CN221305605U

CN221305605U - Integrated spindle motor

Info

Publication number: CN221305605U
Application number: CN202322788005.2U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Shenzhen Xhorse Electronics Co Ltd
Current assignee: Shenzhen Xhorse Electronics Co Ltd
Priority date: 2023-10-18
Filing date: 2023-10-18
Publication date: 2024-07-09
Anticipated expiration: 2033-10-18

Abstract

The application provides an integrated spindle motor, which relates to the technical field of spindle motors and comprises a front end cover part, a rotor part, a stator part and a rear end cover. The front end cover part comprises a cylindrical mounting cylinder, one side of the circumferential surface of the mounting cylinder is provided with a mounting plate parallel to the axis, the bottom of the mounting plate is provided with a sliding groove, and the sliding groove is used for fixing the front end cover part on a machine tool. The rotor portion includes a rotor spindle mounted in a mounting cylinder by a first bearing. The stator part is sleeved at the middle part of the rotor main shaft and is used for being matched with the rotor part. The rear end cover is connected with the tail part of the rotor main shaft through the second bearing and is connected with the mounting cylinder through a bolt, and the bolt penetrates through the stator part. According to the application, through the integrated design, the intermediate connecting piece is reduced when the spindle motor is installed, so that the installation precision can be improved, and the integral precision and rigidity of the machine tool can be improved.

Description

Integrated spindle motor

Technical Field

The utility model relates to the technical field of spindle motors, in particular to an integrated spindle motor.

Background

Existing motors typically have a cylindrical housing and are mounted to the machine by intermediate coupling parts. Some machine tools need to ensure high-precision operation during operation, so that the dimensional precision required by the motor in the assembly process is also high. The more intermediate connecting parts involved in the assembly process of the general motor, the greater the assembly difficulty of the motor, the less easy the coaxiality of the motor is ensured, and the inaccurate positioning is caused. The problem of inaccurate positioning of the existing motor in assembly can make the precision and rigidity of the whole machine tool difficult to ensure. And economic losses are also caused by wear and ageing phenomena between the intermediate coupling parts, which can lead to malfunctions of the motor or of the machine tool.

Disclosure of utility model

In order to solve the technical problems in the background technology, the utility model aims to provide an integrated spindle motor, reduce intermediate connection parts and improve the precision of the spindle motor during installation, thereby improving the precision and rigidity of the whole machine tool.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

an integrated spindle motor includes a front end cover portion, a rotor portion, a stator portion, and a rear end cover.

The front end cover part comprises a cylindrical mounting cylinder, one side of the circumferential surface of the mounting cylinder is provided with a mounting plate parallel to the axis, the bottom of the mounting plate is provided with a sliding groove, and the sliding groove is used for fixing the front end cover part on a machine tool.

The rotor portion includes a rotor spindle mounted in a mounting cylinder by a first bearing.

The stator part is sleeved at the middle part of the rotor main shaft and is used for being matched with the rotor part.

The rear end cover is connected with the tail part of the rotor main shaft through the second bearing and is connected with the mounting cylinder through a bolt, and the bolt penetrates through the stator part.

The beneficial effects of the utility model are as follows: the rotor spindle is arranged on the mounting cylinder of the front end cover part, and one side of the mounting cylinder is provided with the mounting plate, so that the integrated spindle motor can be directly connected with a machine tool through the sliding groove on the mounting plate. The problems of difficult assembly and noise generated by equipment in operation caused by excessive intermediate joint parts in the installation process are reduced, and the problems of equipment failure caused by abrasion and aging of the intermediate joint parts are avoided. Thus ensuring the precision and rigidity of the whole machine tool.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an embodiment of the present utility model;

FIG. 3 is a schematic view of the front end cover portion of an embodiment of the present utility model;

Fig. 4 is a schematic structural view of a bearing cover plate according to an embodiment of the utility model.

