CN107932156A - It is a kind of can automatic indexing and clamping work spindle - Google Patents
It is a kind of can automatic indexing and clamping work spindle Download PDFInfo
- Publication number
- CN107932156A CN107932156A CN201711463633.6A CN201711463633A CN107932156A CN 107932156 A CN107932156 A CN 107932156A CN 201711463633 A CN201711463633 A CN 201711463633A CN 107932156 A CN107932156 A CN 107932156A
- Authority
- CN
- China
- Prior art keywords
- brake
- shaft core
- axle sleeve
- cylinder
- work spindle
- 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
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses it is a kind of can automatic indexing and clamping work spindle, including axle sleeve, shaft core and motor, shaft core is pivotly arranged in axle sleeve, motor is sequentially connected with shaft core, further include the clamp assembly for braking shaft core and the encoder component for detecting shaft core rotational angle, clamp assembly includes the brake disc being fixedly connected with axle sleeve, the first brake piece being fixedly connected with shaft core, the first cylinder being fixedly connected with axle sleeve, and gap is left between brake disc and first brake piece；First cylinder and first brake piece are arranged on the side of brake disc, the piston rod face first brake piece of the first cylinder.When shaft core needs braking, the piston rod of first cylinder stretches out and applies pressure to first brake piece, first brake piece stress deformation is simultaneously contacted with brake disc, frictional force between first brake piece and brake disc can limit shaft core rotation, the thrust of cylinder is powerful, it is ensured that good braking effect, the part of clamp assembly are less, compact-sized, assembling is more convenient.
Description
Technical field
The invention belongs to technical field of machine tool spindle, and in particular to it is a kind of can automatic indexing and clamping work spindle.
Background technology
Existing indexing spindle generally comprises the detection device for detecting corner and the brake apparatus for braking main shaft,
Due to including part it is more, structure is often more complicated, moreover, existing brake apparatus generally uses electromagnetic braking, although
Possess higher response speed, but brake force is insufficient, and the weight of main shaft is generally heavier, after clamping workpiece, rotatory inertia into
One step increases, and braking effect is often not satisfactory.
The content of the invention
To solve the above-mentioned problems, it is an object of the invention to provide it is a kind of can automatic indexing and clamping work spindle, it is tied
Structure is compact, and brake force is powerful.
To achieve the above object, the present invention is achieved by following technical scheme：
It is of the present invention it is a kind of can automatic indexing and clamping work spindle, including axle sleeve, shaft core and motor, the axis
Core is pivotly arranged in the axle sleeve, and the motor is sequentially connected with the shaft core, further includes for braking the shaft core
The encoder component of clamp assembly and the rotational angle for detecting the shaft core, the clamp assembly include consolidating with the axle sleeve
Surely the brake disc that connects, the first brake piece being fixedly connected with the shaft core, for promoting the first brake piece so that described
The first cylinder that first brake piece is contacted with the brake disc, gap is left between the brake disc and the first brake piece；
First cylinder and the first brake piece are arranged on the side of the brake disc, and first cylinder is fixed on the axle sleeve
And first brake piece described in its piston rod face.
Further, the clamp assembly further includes the second brake block and the second gas of the opposite side arranged on the brake disc
Cylinder, the position correspondence of the first cylinder described in second cylinder and is oppositely arranged；
Second brake block is fixed on the shaft core, and second cylinder is fixed on the axle sleeve, the brake disc and
Gap, the second brake block described in the piston rod face of second cylinder are left between second brake block.
Further, the clamp assembly further includes the brake bar for being sheathed on the shaft core, and the brake bar includes
Pedestal and pressing plate, the pedestal are equipped with boss, and the first brake piece and second brake block are sheathed on the boss, described
Pedestal is connected with pressing plate to clamp the first brake piece and second brake block, and the first brake piece and described second are stopped
Gasket is equipped between car piece.
Further, present invention additionally comprises mounting base, the mounting base to be coaxially disposed and be fixedly connected on the axle sleeve
The rear end of the axle sleeve, the shaft core are pivotably connected through the mounting base and with the mounting base；The clamp assembly
It is each provided at the encoder component in the mounting base.
Further, present invention additionally comprises the clutch shaft bearing group being made of some bearings, the clutch shaft bearing group to be located at institute
State between shaft core and the mounting base.
Further, the end face of the mounting base is equipped with rear end cap.
