Circular sawing machine capable of adjusting sawing angle

Abstract

The utility model provides a circular sawing machine capable of adjusting the sawing angle. The circular sawing machine comprises a sliding block and a first pushing mechanism for driving the sliding block to slide in the first direction, and the sliding block is slidably connected with a machining table; the first clamping plate is arranged on the sliding block and is in sliding connection with the sliding block in the second direction, and the positioning base is rotationally installed on the machining table; the extension plate is horizontally arranged and fixedly connected with the positioning seat, the projection of the first clamping plate on the extension plate and the extension plate form a non-right angle, and the extension plate is hinged to the first clamping plate; the sawing head is rotationally mounted on the positioning seat; the sawing machine further comprises a second clamping plate and a second pushing mechanism driving the second clamping plate to move in the first direction, the second clamping plate and the first clamping plate form a clamping assembly used for clamping and fixing materials, the position of the first clamping plate is synchronously adjusted while the angle of a saw blade on the sawing head deflects, and therefore the clamping position of the materials can be changed, and the clamping efficiency is improved. And it is guaranteed that the sawing angle is within a reasonable range in the material sawing process.

Description

Technical Field

[0001] This application relates to the field of circular saws, and more particularly to a circular saw with an adjustable cutting angle. Background Technology

[0002] A circular saw is a toothed tool used to cut steel and wood.

[0003] like Figure 1 As shown, the circular saw includes a processing table 1 and a saw head 10 mounted on the processing table 1. The saw head 10 is rotatably connected to the processing table 1 via a rotating shaft 101. The processing table 1 also includes a clamping assembly 2 for fixing materials. The saw head 10 is provided with a handle 102. The saw head 10 can be pressed down and rotated around the rotating shaft 101 by the handle 102. At this time, the saw blade on the saw head 10 can cut the material clamped by the clamping assembly 2.

[0004] Normally, after the clamping assembly 2 clamps the material, the saw blade is set perpendicular to the material, resulting in a relatively flat cross-section after sawing. To make the processed material adaptable to different types of splicing, the saw blade needs to form an angle with the material during sawing, resulting in an inclined cut on the cross-section of the material to facilitate splicing.

[0005] In order to achieve the adjustment of the sawing angle, the patent with authorization announcement number CN220127732U discloses a circular saw, in which the saw blade can rotate relative to the scale plate through the support platform, thereby changing the sawing position of the saw blade.

[0006] like Figure 1 and Figure 2 As shown, after the clamping assembly on the processing table 1 clamps the material, the material remains stationary. By rotating the angle of the sawing head 10, the material can be sawed at different angles.

[0007] When sawing materials, in order to ensure the quality of the sawn surface, it is necessary to control the starting angle of the saw blade. The starting angle refers to the tilt angle between the saw blade and the workpiece surface, which is usually around 15°. Figure 1 The included angle is shown in the figure; after the clamping component 2 fixes the material, the position of the material remains unchanged. After the saw head 10 rotates by an angle, as shown in the figure. Figure 2 As shown, sawing the material again will cause the sawing angle to change, affecting the sawing quality of the material surface. The internal cause of the change in sawing quality is that the first clamping plate 5 of the clamping assembly 2 cannot move.

[0008] Therefore, designing a circular saw with an adjustable cutting angle that ensures a stable starting angle has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0009] The application provides a circular saw machine with adjustable sawing angle to at least solve the above technical problems in the prior art.

[0010] The application provides a circular saw machine with adjustable sawing angle, which is installed on a machining table and comprises a sliding block, a first pushing mechanism for driving the sliding block to slide along a first direction, and a first clamping plate.

[0011] The first clamping plate is arranged on the sliding block and is slidably connected with the sliding block along a second direction, and the first direction and the second direction are perpendicular to each other on the same horizontal plane.

[0012] The application further provides a positioning seat which is rotatably arranged on the machining table.

