CN212470091U

CN212470091U - Screw tap structure for high-precision machining

Info

Publication number: CN212470091U
Application number: CN202021066499.3U
Authority: CN
Inventors: 汤咸贵
Original assignee: Hengyu Rongchuang Cutting Technology Suzhou Co ltd
Current assignee: Hengyu Rongchuang Cutting Technology Suzhou Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2021-02-05
Anticipated expiration: 2030-06-11

Abstract

The utility model relates to a screw tap structure for high-accuracy processing turns right from a left side and includes the cutting end in proper order, keep away the dead end, holder and link, be provided with the cutting edge that a plurality of groups present the screw thread shape on the cutting end, all be provided with the chip groove between the adjacent cutting edge, the front position of cutting edge is provided with direction cutting edge end, the cutting end, keep away dead end and holder integrated into one piece structure setting, wherein, cutting edge length is 2 ~ 2.5 times of cutting edge diameter, cutting edge length is 18 ~ 20 times of the length of direction cutting edge end, the core footpath is 0.6 ~ 0.8 times of cutting edge diameter, chip groove width is 1 ~ 1.2 times of back of a knife width. The utility model discloses a structure setting of cutting tip can effectively improve screw machining precision and quality, improves screw machining efficiency, reduction in production cost.

Description

Screw tap structure for high-precision machining

Technical Field

The utility model relates to a cutter correlation technique field for the metal cutting especially relates to a screw tap structure for high-accuracy processing.

Background

Starting from the 80 s of the 20 th century, under the drive of the development and the progress of the manufacturing industry in the world, the cutting technology and the cutter gradually enter a new development stage of a high-speed, high-efficiency and innovative process, the cutting machining efficiency is improved in multiples, and the cutting tool makes an important contribution to the development of high-end important technical equipment, engineering machinery, automobile manufacturing, aerospace and 3C industries. To date, innovative cutting technology and advanced cutting tools are applied to improve the processing quality and the processing efficiency and reduce the manufacturing cost, thereby improving the competitive strength of enterprises, becoming a consensus of mechanical manufacturing industry in industrially developed countries and also arousing the attention of mechanical processing enterprises in China. Therefore, the method has important practical significance in the mechanical metal cutting industry by paying attention to the research and development of advanced cutters, improving the application level of cutting cutters and continuously carrying out technical innovation. The screw tap structure in the prior art is easy to twist off in the processing and using processes, the processed screw hole has rough screw threads, large burrs and quick screw tap abrasion, the screw hole precision is difficult to guarantee, the processing speed is low, and the production efficiency is low.

In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a high-precision tap structure for machining, so that the tap structure has industrial value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a screw tap structure is used in high-accuracy processing.

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

the utility model provides a screw tap structure for high-accuracy processing, turn right from a left side and include the cutting end in proper order, keep away the vacancy end, holder and link, keep away the vacancy end and set up the front position at the holder, the cutting end sets up the front position at keeping away the vacancy end, be provided with the cutting edge that a plurality of groups presented the screw thread shape on the cutting end, all be provided with the chip groove between the adjacent cutting edge, the front position of cutting edge is provided with direction cutting edge end, the cutting end, keep away vacancy end and holder integrated into one piece structure setting, wherein, cutting edge length is 2 ~ 2.5 times of cutting edge diameter, cutting edge length is 18 ~ 20 times of the length of direction cutting edge end, the core footpath is 0.6 ~ 0.8 times of cutting edge diameter, chip groove width is 1 ~ 1.2 times of back of a knife width.

As a further improvement of the utility model, a transition arc end is connected and arranged between the air avoiding end and the clamping end.

As a further improvement of the utility model, the outside of the circumferential surface of the clamping end is provided with a plurality of thread-shaped anti-slip lines.

As a further improvement of the utility model, the quantity of cutting edge and chip groove all is 3 groups at least.

As a further improvement, the guide cutting edge angle is 40-50 degrees, and the spiral chip removal angle is 12-15 degrees.

As the utility model discloses a further improvement, the cutting end is the carbide structure setting with keeping away empty the end, and the surface coating of cutting end has the AlTiN coating.

As a further improvement of the utility model, the outside on the connecting end is provided with connecting threads.

As a further improvement, the cutting end, the hollow-avoiding end and the clamping end are arranged with the connecting end integrally formed structure.

As a further improvement of the utility model, the cutting end, the hollow-avoiding end and the clamping end are arranged in a split structure with the connecting end.

Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage:

the utility model relates to a screw tap structure is used in high accuracy processing through the structure setting of cutting tip portion, can effectively improve screw machining precision and quality, improves screw machining efficiency, reduction in production cost.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a screw tap structure for high-precision machining according to the present invention;

FIG. 2 is a schematic view of the construction of the cutting end and clearance end portions of FIG. 1;

fig. 3 is a schematic structural view of a left side view of fig. 1.

In the drawings, the meanings of the reference numerals are as follows.

1 cutting end 2 clearance end

3 clamping end 4 connecting end

5 cutting edge 6 chip groove

7 transition arc end 8 antiskid line

Length of cutting edge A and diameter of cutting edge B

C guide cutting edge end D guide cutting edge angle

E spiral chip removal angle F core diameter

G blade back width H chip removal groove width

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In order to make the technical solution of the present invention better understood, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

As shown in figures 1 to 3 of the drawings,

the utility model provides a high accuracy is screw tap structure for processing, turn right from a left side and include cutting end 1 in proper order, keep away void end 2, holder 3 and link 4, keep away void end 2 and set up the front end position at holder 3, cutting end 1 sets up the front end position at keep away void end 2, be provided with a plurality of groups on the cutting end 1 and present the cutting edge 5 of screw thread shape, all be provided with chip groove 6 between the adjacent cutting edge 5, the front end position of cutting edge 5 is provided with direction cutting edge end C, cutting end 1, keep away void end 2 and holder 3 integrated into one piece structure setting, wherein, cutting edge length A is 2 ~ 2.5 times of cutting edge diameter B, cutting edge length A is 18 ~ 20 times of the length of direction cutting edge end C, core diameter F is 0.6 ~ 0.8 times of cutting edge diameter B, chip groove width H is 1 ~ 1.2 times of back of the edge width G.

