CN209062153U - A kind of high-speed air floatation electro spindle - Google Patents
A kind of high-speed air floatation electro spindle Download PDFInfo
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- CN209062153U CN209062153U CN201821731851.3U CN201821731851U CN209062153U CN 209062153 U CN209062153 U CN 209062153U CN 201821731851 U CN201821731851 U CN 201821731851U CN 209062153 U CN209062153 U CN 209062153U
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Abstract
The utility model discloses a kind of high-speed air floatation electro spindles, it includes steel cylinder, preceding air-bearing is equipped in steel cylinder, air-bearing afterwards, stator and central spindle, pull rod is equipped in central spindle, the rear end of steel cylinder is fixed with back-cover, the rear end of back-cover is fixed with cylinder, the side wall of cylinder, the side wall of back-cover and the side wall of steel cylinder offer the air flue being sequentially communicated, first pressure channel of preceding air-bearing and the second pressure channel of rear air-bearing are connected to air flue, the rear end of pull rod is aligned with piston rod, the rear end face of air-bearing is fixed with bracket afterwards, position sensor is fixed on bracket, the induction end of position sensor is towards the rear end of pull rod, an electric signal is exported when position sensor senses that pull rod moves backward, another electric signal is exported when position sensor senses that pull rod moves forward.The utility model can improve main shaft tool changing accuracy, guarantee main shaft stability and safety, can enhance High-speed machining precision.
Description
Technical field
The utility model relates to electro spindle more particularly to a kind of high-speed air floatation electro spindles.
Background technique
In the prior art, Precision Machining cherishes a special interest to the gas bearing in high-speed cutting, grinding application, in 3C industry
In, Speed Grinding is put forward higher requirements and it is expected.Currently, ball class electro spindle revolving speed is unable to process requirements, and
The knife handle that existing high-speed main spindle uses is chiefly used in ISO, BT interface, is unfavorable for High-speed machining.Especially when main shaft is run, revolving speed
Stability and accuracy determine the quality of converted products, the accuracy of revolving speed is unable to satisfy, in addition, can not recognize when main shaft
Whether front-end of spindle has whether dress knife handle or knife handle have assembly in place, and current air-floating main shaft in the market is to have no idea to know
Not, can arrive in this way causes main shaft to collide, or leads to board run-time error, and cutter tool magazine is damaged, is seriously affected
The safety of main shaft and the service life of main shaft.
Utility model content
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, providing a kind of can improve main shaft
Tool changing accuracy guarantees main shaft stability and safety, the high-speed air floatation electro spindle that can enhance High-speed machining precision.
In order to solve the above technical problems, the utility model adopts the following technical solution.
A kind of high-speed air floatation electro spindle comprising have a steel cylinder, be equipped in the steel cylinder preceding air-bearing, rear air-bearing,
Stator and central spindle, the preceding air-bearing are fixed on the front end of the steel cylinder, and the rear air-bearing is fixed on the steel cylinder
Rear end, the stator are set between the preceding air-bearing and rear air-bearing, and the central spindle sequentially passes through the preceding air-bearing shafts
It holds, stator and rear air-bearing, the central spindle are equipped with pull rod, the front opening of the central spindle in hollow form in the central spindle
Place is inserted with knife handle, and the front end of the pull rod is connected to the knife handle, and the rear end of the steel cylinder is fixed with back-cover, the back-cover
Rear end is fixed with cylinder, and the side wall of the side wall of the cylinder, the side wall of back-cover and steel cylinder offers the air flue being sequentially communicated, described
First pressure channel of preceding air-bearing and the second pressure channel of rear air-bearing are connected to the air flue, the cylinder
Piston rod extends in the back-cover, and the rear end of the pull rod extends in the back-cover, and the rear end of the pull rod with it is described
The rear end face of piston rod alignment, the rear air-bearing is fixed with bracket, and position sensor, institute's rheme are fixed on the bracket
The induction end of sensor is set towards the rear end of the pull rod, it is defeated when the position sensor senses that the pull rod moves backward
An electric signal out exports another electric signal when the position sensor senses that the pull rod moves forward.
