Numerical control machine tool servo power turret with protection structure

Abstract

The application relates to the technical field of servo power tool towers, in particular to a numerical control machine tool servo power tool tower with a protection structure, which comprises a main body, a tool holder is arranged on one side of the main body, a driving motor is arranged on the other side of the main body, a plurality of groups of mounting grooves are circumferentially distributed on the outer side of the tool holder, a tool seat is detachably connected in the mounting grooves, mounting holes for mounting turning tools are arranged on one side of the tool seat; through the cooperative work of the main channel and the auxiliary channel, when an old tool is inserted into the tool seat, the extrusion adjusting assembly automatically connects the auxiliary channel, a double circulation mode of the main channel conventional cooling and the auxiliary channel directional cooling is formed, the main channel is responsible for the basic temperature reduction of the tool holder and all the tool seats, the auxiliary channel targets the high-temperature old tool area for cooling, compared with a traditional single cooling system, the old tool temperature reduction efficiency can be improved, the tool seat material aging and deformation caused by high temperature can be avoided, the tool tower part wear rate can be effectively reduced, and the equipment service life can be significantly prolonged.

Description

Technical Field

[0001] This invention relates to the field of servo power turret technology, and more specifically to a CNC machine tool servo power turret with a protective structure. Background Technology

[0002] In the field of modern machining, CNC machine tool servo power turrets, as core components for achieving efficient and high-precision machining, are widely used in machining various complex parts. During operation, the rotation of the cutting tool in existing CNC machine tool servo power turrets usually relies on the meshing transmission between gears. The friction between gears inevitably generates a large amount of heat. At the same time, when the cutting tool is cutting external parts, significant heat is also generated due to the cutting force and material deformation. This heat is difficult to dissipate quickly in the enclosed working environment, causing the working environment temperature to rise sharply. High temperatures will cause the viscosity of the lubricating grease inside the turret to decrease, weakening the lubrication performance, aggravating the wear of parts, and shortening their service life.

[0003] Furthermore, during tool changing, the used tool, having been engaged in cutting for an extended period, reaches a high temperature. When this hot tool is inserted into the tool holder, the excessive temperature accelerates the aging and deformation of the tool holder material, reducing its positioning accuracy. Simultaneously, the heat from the old tool is transferred to other components of the turret, further increasing the overall temperature and exacerbating the risk of damage to internal parts, leading to higher equipment failure rates and maintenance costs. Therefore, this paper proposes a CNC machine tool servo-powered turret with a protective structure. This design facilitates cooling and protection during tool changing and operation, ensuring normal operation and service life of the turret, and improving the machining quality and production efficiency of the CNC machine tool. Summary of the Invention

[0004] To address the problems in the existing technology, this invention provides a CNC machine tool servo power turret with a protective structure, which facilitates cooling protection of the CNC machine tool servo power turret during tool changing and operation, ensures the normal operation and service life of the turret, and improves the machining quality and production efficiency of the CNC machine tool.

[0005] The technical solution adopted by this invention to solve its technical problem is a CNC machine tool servo power turret with a protective structure, including a main body. A tool holder is provided on one side of the main body, and a drive motor is provided on the other side of the main body. Several sets of mounting slots are distributed on the outer circumference of the tool holder. A tool holder is detachably connected in the mounting slot. A mounting hole for mounting a turning tool is provided on one side of the tool holder. A liquid supply channel and a liquid return channel are provided in the tool holder. A main channel and a secondary channel are provided in the tool holder, connecting the liquid supply channel and the liquid return channel. A compression adjustment component is provided in the mounting hole to connect the secondary channel after the turning tool is installed. A liquid supply component connected to the main liquid supply channel and the liquid return channel is provided on the top of the main body.

[0006] Specifically, the extrusion adjustment assembly includes a pneumatic telescopic rod horizontally disposed in the mounting hole. The output end of the pneumatic telescopic rod passes through the mounting hole and is fixedly connected to a movable plate. The fixed end of the pneumatic telescopic rod is provided with a damping exhaust hole. One side of the cutter holder is provided with a first sliding hole communicating with the secondary channel. A first sliding rod for disconnecting the secondary channel is slidably connected in the first sliding hole. One end of the first sliding rod is fixedly connected to one side of the movable plate. A first damping spring is fixedly connected between the side of the movable plate near the first sliding rod and the cutter holder.

[0007] Specifically, the tool holder is provided with a first liquid inlet and a first liquid outlet corresponding to the main channel, and a second liquid inlet and a second liquid outlet corresponding to the auxiliary channel on the side near the tool holder; the mounting groove is provided with a first through hole corresponding to the first liquid inlet and the second liquid inlet and communicating with the liquid supply channel, and a second through hole corresponding to the first liquid outlet and the second liquid outlet and communicating with the liquid return channel.

[0008] Specifically, the liquid supply assembly includes a drive housing located above the main body. A horizontally arranged reciprocating screw is provided inside the drive housing. A vertically arranged sealing plate is connected to the reciprocating screw via a sealing thread. The sealing plate is slidably connected to the inner wall of the drive housing. One end of the reciprocating screw passes through the drive housing and is driven by a drive motor. The reciprocating screw is rotatably connected to the drive housing in a sealed manner. A liquid storage tank is provided on one side of the drive housing. A liquid extraction connector and a liquid discharge connector are connected to one side of the drive housing. The liquid extraction connector is connected to the inside of the liquid storage tank through a pipeline.

[0009] Specifically, the output shaft of the drive motor is fixedly connected to one side of the tool holder via a rotary joint, one end of the liquid supply channel is connected to the liquid drain connector via a rotary joint, and the other end of the liquid return channel is connected to the liquid storage tank via a rotary joint.

[0010] Specifically, a first pulley is mounted on the output shaft of the drive motor, and a second pulley is fixedly connected to one end of the reciprocating lead screw. The first pulley and the second pulley are driven by a transmission belt.

