A processing device of a wood-plastic composite board finishing tool

Abstract

The application provides a processing device of wood-plastic composite board finishing tool, and relates to the field of metal processing, comprising: a processing assembly, the processing assembly comprises a driving mechanism, a switching mechanism and a tooling mechanism, the processing assembly has multiple sets of tooling mechanisms for standby use, different function processing rotating rods can be fixed on the drill chuck of each set of tooling mechanisms for standby use, the corresponding processing rotating rod can be switched for use through the switching mechanism, manual dismounting operation is not needed during processing, only the processing rotating rod of the tooling mechanism used downward can rotate to realize processing operation, the processing rotating rods of the remaining tooling mechanisms cannot rotate, the problems that the existing processing device of finishing tool needs manual replacement of the processing rotating rod with corresponding function on the drill chuck during processing of different processes, is very troublesome, cannot realize automatic switching of the processing rotating rod for use, and frequent dismounting operation easily causes damage of the processing rotating rod or the drill chuck are solved.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and in particular to a processing device for precision cutting tools for wood-plastic composite boards. Background Technology

[0002] Wood-plastic composite boards are made from wood fibers, plastics, and other additives through hot pressing and other processes. They combine the advantages of both wood and plastic. During the production of wood-plastic composite boards, problems such as rough edges and unevenness are prone to occur on the edges, which greatly affects the appearance and dimensional accuracy of the boards. Therefore, wood-plastic composite boards need to be finished with precision cutting tools. These tools are generally sharp-edged metal products. During the processing of these tools, drilling, grinding, or enlarging operations are often required on the tool body to facilitate the assembly and use of the precision cutting tools.

[0003] However, the existing processing devices for wood-plastic composite board finishing tools require manual replacement of the corresponding processing rods (such as drill bits and grinding heads) on the drill chuck when performing different processing steps (such as drilling and grinding inside the hole). This is very troublesome and cannot achieve automated switching of processing rods. In addition, frequent installation and disassembly operations can easily lead to damage to the processing rods or drill chucks. The stability and flexibility are poor, and the practicality is not high. Summary of the Invention

[0004] This disclosure relates to a processing device for precision cutting tools for wood-plastic composite boards. The device has a processing assembly with multiple sets of tooling mechanisms for backup use. Each tooling mechanism has a drill chuck on which different processing rods (such as drilling bits, grinding heads, reaming bits, etc.) can be fixed for backup. The corresponding processing rod can be switched for use through a switching mechanism. No manual installation or disassembly is required during processing. At the same time, the drive mechanism can only drive the processing rod of the tooling mechanism facing downward to rotate to achieve the processing operation. The processing rods of the other tooling mechanisms will not rotate. The device is safe and stable to use, and has extremely high flexibility, stability and practicality.

[0005] In a first aspect, this disclosure provides a processing device for precision finishing tools for wood-plastic composite boards, specifically including: a base assembly, the base assembly including a worktable, a support column and an electric push rod, the support column being fixedly installed on the top of the worktable and the electric push rod being fixedly installed on the top of the support column; and a processing component, the processing component including a drive mechanism, a switching mechanism and a tooling mechanism;

[0006] The drive mechanism includes a mounting plate, a drive shaft, and a drive motor. The mounting plate is fixedly mounted on the bottom of the push rod of the electric push rod, and the drive shaft is rotatably connected inside the mounting plate. The drive motor is fixedly mounted on the side of the mounting plate. The switching mechanism includes a switching plate and a switching motor. The switching plate is rotatably connected to the side of the mounting plate, and the switching motor is fixedly mounted on the side of the mounting plate. The tooling mechanism includes a radial retainer, a drive shaft, and a connecting shaft. The radial retainer is inserted into the side of the switching plate, and the drive shaft is inserted into the inside of the connecting shaft. The connecting shaft is rotatably connected to the inside of the radial retainer, and the connecting shaft is inserted into the side of the switching plate.

[0007] In at least some embodiments, the drive motor and the drive shaft are connected by a gear set, and a switching worm is provided on the outside of the rotating shaft of the switching motor, and a positioning worm wheel is provided on the outside of the rotating shaft of the switching disk, with the switching worm and the positioning worm wheel being connected by a transmission.

[0008] In at least some embodiments, the mounting plate has a displacement guide groove inside, and the radial retainer has a displacement guide rod on its side, the displacement guide rod being inserted into the displacement guide groove.

