CN110576197A - Electric spindle - Google Patents
Electric spindle Download PDFInfo
- Publication number
- CN110576197A CN110576197A CN201910867772.8A CN201910867772A CN110576197A CN 110576197 A CN110576197 A CN 110576197A CN 201910867772 A CN201910867772 A CN 201910867772A CN 110576197 A CN110576197 A CN 110576197A
- Authority
- CN
- China
- Prior art keywords
- piston
- electric spindle
- electric
- shell
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 23
- 210000004907 gland Anatomy 0.000 claims description 10
- 238000003754 machining Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 10
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
Abstract
The invention discloses an electric spindle, which belongs to the technical field of machine tool machining equipment and comprises a spindle core (10) and a shell (6), wherein a driving motor is further arranged in the shell (6), a bearing I (11) and a bearing II (15) are respectively arranged at two ends of the driving motor, the spindle core (10) is connected with the bearing I (11) and the bearing II (15), a cutter fixing seat (19) is arranged at the front end of the spindle core (10), and a pressing mechanism for pressing or loosening the spindle core (10) is further arranged in the shell (6).
Description
Technical Field
The invention belongs to the technical field of machine tool machining equipment, relates to an electric spindle, and particularly relates to an electric spindle with a tool convenient to replace.
Background
The electric main shaft mainly comprises an electric main shaft, a high-frequency converter, an oil mist lubricator, a cooling device, a built-in encoder, a tool changer and the like, because a rotor of the motor is directly used as a main shaft of a machine tool, and because no intermediate transmission link exists, the electric main shaft is also called as a 'direct transmission main shaft', the electric main shaft integrates the main shaft of the machine tool and a main shaft motor, belt wheel transmission and gear transmission are basically cancelled, the main shaft of the machine tool is directly driven by the built-in motor, and zero transmission of the machine tool is realized.
The Chinese invention patent with application number 2018103857823, which is filed on 26.04.2018, discloses an electric spindle, which comprises a shell, a stator and a shaft core, wherein the shaft core is sleeved in the shell, the middle part of the shaft core is sleeved in the stator and forms an insertion part, and the electric spindle is characterized in that: and a first balance adjusting component is arranged on one side of the inserting part, a second balance adjusting component matched with the first balance adjusting component is arranged on the other side of the inserting part, and the first balance adjusting component and the second balance adjusting component are used for adjusting the weight of the two ends of the shaft core so as to balance the weight of the two ends of the shaft core.
The application date is 2019, 03, 27 and the Chinese patent with the application number of 2019102371210 discloses an electric spindle which comprises a spindle shaft core, a motor rotor, a motor stator, a cooling sleeve and a shell, wherein the spindle shaft core, the motor rotor, the motor stator, the cooling sleeve and the shell are coaxially arranged, the motor rotor is sleeved outside the spindle shaft core, the motor stator is sleeved outside the motor rotor, the motor rotor is rotatably connected with the motor stator, the cooling sleeve is sleeved outside the motor stator, the shell is sleeved outside the cooling sleeve, a cooling channel is arranged between the cooling sleeve and the shell, the cooling channel is communicated with an external cooling liquid, and the shell is made of a carbon fiber material; above-mentioned electric main shaft, the shell adopts carbon fiber material to make, replaces the shell of metal among the prior art, and the carbon fiber has good heat dispersion, and carbon fiber material can improve the heat-sinking capability of shell, and then improves the heat dispersion of main shaft axle core, and the thermal deformation is less when being heated, is favorable to improving electric main shaft's machining precision.
The electric spindle integrates a machine tool spindle and a spindle motor as a whole as with other electric spindles in the prior art, but in a tool changing device, the tool is troublesome to replace, if the tool needs to be taken down, one hand is needed to fix a spindle core by using a clamp, and the other hand is needed to loosen the tool and the spindle core by using a special tool; if a cutter needs to be installed, the spindle core needs to be fixed by one hand through the clamp, and the cutter and the spindle core need to be fixed by the other hand through a special tool.
Disclosure of Invention
The invention aims to solve the technical problems that two hands are required to operate simultaneously when a cutter is replaced in an electric spindle in the prior art, and the cutter replacement is troublesome, and provides the electric spindle which can replace the cutter quickly by only one hand, so that the working efficiency can be improved.
