CN207128015U - It is a kind of from fanning wind cooling automatic tool changing electrical spindle - Google Patents

Abstract

The utility model discloses one kind from fanning wind cooling automatic tool changing electrical spindle, including body fuselage, cooling component, mandrel component, for clamping process tool and carrying out the knife-changing system of process operation and the Pneumatic assembly for driving knife-changing system to clamp cutter；Formed with the host cavity for accommodating cooling component and mandrel component in body fuselage；Cooling component is arranged on the top of host cavity and is communicated in the outside and inside of host cavity, so that air inlet is formed on the top of host cavity；Knife-changing system is arranged on the bottom of body fuselage；Pneumatic assembly is arranged on the bottom of cooling component；Mandrel component is located between knife-changing system and Pneumatic assembly；Formed with air channel between Pneumatic assembly and host cavity；Air channel one end connects with cooling component, and the other end extends towards mandrel component direction；Cooling component is coaxially connected with mandrel component, and mandrel component and cooling component are directly fixed in one by the utility model, enormously simplify the structure from fanning wind cooling automatic tool changing electrical spindle.

Description

It is a kind of from fanning wind cooling automatic tool changing electrical spindle

Technical field

A kind of electro spindle is the utility model is related to, more particularly to it is a kind of from fanning wind cooling automatic tool changing electrical spindle.

Background technology

At present, high-speed automatic tool changing electrical spindle is widely used in timber numerical controlled engraving and milling device, machining center etc., has processing work( Rate is high, safeguards the features such as simple.Traditional electro spindle is generally cooled down using water-cooling pattern to main shaft, but the mode of water cooling needs Increase the auxiliary devices such as water cooling unit, water pump, complicated, cost is higher.Therefore, with reference to the free of contamination ring of timber dry processing Border requires that woodworker power principle axis generality is cooled down from air cooling way to main shaft, and main shaft cooling is carried out using air cooling way Woodworker power principle axis is generally required in the external special aerofoil fan of rear-end of spindle, utilizes external power supply driving aerofoil fan rotation Change the line of production angry stream, air channel of the air-flow between cylinder, top chock and shell, finally to stator outside casing cool down.

But there is following defect in existing woodworker power principle axis：

The overall volume of woodworker power principle axis is not only increased using external aerofoil fan, it is also necessary to which aerofoil fan is carried out Extra wiring and assembling, because aerofoil fan blast is small, plus the limitation of this body structure of woodworker power principle axis, main shaft is caused to dissipate Thermal effect is bad.In addition, aerofoil fan volume is big, complicated, cost is high, current woodworker power principle axis cost is caused to occupy height not Under, and have impact on the structural compactness of woodworker power principle axis.

Utility model content

For overcome the deficiencies in the prior art, the purpose of this utility model is to provide one kind from fanning wind cooling automatic tool changing electrical Main shaft, the structural compactness from fanning wind cooling automatic tool changing electrical spindle is improved, make its better heat-radiation effect.

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

It is a kind of from fanning wind cooling automatic tool changing electrical spindle, including body fuselage, cooling component, mandrel component, for clamping plus Work cutter and carry out process operation knife-changing system and pneumatic group for driving that the knife-changing system clamped to cutter Part；Formed with the host cavity for accommodating the cooling component and the mandrel component in the body fuselage；The cooling Component is arranged on the top of the host cavity and connects the outside and inside of the host cavity, so that the top shape of the host cavity Into air inlet；The knife-changing system is arranged on the bottom of the body fuselage；The Pneumatic assembly is arranged on the cooling component Bottom；The mandrel component is located between the knife-changing system and the Pneumatic assembly；The Pneumatic assembly and the collecting Formed with air channel between chamber；Described air channel one end connects with the cooling component, and the other end extends towards the mandrel component direction； The cooling component and the mandrel component are coaxially connected.

Further, the cooling component includes rear cover of fan component and impeller assembly；The rear cover of fan component lid Located at the top of the body fuselage；The impeller assembly is arranged between the rear cover of fan component and the Pneumatic assembly； The top of the impeller assembly is by the rear cover of fan component and the body fuselage ft connection and forms the air inlet； The side of the impeller assembly is provided with air outlet；Air-inducing passage of the bottom formed with arc of the rear cover of fan component；It is described Air-inducing passage is respectively communicated with the air outlet and air channel.

