CN202199874U - Precision numerical control indexing rotating shaft for electric discharge machining - Google Patents
Precision numerical control indexing rotating shaft for electric discharge machining Download PDFInfo
- Publication number
- CN202199874U CN202199874U CN2011201540422U CN201120154042U CN202199874U CN 202199874 U CN202199874 U CN 202199874U CN 2011201540422 U CN2011201540422 U CN 2011201540422U CN 201120154042 U CN201120154042 U CN 201120154042U CN 202199874 U CN202199874 U CN 202199874U
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- main shaft
- rotating shaft
- digital control
- shaft body
- accurate digital
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Abstract
The utility model belongs to the field of nonconventional machining, and discloses a precision numerical control indexing rotating shaft for electric discharge machining. The precision numerical control indexing rotating shaft comprises a main shaft body, a permanent magnet alternating current servo moment motor connected with the main shaft body and a grating encoder arranged at the upper end of the main shaft body. A braking device is arranged on the main shaft body to control the main shaft body to stop rotating. The bottom end of the main shaft body is provided with a power supply device for supplying power to an electrode in the center of the bottom end of the main shaft body. A main shaft flushing liquid cooling device is arranged on the main shaft body, and introduces liquid from the outside of the main shaft body for the heat exchange and flushing of the main shaft body. The precision numerical control indexing rotating shaft integrates a precision numerical control indexing shaft and a high-speed rotating shaft, and accessories are not required to be replaced in precision indexing machining and high-speed rotating machining, so that machining efficiency is improved, and tool electrodes and workpieces can be automatically replaced; in addition, the precision numerical control indexing rotating shaft adopts an integrated structure design, so that a driving chain is shortened, backlash is avoided, and the precision numerical control indexing rotating shaft has relatively higher indexing accuracy and relatively quicker servo response.
Description
Technical field
The utility model belongs to the special processing technology field, particularly relates to a kind of spark machined accurate digital control calibration rotating shaft.
Background technology
Accurate digital control dividing spindle (being called for short the C axle) is the special accessories of accurate digital control spark-erosion sinking lathe; Be also referred to as the U axle; It is controlled by digital control system, can carry out the processing of accurate angle orientation and rotating servo, also can with the processing that links of lathe linear axis; The lathe linear axis comprises orthogonal X axle and Y axle in the horizontal plane, and belongs to the perpendicular Z axle in plane with X, Y axle.C axle and the interlock of Z axle can be processed similar part such as internal and external threads, interior outer oblique gear, helical curve; C axle and X, the interlock of Y axle can be processed similar part such as tooth bar, cylinder pattern mould.Numerical control electric spark shaping machining tool is joined C axle special accessories; Can realize more than four multi-shaft interlockedly easily, can enlarge its scope of application, especially the workpiece of curve or curve form adds man-hour; Can process complicated die cavity and cross section, like turbine, turbo wheel etc.
High-speed rotating shaft (being called for short the R axle) is the special accessories of accurate digital control spark-erosion sinking lathe.Tradition R shaft mechanical apparatus structure is generally controlled by the adjustable speed DC servo motor; Rotating speed through pulley decelerates control rotating shaft; Rotating speed is stepless adjustable in 0～1500prm scope; Realize the high speed rotary processing, be mainly used in the copy protection of profile processing, aperture and little pore electrod and repair processing etc.
Precision indexing processing at present will be accomplished by C axle special accessories and R axle special accessories respectively with the high speed rotary processing, need carry out accessory replacing during use, increases lathe non-cutting time, reduces working (machining) efficiency, and influences lathe realization automation.
The utility model content
The technical problem that (one) will solve
The technical problem that the utility model will solve is how to overcome workpiece when precision indexing processing and high speed rotary processing, to change the problem of processing attachment, thereby improves working (machining) efficiency, makes replacing tool-electrode and workpiece realize automation.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of spark machined accurate digital control calibration rotating shaft, and it comprises: main shaft, and the permanent magnetic Ac servo torque motor that is connected with main shaft is arranged on the grating encoder of main shaft upper end;
Said main shaft is provided with brake gear, and the control main shaft stops operating; Said main shaft bottom is provided with electricity-supply device, for being arranged on the electrode power supply of main shaft bottom center; Said main shaft is provided with main shaft towards the liquid cooling radiator cooler, pours liquid in the main shaft outside, for the main shaft heat exchange and provide processing towards liquid.
