CN107571075A - The high-speed main spindle and assembly method of a kind of CNC horizontal milling ＆ boring machine - Google Patents
The high-speed main spindle and assembly method of a kind of CNC horizontal milling ＆ boring machine Download PDFInfo
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- CN107571075A CN107571075A CN201710972489.2A CN201710972489A CN107571075A CN 107571075 A CN107571075 A CN 107571075A CN 201710972489 A CN201710972489 A CN 201710972489A CN 107571075 A CN107571075 A CN 107571075A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
A kind of high-speed main spindle and assembly method applied to CNC horizontal milling ＆ boring machine, it is characterized in that main shaft is by three groups of bearings, front-end of spindle, middle part are respectively sleeved on support set endoporus front portion, rear portion by angular contact ball bearing, there is boring axle in main shaft, rear-end of spindle is sleeved on main spindle box body by deep groove ball bearing；Before assembling respectively before match grinding main shaft, middle part periphery, main shaft is smaller than angular contact ball bearing inner ring actual size by 0 to 0.004mm respectively after match grinding；Be sequentially loaded into two bearings and part, by measuring two angular contact ball bearing outer ring sizes, then match grinding support set endoporus, front portion should, rear portion bigger 0.002~0.008mm than angular contact ball bearing outer shroud actual size should bigger than middle (center) bearing outer shroud 0.015 to 0.022mm.A diameter of 130mm maximum speed of spindle can be made, and to 3000r/min, maximum speed operates 4 hours main shaft temperature≤33 DEG C, temperature rise≤10 DEG C, and machining accuracy is above national standard.
Description
Technical field
The present invention relates to Digit Control Machine Tool manufacturing field, the main shaft and its associated support of CNC horizontal milling ＆ boring machine are especially embodied in
The structure and assembly method of coupling part.
Background technology
CNC horizontal milling ＆ boring machine is widely used in all kinds of universal machine processing industries, but with the development of manufacturing technology
And the extensive use of high-speed cutting, user also carry therewith to the speed of mainshaft of CNC horizontal milling ＆ boring machine and the demand of stability
It is high.The speed of mainshaft is low, High-speed machining when low precision, stability difference is the common fault of CNC horizontal milling ＆ boring machine, trace it to its cause on the one hand
Centrifugal action when being main shaft high speed rotation causes main shaft and bearing intermolecular forces excessive, and bearing stand under load is uneven and causes bearing to damage
It is bad；On the other hand be produced when main shaft runs at high speed substantial amounts of heat cause main shaft in itself and main shaft bearing produce thermal deformation and then
There is main shaft stuck phenomenon.The high rotating speed of CNC horizontal milling ＆ boring machine main shaft, high rigidity, high accuracy, high stability are always to be lifted
The key technology difficulty of product quality.
The content of the invention
It is an object of the invention to provide a kind of high-speed main spindle and assembly method applied to CNC horizontal milling ＆ boring machine, solves existing
There is the product speed of mainshaft not increase, the spindle heat generation that runs at high speed is serious, and main shaft bearing serious wear, useful life is short, main shaft compared with
Machining accuracy is undesirable during high rotating speed processing waits series of problems.
