Household knife edge fixed angle grinding device

Abstract

This invention relates to a household knife edge-fixed-angle grinding device. The purpose of this invention is to achieve fixed-angle grinding of the cutting edges of household knives. The invention includes a base (1), a fixed circular guide rail (2), a movable circular guide rail (3), a sliding fixed seat (4), a set screw (5), a bearing fixed seat (6), a deep groove ball bearing (7), a linear bearing (8), a shaft elastic retaining ring (9), an internal hexagonal head screw (10), an angle rotating shaft slider (11), an angle rotating shaft (12), a knife holder (13), a square-headed elongated cylindrical end set screw (14), a knife (15), a whetstone (16), and a whetstone seat (17). This invention is particularly effective for fixed-angle grinding of household knives with non-linear cutting edges.

Description

Technical Field

[0001] The invention relates to a household tool grinding device, in particular to a household tool edge fixed-angle grinding device. Background Art

[0002] The traditional grinding method for household knives is mostly manual grinding, and the grinding angle of the cutting edge is constantly changing, and fixed-angle grinding is impossible. Due to the limitations of the device itself and the limitations of the grinding angle adjustment method, some existing household knife grinding devices cannot perform fixed-angle grinding, especially for household knives with non-straight cutting edges. For cutting edges with larger arcs, the inconsistency of the cutting edge grinding angle is even more prominent. Due to the limitations of the device itself and the limitations of the grinding angle adjustment method, some existing household knife grinding devices cannot perform re-grinding according to the original angle of the cutting edge of the tool due to the need for multiple re-clamping for repeated grinding of the same tool cutting edge. Summary of the invention

[0003] The invention aims to realize the fixed-angle grinding of the cutting edge of a household knife.

[0004] The traditional grinding method of household knives is mostly manual grinding. Even a skilled knife sharpener cannot grind the cutting edge at a fixed angle. Some existing household knife grinding devices cannot grind the cutting edge at a fixed angle due to the limitations of the device itself and the limitations of the grinding angle adjustment method, especially for household knives with non-linear cutting edges. For cutting edges with relatively large curvatures, the inconsistency of the cutting edge grinding angle is even more prominent. Some existing household knife grinding devices cannot grind the same cutting edge at the original angle of the cutting edge due to the need for multiple re-clamping for repeated grinding of the same cutting edge. The purpose of the present invention is to achieve fixed-angle grinding of the cutting edge of household knives, especially for household knives with non-linear cutting edges, and can also achieve fixed-angle grinding for cutting edges with relatively large curvatures.

[0005] The technical solution adopted by the present invention is as follows (see Figure 1 , Figure 2 ):

[0006] The present invention comprises a base (1), two fixed circular guide rails (2) are fixedly mounted on the base (1), two movable circular guide rails (3) are respectively fixedly mounted on four sliding fixed seats (4) by means of four set screws (5), the four sliding fixed seats (4) are respectively connected to the two fixed circular guide rails (2) through their respective sliding bearing holes, an angle shaft slider (11) is respectively connected to the two movable circular guide rails (3) through its own two sliding bearing holes, a deep groove ball bearing (7) is mounted on the bearing fixed seat (6), two hexagon socket head screws (10) are used to fix the bearing fixed seat (6) on the angle shaft slider (11), a linear bearing (8) is mounted on the inner hole of the deep groove ball bearing (7), and two shafts are respectively connected to the two movable circular guide rails (3) through their own two sliding bearing holes. The tool holder (13) is connected to the upper part of the angle shaft (12) through its own sliding bearing hole, and the tool holder (13) can freely rotate around the upper part of the angle shaft (12). Two square head long cylindrical end set screws (14) are connected to the tool holder (13) through threads, and the tool (15) is fixed to the tool holder (13) through the two square head long cylindrical end set screws (14). The grindstone seat (17) is fixedly arranged at a certain position of the base (1), and the grindstone (16) is fixedly installed on the grindstone seat (17).

