CN107552816A - High temperature alloy finishes efficient chip breaking rhombus turning insert - Google Patents

Abstract

The utility model relates to a high-efficiency chip-breaking rhombic turning blade for high-temperature alloy finishing, which belongs to the technical field of high-temperature alloy processing. The invention aims to solve the problems of large cutting force, high cutting temperature, difficult chip breaking, difficult chip removal, serious blade wear and damage, short service life and low cutting efficiency in the finishing process of superalloy. The horizontal section of the main body of the turning blade is diamond-shaped, and the center of the front area of the main body of the turning blade is provided with a fastening screw hole. The corners are all arc transition edges; the front middle area of the main body of the turning blade is provided with a diamond-shaped boss, and the outer sides of the four sides of the diamond-shaped boss are respectively provided with sawtooth-shaped chip guide walls, and the gap between the sawtooth-shaped chip guide walls and the rake face Chip pockets are formed, drop-shaped projections are provided on the rake face, and arrow-shaped strengthening projections are respectively provided on the front of the turning insert body near the arc transition edge of each tool tip. The invention is used in high temperature alloy finishing.

Description

High-efficiency chip-breaking diamond-shaped turning inserts for high-temperature alloy finishing

technical field

The invention relates to a high-temperature alloy finishing turning blade, which belongs to the technical field of high-temperature alloy processing.

Background technique

Nickel-based superalloys are widely used in aerospace engines, nuclear power plants and gas turbine hot-end parts because they still have high fatigue strength, yield strength, and tensile strength metal materials under high temperature conditions. It plays a vital role in the development of aerospace, nuclear power, shipbuilding, petrochemical and other industries. However, nickel-based superalloys are typical difficult-to-machine materials, which have low thermal conductivity and serious work hardening. In the finishing process of existing turning inserts, there are large cutting force, high cutting temperature, difficult chip breaking, difficult chip removal, and Severe wear, short service life and other problems make it difficult to guarantee the machining accuracy and surface quality, and it is difficult to meet high processing requirements; and the processing efficiency is low.

Contents of the invention

The purpose of the present invention is to solve the problems of large cutting force, high cutting temperature, difficult chip breaking, difficult chip removal, serious blade wear and damage, short service life and low cutting efficiency in the finishing process of superalloys, and to provide a High-temperature alloy finishing high-efficiency chip breaking diamond-shaped turning inserts.

The invention designs a variety of chip breaking and strengthening structures, so that it is easy to roll, break and remove chips during processing, and can effectively improve the strength and service life of the blade, reduce frequent tool changing time, and effectively improve productivity. .

For realizing above-mentioned object, the technical scheme that the present invention takes is:

The high-efficiency high-efficiency chip-breaking diamond-shaped turning blade for high-temperature alloy finishing of the present invention includes a turning blade body whose horizontal cross-section is diamond-shaped, and the center of the front area of the turning blade body is provided with a tight hole that runs through the rear support surface 9 of the turning blade body. Fix the screw hole 5, the front of the main body of the turning blade near the edge is the rake face, the main body of the turning blade is provided with a straight cutting edge 2, and the four corners of the main body of the turning blade are arc transition edges 1;

The front middle area of the main body of the turning blade is provided with a diamond-shaped boss 4, and the outer sides of the four sides of the diamond-shaped boss 4 are respectively provided with a sawtooth-shaped chip guide wall 7, and the saw-tooth-shaped chip guide wall 7 is connected with the front knife. A chip pocket 6 is formed between the faces, a drop-shaped protrusion 3 is provided on the rake face, and an arrow-shaped strengthening protrusion 8 is respectively provided near the arc transition edge 1 of each cutting edge in front of the main body of the turning blade.

The beneficial effect of the present invention relative to prior art is:

1, the cutting edge of the turning blade main body of the present invention is designed as a straight cutting edge with a radius of 20mm rounding, so that the turning blade is designed to have sufficient sharpness, and can obtain better machining accuracy in finishing machining, and obtain better At the same time, it can also enhance the strength of the cutting edge, which is beneficial to improve the stability of the turning blade during the finishing process, and achieve the effect of efficient processing.

2. The four corners of the diamond-shaped turning blade are connected by a transition edge with a radius of 0.4 mm, which can relieve the stress concentration of the tool tip, improve the strength, impact resistance and durability of the tool tip, and further improve the quality of the tool during finishing machining. The processing accuracy in the process can obtain better processing quality; at the same time, it can also play a role in increasing the service life of the tool.

3. The rhombic turning blade of the present invention is respectively designed with arrow-shaped strengthening protrusions near the four knife tip arc transition edges, which can increase the strength of the turning blade, enhance the impact resistance of the turning blade, and improve the service life of the tool; at the same time, the The side of the arrow-shaped reinforced protrusion is designed with a slope of 20°, which can guide the curling and breaking of chips, which is conducive to the smooth progress of cutting processing, so that better processing quality and processing accuracy can be obtained in finishing processing.

4. The rhombic turning blade of the present invention is designed with a drop-shaped protrusion on the rake face, which can relieve the stress concentration of the tip, improve the strength, impact resistance and durability of the tip, and increase the service life of the tool. Function; at the same time, it can also improve the machining accuracy in finishing machining and obtain better machining quality.

5. The sawtooth-shaped chip guide wall designed by the diamond-shaped turning blade of the present invention has a slope of 30°, which can play an additional deformation role on the chips, make the chips more likely to curl and break, and enable the chips to be discharged smoothly. Take away the cutting heat, thereby reducing the cutting temperature.