A kind of high-speed main spindle of CNC horizontal milling ＆ boring machine, it is characterised in that main shaft is led to by three groups of bearings, front-end of spindle
Cross angular contact ball bearing be sleeved on support set endoporus front portion, angular contact ball bearing inner ring respectively by the shaft shoulder of main shaft, inner spacing collar,
Spacer, locking nut are positioned afterwards, and angular contact ball bearing outer shroud is determined by the shoulder of blind flange, outer separator, support set respectively
Position；The middle part of main shaft is sleeved on support set endoporus rear portion by middle angular contact ball bearing, and middle angular contact ball bearing inner ring passes through respectively
Preceding spacer and long spacer position, middle angular contact ball bearing outer shroud delocalization, are cased with boring axle inside main shaft, rear-end of spindle passes through zanjon
Ball bearing is sleeved on main spindle box body；The assembly method of main shaft and support set：, be according to two angular contact ball bearing inner ring before assembling
Actual size, match grinding spindle front, middle part periphery are accordingly at cooperation respectively, and spindle front, middle part peripheral dimension are distinguished after match grinding
It is smaller than angular contact ball bearing inner ring actual size by 0 to 0.004mm；Filled after the completion of main shaft match grinding according to first anterior, rear middle part order
Enter bearing and each several part part, respectively tighten locking nut and back of the body cap, now measure two angular contact balls using survey tool
The outer ring size of bearing, according to the corresponding mating part of size match grinding support set endoporus of measurement, match grinding rear support covers anterior endoporus
Mating part should answer than inner hole part in the middle part of angular contact ball bearing outer shroud actual size big 0.002 to 0.008mm, support set
The angular contact ball bearing outer shroud actual size big 0.015 to 0.022mm than in；It is after the completion of support set match grinding, spindle mounted is good
Middle angular contact ball bearing part is dismantled, and only retains angular contact ball bearing, inner spacing collar, outer separator, the rear spacer of front-end of spindle
And locking nut, then by two key screws the relevant position for being connected on main shaft, then by main shaft portion from support set front aperture
Load support set, forward flange cover screw is tightened in support set front end, finally by the middle angular contact ball bearing under dismantling and respectively
Part is attached on main shaft in order from rear-end of spindle, and back of the body cap is tightened, and boring axle turns along two symmetrical long keyway alignment keys
Enter inside main shaft.
The present invention distinguishing feature be：
Main shaft is provided with circumferential helical by three groups of bearings outside support set, can be introduced from outside into cooling oil progress
Heat shifts, and ensures that heat caused by front-end of spindle angular contact ball bearing long time running is pulled away, does not cause thermal expansion；It is main
Orifice ring rear portion in support set is sleeved on by middle angular contact ball bearing in the middle part of axle, seam is left in middle angular contact ball bearing outer shroud both sides
Gap, ensure that rotation angular contact ball bearing has enough expansion rooms to main shaft at a high speed.Rear-end of spindle passes through deep groove ball bearing set
On main spindle box body, gap is left in deep groove ball bearing outer shroud both sides, ensures that deep groove ball bearing has when main shaft rotates at a high speed
Enough expansion rooms, the arrangements of three groups of bearings can effectively reduce when main shaft rotates at a high speed the axle because of caused by centrifugal action
Phenomena such as withstanding forces excessive, unbalance loading.
Spindle front and middle part angular contact ball bearing use grease lubrication, and its encapsulation process is：Fore angular contact ball
The labyrinth structure dustproof and waterproof that bearing passes through front-end of spindle lid；The encapsulation process at middle part is that oil shield handle is connected on blind flange, method
Blue lid, oil scraper ring, oil shield composition labyrinth sealing, prevent the lubricating oil of main drive gear from entering angular contact ball axle in the middle part of main shaft
Hold and water down lubricating grease and cause bearing lubrication bad；Deep groove ball bearing uses thin oil lubricant with gear, and deep groove ball bearing rear portion has
Oil scraper ring, sealing ring and the end cap that is connected on main spindle box is formed labyrinth seal structure.
The assembly method of main shaft and support set：Before main shaft assembles with angular contact ball bearing, according to angular contact ball bearing inner ring
Actual size elder generation match grinding main shaft is accordingly at cooperation, and size is smaller than angular contact ball bearing inner ring actual size after main shaft match grinding.Main shaft
Load bearing and each several part part according to preceding, middle order after the completion of match grinding, respectively tighten locking nut and back of the body cap, now utilize survey
Amount instrument measures anterior and middle part angular contact ball bearing outer ring size, is accordingly coordinated according to the size match grinding support set of measurement
Part, should be bigger than angular contact ball bearing outer shroud actual size after match grinding.At support set and anterior angular contact ball bearing cooperation
Outside is provided with circumferential helical, carries out heat transfer to be introduced from outside into cooling oil, therefore fit clearance is compared with middle part angular contact ball
Small at bearing, fit clearance is slightly larger at middle angular contact ball bearing ensure that main shaft rotates at a high speed the hot swollen of angular contact ball bearing
Swollen space, inner and outer ring tension is avoided to cause bearing stuck phenomenon.After the completion of the technology of the present invention, make a diameter of 130mm main shaft most
High rotating speed is up to 3000r/min, and main shaft operates 4 hours main shaft temperatures with maximum speed and is no more than 33 degrees Celsius, and temperature rise is no more than
10 degrees Celsius, spindle thermal is no more than 0.02mm, and cutting sample items machining accuracy is above national standard.In present invention warp
The CNC horizontal milling ＆ boring machine PBC130 probationary certificates of prompt lathe Co., Ltd, it is a kind of rational in infrastructure, dependable performance and simultaneously
Take into account high rotating speed, high rigidity, high accuracy, the main shaft of high stability.
