CN106270575A - 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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- CN106270575A CN106270575A CN201610832627.2A CN201610832627A CN106270575A CN 106270575 A CN106270575 A CN 106270575A CN 201610832627 A CN201610832627 A CN 201610832627A CN 106270575 A CN106270575 A CN 106270575A
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- bearing
- numerical control
- machine tool
- end cap
- chief axis
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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)
- Machine Tool Units (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of high-precision numerical control and walk heart machine tool chief axis, including main shaft body, shaft core, bearing assembly, right end cap and driving wheel, one end of main shaft body is fixed on lathe by fixture, and the other end is lock onto on lathe by principal shaft locking block；Bearing assembly is socketed in shaft core, and main shaft body is socketed on bearing assembly；Clutch shaft bearing group that bearing assembly includes being set in the most side by side in shaft core, bearing spacer, the second bearing group；Bearing assembly be respectively arranged at two ends 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 provided with a block being connected to clutch shaft bearing group；The inwall of main shaft body is provided with a convex wall, and its right-hand member is connected to the left side of clutch shaft bearing group, the right side matched in clearance of left end and the second bearing group.The high-precision numerical control of the present invention walks heart machine tool chief axis, have high-accuracy, run up steadily, the feature of length in service life.
Description
Technical field
The present invention relates to digital control processing field high-accuracy, high efficiency, particularly relate to metal and the car 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 and once fill
Press from both sides multiple complex machining process requirement, be mainly used in high-accuracy small-sized batch five metals class part, axle 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 apparatus precision machining industry, with
The development of process of industrialization, for meeting the market requirement, the type equipment is gradually applied to social all kinds of manufacturing
The processing of product, particularly the Precision Machining of batch miniature parts, can improve working (machining) efficiency.At present, the heart is walked due to domestic numerical control
Lathe equipments is started late, and by limiting factors such as technology closing, policies, equipment is the most also dependent on import to meet demand, because of
The almost blank such as this supporting core component particularly main shaft.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of high-precision numerical control and walk scheming bed master
Axle, it has rigidity high-accuracy, high, run up the features such as steady, length in service life.
The purpose of the present invention realizes by the following technical solutions:
A kind of high-precision numerical control walks heart machine tool chief axis, including main shaft body, shaft core, bearing assembly, right end cap be installed on
Driving wheel in shaft core；
One end of described main shaft body is fixed on lathe by fixture, and the other end lock onto machine by principal shaft locking block
On bed；
Described bearing assembly is socketed in described shaft core, and described main shaft body is socketed on described bearing assembly；
Clutch shaft bearing group that described bearing assembly includes being set in the most side by side in shaft core, bearing spacer, the second bearing group；
Described bearing assembly be respectively arranged at two ends with the first step for supporting described bearing assembly and bearing locking block；
Described right end cap be socketed in shaft core and with shaft core matched in clearance, this right end cap is fixed on the right side of main shaft body
On；The left side of described right end cap is provided with a block, and described block is connected on the right side of clutch shaft bearing group；
The inwall of described main shaft body is provided with a convex wall, and the right-hand member of this convex wall is connected to the left side of clutch shaft bearing group,
The right side matched in clearance of left end and the second bearing group.
Preferably, described clutch shaft bearing group and the second bearing group are installed back-to-back by two ball bearings and are formed.
Preferably, in described clutch shaft bearing group and the second bearing group, between two ball bearings installed back-to-back, it is provided with ring
The bearing positioning sleeve being placed in shaft core, this bearing positioning sleeve is connected on the end face of said two ball bearing respectively.
Preferably, described right end cap is dug around described shaft core second step；Described shaft core is provided with for described second
The first projection that step abuts against, the outer surface of described first projection is circumferentially provided with the first V-shaped groove.
Preferably, described second step is provided with the open horizontal the first groove towards the right side, and it is right that described first projection is provided with
The first lobe answered, and this first lobe horizontal card is connected in described first groove.
