A composite CNC machine tool based on metal processing

Abstract

This invention belongs to the field of CNC machine tools, specifically a composite CNC machine tool based on metal processing. It includes a machine housing and a power table and back plate fixed inside the housing. The power table is fixed to the front end of the back plate, and a vertically arranged lifting platform is also fixed to the front end of the back plate. A tool rack is fixed to the output end of the lifting platform. A horizontally movable drive table is installed at the bend of the power table, and a spindle table for fixing the workpiece is fixed to the end of the drive table. Multiple connecting rows are installed on the surface of the tool rack, with a powered tool head fixed to the uppermost connecting row. This design reduces the machining accuracy degradation caused by tool head vibration, such as workpiece chatter marks and inconsistent workpiece surface dimensions, which reduce workpiece quality. It also reduces problems caused by long-term vibration, such as tool breakage, loose clamping, and excessive noise.

Description

Technical Field

[0001] This invention belongs to the field of CNC machine tools, specifically a composite CNC machine tool based on metal processing. Background Technology

[0002] A CNC machine tool is a high-precision automated machining equipment controlled by a computer program. It automatically completes various processes such as cutting, drilling, and milling of parts according to preset digital code instructions. CNC machine tools can accurately control the relative motion trajectory and speed between the tool and the workpiece, solving the problem of machining complex parts. Composite CNC machine tools are high-end models developed from CNC machine tools. They integrate multiple machining processes such as turning, milling, drilling, and boring, and are equipped with multi-axis linkage and multi-tool structure. Their core advantage lies in enabling complex parts to complete all processes in a single clamping, thereby avoiding the cumulative errors caused by multiple clamping and greatly improving machining accuracy and efficiency.

[0003] Traditional composite CNC machine tools employ two methods for fixing tool heads: the rack-type and the turret-type. The rack-type tool change is extremely fast, allowing for quick tool changes and subsequent operations via simple lifting. However, the rack-type can only hold tools in one row, resulting in cramped space. To facilitate machining, only continuously extending tools can be used. However, longer tools are prone to tool vibration during turning, causing tool damage and reduced part quality. The turret-type tool change requires a large initial investment and can handle complex processes, but its tool change speed is slower and its failure rate is higher.

[0004] Therefore, the present invention provides a composite CNC machine tool based on metal processing. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: A composite CNC machine tool based on metal processing according to the present invention includes a machine housing and a power table and a back plate fixed inside the machine housing. The power table is fixed to the front end of the back plate, and a vertically arranged lifting platform is also fixed to the front end of the back plate. A tool rack is fixed to the output end of the lifting platform. A drive table capable of horizontal movement is installed at the bend of the power table. A spindle table for fixing the workpiece is fixed to the end of the drive table. Multiple connecting rows are installed on the surface of the tool rack. A power tool head is fixed to the uppermost connecting row, and different types of tool holders are fixed to the remaining connecting rows. A vibration absorber capable of connecting and separating from the tool holder is also provided inside the machine housing. The vibration absorber is on the same horizontal plane as the spindle table. When the tool holder is machining the part, the lifting table controls the tool plate to move until it is flush with the part. At this time, the vibration absorber aligns with the position of the tool holder near the end. After the tool holder moves to the predetermined position, it does not need to move further. Subsequent machining relies on the part actively moving towards the end of the tool holder to complete the turning work. Therefore, the tool holder and the vibration absorber remain in a horizontal position, and the tool holder is located at the lower edge of the part. So no matter how the part moves forward, it will not contact the vibration absorber, ensuring smooth machining. During the turning process, the vibration of the tool holder at the tool head position with the largest vibration amplitude will be transmitted to the vibration absorber, which is also close to the tool head position. The vibration absorber can absorb and cancel the vibration, thereby reducing the problem of machining accuracy reduction caused by tool head vibration. If workpiece vibration marks or sudden changes in workpiece surface dimensions occur, the vibration absorber will be able to absorb and cancel the vibration. This design addresses issues such as reduced workpiece quality due to minor vibrations, while also mitigating problems like tool breakage, clamping loosening, and excessive noise caused by prolonged vibration. After the tool holder finishes machining, during the part's retraction period, the vibration absorber is controlled to move away from the tool holder. Then, the tool rack moves, positioning the tool holder needed for the next step. Simultaneously, the vibration absorber connects to the tool holder again, allowing the part to advance for machining. This ensures a smooth workflow, reducing step time and improving efficiency. It also features a positioning function because the vibration absorber maintains a constant horizontal height. When paired with the tool holder, the control data of the lifting platform can be calibrated, further ensuring machining accuracy and reducing errors. Furthermore, the pluggable vibration absorber does not affect the high-speed lifting and lowering of the tool rack; it only engages during machining.