In order to solve the technical problem, the invention provides an electric spindle which comprises a spindle core and a shell, wherein the spindle core is arranged in the shell, a driving motor for driving the spindle core to rotate is further arranged in the shell, the driving motor comprises a motor rotor and a stator, the motor rotor is arranged on the outer side of the spindle core in the circumferential direction and fixedly connected with the spindle core, the stator is arranged on the outer side of the motor rotor in the circumferential direction, a first bearing and a second bearing are respectively arranged at two ends of the driving motor, the spindle core is connected with the first bearing and the second bearing, a cutter fixing seat is arranged at the front end of the spindle core, and a pressing mechanism for pressing or loosening the spindle core is further arranged in the shell.
As a further improvement of the present invention, the above-mentioned electric spindle includes a piston movable block for limiting the axial rotation of the shaft core in the circumferential direction, and a driving member for driving the piston movable block to move axially.
As a further improvement measure of the present invention, in the electric spindle, the piston movable block is provided with a cylindrical groove, and a cylindrical body is arranged at the rear end of the spindle and is matched with the cylindrical groove.
As a further improvement measure of the present invention, the cylindrical body is configured as a triangular prism, a quadrangular prism, a pentagonal prism, or a hexagonal prism. The cylindrical body is convenient to process and can prevent the shaft core from rotating.
As a further improvement measure of the present invention, in the electric spindle, a piston fixing block is disposed in the housing, the piston moving block is movably connected to the piston fixing block, and the piston fixing block has a guiding function so as to axially move the piston fixing block in a certain direction.
As a further improvement measure of the present invention, in the electric spindle, an elastic component is disposed between the piston movable block and the piston fixed block, and the elastic component facilitates the piston movable block to move away from the piston fixed block.
As a further improvement of the present invention, the driving member is a cylinder.
As a further improvement of the present invention, the electric spindle is provided with a cooling device on the housing, so as to take away heat generated by the shaft core and the motor.
As a further improvement measure of the present invention, in the electric spindle, the cooling device includes a cooling channel disposed in the housing, and the cooling channel is connected with the oil inlet at one end and the oil outlet at the other end.
As a further improvement measure of the present invention, in the electric spindle, the two ends of the spindle core are provided with the pressing covers, including the front end pressing cover and the rear end pressing cover, so as to prevent other impurities from entering the spindle core, and protect the spindle core.
Compared with the prior art, the invention has the beneficial effects that: 1. the pressing mechanism used for pressing or loosening the shaft core is arranged in the shell, when the cutter needs to be replaced, the shaft core is fixed by the pressing mechanism, the shaft core is prevented from rotating in the axial direction, therefore, the cutter can be replaced by only one hand, the replacing speed is high, and the production efficiency can be improved.
2. Through set up elastomeric element between piston movable block and piston fixed block, can make the piston movable block be connected or separate with the axle center fast, be favorable to improving production efficiency.
3. Through set up cooling device in the shell, can in time give off the heat that the high-speed rotation in-process of motor produced, be favorable to improving product quality, prevent that the product from breaking down.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is a right side view of the invention.
Fig. 4 is an exploded view of the present invention.
The reference numerals of the attached drawings indicate 1-a cylinder, 2-a piston movable block, 3-an elastic part, 4-a piston fixed block, 5-a shell gland, 6-a shell, 7-a bearing box, 8-a front end gland, 9-a locking piece, 10-a shaft core, 11-a bearing I, 12-a rotor, 13-a stator, 14-a rear end gland, 15-a bearing II, 16-an oil inlet, 17-an oil outlet, 18-an air inlet, 19-a tool fixing seat, 20-a columnar groove, 21-a columnar body, 22-an air outlet and 23-a cooling channel.
Detailed Description
The invention will be further explained with reference to the drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
It should be noted that when two elements are referred to as being "fixedly connected" or "fixedly secured," the two elements may be directly connected or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "horizontal", "front", "back" and the like are used herein for illustrative purposes only.
