High-temperature-resistant combined type double-edge milling cutter

Abstract

The utility model belongs to the technical field of milling cutters, particularly relates to a high-temperature-resistant combined type double-edge milling cutter, and aims to solve the problems that the friction force between workpieces is larger, the workpieces are easy to abrade, the abraded centering is difficult to repair, the milling cutter needs to be replaced once the centering is seriously abraded, and the processing cost is increased as the conventional centering is directly contacted with the workpieces. According to the scheme, the milling cutter comprises a milling cutter head, and a cutter head material composition assembly and a centering mounting assembly which are positioned in the milling cutter head; the centering mounting assembly comprises a self-centering body, and a mounting block is fixedly mounted at the top of the self-centering body. According to the utility model, through the arrangement of the centering mounting component, the cutter head of the milling cutter can be quickly and accurately positioned, additional fixing force is provided, the stability of the cutter head of the milling cutter and the self-centering body in the high-speed rotating and working process is ensured, the whole mounting process is simple and quick, complicated tools or technologies are not needed, and the production efficiency is improved. The operation difficulty is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a double-edge milling cutter, in particular to a high-temperature resistant combined double-edge milling cutter, belonging to the technical field of milling cutters. Background Art

[0002] Double-edged milling cutter is a metal cutting tool composed of blade, cutting edge and handle. It is widely used in turning, milling, drilling and other machining occasions, especially in machining complex or small workpieces, such as machine tool parts, watch parts, electronic components, etc., it performs well, with the advantages of high reliability, long service life and simple operation. At the same time, due to its symmetrical design, the machining effect is more uniform, suitable for machining high-precision workpieces.

[0003] In the prior art, a double-edged ball-end hard titanium alloy milling cutter disclosed in announcement number CN215392730U includes a mounting head, a shock-absorbing seat, a cutter bar and a cutter head. A centering device is fixedly arranged at the center position of the bottom end of the cutter head. The beneficial effects of the utility model are: through a plurality of heat dissipation holes arranged on the surface of the cutter head, it is convenient to dissipate heat for the milling cutter, and to avoid damage to the milling cutter caused by high temperature. Through the centering device fixedly arranged at the center position of the bottom end of the cutter head, it is convenient to locate the milling position during the milling process, and to improve the accuracy of milling.

[0004] However, in actual use, the above patent sets a centering device, which facilitates the positioning of the milling position during the milling process and improves the milling accuracy. However, in actual use, since the centering device of the above patent is fixedly connected to the center position of the bottom end of the cutter head, it is not easy to disassemble. During the movement of the milling cutter, the centering device is in direct contact with the workpiece, so the friction between the workpieces is large, which is prone to wear, and the centering device is not easy to repair after wear. Once the wear is serious, the milling cutter needs to be replaced, which increases the processing cost. Utility Model Content

[0005] The utility model provides a high temperature resistant combined double-edged milling cutter to solve the problem that the centering cutter is fixedly connected to the center position of the bottom end of the cutter head, which makes it difficult to disassemble. The centering cutter is in direct contact with the workpiece during movement, so the friction between the workpieces is large, which is prone to wear. The centering cutter is not easy to repair after wear. Once the wear is serious, the milling cutter needs to be replaced, which increases the processing cost.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a high temperature resistant combined double-edged milling cutter, comprising a milling cutter head, and a cutter head material component component and a centering installation component located inside the milling cutter head;

[0007] The centering installation component includes a self-centering body, a mounting block is fixedly installed on the top of the self-centering body, elastic blocks are elastically installed on the left and right sides of the mounting block, a mounting groove is opened inside the milling cutter head, a fixed block is fixedly installed on the top of the mounting groove, and through holes are opened on the left and right sides of the mounting groove.

[0008] As a further solution of the utility model: the cutter head material component includes a tungsten steel alloy base layer, the tungsten steel alloy base layer is located inside the milling cutter head, and the surface of the tungsten steel alloy base layer is coated with a titanium nitride strengthening coating.

[0009] As a further solution of the utility model: the surface of the titanium nitride reinforcement coating is coated with a PVD heat-resistant coating, and the surface of the PVD heat-resistant coating is coated with a chromium nitride anti-sticking coating.

[0010] As a further solution of the utility model: a plurality of groups of chip removal grooves are arranged on the surface of the milling cutter head, and a plurality of groups of chip breaking blades are installed on the surface of the chip removal grooves.

[0011] As a further solution of the utility model: a first mounting ring is welded on the top of the milling cutter head, and a thread groove is provided inside the top of the milling cutter head.

[0012] As a further solution of the utility model: the internal thread of the thread groove is connected with a threaded connection block, the top of the threaded connection block is welded with a second mounting ring, and the top of the second mounting ring is welded with a milling cutter rod.

