Shock-absorbing multipurpose saw with quick-changing function

Abstract

The invention relates to the technical field of damping multi-purpose saws, and discloses a damping multi-purpose saw with a quick change function, comprising: a machine body for bearing and mounting each part of the multi-purpose saw; the tool bit is used for cutting various materials; the grip is arranged on the inner wall of the machine body and used for connecting and fixing components in the machine body; the damping connecting rod is arranged on the grip, and the damping connecting rod is used for connecting the grip with the inner wall of the machine body; the motor is arranged on the inner wall of the machine body, and the motor is used for driving; the driving mechanism is arranged on the inner wall of the machine body, and the driving mechanism is used for converting rotating operation into driving telescopic force. According to the shock-absorbing multi-purpose saw with the quick-changing function, through the linkage design of the driving mechanism and the adaptive mechanism, for example, a pulling buckle is rotated to drive a tensioning rod, a steel ball is locked and the like, the tool bit can be mounted and dismounted only through the rotation or pressing action, additional tools are not needed, and the operation efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of shock-absorbing multi-purpose saws, in particular to a shock-absorbing multi-purpose saw with a quick-change function. Background Art

[0002] A multi-purpose saw is a multi-purpose sawing tool or equipment that plays an important role in different fields. In the field of wood processing, such as furniture manufacturing, decoration, packaging and industrial production, it is often used to cut wood. In metal processing, it can be used to saw metal plates, pipes, profiles, etc. In addition, it can also be seen in forest felling, timber making, pruning, timber yard timber making, railway sleeper sawing and other operations.

[0003] In the current field of saw tool technology, there are significant deficiencies in the replacement operation of the cutter head. In actual application scenarios, it is often necessary to replace the corresponding cutter head in time to achieve the best cutting effect according to different work tasks, such as cutting different materials such as wood, metal or plastic. However, in the prior art, the fixing method of the cutter head mostly relies on screw fixing or snap adjustment. Take screw fixing as an example, just like we use screws to install furniture in our daily life, we need to use tools such as screwdrivers to tighten or loosen the screws one by one. This process not only requires additional preparation of tools, but also when the number of screws is large, the operation is extremely cumbersome and time-consuming.

[0004] Chinese patent CN207239310U discloses a multifunctional saw quick-change structure and quick-change method, which includes a head shell, an output shaft and a quick-change device. The quick-change device is to rotate the quick-change lever, and then drive the eccentric block, the movable rod, the small cylindrical compression spring and the movable bracket in turn, so that the second cylindrical pin at the bottom of the movable bracket moves downward in the guide groove of the locking foot, prompting the locking foot to rotate around the third cylindrical pin and close. After the saw blade is installed, the locking foot will open and lock the saw blade by applying force upward, so that the saw blade can be quickly replaced. The multifunctional saw quick-change structure involved in the utility model can achieve the purpose of disassembling and replacing the saw blade only by toggling the quick-change lever on the upper side of the head shell, without the need to use other auxiliary tools, and is simple to operate and fast.

[0005] Chinese patent CN105728846A discloses a quick-change multifunctional saw structure, wherein the quick-change device comprises a quick-change lever, an eccentric block, a movable rod, a spring chuck, a tightening rod, and a compression spring. The quick-change lever and the eccentric block are connected to the top of the head shell through a cylindrical pin, the movable rod is arranged in the output shaft, the top is closely connected to the eccentric block, the bottom is threadedly connected to the tightening rod, a spring chuck is sleeved on the outside of the tightening rod, and a compression spring is sleeved on the outside of the spring chuck. The tool holder is arranged at the bottom of the output shaft, the inner wall of the tool holder is provided with a slope from top to bottom inward, and the outer surface of the corresponding spring chuck is provided with a protrusion. The quick-change multifunctional saw structure involved in the invention can realize the change of the diameter of the spring chuck by simply turning the quick-change lever, thereby achieving the purpose of disassembling and replacing the saw blade.