[0007] Preferably, the vibration absorber consists of a transmission rod, an adsorption block, and a damping ball. The adsorption block and the damping ball are respectively connected to both ends of the transmission rod. The damping ball is hollow inside, and a solid ball is disposed inside the damping ball. The adsorption block can be fixed to the outside of the tool holder. When the tool holder vibrates due to friction, the vibration is transmitted to the damping ball through the transmission rod, causing the damping ball to shake. At the same time, the solid ball moves inside, and the vibration energy is consumed through the collision loss and friction loss of the solid ball. At the same time, the inertial lag of the solid ball can also effectively offset the vibration, thereby achieving the function of reducing the vibration of the tool holder, thereby improving the machining quality and increasing the service life of the tool.

[0008] Preferably, the machine housing is further provided with a pick-up seat flush with the spindle table. The pick-up seat has a recycling groove at one end facing the spindle table. Multiple gripping arms for gripping and releasing damping balls are installed in the recycling groove. When the cutter bar moves to be flush with the part, the vibration absorber will be flush with the cutter bar. The pick-up seat can push the vibration absorber outward, so that the adsorption block is attached and fixed to the cutter bar. The pick-up seat does not contact the damping ball. When the cutter bar finishes working, the pick-up seat can pull the damping ball back and remove the entire vibration absorber from the cutter bar, waiting for the next ejection operation. The recycling groove is used to place the damping ball.

[0009] Preferably, the surface of the blade bar is provided with a docking groove that matches the adsorption block. The inside of the docking groove is cylindrical. The adsorption block is made of magnetic material, and the bottom of the docking groove is also made of magnetic material. As the vibration absorber is pushed out, the adsorption block will be inserted into the docking groove. Under the magnetic attraction, the adsorption block will be fixed in the docking groove to complete a temporary connection. It will only separate from the docking groove when the retrieval seat is pulled back.

[0010] Preferably, a connecting groove is installed at the bottom of the docking groove, and a spray hole that docks with the connecting groove is opened at the end of the tool bar. A transmission channel is opened inside the vibration absorber, and a spiral tube is connected between the bottom of the pick-up seat and the damping ball. When the adsorption block and the docking groove are connected, coolant can be filled into the spiral tube. The coolant is injected into the spray hole through the internal transmission channel of the vibration absorber. The spray hole is located above the end of the tool bar, which is exactly the contact point between the part and the tool bar. At the same time, the spray hole diffuses the coolant outward, which can accurately cool the machining area. With this setting, the problem of difficulty in locating the coolant spray point is solved in the case of a gang-type machine tool due to the continuous change of the tool and machining position.

[0011] Preferably, the gripping arm is arc-shaped, and a rotating seat for controlling the rotation of the gripping arm is connected to the outer rear end of the gripping arm. Both ends of the gripping arm are made of magnetic material. The outer side of the damping ball is fitted with a patch that matches the two ends of the gripping arm. The arc-shaped gripping arm can rotate under the drive of the rotating seat. Multiple gripping arms are arranged in a ring at equal intervals to stably grip the damping ball. Because the gripping arm is arc-shaped and the rotation position is in the middle and rear position, when it is necessary to push the damping ball outward, the gripping arm will open outward as it rotates. At the same time, the rear end of the gripping arm will press against the damping ball and push it outward until the adsorption block is in contact with the docking groove. When it is necessary to recycle the damping ball, the gripping arm only needs to rotate. At this time, the front end of the gripping arm will contact, squeeze and pull back the damping ball during the rotation, thereby pulling the damping ball into the recycling groove and completing the recycling of the vibration absorber. The patch is designed to reduce the damage to the damping ball during the squeezing process.

[0012] Preferably, multiple replacement seats are provided above the picking seat. The front end of the replacement seat grips a replacement ball that can connect with the transmission rod. Different replacement balls have different damping effects. The end of the spiral tube is detachable from the damping ball. The required damping is the same or different under different needs. The solid balls in different replacement balls have different volumes and different damping effects. Different replacement balls can be used according to different needs.

