CN217831882U - Electric spindle device with reinforced air cooling structure - Google Patents

Abstract

The utility model belongs to the technical field of equipment, concretely relates to electricity main shaft device with strengthen forced air cooling structure, include: the motor comprises a base shaft, a rotor, a stator, a machine body and a reinforcing assembly, wherein the base shaft, the rotor, the stator, the machine body and the reinforcing assembly are coaxially arranged from inside to outside in sequence; the front end of the front bearing seat is provided with a front end cover, the front bearing seat and the rear bearing seat are correspondingly provided with a plurality of front bearings and rear bearings side by side, a locking part is embedded between the front end cover and the front bearing seat, and the front end of the locking part is provided with a concave oil seal for enhancing sealing in an invagination manner. The axial stability is obtained by adding the balance ring and the adjusting hole for centering, the front bearing is cooled by the front cooling flow channel, and the rear bearing, the base shaft and the rotor are cooled by the rear cooling flow channel, so that a stable cooling space from back to front and from outside to inside is provided, and the comprehensive, stable, safe and convenient effects of the electric main shaft device with the reinforced air cooling structure are further realized.

Description

Electric spindle device with reinforced air cooling structure

Technical Field

The utility model belongs to the technical field of equipment, concretely relates to electricity main shaft device with strengthen forced air cooling structure.

Background

The electric spindle is a new technology integrating a machine tool spindle and a spindle motor, is well matched with a linear motor and a novel cutter, and leads high-speed machining to enter a new era. As a combined transmission structure of a spindle motor and a machine tool spindle, the length of a main transmission chain of the machine tool is shortened to zero by the electric spindle, zero transmission of the machine tool is realized, a spindle part is relatively and independently formed into a spindle unit from a transmission system of equipment and the whole structure, and the combined transmission structure has the advantages of high rotating speed, high precision, low noise motion characteristic, compact structure and quick response. The numerical control machine tool or the machining center has the advantages that the automatic tool changing structure and the good automatic tool changing system are required to realize one-time clamping and multi-process machining, the application range of the numerical control machine tool is expanded, the positioning times of part installation are reduced, the machining precision is improved, and the productivity is obviously improved.

In order to keep the excellent characteristics of high rotating speed, high precision and low noise of the electric spindle, the air cooling method is an effective means for cooling, has the advantages of obvious cooling effect and wide practical application, has the defect that the vital heat dissipation kinetic energy and an effective cooling flow channel must be maintained, and is particularly imperative for the super-high-speed special electric spindle with the rotating speed of tens of thousands to hundreds of thousands of revolutions per minute and an electric spindle device with a reinforced air cooling structure.

The traditional Chinese patent with publication number CN214392369U discloses a self-balancing electric spindle with automatic pretension, which comprises a spindle assembly, a shell assembly, an upper balance head assembly, a disc spring and lower balance head assembly, a bearing pretension automatic adjusting and bearing assembly, an automatic balancing device, a cooling water system consisting of a stator cooling water system, a rotor cooling water system and a bearing cooling water system, and a bearing lubricating system. Through addding the utility model discloses a device such as vibrations sensor, temperature sensor, bearing pretightning force automatic regulating mechanism, upper balance head subassembly, lower balance head subassembly, spiral cable and automatic control appearance and cooling water system have prolonged the life of electricity main shaft, have avoided the operation of stop equipment to come the maintenance trouble, have improved product quality and productivity.

The above prior art solution has the following drawbacks: although the problem of prolonging the service life of the electric spindle is solved, and the technical problem of maintenance in a shutdown process is solved, the scheme still lacks a high-quality and reliable reinforced air cooling structure, and the safety, reliability, durability and high efficiency of cooling of the electric spindle device are comprehensively ensured when the ultrahigh-speed operation is required.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electricity main shaft device with strengthen forced air cooling structure, the reply is solved under the hypervelocity operation load reliable cooling of electricity main shaft and is strengthened refrigerated problem to the messenger has the electricity main shaft device cooling function of strengthening the forced air cooling structure and can promote comprehensively and fully perfect.