An electric spindle as shown in fig. 1 to 4 comprises a shaft core 10 and a housing 6, the shaft core 10 is disposed in the housing 6, a driving motor for driving the shaft core 10 to rotate is further disposed in the housing 6, the driving motor comprises a motor rotor 12 and a stator 13, the motor rotor 12 is disposed on the outer side of the shaft core 10 in the circumferential direction, the motor rotor 12 is fixedly connected with the shaft core 10, the stator 13 is disposed on the outer side of the motor rotor 12 in the circumferential direction, a coil winding is disposed in the stator 13, and when the coil winding is energized, the motor rotor 12 rotates relative to the stator 13. A first bearing 11 and a second bearing 15 are respectively arranged at two ends of the driving motor, a bearing box 7 is arranged at the front end of a shaft core 10, the first bearing 11 is arranged in the bearing box 7, the shaft core 10 is connected with the first bearing 11 and the second bearing 15, the outer sides of the first bearing 11 and the second bearing 15 are fixedly connected with the shell 6, and the shaft core 10 can rotate around an axis in the first bearing 11 and the second bearing 15. The front end of the shaft core 10 is provided with a tool fixing seat 19, a tool can be fixed on the tool fixing seat 19, and a locking part 9 is arranged on the tool fixing seat 19, wherein the locking part 9 is used for fixing the tool on the tool fixing seat 19 or releasing the tool from the tool fixing seat 19.
As shown in fig. 1 to 4, in the electric spindle, a housing gland 5 is disposed at a rear end of a housing 6, a pressing mechanism for pressing or releasing a shaft core 10 is further disposed in the housing 6, the pressing mechanism includes a piston moving block 2 for limiting the shaft core 10 to rotate circumferentially in a circumferential direction and a cylinder 1 for driving the piston moving block 2 to move axially, and the cylinder 1 is provided with an air inlet 18 and an air outlet 22. Set up piston fixed block 4 in shell 6, piston movable block 2 and 4 swing joint of piston fixed block, piston fixed block 4 is used for confirming piston movable block 2 at axial direction's moving direction and shift position, sets up elastomeric element 3 between piston movable block 2 and piston fixed block 4, if set up to the spring, the spring can make piston movable block 2 deviate from 4 direction movements of piston fixed block. The piston movable block 2 is provided with a columnar groove 20, the rear end of the main shaft is provided with a columnar body 21, and the columnar body 21 is matched with the columnar groove 20. If the columnar body 21 is a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism or a cuboid, the columnar groove 20 is also a groove of a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism or a cuboid; of course, the cylindrical body 21 may be a cone or a truncated cone or other polygonal column, and the cylindrical groove 20 may be a groove of a cone or a truncated cone or other polygonal column. When the cylinder 1 is inflated, the piston movable block 2 is pushed to move towards the direction of the shaft core 10, so that the piston movable block 2 is combined with the cylindrical body 21 on the shaft core 10, the circumferential rotation of the shaft core 10 is limited, when the cylinder 1 is deflated, the piston movable block 2 moves away from the direction of the shaft core 10 under the action of the elastic component 3, the piston movable block 2 is separated from the cylindrical body 21 on the shaft core 10, and the shaft core 10 can rotate freely.
When the electric spindle needs to replace a cutter, the driving motor stops working, the motor rotor 12 stops rotating, the air cylinder 1 is inflated to push the piston movable block 2 to move towards the shaft core 10, so that the piston movable block 2 is combined with the columnar body 21 on the shaft core 10 to limit the shaft core 10 to rotate in the circumferential direction, and at the moment, a worker can rotate the locking piece 9 on the cutter fixing seat 19 with one hand to release the cutter, so that the cutter can be taken down, a new cutter is replaced, the locking piece 9 on the cutter fixing seat 19 is rotated to lock the cutter, so that the replacement speed is high, and the production efficiency can be improved. After the cutter is replaced, when the cylinder 1 deflates, the piston movable block 2 deviates from the direction of the shaft core 10 to move under the action of elastic recovery of the spring, so that the piston movable block 2 is separated from the cylindrical body 21 on the shaft core 10, at the moment, the shaft core 10 can rotate under the action of the driving motor, and thus the piston movable block 2 can be quickly connected with or separated from the shaft core 10, the production efficiency is improved, and the service life of the shaft core 10 is prolonged.