Further, the Pneumatic assembly includes cylinder body, first piston and second piston；The top of the cylinder body is formed There is the first inlet plenum, the bottom of the cylinder body is formed with the second inlet plenum；The upper cap of the cylinder body is provided with and the impeller sets The cylinder top cover that part is tightly connected；The second piston activity is connected to the cylinder body and through first inlet plenum and institute State the second inlet plenum；One end that the second piston is located at second inlet plenum is provided with for pushing supporting for the knife-changing system Pushed section；The roof of the pushing portion and second inlet plenum leans；The roof of the pushing portion and second inlet plenum Between formed with the second air inlet connected with outside air pump；The first piston is located at first inlet plenum and fixation is arranged In the second piston；It is provided with and is used for the first piston between the lower surface of the first piston and first inlet plenum Pushing tow is in the back-moving spring of the cylinder cap base；The first piston leans with the cylinder top cover；Described first lives Plug between the cylinder top cover formed with the first air inlet connected with outside air pump.

Further, it is provided between the lower surface of the first piston and first inlet plenum and is used to stablize described first The pin of piston stroke；Described pin one end and the first piston are affixed, following table of the other end towards first inlet plenum Face；The cylinder body be provided be used for the pin socket coordinate guide groove so that the pin be located at it is past in the guide groove Polyslip.

Further, the mandrel component includes rotating shaft and the motor for driving the rotating shaft；The motor includes The rotor being arranged in the rotating shaft and the stator with the rotor engagement；The interference of the stator and the host cavity is matched somebody with somebody Close；The rotating shaft runs through the rotor, and the rotating shaft is provided with upper bearing (metal) close to one end of the Pneumatic assembly, and by described Bearing hinge joint is in the host cavity, and positioned at the lower section of the second piston, other end activity is connected to the knife-changing system.

Further, the diameter of bore of the stator is more than the outside diameter of the upper bearing (metal).

Further, the knife-changing system includes rod assembly and lower bearing sleeve；The lower bearing sleeve is arranged on described The bottom of body fuselage, the inner chamber both ends of the lower bearing sleeve are respectively equipped with lower bearing and middle (center) bearing；The rotating shaft is articulated in The lower bearing and the middle (center) bearing；The rod assembly is actively located in the rotating shaft, and is coaxially disposed with the rotating shaft； The rod assembly is provided with the straight pin for being used for compressing for the pushing portion close to one end of the second piston；The rotating shaft position Annular groove has been internally formed in one end of the knife-changing system；One end activity Tibetan that the rod assembly is located at the knife-changing system is set There are at least two steel balls being oppositely arranged；The annular groove is located at the lower section of the steel ball, so that the rod assembly is pushed by described During portion pushes, the steel ball can be fallen into the annular groove.

Further, activity is equipped with for connecting the impeller assembly and straight pin respectively in the second piston Shaft core；The pivot of the impeller assembly, the shaft core, the straight pin and the rod assembly are coaxially disposed, with The rotating shaft is driven the rod assembly, drive the impeller assembly synchronously to turn by the straight pin and the shaft core It is dynamic.

Further, it is interior formed with the connection straight pin formed with the first breather pipe, the straight pin in the shaft core Second breather pipe at both ends, the rod assembly are interior formed with the 3rd breather pipe for connecting the rod assembly both ends；Described One breather pipe, second breather pipe, the 3rd breather pipe are sequentially communicated, and the 3rd breather pipe is away from the Pneumatic assembly One end formed with gas outlet；The cylinder body side is provided with for connecing the first air flue that gas head is connected with outside；The shaft core is opened Have for the 3rd air flue for first air flue exhaust；The side wall of the second piston is provided with the second air flue；Second gas Road is used for when the second piston pushes, and turns on first air flue and the 3rd air flue, so that first air flue Gas is discharged from the gas outlet.

