CN211219028U - Plane grinding and electrolytic combined machining device and system thereof - Google Patents
Plane grinding and electrolytic combined machining device and system thereof Download PDFInfo
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- CN211219028U CN211219028U CN201921578484.2U CN201921578484U CN211219028U CN 211219028 U CN211219028 U CN 211219028U CN 201921578484 U CN201921578484 U CN 201921578484U CN 211219028 U CN211219028 U CN 211219028U
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Abstract
A plane grinding and electrolytic combined machining device and a system thereof belong to the field of grinding and electrolytic combined machining. The plane grinding and electrolysis combined machining device comprises a grinding body, a power supply cathode can be connected to the grinding body to serve as an electrolysis machining cathode, and a penetrating liquid through hole is formed in the grinding body and used for introducing electrolyte; the grinding blocks are arranged at the end part of the grinding body at intervals to form a grinding area, the exposed area between every two adjacent grinding blocks forms an electrolysis action area, and electrolyte can flow out from the electrolysis action area. The utility model discloses a grinding body that takes central liquid through hole carries out grinding and electrolysis combined machining to the work piece, can satisfy the requirement to high strength high rigidity material processing, can satisfy the requirement that improves the machining precision and reduce work piece roughness again.
Description
Technical Field
The utility model relates to the field of grinding and electrolytic combined machining; in particular to a plane grinding and electrolysis combined processing device and a system thereof.
Background
In order to pursue excellent performance, high-strength, high-hardness and difficult-to-machine materials (titanium alloy, high-temperature alloy, high-strength stainless steel, and the like) are increasingly applied to a plane, resulting in the problems of low machining efficiency, rapid tool wear, high grinding cost, and the like. The grinding machining has small cutting depth, can obtain higher machining precision and small surface roughness, but has lower efficiency and aggravated abrasion when grinding high-hardness materials. The electrochemical machining has the advantages of no tool loss, no residual stress, no limitation of material hardness, no actual contact between a tool cathode and a workpiece and the like, has certain advantages on the removal machining of high-strength and high-hardness materials, but simultaneously the electrochemical machining is easy to form a passivation layer on the surface of the workpiece to hinder the continuation of electrochemical reaction, and the machining precision is difficult to guarantee.
In view of this, a single machining method has become increasingly unable to meet the needs of practical engineering.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a combined machining apparatus and system for surface grinding and electrolytic machining, which is aimed at least partially solving at least one of the above-mentioned technical problems.
As an aspect of the utility model, a plane grinding and electrolysis combined machining device is provided, include:
the grinding body can be connected with a power supply cathode to serve as an electrolytic machining cathode, and a through liquid through hole is formed in the grinding body and used for introducing electrolyte;
the grinding blocks are arranged at the end part of the grinding body at intervals to form a grinding area, the exposed area between every two adjacent grinding blocks forms an electrolysis action area, and electrolyte can flow out from the electrolysis action area.
As another aspect of the present invention, there is also provided a surface grinding and electrolytic combined machining system, including:
the plane grinding and electrolysis combined processing device;
a workpiece having electrical conductivity;
the power supply is used for respectively connecting the negative electrode of the power supply with the conductive area through a lead and connecting the positive electrode of the power supply with the workpiece; and the number of the first and second groups,
and the electrolyte flows out of the electrolysis action area through the electrolyte through hole, and an electrolytic cell is formed between the electrolysis action area and the workpiece and is used for carrying out electrolytic machining on the workpiece.
According to the technical scheme, the plane grinding and electrolysis combined machining device and the system thereof have at least one or one part of the following beneficial effects:
(1) the grinding body with the liquid through hole is adopted to grind and electrolytically compound process the workpiece, so that the requirements on processing high-strength and high-hardness materials can be met, and the requirements on improving the processing precision and reducing the surface roughness of the workpiece can be met;
(2) the grinding and electrolysis effects can be switched by adjusting the voltage, so that the plane of the difficult-to-machine material can be machined efficiently, precisely and at low cost;
(3) the two processing modes complement each other and promote each other.
Drawings
FIG. 1 is a schematic view of a plane grinding and electrolytic combined machining apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic front view of a grinding body according to an embodiment of the present invention;
FIG. 3 is a schematic bottom view of the grinding body according to the embodiment of the present invention;
FIG. 4 is a sectional view taken along line A-A;
FIG. 5 is an enlarged view of portion A of FIG. 4;
fig. 6 is an enlarged view of a portion B of fig. 4.
In the above drawings, the reference numerals have the following meanings:
1. electrolyte and flow direction, 2, a central liquid through hole, 3, an insulating layer, 4, an electrolysis action area, 5, a cup-shaped grinding wheel, 6, a grinding wheel block, 7, an electrolyte flow line, 8, a workpiece to be processed, 9, a power supply cathode and 10, a power supply anode.
