Automatic milling device for die steel
By converting the centrifugal force of the shaft into axial thrust, providing dynamic clamping force and adaptive cutting fluid adjustment, the problem of tool vibration in high-speed milling of mold steel is solved, improving machining accuracy and efficiency, and reducing tool wear and cutting fluid consumption.
Patent Information
- Application Number
- CN202610091420.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-23
- Publication Date
- 2026-02-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When mold steel is machined at high speed, high-frequency vibrations are generated between the tool and the spindle, which affects the machining accuracy and accelerates the wear of the tool and the spindle. Existing solutions, such as reducing the cutting speed or replacing the tool holder, result in reduced machining efficiency.
By converting the centrifugal force of the high-speed rotation of the shaft into axial thrust, and utilizing the external rotation of the weight in conjunction with the guide ring, dynamic clamping force is provided to enhance the rigidity of tool clamping. Furthermore, the flow rate of the cutting fluid is adjusted through the guide component to adapt to different speed requirements.
It improves the machining accuracy of mold steel, reduces the wear of cutting tools and spindles, and reduces cutting fluid consumption, thus maintaining high-efficiency machining.
Smart Images
Figure CN121551680A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of milling machine technology, and in particular to an automated milling apparatus for mold steel. Background Technology
[0002] Die steel is a type of steel used to manufacture molds such as cold stamping dies, hot forging dies, and die casting molds. After the die steel is forged into a blank, it needs to be milled using a milling machine. Due to the material properties of die steel, such as high hardness, high strength, and high wear resistance, small-amplitude high-frequency vibrations are easily generated between the tool and the spindle during high-speed milling. This not only affects the machining accuracy but also accelerates the wear of the tool and the spindle.
[0003] To address the aforementioned problem of tool chatter, current common solutions include reducing the cutting speed or feed rate. However, this reduces machining efficiency. Alternatively, replacing the tool holder with a heat-shrink or hydraulic one can increase the clamping force. However, this clamping force is static; when the spindle rotates at high speed, it generates centrifugal force, which acts synchronously on the baffle. This causes the baffle to generate rotational force away from the axis, resulting in a decrease in the clamping force between it and the baffle at the tool end. Consequently, the connection rigidity of the tool weakens under high-speed cutting conditions. Therefore, this application provides an automated milling apparatus for mold steel to meet this requirement. Summary of the Invention
[0004] The purpose of this invention is to provide an automated milling device for mold steel to solve the above-mentioned problems. By converting the centrifugal force generated when the spindle rotates at high speed into an axial thrust acting on the broach, the dynamic clamping effect on the tool can be improved during the spindle rotation, and the clamping rigidity of the tool can be increased. This solves the problem mentioned in the background art, namely: the centrifugal force generated when the spindle rotates at high speed acts on the broach claw, causing the clamping force between it and the broach stud at the end of the tool to decrease, resulting in a weakening of the connection rigidity of the tool under high-speed cutting conditions.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An automated milling device for mold steel includes a machine body, a vertical slide, and an electric spindle fixed on the vertical slide. A shaft is rotatably connected to the electric spindle via bearings. A baffle rod is installed inside the shaft. An internal motor drives the shaft to rotate. A cutting tool is detachably connected to one end of the shaft. The baffle rod has a shaft hole and a top-opening mounting cavity. A flow guide is installed in the mounting cavity to regulate the flow rate of cutting fluid. A guide ring is fixedly connected to the outside of the baffle rod. A pushing mechanism is installed at the top of the shaft. The pushing mechanism includes a fixing cap fixed to the top of the shaft. Weights are rotatably connected at equal intervals inside the fixing cap. When the shaft rotates, the weights rotate under centrifugal force and push the guide ring upwards to increase the dynamic clamping force of the baffle rod on the cutting tool.
[0006] In the above technical solution: the centrifugal force of the high-speed rotation of the spindle drives multiple weights to rotate outward, and in cooperation with the guide ring, forms an axial thrust acting on the broach rod, which can provide additional dynamic clamping force for the tool during the spindle rotation, and increase the clamping rigidity of the tool.
