Cutting machine

Abstract

A cutting machine comprises a bottom plate arranged on a workpiece to be cut, a first angle plate, a second angle plate and a main body part, the first angle plate and the second angle plate are fixedly connected with the bottom plate, an inclination angle fast adjusting mechanism comprises an adjusting pin arranged on one of the first angle plate and the second angle plate and a protrusion arranged on the other one of the first angle plate and the second angle plate, and the protrusion protrudes towards the adjusting pin. An arc-shaped groove is formed in the adjusting pin, one end of the groove is open, and the extending tail end of the groove is an end face. The protrusion is aligned with the groove, so that the second angle plate is allowed to rotate relative to the first angle plate, the protrusion is driven to penetrate through the opening and slide into the groove till the protrusion abuts against the end face, and then the second angle plate is kept in an inclined state which cannot continue to rotate. The device has the beneficial effects that the inclination angle of the saw blade relative to the bottom plate is rapidly positioned, the structure is simple and convenient, machining is easy, and operation is convenient and rapid.

Description

[TECHNICAL FIELD]

[0001] The present application relates to the technical field of electric tools, in particular to a cutting machine. [BACKGROUND]

[0002] A cutting machine is provided in the related art, which includes a bottom plate placed on a workpiece to be cut, and a main body part pivotally connected to the bottom plate, and a saw blade is arranged on the main body part, when in use, the saw blade can be inclined relative to the bottom plate by pivoting the main body part relative to the bottom plate, so that the saw blade can be used to perform bevel cutting on the workpiece to be cut.

[0003] However, the cutting machine in the related art is difficult to quickly position the inclination angle of the saw blade relative to the bottom plate when performing bevel cutting. [SUMMARY]

[0004] The present application provides a cutting machine to solve the problem of how to quickly position the inclination angle of the saw blade relative to the bottom plate.

[0005] An embodiment of the present application provides a cutting machine, which includes 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 part fixedly connected to the second angle plate, and the main body part and the second angle plate are pivoted relative to the first angle plate about a first axis, characterized in that the cutting machine further comprises an inclination angle quick adjustment mechanism, the inclination angle quick adjustment mechanism comprises an adjusting pin arranged on one of the first angle plate and the second angle plate, and a protrusion arranged on the other of the first angle plate and the second angle plate, the protrusion is arranged protruding towards the adjusting pin, the adjusting pin is provided with an arc-shaped recess, one end of the recess is an opening and the extension end of the recess is an end face, the protrusion and the recess are aligned, and the protrusion enters the recess through the opening and abuts against the end face. The adjusting pin can rotate about a second axis to align the protrusion with the recess, so as to allow the second angle plate to rotate relative to the first angle plate to drive the protrusion to pass through the opening and slide into the recess until the protrusion abuts against the end face, thereby keeping the second angle plate in an inclined state where it cannot continue to rotate.

[0006] The cutting machine has the advantages that when in use, the bottom plate is placed on and fixed relative to the workpiece to be cut, the main body part can drive the saw blade to pivot relative to the bottom plate about the first axis, so that the saw blade is inclined relative to the workpiece to be cut, and thus the workpiece to be cut can be bevel cut. Since the second angle plate is fixedly connected to the main body part and the first angle plate is fixedly connected to the bottom plate, when the main body part rotates about the first axis, the main body part drives the second angle plate to pivot relative to the first angle plate about the first axis, so that the adjusting pin and the protrusion are relatively rotated about the first axis. Moreover, since the adjusting pin can rotate about the second axis, the direction of the opening of the groove of the adjusting pin can be adjusted, so that the adjusting pin is rotated when bevel cutting is needed, so that the opening is aligned with the protrusion, and when the second angle plate rotates relative to the first angle plate, the protrusion can slide in the groove after passing through the opening until the protrusion abuts against the end face at the extension end of the groove, so that the second angle plate is prevented from continuing to pivot relative to the first angle plate about the first axis, and thus the saw blade is positioned at a specific inclination angle. During the above operation process, only the adjusting pin needs to be rotated to align the opening with the protrusion, and then the main body part drives the saw blade to pivot relative to the bottom plate until the end face is abutted, so that the operation is simple, and thus the inclination angle of the saw blade relative to the bottom plate can be quickly positioned.

[0007] In one of the embodiments, the plurality of grooves are spaced apart along the circumference of the adjusting pin, and the plurality of grooves have different depths.

