A quick disassembly and assembly structure, drill bit and quick disassembly and assembly method

Abstract

The invention discloses a quick disassembly and assembly structure, a drill bit and a quick disassembly and assembly method, which relate to the technical field of drill bits. A quick disassembly and assembly structure comprises: a first component, an axial positioning groove is provided inside one end of the first component; a second component, one end of the second component is circumferentially positioned and sleeved inside one end of the first component; a positioning block rotatably connected to the second component, one end of the positioning block is provided with a first transition portion, and the other end of the positioning block is provided with a second transition portion; an elastic member and a locking sleeve both sleeved outside the second component, one end of the elastic member contacts the locking sleeve, and the other end of the elastic member contacts the second component; an inclined portion provided on the locking sleeve, the radial size of the inclined portion gradually decreasing along the direction from the first component to the second component; wherein, one end of the positioning block and the first transition portion are both matched with the axial positioning groove, and the other end of the positioning block and the second transition portion are both matched with the inclined portion.

Description

Technical Field

[0001] The present invention relates to the technical field of drill bits, and in particular to a quick disassembly and assembly structure, a drill bit and a quick disassembly and assembly method. Background Art

[0002] A drill bit is a hole processing tool, generally including deep hole drills, center drills, etc. It has the advantage of high hole processing efficiency and is widely used in the field of hole processing.

[0003] In order to replace the drill bit in time during the cutting process, the connection between the drill bit and the shank is generally a detachable connection. However, the detachable connection easily leads to poor connection firmness between the drill bit and the shank, thereby causing axial relative movement of the drill bit and the shank. At the same time, the drill bit and the shank are difficult to disassemble and assemble smoothly, which easily leads to slow disassembly and assembly speed of the drill bit. Summary of the Invention

[0004] In response to the above technical problems, the present invention provides a quick disassembly and assembly structure, a drill bit and a quick disassembly and assembly method, which can not only effectively prevent the cutter head and the cutter handle from axial relative movement, but also have a faster disassembly and assembly speed.

[0005] In order to solve the above problems, the technical solution provided by the present invention is:

[0006] A quick disassembly and assembly structure, comprising:

[0007] A first member, wherein an axial positioning groove is provided inside one end of the first member;

[0008] a second member, one end of the second member being circumferentially positioned and sleeved inside one end of the first member;

[0009] a positioning block rotatably connected to the second member, wherein one end of the positioning block is provided with a first transition portion, and the other end of the positioning block is provided with a second transition portion;

[0010] an elastic member and a locking sleeve both sleeved on the outside of the second member, one end of the elastic member in contact with the locking sleeve, and the other end of the elastic member in contact with the second member;

[0011] An inclined portion provided on the locking sleeve, wherein the radial dimension of the inclined portion gradually decreases along the direction from the first component to the second component;

[0012] Wherein, one end of the positioning block and the first transition portion are both matched with the axial positioning groove, and the other end of the positioning block and the second transition portion are both matched with the inclined portion.

[0013] Optionally, the positioning block includes:

[0014] a block body rotatably connected to the second member;

[0015] a first positioning protrusion connected to one end of the block body;

[0016] a second positioning protrusion connected to the other end of the block body;

[0017] Wherein, the first positioning protrusion cooperates with the axial positioning groove, and the second positioning protrusion cooperates with the inclined portion.

[0018] Optionally, it further includes a groove provided on the second component, and the positioning block is rotatably connected in the groove.

[0019] Optionally, it further includes a support pin connected to the second component, and the positioning block is rotatably sleeved outside the support pin.

[0020] Optionally, it further includes a tight-fitting set sleeved on the outside of the second component, both ends of the support pin are in contact with the inner wall of the tight-fitting set, and the tight-fitting set is in contact with the locking sleeve.

[0021] Optionally, it further includes a step portion sleeved on the outside of the second component, and the other end of the elastic member is in contact with the step portion.

[0022] Optionally, a circumferential positioning hole is provided inside one end of the first component, and a circumferential positioning body is provided at one end of the second component, and the circumferential positioning hole and the circumferential positioning body cooperate with each other.

[0023] Optionally, the elastic member is made of carbon spring steel or low manganese spring steel.

