A high-efficiency PCD forming corn milling cutter

Abstract

The utility model discloses a kind of efficient PCD forming corn milling cutter, including blade body, the front end of blade body is provided with tool bit, the surface of tool bit is provided with rear cutting part, multiple rear cutting parts are along the surface of tool bit and are arranged at intervals, the side of each rear cutting part is provided with rear PCD blade, the surface of tool bit front end is provided with front cutting part, the side of the inner wall of each front cutting part is provided with front PCD blade, the surface of tool bit and between front cutting part and rear cutting part are provided with middle cutting part, the side of the inner wall of each middle cutting part is provided with middle PCD blade.The efficient PCD forming corn milling cutter, by separating multiple front PCD blade, middle PCD blade and rear PCD blade into independent small blade edge, compared with traditional tool, the tool does not need to adopt whole PCD piece to make profile blade, save material, when working, cutting force will also be decomposed into multiple discrete pulse force, with reduce the effect of risk of shock tool, reduce surface quality unqualified.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, and in particular to a high-efficiency PCD forming corn milling cutter. Background Technology

[0002] A milling cutter is a rotating cutting tool with one or more cutting teeth used for milling operations. During operation, the teeth sequentially and intermittently remove the excess material from the workpiece. Milling cutters are mainly used on milling machines to machine planes, steps, grooves, shaped surfaces, and cut off workpieces. In mechanical manufacturing, milling cutters are widely used in the machining of various parts, such as automobile engine blocks, housings, and gears. In mold manufacturing, they are used to machine the cavities and cores of various molds, such as injection molds and die-casting molds. In the aerospace field, milling cutters are used to machine aircraft wings and fuselage structural components, which typically require high-precision machining to meet the stringent requirements of aerospace products.

[0003] Existing cutting tools are limited by the size of PCD raw materials, and can only perform shaping processing on smaller contours. They cannot meet the milling needs of large contours, thus limiting the processing range. Therefore, continuous contour cutting edges are used for processing. However, continuous contour cutting edges need to be made from a whole PCD sheet, which will cause material waste and increase costs. In addition, continuous contour cutting edges will increase the difficulty of welding. Furthermore, continuous contour cutting edge tools will also increase the risk of tool vibration and the problem of unqualified product surface quality. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a high-efficiency PCD forming corn milling cutter. By adopting a manufacturing method with smaller PCD area and discontinuous cutting edges, this tool achieves the technical effect of being less prone to vibration and having high efficiency.

[0005] To solve the above-mentioned technical problems and achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution: The technical solution of this utility model is: a high-efficiency PCD forming corn milling cutter, including a cutter body, a cutter head provided at the front end of the cutter body, a rear cutting portion provided on the surface of the cutter head, multiple rear cutting portions provided, spaced around the surface of the cutter head, a rear PCD insert provided on one side of each rear cutting portion, a front cutting portion provided on the front end of the cutter head, multiple front cutting portions provided, spaced around the surface of the cutter head, a front PCD insert provided on one side of the inner wall of each front cutting portion, a middle cutting portion provided on the surface of the cutter head and located between the front cutting portion and the rear cutting portion, multiple middle cutting portions provided, spaced around the surface of the cutter head, a middle PCD insert provided on one side of the inner wall of each middle cutting portion, the rear PCD insert, the middle PCD insert and the front PCD insert constitute a corn milling cutter.

[0006] Furthermore, the front cutting section is provided with three parts, and each of the cutting heads has a chip guide groove at its front end and on one side of the front cutting section.

[0007] Furthermore, the intermediate cutting section is provided with three parts, and a first guide groove is formed on the surface of the cutter head and on one side of the intermediate cutting section.

[0008] Furthermore, the rear cutting section is provided with three parts, and a second guide groove is provided on the surface of the cutter head and on one side of the rear cutting section.

[0009] Furthermore, the surface of the blade is designed to be smooth.

[0010] Furthermore, the length of the blade is greater than the length of the blade tip.

[0011] Furthermore, the tail of the blade is provided with a tool holder that is connected to the processing table, and the tool holder has an injection cavity inside.

[0012] Furthermore, the blade body has a flow cavity connected to the injection cavity. The inner wall of the front cutting part and located on one side of the front PCD blade has a front liquid outlet hole. The inner wall of the middle cutting part and located on one side of the middle PCD blade has a middle liquid outlet hole. The inner wall of the rear cutting part and located on one side of the rear PCD blade has a rear liquid outlet hole. The front liquid outlet hole, the middle liquid outlet hole, and the rear liquid outlet hole are all connected to the top of the flow cavity.

[0013] Furthermore, the diameter of the blade head is larger than the diameter of the blade body, and the diameter of the blade holder is larger than the diameter of the blade body.

