CN208358563U - A kind of cooling structure and its electro spindle of electro spindle - Google Patents
A kind of cooling structure and its electro spindle of electro spindle Download PDFInfo
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- CN208358563U CN208358563U CN201820664664.1U CN201820664664U CN208358563U CN 208358563 U CN208358563 U CN 208358563U CN 201820664664 U CN201820664664 U CN 201820664664U CN 208358563 U CN208358563 U CN 208358563U
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- electro spindle
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- pressing cover
- rear pressing
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Abstract
The utility model discloses a kind of cooling structures of electro spindle, comprising: rotor, and it is connected to the rear pressing cover of rotor tip, the central passage for being axially arranged with a transmission coolant liquid of rotor, rear pressing cover is equipped with a through-hole being connected to central passage；Rear pressing cover is equipped with radial hermetic seal through-hole and coolant drain through-hole, and hermetic seal through-hole and coolant drain through-hole are through the equipped gap one coolant drain channel of formation between rear pressing cover and rotor；When electro spindle works, coolant liquid is sent to grinding knife tool and workpiece through central passage, meanwhile, it blows, coolant liquid is discharged through coolant drain through-hole, to prevent coolant liquid from entering inside electro spindle to hermetic seal through-hole.It is by the way that coolant liquid to be transmitted on grinding knife tool and workpiece through the axial central passage of rotor, coolant drain channel is set in the end that rear pressing cover is connect with rotor simultaneously, coolant liquid is avoided to enter the problem inside electro spindle, it is ensured that the performance of main shaft improves spindle processing precision and service life.
Description
Technical field
The utility model relates to electro spindle technical field more particularly to a kind of coolings of the electro spindle applied to high speed grinding machine
Structure and its electro spindle.
Background technique
High-speed electric main shaft is the most key component of high-speed processing machine tool.Existing electric main shaft structure, since rotor high speed turns
Dynamic, processing part needs to be cooled down in real time by grinding coolant, and coolant liquid generally uses external device to be directly communicated to cutter
It is cooling with workpiece, or increase equally distributed nozzle in electro spindle front end face axial direction, but this structure leads to electric master
Axle construction is complicated.High-speed electric main shaft transmission optimal mode of grinding fluid in grinding is to transmit cooling by electro spindle centre bore
Liquid, leads to coolant liquid design comparison difficulty for the centre bore of high-speed electric main shaft at present, and grinding fluid occurs often and enters electro spindle
Internal situation, so that motor and bearing damage in electro spindle, the performance even main shaft for influencing electro spindle is scrapped.
Utility model content
The purpose of this utility model is to provide a kind of cooling structure of electro spindle and its electro spindles, and which solve existing
The technical issues of cooling structure complexity of electro spindle is easy to cause electro spindle to damage.
In order to achieve the above objectives, the technical solution that the utility model is proposed are as follows:
A kind of cooling structure of the electro spindle of the utility model comprising: rotor, and it is connected to the rotor tip
Rear pressing cover, the central passage for being axially arranged with a transmission coolant liquid of the rotor, the rear pressing cover are equipped with one and the center
The through-hole of channel connection；Wherein, the rear pressing cover is equipped with radial hermetic seal through-hole and coolant drain through-hole, described airtight
It seals through-hole and coolant drain through-hole and forms a coolant drain channel through the equipped gap between rear pressing cover and rotor；Electro spindle
When work, coolant liquid is inputted by the through-hole and is sent on grinding knife tool and workpiece through central passage, meanwhile, to hermetic seal through-hole
It blows, the coolant liquid penetrated into coolant drain channel is discharged through coolant drain through-hole, to prevent coolant liquid from entering electric master
Inside axis.
Wherein, an annular groove is additionally provided on the inner wall of the rear pressing cover, the hermetic seal through-hole is in rotor and rear pressure
When lid is equipped, hermetic seal through-hole is connected to the annular groove.