[0013] Preferably, a horizontally arranged electric telescopic rod is fixedly connected inside the picking seat. A disassembly head is installed at the end of the electric telescopic rod. The end of the spiral tube is connected to the damping ball through a disassembly shaft. When replacing the damping ball, the electric telescopic rod is first extended to approach the disassembly head to adsorb and remove the disassembly shaft at the end of the spiral tube, allowing the damping ball to be replaced. Then, the entire vibration absorber is adsorbed onto the tool bar and moved with the tool bar to the replacement seat above. It is first moved to the empty replacement seat to remove the damping ball, and then moved to the picking seat containing the replacement ball for replacement.

[0014] Preferably, the replacement seat structure is the same as the pick-up seat and is also equipped with multiple gripping arms. The front end of the replacement seat is a rotatable structure, and the rotating seat of the replacement seat is fixedly connected to the rotatable structure. The connection between the damping ball and the transmission rod can be a spiral connection. After the gripping arm on the replacement seat fixes the damping ball, the damping ball can be removed by rotation. Subsequently, a new replacement ball can be fixed by tightening the spiral. The connection between the damping ball and the transmission rod can also be completed by other existing technologies for disassembly and connection.

[0015] Preferably, a vertically arranged locking platform is fixedly connected between the rear ends of the pick-up seat and the multiple replacement seats. A filling valve is fixedly connected to the rear end of the locking platform. The filling valve is fixedly connected to the machine housing. An observation window is installed at the front end of the machine housing. A feeding valve communicating with the spindle table is installed on the outside of the machine housing. Coolant is filled into the spiral tube through the filling valve. The feeding valve is connected to the spindle table, so that the required parts can be directly transported from the outside to the inside of the equipment for processing.

[0016] The beneficial effects of this invention are as follows: 1. The composite CNC machine tool based on metal processing described in this invention, through the setting of a vibration absorber, when the tool holder is processing the part, the lifting table controls the tool plate to move to be flush with the part. At this time, the vibration absorber is controlled to align with the position of the tool holder near the end. After the tool holder moves to the predetermined position, it does not need to move. Subsequent processing relies on the part actively moving towards the end of the tool holder to complete the turning work. Therefore, the tool holder and the vibration absorber remain in a horizontal position, and the tool holder is located at the lower edge of the part. So no matter how the part moves forward, it will not contact the vibration absorber, ensuring smooth processing. During the turning process, the vibration of the tool holder at the position of the tool head with the largest vibration amplitude will be transmitted to the vibration absorber, which is also close to the tool head. The vibration absorber can absorb and cancel the vibration, thereby reducing the problem of machining accuracy decay caused by tool head vibration. This also reduces the problems of workpiece quality reduction such as workpiece vibration marks and workpiece surface size fluctuations, while reducing problems such as tool breakage, clamping loosening, and excessive noise caused by long-term vibration.

