Main axle box structure of horizontal lathe

Abstract

A spindle box structure of a horizontal lathe is characterized in that a spindle penetrates through the center of a spindle box, the front end of the spindle extends to the outer side of the spindle box, a spindle box rear end cover is mounted at the rear end of the spindle box, and a rear bearing matched with the rear end of the spindle is mounted on the spindle box rear end cover; a permanent magnet motor is mounted on the spindle, an inner rotor of the permanent magnet motor is fixed on the spindle, and an outer stator of the permanent magnet motor is fixed on the spindle box; a spindle bearing matched with the spindle is installed on the front portion of the spindle box body, and a spindle seal is arranged outside the spindle 5 on the front side of the spindle box body. According to the horizontal lathe main axle box structure, the permanent magnet motor is used for direct drive, a traditional structure is changed, assembly parts are reduced, assembly difficulty is greatly reduced, a transmission chain is simplified through the direct drive structure, power transmission is more direct, gaps in the transmission chain are eliminated, and transmission precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology. Background Technology

[0002] A horizontal lathe is a machine tool primarily used to turn rotating workpieces using a cutting tool. Drills, reamers, taps, dies, and knurling tools can also be used on the lathe for corresponding machining operations. The headstock of a horizontal lathe supports the spindle and enables it to rotate at various speeds. A center can be mounted at the front end of the spindle using a tapered hole, or a chuck and dial can be mounted on the conical surface at the front end of the spindle for workpiece clamping. The traditional structure of a 2-meter horizontal lathe headstock is based on gear transmission, resulting in numerous assembled parts, a complex structure, low transmission accuracy, high cost, and high assembly difficulty. Utility Model Content

[0003] In order to solve the above-mentioned problems of the traditional gear transmission structure of the main headbox of a horizontal lathe, this utility model provides a structure for the main headbox of a horizontal lathe.

[0004] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a horizontal lathe spindle box structure, wherein the spindle 5 is installed through the center of the spindle box body 10 and the front end of the spindle 5 extends to the outside of the spindle box body 10, the rear end cover 12 of the spindle box body 10 is installed at the rear end of the spindle box body 10, and a rear bearing 16 that mates with the rear end of the spindle 5 is installed on the rear end cover 12; a permanent magnet motor 11 is installed on the spindle 5, the inner rotor 17 of the permanent magnet motor 11 is fixed on the spindle 5, and the outer stator 18 of the permanent magnet motor is fixed on the spindle box body 10; a spindle bearing 4 that mates with the spindle 5 is installed at the front of the spindle box body 10, and a spindle seal 3 is provided on the front side of the spindle box body 10 outside the spindle 5.

[0005] A planar bearing 7, which mates with the spindle 5, is installed inside the spindle housing 10, located behind the spindle bearing 4.

[0006] The bearing cover 13 is installed on the rear bearing 16. The bearing cover 13 is fixed on the rear end cover 12 of the spindle housing. The bearing seal 14 is installed inside the bearing cover 12 outside the spindle 5. The bearing inner retaining ring 15 is installed at the rear end of the spindle 5.

[0007] A sealing ring 9 is installed on the spindle 5 behind the plane bearing 7, and the sealing ring 9 is fixed on the spindle housing 10.

[0008] The spindle housing 10 is fixedly installed on the front side outside the spindle seal 3, with the spindle seal box 2 installed.

[0009] The chuck 1 is mounted at the front end of the spindle 5.

[0010] The main spindle box structure of this utility model uses a permanent magnet motor for direct drive, which changes the traditional structure, reduces the number of assembly parts, greatly reduces the assembly difficulty, simplifies the transmission chain, transmits power more directly, eliminates gaps in the transmission chain, and improves transmission accuracy. Attached Figure Description

[0011] Figure 1 This is a front sectional view of the main spindle box of the horizontal lathe of this utility model.