Wherein, a drain passage annular groove is additionally provided on the inner wall of the rear pressing cover, in rotor and equipped rear pressing cover, with
An annular groove is additionally provided on the outer wall of the rotor of the drain passage annular groove corresponding position.
Wherein, the axial cross section indention of the annular groove.
Wherein, the hermetic seal through-hole is located in different planes from coolant drain through-hole.
Wherein, the coolant drain through-hole is closer than rear pressing cover relative to hermetic seal through-hole.
Wherein, it is additionally provided with a shell outside the rotor, is fixedly connected between the shell and rear pressing cover by screw.
A kind of electro spindle comprising the cooling structure of electro spindle described in any one as above.
A kind of cooling means of electro spindle comprising following steps:
Coolant liquid is set the central passage in rotor axial by rear pressing cover input to be delivered on grinding knife tool and workpiece；
It is arranged radially hermetic seal through-hole and coolant drain through-hole in rear pressing cover, the inner wall of rear pressing cover is equipped with logical with hermetic seal
Annular groove and drain passage is respectively set on the annular groove of hole connection, and the position opposite when rotor is equipped with rear pressing cover
Annular groove blows from hermetic seal through-hole in electro spindle work, coolant liquid is discharged from coolant drain through-hole.
It wherein, further include that it is zigzag structure that annular groove, which is arranged to axial cross section,.
Compared with prior art, the cooling structure and its electro spindle of the electro spindle of the utility model, by by coolant liquid
Axial central passage through rotor is transmitted on grinding knife tool and workpiece, while being arranged in the end that rear pressing cover is connect with rotor
Coolant drain channel avoids coolant liquid from entering the problem inside electro spindle, it is ensured that the performance of main shaft improves spindle processing essence
Degree and service life.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the electro spindle of the utility model.
Fig. 2 is the explosive view of the cooling structure of the electro spindle of the utility model.
Fig. 3 is the cross-sectional view of the cooling structure of the electro spindle of the utility model.
Specific embodiment
Below with reference to attached drawing, the utility model is further described in detail.
Attached drawing 1 is please referred to attached drawing 3, in the present embodiment, the cooling structure of the electro spindle is applied to electro spindle, in attached drawing
Other necessary conventional structures of electro spindle are omitted, show only cooling structure part.The cooling structure of the electro spindle includes:
Rotor 2, and it is connected to the rear pressing cover 3 of 2 end of rotor, the center for being axially arranged with a transmission coolant liquid of the rotor 2
Channel 21, the rear pressing cover 3 are equipped with a through-hole 31 being connected to the central passage 21；Wherein, the rear pressing cover 3 is equipped with
Radial hermetic seal through-hole 32 and coolant drain through-hole 35, the hermetic seal through-hole 32 and coolant drain through-hole 35 are pressed after
Equipped gap between lid 3 and rotor 2 forms a coolant drain channel；When electro spindle works, coolant liquid is by the through-hole 31
Input is sent on grinding knife tool and workpiece through central passage 21, meanwhile, it blows to hermetic seal through-hole 32, coolant liquid row will be penetrated into
The coolant liquid put in channel is discharged through coolant drain through-hole 35, to prevent coolant liquid from entering inside electro spindle, damages electro spindle.
Referring to attached drawing 3, more specifically, an annular groove 33 is additionally provided on the inner wall of the rear pressing cover 3, it is described
When rotor 2 and rear pressing cover 3 are equipped with, hermetic seal through-hole 32 is connected to hermetic seal through-hole 32 with the annular groove 33, and the annular is recessed
Slot 33 scatters the gas being blown by hermetic seal through-hole along annular groove 33, to ensure that all there is gas in the outside of rotor 2
Blowout, to prevent from leaking.
Further, it is additionally provided with a drain passage annular groove 34 on the inner wall of the rear pressing cover 3, in rotor 2 and rear pressing cover 3
When equipped, and it is additionally provided with an annular groove 22 on the outer wall of the rotor 2 of 34 corresponding position of drain passage annular groove, namely excretion is logical
Road annular groove 34 moves towards identical with annular groove 22, further increases the draining space of coolant liquid.
