Three-side blade opening machine with multi-angle adjustment blade opening structure

Abstract

The utility model relates to saw blade processing technical field, the utility model provides a kind of three-face opening blade machine with multi-angle adjusting opening blade structure's saw blade opening blade, including main body structure, the main body structure includes support base, first support plate, second support plate, T type slide rail, first motor, saw blade, connecting plate, second motor, tooth top opening blade grinding wheel and limit rod.The utility model provides a kind of three-face opening blade machine with multi-angle adjusting opening blade structure's saw blade opening blade, can drive a group of gear to rotate by starting fourth motor, and a group of gear will drive another group of gear to rotate in opposite direction simultaneously, so that can drive two groups of turntable, support frame, third motor and tooth surface opening blade grinding wheel synchronous opposite direction rotation, the angle between two groups of tooth surface opening blade grinding wheel can be changed at this time, solve the technical problem that opening blade structure angle is inconvenient to adjust in prior art.

Description

Technical Field

[0001] This utility model relates to the field of saw blade processing technology, specifically to a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure. Background Technology

[0002] The saw blade three-sided sharpening machine is a core processing equipment in the saw blade production and processing stage. It mainly focuses on precision machining of the three key cutting edges of the saw blade, specifically the two symmetrical tooth surfaces (front and back cutting surfaces) of the saw blade teeth and the tooth tip plane. Through grinding, polishing and other processes, it forms sharp and precisely angled cutting edges on the saw blade surface, which is suitable for the saw blade needs of multiple industries such as wood processing, metal cutting, and stone cutting. After processing, it can significantly improve the cutting efficiency of the saw blade, reduce the problem of rough cut edges, and extend the service life of the saw blade. It is a key process equipment to ensure that the saw blade cutting performance meets the standards.

[0003] Existing saw blades often have fixed or manually adjustable blade-sharpening mechanisms, requiring repeated disassembly and calibration, which is time-consuming and labor-intensive. Furthermore, the angle error can easily exceed 0.5°, leading to chipped teeth and uneven cuts during saw blade cutting, and affecting the lifespan of the saw blade. Therefore, this invention provides a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure to solve the above problems. Utility Model Content

[0004] To overcome the above-mentioned defects, the present invention provides a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure, which solves the technical problem that the angle of the sharpening structure is not easy to adjust in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure, comprising: a main structure, the main structure including a support base, a first support plate, a second support plate, a T-shaped slide rail, a first motor, a saw blade, a connecting plate, a second motor, a tooth-top sharpening grinding wheel and a limiting rod, wherein the limiting rod is provided in two sets; The tooth surface sharpening structure includes a fixed base, a sliding base, a second cylinder, a gear, a turntable, a tooth surface sharpening grinding wheel, a sliding groove, a scale line, and a pointer. The gear, the turntable, and the tooth surface sharpening grinding wheel are each provided in two sets. The second cylinder is installed on the surface of one side of the support base.

[0006] For example, in at least one embodiment of the present invention, a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is provided, which further includes: a first support plate fixedly connected to one end of a support base, a second support plate fixedly connected to the surface of one side of the support base, a support platform fixedly connected to the upper surface of the support base, and a T-shaped slide rail fixedly connected to the upper surface of the support platform.

[0007] For example, in at least one embodiment of the present invention, a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is provided, which further includes: the slide block is slidably sleeved on the outer surface of the T-shaped slide rail, and the inner surface of the slide block is slidably attached to the outer surface of the T-shaped slide rail.

[0008] For example, in at least one embodiment of the present invention, a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is provided, which further includes: the first motor is mounted on the surface of one side of the second support plate, the saw blade is mounted on the output shaft of the first motor, a first cylinder is mounted on the upper surface of the first motor near the end of the saw blade, and a connecting plate is fixedly connected to the upper end of the push rod inside the first cylinder.

[0009] For example, in at least one embodiment of the present invention, a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is provided, which further includes: a second motor installed on the upper surface of the connecting plate near one end of the saw blade, the tooth-top sharpening grinding wheel being fixedly connected to the output shaft of the second motor, and the position of the tooth-top sharpening grinding wheel corresponding to the position of the saw blade.

[0010] For example, in at least one embodiment of the present invention, a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is provided, which further includes: the lower ends of the two sets of limiting rods are fixedly connected to the upper surface of the first motor near the second support plate, and the end of the connecting plate near the second support plate is slidably sleeved on the outer surface of the two sets of limiting rods.