In order to solve the above technical problem, the utility model provides an electricity main shaft device with strengthen forced air cooling structure, include: the fan comprises a base shaft, a rotor, a stator, a machine body and a reinforcing assembly, wherein the base shaft, the rotor, the stator, the machine body and the reinforcing assembly are coaxially arranged from inside to outside in sequence;

a locking piece is embedded between the front end cover and the front bearing seat;

the rear end of the front end cover is abutted to the front bearing inner stop;

the front end of the locking piece is inwards provided with a concave oil seal for enhancing sealing.

Furthermore, the reinforcing component also comprises balance rings arranged at two ends of the rotor;

the inner wall of the balance ring is screwed with the periphery of the base shaft;

the middle part of the balance ring is provided with an adjusting hole for axial centering;

the balance ring is abutted to the inner gear of the rear bearing.

Furthermore, the reinforcing component also comprises a broach rod coaxially attached to the inner wall of the base shaft and an air cylinder coaxially hinged to the rear end of the broach rod;

the cylinder is coaxially and movably connected with a cylinder seat;

the cylinder seat with circumference butt is equipped with a plurality of reset springs between the cylinder.

Furthermore, the reinforcing assembly also comprises a plurality of through holes and side through holes which are correspondingly arranged on the end surface of the front bearing seat in the circumferential direction, and a plurality of side through holes which are arranged on the front end and the rear end of the machine body in the circumferential direction;

the locking piece is circumferentially provided with a plurality of longitudinal cooling grooves, and the diameter from the cooling groove at the front end to the rear wall of the locking piece is slightly smaller than that of the front part of the locking piece;

the through hole is used for extending and communicating with the cooling groove;

the through hole is communicated with the side through hole and the front end bypass hole;

the periphery of the balance ring at the front end and the rear end is provided with a cooling channel;

the front end and the rear end of the bypass hole are used for extending and communicating with the cooling channel.

Furthermore, the reinforcing component also comprises an air cooling cavity which is accommodated at the front end of the fan;

the air-cooled cavity, the engine body inner cavity and the rear side the by-pass hole is connected with a backward cooling runner, and the front side the by-pass hole, the side through hole and the through hole are connected with a forward cooling runner.

Furthermore, the reinforcing assembly also comprises a plurality of nozzles arranged on the circumferential direction of the front bearing seat and joints arranged on the side wall of the machine body;

the nozzle is connected with the through hole;

the joint is connected with an external air pump.

Further, a power supply cavity is attached to the periphery of the machine body;

the side face of the power supply cavity is provided with a plurality of wiring ends, and the fan is connected with the wiring ends through cables.

The utility model has the advantages that:

1. the structure that the front bearing and the rear bearing are symmetrically arranged side by side is added, so that the axial stability and the uniform integral stress of the device are ensured, the reliable and stable connection of a connecting part is ensured by the structures of the front bearing, the front end cover and the front bearing seat as well as the structures of the rear bearing, the rear end cover and the rear bearing seat, the coaxiality and the good form and position size precision of a base shaft, a rotor, a stator, a machine body, a cylinder and a fan are ensured, and the low noise and the uniform stress of reinforcement are ensured; the concave oil seal is a labyrinth seal structure, a lubricating film is laid on the surface of the concave oil seal to adsorb impurities, and a sealing medium is difficult to overflow after being placed for a long time when passing through a tortuous gap so as to achieve the sealing and leakage-resisting effect; the balance ring is screwed with the base shaft to ensure circumferential stability, and the balance ring is abutted with the inner gear of the rear bearing and is centered with the adjusting hole to obtain axial reinforcement stability; the cylinder axially reciprocates to complete the step of pulling and pushing the broach rod, the reset spring has a bidirectional rebound reset function of reacting after the broach rod is pulled and pressed, the joint is driven by an external air pump, and the nozzle can play a role of air sealing and dust removal; the fan is additionally provided with the vortex fan blades in streamline configuration, so that the main wind resistance and the backflow wind power are reduced, and the continuous and powerful kinetic energy is provided overall; the through hole link up the preceding cooling runner that side through-hole, cooling bath, organism cavity space and forced air cooling cavity formed with the preceding bearing that dispels the heat, and the backward cooling runner that front and back side by-pass hole extended intercommunication cooling channel and forced air cooling cavity formed is used for reinforceing cooling rear bearing, base shaft and rotor, wholly provides from the reliable cooling passageway and the outside-in reinforcement heat dissipation space in the back forward, satisfies the high-efficient lasting and reliable refrigerated demand of electric main shaft device that has the enhancement forced air cooling structure comprehensively.

