Non-standard T-shaped screw tap

Abstract

The utility model discloses a non-standard T-shaped screw tap which comprises a supporting guide column, the top end of the supporting guide column is fixedly connected with a front cone, the bottom end of the supporting guide column is fixedly connected with a connecting part, a chip containing groove is formed in the outer side of the upper end of the supporting guide column, and the screw tap is fixedly connected to the outer side of the supporting guide column in a threaded mode. The high-strength tensile fiber penetrates through the top of the supporting guide column and is connected to the bottom of the supporting guide column. According to the non-standard T-shaped screw tap, through the design that the supporting guide column is combined with the screw tap threads, the stability, the machining strength and the service life during machining can be effectively guaranteed, the supporting guide column prevents uncontrollable factors caused by vibration during working, the working efficiency of the screw tap during working is further improved, and in the process that the screw tap is used for tapping, the service life of the screw tap is prolonged. The high-strength tensile fibers can share torsion generated when the screw tap works, the possibility that the screw tap is damaged and broken due to the fact that the torsion is too large during operation is reduced, and the screw tap is protected to a certain degree.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing tools, in particular to a non-standard T-type tap. Background Art

[0002] When processing some parts in the mechanical field, some parts need to be processed with threaded holes. Among them, taps are a tool for processing internal threads, also called screw taps. Taps can be divided into manual taps and machine taps. In specific applications, the appropriate tap type can be selected according to processing requirements, material type, thread depth and processing environment. However, the existing taps still have defects and deficiencies in some aspects that need to be improved:

[0003] For example, the tap with application number: CN201920793075.8 includes a cone body, one end of which is provided with a spiral cutting edge band for machining an internal thread on a workpiece, a chip removal groove is provided on the cone body along its axial direction, and also includes a cone seat, one end of which is provided with a connecting block for connecting to a power shaft, an insert block is provided at one end of the cone body away from the spiral cutting edge band, and an end of the cone seat away from the connecting block is provided with a slot extending along its length direction, the insert block is detachably inserted in the slot, and a locking mechanism for locking it on the cone seat is provided on the insert block, the locking mechanism includes a locking block provided on the insert block, an elastic member is provided at the bottom of the locking block, one end of the elastic member is connected to the insert block, the elastic member has a tendency to pull the locking block toward the insert block, a locking hemisphere is provided on the bottom surface of the locking block, and a locking hole matching the locking hemisphere is provided on the surface of the cone seat. The cone body part can be easily replaced, and the combination state of the cone body and the cone seat is relatively stable, which can prevent it from falling during processing.

[0004] The taps in the above documents have high hardness, small diameter, large pitch and long overhang. Conventional lathe processing first uses a non-standard carbide tool bar to rough and remove the excess, and then the machine is removed for manual tapping, which has a relatively low work efficiency.

[0005] The taps in the above documents have no wear-resistant treatment on their outer sides, which results in the working part of the tap having low surface hardness and poor wear resistance. The taps will produce certain wear during long-term operation, which reduces the service life of the taps.

[0006] So we proposed non-standard T-tap to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide a non-standard T-type tap to solve the problems in the above background technology that the product has high hardness, small diameter, large pitch and long overhang, low working efficiency and the working part of the tap has low surface hardness and poor wear resistance.

[0008] To achieve the above object, the utility model provides the following technical solution: a non-standard T-type tap, comprising a support guide column, the top end of which is fixedly connected to a front cone, and the bottom end of which is fixedly connected to a connecting portion;

[0009] A chip groove, the chip groove is arranged on the outer side of the upper end of the support guide column;

[0010] A tap thread, wherein the tap thread is fixedly connected to the outer side of the support guide column;

[0011] The high-strength tensile fiber is connected from the top of the support guide column to the bottom of the support guide column.

[0012] Furthermore, three chip grooves are arranged in a circular array about the center point of the supporting guide column, and the interior of the chip groove is designed to be arc-shaped.

[0013] Furthermore, three circular arrays of the tap threads are arranged about the center point of the support guide column, and the tap threads are arranged relatively closely, and chip grooves are arranged between two rows of chip grooves.