Wherein, 1: a front end cap portion; 2: a stator portion; 3: a rear end cover; 4: a rotor spindle; 5: a bolt; 6: a mounting hole; 7: a top thread hole; 8: a bearing cover plate; 9: a permanent magnet; 11: a mounting cylinder; 12: a mounting plate; 13: a chute; 14: a base; 15: a threaded hole; 16: a through hole; 21: a stator sleeve; 22: a stator winding; 81: and the bearing cover plate is provided with an inner concave part.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the embodiments of the present utility model, all directional indicators (such as up, down, left, right, front, and rear … …) are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), if the specific posture is changed, the directional indicators correspondingly change, and the connection may be a direct connection or an indirect connection.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Fig. 1 to 2 show a schematic structural diagram of an integrated spindle motor according to an embodiment of the present utility model, and fig. 2 is a cross-sectional view of the embodiment, wherein the cross-section is a symmetry plane of the integrated spindle motor. The integrated spindle motor provided in this embodiment includes a front end cover portion 1, a rotor portion, a stator portion 2, and a rear end cover 3.

Fig. 3 is a schematic structural view of the front end cover portion of the present embodiment. The front end cover part 1 comprises a cylindrical mounting cylinder 11, a mounting plate 12 parallel to the axis is arranged on one side of the circumferential surface of the mounting cylinder 11, a sliding groove 13 is arranged at the bottom of the mounting plate 12, and the sliding groove 13 is used for fixing the front end cover part 1 on a machine tool.

Wherein the front end cap portion 1 is integrally formed, so that the accuracy of the relative position between the mounting cylinder 11 and the mounting plate 12 can be ensured. The slide groove 13 of the mounting plate 12 can be integrally mounted on a machine tool to which a spindle motor is to be mounted by the bolt 5, and is typically mounted on a slide of the machine tool so as to be capable of rectilinear movement on the machine tool. The chute 13 is provided with a threaded hole 15, and the chute can be directly fixed on a machine tool through the threaded hole 15 during installation. The integrated spindle motor provided in this embodiment can be mounted on various machine tools requiring linear motion of the spindle motor, such as a key machine. The bottom of the mounting plate 12 is also provided with wire outlets for receiving wires. The mounting cylinder 11 is smoothly connected with the mounting plate 12.

The rotor part comprises a rotor spindle 4, the rotor spindle 4 being mounted in a mounting cylinder 11 by means of a first bearing.

The middle part of the rotor main shaft 4 is provided with a shaft shoulder, the inner ring of the first bearing is sleeved on the rotor main shaft 4, and the outer ring is sleeved in the mounting cylinder 11. The rotor spindle 4 is directly arranged in the installation cylinder 11, the installation cylinder 11 is used as a machine seat of a machine tool, the rotor spindle 4 is used as a spindle of the machine tool, the integration of the motor and the spindle of the machine tool is realized, and the installation of the spindle motor on the machine tool does not need an intermediate connecting piece, so that the installation precision of the spindle motor on the machine tool is improved. Other parts of the rotor part may be fitted around the middle of the rotor spindle 4 and fixed. The rotor part also comprises a plurality of strip-shaped permanent magnets 9, and the permanent magnets 9 are uniformly fixed in the middle of the rotor main shaft 4.

The stator part 2 is sleeved in the middle of the rotor main shaft 4 and is used for being matched with the rotor part.

The stator part 2 comprises a stator sleeve 21, wherein the stator sleeve 21 is used for fixing other stator components, and is sleeved in the middle of a rotor shaft through the stator sleeve 21, so that a certain gap is kept between the stator sleeve and the rotor. The stator part and the rotor part can cooperate with each other in the axial direction along the rotor spindle 4.

The rear end cap 3 is connected to the rear part of the rotor spindle 4 via a second bearing and to the mounting cylinder 11 via bolts 5, the bolts 5 passing through the stator part 2.

Wherein, rear end cap 3 can fix rotor part and stator part 2, and bolt 5 length that is used for connecting needs can pass stator part 2 and be connected with installation section of thick bamboo 11, is provided with corresponding bolt hole on the installation section of thick bamboo 11. Preferably, the bolts 5 pass through the stator sleeve 21 of the stator part 2. The second bearing between the rear end cap 3 and the rotor spindle 4 may be any kind of rolling bearing.