Further, disc spring, gland and elastic spring are arranged between the rod assembly and the rotating shaft；The drawing Bar assembly surface is provided with deep-slotted chip breaker, and the elastic spring is connected in the deep-slotted chip breaker；The gland is enclosed located at the elastic spring, It is affixed with the elastic spring and for the disc spring provide pretightning force.

Compared with prior art, the beneficial effects of the utility model are：

For aerofoil fan blast is small, volume is big, complex structure and other problems, the utility model is by mandrel component and cooling group Part is coaxially connected, and mandrel component and cooling component directly are fixed in into one, enormously simplify from fanning wind cooling automatic tool changing electrical master The structure of axle, external power supply and wire is avoided to be attached again with cooling component.By from fanning wind cooling automatic tool changing electrical spindle Top is set to air inlet, and it is simpler using air-cooled electro spindle main shaft side to be set into air inlet structure relative to transmission, makes It is overall compacter to obtain main shaft, the high velocity air that cooling component is formed can be cooled down directly to body fuselage, by mandrel component The heat for passing to body fuselage is discharged through air channel, accelerates the integral heat sink effect of electro spindle.

Brief description of the drawings

Fig. 1 is the utility model from fanning wind cooling automatic tool changing electrical spindle sectional view；

Fig. 2 is the utility model cooling element structure view；

Fig. 3 is the utility model impeller assembly topology view；

Fig. 4 is the utility model flabellum top view；

Fig. 5 is the utility model Pneumatic assembly topology view；

Fig. 6 is the utility model mandrel component topology view；

Fig. 7 is Fig. 1 A portions zoomed-in view；

Fig. 8 is Fig. 1 B portions zoomed-in view.

In figure：10th, body fuselage；20th, cooling component；30th, mandrel component；40th, knife-changing system；50th, Pneumatic assembly；21、 Air inlet；22nd, rear cover of fan component；221st, screen pack；23rd, impeller assembly；231st, air outlet；11st, host cavity；12nd, air channel； 13rd, terminal box；51st, cylinder body；52nd, first piston；53rd, second piston；222nd, air-inducing passage；232nd, impeller front disc；233rd, impeller Hub disk；2331st, flabellum；2332nd, screw hole；2333rd, screw counter bore；511st, the first inlet plenum；512nd, the second inlet plenum；513rd, One air flue；514th, back-moving spring；54th, cylinder top cover；531st, pushing portion；5121st, the second air inlet；5111st, the first air inlet； 521st, pin；31st, rotating shaft；32nd, rotor；41st, rod assembly；42nd, lower bearing sleeve；311st, upper bearing (metal)；33rd, stator；421st, lower axle Hold；422nd, middle (center) bearing；411st, straight pin；312nd, annular groove；412nd, pulling claw；413rd, steel ball；24th, shaft core；43rd, disc spring；44th, gland； 45th, elastic spring；242nd, the 3rd air flue；241st, the first breather pipe；532nd, the second air flue；4111st, the second breather pipe；414th, the 3rd Breather pipe；4131st, gas outlet.

Embodiment

Below, with reference to accompanying drawing and embodiment, the utility model is described further, it is necessary to explanation is, On the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new Embodiment.

