Combined hard alloy milling cutter easy to assemble

Abstract

The utility model belongs to the technical field of machining tools, and particularly relates to a combined type easy-to-assemble hard alloy milling cutter which comprises a cutter holder, a blade and a clamping rod, a mounting block is fixed on the outer wall of the blade, the combined type easy-to-assemble hard alloy milling cutter further comprises a pressing plate, a mounting groove for the mounting block to be embedded is machined on the cutter holder, and the pressing plate is located in the mounting groove; the inner bottom surface of the mounting groove and the bottom surface of the pressing plate are both fixedly provided with the positioning convex blocks, and the mounting block is provided with a positioning groove in which the positioning convex blocks are embedded; a threaded screw rod; according to the blade mounting device, the threaded lead screw is rotated to enable the pressing plate to move downwards and press the mounting block, meanwhile, the positioning protruding blocks are embedded into the corresponding positioning grooves, stable mounting of the blade can be achieved, mounting is convenient and fast, the pressing direction of the pressing plate is perpendicular to the rotating direction of the blade in the working process, and the influence caused by reverse acting force can be effectively reduced; the stability of the blade is ensured, and the safety of long-time operation is also ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining tool, concretely relates to a combined hard alloy milling cutter easy to assemble. BACKGROUND

[0002] Tungsten steel hard alloy cutter is a cutter with tungsten steel (hard alloy) as material, has a series of excellent performance such as high hardness, high wear resistance, good strength and toughness, heat resistance and corrosion resistance, tungsten steel cutter is especially suitable for high speed cutting and heavy cutting, can keep high hardness even in high temperature environment.

[0003] Milling cutter is a very common machining tool, and the milling cutter is a rotary cutter for milling machining, has one or more cutter teeth, and each cutter tooth intermittently cuts the excess of the workpiece in turn during work, and the milling cutter is mainly used for machining plane, step, groove, shaped surface and cutting workpiece on a milling machine.

[0004] In the prior art, the inserts of tungsten steel hard alloy cutters are generally fastened on the surface of the shank by bolts during installation, although the inserts are easy to assemble, but during actual machining, the inserts rotate at high speed and are subjected to high reverse force from the workpiece, so that the inserts are prone to shaking, affecting the stability of screw connection, and the safety is low during long-time operation.

[0005] To solve the above problems, the utility model provides a combined hard alloy milling cutter easy to assemble. CONTENT OF THE UTILITY MODEL

[0006] To solve the above problems in the prior art, the utility model provides a combined hard alloy milling cutter easy to assemble, which has the characteristics of convenient use and high stability.

[0007] To achieve the above object, the utility model provides the following technical scheme: a combined hard alloy milling cutter easy to assemble, comprising a tool holder, a plurality of inserts fixed on the outer wall of the tool holder at equal intervals in the circumferential direction and a clamping rod fixed on the top end of the tool holder, an installation block is fixed on the outer wall of the insert, and the combined hard alloy milling cutter easy to assemble further comprises:

[0008] A pressing plate is arranged in the installation groove, and the pressing plate is located in the installation groove;

[0009] A positioning lug is fixed on the inner bottom surface of the installation groove and the bottom surface of the pressing plate, and a positioning groove is arranged on the installation block and embedded with the positioning lug;

[0010] A threaded screw rod is arranged on the tool holder in a threaded and screwed manner, and the bottom end of the threaded screw rod is rotatably connected to the pressing plate by a bearing.

[0011] As a preferred technical scheme of the utility model, further include:

[0012] The abutting block is fixed to the bottom surface of the compression plate, an auxiliary groove for embedding the abutting block is processed on the mounting block, and the inner bottom surface of the auxiliary groove and the bottom surface of the abutting block are matching inclined surfaces.

[0013] As a preferred technical scheme of the utility model, the positioning groove is a waist-shaped groove.

[0014] As a preferred technical scheme of the utility model, two positioning convex blocks are fixed to the inner bottom surface of the mounting groove and the bottom surface of the compression plate.

[0015] As a preferred technical scheme of the utility model, further include:

[0016] The rubber gasket is fixedly bonded to the outer wall of the tool holder and abuts against the blade.

