Machine head angle adjusting mechanism of cutting tool

Abstract

The utility model discloses a machine head angle adjusting mechanism of a cutting tool, which comprises a supporting seat, a machine head of the supporting seat and a locking disc, the locking disc is fixedly connected with the supporting seat, the locking disc is provided with a plurality of locking holes which are arranged at intervals and have specific angles, the machine head is internally provided with a containing hole for a locking pin to stretch and retract back and forth, and an elastic piece is arranged in the containing hole. The rear end of the locking pin is in linkage with the transmission mechanism through the linkage mechanism, the locking switch is in transmission connection with the locking block through the transmission mechanism, and when the locking switch swings in a reciprocating mode, the transmission mechanism drives the locking block to move between the locking disc clamping position and the locking disc loosening position in a reciprocating mode. The locking pin can move in a reciprocating mode between the position where the locking pin is inserted into the locking hole or the position where the locking pin is separated from the locking hole through cooperation of the linkage mechanism and the elastic piece, and therefore automatic locking and unlocking of the machine head and the supporting base at a specific angle are achieved. The machine head angle adjusting mechanism is convenient and fast to operate and good in locking effect.

Description

Technical Field

[0001] This utility model relates to the technical field of cutting tools, and in particular to a cutting tool head angle adjustment mechanism. Background Technology

[0002] A miter saw primarily uses a high-speed rotating saw blade to effectively cut various materials, such as metal, wood, and plastic. The angled design of the saw blade allows sawdust to be smoothly discharged during the cutting process, thus ensuring cutting efficiency and quality. A miter saw is a type of table saw capable of cutting at a certain angle, typically consisting of a rotating, tilting cutting mechanism and a rotating worktable.

[0003] Existing miter saws include a base, a worktable mounted on the base, and a cutting device located above the worktable. A support base is located at the rear of the worktable. The cutting device includes a head that is pivotally connected to the support base, a guide rail assembly slidably mounted on the head, a connector connected to the front end of the guide rail assembly, and a cutting component pivotally connected to the connector. The head of the cutting device needs to be locked after pivoting relative to the support base. In existing technology, the head locking structure of the cutting device is relatively complex, and the locking method is relatively simple, thus affecting the user experience. Utility Model Content

[0004] The purpose of this invention is to provide a cutting tool head angle adjustment mechanism that allows for specific and arbitrary angle adjustments of the cutting head using the same locking switch. It is convenient, quick to operate, and has a good locking effect.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cutting tool head angle adjustment mechanism, including a support base disposed at the rear end of the worktable, a cutting head swayably connected to the support base, and a locking disc disposed between the cutting head and the support base. The locking disc is fixedly connected to the support base and also includes a locking block, a locking pin, a transmission mechanism, a linkage mechanism, and a locking switch. The locking disc has multiple locking holes spaced apart at specific angles, which are disposed on the swing trajectory of the locking pin. The cutting head has a receiving hole for the locking pin to extend and retract back and forth. An elastic element is disposed in the receiving hole to drive the locking pin to move in the direction of insertion into the locking hole. The rear end of the locking pin is linked to the transmission mechanism through the linkage mechanism. The locking switch is driven to the locking block through the transmission mechanism. When the locking switch swings back and forth, the transmission mechanism drives the locking block to move back and forth between the position of clamping the locking disc and the position of releasing the locking disc, thereby realizing the locking and unlocking of the cutting head and the support base at any angle. The locking pin can move back and forth between the position of insertion into the locking hole and the position of release from the locking hole through the cooperation of the linkage mechanism and the elastic element, thereby realizing the automatic locking and unlocking of the cutting head and the support base at a specific angle.

