CN106270575B - A kind of high-precision numerical control walks heart machine tool chief axis - Google Patents
A kind of high-precision numerical control walks heart machine tool chief axis Download PDFInfo
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- CN106270575B CN106270575B CN201610832627.2A CN201610832627A CN106270575B CN 106270575 B CN106270575 B CN 106270575B CN 201610832627 A CN201610832627 A CN 201610832627A CN 106270575 B CN106270575 B CN 106270575B
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- machine tool
- end cap
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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)
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- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of high-precision numerical controls to walk heart machine tool chief axis, including main shaft body, shaft core, bearing assembly, right end cap and driving wheel, and one end of main shaft body is fixed on by fixing piece on lathe, and the other end is lock onto by principal shaft locking block on lathe；Bearing assembly is socketed in shaft core, and main shaft body is socketed on bearing assembly；Bearing assembly includes the first bearing group being set in side by side successively in shaft core, bearing spacer, second bearing group；The both ends of bearing assembly are respectively provided with the first step for supporting bearing assembly and bearing locking block；Right end cap is socketed in shaft core and is fixed on the right side of main shaft body；Right end cap is equipped with a block for being connected to first bearing group；The inner wall of main shaft body is equipped with a convex wall, and right end is connected to the left side of first bearing group, the right side clearance fit of left end and second bearing group.The present invention high-precision numerical control walk heart machine tool chief axis, have the characteristics that it is high-accuracy, run at high speed it is steady, with long service life.
Description
Technical field
The present invention relates to high-accuracy, efficient digital control processing field more particularly to metal and the vehicle of nonmetallic materials,
The numerically controlled processing equipment main shaft of the occasions such as brill, boring, engraving.
Background technology
It is the combined machines such as a kind of economy car, brill, boring, engraving that heart automatic lathe equipment is walked in numerical control, can meet primary dress
Folder completes a variety of complex machining process requirements, is mainly used for high-accuracy small-sized batch hardware class part, axis class abnormal shape part volume
Deng processing, belong to Precision Machining numerical control device.In early days, the type equipment is mainly used in military project instrument precision machining industry, with
The continuous development for process of industrialization, to meet the market requirement, the type equipment is gradually applied to all kinds of manufacturings of society
The processing of product, the especially Precision Machining of batch miniature parts, can be improved processing efficiency.Currently, since the heart is walked in domestic numerical control
Lathe equipments are started late, and by limiting factors such as technology closing, policies, equipment mainly or by import carrys out meet demand, because
This mating core component especially main shaft etc. is almost blank.
Invention content
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of high-precision numerical controls to walk scheming bed master
Axis has the characteristics that high-accuracy, high rigidity, runs at high speed that steady, service life is long.
The purpose of the present invention is realized using following technical scheme：
A kind of high-precision numerical control walks heart machine tool chief axis, including main shaft body, shaft core, bearing assembly, right end cap and is installed on
Driving wheel in shaft core；
One end of the main shaft body is fixed on by fixing piece on lathe, and the other end lock onto machine by principal shaft locking block
On bed；
The bearing assembly is socketed in the shaft core, and the main shaft body is socketed on the bearing assembly；
The bearing assembly includes the first bearing group being set in side by side successively in shaft core, bearing spacer, second bearing group；
The both ends of the bearing assembly are respectively provided with the first step for supporting the bearing assembly and bearing locking block；
The right end cap be socketed in shaft core and with shaft core clearance fit, which is fixed on the right side of main shaft body
On；The left side of the right end cap is equipped with a block, and the block is connected on the right side of first bearing group；
The inner wall of the main shaft body is equipped with a convex wall, and the right end of the convex wall is connected to the left side of first bearing group,
The right side clearance fit of left end and second bearing group.
Preferably, the first bearing group is installed with second bearing group by two ball bearings back-to-back.
Preferably, in the first bearing group and second bearing group, ring is equipped between two ball bearings installed back-to-back
The bearing positioning sleeve being placed in shaft core, the bearing positioning sleeve are connected to respectively on the end face of described two ball bearings.
Preferably, the right end cap has second step around shaft core cutting；The shaft core is equipped with for described second
The outer surface of the first convex block that step abuts against, first convex block is circumferentially equipped with the first V-shaped groove.
Preferably, the second step is equipped with open horizontal towards the first right groove, and first convex block is equipped with pair
The first lug boss answered, and the first lug boss level is connected in first groove.
