Chamfering device inlaid with alloy

Abstract

The utility model discloses an alloy inlaid chamfering device which comprises a cutter body and alloy blades, the cutter body comprises a cutter head and a connecting sleeve, a cylindrical installation through hole is formed in the core portion of the cutter body, the cutter head is arranged on the front section of the cutter body, the two alloy blades which rotate and are symmetrical around the axis are arranged on the circumferential face of the cutter head, and the contours, rotating around the axis, of the alloy blades are in a circular truncated cone shape. The connecting sleeve is connected to the bottom of the tool bit, positioning screw holes perpendicular to the axis are symmetrically formed in the two sides of the connecting sleeve, and the positioning screw holes are perpendicularly communicated with the mounting through hole; the taper angle formed by the edge portions of the two alloy blades is 114 degrees, the thickness of each alloy blade is 2 mm, and the alloy blades are welded to the tool bit. The chamfering device is simple in structure, the blade portion has high hardness and abrasion resistance, cutting efficiency is high, the blade portion only needs to be replaced independently after being damaged, production cost can be reduced, and cutting quality can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining tool, concretely relates to a insert alloy chamfering device. BACKGROUND

[0002] The chamfering tool is a tool for cutting tool edge chamfering, since the tool edge has ridge and burr, using the chamfering tool can eliminate or reduce the ridge and burr, thereby improving the quality of the workpiece, and the chamfering tool is widely used in metal processing in the fields of automobile, machinery, ship and the like. The existing chamfering tool is generally made of high-speed steel, the toughness of high-speed steel is good, and the tool is not prone to breakage, but the hardness and wear resistance of high-speed steel are relatively low, and the tool needs to be replaced regularly to maintain the cutting effect. SUMMARY

[0003] In view of the above problems and technical requirements, the utility model provides a insert alloy chamfering device, the chamfering device is a separate tool bit structure, the chamfering device can be used in combination with an independent tool shank, the structure of the chamfering device is simple, the blade part has high hardness and wear resistance, the cutting efficiency is high, and only the chamfering device needs to be replaced after damage, so that the production cost can be reduced and the cutting quality can be improved.

[0004] The technical scheme of the utility model is as follows: a insert alloy chamfering device, comprising a tool body and an alloy blade, the tool body comprises a tool bit and a connecting sleeve, a cylindrical mounting through hole is formed in the core of the tool body, the tool bit is arranged at the front section of the tool body, two alloy blades that are rotationally symmetrical about the axis are arranged on the circumferential surface of the tool bit, the profile of the alloy blade rotating about the axis is a circular truncated cone, the connecting sleeve is connected to the bottom of the tool bit, the connecting sleeve is symmetrically provided with positioning screw holes perpendicular to the axis on both sides, and the positioning screw holes are vertically communicated with the mounting through hole; the blade parts of the two alloy blades form a 114-degree taper angle, the thickness of the alloy blade is 2mm, and the alloy blade is welded on the tool bit. In the scheme, the tool body can be detachably connected with a cylindrical ordinary tool shank through the connecting sleeve, the tool body can be replaced through the positioning screw holes on the connecting sleeve when the tool body is worn, the tool shank does not need to be replaced, and the production cost is saved.

[0005] Further, the tool bit is provided with two main cutting surfaces about the axis, the outer edge of the main cutting surface comprises an inclined edge section and a straight edge section, the inclined edge section extends rearward from the front end of the tool bit, the included angle between the inclined edge section and the tool body is 33 degrees, the rear end of the inclined edge section is connected with the straight edge section, the straight edge section is parallel to the axis of the tool body, and the length of the straight edge section is 4mm.

[0006] Further, the alloy blade is welded on the main cutting surface, the blade part of the alloy blade protrudes from the outer edge of the main cutting surface, and the inclination angle between the blade edge of the alloy blade and the machining surface is 20 degrees.

[0007] The alloy blade is arranged along the main cutting surface, the bevel edge section is used for chamfering the part, and a straight edge section with a length of 4mm is arranged at the rear end of the bevel edge section, so that the overall length of the alloy blade is prolonged, the rear section of the alloy blade does not participate in cutting, but can support the bevel edge section at the front end, the strength of the whole alloy blade is strengthened, and the phenomenon of tool collapse in the machining process is prevented. The inclination angle of the blade edge is set to 20 degrees, a certain balance between the sharpness and the strength of the blade edge is achieved, the blade edge has certain durability while maintaining sharp cutting, and the service life of the blade body is prolonged.

[0008] Further, the adjacent surface of the alloy blade in the rotation direction is a chip removal surface.

[0009] Further, the two sides of the tool head are provided with positioning surfaces, the bottom edges of the positioning surfaces are parallel to the alloy blade, and the positioning surfaces are adjacent to the chip removal surface.

[0010] Further, the material of the blade body is carbon structural steel, and the material of the alloy blade is tungsten-cobalt alloy. The tungsten-cobalt alloy is composed of alloys of tungsten and cobalt, has excellent wear resistance and high hardness, can improve the cutting efficiency, and maintains wear resistance and high strength, and effectively improves the cutting quality.

