Furniture production three-axis numerical control equipment capable of improving machining precision

Abstract

The invention relates to furniture production three-axis numerical control equipment capable of improving machining precision, and relates to the technical field of furniture production equipment.The furniture production three-axis numerical control equipment comprises a numerical control machine tool body, a control panel is arranged on the numerical control machine tool body, a machining table is arranged in the numerical control machine tool body, and a pneumatic clamp is arranged at the top of the machining table; one end of the machining table is connected with a cutterhead connecting box, the top of the cutterhead connecting box is connected with a connecting cutterhead, a three-axis moving machining assembly is arranged in the numerical control machine tool body, and the bottom of the three-axis moving machining assembly is connected with a machining cutter assembly; the machining precision of the three-axis numerical control equipment for furniture production is remarkably improved, the positioning error is reduced, the quality consistency of products is improved, the abrasion of a cutter is effectively reduced, the service life of the cutter is prolonged, the replacement frequency and the maintenance cost are reduced, energy is saved, consumption is reduced, the working efficiency of the equipment is improved, the production period is shortened, and the production cost is reduced. And the competitiveness of enterprises is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of furniture production equipment, especially a three-axis numerical control equipment for furniture production that improves processing accuracy. Background Art

[0002] With the development of modern manufacturing, automation and intelligence have become industry trends. Especially in the furniture production industry, traditional manual operations can no longer meet the requirements of high-efficiency and high-quality production. Therefore, multi-axis numerical control machine tools have been widely used in furniture production due to their high precision and high speed.

[0003] However, there are still some problems in the actual application of existing three-axis numerical control equipment, such as inaccurate positioning and rapid tool wear, which directly affect the product quality and production efficiency.

[0004] Among them, the traditional manipulator scheme is difficult to handle complex processing tasks due to relying on simple cylinder drive. Especially under high-precision requirements, its positioning error is large, which easily leads to unstable product quality. The stepper motor scheme can provide relatively high precision in the initial stage, but due to its large heat generation, the temperature will rise during long-term operation, which will affect the precision stability, and it also has a large noise, which is not conducive to the workshop environment. The servo motor scheme has excellent dynamic response and stable performance, but its high cost limits its popularity in small and medium-sized enterprises, and it has high requirements for the control system, increasing the complexity and maintenance difficulty of the system.

[0005] Therefore, a three-axis numerical control equipment for furniture production that improves processing accuracy is proposed to solve the above-mentioned related technical problems. Summary of the Invention

[0006] To improve the above problems, this application provides a three-axis numerical control equipment for furniture production that improves processing accuracy.

[0007] This application provides a three-axis numerical control equipment for furniture production that improves processing accuracy, and adopts the following technical solutions: A three-axis numerical control equipment for furniture production that improves processing accuracy includes a numerical control machine tool main body. A control panel is arranged on the numerical control machine tool main body. A processing table is arranged inside the numerical control machine tool main body. A pneumatic fixture is arranged on the top of the processing table. One end of the processing table is connected with a tool disc connection box, and a connection tool disc is connected to the top of the tool disc connection box. A tool change machine box is connected to the bottom of the tool disc connection box. Among them, a three-axis moving machining component is arranged inside the main body of the numerically controlled machine tool. The three-axis moving machining component is connected above the machining table. The bottom of the three-axis moving machining component is connected with a machining tool component, and three servo motors are connected to the three-axis moving machining component. The main body of the numerically controlled machine tool is used for machining furniture. The furniture to be machined is placed on the machining table for machining. The furniture on the machining table is clamped and fixed by a pneumatic fixture. Among them, the pneumatic fixture is a mature existing technology. The clamping and loosening actions of the fixture are realized by opening and closing the air. The clamping force of the pneumatic fixture can reach 1000 N, which is suitable for workpieces of different sizes. The machining program can be set through the control panel to perform control, monitoring, maintenance and other work. The control program of the control panel is designed based on PLC (programmable logic controller), which has powerful data processing capabilities and fault diagnosis functions, and supports remote monitoring and maintenance. The machining tool component performs various machining processes on the furniture, and the machining tool component is controlled to move by the three-axis moving machining component. The three-axis moving machining component is a mature existing technology. The moving motion of the machining tool component in the X-axis, Y-axis and Z-axis can be realized through the three-axis moving machining component. Among them, the X-axis, Y-axis and Z-axis guide rails are made of high-precision linear guide rails, the material is 45# steel, and the surface is hardened to increase wear resistance and corrosion resistance. The three servo motors are respectively used to drive the drive components on the X-axis, Y-axis and Z-axis guide rails. When the machining tool component changes the machining action and the tool is damaged, the tool replacement work is completed on the connecting tool disc of the tool disc connection box.

