CN108188416B - A kind of high leakproofness direct-connected main shaft - Google Patents
A kind of high leakproofness direct-connected main shaft Download PDFInfo
- Publication number
- CN108188416B CN108188416B CN201711332741.XA CN201711332741A CN108188416B CN 108188416 B CN108188416 B CN 108188416B CN 201711332741 A CN201711332741 A CN 201711332741A CN 108188416 B CN108188416 B CN 108188416B
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- China
- Prior art keywords
- sealing
- main shaft
- central spindle
- direct
- high leakproofness
- 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.)
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- 238000007789 sealing Methods 0.000 claims abstract description 101
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000000306 component Substances 0.000 description 13
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000020347 spindle assembly Effects 0.000 description 1
- 230000003068 static effect Effects 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
- 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
Abstract
The invention discloses a kind of high leakproofness direct-connected main shafts, including cylinder block set, it is respectively arranged in the upper end cover and lower cover at cylinder block set both ends, it is rotatablely installed the central spindle in cylinder block set, closed type chamber is respectively formed between upper end cover and lower cover and central spindle, high leakproofness direct-connected main shaft further includes uniformly distributed sealing inner sleeve, sealing ring and sealing dish ring pads, uniformly sealing inner sleeve is located at closed type chamber side and gas source enters closed type chamber from uniformly distributed sealing inner sleeve and forms air curtain sealing, sealing ring is located at closed type chamber one end and is interference fitted to form sealing with central spindle, if sealing dish ring pads includes dry weight dish ring pads, sealing dish ring pads are located at the closed type chamber other end and cooperatively form tooth labyrinth seal with central spindle.
Description
Technical field
The present invention relates to numerical control processing field more particularly to a kind of high leakproofness direct-connected main shafts.
Background technique
Machine tool chief axis refers to the axis that workpiece or cutter rotation are driven on lathe, in addition to the main motions such as planer, broaching machine are straight line
Outside the lathe of movement, most of lathes have spindle unit.The major function of spindle unit has: 1, guaranteeing rigidity of support；2, it protects
It demonstrate,proves rotating accuracy (circular runout precision and axial float precision)；3, connection function (chuck, floral disc etc.)；4, inner cone and end face
Wearability (rigidity requirement)；5, to the static balance of spindle assemblies and dynamic balancing.
Currently, most machine tool chief axis are belt or mechanical direct connection main shaft on the market, gear type main shaft has been gradually backed out
Stage, and electro spindle is just constantly extended volume growth with its unique advantage.The motor of Belt spindle passes through in main shaft back upper place
The components such as belt, attachment base connect main shaft；The motor and main shaft of direct-connected main shaft connect main shaft by shaft coupling in same axis；
The motor of electro spindle is assemblied in inside main shaft, is combined into one with main shaft.Main shaft couples two kinds of mechanical attachment sides with driving motor
Formula: 1, associated mode, driving motor+shaft coupling+main shaft；2, gear graduation type, driving motor+shaft coupling+gearbox+shaft coupling+
Main shaft.It can prevent free gap between motor and main shaft by shaft coupling connection, while the plastic deformation of shaft coupling is also very
It is small, so precise angular positions are higher；Thermal stability is also relatively preferable；Since the vibration slow-speed of revolution is high, so machining accuracy compares skin
Band main shaft is high.Machine tool chief axis equipment totle drilling cost=main shaft and accessory cost+maintenance operation cost+cost of labor simultaneously.
Currently, since domestic machine tool is started late, by limiting factors such as technology closing, policies, equipment is mainly still
Carry out meet demand by import, therefore mating core component especially main shaft etc. is almost blank.With Chinese national economy
It continues to develop, manufacturing industry equips the demand space that the degree of automation is continuously improved and market is strong, currently, domestic matched equipment
Quick, steady development is obtained, direct connection high-speed main spindle equipment achieves good market application effect.
But existing main shaft has the following deficiencies:
1, main shaft lower end only has air curtain sealing, and air-tightness is inadequate, there is gas kinetic energy loss, need to provide energy always,
Consume electric energy；2, sealing performance is to be improved, and part metals cutting fluid can enter between main shaft bearing around spindle nose baffle
In gap, and then reduce the performance and used life of main shaft bearing；3, main shaft upper end is limited to main shaft space structure and there was only a weight
Sealing, increases quantity of gas leakage, improves main shaft maintenance operation cost.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of high leakproofness of favorable sealing property
Direct-connected main shaft.