[0006] Although the above-mentioned prior art discloses that the purpose of disassembling and replacing the saw blade can be achieved by simply turning the quick-change trigger, it has no shock-absorbing function and is likely to cause damage to the battery pack and the user when the saw blade is working. In addition, the quick-change structure mentioned in the prior art is not convenient for mutual replacement. If the user needs to replace saw blades of various shapes, he needs to purchase multiple products, which is costly. Summary of the invention

[0007] 1. Technical issues to be resolved

[0008] In view of the deficiencies in the prior art, the present invention provides a shock-absorbing multi-purpose saw with a quick-change function, which solves the problem in the current technical field of saw tools that additional tools are needed to replace the cutter head and the operation of multiple screws is cumbersome.

[0009] (II) Technical solution

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] A shock-absorbing multi-purpose saw with a quick-change function comprises: a body, used for carrying and installing various parts of the multi-purpose saw; a cutter head, used for cutting various materials; a handle, which is arranged on the inner wall of the body and is used for connecting and fixing the parts inside the body; a shock-absorbing connecting rod, which is arranged on the handle and is used to connect the handle and the inner wall of the body; a motor, which is arranged on the inner wall of the body and is used for driving; a driving mechanism, which is arranged on the inner wall of the body and is used to convert a rotation operation into a driving telescopic force; an adapter mechanism, which is arranged on the inner wall of the body and converts the force output by the driving mechanism into a force for pressing and releasing the cutter head.

[0012] Preferably, the driving mechanism includes a connecting hollow cylinder, the inner wall of the body is fixedly connected to the connecting hollow cylinder, the outer wall of the connecting hollow cylinder is rotatably connected to a rotating buckle, the outer wall of the rotating buckle is fixedly connected to a rotating shaft, and the inner wall of the rotating shaft is rotatably connected to a cylindrical pin.

[0013] Preferably, a cylindrical compression spring is provided on the inner wall of the connecting hollow cylinder, one end of the cylindrical compression spring is fixedly connected to the inner wall of the connecting hollow cylinder, the other end of the cylindrical compression spring is fixedly connected to a spring limit seat, and the top of the spring limit seat is fixedly connected to an end face cam.

[0014] Preferably, an arc-shaped slide groove is provided on the inner wall of the end face cam, the arc-shaped slide groove is symmetrically arranged, and the cylindrical pin is located in the arc-shaped slide groove of the end face cam.

[0015] Preferably, a spiral spring is provided on the rotating pull button, one end of the spiral spring is fixedly connected to the rotating pull button, and the other end of the spiral spring is fixedly connected to the inner wall of the hollow cylinder.

[0016] Preferably, the adapter mechanism includes a Q-type adapter mechanism, a Y-type adapter mechanism, an E-type adapter mechanism, or a K-type adapter mechanism, the Q-type adapter mechanism is provided with an output cylinder 1, the output cylinder 1 is arranged on the inner wall of the machine body, a spring chuck is provided on the inner wall of the output cylinder 1, the spring chuck is slidably connected to the inner wall of the tool holder output shaft, and the outer wall of the tool holder output shaft is fixedly connected with a tensioning rod.

[0017] Preferably, the inner wall of the machine body is fixedly connected to the output cylinder 1, and the inner wall of the output cylinder 1 is slidably connected to the output shaft of the tool holder.

[0018] Preferably, a convex arc block is provided at the bottom of the tension rod, and the outer wall of the tension rod is slidably connected to the inner wall of the spring clamp.

[0019] Preferably, the inner wall of the spring chuck is hollow, and the outer wall of the spring chuck is provided with a groove.

