Lightweight ram device matched with high-rotating-speed large-torque carbon fiber main shaft

Abstract

The invention relates to the technical field of rams, and provides a light-weight ram device matched with a high-rotating-speed large-torque carbon fiber spindle, which comprises a ram case, a carbon fiber spindle is rotatably arranged at the bottom of the ram case in a penetrating manner, a driving device for driving the carbon fiber spindle to rotate is arranged at the inner top of the ram case, and the light-weight ram device further comprises a heat exchange case, the heat exchange machine box is fixedly connected to the ram machine box in a penetrating mode, a driving main shaft is rotationally connected into the heat exchange machine box, two gas circulation areas are arranged in the heat exchange machine box, an air suction fan is arranged at the tops of the gas circulation areas and is in transmission fit with the driving main shaft, and the two gas circulation areas are both communicated with the interior of the ram machine box. And external air flow enters the ram case through the air circulation area on the upper side. By means of the technical scheme, the problem that in the prior art, in the long-time high-speed running process of the carbon fiber spindle, the temperature of a spindle driving area in the ram device and local temperature of spindle driving equipment rise is solved.

Description

Technical Field

[0001] This invention relates to the field of ram technology, specifically to a lightweight ram device that is matched with a high-speed, high-torque carbon fiber spindle. Background Technology

[0002] The ram is a key component of a machine tool. It is mainly used to mount the machine tool's transmission spindle and cutting tools, and to drive the cutting tools to move vertically to achieve cutting of the workpiece. During the movement, the ram and the crossbeam form a cantilever beam structure, and the elongation is dynamically changing. In short, as a moving structural component of a machine tool, the ram is characterized by its complex structure, large mass, large inertia, and long stroke.

[0003] At the same time, these characteristics bring the following problems to the performance of machine tools: 1. The ram and its functional accessories, which weigh up to tens of tons, move on the crossbeam, consuming a lot of machine tool power and generating a lot of heat, causing thermal deformation of related structural components and reducing the machining accuracy of the machine tool. Therefore, it is urgent to study a lightweight new ram structure. 2. When the ram extends to a certain extent, it will inevitably flex and deform due to the cutting force, severely reducing the stability of the machine tool. Therefore, there is an urgent need to study new ram structures with high rigidity and high strength. 3. During machining, dynamically changing cutting forces and inertia cause chatter, directly deteriorating the dynamic performance of the machine tool. Therefore, there is an urgent need to study new high-damping ram structures; 4. During machine tool processing and long-term operation, thermal and mechanical loads cause deformation errors in the ram, and its structural health affects the service life of the machine tool. Therefore, it is urgent to study new ram structures and methods for real-time monitoring.

[0004] The current solution to the above problems is to use a carbon fiber rotor in the drive structure of the ram device's main shaft. Because the carbon fiber rotor is lightweight, it has less inertia during rotation. Furthermore, due to its lightweight nature, the rotor has a higher critical speed. Reducing the weight of the main shaft makes it easier to brake it, thus achieving the technical characteristics of high speed and high torque, which also meets the lightweight requirements of the ram device. However, because the main shaft rotates at high speed, the drive equipment of the main shaft and the carbon fiber main shaft are prone to local temperature rise in the drive area and drive equipment inside the ram device during high-speed operation, which affects the rigidity of the main shaft. Summary of the Invention

[0005] This invention proposes a lightweight slide device for matching high-speed, high-torque carbon fiber spindles, which solves the problem of local temperature rise in the spindle drive area and spindle drive equipment inside the slide device during long-term high-speed operation of carbon fiber spindles in the prior art.

