CN203863040U - Indexable turning tool with variable tool cutting edge angle - Google Patents

Abstract

The utility model discloses an indexable turning tool with a variable main deflection angle, which includes a tool handle, a blade, and a knife pad, a locking screw and a pressure plate. The blade mounting part where the blade is placed, and more than two knife shim screw holes matching the locking screws, the knife shim is protrudingly provided with a cylindrical guide post, and the circle centers of the knife shim screw holes are distributed in the direction of the guide post On the same arc where the centerline of the center line is the center of the circle; one end of the cutter body is sunken and provided with a shim installation part for placing a shim, and the shim installation part is provided with a limit blind hole matching the guide column and The screw holes of the handle of a knife corresponding to the screw holes of the knife pad one by one, the pressure plate is fixed by the pressure plate screw and the screw hole of the handle of a knife, one end of which is pressed tightly on the blade, and the other end is pressed tightly on the handle of a knife 1 . The utility model realizes the purpose of adjusting the main deflection angle of the blade by adjusting the angle of the knife shim, which is convenient to operate, reduces the clamping time, improves the working efficiency, and saves the tool cost.

Description

An indexable turning tool with variable leading angle

technical field

The utility model relates to an indexable turning tool, which is mainly used in the cutting field, in particular to an indexable turning tool holder with a variable main deflection angle.

Background technique

Turning tool is one of the most widely used tools in cutting processing, and it is also the basis for learning and analyzing various tools. Turning tools are used on various lathes to process outer circles, inner holes, end faces, threads, grooves, etc. According to the structure, turning tools can be divided into integral turning tools, welding turning tools, machine clamp turning tools, indexable turning tools and forming turning tools. Among them, the application of indexable turning tools is becoming more and more extensive, and the proportion of turning tools is gradually increasing.

The indexable turning tool is formed by mechanically clamping the indexable carbide insert on the tool holder. The insert has geometric parameters for cutting and more than three cutting edges for indexing. When one cutting edge is worn out, loosen the clamping mechanism, index the blade to the other cutting edge and then clamp it to start cutting. When all the cutting edges are worn out, they can be removed and replaced with new similar blades . The indexable turning tool has the advantages of changing the main deflection angle and changing the blade, which can reduce the sharpening cost of the tool and improve the cutting efficiency. According to different clamping mechanisms, indexable turning tools can be divided into platen type, eccentric type, lever type and wedge type.

The main cutting angles of turning tools include rake angle, relief angle, entering angle and edge inclination angle.

The size of the main declination will affect the cutting force, tool life and surface accuracy of the machined parts during the cutting process. Therefore, it is necessary to use different cutting angle parameters during production to obtain the best workpiece quality and reduce tool wear.

The structure of the existing indexable turning tools is relatively mature, but there are still shortcomings in use: if the main deflection angle of the current indexable turning tools is to be changed, it can only be realized by changing the handle, which will affect the work Efficiency also increases costs.

Utility model content

In view of the above situation, the utility model proposes an indexable turning tool with a variable lead angle, which can change the lead angle in place to improve efficiency and save costs.

The technical scheme that the utility model solves its technical problem is:

An indexable turning tool with a variable lead angle, including a handle, a blade, and a shim, a locking screw, and a pressure plate. part, and more than two screw holes of the shim matching the locking screws, the shim is protrudingly provided with a cylindrical guide post, and the centers of the screw holes of the shim are distributed with the center line of the guide post as the center of the circle. On the same arc; one end of the cutter body is sunken with a shim installation part for placing a shim, and the shim installation part is provided with a limit blind hole matching the guide column and a screw hole for the shim One-to-one correspondence with the screw holes of the handle of a knife, the pressure plate is fixed by the screw of the pressure plate and the screw hole of the pressure plate of the handle of a knife, one end of which is pressed tightly on the blade, and the other end is pressed tightly on the handle of a knife 1 .

Further, the shim is fan-shaped with an included angle of 90 degrees.

The beneficial effects of the utility model are: by setting a rotatable knife shim, the purpose of adjusting the angle of the knife shim is realized by adjusting the angle of the knife shim, the operation is convenient, the clamping time is reduced, the work efficiency is improved, and the tool cost is saved.