[0020] Preferably, the Y-type adapter mechanism includes an output cylinder 2, the inner wall of the body is fixedly connected with the output cylinder 2, the inner wall of the output cylinder 2 is provided with a hollow output rod, the hollow output rod is fixedly connected to the bottom of the tool holder output shaft, the inner wall of the hollow output rod is provided with a steel ball, the inner wall of the hollow output rod is slidably connected with a Y-type pressing block, the top of the Y-type pressing block is a raised disc block, the bottom of the Y-type pressing block is a disc block, and the inner wall of the output cylinder 2 is provided with a large cavity; the E-type adapter mechanism includes an output cylinder 3, the body An output cylinder three is fixedly connected to the inner wall, a solid output rod is fixedly connected to the bottom of the tool holder output shaft, an E-type pressing block is threadedly connected to the bottom of the solid output rod, the K-type adapter mechanism includes an output cylinder four, an output cylinder four is fixedly connected to the inner wall of the body, an output sleeve rod is fixedly connected to the bottom of the tool holder output shaft, a locking foot is provided at the bottom of the output sleeve rod, an output sleeve block is fixedly connected to the inner wall of the output cylinder four, an arc groove is provided on the top of the locking foot, the locking foot is rotatably connected to the inner wall of the output sleeve block, and two locking feet are provided.

[0021] (III) Beneficial effects

[0022] Compared with the prior art, the present invention provides a shock-absorbing multi-purpose saw with a quick-change function, which has the following beneficial effects:

[0023] 1. The shock-absorbing multi-purpose saw with quick-change function adopts the linkage design of the driving mechanism and the adapter mechanism, such as rotating the pull button to drive the tension rod and steel ball locking, etc. The installation and removal of the cutter head can be completed by rotating or pressing, without the need for additional tools, which significantly improves the operating efficiency.

[0024] 2. This shock-absorbing multi-purpose saw with quick-change function provides a variety of adaptation mechanisms, including Q-type, Y-type, E-type, and K-type. Through differentiated structures such as spring chuck, steel ball, locking foot, etc., it can adapt to different types of cutter heads, such as cutting metal, wood, pipes, etc., to achieve "one machine for multiple uses".

[0025] 3. This quick-change multi-purpose saw uses dynamic fixing methods such as the tension rod squeezing the spring chuck to open, the steel ball and the large cavity to lock, and the arc groove of the locking foot to open and close, to ensure that the cutter head will not deviate or loosen under high-speed operation or load.

[0026] 4. The shock-absorbing multi-purpose saw with quick-change function realizes "one-button" operation through the rotation of the driving mechanism's trigger and the scroll spring linkage, which can lock / release by rotating, reducing the risk of misoperation and avoiding the loss or damage of parts caused by disassembly with traditional tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the overall structure of a vibration-absorbing multi-purpose saw with a quick-change function proposed by the present invention;

[0028] Figure 2 A schematic structural diagram of a shock-absorbing multi-purpose saw handle with a quick-change function proposed by the present invention;

[0029] Figure 3 A schematic structural diagram of a vibration-absorbing multi-purpose saw driving mechanism with a quick-change function proposed by the present invention;

[0030] Figure 4 A schematic structural diagram of a vibration-absorbing multi-purpose saw scroll spring with a quick-change function proposed by the present invention;

[0031] Figure 5 A schematic diagram of the structure of a vibration-absorbing multi-purpose saw end face cam with a quick-change function proposed by the present invention;

[0032] Figure 6 A schematic cross-sectional structure diagram of an output cylinder 1 of a vibration-absorbing multi-purpose saw with a quick-change function proposed by the present invention;

[0033] Figure 7 A schematic structural diagram of a vibration-absorbing multi-purpose saw blade head with a quick-change function proposed by the present invention;

[0034] Figure 8 A schematic structural diagram of a tension rod for a shock-absorbing multi-purpose saw with a quick-change function proposed by the present invention;

[0035] Fig. 9 A schematic cross-sectional structure diagram of an output cylinder 2 of a vibration-absorbing multi-purpose saw with a quick-change function proposed by the present invention;

[0036] Fig.10 A schematic cross-sectional structure diagram of a hollow output rod of a vibration-absorbing multi-purpose saw with a quick-change function proposed by the present invention;

[0037] Fig.11 A schematic cross-sectional structure diagram of an output cylinder 3 of a vibration-absorbing multi-purpose saw with a quick-change function proposed by the present invention;

[0038] Fig.12 A schematic cross-sectional structure diagram of an output cylinder 4 of a vibration-absorbing multi-purpose saw with a quick-change function proposed by the present invention;

[0039] Fig.13 This is a structural schematic diagram of a shock-absorbing multi-purpose saw locking foot with a quick-change function proposed by the present invention.

