Tool bit switching device

Abstract

The utility model belongs to the technical field of machining equipment manufacturing, and particularly relates to a tool bit switching device which comprises a frame body, a tool bit seat is arranged on the frame body through a first rotating shaft, and a tool bit installer is arranged at the position, away from the first rotating shaft, of the tool bit seat in a penetrating mode through an elastic piece. A second rotating shaft is arranged at the position, away from the tool bit seat, of the frame body, a cam is arranged on the second rotating shaft, and a mounting column is arranged at the position, between the first rotating shaft and the second rotating shaft, of the frame body; in the rotating process of the first rotating shaft, the first pressing head can abut against one end of the tool bit installer, and the second pressing head abuts against the control face on the cam. In the rotating process of the second rotating shaft, the second rotating shaft can drive the control face on the cam to abut against the second pressing head to control the shifting rod to rotate, and then the first pressing head extrudes or gets away from the tool bit installer. The problem of how to automatically change the tool is solved.

Description

Technical Field

[0001] This application belongs to the field of processing equipment manufacturing technology, specifically a tool switching device. Background Technology

[0002] In the machining process, tool switching is crucial. Generally, the roughing tool is used first, similar to contour cutting, followed by the medium tool, and then the fine tool. This is because using a very fine tool from the start can cause the cutting depth to exceed the limit, leading to tool breakage. However, in these situations, tool switching requires stopping the machine and manual tool changing; automatic tool changing is not possible. Utility Model Content

[0003] This application addresses the shortcomings of existing technologies by designing a tool switching device that uses a tool holder controlled by a cam and a spring on the tool holder. This device can quickly and automatically switch tools, thus solving the problem of how to automatically change tools.

[0004] The technical solution of this application is as follows:

[0005] A cutter head switching device includes a frame, a cutter head seat mounted on the frame via a first rotating shaft, a cutter head mount mounted on the cutter head seat via an elastic element at a position away from the first rotating shaft, a second rotating shaft mounted on the frame at a position away from the cutter head seat, the second rotating shaft being parallel to the first rotating shaft, a cam mounted on the second rotating shaft, a mounting post mounted on the frame between the first and second rotating shafts, the mounting post being located on the side of the cutter head seat facing the bottom of the cutter head mount, a lever rotatably mounted on the mounting post at both ends, a first pressure head radially mounted at one end of the lever, and a second pressure head radially mounted at the other end, the first pressure head being parallel to the second pressure head;

[0006] During the rotation of the first rotating shaft, the first pressure head can abut against one end of the cutter head mounter, and the second pressure head abuts against the control surface on the cam;

[0007] During the rotation of the second rotating shaft, the second rotating shaft can drive the control surface on the cam to abut against the second pressure head, controlling the rotation of the lever, thereby enabling the first pressure head to squeeze or move away from the cutter head mounter.

[0008] Preferably, the device further includes a first motor and a second motor, wherein the first motor is driven to the first rotating shaft and the second motor is driven to the second rotating shaft.

[0009] Preferably, the cutter head holder includes a base body, a main housing, and a cover body. The elastic element is a spring. The cutter head mount includes several mounting rods. The base body is fixedly mounted on the first rotating shaft. The main housing is mounted on the base body away from the first rotating shaft. The main housing has several first through holes around the first rotating shaft. The axis of each first through hole is parallel to the first rotating shaft. One first through hole passes through the two ends of a mounting rod. A stop is radially provided between the two ends of each mounting rod in the first through hole. A flange is coaxially provided on the side of each first through hole facing away from the first pressure head. The two ends of the mounting rod are slidably connected to the inner surface of the flange. The spring is sleeved on each mounting rod in the corresponding first through hole and located between the flange and the stop. The cover body covers the side of the main housing facing the first pressure head. A second through hole is coaxially provided on the cover body corresponding to each first through hole. The circumferential surface of the second through hole is slidably connected to the two ends of the corresponding mounting rod. The inner diameter of the second through hole is equal to the inner diameter of the flange.

[0010] Preferably, the cover and the main housing are detachably connected by bolts.

