High-speed cutting equipment for machining steel casting

Abstract

The invention relates to the technical field of steel casting cutting, in particular to high-speed cutting equipment for machining steel castings, which comprises a rectangular cross beam frame, mounting seats are fixedly mounted at two ends of the cross beam frame, and an adjusting component is fixedly mounted on the front end face of the cross beam frame and can reciprocate along the length direction of the cross beam frame. The cutting assembly is fixedly installed on the front end face of the adjusting assembly, the adjusting assembly can drive the cutting assembly to conduct angle adjustment, and the cutting assembly conducts cutting machining on the steel casting through high-speed rotation. The cutting tool bit and the fixing piece can be independently replaced, the single-point maintenance cost is reduced, the limitation that a traditional tool needs to be integrally replaced when damaged is avoided, an annular cavity and a flow guide channel in the cutting rotary disc and spray holes and ventilation through holes in the fixing piece dissipate heat cooperatively, the temperature of a cutting area can be remarkably reduced, and the cutting efficiency is improved. The phenomenon of heat accumulation is avoided, the wear rate of the cutter is reduced, and the service life of the cutter is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of cutting of cast steel parts, and particularly to a high-speed cutting device for processing cast steel parts. Background Art

[0002] Cast steel parts refer to parts made of cast steel, which are similar in properties to cast iron but have better strength than cast iron. Almost all industrial sectors need to use cast steel parts, and they are particularly widely used in ships and vehicles, construction machinery, engineering machinery, power station equipment, mining machinery and metallurgical equipment, aviation and aerospace equipment, oil well and chemical equipment, etc.; as key components in fields such as heavy machinery, energy equipment, and shipbuilding, due to their high hardness, complex structure, and large size characteristics, after casting, redundant structures such as gates, risers, and flash need to be precisely cut off to meet assembly and functional requirements.

[0003] In the prior art, the publication number CN115647457A provides a high-speed cutting device for processing cast steel parts. Specifically, the fixed component can drive the steel pipe to move to adjust the length to be cut, and the cutting component is used for cutting. It can also be adjusted according to the up and down movement of the cutting component by the first cylinder to cut the length required, and the required cutting length can be cut out, which can save the time of manual feeding and improve work efficiency; the steel pipe can be grabbed and fixed by the gear claws, so that the cutting device can better cut the steel pipe. When the cutting is completed, the second cylinder drives the gear claws and the steel pipe into the cutting position. When the cut steel pipe is removed, the remaining steel pipe will continue to fall on the second sliding plate for the next cutting; when the gear claws drive the steel pipe into the cutting position, at this time, the first cylinder drives the first fixed box to move downward, and at the same time, the second motor drives the first power rod and the second fixed box to rotate. At this time, the third motor drives the second threaded rod to rotate, so that the first slider moves on the second threaded rod, and the cutting distance of the cutting tool can be adjusted according to the thickness of the steel pipe.

[0004] In the above patent, an integral tool is used for cutting processing. When high-speed cutting cast steel, due to the high hardness of the material and many internal inclusions, the cutting edge of the tool is prone to chipping or wear, resulting in frequent shutdowns for replacement. Moreover, the integral design of the tool requires the replacement of the entire tool when a single point is damaged, which is troublesome and costly for replacement and maintenance; at the same time, in the above prior art, heat will accumulate in the contact area between the tool and the workpiece during the cutting process. Due to the single cooling path of the traditional cooling method, it is difficult to effectively suppress the temperature rise in the cutting area, resulting in excessive thermal deformation of the workpiece and significant surface residual stress, and subsequent grinding or straightening processes need to be added, and the process chain is long. Summary of the Invention

[0005] In order to solve the problems existing in the background art, the present invention proposes a high-speed cutting device for processing cast steel parts.

[0006] A high-speed cutting device for processing steel castings provided by this application adopts the following technical solution:

[0007] A high-speed cutting device for processing steel castings includes a crossbeam frame, which has a rectangular structure, and mounting seats are fixedly installed at both ends of the crossbeam frame.

[0008] An adjusting component, which is fixedly installed on the front end face of the crossbeam frame, and the adjusting component can reciprocate along the length direction of the crossbeam frame.