Description of drawings

Fig. 1 is a schematic diagram of an explosion structure of an embodiment of the utility model.

Figure 2 is a schematic diagram of the structure of the shim.

Figure 3 is a schematic diagram of the structure of the handle.

Figure 4 is a schematic diagram of the overall structure of the turning tool when the main deflection angle is 60 degrees.

Figure 5 is a schematic diagram of the overall structure of the turning tool when the main deflection angle is 75 degrees.

Figure 6 is a schematic diagram of the overall structure of the turning tool when the main deflection angle is 90 degrees.

1-knife handle, 11-knife handle screw hole, 12-limit blind hole, 13-tool shim installation part, 14-pressure plate screw hole, 2-pressure plate, 3-pressure plate screw, 4-tool shim, 41-blade installation Department, 42-guide column, 43-knife shim screw hole, 5-blade, 6-locking screw.

Detailed ways

The purpose of the utility model will be further described in detail below in conjunction with the accompanying drawings and specific examples. The examples cannot be repeated here one by one, but the implementation of the utility model is not therefore limited to the following examples.

As shown in Figures 1 to 3, an indexable turning tool with a variable lead angle includes a handle 1, a blade 5, a shim 4, a locking screw 6 and a pressure plate 2, and the shim 4 is The included angle is fan-shaped at 90 degrees, and the upper end surface is sunken with a blade mounting part 41 for placing the blade 5, and three shim screw holes 43 matching the locking screws 6, and the shim 4 is protrudingly set There is a cylindrical guide post 42, and the center of circle of said cutter shim screw hole 43 is distributed on the same arc with the centerline of the guide post 42 as the center of the circle; The shim installation part 13, the shim installation part 13 is provided with the limit blind hole 12 matching with the guide column 42 and the handle screw hole 11 corresponding to the shim screw hole 43 one by one, and the pressure plate 2 passes through the pressure plate Screw 3 and the pressing plate screw hole of handle of a knife 1 are fixed, and its one end is pressed on blade 5, and the other end is pressed on handle of a knife 1 tightly.

Before the turning tool works, place the shim 4 on the shim installation part 13, and insert the guide post 42 into the limit blind hole 12, then adjust the angle of the shim 4 with the guide post 42 as the rotation center, so that the blade 5 can obtain the predetermined Then screw the locking screw 6 into the corresponding screw hole 43 of the tool shim and the screw hole 11 of the tool handle, lock the tool shim 4 and the tool handle 1, put it into the blade 5, and press the pressure plate 2 on the blade 5 Then use the pressure plate screw 3 to press the pressure plate 2 on the tool handle 1. Through adjustment, this embodiment can obtain three kinds of indexable turning tools with different leading angles, that is, the leading angle shown in Figure 4 is The indexable turning tool at 60 degrees, the indexable turning tool when the leading angle is 75 degrees as shown in Figure 5, and the indexable turning tool when the leading angle is 90 degrees as shown in Figure 6.

The above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (2)

1. An indexable turning tool with a variable entering angle, comprising a handle (1), a blade (5), characterized in that it also includes a shim (4), a locking screw (6) and a pressure plate (2 ), the knife shim (4) is fan-shaped, and the upper end surface is sunken to be provided with a blade mounting part (41) for placing the blade (5), and more than two knife shim screw holes matching the locking screw (6) (43), the cutter shim (4) is protrudingly provided with a cylindrical guide column (42), and the center of circle of the screw hole (43) of the cutter shim is distributed on the same center line of the guide column (42) as the center of the circle. On the arc; one end of the cutter body (1) is sunken to be provided with a shim installation part (13) for placing a shim (4), and the shim installation part (13) is provided with a guide column (42) The matched limit blind hole (12) and the tool handle screw hole (11) corresponding to the tool shim screw hole (43) one by one, the pressure plate (2) passes the pressure plate screw (3) and the pressure plate of the knife handle (1) The screw holes are fixed, and one end is pressed against the blade (5), and the other end is pressed against the handle of a knife (1). 2. According to claim 1, characterized in that: the said shim (4) is fan-shaped with an included angle of 90 degrees.