Preferably, described right end cap is provided with the osculum being vertically arranged, the outlet of described osculum down, and this row
Water hole is connected with the first V-shaped groove.The second row water hole being vertically arranged, the water outlet in described second row water hole it is additionally provided with on right end cap
Mouth down, and second row water hole is connected with the first groove.
Preferably, the position of the water inlet in the position of the water inlet in first row water hole and second row water hole is equipped with an expansion
Mouthful.
Preferably, described high-precision numerical control is walked heart machine tool chief axis and is also included being installed on the left end cap of main shaft body left end,
Described left end cap is socketed in shaft core and coordinates with bearing locking block gap；Described left end cap is dug around described bearing locking block to be had
3rd step；Described bearing locking block is provided with the second projection for abutting against with described 3rd step, described second projection
Outer surface is circumferentially provided with the second V-shaped groove.
Preferably, described 3rd step is provided with the open horizontal the second groove towards a left side, and it is right that described second projection is provided with
The second lobe answered, this second lobe horizontal card is connected in described second groove.
Preferably, an axially extending bore, described axially extending bore and shaft core coaxial line are offered inside described shaft core；Described the most logical
Hole is used for installing set thick stick, and described set thick stick can use threaded mode to be fixed in shaft core.Preferably, shaft core is provided with location
Part, for the setting angle of quick positioning sleeve thick stick, prevents abnormal skidding.
Preferably, the right-hand member of described shaft core is provided with Workpiece clamping head conversion end cap.
Preferably, described high-precision numerical control walks the encoder gear dish that heart machine tool chief axis also includes being installed in shaft core, described
Encoder gear disk folder is located between bearing locking block and driving wheel.
Preferably, the right side of described main shaft body is provided with sealing ring.
Preferably, described shaft core having keyway, be used for installing positioning key, positioning key is for location and regular coding gear
Dish and driving wheel.
Preferably, the right-hand member of described axially extending bore is provided with taper surface, and this taper surface is used for positioning Workpiece clamping head.
Preferably, the left end of described shaft core is provided with Workpiece clamping head pine drawing mechanism, and this mechanism can be according to processing bar cylindrical
Size, selects supporting chuck, it is achieved the clamping of processing bar and conveying function.
Compared to existing technology, the beneficial effects of the present invention is:
1. the high-precision numerical control of the present invention walks heart machine tool chief axis, and bearing assembly is socketed in shaft core, and shaft core passes through bearing group
Part is rotationally connected with main shaft body, and sheathed clutch shaft bearing group the most arranged side by side, bearing spacer and the second bearing group in shaft core, at axle
Bearing assembly be respectively arranged at two ends with the first step for supporting described bearing assembly and bearing locking block, shaft core right end cap sets
There is the block abutting clutch shaft bearing group, thus firmly fix bearing assembly in the axial direction so that main shaft has high-accuracy, high
Rigidity, run up steadily, the feature such as length in service life, good processing superiority.
2. the high-precision numerical control of the present invention walks heart machine tool chief axis, and left end cap is dug around described bearing locking block the 3rd
Rank, shaft core is provided with the first projection of correspondence；Second step is provided with the open horizontal the first groove towards the right side, and the first projection is provided with
The first corresponding lobe, and the first lobe horizontal card is connected in the first groove.Such structure is arranged so that shaft core is with right
Forming labyrinth structure between end cap, the gap preventing dust from passing through between shaft core and right end cap enters clutch shaft bearing group；First
The outer surface of projection is circumferentially provided 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, and right end cap is provided with the osculum being vertically arranged, osculum
Outlet down, and this osculum is connected with the first V-shaped groove and the first groove, and the position of the water inlet of osculum is provided with expansion
Mouthful so that drain function is safer, reliable.
