Cutting Machine

Abstract

A cutting machine comprises: a fixing part, a main body and a cutting piece; the fixing part is provided with an adjustment groove, the adjustment groove comprises a plurality of slide grooves with different groove depths; the cutting machine further comprises a locking mechanism, the locking mechanism comprises a gear selection member rotating around a first axis, a pressing member moving along a second axis and a locking pin moving along a third axis, the gear selection member is provided with a groove for limiting the maximum movement position of the pressing member, the grooves are provided with a plurality of grooves at intervals along the circumference and the recessed depths of the plurality of grooves are different, the pressing member can be inserted into different grooves according to different rotation angles of the gear selection member; the locking pin is transmission-connected to the pressing member, when the pressing member is inserted into different grooves, the locking pin cooperates with different slide grooves to allow the cutting piece to pivot to different positions relative to the fixing part. With such an arrangement, the cutting machine can be conveniently and quickly adjusted to different cutting depth modes.

Description

[Technical field]

[0001] The present invention relates to the technical field of electric tools, and in particular to a cutting machine which can be conveniently and quickly adjusted to different cutting depth modes. [Background Technology]

[0002] A related art provides a cutting machine, which includes a fixing portion and a cutting member that can pivot relative to the fixing portion. When in use, the fixing portion is fixed relative to a workpiece, and then the workpiece is cut by the cutting member. The cutting machine has different modes. In different cutting depth modes, the cutting member pivots at different angles relative to the fixing portion, so that the cutting member can cut different depths on the workpiece.

[0003] However, the cutting machine in the related art is inconvenient to operate when switching between different modes, and has problems such as complex parts and inability to quickly switch modes. [Summary of the invention]

[0004] The present invention provides a cutting machine to solve the problem of how to conveniently switch the cutting depth mode of the cutting machine.

[0005] The present invention provides a cutting machine, comprising a fixed part, a main body pivotally connected to the fixed part, and a cutting member connected to the main body, wherein the fixed part is provided with an adjustment groove, the adjustment groove comprises a plurality of slide grooves, and the groove depths of the plurality of slide grooves are mutually different. The cutting machine also comprises a locking mechanism, the locking mechanism comprises a gear selection member rotating around a first axis, a pressing member moving along a second axis, and a locking pin moving along a third axis, the gear selection member is provided with a groove for limiting the maximum movement position of the pressing member, a plurality of grooves are provided circumferentially spaced around the first axis, the recessed depths of the plurality of grooves are mutually different, the pressing member is inserted into different grooves according to different rotation angles of the gear selection member; the locking pin is transmission-connected to the pressing member, and when the pressing member is inserted into different grooves, the pressing member has different maximum movement positions, and the locking pin cooperates with different slide grooves to allow the cutting member to pivot to different positions relative to the fixed part.

[0006] The above-mentioned cutting machine can allow the cutting member to pivot to different positions relative to the fixing part by inserting the pressing member into different grooves of the gear selection member, that is, change the cutting depth mode of the cutting machine. Since the gear selection member only needs to be rotated and the pressing member is inserted into the corresponding groove when switching the mode, the cutting machine can be conveniently and quickly adjusted to different cutting depth modes.

[0007] In one embodiment, the second axis is arranged parallel to the first axis, that is, the pressing member is movably arranged on the main body along the extension direction of the first axis, and the recessed direction of the groove is parallel to the first axis.

[0008] In one embodiment, the locking mechanism also includes a lever that rotates around a fourth axis, one end of the lever is transmission-connected to the pressing piece, and the other end of the lever is connected to the locking pin; the lever is constructed so that when the pressing piece is inserted into any groove, the lever is driven by the pressing piece to rotate around the fourth axis to drive the locking pin to move relative to the main body, so that when the pressing piece abuts against the bottom surface of any groove, the locking pin can be slidably engaged with the bottom surface of the corresponding sliding groove; the fourth axis is not arranged in parallel with the third axis.

[0009] In one embodiment, the lever includes a first rotating arm and a second rotating arm respectively arranged on both sides of the fourth axis; the pressing piece abuts against an end of the first rotating arm away from the second rotating arm to transmit the movement of the pressing piece to the lever; and an end of the second rotating arm away from the first rotating arm abuts against the locking pin to drive the locking pin to move toward a side of the groove bottom surface away from the sliding groove.

[0010] In one embodiment, the locking mechanism also includes a locking pin reset spring, which elastically presses between the main body and the locking pin, and applies an elastic force to the locking pin toward the bottom surface of the groove close to the slide groove; the third axis is arranged perpendicular to the plane where the cutting piece is located.

[0011] In one embodiment, the second axis is arranged parallel to the plane where the cutting member is located; the pressing member and the lever are connected in transmission via an inclined wedge structure.

[0012] In one embodiment, the adjustment groove extends along an arc or a straight line, a plurality of slide grooves are distributed along the extension direction of the adjustment groove, and the groove depths of different slide grooves decrease successively from one end to the other end of the adjustment groove.

[0013] In one of the embodiments, the end of at least one slide groove is recessed to form a limiting hole; the locking pin can extend into and be limited in the limiting hole.

[0014] In one embodiment, the cutting machine also includes a driving mechanism for rotationally driving the cutting member, a switch electrically connected to the driving mechanism, and a trigger for triggering or releasing the switch; the trigger has a use position and a safety position, the trigger can freely trigger the switch in the use position, and the trigger cannot trigger the switch in the safety position; when the pressing member is outside the groove, the pressing member abuts against the trigger to limit the trigger to the safety position; when the pressing member is stuck in at least one groove, the pressing member deviates from the trigger to allow the trigger to switch from the safety position to the use position.

