CN209716546U - Milling head 360-degree rotating positioning electric universal milling and drilling device - Google Patents

Abstract

The utility model discloses an electric universal milling and drilling device with 360-degree rotation and positioning of a milling head. The mounting table, the column rotating mounting table includes a mobile rotary connector, a column screw feed device is arranged above the mobile rotary connector, and the column screw feed device is fixedly connected with the column; a slider is provided on one side of the column, and the slider There is a rotating milling head device on it. The utility model is small in size and easy to carry. It can not only adjust the processing angle and direction of the milling head at 360 degrees in the X-axis and Z-axis directions, but also adjust the telescopic length of the milling head, which reduces the limitation of the connection of the milling head and satisfies the narrow processing area. Work requirements make the use of the milling machine more convenient, improve the efficiency of milling work, and simplify the operation of the column movement and rotation of the milling machine, and the rotation accuracy is high, which improves the construction efficiency and construction accuracy.

Description

Milling head 360-degree rotating positioning electric universal milling and drilling device

technical field

The utility model relates to a milling machine, in particular to a 360-degree rotating and positioning electric universal milling and drilling device for a milling head.

Background technique

Milling machine is an indispensable general-purpose equipment in the machinery manufacturing industry, and it is also a high-yield machine tool in the machine tool industry after the output of lathes. Existing milling machines are mainly of horizontal or vertical structure, which not only has a single function, but also has a large bed volume, and the processing stroke of the milling head is limited, so parts cannot be milled, bored, drilled, etc. It is difficult for a milling machine to process the slope of the workpiece, so for the processing of irregular parts, it often needs to be clamped multiple times or on a variety of machine tools. It can only be completed on a special machine tool, not only the operation is cumbersome, the processing efficiency is low, and the production cost is also high. Existing milling machines are difficult to disassemble and assemble because of the milling head. During the processing and production process, they are often shut down for maintenance due to damage to the milling head. Therefore, the existing milling machines have the disadvantages of large volume, single function, cumbersome processing operations, difficult disassembly and assembly of the milling head, and low processing and maintenance efficiency.

The inventor invented such as: "portable three-axis rotary positioning universal milling machine", "magnetic rear pull rod positioning rotary universal milling machine", "shaft holding positioning rotary universal milling machine" and other small However, in the follow-up use, the inventor found that although the problem of adjusting the milling and drilling direction by the rotation of the milling head was solved, the positions of the milling head and the base of the machine tool were relatively fixed, and the position of the milling head during actual production and processing The connection method still has certain limitations, and the adjustment range of the processing position is limited. Especially when working in a small and narrow processing area, the base of the machine tool often becomes an important factor restricting the processing position of the washing head. If the extension rod is simply used to connect the milling head to solve This problem, however, cannot achieve the purpose of adjusting the direction of milling and drilling, and the disassembly and assembly of the extension rod is complicated, and it is also difficult to stably connect the extension rod to the machine base, so it is still relatively difficult to process and use; and it is difficult to move the column axially during construction in a narrow processing area , At the same time, it is difficult to perform manual rotation, and the rotation accuracy is low, not only the construction efficiency is not high, but also the construction accuracy is difficult to guarantee.

Therefore, the current milling machine has the problems of large volume of milling machine and single function of the milling head, while the connection mode of the milling head of the small universal milling machine is limited, the adjustment range of the processing position of the milling head is limited, and the connection stability of the connecting device is poor. The problem of complex disassembly and assembly of the connecting piece device makes it difficult to use the milling machine; there are also problems such as relatively difficult axial movement of the column and low precision of column rotation, which not only has low construction efficiency, but also poor construction accuracy.