[0008] Preferably, the servo motor is connected with a roller screw through a coupling, and both outer sides of the two ends of the roller screw are sleeved with screw connection seats through bearings, and the roller screw is connected with the three-axis moving machining component through the screw connection seats.

[0009] By adopting the above technical solution, the servo motor drives the roller screw to rotate through the coupling. The servo motor is a high-performance AC servo motor with a power of 3 kW, a rated speed of 3000 rpm, and a maximum torque of 10 Nm, and has the characteristics of low heat generation and high precision.

[0010] Preferably, an optical encoder is connected to one end of the roller screw away from the servo motor, a transmission connection block is sleeved on the roller screw through a thread, and a laser rangefinder is connected to the bottom of the transmission connection block.

[0011] By adopting the above technical solution, during the rotation of the roller screw, it drives the transmission connection block and the mobile sliding device connected to the transmission connection block to move, achieving precise positioning in the X, Y, and Z directions. And during the movement of the transmission connection block, the distance between the transmission connection block and the two screw connection seats is monitored by a laser rangefinder, and combined with an optoelectronic encoder, a dual redundant system is formed to further improve the positioning accuracy and reliability. The optoelectronic encoder detects and controls the motion state of the roller screw in real time, and the resolution of the optoelectronic encoder is as high as 1μm, and the detection distance of the proximity switch is 10mm, ensuring precise motion control.

[0012] Preferably, the machining tool assembly includes a sliding connection block and a tool connection head, and the tool connection head is connected to the bottom of the sliding connection block, and the sliding connection block is connected to a transmission connection block on the three-axis moving machining assembly.

[0013] By adopting the above technical solution, the machining tool assembly slides on the Z-axis of the three-axis moving machining assembly through the sliding connection block, and the transmission connection block drives the sliding connection block to slide.

[0014] Preferably, a tool head connection assembly is connected to the tool connection head through a thread, and a machining tool head is arranged in the tool head connection assembly, and an installation clamping convex block is arranged on the outer side of the bottom end of the tool head connection assembly.

[0015] By adopting the above technical solution, the tool head connection assembly is connected to the tool connection head through a thread, which is convenient for quick connection and disassembly, and the connection methods of the tool head connection assembly and the machining tool head to the tool connection head are existing mature technologies, and the driving structure of the machining tool head and the tool connection head is also an existing mature technology.

[0016] Preferably, sixteen tool grooves are arranged on the top of the connecting tool disc, and tool head connection assemblies with different shapes and functions are placed in the sixteen tool grooves. A rotary switching gear is connected to the bottom of the connecting tool disc, and the tool head connection assembly is buckled in the tool groove through the installation clamping convex block.

[0017] By adopting the above technical solution, tool head connection assemblies with different shapes and functions are connected in the sixteen tool grooves for various different machining operations, and the tool head connection assembly can be quickly installed and disassembled from the tool groove through the installation clamping convex block.

[0018] Preferably, a tool changing motor is connected to one side of the top of the tool disc connection box, a speed reducer is connected to the output shaft of the tool changing motor, a driving gear is connected to the top of one end of the speed reducer, and the driving gear meshes with the rotary switching gear.

