Mineral filling type double-spindle turning and milling composite machine tool

Abstract

The invention discloses a mineral filling type double-spindle turning and milling composite machine tool, and belongs to the technical field of composite machine tools, the mineral filling type double-spindle turning and milling composite machine tool comprises a base and further comprises a double-spindle mechanism, the double-spindle mechanism comprises a first spindle box fixedly connected above the base, a first spindle is rotatably connected in the first spindle box, and a first chuck is fixedly mounted at one end of the first spindle; a second spindle box is slidably arranged above the end, away from the first spindle box, of the base, a second spindle is rotatably connected into the second spindle box, a second chuck is fixedly mounted at the end, close to the first spindle, of the second spindle, and the first spindle and the second spindle are coaxial. According to the turning and milling composite machine tool spindle cooling device, the problems that an existing turning and milling composite machine tool spindle is poor in cooling effect, a tool and a workpiece cannot be efficiently cooled, and then the service life of machine tool parts and the service life of the tool and the machining quality of the workpiece are affected are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of compound machine tools, and in particular relates to a mineral-filled dual-spindle turning-milling compound machine tool. Background Art

[0002] Compound machine tools, also known as multifunctional compound processing machine tools or compound processing machine tools, refer to machine tools that can complete or complete as much as possible the processing of multiple elements from blanks to finished products on a single host machine. The working principle of compound machine tools is to use different cutting tools of multiple processes to complete a variety of different processing tasks on the same processing table. The workpiece is relatively stable, while each tool rotates or moves. The processing process is completed by a certain program control, which can realize the function of one clamping and multiple processing. Compound machine tools need to be used in conjunction with CNC systems. Through CNC programming, automatic continuous processing can be realized, which greatly improves production efficiency and processing accuracy, and meets the requirements of high quality, high precision and high efficiency processing.

[0003] Turning and milling compound machine tools are a type of compound machine tools. They mainly combine turning and milling processing methods, and can realize turning and milling of workpieces respectively, so as to meet the processing needs of workpieces. At present, turning and milling compound machine tools still generally have the following problems: 1. The spindle cooling effect of the existing turning-milling compound machine tool is poor and cannot meet the cooling demand of the machine tool spindle at the current high speed, which will cause the temperature of the machine tool spindle and its outer bearing to be too high, affecting the service life of the machine tool parts and the processing quality of the workpiece.

[0004] 2. The coolant spraying effect of the existing turning-milling compound machine tools is poor, and it cannot meet the requirements of all-round spraying of workpieces and tools, which will cause the temperature of the tools and workpieces to be too high, causing abnormal wear of the tools, affecting the service life of the tools and the processing quality of the workpieces. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a mineral-filled dual-spindle turning-milling compound machine tool, which has the advantages of good spindle cooling effect and can better cool the tool and the workpiece. It solves the problem that the existing turning-milling compound machine tools have poor spindle cooling effect and cannot efficiently cool the tool and the workpiece, thereby affecting the service life of machine tool parts and tools and the workpiece processing quality.

[0006] The present invention is achieved in this way. A mineral-filled dual-spindle turning and milling compound machine tool includes a base and a dual-spindle mechanism, wherein the dual-spindle mechanism includes a first spindle box fixedly connected to the top of the base, a first spindle rotatably connected in the first spindle box, a first chuck is fixedly installed at one end of the first spindle, a second spindle box is slidably arranged above an end of the base away from the first spindle box, a second spindle is rotatably connected in the second spindle box, a second chuck is fixedly installed at one end of the second spindle close to the first spindle, and the first spindle and the second spindle are coaxial, a processing mechanism, the processing mechanism is arranged between the first spindle box and the second spindle box, and is used to drive a milling cutter and a turning tool to perform compound processing on a workpiece, and a first cooling mechanism, the first cooling mechanism is arranged in the first spindle box, and is used to cool the spindle of the compound machine tool and spray coolant on the workpiece and the tool.

[0007] As a preferred embodiment of the present invention, the processing mechanism includes a feed assembly arranged between the first spindle box and the second spindle box, the feed assembly is provided with a first drive assembly, a turret for clamping a tool is provided on one side of the first drive assembly, the first drive assembly can drive the turret to replace the tool, and the feed assembly can drive the turret and the first drive assembly to move and process between the first spindle box and the second spindle box.