Preferably, the right end cap is equipped with the osculum being vertically arranged, the water outlet mouth down of the osculum, and the row
Water hole is connected with the first V-shaped groove.The second osculum being vertically arranged, the water outlet of second osculum are additionally provided on right end cap
Mouth down, and the second osculum is connected with the first groove.
Preferably, the position of the water inlet of the position of the water inlet of the first osculum and the second osculum is equipped with an expansion
Mouthful.
Preferably, it further includes the left end cap for being installed on main shaft body left end that the high-precision numerical control, which walks heart machine tool chief axis,
The left end cap is socketed in shaft core and coordinates with bearing locking block gap；The left end cap has around bearing locking block cutting
Third step；The bearing locking block is equipped with the second convex block for being abutted against with the third step, second convex block
Outer surface is circumferentially equipped with the second V-shaped groove.
Preferably, the third step is equipped with open horizontal towards the second left groove, and second convex block is equipped with pair
The second lug boss answered, the second lug boss level are connected in second groove.
Preferably, an axially extending bore, the axially extending bore and shaft core coaxial line are opened up inside the shaft core；The axial direction is logical
Hole is used for installation set thick stick, and the mode that threaded connection can be used in the set thick stick is fixed in shaft core.Preferably, shaft core is equipped with positioning
Part is used for the setting angle of quick positioning sleeve thick stick, prevents abnormal skidding.
Preferably, the right end of the shaft core is equipped with Workpiece clamping head and converts end cap.
Preferably, it further includes the encoder gear disk being installed in shaft core that the high-precision numerical control, which walks heart machine tool chief axis, described
Encoder gear disk folder is set between bearing locking block and driving wheel.
Preferably, the right side of the main shaft body is equipped with sealing ring.
Preferably, it is provided with keyway in the shaft core, for installing positioning key, positioning key is for positioning and regular coding gear
Disk and driving wheel.
Preferably, the right end of the axially extending bore is equipped with taper surface, and the taper surface is for positioning Workpiece clamping head.
Preferably, the left end of the shaft core is equipped with Workpiece clamping head pine drawing mechanism, which can be according to processing bar outer circle
Size selects mating collet, realizes clamping and the conveying function of processing bar.
Compared with prior art, the beneficial effects of the present invention are：
1. the high-precision numerical control of the present invention walks heart machine tool chief axis, bearing assembly is socketed in shaft core, and shaft core passes through bearing group
Part is rotatablely connected with main shaft body, first bearing group, bearing spacer and second bearing group is arranged side by side successively in shaft core, in axis
The both ends of bearing assembly are respectively provided with the first step for supporting the bearing assembly and bearing locking block, are set on shaft core right end cap
There is the block for abutting first bearing group, to which bearing assembly be firmly fixed in the axial direction so that main shaft has high-accuracy, high
Rigidity, run at high speed the features such as steady, service life is long, good processing superiority.
2. the high-precision numerical control of the present invention walks heart machine tool chief axis, left end cap has third platform around bearing locking block cutting
Rank, shaft core are equipped with corresponding first convex block；Second step is equipped with open horizontal towards the first right groove, and the first convex block is equipped with
Corresponding first lug boss, and the first lug boss level is connected in the first groove.Such structure setting so that shaft core and the right side
Labyrinth structure is formed between end cap, prevents dust from entering first bearing group by the gap between shaft core and right end cap；First
The outer surface of convex block is circumferentially equipped with the first V-shaped groove, can form air-flow when high speed operation rotates, further increase dust-proof
Ability.
3. the high-precision numerical control of the present invention walks heart machine tool chief axis, right end cap is equipped with the osculum being vertically arranged, osculum
Water outlet mouth down, and the osculum is connected with the first V-shaped groove and the first groove, and the position of the water inlet of osculum, which is equipped with, to be expanded
Mouthful so that drain function is safer, reliable.