[0013] As a further solution of the utility model: a plurality of groups of limiting bolts are provided at the connection between the first mounting ring and the second mounting ring.

[0014] The beneficial effects of the utility model are:

[0015] 1. The setting of the centering installation component can ensure the rapid and accurate positioning of the milling cutter head, and at the same time provide additional fixing force, ensuring the stability of the milling cutter head and the self-centering body during high-speed rotation and working. The whole installation process is simple and fast, without the need for complicated tools or techniques, which reduces the difficulty of operation, improves work efficiency, and improves the existing milling cutter. During the movement, the centering is in direct contact with the workpiece, so the friction between the workpieces is large, which is prone to wear, and the centering is not easy to repair after wear. Once the wear is serious, the milling cutter needs to be replaced, which increases the processing cost.

[0016] 2. Through the set cutter head material composition components, in which the chromium nitride anti-sticking coating is combined with the PVD heat-resistant coating, the titanium nitride strengthening coating and the tungsten steel alloy base layer, the milling cutter head can effectively prevent the chips from sticking to the cutter head, reduce heat conduction, improve the stability and durability of the cutter head in high temperature environment, enhance the hardness and wear resistance of the cutter head, so that it can better cope with the processing needs of various materials and extend the service life of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a structural schematic diagram of the centering installation assembly of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the milling cutter bar and the milling cutter head of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the material composition components of the cutter head of the utility model.

[0021] In the figure: 1. Milling cutter shank; 2. Milling cutter head; 3. Chip breaker; 4. Cutter head material component components; 401. Chromium nitride anti-adhesive coating; 402. PVD heat-resistant coating; 403. Titanium nitride reinforcement coating; 404. Tungsten steel alloy base; 5. Centering and mounting components; 501. Self-centering body; 502. Elastic block; 503. Mounting block; 504. Mounting groove; 505. Fixed block; 6. Chip removal groove; 7. First mounting ring; 8. Second mounting ring; 9. Threaded connection block; 10. Limit bolt; 11. Threaded groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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. Embodiment 1

[0023] like Figures 1 to 4 As shown, a high temperature resistant combined double-edged milling cutter comprises a milling cutter head 2, and a cutter head material component 4 and a centering installation component 5 located inside the milling cutter head 2;

[0024] The centering installation component 5 includes a self-centering body 501, a mounting block 503 is fixedly installed on the top of the self-centering body 501, and elastic blocks 502 are elastically installed on the left and right sides of the mounting block 503, a mounting groove 504 is provided inside the milling cutter head 2, a fixing block 505 is fixedly installed on the top of the mounting groove 504, and through holes are provided on the left and right sides of the mounting groove 504; when in use, the mounting block 503 on the top of the self-centering body 501 can be placed inside the mounting groove 504, and then the mounting block 503 is rotated to make it stuck above the fixing block 505, at this time, the elastic block 502 passes through the through holes on the left and right sides of the mounting groove 504 under the action of elastic force, further completing the installation of the self-centering body 501, this setting can ensure the rapid and accurate positioning of the milling cutter head 2, and at the same time provide additional fixing force, ensuring the stability of the milling cutter head 2 and the self-centering body 501 during high-speed rotation and working, the whole installation process is simple and quick, does not require complicated tools or techniques, reduces the difficulty of operation, and improves work efficiency. Embodiment 2

[0025] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0026] The cutter head material component 4 includes a tungsten steel alloy base layer 404, which is located inside the milling cutter head 2. The surface of the tungsten steel alloy base layer 404 is coated with a titanium nitride strengthening coating 403; this setting enhances the hardness and wear resistance of the cutter head, enabling it to better cope with the processing requirements of various materials and extend the service life of the tool.

[0027] The surface of the titanium nitride reinforced coating 403 is coated with a PVD heat-resistant coating 402, and the surface of the PVD heat-resistant coating 402 is coated with a chromium nitride anti-sticking coating 401; the milling cutter head 2 effectively prevents chips from sticking to the cutter head, reduces heat conduction, and improves the stability and durability of the cutter head in high temperature environments.

[0028] The surface of the milling cutter head 2 is provided with a plurality of chip grooves 6, and the surface of the chip grooves 6 is provided with a plurality of chip breaking edges 3; the chip grooves 6 can play a chip removal role, and the chip breaking edges 3 can play a chip breaking role. Embodiment 3

[0029] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0030] A first mounting ring 7 is welded to the top of the milling cutter head 2 , and a thread groove 11 is provided inside the top of the milling cutter head 2 ; the thread groove 11 cooperates with the threaded connection block 9 to complete the preliminary installation of the milling cutter head 2 and the milling cutter arbor 1 .