Brief description of the drawings
Fig. 1 is the main axle structure schematic diagram of the present invention；
Fig. 2 is the diagrammatic cross-section of key connection.
Embodiment
Piece mark in Fig. 1,2:1 main shaft；2 forward flange lids；3 support sets；4 inner spacing collars；5 outer separators；6 angular contact ball axles
Hold；The rear spacer of 7 angular contact ball bearings 6；8 locking nuts；The preceding spacer of angular contact ball bearing 10 in 9；Angular contact ball axle in 10
Hold；11 rear flange lids；12 oil scraper rings；13 oil shields；The long spacer of angular contact ball bearing 10 in 14；15 keys；16 main drive gears；
The short spacer of angular contact ball bearing 10 in 17；18 deep groove ball bearings；19 sealing rings；20 back of the body cap；21 boring axles.
The high-speed main spindle structure of this CNC horizontal milling ＆ boring machine is shown in accompanying drawing 1, Fig. 2, it is characterised in that main shaft 1 uses three groups of axles
Support is held, the front end of main shaft 1 is sleeved on the interior front of support set 3, the inner ring of angular contact ball bearing 6 difference by angular contact ball bearing 6
Positioned by the shaft shoulder of main shaft 1, inner spacing collar 4, rear spacer 7, locking nut 8, the outer shroud of angular contact ball bearing 6 is respectively by preceding
Blind flange 2, outer separator 5, the shoulder of support set 3 position, and are provided with circumferential helical outside support set 3, can be introduced from outside into cooling
Oil carries out heat transfer, ensures that heat caused by the long time running of angular contact ball bearing 6 is pulled away, does not cause thermal expansion；It is main
The middle part of axle 1 is sleeved on the inside back of support set 3 by middle angular contact ball bearing 10, and the middle inner ring of angular contact ball bearing 10 passes through respectively
Spacer 9 and long spacer 14 are positioned, and the outer shroud of angular contact ball bearing 10 is without positioning, the middle outer shroud both sides of angular contact ball bearing 10
Gap is left, angular contact ball bearing 10 has enough expansion rooms in ensureing when main shaft rotates at a high speed.The rear end of main shaft 1 passes through
Deep groove ball bearing 18 is sleeved on main spindle box body, and the inner ring of deep groove ball bearing 18 is respectively by long spacer 14, main drive gear 16, short
Spacer 17, oil scraper ring 12, sealing ring 19, back of the body cap 20 are positioned；Gap is left in the outer shroud both sides of deep groove ball bearing 18, ensures master
Deep groove ball bearing 18 has enough expansion rooms when axle rotates at a high speed.Boring axle 21 is cased with inside main shaft 1, two are provided with boring axle 21
The symmetrical long keyway of bar, coordinate with key 15 and be oriented to, two keys 15 are by screw symmetrically being connected on main shaft 1.
Angular contact ball bearing 6 and middle angular contact ball bearing 10 use grease lubrication, need to carry out encapsulation process, angular contact ball axle
6 are held in front portion, passes through the labyrinth structure dustproof and waterproof of front-end of spindle lid；Rear flange lid 11 is connected on support set 3 by screw handle
On, the adhesive of oil scraper ring 12 is bonded in long one end of spacer 14, and oil shield 13 is connected on rear flange lid 11, rear flange lid 11, gear
Oil ring 12, oil shield 13 form labyrinth sealing, prevent the lubricating oil of main drive gear 16 from being watered down into angular contact ball bearing 10
Lubricating grease and cause bearing lubrication bad；Deep groove ball bearing 18 uses thin oil lubricant with gear 16, and the rear portion of deep groove ball bearing 18 has
Oil scraper ring 12, sealing ring 19 and the end cap that is connected on main spindle box is formed labyrinth seal structure.