[0007] Based on this: The fixed cap has a sliding rod equidistantly connected inside. The bottom end of the sliding rod passes through the fixed cap and is fixedly connected to a push plate. A return spring is sleeved on the outside of the sliding rod and between the push plate and the fixed cap. Under the pressure of the return spring and the push plate, the weight can be pressed against the inner wall of the fixed cap to prevent the weight from shaking and producing abnormal noise when the spindle rotates at low speed.
[0008] Furthermore: the guide component includes a sealing ring slidably disposed inside the mounting cavity, and connecting rods are fixedly connected at equal intervals on the inner wall of the sealing ring. Filter cartridges are fixedly connected to the ends of the multiple connecting rods. The bottom end of the filter cartridge is inserted into the shaft hole. Under normal conditions, the lower half of the filter cartridge is inserted into the shaft hole. At this time, the cutting fluid can only enter the shaft hole through the upper half of the filter cartridge. When the guide component moves upward, the lower half of the filter cartridge moves out from inside the shaft hole. At this time, the cutting fluid can enter the shaft hole through the entire filter cartridge, thereby increasing the supply of cutting fluid. Based on the above scheme, the outer side of the sealing ring is provided with equidistant insertion parts, and the inside of the drawbar is provided with equidistant sliding grooves, and the positions of the sliding grooves and the insertion parts correspond one-to-one. The sliding rod is internally threaded with a connecting shaft, one end of which passes through the sliding groove and extends into the insertion part. By connecting the connecting shaft and the insertion part, the guide and the connecting shaft can be integrated into one unit, so that the guide moves up and down with the connecting shaft, realizing the adaptive adjustment of the cutting fluid flow rate with the spindle speed.
[0009] Compared with the prior art, the present invention has at least the following beneficial effects: In the above-mentioned solution, the automated milling device for mold steel provided in this application can drive multiple weights to rotate outward through the centrifugal force of the high-speed rotation of the shaft, and cooperate with the guide ring to form an axial thrust acting on the broach rod, so that the broach rod further tightens the broach claw, which can provide additional dynamic clamping force during the rotation of the spindle, thereby increasing the clamping rigidity of the tool under high-speed rotation, improving the suppression of tool chatter during cutting, which can not only improve the machining accuracy of mold steel, but also reduce the wear of the tool and the spindle; Furthermore, by adjusting the height of the filter cartridge, the flow rate of the cutting fluid can be controlled. The rotating weight can drive the connecting shaft to move upward synchronously, which in turn causes the connecting shaft to move the guide component upward, moving the lower half of the filter cartridge out of the shaft hole. This can improve the flow rate of the cutting fluid through the filter cartridge. Based on this design, the cutting fluid flow rate can be adaptively adjusted according to the spindle speed, reducing the consumption of cutting fluid while ensuring cooling and lubrication. Attached Figure Description
[0010] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.
[0011] Figure 1 This is a schematic diagram of the overall structure of an automated milling machine for mold steel. Figure 2 This is a schematic diagram of the structure of the electric spindle of the present invention; Figure 3 This is a cross-sectional schematic diagram of the electric spindle of the present invention; Figure 4 This is a cross-sectional view of the connection between the shaft and the tie rod of the present invention; Figure 5 For the present invention Figure 3 A partial schematic diagram; Figure 6 This is a schematic diagram of the pushing mechanism of the present invention; Figure 7 This is a schematic diagram of the working state of the jacking mechanism of the present invention; Figure 8 This is a schematic diagram of the flow guide of the present invention; Figure 9 This is a schematic diagram showing the normal and working states of the pushing mechanism of the present invention.
[0012] Figure label: 1. Machine body; 2. Vertical slide table; 3. Electric spindle; 31. Built-in motor; 4. Shaft body; 41. Pushing elastic element; 5. Broach rod; 51. Shaft hole; 52. Flow guide; 521. Sealing ring; 522. Connecting rod; 523. Filter cartridge; 524. Insertion part; 53. Guide ring; 54. Slide groove; 55. Flow guide tube; 56. Pressure spring; 6. Cutting tool; 61. Spray hole; 7. Pushing mechanism; 71. Fixing cap; 72. Weight; 721. Magnetic suction element; 73. Slide rod; 74. Push plate; 75. Return spring; 76. Connecting shaft; 8. Top cover; 9. Cutting cylinder.