[0015] In one of the embodiments, the fixing portion includes a base plate placed above the workpiece and a shield vertically fixed to the base plate, a spring is provided between the main body and the base plate, and the spring biases the main body in a direction away from the base plate; the adjustment groove includes three slide grooves, the three slide grooves are respectively a first slide groove, a second slide groove and a third slide groove, the first slide groove, the second slide groove and the third slide groove are connected downward in sequence and the groove depth decreases in sequence; the cutting machine has a slotting mode, a cutting piece replacement mode and a maximum cutting depth mode; in the slotting mode, the locking pin is slidably connected to the first slide groove; in the cutting piece replacement mode, the locking pin is slidably connected to the second slide groove; in the maximum cutting depth mode, the locking pin is slidably connected to the third slide groove; wherein, in the initial position, the cutting piece is accommodated in the shield, and in the slotting mode, the cutting piece replacement mode and the maximum cutting depth mode, the distance that the cutting piece protrudes from the base plate gradually increases. [Drawings]

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic structural diagram of a cutting machine in one embodiment of the present invention.

[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the cutting machine in the illustrated embodiment in the initial position.

[0019] Figure 3 for Figure 1 Schematic diagram of the positions of the cutting machine in the illustrated embodiment in the initial position, the slotting mode, the cutting element replacement mode and the maximum cutting depth mode.

[0020] Figure 4 for Figure 1 A schematic diagram of a portion of the structure of the fixing portion in the illustrated embodiment.

[0021] Figure 5 for Figure 1 A schematic diagram of the partial structure of the fixing portion in the illustrated embodiment from another viewing angle.

[0022] Figure 6 for Figure 4 A partial cross-sectional view of the fixing portion along line AA in the illustrated embodiment.

[0023] Figure 7 for Figure 1 A schematic diagram of the structure of the locking mechanism, switch and trigger in the safe position in the illustrated embodiment.

[0024] Figure 8 for Figure 1 A schematic diagram of the structure of the gear selection member in the illustrated embodiment.

[0025] Fig. 9 for Figure 1 A schematic diagram of the structure of the gear selection member in the illustrated embodiment from another viewing angle.

[0026] Fig.10 for Figure 1 Front view of the gear selector in the illustrated embodiment.

[0027] Fig.11 for Fig.10 A cross-sectional view of the gear selection member along line BB in the illustrated embodiment.

[0028] Fig.12 for Fig.10 A cross-sectional view of the gear selection member along line CC in the illustrated embodiment.

[0029] Fig.13 for Figure 1 A schematic structural diagram of the pressing member in the illustrated embodiment.

[0030] Fig.14 for Figure 1 A schematic diagram of the structure of the lever in the illustrated embodiment.

[0031] Fig.15 for Figure 1 A schematic diagram of the structure of the lever in the illustrated embodiment from another perspective.

[0032] Fig.16 for Figure 1 A schematic diagram of the structure of the trigger in the illustrated embodiment.

[0033] Fig.17 for Figure 1 A schematic diagram of the internal structure of the cutting machine in the illustrated embodiment in the initial position.

[0034] Fig.18 for Fig.17 A cross-sectional view of the cutting machine along line DD in the illustrated embodiment.

[0035] Fig.19 for Figure 1 Schematic diagram of the internal structure of the cutting machine in the embodiment shown in the slotting mode.

[0036] Fig. 20 for Fig.19 A cross-sectional view of the cutting machine along line EE in the illustrated embodiment.

[0037] Fig.21 for Figure 1A schematic diagram of the internal structure of the cutting machine in the illustrated embodiment in a cutting element replacement mode.

[0038] Fig. 22 for Fig.21 A cross-sectional view of the cutting machine at line FF in the illustrated embodiment.

[0039] Fig.23 for Fig.21 The cutting machine in the illustrated embodiment is a cross-sectional view when the cutting element is replaced.

[0040] Fig.24 for Figure 1 The internal structure diagram of the cutting machine in the embodiment shown is in the maximum cutting depth mode.

[0041] Fig.25 for Fig.24 A cross-sectional view of the cutting machine along line GG in the illustrated embodiment.

[0042] Description of main component symbols:

[0043] Cutting machine-100; fixing part-10; adjusting groove-11; sliding groove-111; first sliding groove-111a; second sliding groove-111b; third sliding groove-111c; limiting hole-112; first limiting hole-112a; second limiting hole-112b; bottom plate-12; shield-13; stopper movable groove-14; main body-20; handle shell-22; cutting member-30; locking mechanism-40; gear selection member-41; groove-411; pressing member-42; trigger abutment part-420; gear selection member abutment part -421; pressing part-423; locking pin-43; gear knob-44; lever-45; first rotating arm-451; second rotating arm-452; locking pin return spring-46; switch-50; trigger-60; pressing part abutment part-600; stopper-70; output shaft-80; shaft locking plate-81; first axis-a; second axis-b; third axis-c; fourth axis-d; fifth axis-e; initial position-W1; slotting mode-W2; cutting part replacement mode-W3; maximum cutting depth mode-W4. [Specific implementation method]