As shown in fig. 1 and 2, a cooling device is arranged in the housing 6 of the electric spindle, the cooling device includes a cooling channel 23 arranged in the housing, the cooling channel 23 is connected with the oil inlet 16 at one end and the oil outlet 17 at the other end, the cooling channel 23 introduces cooling liquid into the electric spindle, and the cooling liquid flows in the electric spindle in a circulating manner, so that heat generated by the shaft core 10 and the motor can be taken away, the heat dissipation effect of the electric spindle is improved, product failure is prevented, and the quality of the product is improved.
As shown in fig. 1 and 2, two ends of the shaft core 10 are provided with a gland, including a front end gland 8 and a rear end gland 14, for sealing the shaft core 10, so as to prevent other impurities from entering the shaft core 10 and protect the shaft core 10.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and it will be apparent to those skilled in the art that several modifications and improvements may be made without departing from the present invention, and these should be construed as falling within the scope of the present invention.
Claims (10)
1. The utility model provides an electric spindle, including axle core (10) and shell (6), axle core (10) set up in shell (6), still be provided with driving axle core (10) pivoted driving motor in shell (6), driving motor includes electric motor rotor (12) and stator (13), outside at axle core (10) circumference direction sets up electric motor rotor (12), electric motor rotor (12) and axle core (10) fixed connection, set up stator (13) in electric motor rotor (12) circumference outside, set up bearing (11) and bearing two (15) respectively at driving motor's both ends, axle core (10) are connected with bearing one (11) and bearing two (15), the front end of axle core (10) set up cutter fixing base (19), set up retaining member (9) on cutter fixing base (19), its characterized in that: a pressing mechanism for pressing or loosening the shaft core (10) is also arranged in the shell (6).
2. An electric spindle according to claim 1, characterized in that the pressing mechanism comprises a piston pad (2) which limits the axial rotation of the spindle (10) in the circumferential direction and a drive member which drives the piston pad (2) in an axial direction.
3. An electric spindle according to claim 2, characterized in that the piston movable block (2) is provided with a cylindrical groove (20), the rear end of the spindle is provided with a cylindrical body (21), and the cylindrical body (21) is matched with the cylindrical groove (20).
4. An electric spindle according to claim 3, characterized in that the cylinder (21) is arranged as a triangular, quadrangular, pentagonal or hexagonal prism.
5. An electric spindle according to claim 4, characterized in that a piston fixing block (4) is arranged in the housing (6), and the piston moving block (2) is movably connected with the piston fixing block (4).
6. An electric spindle according to claim 5, characterized in that an elastic member (3) is arranged between the movable piston block (2) and the fixed piston block (4).
7. An electric spindle according to claim 2, characterized in that the drive member is provided as a cylinder (1).
8. An electric spindle according to any one of claims 1 to 7, characterised in that cooling means are provided on the housing (6).
9. An electric spindle according to claim 8, characterized in that the cooling means comprise a housing in which a cooling channel (23) is provided, said cooling channel (23) being connected at one end to the oil inlet (16) and at the other end to the oil outlet (17).
10. An electric spindle according to claim 2, characterized in that a gland is provided at both ends of the spindle core (10), including a front end gland (8) and a rear end gland (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910867772.8A CN110576197A (en) | 2019-09-14 | 2019-09-14 | Electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910867772.8A CN110576197A (en) | 2019-09-14 | 2019-09-14 | Electric spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110576197A true CN110576197A (en) | 2019-12-17 |
Family