[0008] In one of the embodiments, the number of the grooves is three, the plurality of grooves are circular arc grooves with the same radius, the three grooves are a first groove, a second groove and a third groove, the center line of the first groove is a first arc line, the center line of the second groove is a second arc line, and the center line of the third groove is a third arc line, the center of the first arc line, the center of the second arc line and the center of the third arc line are spaced apart by 120 degrees.

[0009] In one of the embodiments, the first arc line, the second arc line and the third arc line intersect at one point.

[0010] In one of the embodiments, the depths of the first groove, the second groove and the third groove gradually increase, and the second groove and the third groove are connected.

[0011] In one of the embodiments, the main body part is provided with the saw blade, and the cutting machine has a first inclination state, a second inclination state and a third inclination state; in the first inclination state, the protrusion abuts against the end face of the first groove, and the saw blade is inclined by 22.5 degrees relative to the bottom plate; in the second inclination state, the protrusion abuts against the end face of the second groove, and the saw blade is inclined by 45 degrees relative to the bottom plate; and in the third inclination state, the protrusion abuts against the end face of the third groove, and the saw blade is inclined by 48 degrees relative to the bottom plate.

[0012] In one of the embodiments, the adjusting pin rotates about the second axis, the first axis and the second axis are parallel, and the first axis is arranged below the lower surface of the bottom plate.

[0013] In one embodiment, an adjusting pin is provided on a first corner plate, and a protrusion is provided on a second corner plate. The first corner plate is located at the end of the base plate away from the main body. A sliding groove is provided on the first corner plate, and a locking member is fixedly connected to the second corner plate by a thread. The locking member is slidably inserted into the sliding groove.

[0014] In one embodiment, the tilt angle quick-adjustment mechanism further includes a knob protruding from the first or second corner plate, and the adjustment pin includes a mounting part and an adjustment part connected to each other. A groove is provided on the end face of the adjustment part, the mounting part is fixedly connected to the knob, and the adjustment part is located between the first and second corner plates.

[0015] In one embodiment, the cutting machine includes two tilt angle quick-adjustment mechanisms, with two first corner plates and two second corner plates, each corresponding to one of the two second corner plates, and the two first corner plates are spaced apart along the extension direction of the first axis. [Image Description]

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a partial structural diagram of a cutting machine according to one embodiment of this application.

[0018] Figure 2 for Figure 1 A cross-sectional view of the cutting machine along the MM line in the illustrated embodiment.

[0019] Figure 3 for Figure 1 A partial front view of the cutting machine in the illustrated embodiment.

[0020] Figure 4 for Figure 1 A top view of a portion of the structure of the cutting machine in the illustrated embodiment.

[0021] Figure 5 for Figure 1 A schematic diagram of the structure of the second corner plate and the static shield in the embodiment shown.

[0022] Figure 6 for Figure 1 Rear view of the second corner plate and static shield in the illustrated embodiment.

[0023] Figure 7 for Figure 5Partial enlarged view of the second corner plate in the shown embodiment.

[0024] Figure 8 For Figure 1 Structural schematic view of the first corner plate in the shown embodiment.

[0025] Figure 9 For Figure 1 Bottom view of the first corner plate in the shown embodiment.

[0026] Figure 10 For Figure 1 Structural schematic view of the first corner plate in the shown embodiment from another perspective.

[0027] Figure 11 For Figure 1 Structural schematic view of the adjustment pin in the shown embodiment.

[0028] Figure 12 For Figure 1 Top view of the adjustment pin in the shown embodiment.

[0029] Figure 13 For Figure 1 Front view of the adjustment pin in the shown embodiment.

[0030] Figure 14 For Figure 1 Structural schematic view of the knob in the shown embodiment.

[0031] Figure 15 For Figure 1 Structural schematic view of the knob in the shown embodiment from another perspective.

[0032] Figure 16 For Figure 1 Assembled schematic view of the first corner plate and the knob in the shown embodiment.

[0033] Figure 17 For Figure 1 Front view of the first corner plate and the knob in the shown embodiment.

[0034] Figure 18 For Figure 17 Sectional view of the first corner plate, the adjustment pin and the knob along the line N-N in the shown embodiment.

[0035] Figure 19 For Figure 1 Partial structural schematic view of the cutting machine in the shown embodiment in a first tilted state.

[0036] Figure 20 For Figure 19 Partial structural sectional view of the cutting machine in the shown embodiment perpendicular to the first axis.