[0014] The beneficial technical effects of this utility model are as follows: By separating multiple front PCD inserts, middle PCD inserts, and rear PCD inserts into independent small cutting edges, and embedding them only locally in the cutting areas of the front cutting section, middle cutting section, and rear cutting section, while using ordinary metal substrates (such as cemented carbide) in the non-cutting areas, compared with traditional tools, this tool does not need to use a whole PCD sheet to make the contour edge, saving materials. At the same time, the PCD welding contact area in this tool is small, requiring less heat, and is more convenient to process. Moreover, the corn-shaped cutting tool composed of multiple front PCD inserts, middle PCD inserts, and rear PCD inserts cuts into the material sequentially during cutting, forming intermittent cutting. When processing products, this tool has a greater depth of cut and width of cut, and higher efficiency. In addition, during the working process, the cutting force is decomposed into multiple discrete pulse forces, rather than continuous concentrated loads, so that the cutting force is dispersed, thereby reducing the risk of tool vibration and reducing the problem of surface quality defects. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the structure of this utility model; Figure 3 This is a front view schematic diagram of the structure of the cutter head of this utility model; Figure 4 This is a three-dimensional structural schematic diagram of the present invention; Figure 5 This is a top view schematic diagram of the structure of the cutter head of this utility model.

[0016] The numbers and letters in the diagram represent the names of the corresponding components: 1. Tool body; 11. Flow chamber; 2. Tool holder; 21. Injection chamber; 3. Tool tip; 4. Rear cutting section; 41. Rear PCD insert; 42. Rear liquid outlet; 5. Middle cutting section; 51. Middle PCD insert; 52. Middle liquid outlet; 6. Front cutting section; 61. Front PCD insert; 62. Front liquid outlet; 63. Chip guide groove. Detailed Implementation

[0017] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0018] See appendix Figure 1-5 As shown, a high-efficiency PCD forming corn milling cutter includes a cutter body 1 with a smooth surface. The length of the cutter body 1 is greater than the length of the cutter head 3. A cutter holder 2 connected to a machining table is provided at the tail of the cutter body 1. An injection cavity 21 is provided inside the cutter holder 2. A cutter head 3 is provided at the front end of the cutter body 1. The diameter of the cutter head 3 is greater than the diameter of the cutter body 1. The diameter of the cutter holder 2 is greater than the diameter of the cutter body 1. The cutter is connected to a mounting base on a machining center through the cutter holder 2 behind the cutter body 1, and the cutter is driven to rotate around the axis of the cutter body 1.

[0019] The surface of the cutter head 3 is provided with a rear cutting section 4, and multiple rear cutting sections 4 are provided. The multiple rear cutting sections 4 are arranged at intervals around the surface of the cutter head 3. A rear PCD blade 41 is provided on one side of each rear cutting section 4. The front cutting section 6 is provided on the surface of the front end of the cutter head 3, and multiple front cutting sections 6 are arranged at intervals around the surface of the cutter head 3. A front PCD blade 61 is provided on one side of the inner wall of each front cutting section 6. A middle cutting section 5 is provided on the surface of the cutter head 3 and located between the front cutting section 6 and the rear cutting section 4. Multiple middle cutting sections 5 are arranged around the surface of the cutter head 3. A middle PCD blade 51 is provided on one side of the inner wall of each middle cutting section 5. The rear PCD blade 41, the middle PCD blade 51 and the front PCD blade 61 constitute the corn cutting tool (borrowing the segmented structure of corn cob, cutting PCD material into independent small cutting edges).

[0020] By dividing multiple front PCD inserts 61, middle PCD inserts 51, and rear PCD inserts 41 into independent small cutting edges, and embedding them only locally in the cutting areas of the front cutting section 6, middle cutting section 5, and rear cutting section 4, while using a common metal matrix such as cemented carbide in the non-cutting areas, when the tool is cutting, the multiple front PCD inserts 61 sequentially cut the surface of the material. As the tool penetrates deeper, the multiple middle PCD inserts 51 and the multiple rear PCD inserts 41 sequentially enlarge the hole. The corn-shaped cutting tool composed of the rear PCD inserts 41, middle PCD inserts 51, and front PCD inserts 61 can effectively disperse the cutting force, making it less prone to vibration. Therefore, it can withstand a larger cutting load and increase the depth of cut and width of cut. In the same amount of time, the corn-shaped cutting tool can complete the machining faster. Compared with traditional continuous contour cutting edge tools, the tool in this solution has higher working efficiency and smaller machining errors, which can effectively reduce the problem of surface quality defects.

[0021] Furthermore, there are three front cutting sections 6, and each cutter head 3 has a chip guide groove 63 on its front end and on one side of the front cutting section 6. There are three middle cutting sections 5, and the surface of the cutter head 3 and on one side of the middle cutting section 5 has a first guide groove. There are three rear cutting sections 4, and the surface of the cutter head 3 and on one side of the rear cutting section 4 has a second guide groove.