[0006] The technical solution of the present invention is as follows: A lightweight ram device with a matching high-speed, high-torque carbon fiber spindle, comprising a ram housing, wherein a carbon fiber spindle is rotatably mounted through the bottom of the ram housing, and a drive device for rotating the carbon fiber spindle is provided at the top inner part of the ram housing, and further comprising: A heat exchanger housing is fixedly connected to the slide block housing, and a drive shaft is rotatably connected inside the heat exchanger housing; The heat exchanger housing has two gas flow areas. A suction fan is installed at the top of each gas flow area. The suction fan is driven by the drive spindle. Both gas flow areas are connected to the interior of the slide box, allowing external airflow to enter the slide box through the upper gas flow area, then enter the lower gas flow area for cooling, and finally cool the drive equipment and the carbon fiber spindle. A gas cooling structure is provided between the two gas flow areas. The gas cooling structure is used to cool the gas in the slide box during the process of transporting the gas to the lower gas flow area.

[0007] At least one embodiment of the present invention provides a lightweight slide device for a matching high-speed, high-torque carbon fiber spindle. The heat exchanger box is provided with a through groove, which is connected to the gas flow area located on the upper side. The through groove is provided with a dust-proof plate.

[0008] At least one embodiment of the present invention provides a lightweight slide device for a matching high-speed, high-torque carbon fiber spindle, wherein the suction fan is mounted on the drive spindle and drives the suction fan to operate during the rotation of the drive spindle.

[0009] At least one embodiment of the present invention provides a lightweight slide device for a matching high-speed, high-torque carbon fiber spindle. The gas cooling structure includes a bucket-shaped mounting box, hollow metal tooth blocks, and a transmission assembly. The bucket-shaped mounting box is connected to the gas flow area located on the lower side. Exhaust slots are provided on both sides of the bucket-shaped mounting box. The number of hollow metal tooth blocks is set to multiple, and the multiple hollow metal tooth blocks are connected by an elastic fastening band. During the process of entering the gas flow area located on the lower side from the slide box, the gas is cooled after passing through the hollow metal tooth blocks. The transmission assembly is provided on the bucket-shaped mounting box to drive the multiple hollow metal tooth blocks to move in a cycle.

[0010] At least one embodiment of the present invention provides a lightweight slide device for a matching high-speed, high-torque carbon fiber spindle. The transmission component includes an annular air-passing frame and a transmission gear. The annular air-passing frame is fixedly connected to the gas flow area located on the lower side. The hollow metal tooth block contacts the outer arc surface of the annular air-passing frame. The transmission gear is in transmission engagement with a plurality of the hollow metal tooth blocks. A rotating shaft is rotatably connected inside the bucket-shaped mounting box, and the transmission gear is fixedly mounted on the rotating shaft.

[0011] At least one embodiment of the present invention provides a lightweight slide device for a matching high-speed, high-torque carbon fiber spindle. An exhaust pipe is connected between the gas flow area on the upper side and the bucket-shaped mounting box, and gas is used to cool the hollow metal tooth block located in the bucket-shaped mounting box.

[0012] At least one embodiment of the present invention provides a lightweight slide device for a matching high-speed, high-torque carbon fiber spindle. A closed sleeve is provided between the bottom of the drive device and the inner bottom wall of the slide housing. The carbon fiber spindle is located inside the closed sleeve. The top of the closed sleeve is connected to the gas flow area located on the lower side. Multiple exhaust channels are provided on the bottom circumference of the closed sleeve, and the exhaust channels penetrate the bottom of the slide housing.

[0013] The working principle and beneficial effects of this invention are as follows: 1. In this invention, when it is necessary to dissipate heat from the high-speed drive equipment and the carbon fiber spindle containing carbon fiber material, outside air is first drawn into the upper gas flow area, and then the airflow is delivered to the slide housing to directly cool the drive equipment inside the slide housing. After the airflow comes into contact with the drive equipment, it will heat up. In order to improve the heat dissipation effect of the airflow on the carbon fiber spindle, the heated airflow can be introduced into the lower gas flow area to reduce the airflow temperature. Then the airflow is delivered to the slide housing so that the airflow comes into direct contact with the carbon fiber spindle. After the carbon fiber spindle is sufficiently cooled, the gas is discharged.