Accompanying drawing explanation
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 in Fig. 1 at A；
Fig. 3 is the enlarged diagram in Fig. 1 at B；
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 projection；125, the first lobe；21, clutch shaft bearing group；22,
Two bearing group；23, bearing spacer；24, bearing locking block；241, the second V-shaped groove；242, the second projection；243, the second lobe；
25, bearing positioning sleeve；31, right end cap；311, the first V-shaped groove；312, first row water hole；313, enlarging；314, block；315,
One groove；316, second step；317, second row water hole；32, left end cap；321, the second groove；322, the 3rd step；40, drive
Driving wheel；50, encoder gear dish；61, positioning key；62, alignment pin；70, Workpiece clamping head conversion end cap；80, lathe.
Detailed description of the invention
Below, in conjunction with accompanying drawing and detailed description of the invention, the present invention is described further:
In implementation below, described "left", "right" etc. is described as relative to described in the direction in Fig. 1.
Embodiment 1
As Figure 1-3, the high-precision numerical control for the present invention walks heart machine tool chief axis, including main shaft body 11, shaft core 12, axle
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 lathe 80 by fixture, and the other end is provided with principal shaft locking block 112, passes through
Main shaft body 11 firm locking is fixed on lathe 80 by this principal shaft locking block 112.
Bearing assembly is socketed in described shaft core 12, and main shaft body 11 is socketed on bearing assembly, and shaft core 12 is by this axle
Bearing assembly is rotationally connected with main shaft body 11.
Described bearing assembly includes clutch shaft bearing group 21, the bearing spacer being set in the most side by side in shaft core 12 from right-to-left
23, the second bearing group 22；Clutch shaft bearing group 21 and the second bearing group 22 used back-to-back modes to install by two ball bearings and
Become, between two ball bearings, be provided with bearing positioning sleeve 25；The right-hand member of clutch shaft bearing group 21 is provided with first step 123, clutch shaft bearing
The right side of group 21 is connected at this first step 123；The left end of the second bearing group 22 is provided with the bearing being fixed in shaft core 12
Latch segment 24, this bearing locking block 24 is connected to the left side of the second bearing group 22.One end of bearing spacer 23 is connected to first
The inner ring of bearing group 21, the other end is connected to the inner ring of the second bearing group 22.The inwall of main shaft body 11 is provided with a convex wall
113, the right-hand member of this convex wall 113 is connected to the left side of clutch shaft bearing group 21, between the right side of left end and the second bearing group 22
There is certain gap so that the outer ring of the second bearing group 22 is in the state of floating.
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
Certain gap is there is between 12；The left side of described right end cap 31 is provided with a block 314, and described block 314 is connected to
On the right side of one bearing group 21；
Right end cap 31 is dug around described shaft core 12 has second step 316, shaft core 12 to be provided with for offseting with second step 316
The first projection 124 connect；Preferably, second step 316 is provided with open horizontal towards the first right groove 315, the first projection 124
It is provided with the first lobe 125 of correspondence, and this first lobe 125 horizontal card is connected in the first groove 315；Such structure
Arrange 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 clutch shaft bearing group 21；Outer surface at the first projection 124 is circumferentially provided with the first V-shaped groove 311, revolves at high speed operation
Air-flow can be formed when turning, further increase dust-proof ability.The right side of main shaft body 11 is provided with sealing ring 111, and this is close
Seal 111 serves good sealing protection to clutch shaft bearing group 21.Right end cap 31 is provided with the first row water hole being vertically arranged
312 and second row water hole 317, the most down, and outlet is connected its outlet respectively with the first V-shaped groove 311 and the first groove 315
Logical；The position of the water inlet in first row water hole and 312 second row water holes 317 is provided with enlarging 313, adds the ability of draining, row
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 matched in clearance；Left end cap 32 is dug around bearing locking block 24 the 3rd step 322；Bearing locking block 24 is provided with for the 3rd
The second projection 242 that step 322 abuts against, the outer surface of the second projection 242 is circumferentially provided with the second V-shaped groove 241.Preferably,
3rd step 322 is provided with the open horizontal the second groove 321 towards a left side, and the second projection 242 is provided with the second lobe of correspondence
243, this second lobe 243 horizontal card is connected in described second groove 321.