As Figure 1-4, in order that woodworker power principle axis radiating effect is more preferable in use, while allow woodworker power principle axis Overall structure is compacter, and the utility model provides one kind from fanning wind cooling automatic tool changing electrical spindle, should be from fanning wind cooling automatic tool changer Electro spindle include body fuselage 10, cooling component 20, mandrel component 30, for clamping process tool and carrying out changing for process operation Knife system 40 and the Pneumatic assembly 50 for driving knife-changing system 40 to clamp cutter；In body fuselage 10 formed with In the host cavity 11 for accommodating cooling component 20 and mandrel component 30, it is preferred that mandrel component 30 is matched somebody with somebody with host cavity 11 for interference Close；Cooling component 20 is arranged on the top of host cavity 11 and connects the outside and inside of host cavity 11, so that the top of host cavity 11 Portion forms air inlet 21, and cooling component 20 is preferably centrifugal blower；Knife-changing system 40 is arranged on the bottom of body fuselage 10；Pneumatically Component 50 is arranged on the bottom of cooling component 20；Mandrel component 30 is located between knife-changing system 40 and Pneumatic assembly 50；Pneumatic group Formed with air channel 12 between part 50 and host cavity 11；The one end of air channel 12 connects with cooling component 20, and the other end is towards mandrel component 30 Direction extends；Cooling component 20 and mandrel component 30 are coaxially connected.In the utility model running, the sidepiece of body fuselage 10 The terminal box 13 for being connected with mandrel component 30 is additionally provided with, after terminal box 13 is connected with external power source, mandrel component 30 rotates And the synchronous axial system of band logical cooling component 20, now, air enters cooling component 20 and by cooling component 20 by sky from air inlet 21 Gas velocity increases and pours into air channel 12 by cooling component 20, and mandrel component 30 carries out continuing radiating to host cavity 11.Due to core Shaft assembly 30 is interference fit with host cavity 11, therefore mandrel component 30 can also pass to host cavity 11 in the process of running Heat, so as to which heat be discharged from body fuselage 10, make more preferable from fanning wind cooling automatic tool changing electrical spindle radiating effect.Relative to tradition External axial flow blower radiating method, also more stepped up using the internal structure from fanning wind cooling automatic tool changing electrical spindle of the structure Gather, volume is smaller, also reduces difficulty of processing, saves processing cost.

As preferred embodiment, cooling component 20 includes rear cover of fan component 22 and impeller assembly 23；After fan Cap assemblies 22 are covered on the top of body fuselage 10；Impeller assembly 23 be arranged on rear cover of fan component 22 and Pneumatic assembly 50 it Between；The top of impeller assembly 23 is by rear cover of fan component 22 and the ft connection of body fuselage 10 and forms air inlet 21, preferably , rear cover of fan component 22 is located at air inlet 21, provided with for preventing foreign matter from entering should be from fanning wind cooling automatic tool changing electrical spindle Screen pack 221；The side of impeller assembly 23 is provided with air outlet 231；The bottom of rear cover of fan component 22 drawing formed with arc Wind passage 222；Air-inducing passage 222 is respectively communicated with air outlet 231 and air channel 12.Worked when from fanning wind cooling automatic tool changing electrical spindle When, mandrel component 30 rotates at a high speed, and air enters in impeller assembly 23 via air inlet 21 from screen pack 221, with impeller assembly 23 rotate at a high speed, and throw away air-flow under the action of the centrifugal force, gas flow rate increase, make gas that kinetic energy be converted in flowing quiet Pressure energy, then as the supercharging of gas, static energy and can is converted to speed, pass through the air outlet of the side of impeller assembly 23 231 discharge gases enter air channel 12, so that the middle of impeller assembly 23 forms certain negative pressure, make ambient atmos in atmospheric pressure Filled into immediately under effect, continue constantly to discharge and fill into gas under turning effort in impeller assembly 23, so as to be reached for outside body The purpose of the continuous blowing of shell 10.The air-inducing passage 222 that the high-speed gas of discharge are formed via rear cover of fan component 22, which introduces, to be received Air channel 12 between cavity volume 11 and Pneumatic assembly 50, mandrel component 30 is carried out to lasting dissipate to the heat that body fuselage 10 distributes Heat.

Specifically, impeller assembly 23 is made up of impeller front disc 232 and impeller hub disk 233, if being evenly equipped with impeller hub disk 233 Dry flabellum 2331, wherein three axial widths relative to impeller hub disk 233 in some flabellums 2331 are than remaining flabellum 2331 Width is big, and three larger surfaces of flabellum 2331 of width are provided with screw hole 2332, for be screwed into screw by impeller front disc 232 and Impeller hub disk 233 is anchored on one.In addition, some flabellums 2331 from close to one end of the pivot of impeller hub disk 233 toward remote One end height of the pivot of impeller hub disk 233 is gradually successively decreased, and impeller hub disk 233 is combined radially projecting's shape of flabellum 2331 It is generally conical shape, optimization airflow conversion effect.

