CN101683714B - Spindle for machine tools - Google Patents
Spindle for machine tools Download PDFInfo
- Publication number
- CN101683714B CN101683714B CN2009101704148A CN200910170414A CN101683714B CN 101683714 B CN101683714 B CN 101683714B CN 2009101704148 A CN2009101704148 A CN 2009101704148A CN 200910170414 A CN200910170414 A CN 200910170414A CN 101683714 B CN101683714 B CN 101683714B
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- China
- Prior art keywords
- main shaft
- rake
- labyrinth
- chamber
- cooling fluid
- Prior art date
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Classifications
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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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
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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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
- B23Q11/0883—Protective coverings for parts of machine tools; Splash guards for spindles, e.g. for their bearings or casings
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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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
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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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to a spindle for machine tools, which includes a labyrinth box arranged between a main spindle cover and a end-face cover. The labyrinth box includes a first incline section formed on the end-face cover as well as a second incline section formed on the main spindle cover. The pressure of cooling liquid is reduced because of entering into the labyrinth box, thereby cooling liquid is uneasy to enter into the space between the main spindle and the main spindle shell. Inside the labyrinth box, the cooling liquid is attached to the first incline section and the second incline section. After cooling liquid attached to the second incline section slides towards the inner circumference along the incline, the cooling liquid drops into the first incline section. After cooling liquid attaches to the first incline section as well as cooling liquid drops into the first incline section slide towards the outer circumference along each incline, the cooling liquid drops outside the labyrinth box. By reducing cooling liquid entered into the labyrinth box, the main spindle device discharges the cooling liquid remained inside the labyrinth box for preventing cooling liquid from entering into the space between the main spindle and the main spindle shell.
Description
Technical field
The present invention relates to a kind of main shaft device of lathe, be provided with labyrinth part in the gap of the main shaft device of this lathe between main shaft and main shaft shell and prevent that cooling fluid from entering between main shaft and the main shaft shell.
Background technology
Lathe drives processing work by the instrument on the main shaft of being installed on is rotated.Main axis rotation is supported on the main shaft shell freely.Instrument is installed on the bottom of main shaft, and the bottom of this main shaft protrudes in the outside of main shaft shell.Lathe comprises coolant supply apparatus, and this coolant supply apparatus supplies to cooling fluid on the workpiece in the processing.Cooling fluid is eliminated the frictional heat that is produced between the instrument of rotation and the workpiece and is prevented that instrument and workpiece are overheated.The life-span of instrument and the machining accuracy of workpiece can improve by the supply of cooling fluid.
Cooling fluid is ejected on the workpiece and rebounds.The cooling fluid of rebounding enters in the gap between main shaft and the main shaft shell.The cooling fluid that enters arrives at the bearing of the inner support main shaft of main shaft shell and washes away the lubricating grease that lubricated this bearing is used.Therefore, the problem that has the durability decline of bearing.
The main shaft device of the lathe that day disclosure special permission communique is put down in writing for 2002-263982 number is provided with labyrinth part between main shaft and main shaft shell, and by preventing that from the ejection air of the gap between main shaft and the main shaft shell cooling fluid from entering between main shaft and the main shaft shell.
Main shaft has shield (end face lid), and this shield is fixed in the circumference of main shaft lower end.The main shaft shell has lid (mainshaft cap), and this lid is fixed on the lower end of main shaft shell.The upper surface of shield is relative with the lower surface of lid across the gap.Labyrinth part forms to be provided with a plurality of circular protrusions on the upper surface of form at shield of giving prominence to the lower surface of lid.Air arrives interior all sides of labyrinth part via the passage that is arranged between main shaft shell and the lid.This air via labyrinth part to the circulation of the peripheral direction of shield, from the opening ejection of the outer peripheral edges that are arranged at shield.
The labyrinth part of main shaft device in the past is formed between the lower surface of the upper surface of shield and lid, and the upper surface of described shield is relative on above-below direction with the lower surface of described lid.Cooling fluid is easy to accumulate between the circular protrusion that is arranged at the shield upper surface.Main shaft device in the past enters between main shaft and the main shaft shell not make cooling fluid by a large amount of circulations of air is washed away the outer circumferential side of shield to labyrinth part with the cooling fluid that accumulates.Because main shaft device in the past uses a large amount of air, therefore there is the operating cost problem of higher.
