Cutting tool
By designing stop and return components, the cutting edge of the blade is housed within the installation space, solving the safety hazard problem of cutting tools when removing burrs from workpieces, and improving both safety and ease of operation.
Patent Information
- Application Number
- CN202422025483.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-08-20
AI Technical Summary
Existing cutting tools are prone to cutting hands when removing burrs from workpieces, posing a high safety hazard.
Design a cutting tool including a tool holder, a tool post, an insert, a stop and a return mechanism. Through the cooperation of the stop and the return mechanism, the cutting edge of the insert rotates into the installation space after cutting, reducing exposure and preventing scratches to the operator.
It effectively reduces safety hazards during cutting, improves operator safety, prevents hand injuries from the cutting edge, and enhances both safety and ease of operation.
Smart Images
Figure CN223506326U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of workpiece cutting technology, specifically to a cutting tool. Background Technology
[0002] Currently, cutting tools are used in the field of workpiece machining. For example, during the machining of plastic or metal workpieces, burrs often appear on the workpiece. These are typically removed using utility tools to ensure the workpiece's dimensions meet standards. However, this deburring method poses a significant safety hazard and can easily result in hand injuries. Utility Model Content
[0003] In view of the above, it is necessary to propose a cutting tool to reduce safety hazards during cutting.
[0004] This application provides a cutting tool, including: a tool holder; a tool post disposed at one end of the tool holder, the tool post including a connecting portion and two mounting arms, the two mounting arms being disposed opposite to each other and spaced apart, the connecting portion being located on the same side of the two mounting arms, the connecting portion being connected between the two mounting arms, the connecting portion and the two mounting arms together defining a mounting space; a cutting blade mounted in the mounting space, the cutting blade being rotatably disposed between the two mounting arms, the cutting blade having a cutting edge; a stop member disposed on at least one of the mounting arms, the stop member being located on the rotation path of the cutting blade to stop the cutting blade; and a return member disposed on at least one of the stop member and the cutting blade, the return member being used to rotate the cutting blade to a return state that stops the cutting blade, so that the cutting edge of the cutting blade is at least partially received within the mounting space.
[0005] In some embodiments, the mounting arm has an inner wall located within the mounting space, the blade has a pivot connected to the inner wall, the mounting arm has a first outer wall and a second outer wall, the first outer wall and the second outer wall are respectively located on opposite sides of the pivot, the inner wall is connected between the first outer wall and the second outer wall, and the cutting edge of the blade in the return state is located between the first outer wall and the second outer wall.
[0006] In some embodiments, the mounting arm has an end wall facing away from the connecting portion, the end wall being connected to the first outer wall and the second outer wall, the stop member being disposed on the inner wall, the stop member being located between the blade and the connecting portion, and the cutting edge of the blade in the returned state being located between the stop member and the end wall.
[0007] In some embodiments, the blade is an arc-shaped structure recessed away from the connecting portion, and the stop member is provided with a baffle on the side facing the first outer wall. The baffle is used to stop the blade, and the baffle is inclined relative to the first outer wall. The distance between the baffle and the first outer wall increases from the connecting portion toward the end wall.
[0008] In some embodiments, the stop member is disposed adjacent to the second outer wall relative to the first outer wall.
[0009] In some embodiments, the baffle and the first outer wall have a first tilt angle, the magnitude of the first tilt angle being a, wherein the value of a ranges from 10° to 65°.
[0010] In some embodiments, the return member includes a counterweight disposed on the blade and located on a side offset from the rotation axis of the blade.
[0011] In some embodiments, the counterweight is a rib protruding from the blade, and the rib extends in a direction parallel to the rotation axis.
[0012] In some embodiments, the return member includes a first magnetic attraction part and a second magnetic attraction part that cooperate with each other. The first magnetic attraction part is provided with the blade and is disposed off the rotation axis of the blade. The second magnetic attraction part is disposed on the stop member.
[0013] In some embodiments, the blade has a cutting state, the cutting edge of the blade in the cutting state is located on the side of the blade away from the connecting portion, and the blade in the cutting state is spaced apart from the stop member to form a moving space.