[0008] As a preferred embodiment of the present invention, a slide rail is fixedly connected above the base, the second spindle box is slidably connected above the slide rail, and a second drive assembly for driving the second spindle box to slide back and forth in a direction approaching and away from the first spindle box is provided at one end of the base away from the first spindle box.

[0009] As a preferred embodiment of the present invention, the first cooling mechanism includes a mounting groove opened on the side of the first spindle box close to the second spindle box, a cooling sleeve is fixedly connected in the mounting groove, the cooling sleeve is sleeved on the outside of the first spindle, a mounting hole is opened at the end of the mounting groove away from the first chuck, a bearing support plate is fixedly connected to the side of the cooling sleeve away from the first chuck, a first space is provided between the bearing support plate and the inside of the mounting hole, a support plate for supporting and closing the first space is installed on the side of the first spindle box away from the first chuck, and an outer cooling component for cooling the spindle from the outside is provided in the first space.

[0010] As a preferred embodiment of the present invention, the first cooling mechanism also includes a plurality of first bearings whose inner rings are fixedly installed on the outer side of the first main shaft, the outer rings of the first bearings are fixedly installed on the inner rings of the bearing support plate, second bearings are arranged on both sides of the cooling sleeve, the outer rings of the second bearings are installed in cooperation with the cooling sleeve, the inner rings of the second bearings are fixedly installed on the outer side of the first main shaft, an annular groove is provided in the cooling sleeve, the outer cooling assembly is communicated with the inside of the annular groove, a sealing ring is provided at the joint between the cooling sleeve and the first main shaft, and an inner cooling assembly is provided inside the first main shaft, which is communicated with the inside of the annular groove and is used to cool the main shaft from the inside.

[0011] As a preferred embodiment of the present invention, the outer cooling assembly includes a cooling pipe spirally wound around the outer side of the bearing support plate, and the cooling pipe is located in the first space, one end of the cooling pipe is connected to the interior of the annular groove, and the other end of the cooling pipe passes through the first spindle box and extends to the bottom of the first spindle box, and is connected to a first solenoid valve located below the first spindle box, a first water pump is fixedly connected below the first spindle box, and an end of the first solenoid valve away from the cooling pipe is connected to the first water pump.

[0012] As a preferred embodiment of the present invention, the inner cooling assembly includes a second space opened inside the first spindle, a cooling hole connecting the second space and the interior of the annular groove is opened in the outer wall of the first spindle, a baffle plate is symmetrically fixedly connected to the interior of the annular groove, the baffle plate divides the annular groove into an upper part and a lower part, the cooling pipe is connected to the interior of the upper part, a second solenoid valve is arranged below the first spindle box, one end of the second solenoid valve is connected to the interior of the lower part, and the other end thereof is connected to a second water pump fixedly connected to the bottom of the first spindle box, and a sealing block is arranged at the contact surface between the baffle plate and the first spindle.

[0013] As a preferred embodiment of the present invention, the first cooling mechanism also includes a plurality of mounting plates fixedly connected to the cooling sleeve on the side close to the first chuck, the mounting plate on the side away from the cooling sleeve is fixedly connected to a sealed telescopic rod, a tension spring is arranged inside the sealed telescopic rod, the two ends of the tension spring are respectively fixedly connected to the mounting plate and the inner end surface of the sealed telescopic rod, a third solenoid valve is arranged below the mounting plate, the two ends of the third solenoid valve are respectively connected to the interior of the annular groove and the interior of the sealed telescopic rod, a fourth solenoid valve is fixedly connected to one end of the sealed telescopic rod away from the mounting plate, one end of the fourth solenoid valve is connected to the interior of the sealed telescopic rod, a nozzle is fixedly installed on the other end of the fourth solenoid valve, and an elastic sleeve is sleeved on the outside of the sealed telescopic rod.