[0013] The application further provides an extension plate which is horizontally arranged and fixedly connected with the positioning seat, and the projection of the first clamping plate on the extension plate forms a non-right angle with the extension plate.

[0014] The application further provides a sawing head which is rotatably arranged on the positioning seat.

[0015] The application further provides a second clamping plate and a second pushing mechanism for driving the second clamping plate to move along the first direction, and the second clamping plate and the first clamping plate form a clamping assembly for clamping and fixing materials.

[0016] In an embodiment, a rotating rod which extends vertically downward through the machining table is fixedly arranged on the positioning seat, and the extension plate is arranged below the machining table and is fixedly connected with the rotating rod.

[0017] In an embodiment, a sawing groove which extends through the upper wall and the lower wall of the machining table is arranged on the machining table, and the first clamping plate and the extension plate are hingedly connected through a connecting rod.

[0018] In an embodiment, an avoiding groove which extends upward and downward is arranged on the extension plate and is located directly below the saw blade of the sawing head.

[0019] In an embodiment, a scale disc is arranged on the machining table, the scale disc is arc-shaped and is fixedly arranged on the machining table, the rotation center of the scale disc coincides with the axis of the rotating rod, and a pointer is fixedly arranged on the positioning seat and is used for pointing to the scale line on the scale disc.

[0020] In an embodiment, a sliding groove which extends along the first direction is arranged on the upper wall of the machining table, and the sliding block is arranged in the sliding groove and is slidably connected with the inner wall of the sliding groove.

[0021] In an embodiment, the first pushing mechanism comprises a motor and a lead screw, the lead screw is rotatably arranged in the sliding groove along the first direction, the sliding block is threadedly connected with the lead screw, the motor is fixedly arranged on the machining table, and the output shaft of the motor is fixedly connected with the lead screw.

[0022] In an embodiment, the slider top wall is provided with a guide groove arranged along the second direction, and the first clamping plate bottom wall is provided with a sliding rib, the sliding rib is inserted into the guide groove, and the sliding rib side wall is in sliding connection with the guide groove inner wall.

[0023] In an embodiment, the second clamping plate is arranged along the second direction, and the second pushing mechanism comprises a pushing seat, a screw rod and a push rod, the pushing seat is fixedly installed on the machining table, the screw rod is arranged along the first direction, the screw rod is in threaded connection with the pushing seat, the screw rod side wall is provided with a through hole arranged along the screw rod radial direction, the push rod is inserted into the through hole to push the screw rod to rotate, and the screw rod end wall is in rotational connection with the second clamping plate.

[0024] In an embodiment, the second clamping plate is provided with a clamping groove arranged along the second direction, the clamping groove is provided with a compensation plate in sliding connection along the second direction, the second clamping plate side wall is provided with a positioning hole in communication with the clamping groove, the positioning hole is in threaded connection with a positioning bolt, and the positioning bolt end wall is in abutment with the compensation plate to fix the compensation plate and the second clamping plate.

[0025] Compared with the prior art, the circular saw machine with adjustable sawing angle has the following beneficial effects:

[0026] The first pushing mechanism is used to drive the slider to move in the first direction, the first clamping plate is in sliding connection with the slider along the second direction, the first clamping plate and the extension plate form a non-right angle relationship, at this time, the first clamping plate slides on the slider along the second direction, thereby pushing the extension plate and the positioning seat to rotate on the machining table, since the sawing head is installed on the positioning seat, the angle adjustment of the saw blade on the sawing head can be realized, and when the slider stops on the machining table, the deflection angle of the saw blade on the sawing head is fixed; the second pushing mechanism pushes the second clamping plate to cooperate with the first clamping plate to clamp the material, when the saw blade of the sawing head moves downward, the sawing of the material can be completed; wherein, the first clamping plate position is synchronously adjusted while the saw blade on the sawing head is deflected, thereby the clamping position of the material can be changed, the sawing angle during the sawing of the material is ensured to be within a reasonable range, and the sawing quality of the material can be ensured.

