CN118204542A - Plane milling device with accurate positioning function - Google Patents

Abstract

A plane milling device with precise positioning, the invention relates to the field of mechanical processing technology; a bevel fixing mechanism is arranged on one side of the upper surface of a mounting table; a mounting frame is arranged on the other side of the upper surface of the mounting table, a movable plate is arranged inside the mounting frame, and the front and rear sides of the movable plate are respectively screwed to the inner walls of the front and rear sides of the mounting frame through a shaft rod; a limiting mechanism is arranged on the upper side wall of the mounting frame, and the limiting mechanism is connected to the movable plate; a positioning plate is arranged on one side of the movable plate, and a plurality of threaded holes are equidistantly arranged on the side wall of the positioning plate away from the movable plate from front to back, a positioning block is screwed on the positioning plate through a threaded rod, and the threaded rod is screwed in cooperation with the threaded hole; an adjusting mechanism is arranged on the movable plate, and the adjusting mechanism is connected to the positioning plate; it is convenient to position the parts, and at the same time, it is also possible to support the parts with inclined surfaces, so as to facilitate the milling of the parts and improve the effect of the plane milling of the parts.

Description

A plane milling device with precise positioning

Technical Field

The invention relates to the technical field of mechanical processing, and in particular to a plane milling device with precise positioning.

Background technique

Milling refers to the use of a rotating multi-blade tool to cut workpieces. It is a high-precision processing method. During operation, the tool is the main motion and the workpiece is the feed motion. The workpiece can also be fixed, but the rotating tool must still move at this time. The machine tools used for milling include horizontal milling machines or vertical milling machines, as well as large gantry milling machines. These machine tools can be ordinary machine tools or CNC machine tools. When plane milling is performed on parts, a plane milling device is required. The parts need to be fixed in advance inside the plane milling device. Most of them use magnetic adsorption to fix the parts. The plane milling device with this fixing method is fast and portable when fixing parts, but it cannot be accurately positioned, which reduces the effect of plane milling of parts.

Summary of the invention

The purpose of the present invention is to address the defects and shortcomings of the prior art and to provide a plane milling device with a reasonable design, easy to use and precise positioning, which can facilitate the positioning of parts and can also support parts with inclined surfaces, thereby facilitating the milling of parts and improving the effect of plane milling of parts.

To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: it comprises a control console body, a mounting platform, a fixing frame and a milling head, wherein the mounting platform is slidably arranged on the upper side of the control console body, and a fixing frame is arranged on the rear side of the mounting platform, and the fixing frame is arranged in an inverted "L" shape, and the vertical plate of the fixing frame is fixed on the control console body, and the milling head is fixed on the horizontal plate of the fixing frame, and the milling head is suspended on the upper side of the mounting platform; it also comprises:

An inclined plane fixing mechanism, wherein the inclined plane fixing mechanism is arranged on one side of the upper surface of the mounting platform;

A mounting frame, the mounting frame being arranged on the other side of the upper surface of the mounting platform, a movable plate being arranged inside the mounting frame, and the front and rear sides of the movable plate being respectively screwed to the inner walls of the front and rear sides of the mounting frame through shaft rods;

A limiting mechanism, wherein the limiting mechanism is arranged on the upper side wall of the installation frame and is connected to the movable plate;

A positioning plate, wherein the positioning plate is arranged on one side of the movable plate, and a plurality of threaded holes are arranged on a side wall of the positioning plate away from the movable plate at equal distances from the front to the back, and a positioning block is screwed on the positioning plate through a threaded rod, and the threaded rod is screwed in cooperation with the threaded hole;

An adjusting mechanism, wherein the adjusting mechanism is arranged on the movable plate and connected to the positioning plate;

Through the above technical scheme, when there is a groove on one side of the part, a positioning block of the corresponding shape is selected, and it is screwed to the corresponding threaded hole through a threaded rod, so that it is positioned on the positioning plate, and then the positioning plate is driven to move to a suitable height through an adjustment mechanism according to the height of the groove. When positioning, the groove on the part can be clamped on the positioning block, so that positioning can be performed quickly and accurately, thereby improving processing efficiency. When one side of the part is inclined, the inclined surface of the part is supported by a bevel fixing mechanism, and the side of the part to be milled is in a horizontal plane, thereby improving the stability of the part during milling. When the side wall of the part is flat, the limiting mechanism is released, so that the limiting mechanism is separated from the movable plate, and the movable plate is rotated so that the other side of the movable plate is turned to the center side of the mounting table. At this time, the part can be pressed against the side wall of the movable plate.