[0014] Furthermore, the high-strength tensile-resistant fibers are made of a mixture of carbon fiber and glass fiber, and the high-strength tensile-resistant fibers are arranged in groups of three at the same angle as the tap thread inside the support guide column.

[0015] Furthermore, an anti-oxidation coating is provided on the outer surface of the support guide column, and a wear-resistant coating is provided on the outer surface of the anti-oxidation coating.

[0016] Furthermore, the anti-oxidation coating is made of a TiSiN nano-coating and a CrAlN nano-coating, and the TiSiN nano-coating and the CrAlN nano-coating are alternately deposited on the outer surface of the support guide pillar.

[0017] Furthermore, the wear-resistant coating is a boron nitride hard coating and an aluminum oxide hard coating, and the wear-resistant coating completely wraps the anti-oxidation coating.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The design of combining the support guide column with the tap thread can effectively ensure the stability, processing strength and service life during processing. The support guide column prevents uncontrollable factors caused by vibration during operation, further improving the working efficiency of the tap during operation;

[0020] 2. When using a tap for tapping, the high-strength tensile fiber will share the torque generated by the tap when it is working, reducing the possibility of damage and breakage of the tap due to excessive torque during operation, and protecting the tap to a certain extent;

[0021] 3. The design of anti-oxidation coating and wear-resistant coating can protect the outer surface of the support guide column, reducing the phenomenon of reduced service life of the tap due to wear and oxidation during use;

[0022] 4. The wear-resistant coating adopts a double-layer design of boron nitride hard coating and aluminum oxide hard coating, which further improves the strength of the outer surface of the support guide column, improves the wear resistance of the support guide column, and enhances the service life and use effect of the support guide column;

[0023] 5. Anti-oxidation coating: TiSiN nano coating and CrAlN nano coating can improve the high temperature oxidation resistance of the support guide pillar to a certain extent, greatly improve the service life of the tap. At the same time, TiSiN nano coating and CrAlN nano coating do not contain any harmful ingredients, and are safe and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the support guide column of the utility model;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection part of the utility model;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the front cone of the utility model;

[0027] Figure 4 This is a schematic diagram of the top view of the support guide column of the utility model;

[0028] Figure 5 This is a bottom view of the structure of the connection part of the utility model;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the wear-resistant coating of the utility model;

[0030] Figure 7 For this utility model Figure 5 Enlarged structural diagram at A in the middle.

[0031] In the figure: 1. Support guide pin; 2. Front cone; 3. Connecting part; 4. Chip groove; 5. Tap thread; 6. High-strength tensile fiber; 7. Anti-oxidation coating; 8. Wear-resistant coating. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Embodiment 1:

[0034] like Figure 1 , Figure 2 and Figure 3 The technical solution shown in the figure, the utility model provides the following technical solution: non-standard T-type tap, discloses a support guide column 1 and a tap thread 5, and the support guide column 1 and the tap thread 5 are combined to prevent the tap from twisting off and greatly improve the production efficiency:

[0035] A support guide column 1, the top end of which is fixedly connected to a front cone 2, and the bottom end of which is fixedly connected to a connecting portion 3;

[0036] A chip groove 4, which is arranged on the outer side of the upper end of the support guide column 1;

[0037] A tap thread 5, wherein the tap thread 5 is fixedly connected to the outer side of the support guide column 1;

[0038] There are three chip grooves 4 arranged in a circular array about the center point of the support guide column 1, and the interior of the chip groove 4 is designed to be arc-shaped; there are three tap threads 5 arranged in a circular array about the center point of the support guide column 1, and the tap threads 5 are arranged relatively closely, and chip grooves 4 are arranged between two rows of chip grooves 4.

[0039] The design of combining the support guide column 1 with the tap thread 5 can effectively ensure the stability, processing strength and service life during processing. The support guide column 1 prevents uncontrollable factors caused by vibration during operation, further improving the working efficiency of the tap during operation.

