CN212470092U

CN212470092U - Double-end structural formula screw tap structure for high-precision machining

Info

Publication number: CN212470092U
Application number: CN202021066505.5U
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 is used in high-accuracy processing of double-end structural formula, including the exposed core, the left and right sides of exposed core all is provided with the cutting end through keeping away the connection of empty end, the outside of cutting end is connected and is provided with the cutting end overcoat, the outside on exposed core circumferential surface is provided with the external screw thread, the inboard of the overcoat link circumferential surface of cutting end overcoat is provided with the internal thread, the overcoat link passes through internal thread and external screw thread and holder threaded connection setting, it presents the cutting edge of screw thread shape to be provided with a plurality of groups on the cutting end, all be provided with the chip groove between the adjacent cutting edge, the front end position of cutting edge is. 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. Meanwhile, due to the structural arrangement of the double-end cutting end, the processing cost of the cutter is saved, the waste of processing materials is reduced, and the service life of the cutter is prolonged to a certain extent.

Description

Double-end structural formula 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 is used in high-accuracy processing of double-end structural formula.

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 defects, the present designer has made active research and innovation to create a double-head structural type high-precision machining screw tap structure, which has industrial utility 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-precision machining of double-end structural formula.

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

a double-end structural type high-precision machining screw tap structure comprises a clamping end, wherein the left side and the right side of the clamping end are respectively provided with a cutting end through a clearance end in a connected mode, the outer side of the cutting end is provided with a cutting end outer sleeve in a connected mode, the outer side of the circumferential surface of the clamping end is provided with an external thread, the inner side of the circumferential surface of an outer sleeve connecting end of the cutting end outer sleeve is provided with an internal thread, the outer sleeve connecting end is in threaded connection with the clamping end through the internal thread and the external thread, a plurality of groups of cutting edges in a thread shape are arranged on the cutting end, chip removing grooves are formed between every two adjacent cutting edges, a guide cutting edge end is arranged at the front end position of each cutting edge, the cutting end, the clearance end and the clamping end are arranged in an integrated forming structure, the length of each cutting edge is 2-2.5 times of the diameter of each cutting, the width of the chip removal groove is 1-1.2 times of the width of the blade back.

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, the diameter of the outer sleeve of the cutting end is 1.2 to 1.5 times of the diameter of the cutting edge, and the diameter of the connecting end of the outer sleeve is 1.2 to 1.3 times of the diameter of the clearance end.

As a further improvement, the cutting end outer sleeve is of a hard alloy structure, and the inner side of the cutting end outer sleeve is provided with a rubber cushion layer.

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 of double-end structural formula, through the structure setting of cutting end part, can effectively improve screw machining precision and quality, improve screw machining efficiency, reduction in production cost. Meanwhile, due to the structural arrangement of the double-end cutting end, the processing cost of the cutter is saved, the waste of processing materials is reduced, and the service life of the cutter is prolonged to a certain extent.

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 double-head structural type high-precision machining screw tap structure of the present invention;

FIG. 2 is a schematic view of the cutting tip of FIG. 1 with the outer sleeve removed;

FIG. 3 is a schematic view of the construction of the cutting end and clearance end portions of FIG. 2;

fig. 4 is a schematic structural view of a left or right side view of fig. 2.

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

1 cutting end jacket 2 clearance end

3 clamping end 4 jacket connecting end

5 transition arc end 6 anti-slip pattern

7 cutting tip 8 cutting edge

9 chip groove 10 external thread

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 4 of the drawings,

a double-end structured screw tap structure for high-precision machining comprises a clamping end 3, wherein the left side and the right side of the clamping end 3 are respectively provided with a cutting end 7 through a hollow-avoiding end 2 in a connecting manner, the outer side of the cutting end 7 is provided with a cutting end outer sleeve 1 in a connecting manner, the outer side of the circumferential surface of the clamping end 3 is provided with an external thread 10, the inner side of the circumferential surface of an outer sleeve connecting end 4 of the cutting end outer sleeve 1 is provided with an internal thread, the outer sleeve connecting end 4 is in threaded connection with the clamping end 3 through the internal thread and the external thread 10, a plurality of groups of cutting edges 8 in a thread shape are arranged on the cutting end 7, chip-removing grooves 9 are arranged between every two adjacent cutting edges 8, the front end position of each cutting edge 8 is provided with a guide cutting edge end C, the cutting end 7, the hollow-avoiding end 2 and the clamping end 3 are integrally formed, wherein the cutting edge length A is, the core diameter F is 0.6-0.8 times of the cutting edge diameter B, and the width H of the chip groove is 1-1.2 times of the width G of the blade back.