[0014] When the workpiece is cut, the cutting tool described above will rotate under the action of the return member and rotate to the return state where it is stopped by the stop member. This ensures that the cutting edge of the cutting tool is at least partially contained within the installation space defined by the connecting part and the two mounting arms, minimizing the possibility of the cutting tool being exposed outside the installation space. This avoids the cutting edge from scratching the operator and reduces the safety hazard. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of the cutting tool provided in the embodiments of this application.
[0016] Figure 2 yes Figure 1 The diagram shows the exploded structure of the cutting tool.
[0017] Figure 3 yes Figure 2 The diagram shows a three-dimensional structure of the insert in a cutting tool.
[0018] Figure 4 yes Figure 1 The diagram shows a cross-sectional view of the cutting tool along the AA direction in the cutting state.
[0019] Figure 5 yes Figure 4 The image shows a magnified view of the cutting tool at point B.
[0020] Figure 6 yes Figure 1 The diagram shows a cross-sectional view of the cutting tool along the AA direction.
[0021] Explanation of main component symbols
[0022] Cutting tool 100
[0023] 10 knife handles
[0024] Via 11
[0025] Knife Holder 20
[0026] Mounting arm 21
[0027] Inner wall 211
[0028] First outer wall 212
[0029] Second outer wall 213
[0030] End wall 214
[0031] Connecting part 22
[0032] Installation space 23
[0033] Blade 30
[0034] Cutting edge 31
[0035] Shaft 32
[0036] Stop part 40
[0037] Baffle 41
[0038] Interval 42
[0039] Return piece 50
[0040] Counterweight 51
[0041] First magnetic part 52
[0042] Second magnetic part 53
[0043] Hook 60
[0044] Hanging hole 61 Detailed Implementation
[0045] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0046] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.
[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0048] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.
[0049] Please see Figure 1 This application provides a cutting tool 100 for cutting a workpiece (not shown). The cutting tool 100 includes a tool holder 10, a tool post 20, a cutting insert 30, a stop member 40, and a return member 50.
[0050] Please see also Figure 2 and Figure 3A tool holder 20 is located at one end of the tool handle 10. The tool holder 20 includes two mounting arms 21 and a connecting portion 22. The two mounting arms 21 are opposite to each other and spaced apart. The connecting portion 22 is located on the same side of the two mounting arms 21. The connecting portion 22 connects between the two mounting arms 21, and together with the two mounting arms 21, the connecting portion 22 defines a mounting space 23. A cutting blade 30 is mounted in the mounting space 23 and is rotatably disposed between the two mounting arms 21. The cutting blade 30 has a cutting edge 31. A stop member 40 is provided on at least one of the mounting arms 21 and is located in the rotation path of the cutting blade 30 to stop the cutting blade 30. A return member 50 is provided on at least one of the stop member 40 and the cutting blade 30. The return member 50 is used to rotate the cutting blade 30 to a return state that stops the cutting blade 30, so that the cutting edge 31 of the cutting blade 30 is at least partially received within the mounting space 23.
[0051] When the workpiece is cut, the cutting tool 100 described above rotates under the action of the return member 50 and rotates to the return state where it is stopped by the stop member 40, so that the cutting edge 31 of the cutting tool 30 is at least partially housed in the mounting space 23 formed by the connecting part 22 and the two mounting arms 21, minimizing the possibility of the cutting tool 30 being exposed outside the mounting space 23, thereby avoiding the cutting edge 31 from scratching the operator and reducing the safety hazard.
[0052] In this embodiment, there are two stop members 40, and the two stop members 40 are respectively provided on the side of the two mounting arms 21 that are close to each other. In other embodiments, there may be one stop member 40, and the one stop member 40 is provided on one of the mounting arms 21.
[0053] In some embodiments, a through hole 11 is provided at the end of the tool holder 10 away from the tool post 20. The through hole 11 can be circular, oval, square, or other shaped holes. In this way, by providing the through hole 11, the cutting tool 100 can be easily hung.