[0017] 2. The composite CNC machine tool based on metal processing described in this invention allows for the filling of a spiral tube with coolant after the adsorption block and the docking groove are connected. The coolant is then injected into the spray nozzle through the internal transmission channel of the vibration absorber. The spray nozzle is located above the end of the tool holder, precisely at the contact point between the part and the tool holder. Simultaneously, the spray nozzle diffuses the coolant outwards, accurately cooling the machined area. This design solves the problem in gang-type machine tools where it is difficult to locate the coolant spray point due to the constantly changing positions of the tool and the machining process. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the locking platform and lifting platform of the present invention; Figure 3 This is a perspective view of the spindle table and the tool rack of the present invention; Figure 4 This is a perspective view of the power cutter head and cutter holder of the present invention; Figure 5 This is a perspective view of the connecting bar and the tool holder of the present invention; Figure 6 This is a perspective view of the present invention for taking out and replacing the seat; Figure 7 This is a perspective view of the vibration absorber and the pick-up base of the present invention; Figure 8 This is a schematic diagram of the structure of the retrieval base of the present invention; Figure 9 This is a perspective view of the vibration absorber of the present invention; In the diagram: 1. Machine casing; 2. Feeding valve; 3. Filling valve; 4. Observation window; 5. Power platform; 6. Back panel; 7. Lifting platform; 8. Tool bar; 9. Locking platform; 10. Drive platform; 11. Spindle platform; 12. Connecting bar; 13. Tool bar; 14. Power tool head; 15. Drill bit; 16. Milling cutter; 17. Vibration absorber; 19. Docking groove; 20. Spray nozzle; 21. Replacement seat; 22. Pick-up seat; 23. Replacement ball; 24. Damping ball; 25. Transmission rod; 26. Adsorption block; 27. Gripping arm; 28. Rotary seat; 29. ​​Electric telescopic rod; 30. Spiral tube; 31. Solid ball. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figures 1 to 9As shown in the embodiment of the present invention, a composite CNC machine tool based on metal processing includes a machine housing 1 and a power table 5 and a back plate 6 fixed inside the machine housing 1. The power table 5 is fixed to the front end of the back plate 6. A vertically arranged lifting table 7 is also fixed to the front end of the back plate 6. A tool rack 8 is fixed to the output end of the lifting table 7. A drive table 10 capable of horizontal movement is installed at the bend of the power table 5. A spindle table 11 for fixing the workpiece is fixed to the end of the drive table 10. Multiple connecting rows 12 are installed on the surface of the tool rack 8. A power tool head 14 is fixed to the uppermost connecting row 12. Different types of tool holders 13 are fixed to the remaining connecting rows 12. A vibration absorber 17 capable of connecting and separating from the tool holders 13 is also provided inside the machine housing 1. The vibration absorber 17 is on the same horizontal plane as the spindle table 11. During operation, the part to be machined is fixed at the end of the spindle table 11. The spindle table 11 rotates itself, thereby rotating the part. The drive table 10 is controlled to move horizontally, which in turn moves the spindle table 11 and the part horizontally. Simultaneously, the lifting table 7 controls the lifting of the tool holder 8, moving the required tool holder 13 to the same horizontal height as the part. Then, the part is moved close to the cutting tool section at the end of the tool holder 13. At this point, the end of the tool holder 13 is located on the outer side and slightly below the part, rubbing against the part for cutting. Different types of tool holders 13 can be fixed to the tool holder 8 from top to bottom. First, the tool holder 13 is connected to the connecting strip 12, and then the connecting strip 12 is fixed to the tool holder 8 with bolts. This allows for the selection of the required tool holders according to the specific needs. The required cutting tool is moved around the part for machining; each time the tool holder 8 is adjusted, the part needs to be moved back and forth synchronously to avoid collision between the tool and the part during the movement; it can also fix a stationary drill bit for horizontal drilling of the part; when vertical drilling and milling are required, the power head 14 is controlled to sink above the part, and a drill bit 15 or a milling cutter 16 can be installed at the output end of the power head 14. While keeping the part stationary, vertical drilling and milling are completed on the part. It should be noted that the drill bit closer to the tool holder 8 needs to be longer than the drill bit farther away from the tool holder 8 to ensure that the two can work independently; power heads 14 in opposite directions can also be installed at the bottom of the tool holder 8, thereby increasing the types of tool heads that can be installed, and thus completing the function of composite CNC machining; When the tool holder 13 is machining the part, the lifting table 7 controls the tool rack 8 to move until it is flush with the part. At this time, the vibration absorber 17 is controlled to align with the position of the tool holder 13 near the end. After the tool holder 13 moves to the predetermined position, it does not need to move further. Subsequent machining relies on the part actively moving towards the end of the tool holder 13 to complete the turning work. Therefore, the tool holder 13 and the vibration absorber 17 remain in a horizontal position, and the tool holder 13 is located at the lower edge of the part. So no matter how the part moves forward, it will not contact the vibration absorber 17, ensuring smooth machining. During the turning process, the vibration of the tool holder 13 at the tool head position with the largest vibration amplitude will be transmitted to the vibration absorber 17, which is also close to the tool head position. The vibration absorber 17 can absorb and cancel the vibration, thereby reducing the problem of machining accuracy attenuation caused by tool head vibration. If workpiece vibration marks or workpiece surface dimensions appear... This design addresses issues such as inconsistent workpiece size and reduced workpiece quality, while also mitigating problems like tool breakage, clamping loosening, and excessive noise caused by long-term vibration. After the tool holder 13 finishes machining, during the part retraction period, the vibration absorber 17 is controlled to move away from the tool holder 13. Then, the tool rack 8 moves to position the tool holder 13 required for the next step, and the vibration absorber 17 is connected to the tool holder 13 again. At this point, the part moves forward again for machining, ensuring a smooth workflow and reducing the time required for each step, thus guaranteeing machining efficiency. It also features a positioning function because the vibration absorber 17 maintains a constant horizontal height. When the vibration absorber 17 is paired with the tool holder 13, the control data of the lifting table 7 can be calibrated to further ensure machining accuracy and reduce errors. Furthermore, the pluggable vibration absorber 17 does not affect the high-speed lifting and lowering switching of the tool rack 8; it only engages during machining.

