Combined spiral woodworking wound knife

Abstract

The utility model discloses a combined spiral woodworking wound knife, and relates to the technical field of woodworking wound knives, the combined spiral woodworking wound knife comprises a knife body, the knife body is a regular triangle, each side surface of the knife body is provided with a knife groove, a spiral knife is arranged in the knife groove, and a knife shaft is arranged in the spiral knife; a conversion shaft is arranged in the cutter body; a top cover is arranged at the top end of the cutter body, a bottom cover is arranged at the bottom end of the cutter body, the top cover and the bottom cover are both of a hollow structure, the two ends of the cutter shaft and the two ends of the conversion shaft are distributed in the top cover and the bottom cover, the top cover and the bottom cover are the same in size and both larger than the sectional size of the cutter body, and side lines of the top cover and the bottom cover are parallel to side lines of the cutter body. According to the combined spiral woodworking wound knife provided by the utility model, a plurality of spiral knives are arranged on the knife body, materials can be processed by utilizing different spiral knives under the condition that the combined spiral woodworking wound knife is not disassembled, a deflection wheel is arranged on a conversion shaft, the spiral knives are fixed, and driven gears on knife shafts in the spiral knives are kept to be meshed with a gear ring disc; and the gear ring disc drives the spiral cutter to rotate for processing.

Description

Technical Field

[0001] The utility model relates to the technical field of woodworking knives, in particular to a combined spiral woodworking knives. Background Art

[0002] When carpenters are planing large areas of wood, they generally use woodworking planes, also called woodworking knives. The planers used for woodworking planers include straight planers and spiral planers. When using a straight-edged planer to cut wood, the blade enters the cutting state intermittently, the planing impact force is large, the cutting is not stable, the planing accuracy is not high, and sometimes secondary grinding is required; it is noisy when used, but it is simple to manufacture and low in cost. Compared with straight planers, spiral planers solve the defects of straight planers, but the cost is relatively high.

[0003] A single spiral cutter has only one planing accuracy. When planing wood, multi-stage cutters are used to plan it. This minimizes the wear on the high-precision cutter. However, when replacing the cutter, recalibration is required, which is cumbersome to operate and inefficient.

[0004] Therefore, a combined spiral woodworking cutting tool is provided, which can be used to change the tool without disassembling the tool, thereby simplifying the operation and increasing the efficiency. Utility Model Content

[0005] Therefore, the purpose of the present invention is to provide a combined spiral woodworking knife to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a combined spiral woodworking cutting knife, which includes a knife body, the knife body is an equilateral triangle, each side of the knife body is provided with a knife groove, the interior of the knife groove is provided with a spiral knife, and the interior of the spiral knife is provided with a knife shaft; a conversion shaft is provided inside the knife body; a top cover is provided at the top end of the knife body, and a bottom cover is provided at the bottom end of the knife body, both the top cover and the bottom cover are hollow structures, and the two ends of the knife shaft and the conversion shaft are distributed in the top cover and the bottom cover.

[0007] As a preferred solution of the combined spiral woodworking cutting knife described in the utility model, the top cover and the bottom cover have the same size and are both larger than the cross-sectional size of the knife body, and the side lines of the top cover and the bottom cover are parallel to the side lines of the knife body.

[0008] As a preferred solution of the combined spiral woodworking cutting knife described in the utility model, a limiting groove is arranged inside the top surface of the bottom cover, the center line of the limiting groove is on the mid-vertical line of the edge line of the bottom cover, the two ends of the limiting groove are semicircular, the inner diameter is the same as the diameter of the knife shaft, one side of the limiting groove is tangent to the inner edge line of the bottom cover, one side of the semicircle of the limiting groove coincides with the end face edge line of the knife body, and a through groove is arranged inside the limiting groove, and the through groove passes through the top surface of the bottom cover.

[0009] As a preferred solution of the combined spiral woodworking knife described in the utility model, a limiting groove is also arranged inside the bottom surface of the top cover, the structure of the limiting groove in the top cover is the same as that of the limiting groove in the bottom cover, and the distribution position corresponds to the position of the limiting groove in the bottom cover.

