CN219052934U

CN219052934U - Machine tool motor spindle with stable operation bearing structure

Info

Publication number: CN219052934U
Application number: CN202221388769.1U
Authority: CN
Inventors: 叶茂丰
Original assignee: Quanzhou Shengyu Machinery Equipment Co ltd
Current assignee: Quanzhou Shengyu Machinery Equipment Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2023-05-23
Anticipated expiration: 2032-06-06

Abstract

The utility model relates to a machine tool motor spindle with a stable running bearing structure, which comprises a shell and a spindle rotatably arranged in the shell, wherein one end of the spindle extends out of the shell, the front end and the rear end of the spindle are rotatably arranged in the shell through a front bearing structure and a rear bearing structure respectively, the rear bearing structure comprises a bearing seat arranged in the shell and a bearing arranged in the bearing seat, a pushing device matched with the bearing is arranged in the bearing seat, the pushing device comprises a mounting ring fixed in the bearing seat, one side of the mounting ring is provided with a plurality of limiting pieces and a plurality of thrust springs, the thrust springs are abutted against the front end face of an outer ring of the bearing, the spindle is in interference fit with the inner ring of the bearing, and the distance of the limiting pieces extending towards the bearing direction is shorter than the distance of the thrust springs extending towards the bearing direction in a free state. The bearing structure of the machine tool motor spindle with the stable operation bearing structure is stable in operation, and the situation that the bearing cannot operate due to movement of the spindle can be prevented.

Description

Machine tool motor spindle with stable operation bearing structure

Technical Field

The utility model relates to the technical field of machine tool motor spindles, in particular to a machine tool motor spindle with a stable running bearing structure.

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 machine tools, and comprises the electric spindle and accessories thereof together with a linear motor technology and a high-speed cutter technology, 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, a spindle core of the electric spindle is rotatably arranged in the shell through a bearing, the bearing bears axial load, the bearing needs to work normally, the bearing needs to be pushed forcefully, the bearing can work normally, the axial movement of a spindle of the existing electric spindle can occur, the bearing receives insufficient force, the bearing and the spindle cannot work normally, and the spindle and the bearing are damaged.

Disclosure of Invention

In order to overcome the technical defects in the prior art, the utility model provides a machine tool motor spindle with a stable running bearing structure, which is stable in running and capable of preventing the situation that a bearing cannot run due to the movement of a spindle.

The technical scheme adopted by the utility model is as follows: the utility model provides a lathe motor spindle with steady operation bearing structure, includes the casing, rotatable dabber of installing in the casing, the casing is extended to the one end of dabber, the front and back both ends of dabber are respectively through preceding bearing structure and back bearing structure rotatable installation in the casing, back bearing structure is including installing the bearing frame in the casing and installing the bearing in the bearing frame, be equipped with in the bearing frame with bearing complex thrustor, thrustor is including fixing the collar in the bearing frame, a plurality of locating parts and a plurality of thrust spring are installed to collar one side, a plurality of thrust spring butt is on the bearing outer lane front end face, the dabber with the inner circle interference fit of bearing, the distance that thrust spring extends to the bearing direction is shorter than the distance that the thrust spring extends to the bearing direction under the free state.

Preferably, a plurality of blind holes and a plurality of thread through holes are formed in one side, facing the bearing, of the mounting ring, a thrust spring is arranged in each blind hole, a limiting piece is arranged in each thread through hole, and the limiting piece is matched with the thread through hole through a thread pair.

Preferably, the number of the limiting members is less than the number of the thrust springs.

Preferably, the number of the limiting pieces is four, and the four limiting pieces are uniformly distributed on one side of the mounting ring around the axis of the mounting ring.

Preferably, the bearings of the front bearing arrangement and the bearings of the rear bearing arrangement are arranged opposite each other.

Preferably, the bearing adopts an angular contact ball bearing.

The utility model has the beneficial effects that: the bearing of the rear bearing structure of the machine tool motor spindle with the stable operation bearing structure is tightly propped by the pushing device, the pushing device comprises the mounting ring fixed in the bearing seat, one side of the mounting ring is provided with the plurality of limiting pieces and the plurality of thrust springs, the thrust springs are propped against the bearing to ensure the normal operation of the bearing, when the spindle moves, the outer ring of the bearing always bears enough thrust under the thrust force of the thrust springs, so that the bearing always can stably work after the spindle moves, the moving range of the outer ring of the bearing can be adjusted by adjusting the extending length of the limiting pieces, and when the thrust springs are compressed by the outer ring of the bearing, the outer ring of the bearing can not be blocked by the limiting pieces to continue moving.

Drawings

Fig. 1 is a schematic structural view of a spindle of a machine tool motor having a steady operation bearing structure according to the present utility model.

Fig. 2 is a cross-sectional view of the rear bearing structure of the present utility model.

FIG. 3 is a schematic view of the mounting ring of the present utility model.