Preferably, the axial cross section indention of the annular groove 22, zigzag annular groove 22 are conducive to coolant liquid list
It is exported to by coolant drain through-hole 35.Since rotor 2 and rear pressing cover 3 are in suit, the two contact surface certainly exists certain
Therefore there are annular groove 33, drain passage annular groove 34 in gap, annular groove 22 and coolant drain through-hole 35 form a perforation
Coolant drain channel.
Wherein, the hermetic seal through-hole 32 is located in different planes from coolant drain through-hole 35.Namely hermetic seal
Front and back is distributed along radial distribution and in the axial direction for through-hole 32 and coolant drain through-hole 35, and by hermetic seal through-hole 32, excretion is logical
Road annular groove 34, annular groove 22 and coolant drain through-hole 35 form a labyrinth structure, to be effectively reduced into the labyrinth
Coolant liquid it is hydraulic；The coolant liquid of spilling finally cannot be introduced into inside main shaft, is vented directly to by electro spindle drain passage 36
In external accommodating container.
More specifically, the coolant drain through-hole 35 is closer than rear pressing cover 3 relative to hermetic seal through-hole 32, such as attached drawing
Orientation shown in 3, hermetic seal through-hole 32 are located at the left side of coolant drain through-hole 35.
Referring to attached drawing 1 and attached drawing 2, a shell 1, the shell 1 and rear pressing cover 3 are additionally provided with outside the rotor 2
Between be fixedly connected by screw.A bearing 5, the locking nut for bearing 5 to be locked are additionally provided on the outer wall of rotor 2
4, and inner split ring 6 and outer spacer ring 7 positioned at the inside of bearing 5, the inner split ring 6 and outer spacer ring 7 support the inner ring of bearing 5 respectively
With the side of outer ring.
The present embodiment also discloses a kind of electro spindle comprising the cooling structure of electro spindle described in any one as above,
Other necessary structures of electro spindle are conventional structure, are not repeated herein.
The present embodiment also discloses a kind of cooling means of electro spindle comprising following steps:
Coolant liquid is set the central passage in rotor axial by rear pressing cover input to be delivered on grinding knife tool and workpiece；
The drawbacks of abandoning existing external coolant liquid equipment, or bringing by the way of nozzle complex structural designs.
It is arranged radially hermetic seal through-hole and coolant drain through-hole in rear pressing cover, the inner wall of rear pressing cover is equipped with logical with hermetic seal
Annular groove and drain passage is respectively set on the annular groove of hole connection, and the position opposite when rotor is equipped with rear pressing cover
Annular groove blows from hermetic seal through-hole in electro spindle work, coolant liquid is discharged from coolant drain through-hole.Above structure
A labyrinth structure is collectively formed, coolant liquid is effectively prevent to enter the inside of electro spindle.
It further, further include that it is zigzag structure that annular groove, which is arranged to axial cross section,.
When the electro spindle works, coolant liquid passes through 3 central through hole 31 of rear pressing cover, the central passage 21 of rotor 2 transmits cooling
Liquid is to cutter and workpiece；The coolant liquid that 2 small end face of rotor overflows is arranged by 2 small end face periphery of rotor and 3 center of rear pressing cover
The small void space of the inner headed face of 2 small end face periphery of rotor, by the high pressure gas of hermetic seal through-hole 32 formed pressure difference,
Coolant liquid is pressed directly into rear pressing cover coolant liquid excretion through-hole 35；Simultaneously by drain passage annular groove 34, rotor sawtooth pattern annular groove
22 etc. form mazy structure, are effectively reduced into the hydraulic of the coolant liquid in the labyrinth；The coolant liquid of spilling finally can not be into
Enter inside main shaft, by electro spindle drain passage, 36 are vented directly in external accommodating container.