[0010] As a preferred solution of the combined spiral woodworking cutting knife described in the utility model, the knife shaft passes through the spiral knife, and the two ends of the knife shaft are respectively located inside the limiting grooves in the top cover and the bottom cover; limiting plates are arranged on the outer sides of the limiting grooves at both ends of the knife shaft, the limiting plates are fitted with the top surface of the limiting groove, and the diameter of the limiting plates is the same as the maximum circular diameter of the limiting groove.

[0011] As a preferred solution of the combined spiral woodworking cutting knife described in the utility model, a fixed seat is arranged on the outer side of the top surface of the bottom cover; the conversion shaft passes through the knife body, and first bearings are arranged on both ends of the conversion shaft on the two end surfaces of the knife body, and the bottom of the conversion shaft is connected to the fixed seat.

[0012] As a preferred solution of the combined spiral woodworking knife described in the utility model, a third bearing is arranged inside the top cover, the third bearing is tangent to the inner wall of the top cover, a gear ring disk is arranged inside the third bearing, a second bearing is arranged on the top surface of the top cover, an output shaft is arranged inside the second bearing, and the output shaft passes through the top cover and the gear ring disk.

[0013] As a preferred solution of the combined spiral woodworking cutting knife described in the utility model, a driven gear is arranged on the top of the knife shaft, the top surface of the driven gear is flush with the top surface of the ring gear in the ring gear disk, and multiple driven gears are not engaged with the ring gear disk at the same time.

[0014] As a preferred solution of the combined spiral woodworking cutting knife described in the utility model, wherein: a bearing disk is arranged at the top end of the conversion shaft, and the other end of the bearing disk is connected to the output shaft; a deflection wheel is arranged on the conversion shaft, the main body of the deflection wheel is an equilateral triangle, one side of the deflection wheel is an arc shape, and the straight edge of the deflection wheel is parallel to the cross-sectional edge line of the knife body; the deflection wheel is located between the driven gear and the limit groove; a fourth bearing is also arranged on the top of the knife shaft, and the position and thickness of the fourth bearing correspond to the deflection wheel.

[0015] As a preferred solution of the combined spiral woodworking cutting knife described in the utility model, wherein: multiple installation grooves are arranged at both ends of the knife body, and magnetic blocks are arranged inside the installation grooves, the magnetic blocks are flush with the end surfaces of the knife body, and each installation groove is located at the top corner of the knife body; the bottom surface of the top cover and the top surface of the bottom cover are both provided with installation grooves, and magnetic blocks are also arranged inside the installation grooves, and the magnetic blocks are also flush with the bottom surface of the top cover and the top surface of the bottom cover; the number and position of the installation grooves on the bottom surface of the top cover and the top surface of the bottom cover correspond to the number and position of the installation grooves at both ends of the bottom cover.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model provides a combined spiral woodworking knife. By arranging and installing a plurality of spiral knives on a knife body, different spiral knives can be used to process materials without disassembling the knife body.

[0018] 2. The utility model provides a combined spiral woodworking cutting tool. By arranging a first bearing on the conversion shaft, the tool body can rotate around the conversion shaft, so that the surfaces where different spiral cutters are located can be rotated to just above the processing material without the need for re-calibration, thereby reducing the difficulty of operation, saving operation time and improving work efficiency.

[0019] 3. The utility model provides a combined spiral woodworking cutting tool, which fixes the spiral cutter by arranging a deflection wheel on the conversion shaft, and keeps the driven gear on the cutter shaft of the spiral cutter meshing with the gear ring disk. The rotation of the gear ring disk drives the spiral cutter to rotate and process the material.

[0020] 4. The utility model provides a combined spiral woodworking knife, which increases the gear ratio between the ring gear disk and the driven gear by arranging a larger ring gear disk and a smaller driven gear, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0022] Figure 1 This is a schematic diagram of the overall structure of a combined spiral woodworking knife of the utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of a combined spiral woodworking knife body of the utility model;

[0024] Figure 3 This is a schematic diagram of the top partial structure of a combined spiral woodworking knife body of the utility model;

[0025] Figure 4 It is a schematic diagram of the top view of the combined spiral woodworking knife cover of the utility model;

[0026] Figure 5 This is a bottom view structural schematic diagram of a combined spiral woodworking knife top cover of the utility model;

[0027] Figure 6 This is a front view structural schematic diagram of a combined spiral woodworking knife bottom cover of the utility model;

[0028] Figure 7 The utility model is a rear view structural schematic diagram of a combined spiral woodworking knife bottom cover.

