Multi-edge turning tool for heavy metal workpiece machining

Abstract

The utility model discloses a kind of multi-edge turning tool for heavy metal workpiece processing, including tool bar and tool head, tool head is cuboid shape, tool head is equipped with tool head center through-hole, the center line of tool head center through-hole is perpendicular to two tool head vertical axis surfaces and is mutually parallel with four tool head horizontal axis surfaces, the center position of two tool head vertical axis surfaces is equipped with mounting counterbore respectively, four edges of each tool head vertical axis surface is equipped with one cutting edge respectively, the front end of tool bar is equipped with tool head mounting groove, tool head is installed in tool head mounting groove, the screw rod of connecting screw passes through one mounting counterbore and tool head center through-hole and is connected with the mounting screw hole on tool bar.The utility model passes through design eight cutting edges on tool head, can significantly improve the service life of tool head and tool, by design mutually through and symmetrical mounting counterbore, to be able to realize the quick replacement of any one cutting edge in eight cutting edges as working cutting edge, convenient operation.

Description

Technical Field

[0001] This utility model relates to a turning tool, and more particularly to a multi-edge turning tool for machining heavy metal workpieces. Background Technology

[0002] Machining heavy metal workpieces presents significant challenges due to its high difficulty level, poor cutting performance, and susceptibility to chilling, which exacerbates tool wear and reduces tool life. For instance, when machining heavy titanium workpieces, turning tools are subjected to greater impact forces, causing the cutting edges to wear and fail more easily, resulting in a sharp decline in the lifespan of both the tool tip and the overall tooling.

[0003] Traditional turning tools used for machining heavy metal workpieces are mostly welded and hand-ground tools. Their cutting edges typically have only one cutting edge, requiring replacement or re-grinding after each edge is used, thus reducing the lifespan of the cutting edge and the entire tool. Furthermore, traditional turning tools lack proper chip-breaking grooves, making it difficult to break up metal chips. Longer chips can entangle the cutting edge, reducing turning efficiency and accelerating edge wear, further shortening the cutting edge's lifespan. Additionally, the lack of proper water spray holes at the tip of the tool shank hinders efficient heat dissipation during turning, also reducing the tool's lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a multi-edge turning tool with eight cutting edges for machining heavy metal workpieces in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions: A multi-edge turning tool for machining heavy metal workpieces includes a tool holder and a cutting head. The cutting head is mounted on the front end of the tool holder and is cubic in shape. The cutting head has a central through hole, the center line of which is perpendicular to two opposite surfaces of the cutting head, with these two opposite surfaces serving as the cutting head's vertical axis surfaces. The other four surfaces of the cutting head are parallel to the center line of the central through hole, with these four surfaces serving as the cutting head's horizontal axis surfaces. A countersunk hole is provided at the center of each of the two vertical axis surfaces, and the central through hole penetrates to the center of the bottom of the countersunk hole. Each of the four sides of each vertical axis surface has a cutting edge. The front end of the tool holder has a cutting head mounting groove, which has three perpendicular planar groove walls: a first planar groove wall, a second planar groove wall, and a third planar groove wall. The cutting head is mounted in the cutting head mounting groove. A connecting screw passes through one of the countersunk holes and the central through hole and connects to a mounting screw hole on the tool holder, with the screw head located in the other countersunk hole.

[0006] Preferably, in order to facilitate the guidance and cutting of metal chips generated during the operation of each cutting edge, each cutting head flat shaft surface is provided with two chip guide grooves, and the two chip guide grooves are independent and centrally symmetrically distributed around the center point of the corresponding cutting head flat shaft surface. One side of each chip guide groove is a corresponding cutting edge, and the other side extends to the corresponding cutting head flat shaft surface to form a chip breaking step. The side of the chip guide groove that serves as the cutting edge is lower than the corresponding cutting head flat shaft surface.

[0007] Preferably, in order to facilitate quick installation of the cutter head and easy replacement of the cutting edge in different positions as the working cutting edge, the first planar groove wall and the second planar groove wall are located in front of the third planar groove wall, and the mounting screw hole is provided in the first planar groove wall.

[0008] Preferably, in order to facilitate double-sided water spray cooling of the working cutting edge, the front end of the tool holder is provided with water spray steps near the first planar groove wall and the second planar groove wall, and the water spray steps are provided with water spray holes.

[0009] Preferably, in order to facilitate reliable installation of the cutter head, a clearance groove is provided at the connection between the second planar groove wall and the third planar groove wall.