[0013] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation
[0014] The automated milling apparatus for mold steel provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.
[0015] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.
[0016] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.
[0017] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.
[0018] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.
[0019] like Figures 1 to 4 As shown, an embodiment of the present invention provides an automated milling device for mold steel, including a machine body 1, a vertical slide 2, and an electric spindle 3 fixed on the vertical slide 2. The machine body 1 is also equipped with a longitudinal moving platform and a transverse moving platform for placing the workpiece to be processed, facilitating workpiece position adjustment and ensuring machining position accuracy. A shaft 4 is rotatably connected inside the electric spindle 3 via bearings. A drawbar 5 is disposed inside the shaft 4. A guide ring 53, an inverted conical ring, is fixedly connected to the outside of the drawbar 5 by bolts. A shaft hole 51 is disposed inside the drawbar 5, penetrating the drawbar 5 for guiding the cutting fluid. The electric spindle... The spindle 4 is equipped with a built-in motor 31 that drives the spindle body 4 to rotate. One end of the spindle body 4 is detachably connected to a cutting tool 6. A guide tube 55 is slidably connected inside the spindle hole 51. A pressure spring 56 is provided inside the spindle hole 51 that contacts the top end of the guide tube 55. A spray hole 61 is opened inside the cutting tool 6. When the cutting tool 6 is installed, the bottom end of the guide tube 55 is inserted into the spray hole 61. The pressure spring 56 applies downward sliding pressure to the guide tube 55, so that one end of the guide tube 55 is inserted into the spray hole 61. With this design, the cutting fluid can be directly sprayed from the spray hole 61 to the cutting position of the workpiece, reducing the amount of cutting fluid entering the spindle core tapered hole, thereby reducing the pressure of cutting fluid entering the spindle body 4 and improving the sealing effect of the spindle. The shaft 4 is provided with a puller claw connected to the puller rod 5. A pusher elastic element 41 is sleeved inside the shaft 4 and outside the puller rod 5. The pusher elastic element 41 is used to drive the puller rod 5 to move upward, forcing the puller claw to deform and clamp the tool 6. The pusher elastic element 41 is a pusher spring or a spring sheet group. The pusher elastic element 41 can drive the puller rod 5 to move away from the tool 6, thereby driving the puller claw to retract and deform, so as to clamp and fix it to the puller pin, so as to ensure the stability of the tool 6 after installation. A top cover 8 is fixedly connected to the top of the electric spindle 3. A tool-removing cylinder 9 is fixedly connected to the top of the top cover 8. The telescopic end of the tool-removing cylinder 9 extends into the top cover 8 and is fixedly connected to a push rod component. Under normal conditions, the push rod component is separated from the top of the drawbar 5. The tool-removing cylinder 9 drives the push rod component to move down and squeeze the drawbar 5 and the push elastic element 41, so that the drawbar 5 moves downward. At this time, the drawer claw at the end of the drawbar 5 extends and resets, and separates from the pull stud at the end of the tool 6, which can achieve the effect of quick tool removal and facilitate tool replacement 6.
