PCD multifunctional milling cutter

Abstract

The utility model discloses a PCD (Poly Crystal Diamond) multifunctional milling cutter and relates to the related technical field of cutters. The cutter comprises a cutter body, the cutter body comprises a cutter handle and a blade portion, the blade portion comprises a cutter head portion, two hard alloy replaceable blades and a first PCD blade, a connecting portion is arranged between one end of the cutter head portion and the cutter handle, and two mounting grooves are formed in the edge of the other end of the cutter head portion. A hard alloy replaceable blade is installed on one side in each installation groove through a screw, two spiral chip grooves and two spiral blade sets are formed in the edge of the connecting part, a first PCD blade is arranged on the other side in each installation groove, each spiral blade set comprises one or more second PCD blades, and the two spiral chip grooves and the two spiral blade sets are formed in the edge of the connecting part. The spiral blade sets on the same side and the first PCD blades on the installation grooves on the same side are distributed in a spiral mode. According to the structure, the hard alloy replaceable blade can be replaced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the relevant technical field of cutting tools, in particular to a PCD multifunctional milling cutter. Background Art

[0002] A tool is a tool used for cutting in mechanical manufacturing, also known as a cutting tool. The Chinese patent number 202020585205.1 previously applied for by our company discloses a two-edged composite tool for drilling, reaming, milling and chamfering, including a tool body, a tool head is provided at the front end of the tool body, the tool head includes a blade edge, a drill bit, a chamfering edge and a spiral chip groove, the drill bit is in a cone shape protruding forward, and the edge of the drill bit is provided with two spiral chip grooves that are centrally symmetrical about the axis of the tool body, a spiral blade edge is formed between the two spiral chip grooves, the blade edge includes a milling edge and a reaming edge, the milling edge and the reaming edge are both spirally protruding edge strips, the connection between the milling edge, the reaming edge and the tool body is through The arc-shaped bevel is connected to form a chamfered edge at the connection between the arc-shaped bevel and the tool body. The right ends of the milling edge and the reaming edge are connected to the drill bit, and the left ends are connected to the chamfered edge. This can directly avoid the tediousness of replacing and debugging the tool, and speed up the production and processing process and shorten the production cycle. Although this patent can simultaneously realize the functions of drilling, reaming and milling, it still has the following problems: the drill bit and other reaming and milling are an integrated structure, and during use, once the drill head is severely worn or broken, the entire tool is easily scrapped, which ultimately affects the service life of the entire product; and the whole adopts the same material, resulting in high cost, so it needs to be improved. Utility Model Content

[0003] The utility model aims to provide a PCD multifunctional milling cutter, which solves the problem that the existing tools have the problem that the head drill bit cannot be replaced in the later stage. Once the drill bit is severely worn or the head is broken, the entire product is easily scrapped, which ultimately affects the service life of the entire product. In addition, the same material is used as a whole, resulting in high costs.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a PCD multifunctional milling cutter, comprising a tool body, wherein the tool body comprises a tool handle and a blade, wherein the blade is located at one end of the tool handle, wherein the blade comprises a cutter head, two carbide replaceable blades and a PCD blade 1, wherein a connecting portion is arranged between one end of the cutter head and the tool handle, wherein the edge of the other end of the cutter head is provided with two mounting grooves which are centrally symmetrical about the axis of the tool body, wherein a carbide replaceable blade is mounted on one side of each mounting groove by screws, wherein the head portion of the carbide replaceable blade extends out of the end face of the cutter head which is away from the connecting portion, wherein two spiral chip removal grooves which are centrally symmetrical about the axis of the tool body and two groups of spiral blade groups which are centrally symmetrical about the axis of the tool body are arranged on the edge of the connecting portion, wherein a PCD blade 1 is arranged on the other side of each mounting groove, wherein the PCD blade 1 serves as an upper chamfering cutter head, wherein each group of spiral blade groups comprises more than one PCD blade 2, wherein the spiral blade group on the same side and the PCD blade 1 on the mounting groove on the same side are spirally distributed, and wherein all PCD blades 2 on the same side cooperate to form a milling cutter head.