[0010] The beneficial effects of this utility model are as follows: This invention significantly improves the service life of the cutting head and tool by designing eight cutting edges on the cutting head. The interconnected and symmetrical mounting countersunk holes allow for quick replacement of any one of the eight cutting edges as the working cutting edge, facilitating operation. Eight chip guide grooves, each corresponding to a chip breaking step, guide and cut off metal chips generated during operation, preventing excessively long chips from entangled in the cutting head, thus improving turning efficiency, reducing cutting edge wear, and extending cutting edge life. Water spray holes on both sides of the working cutting edge allow for double-sided water spraying during turning, improving heat dissipation efficiency and further extending the cutting head's service life. Attached Figure Description

[0011] Figure 1 This is one of the perspective views of the cutting head of the multi-edge turning tool for machining heavy metal workpieces according to this utility model; Figure 2 This is the second perspective view of the cutting head of the multi-edge turning tool for machining heavy metal workpieces according to this utility model, with the perspective view being... Figure 1 The same, and the internal through-hole structure is shown with dashed lines; Figure 3 This is a perspective view of the tool holder of the multi-edge turning tool for machining heavy metal workpieces according to the present invention; Figure 4This is a perspective view of the multi-edge turning tool for machining heavy metal workpieces according to the present invention, and... Figure 3 Same perspective; Figure 5 This is an enlarged perspective view of the front end structure of the multi-edge turning tool for machining heavy metal workpieces according to this utility model; Figure 6 This is a front view of the multi-edge turning tool for machining heavy metal workpieces according to this utility model; Figure 7 This is a schematic diagram of the structure of the multi-edge turning tool for machining heavy metal workpieces described in this utility model during operation. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-6 As shown, the multi-edge turning tool for machining heavy metal workpieces according to this utility model includes a tool holder 17 and a cutting head 1. The cutting head 1 is mounted on the front end of the tool holder 17 and is cubic in shape. The cutting head 1 has a central through hole 8. The center line of the central through hole 8 is perpendicular to two opposite surfaces of the cutting head 1, and these two opposite surfaces are the perpendicular axis surfaces 4 of the cutting head. The other four surfaces of the cutting head 1 are parallel to the center line of the central through hole 8, and these four surfaces are the parallel axis surfaces 2 of the cutting head. The center positions of the two perpendicular axis surfaces 4 of the cutting head are respectively provided with mounting countersunk holes 6. The central through hole 8 penetrates the center of the bottom of the mounting countersunk hole 6. Each cutting edge 7 is provided on the four sides of the vertical axis surface 4 of each cutting head. The front end of the cutting head shank 17 is provided with a cutting head mounting groove 9. The cutting head mounting groove 9 has a first plane groove wall 13, a second plane groove wall 14 and a third plane groove wall 15 that are perpendicular to each other. The cutting head 1 is installed in the cutting head mounting groove 9. The screw of the connecting screw (not shown in the figure, but easy to understand) passes through a mounting countersunk hole 6 and the central through hole 8 of the cutting head and is connected to the mounting screw hole 12 on the cutting head shank 17. The nut of the connecting screw is located in another mounting countersunk hole 6.

[0013] like Figures 1-6 As shown, this utility model also discloses the following more optimized specific structures: To facilitate the guidance and cutting of metal chips generated during the operation of each cutting edge 7, each cutting head flat shaft surface 2 is provided with two chip guide grooves 3. The two chip guide grooves 3 are independent and are centrally symmetrically distributed around the center point of the corresponding cutting head flat shaft surface 2. One side of each chip guide groove 3 corresponds to one cutting edge 7, and the other side extends to the corresponding cutting head flat shaft surface 2 to form a chip breaking step 5. The side of the chip guide groove 3 that serves as the cutting edge 7 is lower than the corresponding cutting head flat shaft surface 2.

[0014] To facilitate quick installation of the cutter head 1 and easy replacement of the cutting edge 7 at different positions as the working cutting edge, the first planar groove wall 13 and the second planar groove wall 14 are located in front of the third planar groove wall 15, and the mounting screw hole 12 is provided in the first planar groove wall 13.

[0015] To facilitate double-sided water cooling of the working cutting edge, the front end of the tool holder 17 is provided with water spraying steps 10 near the first plane groove wall 13 and the second plane groove wall 14, and water spraying holes 11 are provided on the water spraying steps 10.