[0024] A drill bit, comprising a quick disassembly and assembly structure, and further comprising:

[0025] a plurality of blades connected to the other end of the first member;

[0026] A handle is connected to the other end of the second member.

[0027] Optionally, also include:

[0028] a pilot drill body detachably connected to the second member;

[0029] An elastic body is sleeved on the outside of the pilot drill body, and the elastic body is connected to one end of the second component.

[0030] A quick disassembly and assembly method, comprising:

[0031] During installation, the locking sleeve is first moved in a direction close to the elastic member, so that the elastic member is compressed and the inclined portion of the locking sleeve is separated from the other end of the positioning block. Then, one end of the positioning block is pressed to make the positioning block rotate around the second member to prevent one end of the positioning block from blocking the first member. Then, the circumferential positioning sleeve of the first member is connected to the outside of the second member until the axial positioning groove and one end of the positioning block correspond to each other. Finally, the locking sleeve is released to reset the elastic member, thereby making the locking sleeve move away from the elastic member, and then the inclined portion of the locking sleeve presses the other end of the positioning block to make the positioning block rotate around the second member, and finally one end of the positioning block is matched with the axial positioning groove to complete the axial positioning of the first and second members.

[0032] During disassembly, first move the locking sleeve toward the elastic member to compress the elastic member and separate the inclined portion of the locking sleeve from the other end of the positioning block. Then, lift the other end of the positioning block to rotate the positioning block around the second component and separate one end of the positioning block from the axial positioning groove. Finally, move the first component away from the second component to complete the disassembly.

[0033] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: during installation, the locking sleeve is first moved in a direction close to the elastic member, so that the elastic member is compressed, and at the same time, the inclined portion of the locking sleeve and the other end of the positioning block are separated, and then one end of the positioning block is pressed to make the positioning block rotate around the second member to prevent one end of the positioning block from blocking the first member, and then the circumferential positioning sleeve of the first member is connected to the outside of the second member until the axial positioning groove and one end of the positioning block correspond to each other, and finally the locking sleeve is released to reset the elastic member, thereby making the locking sleeve move in a direction away from the elastic member, and then the inclined portion of the locking sleeve presses the other end of the positioning block to make the positioning block rotate around the second member, and finally one end of the positioning block cooperates with the axial positioning groove to complete the axial positioning of the first member and the second member. When the quick disassembly and assembly structure is used for a drill bit, it is convenient to effectively prevent the cutter head and the tool holder from axial relative movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is one of the structural schematic diagrams of a drill bit proposed in an embodiment of the present invention;

[0035] Figure 2 This is a second structural diagram of a drill bit proposed in an embodiment of the present invention;

[0036] Figure 3 for Figure 2 Partial diagram of A in the middle;

[0037] Figure 4 A partial schematic diagram of a quick disassembly and assembly structure proposed in an embodiment of the present invention;

[0038] Figure 5 A schematic structural diagram of a second component proposed in an embodiment of the present invention;

[0039] In the figure: 1. first component; 11. axial positioning groove; 12. circumferential positioning hole; 2. second component; 21. groove; 22. step portion; 23. circumferential positioning body; 24. accommodating hole; 3. positioning block; 31. first positioning protrusion; 32. second positioning protrusion; 33. block body; 34. first transition portion; 35. second transition portion; 4. elastic member; 5. locking sleeve; 51. inclined portion; 6. support pin; 7. tight matching set; 8. blade; 9. handle; 100. centering drill body; 110. elastic body; 120. axis. DETAILED DESCRIPTION

[0040] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0041] The present application will be further described below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended solely to illustrate the relevant inventions and are not intended to limit the inventions. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the drawings. Terms such as "first" and "second" in the present application are provided for the convenience of describing the technical solutions of the present invention and do not have a specific limiting effect. They are general references and do not constitute a limitation on the technical solutions of the present invention. It should be noted that the embodiments and features therein in the present application may be combined with each other unless there is a conflict. In the description of the present invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present invention.