[0014] As a preferred embodiment of the present invention, the interior of the base is a hollow structure, and the interior is filled with a mineral casting filler.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a first cooling mechanism to cool the first spindle, thereby achieving cooling of the spindle, preventing the spindle temperature from being too high and affecting the service life of machine tool parts, thereby effectively improving the processing effect of the machine tool. At the same time, it can also spray the workpiece surface in all directions when it is necessary to spray coolant, thereby better cooling the workpiece and the tool, thereby extending the service life of the tool and ensuring the processing quality of the workpiece.

[0016] 2. The present invention uses an outer cooling component and an inner cooling component to achieve all-round cooling of the spindle, thereby effectively improving the cooling effect of the spindle and ensuring efficient use of the machine tool. At the same time, it automatically realizes the self-circulation of the coolant, which can effectively save the workpiece processing cost.

[0017] 3. The present invention fills the inner cavity of gray cast iron with mineral casting fillers based on the mainstream use of gray cast iron in metal cutting machine tools. Since the shock absorption of mineral casting fillers is 10 times that of gray cast iron, the shock absorption and anti-seismic performance are greatly improved on the basis of the performance of conventional machine tools, thereby effectively improving the surface processing accuracy and processing quality of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram provided by an embodiment of the present invention; Figure 2 The embodiment of the present invention provides Figure 1 A partial enlarged view of the middle A; Figure 3 is another perspective structure schematic diagram provided by an embodiment of the present invention; Figure 4 is a structural schematic diagram of a first spindle box provided by an embodiment of the present invention; Figure 5 is a rear full sectional view of a first spindle box provided by an embodiment of the present invention; Figure 6 The embodiment of the present invention provides Figure 5 A partial enlarged view of point B in the middle; Figure 7 is a top view of a first spindle box provided by an embodiment of the present invention; Figure 8 is a schematic diagram of the internal structure of a first spindle box provided by an embodiment of the present invention; Fig. 9 is a schematic diagram of the internal structure of the elastic sleeve provided by an embodiment of the present invention; Fig.10 The embodiment of the present invention provides Fig. 9 A partial enlarged view of point C in the middle; Fig.11is a schematic diagram of an internal cross-section of a cooling jacket provided by an embodiment of the present invention; Fig.12 It is a schematic diagram of the internal structure of a base provided by an embodiment of the present invention.

[0019] In the figure: 1. base; 2. first spindle box; 3. first spindle; 4. first chuck; 5. second spindle box; 6. second spindle; 7. second chuck; 8. feed assembly; 9. first drive assembly; 10. turret; 11. slide rail; 12. second drive assembly; 13. cooling jacket; 14. bearing support plate; 15. support plate; 16. first bearing; 17. second bearing; 18. sealing ring; 19. cooling pipe; 20. first solenoid valve; 21. first water pump; 22. baffle plate; 23. second solenoid valve; 24. second water pump; 25. sealing block; 26. mounting plate; 27. sealing telescopic rod; 28. tension spring; 29. ​​third solenoid valve; 30. fourth solenoid valve; 31. nozzle; 32. elastic sleeve; 33. mineral casting filler. DETAILED DESCRIPTION

[0020] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0021] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0022] refer to Figures 1 to 12 A mineral-filled dual-spindle turning-milling compound machine tool provided by an embodiment of the present invention comprises a base 1 and a dual-spindle mechanism, wherein the dual-spindle mechanism comprises a first spindle box 2 fixedly connected to the top of the base 1, a first spindle 3 is rotatably connected in the first spindle box 2, a first chuck 4 is fixedly installed at one end of the first spindle 3, a second spindle box 5 is slidably arranged above the end of the base 1 away from the first spindle box 2, a second spindle 6 is rotatably connected in the second spindle box 5, a second chuck 7 is fixedly installed at one end of the second spindle 6 close to the first spindle 3, and the first spindle 3 and the second spindle 6 are coaxial, a processing mechanism, the processing mechanism is arranged between the first spindle box 2 and the second spindle box 5, and is used to drive a milling cutter and a turning tool to perform compound processing on a workpiece, and a first cooling mechanism, the first cooling mechanism is arranged in the first spindle box 2, and is used to cool the spindle of the compound machine tool and spray coolant on the workpiece and the tool.