[0054] Please see Figure 4 and Figure 5In some embodiments, each mounting arm 21 has an inner wall 211 located within the mounting space 23, and each end of the blade 30 has a pivot 32 connected to the inner wall 211. The mounting arm 21 has a first outer wall 212 and a second outer wall 213, which are arranged opposite to each other and located on opposite sides of the pivot 32. The inner wall 211 is connected between the first outer wall 212 and the second outer wall 213. When the blade 30 is in the returned position, the cutting edge 31 is located between the first outer wall 212 and the second outer wall 213. Specifically, the cutting edge 31 may be partially or completely located between the first outer wall 212 and the second outer wall 213. When the cutting edge 31 is partially or completely located between the first outer wall 212 and the second outer wall 213, when the user observes from the arrangement direction of the two mounting arms 21, the cutting edge 31 will not protrude from the first outer wall 212 and the second outer wall 213, or a small portion of it will protrude from the first outer wall 212 or the second outer wall 213. If the cutting edge 31 protrudes slightly from the first outer wall 212 or the second outer wall 213, the user can still be blocked by the first outer wall 212 and the second outer wall 213, reducing or avoiding contact between the user and most of the cutting edge 31, and basically not causing harm to the human body. By positioning the cutting edge 31 in its return state between the first outer wall 212 and the second outer wall 213, in the non-cutting state, the first outer wall 212 and the second outer wall 213 can act as a protection to prevent the user's hand from touching the cutting edge 31 from two directions, thus avoiding the cutting edge 31 from scratching the operator.
[0055] Please see Figure 2 and Figure 5 In some embodiments, the mounting arm 21 has an end wall 214 facing away from the connecting portion 22, which is connected to the first outer wall 212 and the second outer wall 213. The stop member 40 can be a generally block-shaped structure, located on the inner wall 211, between the blade 30 and the connecting portion 22. The cutting edge 31 of the blade 30 in the returned state is also located between the stop member 40 and the end wall 214. Specifically, when the user observes from the arrangement direction of the two mounting arms 21, the cutting edge 31 will not protrude from the end wall 214, or will only protrude slightly from it. As mentioned above, if the cutting edge 31 protrudes slightly from the end wall 214, the user can still be blocked by the end wall 214, reducing or avoiding contact between the user and most of the cutting edge 31, thus basically preventing harm to the human body. In this way, the end wall 214 can protect the bottom of the cutting tool 100, reducing the possibility of the user touching the cutting edge 31. In some embodiments, the connecting portion 22 and the mounting arms 21 are an integral structure. In some embodiments, the connecting portion 22 and the two mounting arms 21 may also be separate structures.
[0056] Please see Figure 2 and Figure 5In some embodiments, the blade 30 is an arc-shaped structure recessed away from the connecting portion 22. The stop member 40 has a baffle 41 on the side facing the first outer wall 212. The baffle 41 is used to stop the blade 30. The baffle 41 is inclined relative to the first outer wall 212, and the distance between the baffle 41 and the first outer wall 212 gradually increases from the connecting portion 22 towards the end wall 214. By setting the baffle 41 as an inclined structure, when the arc-shaped blade 30 rotates to a preset angle, the two ends of the baffle 41 can stop the blade 30 at two positions on its inner arc. The baffle 41 can be approximated as the chord of an arc, allowing the blade 30 to be smoothly stopped.
[0057] Please see Figure 5 In some embodiments, the stop member 40 is positioned adjacent to the second outer wall 213 relative to the first outer wall 212. It is understood that the minimum distance between the stop wall 41 and the first outer wall 212 is greater than the minimum distance between the stop wall 41 and the second outer wall 213. This allows the blade 30 to retract more into the mounting space 23, thereby reducing the exposure of the cutting edge 31 of the blade 30.
