CN212070692U - Simple micro electric spark/electrolytic machining spindle - Google Patents
Simple micro electric spark/electrolytic machining spindle Download PDFInfo
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- CN212070692U CN212070692U CN202020393112.9U CN202020393112U CN212070692U CN 212070692 U CN212070692 U CN 212070692U CN 202020393112 U CN202020393112 U CN 202020393112U CN 212070692 U CN212070692 U CN 212070692U
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- tool electrode
- conductive
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- main shaft
- electric
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- 238000003754 machining Methods 0.000 title claims abstract description 58
- 238000010892 electric spark Methods 0.000 title claims abstract description 31
- 230000005611 electricity Effects 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 27
- 229910052799 carbon Inorganic materials 0.000 claims description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 238000005868 electrolysis reaction Methods 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000010146 3D printing Methods 0.000 claims description 4
- 239000007770 graphite material Substances 0.000 claims description 4
- 238000003892 spreading Methods 0.000 claims description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000007639 printing Methods 0.000 abstract description 2
- 229920000747 poly(lactic acid) Polymers 0.000 description 6
- 239000004626 polylactic acid Substances 0.000 description 6
- 238000005459 micromachining Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000009760 electrical discharge machining Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 241000761557 Lamina Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The utility model discloses a simple and easy fine electric spark electrolytic machining main shaft. The micro electric spark/electrolytic machining spindle takes a BM320F electric spindle produced by NSK as a power source, can realize continuous adjustment at 1000-; the electricity leading supporting piece is printed by insulating PLA materials in a 3D mode, so that the integrated printing and forming of a complex structure can be realized, and the integral simplicity and the compact structure of the main shaft are ensured; the power transmission device adopts an integrated insulating sleeve structure, realizes the assembly with the electric spindle and the tool electrode respectively, and realizes the effective insulation with the electric spindle under the condition of ensuring high transmission precision.
Description
Technical Field
The utility model relates to a fine special type processing technology field especially relates to a simple and easy fine electric spark electrolytic machining main shaft.
Background
Micro Electrical Discharge Machining (EDM), also known as Electrical Discharge Machining or electroerosion Machining, is a process in which pulsed spark Discharge is generated between a tool and a workpiece, and the metal material is eroded by the instantaneous, local high temperature generated during the Discharge; during the machining process, the tool does not contact the workpiece. The technology is widely applied to the micro-machining of hard and difficult-to-machine materials such as hard alloy, die steel, quenched steel, polycrystalline diamond and the like, and can also be used for the micro-machining of workpieces with low rigidity and complex surface shapes.
Micro electrochemical machining (electrochemical machining) refers to a machining method for obtaining a high-precision and small-size part by applying electrochemical machining within a micro machining range (1 μm to 1mm), and is widely applied to precision ultra-precision micro machining of special-shaped parts such as cylindrical parts, spline holes, internal gears, molds, valve plates and the like.
The implementation basis of the micro electric discharge machining and the micro electrolytic machining is the corresponding micro electric discharge machine tool and the corresponding micro electrolytic machine tool, and the key core component of the micro electric discharge machining and the micro electrolytic machine tool is the corresponding main shaft. The functions of the micro electric discharge machining main shaft and the micro electrolytic machining main shaft which need to be realized have the following common points: firstly, the main shaft needs to rotate with high precision, and secondly, a micro electric spark power supply or a micro electrolysis power supply needs to be introduced to a micro tool. At present, the common application in micro electric discharge machining and micro electrolytic machining is a V-block spindle driven by a motor, and although the V-block spindle can realize rotation with relatively high precision, the following problems also exist: firstly, the adjustable range of the rotating speed of a main shaft driven by a motor is limited, the rotating speed is not high, generally 0-5000r/min, and the wide adjustable range and high-speed rotating processing are difficult to realize; secondly, the processing device is relatively complex and the structure is not very compact; thirdly, the main shaft and the machine tool body cannot be well insulated electrically, and the processing efficiency and the processing quality are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a simple and easy fine electric spark electrolytic machining main shaft to solve traditional V piece main shaft rotational speed adjustable range limited, the device is complicated, the structure is not compact, and can't realize good electrically insulated problem between the lathe body.