Wherein, said permanent magnetic Ac servo torque motor comprises: rotor is installed on the said main shaft; Stator coil is arranged on the rotor outside, and is installed on the collar bush of main shaft outer setting through the shell of torque motor.
Wherein, be connected with said grating encoder through insulating bar on the said main shaft.
Wherein, said main shaft middle part is arranged with little bearing, and said little bearing is installed on the said collar bush; Said main shaft bottom is arranged with big bearing, and said big bearing is arranged on the main shaft outside through chassis bearing mounting flange.
Wherein, said brake gear comprises: brake disc, be arranged on bearing mounting flange top, said chassis, and its bottom disc is fixed on the main shaft; The brake air cushion is arranged on brake disc top, and is supported by spring, is provided with rubber seal around the said brake air cushion, and the top is provided with air chamber.
Wherein, said electricity-supply device comprises rotating unit and moving cell not; Said rotating unit comprises: advance the electrolytic copper ring, be set on the big bearing inner ring fixture, big bearing inner ring fixture is connected with big bearing, and contacts with the main shaft bottom outer wall; Said not moving cell comprises: carbon post copper sheathing, its inside opening end and said advance the electrolytic copper loop contacts, and its outside opening end is provided with into electrical carbon post fixture, and its inside is equipped with spring and supports the carbon post.
Wherein, Said main shaft comprises towards the liquid cooling radiator cooler: be arranged on said main shaft and collar bush top and be positioned at end face liquid pipeline connector between the two; Between main shaft and collar bush and be positioned at end face liquid pipeline connector bottom dash the liquid passage, and with the said main shaft flushing hole that is connected towards liquid passage and main shaft centre bore.
Wherein, said little bearing is angular contact ball bearing with big bearing.
Wherein, said brake air cushion is provided with fixedly air cushion spare, and said spring is installed in fixedly on the air cushion spare, so that spring is located; Said brake disc bottom is provided with the adjusting thin slice, to regulate the axial location of brake disc, regulates thin slice and is installed on the main shaft through the thin slice fixture.
Wherein, advance said main shaft bottom outer wall that the electrolytic copper ring is electrically connected and be provided with a plurality of electric salient points that advance with said.
(3) beneficial effect
The spark machined accurate digital control calibration rotating shaft that technique scheme provided; Accurate digital control dividing spindle and high-speed rotating shaft are designed to one; Precision indexing processing need not changed annex with the high speed rotary processing; Thereby improved working (machining) efficiency, changed tool-electrode and workpiece and can realize automation; In addition, the utility model adopts integrated structure design, has shortened driving-chain, does not have backlass, has higher indexing accuracy and servo response performance.
Description of drawings
Fig. 1 is the cutaway view of the spark machined accurate digital control calibration rotating shaft of the utility model embodiment;
Fig. 2 is another cutaway view of the spark machined accurate digital control calibration rotating shaft of the utility model embodiment.
Wherein, 1-protective sleeve; 2-first hold-down screw; 3-grating encoder fixed mount; The 4-grating encoder; The 5-insulating bar; 6-second hold-down screw; The 7-insulating disc; 8-end cap accessory; The 9-steel ring; The 10-first little bearing fixing axle sleeve; The 11-second little bearing fixing axle sleeve; The 12-collar bush; 13-the 3rd hold-down screw; The trapezoidal tensioner internal axle sleeve of 14-; 15-motor casing outer shroud; The 16-rotor; The 17-main shaft; The 18-air cushion that brakes; 19-chassis bearing mounting flange; 20-advances electrical carbon post fixture; 21-advances the electrolytic copper ring; 22-is air cushion spare fixedly; 23-the 4th hold-down screw; 24-the 5th hold-down screw; 25-regulates thin slice; The big bearing inner ring fixture of 26-; 27-carbon post copper sheathing; The big outer race fixture of 28-; The big bearing of 29-; The 30-brake disc; 31-disc fixture; The 32-spring; The 33-motor housing; The 34-stator coil; The 35-locking axle sleeve; The trapezoidal tensioner outer shaft of 36-; The fastening axle sleeve of 37-; The little bearing of 38-; 39-the 6th hold-down screw; The last lippacking of 40-; Lippacking under the 41-; 42-main shaft flushing hole; 43-sleeve sealing spare; The 44-spindle hole; 45-main shaft clamping position.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
Fig. 1 and Fig. 2 show the cutaway view of the spark machined accurate digital control calibration rotating shaft of the utility model embodiment respectively.The setting that is combined as a whole of accurate digital control dividing spindle that the axis body of present embodiment is required with spark machined and high-speed rotating shaft; Comprise that mainly main shaft 17, permanent magnetic Ac servo torque motor, grating encoder 4, electricity-supply device, brake gear, main shaft are towards liquid cooling radiator cooler, gas path device etc.; Main shaft 17 bottoms are provided with main shaft clamping position 45, as the installation position of spark machined with electrode or work piece holder is installed.