Further, the front end of the axle sleeve is equipped with drive end bearing bracket.
Further, present invention additionally comprises the second bearing group being made of some bearings, the second bearing group to be located at institute
State between shaft core and the axle sleeve, the second bearing group is close to the front end of the axle sleeve.
Further, the grating disc and reader that the encoder component includes, the grating disc and the shaft core are coaxial
Set and be fixedly connected, the reader is fixed on the axle sleeve.
Further, the motor is located in the axle sleeve, and the rotor of the motor is coaxially disposed and consolidates with the shaft core
Fixed connection, the stator of the motor are coaxially disposed and are fixedly connected with the axle sleeve.
Compared with prior art, the beneficial effects of the invention are as follows：
The clamp assembly of the present invention includes brake disc, first brake piece and the first cylinder, when shaft core needs braking, the first gas
The piston rod of cylinder stretches out and applies pressure to first brake piece, and first brake piece stress deformation is simultaneously contacted with brake disc, and first stops
Frictional force between car piece and brake disc can limit shaft core rotation, and the thrust of cylinder is powerful, it is ensured that good braking effect
Fruit, the part of clamp assembly is less, compact-sized, and assembling is more convenient.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 be it is of the present invention it is a kind of can automatic indexing and clamping work spindle side view；
Fig. 2 is the A of Fig. 1 to revolved sectional view；
Fig. 3 is the partial enlarged view at B in Fig. 2.
In figure：
1- axle sleeves；
2- shaft cores；21- drive end bearing brackets；22- rear end caps；
3- motors；31- rotors；32- stators；
4- clamp assemblies；41- brake discs；42- first brake pieces；The first cylinders of 43-；The second brake blocks of 44-；
The second cylinders of 45-；46- brake bars；461- pedestals；4611- boss；462- pressing plates；463- gaskets；
5- encoder components；51- grating discs；52- readers；
6- mounting bases；7- clutch shaft bearing groups；8- second bearing groups.
Embodiment
The preferred embodiment of the present invention is illustrated below in conjunction with attached drawing, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
As shown in FIG. 1 to 3, it is of the present invention it is a kind of can automatic indexing and clamping work spindle, including axle sleeve 1,
Shaft core 2, motor 3, clamp assembly 4 and encoder component 5, shaft core 2 are pivotly arranged in axle sleeve 1, and motor 3 is driven with shaft core 2
Connection, motor 3 drive shaft core 2 to be rotated in axle sleeve 1.Clamp assembly 4 includes brake disc 41,42 and first cylinder of first brake piece
43, brake disc 41 is fixedly connected with axle sleeve 1, and first brake piece 42 is fixedly connected with shaft core 2, brake disc 41 and first brake piece 42
Between leave gap, therefore first brake piece 42 can be rotated with shaft core 2, and the first cylinder 43 and first brake piece 42 are arranged on and stop
The side of hull 41, the first cylinder 43 are fixed on axle sleeve 1, the piston rod face first brake piece 42 of the first cylinder 43；When shaft core 2
When needing braking, the piston rod of the first cylinder 43 stretches out and applies pressure to first brake piece 42, and 42 stress of first brake piece becomes
Shape is simultaneously contacted with brake disc 41, and the frictional force between first brake piece 42 and brake disc 41 can limit shaft core 2 and rotate.
Encoder component 5 can detect the rotational angle of shaft core 2, when rotational angle reaches preset value, encoder component 5
Motor 3 can be controlled to stop, while the piston rod of the first cylinder 43 stretches out, and first brake piece 42 is contacted with brake disc 41.
Preferably, clamp assembly 4 further includes the second brake block 44 and the second cylinder 45, the second brake block 44 and the second cylinder
45 are arranged on the opposite side of brake disc 41, the position correspondence of the second cylinder 45 and the first cylinder 43 and are oppositely arranged, correspondingly, second
Brake block 44 is fixed on shaft core 2, gap is left between 41 and second brake block 44 of brake disc, the second brake block 44 can be with shaft core
2 rotate, and the second cylinder 45 is fixed on axle sleeve 1, the second brake block of piston rod face 44 of the second cylinder 45；At this time, brake disc 41
Between 42 and second brake block 44 of first brake piece, when shaft core 2 needs braking, the first cylinder 43 and the second cylinder 45
Piston rod stretch out at the same time, respectively to 42 and second brake block 44 of first brake piece apply pressure, first brake piece 42 and second
Brake block 44 is contacted with brake disc 41, therefore frictional force bigger, braking effect are more preferable；The both sides of brake disc 41 while stress,
Due to 45 first cylinder 43 of the second cylinder position correspondence and be oppositely arranged, the stress point position pair of 41 both sides of brake disc
Claim, the first cylinder 43 grants the torque of brake disc 41 and the second cylinder 45 grants the torque of brake disc 41 and can cancel out each other, and keeps away
The bending of 41 stress deformation of brake disc is exempted from.
