CN213052783U

CN213052783U - Composite boring cutter

Info

Publication number: CN213052783U
Application number: CN202022070479.XU
Authority: CN
Inventors: 王沙丽; 王军
Original assignee: Hunan Xingzhong Technology Co ltd
Current assignee: Hunan Xingzhong Technology Co ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-04-27
Anticipated expiration: 2030-09-21

Abstract

The utility model provides a composite boring cutter, which comprises a base body, the base body includes first step portion, second step portion, third step portion and connecting portion, first step portion, second step portion, third step portion connect gradually and the diameter increases in proper order, connecting portion connect third step portion rear end, first step portion front end installation first blade group, second step portion front end installation second blade group, third step portion front end installation third blade group, third step portion front end and with the side-mounting fourth blade that one of them blade of fourth blade group deviates from, one of them blade of third blade group that fourth blade more deviated from is to the inboard slope installation of second step portion; the utility model discloses improve compound boring cutter structure comprises compound boring cutter base member and cutting blade, satisfies the shaping size processing of valve opening, installs the cutting blade again and provides the cutting blade, the loss only the cutting blade, compound boring cutter base member can the at utmost utilization.

Description

Composite boring cutter

Technical Field

The utility model relates to the technical field of cutters, specifically a compound boring cutter.

Background

The valve hole has a multi-step forming size, and the processing comprises 3 steps: 1. rough drilling of a U drill, 2, semi-finish machining of a composite drill, and 3, finish machining of a composite reamer.

The composite drill processing of the semi-finishing in the second step has the following problems: 1. the cost is high, the efficiency is low, and the speed is low; 2. the abrasion of the cutter is difficult to judge, the quality of the workpiece is uncontrollable, and the scrapping probability of the workpiece is high; 3. the cutting edge and the cutter base body are integrated into a whole, the whole cutter needs to be scrapped after the cutting edge is worn, the use value of the cutter is greatly reduced, and the cutter cost of a user is increased.

SUMMERY OF THE UTILITY MODEL

To the problem that the background art provided, this application provides a compound boring cutter to satisfy valve opening many steps shaping semi-finishing operation demand.

The technical scheme of the utility model as follows:

the utility model provides a composite boring cutter, includes the base member, the base member includes first step portion, second step portion, third step portion and connecting portion, first step portion, second step portion, third step portion connect gradually and the diameter increases in proper order, connecting portion connect third step portion rear end, first step portion front end installation first blade group, second step portion front end installation second blade group, third step portion front end installation third blade group, third step portion front end and with the side-mounting fourth blade that one of them blade of fourth blade group deviates from, one of them blade of third blade group that fourth blade deviates from is to the inboard slope installation of second step portion.

Furthermore, a first cutting groove is arranged on one side of the front surface of the base body, the first cutting groove penetrates through the front ends of the first step part, the second step part and the third step part, a second cutting groove is arranged on the reverse side of the base body opposite to the first cutting groove, the second cutting groove penetrates through the front ends of the first step part, the second step part and the third step part, the first blade group comprises a first blade group blade and a first blade group blade, the second blade group comprises a second blade group blade and a second blade group blade, the third blade group comprises a first blade group and a second blade group, the first blade group and the second blade group are arranged in the second cutting groove, the first blade group blade II, the second blade group blade II and the third blade group blade II are arranged in the first cutting groove.

Furthermore, a third cutting groove is formed in one side, far away from the second cutting groove, of the back face of the base body, the third cutting groove is formed in the third step portion and penetrates through the front end of the third step portion, and the fourth blade is installed in the third cutting groove.

Further, the base body is integrally machined and formed by metal.

Furthermore, the fourth blade is installed to incline to the inner side of the second step portion by 14-16 degrees compared with one blade of the third blade group which is deviated from the fourth blade.

Further, the first blade group and the fourth blade adopt CCMT060204 blades.

Further, the second blade group and the third blade group employ CCMT09T308 blades.

The utility model discloses make the design improvement on the cutter structure, improved into compound boring cutter structure, constitute by compound boring cutter base member and cutting blade, according to the dimensional requirement of work piece valve opening, the compound boring cutter base member of nonstandard design preparation satisfies the shaping size processing of valve opening, installs the cutting blade again and provides the cutting blade, the cutting blade that is of compound boring cutter structure loss, compound boring cutter base member can maximum utilization.

The utility model discloses compound boring cutter contrast compound brill main advantage includes:

1. the processing life is prolonged, the composite drill generally processes about 500 holes, the composite boring cutter only consumes the blade, and the life of the boring cutter substrate is at least 3 times of that of the composite drill.

2. The processing efficiency is improved, and the composite drilling parameters are S1000 and F65; and (4) compounding boring cutter parameters S1200 and F150.

3. The processing quality is improved, and the smoothness of the valve block processed by the composite boring cutter is superior to that of a composite drill.

4. The quality stability of a processed workpiece is improved, the abrasion of the cutting edge of the composite drill is fast, the condition that the front cone of the processed hole is too large can occur, the workpiece is scrapped, the cutting edge of the composite boring cutter is a hard alloy blade, the abrasion of the cutting edge is slow, and the quality of the processed workpiece hole is stable.

Drawings

FIG. 1 is a schematic structural diagram of a composite boring tool in a front view;

FIG. 2 is a rear view structural schematic diagram of a composite boring cutter;

the reference numbers in the figures illustrate: the cutting insert comprises a base body 1, a first step part 11, a second step part 12, a third step part 13, a connecting part 14, a first cutting groove 101, a second cutting groove 102, a third cutting groove 103, a first blade group 2, a first blade group blade 21, a first blade group blade 22, a second blade group 3, a second blade group blade 31, a second blade group blade 32, a third blade group 4, a third blade group blade 41, a third blade group blade 42 and a fourth blade 5.