[0017] As a preferred technical scheme of the utility model, further include:

[0018] The guide column is fixed to the top surface of the compression plate in a symmetrical manner, and the guide column penetrates the tool holder.

[0019] As a preferred technical scheme of the utility model, further include:

[0020] The cross groove knob is fixed to the top end of the threaded screw rod.

[0021] As a preferred technical scheme of the utility model, further include:

[0022] The fixing flange is fixed to the bottom end of the clamping rod, and the clamping rod is fixed to the top surface of the tool holder by the fixing flange and the bolt.

[0023] Compared with the prior art, the utility model has the beneficial effects that:

[0024] In the utility model, the threaded screw rod is rotated to move the compression plate downward and compress the mounting block, and the positioning convex block is embedded into the corresponding positioning groove, so that the blade can be stably installed, the installation is convenient, the compression direction of the compression plate is perpendicular to the rotating direction of the blade during work, the influence of the reverse force can be effectively reduced, the stability of the blade is ensured, and the safety of long-time operation is ensured.

[0025] Other additional advantages and beneficial effects of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood through the practice of the utility model. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a partially enlarged structural diagram of the tool holder in this utility model;

[0029] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the blade in this utility model;

[0030] Figure 4 This is a schematic diagram of the isometric structure of the blade in this utility model.

[0031] In the diagram: 1. Tool holder; 11. Mounting groove; 12. Rubber gasket; 2. Blade; 21. Mounting block; 211. Positioning groove; 212. Auxiliary groove; 3. Clamping rod; 31. Fixing flange; 4. Pressure plate; 41. Abutting block; 5. Positioning protrusion; 6. Threaded screw; 61. Cross-groove knob; 7. Guide post. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-4 The present invention provides the following technical solution: a modular, easily assembled carbide end mill, including a tool holder 1, a plurality of blades 2 fixed at equal intervals along the circumferential direction on the outer wall of the tool holder 1, and a clamping rod 3 fixed to the top of the tool holder 1, with an mounting block 21 fixed on the outer wall of the blades 2, and also including: a clamping plate 4, a positioning protrusion 5, and a threaded screw 6.

[0034] Furthermore, by Figure 1 , Figure 2 and Figure 4As shown, in the embodiment, the tool holder 1 is provided with a mounting groove 11 for embedding the mounting block 21, the pressing plate 4 is located in the mounting groove 11, the positioning protrusions 5 are fixed on the inner bottom surface of the mounting groove 11 and the bottom surface of the pressing plate 4, the mounting block 21 is provided with a positioning groove 211 for embedding the positioning protrusions 5, the threaded screw rod 6 is threadedly mounted on the tool holder 1, and the bottom end of the threaded screw rod 6 is rotatably connected to the pressing plate 4 by a bearing. After the above scheme is adopted, when the tool blade 2 is installed, the mounting block 21 is first inserted into the mounting groove 11, and the positioning protrusions 5 on the inner bottom surface of the mounting groove 11 are embedded into the positioning groove 211 on the bottom surface of the mounting block 21. Then, the threaded screw rod 6 is screwed, so that the threaded screw rod 6 pushes the pressing plate 4 downward under the threaded rotation, and the pressing plate 4 presses the mounting block 21 from the upper part. At this time, the positioning protrusions 5 on the bottom surface of the pressing plate 4 are embedded into the positioning groove 211 on the top surface of the mounting block 21 to further form a limit, so that the tool blade 2 can be stably installed, the installation is convenient, the pressing direction of the pressing plate 4 is perpendicular to the rotation direction of the tool blade 2 during work, the influence of the reverse force can be effectively reduced, the stability of the tool blade 2 is ensured, and the safety during long-time operation is also ensured.