[0011] For example, in at least one embodiment of the present invention, a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is provided, which further includes: the slide is fixedly connected to the middle position of the lower surface of the fixed seat, and one end of the push rod inside the second cylinder is fixedly connected to the outer surface of the fixed seat near the first support plate.

[0012] For example, in at least one embodiment of this utility model, a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is provided, which further includes: shaft seats fixedly connected to both ends of the lower surface inside the fixed base; bearings connecting the lower ends of the two sets of gears to the interior of the two sets of shaft seats; bearings connecting the lower ends of the two sets of turntables to the interior of both ends of the upper surface of the fixed base; the lower ends of the two sets of turntables fixedly connected to the upper surfaces of the two sets of gears; and a fourth motor installed at one end of the lower surface of the fixed base, with the output shaft of the fourth motor fixedly connected to the lower end of one set of gears.

[0013] For example, in at least one embodiment of this utility model, a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is provided, which further includes: a support frame fixedly connected to the upper surface of each of the two sets of turntables, and a third motor installed at the upper end of each of the two sets of support frames; the two sets of toothed sharpening grinding wheels are fixedly connected to the output shafts of the two sets of third motors respectively; and the positions of the two sets of toothed sharpening grinding wheels correspond to the positions of the saw blade.

[0014] For example, in at least one embodiment of the present invention, a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is provided, which further includes: the slide groove is opened inside one end of the fixed base, the scale line is set on the outer surface of one end of the fixed base, the scale line is located at the upper end of the slide groove, one end of the pointer is fixedly connected to the outer surface of the lower end of a set of turntables, the other end of the pointer is slidably set inside the slide groove, and the position of the other end of the pointer corresponds to the position of the scale line.

[0015] The beneficial effects of this utility model are as follows: 1. This utility model can drive a set of gears to rotate by starting a fourth motor. While one set of gears is rotating, it will drive another set of gears to rotate in the opposite direction. This will drive two sets of turntables, support frame, third motor and tooth-sharpening grinding wheels to rotate synchronously in opposite directions. At this time, the angle between the two sets of tooth-sharpening grinding wheels can be changed. Compared with manual adjustment, this design can avoid human error by using a fourth motor to drive, realize automatic control, and effectively shorten the adjustment time.

[0016] 2. This utility model uses a groove to allow a set of turntables to rotate, which in turn can move a pointer along the inside of the groove. When the pointer moves inside the groove, the operator can observe the angle between the two sets of toothed grinding wheels in real time according to the positional relationship between the scale line and the pointer. This allows the operator to intuitively confirm the angle, avoid blind adjustment, and prevent errors. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure in one embodiment of the present invention; Figure 2 for Figure 1A schematic diagram of the main structure of a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is shown in the embodiment. Figure 3 for Figure 1 A schematic diagram of the tooth surface sharpening structure of a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure is shown in the embodiment. Figure 4 for Figure 1 An exploded view of the tooth surface sharpening structure of a three-sided sharpening machine for saw blade sharpening with a multi-angle adjustable sharpening structure in one embodiment. Figure 5 for Figure 1 The embodiment shows a schematic diagram of the pointer usage status of a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure.

[0019] In the diagram: 1. Main structure; 11. Support base; 12. First support plate; 13. Second support plate; 14. Support platform; 15. T-shaped slide rail; 16. First motor; 17. Saw blade; 18. First cylinder; 19. Connecting plate; 110. Second motor; 111. Tooth-tipped grinding wheel; 112. Limiting rod; 2. Tooth-surface sharpening structure; 21. Fixed seat; 22. Slide; 23. Second cylinder; 24. Shaft seat; 25. Gear; 26. Turntable; 27. Support frame; 28. Third motor; 29. ​​Tooth-surface sharpening grinding wheel; 210. Fourth motor; 211. Slide groove; 212. Scale line; 213. Pointer. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0021] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figures 1 to 5 As shown, this utility model provides a three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure, including: a main structure 1, the main structure 1 including a support base 11, a first support plate 12, a second support plate 13, a T-shaped slide rail 15, a first motor 16, a saw blade 17, a connecting plate 19, a second motor 110, a tooth-top sharpening grinding wheel 111 and a limiting rod 112, the limiting rod 112 being provided in two sets; The tooth surface sharpening structure 2 includes a fixed base 21, a slide 22, a second cylinder 23, a gear 25, a turntable 26, a tooth surface sharpening grinding wheel 29, a slide groove 211, a scale line 212 and a pointer 213. The gear 25, the turntable 26 and the tooth surface sharpening grinding wheel 29 are each provided in two sets. The second cylinder 23 is installed on the surface of one side of the support base 11.

