CN211413664U

CN211413664U - Transmission main shaft structure for numerical control milling machine

Info

Publication number: CN211413664U
Application number: CN201922009140.6U
Authority: CN
Inventors: 王达理
Original assignee: Jiujiang Ruida Pump Co ltd
Current assignee: Jiujiang Ruida Pump Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-09-04
Anticipated expiration: 2029-11-20

Abstract

The utility model discloses a transmission main shaft structure for a numerical control milling machine, which comprises a milling head, wherein the milling head comprises a power mechanism, a fixed shell, an installation chuck and a height quick adjusting device, the upper part of the fixed shell is provided with the power mechanism, and the power mechanism comprises a milling motor and a transmission; the transmission main shaft structure of the numerical control milling machine replaces the mode of integrally adjusting the height of the milling cutter by the structures of the milling head, the power mechanism, the milling machine motor, the speed changer, the fixed shell, the milling cutter, the mounting chuck, the buffer seat, the buffer spring, the sliding coupling, the limiting plate, the limiting cap, the height quick adjusting device, the adjusting screw hole, the lead screw, the adjusting motor and the mounting groove, so that the quick adjustment of the height of the transmission main shaft is realized, and the problems of slow reaction and low efficiency of the height adjustment of the existing milling cutter are solved; the adjusting efficiency is greatly improved; meanwhile, the buffer protection of the milling cutter is realized by arranging the buffer structure.

Description

Transmission main shaft structure for numerical control milling machine

Technical Field

The utility model relates to a numerically controlled fraise machine's transmission main shaft structure field specifically is a transmission main shaft structure for numerically controlled fraise machine.

Background

The numerical control milling machine is also called CNC milling machine. English means a milling machine controlled by an electronic counter. The numerical control milling machine is an automatic processing device developed on the basis of a common milling machine, the processing technologies of the two are basically the same, and the structures are somewhat similar. The numerical control milling machine is divided into two categories, namely a tool magazine without tool magazine and a tool magazine with tool magazine. Wherein the numerical control milling machine with the tool magazine is also called as a machining center. The numerical control milling machine is a numerical control machine with strong processing function, and a processing center, a flexible processing unit and the like which are rapidly developed at present are generated on the basis of the numerical control milling machine and the numerical control boring machine, and the milling mode cannot be separated from the milling mode. Because the numerical control milling process is the most complex and the technical problems to be solved are the most, the milling process is always the key point when people research and develop software of a numerical control system and an automatic programming language at present.

When a special-shaped part or a flexible material is processed, the height of a milling cutter is generally required to be quickly adjusted, but the existing three-coordinate integral adjustment mode has the problems of low reaction speed and low adjustment efficiency; meanwhile, in the machining process, the milling cutter needs to be protected in a buffering mode, but the existing equipment cannot meet the requirement, so that the novel transmission main shaft structure of the numerical control milling machine is required.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transmission main shaft structure for numerically controlled fraise machine to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a transmission main shaft structure for a numerical control milling machine comprises a milling head, wherein the milling head comprises a power mechanism, a fixed shell, an installation chuck and a height quick adjusting device, the power mechanism is arranged at the upper part of the fixed shell and comprises a milling motor and a speed changer, the milling motor is vertically fixed in the fixed shell through a bolt and a nut, the speed changer is arranged at the front side of the milling motor and fixed in the fixed shell through a bolt and a nut, and an input rotating shaft of the speed changer is fixedly connected with a rotating shaft of the milling motor through a coupler; the lower part of the fixed shell is provided with a buffer seat, the front part of the buffer seat is provided with an installation groove, and a buffer spring is arranged in the installation groove; the front side of an output rotating shaft of the transmission is provided with a mounting chuck, and the outer side of the mounting chuck is provided with a limiting plate; the buffer spring is sleeved outside the mounting chuck; the rear end of the mounting chuck is in sliding connection with an output rotating shaft of the transmission through a sliding coupler; the lower end of the fixed shell is provided with external threads, the limiting cap is internally provided with matched internal threads, and the limiting cap is fixedly connected with the fixed shell through thread matching; the front end of the mounting chuck is provided with a milling cutter; the outside of set casing is provided with highly fast adjusting device, highly fast adjusting device including adjusting motor, lead screw and regulation screw, the upside of set casing is provided with adjusting motor, and adjusting motor's front side is provided with the lead screw, and the pivot fixed connection of shaft coupling and adjusting motor is passed through to the rear end of lead screw, be provided with on the set casing with lead screw matched with regulation screw, the lead screw is through adjusting screw and set casing connection.