As shown in figure 5, Pneumatic assembly 50 includes cylinder body 51, first piston 52 and second piston 53；The top of cylinder body 51 Formed with the first inlet plenum 511, the bottom of cylinder body 51 is formed with the second inlet plenum 512；The upper cap of cylinder body 51 is provided with and impeller The cylinder top cover 54 that component 23 is tightly connected, it is preferred that the upper surface of cylinder top cover 54 and the lower surface of impeller hub disk 233 are provided with The flange and groove that multiple tracks cooperates, after cylinder top cover 54 combines with impeller assembly 23, multiple tracks flange and groove phase interworking Conjunction forms labyrinth seal structure, prevents that cutting debris enters inside.The activity of second piston 53 is connected to cylinder body 51 and through One inlet plenum 511 and the second inlet plenum 512；One end that second piston 53 is located at the second inlet plenum 512 is provided with for pushing tool changing The pushing portion 531 of system 40；The roof of pushing portion 531 and the second inlet plenum 512 leans；The inlet plenum of pushing portion 531 and second Formed with the second air inlet 5121 connected with outside air pump between 512 roof；First piston 52 is located at the first inlet plenum 511 And fixed cover is located at second piston 53；It is provided between the lower surface of the inlet plenum 511 of first piston 52 and first and is used to first live 52 pushing tows are filled in the back-moving spring 514 of the bottom of cylinder top cover 54；First piston 52 leans with cylinder top cover 54；First piston 52 Formed with the first air inlet 5111 connected with outside air pump between cylinder top cover 54.The inlet plenum of first piston 52 and first The pin 521 for being used for stablizing the stroke of first piston 52 is provided between 511 lower surface；The one end of pin 521 and the first piston 52 is affixed, the lower surface of the other end the first inlet plenum 511 of direction, it is preferred that pin 521 is under the first inlet plenum 511 Surface, it is parallel with rotating shaft 31；Cylinder body 51 is provided with the guide groove for being used for coordinating with the socket of pin 521, is led so that pin 521 is located at Into groove toward polyslip.

Such as Fig. 5-6, and shown in Fig. 8, when lathe needs to carry out unloading knife, gases at high pressure are through the first air inlet 5111 and second Air inlet 5121 respectively enters the first inlet plenum 511 and the second inlet plenum 512, and gases at high pressure act on first piston 52 and pushed The upper surface in portion 531, first piston 52 and second piston 53 is promoted to be moved towards the direction of knife-changing system 40.Pushing portion 531 is moved through Journey pushes to knife-changing system 40, so that knife-changing system 40 unclamps the grasping to cutter；When lathe needs to carry out broaching tool, Knife step is unloaded in continuity, and cutter is loaded into knife-changing system 40, and the input of cutoff high gas, back-moving spring 514 is promoted first Piston 52 simultaneously drives second piston 53 to reset, and knife-changing system 40 is acted on by the internal power of disc spring 43, resets and completes broaching tool.

Mandrel component 30 includes rotating shaft 31 and the motor for drive shaft 31；Motor includes being arranged in rotating shaft 31 Rotor 32 and the stator 33 coordinated with rotor 32；The interference fit of stator 33 and host cavity 11；Rotating shaft 31 runs through rotor 32, turns Axle 31 is provided with upper bearing (metal) 311 close to one end of Pneumatic assembly 50, and is articulated in by upper bearing (metal) 311 in host cavity 11, positioned at The lower section of two pistons 53, other end activity are connected to knife-changing system 40.

In order to which rotating shaft 31 and upper bearing (metal) 311 can be realized, monoblock type dismounts, and the diameter of bore of stator 33 is more than upper bearing (metal) 311 Outside diameter.Due to rotating shaft 31 met in debugging process vibrations big, temperature rise or other it is abnormal when, generally require dismounting and turn Axle 31 is reset or renewal part, and traditional rotating shaft 31 is bigger than the diameter of bore of stator 33, it is necessary to first tear open because of the external diameter of upper bearing (metal) 311 After unsnatching upper bearing (metal) 311, rotating shaft 31 can be disassembled from body fuselage 10.Because bearing belongs to precision component, tearing open It is very easy to be damaged during unloading, so that the not reproducible use of its precise decreasing.Changed to reduce the maintenance of precision parts Cost, rotating shaft 31 is still integrated with upper bearing (metal) 311 after ensureing dismounting, and can completely be loaded in body fuselage 10 again, will be fixed Sub 33 bore designs are into the purpose that more than the external diameter diameter of upper bearing (metal) 311, can realize rotating shaft 31 and the integral disassembly, assembly of upper bearing (metal) 311.