The assembly method of main shaft 1 and support set 3：When main shaft 1 assembles with angular contact ball bearing 6, according to angular contact ball bearing 6
At the 1 corresponding cooperation of inner ring actual size match grinding main shaft, size is smaller by 0 than the inner ring actual size of angular contact ball bearing 6 after main shaft match grinding
It is same to use match grinding mode when main shaft 1 and middle angular contact ball bearing 10 assemble to 0.004mm, angular contact in size ratio after match grinding
The inner ring actual size small 0 to 0.004mm of ball bearing 10.After the completion of the match grinding of main shaft 1 according to first anterior, rear middle part order load bearing and
Each several part part：The inner ring of angular contact ball bearing 6 is placed in the shaft shoulder of main shaft 1 and is spaced by inner spacing collar 4, rear spacer 7, then by locking
Tight nut 8 is positioned, and the outer shroud of angular contact ball bearing 6 is spaced by outer separator 5, its front end by blind flange 2 support set 3 shoulder
Positioning；The inner ring front portion of middle angular contact ball bearing 10 is positioned by preceding spacer 9, rear portion by long spacer 14, middle angular contact ball bearing 10
Outer shroud is without positioning；Locking nut 8 and back of the body cap 21 are tightened respectively, now measure angular contact ball bearing using survey tool
6 and the outer ring size of middle angular contact ball bearing 10, according to the corresponding mating part of the endoporus of size match grinding support set 3 of measurement, match grinding
Rear support covers 3 anterior endoporus should be than the outer shroud actual size of angular contact ball bearing 6 with the middle mating part size of angular contact ball bearing 10
Big 0.002 to 0.008mm, match grinding rear support covers 3 rear portion endoporus should be than middle angle with the middle mating part size of angular contact ball bearing 10
The outer shroud actual size big 0.015 to 0.022mm of contact ball bearing 10.Because of the outside at support set 3 and the cooperation of angular contact ball bearing 6
Circumferential helical is provided with, cooling oil can be introduced from outside into and carry out heat transfer, therefore at the middle angular contact ball bearing 10 of fit clearance
It is small, the slightly larger thermal expansion that ensure that main shaft and rotate angular contact ball bearing 10 at a high speed of fit clearance at middle angular contact ball bearing 10
Space, inner and outer ring tension is avoided to cause bearing stuck phenomenon.After the completion of the match grinding of support set 3, middle angular contact that main shaft 1 is assembled
The part of ball bearing 10 is dismantled, and only retains angular contact ball bearing 6, inner spacing collar 4, outer separator 5, spacer 7 and the lock of front-end of spindle
Tight nut 8, then two keys 15 fill the relevant position for being connected on main shaft 1, then main shaft portion from the front aperture of support set 3 with screw
Enter support set 3, by forward flange lid 2 with screw-driving in the front end of support set 3；Finally by dismantle under middle angular contact ball bearing 10 and
Each several part part is attached on main shaft 1 in order from the rear end of main shaft 1, and back of the body cap 20 is tightened, and boring axle 21 is along two symmetrical long keyway
Alignment keys 15 are transferred to inside main shaft 1.
Boring axle is cased with inside main shaft, two symmetrical long keyway are provided with boring axle, coordinates with key and is oriented to, two push-tos cross spiral shell
Nail is symmetrically being connected on main shaft.Gap is left in middle angular contact ball bearing outer shroud both sides, and the outer shroud both sides of deep groove ball bearing 18 are stayed
There is gap, ensure that there is enough expansion rooms when main shaft rotates at a high speed.
Claims (5)
1. a kind of high-speed main spindle of CNC horizontal milling ＆ boring machine, it is characterised in that main shaft (1) is by three groups of bearings, before main shaft (1)
End is sleeved on support set (3) endoporus front portion by angular contact ball bearing (6), and angular contact ball bearing (6) inner ring passes through main shaft respectively
(1) the shaft shoulder, inner spacing collar (4), rear spacer (7), locking nut (8) is positioned, and angular contact ball bearing (6) outer shroud passes through respectively
The shoulder positioning of forward flange lid (2), outer separator (5), support set (3)；The middle part of main shaft (1) is covered by middle angular contact ball bearing (10)
Mounted in support set (3) endoporus rear portion, middle angular contact ball bearing (10) inner ring is fixed by preceding spacer (9) and long spacer (14) respectively
Position, middle angular contact ball bearing (10) outer shroud is without positioning, and main shaft (1) is internal to be cased with boring axle (21), and main shaft (1) rear end passes through depth
Ditch ball bearing (18) is sleeved on main spindle box body.
