Aluminum die casting fine milling device

Abstract

The application relates to an aluminum die casting fine milling device and belongs to the milling technical field.The milling support is fixedly installed at the lower end of a supporting base, one side of the milling support is fixedly installed with a guide sliding rod, the guide sliding rod is slidably installed with a sliding table, one side of the sliding table is fixedly installed with a fixing frame, one side of the fixing frame is fixedly installed with a mounting body, the lower end of the mounting body is fixedly connected with a fixing support, an energy storage mechanism and a stabilizing mechanism are arranged in the mounting body, a driving shaft is rotatably arranged in the mounting body, the one end of the driving shaft extends to the outside of the mounting body and is fixedly installed with a cutter fixing body.The energy storage mechanism can store energy by compressing a spring during milling, reset and exhaust after shutdown, forcibly cool the milling cutter by using high-speed airflow, solve the problem of difficult heat dissipation after the cutter is withdrawn, avoid the accumulation of high-temperature induced accumulations, improve the yield, and prevent the milling cutter from being scalded after cooling, and eliminate the safety hazards.

Description

Technical Field

[0001] This invention relates to the field of milling technology, specifically to a precision milling device for aluminum die castings. Background Technology

[0002] Due to their advantages such as light weight, high strength, and high forming efficiency, aluminum die castings are widely used in the automotive, new energy, and communications industries. As a key process in the subsequent finishing of aluminum die castings, precision milling directly determines the dimensional accuracy and surface properties of the product. However, existing precision milling equipment still has many technical defects that need to be solved in actual production.

[0003] First, tool chatter is a prominent problem. In precision milling, especially in deep cavity and long overhang conditions, chatter is prone to occur during high-speed cutting. The amplitude of the tool tip vibration continues to amplify during the cutting process, resulting in defective workpieces.

[0004] Secondly, after the tool is removed from the cutting fluid for cooling, the residual heat is difficult to dissipate. Natural heat dissipation is extremely inefficient. During workpiece changes, the tool remains at a high temperature. When machining the next workpiece, the hot tool cuts directly in, resulting in a higher initial cutting temperature. The tool-chip interface is more likely to reach the bonding temperature, leading to the formation of built-up edge and reducing the workpiece yield.

[0005] Furthermore, when changing tools, it is difficult to cool them down. When operators manually change tools, the tool holder becomes too hot, causing burns and posing a safety hazard. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a precision milling device for aluminum die castings, which solves the problems of high defect rate and high safety hazards.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a precision milling device for aluminum die castings, comprising a milling bracket, a support base fixedly installed at the lower end of the milling bracket, a guide slide rod fixedly installed on one side of the milling bracket, a slide table slidably installed on the guide slide rod, a fixing frame fixedly installed on one side of the slide table, and a mounting body fixedly installed on one side of the fixing frame. The lower end of the mounting body is fixedly connected to a fixing bracket, and the mounting body is provided with an energy storage mechanism and a stabilizing mechanism. A drive shaft is rotatably mounted inside the mounting body, and one end of the drive shaft extends to the outside of the mounting body and is fixedly mounted with a tool holder. The energy storage mechanism includes an air-inhaling slider, a spring is fixedly installed on the lower side of the air-inhaling slider, and a fixed small disc is fixedly installed on the end of the spring away from the air-inhaling slider. The stabilizing mechanism includes a compensation spring, a fixed plate is fixedly installed on the upper end of the compensation spring, and a detection block is fixedly installed on the end of the compensation spring away from the fixed plate; Two symmetrically distributed fixing blocks are fixedly installed on the outside of the mounting body, and a gas supply pipe is fixedly installed on one side of each fixing block.

[0008] Furthermore, there are two detection blocks, each with an annular groove on its opposite sides. Ball bearings are rotatably mounted on the inner wall of the annular grooves. A small fixing block is rotatably mounted on the lower side of each detection block, and the small fixing block is rotatably connected to the inner wall of the mounting body.

