CN109048448A - A kind of lead screw support construction - Google Patents
A kind of lead screw support construction Download PDFInfo
- Publication number
- CN109048448A CN109048448A CN201811050503.4A CN201811050503A CN109048448A CN 109048448 A CN109048448 A CN 109048448A CN 201811050503 A CN201811050503 A CN 201811050503A CN 109048448 A CN109048448 A CN 109048448A
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- China
- Prior art keywords
- lead screw
- bearing
- spacer
- bearing block
- gland
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 210000004907 gland Anatomy 0.000 claims abstract description 42
- 125000006850 spacer group Chemical group 0.000 claims abstract description 39
- 230000008878 coupling Effects 0.000 claims description 14
- 238000010168 coupling process Methods 0.000 claims description 14
- 238000005859 coupling reaction Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 14
- 239000011324 bead Substances 0.000 claims description 9
- 230000014759 maintenance of location Effects 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims 1
- 239000013589 supplement Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 206010037660 Pyrexia Diseases 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
- B23Q5/404—Screw bearings therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The present invention relates to a kind of lead screw support constructions, including lead screw, motor and bearing block are located at the two sides of lead screw, the side of motor is equipped with motor cabinet, the opening of motor cabinet is sealed by the first spacer, lead screw one end is connected with the shaft of motor, first bearing is installed between motor cabinet inner wall and lead screw, it is blocked by the first spacer the side of first bearing, the other side of first bearing is equipped with the first gland, the other end of lead screw is extend into bearing block, bearing block one end is sealed by the second gland, the other end of bearing block is sealed by the second spacer, second bearing is installed between the second gland and the second spacer on lead screw.This second practical gland is fixed to use 4 groups of disc spring precompressed, guarantee precompressed amount is 0.015mm, when thermal stretching occurring when lead screw runs at high speed, it can be moved to bearing block gland direction, due to thermal expansion length very little, too big variation will not be generated for disc spring pressure, both ensure that the rigidity for the lower supporting bearing that runs at high speed.
Description
Technical field
The present invention relates to numerical control machine tool technique fields, more particularly to a kind of lead screw support construction.
Background technique
The rapid traverse of existing numerically-controlled machine tool has reached 60m/min, and corresponding Lead screw transmission structure is also changing.To guarantee lead screw essence
Degree, combines axial thrust when guide screw movement, the lead screw of High Speed NC Machine Tools focuses mostly between diameter 35-55mm, together
When lead between 16-20mm, mostly use feeding motor and ball-screw direct connection driving mode.Connecting piece is using no backlash bullet
Property shaft coupling.There are three types of the common mounting means of ball-screw: 1, one end is fixed, and one end is free, suitable for short lead screw and vertically
The lead screw of installation.2, one end is fixed, one end freely-supported, is suitable for longer horizontal installation lead screw.3, both ends are fixed, and are suitable for long filament
Thick stick or high revolving speed, the occasion for requiring high tension and compression rigidity.
Existing there are problems: the bearing of ball-screw, mainly constrains the axial float of lead screw；The installation of lead screw, generally
It is fixed using one end, the free supporting form in one end.The structure that lead screw one end axial restraint, the other end axially can move freely,
Often in the case where high-speed motion, lead screw can be caused to extend due to fever, be deformed, cause displacement error；If using
The all fixed supporting form in both ends also due to fever causes lead screw to extend, and makes two supports by axial elongation deformation force
Effect, and cause the bending deformation of lead screw.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of lead screw support construction, the second gland is fixed to use 4 groups
Disc spring precompressed, guarantee precompressed amount are 0.015mm, can be to bearing block gland side when thermal stretching occurring when lead screw runs at high speed
To movement, due to thermal expansion length very little, too big variation will not be generated for disc spring pressure, both ensure that the lower support shaft that runs at high speed
The rigidity held in turn avoids under pure fixed supporting form, and bearing is changed by lead screw thermal stretching, bring precompressed variation, to make
At raceway abrasion.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of lead screw support construction, including numerical control
Lead screw, motor and the bearing block installed on bed piece, the motor and bearing block are located at the two sides of lead screw, described
The side of motor motor cabinet is installed, the opening of the motor cabinet is sealed by the first spacer, and described lead screw one end passes through the
One spacer extend into motor cabinet and is connected by shaft coupling with the shaft of motor, pacifies between the motor cabinet inner wall and lead screw
Equipped with first bearing, the side of the first bearing is blocked by the first spacer, and the other side of the first bearing is equipped with
One gland, is equipped with the first nut connecting with threads of lead screw in first gland, first gland and first bearing it
Between there are gap, the other end of the lead screw is extend into bearing block, and described bearing block one end is sealed by the second gland,
The other end of the bearing block is sealed by the second spacer, and the other end of the lead screw passes through the second spacer and extend into bearing block
It is interior, second bearing is installed between the second gland and the second spacer on the lead screw, be equipped in second gland with
Second nut of threads of lead screw connection, the upper and lower end of second gland are horizontally installed with flush end lock-screw, the flush end
Lock-screw one end passes through the second gland and bearing block is locked, and the flush end lock-screw other end is threaded with flush end spiral shell
Mother, the flush end lock-screw are cased with elastic component between flush end nut and bearing block.