6. The diamond-shaped boss designed by the diamond-shaped turning blade of the present invention is located in the front middle region of the turning blade body, and the four outer surfaces of the diamond-shaped boss all have a slope of 40°, so that the fastening screw hole and the sawtooth-shaped chip guide wall, turning The stepped transition between the rake face of the insert and the straight cutting edge can effectively avoid the stress concentration of the turning insert during cutting, increase the strength of the main body of the turning insert, and also increase the service life of the tool.

7. The chip pocket designed by the rhombic turning blade of the present invention is located between the rake face and the sawtooth chip guide wall, which helps to improve the ability of the turning blade to hold chips; at the same time, a small amount of cutting fluid can also be stored to reduce the cutting process. The effect of cutting temperature.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is a partial enlarged view of C in Fig. 1;

Fig. 5 is the bottom view of Fig. 1;

FIG. 6 is a rear view of FIG. 1 .

The names and labels of the components in the figure are as follows:

1- arc transition edge of tool tip; 2- straight cutting edge; 3- drop-shaped protrusion; 4- diamond-shaped boss; 5- fastening screw hole; 6- chip groove; -Arrow-shaped reinforced protrusion; 9-Rear support surface.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

Specific Embodiment 1: As shown in Figures 1 to 6, this embodiment discloses a diamond-shaped turning blade with high-efficiency chip breaking for high-temperature alloy finishing, including a turning blade body. The horizontal section of the turning blade body is diamond-shaped. The center of the front area of the blade body is provided with a fastening screw hole 5 that runs through the rear support surface 9 of the blade body. The front edge of the blade body is the rake face. All corners are arc transition edge 1;

The front middle area of the main body of the turning blade is provided with a diamond-shaped boss 4, and the outer sides of the four sides of the diamond-shaped boss 4 are respectively provided with a sawtooth-shaped chip guide wall 7, and the saw-tooth-shaped chip guide wall 7 is connected with the front knife. A chip pocket 6 is formed between the faces, a drop-shaped protrusion 3 is provided on the rake face, and an arrow-shaped strengthening protrusion 8 is respectively provided near the arc transition edge 1 of each cutting edge in front of the main body of the turning blade.

Specific embodiment two: as shown in Fig. 1, Fig. 4 and Fig. 5, this embodiment is a further limitation of specific embodiment one, the straight cutting edge 2 has a rounding radius of 20mm, the knife The arc radius of the pointed arc transition edge 1 is 0.4 mm, the rake angle of the turning blade is 6° to 8°, the back angle of the turning blade is 7° to 9°, and the blade inclination angle is 0°. This design enables the turning blade to have a higher strength in finishing, which can reduce the wear of the turning blade and improve the service life of the tool; at the same time, the turning blade has enough sharpness to obtain better results in finishing. The processing accuracy is better and the processing quality is better.

Specific embodiment 3: As shown in Fig. 1 and Fig. 4 , this embodiment is a further limitation of specific embodiment 1, and the outer peripheral side of each arrow-shaped reinforcing protrusion 8 is provided with a slope of 20°.

Embodiment 4: As shown in FIG. 1 , this embodiment is a further limitation of Embodiment 1. The four outer surfaces of the diamond-shaped boss 4 are all provided with a slope of 40°.

Embodiment 5: As shown in Figure 1, this embodiment is a further description of Embodiment 1, 2, 3 or 4, and the four zigzag chip guide walls 7 are all provided with a slope of 30° .

The above embodiments show that the present invention solves the problems in the finishing process of superalloys such as difficult chip breaking, difficult chip removal, difficulty in ensuring machining accuracy and surface quality, serious wear and damage of turning blades, short service life, large cutting force, and high cutting temperature. There is a good solution, so the invention can actively promote the finishing of high-temperature alloys (especially nickel-based high-temperature alloys).

Claims (5)

1. a kind of high temperature alloy finishes efficient chip breaking rhombus turning insert, including turning insert main body, described turning insert main body Horizontal cross-section is rhombus, is provided with turning insert main body front region center and runs through turning insert main body rear support face（9）Fastening spiral shell Nail（5）, close to edge it is rake face before turning insert main body, turning insert main body is surrounded by linear cutting edge（2）, car Four angles of vane body are Tool nose arc transition edge（1）；

It is characterized in that：Turning insert main body forward, central part region is provided with rhombus boss（4）, described rhombus boss（4）Four sides Zigzag dust lead wall is respectively equipped with the outside of face（7）, described zigzag dust lead wall（7）Formed and held between described rake face Consider groove to be worth doing（6）, it is raised that rake face is provided with water-drop-shaped（3）, it is located at each Tool nose arc transition edge before turning insert main body（1）Near It is respectively equipped with flechette-type and strengthens projection（8）.

2. high temperature alloy according to claim 1 finishes efficient chip breaking rhombus turning insert, it is characterised in that：Described is straight Line cutting edge（2）With the rounding that radius is 20mm, described Tool nose arc transition edge（1）Arc radius be 0.4mm.

3. high temperature alloy according to claim 1 finishes efficient chip breaking rhombus turning insert, it is characterised in that：It is each described Flechette-type strengthen it is raised（8）Circumferential lateral surface be provided with 20 ° of gradient.

4. high temperature alloy according to claim 1 finishes efficient chip breaking rhombus turning insert, it is characterised in that：Described water chestnut Shape boss（4）Four lateral surfaces be equipped with 40 ° of gradient.

5. the high temperature alloy according to claim 1,2,3 or 4 finishes efficient chip breaking rhombus turning insert, it is characterised in that： Zigzag dust lead wall described in four（7）It is equipped with 30 ° of gradient.