[0011] Preferably, the rotation axis of the lever is perpendicular to the first rotation axis, the length line of the first pressure head is parallel to the rotation axis of the lever, and the projection of the lever on the plane perpendicular to the first rotation axis on the base can be located at the gap between any two adjacent first through holes.

[0012] Preferably, the cam includes a wheel base and a wheel side wall. The wheel base is coaxially fixed on the second rotating shaft. The wheel side wall is provided on the outer edge of one end face of the wheel base. The wheel side wall has two V-shaped notches. The closed ends of the V-shapes face the wheel base, and the open ends of the V-shapes extend to the side of the wheel side wall facing away from the wheel base. The distance between the free end of the second pressure head and the central axis of the wheel base is less than the distance between the inner wall of the wheel side wall and the central axis of the wheel base. The distance between the connection point of the second pressure head and the lever and the central axis of the wheel base is greater than the distance between the inner wall of the wheel side wall and the central axis of the wheel base. The distance from the outer wall of the wheel wall to the central axis of the wheel bottom is such that when the second pressure head contacts the V-shaped inner bottom wall of the notch and the spring is in its normal state, the projection of the first pressure head on the central axis of the first rotating shaft is away from or in contact with the projection of the end of the mounting rod facing the lever on the central axis of the first rotating shaft; when the second pressure head contacts the side of the wheel wall facing away from the wheel bottom and the spring is in a compressed state, the projection of the first pressure head on the central axis of the first rotating shaft contacts the projection of the end of the mounting rod facing the lever on the central axis of the first rotating shaft.

[0013] Compared with the prior art, the beneficial effects of this application are as follows:

[0014] 1. This application adopts a method of setting a cutter head installer controlled by a cam and a spring on the cutter head holder, and designs a cutter head switching device that can quickly and automatically switch cutters, thus solving the problem of how to automatically change cutters.

[0015] 2. In this application, the first motor drives the first rotating shaft to rotate, thereby controlling the position of the tool head holder. This allows the tool head located on the tool head holder to be aligned with the workpiece when a tool change is needed. The second motor drives the second rotating shaft to automatically push the appropriate tool head toward the workpiece, thereby enabling contact with the workpiece and processing of the workpiece. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this application;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure on the back side;

[0018] Figure 3 This is a schematic diagram of the structure after the main shell is cut open in this application;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of this application in use;

[0021] Figure 6 This is a schematic diagram of the cam structure in this application.

[0022] The components are as follows: 1. Frame; 2. First rotating shaft; 3. Cutter head holder; 4. Second rotating shaft; 5. Mounting column; 6. Lever; 7. First pressure head; 8. Second pressure head; 9. First motor; 10. Second motor; 11. Main housing; 12. Cover; 13. Spring; 14. Mounting rod; 15. First through hole; 16. Stop block; 17. Flange; 18. Second through hole; 19. Bolt; 20. Wheel base; 21. Wheel side wall; 22. Notch; 23. Cutter head; 24. Seat; 25. Workpiece; 16. Other machines. Detailed Implementation

[0023] like Figure 1-6As shown, a blade switching device includes a frame 1. A blade holder 3 is provided on the frame 1 via a first rotating shaft 2. A blade mounter is provided on the blade holder 3 at a location away from the first rotating shaft 2 via an elastic element. A second rotating shaft 4 is provided on the frame 1 at a location away from the blade holder 3. The second rotating shaft 4 is parallel to the first rotating shaft 2. A cam is provided on the second rotating shaft 4. A mounting post 5 is provided on the frame 1 between the first rotating shaft 2 and the second rotating shaft 4. The mounting post 5 is located on the side of the blade holder 3 facing the bottom of the blade mounter. The two ends of a lever 6 are rotatably mounted on the mounting post 5. A first pressure head 7 is provided radially at one end of the lever 6, and a second pressure head 8 is provided radially at the other end. The first pressure head 7 and the second pressure head 8 are parallel to each other.

[0024] During the rotation of the first rotating shaft 2, the first pressure head 7 can abut against one end of the cutter head mounter, and the second pressure head 8 abuts against the control surface on the cam;

[0025] During the rotation of the second rotating shaft 4, the second rotating shaft 4 can drive the control surface on the cam to abut against the second pressure head 8 to control the rotation of the lever 6, thereby enabling the first pressure head 7 to squeeze or move away from the cutter head mounter.