Description of the drawings
Fig. 1 is the schematic cross-section that high-precision numerical control of the present invention walks heart machine tool chief axis；
Fig. 2 is the enlarged diagram at A in Fig. 1；
Fig. 3 is the enlarged diagram at B in Fig. 1；
In figure：11, main shaft body；111, sealing ring；112, principal shaft locking block；113, convex wall；12, shaft core；121, axial
Through-hole；122, taper surface；123, first step；124, the first convex block；125, the first lug boss；21, first bearing group；22,
Two bearing groups；23, bearing spacer；24, bearing locking block；241, the second V-shaped groove；242, the second convex block；243, the second lug boss；
25, bearing positioning sleeve；31, right end cap；311, the first V-shaped groove；312, the first osculum；313, it is flared；314, block；315,
One groove；316, second step；317, the second osculum；32, left end cap；321, the second groove；322, third step；40, it drives
Driving wheel；50, encoder gear disk；61, positioning key；62, positioning pin；70, Workpiece clamping head converts end cap；80, lathe.
Specific implementation mode
In the following, in conjunction with attached drawing and specific implementation mode, the present invention is described further：
In following implementation, described "left", "right" etc. is described as relative to described in the direction in Fig. 1.
Embodiment 1
As shown in Figs. 1-3, it is that high-precision numerical control of the invention walks heart machine tool chief axis, including main shaft body 11, shaft core 12, axis
Bearing assembly, right end cap 31 and the driving wheel 40 being installed in shaft core 12；
One end of main shaft body 11 is fixed on by fixing piece on lathe 80, and the other end is equipped with principal shaft locking block 112, passes through
11 firm locking of main shaft body is fixed on lathe 80 by the principal shaft locking block 112.
Bearing assembly is socketed in the shaft core 12, and main shaft body 11 is socketed on bearing assembly, and shaft core 12 passes through the axis
Bearing assembly is rotatablely connected with main shaft body 11.
The bearing assembly includes the first bearing group 21 being set in side by side successively from right-to-left in shaft core 12, bearing spacer
23, second bearing group 22；First bearing group 21 and second bearing group 22 installed using back-to-back mode by two ball bearings and
At equipped with bearing positioning sleeve 25 between two ball bearings；The right end of first bearing group 21 is equipped with first step 123, first bearing
The right side of group 21 is connected at the first step 123；The left end of second bearing group 22 is equipped with the bearing being fixed in shaft core 12
Latch segment 24, the bearing locking block 24 are connected to the left side of second bearing group 22.One end of bearing spacer 23 is connected to first
The inner ring of bearing group 21, the other end are connected to the inner ring of second bearing group 22.The inner wall of main shaft body 11 is equipped with a convex wall
113, the right end of the convex wall 113 is connected to the left side of first bearing group 21, between left end and the right side of second bearing group 22
There are certain gaps so that the outer ring of second bearing group 22 is in the state floated.
Right end cap 31 is socketed in shaft core 12, and is fixed on the right side of main shaft body 11, and right end cap 31 and shaft core
There are certain gaps between 12；The left side of the right end cap 31 is equipped with a block 314, and the block 314 is connected to the
On the right side of one bearing group 21；
Right end cap 31 has second step 316, shaft core 12 to be equipped with for offseting with second step 316 around the cutting of the shaft core 12
The first convex block 124 connect；Preferably, second step 316 is equipped with open horizontal towards the first right groove 315, the first convex block 124
It is equipped with corresponding first lug boss 125, and 125 level of the first lug boss is connected in the first groove 315；Such structure
Setting so that form labyrinth structure between shaft core 12 and right end cap 31, prevent dust from passing through between shaft core 12 and right end cap 31
Gap enters first bearing group 21；It is circumferentially equipped with the first V-shaped groove 311 in the outer surface of the first convex block 124, is revolved in high speed operation
Air-flow can be formed when turning, and further increase dust-proof ability.The right side of main shaft body 11 is equipped with sealing ring 111, this is close
Seal 111 plays good sealing protection to first bearing group 21.Right end cap 31 is equipped with the first osculum being vertically arranged
312 and second osculum 317, downward, and water outlet is connected with the first V-shaped groove 311 and the first groove 315 water outlet respectively
It is logical；The position of the water inlet of first osculum and 312 second osculums 317 is equipped with flaring 313, increases the ability of draining, arranges
Water effect is safer, reliable.
The left end of main shaft body 11 is also equipped with left end cap 32, left end cap 32 be socketed in shaft core 12 and with bearing locking block
24 clearance fits；Left end cap 32 has third step 322 around the cutting of bearing locking block 24；Bearing locking block 24 is equipped with and is used for and third
The outer surface of the second convex block 242 that step 322 abuts against, the second convex block 242 is circumferentially equipped with the second V-shaped groove 241.Preferably,
Third step 322 is equipped with open horizontal towards the second left groove 321, and the second convex block 242 is equipped with corresponding second lug boss
243, which is connected in second groove 321.