Preferably, the slot of a preset length is offered on the bracket, the position sensor passes through the slot, and
The position sensor is fixed on the bracket by nut, and by the cooperation of the slot and nut, the position is passed
Sensor is fixed on predeterminated position.
Preferably, the rear end face of the rear air-bearing is equipped with the first air inlet and first row stomata, the rear air-bearing shafts
The inner sidewall held offers multiple rows of first segment discharge orifice, by second pressure channel by first air inlet, first throttle
Hole is connected with first row stomata.
Preferably, multiple rows of first segment discharge orifice is sequentially distributed along the circumferential direction of the rear air-bearing,
Preferably, the front end face of the preceding air-bearing is equipped with the second air inlet and second row stomata, the preceding air-bearing shafts
The inner sidewall and front end face held offers the second throttle orifice, by first pressure channel by second air inlet,
Two throttle orifices are connected with second row stomata.
Preferably, the steel cylinder is fixedly arranged at the front end with thrust air-bearing, and the front end of the central spindle is formed with flying disc, described
Flying disc is set between the thrust air-bearing and the preceding air-bearing.
Preferably, the rear end face of the thrust air-bearing offers third air inlet and third gas vent, the third
Air inlet is connected to the air flue, and third pressure channel is offered in the thrust air-bearing, the thrust air-bearing
Rear end face offers third throttle orifice, and the third throttle orifice is towards the flying disc, and by the third pressure channel by institute
State third air inlet, third throttle orifice is connected with third gas vent.
Preferably, the central spindle includes front, middle part and rear portion, the diameter of the front, middle part and rear portion according to
Secondary reduction is arranged with squirrel-cage winding to enable the outer surface of the central spindle stepped on the middle part, the squirrel-cage around
Group is aligned with the stator.
Preferably, disk spring component is arranged on the pull rod, the both ends of the disk spring component are connected to respectively
Between the rear end of the pull rod and the inner wall of the central spindle, the pull rod is driven by the elastic force that the disk spring component applies
It moves backward.
Preferably, encoder gear and armature nut are equipped in the back-cover, the rear end of the central spindle sequentially passes through the volume
Code gear and armature nut, the armature nut are screwed together in the rear end of the central spindle, by the armature nut by the coding
Gear is fixed in the central spindle, and the outer surface of the encoder gear is toothed around, and the rear end face of the rear air-bearing is fixed
There is encoder, the induction end of the encoder is aligned with the gear teeth of the encoder gear.
In high-speed air floatation electro spindle disclosed by the utility model, preceding air-bearing and rear air-bearing shafts are provided in steel cylinder
Hold, and used as the bearing that can carry central spindle, between the central spindle and two air-bearings, using compressed air central spindle with
Air film is formed between bearing, is not only reduced and is rubbed so that central spindle is in suspension by air film support central spindle high speed rotation in bearing
It wipes, and substantially increases the speed of mainshaft, and then improve product processing quality and processing efficiency, in addition, in rear air-bearing
Rear end is provided with position sensor, the feelings in place pushed and pulled before and after pull rod described in the electrical signal detection exported by position sensor
Condition effectively increases safety and the Main Shaft Service Life of main shaft, preferably to implement the state of monitoring front-end of spindle knife handle
Meet application demand.
Detailed description of the invention
Fig. 1 is the cross-sectional view one of the utility model air-flotation electric spindle；
Fig. 2 is the cross-sectional view two of the utility model air-flotation electric spindle；
Fig. 3 is the perspective view of rear air-bearing；
Fig. 4 is the cross-sectional view one of rear air-bearing；
Fig. 5 is the cross-sectional view two of rear air-bearing；
Fig. 6 is the structure chart of bracket and position sensor；
Fig. 7 is the structure chart of bracket；
Fig. 8 is the perspective view of preceding air-bearing；
Fig. 9 is the cross-sectional view of preceding air-bearing；
Figure 10 is the perspective view of thrust bearing；
Figure 11 is the cross-sectional view of thrust bearing；
Figure 12 is the cross-sectional view of central spindle.