[0023] When the workpiece needs to be processed, the tool is clamped on the processing mechanism, and then the workpiece is clamped by the first chuck 4 or the second chuck 7, or the first chuck 4 and the second chuck 7 are used to clamp the workpiece. Therefore, through the dual-spindle design, the machine tool can realize more types of processing requirements. At the same time, the sliding characteristics of the second spindle box 5 are used to enable the workpiece to move on its own, so as to cooperate with the machine tool to perform more complex processing on the workpiece, thereby effectively improving the processing accuracy of the workpiece and ensuring that the workpiece has a better processing effect.

[0024] After the workpiece is clamped, the machining mechanism will drive the tool to slide along the X-axis, Y-axis and Z-axis of the machine tool, thereby pushing the tool clamped on the machining mechanism to feed based on the above three axes according to the programming requirements, thereby realizing compound machining of the workpiece.

[0025] While the machine tool is processing, the first cooling mechanism will cool the first spindle 3, thereby achieving cooling of the spindle, preventing the spindle temperature from being too high and affecting the service life of machine tool parts, thereby effectively improving the processing effect of the machine tool, and at the same time, it can also spray the workpiece surface in all directions when it is necessary to spray coolant, so as to better cool the workpiece and the tool, thereby extending the service life of the tool and ensuring the processing quality of the workpiece.

[0026] It should be noted that the first spindle 3 and the second spindle 6 are both driven to rotate by an external motor, which and the chuck are both existing technologies, so they will not be described in detail here.

[0027] Furthermore, the processing mechanism includes a feed assembly 8 arranged between the first spindle box 2 and the second spindle box 5, and a first drive assembly 9 is arranged on the feed assembly 8. A turret 10 for clamping a tool is arranged on one side of the first drive assembly 9. The first drive assembly 9 can drive the turret 10 to replace the tool, and the feed assembly 8 can drive the turret 10 and the first drive assembly 9 to move and process between the first spindle box 2 and the second spindle box 5.

[0028] When the workpiece needs to be processed, the tool is clamped on the turret 10, and then the feed assembly 8 is started, which will drive the first drive assembly 9 and the turret 10 above it to slide along the X-axis, Y-axis and Z-axis directions of the machine tool, thereby controlling the position of the tool clamped by the turret 10, and then realizing the processing of the workpiece. When the tool needs to be replaced, the first drive assembly 9 is started, which will drive the turret 10 to rotate, thereby replacing the tool, thereby effectively improving the feeding and processing effect of the equipment.

[0029] It should be noted that the feed assembly 8 drives the tool to feed through the motor and the screw drive turret 10, and the first drive assembly 9 drives the turret 10 through the motor to perform tool changing operations. It and the turret 10 are both existing technologies, so they will not be described in detail here.

[0030] Furthermore, a slide rail 11 is fixedly connected above the base 1, and the second spindle box 5 is slidably connected above the slide rail 11. The end of the base 1 away from the first spindle box 2 is provided with a second driving assembly 12 for driving the second spindle box 5 to slide back and forth in a direction close to and away from the first spindle box 2.

[0031] When it is necessary to control the second spindle box 5 to drive the second spindle 6 to move, start the second drive assembly 12, which will drive the second spindle box 5 to slide along the direction of the slide rail 11 through the screw rod and the slider, so that when the first chuck 4 clamps the workpiece, the workpiece is tightened from the other side, and when the second chuck 7 clamps the workpiece, it cooperates with the turret 10 to perform auxiliary movement, thereby effectively improving the processing effect of the workpiece.

