Cutting machine

Abstract

A cutting machine comprises a bottom plate, a first angle plate, a second angle plate and a main body part, an inclination angle fast adjusting mechanism comprises a rail and an adjusting pin rotating around a second axis, the rail is arranged in a protruding mode towards the adjusting pin, the adjusting pin is provided with at least two arc-shaped grooves, and the grooves are distributed in the circumferential direction of the adjusting pin at intervals. The width of at least two grooves in the radial direction is not equal, one end of each groove is provided with an opening, the edge, in the radial direction of the groove, of each opening is provided with an abutting portion, the side face, in the thickness direction, of the track is provided with at least two protrusions in a protruding mode, the protrusions extend in the extending direction of the track, and the extending tail ends of the protrusions are provided with thickness difference faces corresponding to the abutting portions. The thickness difference surfaces of the at least two bulges are distributed in a staggered manner in the extending direction of the track; the protrusions enter the grooves through the openings, and the thickness difference faces abut against the corresponding abutting parts. The inclined cutting device has the beneficial effects that the saw blade is rapidly adjusted and positioned to different inclination angles during inclined cutting, operation is convenient and rapid, the size is small, and the space utilization rate is high.

Description

Technical Field

[0001] The present application relates to the technical field of power tools, and more particularly, to a cutting machine. Background Art

[0002] In the related art, a cutting machine is provided. The cutting machine includes a bottom plate placed on a workpiece to be cut, and a main body portion pivotally connected to the bottom plate. A saw blade is provided on the main body portion. During use, the saw blade can be tilted relative to the bottom plate by pivoting the main body portion relative to the bottom plate, so that the saw blade can perform a bevel cut on the workpiece to be cut.

[0003] However, for the cutting machine in the related art, it is difficult to quickly position the tilt angle of the saw blade relative to the bottom plate during bevel cutting. Summary of the Invention

[0004] The present application provides a cutting machine to solve the problem of how to quickly adjust and position the saw blade to different tilt angles during bevel cutting.

[0005] An embodiment of the present application provides a cutting machine, including a bottom plate placed on a workpiece to be cut, a first angle plate fixedly connected to the bottom plate, a second angle plate pivotally connected to the first angle plate, and a main body portion fixedly connected to the second angle plate. The main body portion and the second angle plate pivot relative to the first angle plate about a first axis. The cutting machine further includes a tilt angle quick adjustment mechanism. The tilt angle quick adjustment mechanism includes an adjustment pin provided on one of the first angle plate and the second angle plate, and a track provided on the other of the first angle plate and the second angle plate. The adjustment pin rotates about a second axis. An arc-shaped groove is formed in the adjustment pin. At least two grooves are provided at intervals along the circumferential direction of the adjustment pin, and the widths of at least two grooves in the radial direction thereof are not equal to each other. One end of the groove is an opening for the track to pass through, and an abutting portion is provided at the edge of the opening in the radial direction of the groove. The track protrudes towards the adjustment pin. At least two protrusions are convexly provided on the side surface of the track in the thickness direction. The at least two protrusions correspond to the at least two grooves one by one. The protrusions extend along the extending direction of the track. A thickness difference surface corresponding to the abutting portion is provided at the extending end of the protrusion. The thickness difference surfaces of the at least two protrusions are staggered in the extending direction of the track. The protrusion enters the groove through the opening, and the thickness difference surface abuts against the corresponding abutting portion.

[0006] In one embodiment, there are three protrusions and three grooves respectively; the three protrusions are the first protrusion, the second protrusion and the third protrusion, and the lengths of the first protrusion, the second protrusion and the third protrusion gradually decrease along the extending direction of the track; the three grooves are the first groove, the second groove and the third groove respectively, and the widths of the first groove, the second groove and the third groove gradually increase. The cutting machine has a first inclined state, a second inclined state and a third inclined state; in the first inclined state, the thickness difference surface of the first protrusion abuts against the abutting portion of the first groove; in the second inclined state, the thickness difference surface of the second protrusion abuts against the abutting portion of the second groove; in the third inclined state, the thickness difference surface of the third protrusion abuts against the abutting portion of the third groove.

[0007] In one embodiment, in the first inclined state, the saw blade is inclined 22.5 degrees relative to the bottom plate; in the second inclined state, the saw blade is inclined 45 degrees relative to the bottom plate; in the third inclined state, the saw blade is inclined 48 degrees relative to the bottom plate.

[0008] In one embodiment, the opening of at least one groove is formed on the outer peripheral surface of the adjusting pin, and the outer peripheral surface of the adjusting pin forms an abutting portion; and / or, the opening of at least one groove is located inside the adjusting pin.

[0009] In one embodiment, at least two openings are respectively formed on the outer peripheral surface of the adjusting pin.

[0010] In one embodiment, abutting portions are respectively provided on both sides of the opening along the circumferential direction of the adjusting pin; each protrusion includes two sub-protrusions, the two sub-protrusions are respectively located on both sides of the track in the thickness direction, and a thickness difference surface is provided at the extending end of the sub-protrusion.

[0011] In one embodiment, at least two openings are respectively formed inside the adjusting pin, at least two through grooves are formed on the adjusting pin, the at least two through grooves respectively correspond to the at least two grooves, one end of the through groove communicates with the corresponding opening, the other end of the through groove extends along the extending direction of the corresponding groove and penetrates through the adjusting pin, and the width of the through groove is greater than the width of the corresponding groove.