[0009] A cutting component, which is fixedly installed on the front end face of the adjusting component, the adjusting component can drive the cutting component to adjust the angle, and the cutting component performs cutting processing on the steel casting through high-speed rotation.

[0010] The cutting component includes a fixed frame, a connecting frame, a driving motor and a cutting unit. A fixed frame is fixedly installed at the front end of the adjusting component, and a reinforcing rib is also installed between the fixed frame and the adjusting component. A connecting frame is fixedly installed at the front end of the fixed frame. The cross section of the connecting frame is of a U-shaped structure. A driving motor is installed on the upper end of the connecting frame through a motor seat. A cutting unit is installed inside the connecting frame through a bearing, and the upper end of the cutting unit is connected to the output shaft of the driving motor through a coupling.

[0011] Further, the cutting unit includes a cutting turntable, mounting grooves, fixing parts, cutting tool heads, an upper fixing ring, a lower fixing sleeve and a rotating shaft. The cutting turntable has an annular structure. Mounting grooves are evenly formed on the outer side of the cutting turntable along its circumferential direction. Fixing parts are fixedly installed in the mounting grooves through screws. Cutting tool heads are fixedly installed on the fixing parts. An upper fixing ring is installed at the upper end of the middle part of the cutting turntable through a bearing. A lower fixing sleeve is installed at the lower end of the middle part of the cutting turntable through a bearing. The upper fixing ring and the lower fixing sleeve are fixedly installed in the middle part of the connecting frame through screws. A rotating shaft is installed in the middle part of the cutting turntable through a key, and the upper end of the rotating shaft is connected to the output shaft of the driving motor through a coupling.

[0012] Further, the fixing part has a trapezoidal structure, an arc-shaped groove is arranged on the counterclockwise side surface of the end of the fixing part, and a cutting tool head is welded in the arc-shaped groove by high-frequency welding. The cutting tool head is made of cemented carbide.

[0013] Further, the inside of the fixing part is a hollow structure. An annular cavity is formed on the inner side of the inside of the cutting turntable, and diversion channels are evenly formed on the outer side of the inside of the cutting turntable. The annular cavity is connected to the inside of the fixing part through the diversion channels.

[0014] Further, air-permeable through holes are evenly formed on the surface of the cutting turntable, and the air-permeable through holes and the diversion channels are arranged in a staggered manner.

[0015] Further, reinforcing rods are evenly arranged inside the fixing part, and the fixing part and the reinforcing rods are made of heat-conducting materials.

[0016] Further, spray holes are evenly formed on the clockwise side surface of the end portion of the fixing member, and the cooling gas inside the annular cavity enters the inside of the fixing member through the diversion channel and then sprays out from the inside of the spray holes.

[0017] Further, the lower fixing sleeve has a U-shaped cross-section. The inside of the lower fixing sleeve is hermetically connected to the lower end of the rotating shaft through a bearing. An air inlet pipe is installed in the middle of the lower end of the lower fixing sleeve, and an air inlet channel for communicating the air inlet pipe with the annular cavity is arranged inside the rotating shaft.

[0018] Further, an arc-shaped groove concentric with the cutting turntable is arranged on the inner side surface of the connecting frame, and cleaning brush bristles are uniformly arranged on the concave surface of the arc-shaped groove. The cleaning brush bristles are made of elastic steel wire.

[0019] Further, the adjusting assembly includes a linear slide rail, a limiting rod, a sliding frame and an electric turntable. A rectangular groove is formed in the middle of the cross beam frame. The linear slide rail is fixedly installed in the middle of the rectangular groove. The limiting rods are fixedly installed on the upper and lower sides of the rectangular groove. The sliding frame is slidably arranged at the front end of the cross beam frame. The inner side surface of the sliding frame is slidably connected to the limiting rods respectively. The linear slide rail can drive the sliding frame to reciprocate along the length direction of the cross beam frame. A circular through hole is formed in the middle of the front end of the sliding frame, and the electric turntable is fixedly installed in the circular through hole. The cutting assembly is installed on the front end surface of the electric turntable.

[0020] Compared with the prior art, the present invention provides a high-speed cutting device for processing steel castings, and has the following beneficial effects:

[0021] 1. In this invention, the linear slide rail and the electric turntable are used in combination to realize stepless angle adjustment of 0-180° and linkage of horizontal feeding, improve the processing efficiency for steel castings with complex structures (such as crankshafts and turbine housings), reduce the number of clamping times, and improve the production efficiency.

