Cutting tool for 3D printing product

Abstract

The utility model relates to the field of 3D printing, in particular to a cutting tool for 3D printed products, which comprises a tool bit, a mounting part and a connecting column, the tool bit and the mounting part are fixed into a whole, one end of the connecting column is inserted into a drilling machine and clamped by the drilling machine, and the other end of the connecting column is detachably connected with the mounting part. The drilling machine rotates to drive the tool bit to be aligned with the blocky support for cutting, the support removing efficiency of an operator can be effectively improved, the operator only needs to hold the drilling machine with arms in the cutting process, operation is easy and convenient, and control is convenient; and the tool bit, the connecting column and the mounting part are detachably connected, so that an operator can quickly replace a proper tool bit when facing different block-shaped supports, and the use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing field, concretely is a kind of cutting tool for 3D printing product. BACKGROUND

[0002] In metal 3D printing, especially in the printing process of selective laser melting (SLM) technology, in order to ensure the shape and structural stability of the printed part, support structure is usually needed to be added. After printing is completed, these supports need to be removed. At present, the traditional method for removing block-shaped supports mainly uses a flathead screwdriver to pry. This method has many disadvantages, as follows:

[0003] Firstly, the removal efficiency is low: using a flathead screwdriver to pry block-shaped supports one by one, the operation process is complicated, and a lot of time and manpower are consumed. For printed parts with complex structures, the number of supports is large, and the work of removing the supports becomes extremely difficult, which seriously affects the production efficiency.

[0004] Secondly, it is inconvenient to use and easy to damage the printed part: during the prying process of the flathead screwdriver, it is difficult to accurately control the force and direction under the action of long-time prying, which is easy to scratch the surface of the printed part, and even may damage the structure of the printed part, affecting the quality and performance of the printed part. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a de-supporting cutting tool with high efficiency and convenient to use. The present application can effectively improve the efficiency of the operator in removing the support by means of the drill rotating to drive the cutter head to cut the block-shaped support. During the cutting process, the operator only needs to use the arm to hold the drill, which is simple and convenient to operate and easy to control. The cutter head, connecting column and mounting part are detachably connected, so that the operator can quickly replace the appropriate cutter head when facing different block-shaped supports, which is convenient to use.

[0006] The specific technical scheme adopted by the present application is as follows: a cutting tool for 3D printing product, comprising a cutter head, a mounting part and a connecting column, the cutter head and the mounting part are detachably connected, one end of the connecting column is inserted into the interior of the drill and is clamped by the drill, and the other end of the connecting column is detachably connected with the mounting part.

[0007] Further, the tail part of the cutter head further comprises a threaded stud, an external thread is arranged on the threaded stud, the mounting part is provided with an internal thread, the locking rotation direction of the thread is opposite to the rotation direction of the drill, and the thread cooperation makes the cutter head and the mounting part connected and fixed.

[0008] Preferably, the cutting part of the cutter head is a conical spiral cutting edge.

[0009] Further, the tail part of the cutter head further comprises a clamping surface.

[0010] Further, the middle part of the cutter head is provided with a through pin hole.

[0011] Further, the mounting part further comprises an outer hexagonal nut, which is internally provided with threads, so that the connecting column and the mounting part are threadedly connected.

[0012] Preferably, the fixing device further comprises a base and a support, the support being rotationally connected to the base, and the drill rig and the support being connected through a spherical hinge.

[0013] Further preferably, the fixing device further comprises a lifting column, which is fixed to the base, and the support is rotationally connected to the lifting column.

[0014] Further preferably, the fixing device further comprises an extension frame, one end of the extension frame being rotationally connected to the lifting column, and the other end of the extension frame being rotationally connected to the support.

[0015] Further preferably, the fixing device further comprises a workbench, the tabletop of the workbench being provided with a plurality of T-shaped grooves, and the base is fixed to a corner of the workbench.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] Firstly, the present application can effectively improve the efficiency of the operator in removing the support by means of the drill rig rotating to drive the cutter head to cut the block-shaped support. During the cutting process, the operator only needs to use the arm to hold the drill rig, without the need for long-time hand-held tooling to perform repetitive prying actions, thereby reducing hand fatigue and improving the convenience and stability of the operation.

[0018] Secondly, the present application further provides a fixing device to fix the drill rig, which can be extended, lifted and rotated at multiple angles, thereby improving the convenience of the operator in cutting operation, and the fixing device can offset the reaction force of the metal on the drill rig during the cutting process, thereby further improving the stability of the cutting and reducing hand fatigue. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a perspective view of the overall structure of the drill rig according to the present application;

[0020] Figure 2 FIG. 2 is a perspective view of the drill rig in use according to the present application;

[0021] Figure 3 FIG. 3 is a detailed structural schematic view of the drill rig in use according to the present application;

[0022] Figure 4It is a perspective view of the overall structure of Embodiment 2 of the present application;

[0023] In the figure: 1, tool head; 11, pin hole; 12, stud; 13, occlusal surface; 2, connecting column; 3, mounting portion; 31, outer hexagonal nut; 4, fixing device; 41, workbench; 42, base; 43, lifting column; 44, extension frame; 45, bracket; 100, drilling machine. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments.

