Hard alloy facing cutter

Abstract

The utility model relates to the technical field of facing cutters, in particular to a hard alloy facing cutter. According to the technical scheme, the cutter comprises a blade and a cutter body, a plurality of protruding blocks are arranged on the outer surface of the cutter body in an annular array at equal intervals, a T-shaped inserting groove is formed in the front surface of each protruding block, a sliding groove is formed in the side, close to the axis of the cutter body, of the inner wall of each T-shaped inserting groove, and a sliding plate is slidably installed in each sliding groove; the side, close to the axis of the cutter body, of the outer surface of each sliding plate is fixedly connected with a spring, T-shaped inserting blocks are arranged on the outer surfaces of the blades, and the T-shaped inserting blocks are located in the T-shaped inserting grooves. When the hard alloy facing cutter is used, the blades are convenient to mount and dismount, and the blade dismounting, mounting and maintaining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a cemented carbide milling cutter head. Background Art

[0002] A milling cutter head is a tool used for milling processing. It generally consists of a cutter body, a cutter bar and a cutting blade. The cutter body is the cutter body part of the milling cutter head, usually made of cast steel, cast aluminum or special alloy materials, with strong rigidity and stability. The cutter bar is the component connecting the milling cutter head and the machine tool spindle, generally adopting two structures of straight shank type or clamping type. And the cutting blade is the most critical part of the milling cutter head, directly affecting the processing effect and quality. The common cutting blade materials include cemented carbide, high-speed steel, ceramics, etc. Different materials are suitable for different workpiece materials and processing requirements. The working principle of the milling cutter head is to use multiple cutting blades to rotate and cut on the surface of the workpiece. Since the number of cutting blades of the milling cutter head is large, each cutting blade only bears a very small cutting force, so the machining accuracy and surface quality can be guaranteed. During the processing, the milling cutter head needs to cooperate with the machine tool spindle and the feed mechanism to carry out coordinated movement to complete various precision machining tasks.

[0003] At present, during the use of the existing cemented carbide milling cutter head, the cutting blades are usually fixed on the cutter body by means of screws. Therefore, the process of installing and disassembling the cutting blades is relatively cumbersome, affecting the efficiency of installing and replacing the cutting blades. For this reason, we propose a cemented carbide milling cutter head. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cemented carbide milling cutter head, which has the advantages of being convenient for installing and disassembling the cutting blades during the use of the cemented carbide milling cutter head, improving the efficiency of disassembling, installing and maintaining the cutting blades, and solving the problem that during the use of the existing cemented carbide milling cutter head, the cutting blades that play a cutting role are usually fixed on the cutter body by means of screws, so the process of installing and disassembling the cutting blades is relatively cumbersome, affecting the efficiency of installing and replacing the cutting blades.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A cemented carbide milling cutter head, comprising a cutting blade and a cutter body. A plurality of convex blocks are equidistantly arranged in a circular array on the outer surface of the cutter body. A T-shaped slot is arranged on the front surface of each convex block. A chute is arranged on one side of the inner wall of each T-shaped slot close to the axis of the cutter body. A slide plate is slidably installed in each chute. A spring is fixedly connected to one side of the outer surface of each slide plate close to the axis of the cutter body. A T-shaped plug is arranged on the outer surface of the cutting blade, and the T-shaped plug is located inside the T-shaped slot.

[0006] Preferably, a connecting rod is fixedly connected to the position of the axis of the front surface of the cutter body.

[0007] Preferably, a connector is provided at the end of the connecting rod, and the milling cutter head is fixed to the milling machine through the connector.

[0008] Preferably, dovetail grooves are provided on the outer surface of the cutter body near each bump, and dovetail blocks are provided on the outer surface of the blade, and the dovetail blocks are located inside the dovetail grooves. The dovetail blocks are inserted into the dovetail grooves to further limit the blade, improving the stability of the blade during workpiece cutting, and thus facilitating the improvement of machining accuracy.

[0009] Preferably, sockets are provided on the outer surface of each bump, and the sockets communicate with the T-shaped slots. When installing the sliding plate, it can be directly inserted into the sliding groove through the socket. During the rapid rotation of the cutter body, the sliding plate has a tendency to slip out of the sliding groove due to the action of centrifugal force, while the limiting protrusion blocks the sliding plate to prevent it from slipping out of the sliding groove.

[0010] Preferably, a limiting protrusion is provided on the front surface of the T-shaped plug.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. By providing a cutter body, a blade, a T-shaped slot, a T-shaped plug, a sliding groove, a spring and a sliding plate, the present utility model achieves the effect of facilitating the installation and disassembly of the blade during the use of the cemented carbide milling cutter head, improving the efficiency of blade disassembly, installation and maintenance. When installing the blade, the sliding plate in the sliding groove is pushed, so that the sliding plate slides into the sliding groove. At this time, the spring is compressed. After the T-shaped plug on the blade is inserted into the T-shaped slot, the compressed spring is released and the sliding plate slides and moves to the front of the T-shaped plug to limit the T-shaped plug from sliding out of the T-shaped slot, thereby fixing the blade. When disassembling the blade, the sliding plate is also slid and made to slide into the sliding groove, and the T-shaped plug slides out of the T-shaped slot, and the blade can be disassembled.

[0013] 2. By providing a dovetail groove and a dovetail block, the present utility model achieves the effect of improving the stability of the blade after installation. During the installation of the blade, the dovetail block is inserted into the dovetail groove to further limit the blade, improving the stability of the blade during workpiece cutting, and thus facilitating the improvement of machining accuracy.