[0037] Figure 21 A partial structure diagram of the cutting machine in the embodiment shown in FIG. 1 in a second inclined state. Figure 1

[0038] Figure 22 A partial structure cross-sectional view of the cutting machine in the embodiment shown in FIG. 1 perpendicular to the first axis. Figure 21

[0039] Figure 23 A partial structure diagram of the cutting machine in the embodiment shown in FIG. 1 in a third inclined state. Figure 1

[0040] Figure 24 A partial structure cross-sectional view of the cutting machine in the embodiment shown in FIG. 1 perpendicular to the first axis. Figure 23

[0041] Main element symbol explanation:

[0042] Cutting machine-500; first angle plate-1; locking piece-3; sliding groove-10; angle indication part-11; mode indication part-12; accommodation part-13; feedback groove-14; mounting hole-15; second angle plate-2; static shield-4; inclined angle fast adjustment mechanism-5; knob-6; feedback protrusion-60; hand operation part-61; indication arrow-62; adjustment pin-7; adjustment part-700; groove-70; opening-71; end face-72; first groove-70a; first arc-A; second groove-70b; second arc-B; third groove-70c; third arc-C; mounting part-701; flat position-73; clamping groove-74; protrusion-8; clamping spring-9; first axis-X1; second axis-X2. [DETAILED DESCRIPTION]

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application.

[0044] 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 can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0045] ​​​​Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0046] Some embodiments of the present application are described in detail. Embodiments described below and features in the embodiments can be combined with each other in the case of no conflict.

[0047] Figure 1 A schematic diagram of a part of the cutting machine 500 in an embodiment of the present application; Figure 2 A schematic diagram of a part of the cutting machine 500 in an embodiment of the present application; Figure 1 A sectional view of the cutting machine 500 along the line M-M in the embodiment shown; Figure 3 A sectional view of the cutting machine 500 along the line M-M in the embodiment shown; Figure 1 A front view of a part of the cutting machine 500 in the embodiment shown; Figure 4 A front view of a part of the cutting machine 500 in the embodiment shown; Figure 1 A top view of a part of the cutting machine 500 in the embodiment shown; Figure 5 A top view of a part of the cutting machine 500 in the embodiment shown; Figure 1 A schematic diagram of the structure of the second corner plate 2 and the static guard 4 in the embodiment shown; Figure 6 A schematic diagram of the structure of the second corner plate 2 and the static guard 4 in the embodiment shown; Figure 1 A rear view of the second corner plate 2 and the static guard 4 in the embodiment shown; Figure 7 A rear view of the second corner plate 2 and the static guard 4 in the embodiment shown; Figure 5 An enlarged view of a part of the second corner plate 2 in the embodiment shown; Figure 8 An enlarged view of a part of the second corner plate 2 in the embodiment shown; Figure 1 A schematic diagram of the structure of the first corner plate 1 in the embodiment shown; Figure 9 A schematic diagram of the structure of the first corner plate 1 in the embodiment shown; Figure 1 A bottom view of the first corner plate 1 in the embodiment shown; Figure 10 A bottom view of the first corner plate 1 in the embodiment shown; Figure 1 A schematic diagram of the structure of the first corner plate 1 in the embodiment shown; Figure 11 A schematic diagram of the structure of the first corner plate 1 in the embodiment shown; Figure 1 A schematic diagram of the structure of the adjustment pin 7 in the embodiment shown; Figure 12 A schematic diagram of the structure of the adjustment pin 7 in the embodiment shown; Figure 1 A schematic diagram of the structure of the adjustment pin 7 in the embodiment shown; Figure 13 A schematic diagram of the structure of the adjustment pin 7 in the embodiment shown; Figure 1 A schematic diagram of the structure of the adjustment pin 7 in the embodiment shown; Figure 14 A schematic diagram of the structure of the adjustment pin 7 in the embodiment shown; Figure 1 A schematic diagram of the structure of the knob 6 in the embodiment shown; Figure 15 A schematic diagram of the structure of the knob 6 in the embodiment shown; Figure 1 A schematic diagram of the structure of the knob 6 in the embodiment shown;

[0048] Figure 16 A schematic diagram of the structure of the knob 6 in the embodiment shown; Figure 1Assembly view of the first corner plate 1 and the knob 6 in the embodiment shown; Figure 17 For Figure 1 Front view of the first corner plate 1 and the knob 6 in the embodiment shown; Figure 18 For Figure 17 Sectional view of the first corner plate 1, the adjusting pin 7 and the knob 6 along the line N-N in the embodiment shown; Figure 19 For Figure 1 Schematic view of the partial structure of the cutting machine 500 in the first inclined state in the embodiment shown; Figure 20 For Figure 19 Sectional view of the partial structure of the cutting machine 500 perpendicular to the first axis in the embodiment shown; Figure 21 For Figure 1 Schematic view of the partial structure of the cutting machine 500 in the second inclined state in the embodiment shown; Figure 22 For Figure 21 Sectional view of the partial structure of the cutting machine 500 perpendicular to the first axis in the embodiment shown; Figure 23 For Figure 1 Schematic view of the partial structure of the cutting machine 500 in the third inclined state in the embodiment shown; Figure 24 For Figure 23 Sectional view of the partial structure of the cutting machine 500 perpendicular to the first axis in the embodiment shown.