[0012] In one embodiment, an abutting portion is provided on one side of the opening along the radial direction of the groove.

[0013] In one embodiment, a plurality of grooves are communicated with each other, and one end of the groove far away from the opening penetrates through the adjusting pin and forms an outlet; the opening of the first groove is formed on the outer peripheral surface of the adjusting pin, and the openings of the second groove and the third groove are respectively located inside the adjusting pin.

[0014] In one embodiment, the second protrusion and the third protrusion are respectively located on different sides of the track in the thickness direction.

[0015] When the above-mentioned cutting machine is in use, the bottom plate is placed on the workpiece to be cut and fixed relative to the workpiece to be cut. The main body can drive the saw blade to pivot relative to the bottom plate around the first axis, so that the saw blade is inclined relative to the workpiece to be cut, so that the workpiece to be cut can be obliquely cut. Since the second angle plate is fixedly connected to the main body and the first angle plate is fixedly connected to the bottom plate, when the main body rotates around the first axis, the main body drives the second angle plate to pivot relative to the first angle plate around the first axis, so that the adjusting pin and the protrusion rotate relative to each other around the first axis. And since the adjusting pin can rotate around the second axis, the orientation of the opening of the groove of the adjusting pin can be adjusted. Therefore, when oblique cutting is required, the adjusting pin can be rotated so that the opening is aligned with the protrusion. Then, when the second angle plate rotates relative to the first angle plate, the protrusion can be driven to slide in the groove after passing through the opening until the thickness difference surface of the protrusion abuts against the abutting portion of the groove. Therefore, the second angle plate is prevented from continuing to pivot relative to the first angle plate around the first axis, so that the saw blade is positioned at a specific inclination angle. Since in the above operation process, only the adjusting pin needs to be rotated to align the opening with the protrusion, and then the main body is driven to drive the saw blade to pivot relative to the bottom plate until it is abutted by the end face, the operation is simple, so that the inclination angle of the saw blade relative to the bottom plate can be quickly positioned. [Description of the Drawings]

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

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

[0018] Figure 2 For Figure 1 It is a top view of the cutting machine in the shown embodiment.

[0019] Figure 3 For Figure 1 It is a schematic structural diagram of the second angle plate and the static guard in the shown embodiment.

[0020] Figure 4 For Figure 3 It is a partial enlarged view of the second angle plate in the shown embodiment.

[0021] Figure 5 For Figure 1 It is a rear view of the second angle plate and the static guard in the shown embodiment.

[0022] Figure 6 For Figure 1 It is a schematic structural diagram of the first angle plate in the shown embodiment.

[0023] Figure 7 The Figure 1 bottom view of the first angle plate in the illustrated embodiment.

[0024] Figure 8 The Figure 1 structural schematic diagram of the second angle plate in the illustrated embodiment from another perspective.

[0025] Figure 9 Such as Figure 1 the structural schematic diagram of the adjusting pin in the illustrated embodiment.

[0026] Figure 10 The Figure 1 side view of the adjusting pin in the illustrated embodiment.

[0027] Figure 11 The Figure 1 cross-sectional view of the adjusting pin in the illustrated embodiment.

[0028] Figure 12 The Figure 1 structural schematic diagram of the knob in the illustrated embodiment.

[0029] Figure 13 The Figure 1 structural schematic diagram of the knob in the illustrated embodiment from another perspective.

[0030] Figure 14 The Figure 1 side view of the knob and the first angle plate in the illustrated embodiment.

[0031] Figure 15 The Figure 1 front view of the knob and the first angle plate in the illustrated embodiment.

[0032] Figure 16 The Figure 15 cross-sectional view of the knob, the adjusting pin and the first angle plate along the M-M line in the illustrated embodiment.

[0033] Figure 17 The Figure 1 structural schematic diagram of the cutting machine in the first inclined state in the illustrated embodiment.

[0034] Figure 18 The Figure 1 cross-sectional view perpendicular to the first axis of the cutting machine in the first inclined state in the illustrated embodiment.

[0035] Figure 19 The Figure 1 structural schematic diagram of the cutting machine in the second inclined state in the illustrated embodiment.

[0036] Figure 20 The Figure 1Cross-sectional view of the cutting machine in the second inclined state perpendicular to the first axis in the illustrated embodiment.

[0037] Figure 21 is Figure 1 Schematic structural view of the cutting machine in the third inclined state in the illustrated embodiment.

[0038] Figure 22 is Figure 1 Cross-sectional view of the cutting machine in the third inclined state perpendicular to the first axis in the illustrated embodiment.

[0039] Figure 23 Partial schematic structural view of the cutting machine in another embodiment of the present application.

[0040] Figure 24 is Figure 23 Schematic structural view of the adjusting pin in the illustrated embodiment.

[0041] Figure 25 is Figure 23 Schematic structural view of the adjusting pin from another perspective in the illustrated embodiment.

[0042] Figure 26 is Figure 23 Cross-sectional view of the adjusting pin in the illustrated embodiment.

[0043] Figure 27 is Figure 23 Cross-sectional view of the protrusion and the adjusting pin in the illustrated embodiment.

[0044] Figure 28 is Figure 23 Cross-sectional view of the track and the adjusting pin in the first inclined state in the illustrated embodiment.