[0014] 3. By providing a socket and a limiting protrusion, the present utility model achieves the effect of facilitating the installation of the sliding plate and preventing the sliding plate from slipping out of the sliding groove at the same time. When installing the sliding plate, it can be directly inserted into the sliding groove through the socket. During the rapid rotation of the cutter body, the sliding plate has a tendency to slip out of the sliding groove due to the action of centrifugal force, while the limiting protrusion blocks the sliding plate to prevent it from slipping out of the sliding groove. Description of the Drawings

[0015] Figure 1 Schematic three-dimensional view of the present utility model;

[0016] Figure 2 Partial three-dimensional view of the tool body of the present utility model;

[0017] Figure 3 Partial three-dimensional view of the blade of the present utility model;

[0018] Figure 4 Front view structural schematic diagram of the present utility model.

[0019] Reference numerals: 1, blade; 2, tool body; 3, connecting rod; 4, connecting head; 5, convex block; 6, dovetail groove; 7, spring; 8, sliding plate; 9, T-shaped slot; 10, socket; 11, chute; 12, limiting projection; 13, T-shaped plug; 14, dovetail block. Specific embodiments

[0020] The technical solutions of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Embodiment 1

[0022] As Figures 1-4 shown, a cemented carbide milling cutter head proposed by the present utility model includes a blade 1 and a tool body 2. A connecting rod 3 is fixedly connected to the axial center position of the front surface of the tool body 2. A connecting head 4 is provided at the end of the connecting rod 3. The milling cutter head is fixedly connected to the milling machine through the connecting head 4 and drives the tool body 2 to rotate. A number of convex blocks 5 are equally spaced and arranged in a circumferential array on the outer surface of the tool body 2. The convex blocks 5 and the tool body 2 are integrally processed. A T-shaped slot 9 is provided on the front surface of each convex block 5. A chute 11 is provided on one side of the inner wall of each T-shaped slot 9 close to the axis of the tool body 2. A sliding plate 8 is slidably installed in each chute 11. A spring 7 is fixedly connected to one side of the outer surface of each sliding plate 8 close to the axis of the tool body 2. The blade 1 is made of cemented carbide material. A T-shaped plug 13 is provided on the outer surface of the blade 1, and the T-shaped plug 13 is located inside the T-shaped slot 9. A dovetail groove 6 is provided on the outer surface of the tool body 2 close to each convex block 5 position. A dovetail block 14 is provided on the outer surface of the blade 1, and the dovetail block 14 is located inside the dovetail groove 6. During the installation of the blade 1, the dovetail block 14 is inserted into the dovetail groove 6, which further limits the blade 1 and improves the stability of the blade 1 during cutting of the workpiece, thereby facilitating the improvement of the machining accuracy.

[0023] When the utility model is in use, when the blade 1 is installed, the slide plate 8 inside the sliding groove 11 is pushed, so that the slide plate 8 slides into the sliding groove 11. At this time, the spring 7 is compressed. After the T-shaped plug 13 on the blade 1 is inserted into the T-shaped slot 9, the compressed spring 7 is released and the slide plate 8 slides and moves to the front of the T-shaped plug 13, restricting the T-shaped plug 13 from sliding out of the T-shaped slot 9, thereby fixing the blade 1. When disassembling the blade 1, the slide plate 8 is also slid and made to slide into the sliding groove 11, and the T-shaped plug 13 slides out of the T-shaped slot 9, and the blade 1 can be disassembled.

[0024] Embodiment 2

[0025] As Figures 1-3 shown, a cemented carbide milling cutter head proposed by the utility model, compared with Embodiment 1, this embodiment further includes that a socket 10 is provided on the outer surface of each bump 5, the socket 10 communicates with the T-shaped slot 9, and a limiting protrusion 12 is provided on the front surface of the T-shaped plug 13.

[0026] In this embodiment, when the slide plate 8 is installed, it can be directly inserted into the sliding groove 11 through the socket 10. During the rapid rotation of the cutter body 2, the slide plate 8 has a tendency to slip out of the sliding groove 11 due to the action of centrifugal force, and the limiting protrusion 12 plays a role in blocking the slide plate 8 to prevent the slide plate 8 from slipping out of the sliding groove 11.

[0027] The above specific embodiments are only several preferred embodiments of the utility model. Based on the technical solution of the utility model and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A cemented carbide milling cutter disc, comprising a blade (1) and a cutter body (2), characterized in that: The outer surface of the blade (2) is provided with a plurality of convex blocks (5) at equal intervals in a circular array, the front surface of each convex block (5) is provided with a T-shaped slot (9), the inner wall of each T-shaped slot (9) is provided with a slide groove (11) on the side close to the axis of the blade (2), a slide plate (8) is slidably mounted inside each slide groove (11), and the outer surface of each slide plate (8) is fixedly connected with a spring (7) on the side close to the axis of the blade (2), and the outer surface of the blade (1) is provided with a T-shaped plug block (13), and the T-shaped plug block (13) is located inside the T-shaped slot (9).

2. A cemented carbide milling cutter disc according to claim 1, characterized in that: A connecting rod (3) is fixedly connected at the axial center position of the front surface of the knife body (2).

3. A cemented carbide milling cutter disc according to claim 2, characterized in that: A connecting head (4) is provided at the end of the connecting rod (3).

4. A cemented carbide milling cutter disc according to claim 1, characterized in that: The outer surface of the blade body (2) is provided with a dovetail groove (6) near each protrusion (5), and the outer surface of the blade (1) is provided with a dovetail block (14), and the dovetail block (14) is located inside the dovetail groove (6).

5. The cemented carbide milling cutter disc according to claim 1, characterized in that: The outer surface of each of the protrusions (5) is provided with a socket (10), and the socket (10) is connected to the T-shaped slot (9).

6. A cemented carbide milling cutter disc according to claim 5, characterized in that: The front surface of the T-shaped plug block (13) is provided with a limiting protrusion (12).

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