CN105382280B - Core type electric spindle of lathe is walked in a kind of automatic locking of reloading - Google Patents
Core type electric spindle of lathe is walked in a kind of automatic locking of reloading Download PDFInfo
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- CN105382280B CN105382280B CN201510979118.8A CN201510979118A CN105382280B CN 105382280 B CN105382280 B CN 105382280B CN 201510979118 A CN201510979118 A CN 201510979118A CN 105382280 B CN105382280 B CN 105382280B
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- bearing
- main shaft
- locking
- hand member
- sleeve
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention belongs to Digit Control Machine Tool part, disclose a kind of automatic locking of reloading and walk core type electric spindle of lathe, automatically core type electric spindle of lathe is walked in the locking of reloading includes electro spindle part components, clamp system, on-line dynamic balancing mechanism, automatic material changing mechanism, automatic locking mechanism, connect transducer drive, external pressure oil, pass through clamp system, automatic material changing mechanism, automatic locking mechanism, realize that the automatic of workpiece is reloaded and principal shaft locking function, by current control on-line dynamic balancing mechanism, the on-line dynamic balancing function of main shaft is realized.Automatically it is rational in infrastructure compact that core type electric spindle of lathe is walked in the locking of reloading, main shaft have reload automatically, auto lock, dynamic balancing simple and fast and the characteristics of high automaticity.
Description
Technical field
The invention belongs to Digit Control Machine Tool part, core type electric spindle of lathe is walked in more particularly to a kind of automatic locking of reloading.
Background technology
At present, walking the electric lathe spindle replacement mechanical main shaft of core type, just Digit Control Machine Tool is widely used at home, walks core type lathe
Electro spindle is the critical function part of Digit Control Machine Tool, but walk core type electric spindle of lathe reload and locking uses mechanical mechanism, knot
Structure is complicated, and driving-chain is more, and electro spindle overall structure is huge, and efficiency is low, electro spindle high speed operation for a period of time after, main shaft, which is safeguarded, to be needed
Dismantle dynamic balancing.
The content of the invention
The present invention for it is existing walk the deficiency that exists of core type electric spindle of lathe technology and defect there is provided a kind of automatic lock that reloads
Core type electric spindle of lathe is tightly walked, realization is reloaded and auto lock automatically, and on-line dynamic balancing, main shaft precision is high, long lifespan, reliability
It is high.
The technical solution adopted in the present invention：Core type electric spindle of lathe, including preceding nut, master are walked in a kind of automatic locking of reloading
Axle, on-line dynamic balancing mechanism, front bearing retainer, front-end bearing pedestal, housing, water jacket, stator component, rear bearing block, gland, adapter sleeve,
Automatic material changing mechanism, automatic locking mechanism, rear nut, rear bearing group, rotor part, fore bearing group, preceding sealing ring, compression spiral shell
Cap, the rotor part, which is set, to be fixed in the middle part of main shaft, and the main shaft is hollow structure, and the left front end external diameter of main shaft is provided with thread segment
Nut before installing, the left front end inner chamber of main shaft is provided with clamp system, and the right-hand member of main shaft is provided with logical keyway, in rotor part periphery
Stator component is provided with, the stator component, which is set, is fixed on middle part in housing, and cooling is provided between stator component and housing
The water jacket of effect, the front-end bearing pedestal, rear bearing block are fixedly set in housing left end, right-hand member, set and install in the front-end bearing pedestal
There is fore bearing group, the front-end bearing pedestal left end sets and is provided with front bearing retainer, set in the front bearing retainer and sealing function is installed
Preceding sealing ring, is provided with on-line dynamic balancing mechanism in the left end setting of front bearing retainer and is fixed with clamping nut, the rear bearing
Set in seat and rear bearing group is installed, the bearing group right-hand member is provided with gland and compresses and fixed with rear nut, the rear bearing block is right
End setting is provided with adapter sleeve, and the adapter sleeve right-hand member sets and is provided with automatic material changing mechanism, and the automatic material changing mechanism right-hand member is set
Automatic locking mechanism is installed.