[0006] Preferably, the lower chamfering operation can be realized simultaneously, and two chip grooves 1 which are centrally symmetrical about the axis of the tool body and two PCD inserts 3 which are centrally symmetrical about the axis of the tool body are provided on the edge of the tool handle, and the PCD inserts 3 are used as lower chamfering cutter heads.

[0007] Preferably, the edge of the other end of the tool head is further provided with two inclined table surfaces 1 which are centrally symmetrical about the axis of the tool body, and each inclined table surface 1 is sandwiched between two mounting grooves.

[0008] Preferably, the replaceable cemented carbide insert comprises a first cut surface, a second cut surface, a first bevel, a second bevel, a third bevel and a fourth bevel, wherein the first cut surface, the second cut surface, the third bevel, the fourth bevel, the first bevel and the second bevel are connected in pairs in sequence to form a closed loop structure, and the connection between the first cut surface and the second cut surface, between the third bevel and the fourth bevel, and between the first bevel and the second bevel is an obtuse angle, and the connection between the second cut surface and the third bevel is a third arc surface, the connection between the fourth bevel and the first bevel is a first arc surface, the connection between the first cut surface and the second bevel is a second arc surface, and the connection between the first cut surface and the second cut surface serves as a drill head.

[0009] Preferably, in order to facilitate installation, installation notch 1 and installation notch 2 are provided in the installation groove, the replaceable cemented carbide blade is placed in installation notch 1, the PCD blade 1 is placed in installation notch 2, and an arc-shaped notch matching the first arc surface is provided in the installation notch 1.

[0010] Preferably, in order to further quickly guide the waste chips, a first arc-shaped chip guide channel is arranged on the side of the second mounting notch, and the first arc-shaped chip guide channel is connected to the chip groove one. At the edge of the connecting portion, more than one mounting notch three is spirally distributed, and each PCD blade two is installed on the corresponding mounting notch three, and each mounting notch three is also provided with a second arc-shaped chip guide channel connected to the chip groove one. Two mounting notches four are symmetrically arranged on the side of the cutter head, and each mounting notch four is provided with a PCD blade three.

[0011] Preferably, a mounting through hole is provided on both sides of the cutter head, and the screw passes through the mounting through hole and is threadedly connected with the corresponding cemented carbide replaceable blade.

[0012] Preferably, the cutter head, the connecting part and the cutter handle are integrally formed, the PCD blade three and the PCD blade one are mirror images of each other, and the PCD blade two is a semi-arc surface structure, and the PCD blade three, the PCD blade two and the PCD blade one are all installed at corresponding positions by welding.

[0013] The utility model has the following beneficial effects:

[0014] First point: The drilling and roughing tool, milling tool and chamfering tool are combined together to realize the function of three types of tools in one tool; the function is diversified, and the same type of holes or waist grooves of different sizes can be handled by one tool, and it can also be used only for drilling and roughing or for side milling of planes, and the tool has high accessibility;

[0015] Second point: The head drilling tool adopts a disassembly installation, which is convenient for later disassembly and replacement of the head drill bit, thereby increasing the service life of the entire product. Moreover, the drill bit, chamfering and milling cutter are made of different materials, thus reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of a PCD multifunctional milling cutter in Example 1 is shown in FIG. Figure 1 ;

[0017] Figure 2 The overall structure of a PCD multifunctional milling cutter in Example 1 is shown in FIG. Figure 2 ;

[0018] Figure 3 The overall structure of a PCD multifunctional milling cutter in Example 1 is shown in FIG. Figure 3 ;

[0019] Figure 4 The overall structure of a PCD multifunctional milling cutter in Example 1 is shown in FIG. Figure 4 ;

[0020] Figure 5 for Figure 4 A schematic diagram of the separation structure of one of the replaceable carbide blades and the PCD blade from other parts;

[0021] Figure 6 This is a schematic diagram of the structure of the replaceable cemented carbide insert in Example 1.