[0029] Description of reference numerals:

[0030] 1. Cutter body; 11. Cutter groove; 12. Spiral knife; 13. Cutter shaft; 14. Conversion shaft; 15. Driven gear; 16. First bearing; 2. Top cover; 21. Second bearing; 22. Output shaft; 23. Third bearing; 24. Ring plate; 3. Bottom cover; 31. Fixed seat; 4. Limiting groove; 41. Limiting plate; 42. Through groove; 5. Mounting groove; 51. Magnetic block; 6. Bearing plate; 7. Deflection wheel; 71. Fourth bearing. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] Reference Figure 1-7 , a combined spiral woodworking cutting knife provided by the utility model, this combined spiral woodworking cutting knife includes a knife body 1, the knife body 1 is an equilateral triangle, a knife groove 11 is arranged on each side of the knife body 1, a spiral knife 12 is arranged inside the knife groove 11, and a knife shaft 13 is arranged inside the spiral knife 12; a conversion shaft 14 is arranged inside the knife body 1; a top cover 2 is arranged at the top end of the knife body 1, and a bottom cover 3 is arranged at the bottom end of the knife body 1, both the top cover 2 and the bottom cover 3 are hollow structures, and the two ends of the knife shaft 13 and the conversion shaft 14 are distributed in the top cover 2 and the bottom cover 3.

[0033] Specifically, the blade body 1 is an equilateral triangle, and a blade groove 11 is provided on each side of the blade body 1. A spiral blade 12 is provided inside the blade groove 11, and the spiral blade 12 is fixed to the side wall of the blade body 1 through the blade groove 11; a blade shaft 13 is provided inside the spiral blade 12, and the spiral blade 12 is driven to rotate by the blade shaft 13, so that the spiral blade 12 processes the wood; a conversion shaft 14 is provided inside the blade body 1, and the blade body 1 can be rotated by the conversion shaft 14, so that the spiral blades 12 on different sides face downward to process the wood; a top cover 2 is provided at the top of the blade body 1, and a bottom cover 3 is provided at the bottom end of the blade body 1, both of which are hollow structures, and a system for controlling the operation of the bottom cover 3 is provided inside the top cover 2 and the bottom cover 3; the two ends of the blade shaft 13 and the conversion shaft 14 are distributed in the top cover 2 and the bottom cover 3, so that the blade body 1 and the spiral blade 12 can move between the top cover 2 and the bottom cover 3.

[0034] The top cover 2 and the bottom cover 3 have the same size and are both larger than the cross-sectional size of the blade body 1 , and the side lines of the top cover 2 and the bottom cover 3 are parallel to the side lines of the blade body 1 .

[0035] Specifically, the top cover 2 and the bottom cover 3 can completely cover both ends of the blade body 1 .

[0036] A limiting groove 4 is arranged inside the top surface of the bottom cover 3, and the center line of the limiting groove 4 is on the mid-perpendicular line of the edge line of the bottom cover 3. Both ends of the limiting groove 4 are semicircular, and the inner diameter is the same as the diameter of the knife shaft 13. One side of the limiting groove 4 is tangent to the inner edge line of the bottom cover 3, and one semicircle of the limiting groove 4 coincides with the end face edge line of the knife body 1. A through groove 42 is arranged inside the limiting groove 4, and the through groove 42 passes through the top surface of the bottom cover 3.

[0037] Specifically, a limiting groove 4 is provided inside the top surface of the bottom cover 3, and the center line of the limiting groove 4 is on the mid-perpendicular line of the edge line of the bottom cover 3. Both ends of the limiting groove 4 are semicircular, and the inner diameter is the same as the diameter of the knife shaft 13. The movement range of the knife shaft 13 is planned by the limiting groove 4; one side of the limiting groove 4 is tangent to the inner side line of the bottom cover 3, and the semicircle of one side of the limiting groove 4 coincides with the end face edge line of the knife body 1, so that the range of movement of the knife shaft 13 to the outside of the knife body 1 is increased; a through groove 42 is provided inside the limiting groove 4, and the through groove 42 passes through the top surface of the bottom cover 3, so that the position of the limiting groove 4 corresponds to the position of the knife shaft 13, and the knife shaft 13 can pass through the top surface of the bottom cover 3.

