CN218855699U

CN218855699U - Lead to groove processing and bore milling cutter

Info

Publication number: CN218855699U
Application number: CN202223455222.1U
Authority: CN
Inventors: 何上林; 黄平
Original assignee: Foshan Xinrui Cutting Tools Manufacturing Co ltd
Current assignee: Foshan Xinrui Cutting Tools Manufacturing Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-04-14
Anticipated expiration: 2032-12-23

Abstract

The utility model relates to a numerical control machine tooling cutter technical field discloses a logical groove processing bores milling cutter, including handle of a knife and integrative tool bit portion of locating the handle of a knife anterior, the front portion of tool bit portion has the drilling tool section that the external diameter is D1, the rear portion of drilling tool section has the milling tool section that the external diameter is D2, D2 > D1, the front end of drilling tool section is equipped with the drill point, the lateral part parallel and level of drill point is inlayed on its surface and is equipped with first PCD blade; the continuous drilling cutter section and the milling cutter section on the surface of the cutter head part are provided with spiral cutting edges, a chip removing groove is formed between the spiral cutting edges, and a second PCD blade is embedded at the front end of the spiral cutting edge, which is correspondingly positioned on the milling cutter section; the drilling and milling cutter is particularly suitable for processing a through groove with high precision requirement, the drilling and milling processing service life is long, the drilling and milling processing precision is high, and meanwhile, the drilling and milling cutter can only use the drilling cutter section at the front part of the cutter head part to perform drilling processing operation when in use, namely, the drilling cutter can also be used as a drill bit independently.

Description

Lead to groove processing and bore milling cutter

Technical Field

The utility model belongs to the technical field of the numerical control machine tool processing cutter, concretely relates to brill mills combination cutting tool.

Background

The functions of the traditional conventional machining tool are single, and the milling cutter and the drill bit are two independent tools. In the processing process of the through groove of the workpiece, a drill bit is used for drilling a hole on the workpiece to determine a groove position, then a milling cutter is replaced to mill a groove body, and the machine needs to be stopped for cutter changing in the processing process of the groove body, so that the processing operation efficiency is influenced.

The drilling and milling composite cutter has the functions of drilling and milling, for example, the drilling and milling composite cutter disclosed in the Chinese utility model patent (publication number CN 217095852) is provided with a drill point at the center of the front end of the cutter, and a milling cutter is arranged at the side part of the drill point, the drill point and the milling cutter are integrated, the drill point is firstly rotated and punched on the surface of a metal workpiece to find a processing position during working, and the drilling and milling integrated processing is realized along with the penetration of the drill point into the milling cutter.

In the process of processing the through groove, the drilling and milling compound cutter for directly processing the drill point and the milling cutter at the front end of the threaded rod body has the following defects: 1. the threaded rod of the machining cutter is usually made of conventional alloy steel, so that the service lives of a drill tip and a milling cutter are limited and the drill tip and the milling cutter are easy to damage; 2. the precision of drilling and milling is low, and the requirement of processing a through groove with high precision on the inner wall is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lead to groove processing and bore milling cutter, bore and mill processing long service life and bore and mill the machining precision height to prior art not enough, the utility model aims at providing a.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a drilling and milling cutter for machining a through groove comprises a cutter handle and a cutter head part integrally arranged at the front part of the cutter handle, wherein a drilling cutter section with the outer diameter of D1 is arranged at the front part of the cutter head part, a milling cutter section with the outer diameter of D2 is arranged at the rear part of the drilling cutter section, D2 is more than D1, a drill point is arranged at the front end of the drilling cutter section, and a first PCD blade is embedded on the outer surface of the drill point and is flush with the side part of the drill point; the continuous drilling section and the milling section on the surface of the cutter head part are provided with helical cutting edges, chip removal grooves are formed between the helical cutting edges, and a second PCD blade is embedded at the front end of the helical cutting edge, which is correspondingly positioned at the milling section.

When the through groove with high precision requirement is machined, a machining position is firstly machined through a drill point positioning groove at the front end of the drilling cutter section, a hole position is pre-drilled through rotation of the drilling cutter section, and the drill point hardness of the drill point can be improved through arrangement of the first PCD blade during drilling, so that the service life of the drill point is prolonged; after the hole body is drilled, the cutter head part continues to rotate and extend into the hole body, the second PCD blade is advanced to mill and ream the hole, and a through groove body is milled and processed in a side milling mode along with the depth of the milling cutter section; the arrangement of the second PCD blade can enhance the efficiency of the milling cutter section which goes deep into the milling and reaming in advance, can also enhance the overall service life of the cutting edge of the milling part, and has higher precision and smoothness of the inner wall surface of the through groove body milled out from the side.

The utility model discloses following beneficial effect has:

the utility model discloses lead to groove processing and bore milling cutter is particularly useful for processing the logical groove that the high accuracy required, and the drill point constant head tank that passes through drilling tool section front end adds the station earlier to rotate through drilling tool section and drill out the hole site in advance, and the tool bit portion continues to rotate and stretches into after the hole body drills out, and the reaming is deeply milled in advance by the second PCD blade, and along with milling tool section's deepening again with the side milling mode milling out the logical groove cell body, drilling and milling processing long service life and drilling and milling machining precision are high; in addition, when the drilling and milling cutter is used, the drilling and milling cutter can only use the drilling section at the front part of the cutter head part for drilling, namely can be used as a drill bit independently.

Drawings

Fig. 1 is the structure diagram of the milling cutter is drilled in the processing of the through groove of the utility model.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, so as to more clearly understand the technical idea claimed in the present invention.