[0019] By adopting the above technical solution, the tool changing motor increases the torque of the driving gear through a reduction box, and the driving gear drives the rotating switching gear and the connecting tool disc connected thereto to rotate. During the rotation of the connecting tool disc, the tool groove is driven to rotate. During the disassembly work, the empty tool groove is rotated to be perpendicular to the tool changing machine box, and after the tool head connecting component to be replaced is disassembled, the tool groove of the replacement tool head connecting component to be installed is rotated to be perpendicular to the tool changing machine box.

[0020] Preferably, a connecting frame is arranged inside the tool changing machine box, and the connecting frame is in an "F" shape. A lifting sleeve is inserted into the connecting frame, and the top of the lifting sleeve is connected with a twisting connecting block. One end of the twisting connecting block is inserted into the tool groove, and the twisting connecting block and the installation clamping convex block are mutually engaged.

[0021] By adopting the above technical solution, the installation clamping convex block on the tool head connecting component is clamped and fixed by the twisting connecting block on the lifting sleeve.

[0022] Preferably, a lifting thread plate is arranged on the outer side of the lifting sleeve. The inner side of the connecting frame is connected with a lifting motor through a bracket and a bearing, and a lifting gear is connected to the output shaft of the lifting motor. The lifting thread plate and the lifting gear are mutually meshed.

[0023] By adopting the above technical solution, the lifting motor drives the lifting gear to rotate. During the rotation of the lifting gear, the lifting sleeve and the twisting connecting block connected thereto are driven to lift through the lifting thread plate. During the lifting process of the twisting connecting block, the connection and relaxation of the tool head connecting component are completed, and the tool head connecting component can be driven to approach or move away from the tool groove during the lifting process.

[0024] Preferably, a rotating motor is connected to one side of the bottom of the connecting frame, and a driving rotating shaft is connected to the top of the rotating motor. Insertion convex blocks are arranged on both sides of the driving rotating shaft, and two groups of insertion grooves mutually engaged with the insertion convex blocks are arranged on the inner side of the lifting sleeve.

[0025] By adopting the above technical solution, the lifting sleeve slides and moves on the driving rotating shaft during the lifting process. The driving rotating shaft can be driven to rotate by the rotating motor. During the rotation of the driving rotating shaft, the lifting sleeve and the twisting connecting block connected thereto are driven to rotate through the insertion convex blocks and the insertion grooves. During the lifting and rotating process of the twisting connecting block, the threaded connection or disassembly between the tool head connecting component and the tool connecting head is completed.

[0026] 1. Compared with the prior art, this three-axis numerical control equipment for furniture production with improved processing accuracy significantly improves the processing accuracy of the three-axis numerical control equipment for furniture production, reduces the positioning error, and enhances the quality consistency of products. The servo motor drives the roller screw to rotate through a coupling. During the rotation of the roller screw, it drives the transmission connection block and the moving sliding equipment connected to the transmission connection block to move, achieving precise positioning in the X, Y, and Z directions. Moreover, during the movement of the transmission connection block, the laser rangefinder is used to monitor the distance between the transmission connection block and the two screw connection seats, and the photoelectric encoder detects and controls the movement state of the roller screw in real time. By combining the laser rangefinder and the photoelectric encoder, a dual redundant system is formed to further improve the positioning accuracy and reliability.

