CN216226933U

CN216226933U - High-speed electric spindle for machining center

Info

Publication number: CN216226933U
Application number: CN202122859713.1U
Authority: CN
Inventors: 沈翰
Original assignee: Dongguan Pinzhang Electromechanical Technology Co ltd
Current assignee: Dongguan Pinzhang Electromechanical Technology Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-08
Anticipated expiration: 2031-11-19

Abstract

The utility model belongs to the technical field of numerical control machine tool accessories, and particularly relates to a high-speed electric spindle for a machining center, which comprises a spindle shell and three tool bits, wherein a motor rotor in the spindle shell is connected with a motor shaft extending to the outer side of the spindle shell, one end of the motor shaft is integrally connected with positioning rods for assembling the tool bits, the number of the positioning rods is three, a base of each tool bit is fixedly connected with a positioning disc, the outer wall of the motor shaft is integrally connected with an electromagnetic positioning assembly for fixing the positioning disc, and a heat dissipation groove formed in the outer part of the spindle shell is fixedly connected with a quick heat dissipation assembly. According to the utility model, the electromagnetic positioning assembly is integrally connected on the outer wall of the motor shaft, the positioning disc is arranged on the base of the cutter head, the hole of the base correspondingly slides to the positioning rod during assembly, and then the positioning disc is fixed in the mode of the electromagnetic positioning assembly, so that the cutter head is rapidly assembled.

Description

High-speed electric spindle for machining center

Technical Field

The utility model relates to the technical field of numerical control machine tool accessories, in particular to a high-speed electric spindle for a machining center.

Background

The electric spindle is a new technology which integrates a machine tool spindle and a spindle motor into a whole and appears in the field of numerical control machines, the electric spindle comprises the electric spindle and accessories thereof, the electric spindle comprises an electric spindle, a high-frequency conversion device, an oil mist lubricator, a cooling device, a built-in encoder, a tool changing device and the like, a rotor of a motor is directly used as a spindle of the machine tool, a shell of a spindle unit is a motor base and is matched with other parts to realize the integration of the motor and the machine tool spindle, along with the progress of the technology, the use of the electric spindle is more mature, the electric spindle is smaller in space and higher in precision compared with the conventional electric spindle, and the electric spindle at the present stage still has some defects.

1. Firstly, the design of the cutter head part of the electric spindle at the present stage is not reasonable enough, the driving part of the cutter changing device is generally installed in the electric spindle, a hole is formed in the motor shaft, and the driving part is driven by the air cylinder, so that the overhauling difficulty and the inconvenience in maintenance are greatly increased, meanwhile, the cutter changing function of the electric spindle cannot be quickly realized when the electric spindle is used, and the using effect of the electric spindle is reduced.

2. Secondly, the motor and the bearing are arranged in the electric spindle, and the two parts can generate high temperature under high-speed operation, so that the cooling function is very important, the cooling mode at the present stage is generally water cooling or air cooling, the cooling mode is not good, and the cost is high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a high-speed electric spindle for a machining center, and solves the problems that the tool changing assembly of the electric spindle is unreasonable in design, inconvenient to overhaul and unsatisfactory in cooling mode of the electric spindle at the present stage.

(II) technical scheme

The utility model specifically adopts the following technical scheme for realizing the purpose:

the utility model provides a high-speed electric main shaft for machining center, includes main shaft housing and tool bit, the inside motor rotor of main shaft housing is connected with the motor shaft that extends to the main shaft housing outside, the one end an organic whole of motor shaft is connected with the locating lever that is used for assembling the tool bit, and the locating lever is provided with threely, fixedly connected with location disc on the base of tool bit, and an organic whole is connected with the electromagnetic positioning subassembly that is used for fixed location disc on the outer wall of motor shaft, the quick radiator unit of fixedly connected with on the radiating groove that the main shaft housing outside was seted up.

Furthermore, three holes for sliding the positioning rods are formed in the positions, corresponding to the positioning rods, of the base and the positioning disc.

Furthermore, the electromagnetic positioning assembly internally comprises an annular mounting frame arranged on the outer wall of the motor shaft and an electromagnetic coil arranged in a groove in the annular mounting frame.

Furthermore, a power interface is arranged on the annular mounting frame, and a power line arranged in the power interface is electrically connected with the electromagnetic coil.