Summary of the invention
The object of the present invention is to provide a kind of main shaft device of lathe, the main shaft device of this lathe comprises can make cooling fluid be not easy to the labyrinth part that enters and make cooling fluid be not easy to accumulate, even the air capacity via labyrinth part is less, can prevent that also cooling fluid from entering between main shaft and the main shaft shell.
In the main shaft device of the lathe of technical scheme 1, the main shaft shell rotates supports main shaft freely, the bottom of described main shaft protrudes in the outside of described main shaft shell, and at the bottom of described main shaft erecting tools, comprise: mainshaft cap, this mainshaft cap is fixed in the lower end of described main shaft shell, and in the form of a ring; The end face lid, this end face lid is fixed in the outer peripheral portion of the bottom of described main shaft, and in the form of a ring; And labyrinth part, this labyrinth part is arranged at described mainshaft cap and covers part relative on above-below direction with described end face, described labyrinth part comprises the chamber, labyrinth, this chamber, labyrinth has first rake and second rake, described first rake is formed at described end face and covers, described second rake is formed on the described mainshaft cap, and described first rake is the inclination that its outer circumferential side is positioned at the below, and described second rake is the inclination that its outer circumferential side is positioned at the top.
Labyrinth part prevents that cooling fluid from entering between main shaft and the main shaft shell.The chamber, labyrinth descends the pressure of the cooling fluid that enters labyrinth part, and prevents that effectively cooling fluid from entering between main shaft and the main shaft shell.The cooling fluid that has entered the chamber, labyrinth is got back to the outside of labyrinth part by sliding along first rake and second rake.The cooling fluid of sliding along second rake is fallen the interior all rear flank at first rake, slides to the periphery side.
The main shaft device of the lathe of technical scheme 2 comprises that also nozzle forms parts, this nozzle forms the bottom that parts are fixed in described mainshaft cap, and in the form of a ring, outer circumferential side in chamber, described labyrinth has the groove of V font, and the groove of this V font is formed by interior circumferential portion and the described mainshaft cap that described nozzle forms parts.
A part that is splashed to the cooling fluid around the main shaft device is run into the groove of V font and is fallen down.Groove is disposed at the outside of chamber, labyrinth.The cooling fluid of running into groove and falling down can not enter the chamber, labyrinth, thereby can reduce the cooling liquid measure that enters the chamber, labyrinth.
In the main shaft device of the lathe of technical scheme 3, the groove of described V font has the 3rd rake and the 4th rake, described the 3rd rake is formed at described nozzle and forms on the parts, described the 4th rake is formed on the described mainshaft cap, described the 3rd rake is the inclination that its outer circumferential side is positioned at the below, and described the 4th rake is the inclination that its outer circumferential side is positioned at the top.
The groove of V font is formed by the 3rd rake and the 4th rake, and described the 3rd rake is formed at nozzle and forms on the parts, and described the 4th rake is formed on the mainshaft cap.The 3rd rake and the 4th rake are rightabout inclination respectively.The cooling fluid that is attached to the 3rd rake breaks away to periphery, and the cooling fluid that is attached to the 4th rake inwardly breaks away in week, can not enter the chamber, labyrinth.
The main shaft device of the lathe of technical scheme 4 comprises eaves portion, this eaves portion be formed at described end face lid peripheral part and with the relative form configuration in below of the groove of described V font, be formed with the 5th rake on the upper surface of described eaves portion, the 5th rake is the inclination that its outer circumferential side is positioned at the below.
A part that is splashed to the cooling fluid around the main shaft device is run into the eaves portion that is formed at end face lid peripheral part and is fallen down.Eaves portion reduces the cooling liquid measure of the part of the groove that arrives the V font, and then reduces the cooling liquid measure that enters the chamber, labyrinth.Run into the groove of V font and fall after the cooling fluid in the eaves portion is slided along the 5th rake, fall outer circumferential side in eaves portion.
In the main shaft device of the lathe of technical scheme 5 or 6, comprise that extraneous gas introduces the road, this extraneous gas is introduced the described labyrinth of road direction chamber interior and is introduced extraneous gas.