[0006] Furthermore, the locking switch can switch between a first position, a second position, and a third position, with the second position being between the first and third positions. When the locking switch is pressed to the first position, the machine head and the support base are in an unlocked state, at which time the machine head can swing at any angle relative to the support base. After releasing the locking switch pressed to the first position, when the operator swings the machine head to the desired specific angle, the locking pin can automatically insert into the locking hole opposite to the locking disc under the action of the elastic element, at which time the machine head and the support base achieve automatic locking at a specific angle. When the locking switch is pressed to the third position, the locking block moves to the position of clamping the locking disc, at which time the machine head and the support base are locked together as one unit through the locking block and the locking disc.

[0007] Furthermore, the transmission mechanism includes a rotating shaft, a first bevel gear, a second bevel gear, and a screw. The rotating shaft is rotatably disposed inside the machine head. A locking switch is fixedly connected to the end of the rotating shaft. The first bevel gear is fixedly connected to the rotating shaft. The screw is disposed along the front-to-back direction and passes through a locking disc. The locking disc is provided with an arc-shaped clearance groove for the screw to swing left and right. The second bevel gear is fixedly connected to the screw and meshes with the first bevel gear for transmission. The front end of the screw is threadedly connected to a locking block. The locking block is anti-rotationally engaged with the support base. When the locking switch swings, it drives the screw to move the locking block between the position of clamping the locking disc and the position of releasing the locking disc, thereby realizing the locking and unlocking of the machine head and the support base.

[0008] Furthermore, the support base is provided with a limiting protrusion, and an active space is formed between the limiting protrusion and the locking disc for the locking block to move back and forth. The locking block is limited by the limiting protrusion to prevent the locking block from disengaging from the screw.

[0009] Furthermore, the linkage mechanism includes a linkage component movably sleeved on the rotating shaft, a first linkage pin fixedly connected to the rotating shaft, and a second linkage pin fixedly connected to the rear end of the locking pin. The first end of the linkage component is provided with a toggle part corresponding to the position of the first linkage pin, and the second end of the linkage component is kept in a state of abutting against the second linkage pin.

[0010] Furthermore, the second linkage pin is arranged laterally in the left-right direction. The second linkage pin abuts against the rear side of the second end of the linkage member. The linkage member has a tendency to rotate forward under the abutment of the second linkage pin. When the locking switch is switched to the first position, the first locking pin can drive the toggle part and the linkage member to rotate backward, thereby driving the locking pin to move to the position of disengaging from the locking hole.

[0011] Furthermore, when the locking switch is rotated from the second position to the first position, the first linkage pin can drive the actuating part to rotate downward, so that the linkage member drives the second linkage pin to move away from the locking disc until the locking pin is completely disengaged from the locking hole; when the locking switch pressed to the first position is released, the locking pin moves towards the direction of insertion into the locking hole under the elastic force of the elastic member, so that the second linkage pin drives the linkage member to reset. At this time, the actuating part of the linkage member drives the first linkage member to reset, thereby resetting the rotating shaft and the locking switch to the second position.

[0012] Furthermore, the cavity is provided with a stepped portion, the locking pin is provided with an abutting ring, the elastic element is sleeved on the locking pin, one end of the elastic element abuts against the stepped portion, and the other end of the elastic element abuts against the abutting ring.

[0013] Furthermore, locking switches that cooperate with the transmission mechanism are fixedly connected to both ends of the machine head.

[0014] Furthermore, the locking disc has a locking position extending upward from the support base, and multiple locking holes are spaced apart at the locking position of the locking disc along an arc-shaped trajectory.

[0015] Furthermore, a scale is fixedly connected to the upper end of the support base, and a pointer that works in conjunction with the scale is provided on the machine head.

[0016] In summary, this utility model has the following beneficial effects: This utility model uses the same locking switch to adjust the machine head to a specific angle (common working angle) and any angle, making it more versatile, convenient and quick to operate, and with a good locking effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cutting tool.

[0018] Figure 2 This is a schematic diagram of the installation position structure of the locking disc of this utility model.

[0019] Figure 3 This is a schematic diagram of the locking disc of this utility model.

[0020] Figure 4 This is a structural schematic diagram of the locking mechanism of this utility model.