[0022] The vibration absorber 17 is composed of a transmission rod 25, an adsorption block 26 and a damping ball 24. The adsorption block 26 and the damping ball 24 are respectively connected to the two ends of the transmission rod 25. The damping ball 24 is hollow inside, and a solid ball 31 is disposed inside the damping ball 24. During operation, the adsorption block 26 can be fixed to the outside of the tool holder 13. When the tool holder 13 vibrates due to friction, the vibration is transmitted to the damping ball 24 through the transmission rod 25, causing the damping ball 24 to shake. At the same time, the internal solid ball 31 moves internally. The vibration energy is consumed by the collision loss and friction loss of the solid ball 31. At the same time, the inertial lag of the solid ball 31 can also effectively counteract the vibration, thereby reducing the vibration of the tool holder 13, thereby improving the machining quality and increasing the tool life.

[0023] The outer casing 1 of the machine is also provided with a pick-up seat 22 that is flush with the main spindle table 11. The pick-up seat 22 has a recycling groove at one end facing the main spindle table 11. Multiple pick-up arms 27 for picking up and releasing damping balls 24 are installed in the recycling groove. During operation, when the tool bar 13 moves to be flush with the part, the vibration absorber 17 will be flush with the tool bar 13. The take-up seat 22 can push the vibration absorber 17 outward, so that the adsorption block 26 is attached and fixed to the tool bar 13. The take-up seat 22 does not contact the damping ball 24. When the tool bar 13 finishes working, the take-up seat 22 can pull the damping ball 24 back and remove the entire vibration absorber 17 from the tool bar 13, waiting for the next ejection operation. The recycling groove is used to place the damping ball 24.

[0024] The surface of the blade 13 is provided with a docking groove 19 that is adapted to the adsorption block 26. The inside of the docking groove 19 is cylindrical. The adsorption block 26 is made of magnetic material, and the bottom of the docking groove 19 is also made of magnetic material. During operation, as the vibration absorber 17 is pushed out, the adsorption block 26 will be inserted into the docking groove 19. Under the magnetic attraction, the adsorption block 26 will be fixed in the docking groove 19 to complete the temporary connection. It will only be separated from the docking groove 19 when the take-up seat 22 is pulled back.

[0025] The bottom of the docking groove 19 is equipped with a connecting groove, the end of the knife bar 13 is provided with a spray hole 20 that docks with the connecting groove, the inside of the vibration absorber 17 is provided with a transmission channel, and the bottom of the pick-up seat 22 is connected to the damping ball 24 with a spiral tube 30. During operation, after the adsorption block 26 and the docking groove 19 are connected, coolant can be filled into the spiral tube 30. The coolant is injected into the spray hole 20 through the internal transmission channel of the vibration absorber 17. The spray hole 20 is located above the end of the tool holder 13, which is exactly the contact point between the part and the tool holder 13. At the same time, the spray hole 20 diffuses the coolant outward, which can accurately cool the machining area. This setting solves the problem of difficulty in locating the coolant spray point in the gang tool machine tool due to the constant changes in the tool and machining position.

[0026] The gripping arm 27 is arc-shaped. A rotating seat 28 for controlling the rotation of the gripping arm 27 is connected to the outer rear end of the gripping arm 27. Both ends of the gripping arm 27 are made of magnetic material. The outer side of the damping ball 24 is fitted with a patch that matches the two ends of the gripping arm 27. During operation, the arc-shaped gripping arm 27 rotates under the drive of the rotating seat 28. Multiple gripping arms 27 are arranged in a ring at equal intervals to stably grip the damping ball 24. Since the gripping arm 27 is arc-shaped and its rotation position is in the middle and rear, when it is necessary to push the damping ball 24 outward, the gripping arm 27 will open outward as it rotates. At the same time, the rear end of the gripping arm 27 will press against the damping ball 24 and push the damping ball 24 outward until the adsorption block 26 is in contact with the docking groove 19. When it is necessary to recycle the damping ball 24, the gripping arm 27 only needs to rotate. At this time, the front end of the gripping arm 27 will contact, squeeze and pull back the damping ball 24 during the rotation, thereby pulling the damping ball 24 into the recycling groove and completing the recycling work of the vibration absorber 17. The patch is designed to reduce the damage to the damping ball 24 during the squeezing process.