Preferably, it is easier to deform first brake piece 42, it is preferable that the first cylinder 43 should be close proximity to first
The edge of brake block 42, similarly, the second cylinder 45 should be close proximity to the edges of the second brake block 44.
Preferably, clamp assembly 4 further includes the brake bar 46 for being sheathed on shaft core 2, and brake bar 46 includes 461 He of pedestal
Pressing plate 462, pedestal 461 are equipped with boss 4611, and 42 and second brake block 44 of first brake piece is sheathed on boss 4611, pedestal 461
Connected with pressing plate 462,42 and second brake block 44 of first brake piece is clamped between pedestal 461 and pressing plate 462；Meanwhile the
Gasket is equipped between one brake block 42 and the second brake block 44, depending on the thickness of brake disc 41, first stops the thickness of gasket
After 42 and second brake block 44 of car piece is separated by gasket, it should keep clearance fit with brake disc 41.Preferably, pedestal 461
Between pressing plate 462 by the way of screw connection.
In order to facilitate axle sleeve 1 processing and all parts are conveniently assemblied in axle sleeve 1, the length of axle sleeve 1 should try one's best
Shorten, it is preferable that present invention additionally comprises mounting base 6, after mounting base 6 is coaxially disposed with axle sleeve 1 and is fixedly connected on axle sleeve 1
End, shaft core 2 are pivotably connected through mounting base 6 and with mounting base 6；Clamp assembly 4 and encoder component 5 are each provided at mounting base
In 6, therefore, axle sleeve 1 need not design long, be compared moreover, being assembled with encoder component clamp assembly 4 in mounting base 6
In being assemblied in axle sleeve 1, the process of assembling is simpler, and operation is more convenient.Specifically, the first cylinder 43, the second cylinder 45
It is fixedly connected with brake disc 41 with mounting base 6, and then realizes and be fixedly connected with axle sleeve 1 indirectly.
Preferably, present invention additionally comprises clutch shaft bearing group 7, clutch shaft bearing group 7 to be made of some bearings, clutch shaft bearing group 7
It is located between shaft core 2 and mounting base 6.Present invention additionally comprises second bearing group 8, second bearing group 8 is made of some bearings, and second
Bearing group 8 is located between shaft core 2 and axle sleeve 1, and second bearing group 8 is close to the front end of axle sleeve 1.
Preferably, motor 3 is located in axle sleeve 1, and the rotor 31 of motor 3 is coaxially disposed and is fixedly connected with shaft core 2, motor 3
Stator 32 be coaxially disposed and be fixedly connected with axle sleeve 1.After motor 3 starts, motor 3 without intermediate link imparts power to point
Main shaft is spent, avoids driving error, is conducive to improve machining accuracy, also, motor 3 is located at axle sleeve 1 so that whole device one
Change, structure is compacter.Preferably, motor 3 is located between clutch shaft bearing group 7 and second bearing group 8.
Preferably, the grating disc 51 and reader 52 that encoder component 5 includes, grating disc 51 are coaxially disposed simultaneously with shaft core 2
It is fixedly connected, reader 52 is fixed on axle sleeve 1, and grating disc 51 is driven with shaft core 2, and reader 52 is according to the rotational angle of grating
The rotational angle of detectable shaft core 2.In the present embodiment, grating disc 51 and reader 52 are each provided in mounting base, reader 52 with
Mounting base 6 is fixedly connected.
Preferably, present invention additionally comprises drive end bearing bracket 21 and rear end cap 22, drive end bearing bracket 21 to be arranged on the front end of axle sleeve 1, rear end
The end face for the mounting base 6 that lid 22 is set, drive end bearing bracket 21 and rear end cap 22 can play the role of sealing, prevent dust from entering installation
Inside seat 6 and axle sleeve 1.