As a further aspect of the present invention: the fixed shell is made of alloy materials; the buffer seat is of a cylindrical structure.

As a further aspect of the present invention: the limiting plate and the mounting chuck are of an integrally formed structure.

As a further aspect of the present invention: the machine body position that the front end of lead screw corresponds is provided with the mounting hole, is provided with the bearing in the mounting hole, and the front end of lead screw is fixed in the bearing hole.

As a further aspect of the present invention: one side of the fixed shell is provided with a slide rail, the machine body is provided with a slide groove matched with the slide rail, and the fixed shell is connected with the machine body through the matching of the slide rail and the slide groove.

Compared with the prior art, the beneficial effects of the utility model are that: the transmission main shaft structure of the numerical control milling machine replaces the mode of integrally adjusting the height of the milling cutter by the structures of the milling head, the power mechanism, the milling machine motor, the speed changer, the fixed shell, the milling cutter, the mounting chuck, the buffer seat, the buffer spring, the sliding coupling, the limiting plate, the limiting cap, the height quick adjusting device, the adjusting screw hole, the lead screw, the adjusting motor and the mounting groove, so that the quick adjustment of the height of the transmission main shaft is realized, and the problems of slow reaction and low efficiency of the height adjustment of the existing milling cutter are solved; the adjusting efficiency is greatly improved; meanwhile, the buffer protection of the milling cutter is realized by arranging the buffer structure.

Drawings

Fig. 1 is an external structural schematic diagram of a transmission spindle structure for a numerically controlled milling machine.

Fig. 2 is a schematic structural diagram of the interior of a transmission spindle structure for a numerically controlled milling machine.

Fig. 3 is a schematic diagram of a fitting structure of a mounting chuck in a transmission spindle structure for a numerically controlled milling machine.

FIG. 4 is a schematic diagram of a mounting chuck used in a drive spindle structure of a numerically controlled milling machine.

In the figure: 1. a milling head; 2. a power mechanism; 3. a milling motor; 4. a transmission; 5. a stationary case; 6. milling cutters; 7. mounting a chuck; 8. a buffer seat; 9. a buffer spring; 10. a slip coupling; 11. a limiting plate; 12. a limiting cap; 13. a height quick adjustment device; 14. adjusting the screw hole; 15. a lead screw; 16. adjusting the motor; 17. and (4) mounting the groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, in an embodiment of the present invention, a transmission spindle structure for a numerically controlled milling machine includes a milling head 1, where the milling head 1 includes a power mechanism 2, a fixing housing 5, an installation chuck 7 and a height quick adjustment device 13, the upper portion of the fixing housing 5 is provided with the power mechanism 2, the fixing housing 5 is made of an alloy material, the power mechanism 2 includes a milling motor 3 and a transmission 4, the milling motor 3 is vertically fixed in the fixing housing 5 through a bolt and a nut, the front side of the milling motor 3 is provided with the transmission 4, the transmission 4 is fixed in the fixing housing 5 through a bolt and a nut, and an input rotating shaft of the transmission 4 is fixedly connected with a rotating shaft of the milling motor 3 through a shaft coupling; the lower part of the fixed shell 5 is provided with a buffer seat 8, the buffer seat 8 is of a cylindrical structure, the front part of the buffer seat 8 is provided with an installation groove 17, and a buffer spring 9 is arranged in the installation groove 17; the front side of an output rotating shaft of the transmission 4 is provided with an installation chuck 7, the outer side of the installation chuck 7 is provided with a limiting plate 11, and the limiting plate 11 and the installation chuck 7 are of an integrally formed structure; the buffer spring 9 is sleeved outside the mounting chuck 7; the buffer spring 9 is used for buffering the mounting chuck 7, so that buffer protection in the machining process is realized, and the machining adaptability is improved; the rear end of the mounting chuck 7 is connected with an output rotating shaft of the transmission 4 in a sliding way through a sliding coupling 10; the mounting clamp 7 is connected in a sliding manner, so that a movable space is reserved for the mounting clamp 7, and the mounting clamp 7 can move up and down conveniently; the lower end of the fixed shell 5 is provided with external threads, the limiting cap 12 is internally provided with matched internal threads, and the limiting cap 12 is fixedly connected with the fixed shell 5 through thread matching; the limiting cap 12 is used for limiting the mounting chuck 7 and fixing the buffer spring 9; the front end of the mounting chuck 7 is provided with a milling cutter 6;