The integrated spindle motor provided in this embodiment is configured such that the rotor spindle 4 is used as a machine tool spindle, and the mounting tube 11 of the front end cover portion 1 is used as a spindle base, thereby integrating the motor and the machine tool spindle. The rotor spindle 4 is mounted on the mounting cylinder 11 of the front cover part 1, and the mounting plate 12 is provided on one side of the mounting cylinder 11, so that the integrated spindle motor can be directly connected to the machine tool through the slide groove 13 on the mounting plate 12. The problems of difficult assembly and noise generated by equipment in operation caused by excessive intermediate joint parts in the installation process are reduced, and the problems of equipment failure caused by abrasion and aging of the intermediate joint parts are avoided. Thus ensuring the precision and rigidity of the whole machine tool.

In the embodiment, the front end of the rotor main shaft 4 is provided with a mounting hole 6, the side surface of the mounting hole 6 is provided with a jackscrew hole 7, and jackscrews are arranged in the jackscrew hole 7; the jackscrews are used to secure the cutters in the mounting holes 6.

In the prior art, the spindle usually performs fixed assembly on the tool through intermediate connectors such as a tool chuck, so that assembly errors exist. And during the operation of the equipment, the problems of abrasion, aging and the like of the intermediate connecting piece can also cause machine tool faults. In this embodiment, the front end of the rotor spindle 4 is directly provided with a mounting hole 6 coaxial with the rotor spindle 4, and the mounting hole 6 is positioned on the circumferential surface and fixed by a jackscrew. When the integrated spindle motor provided by the embodiment works, the rotor spindle 4 can directly drive the cutter to work, and an intermediate connecting piece is not needed, so that the assembly precision of the cutter can be improved. The cutter mounting mode provided by the embodiment can reduce energy loss caused by coupling transmission, and is simple and quick to operate and low in cost.

In this embodiment, the mounting plate 12 is further provided with a base 14, and the base 14 is used for being connected to a linear driving mechanism, and the linear driving mechanism is used for driving the front end cover part 1 to perform linear motion.

The linear driving mechanism may be any mechanism capable of driving the motor to perform linear motion, such as an electric push rod mechanism and a screw rod mechanism. The base 14 is provided with a through hole 16, the movable end of the linear driving mechanism can be fixedly connected with the through hole 16 on the base 14 through a fastener, the front end cover part 1 is driven to do linear motion, and the spindle motor is driven to do linear motion through the front end cover part 1.

In this embodiment, the direction of movement of the linear drive mechanism is parallel to the axis of the rotor spindle 4.

Wherein, the motion direction of the linear driving mechanism is parallel to the axis of the rotor spindle 4, which is convenient for the linear driving mechanism to control the spindle motor to move along the axis thereof, thereby facilitating the feed of the motor. This embodiment can be realized by making the axis of the through hole 16 parallel to the axis of the rotor spindle 4.

In this embodiment, the direction of the chute 13 is parallel to the axis of the rotor spindle 4.

The direction of the sliding groove 13 is the extending direction of the sliding groove 13, that is, the sliding direction, and the direction of the sliding groove 13 is parallel to the axis of the rotor spindle 4, so that the stability of the integrated spindle motor in the moving process can be further improved, and the positioning precision can be improved.

As shown in fig. 4, a schematic structural view of the bearing cover plate is shown. In this embodiment, the front end cover part 1 further comprises a bearing cover plate 8, and the bearing cover plate 8 is fixed at the front end of the mounting cylinder 11 for pressing the outer ring of the first bearing.

Among these, the present embodiment preferably mounts the rotor main shaft 4 using a pair of angular contact bearings, and fixes the outer ring of the angular contact bearings using the bearing cover plate 8. Preferably, the front end cap portion may also be provided with a cover plate for protecting the bearing from debris falling into the bearing during processing.

In this embodiment, the front end cap part 1 further comprises a tightening nut, which is arranged around the rotor spindle 4 for compressing the inner ring of the first bearing.

In this embodiment, the bearing cover 8 is a three-lobed design, and is fixed to the front end of the mounting cylinder 11 by three screws, and the diameter of the inner recess 81 of the bearing cover 8 is smaller than the diameter of the outer ring of the first bearing.

As shown in fig. 4, the bearing cover 8 is a three-petal type, and has three convex petal-shaped portions, and an inner recess 81 of the bearing cover 8 is arranged between the two petal-shaped portions. The shape of the bearing cover plate 8 in this embodiment can play a better supporting role on the outer ring of the first bearing, and can reduce the coverage of the first bearing, so that the first bearing can dissipate heat better.