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a centered element. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be a centered element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0047] Some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0048] Figure 1 is a schematic structural diagram of a cutting machine 100 in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the cutting machine 100 in the illustrated embodiment at the initial position W1; Figure 3 for Figure 1 Schematic diagram of the positions of the cutting member 30 in the illustrated embodiment in the initial position W1, the slotting mode W2, the cutting member replacement mode W3 and the maximum cutting depth mode W4; Figure 4 for Figure 1 A schematic diagram of a portion of the structure of the fixing portion 10 in the illustrated embodiment;

[0049] Figure 5 for Figure 1 A schematic diagram of a portion of the structure of the fixing portion 10 in the illustrated embodiment at another viewing angle; Figure 6 for Figure 4 A partial cross-sectional view of the fixing portion 10 along line AA in the illustrated embodiment; Figure 7 for Figure 1 A schematic diagram of the structure of the locking mechanism 40, the switch 50 and the trigger 60 in the illustrated embodiment in a safe position; Figure 8 for Figure 1 A schematic diagram of the structure of the gear selection member 41 in the illustrated embodiment; Fig. 9 for Figure 1 A schematic diagram of the structure of the gear selection member 41 in the illustrated embodiment from another viewing angle; Fig.10 for Figure 1 A front view of the gear selector 41 in the illustrated embodiment; Fig.11 for Fig.10 A cross-sectional view of the gear selection member 41 along line BB in the illustrated embodiment;

[0050] Fig.12 for Fig.10 A cross-sectional view of the gear selection member 41 along line CC in the illustrated embodiment; Fig.13 for Figure 1 A schematic structural diagram of the pressing member 42 in the illustrated embodiment.

[0051] See also Figures 1 to 3 The present embodiment provides a cutting machine 100 , including a fixing portion 10 , a main body portion 20 pivotally connected to the fixing portion 10 , and a cutting member 30 (such as a saw blade) connected to the main body portion 20 .

[0052] like Figures 4 to 6 As shown, the fixing part 10 is provided with an adjustment groove 11, and the adjustment groove 11 includes a plurality of slide grooves 111, and the groove depths of the plurality of slide grooves 111 are not equal to each other. The fixing part 10 is shown by taking the bottom plate 12 and the shield 13 as an example, and the adjustment groove 11 is provided on the depth gauge on the side of the shield 13 (see Figure 5 ) on, the depth gauge is fixedly connected to the shield 13 by screws.

[0053] Combination Figures 7 to 9 As shown, the main body 20 is provided with a locking mechanism 40, which includes a gear selection member 41 rotating around a first axis a, a pressing member 42 moving along a second axis b, and a locking pin 43 moving along a third axis c. Figures 10 to 12 As shown, the gear selection member 41 is provided with a limiting pressing member 42 (see Fig.13 ), a plurality of grooves 411 are arranged at intervals along the circumferential direction, and the recessed depths of the plurality of grooves 411 are different from each other, and the pressing member 42 can be inserted into different grooves 411 according to different rotation angles of the gear selection member 41. The locking pin 43 is transmission-connected to the pressing member 42, and when the pressing member 42 is inserted into different grooves 411, the locking pin 43 is matched with different slide slots 111 to allow the cutting member 30 to pivot to different positions relative to the fixing portion 10.

[0054] Specifically, in the above-mentioned cutting machine 100, the main body 20 can drive the cutting member 30 to pivot to different positions relative to the fixed part 10, so that the cutting member 30 can be in different modes, and the switching between different modes is realized through the locking mechanism 40. The fixed part 10 is provided with a plurality of slide grooves 111 with different groove depths, so that when the locking pin 43 cooperates with any one of the slide grooves 111, the locking pin 43 can be limited by the slide grooves 111, thereby limiting the position of the main body 20 and the cutting member 30 relative to the fixed part 10. In order to facilitate the locking pin 43 to switch between positions matching different slide grooves 111, a plurality of grooves 411 are provided on the gear selection member 41, and the pressing member 42 can be respectively inserted into the plurality of grooves 411, so that the pressing stroke of the pressing member 42 along the second axis b is limited by the recessed depth of the grooves 411, so that when the pressing member 42 abuts against the groove bottom surfaces of different grooves 411, the pressing member 42 drives the locking pin 43 to move along the third axis c to positions matching different slide grooves 111, thereby allowing the main body 20 to drive the cutting member 30 to pivot to different positions relative to the fixing part 10. Since a plurality of grooves 411 are arranged at intervals along the circumference of the gear selection member 41, when in use, the gear selection member 41 is rotated around the first axis a, and then the pressing member 42 is pressed into the groove 411 along the second axis b to be inserted into different grooves 411, so as to realize rapid switching of different modes, which is convenient for operation and has a simple structure.

[0055] When in use, the cutting machine 100 is first placed in the initial position W1, and then the gear selection member 41 is operated to rotate around the first axis a according to the need for the mode, so that the pressing member 42 is aligned with the groove 411 corresponding to the required mode, and then the pressing member 42 is pressed into the groove 411 along the second axis b until the pressing member 42 abuts against the bottom surface of the corresponding groove 411. At this time, driven by the pressing member 42, the locking pin 43 moves along the third axis c to a position that can contact the bottom surface of the corresponding slide groove 111. In this way, the main body 20 is allowed to drive the cutting member 30 to press down relative to the fixed part 10, and in the process of the main body 20 driving the cutting member 30 to press down relative to the fixed member, the locking pin 43 can slide on the bottom surface of the corresponding slide groove 111.