[0009] In at least some embodiments, the displacement guide groove includes a positioning groove arranged in a horizontal straight line and two arc-shaped separation grooves. The two separation grooves are symmetrically arranged, and the bottom ends of the two separation grooves are respectively connected to the grooves at both ends of the positioning groove.

[0010] In at least some embodiments, the drive shaft is provided with an anti-jamming spring inside, and the two ends of the anti-jamming spring abut against the inside of the drive shaft and the inside of the connecting shaft, respectively.

[0011] In at least some embodiments, the outer end of the transmission shaft is provided with a machining gear, and one side of the drive shaft is provided with a drive gear. When the displacement guide rod is located inside the separation groove at the end away from the positioning groove, the drive gear and the machining gear are separated from each other. When the displacement guide rod is located inside the positioning groove, the gear teeth of the drive gear and the machining gear mesh and drive each other.

[0012] In at least some embodiments, the radial retainer has a track block with a cross-section of "+" on its side, and the switching disk has a track groove inside, with the track block inserted into the track groove.

[0013] In at least some embodiments, the cross-sectional shape of the middle shaft of the drive shaft is a regular polygon, and the inside of the connecting shaft is provided with a synchronization groove, and the shaft portion of the drive shaft with the regular polygonal cross-section is inserted into the inside of the synchronization groove.

[0014] In at least some embodiments, a drill chuck is fixedly connected to the outer end of the connecting shaft, and the tooling mechanism is provided in two sets, with an included angle of 90 degrees between the two sets of tooling mechanisms. Different processing rotating rods with different functions are fixed to the outside of the drill chucks of the two sets of tooling mechanisms.

[0015] In at least some embodiments, the displacement guide groove further includes a circulation groove, and the circulation groove is designed as an arc-shaped groove. The two ends of the circulation groove are respectively connected to the top of the two separation grooves. When the displacement guide rod is located inside the circulation groove, the drive gear and the processing gear are separated from each other.

[0016] The processing device for precision cutting tools of wood-plastic composite boards provided by the present invention has the following beneficial effects.

[0017] The processing assembly has multiple sets of tooling mechanisms in reserve. Each tooling mechanism can fix different processing rods (such as drilling bits, grinding heads, reaming bits, etc.) on the drill chuck for backup. The corresponding processing rod can be switched through the switching mechanism. No manual installation or disassembly is required during processing. At the same time, the drive mechanism can only drive the processing rod of the tooling mechanism facing downward to rotate to realize the processing operation. The processing rods of the other tooling mechanisms will not rotate, which is safe and stable to use and improves the flexibility, adaptability and practicality of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0022] Figure 2 This is a schematic diagram of the internal structure of the processing component on the back side in Embodiment 1 of the present invention.

[0023] Figure 3 This is a schematic diagram of the internal structure of the front side of the processing component in Embodiment 1 of the present invention.

[0024] Figure 4 This is the present invention. Figure 3 Enlarged structural diagram of part A in the middle.

[0025] Figure 5 This is a schematic diagram of the disassembled drive mechanism of Embodiment 1 of the present invention.

[0026] Figure 6 This is a structural diagram of the disassembled switching mechanism of the present invention.

[0027] Figure 7 This is a schematic diagram of the disassembled tooling mechanism of the present invention.

[0028] Figure 8 This is the switching of the invention. Figure 3 A schematic diagram of the internal structure of the tooling mechanism after it has been put into use.

[0029] Figure 9 This is a schematic diagram of the processing component in Embodiment 2 of the present invention.

[0030] Figure 10 This is the present invention. Figure 9 Internal structural diagram.

[0031] Figure 11 This is a schematic diagram of the displacement guide groove in Embodiment 2 of the present invention.

[0032] List of reference numerals

[0033] 1. Base assembly; 101. Worktable; 102. Support column; 103. Electric actuator;

[0034] 2. Drive mechanism; 201. Mounting plate; 211. Displacement guide groove; 2111. Positioning groove; 2112. Separation groove; 2113. Circulation groove; 202. Drive shaft; 2021. Drive gear; 203. Drive motor;

[0035] 3. Switching mechanism; 301. Switching disc; 3011. Positioning worm gear; 3012. Track groove; 302. Switching motor; 3021. Switching worm;

[0036] 4. Tooling mechanism; 401. Radial retainer; 4011. Displacement guide rod; 4012. Track block; 402. Drive shaft; 4021. Machining gear; 4022. Anti-jamming spring; 403. Connecting shaft; 4031. Synchronizing groove;

[0037] 5. Drill chuck. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please refer to Figures 1 to 11 As shown:

[0040] Example 1: The present invention provides a processing device for precision finishing tools of wood-plastic composite boards, including a base assembly 1, which includes a worktable 101, a support column 102 and an electric push rod 103. The support column 102 is fixedly installed on the top of the worktable 101 and the electric push rod 103 is fixedly installed on the top of the support column 102. It also includes a processing component, which includes a drive mechanism 2, a switching mechanism 3 and a tooling mechanism 4.

