A milling device for processing automobile parts

Abstract

The application provides a milling device for automobile accessory machining and belongs to the technical field of milling machining. The device comprises a milling machine main body, a milling head mechanism bottom fixed with a mounting seat at the front end of the milling machine main body, a milling cutter rotatably connected to the bottom of the mounting seat, a nozzle arranged on the side wall of the mounting seat, a collecting groove fixed below the front end of the milling machine main body, a workbench rotatably connected to the inner wall of the collecting groove through a motor, a plurality of supports slidingly connected to the front side of the top surface of the workbench through guide rails, an installation block connected to each support through an air cylinder, a limiting block one slidingly connected to the rear end installation groove of the installation block, a resisting block one fixed to the front end of the limiting block one, and a limiting block two slidingly connected to the outer wall of the installation block. The limiting block one, the resisting block one, the resisting block three and the limiting block two are arranged to adaptively switch the effects of flexible clamping and rigid support according to the milling intensity. The pressure sensor, the second electromagnet, the third electromagnet and the adjusting assembly are arranged to adjust the nozzle swing amplitude according to the real-time milling intensity.

Description

Technical Field

[0001] This invention relates to the field of milling technology, and in particular to a milling apparatus for processing automotive parts. Background Technology

[0002] In automotive parts manufacturing, crash beams are core components of a vehicle's passive safety system, typically made of high-strength metal materials of various types. To ensure precise assembly with the vehicle body and other components, and to meet the design requirements of lightweight and energy-absorbing structures, crash beams require milling after forming to create specific mounting surfaces and weight-reducing holes. The precision of this milling directly affects the vehicle's safety performance and assembly quality.

[0003] However, existing milling equipment still has some shortcomings in use. For example, in the clamping process, fixed rigid fixtures are prone to leaving indentations on the surface of the anti-collision beam, while flexible fixtures are difficult to provide sufficient support rigidity when the milling force increases, which makes the workpiece prone to vibration or deformation. In the cooling process, traditional coolant is sprayed at a fixed position through nozzles, which is inconvenient to adjust the spray coverage and oscillation frequency according to the real-time changes in the milling force, as well as to take into account the concentrated cooling of the heavy cutting area and the uniform cleaning of the entire machined surface.

[0004] Therefore, this application provides a milling apparatus for processing automotive parts to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a milling device for processing automotive parts, so as to solve the problem that existing milling devices are inconvenient to take into account both flexible clamping and rigid support, as well as the problem of adjusting the spray coverage and oscillation frequency according to the real-time changes of milling force.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A milling device for processing automotive parts includes: a milling machine body; a mounting base fixed to the bottom of a milling head mechanism at the front end of the milling machine body; a milling cutter rotatably connected to the bottom of the mounting base; a nozzle provided on the side wall of the mounting base; a collection groove fixed below the front end of the milling machine body; a worktable rotatably connected to the inner wall of the collection groove via a motor; multiple limiting plates fixed to the rear side of the top surface of the worktable; and multiple brackets slidably connected to the front side of the top surface of the worktable via guide rails. Each bracket is connected to a mounting block via a cylinder, and the rear end of the mounting block is slidably connected within a mounting groove. The mounting block includes a limiting block 1, with a stop block 1 fixed at its front end. A limiting block 2 is slidably connected to the outer wall of the mounting block. Multiple stop blocks 2 are fixed at the front end of the limiting block 2. A stop block 3 is provided between each stop block 2 and the stop block 1. Each stop block 3 is slidably connected to the side wall opening of the mounting block by a spring. A pressure sensor is fixed in the mounting groove at the rear end of the mounting block. The pressure sensor abuts against the stop block 1 by a spring. A positioning component is provided between the limiting block 2 and the mounting block. An adjustment component is provided between the nozzle and the milling head at the front end of the milling machine body.

[0008] Optionally, the first abutment is a frustum-shaped structure, the second abutment is a wedge-shaped structure, and the upper and lower ends of the third abutment correspond to the inclined surfaces of the first and second abutments, respectively.