Specific embodiment
The utility model is described in more detail with reference to the accompanying drawings and examples.
The utility model discloses a kind of high-speed air floatation electro spindles, in conjunction with shown in Fig. 1 to Figure 12 comprising have steel cylinder 1, institute
It states and is equipped with preceding air-bearing 2, rear air-bearing 3, stator 4 and central spindle 5 in steel cylinder 1, the preceding air-bearing 2 is fixed on the steel
The front end of cylinder 1, the rear air-bearing 3 are fixed on the rear end of the steel cylinder 1, and the stator 4 is set to preceding 2 He of air-bearing
Afterwards between air-bearing 3, the central spindle 5 sequentially passes through the preceding air-bearing 2, stator 4 and rear air-bearing 3, the central spindle 5
In hollow form, and it is equipped with pull rod 6 in the central spindle 5, is inserted with knife handle 7 at the front opening of the central spindle 5, the pull rod 6
Front end is connected to the knife handle 7, and the rear end of the steel cylinder 1 is fixed with back-cover 8, and the rear end of the back-cover 8 is fixed with cylinder 9, institute
The side wall for stating the side wall of cylinder 9, the side wall of back-cover 8 and steel cylinder 1 offers the air flue 10 being sequentially communicated, the preceding air-bearing 2
The first pressure channel 25 and the second pressure channel 35 of rear air-bearing 3 be connected to the air flue 10, the work of the cylinder 9
Stopper rod 90 extends in the back-cover 8, and the rear end of the pull rod 6 extends in the back-cover 8, and the rear end of the pull rod 6 with
The piston rod 90 is aligned, and the rear end face of the rear air-bearing 3 is fixed with bracket 30, and position biography is fixed on the bracket 30
Sensor 31, the induction end of the position sensor 31 is towards the rear end of the pull rod 6, when the position sensor 31 senses institute
It states when pull rod 6 moves backward and exports an electric signal, the output when the position sensor 31 senses that the pull rod 6 moves forward
Another electric signal.
In above-mentioned high-speed air floatation electro spindle, preceding air-bearing 2 and rear air-bearing 3 are provided in steel cylinder 1, and as can
Carry central spindle 2 bearing use, between the central spindle 2 and two air-bearings, using compressed air between central spindle 2 and bearing shape
At air film, friction is not only reduced so that central spindle is in suspension by the air film support high speed rotation in bearing of central spindle 2, and
The speed of mainshaft is substantially increased, and then improves product processing quality and processing efficiency, in addition, being set in the rear end of rear air-bearing 3
Position sensor 31 has been set, the situation in place pushed and pulled before and after pull rod 6 described in the electrical signal detection exported by position sensor 31,
To implement to monitor the state of front-end of spindle knife handle, safety and the Main Shaft Service Life of main shaft are effectively increased, it is preferably full
Foot application demand.
Wherein, the electric signal that the position sensor 31 is exported under different sense states can be low level or high electricity
It is flat.
In the present embodiment, Fig. 6 and Fig. 7 are please referred to, the slot 32 of a preset length, institute's rheme are offered on the bracket 30
Sensor 31 is set across the slot 32, and the position sensor 31 is fixed on the bracket 30 by nut 33, by
The cooperation of the slot 32 and nut 33, is fixed on predeterminated position for the position sensor 31.In the effect of the slot 32
Under, the installation site of position sensor 31 can be adjusted as needed, to improve detection accuracy and accuracy in place.