[0027] 2. Compared with the prior art, this three-axis numerical control equipment for furniture production with improved processing accuracy effectively reduces the wear of the cutting tools, extends the service life of the cutting tools, reduces the replacement frequency and maintenance cost. When the cutting tool assembly needs to be replaced during the processing operation or when the tool is damaged, the tool replacement work is completed on the connecting tool disc of the tool disc connection box. Sixteen tool grooves are connected with tool head connection components with different shapes and functions for various different processing operations. The twisting connection block on the lifting sleeve clamps and fixes the installation clamping protrusion on the tool head connection component, and the lifting motor drives the lifting gear to rotate. During the rotation of the lifting gear, it drives the lifting sleeve and the twisting connection block connected thereto to lift through the lifting thread plate. During the lifting process of the twisting connection block, it completes the connection and relaxation of the tool head connection component, and can drive the tool head connection component to approach or move away from the tool groove during the lifting process. Moreover, during the lifting process of the lifting sleeve, it slides on the driving rotating shaft. The rotating motor can drive the driving rotating shaft to rotate, and during the rotation of the driving rotating shaft, it drives the lifting sleeve and the twisting connection block connected thereto to rotate through the plugging protrusion and the plugging groove. During the lifting and rotating process of the twisting connection block, it completes the threaded connection or disassembly between the tool head connection component and the tool connection head.

[0028] 3. Compared with the prior art, this three-axis numerical control equipment for furniture production with improved processing accuracy saves energy and reduces consumption, improves the working efficiency of the equipment, shortens the production cycle, and enhances the competitiveness of the enterprise. The processing program is set through the control panel to perform control, monitoring, and maintenance work, etc. The control program of the control panel is designed based on PLC (Programmable Logic Controller), with powerful data processing capabilities and fault diagnosis functions, supporting remote monitoring and maintenance. The cutting tool assembly performs various processing operations on the furniture, and the cutting tool assembly is controlled to move by the three-axis moving processing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the main body of this application; Figure 2 Schematic diagram of the structure at the processing table of this application; Figure 3 Schematic diagram of the side sectional structure at the processing tool assembly of this application; Figure 4 Schematic diagram of the structure at the servo motor of this application; Figure 5 Schematic diagram of the structure at the tool disc connection box of this application; Figure 6 Schematic diagram of the structure at the connecting tool disc of this application; Figure 7 Schematic diagram of the structure at the tool changing machine box of this application; Figure 8 Schematic diagram of the structure at the lifting sleeve of this application.

[0030] Reference numerals are: 1, main body of the numerical control machine tool; 11, processing table; 2, three-axis moving processing assembly; 21, servo motor; 22, roller screw; 23, photoelectric encoder; 24, transmission connection block; 241, laser rangefinder; 25, screw connection seat; 3, processing tool assembly; 31, sliding connection block; 32, tool connection head; 33, tool head connection assembly; 331, installation clamping convex block; 34, processing tool head; 4, control panel; 5, pneumatic fixture; 6, tool disc connection box; 61, tool changing motor; 62, reduction gearbox; 63, driving gear; 7, connecting tool disc; 71, tool groove; 72, rotating switching gear; 8, tool changing machine box; 81, connecting frame; 82, rotating motor; 821, driving rotating shaft; 822, inserting convex block; 83, lifting motor; 831, lifting gear; 84, lifting sleeve; 841, lifting threaded plate; 842, inserting groove; 85, twisting connection block. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0032] The following is a further detailed description of this application in conjunction with the attached Figures 1 - 8 , drawings.