Detailed Description
The grinding machining has small cutting depth, can obtain higher machining precision and small surface roughness, but has lower efficiency and aggravated abrasion when grinding high-hardness materials. The electrochemical machining has the advantages of no tool loss, no residual stress, no limitation of material hardness, no actual contact between a tool cathode and a workpiece and the like, has certain advantages for removing high-strength and high-hardness materials, but simultaneously, the electrochemical machining is easy to form a passivation layer on the surface of the workpiece to block the continuous proceeding of electrochemical reaction, and the machining precision is difficult to guarantee. From this, single processing mode has more and more can not satisfy the needs of actual engineering, in order to pursue high efficiency, low cost, the utility model discloses combined the advantage of high rigidity diamond grinding and electrolytic machining, adopted the grinding body that passes through the liquid hole to carry out grinding and electrolysis combined machining to the work piece, can switch grinding and electrolysis effect's efficiency size through regulating voltage's size, realize the processing of difficult processing material plane high efficiency, high accuracy, low cost.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
A combined surface grinding and electrolytic machining apparatus comprising:
the grinding body can be connected with a power supply cathode to serve as an electrolytic machining cathode, and a through liquid through hole is formed in the grinding body and used for introducing electrolyte;
the grinding blocks are arranged at the end part of the grinding body at intervals to form a grinding area, an exposed area between every two adjacent grinding blocks forms an electrolysis action area, and electrolyte can flow out of the electrolysis action area;
the electrolyte generates electrolytic reaction when flowing through the electrolytic action area, so that a passivation layer is generated on the surface of the workpiece connected with the positive electrode of the power supply, and the grinding block also has the function of removing the passivation layer while processing the surface of the workpiece through the grinding action of the grinding body.
In the embodiment, in the initial stage of machining, the power supply voltage can be increased, the advantage of hardness limitation of the electrochemical machining immature material is fully exerted, the function of removing the material by electrolysis is increased, and the grinding block is only used for scraping the passivation layer generated by the electrochemical machining. With the continuous processing, the power supply voltage can be gradually reduced, the effect of removing materials through electrolysis is reduced, and the grinding effect of the grinding block is increased. The grinding and electrolytic combined machining can effectively improve the machining efficiency of the plane of the material difficult to machine, reduce the abrasion of the grinding wheel, prolong the service life of the grinding wheel and realize the machining of the surface with high precision and high quality.
In various embodiments, the device is applied to, but not limited to, high-strength and high-hardness materials such as titanium alloy, high-temperature alloy, hard alloy and the like, and has a planar structure. The plane of the material difficult to machine is processed efficiently, precisely and at low cost.
Further, the other end of the grinding body, which is far away from the electrolysis action area, is a conductive area and is used for connecting a power supply cathode;
preferably, the grinding body is formed in a diameter-variable cylindrical shape, and the inner diameter of the end portion close to the electrolysis region is larger than that of the end portion close to the conductive region, so as to increase the working area of the machining.
Furthermore, the grinding body is made of brass, and the outer wall and the inner wall of the grinding body except the conductive area and the electrolysis action area are coated with insulating layers.
Further, the grinding action of the grinding body is taken as a rotating action, in the embodiment, the grinding body is driven by the hollow electric spindle to rotate, and the electrolyte can flow into the central liquid through hole of the grinding body through the hollow electric spindle and reaches the electrolysis action area; but is not limited thereto.
Furthermore, the grinding block is made of a diamond grinding wheel and is embedded in the end part of the grinding body.
Furthermore, the height of the grinding block protruding out of the electrolysis action area is 0.2-1 mm.
In this embodiment, there is also provided a combined machining system for surface grinding and electrolytic machining, including:
the above-mentioned plane grinding and electrolytic combined processing device;
a workpiece having electrical conductivity;
the power supply is used for respectively connecting the negative electrode of the power supply with the conductive area through a lead and connecting the positive electrode of the power supply with the workpiece; and the number of the first and second groups,
and the electrolyte flows out of the electrolysis action area through the electrolyte through hole, and an electrolytic cell is formed between the electrolysis action area and the workpiece and is used for carrying out electrolytic machining on the workpiece.
In the embodiment, a plane grinding and electrolytic combined machining method is further provided, and the workpiece is ground and electrolytically combined machined by using the plane grinding and electrolytic combined machining device.
Further, in the grinding and electrolytic combined machining process, the relative strength of the grinding action and the electrolytic action is switched by adjusting the power supply voltage;
preferably, the power supply voltage is adjusted within a range of 10-35V.
In different embodiments, the magnitude of the processing voltage can be flexibly adjusted according to different requirements of processing efficiency, surface quality, service life of a grinding block and the like, so that the efficacy of grinding and electrolysis can be switched. When the requirement on the processing efficiency or the service life of the grinding block is higher, the voltage can be increased, the electrochemical machining effect is increased, more materials are removed by electrochemical corrosion, and the grinding block only scrapes the passivation layer, so that the grinding block is slower in abrasion; when the residual stress of the machined surface is expected to be smaller, the voltage can be increased, the advantage of no residual stress in electrolytic machining is played, the function of removing materials by electrolysis is increased, and the residual stress generated by grinding mechanical force is reduced; when the requirements on surface roughness and flatness are high, the voltage can be reduced, the electrolytic machining effect is reduced, and grinding of the grinding block is mainly used.