The purpose of the present invention is implemented with the following technical solutions:
A kind of high leakproofness direct-connected main shaft including cylinder block set, is respectively arranged in the upper end cover at the cylinder block set both ends
And lower cover, rotational installation are equal between the central spindle of the cylinder block set, the upper end cover and the lower cover and the central spindle
Closed type chamber is formed, the high leakproofness direct-connected main shaft further includes uniformly distributed sealing inner sleeve, sealing ring and seals dish ring pads, described equal
Cloth sealing inner sleeve is located at closed type chamber side and gas source is from the inner sleeve that uniformly seals into the closed type chamber and shape
It is sealed at air curtain, the sealing ring is located at closed type chamber one end and is interference fitted to form sealing with the central spindle, described close
If sealing dish ring pads includes dry weight dish ring pads, the sealing dish ring pads are located at the closed type chamber other end and cooperate with the central spindle
Form tooth labyrinth seal.
Further, the sealing ring is equipped with several seal grooves, forms tip, the tip between every two adjacent seal groove
It is interference fitted with the central spindle.
Further, the sealing slot cross-section is trapezoidal.
Further, the tip section is triangular in shape.
Further, the sealing ring is made of polytetrafluoroethylene (PTFE).
Further, the sealing dish ring pads include triple dish ring pads, and each dish ring pads are made of metal.
Further, the central spindle includes double wedge, and the upper end cover is equipped with groove, and the double wedge is located at shape in the groove
At contactless labyrinth seal.
Further, the labyrinth seal at the upper end cover and sealing ring sealing are located at the same end of the central spindle
The tooth labyrinth seal in face, the sealing dish ring pads is located at the other end of the central spindle, and two end faces are vertical, the upper end cover
The labyrinth seal at place is located between sealing ring sealing and the tooth labyrinth seal of the sealing dish ring pads.
Further, the air curtain sealing at the lower cover is located at the sealing tooth labyrinth seal of dish ring pads and described close
Between seal sealing.
Compared with prior art, it is respectively formed between the upper end cover and lower cover and central spindle of high leakproofness direct-connected main shaft of the present invention close
Envelope type chamber, uniformly sealing inner sleeve is located at closed type chamber side and gas source enters closed type chamber from uniformly distributed sealing inner sleeve and forms gas
Curtain sealing, sealing ring are located at closed type chamber one end and are interference fitted to form sealing with central spindle, if sealing dish ring pads include dry weight dish
Ring pads, sealing dish ring pads are located at the closed type chamber other end and cooperatively form tooth labyrinth seal with central spindle.
Detailed description of the invention
Fig. 1 is a structural schematic diagram of high leakproofness direct-connected main shaft of the present invention；
Fig. 2 is another structural schematic diagram of the high leakproofness direct-connected main shaft of Fig. 1；
Fig. 3 is the enlarged drawing at the high leakproofness direct-connected main shaft A of Fig. 2；
Fig. 4 is the enlarged drawing at the high leakproofness direct-connected main shaft B of Fig. 2.
In figure: 100, high leakproofness direct-connected main shaft；10, cylinder block set；20, lower cover；22, ring air drain；30, upper end cover；
32, groove；40, central spindle；42, double wedge；50, inner sleeve is uniformly sealed；60, closed type chamber；70, sealing ring；72, seal groove；80, close
Seal dish ring pads；90, contactless labyrinth seal.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it
It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
A kind of high leakproofness direct-connected main shaft 100 includes cylinder block set 10, lower cover 20, upper end cover referring to FIG. 1 to FIG. 4,
30, central spindle 40, uniformly sealing inner sleeve 50, sealing ring 70, sealing dish ring pads 80.
Lower cover 20 is equipped with ring air drain 22.Upper end cover 30 is equipped with groove 32.Central spindle 40 includes several double wedges 42.
Uniformly sealing inner sleeve 50 be one kind can be the closed gas curtain type chamber that central spindle 40 provides uniform pressure high abrasion it is resistance to
Inner sleeve is pressed, which is evenly distributed with annular groove, provides steady pressure, and air curtain sealing effect is good.10 side wall of outer shell of cylinder block set is equipped with air inlet
Mouthful, the bottom face of 10 shell of cylinder block set is equipped with the short slot being connected to air inlet.Lower cover 20 and upper end cover 30 and cylinder block set
It is equipped with the first ring air drain between the fitting surface of 10 shells, is evenly provided with inside lower cover 20 and upper end cover 30 along its circumferencial direction
The escape pipes of the first ring air drain of multiple connections, the inner sleeve hole wall of lower cover 20 and upper end cover 30, which is equipped with, is connected to the of multiple escape pipes
Two ring air drains.
Sealing ring 70 is equipped with several seal grooves 72, forms a tip between every two adjacent seal groove 72.In one embodiment,
72 section of seal groove is trapezoidal.Tip section is triangle.Sealing ring 70 is made of PTFE (polytetrafluoroethylene (PTFE)) material.Sealing ring
70 be axis sealing unit, and section is two groups of ladder-type troughs, PTFE seal circle 70 and 40 rear surface Interference contact of central spindle, and PTFE is close
Seal 70 can play good sealing effect by the adjustment with central spindle 40.Because PTFE material coefficient of friction is extremely low, the sealing list
Member has the requirement and the good gas-tight of sealing effect that reduce friction, reduction to setting-up eccentricity and axis jerk value, is suitable for
Feature under hot conditions use is applicable not only to gas class sealing, has to the sealing of grease-like liquid, aqueous solution and dust
Good sealing function.