As a further improvement of the present invention, the inclined plane fixing mechanism comprises:

A fixed plate, the fixed plate is fixed to one side of the upper surface of the mounting table, and a sliding block is hingedly connected to the fixed plate;

An inclined support plate, wherein the inclined support plate is suspended on the upper side of the mounting platform, and a slide rail is fixed symmetrically on the lower side wall of the inclined support plate, and a slide block is slidably arranged in the corresponding slide rail;

There are two adjusting blocks, which are inserted symmetrically in front and back and are screwed to the lower side of the inclined support plate through a hinge shaft, and the lower side of the adjusting block is slidably arranged in a slide groove on the upper surface of the mounting table;

An adjusting screw rod, wherein the adjusting screw rod is screwed into the mounting platform via a bearing, an adjusting strip is screwed into the adjusting screw rod via a thread, the adjusting strip is movably arranged in the mounting platform, and the adjusting strip is fixedly connected to the lower ends of the front and rear adjusting blocks;

A fixed motor, wherein the fixed motor is embedded and fixed on one side of the mounting platform, the fixed motor is connected to an external power source, and an output shaft thereof is fixedly connected to one end of the adjusting screw rod;

Through the above technical solution, the fixed motor is started, the fixed motor drives the adjusting screw to rotate, the adjusting screw drives the adjusting bar to move, the adjusting bar drives the adjusting block to move, thereby driving one side of the inclined support plate to move left and right on the mounting table, so that the sliding block slides in the slide rail, the position of the sliding block changes, thereby changing the position of the inclined support plate above the fixed plate, and then changing the angle between the inclined support plate and the mounting table until the inclined support plate reaches a suitable position.

As a further improvement of the present invention, the front and rear sides of the inclined support plate are provided with extension plates, and a plug plate is fixed on a side wall of the extension plate adjacent to the inclined support plate, the plug plate is inserted in the inclined support plate, and a rotating rod is inserted on one side of the center of the inclined support plate through a bearing, and a driving gear is sleeved and fixed on one end of the rotating rod located in the inclined support plate, and the driving gear is located in a groove between the two plug plates, and racks are meshed on the upper and lower sides of the driving gear, and the racks are respectively fixed on the plug plates on both sides;

Through the above technical solution, according to the size of the part and the length of the inclined surface, the driving gear is driven to rotate by the rotating rod, and the driving gear moves to both sides through the racks on the upper and lower sides, so that the plug plates on both sides move to both sides, and the plug plates drive the extension plates to move outward until the extension plates on both sides move to the appropriate position.

As a further improvement of the present invention, a limiting block is fixed on one side of the plug plate, and the limiting block is slidably arranged in a sliding groove on the inner wall of the inclined support plate, thereby preventing the plug plate from sliding off the inclined support plate.

As a further improvement of the present invention, the lower side of the mounting frame is slidably arranged in a slide groove on the mounting platform through a slider; a movable plate is movably arranged in the mounting platform, the upper side of the movable plate is fixedly connected to the lower side of the slider, and an adjusting screw is screwed symmetrically on the movable plate through threads, and both ends of the adjusting screw are respectively screwed on the mounting platform through bearings, and the two adjusting screws are connected through a synchronous wheel transmission assembly, and a twisting disk is fixed on one end of one of the adjusting screws, and the twisting disk is suspended on the outer side of the mounting platform;

Through the above technical scheme, after the inclined part is positioned by the inclined fixing mechanism, the adjusting screw connected to it can be driven to rotate by turning the disk, and the adjusting screw drives another adjusting screw to rotate through the synchronous wheel transmission assembly. The two adjusting screws simultaneously drive the movable plate to move, and the movable plate drives the installation frame to move through the slider, and the installation frame drives the movable plate to move until it contacts the other side of the part, thereby facilitating further positioning of the part and improving stability.

