A forming tool for processing waterproof ring groove

Abstract

The utility model relates to the technical field of cutting tools, and discloses a forming tool for processing waterproof grooves, including a coaxially distributed handle and a cutter head, and the cutter head is arranged at one end of the handle, the cutter head includes a cutter body, one end of the cutter body is connected to the handle, and the other end is provided with a blade protruding from the outer circumferential surface of the cutter body, the radial dimension of the blade gradually increases along the axial direction, and the front end of the blade is provided with a rounded corner. The cutter head and the handle can rotate synchronously, the radial dimension of the blade gradually increases along the axial direction, and the inner concave surface of the waterproof groove can be cut out, and the front end of the blade is provided with a rounded corner, which can effectively avoid the chipping of the blade tip and obtain a good processing surface; compared with the existing discharge machining method, the use of the forming tool can reduce the processing cost of the waterproof groove, improve its processing efficiency, and obtain a good processing surface.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, in particular to a forming tool for processing waterproof ring grooves. Background Art

[0002] The press-type waterproof ring is a common waterproof seal, usually made of rubber, silicone and other materials. Its main function is to form a seal between two objects to prevent moisture, dust and other substances from entering, especially in high-precision multi-cavity plastic molds, most of which contain press-type waterproof ring shapes.

[0003] Waterproof rings are usually installed in waterproof ring grooves (such as Figure 6 As shown in the figure, in the existing mold, the waterproof ring groove is generally processed by traditional EDM ("Electrical Discharge Machining", i.e., electric spark machining). However, processing the waterproof ring groove by this method requires a lot of time, occupies the processing machine tool for too long, the surface roughness is not good, and a polishing process needs to be added later to process the surface, which greatly wastes machine processing time and labor time. Therefore, it is urgent to propose a molding tool for processing this part. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a forming tool for processing a waterproof ring groove. The tool head is driven to rotate by the tool handle. Since the radial size of the blade gradually increases along the axial direction, the inner concave surface of the waterproof ring groove can be cut out, thereby reducing the processing cost of the waterproof ring groove and improving its processing efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A forming tool for processing waterproof ring grooves, comprising a coaxially distributed tool handle and a tool head, wherein the tool head is arranged at one end of the tool handle, and the tool head comprises a tool body, one end of which is connected to the tool handle, and the other end of which is provided with a blade protruding from the outer circumferential surface of the tool body, wherein the radial dimension of the blade gradually increases along the axial direction, and a rounded corner is arranged on the outer side of the front end of the blade.

[0007] Optionally, four blades are provided, and the four blades are distributed in a circular array around the axis of the blade body.

[0008] Optionally, a chip removal groove is provided between two adjacent cutting edges.

[0009] Optionally, four chip removal grooves are provided, and the chip removal grooves adopt a spiral structure.

[0010] Optionally, the front end of the blade is also provided with an inclined surface inclined toward the chip removal groove.

[0011] Optionally, an air avoidance surface for avoiding interference is provided at one end of the tool handle close to the tool head.

[0012] Optionally, the air avoidance surface adopts a conical surface structure, and the cone angle of the air avoidance surface is 90 degrees.

[0013] Optionally, the diameter of the knife handle is 6 mm, the diameter of the knife body is 1.3 mm, and the radius of the fillet is 0.3 mm.

[0014] Beneficial Effects

[0015] (1) The cutter head and the cutter handle in the utility model can rotate synchronously, and the radial dimension of the blade gradually increases along the axial direction, so that the inner concave surface of the waterproof ring groove can be cut out, and the outer side of the front end of the blade is provided with a rounded corner, which can effectively avoid the chipping of the blade tip and obtain a good processing surface; compared with the existing discharge machining method, the use of this forming tool can reduce the processing cost of the waterproof ring groove, improve its processing efficiency, and obtain a good processing surface.

[0016] (2) In the present invention, the front end of the blade is also provided with a bevel, so that the front end of the blade has a very narrow edge, which greatly improves the strength, wear resistance and life of the blade.