[0012] In the diagram: 1. Chuck, 2. Spindle seal box, 3. Spindle seal, 4. Spindle bearing, 5. Spindle, 6. Spindle bearing lock nut, 7. Surface bearing, 8. Surface bearing lock nut, 9. Sealing ring, 10. Spindle housing, 11. Permanent magnet motor, 12. Rear end cover of spindle housing, 13. Bearing cover, 14. Bearing seal, 15. Inner retaining ring of bearing, 16. Rear bearing, 17. Inner rotor of motor, 18. Outer stator of motor. Detailed Implementation

[0013] The structure of the main spindle box of the horizontal lathe of this utility model is as follows: Figure 1 As shown, the chuck 1 is fixed to the spindle 5 with screws, the spindle seal box 2 is fixed to the spindle housing 10 with screws, and the spindle seal 3 is installed inside. The spindle bearing 4 is fixed to the spindle housing 10 with the spindle bearing locking nut 6. The spindle 5 is installed through the center of the spindle housing 10, and its front end extends to the outside of the spindle housing 10. The rear end of the spindle housing 10 is fitted with a rear end cover 12 via its own tapered surface and screws. A rear bearing 16 that mates with the rear end of the spindle 5 is installed on the rear end cover 12. A bearing cover 13 is installed on the rear bearing 16 and is fixed to the rear end cover 12 with screws. A bearing seal 14 is installed inside the bearing cover 12 outside the spindle 5. An inner bearing retaining ring 15 is installed at the rear end of the spindle 5 to prevent the rear bearing 16 from moving laterally. A permanent magnet motor 11 is installed on the spindle 5. The inner rotor 17 of the permanent magnet motor 11 is fixed to the spindle 5 by a key, and the outer stator 18 of the permanent magnet motor is fixed to the spindle housing 10 by a key and screws. A spindle bearing 4 that mates with the spindle 5 is installed at the front of the spindle housing 10, and a spindle seal 3 is provided on the front side of the spindle housing 10 outside the spindle 5. A planar bearing 7, which mates with the spindle 5, is installed inside the spindle housing 10, located behind the spindle bearing 4. The planar bearing 7 is fixed to the spindle housing 10 by a planar bearing locking nut 8. A sealing ring 9 is installed on the spindle 5, located behind the planar bearing 7, and is fixed to the spindle housing 10.

[0014] Working principle: When the permanent magnet motor 11 is energized, the inner rotor 17 rotates, thereby driving the spindle 5 to rotate. The spindle 5 drives the chuck 1 mounted on it to rotate, and processes the workpiece on the chuck 1. This realizes the direct drive structure of the motor and the spindle. Through the cooperation of the spindle bearing 4, the plane bearing 7, and the rear bearing 16, i.e. the sealing structure on the spindle housing 10, the transmission accuracy is greatly improved.

[0015] This utility model has been described through embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, modifications can be made to these features and embodiments to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A horizontal lathe main spindle box structure, characterized in that: The spindle (5) is installed through the center of the spindle housing (10) and the front end of the spindle (5) extends to the outside of the spindle housing (10). The rear end cover (12) of the spindle housing (10) is installed at the rear end of the spindle housing (10). The rear bearing (16) that mates with the rear end of the spindle (5) is installed on the rear end cover (12). The permanent magnet motor (11) is installed on the spindle (5). The inner rotor (17) of the permanent magnet motor (11) is fixed on the spindle (5). The outer stator (18) of the permanent magnet motor is fixed on the spindle housing (10). The spindle bearing (4) that mates with the spindle (5) is installed at the front of the spindle housing (10). The front side of the spindle housing (10) located outside the spindle (5) is provided with a spindle seal (3).

2. The horizontal lathe spindle box structure according to claim 1, characterized in that: A planar bearing (7) that mates with the spindle (5) is installed inside the spindle housing (10) on the rear side of the spindle bearing (4).

3. The horizontal lathe spindle box structure according to claim 1, characterized in that: The bearing cover (13) is installed on the rear bearing (16). The bearing cover (13) is fixed on the rear end cover (12) of the spindle housing. The bearing seal (14) is installed inside the bearing cover (13) outside the spindle (5). The bearing inner retaining ring (15) is installed at the rear end of the spindle (5).

4. The horizontal lathe spindle box structure according to claim 1, characterized in that: A sealing ring (9) is installed on the spindle (5) behind the plane bearing (7), and the sealing ring (9) is fixed on the spindle housing (10).

5. The horizontal lathe spindle box structure according to claim 1, characterized in that: The spindle housing (10) is located on the front side outside the spindle seal (3) and the spindle seal box (2) is fixedly installed.

6. The horizontal lathe spindle box structure according to claim 1, characterized in that: The spindle (5) has a chuck (1) mounted at its front end.

Images