In order to achieve the above object, the utility model provides a following scheme:
a simple micro-electro-discharge/electrolytic machining spindle comprising: the power source module, the power transmission module and the electricity leading module;
the power source module is a BM320F electric main shaft produced by NSK of Japan; the power transmission module is an integrated insulating sleeve; the top of the integrated insulating sleeve is provided with a thin shaft, and the bottom of the integrated insulating sleeve is provided with a stainless steel bolt hole; the electricity leading module comprises an electricity leading support piece, a screwing spreading bolt, a screwing spreading nut, a tool electrode chuck, a tool electrode, a carbon brush, a conductive bolt, a conductive spring and a conductive copper sheet;
the two wing plates at the top of the electricity leading support piece are arranged on the shaft body of the BM320F electric main shaft through the screwing distraction bolt and the screwing distraction nut; the integrated insulating sleeve is coupled with a main shaft of the BM320F electric main shaft through the thin shaft at the top; the tool electrode chuck is screwed into the stainless steel bolt hole at the bottom of the integrated insulating sleeve through the top thread of the tool electrode chuck; the tool electrode clamp is arranged at the bottom of the tool electrode chuck; the bottom of the electricity leading supporting piece is provided with a through hole; the conductive bolt, the conductive copper sheet, the conductive spring and the carbon brush are sequentially arranged in the through hole; the head part of the carbon brush is contacted with the tool electrode, and the tail part of the carbon brush is connected with one end of the conductive spring; the other end of the conductive spring is connected with one side of the conductive copper sheet; the head of the conductive bolt is pressed against the other side of the conductive copper sheet, and the tail of the conductive bolt is connected with one pole of an electric spark power supply or an electrolysis power supply.
Optionally, the rotating speed range of the electric spindle of the BM320F is 1000-.
Optionally, the diameter of the thin shaft at the top of the integrated insulation sleeve is 3.175 mm.
Optionally, the tool electrode chuck is a hardened and tempered steel countersunk head taper bolt.
Optionally, the tool electrode is a cylindrical rod of tungsten carbide with a diameter of 1 mm.
Optionally, the carbon brush is made of a graphite material; the electricity leading supporting piece is made of PLA materials through 3D printing.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
the utility model provides a simple and easy fine electric spark/electrolytic machining main shaft, this main shaft uses BM320F electric main shaft of NSK production as the power supply, can realize 1000 supplyes 80000r/min continuously adjustable under high gyration precision, realize that fine electric spark/electrolysis adjustable range is wide, the rotary machining of higher speed; the electricity leading supporting piece is printed by insulating PLA materials in a 3D mode, so that the integrated printing and forming of a complex structure can be realized, and the integral simplicity and the compact structure of the main shaft are ensured; the power transmission device adopts an integrated insulating sleeve structure, realizes the assembly with the electric spindle and the tool electrode respectively, and realizes the effective insulation with the electric spindle under the condition of ensuring high transmission precision.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of the overall structure of the micro electric discharge machining/electrolytic machining spindle provided by the present invention; wherein FIG. 1(a) is a front view of the overall structure; FIG. 1(b) is a perspective view of the overall structure;
fig. 2 is a schematic structural view of the integrated insulating sleeve provided by the present invention; wherein FIG. 2(a) is a cross-sectional view of a one-piece insulative sleeve; FIG. 2(b) is a perspective view of the one-piece insulative sleeve;
FIG. 3 is a schematic view of the tool electrode chuck and workpiece electrode assembly according to the present invention;
fig. 4 is a schematic view of a part of the structure of the current guiding device provided by the present invention; wherein FIG. 4(a) is a sectional view thereof; FIG. 4(b) is a perspective view thereof;
the numbers in the figures are respectively: 1. BM320F motorized spindle; 2. a lead support; 3. screwing the expansion bolt; 4. screwing the distraction nut; 5. an integral insulating sleeve; 6. a tool electrode cartridge; 7. a tool electrode; 8. a carbon brush; 9. a conductive bolt; 10. a conductive spring; 11. a conductive copper sheet; 12. a thin shaft; 13. stainless steel bolt holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a simple and easy fine electric spark electrolytic machining main shaft to solve traditional V piece main shaft rotational speed adjustable range limited, the device is complicated, the structure is not compact, and can't realize good electrically insulated problem between the lathe body.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Fig. 1 is a schematic view of the overall structure of the simple micro electric spark/electrochemical machining spindle provided by the present invention. As shown in fig. 1, the micro electric discharge/electrolysis (electric discharge or electrolysis) machining spindle includes: the power source module, the power transmission module and the electricity leading module.