Detailed Description

The present invention will be further described with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art.

In the embodiment of the present invention, all the directional indicators (such as upper, lower, left, right, front, and rear … …) are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture changes, the directional indicator changes accordingly; the description herein of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated; the technical solution described in this specification aims to achieve the object of the present invention, and the parts not described in detail are realized by using the prior art.

As shown in fig. 1-2, the composite boring tool comprises a base body 1, the base body 1 comprises a first step portion 11, a second step portion 12, a third step portion 13 and a connecting portion 14, the first step portion 11, the second step portion 12 and the third step portion 13 are sequentially connected and have sequentially increased diameters, the connecting portion 14 is connected with the rear end of the third step portion 13, a first cutting groove 101 is arranged on one side of the front surface of the base body 1, the first cutting groove 101 penetrates through the first step portion 11, the second step portion 12 and the front end of the third step portion 13, a second cutting groove 102 is arranged on the opposite side of the back surface of the base body 1 from the first cutting groove 101, the second cutting groove 102 penetrates through the first step portion 11, the second step portion 12 and the front end of the third step portion 13, a third cutting groove 103 is arranged on the other side of the back surface of the base body 1, and the third cutting groove 103 is arranged on the third step portion 13 and penetrates through the front end of the third step portion 13, the base body 1 is integrally formed by metal, a first blade group 2 is mounted at the front end of the first step part 11, the first blade group 2 comprises a first blade group first 21 and a first blade group second 22, a second blade group 3 is mounted at the front end of the second step part 12, the second blade group 3 comprises a second blade group first 31 and a second blade group second 32, a third blade group 4 is mounted at the front end of the third step part 13, the third blade group 4 comprises a third blade group first 41 and a third blade group second 42, the first blade group first 21, the second blade group first 31 and the third blade group first 41 are mounted in the second cutting groove 102, the first blade group second 22, the second blade group second 32 and the third blade group second 42 are mounted in the first cutting groove 101, and a fourth blade 5 is mounted at the front end of the third blade group 13 and at the side of the step part deviating from one of the fourth blade group 4, the fourth blade 5 is mounted in the third cutting groove 103, the fourth blade 5 is mounted by inclining 14-16 degrees (preferably 15 degrees) to the inner side of the second step portion 12 than one blade of the third blade group 4 which is far away from the fourth blade 5, the first blade group 2 and the fourth blade 5 adopt CCMT060204 blades, and the second blade group 3 and the third blade group 4 adopt CCMT09T308 blades.

The utility model discloses a theory of operation: the utility model discloses a compound boring cutter is used for valve opening multiple step shaping semi-finishing, utilizes first blade group 2, second blade group 3, third blade group 4 processing step hole, utilizes fourth blade 5 to carry out the chamfer to step hole surface, provides the cutting edge through installing the cutting blade, the cutting blade that is of compound boring cutter structure loss, compound boring cutter base member can the at utmost utilization.

The above embodiments are only used to illustrate the preferred embodiments of the present invention, but not to limit the present invention, and to those skilled in the art, according to the idea of the present invention, there will be some changes in the detailed description and the application scope, and the content of the present description should not be interpreted as a limitation to the present invention.

Claims

1. The composite boring cutter is characterized by comprising a base body, wherein the base body comprises a first step part, a second step part, a third step part and a connecting part, the first step part, the second step part and the third step part are sequentially connected, the diameters of the first step part, the second step part and the third step part are sequentially increased, the connecting part is connected with the rear end of the third step part, a first blade set is installed at the front end of the first step part, a second blade set is installed at the front end of the second step part, a third blade set is installed at the front end of the third step part, a fourth blade is installed at the front end of the third step part and at one side deviating from one blade of the fourth blade set, and the fourth blade is obliquely installed towards the inner side of the second step part compared with one blade of the third blade set.

2. The composite boring tool as claimed in claim 1, wherein the base body has a first cutting slot formed on a front side thereof, the first cutting slot extending through the first, second and third step portions and a front end thereof, and a second cutting slot formed on a rear side thereof opposite to the first cutting slot and extending through the first, second and third step portions and the front end thereof, the first insert set comprising a first insert set and a second insert set, the second insert set comprising a first insert set and a second insert set, the third insert set comprising a first insert set and a third insert set, the first insert set, the second insert set and the third insert set being mounted in the second cutting slot, the first insert set, the second insert set, the third insert set, The second blade set blade and the second blade set blade are arranged in the first cutting groove.

3. The composite boring tool as claimed in claim 1 or 2, wherein a third cutting flute is provided on a side of the back surface of the base body remote from the second cutting flute, the third cutting flute is provided on the third step portion and penetrates through a front end of the third step portion, and the fourth insert is mounted in the third cutting flute.

4. The composite boring tool as claimed in claim 3 wherein the substrate is integrally formed of metal.

5. The composite boring tool as claimed in claim 1 or claim 2 wherein the fourth insert is mounted with an inclination of 14 to 16 ° inwardly of the second step portion relative to the one of the third set of inserts facing away therefrom.

6. The composite boring tool as claimed in claim 3 wherein the fourth insert is mounted with an inclination of 14 to 16 ° inwardly of the second step portion relative to one of the second set of inserts facing away therefrom.

7. The composite boring tool of claim 1 wherein the first and fourth blade sets are CCMT060204 blades.

8. The composite boring tool of claim 1 or claim 6 wherein the second and third blade sets employ CCMT09T308 blades.