[0038] A limiting groove 4 is also provided inside the bottom surface of the top cover 2 . The structure of the limiting groove 4 in the top cover 2 is the same as that of the limiting groove 4 in the bottom cover 3 , and the distribution position corresponds to the position of the limiting groove 4 in the bottom cover 3 .

[0039] Specifically, the other end of the knife shaft 13 passes through the bottom surface of the top cover 2 .

[0040] The blade shaft 13 passes through the spiral blade 12, and the two ends of the blade shaft 13 are respectively located inside the limit grooves 4 in the top cover 2 and the bottom cover 3; the two ends of the blade shaft 13 are provided with limit plates 41 on the outside of the limit groove 4, and the limit plates 41 are fitted with the top surface of the limit groove 4, and the diameter of the limit plates 41 is the same as the maximum circular diameter of the limit groove 4.

[0041] Specifically, the blade shaft 13 passes through the spiral blade 12, and the two ends of the blade shaft 13 are respectively located inside the limit groove 4 in the top cover 2 and the bottom cover 3, so that the rotation of the blade shaft 13 can drive the spiral blade 12 to rotate; the limit plate 41 is in contact with the top surface of the limit groove 4, and the diameter of the limit plate 41 is the same as the maximum circular diameter of the limit groove 4. When the blade shaft 13 moves outward, the top of the limit groove 4 is sealed by the limit plate 41 to prevent external dust from entering.

[0042] A fixing seat 31 is arranged on the outer side of the top surface of the bottom cover 3 ; the conversion shaft 14 passes through the cutter body 1 , and first bearings 16 are arranged on both ends of the conversion shaft 14 on both end surfaces of the cutter body 1 , and the bottom of the conversion shaft 14 is connected to the fixing seat 31 .

[0043] Specifically, the conversion shaft 14 is fixed by the fixing seat 31 , and the cutter body 1 rotates around the conversion shaft 14 under the action of the first bearing 16 .

[0044] A third bearing 23 is arranged inside the top cover 2, and the third bearing 23 is tangent to the inner wall of the top cover 2. A gear ring plate 24 is arranged inside the third bearing 23. A second bearing 21 is arranged on the top surface of the top cover 2, and an output shaft 22 is arranged inside the second bearing 21. The output shaft 22 passes through the top cover 2 and the gear ring plate 24.

[0045] Specifically, a third bearing 23 is provided inside the top cover 2, the third bearing 23 is tangent to the inner wall of the top cover 2, a gear ring plate 24 is provided inside the third bearing 23, and the gear ring plate 24 can rotate independently through the third bearing 23; a second bearing 21 is provided on the top surface of the top cover 2, an output shaft 22 is provided inside the second bearing 21, the output shaft 22 passes through the top cover 2 and the gear ring plate 24, and drives the gear ring plate 24 to rotate independently from the top cover 2 through the second bearing 21.

[0046] A driven gear 15 is disposed on the top of the blade shaft 13 , and the top surface of the driven gear 15 is flush with the top surface of the ring gear in the ring gear disk 24 , and the plurality of driven gears 15 are not meshed with the ring gear disk 24 at the same time.

[0047] Specifically, a single driven gear 15 can mesh with the ring gear plate 24, and the rotation of the ring gear plate 24 drives the driven gear 15 to rotate. Since the gear ratios of the ring gear plate 24 and the driven gear 15 are quite different, the speed of the output shaft 22 of the driven gear 15 is not high when it moves at high speed, so it has higher controllability and lower energy consumption.

[0048] A bearing disk 6 is provided at the top end of the conversion shaft 14, and the other end of the bearing disk 6 is connected to the output shaft 22; a deflection wheel 7 is provided on the conversion shaft 14, the main body of the deflection wheel 7 is an equilateral triangle, one side of the deflection wheel 7 is an arc shape, and the straight edge of the deflection wheel 7 is parallel to the cross-sectional edge line of the cutter body 1; the deflection wheel 7 is located between the driven gear 15 and the limiting groove 4; a fourth bearing 71 is also provided on the top of the cutter shaft 13, and the position and thickness of the fourth bearing 71 correspond to the deflection wheel 7.