Sealing dish ring pads 80 includes several dish ring pads.Dish ring pads are made of metal.In one embodiment, dish ring pads 80 are sealed
For triple seal metal stamper ring pads, metal stamper ring pads form 90 degree of tooth labyrinth seals, and quantity of gas leakage is small, substantially increases metal
The integral sealing reliability of ring pads.
When assembling high leakproofness direct-connected main shaft 100, lower cover 20 and upper end cover 30 are installed on opposite the two of cylinder block set 10
End.Central spindle 40 is rotatablely installed in cylinder block set 10.Closed type chamber is respectively formed between central spindle 40 and lower cover 20 and upper end cover 30
60.In closed type chamber 60 between lower cover 20 and central spindle 40, gas source enters 60 shape of closed type chamber by uniformly sealing inner sleeve 50
It is sealed at air curtain, gas-tight, so that central spindle 40 be made to obtain more preferably air curtain sealing effect.Sealing ring 70 is sheathed on central spindle 40
One end and tip and central spindle 40 are interference fitted, and realize sealing.Sealing dish ring pads 80 also are located at the close of lower cover 20 and central spindle 40
60 other end of envelope type chamber realizes tooth labyrinth seal.Uniformly sealing inner sleeve 50 is located between sealing dish ring pads 80 and sealing ring 70.By
Closed type chamber 60 between this lower cover 20 and central spindle 40 is completely sealed.
In closed type chamber 60 between upper end cover 30 and central spindle 40, gas source enters closed type chamber by uniformly sealing inner sleeve 50
60 form air curtain sealing, gas-tight, so that central spindle 40 be made to obtain more preferably air curtain sealing effect.The double wedge of central spindle 40 42
In the groove 32 of upper end cover 30, non-contacting seal is realized.Sealing ring 70 is sheathed on 30 one end of upper end cover and tip and axis
Core 40 is interference fitted, and realizes sealing.Sealing dish ring pads 80 also are located at 60 other end of closed type chamber of upper end cover 30 Yu central spindle 40, real
Existing tooth labyrinth seal.Sealing ring 70 and double wedge 42 are located at an end face of central spindle 40 at this time, and sealing dish ring pads 80 are located at central spindle 40
Another end face, two end faces are mutually perpendicular to.Thus the closed type chamber 60 between upper end cover 30 and central spindle 40 is completely sealed.
By sealing between the sealing and upper end cover 30 and central spindle 40 between lower cover 20 and central spindle 40, air curtain sealing is reduced
Operation expense can be greatly lowered in leakage rate 90%, to realize that main shaft comprehensive performance reaches good utilization benefit.
It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas
Corresponding change and deformation, and all these changes and deformation all should belong to the protection scope of the claims in the present invention
Within.
Claims (8)
1. a kind of high leakproofness direct-connected main shaft, including cylinder block set, be respectively arranged in the cylinder block set both ends upper end cover and
Lower cover, rotational installation equal shape between the central spindle of the cylinder block set, the upper end cover and the lower cover and the central spindle
At closed type chamber, it is characterised in that: the high leakproofness direct-connected main shaft further includes uniformly distributed sealing inner sleeve, sealing ring and sealing dish ring
Pad, the uniformly sealing inner sleeve is located at closed type chamber side and gas source is from the inner sleeve that uniformly seals into the sealing
Type chamber simultaneously formed air curtain sealing, the sealing ring be located at closed type chamber one end and be interference fitted with the central spindle to be formed it is close
Envelope, if the sealing dish ring pads include dry weight dish ring pads, the sealing dish ring pads be located at the closed type chamber other end and with institute
It states central spindle and cooperatively forms tooth labyrinth seal；The central spindle includes double wedge, and the upper end cover is equipped with groove, and the double wedge is located at described
Contactless labyrinth seal is formed in groove, the labyrinth seal at the upper end cover is located at sealing ring sealing and the sealing
Between the tooth labyrinth seal of dish ring pads.
2. high leakproofness direct-connected main shaft according to claim 1, it is characterised in that: if the sealing ring is equipped with dry seal
Slot, forms tip between every two adjacent seal groove, and the tip and the central spindle are interference fitted.
3. high leakproofness direct-connected main shaft according to claim 2, it is characterised in that: the sealing slot cross-section is trapezoidal.
4. high leakproofness direct-connected main shaft according to claim 2, it is characterised in that: the tip section is triangular in shape.
5. high leakproofness direct-connected main shaft according to claim 1, it is characterised in that: the sealing ring is by polytetrafluoroethylene (PTFE) system
At.
