CN115533137A

CN115533137A - Machine tool spindle with locking device

Info

Publication number: CN115533137A
Application number: CN202110734514.XA
Authority: CN
Inventors: 刘伟
Original assignee: Yangzhou Jiuying Precision Spindle Co ltd
Current assignee: Yangzhou Jiuying Precision Spindle Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-12-30

Abstract

The invention discloses a machine tool spindle with a locking device in the technical field of machine tool spindles, which comprises a machine tool spindle, a bearing outer ring and a bearing inner ring, wherein the machine tool spindle is arranged at the inner side of the bearing inner ring, the bearing outer ring is arranged at the outer side of the bearing inner ring, a retainer is arranged between the bearing outer ring and the bearing inner ring, rolling bodies are equidistantly arranged on the retainer, the right end of the bearing inner ring extends out of the right end of the bearing outer ring, a cavity is symmetrically formed in one side, close to the machine tool spindle, of the right end of the bearing inner ring, a locking rod is arranged in the cavity, a spring is sleeved on the outer wall of the locking rod, a limiting block fixedly sleeved on the outer wall of the locking rod is arranged at one end, close to the machine tool spindle, of the spring penetrates through the outer wall surface of the bearing inner ring, a pull rod is fixedly connected with one end of the locking rod, the other end of the locking rod penetrates through the inner wall surface of the bearing inner ring, and a locking hole matched with the locking rod is formed in the machine tool spindle.

Description

Machine tool spindle with locking device

Technical Field

The invention relates to the technical field of machine tool spindles, in particular to a machine tool spindle with a locking device.

Background

The main shaft of the machine tool refers to a shaft on the machine tool for driving a workpiece or a cutter to rotate. The main shaft component is generally composed of a main shaft, a bearing, a transmission member (gear or pulley), and the like. The machine is mainly used for supporting transmission parts such as gears and belt wheels and transmitting motion and torque, such as a machine tool main shaft; some are used to clamp a workpiece, such as a mandrel. Most of machine tools have a spindle unit except for a planer, a broaching machine, and the like, which are linearly moved in main motion. The movement accuracy and structural rigidity of the spindle unit are important factors determining the machining quality and the cutting efficiency. The locking mechanism on the existing machine tool spindle is complex in structure, inconvenient to use, fast in abrasion and short in service life, and therefore a machine tool spindle with a locking device is provided.

Disclosure of Invention

The present invention aims to provide a machine tool spindle with a locking device to solve the problems set forth in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: lathe main shaft with locking device, including lathe main shaft, bearing inner race and bearing inner race, the lathe main shaft sets up the inboard of bearing inner race, the bearing inner race sets up the outside of bearing inner race, the bearing inner race with install the holder between the bearing inner race, the equidistance is provided with the rolling element on the holder, the right-hand member of bearing inner race extends the right-hand member of bearing inner race, the right-hand member of bearing inner race is close to one side symmetry of lathe main shaft has seted up the cavity, be provided with the check lever in the cavity, the outer wall cover of check lever is equipped with the spring, the spring is close to the one end of lathe main shaft is provided with fixed the establishing the stopper of check lever outer wall, the one end of check lever runs through the outer wall surface and the fixedly connected with pull rod of bearing inner race, the other end of the check lever of telling runs through the internal face of bearing inner race, seted up on the lathe main shaft with check lever assorted locking hole.

Preferably, the outer wall of the bearing outer ring is provided with an oil filling hole communicated with the retainer, and the inner wall of the oil filling hole is inserted with an oil filling plug.

Preferably, sealing rings are arranged between the left and right edges of the bearing outer ring and the bearing inner ring.

Preferably, the outer wall of the machine tool spindle is provided with an external spline, and the inner wall of the bearing inner ring is provided with an internal spline matched with the external spline.

Preferably, the outer walls of the machine tool spindle, the bearing outer ring and the bearing inner ring are all provided with corrosion-resistant coatings.

Preferably, the bearing outer ring and the bearing inner ring are provided with raceways matched with the rolling bodies on opposite sides.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the pull rod is pulled outwards to drive one end of the locking rod, which is far away from the pull rod, to be retracted into the cavity, meanwhile, the spring is compressed, the machine tool spindle is inserted into the bearing inner ring, so that the locking hole on the machine tool spindle is aligned with the locking rod, the pull rod is loosened, and the locking rod is inserted into the locking hole under the elastic force of the spring, so that the locking operation of the machine tool spindle can be realized, the structure is simple, the use is convenient, the abrasion is slow, and the service life is long.

2. The invention is provided with the oil filling hole and the oil filling plug, lubricating oil can be filled into the retainer through the oil filling hole by pulling the oil filling plug out of the oil filling hole, and the oil filling plug is inserted back into the oil filling hole after the filling is finished.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the inner structure of the bearing inner race of the present invention.

In the figure: 1. a machine tool spindle; 2. a bearing outer race; 3. a bearing inner race; 4. a holder; 5. a rolling body; 6. a locking lever; 7. a limiting block; 8. a spring; 9. a locking hole; 10. a pull rod; 11. an oil filler hole; 12. an oil filling plug; 13. a seal ring; 14. an external tooth spline; 15. an internal spline.

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.