[0022] 2. In this invention, the cutting tool head and the fixing member can be independently replaced, reducing the single-point maintenance cost and avoiding the limitation that the traditional tool needs to be replaced as a whole when damaged.

[0023] 3. In this invention, the annular cavity, the diversion channel inside the cutting turntable, and the spray holes and air permeable through holes on the fixing member cooperate to dissipate heat, the temperature in the cutting area can be significantly reduced, the phenomenon of heat accumulation is avoided, and the tool wear rate is reduced, prolonging the service life of the tool.

[0024] 4. In this invention, the air permeable through holes evenly formed on the cutting turntable can optimize the moment of inertia, reduce the vibration amplitude, and combined with the rapid cooling of the cooling gas, the cutting tool head can effectively reduce the thermal deformation of the workpiece during the cutting process, and the size accuracy after cutting is high and the surface roughness is low, eliminating the grinding process. Description of the Drawings

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present application.

[0027] Figure 2 It is a three-dimensional sectional structural schematic diagram of the present application.

[0028] Figure 3 It is a three-dimensional structural schematic diagram between the sliding frame, the electric turntable and the cutting assembly of the present application.

[0029] Figure 4 It is a three-dimensional structural schematic diagram between the connecting frame, the driving motor and the cutting unit of the present application.

[0030] Figure 5 It is a three-dimensional sectional structural schematic diagram between the connecting frame and the cutting unit of the present application.

[0031] Figure 6 It is a three-dimensional structural schematic diagram of the cutting unit of the present application.

[0032] Figure 7 It is a three-dimensional sectional structural schematic diagram of the cutting unit of the present application.

[0033] Figure 8 It is the first three-dimensional structural schematic diagram between the fixing member and the cutting tool head of the present application.

[0034] Figure 9 It is the second three-dimensional structural schematic diagram between the fixing member and the cutting tool head of the present application.

[0035] Figure 10 It is a three-dimensional sectional structural schematic diagram between the fixing member and the cutting tool head of the present application.

[0036] Explanation of reference numerals: 1. Cross beam frame; 11. Mounting seat; 2. Adjusting assembly; 21. Linear slide rail; 22. Limiting rod; 23. Sliding frame; 24. Electric turntable; 3. Cutting assembly; 31. Fixed frame; 32. Connecting frame; 321. Cleaning brush; 33. Driving motor; 34. Cutting unit; 341. Cutting turntable; 3411. Annular cavity; 3412. Diversion channel; 3413. Ventilation through hole; 3414. Reinforcing rod; 3415. Spray hole; 342. Mounting groove; 343. Fixing member; 344. Cutting tool head; 345. Upper fixing ring; 346. Lower fixing sleeve; 347. Rotating shaft. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0038] Please refer to Figures 1-10 , a high-speed cutting device for processing steel castings provided in an embodiment of the present invention includes a crossbeam frame 1, which has a rectangular structure. Mounting seats 11 are fixedly installed at both ends of the crossbeam frame 1. An adjusting assembly 2 is fixedly installed on the front end face of the crossbeam frame 1. The adjusting assembly 2 can reciprocate along the length direction of the crossbeam frame 1. A cutting assembly 3 is fixedly installed on the front end face of the adjusting assembly 2. The adjusting assembly 2 can drive the cutting assembly 3 to perform angle adjustment. The cutting assembly 3 performs cutting processing on the steel casting by high-speed rotation.

[0039] In the above technical solution, during casting, the molten metal enters the cavity through the gate (runner), and the riser is used for feeding to prevent shrinkage cavities. The gate and riser need to be removed after the steel casting cools. The adjusting assembly 2 can drive the cutting assembly 3 to perform reciprocating movement in the length direction and angle adjustment. The cutting assembly 3 can perform cutting processing on the steel casting by high-speed cutting to remove the redundant parts, which is beneficial to the subsequent use of the steel casting.