The power source module adopts a BM320F motorized spindle 1 produced by NSK (Japanese Seiko Co., Ltd.) as a power source, and the rotating speed range of the spindle is 1000-. The utility model discloses a BM320F electricity main shaft (for short electricity main shaft) 1 of NSK production is as the power supply, can realize 1000 and supplyes 80000r/min continuously adjustable under high gyration precision, can realize that fine electric spark/electrolysis adjustable range is wide, the rotary machining of higher speed.
The power transmission module adopts an integrated insulating sleeve 5. Fig. 2 is a schematic structural view of the integral insulation sleeve provided by the present invention. As shown in FIG. 2, the integral insulation sleeve 5 of the present invention has a thin shaft 12 at the top, and a stainless steel bolt hole 13 at the bottom of the integral insulation sleeve 5. The integrated insulating sleeve 5 is installed on the electric spindle 1, the thin shaft 12 matched with the spindle of the electric spindle 1 is arranged at the top of the integrated insulating sleeve 5, the diameter of the thin shaft 12 is 3.175mm, and the electric spindle 1 is connected with the integrated insulating sleeve 5 through a spindle installation chuck.
The electricity leading module comprises an electricity leading support part 2, a screwing expansion bolt 3, a screwing expansion nut 4, a tool electrode chuck 6, a tool electrode 7, a carbon brush 8, a conductive bolt 9, a conductive spring 10 and a conductive copper sheet 11.
Fig. 3 is a schematic view of the tool electrode chuck and the workpiece electrode according to the present invention. The tool electrode chuck 6 is a hardened and tempered steel countersunk head taper bolt, and the top of the tool electrode chuck is provided with threads. The tool electrode 7 is a tungsten carbide cylindrical rod with the diameter of 1mm, and the assembly structure diagram is shown in figure 3.
Integral type insulating sleeve 5 forms for the processing of plastic material, and the structure is shown in fig. 2, 5 upper ends of integral type insulating sleeve are thin axle 12, with the hookup of electricity main shaft 1, and lower extreme embedding stainless steel bolt hole 13 just need guarantee bolt hole 13 and the required axiality requirement of the thin axle 12 in upper end. The entrance of the bolt hole 13 is provided with a certain taper, the taper of the bolt hole is equal to that of the tool electrode chuck 6, the coaxiality of the integrated insulating sleeve 5 and the tool electrode 7 is ensured by utilizing the matching of taper holes, and the requirement of ensuring the coaxiality of the tool electrode 7 and the electric spindle 1 of the BM320F is met.
Fig. 4 is a schematic view of a partial structure of the electricity guiding device provided by the present invention. Carbon brush 8 is graphite material, it adopts plastics PLA (polylactic acid ) material 3D to print and makes to draw electric support piece 2, and package assembly is as shown in figure 3. Two wing plates with a U-shaped structure are arranged at the top of the electricity leading support piece 2, an L-shaped support rod is arranged below the two wing plates, a through hole is formed in a cross rod at the bottom of the L-shaped support rod, and the conductive bolt 9, the conductive copper sheet 11, the conductive spring 10 and the carbon brush 8 are sequentially connected and arranged in the through hole. The carbon brush 8 is arranged in the electricity leading support part 2, the tail part of the carbon brush 8 is connected with the conductive spring 10, the conductive spring 10 ensures that the carbon brush 8 can be always contacted with the tool electrode 7, the other end of the conductive spring 10 is connected with the conductive copper sheet 11, the conductive bolt 9 is propped against the conductive copper sheet 11, and the tail part of the conductive bolt 9 is connected with one electrode of the spark power supply/the electrolysis power supply.