[0020] In this embodiment, as Figure 6 and Figure 7 As shown, a pushing mechanism 7 is provided at the top of the shaft 4. The pushing mechanism 7 includes a fixing cap 71 fixed at the top of the shaft 4. A weight 72 is rotatably connected at equal intervals inside the fixing cap 71. When the shaft 4 rotates, the weight 72 rotates under the action of centrifugal force and pushes the guide ring 53 upward to improve the dynamic clamping force of the broach rod 5 on the tool 6. The centrifugal force generated when the shaft 4 rotates at high speed overcomes the gravity of the weight 72 and the elastic force of the return spring 75, causing the weight 72 to be thrown outward and rotated, thereby causing it to rotate in the direction of the guide ring 53. Since the guide ring 53 is a conical structure, the contact surface between the weight 72 and the guide ring 53 is an inclined surface. At this time, the centrifugal force is converted into an axial thrust acting on the guide ring 53. Through this design, the centrifugal force when the spindle rotates can be converted into a pushing force, which increases the additional pulling force of the broach rod 5 on the broach claw, thereby enhancing the fixing effect on the tool 6, reducing the vibration of the tool 6, and improving the machining accuracy of the workpiece. Inside the fixing cap 71, slide rods 73 are equidistantly slidably connected. The bottom end of the slide rods 73 passes through the fixing cap 71 and is fixedly connected to a push plate 74. The weight 72 has a conical structure. The bottom end of the push plate 74 is provided with an arc portion, which abuts against the outer wall of the weight 72. A return spring 75 is sleeved on the outside of the slide rods 73 and between the push plate 74 and the fixing cap 71. By providing the arc portion, it can better fit with the conical surface of the weight 72, so that when the weight 72 swings outward and rotates, it can more smoothly push the push plate 74 upward. Under the action of the return spring 75, the push plate 74 can be driven to move downward and reset, while at the same time the weight 72 is driven to rotate downward. Under the pressure of the return spring 75, the weight 72 can be made to fit against the inner wall of the fixed cap 71, preventing the weight 72 from shaking and producing abnormal noise when the spindle rotates at low speed. The inside of the weight 72 has a groove with a top opening, and a magnetic suction component 721 is installed in the groove. After the weight 72 rotates, the magnetic suction component 721 is attracted to the outer wall of the guide ring 53. By setting the magnetic suction component 721, the weight 72 can be attracted to the outer wall of the guide ring 53, which can improve the stability between the weight 72 and the guide ring 53 and prevent vibration and knocking from producing abnormal noise. In addition, the elastic force of the return spring 75 is greater than the magnetic attraction between the magnetic suction component 721 and the guide ring 53, ensuring that the weight 72 and the guide ring 53 are completely separated when the spindle stops rotating.
[0021] In this embodiment, as Figures 7 to 9 As shown, the drawbar 5 has a top-opening mounting cavity. A rotary joint is installed inside the mounting cavity, and the cutting fluid pipe is connected to the mounting cavity through the rotary joint. A flow guide 52 is installed inside the mounting cavity to regulate the flow rate of the cutting fluid. The flow guide 52 includes a sealing ring 521 slidably disposed inside the mounting cavity. Connecting rods 522 are fixedly connected at equal intervals on the inner wall of the sealing ring 521. Filter cartridges 523 are fixedly connected to the ends of the multiple connecting rods 522. The bottom end of the filter cartridge 523 is inserted into the shaft hole 51. The top of the filter cartridge 523 is sealed, and multiple drainage holes are provided on the side wall. Insertion parts 524 are provided at equal intervals on the outer side of the sealing ring 521. Sliding grooves 54 are provided at equal intervals inside the pull rod 5, and the positions of the sliding grooves 54 and the insertion parts 524 correspond one-to-one. The sliding rod 73 is threadedly connected to the connecting shaft 76. One end of the connecting shaft 76 extends through the sliding groove 54 into the insertion part 524. The sliding groove 54 is a vertically arranged long groove that can allow the connecting shaft 76 to slide up and down, thereby driving the guide 52 to move inside the installation cavity. The connecting shaft 76 is inserted into the insertion part 524, which can connect the guide 52 to the push mechanism 7, so that the guide 52 moves synchronously with the slide bar 73. Under normal conditions, part of the filter cartridge 523 is inserted into the shaft hole 51, and the other part is placed in the mounting cavity. When the spindle rotates at low speed, the centrifugal force generated cannot overcome the gravity of the weight 72. At this time, the position of the filter cartridge 523 remains unchanged. The cutting fluid entering the mounting cavity enters the shaft hole 51 through the upper part of the filter cartridge 523. Since the tool 6 rotates at a relatively slow speed, the heat of friction between it and the workpiece is low. Therefore, a small flow rate of cutting fluid can meet the cooling and lubrication requirements. When the main shaft rotates at high speed, the resulting centrifugal force causes the weight 72 to swing outward and rotate. At this time, the weight 72 drives the slide rod 73 to slide upward. Under the action of the slide rod 73 and the connecting shaft 76, the sealing ring 521 and the filter cartridge 523 slide upward (the upward movement distance is...). Figure 9 (S) At this time, the filter cartridge 523 is completely moved into the mounting cavity, so the filter cartridge 523 can guide the cutting fluid at full speed to meet the cooling and lubrication requirements during high-speed rotation. Through this design, the flow rate of the cutting fluid can be automatically adjusted with the spindle rotation speed, which can not only ensure the cooling and lubrication requirements, but also reduce the amount of cutting fluid used.