[0040] Refer to Figures 3-6 As shown, the cutting assembly 3 includes a fixed frame 31, a connecting frame 32, a driving motor 33, and a cutting unit 34. The fixed frame 31 is fixedly installed at the front end of the adjusting assembly 2. A reinforcing rib is also installed between the fixed frame 31 and the adjusting assembly 2. The connecting frame 32 is fixedly installed at the front end of the fixed frame 31. The cross section of the connecting frame 32 is in a U-shaped structure. The driving motor 33 is installed on the connecting frame 32 through a motor seat. The cutting unit 34 is installed in the connecting frame 32 through a bearing. The upper end of the cutting unit 34 is connected to the output shaft of the driving motor 33 through a coupling.

[0041] In the above technical solution, the reinforcing rib can play a role in supporting the fixed frame 31, improving the stability of the fixed frame 31 and the connecting frame 32 during high-speed operation, and ensuring that the cutting unit 34 does not shake during high-speed cutting. The driving motor 33 is used to drive the cutting unit 34 to rotate at a high speed, so that the cutting unit 34 can accurately cut off the redundant parts on the surface of the steel casting.

[0042] By means of high-speed cutting of the cutting unit 34, the cutting time can be shortened, the heat transfer to the workpiece can be reduced, the thermal deformation of the workpiece can be controlled within 5 μm, meeting the geometric tolerance requirements of precision cast steel parts. At the same time, high-speed cutting forms thinner chips through high rotational speed and small feed, reducing the residual stress and micro-cracks on the surface layer of the steel casting, with low surface roughness, eliminating the subsequent grinding process.

[0043] Refer to Figures 3-6 As shown, as a preferred technical solution of this embodiment, the cutting unit 34 includes a cutting turntable 341, an installation groove 342, a fixing member 343, a cutting tool head 344, an upper fixing ring 345, a lower fixing sleeve 346, and a rotating shaft 347. The cutting turntable 341 has an annular structure. Installation grooves 342 are evenly formed on the outer side of the cutting turntable 341 along its circumference. Fixing members 343 are fixedly installed in the installation grooves 342 by screws. Cutting tool heads 344 are fixedly installed on the fixing members 343. An upper fixing ring 345 is installed at the upper end of the middle part of the cutting turntable 341 through a bearing, and a lower fixing sleeve 346 is installed at the lower end of the middle part of the cutting turntable 341 through a bearing. The upper fixing ring 345 and the lower fixing sleeve 346 are fixedly installed in the middle part of the connecting frame 32 by screws. A rotating shaft 347 is installed in the middle part of the cutting turntable 341 through a key. The upper end of the rotating shaft 347 is connected to the output shaft of the driving motor 33 through a coupling.

[0044] As a preferred technical solution of this embodiment, the cutting turntable 341 is installed in the middle part of the connecting frame 32 through the upper fixing ring 345 and the lower fixing sleeve 346. When the driving motor 33 works, the driving motor 33 drives the cutting turntable 341 to rotate synchronously at a high speed through the rotating shaft 347. The cutting tool heads 344 on the outer side of the cutting turntable 341 can realize the function of cutting the cast steel part, which is beneficial to the accurate forming of the cast steel part after casting.

[0045] It should be noted that the cutting turntable 341, the fixing member 343, and the cutting tool head 344 adopt a split design. When the cutting turntable 341 has a tooth break, there is no need to replace the entire cutting turntable 341. Only the damaged fixing member 343 on the cutting turntable 341 needs to be disassembled, which can not only facilitate the rapid repair of the cutting turntable 341 but also reduce costs and waste.

[0046] Refer to Figures 6-9 As shown, as a preferred technical solution of this embodiment, the fixing member 343 has a trapezoidal structure. An arc-shaped groove is provided on the counterclockwise side of the end of the fixing member 343. A cutting tool head 344 is welded in the arc-shaped groove by means of high-frequency welding. The cutting tool head 344 is made of cemented carbide.

[0047] In the above technical solution, the cutting tool head 344 is fixedly welded inside the arc-shaped groove at the end of the fixing member 343. The fixing member 343 can effectively support the cutting tool head 344, improve the strength of the cutting tool head 344, and avoid the phenomenon that the cutting tool head 344 is damaged during high-speed rotation.

[0048] Refer to Figure 7 As shown, as the preferred technical solution of this embodiment, the inside of the fixing member 343 is a hollow structure. An annular cavity 3411 is provided inside the inner side of the cutting turntable 341, and diversion channels 3412 are evenly provided on the outer side of the cutting turntable 341. The annular cavity is connected to the inside of the fixing member 343 through the diversion channels 3412.