[0009] Optionally, a third gear is rotatably connected to the side wall of the support via a motor, and a rack is fixed to the front side of the worktable, with the third gear meshing with the rack for transmission.

[0010] Optionally, the positioning component includes multiple connecting rods fixedly connected to the front end of the limiting block two. Each connecting rod has a locking block slidably connected to its front end via a spring. A first electromagnet is fixedly connected through the side wall of each connecting rod at the position corresponding to the locking block.

[0011] Optionally, the positioning component further includes multiple elastic telescopic rods and multiple sets of locking teeth fixed to the side wall of the mounting block. The movable ends of the multiple elastic telescopic rods are fixedly connected to the limiting block two, and the multiple sets of locking teeth are correspondingly arranged at the positions of the multiple locking blocks.

[0012] Optionally, the adjustment assembly includes a rotating shaft rotatably connected to the bottom of the milling head at the front end of the milling machine body. A first gear is fixed to the bottom end of the rotating shaft, and a second gear is fixed to the outside of the milling cutter holder. The first gear and the second gear mesh and drive each other. A threaded block is connected to the side wall of the rotating shaft through a bidirectional helical groove. A guide rod is slidably connected through one side of the threaded block. The guide rod is fixedly connected to the bottom surface of the milling head at the front end of the milling machine body. A stop rod is fixed to the side of the threaded block near the milling cutter.

[0013] Optionally, the adjustment assembly further includes an adjustment frame that is rotatably connected to the outside of the mounting base, the nozzle is fixed to the outside of the adjustment frame, and a turntable is rotatably connected to the outside of the adjustment frame at a position corresponding to the push rod. The turntable has an inclined groove, and the push rod abuts against and slides with the inclined groove.

[0014] Optionally, the side wall of the adjustment frame is symmetrically fixed with respect to the turntable with two arc-shaped blocks, and a second electromagnet is fixed to the lower side wall of each arc-shaped block. A third electromagnet is symmetrically fixed to the side wall of the turntable, and the polarity of the opposite side of the second electromagnet and the third electromagnet is the same.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above scheme, by setting limit block one, stop block one, stop block three, and limit block two, the effect of adaptively switching between flexible clamping and rigid support according to the milling force is achieved. When the initial milling or the milling force is small, the rubber limit block one flexibly clamps the workpiece, which can effectively absorb vibration and protect the workpiece surface. When the milling force increases and overcomes the spring preload, the force is transmitted through the inclined surfaces of stop block one and stop block three, driving limit block two to extend and form rigid support with the workpiece, avoiding damage to the workpiece from the initial clamping, and at the same time providing sufficient support rigidity when needed, avoiding displacement and deformation of the workpiece during heavy milling, and ensuring machining accuracy.

[0017] In the above scheme, by setting up a pressure sensor, a second electromagnet, a third electromagnet, and an adjustment component, the coolant spray can be adjusted according to the real-time milling force. When the milling force is large, the external controller changes the repulsive force of the second and third electromagnets based on the pressure sensor signal, driving the turntable to rotate and reduce the chute angle. When the push rod acts on it, it drives the nozzle to swing slightly, achieving concentrated and precise spraying of coolant onto the milling point, ensuring efficient cooling and chip removal in the heavy-duty area. When the milling force is small, the chute angle is increased. At this time, the push rod drives the nozzle to swing significantly, allowing the coolant to cover a wider area, achieving uniform cooling and cleaning of the machined surface. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the workbench portion of the present invention;

[0020] Figure 3 This is a schematic diagram of the support structure of the present invention;

[0021] Figure 4 This is a cross-sectional schematic diagram of the mounting block portion of the present invention;

[0022] Figure 5 This is a schematic diagram showing the connection between the limiting block 2 and the positioning component of the present invention;

[0023] Figure 6 This is a schematic diagram of the connecting rod portion of the present invention;

[0024] Figure 7 This is a schematic diagram showing the connection between the mounting block and the positioning component of the present invention;

[0025] Figure 8 This is a disassembly diagram of the first stop block, the second limit block, and the positioning component of the present invention;

[0026] Figure 9 This is a schematic diagram showing the connection between the adjustment component and the milling cutter part of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of the rotating shaft and adjusting frame of the present invention;

[0028] Figure 11 This is a schematic diagram of the structure of the turntable and arc-shaped block in this invention.