[0022] Figure numerals: tool body 1, tool handle 101, blade 102, screw 2, tool head 3, cemented carbide replaceable blade 4, first cut surface 401, second cut surface 402, first bevel 403, second bevel 404, third bevel 405, fourth bevel 406, PCD blade one 5, connecting part 6, spiral chip groove 7, PCD blade two 8, mounting groove 9, chip groove one 10, PCD blade three 11, inclined table one 12, third arc surface 13, second arc surface 14, first arc surface 15, mounting notch one 16, mounting notch two 17, arc-shaped notch 18, first arc-shaped chip guide channel 19, mounting notch three 20, second arc-shaped chip guide channel 21, mounting notch four 22, mounting through hole 23. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-6As shown, a PCD multifunctional milling cutter disclosed in this embodiment includes a tool body 1, wherein the tool body 1 includes a tool handle 101 and a blade 102, wherein the blade 102 is located at one end of the tool handle 101, and wherein the blade 102 includes a tool head 3, two carbide replaceable blades 4 and a PCD blade 5, wherein a connecting portion 6 is provided between one end of the tool head 3 and the tool handle 101, and wherein the edge of the other end of the tool head 3 is provided with two mounting grooves 9 which are centrally symmetrical about the axis of the tool body 1, and wherein a carbide replaceable blade 4 is mounted on one side of each mounting groove 9 by means of a screw 2, wherein the head portion of the carbide replaceable blade 4 extends outward from the tool head 3. The end face of the cutter head portion 3 is away from the connecting portion 6, and two spiral chip removal grooves 7 which are centrally symmetrical about the axis of the tool body 1 and two groups of spiral blade groups which are centrally symmetrical about the axis of the tool body 1 are provided on the edge of the connecting portion 6. A PCD blade 5 is provided on the other side of each mounting groove 9. The PCD blade 5 serves as an upper chamfering cutter head. Each group of spiral blade groups includes more than one PCD blade 2 8. The spiral blade group on the same side and the PCD blade 5 on the mounting groove 9 on the same side are spirally distributed. All PCD blades 2 8 on the same side cooperate to form a milling cutter head. The PCD described in this embodiment is the material of the tool, that is, diamond.

[0026] Preferably, the lower chamfering operation can be realized simultaneously, and two chip grooves 10 which are centrally symmetrical about the axis of the tool body 1 and two PCD blades 11 which are centrally symmetrical about the axis of the tool body 1 are provided on the edge of the tool handle 101, and the PCD blades 11 are used as lower chamfering cutter heads.

[0027] Preferably, the edge of the other end of the cutter head 3 is further provided with two inclined table surfaces 12 which are centrally symmetrical about the axis of the cutter body 1 , and each inclined table surface 12 is sandwiched between two mounting grooves 9 .

[0028] Preferably, the replaceable cemented carbide blade 4 includes a first cutting surface 401, a second cutting surface 402, a first bevel 403, a second bevel 404, a third bevel 405 and a fourth bevel 406, wherein the first cutting surface 401, the second cutting surface 402, the third bevel 405, the fourth bevel 406, the first bevel 403 and the second bevel 404 are connected in pairs in sequence to form a closed loop structure, and the connection between the first cutting surface 401 and the second cutting surface 402, between the third bevel 405 and the fourth bevel 406, and between the first bevel 403 and the second bevel 404 is an obtuse angle, and the connection between the second cutting surface 402 and the third bevel 405 is a third arc surface 13, the connection between the fourth bevel 406 and the first bevel 403 is a first arc surface 15, the connection between the first cutting surface 401 and the second bevel 404 is a second arc surface 14, and the connection between the first cutting surface 401 and the second cutting surface 402 serves as a drill head.