An axially extending bore 121, axially extending bore 121 and 12 coaxial line of shaft core are opened up inside shaft core 12；Axially extending bore 121 is used for
Fixing sleeve thick stick, for fixing Workpiece clamping head, the mode that thread connection can be used is fixed in shaft core 12 the set thick stick.Shaft core 12
It is equipped with locating piece, the setting angle of quick positioning sleeve thick stick is used for, prevents abnormal skidding, the preferred locating piece is positioning pin
62。
Driving wheel 40 is installed in shaft core 12, for driving shaft core 12 to rotate；Encoder gear disk is also equipped in shaft core 12
50, encoder gear disk 50 is located between bearing locking block 24 and driving wheel 40.It is provided with keyway in shaft core 12, for installing positioning
Key 61, positioning key 61 is for positioning and regular coding toothed disc 50 and driving wheel 40.
The right end of axially extending bore 121 is equipped with taper surface 122, and the taper surface 122 is for positioning Workpiece clamping head.A left side for shaft core 12
End is equipped with Workpiece clamping head pine drawing mechanism (not shown), which can be big according to processing bar excircle dimension
It is small, mating collet is selected, realizes clamping and the conveying function of processing bar.The right end of shaft core 12 is equipped with Workpiece clamping head end of convert
Lid 70, it can be achieved that different size model collet matching.
The high-precision numerical control of the present invention walks heart machine tool chief axis when mounted, is first installed to main shaft body corresponding matched
Numerically-controlled machine tool equipment, right end are fixed on lathe, and main shaft is locked by principal shaft locking block, is fixed by left end completely；Then will
Set thick stick is installed in axially extending bore, and Workpiece clamping head is installed on the right end of set thick stick, in the left part of shaft core installation Workpiece clamping head pine
Drawing mechanism；Then it is rotated by external motor drive driving wheel, the rotation of synchronous drive shaft core, to realize the rotation of workpiece,
The feeding parameter for regulating and controlling all kinds of model process tools by digital control system again, to realize the vehicle of part, bore, attack, boring, engraving etc.
Processing.
The high-precision numerical control of the present invention walks heart machine tool chief axis, and the first bearing group and second bearing group being assemblied in shaft core are equal
For the high-accuracy ball bearing installed using back-to-back mode, wherein in first bearing group, bearing outer ring axial direction interference fastens, and second
In bearing group, bearing outer ring floats；Two bearings group inner ring axial direction interference fastens, axial rigidity >=170N/ μm, and radial rigidity >=
130N/ μm, rotating accuracy≤0.0015 of axially extending bore right end taper surface, run at high speed vibration values≤0.8mm/s.Therefore, originally
The machine tool chief axis of invention has high-accuracy, high rigidity, runs at high speed that steady, service life is long, the spies such as good processing superiority
Point.
It will be apparent to those skilled in the art that technical solution that can be as described above and design, make various other
Corresponding change and deformation, and all these changes and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (9)
1. a kind of high-precision numerical control walks heart machine tool chief axis, including main shaft body, shaft core, bearing assembly, right end cap and it is installed on axis
Driving wheel on core, which is characterized in that
One end of the main shaft body is fixed on by fixing piece on lathe, and the other end lock onto lathe by principal shaft locking block
On；
The bearing assembly is socketed in the shaft core, and the main shaft body is socketed on the bearing assembly；
The bearing assembly includes the first bearing group being set in side by side successively from right-to-left in shaft core, bearing spacer, the second axis
Hold group；The both ends of the bearing assembly are respectively provided with the first step for supporting the bearing assembly and bearing locking block；
The right end cap be socketed in shaft core and with shaft core clearance fit, which is fixed on the right side of main shaft body；
The left side of the right end cap is equipped with a block, and the block is connected on the right side of first bearing group；
The inner wall of the main shaft body is equipped with a convex wall, and the right end of the convex wall is connected to the left side of first bearing group, left end
With the right side clearance fit of second bearing group；
The right end cap has second step around shaft core cutting；The shaft core is equipped with for abutting against with the second step
The outer surface of first convex block, first convex block is circumferentially equipped with the first V-shaped groove.
2. high-precision numerical control as described in claim 1 walks heart machine tool chief axis, which is characterized in that the first bearing group and second
Bearing group is installed back-to-back by two ball bearings.
