Milling mechanism for workpiece surface treatment

Abstract

The utility model discloses a milling mechanism for workpiece surface treatment, which belongs to the technical field of workpiece milling and comprises a base, a stepping motor fixing plate is arranged on the upper surface of the base, and a fifth inner hexagon screw is mounted between the stepping motor fixing plate and the upper surface of the base in a threaded manner. A grinding wheel is used in cooperation with a servo motor and a main shaft in a motor box, the motor box is connected with a connecting plate through a lower spring base, a spring and an upper spring base, the connecting plate ascends and descends under the action of a ball screw and a ball nut, and when the grinding wheel makes contact with the surface of a workpiece, the spring is adopted for buffering; collision between the grinding wheel and a workpiece is effectively avoided, hard contact collision damage is avoided, compression elastic force of the spring provides pressure for the grinding process, the grinding wheel descends independently to grind the surface of the workpiece, the grinding head can ascend independently after grinding is completed, the automation degree is high, and compared with abrasive belt type grinding, the grinding wheel is more durable, cost is saved, and time is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of workpiece milling, and particularly relates to a milling mechanism for workpiece surface treatment. Background Art

[0002] Milling refers to using a rotating multi-edge tool to cut a workpiece, which is a high-efficiency machining method. During operation, the tool rotates as the main motion, and the workpiece moves as the feed motion. The workpiece can also be fixed, but in this case, the rotating tool must also move to complete both the main motion and the feed motion simultaneously.

[0003] Most of the existing methods for milling and grinding the surface of workpieces are manual grinding of the workpiece surface, which requires operating in a hand-held abrasive belt grinding mode. In the abrasive belt grinding mode, the abrasive belt is not durable and needs to be replaced frequently, reducing work efficiency. When using a diamond cup wheel to grind the surface of the workpiece, the grinding wheel lacks an effective elastic buffer mechanism. Therefore, when the grinding wheel contacts the workpiece, it is easy to cause hard collisions and surface damage. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a milling mechanism for workpiece surface treatment, so as to solve the problems in the above background art that most of the existing methods for milling and grinding the surface of workpieces are manual grinding of the workpiece surface, which requires operating in a hand-held abrasive belt grinding mode. In the abrasive belt grinding mode, the abrasive belt is not durable and needs to be replaced frequently, reducing work efficiency. When using a diamond cup wheel to grind the surface of the workpiece, the grinding wheel lacks an effective elastic buffer mechanism. Therefore, when the grinding wheel contacts the workpiece, it is easy to cause hard collisions and surface damage.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A milling mechanism for workpiece surface treatment, including a base, on the upper surface of the base is provided a stepping motor fixing plate, between the stepping motor fixing plate and the upper surface of the base are threadedly installed hexagon socket head cap screws five, on the side of the stepping motor fixing plate is installed a stepping motor through hexagon socket head cap screw one, on the upper and lower sides of the base are respectively provided an upper bearing seat and a lower bearing seat, between the upper bearing seat and the lower bearing seat and the base are threadedly installed hexagon socket head cap screws seven, between the upper bearing seat and the lower bearing seat is rotatably installed a ball screw, the top of the ball screw passes through the upper bearing seat and is fixedly connected to the output shaft of the stepping motor, on the outer surface of the ball screw is threadedly installed a ball nut, on the side of the base is provided a connecting plate, between the ball nut and the connecting plate are threadedly installed hexagon socket head cap screws eight, on the side of the connecting plate is provided an upper spring seat, below the upper spring seat is provided a lower spring seat, between the upper spring seat and the lower spring seat is embedded a spring, on the lower spring seat are threadedly installed a plurality of hexagon socket head cap screws four and through the hexagon socket head cap screws four is installed a motor box, inside the motor box is fixedly installed a servo motor, the output shaft of the servo motor is inserted with a main shaft, the main shaft extends through and out of the motor box and is detachably installed with a grinding wheel.

[0006] Adopting the above scheme, by using the grinding wheel in cooperation with the servo motor and the main shaft inside the motor box, the motor box is connected to the connecting plate through the lower spring seat, the spring and the upper spring seat, and the connecting plate makes a vertical lifting movement under the action of the ball screw and the ball nut. When the grinding wheel contacts the workpiece surface, spring buffering is adopted, effectively avoiding the collision between the grinding wheel and the workpiece and avoiding hard contact collision damage. And the compression elastic force of the spring provides pressure for the grinding process. The grinding wheel can descend alone to grind the workpiece surface. After grinding, the grinding head can rise alone, with high automation. Compared with belt grinding, the grinding wheel is more durable, saving cost and time.