[0049] Specifically, a bearing disk 6 is provided at the top of the conversion shaft 14, and the other end of the bearing disk 6 is connected to the output shaft 22. A bearing disk 6 is fixed to one end of the conversion shaft 14, and the output shaft 22 can rotate independently with the conversion shaft 14 through the bearing disk 6; the main body of the deflection wheel 7 is an equilateral triangle, and one side of the deflection wheel 7 is an arc shape. The straight edge of the deflection wheel 7 is parallel to the cross-sectional edge line of the cutter body 1. By rotating the cutter body 1, the cutter body 1 rotates around the conversion shaft 14, and the deflection wheel 7 remains stationary. The arc surface of the deflection wheel 7 pushes the cutter shaft 13 to the other end of the limiting groove 4. When the spiral cutter 12 is working, the arc surface of the deflection wheel 7 fixes the cutter shaft 13 to prevent the cutter shaft 13 from moving upward; a fourth bearing 71 is also provided on the top of the cutter shaft 13. The position and thickness of the fourth bearing 71 correspond to the deflection wheel 7. Through the fourth bearing 71, the rotation of the bottom cover 3 will not affect the working posture of the deflection wheel 7.

[0050] Multiple mounting grooves 5 are provided at both ends of the blade body 1, and magnetic blocks 51 are provided inside the mounting grooves 5. The magnetic blocks 51 are flush with the end surface of the blade body 1, and each mounting groove 5 is located at the top corner of the blade body 1; mounting grooves 5 are provided on the bottom surface of the top cover 2 and the top surface of the bottom cover 3, and magnetic blocks 51 are also provided inside the mounting grooves 5. The magnetic blocks 51 are also flush with the bottom surface of the top cover 2 and the top surface of the bottom cover 3; the number and position of the mounting grooves 5 on the bottom surface of the top cover 2 and the top surface of the bottom cover 3 correspond to the number and position of the mounting grooves 5 at both ends of the bottom cover 3.

[0051] Specifically, the cutter body 1 is fixed to the top cover 2 and the bottom cover 3 by cooperating with the magnetic blocks 51 on the end surfaces of the cutter body 1 on both sides and the magnetic blocks 51 on the top cover 2 and the bottom cover 3, and the cutter body 1 can be fixed after each rotation of 60°, so that different sides of the cutter body 1 face the processing material, thereby enabling different spiral cutters 12 to process the material.

[0052] During use, one end of the output shaft 22 is connected to the external motor, one side of the cutter body 1 is parallel to the ground, and the spiral cutter 12 on the side of the cutter body 1 parallel to the ground is pushed out under the action of gravity, and the cutter shaft 13 in the spiral cutter 12 moves to the outer arc of the limit groove 4, and the cutter shaft 13 in the spiral cutter 12 is fixed by the arc surface of the deflection wheel 7, and the driven gear 15 on the cutter shaft 13 is meshed with the gear ring disk 24, and after the spiral cutter 12 is pushed out, the side of the spiral cutter 12 is always higher than the top cover 2 and the bottom cover 3 The edge of the motor drives the output shaft 22 to rotate, so that the ring gear disk 24 rotates, and then drives the spiral cutter 12 to rotate to process the material; when the cutter needs to be changed, the motor is turned off, and the cutter body 1 is manually rotated to make the other surfaces of the cutter body 1 parallel to the ground. After the other surfaces are turned over, the spiral cutter 12 moves down to the inside of the cutter body 1 under the action of gravity, and moves to the other side of the arc of the limiting groove 4 through the cutter shaft 13 on the spiral cutter 12 to fix the spiral cutter 12. The cutter body 1 is fixed to the top cover 2 and the bottom cover 3 by the magnetic block 51 to realize the tool change.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A combined spiral woodworking knife, characterized in that: The knife body (1) comprises a knife body (1), the knife body (1) is in the shape of an equilateral triangle, a knife groove (11) is arranged on each side of the knife body (1), a spiral knife (12) is arranged inside the knife groove (11), and a knife shaft (13) is arranged inside the spiral knife (12); a conversion shaft (14) is arranged inside the knife body (1); a top cover (2) is arranged at the top end of the knife body (1), and a bottom cover (3) is arranged at the bottom end of the knife body (1), the top cover (2) and the bottom cover (3) are both hollow structures, and the two ends of the knife shaft (13) and the conversion shaft (14) are distributed in the top cover (2) and the bottom cover (3).

2. The combined spiral woodworking knife according to claim 1, characterized in that: The top cover (2) and the bottom cover (3) have the same size and are both larger than the cross-sectional size of the knife body (1); the side lines of the top cover (2) and the bottom cover (3) are parallel to the side lines of the knife body (1).

