Round bottom cutter

Abstract

The utility model belongs to the technical field of round dead knives, and particularly relates to a round dead knife, which comprises a knife head, a cutting blade and a chip groove, the first cutter handle is integrally connected with the cutter head and comprises an insertion hole and a plurality of fixing holes, the insertion hole is formed in the axial end of the first cutter handle, and the fixing holes are formed in the outer wall of the first cutter handle in the axial direction; the second knife handle is provided with an insertion column which is in insertion fit with the insertion hole; the fastening screw is mounted on one of the fixing holes and is in threaded connection with the insertion column; the cushion blocks are arranged on the inserting columns in a sleeving mode and located between the first cutter handle and the second cutter handle; the round dead knife has the advantages that the overall length of the knife handle is changed, the round dead knife can be applied to machining of round-bottom grooves with different depths, the application range of the round dead knife is widened, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of round bottom knives, in particular to a round bottom knife. Background Art

[0002] With the continuous development of wood processing machinery industry, there are more and more types of milling cutters used for wood processing. Round bottom cutters are a type of woodworking milling cutters, which are usually used to perform round bottom trimming on the grooves on the wood, making the bottom of the grooves in an arc shape.

[0003] In the prior art, the handle length of most round-bottom knives is fixed. However, during the processing of wood, it is often necessary to perform round-bottom processing on grooves of multiple depths, which requires workers to be equipped with multiple round-bottom knives with different handle lengths for replacement, thereby increasing processing costs. Utility Model Content

[0004] The purpose of the utility model is to provide a round bottom knife in order to solve the above-mentioned technical problems, so as to achieve the effect that the overall length of the handle of the round bottom knife can be adjusted.

[0005] In view of this, the utility model provides a round bottom knife, comprising:

[0006] A cutter head, wherein a cutting blade and a chip removal groove are provided on the cutter head;

[0007] A first knife handle is integrally connected to the knife head, and the first knife handle includes an insertion hole and a plurality of fixing holes. The insertion hole is provided on an axial end portion of the first knife handle, and the plurality of fixing holes are axially provided on an outer wall of the first knife handle;

[0008] A second knife handle is provided with an inserting post, which is plugged into and matched with the socket;

[0009] A fastening screw is installed in one of the fixing holes and is threadedly connected to the plug post;

[0010] A plurality of pads are sleeved on the plug posts and located between the first tool handle and the second tool handle.

[0011] Furthermore, the plug post also includes:

[0012] The convex strip is provided on the outer wall of the plug post;

[0013] The jack also includes:

[0014] A first sliding groove is provided on the inner wall of the insertion hole;

[0015] The first sliding groove is adapted to be engaged with the convex strip.

[0016] Furthermore, the pad also includes:

[0017] A second chute, the second chute being provided on the inner wall of the cushion block;

[0018] The second sliding groove is also adapted to be engaged with the convex strip.

[0019] Furthermore, the pad also includes:

[0020] A protrusion is provided on one end of the pad along the axial direction;

[0021] A groove is provided on the other end of the pad along the axial direction;

[0022] The protrusions and grooves are matched with each other.

[0023] Furthermore, elastic washers are provided on both axial ends of the cushion block.

[0024] Furthermore, a plurality of fixing holes are arranged on the outer wall of the first tool handle in a linear array along the axial direction.

[0025] Furthermore, it also includes:

[0026] Scale lines are arranged on the outer wall of the first handle.

[0027] The beneficial effects of the utility model are:

[0028] 1. By changing the amount of insertion between the plug and the socket, the connecting hole on the plug is connected to the fixing holes at different positions, and then locked with a fastening screw, the overall length of the tool handle can be changed. This allows the round bottom cutter to be used for processing round bottom grooves of different depths, effectively improving the applicability of the round bottom cutter and making it highly practical.

