阅读说明：本技术 高性能彩圈丝锥 (High-performance color ring screw tap ) 是由 董向阳 于 2018-06-30 设计创作，主要内容包括：本发明涉及高性能彩圈丝锥。包括丝锥柄和丝锥体,所述丝锥体的前部设有切削部,所述切削部上设有切削刃,所述切削部的后端设有攻丝部,所述攻丝部上设有螺牙,攻丝部的外圆周上均匀设有若干排屑槽,所述丝锥柄呈正直六棱柱状,丝锥柄的棱柱侧面上开有三个定位孔,定位孔在正直六棱柱面上互成120度分布,所述丝锥柄和丝锥体的中心轴线设有一贯穿丝锥柄和丝锥体的冷却通道,所述攻丝部设有若干斜孔,斜孔的一端与冷却通道接通,斜孔的另一端延伸至排屑槽内,所述丝锥体的表面设有氮化硼硬质耐磨涂层。本发明结构简单,丝锥体强度和硬度高,冷却效果好,丝锥被夹持稳定,使用寿命长。(The invention relates to a high-performance color ring screw tap. Including screw tap handle and silk cone, the front portion of silk cone is equipped with the cutting part, be equipped with the cutting edge on the cutting part, the rear end of cutting part is equipped with tapping portion, be equipped with the thread on the tapping portion, evenly be equipped with a plurality of chip grooves on the outer circumference of tapping portion, the screw tap handle is straight hexagonal prism form, and it has three locating hole to open on the prismatic side of screw tap handle, and the locating hole becomes 120 degrees distributions each other on straight hexagonal prism face, the central axis of screw tap handle and silk cone is equipped with a cooling channel who runs through screw tap handle and silk cone, the tapping portion is equipped with a plurality of inclined holes, and the one end and the cooling channel switch-on of inclined hole, the other end of inclined hole extend to in the chip groove, the surface of silk cone is equipped with boron nitride stereoplasm wear-resistant coating. The invention has the advantages of simple structure, high strength and hardness of the tap body, good cooling effect, stable clamping of the tap and long service life.)

1. The high-performance color ring screw tap is characterized by comprising a screw tap handle and a screw tap body, wherein a cutting part is arranged at the front part of the screw tap body, a cutting edge is arranged on the cutting part, a tapping part is arranged at the rear end of the cutting part, screw threads are arranged on the tapping part, a plurality of chip removal grooves are uniformly formed in the outer circumference of the tapping part, the screw tap handle is in a right-straight hexagonal prism shape, three positioning holes are formed in the prism side surface of the screw tap handle, the positioning holes are distributed at 120 degrees on the right-straight hexagonal prism surface, a cooling channel penetrating through the screw tap handle and the screw tap body is arranged on the central axis of the screw tap handle and the central axis of the screw tap body, a plurality of inclined holes are formed in the tapping part, one ends of the inclined holes are communicated with the cooling channel, the other ends of the inclined holes extend into the chip removal grooves.

2. The high performance color-ring tap according to claim 1, wherein the diameter of said inclined hole is 1.5-2.5 mm.

3. The high-performance color-ring tap according to claim 1, wherein the positioning hole is a flat-bottomed blind hole with a chamfered hole opening.

4. The high performance color-ring tap according to claim 1, wherein the thickness of said boron nitride hard wear-resistant coating is 25 mm.

Technical Field

The invention relates to a screw tap, in particular to a high-performance color ring screw tap, and belongs to the technical field of hardware tools.

Background

A screw tap is a common hardware tool, and is generally used for machining cylindrical or conical internal threads, also called a screw tap, on a workpiece. The tap can be divided into a spiral tap and a straight-edge tap according to the shapes, can be divided into a hand tap and a machine tap according to the using environment, and is a difficult processing procedure because the tap is almost buried in a workpiece for cutting, the processing load on the teeth of the tap is very large, and the contact surface with the workpiece is very large, so that the requirement on the strength of the tap is high, the tap is difficult to cut into the processed workpiece in the process of processing internal threads, and if the tap is made of a material with high hardness, the cutting difficulty is high, and a cutter is easy to damage; the clamping stability of the clamping part of the screw tap is an important factor influencing the machining precision, the traditional screw tap handle is often machined into an optical axis handle or a right-angle handle, the optical axis handle screw tap is easy to slip and follow-up in machining, the axial and axial stability performance is poor, the circumferential clamping of the right-angle handle screw tap is stable, the slipping or follow-up phenomenon cannot occur, the axial abnormal movement and shaking of the right-angle handle screw tap still occur, and the machining precision is not obviously improved; continuous lubrication and cooling of the cutting edge of the tap are required during the machining of the internal thread, otherwise the cutting edge may be too hot to machine or may work inefficiently.

