CN204053054U - Internal and external compound chamfering knife - Google Patents

Abstract

The utility model relates to an inside and outside compound chamfer sword, it includes a handle of a knife, the one end integrated into one piece of handle of a knife is connected with an interior chamfer sword and an outer chamfer sword. The utility model discloses can improve the job stabilization nature of chamfer sword, improve machining efficiency, processingquality and machining precision.

Description

Internal and external compound chamfering knife

technical field

The utility model relates to a chamfering knife structure.

Background technique

The chamfering cutter is a tool that is assembled on the milling machine, drilling machine, planer, chamfering machine and other machine tools to process the 60-degree or 90-degree chamfering and taper hole of the workpiece, and it belongs to the end milling cutter. Chamfering knife is also called chamfering device. The chamfering knife has a wide range of applications, not only suitable for chamfering of ordinary machined parts, but also suitable for chamfering and deburring of precision difficult-to-chamfer workpieces.

For the chamfering processing of the inner and outer edges of the workpiece, there are usually inner chamfering knives and outer chamfering knives. Usually, the inner and outer chamfers of the workpiece are sequentially processed with the inner chamfering knife and the outer chamfering knife, which makes the chamfering process complicated.

For example, a Chinese invention application for an adjustable internal and external chamfering knife (201310219921.2), including a tool bar connected to the drive shaft of a milling machine, two fixed bosses are arranged on the tool bar along the radial direction of the tool bar, and two fixed bosses There are movable inner and outer round knives between the tables, the blades of the inner and outer round knives are located on the same side, the inner round knife is detachably connected to one of the fixed bosses, and the outer round knife is fixed to the other The boss is detachable and fixedly connected, and the inner circle knife and the outer circle knife are connected by positioning pins. The technical solution can adjust the distance between the cutting edge of the inner circle knife and the knife edge of the outer circle knife for the inside and outside fillets of parts with different sizes.

Another example is the Chinese utility model inner and outer chamfering knife (201320821890.3), which consists of a handle, an extended handle, an extension, a blade groove, an outer chamfering edge, a cutter head, a cutting groove, a bolt, a blade, and an inner chamfering edge. One end of the extension part is connected to the knife handle through the extension handle, and the other end of the extension part is provided with a cutter head. In the insert groove, internal cooling passages are arranged inside the knife handle, the extended handle and the extension part.

The above two technical solutions basically represent the mainstream technical trend of the industry. The inner and outer chamfering tools are installed on the tool handle through bolts, so that the inner and outer chamfering can be processed at the same time in one clamping.

However, because the chamfering knife is installed by bolts, the working stability of the chamfering knife is limited, and the instability caused by the installation method will affect the processing efficiency, processing quality and processing accuracy.

Utility model content

The purpose of the utility model is to propose an internal and external compound chamfering knife, which can solve the problem of unstable work.

In order to achieve the above object, the technical scheme adopted in the utility model is as follows:

The inner and outer compound chamfering knife includes a knife handle, and one end of the knife handle is integrally formed and connected with an inner chamfering knife and an outer chamfering knife.

Preferably, there is a certain distance between the inner chamfering knife and the outer chamfering knife.

Preferably, both the inner chamfering knife and the outer chamfering knife are connected with the handle in an arc transition.

Preferably, the blades of the inner chamfering knife and the outer chamfering knife are located on the same side.

Preferably, the inner chamfering knife is a tungsten steel alloy inner chamfering knife.

Preferably, the outer chamfering knife is a tungsten steel alloy outer chamfering knife.

Preferably, the included angle between the cutting edge of the inner chamfering knife and the central axis of the handle is 70°-80°.

Preferably, the included angle between the cutting edge of the outer chamfering knife and the central axis of the handle is 40°-50°.

The utility model has the following beneficial effects:

Improve the working stability of the chamfering knife, improve the processing efficiency, processing quality and processing accuracy.