[0011] Specifically, an air storage chamber is formed between the side of the sealing plate away from the drain connector and the inside of the drive housing. The end of the drive housing away from the drain connector is connected to a one-way exhaust connector and a one-way intake valve. An air storage tank is provided on one side of the drive housing. The one-way exhaust connector is connected to the inside of the air storage tank through a pipeline.

[0012] The tool holder is provided with an air supply channel, one end of which is connected to an air storage tank via a rotary joint. The tool holder is provided with a vent hole, and each mounting slot is provided with an air outlet hole connected to the air supply channel. The side of the tool holder near the mounting slot is provided with an air inlet hole corresponding to the air outlet hole, and the air inlet hole is connected to the vent hole. One side of the tool holder is provided with a second sliding hole connected to the vent hole. A second sliding rod for disconnecting the vent hole is slidably connected in the second sliding hole. One end of the second sliding rod is fixedly connected to a moving plate. The side of the tool holder away from the moving plate is provided with several sets of air nozzles connected to the vent hole. A second damping spring is fixedly connected between the side of the moving plate near the second sliding rod and the tool holder.

[0013] Specifically, the damping exhaust hole is provided with an assembly groove, and the assembly groove is provided with a thermal expansion strip.

[0014] Specifically, a heat-conducting plate is fixedly connected to the fixed end of the pneumatic telescopic rod.

[0015] The beneficial effects of this invention are:

[0016] (1) The CNC machine tool servo power turret with protective structure described in this invention, through the coordinated work of the main channel and the secondary channel, when the old tool is inserted into the tool holder, the extrusion adjustment component automatically connects the secondary channel, forming a dual circulation mode of conventional cooling of the main channel and directional cooling of the secondary channel. The main channel is responsible for the basic cooling of the tool holder and all tool holders, while the secondary channel is targeted to cool the high-temperature old tool area. Compared with the traditional single cooling system, it can improve the cooling efficiency of the old tool, avoid the aging and deformation of the tool holder material caused by high temperature, effectively reduce the wear rate of the turret components, and significantly extend the service life of the equipment.

[0017] (2) The CNC machine tool servo power turret with protective structure described in this invention uses compressed air to reduce the temperature of the tool body by setting an air supply channel and an air nozzle, which avoids damage to the tool holder material and turret components caused by high temperature. At the same time, the airflow blows away the chips and coolant impurities remaining on the tool head, keeps the tool holder mounting hole clean, and improves the subsequent tool mounting accuracy.

[0018] (3) The CNC machine tool servo power turret with protective structure described in this invention has a thermal expansion strip in the damping exhaust hole that works with the heat conduction plate. When the temperature of the old tool rises, the thermal expansion strip expands and reduces the cross-sectional area of ​​the exhaust hole, extending the opening time of the secondary channel. The higher the temperature, the longer the cooling time is automatically extended, realizing adaptive adjustment of the cooling time. At the same time, the higher the temperature, the longer the ventilation hole is opened, and the blowing time is extended synchronously, realizing intelligent control of high temperature long blowing and low temperature short blowing. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is an isometric view of the present invention;

[0021] Figure 2 This is a diagram of the tool holder of the present invention;

[0022] Figure 3 This is an isometric view of the tool holder of the present invention;

[0023] Figure 4 This is a schematic diagram of the main structure of the present invention;

[0024] Figure 5 for Figure 4 Enlarged view of region A;

[0025] Figure 6 This is a schematic diagram of the bottom structure of the tool holder of the present invention;

[0026] Figure 7 This is a schematic cross-sectional view of the tool holder structure of the present invention;

[0027] Figure 8 for Figure 7 Enlarged view of region B;

[0028] Figure 9 for Figure 7 Enlarged view of region C;

[0029] Figure 10 This is a schematic cross-sectional view of the drive housing structure of the present invention;

[0030] In the diagram: 1. Main body; 2. Tool holder; 3. Drive motor; 4. Mounting slot; 5. Tool holder; 6. Mounting hole; 7. Main channel; 8. Secondary channel; 9. Pneumatic telescopic rod; 10. Moving plate; 11. Damping vent; 12. First sliding hole; 13. First slide rod; 14. First damping spring; 15. First liquid inlet; 16. First liquid outlet; 17. Second liquid inlet; 18. Second liquid outlet; 19. First through hole; 20. Second through hole; 21. Drive housing; 22. Reciprocating screw 23. Rod; 24. Sealing plate; 25. Liquid storage tank; 26. Liquid extraction connector; 27. Liquid drainage connector; 28. Rotary joint; 29. ​​First pulley; 20. Second pulley; 31. Drive belt; 32. One-way exhaust connector; 33. One-way air inlet valve; 34. Air storage tank; 35. Heat-conducting plate; 36. Vent hole; 37. Air outlet hole; 38. Air inlet hole; 39. Second sliding hole; 40. Air nozzle; 41. Second damping spring; 42. Assembly slot; 43. Thermal expansion strip. Detailed Implementation

[0031] 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.

[0032] To facilitate cooling and protection of the servo power turret of CNC machine tools during tool changing and operation, ensure the normal operation and service life of the turret, and improve the machining quality and production efficiency of CNC machine tools, as one embodiment of the present invention, such as... Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, the present invention discloses a CNC machine tool servo power turret with a protective structure, comprising a main body 1, a tool holder 2 on one side of the main body 1, a drive motor 3 on the other side of the main body 1, several sets of mounting slots 4 distributed around the outer circumference of the tool holder 2, a tool holder 5 detachably connected to the mounting slot 4, and mounting holes 6 for mounting turning tools on one side of the tool holder 5, a liquid supply channel and a liquid return channel are provided in the tool holder 2, and a main channel 7 and a secondary channel 8 connecting the liquid supply channel and the liquid return channel are provided in the tool holder 5, and a compression adjustment component that connects to the secondary channel 8 after mounting the turning tool is installed in the mounting hole 6, and a liquid supply component connected to the main liquid supply channel and the liquid return channel is provided on the top of the main body 1.