[0041] The drive mechanism 2 includes a mounting plate 201, a drive shaft 202, and a drive motor 203. The mounting plate 201 is fixedly mounted on the bottom of the push rod of the electric push rod 103, and the drive shaft 202 is rotatably connected to the inside of the mounting plate 201. The drive motor 203 is fixedly mounted on the side of the mounting plate 201. The switching mechanism 3 includes a switching plate 301 and a switching motor 302. The switching plate 301 is rotatably connected to the side of the mounting plate 201, and the switching motor 302 is fixedly mounted on the side of the mounting plate 201. The tooling mechanism 4 includes a radial retainer 401, a transmission shaft 402, and a connecting shaft 403. The radial retainer 401 is inserted into the side of the switching plate 301, and the transmission shaft 402 is inserted into the inside of the connecting shaft 403. The connecting shaft 403 is rotatably connected to the inside of the radial retainer 401, and the connecting shaft 403 is inserted into the side of the switching plate 301.

[0042] A drill chuck 5 is fixedly connected to the outer end of the connecting shaft 403, and there are two sets of tooling mechanisms 4. The included angle between the two sets of tooling mechanisms 4 is 90 degrees. Different processing rotating rods with different functions are fixed to the outside of the drill chuck 5 of the two sets of tooling mechanisms 4.

[0043] In this embodiment, the drive motor 203 and the drive shaft 202 are connected by a gear set, and a switching worm gear 3021 is provided on the outside of the rotating shaft of the switching motor 302. In use, the electric push rod 103 can drive the processing component to move up and down, thereby realizing the processing operation of the finishing tool positioned on the worktable 101. The drive mechanism 2 can drive the processing rotating rod of the downward-facing tooling mechanism 4 to rotate, so as to realize the drilling, in-hole grinding and other operations of the finishing tool. When the drive motor 203 rotates, it can drive the drive shaft 202 to rotate through the gear set. Since the displacement guide rod 4011 of the downward-facing tooling mechanism 4 is located inside the positioning groove 2111, the processing gear 4021 of the tooling mechanism 4 will mesh with the drive gear 2021 on the drive shaft 202, so that when the drive shaft 202 rotates, the drive gear... The 2021 gear can drive the transmission shaft 402 to rotate via the machining gear 4021. The cross-sectional shape of the middle shaft of the transmission shaft 402 is a regular polygon, and the connecting shaft 403 has a synchronization groove 4031 inside. The regular polygonal cross-section of the transmission shaft 402 is inserted into the synchronization groove 4031. When the transmission shaft 402 rotates, it can drive the connecting shaft 403 to rotate via the synchronization groove 4031. When the connecting shaft 403 rotates, it can drive the drill chuck 5 and the machining rod to rotate, realizing the machining operation of the finishing tool. Meanwhile, the displacement guide rod 4011 of the other tooling mechanism 4 is located inside the separation groove 2112 at one end away from the positioning groove 2111. The machining gear 4021 of this tooling mechanism 4 will be separated from the drive gear 2021 on the drive shaft 202, so the machining rod of this tooling mechanism 4 will not rotate, making it safe and stable to use.