[0009] Furthermore, the detection block near the fixed disk is rotatably connected to the outside of the drive shaft, the detection block near the fixed small block is fixedly connected to the outside of the drive shaft, and the inside of the fixed small block is rotatably connected to the outside of the drive shaft.

[0010] Furthermore, an isolation block is rotatably mounted on the upper surface of the fixed disk, and the interior of the fixed disk and the isolation block is rotatably connected to the outside of the drive shaft. The interior of the fixed small disc is fixedly connected to the outside of the drive shaft, and the spring is sleeved on the outside of the drive shaft. The outside of the drive shaft is movably connected to the interior of the suction slider.

[0011] Furthermore, a centrifugal mechanism is provided between the fixed small disc and the suction slider. The centrifugal mechanism includes a connecting rod, one end of which is provided with a centrifugal connecting rod. Two symmetrically distributed rotating grooves are opened on the periphery of the fixed small disc, and centrifugal shafts are mounted on both sides of the rotating grooves for rotation.

[0012] Furthermore, two symmetrically distributed fixed frames are fixedly installed on the lower surface of the air intake slider. The fixed frames are rotatably mounted on opposite sides with a rotating shaft. The outer side of the rotating shaft is rotatably connected to one end of the connecting rod. A buffer opening is provided through the lower half of the connecting rod.

[0013] Furthermore, a buffer rod is fixedly installed at the end of the connecting rod away from the rotating shaft, and a plurality of rolling balls are rotatably installed at the end of the buffer rod away from the connecting rod.

[0014] Furthermore, a buffer rod is fixedly installed at one end of the centrifugal connecting rod near the connecting rod, and a connecting shaft is rotatably installed on both sides of the buffer opening relative to the inner walls. The end of the buffer rod away from the centrifugal connecting rod is rotatably connected to the outside of the connecting shaft, and the end of the centrifugal connecting rod away from the buffer rod is rotatably connected to the outside of the centrifugal shaft.

[0015] Furthermore, one end of the air supply pipe extends into the interior of the mounting body, and the other end of the air supply pipe extends to one side of the fixed bracket. A nozzle is fixedly installed at the end of the air supply pipe away from the interior of the mounting body. A one-way air inlet is fixedly installed on the outside of the mounting body, and the one-way air inlet communicates with the interior of the mounting body.

[0016] Furthermore, a motor is fixedly installed on one side of the milling bracket, and a ball screw is fixedly connected to the output end of the motor. The ball screw is threadedly connected to the inside of the slide table. A driver is fixedly installed on the upper end of the fixed frame, and a control device and a guide rod are fixedly installed on the upper side of the support base. The guide rod is slidably connected to the support slide table, and a ball screw is threadedly connected to the inside of the support slide table.

[0017] Compared with the prior art, the present invention provides a precision milling device for aluminum die castings, which has the following beneficial effects: 1. This invention, by setting up an energy storage mechanism, can compress the spring to store energy during milling, and reset and exhaust the air after the machine stops. It uses high-speed airflow to force-cool the milling cutter, which solves the problem of difficult heat dissipation after tool retraction, avoids high temperature-induced built-up edge, improves the yield, and at the same time, the cooled milling cutter can prevent burns during tool changing and eliminate safety hazards.

[0018] 2. By setting up a stabilizing mechanism, the present invention can effectively attenuate tool chatter during deep cavity long overhang machining by using pre-tensioned compensation springs and rolling ball buffers, maintain tool tip stability, ensure machining dimensional accuracy, reduce workpiece defect rate, and provide reliable buffering to avoid accidental risks caused by severe vibration.

[0019] 3. By setting up a centrifugal mechanism, the present invention can automatically drive the suction slider to compress the spring during cutting by means of the centrifugal force of the rolling ball. It can store energy for cooling when the machine stops without additional power. After the tool is retracted, the cooling airflow is released immediately, which inhibits the formation of built-up edge, reduces the defect rate, facilitates rapid cooling, and improves the safety of tool changing.