[0027] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and other objects, features and advantages of the example embodiments of the present application will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which:

[0029] In the drawings, identical or corresponding reference numerals indicate identical or corresponding parts.

[0030] Figure 1 A prior art schematic diagram is shown Figure 1 ;

[0031] Figure 2 A prior art schematic diagram is shown Figure 2 ;

[0032] Figure 3 A schematic diagram of the overall structure of the present application is shown;

[0033] Figure 4 A first expanded schematic diagram of the present application is shown;

[0034] Figure 5 A partial enlarged schematic diagram of the structure of the present application is shown;

[0035] Figure 6 A second expanded schematic diagram of the present application is shown;

[0036] Figure 7 A third expanded schematic diagram of the present application is shown.

[0037] Explanation of reference numerals in the drawings:

[0038] X, first direction; Y, second direction;

[0039] 1, processing table; 10, sawing head; 101, rotating shaft; 102, handle; 103, dial; 104, pointer; 11, sawing groove; 12, sliding groove;

[0040] 2, clamping assembly;

[0041] 3, sliding block; 31, guide groove;

[0042] 4, first pushing mechanism; 41, motor; 42, screw rod;

[0043] 5, first clamping plate; 51, connecting rod; 52, sliding rib;

[0044] 6, positioning seat; 61, rotating rod;

[0045] 7, extension plate; 71, avoiding groove; 72, supporting plate;

[0046] 8, second clamping plate; 81, clamping groove; 811, positioning hole; 82, compensation plate; 83, positioning bolt;

[0047] 9, second pushing mechanism; 91, pushing seat; 92, screw rod; 921, through hole; 93, pushing rod. DETAILED DESCRIPTION

[0048] In order to make the purposes, characteristics and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely 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, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0049] As shown in Figure 3 and Figure 4 , including a processing table 1, wherein the processing table 1 is rotatably connected with a positioning seat 6, the positioning seat 6 is rotatably connected with a sawing head 10 through a rotating shaft 101, specifically, the sawing head 10 is fixedly installed with a handle 102, the sawing head 10 can be pressed downward by using the handle 102, so as to be able to saw the material fixed on the processing table 1.

[0050] Here, the direction is defined first, the width direction of the processing table 1 is defined as the first direction X, the length direction of the processing table 1 is defined as the second direction Y, wherein the first direction X and the second direction Y are perpendicular to each other, the processing table 1 is horizontally arranged, the rotating shaft 101 is arranged along the first direction X, when the handle 102 exerts a downward pressure on the sawing head 10, the sawing head 10 rotates downward around the rotating shaft 101, wherein the saw blade on the sawing head 10 can complete the sawing of the material. When the handle 102 is subjected to an upward lifting torque, the sawing head 10 is lifted upward around the rotating shaft 101 and separated from the material.

[0051] During the processing, in order to be able to fix the material on the processing table 1, the prior art, as shown in Figure 1 , further comprises a clamping assembly 2, wherein the clamping assembly 2 comprises a first clamping plate 5 fixedly installed on the processing table 1, wherein the first clamping plate 5 is arranged along the second direction Y, further comprising a second clamping plate 8, wherein the second clamping plate 8 is slidably connected along the first direction X, during use, the material is placed between the first clamping plate 5 and the second clamping plate 8, then the position of the second clamping plate 8 is changed, and the cooperation of the first clamping plate 5 and the second clamping plate 8 can realize the fixation of the material.

[0052] In the prior art, the positioning seat 6 is fixedly installed on the processing table 1, wherein the projection of the saw blade on the sawing head 10 on the processing table 1 is perpendicular to the second direction Y, and the saw blade on the sawing head 10 can realize the vertical sawing of the material.