[0058] Please see Figure 5 and Figure 6 In some embodiments, the baffle 41 and the first outer wall 212 have a first inclination angle, denoted as α, which ranges from 10° to 65°. Specifically, α can be 10°, 20°, 30°, 40°, 50°, 60°, or 65°. When the blade 30 rotates to the aforementioned angle after cutting, the baffle 41 stops the blade 30. At this time, when the user observes from the arrangement direction of the two mounting arms 21, the cutting edge 31 will not protrude significantly from the first outer wall 212 and the second outer wall 213, nor from the end wall 214. Alternatively, the user can be largely blocked by the first outer wall 212 and the second outer wall 213, as well as by the end wall 214, reducing or preventing contact between the cutting edge 31 and the human body. The cutting tool 100 will not cause significant harm to the human body, and can maximize the prevention of the user's hand from touching the cutting edge 31, thus avoiding the cutting edge 31 from scratching the operator.
[0059] Please see Figure 2 In some embodiments, the return member 50 includes a counterweight 51 disposed on the blade 30, and the counterweight 51 is offset from the rotation axis L of the blade 30 on one side. Specifically, the counterweight 51 is disposed on the side of the blade 30 facing the connecting portion 22. By providing the counterweight 51, after cutting, the blade 30 can rotate under the gravity of the counterweight 51 and return to a return state where it is stopped by the stop member 40. This allows the cutting edge 31 of the blade 30 to be at least partially housed within the mounting space 23. Under the gravity of the counterweight 51, the blade 30 stops with the stop member 40, thereby forming a relatively stable return state.
[0060] In some embodiments, the counterweight 51 is a protruding rib on the blade 30, extending in a direction parallel to the rotation axis L. This ensures that the force on the blade 30 is evenly distributed during rotation, resulting in smoother rotation. In some embodiments, the counterweight 51 and the rib are an integral structure. In some embodiments, the counterweight 51 and the rib are separate structures. Specifically, the rib is strip-shaped. It can be understood that in other embodiments, the counterweight 51 is block-shaped.
[0061] In some embodiments, the return member 50 includes a first magnetic attraction part 52 and a second magnetic attraction part 53 that cooperate with each other. The first magnetic attraction part 52 is disposed on the blade 30 and is offset from the rotation axis L of the blade 30. The second magnetic attraction part 53 is disposed on the stop member 40. Specifically, the first magnetic attraction part 52 is disposed within the stop member 40. Both the first magnetic attraction part 52 and the counterweight part 51 are disposed on the side of the blade 30 facing the connecting part 22, and are located at opposite ends of the blade 30. Specifically, both the first magnetic attraction part 52 and the second magnetic attraction part 53 can be flattened round magnets. Each of the two stop members 40 has a second magnetic attraction part 53, and there are two first magnetic attraction parts 52, each corresponding to a second magnetic attraction part 53 on one of the two stop members 40. By providing a first magnetic attraction part 52 and a second magnetic attraction part 53, after cutting, the blade 30 will rotate under the attraction of the second magnetic attraction part 53 and rotate to the return state where it is blocked by the stop member 40, so that the cutting edge 31 of the blade 30 is at least partially housed in the installation space 23.
[0062] In some implementations, such as Figure 5 As shown, the insert 30 is in a cutting state. In this state, the cutting edge 31 of the insert 30 is located on the side of the insert 30 away from the connecting portion 22. A gap 42 exists between the insert 30 in the cutting state and the stop member 40 to create a space for movement. By maintaining a gap 42 between the insert 30 in the cutting state and the stop member 40, sufficient space is ensured for the insert 30 to rotate. During cutting, the insert 30 can flexibly adjust its rotation angle, adapting to the surface characteristics of the workpiece.
[0063] In some embodiments, the cutting tool 100 further includes a hook 60, which is disposed on the connecting portion 22 of the tool holder 20, and has a hanging hole 61. Thus, by providing the hanging hole 61, the cutting tool 100 can be conveniently hung.