[0032] Furthermore, the first cooling mechanism includes a mounting groove opened on the side of the first spindle box 2 close to the second spindle box 5, a cooling sleeve 13 is fixedly connected in the mounting groove, the cooling sleeve 13 is sleeved on the outside of the first spindle 3, a mounting hole is opened at the end of the mounting groove away from the first chuck 4, a bearing support plate 14 is fixedly connected to the side of the cooling sleeve 13 away from the first chuck 4, a first space is provided between the bearing support plate 14 and the inside of the mounting hole, a support plate 15 for supporting and closing the first space is installed on the side of the first spindle box 2 away from the first chuck 4, an outside cooling component for cooling the spindle from the outside is provided in the first space, The first cooling mechanism also includes a plurality of first bearings 16 whose inner rings are fixedly mounted on the outer side of the first main shaft 3, the outer rings of the first bearings 16 are fixedly mounted on the inner rings of the bearing support plate 14, second bearings 17 are arranged on both sides of the cooling sleeve 13, the outer rings of the second bearings 17 are mounted in cooperation with the cooling sleeve 13, the inner rings of the second bearings 17 are fixedly mounted on the outer side of the first main shaft 3, an annular groove is provided in the cooling sleeve 13, the outer cooling assembly is communicated with the inside of the annular groove, a sealing ring 18 is provided at the joint between the cooling sleeve 13 and the first main shaft 3, and an inner cooling assembly is provided inside the first main shaft 3 which is communicated with the inside of the annular groove and is used to cool the main shaft from the inside.

[0033] When the first spindle 3 needs to be cooled during processing of the workpiece, an external coolant tank is first required, and then the external cooling component is started, which absorbs coolant from the external coolant tank and delivers the absorbed coolant to the first space. The coolant entering the first space passes through the outside of the first spindle 3 and the first bearing 16 and flows into the annular groove. Since a sealing ring 18 is provided between the cooling sleeve 13 and the first spindle 3, the annular groove is in a sealed state. During the flow of the coolant in the first space, the first spindle 3 and the first bearing 16 are cooled from the outside and flow into the annular groove. The coolant will be transported to the inner cooling component, which can transport the coolant to the inside of the first spindle 3, thereby further cooling the first spindle 3 and the first bearing 16 from the inside, and the coolant flowing out of the first spindle 3 will flow back into the annular groove again, and driven by the inner cooling component, it will be discharged into the external coolant tank for recycling. Through this setting, the outer cooling component and the inner cooling component can be used to achieve all-round cooling of the spindle, thereby effectively improving the cooling effect of the spindle, ensuring the efficient use of the machine tool, and automatically realizing the self-circulation of the coolant, which can effectively save the workpiece processing cost.

[0034] At the same time, by providing the first bearing 16 and the second bearing 17, the rotation effect of the first main shaft 3 can be effectively improved, and by providing the support plate 15, the rigidity of the bearing support plate 14 can be effectively improved, thereby effectively preventing the equipment from being damaged.

[0035] Furthermore, the outer cooling assembly includes a cooling pipe 19 spirally wound around the outer side of the bearing support plate 14, and the cooling pipe 19 is located in the first space, one end of the cooling pipe 19 is communicated with the inside of the annular groove, and the other end of the cooling pipe 19 passes through the first spindle box 2 and extends to the bottom of the first spindle box 2, and is communicated with a first solenoid valve 20 located below the first spindle box 2, a first water pump 21 is fixedly connected to the bottom of the first spindle box 2, and one end of the first solenoid valve 20 away from the cooling pipe 19 is communicated with the first water pump 21, and the inner cooling assembly includes a cooling pipe 19 opened in the first spindle box 2. The second space inside the shaft 3, a cooling hole connecting the second space and the inside of the annular groove is opened in the outer wall of the first main shaft 3, a baffle plate 22 is symmetrically fixedly connected to the inside of the annular groove, the baffle plate 22 divides the annular groove into an upper part and a lower part, the cooling pipe 19 is connected to the inside of the upper part, a second solenoid valve 23 is arranged below the first main shaft box 2, one end of the second solenoid valve 23 is connected to the inside of the lower part, and the other end thereof is connected to a second water pump 24 fixedly connected to the bottom of the first main shaft box 2, and a sealing block 25 is arranged at the contact surface between the baffle plate 22 and the first main shaft 3.

[0036] When the spindle needs to be cooled, firstly, the first water pump 21 is connected to the external coolant tank through a pipeline, and then the first solenoid valve 20 and the second solenoid valve 23 as well as the first water pump 21 and the second water pump 24 are opened. At this time, the first water pump 21 injects coolant into the cooling pipe 19, and the second water pump 24 draws coolant from the lower part of the annular groove. If the coolant inside the machine tool is full, the input and output of the first water pump 21 and the second water pump 24 can be made the same, thereby realizing the circulation of the coolant. If the coolant inside the machine tool is not full , it is necessary to make the input of the first water pump 21 greater than the discharge of the second water pump 24, so that the coolant in the machine tool is full, and then make the input and output of the first water pump 21 and the second water pump 24 the same and enter a circulation state, and the coolant injected into the cooling pipe 19 will flow into the upper part of the annular groove, and enter the second space through the cooling hole opened on the first spindle 3, and then enter the lower part of the annular groove through the cooling hole, and finally be discharged back to the external coolant tank through the second solenoid valve 23 and the second water pump 24.