Utility model content

The purpose of the utility model is to provide an electric universal milling and drilling device with a 360-degree rotation and positioning of a milling head. The utility model is small in size and easy to carry. It can not only adjust the processing angle and direction of the milling head at 360° in the X-axis and Z-axis directions, but also adjust the telescopic length of the milling head, which reduces the limitation of the connection of the milling head and satisfies the narrow processing area. Work requirements make the milling machine more convenient to use, improve milling work efficiency, and simplify the operation of milling column movement and rotation, and the rotation accuracy is high, improving construction efficiency and construction accuracy.

The technical scheme of the utility model: the electric universal milling and drilling device with 360-degree rotation and positioning of the milling head includes a base, and a column is arranged above the base, and the base includes a horizontal screw feed seat, and a column is arranged above the horizontal screw feed seat The rotary mounting table and the column rotating mounting table include a mobile rotary connecting piece that is movably connected with the horizontal screw feed seat, and a column screw feeding device is arranged above the moving rotary connecting piece, and the column screw feeding device is fixedly connected with the column; One side is provided with a slider, and a rotating milling head device is provided on the slider, and the rotating milling head device includes a rotating positioning hoop device and a milling head arranged on the slider, and the milling head is connected with the rotating positioning hoop device The slider is connected; the rotation positioning hoop device includes a positioning plate, a hoop connector and a connecting shaft; the connecting shaft is connected to the positioning plate through a hoop connector; the hoop connector includes a hoop base And the hoop splint, the hoop splint is connected with the hoop base through bolts, the hoop base and the hoop splint are respectively provided with semicircular hoop holes with corresponding shapes, the connecting shaft is arranged in the hoop hole, and the hoop The hoop base is connected to the rotating mounting plate through bolts; the connecting shaft includes a columnar connecting shaft, and one end of the columnar connecting shaft is connected to the milling head through a flange connecting piece.

In the aforementioned electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, the positioning plate includes a positioning mounting chassis, a rotating mounting plate is arranged above the positioning mounting chassis, T-shaped sliding bolts are arranged in the positioning mounting chassis, and the rotating mounting plate passes through The T-shaped sliding bolt is connected with the positioning installation chassis.

In the aforementioned electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, a bolt chute is provided in the positioning installation chassis, a bolt installation port is provided at the bottom of the bolt chute, and the T-shaped sliding bolt is arranged in the bolt chute A set of screw mounting holes is also provided in the positioning installation chassis, four positioning grooves are evenly arranged on the outer wall eaves of the positioning installation chassis, and scales are arranged on the outer wall of the positioning installation chassis.

In the aforementioned electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, four positioning balls are arranged under the rotating mounting plate, the positioning balls are aligned with the positions of the positioning grooves, and the radius of the positioning balls is less than or equal to the positioning Groove radius.

In the aforementioned electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, the milling head includes a rotating motor, and a milling cutter installation port is provided below the rotating motor, and the rotating motor is connected to the flange connecting piece through bolts.

In the aforementioned electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, a dovetail installation groove is provided in the column, a lifting shaft is provided on one side of the column, a wrench socket is provided at one end of the lifting shaft, and a motor is provided on one side of the column. Switch, the motor switch is connected with the milling head through wires.

In the aforementioned electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, one side of the slider is provided with a dovetail mounting block and a rack, and the dovetail mounting block corresponds to the shape of the dovetail mounting groove; the other side of the slider is provided with a mounting The mounting surface is provided with positioning bumps, and the positioning bumps are provided with mounting screw holes.

In the aforementioned electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, the moving rotary connector includes a bottom sliding plate connected to the horizontal screw feed seat, and the bottom sliding plate connects with the column screw feeding device through the electric rotating disc. connect.

In the aforementioned electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, a dovetail guide block A is provided on the upper surface of the feed seat of the transverse screw rod, and a dovetail groove corresponding to the shape of the dovetail guide block A is provided on the lower surface of the bottom sliding plate. A, the bottom sliding plate is movably connected with the horizontal screw feed seat through the matching installation of the dovetail groove A and the dovetail guide block A; The thread of the rod corresponds to the slide block connected.