[0029] Figure label:

[0030] 1. Milling machine body; 2. Mounting base; 3. Milling cutter; 31. Second gear; 4. Nozzle; 5. Collection groove; 6. Worktable; 7. Limiting plate; 8. Bracket; 9. Cylinder; 10. Mounting block; 11. Limiting block one; 12. Abutment block one; 13. Limiting block two; 14. Abutment block two; 15. Abutment block three; 16. Pressure sensor; 17. Positioning assembly; 171. Connecting rod; 172. Clamping block; 173. First electromagnet; 174. Elastic telescopic rod; 175. Clamping tooth; 18. Adjustment assembly; 181. Rotary shaft; 182. First gear; 183. Threaded block; 184. Abutment rod; 185. Adjustment frame; 186. Turntable; 187. Inclined groove; 19. Third gear; 20. Rack; 21. Arc block; 22. Second electromagnet; 23. Third electromagnet. Detailed Implementation

[0031] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0032] like Figures 1 to 11As shown, an embodiment of the present invention provides a milling device for processing automotive parts, comprising: a milling machine body 1, a mounting base 2 fixed to the bottom of the milling head at the front end of the milling machine body 1, a milling cutter 3 rotatably connected to the bottom of the mounting base 2, a nozzle 4 provided on the side wall of the mounting base 2 for spraying milling fluid, a collection tank 5 fixed below the front end of the milling machine body 1 for collecting metal chips generated during milling, a worktable 6 rotatably connected to the inner wall of the collection tank 5 via a motor, the motor driving the worktable 6 to rotate, so that the milling cutter 3 can mill different surfaces of the anti-collision beam, and a mounting base 4 fixed to the rear side of the top surface of the worktable 6. Multiple limiting plates 7 are fixed. One side of the anti-collision beam to be milled abuts against the limiting plate 7 for reference positioning. Multiple brackets 8 are slidably connected to the front side of the top face of the worktable 6 via guide rails. Each bracket 8 is connected to a mounting block 10 via a cylinder 9. A limiting block 11 is slidably connected in the mounting groove at the rear end of the mounting block 10. The limiting block 11 is made of rubber material. When the cylinder 9 pushes the mounting block 10 closer to the anti-collision beam, the limiting block 11 abuts against the anti-collision beam for flexible clamping and fixation. A stop block 12 is fixed to the front end of the limiting block 11. A second limiting block 1 is slidably connected to the outer wall of the mounting block 10. 3. Multiple abutment blocks 14 are fixed to the front end of the second limiting block 13. Each abutment block 14 is connected to the first abutment block 12 by a third abutment block 15. Each third abutment block 15 is slidably connected to the side wall opening of the mounting block 10 by a spring. A pressure sensor 16 is fixed in the mounting groove at the rear end of the mounting block 10. The pressure sensor 16 is connected to the first abutment block 12 by a spring. With the spring preload, the flexible clamping of the first limiting block 11 is kept stable when the milling force is small. When the milling force is large and overcomes the spring preload, the first limiting block 11 drives the first abutment block 12 to the rear end of the mounting block 10. Sliding within the mounting slot, abutment block 12 abuts against abutment block 3 15, and abutment block 3 15 further abuts against abutment block 2 14, thereby causing limit block 2 13 to slide close to the anti-collision beam and abut against the anti-collision beam to form a rigid support, preventing the anti-collision beam from continuing to have a large displacement, which would cause excessive deviation in the milling dimensions. At the same time, the rigid support prevents deformation of the milling position. A positioning component 17 is provided between limit block 2 13 and mounting block 10 for fixing after limit block 2 13 moves. An adjustment component 18 is provided between nozzle 4 and the front milling head of milling machine body 1 for adjusting the rotation of nozzle 4.