[0027] The first support plate 12 is fixedly connected to one end of the support base 11, the second support plate 13 is fixedly connected to one side of the support base 11, the upper surface of the support base 11 is fixedly connected to the support platform 14, the T-shaped slide rail 15 is fixedly connected to the upper surface of the support platform 14, the slide seat 22 is slidably sleeved on the outer surface of the T-shaped slide rail 15, and the inner surface of the slide seat 22 is slidably attached to the outer surface of the T-shaped slide rail 15.

[0028] The movement range of the slide block 22 can be limited by the T-shaped slide rail 15, restricting the slide block 22 from moving up and down, so that the slide block 22 can only move along the length direction of the T-shaped slide rail 15. This can prevent the slide block 22 from shifting or falling off the outer surface of the T-shaped slide rail 15 due to vibration, thereby improving the overall stability of the toothed edge structure 2 during movement and use, and ensuring the overall operational safety of the device.

[0029] The first motor 16 is mounted on one side of the second support plate 13, the saw blade 17 is mounted on the output shaft of the first motor 16, the first cylinder 18 is mounted on the upper surface of the first motor 16 near the end of the saw blade 17, and the upper end of the push rod inside the first cylinder 18 is fixedly connected to the connecting plate 19. The second motor 110 is mounted on the upper surface of the connecting plate 19 near the end of the saw blade 17, and the tooth-tipped sharpening grinding wheel 111 is fixedly connected to the output shaft of the second motor 110. The position of the tooth-tipped sharpening grinding wheel 111 corresponds to the position of the saw blade 17.

[0030] By starting the first motor 16, the saw blade 17 can be rotated. Starting the first cylinder 18 can push the connecting plate 19, the second motor 110 and the tooth-tip sharpening grinding wheel 111 to move vertically in sync. At this time, the distance between the tooth-tip sharpening grinding wheel 111 and the saw blade 17 can be adjusted. The grinding depth of the tooth-tip sharpening grinding wheel 111 when sharpening the tooth tip of the saw blade 17 can be adjusted according to the actual situation.

[0031] The lower ends of the two sets of limiting rods 112 are fixedly connected to the upper surface of the first motor 16 near the second support plate 13, and the end of the connecting plate 19 near the second support plate 13 is slidably sleeved on the outer surface of the two sets of limiting rods 112.

[0032] The movement range of the connecting plate 19 can be limited by the two sets of limiting rods 112, which can prevent the connecting plate 19 from shaking. This ensures that the connecting plate 19, the second motor 110 and the tooth-top sharpening grinding wheel 111 can only move along the height direction of the two sets of first cylinders 18. This can prevent the connecting plate 19 from shifting or falling off the outer surface of the two sets of limiting rods 112 due to vibration, thereby improving the stability of the tooth-top sharpening grinding wheel 111 when sharpening the saw blade 17.

[0033] The slide block 22 is fixedly connected to the middle position of the lower surface of the fixed base 21, and one end of the push rod inside the second cylinder 23 is fixedly connected to the outer surface of the fixed base 21 near the first support plate 12.

[0034] By activating the second cylinder 23, the fixed seat 21 and the slide 22 can be pushed to move laterally along the length of the T-shaped slide rail 15, which will drive the two sets of tooth-sharpening grinding wheels 29 to approach the saw blade 17. Thus, the grinding depth of the two sets of tooth-sharpening grinding wheels 29 on the tooth surface of the saw blade 17 can be adjusted according to the actual situation.

[0035] The fixed base 21 has two fixed bearings 24 on both ends of its lower inner surface. The lower ends of the two sets of gears 25 are respectively connected to the interior of the two sets of bearings 24. The lower ends of the two sets of turntables 26 are connected to the interior of both ends of the upper surface of the fixed base 21. The lower ends of the two sets of turntables 26 are fixedly connected to the upper surfaces of the two sets of gears 25. A fourth motor 210 is installed at one end of the lower surface of the fixed base 21. The output shaft of the fourth motor 210 is fixedly connected to the lower end of a set of gears 25.