[0025] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but only represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0026] Embodiment 1

[0027] Please refer to Figures 1 to 3 The present embodiment is a cutting tool for 3D printed products, which comprises a tool head 1, a connecting column 2 and a mounting portion 3. The tool head 1 and the mounting portion 3 are detachably fixed as a whole. One end of the connecting column 2 is inserted into the inside of a drilling machine 100 and clamped by the drilling machine 100. The other end of the connecting column 2 is detachably connected with the mounting portion 3. The drilling machine 100 is a commonly used electric drill on the market. After installation, the electric drill can automatically clamp the connecting column. The connecting column 2 is connected with the tool head through the mounting portion, so as to rotate the tool head quickly by means of the rotation of the electric drill, quickly split the block-shaped support, and complete the cutting by aligning the tool head with the block-shaped support. Compared with the traditional method of prying with a straight screwdriver, the efficiency of the operator in removing the block-shaped support is effectively improved. During the cutting process, the operator only needs to use the arm to hold the drilling machine 100, which is simple and convenient to operate and easy to control. Automatic operation can also be realized, which reduces the labor intensity and improves the production efficiency. The detachable connection of the connecting column 2 and the mounting portion 3 facilitates the operator to quickly replace the appropriate tool head when facing different block-shaped supports, which is convenient to use.

[0028] Preferably in this embodiment, the tail of the tool head 1 further comprises a threaded stud 12, which is externally threaded, and the mounting portion 3 is internally threaded, the locking rotation direction of the threads being opposite to the rotation direction of the drilling machine 100, and the threaded connection fixes the tool head 1 to the mounting portion 3. The tool head 1 can be detached from the mounting portion 3 by hand or using a wrench, which is convenient for the operator to replace the tool head 1. The threaded connection of the tool head and the mounting portion enables the tool head to be replaced while the connecting column is connected to the drilling machine 100, which further facilitates the operator's use and improves work efficiency.

[0029] In this embodiment, the cutting part of the tool head 1 is conical, and the cutting edge of the tool head 1 is helical. The shape and size of the 3D printed product are not uniform, and the gap for accommodating the block-shaped support is also not uniform. The operator can make the tool quickly insert into the inside of the support when it contacts the block-shaped support, and the cutting force generated by rotation can split the block-shaped support. The conical tool head 1 can concentrate power and improve cutting efficiency; the helical cutting edge of the conical tool head 1 can flexibly adjust the depth of the tip of the tool head 1 into the gap. For block-shaped supports with wider gaps, the tool head 1 penetrates deeper into the gap, and for block-shaped supports with narrower gaps, the tool head 1 penetrates shallower into the gap, thereby adapting to the removal of block-shaped supports of various widths, greatly facilitating the use process of the operator. The helical thread also increases the friction between the tool and the support, preventing slipping during rotation. In this embodiment, tool heads of different diameters can be designed, and tool heads suitable for the size of different product structures can be selected. The sharp and sharp conical tool head and the helical thread design can also reduce scratches on the surface of the printed part and damage to the structure of the printed part. At the same time, the rotary cutting method of the tool can also reduce the impact force on the printed part, further protecting the quality and performance of the printed part.

[0030] Further, the tail of the tool head 1 further comprises an engagement surface 13. When the tool head 1 is installed in or detached from the mounting portion 3, the operator can complete the operation by hand or using a wrench to clamp the engagement surface 13 and rotate it with force. The engagement surface 13 has a larger contact area, making rotation more labor-saving and convenient for the operator to use.

[0031] Further, the middle part of the tool head 1 further comprises a through pin hole 11. In some cases where the threads are too tight or rusty, the thread engagement force is very large, and it is difficult to detach the tool head 1 from the mounting portion 3 using an external hex wrench. At this time, an iron pin or an internal hex wrench is inserted into the pin hole 11 and extended with an arm to use more force, which is convenient for the operator to detach.

[0032] In this embodiment, the mounting portion 3 also includes an outer hex nut 31, which is internally threaded to allow the threaded connection of the connecting column 2 and the mounting portion 3. The outer hex nut not only facilitates the replacement of different specifications of tool bits in different working scenarios to adapt to the support removal needs of different sizes and shapes, but also facilitates the maintenance and maintenance of the tool, prolonging the service life of the tool.

[0033] In this embodiment, the connecting column 2 is preferably a cylinder, which is convenient for connecting with power tools such as a hand drill, and also facilitates disassembly, so that different specifications of tool bits can be replaced in different working scenarios, so that the tool can also be adapted to more models of hand drills, and the applicability is wider. The connecting portion 2 is made of high-strength material to ensure that it can withstand large torque and impact force during use.