[0042] Example 1

[0043] Combined with attachment Figure 1-5 , this embodiment provides a quick disassembly and assembly structure, including:

[0044] A first component 1, wherein an axial positioning groove 11 is provided inside one end of the first component 1;

[0045] A second member 2, one end of the second member 2 is circumferentially positioned and sleeved inside one end of the first member 1;

[0046] A positioning block 3 is rotatably connected to the second member 2, wherein one end of the positioning block 3 is provided with a first transition portion 34, and the other end of the positioning block 3 is provided with a second transition portion 35;

[0047] An elastic member 4 and a locking sleeve 5 are both sleeved on the outside of the second member 2, one end of the elastic member 4 contacts the locking sleeve 5, and the other end of the elastic member 4 contacts the second member 2;

[0048] The inclined portion 51 provided on the locking sleeve 5 has a radial dimension that gradually decreases from the first component 1 to the second component 2;

[0049] One end of the positioning block 3 and the first transition portion 34 both cooperate with the axial positioning groove 11 , and the other end of the positioning block 3 and the second transition portion 35 both cooperate with the inclined portion 51 .

[0050] Specifically, during installation, the locking sleeve 5 is first moved in the direction close to the elastic member 4, so that the elastic member 4 is compressed, and at the same time, the inclined portion 51 of the locking sleeve 5 is separated from the other end of the positioning block 3, and then one end of the positioning block 3 is pressed to make the positioning block 3 rotate around the second member 2 to prevent one end of the positioning block 3 from blocking the first member 1. Then, the circumferential positioning sleeve of the first member 1 is connected to the outside of the second member 2 until the axial positioning groove 11 corresponds to one end of the positioning block 3, and finally the locking sleeve 5 is released to reset the elastic member 4, thereby making the locking sleeve 5 move away from the elastic member 4, and then the inclined portion 51 of the locking sleeve 5 presses the other end of the positioning block 3 to make the positioning The block 3 rotates around the second member 2, and finally one end of the positioning block 3 is matched with the axial positioning groove 11 to complete the axial positioning of the first member 1 and the second member 2. When the quick disassembly structure is used for a drill bit, it is convenient to effectively prevent the cutter head and the tool handle from axial relative movement. During disassembly, the locking sleeve 5 is first moved in a direction close to the elastic member 4 to compress the elastic member 4, and at the same time, the inclined portion 51 of the locking sleeve 5 is separated from the other end of the positioning block 3. Then, the other end of the positioning block 3 is lifted, so that the positioning block 3 rotates around the second member 2, and at the same time, one end of the positioning block 3 is separated from the axial positioning groove 11. Finally, the first member 1 is moved away from the second member 2 to complete the disassembly.

[0051] Among them, one end of the second component 2 is circumferentially positioned and sleeved inside one end of the first component 1. Specifically, a circumferential positioning hole 12 can be provided inside one end of the first component 1, and a circumferential positioning body 23 can be provided at one end of the second component 2, and the circumferential positioning hole 12 and the circumferential positioning body 23 cooperate with each other; the material of the elastic member 4 can be carbon spring steel or low manganese spring steel, etc.; the radial dimension of the inclined portion 51 gradually decreases, specifically refers to the gradual decrease in the distance between the inclined portion 51 and the axis 120 of the second component 2, thereby facilitating the cooperation between the inclined portion 51 and the other end of the positioning block 3; the first transition portion 34 is used to increase the cooperation smoothness between one end of the positioning block 3 and the axial positioning groove 11, and the second transition portion 35 is used to increase the cooperation smoothness between the other end of the positioning block and the inclined portion 51, so that the disassembly of the first component and the second component is smooth. When the quick disassembly structure is used for a drill bit, it is convenient to make the disassembly and assembly of the cutter head and the tool handle smooth, thereby making the drill bit have a faster disassembly and assembly speed.

[0052] Further, such as Figure 3 , positioning block 3 includes:

[0053] A block body 33 rotatably connected to the second member 2;

[0054] a first positioning protrusion 31 connected to one end of the block body 33;

[0055] a second positioning protrusion 32 connected to the other end of the block body 33;

[0056] The first positioning protrusion 31 cooperates with the axial positioning groove 11 , and the second positioning protrusion 32 cooperates with the inclined portion 51 .

[0057] Specifically, the block body 33 is used to carry the first positioning protrusion 31 and the second positioning protrusion 32; the first positioning protrusion 31 is used to cooperate with the axial positioning groove 11 to facilitate axial positioning of the first component 1 and the second component 2; the second positioning protrusion 32 is used to cooperate with the inclined portion 51.