In the aforementioned electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, the column screw feeding device includes a guide plate connected to the electric rotating disk, and the surface of the guide plate is provided with a dovetail guide block B, and the column screw feeds the knife. The device also includes a column connection plate, the upper surface of the column connection plate is provided with screw holes, the lower surface of the column connection plate is provided with a dovetail groove B corresponding to the shape of the dovetail guide block B, and the column connection plate passes through the matching of the dovetail groove B and the dovetail guide block B. Installation and flexible connection with the guide plate: a screw column is provided under the connecting plate of the column, and a sliding block corresponding to the thread of the screw column is provided on the guide plate.

Compared with the prior art, the utility model has the following advantages:

(1) Small size, easy to carry, easy to disassemble; the milling head is installed on the slider by setting the rotating positioning hoop device, which is convenient for the installation and disassembly of the milling head; by setting the positioning plate, the hoop connector and the connecting shaft It is used to connect the milling head and the base of the machine tool, where the positioning plate is used to connect with the column of the machine tool, the connecting shaft is used to connect with the milling head, and the hoop connecting piece is used to connect the positioning plate and the connecting shaft; the connecting shaft is connected through the column The flange connecting piece at one end of the shaft is connected to the milling head, the hoop base of the hoop connector is connected to the positioning plate through bolts, and the columnar connecting shaft is put into the semicircular hoop hole on the side of the hoop base, and The semicircular hoop hole on one side of the hoop splint clamps the columnar connecting shaft, aligns the hoop base with the hoop splint, and uses the bolts connecting the hoop base and the hoop splint during the tightening process to make the The hoop base and the hoop splint lock the columnar connecting shaft to complete the connection. Not only is the installation easy, but also the milling head is installed stably; by setting the dovetail installation groove in the column and the dovetail installation groove on the slider The dovetail mounting block with the same shape not only facilitates the installation of the slider, but also prevents the slider from skewing during the lifting process and improves the machining accuracy.

(2) The processing angle can be adjusted 360° in the direction of X-axis and Z-axis to adjust the direction of the milling head, and the telescopic length of the milling head can be adjusted, which reduces the limitation of the connection of the milling head, meets the working requirements of the narrow processing area, and makes the milling machine more convenient to use. It is convenient and improves the working efficiency of milling; the utility model sets the positioning plate, and connects the positioning mounting chassis and the rotating mounting plate with T-shaped sliding bolts, so that the rotating mounting plate can produce relative rotation. The relative rotation of the mounting plate can be used for 360-degree rotation to adjust the processing direction. By setting four positioning grooves evenly on the positioning mounting chassis, and at the same time setting four positioning protruding balls evenly at the corresponding positions of the rotating mounting plate, the positioning grooves are used during the rotation process. The groove and the positioning protruding ball cooperate to realize rapid positioning; and by setting the connecting shaft to connect the milling head, the position of the connecting shaft can be locked by adjusting the hoop connecting part to lock the shaft, and the expansion and contraction of the milling head can be adjusted, and the connecting shaft can also be rotated The processing direction of the milling head is adjusted 360 degrees in the axial direction of the connecting shaft; by setting the rack on the slider, and by setting the lifting shaft on the column, the rack is rotated by the lifting shaft to make the rack move relative to each other, thereby Drive the slider up and down to make the milling head move up and down; by setting the X-axis screw feed device and Y-axis screw feed device on the base, it is convenient to adjust the processing position and facilitate the processing operation; by setting the motor switch, the milling cutter can be adjusted The rotation direction and rotation speed; through the above several adjustment methods, the multi-angle adjustment degree of milling head processing, the telescopic positioning of the milling head and the multi-height adjustment of the milling head lifting are realized, which reduces the limitation of the connection of the milling head;