[0040] Embodiment 2:

[0041] like Figure 1 and Figure 4 The technical solution shown in the figure, the utility model provides the following technical solutions: non-standard T-type tap, discloses high-strength tensile fiber 6, through which the high-strength tensile fiber 6 reduces the damage and breakage of the tap due to excessive torque during operation:

[0042] High-strength tensile fiber 6, the high-strength tensile fiber 6 is connected from the top of the support guide column 1 to the bottom of the support guide column 1;

[0043] The high-strength tensile-resistant fibers 6 are made of a mixture of carbon fiber and glass fiber, and are arranged in groups of three at the same angle as the tap threads 5 inside the support guide column 1 .

[0044] In the process of using the tap for tapping, the high-strength tensile fiber 6 will share the torque generated by the tap when it is working, reducing the possibility of the tap being damaged or broken due to excessive torque during operation, and protecting the tap to a certain extent.

[0045] Embodiment three:

[0046] like Figure 5 , Figure 6 and Figure 7 The technical solution shown in the figure, the utility model provides the following technical solution: non-standard T-type tap, discloses anti-oxidation coating 7 and wear-resistant coating 8, and the service life of the tap is further improved by anti-oxidation coating 7 and wear-resistant coating 8:

[0047] An anti-oxidation coating 7 is provided on the outer surface of the support guide column 1, and a wear-resistant coating 8 is provided on the outer surface of the anti-oxidation coating 7; the anti-oxidation coating 7 is made of a TiSiN nano-coating and a CrAlN nano-coating, and the TiSiN nano-coating and the CrAlN nano-coating are alternately deposited on the outer surface of the support guide column 1; the wear-resistant coating 8 is a boron nitride hard coating and an aluminum oxide hard coating, and the wear-resistant coating 8 completely wraps the anti-oxidation coating 7;

[0048] The wear-resistant coating 8 adopts a double-layer design of boron nitride hard coating and aluminum oxide hard coating, which further improves the strength of the outer surface of the support guide pillar 1, improves the wear resistance of the support guide pillar 1, and enhances the service life and use effect of the support guide pillar 1. The anti-oxidation coating 7 adopts TiSiN nano-coating and CrAlN nano-coating, which improves the high-temperature oxidation resistance of the support guide pillar 1 to a certain extent, greatly improves the service life of the tap. At the same time, the TiSiN nano-coating and CrAlN nano-coating do not contain any harmful components and are safe and environmentally friendly.

[0049] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-standard T-type tap, comprising a support guide column (1), wherein the top end of the support guide column (1) is fixedly connected to a front cone (2), and the bottom end of the support guide column (1) is fixedly connected to a connecting portion (3); Features: Also includes: A chip groove (4), wherein the chip groove (4) is arranged on the outer side of the upper end of the support guide column (1); A tap thread (5), wherein the tap thread (5) is fixedly connected to the outer side of the support guide column (1); High-strength tensile fiber (6), wherein the high-strength tensile fiber (6) penetrates from the top of the support guide column (1) to the bottom of the support guide column (1).

2. The non-standard T-tap according to claim 1, characterized in that: The chip grooves (4) are arranged in a circular array in three parts with respect to the center point of the supporting guide column (1), and the interior of the chip grooves (4) is designed to be arc-shaped.

3. The non-standard T-tap according to claim 1, characterized in that: The tap threads (5) are arranged in three circular arrays about the center point of the support guide column (1), and the tap threads (5) are arranged relatively closely, and a chip groove (4) is provided between two rows of chip grooves (4).

4. The non-standard T-tap according to claim 1, characterized in that: The high-strength tensile-resistant fibers (6) are arranged in groups of three at the same angle as the tap threads (5) and inside the support guide column (1).

5. The non-standard T-tap according to claim 1, characterized in that: An anti-oxidation coating (7) is provided on the outer surface of the support guide column (1), and a wear-resistant coating (8) is provided on the outer surface of the anti-oxidation coating (7).

6. The non-standard T-tap according to claim 5, characterized in that: The anti-oxidation coating (7) is made of a TiSiN nano-coating and a CrAlN nano-coating, and the TiSiN nano-coating and the CrAlN nano-coating are alternately deposited on the outer surface of the support guide column (1).

7. The non-standard T-tap according to claim 5, characterized in that: The wear-resistant coating (8) is a boron nitride hard coating and an aluminum oxide hard coating, and the wear-resistant coating (8) completely wraps the anti-oxidation coating (7).

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