[0029] Preferably, in order to facilitate installation, an installation notch 16 and an installation notch 2 17 are provided in the installation groove 9, the replaceable cemented carbide blade 4 is placed in the installation notch 16, the PCD blade 1 5 is placed in the installation notch 2 17, and an arc-shaped notch 18 matching the first arc surface 15 is provided in the installation notch 16.

[0030] Preferably, in order to further quickly guide the waste chips, a first arc-shaped chip guide channel 19 is provided on the side of the mounting notch 2 17, and the first arc-shaped chip guide channel 19 is connected to the chip groove 10. At the edge of the connecting portion 6, more than one mounting notch 3 20 is spirally distributed, and each PCD blade 2 8 is mounted on the corresponding mounting notch 3 20, and each mounting notch 3 20 is also provided with a second arc-shaped chip guide channel 21 connected to the chip groove 10. Two mounting notches 4 22 are symmetrically provided on the side of the cutter head 3, and each mounting notch 4 22 is provided with a PCD blade 3 11. In this embodiment, the first arc-shaped chip guide channel 19 is provided on the side of the PCD blade 5 to facilitate the transportation of chips into the chip groove 10. Similarly, the second arc-shaped chip guide channel 21 is provided to facilitate the transportation of chips into the chip groove 10, thereby improving the chip removal efficiency, and cooperating with the side table to prevent chips from flying around.

[0031] Preferably, a mounting through hole 23 is provided on both sides of the cutter head 3, and the screw 2 passes through the mounting through hole 23 and is threadedly connected with the corresponding cemented carbide replaceable blade 4, so that the screw 2 can be easily installed by providing the mounting through hole 23.

[0032] Preferably, the cutter head 3, the connecting portion 6 and the shank 101 are integrally formed, the PCD blade three 11 and the PCD blade one 5 are mirror images of each other, and the PCD blade two 8 is a semi-arc surface structure, and the PCD blade three 11, the PCD blade two 8 and the PCD blade one 5 are all installed at corresponding positions by welding.

[0033] The working principle of this structure: Since the front part is two black carbide replaceable blades 4, the blade model is CCGT080408-AL, which can be purchased and used for drilling operations, and the carbide replaceable blades 4 are connected to the cutter head 3 by screws 2, which is convenient for later disassembly, and the back part uses spiral multi-blade blades, the head and tail parts use chamfering tools, namely PCD blade 1 5 and PCD blade 3 11, and the middle four PCD blades 2 8 are used as milling tools, and the welded PCD blades are used for milling contours and upper and lower chamfers, so that the drilling, milling contours and positive and negative chamfering functions can be realized during work. Therefore, the advantages of the entire tool are:

[0034] First point: It combines drilling and roughing tools, milling tools and chamfering tools together to achieve a tool that combines the functions of three types of tools; it diversifies the functions and enables one tool to handle holes or waist grooves of the same type but different sizes, or it can be used only for drilling and roughing or for side milling of planes, and the tool has high accessibility; Second point: The head drilling tool adopts a detachable installation, which is convenient for later disassembly and replacement of the head drill bit, thereby increasing the service life of the entire product, and the drill bit, chamfering and milling cutter are made of different materials to reduce costs.

[0035] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A PCD multifunctional milling cutter, comprising a tool body (1), wherein the tool body (1) comprises a tool handle (101) and a blade (102), wherein the blade (102) is located at one end of the tool handle (101), and wherein: The blade portion (102) comprises a cutter head (3), two replaceable carbide blades (4) and a PCD blade (5); a connecting portion (6) is provided between one end of the cutter head (3) and the handle (101); the other end edge of the cutter head (3) is provided with two mounting grooves (9) which are centrally symmetrical about the axis of the tool body (1); a replaceable carbide blade (4) is mounted on one side of each mounting groove (9) by means of a screw (2); the head portion of the replaceable carbide blade (4) extends out from the end face of the cutter head (3) away from the connecting portion (6), and the connecting portion (6) is provided on the other end edge of the cutter head (3). The edge of the connecting portion (6) is provided with two spiral chip removal grooves (7) which are centrally symmetrical about the axis of the tool body (1) and two groups of spiral blade sets which are centrally symmetrical about the axis of the tool body (1). A PCD blade one (5) is arranged on the other side of each mounting groove (9). The PCD blade one (5) serves as an upper chamfering cutter head. Each group of spiral blade sets includes more than one PCD blade two (8). The spiral blade set on the same side and the PCD blade one (5) on the mounting groove (9) on the same side are spirally distributed. All PCD blades two (8) on the same side cooperate to form a milling cutter head.