(3) The operation of moving and rotating the column of the milling machine is simplified, and the precision of the rotation is high, which improves the construction efficiency and construction accuracy; The movement in the first axis is to connect the horizontal screw feeder seat and the column screw feeder device by moving the rotary connector and realize the rotation of the column; by using the dovetail guide block and the dovetail groove to cooperate with the installation method, the two axial The upper movement is guided, and the corresponding connection between the screw column and the sliding block thread is used as the means of driving the movement. When the screw column is rotated when moving, the sliding block can generate relative movement through the screw thread of the screw column, not only the installation It is convenient, and the moving stroke is stable, and it is not easy to shake, which simplifies the operation of the column movement of the milling machine; by setting the moving rotary connector, the electric rotary plate is used to drive the column to rotate axially, and the angular velocity of the electric rotary plate is uniform, so when adjusting The angle of rotation can be accurately controlled only by controlling the rotation time. The electric rotating disk used in the utility model is a conventional electric rotating disk on the market. Its structure and control are all existing technologies, and will not be repeated here.

To sum up, the utility model is small in size and easy to carry. It can not only adjust the processing angle 360° in the X-axis and Z-axis directions, adjust the direction of the milling head, but also adjust the telescopic length of the milling head, reducing the limitation of the connection of the milling head. , to meet the working requirements of the narrow processing area, make the use of the milling machine more convenient, improve the efficiency of milling work, and simplify the operation of the movement and rotation of the column of the milling machine, and the rotation accuracy is high, improving the construction efficiency and construction accuracy.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is a structural schematic diagram of a rotating and positioning hoop device;

Fig. 3 is a schematic structural view of the positioning disc;

Fig. 4 is a structural schematic diagram of a hoop connector;

Figure 5 is a schematic diagram of the structure of the connecting shaft

Fig. 6 is the structural representation of slider;

Fig. 7 is the right side view of slider;

Figure 8 is a structural schematic diagram of the cooperating installation of the column and the slider

Figure 9 is a schematic structural view of the base;

Fig. 10 is a schematic structural view of the column rotation mounting platform.

The marks in the drawings are: 1-base, 2-column, 3-transverse screw feed device, 4-slider, 5-rotary positioning hoop device, 6-milling head, 7-positioning plate, 8-holding Hoop connector, 9-connecting shaft, 10-, positioning installation chassis, 11-rotating mounting plate, 12-hoop base, 13-hoop splint, 14-hoop hole, 15-column connecting shaft, 16- Bolt chute, 17-screw mounting hole, 18-dovetail mounting groove, 19-lift shaft, 20-rack, 21-dovetail mounting block, 22-bottom sliding disc, 23-electric rotating disc, 24-guide plate, 25 - Upright connection plate.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for limiting the utility model.

Example. The electric universal milling and drilling device with 360-degree rotation and positioning of the milling head, as shown in Figures 1 to 10, includes a base 1, and a column 2 is arranged above the base 1. The top of the knife seat 3 is provided with a column rotation installation platform, and the column rotation installation platform includes a mobile rotary connector that is movably connected with the horizontal screw rod feed seat 3, and a column screw feed device is arranged above the mobile rotary connector, and the column screw feed The knife device is fixedly connected with the column 2; a slider 4 is provided on one side of the column 2, and a rotary milling head device is provided on the slider 4, and the rotary milling head device includes a rotary positioning hoop device arranged on the slider 4 5 and the milling head 6, the milling head 6 is connected with the slider 4 through the rotating and positioning hoop device 5; the rotating and positioning hoop device 5 includes a positioning disc 7, a hoop connector 8 and a connecting shaft 9; the connecting shaft Part 9 is connected with positioning plate 7 through hoop connector 8; The seat 12 and the hoop splint 13 are respectively provided with semicircular hoop holes 14 corresponding in shape, the connecting shaft 9 is arranged in the hoop hole 14, and the hoop base 12 is connected with the rotating mounting plate 11 by bolts; The connecting shaft member 9 includes a columnar connecting shaft 15, and one end of the columnar connecting shaft 15 is connected to the milling head 6 through a flange connecting piece.