[0064] The implementation process of the cutting tool 100 provided in this application embodiment is as follows:
[0065] When cutting a workpiece, the cutting tool 30 will be subjected to the force of the workpiece from... Figure 6The state of rotation relative to the tool holder 20 is as follows: Figure 5 In the cutting state, the cutting edge 31 of the blade 30 is located on the side of the blade 30 away from the connecting part 22 and cuts the workpiece; after the workpiece is cut, the blade 30 will rotate under the magnetic attraction of the first magnetic attraction part 52 and the second magnetic attraction part 53 and the gravity of the counterweight part 51 until it stops against the stop member 40 (e.g. Figure 6 (Returning to its original position) so that the cutting edge 31 of the blade 30 is at least partially housed within the mounting space 23, thereby preventing the cutting edge 31 from scratching the operator.
[0066] The cutting tool 100 of this application can cut burrs or oversized workpieces into good products; it uses magnetic adsorption for return operation without injuring hands, improving safety; the cutting depth can be fixed and adjusted by re-sharpening the cutting edge to control the cutting depth; the cutting tool 100 is easy to operate and is fast and efficient during operation; it improves process yield and reduces production costs; the blade 30 can be replaced when worn.
[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.
Claims
1. A cutting tool, characterized in that, include: knife handle; A tool holder is provided at one end of the tool handle. The tool holder includes a connecting part and two mounting arms. The two mounting arms are arranged at intervals relative to each other. The connecting part is located on the same side of the two mounting arms and is connected between the two mounting arms. The connecting part and the two mounting arms together define an installation space. A blade is installed in the mounting space, the blade is rotatably disposed between the two mounting arms, and the blade has a cutting edge; A stop member is provided on at least one of the mounting arms, the stop member being located in the rotation path of the blade to stop the blade; as well as A return member is provided in at least one of the stop member and the blade, the return member being used to rotate the blade to a return state that blocks the stop member, so that the cutting edge of the blade is at least partially received within the mounting space.
2. The cutting tool as described in claim 1, characterized in that, The mounting arm has an inner wall located within the mounting space. The blade has a pivot connected to the inner wall. The mounting arm has a first outer wall and a second outer wall, which are located on opposite sides of the pivot. The inner wall is connected between the first outer wall and the second outer wall. The cutting edge of the blade in the return state is located between the first outer wall and the second outer wall.
3. The cutting tool as described in claim 2, characterized in that, The mounting arm has an end wall facing away from the connecting portion, the end wall being connected to the first outer wall and the second outer wall, the stop member being disposed on the inner wall, the stop member being located between the blade and the connecting portion, and the cutting edge of the blade in the return state being located between the stop member and the end wall.
4. The cutting tool as described in claim 3, characterized in that, The blade is an arc-shaped structure recessed away from the connecting part. The stop member has a baffle on the side facing the first outer wall. The baffle is used to stop the blade. The baffle is inclined relative to the first outer wall. The distance between the baffle and the first outer wall increases from the connecting part toward the end wall.
5. The cutting tool as described in claim 3, characterized in that, The stop member is disposed adjacent to the second outer wall relative to the first outer wall.
6. The cutting tool as described in claim 4, characterized in that, The baffle and the first outer wall have a first inclination angle, the magnitude of which is a, where the value of a ranges from 10° to 65°.
7. The cutting tool according to any one of claims 1 to 6, characterized in that, The return component includes a counterweight, which is disposed on the blade and located on a side offset from the rotation axis of the blade.
8. The cutting tool as described in claim 7, characterized in that, The counterweight is a rib protruding from the blade, and the rib extends in a direction parallel to the rotation axis.
9. The cutting tool according to any one of claims 1 to 6, characterized in that, The return component includes a first magnetic attraction part and a second magnetic attraction part that cooperate with each other. The first magnetic attraction part is disposed on the blade and is offset from the rotation axis of the blade. The second magnetic attraction part is disposed on the stop component.
10. The cutting tool according to any one of claims 1 to 6, characterized in that, The blade is in a cutting state, and the cutting edge of the blade in the cutting state is located on the side of the blade away from the connecting part. The blade in the cutting state is spaced apart from the stop member to form a moving space.