A saw blade clamping mechanism and an electric saw

Abstract

The present invention provides a saw blade clamping mechanism and an electric saw thereof, belonging to the technical field of electric saws, including: a rotating column, on the wall surface of the middle section of the rotating column, a plurality of protrusions protruding from the wall surface of the rotating column are arranged; a pair of assembly sleeves, on the inner wall of the assembly sleeve, a stop port adapted thereto is provided, and the pair of assembly sleeves are respectively displaceably assembled on both sides of the rotating column in a buckling manner, and the pair of assembly sleeves are respectively clamped and fastened by corresponding clamping components, and a protruding stop platform is arranged at the inner end of the assembly sleeve, and the stop platforms are located between two adjacent ones. The present invention solves the problem that during assembly clamping, mainly the side where the inner clamping disc is fixedly connected bears the load when sawing a workpiece to be sawn, resulting in uneven load distribution, thus causing intense oscillation of the saw blade during sawing, resulting in an uneven saw cut of the workpiece to be sawn, and the saw surface needs to be manually processed by workers after sawing.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric saws, and particularly relates to a saw blade clamping mechanism and an electric saw thereof. Background Art

[0002] An electric saw, also known as a "power saw", greatly saves the time and labor consumed in processing materials. An electric saw uses electricity as an energy source and is a processing tool for processing wood, stone, steel, etc. The saw blade is usually made of tool steel and has various shapes, including circular ones.

[0003] An electric saw can process columnar parts. Usually, the electric saw uses a motor to drive the rotation of a rotating column that assembles the saw blade, and the saw blade is fastened to the rotating column via a matching clamping component. Currently, the saw blade clamping component usually has an inner clamping disk fixedly connected to one side of the rotating column and an outer clamping disk that can be disassembled and assembled via bolts on the other side. The inner clamping disk is usually provided with protrusions for buckling the saw blade to drive the saw blade to rotate. Such assembly and clamping will cause the side fixedly connected to the inner clamping disk to bear the main load when sawing the workpiece to be sawn, resulting in uneven load distribution. Therefore, during sawing, the vibration of the saw blade is intense, resulting in an uneven saw cut on the workpiece to be sawn, and the saw surface needs to be manually processed by the staff after sawing.

[0004] In order to ensure the firm assembly of the saw blade, ensure that the load generated during sawing is evenly distributed to each part of the rotating column, and reduce vibration during sawing work, thereby improving the smoothness and accuracy of the saw cut plane when processing columnar parts, a saw blade clamping mechanism and an electric saw thereof are proposed. Summary of the Invention

[0005] The present invention provides a saw blade clamping mechanism and an electric saw thereof, aiming to solve the problems existing in the prior art.

[0006] An embodiment of the present invention provides a saw blade clamping mechanism, including:

[0007] A rotating column, on the wall surface of the middle section of the rotating column, a plurality of strip-shaped blocks protruding from the wall surface of the rotating column are arranged;

[0008] A pair of assembly sleeves, on the inner wall of the assembly sleeves, a positioning opening adapted to the strip-shaped blocks is provided. The pair of assembly sleeves are respectively displaceably assembled on both sides of the rotating column in a buckling manner. The pair of assembly sleeves are respectively clamped and fastened via a matching clamping component. At the inner end of the assembly sleeve facing inward, a protruding positioning platform is arranged. The positioning platform is located between two strip-shaped blocks close to each other. The circumferential span of the positioning platform is the same as the length of the short side thereof, and the outer wall surface of the positioning platform is inclined;

[0009] A saw blade, with the middle of the saw blade having projections protruding from both sides of the saw blade. An assembly hole is provided in the middle of the projection. Matching displacement ports are respectively provided at positions of the assembly hole that match the strip-shaped blocks. Inclined edges that match the stop platforms are reserved on both sides of the displacement port. The saw blade is placed in the middle of the rotating column. A pair of assembly sleeves are closely abutted against both sides of the saw blade. The stop platforms are respectively closely abutted against the inclined edges on both sides of the displacement port.

[0010] Further, it further includes an earthquake-resistant component, including a pair of placement sleeves fixedly connected to the outer wall surfaces of the pair of assembly sleeves. The cross-section of the placement sleeve is arranged in an "n" shape. Matching iron beads are added in the placement sleeve. The middle edges of the placement sleeves are respectively connected to matching isolation sheets. The ends of the placement sleeves close to the saw blade are respectively pressed against the projections of the saw blade.