[0014] 2. In this invention, during the process of transferring the gas into the gas flow area located on the lower side, the gas comes into contact with the hollow metal tooth block, so that the heat in the airflow is transferred to the hollow metal tooth block. The hollow metal tooth block will enter the bucket-shaped mounting box during the transmission process, and then the hollow metal tooth block will dissipate heat, so that the airflow continuously cools the drive equipment and the carbon fiber spindle. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the slide block housing in this invention. Figure 3 This is a partial cross-sectional structural schematic diagram of the sliding ram housing and heat exchanger housing in this invention; Figure 4 This is a partial cross-sectional structural diagram showing the cooperation of the heat exchanger box, drive shaft, gas flow area, suction fan and bucket-shaped mounting box in this invention; Figure 5 This is a partial cross-sectional structural diagram showing the interaction of the bucket-shaped mounting box, hollow metal toothed block, elastic fastening belt, annular air-passing frame, and transmission gear in this invention. Figure 6 This is a schematic diagram of the structure of the transmission screw, connecting sleeve seat, second gearbox, connecting insert shaft, connecting shaft seat and drive cylinder device in this invention.

[0017] In the diagram: 1. Slide ram housing; 2. Carbon fiber spindle; 3. Drive unit; 4. Heat exchanger housing; 5. Drive spindle; 6. Gas flow area; 7. Suction fan; 8. Through slot; 9. Dustproof plate; 10. Bucket-shaped mounting box; 11. Exhaust port; 12. Hollow metal toothed block; 13. Elastic fastening band; 14. Annular air passage frame; 15. Transmission gear; 16. Rotating shaft; 17. Exhaust cylinder; 18. Sealing sleeve; 19. Exhaust passage; 20. Motor drive mechanism; 21. First gearbox; 22. Transmission screw; 23. Receiving cylinder seat; 24. Temperature sensor; 25. Connecting cylinder seat; 26. Second gearbox; 27. Connecting insert shaft; 28. Connecting shaft seat; 29. ​​Drive cylinder device; 30. Partition plate; 31. Drive motor. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 2As shown, this embodiment proposes a lightweight ram device with a matching high-speed, high-torque carbon fiber spindle, including a ram housing 1. A carbon fiber spindle 2 is rotatably mounted through the bottom of the ram housing 1. A drive device 3 is mounted on the inner top of the ram housing 1 to drive the carbon fiber spindle 2 to rotate. The drive device 3 includes a rotor drive device 3. When the drive device 3 drives the carbon fiber spindle 2 containing carbon fiber material for a long time after starting, heat accumulation will occur at the connection between the drive device 3 and the carbon fiber spindle 2 and the ram housing 1. Therefore, in the daily use of the ram housing 1, it is necessary to consider the heat dissipation of the drive device 3 and the carbon fiber spindle 2. In order to reduce the weight of the entire device, the ram housing 1 used in this invention is made of a composite material of carbon fiber material and aluminum alloy material, so as to reduce the weight of the ram housing 1 while ensuring its strength.

[0020] like Figures 1 to 4 As shown, in this embodiment, a heat exchanger box 4 is also included. The heat exchanger box 4 is fixedly connected to the slide box 1. A drive shaft 5 is rotatably connected inside the heat exchanger box 4. A motor drive mechanism 20 and a first gearbox 21 for driving the drive shaft 5 to rotate are provided on the top of the heat exchanger box 4. The output end of the motor drive mechanism 20 and the drive shaft 5 are both connected to the first gearbox 21 for transmission. The drive shaft 5 is driven to rotate by the motor drive mechanism 20.

[0021] like Figures 1 to 4 As shown, in this embodiment, the heat exchanger box 4 is provided with two gas flow areas 6, and a partition plate 30 is provided between the two gas flow areas 6 to keep them sealed and separated. An air suction fan 7 is provided on the top of the gas flow area 6. The air suction fan 7 is driven and cooperates with the drive shaft 5. The air suction fan 7 is sleeved on the drive shaft 5. During the rotation of the drive shaft 5, the air suction fan 7 is driven to run. When the motor drive mechanism 20 drives the drive shaft 5 to rotate, the drive shaft 5 drives the air suction fan 7 to run at high speed to attract airflow.