[0037] It should be noted that the upper and lower parts of the annular groove are isolated from each other. When the first spindle 3 rotates, the cooling hole opened above it serves as a channel for the coolant to enter the second space when it rotates to the upper part, and serves as a channel for the coolant to be discharged from the second space when it rotates to the lower part.

[0038] During the coolant circulation process, the coolant located in the cooling pipe 19, the second space, the cooling hole and the annular groove will cool down the first spindle 3 and the first bearing 16 and the second bearing 17 from different directions, thereby effectively improving the cooling effect of the spindle and ensuring efficient processing of the machine tool.

[0039] Furthermore, the first cooling mechanism also includes a plurality of mounting plates 26 fixedly connected to the side of the cooling sleeve 13 close to the first chuck 4, the mounting plate 26 is fixedly connected to a sealing telescopic rod 27 on the side away from the cooling sleeve 13, a tension spring 28 is arranged inside the sealing telescopic rod 27, the two ends of the tension spring 28 are respectively fixedly connected to the mounting plate 26 and the inner end surface of the sealing telescopic rod 27, a third solenoid valve 29 is arranged below the mounting plate 26, the two ends of the third solenoid valve 29 are respectively connected to the inside of the annular groove and the inside of the sealing telescopic rod 27, a fourth solenoid valve 30 is fixedly connected to one end of the sealing telescopic rod 27 away from the mounting plate 26, one end of the fourth solenoid valve 30 is connected to the inside of the sealing telescopic rod 27, a nozzle 31 is fixedly installed on the other end of the fourth solenoid valve 30, and an elastic sleeve 32 is sleeved on the outside of the sealing telescopic rod 27.

[0040] When it is necessary to spray coolant on the workpiece and the tool, the second solenoid valve 23 and the second water pump 24 can be closed first, and the third solenoid valve 29 can be opened at the same time. At this time, the coolant injected by the first water pump 21 will be injected into the sealed telescopic rod 27 through the third solenoid valve 29. As the coolant in the sealed telescopic rod 27 increases, the coolant will push the sealed telescopic rod 27 to extend, thereby extending the nozzle 31 forward. By controlling the input amount of the first water pump 21, the extension distance of the nozzle 31 can be controlled. When the extension distance needs to be shortened, the first solenoid valve 20 and the first water pump 21 need to be closed, and then the second solenoid valve 23 and the second water pump 24 are opened. The coolant in the sealed telescopic rod 27 will shrink under the pull of the tension spring 28. When the position is determined, closing the third solenoid valve 29 can keep the nozzle 31 in the current position unchanged, and then the spraying position of the nozzle 31 can be adjusted. When spraying is required, the second solenoid valve 23 and the second water pump 24 are in the closed state, and the third solenoid valve 29 and the fourth solenoid valve 30 are opened at the same time, and the coolant can be sprayed out. During this process, the first water pump 21 needs to quickly input the coolant that can maintain the nozzle 31 in the current position according to the current position of the nozzle 31, so as to ensure that the nozzle 31 stably sprays the workpiece and the tool, improve the coolant spraying effect of the machine tool, and then effectively cool the workpiece and the tool to ensure that they have good working performance and processing quality.

[0041] Furthermore, the interior of the base 1 is a hollow structure, which is filled with a mineral casting filler 33 .

[0042] Based on the mainstream use of gray cast iron in metal cutting machine tools, mineral casting filler 33 is filled in the inner cavity of the gray cast iron. Since the shock absorption of the mineral casting filler 33 is 10 times that of gray cast iron, the shock absorption and seismic resistance performance is greatly improved on the basis of the performance of conventional machine tools, thereby effectively improving the surface processing accuracy and processing quality of parts.