The clamp system includes chuck, sleeve, spring, and the sleeve, which is set, to be arranged in main shaft left end inner chamber, the set
Tube inner chamber, which is set, installs spring and chuck, and sleeve stress can horizontally slip in main shaft left end inner chamber, when sleeve right-hand member is by thrust,
Slip clamp grips set to sleeve to the left, and chuck stress clamps workpiece, when sleeve right-hand member is not by thrust, effect of the sleeve in spring tension
Under it is sliding to the right unclamp chuck, chuck does not stress release workpiece.
The on-line dynamic balancing mechanism includes balancing loop, dynamic blancer, driver, and fore bearing, the driver is set
The left end being somebody's turn to do installed in fore bearing, the left end of the driver, which is set, is provided with balancing loop, and the inner chamber of the balancing loop sets peace
Equipped with fore bearing, the fore bearing is set installed in the front end of main shaft, and the external diameter of balancing loop, which is set, is provided with dynamic blancer, electric current
Certain electromagnetic force is produced by driver, causes balancing loop relative main to rotate certain angle by bearing, master is eliminated
The computing ballance correction of axle.
The automatic material changing mechanism includes reload oil cylinder, bearing block, piston, bonnet, piston push jack, preceding push jack, sliding sleeve, axle
Hold, locking nut, promote pipe, the promotion pipe, which is set, is arranged on inner chamber in the middle part of main shaft, and the promotion pipe right-hand member contacts with preceding push jack,
The oil cylinder left end that reloads is connected with adapter sleeve, and the oil cylinder right-hand member that reloads, which is set, is provided with bonnet, and the bonnet is with reloading in oil cylinder
Set between portion's an actor's rendering of an operatic tune and piston is installed, the piston left end sets and is provided with piston push jack, the piston push jack left end and bearing block
An actor's rendering of an operatic tune sets and is provided with bearing inside contact, the bearing block, and the bearing inner surface, which is set, is provided with sliding sleeve and solid with locking nut
Fixed, the sliding sleeve inner surface coordinates with main shaft right-hand member outer surface to be slided, and sliding sleeve right-hand member sets and is provided with preceding push jack, and the preceding push jack is set
It is sleeved in the logical keyway of main shaft, pressure oil enters bonnet by the axial oil duct of locking cylinder and reached between piston and bonnet
Oil pocket, promotes piston, piston push jack, bearing block, sliding sleeve, preceding push jack, bearing, locking nut, promotion pipe to slide to the left.
The automatic locking mechanism includes locking cylinder, transition conduit, bushing, elastic tube, and the locking cylinder is provided with axle
To and radial direction oil, the locking cylinder internal diameter sets hollow structure Matching installation to have bushing, outside the bushing inner diameter and main shaft right-hand member
Footpath is matched, and the flexible pipe of symmetrical grooves Matching installation at two is set in the middle part of the bushing, and the external diameter of the elastic tube sets Matching installation
There is transition conduit, annular groove is provided with the middle part of the transition conduit, pressure oil enters transition conduit groove by locking cylinder radial direction oil
In, tight elastic tube is forced by the elastic expanding of transition conduit, elastic tube stress deformation is contacted with main shaft external diameter surface and is adjacent to.
The beneficial effects of the invention are as follows：1. reloaded automatically using oil gear, it is simple in construction；2. using oil pressure lock
Tight main shaft high-speed rotation, braking flattening effect is good；3. using on-line dynamic balancing, principal axis balance is good, smooth running, long lifespan 4.
Main shaft compact overall structure, automaticity is high, and production efficiency is high.
Brief description of the drawings
Fig. 1 walks the cross-sectional view of core type electric spindle of lathe for a kind of automatic locking of reloading of the present invention.