[0045] Figure 29 is Figure 23 Cross-sectional view of the track and the adjusting pin in the second inclined state in the illustrated embodiment.

[0046] Figure 30 is Figure 23 Cross-sectional view of the track and the adjusting pin in the third inclined state in the illustrated embodiment.

[0047] Description of main element symbols:

[0048] Cutting machine - 500; First angle plate - 1; Locking part - 3; Sliding groove - 10; Angle indicating part - 11; Mode indicating part - 12; Receiving part - 13; Feedback groove - 14; Second angle plate - 2; Static shield - 4; Tilt angle quick adjustment mechanism - 5; Knob - 6; Feedback protrusion - 60; Hand operating part - 61; Indicator arrow - 62; Adjusting pin - 7; Adjusting part - 700; Groove - 70; Opening - 71; Abutting part - 72; Outlet - 76; First groove - 70a; Second groove - 70b; Third groove - 70c; Through groove - 75; Mounting part - 701; Flat position - 73; Card slot - 74; Track - 8; Protrusion - 81; First protrusion - 81a; Second protrusion - 81b; Third protrusion - 81c; Thickness difference surface - 811; Snap ring – 9. [Specific embodiments]

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0050] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0052] Some embodiments of the present application will be described in detail. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0053] Figure 1 It is a schematic structural diagram of the cutting machine 500 in an embodiment of the present application; Figure 2 For Figure 1 It is a top view of the cutting machine 500 in the shown embodiment; Figure 3 For Figure 1 It is a schematic structural diagram of the second angle plate 2 and the static shield 4 in the shown embodiment; Figure 4 ForFigure 3 Partial enlarged view of the second gusset plate 2 in the illustrated embodiment; Figure 5 is Figure 1 Rear view of the second gusset plate 2 and the static guard 4 in the illustrated embodiment; Figure 6 is Figure 1 Schematic structural view of the first gusset plate 1 in the illustrated embodiment; Figure 7 is Figure 1 Bottom view of the first gusset plate 1 in the illustrated embodiment; Figure 8 is Figure 1 Schematic structural view of the second gusset plate 2 in the illustrated embodiment from another perspective; Figure 9 Such as Figure 1 Schematic structural view of the adjusting pin 7 in the illustrated embodiment; Figure 10 is Figure 1 Side view of the adjusting pin 7 in the illustrated embodiment; Figure 11 is Figure 1 Cross-sectional view of the adjusting pin 7 in the illustrated embodiment; Figure 12 is Figure 1 Schematic structural view of the knob 6 in the illustrated embodiment; Figure 13 is Figure 1 Schematic structural view of the knob 6 in the illustrated embodiment from another perspective; Figure 14 is Figure 1 Side view of the knob 6 and the first gusset plate 1 in the illustrated embodiment; Figure 15 is Figure 1 Front view of the knob 6 and the first gusset plate 1 in the illustrated embodiment; Figure 16 is Figure 15 Cross-sectional view of the knob 6, the adjusting pin 7 and the first gusset plate 1 along the line M-M in the illustrated embodiment; Figure 17 is Figure 1 Schematic structural view of the cutting machine 500 in the first inclined state in the illustrated embodiment; Figure 18 is Figure 1 Cross-sectional view perpendicular to the first axis of the cutting machine 500 in the first inclined state in the illustrated embodiment; Figure 19 is Figure 1 Schematic structural view of the cutting machine 500 in the second inclined state in the illustrated embodiment; Figure 20 is Figure 1 Cross-sectional view perpendicular to the first axis of the cutting machine 500 in the second inclined state in the illustrated embodiment;

[0054] Figure 21 is Figure 1 Schematic structural view of the cutting machine 500 in the third inclined state in the illustrated embodiment; Figure 22 is Figure 1 Cross-sectional view perpendicular to the first axis of the cutting machine 500 in the third inclined state in the illustrated embodiment;

[0055] Figure 23 Partial structural schematic diagram of a cutting machine 500 in another embodiment of the present application; Figure 24 For Figure 23 Structural schematic diagram of the adjusting pin 7 in the illustrated embodiment; Figure 25 For Figure 23 Structural schematic diagram of the adjusting pin 7 in another perspective in the illustrated embodiment; Figure 26 For Figure 23 Front view of the adjusting pin 7 in the illustrated embodiment;

[0056] Figure 27 For Figure 23 Cross-sectional view of the protrusion 81 and the adjusting pin 7 in the illustrated embodiment; Figure 28 For Figure 23 Cross-sectional view of the track 8 and the adjusting pin 7 in the first inclined state in the illustrated embodiment; Figure 29 For Figure 23 Cross-sectional view of the track 8 and the adjusting pin 7 in the second inclined state in the illustrated embodiment; Figure 30 For Figure 23 Cross-sectional view of the track 8 and the adjusting pin 7 in the third inclined state in the illustrated embodiment.