[0036] By activating the fourth motor 210, a set of gears 25 can be driven to rotate. This, in turn, drives two sets of gears 25 to rotate synchronously in opposite directions, directly rotating two sets of tooth-sharpening grinding wheels 29. This allows for the increase or decrease of the included angle between the two sets of tooth-sharpening grinding wheels 29. The fourth motor 210 is a power-off braking type servo motor with a rated power of 800W and a rated speed of 1500rpm, ensuring an angle adjustment accuracy of ≤0.05°. The measurement range of the scale line 212 is 0°-45°, with a minimum division value of 0.1°, and is compatible with… The saw blade commonly requires a specific cutting edge angle. By controlling the rotation speed and rotation angle, the rotation amplitude of the gear 25 can be precisely adjusted, thereby enabling relatively precise control over the change in the included angle between the two sets of tooth-sharpening grinding wheels 29. Furthermore, an electromagnetic brake is installed on the output shaft of the fourth motor 210. After the fourth motor 210 adjusts the included angle between the two sets of tooth-sharpening grinding wheels 29 to the correct position, it immediately locks the output shaft to prevent the included angle between the two sets of tooth-sharpening grinding wheels 29 from loosening. In addition, the installation of two sets of bearing seats 24 can effectively improve the stability of the two sets of gears 25 during rotation.

[0037] The upper surfaces of the two sets of turntables 26 are fixedly connected to support frames 27, and the upper ends of the two sets of support frames 27 are each equipped with a third motor 28. The two sets of toothed grinding wheels 29 are fixedly connected to the output shafts of the two sets of third motors 28 respectively, and the positions of the two sets of toothed grinding wheels 29 correspond to the positions of the saw blade 17.

[0038] By starting two sets of third motors 28, their output shafts drive two sets of tooth-sharpening grinding wheels 29 to rotate at high speed, simultaneously grinding and sharpening the tooth surfaces on both sides of the saw blade 17.

[0039] The slide groove 211 is formed inside one end of the fixed base 21, the scale line 212 is set on the outer surface of one end of the fixed base 21, the scale line 212 is located at the upper end of the slide groove 211, one end of the pointer 213 is fixedly connected to the outer surface of the lower end of a set of turntables 26, the other end of the pointer 213 is slidably set inside the slide groove 211, and the position of the other end of the pointer 213 corresponds to the position of the scale line 212.

[0040] The rotation of a set of turntables 26 can drive the pointer 213 to slide inside the groove 211. The positional relationship between the pointer 213 and the scale line 212 allows the operator to judge whether the angle is in place without relying on experience or additional measuring tools. This can effectively avoid errors caused by adjustment by feeling, directly ensure the accuracy of the saw blade cutting edge angle, and reduce problems such as tooth breakage and rough cut caused by angle deviation.

[0041] Working principle and usage process of this utility model: When using this invention, firstly, the fourth motor 210 is started to drive a set of gears 25 to rotate. These gears 25 drive another set of gears 25 to rotate in the opposite direction, thereby causing the two sets of turntables 26, support frame 27, third motor 28, and tooth-sharpening grinding wheels 29 to rotate synchronously in the opposite direction. The included angle between the two sets of tooth-sharpening grinding wheels 29 is confirmed by the pointer 213 and scale line 212 in the slide groove 211. Next, the first motor 16 is started to drive the saw blade 17 to rotate. Then, the second cylinder 23 is started to push the fixed seat 21 and slide 22 along the T-shaped slide rail 15. After adjusting the distance between the two sets of tooth-sharpening grinding wheels 29 and the saw blade 17, start the third motor 28 to sharpen the two sets of tooth-sharpening grinding wheels 29 on both sides of the saw blade 17. Then start the first cylinder 18 to push the connecting plate 19, the second motor 110 and the tooth-top sharpening grinding wheel 111 to move vertically along the limit rod 112. After adjusting the distance between the tooth-top sharpening grinding wheel 111 and the saw blade 17, start the second motor 110 to sharpen the tooth-top of the saw blade 17 with the tooth-top sharpening grinding wheel 111. At this time, the three sides of the saw blade 17 can be sharpened.