[0029] 2. Several pads are mounted on the posts and located on the first and second handles to compensate for the spacing and protect the posts, preventing them from being damaged by impact from foreign objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the utility model;

[0031] Figure 2 It is a partial structural sectional view of the utility model;

[0032] Figure 3 It is a partial structural cross-sectional view of the utility model from another perspective;

[0033] Figure 4 It is a structural diagram of the cushion block in the utility model;

[0034] The marks in the figure are:

[0035] 1. Tool head; 11. Cutting blade; 12. Chip groove; 2. First tool holder; 21. Insert hole; 22. Fixing hole; 23. First slide groove; 3. Second tool holder; 31. Insert column; 32. Raised strip; 4. Fastening screw; 5. Spacer; 51. Second slide groove; 52. Protrusion; 53. Groove; 54. Elastic washer. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0037] In the description of this application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0038] Example 1:

[0039] This embodiment provides a round bottom knife, comprising:

[0040] A cutter head 1 is provided with a cutting blade 11 and a chip removal groove 12;

[0041] A first handle 2, which is integrally connected to the cutter head 1. The first handle 2 includes a socket 21 and a plurality of fixing holes 22. The socket 21 is provided on an axial end portion of the first handle 2, and the plurality of fixing holes 22 are axially provided on an outer wall of the first handle 2.

[0042] A second handle 3 is provided with a plug post 31, which is plugged into the socket 21;

[0043] A fastening screw 4 is installed on one of the fixing holes 22 and is threadedly connected to the plug post 31;

[0044] A plurality of spacers 5 are sleeved on the inserting posts 31 and located between the first tool handle 2 and the second tool handle 3 .

[0045] In this technical solution, the handle of a round-bottomed knife is composed of a first handle 2 and a second handle 3. The post 31 of the second handle 3 is plugged into the socket 21 of the first handle 2. A connecting hole is provided on the post 31, which is connected to one of the fixing holes 22. A fastening screw 4 is then provided through the fixing hole 22 and threadedly connected to the connecting hole, thereby locking the first and second handles 2 and 3. This structural design allows the overall length of the handle to be adjusted. By changing the insertion distance between the post 31 and the socket 21, the connecting hole on the post 31 can be connected to the fixing hole 22 at different positions. The fastening screw 4 is then used to tighten the handle, thereby changing the overall length of the handle. This allows the round-bottomed knife to be used for processing round-bottomed grooves 53 of different depths, effectively expanding the range of applications of the round-bottomed knife and improving its practicality. In addition, if the cutter head 1 of the round-bottomed knife is damaged after long-term use, only the cutter head 1 and the first handle 2 need to be replaced, effectively reducing maintenance costs and improving economic benefits.

[0046] When adjusting the overall length of the handle of a round-bottomed knife, the post 31 may not be fully inserted into the insertion hole 21, resulting in a certain gap between the first handle 2 and the second handle 3. Spacers 5 are provided between the first handle 2 and the second handle 3 to compensate for this gap. The spacers 5 are annular in shape, and the specific number of spacers 5 is set according to the adjustment amount of the overall handle length. Several spacers 5 are placed on the post 31 and between the first handle 2 and the second handle 3, compensating for the gap and protecting the post 31 from damage caused by external impact.

[0047] Example 2:

[0048] This embodiment provides a round bottom knife, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] Furthermore, the plug post 31 further includes:

[0050] The convex strip 32 is provided on the outer wall of the plug post 31;

[0051] The socket 21 also includes:

[0052] A first sliding groove 23 is provided on the inner wall of the insertion hole 21;

[0053] The first sliding groove 23 is adapted to be engaged with the protruding strip 32 .

[0054] In this technical solution, the convex strip 32 on the plug post 31 is adapted to snap into contact with the first slide groove 23 in the socket 21, which plays a certain guiding role in the connection between the plug post 31 and the socket 21, making it easier for the connecting hole on the plug post 31 to be aligned with the fixing hole 22 on the first handle 2, thereby making the installation connection between the first handle 2 and the second handle 3 more convenient and quick, and highly practical.

[0055] Furthermore, the pad 5 also includes:

[0056] A second chute 51 is provided on the inner wall of the cushion block 5;

[0057] The second sliding groove 51 is also adapted to be engaged with the protruding strip 32 .

[0058] Through this structural design, a second slide groove 51 that is adapted to the protrusion 32 of the plug post 31 is provided on the pad 5. When the pad 5 is sleeved on the plug post 31, the protrusion 32 is adapted to be engaged with the second slide groove 51, thereby limiting the circumferential deflection of the pad 5 on the plug post 31, and effectively improving the connection stability between the pad 5 and the plug post 31.

[0059] Example 3:

[0060] This embodiment provides a round bottom knife, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0061] Furthermore, the pad 5 also includes:

[0062] A protrusion 52 is provided on one end of the pad 5 in the axial direction;

[0063] A groove 53 is provided on the other end of the pad 5 in the axial direction;

[0064] The protrusion 52 and the groove 53 are structurally matched.

