CN218225680U

CN218225680U - Main shaft

Info

Publication number: CN218225680U
Application number: CN202222626944.2U
Authority: CN
Inventors: 胡传福
Original assignee: Dongwei Ningbo Intelligent Equipment Co ltd
Current assignee: Dongwei Ningbo Intelligent Equipment Co ltd
Priority date: 2022-10-03
Filing date: 2022-10-03
Publication date: 2023-01-06
Anticipated expiration: 2032-10-03

Abstract

The utility model relates to a main shaft, which comprises a bearing, a motor stator and a motor rotor, wherein the motor stator is arranged in a shaft sleeve; the shaft center is rotatably arranged on the shaft sleeve through a bearing, the motor rotor is arranged on the shaft center, a shaft hole is formed in the shaft center, and a main shaft taper hole is formed in one end of the shaft hole; the chuck is movably inserted into the shaft hole and is provided with a conical head matched with the conical hole of the main shaft; one end of the pull rod is connected with the chuck, and the pull rod is movably inserted on the shaft hole; the tensioning device is arranged on the shaft center, is connected with the pull rod and is used for tensioning the chuck to clamp the workpiece; the material loosening cylinder is arranged on the shaft sleeve, is opposite to the other end of the pull rod and is used for pushing the pull rod to loosen the workpiece; discharging device includes discharge bar and ejection of compact cylinder, and the discharge bar activity is inserted in the inside of pull rod, and the activity is inserted in the pine material piston rod of pine material cylinder, and ejection of compact cylinder installs on the pine material piston rod, and is connected with the discharge bar. The spindle workpiece is high in clamping speed and high in clamping efficiency, and can automatically eject the workpiece.

Description

Main shaft

Technical Field

The utility model relates to a lathe part, especially a main shaft.

Background

The magnetic material needs to be drilled, when the existing machine tool spindle clamps a workpiece, the spindle is driven to move through the lever mechanism, so that the clamping of the magnetic material is realized, the structure is complex, the clamping speed of the magnetic material is low, the processing efficiency is influenced, the magnetic material needs to be manually loaded and unloaded, and the labor intensity is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a can simple structure, clamping fast and can automatic liftout a main shaft, concrete technical scheme is:

a main shaft comprises a bearing, a motor stator and a motor rotor, and further comprises: the motor stator is arranged in the shaft sleeve; the shaft center is rotatably arranged on the shaft sleeve through the bearing, the motor rotor is arranged on the shaft center, a shaft hole is formed in the shaft center, and a spindle taper hole is formed in one end of the shaft hole; the chuck is movably inserted into the shaft hole, and a conical head matched with the conical hole of the spindle is arranged on the chuck; one end of the pull rod is connected with the chuck, and the pull rod is movably inserted into the shaft hole; the tensioning device is arranged on the shaft center, is connected with the pull rod and is used for tensioning the chuck to clamp a workpiece; the material loosening cylinder is mounted on the shaft sleeve, is arranged opposite to the other end of the pull rod and is used for pushing the pull rod to loosen the workpiece; and the discharging device comprises a discharging rod and a discharging cylinder, the discharging rod is movably inserted into the pull rod, and is movably inserted into a material loosening piston rod of the material loosening cylinder, and the discharging cylinder is installed on the material loosening piston rod and is connected with the discharging rod.

Preferably, the tension device includes: the disc springs are arranged in the shaft holes, one end of each disc spring abuts against a second hole shoulder of the shaft hole, and the pull rod is movably inserted into each disc spring; the puller is installed at the other end of the pull rod and is arranged opposite to the material loosening cylinder, and the other end of the disc spring abuts against the puller.

Preferably, the method further comprises the following steps: the outer connecting rod is movably inserted in the shaft hole and is respectively connected with the pull head and the pull rod.

Further, the discharging device further comprises: the inner connecting rod is movably inserted into the outer connecting rod and is connected with one end of the discharging rod; and the discharging push rod is arranged on the inner connecting rod and movably inserted into the chuck.

Wherein, still include: and the reset spring is movably inserted on the discharging rod, and two ends of the reset spring are respectively connected with the tensioning device and the discharging rod, so that the discharging rod is in a retraction state.

Preferably, the method further comprises the following steps: the connecting column is respectively connected with the shaft sleeve and the loosening air cylinder.

Preferably, the bearing comprises a front bearing and a rear bearing, and the front bearing and the rear bearing are respectively located at two ends of the shaft sleeve.

Further, the method also comprises the following steps: the front end cover is fixed at one end of the shaft sleeve; the locking nut is arranged on the shaft center, the front bearing is positioned between the front end cover and the locking nut, and the front end cover fixes the front bearing on the shaft sleeve and the shaft center; the rear end cover is installed on the shaft center and is positioned at one end of the rear bearing, and the rear bearing is fixed on the shaft center through the rear end cover.

Preferably, the shaft sleeve is provided with a plurality of heat dissipation grooves.