[0017] (3) The cutter head in the utility model adopts a four-edge structure, that is, the cutter head has four cutting edges, and the handle can perform four cuts by rotating one circle, which greatly improves the cutting efficiency and ensures the smoothness of the processed surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a side view structural schematic diagram of the utility model;

[0020] Figure 3 It is a main structural schematic diagram of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the cutter head of the utility model;

[0022] Figure 5 It is a side view structural schematic diagram of the cutter head of the utility model;

[0023] Figure 6 It is a schematic diagram of the waterproof groove structure on the mold body;

[0024] Among them, 1. tool handle; 2. tool head; 21. tool body; 22. blade; 23. fillet; 24. bevel; 25. chip groove; 3. air avoidance surface; 4. mold body; 5. waterproof groove. DETAILED DESCRIPTION

[0025] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0026] like Figure 1-Figure 6 As shown, a forming tool for waterproof ring groove processing includes a coaxially distributed tool handle 1 and a tool head 2, the tool head 2 is fixedly connected to one end of the tool handle 1, and an end of the tool handle 1 close to the tool head 2 is provided with a clearance surface 3 for avoiding interference between the tool handle 1 and the mold body 4.

[0027] As mentioned above, the cutter head 2 includes a cutter body 21, one end of which is connected to the handle 1, and the other end is provided with a blade 22 protruding from the outer circumferential surface of the cutter body 21, the radial dimension of the blade 22 gradually increases along the axial direction, and a rounded corner 23 is provided on the outer side of the front end of the blade 22.

[0028] The clamping diameter of the tool handle 1 is designed to be a commonly used large size, which can adapt to the commonly used heat-shrink clamping tool handle while ensuring the stability of the tool during high-speed cutting; the cutter head 2 and the tool handle 1 can rotate synchronously, and the radial size of its blade 22 gradually increases along the axial direction, so that the inner concave surface of the waterproof groove 5 (i.e., the waterproof ring groove) can be cut at the corresponding position of the mold body 4, and a fillet 23 is provided on the outer side of the front end of the blade 22 (here the end of the blade 22 opposite to the tool handle 1 is set as the front end), which can effectively avoid the chipping of the blade tip and obtain a good processing surface; compared with the existing discharge machining method, the use of this molding tool can reduce the processing cost of the waterproof ring groove, improve its processing efficiency, and obtain a good processing surface.

[0029] The cutter head 2 is provided with four blades 22, and the four blades 22 are distributed in a circular array around the axis of the cutter body 21. The cutter head 2 adopts a four-blade structure, that is, the cutter head 2 has four blades 22, and the handle 1 can perform four cuts when it rotates one circle, ensuring the smoothness of the machined surface. Compared with the two-blade or three-blade structure, the four-blade structure can greatly improve the efficiency of the cutting process.

[0030] Among them, the cutter head 2 uses titanium carbide nitride coating (TICN), which greatly improves the hardness and wear resistance of the tool, and obtains better cutting performance and longer tool life.

[0031] The clearance surface 3 adopts a conical surface structure, that is, the radial dimension of the clearance surface 3 gradually decreases along the axial direction toward the cutter head 2, and the cone angle of the clearance surface 3 is 90 degrees.

[0032] The avoidance surface 3 is the avoidance position on the tool, and the tool mainly has the following functions:

[0033] (1) Prevent interference. During the processing, it can prevent the tool from colliding and interfering with the workpiece or other parts such as the fixture, ensuring the smooth progress of the processing;

[0034] (2) Providing operating space to facilitate flexible movement and operation of the tool in a specific environment;

[0035] (3) Reduce wear and reduce the chance of abnormal tool wear due to unnecessary contact;

[0036] (4) Improving machining accuracy: By avoiding unnecessary interference factors, it helps maintain machining accuracy and stability, thereby improving machining accuracy.

[0037] Furthermore, a chip groove 25 is provided between two adjacent blades 22. Since the cutter head 2 has four blades 22, the forming tool also has four chip grooves 25, and the chip grooves 25 have a spiral structure, that is, the chip grooves 25 are distributed in a spiral shape around the axis of the cutter body 21.