As a supplement to the technical solution of the present invention, the shaft coupling uses positive coupling.
As a supplement to the technical solution of the present invention, the first bearing is by four angular contact bearing groups
At using the combination installation form of column DFF.
As a supplement to the technical solution of the present invention, the second bearing is by two angular contact bearing groups
At using column DF combination installation form.
As a supplement to the technical solution of the present invention, the contact angle of the angular contact bearing is degree.
As a supplement to the technical solution of the present invention, on the inner wall of the motor cabinet and bearing block
A circle retention bead is arranged on inner wall, between the retention bead and first bearing and between retention bead and second bearing
It is mounted on retaining ring, is arranged on jagged, described motor cabinet and bearing block on the side wall of the retaining ring and is mounted on one
Hold the positioning screw extending into notch.
As a supplement to the technical solution of the present invention, on the outer ring of first spacer and second every
Rotary seal is mounted on the outer ring of set, one end of the motor cabinet and one end of bearing block are located at corresponding rotation
Envelope outside is provided with baffle.
As a supplement to the technical solution of the present invention, pass through O between second gland and bearing block
The sealing of type circle.
As a supplement to the technical solution of the present invention, the elastic component uses disc spring.
As a supplement to the technical solution of the present invention, it is provided on the lead screw and fixes the first spacer
One circle step, the second spacer side is fixed by the third nut being threadedly coupled on lead screw.
The utility model has the advantages that having several advantages that 1, lead screw and motor pass through the present invention relates to a kind of lead screw support construction
Positive coupling connection, different from flexible coupling, structure has high torsion without the element for absorbing axle center deviation
Turn rigidity.In addition, compared with flexible coupling torque can be obtained with smaller outer diameter, therefore can reduce apparent size, to drop
Low rotor inertia.2, first bearing is using the combination installation form of 4 column DFF, and rigidity is the 2 times or more of two column bearings, simultaneously
Its position can inhibit the increase of internal load caused by installation inclination apart from small.Its outer ring is in such a way that positioning pre-tightens, in advance
Pressure amount is 0.015mm, is guaranteed under high revolving speed, the radial rigidity of lead screw support.3, the locking torque of the second nut is the first nut
2 times of locking torque, guarantee the rigidity of the main support in motor cabinet side.4, second bearing using 2 column DF combine installation forms, second
Gland is fixed to use 4 groups of disc spring precompressed, and guarantee precompressed amount is 0.015mm, can when thermal stretching occurring when lead screw runs at high speed
To be moved to bearing block gland direction, due to thermal expansion length very little, too big variation will not be generated for disc spring pressure, both ensure that
Run at high speed the rigidity of lower supporting bearing, in turn avoids under pure fixed supporting form, and bearing is changed by lead screw thermal stretching, bring
Precompressed variation, thus caused by raceway wear.5, motor cabinet and bearing block have rotary seal close to lead screw screw pitch end, protect
Demonstrate,prove the cleaning of bearing.6, baffle 10 is housed, the entrance of cuttings liquid and impurity can be avoided with effective protection bearing.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the partial enlarged view at Figure 1A of the present invention；
Fig. 3 is the partial enlarged view at Figure 1B of the present invention；
Fig. 4 is the constitutional diagram at Fig. 3 C of the present invention.