[0044] In this embodiment, a positioning worm gear 3011 is provided outside the rotating shaft of the switching disk 301, and the switching worm 3021 is connected to the positioning worm gear 3011 for transmission. A displacement guide groove 211 is provided inside the mounting disk 201, and a displacement guide rod 4011 is provided on the side of the radial retainer 401. The displacement guide rod 4011 is inserted into the interior of the displacement guide groove 211. The displacement guide groove 211 includes a positioning groove 2111 arranged in a horizontal straight line and two arc-shaped separation grooves 2112. The two separation grooves 2112 are symmetrically arranged, and the bottom ends of the grooves of the two separation grooves 2112 are respectively connected to the grooves at both ends of the positioning groove 2111. A machining gear 4021 is provided at the outer end of the drive shaft 402, and a drive gear is provided on one side of the drive shaft 202. When the displacement guide rod 4011 is located inside the separation groove 2112 at one end away from the positioning groove 2111, the drive gear 2021 and the machining gear 4021 are separated from each other. When the displacement guide rod 4011 is located inside the positioning groove 2111, the drive gear 2021 and the machining gear 4021 mesh and transmit power. In use, the switching mechanism 3 can realize the switching of the tooling mechanism 4. Thus, through the machining rotating rods on different tooling mechanisms 4, multi-process machining of the machining tool can be achieved without disassembling the machining rotating rods. Taking the drill chuck 5 of the two sets of tooling mechanisms 4 as an example, the machining component is moved down by the electric push rod 103, and the tooling mechanism 4 used downwards can be used. The drill bit on the tool performs drilling operations on the finishing tool. After drilling is completed, the tooling mechanism 4 is switched via the switching motor 302 for subsequent processing operations. When the switching motor 302 rotates, the switching worm 3021 drives the switching disk 301 to rotate via the positioning worm wheel 3011. When the switching disk 301 rotates, it drives the two sets of tooling mechanisms 4 to rotate synchronously. Thus, under the guidance of the displacement guide groove 211, the tooling mechanism 4 that was originally used downward (with the drill bit installed) will switch to horizontal use. And under the guidance of the separation groove 2112, the displacement guide rod 4011 drives the radial retainer 401 to move outward along the track groove 3012. When the radial retainer 401 moves, it drives the connecting shaft 403 to move synchronously. Thus, the machining gear 4021 of the tooling mechanism 4 will separate from the drive gear 2021, and the other tooling mechanism 4 (equipped with a grinding head) will switch to a downward-facing state after rotating with the switching disk 301. The displacement guide rod 4011 of the tooling mechanism 4 will enter the positioning groove 2111 through the separation groove 2112. Under the limiting action of the positioning groove 2111 and the track groove 3012, the gear teeth of the machining gear 4021 and the drive gear 2021 will mesh and transmit power. Afterwards, when the tooling mechanism 4 is raised and lowered, it can perform internal grinding operations on the pre-drilled hole through the grinding head. It is convenient to switch and flexible to use. The two tooling mechanisms 4 can be used in a cycle by rotating the switching disk 301 in both directions.

[0045] In this embodiment, an anti-jamming spring 4022 is provided inside the transmission shaft 402, and the two ends of the anti-jamming spring 4022 abut against the inside of the transmission shaft 402 and the inside of the connecting shaft 403, respectively. In use, the design of the anti-jamming spring 4022 allows the transmission shaft 402 to move into the inside of the connecting shaft 403 to avoid and compress the anti-jamming spring 4022 if misalignment occurs during the process of the processing gear 4021 and the drive gear 2021 from separation to engagement. This prevents rigid damage to the processing gear 4021 and the drive gear 2021 during engagement. After that, under the action of the anti-jamming spring 4022, when the gear rotates, the gear teeth can automatically mesh and transmit power, further improving the stability of the device.

[0046] In this embodiment, the radial retainer 401 has a track block 4012 with a cross-section of "+" on its side, and the switching disk 301 has a track groove 3012 inside. The track block 4012 is inserted into the track groove 3012. The track groove 3012 can restrict the movement trajectory of the radial retainer 401 through the track block 4012, thereby avoiding the phenomenon of the radial retainer 401 becoming skewed or twisted and getting stuck when the switching tooling mechanism 4 is used, and ensuring stable use.

