CN218926257U

CN218926257U - Lathe headstock device

Info

Publication number: CN218926257U
Application number: CN202223150352.4U
Authority: CN
Inventors: 程才勇; 邱世军; 范小玲
Original assignee: Wenzhou Hengqing Intelligent Machinery Co ltd
Current assignee: Wenzhou Hengqing Intelligent Machinery Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-04-28
Anticipated expiration: 2032-11-24

Abstract

The utility model provides a lathe headstock device, includes headstock, main shaft, front bearing and rear bearing, the main shaft runs through the headstock setting, the main shaft has front end and rear end, front bearing and rear bearing set up respectively at the inside both ends of main shaft in headstock, main shaft stretches out and sets up front spindle location sealing unit and rear spindle location sealing unit respectively on the both ends of headstock, through the headstock part after improving, whole rigidity improves, and cutting ability improves, and bearing life-span is prolonged, improves productivity, reduction in production cost.

Description

Lathe headstock device

Technical Field

The utility model relates to the technical field of lathes, in particular to a lathe spindle box device.

Background

In the prior art, a TT+DT structure is adopted for the main shaft box bearing combination, and though the structural strength is high, the pre-tightening force load is difficult to control and stress to be consistent by experience, so that the main shaft and main shaft box detection means are limited, and the quality of parts cannot be effectively ensured.

Disclosure of Invention

In view of this, the present utility model provides a headstock device for a lathe.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a lathe headstock device, includes headstock, main shaft, front bearing and back bearing, the main shaft runs through the headstock setting, the main shaft has front end and rear end, front bearing and back bearing set up respectively in the inside one side of headstock of main shaft front end and the inside one side of headstock of main shaft rear end, main shaft stretches out and sets up front spindle location sealing unit and back spindle location sealing unit respectively on the both ends of headstock.

Preferably, the front main shaft positioning sealing unit comprises a main shaft front end positioning piece, a sealing piece and a main shaft sealing connection part, wherein the main shaft front end positioning piece is sleeved on the front end of the main shaft, a front end positioning sealing ring groove is formed in the main shaft front end positioning piece, a sealing part is concavely formed in the groove wall of the front end positioning sealing ring groove, and the sealing piece is arranged in the sealing part.

Preferably, the front end of the main shaft protrudes to form a sealing end, the sealing end stretches into the front end positioning sealing ring groove to be in sealing connection with the front end positioning piece of the main shaft, the front end of the main shaft is provided with the front end sealing ring groove, and one end of the front end positioning piece of the main shaft stretches into the front end sealing ring groove to be in sealing connection with the main shaft.

Preferably, the rear spindle positioning sealing unit comprises a spindle rear end positioning piece and a rear bearing positioning piece, wherein a positioning through groove is formed in the spindle rear end positioning piece, one end of the rear bearing positioning piece penetrates through the positioning through groove and stretches into the spindle box to prop against the rear bearing, a connecting ring groove is formed in one side, close to the positioning through groove, of the spindle rear end positioning piece, a connecting portion is arranged on the rear bearing positioning piece, and the connecting portion stretches into the connecting ring groove to be connected with the spindle rear end positioning piece.

Preferably, the front bearing is composed of four groups of bearings, and the rear bearing is composed of two groups of bearings.

The utility model has the beneficial effects that: the improved main shaft box component has the advantages of improving the overall rigidity, improving the cutting capability, prolonging the service life of the bearing, improving the labor productivity and reducing the production cost.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is an enlarged view at A of FIG. 1;

fig. 3 is an enlarged view at B in fig. 1.

Detailed Description

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

The utility model will be further described with reference to the drawings.

The utility model provides the following technical scheme:

as shown in fig. 1-3, the utility model discloses a lathe spindle box device, which comprises a spindle box 1, a spindle 2, a front bearing 3 and a rear bearing 4, wherein the spindle 2 is arranged through the spindle box 1, the spindle 2 is provided with a front end 5 and a rear end 6, the front bearing 3 and the rear bearing 4 are respectively arranged on one side of the front end 5 of the spindle 2, which is positioned in the spindle box 1, and one side of the rear end 6 of the spindle 2, which is positioned in the spindle box 1, and two ends of the spindle 2, which extend out of the spindle box 1, are respectively provided with a front spindle positioning sealing unit 7 and a rear spindle positioning sealing unit 8.