The pressure of labyrinth chamber interior roughly becomes atmospheric pressure by introducing extraneous gas.The pressure of cooling fluid descends because of entering the chamber, labyrinth, thereby cooling fluid is not easy to enter between main shaft and the main shaft shell.Can not supply with under the compressed-air actuated state, prevent that cooling fluid from entering between main shaft and the main shaft shell.Therefore, operating cost can be suppressed to lower.
Description of drawings
Fig. 1 is the side view of installment state of the main shaft device of expression lathe of the present invention.
Fig. 2 is the cutaway view of the leading section of main shaft and main shaft shell.
Fig. 3 is the amplification view of the leading section of main shaft and main shaft shell.
Fig. 4 is the amplification view of the leading section alter mode of expression main shaft and main shaft shell.
The specific embodiment
The present invention is described in detail below with reference to the accompanying drawing of representing preferred implementation.
As shown in Figure 1, main shaft device 1 of the present invention comprises main shaft shell 3, and this main shaft shell 3 is installed on the leading section (left end among Fig. 1) of spindle nose 2.Spindle nose 2 has two guide part 2a, 2a and a nut portions 2b at its base end part (right part among Fig. 1).Two guide part 2a, 2a are supported in spindle nose 2 on the pillar (not shown) of above-below direction, and this pillar is arranged on the lathe.The lead screw shaft of nut portions 2b and above-below direction (not shown) threaded engagement, this lead screw shaft is arranged on the pillar.Lead screw shaft is rotated by the driving of Z axle motor (not shown).Spindle nose 2 with nut portions 2b moves by the next direction (above-below direction) to this lead screw shaft of the rotation of lead screw shaft.Moving of the above-below direction of guide part 2a, 2a guiding spindle nose 2.
As shown in Figure 2, main shaft shell 3 heart portion therein rotates supports main shaft 11 freely, and cylindrical.Main shaft 11 is to the axle that extends towards upper and lower.Main shaft 11 rotates by the driving of spindle drive motor (not shown).The lower end of main shaft shell 3 is covered by the mainshaft cap 8 of ring-type.The a plurality of bolts of mainshaft cap 8 usefulness (not shown) are fixed on the lower surface of main shaft shell 3.The part of the lower surface of mainshaft cap 8 (being the part except interior circumferential portion and outer peripheral portion) is formed parts 12 by the nozzle of ring-type and covers.Nozzle forms a plurality of bolts of parts 12 usefulness (not shown) and is fixed on the lower surface of mainshaft cap 8.
As shown in Figure 2, nozzle form parts 12 its with mainshaft cap 8 between the cooling liquid chamber 12c of formation ring-type.Cooling liquid chamber 12c links to each other with the supply circuit (not shown) of cooling fluid.Nozzle forms parts 12 and have a plurality of nozzle bore 12b on the interior circumferential portion of its lower surface.A plurality of nozzle bore 12b link to each other with cooling liquid chamber 12c.Cooling fluid sprays downwards via cooling liquid chamber 12c and nozzle bore 12b.Nozzle bore 12b sprays cooling fluid sideling to the center of main shaft 11.The cooling fluid of ejection is run on the workpiece of tool processes.
As shown in Figure 2, main shaft 11 has the end face lid 13 with the fixing ring-type of bolt (not shown) on the outer peripheral portion of its lower surface.End face lid 13 is outstanding laterally from the periphery of main shaft 11.The ledge of end face lid 13 is relative with the interior circumferential portion of mainshaft cap 8 across the gap.The periphery of end face lid 13 is relative with the interior week of the centre bore of nozzle formation parts 12 across the gap.
As shown in Figure 3 and Figure 4, mainshaft cap 8 has outstanding annulus 8a downwards on the circumferential portion within it.Annulus 8a has rake 8b (being equivalent to the 4th rake) on the lower end of its most peripheral side.Annulus 8a has rake 8c (being equivalent to second rake) on the lower end of interior all sides of its rake 8b.Rake 8c links to each other with rake 8b by the vertical 8d of wall portion.Rake 8b and rake 8c are the inclination that its outer circumferential side is positioned at the top respectively.End face lid 13 has the 13c of wall portion of its periphery and the rake 13d (being equivalent to first rake) that links to each other with interior all sides of the 13c of this wall portion.The top of the 13c of wall portion is relative with the bottom of the 8d of wall portion of mainshaft cap 8 across less gap.The bottom of the 13c of wall portion links to each other with the 13a of eaves portion that gives prominence to laterally by rake 13b (being equivalent to the 5th rake).Rake 13d and rake 13b are the inclination that its outer circumferential side is positioned at the below respectively.