[0042] However, as is well known to those skilled in the art, the working principles and wiring methods of the first motor 16, the first cylinder 18, the second motor 110, the second cylinder 23, the third motor 28, and the fourth motor 210 are commonplace and belong to conventional methods or common knowledge. Therefore, they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience. Furthermore, all gear components and movable parts in this application need to be cleaned and maintained regularly (including but not limited to dust removal and lubrication) to ensure their normal operation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure, characterized in that, include: The main structure (1) includes a support base (11), a first support plate (12), a second support plate (13), a T-shaped slide rail (15), a first motor (16), a saw blade (17), a connecting plate (19), a second motor (110), a tooth-top sharpening grinding wheel (111), and a limiting rod (112), wherein two sets of the limiting rod (112) are provided; The tooth surface sharpening structure (2) includes a fixed base (21), a slide (22), a second cylinder (23), a gear (25), a turntable (26), a tooth surface sharpening grinding wheel (29), a slide groove (211), a scale line (212) and a pointer (213). The gear (25), the turntable (26) and the tooth surface sharpening grinding wheel (29) are all provided in two sets. The second cylinder (23) is installed on the surface of one side of the support base (11).

2. The three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure according to claim 1, characterized in that: The first support plate (12) is fixedly connected to one end of the support base (11), the second support plate (13) is fixedly connected to the surface of one side of the support base (11), the upper surface of the support base (11) is fixedly connected to the support platform (14), and the T-shaped slide rail (15) is fixedly connected to the upper surface of the support platform (14).

3. A three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure according to claim 1, characterized in that: The slide block (22) is slidably sleeved on the outer surface of the T-shaped slide rail (15), and the inner surface of the slide block (22) is slidably attached to the outer surface of the T-shaped slide rail (15).

4. A three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure according to claim 1, characterized in that: The first motor (16) is mounted on the surface of the second support plate (13) on one side. The saw blade (17) is mounted on the output shaft of the first motor (16). A first cylinder (18) is mounted on the upper surface of the first motor (16) near the end of the saw blade (17). A connecting plate (19) is fixedly connected to the upper end of the push rod inside the first cylinder (18).

5. A three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure according to claim 1, characterized in that: The second motor (110) is installed on the upper surface of the connecting plate (19) near the end of the saw blade (17). The tooth-tipped grinding wheel (111) is fixedly connected to the output shaft of the second motor (110). The position of the tooth-tipped grinding wheel (111) corresponds to the position of the saw blade (17).

6. A three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure according to claim 1, characterized in that: The lower ends of the two sets of limiting rods (112) are fixedly connected to the upper surface of the first motor (16) near the second support plate (13), and the end of the connecting plate (19) near the second support plate (13) is slidably sleeved on the outer surface of the two sets of limiting rods (112).

7. A three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure according to claim 1, characterized in that: The slide (22) is fixedly connected to the middle position of the lower surface of the fixed seat (21), and one end of the push rod inside the second cylinder (23) is fixedly connected to the outer surface of the fixed seat (21) near the first support plate (12).

8. A three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure according to claim 1, characterized in that: Both ends of the lower surface of the fixed base (21) are fixedly connected to the bearings (24). The lower ends of the two sets of gears (25) are respectively bearing connected to the interior of the two sets of bearings (24). The lower ends of the two sets of turntables (26) are bearing connected to the interior of both ends of the upper surface of the fixed base (21). The lower ends of the two sets of turntables (26) are fixedly connected to the upper surface of the two sets of gears (25). A fourth motor (210) is installed at one end of the lower surface of the fixed base (21). The output shaft of the fourth motor (210) is fixedly connected to the lower end of a set of gears (25).

9. A three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure according to claim 1, characterized in that: The upper surfaces of the two sets of turntables (26) are fixedly connected with support frames (27), and the upper ends of the two sets of support frames (27) are equipped with third motors (28). The two sets of toothed grinding wheels (29) are fixedly connected to the output shafts of the two sets of third motors (28), and the positions of the two sets of toothed grinding wheels (29) correspond to the positions of the saw blades (17).

10. A three-sided saw blade sharpening machine with a multi-angle adjustable sharpening structure according to claim 1, characterized in that: The groove (211) is opened inside one end of the fixed base (21), the scale line (212) is set on the outer surface of one end of the fixed base (21), the scale line (212) is located at the upper end of the groove (211), one end of the pointer (213) is fixedly connected to the outer surface of the lower end of a set of turntables (26), the other end of the pointer (213) is slidably set inside the groove (211), and the position of the other end of the pointer (213) corresponds to the position of the scale line (212).

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