[0053] With the diversification of the sawing requirements of the material, the sawing opening of the material needs to have a certain inclination angle, so as to realize the mutual assembly between the materials, in order to solve this problem, the positioning seat 6 in the prior art is designed to be rotationally connected with the machining table 1, by rotating the positioning seat 6 on the machining table 1, and then changing the position of the saw blade on the sawing head 10, at this time, the projection of the saw blade on the machining table 1 and the second direction Y can form an included angle, since the position of the first clamping plate 5 is fixed, at this time, the clamped material is still placed along the second direction Y, so that the sawing of the material at different angles can be realized.

[0054] It is worth noting here that the positioning seat 6 needs to be fixed with the machining table 1 during the sawing process of the material, to prevent the saw blade on the sawing head 10 from deflecting during the sawing process of the material.

[0055] Here, a term "sawing starting angle" is introduced, the sawing starting angle refers to the inclination angle between the saw blade and the surface of the workpiece, which is usually about 15° or so, as shown by the dashed line in Figure 1 , the selection of the sawing starting angle has an important influence on the sawing process, the selection of the sawing starting angle is to ensure the smoothness of the sawing process, if the angle is too large, the sawing process may be unstable, and the saw teeth are easy to be clamped by the edge of the workpiece, resulting in cracking; if the angle is too small, the number of teeth of the saw teeth and the workpiece is removed at the same time, it is not easy to cut into the material, and multiple sawing is easy to deviate, affecting the quality of the surface of the workpiece.

[0056] In order to be able to complete the sawing of the material at different angles, at this time, the positioning seat 6 will rotate on the machining table 1, as shown in Figure 2 , at this time, the entire sawing head 10 will be deflected, under normal circumstances, the first clamping plate 5 is located below Figure 2 , after the shift of the sawing head 10, the saw blade is deflected, at this time, the position of the first clamping plate 5 cannot be moved, the relative position of the material and the sawing head 10 is changed, at this time, the sawing starting angle of the saw blade will change, thereby affecting the quality of the sawing of the material, in order to be able to guarantee the sawing quality of the material, the position of the first clamping plate 5 needs to be adaptively changed with the movement of the sawing head 10, from the first clamping plate 5 position below Figure 2 to the first clamping plate 5 position above Figure 2 .

[0057] In order to solve this problem, in the embodiment, as shown in Figure 3 , Figure 4 and Figure 6As shown, the first clamping plate 5 is arranged on the slider 3 and is in sliding connection with the slider 3 along the second direction Y, the positioning seat 6 is fixedly connected with the extension plate 7 arranged along the horizontal direction, wherein the extension plate 7 is hinged with the first clamping plate 5, the saw blade of the sawing head 10 is located directly above the extension plate 7, and the projection of the first clamping plate 5 on the extension plate 7 forms a non-right angle with the extension plate 7.

[0058] Specifically, as shown in the figure, Figure 4 the bottom wall of the positioning seat 6 is fixedly provided with a rotating rod 61 extending vertically downward, wherein the rotating rod 61 is rotatably connected with the machining table 1 through a bearing.

[0059] When the first pushing mechanism 4 drives the slider 3 to move along the first direction X, the first clamping plate 5 will move synchronously along the first direction X at this time, since the positioning seat 6 is rotatably connected with the machining table 1 through the rotating rod 61, and the angle formed by the extension plate 7 and the first clamping plate 5 is a non-right angle, at this time, the first clamping plate 5 will drive the extension plate 7 to swing around the axis of the rotating rod 61, and at the same time, the positioning seat 6 and the sawing head 10 will be deflected through the rotating rod 61, changing the relative angle between the saw blade and the material, so that the sawing of the material at any angle can be realized, and at the same time, the swing of the extension plate 7 will push the first clamping plate 5 to slide along the second direction Y, and the position of the first clamping plate 5 will be adaptively adjusted.

[0060] It is worth mentioning here that any angle refers to between 0°-90°, but not including 0° and 90°, and the specific cutting angle can be adaptively adjusted.