As a further improvement of the present invention, the limiting mechanism comprises:

Limit rods, there are several limit rods, and they are inserted into the upper side of the installation frame at equal distances, the upper and lower ends of the limit rods are exposed on the upper and lower sides of the upper side of the installation frame respectively, and the upper and lower side walls of the movable plate are evenly provided with several limit holes, which are matched with the lower ends of the limit rods;

The limiting plates are multiple and are equidistantly embedded in the cylindrical groove on the upper side of the installation frame from front to back. The limiting plates are sleeved one by one and fixed on one end of the limiting rod located inside the installation frame. The upper surface of the limiting plates is fixed with a resistance spring, and the upper end of the resistance spring is fixed on the inner top wall of the cylindrical groove;

A pull rod, the pull rod is suspended on the upper side of the installation frame, and the pull rod is fixedly connected to the upper end of the limit rod;

Through the above technical solution, when the movable plate needs to be rotated, the pull rod is pulled upward, and the pull rod drives the limit rod to move upward at the same time, so that the limit rod is separated from the limit hole on the movable plate. At this time, the limit rod drives the limit plate to move upward, so that the resistance spring is compressed. After the rotation is completed, the pull rod is released, and the limit plate moves downward under the push of the resistance spring. The limit plate drives the limit rod to move downward, so that it is inserted into the corresponding limit hole, thereby limiting the movable plate.

As a further improvement of the present invention, the adjustment mechanism comprises:

An adjustment plate, wherein the adjustment plate is movably arranged in the movable plate, and a plurality of connecting plates are equidistantly fixed on one side wall of the adjustment plate, and the connecting plates are fixed on the positioning plate after passing through the slide groove on one side wall of the movable plate;

There are two adjustment racks, and both are arranged in a "T" shape. The adjustment rack slides to arrange the movable plate away from the slide groove on one side wall of the positioning plate. The support rod on one side of the adjustment rack passes through the slide groove on the side wall of the movable plate and is fixed on the side wall of the connecting plate.

Pulling racks, there are two pulling racks, and both are set in a "U" shape. The support rods on the front and rear sides of the pulling rack pass through the support plate on the other side of the adjustment rack and are inserted in cooperation with the circular groove on the side wall of the movable plate;

The return springs are four in number and are sleeved one by one on the support rods at the front and rear sides of the pulling frame. The return springs are located in the support plate of the adjusting frame, and the two ends of the return springs are fixedly connected to the pulling frame and the support plate of the adjusting frame respectively;

Through the above technical solution, when the positioning plate needs to be adjusted, the pulling frame is pulled outward to separate the pulling frame from the movable plate, and then the adjusting frame is driven to move up and down by the pulling frame. The adjusting frame drives the positioning plate to move up and down through the connecting plate until the positioning plate moves to a suitable position, and then the pulling frame is released, and the reset spring drives the pulling frame to move to one side of the movable plate, so that the pulling frame is inserted into the corresponding circular groove.

Compared with the prior art, the present invention has the following beneficial effects:

1. An inclined surface fixing mechanism is provided to support parts with inclined surfaces, making it easier to mill parts and improving the effect of plane milling of parts.

2. A positioning plate and a positioning block are provided, and the positioning block and the positioning plate can be adjusted by an adjusting mechanism, so as to facilitate the positioning of the parts;

3. The movable plate outside the positioning plate can be limited by a limiting mechanism. During use, the side corresponding to the movable plate can be selected according to the shape of the side wall of the part, which improves the portability during positioning.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the present invention.

FIG. 2 is an exploded view of the mounting platform, the inclined plane fixing mechanism and the mounting frame of the present invention.

FIG3 is an enlarged view of portion A in FIG2 .

FIG. 4 is an exploded view of the inclined plane fixing mechanism, the extension plate and the insert plate in the present invention.

FIG. 5 is an enlarged view of portion B in FIG. 4 .