[0011] Further, the clamping component includes a clamping sleeve. The clamping sleeve is fixedly connected to the outer wall surfaces of both sides of the rotating column by screwing. The end of the clamping sleeve close to the saw blade is pressed against the end of the matching assembly sleeve away from the saw blade. Matching stop sleeves are respectively provided on the outer wall surfaces of the clamping sleeves. The ends of the stop sleeves close to the saw blade extend to protrude from the end of the clamping sleeve close to the saw blade. The ends of the stop sleeves close to the saw blade are respectively pressed against the isolation sheets of the matching earthquake-resistant components.

[0012] Further, the sides of the clamping sleeves away from the saw blade are respectively connected to matching clamping wire caps. The ends of the clamping wire caps close to the saw blade are respectively pressed against the walls of the matching clamping sleeves.

[0013] Further, the tightening direction of the clamping sleeve and the clamping wire cap is the same as the rotation direction of the rotating column.

[0014] A power saw, including the saw blade clamping mechanism described in any of the above embodiments, and,

[0015] A supporting base, with supporting pieces fixedly connected to the supporting base and rotatably connected to both ends of the rotating column respectively. A motor is provided on the supporting base. One end of the rotating column extends through the supporting piece and is connected to the matching motor through a belt drive.

[0016] Further, the extended end of the rotating column is rotatably installed on a matching supporting piece.

[0017] Further, matching pressing pieces are respectively provided on the supporting piece and the supporting piece that matches the supporting piece towards the top. The top of the pressing piece is bent towards the tail and a matching pressing wheel is rotatably installed.

[0018] Further, a matching traction rod is fixedly connected between the pressing pieces.

[0019] The beneficial effects of the present invention are:

[0020] 1. When assembling the present invention, through the assembly hole arranged in the middle of the saw blade, and the cooperation of the displacement port, the rotating column and the strip-shaped block, the saw blade is placed in the middle of the rotating column; then, through the cooperation of the positioning port on the assembly sleeve and the strip-shaped block on the rotating column, a pair of assembly sleeves are respectively placed on both sides of the rotating column; then the saw blade is rotated so that the displacement ports on the saw blade respectively match the positioning platforms on the assembly sleeve, and then the assembly sleeve is controlled to make the positioning platforms respectively insert into the displacement ports of the saw blade, so as to achieve the purpose of clamping and pressing the saw blade; after that, the assembly sleeve is clamped and fixed by the clamping component to complete the assembly.

[0021] The assembly sleeve itself can be a clamping part or a pressing part. Under the function of a pair of assembly sleeves, the purpose of clamping and force-applying extrusion buckling can be achieved. Therefore, the firmness of the saw blade assembly can be ensured while facilitating the assembly. During operation, the load borne by the saw blade can be evenly and timely applied to both sides of the rotating column through a number of equidistantly arranged positioning platforms and the clamping part of the assembly sleeve. Therefore, while facilitating the assembly and ensuring the firmness of the assembly, the load borne by the saw blade during operation can be evenly distributed to the rotating column, so as to reduce the oscillation frequency of the saw blade during operation, thereby improving the accuracy of the saw cut of the saw columnar part when the saw blade is working.

[0022] 2. The outer wall surface of the positioning platform on the assembly sleeve of the present invention is inclined, and inclined edges matching the positioning platform are reserved on both sides of the displacement port adapted to it. Therefore, after the assembly is completed, the positioning platform inserts into the displacement port and presses against both sides of the displacement port. When a pair of assembly sleeves firmly clamp the saw blade, the positioning platform can press and fasten the displacement port in the direction radially outward. Therefore, under the condition of clamping and fastening, the function of pressing and fastening in the direction radially outward can be obtained, thereby improving the clamping ability of the saw blade, ensuring the assembly fastening between the positioning platform and the displacement port, so that the saw blade can be better clamped and the saw blade is more stable during operation.