[0033] A three-axis numerical control device for furniture production that improves processing accuracy, including the main body 1 of the numerical control machine tool. Refer to Figure 1 and Figure 2, a control panel 4 is provided on the main body 1 of the numerically controlled machine tool. A processing table 11 is provided inside the main body 1 of the numerically controlled machine tool. A pneumatic fixture 5 is provided on the top of the processing table 11. One end of the processing table 11 is connected to a tool disc connection box 6. And a connecting tool disc 7 is connected to the top of the tool disc connection box 6. The bottom of the tool disc connection box 6 is connected to a tool changing machine box 8; Among them, a three-axis moving processing component 2 is provided inside the main body 1 of the numerically controlled machine tool. The three-axis moving processing component 2 is connected above the processing table 11. A processing tool component 3 is connected to the bottom of the three-axis moving processing component 2. And three servo motors 21 are connected to the three-axis moving processing component 2; The main body 1 of the numerically controlled machine tool is used for processing furniture. And the furniture to be processed is placed on the processing table 11 for processing. The furniture on the processing table 11 is clamped and fixed by the pneumatic fixture 5. And among them, the pneumatic fixture 5 is an existing mature technology. The clamping and loosening actions of the fixture are realized by opening and closing the air. And the clamping force of the pneumatic fixture 5 can reach 1000N, which is suitable for workpieces of different sizes. The processing program can be set through the control panel 4 to perform control, monitoring, maintenance and other work. And the control program of the control panel 4 is designed based on PLC (programmable logic controller), which has powerful data processing capabilities and fault diagnosis functions, supports remote monitoring and maintenance. The furniture is subjected to various processing operations by the processing tool component 3. And the movement of the processing tool component 3 is controlled by the three-axis moving processing component 2. And the three-axis moving processing component 2 is an existing mature technology. The movement of the processing tool component 3 in the X-axis, Y-axis and Z-axis directions can be realized through the three-axis moving processing component 2. And among them, the X-axis, Y-axis and Z-axis guide rails are made of high-precision linear guide rails, the material is 45# steel, and the surface is hardened to increase wear resistance and corrosion resistance. And the three servo motors 21 are respectively used to drive the drive components on the X-axis, Y-axis and Z-axis guide rails. And when the processing tool component 3 changes the processing operation and the tool is damaged, the tool replacement work is completed on the connecting tool disc 7 of the tool disc connection box 6.

[0034] Refer to Figure 4 , the servo motor 21 is connected to a roller screw 22 through a coupling. And both outer sides of the two ends of the roller screw 22 are sleeved with screw connection seats 25 through bearings. The roller screw 22 is connected to the three-axis moving processing component 2 through the screw connection seat 25; The servo motor 21 drives the roller screw 22 to rotate through the coupling. And the servo motor 21 is a high-performance AC servo drive motor with a power of 3kW, a rated speed of 3000rpm, and a maximum torque of 10 Nm, which has the characteristics of low heat generation and high precision.

[0035] Refer to Figure 4, one end of the roller screw 22 away from the servo motor 21 is connected with an optical encoder 23, and a transmission connection block 24 is sleeved on the roller screw 22 through a thread, and a laser rangefinder 241 is connected to the bottom of the transmission connection block 24; during the rotation of the roller screw 22, the transmission connection block 24 and the mobile sliding device connected to the transmission connection block 24 are driven to move, realizing precise positioning in three directions of X, Y, and Z. During the movement of the transmission connection block 24, the laser rangefinder 241 is used to monitor the distance between the transmission connection block 24 and the two sets of screw connection seats 25, and by combining with the optical encoder 23, a dual redundant system is formed to further improve the positioning accuracy and reliability. The movement state of the roller screw 22 is detected and controlled by the optical encoder 23 in real time, and the resolution of the optical encoder 23 is as high as 1μm, and the detection distance of the proximity switch is 10mm, ensuring precise movement control.

[0036] Refer to Figure 3 and Figure 4 , the machining tool assembly 3 includes a sliding connection block 31 and a tool connection head 32, and the tool connection head 32 is connected to the bottom of the sliding connection block 31. The sliding connection block 31 is connected to a transmission connection block 24 on the three-axis mobile machining assembly 2; the machining tool assembly 3 slides on the Z-axis of the three-axis mobile machining assembly 2 through the sliding connection block 31, and the transmission connection block 24 drives the sliding connection block 31 to slide.