[0040] In the figure: 1, machine body; 2, cutter head; 3, handle; 4, damping connecting rod; 5, motor; 6, driving mechanism; 61, connecting hollow cylinder; 62, rotating buckle; 63, rotating shaft; 64, cylindrical compression spring; 65, spring limit seat; 66, end cam; 67, tool holder output shaft; 68, cylindrical pin; 69, scroll spring; 7, Q-type adapter mechanism; 71, output cylinder 1; 72, spring clip Head; 73, tension rod; 8, Y-type adapter mechanism; 81, output tube two; 82, hollow output rod; 83, steel ball; 84, Y-type pressing block; 85, large cavity; 9, E-type adapter mechanism; 91, output tube three; 92, solid output rod; 93, E-type pressing block; 10, K-type adapter mechanism; 101, output tube four; 102, output sleeve rod; 103, output sleeve block; 104, locking foot. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example 1

[0043] See also Figure 1-8, a shock-absorbing multi-purpose saw with a quick-change function, comprising: a body 1, which is used to carry and install various parts of the multi-purpose saw, provide stable structural support for the entire device, and is the core carrier of power transmission and operation control; a cutter head 2, which is used to cut various materials and is the direct execution component for realizing the function of the multi-purpose saw; it can be replaced with different types according to different cutting needs; a handle 3, which is arranged on the inner wall of the body 1 and is used to connect and fix the parts inside the body 1; a shock-absorbing connecting rod 4, which is provided on the handle 3, and the shock-absorbing connecting rod 4 is used to connect the handle 3 and the inner wall of the body 1, which plays a shock-absorbing role. When the multi-purpose saw is working, the sawing action will generate vibration and be transmitted to the handle 3, and the shock-absorbing connecting rod 4 can effectively buffer these vibrations, reduce the vibration amplitude transmitted to the user's hand, reduce the impact force borne by the hand during long-term operation, make the user hold it more easily and comfortably, and reduce fatigue. The handle 3, the shock-absorbing connecting rod 4 and the body 1 are connected in a The body is formed to form a shock-absorbing component, and the two ends of the shock-absorbing component are respectively connected to the head shell and the battery pack. The shock-absorbing connecting rod 4 can effectively buffer the vibration generated by the equipment during operation and reduce the transmission of the vibration to the handle 3, thereby reducing the discomfort of the user's hand. After reducing the vibration amplitude, the user can control the equipment more accurately and improve the use effect. The shock-absorbing component can buffer the impact of external vibration or impact on the body 1 and other precision components, and extend the service life of the equipment; the motor 5 is provided on the inner wall of the body 1. The motor 5 is used for driving and providing a power source for the entire multi-purpose saw; the driving mechanism 6 is arranged on the inner wall of the body 1, and the driving mechanism 6 is used to convert the rotation operation into the driving telescopic force; the adapter mechanism, the adapter mechanism is arranged on the inner wall of the body 1, and the adapter mechanism converts the force output by the driving mechanism 6 into the force for pressing and releasing the cutter head 2, and the adapter mechanism includes a Q-type adapter mechanism 7 or a Y-type adapter mechanism 8 or an E-type adapter mechanism 9 or a K-type adapter mechanism 10.

[0044] The driving mechanism 6 includes a connecting hollow cylinder 61, the inner wall of the body 1 is fixedly connected with the connecting hollow cylinder 61, the outer wall of the connecting hollow cylinder 61 is rotatably connected with a rotating pull button 62, the outer wall of the rotating pull button 62 is fixedly connected with a rotating shaft 63, the inner wall of the rotating shaft 63 is rotatably connected with a cylindrical pin 68, and a cylindrical compression spring 64 is arranged on the inner wall of the connecting hollow cylinder 61, one end of the cylindrical compression spring 64 is fixedly connected to the inner wall of the connecting hollow cylinder 61, and the other end of the cylindrical compression spring 64 is fixedly connected to a spring limit seat 65, and the spring limit seat The top of 65 is fixedly connected with an end cam 66, and an arc-shaped slide groove is arranged on the inner wall of the end cam 66. The arc-shaped slide groove is arranged symmetrically, and the cylindrical pin 68 is located in the arc-shaped slide groove of the end cam 66. When the cylindrical pin 68 is rotated, the cylindrical pin 68 presses the end cam 66 along the arc-shaped slide groove, and a spiral spring 69 is arranged on the rotating pull button 62. One end of the spiral spring 69 is fixedly connected to the rotating pull button 62, and the other end of the spiral spring 69 is fixedly connected to the inner wall of the connecting hollow cylinder 61, so that the rotating pull button 62 is maintained as the spiral spring 69. Figure 1 In the position shown, when the rotating pull button 62 is rotated, the rotating pull button 62 will drive the spiral spring 69 to store force.