[0020] 4. By setting a nozzle and a one-way valve, this invention can form a high-speed jet by reducing the nozzle diameter, and can also work with the one-way valve to cool the milling cutter at the moment of machine stop, quickly cooling down to avoid sticking and wear caused by hot cutter cutting in, reducing the defect rate, and eliminating the risk of burns when manually changing the cutter.

[0021] 5. By setting an isolation block, the present invention can isolate the fixed small disc from the fixed disc, prevent the compensation spring from tortuous deformation and excessive wear, ensure that the stabilizing mechanism effectively suppresses tool vibration, continuously guarantee machining accuracy, reduce the defect rate, and avoid safety risks such as spring failure and ejection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the fixed support structure of the present invention; Figure 3 This is a schematic diagram of the unidirectional air inlet structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the mounting body of the present invention; Figure 5This is a schematic diagram of the suction slider structure of the present invention; Figure 6 This is a schematic diagram of the unfolded structure of the fixed disk and the drive shaft of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the detection block of the present invention; Figure 8 This is a schematic diagram of the fixed small disc structure of the present invention; Figure 9 This is a schematic diagram of the spring structure of the present invention; Figure 10 For the present invention Figure 9 Enlarged schematic diagram of the structure at point A in the diagram; Figure 11 For the present invention Figure 9 Enlarged schematic diagram of the structure at point B in the diagram; Figure 12 This is a schematic diagram of the centrifugal connecting rod structure of the present invention; Figure 13 For the present invention Figure 12 A magnified schematic diagram of the structure at point C.

