CN211840290U

CN211840290U - Forming drill

Info

Publication number: CN211840290U
Application number: CN201921231913.9U
Authority: CN
Inventors: 祝小珊
Original assignee: Dongguan Yili Precision Cutting Tool Co ltd
Current assignee: Dongguan Yili Precision Cutting Tool Co ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-11-03
Anticipated expiration: 2029-07-31

Abstract

The utility model belongs to the technical field of machining tools, in particular to a forming drill, which comprises a tool handle and a tool bit connected with one end of the tool handle; the cutter head comprises a plurality of cutting parts which are connected in sequence, and the outer side wall of each cutting part is provided with an oil outlet; the forming drill further comprises an oil inlet channel, and the oil inlet channel sequentially penetrates through the tool shank and the cutting parts and is respectively communicated with the oil outlet; the utility model discloses a set up inside the oil feed passageway carries out the water conservancy diversion to lubricating oil, can further reduce the forming drill simultaneously and at its inside temperature in cutting process, lubricating oil is in each through evenly distributed flow to each behind the oil outlet of cutting portion the lateral wall of cutting portion for lubricating oil and each the lateral wall of cutting portion fully contacts, thereby improves the lubricated effect of lubricating oil, improves cutting efficiency, and the friction reduction to improve the life that the forming bored.

Description

Forming drill

Technical Field

The utility model belongs to the technical field of the machining cutter, especially, relate to a shaping is bored.

Background

The use of a drill to make a hole in a solid material is known as drilling. The hole machining of various parts is completed by a drilling machine and a drilling tool (a drill bit, a reamer, and the like) by a bench worker except for a part by lathing, boring, milling and other machine tools; however, when the drill bit drills, especially when the cutting amount is large, the defects of serious friction, difficult heat dissipation, high cutting temperature and difficult chip removal exist, so that the abrasion of the drill bit is accelerated, the service life of the drill bit is shortened, and the problem of hardening of the surface layer of a machined workpiece is caused, thereby affecting the dimensional precision of the product.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shaping is bored aims at solving among the prior art because of the drill bit heat dissipation difficulty and the serious life greatly reduced's that leads to the drill bit of friction technical problem.

In order to achieve the purpose, the embodiment of the utility model provides a forming drill, which comprises a tool handle and a tool bit connected with one end of the tool handle; the cutter head comprises a plurality of cutting parts which are connected in sequence, and the outer side wall of each cutting part is provided with an oil outlet; the forming drill further comprises an oil inlet channel, and the oil inlet channel sequentially penetrates through the cutter handle and the cutting parts and then is communicated with the oil outlet hole respectively.

Optionally, the forming drill further comprises an inner cooling hole, and the inner cooling hole sequentially penetrates through each cutting part.

Optionally, each cutting part is cylindrical and is coaxially arranged; each the cutting portion all is equipped with shaping end and stiff end, one the cutting portion the shaping end is with adjacent the stiff end of cutting portion is connected.

Optionally, the diameters of the cutting parts decrease in sequence in the direction away from the tool shank.

Optionally, each of the cutting portions is integrally formed.

Optionally, the outer ring of the profiled end of each said cutting portion is provided with a chamfer having an angle of 60 °.

Optionally, each cutting portion is provided with a chip groove, and the chip grooves are communicated in sequence.

Optionally, each of the cutting portions is made of a carbon steel material.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the shaping is bored has one of following technological effect at least: the oil inlet channel is communicated with an oil tank outside, lubricating oil in the oil tank flows into the oil inlet channel through an oil pipe, and the lubricating oil flows to the oil outlet holes after passing through the oil inlet channel and then flows to the outer side walls of the cutting parts from the oil outlet holes, so that the friction force applied to the cutting parts during machining is reduced; compared with the oil feed mode among the prior art, the utility model discloses a set up inside the oil feed passageway carries out the water conservancy diversion to lubricating oil, can further reduce the shaping simultaneously and bore its inside temperature in cutting process, and lubricating oil is in each through evenly distributed flow each behind the oil outlet of cutting portion the lateral wall of cutting portion makes lubricating oil and each the lateral wall of cutting portion fully contacts to improve the lubricated effect of lubricating oil, improve cutting efficiency, reduce friction, thereby improve the life that the shaping bored.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a front view of a forming drill according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a forming drill according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10-shank 20-bit 21-cutting portion

22-oil outlet 23-forming end 24-fixing end

25-oil inlet channel.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1-2, there is provided a forming drill, including a shank 10 and a bit 20 connected to one end of the shank 10; the cutter head 20 comprises a plurality of cutting parts 21 which are connected in sequence, and the outer side wall of each cutting part 21 is provided with an oil outlet 22; the forming drill further comprises an oil inlet channel 25, and the oil inlet channel 25 sequentially penetrates through the tool shank 10 and the cutting parts 21 and then is respectively communicated with the oil outlet 22.

