CN211331339U

CN211331339U - High-speed servo electric spindle

Info

Publication number: CN211331339U
Application number: CN201921510429.XU
Authority: CN
Inventors: 何源; 曹鲜红
Original assignee: Shenzhen Linglve CNC Equipment Co Ltd
Current assignee: Shenzhen Linglve CNC Equipment Co Ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-08-25
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a high-speed servo electric main shaft, which comprises a box body, a rotor, a stator, a sleeve, a front end cover, a bearing seat, a rear end cover, a fan cover, a connecting seat, a tail cover, a cooling fan and an encoder; the rotor is provided with an angular contact bearing. The utility model effectively solves the problem that the electric spindle is lack of servo control; the problem that the high-speed electric spindle is high in cost is effectively solved.

Description

High-speed servo electric spindle

Technical Field

The utility model relates to an electricity main shaft, in particular to high-speed servo electricity main shaft.

Background

The existing electric spindle is high in cost and mostly lacks servo control, and a high-speed electric spindle with proper cost and servo control needs to be developed in the aspects of reducing cost, improving control precision and the like.

Disclosure of Invention

The utility model aims to solve the technical problem of a high-speed servo electric spindle which has higher rotation speed, better radial run-out tolerance, servo control and moderate cost.

The utility model discloses a realize through following technical scheme: a high-speed servo electric spindle comprises a box body, a rotor, a stator, a sleeve, a front end cover, a bearing seat, a rear end cover, a fan cover, a connecting seat, a tail cover, a cooling fan and an encoder; an angular contact bearing is arranged on the rotor; one end of the rotor is provided with a conical hole; be equipped with two bearing installation positions on the rotor, the rotor is close to one department in the circular cone hole and is used for installing two angular contact bearings, is equipped with the sleeve between two angular contact bearings, and sleeve terminal surface and angular contact bearing inner race contact, and a deep groove ball bearing is installed to the rotor other end: the two angular contact bearings are arranged in the bearing block, and the deep groove ball bearing is arranged in the rear end cover; the box body is provided with an air duct for heat dissipation in the axial direction, the tail cover is arranged on two side faces of the fan cover, and the encoder is arranged in the tail cover.

As a preferred technical scheme, a plurality of rubidium iron boron magnets are adhered to the circumferential surface of the middle of the rotor, the number of stages is 14, the armature on the stator has 12 concentrated windings in total, the concentrated windings are three-phase symmetrical windings, and the stator is arranged in the box body.

As the preferred technical scheme, a wave-shaped elastic cushion is arranged between the deep groove ball bearing and the rear end cover to automatically compensate the axial clearance of the rotor.

As a preferred technical scheme, the cooling fan is provided with a mounting hole which is a special-shaped hole with an upper flat position and a lower flat position, the rotor is provided with a mounting flat position for mounting the cooling fan, and the shaft is used for axially positioning the cooling fan by using a clamp spring; the cooling fan is arranged inside the fan cover.

As a preferred technical scheme, one end of the rotor is provided with a frustum-shaped structure for installing the encoder; the encoder is provided with a conical surface hole, and the conical surface hole of the encoder is attached to the frustum-shaped structure; the connecting seat installed on the fan cover is provided with a threaded hole, the encoder is provided with a thread matched with the threaded hole, and the encoder is installed in the threaded hole through thread engagement.

As a preferable technical scheme, one end of the rotor is provided with a first thread, the front end cover is provided with a second thread matched with the first thread, and the front end cover is screwed into a position contacted with an inner ring of the angular contact bearing through the thread to axially compress the angular contact bearing in the bearing seat; the front end cover is provided with a punching position.

The utility model has the advantages that:

1. the problem that the motorized spindle is lack of servo control is effectively solved;

2. the problem that the high-speed electric spindle is high in cost is effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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: the embodiment of the utility model provides a stereogram of electricity main shaft.

FIG. 2: the embodiment of the utility model provides an inside cross-sectional view of electricity main shaft.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and 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 therefore, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The embodiment of the utility model provides a structure of electricity main shaft is as shown in fig. 1 and fig. 2, including box 1, rotor 2, front end housing 3, bearing frame 4, fan cover 5, tail cover 6, stator 7, sleeve 8, rear end cap 9, connecting seat 10, cooling fan 11, encoder 12.

Wherein, the circumference surface in the middle of rotor 2 pastes a plurality of rubidium iron boron magnet, the level is 14, the armature on stator 7 has 12 concentrated windings in total, for three-phase symmetrical winding, stator 7 is installed in the box 1. The rotor 2 is provided with a highly accurate conical bore at one end, in particular with a high full run-out tolerance with respect to the bearing position of the rotor.