The utility model discloses simple and easy micro electric spark or the whole assembly drawing of electrolytic machining main shaft is shown in fig. 1, thin axle 12 and the hookup of electricity main shaft 1 of integral type insulating sleeve 5 through the upper end, tool electrode 7 dress is on tool electrode chuck 6, and tool electrode chuck 6 passes through screw hole 13 of screw thread screw in integral type insulating sleeve 5, draw two pterygoid laminas in 2 tops of electric support piece and install on the axle body of BM320F electric high-speed main shaft 1, strut bolt 3 through screwing and fix on BM320F electricity main shaft with nut 4.
Specifically, as shown in fig. 1, two wing plates at the top of the electricity leading support 2 are installed on the shaft body of the electric spindle 1 of the BM320F through the tightening distraction bolt 3 and the tightening distraction nut 4; the integrated insulating sleeve 5 is coupled with the spindle of the BM320F electric spindle 1 through the thin spindle 12 at the top; the tool electrode chuck 6 is screwed into the stainless steel bolt hole 13 at the bottom of the integrated insulating sleeve 5 through the top thread of the tool electrode chuck; the tool electrode 7 is clamped at the bottom of the tool electrode chuck 6; the bottom of the electricity leading supporting piece 2 is provided with a through hole; the conductive bolt 9, the conductive copper sheet 11, the conductive spring 10 and the carbon brush 8 are sequentially arranged in the through hole; the head part of the carbon brush 8 is contacted with the tool electrode 7, and the tail part of the carbon brush 8 is connected with one end of the conductive spring 10; the other end of the conductive spring 10 is connected with one side of the conductive copper sheet 11; the head of the conductive bolt 9 is pressed against the other side of the conductive copper sheet 11, and the tail of the conductive bolt 9 is connected with one pole of an electric spark power supply or an electrolysis power supply.
Wherein, the rotating speed range of the electric spindle 1 of the BM320F is 1000-.
The diameter of the thin shaft 12 at the top of the integrated insulating sleeve 5 is 3.175 mm.
The tool electrode chuck 6 is a hardened and tempered steel countersunk head taper bolt.
The tool electrode 7 is a tungsten carbide cylindrical rod with the diameter of 1 mm.
The carbon brush 8 is made of graphite material; the electricity leading supporting piece 2 is made of PLA materials through 3D printing.
The utility model provides a simple and easy fine electric spark or fine electrolytic machining main shaft can install and use on fine electric spark machine tool or fine electrolytic machining machine tool, carries out fine electric spark machining or fine electrolytic machining.
Fine electric discharge machining example:
a simple micro electric discharge machining spindle is mounted on a micro electric discharge machining machine, and a tool electrode 7 is mounted on an electric spindle 1 through a tool electrode chuck 6. Before micro electric discharge machining, block/wire electrode electric discharge grinding machining needs to be carried out on the tool electrode 7, so that good coaxiality of the machined micro tool electrode 7 and the electric spindle 1 can be guaranteed.
When electric spark is used for online grinding, the anode of an electric spark power supply is electrified to the tool electrode 7 through the carbon brush 8, and the tool electrode 7 is ground to a required micro size according to the machining requirement.
In the micro electric spark machining, the cathode of a micro electric spark machining power supply is electrified to a micro tool electrode 7 through a carbon brush 8, then the rotating speed required by the spindle is set through a BM320F electric spindle 1 controller, the rotating speed range is 1000-80000r/min and is generally within 20000r/min, and then the micro electric spark machining is carried out under the control of a control system.
Fine electrolytic processing example:
a simple micro-electrochemical machining spindle is mounted on a micro-electrochemical machining machine tool, and a tool electrode 7 is mounted on an electric spindle 1 via a tool electrode chuck 6. Before the micro electrochemical machining, the tool electrode 7 needs to be subjected to block/wire electrode electric spark grinding machining, so that the machined micro tool electrode 7 and the electric spindle 1 can be ensured to have good coaxiality.
When electric spark is used for online grinding, the anode of an electric spark power supply is electrified to the tool electrode 7 through the carbon brush 8, and the tool electrode 7 is ground to a required micro size according to the machining requirement.
In the micro electrolytic machining, the cathode of a micro electrolytic machining power supply is electrified to a micro tool electrode 7 through a carbon brush 8, then the rotating speed required by the spindle is set through a BM320F electric spindle 1 controller, the rotating speed range is 1000-.