[0033] The first abutment 12 is a frustum-shaped structure, the second abutment 14 is a wedge-shaped structure, and the upper and lower ends of the third abutment 15 correspond to the inclined surfaces of the first abutment 12 and the second abutment 14, respectively. When the first limiting block 11 drives the first abutment 12 to slide into the mounting groove at the rear end of the mounting block 10, the first abutment 12 pushes the third abutment 15 radially out of the mounting block 10, and the third abutment 15 further pushes the second abutment 14 axially out of the mounting block 10.

[0034] The side wall of the bracket 8 is connected to the third gear 19 via a motor. The front side of the worktable 6 is fixed with a rack 20. The third gear 19 meshes with the rack 20 for transmission. Through the meshing of the third gear 19 and the rack 20, the bracket 8 is moved and adjusted on the guide rail. Thus, when milling different positions of the anti-collision beam, the bracket 8 can be positioned in the corresponding position to form support, preventing the anti-collision beam from deforming when the milling force is large.

[0035] Specifically, during the milling process, the anti-collision beam to be processed is placed on the top surface of the worktable 6, with one side abutting against multiple limiting plates 7 on the rear side, completing the initial positioning. Then, the motor drives the third gear 19 to rotate, which meshes with the rack 20 fixed to the front side of the bracket 8, thereby driving the bracket 8 to slide along the guide rail on the top surface of the worktable 6 to the predetermined position. Subsequently, the cylinder 9 on each bracket 8 is activated, pushing the mounting block 10 and the limiting block 11 connected to it closer to the anti-collision beam until the rubber limiting block 11 contacts the surface of the component, completing the flexible clamping and fixing. When the milling force is small, the reverse force generated by the vibration or slight displacement of the component on the limiting block 11 is absorbed and canceled by the spring connected between the pressure sensor 16 and the abutment block 12, ensuring the stability of the flexible clamping and avoiding rigid contact that could damage the surface of the component. When milling enters deep cutting or encounters areas with high hardness, resulting in a significant increase in milling force, the vibration or displacement tendency generated by the anti-collision beam intensifies, increasing the compressive force on the limiting block 11. When this force overcomes the spring preload, the limiting block 11 will drive the abutment block 12 fixed at its front end to slide together into the mounting groove at the rear end of the mounting block 10. During the sliding process, the truncated cone-shaped abutment block 12 contacts and compresses the upper inclined surfaces of multiple abutment blocks 15. This compressive action forces each abutment block 15 to overcome the elastic force of its own connecting spring and slide radially outward along the opening of the side wall of the mounting block 10. The lower inclined surface of the outwardly sliding abutment block 15 then abuts against the inclined surface of the wedge-shaped abutment block 14 at the front end of the limiting block 13, pushing the abutment block 14 together with the limiting block 13 outward along the axial direction of the mounting block 10. Thus, the second limiting block 13 can approach and eventually make close contact with the surface of the anti-collision beam, forming a rigid support. The positioning component 17 locks the second limiting block 13, which has slid into place, thereby providing stable auxiliary support for the anti-collision beam under the condition of excessive milling force, effectively suppressing it from continuing to produce large displacement or processing deformation, ensuring the milling dimensional accuracy and shape accuracy, and taking into account the dual needs of protecting the workpiece surface and resisting processing deformation.

[0036] The positioning component 17 includes multiple connecting rods 171 fixedly connected to the front end of the second limiting block 13. Each connecting rod 171 has a locking block 172 slidably connected to its front end via a spring. A first electromagnet 173 is fixedly connected through the side wall of each connecting rod 171 at the position corresponding to the locking block 172. When the second limiting block 13 needs to be reset, the first electromagnet 173 is energized to attract the locking block 172, so that the locking block 172 is retracted into the recessed groove at the front end of the connecting rod 171.