[0045] The Q-type adapter mechanism 7 is provided with an output cylinder 71, which is arranged on the inner wall of the body 1, and a spring clamp 72 is provided on the inner wall of the output cylinder 71. The spring clamp 72 is slidably connected to the inner wall of the tool holder output shaft 67, and the outer wall of the tool holder output shaft 67 is fixedly connected with a tensioning rod 73. The inner wall of the body 1 is fixedly connected to the output cylinder 71, and the inner wall of the output cylinder 71 is slidably connected to the tool holder output shaft 67, so that the tool holder output shaft 67 can slide up and down stably. A convex arc block is provided at the bottom of the tensioning rod 73, and the outer wall of the tensioning rod 73 is slidably connected to the inner wall of the spring clamp 72. The inner wall of the spring clamp 72 is hollow, and the outer wall of the spring clamp 72 is provided with a groove, so that the hollow cylinder of the spring clamp 72 is divided into four parts. When the tensioning rod 73 moves upward, the four parts of the spring clamp 72 are opened to press and fix the tool head 2.

[0046] In summary, when the shock-absorbing multi-purpose saw with quick-change function is used, the rotating buckle 62 is rotated, and the rotating buckle 62 drives the volute spring 69 to store force, and the rotating buckle 62 drives the rotating shaft 63 to rotate, and the rotating shaft 63 drives the cylindrical pin 68 to rotate, and the cylindrical pin 68 rotates and moves to the top of the arc-shaped slide groove of the end face cam 66, so that the end face cam 66 is squeezed downward, and the end face cam 66 drives the spring limit seat 65 to squeeze the cylindrical compression spring 64 downward, so that the spring limit seat 65 drives the tool holder output shaft 67 to move downward, and vice versa when the rotating buckle 62 returns to its original position, the cylindrical compression spring 64 drives the spring limit seat 6 5 and the tool holder output shaft 67 move upward, so the tool holder output shaft 67 can be moved downward by rotating the rotating buckle 62. When the rotating buckle 62 returns to its original position, the tool holder output shaft 67 moves upward. When the tool holder output shaft 67 moves downward, the tool holder output shaft 67 drives the tensioning rod 73 to move downward. When the tool holder output shaft 67 moves upward, the tool holder output shaft 67 drives the tensioning rod 73 to move upward, so that the tensioning rod 73 squeezes the spring clamp 72 to open, and the spring clamp 72 moves upward with the tensioning rod 73, so that the spring clamp 72 presses and fixes the tool head 2, which plays a role in convenient and quick installation and disassembly.

[0047] Example 2

[0048] In actual use, the above-mentioned Q-type adapter mechanism 7 cannot adapt to all the cutter heads 2, so we can also use the following Y-type adapter mechanism 8.

[0049] See also Figure 9-10 An output cylinder 81 is fixedly connected to the inner wall of the body 1, and a hollow output rod 82 is arranged on the inner wall of the output cylinder 81. The hollow output rod 82 is fixedly connected to the bottom of the tool holder output shaft 67, and a steel ball 83 is arranged on the inner wall of the hollow output rod 82. A Y-shaped pressing block 84 is slidably connected to the inner wall of the hollow output rod 82. The top of the Y-shaped pressing block 84 is a raised disc block, and the bottom of the Y-shaped pressing block 84 is a disc block. A large cavity 85 is arranged on the inner wall of the output cylinder 81.