Preferably, the pipeline passed through in axle sleeve 1 equipped with supply lines, the concrete structure of pipeline are decided according to the actual requirements.
Described in the present embodiment it is a kind of can automatic indexing and clamping work spindle other structures referring to the prior art.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, therefore
Every any modification that without departing from technical solution of the present invention content, the technical spirit according to the present invention makees above example,
Equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (10)
1. it is a kind of can automatic indexing and clamping work spindle, including axle sleeve, shaft core and motor, the shaft core be pivotly arranged on
In the axle sleeve, the motor is sequentially connected with the shaft core, it is characterised in that
Further include the clamp assembly for braking the shaft core and the encoder component for detecting the shaft core rotational angle, institute
State clamp assembly include be fixedly connected with the axle sleeve brake disc, be fixedly connected with the shaft core first brake piece, be used for
The first brake piece is promoted so that the first cylinder that the first brake piece is contacted with the brake disc, the brake disc and institute
State and leave gap between first brake piece；First cylinder and the first brake piece are arranged on the side of the brake disc,
First cylinder is fixed on first brake piece described in the axle sleeve and its piston rod face.
2. it is according to claim 1 it is a kind of can automatic indexing and clamping work spindle, it is characterised in that the clamping group
Part further includes the second brake block and the second cylinder of the opposite side arranged on the brake disc, the first cylinder described in second cylinder
Position correspondence and be oppositely arranged；
Second brake block is fixed on the shaft core, and second cylinder is fixed on the axle sleeve, the brake disc and described
Gap, the second brake block described in the piston rod face of second cylinder are left between second brake block.
3. it is according to claim 2 it is a kind of can automatic indexing and clamping work spindle, it is characterised in that the clamping group
Part further includes the brake bar for being sheathed on the shaft core, and the brake bar includes pedestal and pressing plate, and the pedestal is equipped with boss,
The first brake piece and second brake block are sheathed on the boss, and the pedestal is connected with pressing plate to clamp described first
Brake block and second brake block, are equipped with gasket between the first brake piece and second brake block.
4. it is according to claim 1 or 2 it is a kind of can automatic indexing and clamping work spindle, it is characterised in that further include
Mounting base, the mounting base are coaxially disposed with the axle sleeve and are fixedly connected on the rear end of the axle sleeve, and the shaft core runs through institute
State mounting base and be pivotably connected with the mounting base；The clamp assembly and the encoder component are each provided at the installation
In seat.
5. it is according to claim 4 it is a kind of can automatic indexing and clamping work spindle, it is characterised in that if further include by
The clutch shaft bearing group of dry bearing composition, the clutch shaft bearing group are located between the shaft core and the mounting base.
6. it is according to claim 4 it is a kind of can automatic indexing and clamping work spindle, it is characterised in that the mounting base
End face be equipped with rear end cap.
7. it is according to claim 1 it is a kind of can automatic indexing and clamping work spindle, it is characterised in that the axle sleeve
Front end is equipped with drive end bearing bracket.
8. it is according to claim 1 it is a kind of can automatic indexing and clamping work spindle, it is characterised in that if further include by
The second bearing group of dry bearing composition, the second bearing group are located between the shaft core and the axle sleeve, the second bearing
Group is close to the front end of the axle sleeve.
9. it is according to claim 1 it is a kind of can automatic indexing and clamping work spindle, it is characterised in that the encoder
The grating disc and reader that component includes, the grating disc are coaxially disposed and are fixedly connected with the shaft core, and the reader is consolidated
Due to the axle sleeve.