[0022] like Figures 1 to 4 As shown, in this embodiment, both gas flow areas 6 are connected to the interior of the slide block housing 1, allowing external airflow to enter the slide block housing 1 through the upper gas flow area 6, and then enter the lower gas flow area 6 for cooling, thereby cooling the drive device 3 and the carbon fiber spindle 2, achieving sufficient heat dissipation for the drive device 3 and the carbon fiber spindle 2.

[0023] like Figures 1 to 4As shown, in this embodiment, a through groove 8 is provided on the heat exchanger box 4. The through groove 8 is connected to the gas flow area 6 located on the upper side. A dust-proof plate 9 is provided on the through groove 8. During the rotation of the suction fan 7 located on the upper side, the air outside the slide box 1 is introduced into the gas flow area 6 located on the upper side through the through groove 8, and the dust-proof plate 9 is used to filter the dust in the air.

[0024] like Figures 1 to 5 As shown, in this embodiment, a gas cooling structure is connected between the two gas flow areas 6. The gas cooling structure is used to cool the gas in the slide ram housing 1 as it is transported to the lower gas flow area 6. The gas cooling structure includes a bucket-shaped mounting box 10, hollow metal toothed blocks 12, and a transmission assembly. The bucket-shaped mounting box 10 is connected to the lower gas flow area 6. Exhaust slots 11 are provided on both sides of the bucket-shaped mounting box 10. The number of hollow metal toothed blocks 12 is set to multiple, and the multiple hollow metal toothed blocks 12 are connected by elastic fastening straps 13. As the gas enters the lower gas flow area 6 from the slide ram housing 1, it is cooled after passing through the hollow metal toothed blocks 12. The housing 10 is equipped with a transmission assembly that drives multiple hollow metal toothed blocks 12 to move in a cycle. After the airflow in the slide ram housing 1 is introduced into the gas flow area 6 located on the lower side, the gas is transported from the lower gas flow area 6 into the closed sleeve 18. This reduces the problem of the gas temperature rising due to heat dissipation from the drive device 3. When the gas enters the lower gas flow area 6, it will first contact the multiple hollow metal toothed blocks 12. The hollow metal toothed blocks 12 transfer the heat in the gas. During the cyclic transmission of the multiple hollow metal toothed blocks 12 and the elastic fastening belt 13, the heated gas will contact the multiple hollow metal toothed blocks 12 in sequence, so as to effectively transfer and dissipate the heat in the gas.

[0025] like Figures 1 to 5 As shown, in this embodiment, the transmission assembly includes an annular gas-passing frame 14 and a transmission gear 15. The annular gas-passing frame 14 is fixedly connected to the gas flow area 6 located on the lower side. The hollow metal toothed blocks 12 are in contact with the outer arc surface of the annular gas-passing frame 14. The transmission gear 15 is in transmission cooperation with multiple hollow metal toothed blocks 12. A rotating shaft 16 is rotatably connected inside the bucket-shaped mounting box 10. The transmission gear 15 is fixedly mounted on the rotating shaft 16. When it is necessary to drive multiple hollow metal toothed blocks 12 to perform cyclic transmission, a drive motor 31 is provided on the bucket-shaped mounting box 10. The output end of the drive motor 31 is connected to the rotating shaft 16. The drive motor 31 is started to drive the rotating shaft 16 to rotate, so that the rotating shaft 16 drives the transmission gear 15 to rotate. The transmission gear 15 drives multiple hollow metal toothed blocks 12 to move cyclically, thereby transferring heat in the heated gas. The annular gas-passing frame 14 is used to limit the transmission path of multiple hollow metal toothed blocks 12.

[0026] like Figures 1 to 4 As shown, in this embodiment, an exhaust cylinder 17 is connected between the upper gas flow area 6 and the hopper-shaped mounting box 10. Gas is used to cool the hollow metal toothed block 12 located in the hopper-shaped mounting box 10. The gas transported downward in the upper gas flow area 6 will not only enter the slide box 1, but also enter the hopper-shaped mounting box 10 through the exhaust cylinder 17 to cool the heated hollow metal toothed block 12, and the gas will be discharged through the exhaust port 11.