The drilling and milling cutter with the through grooves as shown in fig. 1 comprises a cutter handle 1 and a cutter head part 2 integrally arranged on the front part of the cutter handle 1, wherein the cutter handle 1 and the cutter head part 2 are made of alloy steel materials, a drilling cutter section 21 with the outer diameter of D1 is arranged on the front part of the cutter head part 2, a milling cutter section 22 with the outer diameter of D2 is arranged on the rear part of the drilling cutter section 21, and D2 is larger than D1. The drilling section 21 is provided at its forward end with a drill tip 23 and has a first PCD insert 24 mounted flush with its outer surface at the side of the drill tip 23. In this embodiment, an insertion groove 28 is formed in the tip end side portion of the drill tip 23, the first PCD tip 24 is welded and inserted into the insertion groove 28, and the outer edge 241 of the first PCD tip 24 is flush with the drill pin edge 231 of the drill tip 23.

When the through groove with high precision requirement is machined, a machining position is firstly machined through a positioning groove of the drill point 23 at the front end of the drilling cutter section 21, a hole position is pre-drilled through rotation of the drilling cutter section 21, and the drill pin hardness of the drill point 23 can be improved through arrangement of the first PCD blade 24 during drilling, so that the service life of the drill point is prolonged.

The continuous drilling section 21 and the milling section 22 on the surface of the tool head 2 are provided with helical cutting edges 25, wherein the sharp edges 251 on the side parts of the helical cutting edges 25 are arranged corresponding to the rotating direction of the tool head 2 and extend to the outer wall of the drill tip 23, so that the continuity of the sharp edges 251 is maintained. A chip groove 26 is formed between the spiral cutting edges 25, and a second PCD blade 27 is embedded on the spiral cutting edges 25 and correspondingly positioned at the front end of the milling cutter section 22. In the present embodiment, an embedded step 29 is provided at the front end of the helical cutting edge 25 located at the milling cutting section 22, the second PCD insert 27 is welded and embedded on the embedded step 29, and the second PCD insert 27 is provided with a milling inclined plane 271 transitionally connecting the helical cutting edge 25 of the drilling cutting section 21 and the milling cutting section 22.

After the hole body is drilled, the cutter head part 2 continues to rotate and extend into the hole body, the second PCD blade 27 goes deep into the hole body in advance for milling and reaming, and a through groove body is milled and processed in a side milling mode along with the deep penetration of the milling cutter section 22; the arrangement of the second PCD blade 27 can not only enhance the efficiency of the milling cutter section 22 going deep into the milling and reaming in advance, but also enhance the overall service life of the cutting edge of the milling part, and the precision and the smoothness of the inner wall surface of the through groove body milled out from the side are also higher. When the drilling and milling cutter is used, drilling operation can be performed only by using the drilling section 21 at the front part of the cutter head part 2, namely, the drilling and milling cutter can be used as a drill for drilling alone.

In this embodiment, the included angle between the milling inclined plane 271 and the central axis of the cutter head 2 is 90 °, and the included angle between the drilling pin edge 231 and the central axis of the cutter head 2 is 59 °; the angle setting has fast feeding, small head angle during machining, easy downward cutting and especially suitable for machining hole or through slot in aluminum part.

Various other changes and modifications may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such changes and modifications should fall within the scope of the present invention.

Claims

1. A drilling and milling cutter for processing a through groove comprises a cutter handle (1) and a cutter head part (2) integrally arranged at the front part of the cutter handle (1), and is characterized in that a drilling cutter section (21) with the outer diameter of D1 is arranged at the front part of the cutter head part (2), a milling cutter section (22) with the outer diameter of D2 is arranged at the rear part of the drilling cutter section (21), D2 is larger than D1, a drill point (23) is arranged at the front end of the drilling cutter section (21), and a first PCD blade (24) is embedded on the lateral part of the drill point (23) and is flush with the outer surface of the drill point; the tool bit portion (2) surface links through drilling sword section (21) with milling sword section (22) are equipped with helical cutting edge (25), be formed with chip groove (26) between helical cutting edge (25), correspond on helical cutting edge (25) and be located the front end of milling sword section (22) is inlayed and is equipped with second PCD blade (27).

2. The drilling and milling cutter for machining through grooves according to claim 1, wherein a mosaic groove (28) is formed in the front end side of the drill tip (23), the first PCD blade (24) is welded and embedded in the mosaic groove (28), and the outer side edge (241) of the first PCD blade (24) is flush with the drill pin edge (231) of the drill tip (23).

3. The through slot machining drill milling cutter according to claim 2, wherein the helical cutting edge (25) has an inlay step (29) at a front end of the milling cutting section (22), and the second PCD insert (27) is weld-insertedly fixed to the inlay step (29) and has a milling bevel (271) transitionally joining the helical cutting edge (25) of the drilling cutting section (21) and the milling cutting section (22).

4. The through-slot machining drill-milling cutter according to claim 3, wherein the side of the helical cutting edge (25) is provided with a cutting edge (251) extending to the outer wall of the drill tip (23) corresponding to the direction of rotation of the nose portion (2).

5. The through groove machining drill milling cutter according to claim 4, wherein the shank (1) and the head portion (2) are made of alloy steel.

6. The through-slot machining drill-mill cutter according to claim 4, wherein the angle between the milling bevel (271) and the central axis of the head (2) is 90 °, and the angle between the drilling edge (231) and the central axis of the head (2) is 59 °.