[0022] Working principle of the invention: The cutter cylinder 9 drives the push rod component to squeeze the top of the cutter rod 5, causing it to move downward against the elastic force of the push elastic element 41. At this time, the cutter claw at the end of the cutter rod 5 loses its constraint, unfolds and resets outward, and then inserts the end of the cutter 6 into the tapered hole at the end of the shaft body 4. Then, the cutter cylinder 9 retracts, and the elastic force of the push elastic element 41 pushes the cutter rod 5 upward again. The cutter claw then retracts inward again and clamps the pull stud of the cutter 6, completing the installation of the cutter 6. At the same time, under the action of the pressure spring 56, the guide tube 55 in the shaft hole 51 is pushed and inserted into the spray hole 61 inside the cutter 6, so that the spray hole 61 is directly connected to the shaft hole 51. After the electric spindle 3 is started, the spindle body 4 and the drawbar 5 rotate synchronously. Under low-speed rotation machining, the centrifugal force generated by the rotation is small and insufficient to overcome the weight of the weight block 72 itself and the elastic force of the return spring 75. At this time, the weight block 72 remains in contact with the inner wall of the fixed cap 71 and does not rotate outward. Since the push mechanism 7 is not activated, the guide 52 remains in its initial position. A portion of the bottom of the filter cartridge 523 is still inserted in the shaft hole 51 of the drawbar 5. The cutting fluid can only enter the filter cartridge 523 through the drain hole in the upper part of the filter cartridge 523, and then be sprayed to the cutting point through the shaft hole 51, the guide pipe 55 and the spray hole 61. This reduces the amount of cutting fluid used while meeting the cooling and lubrication requirements of low-speed cutting. When the electric spindle 3 rotates at high speed, the centrifugal force increases. At this time, under the action of centrifugal force, the weight 72 overcomes its own weight and the elastic force of the return spring 75 and rotates outward. When the weight 72 rotates, it drives the push plate 74, the slide rod 73 and the connecting shaft 76 to move upward. When the slide rod 73 rotates and comes into contact with the side wall of the guide ring 53, the centrifugal force generated by the rotation is converted into an upward axial thrust. This axial thrust acts on the broach rod 5 through the guide ring 53, providing additional pulling force to the broach rod 5. At this time, the broach rod 5 locks the broach claws a second time, thereby enhancing the clamping force of the broach claws on the tool 6 pull studs in the rotating state, suppressing the chatter of the tool 6 during high-speed cutting, and improving the machining accuracy. Since the connecting shaft 76 is connected to the insertion part 524 on the guide member 52, as the slide rod 73 and the connecting shaft 76 slide upward, the guide member 52 moves upward inside the mounting cavity. At this time, the sealing ring 521 drives the filter cartridge 523 fixed at its center to move upward, completely pulling the filter cartridge 523 into the mounting cavity (e.g., Figure 9 As shown in the figure, at this time, the cutting fluid can enter the shaft hole 51 at the maximum flow rate through all the drain holes of the filter cartridge 523, and then be sprayed to the cutting point through the guide pipe 55 and the spray hole 61 to meet the cooling and lubrication requirements during high-speed cutting. After processing is completed, the electric spindle 3 stops rotating, and the weight 72 resets under its own weight and the elastic force of the return spring 75, detaches from the contact with the guide ring 53, and re-fits against the inner wall of the fixing cap 71. At the same time, the return spring 75 pushes the push plate 74 and the slide rod 73 to move downward, and the guide 52 returns to its initial position as the connecting shaft 76 moves downward, re-inserting the lower half of the filter cartridge 523 into the shaft hole 51.