FIG. 6 is an exploded view of the adjustment mechanism and the movable plate in the present invention.

FIG. 7 is an enlarged view of portion C in FIG. 6 .

Description of reference numerals:

Control console body 1, mounting table 2, fixing frame 3, milling head 4, inclined fixing mechanism 5, fixing plate 5-1, sliding block 5-2, inclined support plate 5-3, slide rail 5-4, adjusting block 5-5, adjusting screw rod 5-6, adjusting bar 5-7, fixing motor 5-8, mounting frame 6, movable plate 7, threaded hole 7-1, limiting hole 7-2, limiting mechanism 8, limiting rod 8-1, limiting disk 8-2, resisting spring 8-3, pulling rod 8-4, positioning plate 9, positioning block 10, adjusting mechanism 11, adjusting plate 11-1, connecting plate 11-2, adjusting frame 11-3, pulling frame 11-4, reset spring 11-5, extension plate 12, plug plate 13, rotating rod 14, driving gear 15, rack 16, limiting block 17, moving plate 18, adjusting screw rod 19, twisting disk 20.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Embodiment 1:

As shown in Fig. 1 to Fig. 7, this embodiment comprises a control console body 1, a mounting platform 2, a fixing frame 3 and a milling head 4. The mounting platform 2 is slidably arranged on the upper side of the control console body 1, and the fixing frame 3 is arranged on the rear side of the mounting platform 2. The fixing frame 3 is arranged in an inverted "L" shape. The vertical plate of the fixing frame 3 is welded and fixed on the control console body 1. The milling head 4 is fixed on the horizontal plate of the fixing frame 3 by bolts. The milling head 4 is suspended on the upper side of the mounting platform 2; it also comprises:

An inclined plane fixing mechanism 5, wherein the inclined plane fixing mechanism 5 is arranged on one side of the upper surface of the mounting platform 2;

The mounting frame 6 is arranged on the right side of the upper surface of the mounting platform 2, and a movable plate 7 is arranged inside the mounting frame 6, and the front and rear sides of the movable plate 7 are respectively screwed to the inner walls of the front and rear sides of the mounting frame 6 through shafts;

The lower side of the mounting frame 6 is slidably arranged in the slide groove on the mounting platform 2 through a slider; a movable plate 18 is movably arranged in the mounting platform 2, and the upper side of the movable plate 18 is fixedly connected to the lower side of the slider, and an adjusting screw 19 is screwed symmetrically on the front and rear sides of the movable plate 18 through threads, and both ends of the adjusting screw 19 are screwed on the mounting platform 2 through bearings, and the two adjusting screws 19 are connected through a synchronous wheel transmission assembly, and a twisting disk 20 is fixed on the right end of the front adjusting screw 19, and the twisting disk 20 is suspended on the outer side of the mounting platform 2;

A limiting mechanism 8, wherein the limiting mechanism 8 is arranged on the upper side wall of the installation frame 6, and the limiting mechanism 8 is connected to the movable plate 7;

A positioning plate 9, wherein the positioning plate 9 is arranged on the left side of the movable plate 7, and a plurality of threaded holes 7-1 are provided on a side wall of the positioning plate 9 away from the movable plate 7 at equal intervals from front to back, and a positioning block 10 is screwed on the positioning plate 9 through a threaded rod, and the threaded rod is screwed in cooperation with the threaded hole 7-1;

The adjusting mechanism 11 is arranged on the movable plate 7 , and the adjusting mechanism 11 is connected to the positioning plate 9 .

Embodiment 2:

Referring to FIGS. 1-2 and 4-5 , based on Embodiment 1, the inclined plane fixing mechanism 5 comprises:

A fixed plate 5-1, wherein the fixed plate 5-1 is fixed to the left side of the upper surface of the mounting platform 2 by bolts, and a sliding block 5-2 is hingedly connected to the fixed plate 5-1;

An inclined support plate 5-3, wherein the inclined support plate 5-3 is suspended on the upper side of the mounting platform 2, and a slide rail 5-4 is welded and fixed symmetrically on the lower side wall of the inclined support plate 5-3, and the sliding block 5-2 is slidably arranged in the corresponding slide rail 5-4;