[0043] Furthermore, on the basis of setting a first cooling mechanism in the first spindle box 2, a second cooling mechanism with the same structure and principle as the first cooling mechanism can be set in the second spindle box 5 by the same method, so as to realize cooling of the second spindle 6, and when in use, the nozzle 31 of the first cooling mechanism and the nozzle 31 of the second cooling mechanism can be used to spray the workpiece clamped by the first chuck 4 or the workpiece clamped by the second chuck 7 and the workpiece clamped by the first chuck 4 and the second chuck 7 at the same time, so as to further improve the cooling effect of the workpiece and the tool and ensure high-quality processing of the workpiece.

[0044] Working principle of the present invention: When processing a workpiece, the tool must first be installed on the processing mechanism, and then the workpiece is fixed by using the first chuck 4 or the second chuck 7 alone or simultaneously, and the dual-spindle design is used to meet more diverse processing needs. At the same time, with the help of the sliding function of the second spindle box 5, the workpiece can move autonomously and cooperate with the machine tool to complete more sophisticated processing, thereby significantly improving the processing accuracy and ensuring that the workpiece has a good processing effect.

[0045] After the workpiece is clamped, the machining mechanism drives the tool to move along the X-axis, Y-axis and Z-axis of the machine tool. According to the programming instructions, the tool is fed based on these three axes to perform compound machining on the workpiece.

[0046] During the machining process of the machine tool, the first cooling mechanism will cool the first spindle 3 to reduce the spindle temperature and prevent the service life of the machine tool parts from being shortened due to over-high temperature, thereby improving the machining effect of the machine tool. In addition, when it is necessary to spray coolant, the mechanism can also spray the workpiece surface in all directions to more effectively cool the workpiece and the tool, extend the tool life, and ensure the machining quality of the workpiece.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mineral-filled dual-spindle turning-milling machine tool, comprising a base (1), characterized in that: The machine also comprises a dual-spindle mechanism, the dual-spindle mechanism comprising a first spindle box (2) fixedly connected to the top of the base (1), a first spindle (3) rotatably connected in the first spindle box (2), a first chuck (4) fixedly mounted on one end of the first spindle (3), a second spindle box (5) slidably arranged above an end of the base (1) away from the first spindle box (2), a second spindle (6) rotatably connected in the second spindle box (5), a second chuck (7) fixedly mounted on one end of the second spindle (6) close to the first spindle (3), and the first spindle (3) and the second spindle (6) are coaxial; a machining mechanism, the machining mechanism being arranged between the first spindle box (2) and the second spindle box (5) and being used for driving a milling cutter and a turning tool to perform composite machining on a workpiece; A first cooling mechanism is arranged in the first spindle box (2) and is used for cooling the spindle of the compound machine tool and spraying cooling liquid onto the workpiece and the tool.

2. A mineral-filled dual-spindle turning-milling compound machine tool as claimed in claim 1, characterized in that: The processing mechanism comprises a feed assembly (8) arranged between the first spindle box (2) and the second spindle box (5); a first drive assembly (9) is arranged on the feed assembly (8); a turret (10) for clamping a tool is arranged on one side of the first drive assembly (9); the first drive assembly (9) can drive the turret (10) to replace the tool; the feed assembly (8) can drive the turret (10) and the first drive assembly (9) to move and process between the first spindle box (2) and the second spindle box (5).

3. A mineral-filled dual-spindle turning-milling compound machine tool as claimed in claim 1, characterized in that: A slide rail (11) is fixedly connected to the top of the base (1), and the second spindle box (5) is slidably connected to the top of the slide rail (11). A second drive assembly (12) for driving the second spindle box (5) to slide back and forth in a direction approaching and away from the first spindle box (2) is provided at one end of the base (1) away from the first spindle box (2).