[0035] Preferably, the mounting block 21 is provided with a positioning groove 211 for embedding the positioning protrusion 5. Figures 1-4 As shown, in the embodiment, the tool holder 1 is provided with a mounting groove 11 for embedding the mounting block 21, the pressing plate 4 is located in the mounting groove 11, the positioning protrusions 5 are fixed on the inner bottom surface of the mounting groove 11 and the bottom surface of the pressing plate 4, the mounting block 21 is provided with a positioning groove 211 for embedding the positioning protrusions 5, the threaded screw rod 6 is threadedly mounted on the tool holder 1, and the bottom end of the threaded screw rod 6 is rotatably connected to the pressing plate 4 by a bearing. After the above scheme is adopted, when the tool blade 2 is installed, the mounting block 21 is first inserted into the mounting groove 11, and the positioning protrusions 5 on the inner bottom surface of the mounting groove 11 are embedded into the positioning groove 211 on the bottom surface of the mounting block 21. Then, the threaded screw rod 6 is screwed, so that the threaded screw rod 6 pushes the pressing plate 4 downward under the threaded rotation, and the pressing plate 4 presses the mounting block 21 from the upper part. At this time, the positioning protrusions 5 on the bottom surface of the pressing plate 4 are embedded into the positioning groove 211 on the top surface of the mounting block 21 to further form a limit, so that the tool blade 2 can be stably installed, the installation is convenient, the pressing direction of the pressing plate 4 is perpendicular to the rotation direction of the tool blade 2 during work, the influence of the reverse force can be effectively reduced, the stability of the tool blade 2 is ensured, and the safety during long-time operation is also ensured.

[0036] Preferably, the mounting block 21 is provided with a positioning groove 211 for embedding the positioning protrusion 5. Figure 1 , Figure 2 and Figure 4 As shown, in the embodiment, the positioning groove 211 is a waist-shaped groove. After the above scheme is adopted, in use, the installation position of the tool blade 2 can be more easily positioned. In another aspect of the embodiment, the tool blade 2 has a certain transverse movement range. After the pressing plate 4 presses the mounting block 21 from the upper part, the positioning protrusion 5 is located at the end of the positioning groove 211, and the tool blade 2 is tightly abutted against the tool holder 1, so that the stability is high.

[0037] Preferably, the mounting block 21 is provided with a positioning groove 211 for embedding the positioning protrusion 5. Figure 1 , Figure 2 and Figure 4As shown, in the embodiment, two positioning protrusions 5 are fixed on the inner bottom surface of the installation groove 11 and the bottom surface of the pressing plate 4, and after the above design, the positioning stability of the positioning protrusions 5 to the blade 2 is higher.

[0038] Preferably, the blade 2 is fixed on the inner wall of the blade seat 1. Figure 1 and Figure 2 As shown, in the embodiment, the rubber pad 12 is fixed on the outer wall of the blade seat 1 and abuts against the blade 2, and after the above design, after the blade 2 is fixed, the blade 2 presses the rubber pad 12 together with the blade seat 1, the rubber pad 12 shrinks, the rubber pad 12 is flexible, the stability of the blade 2 in work is further improved, the effect of buffering and shock resistance is achieved, a part of shaking of the blade 2 in work is offset, and the safety in work is improved.

[0039] Preferably, the blade 2 is fixed on the inner wall of the blade seat 1. Figure 1 and Figure 2 As shown, in the embodiment, the two guide columns 7 are fixed on the top surface of the pressing plate 4 and penetrate the blade seat 1, and after the above design, in use, the two guide columns 7 are used for guiding the pressing plate 4, and the stability of the pressing plate 4 is improved.

[0040] Preferably, the blade 2 is fixed on the inner wall of the blade seat 1. Figure 1 and Figure 2 As shown, in the embodiment, the cross groove knob 61 is fixed on the top end of the threaded rod 6, and after the above design, in use, the cross groove knob 61 is used for rotating the threaded rod 6 with the aid of a tool.

[0041] Preferably, the blade 2 is fixed on the inner wall of the blade seat 1. Figure 1 Figure 2 Figure 1 As shown, in the embodiment, the fixing flange 31 is fixed on the bottom end of the clamping rod 3, the clamping rod 3 is fixed on the top surface of the blade seat 1 by means of the fixing flange 31 and the bolt, and after the above design, the clamping rod 3 can be detachably installed, the clamping rod 3 is fixed on the top surface of the blade seat 1 by means of the fixing flange 31 and the bolt, the installation stability of the clamping rod 3 is ensured, the clamping rod 3 can be disassembled and replaced, damaged clamping rods 3 can be replaced, and different clamping rods 3 can be replaced according to different installation scenes.