About the specific structure of rear air-bearing 3, referring to figure 3. to Fig. 5, in the present embodiment, it is described after air-bearing 3
Rear end face is equipped with the first air inlet 300 and first row stomata 301, and the inner sidewall of the rear air-bearing 3 offers multiple rows of first
Throttle orifice 302, by second pressure channel 35 by first air inlet 300, first segment discharge orifice 302 and first row stomata
301 are connected.Further, multiple rows of first segment discharge orifice 302 is sequentially distributed along the circumferential direction of the rear air-bearing 3,
About preceding air-bearing 2, Fig. 8 and Fig. 9 are please referred to, in the present embodiment, the front end face of the preceding air-bearing 2 is equipped with
Second air inlet 200 and second row stomata 201, the inner sidewall and front end face of the preceding air-bearing 2 offer the second throttling
Hole 202, by first pressure channel 25 by second air inlet 200, the second throttle orifice 202 and second row stomata 201
It is connected.
It is please referred to shown in Fig. 1, Figure 10 and Figure 11 as a preferred method, the steel cylinder 1 is fixedly arranged at the front end with thrust gas
Floating axle holds 11, and the front end of the central spindle 5 is formed with flying disc 50, the flying disc 50 be set to the thrust air-bearing 11 with it is described before
Between air-bearing 2.Wherein, flying disc 50 is located at front-end of spindle, is conducive to more stable when main shaft high-speed cruising and product and processes matter
Amount.
Further, the rear end face of the thrust air-bearing 11 offers third air inlet 110 and third gas vent
111, the third air inlet 110 is connected to the air flue 10, offers third pressure channel in the thrust air-bearing 11
112, the rear end face of the thrust air-bearing 11 offers third throttle orifice 113, and the third throttle orifice 113 flies towards described
Disk 50, and by the third pressure channel 112 by the third air inlet 110, third throttle orifice 113 and third gas vent
111 are connected.
In the present embodiment, Fig. 1 and Figure 12 are please referred to, the central spindle 5 includes front 51, middle part 52 and rear portion 53, institute
The diameter for stating front 51, middle part 52 and rear portion 53 is sequentially reduced, to enable the outer surface of the central spindle 5 stepped, it is described in
Between be arranged with squirrel-cage winding 54 in portion 52, the squirrel-cage winding 54 is aligned with the stator 4.
In order to realize that pull rod 6 automatically resets, in the present embodiment, disk spring component 60 is arranged on the pull rod 6, it is described
The both ends of disk spring component 60 are connected to respectively between the rear end of the pull rod 6 and the inner wall of the central spindle 5, by the dish
The elastic force that shape spring assembly 60 applies drives the pull rod 6 to move backward.
The present embodiment preferably use speed detector, in particular to, encoder gear 55 and rotor are equipped in the back-cover 8
Nut 56, the rear end of the central spindle 5 sequentially pass through the encoder gear 55 and armature nut 56, and the armature nut 56 is screwed together in
The encoder gear 55 is fixed in the central spindle 5, the coding by the rear end of the central spindle 5 by the armature nut 56
The outer surface of gear 55 is toothed around encoder (not indicating), and the rear end face of the rear air-bearing 3 is fixed with encoder and (does not mark
Show), the induction end of the encoder is aligned with the gear teeth of the encoder gear 55.Wherein, the encoder and the coding tooth
The gear teeth composition device for testing rotating speed of wheel 55 helps to improve the control precision of main shaft to effectively monitor the speed of mainshaft.
The above is the utility model preferred embodiment, is not intended to limit the utility model, all practical at this
Modification, equivalent replacement or the improvement etc. made in novel technical scope, should be included in the model that the utility model is protected
In enclosing.