[0057] Refer to Figure 1 and Figure 2 , this embodiment provides a cutting machine 500, including a bottom plate (not shown in the figure) placed on the workpiece to be cut, a first angle plate 1 fixedly connected to the bottom plate (see Figures 6 to 8 ), a second angle plate 2 pivotally connected to the first angle plate 1 (see Figures 3 to 5 ), and a main body fixedly connected to the second angle plate 2. The main body and the second angle plate 2 pivot relative to the first angle plate 1 about a first axis X1, and a saw blade (not shown in the figure) is provided on the main body. The cutting machine 500 further includes a tilt angle quick adjustment mechanism 5, and the tilt angle quick adjustment mechanism 5 includes an adjusting pin 7 provided on one of the first angle plate 1 and the second angle plate 2 (see Figures 9 to 11 ), and a track 8 provided on the other of the first angle plate 1 and the second angle plate 2 (see Figure 4) The track 8 protrudes towards the adjusting pin 7. The adjusting pin 7 is provided with an arc-shaped groove 70. At least two grooves 70 are distributed at intervals along the circumferential direction of the adjusting pin 7, and the widths of at least two grooves 70 in the radial direction are not equal to each other. One end of the groove 70 is an opening 71. The edge of the opening 71 along the radial direction of the groove 70 is provided with an abutting portion 72. At least two protrusions 81 protrude from the side surface of the track 8 in the thickness direction. The at least two protrusions 81 correspond to the at least two grooves 70 one by one. The protrusions 81 extend along the extending direction of the track 8. The extending end of the protrusion 81 is provided with a thickness difference surface 811 corresponding to the abutting portion 72. The thickness difference surfaces 811 of the at least two protrusions 81 are staggered in the extending direction of the track 8. The adjusting pin 7 can rotate around the second axis, so that the track 8 is aligned with any groove 70, thereby allowing the second angle plate 2 to rotate relative to the first angle plate 1, driving the track 8 to pass through the opening 71 and slide into the groove 70 until the thickness difference surface 811 abuts against the corresponding abutting portion 72, and further keeping the second angle plate 2 in an inclined state where it cannot continue to rotate.

[0058] For the above-mentioned cutting machine 500, the bottom plate is placed on the workpiece to be cut and fixed relative to the workpiece to be cut. The main body can drive the saw blade to pivot relative to the bottom plate around the first axis X1, so that the saw blade is inclined relative to the workpiece to be cut, thereby enabling bevel cutting of the workpiece to be cut. Since the second angle plate 2 is fixedly connected to the main body and the first angle plate 1 is fixedly connected to the bottom plate, when the main body rotates around the first axis X1, the main body drives the second angle plate 2 to pivot relative to the first angle plate 1 around the first axis X1, so that the adjusting pin 7 and the track 8 rotate relative to each other around the first axis X1. And because the adjusting pin 7 can rotate around the second axis, the orientation of the opening 71 of the groove 70 of the adjusting pin 7 can be adjusted, so that the adjusting pin 7 can be rotated when bevel cutting is required to align the opening 71 with the track 8. Then, when the second angle plate 2 rotates relative to the first angle plate 1, it can drive the protrusion 81 to slide in the groove 70 after passing through the opening 71 until the thickness difference surface 811 at the extending end of the protrusion 81 abuts against the abutting portion 72 of the groove 70, thereby preventing the second angle plate 2 from continuing to pivot relative to the first angle plate 1 around the first axis X1, that is, positioning the saw blade to a specific inclination angle, which is beneficial to improving the positioning accuracy of the inclination angle of the saw blade, so that rapid and accurate positioning of a specific inclination angle can be achieved.

[0059] Since there are at least two grooves 70 and the widths of at least two grooves 70 are not equal to each other, different grooves 70 can respectively correspond to different protrusions 81, that is, the abutting portions 72 of different grooves 70 can respectively abut against the thickness difference surfaces 811 of different protrusions 81, and then the saw blade can be positioned at different inclination angles respectively. During use, by adjusting the pin 7 to switch the groove 70 aligned with the track 8, and then turning the track 8 into the groove 70 until the abutting portion 72 abuts against the corresponding thickness difference surface 811, so as to position the saw blade at the corresponding inclination angle. Therefore, the above-mentioned cutting machine 500 can quickly adjust the inclination angle by rotating the adjusting pin 7 to switch the inclination angle at which the saw blade is positioned, and realizes the switching through the cooperation of the adjusting pin 7 and the protrusion 81, without other parts, with a simple structure, and the installation and manufacture of each part are simple.

[0060] Optionally, the thickness direction of the track 8 is the width direction of the groove 70, that is, the radial direction of the groove 70.

[0061] During use, first rotate the adjusting pin 7 according to the required inclination angle to align the opening 71 of the groove 70 corresponding to the inclination angle with the track 8, and then pivot the main body portion relative to the bottom plate around the first axis X1, so as to drive the second angle plate 2 to rotate relative to the first angle plate 1, so as to drive the protrusion 81 to slide in the groove 70 until the thickness difference surface 811 abuts against the abutting portion 72, and then position the saw blade at the required inclination angle. When the inclination angle needs to be adjusted, first slide the track 8 out of the previous groove 70, then rotate the adjusting pin 7 until another groove 70 is aligned with the track 8, and then rotate the second angle plate 2 until the thickness difference surface 811 abuts against the abutting portion 72, so as to position the saw blade at another inclination angle.

[0062] In some embodiments, as Figure 11 shown, one end of the groove 70 far away from the opening 71 penetrates through the adjusting pin 7 and forms an outlet 76. Combining Figure 18 shown, the track 8 is movably inserted through the outlet 76, so as to avoid the length of the groove 70 restricting the rotation distance of the track 8. When adjusting the inclination angle, it is necessary to first rotate the track 8 toward the side close to the opening 71 to disengage the track 8 from the adjusting pin 7, then rotate the adjusting pin 7 and then rotate the track 8 to adjust to another inclination angle.