3. The combined spiral woodworking knife according to claim 2, characterized in that: A limiting groove (4) is provided inside the top surface of the bottom cover (3), the center line of the limiting groove (4) is on the mid-perpendicular line of the edge line of the bottom cover (3), both ends of the limiting groove (4) are semicircular, the inner diameter is the same as the diameter of the knife shaft (13), one side of the limiting groove (4) is tangent to the inner side line of the bottom cover (3), one side of the semicircle of the limiting groove (4) coincides with the end face edge line of the knife body (1), and a through groove (42) is provided inside the limiting groove (4), and the through groove (42) passes through the top surface of the bottom cover (3).

4. The combined spiral woodworking knife according to claim 3, characterized in that: A limiting groove (4) is also provided inside the bottom surface of the top cover (2); the structure of the limiting groove (4) in the top cover (2) is the same as that of the limiting groove (4) in the bottom cover (3), and the distribution position corresponds to the position of the limiting groove (4) in the bottom cover (3).

5. The combined spiral woodworking knife according to claim 4, characterized in that: The knife shaft (13) passes through the spiral knife (12), and the two ends of the knife shaft (13) are respectively located inside the limiting grooves (4) in the top cover (2) and the bottom cover (3); limiting plates (41) are arranged on the outside of the limiting grooves (4) at the two ends of the knife shaft (13), the limiting plates (41) are in contact with the top surface of the limiting grooves (4), and the diameter of the limiting plates (41) is the same as the maximum circular diameter of the limiting grooves (4).

6. The combined spiral woodworking knife according to claim 5, characterized in that: A fixing seat (31) is arranged on the outer side of the top surface of the bottom cover (3); the conversion shaft (14) passes through the cutter body (1), and first bearings (16) are arranged on both end surfaces of the cutter body (1) at both ends of the conversion shaft (14), and the bottom of the conversion shaft (14) is connected to the fixing seat (31).

7. The combined spiral woodworking knife according to claim 1, characterized in that: A third bearing (23) is arranged inside the top cover (2), the third bearing (23) is tangent to the inner wall of the top cover (2), a gear ring disk (24) is arranged inside the third bearing (23), a second bearing (21) is arranged on the top surface of the top cover (2), an output shaft (22) is arranged inside the second bearing (21), and the output shaft (22) passes through the top cover (2) and the gear ring disk (24).

8. The combined spiral woodworking knife according to claim 7, characterized in that: A driven gear (15) is arranged on the top of the knife shaft (13); the top surface of the driven gear (15) is flush with the top surface of the ring gear in the ring gear disk (24); and the plurality of driven gears (15) are not meshed with the ring gear disk (24) at the same time.

9. The combined spiral woodworking knife according to claim 8, characterized in that: A bearing disc (6) is arranged at the top end of the conversion shaft (14), and the other end of the bearing disc (6) is connected to the output shaft (22); a deflection wheel (7) is arranged on the conversion shaft (14), the main body of the deflection wheel (7) is an equilateral triangle, one side of the deflection wheel (7) is an arc, and the straight edge of the deflection wheel (7) is parallel to the cross-sectional edge of the knife body (1); the deflection wheel (7) is located between the driven gear (15) and the limiting groove (4); a fourth bearing (71) is also arranged at the top of the knife shaft (13), and the position and thickness of the fourth bearing (71) correspond to those of the deflection wheel (7).

10. The combined spiral woodworking knife according to claim 1, characterized in that: A plurality of mounting grooves (5) are provided at both ends of the blade body (1), and magnetic blocks (51) are provided inside the mounting grooves (5). The magnetic blocks (51) are flush with the end surface of the blade body (1), and each mounting groove (5) is located at a top corner of the blade body (1); the bottom surface of the top cover (2) and the top surface of the bottom cover (3) are both provided with mounting grooves (5), and magnetic blocks (51) are also provided inside the mounting grooves (5). The magnetic blocks (51) are also flush with the bottom surface of the top cover (2) and the top surface of the bottom cover (3); the number and position of the mounting grooves (5) on the bottom surface of the top cover (2) and the top surface of the bottom cover (3) correspond to the number and position of the mounting grooves (5) at both ends of the bottom cover (3).

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