[0049] In the above technical solution, when the cutting turntable 341 rotates at high speed to cut the cast steel part, cooling gas is introduced into the annular cavity 3411. The cooling gas can enter the diversion channels 3412 through the annular cavity 3411, and then cool the fixing member 343 and the cutting tool head 344 through the diversion channels 3412, avoiding heat accumulation generated by high-speed cutting, reducing damage to the cutting turntable 341 and the cutting tool head 344, and at the same time avoiding the heat generated by cutting from being transferred to the steel casting, reducing the thermal deformation generated during cutting, and meeting the geometric tolerance requirements required for the processing of precision cast steel parts.

[0050] Refer to Figures 6-7 As shown, as the preferred technical solution of this embodiment, ventilation through holes 3413 are evenly provided on the surface of the cutting turntable 341, and the ventilation through holes 3413 are arranged in a staggered manner with the diversion channels 3412.

[0051] In the above technical solution, the ventilation through holes 3413 can further cool the cutting turntable 341, avoid heat accumulation of the cutting turntable 341 during high-speed cutting, and at the same time, the moment of inertia of the cutting turntable 341 can be adjusted through the hole position distribution of the ventilation through holes 3413, moving the dangerous resonance frequency out of the working frequency band (such as avoiding the high-frequency range of 300 - 500 Hz), thereby ensuring the stability of the cutting turntable 341 during high-speed cutting and improving the surface quality of the steel casting after cutting.

[0052] Refer to Figure 10 As shown, as the preferred technical solution of this embodiment, reinforcing rods 3414 are evenly arranged inside the fixing member 343, and the fixing member 343 and the reinforcing rods 3414 are made of heat-conducting materials.

[0053] In the above technical solution, since the inside of the fixing member 343 is hollow, in order to ensure the strength of the fixing member 343 during high-speed cutting, reinforcing bars 3414 are evenly arranged inside the hollow structure of the fixing member 343. The reinforcing bars 3414 can effectively increase the stiffness and strength of the fixing member 343, and avoid the phenomenon of deformation of the fixing member 343 during subsequent work. At the same time, the fixing member 343 and the reinforcing bars 3414 are made of heat-conducting materials. When the heat generated by the high-speed cutting of the cutting tool head 344 can be quickly transferred to the inside of the fixing member 343, which is conducive to the rapid dissipation of heat.

[0054] Refer to Figure 9 As shown, as a preferred technical solution of this embodiment, spray holes 3415 are evenly opened on the clockwise side surface of the end of the fixing member 343. The cooling gas inside the annular cavity 3411 enters the inside of the fixing member 343 through the diversion channel 3412 and then sprays out from the spray holes 3415.

[0055] In the above technical solution, when the cooling gas inside the annular cavity 3411 enters the inside of the fixing member 343, since the fixing member 343 and the reinforcing bars 3414 are made of heat-conducting materials, the cooling gas can quickly exchange heat with the fixing member 343 and the reinforcing bars 3414. At the same time, the cooling gas can drive the heat to spray out from the spray holes 3415, so that the heat generated by cutting can be quickly taken away, thus avoiding the phenomenon of heat accumulation and improving the service life of the cutting turntable 341 and the cutting tool head 344.

[0056] It should be noted that the spray holes 3415 opened at the end of the fixing member 343 correspond to the surface of the cutting tool head 344. That is, the spray holes 3415 can not only take out the heat inside the fixing member 343 through the cooling gas, but also spray the cooling gas on the outer surface of the cutting tool head 344, and the cooling gas forms a gas film protection layer on the surface of the cutting tool head 344.

[0057] Refer to Figure 7 As shown, as a preferred technical solution of this embodiment, the lower fixing sleeve 346 has a U-shaped cross-section. The inside of the lower fixing sleeve 346 is hermetically connected to the lower end of the rotating shaft 347 through a bearing. An air inlet pipe is installed in the middle of the lower end of the lower fixing sleeve 346, and an air inlet channel for communicating the air inlet pipe with the annular cavity 3411 is provided inside the rotating shaft 347.