[0027] Multiple replacement seats 21 are provided above the taking seat 22. The front end of the replacement seat 21 grips a replacement ball 23 that can be connected to the transfer rod 25. Different replacement balls 23 have different damping effects. The end of the spiral tube 30 and the damping ball 24 are detachable. During operation, the required damping varies depending on the specific needs. The solid balls 31 in different replacement balls 23 have different volumes and different damping effects. Different replacement balls 23 can be used according to different needs.

[0028] The inside of the retrieval seat 22 is fixedly connected to a horizontally arranged electric telescopic rod 29. The end of the electric telescopic rod 29 is equipped with a disassembly head. The end of the spiral tube 30 is connected to the damping ball 24 through a disassembly shaft. During operation, when replacing the damping ball 24, the electric telescopic rod 29 is extended to approach the disassembly head to adsorb and remove the disassembly shaft at the end of the spiral tube 30, allowing the damping ball 24 to be replaced. Then, the entire vibration absorber 17 is adsorbed onto the tool bar 13 and moved with the tool bar 13 to the replacement seat 21 above. First, it is moved to the empty replacement seat 21 to remove the damping ball 24, and then moved to the pick-up seat 22 where the replacement ball 23 is stored for replacement.

[0029] The replacement seat 21 has the same structure as the picking seat 22 and is also equipped with multiple gripping arms 27. The front end of the replacement seat 21 is a rotatable structure, and the rotating seat 28 of the replacement seat 21 is fixedly connected to the rotatable structure. During operation, the damping ball 24 and the transmission rod 25 can be connected by a screw connection. After the gripping arm 27 on the replacement seat 21 fixes the damping ball 24, the damping ball 24 can be removed by rotation. The new replacement ball 23 can also be fixed by screw tightening. The connection between the damping ball 24 and the transmission rod 25 can also be completed by other existing technologies.

[0030] A vertically arranged locking platform 9 is fixed between the rear ends of the take-up seat 22 and the multiple replacement seats 21. A filling valve 3 is fixed to the rear end of the locking platform 9. The filling valve 3 is fixed to the machine housing 1. An observation window 4 is installed at the front end of the machine housing 1. A feeding valve 2 communicating with the spindle table 11 is installed on the outside of the machine housing 1. During operation, coolant is filled into the spiral tube 30 through the filling valve 3. The feeding valve 2 is connected to the spindle table 11, which can directly transport the required parts into the equipment for processing from the outside.

[0031] During operation, the part to be machined is fixed at the end of the spindle table 11. The spindle table 11 rotates itself, thereby rotating the part. The drive table 10 is controlled to move horizontally, which in turn moves the spindle table 11 and the part horizontally. Simultaneously, the lifting table 7 controls the lifting of the tool holder 8, moving the required tool holder 13 to the same horizontal height as the part. Then, the part is moved close to the cutting tool section at the end of the tool holder 13. At this point, the end of the tool holder 13 is located on the outer side and slightly below the part, rubbing against the part for cutting. Different types of tool holders 13 can be fixed to the tool holder 8 from top to bottom. First, the tool holder 13 is connected to the connecting strip 12, and then the connecting strip 12 is fixed to the tool holder 8 with bolts. This allows for the selection of the required tool holders according to the specific needs. The required cutting tool is moved around the part for machining; each time the tool holder 8 is adjusted, the part needs to be moved back and forth synchronously to avoid collision between the tool and the part during the movement; it can also fix a stationary drill bit for horizontal drilling of the part; when vertical drilling and milling are required, the power head 14 is controlled to sink above the part, and a drill bit 15 or a milling cutter 16 can be installed at the output end of the power head 14. While keeping the part stationary, vertical drilling and milling are completed on the part. It should be noted that the drill bit closer to the tool holder 8 needs to be longer than the drill bit farther away from the tool holder 8 to ensure that the two can work independently; power heads 14 in opposite directions can also be installed at the bottom of the tool holder 8, thereby increasing the types of tool heads that can be installed, and thus completing the function of composite CNC machining; When the tool holder 13 is machining the part, the lifting table 7 controls the tool rack 8 to move until it is flush with the part. At this time, the vibration absorber 17 is controlled to align with the position of the tool holder 13 near the end. After the tool holder 13 moves to the predetermined position, it does not need to move further. Subsequent machining relies on the part actively moving towards the end of the tool holder 13 to complete the turning work. Therefore, the tool holder 13 and the vibration absorber 17 remain in a horizontal position, and the tool holder 13 is located at the lower edge of the part. So no matter how the part moves forward, it will not contact the vibration absorber 17, ensuring smooth machining. During the turning process, the vibration of the tool holder 13 at the tool head position with the largest vibration amplitude will be transmitted to the vibration absorber 17, which is also close to the tool head position. The vibration absorber 17 can absorb and cancel the vibration, thereby reducing the problem of machining accuracy attenuation caused by tool head vibration. If workpiece vibration marks or workpiece surface dimensions appear... This design addresses issues such as inconsistent workpiece size and reduced workpiece quality, while also mitigating problems like tool breakage, clamping loosening, and excessive noise caused by long-term vibration. After the tool holder 13 finishes machining, during the part retraction period, the vibration absorber 17 is controlled to move away from the tool holder 13. Then, the tool rack 8 moves to position the tool holder 13 required for the next step, and the vibration absorber 17 is connected to the tool holder 13 again. At this point, the part moves forward again for machining, ensuring a smooth workflow and reducing the time required for each step, thus guaranteeing machining efficiency. It also features a positioning function because the vibration absorber 17 maintains a constant horizontal height. When the vibration absorber 17 is paired with the tool holder 13, the control data of the lifting table 7 can be calibrated to further ensure machining accuracy and reduce errors. Furthermore, the pluggable vibration absorber 17 does not affect the high-speed lifting and lowering switching of the tool rack 8; it only engages during machining.