Further, the front spindle positioning sealing unit 7 comprises a spindle front end positioning member 9, a sealing member 13 and a spindle sealing connecting portion 10, the spindle front end positioning member 9 is sleeved on the front end 5 of the spindle 2, a front end positioning sealing ring groove 11 is formed in the spindle front end positioning member 9, a sealing portion 12 is formed in the groove wall of the front end positioning sealing ring groove 11 in a concave mode, and the sealing member 13 is arranged in the sealing portion 12. Specifically, in this embodiment, the positioning holes 15 are formed on the front end positioning member 9 and the rear end positioning member 14 of the spindle, the connecting screw holes 16 are formed on the spindle box 1 corresponding to the positioning holes 15, the connecting screws 17 are arranged between the positioning holes 15 and the connecting screw holes 16, and the front end positioning member 9 and the rear end positioning member 14 of the spindle are connected and fixed with the spindle box 1 through the connecting screws 17.

Further, the front end 5 of the spindle 2 protrudes to form a sealing end 18, the sealing end 18 extends into the front end positioning sealing ring groove 11 to be in sealing connection with the spindle front end positioning piece 9, the front end 5 of the spindle 2 is provided with a front end sealing ring groove 19, and one end of the spindle front end positioning piece 9 extends into the front end sealing ring groove 19 to be in sealing connection with the spindle 2.

Further, the rear spindle positioning sealing unit 8 includes a spindle rear end positioning member 14 and a rear bearing positioning member 20, a positioning through groove 21 is formed in the spindle rear end positioning member 14, one end of the rear bearing positioning member 20 passes through the positioning through groove 21 and stretches into the spindle box 1 to abut against the rear bearing 4, a connecting ring groove 22 is formed in one side, close to the positioning through groove 21, of the spindle rear end positioning member 14, a connecting portion 23 is formed in the rear bearing positioning member 20, and the connecting portion 23 stretches into the connecting ring groove 22 to be connected with the spindle rear end positioning member 14.

Further, the front bearing 3 is composed of four sets of bearings, and the rear bearing 4 is composed of two sets of bearings. Specifically, in this embodiment, the front bearing 3 and the rear bearing 4 are provided with a front bearing inner lock nut 24 and a rear bearing inner lock nut 25 on the sides near the center of the spindle 2, respectively, and the front bearing inner lock nut 24 and the rear bearing inner lock nut 25 are both in threaded connection with the spindle 2 and respectively compress the front bearing 3 and the rear bearing 4, thereby fixing the front bearing 3 and the rear bearing 4 on the spindle 2 in combination with the corresponding spindle front end positioning member 9 and spindle rear end positioning member 14 to prevent movement.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a lathe headstock device, includes headstock, main shaft, front bearing and rear bearing, the main shaft runs through the headstock setting, the main shaft has front end and rear end, front bearing and rear bearing set up respectively at the inside both ends of main shaft in the headstock, its characterized in that: and the two ends of the spindle extending out of the spindle box are respectively provided with a front spindle positioning sealing unit and a rear spindle positioning sealing unit.

2. The lathe headstock device according to claim 1, wherein: the front main shaft positioning sealing unit comprises a main shaft front end positioning piece, a sealing piece and a main shaft sealing connection part, wherein the main shaft front end positioning piece is sleeved on the front end of the main shaft, a front end positioning sealing ring groove is formed in the main shaft front end positioning piece, a sealing part is formed by inwards concave on the groove wall of the front end positioning sealing ring groove, and the sealing piece is arranged in the sealing part.

3. The lathe headstock device according to claim 2, wherein: the front end of the main shaft protrudes to form a sealing end, the sealing end stretches into the front end positioning sealing ring groove to be in sealing connection with the front end positioning piece of the main shaft, the front end of the main shaft is provided with the front end sealing ring groove, and one end of the front end positioning piece of the main shaft stretches into the front end sealing ring groove to be in sealing connection with the main shaft.

4. The lathe headstock device according to claim 1, wherein: the rear main shaft positioning sealing unit comprises a main shaft rear end positioning piece and a rear bearing positioning piece, wherein a positioning through groove is formed in the main shaft rear end positioning piece, one end of the rear bearing positioning piece penetrates through the positioning through groove and stretches into the main shaft box to prop against the rear bearing, a connecting ring groove is formed in one side, close to the positioning through groove, of the main shaft rear end positioning piece, a connecting portion is arranged on the rear bearing positioning piece, and the connecting portion stretches into the connecting ring groove to be connected with the main shaft rear end positioning piece.

5. The lathe headstock device according to claim 1, wherein: the front bearing consists of four groups of bearings, and the rear bearing consists of two groups of bearings.