[0042] The components not described in detail herein are prior art.

[0043] The working principle and use process of the utility model: the hard alloy milling cutter of the utility model, when using, when installing the blade 2, first, insert the mounting block 21 into the mounting groove 11, and make the positioning protrusion 5 of the bottom surface of the mounting groove 11 embed into the positioning recess 211 of the bottom surface of the mounting block 21, then, screw the threaded screw rod 6, make the threaded screw rod 6 push the compression plate 4 to move down under the threaded screwing effect, compress the mounting block 21 from the upper part through the compression plate 4, at this time, the positioning protrusion 5 of the bottom surface of the compression plate 4 embeds into the positioning recess 211 of the top surface of the mounting block 21 to further form the limiting, namely, the stable installation of the blade 2 can be realized, the installation is convenient, and the compression direction of the compression plate 4 is perpendicular to the rotating direction of the blade 2 when working, can effectively reduce the influence of the reverse force, ensure the stability of the blade 2, also ensure the safety of long time operation;

[0044] In addition, the utility model realizes the detachable installation of the clamping rod 3, the clamping rod 3 is fixed in the top surface of the tool apron 1 by the fixed flange 31 and bolt, when guaranteeing the installation stability of the clamping rod 3, also can dismantle and replace the clamping rod 3, convenient for replacing the damaged clamping rod 3 and replacing different clamping rod 3 for different installation scenes.

[0045] Finally, it should be pointed out that: the above-mentioned only for the preferred embodiment of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A combined easy-to-assemble hard metal milling cutter, comprising a cutter holder (1), a plurality of inserts (2) fixed at equal intervals in a circumferential direction on the outer wall of the cutter holder (1), and a clamping rod (3) fixed to the top end of the cutter holder (1), an installation block (21) being fixed to the outer wall of the insert (2), characterized in that, Also include: The pressing plate (4) is embedded in the installation groove (11) of the tool holder (1), and the pressing plate (4) is located in the installation groove (11); The positioning block (5) is fixed on the inner bottom surface of the installation groove (11) and the bottom surface of the pressing plate (4), and the positioning groove (211) is processed on the installation block (21) for embedding the positioning block (5); The threaded screw rod (6) is installed on the tool holder (1) by threaded screwing, and the bottom end of the threaded screw rod (6) is rotatably connected to the pressing plate (4) by a bearing.

2. A modular, easy-to-assemble, cemented carbide milling cutter according to claim 1, characterized in that: Also include: The abutting block (41) is fixed on the bottom surface of the pressing plate (4), and the auxiliary groove (212) is processed on the installation block (21) for embedding the abutting block (41), and the inner bottom surface of the auxiliary groove (212) and the bottom surface of the abutting block (41) are matching inclined surfaces.

3. The modular, easy-to-assemble, carbide milling cutter according to claim 1, characterized in that: The positioning groove (211) is a waist-shaped groove.

4. The modular, easy-to-assemble, carbide milling cutter according to claim 1, characterized in that: Two spaced positioning blocks (5) are fixed on the inner bottom surface of the installation groove (11) and the bottom surface of the pressing plate (4).

5. The modular, easy-to-assemble, carbide milling cutter according to claim 1, characterized in that: Also include: The rubber pad (12) is adhesively fixed to the outer wall of the tool holder (1) and abuts against the blade (2).

6. The modular, easy-to-assemble, carbide milling cutter according to claim 1, characterized in that: Also include: The guide column (7) is fixed on the top surface of the pressing plate (4), and the guide column (7) penetrates the tool holder (1).

7. The modular, easy-to-assemble, carbide milling cutter according to claim 1, characterized in that: Also include: The cross slot knob (61) is fixed on the top end of the threaded screw rod (6).

8. The modular, easy-to-assemble, carbide milling cutter according to claim 1, characterized in that: Also include: The fixed flange (31) is fixed on the bottom end of the clamping rod (3), and the clamping rod (3) is fixed on the top surface of the tool holder (1) by the fixed flange (31) and the bolt.

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