Disclosure of Invention

Aiming at the defects, the invention aims to provide the high-performance color ring screw tap which is simple in structure, high in screw tap strength and wear resistance, good in cooling effect, convenient to cut into a processed material and long in service life.

Therefore, the technical scheme adopted by the invention is as follows:

including screw tap handle and silk cone, the front portion of silk cone is equipped with the cutting part, be equipped with the cutting edge on the cutting part, the rear end of cutting part is equipped with tapping portion, be equipped with the thread on the tapping portion, evenly be equipped with a plurality of chip grooves on the outer circumference of tapping portion, the screw tap handle is straight hexagonal prism form, and it has three locating hole to open on the prismatic side of screw tap handle, and the locating hole becomes 120 degrees distributions each other on straight hexagonal prism face, the central axis of screw tap handle and silk cone is equipped with a cooling channel who runs through screw tap handle and silk cone, the tapping portion is equipped with a plurality of inclined holes, and the one end and the cooling channel switch-on of inclined hole, the other end of inclined hole extend to in the chip groove, the surface of silk cone is equipped with boron nitride stereoplasm wear-resistant coating.

As a further improvement of the technical scheme, the diameter of the inclined hole is 1.5-2.5 mm.

As a further improvement of the technical scheme, the positioning hole is a flat-bottom blind hole with a chamfer at the hole opening.

As a further improvement of the technical scheme, the thickness of the boron nitride hard wear-resistant coating is 25 mm.

The invention has the advantages that:

the thread tap has a simple structure, the surface of the thread tap body is provided with the boron nitride hard wear-resistant coating, the surface hardness of the thread tap body is improved, the thread tap has good wear resistance, the clamping state of the thread tap is stable, the cutting part is additionally arranged at the front part of the thread tap body, the thread tap body can be conveniently cut into a processed material, the inclined hole is additionally arranged in the thread tap body, the thread tap body can be rapidly cooled, the cooling effect is good, and the service life is prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a cross-sectional view a-a of fig. 1.

In the figure, 1 is a screw tap shank, 2 is a cutting portion, 3 is a screw thread, 4 is a chip groove, 5 is a positioning hole, 6 is a cooling passage, and 7 is a slant hole.

Detailed Description

High performance color ring screw tap, including screw tap handle 1 and screw tap body, the front portion of screw tap body is equipped with cutting part 2, be equipped with the cutting edge on the cutting part 2, the rear end of cutting part 2 is equipped with tapping portion, be equipped with thread 3 in the tapping portion, evenly be equipped with a plurality of chip grooves 4 on the outer circumference of tapping portion, screw tap handle 1 is straight hexagonal prism form, and it has three locating hole 5 to open on the prismatic side of screw tap handle 1, and locating hole 5 becomes 120 degrees distributions each other on straight hexagonal prism face, the central axis of screw tap handle 1 and screw tap body is equipped with a cooling channel 6 that runs through screw tap handle 1 and screw tap body, the tapping portion is equipped with a plurality of inclined holes 7, and the one end and the cooling channel 6 switch-on of inclined hole 7, and the other end of inclined hole 7 extends to in the chip groove 4, the surface of screw tap body is equipped with the wear-resistant hard coating of boron nitride.

As a further improvement of the technical scheme, the diameter of the inclined hole 7 is 1.5-2.5 mm.

As a further improvement of the technical scheme, the positioning hole 5 is a flat-bottom blind hole with a chamfer at the hole opening.

As a further improvement of the technical scheme, the thickness of the boron nitride hard wear-resistant coating is 25 mm.