotary ultrasonic composite trepanning electrochemical machining apparatus of claim 1, wherein the elastic pre-stressing unit is a spring.
5. A processing method based on the rotary ultrasonic composite trepanning electrochemical machining device as claimed in any one of claims 1-4, is characterized in that:
electrolyte solution flows into the insulating sealing clamp at a high speed through a liquid inlet channel, and a primary battery is formed between the workpiece and the sheet alloy electrode; meanwhile, the sheet alloy electrode and the workpiece are externally connected with a processing direct-current power supply, and the galvanic cell reaction of the two electrodes is converted into an electrochemical reaction, so that the dissolution speed of the workpiece material is increased;
an array ultrasonic sheet is adhered to the outer wall of the grinding chamber sleeve, the electrifying time sequence is controlled through a pulse distributor, and the array ultrasonic sheet generates circumferential alternating ultrasonic vibration;
conducting ultrasonic vibration into the electrochemical solution inside the grinding chamber sleeve so that the electrochemical solution rotates around the workpiece;
the abrasive forms micro-motion grinding on the surface of the workpiece under the driving of the electrochemical solution in rotary motion, eliminates surface micro-cracks caused by stray corrosion, improves the surface quality of parts and prolongs the fatigue life of the parts.
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2020
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008194808A (en) * | 2007-02-13 | 2008-08-28 | Kumakura:Kk | Machining table with ultrasonic wave exciting solution tank |
| CN201223981Y (en) * | 2008-06-24 | 2009-04-22 | 广东工业大学 | Embedding slice type composite tool and electrochemical mechanical composite processing device |
| CN102909446A (en) * | 2012-11-01 | 2013-02-06 | 东北林业大学 | Device for removing internally crossed tidy hole burrs by compositing electrolyte and micro-fine grinded powder |
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Effective date of registration: 20231016 Address after: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd. Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee before: Dragon totem Technology (Hefei) Co.,Ltd. Effective date of registration: 20231016 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Address before: 223003 Jiangsu Huaian economic and Technological Development Zone, 1 East Road. Patentee before: HUAIYIN INSTITUTE OF TECHNOLOGY |