The permanent magnetic Ac servo torque motor mainly comprises rotor 16 and stator coil 34; Rotor 16 is directly installed on the main shaft 17 through trapezoidal tensioner internal axle sleeve 14; Stator coil 34 is arranged on rotor 16 outsides, and is installed on the collar bush 12 of main shaft 17 outer setting through motor housing 33.Grating encoder 4 is installed through insulating bar 5 in main shaft 17 upper ends, and insulating bar 5 protection grating encoders 4 are not destroyed by the electric spark power source voltage.17 rotations of torque motor driving main shaft body are also passed through accurately feedback angle positions of grating encoder 4; Realize the precision round subsection function by the control of full cut-off ring; Owing to adopt torque motor and main shaft integrated structure design, drive main shaft 17 high speed rotations by torque motor and then realized the high-speed rotating shaft function.
Be to guarantee the rotating accuracy of main shaft 17, the middle part of main shaft 17 and bottom are sheathed respectively little bearing 38 and big bearing 29, little bearing 38 is installed on the collar bush 12, and bearing 29 is arranged on main shaft 17 outsides through chassis bearing mounting flange 19 greatly.And little bearing 38 tops are provided with the first little bearing fixing axle sleeve 10 and the second little bearing fixing axle sleeve 11, with fixing little bearing 38, the location of guaranteeing main shaft 17.Ring and outer shroud place are provided with big bearing inner ring fixture 26 and big outer race fixture 28 respectively in the big bearing 29, with fixing big bearing 29.Little bearing 38 is all selected angular contact ball bearing for use with big bearing 29.
Because the main shaft 17 and the torque motor of present embodiment are wholely set; Therefore do not have deceleration device, do not possess auto-lock function, when main shaft 17 is static, need brake; So that holding position is constant when changing the clamping parts or not using this; So designed brake gear in the present embodiment, brake gear mainly comprises brake disc 30, brake air cushion 18 and air chamber (not indicating among the figure), and brake disc 33 is arranged on bearing mounting flange 19 tops, chassis; Its bottom disc is fixed on the main shaft 17 through thin slice fixture 31, rotates with main shaft 17; Brake air cushion 18 is supported by spring 32 and is installed in brake disc 30 tops, is provided with rubber seal around the brake air cushion 18, and the top is provided with air chamber.Brake also is provided with fixedly air cushion spare 22 on the air cushion 18, and spring 32 is installed in fixedly on the air cushion spare 22, and utilization fixedly 22 pairs of springs of air cushion spare 32 is located; Brake disc 30 bottoms also are provided with regulates thin slice 25, to regulate the axial location of brake disc 30, regulates thin slice 25 and is installed on the main shaft 17 through thin slice fixture 31.The operation principle of brake gear is: the Compressed Gas that in air chamber, feeds certain pressure; The air cushion 18 that promotes to brake overcomes spring 32 elastic force and moves down; Make brake air cushion 18 and the chassis bearing mounting flange 19 common brake discs 30 that clamp; Through brake disc 30 stop main shaft 17 is stopped operating, realize brake function thus.