[0007] In the above scheme, it should be noted that both the stepping motor and the servo motor are electrically connected to an external power supply.

[0008] As a preferred implementation manner, on the side of the connecting plate is provided a bent plate, on the bent plate are threadedly installed a plurality of hexagon socket head cap screws two and a plurality of hexagon socket head cap screws three, the bent plate is detachably connected to the connecting plate through the hexagon socket head cap screws two, and the bent plate is detachably connected to the upper spring seat through the hexagon socket head cap screws three.

[0009] Adopting the above scheme, the setting of the bent plate can complete the connection and assembly between the connecting plate and the upper spring seat, and the bent plate can ensure good connection stability, avoiding connection loosening. The settings of the hexagon socket head cap screws two and the hexagon socket head cap screws three facilitate the disassembly and assembly operations between the bent plate and the connecting plate and the upper spring seat.

[0010] As a preferred embodiment, a number of guide rails are fixedly installed inside the base, and a number of sliders are slidably installed on the outer surface of the guide rails. The sliders are installed on the side surface of the connecting plate by hex socket head cap screws six.

[0011] Adopting the above scheme, when the connecting plate moves up and down under the rotation of the ball screw, it will drive the slider to slide on the surface of the guide rail. Furthermore, the cooperation of the guide rail and the slider can ensure good smoothness of the up and down movement of the connecting plate. The setting of the hex socket head cap screws six can facilitate the installation of the connecting plate and the slider.

[0012] As a preferred embodiment, a telescopic rod is arranged inside the spring, and both ends of the telescopic rod are fixedly connected with the upper spring seat and the lower spring seat respectively.

[0013] Adopting the above scheme, the telescopic rod (not shown in the figure) follows the deformation of the spring and synchronously expands and contracts, playing a good supporting effect, preventing the motor box from shaking, and improving the movement stability.

[0014] As a preferred embodiment, a bearing is rotatably installed on the outside of the main shaft, a bearing seat is clamped on the outer surface of the bearing, and the bearing seat is installed on the lower surface of the motor box by hex socket head cap screws nine.

[0015] Adopting the above scheme, the setting of the bearing can support the main shaft, avoid the shaking phenomenon when the main shaft rotates with the output shaft of the servo motor, and improve the movement smoothness.

[0016] As a preferred embodiment, the outer surface of the main shaft has threads and a nut is threadedly installed. The nut is used to fixedly lock the grinding wheel.

[0017] Adopting the above scheme, the setting of the nut can realize the portable locking of the grinding wheel, facilitate the disassembly and assembly operation of the grinding wheel, and the threaded connection has good stability and is not easy to loosen and fall off.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] The milling mechanism for workpiece surface treatment cooperates the grinding wheel with the servo motor and the main shaft inside the motor box. The motor box is connected with the connecting plate through the lower spring seat, the spring and the upper spring seat. The connecting plate moves up and down under the action of the ball screw and the ball nut. When the grinding wheel contacts the workpiece surface, spring buffering is adopted, effectively avoiding the collision between the grinding wheel and the workpiece and avoiding hard contact collision damage. And the compression elastic force of the spring provides pressure for the grinding process. The grinding wheel can descend alone to grind the workpiece surface. After grinding, the grinding head can rise alone. The degree of automation is high. Compared with belt grinding, the grinding wheel is more durable, saving costs and time. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the cross-section of the present utility model.

[0022] In the figure: 1. Stepper motor; 2. Hexagon socket head cap screw one; 3. Upper bearing seat; 4. Hexagon socket head cap screw two; 5. Bent plate; 6. Hexagon socket head cap screw three; 7. Upper spring seat; 8. Hexagon socket head cap screw four; 9. Motor box; 10. Grinding wheel; 11. Stepper motor fixing plate; 12. Hexagon socket head cap screw five; 13. Base; 14. Hexagon socket head cap screw six; 15. Hexagon socket head cap screw seven; 16. Ball screw; 17. Slide block; 18. Ball screw nut; 19. Hexagon socket head cap screw eight; 20. Connecting plate; 21. Guide rail; 22. Lower bearing seat; 23. Spring; 24. Lower spring seat; 25. Servo motor; 26. Hexagon socket head cap screw nine; 27. Bearing seat; 28. Bearing; 29. Spindle; 30. Nut. Specific embodiments