[0061] When the first pushing mechanism 4 restricts the sliding of the slider 3 in the first direction X, the slider 3 and the machining table 1 remain relatively stationary, the angle formed by the first clamping plate 5 and the extension plate 7 no longer changes, so that the positioning seat 6 and the machining table 1 remain relatively stationary, the fixation of the positioning seat 6 is completed, and the deflection of the positioning seat 6 during processing is avoided.

[0062] In order to realize the stable sliding of the slider 3, in the embodiment, as shown in the figures, Figure 4 and Figure 6 the top wall of the machining table 1 is provided with a downward recessed sliding groove 12, wherein the sliding groove 12 is arranged along the first direction X, the slider 3 is slidingly installed inside the sliding groove 12, the first pushing mechanism 4 includes a motor 41 and a lead screw 42, wherein the lead screw 42 is arranged along the first direction X and is installed inside the sliding groove 12, the lead screw 42 is in threaded connection with the slider 3, the side wall of the slider 3 abuts against the inner wall of the sliding groove 12 to limit the overturning of the slider 3, the motor 41 is fixedly installed on the machining table 1, and the output end of the motor 41 is fixedly connected with the lead screw 42.

[0063] With the above settings, the motor 41 can drive the lead screw 42 to rotate. Since the slider 3 is threadedly connected to the lead screw 42, the slider 3 slides in the slide groove 12, thereby driving the first clamping plate 5 to move along the first direction X. When the motor 41 stops running, the threaded connection between the lead screw 42 and the slider 3 can keep the slider 3 relatively stationary with respect to the processing table 1, improving the stability of the slider 3. The motor 41 is a stepper motor, and the forward and reverse rotation of the motor 41 can realize the forward or backward movement of the slider 3.

[0064] It is worth noting that the lead screw 42 is hidden below the table surface of the processing table 1, which can prevent the material from contacting the lead screw 42 and affecting the placement of the material.

[0065] When the saw head 10 is pressed downwards by the handle 102, the saw blade on the saw head 10 is prone to contacting the surface of the processing table 1, thereby damaging the processing table 1. Therefore, in this embodiment, as Figure 4 As shown, the processing table 1 is provided with a sawing groove 11 that runs vertically through the table. During the material sawing process, the saw blade of the saw head 10 is located in the sawing groove 11, which can complete the cutting of the material without damaging the table surface of the processing table 1.

[0066] To avoid the extension plate 7 affecting the placement of materials, in this embodiment, as... Figure 3 and Figure 6 As shown, the rotating rod 61 passes through the processing table 1 and extends vertically downward. The extension plate 7 is installed below the processing table 1 and is fixedly connected to the rotating rod 61. It also includes a connecting rod 51, wherein the connecting rod 51 is vertically arranged, one end of the connecting rod 51 is fixedly connected to the first clamping plate 5, and the other end of the connecting rod 51 is hinged to the extension plate 7.

[0067] Specifically, such as Figure 6 As shown, the extension plate 7 is provided with a vertically penetrating clearance groove 71, wherein the clearance groove 71 is located directly below the saw blade. When the saw head 10 presses down to complete the sawing of the material, the saw blade is inserted into the clearance groove 71.

[0068] In order to prevent the connecting rod 51 from interfering with the saw blade's cutting of the material, in this embodiment, as shown in the figure, the side wall of the extension plate 7 is provided with a support plate 72, wherein the connecting rod 51 is installed on the support plate 72.

[0069] In order to observe the deflection angle of the positioning seat 6, in this embodiment, as follows: Figure 5 As shown, an arc-shaped dial 103 is fixed on the processing table 1, wherein the rotation center of the dial 103 coincides with the axis of the rotating rod 61, and a pointer 104 is provided on the side wall of the positioning seat 6. The pointer 104 points to the scale line of the dial 103 to show the deflection angle of the positioning seat 6.