[0033] When using it, first, accurately install the tool holder 5 on the mounting slot 4 of the tool holder 2 to ensure a stable connection. At the same time, correctly install the cutting tool in the mounting hole 6 of the tool holder 5 so that the liquid supply channel and the liquid return channel in the tool holder 2 correspond to the main channel 7 and the auxiliary channel 8 on the tool holder 5, respectively.

[0034] When it is necessary to replace the cutting tool, first remove the used tool and then install it into the corresponding tool holder 5. During the process of inserting the old tool into the mounting hole 6, the compression adjustment component works, at which time the secondary channel 8 is connected. Then, the drive motor 3 drives the tool holder 2 to rotate, and at the same time, the liquid supply component supplies liquid into the liquid supply channel and the main channel 7 in the tool holder 5. After the liquid has cooled the tool holder 5 and the tool holder 2, it is discharged through the return channel, forming a liquid circulation. This provides comprehensive cooling and temperature protection for all tool holders 5 and tool holder 2, effectively reducing the temperature of the turret, avoiding the decrease in accuracy and damage to components due to overheating, and ensuring the normal operation of the turret.

[0035] When the tool holder 5 with the old tool inserted rotates, the liquid in the liquid supply assembly will not only enter the main channel 7 through the liquid supply channel, but will also enter the secondary channel 8 in the tool holder 5, thereby achieving a dual cooling effect. This will further improve the cooling efficiency of the used tool, reduce the temperature of the old tool more quickly, ensure the cooling effect, extend the tool's service life, and reduce tool wear costs.

[0036] After the tool holder 2 rotates to a certain position under the drive of the drive motor 3, it takes out the turning tool to be used in another set of tool holders 5 and installs it on the machining table of the machine tool. Then, the machine tool is started to carry out machining operations. The efficient cooling design ensures the stable operation of the tool turret and improves production efficiency.

[0037] To rapidly reduce the temperature of the old tool within a short time, and to prevent damage to the material of the tool holder 5 and other components of the turret from high temperatures. For example, such as... Figure 7 , Figure 8 , Figure 9 As shown, the present invention also includes the following: the extrusion adjustment assembly includes a pneumatic telescopic rod 9 horizontally disposed in the mounting hole 6; the output end of the pneumatic telescopic rod 9 passes through the mounting hole 6 and is fixedly connected to a moving plate 10; the fixed end of the pneumatic telescopic rod 9 is provided with a damping exhaust hole 11; one side of the cutter holder 5 is provided with a first sliding hole 12 communicating with the secondary channel 8; a first sliding rod 13 for disconnecting the secondary channel 8 is sealed and slidably connected in the first sliding hole 12; one end of the first sliding rod 13 is fixedly connected to one side of the moving plate 10; and a first damping spring 14 is fixedly connected between the side of the moving plate 10 near the first sliding rod 13 and the cutter holder 5.

[0038] During use, when the used tool is inserted into the mounting hole 6 of the tool holder 5, one end of the tool body presses against the fixed end of the pneumatic telescopic rod 9. The output end of the pneumatic telescopic rod 9 is fixedly connected to the moving plate 10. Therefore, the pressing force of the cutting tool will push the pneumatic telescopic rod 9 towards the output end. The fixed end of the pneumatic telescopic rod 9 is provided with a damping exhaust hole 11. The gas in the hole needs to be discharged slowly, thereby limiting the moving speed of the pneumatic telescopic rod 9 and avoiding impact to the parts caused by instantaneous displacement. At the same time, the movement of the pneumatic telescopic rod 9 drives the moving plate 10 fixedly connected to it. 0. The moving plate 10 drives the first slide rod 13 to slide in the first sliding hole 12 through a mechanical connection. In the initial state, the first slide rod 13 is inserted into the secondary channel 8, which serves to disconnect the secondary channel 8. When the moving plate 10 drives the first slide rod 13 to move outward, the first slide rod 13 gradually disengages from the entrance of the secondary channel 8, and the obstruction is removed. After the first slide rod 13 is removed, the secondary channel 8 is connected to the liquid supply channel in the tool holder 2. At this time, the cooling liquid output by the liquid supply assembly can flow through the main channel 7 and the secondary channel 8 at the same time, forming a dual cooling circuit.

[0039] The drive motor 3 drives the tool holder 2 to rotate, and the liquid supply assembly works. The liquid supply assembly pressurizes the liquid into the main channel 7 and the secondary channel 8 of the tool holder 5 through the liquid supply channel. The main channel 7 is responsible for the conventional cooling of the tool holder 5, while the secondary channel 8, because it is connected after the old tool is inserted, can provide additional cooling for the tool holder 5 and the old tool, forming a dual cooling system of the main channel 7 and the secondary channel 8. The coolant in the main channel 7 flows through the main body 1 of the tool holder 5, reducing the base temperature of the tool holder 5. The coolant in the secondary channel 8 flows directly to the old tool installation area, providing targeted cooling for the high-temperature old tool, accelerating the heat dissipation of the old tool, and causing the temperature of the old tool to drop rapidly in a short time, avoiding damage to the material of the tool holder 5 and other components of the tool turret due to high temperature.