[0065] In this technical solution, a protrusion that fits into the groove 53 is provided on the second handle 3, and a recessed hole that fits into the protrusion 52 is provided on the first handle 2. When multiple spacers 5 are mounted on the plug post 31, adjacent spacers 5 are connected by the interlocking engagement of the protrusions 52 and the grooves 53. The spacer 5 is connected to the first handle 2 by the interlocking engagement of the protrusion 52 and the recessed hole, and the spacer 5 is connected to the second handle 3 by the interlocking engagement of the protrusion 53 and the protrusion. This structural design effectively enhances the connection stability between the spacer 5 and the first handle 2, between the spacers 5 and the second handle 3, and between the spacer 5 and the second handle 3.

[0066] Example 4:

[0067] This embodiment provides a round bottom knife, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0068] Furthermore, elastic washers 54 are provided on both axial ends of the cushion block 5 .

[0069] In this technical solution, the elastic washer 54 is made of rubber. The provision of the elastic washer 54 compensates for the spacing between the pad 5 and the first handle 2, the spacing between the pads 5 and the second handle 3, and the spacing between the pads 5 and the second handle 3. This makes the structure of the first handle 2, the pad 5, and the second handle 3 more compact and the connection more stable and reliable. It also provides a certain degree of waterproof and dustproof effect, effectively preventing rust from the plug post 31 and the socket 21. It is worth mentioning that when there are two or more pads 5, only one elastic washer 54 can be provided between two adjacent pads 5.

[0070] Example 5:

[0071] This embodiment provides a round bottom knife, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] Furthermore, a plurality of fixing holes 22 are arranged on the outer wall of the first shank 2 in a linear array along the axial direction.

[0073] Furthermore, it also includes:

[0074] Scale lines are set on the outer wall of the first handle 2.

[0075] In this technical solution, the scale value on the scale line corresponds to the overall length of the handle of the round bottom knife, and each fixing hole 22 corresponds to the scale value on the scale line one by one. Through this structural design, after the first handle 2 and the second handle 3 are fixed together, the staff can understand the processing depth of the round bottom knife by observing the scale value corresponding to the fixing hole 22 where the fastening screw 4 is installed, which is convenient and practical.

[0076] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A round bottom knife, characterized in that: include: A cutter head (1), wherein the cutter head (1) is provided with a cutting blade (11) and a chip removal groove (12); A first knife handle (2), the first knife handle (2) being integrally connected to the knife head (1), the first knife handle (2) comprising an insertion hole (21) and a plurality of fixing holes (22), the insertion hole (21) being arranged on an axial end portion of the first knife handle (2), and the plurality of fixing holes (22) being axially arranged on an outer wall of the first knife handle (2); A second knife handle (3), wherein the second knife handle (3) is provided with an inserting column (31), and the inserting column (31) is plugged into and matched with the insertion hole (21); A fastening screw (4), the fastening screw (4) being installed on one of the fixing holes (22) and being threadedly connected to the plug post (31); A plurality of cushion blocks (5) are sleeved on the inserting column (31) and are located between the first knife handle (2) and the second knife handle (3).

2. A round bottom knife according to claim 1, characterized in that: The plug post (31) further comprises: A convex strip (32), wherein the convex strip (32) is provided on the outer wall of the plug post (31); The jack (21) further comprises: A first sliding groove (23), wherein the first sliding groove (23) is provided on the inner wall of the insertion hole (21); Wherein, the first sliding groove (23) is adapted to be snap-fitted with the convex strip (32).

3. A round bottom knife according to claim 2, characterized in that: The cushion block (5) further comprises: a second chute (51), the second chute (51) being arranged on the inner wall of the cushion block (5); The second sliding groove (51) is also adapted to be engaged with the convex strip (32).

4. A round bottom knife according to claim 1, characterized in that: The cushion block (5) further comprises: A protrusion (52), wherein the protrusion (52) is provided on one end of the pad (5) along the axial direction; A groove (53), wherein the groove (53) is provided on the other end of the pad (5) along the axial direction; Wherein, the protrusion (52) and the groove (53) are structurally compatible.

5. The round bottom knife according to claim 1, characterized in that: Elastic washers (54) are provided on both axial ends of the cushion block (5).

6. The round bottom knife according to claim 1, characterized in that: A plurality of fixing holes (22) are arranged on the outer wall of the first shank (2) in a linear array along the axial direction.

7. The round bottom knife according to claim 1, characterized in that: Also includes: Scale lines are provided on the outer wall of the first knife handle (2).

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