[0047] The specific usage and function of this embodiment: In this invention, the electric push rod 103 can drive the processing assembly to move up and down, thereby realizing the processing operation of the finishing tool positioned on the worktable 101. The drive mechanism 2 can drive the processing rotating rod of the downward-facing tooling mechanism 4 to rotate, thereby realizing operations such as drilling and in-hole grinding of the finishing tool. When the drive motor 203 rotates, it can drive the drive shaft 202 to rotate through the gear set. Since the displacement guide rod 4011 of the downward-facing tooling mechanism 4 is located inside the positioning groove 2111, the processing gear 4021 of this tooling mechanism 4 will mesh with the drive gear 2021 on the drive shaft 202. Therefore, when the drive shaft 202 rotates, the drive gear 2021 can pass through the processing gear 4021. The drive shaft 402 rotates, and when it rotates, it drives the connecting shaft 403 to rotate via the synchronous groove 4031. The rotating connecting shaft 403 then drives the drill chuck 5 and the machining rod to rotate, enabling the machining operation of the finishing tool. Meanwhile, the displacement guide rod 4011 of another set of tooling mechanisms 4 is located inside the separation groove 2112 at the end furthest from the positioning groove 2111. The machining gear 4021 of this set of tooling mechanisms 4 will separate from the drive gear 2021 on the drive shaft 202, thus preventing the machining rod of this set of tooling mechanisms 4 from rotating. The switching mechanism 3 enables the switching of tooling mechanisms 4, allowing for multi-stage machining of the tool without disassembling the machining rod through the machining rods on different tooling mechanisms 4. Taking the tooling mechanism 4 with a drill chuck 5 fixed to a drill bit and a grinding head as an example, the machining assembly is moved downward by the electric push rod 103. Drilling operations can be performed on the finishing tool using the drill bit on the downward-facing tooling mechanism 4. After drilling is completed, the tooling mechanism 4 is switched using the switching motor 302 for subsequent machining operations. When the switching motor 302 rotates, the switching worm 3021 drives the switching disk 301 to rotate via the positioning worm wheel 3011. The switching disk 301, when rotating, drives the two sets of tooling mechanisms 4 to rotate synchronously. Thus, under the guidance of the displacement guide groove 211, the tooling mechanism 4 that was originally used downwards (with the drill bit installed) will switch to horizontal use. Furthermore, the displacement guide rod 4011, under the guidance of the separation groove 2112, will drive... The radial retainer 401 moves outward along the track groove 3012. During this movement, the radial retainer 401 drives the connecting shaft 403 to move synchronously, causing the machining gear 4021 of this tooling mechanism 4 to separate from the drive gear 2021. Meanwhile, another tooling mechanism 4 (equipped with a grinding head) rotates with the switching disc 301 and switches to a downward-facing position. The displacement guide rod 4011 of this tooling mechanism 4 enters the positioning groove 2111 from the separation groove 2112. Under the limiting action of the positioning groove 2111 and the track groove 3012, the machining gear 4021 and the drive gear 2021 mesh and transmit power. Subsequently, during lifting and lowering, this tooling mechanism 4 can perform internal grinding operations on the pre-drilled hole using the grinding head.The two sets of tooling mechanisms 4 can be used cyclically by rotating the switching disk 301 in both directions. The anti-jamming spring 4022 is designed so that if misalignment occurs during the process of disengagement and engagement between the machining gear 4021 and the drive gear 2021, the transmission shaft 402 can move inwards towards the connecting shaft 403 to avoid and compress the anti-jamming spring 4022. This prevents rigid damage to the machining gear 4021 and the drive gear 2021 during engagement. Afterwards, under the action of the anti-jamming spring 4022, when the gears rotate, the teeth can automatically mesh and transmit power.

[0048] Example 2: Based on Example 1, the displacement guide groove 211 further includes a circulation groove 2113, and the circulation groove 2113 is designed as an arc-shaped groove. The two ends of the circulation groove 2113 are respectively connected to the top of the two separation grooves 2112. When the displacement guide rod 4011 is located inside the circulation groove 2113, the drive gear 2021 and the processing gear 4021 are separated from each other.

[0049] In this embodiment, the number of tooling mechanisms 4 is no longer limited to two sets, and the number can be increased or decreased. The design of the circulation groove 2113 allows multiple sets of tooling mechanisms 4 to be switched cyclically by the unidirectional rotation of the switching disk 301. Furthermore, by installing different processing rods on multiple sets of tooling mechanisms 4, the function of sequentially processing multiple processes of the processing tool can be realized. Taking the use of four sets of tooling mechanisms 4 as an example, drilling bits, grinding heads, reaming bits, and grinding heads are respectively installed on the four sets of tooling mechanisms 4. The processing components can realize the processing of drilling, internal grinding, reaming, and internal grinding of the processing tool. Moreover, there is no need to install or replace the processing rods during the entire processing process. Four processing processes can be completed at one time, making it flexible and convenient to use.

[0050] The specific usage and function of this embodiment: In this invention, the continuous unidirectional rotation of the switching disk 301 can realize the cyclic switching of multiple sets of tooling mechanisms 4, thereby enabling batch processing of wood-plastic composite board finishing tools. Each finishing tool can complete multiple processing steps at one time. The number of processing steps can be adjusted by setting the number of tooling mechanisms 4 and the setting type of processing rotating rod.