[0023] In the diagram: 1. Milling bracket; 2. Driver; 3. Guide slide rod; 31. Motor; 32. Slide table; 33. Ball screw; 4. Support base; 41. Ball screw one; 42. Guide rod; 43. Support slide; 5. Control device; 6. Fixture; 7. Mounting body; 8. Tool holder; 9. Fixing bracket; 10. Nozzle; 101. Gas delivery pipe; 102. Fixing block; 11. One-way air intake; 12. Energy storage mechanism; 121. Air intake slider; 122. Spring; 123. Fixed small disc; 1231. Rotating groove; 13. Stabilizing mechanism; 131. Fixed plate; 132. Isolating block; 133. Compensating spring; 134. Detection block; 1341. Annular groove; 1342. Ball bearing; 135. Fixing block; 14. Drive shaft; 15. Centrifugal mechanism; 151. Connecting rod; 1511. Buffer port; 1512. Fixed frame; 1519. Buffer rod; 1528. Connecting shaft; 1529. Buffer rod one; 152. Centrifugal connecting rod; 1521. Centrifugal shaft; 1533. Rolling ball; 1534. Rotating shaft. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 13 This embodiment of an aluminum die-casting precision milling device includes a milling bracket 1. A motor 31 is fixedly mounted on one side of the milling bracket 1. A ball screw 33 is fixedly connected to the output end of the motor 31. The ball screw 33 is internally threaded to a slide 32. Thus, the cooperation of the motor 31, the ball screw 33, and the slide 32 ensures the transverse movement of the milling tool. A support base 4 is fixedly mounted on the lower end of the milling bracket 1. A control device 5 and a guide rod 42 are fixedly mounted on the upper side of the support base 4. The control device 5 is used to control the operation of the motor 31, the driver 2, the drive motor, and the mounting body 7. The guide rod 42 is slidably connected to the support slide 43. The support slide 43 is internally threaded with a ball screw 41. One end of the ball screw 41 is fixedly connected to the output end of the drive motor. The drive motor is existing technology and will not be described in detail here, nor is it shown in the figure. A guide slide 3 is fixedly installed on one side of the milling bracket 1. A slide 32 is slidably installed on the guide slide 3. A fixed frame 6 is fixedly installed on one side of the slide 32. A driver 2 is fixedly installed on the upper end of the fixed frame 6. The driver 2 is a motor. The drive of the driver 2 can drive the ball screw 2 on one side of the fixed frame 6, thereby ensuring the vertical movement of the milling tool. The ball screw 2 is existing technology and will not be described in detail here, nor is it shown in the figure. A mounting body 7 is fixedly installed on one side of the mounting bracket 6. A motor is fixedly installed inside the mounting body 7. This motor is existing technology and will not be described in detail here, nor is it shown in the diagram. A one-way air inlet 11 is fixedly installed on the outside of the mounting body 7. A one-way valve is fixedly installed inside the one-way air inlet 11. The one-way valve opens when air intake is needed and closes when exhaust is needed. The one-way air inlet 11 communicates with the interior of the mounting body 7. A fixed bracket 9 is fixedly connected to the lower end of the mounting body 7. The fixed bracket 9 supports the mounting body 7 and resists vibrations caused by milling. An energy storage mechanism 12 and a stabilizing mechanism 13 are provided inside the mounting body 7. A drive shaft 14 is rotatably mounted inside the mounting body 7. The drive shaft 14 is fixedly connected to the output end of the motor inside the mounting body 7. To ensure normal and stable milling operation, the outer side of the drive shaft 14 is movably connected to the inside of the suction slider 121. Therefore, when the drive shaft 14 rotates, the suction slider 121 can remain stationary. When the spring 122 expands and contracts, the suction slider 121 slides up and down on the drive shaft 14. One end of the drive shaft 14 extends to the outside of the mounting body 7 and is fixedly mounted with a tool fixing body 8. The tool fixing body 8 can fix the milling cutter, thereby ensuring stable milling operation. The energy storage mechanism 12 includes the suction slider 121. The suction slider 121 can exhaust and draw air inside the mounting body 7 by sliding up and down. Two symmetrically distributed fixing frames 1512 are fixedly mounted on the lower surface of the suction slider 121. The fixing frames 1512 are used to support the connecting rod 151. A rotating shaft 1534 is rotatably mounted on both sides of a fixed frame 1512. The outer side of the rotating shaft 1534 is rotatably connected to one end of a connecting rod 151. A spring 122 is fixedly mounted on the lower side of the suction slider 121. The spring 122 is sleeved on the outer side of the drive shaft 14. A fixed small disc 123 is fixedly mounted on the end of the spring 122 away from the suction slider 121. The fixed small disc 123 provides power for the contraction of the spring 122 and provides support for the centrifugal connecting rod 152. Two symmetrically distributed rotating grooves 1231 are opened on the periphery of the fixed small disc 123. A centrifugal rotating shaft 1521 is rotatably mounted on both sides of the rotating grooves 1231. The interior of the fixed small disc 123 is fixedly connected to the outer side of the drive shaft 14. The rotation of the drive shaft 14 can rotate the fixed small disc 123. The disk 123 is driven, thereby fixing the small disk 123 to rotate the centrifugal connecting rod 152. A centrifugal mechanism 15 is provided between the fixed small disk 123 and the suction slider 121. The centrifugal mechanism 15 includes a connecting rod 151. A buffer rod 1519 is fixedly installed at the end of the connecting rod 151 away from the rotating shaft 1534. The buffer rod 1519 has the ability to extend and retract, so it can ensure that the connecting rod 151 and the centrifugal connecting rod 152 rotate stably and avoid being blocked by the inner wall of the mounting body 7. Several rolling balls 1533 are rotatably installed at the end of the buffer rod 1519 away from the connecting rod 151. The rolling balls 1533 can play the role of counterweight to increase the centrifugal effect, while avoiding the buffer rod 1519 from directly contacting the inner wall of the mounting body 7. A buffer opening 1511 is provided through the lower half of the connecting rod 151. A connecting shaft 1528 is rotatably mounted on both sides of the buffer opening 1511, rotating together with the inner walls of the two sides. A centrifugal connecting rod 152 is provided at one end of the connecting rod 151. The end of the centrifugal connecting rod 152 away from the buffer rod 1529 is rotatably connected to the outer side of the centrifugal shaft 1521. A buffer rod 1529 is fixedly mounted on the end of the centrifugal connecting rod 152 near the connecting rod 151. The end of the buffer rod 1529 away from the centrifugal connecting rod 152 is rotatably connected to the outer side of the connecting shaft 1528. The combined use of the buffer opening 1511 and the connecting shaft 1528 further prevents the buffer rod 1529 from directly contacting the inner wall of the mounting body 7. The stabilizing mechanism 13 includes a compensating spring 133, which is initially pre-tightened, thus fixing the detection block 134. Simultaneously, when the milling cutter and the tool fixing body 8... During vibration, the amplitude can be reduced and the vibration generated by milling can be buffered by the slight elastic compensation of the compensation spring 133. The upper end of the compensation spring 133 is fixedly mounted with a fixed plate 131. An isolation block 132 is rotatably mounted on the upper surface of the fixed plate 131. The rotatably mounted isolation block 132 can prevent the fixed small disc 123 from directly contacting the fixed plate 131. The rotation of the fixed small disc 123 can only drive the isolation block 132 with a certain probability. It cannot directly contact the fixed plate 131 to avoid excessive wear, nor can it cause the compensation spring 133 to be torsional deformed and lose its pre-tightening effect. The fixed plate 131 and the isolation block 132 are rotatably connected to the outside of the drive shaft 14. A detection block 134 is fixedly mounted on the end of the compensation spring 133 away from the fixed plate 131. There are two detection blocks 134. The detection block 134 near the fixed plate 131 is rotatably connected to the outside of the drive shaft 14. Therefore, the rotation of the drive shaft 14 cannot drive the detection block 134 at this location. The detection block 134 near the fixed small block 135 is fixedly connected to the outside of the drive shaft 14. The detection block 134 at this location can be driven by the drive shaft 14. Annular grooves 1341 are formed on both opposite sides of the detection block 134. A ball bearing 1342 is rotatably mounted on the inner wall of the annular groove 1341. The ball bearing 1342 can rotate inside the annular groove 1341 and directly prevents the two detection blocks 134 from rubbing against each other. A fixed small block 135 is rotatably mounted on the lower side of the detection block 134. The interior of the fixed small block 135 is connected to... The drive shaft 14 is rotatably connected to the outside. The fixed block 135 can effectively prevent the lower side of the detection block 134 from directly rubbing against the inner wall of the mounting body 7. The fixed block 135 is rotatably connected to the inner wall of the mounting body 7. Two symmetrically distributed fixed blocks 102 are fixedly installed on the outside of the mounting body 7. An air supply pipe 101 is fixedly installed on one side of the fixed block 102. One end of the air supply pipe 101 extends into the interior of the mounting body 7, and a one-way valve is fixedly installed at the connection between the air supply pipe 101 and the mounting body 7. One end of the air supply pipe 101 extends to one side of the fixed bracket 9. A nozzle 10 is fixedly installed at the end of the air supply pipe 101 away from the interior of the mounting body 7. The diameter of the air outlet of the nozzle 10 is smaller than the diameter of the air supply pipe 101. Among them, the control device 5, control motor 31, driver 2, drive motor, mounting body 7, and check valve are existing technologies and will not be described in detail here. The check valve and drive motor are not shown in the figure.