Diagram: 1, lead screw, 2, motor cabinet, 3, shaft coupling, 4, first bearing, the 5, first nut, the 6, first gland, 7, gear
Circle, 8, rotary seal, the 9, first spacer, 10, baffle, 11, bearing block, the 12, second gland, 13, step, 14, second bearing, 15,
Motor, 16, notch, 17, positioning screw, 18, retention bead, the 19, second spacer, 20, third nut, the 21, second nut, 22,
Flush end lock-screw, 23, O-ring, 24, plain cushion, 25, flush end nut, 26, elastic component.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiments of the present invention are related to a kind of lead screw support construction, as shown in Figs 1-4, including pacify on numerically-controlled machine tool lathe bed
Lead screw 1, motor 15 and the bearing block 11 of dress, the motor 15 and bearing block 11 are located at the two sides of lead screw 1, described
The side of motor 15 is equipped with motor cabinet 2, and the opening of the motor cabinet 2 is sealed by the first spacer 9, and described 1 one end of lead screw is worn
The first spacer 9 is crossed to extend into motor cabinet 2 and be connected by shaft coupling 3 with the shaft of motor 15,2 inner wall of motor cabinet and
First bearing 4 is installed, the side of the first bearing 4 is blocked by the first spacer 9, the first bearing 4 between lead screw 1
The other side is equipped with the first gland 6, is equipped with the first nut 5 being threadedly coupled with lead screw 1 in first gland 6, and described
There are gap between one gland 6 and first bearing 4, the other end of the lead screw 1 is extend into bearing block 11, the bearing
11 one end of seat are sealed by the second gland 12, and the other end of the bearing block 11 is sealed by the second spacer 19, the lead screw 1
The other end passes through the second spacer 19 and extend into bearing block 11, on the lead screw 1 between the second gland 12 and the second spacer 19
Second bearing 14 is installed, the second nut 21 being threadedly coupled with lead screw 1 is installed in second gland 12, described
The upper and lower end of two glands 12 is horizontally installed with flush end lock-screw 22, which passes through the second gland
12 lock with bearing block 11, and 22 other end of flush end lock-screw is threaded with flush end nut 25, the flush end locking screw
Nail 22 is cased with elastic component 26 between flush end nut 25 and bearing block 11.
The shaft coupling 3 uses positive coupling.
The first bearing 4 is made of four angular contact bearings, using the combination installation form of 4 column DFF.
The second bearing 14 is made of two angular contact bearings, combines installation form using 2 column DF.
The contact angle of the angular contact bearing 4 is 60 degree.
A circle retention bead 18, the limit are arranged on the inner wall of the motor cabinet 2 and on the inner wall of bearing block 11
Retaining ring 7, the retaining ring are mounted between position protrusion 18 and first bearing 4 and between retention bead 18 and second bearing 14
Jagged 16 are arranged on 7 side wall, is mounted on one end on the motor cabinet 2 and bearing block 11 and extend into notch 16
Positioning screw 17.
Rotary seal 8, the electricity are mounted on the outer ring of first spacer 9 and on the outer ring of the second spacer 19
One end of base 2 and one end of bearing block 11 are located on the outside of corresponding rotary seal 8 and are provided with baffle 10.
It is sealed between second gland 12 and bearing block 11 by O-ring 23.
The elastic component 26 uses disc spring.
The circle step 13 for fixing the first spacer 9 is provided on the lead screw 1,19 side of the second spacer passes through
The third nut 20 being threadedly coupled on lead screw 1 is fixed.
Embodiment
There is the angular contact ball bearing of 4 60 ° of contact angles in motor cabinet 2, is installed by the face-to-face form of DFF, outside first bearing 4
There is retaining ring 7 between circle and motor cabinet 2, facilitate adjustment bearing installation accuracy, 7 side of retaining ring is jagged, fixed by positioning screw 17
Position.4 outer ring of first bearing is fixed with motor cabinet 2 by the first gland 6, and for the first gland 6 there are adjustment amount, adjustment amount refers to the
Gap between one gland 6 and first bearing 4, gap are about 0.015mm, for eliminating bearing clearance and guaranteeing precompressed amount
0.015mm.Rotary seal 8 is housed on 9 outer ring of the first spacer simultaneously, 2 front end of motor cabinet is also equipped with baffle 10 on the outside of rotary seal 8,
The entrance of cuttings liquid and impurity can be avoided with effective protection bearing.What the first nut 5 was locked is the inner ring of 4 side of first bearing,
What the first gland 6 was locked is the outer ring of 4 side of first bearing.