[0026] In this application, when used, such as Figure 5 As shown, the workpiece 25 is clamped by the chuck on the spindle of another machine 26 (such as a lathe), causing the workpiece 25 located on the other machine 26 to rotate. During the rotation of the workpiece 25, it comes into contact with the cutting head 23, thus achieving processing, such as grinding. The cutting head mount provided in this application can be equipped with several cutting heads 23. For example, when the first cutting head 23 is needed, the first rotating shaft 2 rotates to align the first cutting head 23 with the workpiece 25. Then, the second rotating shaft 4 rotates to a preset angle, causing the cam to push the second pressure head 8 away from the cutting head holder 3, thereby causing the lever 6 to rotate. As the second pressure head 8 on the lever 6 moves away from the cutting head holder 3 (that is, the distance between the second pressure head 8 and the cutting head holder 3 increases), the first pressure head 7 located at the other end of the lever 6 moves towards the cutting head holder 3. During the movement, the first cutting head 23 is moved towards the other machine 26 until it contacts the workpiece 25, thus processing the workpiece 25. In this way, automatic tool changing can be performed at any time through a simple mechanical method. Unlike traditional techniques, it eliminates the need for manual tool changing by removing the original tool and installing a new one.

[0027] As a preferred embodiment, the system also includes a first motor 9 and a second motor 10. The first motor 9 is driven by the first rotating shaft 2, and the second motor 10 is driven by the second rotating shaft 4. Thus, the first motor 9 drives the first rotating shaft 2 to rotate, controlling the position of the tool holder 3. This allows the tool 23 mounted on the tool holder 3 to be aligned with the workpiece when a tool change is needed. The second motor 10 drives the second rotating shaft 4 to automatically push the appropriate tool 23 towards the workpiece 25, enabling contact and machining of the workpiece 25.

[0028] As a preferred method, such as Figure 3 and Figure 4 As shown, the cutter head holder 3 includes a seat body 24, a main housing 11, and a cover 12. The elastic element is a spring 13. The cutter head mount includes several mounting rods 14. The seat body 24 is fixedly mounted on the first rotating shaft 2. The main housing 11 is mounted on the seat body 24 away from the first rotating shaft 2. The main housing 11 has several first through holes 15 around the first rotating shaft 2. The axis of each first through hole 15 is parallel to the first rotating shaft 2. One first through hole 15 passes through the two ends of one mounting rod 14. A stop block 16 is radially provided between the two ends of each mounting rod 14 within the first through hole 15. A flange 17 is coaxially provided on the side of the first through hole 15 facing away from the first pressure head 7. The two ends of the mounting rod 14 are slidably connected to the inner surface of the flange 17. A spring 13 is sleeved on each mounting rod 14 in the corresponding first through hole 15 and between the flange 17 and the stop block 16. The cover 12 covers the side of the main housing 11 facing the first pressure head 7. A second through hole 18 is coaxially provided on the cover 12 corresponding to each first through hole 15. The circumferential surface of the second through hole 18 is slidably connected to the two ends of the corresponding mounting rod 14. The inner diameter of the second through hole 18 is equal to the inner diameter of the flange 17.

[0029] With this setup, even if the cutter head 23 is aligned with the workpiece 25 (the connection line between the cutter head 23 and the workpiece 25 is parallel to the first rotating shaft 2 when the cutter head 23 is aligned with the workpiece 25), if the first pressure head 7 on the lever 6 does not push the base of the mounting rod 14, the cutter head 23 on the mounting rod 14 will not contact the workpiece 25 under the action of the spring 13. This avoids the cutter head 23 from hitting the workpiece 25 during the rotation of the cutter head seat 3 driven by the first rotating shaft 2. When machining is required, the lever 6 rotates, causing the first pressure head 7 on the lever 6 to push the mounting rod 14 towards the workpiece 25 (e.g., ...). Figure 6(As shown) Push, so that the cutter head 23 contacts the workpiece 25. The flange 17 and the stop 16 are provided to restrict the position of the spring 13. The spring 13 is provided so that the mounting rod 14 can move away from the workpiece 25 when it is not pushed by the first pressure head 7. The first through hole 15 is provided to facilitate the installation of the mounting rod 14 and the spring 13. The cover 12 is provided to prevent the spring and the stop 15 located on the mounting rod 14 from dislodging from the first through hole 15 under the action of the spring 13.