[0058] In the above technical solution, in order to facilitate the injection of the cooling gas into the annular cavity 3411, an air inlet pipe is installed at the bottom of the lower fixing sleeve 346. The air inlet pipe is communicated with a high-pressure air pump. The high-pressure cooling gas enters the annular cavity 3411 through the air inlet pipe and the air inlet channel, so that continuous air supply can be realized when the cutting turntable 341 and the cutting tool head 344 rotate at high speed, and the purpose of cooling and temperature reduction of the cutting turntable 341 and the cutting tool head 344 can be achieved.

[0059] Refer to Figure 5 As shown, as a preferred technical solution of this embodiment, an arc-shaped groove concentric with the cutting turntable 341 is provided on the inner side surface of the connection frame 32. Cleaning bristles 321 are uniformly arranged on the concave surface of the arc-shaped groove. The cleaning bristles 321 are made of elastic steel wire material.

[0060] In the above technical solution, when the cutting turntable 341 performs cutting on the cast steel part during high-speed rotation, in order to prevent the chips generated during cutting from accumulating on the cutting turntable 341 and the cutting tool head 344, cleaning bristles are uniformly arranged on the inner side surface of the connection frame 32, and the cleaning bristles can accurately clean the surfaces of the cutting turntable 341 and the cutting tool head 344.

[0061] Refer to Figures 1-2 As shown, as a preferred technical solution of this embodiment, the adjusting assembly 2 includes a linear slide rail 21, a limiting rod 22, a sliding frame 23 and an electric turntable 24. A rectangular groove is provided in the middle of the cross beam frame 1. The linear slide rail 21 is fixedly installed in the middle of the rectangular groove. The limiting rods 22 are fixedly installed on both the upper and lower sides of the rectangular groove. A sliding frame 23 is slidably arranged at the front end of the cross beam frame 1. The inner side surfaces of the sliding frame 23 are respectively slidably connected with the limiting rods 22. The linear slide rail 21 can drive the sliding frame 23 to reciprocate along the length direction of the cross beam frame 1. A circular through groove is provided in the middle of the front end of the sliding frame 23, and the electric turntable 24 is fixedly installed in the circular through groove. The cutting assembly 3 is installed on the front end surface of the electric turntable 24.

[0062] In the above technical solution, the linear slide rail 21 can perform horizontal reciprocating movement on the sliding frame 23, and the electric turntable 24 can drive the cutting assembly 3 to rotate at an angle. The cutting assembly 3 can be arbitrarily flipped within the range of 0-180°, so that the cutting assembly 3 can cut different positions on the cast steel part, avoiding the limitation that traditional cutting equipment can only cut horizontally or vertically, and improving the convenience of use.

[0063] Combined with the above structure, when a high-speed cutting device for processing cast steel parts provided by the present invention is working, it is implemented according to the following steps:

[0064] S1: Equipment positioning and initial adjustment:

[0065] Workpiece positioning: Fix the cast steel part to be processed on the workbench to ensure that the parts to be cut such as the gate and riser are within the cutting path range.

[0066] Coordinate calibration: Drive the sliding frame 23 to move along the length direction of the cross beam frame 1 through the linear slide rail 21 of the adjusting assembly 2, and accurately position the initial position of the cutting assembly 3 in combination with the limiting rod 22.

[0067] Angle pre-adjustment: Start the electric turntable 24 to drive the cutting assembly 3 to rotate within the range of 0 - 180°, and adjust the cutting angle of the cutting tool head 344 with the steel casting according to the processing requirements (such as vertical cutting or inclined cutting).

[0068] Technical effect: Through multi-degree-of-freedom adjustment, it adapts to the spatial morphology of complex steel castings and avoids the limitations of single-direction cutting of traditional equipment.

[0069] S2: Cooling system startup and cutting unit pre-operation:

[0070] Cooling air path activation: Turn on the high-pressure air pump, and the cooling gas enters the intake channel inside the rotating shaft 347 through the intake pipe of the lower fixed sleeve 346 and is transported to the inside of the annular cavity 3411 of the cutting turntable 341.

[0071] Airflow distribution: The cooling gas is split from the annular cavity 3411 through the diversion channel 3412 into the inside of each fixing member 343 and is evenly sprayed onto the surface of the cutting tool head 344 through the spray holes 3415 to form an air film protection layer.