Bearing block 11 is connect by screw with lathe bed, is positioned by side-locating face.There are 2 60 ° of contact angles in motor cabinet 2
Angular contact ball bearing is installed by the face-to-face form of DF, has retaining ring 7 between 14 outer ring of second bearing and bearing block 11, facilitate adjustment
Bearing installation accuracy, 7 side of retaining ring is jagged, is positioned by positioning screw 17.Second bearing 14 passes through the second gland 12 and axis
It is fixed to hold seat 11, radially there is 23 package encapsulation of O-ring.There are 4 flush end holding screws 16 and bearing block 11 on second gland 12
It is connected, the two sides of elastic component 26 there are 2 plain cushions 24, and elastic component 26 is made of 2 disc springs, and the precompression of second bearing 14 passes through tune
Section flush end nut 25 compresses disc spring to guarantee.Lead screw 1 pass through second bearing 14, two sides third nut 20 and the second nut 21 come
It is fixed with second bearing 14, there is the second spacer 19 between second bearing 14 and third nut 20, the locking of the second spacer 19 is the
The outer ring of two bearings, 14 side, the locking of the second nut 21 be 14 side of second bearing inner ring, while 19 outer ring of the second spacer
Upper that rotary seal 8 is housed, 11 front end of bearing block is also equipped with baffle 10 on the outside of rotary seal 8, can avoid chip with effective protection bearing
The entrance of liquid and impurity.
Claims (10)
1. a kind of lead screw support construction, including the lead screw (1), motor (15) and bearing block installed on numerically-controlled machine tool lathe bed
(11), it is characterised in that: the motor (15) and bearing block (11) is located at the two sides of lead screw (1), the motor
(15) side is equipped with motor cabinet (2), and the opening of the motor cabinet (2) is sealed by the first spacer (9), the lead screw (1)
One end passes through the first spacer (9) and extend into motor cabinet (2) and be connected by shaft coupling (3) with the shaft of motor (15), described
Motor cabinet (2) inner wall and lead screw (1) between first bearing (4) are installed, the side of the first bearing (4) passes through the first spacer
(9) it blocks, the other side of the first bearing (4) is equipped with the first gland (6), is equipped in first gland (6) and silk
The first nut (5) that thick stick (1) is threadedly coupled, there are gaps between first gland (6) and first bearing (4), described
The other end of lead screw (1) is extend into bearing block (11), and described bearing block (11) one end is sealed by the second gland (12), should
The other end of bearing block (11) is sealed by the second spacer (19), and the other end of the lead screw (1) passes through the second spacer (19)
It extend into bearing block (11), the second axis is installed between the second gland (12) and the second spacer (19) on the lead screw (1)
It holds (14), the second nut (21) being threadedly coupled with lead screw (1), second pressure is installed in second gland (12)
The upper and lower end of lid (12) is horizontally installed with flush end lock-screw (22), which passes through the second pressure
It covers (12) and bearing block (11) to lock, described flush end lock-screw (22) other end is threaded with flush end nut (25), should
Flush end lock-screw (22), which is located between flush end nut (25) and bearing block (11), is cased with elastic component (26).
2. a kind of lead screw support construction according to claim 1, it is characterised in that: the shaft coupling (3) is using rigidity
Shaft coupling.
3. a kind of lead screw support construction according to claim 1, it is characterised in that: the first bearing (4) is by four
Angular contact bearing composition, using the combination installation form of 4 column DFF.
4. a kind of lead screw support construction according to claim 1, it is characterised in that: the second bearing (14) is by two
Angular contact bearing composition combines installation form using 2 column DF.
5. a kind of lead screw support construction according to claim 3 or 4, it is characterised in that: the angular contact bearing (4)
Contact angle is 60 degree.
6. a kind of lead screw support construction according to claim 1, it is characterised in that: on the inner wall of the motor cabinet (2)
And a circle retention bead (18) is arranged on the inner wall of bearing block (11), the retention bead (18) and first bearing (4) it
Between and retention bead (18) and second bearing (14) between be mounted on retaining ring (7), be arranged on the side wall of the retaining ring (7)
The positioning that one end is extend into notch (16) is mounted on jagged (16), the motor cabinet (2) and bearing block (11)
Screw (17).
7. a kind of lead screw support construction according to claim 1, it is characterised in that: the outer ring of first spacer (9)
It is mounted on rotary seal (8) on the upper and outer ring of the second spacer (19), one end of the motor cabinet (2) and bearing block
(11) one end is located on the outside of corresponding rotary seal (8) and is provided with baffle (10).