Compared with the prior art the utility model discloses following beneficial effect has:

the utility model provides a pair of main shaft adopts the dish spring to realize pressing from both sides tightly of work piece, realizes loosening of work piece through the pine material cylinder, and the dish spring has guaranteed that the reliable clamp of work piece is tight, and the quick clamp that the chuck had been realized to the pine material cylinder is tight and loosen, has improved the clamping efficiency of work piece to it is ejecting to realize the automation of work piece through discharge bar and ejection of compact cylinder, has reduced intensity of labour, and conveniently realize automated processing.

Drawings

FIG. 1 is a schematic view of a spindle;

FIG. 2 is a front view of a spindle;

fig. 3 is a sectional view of a spindle.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings.

As shown in fig. 1 to fig. 3, a spindle includes a bearing, a motor stator 261, a motor rotor 262, a shaft sleeve 21, a shaft center 22, a chuck 23, a pull rod 252, a tension device, a material loosening cylinder 27, a material discharging rod 281, and a material discharging cylinder 285.

The outer circle surface of the shaft sleeve 21 is provided with a plurality of heat dissipation grooves 211, and the shaft sleeve 21 is also provided with a fixing nut. One end of the sleeve 21 is provided with a first bore shoulder 211. The bearings include a front bearing 241 and a rear bearing 242, and the front bearing 241 and the rear bearing 242 are respectively located at two ends of the shaft sleeve 21; wherein the outer ring of the front bearing 241 abuts against the first bore shoulder 211 of the sleeve 21. The front cover 292 is mounted at one end of the sleeve 21, and the front cover 292 presses the outer race of the front bearing 241 against the first bore shoulder 211.

The shaft core 22 is a stepped shaft, a shaft hole 221 is provided in the center of the shaft core 22, the shaft hole 221 is a stepped hole, and the shaft core 22 is mounted on inner rings of the front bearing 241 and the rear bearing 242. A first shoulder 223 is provided at one end of the shaft core 22, the first shoulder 223 is clamped on the inner ring of the front bearing 241, and a lock nut 243 is mounted on the shaft core 22 and located at one side of the front bearing 241 to fix the inner ring of the front bearing 241 on the shaft core 22. The other end of the axle center 22 is provided with a third shoulder 225, the inner ring of the rear bearing 242 abuts against the third shoulder 225, the other end of the axle center 22 is provided with a rear end cover 291, and the inner ring of the rear bearing 242 is pressed against the third shoulder 225 by the rear end cover 291. The outer race of the rear bearing 242 can move in the radial direction to prevent the shaft core 22 from being locked. One end of the shaft hole 221 is provided with a main shaft taper hole 222, the chuck 23 is movably inserted in the shaft hole 221, and the chuck 23 is provided with a taper head 231 matched with the main shaft taper hole 222.

The motor stator 261 is fixed in the shaft sleeve 21, and the motor rotor 262 is fixed on the shaft center 22 and arranged opposite to the motor stator 261 for driving the shaft center 22 to rotate.

The tensioning device includes a disc spring 251, a pull head 254, and an outer link 253. The disc springs 251 are provided in a plurality and are arranged in pairs. The disc spring 251 is arranged in the shaft hole 221 and is positioned at the other end of the shaft center 22, one end of the disc spring 251 is abutted against the second hole shoulder 224 of the shaft hole 221, the pull rod 252 is movably inserted on the disc spring 251, the pull rod 252 is also movably inserted in the shaft hole 221, and one end of the pull rod 252 is connected with the pull head 254 through the outer connecting rod 253; the pulling head 254 is installed at the other end of the pulling rod 252 through threads and is abutted against the other end of the disc spring 251, the pulling head 254 is further movably inserted into the shaft hole 221, and the pulling head 254 is further arranged opposite to the material loosening cylinder 27. The disc spring 251 pushes the pull rod 252 to move towards the tail of the shaft center 22 through the second hole shoulder 224 and the pull head 254, so that the chuck 23 is pulled tightly, and the chuck 23 clamps the magnetic material 91 under the action of the conical head 231 and the spindle conical hole 222. The tensioner follows the axis 22.

The material loosening cylinder 27 is connected with the other end of the shaft sleeve 21 through a connecting column 272, and a material loosening piston rod 271 of the material loosening cylinder 27 is arranged opposite to the pull head 254 and is not connected.

The discharging device comprises a discharging rod 281, a discharging air cylinder 285, an inner connecting rod 283, a discharging push rod 282 and a return spring 284. The discharging air cylinder 285 is installed on the material loosening piston rod 271, the material loosening piston rod 271 is a hollow rod, a piston rod of the discharging air cylinder 285 is connected with one end of a discharging rod 281, and the discharging rod 281 is movably inserted into the pull rod 252. The other end of the discharging rod 281 is connected with the discharging push rod 282 through an inner connecting rod 283, the inner connecting rod 283 is movably inserted into the outer connecting rod 253, and the discharging push rod 282 is movably inserted into the chuck 23. The return spring 284 is movably inserted on the discharging rod 281, and both ends of the return spring are respectively connected with the pull rod 252 and the discharging rod 281 for making the discharging rod 281 in a retracted state.