[0037] Refer to Figure 4 , a tool head connection assembly 33 is connected to the tool connection head 32 through a thread, and a machining tool head 34 is arranged in the tool head connection assembly 33. An installation clamping convex block 331 is arranged on the outer side of the bottom end of the tool head connection assembly 33; the tool head connection assembly 33 is connected to the tool connection head 32 through a thread, which is convenient for quick connection and disassembly. The connection methods of the tool head connection assembly 33 and the machining tool head 34 to the tool connection head 32 are existing mature technologies, and the driving structure of the machining tool head 34 and the tool connection head 32 is also an existing mature technology.

[0038] Refer to Figure 5 and Figure 3 , there are sixteen tool slots 71 arranged on the top of the connection tool disc 7, and tool head connection assemblies 33 with different shapes and functions are placed in the sixteen tool slots 71. A rotary switching gear 72 is connected to the bottom of the connection tool disc 7, and the tool head connection assembly 33 is buckled in the tool slot 71 through the installation clamping convex block 331; sixteen tool slots 71 are connected with tool head connection assemblies 33 with different shapes and functions for various different machining operations, and the tool head connection assembly 33 can be quickly installed and disassembled from the tool slot 71 through the installation clamping convex block 331.

[0039] Refer to Figure 5 and Figure 6, on one side of the top of the cutter head connection box 6, a tool changing motor 61 is connected, and on the output shaft of the tool changing motor 61, a reduction box 62 is connected. On the top of one end of the reduction box 62, a driving gear 63 is connected, and the driving gear 63 meshes with the rotary switching gear 72; the tool changing motor 61 increases the torque of the driving gear 63 through the reduction box 62, and the driving gear 63 drives the rotary switching gear 72 and the connected cutter head 7 to rotate. During the rotation of the cutter head 7, the cutter groove 71 is driven to rotate. During the disassembly work, the empty cutter groove 71 is rotated to be perpendicular to the tool changing machine box 8. After the cutter head connection assembly 33 that needs to be replaced is disassembled, the cutter groove 71 of the cutter head connection assembly 33 that needs to be installed is rotated to be perpendicular to the tool changing machine box 8.

[0040] Refer to Figure 6 and Figure 7 , inside the tool changing machine box 8, a connecting frame 81 is arranged, and the connecting frame 81 is in an "F" shape. An elevating sleeve 84 is inserted into the connecting frame 81, and on the top of the elevating sleeve 84, a rotating connecting block 85 is connected. One end of the rotating connecting block 85 is inserted into the cutter groove 71, and the rotating connecting block 85 is mutually embedded with the installation clamping convex block 331; the installation clamping convex block 331 on the cutter head connection assembly 33 is clamped and fixed by the rotating connecting block 85 on the elevating sleeve 84.

[0041] Refer to Figure 7 , on the outer side of the elevating sleeve 84, an elevating threaded plate 841 is arranged. Inside the connecting frame 81, an elevating motor 83 is connected through a bracket and a bearing. On the output shaft of the elevating motor 83, an elevating gear 831 is connected, and the elevating threaded plate 841 meshes with the elevating gear 831; the elevating motor 83 drives the elevating gear 831 to rotate, and during the rotation of the elevating gear 831, the elevating sleeve 84 and the connected rotating connecting block 85 are driven to elevate through the elevating threaded plate 841. During the elevation of the rotating connecting block 85, the connection and relaxation of the cutter head connection assembly 33 are completed, and the cutter head connection assembly 33 can be driven to approach or move away from the cutter groove 71 during the elevation.

[0042] Refer to Figure 7 and Figure 8, a rotary motor 82 is connected to one side of the bottom of the connecting frame 81, and a driving rotating shaft 821 is connected to the top of the rotary motor 82. Plugging convex blocks 822 are arranged on both sides of the driving rotating shaft 821, and two groups of plugging grooves 842 that are mutually engaged with the plugging convex blocks 822 are arranged inside the lifting sleeve 84; during the lifting process of the lifting sleeve 84, it slides and moves on the driving rotating shaft 821. The driving rotating shaft 821 can be driven by the rotary motor 82 to rotate, and during the rotation of the driving rotating shaft 821, the lifting sleeve 84 and the screwing connecting block 85 connected thereto are driven to rotate through the plugging convex blocks 822 and the plugging grooves 842, and during the lifting and rotating process of the screwing connecting block 85, the threaded connection or disassembly of the tool head connecting assembly 33 and the tool connecting head 32 is completed.