Knife-changing system 40 includes rod assembly 41 and lower bearing sleeve 42；Lower bearing sleeve 42 is arranged under body fuselage 10 Portion, the inner chamber both ends of lower bearing sleeve 42 are respectively equipped with lower bearing 421 and middle (center) bearing 422；Rotating shaft 31 is articulated in the He of lower bearing 421 Middle (center) bearing 422；Rod assembly 41 is actively located in rotating shaft 31, and is coaxially disposed with rotating shaft 31；Rod assembly 41 is close to second One end of piston 53 is provided with the straight pin 411 for being used for compressing for pushing portion 531；Rotating shaft 31 is located inside one end of knife-changing system 40 Formed with annular groove 312；One end activity Tibetan that rod assembly 41 is located at knife-changing system 40 is provided with least two steel balls being oppositely arranged 413；Annular groove 312 is located at the lower section of steel ball 413, so that during rod assembly 41 is pushed by pushing portion 531, steel ball 413 can fall Enter in annular groove 312, it is preferred that one end that rod assembly 41 is located at knife-changing system 40 is provided with the pulling claw 412 hidden and set two steel balls 413. When lathe carries out unloading knife, gases at high pressure respectively enter the first inlet plenum through the first air inlet 5111 and the second air inlet 5121 511 and second inlet plenum 512, in the presence of gases at high pressure, the upper surface of first piston 52 and the upper surface of pushing portion 531 Moved simultaneously towards the direction of knife-changing system 40, pushing portion 531 is persistently mobile and pushing tow straight pin 411, drive rod assembly 41 and Pulling claw 412 also together moves, and when the steel ball 413 on pulling claw 412 moves down into the annular groove 312 of external diameter increase, two steel balls 413 will be certainly Pulling claw 412 is released by opening, the outside handle of a knife clamped by two steel balls 413 can then be unclamped by pulling claw 412, and knife is unloaded in completion.Work as lathe When carrying out broaching tool, gases at high pressure stop supply, and rod assembly 41 is with pulling claw 412 because first piston 52 and second piston 53 reset Together resetted by driving, in the reseting procedure of pulling claw 412, two steel balls 413 are hidden located at pulling claw 412 and outside handle of a knife is pressed from both sides again Tightly, until the conical surface of outside handle of a knife is close to the coincidence of the conical surface of rotating shaft 31 completely, broaching tool is completed.

In order to ensure the overall axiality from fanning wind cooling automatic tool changing electrical spindle, in second piston 53, activity, which is equipped with, is used for The shaft core 24 of impeller assembly 23 and straight pin 411 is connected respectively；Pivot, shaft core 24, the straight pin 411 of impeller assembly 23 And rod assembly 41 is coaxially disposed, so that rotating shaft 31 drives rod assembly 41, driven by straight pin 411 and shaft core 24 The synchronous axial system of impeller assembly 23, specifically, the wheel nave collar of impeller hub disk 233 is furnished with multiple screw counter bores 2333, for being screwed into spiral shell Impeller assembly 23 is anchored on the top of shaft core 24 by nail, reaches the purpose of synchronous axial system.