When the magnetic material 91 is loosened, the loosening piston rod of the loosening cylinder 27 extends out, the loosening piston rod is abutted against the pull head 254, the pull head 254 is pushed to move towards one end of the shaft sleeve 21, the pull head 254 compresses the disc spring 251, the clamping head 23 is pushed through the pull rod 252 to loosen the magnetic material 91, and the starting speed of the cylinder is high and the cylinder is directly contacted with the pull head 254, so that the speed of loosening the magnetic material 91 is increased.

When the magnetic material 91 is clamped, the material loosening piston rod 271 of the material loosening cylinder 27 extends, the material loosening piston rod abuts against the pull head 254 and pushes the pull head 254 to move towards one end of the shaft sleeve 21, the pull head 254 compresses the disc spring 251, the clamp head 23 is pushed by the pull rod 252 to be loosened, then the magnetic material 91 is loaded, then the material loosening piston rod 271 of the material loosening cylinder 27 retracts, and the disc spring 251 drives the clamp head 23 to clamp the magnetic material 91 through the pull head 254 and the pull rod 252.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the claims of the present invention.

Claims

1. A spindle comprising a bearing, a motor stator (261) and a motor rotor (262), characterized by further comprising:

a shaft sleeve (21), the motor stator (261) being mounted within the shaft sleeve (21);

the shaft center (22) is rotatably installed on the shaft sleeve (21) through the bearing, the motor rotor (262) is installed on the shaft center (22), a shaft hole (221) is formed in the shaft center (22), and a spindle taper hole (222) is formed in one end of the shaft hole (221);

the chuck (23), the said chuck (23) is inserted in the said shaft hole (221) movably, there is a conical head (231) matching with said main axis taper hole (222) on the said chuck (23);

one end of the pull rod (252) is connected with the clamping head (23), and the pull rod (252) is movably inserted into the shaft hole (221);

the tensioning device is arranged on the shaft center (22), is connected with the pull rod (252) and is used for tensioning a chuck (23) to clamp a workpiece;

the material loosening cylinder (27) is mounted on the shaft sleeve (21), is arranged opposite to the other end of the pull rod (252), and is used for pushing the pull rod (252) to loosen a workpiece; and

the discharging device comprises a discharging rod (281) and a discharging cylinder (285), the discharging rod (281) is movably inserted into the pull rod (252) and movably inserted into a material loosening piston rod (271) of the material loosening cylinder (27), and the discharging cylinder (285) is installed on the material loosening piston rod (271) and connected with the discharging rod (281).

2. A spindle as claimed in claim 1, characterised in that the tensioning means comprises:

the disc springs (251) are provided with a plurality of disc springs (251), the disc springs (251) are installed in the shaft hole (221), one end of each disc spring (251) abuts against a second hole shoulder (224) of the shaft hole (221), and the pull rod (252) is movably inserted into each disc spring (251);

the pull head (254) is mounted at the other end of the pull rod (252) and is arranged opposite to the material loosening cylinder (27), and the other end of the disc spring (251) abuts against the pull head (254).

3. A spindle as claimed in claim 2, further comprising: the outer connecting rod (253) is movably inserted into the shaft hole (221) and is respectively connected with the pull head (254) and the pull rod (252).

4. A spindle according to claim 3, wherein the outfeed means further comprises:

the inner connecting rod (283) is movably inserted into the outer connecting rod (253) and is connected with one end of the discharging rod (281); and

the discharging push rod (282) is arranged on the inner connecting rod (283) and movably inserted on the chuck (23).

5. The spindle of claim 4, further comprising: the return spring (284) is movably inserted on the discharging rod (281), and two ends of the return spring (284) are respectively connected with the tensioning device and the discharging rod (281) and used for enabling the discharging rod (281) to be in a retracted state.

6. A spindle according to claim 1, further comprising: the connecting column (272) is connected with the shaft sleeve (21) and the material loosening cylinder (27) respectively.

7. A spindle according to any one of claims 1 to 6, characterised in that the bearings comprise a front bearing (241) and a rear bearing (242), the front bearing (241) and the rear bearing (242) being located at the respective ends of the sleeve (21).

8. The spindle of claim 7, further comprising:

the front end cover (292), the front end cover (292) is fixed at one end of the shaft sleeve (21);

the locking nut (243), the locking nut (243) is installed on the shaft center (22), the front bearing (241) is positioned between the front end cover (292) and the locking nut (243), and the front end cover (292) fixes the front bearing (241) on the shaft sleeve (21) and the shaft center (22);

the rear end cover (291) is mounted on the shaft center (22) and located at one end of the rear bearing (242), and the rear end cover (291) fixes the rear bearing (242) on the shaft center (22).

9. A spindle according to any one of claims 1 to 6, characterised in that the sleeve (21) is provided with a number of heat dissipating slots (211).