[0043] The working process of this application is as follows: First, the processing program can be set through the control panel 4 to perform operations such as control, monitoring, and maintenance. The furniture to be processed is placed on the processing table 11 for processing. The pneumatic fixture 5 clamps and fixes the furniture on the processing table 11. After the furniture is fixed, the processing tool assembly 3 performs various processing operations on the furniture. The processing tool assembly 3 is controlled by the three-axis moving processing assembly 2 to move and process. The servo motor 21 drives the roller screw 22 to rotate through the coupling. During the rotation of the roller screw 22, the driving connection block 24 and the moving sliding device connected to the driving connection block 24 are driven to move, realizing precise positioning in the X, Y, and Z directions. During the movement of the driving connection block 24, the distance between the driving connection block 24 and the two screw connection seats 25 is monitored by the laser rangefinder 241, and the movement state of the roller screw 22 is detected and controlled by the photoelectric encoder 23 in real time. Combining the laser rangefinder 241 and the photoelectric encoder 23 forms a dual redundant system, further improving the positioning accuracy and reliability; When the processing tool assembly 3 changes the processing operation or the tool is damaged, the tool replacement work is completed on the connecting tool disc 7 of the tool disc connection box 6. Sixteen tool slots 71 are connected with tool head connecting assemblies 33 with different shapes and functions for various different processing operations. The driving gear 63 drives the rotating switching gear 72 and the connecting tool disc 7 connected thereto to rotate, and during the rotation of the connecting tool disc 7, the tool slots 71 are driven to rotate. When performing the disassembly work, the empty tool slot 71 is rotated to be perpendicular to the tool change machine box 8, and after the tool head connecting assembly 33 that needs to be replaced is disassembled, the tool slot 71 for the replacement tool head connecting assembly 33 that needs to be installed is rotated to be perpendicular to the tool change machine box 8; The installation clamping protrusion 331 on the tool bit connection assembly 33 is clamped and fixed by the screwing connection block 85 on the lifting sleeve 84, and the lifting motor 83 drives the lifting gear 831 to rotate. During the rotation of the lifting gear 831, the lifting sleeve 84 and the screwing connection block 85 connected thereto are lifted and lowered through the lifting threaded plate 841. During the lifting process, the screwing connection block 85 completes the connection and relaxation of the tool bit connection assembly 33, and can drive the tool bit connection assembly 33 to approach or move away from the tool groove 71 during the lifting process. During the lifting process, the lifting sleeve 84 slides on the driving rotating shaft 821. The driving rotating shaft 821 can be driven to rotate by the rotating motor 82. During the rotation of the driving rotating shaft 821, the lifting sleeve 84 and the screwing connection block 85 connected thereto are driven to rotate through the plugging protrusion 822 and the plugging groove 842. During the lifting and rotating process, the screwing connection block 85 completes the threaded connection or disassembly between the tool bit connection assembly 33 and the tool connection head 32.

[0044] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A three-axis CNC equipment for furniture production with improved processing accuracy, comprising a CNC machine tool body (1), characterized in that: A control panel (4) is provided on the CNC machine tool body (1), a processing table (11) is provided inside the CNC machine tool body (1), a pneumatic clamp (5) is provided on the top of the processing table (11), one end of the processing table (11) is connected to a tool disc connection box (6), the top of the tool disc connection box (6) is connected to a connecting tool disc (7), and the bottom of the tool disc connection box (6) is connected to a tool changer box (8); A three-axis movable machining component (2) is arranged in the CNC machine tool body (1); the three-axis movable machining component (2) is connected above a machining table (11); a machining tool component (3) is connected to the bottom of the three-axis movable machining component (2); and three groups of servo motors (21) are connected to the three-axis movable machining component (2).