[0037] The positioning component 17 also includes multiple elastic telescopic rods 174 and multiple sets of locking teeth 175 fixed to the side wall of the mounting block 10. The movable ends of the multiple elastic telescopic rods 174 are fixedly connected to the second limiting block 13 to provide the pulling force when the second limiting block 13 is reset. The multiple sets of locking teeth 175 are correspondingly arranged at the positions of multiple locking blocks 172. When the second limiting block 13 moves towards the anti-collision beam, the inclined surface of the locking block 172 slides against the inclined surface of the locking tooth 175. After the movement, the vertical surface of the locking block 172 abuts against the vertical surface of the locking tooth 175 to prevent the second limiting block 13 from moving in the opposite direction during operation.

[0038] Specifically, as the limiting block 2 13 moves towards the automotive parts under the push of the abutment block 3 15, multiple connecting rods 171 fixed to its front end move synchronously. The locking block 172 at the front end of each connecting rod 171 remains extended under the action of a spring. When the locking block 172 moves to the position of the corresponding locking tooth 175 fixed to the side wall of the mounting block 10, the inclined surface of the locking block 172 first contacts and slides against the inclined surface of the locking tooth 175. During this sliding process, the locking block 172 is compressed, overcoming the elasticity of its internal spring, and temporarily retracts into the recessed groove at the front end of the connecting rod 171, thus allowing the limiting block 2 13 to smoothly pass over the set of locking teeth 175 and continue forward. Once the locking block 172 has completely passed over the locking teeth 175, its internal spring immediately ejects it to its original position. When the second limiting block 13 tends to move in the opposite direction due to external vibration or force, the vertical surface of the locking block 172 will abut against the vertical surface of the locking tooth 175, forming mechanical interference, thereby effectively preventing the second limiting block 13 from retracting and locking it in the current position that provides rigid support. When the milling is completed or the rigid support needs to be released, the first electromagnet 173 is energized, generating a magnetic force to attract the locking block 172, causing it to overcome the internal spring force and retract completely back into the inner groove of the connecting rod 171, thereby releasing the vertical surface interference between the locking block 172 and the locking tooth 175. At this time, under the restoring pull of multiple elastic telescopic rods 174, the second limiting block 13 is smoothly pulled back to its initial position.

[0039] The adjustment assembly 18 includes a rotating shaft 181 rotatably connected to the bottom of the milling head at the front end of the milling machine body 1. A first gear 182 is fixed at the bottom end of the rotating shaft 181, and a second gear 31 is fixed on the outside of the cutter holder of the milling cutter 3. The first gear 182 and the second gear 31 mesh and drive each other, thereby adjusting the rotation speed of the rotating shaft 181 according to the different rotation speeds of the milling cutter 3. A threaded block 183 is connected to the side wall of the rotating shaft 181 through a bidirectional helical groove. When the rotating shaft 181 rotates, the threaded block 183 moves up and down reciprocally through the bidirectional helical groove, which is the same principle as a reciprocating lead screw. A guide rod is slidably connected through one side of the threaded block 183. The guide rod is fixedly connected to the bottom surface of the milling head at the front end of the milling machine body 1 to prevent the threaded block 183 from rotating on its own. A stop rod 184 is fixed on the side of the threaded block 183 near the milling cutter 3.

[0040] The adjustment assembly 18 also includes an adjustment frame 185 that is rotatably connected to the outside of the mounting base 2. The nozzle 4 is fixed to the outside of the adjustment frame 185. A turntable 186 is rotatably connected to the outside of the adjustment frame 185 at a position corresponding to the push rod 184. A groove 187 is provided on the turntable 186. The push rod 184 abuts against and slides against the groove 187. When the threaded block 183 moves up and down, it drives the push rod 184 to move synchronously. The push rod 184 generates a tangential force by abutting against the groove 187, and drives the adjustment frame 185 to rotate back and forth along the mounting base 2 at a certain angle, so that the rotation frequency of the nozzle 4 can be adjusted according to the rotation speed of the milling cutter 3.