The entrance rotating shaft 31 such as debris is cut in order to avoid the utility model has during knife and broaching tool is unloaded, shape in shaft core 24 Into there is the first breather pipe 241, the second breather pipe 4111 formed with connection straight pin 411 both ends in straight pin 411, rod assembly The 3rd breather pipe 414 formed with connection rod assembly 41 both ends in 41；First breather pipe 241, the second breather pipe the 4111, the 3rd Breather pipe 414 is sequentially communicated, and the 3rd one end of breather pipe 414 away from Pneumatic assembly 50 is formed with gas outlet 4131；Cylinder body 51 1 Side is provided with for connecing the first air flue 513 that gas head is connected with outside；Shaft core 24 is provided with for the 3rd for the exhaust of the first air flue 513 Air flue 242；The side wall of second piston 53 is provided with the second air flue 532；Second air flue 532 is used for when second piston 53 pushes, and leads Logical first air flue 513 and the 3rd air flue 242, so that the gas of the first air flue 513 is discharged from gas outlet 4131.When gases at high pressure drive Make first piston 52 and second piston 53 towards the direction of knife-changing system 40 move when, after second piston 53 is moved to certain distance, Second air flue 532 then can turn on the first air flue 513 with the 3rd air flue 242, and gases at high pressure are via the first air flue 513, the second gas Road 532 and the 3rd air flue 242 enters shaft core 24, and from the first breather pipe 241, the second breather pipe 4111 and the 3rd breather pipe 414 Discharged again by gas outlet 4131 from rod assembly 41 and the through hole Jing Guo rotating shaft 31, the conical surface formation for finally reaching countershaft 31 are blown The effect of gas shielded, is avoided during knife and broaching tool is unloaded, and has foreign matter to enter rotating shaft 31.

As shown in fig. 7, in order that the reset effect of rod assembly 41 is more preferable during broaching tool, rod assembly 41 and rotating shaft 31 it Between be arranged with disc spring 43, gland 44 and elastic spring 45；The surface of rod assembly 41 is provided with deep-slotted chip breaker, and elastic spring 45 is connected in Deep-slotted chip breaker；Gland 44 is enclosed located at elastic spring 45, it is affixed with elastic spring 45 and for disc spring 43 provide pretightning force.While by In employing elastic spring 45, when needing to dismount rotating shaft 31, elastic spring 45 will not also burst apart winged in unloading process It is de-.From in the past different using circlip for shaft, circlip for shaft has lug, is easy to scrape rotating shaft in unloading process Inside 31, while also easily it is broken, departs from deep-slotted chip breaker, causes the pretension of disc spring 43 to fail.

Above-mentioned embodiment is only preferred embodiment of the present utility model, it is impossible to is protected with this to limit the utility model Scope, the change of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacing belongs to In the utility model scope claimed.

Claims (10)