[0022] With a design consisting of three cutting sections (6 at the front, 5 at the middle, and 4 at the rear), the front PCD insert 61, the middle PCD insert 51, and the rear PCD insert 41 can be evenly distributed on the cutting area of ​​the tool head 3. By splicing multiple small-sized PCD inserts, they can be flexibly combined into complex shapes of any size, such as large stepped bearing holes. Furthermore, during tool production, the small welding contact area of ​​the front PCD insert 61, the middle PCD insert 51, and the rear PCD insert 41 results in low heat requirements, thus significantly reducing the difficulty of tool production.

[0023] The design of the chip guide groove 63, the first guide groove and the second guide groove can guide and discharge the waste chips cut by the front PCD insert 61, the middle PCD insert 51 and the rear PCD insert 41 during the workpiece machining process, so as to avoid affecting the tool machining.

[0024] Furthermore, the blade body 1 has a flow cavity 11 that communicates with the injection cavity 21. The inner wall of the front cutting part 6 and on one side of the front PCD blade 61 has a front liquid outlet 62. The inner wall of the middle cutting part 5 and on one side of the middle PCD blade 51 has a middle liquid outlet 52. The inner wall of the rear cutting part 4 and on one side of the rear PCD blade 41 has a rear liquid outlet 42. The front liquid outlet 62, the middle liquid outlet 52 and the rear liquid outlet 42 are all connected to the top of the flow cavity 11.

[0025] By setting up the injection chamber 21 and the flow chamber 11, when the tool is assembled with the machining center and the machining center drives the tool to rotate, the machining center can inject cutting fluid into the flow chamber 11 through the injection chamber 21. Then the cutting fluid flows out through the front outlet hole 62, the middle outlet hole 52 and the rear outlet hole 42, so that the cutting fluid can lubricate the corresponding front PCD insert 61, middle PCD insert 51 and rear PCD insert 41 while cooling them to ensure the normal operation of the tool.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-efficiency PCD forming corn milling cutter, characterized in that, include: The blade (1) has a cutting head (3) at its front end. A rear cutting portion (4) is formed on the surface of the cutting head (3). Multiple rear cutting portions (4) are arranged at intervals around the surface of the cutting head (3). Each rear cutting portion (4) has a rear PCD insert (41) on one side. A front cutting portion (6) is formed on the surface of the front end of the cutting head (3). Multiple front cutting portions (6) are arranged at intervals around the surface of the cutting head (3). A front PCD blade (61) is provided on one side of the inner wall of the front cutting part (6). A middle cutting part (5) is provided on the surface of the cutter head (3) between the front cutting part (6) and the rear cutting part (4). Multiple middle cutting parts (5) are arranged around the surface of the cutter head (3). A middle PCD blade (51) is provided on one side of the inner wall of each middle cutting part (5). The rear PCD blade (41), the middle PCD blade (51) and the front PCD blade (61) constitute the corn cutter.

2. The high-efficiency PCD forming corn milling cutter according to claim 1, characterized in that, The front cutting section (6) is provided in three parts, and each of the cutting heads (3) has a chip guide groove (63) at the front end and on one side of the front cutting section (6).

3. The high-efficiency PCD forming corn milling cutter according to claim 1, characterized in that, The middle cutting section (5) is provided with three parts, and the surface of the cutter head (3) and one side of the middle cutting section (5) are provided with a first guide groove.

4. The high-efficiency PCD forming corn milling cutter according to claim 3, characterized in that, The rear cutting section (4) is provided with three parts, and a second guide groove is provided on the surface of the cutter head (3) and on one side of the rear cutting section (4).

5. The high-efficiency PCD forming corn milling cutter according to claim 1, characterized in that, The blade (1) has a smooth surface.

6. The high-efficiency PCD forming corn milling cutter according to claim 1, characterized in that, The length of the blade (1) is greater than the length of the blade tip (3).

7. The high-efficiency PCD forming corn milling cutter according to claim 1, characterized in that, The tail of the blade (1) is provided with a tool holder (2) connected to the processing table, and the tool holder (2) has an injection cavity (21) inside.

8. The high-efficiency PCD forming corn milling cutter according to claim 7, characterized in that, The blade (1) has a flow chamber (11) connected to the injection chamber (21) inside. The inner wall of the front cutting part (6) and located on one side of the front PCD blade (61) has a front liquid outlet (62). The inner wall of the middle cutting part (5) and located on one side of the middle PCD blade (51) has a middle liquid outlet (52). The inner wall of the rear cutting part (4) and located on one side of the rear PCD blade (41) has a rear liquid outlet (42). The front liquid outlet (62), the middle liquid outlet (52) and the rear liquid outlet (42) are all connected to the top of the flow chamber (11).

9. The high-efficiency PCD forming corn milling cutter according to claim 8, characterized in that, The diameter of the blade head (3) is greater than the diameter of the blade body (1), and the diameter of the blade holder (2) is greater than the diameter of the blade body (1).

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