[0041] Two arc-shaped blocks 21 are symmetrically fixed to the side wall of the adjusting frame 185 about the turntable 186. A second electromagnet 22 is fixed to the lower side wall of each arc-shaped block 21. A third electromagnet 23 is symmetrically fixed to the side wall of the turntable 186. The polarities of the second electromagnet 22 and the third electromagnet 23 on opposite sides are the same. The second electromagnet 22 and the third electromagnet 23 on the same side form a group. Depending on the milling force, the pressure sensor 16 detects different pressures. The magnetic force of the second electromagnet 22 and the third electromagnet 23 is adjusted by an external controller, so that one group of second electromagnets 22 and 23 can be adjusted to achieve the desired magnetic force. The repulsive force between electromagnet 22 and the third electromagnet 23 increases, while the repulsive force between the second electromagnet 22 and the third electromagnet 23 decreases. Through magnetic force, the turntable 186 rotates and reaches a new magnetic balance after rotation, thereby changing the inclination of the inclined groove 187. When the inclined groove 187 is vertical, the abutment rod 184 will not abut against the inclined groove 187. The greater the inclination of the inclined groove 187, the greater the rotation amplitude of the turntable 186 caused by the abutment rod 184 abutting against the inclined groove 187. Thus, the rotation amplitude of the nozzle 4 can be adjusted according to different milling forces.

[0042] Specifically, during the milling process, the motor driving the milling cutter 3 rotates, causing the milling cutter 3 to start working. Since the second gear 31 is fixed to the outside of the cutter holder of the milling cutter 3, it rotates synchronously with the milling cutter 3. The second gear 31 meshes with the first gear 182 fixed to the bottom of the rotating shaft 181, thereby transmitting the rotational motion of the milling cutter 3 to the rotating shaft 181. When the rotating shaft 181 rotates, the bidirectional helical groove on its side wall cooperates with the threaded block 183, converting the rotational motion of the rotating shaft 181 into the reciprocating linear motion of the threaded block 183 along the vertical direction of the rotating shaft 181. The push rod 184 fixed on the threaded block 183 then moves up and down synchronously. The up and down moving push rod 184 contacts and slides against the side wall of the inclined groove 187, generating a periodic horizontal force on the side wall of the inclined groove 187, driving the adjusting frame 185 to rotate back and forth along the mounting base 2. The nozzle 4 fixed to the side wall of the adjusting frame 185 also swings back and forth, uniformly cooling the milled area.

[0043] Furthermore, the rotational speed of the shaft 181 and the rotational speed of the milling cutter 3 maintain a fixed proportional relationship. When the machining requirements change, causing the rotational speed of the milling cutter 3 to increase or decrease, the rotational speed of the shaft 181 also changes proportionally. The higher the rotational speed of the shaft 181, the higher the frequency of the thread block 183 moving up and down. Meanwhile, the pressure sensor 16, fixed to the rear end of the mounting block 10, monitors in real time the squeezing force of the automotive parts on the limit block 11 during milling. When the milling force changes, the pressure value detected by the pressure sensor 16 changes accordingly and transmits the signal to the external controller. The controller then adjusts the excitation current of the second electromagnet 22 fixed to the outside of the adjustment frame 185 and the third electromagnet 23 fixed to the side wall of the turntable 186 in real time. Since the polarities of the opposite faces of the second electromagnet 22 and the third electromagnet 23 on the same side are the same, they will generate a repulsive force after being energized. When the controller increases the magnetic force of one set of electromagnets while decreasing the magnetic force of the other set, the turntable 186 will be subjected to an unbalanced magnetic torque. Driven by this torque, the turntable 186 rotates until the repulsive torques on both sides reach a new equilibrium state. The rotation of the turntable 186 changes the inclination angle of its surface groove 187, thereby changing the rotation amplitude of the adjustment frame 185 when the push rod 184 abuts against the groove 187. When the milling force is large, the nozzle 4 oscillates back and forth at a higher frequency with small amplitude to concentrate the spraying of milling fluid to cool the milling position and clean up the milling debris.