Claims (10)
1. a kind of high-speed air floatation electro spindle, which is characterized in that include steel cylinder (1), preceding air-bearing is equipped in the steel cylinder (1)
(2), rear air-bearing (3), stator (4) and central spindle (5), the preceding air-bearing (2) are fixed on the front end of the steel cylinder (1),
Air-bearing (3) is fixed on the rear end of the steel cylinder (1) after described, the stator (4) be set to the preceding air-bearing (2) and after
Between air-bearing (3), the central spindle (5) sequentially passes through the preceding air-bearing (2), stator (4) and rear air-bearing (3),
The central spindle (5) is in hollow form, and is equipped with pull rod (6) in the central spindle (5), is inserted at the front opening of the central spindle (5)
The front end of knife handle (7), the pull rod (6) is connected to the knife handle (7), and the rear end of the steel cylinder (1) is fixed with back-cover (8), institute
The rear end for stating back-cover (8) is fixed with cylinder (9), and the side wall of the side wall of the cylinder (9), the side wall of back-cover (8) and steel cylinder (1) is opened
Equipped with the air flue (10) being sequentially communicated, the of the first pressure channel (25) of the preceding air-bearing (2) and rear air-bearing (3)
Two pressure channels (35) are connected to the air flue (10), and the piston rod (90) of the cylinder (9) extends to the back-cover (8)
Interior, the rear end of the pull rod (6) extends in the back-cover (8), and the rear end of the pull rod (6) and the piston rod (90) are right
Together, the rear end face of the rear air-bearing (3) is fixed with bracket (30), fixes position sensor on the bracket (30)
(31), the induction end of the position sensor (31) towards the pull rod (6) rear end, when the position sensor (31) incude
An electric signal is exported when moving backward to the pull rod (6), when the position sensor (31) senses the pull rod (6) forward
Another electric signal is exported when mobile.
2. high-speed air floatation electro spindle as described in claim 1, which is characterized in that offer a default length on the bracket (30)
The slot (32) of degree, the position sensor (31) passes through the slot (32), and the position sensor (31) passes through nut
(33) it is fixed on the bracket (30), by the cooperation of the slot (32) and nut (33), by the position sensor
(31) it is fixed on predeterminated position.
3. high-speed air floatation electro spindle as described in claim 1, which is characterized in that the rear end face of air-bearing (3) is set after described
There are the first air inlet (300) and first row stomata (301), the inner sidewall of the rear air-bearing (3) offers multiple rows of first segment
Discharge orifice (302), by second pressure channel (35) by first air inlet (300), first segment discharge orifice (302) and first
Gas vent (301) is connected.
4. high-speed air floatation electro spindle as claimed in claim 3, which is characterized in that multiple rows of first segment discharge orifice (302) is after described
The circumferential direction of air-bearing (3) is sequentially distributed.
5. high-speed air floatation electro spindle as described in claim 1, which is characterized in that the front end face of the preceding air-bearing (2) is set
There are the second air inlet (200) and second row stomata (201), the inner sidewall and front end face of the preceding air-bearing (2) offer
Second throttle orifice (202), by first pressure channel (25) by second air inlet (200), the second throttle orifice (202)
It is connected with second row stomata (201).
6. high-speed air floatation electro spindle as claimed in claim 5, which is characterized in that the steel cylinder (1) is fixedly arranged at the front end with thrust
The front end of air-bearing (11), the central spindle (5) is formed with flying disc (50), and the flying disc (50) is set to the thrust air-bearing
(11) between the preceding air-bearing (2).
7. high-speed air floatation electro spindle as claimed in claim 6, which is characterized in that the rear end face of the thrust air-bearing (11)
Third air inlet (110) and third gas vent (111) are offered, the third air inlet (110) is connected to the air flue (10),
It is offered third pressure channel (112) in the thrust air-bearing (11), the rear end face of the thrust air-bearing (11) is opened
Equipped with third throttle orifice (113), the third throttle orifice (113) is led to towards the flying disc (50), and by the third air pressure
The third air inlet (110), third throttle orifice (113) are connected by road (112) with third gas vent (111).
8. high-speed air floatation electro spindle as described in claim 1, which is characterized in that the central spindle (5) include front (51), in
Between portion (52) and rear portion (53), the diameter of the front (51), middle part (52) and rear portion (53) is sequentially reduced, to enable the axis
The outer surface of core (5) is stepped, is arranged with squirrel-cage winding (54) on the middle part (52), the squirrel-cage winding (54)
It is aligned with the stator (4).