[0011] The utility model discloses the beneficial effect that 1) the utility model discloses the blade body can be combined and installed with the ordinary shank of cylindrical shape and use, when the blade body is abraded or damaged after long -time use, can be replaced with the blade body from the shank through the positioning screw hole, and the shank is scrapped simultaneously, and the production cost is saved, and the utilization of the blade body is more flexible, 2) the alloy blade is connected on the blade body and adopts welding, the thickness of alloy blade has 2mm, and the alloy blade is additionally provided with a straight edge section behind the bevel edge section cutting part, therefore the overall strength of the alloy blade is effectively improved, and the thickness and length can support the cutting machining of the blade during machining, and the phenomenon of tool collapse and wear is not easy to occur even under high temperature and high speed, and the service life of the blade body is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the axial section structure diagram of the alloy chamfering tool of the utility model;

[0013] Fig. 2 It is the end surface structure diagram of the alloy chamfering tool of the utility model;

[0014] Marked as in the drawing: blade body 1, installation through -hole 11, alloy blade 2, blade edge 21, tool head 3, main cutting surface 31, bevel edge section 311, straight edge section 312, chip removal surface 32, positioning surface 33, connecting sleeve 4, positioning screw hole 41. DETAILED DESCRIPTION

[0015] The application will be further described below in combination with the drawings and examples.

[0016] like Figs. 1-2 The diagram shows the alloy chamfering tool of this utility model, which includes a blade body 1 and alloy blades 2. The blade body 1 includes a blade head 3 and a connecting sleeve 4. The core of the blade body 1 has a cylindrical mounting through hole 11. The blade head 3 is located at the front of the blade body 1. Two alloy blades 2 are symmetrically arranged around an axis on the circumference of the blade head 3. The outline of the alloy blades 2 rotating around the axis is frustum-shaped. The connecting sleeve 4 is connected to the bottom of the blade head 3. The connecting sleeve 4 has symmetrical positioning screw holes 41 perpendicular to the axis on both sides. The positioning screw holes 41 are perpendicularly connected to the mounting through hole 11.

[0017] The cutting head 3 has two main cutting surfaces 31 around its axis. The outer edge of the main cutting surface 31 includes a beveled section 311 and a straight section 312. The beveled section 311 extends rearward from the front end of the cutting head, and the angle between the beveled section 311 and the radial direction of the cutting body is 33 degrees. The rear end of the beveled section 311 connects to the straight section. The straight section 312 is parallel to the axis of the cutting body and has a length of 4 mm. An alloy insert 2 is welded to the main cutting surface 31. The cutting edge of the alloy insert 2 protrudes from the outer edge of the main cutting surface, and the inclination angle between the cutting edge 21 of the alloy insert 2 and the machining surface is 20 degrees. The cone angle formed by the cutting edges of the two alloy inserts 2 is 114 degrees. The thickness of the alloy insert 2 is 2 mm, and the alloy insert 2 is welded to the cutting head 3.

[0018] The adjacent surface of the alloy blade 2 around the rotation direction is the chip removal surface 32. The cutting head 3 has positioning surfaces 33 on both sides, the bottom edge of the positioning surface 33 is parallel to the alloy blade 2, and the positioning surface 33 is adjacent to the chip removal surface 32.

[0019] The cutter body 1 is made of carbon structural steel, and the alloy insert 2 is made of tungsten-cobalt alloy. Tungsten-cobalt alloy is an alloy of tungsten and cobalt, possessing excellent wear resistance and high hardness, improving cutting efficiency while maintaining wear resistance and high strength, effectively improving cutting quality. The alloy insert 2 is positioned along the main cutting surface 31, with a beveled section 311 chamfering the part. A straight edge section 312, 4mm long at one end, is provided at the rear of the beveled section 311, extending the overall length of the alloy insert 2. Although the rear section of the alloy insert 2 does not participate in cutting, it provides support to the beveled section at the front, strengthening the overall strength of the alloy insert 2 and preventing chipping during machining. Setting the inclination angle of the cutting edge 21 to 20 degrees achieves a balance between sharpness and strength, ensuring the cutting edge maintains sharp cutting while also possessing durability, extending the service life of the cutter body 1.

[0020] The above descriptions are merely several preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations and substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An alloy chamfering tool, characterized in that: The tool includes a cutter body and alloy inserts. The cutter body includes a cutter head and a connecting sleeve. The core of the cutter body has a cylindrical mounting through hole. The cutter head is located at the front of the cutter body. Two alloy inserts are symmetrically arranged around an axis on the circumference of the cutter head. The outline of the alloy inserts rotating around the axis is frustum-shaped. The connecting sleeve is connected to the bottom of the cutter head. The connecting sleeve has symmetrical positioning screw holes perpendicular to the axis on both sides. The positioning screw holes are perpendicularly connected to the mounting through hole. The cone angle formed by the cutting edges of the two alloy inserts is 114 degrees. The thickness of the alloy inserts is 2mm. The alloy inserts are welded to the cutter head.

2. The alloy chamfering tool according to claim 1, characterized in that: The cutter head has two main cutting surfaces around its axis. The outer edge of the main cutting surface includes a beveled section and a straight section. The beveled section extends from the front end of the cutter head to the rear. The angle between the beveled section and the radial direction of the cutter body is 33 degrees. The rear end of the beveled section is connected to the straight section. The straight section is parallel to the axis of the cutter body and has a length of 4mm.

3. The alloy chamfering tool according to claim 2, characterized in that: The alloy blade is welded to the main cutting surface, and the cutting edge of the alloy blade protrudes from the outer edge of the main cutting surface. The inclination angle between the cutting edge of the alloy blade and the machining surface is 20 degrees.

4. The alloy chamfering tool according to claim 3, characterized in that: The adjacent surfaces of the alloy cutting tool around the direction of rotation are chip removal surfaces.

5. The alloy chamfering tool according to claim 4, characterized in that: The cutter head has positioning surfaces on both sides. The bottom edge of the positioning surface is parallel to the alloy blade, and the positioning surface is adjacent to the chip removal surface.

6. The alloy chamfering tool according to claim 5, characterized in that: The blade body is made of carbon structural steel, and the alloy blade is made of tungsten-cobalt alloy.

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