Label 1 is chuck in figure, and 2 be preceding nut, and 3 be main shaft, and 4 be sleeve, and 5 be balancing loop, and 6 be dynamic blancer, and 7 are
Driver, 8 be front bearing retainer, and 9 be front-end bearing pedestal, and 10 be housing, and 11 be water jacket, and 12 be stator component, and 13 be rear bearing block, 14
It is adapter sleeve for gland, 15,16 be the oil cylinder that reloads, and 17 be bearing block, and 18 be piston, and 19 be bonnet, and 20 be locking cylinder, and 21 are
Transition conduit, 22 be bushing, and 23 be elastic tube, and 24 be piston push jack, and 25 be preceding push jack, and 26 be sliding sleeve, and 27 be bearing, and 28 be locking
Nut, 29 be rear nut, and 30 be rear bearing group, and 31 is promote pipe, and 32 be rotor part, and 33 be fore bearing group, and 34 be preceding sealing
Ring, 35 be fore bearing, and 36 be spring, and 37 be clamping nut.
Embodiment
Core type electric spindle of lathe is walked with reference to Fig. 1 and by specific embodiment to automatic locking of reloading of the invention
It is detailed further.
Shown in Fig. 1, core type electric spindle of lathe is walked in the automatic locking of reloading of one kind of the invention, including preceding nut 2, main shaft 3, preceding
Bearing cap 8, front-end bearing pedestal 9, housing 10, water jacket 11, stator component 12, rear bearing block 13, gland 14, adapter sleeve 15, rear nut
29th, rear bearing group 30, rotor part 32, fore bearing group 33, preceding sealing ring 34, clamping nut 37, on-line dynamic balancing mechanism, automatic
Refueling agency, automatic locking mechanism, the rotor part 32, which is set, is fixed on the middle part of main shaft 3, and the main shaft is hollow structure, main shaft
3 left front end external diameters are provided with nut 2 before thread segment is installed, and the left front end inner chamber of main shaft 3 is provided with clamp system, the right-hand member of main shaft 3
Logical keyway is provided with, the periphery of rotor part 32 is provided with stator component 12, during stator component setting is fixed in housing 10
Portion, is provided for the water jacket 11 of cooling, the front-end bearing pedestal 9, rear bearing block 13 are fixed between stator component 12 and housing 10
It is sleeved on to set in the left end of housing 10, right-hand member, the front-end bearing pedestal and fore bearing group 33 is installed, the front-end bearing pedestal left end, which is set, is installed
There is front bearing retainer 8, the preceding sealing ring 34 for being provided with sealing function is set in the front bearing retainer, set in the left end of front bearing retainer 8
On-line dynamic balancing mechanism is installed and fixed with clamping nut 37, is set in the rear bearing block and rear bearing group 30 is installed, should
Bearing group right-hand member is provided with gland 14 and compresses and fixed with rear nut 29, and the rear bearing block right-hand member sets and is provided with adapter sleeve 15,
The adapter sleeve right-hand member sets and is provided with automatic material changing mechanism, and the automatic material changing mechanism right-hand member sets and is provided with automatic locking mechanism.
The clamp system includes chuck 1, sleeve 4, spring 36, and the sleeve 4, which is set, is arranged on the left end inner chamber of main shaft 3
In, the barrel bore, which is set, installs spring 36 and chuck 1, and the stress of sleeve 4 can horizontally slip in the left end inner chamber of main shaft 3, sleeve 4
When right-hand member is by thrust, slip clamp grips set 1 to sleeve 4 to the left, and the stress of chuck 1 clamps workpiece, when the right-hand member of sleeve 4 is not by thrust, set
Cylinder 4 is sliding to the right in the presence of the tension of spring 36 to unclamp chuck 1, and chuck 1 does not stress release workpiece.
The on-line dynamic balancing mechanism includes balancing loop 5, dynamic blancer 6, driver 7, fore bearing 35, the driver
7 set the left end installed in front bearing retainer 8, and the left end of the driver, which is set, is provided with balancing loop 5, the inner chamber of the balancing loop
Setting is provided with fore bearing 35, and the fore bearing is set installed in the front end of main shaft 3, the external diameter of balancing loop 5 set be provided with it is dynamic
Balancer 6, electric current produces certain electromagnetic force by driver 7, causes the relative main of balancing loop 5 to rotate certain by bearing
Angle, eliminate main shaft 3 computing ballance correction.