[0021] Figure 5 This is a schematic diagram of the transmission mechanism and linkage mechanism of this utility model.

[0022] Figure 6 This is an exploded view of the transmission mechanism and linkage mechanism of this utility model.

[0023] In the diagram: 10. Base; 20. Workbench; 21. Support base; 211. Limiting protrusion; 212. Movement space; 213. Dial; 30. Cutting device; 31. Machine head; 311. Elastic element; 312. Pointer; 32. Guide rail assembly; 33. Cutting assembly; 40. Locking mechanism; 41. Locking disc; 411. Locking hole; 412. Arc-shaped clearance groove; 42. Locking block; 43. Locking pin; 44. Transmission mechanism; 441. Rotating shaft; 442. First bevel gear; 443. Second bevel gear; 444. Screw; 45. Linkage mechanism; 451. Linkage element; 4511. Actuating part; 452. First linkage pin; 453. Second linkage pin; 46. Locking switch. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] For ease of explanation of the technical solution of this utility model, the following are also defined: Figure 1 The middle arrows indicate up, down, forward, backward, left, and right. In this implementation, up, down, left, right, forward, and backward all refer to... Figure 1 Take the state of the cutting tool in the image as an example.

[0026] like Figures 1-6 As shown, the cutting tool, specifically a miter saw, includes a base 10, a worktable 20 mounted on the base 10, and a cutting device 30 located above the worktable 20. A support base 21 is provided at the rear end of the worktable 20. The cutting device 30 includes a head 31 swayably connected to the support base 21, a guide rail assembly 32 slidably mounted on the head 31, a connector connected to the front end of the guide rail assembly 32, and a cutting component 33 pivotally connected to the connector.

[0027] The cutting tool head angle adjustment mechanism of this utility model includes a support base 21 disposed at the rear end of the worktable 20, a cutting head 31 swayably connected to the support base 21, and a locking disc 41 disposed between the cutting head 31 and the support base 21. Specifically, the cutting head 31 is rotatably connected to the support base 21 through a connecting shaft, that is, the cutting head 31 can swing left and right around the connecting shaft, thereby realizing the left and right swing of the cutting device 30 relative to the worktable 20.

[0028] The locking disc 41 is fixedly connected to the support base 21. The locking disc 41 is also the brake disc. The locking disc 41 has a locking position that extends upward from the support base 21. Specifically, the front end of the locking disc 41 is attached to the support base 21, and the rear end of the locking disc 41 is attached to the machine head 31.

[0029] The head angle adjustment mechanism also includes a locking block 42, a locking pin 43, a transmission mechanism 44, a linkage mechanism 45, and a locking switch 46. The locking block 42 has locking teeth on the side facing the locking disc 41. The locking disc 41 can be clamped by the locking teeth to achieve locking. The locking disc 41 is provided with multiple locking holes 411 spaced apart and with specific angles. The locking holes 411 are set on the swing trajectory of the locking pin 43. The multiple locking holes 411 are spaced apart in an arc shape with the connecting shaft as the center. Specifically, the positions of the locking holes 411 are all set within the rotation path of the locking pin 43. The angle between the connecting line formed by the center of the locking hole 411 and the center of the connecting shaft and the vertical line includes, but is not limited to, -45°, -33.9°, -22.5°, 0°, 22.5°, 33.9°, and 45°. Of course, other specific angles can be designed as needed.

[0030] The machine head 31 is provided with a receiving hole for the locking pin 43 to extend and retract. The receiving hole serves as a guide and limiter to ensure that the locking pin 43 can only extend and retract along the length direction of the receiving hole. The receiving hole is provided with an elastic element 311 that drives the locking pin 43 to move toward the insertion of the locking hole 411. The rear end of the locking pin 43 is linked to the transmission mechanism 44 through the linkage mechanism 45. The locking switch 46 is connected to the locking block 42 through the transmission mechanism 44. When the locking switch 46 swings back and forth, the transmission mechanism 44 drives the locking block 42 to move back and forth between the clamping locking plate position and the unlocking locking plate position, thereby realizing the locking and unlocking of the machine head 31 and the support base 21 at any angle. The locking pin 43 can move back and forth between the insertion of the locking hole position and the release of the locking hole position through the cooperation of the linkage mechanism 45 and the elastic element 311, thereby realizing the automatic locking and unlocking of the machine head 31 and the support base 21 at a specific angle.