Both the front and rear sides of the inclined support plate 5-3 are provided with an extension plate 12, and a plug plate 13 is welded and fixed on a side wall of the extension plate 12 adjacent to the inclined support plate 5-3, and the plug plate 13 is inserted in the inclined support plate 5-3. A rotating rod 14 is screwed and inserted on one side of the center of the inclined support plate 5-3 through a bearing. A driving gear 15 is sleeved and welded and fixed on one end of the rotating rod 14 located in the inclined support plate 5-3. The driving gear 15 is located in the groove between the two plug plates 13. The upper and lower sides of the driving gear 15 are meshed with racks 16, and the racks 16 are respectively welded and fixed on the plug plates 13 on both sides. A limiting block 17 is welded and fixed on one side of the plug plate 13, and the limiting block 17 is slidably set in the slide groove on the inner wall of the inclined support plate 5-3; it can prevent the plug plate 13 from sliding out of the inclined support plate 5-3;

Adjustment blocks 5-5, there are two adjustment blocks 5-5, which are symmetrically inserted in front and back and screwed to the lower side of the inclined support plate 5-3 through a hinge shaft, and the lower side of the adjustment block 5-5 is slidably set in the slide groove on the upper surface of the mounting platform 2;

An adjusting screw rod 5-6, wherein the adjusting screw rod 5-6 is screwed in the mounting platform 2 through a bearing, and an adjusting plate 11-15-7 is screwed in the adjusting screw rod 5-6 through a thread, and the adjusting plate 11-15-7 is movably arranged in the mounting platform 2, and the adjusting plate 11-15-7 is fixedly connected to the lower ends of the front and rear adjusting blocks 5-5;

The fixed motor 5-8 is embedded and fixed on one side of the mounting platform 2. The fixed motor 5-8 is connected to an external power source, and its output shaft is fixedly connected to one end of the adjusting screw rod 5-6.

Embodiment 3:

Referring to FIGS. 1-3 , based on Embodiment 1, the limiting mechanism 8 comprises:

Limit rods 8-1, there are several limit rods 8-1, and they are inserted into the upper side of the installation frame 6 at equal distances, and the upper and lower ends of the limit rods 8-1 are exposed on the upper and lower sides of the upper side of the installation frame 6 respectively, and several limit holes 7-2 are opened at equal distances on the upper and lower side walls of the movable plate 7, and the limit holes 7-2 are inserted in cooperation with the lower ends of the limit rods 8-1;

The limiting disks 8-2 are multiple and are equidistantly embedded in the cylindrical groove on the upper side of the installation frame 6 from front to back. The limiting disks 8-2 are sleeved one by one and welded to one end of the limiting rod 8-1 located inside the installation frame 6. The upper surfaces of the limiting disks 8-2 are welded to the resistance springs 8-3, and the upper ends of the resistance springs 8-3 are welded to the inner top wall of the cylindrical groove.

The pull rod 8-4 is suspended on the upper side of the installation frame 6, and the pull rod 8-4 is welded and fixed to the upper end of the limit rod 8-1.

Embodiment 4:

Referring to FIG. 6 and FIG. 7 , based on Example 1, the adjustment mechanism 11 includes:

An adjustment plate 11-1, wherein the adjustment plate 11-1 is movably arranged in the movable plate 7, and a plurality of connecting plates 11-2 are equidistantly welded and fixed on one side wall of the adjustment plate 11-1, and the connecting plate 11-2 passes through a slide groove on one side wall of the movable plate 7 and is welded and fixed on the positioning plate 9;

Adjustment frame 11-3, there are two adjustment frames 11-3, and both are set in a "T" shape. The adjustment frame 11-3 slides to set the movable plate 7 away from the slide groove on the side wall of the positioning plate 9. After the support rod on one side of the adjustment frame 11-3 passes through the slide groove on the side wall of the movable plate 7, it is welded and fixed to the side wall of the connecting plate 11-2;

Pulling frame 11-4, there are two pulling frames 11-4, and both are set in a "U" shape. The support rods on the front and rear sides of the pulling frame 11-4 pass through the support plate on the other side of the adjustment frame 11-3, and are inserted in cooperation with the circular groove on the side wall of the movable plate 7;

The reset spring 11-5 is four in number and is correspondingly mounted on the support rods on the front and rear sides of the pulling frame 11-4. The reset spring 11-5 is located in the support plate of the adjusting frame 11-3, and the two ends of the reset spring 11-5 are respectively welded and fixed to the support plates of the pulling frame 11-4 and the adjusting frame 11-3.