The internal axially extending bore 121 of offering of shaft core 12, axially extending bore 121 and shaft core 12 coaxial line；Axially extending bore 121 is used for
Fixed cover thick stick, described set thick stick is used for fixing Workpiece clamping head, and it can use the mode of thread connection to be fixed in shaft core 12.Shaft core 12
Being provided with keeper, for the setting angle of quick positioning sleeve thick stick, preventing abnormal skidding, preferred described keeper is alignment pin
62。
Driving wheel 40 is installed in shaft core 12, is used for driving shaft core 12 to rotate；Encoder gear dish it is also equipped with in shaft core 12
50, encoder gear dish 50 is located between bearing locking block 24 and driving wheel 40.Have keyway in shaft core 12, be used for location is installed
Key 61, positioning key 61 is for location and regular coding toothed disc 50 and driving wheel 40.
The right-hand member of axially extending bore 121 is provided with taper surface 122, and this taper surface 122 is used for positioning Workpiece clamping head.A left side for shaft core 12
End is provided with Workpiece clamping head pine drawing mechanism (not shown), and this Workpiece clamping head pine drawing mechanism can be big according to processing bar excircle dimension
Little, select supporting chuck, it is achieved the clamping of processing bar and conveying function.The right-hand member of shaft core 12 is provided with Workpiece clamping head end of convert
Lid 70, can realize the coupling of different size model chuck.
The high-precision numerical control of the present invention walks heart machine tool chief axis when mounted, is first installed to main shaft body to mate accordingly
Digit Control Machine Tool equipment, its right-hand member is fixed on lathe, and main shaft is locked by principal shaft locking block, fixed by left end completely；Then will
Set thick stick is installed in axially extending bore, installs Workpiece clamping head on the right-hand member of set thick stick, installs Workpiece clamping head pine in the left part of shaft core
Drawing mechanism；Then being rotated by external motor-driven driving wheel, Timing Belt moving axis core rotates, thus realizes the rotation of workpiece,
Regulated and controled the feeding parameter of all kinds of model process tool again by digital control system, thus realize part car, bore, attack, boring, engraving etc.
Processing.
The high-precision numerical control of the present invention walks heart machine tool chief axis, and the clutch shaft bearing group and the second bearing group that are assemblied in shaft core are equal
For the high-accuracy ball bearing using back-to-back mode to install, wherein in clutch shaft bearing group, the axial interference of bearing outer ring fastens, and second
In bearing group, bearing outer ring floats；The axial interference of two bearings group inner ring fastens, its axial rigidity >=170N/ μm, and radial rigidity >=
130N/ μm, rotating accuracy≤0.0015 of axially extending bore right-hand member taper surface, run up vibration values≤0.8mm/s.Therefore, originally
The machine tool chief axis of invention have rigidity high-accuracy, high, run up steadily, service life long, the spy such as good processing superiority
Point.
It will be apparent to those skilled in the art that can technical scheme as described above and design, make other various
Corresponding change and deformation, and all these change and deformation all should belong to the protection domain of the claims in the present invention
Within.
Claims (10)
1. high-precision numerical control walks a heart machine tool chief axis, including main shaft body, shaft core, bearing assembly, right end cap be installed on axle
Driving wheel on core, it is characterised in that
One end of described main shaft body is fixed on lathe by fixture, and the other end lock onto lathe by principal shaft locking block
On；
Described bearing assembly is socketed in described shaft core, and described main shaft body is socketed on described bearing assembly；
Clutch shaft bearing group that described bearing assembly includes being set in the most side by side from right-to-left in shaft core, bearing spacer, the second axle
Hold group；Described bearing assembly be respectively arranged at two ends with the first step for supporting described bearing assembly and bearing locking block；
Described right end cap be socketed in shaft core and with shaft core matched in clearance, this right end cap is fixed on the right side of main shaft body；
The left side of described right end cap is provided with a block, and described block is connected on the right side of clutch shaft bearing group；
The inwall of described main shaft body is provided with a convex wall, and the right-hand member of this convex wall is connected to the left side of clutch shaft bearing group, left end
Right side matched in clearance with the second bearing group.