The rake 13d of end face lid 13 and formation labyrinth chamber 15 relative with the below of the rake 8c of mainshaft cap 8.Less clearance 16a between the 13c of wall portion of the outside of chamber, labyrinth 15 and end face lid 13 and the 8d of wall portion of mainshaft cap 8 links to each other.The inboard of chamber, labyrinth 15 links to each other with chamber, second labyrinth 17 across less gap 16b.Chamber, second labyrinth 17 is arranged at mainshaft cap 8 and covers on the interior circumferential portion of 13 relative parts with end face.The less gap 18 of chamber 17, second labyrinth between the outer peripheral face of the inner peripheral surface of mainshaft cap 8 and main shaft 11 links to each other with air chamber 19.Air chamber 19 is formed between the outer peripheral face of the inner peripheral surface of mainshaft cap 8 and main shaft 11.Air chamber 19 links to each other with air supply hole 20, and this air supply hole 20 runs through mainshaft cap 8 along radial direction.Air supply hole 20 links to each other with compressed-air actuated supply circuit (not shown) by the opening of the periphery of mainshaft cap 8.Compressed air via air supply hole 20, air chamber 19 and gap 18 after, enter chamber, second labyrinth 17, then via gap 16b and chamber, labyrinth 15, spray from the gap 16a between the 8d of wall portion of the 13c of wall portion of the periphery of end face lid 13 and mainshaft cap 8.
As shown in Figure 3, nozzle forms the outside that parts 12 are embedded in the annulus 8a of mainshaft cap 8.Nozzle formed parts 12 and have rake 12a (being equivalent to the 3rd rake) on the interior week of its underpart.Rake 12a is relative with the outside of the rake 8b of the most peripheral side of mainshaft cap 8.As mentioned above, rake 8b is the inclination that its outer circumferential side is positioned at the top.Rake 12a is the inclination that its outer circumferential side is positioned at the below.Rake 8b and rake 12a form the groove 14 of V font in its relative part.The periphery of the bottom of end face lid 13 is provided with the 13a of eaves portion, and the groove 14 of V font is relative with the top of the 13a of eaves portion.
Effect and effect to main shaft device 1 of the present invention describe.
Lathe comes the workpiece of Processing Room inside is processed by the instrument on the main shaft 11 that is installed on main shaft device 1.The workpiece ejection cooling fluid of the nozzle bore 12b of cooling fluid supply circuit on being arranged at nozzle formation parts 12 to processing.Cooling fluid be sprayed onto splash in behind the workpiece main shaft device 1 around.
A part that is splashed to the cooling fluid around the main shaft device 1 is met the 13a of eaves portion on the periphery that is arranged at end face lid 13 and is fallen down, thereby can not enter labyrinth part 21.A part that is splashed to main shaft device 1 cooling fluid on every side is attached to the groove 14 of V font.Be attached to of the inclination landing of the cooling fluid of groove 14, thereby can not enter labyrinth part 21 along rake 8b and rake 12a.Fall on the 13a of eaves portion along the cooling fluid that rake 8b slides.The 13a of eaves portion has rake 13b on the surface thereon.Fall in the cooling fluid on the 13a of eaves portion after rake 13b landing, get back to Processing Room inside.
The groove 14 of 13a of eaves portion and V font act as the cooling liquid measure that will enter labyrinth part 21 by a part of cutting off cooling fluid to be reduced.Other cooling fluid enters chamber, labyrinth 15 via gap 16a.The size of chamber, labyrinth 15 is big with respect to gap 16a ten minutes.The pressure of cooling fluid can descend when entering chamber 15, labyrinth.Therefore, cooling fluid is not easy to enter in the gap 16b that links to each other with the inboard of chamber, labyrinth 15.Chamber, labyrinth 15 has rake 8c at an upper portion thereof, and has rake 13d in its underpart.Rake 13d links to each other with gap 16a.The cooling fluid that enters chamber, labyrinth 15 is attached to rake 8c and rake 13d.The cooling fluid that is attached to rake 8c is fallen on the upper surface of rake 13d after interior all sides of mainshaft cap 8 are slided.Fall cooling fluid on the rake 13d upper surface and the cooling fluid that is attached to rake 13d are covered 13 outer circumferential side slip to end face after, 16a gets back to Processing Room via the gap.Cooling fluid does not accumulate in 15 inside, chamber, labyrinth, thereby is not easy to enter in the gap 16b that links to each other with the inboard of this chamber, labyrinth 15.