10. it is according to claim 1 it is a kind of can automatic indexing and clamping work spindle, it is characterised in that the motor
It is located in the axle sleeve, the rotor of the motor is coaxially disposed and is fixedly connected with the shaft core, the stator of the motor and institute
Axle sleeve is stated to be coaxially disposed and be fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711463633.6A CN107932156A (en) | 2017-12-28 | 2017-12-28 | It is a kind of can automatic indexing and clamping work spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711463633.6A CN107932156A (en) | 2017-12-28 | 2017-12-28 | It is a kind of can automatic indexing and clamping work spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107932156A true CN107932156A (en) | 2018-04-20 |
Family
ID=61939675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711463633.6A Pending CN107932156A (en) | 2017-12-28 | 2017-12-28 | It is a kind of can automatic indexing and clamping work spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107932156A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958795A (en) * | 2021-03-17 | 2021-06-15 | 江苏工大金凯高端装备制造有限公司 | Air floatation main shaft with automatic clamping device and high-precision position feedback device |
| CN113400069A (en) * | 2021-05-06 | 2021-09-17 | 北京科技大学 | Hydraulic double-elastomer deformation type locking device |
| CN114619345A (en) * | 2022-03-25 | 2022-06-14 | 湖南宇环精密制造有限公司 | Composite grinding machine |
| CN114713862A (en) * | 2022-04-21 | 2022-07-08 | 深圳市爱贝科精密工业股份有限公司 | Built-in brake mechanism for lathe spindle |
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| TW566266U (en) * | 2002-11-29 | 2003-12-11 | Yi-Jiun Lai | Improved brake piece structure for index plate |
| JP2008062316A (en) * | 2006-09-05 | 2008-03-21 | Nakamura Tome Precision Ind Co Ltd | Spindle braking device of lathe and workpiece machining method |
| TWM380190U (en) * | 2009-12-24 | 2010-05-11 | Yeong Chin Machinery Ind Co Ltd | Direct-drive universal spindle head with hydraulic brake mechanism |
| CN202224996U (en) * | 2011-06-17 | 2012-05-23 | 浙江日发数码精密机械股份有限公司 | Brake gear for spindle of rotary tailstock |
| CN203579293U (en) * | 2013-11-12 | 2014-05-07 | 浙江嘉湖机床有限公司 | Spindle brake system |
| CN204164223U (en) * | 2014-09-10 | 2015-02-18 | 广州市昊志机电股份有限公司 | The braking device of rotor |
| CN204621562U (en) * | 2015-05-14 | 2015-09-09 | 江苏新瑞重工科技有限公司 | 4th axle torque motor high-speed numeric control turntable |
| CN205587963U (en) * | 2016-05-03 | 2016-09-21 | 泉州市日旭精密机械有限公司 | Head sways |
| CN205629976U (en) * | 2016-04-28 | 2016-10-12 | 广州市昊志机电股份有限公司 | Rotary worktable's brake mechanism |
| CN206614041U (en) * | 2017-03-15 | 2017-11-07 | 东莞百锐数控机床有限公司 | A kind of turnning and milling compound electric spindle |
| CN207840153U (en) * | 2017-12-28 | 2018-09-11 | 广州群创数控机床有限公司 | It is a kind of can automatic indexing and clamping work spindle |
-
2017
- 2017-12-28 CN CN201711463633.6A patent/CN107932156A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW566266U (en) * | 2002-11-29 | 2003-12-11 | Yi-Jiun Lai | Improved brake piece structure for index plate |
| JP2008062316A (en) * | 2006-09-05 | 2008-03-21 | Nakamura Tome Precision Ind Co Ltd | Spindle braking device of lathe and workpiece machining method |
| TWM380190U (en) * | 2009-12-24 | 2010-05-11 | Yeong Chin Machinery Ind Co Ltd | Direct-drive universal spindle head with hydraulic brake mechanism |
| CN202224996U (en) * | 2011-06-17 | 2012-05-23 | 浙江日发数码精密机械股份有限公司 | Brake gear for spindle of rotary tailstock |
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| CN204164223U (en) * | 2014-09-10 | 2015-02-18 | 广州市昊志机电股份有限公司 | The braking device of rotor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112958795A (en) * | 2021-03-17 | 2021-06-15 | 江苏工大金凯高端装备制造有限公司 | Air floatation main shaft with automatic clamping device and high-precision position feedback device |
| CN112958795B (en) * | 2021-03-17 | 2023-09-08 | 江苏工大金凯高端装备制造有限公司 | Air floatation spindle with automatic clamping device and high-precision position feedback device |
| CN113400069A (en) * | 2021-05-06 | 2021-09-17 | 北京科技大学 | Hydraulic double-elastomer deformation type locking device |
| CN113400069B (en) * | 2021-05-06 | 2022-09-13 | 北京科技大学 | Hydraulic double-elastomer deformation type locking device |
| CN114619345A (en) * | 2022-03-25 | 2022-06-14 | 湖南宇环精密制造有限公司 | Composite grinding machine |
| CN114713862A (en) * | 2022-04-21 | 2022-07-08 | 深圳市爱贝科精密工业股份有限公司 | Built-in brake mechanism for lathe spindle |
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