1. It is 1. a kind of from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：

   Including body fuselage, cooling component, mandrel component, for clamp process tool and carry out the knife-changing system of process operation with And the Pneumatic assembly for driving the knife-changing system to clamp cutter；Formed with for accommodating in the body fuselage State the host cavity of cooling component and the mandrel component；The cooling component is arranged on the top of the host cavity and connects institute The outside and inside of host cavity are stated, so that air inlet is formed on the top of the host cavity；The knife-changing system is arranged on the machine The bottom of body case；The Pneumatic assembly is arranged on the bottom of the cooling component；The mandrel component is located at the tool changing system Between system and the Pneumatic assembly；Formed with air channel between the Pneumatic assembly and the host cavity；Described air channel one end and institute Cooling component connection is stated, the other end extends towards the mandrel component direction；The cooling component coaxially connects with the mandrel component Connect.
2. 2. as claimed in claim 1 from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：The cooling component includes fan Rear case component and impeller assembly；The rear cover of fan component is covered on the top of the body fuselage；The impeller assembly is set Put between the rear cover of fan component and the Pneumatic assembly；The top of the impeller assembly passes through the rear cover of fan component With the body fuselage ft connection and forming the air inlet；The side of the impeller assembly is provided with air outlet；The fan Air-inducing passage of the bottom of rear case component formed with arc；The air-inducing passage is respectively communicated with the air outlet and air channel.
3. 3. as claimed in claim 2 from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：The Pneumatic assembly includes cylinder Body, first piston and second piston；The top of the cylinder body is formed with the first inlet plenum, and the bottom of the cylinder body is formed with Two inlet plenums；The upper cap of the cylinder body is provided with the cylinder top cover being tightly connected with the impeller assembly；The second piston is lived It is dynamic to be connected to the cylinder body and through first inlet plenum and second inlet plenum；The second piston is positioned at described the One end of two inlet plenums is provided with the pushing portion for being used for pushing the knife-changing system；The top of the pushing portion and second inlet plenum Wall leans；Formed with the second air inlet connected with outside air pump between the pushing portion and the roof of second inlet plenum Mouthful；The first piston is located at first inlet plenum and fixed cover is located at the second piston；The first piston with it is described It is provided with and is used for the first piston pushing tow in the back-moving spring of the cylinder cap base between the lower surface of first inlet plenum； The first piston leans with the cylinder top cover；Between the first piston and the cylinder top cover formed with outside gas First air inlet of pump connection.
4. 4. as claimed in claim 3 from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：The first piston and described the The pin for being used for stablizing the first piston stroke is provided between the lower surface of one inlet plenum；Described pin one end and described first Piston is affixed, and the other end is towards the lower surface of first inlet plenum；The cylinder body, which is provided with to be used to be socketed with the pin, to be coordinated Guide groove so that the pin is located in the guide groove toward polyslip.
5. 5. as claimed in claim 3 from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：The mandrel component includes rotating shaft And for driving the motor of the rotating shaft；The motor includes the rotor being arranged in the rotating shaft and matched somebody with somebody with the rotor The stator of conjunction；The interference fit of the stator and the host cavity；The rotating shaft runs through the rotor, and the rotating shaft is close to described One end of Pneumatic assembly is provided with upper bearing (metal), and is articulated in the host cavity by the upper bearing (metal), positioned at the second piston Lower section, other end activity are connected to the knife-changing system.
6. 6. as claimed in claim 5 from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：The diameter of bore of the stator is big In the outside diameter of the upper bearing (metal).
7. 7. as claimed in claim 5 from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：The knife-changing system includes pull bar Component and lower bearing sleeve；The lower bearing sleeve is arranged on the bottom of the body fuselage, the inner chamber both ends of the lower bearing sleeve It is respectively equipped with lower bearing and middle (center) bearing；The rotating shaft is articulated in the lower bearing and the middle (center) bearing；The rod assembly is lived It is dynamic to be arranged in the rotating shaft, and be coaxially disposed with the rotating shaft；The rod assembly is set close to one end of the second piston There is the straight pin for being compressed for the pushing portion；One end that the rotating shaft is located at the knife-changing system has been internally formed annular groove； One end activity Tibetan that the rod assembly is located at the knife-changing system is provided with least two steel balls being oppositely arranged；The annular groove is located at The lower section of the steel ball, so that during the rod assembly is pushed by the pushing portion, the steel ball can fall into the annular groove In.
8. 8. as claimed in claim 7 from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：Activity is worn in the second piston Provided with the shaft core for connecting the impeller assembly and straight pin respectively；The pivot of the impeller assembly, the shaft core, The straight pin and the rod assembly are coaxially disposed, so that the rotating shaft drives the rod assembly, pass through the circle Pin and the shaft core drive the impeller assembly synchronous axial system.
9. 9. as claimed in claim 8 from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：Formed with first in the shaft core Breather pipe, formed with the second breather pipe for connecting the straight pin both ends in the straight pin, in the rod assembly formed with Connect the 3rd breather pipe at the rod assembly both ends；First breather pipe, second breather pipe, the 3rd breather pipe It is sequentially communicated, the described one end of 3rd breather pipe away from the Pneumatic assembly is formed with gas outlet；The cylinder body side is provided with use In connecing the first air flue that gas head is connected with outside；The shaft core is provided with for the 3rd air flue for first air flue exhaust；Institute The side wall for stating second piston is provided with the second air flue；Second air flue is used for when the second piston pushes, conducting described the One air flue and the 3rd air flue, so that the gas of first air flue is discharged from the gas outlet.
10. 10. as described in claim any one of 7-9 from fanning wind cooling automatic tool changing electrical spindle, it is characterised in that：The pull bar group Disc spring, gland and elastic spring are arranged between part and the rotating shaft；The rod assembly surface is provided with deep-slotted chip breaker, the steel Silk back-up ring is connected in the deep-slotted chip breaker；The gland is enclosed located at the elastic spring, it is affixed with the elastic spring and for pair The disc spring provides pretightning force.