CN205464518U - Antidetonation extension milling cutter - Google Patents

Abstract

The utility model relates to an anti-seismic extension milling cutter, which comprises a cutting part, an extension part and an anti-vibration part. The interference fit between the cutting part and the extension part ensures the effective connection between the two parts; at the same time, after a period of cutting, when the tool wears and needs to be replaced, only the cutting part needs to be replaced, and there is no need to replace the extension part. Compared with the cutting tool in the prior art, the size of the cutting head part of the cutting tool of the utility model is shorter, the manufacturing cost is low, and the replacement cost of the user is also low. In addition, the anti-seismic part is used as the connection medium with the tool seat, and the connection part between the existing tool and the tool seat mentioned above is supported by tungsten steel, and the anti-seismic effect of the utility model is better. The invention belongs to the technical field of metal cutting equipment.

Description

An anti-seismic extended milling cutter

technical field

The utility model belongs to the technical field of metal cutting equipment, in particular to a heat-loading anti-seismic extension milling cutter.

Background technique

With the development of industry, especially in the field of metal manufacturing, equipment for cutting metal is involved, including a series of mechanical processing equipment such as milling machines, machining centers, and drilling machines. It all involves the use and design of knives. The processing components of the above-mentioned equipment are composed of two parts, the tool holder and the tool, and the tool is installed on the tool holder to complete various processing actions. The tool consists of two parts: the tool head and the tool handle. The tool head part that is in contact with the workpiece. When the tool head part is worn out, the entire tool needs to be replaced. For the user, the loss is large and the replacement cost is high. In addition, when processing deep cavities and deep holes, because the holes are deep and the shank is long, the tool receives a large lateral force during high-speed rotary cutting, and the vibration of the tool is large, which seriously affects the machining accuracy and greatly reduces the tool life. Rough, poor size, low efficiency. Therefore, it is currently necessary to design a new type of tool with high precision, high efficiency, high clamping force, high rigidity, and reduce the cost of tool replacement.

Utility model content

The technical problem to be solved by the utility model is: to provide an anti-seismic extended milling cutter which reduces vibration during processing, prolongs the service life of the cutter and can reduce the replacement cost.

The technical solution adopted by the utility model is: a cutting tool, including a cutting part, an extension part and an anti-vibration part, the cutting part and the extension part have an interference fit, and the extension part and the anti-vibration part have an interference fit; The cutting piece includes a cutting head and a connecting piece with a circular axial projection, the cutting head and the connecting piece are integrally formed; the extension piece includes a body with a circular axial projection, and the main body is designed to be through in the axial direction And it is divided into an upper through hole and a lower through hole, the lower through hole has an interference fit with the anti-seismic part, and the upper through hole has an interference fit with the connecting part of the cutting part; the anti-seismic part is a tungsten steel cylindrical rod.

The outer diameter of the cutting head is larger than that of the connecting piece.

The outer diameter of the body where the lower through hole of the extension member is located is larger than the outer diameter of the body where the upper through hole is located.

The outer surface of the main body where the through hole on the extension piece is located is inclined.

The angle corresponding to the inclination is 3°.

The anti-seismic parts are divided into an upper connector and a lower connector, the upper connector is interference fit with the lower through hole, and the outer diameter of the lower connector is the same as the outer diameter of the body where the lower through hole is located. same diameter.

The beneficial effects of the utility model are: an anti-seismic extension milling cutter, including a cutting part and an extension part, the cutting part and the extension part are interference fit, which ensures the effective connection between the two parts; after cutting for a period of time, when the cutter appears When wear and tear needs to be replaced, only the cutting parts need to be replaced, and no extension parts need to be replaced. Compared with the prior art cutting tools, the cutting head part of the cutting tool of the utility model will be shorter in size, and the manufacturing cost is low. The cost is also low.

Description of drawings

Fig. 1 is a schematic diagram of a cutting part of the present invention.

Figure 2 is a schematic diagram of the extension of the utility model.

Fig. 3 is a schematic diagram of the interference fit between the cutting part and the extension part of the utility model.

Fig. 4 is a schematic diagram of the utility model.