[0049] Referring to Figures 1 to 4 , the embodiment provides a cutting machine 500, which is exemplified by an electric circular saw or a track electric circular saw, the cutting machine 500 comprising a bottom plate (not shown in the figure) placed on a workpiece to be cut, a first corner plate 1 (see Figures 8 to 10 ) fixedly connected with the bottom plate, a second corner plate 2 (see Figures 5 to 7 ) pivotally connected with the first corner plate 1, and a main body (not shown in the figure) fixedly connected with the second corner plate 2, wherein the main body is usually provided with a motor (not shown in the figure) and a transmission mechanism (not shown in the figure), the main body is pivoted with the second corner plate 2 relative to the first corner plate 1 about a first axis, and the main body is provided with a saw blade (not shown in the figure). The bottom plate and the first corner plate 1 are fixedly connected by means of a screw screwed into a mounting hole 15 (not shown in the figure). Figure 9

[0050] As Figure 2 shown, the cutting machine 500 further comprises an inclined angle quick adjustment mechanism 5, the inclined angle quick adjustment mechanism 5 comprising an adjusting pin 7 (see Figures 11 to 13 ) arranged on one of the first corner plate 1 and the second corner plate 2, and a protrusion 8 (see Figure 7 ​), the protrusion 8 is arranged protruding towards the adjusting pin 7. The adjusting pin 7 is provided with an arc-shaped groove 70, one end of the groove 70 is an opening 71 and the extended end of the groove 70 is an end face 72. The adjusting pin 7 can rotate around the second axis X2 to align the protrusion 8 with the groove 70, thereby allowing the second angle plate 2 to rotate relative to the first angle plate 1 to drive the protrusion 8 to pass through the opening 71 and slide into the groove 70 until the protrusion 8 abuts against the end face 72, thereby keeping the second angle plate 2 in an inclined state that cannot continue to rotate.

[0051] The cutting machine 500 described above, when in use, the bottom plate is placed above and fixed relative to the workpiece to be cut, the main body part can drive the saw blade to pivot around the first axis X1 relative to the bottom plate, and also make the saw blade inclined relative to the workpiece to be cut, thereby being able to perform an inclined cutting operation on the workpiece to be cut. Since the second angle plate 2 is fixedly connected to the main body part and the first angle plate 1 is fixedly connected to the bottom plate, when the main body part rotates around the first axis X1, the main body part drives the second angle plate 2 to pivot around the first axis X1 relative to the first angle plate 1, thereby causing the adjusting pin 7 and the protrusion 8 to rotate relative to each other around the first axis X1. And because the adjusting pin 7 can rotate around the second axis X2, the direction of the opening 71 of the groove 70 of the adjusting pin 7 can be adjusted, so that when inclined cutting is needed, the adjusting pin 7 can be rotated to align the opening 71 with the protrusion 8, so that when the second angle plate 2 rotates relative to the first angle plate 1, the protrusion 8 can be driven to pass through the opening 71 and then slide in the groove 70 until the protrusion 8 abuts against the end face 72 at the extended end of the groove 70, thereby preventing the second angle plate 2 from continuing to pivot around the first axis X1 relative to the first angle plate 1, thereby positioning the saw blade to a specific inclination angle. Because only the adjusting pin 7 needs to be rotated to align the opening 71 with the protrusion 8 during the above operation process, and then the main body part drives the saw blade to pivot relative to the bottom plate to the abutment of the end face 72, the operation is simple, thereby being able to quickly position the inclination angle of the saw blade relative to the bottom plate.

[0052] In some embodiments, as shown in Figure 5 , the cutting machine 500 further comprises a static guard 4 fixedly connected with the second angle plate 2, the static guard 4 is used to accommodate the saw blade to protect the safety of the operator.