[0051] The following points should be noted in this article:

[0052] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0053] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0054] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A processing device for precision finishing tools for wood-plastic composite boards, comprising: A base assembly (1) includes a worktable (101), a support column (102), and an electric push rod (103). The support column (102) is fixedly installed on the top of the worktable (101), and the electric push rod (103) is fixedly installed on the top of the support column (102). The base assembly is characterized by further including a processing assembly, which includes a drive mechanism (2), a switching mechanism (3), and a tooling mechanism (4). The driving mechanism (2) includes a mounting plate (201), a drive shaft (202), and a drive motor (203). The mounting plate (201) is fixedly mounted on the bottom of the push rod of the electric push rod (103), and the drive shaft (202) is rotatably connected to the inside of the mounting plate (201). The drive motor (203) is fixedly mounted on the side of the mounting plate (201). The switching mechanism (3) includes a switching plate (301) and a switching motor (302). The switching plate (301) is rotatably connected to the mounting plate (201). The tooling mechanism (4) includes a radial retainer (401), a drive shaft (402), and a connecting shaft (403). The radial retainer (401) is inserted into the side of the switching disk (301), and the drive shaft (402) is inserted into the inside of the connecting shaft (403). The connecting shaft (403) is rotatably connected to the inside of the radial retainer (401), and the connecting shaft (403) is inserted into the side of the switching disk (301). The mounting plate (201) has a displacement guide groove (211) inside, and the radial retainer (401) has a displacement guide rod (4011) on its side, and the displacement guide rod (4011) is inserted into the displacement guide groove (211). The displacement guide groove (211) includes a positioning groove (2111) arranged in a horizontal straight line and two arc-shaped separation grooves (2112). The two separation grooves (2112) are symmetrically arranged, and the bottom of the groove body of the two separation grooves (2112) are respectively connected to the groove bodies at both ends of the positioning groove (2111).

2. The processing device for precision finishing tools of wood-plastic composite boards as described in claim 1, characterized in that: The drive motor (203) and drive shaft (202) are connected by a gear set for transmission. The external shaft of the switching motor (302) is provided with a switching worm (3021), and the external shaft of the switching disk (301) is provided with a positioning worm wheel (3011). The switching worm (3021) and the positioning worm wheel (3011) are connected for transmission.

3. The processing device for precision finishing tools of wood-plastic composite boards as described in claim 2, characterized in that: The transmission shaft (402) is provided with an anti-jamming spring (4022) inside, and the two ends of the anti-jamming spring (4022) abut against the inside of the transmission shaft (402) and the inside of the connecting shaft (403) respectively.

4. The processing device for precision finishing tools of wood-plastic composite boards as described in claim 3, characterized in that: The outer end of the transmission shaft (402) is provided with a machining gear (4021), and a drive gear (2021) is provided on one side of the drive shaft (202). When the displacement guide rod (4011) is located inside the separation groove (2112) at one end away from the positioning groove (2111), the drive gear (2021) and the machining gear (4021) are separated from each other. When the displacement guide rod (4011) is located inside the positioning groove (2111), the gear teeth of the drive gear (2021) and the machining gear (4021) mesh and transmit power.

5. The processing device for precision finishing tools of wood-plastic composite boards as described in claim 4, characterized in that: The radial retainer (401) has a track block (4012) with a cross-section of "+" on its side, and the switch plate (301) has a track groove (3012) inside, with the track block (4012) inserted into the track groove (3012).

6. The processing device for precision finishing tools of wood-plastic composite boards as described in claim 5, characterized in that: The central shaft of the drive shaft (402) has a regular polygonal cross-section, and the connecting shaft (403) has a synchronization groove (4031) inside. The shaft part of the regular polygonal cross-section of the drive shaft (402) is inserted into the synchronization groove (4031).

7. The processing device for precision finishing tools of wood-plastic composite boards as described in claim 6, characterized in that: The outer end of the connecting shaft (403) is fixedly connected to a drill chuck (5), and the tooling mechanism (4) is provided in two sets. The included angle between the two sets of tooling mechanisms (4) is 90 degrees. The drill chucks (5) of the two sets of tooling mechanisms (4) are respectively fixed with different processing rotating rods.

8. The processing device for precision finishing tools of wood-plastic composite boards as described in claim 7, characterized in that: The displacement guide groove (211) also includes a circulation groove (2113), and the circulation groove (2113) is designed as an arc-shaped groove. The two ends of the circulation groove (2113) are respectively connected to the top of the two separation grooves (2112). When the displacement guide rod (4011) is located inside the circulation groove (2113), the drive gear (2021) and the processing gear (4021) are separated from each other.

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