[0056] Alternatively, if Fig.10 As shown, the plurality of grooves 411 are evenly spaced along the circumferential direction. For example, when the number of the grooves 411 is 3, the gear selection member 41 is configured to be able to switch from a position where any groove 411 is aligned with the pressing member 42 to a position where another groove 411 is aligned with the pressing member 42 after rotating 120 degrees around the first axis a.

[0057] In some embodiments, Figure 3As shown, the locking mechanism 40 also includes a gear knob 44, which is arranged outside the main body 20 and coaxially arranged with the gear selector 41. The gear knob 44 is connected to the gear selector 41 and is configured to drive the gear selector 41 to rotate together. In this way, it is convenient to operate the gear knob 44 outside the main body 20, thereby driving the gear selector 41 to rotate. Optionally, the gear knob 44 is sleeved outside the gear selector 41. A gear mark is provided on the outer surface of the main body 20 to visualize the mode switching, facilitate users to quickly get started, and improve the convenience of operation. When the gear knob 44 drives the gear selector 41 to switch modes, the gear knob 44 is configured to provide sound feedback and tactile feedback.

[0058] In some embodiments, Figure 1 As shown, the second axis b is arranged parallel to the first axis a, that is, the pressing member 42 is movably arranged on the main body 20 along the extension direction of the first axis a. Figure 7 As shown, the concave direction of the groove 411 is parallel to the first axis a. In this way, it is helpful to reduce the distance between the end of the gear selector 41 away from the groove 411 and the end of the pressing member 42 away from the groove 411. For example, the end of the gear selector 41 away from the groove 411 and the end of the pressing member 42 away from the groove 411 can be located on the same side of the main body 20 along the extension direction of the first axis a, so as to facilitate the operation of the gear selector 41 to rotate and the operation of the pressing member 42 to move. Optionally, as Figure 1 As shown, the first axis a is perpendicular to the plane in which the cutting member 30 is located.

[0059] In some embodiments, Figure 1 As shown, the gear selection member 41 is away from the groove 411 (see Figure 7 ) and the end of the pressing member 42 away from the groove 411 are both located on the side of the main body 20 away from the fixing portion 10 along the extension direction of the first axis a. In other embodiments, the end of the gear selection member 41 away from the groove 411 and the end of the pressing member 42 away from the groove 411 are respectively located on opposite sides of the main body 20 along the extension direction of the first axis a (not shown in the figure).

[0060] Fig.14 for Figure 1 A schematic diagram of the structure of the lever 45 in the illustrated embodiment; Fig.15 for Figure 1 The schematic diagram of the structure of the lever 45 in the illustrated embodiment is shown in another perspective.

[0061] In some embodiments, Fig.14 and Fig.15 As shown, the locking mechanism 40 also includes a lever 45 that rotates around a fourth axis d, combined with Figure 7As shown, one end of the lever 45 is transmission-connected to the pressing member 42, and the other end of the lever 45 is connected to the locking pin 43. Specifically, the lever 45 is configured to be able to rotate around the fourth axis d driven by the pressing member 42 when the pressing member 42 is inserted into any groove 411, so as to drive the locking pin 43 to move relative to the main body 20, so that when the pressing member 42 abuts against the bottom surface of any groove 411, the locking pin 43 can be slidably engaged with the corresponding slide groove 111 (see Figure 6 ) of the groove bottom surface. The fourth axis d is not arranged in parallel with the third axis c. In this way, by setting the lever 45, the movement of the pressing member 42 is transmitted to the locking pin 43, and by setting the force arm of the pressing member 42 to be smaller than the moment of the locking pin 43, the pressing member 42 only needs to move a small distance to drive the locking pin 43 to move a large distance, thereby saving the range of movement when pressing the pressing member 42.

[0062] In some embodiments, Fig.14 and Fig.15 As shown, the lever 45 includes a first rotating arm 451 and a second rotating arm 452 respectively arranged on both sides of the fourth axis d. Figure 7 As shown, the pressing member 42 abuts against one end of the first rotating arm 451 away from the second rotating arm 452 to transmit the movement of the pressing member 42 to the lever 45, and one end of the second rotating arm 452 away from the first rotating arm 451 abuts against the locking pin 43 to drive the locking pin 43 away from the sliding groove 111 (see Figure 6 Thus, when the pressing member 42 is pressed into the groove 411 during use, the pressing member 42 pushes the first rotating arm 451 to rotate, so that the second rotating arm 452 drives the locking pin 43 to lift in a direction away from the sliding groove 111.

[0063] In some embodiments, Figure 7 As shown, the locking mechanism 40 also includes a locking pin return spring 46, which elastically abuts against the main body 20 (see Figure 3 ) and the locking pin 43, the locking pin return spring 46 applies an elastic force to the locking pin 43 toward the side of the groove bottom surface close to the slide groove 111. The third axis c is preferably arranged perpendicular to the plane where the cutting member 30 is located. In this way, when the pressing member 42 is pressed into the groove 411, the pressing member 42 drives the locking pin 43 to lift toward the side away from the slide groove 111, and when the pressing member 42 is released, that is, the force of the pressing member 42 on the locking pin 43 is released, the locking pin 43 falls toward the side close to the slide groove 111 under the elastic force of the locking pin return spring 46.