Preferably, a transition arc end 7 is further connected and arranged between the avoidance end 2 and the clamping end 3.

Preferably, the outer side of the circumferential surface of the clamping end 3 is provided with a plurality of thread-shaped anti-slip threads 8. The friction between the user and the clamping end 3 can be increased through the anti-slip lines 8, and slipping during taking is prevented.

Preferably, the number of cutting edges 5 and flutes 6 is at least 3.

Preferably, the guide cutting edge angle D is 40-50 degrees, and the spiral chip removal angle E is 12-15 degrees.

Preferably, the cutting end 1 and the clearance-avoiding end 2 are both arranged in a hard alloy structure, and the outer surface of the cutting end 1 is coated with an AlTiN coating.

Preferably, the outer side on the connecting end 4 is provided with a connecting thread.

Preferably, the cutting end 1, the clearance end 2, the clamping end 3 and the connecting end 4 are integrally formed. The integrated into one piece structure sets up, makes holistic stability stronger, and is convenient for processing production.

Preferably, the cutting end 1, the clearance end 2, the clamping end 3 and the connecting end 4 are arranged in a split structure. The components of a whole that can function independently structure sets up, can conveniently change different link 4 to this processing board that adapts to different sizes and specification.

The utility model relates to a screw tap structure is used in high accuracy processing mainly includes the dead in keeping away of cutting end 1, the middle part of front end holds 2 and is used for the exposed core 3 of centre gripping installation to and the link 4 that is used for connecting of rear end.

Wherein, the cutting end 1 is provided with at least three groups of cutting edges 5, and is provided with at least three groups of chip grooves 6 which are adjacent to the cutting edges and used for containing and discharging chips. The cutting edge 5 is provided with a plurality of screw teeth.

The structure that adopts big core footpath sets up, and the diameter increase of core footpath F is to cutting edge diameter B0.6 ~ 0.8 times, has increased the holistic rigidity of screw tap and intensity, can effectively prevent because of screw tap core footpath F is less, and the rigidity is not enough to lead to the screw tap wrench-off scheduling problem.

Through increasing chip removal groove width H to increase and hold bits and chip removal space, increase chip removal groove width H to 1 ~ 1.2 times of back of edge width J. Because the heat-resistant alloy steel material has strong toughness, the chips are in a strip shape, and the chip accommodating space and the chip removing space are increased, so that the screw tap twist-off caused by unsmooth chip removal and chip blockage can be effectively prevented.

The tap body is arranged in a hard alloy structure, and the outer surface of the cutting end 1 is coated with an AlTiN coating. The wear-resisting property of the screw tap can be effectively improved, the service life of the screw tap can be effectively prolonged, the friction coefficient during cutting can be reduced, the surface quality of the screw hole is improved, meanwhile, the higher cutting speed can be used for machining, and the production efficiency is further improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly referring to the number of technical features being grined. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected: either mechanically or electrically: the terms may be directly connected or indirectly connected through an intermediate member, or may be a communication between two elements.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The screw tap structure for high-precision machining is characterized by comprising a cutting end (1), a clearance end (2), a clamping end (3) and a connecting end (4) from left to right in sequence, wherein the clearance end (2) is arranged at the front end of the clamping end (3), the cutting end (1) is arranged at the front end of the clearance end (2), a plurality of groups of cutting edges (5) in a thread shape are arranged on the cutting end (1), chip discharge grooves (6) are formed between every two adjacent cutting edges (5), a guide cutting edge end (C) is arranged at the front end of each cutting edge (5), the cutting end (1), the clearance end (2) and the clamping end (3) are integrally formed, the cutting edge length (A) is 2-2.5 times of the cutting edge diameter (B), and the cutting edge length (A) is 18-20 times of the guide cutting edge end (C), the core diameter (F) is 0.6-0.8 times of the diameter (B) of the cutting edge, and the width (H) of the chip removal groove is 1-1.2 times of the width (G) of the blade back.

2. A tap structure for high precision machining according to claim 1 characterized in that a transition arc end (7) is connected between the void-avoiding end (2) and the clamping end (3).

3. A tap structure for high precision machining according to claim 1 characterized in that the outer side of the circumferential surface of the holder (3) is provided with a plurality of thread-like anti-slip threads (8).

4. A tap structure for high precision machining according to claim 1 characterized in that the number of said cutting edges (5) and said flutes (6) is at least 3.

5. A tap structure for high precision machining according to claim 1, characterized in that the cutting end (1) and the clearance end (2) are both provided in a cemented carbide structure, and the outer surface of the cutting end (1) is coated with AlTiN coating.

6. A tap structure for high precision machining according to claim 1 characterized in that the outside of said connecting end (4) is provided with a connecting thread.

7. The tap structure for high precision machining according to claim 1, characterized in that the cutting end (1), the clearance end (2), the clamping end (3) and the connecting end (4) are integrally formed.

8. The tap structure for high-precision machining according to claim 1, wherein the cutting end (1), the clearance end (2), the clamping end (3) and the connecting end (4) are arranged in a split structure.