[0023] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0024] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. An automated milling machine for mold steel, comprising a machine body (1), a vertical slide (2), and an electric spindle (3) fixed on the vertical slide (2), wherein a shaft body (4) is rotatably connected inside the electric spindle (3) via bearings, and a broach rod (5) is provided inside the shaft body (4), characterized in that, The electric spindle (3) is equipped with a built-in motor (31) that drives the shaft (4) to rotate. One end of the shaft (4) is detachably connected to a cutting tool (6). The pull rod (5) has a shaft hole (51) inside, and a mounting cavity with a top opening is opened inside the pull rod (5). A flow guide (52) is provided inside the mounting cavity. The flow guide (52) is used to adjust the flow rate of the cutting fluid. A guide ring (53) is fixedly connected to the outside of the pull rod (5). The top of the shaft (4) is provided with a pushing mechanism (7). The pushing mechanism (7) includes a fixing cap (71) fixed at the top of the shaft (4). A weight (72) is rotatably connected inside the fixing cap (71) at equal intervals. When the shaft (4) rotates, the weight (72) rotates under the action of centrifugal force and pushes the guide ring (53) upward to improve the dynamic clamping force of the pull rod (5) on the tool (6).
2. The automated milling apparatus for mold steel according to claim 1, characterized in that, Inside the fixed cap (71), there is a sliding rod (73) that is equidistantly slidably connected. The bottom end of the sliding rod (73) passes through the fixed cap (71) and is fixedly connected to a push plate (74). A return spring (75) is sleeved on the outside of the sliding rod (73) and between the push plate (74) and the fixed cap (71).
3. The automated milling apparatus for mold steel according to claim 2, characterized in that, The weight (72) has a conical structure, and the bottom end of the push plate (74) is provided with an arc portion, which abuts against the outer wall of the weight (72).
4. The automated milling apparatus for mold steel according to claim 3, characterized in that, The inside of the weight (72) is a groove with a top opening, and a magnetic suction component (721) is installed in the groove. After the weight (72) rotates, the magnetic suction component (721) is attracted to the outer wall of the guide component (52).
5. The automated milling apparatus for mold steel according to claim 2, characterized in that, The guide (52) includes a sealing ring (521) slidably disposed inside the mounting cavity. Connecting rods (522) are fixedly connected at equal intervals on the inner wall of the sealing ring (521). Filter cartridges (523) are fixedly connected to the ends of the multiple connecting rods (522). The bottom end of the filter cartridge (523) is inserted into the shaft hole (51).
6. The automated milling apparatus for mold steel according to claim 5, characterized in that, The sealing ring (521) has equidistant insertion parts (524) on its outer side, and the pull bar (5) has equidistant sliding grooves (54) inside, and the sliding grooves (54) correspond one-to-one with the insertion parts (524).
7. The automated milling apparatus for mold steel according to claim 6, characterized in that, The slide bar (73) is internally threaded with a connecting shaft (76), one end of which extends through the slide groove (54) into the insertion part (524).
8. The automated milling apparatus for mold steel according to claim 1, characterized in that, A guide tube (55) is slidably connected inside the shaft hole (51). A pressure spring (56) is provided inside the shaft hole (51) and contacts the top end of the guide tube (55). A spray hole (61) is opened inside the cutter (6). When the cutter (6) is installed, the bottom end of the guide tube (55) is inserted into the spray hole (61).
9. The automated milling apparatus for mold steel according to claim 1, characterized in that, The shaft (4) is provided with a puller claw connected to the puller rod (5). The shaft (4) is provided with a pusher elastic element (41) inside and outside the puller rod (5). The pusher elastic element (41) is used to drive the puller rod (5) to move upward, forcing the puller claw to deform and clamp the tool (6).
10. The automated milling apparatus for mold steel according to claim 1, characterized in that, The top of the electric spindle (3) is fixedly connected to a top cover (8), and the top of the top cover (8) is fixedly connected to a tool-removing cylinder (9). The telescopic end of the tool-removing cylinder (9) extends into the top cover (8) and is fixedly connected to a push rod component. Under normal conditions, the push rod component is separated from the top of the pull rod (5).