Electricity-supply device mainly comprises rotating unit and moving cell not, and rotating unit comprises into electrolytic copper ring 21, advances electrolytic copper ring 21 and is set on the big bearing inner ring fixture 26, and big bearing inner ring fixture 26 is connected with bearing 29 greatly, and contacts with main shaft 17 bottom outer wall; Moving cell is not made up of the inner spring support carbon post of installing (indicating among the figure) of carbon post copper sheathing 27 and its; Carbon post copper sheathing 27 inside opening ends with advance electrolytic copper ring 21 and contact; Its outside opening end is provided with into electrical carbon post fixture 20; The carbon post relies on spring force under the effect of advancing electrical carbon post fixture 20, closely to contact with advancing electrolytic copper ring 21, and the structural principle of electricity-supply device is: with the utmost point in the electric spark two poles by moving cell introducing rotating unit not, and reliably electrically contacting in the assurance rotation process.In order to make electric conductivity good, can main shaft 17 with advance bottom outer wall that electrolytic copper ring 21 is electrically connected and be provided with a plurality of electric salient points that advance.
Main shaft towards the main effect of liquid cooling radiator cooler is: (1) cooling main shaft 17; Main shaft 17 produces certain heat in the electric machining process; Therefore will corresponding generation certain deformation, in order to reduce deflection injects certain pressure in main shaft 17 electric machining working solution, take away certain heat; (2) chip removal can produce scrap between workpiece and the electrode in the spark discharge process, as can not in time discharging, can cause the processing short circuit, pours liquid and can discharge the processing bits timely.
As can be seen from Figure 2; Main shaft towards the structure of liquid cooling radiator cooler is: at main shaft 17 with collar bush 12 tops and be arranged in and be provided with end face liquid pipeline connector (figure does not indicate) between the two; In end face liquid pipeline connector bottom and between main shaft 17 and collar bush 12; For towards the liquid passage, be provided with the main shaft flushing hole 42 that is connected with main shaft 17 centre bores towards between liquid passage and the main shaft 17.In the liquid passage, be provided with lippacking 40 and following lippacking 41, formed upper and lower O type circle.Working solution is the end face liquid pipeline connector that working solution passes through collar bush 12 at main shaft towards the course of work in the liquid cooling radiator cooler; Get into the flushing hole road of collar bush 12 inside; Because collar bush 12 sidewalls have main shaft flushing hole 42; Working solution enters into the ring-shaped groove of sleeve sealing spare 43 smoothly under the effect of upper and lower O type circle; Because sleeve sealing spare 43 inwalls are equipped with lip-type packing 40 and following lip-type packing 41, make the working solution that enters into ring-shaped groove under certain pressure, be injected into main shaft 17 centre bores again, arrive clamping position, main shaft 17 bottom 4 at last and rush at electrode and workpiece through the anchor clamps of installing again through main shaft flushing hole 42; The continuous liquid supply and the movable sealing of rotating part and static part have been realized, for axis body provides cooling and provides towards liquid for the spark discharge machining center.
Protective sleeve 1 act as and protects grating encoder 4 not to be damaged among Fig. 1; Hold-down screw 2 is fixed on protective sleeve on the end cap accessory 8; Grating encoder fixed mount 3 can be regulated the position of grating encoder 4 automatically for elastomeric material; The electrical relation that insulating disc 7 is isolated between grating encoder 4 and the main shaft 17, end cap accessory 8 mainly is gas circuit and the liquid road that is sealed into into main shaft 17, steel ring 9 stops the first little bearing fixing axle sleeve 10 and the second little bearing fixing axle sleeve 11; Motor casing outer shroud 15 prevents that the liquid of cooling motor from flowing out; Big outer race fixture 28 compresses the outer shroud of big bearing 29, motor housing 33 support motor stator coils 34, and locking axle sleeve 35 and fastening axle sleeve 37 are the device of locking motor rotor 16.The screw at other each positions mainly is the fixing device of relevant position.In addition; Shown in the figure first fixedly hold-down screw 2 is used for fixing protective sleeve 1; Second hold-down screw 6 is used for being fixed on end cap accessory 8, the three hold-down screws 13 fixed electrical machinery rotors 16, the four hold-down screws 23 to protective sleeve 1 and is used for fixing brake block 30; The 5th hold-down screw 24 is used for fixing fixedly, and air cushion spare 22, the six hold-down screws 39 are used for fixing little bearing fixing axle sleeve 11.