[0026] The working principle of the above embodiment is as follows: When milling begins, the workpiece is first placed on the support slide 43, and then the motor 31, ball screw 41, driver 2 and mounting body 7 are operated by the control device 5. At this time, the drive shaft 14 starts to rotate, the fixed small disc 123 starts to rotate with the drive shaft 14, and at the same time, one of the detection blocks 134 rotates with the drive shaft 14. The drive shaft 14 drives the tool fixing body 8, and at this time the tool fixing body 8 drives the milling cutter to process the workpiece. Simultaneously, the rotation of the fixed small disc 123 will rotate the centrifugal connecting rod 152, which in turn will rotate the connecting rod 151. At this time, the connecting rod 151 will rotate the suction slider 121. Therefore, the suction slider 121 can rotate outside the drive shaft 14. When the connecting rod 151 and the centrifugal connecting rod 152 start to rotate, the ball 1533 moves away from the spring 122 under the action of the ball and the centrifugal force. At the same time, the connecting rod 151 rotates under the support of the rotating shaft 1534, and the centrifugal connecting rod 152 rotates under the support of the centrifugal rotating shaft 1521. At this time, the suction slider 121 slides downward, and the spring 122 contracts. When the ball 1533 contacts the inner wall of the mounting body 7, the buffer rod 1519 and the buffer rod 1529 contract. At the same time, when the suction slider 121 moves downward, the one-way valve between the air supply pipe 101 and the mounting body 7 is closed, and the one-way valve between the one-way air inlet 11 and the mounting body 7 is opened. At this time, the airflow enters the interior of the mounting body 7 from the one-way air inlet 11. When the spring 122 contracts to its maximum value, the suction slider 121 stops moving, but the fixed small disc 123 continues to rotate. When the tool holder 8 and the milling cutter collide or cause other reasons to cause amplitude, the amplitude is transmitted to one of the detection blocks 134 through the drive shaft 14. The detection block 134 transmits the amplitude through the ball bearing 1342, thus the ball bearing 1342 performs the first buffering. The ball bearing 1342 transmits the amplitude to another detection block 134 for buffering again. At the same time, the compensation spring 133 supports and tightens the detection block 134, thereby reducing the amplitude and achieving the buffering effect. After milling is completed, the drive shaft 14 stops rotating, and the fixed small disc 123 stops rotating. At this time, the above operation is performed in the direction described above. The suction slider 121 can move upward under the reset of the spring 122. At this time, the one-way valve at the air supply pipe 101 and the mounting body 7 is opened, and the one-way valve at the one-way air inlet 11 and the mounting body 7 is closed. The gas is sprayed from the nozzle 10 onto the milling cutter and the tool fixing body 8. At the same time, the diameter setting of the nozzle 10 can ensure that the airflow is sprayed out at high speed and uniform speed. At this time, the milling is completed.