The automatic material changing mechanism include reloading oil cylinder 16, bearing block 17, piston 18, bonnet 19, piston push jack 24, preceding push away
Piece 25, sliding sleeve 26, bearing 27, locking nut 28, promotion pipe 31, the promotion pipe 31, which is set, is arranged on the middle part inner chamber of main shaft 3, should
Pipe right-hand member is promoted to be contacted with preceding push jack 25, the left end of oil cylinder 16 that reloads is connected with adapter sleeve, the oil cylinder right-hand member that reloads sets peace
Set equipped with bonnet 19, between the bonnet and the inside an actor's rendering of an operatic tune of oil cylinder 16 that reloads and piston 18 is installed, the piston left end, which is set, to be installed
There is piston push jack 24, the piston push jack left end is contacted with bearing block 17, an actor's rendering of an operatic tune sets and is provided with bearing 27 inside the bearing block, should
Bearing inner surface is set and is provided with sliding sleeve 26 and is fixed with locking nut 28, and the sliding sleeve inner surface is matched somebody with somebody with the right-hand member outer surface of main shaft 3
Close and slide, the right-hand member of sliding sleeve 26, which is set, is provided with preceding push jack 25, and the preceding push jack, which is set, to be sleeved in the logical keyway of main shaft 3, pressure oil
The oil pocket entered by the axial oil duct of locking cylinder 20 between the arrival piston 18 of bonnet 19 and bonnet 19, promotes piston 18, lives
Plug push jack 24, bearing block 27, sliding sleeve 26, preceding push jack 25, bearing 27, locking nut 28, promotion pipe 31 are slided to the left.
The automatic locking mechanism includes locking cylinder 20, transition conduit 21, bushing 22, elastic tube 23, the locking cylinder
Be provided with axially and radially oil duct, the locking cylinder internal diameter set hollow structure Matching installation have bushing 22, the bushing inner diameter with
The right-hand member external diameter of main shaft 3 is matched, and the flexible pipe 23 of symmetrical grooves Matching installation, the external diameter of the elastic tube at two are set in the middle part of the bushing
Set Matching installation to have transition conduit 21, be provided with annular groove in the middle part of the transition conduit, pressure oil passes through locking cylinder radial direction oil
Into in the annular groove of transition conduit 21, elastic tube 23, bullet in the central slot of clamping hub 22 are forced by the elastic expanding of transition conduit 21
The property stress deformation of pipe 23, the inside diameter surface of elastic tube 23 is contacted with the external diameter surface of main shaft 3 and is adjacent to.
The use process or working condition of the present invention：First, external frequency converter, passes through stator component 12 and rotor part 32
The high-speed rotation of main shaft 3 of the present invention is driven, it is necessary to which when reloading, the pressure oil provided by external hydraulic station passes through the footpath of locking cylinder 20
Enter to oil duct in the annular groove of transition conduit 21, elastic tube in the central slot of clamping hub 22 is forced by the elastic expanding of transition conduit 21
23, the stress deformation of elastic tube 23, the inside diameter surface of elastic tube 23 is contacted with the external diameter surface of main shaft 3 and is adjacent to, and locks the master run at high speed
Axle, secondly, the pressure oil provided by external hydraulic station reaches piston 18 by the axial oil duct of locking cylinder 20 into bonnet 19
With the oil pocket between bonnet 19, piston 18, piston push jack 24, bearing block 17, sliding sleeve 26, preceding push jack 25, bearing 27, locking are promoted
Nut 28 is slided to the left together, promotes pipe 31 to be moved to the left by preceding push jack 25, and sleeve 4 is promoted the thrust of pipe 31 by right-hand member,
Slip clamp grips set 1 to sleeve 4 to the left, and the stress of chuck 1 clamps workpiece, after work pieces process is finished, pressure oil reduction pressure, sleeve 4
When not promoted 31 thrust of pipe by right-hand member, sleeve 4 is sliding to the right in the presence of the tension of spring 36 to unclamp chuck 1, and chuck 1 does not stress pine
Go into operation part, workpiece replacing.