When using the present invention, when there is a groove on one side of the part, select a positioning block 10 of the corresponding shape, screw it to the corresponding threaded hole 7-1 through the threaded rod, so as to position it on the positioning plate 9, and then pull the pulling frame 11-4 outward according to the height of the groove, so that the pulling frame 11-4 is separated from the movable plate 7, and then the adjusting frame 11-3 is driven up and down by the pulling frame 11-4, and the adjusting frame 11-3 drives the positioning plate 9 up and down through the connecting plate 11-2 until the positioning plate 9 moves to a suitable position, and then release the pulling frame 11-4, and the reset spring 11-5 drives the pulling frame 11-4 to move to one side of the movable plate 7, so that the pulling frame 11-4 is inserted into the corresponding circular groove. When positioning, the groove on the part can be clamped on the positioning block 10, so that positioning can be performed quickly and accurately, thereby improving processing efficiency.

When one side of the part is inclined, the fixed motor 5-8 is started, and the fixed motor 5-8 drives the adjusting screw 5-6 to rotate, and the adjusting screw 5-6 drives the adjusting plate 11-15-7 to move, and the adjusting plate 11-15-7 drives the adjusting block 5-5 to move, thereby driving one side of the inclined support plate 5-3 to move left and right on the mounting table 2, so that the sliding block 5-2 slides in the slide rail 5-4, and the position of the sliding block 5-2 changes, thereby changing the position of the inclined support plate 5-3 above the fixed plate 5-1, and then changing the angle between the inclined support plate 5-3 and the mounting table 2, until the inclined support plate 5-3 reaches a suitable position, and makes the side of the part to be milled in a horizontal plane, which improves the stability of the part during milling, and can also be adjusted according to the size and inclination of the part. The length of the inclined plane is determined by rotating the driving gear 15 through the rotating rod 14, and the driving gear 15 moves to both sides through the racks 16 on the upper and lower sides, so that the plug plates 13 on both sides move to both sides, and the plug plates 13 drive the extension plates 12 to move outward until the extension plates 12 on both sides move to a suitable position. After the inclined parts are positioned by the inclined plane fixing mechanism 5, the adjusting screw 19 connected thereto can be driven to rotate by twisting the disk 20, and the adjusting screw 19 drives another adjusting screw 19 to rotate through the synchronous wheel transmission assembly. The two adjusting screws 19 simultaneously drive the moving plate 18 to move, and the moving plate 18 drives the installation frame 6 to move through the slider, and the installation frame 6 drives the movable plate 7 to move to contact the other side of the part, so as to facilitate further positioning of the part and improve stability.

When the side wall of the part is a plane, when the movable plate 7 needs to be rotated, the pull rod 8-4 is pulled upward, and the pull rod 8-4 drives the limit rod 8-1 to move upward at the same time, so that the limit rod 8-1 is separated from the limit hole 7-2 on the movable plate 7. At this time, the limit rod 8-1 drives the limit plate 8-2 to move upward, so that the resistance spring 8-3 is compressed, and the movable plate 7 is rotated so that the other side of the movable plate 7 is turned to the center side of the mounting table 2. At this time, the part can be resisted against the side wall of the movable plate 7. After the rotation is completed, the pull rod 8-4 is released, and the limit plate 8-2 moves downward under the push of the resistance spring 8-3. The limit plate 8-2 drives the limit rod 8-1 to move downward, so that it is inserted into the corresponding limit hole 7-2, thereby limiting the movable plate 7.

Compared with the prior art, the beneficial effects of this specific implementation are as follows:

1. An inclined surface fixing mechanism 5 is provided to support parts with inclined surfaces, making it easier to mill the parts and improving the effect of plane milling of the parts.