Preferably, a transition arc end 5 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 6.

Preferably, the number of cutting edges 8 and flutes 9 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 7 and the clearance-avoiding end 2 are both arranged in a hard alloy structure, and the outer surface of the cutting end 7 is coated with an AlTiN coating.

Preferably, the diameter of the cutting end outer sleeve 1 is 1.2-1.5 times of the diameter B of the cutting edge, and the diameter of the outer sleeve connecting end 4 is 1.2-1.3 times of the diameter of the clearance end 2.

Preferably, the cutting end housing 1 is made of hard alloy, and a rubber cushion layer is arranged on the inner side of the cutting end housing 1. The damage of the cutting end outer sleeve 1 to the structure of the cutting edge 8 on the inner cutting end 7 can be reduced through the rubber buffer layer.

Wherein, the outer side of the circumferential surface of the cutting end outer sleeve 1 is provided with a connecting thread connected with an operating machine table, generally, when the cutting end 7 of the first end is used for processing, the cutting end outer sleeve 1 on the cutting end 7 of the first end is removed, the cutting end 7 of the second end is connected with the operating machine table through the cutting end outer sleeve 1, and the steps when the cutting end 7 of the second end is used for processing are similar to the above process.

The utility model relates to a screw tap structure is used in high accuracy processing mainly includes the cutting end 7 that is used for the exposed core 3 and both sides of centre gripping installation at middle part.

Wherein, the cutting end 7 is at least provided with three groups of cutting edges 8, and is also at least provided with three groups of chip grooves 9 which are adjacent to the cutting edges and used for chip containing and discharging. A plurality of screw teeth are arranged on the cutting edge 8.

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 7 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.

The utility model relates to a screw tap structure is used in high-accuracy processing of double-end structural formula, through the structure setting of cutting end part, can effectively improve screw machining precision and quality, improve screw machining efficiency, reduction in production cost. Meanwhile, due to the structural arrangement of the double-end cutting end 7, the processing cost of the cutter is saved, the waste of processing materials is reduced, and the service life of the cutter is prolonged to a certain extent.

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 is characterized by comprising a clamping end (3), wherein the left side and the right side of the clamping end (3) are respectively provided with a cutting end (7) through connection of a clearance end (2), the outer side of the cutting end (7) is provided with a cutting end outer sleeve (1) in a connection manner, the outer side of the circumferential surface of the clamping end (3) is provided with an external thread (10), the inner side of the circumferential surface of an outer sleeve connecting end (4) of the cutting end outer sleeve (1) is provided with an internal thread, the outer sleeve connecting end (4) is in threaded connection with the clamping end (3) through the internal thread and the external thread (10), a plurality of groups of cutting edges (8) presenting a thread shape are arranged on the cutting end (7), a chip removal groove (9) is arranged between every two adjacent cutting edges (8), and a guide cutting edge end (C) is arranged at the front end of each cutting edge (, cutting end (7), keep away empty 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), and cutting edge length (A) is 18 ~ 20 times of the length of direction cutting edge end (C), and core footpath (F) is 0.6 ~ 0.8 times of cutting edge diameter (B), and chip removal groove width (H) is 1 ~ 1.2 times of back of a blade width (G).

2. The screw tap structure for the double-ended structural high-precision machining according to claim 1 is characterized in that a transition arc end (5) is further connected and arranged between the void-avoiding end (2) and the clamping end (3).

3. The double-ended structural type tap structure for high-precision machining according to claim 1, wherein a plurality of thread-shaped anti-slip threads (6) are provided on the outer side of the circumferential surface of the clamping end (3).

4. The tap structure of a double-ended structural type for high precision machining according to claim 1, wherein the number of the cutting edges (8) and the number of the chip flutes (9) are each at least 3 groups.

5. The tap structure with the double-ended structure for high-precision machining according to claim 1 is characterized in that the cutting end (7) and the clearance end (2) are both of a hard alloy structure, and the outer surface of the cutting end (7) is coated with an AlTiN coating.

6. The screw tap structure for the double-ended structural high-precision machining according to claim 1 is characterized in that the diameter of the cutting end outer sleeve (1) is 1.2-1.5 times of the diameter (B) of the cutting edge, and the diameter of the outer sleeve connecting end (4) is 1.2-1.3 times of the diameter of the clearance end (2).

7. The double-ended structural type tap structure for high precision machining according to claim 1, wherein the cutting end outer sleeve (1) is of a cemented carbide structure, and a rubber cushion layer is arranged on the inner side of the cutting end outer sleeve (1).