2. The power cavity is additionally arranged outside the machine body to ensure convenient and reasonable wiring and stable heat dissipation and reliable cooling, so that the effect of lasting, reliable, safe and convenient electric spindle device with a reinforced air cooling structure is comprehensively realized.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of an electric spindle device with a reinforced air cooling structure according to the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is an enlarged view at B in fig. 1.

In the figure:

1. a base shaft;

2. a rotor;

3. a stator;

4. a body;

5. a reinforcement assembly; 51. a front bearing seat; 511. a front end cap; 512. a front bearing; 513. a locking member; 514. a concave oil seal; 515. a cooling tank; 516. a cooling channel; 52. a rear bearing seat; 521. a rear end cap; 522. a rear bearing; 53. a fan; 54. a balance ring; 541. an adjustment hole; 55. pulling a cutter rod; 56. a cylinder; 561. a cylinder block; 562. a return spring; 57. a through hole; 571. a side via; 572. a bypass orifice; 58. an air-cooled cavity; 581. a backward cooling flow channel; 582. a forward cooling flow channel; 59. a nozzle; 591. a joint;

6. a power supply cavity; 61. and a terminal.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention are described clearly and completely below with reference to the accompanying drawings. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

as shown in fig. 1 to 3, the electric spindle device with reinforced air cooling structure of the present invention includes: the motor comprises a base shaft 1, a rotor 2, a stator 3, a machine body 4 and a reinforcing assembly 5 which are coaxially arranged from inside to outside in sequence, wherein the reinforcing assembly 5 comprises a front bearing seat 51 and a rear bearing seat 52 which are correspondingly arranged on the front side and the rear side of the rotor 2 and a fan 53 which is coaxially arranged on the rear end of the machine body 4, a front end cover 511 and a rear end cover 521 are correspondingly arranged at the front end of the front bearing seat 51 and the rear end of the rear bearing seat 52, a plurality of front bearings 512 and rear bearings 522 are correspondingly arranged in the front bearing seat 51 and the rear bearing seat 52 side by side, and a locking member 513 is embedded between the front end cover 511 and the front bearing seat 51; the rear end of the front end cover 511 is abutted against the inner stop of the front bearing 512; the front end of the locking member 513 is recessed with a h-shaped oil seal 514 for enhancing the sealing. Strengthen subassembly 5 still includes the balance ring 54 that rotor 2 both ends all were equipped with, balance ring 54 inner wall connects the base shaft 1 periphery soon, and balance ring 54 middle part is equipped with the adjusting hole 541 that is used for the axial centering, and balance ring 54 butt rear bearing 522 inner stop. The reinforcing component 5 also comprises a broach rod 55 coaxially attached to the inner wall of the base shaft 1 and an air cylinder 56 coaxially hinged to the rear end of the broach rod 55, wherein the air cylinder 56 is coaxially and movably connected with an air cylinder seat 561; a plurality of return springs 562 are circumferentially abutted between the cylinder seat 561 and the cylinder 56.

The reinforcing component 5 further comprises a plurality of through holes 57 and side through holes 571 which are correspondingly arranged on the end surface of the front bearing seat 51 in the circumferential direction, and a plurality of bypass holes 572 which are arranged on the front end and the rear end of the machine body 4 in the circumferential direction; a plurality of longitudinal cooling grooves 515 are formed in the circumferential direction of the locking member 513, the diameter from the front end cooling groove 515 to the rear wall of the locking member 513 is slightly smaller than that of the front portion of the locking member 513, the through holes 57 are used for extending and communicating the cooling grooves 515, and the through holes 57 are communicated with the side through holes 571 and the front end bypass holes 572; the front and rear balance rings 54 have cooling passages 516 peripherally received therein. The reinforcing component 5 further comprises an air cooling cavity 58 accommodated at the front end of the fan 53, the air cooling cavity 58, the inner cavity of the body 4 and the rear side bypass hole 572 are connected with a backward cooling channel 581, and the front side bypass hole 572, the side through hole 571 and the through hole 57 are connected with a forward cooling channel 582. The reinforcing assembly 5 further comprises a plurality of nozzles 59 arranged on the periphery of the front bearing seat 51 and a connector 591 arranged on the side wall of the machine body 4, wherein the nozzles 59 are connected with the through holes 57, and the connector 591 is connected with an external air pump.