[0027] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

Claims

1. A precision milling device for aluminum die castings, comprising a milling bracket (1), wherein a support base (4) is fixedly installed at the lower end of the milling bracket (1), and a guide slide rod (3) is fixedly installed on one side of the milling bracket (1), characterized in that: The guide slide rod (3) is slidably mounted with a slide table (32), a fixed frame (6) is fixedly mounted on one side of the slide table (32), and a mounting body (7) is fixedly mounted on one side of the fixed frame (6). The lower end of the mounting body (7) is fixedly connected to a fixed bracket (9), and the mounting body (7) is provided with an energy storage mechanism (12) and a stabilizing mechanism (13). The mounting body (7) has a drive shaft (14) rotatably mounted inside it. One end of the drive shaft (14) extends to the outside of the mounting body (7) and is fixedly mounted with a tool holder (8). The energy storage mechanism (12) includes an air intake slider (121), a spring (122) is fixedly installed on the lower side of the air intake slider (121), and a fixed small disc (123) is fixedly installed on the end of the spring (122) away from the air intake slider (121). The stabilizing mechanism (13) includes a compensation spring (133), a fixed plate (131) is fixedly installed on the upper end of the compensation spring (133), and a detection block (134) is fixedly installed on the end of the compensation spring (133) away from the fixed plate (131). Two symmetrically distributed fixing blocks (102) are fixedly installed on the outside of the mounting body (7), and a gas supply pipe (101) is fixedly installed on one side of the fixing block (102).