[0053] In some embodiments, as shown in Figures 11 to 13 , the groove 70 is provided with a plurality of grooves spaced along the circumference of the adjusting pin 7, and the depths of the plurality of grooves 70 are different from each other, or in other words, the depths of the plurality of grooves 70 are different from each other from the inward recess of the circumferential surface of the adjusting pin 7 towards the second axis. In this way, different grooves 70 allow the protrusion 8 (see Figure 7)the maximum distance of sliding in the groove 70 is not the same, so that when the protrusion 8 abuts against different end faces 72 respectively, the saw blade rotates through different inclination angles relative to the base plate about the first axis X1, and then the saw blade can be positioned at different inclination angles respectively. And since the plurality of grooves 70 are spaced along the circumference of the adjusting pin 7, when adjusting, the adjusting pin 7 is rotated about the second axis X2, so that the openings 71 of different grooves 70 are aligned with the protrusion 8 respectively, so that the protrusion 8 can be rotated into the aligned groove 70 and positioned by the end face 72, therefore, when the inclination angle of the saw blade needs to be adjusted, the inclination angle can be switched by rotating the adjusting pin 7, which is convenient to operate and can quickly adjust the inclination angle. Alternatively, the plurality of openings 71 are uniformly spaced along the circumference of the adjusting pin 7, or in other words, the openings 71 of the plurality of grooves 70 are uniformly spaced along the outer circumferential surface of the adjusting pin.

[0054] It should be noted that the recess depth of the groove 70 refers to the depth of the groove 70 along its extension direction, that is, the maximum distance that the protrusion 8 can rotate about the first axis X1 in the groove 70. Alternatively, the groove 70 extends in a plane perpendicular to the first axis X1. The two ends of the extension direction of the groove 70 are respectively provided with the opening 71 and the end face 72.

[0055] In use, first rotate the adjusting pin 7 according to the required inclination angle, so that the opening 71 of the groove 70 corresponding to the inclination angle is aligned with the protrusion 8, and then pivot the main body part about the first axis X1 relative to the base plate, so as to drive the second angle plate 2 to rotate relative to the first angle plate 1, until the protrusion 8 slides into the groove 70 and abuts against the end face 72, and then the saw blade is positioned at the required inclination angle. When a different inclination angle needs to be adjusted, first slide the protrusion 8 out of the previous groove 70, then rotate the adjusting pin 7 to align another groove 70 with the protrusion 8, and then rotate the second angle plate 2 until the protrusion 8 abuts against the end face 72, so as to position the saw blade at another inclination angle.

[0056] In some embodiments, as shown in Figure 11 and Figure 13 the number of grooves 70 is three, and the plurality of grooves 70 are all circular arc grooves with the same radius, and the three grooves 70 are respectively a first groove 70a, a second groove 70b and a third groove 70c, the center line of the first groove 70a is a first arc A, the center line of the second groove 70b is a second arc B, and the center line of the third groove 70c is a third arc C, and the centers of the first arc A, the second arc B and the third arc C are spaced 120 degrees apart. In this way, by providing three grooves 70, the saw blade can be quickly positioned at three different inclination angles respectively. Moreover, since the plurality of grooves 70 are all circular arc grooves with the same radius, they can be conveniently matched with the protrusion 8 (see Figure 7) the rotation trajectory around the first axis X1, so that the sliding of the protrusion 8 in the groove 70 is smoother and more stable. Since the centers of the first arc A, the second arc B and the third arc C are arranged at an interval of 120 degrees, when the adjusting pin 7 is aligned with one of the openings 71, the protrusion 8 can be aligned with another opening 71 and can slide into the corresponding groove 70 by rotating the adjusting pin 7 by 120 degrees.

[0057] In other embodiments, the number of grooves 70 can also be arranged in other manners (not shown), and the centers of the center lines of the grooves 70 are arranged at an interval of 360 degrees / number of grooves 70. For example, when there are four grooves 70, the center lines of the four grooves 70 are arranged at an interval of 90 degrees. In other embodiments, the positions of the grooves 70 can also be arranged in other manners. For example, the intervals between adjacent grooves 70 can also be different.

[0058] In some embodiments, as shown in Figure 13 , the first arc A, the second arc B and the third arc C intersect at a point, which is preferably the projection point of the second axis X2, so that when any opening 71 is aligned with the protrusion 8 (see Figure 7 ), the position of the center of the groove 70 aligned with the protrusion 8 does not change, so as to more accurately fit the protrusion 8 and further improve the sliding accuracy of the protrusion 8 in the groove 70.

[0059] In some embodiments, as shown in Figure 11 and Figure 13 , the depths of the first groove 70a, the second groove 70b and the third groove 70c gradually increase. The second groove 70b and the third groove 70c are arranged in communication, so that the arrangement of the second groove 70b and the third groove 70c on the adjusting pin 7 is more reasonable, which is conducive to reducing the volume of the adjusting pin 7.