6. high leakproofness direct-connected main shaft according to claim 1, it is characterised in that: the sealing dish ring pads include triple dish
Ring pads, each dish ring pads are made of metal.
7. high leakproofness direct-connected main shaft according to claim 1, it is characterised in that: labyrinth seal at the upper end cover and
The sealing ring sealing is located at the same end face of the central spindle, and the tooth labyrinth seal of the sealing dish ring pads is located at the central spindle
Other end, two end faces are vertical.
8. high leakproofness direct-connected main shaft according to claim 1, it is characterised in that: the air curtain sealing position at the lower cover
Between the tooth labyrinth seal and sealing ring sealing of the sealing dish ring pads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711332741.XA CN108188416B (en) | 2017-12-13 | 2017-12-13 | A kind of high leakproofness direct-connected main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711332741.XA CN108188416B (en) | 2017-12-13 | 2017-12-13 | A kind of high leakproofness direct-connected main shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108188416A CN108188416A (en) | 2018-06-22 |
| CN108188416B true CN108188416B (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711332741.XA Active CN108188416B (en) | 2017-12-13 | 2017-12-13 | A kind of high leakproofness direct-connected main shaft |
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| CN (1) | CN108188416B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226791A (en) * | 2018-11-21 | 2019-01-18 | 陕西海力特精密机械有限公司 | The sealing structure of digital control machine tool tailstock live spindle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113105A (en) * | 1998-05-11 | 2000-09-05 | Merrick Industries, Inc. | Rotary shaft bearing isolator seal for dry comminuted materials |
| CN106246925A (en) * | 2016-08-29 | 2016-12-21 | 北京超同步伺服股份有限公司 | Labyrinth type machine tool chief axis air curtain protection device |
| CN106763797A (en) * | 2017-03-23 | 2017-05-31 | 马鞍山市恒永利机械科技有限公司 | The air curtain generation unit and rotary shaft gas sealing mechanism of a kind of hermetic seal |
| CN106826548A (en) * | 2017-02-13 | 2017-06-13 | 福建省正丰数控科技有限公司 | Grinding machine spindle high pressure air seal structure |
| CN206487876U (en) * | 2017-02-23 | 2017-09-12 | 亚资科技股份有限公司 | A kind of novel labyrinth main shaft device |
| CN206571984U (en) * | 2017-03-23 | 2017-10-20 | 马鞍山市恒永利机械科技有限公司 | The air curtain generation unit and rotary shaft gas sealing mechanism of a kind of hermetic seal |
-
2017
- 2017-12-13 CN CN201711332741.XA patent/CN108188416B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113105A (en) * | 1998-05-11 | 2000-09-05 | Merrick Industries, Inc. | Rotary shaft bearing isolator seal for dry comminuted materials |
| CN106246925A (en) * | 2016-08-29 | 2016-12-21 | 北京超同步伺服股份有限公司 | Labyrinth type machine tool chief axis air curtain protection device |
| CN106826548A (en) * | 2017-02-13 | 2017-06-13 | 福建省正丰数控科技有限公司 | Grinding machine spindle high pressure air seal structure |
| CN206487876U (en) * | 2017-02-23 | 2017-09-12 | 亚资科技股份有限公司 | A kind of novel labyrinth main shaft device |
| CN106763797A (en) * | 2017-03-23 | 2017-05-31 | 马鞍山市恒永利机械科技有限公司 | The air curtain generation unit and rotary shaft gas sealing mechanism of a kind of hermetic seal |
| CN206571984U (en) * | 2017-03-23 | 2017-10-20 | 马鞍山市恒永利机械科技有限公司 | The air curtain generation unit and rotary shaft gas sealing mechanism of a kind of hermetic seal |
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| Publication number | Publication date |
|---|---|
| CN108188416A (en) | 2018-06-22 |
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Application publication date: 20180622 Assignee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Assignor: GUANGZHOU HAOZHI INDUSTRIAL Co.,Ltd. Contract record no.: X2020980004919 Denomination of invention: A high sealing direct coupling spindle Granted publication date: 20190809 License type: Exclusive License Record date: 20200813 |
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Denomination of invention: A high sealing direct coupling spindle Effective date of registration: 20200814 Granted publication date: 20190809 Pledgee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Pledgor: GUANGZHOU HAOZHI INDUSTRIAL Co.,Ltd. Registration number: Y2020980005000 |
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Assignee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Assignor: GUANGZHOU HAOZHI INDUSTRIAL Co.,Ltd. Contract record no.: X2020980004919 Date of cancellation: 20220825 |
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Date of cancellation: 20220826 Granted publication date: 20190809 Pledgee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Pledgor: GUANGZHOU HAOZHI INDUSTRIAL Co.,Ltd. Registration number: Y2020980005000 |
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