2. The three-axis CNC equipment for furniture production with improved processing accuracy according to claim 1, characterized in that: The servo motor (21) is connected to a roller screw (22) via a coupling, and both ends of the roller screw (22) are connected to screw connection seats (25) via bearing sleeves, and the roller screw (22) is connected to the three-axis moving processing assembly (2) via the screw connection seat (25).

3. The three-axis CNC equipment for furniture production with improved processing accuracy according to claim 2, characterized in that: One end of the roller screw (22) away from the servo motor (21) is connected to a photoelectric encoder (23), and a transmission connection block (24) is sleeved on the roller screw (22) via a thread, and a laser rangefinder (241) is connected to the bottom of the transmission connection block (24).

4. The three-axis CNC equipment for furniture production with improved processing accuracy according to claim 3 is characterized in that: The machining tool assembly (3) comprises a sliding connection block (31) and a tool connection head (32), wherein the tool connection head (32) is connected to the bottom of the sliding connection block (31), and the sliding connection block (31) is connected to a group of transmission connection blocks (24) on the three-axis movable machining assembly (2).

5. The three-axis CNC equipment for furniture production with improved processing accuracy according to claim 4, characterized in that: A tool head connecting assembly (33) is threadedly connected to the tool connecting head (32), a processing tool head (34) is arranged in the tool head connecting assembly (33), and a mounting clamping protrusion (331) is arranged on the outer side of the bottom end of the tool head connecting assembly (33).

6. The three-axis CNC equipment for furniture production with improved processing accuracy according to claim 5, characterized in that: Sixteen groups of knife grooves (71) are arranged on the top of the connecting knife disc (7), and knife head connecting assemblies (33) with different shapes and functions are placed in each of the sixteen groups of knife grooves (71); a rotating switching gear (72) is connected to the bottom of the connecting knife disc (7), and the knife head connecting assemblies (33) are snap-fitted into the knife grooves (71) by means of mounting clamping protrusions (331).

7. The three-axis CNC equipment for furniture production with improved processing accuracy according to claim 6, characterized in that: A tool changing motor (61) is connected to one side of the top of the tool disc connection box (6), and a reduction box (62) is connected to the output shaft of the tool changing motor (61). A driving gear (63) is connected to the top of one end of the reduction box (62), and the driving gear (63) and the rotation switching gear (72) are meshed with each other.

8. The three-axis CNC equipment for furniture production with improved processing accuracy according to claim 7, characterized in that: A connecting frame (81) is arranged in the tool changing machine box (8), and the connecting frame (81) is "F" shaped. A lifting sleeve (84) is inserted into the connecting frame (81), and a twisting connecting block (85) is connected to the top of the lifting sleeve (84). One end of the twisting connecting block (85) is inserted into the tool groove (71), and the twisting connecting block (85) and the mounting clamping protrusion (331) are mutually engaged.

9. The three-axis CNC equipment for furniture production with improved processing accuracy according to claim 8, characterized in that: A lifting thread plate (841) is provided on the outside of the lifting sleeve (84), a lifting motor (83) is connected to the inside of the connecting frame (81) via a bracket and a bearing, a lifting gear (831) is connected to the output shaft of the lifting motor (83), and the lifting thread plate (841) and the lifting gear (831) are meshed with each other.

10. The three-axis CNC equipment for furniture production with improved processing accuracy according to claim 9, characterized in that: A rotating motor (82) is connected to one side of the bottom of the connecting frame (81), and a driving shaft (821) is connected to the top of the rotating motor (82). Both sides of the driving shaft (821) are provided with plug-in protrusions (822), and the inner side of the lifting sleeve (84) is provided with two groups of plug-in grooves (842) that are interlocked with the plug-in protrusions (822).

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