[0040] After the old blade cools down for a period of time, the gas inside the pneumatic telescopic rod 9 is gradually discharged through the damping exhaust hole 11, and the internal air pressure decreases. Under the elastic force of the first damping spring 14, the moving plate 10 resets. When the moving plate 10 resets, it drives the first slide rod 13 to slide towards the inlet of the secondary channel 8 until the first slide rod 13 inserts into the secondary channel 8, cutting off the connection between the secondary channel 8 and the liquid supply channel. At this time, the coolant of the liquid supply component circulates only through the main channel 7, and the secondary channel 8 stops working to avoid wasting coolant. Moreover, the secondary channel 8 only works when the old blade is inserted and automatically cuts off after cooling is completed. No manual intervention is required. Automatic reset is achieved by relying on the mechanical structure of the pneumatic telescopic rod 9 and the first damping spring 14, reducing operation steps and ensuring the normal operation and service life of the turret.

[0041] To complete the liquid cooling cycle, for example, such as Figure 1 , Figure 2 , Figure 6 As shown, the present invention further includes: the tool holder 5 is provided with a first liquid inlet hole 15 and a first liquid outlet hole 16 corresponding to the main channel 7, and a second liquid inlet hole 17 and a second liquid outlet hole 18 corresponding to the auxiliary channel 8 on the side near the tool holder 2; the mounting groove 4 is provided with a first through hole 19 corresponding to the first liquid inlet hole 15 and the second liquid inlet hole 17 and communicating with the liquid supply channel, and a second through hole 20 corresponding to the first liquid outlet hole 16 and the second liquid outlet hole 18 and communicating with the liquid return channel.

[0042] In use, after the tool holder 5 is installed into the mounting slot 4, the first liquid inlet hole 15 of the tool holder 5 is aligned with the first through hole 19 of the mounting slot 4, so that the liquid supply channel is connected to the main channel 7 through the first through hole 19 and the first liquid inlet hole 15. The liquid in the main channel 7 flows into the return channel through the first liquid outlet hole 16 and the second through hole 20 of the mounting slot 4. Similarly, after the tool holder 5 is installed, the second liquid inlet hole 17 is aligned with the first through hole 19 of the mounting slot 4, so that the liquid supply channel is connected to the secondary channel 8 through the first through hole 19 and the second liquid inlet hole 17. The liquid in the secondary channel 8 flows into the return channel through the second liquid outlet hole 18 and the second through hole 20 of the mounting slot 4.

[0043] When the liquid supply assembly is working, the liquid is diverted through the first through hole 19 of the mounting groove 4. Part of the liquid flows into the main channel 7 through the first liquid inlet hole 15 of the tool holder 5 to cool the main body 1 of the tool holder 5. The other part of the liquid flows into the secondary channel 8 through the second liquid inlet hole 17 of the tool holder 5. When the secondary channel 8 is connected by the squeezing adjustment assembly, it provides directional cooling to the area where the old tool is installed.

[0044] After heat exchange, the cooling liquid in the main channel 7 flows out from the first liquid outlet 16 of the tool holder 5 and flows into the return channel of the tool holder 2 through the second through hole 20 of the mounting groove 4. If the liquid in the secondary channel 8 is in the connected state, it flows out from the second liquid outlet 18 of the tool holder 5 and flows into the return channel through the second through hole 20 of the mounting groove 4. The liquid in the return channel is discharged to complete the liquid cooling cycle.

[0045] The coolant flowing in the supply and return channels can cool the tool holder 2, preventing it from absorbing ambient temperature or generating excessive heat during operation, which could lead to overheating.

[0046] To facilitate the circulation of the liquid, for example, such as Figure 4 , Figure 5 , Figure 7 , Figure 10 As shown, the present invention further includes a liquid supply assembly comprising a drive housing 21 disposed above the main body 1. A horizontally arranged reciprocating screw 22 is disposed within the drive housing 21. A vertically arranged sealing plate 23 is threadedly connected to the reciprocating screw 22. The sealing plate 23 is slidably connected to the inner wall of the drive housing 21. One end of the reciprocating screw 22 passes through the drive housing 21 and is driven by the drive motor 3. The reciprocating screw 22 is rotatably connected to the drive housing 21. A liquid storage tank 24 is disposed on one side of the drive housing 21. A liquid extraction connector 25 and a liquid discharge connector 26 are connected to one side of the drive housing 21. The liquid extraction connector 25 is connected to the interior of the liquid storage tank 24 via a pipeline.

[0047] When in use, the drive motor 3 rotates, driving the tool holder 2 to rotate, and at the same time driving the reciprocating screw 22 to rotate inside the drive housing 21. The rotation of the reciprocating screw 22 causes the sealing plate 23 to move horizontally along the axis. When the sealing plate 23 moves away from the liquid extraction connector 25, a negative pressure is formed inside the drive housing 21. The cooling liquid in the liquid storage tank 24 is drawn into the liquid extraction connector 25 through the pipeline and enters the drive housing 21. As the reciprocating screw 22 continues to rotate, it drives the sealing plate 23 to move in the opposite direction and reset. At this time, the sealing plate 23 squeezes the liquid inside the drive housing 21. Under the action of pressure, the liquid is discharged through the drain connector 26 and transported through the pipeline to the liquid supply channel of the tool holder 2, and then enters the main channel 7 and the secondary channel 8 of the tool holder 5 to realize the cooling cycle. After absorbing heat in the tool holder 5 and the tool holder 2, the cooling liquid returns to the liquid storage tank 24 through the return channel, forming a closed loop cycle.

[0048] The reciprocating screw 22 and the sealing plate 23 work together to achieve the suction and compression of liquid without the need for an additional power source. The structural characteristics of the reciprocating screw 22 determine the automatic reciprocating motion of the sealing plate 23. Periodic liquid delivery can be achieved without a complex electrical control system, reducing the failure rate and maintenance costs. At the same time, the liquid supply component is integrated on the top of the turret body 1, which is compact and does not occupy additional machine tool space, meeting the space utilization requirements of CNC machine tools.