Walk core type electric spindle of lathe to work after a period of time, new amount of unbalance is produced, it is necessary to during dynamic balancing, by external
Power supply, electric current causes the relative main 3 of balancing loop 5 to rotate certain angle by bearing 35 by the certain electromagnetic force of driver 7
Degree, eliminates the computing ballance correction of main shaft 3, main shaft 3 is recovered normal operating conditions.
Claims (5)
1. core type electric spindle of lathe, including preceding nut, main shaft, on-line dynamic balancing mechanism, fore bearing are walked in a kind of automatic locking of reloading
Lid, front-end bearing pedestal, housing, water jacket, stator component, rear bearing block, gland, adapter sleeve, automatic material changing mechanism, auto lock machine
Structure, rear nut, rear bearing group, rotor part, fore bearing group, preceding sealing ring, clamping nut, it is characterised in that the rotor portions
Part, which is set, to be fixed in the middle part of main shaft, and the main shaft is hollow structure, and the left front end external diameter of main shaft is provided with nut before thread segment is installed, main
The left front end inner chamber of axle is provided with clamp system, and the right-hand member of main shaft is provided with logical keyway；Rotor part periphery is provided with stator department
Part, the stator component, which is set, is fixed on middle part in housing, and the water jacket of cooling is provided between stator component and housing；It is described
Front-end bearing pedestal, rear bearing block are fixedly set in housing left end, right-hand member, set in the front-end bearing pedestal and are provided with fore bearing group, before this
Bearing block left end sets and is provided with front bearing retainer, the preceding sealing ring for being provided with sealing function is set in the front bearing retainer, in front axle
The left end setting for holding lid is provided with on-line dynamic balancing mechanism and fixed with clamping nut, is set in the rear bearing block after being provided with
Bearing group, the bearing group right-hand member is provided with gland and compresses and fixed with rear nut, and the rear bearing block right-hand member sets and is provided with connection
Set, the adapter sleeve right-hand member sets and is provided with automatic material changing mechanism, and the automatic material changing mechanism right-hand member sets and is provided with auto lock machine
Structure.
2. core type electric spindle of lathe is walked in automatic locking of reloading according to claim 1, it is characterised in that：The clamp system includes
Chuck, sleeve, spring, the sleeve, which is set, to be arranged in main shaft left end inner chamber, and the barrel bore, which is set, installs spring and chuck,
Sleeve stress can horizontally slip in main shaft left end inner chamber, when sleeve right-hand member is by thrust, and slip clamp grips set, chuck to sleeve to the left
Stress clamps workpiece, when sleeve right-hand member is not by thrust, and sleeve is sliding to the right in the presence of spring tension to unclamp chuck, chuck not by
Power unclamps workpiece.
3. core type electric spindle of lathe is walked in automatic locking of reloading according to claim 1, it is characterised in that：The on-line dynamic balancing machine
Structure includes balancing loop, dynamic blancer, driver, and fore bearing, the driver sets the left end installed in front bearing retainer, the drive
The left end of dynamic device, which is set, is provided with balancing loop, and the inner chamber of the balancing loop, which is set, is provided with fore bearing, and the fore bearing sets peace
Mounted in the front end of main shaft, the external diameter of balancing loop, which is set, is provided with dynamic blancer, and electric current produces certain electromagnetism by driver
Power, causes balancing loop relative main to rotate certain angle by bearing, eliminates the computing ballance correction of main shaft.
4. core type electric spindle of lathe is walked in automatic locking of reloading according to claim 1, it is characterised in that：The automatic material changing mechanism
It is described including the oil cylinder that reloads, bearing block, piston, bonnet, piston push jack, preceding push jack, sliding sleeve, bearing, locking nut, promotion pipe
Promote pipe to set and be arranged on inner chamber in the middle part of main shaft, the promotion pipe right-hand member is contacted with preceding push jack, and the oil cylinder left end that reloads is with being connected
Set connection, the oil cylinder right-hand member that reloads, which is set, is provided with bonnet, is set inside the bonnet and the oil cylinder that reloads between an actor's rendering of an operatic tune and is provided with work
Plug, the piston left end is set and is provided with piston push jack, and the piston push jack left end is contacted with bearing block, and an actor's rendering of an operatic tune is set inside the bearing block
Put and bearing is installed, the bearing inner surface sets and is provided with sliding sleeve and fixed with locking nut, the sliding sleeve inner surface is right with main shaft
Hold outer surface to coordinate to slide, sliding sleeve right-hand member sets and is provided with preceding push jack, the preceding push jack, which is set, to be sleeved in the logical keyway of main shaft, is pressed
Power oil enters bonnet by the axial oil duct of locking cylinder and reaches oil pocket between piston and bonnet, promote piston, piston push jack,
Bearing block, sliding sleeve, preceding push jack, bearing, locking nut, promotion pipe are slided to the left.