In the figure: 1. Cutting piece, 1.1, Cutting head, 1.2, Connecting piece, 2, Extension piece, 2.1, Upper through hole, 2.2, Lower through hole, 3, Anti-vibration piece.

detailed description

Referring to Fig. 1-Fig. 4, an anti-seismic extension milling cutter includes a cutting part 1, an extension part 2 and an anti-vibration part 3, the cutting part 1 and the extension part 2 are interference fit, and the extension part 2 and the anti-vibration part Part 3 is interference fit; the cutting part 1 includes a cutting head 1.1 and a connecting part 1.2 whose axial projection is circular, and the cutting head 1.1 and the connecting part 1.2 are integrally formed; the extension part 2 includes a shaft The projection is a circular body, the body is axially designed and divided into an upper through hole 2.1 and a lower through hole 2.2, the lower through hole 2.2 is interference fit with the anti-seismic part 3, and the connecting piece between the upper through hole 2.1 and the cutting part 1 1.2 Interference fit; the anti-seismic part 3 is a tungsten steel cylindrical rod. The anti-seismic part 3 made of tungsten steel has a very good anti-seismic effect in use, but the current industry uses ordinary steel, which has poor anti-seismic effect, and is integrally formed with the cutter head, and the cost is relatively high when replacing the cutter later. high.

Both the extension part 2 and the anti-seismic part 3 utilize the difference in thermal expansion coefficient between cemented carbide and stainless steel and the principle of thermal expansion and contraction for interference fit.

The outer diameter of the cutting head 1.1 is larger than the outer diameter of the connecting piece 1.2.

The outer diameter of the body where the lower through hole 2.2 of the extension piece 2 is located is larger than the outer diameter of the body where the upper through hole 2.1 is located.

The outer surface of the main body where the through hole 2.1 on the extension piece 2 is located is inclined.

The angle corresponding to the inclination is 3°.

The chamfer at the junction of the outer wall of the body part where the lower through hole 2.2 of the extension piece 2 is located and the outer wall of the body part where the upper through hole 2.1 is located is 45°. Tilt setting, the purpose is to be able to

The anti-shock component 3 is divided into an upper connector and a lower connector, the upper connector is interference fit with the lower through hole 2.2, and the outer diameter of the lower connector is in contact with the position of the lower through hole 2.2. The outer diameter of the body is the same.

The utility model includes a cutting part, an extension part and an anti-vibration part. The interference fit between the cutting part and the extension part ensures the effective connection between the two parts; at the same time, after cutting for a period of time, when the tool wears and needs to be replaced, only the cutting tool needs to be replaced. There is no need to replace the extension piece. Compared with the cutter of the prior art, the cutting head part of the cutter of the utility model will be shorter in the cutter designed in this way, and the manufacturing cost is low, and the replacement cost of the user is also low. In addition, the anti-seismic part is used as the connection medium with the tool seat, and the connection part between the existing tool and the tool seat mentioned above is supported by tungsten steel, and the anti-seismic effect of the utility model is better.

Claims (7)

1. An anti-seismic extension milling cutter is characterized in that: it comprises a cutting part (1), an extension part (2) and an anti-vibration part (3), and the interference fit of the cutting part (1) and the extension part (2), The extension piece (2) is interference fit with the shockproof piece (3); the cutting piece (1) includes a cutting head (1.1) and a connecting piece (1.2) whose axial projection is circular, and the cutting piece (1) The head (1.1) and the connecting piece (1.2) are integrally formed; the extension piece (2) includes a body with a circular axial projection, and the body is designed to be through in the axial direction and is divided into an upper through hole (2.1) and a lower through hole hole (2.2), the interference fit between the lower through hole (2.2) and the anti-seismic part (3), the interference fit between the upper through hole (2.1) and the connecting part (1.2) of the cutting part (1); the anti-vibration part (3) ) is a tungsten steel cylindrical rod. 2. An anti-shock extension milling cutter according to claim 1, characterized in that: the outer diameter of the cutting head (1.1) is larger than the outer diameter of the connecting piece (1.2). 3. An anti-seismic extension milling cutter according to claim 1, characterized in that: the outer diameter of the body where the lower through hole (2.2) of the extension piece (2) is located is larger than the outer diameter of the body where the upper through hole (2.1) is located path. 4. An anti-shock extension milling cutter according to claim 1, characterized in that: the outer surface of the main body where the through hole (2.1) on the extension piece (2) is located is designed to be inclined. 5. An anti-seismic extension milling cutter according to claim 4, characterized in that: the angle corresponding to the inclination is 3°. 6. An anti-seismic extension milling cutter according to claim 3, characterized in that: the outer wall of the body part where the lower through hole (2.2) of the extension piece (2) is located and the outer wall of the body part where the upper through hole (2.1) is located The chamfer at the joint is 45°. 7. An anti-seismic extension milling cutter according to claim 1, characterized in that: the anti-vibration piece (3) is divided into an upper connector and a lower connector, and the upper connector is connected to the lower connector. The hole (2.2) is interference fit, and the outer diameter of the lower connector is consistent with the outer diameter of the body where the lower through hole (2.2) is located.