[0049] For example, such as Figure 4 , Figure 5 As shown, the present invention also includes that the output shaft of the drive motor 3 is fixedly connected to one side of the tool holder 2 via a rotary joint 27, one end of the liquid supply channel is connected to the drain connector 26 via a rotary joint 27, and the other end of the return channel is connected to the storage tank 24 via a rotary joint 27.

[0050] In use, when the drive motor 3 starts, the rotation of the output shaft is transmitted to the tool holder 2 through the rotary joint 27, causing the tool holder 2 to rotate synchronously, realizing the tool changing function of the turret. When the liquid supply component is working, the cooling liquid output from the drain connector 26 flows into the liquid supply channel through the rotary joint 27, ensuring that the tool holder 2 is in a rotating state and can continuously receive liquid from the liquid supply component, completing the cooling and protection of the tool holder 2 and the tool holder 5. After absorbing heat, the liquid returns to the liquid storage tank 24 through the return channel via the rotary joint 27, completing the circulation. The rotary joint 27 realizes the mechanical transmission between the drive motor 3 and the tool holder 2, while ensuring the sealed connection between the liquid supply channel and the return channel when the tool holder 2 rotates, preventing liquid leakage and improving system reliability.

[0051] To facilitate the rotation of the reciprocating lead screw 22 within the drive housing 21, for example, as shown... Figure 4 , Figure 5 As shown, the present invention also includes a first pulley 28 mounted on the output shaft of the drive motor 3, and a second pulley 29 fixedly connected to one end of the reciprocating screw 22. The first pulley 28 and the second pulley 29 are driven by a transmission belt 30.

[0052] In use, after the drive motor 3 starts, the output shaft drives the first pulley 28 to rotate synchronously. The first pulley 28 transmits the rotational power to the second pulley 29 through the transmission belt 30, causing the second pulley 29, which is fixedly connected to one end of the reciprocating screw 22, to rotate accordingly. This drives the reciprocating screw 22 to rotate within the drive housing 21. The rotation of the reciprocating screw 22 causes the sealing plate 23 to move horizontally along the axial direction, realizing the suction and squeezing action of the cooling liquid. The drive motor 3 simultaneously drives the tool holder 2 to rotate and the liquid supply assembly to work, eliminating the need for an additional power source and reducing equipment complexity and energy consumption.

[0053] To facilitate lowering the cutter body temperature and cleaning residual chips and coolant impurities from the cutter head, for example, such as Figure 3 , Figure 4 , Figure 5 , Figure 10 As shown, the present invention further includes a gas storage cavity formed between the side of the sealing plate 23 away from the drain connector 26 and the interior of the drive housing 21, the end of the drive housing 21 away from the drain connector 26 being connected to a one-way exhaust connector 31 and a one-way intake valve 32, a gas storage tank 33 being provided on one side of the drive housing 21, and the one-way exhaust connector 31 being connected to the interior of the gas storage tank 33 through a pipeline.

[0054] The tool holder 2 is provided with an air supply channel. One end of the air supply channel is connected to the air storage tank 33 through a rotary joint 27. The tool holder 5 is provided with a vent hole 35. Each of the mounting slots 4 is provided with an air outlet hole 36 that is connected to the air supply channel. The side of the tool holder 5 near the mounting slot 4 is provided with an air inlet hole 37 that corresponds to the air outlet hole 36. The air inlet hole 37 is connected to the vent hole 35. One side of the tool holder 5 is provided with a second sliding hole 38 that is connected to the vent hole 35. A second sliding rod 39 for disconnecting the vent hole 35 is slidably connected in the second sliding hole 38. One end of the second sliding rod 39 is fixedly connected to the moving plate 10. The side of the tool holder 5 away from the moving plate 10 is provided with several sets of air nozzles 40 that are connected to the vent hole 35. A second damping spring 41 is fixedly connected between the side of the moving plate 10 near the second sliding rod 39 and the tool holder 5.

[0055] When in use, when the high-temperature old knife is inserted into the mounting hole 6 of the knife holder 5, the knife body squeezes the pneumatic telescopic rod 9 in the mounting hole 6, pushing the moving plate 10 to move away from the mounting hole 6. The moving plate 10 drives the second slide rod 39 to slide in the second sliding hole 38, so that the second slide rod 39 is disengaged from the sealed position of the vent hole 35. The vent hole 35 is connected to the air supply channel, and the air supply channel is connected to the rotary joint 27 and the air tank 33.

[0056] After the drive motor 3 starts, it drives the tool holder 2 to rotate via the rotary joint 27, moving the new tool to be used to the spindle tool holder of the machine tool processing station. At the same time, it rotates the tool holder 5 where the old tool is located away from the working area. The drive motor 3 drives the reciprocating screw 22 to rotate via the pulley drive 30. The sealing plate 23 makes reciprocating linear motion in the drive housing 21. The sealing plate 23 moves towards the drain joint 26, increasing the volume of the air storage chamber. Outside air is drawn in through the one-way air inlet valve 32. The sealing plate 23 moves in the opposite direction, compressing the air in the air storage chamber. The gas passes through... One-way exhaust connector 31 and pipeline enter the air storage tank 33 for storage. Compressed air in the air storage tank 33 enters the air supply channel of the tool holder 2 through the rotary connector 27, passes through the air outlet 36 of the mounting slot 4, the air inlet 37 and the vent 35 of the tool holder 5, and is finally ejected at high speed from the air nozzle 40. The high-speed airflow carries away the heat of the old tool head, helps to reduce the temperature of the tool body, and avoids high temperature damage to the tool holder 5 and the tool turret components. At the same time, the airflow blows away the chips and coolant impurities remaining on the tool head, keeps the mounting hole 6 of the tool holder 5 clean, and improves the subsequent tool mounting accuracy.