[0023] 3. The present invention further includes an anti-seismic component, which includes a pair of placement sleeves fixedly connected to the outer wall surfaces of a pair of assembly sleeves. The cross-section of the placement sleeve is arranged in an "n" shape, matching iron beads are added in the placement sleeve, the middle edges of the placement sleeves are respectively connected with matching isolation sheets, and the ends of the placement sleeves close to the saw blade respectively press against the convex pieces of the saw blade. Under the pressing and fastening function of the placement sleeve, the assembly of the saw blade can be made more firm. Through the function of the iron beads added in the placement sleeve, it can have a significant ability to weaken the oscillation. Therefore, it can have the ability to weaken the oscillation without affecting the operation of the saw blade, thereby improving the accuracy of the saw cut of the saw columnar part when the saw blade is working.

[0024] 4. The clamping assembly includes a clamping sleeve. The clamping sleeve is fixedly connected to the outer walls on both sides of the rotating column by threading. One end of the clamping sleeve close to the saw blade presses against one end of the matching assembly sleeve away from the saw blade. Matching stop sleeves are respectively arranged on the outer wall surfaces of the clamping sleeves. One end of the stop sleeve close to the saw blade extends beyond one end of the clamping sleeve close to the saw blade. One end of each stop sleeve close to the saw blade presses against the isolation piece of the matching shock-absorbing assembly. Through the function of the clamping sleeve, the purpose of clamping and fastening the assembly sleeve and the shock-absorbing assembly together can be achieved. Thus, while ensuring reliable assembly, the efficiency and simplicity of the present invention during assembly are improved.

[0025] 5. Both ends of the rotating column are respectively rotatably arranged on the matching supporting pieces. One end of the rotating column extends through the supporting piece and is connected to the matching motor through a belt drive. The extended end of the rotating column is rotatably arranged on the matching supporting piece. Through the arrangement of the supporting piece, a reliable support can be formed for one end of the rotating column extending through the supporting piece. Thus, while ensuring the rotation ability, the stability of the device assembly and operation is improved.

[0026] Due to the gradual deepening of the saw blade operation, the connection area between the sawn-off section and the main body gradually decreases, resulting in the inability to ensure the fastening of the sawn-off section. Therefore, when the sawn-off section is close to being completely sawn off, the oscillation and vibration frequencies are relatively intense. Therefore, pressing pieces are respectively arranged on the supporting piece and the matching supporting piece, and the head of the pressing piece is bent towards the bottom and rotatably arranged with the matching pressing wheel. During sawing, the pressing wheel is controlled to be arranged with a gap from the workpiece to be sawn. When the workpiece to be sawn is close to being completely sawn off, for example, when it exceeds 1 / 2, the pressing wheel is controlled to press against the sawn-off section of the workpiece to be sawn. In this way, the oscillation and vibration frequencies of the sawn-off section of the workpiece to be sawn are reduced, thereby ensuring the stability of the sawn-off section and improving the smoothness and accuracy of the saw cut plane of the workpiece to be sawn.

[0027] Other features and advantages of the present invention will be described in the following description. And, partly, they will become obvious from the description or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the description and the drawings. Brief Description of the Drawings

[0028] The drawings are used to provide a further understanding of the present invention and constitute a part of the description. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0029] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0030] Figure 2 is a schematic structural diagram of the rotating column of an embodiment of the present invention;

[0031] Figure 3 In an embodiment of the present inventionFigure 2 Schematic cross-sectional structure diagram;

[0032] Figure 4 In the embodiment of the present invention Figure 2 Schematic cross-sectional structure diagram;

[0033] Figure 5 Schematic exploded structure diagram of the rotating column in the embodiment of the present invention;

[0034] Figure 6 Schematic structure diagram of the assembly sleeve in the embodiment of the present invention;

[0035] Figure 7 Schematic structure diagram of the saw blade in the embodiment of the present invention;

[0036] Figure 8 Schematic structure diagram of the seismic resistance component in the embodiment of the present invention;

[0037] Reference numerals: 12, rotating column; 122, strip-shaped block; 13, assembly sleeve; 132, stop port; 133, stop platform; 14, saw blade; 142, tab; 15, assembly hole; 152, displacement port; 16, seismic resistance component; 162, placement sleeve; 163, iron bead; 164, isolation sheet; 17, clamping sleeve; 18, stop sleeve; 19, clamping wire cap; 20, supporting sheet; 21, motor; 22, supporting piece; 23, pressing piece; 24, lower pressing wheel; 25, traction rod. Detailed implementation manners