Reference numerals illustrate: 1. a housing; 2. a mandrel; 3. a bearing seat; 4. a bearing; 5. a mounting ring; 501. a threaded through hole; 502. a blind hole; 6. a thrust spring; 7. and a limiting piece.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 3, the present embodiment provides a spindle of a machine tool motor with a bearing structure for stable operation, which includes a housing 1, a spindle 2 rotatably mounted in the housing 1, one end of the spindle 2 extends out of the housing 1, front and rear ends through which the spindle 2 passes are rotatably mounted in the housing 1 as a result of passing through a front bearing structure and a rear bearing structure, the rear bearing structure includes a bearing seat 3 mounted in the housing 1 and a bearing 4 mounted in the bearing seat 3, the bearing seat 3 is provided with a pushing device matched with the bearing 4, the pushing device includes a mounting ring 5 fixed in the bearing seat 3, one side of the mounting ring 5 is provided with a plurality of limiting members 7 and a plurality of thrust springs 6, the plurality of thrust springs 6 are abutted against the front end face of an outer ring of the bearing 4, the spindle 2 is in interference fit with the inner ring of the bearing 4, and the distance that the limiting members 7 extend in the direction of the bearing 4 is shorter than that the thrust springs 6 extend in the direction of the bearing 4 in the free state.

In this embodiment, a plurality of blind holes 502 and a plurality of screw thread through-holes 501 have been seted up to one side of collar 5 towards bearing 4, every all be equipped with a thrust spring 6 in the blind hole 502, every all be equipped with a locating part 7 in the screw thread through-hole 501, locating part 7 cooperates with screw thread through-hole 501 through the screw thread pair, and the removal of locating part 7 restriction dabber 2 and bearing 4, under thrust spring 6's effect, bearing 4 receives sufficient axial force, and bearing 4 operates steadily, and when dabber 2 drunkenness, under thrust spring thrust 6's effect, the outer lane of bearing 4 bears sufficient thrust all the time for bearing 4 can stable work all the time when dabber 2 drunkenness, and locating part 7 limits the removal of bearing 4 outer lane, and when bearing 4 outer lane compression thrust spring 6, can receive the stop of locating part 7 can not continue the motion, adjusts the movable scope of bearing 4 outer lane through adjusting the length of locating part 7 to the extension of bearing 4 direction. Preferably, the number of the limiting pieces 7 is smaller than that of the thrust springs 6, four limiting pieces 7 are arranged on one side of the mounting ring 5 uniformly around the axis of the mounting ring 5.

The bearing 4 of the machine tool motor main shaft with the stable operation bearing structure of this embodiment is tightly propped up by the thrustor, and the outer lane of bearing 4 is slidable in bearing frame 3, and under thrust spring 6's effect, the inner circle and the outer lane of bearing 4 stagger each other, and bearing 4 normal operating, the existence of thrust spring 6 of thrustor guarantees bearing 4 normal operating, and preferably, the bearing in the front bearing structure and the bearing 4 in the rear bearing structure of this embodiment all adopt angular contact ball bearing, bearing in the front bearing structure and bearing 4 in the rear bearing structure set up in opposite directions, and this mounting means is the common mounting means in this field, and specific structure is not repeated.

While the basic principles and main features of the utility model and advantages of the utility model have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described in the foregoing description merely illustrate the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.

Claims

1. Machine tool motor main shaft with steady operation bearing structure, its characterized in that: including casing, rotatable dabber of installing in the casing, the casing is extended to the one end of dabber, both ends are rotatable through preceding bearing structure and back bearing structure respectively in the casing around the dabber, back bearing structure is including installing the bearing frame in the casing and installing the bearing in the bearing frame, be equipped with in the bearing frame with bearing complex thrustor, thrustor is including fixing the collar in the bearing frame, a plurality of locating parts and a plurality of thrust spring are installed to collar one side, a plurality of thrust spring butt is on the bearing outer lane preceding terminal surface, the dabber with the inner circle interference fit of bearing, the distance that thrust spring extends to the bearing direction under the distance that the locating part extends to the bearing direction is shorter than under the free state.

2. A machine tool motor spindle with a steady operation bearing structure as claimed in claim 1, wherein: a plurality of blind holes and a plurality of thread through holes are formed in one side, facing the bearing, of the mounting ring, a thrust spring is arranged in each blind hole, a limiting piece is arranged in each thread through hole, and the limiting piece is matched with the thread through hole through a thread pair.

3. A machine tool motor spindle with a steady operation bearing structure as claimed in claim 1, wherein: the number of the limiting pieces is smaller than that of the thrust springs.

4. A machine tool motor spindle with a steady operation bearing structure as claimed in claim 1, wherein: the limiting pieces are four, and the four limiting pieces are uniformly distributed on one side of the mounting ring around the axis of the mounting ring.

5. A machine tool motor spindle with a steady operation bearing structure as claimed in claim 1, wherein: the bearing of the front bearing structure and the bearing of the rear bearing structure are arranged in a back-to-back manner.

6. A machine tool motor spindle with a steady operation bearing structure as claimed in claim 1, wherein: the bearing adopts an angular contact ball bearing.