[0031] The locking switch 46 can switch between a first position, a second position, and a third position. The second position is between the first and third positions. In this invention, the first position is when the locking switch 46 swings to its rearmost position, and the third position is when the locking switch 46 swings to its frontmost position. When the locking switch 46 is pressed to the first position, the machine head 31 and the support base 21 are in an unlocked state. At this time, the machine head 31 can swing at any angle relative to the support base 21. After releasing the locking switch 46 pressed to the first position, when the operator swings the machine head 31 to the desired specific angle, the locking pin 43 can automatically insert into the locking disc 41 and its corresponding locking hole 411 under the action of the elastic element 311. At this time, the machine head 31 and the support base 21 achieve automatic locking at a specific angle. When the locking switch 46 is pressed to the third position, the locking block 42 moves to the position of clamping the locking disc. At this time, the machine head 31 and the support base 21 are locked together by the locking block 42 and the locking disc 41.

[0032] This invention, through the operation of the same locking switch 46, can achieve both automatic locking of the cutting head 31 and the support base 21 at a specific angle (common working angle), and locking of the cutting head 31 and the support base 21 at any position. It offers more diverse functions, more convenient operation, and high locking accuracy and effectiveness. In specific use, when the user needs to swing the cutting head 31 of the cutting device 30 to any position (including a specific angle and a position without a specific angle), simply press the locking switch 46 to the first position. At this time, the cutting head 31 is in the unlocked state, and the user can swing it to the desired position. Then, press the locking switch 46 to the third position. At this time, the locking block 42 clamps the locking disc 41, thus locking the cutting head 31 and the support base 21 together. When the user needs to... When the head 31 of the cutting device 30 swings to a specific position, the locking switch 46 only needs to be pressed to the first position. At this time, the head 31 of the cutting device 30 is in the unlocked state. After releasing the locking switch 46 pressed to the first position, the operator swings the head 31 to near the desired specific angle. When the head 31 swings slightly to a certain angle until it is directly facing the specific angle, the locking pin 43 will automatically insert into the locking hole 411 that is directly facing it under the action of the elastic element 311, thereby realizing the automatic locking function at a specific angle. In order to enhance the operational stability of the cutting device 30, after the locking pin 43 automatically locks, the user can move the locking switch 46 to the third position. The locking block 42 and the locking disc 41 work together to lock, providing a strong guarantee for the stable operation of the machine.

[0033] The transmission mechanism 44 includes a rotating shaft 441, a first bevel gear 442, a second bevel gear 443, and a screw 444. The rotating shaft 441 is rotatably disposed within the machine head 31. In this invention, the rotating shaft 441 is arranged in the left-right direction. A locking switch 46 is fixedly connected to the end of the rotating shaft 441. The first bevel gear 442 is fixedly connected to the rotating shaft 441. The screw 444 is rotatably disposed within the machine head 31 in the front-back direction, and one end of the screw passes through a locking disc 41. 1. An arc-shaped clearance groove 412 is provided for the screw 444 to swing left and right. The second bevel gear 443 is fixedly connected to the screw 444 and meshes with the first bevel gear 442 for transmission. The front end of the screw 444 is threadedly connected to the locking block 42. The locking block 42 is anti-rotationally engaged with the support base 21. When the locking switch 46 swings, it will drive the screw 444 to move the locking block 42 between the clamping locking plate position and the unlocking locking plate position, thereby realizing the locking and unlocking of the machine head 31 and the support base 21.