[0057] After the old knife is cooled and cleaned, the gas in the pneumatic telescopic rod 9 is discharged through the damping exhaust hole 11. Under the elastic force of the first damping spring 14 and the second damping spring 41, the moving plate 10 drives the second slide rod 39 to move in the opposite direction, re-seal the vent hole 35, cut off the connection between the air supply channel and the air nozzle 40, and stop blowing air.

[0058] When the sealing plate 23 reciprocates, it continuously compresses gas into the gas storage tank 33. Even if the air nozzle 40 of the current tool holder 5 is closed, the gas storage tank 33 can still store gas at a certain pressure. When the next set of old tools is inserted, the pre-stored gas in the gas storage tank 33 can be quickly sprayed out, realizing immediate insertion and blowing, improving cooling and cleaning efficiency, reducing waiting time, and forming a double protection by combining air blowing and liquid cooling, thus extending the service life of the tool and the tool turret.

[0059] For example, such as Figure 7 , Figure 8 As shown, the present invention also includes an assembly groove 42 provided in the damping vent 11, and a thermal expansion strip 43 provided in the assembly groove 42.

[0060] During use, when the hot old knife is inserted into the mounting hole 6 of the knife holder 5, the end of the knife body directly presses against the fixed end of the pneumatic telescopic rod 9. The heat of the old knife is transferred to the metal shell of the pneumatic telescopic rod 9 through this contact, causing the temperature of the pneumatic telescopic rod 9 to rise. This rise is conducted to the thermal expansion strip 43 inside the damping vent 11, causing it to expand in volume due to the thermal effect. The expanded thermal expansion strip 43 is pressed towards the pores of the damping vent 11, resulting in a reduction in the effective flow cross-sectional area of ​​the damping vent 11. When not heated, the pores of the damping vent 11 allow gas to escape at a normal speed; when the thermal expansion strip 43 expands, the pores... The gap is partially blocked, increasing the resistance to gas discharge and reducing the flow rate. The gas discharge from the pneumatic telescopic rod 9 is obstructed, which causes the moving plate 10 to drive the first slide rod 13 to keep the secondary channel 8 open for a longer period of time. The secondary channel 8 is continuously connected to the liquid supply channel, and the coolant can flow through the old knife installation area for a longer period of time, enhancing the directional cooling effect and accelerating the cooling of the old knife. At the same time, the moving plate 10 is kept in the displacement state for a longer period of time, which simultaneously drives the second slide rod 39 to keep the vent 35 open. The air nozzle 40 continuously sprays compressed air. The extended blowing time can more thoroughly clean the chips and impurities on the old knife head, while also assisting in heat dissipation.

[0061] The higher the temperature of the old tool, the greater the expansion of the thermal expansion strip 43, the more obvious the reduction of the pore size of the damping exhaust hole 11, the slower the gas discharge speed, and the longer the opening time of the secondary channel 8 and the vent hole 35. This achieves adaptive adjustment of the longer the cooling time as the temperature rises, avoiding excessive cooling of the old tool at low temperature and saving energy. At the same time, it can automatically extend the cooling and cleaning time for the old tool at high temperature to prevent the tool holder 5 from deforming or the tool turret components from being damaged by high temperature.

[0062] For example, such as Figure 7 , Figure 8 As shown, the present invention also includes a heat-conducting plate 34 fixedly connected to the fixed end of the pneumatic telescopic rod 9.

[0063] During use, the heat-conducting plate 34 is fixedly connected to the fixed end of the pneumatic telescopic rod 9 and directly contacts the end of the old knife inserted into the mounting hole 6. The high temperature of the old knife is quickly conducted through the heat-conducting plate 34 to the pneumatic telescopic rod 9 and the thermal expansion strip 43 in the damping exhaust hole 11, shortening the response time of the thermal expansion strip 43, making it expand faster and reduce the gap of the damping exhaust hole 11, thereby extending the circulation of coolant and the blowing cleaning time of the secondary channel 8 in a timely manner.

[0064] When using this invention, firstly, the tool holder 5 is precisely installed on the mounting groove 4 of the tool holder 2 to ensure a stable connection. At the same time, the lathe tool is correctly installed in the mounting hole 6 of the tool holder 5, so that the liquid supply channel and the liquid return channel in the tool holder 2 correspond to the main channel 7 and the auxiliary channel 8 on the tool holder 5, respectively.

[0065] When a cutting tool needs to be replaced, the used tool is first removed and then installed into the corresponding tool holder 5. During the insertion of the old tool into the mounting hole 6, one end of the tool body presses against the fixed end of the pneumatic telescopic rod 9. The output end of the pneumatic telescopic rod 9 is fixedly connected to the moving plate 10. Therefore, the pressure from the cutting tool will push the pneumatic telescopic rod 9 towards the output end. The fixed end of the pneumatic telescopic rod 9 is equipped with a damping exhaust hole 11, and the gas inside the hole must be slowly discharged, thereby limiting the movement speed of the pneumatic telescopic rod 9 and preventing impact from instantaneous displacement. Simultaneously, the movement of the pneumatic telescopic rod 9 drives... The movable plate 10, which is fixedly connected to it, moves synchronously. The movable plate 10 drives the first slide rod 13 to slide in the first sliding hole 12 through a mechanical connection. In the initial state, the first slide rod 13 is inserted into the secondary channel 8, which serves to disconnect the secondary channel 8. When the movable plate 10 drives the first slide rod 13 to move outward, the first slide rod 13 gradually disengages from the entrance of the secondary channel 8, and the obstruction is removed. After the first slide rod 13 is removed, the secondary channel 8 is connected to the liquid supply channel in the tool holder 2. At this time, the cooling liquid output by the liquid supply assembly can flow through the main channel 7 and the secondary channel 8 at the same time, forming a dual cooling circuit.

