CN2850793Y - Cathode device suitable for high-speed ELID grinding - Google Patents
Cathode device suitable for high-speed ELID grinding Download PDFInfo
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- CN2850793Y CN2850793Y CN 200520052846 CN200520052846U CN2850793Y CN 2850793 Y CN2850793 Y CN 2850793Y CN 200520052846 CN200520052846 CN 200520052846 CN 200520052846 U CN200520052846 U CN 200520052846U CN 2850793 Y CN2850793 Y CN 2850793Y
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Abstract
The utility model relates to a cathode device suitable for high-speed online electrolyte sharpening and grinding, which is provided with a cathode cavity body 4 with a binding post 3 and the top of the cathode cavity body is provided with an insulation cover plate 2. The upper part of the cathode cavity body is provided with an electrolyte filling opening 1, and a circular arc part at the lower part of the cathode cavity body has three bar-shaped square holes 9. The cathode device is composed of the circular arc part and two baffle plates 5, 10, wherein the baffle plates 5, 10 are respectively fixed and installed on corresponding front and back sides of the cathode cavity body 4 and the bottom of the cathode device is provided with an opening. The opening of the bottom of the cathode cavity body is provided with a flexible covering chip 8 with a corresponding opening groove 11, and both sides of the opening are respectively provided with a press plate 6. The width of the opening groove 11 of the flexible covering chip 8 is the same as the width of a sharpened grinding wheel or a little bit smaller than the width of the sharpened grinding wheel is better, and the distance between two press plates 6 is wider than the width of the opening groove 11. The utility model realizes high-speed online electrolyte sharpening and grinding effectively, the surface of a grinding wheel forms a compact and continuous oxide film, the quality of grinding surface of a work piece is improved and the grinding force is reduced.
Description
Technical field
The utility model relates to a kind of cathode assembly that is applicable to high speed on line electrolysis grinding.
Background technology
In the high efficient grinding and accurate grinding of hard crisp difficult-to-machine material, the metallic bond superabrasive wheel is being played the part of important role.But the self-sharpening of metal bindnig agent extra hard abradant sand wheel is poor, stop up easily, easily produce the exciting force that is caused by emery wheel off-centre in grinding, thereby influence the stability and the grinding surface quality of grinding process, for this reason, need regularly carry out dressing to emery wheel.Because its hard bond has brought great difficulty for the dressing of emery wheel, there are long, characteristics such as difficulty is big, efficient is low of dressing time.Big gloomy whole proposition ELID (the Electrolytic In-process Dressing of scholar from Japanese physics and chemistry research institute, i.e. " online electrolysis ") since the notion of grinding, because its efficient height, precision height, surface quality are good, processing unit (plant) simply reaches characteristics such as flexibility (adaptability) of operation is wide, be widely used in the precision and the ultraprecise processing of hard brittle materials such as carbide alloy, engineering ceramics, optical glass, hardened steel and semiconductor.Yet, recent report shows that the continuity of ELID grinding and high efficiency only can realize, when wheel face speed surpasses 20m/s under the low speed grinding of 20m/s, dressing efficient and effect sharply descend, and point out that this is because under-supply the causing of electrolyte in dressing district.Cause the reason of feed flow deficiency to be: when emery wheel rotated at a high speed, forming one deck pressure-air boundary-layer on its surface was airflow field, and this makes electrolyte be difficult to enter the dressing district effectively, thereby causes the feed flow deficiency.
The utility model content
The technical problems to be solved in the utility model is, defective at the prior art existence, a kind of cathode assembly that is applicable to high speed on line electrolysis grinding is proposed, it not only can completely cut off the High Speed Airflow Within of wheel face, and can make electrolyte be full of its closed area and guarantee the in liberal supply of electrolyte, effectively realize high speed on line electrolysis (ELID) grinding thus.
Technical solution of the present utility model is, the described cathode assembly of high speed on line electrolysis grinding that is applicable to has band binding post and top that the negative electrode cavity of insulation cover plate is housed, its design feature is, one electrolyte inlet is arranged at the top of described negative electrode cavity, the circular arc shaped portion of bottom is three slice shape square holes of distribution evenly, this circular arc portion be fixedly mounted on the negative electrode cavity respectively before, it is uncovered cathode assembly that two baffle plates of the correspondence of back both sides are formed a bottom, and uncovered flexible matte and its both sides that band respective openings groove is housed of described negative electrode cavity bottom are equipped with pressing plate respectively.