The positioning plate 7 includes a positioning mounting chassis 10, a rotating mounting plate 11 is arranged above the positioning mounting chassis 10, a T-shaped sliding bolt is arranged in the positioning mounting chassis 10, and the rotating mounting plate 11 is connected with the positioning mounting chassis 10 through a T-shaped sliding bolt. ; The positioning installation chassis 10 is provided with a bolt chute 16, and the bottom of the bolt chute 16 is provided with a bolt installation port, and the T-shaped sliding bolt is located in the bolt chute 16, and a group of screws are also provided in the positioning installation chassis 10 Mounting holes 17, four positioning grooves are evenly arranged on the eaves of the outer side wall of the positioning installation chassis 10, and scales are provided on the outer wall of the positioning installation chassis 10; four positioning protrusion balls are arranged below the rotating mounting plate 11, and the positioning protrusion balls are aligned with the positioning protrusions. The positions of the positioning grooves are aligned, and the radius of the positioning protruding ball is less than or equal to the radius of the positioning groove; the milling head 6 includes a rotating motor, and a milling cutter installation port is arranged below the rotating motor, and the rotating motor is connected to the flange connecting piece through bolts.

The column 2 is provided with a dovetail installation groove 18, and one side of the column 2 is provided with a lifting shaft 19, and one end of the lifting shaft 19 is provided with a wrench jack, and one side of the column 2 is also provided with a motor switch, and the motor switch is connected to the milling head 6 through a wire. connection; one side of the slider 4 is provided with a dovetail mounting block 21 and a rack 20, and the dovetail mounting block 21 corresponds to the shape of the dovetail mounting groove 18; the other side of the slider 4 is provided with a mounting surface, and the mounting surface is provided with There are positioning bumps, and mounting screw holes are arranged on the positioning bumps.

The moving rotary connector includes a bottom sliding disc 22 connected to the horizontal screw feed seat 3, and the bottom sliding disc 22 is connected with the column screw feed device through an electric rotating disc 23; The surface is provided with a dovetail guide block A, and the lower surface of the bottom sliding plate 22 is provided with a dovetail groove A corresponding to the shape of the dovetail guide block A, and the bottom sliding plate 22 is matched with the dovetail groove A and the dovetail guide block A. The seat 3 is movably connected; the horizontal screw feed seat 3 is provided with a screw column, and the bottom of the bottom sliding plate 22 is provided with a sliding block correspondingly connected to the thread of the screw column; the column screw feed device includes an electric The guide plate 24 connected by the rotating disk 23, the upper surface of the guide plate 24 is provided with a dovetail guide block B, and the column screw rod feeding device also includes a column connecting plate 25, the upper surface of the column connecting plate 25 is provided with screw holes, and the lower surface of the column connecting plate 25 The surface is provided with a dovetail groove B corresponding to the shape of the dovetail guide block B, and the column connecting plate 25 is movably connected with the guide plate 24 through the matching installation of the dovetail groove B and the dovetail guide block B: a screw column is provided under the column connecting plate 25 , The guide plate 24 is provided with a sliding block correspondingly connected with the screw thread.