[0064] In other embodiments, the second axis b is arranged parallel to the plane where the cutting member 30 is located, and the pressing member 42 and the lever 45 are connected in transmission through an inclined wedge structure (not shown). In this way, when the user presses the pressing member 42, the inclined wedge structure provided on the pressing member 42 and / or the lever 45 converts the downward force into the rotational force of the lever 45, and the rotation axis of the lever 45, i.e., the fourth axis d, is preferably arranged to intersect with the extension direction of the first axis a. Optionally, the outer peripheral surface of the gear selection member 41 is radially recessed inward to form a groove 411, and a plurality of grooves 411 are arranged at intervals along the circumferential direction and have unequal groove depths, and the maximum pressing stroke of the pressing member 42 is limited by different grooves 411. The connection structure between the lever 45 and the locking pin 43, and the matching structure between the locking pin 43 and the fixing portion 10 are the same as those in the above embodiment, and will not be described in detail here.

[0065] It is worth noting that, although not shown in the figure, it can be seen that: in some embodiments, the lever 45 may not be provided, and the pressing direction of the pressing member 42 is set to be substantially consistent with the direction in which the locking pin 43 is lifted relative to the groove 411; when the user presses the pressing member 42, the locking pin 43 is directly lifted, that is, the locking pin 43 moves along the third axis c in a direction away from the cutting member 30.

[0066] In some embodiments, Figure 4 and Figure 5 As shown, the adjustment slot 11 extends along an arc or a straight line, and a plurality of slide slots 111 are distributed along the extension direction of the adjustment slot 11, and the slot depths of different slide slots 111 decrease in sequence from one end to the other end of the adjustment slot 11. In this way, when the locking pin 43 is matched with the slide slot 111 with a shallower slot depth, the locking pin 43 can slide on the bottom surface of the slot 111 with a shallower slot depth, and can also rotate to the position of the slide slot 111 with a deeper slot depth. Therefore, the rotation stroke of the locking pin 43 in different modes partially overlaps, which is beneficial to reducing the occupied area of ​​the adjustment slot 11 on the main body 20 and simplifying the structure of the adjustment slot 11.

[0067] Optionally, combined Figure 3 and Figure 4 As shown, along the protruding direction of the cutting member 30 relative to the fixing portion 10, the groove depth from one end to the other end of the adjusting groove 11 gradually decreases, so that when the locking pin 43 is matched with the slide groove 111 with a shallower groove depth, the cutting member 30 protrudes from the fixing portion 10 by a greater distance, and when the locking pin 43 is matched with the slide groove 111 with a deeper groove depth, the cutting member 30 protrudes from the fixing portion 10 by a smaller distance. In this way, since the locking pin 43 cannot move to the position of the slide groove 111 with a shallower groove depth when it is matched with the slide groove 111 with a deeper groove depth, the cutting member 30 is limited to a range of a smaller protruding distance.

[0068] In some embodiments, Figures 4 to 6As shown, at least one end of the slide slot 111 is concave to form a limit hole 112, and the locking pin 43 (see Figure 7 ) can be inserted into and limited in the limiting hole 112, so that the main body 20 (see Figure 3 ) cannot pivot relative to the fixing portion 10, that is, the cutting member 30 is locked relative to the fixing portion 10. For example, the limiting hole 112 can limit the cutting member 30 at the initial position W1, or limit the cutting member 30 at the cutting member replacement position W3. Optionally, the recessed depth of the limiting hole 112 is 9 mm. The aperture of the limiting hole 112 is greater than or equal to the outer diameter of the locking pin 43.

[0069] Combination Fig.13 As shown, Fig.13 for Figure 1 The schematic diagram of the structure of the pressing member 42 in the illustrated embodiment shows that the pressing member 42 is provided with a pressing portion 423 for the user to press in the direction of the second axis b, and the pressing member 42 is also provided with a gear selection member abutting portion 421 for engaging the gear selection member 41, and at another structural position, the pressing member 42 is also provided with a trigger abutting portion 420 for abutting the trigger 60. A spring (not shown) for resetting may be provided at one end of the pressing member 42 away from the pressing portion 423.

[0070] Fig.16 for Figure 1 The schematic structural diagram of the trigger 60 in the illustrated embodiment shows that the trigger 60 is illustrated as a rotary switch, that is, the trigger 60 can rotate along the fifth axis e, and the trigger 60 is provided with a pressing member abutting portion 600 for abutting the trigger abutting portion 420 .

[0071] In some embodiments, Figure 7 As shown, the cutting machine 100 further includes a driving mechanism (not shown) for rotating and driving the cutting member 30, a switch 50 electrically connected to the driving mechanism, and a trigger 60 (see Fig.16). The trigger 60 has a use position and a safety position, and the user can lock or unlock the trigger 60 through the pressing member 42. Specifically, in the use position, the trigger 60 can freely trigger the switch 50; in the safety position, the trigger 60 cannot trigger the switch 50. When the pressing member 42 is located outside the groove 411, the pressing member 42 abuts against the trigger 60 (that is, the trigger abutment portion 420 of the pressing member 42 abuts against the pressing member abutment portion 600 of the trigger 60) to limit the trigger 60 to the safety position; when the pressing member 42 is inserted into at least one groove 411, the pressing member 42 deviates from the trigger 60 to allow the trigger 60 to switch from the safety position to the use position, and the trigger can be freely triggered. During use, the trigger 60 is allowed to be unlocked from the safety position only after the pressing member 42 is pressed into the groove 411, so that the trigger 60 can be operated to trigger the switch 50, so that the driving mechanism drives the cutting member 30 to move. When the pressing member 42 is not inserted into the groove 411 , the pressing member 42 locks the trigger 60 in a safe position to prevent the driving mechanism from being activated.