Below the utility model made further specify.
Referring to Fig. 1, the utility model has band binding post 3 and top that the negative electrode cavity 4 of insulation cover plate 2 is housed, its design feature is, one electrolyte inlet 1 is arranged at the top of described negative electrode cavity, the bottom circular arc shaped portion is three slice shape square holes 9 of distribution evenly, it is uncovered cathode assembly that this circular arc shaped portion is formed a bottom with corresponding two baffle plates 5,10 that are fixedly mounted on negative electrode cavity 4 forward and backward both sides respectively, and uncovered flexible matte 8 and its both sides that band respective openings groove 11 is housed of described negative electrode cavity bottom are equipped with pressing plate 6 respectively.The width of the open slot 11 of described flexible matte 8 with identical or smaller being advisable by the width of dressing emery wheel, and the distance between two pressing plates 6 slightly is wider than the width of open slot 11.
Know-why of the present utility model is (referring to Fig. 1 and Fig. 2), the dressing location of emery wheel is in the circular arc shaped portion of negative electrode cavity during use, promptly by forming a closed area between negative electrode cavity 4, front and rear baffle 5,10, flexible matte 8 and the emery wheel 7, this structure has not only completely cut off the High Speed Airflow Within on emery wheel 7 surfaces, and can make electrolyte be full of this closed area; Because the central feed liquid way that adopts described structure to realize can guarantee electrolyte and effectively inject electrolysis zone and feed flow abundance.
The utility model cathode assembly uses on the high-speed grinding testing stand of the 150m/s of Hunan University country high efficient grinding Engineering Technical Research Centre, and the ground effect of itself and plain grinding is contrasted.
(1) experimental rig of high speed ELID grinding and common high-speed grinding:
1. power supply: high frequency direct current pulse power source, voltage are 60V, 90V, 120V third gear, peak inrush current 20A, and high level 1-100 μ s, low level 1-100 μ s, pressure limiting resistance are 18 Ω;
2. electrolyte: the special-purpose grinding fluid of self-control ELID;
3. closed brass cathod system;
4. carbon-point brush-system;
5. emery wheel: diameter is 200mm, and granularity is the bronze binding agent skive of 100#/120#;
6. emery wheel dressing mode: electric spark-mechanical compound shaping method.
(2) material for test:
This contrast test is selected for use and is widely used and silicon nitride and yittrium oxide PSZ that mechanical property and chemical property differ greatly are material for test.These two kinds of materials provide by Shanghai silicate research institute, and its specification is respectively: 50 * 15 * 10mm
3With 50 * 15 * 10mm
3
(3), the grinding parameter of high speed ELID grinding and common high-speed grinding such as following table:
| Grinding speed V S(m/s) | Workpiece feed speed V W(m/min ) | Grinding depth (mm) |
| 30，45， 60 | 4，6，9 | 0.1，0.2， 0.3， 0.4，0.5， 0.6 |
(4), the result of contrast test:
1. under identical grinding condition, the grinding force of high speed ELID grinding has reduced 30% with comparing of common high-speed grinding;
2. under identical grinding condition, high speed ELID grinding institute grinder part surface roughness has reduced 20% with comparing of common high-speed grinding.
3. when obtaining identical grinding force and surface roughness, the material removal rate that high speed ELID grinding is reached has increased 20% with comparing of common high-speed grinding;
As known from the above, the utility model is a kind of cathode assembly that is applicable to high speed on line electrolysis grinding, and it has effectively realized high speed on line electrolysis (ELID) grinding, has formed fine and close continuous oxide-film at wheel face, improve the workpiece grinding surface quality, reduced grinding force.
Description of drawings
Fig. 1 is the structural representation that a kind of embodiment associated components of the utility model is a released state;
Fig. 2 is that overall structure reaches the user mode schematic diagram to the emery wheel dressing.