[0044] The working principle of the technical solution provided by this invention is as follows:

[0045] During operation, the anti-collision beam to be processed is placed on the top surface of the workbench 6, with one side abutting against multiple limiting plates 7 for initial positioning. The motor drives the third gear 19 to rotate, meshing it with the rack 20, which in turn drives the bracket 8 to slide along the guide rail to the predetermined position. Then, the cylinder 9 pushes the mounting block 10 and the limiting block 11 closer to the anti-collision beam. The rubber limiting block 11 contacts the workpiece, forming a flexible clamp. At this time, the spring between the pressure sensor 16 and the abutment block 12 provides preload force to maintain stable clamping. Then, the milling cutter 3 starts processing, its rotation driving the second gear 31 on the outside of the cutter holder to rotate. This gear meshes with the first gear 182, driving the rotating shaft 181 to rotate. The bidirectional spiral groove on the side wall of the rotating shaft 181 causes the threaded block 183 to reciprocate up and down, causing the abutment rod 184 fixed on it to move accordingly. The abutment rod 184 interacts with the inclined groove 187 on the turntable 186, causing the adjusting frame 185 to rotate reciprocally, making the nozzle 4 swing and spray coolant evenly.

[0046] When milling enters deep cutting or encounters a hard area, causing an increase in milling force, the vibration or displacement tendency of the anti-collision beam intensifies. When the force acting on the limiting block 11 overcomes the spring preload, the limiting block 11 drives the frustum-shaped abutment block 12 to slide towards the rear end of the mounting block 10. The inclined surface of the abutment block 12 presses against multiple abutment blocks 3 15, causing them to slide radially outward. The inclined surface of the lower end of the outward sliding abutment block 3 15 presses against the wedge-shaped abutment block 2 14, pushing the abutment block 2 14 and the limiting block 2 13 axially outward, making them contact the workpiece to form a rigid support. During this process, the locking block 172 at the front end of the connecting rod 171 moves with the limiting block 2 13. After its inclined surface slides past the locking tooth 175, it pops out under the action of the spring. The vertical surface of the locking block 172 abuts against the vertical surface of the locking tooth 175, locking the limiting block 2 13 in the support position. At the same time, the pressure change signal detected by the pressure sensor 16 is transmitted to the external controller. The controller adjusts the current of the second electromagnet 22 and the third electromagnet 23 to change their magnetic force. Because the electromagnets on the same side have the same polarity, they generate a repulsive force. The unbalanced magnetic torque drives the turntable 186 to rotate, changing the tilt angle of the sloping groove 187. When the milling force is large, the tilt angle of the sloping groove 187 decreases, the swing amplitude of the adjusting frame 185 decreases, and the nozzle 4 concentrates cooling of the milling point at a higher frequency.