a height quick adjusting device 13 is arranged on the outer side of the fixing shell 5, the height quick adjusting device 13 comprises an adjusting motor 16, a lead screw 15 and an adjusting screw hole 14, the adjusting motor 16 is arranged on the upper side of the fixing shell 5, the lead screw 15 is arranged on the front side of the adjusting motor 16, the rear end of the lead screw 15 is fixedly connected with a rotating shaft of the adjusting motor 16 through a coupler, the adjusting screw hole 14 matched with the lead screw 15 is arranged on the fixing shell 5, and the lead screw 15 is connected with the fixing shell 5 through the adjusting screw hole 14; a mounting hole is formed in the position, corresponding to the front end of the lead screw 15, of the machine body, a bearing is arranged in the mounting hole, and the front end of the lead screw 15 is fixed in the bearing hole; a slide rail is arranged on one side of the fixed shell 5, a slide groove matched with the slide rail is arranged on the machine body, and the fixed shell 5 is connected with the machine body through the matching of the slide rail and the slide groove; the height quick adjusting device 13 is used for driving the fixing head to move up and down so as to realize quick adjustment of the processing height;

when the milling cutter is used, when a special-shaped part or a flexible material is machined or a part with large change of machining height difference is machined, the height of the milling head 1 is quickly adjusted through the height quick adjusting device 13, and when the height quick adjusting device 13 works, the adjusting motor 16 rotates to drive the screw rod 15 to rotate, so that the fixed shell 5 is driven to move up and down quickly, and the height of the milling cutter 6 is quickly adjusted; the problems of slow response and low adjusting speed of the existing three-coordinate type machine base type adjustment are solved; the milling cutter 6 is protected in a buffering mode through the installation clamping head 7, the sliding coupler 10 and the buffering spring 9, and therefore the problems of flexible materials, rapidness and high-efficiency machining of special-shaped parts are solved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The transmission main shaft structure for the numerical control milling machine comprises a milling head (1) and is characterized in that the milling head (1) comprises a power mechanism (2), a fixed shell (5), an installation chuck (7) and a height quick adjusting device (13), the power mechanism (2) is arranged on the upper portion of the fixed shell (5), the power mechanism (2) comprises a milling motor (3) and a transmission (4), the milling motor (3) is vertically fixed in the fixed shell (5) through a bolt and a nut, the transmission (4) is arranged on the front side of the milling motor (3), the transmission (4) is fixed in the fixed shell (5) through the bolt and the nut, and an input rotating shaft of the transmission (4) is fixedly connected with a rotating shaft of the milling motor (3) through a coupler; a buffer seat (8) is arranged at the lower part of the fixed shell (5), an installation groove (17) is arranged at the front part of the buffer seat (8), and a buffer spring (9) is arranged in the installation groove (17); an installation chuck (7) is arranged on the front side of an output rotating shaft of the transmission (4), and a limiting plate (11) is arranged on the outer side of the installation chuck (7); the buffer spring (9) is sleeved outside the mounting chuck (7); the rear end of the mounting chuck (7) is connected with an output rotating shaft of the transmission (4) in a sliding manner through a sliding coupling (10); the lower end of the fixed shell (5) is provided with an external thread, the limiting cap (12) is internally provided with a matched internal thread, and the limiting cap (12) is fixedly connected with the fixed shell (5) through thread matching; the front end of the mounting chuck (7) is provided with a milling cutter (6); the outside of set casing (5) is provided with highly fast adjusting device (13), highly fast adjusting device (13) including adjusting motor (16), lead screw (15) and regulation screw (14), the upside of set casing (5) is provided with adjusting motor (16), and the front side of adjusting motor (16) is provided with lead screw (15), and the pivot fixed connection of shaft coupling and adjusting motor (16) is passed through to the rear end of lead screw (15), be provided with on set casing (5) and lead screw (15) matched with regulation screw (14), lead screw (15) are connected through adjusting screw (14) and set casing (5).

2. The transmission main shaft structure for the numerically controlled milling machine according to claim 1, wherein the fixed shell (5) is made of an alloy material; the buffer seat (8) is of a cylindrical structure.

3. The transmission main shaft structure for the numerical control milling machine according to claim 1, characterized in that the limiting plate (11) and the mounting chuck (7) are of an integrally formed structure.

4. The transmission main shaft structure for the numerical control milling machine according to claim 1, characterized in that a mounting hole is formed at a position of the machine body corresponding to the front end of the lead screw (15), a bearing is arranged in the mounting hole, and the front end of the lead screw (15) is fixed in the bearing hole.

5. The transmission main shaft structure for the numerical control milling machine according to claim 1, characterized in that one side of the fixed shell (5) is provided with a slide rail, the machine body is provided with a slide groove matched with the slide rail, and the fixed shell (5) is connected with the machine body through the matching of the slide rail and the slide groove.