[0063] In some embodiments, as Figure 3 shown, the cutting machine 500 further includes a static guard 4 connected to the second angle plate 2.

[0064] In some embodiments, as Figure 4 and Figure 11As shown, there are three protrusions 81 and three grooves 70 respectively. The three protrusions 81 are the first protrusion 81a, the second protrusion 81b, and the third protrusion 81c, and the lengths of the first protrusion 81a, the second protrusion 81b, and the third protrusion 81c gradually decrease along the extension direction of the track 8. The three grooves 70 are the first groove 70a, the second groove 70b, and the third groove 70c, and the widths of the first groove 70a, the second groove 70b, and the third groove 70c gradually increase. The cutting machine 500 has a first inclined state, a second inclined state, and a third inclined state. Combining Figure 17 and Figure 18 shown, in the first inclined state, the thickness difference surface 811 of the first protrusion 81a abuts against the abutting portion 72 of the first groove 70a. As Figure 19 and Figure 20 shown, in the second inclined state, the thickness difference surface 811 of the second protrusion 81b abuts against the abutting portion 72 of the second groove 70b. As Figure 21 and Figure 22 shown, in the third inclined state, the thickness difference surface 811 of the third protrusion 81c abuts against the abutting portion 72 of the third groove 70c. In this way, the maximum distances that the first protrusion 81a, the second protrusion 81b, and the third protrusion 81c can rotate around the first axis X1 gradually increase, so that the inclined angles at which the saw blade is positioned in the first inclined state, the second inclined state, and the third inclined state gradually increase. And the widths of the first groove 70a, the second groove 70b, and the third groove 70c gradually increase, making the structural setting of the protrusion 81 more reasonable. In some other embodiments, the number of grooves 70 and the number of protrusions 81 can also be set otherwise (not shown in the figure), for example, there can be two, four, etc. grooves 70 and protrusions 81 respectively.

[0065] In some embodiments, as Figure 17 and Figure 18 shown, in the first inclined state, the saw blade is inclined 22.5 degrees relative to the bottom plate. As Figure 19 and Figure 20 shown, in the second inclined state, the saw blade is inclined 45 degrees relative to the bottom plate. As Figure 21 and Figure 22 shown, in the third inclined state, the saw blade is inclined 48 degrees relative to the bottom plate. In this way, the positioning of the inclined angles of 22.5 degrees, 45 degrees, and 48 degrees can be realized respectively. In some other embodiments, 48 degrees can also be replaced by other specific angles.

[0066] In some embodiments, the cutting machine 500 also has an initial state. In the initial state, the inclined angle of the saw blade is 0, and the track 8 passes through the first groove 70a. The adjusting pin 7 can be lifted along the second axis X2 to disengage the groove 70 from the track 8, and then the adjusting pin 7 can be rotated only when it is kept in the lifted state.

[0067] In some embodiments, as Figure 11 shown, the opening 71 of at least one groove 70 is formed on the outer peripheral surface of the adjusting pin 7, and an abutting portion 72 is formed on the outer peripheral surface of the adjusting pin 7. In this way, the thickness difference surface 811 of the protrusion 81 is limited by the outer peripheral surface of the adjusting pin 7, so that the structure of the adjusting pin 7 is simple and easy to manufacture.

[0068] In some embodiments, as Figure 11 shown, the opening 71 of at least one groove 70 is located inside the adjusting pin 7, which is beneficial to reducing the length of the protrusion 81.

[0069] It should be noted that the structures of the groove 70 and the protrusion 81 can be set differently. For example, Figures 9 to 22 shows a setting method, Figures 23 to 30 shows another setting method, and the two setting methods will be described separately below.

[0070] In some embodiments, as Figures 24 to 26 shown, at least two openings 71 are respectively formed on the outer peripheral surface of the adjusting pin 7. In this embodiment, the openings 71 of the three grooves 70 are respectively formed on the outer peripheral surface of the adjusting pin 7 to further simplify the structure of the adjusting pin 7. The three grooves 70 are respectively a first groove 70a, a second groove 70b, and a third groove 70c. The width of the opening 71 of the first groove 70a is a, the width of the opening 71 of the second groove 70b is b, and the width of the opening 71 of the third groove 70c is c, and the above dimensions satisfy a < b < c.

[0071] In some embodiments, as Figure 26 shown, abutting portions 72 are respectively provided on both sides of the opening 71 along the circumferential direction of the adjusting pin 7. Combining Figure 27 and Figure 28 shown, each protrusion 81 includes two sub-protrusions, and the two sub-protrusions are respectively located on both sides of the track 8 in the thickness direction. The extending end of the sub-protrusion is provided with a thickness difference surface 811, so that the two thickness difference surfaces 811 of the same protrusion 81 can respectively abut against the corresponding two abutting portions 72, improving the use reliability.