[0047] After processing is completed or when the support needs to be removed, the first electromagnet 173 is energized to pull the locking block 172 back into the connecting rod 171, releasing the lock with the locking tooth 175, and the elastic telescopic rod 174 pulls the limit block 13 back to its original position.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A milling device for processing of automobile parts, characterized by, include: A milling machine body (1) has a mounting base (2) fixed at the bottom of the milling head mechanism at the front end of the milling machine body (1). A milling cutter (3) is rotatably connected to the bottom of the mounting base (2). A nozzle (4) is provided on the side wall of the mounting base (2). A collection groove (5) is fixed below the front end of the milling machine body (1). A worktable (6) is rotatably connected to the inner wall of the collection groove (5) via a motor. Multiple limiting plates (7) are fixed to the rear side of the top surface of the worktable (6). Multiple brackets (8) are slidably connected to the front side of the top surface of the worktable (6) via guide rails. Each bracket (8) is connected to a mounting block (10) via a cylinder (9). The mounting block (10) A limiting block 1 (11) is slidably connected in the rear mounting groove. A stop block 1 (12) is fixed at the front end of the limiting block 1 (11). A limiting block 2 (13) is slidably connected to the outer wall of the mounting block (10). A plurality of stop blocks 2 (14) are fixed at the front end of the limiting block 2 (13). A stop block 3 (15) is provided between each stop block 2 (14) and the stop block 1 (12). Each stop block 3 (15) is slidably connected to the side wall opening of the mounting block (10) by a spring. A pressure sensor (16) is fixed in the rear mounting groove of the mounting block (10). The pressure sensor (16) abuts against the stop block 1 (12) by a spring. The first abutment (12) is a frustum-shaped structure, the second abutment (14) is a wedge-shaped structure, and the upper and lower ends of the third abutment (15) correspond to the inclined surfaces of the first abutment (12) and the second abutment (14) respectively. A positioning component (17) is provided between the limiting block 2 (13) and the mounting block (10), and an adjustment component (18) is provided between the nozzle (4) and the front milling head of the milling machine body (1). The positioning component (17) includes multiple connecting rods (171) fixedly connected to the front end of the limiting block two (13). Each connecting rod (171) has a locking block (172) slidably connected to its front end via a spring. A first electromagnet (173) is fixedly connected through the side wall of each connecting rod (171) at the position corresponding to the locking block (172). The positioning component (17) also includes multiple elastic telescopic rods (174) and multiple sets of locking teeth (175) fixed to the side wall of the mounting block (10). The movable ends of the multiple elastic telescopic rods (174) are fixedly connected to the second limiting block (13), and the multiple sets of locking teeth (175) are correspondingly arranged at the positions of multiple locking blocks (172). By setting limit block one (11), stop block one (12), stop block three (15) and limit block two (13), the effect of adaptively switching between flexible clamping and rigid support according to the milling force is realized. When the initial milling or the milling force is small, the rubber limit block one (11) flexibly clamps the workpiece, which can effectively absorb vibration and protect the workpiece surface. When the milling force increases and overcomes the spring preload, the force is transmitted through the inclined surfaces of stop block one (12) and stop block three (15), driving limit block two (13) to extend and form rigid support with the workpiece.

2. The milling device for processing of automobile parts as claimed in claim 1 wherein, The side wall of the bracket (8) is connected to a third gear (19) via a motor rotation, and a rack (20) is fixed to the front side of the workbench (6). The third gear (19) meshes with the rack (20) for transmission.

3. The milling device for processing automotive parts according to claim 1, characterized in that, The adjustment assembly (18) includes a rotating shaft (181) rotatably connected to the bottom of the milling head at the front end of the milling machine body (1). A first gear (182) is fixed at the bottom end of the rotating shaft (181), and a second gear (31) is fixed on the outside of the tool holder of the milling cutter (3). The first gear (182) and the second gear (31) mesh and drive each other. A threaded block (183) is connected to the side wall of the rotating shaft (181) through a bidirectional spiral groove. A guide rod is slidably connected through one side of the threaded block (183). The guide rod is fixedly connected to the bottom surface of the milling head at the front end of the milling machine body (1). A stop rod (184) is fixed on the side of the threaded block (183) near the milling cutter (3).

4. The milling device for processing automotive parts according to claim 3, characterized in that, The adjustment assembly (18) also includes an adjustment frame (185) that is rotatably connected to the outside of the mounting base (2). The nozzle (4) is fixed to the outside of the adjustment frame (185). A turntable (186) is rotatably connected to the outside of the adjustment frame (185) at a position corresponding to the push rod (184). An inclined groove (187) is provided on the turntable (186). The push rod (184) abuts against and slides against the inclined groove (187).

5. A milling device for processing automotive parts according to claim 4, characterized in that, The side wall of the adjustment frame (185) is symmetrically fixed with respect to the turntable (186) with two arc-shaped blocks (21). Each arc-shaped block (21) has a second electromagnet (22) fixed on its lower side wall. The side wall of the turntable (186) is symmetrically fixed with a third electromagnet (23). The polarities of the second electromagnet (22) and the third electromagnet (23) are the same on the opposite side.

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