3. high-precision numerical control as claimed in claim 2 walks heart machine tool chief axis, which is characterized in that the first bearing group and second
In bearing group, the bearing positioning sleeve being located in shaft core, the bearing positioning sleeve are equipped between two ball bearings installed back-to-back
It is connected to respectively on the end face of described two ball bearings.
4. high-precision numerical control as described in claim 1 walks heart machine tool chief axis, which is characterized in that the second step is equipped with and opens
The horizontal saliva of mouth is flat towards the first right groove, and first convex block is equipped with corresponding first lug boss, and the first lug boss horizontal card
It is connected in first groove.
5. high-precision numerical control as claimed in claim 4 walks heart machine tool chief axis, which is characterized in that the right end cap is equipped with vertical
The first osculum being arranged, the water outlet mouth down of first osculum, and the first osculum is connected with the first V-shaped groove.
6. high-precision numerical control as claimed in claim 5 walks heart machine tool chief axis, which is characterized in that be additionally provided on right end cap and set vertically
The second osculum set, the water outlet mouth down of second osculum, and the second osculum is connected with the first groove.
7. as high-precision numerical control described in claim 5 or 6 walks heart machine tool chief axis, which is characterized in that first osculum
The position of the water inlet of the position of water inlet and the second osculum is equipped with a flaring.
8. high-precision numerical control as described in claim 1 walks heart machine tool chief axis, which is characterized in that the high-precision numerical control walks the heart
Machine tool chief axis further includes the left end cap for being installed on main shaft body left end, the left end cap be socketed in shaft core and with bearing locking block
Clearance fit；The left end cap has third step around bearing locking block cutting；The bearing locking block be equipped with for institute
The second convex block that third step abuts against is stated, the outer surface of second convex block is circumferentially equipped with the second V-shaped groove.
9. high-precision numerical control as claimed in claim 8 walks heart machine tool chief axis, which is characterized in that the third step is equipped with and opens
The horizontal saliva of mouth is flat towards the second left groove, and second convex block is equipped with corresponding second lug boss, the second lug boss level clamping
In second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610832627.2A CN106270575B (en) | 2016-09-19 | 2016-09-19 | A kind of high-precision numerical control walks heart machine tool chief axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610832627.2A CN106270575B (en) | 2016-09-19 | 2016-09-19 | A kind of high-precision numerical control walks heart machine tool chief axis |
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| Publication Number | Publication Date |
|---|---|
| CN106270575A CN106270575A (en) | 2017-01-04 |
| CN106270575B true CN106270575B (en) | 2018-10-09 |
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ID=57713013
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610832627.2A Active CN106270575B (en) | 2016-09-19 | 2016-09-19 | A kind of high-precision numerical control walks heart machine tool chief axis |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881615A (en) * | 2017-04-11 | 2017-06-23 | 台州北平机床有限公司 | Floating clamp |
| CN107214554B (en) * | 2017-06-13 | 2023-05-09 | 嘉兴北崎机器人有限公司 | Composite walking spindle |
| TWI759182B (en) * | 2021-04-22 | 2022-03-21 | 御成工業有限公司 | Spindle structure |
| CN114102095A (en) * | 2021-11-12 | 2022-03-01 | 天津祝融精密机械有限公司 | High-precision numerical control center-walking machine tool spindle |
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| JPH10202402A (en) * | 1997-01-20 | 1998-08-04 | Matsuura Kikai Seisakusho:Kk | Spindle support structure of machine tool |
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|---|---|---|---|---|
| CN201505729U (en) * | 2009-09-04 | 2010-06-16 | 简东灿 | Structure of bored shaft |
| CN201988723U (en) * | 2011-03-28 | 2011-09-28 | 广州市昊志机电有限公司 | Lower bearing block mechanism of high-speed motor spindle |
| CN102513554A (en) * | 2011-12-23 | 2012-06-27 | 上海三一精机有限公司 | Turning-milling combined machine tool and spindle locking device thereof |
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| CN106270575A (en) | 2017-01-04 |
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Denomination of invention: High-precision numerical-control centerless machine tool spindle Effective date of registration: 20191030 Granted publication date: 20181009 Pledgee: China Co. truction Bank Corp Guangzhou Tianhe subbranch Pledgor: GUANGZHOU HAOZHI INDUSTRIAL Co.,Ltd. Registration number: Y2019440000162 |
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