Working principle: when the utility model is in use, select a milling cutter of the corresponding size and a milling head 6 of the corresponding power according to the workpiece to be processed, and install the milling cutter into the milling cutter installation port on the milling head 6; install the dovetail mounting block 21 Align with the position of the dovetail installation groove 18, insert the slider 4 into the column 2, insert the wrench rod into the wrench socket, and rotate the lifting shaft 19 to drive the rack 20 on the slider 4 to move, and adjust the position of the slider 4; The rotating and positioning hoop device 5 is installed on the mounting surface of the slider 4, and the screw is used to rotate and locate the hoop device 5 for fixed installation; the connecting shaft 9 is connected to the milling head 6 through a flange connecting piece arranged at one end of the columnar connecting shaft 15, The hoop base 12 of the hoop connector 8 is connected with the positioning plate 7 by bolts, and after the columnar connecting shaft 15 is put into the semicircular hoop hole 14 on one side of the hoop base 12, the hoop splint 13 is put into place. The semicircular hoop hole 14 on the side clamps the columnar connecting shaft 15, aligns the hoop base 12 with the hoop splint 13, and uses the bolts connecting the hoop base 12 and the hoop splint 13 in the process of tightening , so that the hoop base 12 and the hoop splint 13 lock the columnar connecting shaft 15 to complete the connection; by setting the horizontal screw feed seat 3 and the column screw feed device, the column 2 can be moved in two axial directions. The movement of the horizontal screw feed tool seat 3 and the column screw screw feed device is connected by moving the rotary connector to realize the rotation of the column 2; by using the dovetail guide block and the dovetail groove to cooperate with the installation method, the two axial The movement is guided, and the corresponding connection between the screw column and the sliding block thread is adopted as the means of driving the movement. When the horizontal screw feed seat 3 moves in the direction, the screw post set in the horizontal screw feed seat 3 , the bottom sliding plate 22 is driven by the relative displacement of the sliding block located at the bottom and the thread of the screw column; when the column screw feed device moves in the direction, the screw column located at the bottom of the column connecting plate 25 is rotated, and the column is connected. The plate is driven by the relative displacement of the sliding block set on the guide plate 24 and the thread of the screw column; and the movement stroke is stable, and it is not easy to shake, which simplifies the operation of the column movement of the milling machine; 23 Drive the column 2 to rotate axially, and the angle of rotation can be precisely controlled by controlling the rotation time during adjustment; according to the position of the workpiece to be processed, select the installation position of the utility model, fix the base 1, and turn on the power. Turn on the switch, adjust the rotation direction and speed of the milling cutter through the motor switch; turn off the power after the adjustment is completed, and adjust the angle of the milling head 6 according to the shape of the workpiece to be processed; after the adjustment is completed, turn on the power to quickly process the workpiece.

Claims (10)