4. A mineral-filled dual-spindle turning-milling compound machine tool as claimed in claim 1, characterized in that: The first cooling mechanism comprises a mounting groove formed on a side of the first spindle box (2) close to the second spindle box (5), a cooling sleeve (13) being fixedly connected in the mounting groove, the cooling sleeve (13) being sleeved on the outside of the first spindle (3), a mounting hole being formed at one end of the mounting groove away from the first chuck (4), a bearing support plate (14) being fixedly connected to the side of the cooling sleeve (13) away from the first chuck (4), a first space being provided between the bearing support plate (14) and the inside of the mounting hole, a support plate (15) for supporting and closing the first space being provided on the side of the first spindle box (2) away from the first chuck (4), and an outside cooling component for cooling the spindle from the outside being provided in the first space.

5. A mineral-filled dual-spindle turning-milling compound machine tool as claimed in claim 4, characterized in that: The first cooling mechanism further comprises a plurality of first bearings (16) whose inner rings are fixedly mounted on the outer side of the first main shaft (3); the outer rings of the first bearings (16) are fixedly mounted on the inner rings of the bearing support plates (14); second bearings (17) are arranged on both sides of the cooling sleeve (13); the outer rings of the second bearings (17) are matched and mounted on the cooling sleeve (13); the inner rings of the second bearings (17) are fixedly mounted on the outer side of the first main shaft (3); an annular groove is provided in the cooling sleeve (13); the outer cooling assembly is communicated with the inside of the annular groove; a sealing ring (18) is provided at the sleeve joint between the cooling sleeve (13) and the first main shaft (3); and an inner cooling assembly is arranged inside the first main shaft (3) and is communicated with the inside of the annular groove for cooling the main shaft from the inside.

6. A mineral-filled dual-spindle turning-milling compound machine tool as claimed in claim 5, characterized in that: The outer cooling assembly comprises a cooling pipe (19) spirally wound around the outer side of the bearing support plate (14), and the cooling pipe (19) is located in the first space, one end of the cooling pipe (19) is connected to the inside of the annular groove, the other end of the cooling pipe (19) passes through the first spindle box (2) and extends to the bottom of the first spindle box (2), and is connected to a first solenoid valve (20) located below the first spindle box (2), a first water pump (21) is fixedly connected to the bottom of the first spindle box (2), and one end of the first solenoid valve (20) away from the cooling pipe (19) is connected to the first water pump (21).

7. A mineral-filled dual-spindle turning-milling compound machine tool as claimed in claim 6, characterized in that: The inner cooling assembly comprises a second space opened inside the first spindle (3); a cooling hole connecting the second space and the inside of the annular groove is opened in the outer wall of the first spindle (3); a baffle plate (22) is symmetrically fixedly connected inside the annular groove; the baffle plate (22) divides the annular groove into an upper part and a lower part; the cooling pipe (19) is connected to the inside of the upper part; a second solenoid valve (23) is arranged below the first spindle box (2); one end of the second solenoid valve (23) is connected to the inside of the lower part, and the other end thereof is connected to a second water pump (24) fixedly connected to the bottom of the first spindle box (2); a sealing block (25) is arranged at the contact surface between the baffle plate (22) and the first spindle (3).

8. The mineral-filled dual-spindle turning-milling compound machine tool according to claim 5, characterized in that: The first cooling mechanism further comprises a plurality of mounting plates (26) fixedly connected to a side of the cooling sleeve (13) close to the first chuck (4); a sealing telescopic rod (27) is fixedly connected to a side of the mounting plate (26) away from the cooling sleeve (13); a tension spring (28) is arranged inside the sealing telescopic rod (27); two ends of the tension spring (28) are respectively fixedly connected to the mounting plate (26) and the inner end surface of the sealing telescopic rod (27); a third solenoid valve (29) is arranged below the mounting plate (26); two ends of the third solenoid valve (29) are respectively connected to the inside of the annular groove and the inside of the sealing telescopic rod (27); one end of the sealing telescopic rod (27) away from the mounting plate (26) is fixedly connected to a fourth solenoid valve (30); one end of the fourth solenoid valve (30) is connected to the inside of the sealing telescopic rod (27); a nozzle (31) is fixedly installed on the other end of the fourth solenoid valve (30); and an elastic sleeve (32) is sleeved on the outside of the sealing telescopic rod (27).

9. The mineral-filled dual-spindle turning-milling compound machine tool according to claim 1, characterized in that: The interior of the base (1) is a hollow structure, and is filled with a mineral casting filler (33).

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