Can find out by above embodiment; The utility model embodiment is designed to one with accurate digital control dividing spindle and high-speed rotating shaft; Precision indexing processing need not changed annex with the high speed rotary processing, thereby from having improved working (machining) efficiency, changes tool-electrode and workpiece and can realize automation; In addition, the utility model adopts integrated structure design, has shortened driving-chain, does not have backlass, has higher indexing accuracy and servo response performance.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and replacement, these improvement and replacement also should be regarded as the protection domain of the utility model.
Claims (10)
1. spark machined accurate digital control calibration rotating shaft is characterized in that, comprising: main shaft (17) with the permanent magnetic Ac servo torque motor that main shaft (17) is connected, is arranged on the grating encoder (4) of main shaft (17) upper end;
Said main shaft (17) is provided with brake gear, and control main shaft (17) stops operating; Said main shaft (17) bottom is provided with electricity-supply device, for being arranged on the electrode power supply of main shaft (17) bottom center; Said main shaft (17) is provided with main shaft towards the liquid cooling radiator cooler, pours liquid in main shaft (17) outside, for the main shaft heat exchange and provide processing towards liquid.
2. spark machined accurate digital control calibration rotating shaft as claimed in claim 1 is characterized in that said permanent magnetic Ac servo torque motor comprises: rotor (16) is installed on the said main shaft (17); Stator coil (34) is arranged on rotor (16) outside, and is installed on the collar bush (12) of main shaft (17) outer setting through the shell of torque motor.
3. spark machined accurate digital control calibration rotating shaft as claimed in claim 1 is characterized in that, said main shaft (17) upper end is connected with said grating encoder (4) through insulating bar (5).
4. spark machined accurate digital control calibration rotating shaft as claimed in claim 2 is characterized in that, said main shaft (17) middle part is arranged with little bearing (38), and said little bearing (38) is installed on the said collar bush (12); Said main shaft (17) bottom is arranged with big bearing (29), and said big bearing (29) is arranged on main shaft (17) outside through chassis bearing mounting flange (19).
5. spark machined accurate digital control calibration rotating shaft as claimed in claim 4 is characterized in that said brake gear comprises: brake disc (30), be arranged on said chassis bearing mounting flange (19) top, and its bottom disc is fixed on the main shaft (17); Brake air cushion (18) is arranged on brake disc (30) top, and is supported by spring (32), and said brake air cushion (18) is provided with rubber seal on every side, and the top is provided with air chamber.
6. spark machined accurate digital control calibration rotating shaft as claimed in claim 4 is characterized in that, said electricity-supply device comprises rotating unit and moving cell not; Said rotating unit comprises: advance electrolytic copper ring (21), be set on the big bearing inner ring fixture (26), big bearing inner ring fixture (26) is connected with big bearing (29), and contacts with main shaft (17) bottom outer wall; Said not moving cell comprises: carbon post copper sheathing (27), and its inside opening end advances electrolytic copper ring (21) and contacts with said, and its outside opening end is provided with into electrical carbon post fixture (20), and its inside is equipped with spring and supports the carbon post.
7. spark machined accurate digital control calibration rotating shaft as claimed in claim 2; It is characterized in that; Said main shaft comprises towards the liquid cooling radiator cooler: be arranged on said main shaft (17) and collar bush (12) top and be positioned at end face liquid pipeline connector between the two; Be positioned between main shaft (17) and the collar bush (12) and be positioned at end face liquid pipeline connector bottom dash the liquid passage, and with the said main shaft flushing hole (42) that is connected towards liquid passage and main shaft (17) centre bore.
8. spark machined accurate digital control calibration rotating shaft as claimed in claim 4 is characterized in that, said little bearing (38) and big bearing (29) are angular contact ball bearing.
9. spark machined accurate digital control calibration rotating shaft as claimed in claim 5 is characterized in that said brake air cushion (18) is provided with fixedly air cushion spare (22), and said spring (32) is installed in fixedly on the air cushion spare (22), so that spring (32) is located; Said brake disc (30) bottom is provided with regulates thin slice (25), to regulate the axial location of brake disc (30), regulates thin slice (25) and is installed on the main shaft (17) through thin slice fixture (31).