[0023] Please refer to Figure 1-2 , the present utility model provides a milling mechanism for workpiece surface treatment, including a base 13. A stepper motor fixing plate 11 is provided on the upper surface of the base 13. A hexagon socket head cap screw five 12 is threadedly installed between the stepper motor fixing plate 11 and the upper surface of the base 13. A stepper motor 1 is installed on the side of the stepper motor fixing plate 11 through a hexagon socket head cap screw one 2. Upper bearing seats 3 and lower bearing seats 22 are respectively provided on the upper and lower sides of the base 13. Hexagon socket head cap screws seven 15 are threadedly installed between the upper bearing seats 3 and the lower bearing seats 22 and the base 13. A ball screw 16 is rotatably installed between the upper bearing seat 3 and the lower bearing seat 22. The top end of the ball screw 16 passes through the upper bearing seat 3 and is fixedly connected to the output shaft of the stepper motor 1. A ball screw nut 18 is threadedly installed on the outer surface of the ball screw 16. A connecting plate 20 is provided on the side of the base 13. A hexagon socket head cap screw eight 19 is threadedly installed between the ball screw nut 18 and the connecting plate 20. An upper spring seat 7 is provided on the side of the connecting plate 20. A lower spring seat 24 is provided below the upper spring seat 7. A spring 23 is embedded between the upper spring seat 7 and the lower spring seat 24. A plurality of hexagon socket head cap screws four 8 are threadedly installed on the lower spring seat 24 and a motor box 9 is installed through the hexagon socket head cap screws four 8. A servo motor 25 is fixedly installed inside the motor box 9. The output shaft of the servo motor 25 is inserted with a spindle 29. The spindle 29 extends through and out of the motor box 9 and a grinding wheel 10 is detachably installed.

[0024] By using the grinding wheel 10 in cooperation with the servo motor 25 and the main shaft 29 inside the motor box 9, the motor box 9 is connected to the connecting plate 20 through the lower spring seat 24, the spring 23 and the upper spring seat 7. The connecting plate 20 moves up and down under the action of the ball screw 16 and the ball nut 18. When the grinding wheel 10 contacts the surface of the workpiece, the spring 23 is used for buffering, effectively avoiding the collision between the grinding wheel 10 and the workpiece and preventing hard contact collision damage. Moreover, the compression elastic force of the spring 23 provides pressure for the grinding process. The grinding wheel 10 descends alone to grind the surface of the workpiece. After grinding, the grinding head can rise alone, with a high degree of automation. Compared with belt grinding, the grinding wheel 10 is more durable, saving costs and time.

[0025] A bent plate 5 is arranged on the side surface of the connecting plate 20. A number of hex socket head cap screws II 4 and a number of hex socket head cap screws III 6 are threadedly installed on the bent plate 5. The bent plate 5 is detachably connected to the connecting plate 20 through the hex socket head cap screws II 4, and the bent plate 5 is detachably connected to the upper spring seat 7 through the hex socket head cap screws III 6. The setting of the bent plate 5 can complete the connection and assembly between the connecting plate 20 and the upper spring seat 7, and the bent plate 5 can ensure good connection stability, avoiding the phenomenon of connection loosening. The settings of the hex socket head cap screws II 4 and the hex socket head cap screws III 6 facilitate the disassembly and assembly operations between the bent plate 5, the connecting plate 20 and the upper spring seat 7.

[0026] A number of guide rails 21 are fixedly installed inside the base 13. A number of sliders 17 are slidably installed on the outer surface of the guide rails 21. The sliders 17 are installed on the side surface of the connecting plate 20 through the hex socket head cap screws VI 14. When the connecting plate 20 moves up and down under the rotation of the ball screw 16, it will drive the sliders 17 to slide on the surface of the guide rails 21. Therefore, the cooperation of the guide rails 21 and the sliders 17 can ensure good smoothness of the up and down movement of the connecting plate 20. The setting of the hex socket head cap screws VI 14 facilitates the installation of the connecting plate 20 and the sliders 17.

[0027] An expansion rod is arranged inside the spring 23. The two ends of the expansion rod are respectively fixedly connected to the upper spring seat 7 and the lower spring seat 24. The expansion rod is not shown in the figure. The expansion rod synchronously expands and contracts with the deformation of the spring 23, playing a good supporting role, preventing the motor box 9 from shaking and improving the movement stability.

[0028] A bearing 28 is rotatably installed on the outside of the main shaft 29. The outer surface of the bearing 28 is clamped with a bearing seat 27. The bearing seat 27 is installed on the lower surface of the motor box 9 through the hex socket head cap screws IX 26. The setting of the bearing 28 can support the main shaft 29, avoiding the phenomenon of shaking when the main shaft 29 rotates with the output shaft of the servo motor 25 and improving the movement smoothness.