[0066] At the same time, the blade body squeezes the pneumatic telescopic rod 9 in the mounting hole 6, pushing the moving plate 10 to move away from the mounting hole 6. The moving plate 10 drives the second slide rod 39 to slide in the second sliding hole 38, so that the second slide rod 39 is disengaged from the sealed position of the vent hole 35. The vent hole 35 is connected to the air supply channel, and the air supply channel is connected to the rotary joint 27 and the air storage tank 33.

[0067] After the drive motor 3 starts, it drives the tool holder 2 to rotate through the rotary joint 27. At the same time, the output shaft of the drive motor 3 drives the first pulley 28 to rotate synchronously. The first pulley 28 transmits the rotational power to the second pulley 29 through the transmission belt 30, so that the second pulley 29, which is fixedly connected to one end of the reciprocating screw 22, rotates accordingly, thereby driving the reciprocating screw 22 to rotate inside the drive housing 21.

[0068] The rotation of the reciprocating screw 22 causes the sealing plate 23 to move horizontally along the axial direction. When the sealing plate 23 moves away from the liquid extraction joint 25, a negative pressure is formed in the drive housing 21. The cooling liquid in the storage tank 24 is drawn into the liquid extraction joint 25 through the pipeline and enters the drive housing 21. As the reciprocating screw 22 continues to rotate, it drives the sealing plate 23 to move in the opposite direction and reset. At this time, the sealing plate 23 squeezes the liquid in the drive housing 21. Under the action of pressure, the liquid is discharged through the drain joint 26 and transported to the liquid supply channel of the tool holder 2 through the pipeline. Then it enters the main channel 7 and the secondary channel 8 of the tool holder 5 to realize the cooling cycle. After absorbing heat in the tool holder 5 and the tool holder 2, the cooling liquid returns to the storage tank 24 through the return channel to form a closed loop.

[0069] Liquid is supplied into the supply channel and the main channel 7 within the tool holder 5. After cooling the tool holder 5 and tool post 2, the liquid is discharged through the return channel, forming a liquid circulation. This provides comprehensive cooling and temperature protection for all tool holders 5 and tool post 2, effectively reducing the turret temperature and preventing accuracy degradation and component damage due to overheating, thus ensuring the normal operation of the turret. Simultaneously, in addition to entering the main channel 7 through the supply channel, the liquid also enters the secondary channel 8 within the tool holder 5 where the old tool is inserted, achieving a dual cooling effect. This further improves the cooling efficiency of the used tool, allowing for a faster reduction in its temperature, ensuring effective cooling, extending tool life, and reducing tool wear costs.

[0070] Meanwhile, the sealing plate 23 reciprocates linearly within the drive housing 21. The sealing plate 23 moves toward the drain connector 26, increasing the volume of the air storage chamber. It draws in outside air through the one-way air inlet valve 32. The sealing plate 23 moves in the opposite direction, compressing the air in the air storage chamber. The gas enters the air storage tank 33 through the one-way exhaust connector 31 and pipeline. The compressed air in the air storage tank 33 enters the air supply channel of the tool holder 2 through the rotary connector 27. It passes through the air outlet 36 of the mounting slot 4, the air inlet 37 of the tool holder 5, and the vent 35, and is finally ejected at high speed from the air nozzle 40. The high-speed airflow carries away the heat of the old tool head, helping to reduce the temperature of the tool body and avoid high-temperature damage to the tool holder 5 and tool turret components. At the same time, the airflow blows away the residual chips and coolant impurities on the tool head, keeping the mounting hole 6 of the tool holder 5 clean and improving the subsequent tool mounting accuracy.

[0071] After the old knife is cooled and cleaned, the gas in the pneumatic telescopic rod 9 is discharged through the damping exhaust hole 11. Under the elastic force of the first damping spring 14 and the second damping spring 41, the moving plate 10 drives the second slide rod 39 to move in the opposite direction, re-seal the vent hole 35, cut off the connection between the air supply channel and the air nozzle 40, and stop blowing air.

[0072] When the sealing plate 23 reciprocates, it continuously compresses gas into the gas storage tank 33. Even if the air nozzle 40 of the current tool holder 5 is closed, the gas storage tank 33 can still store gas at a certain pressure. When the next set of old tools is inserted, the pre-stored gas in the gas storage tank 33 can be quickly sprayed out, realizing immediate insertion and blowing, improving cooling and cleaning efficiency, reducing waiting time, and forming a double protection by combining air blowing cooling and liquid cooling, thus extending the service life of the tool and the tool turret.

[0073] When the hot, used blade is inserted into the mounting hole 6 of the blade holder 5, the blade end directly contacts the fixed end of the pneumatic telescopic rod 9. The high temperature of the used blade is rapidly conducted through the heat-conducting plate 34 to the pneumatic telescopic rod 9 and the thermal expansion strip 43 inside the damping exhaust hole 11. This causes the thermal expansion strip 43 to expand due to the thermal effect. The expanded thermal expansion strip 43 is pressed towards the pores of the damping exhaust hole 11, resulting in a reduction in the effective flow cross-sectional area of ​​the damping exhaust hole 11. When not heated, the pores of the damping exhaust hole 11 allow gas to escape at a normal speed; when the thermal expansion strip 43 expands, the pores are partially blocked. Increased gas discharge resistance and reduced flow rate obstruct gas discharge from the pneumatic telescopic rod 9 cause the moving plate 10 to maintain the secondary channel 8 open for an extended period, thus continuously connecting the liquid supply channel to the coolant. This allows the coolant to flow through the old knife installation area for a longer time, enhancing the directional cooling effect and accelerating the cooling of the old knife. Simultaneously, the extended displacement time of the moving plate 10 also drives the second slide rod 39 to maintain the vent 35 open, allowing the air nozzle 40 to continuously spray compressed air. The extended blowing time can more thoroughly clean the chips and impurities from the old knife tip, while also aiding in heat dissipation.