[0027] like Figures 1 to 4 As shown, in this embodiment, a closed sleeve 18 is provided between the bottom of the drive device 3 and the inner bottom wall of the slide block housing 1. The carbon fiber spindle 2 is located inside the closed sleeve 18. The top of the closed sleeve 18 is connected to the gas flow area 6 located on the lower side. Multiple exhaust channels 19 are provided around the bottom circumference of the closed sleeve 18. The exhaust channels 19 penetrate the bottom of the slide block housing 1 and transport the gas cooled by the hollow metal tooth block 12 into the closed sleeve 18, so that the airflow cools the carbon fiber spindle 2. Then, the cooled gas diffuses and is discharged through the multiple exhaust channels 19.

[0028] like Figures 3 to 4 and Figure 6 As shown, in this embodiment, when it is necessary to adjust the feed distance of the drive device 3 and the carbon fiber spindle 2 so that the carbon fiber spindle 2 drives the tool to perform surface treatment on the workpiece, a transmission screw 22 is rotatably connected inside the slide ram housing 1. A receiving cylinder seat 23 is sleeved on the transmission screw 22. The receiving cylinder seat 23 is driven by the transmission screw 22 through a ball nut assembly. The receiving cylinder seat 23 is fixedly connected to the top of the drive device 3, and a temperature sensor 24 for measuring the temperature of the drive device 3 is installed inside the receiving cylinder seat 23. A connecting cylinder seat 25 is rotatably connected to the top of the heat exchanger housing 4. The connecting cylinder seat 25 is driven by the transmission screw 22 through a second gearbox 26. A connecting insert shaft 27 is slidably connected through the top of the drive spindle 5. The connecting insert shaft 27 is inserted into the connecting cylinder seat 25. The middle part of the connecting insert shaft 27 rotates. A connecting shaft seat 28 is fitted inside the heat exchanger housing 4. A drive cylinder device 29 is installed inside the heat exchanger housing 4 to drive the connecting shaft seat 28 and the connecting insert shaft 27 to move longitudinally. When it is necessary to adjust the feed height of the drive device 3 and the carbon fiber spindle 2, the drive cylinder device 29 is activated to drive the connecting shaft seat 28 and the connecting insert shaft 27 to move longitudinally. The connecting insert shaft 27 enters the connecting cylinder seat 25, so that the connecting insert shaft 27 and the connecting cylinder seat 25 are engaged and connected. During the rotation of the drive spindle 5, the connecting shaft seat 28 and the connecting insert shaft 27 are driven to rotate. Under the action of the second gearbox 26, the transmission screw 22 is rotated, which drives the receiving cylinder seat 23, the drive device 3 and the carbon fiber spindle 2 to move longitudinally, changing the feed distance of the carbon fiber spindle 2. After moving to the designated position, the insertion between the connecting insert shaft 27 and the connecting cylinder seat 25 is released.