[0070] To achieve the installation of the first clamping plate 5, in this embodiment, as follows:Figure 6 As shown in the figure, the top wall of the sliding block 3 is provided with a guide groove 31 arranged along the second direction Y, and the bottom wall of the first clamping plate 5 is provided with a sliding rib 52 which is inserted into the guide groove 31, and the side wall of the sliding rib 52 is in sliding connection with the inner wall of the guide groove 31.

[0071] In order to be able to clamp the material, in the embodiment, as shown in the figure, Figure 4 and Figure 7 As shown in the figure, the second clamping plate 8 is arranged along the second direction Y, and the second pushing mechanism 9 is arranged to push the second clamping plate 8 to move along the first direction X, wherein the second pushing mechanism 9 comprises a pushing seat 91, a screw rod 92 and a pushing rod 93, wherein the pushing seat 91 is fixed on the table top of the machining table 1 by bolts, the screw rod 92 is arranged along the first direction X, the screw rod 92 is in threaded connection with the pushing seat 91, the screw rod 92 is in rotational connection with the second clamping plate 8, and the end of the screw rod 92 away from the second clamping plate 8 is provided with a through hole 921 arranged along the radial direction, and the pushing rod 93 is inserted into the through hole 921 so as to rotate the screw rod 92, thereby adjusting the position of the second clamping plate 8, so that the second clamping plate 8 cooperates with the first clamping plate 5 to clamp the material.

[0072] Since the sawing head 10 rotates with the positioning seat 6 to adjust the angle of the saw blade, when the sawing head 10 rotates by an angle, the second clamping plate 8 may be too long to cause the saw blade to touch the second clamping plate 8, therefore, in the embodiment, as shown in the figure, Figure 7 the second clamping plate 8 is provided with a clamping groove 81 arranged along the second direction Y, the clamping groove 81 is provided with a compensation plate 82 which is in sliding connection along the second direction Y, the second clamping plate 8 is provided with a positioning hole 811 which is in communication with the clamping groove 81, and the positioning hole 811 is in threaded connection with a positioning bolt 83, by rotating the positioning bolt 83, the end wall of the positioning bolt 83 abuts against the compensation plate 82, thereby fixing the compensation plate 82 in the clamping groove 81.

[0073] During the sawing process of the material, the position of the compensation plate 82 can be adjusted appropriately, thereby reducing the risk of the saw blade touching the second clamping plate 8.

[0074] In another embodiment, the range of the sawing groove 11 can be expanded, so that the positioning seat 6 can rotate between 0°-180°, and 0°, 90° and 180° need to be excluded, so that the material can be sawed at any angle without the need to adjust the material.

[0075] It is worth mentioning that when the extension plate 7 is at the 90° point, the first clamping plate 5 is difficult to push the extension plate 7 to swing around the rotating rod 61, and the 90° position at this time is a dead point, therefore, the figure gives the optimal scheme, so that the extension plate 7 swings within the range between 0° and 90°, thereby adjusting the angle of the saw blade and completing the sawing of the material.

[0076] It should be understood that the various forms of flow shown above can be used to reorder, add, or delete steps. For example, the steps described in the present disclosure can be performed in parallel, in series, or in a different order, as long as the desired results of the technical solutions of the present disclosure can be achieved, which is not limited herein.

[0077] In addition, the terms "first", "second", are only used for descriptive purposes and should not be construed as indicating or implying relative importance or an implied indication of the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0078] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A circular saw machine with adjustable sawing angle, mounted on a working table (1), characterized in that, The first pushing mechanism (4) drives the slider (3) to slide along the first direction (X), the slider (3) is in sliding connection with the machining table (1); The first clamping plate (5) is arranged on the slider (3), the first clamping plate (5) is in sliding connection with the slider (3) along the second direction (Y), the first direction (X) and the second direction (Y) are in the same horizontal plane and perpendicular to each other; The positioning seat (6) is rotatably installed on the machining table (1); The extension plate (7) is horizontally arranged and fixedly connected with the positioning seat (6), the projection of the first clamping plate (5) on the extension plate (7) forms a non-right angle with the extension plate (7), and the extension plate (7) is hinged with the first clamping plate (5); The sawing head (10) is rotatably installed on the positioning seat (6); The second clamping plate (8) and the second pushing mechanism (9) for driving the second clamping plate (8) to move along the first direction (X) are further included, and the second clamping plate (8) and the first clamping plate (5) form a clamping assembly (2) for clamping and fixing the material.