Furthermore, quick radiator unit includes two annular semiconductor refrigeration pieces of fixed connection on main shaft housing, two all be provided with binding post one and binding post two on the annular semiconductor refrigeration piece.

Furthermore, the threaded hole formed in the annular semiconductor refrigeration piece is in threaded connection with a bolt used for fixing the rapid heat dissipation assembly in the heat dissipation groove.

(III) advantageous effects

Compared with the prior art, the utility model provides a high-speed electric spindle for a machining center, which has the following beneficial effects:

1. according to the utility model, the electromagnetic positioning assembly is integrally connected on the outer wall of the motor shaft, the positioning disc is arranged on the base of the cutter head, the positioning rod at the end part of the motor shaft is inserted into the hole of the base during assembly to position the cutter head, then the electromagnetic coil in the electromagnetic positioning assembly is powered on to adsorb and fix the positioning disc, so that the splicing and installation of the cutter head part are realized.

2. According to the utility model, the quick heat dissipation assembly is arranged in the heat dissipation groove of the spindle shell, the quick heat dissipation assembly is cooled through the semiconductor refrigeration sheet inside, and the power supply is switched on during use, so that the heat inside the electric spindle can be quickly absorbed, and is dissipated through the surface, thus the purpose of quick cooling is achieved, and the convenience in use is good.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure of FIG. 1 at A according to the present invention;

FIG. 3 is a schematic structural diagram of an electromagnetic positioning assembly according to the present invention;

fig. 4 is a schematic structural diagram of the rapid heat dissipation assembly of the present invention.

In the figure: 1. a spindle housing; 2. a heat sink; 3. a fast heat dissipation assembly; 301. an annular semiconductor refrigeration sheet; 302. a first wiring terminal; 303. a threaded hole; 304. a second wiring terminal; 4. a bolt; 5. a motor shaft; 6. positioning a rod; 7. a cutter head; 8. a base; 9. positioning the disc; 10. an electromagnetic positioning assembly; 1001. an annular mounting frame; 1002. a groove; 1003. an electromagnetic coil; 1004. and a power interface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1-4, a high-speed electric spindle for a machining center according to an embodiment of the present invention includes a spindle housing 1 and three tool bits 7, a motor rotor inside the spindle housing 1 is connected to a motor shaft 5 extending to an outer side of the spindle housing 1, one end of the motor shaft 5 is integrally connected to positioning rods 6 for assembling the tool bits 7, the three positioning rods 6 are provided, a base 8 of the tool bit 7 is fixedly connected to positioning discs 9, an outer wall of the motor shaft 5 is integrally connected to an electromagnetic positioning assembly 10 for fixing the positioning discs 9, and a heat dissipation groove 2 formed outside the spindle housing 1 is fixedly connected to a fast heat dissipation assembly 3; in summary, when the tool bit 7 is assembled, the base 8 and the positioning disc 9 are correspondingly inserted into the positioning rod 6 of the motor shaft 5, the tool bit 7 is positioned, then the circuit inside the electromagnetic positioning assembly 10 is closed, the power supply is switched on, the positioning disc 9 is fixed in an electromagnetic manner, so that the positioning disc 9 is stably fixed on the electromagnetic positioning assembly 10, the tool bit 7 is quickly fixed, when the tool bit is used, the motor rotor inside the spindle housing 1 is driven to work, the motor shaft 5 is driven to rotate, the external workpiece is processed, meanwhile, the spindle housing 1 is provided with the heat dissipation groove 2, the quick heat dissipation assembly 3 is installed inside the spindle housing 1, when the tool bit is used, the circuit on the quick heat dissipation assembly 3 is closed, the temperature inside the spindle housing 1 is absorbed, and the purpose of quickly cooling is achieved by surface dissipation; this high-speed electric main shaft user mode is good, can carry out the tool changing fast during the use, and the tool changing mode is more simple and convenient, and tool changing mechanism sets up in spindle housing 1's the outside, and convenient the maintenance, the inside cooling of high-speed electric main shaft can be realized fast to 3 reasonable in design of the quick radiator unit in the radiating groove 2 simultaneously.

As shown in fig. 1 and 2, in some embodiments, the base 8 and the positioning disc 9 have three holes for sliding the positioning rod 6 at positions corresponding to the positioning rod 6; through setting up the hole, the hole of base 8 and location disc 9 should be pegged graft to locating lever 6 during the equipment on, realize the location of base 8 and location disc 9.