[0029] The working principle of the lightweight slide device with a matching high-speed, high-torque carbon fiber spindle is as follows: First, outside air is drawn into the upper gas flow area 6, and then the airflow is delivered to the slide ram housing 1 to directly cool the drive device 3 inside the slide ram housing 1. After the airflow comes into contact with the drive device 3, the temperature will rise. In order to improve the heat dissipation effect of the airflow on the carbon fiber spindle 2, the heated airflow can be introduced into the lower gas flow area 6, so that the airflow comes into contact with multiple hollow metal tooth blocks 12 in the lower gas flow area 6 to reduce the airflow temperature. After the airflow temperature is reduced by the lower gas flow area 6, the airflow continues to be delivered to the slide ram housing 1, so that the airflow comes into direct contact with the carbon fiber spindle 2. After the carbon fiber spindle 2 is fully cooled, the air is discharged. The gas transported downward in the upper gas flow area 6 will not only enter the slide box 1, but also enter the bucket-shaped installation box 10 through the exhaust pipe 17 to cool the heated hollow metal tooth block 12, and the gas will be discharged through the exhaust port 11.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lightweight ram device with a matching high-speed, high-torque carbon fiber spindle, comprising a ram housing (1), wherein a carbon fiber spindle (2) is rotatably mounted through the bottom of the ram housing (1), and a drive device (3) for rotating the carbon fiber spindle (2) is provided on the inner top of the ram housing (1), characterized in that, Also includes: A heat exchanger box (4) is fixedly connected to the slide box (1) through the heat exchanger box (4), and a drive shaft (5) is rotatably connected inside the heat exchanger box (4). The heat exchanger box (4) is provided with two gas flow areas (6). A suction fan (7) is provided at the top of the gas flow area (6). The suction fan (7) is driven by the drive spindle (5). Both gas flow areas (6) are connected to the interior of the slide box (1), so that the external airflow enters the slide box (1) through the upper gas flow area (6) and then enters the lower gas flow area (6) to cool down, and then cools the drive device (3) and the carbon fiber spindle (2). A gas cooling structure is provided between the two gas flow areas (6). The gas cooling structure is used to cool the gas in the slide box (1) during the process of transporting the gas to the gas flow area (6) located on the lower side.

2. The lightweight slide device for a high-speed, high-torque carbon fiber spindle according to claim 1, characterized in that, The heat exchanger box (4) is provided with a through groove (8), which is connected to the gas flow area (6) located on the upper side. The through groove (8) is provided with a dustproof plate (9).

3. The lightweight slide device for a high-speed, high-torque carbon fiber spindle according to claim 2, characterized in that, The suction fan (7) is mounted on the drive spindle (5), and the drive spindle (5) drives the suction fan (7) to operate during rotation.

4. The lightweight slide device for a high-speed, high-torque carbon fiber spindle according to claim 3, characterized in that, The gas cooling structure includes: A hopper-shaped mounting box (10) is connected to the gas flow area (6) located on the lower side, and exhaust slots (11) are provided on both sides of the hopper-shaped mounting box (10). Hollow metal toothed blocks (12), the number of hollow metal toothed blocks (12) is set to multiple, and the multiple hollow metal toothed blocks (12) are connected by elastic fastening bands (13). During the process of entering the gas flow area (6) located on the lower side from the slide box (1), the temperature drops after passing through the hollow metal toothed blocks (12); The transmission assembly is provided on the bucket-shaped mounting box (10) to drive the multiple hollow metal toothed blocks (12) to move cyclically.

5. A lightweight slide device for a high-speed, high-torque carbon fiber spindle according to claim 4, characterized in that, The transmission assembly includes: An annular gas passage frame (14) is fixedly connected to the gas flow area (6) located on the lower side, and the hollow metal tooth block (12) is in contact with the outer arc surface of the annular gas passage frame (14). The transmission gear (15) is engaged with multiple hollow metal tooth blocks (12) in a transmission cooperation. The bucket-shaped mounting box (10) is rotatably connected to a rotating shaft (16), and the transmission gear (15) is fixedly mounted on the rotating shaft (16).

6. A lightweight slide device for a high-speed, high-torque carbon fiber spindle according to claim 5, characterized in that, An exhaust cylinder (17) is connected between the gas flow area (6) located on the upper side and the bucket-shaped mounting box (10) to use gas to cool the hollow metal tooth block (12) located in the bucket-shaped mounting box (10).

7. A lightweight slide device for a high-speed, high-torque carbon fiber spindle according to claim 6, characterized in that, A closed sleeve (18) is provided between the bottom of the drive device (3) and the inner bottom wall of the slide box (1). The carbon fiber spindle (2) is located inside the closed sleeve (18). The top of the closed sleeve (18) is connected to the gas flow area (6) located on the lower side. Multiple exhaust channels (19) are provided on the bottom circumference of the closed sleeve (18). The exhaust channels (19) penetrate the bottom of the slide box (1).

Images