It is apparent that the front bearing 512, the rear bearing 522, the balance ring 54, and the broach rod 55 are inspected in advance. The front bearing 512 and the rear bearing 522 are symmetrically arranged side by side to ensure axial stability and uniform stress, the front bearing 512 and the front end cover 511 as well as the rear bearing 522 and the rear end cover 521 are stably and reliably connected, the basic shaft 1, the rotor 2, the stator 3, the machine body 4, the cylinder 56 and the fan 53 are coaxial and have good form and position dimensional accuracy, and stable low noise and uniform stress are ensured; the proposal is that the surface of the additionally arranged concave oil seal 514 is not limited to be laid with a lubricating film to adsorb impurities, and the sealing medium of the concave oil seal 514 is placed in a bent gap for a long time and is difficult to overflow so as to achieve the sealing and leakage-resisting effect; the balance ring 54 is screwed with the base shaft 1, so that the circumferential stability can be realized, and the balance ring 54 is abutted with the inner gear of the rear bearing 522 and is centered and positioned with the adjusting hole 541 to obtain the axial stability; the cylinder 56 axially reciprocates to complete the step of pulling and pushing the pull tool rod 55, the return spring 562 has a reverse bidirectional rebound return function, the joint 591 is driven by an external air pump, and the nozzle 59 can play a role in air sealing and dust removal; the fan 53 is additionally provided with streamline configuration vortex fan blades to reduce forward wind resistance and side backflow wind power, and provides continuous powerful kinetic energy as a whole; the method includes but is not limited to adding a through hole 57 to penetrate through a side through hole 571, a cooling groove 515, a machine body cavity and an air-cooled cavity 58 to form a forward cooling channel 582 so as to dissipate heat of a front bearing 512, and a front side bypass hole 572 and a rear side bypass hole 572 extend to communicate with a cooling channel 516 and the air-cooled cavity 58 to form a backward cooling channel 581 to strengthen cooling of a rear bearing 522, a base shaft 1 and a rotor 2.

As shown in fig. 1 to 3, in the electric spindle device with a reinforced air cooling structure of the present invention, a square casing 6 is attached to the outer periphery of the machine body 4, and a junction box 61 is disposed on the top surface of the casing 6;

the terminal box 61 is provided with a plurality of terminals 62 on the side, and the turbofan 58 is connected to the terminals 62 through cables.

More clear and definite, add square casing 6 through organism 4 outward and maintain the structure firm to guarantee the reliable cooling of the lasting heat dissipation of electricity main shaft, the side wiring end 61 of establishing of casing 6 helps the convenient reasonable of wiring, realizes having the comprehensive stable and safe convenient efficiency of the electricity main shaft device of strengthening the forced air cooling structure.

In conclusion, in the embodiment, the base shaft 1, the rotor 2, the stator 3, the machine body 4, the cylinder 56 and the fan 53 are all ensured to be coaxial, so that good form and position dimensional accuracy is ensured to achieve stable low noise and average stress, a lubricating film is laid on the surface of the concave oil seal 514 to adsorb impurities, and the sealing medium of the concave oil seal 514 is placed in the zigzag gap for a long time and is difficult to overflow so as to achieve the sealing and leakage-resisting effect; the balance ring 54 is abutted against the inner gear of the rear bearing 522 and is centered and positioned with the adjusting hole 541 to obtain axial stability; the cylinder 56 axially reciprocates to complete the step of pulling and pushing the pull knife rod 55, the return spring 562 has a bidirectional rebound return function, the nozzle 59 plays a role in air sealing and dust removal, and the wiring end 61 is arranged beside the shell 6 to facilitate convenient and reasonable wiring; the fan 53 is additionally provided with vortex blades in streamline configuration to reduce forward wind resistance and side backflow wind power, so that continuous strong kinetic energy is provided; the through hole 57 penetrates through the side through hole 571, the cooling groove 515, the body cavity and the air-cooled cavity 58 to form a forward cooling channel 582 for heat dissipation of the front bearing 512, the front side bypass hole 572 and the rear side bypass hole 572 extend to communicate with the cooling channel 516 and the air-cooled cavity 58 to form a backward cooling channel 581 for enhanced cooling of the rear bearing 522, the base shaft 1 and the rotor 2, a reliable cooling from the back to the front and enhanced heat dissipation space from the outside to the inside are provided, and the comprehensive, stable, safe and convenient effects of the electric spindle device with the enhanced air-cooled structure are achieved.