[0038] As the tool handle 1 drives the tool head 2 to rotate, the waste cut off from the mold body 4 by the blade 22 can be discharged along the chip groove 25 to prevent the tool from overheating. The chip groove 25 of the tool is designed to be a large-angle spiral, which can ensure timely chip removal during the processing to the greatest extent, avoid squeezing, chip breaking and tool sticking, and obtain higher processing efficiency and quality.

[0039] Further, the front end of the blade 22 is also provided with an inclined surface 24 inclined to one side of the chip flute 25. By providing the inclined surface 24 at the front end of the blade 22, the front end face of the blade 22 can have a very narrow edge, which greatly improves the strength, wear resistance and life of the cutting edge.

[0040] In addition, the diameter of the blade 21 is 1.3 mm and the length is 4 mm; the axial length of the blade 22 is 2 mm, and the side surfaces of the four blades 22 are all within the same conical surface, the cone angle of the cone is 40 degrees, and the maximum diameter is 2.5 mm; the radius of the fillet 23 is 0.3 mm; the diameter of the handle 1 is 6 mm, and the total length of the handle 1 and the blade head 2 is 30 mm.

[0041] In order to ensure that the press-type waterproof ring can be fixed in its groove, an inner concave surface needs to be opened on its inner side to clamp the waterproof ring therein; and through the molding tool, the inner concave surface of the corresponding waterproof ring groove can be cut out at the corresponding position of the mold body 4; the molding tool has been officially put into use within the company and has successfully completed the mold processing of several key projects. Compared with traditional EDM discharge machining, the efficiency is increased by 500% and the processing cost is reduced by 75%.

[0042] In summary, the molding tool proposed by the utility model uses titanium carbide nitride coating (TICN), which greatly improves the hardness and wear resistance of the tool, and can obtain more superior cutting performance and longer tool life; the cutter head 2 uses a four-edge sharpening method to ensure the smoothness of the machined surface; adding a spiral chip groove 25 can ensure that the tool can quickly remove chips; adding a fillet 23 with a radius of 0.3mm at the head of the blade 22 (outer side of the front end) can effectively avoid chipping of the blade tip and obtain a good machined surface; therefore, the molding tool can improve the processing efficiency and smoothness of the waterproof ring groove part of the plastic mold.

[0043] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0045] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A forming tool for processing waterproof ring grooves, comprising a tool handle (1) and a tool head (2) which are coaxially distributed, wherein the tool head (2) is arranged at one end of the tool handle (1), characterized in that: The cutter head (2) comprises a cutter body (21), one end of the cutter body (21) being connected to the cutter handle (1), and the other end being provided with a cutting edge (22) protruding from an outer circumferential surface of the cutter body (21), the radial dimension of the cutting edge (22) gradually increasing along the axial direction, and a rounded corner (23) being provided on the outer side of the front end of the cutting edge (22).

2. The waterproof groove forming tool according to claim 1, characterized in that: Four blades (22) are provided, and the four blades (22) are distributed in a circular array around the axis of the blade body (21).

3. The waterproof groove forming tool according to claim 2, characterized in that: A chip removal groove (25) is provided between two adjacent blades (22).

4. The waterproof groove forming tool according to claim 3, characterized in that: Four chip removal grooves (25) are provided, and the chip removal grooves (25) adopt a spiral structure.

5. The waterproof groove forming tool according to claim 3, characterized in that: The front end of the blade (22) is also provided with an inclined surface (24) inclined towards the chip removal groove (25).

6. The waterproof groove forming tool according to any one of claims 1 to 5, characterized in that: An end of the knife handle (1) close to the knife head (2) is provided with a clearance surface (3) for avoiding interference.

7. The waterproof groove forming tool according to claim 6, characterized in that: The air avoidance surface (3) adopts a conical surface structure, and the cone angle of the air avoidance surface (3) is 90 degrees.

8. The waterproof groove forming tool according to claim 7, characterized in that: The diameter of the knife handle (1) is 6 mm, the diameter of the knife body (21) is 1.3 mm, and the radius of the fillet (23) is 0.3 mm.

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