[0050] When the tool holder output shaft 67 moves downward, the steel ball 83 enters the large cavity 85, and the top raised disc block of the Y-shaped pressing block 84 is no longer locked by the steel ball 83 and can be freely pulled out or inserted. After inserting the Y-shaped pressing block 84, the return and rotation buckle 62 causes the tool holder output shaft 67 to move upward, and the tool holder output shaft 67 drives the steel ball 83 to lock the Y-shaped pressing block 84 upward, thereby achieving the effect of quick disassembly and fixation. At the same time, this connection method is more stable than embodiment 1 and is suitable for more tool heads 2.

[0051] Example 3

[0052] Furthermore, the above-mentioned adapter mechanism can also use the following E-type adapter mechanism 9.

[0053] See also Fig.11 An output cylinder 91 is fixedly connected to the inner wall of the machine body 1, a solid output rod 92 is fixedly connected to the bottom of the tool holder output shaft 67, and an E-type pressing block 93 is threadedly connected to the bottom of the solid output rod 92.

[0054] When the tool holder output shaft 67 moves downward, the tool holder output shaft 67 drives the solid output rod 92 and the E-type pressing block 93 to move downward, rotates the E-type pressing block 93, and then installs the cutter head 2 and then threadedly connects the E-type pressing block 93 back. The tool holder output shaft 67 moves upward to drive the E-type pressing block 93 to fix the cutter head 2.

[0055] Example 4

[0056] Furthermore, the above-mentioned adapter mechanism can also use the following K-type adapter mechanism 10.

[0057] See also Figure 12-13 An output cylinder 101 is fixedly connected to the inner wall of the machine body 1, an output sleeve rod 102 is fixedly connected to the bottom of the tool holder output shaft 67, a locking foot 104 is provided at the bottom of the output sleeve rod 102, an output sleeve block 103 is fixedly connected to the inner wall of the output cylinder 101, an arc groove is provided at the top of the locking foot 104, the locking foot 104 is rotatably connected to the inner wall of the output sleeve block 103, and two locking feet 104 are provided.

[0058] When the tool holder output shaft 67 moves downward, the tool holder output shaft 67 drives the output sleeve rod 102 to move downward, and the axis at the bottom of the output sleeve rod 102 presses downward against the arc groove of the locking foot 104, so that the locking feet 104 close together, and the cutter head 2 is taken out. When the tool holder output shaft 67 moves upward, the axis at the bottom of the output sleeve rod 102 presses upward against the arc groove of the locking foot 104, so that the locking feet 104 open together, and the opened locking feet 104 presses and fixes the cutter head 2.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A vibration-absorbing multi-purpose saw with a quick-change function, characterized in that: include: A body (1) for carrying and installing various parts of the multi-purpose saw; A cutter head (2) is used for cutting various materials; A handle (3), the handle (3) being arranged on the inner wall of the body (1) and used for connecting and fixing components inside the body (1); A shock-absorbing connecting rod (4), wherein the handle (3) is provided with a shock-absorbing connecting rod (4), and the shock-absorbing connecting rod (4) is used to connect the handle (3) and the inner wall of the body (1); A motor (5), wherein the inner wall of the machine body (1) is provided with a motor (5), and the motor (5) is used for driving; A driving mechanism (6), the driving mechanism (6) being arranged on the inner wall of the machine body (1), and the driving mechanism (6) being used for converting a rotation operation into a driving telescopic force; An adapting mechanism is arranged on the inner wall of the machine body (1), and the adapting mechanism converts the force output by the driving mechanism (6) into a force for pressing and releasing the cutter head (2).

2. The multi-purpose saw with a quick-change function according to claim 1, characterized in that: The driving mechanism (6) comprises a connecting hollow cylinder (61), the connecting hollow cylinder (61) is fixedly connected to the inner wall of the machine body (1), the outer wall of the connecting hollow cylinder (61) is rotatably connected to a rotating buckle (62), the outer wall of the rotating buckle (62) is fixedly connected to a rotating shaft (63), and the inner wall of the rotating shaft (63) is rotatably connected to a cylindrical pin (68).