The following describes the alter mode of the embodiment of top explanation having been carried out partial alteration.
(1) air that is passed to labyrinth part 21 also can be an extraneous gas.In alter mode shown in Figure 4, main shaft device has coating member 30, and this coating member 30 is installed on the downside that nozzle forms parts 12.Coating member 30 has extraneous gas and introduces road 31.Extraneous gas introducing road 31 has the extraneous gas intake 31a in the open lower side of coating member 30.Extraneous gas is introduced the annulus 8a that runs through mainshaft cap 8 in road 31 and is linked to each other with chamber, labyrinth 15.In the running of lathe, force down in external pressure in the chamber, labyrinth 15.Extraneous gas enters 15 inside, chamber, labyrinth after introducing road 31 via extraneous gas.The interior pressure of chamber, labyrinth 15 become with atmospheric pressure about equally, the pressure that enters the cooling fluid of chamber, labyrinth 15 can very descend.
In alter mode, main shaft device is not being consumed under the compressed-air actuated state, can prevent effectively that cooling fluid from entering between main shaft 11 and the main shaft shell 3.Therefore, can reduce operating cost.
(2) in embodiment, main shaft device has chamber, second labyrinth 17, and this chamber, second labyrinth 17 in series links to each other with chamber, labyrinth 15.The form that the chamber, labyrinth also can in series be arranged is provided with more than three.The form that chamber, labyrinth 15 also can be arranged side by side is provided with more than two.
As can be known, the main shaft device of lathe of the present invention comprises the labyrinth part that is arranged between mainshaft cap and the end face lid from described detailed explanation.Labyrinth part prevents that cooling fluid from entering between main shaft and the main shaft shell.Labyrinth part has the chamber, labyrinth.The chamber, labyrinth has and is formed at first rake that end face covers and is formed at second rake on the mainshaft cap.Entering the chamber, labyrinth by cooling fluid descends the pressure of this cooling fluid.Thereby cooling fluid is not easy to enter between main shaft and the main shaft shell.In the labyrinth chamber interior, cooling fluid is attached to first rake and second rake.The cooling fluid that is attached to second rake is fallen on the interior circumferential portion of first rake after its tilt slide.Be attached to the cooling fluid of second rake and fall cooling fluid on the interior circumferential portion of first rake and all be tilted to outer circumferential side and slide and fall in the labyrinth outdoor along each.The chamber, labyrinth prevents that cooling fluid from entering between main shaft and the main shaft shell, and discharge accumulates in the cooling fluid of labyrinth chamber interior.
Main shaft device of the present invention can prevent effectively that cooling fluid from entering between main shaft and the main shaft shell.Get final product via the air capacity of labyrinth part is less, thereby can reduce the operating cost of lathe.
Claims (6)
1. the main shaft device of a lathe, the main shaft shell rotates supports main shaft freely, and the bottom of described main shaft protrudes in the outside of described main shaft shell, and at the bottom of described main shaft erecting tools, described main shaft device comprises:
Mainshaft cap, this mainshaft cap is fixed on the lower end of described main shaft shell, and in the form of a ring;
The end face lid, this end face covers on the outer peripheral portion of the bottom of being fixed in described main shaft, and in the form of a ring; And
Labyrinth part, this labyrinth part are arranged at described mainshaft cap and cover on part relative on the above-below direction with described end face,
Described main shaft device is characterised in that:
Described labyrinth part comprises the chamber, labyrinth, and this chamber, labyrinth has first rake and second rake, and described first rake is formed at described end face and covers, and described second rake is formed on the described mainshaft cap,
Described first rake is the inclination that its outer circumferential side is positioned at the below, and described second rake is the inclination that its outer circumferential side is positioned at the top.
2. the main shaft device of lathe as claimed in claim 1, it is characterized in that: comprise that also nozzle forms parts, this nozzle forms the bottom that parts are fixed in described mainshaft cap, and in the form of a ring, outer circumferential side in chamber, described labyrinth has the groove of V font, and the groove of this V font is formed by interior circumferential portion and the described mainshaft cap that described nozzle forms parts.