[0072] In other embodiments, Figure 7 As shown, when the pressing member 42 is located outside the groove 411, the lever 45 abuts against the trigger 60 to limit the trigger 60 to the safe position. When the pressing member 42 is inserted into at least one groove 411, the pressing member 42 drives the lever 45 to rotate so that the lever 45 deviates from the trigger 60, thereby allowing the trigger 60 to switch from the safe position to the use position. In this way, the trigger 60 can be locked or unlocked by the lever 45, thereby simplifying the structure of the pressing member 42.

[0073] In some embodiments, Figure 7 As shown, the trigger 60 is rotatably disposed on the main body 20 around the fifth axis e to switch between the use position and the safety position. In other embodiments, the trigger 60 can move relative to the main body 20 to switch between the use position and the safety position.

[0074] In some embodiments, Figure 1 As shown, the driving mechanism includes a motor, and the main body 20 includes a motor housing (hidden in the figure) and a handle housing 22. The motor is arranged in the motor housing, and the output shaft 80 of the motor rotates to drive the cutting member 30. The handle housing 22 is connected to the motor housing so that the main body 20 can be driven to pivot relative to the fixed part 10 by holding the handle housing 22.

[0075] In some embodiments, Figure 1 As shown, the fixing part 10 includes a bottom plate 12 placed above the workpiece and a shield 13 vertically fixed on the bottom plate 12. A spring (not shown) is provided between the main body 20 and the bottom plate 12 to bias the main body 20 away from the bottom plate 12. Figure 4As shown, the adjustment groove 11 includes three slide grooves 111, which are respectively a first slide groove 111a, a second slide groove 111b and a third slide groove 111c. The first slide groove 111a, the second slide groove 111b and the third slide groove 111c are sequentially connected downward and the groove depths decrease sequentially.

[0076] Combination Figure 3 As shown, the cutting machine 100 has a slotting mode W2, a cutting piece replacement mode W3 and a maximum cutting depth mode W4. In the slotting mode W2, the locking pin 43 (see Figure 8 ) is slidably connected to the first slide groove 111a; in the cutting element replacement mode W3, the locking pin 43 is slidably connected to the second slide groove 111b; in the maximum cutting depth mode W4, the locking pin 43 is slidably connected to the third slide groove 111c. In the initial position W1, the cutting element 30 is accommodated in the shield 13, and in the slotting mode W2, the cutting element replacement mode W3 and the maximum cutting depth mode W4, the distance that the cutting element 30 protrudes from the bottom plate 12 gradually increases.

[0077] Thus, in the slotting mode W2, the locking pin 43 can slide on the bottom surface of the first slot 111a. Since the slot depth of the first slot 111a is the smallest, the locking pin 43 is limited in the first slot 111a by the step surface between the second slot 111b and the first slot 111a, thereby limiting the distance that the cutting member 30 protrudes from the bottom plate 12 to a smaller value range. The slotting mode W2 is used to pre-cut a shallow slot on the workpiece to prevent burrs from being generated during formal cutting.

[0078] In the cutting element replacement mode W3, the locking pin 43 can slide on the bottom surface of the second slide groove 111b. Since the groove depth of the second slide groove 111b is greater than the groove depth of the third slide groove 111c, the locking pin 43 is prevented from entering the third slide groove 111c by the step surface between the third slide groove 111c and the second slide groove 111b, so that the cutting element 30 can be limited to a position convenient for replacing the cutting element 30.

[0079] In the maximum cutting depth mode W4, the locking pin 43 can slide on the bottom surface of the third slide groove 111c, so that the cutting member 30 can protrude a greater distance from the bottom plate 12, and the main body 20 can drive the cutting member 30 to be pressed down relative to the fixed part 10 to the maximum cutting depth of the cutting machine 100.

[0080] In this embodiment, Figure 4 As shown, the groove depth of the third sliding groove 111c is 0, that is, at the maximum cutting depth position W4, the locking pin 43 is slidably connected to a side surface of the fixing portion 10 provided with the adjusting groove 11. In this way, the structure of the adjusting groove 11 is simpler.

[0081] In some other embodiments, the groove depth of the first sliding groove 111a is 7 mm, the groove depth of the second sliding groove 111b is 5 mm, and the groove depth of the third sliding groove 111c is 3 mm.

[0082] The depth of the plurality of chutes 111 and the number of the chutes 111 can be set according to the use requirements. The number of chutes 111 is equal to and corresponds to the number of grooves 411 and the number of modes. In this embodiment, the cutting machine 100 has three modes: a grooving mode W2, a cutting piece replacement mode W3, and a maximum cutting depth mode W4. In other embodiments, the cutting machine 100 may also have two or more modes.

[0083] In some embodiments, Figure 3 As shown, a stopper movable groove 14 is provided on the fixing part 10, and the cutting machine 100 also includes a stopper 70 movably provided in the stopper movable groove 14, and the stopper 70 is used to lock the cutting member 30 relative to the fixing part 10 when the cutting machine 100 is in a mode, so that the user can keep the cutting member 30 in a specific position according to the use requirements.

[0084] Next, the working processes of the grooving mode W2, the cutting piece replacement mode W3 and the maximum cutting depth mode W4 of the cutting machine 100 will be described in detail.

[0085] Fig.17 for Figure 1 A schematic diagram of the internal structure of the cutting machine 100 in the illustrated embodiment at the initial position W1; Fig.18 for Fig.17 The cutting machine 100 in the illustrated embodiment is a cross-sectional view taken along line DD.