8. a kind of lead screw support construction according to claim 1, it is characterised in that: second gland (12) and bearing
It is sealed between seat (11) by O-ring (23).
9. a kind of lead screw support construction according to claim 1, it is characterised in that: the elastic component (26) uses dish
Spring.
10. a kind of lead screw support construction according to claim 1, it is characterised in that: be provided on the lead screw (1) solid
One circle step (13) of fixed first spacer (9), the second spacer (19) side passes through the third being threadedly coupled on lead screw (1)
Nut (20) is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050503.4A CN109048448A (en) | 2018-09-10 | 2018-09-10 | A kind of lead screw support construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050503.4A CN109048448A (en) | 2018-09-10 | 2018-09-10 | A kind of lead screw support construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109048448A true CN109048448A (en) | 2018-12-21 |
Family
ID=64761143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811050503.4A Pending CN109048448A (en) | 2018-09-10 | 2018-09-10 | A kind of lead screw support construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109048448A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720510A (en) * | 2020-05-22 | 2020-09-29 | 福建省黑石精密机械有限公司 | High-precision movement shaft of machine tool and working method |
| WO2023237062A1 (en) * | 2022-06-09 | 2023-12-14 | 北京博鲁斯潘精密机床有限公司 | Machine tool for machining aircraft blade tenon |
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| JPH11114746A (en) * | 1997-10-15 | 1999-04-27 | Okuma Corp | Tension variable device of feed screw |
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| CN103389205A (en) * | 2013-07-17 | 2013-11-13 | 西安交通大学 | Device for detecting comprehensive performance of ball screw assembly in loaded state |
| CN103934722A (en) * | 2014-03-17 | 2014-07-23 | 陕西汉江机床有限公司 | Fixing mechanism for hollow ball screw pair |
| CN204295393U (en) * | 2014-12-16 | 2015-04-29 | 山东华强精密机床股份有限公司 | A kind of ball-screw bidirectional modulation pre-tightening mechanism |
| CN204725208U (en) * | 2015-06-11 | 2015-10-28 | 宁波海天精工股份有限公司 | A kind of leading screw supporting construction |
| CN105479237A (en) * | 2016-01-18 | 2016-04-13 | 南通国盛机电集团有限公司 | Lead screw prestretching structure |
| CN205660454U (en) * | 2016-06-08 | 2016-10-26 | 山东永华机械有限公司 | Lathe tail end formula lead screw pre -stretching structure of can moving about |
| CN106078176A (en) * | 2016-06-30 | 2016-11-09 | 广州市高品机床有限公司 | A kind of screw mandrel prestretched mounting structure |
| CN207788389U (en) * | 2018-01-17 | 2018-08-31 | 福建省威诺数控有限公司 | A kind of pre-drawing structure of a ball screw with automatic and dynamically compensating |
| CN209062655U (en) * | 2018-09-10 | 2019-07-05 | 宁波海天精工股份有限公司 | A kind of lead screw support construction |
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- 2018-09-10 CN CN201811050503.4A patent/CN109048448A/en active Pending
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| JPH0212554U (en) * | 1988-07-08 | 1990-01-25 | ||
| JPH11114746A (en) * | 1997-10-15 | 1999-04-27 | Okuma Corp | Tension variable device of feed screw |
| CN102261994A (en) * | 2011-05-05 | 2011-11-30 | 洛阳Lyc轴承有限公司 | Performance tester for super-huge type turntable bearing |
| CN203109694U (en) * | 2012-12-25 | 2013-08-07 | 泉州佳泰数控有限公司 | Screw support bearing mounting device with seal mechanism |
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| CN205660454U (en) * | 2016-06-08 | 2016-10-26 | 山东永华机械有限公司 | Lathe tail end formula lead screw pre -stretching structure of can moving about |
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| CN207788389U (en) * | 2018-01-17 | 2018-08-31 | 福建省威诺数控有限公司 | A kind of pre-drawing structure of a ball screw with automatic and dynamically compensating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720510A (en) * | 2020-05-22 | 2020-09-29 | 福建省黑石精密机械有限公司 | High-precision movement shaft of machine tool and working method |
| WO2023237062A1 (en) * | 2022-06-09 | 2023-12-14 | 北京博鲁斯潘精密机床有限公司 | Machine tool for machining aircraft blade tenon |
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