2. A PCD multifunctional milling cutter according to claim 1, characterized in that: Two chip removal grooves (10) which are centrally symmetrical about the axis of the tool body (1) and two PCD blades (11) which are centrally symmetrical about the axis of the tool body (1) are provided on the edge of the tool handle (101), and the PCD blades (11) are used as lower chamfering cutter heads.

3. A PCD multifunctional milling cutter according to claim 1, characterized in that: The other end edge of the cutter head (3) is also provided with two inclined table surfaces (12) which are centrally symmetrical about the axis of the cutter body (1), and each inclined table surface (12) is sandwiched between two mounting grooves (9).

4. A PCD multifunctional milling cutter according to claim 2, characterized in that: The replaceable cemented carbide blade (4) comprises a first cut surface (401), a second cut surface (402), a first bevel (403), a second bevel (404), a third bevel (405) and a fourth bevel (406), wherein the first cut surface (401), the second cut surface (402), the third bevel (405), the fourth bevel (406), the first bevel (403) and the second bevel (404) are sequentially connected in pairs to form a closed loop structure, and the first cut surface (401), the second cut surface (402), the third bevel (405) and the fourth bevel (406) are connected in pairs to form a closed loop structure. The connection between the first and second bevels (401) and the fourth bevel (406) and between the first bevel (403) and the second bevel (404) is an obtuse angle, and the connection between the second cut surface (402) and the third bevel (405) is a third curved surface (13), the connection between the fourth bevel (406) and the first bevel (403) is a first curved surface (15), the connection between the first cut surface (401) and the second bevel (404) is a second curved surface (14), and the connection between the first cut surface (401) and the second cut surface (402) serves as a drill head (3).

5. A PCD multifunctional milling cutter according to claim 4, characterized in that: A first installation notch (16) and a second installation notch (17) are provided in the installation groove (9); the replaceable cemented carbide blade (4) is placed in the first installation notch (16); the first PCD blade (5) is placed in the second installation notch (17); and an arc-shaped notch (18) matching the first arc surface (15) is provided in the first installation notch (16).

6. A PCD multifunctional milling cutter according to claim 5, characterized in that: A first arc-shaped chip guide channel (19) is arranged on the side of the mounting notch 2 (17), and the first arc-shaped chip guide channel (19) is connected to the chip removal groove 1 (10). At the edge of the connecting portion (6), one or more mounting notches 3 (20) are spirally distributed, and each PCD insert 2 (8) is mounted on the corresponding mounting notch 3 (20), and each mounting notch 3 (20) is also provided with a second arc-shaped chip guide channel (21) connected to the chip removal groove 1 (10). Two mounting notches 4 (22) are symmetrically arranged on the side of the cutter head (3), and each mounting notch 4 (22) is provided with one of the PCD inserts 3 (11).

7. A PCD multifunctional milling cutter according to claim 1, characterized in that: A mounting through hole (23) is provided on both sides of the cutter head (3), and the screw (2) passes through the mounting through hole (23) and is threadedly connected to the corresponding cemented carbide replaceable blade (4).

8. A PCD multifunctional milling cutter according to claim 2, characterized in that: The blade head (3), the connecting part (6) and the blade handle (101) are integrally formed, the PCD blade three (11) and the PCD blade one (5) are mirror-imaged up and down, and the PCD blade two (8) is a semi-arc surface structure, and the PCD blade three (11), the PCD blade two (8) and the PCD blade one (5) are all installed at corresponding positions by welding.

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