[0072] Drive preheating: Start the drive motor 33, and the drive motor 33 drives the cutting turntable 341 to rotate idly through the rotating shaft 347 to preheat the bearing and detect the dynamic balance state.

[0073] Technical effect: Pre-cooling avoids thermal shock, air film lubrication reduces initial cutting friction, and dynamic balance detection ensures high-speed stability.

[0074] S3: High-speed cutting and thermal-mechanical co-control:

[0075] Cutting parameter loading: Set parameters such as cutting speed and feed rate according to the material of the steel casting.

[0076] Dynamic feed: The linear slide rail 21 drives the cutting assembly 3 to move uniformly along the crossbeam frame 1, and at the same time, the electric turntable 24 fine-tunes the cutting angle in real time to maintain the optimal contact trajectory between the tool head 344 and the workpiece.

[0077] Active heat dissipation: The cooling gas continuously flows through the inside of the fixing member 343, quickly conducts the cutting heat away from the tool head 344, and enhances convective heat dissipation through the air-permeable through holes 3413.

[0078] Thermal deformation suppression: Through the active cooling of the cooling gas, the temperature of the cutting area is controlled below 600°C, the thermal deformation of the workpiece is small, and the IT7-level tolerance requirements are met.

[0079] Technical effect: The combination of high rotational speed and small cutting depth forms thin chips, with low surface roughness and no need for secondary finishing.

[0080] S4: Chip cleaning and real-time monitoring:

[0081] Chip removal: When the cutting turntable 341 rotates at high speed, the elastic wire cleaning brushes inside the connecting frame 32 continuously scrape the cutting tool head 344 and the turntable surface to prevent chips from adhering.

[0082] Vibration monitoring: The rotational inertia is optimized through the ventilation through-holes 3413 of the cutting turntable 341 to avoid the resonance frequency band of 300 - 500 Hz.

[0083] Technical effects: Dynamic cleaning ensures cutting continuity, and adaptive control improves machining safety and tool life.

[0084] S5: Machining completion and system reset:

[0085] Cutting termination: The linear slide rail 21 drives the cutting assembly 3 to return to the initial position, the drive motor 33 stops running, and the cooling air path is closed with a time delay to complete the dissipation of residual heat.

[0086] Tool head maintenance: If it is detected that the fixing part 343 or the cutting tool head 344 is damaged, the screw can be quickly disassembled to replace a single module, and there is no need to replace the cutting turntable 341 as a whole.

[0087] Data archiving: Record cutting parameters (speed, torque, temperature rise) and workpiece quality data (surface roughness, dimensional error) to provide input for the digital twin model for process optimization.

[0088] Technical effects: Modular maintenance reduces downtime, and the closed-loop process data drives continuous improvement of machining accuracy.

[0089] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A high-speed cutting device for processing cast steel parts, characterized in that, Including: A crossbeam frame (1), which has a rectangular structure, and mounting seats (11) are fixedly installed at both ends of the crossbeam frame (1); An adjusting component (2), which is fixedly installed on the front end face of the crossbeam frame (1), and the adjusting component (2) can reciprocate along the length direction of the crossbeam frame (1); A cutting component (3), which is fixedly installed on the front end face of the adjusting component (2), the adjusting component (2) can drive the cutting component (3) to perform angle adjustment, and the cutting component (3) performs cutting processing on the cast steel part by high-speed rotation; The cutting component (3) includes a fixing frame (31), a connecting frame (32), a driving motor (33) and a cutting unit (34). A fixing frame (31) is fixedly installed at the front end of the adjusting component (2). A reinforcing rib is also installed between the fixing frame (31) and the adjusting component (2). A connecting frame (32) is fixedly installed at the front end of the fixing frame (31). The cross section of the connecting frame (32) is in a U-shaped structure. A driving motor (33) is installed on the upper end of the connecting frame (32) through a motor seat. A cutting unit (34) is installed inside the connecting frame (32) through a bearing. The upper end of the cutting unit (34) is connected to the output shaft of the driving motor (33) through a coupling.