In the utility model, the oil inlet channel 25 is communicated with an external oil tank, the lubricating oil in the oil tank flows into the oil inlet channel 25 through an oil pipe, and the lubricating oil flows to each oil outlet 22 after passing through the oil inlet channel 25 and then flows to the outer side wall of each cutting part 21 from the oil outlet 22, so that the friction force applied to each cutting part 21 during processing is reduced; compared with the prior art, the utility model discloses an oil feed mode, the utility model discloses a setting carries out the water conservancy diversion to lubricating oil in inside oil feed passageway 25, can further reduce the shaping simultaneously and bore its inside temperature in the cutting process, and lubricating oil flows to the lateral wall of each cutting portion 21 behind the oil outlet 22 of each cutting portion 21 through evenly distributed for lubricating oil and the abundant contact of lateral wall of each cutting portion 21, thereby improve the lubricated effect of lubricating oil, improve cutting efficiency, reduce friction, thereby improve the life that the shaping bored.

The utility model discloses a further embodiment, the shaping of this shaping brill is bored still includes interior cold hole, and interior cold hole passes each cutting portion 21 in proper order, adds interior cold hole, cools down each cutting portion 21 with the cooperation of oil feed passageway 25, further reduces the temperature of shaping brill in cutting process, improves the life that the shaping bored.

In another embodiment of the present invention, as shown in fig. 1 to 2, each cutting portion 21 of the forming drill is cylindrical, and each cutting portion 21 is coaxially disposed; each cutting part 21 is provided with a forming end 23 and a fixed end 24, and the forming end 23 of one cutting part 21 is connected with the fixed end 24 of the adjacent cutting part 21; the plurality of coaxially arranged cutting parts 21 meet different cutting requirements, and the application range is wide; specifically, a drill is arranged on the cutting portion 21 of the cutting portion 21 farthest from the tool holder 10, the vertical section of the drill is in an isosceles triangle shape, and the angle of the vertex angle of the drill is 120 degrees.

In another embodiment of the present invention, as shown in fig. 1 to 2, the diameter of each cutting portion 21 toward the direction away from the tool holder 10 of the shaping drill decreases gradually in sequence, the cross section of the tool bit 20 is stepped, the diameter of each cutting portion 21 decreases gradually in sequence, and the structure is stable, so that the machining process is more stable.

In another embodiment of the present invention, each cutting portion 21 of the forming drill is integrally formed, so as to facilitate the processing and production and have a stable structure.

In another embodiment of the present invention, as shown in fig. 1 to 2, the outer ring of the forming end 23 of each cutting portion 21 of the forming drill is provided with a chamfer with an angle of 60 °, and multiple experiments show that the outer ring of the forming end 23 is additionally provided with a chamfer with an angle of 60 °, so that the machining efficiency is higher, and 55 ° to 59 ° or 61 ° to 65 ° chamfers can be set.

The utility model discloses a further embodiment, all is equipped with the chip groove on each cutting portion 21 of this shaping brill, and each chip groove communicates in proper order, and the piece in the course of working is discharged from processing the work piece through the chip groove, reduces the influence to the shaping brill course of working, improves the machining precision and the machining efficiency that the shaping bored.

In another embodiment of the present invention, each cutting portion 21 of the forming drill is made of carbon steel material, and has the advantages of low hardness, high plasticity and toughness, and good welding performance; specifically, each cutting portion 21 is carburized to improve its surface hardness and surface contact strength, and to maintain its internal toughness.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A forming drill comprises a cutter handle and a cutter head connected to one end of the cutter handle; the oil-gas cutting machine is characterized in that the cutter head comprises a plurality of cutting parts which are connected in sequence, and the outer side wall of each cutting part is provided with an oil outlet; the forming drill further comprises an oil inlet channel, and the oil inlet channel sequentially penetrates through the cutter handle and the cutting parts and then is communicated with the oil outlet hole respectively so that lubricating oil can be fully contacted with the outer side wall of each cutting part.

2. The profile drill of claim 1, further comprising an internal cooling hole passing through each of the cutting portions in sequence.

3. The profile drill according to claim 1, wherein each cutting portion is cylindrical and each cutting portion is coaxially disposed; each the cutting portion all is equipped with shaping end and stiff end, one the cutting portion the shaping end is with adjacent the stiff end of cutting portion is connected.

4. The profile drill of claim 3, wherein the diameter of each cutting portion decreases in sequence away from the shank.

5. The shaped drill of claim 3, wherein each of the cutting portions is integrally formed.

6. A profile drill according to claim 3, wherein the outer ring of the profiled end of each said cutting portion is provided with a chamfer having an angle of 60 °.

7. The drill according to any one of claims 1 to 6, wherein each of the cutting portions is provided with a chip discharge groove, and the chip discharge grooves are sequentially communicated with each other.

8. A shaped drill according to any of claims 1 to 6, characterised in that each cutting portion is made of a carbon steel material.