[0072] In some embodiments, as Figure 23 shown, a first protrusion 81a, a second protrusion 81b, and a third protrusion 81c are respectively arranged along the thickness direction of the track 8 and towards the outside of the track 8. In this way, along the thickness direction of the track 8, the thickness difference surface 811 of the second protrusion 81b is located between the thickness difference surface 811 of the first protrusion 81a and the thickness difference surface 811 of the third protrusion 81c. It can be understood that, as Figure 27 and Figure 28As shown, the width of the first groove 70a is greater than the thickness of the rail 8 to allow the rail 8 to movably pass through the first groove 70a, and the width of the first groove 70a is less than the sum of the thicknesses of the rail 8 and the first protrusion 81a to limit the saw blade to the first inclined state through the first groove 70a. As Figure 29 As shown, the width of the second groove 70b is greater than the sum of the thicknesses of the rail 8 and the first protrusion 81a to allow the first protrusion 81a to movably pass through the second groove 70b, and the width of the second groove 70b is less than the sum of the thicknesses of the rail 8, the first protrusion 81a, and the second protrusion 81b to limit the saw blade to the second inclined state through the second groove 70b. As Figure 30 As shown, the width of the third groove 70c is greater than the sum of the thicknesses of the rail 8, the first protrusion 81a, and the second protrusion 81b to allow the second protrusion 81b to movably pass through the third groove 70c, and the width of the third groove 70c is less than the sum of the thicknesses of the rail 8, the first protrusion 81a, the second protrusion 81b, and the third protrusion 81c to limit the saw blade to the third inclined state through the third groove 70c. The first protrusion 81a, the second protrusion 81b, and the third protrusion 81c significantly protrude from the upper half of the rail 8. Therefore, the rotation switching operation can be performed when the adjusting pin 7 is placed facing the upper half of the rail 8. For example, after a 45° bevel cut is completed and a 48° bevel cut is required next, the second angle plate 2 needs to be reset to the non-inclined state to place the adjusting pin 7 facing the lower upper half of the rail 8 so that the adjusting pin 7 can be rotated and switched to the next state.

[0073] In some other embodiments, as Figures 9 to 11 As shown, at least two openings 71 are respectively formed in the interior of the adjusting pin 7. At least two through grooves 75 are formed in the adjusting pin 7. The at least two through grooves 75 respectively correspond to the at least two grooves 70. One end of the through groove 75 communicates with the corresponding opening 71, and the other end of the through groove 75 extends along the extending direction of the corresponding groove 70 and penetrates the adjusting pin 7. The width of the through groove 75 is greater than the width of the corresponding groove 70. In this way, the protrusion 81 can pass through the through groove 75 and abut against the corresponding abutting portion 72, which is beneficial to reducing the length of the protrusion 81 and further beneficial to improving the machining accuracy of the protrusion 81.

[0074] In some embodiments, as Figure 11 As shown, an abutting portion 72 is provided on one side of the opening 71 along the radial direction of the groove 70, so that the corresponding protrusion 81 protrudes from one side of the rail 8 (see Figure 18 , Figure 20 and Figure 22 ), simplifying the structure of the protrusion 81 and further beneficial to improving the machining accuracy of the protrusion 81.

[0075] In some embodiments, as Figure 11As shown, a plurality of grooves 70 are communicated with each other. One end of the groove 70 far from the opening 71 penetrates through the adjusting pin 7 and forms an outlet 76. Combining Figure 18 As shown, the opening 71 of the first groove 70a is formed on the outer peripheral surface of the adjusting pin 7. Combining Figure 20 and Figure 22 As shown, the openings 71 of the second groove 70b and the third groove 70c are respectively located inside the adjusting pin 7. In this way, it is beneficial to reduce the lengths of the second protrusion 81b and the third protrusion 81c, and further simplify the structure of the track 8, which is convenient for processing.

[0076] In some embodiments, as Figure 4 shown, the second protrusion 81b and the third protrusion 81c are respectively located on different sides of the track 8 in the thickness direction, so that the structure of the track 8 is more compact. In this embodiment, the second protrusion 81b is located on the side of the first protrusion 81a away from the track 8 in the thickness direction.

[0077] In some embodiments, as Figure 16 shown, the adjusting pin 7 is arranged on the first angle plate 1. As Figure 4 shown, the protrusion 81 is arranged on the second angle plate 2. The first angle plate 1 is arranged at one end of the bottom plate away from the main body part. As Figure 17 and Figure 18 shown, a sliding groove 10 is provided on the first angle plate 1. A locking member 3 is fixedly connected to the second angle plate 2 by threads. The locking member 3 is slidably disposed through the sliding groove 10. In this way, when the tilt angle needs to be adjusted, first loosen the locking member 3 to allow the first angle plate 1 to rotate relative to the second angle plate 2, that is, the locking member 3 slides in the sliding groove 10. Until the second angle plate 2 cannot rotate further, then tighten the locking member 3 to lock the first angle plate 1 and the second angle plate 2, thereby locking and fixing the saw blade at the corresponding tilt angle to prevent the saw blade from shaking.

[0078] In some embodiments, as Figures 14 to 16 shown, the tilt angle quick adjustment mechanism 5 further includes a knob 6 protruding outside the first angle plate 1 or the second angle plate 2 (see Figure 12 and Figure 13 ). Combining Figure 9 and Figure 10 As shown, the adjusting pin 7 includes a mounting portion 701 and an adjusting portion 700 which are connected to each other. The groove 70 is provided on the adjusting portion 700. The mounting portion 701 is fixedly connected to the knob 6. The adjusting portion 700 is disposed between the first angle plate 1 and the second angle plate 2 (see Figure 17 ), so that the adjusting portion 700 is close to the protrusion 81, thereby facilitating the cooperation between the groove 70 and the protrusion 81. During use, the adjusting pin 7 can be driven to rotate by operating the knob 6, so that the corresponding groove 70 is aligned with the protrusion 81. And since the knob 6 protrudes outside the first angle plate 1 or the second angle plate 2, it is convenient to operate the knob 6. Optionally, the knob 6 is adapted to the mounting portion 701.