3. the main shaft device of lathe as claimed in claim 2, it is characterized in that: the groove of described V font has the 3rd rake and the 4th rake, described the 3rd rake is formed at described nozzle and forms on the parts, described the 4th rake is formed on the described mainshaft cap, described the 3rd rake is the inclination that its outer circumferential side is positioned at the below, and described the 4th rake is the inclination that its outer circumferential side is positioned at the top.
4. as the main shaft device of claim 2 or 3 described lathes, it is characterized in that: comprise eaves portion, this eaves portion be formed at described end face lid peripheral part and with the relative form configuration in below of the groove of described V font, be formed with the 5th rake on the upper surface of described eaves portion, the 5th rake is the inclination that its outer circumferential side is positioned at the below.
5. as the main shaft device of claim 2 or 3 described lathes, it is characterized in that: comprise extraneous gas introducing road, this extraneous gas is introduced the described labyrinth of road direction chamber interior and is introduced extraneous gas.
6. the main shaft device of lathe as claimed in claim 4 is characterized in that: comprise extraneous gas introducing road, this described labyrinth of extraneous gas introducing road direction chamber interior introducing extraneous gas.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008247264A JP5353157B2 (en) | 2008-09-26 | 2008-09-26 | Spindle device for machine tools |
| JP2008-247264 | 2008-09-26 | ||
| JP2008-247265 | 2008-09-26 | ||
| JP2008247265A JP5353158B2 (en) | 2008-09-26 | 2008-09-26 | Spindle device for machine tools |
| JP2008247264 | 2008-09-26 | ||
| JP2008247265 | 2008-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101683714A CN101683714A (en) | 2010-03-31 |
| CN101683714B true CN101683714B (en) | 2011-05-25 |
Family
ID=42047202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101704148A Active CN101683714B (en) | 2008-09-26 | 2009-08-19 | Spindle for machine tools |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101103215B1 (en) |
| CN (1) | CN101683714B (en) |
| TW (1) | TWI454339B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6237226B2 (en) * | 2013-12-27 | 2017-11-29 | ブラザー工業株式会社 | Numerical controller |
| TWI574774B (en) * | 2015-03-04 | 2017-03-21 | Spindle structure | |
| TWI574776B (en) * | 2015-05-20 | 2017-03-21 | Spindle structure | |
| KR101909823B1 (en) * | 2017-06-08 | 2018-10-18 | 현대위아 주식회사 | Spindle preventing from inflow of dust and machine tool having the spindle |
| JP6737846B2 (en) * | 2018-07-31 | 2020-08-12 | ファナック株式会社 | Spindle device |
| JP6787972B2 (en) * | 2018-10-31 | 2020-11-18 | ファナック株式会社 | Spindle device |
| CN110328555B (en) * | 2019-06-25 | 2021-06-18 | 杭州科博矫形康复器材有限公司 | Disc type vertical multi-spindle numerical control lathe adopting shaft speed variable principle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000052185A (en) * | 1998-08-10 | 2000-02-22 | Brother Ind Ltd | Cleaner for machine tool |
| JP3749442B2 (en) | 2001-02-16 | 2006-03-01 | オークマ株式会社 | Machine tool spindle end seal structure |
| JP2002263982A (en) * | 2001-03-14 | 2002-09-17 | Brother Ind Ltd | Seal device in main spindle device for machine tool |
| JP4358811B2 (en) * | 2005-10-06 | 2009-11-04 | オークマ株式会社 | Main shaft end seal structure of vertical machining center |
| KR100705118B1 (en) | 2005-12-07 | 2007-04-09 | 현대자동차주식회사 | Apparatus for sealing machining oil of gear box |
-
2009
- 2009-08-19 CN CN2009101704148A patent/CN101683714B/en active Active
- 2009-09-22 KR KR1020090089299A patent/KR101103215B1/en active IP Right Grant
- 2009-09-25 TW TW098132507A patent/TWI454339B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100035594A (en) | 2010-04-05 |
| TWI454339B (en) | 2014-10-01 |
| CN101683714A (en) | 2010-03-31 |
| KR101103215B1 (en) | 2012-01-05 |
| TW201021964A (en) | 2010-06-16 |
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