[0031] The internal thread of the thread groove 11 is connected with a threaded connection block 9, a second mounting ring 8 is welded on the top of the threaded connection block 9, and a milling cutter arbor 1 is welded on the top of the second mounting ring 8; when in use, the milling cutter arbor 1 and the threaded connection block 9 are rotated to make them threadedly connected with the thread groove 11, thereby completing the preliminary installation of the milling cutter arbor 1 and the milling cutter head 2.

[0032] A plurality of sets of limiting bolts 10 are provided at the connection between the first mounting ring 7 and the second mounting ring 8; the limiting bolts 10 are passed through the through holes around the first mounting ring 7 and the second mounting ring 8 to further limit and fix the milling cutter arbor 1 and the milling cutter head 2.

[0033] Working principle: When using the high-temperature resistant combined double-edged milling cutter, the centering installation component 5 is set, and the installation block 503 on the top of the self-centering body 501 can be placed inside the installation groove 504, and then the installation block 503 is rotated to make it stuck on the top of the fixed block 505. At this time, the elastic block 502 passes through the through holes on the left and right sides of the installation groove 504 under the action of elastic force, and further completes the installation of the self-centering body 501. This setting can ensure the rapid and accurate positioning of the milling cutter head 2, and at the same time provide additional fixing force to ensure the stability of the milling cutter head 2 and the self-centering body 501 during high-speed rotation and working. The whole installation process is simple and fast, without the need for complicated tools or techniques, which reduces the difficulty of operation, improves work efficiency, and improves the existing milling cutter. During the movement, due to the direct contact between the centering and the workpiece, the friction between the workpieces is large, wear is prone to occur, and the centering is not easy to repair after wear. Once the wear is serious, the milling cutter needs to be replaced, which increases the problem of processing cost; through the set threaded connection block 9, the milling cutter rod 1 and the threaded connection block 9 are rotated during use to make them threadedly connected with the thread groove 11, and the preliminary installation of the milling cutter rod 1 and the milling cutter head 2 is completed, and then the limit bolt 10 is passed through the through holes around the first mounting ring 7 and the second mounting ring 8 to complete the further limiting and fixing of the milling cutter rod 1 and the milling cutter head 2; through the set cutter head material composition component 4, in which the chromium nitride anti-sticking coating 401 is combined with the PVD heat-resistant coating 402, the titanium nitride strengthening coating 403 and the tungsten steel alloy base layer 404, the milling cutter head 2 effectively prevents the adhesion of chips on the cutter head, reduces heat conduction, improves the stability and durability of the cutter head in a high temperature environment, and enhances the hardness and wear resistance of the cutter head, so that it can better cope with the processing requirements of various materials and extend the service life of the tool.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high temperature resistant combined double-edged milling cutter, characterized in that: It comprises a milling cutter head (2), and a cutter head material component component (4) and a centering installation component (5) located inside the milling cutter head (2); The centering installation component (5) comprises a self-centering body (501), a mounting block (503) is fixedly installed on the top of the self-centering body (501), elastic blocks (502) are elastically installed on the left and right sides of the mounting block (503), a mounting groove (504) is provided inside the milling cutter head (2), a fixing block (505) is fixedly installed on the top of the mounting groove (504), and through holes are provided on the left and right sides of the mounting groove (504).

2. A high temperature resistant combined double-edged milling cutter according to claim 1, characterized in that: The tool head material component (4) comprises a tungsten steel alloy base layer (404), the tungsten steel alloy base layer (404) is located inside the milling cutter head (2), and the surface of the tungsten steel alloy base layer (404) is coated with a titanium nitride strengthening coating (403).

3. A high temperature resistant combined double-edge milling cutter according to claim 2, characterized in that: The surface of the titanium nitride reinforcement coating (403) is coated with a PVD heat-resistant coating (402), and the surface of the PVD heat-resistant coating (402) is coated with a chromium nitride anti-adhesion coating (401).

4. The high temperature resistant combined double-edge milling cutter according to claim 1, characterized in that: The surface of the milling cutter head (2) is provided with a plurality of groups of chip removal grooves (6), and the surface of the chip removal grooves (6) is provided with a plurality of groups of chip breaking blades (3).

5. The high temperature resistant combined double-edge milling cutter according to claim 1, characterized in that: A first mounting ring (7) is welded to the top of the milling cutter head (2), and a thread groove (11) is provided inside the top of the milling cutter head (2).

6. A high temperature resistant combined double-edge milling cutter according to claim 5, characterized in that: The internal thread of the thread groove (11) is connected to a threaded connection block (9), a second mounting ring (8) is welded to the top of the threaded connection block (9), and a milling cutter shank (1) is welded to the top of the second mounting ring (8).

7. The high temperature resistant combined double-edge milling cutter according to claim 5, characterized in that: A plurality of sets of limiting bolts (10) are provided at the connection between the first mounting ring (7) and the second mounting ring (8).

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