2. the high-speed main spindle of CNC horizontal milling ＆ boring machine according to claim 1, it is characterized in that the handle related to main shaft (1) connects
Structure：A. boring axle (21) is cased with inside main shaft (1), two symmetrical long keyway is provided with boring axle (21), coordinated with key (15) and lead
To, two keys (15) by screw symmetrically being connected on main shaft (1)；B. main shaft (1) rear end is set with by deep groove ball bearing (18)
On main spindle box body, deep groove ball bearing (18) inner ring respectively by long spacer (14), main drive gear (16), short spacer (17),
Oil scraper ring (12), sealing ring (19), back of the body cap (20) are positioned.
3. the high-speed main spindle of CNC horizontal milling ＆ boring machine according to claim 1, it is characterized in that the lubrication of the bearing and fan
Palace sealing structure：Angular contact ball bearing (6) and middle angular contact ball bearing (10) use grease lubrication, configure the labyrinth of dustproof and waterproof
Structure is sealed, and angular contact ball bearing (6) is in front portion, and the labyrinth structure of front-end of spindle lid is shared with main shaft (1)；Middle angular contact
The sealing of ball bearing (10) by rear flange lid (11) by screw being connected on support set (3), oil shield (13) is being connected on rear method
On orchid lid (11), oil scraper ring (12) is bonded in long spacer (14) one end with adhesive, rear flange lid (11), oil scraper ring (12) and anti-
Oil cover (13) composition labyrinth sealing, prevent that angular contact ball bearing (10) waters down profit in the lubricating oil entrance of main drive gear (16)
Consistent lubricant and cause bearing lubrication bad；Deep groove ball bearing (18) uses thin oil lubricant, deep groove ball bearing with main drive gear (16)
(18) rear portion forms labyrinth seal structure by oil scraper ring (12), sealing ring (19) and the end cap being connected on main spindle box.
4. the high-speed main spindle of CNC horizontal milling ＆ boring machine according to claim 1, it is characterised in that cooling structure：Support set
(3) it is outside to be provided with circumferential helical, cooling oil can be introduced from outside into and carry out heat transfer, when ensureing that angular contact ball bearing (6) is long
Between operating caused by heat be pulled away, do not cause thermal expansion；Gap is left in middle angular contact ball bearing (10) outer shroud both sides, protects
Rotation angular contact ball bearing (10) has enough expansion rooms to card main shaft at a high speed；Stay deep groove ball bearing (18) outer shroud both sides
There is gap, ensure that deep groove ball bearing (18) has enough expansion rooms when main shaft rotates at a high speed.
A kind of 5. assembly method of the high-speed main spindle of CNC horizontal milling ＆ boring machine as claimed in claim 1, it is characterised in that main shaft (1)
With the assembly method of support set (3)：Main shaft (1) is with before angular contact ball bearing (6), middle angular contact ball bearing (10) assembling, root
According to angular contact ball bearing (6) inner ring and middle angular contact ball bearing (10) inner ring actual size, respectively match grinding main shaft (1) it is anterior, in
Portion periphery is accordingly at cooperation, main shaft (1) is anterior after match grinding, middle part peripheral dimension respectively than angular contact ball bearing (6) inner ring and in
Angular contact ball bearing (10) inner ring actual size small 0 to 0.004mm；According to first anterior, rear middle part order after the completion of main shaft (1) match grinding
Load bearing and each several part part：Angular contact ball bearing (6) inner ring be placed in the shaft shoulder of main shaft (1) and by inner spacing collar (4), after every
Set (7) is spaced, then by locking nut (8) positioning, angular contact ball bearing (6) outer shroud is spaced by outer separator (5), its front end by
Forward flange lid (2) positions at the shoulder of support set (3)；The inner ring front portion of middle angular contact ball bearing (10) by preceding spacer (9), after
Portion is positioned by long spacer (14), and middle angular contact ball bearing (10) outer shroud is without positioning；Respectively by locking nut (8) and back of the body cap
(20) tighten, the outer ring size of angular contact ball bearing (6) and middle angular contact ball bearing (10) now measured using survey tool,
According to the corresponding mating part of size match grinding support set (3) endoporus of measurement, the anterior endoporus of match grinding rear support set (3) and angular contact ball