The utility model provides a pair of it is simple and easy fine electric spark electrolytic machining main shaft, its compact structure, excellent performance, convenient and practical can realize electric spark processing, electrolytic machining, its advantage as follows:
1. the NSK electric spindle 1 is used as a power source, the rotating speed adjusting range of the electric spindle 1 is wide, and the spindle can rotate at a high speed in micro electric spark/electrolytic machining.
2. PLA electrically conductive support 2 through integral type insulating sleeve 5 and 3D printing keeps apart electric main shaft 1 and the tool electrode 7 that draws electricity, compact structure and can realize good electric insulation.
3. The structure that the bolt 9 is propped against the spring 10 to be connected with the carbon brush 8 enables the electric transmission to have a semi-automatic adjusting function, the carbon brush 8 can be guaranteed to be always in contact with the tool electrode 7, and the stability of the electric transmission is guaranteed.
4. The integrated insulating sleeve 5 is matched with the tool electrode 7 through the taper, so that high rotation precision and processing stability can be guaranteed.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. A simple micro electric discharge/electrolytic machining spindle, characterized by comprising: the power source module, the power transmission module and the electricity leading module;
the power source module is a BM320F electric main shaft produced by NSK of Japan; the power transmission module is an integrated insulating sleeve; the top of the integrated insulating sleeve is provided with a thin shaft, and the bottom of the integrated insulating sleeve is provided with a stainless steel bolt hole; the electricity leading module comprises an electricity leading support piece, a screwing spreading bolt, a screwing spreading nut, a tool electrode chuck, a tool electrode, a carbon brush, a conductive bolt, a conductive spring and a conductive copper sheet;
the two wing plates at the top of the electricity leading support piece are arranged on the shaft body of the BM320F electric main shaft through the screwing distraction bolt and the screwing distraction nut; the integrated insulating sleeve is coupled with a main shaft of the BM320F electric main shaft through the thin shaft at the top; the tool electrode chuck is screwed into the stainless steel bolt hole at the bottom of the integrated insulating sleeve through the top thread of the tool electrode chuck; the tool electrode clamp is arranged at the bottom of the tool electrode chuck; the bottom of the electricity leading supporting piece is provided with a through hole; the conductive bolt, the conductive copper sheet, the conductive spring and the carbon brush are sequentially arranged in the through hole; the head part of the carbon brush is contacted with the tool electrode, and the tail part of the carbon brush is connected with one end of the conductive spring; the other end of the conductive spring is connected with one side of the conductive copper sheet; the head of the conductive bolt is pressed against the other side of the conductive copper sheet, and the tail of the conductive bolt is connected with one pole of an electric spark power supply or an electrolysis power supply.
2. The micro electric spark/electrochemical machining spindle as claimed in claim 1, wherein the rotation speed range of the BM320F electric spindle is 1000-.
3. The micro electric discharge/electrolysis machining spindle according to claim 1, wherein the diameter of the thin shaft at the top of the integrated insulating sleeve is 3.175 mm.
4. The micro electric discharge/electrolytic machining spindle according to claim 1, wherein the tool electrode holder is a hardened and tempered steel countersunk tapered bolt.
5. The micro electric discharge/electrolytic machining spindle according to claim 1, wherein the tool electrode is a cylindrical rod of tungsten carbide having a diameter of 1 mm.
6. The micro electric discharge/electrolytic machining spindle according to claim 1, wherein the carbon brush is made of a graphite material; the electricity leading supporting piece is made of PLA materials through 3D printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020393112.9U CN212070692U (en) | 2020-03-25 | 2020-03-25 | Simple micro electric spark/electrolytic machining spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020393112.9U CN212070692U (en) | 2020-03-25 | 2020-03-25 | Simple micro electric spark/electrolytic machining spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212070692U true CN212070692U (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020393112.9U Expired - Fee Related CN212070692U (en) | 2020-03-25 | 2020-03-25 | Simple micro electric spark/electrolytic machining spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212070692U (en) |
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2020
- 2020-03-25 CN CN202020393112.9U patent/CN212070692U/en not_active Expired - Fee Related
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Granted publication date: 20201204 |