[0030] As a preferred embodiment, the cover 12 and the main housing 11 are detachably connected by bolts 19. This facilitates later maintenance and assembly during manufacturing.

[0031] As a preferred embodiment, the rotation axis of the lever 6 is perpendicular to the first rotation axis 2, and the length line of the first pressure head 7 is parallel to the rotation axis of the lever 6. The projection of the lever 6 onto the plane of the base 24 perpendicular to the first rotation axis 2 can be located at the gap between any two adjacent first through holes 15. This arrangement ensures that the lever 6 pushes only one mounting rod 14 at a time during the pushing process, preventing the pushing of both mounting rods 14.

[0032] In a preferred embodiment, the cam includes a wheel base 20 and a wheel side wall 21. The wheel base 20 is coaxially fixed on the second rotating shaft 4. The wheel side wall 21 is provided on the outer edge of one end face of the wheel base 20. The wheel side wall 21 has two V-shaped notches 22, with the closed ends of the V-shapes facing the wheel base 20 and the open ends extending to the side of the wheel side wall 21 facing away from the wheel base 20. The distance between the free end of the second pressure head 8 and the central axis of the wheel base 20 is less than the distance between the inner wall of the wheel side wall 21 and the central axis of the wheel base 20. The distance between the connection point of the second pressure head 8 and the lever 6 and the central axis of the wheel base 20 is greater than the distance between the connection point of the second pressure head 8 and the lever 6 and the central axis of the wheel base 20. The distance from the outer wall of the wheel side wall 21 to the central axis of the wheel bottom 20, when the second pressure head 8 contacts the V-shaped inner bottom wall of the notch 22 and the spring 13 is in its normal state, the projection of the first pressure head 7 on the central axis of the first rotating shaft 2 is away from or in contact with the projection of the end of the mounting rod 14 facing the lever 6 on the central axis of the first rotating shaft 2; when the second pressure head 8 contacts the side of the wheel side wall 21 facing away from the wheel bottom 20 and the spring 13 is in a compressed state, the projection of the first pressure head 7 on the central axis of the first rotating shaft 2 contacts the projection of the end of the mounting rod 14 facing the lever 6 on the central axis of the first rotating shaft 2. With this setup, when the second pressure head 8 is at the notch 22, the second pressure head 8 will not be pushed, thus preventing the lever 6 from rotating. Therefore, the mounting rod 14 will move away from the workpiece 25 under the action of the spring 13. When the wheel bottom 20 rotates to the side wall 21 facing away from the wheel bottom 20 and abutting against the second pressure head 8, the lever 6 will rotate, causing the first pressure head 7 at the other end of the lever 6 to push the mounting rod 14 toward the workpiece 25. This allows the mounting rod 14 to overcome the elastic force of the spring 13 and move toward the workpiece 25, thereby making the cutting head 23 on the mounting rod 14 contact the workpiece 25 and realize the processing of the workpiece 25.

Claims

1. A blade switching device, characterized in that, The device includes a frame (1), on which a cutter head seat (3) is provided via a first rotating shaft (2). A cutter head mount is provided on the cutter head seat (3) at a distance away from the first rotating shaft (2) via an elastic element. A second rotating shaft (4) is provided on the frame (1) at a distance away from the cutter head seat (3). The second rotating shaft (4) is parallel to the first rotating shaft (2). A cam is provided on the second rotating shaft (4). A mounting post (5) is provided on the frame (1) between the first rotating shaft (2) and the second rotating shaft (4). The mounting post (5) is located on the side of the cutter head seat (3) facing the bottom of the cutter head mount. The two ends of a lever (6) are rotatably mounted on the mounting post (5). A first pressure head (7) is provided radially at one end of the lever (6), and a second pressure head (8) is provided radially at the other end. The first pressure head (7) and the second pressure head (8) are parallel. During the rotation of the first rotating shaft (2), the first pressure head (7) can abut against one end of the cutter head mounter, and the second pressure head (8) abuts against the control surface on the cam; During the rotation of the second rotating shaft (4), the second rotating shaft (4) can drive the control surface on the cam to abut against the second pressure head (8) to control the lever (6) to rotate, thereby enabling the first pressure head (7) to squeeze or move away from the cutter head mounter.