Bearing (6) mating part size should be than angular contact ball bearing (6) outer shroud actual size big 0.002 to 0.008mm, match grinding rear support
Covering (3) rear portion endoporus should be than the actual chi of middle angular contact ball bearing (10) outer shroud with middle angular contact ball bearing (10) mating part size
Very little big 0.015 to 0.022mm；After the completion of support set (3) match grinding, middle angular contact ball bearing (10) zero that main shaft (1) is assembled
Part is dismantled, and only retains angular contact ball bearing (6), inner spacing collar (4), outer separator (5), rear spacer (7) and the lock of front-end of spindle
Tight nut (8), then by two keys (15) with screw the relevant position for being connected on main shaft (1), then by main shaft portion from support set
(3) front aperture loads support set (3), by forward flange lid (2) with screw-driving in support set (3) front end；Finally by under dismounting
Middle angular contact ball bearing (10) and each several part part are attached on main shaft (1) in order from rear-end of spindle, back of the body cap (20) are tightened, boring
Axle (21) loads main shaft (1) inside along two symmetrical long keyway alignment keys (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710972489.2A CN107571075B (en) | 2017-10-18 | 2017-10-18 | High-speed spindle of numerical control horizontal milling and boring machine and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710972489.2A CN107571075B (en) | 2017-10-18 | 2017-10-18 | High-speed spindle of numerical control horizontal milling and boring machine and assembly method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107571075A true CN107571075A (en) | 2018-01-12 |
| CN107571075B CN107571075B (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710972489.2A Active CN107571075B (en) | 2017-10-18 | 2017-10-18 | High-speed spindle of numerical control horizontal milling and boring machine and assembly method |
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| CN (1) | CN107571075B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613649A (en) * | 2018-04-25 | 2018-10-02 | 中国航空工业集团公司北京长城航空测控技术研究所 | A kind of split type shafting of large scale three dimensions entirety measurement and positioning instrument revolution at a high speed |
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| JPH11156603A (en) * | 1997-11-21 | 1999-06-15 | Kawasaki Heavy Ind Ltd | Spindle unit |
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| CN203664690U (en) * | 2014-01-21 | 2014-06-25 | 云南琥正机械有限公司 | Unit-type lathe spindle system |
| CN204075245U (en) * | 2014-08-28 | 2015-01-07 | 浙江陀曼精密机械有限公司 | A kind of biserial mainshaft mechanism |
| CN106270571A (en) * | 2016-08-29 | 2017-01-04 | 北京超同步伺服股份有限公司 | Bearing assembly method for electro spindle |
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2017
- 2017-10-18 CN CN201710972489.2A patent/CN107571075B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11156603A (en) * | 1997-11-21 | 1999-06-15 | Kawasaki Heavy Ind Ltd | Spindle unit |
| CN2526123Y (en) * | 2002-01-10 | 2002-12-18 | 财团法人工业技术研究院 | Clamping device for spindle of boring and milling machine |
| CN201862784U (en) * | 2010-08-06 | 2011-06-15 | 沈阳机床股份有限公司 | Rear-mounted direct-driven high-speed hydrostatic main shaft structure of numerical control machine tool |
| CN102328207A (en) * | 2011-09-15 | 2012-01-25 | 无锡桥联数控机床有限公司 | Four-station numerical control horizontal boring-milling drilling machine |
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| CN103143729A (en) * | 2013-04-03 | 2013-06-12 | 云南Cy集团有限公司 | Heavy-duty numerical control horizontal lathe with high cost performance |
| CN203664690U (en) * | 2014-01-21 | 2014-06-25 | 云南琥正机械有限公司 | Unit-type lathe spindle system |
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| CN106270571A (en) * | 2016-08-29 | 2017-01-04 | 北京超同步伺服股份有限公司 | Bearing assembly method for electro spindle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613649A (en) * | 2018-04-25 | 2018-10-02 | 中国航空工业集团公司北京长城航空测控技术研究所 | A kind of split type shafting of large scale three dimensions entirety measurement and positioning instrument revolution at a high speed |
| CN108613649B (en) * | 2018-04-25 | 2020-04-10 | 中国航空工业集团公司北京长城航空测控技术研究所 | Large-scale three-dimensional space integral measurement locator high-speed rotation split type shafting |
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| Publication number | Publication date |
|---|---|
| CN107571075B (en) | 2023-09-08 |
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