[0032] The adsorption block 26 can be fixed to the outside of the tool holder 13. When the tool holder 13 vibrates due to friction, the vibration is transmitted to the damping ball 24 through the transmission rod 25, causing the damping ball 24 to shake. At the same time, the internal solid ball 31 moves internally. The vibration energy is consumed by the collision loss and friction loss of the solid ball 31. At the same time, the inertial lag of the solid ball 31 can also effectively cancel the vibration, thereby realizing the function of reducing the vibration of the tool holder 13, thereby improving the machining quality and increasing the tool life.

[0033] When the tool bar 13 moves to be flush with the part, the vibration absorber 17 will be flush with the tool bar 13. The take-up seat 22 can push the vibration absorber 17 outward, so that the adsorption block 26 is attached and fixed to the tool bar 13. The take-up seat 22 does not contact the damping ball 24. When the tool bar 13 finishes working, the take-up seat 22 can pull the damping ball 24 back and remove the entire vibration absorber 17 from the tool bar 13, waiting for the next ejection operation. The recycling groove is used to place the damping ball 24.

[0034] As the vibration absorber 17 is ejected, the adsorption block 26 will be inserted into the docking groove 19, and under the magnetic attraction, the adsorption block 26 will be fixed in the docking groove 19 to complete the temporary connection. It will only be separated from the docking groove 19 when the take-up seat 22 is pulled back.

[0035] After the adsorption block 26 and the docking groove 19 are connected, coolant can be filled into the spiral tube 30. The coolant is injected into the spray hole 20 through the internal transmission channel of the vibration absorber 17. The spray hole 20 is located above the end of the tool holder 13, which is exactly the contact point between the part and the tool holder 13. At the same time, the spray hole 20 diffuses the coolant outward, which can accurately cool the machining area. This setting solves the problem of difficulty in locating the coolant spray point in the gang tool machine tool due to the constant changes in the tool and machining position.

[0036] The arc-shaped gripping arm 27 can rotate under the drive of the rotating seat 28. Multiple gripping arms 27 are arranged in a ring at equal intervals to stably grip the damping ball 24. Since the gripping arm 27 is arc-shaped and its rotation position is in the middle and rear, when it is necessary to push the damping ball 24 outward, the gripping arm 27 will open outward as it rotates. At the same time, the rear end of the gripping arm 27 will press against the damping ball 24 and push the damping ball 24 outward until the adsorption block 26 is in contact with the docking groove 19. When it is necessary to recycle the damping ball 24, the gripping arm 27 only needs to rotate. At this time, the front end of the gripping arm 27 will contact, squeeze and pull back the damping ball 24 during the rotation, thereby pulling the damping ball 24 into the recycling groove and completing the recycling work of the vibration absorber 17. The patch is designed to reduce the damage to the damping ball 24 during the squeezing process.

[0037] The required damping varies depending on the specific needs. The solid ball 31 in different replacement balls 23 has a different volume and a different damping effect. Different replacement balls 23 can be used according to different needs.