2. The high-speed cutting equipment for processing steel castings according to claim 1, characterized in that: The cutting unit (34) includes a cutting turntable (341), mounting grooves (342), fixing parts (343), cutting tool heads (344), an upper fixing ring (345), a lower fixing sleeve (346) and a rotating shaft (347). The cutting turntable (341) has an annular structure. Mounting grooves (342) are evenly formed on the outer side of the cutting turntable (341) along its circumference. Fixing parts (343) are fixedly installed in the mounting grooves (342) by screws. Cutting tool heads (344) are fixedly installed on the fixing parts (343). An upper fixing ring (345) is installed at the upper middle part of the cutting turntable (341) through a bearing. A lower fixing sleeve (346) is installed at the lower middle part of the cutting turntable (341) through a bearing. The upper fixing ring (345) and the lower fixing sleeve (346) are fixedly installed in the middle part of the connecting frame (32) by screws. A rotating shaft (347) is installed in the middle part of the cutting turntable (341) through a flat key. The upper end of the rotating shaft (347) is connected to the output shaft of the driving motor (33) through a coupling.

3. The high-speed cutting device for machining cast steel parts according to claim 2, wherein: The fixing part (343) has a trapezoidal structure. An arc-shaped groove is arranged on the counterclockwise side surface at the end of the fixing part (343). A cutting tool head (344) is welded in the arc-shaped groove by high-frequency welding. The cutting tool head (344) is made of cemented carbide.

4. A high-speed cutting device for processing steel castings according to claim 3, characterized in that: The inside of the fixing part (343) is a hollow structure. An annular cavity (3411) is formed on the inner side of the inside of the cutting turntable (341). Flow guiding channels (3412) are evenly formed on the outer side of the inside of the cutting turntable (341). The annular cavity is connected to the inside of the fixing part (343) through the flow guiding channels.

5. The high-speed cutting equipment for machining steel castings according to claim 4, characterized in that: Ventilation through holes (3413) are evenly formed on the surface of the cutting turntable (341). The ventilation through holes (3413) and the flow guiding channels (3412) are arranged in a staggered manner.

6. The high-speed cutting equipment for processing steel castings according to claim 5, characterized in that: Reinforcing rods (3414) are evenly arranged inside the fixing member (343), and the fixing member (343) and the reinforcing rods (3414) are made of heat-conducting materials.

7. A high-speed cutting device for processing steel castings according to claim 6, characterized in that: Spray holes (3415) are evenly formed on the clockwise side surface at the end of the fixing member (343). After the cooling gas inside the annular cavity (3411) enters the inside of the fixing member (343) through the diversion channel (3412), it is then ejected from the inside of the spray holes (3415).

8. The high-speed cutting equipment for machining steel castings according to claim 7, characterized in that: The lower fixing sleeve (346) has a U-shaped cross-section. The lower end of the fixing sleeve (346) is hermetically connected to the lower end of the rotating shaft (347) through a bearing. An air inlet pipe is installed in the middle of the lower end of the lower fixing sleeve (346), and an air inlet channel for communicating the air inlet pipe with the annular cavity (3411) is provided inside the rotating shaft (347).

9. The high-speed cutting equipment for processing steel castings according to claim 8, characterized in that: An arc-shaped groove concentric with the cutting turntable (341) is provided on the inner side surface of the connecting frame (32). Cleaning bristles (321) are evenly arranged on the concave surface of the arc-shaped groove, and the cleaning bristles (321) are made of elastic steel wire.

10. A high-speed cutting device for processing steel castings according to claim 1, characterized in that: The adjusting assembly (2) includes a linear slide rail (21), a limiting rod (22), a sliding frame (23) and an electric turntable (24). A rectangular groove is formed in the middle of the cross beam frame (1). The linear slide rail (21) is fixedly installed in the middle of the rectangular groove, and the limiting rods (22) are fixedly installed on the upper and lower sides of the rectangular groove. The sliding frame (23) is slidably arranged at the front end of the cross beam frame (1). The inner side surface of the sliding frame (23) is slidably connected to the limiting rods (22) respectively. The linear slide rail (21) can drive the sliding frame (23) to reciprocate along the length direction of the cross beam frame (1). A circular through groove is provided in the middle of the front end of the sliding frame (23), and the electric turntable (24) is fixedly installed in the circular through groove. The cutting assembly (3) is installed on the front end surface of the electric turntable (24).

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