[0007] The beneficial effects of the present invention are: for household knives with non-linear cutting edges, fixed-angle grinding can be achieved, and for cutting edges with relatively large curvatures, the grinding angle of the cutting edge can also be made consistent; for repeated clamping and grinding of the same cutting edge, the clamping position does not need to be fixed, and the cutting edge can be ground again according to the original angle of the cutting edge. Therefore, the present invention can improve the grinding quality of the cutting edge, reduce the grinding amount of the cutting edge, improve the grinding efficiency, and reduce the technical requirements for the cutting edge grinding personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the principle of the present invention;

[0009] Figure 2 yes Figure 1 A partial enlarged view of location Ⅰ;

[0010] Figure 3 is a structural diagram of specific implementation method 3;

[0011] Figure 4 yes Figure 3An enlarged view of the mechanism composed of some components, which are: 15, tool; 18, bearing support; 19, hinge shaft bracket; 20, fisheye bolt; 21, locking hinge shaft; 22, angle hinge shaft; 23, tool clamping frame; 25, deep groove ball bearing; 26, knurled high head screw; 27, pin shaft; 28, cotter pin; 29, welded hexagonal nut; 30, knurled high head screw; 31, hexagon socket cylindrical head screw; 32, hexagonal nut.

[0012] Figure 5 is a structural diagram of specific implementation mode 4;

[0013] Figure 6 yes Figure 5 A partial enlarged view of location II;

[0014] Figure 7 is a schematic diagram of the angle rotation axis (12);

[0015] In the figure: 1. base; 2. fixed circular guide rail; 3. movable circular guide rail; 4. sliding fixed seat; 5. set screw; 6. bearing fixed seat; 7. deep groove ball bearing; 8. linear bearing; 9. elastic retaining ring for shaft; 10. hexagon socket head screw; 11. angle shaft slider; 12. angle shaft; 13. tool holder; 14. square head long cylindrical end set screw; 15. tool; 16. grindstone; 17. grindstone seat; 18. bearing support; 19. hinge shaft frame; 20. fisheye bolt; 21. locking hinge shaft; 22. angle hinge shaft; 23. tool holder; 25. deep groove ball bearing; 26. knurled high head screw; 27. pin shaft; 28. cotter pin; 29. ​​welded hexagon nut; 30. knurled high head screw; 31. hexagon socket head screw; 32. hexagon nut; 33. spring; 34. spring washer. DETAILED DESCRIPTION

[0016] Method 1 (see Figure 1 , Figure 2 ):

[0017] A specific embodiment of the present invention comprises a base (1), two fixed circular guide rails (2) are fixedly mounted on the base (1), two movable circular guide rails (3) are respectively fixedly mounted on four sliding fixed seats (4) by means of four set screws (5), the four sliding fixed seats (4) are respectively connected to the two fixed circular guide rails (2) through their respective sliding bearing holes, an angle shaft slider (11) is respectively connected to the two movable circular guide rails (3) through its own two sliding bearing holes, a deep groove ball bearing (7) is mounted on a bearing fixed seat (6), two hexagon socket head screws (10) fix the bearing fixed seat (6) on the angle shaft slider (11), and a linear bearing (8) is mounted on the inner hole of the deep groove ball bearing (7). , the two shafts are mounted on the slots of the linear bearing (8) with elastic retaining rings (9), the lower part of the angle shaft (12) is connected and mounted with the inner hole of the linear bearing (8), the tool holder (13) is connected with the upper part of the angle shaft (12) through its own sliding bearing hole, the tool holder (13) can freely rotate around the upper part of the angle shaft (12), two square head long cylindrical end set screws (14) are connected with the tool holder (13) through threads, the tool (15) is fixed on the tool holder (13) through the two square head long cylindrical end set screws (14), the grindstone seat (17) is fixedly placed at a certain position of the base (1), and the grindstone (16) is fixedly mounted on the grindstone seat (17). Among them, the upper part axis of the angle shaft (12) and the lower part axis form an angle of 45 degrees (see Figure 7 ). There is an axial sliding space between the lower part of the angle shaft (12) and the linear bearing (8). There is no axial sliding space between the upper part of the angle shaft (12) and the sliding bearing hole of the tool holder (13). The determination of the tool edge grinding angle is achieved by designing the tool holder (13).

[0018] Method 2:

[0019] In a first specific embodiment of the present invention, the design of the tool holder (13) is not changed, and the tool edge grinding angle is determined by changing the design of the angle shaft (12), that is, by changing the angle between the upper axis and the lower axis of the angle shaft (12).