[0038] When replacing the damping ball 24, first extend the electric telescopic rod 29 to approach the disassembly head and remove the disassembly shaft at the end of the spiral tube 30 so that the damping ball 24 can be replaced. Then, attach the entire vibration absorber 17 to the tool bar 13 and move it to the replacement seat 21 above. First, move it to the empty replacement seat 21, remove the damping ball 24, and then move it to the pick-up seat 22 where the replacement ball 23 is stored for replacement.

[0039] The damping ball 24 and the transmission rod 25 can be connected by a screw connection. After the gripping arm 27 on the replacement seat 21 fixes the damping ball 24, the damping ball 24 can be removed by rotation. The new replacement ball 23 can also be fixed by screw tightening. The connection between the damping ball 24 and the transmission rod 25 can also be completed by other existing technologies.

[0040] Coolant is filled into the spiral tube 30 by filling valve 3, and the feed valve 2 is connected to the spindle table 11, so that the required parts can be directly transported from the outside to the inside of the equipment for processing.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite CNC machine tool based on metal processing, characterized in that: The machine includes a housing, a power platform and a back plate fixed inside the housing. The power platform is fixed to the front end of the back plate, and a vertically mounted lifting platform is also fixed to the front end of the back plate. A tool rack is fixed to the output end of the lifting platform. A drive platform capable of horizontal movement is installed at the bend of the power platform, and a spindle table for fixing the workpiece is fixed to the end of the drive platform. Multiple connecting rows are installed on the surface of the tool rack. A powered tool head is fixed to the uppermost connecting row, and different types of tool holders are fixed to the remaining connecting rows. A vibration absorber capable of connecting and separating from the tool holder is also installed inside the housing. The vibration absorber is on the same horizontal plane as the spindle table.

2. The composite CNC machine tool based on metal processing according to claim 1, characterized in that: The vibration absorber consists of a transmission rod, an adsorption block, and a damping ball. The adsorption block and the damping ball are respectively connected to both ends of the transmission rod. The damping ball is hollow inside, and a solid ball is disposed inside the damping ball.

3. A composite CNC machine tool based on metal processing according to claim 2, characterized in that: The machine housing is also equipped with a pick-up seat that is flush with the spindle table. The pick-up seat has a recycling groove at one end facing the spindle table, and multiple gripping arms for gripping and releasing damping balls are installed in the recycling groove.

4. A composite CNC machine tool based on metal processing according to claim 3, characterized in that: The surface of the blade holder is provided with a docking groove that is adapted to the adsorption block. The inside of the docking groove is cylindrical. The adsorption block is made of magnetic material, and the bottom of the docking groove is also made of magnetic material.

5. A composite CNC machine tool based on metal processing according to claim 4, characterized in that: A connecting groove is installed at the bottom of the docking groove, and a spray hole that connects with the connecting groove is opened at the end of the knife bar. A transmission channel is opened inside the vibration absorber, and a spiral tube is connected between the bottom of the pick-up seat and the damping ball.

6. A composite CNC machine tool based on metal processing according to claim 5, characterized in that: The gripping arm is arc-shaped, and a rotating seat for controlling the rotation of the gripping arm is connected to the outer rear end of the gripping arm. Both ends of the gripping arm are made of magnetic material, and the outer side of the damping ball is fitted with a patch that matches the two ends of the gripping arm.

7. A composite CNC machine tool based on metal processing according to claim 6, characterized in that: Multiple replacement seats are provided above the picking seat. The front end of each replacement seat grips a replacement ball that can connect with the transmission rod. Different replacement balls have different damping effects. The end of the spiral tube is detachable from the damping ball.

8. A composite CNC machine tool based on metal processing according to claim 7, characterized in that: The inside of the retrieval seat is fixedly connected to a horizontally arranged electric telescopic rod, and the end of the electric telescopic rod is equipped with a disassembly head. The end of the spiral tube is connected to a damping ball through a disassembly shaft.

9. A composite CNC machine tool based on metal processing according to claim 8, characterized in that: The replacement seat structure is the same as the pick-up seat, and it is also equipped with multiple gripping arms. The front end of the replacement seat is a rotatable structure, and the rotating seat of the replacement seat is fixedly connected to the rotatable structure.

10. A composite CNC machine tool based on metal processing according to claim 9, characterized in that: A vertically arranged locking platform is fixedly connected between the rear ends of the pick-up seat and the multiple replacement seats. A filling valve is fixedly connected to the rear end of the locking platform. The filling valve is fixedly connected to the machine housing. An observation window is installed at the front end of the machine housing. A feeding valve communicating with the spindle table is installed on the outside of the machine housing.

Images