1. The electric universal milling and drilling device with 360-degree rotation and positioning of the milling head is characterized in that it includes a base (1), a column (2) is arranged above the base (1), and the base includes a horizontal screw feed seat (3) , the top of the horizontal screw feed seat (3) is provided with a column rotating mounting platform, the column rotating mounting table includes a mobile rotary connector that is movably connected with the horizontal screw feed seat (3), and a column wire is arranged above the mobile rotary connector. Rod feeding device, the column screw feeding device is fixedly connected with the column (2); one side of the column (2) is provided with a slider (4), and the slider (4) is provided with a rotary milling head device, the The rotary milling head device includes a rotary positioning hoop device (5) and a milling head (6) arranged on the slider (4), and the milling head (6) is connected to the slider (4) through the rotary positioning hoop device (5) ; The rotary positioning hoop device (5) includes a positioning plate (7), a hoop connector (8) and a connecting shaft (9); the connecting shaft (9) is connected to the hoop connector (8) The positioning disc (7) is connected; the hoop connector (8) includes a hoop base (12) and a hoop splint (13), and the hoop splint (13) is connected to the hoop base (12) by bolts, The hoop base (12) and the hoop splint (13) are respectively provided with semicircular hoop holes (14) with corresponding shapes, and the connecting shaft (9) is arranged in the hoop holes (14). The seat (12) is connected to the rotating mounting plate (11) through bolts; the connecting shaft (9) includes a columnar connecting shaft (15), and one end of the cylindrical connecting shaft (15) is connected to the milling head (6) through a flange connecting piece . 2. The milling head 360-degree rotating positioning electric universal milling and drilling device according to claim 1, characterized in that: the positioning plate (7) includes a positioning installation chassis (10), and a positioning installation chassis (10) is provided with The rotating mounting plate (11) is provided with T-shaped sliding bolts in the positioning mounting chassis (10), and the rotating mounting plate (11) is connected with the positioning mounting chassis (10) by T-shaped sliding bolts. 3. The milling head 360-degree rotating positioning electric universal milling and drilling device according to claim 2, characterized in that: the positioning installation chassis (10) is provided with a bolt chute (16), and the bolt chute (16) Bolt mounting openings are provided at the bottom, and the T-shaped sliding bolts are arranged in the bolt chute (16), and a group of screw mounting holes (17) are also provided in the positioning mounting chassis (10), and the positioning mounting chassis (10) outer wall eaves Four positioning grooves are evenly arranged on the top, and scales are arranged on the outer wall of the positioning installation chassis (10). 4. The milling head 360-degree rotating positioning electric universal milling and drilling device according to claim 3, characterized in that: four positioning balls are arranged under the rotating mounting plate (11), and the positioning balls and positioning grooves The positions are aligned, and the radius of the positioning protrusion is less than or equal to the radius of the positioning groove. 5. The milling head 360-degree rotating positioning electric universal milling and drilling device according to claim 1, characterized in that: the milling head (6) includes a rotating motor, and a milling cutter installation port is provided under the rotating motor, and the rotating motor passes through The bolts are connected with the flange connection pieces. 6. The milling head 360-degree rotating positioning electric universal milling and drilling device according to claim 1, characterized in that: the column (2) is provided with a dovetail installation groove (18), and one side of the column (2) is provided with Lifting rotating shaft (19), lifting rotating shaft (19) one end is provided with spanner jack, and column (2) one side is also provided with motor switch, and motor switch is connected with milling head (6) by lead. 7. The milling head 360-degree rotating positioning electric universal milling and drilling device according to claim 6, characterized in that: a dovetail mounting block (21) and a rack (20) are provided on one side of the slider (4), The dovetail mounting block (21) corresponds to the shape of the dovetail mounting groove (18); the other side of the slider (4) is provided with a mounting surface, and the mounting surface is provided with a positioning projection, and the positioning projection is provided with a mounting screw hole . 8. The electric universal milling and drilling device for 360-degree rotation positioning of the milling head according to claim 1, characterized in that: the moving and rotating connection part includes a bottom sliding disc (22) connected with the horizontal screw feed seat (3) ), the bottom sliding disc (22) is connected with the column screw mandrel feeding device by the electric rotating disc (23). 9. The milling head 360-degree rotating positioning electric universal milling and drilling device according to claim 8, characterized in that: the upper surface of the horizontal screw feed seat (3) is provided with a dovetail guide block A, and the bottom sliding plate ( 22) The lower surface is provided with a dovetail groove A corresponding to the shape of the dovetail guide block A, and the bottom sliding plate (22) is movably connected with the horizontal screw feed seat (3) through the matching installation of the dovetail groove A and the dovetail guide block A; A screw post is provided in the horizontal screw feed seat (3), and a sliding block correspondingly connected to the thread of the screw post is provided at the bottom of the bottom sliding plate (22). 10. The milling head 360-degree rotating positioning electric universal milling and drilling device according to claim 8, characterized in that: the column screw feeding device includes a guide plate (24) connected with the electric rotating disk (23), The upper surface of the guide plate (24) is provided with a dovetail guide block B, and the column screw feed device also includes a column connecting plate (25), the upper surface of the column connecting plate (25) is provided with screw holes, and the lower surface of the column connecting plate (25) A dovetail groove B corresponding to the shape of the dovetail guide block B is provided, and the column connecting plate (25) is movably connected with the guide plate (24) through the matching installation of the dovetail groove B and the dovetail guide block B: the bottom of the column connecting plate (25) A screw column is provided, and a slide block correspondingly connected with the thread of the screw column is provided on the guide plate (24).