[0034] During the process of pressing the locking switch 46 to the first position, the rotating shaft 441 drives the screw 444 to rotate in the forward direction through the first bevel gear 442 and the second bevel gear 443. The screw 444 drives the locking block 42 to move forward until the locking block 42 moves to the position of releasing the locking disc. At this time, the locking block 42 separates from the locking disc 41, thereby unlocking the machine head 31 from the support base 21. During the process of pressing the locking switch 46 to the third position, the rotating shaft 441 drives the screw 444 to rotate in the reverse direction through the first bevel gear 442 and the second bevel gear 443. The screw 444 drives the locking block 42 to move backward until the locking block 42 moves to the position of clamping the locking disc. At this time, the locking block 42 locks with the locking disc 41, thereby locking the machine head 31 and the support base 21 into one unit.

[0035] The support base 21 is provided with a limiting protrusion 211, and a movable space 212 is formed between the limiting protrusion 211 and the locking disc 41 for the locking block 42 to move back and forth. The locking block 42 is limited by the limiting protrusion 211 to prevent the locking block 42 from disengaging from the screw 444. The movable space 212 is provided with a limiting anti-rotation surface, and the lower end of the locking block 42 abuts against the limiting anti-rotation surface, which can restrict the rotation of the locking block 42.

[0036] The linkage mechanism 45 includes a linkage component 451 movably sleeved on the rotating shaft 441, a first linkage pin 452 fixedly connected to the rotating shaft 441, and a second linkage pin 453 fixedly connected to the rear end of the locking pin 43. The first end of the linkage component 451 is provided with a toggle part 4511 corresponding to the position of the first linkage pin 452, and the second end of the linkage component 451 is kept in contact with the second linkage pin 453. Specifically, the clearance fit between the linkage 451 and the rotating shaft 441 ensures that the rotating shaft 441 does not drive the linkage 451 to rotate synchronously. Only when the rotating shaft 441 drives the first linkage pin 452 to rotate will the linkage 451 rotate through the first linkage pin 452. The second linkage pin 453 is arranged laterally in the left-right direction and abuts against the rear side of the second end of the linkage 451. The linkage 451 has a tendency to rotate forward under the abutment of the second linkage pin 453. When the locking switch 46 is switched to the first position, the first locking pin 43 can drive the toggle part 4511 and the linkage 451 to rotate backward, thereby driving the locking pin 43 to move to the position of disengaging from the locking hole through the second linkage pin 453.

[0037] When the locking switch 46 is rotated from the second position to the first position, the first linkage pin 452 can drive the toggle part 4511 to rotate downward, so that the linkage member 451 drives the second linkage pin 453 to move away from the locking disc 41 until the locking pin 43 is completely disengaged from the locking hole 411; when the locking switch 46 is released from the first position, the locking pin 43 moves towards the direction of insertion into the locking hole 411 under the elastic force of the elastic member 311, so that the second linkage pin 453 drives the linkage member 451 to reset. At this time, the toggle part 4511 of the linkage member 451 drives the first linkage member 451 to reset, so that the rotating shaft 441 and the locking switch 46 reset to the second position. In other words, regardless of the position of the locking switch 46, the second linkage pin 453 abuts against the linkage member 451. When the locking switch 46 is in the third position, the first linkage pin 452 does not contact the toggle part 4511. When the locking switch 46 is in the second position, the first linkage pin 452 does not contact or just contacts the toggle part 4511. At this time, the locking pin 43 is inserted into the locking hole 411. When the locking switch 46 switches from the second position to the first position, the first linkage pin 452 will drive the toggle lever to rotate downward. Thus, the linkage member 451 and the second linkage pin 453 cooperate to overcome the elastic force of the elastic member 311 and completely pull the locking pin 43 out of the locking hole 411. Since the locking pin 43 is disengaged from the locking hole 411, the cutting device 30 is in the unlocked state.