[0086] In some embodiments, Figure 4 and Figure 6 As shown, the limiting hole 112 includes a first limiting hole 112a, and the bottom surface of the first slide groove 111a away from the second slide groove 111b is recessed inward to form the first limiting hole 112a. Fig.17 and Fig.18 As shown, in the initial position W1, the locking pin 43 extends into the first limiting hole 112a. In this way, since the depth of the first limiting hole 112a is greater than the groove depth of the first sliding groove 111a, when the locking pin 43 moves to the position of the first limiting hole 112a and the force of the pressing member 42 on the locking pin 43 is released, under the elastic force of the locking pin reset spring 46, the locking pin 43 extends into and is limited in the first limiting hole 112a, so that the main body 20 and the cutting member 30 are locked relative to the fixing part 10 at the initial position W1.

[0087] During use, when the cutting machine 100 needs to be switched from the initial position W1 to any mode, the pressing piece 42 is first inserted into the groove 411 to drive the locking pin 43 to be lifted outward from the first limiting hole 112a, thereby allowing the main body 20 to pivot relative to the fixed part 10, and according to the pressing stroke of the pressing piece 42, the locking pin 43 is lifted to a height corresponding to the pressing stroke, so that the locking pin 43 can slide on the bottom surface of the slide groove 111 of the corresponding groove depth. At this time, the cutting machine 100 is in the corresponding mode. Since the first limiting hole 112a is located in the first slide groove 111a and the groove depth of the first slide groove 111a is the deepest, when the cutting member 30 needs to return to the initial position W1 from a mode, the locking pin 43 can return to the position of the first limiting hole 112a from the matching slide groove 111. At this time, the pressing member 42 is released, so that the locking pin 43 extends into and is limited to the first limiting hole 112a under the elastic force of the locking pin return spring 46, so that the cutting member 30 is limited to the initial position W1.

[0088] It should be noted that when switching between different modes, it is necessary to first return to the initial position W1, and then rotate the gear selection member 41 again at the initial position W1 to align the pressing member 42 with another groove 411, and then press the pressing member 42 to engage the groove 411 to allow the fixing part 10 to drive the cutting member 30 to switch from the initial position W1 to another mode.

[0089] Fig.19 for Figure 1 A schematic diagram of the internal structure of the cutting machine 100 in the illustrated embodiment in the slotting mode W2; Fig. 20 for Fig.19 The cutting machine 100 in the illustrated embodiment is a cross-sectional view taken along line EE.

[0090] The cutting machine 100, as Fig.19 and Fig. 20 As shown, when it is necessary to switch to the slotting mode W2, the gear knob 44 is first adjusted to the slotting mode W2, and then the pressing member 42 is pressed to drive the lever 45 to rotate to release the trigger 60, that is, to allow the trigger 60 to switch from the safety position to the use position. When the pressing member 42 is pressed to the bottom surface of the groove 411 corresponding to the slotting mode W2, the trigger 60 can be pressed to start the driving mechanism to work. Figure 4 and Figure 6 As shown, the locking pin 43 can slide along the first slide groove 111a until it abuts against the step surface between the first slide groove 111a and the second slide groove 111b, and the cutting machine 100 can perform a slotting operation on the workpiece. After the slotting is completed, the main body 20 is first returned to the initial position W1 (see Fig.17 ), and then release the pressing member 42 to lock the cutting machine 100 at the initial position W1. It should be noted that the pressing member 42 can also be released during the slotting process.

[0091] Fig.21 for Figure 1 A schematic diagram of the internal structure of the cutting machine 100 in the illustrated embodiment in the cutting piece replacement mode W3; Fig. 22 for Fig.21 A cross-sectional view of the cutting machine 100 along line FF in the illustrated embodiment; Fig.23 for Fig.21 The cutting element 30 in the illustrated embodiment is shown in section in the replacement position.

[0092] In some embodiments, Figure 4 and Figure 5 As shown, the limiting hole 112 further includes a second limiting hole 112b, and the bottom surface of the second slide groove 111b at one end away from the first slide groove 111a is recessed inward to form the second limiting hole 112b. Figure 19 to Figure 20 As shown, in the replacement position, the locking pin 43 extends into the second limiting hole 112b. In this way, in the cutting member replacement mode W3, the locking pin 43 can slide on the bottom surface of the second slide slot 111b. When in use, when the locking pin 43 slides on the bottom surface of the second slide slot 111b to the current maximum stroke, the pressing member 42 is released, and under the elastic force of the locking pin reset spring 46, the locking pin 43 extends into and is limited to the second limiting hole 112b, thereby limiting the cutting member 30 to the replacement position. At this time, the main body 20 is locked relative to the fixing part 10, and the trigger 60 is locked in a safe position, thereby ensuring the safety when replacing the cutting member 30.

[0093] Fig.24 for Figure 1 The internal structure diagram of the cutting machine 100 in the illustrated embodiment in the maximum cutting depth mode W4; Fig.25 for Fig.24 The cutting machine 100 in the illustrated embodiment is a cross-sectional view taken along line GG.

[0094] The cutting machine 100, as Fig.24 and Fig.25 As shown, when it is necessary to switch to the maximum cutting depth mode W4, the gear knob 44 is rotated to the maximum cutting depth mode W4, and then the pressing member 42 is pressed to the current maximum stroke, that is, the pressing member 42 is pressed against the bottom surface of the corresponding groove 411. Fig. 22 and Fig.23 As shown, at this time, the locking pin 43 can be in the third sliding groove 111c (see Figure 6 ) on the bottom surface of the groove (in this embodiment, the side surface of the fixing part 10 provided with the adjustment groove 11), the cutting member 30 can cut to any depth within the range of the cutting machine 100.