In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or relationships based on the orientations or relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (7)

1. An electric spindle device with a reinforced air cooling structure, comprising: the motor comprises a base shaft (1), a rotor (2), a stator (3), a machine body (4) and a reinforcing component (5) which are coaxially arranged from inside to outside in sequence;

the reinforcing component (5) comprises a front bearing seat (51) and a rear bearing seat (52) which are correspondingly arranged on the front side and the rear side of the rotor (2) and a fan (53) which is coaxially arranged at the rear end of the machine body (4);

a front end cover (511) and a rear end cover (521) are correspondingly arranged at the front end of the front bearing seat (51) and the rear end of the rear bearing seat (52), and a plurality of front bearings (512) and rear bearings (522) are correspondingly arranged in the front bearing seat (51) and the rear bearing seat (52) side by side;

a locking piece (513) is embedded between the front end cover (511) and the front bearing seat (51);

the rear end of the front end cover (511) is abutted against the inner gear of the front bearing (512);

the front end of the locking piece (513) is inwards provided with a concave oil seal (514) for enhancing sealing.

2. The electric spindle device with the reinforced air cooling structure is characterized in that the reinforcing component (5) further comprises a balance ring (54) arranged at both ends of the rotor (2);

the inner wall of the balance ring (54) is screwed with the periphery of the base shaft (1);

the middle part of the balance ring (54) is provided with an adjusting hole (541) for axial centering;

the balance ring (54) abuts against an inner rail of the rear bearing (522).

3. The electric spindle device with the reinforced air cooling structure is characterized in that the reinforcing component (5) further comprises a pulling rod (55) coaxially attached to the inner wall of the base shaft (1) and an air cylinder (56) coaxially hinged to the rear end of the pulling rod (55);

the cylinder (56) is coaxially and movably connected with a cylinder seat (561);

a plurality of return springs (562) are arranged between the cylinder seat (561) and the cylinder (56) in a circumferential abutting mode.

4. The electric spindle device with the reinforced air cooling structure as claimed in claim 2, wherein the reinforcing component (5) further comprises a plurality of through holes (57) and side through holes (571) which are correspondingly arranged on the end surface and the circumferential direction of the front bearing seat (51) and a plurality of bypass holes (572) which are arranged on the circumferential direction of the front end and the rear end of the machine body (4);

a plurality of longitudinal cooling grooves (515) are circumferentially arranged on the locking member (513), and the diameter from the cooling groove (515) at the front end to the rear wall of the locking member (513) is slightly smaller than that of the front part of the locking member (513);

the through hole (57) is used for extending and communicating with the cooling groove (515);

the through hole (57) communicates the side through hole (571) and the front end bypass hole (572);

the periphery of the balance ring (54) at the front end and the rear end is provided with a cooling channel (516);

the front end and the rear end bypass holes (572) are used for extending and communicating the cooling channel (516).

5. The electric spindle device with the reinforced air cooling structure according to claim 4, wherein the reinforcing assembly (5) further comprises an air cooling cavity (58) accommodated at the front end of the fan (53);

the air-cooled cavity (58), the inner cavity of the machine body (4) and the bypass hole (572) on the rear side are connected with a backward cooling flow channel (581), and the bypass hole (572) on the front side, the side through hole (571) and the through hole (57) are connected with a forward cooling flow channel (582).

6. The electric spindle device with the reinforced air cooling structure is characterized in that the reinforcing assembly (5) further comprises a plurality of nozzles (59) arranged on the periphery of the front bearing seat (51) and a joint (591) arranged on the side wall of the machine body (4);

the nozzle (59) is connected with the through hole (57);

the joint (591) is connected with an external air pump.

7. The electric spindle device with the reinforced air cooling structure according to claim 6, wherein a power cavity (6) is attached to the outer periphery of the machine body (4);

the side of the power cavity (6) is provided with a plurality of wiring terminals (61), and the fan (53) is connected with the wiring terminals (61) through cables.

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