As shown in fig. 1 and 3, in some embodiments, electromagnetic positioning assembly 10 includes an annular mounting frame 1001 disposed on an outer wall of motor shaft 5, and an electromagnetic coil 1003 mounted within annular mounting frame 1001 at a recess 1002; the power supply circuit of switch-on solenoid 1003 during the use, solenoid 1003 produce the appeal, fix positioning disc 9, and solenoid 1003 is stronger to positioning disc 9's fixed mode, and the fastness is good, can not rock, realizes positioning disc 9's fixed fast during the use, and then makes things convenient for the tool changing of electricity main shaft to handle.

As shown in fig. 3, in some embodiments, a power interface 1004 is disposed on the annular mounting frame 1001, a power line disposed in the power interface 1004 is electrically connected to the electromagnetic coil 1003, and the power interface 1004 is disposed on the annular mounting frame 1001 for inserting the power line to turn on a power supply outside the power interface 1004, so that the power supply can be fixed on the annular mounting frame 1001, and the power line does not form a winding along with the rotation of the motor shaft 5, thereby enabling the electromagnetic coil 1003 to be used normally.

As shown in fig. 4, in some embodiments, the rapid heat dissipation assembly 3 includes two annular semiconductor chilling plates 301 fixedly connected to the spindle housing 1, and a first connection terminal 302 and a second connection terminal 304 are disposed on each of the two annular semiconductor chilling plates 301; the power supply circuit of the first connecting terminal 302 and the second connecting terminal 304 is connected during use to form a passage of the circuit of the annular semiconductor refrigeration piece 301, the inner wall of the annular semiconductor refrigeration piece 301 can be cooled by the spindle housing 1 to absorb heat, and the heat is dissipated out of the outer surface of the annular semiconductor refrigeration piece 301 to achieve the purpose of rapid cooling.

As shown in fig. 1 and 4, in some embodiments, a threaded hole 303 formed in the annular semiconductor chilling plate 301 is threadedly connected with a bolt 4 for fixing the rapid heat dissipation assembly 3 in the heat dissipation slot 2; the fixing of the annular semiconductor refrigeration piece 301 in the radiating groove 2 can be realized through the mode, the dismounting is simple and convenient, the dismounting and the maintenance processing can be carried out, the bolt 4 is installed at the corresponding threaded hole 303 during the assembling, and the fixing of the annular semiconductor refrigeration piece 301 in the radiating groove 2 is realized.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed electric spindle for a machining center, comprising a spindle housing (1) and a tool bit (7), characterized in that: the motor rotor inside spindle housing (1) is connected with motor shaft (5) that extend to the spindle housing (1) outside, the one end an organic whole of motor shaft (5) is connected with locating lever (6) that are used for assembling tool bit (7), and locating lever (6) are provided with threely, fixedly connected with location disc (9) on base (8) of tool bit (7), and an organic whole is connected with electromagnetic positioning component (10) that are used for fixed location disc (9) on the outer wall of motor shaft (5), fixedly connected with quick radiating component (3) on radiating groove (2) that spindle housing (1) outside was seted up.

2. A high-speed electric spindle for a machining center according to claim 1, characterized in that: three holes used for sliding the positioning rod (6) are formed in the positions, corresponding to the positioning rod (6), of the base (8) and the positioning disc (9).

3. A high-speed electric spindle for a machining center according to claim 1, characterized in that: the electromagnetic positioning assembly (10) comprises an annular mounting frame (1001) arranged on the outer wall of a motor shaft (5) and an electromagnetic coil (1003) mounted in a groove (1002) in the annular mounting frame (1001).

4. A high-speed electric spindle for a machining center according to claim 3, characterized in that: the annular mounting frame (1001) is provided with a power supply interface (1004), and a power line arranged in the power supply interface (1004) is electrically connected with the electromagnetic coil (1003).

5. A high-speed electric spindle for a machining center according to claim 1, characterized in that: quick radiator unit (3) are including two annular semiconductor refrigeration pieces (301) of fixed connection on main shaft shell (1), two all be provided with binding post one (302) and binding post two (304) on annular semiconductor refrigeration piece (301).

6. A high-speed electric spindle for a machining center according to claim 5, characterized in that: and the threaded hole (303) formed in the annular semiconductor refrigerating piece (301) is in threaded connection with a bolt (4) used for fixing the quick heat dissipation assembly (3) in the heat dissipation groove (2).