10. spark machined accurate digital control calibration rotating shaft as claimed in claim 6 is characterized in that, advances said main shaft (17) bottom outer wall that electrolytic copper ring (21) is electrically connected and is provided with a plurality of electric salient points that advance with said.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201540422U CN202199874U (en) | 2011-05-13 | 2011-05-13 | Precision numerical control indexing rotating shaft for electric discharge machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201540422U CN202199874U (en) | 2011-05-13 | 2011-05-13 | Precision numerical control indexing rotating shaft for electric discharge machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202199874U true CN202199874U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201540422U Expired - Fee Related CN202199874U (en) | 2011-05-13 | 2011-05-13 | Precision numerical control indexing rotating shaft for electric discharge machining |
Country Status (1)
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| CN (1) | CN202199874U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773574A (en) * | 2011-05-13 | 2012-11-14 | 北京市电加工研究所 | Precise numerical control indexing rotating shaft for electric discharge machining |
| CN103317154A (en) * | 2013-05-29 | 2013-09-25 | 贵阳新天光电科技有限公司 | High-accuracy spindle system |
| CN103567469A (en) * | 2013-11-14 | 2014-02-12 | 天津第一机床总厂 | Machine tool spindle device of numerically-controlled gear milling machine for spiral bevel gear |
| CN108072393A (en) * | 2016-11-08 | 2018-05-25 | 苏州博拉腾信息科技有限公司 | A kind of insulated rotary encoder |
| CN113263233A (en) * | 2021-06-10 | 2021-08-17 | 南京宁庆数控机床制造有限公司 | Main shaft heat radiation structure of special processing machine tool |
| JP6963148B1 (en) * | 2020-12-25 | 2021-11-05 | ヤマザキマザック株式会社 | Rotating shaft lock device, machining head, and multi-tasking machine |
| CN113843461A (en) * | 2021-10-15 | 2021-12-28 | 南京航空航天大学 | Five-axis head of electrolytic milling and grinding machine tool |
-
2011
- 2011-05-13 CN CN2011201540422U patent/CN202199874U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773574A (en) * | 2011-05-13 | 2012-11-14 | 北京市电加工研究所 | Precise numerical control indexing rotating shaft for electric discharge machining |
| CN102773574B (en) * | 2011-05-13 | 2014-12-10 | 北京市电加工研究所 | Precise numerical control indexing rotating shaft for electric discharge machining |
| CN103317154A (en) * | 2013-05-29 | 2013-09-25 | 贵阳新天光电科技有限公司 | High-accuracy spindle system |
| CN103567469A (en) * | 2013-11-14 | 2014-02-12 | 天津第一机床总厂 | Machine tool spindle device of numerically-controlled gear milling machine for spiral bevel gear |
| CN103567469B (en) * | 2013-11-14 | 2016-04-13 | 天津第一机床总厂 | Milling machine of digital-control spiral conical gear tool spindle device |
| CN108072393A (en) * | 2016-11-08 | 2018-05-25 | 苏州博拉腾信息科技有限公司 | A kind of insulated rotary encoder |
| JP6963148B1 (en) * | 2020-12-25 | 2021-11-05 | ヤマザキマザック株式会社 | Rotating shaft lock device, machining head, and multi-tasking machine |
| WO2022137538A1 (en) * | 2020-12-25 | 2022-06-30 | ヤマザキマザック株式会社 | Rotational shaft lock device, processing head, and composite processing machine |
| CN116669899A (en) * | 2020-12-25 | 2023-08-29 | 山崎马扎克公司 | Rotating shaft locking device, machining head and compound machining machine |
| CN116669899B (en) * | 2020-12-25 | 2024-05-14 | 山崎马扎克公司 | Rotating shaft locking device, machining head and compound machining machine |
| CN113263233A (en) * | 2021-06-10 | 2021-08-17 | 南京宁庆数控机床制造有限公司 | Main shaft heat radiation structure of special processing machine tool |
| CN113843461A (en) * | 2021-10-15 | 2021-12-28 | 南京航空航天大学 | Five-axis head of electrolytic milling and grinding machine tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20150513 |
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| EXPY | Termination of patent right or utility model |