2. The precision milling device for aluminum die castings according to claim 1, characterized in that: There are two detection blocks (134). Each detection block (134) has an annular groove (1341) on both sides. A ball bearing (1342) is rotatably installed on the inner wall of the annular groove (1341). A fixed block (135) is rotatably installed on the lower side of the detection block (134). The fixed block (135) is rotatably connected to the inner wall of the mounting body (7).

3. The precision milling device for aluminum die castings according to claim 2, characterized in that: The detection block (134) near the fixed plate (131) is rotatably connected to the outside of the drive shaft (14), and the detection block (134) near the fixed small block (135) is fixedly connected to the outside of the drive shaft (14). The inside of the fixed small block (135) is rotatably connected to the outside of the drive shaft (14).

4. The precision milling device for aluminum die castings according to claim 1, characterized in that: An isolation block (132) is rotatably mounted on the upper surface of the fixed disk (131). The interior of the fixed disk (131) and the isolation block (132) is rotatably connected to the outside of the drive shaft (14). The interior of the fixed small disc (123) is fixedly connected to the outside of the drive shaft (14). The spring (122) is sleeved on the outside of the drive shaft (14). The outside of the drive shaft (14) is movably connected to the interior of the suction slider (121).

5. The precision milling device for aluminum die castings according to claim 1, characterized in that: A centrifugal mechanism (15) is provided between the fixed small disc (123) and the suction slider (121). The centrifugal mechanism (15) includes a connecting rod (151), and a centrifugal connecting rod (152) is provided at one end of the connecting rod (151). Two symmetrically distributed rotating grooves (1231) are opened on the periphery of the fixed small disc (123). Centrifugal shafts (1521) are installed on both sides of the rotating grooves (1231) for rotation.

6. The precision milling device for aluminum die castings according to claim 5, characterized in that: Two symmetrically distributed fixed frames (1512) are fixedly installed on the lower surface of the air-suction slider (121). The fixed frames (1512) are rotatably mounted on opposite sides with a rotating shaft (1534). The outer side of the rotating shaft (1534) is rotatably connected to one end of the connecting rod (151). The lower half of the connecting rod (151) is provided with a buffer opening (1511).

7. The precision milling device for aluminum die castings according to claim 6, characterized in that: A buffer rod (1519) is fixedly installed at the end of the connecting rod (151) away from the rotating shaft (1534), and a plurality of rolling balls (1533) are rotatably installed at the end of the buffer rod (151) away from the connecting rod (151).

8. The precision milling device for aluminum die castings according to claim 6, characterized in that: A buffer rod (1529) is fixedly installed at one end of the centrifugal connecting rod (152) near the connecting rod (151). A connecting shaft (1528) is rotatably installed on the buffer opening (1511) relative to the inner walls on both sides. The end of the buffer rod (1529) away from the centrifugal connecting rod (152) is rotatably connected to the outside of the connecting shaft (1528). The end of the centrifugal connecting rod (152) away from the buffer rod (1529) is rotatably connected to the outside of the centrifugal shaft (1521).

9. The precision milling device for aluminum die castings according to claim 1, characterized in that: One end of the gas supply pipe (101) extends into the interior of the mounting body (7), and the other end of the gas supply pipe (101) extends to one side of the fixed bracket (9). A nozzle (10) is fixedly installed at the end of the gas supply pipe (101) away from the interior of the mounting body (7). A one-way air inlet (11) is fixedly installed on the outside of the mounting body (7), and the one-way air inlet (11) communicates with the interior of the mounting body (7).

10. The precision milling device for aluminum die castings according to claim 1, characterized in that: A motor (31) is fixedly installed on one side of the milling bracket (1). A ball screw (33) is fixedly connected to the output end of the motor (31). The ball screw (33) is internally threaded to the slide (32). A driver (2) is fixedly installed on the upper end of the fixed frame (6). A control device (5) and a guide rod (42) are fixedly installed on the upper side of the support base (4). The guide rod (42) is slidably connected to the support slide (43). A ball screw (41) is internally threaded to the support slide (43).

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