[0038] In order to make the objectives, technical solutions and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] Refer to Figure 1-8 , an embodiment of the present invention provides a saw blade clamping mechanism and an electric saw thereof, including

[0040] A rotating column 12, on the wall surface of the middle section of the rotating column 12, a plurality of strip-shaped blocks 122 protruding from the wall surface of the rotating column 12 are arranged;

[0041] Assembly sleeve 13, a positioning opening 132 adapted to the strip-shaped block 122 is formed on the inner wall of the assembly sleeve 13. The orientation of the positioning opening 132 is adapted to the strip-shaped block 122. The pair of assembly sleeves 13 are respectively displaceably assembled on both sides of the rotating column 12 in a buckling manner. The pair of assembly sleeves 13 are respectively clamped and fastened by a matching clamping assembly. A protruding positioning platform 133 is arranged at the inner end of the assembly sleeve 13. The positioning platform 133 is located between two strip-shaped blocks 122 that are close to each other. The circumferential span of the positioning platform 133 is the same as the length of the short side of the strip-shaped block 122. The outer wall surface of the positioning platform 133 is inclined;

[0042] Saw blade 14, a lug 142 protruding from both sides of the saw blade 14 is arranged in the middle of the saw blade 14. An assembly hole 15 is formed in the middle of the lug 142. Matching displacement openings 152 are respectively arranged in the assembly hole 15 in a position matching the strip-shaped block 122. Inclined edges matching the positioning platform 133 are reserved on both sides of the displacement opening 152. The saw blade 14 is placed in the middle of the rotating column 12. The pair of assembly sleeves 13 are closely abutted against both sides of the saw blade 14. The positioning platform 133 is respectively closely abutted against the inclined edges on both sides of the displacement opening 152.

[0043] During the assembly of the present invention, through the assembly hole 15 arranged in the middle of the saw blade 14, and the cooperation of the displacement opening 152 with the rotating column 12 and the strip-shaped block 122, the saw blade 14 is placed in the middle of the rotating column 12; then, through the cooperation of the positioning opening 132 on the assembly sleeve 13 and the strip-shaped block 122 on the rotating column 12, the pair of assembly sleeves 13 are respectively placed on both sides of the rotating column 12; then the saw blade 14 is rotated to make the displacement openings 152 on the saw blade 14 respectively match the positioning platforms 133 on the assembly sleeve 13, and then the assembly sleeve 13 is controlled to make the positioning platforms 133 respectively inserted into the displacement openings 152 of the saw blade 14, so as to achieve the purpose of clamping and pressing the saw blade 14; then the assembly sleeve 13 is clamped and fastened by the clamping assembly to complete the assembly.

[0044] The assembly sleeve 13 itself can be a clamping part (the end of the assembly sleeve 13 close to the saw blade 14) or a pressing part (the positioning platform 133). Under the function of the pair of assembly sleeves 13, the purpose of clamping and force-applying extrusion buckling can be achieved. Therefore, the firmness of the assembly of the saw blade 14 can be ensured while facilitating the assembly. During operation, the load borne by the saw blade 14 can be evenly and timely applied to both sides of the rotating column 12 through a number of equidistantly arranged positioning platforms 133 and the clamping part of the assembly sleeve 13. Therefore, while facilitating the assembly and ensuring the firmness of the assembly, the load borne by the saw blade during operation can be evenly distributed to the rotating column 12, so as to reduce the oscillation frequency of the saw blade during operation, thereby improving the accuracy of the saw cut of the saw columnar part by the saw blade during operation.

[0045] The outer wall surface of the stop platform 133 on the assembly sleeve 13 is inclined, and inclined edges matching the stop platform 133 are reserved on both sides of the displacement opening 152 adapted thereto. Thus, after the assembly is completed, the stop platform 133 is inserted into the displacement opening 152 and pressed against both sides of the displacement opening 152. When the pair of assembly sleeves 13 firmly clamp the saw blade 14, the stop platform 133 can press and fasten the displacement opening 152 in the radially outward direction. Thus, under the condition of clamping and fastening, the function of pressing and fastening in the radially outward direction is obtained, thereby improving the clamping ability of the saw blade 14, ensuring the assembly fastening between the stop platform 133 and the displacement opening 152, enabling the saw blade 14 to be better clamped and making the saw blade 14 more stable during operation.