2. high-precision numerical control as claimed in claim 1 walks heart machine tool chief axis, it is characterised in that described clutch shaft bearing group and second
Bearing group is installed back-to-back by two ball bearings and is formed.
3. high-precision numerical control as claimed in claim 2 walks heart machine tool chief axis, it is characterised in that described clutch shaft bearing group and second
In bearing group, it is provided with, between two ball bearings installed back-to-back, the bearing positioning sleeve being located in shaft core, this bearing positioning sleeve
It is connected to respectively on the end face of said two ball bearing.
4. high-precision numerical control as claimed in claim 1 walks heart machine tool chief axis, it is characterised in that described right end cap is around described shaft core
Cutting has second step；Described shaft core is provided with the first projection for abutting against with described second step, described first projection
Outer surface is circumferentially provided with the first V-shaped groove.
5. high-precision numerical control as claimed in claim 4 walks heart machine tool chief axis, it is characterised in that described second step is provided with out
The horizontal saliva of mouth is flat towards the first right groove, and described first projection is provided with the first lobe of correspondence, and this first lobe horizontal card
It is connected in described first groove.
6. high-precision numerical control as claimed in claim 5 walks heart machine tool chief axis, it is characterised in that described right end cap is provided with vertically
The first row water hole arranged, down, and first row water hole is connected the outlet in described first row water hole with the first V-shaped groove.
7. high-precision numerical control as claimed in claim 6 walks heart machine tool chief axis, it is characterised in that is additionally provided with on right end cap and vertically sets
The second row water hole put, down, and second row water hole is connected the outlet in described second row water hole with the first groove.
High-precision numerical control the most as claimed in claims 6 or 7 walks heart machine tool chief axis, it is characterised in that described first row water hole
The position of the position of water inlet and the water inlet in second row water hole is equipped with an enlarging.
9. high-precision numerical control as claimed in claim 1 walks heart machine tool chief axis, it is characterised in that described high-precision numerical control walks the heart
Machine tool chief axis also includes the left end cap being installed on main shaft body left end, described left end cap be socketed in shaft core and with bearing locking block
Matched in clearance；Described left end cap is dug around described bearing locking block the 3rd step；Described bearing locking block be provided with for institute
Stating the second projection that the 3rd step abuts against, the outer surface of described second projection is circumferentially provided with the second V-shaped groove.
10. high-precision numerical control as claimed in claim 9 walks heart machine tool chief axis, it is characterised in that described 3rd step is provided with
Open horizontal is towards the second left groove, and described second projection is provided with the second lobe of correspondence, this second lobe horizontal card
It is connected in described 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 true CN106270575A (en) | 2017-01-04 |
| CN106270575B CN106270575B (en) | 2018-10-09 |
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ID=57713013
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Cited By (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 |
| CN107214554A (en) * | 2017-06-13 | 2017-09-29 | 嘉兴川页奇精密自动化机电有限公司 | It is combined away heart main shaft |
| 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 |
| TWI759182B (en) * | 2021-04-22 | 2022-03-21 | 御成工業有限公司 | Spindle structure |
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| CN204892986U (en) * | 2015-08-21 | 2015-12-23 | 无锡市三立轴承有限公司 | A main shaft structure for high precision 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 |
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| 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 |
| CN107214554A (en) * | 2017-06-13 | 2017-09-29 | 嘉兴川页奇精密自动化机电有限公司 | It is combined away heart main shaft |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106270575B (en) | 2018-10-09 |
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