[0038] The cavity is provided with a stepped portion, the locking pin 43 is provided with an abutting ring, and the elastic element 311 is sleeved on the locking pin 43. One end of the elastic element 311 abuts against the stepped portion, and the other end of the elastic element 311 abuts against the abutting ring. Through this arrangement, the locking pin 43 always has a tendency to move towards the insertion locking hole 411 under the action of the elastic element 311.

[0039] The two ends of the machine head 31 are respectively fixedly connected to locking switches 46 that cooperate with the transmission mechanism 44. Specifically, the two ends of the machine head 31 corresponding to the rotating shaft 441 are respectively fixedly connected to a locking switch 46. With this setting, the user can swing one of the locking switches 46 to lock and unlock the machine head 31, which is convenient for the operator to use flexibly.

[0040] The locking disc 41 has a locking position that extends upward from the support base 21, and multiple locking holes 411 are distributed at intervals along an arc-shaped trajectory at the locking position of the locking disc 41.

[0041] The upper end of the support base 21 is fixedly connected to a dial 213. In this utility model, the dial 213 is a shell-shaped structure, which is set at the upper end of the support base 21 to cover the locking disc, locking position, locking pin 43, locking block 42, etc. The machine head 31 is provided with a pointer 312 that works with the dial 213. The dial 213 can help the operator to intuitively observe the angle of the left and right swing of the machine head 31 relative to the support base 21, that is, the angle of the left and right swing of the cutting device 30 relative to the worktable 20.

[0042] In summary, the present invention has the following beneficial effects: the present invention can use the same locking switch 46 to adjust the machine head 31 to a specific angle (common working angle) and to any angle, making the functions more diverse, the operation more convenient and quick, and the locking effect better.

[0043] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A cutting tool head angle adjustment mechanism, comprising a support base (21) disposed at the rear end of a worktable (20), a cutting head (31) swayably connected to the support base (21), and a locking disc (41) disposed between the cutting head (31) and the support base (21), the locking disc (41) being fixedly connected to the support base (21), characterized in that: It also includes a locking block (42), a locking pin (43), a transmission mechanism (44), a linkage mechanism (45), and a locking switch (46). The locking disc (41) is provided with multiple locking holes (411) spaced apart and at specific angles. The locking holes (411) are set on the swing trajectory of the locking pin (43). The machine head (31) is provided with a receiving hole for the locking pin (43) to extend and retract. The receiving hole is provided with an elastic element (311) that drives the locking pin (43) to move toward the direction of insertion into the locking hole (411). The rear end of the locking pin (43) is linked to the transmission mechanism (44) through the linkage mechanism (45). The locking switch (46) is connected to the locking block (42) via the transmission mechanism (44). When the locking switch (46) swings back and forth, the locking block (42) is driven to move back and forth between the clamping and releasing positions of the locking disc via the transmission mechanism (44), thereby realizing the locking and unlocking of the machine head (31) and the support base (21) at any angle. The locking pin (43) can move back and forth between the insertion position and the release position of the locking hole via the linkage mechanism (45) and the elastic element (311), thereby realizing the automatic locking and unlocking of the machine head (31) and the support base (21) at a specific angle.

2. The head angle adjustment mechanism of a cutting tool according to claim 1, characterized in that: The locking switch (46) can switch between a first position, a second position, and a third position. The second position is between the first and third positions. When the locking switch (46) is pressed to the first position, the machine head (31) and the support base (21) are in an unlocked state. At this time, the machine head (31) can swing at any angle relative to the support base (21). After the locking switch (46) is released from the first position, when the operator swings the machine head (31) to the required specific angle, the locking pin (43) can be automatically inserted into the locking plate (41) and its corresponding locking hole (411) under the action of the elastic element (311). At this time, the machine head (31) and the support base (21) achieve automatic locking at a specific angle. When the locking switch (46) is pressed to the third position, the locking block (42) moves to the position of clamping the locking plate. At this time, the machine head (31) and the support base (21) are locked together by the locking block (42) and the locking plate (41).