2. A positioning plate 9 and a positioning block 10 are provided, and the positioning block 10 and the positioning plate 9 can be adjusted by an adjusting mechanism 11, so as to facilitate positioning of the parts;

3. The movable plate 7 outside the positioning plate 9 can be limited by the limiting mechanism 8. During use, the side corresponding to the movable plate 7 can be selected according to the shape of the side wall of the part, which improves the portability during positioning.

The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims (7)

1. A plane milling device with precise positioning, comprising a console body (1), a mounting platform (2), a fixing frame (3) and a milling head (4), wherein the mounting platform (2) is slidably arranged on the upper side of the console body (1), the fixing frame (3) is arranged on the rear side of the mounting platform (2), the fixing frame (3) is arranged in an inverted "L" shape, the vertical plate of the fixing frame (3) is fixed on the console body (1), the horizontal plate of the fixing frame (3) is fixed with the milling head (4), and the milling head (4) is suspended on the upper side of the mounting platform (2); it is characterized in that it also comprises: An inclined plane fixing mechanism (5), wherein the inclined plane fixing mechanism (5) is arranged on one side of the upper surface of the mounting platform (2); A mounting frame (6), the mounting frame (6) being arranged on the other side of the upper surface of the mounting platform (2), a movable plate (7) being arranged inside the mounting frame (6), and the front and rear sides of the movable plate (7) being respectively screwed to the inner walls of the front and rear sides of the mounting frame (6) through shafts; A limiting mechanism (8), wherein the limiting mechanism (8) is arranged on the upper side wall of the installation frame (6), and the limiting mechanism (8) is connected to the movable plate (7); A positioning plate (9), the positioning plate (9) being arranged on one side of the movable plate (7), a plurality of threaded holes (7-1) being arranged on a side wall of the positioning plate (9) away from the movable plate (7) at equal intervals from front to back, a positioning block (10) being screwed on the positioning plate (9) via a threaded rod, and the threaded rod and the threaded hole (7-1) being screwed in cooperation; An adjusting mechanism (11), wherein the adjusting mechanism (11) is arranged on the movable plate (7), and the adjusting mechanism (11) is connected to the positioning plate (9). 2. A plane milling device with precise positioning according to claim 1, characterized in that: the inclined surface fixing mechanism (5) comprises: A fixed plate (5-1), wherein the fixed plate (5-1) is fixed to one side of the upper surface of the mounting platform (2), and a sliding block (5-2) is hingedly connected to the fixed plate (5-1); An inclined support plate (5-3), wherein the inclined support plate (5-3) is suspended on the upper side of the mounting platform (2), and slide rails (5-4) are fixed symmetrically frontward and rearward on the lower side wall of the inclined support plate (5-3), and the sliding block (5-2) is slidably arranged in the corresponding slide rail (5-4); Adjustment blocks (5-5), the number of the adjustment blocks (5-5) being two, and the adjustment blocks (5-5) being inserted symmetrically in front and back and being screwed to the lower side of the inclined support plate (5-3) through a hinge shaft, and the lower side of the adjustment block (5-5) being slidably arranged in a slide groove on the upper surface of the mounting platform (2); An adjusting screw rod (5-6), wherein the adjusting screw rod (5-6) is screwed into the mounting platform (2) via a bearing, an adjusting strip (5-7) is screwed into the adjusting screw rod (5-6) via a thread, the adjusting plate (5-7) is movably arranged in the mounting platform (2), and the adjusting strip (5-7) is fixedly connected to the lower ends of the front and rear adjusting blocks (5-5); A fixed motor (5-8) is embedded in and fixed on one side of the mounting platform (2). The fixed motor (5-8) is connected to an external power source, and its output shaft is fixedly connected to one end of the adjusting screw rod (5-6). 