[0020] Method 3 (see Figure 3 , Figure 4 ):

[0021] The tool holder (13) and the square head long cylindrical end set screw (14) in the first embodiment of the present invention are replaced by a mechanism consisting of a bearing support (18), a hinge shaft frame (19), a fisheye bolt (20), a locking hinge shaft (21), an angle hinge shaft (22), a tool holder (23), a deep groove ball bearing (25), a knurled high head screw (26), a pin shaft (27), a cotter pin (28), a welded hexagonal nut (29), a knurled high head screw (30), a hexagon socket head screw (31), and a hexagonal nut (32). Two welded hexagon nuts (29) are welded to the corresponding holes of the tool holder (23), two knurled high head screws (30) are connected to the corresponding two welded hexagon nuts (29) through threads, the two knurled high head screws (30) clamp the tool (15) on the tool holder (23), two hexagon socket head screws (31) and corresponding two hexagon nuts (32) fix the hinge shaft frame (19) on the bearing support (18), and the deep groove ball bearing (25) is fixedly installed in the hole of the bearing support (18). The deep groove ball bearing (25) is connected to the angle rotating shaft (12) through the inner hole, the angle hinge shaft (22) connects the tool clamping frame (23) and the hinge shaft frame (19), the pin shaft (27) connects the fisheye bolt (20) and the tool clamping frame (23), the cotter pin (28) is installed in the hole of the pin shaft (27), the locking hinge shaft (21) and the hinge shaft frame (19) are hinged, the knurled high head screw (26) is connected to the locking hinge shaft (21) through a thread, and the rod of the fisheye bolt (20) is connected to the hole of the locking hinge shaft (21). By adjusting the knurled high head screw (26) to press the fisheye bolt (20) at different positions, the grinding angle of the tool edge can be changed.

[0022] Method 4 (see Figure 5 , Figure 6 ):

[0023] In the first specific embodiment of the present invention, a spring (33) and a spring washer (34) are added, and the spring (33) and the spring washer (34) are respectively sleeved on the lower part of the angle shaft (12), the lower end of the spring (33) is supported on the upper end surface of the linear bearing (8), the upper end of the spring (33) is supported on the spring washer (34), and the spring washer (34) is clamped on the protrusion of the lower part of the angle shaft (12). The design of the angle shaft (12) is not changed, and the design of the tool holder (13) is changed to achieve the determination of the tool edge grinding angle.

[0024] The above four specific implementations of the present invention more specifically and vividly embody the basic principles, main features and advantages of the present invention. Based on the spirit and protection scope of the present invention, there are more ways and improvements, all of which are within the protection scope of this patent.

Claims

1. A household knife edge fixed angle grinding device, comprising a base (1), a whetstone seat (17) fixedly arranged at a certain position of the base (1), a whetstone (16) fixedly mounted on the whetstone seat (17), characterized in that: Two fixed circular guide rails (2) are fixedly mounted on a base (1); two movable circular guide rails (3) are respectively fixedly mounted on four sliding fixed seats (4) by means of four set screws (5); the four sliding fixed seats (4) are respectively connected to the two fixed circular guide rails (2) through their respective sliding bearing holes; the angle shaft slider (11) is respectively connected to the two movable circular guide rails (3) through its own two sliding bearing holes; a deep groove ball bearing (7) is mounted on a bearing fixed seat (6); two hexagon socket head screws (10) are used to fix the bearing fixed seat (6) on the angle shaft slider (11); a linear bearing (8) is mounted inside the deep groove ball bearing (7); The two shafts are mounted on the slots of the linear bearing (8) with elastic retaining rings (9); the axis of the upper part of the angle rotating shaft (12) is not parallel to the axis of the lower part; the lower part of the angle rotating shaft (12) is connected and mounted with the inner hole of the linear bearing (8); the tool holder (13) is connected with the upper part of the angle rotating shaft (12) through its own sliding bearing hole; the tool holder (13) can freely rotate around the upper part of the angle rotating shaft (12); two square head long cylindrical end set screws (14) are connected with the tool holder (13) through threads; and the tool (15) is fixed on the tool holder (13) through the two square head long cylindrical end set screws (14).

2. A household knife edge fixed angle grinding device according to claim 1, characterized in that: There may or may not be an axial sliding space between the upper portion of the angle rotating shaft (12) and the sliding bearing hole of the tool clamping frame (13).

3. A household knife edge fixed angle grinding device according to claim 1, characterized in that: An axial sliding space is provided between the lower part of the angle rotating shaft (12) and the linear bearing (8).

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