9. high-speed air floatation electro spindle as described in claim 1, which is characterized in that be arranged with disk spring on the pull rod (6)
Component (60), the both ends of the disk spring component (60) are connected to the rear end and the central spindle (5) of the pull rod (6) respectively
Between inner wall, the pull rod (6) is driven to move backward by the elastic force that the disk spring component (60) applies.
10. high-speed air floatation electro spindle as described in claim 1, which is characterized in that be equipped with encoder gear in the back-cover (8)
(55) and armature nut (56), the rear end of the central spindle (5) sequentially pass through the encoder gear (55) and armature nut (56), institute
The rear end that armature nut (56) is screwed together in the central spindle (5) is stated, by the armature nut (56) by the encoder gear (55)
It is fixed on the central spindle (5), the outer surface of the encoder gear (55) is toothed around, the rear end of the rear air-bearing (3)
Face is fixed with encoder, and the induction end of the encoder is aligned with the gear teeth of the encoder gear (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821731851.3U CN209062153U (en) | 2018-10-24 | 2018-10-24 | A kind of high-speed air floatation electro spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821731851.3U CN209062153U (en) | 2018-10-24 | 2018-10-24 | A kind of high-speed air floatation electro spindle |
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| Publication Number | Publication Date |
|---|---|
| CN209062153U true CN209062153U (en) | 2019-07-05 |
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ID=67095948
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821731851.3U Active CN209062153U (en) | 2018-10-24 | 2018-10-24 | A kind of high-speed air floatation electro spindle |
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| Country | Link |
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| CN (1) | CN209062153U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261991A (en) * | 2018-10-24 | 2019-01-25 | 深圳市爱贝科精密机械有限公司 | A kind of high-speed air floatation electro spindle |
| CN110605407A (en) * | 2019-08-01 | 2019-12-24 | 杭州电子科技大学 | Micro-disturbance-based air floatation main shaft axial dynamic stiffness self-adaption device and method |
| CN110860705A (en) * | 2018-08-28 | 2020-03-06 | 薛富盛 | Non-contact type electric energy transmission high-frequency vibration main shaft system and restraint piece manufacturing method |
| CN113524472A (en) * | 2021-07-28 | 2021-10-22 | 无锡阳光精机有限公司 | Bearing protection structure for photovoltaic section |
-
2018
- 2018-10-24 CN CN201821731851.3U patent/CN209062153U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110860705A (en) * | 2018-08-28 | 2020-03-06 | 薛富盛 | Non-contact type electric energy transmission high-frequency vibration main shaft system and restraint piece manufacturing method |
| US11654493B2 (en) | 2018-08-28 | 2023-05-23 | National Chung Hsing University | High frequency vibration spindle system with noncontact power transmission and method for manufacturing a restraining part used therein |
| CN109261991A (en) * | 2018-10-24 | 2019-01-25 | 深圳市爱贝科精密机械有限公司 | A kind of high-speed air floatation electro spindle |
| CN110605407A (en) * | 2019-08-01 | 2019-12-24 | 杭州电子科技大学 | Micro-disturbance-based air floatation main shaft axial dynamic stiffness self-adaption device and method |
| CN110605407B (en) * | 2019-08-01 | 2024-04-05 | 杭州电子科技大学 | Air floatation spindle axial dynamic stiffness self-adaptive device and method based on micro-disturbance |
| CN113524472A (en) * | 2021-07-28 | 2021-10-22 | 无锡阳光精机有限公司 | Bearing protection structure for photovoltaic section |
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Address after: 518111 1st and 2nd floors, building A6, silicon valley power intelligent terminal Industrial Park, No.20, Dafu Industrial Zone, Aobei community, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen aibeike Precision Industry Co.,Ltd. Address before: 518111 2nd floor, building A6, silicon valley power intelligent terminal Industrial Park, 20 Dafu Industrial Zone, Aobei community, Guanlan street, Longhua New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ABIG PRECISION MACHINERY Co.,Ltd. |
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