3. A plane milling device with precise positioning according to claim 2, characterized in that: an extension plate (12) is provided on both the front and rear sides of the inclined support plate (5-3), and a plug plate (13) is fixed on a side wall of the extension plate (12) adjacent to the inclined support plate (5-3), and the plug plate (13) is inserted in the inclined support plate (5-3), and a rotating rod (14) is inserted on one side of the center of the inclined support plate (5-3) through a bearing rotation connection, and a driving gear (15) is sleeved and fixed on one end of the rotating rod (14) located in the inclined support plate (5-3), and the driving gear (15) is located in a groove between the two plug plates (13), and the upper and lower sides of the driving gear (15) are meshed with racks (16), and the racks (16) are respectively fixed on the plug plates (13) on both sides. 4. A plane milling device with precise positioning according to claim 3, characterized in that: a limit block (17) is fixed on one side of the insert plate (13), and the limit block (17) is slidably set in a slide groove on the inner wall of the inclined support plate (5-3); it can prevent the insert plate (13) from sliding off the inclined support plate (5-3). 5. A plane milling device with precise positioning according to claim 1, characterized in that: the lower side of the mounting frame (6) is slidably arranged in a slide groove on the mounting platform (2) through a slider; a movable plate (18) is movably arranged in the mounting platform (2), the upper side of the movable plate (18) is fixedly connected to the lower side of the slider, and an adjusting screw (19) is symmetrically screwed on the movable plate (18) through threads, and both ends of the adjusting screw (19) are respectively screwed on the mounting platform (2) through bearings, and the two adjusting screws (19) are connected through a synchronous wheel transmission assembly, and a twisting disk (20) is fixed on one end of one of the adjusting screws (19), and the twisting disk (20) is suspended on the outside of the mounting platform (2). 6. The plane milling device with precise positioning according to claim 1, characterized in that: the limiting mechanism (8) comprises: A plurality of limit rods (8-1), which are inserted into the upper side of the installation frame (6) at equal intervals, and the upper and lower ends of the limit rods (8-1) are respectively exposed on the upper and lower sides of the upper side of the installation frame (6), and the upper and lower side walls of the movable plate (7) are evenly provided with a plurality of limit holes (7-2), and the limit holes (7-2) are inserted in cooperation with the lower ends of the limit rods (8-1); The limiting plates (8-2) are multiple and are equidistantly embedded in the cylindrical groove on the upper side of the installation frame (6) from front to back. The limiting plates (8-2) are sleeved one by one and fixed on one end of the limiting rod (8-1) located inside the installation frame (6). The upper surface of the limiting plates (8-2) is fixed with a resistance spring (8-3), and the upper end of the resistance spring (8-3) is fixed on the inner top wall of the cylindrical groove. A pull rod (8-4), wherein the pull rod (8-4) is suspended on the upper side of the installation frame (6), and the pull rod (8-4) is fixedly connected to the upper end of the limit rod (8-1). 7. The plane milling device with precise positioning according to claim 1, characterized in that: the adjustment mechanism (11) comprises: An adjustment plate (11-1), wherein the adjustment plate (11-1) is movably arranged in the movable plate (7), and a plurality of connecting plates (11-2) are fixed at equal intervals on a side wall of the adjustment plate (11-1), and the connecting plates (11-2) are fixed on the positioning plate (9) after passing through a slide groove on a side wall of the movable plate (7); The adjusting frame (11-3) is two and both are arranged in a "T" shape. The adjusting frame (11-3) slides to arrange the movable plate (7) away from the sliding groove on the side wall of the positioning plate (9). The support rod on one side of the adjusting frame (11-3) passes through the sliding groove on the side wall of the movable plate (7) and is fixed on the side wall of the connecting plate (11-2); A pulling frame (11-4), wherein there are two pulling frames (11-4), and both are arranged in a "U" shape, and the support rods on the front and rear sides of the pulling frame (11-4) pass through the support plate on the other side of the adjustment frame (11-3), and are inserted in cooperation with the circular groove on the side wall of the movable plate (7); The reset spring (11-5) is four in number and is sleeved one by one on the support rods at the front and rear sides of the pulling frame (11-4). The reset spring (11-5) is located in the support plate of the adjusting frame (11-3), and the two ends of the reset spring (11-5) are respectively fixedly connected to the support plates of the pulling frame (11-4) and the adjusting frame (11-3).