Compared with prior art, the cooling structure and its electro spindle of the electro spindle of the present embodiment, by passing through coolant liquid
The axial central passage of rotor is transmitted on grinding knife tool and workpiece, while cold in the end that rear pressing cover is connect with rotor setting
But liquid discharge-channel avoids coolant liquid from entering the problem inside electro spindle, it is ensured that the performance of main shaft improves spindle processing precision
And the service life.
Above content, the only preferred embodiment of the utility model, are not intended to limit the embodiments of the present invention,
Those of ordinary skill in the art's central scope according to the present utility model and spirit can very easily carry out corresponding accommodation
Or modification, therefore the protection scope of the utility model should be subject to protection scope required by claims.
Claims (8)
1. a kind of cooling structure of electro spindle characterized by comprising rotor, and it is connected to the rear pressure of the rotor tip
Lid, the central passage for being axially arranged with a transmission coolant liquid of the rotor, the rear pressing cover are equipped with one and the central passage
The through-hole of connection；Wherein, the rear pressing cover is equipped with radial hermetic seal through-hole and coolant drain through-hole, and the hermetic seal is logical
Hole and coolant drain through-hole are through the equipped gap one coolant drain channel of formation between rear pressing cover and rotor；Electro spindle work
When, coolant liquid is inputted by the through-hole and is sent on grinding knife tool and workpiece through central passage, meanwhile, it is blown to hermetic seal through-hole
Gas the coolant liquid penetrated into coolant drain channel is discharged through coolant drain through-hole, to prevent coolant liquid from entering electro spindle
It is internal.
2. the cooling structure of electro spindle as described in claim 1, which is characterized in that be additionally provided on the inner wall of the rear pressing cover
One annular groove, in rotor and equipped rear pressing cover, hermetic seal through-hole is connected to the hermetic seal through-hole with the annular groove.
3. the cooling structure of electro spindle as described in claim 1, which is characterized in that be additionally provided on the inner wall of the rear pressing cover
One drain passage annular groove, in rotor and equipped rear pressing cover, on the outer wall of the rotor of the drain passage annular groove corresponding position
It is additionally provided with an annular groove.
4. the cooling structure of electro spindle as claimed in claim 3, which is characterized in that the axial cross section of the annular groove is in sawtooth
Shape.
5. the cooling structure of electro spindle as described in claim 1, which is characterized in that the hermetic seal through-hole and coolant liquid is arranged
Through-hole is put to be located in different planes.
6. the cooling structure of electro spindle as claimed in claim 5, which is characterized in that the coolant drain through-hole relative to
Hermetic seal through-hole is closer than rear pressing cover.
7. the cooling structure of electro spindle as described in claim 1, which is characterized in that it is additionally provided with a shell outside the rotor,
It is fixedly connected between the shell and rear pressing cover by screw.
8. a kind of electro spindle, which is characterized in that the cooling structure including electro spindle as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820664664.1U CN208358563U (en) | 2018-05-04 | 2018-05-04 | A kind of cooling structure and its electro spindle of electro spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820664664.1U CN208358563U (en) | 2018-05-04 | 2018-05-04 | A kind of cooling structure and its electro spindle of electro spindle |
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| Publication Number | Publication Date |
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| CN208358563U true CN208358563U (en) | 2019-01-11 |
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| CN201820664664.1U Active CN208358563U (en) | 2018-05-04 | 2018-05-04 | A kind of cooling structure and its electro spindle of electro spindle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108406588A (en) * | 2018-05-04 | 2018-08-17 | 深圳市速锋科技股份有限公司 | The cooling structure and its electro spindle and cooling means of a kind of electro spindle |
-
2018
- 2018-05-04 CN CN201820664664.1U patent/CN208358563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108406588A (en) * | 2018-05-04 | 2018-08-17 | 深圳市速锋科技股份有限公司 | The cooling structure and its electro spindle and cooling means of a kind of electro spindle |
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