3. The multi-purpose saw with a quick-change function according to claim 2, characterized in that: A cylindrical compression spring (64) is arranged on the inner wall of the connecting hollow cylinder (61), one end of the cylindrical compression spring (64) is fixedly connected to the inner wall of the connecting hollow cylinder (61), the other end of the cylindrical compression spring (64) is fixedly connected to a spring limiting seat (65), and the top of the spring limiting seat (65) is fixedly connected to an end face cam (66).

4. The multi-purpose saw with a quick-change function according to claim 3, characterized in that: An arc-shaped slide groove is arranged on the inner wall of the end face cam (66), and the arc-shaped slide groove is arranged symmetrically. The cylindrical pin (68) is located in the arc-shaped slide groove of the end face cam (66).

5. The multi-purpose saw with quick-change function according to claim 4, characterized in that: The rotating buckle (62) is provided with a spiral spring (69), one end of the spiral spring (69) is fixedly connected to the rotating buckle (62), and the other end of the spiral spring (69) is fixedly connected to the inner wall of the hollow cylinder (61).

6. The multi-purpose saw with a quick-change function according to claim 5, characterized in that: The adapting mechanism comprises a Q-type adapting mechanism (7) or a Y-type adapting mechanism (8) or an E-type adapting mechanism (9) or a K-type adapting mechanism (10); the Q-type adapting mechanism (7) is provided with an output tube (71); the output tube (71) is arranged on the inner wall of the machine body (1); a spring chuck (72) is arranged on the inner wall of the output tube (71); the spring chuck (72) is slidably connected to the inner wall of the tool holder output shaft (67); and a tension rod (73) is fixedly connected to the outer wall of the tool holder output shaft (67).

7. The multi-purpose saw with a quick-change function according to claim 6, characterized in that: The inner wall of the machine body (1) is fixedly connected to the output cylinder 1 (71), and the inner wall of the output cylinder 1 (71) is slidably connected to the tool holder output shaft (67).

8. The multi-purpose saw with a quick-change function according to claim 6, characterized in that: A convex arc block is provided at the bottom of the tension rod (73), and the outer wall of the tension rod (73) is slidably connected to the inner wall of the spring clamp (72).

9. The multi-purpose saw with a quick-change function according to claim 6, characterized in that: The inner wall of the spring clamp (72) is hollow, and the outer wall of the spring clamp (72) is provided with a groove.

10. The multi-purpose saw with quick-change function according to claim 6, characterized in that: The Y-type adapting mechanism (8) comprises an output cylinder (81) 2, the output cylinder (81) is fixedly connected to the inner wall of the body (1), a hollow output rod (82) is arranged on the inner wall of the output cylinder (81), the hollow output rod (82) is fixedly connected to the bottom of the tool holder output shaft (67), a steel ball (83) is arranged on the inner wall of the hollow output rod (82), a Y-type pressing block (84) is slidably connected to the inner wall of the hollow output rod (82), the top of the Y-type pressing block (84) is a raised disc block, the bottom of the Y-type pressing block (84) is a disc block, and a large cavity (85) is arranged on the inner wall of the output cylinder (81); the E-type adapting mechanism (9) comprises an output cylinder (91), the inner wall of the body (1) is fixedly connected to the output cylinder (81), and a large cavity (85) is arranged on the inner wall of the output cylinder (81). The output tube three (91) is fixedly connected to the bottom of the tool holder output shaft (67) with a solid output rod (92), and the bottom of the solid output rod (92) is threadedly connected to an E-type pressing block (93). The K-type adapter mechanism (10) includes an output tube four (101), and the inner wall of the body (1) is fixedly connected to the output tube four (101), and the bottom of the tool holder output shaft (67) is fixedly connected to an output sleeve rod (102), and the bottom of the output sleeve rod (102) is provided with a locking foot (104), and the inner wall of the output tube four (101) is fixedly connected to an output sleeve block (103), and the top of the locking foot (104) is provided with an arc groove, and the locking foot (104) is rotatably connected to the inner wall of the output sleeve block (103), and two locking feet (104) are provided.

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