In this embodiment, the stator part 2 includes a stator sleeve 21, and both ends of the stator sleeve 21 are provided with shoulders for being respectively clamped in the mounting cylinder 11 and the rear end cover 3.

The stator part 2 also comprises stator laminations, insulating supports, coil windings and the like. The stator sleeve 21 is cylindrical for mounting the components of the stator portion 2, and the stator sleeve 21 can protect the components provided therein, as well as the rotor spindle 4. The shoulders at the two ends of the stator sleeve 21 can be used for positioning, so that the installation accuracy of the spindle motor is improved.

In this embodiment, the mounting plate 12 is integrally formed with the mounting cylinder 11, and one end of the mounting plate 12 is flush with the bottom surface of the rear cover 3.

Wherein, mounting panel 12 and mounting tube 11 integrated into one piece can guarantee rotor spindle 4's installation accuracy. One end of the mounting plate 12 is flush with the bottom surface of the rear end cover 3, and can protect the main body of the spindle motor. The bottom surface of the rear end cover 3 is the bottom surface of the end cover. Preferably, mounting plate 12 extends a concave protective surface toward the main body of the spindle motor to further protect the main body of the spindle motor and enhance mounting stability. The integrated shell is simple in assembly structure, attractive in appearance and good in connection rigidity, and vibration caused by equipment in operation is reduced.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the utility model.

Claims

1. An integrated spindle motor is characterized by comprising a front end cover part (1), a rotor part, a stator part (2) and a rear end cover (3);

The front end cover part (1) comprises a cylindrical mounting cylinder (11), one side of the circumferential surface of the mounting cylinder (11) is provided with a mounting plate (12) parallel to the axis, the bottom of the mounting plate (12) is provided with a sliding groove (13), and the sliding groove (13) is used for fixing the front end cover part (1) on a machine tool;

The rotor part comprises a rotor spindle (4), the rotor spindle (4) being mounted in the mounting cylinder (11) by means of a first bearing;

The stator part (2) is sleeved in the middle of the rotor main shaft (4) and is used for being matched with the rotor part;

The rear end cover (3) is connected with the tail part of the rotor main shaft (4) through a second bearing and is connected with the mounting cylinder (11) through a bolt (5), and the bolt (5) penetrates through the stator part (2).

2. The integrated spindle motor according to claim 1, wherein a mounting hole (6) is formed in the front end of the rotor spindle (4), a jackscrew hole (7) is formed in the side surface of the mounting hole (6), and jackscrews are arranged in the jackscrew hole (7); the jackscrew is used for fixing the cutter in the mounting hole (6).

3. The integrated spindle motor according to claim 1, wherein a base (14) is further provided on the mounting plate (12), the base (14) being adapted to be connected to a linear driving mechanism for driving the front end cap portion (1) in a linear motion.

4. A unitary spindle motor according to claim 3, wherein the direction of movement of the linear drive mechanism is parallel to the axis of the rotor spindle (4).

5. An integrated spindle motor according to claim 1, characterized in that the direction of the chute (13) is parallel to the axis of the rotor spindle (4).

6. The integrated spindle motor according to claim 1, wherein the front end cover portion (1) further includes a bearing cover plate (8), the bearing cover plate (8) being fixed to a front end of the mounting cylinder (11) for pressing an outer race of the first bearing.

7. The integrated spindle motor according to claim 6, characterized in that the front end cover part (1) further comprises a tightening nut, which is fitted over the rotor spindle (4) for pressing against the inner ring of the first bearing.

8. The integrated spindle motor according to claim 6, wherein the bearing cover plate (8) is of a three-lobed design and is fixed to the front end of the mounting cylinder (11) by three screws, and the diameter of the recess (81) of the bearing cover plate (8) is smaller than the diameter of the outer ring of the first bearing.

9. The integrated spindle motor according to claim 1, characterized in that the stator part (2) comprises a stator sleeve (21), both ends of the stator sleeve (21) being provided with shoulders for being clamped in the mounting cylinder (11) and the rear end cap (3), respectively.

10. The integrated spindle motor according to claim 1, wherein the mounting plate (12) is integrally formed with the mounting cylinder (11), and one end of the mounting plate (12) is flush with the bottom surface of the rear cover (3).