CN209849900U

CN209849900U - PCBN blade and plane bulb grooving PCBN cutter

Info

Publication number: CN209849900U
Application number: CN201920080025.5U
Authority: CN
Inventors: 陶宏均; 李�杰; 孙睿; 张亚峰
Original assignee: Central Group Ding Ding Technology Co Ltd
Current assignee: Central Group Ding Ding Technology Co Ltd
Priority date: 2019-01-18
Filing date: 2019-01-18
Publication date: 2019-12-27
Anticipated expiration: 2029-01-18

Abstract

The utility model discloses a PCBN blade and plane bulb grooving PCBN cutter. The blade edge profile of PCBN blade is the preferred arc. The plane ball head grooving PCBN cutter comprises a cutter base body and a blade, wherein the blade is fixed at the end part of the cutter base body, and the blade is a PCBN blade. The utility model discloses the cutter base member has and compresses tightly plane and V type location bottom surface. The upper pressing plane is convenient to press. The V-shaped positioning bottom surface can automatically align the center, so that the cutter does not deviate from the center line, and the quick positioning of the cutter can be realized. The outer contour of the PCBN blade is in a U-arc shape, and the contact surface between a cutter and a workpiece can be effectively reduced when the side surface of the workpiece is subjected to grooving, so that the cutting force is reduced, the cutter vibration is avoided, the service life of the cutter is prolonged, and the machining precision of the workpiece is improved.

Description

PCBN blade and plane bulb grooving PCBN cutter

Technical Field

The utility model relates to a metal cutting tool technical field especially relates to a PCBN blade and plane bulb grooving PCBN cutter.

Background

Metal cutting tools are widely used in machining factories, and requirements for the tools are higher and higher along with the construction and use of standardized and intelligent production lines. In order to improve the production efficiency, reduce the tool changing time and improve the repeated positioning precision of the tool, the machine clamp forming tool is popularized. In the groove cutting process of finish machining of cast iron or quenched steel workpieces, a manual grinding cutter is originally used, in order to improve the stability of product quality, the cutter is required to be wear-resistant and long in service life, the cutter changing frequency is reduced, and then a metal high-speed cutting cutter PCBN cutter is used.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior technical problem, the utility model provides a PCBN blade, the cutting edge part profile of PCBN blade is excellent arc.

Preferably, the central angle of the major arc is no greater than 280 degrees.

Preferably, the radius of the major arc is 1 ~ 3 mm.

A plane ball head grooving PCBN cutter comprises a cutter base body and a blade, wherein the blade is fixed at the end part of the cutter base body, and the blade is any one of the PCBN blade.

Preferably, both ends of the cutter base body are provided with PCBN blades.

Preferably, the cutter base body is provided with an upper pressing plane and a V-shaped positioning bottom surface; two ends of the cutter base body are cutting ends; the shape of the cutting end matches that of a PCBN blade.

Preferably, the included angle of the V-shaped positioning bottom surface is 120 degrees.

The utility model discloses the cutter base member has and compresses tightly plane and V type location bottom surface. The upper pressing plane is convenient to press. The V-shaped positioning bottom surface can automatically align the center, so that the cutter does not deviate from the center line, and the quick positioning of the cutter can be realized. The outer contour of the PCBN blade is in a U-arc shape, and the contact surface between a cutter and a workpiece can be effectively reduced when the side surface of the workpiece is subjected to grooving, so that the cutting force is reduced, the cutter vibration is avoided, the service life of the cutter is prolonged, and the machining precision of the workpiece is improved.

Drawings

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

Fig. 2 is a left side view of the present invention.

Fig. 3 is a plan view of the present invention.

In the figure: 1 cutter basal body, 2PCBN blade, 3 upper compaction planes, 4V type location bottom surfaces, 5 cutting ends.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

Referring to fig. 1-3, a plane ball head grooving PCBN cutter comprises a cutter base body 1 and a cutter blade. The tool base body 1 is a cemented carbide material. The blade is a PCBN blade 2. The blade edge profile of the PCBN blade 2 is in a preferred arc shape. The central angle of the major arc is 266.1 degrees. The radius of the major arc is 2.5 mm. The tool base body 1 has an upper pressing plane 3 and a V-shaped positioning bottom surface 4. The center line of the V-shaped positioning bottom surface 4 is superposed with the center line of the cutter base body 1. The included angle of the V-shaped positioning bottom surface is 120 degrees. The two ends of the tool base body 1 are cutting ends 5. The cutting end 5 is shaped to match the PCBN insert 2. Both cutting ends 5 are fixedly provided with PCBN blades.

The manufacturing process of the plane ball head grooving PCBN cutter is as follows:

1. grinding the tool base body 1: grinding a cutter base body 1 on a special grinding machine, wherein the upper end surface is required to be a plane, the bottom surface is required to be a V-shaped 120-degree positioning surface, and the distance tolerance from the upper end surface to the bottom surface is controlled within 0.05 mm;

2. wire cutting: on a hard alloy cutter base body 1, cutting a layer of thin sheet with the thickness of 1-2 mm on the arc-shaped upper end surfaces of two ends of the cutter base body 1 by adopting a wire cut electrical discharge machine, carrying out surface treatment on a cut cutter blank, and cleaning;

3. laser cutting: cutting the PCBN composite sheet into a shape with a size corresponding to that of the cutter matrix 1 by using a laser cutting machine to manufacture a PCBN blade 2;

4. respectively coating vacuum brazing pastes on the cutting part of the cutter substrate 1 and the welding surface of the PCBN blade 2, bonding the cutter substrate 1 coated with the brazing pastes and the PCBN blade 2 together, firstly placing the cutter substrate 1 and the PCBN blade 2 in an oven, heating to 200 ℃, preserving heat for 15 minutes, then placing the cutter substrate in a vacuum welding furnace, heating to 500 ℃ in 0 ~ 10 minutes, preserving heat for 5 minutes at 500 ℃, heating to 885 ℃ in 15 ~ 30 minutes, preserving heat for 10 minutes at 885 ℃, cooling to 480 ℃ in 40 ~ 55 minutes, preserving heat for 20 minutes at 480 ℃, and then cooling to normal temperature along with the furnace and discharging;

5. grinding process: and then grinding the cutter on a grinding machine to the required size and circular arc, and finally treating the cutting edge.

Claims

1. The PCBN blade is characterized in that the edge part of the PCBN blade is in a major arc shape, the central angle of the major arc shape is not more than 280 degrees, and the radius of the major arc shape is 1 ~ 3 mm.

2. The utility model provides a plane bulb grooving PCBN cutter, includes cutter base member and blade, and the tip at the cutter base member is fixed to the blade, its characterized in that: the insert is the PCBN insert as recited in claim 1, both ends of the cutter substrate are provided with PCBN inserts, and the cutter substrate is provided with an upper pressing plane and a V-shaped positioning bottom surface; two ends of the cutter base body are cutting ends; the shape of cutting end and PCBN blade phase-match, the contained angle of V type location bottom surface is 120.