[0058] Further, such as Figure 3 , further comprising a groove 21 provided on the second component 2 , and the positioning block 3 is rotatably connected in the groove 21 .

[0059] Specifically, the groove 21 is used to accommodate the positioning block 3 , and in order to facilitate the rotation of the positioning block 3 in the groove 21 , the size of the groove 21 needs to be relatively large.

[0060] Further, such as Figure 3 , also includes a support pin 6 connected to the second component 2, and the positioning block 3 is rotatably sleeved on the outside of the support pin 6.

[0061] Specifically, the support pin 6 is used to support the positioning block 3. The support pin 6 can be a cylindrical pin, a conical pin, etc., preferably a cylindrical pin. In order to facilitate the accommodation of the support pin 6, an accommodating hole 24 for accommodating the support pin 6 is provided on the second component 2.

[0062] Further, such as Figure 1-2 , and also includes a tight-fitting set 7 sleeved on the outside of the second component 2, both ends of the support pin 6 are in contact with the inner wall of the tight-fitting set 7, and the tight-fitting set 7 is in contact with the locking sleeve 5.

[0063] Specifically, the tight-fitting sleeve 7 is used to both radially limit the support pin 6 and axially limit the locking sleeve 5 .

[0064] Further, such as Figure 1-2 , and also includes a step portion 22 sleeved on the outside of the second component 2, and the other end of the elastic member 4 is in contact with the step portion 22.

[0065] Specifically, the step portion 22 is used to axially limit the other end of the elastic member 4 .

[0066] Further, such as Figure 1-2 A circumferential positioning hole 12 is provided inside one end of the first component 1, and a circumferential positioning body 23 is provided at one end of the second component 2, and the circumferential positioning hole 12 and the circumferential positioning body 23 cooperate with each other.

[0067] Specifically, in order to prevent the circumferential positioning hole 12 and the circumferential positioning body 23 from rotating relative to each other, the cross-sectional shapes of the circumferential positioning hole 12 and the circumferential positioning body 23 are non-circular, specifically, they can be hexagonal, pentagonal or elliptical, etc., preferably hexagonal.

[0068] Furthermore, the elastic member 4 is made of carbon spring steel or low manganese spring steel.

[0069] This embodiment also provides a quick disassembly and assembly method, including:

[0070] During installation, first move the locking sleeve 5 toward the elastic member 4 to compress the elastic member 4 and at the same time separate the inclined portion 51 of the locking sleeve 5 from the other end of the positioning block 3. Then, press one end of the positioning block 3 to make the positioning block 3 rotate around the second member 2 to prevent one end of the positioning block 3 from blocking the first member 1. Then, the circumferential positioning sleeve of the first member 1 is connected to the outside of the second member 2 until the axial positioning groove 11 corresponds to one end of the positioning block 3. Finally, release the locking sleeve 5 to reset the elastic member 4, thereby moving the locking sleeve 5 away from the elastic member 4. Then, the inclined portion 51 of the locking sleeve 5 presses the other end of the positioning block 3 to make the positioning block 3 rotate around the second member 2 and finally make one end of the positioning block 3 cooperate with the axial positioning groove 11 to complete the axial positioning of the first member 1 and the second member 2.

[0071] During disassembly, first move the locking sleeve 5 toward the elastic member 4 to compress the elastic member 4 and separate the inclined portion 51 of the locking sleeve 5 from the other end of the positioning block 3. Then, lift the other end of the positioning block 3 to rotate the positioning block 3 around the second component 2. At the same time, separate one end of the positioning block 3 from the axial positioning groove 11. Finally, move the first component 1 away from the second component 2 to complete the disassembly.

[0072] Example 2

[0073] Combined with attachment Figure 1-5 This embodiment provides a drill bit, including the quick disassembly structure of embodiment 1, and further including:

[0074] a plurality of blades 8 connected to the other end of the first member 1;

[0075] A handle 9 is connected to the other end of the second member 2 .

[0076] Specifically, the first component 1 and a plurality of blades 8 are used to form a cutter head of the drill bit; the second component 2 and the shank 9 are used to form a shank of the drill bit.