[0079] In some embodiments, the adjusting portion 700 of the adjusting pin 7 is cylindrical, and the second axis X2 coincides with the center line of the adjusting pin 7. In other embodiments, the adjusting pin 7 can be designed as a square, a polygon, or other reasonable shapes.

[0080] In some embodiments, such as Figure 9 , Figure 10 and Figure 16 shown, the mounting portion 701 is provided with a flat portion 73 for mating with the knob 6 to prevent relative rotation between the adjusting pin 7 and the knob 6. One end of the mounting portion 701 away from the adjusting portion 700 extends out of the knob 6 and is provided with a clamping groove 74 for mounting a snap ring 9 to fix the adjusting pin 7 axially relative to the knob 6.

[0081] In some embodiments, such as Figure 8 shown, the first angle plate 1 or the second angle plate 2 is further provided with a receiving portion 13 for receiving the adjusting portion 700 (see Figure 9 ), the receiving portion 13 is open on one side facing the protrusion 81 (see Figure 4 ), so that the protrusion 81 can extend into the receiving portion 13 and slide in the groove 70. Thus, by providing the receiving portion 13, the spatial layout of the tilt angle quick adjustment mechanism 5 is made more compact. In this embodiment, the receiving portion 13 is provided on the first angle plate 1, and the receiving portion 13 is open on the side facing the second angle plate 2.

[0082] In some embodiments, such as Figure 14 and Figure 15 shown, the first angle plate 1 is provided with an angle indicating portion 11 and a mode indicating portion 12. The angle indicating portion 11 is provided on the outer peripheral surface of the first angle plate 1, and the angle indicating portion 11 includes a plurality of angle scales arranged along the circumferential direction of the knob 6 for indicating the tilt angle of the saw blade relative to the bottom plate. The mode indicating portion 12 is provided on the surface of the first angle plate 1 away from the second angle plate 2 (see Figure 17 ), and is located on the outer periphery of the knob 6 for identifying the rotation angle of the knob 6. For example, the mode indicating portion 12 may include "22.5", "45", and "48".

[0083] In some embodiments, please refer to Figure 6 , Figure 12 and Figure 13 shown, the knob 6 includes a long hand-operating portion 61 for facilitating user operation, an indicating arrow 62 is provided at the end of the hand-operating portion 61, and preferably two symmetrically distributed feedback protrusions 60 are provided on the back of the knob 6. Please refer to Figure 6As shown in the figure, on the front surface of the first corner plate 1, there is a feedback groove 14 provided facing the back surface of the knob 6 and corresponding to the feedback protrusion 60. Preferably, six feedback grooves 14 are provided, that is, the feedback grooves 14 are three groups of symmetrically arranged depressions. The feedback protrusion 60 can slide into or out of the feedback groove 14, capable of feeding back the gear operation of the knob 6, improving the convenience of user use; the indicating arrow 62 can rotate and face the corresponding mode indicating portion 12.

[0084] In some embodiments, there are two first corner plates 1 and two second corner plates 2 (not shown in the figure). The two first corner plates 1 correspond to the two second corner plates 2 respectively, and the two first corner plates 1 are spaced apart along the extension direction of the first axis X1. A plurality of grooves 70 are circumferentially spaced apart and the recess depths of the plurality of grooves 70 are not equal to each other. In this way, by providing two first corner plates 1 and two second corner plates 2, when the first corner plate 1 rotates relative to the second corner plate 2, the inclination angle of the saw blade is positioned respectively by the cooperation of the two adjusting pins 7 and the corresponding protrusions 81, which is beneficial to improving the adjustment accuracy of the inclination angle quick adjustment mechanism 5. Optionally, the two second corner plates 2 are respectively connected to both ends of the static guard 4 along the extension direction of the first axis X1.

[0085] The cutting machine 500 disclosed in this application realizes the rapid and accurate positioning of the inclination angle of the saw blade through the inclination angle quick adjustment mechanism 5. Its core innovations are as follows: First, it is a multi-gear angle positioning system. By combining the width-gradual grooves 70 (70a / 70b / 70c) circumferentially distributed on the adjusting pin 7 with the length-gradual protrusions 81 (81a / 81b / 81c) on the track 8, for the first time, multi-gear mechanical locking such as 22.5°, 45°, 48°, etc. is realized (for example, the first groove 70a corresponds to 22.5°, the second groove 70b corresponds to 45°, and the third groove 70c corresponds to 48°), breaking through the traditional single-positioning limitation. Second, it is a rotary angle switching mechanism. The adjusting pin 7 can rotate around the second axis X2 to switch the target groove. Combined with the design of the knob 6, the traditional minute-level adjustment is shortened to a second-level operation, and the operation experience is improved through the tactile feedback between the feedback protrusion 60 and the groove 14. Third, it is a dynamic limit locking structure. The thickness difference surface 811 at the end of the protrusion 81 and the abutting portion 72 of the groove 70 form a mechanical bite. The asymmetric design is adopted to achieve two-way limit, and the positioning accuracy reaches ±0.5°, solving the defect that the traditional friction locking is prone to deviation. In addition, the composite opening layout mixes the outer peripheral surface opening (such as the first groove 70a) and the internal opening (the second groove 70b / the third groove 70c), and combines the through-groove 75 communication design to achieve structural compactness while ensuring strength. Finally, for the angle indicating portion 11 and the mode indicating portion 12, the angle adjustment is visualized through the correspondence between the knob indicating arrow 62 and the scale. Through the innovation of the mechanical structure and the integration of functions, this application significantly improves the miter cutting efficiency and machining accuracy of the cutting machine, providing an efficient and reliable angle adjustment solution for the power tool field.