The rotor 2 is provided with two bearing mounting positions, one position close to the cutter mounting taper hole is used for mounting two angular contact bearings 13, a sleeve 8 is arranged between the two angular contact bearings 13, and the end face of the sleeve 8 is in contact with the inner ring of the angular contact bearing 13; the other end of the rotor 2 is provided with a deep groove ball bearing 14. Two angular contact bearings 13 are arranged in the bearing block 4, the deep groove ball bearing 14 is arranged in the rear end cover 9, and a wave-shaped elastic cushion is arranged between the deep groove ball bearing 14 and the rear end cover 9 to automatically compensate the axial clearance of the rotor 2.

The mounting hole of the cooling fan 11 is a special-shaped hole with upper and lower flat positions, the corresponding position on the rotor 2 is also provided with a flat mounting position for mounting the cooling fan 11, and the shaft is used for axially positioning the cooling fan 11 by using a clamp spring; the cooling fan 11 is disposed inside the fan cover 5. One end of the rotor 2 is provided with a frustum structure for mounting the encoder 12, and a conical surface hole of the encoder 12 is attached to the frustum structure during mounting; the coupling holder 10 mounted on the fan cover 5 is provided with a screw hole for fixing the encoder 12. An air duct for heat dissipation is arranged in the axial direction of the box body 1, and the circulation speed of air in the air duct can be increased under the action of the cooling fan 11, so that the heat dissipation capability is improved. Tail covers 6 are mounted on both sides of the fan cover 5 to protect the encoder 12 therein.

One end of the rotor 2 is provided with a thread, and the front end cover 3 is screwed into a position contacted with an inner ring of the angular contact bearing 13 so as to axially press the angular contact bearing 13 in the bearing seat 4. And the front end cover 3 is reserved with a punching position for adjusting the dynamic balance of the rotor 2.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A high-speed servo motorized spindle, comprising: the motor comprises a box body, a rotor, a stator, a sleeve, a front end cover, a bearing seat, a rear end cover, a fan cover, a connecting seat, a tail cover, a cooling fan and an encoder; an angular contact bearing is arranged on the rotor; one end of the rotor is provided with a conical hole; be equipped with two bearing installation positions on the rotor, the rotor is close to one department of taper hole and is used for installing two angular contact bearings, is equipped with the sleeve between two angular contact bearings, and sleeve terminal surface and angular contact bearing inner race contact, and a deep groove ball bearing is installed to the rotor other end: the two angular contact bearings are arranged in the bearing block, and the deep groove ball bearing is arranged in the rear end cover; the box body is provided with an air duct for heat dissipation in the axial direction, the tail cover is arranged on two side faces of the fan cover, and the encoder is arranged in the tail cover.

2. A high speed servo motorized spindle as set forth in claim 1, wherein: the middle circumferential surface of the rotor is pasted with a plurality of rubidium iron boron magnets, the number of stages is 14, the armature on the stator has 12 concentrated windings in total, the concentrated windings are three-phase symmetrical windings, and the stator is arranged in the box body.

3. A high speed servo motorized spindle as set forth in claim 1, wherein: a wave-shaped elastic pad is arranged between the deep groove ball bearing and the rear end cover to automatically compensate the axial clearance of the rotor.

4. A high speed servo motorized spindle as set forth in claim 1, wherein: the cooling fan is provided with a mounting hole which is a special-shaped hole with an upper flat position and a lower flat position, the rotor is provided with a mounting flat position for mounting the cooling fan, and the shaft is used for axially positioning the cooling fan by using a clamp spring; the cooling fan is arranged inside the fan cover.

5. A high speed servo motorized spindle as set forth in claim 1, wherein: one end of the rotor is provided with a frustum-shaped structure for installing the encoder; the encoder is provided with a conical surface hole, and the conical surface hole of the encoder is attached to the frustum-shaped structure; the connecting seat installed on the fan cover is provided with a threaded hole, the encoder is provided with a thread matched with the threaded hole, and the encoder is installed in the threaded hole through thread engagement.

6. A high speed servo motorized spindle as set forth in claim 1, wherein: one end of the rotor is provided with a first thread, the front end cover is provided with a second thread matched with the first thread, and the front end cover is screwed into a position contacted with the inner ring of the angular contact bearing through the thread to axially compress the angular contact bearing in the bearing seat; the front end cover is provided with a punching position.