[0046] It further includes an earthquake-resistant component 16, which includes a pair of placement sleeves 162 fixedly connected to the outer wall surfaces of the pair of assembly sleeves 13. The cross-section of the placement sleeve 162 is arranged in an "n" shape. Matching iron beads 163 are added in the placement sleeve 162. The middle edges of the placement sleeve 162 are respectively connected with matching isolation sheets 164. The ends of the placement sleeve 162 close to the saw blade 14 are respectively pressed against the convex pieces 142 of the saw blade 14.

[0047] Under the pressing and fastening function of the placement sleeve 162, the assembly of the saw blade 14 can be made more reliable. Through the function of the iron beads 163 added in the placement sleeve 162, it can have a significant ability to weaken vibration. Thus, it can have the ability to weaken vibration without affecting the operation of the saw blade 14, thereby improving the accuracy of the saw cut of the columnar workpiece being sawed when the saw blade is working.

[0048] The clamping component includes a clamping sleeve 17. The clamping sleeve 17 is fixedly connected to the outer wall surfaces on both sides of the rotating column 12 by screwing. The end of the clamping sleeve 17 close to the saw blade 14 is pressed against the end of the matching assembly sleeve 13 away from the saw blade 14. Matching stop sleeves 18 are respectively arranged on the outer wall surfaces of the clamping sleeve 17. The ends of the stop sleeve 18 close to the saw blade 14 extend to protrude from the end of the clamping sleeve 17 close to the saw blade 14. The ends of the stop sleeve 18 close to the saw blade 14 are respectively pressed against the isolation sheets 164 of the matching earthquake-resistant component 16.

[0049] Through the function of the clamping sleeve 17, the purpose of clamping and fastening the assembly sleeve 13 and the earthquake-resistant component 16 together can be achieved. Thus, while ensuring reliable assembly, the high efficiency and simplicity of the present invention during assembly are improved.

[0050] On the side of the clamping sleeve 17 away from the saw blade 14, matching clamping wire caps 19 are respectively connected. The ends of the clamping wire caps 19 close to the saw blade 14 are respectively pressed against the wall surfaces of the matching clamping sleeve 17. The tightening directions of the clamping sleeve 17 and the clamping wire cap 19 are the same as the rotation direction of the rotating column 12.

[0051] A saw, comprising the saw blade clamping mechanism described in any of the above embodiments, and,

[0052] A supporting base, on which there are fixedly connected supporting pieces 20 respectively rotatably connected to both ends of the rotating column 12. A motor 21 is installed on the supporting base. One end of the rotating column 12 extends through the supporting piece 20 and is connected to the matching motor 21 through a belt drive. The extended end of the rotating column 12 is rotatably installed on the matching supporting piece 22.

[0053] By installing the supporting piece 22, a reliable support can be formed for the end of the rotating column 12 extending through the supporting piece 20, thereby ensuring the rotation ability and improving the assembly and working stability of the device.

[0054] On the supporting piece 22 and the supporting piece 20 matching with it, there are respectively installed matching pressing pieces 23 towards the top. The top of the pressing piece 23 is bent towards the tail and rotatably installed with a matching pressing wheel 24. A matching traction rod 25 is fixedly connected between the pressing pieces 23.