[0077] Further, such as Figure 1-2 , also includes:

[0078] A pilot drill body 100 detachably connected to the second component 2;

[0079] The elastic body 110 is sleeved on the outside of the pilot drill body 100 and is connected to one end of the second component 2 .

[0080] Specifically, the pilot drill body 100 and the elastic body 110 are used to enable the drill bit to have good centering performance.

[0081] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A quick disassembly and assembly structure, characterized in that: include: A first member, wherein an axial positioning groove is provided inside one end of the first member; a second member, one end of the second member being circumferentially positioned and sleeved inside one end of the first member; a positioning block rotatably connected to the second member, wherein one end of the positioning block is provided with a first transition portion, and the other end of the positioning block is provided with a second transition portion; an elastic member and a locking sleeve both sleeved on the outside of the second member, one end of the elastic member in contact with the locking sleeve, and the other end of the elastic member in contact with the second member; An inclined portion provided on the locking sleeve, wherein the radial dimension of the inclined portion gradually decreases along the direction from the first component to the second component; Wherein, one end of the positioning block and the first transition portion are both matched with the axial positioning groove, and the other end of the positioning block and the second transition portion are both matched with the inclined portion.

2. A quick disassembly and assembly structure according to claim 1, characterized in that: The positioning block includes: a block body rotatably connected to the second member; a first positioning protrusion connected to one end of the block body; a second positioning protrusion connected to the other end of the block body; Wherein, the first positioning protrusion cooperates with the axial positioning groove, and the second positioning protrusion cooperates with the inclined portion.

3. A quick disassembly and assembly structure according to claim 2, characterized in that: It also includes a groove provided on the second component, and the positioning block is rotatably connected in the groove.

4. A quick disassembly and assembly structure according to any one of claims 1 to 3, characterized in that: It also includes a support pin connected to the second component, and the positioning block is rotatably sleeved outside the support pin.

5. The quick disassembly and assembly structure according to claim 4, characterized in that: It also includes a tight-fitting set sleeved on the outside of the second component, both ends of the support pin are in contact with the inner wall of the tight-fitting set, and the tight-fitting set is in contact with the locking sleeve.

6. A quick disassembly and assembly structure according to any one of claims 1 to 3, characterized in that: It also includes a step portion sleeved on the outside of the second component, and the other end of the elastic member is in contact with the step portion.

7. A quick disassembly and assembly structure according to any one of claims 1 to 3, characterized in that: A circumferential positioning hole is provided inside one end of the first component, and a circumferential positioning body is provided at one end of the second component, and the circumferential positioning hole and the circumferential positioning body cooperate with each other.

8. A drill bit, characterized in that: The quick disassembly and assembly structure according to any one of claims 1 to 7 further comprises: a plurality of blades connected to the other end of the first member; A handle is connected to the other end of the second member.

9. A drill bit according to claim 8, characterized in that: Also includes: a pilot drill body detachably connected to the second member; An elastic body is sleeved on the outside of the pilot drill body, and the elastic body is connected to one end of the second component.

10. A quick disassembly method of a quick disassembly structure according to any one of claims 1 to 7, characterized in that: include: During installation, the locking sleeve is first moved in a direction close to the elastic member, so that the elastic member is compressed and the inclined portion of the locking sleeve is separated from the other end of the positioning block. Then, one end of the positioning block is pressed to make the positioning block rotate around the second member to prevent one end of the positioning block from blocking the first member. Then, the circumferential positioning sleeve of the first member is connected to the outside of the second member until the axial positioning groove and one end of the positioning block correspond to each other. Finally, the locking sleeve is released to reset the elastic member, thereby making the locking sleeve move away from the elastic member, and then the inclined portion of the locking sleeve presses the other end of the positioning block to make the positioning block rotate around the second member, and finally one end of the positioning block is matched with the axial positioning groove to complete the axial positioning of the first and second members. During disassembly, first move the locking sleeve toward the elastic member to compress the elastic member and separate the inclined portion of the locking sleeve from the other end of the positioning block. Then, lift the other end of the positioning block to rotate the positioning block around the second component and separate one end of the positioning block from the axial positioning groove. Finally, move the first component away from the second component to complete the disassembly.

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