[0029] The outer surface of the main shaft 29 has threads, and a nut 30 is threadedly installed. The nut 30 is used to fixedly lock the grinding wheel 10. The setting of the nut 30 enables the portable locking of the grinding wheel 10, facilitating the disassembly and assembly operations of the grinding wheel 10. The threaded connection has good stability and is not prone to loosening and falling off.

[0030] During use, when the workpiece reaches below the grinding wheel 10, the servo motor 25 is started, and at the same time, the stepping motor 1 is also started. When the stepping motor 1 is started, it drives the ball screw 16 to rotate, thereby causing the ball nut 18 to drive the connecting plate 20 to move downward. The connecting plate 20 drives the upper spring seat 7 to move downward through the bent plate 5. The upper spring seat 7 drives the motor box 9 to move downward through the spring 23 and the lower spring seat 24. Furthermore, the grinding wheel 10 is driven to move downward through the servo motor 25 and the main shaft 29. The grinding wheel 10 moves downward and grinds the surface of the workpiece. When the grinding wheel 10 contacts the surface of the workpiece, the spring 23 is used for buffering to prevent damage caused by improper contact between the grinding wheel 10 and the workpiece, and the compression elastic force of the spring 23 provides pressure for the grinding process. After grinding is completed, the stepping motor 1 rotates in the reverse direction, driving the ball screw 16 to rotate in the reverse direction, thereby causing the ball nut 18 to drive the connecting plate 20 and the grinding wheel 10 to move upward to the origin.

Claims

1. A milling mechanism for workpiece surface treatment, characterized in that: It includes a base (13). A stepper motor fixing plate (11) is provided on the upper surface of the base (13). An internal hexagonal screw five (12) is threadedly installed between the stepper motor fixing plate (11) and the upper surface of the base (13). A stepper motor (1) is installed on the side of the stepper motor fixing plate (11) through an internal hexagonal screw one (2). Upper bearing seats (3) and lower bearing seats (22) are respectively provided on the upper and lower sides of the base (13). An internal hexagonal screw seven (15) is threadedly installed between the upper bearing seat (3), the lower bearing seat (22) and the base (13). A ball screw (16) is rotatably installed between the upper bearing seat (3) and the lower bearing seat (22). The top end of the ball screw (16) passes through the upper bearing seat (3) and is fixedly connected to the output shaft of the stepper motor (1). A ball nut (18) is threadedly installed on the outer surface of the ball screw (16). A connecting plate (20) is provided on the side of the base (13). An internal hexagonal screw eight (19) is threadedly installed between the ball nut (18) and the connecting plate (20). An upper spring seat (7) is provided on the side of the connecting plate (20). A lower spring seat (24) is provided below the upper spring seat (7). A spring (23) is embedded between the upper spring seat (7) and the lower spring seat (24). A number of internal hexagonal screws four (8) are threadedly installed on the lower spring seat (24) and a motor box (9) is installed through the internal hexagonal screws four (8). A servo motor (25) is fixedly installed inside the motor box (9). The output shaft of the servo motor (25) is inserted with a main shaft (29). The main shaft (29) extends through the motor box (9) and a grinding wheel (10) is detachably installed.

2. The milling mechanism for workpiece surface treatment according to claim 1, characterized in that: A bent plate (5) is provided on the side of the connecting plate (20). A number of internal hexagonal screws two (4) and a number of internal hexagonal screws three (6) are threadedly installed on the bent plate (5). The bent plate (5) is detachably connected to the connecting plate (20) through the internal hexagonal screws two (4). The bent plate (5) is detachably connected to the upper spring seat (7) through the internal hexagonal screws three (6).

3. The milling mechanism for workpiece surface treatment according to claim 1, characterized in that: A number of guide rails (21) are fixedly installed inside the base (13). A number of sliders (17) are slidably installed on the outer surface of the guide rails (21). The sliders (17) are installed on the side of the connecting plate (20) through internal hexagonal screws six (14).

4. The milling mechanism for workpiece surface treatment according to claim 1, characterized in that: An expansion rod is provided inside the spring (23). The two ends of the expansion rod are respectively fixedly connected to the upper spring seat (7) and the lower spring seat (24).

5. The milling mechanism for workpiece surface treatment according to claim 1, characterized in that: A bearing (28) is rotatably installed on the outside of the main shaft (29). A bearing seat (27) is clamped on the outer surface of the bearing (28). The bearing seat (27) is installed on the lower surface of the motor box (9) through an internal hexagonal screw nine (26).

6. The milling mechanism for workpiece surface treatment according to claim 1, characterized in that: The outer surface of the main shaft (29) has a thread and a nut (30) is threadedly installed. The nut (30) is used to fixedly lock the grinding wheel (10).

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