[0060] In some embodiments, the width direction of the groove 70 is arranged as the radial direction of the circular arc groove, and the width of the groove 70 is greater than the width of the protrusion 8. The thickness direction of the groove 70 is parallel to the first axis X1, and the thickness of the groove 70 is greater than the thickness of the protrusion 8. In this way, the sliding of the protrusion 8 in the groove 70 is smoother.

[0061] In some embodiments, the cutting machine 500 has a first inclined state, a second inclined state and a third inclined state. As shown in Figure 19 and Figure 20 , in the first inclined state, the protrusion 8 abuts against the end face 72 of the first groove 70a, and the saw blade is inclined by 22.5 degrees relative to the base plate. As shown in Figure 21 and Figure 22 , in the second inclined state, the protrusion 8 abuts against the end face 72 of the second groove 70b, and the saw blade is inclined by 45 degrees relative to the base plate. As shown in Figure 23and Figure 24 As shown, in the third tilted state, the protrusion 8 abuts against the end face 72 of the third groove 70c, and the saw blade is tilted at 48 degrees relative to the base plate. This allows for positioning at tilt angles of 22.5 degrees, 45 degrees, and 48 degrees, respectively. In other embodiments, 48 ​​degrees can be replaced with other specific angles.

[0062] In some embodiments, the first axis X1 and the second axis X2 are arranged parallel to each other, with the first axis X1 located below the lower surface of the base plate, so as to make the structural arrangement more reasonable.

[0063] In some embodiments, such as Figure 2 and Figure 5 As shown, the adjusting pin 7 is located on the first corner plate 1, and the protrusion 8 is located on the second corner plate 2. The first corner plate 1 is located at the end of the base plate furthest from the main body. Figure 3 As shown, the first corner plate 1 has a sliding groove 10, and the second corner plate 2 is fixedly connected to a locking member 3 by a thread. The locking member 3 is slidably inserted into the sliding groove 10. Thus, when the tilt angle needs to be adjusted, the locking member 3 is first loosened to allow the first corner plate 1 to rotate relative to the second corner plate 2, that is, the locking member 3 slides in the sliding groove 10 until the protrusion 8 (see...) Figure 2 When the blade is rotated to abut against end face 72, tighten the locking piece 3 to lock the first corner plate 1 and the second corner plate 2, thereby locking the saw blade at the corresponding tilt angle to prevent the saw blade from shaking.

[0064] In some embodiments, such as Figures 14 to 17 As shown, the tilt angle quick-adjustment mechanism 5 also includes a knob 6 protruding from the first corner plate 1 or the second corner plate 2, combined with... Figure 11 and Figure 12 As shown, the adjusting pin 7 includes a mounting portion 701 and an adjusting portion 700 connected to each other, and a groove 70 is provided on the adjusting portion 700. Figure 18 As shown, the mounting part 701 is fixedly connected to the knob 6, and the adjusting part 700 is disposed between the first corner plate 1 and the second corner plate 2, so that the adjusting part 700 is close to the protrusion 8 (see figure). Figure 20 This facilitates the engagement of the groove 70 with the protrusion 8. In use, the adjusting pin 7 can be rotated by operating the knob 6 to align the corresponding groove 70 with the protrusion 8. Since the knob 6 protrudes from the first corner plate 1 or the second corner plate 2, it is easy to operate. Optionally, the knob 6 is adapted to the mounting part 701.

[0065] In some embodiments, such as Figure 11 and Figure 12 As shown, the mounting part 701 is provided with a flat portion 73 for engaging with the knob 6 to prevent relative rotation between the adjusting pin 7 and the knob 6. Figure 16As shown, the end of the mounting part 701 away from the adjusting part 700 extends out of the knob 6 and is provided with a retaining groove 74, which is used to install the retaining spring 9 (see...). Figure 3 This is done so that the adjusting pin 7 is fixed relative to the knob 6 along the axial direction.

[0066] In some embodiments, such as Figure 10 As shown, the first corner plate 1 or the second corner plate 2 is also provided with a housing adjustment section 700 (see...). Figure 2 The receiving part 13 is open on the side facing the protrusion 8, so that the protrusion 8 can extend into the receiving part 13 and slide within the groove 70. In this way, by providing the receiving part 13, the spatial arrangement of the tilt angle quick adjustment mechanism 5 is made more compact.