In the drawings:
1-electrolyte inlet, the 2-insulation cover plate, the 3-binding post,
4-negative electrode cavity, 5, the 10-baffle plate, the 6-pressing plate,
The 7-emery wheel, the flexible matte of 8-, 9-bar shaped square hole,
The 11-open slot.
The specific embodiment
The utility model cathode assembly according to Fig. 1, Fig. 2 and said structure, cathode 4 usefulness brass are made, its dressing zone length (negative electrode cavity) accounts for 1/3rd of emery wheel girth, and described electrolyte outlet is three axial bar holes that are evenly distributed on described circular arc portion.
The utility model cathode assembly moves on the high-speed grinding testing stand of the 150m/s of country of Hunan University high efficient grinding Engineering Technical Research Centre.
(1) high speed ELID grinding test device:
1. power supply: high frequency direct current pulse power source, voltage are 60V, 90V, 120V third gear, peak inrush current 20A, and high level 1-100 μ s, low level 1-100 μ s, pressure limiting resistance are 18 Ω;
2. electrolyte: the special-purpose grinding fluid of self-control ELID;
3. closed brass cathod system;
4. carbon-point brush-system;
5. emery wheel: diameter is 200mm, and granularity is the bronze binding agent skive of 100#/120#;
6. emery wheel dressing mode: electric spark-mechanical compound shaping method.
(2) material for test: select for use to be widely used and silicon nitride and yittrium oxide PSZ that mechanical property and chemical property differ greatly are material for test.These two kinds of materials provide by Shanghai silicate research institute, and its specification is respectively: 50 * 15 * 10mm
3With 50 * 15 * 10mm
3
(3) grinding parameter:
Grinding speed V
S(m/s): 30,45,60;
Workpiece feed speed V
W(m/min): 4,6,9;
Grinding depth (mm): 0.1,0.2,0.3,0.4,0.5,0.6.
Claims (2)
1, a kind of cathode assembly that is applicable to high speed on line electrolysis grinding, there are band binding post (3) and top that the negative electrode cavity (4) of insulation cover plate (2) is housed, it is characterized in that, one electrolyte inlet (1) is arranged at the top of described negative electrode cavity (4), the bottom circular arc shaped portion is distribution three slice shape square holes (9) evenly, this circular arc shaped portion is with to be fixedly mounted on negative electrode cavity (4) respectively preceding, two baffle plates (5 of the correspondence of back both sides, 10) forming a bottom is uncovered cathode assembly, and uncovered flexible matte (8) and its both sides that band respective openings groove (11) is housed of described negative electrode cavity bottom are equipped with pressing plate (6) respectively.
According to the described cathode assembly that is applicable to high speed on line electrolysis grinding of claim 1, it is characterized in that 2, described three slice shape square holes (9) axial distribution is on described circular arc shaped portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520052846 CN2850793Y (en) | 2005-12-21 | 2005-12-21 | Cathode device suitable for high-speed ELID grinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520052846 CN2850793Y (en) | 2005-12-21 | 2005-12-21 | Cathode device suitable for high-speed ELID grinding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2850793Y true CN2850793Y (en) | 2006-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520052846 Expired - Fee Related CN2850793Y (en) | 2005-12-21 | 2005-12-21 | Cathode device suitable for high-speed ELID grinding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2850793Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115235A (en) * | 2018-01-31 | 2018-06-05 | 西安工业大学 | A kind of tool cathode for metal material electrolysis shaping |
| CN108296580A (en) * | 2018-01-31 | 2018-07-20 | 西安工业大学 | A kind of V shaped slab formula tool cathode |
-
2005
- 2005-12-21 CN CN 200520052846 patent/CN2850793Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108115235A (en) * | 2018-01-31 | 2018-06-05 | 西安工业大学 | A kind of tool cathode for metal material electrolysis shaping |
| CN108296580A (en) * | 2018-01-31 | 2018-07-20 | 西安工业大学 | A kind of V shaped slab formula tool cathode |
| CN108115235B (en) * | 2018-01-31 | 2019-05-07 | 西安工业大学 | A kind of tool cathode for metal material electrolysis shaping |
| CN108296580B (en) * | 2018-01-31 | 2019-07-09 | 西安工业大学 | A kind of V shaped slab formula tool cathode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061227 Termination date: 20121221 |