2. A circular saw machine with adjustable sawing angle according to claim 1, characterized in that, The rotating rod (61) vertically downwardly extending through the machining table (1) is fixedly arranged on the positioning seat (6), and the extension plate (7) is located below the machining table (1) and fixedly connected with the rotating rod (61).

3. A circular saw machine with adjustable sawing angle according to claim 2, characterized in that, The sawing groove (11) penetrating through the upper wall and the lower wall of the machining table (1) is arranged on the machining table (1), and the first clamping plate (5) is hinged with the extension plate (7) through the connecting rod (51).

4. A circular saw machine with adjustable sawing angle according to claim 3, characterized in that, The extension plate (7) is provided with an avoiding groove (71) penetrating upward and downward, and the avoiding groove (71) is located directly below the saw blade of the sawing head (10).

5. A circular saw machine according to claim 2 or 4, characterized in that The scale disc (103) is arc-shaped and fixedly installed on the machining table (1), the rotation center of the scale disc (103) coincides with the axis of the rotating rod (61), and the pointer (104) for pointing to the scale line on the scale disc (103) is fixedly arranged on the positioning seat (6).

6. An angle-adjustable circular sawing machine according to claim 2, characterized in that The upper wall of the machining table (1) is provided with the sliding groove (12) arranged along the first direction (X), the slider (3) is arranged in the sliding groove (12), and the side wall of the slider (3) is in sliding connection with the inner wall of the sliding groove (12).

7. A circular saw machine with adjustable sawing angle according to claim 6, characterized in that The first pushing mechanism (4) includes the motor (41) and the lead screw (42), the lead screw (42) is rotatably arranged in the sliding groove (12) along the first direction (X), the slider (3) is in threaded connection with the lead screw (42), the motor (41) is fixedly installed on the machining table (1), and the output shaft of the motor (41) is fixedly connected with the lead screw (42).

8. A circular saw machine according to claim 6 or 7, characterized in that The top wall of the slider (3) is provided with the guide groove (31) arranged along the second direction (Y), the bottom wall of the first clamping plate (5) is provided with the sliding rib (52), the sliding rib (52) is inserted into the guide groove (31), and the side wall of the sliding rib (52) is in sliding connection with the inner wall of the guide groove (31).

9. A circular saw machine with adjustable sawing angle according to claim 8, characterized in that, The second clamping plate (8) is arranged along the second direction (Y), and the second pushing mechanism (9) comprises a pushing seat (91), a screw rod (92) and a pushing lever (93). The pushing seat (91) is fixedly arranged on the machining table (1). The screw rod (92) is arranged along the first direction (X) and is threadedly connected with the pushing seat (91). The side wall of the screw rod (92) is provided with a through hole (921) arranged along the radial direction of the screw rod (92). The pushing lever (93) is inserted into the through hole (921) to push the screw rod (92) to rotate. The end wall of the screw rod (92) is rotationally connected with the second clamping plate (8).

10. A circular saw machine with adjustable sawing angle according to claim 9, characterized in that, The second clamping plate (8) is provided with a clamping groove (81) arranged along the second direction (Y). The clamping groove (81) is provided with a compensation plate (82) slidably connected along the second direction (Y). The side wall of the second clamping plate (8) is provided with a positioning hole (811) in communication with the clamping groove (81). The positioning hole (811) is threadedly connected with a positioning bolt (83). The end wall of the positioning bolt (83) abuts against the compensation plate (82) to fix the compensation plate (82) and the second clamping plate (8).

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