Description of drawings

Fig. 1 is the structural representation of the inner and outer composite chamfering knife of the preferred embodiment of the present invention;

Figure 2 is an enlarged view of Area A in Figure 1;

Fig. 3 is a schematic diagram of the use state of the inner and outer compound chamfering knife in a preferred embodiment of the present invention.

Reference signs: 1, knife handle; 2, inner chamfering knife; 21, knife edge; 3, outer chamfering knife; 31, knife edge; 4, circular arc; 100, workpiece.

Detailed ways

Below, the utility model will be further described in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 1 and FIG. 2 , an internal and external compound chamfering knife includes a knife handle 1 , and one end of the knife handle 1 is integrally connected with an inner chamfering knife 2 and an outer chamfering knife 3 . The inner chamfering knife 2 is at a certain distance from the outer chamfering knife 3 .

Both the inner chamfering knife 2 and the outer chamfering knife 3 are connected with the handle 1 in an arc transition. Specifically, the side where the inner chamfering knife 2 is connected to the handle 1 and the side where the outer chamfering knife 3 is connected to the handle 1 is an arc 4, and the arc 4 of the inner chamfering knife 2 is connected to the outer The circular arc 4 of the chamfering knife 3 is arranged oppositely, so that the bonding force between the inner chamfering knife 2 and the handle 1 and the outer chamfering knife 3 and the handle 1 can be strengthened, thereby further improving the bonding strength.

The cutting edge 21 of the inner chamfering knife 2 and the cutting edge 31 of the outer chamfering knife 3 are located on the same side.

In order to improve the hardness and wear resistance of the chamfering knife, both the inner chamfering knife 2 and the outer chamfering knife 3 are made of tungsten steel alloy material, thereby making the tungsten steel alloy inner chamfering knife and the tungsten steel alloy outer chamfering knife respectively Knife, which greatly improves the life of the tool, but also improves the processing quality and precision.

The included angle between the cutting edge 21 of the inner chamfering knife 2 and the central axis of the knife handle 1 in this embodiment is 74.7°±0.3°. The included angle between the cutting edge 31 of the outer chamfering knife 3 and the central axis of the handle 1 is 45.0°±0.3°.

As shown in FIG. 3 , it is a schematic diagram of processing the workpiece 100 in this embodiment.

For those skilled in the art, various other corresponding changes and modifications can be made according to the technical solutions and ideas described above, and all these changes and modifications should fall within the protection scope of the claims of the present invention .

Claims (7)

1. inside and outside, compound chamfers cutter, is characterized in that, comprises a handle of a knife, and one end of described handle of a knife is one-body molded is connected with rose reamer and an outer rose reamer in one; Interior rose reamer is all connected with handle of a knife arc transition with outer rose reamer, and the side that interior rose reamer is connected with handle of a knife and the side that outer rose reamer is connected with handle of a knife are a circular arc, and the circular arc of interior rose reamer and the circular arc of outer rose reamer are oppositely arranged.

2. inside and outside compound chamfers cutter as claimed in claim 1, it is characterized in that, interior rose reamer and outer rose reamer are in a distance.

3. inside and outside compound chamfers cutter as claimed in claim 1, it is characterized in that, the blade of interior rose reamer and the blade of outer rose reamer are positioned at the same side.

4. inside and outside compound chamfers cutter as claimed in claim 1, it is characterized in that, interior rose reamer is rose reamer in tungsten steel alloy.

5. inside and outside compound chamfers cutter as claimed in claim 1, is characterized in that, outer rose reamer is the outer rose reamer of tungsten steel alloy.

6. inside and outside compound chamfers cutter as claimed in claim 1, it is characterized in that, the angle of the blade of interior rose reamer and the axis of handle of a knife is 70 °-80 °.

7. inside and outside compound chamfers cutter as claimed in claim 1, it is characterized in that, the angle of the blade of outer rose reamer and the axis of handle of a knife is 40 °-50 °.