3. The head angle adjustment mechanism of a cutting tool according to claim 2, characterized in that: The transmission mechanism (44) includes a rotating shaft (441), a first bevel gear (442), a second bevel gear (443), and a screw (444). The rotating shaft (441) is rotatably disposed inside the machine head (31). A locking switch (46) is fixedly connected to the end of the rotating shaft (441). The first bevel gear (442) is fixedly connected to the rotating shaft (441). The screw (444) is disposed in the front-back direction and passes through the locking disc (41). The locking disc (41) is provided with an arc for the screw (444) to swing left and right. The machine head (31) has a relief groove (412). The second bevel gear (443) is fixedly connected to the screw (444) and meshes with the first bevel gear (442) for transmission. The front end of the screw (444) is threadedly connected to the locking block (42). The locking block (42) is anti-rotationally engaged with the support base (21). When the locking switch (46) swings, it will drive the screw (444) to move the locking block (42) between the clamping locking plate position and the unlocking locking plate position, thereby realizing the locking and unlocking of the machine head (31) and the support base (21).

4. The head angle adjustment mechanism of a cutting tool according to claim 2, characterized in that: The support base (21) is provided with a limiting protrusion (211). A movable space (212) for the locking block (42) to move back and forth is formed between the limiting protrusion (211) and the locking disc (41). The locking block (42) is limited by the limiting protrusion (211) to prevent the locking block (42) from disengaging from the screw (444).

5. The head angle adjustment mechanism of a cutting tool according to claim 2, characterized in that: The linkage mechanism (45) includes a linkage component (451) movably sleeved on the rotating shaft (441), a first linkage pin (452) fixedly connected to the rotating shaft (441), and a second linkage pin (453) fixedly connected to the rear end of the locking pin (43). The first end of the linkage component (451) is provided with a toggle part (4511) corresponding to the position of the first linkage pin (452), and the second end of the linkage component (451) is kept in a state of abutting against the second linkage pin (453).

6. The head angle adjustment mechanism of a cutting tool according to claim 5, characterized in that: The second linkage pin (453) is arranged laterally in the left-right direction. The second linkage pin (453) abuts against the rear side of the second end of the linkage member (451). The linkage member (451) has a tendency to rotate forward under the abutment of the second linkage pin (453). When the locking switch (46) is switched to the first position, the first locking pin (43) can drive the toggle part (4511) and the linkage member (451) to rotate backward, thereby driving the locking pin (43) to move to the position of disengaging from the locking hole.

7. The head angle adjustment mechanism of a cutting tool according to claim 6, characterized in that: When the locking switch (46) is rotated from the second position to the first position, the first linkage pin (452) can drive the actuating part (4511) to rotate downward, so that the linkage member (451) drives the second linkage pin (453) to move away from the locking disc (41) until the locking pin (43) is completely disengaged from the locking hole (411); when the locking switch (46) pressed to the first position is released, the locking pin (43) moves towards the direction of insertion into the locking hole (411) under the elastic force of the elastic member (311), so that the second linkage pin (453) drives the linkage member (451) to reset. At this time, the actuating part (4511) of the linkage member (451) drives the first linkage member (451) to reset, so that the rotating shaft (441) and the locking switch (46) reset to the second position.

8. The head angle adjustment mechanism of a cutting tool according to any one of claims 1-7, characterized in that: The two ends of the machine head (31) are respectively fixedly connected with locking switches (46) that cooperate with the transmission mechanism (44).

9. A cutting tool head angle adjustment mechanism according to any one of claims 1-7, characterized in that: The locking disc (41) has a locking position that extends upward from the support base (21), and multiple locking holes (411) are distributed at intervals along an arc-shaped trajectory at the locking position of the locking disc (41).

10. A cutting tool head angle adjustment mechanism according to any one of claims 1-7, characterized in that: The upper end of the support base (21) is fixedly connected to a dial (213), and the head (31) is provided with a pointer (312) that works in conjunction with the dial (213).

Images