[0074] After the tool holder 2 rotates to a certain position under the drive of the drive motor 3, it takes out the turning tool to be used in another set of tool holders 5 and installs it on the machining table of the machine tool. Then, the machine tool is started to carry out machining operations. The efficient cooling design ensures the stable operation of the tool turret and improves production efficiency.

[0075] 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 protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC machine tool servo power turret with a protective structure, characterized in that, The device includes a main body (1), a tool holder (2) on one side of the main body (1), a drive motor (3) on the other side of the main body (1), a number of mounting slots (4) are distributed around the outer circumference of the tool holder (2), a tool holder (5) is detachably connected in the mounting slot (4), a mounting hole (6) for mounting a cutting tool is provided on one side of the tool holder (5), a liquid supply channel and a liquid return channel are provided in the tool holder (2), a main channel (7) and a secondary channel (8) are provided in the tool holder (5) connecting the liquid supply channel and the liquid return channel, a squeezing adjustment component is provided in the mounting hole (6) to connect the secondary channel (8) after the cutting tool is installed, and a liquid supply component connected to the main liquid supply channel and the liquid return channel is provided on the top of the main body (1). The extrusion adjustment assembly includes a pneumatic telescopic rod (9) horizontally disposed in the mounting hole (6). The output end of the pneumatic telescopic rod (9) passes through the mounting hole (6) and is fixedly connected to a moving plate (10). The fixed end of the pneumatic telescopic rod (9) is provided with a damping exhaust hole (11). One side of the cutter holder (5) is provided with a first sliding hole (12) communicating with the secondary channel (8). A first sliding rod (13) for disconnecting the secondary channel (8) is sealed and slidably connected in the first sliding hole (12). One end of the first sliding rod (13) is fixedly connected to one side of the moving plate (10). A first damping spring (14) is fixedly connected between the side of the moving plate (10) near the first sliding rod (13) and the cutter holder (5).

2. The CNC machine tool servo power turret with a protective structure according to claim 1, characterized in that, The tool holder (5) is provided with a first liquid inlet (15) and a first liquid outlet (16) corresponding to the main channel (7), and a second liquid inlet (17) and a second liquid outlet (18) corresponding to the auxiliary channel (8) on the side near the tool holder (2); the mounting groove (4) is provided with a first through hole (19) corresponding to the first liquid inlet (15) and the second liquid inlet (17) and communicating with the liquid supply channel, and a second through hole (20) corresponding to the first liquid outlet (16) and the second liquid outlet (18) and communicating with the liquid return channel.

3. A CNC machine tool servo power turret with a protective structure according to claim 2, characterized in that, The liquid supply assembly includes a drive housing (21) disposed above the main body (1). A horizontally arranged reciprocating screw (22) is provided inside the drive housing (21). A vertically arranged sealing plate (23) is connected to the reciprocating screw (22) by a sealing thread. The sealing plate (23) is slidably connected to the inner wall of the drive housing (21). One end of the reciprocating screw (22) passes through the drive housing (21) and is driven by the drive motor (3). The reciprocating screw (22) is rotatably connected to the drive housing (21). A liquid storage tank (24) is provided on one side of the drive housing (21). A liquid extraction connector (25) and a liquid discharge connector (26) are connected to one side of the drive housing (21). The liquid extraction connector (25) is connected to the inside of the liquid storage tank (24) through a pipeline.

4. A CNC machine tool servo power turret with a protective structure according to claim 3, characterized in that, The output shaft of the drive motor (3) is fixedly connected to one side of the tool holder (2) through a rotary joint (27). One end of the liquid supply channel is connected to the drain connector (26) through the rotary joint (27), and the other end of the return channel is connected to the storage tank (24) through the rotary joint (27).

5. A CNC machine tool servo power turret with a protective structure according to claim 4, characterized in that, The first pulley (28) is mounted on the output shaft of the drive motor (3), and a second pulley (29) is fixedly connected to one end of the reciprocating screw (22). The first pulley (28) and the second pulley (29) are driven by a transmission belt (30).

6. A CNC machine tool servo power turret with a protective structure according to claim 5, characterized in that, The sealing plate (23) forms an air storage chamber between the side away from the drain connector (26) and the inside of the drive housing (21). The end of the drive housing (21) away from the drain connector (26) is connected to a one-way exhaust connector (31) and a one-way air inlet valve (32). An air storage tank (33) is provided on one side of the drive housing (21). The one-way exhaust connector (31) is connected to the inside of the air storage tank (33) through a pipeline. The tool holder (2) is provided with an air supply channel. One end of the air supply channel is connected to the air storage tank (33) through a rotary joint (27). The tool holder (5) is provided with a vent hole (35). Each of the mounting slots (4) is provided with an air outlet hole (36) connected to the air supply channel. The side of the tool holder (5) near the mounting slot (4) is provided with an air inlet hole (37) corresponding to the air outlet hole (36). The air inlet hole (37) is connected to the vent hole (35). One side of the tool holder (5) is provided with a vent hole. (35) A second sliding hole (38) is connected, and a second sliding rod (39) for disconnecting the vent hole (35) is slidably connected in the second sliding hole (38). One end of the second sliding rod (39) is fixedly connected to the moving plate (10). The side of the knife holder (5) away from the moving plate (10) is provided with several sets of air nozzles (40) connected to the vent hole (35). A second damping spring (41) is fixedly connected between the side of the moving plate (10) near the second sliding rod (39) and the knife holder (5).

7. A CNC machine tool servo power turret with a protective structure according to claim 6, characterized in that, The damping vent (11) is provided with an assembly groove (42), and the assembly groove (42) is provided with a thermal expansion strip (43).

8. A CNC machine tool servo power turret with a protective structure according to claim 7, characterized in that, A heat-conducting plate (34) is fixedly connected to the fixed end of the pneumatic telescopic rod (9).

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