[0095] The above-mentioned cutting machine 100 can allow the cutting member 30 to pivot to different positions relative to the fixing portion 10 by the operator pressing and inserting the pressing member 42 into different grooves 411 of the gear selection member 41, that is, changing the cutting depth mode of the cutting machine 100. Since the mode is switched only by rotating the gear selection member 41 and inserting the pressing member 42 into the corresponding groove 411, the cutting machine 100 can be conveniently and quickly adjusted to different cutting depth modes.

[0096] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention is described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A cutting machine, comprising a fixing portion, a main body portion pivotally connected to the fixing portion, and a cutting member connected to the main body portion, characterized in that: The fixing part is provided with an adjusting groove, and the adjusting groove includes a plurality of slide grooves, and the groove depths of the plurality of slide grooves are mutually different; the cutting machine also includes a locking mechanism, and the locking mechanism includes a gear selection member rotating around a first axis, a pressing member moving along a second axis, and a locking pin moving along a third axis, the gear selection member is provided with a groove for limiting the maximum movement position of the pressing member, and a plurality of grooves are circumferentially spaced around the first axis, and the recessed depths of the plurality of grooves are mutually different, and the pressing member is inserted into different grooves according to different rotation angles of the gear selection member; the locking pin is transmission-connected to the pressing member, and when the pressing member is inserted into different grooves, the pressing member has different maximum movement positions, and the locking pin cooperates with different slide grooves to allow the cutting member to pivot to different positions relative to the fixing part.

2. The cutting machine according to claim 1, characterized in that: The second axis is arranged in parallel with the first axis, that is, the pressing member is movably arranged on the main body along the extending direction of the first axis, and the recessed direction of the groove is parallel to the first axis.

3. The cutting machine according to claim 1 or 2, characterized in that: The locking mechanism also includes a lever rotating around a fourth axis, one end of the lever is transmission-connected to the pressing piece, and the other end of the lever is connected to the locking pin; the lever is constructed so that when the pressing piece is inserted into any one of the grooves, the lever is driven by the pressing piece to rotate around the fourth axis to drive the locking pin to move relative to the main body, so that when the pressing piece abuts against the bottom surface of any one of the grooves, the locking pin can be slidably engaged with the bottom surface of the corresponding sliding groove; the fourth axis is not arranged in parallel with the third axis.

4. The cutting machine according to claim 3, characterized in that: The lever includes a first rotating arm and a second rotating arm respectively arranged on both sides of the fourth axis; the pressing piece abuts against an end of the first rotating arm away from the second rotating arm to transmit the movement of the pressing piece to the lever; and an end of the second rotating arm away from the first rotating arm abuts against the locking pin to drive the locking pin to move toward a side away from the bottom surface of the groove of the slide groove.

5. The cutting machine according to claim 4, characterized in that: The locking mechanism also includes a locking pin reset spring, which elastically presses between the main body and the locking pin, and applies an elastic force to the locking pin toward the bottom surface of the groove close to the sliding groove; the third axis is arranged perpendicular to the plane where the cutting piece is located.

6. The cutting machine according to claim 3, characterized in that: The second axis is arranged parallel to the plane where the cutting member is located; the pressing member and the lever are transmission-connected via an inclined wedge structure.

7. The cutting machine according to claim 1 or 2, characterized in that: The adjustment groove extends along an arc or a straight line, and a plurality of the slide grooves are distributed along the extension direction of the adjustment groove, and the groove depths of different slide grooves decrease successively from one end to the other end of the adjustment groove.

8. The cutting machine according to claim 7, characterized in that: The end of at least one of the slide grooves is concave to form a limiting hole; the locking pin can extend into and be limited in the limiting hole.

9. The cutting machine according to claim 1, characterized in that: The cutting machine also includes a driving mechanism for rotationally driving the cutting member, a switch electrically connected to the driving mechanism, and a trigger for triggering or releasing the switch; the trigger has a use position and a safety position, in which the trigger can freely trigger the switch in the use position, and in the safety position the trigger cannot trigger the switch; when the pressing member is outside the groove, the pressing member abuts against the trigger to limit the trigger to the safety position; when the pressing member is inserted into at least one of the grooves, the pressing member deviates from the trigger to allow the trigger to switch from the safety position to the use position.

10. The cutting machine according to claim 1, characterized in that: The fixing part includes a base plate placed above the workpiece and a shield fixed vertically on the base plate, a spring is provided between the main body and the base plate, and the spring biases the main body in a direction away from the base plate; the adjusting slot includes three slide slots, and the three slide slots are respectively a first slide slot, a second slide slot and a third slide slot, and the first slide slot, the second slide slot and the third slide slot are connected downward in sequence and the groove depth decreases in sequence; the cutting machine has a slotting mode, a cutting piece replacement mode and a maximum cutting depth mode; in the slotting mode, the locking pin is slidably connected to the first slide slot; in the cutting piece replacement mode, the locking pin is slidably connected to the second slide slot; in the maximum cutting depth mode, the locking pin is slidably connected to the third slide slot; wherein, in the initial position, the cutting piece is accommodated in the shield, and in the slotting mode, the cutting piece replacement mode and the maximum cutting depth mode, the distance that the cutting piece protrudes from the base plate gradually increases.

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