2. The blade switching device according to claim 1, characterized in that, It also includes a first motor (9) and a second motor (10), wherein the first motor (9) is driven to the first rotating shaft (2), and the second motor (10) is driven to the second rotating shaft (4).

3. The blade switching device according to claim 1, characterized in that, The cutter head holder (3) includes a seat body (24), a main housing (11), and a cover (12). The elastic element is a spring (13). The cutter head mount includes several mounting rods (14). The seat body (24) is fixedly mounted on the first rotating shaft (2). The main housing (11) is mounted on the seat body (24) away from the first rotating shaft (2). The main housing (11) has several first through holes (15) around the first rotating shaft (2). The axis of each first through hole (15) is parallel to the first rotating shaft (2). One first through hole (15) passes through the two ends of one mounting rod (14). A stop (16) is radially provided between the two ends of each mounting rod (14) within the first through hole (15). A flange (17) is coaxially provided on the side of the first through hole (15) facing away from the first pressure head (7). The two ends of the mounting rod (14) are slidably connected to the inner surface of the flange (17). Each mounting rod (14) is fitted with a spring (13) in the corresponding first through hole (15) and between the flange (17) and the stop block (16). The cover (12) covers the side of the main housing (11) facing the first pressure head (7). A second through hole (18) is coaxially provided on the cover (12) corresponding to each first through hole (15). The circumferential surface of the second through hole (18) is slidably connected to the two ends of the corresponding mounting rod (14). The inner diameter of the second through hole (18) is equal to the inner diameter of the flange (17).

4. The blade switching device according to claim 3, characterized in that, The cover (12) and the main housing (11) are detachably connected by bolts (19).

5. A blade switching device according to claim 3, characterized in that, The rotation axis of the lever (6) is perpendicular to the first rotation axis (2), the length line of the first pressure head (7) is parallel to the rotation axis of the lever (6), and the projection of the lever (6) on the plane of the base (24) perpendicular to the first rotation axis (2) can be located at the gap between any two adjacent first through holes (15).

6. The blade switching device according to claim 3, characterized in that, The cam includes a wheel base (20) and a wheel side wall (21). The wheel base (20) is coaxially fixed on the second rotating shaft (4). The wheel side wall (21) is provided on the outer edge of one end face of the wheel base (20). The wheel side wall (21) is provided with two V-shaped notches (22). The closed end of the V-shape faces the wheel base (20), and the open end of the V-shape extends to the side of the wheel side wall (21) facing away from the wheel base (20). The distance between the free end of the second pressure head (8) and the central axis of the wheel base (20) is less than the distance from the inner wall of the wheel side wall (21) to the central axis of the wheel base (20). The distance from the connection point of the second pressure head (8) and the lever (6) to the central axis of the wheel base (20) is greater than the distance from the wheel side wall. The distance from the outer wall of (21) to the central axis of the wheel bottom (20), when the second pressure head (8) contacts the V-shaped inner bottom wall of the notch (22) and the spring (13) is in the normal state, the projection of the first pressure head (7) on the central axis of the first rotating shaft (2) is away from or in contact with the projection of the end of the mounting rod (14) facing the lever (6) on the central axis of the first rotating shaft (2); when the second pressure head (8) contacts the side of the wheel side wall (21) facing away from the wheel bottom (20) and the spring (13) is in the compressed state, the projection of the first pressure head (7) on the central axis of the first rotating shaft (2) contacts the projection of the end of the mounting rod (14) facing the lever (6) on the central axis of the first rotating shaft (2).

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