ID=68813002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910867772.8A Pending CN110576197A (en) | 2019-09-14 | 2019-09-14 | Electric spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110576197A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893891A (en) * | 2021-02-25 | 2021-06-04 | 广州市昊志机电股份有限公司 | Electric main shaft and drilling machine |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0740104A (en) * | 1993-07-26 | 1995-02-10 | Synx Kk | Main shaft stopping position setting device |
| CN1958230A (en) * | 2006-10-17 | 2007-05-09 | 陈硕 | Power unit capable of unloading colter rapidly |
| CN102513554A (en) * | 2011-12-23 | 2012-06-27 | 上海三一精机有限公司 | Turning-milling combined machine tool and spindle locking device thereof |
| CN102581753A (en) * | 2011-01-07 | 2012-07-18 | 北京中电科电子装备有限公司 | Cutting machine and cylinder locking device for electric spindle |
| CN104400018A (en) * | 2014-09-25 | 2015-03-11 | 广州市昊志机电股份有限公司 | Electric main shaft of turning and milling composite machine tool |
| CN106863632A (en) * | 2017-01-20 | 2017-06-20 | 广州市昊志机电股份有限公司 | A kind of machine tool chief axis for being conveniently replaceable blade |
| CN108775375A (en) * | 2018-04-26 | 2018-11-09 | 广州市昊志机电股份有限公司 | A kind of electro spindle |
| JP2019005827A (en) * | 2017-06-21 | 2019-01-17 | キヤノン株式会社 | Main shaft device for machine tool |
| CN109865848A (en) * | 2019-03-27 | 2019-06-11 | 宁波天控五轴数控技术有限公司 | A kind of electro spindle |
| CN210548153U (en) * | 2019-09-14 | 2020-05-19 | 浙江能伟科技有限公司 | Electric spindle |
-
2019
- 2019-09-14 CN CN201910867772.8A patent/CN110576197A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0740104A (en) * | 1993-07-26 | 1995-02-10 | Synx Kk | Main shaft stopping position setting device |
| CN1958230A (en) * | 2006-10-17 | 2007-05-09 | 陈硕 | Power unit capable of unloading colter rapidly |
| CN102581753A (en) * | 2011-01-07 | 2012-07-18 | 北京中电科电子装备有限公司 | Cutting machine and cylinder locking device for electric spindle |
| CN102513554A (en) * | 2011-12-23 | 2012-06-27 | 上海三一精机有限公司 | Turning-milling combined machine tool and spindle locking device thereof |
| CN104400018A (en) * | 2014-09-25 | 2015-03-11 | 广州市昊志机电股份有限公司 | Electric main shaft of turning and milling composite machine tool |
| CN106863632A (en) * | 2017-01-20 | 2017-06-20 | 广州市昊志机电股份有限公司 | A kind of machine tool chief axis for being conveniently replaceable blade |
| JP2019005827A (en) * | 2017-06-21 | 2019-01-17 | キヤノン株式会社 | Main shaft device for machine tool |
| CN108775375A (en) * | 2018-04-26 | 2018-11-09 | 广州市昊志机电股份有限公司 | A kind of electro spindle |
| CN109865848A (en) * | 2019-03-27 | 2019-06-11 | 宁波天控五轴数控技术有限公司 | A kind of electro spindle |
| CN210548153U (en) * | 2019-09-14 | 2020-05-19 | 浙江能伟科技有限公司 | Electric spindle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893891A (en) * | 2021-02-25 | 2021-06-04 | 广州市昊志机电股份有限公司 | Electric main shaft and drilling machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101204804B (en) | Dynamic tools | |
| JP5574743B2 (en) | Electric motor | |
| JP2017501081A (en) | Wheel assembly with motor and vehicle braking device | |
| CN110576197A (en) | Electric spindle | |
| CN109312794A (en) | Disc brake assembly | |
| CN210548153U (en) | Electric spindle | |
| CN102441832A (en) | Rotary tools | |
| CN205559699U (en) | Actuating mechanism and wall polisher of wall polisher | |
| CN215237937U (en) | Spindle assembly of high-speed boring machine with loosening cutter oil cylinder center water outlet | |
| CA2759533C (en) | Clutch device | |
| CN102651584B (en) | Gearmotor | |
| CN107552813B (en) | Lathe main shaft convenient to change blade | |
| CN109018174A (en) | A kind of environmental protection oneself bassinet structure | |
| CN203146543U (en) | Quick-assembly-and-disassembly nut | |
| CN208068025U (en) | A kind of graphite bearing production numerically control grinder | |
| CN201625887U (en) | Direct-drive type universal spindle head with oil pressure brake mechanism | |
| CN102218729B (en) | Power tool | |
| CN103158071B (en) | Grinder | |
| CN103025465B (en) | The roller of the diamond wire of multi-thread machine for supporting and/or lead for cutting artificial or blocks of natural stone | |
| CN202292325U (en) | Annular grinder | |
| CN103267097A (en) | Novel tensioner | |
| CN201610904U (en) | Novel friction plate type engaging and disengaging gear | |
| CN220204411U (en) | Elastic shaft sleeve | |
| CN103302316A (en) | High-speed precision pneumatic micro main shaft | |
| US1958894A (en) | Resilient driving mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |