CN208787553U - A kind of electro spindle - Google Patents

Abstract

The utility model discloses a kind of electro spindles, including body, stator, central spindle pull rod and knife handle；Stator, which is worn, to be connect and is fixed in body；Central spindle is used as rotor and is connected in stator；Pull rod is connected in central spindle；Central spindle bottom end offers knife handle slot, and the top of knife handle is connected in knife handle slot, and knife handle has the confined planes being located at below central spindle bottom face；The first gap is formed between the outer wall and knife handle groove groove wall of shank end；The second gap is formed between confined planes and central spindle bottom face；Pull rod offers inlet channel；Central spindle offers the first insufflation channel of connection inlet channel and the first gap, and opens up the second insufflation channel of connection the first insufflation channel and the second gap.The utility model can confined planes of outer wall and knife handle to shank end and the inner wall of central spindle and bottom face carry out drifting dust, it is ensured that cleannes of knife handle and central spindle, and then avoid the occurrence of that broaching tool is unstable, unloads knife exception or the case where central spindle knife handle damages.

Description

A kind of electro spindle

Technical field

The utility model relates to a kind of electro spindles.

Background technique

Currently, knife handle is mounted in the central spindle knife handle slot of electro spindle, is passed through later when using electro spindle process component Electro spindle drives the cutter rotation on knife handle, and realizes and process to components；During to parts machining, due to electricity There are gap between the central spindle and knife handle of main shaft, the chip and dust for processing generation can be gathered in above-mentioned gap, and lead to knife There are chips and dust in handle and central spindle；However, the drifting dust structure of existing electro spindle are as follows: the pull rod center of electro spindle opens up logical The bottom end in gas channel, the second insufflation channel is connected to knife handle inner hole；When unloading knife, it is passed through gas toward the second insufflation channel, second blows The gas in gas channel is directly blown to knife handle inner hole, only realizes the drifting dust to knife handle inner hole, still have between knife handle and central spindle chip and Dust residue, and then electro spindle is caused the case where broaching tool is unstable, unloads knife exception or central spindle, knife handle damage often occur.

Utility model content

For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of electro spindles, can be to knife handle The outer wall on top and the confined planes of knife handle and the inner wall and bottom face of central spindle carry out drifting dust, it is ensured that the cleaning of knife handle and central spindle Degree, so avoid the occurrence of broaching tool is unstable, unload knife exception or central spindle knife handle damage the case where.

The purpose of this utility model adopts the following technical scheme that realization:

A kind of electro spindle, including body, stator, central spindle pull rod and knife handle；The stator, which is worn, connects and is fixed on the body It is interior；The central spindle is used as rotor and is connected in the stator；The pull rod is connected in the central spindle；The central spindle bottom end opens up There is knife handle slot, the top of the knife handle is connected in the knife handle slot, and the knife handle has under the central spindle bottom face The confined planes of side；The first gap is formed between the outer wall of the shank end and the knife handle groove groove wall；The confined planes with The second gap is formed between the central spindle bottom face；The pull rod offers inlet channel；The central spindle offers connection institute The first insufflation channel of inlet channel and first gap is stated, and is opened up between connection first insufflation channel and described second Second insufflation channel of gap.

Further, the pull rod offers the first annular air inlet duct being connected to the inlet channel；The pull rod and Fixing sleeve is equipped with spacer between the central spindle, and the spacer offers the second annular air inlet duct；Described second annular air inlet duct point It is not connected to the first annular air inlet duct and first insufflation channel.

Further, it is provided at least two first seals between the pull rod and the spacer, at least two described One sealing element is placed in the upper and lower ends of the first annular air inlet duct.

Further, at least two second seals are provided between the spacer and the central spindle, described at least two Second seal is placed in the upper and lower ends of the described second annular air inlet duct.

Further, fixing sleeve is equipped with coolant jacket between the stator and the body, and the coolant jacket offers cooling Pipeline；The body offers the first water inlet being connected to the first cooling line, and offers and be connected to the cooling line The first water outlet.

Further, the cooling line includes the first cooling duct and of the cooling collar opposite sides of being placed in Two cooling ducts；First cooling duct extends to the bottom end of the coolant jacket along the top of the coolant jacket, and described first The bottom end of cooling duct is formed with the second water outlet；Second cooling duct extends to described cold along the top of the coolant jacket But the bottom end covered, the bottom end of second cooling duct are formed with the second water inlet, and second water inlet goes out with described second Mouth of a river connection；First water inlet is connected to the top of first cooling duct, second water outlet and described second The top of cooling duct is connected to.

Further, the extension track of first cooling duct is wave-shaped；The extension rail of second cooling duct Mark is wave-shaped.

Further, the electro spindle further includes bearing assembly, postive stop baffle and locking nut；The bearing assembly installation In in the body, and central spindle described in support；The postive stop baffle is fixed on the top of the bearing assembly；The locking nut It is fixed in the central spindle, and is located at the top of the postive stop baffle, and shape between the locking nut and the postive stop baffle At there is third space；The postive stop baffle is touched for offseting with the locking nut.

Further, the postive stop baffle may be detachably retained on the bearing assembly.

Compared with prior art, the utility model has the beneficial effects that:

The utility model opens up by forming the first gap and the second gap between knife handle and central spindle in central spindle One insufflation channel and the second insufflation channel, in this way, being passed through gas toward inlet channel when unloading knife, gas enters first through inlet channel Insufflation channel, the portion gas into insufflation channel blow to the first gap, into another part gas of insufflation channel into second Outlet passageway blows to the second gap, so blows away the impurity such as chip and the dust in the first gap and the second gap, that is, blows away knife handle The impurity such as the chip of the outer wall on top and the inner wall and bottom end of the confined planes of knife handle and central spindle and dust, it is ensured that knife handle and axis The cleannes of core, to avoid there is the case where broaching tool is unstable, unloads knife exception or the damage of central spindle knife handle.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model electro spindle；

Fig. 2 is the schematic enlarged-scale view of the utility model Fig. 1 part A；

Fig. 3 is the schematic enlarged-scale view of Local C in the utility model Fig. 2；

Fig. 4 is the structural schematic diagram of the utility model central spindle and pull rod；

Fig. 5 is the structure enlarging section of part B in the utility model Fig. 4；

Fig. 6 is the structural schematic diagram of the utility model body and coolant jacket；

Fig. 7 is the schematic perspective view of the utility model cooling jacket.

In figure: 10, body；11, the first water inlet；12, the first water outlet；20, stator；30, central spindle；31, knife handle slot； 32, the first insufflation channel；33, the second insufflation channel；40, pull rod；41, inlet channel；42, first annular air inlet duct；50, every Set；51, the second annular air inlet duct；60, first seal；70, second seal；80, coolant jacket；81, the first cooling duct； 811, the second water outlet；82, the second cooling duct；821, the second water inlet；90, bearing assembly；100, postive stop baffle；110, it locks Tight nut；120, third space；130, knife handle；131, confined planes；140, the first gap；150, the second gap.

Specific embodiment

In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new Embodiment.

A kind of electro spindle as shown in Fig. 1 and Fig. 4-5, including body 10, stator 20, central spindle 30 and pull rod 40；Above-mentioned Stator 20 is connected in body 10, and is fixed on body 10；The central spindle 30 is used as rotor and is connected in stator 20；The pull rod 40 It is connected in the central spindle 30；30 bottom end of central spindle offers knife handle slot 31, and the top of knife handle 130 is connected in knife handle slot 31, and knife Handle 130 has the confined planes 131 being located at below 30 bottom face of central spindle；When processing, by external cutter by being mounted on knife handle 130 On, in the state of energization, central spindle 30 is rotated, to be processed with cutter rotation.Connection between above-mentioned all parts Relationship and corresponding operating principle those skilled in the art can be by knowing in the prior art, and in this not go into detail.

Specifically, the first gap 140 is formed between 31 cell wall of the outer wall on 130 top of knife handle and knife handle slot；Confined planes 131 The second gap 150 is formed between 30 bottom face of central spindle；Pull rod 40 offers inlet channel 41；Central spindle 30 offer be connected into First insufflation channel 32 in gas channel 41 and the first gap 140, and open up the first insufflation channel 32 of connection and the second gap 150 Second insufflation channel 33.

In this way, when unloading knife, gas is passed through in inlet channel 41, such as the arrow in Fig. 4-5 on the basis of above structure Shown, gas enters the first insufflation channel 32 through inlet channel 41, and a part of gas into the first insufflation channel 32 blows to the 130 top outer wall of knife handle (130 bottom face of knife handle and side) and knife handle slot 31 cell wall (i.e. central spindle 30 are so blown away in one gap 140 Inner wall) chip and the impurity such as dust；Another part gas into the first insufflation channel 32 enters the second insufflation channel 33, and The second gap 150 is blowed to by the second insufflation channel 33, so blows away 30 bottom face of confined planes 131 and central spindle of knife handle 130 Chip and dust etc. impurity, and then realize the drifting dust to knife handle 130 and central spindle 30, it is ensured that the cleaning of knife handle 130 and central spindle 30 Degree can avoid the case where broaching tool is unstable, unloads knife exception or the damage of 30 knife handle 130 of central spindle occur.

Specifically, pull rod 40 is also provided with first annular air inlet duct 42, the first annular air inlet duct 42 and inlet channel 41 Connection；Fixing sleeve is equipped with spacer 50 between pull rod 40 and central spindle 30, and spacer 50 offers the second annular air inlet duct 51, second ring Shape air inlet duct 51 is connected to the first annular air inlet duct 42 and first insufflation channel 32 respectively, in this way, the gas of inlet channel 41 Body enters the second annular air inlet duct 51 through first annular air inlet duct 42, then can enter first through the second annular air inlet duct 51 and blow In channel 32；Above structure is connected to by the second annular air inlet duct 51 on spacer 50 first annular by adding spacer 50 Air inlet duct 42 and first insufflation channel 32, structure is simple and easy to implement；Herein it should be noted that above-mentioned " annular " refers to it Extending track is in head and the tail closing structure, is not limited only to round, ellipse, rectangular etc. shape.

In order to avoid gas loss, it is preferable that at least two first seals 60 are provided between pull rod 40 and spacer 50, At least two first seals 60 are placed in the upper and lower ends of first annular air inlet duct 42, in this way, first annular air inlet duct 42 Upper and lower ends are at least provided with a first seal 60；It should be noted that in actual use, the first seal 60 It is distributed as random distribution, i.e., does not have any restriction to the quantitative proportion of about 60 first seal distribution, it is only necessary to ensure first The upper and lower ends of annular air inlet duct 42 are provided with a first seal 60；In this way, can be kept away by first seal 60 Exempt from gas and be lost between spacer 50 and pull rod 40, and then ensures drifting dust effect；The first seal 60 can be existing sealing Circle, diaphragm seal, gasket etc..

Specifically, at least two second seals 70, at least two second sealings are provided between spacer 50 and central spindle 30 Part 70 is placed in the upper and lower ends of the second annular air inlet duct 51, in this way, the upper and lower ends of the second annular air inlet duct 51 are at least set It is equipped with one second annular air inlet duct 51；In use, avoiding gas between spacer 50 and central spindle 30 by second seal 70 It is lost, improves air-tightness, and then ensure drifting dust effect.Above-mentioned second seal 70 can be existing sealing ring, diaphragm seal, close Packing etc..

As shown in Fig. 1 and Fig. 6-7, since this electro spindle constantly generates heat in use, at this time to avoid this electricity Main shaft temperature is excessively high to break down, and now fills a dedicated aerofoil fan frequently in electro spindle rear end, is driven using external power supply Moving axis flow fan rotates the cooling to realize main shaft.But since aerofoil fan wind pressure is smaller, and some structure limitations of main shaft can be led But duct resistance is big for refrigeration, and air-flow unsmooth flowing, cooling effect can have a greatly reduced quality.Another method is in 30 end of main shaft central spindle A centrifugal fan is filled, directly drives centrifugal fan rotation to complete to cool down with this when main shaft central spindle 30 rotates.But due to being centrifuged wind It is identical as 30 revolving speed of central spindle to fan revolving speed, in main shaft low rotation, the cooling effect of centrifugal fan is little；And electro spindle high speed is revolved When turning, very big noise can be generated, seriously affects the hearing of machine tooling personnel.

Preferably, fixing sleeve is equipped with coolant jacket 80 between stator 20 and body 10, and coolant jacket 80 offers cooling line；Machine Body 10 offers the first water inlet 11 being connected to the first cooling line, and offers the first water outlet being connected to cooling line 12；When needing cooling, coolant is passed through in cooling line by the first water inlet 11, coolant flow is taken away after cooling line The heat of this electro spindle, and be discharged from the first water outlet 12, realize the cooling to this electro spindle；In this way, cooling by coolant Mode, good cooling results, and unrelated with the revolving speed of central spindle 30, and being cooled down in this electro spindle high speed rotation.

This electro spindle is more comprehensively cooled down to realize, it is preferable that cooling line is managed relatively including the coolant jacket 80 that is placed in The first cooling duct 81 and the second cooling duct 82 of two sides；First cooling duct 81 extends to cooling along the top of coolant jacket 80 The bottom end of set 80, the bottom end of the first cooling duct 81 is formed with the second water outlet 811；Second cooling duct 82 is along coolant jacket 80 Top extends to the bottom end of coolant jacket 80, and the bottom end of the second cooling duct 82 is formed with the second water inlet 821, the second water inlet 821 are connected to the second water outlet 811；First water inlet 11 is connected to the top of the first cooling duct 81, the second water outlet 811 with The top of second cooling duct 82 is connected to.In this way, being flowed from the coolant that the first water inlet 11 enters from the top of coolant jacket 80 To the bottom end of coolant jacket 80, and then with the heat of this electro spindle wherein side, coolant is flowed from the second water outlet 811 later Enter the second cooling duct 82 to the second water inlet 821, and the top of the coolant jacket 80 from the bottom end flowing of coolant jacket 80, band The heat of this electro spindle other side is moved, and completes the circulation of coolant, is discharged later from the first water outlet 12, cooling effect is more Comprehensively.

To make coolant flow through the more spaces of this electro spindle, it is preferable that the extension track of the first cooling duct 81 is in wave Wave-like；The extension track of second cooling duct 82 is wave-shaped.

As shown in Fig. 1 and Fig. 2-3, further, electro spindle further includes bearing assembly 90, and bearing assembly 90 is installed on body In 10, and support central spindle 30；At this point, the bearing inner race of bearing assembly 90 and central spindle 30 are interference fitted, and due to unloading knife process In, central spindle 30 is disengaged from each other with the inner ring and outer ring that pull rod 40 moves down and may cause bearing；In order to avoid above situation, Preferably, this electro spindle further includes postive stop baffle 100 and locking nut 110；Locking nut 110 is fixed in central spindle 30, and position In the top of postive stop baffle 100, and third space 120 is formed between locking nut 110 and postive stop baffle 100；Postive stop baffle 100 touch for offseting with locking nut 110；When unloading knife, central spindle 30 is moved down with pull rod 40, at this time 110 axis of locking nut Core 30 moves down, and when the movement of locking nut 110 offsets the position touched as postive stop baffle 100, that is, completes central spindle 30 Limit, avoids the bearing internal external circle of bearing assembly 90 from being detached from；And since the height H of third space 120 is smaller, unloading knife a flash Between, central spindle 30 also non-rapid decrease when just realized limit, so, be not in biggish impact noise when unloading knife；It needs herein It is noted that the height H of third space 120 can be adjusted according to the bearing designation of the bearing of different bearing assemblies 90, protect Card electro spindle bearing when unloading knife will not damage, e.g., when the model 7007 of bearing or 7008, height H be 0.05~ 0.10mm；When the model 7009 of bearing, height H is 0.05~0.15mm.

Preferably, postive stop baffle 100 may be detachably retained on bearing assembly 90, in this way, working as postive stop baffle 100 When wearing, is replaced after need to only removing postive stop baffle 100, no longer need to replace entire bearing assembly 90；Herein It is mounted on bearing assembly 90 it should be noted that the modes such as be spirally connected, snap connection can be used in above-mentioned postive stop baffle 100.

Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to In the utility model range claimed.

Claims (9)

1. a kind of electro spindle, including body, stator, central spindle pull rod and knife handle；The stator, which is worn, to be connect and is fixed in the body； The central spindle is used as rotor and is connected in the stator；The pull rod is connected in the central spindle；The central spindle bottom end offers Knife handle slot, the top of the knife handle are connected in the knife handle slot, and the knife handle has below the central spindle bottom face Confined planes；It is characterized by: being formed with the first gap between the outer wall of the shank end and the knife handle groove groove wall；It is described The second gap is formed between confined planes and the central spindle bottom face；The pull rod offers inlet channel；The central spindle opens up There is the first insufflation channel for being connected to the inlet channel and first gap, and opens up connection first insufflation channel and institute State second insufflation channel in the second gap.

2. electro spindle as described in claim 1, it is characterised in that: the pull rod offers be connected to the inlet channel One annular air inlet duct；Fixing sleeve is equipped with spacer between the pull rod and the central spindle, and the spacer offers the second annular air inlet Slot；Described second annular air inlet duct is connected to the first annular air inlet duct and first insufflation channel respectively.

3. electro spindle as claimed in claim 2, it is characterised in that: be provided at least two between the pull rod and the spacer First seal, at least two first seals are placed in the upper and lower ends of the first annular air inlet duct.

4. electro spindle as claimed in claim 2, it is characterised in that: be provided at least two between the spacer and the central spindle Second seal, at least two second seals are placed in the upper and lower ends of the described second annular air inlet duct.

5. electro spindle as described in claim 1, it is characterised in that: fixing sleeve is equipped with cooling between the stator and the body Set, the coolant jacket offer cooling line；The body offers the first water inlet being connected to the first cooling line, and opens Equipped with the first water outlet being connected to the cooling line.

6. electro spindle as claimed in claim 5, it is characterised in that: the cooling line includes the cooling collar phase that is placed in To the first cooling duct and the second cooling duct of two sides；First cooling duct extends to institute along the top of the coolant jacket The bottom end of coolant jacket is stated, the bottom end of first cooling duct is formed with the second water outlet；Second cooling duct is along described The top of coolant jacket extends to the bottom end of the coolant jacket, and the bottom end of second cooling duct is formed with the second water inlet, institute The second water inlet is stated to be connected to second water outlet；First water inlet is connected to the top of first cooling duct, Second water outlet is connected to the top of second cooling duct.

7. electro spindle as claimed in claim 6, it is characterised in that: the extension track of first cooling duct is wave-shaped； The extension track of second cooling duct is wave-shaped.

8. electro spindle as described in claim 1, it is characterised in that: the electro spindle further include bearing assembly, postive stop baffle and Locking nut；The bearing assembly is installed in the body, and central spindle described in support；The postive stop baffle is fixed on the axis The top of bearing assembly；The locking nut is fixed in the central spindle, and is located at the top of the postive stop baffle, and the locking Third space is formed between nut and the postive stop baffle；The postive stop baffle is touched for offseting with the locking nut.

9. electro spindle as claimed in claim 8, it is characterised in that: the postive stop baffle may be detachably retained at described On bearing assembly.