[0067] In some embodiments, such as Figure 16 and Figure 17 As shown, the first corner plate 1 is provided with an angle indicator 11 for indicating a specific tilt angle and a mode indicator 12 for indicating a fast angle. The angle indicator 11 is disposed on the outer peripheral surface of the first corner plate 1, and includes multiple angle scales arranged circumferentially along the knob 6, for indicating the specific tilt angle of the saw blade relative to the base plate. The mode indicator 12 is disposed on the first corner plate 1 away from the second corner plate 2 (see...). Figure 19 The surface of the mode indicator 12 is located on the outer periphery of the knob 6 and is used to indicate the rotation angle of the knob 6. For example, the mode indicator 12 may include "22.5", "45" and "48".

[0068] In some embodiments, please combine Figure 14 and Figure 15 As shown, the knob 6 includes a long, narrow hand-operated portion 61 for easy user operation. An indicator arrow 62 is provided at the end of the hand-operated portion 61. Preferably, two symmetrically distributed feedback protrusions 60 are provided on the back of the knob 6. (Please refer to...) Figure 8 As shown, on the front of the first corner plate 1, there is a feedback groove 14 provided with a feedback protrusion 60 facing the back of the knob 6. Preferably, there are 6 feedback grooves 14, that is, the feedback grooves 14 are three sets of symmetrically arranged recesses. The feedback protrusion 60 can slide or slide out of the feedback groove 14, which can provide feedback on the gear operation of the knob 6 and improve the convenience of use for the user. The indicator arrow 62 can be rotated and directed toward the corresponding mode indicator part 12.

[0069] In some embodiments, the first angle plate 1 and the second angle plate 2 each have two (not shown in the figure), two first angle plates 1 correspond to two second angle plates 2 respectively, and the two first angle plates 1 are arranged in the extension direction of the first axis X1. The grooves 70 are arranged in a plurality of circumferential intervals, and the depths of the plurality of grooves 70 are different. In this way, by arranging two first angle plates 1 and two second angle plates 2, when the first angle plate 1 rotates relative to the second angle plate 2, the tilt angle of the saw blade is positioned by the cooperation of the two adjusting pins 7 and the corresponding protrusions 8 respectively, thereby facilitating the adjustment accuracy of the tilt angle quick adjustment mechanism 5. Optionally, the two second angle plates 2 are respectively connected to the two ends of the static guard 4 along the extension direction of the first axis X1.

[0070] In some embodiments, the knob 6 and the corresponding adjusting pin 7 are arranged on the second angle plate 2, and the protrusion 8 is arranged on the first angle plate 1, and the specific structure design is the same as the above-mentioned scheme. In this way, the transverse size of the cutting machine 500 can be reduced to some extent, and there will be significant advantages on some special machines.

[0071] The design point of the present application is to realize the rapid positioning of the tilt angle of the saw blade relative to the base plate through the unique tilt angle quick adjustment mechanism 5. The tilt angle quick adjustment mechanism 5 mainly consists of an adjusting pin 7 and a protrusion 8, and the cooperation of the arc-shaped groove 70 on the adjusting pin 7 and the protrusion 8 achieves the function of angle positioning. Specifically, the adjusting pin 7 is arranged on the first angle plate 1 or the second angle plate 2 and can rotate around the second axis X2. The arc-shaped groove 70 formed thereon has an opening 71 at one end and an end face 72 at the other end. The protrusion 8 is arranged on the other angle plate and protrudes towards the adjusting pin 7. When it is necessary to adjust the tilt angle of the saw blade, the adjusting pin 7 is rotated, and the opening 71 of the groove 70 is aligned with the protrusion 8. At this time, the second angle plate 2 can rotate relative to the first angle plate 1, and the protrusion 8 slides into the groove 70 through the opening 71. With the rotation of the second angle plate 2, the protrusion 8 slides in the groove 70 until the protrusion 8 abuts against the end face 72 of the groove 70. At this time, the second angle plate 2 cannot continue to rotate, and the saw blade is positioned at a specific tilt angle.

[0072] This concise and ingenious design brings many significant advantages to the subsequent, which greatly simplifies the adjustment process of the saw blade tilt angle. When adjusting the saw blade tilt angle on a traditional cutting machine, the operator often needs to use additional angle measuring tools, such as a protractor, to repeatedly measure and finely adjust the tilt angle of the saw blade, which is tedious and time-consuming. This scheme ingeniously uses the cooperation of the adjusting pin 7 and the groove 70 and the protrusion 8 to make the operation extremely simple. The operator only needs to rotate the adjusting pin 7, align the opening 71 of the groove 70 with the protrusion 8, and then rotate the main body to make the protrusion 8 slide into the groove 70 and abut the end face 72, which can quickly complete the angle positioning. For example, a common 45-degree bevel cut, it may take several minutes to complete this angle adjustment on a traditional cutting machine, but with this scheme, a skilled operator can complete it in just a few dozen seconds, greatly improving work efficiency, especially suitable for batch operation scenarios that require high cutting efficiency. Such an efficient angle adjustment method is achieved based on the unique design points mentioned above.