[0034] The use process of the embodiment of the application is as follows: first, insert the connecting column 2 of the cutting tool into the power tool such as a hand drill, and the hand drill automatically clamps the connecting column 2 to ensure firm and reliable connection. Secondly, according to the size and shape of the block-shaped support, select the appropriate specification of tool bit 1, and rotate and twist the internal thread of the mounting portion 3 with the internal thread of the mounting portion 3, and then thread the outer hex nut 31 of the mounting portion 3 with the connecting column 2, and the locking rotation direction of the thread should be opposite to the rotation direction of the hand drill, and the installation is completed. Finally, align the tip of the tool bit 1 of the tool with the block-shaped support of the 3D printed product, start the power tool such as a hand drill, and make the tool rotate. During rotation, the tool bit will quickly insert into the block-shaped support, and the cutting force generated by the spiral thread will split the block-shaped support, and then the support is removed from the part by using a tool such as a pliers. Repeat the above steps until all the block-shaped supports are removed.

[0035] The manufacturing requirements of the cutting tool of the application are as follows: the tool bit 1 is the key part of the cutting tool, which needs to have high hardness, high strength and good wear resistance. High-speed steel, hard alloy and other materials can be selected to make the head, which has high hardness and strength, can withstand large cutting force and impact force, and also has good wear resistance, which can ensure the service life of the tool. The connecting column 2 and the mounting portion 3 need to have high strength and toughness to withstand the torque and impact force generated during use, and alloy steel, stainless steel and other materials can be selected to make the connecting portion to ensure firm and reliable connection.

[0036] Embodiment 2

[0037] See Figure 4The embodiment adopts the cutting tool, and the difference is that the embodiment further comprises a fixing device 4, the fixing device 4 comprises a base 42, a lifting column 43, an extension frame 44, a support 45 and a workbench 41, the workbench 41 is distributed with a plurality of T-shaped grooves, the base 42 is fixed to a corner of the workbench 41, the lifting column 43 is fixed on the base 42, one end of the extension frame 44 is rotationally connected with the lifting column 43, the other end of the extension frame 44 is rotationally connected with the support 45, and the drilling machine 100 and the support 45 are connected through a spherical hinge. The T-shaped grooves of the workbench 41 can stably fix the 3D printing product, the lifting column 43 can adjust the height of the drilling machine 100, the extension frame 44 can extend in the horizontal direction, and the spherical hinge enables the drilling machine 100 to cut the block-shaped support of the 3D printing product at various angles.

[0038] It should be understood by those of ordinary skill in the art that the above discussion of any embodiment is merely exemplary and is not intended to suggest the scope of protection of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of one or more embodiments of the present application as described above, which are not provided in details for the sake of simplicity.

[0039] One or more embodiments of the present application are intended to cover all such alternatives, modifications and variations as fall within the broad scope of the present application. Therefore, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of one or more embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A cutting tool for 3D printed products, characterized in that, The utility model relates to a drill head, including cutter head (1), installation part (3) and connecting column (2), cutter head (1) with installation part (3) is detachably connected, connecting column (2) one end inserts inside drilling machine (100) and is held by drilling machine (100), and the other end of connecting column (2) is detachably connected with installation part (3).

2. The cutting tool according to claim 1, characterized in that, The tail of the cutter head (1) further comprises a threaded stud (12) having external threads, and the installation part (3) has internal threads, the locking rotation direction of the threads being opposite to the rotation direction of the drilling machine (100), and the threads cooperate to connect and fix the cutter head (1) and the installation part (3).

3. The cutting tool according to claim 1, characterized in that, The cutting part of the cutter head (1) is a tapered helical cutting edge.

4. The cutting tool according to claim 1, wherein The tail of the cutter head (1) further comprises a clamping surface (13).

5. The cutting tool according to claim 1, wherein, The middle part of the cutter head (1) further comprises a through pin hole (11).

6. The cutting tool according to claim 1, wherein The installation part (3) further comprises an outer hexagonal nut (31) having internal threads, so that the connecting column (2) and the installation part (3) are threadedly connected.

7. The cutting tool according to claim 1, wherein The utility model further comprises a fixing device (4), the fixing device (4) comprising a base (42) and a bracket (45), the bracket (45) being rotatably connected to the base (42), and the drilling machine (100) and the bracket (45) being connected by a spherical hinge.

8. The cutting tool according to claim 7, characterized in that The fixing device (4) further comprises a lifting column (43) fixed to the base (42), and the bracket (45) is rotatably connected to the lifting column (43).

9. The cutting tool according to claim 8, characterized in that, The fixing device (4) further comprises an extension frame (44), one end of the extension frame (44) being rotatably connected to the lifting column (43), and the other end of the extension frame (44) being rotatably connected to the bracket (45).

10. A cutting tool according to any one of claims 7-9, characterised in that The fixing device (4) further comprises a workbench (41), the surface of the workbench (41) being provided with a plurality of T-shaped grooves, and the base (42) being fixed to a corner of the workbench (41).

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