[0086] The above embodiments are only used to illustrate the technical solutions of the present application rather than to limit it. Although the present application has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that modifications or equivalent replacements of the technical solutions of the present application should not depart from the spirit and scope of the technical solutions of the present application.

Claims

1. A cutting machine, comprising a bottom plate placed on a workpiece to be cut, a first angle plate fixedly connected to the bottom plate, a second angle plate pivotally connected to the first angle plate, and a main body fixedly connected to the second angle plate. The main body and the second angle plate pivot relative to the first angle plate about a first axis. It is characterized in that: The cutting machine further comprises a tilt angle quick adjustment mechanism. The tilt angle quick adjustment mechanism includes an adjustment pin provided on one of the first angle plate and the second angle plate, and a track provided on the other of the first angle plate and the second angle plate. The adjustment pin rotates about a second axis. An arc-shaped groove is formed in the adjustment pin. At least two grooves are circumferentially spaced apart along the adjustment pin, and the widths of at least two grooves in the radial direction thereof are not equal. One end of the groove is an opening for the track to pass through, and an abutting portion is provided on the edge of the opening in the radial direction of the groove. The track protrudes towards the adjustment pin. At least two protrusions are provided on the side surface of the track in the thickness direction. At least two protrusions correspond to at least two grooves one by one. The protrusions extend along the extending direction of the track. A thickness difference surface corresponding to the abutting portion is provided at the extending end of the protrusion. The thickness difference surfaces of at least two protrusions are staggeredly distributed in the extending direction of the track. The protrusion enters the groove through the opening, and the thickness difference surface abuts against the corresponding abutting portion.

2. The cutting machine according to claim 1, wherein: There are three protrusions and three grooves respectively. The three protrusions are a first protrusion, a second protrusion and a third protrusion respectively, and the lengths of the first protrusion, the second protrusion and the third protrusion in the extending direction of the track gradually decrease. The three grooves are a first groove, a second groove and a third groove respectively, and the widths of the first groove, the second groove and the third groove gradually increase. The cutting machine has a first tilt state, a second tilt state and a third tilt state. In the first tilt state, the thickness difference surface of the first protrusion abuts against the abutting portion of the first groove. In the second tilt state, the thickness difference surface of the second protrusion abuts against the abutting portion of the second groove. In the third tilt state, the thickness difference surface of the third protrusion abuts against the abutting portion of the third groove.

3. The cutting machine according to claim 2, characterized in that: A saw blade is provided on the main body. In the first tilt state, the saw blade is tilted 22.5 degrees relative to the bottom plate. In the second tilt state, the saw blade is tilted 45 degrees relative to the bottom plate. In the third tilt state, the saw blade is tilted 48 degrees relative to the bottom plate.

4. The cutting machine according to any one of claims 1 to 3, characterized in that: The opening of at least one groove is provided on the outer peripheral surface of the adjustment pin, and the outer peripheral surface of the adjustment pin forms the abutting portion; and / or, the opening of at least one groove is located inside the adjustment pin.

5. The cutting machine according to claim 4, characterized in that: The openings of at least two openings are respectively provided on the outer peripheral surface of the adjustment pin.

6. The cutting machine according to claim 5, wherein: The opening is respectively provided with abutting portions on both sides along the circumferential direction of the adjusting pin; each of the protrusions includes two sub-protrusions, the two sub-protrusions are respectively located on both sides of the track along the thickness direction, and the extended end of the sub-protrusion is provided with the thickness difference surface.

7. The cutting machine according to claim 4, characterized in that: At least two of the openings are respectively formed in the adjusting pin, at least two through grooves are formed in the adjusting pin, at least two of the through grooves respectively correspond to at least two of the grooves, one end of the through groove communicates with the corresponding opening, the other end of the through groove extends along the extending direction of the corresponding groove and penetrates through the adjusting pin, and the width of the through groove is greater than the width of the corresponding groove.

8. The cutting machine according to claim 7, characterized in that: The opening is provided with the abutting portion on one side along the radial direction of the groove.

9. The cutting machine according to claim 2, characterized in that: A plurality of the grooves are communicated with each other, and one end of the groove away from the opening penetrates through the adjusting pin and forms an outlet; the opening of the first groove is formed on the outer peripheral surface of the adjusting pin, and the openings of the second groove and the third groove are respectively located inside the adjusting pin.

10. The cutting machine according to claim 9, characterized in that: The second protrusion and the third protrusion are respectively located on different sides of the track along the thickness direction.

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