[0073] In addition, the design of multiple grooves 70 with different depths on the adjusting pin 7 further enhances the flexibility of angle adjustment. Grooves 70 with different depths correspond to different tilt angles, providing operators with a variety of choices. For example, in woodworking renovation work, wood may need to be cut at angles of 22.5 degrees, 45 degrees, 48 degrees, etc. This design meets the requirements of diverse cutting tasks, whether it's simple straight cutting or complex multi-angle splicing cutting, it can easily handle it, significantly improving the applicability and practicality of the cutting machine. And this rich angle selection function is also based on the innovative design points of the adjusting pin 7 and the groove 70, closely linked to the overall design idea mentioned above, and together builds an efficient and flexible saw blade tilt angle adjustment system.

[0074] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit it, although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A cutting machine, comprising a base plate placed on a workpiece to be cut, a first corner plate fixedly connected to the base plate, a second corner plate pivotally connected to the first corner plate, and a main body fixedly connected to the second corner plate, wherein the main body and the second corner plate pivot about a first axis relative to the first corner plate, characterized in that: The cutting machine also includes a tilt angle quick-adjustment mechanism, which includes an adjustment pin on one of the first corner plate and the second corner plate, and a protrusion on the other of the first corner plate and the second corner plate. The protrusion protrudes toward the adjustment pin. The adjustment pin has an arc-shaped groove, one end of which is open and the extended end of which is an end face. The protrusion and the groove are aligned, and the protrusion enters the groove through the opening and abuts against the end face.

2. The cutting machine according to claim 1, characterized in that: The adjusting pin rotates around the second axis, and multiple grooves are distributed at intervals along the circumference of the adjusting pin, with the recess depths of the multiple grooves being unequal.

3. The cutting machine according to claim 2, characterized in that: The number of grooves is three, and all of the grooves are circular arc grooves with the same radius. The three grooves are a first groove, a second groove, and a third groove. The center line of the first groove is a first arc, the center line of the second groove is a second arc, and the center line of the third groove is a third arc. The centers of the first arc, the second arc, and the third arc are spaced 120 degrees apart from each other.

4. The cutting machine according to claim 3, characterized in that: The first arc, the second arc, and the third arc intersect at a single point.

5. The cutting machine according to claim 3, characterized in that: The recessed depths of the first groove, the second groove, and the third groove gradually increase, and the second groove and the third groove are connected.

6. The cutting machine according to claim 3, characterized in that: The main body is provided with a saw blade, and the cutting machine has a first tilt state, a second tilt state, and a third tilt state; in the first tilt state, the protrusion abuts against the end face of the first groove, and the saw blade is tilted at 22.5 degrees relative to the base plate; in the second tilt state, the protrusion abuts against the end face of the second groove, and the saw blade is tilted at 45 degrees relative to the base plate; in the third tilt state, the protrusion abuts against the end face of the third groove, and the saw blade is tilted at 48 degrees relative to the base plate.

7. The cutting machine according to claim 1, characterized in that: The adjusting pin rotates around the second axis, and the first axis is arranged parallel to the second axis, with the first axis located below the lower surface of the base plate.

8. The cutting machine according to claim 7, characterized in that: The adjusting pin is provided on the first corner plate, the protrusion is provided on the second corner plate, the first corner plate is provided at the end of the base plate away from the main body, the first corner plate is provided with a sliding groove, and the second corner plate is fixedly connected with a locking member by a thread, the locking member being slidably inserted in the sliding groove.

9. The cutting machine according to claim 7, characterized in that: The tilt angle quick-adjustment mechanism further includes a knob protruding from the first or second corner plate. The adjusting pin includes a mounting part and an adjusting part connected to each other. The groove is provided on the end face of the adjusting part. The mounting part is fixedly connected to the knob. The adjusting part is located between the first and second corner plates.

10. The cutting machine according to claim 1, characterized in that: The cutting machine includes two tilt angle quick-adjustment mechanisms, with two first angle plates and two second angle plates. The two first angle plates correspond to the two second angle plates respectively, and the two first angle plates are spaced apart along the extension direction of the first axis.

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