Example 1:

referring to fig. 1, the present invention provides a technical solution: the machine tool spindle with the locking device comprises a machine tool spindle 1, a bearing outer ring 2 and a bearing inner ring 3, wherein the machine tool spindle 1 is arranged on the inner side of the bearing inner ring 3, the bearing outer ring 2 is arranged on the outer side of the bearing inner ring 3, a retainer 4 is arranged between the bearing outer ring 2 and the bearing inner ring 3, rolling bodies 5 are equidistantly arranged on the retainer 4 and used for bearing load, raceways matched with the rolling bodies 5 are arranged on the opposite sides of the bearing outer ring 2 and the bearing inner ring 3, the bearing outer ring 2 is fixed on a bearing seat and plays a role in supporting the rolling bodies 5, and the rolling bodies 5 are separated through the retainer 4, so that the rolling bodies 5 normally roll and operate between the raceways.

In this embodiment, please refer to fig. 1 and fig. 2, the right end of the bearing inner ring 3 extends out of the right end of the bearing outer ring 2, a cavity is symmetrically formed in one side, close to the machine tool spindle 1, of the right end of the bearing inner ring 3, a locking rod 6 is arranged in the cavity, a spring 8 is sleeved on the outer wall of the locking rod 6, a limiting block 7 fixedly sleeved on the outer wall of the locking rod 6 is arranged at one end, close to the machine tool spindle 1, of the spring 8, and plays a role of limiting, one end of the locking rod 6 penetrates through the outer wall surface of the bearing inner ring 3 and is fixedly connected with a pull rod 10, the other end of the locking rod 6 penetrates through the inner wall surface of the bearing inner ring 3, a locking hole 9 matched with the locking rod 6 is formed in the machine tool spindle 1, by pulling the pull rod 10 outwards, one end, far away from the pull rod 10, of the locking rod 6 is driven to be retracted into the cavity, the spring 8 is compressed, the machine tool spindle 1 is inserted into the bearing inner ring 3, so that the locking hole 9 on the machine tool spindle 1 is aligned with the locking rod 6, the pull rod 10 is loosened, and the locking rod 6 is inserted into the locking hole 9 under the elasticity of the spring 8, thereby realizing the locking operation of the machine tool spindle 1, which is simple in structure, and is convenient to be worn, and has a long service life.

In the embodiment, referring to fig. 1, an oil filler hole 11 communicated with the retainer 4 is formed in the outer wall of the bearing outer ring 2, an oil filler plug 12 is inserted into the inner wall of the oil filler hole 11, the oil filler plug 12 is pulled out of the oil filler hole 11, lubricating oil can be filled into the retainer 4 through the oil filler hole 11, and after the oil filling is completed, the oil filler plug 12 is inserted back into the oil filler hole 11 again, so that the use is convenient, the friction force generated when the rolling element 5 rolls is reduced, the abrasion is slowed down, and the service life is prolonged.

In this embodiment, referring to fig. 1, a seal ring 13 is disposed between the left and right side edges of the bearing outer ring 2 and the bearing inner ring 3, so as to perform an oil seal function and prevent the lubricant from leaking out.

In this embodiment, referring to fig. 1, the outer walls of the machine tool spindle 1, the bearing outer ring 2 and the bearing inner ring 3 are all provided with corrosion-resistant coatings, so that the corrosion is avoided, and the service life is further prolonged.

Example 2:

referring to fig. 1 and 3, this embodiment is different from the first embodiment in that: the outer wall of lathe main shaft 1 is provided with external splines 14, and the inner wall of bearing inner race 3 is provided with external splines 14 assorted internal splines 15, through external splines 14 and internal splines 15's cooperation, conveniently installs lathe main shaft 1 in the inboard of bearing inner race 3 for lathe main shaft 1 can rotate together with bearing inner race 3, makes lathe main shaft 1 can bear great load simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Lathe main shaft with locking device, including lathe main shaft (1), bearing inner race (2) and bearing inner race (3), its characterized in that: lathe main shaft (1) sets up the inboard of bearing inner race (3), bearing inner race (2) set up the outside of bearing inner race (3), bearing outer race (2) with install holder (4) between bearing inner race (3), equidistant rolling element (5) that is provided with in holder (4), the right-hand member of bearing inner race (3) extends the right-hand member of bearing outer race (2), the right-hand member of bearing inner race (3) is close to the cavity has been seted up to one side symmetry of lathe main shaft (1), be provided with check lock lever (6) in the cavity, the outer wall cover of check lock lever (6) is equipped with spring (8), spring (8) are close to the one end of lathe main shaft (1) is provided with fixed cover and establishes stopper (7) of check lock lever (6) outer wall, the one end of check lock lever (6) runs through the outer wall face and fixedly connected with pull rod (10) of bearing inner race (3), the other end of check lock lever (6) of telling runs through the internal face of bearing inner race (3), seted up on lathe main shaft (1) with check lock lever (6) assorted check lock hole (9).

2. The spindle with locking device for machine tool according to claim 1, characterized in that: an oil filling hole (11) communicated with the retainer (4) is formed in the outer wall of the bearing outer ring (2), and an oil filling plug (12) is inserted into the inner wall of the oil filling hole (11).

3. The spindle with locking device for machine tool according to claim 1, characterized in that: and sealing rings (13) are arranged between the edges of the left side and the right side of the bearing outer ring (2) and the bearing inner ring (3).

4. The spindle with locking device for machine tool according to claim 1, characterized in that: the outer wall of lathe main shaft (1) is provided with external tooth spline (14), the inner wall of bearing inner race (3) be provided with external tooth spline (14) assorted internal tooth spline (15).

5. The spindle with locking device for machine tool according to claim 1, characterized in that: and the outer walls of the machine tool spindle (1), the bearing outer ring (2) and the bearing inner ring (3) are all provided with corrosion-resistant coatings.

6. The spindle with locking device for machine tool according to claim 1, characterized in that: and the opposite side of the bearing outer ring (2) and the bearing inner ring (3) is provided with a roller path matched with the rolling body (5).