[0016] To facilitate reliable installation of the cutter head 1, a clearance groove 16 is provided at the connection between the second plane groove wall 14 and the third plane groove wall 15.

[0017] Combination Figures 1-7 In application, the tool holder 17 is mounted on a machine tool (not shown in the figure), and the heavy metal workpiece 18 is mounted on the machine tool and can rotate. One of the cutting edges 7 on the tool head 1 is used as the working cutting edge. The machine tool is started, and the heavy metal workpiece 18 rotates continuously at high speed. The machine tool drives the heavy metal workpiece 18 and the tool head 1 to move in a straight line relative to each other (the heavy metal workpiece 18 can be driven to move in a straight line by the machine tool, or the tool can be driven to move in a straight line, depending on the structure of the machine tool). The working cutting edge cuts the heavy metal workpiece 18 to gradually shape it. The metal chips generated by cutting are guided by the chip guide groove 3 to the chip breaking step 5 to curl and break, avoiding the metal chips from entangled with the tool head 1. The broken metal chips can also quickly carry away the processing heat. At the same time, the cooling water in the cooling water pipe connected to the rear end of the tool holder 17 is sprayed out from the water spray hole 11 through the channel in the tool holder 17 to spray water on both sides of the working cutting edge to achieve better cooling and temperature reduction, better protect the cutting edge 7 and extend its service life.

[0018] When a cutting edge 7 becomes dull after a period of use, it needs to be replaced with another cutting edge 7 as the working cutting edge. To do this, simply loosen the connecting screw, rotate the cutter head 1 90° around the center line of the cutter head's central through hole 8, and then reattach the cutter head 1 to the cutter shank 17 using the connecting screw. This allows the next cutting edge 7 to be used as the working cutting edge. Repeat this process three times to use all four cutting edges 7 on the four sides of the vertical axis surface 4 of one cutter head. The next time you need to replace a cutting edge 7, rotate the cutter head 1 180° in the direction of the center line of the cutter head's central through hole 8, and use the four cutting edges 7 on the four sides of the vertical axis surface 4 of another cutter head as working cutting edges in sequence, thus achieving the use of all eight cutting edges 7.

[0019] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A multi-edge turning tool for machining heavy metal workpieces, comprising a tool holder and a cutting head, wherein the cutting head is mounted on the front end of the tool holder and is cubic in shape, characterized in that: The cutting head has a central through hole, the center line of which is perpendicular to two opposite surfaces of the cutting head and serves as the vertical axis surface of the cutting head. The other four surfaces of the cutting head are parallel to the center line of the central through hole and serve as the horizontal axis surface of the cutting head. A countersunk hole is provided at the center of each of the two vertical axis surfaces, and the central through hole penetrates the center of the bottom of the countersunk hole. Each of the four sides of each vertical axis surface has a cutting edge. The front end of the cutting head shank has a cutting head mounting groove, which has three perpendicular planar groove walls: a first planar groove wall, a second planar groove wall, and a third planar groove wall. The cutting head is installed in the cutting head mounting groove. The screw of the connecting screw passes through one of the countersunk holes and the central through hole and connects to the mounting screw hole on the cutting head shank, with the screw cap located in the other countersunk hole.

2. The multi-edge turning tool for machining heavy metal workpieces according to claim 1, characterized in that: Each of the cutting head flat shaft surfaces is provided with two chip guide grooves, and the two chip guide grooves are independent and centrally symmetrically distributed around the center point of the corresponding cutting head flat shaft surface. One side of each chip guide groove is a corresponding cutting edge, and the other side extends to the corresponding cutting head flat shaft surface to form a chip breaking step. The side of the chip guide groove that serves as the cutting edge is lower than the corresponding cutting head flat shaft surface.

3. The multi-edge turning tool for machining heavy metal workpieces according to claim 1 or 2, characterized in that: The first planar groove wall and the second planar groove wall are located in front of the third planar groove wall, and the mounting screw hole is provided in the first planar groove wall.

4. The multi-edge turning tool for machining heavy metal workpieces according to claim 3, characterized in that: The front end of the cutter bar is provided with water spraying steps near the first planar groove wall and the second planar groove wall, respectively, and the water spraying steps are provided with water spraying holes.

5. The multi-edge turning tool for machining heavy metal workpieces according to claim 3, characterized in that: The connection between the second planar groove wall and the third planar groove wall is provided with a clearance groove.

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