The technical solution of the present invention will be further explained by the following specific examples.
Example 1
As shown in fig. 1, which is a schematic diagram of a plane grinding and electrolytic combined machining system, a cup-shaped grinding wheel 5 (i.e., a grinding body) is connected with a power supply cathode 9 as an electrolytic machining cathode, and a workpiece 8 to be machined (i.e., a workpiece) is connected with a power supply anode 10 as an electrolytic machining anode; meanwhile, a diamond grinding wheel block 6 (namely a grinding block) is embedded at the lower part of the cup-shaped grinding wheel 5, and plane grinding can be carried out.
The cup-shaped grinding wheel 5 and a workpiece 8 to be machined form a cavity, but because the grinding wheel block 6 embedded at the bottom of the cup-shaped grinding wheel 5 is higher than the electrolysis action area 4, a gap is generated at the lower part of the electrolysis action area 4, most of electrolyte can flow out of the gap, and passes through the electrolysis machining area at high speed to provide an electrolysis machining medium; a small part of electrolyte flows out from a tiny gap between the grinding wheel block 6 and the workpiece 8 to be processed, and the electrolyte can serve as cooling liquid and remove tiny abrasive dust.
Referring to fig. 2, a schematic front view of a grinding body, fig. 3, a sectional view of the grinding body, fig. 4A-a, and fig. 5 and 6, which are partially enlarged, a cup-shaped grinding wheel 5 is made of brass, an insulating layer 3 is coated on the upper and bottom electrolytic action regions 4 of a grinding wheel rod, and a central liquid through hole 2 is formed in the center of the cup-shaped grinding wheel 5 to supply electrolyte during machining. The bottom of the cup-shaped grinding wheel 5 is embedded with a diamond grinding wheel block 6 in a split way, and the electrolysis action area 4 is exposed. During the process of high-speed rotation of the cup-shaped grinding wheel 5, electrolytic machining of the electrolyte action area 4 and grinding machining of the grinding wheel block 6 alternately act on the surface of the workpiece.
The grinding wheel block 6 embedded at the bottom of the cup-shaped grinding wheel 5 is higher than the electrolysis action area 4, so that a gap is formed at the lower part of the electrolysis action area 4, most of electrolyte can flow out of the gap and passes through the electrolysis processing area at a high speed to provide an electrolysis processing medium.
The selective range of the electrolytic machining voltage is as follows: 10-35V, and the height h of the grinding wheel block 6 can be selected within the range of 0.2-1 mm.
The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A plane grinding and electrolysis combined machining device is characterized by comprising:
the grinding body is internally provided with a through liquid through hole for introducing electrolyte;
the grinding blocks are arranged at the end part of the grinding body at intervals to form a grinding area, an exposed area between every two adjacent grinding blocks forms an electrolysis action area, and electrolyte can flow out of the electrolysis action area;
and the other end of the grinding body, which is far away from the electrolysis action area, is a conductive area and is used for connecting a power supply negative electrode to be used as an electrolytic machining cathode.
2. The combined surface grinding and electrolytic machining device according to claim 1, wherein the grinding body is formed in a variable-diameter cylindrical shape, and an inner diameter of an end portion close to the electrolytic action region is larger than an inner diameter of an end portion close to the conductive region for increasing an action area of machining.
3. The combined flat grinding and electrolytic machining device according to claim 1, wherein the grinding body is made of brass, and the outer wall and the inner wall of the grinding body except the conductive area and the electrolytic action area are coated with an insulating layer.
4. The combined flat grinding and electrolytic machining device according to claim 1, wherein the grinding action of the grinding body is a rotational action.
5. The combined flat grinding and electrolytic machining device according to claim 4, wherein the grinding body is rotated by a hollow electric spindle.
6. The combined flat grinding and electrolytic machining device according to claim 1, wherein the grinding block is made of a diamond grinding wheel and is embedded in the end portion of the grinding body.
7. The combined flat grinding and electrolytic machining device according to claim 1, wherein the height of the grinding block protruding from the electrolytic action area is 0.2 to 1 mm.
8. A combined face grinding and electrolytic machining system, comprising:
the combined flat grinding and electrolytic machining apparatus according to any one of claims 1 to 7;
a workpiece having electrical conductivity;
the power supply is used for respectively connecting the negative electrode of the power supply with the conductive area through a lead and connecting the positive electrode of the power supply with the workpiece; and the number of the first and second groups,
and the electrolyte flows out of the electrolysis action area through the electrolyte through hole, and an electrolytic cell is formed between the electrolysis action area and the workpiece and is used for carrying out electrolytic machining on the workpiece.
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| CN201921578484.2U CN211219028U (en) | 2019-09-20 | 2019-09-20 | Plane grinding and electrolytic combined machining device and system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112658416A (en) * | 2020-11-25 | 2021-04-16 | 南京航空航天大学 | Large-plane efficient precise electrolytic mechanical composite machining tool and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658416A (en) * | 2020-11-25 | 2021-04-16 | 南京航空航天大学 | Large-plane efficient precise electrolytic mechanical composite machining tool and method |
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