5. core type electric spindle of lathe is walked in automatic locking of reloading according to claim 1, it is characterised in that：The automatic locking mechanism
Including locking cylinder, transition conduit, bushing, elastic tube, the locking cylinder is provided with axially and radially oil duct, in the locking cylinder
Footpath sets hollow structure Matching installation to have bushing, and the bushing inner diameter is matched with main shaft right-hand member external diameter, is set in the middle part of the bushing at two
The flexible pipe of symmetrical grooves Matching installation, the external diameter of the elastic tube sets Matching installation to have transition conduit, is set in the middle part of the transition conduit
There is annular groove, pressure oil is entered in transition conduit groove by locking cylinder radial direction oil, forced by the elastic expanding of transition conduit
Tight elastic tube, elastic tube stress deformation is contacted with main shaft external diameter surface and is adjacent to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510979118.8A CN105382280B (en) | 2015-12-24 | 2015-12-24 | Core type electric spindle of lathe is walked in a kind of automatic locking of reloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510979118.8A CN105382280B (en) | 2015-12-24 | 2015-12-24 | Core type electric spindle of lathe is walked in a kind of automatic locking of reloading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105382280A CN105382280A (en) | 2016-03-09 |
| CN105382280B true CN105382280B (en) | 2017-07-28 |
Family
ID=55415416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510979118.8A Expired - Fee Related CN105382280B (en) | 2015-12-24 | 2015-12-24 | Core type electric spindle of lathe is walked in a kind of automatic locking of reloading |
Country Status (1)
| Country | Link |
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| CN (1) | CN105382280B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965037B (en) * | 2016-04-29 | 2017-11-17 | 宁波海天精工股份有限公司 | A kind of high-speed main spindle four sides dynamic balancing implementation method |
| CN106493393A (en) * | 2016-12-26 | 2017-03-15 | 东莞市台科精密机械有限公司 | A kind of spindle motor unit of numerical control rip cutting turnning and milling complex centre application |
| CN113084208A (en) * | 2021-04-09 | 2021-07-09 | 云南春林珠精密机床制造有限公司 | Telescopic and locking precision machine tool spindle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19637256A1 (en) * | 1996-09-13 | 1998-03-19 | Index Werke Kg Hahn & Tessky | Workpiece spindle device for a machine tool |
| CN201405071Y (en) * | 2009-05-18 | 2010-02-17 | 胡惜时 | High-speed electric spindle |
| CN102328100B (en) * | 2011-09-16 | 2013-12-04 | 安阳斯普机械有限公司 | Electric main shaft for worm gear machine cutter |
| CN203664679U (en) * | 2014-01-15 | 2014-06-25 | 深圳市硕方精密机械有限公司 | Discharging device for head-sliding type lathe |
| CN204584293U (en) * | 2015-01-22 | 2015-08-26 | 泰安海纳轴研科技有限公司 | Electrocardio main shaft is walked for Digit Control Machine Tool |
| CN104889425B (en) * | 2015-06-11 | 2017-05-17 | 浙江日发精密机械股份有限公司 | High speed spindle box structure |
| CN205200563U (en) * | 2015-12-24 | 2016-05-04 | 安阳工学院 | Automatic core type lathe electricity main shaft is walked in locking of reloading |
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2015
- 2015-12-24 CN CN201510979118.8A patent/CN105382280B/en not_active Expired - Fee Related
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| CN105382280A (en) | 2016-03-09 |
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Granted publication date: 20170728 Termination date: 20181224 |