[0055] As the saw blade 14 works deeper, the connection area between the sawn-off section and the main body gradually decreases, resulting in the inability to ensure the fastening of the sawn-off section. Therefore, when the sawn-off section is nearly completely sawn off, the oscillation and vibration frequencies are relatively intense. Therefore, pressing pieces 23 are respectively installed on the supporting piece 22 and the matching supporting piece 20, and the head of the pressing piece 23 is bent towards the bottom and rotatably installed with a matching pressing wheel 24. During sawing, the pressing wheel 24 is installed with a gap from the workpiece to be sawn. When the workpiece to be sawn is nearly completely sawn off, for example, when it exceeds 1 / 2, the pressing wheel 24 is controlled to press against the sawn-off section of the workpiece to be sawn, so as to reduce the oscillation and vibration frequencies of the sawn-off section of the workpiece to be sawn, thereby ensuring the stability of the sawn-off section and improving the smoothness and accuracy of the sawing plane of the workpiece to be sawn.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A saw blade clamping mechanism, characterized in that, Comprising: A rotating column (12), on the wall surface of the middle section of the rotating column (12), a plurality of strip-shaped blocks (122) protruding from the wall surface of the rotating column (12) are arranged; A pair of assembly sleeves (13), on the inner wall of the assembly sleeves (13), a positioning opening (132) adapted to the strip-shaped block (122) is provided. The pair of assembly sleeves (13) are respectively displaceably assembled on both sides of the rotating column (12) in a snap-fit manner. The pair of assembly sleeves (13) are respectively clamped and fastened by an adapted clamping assembly. An outwardly protruding positioning platform (133) is arranged at the inner end of the assembly sleeve (13). The positioning platform (133) is located between two strip-shaped blocks (122) close to each other. The circumferential span of the positioning platform (133) is the same as the length of the short side of the strip-shaped block (122). The outer wall surface of the positioning platform (133) is inclined; A saw blade (14), in the middle of the saw blade (14), convex pieces (142) protruding from both sides of the saw blade (14) are arranged. An assembly hole (15) is provided in the middle of the convex piece (142). Matching displacement openings (152) are respectively arranged at positions where the assembly hole (15) matches the strip-shaped block (122). Inclined edges matching the positioning platform (133) are reserved on both sides of the displacement opening (152). The saw blade (14) is placed in the middle of the rotating column (12). The pair of assembly sleeves (13) are closely abutted against both sides of the saw blade (14). The positioning platform (133) is respectively closely abutted against the inclined edges on both sides of the displacement opening (152).

2. The saw blade clamping mechanism according to claim 1, characterized in that: It further includes a shock-resistant assembly (16), including a pair of placement sleeves (162) fixedly connected to the outer wall surfaces of the pair of assembly sleeves (13). The cross-section of the placement sleeve (162) is arranged in an "n" shape. Matching iron beads (163) are added in the placement sleeve (162). The middle edges of the placement sleeves (162) are respectively connected to matching isolation sheets (164). The ends of the placement sleeves (162) close to the saw blade (14) are respectively pressed against the convex pieces (142) of the saw blade (14).

3. The saw blade clamping mechanism according to claim 2, characterized in that: The clamping assembly includes a clamping sleeve (17). The clamping sleeve (17) is fixedly connected to the outer wall surfaces of both sides of the rotating column (12) by screw connection. The end of the clamping sleeve (17) close to the saw blade (14) is pressed against the end of the matching assembly sleeve (13) away from the saw blade (14). Matching positioning sleeves (18) are respectively arranged on the outer wall surfaces of the clamping sleeves (17). The end of the positioning sleeve (18) close to the saw blade (14) extends to protrude from the end of the clamping sleeve (17) close to the saw blade (14). The ends of the positioning sleeves (18) close to the saw blade (14) are respectively pressed against the isolation sheets (164) of the matching shock-resistant assembly (16).

4. The saw blade clamping mechanism according to claim 3, characterized in that: On the side of the clamping sleeve (17) away from the saw blade (14), matching clamping wire caps (19) are respectively connected. The ends of the clamping wire caps (19) close to the saw blade (14) are respectively pressed against the wall surfaces of the matching clamping sleeves (17).

5. The saw blade clamping mechanism according to claim 4, characterized in that: The tightening direction of the clamping sleeve (17) and the clamping wire cap (19) is the same as the rotation direction of the rotating column (12).

6. A power saw, characterized in that: Including the saw blade clamping mechanism according to any one of claims 1-5, and a supporting base, on which supporting pieces (20) are fixedly connected to both ends of the rotating column (12) in a rotating manner, a motor (21) is installed on the supporting base, and one end of the rotating column (12) extends through the supporting piece (20) and is connected to the matching motor (21) through a belt drive.

7. The power saw according to claim 6, characterized in that: The extended end of the rotating column (12) is rotatably installed on a matching supporting piece (22).

8. The power saw according to claim 7, characterized in that: On the supporting piece (22) and the supporting piece (20) matching with the supporting piece (22), matching pressing pieces (23) are respectively installed towards the top, and the top of the pressing piece (23) is bent towards the tail and a matching pressing wheel (24) is rotatably installed.

9. The power saw according to claim 8, characterized in that: A matching traction rod (25) is fixedly connected between the pressing pieces (23).

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