CN203578959U - Multi-blade screw tap - Google Patents

Abstract

The utility model relates to a multi-piece blade tap, it has a clamping part, a blade holder, two at least attack tooth blade and two at least mountings, and the clamping part is a cylinder structure and for the centre gripping fixed area of processing machines, and the blade holder setting is in the one end of clamping part and is equipped with two at least device grooves, and each device groove is used for the installation to set up attacks the tooth blade, penetrates again and sets up the mounting in attacking the tooth blade and fix in the device groove to accomplish the combination of multi-piece blade tap, in practical application, the utility model discloses change the tooth blade of attacking of corresponding specification to satisfy different processing demands, when attacking the tooth blade and damaging, only need change the blade part, then clamping part and blade holder repeatedly usable, through the setting of changing the blade, the utility model discloses can save the purchase and eliminate and become originally, and have more the practicality.

Description

Multi-piece blade screw tap

technical field

The utility model relates to a screw tap, in particular to a screw tap with replaceable multi-blade blades which can cut materials.

Background technique

Screw tapping tools are common in the traditional processing industry. This type of tool is used to process screw holes. The existing screw tapping knives have an integrated blade. However, the blades of the same aperture can be divided into two types: straight and inclined. For different processing purposes, there are also differences in the specifications of the screw teeth in the blade. According to the difference in the distance between the screw teeth, it can be divided into metric system, imperial system and American system. In order to meet different processing purposes and process screw holes of different specifications, it is necessary to purchase Screw tapping tools of various specifications, in order to store different specifications of screw tapping tools, it is necessary to have additional storage space, which increases the cost. In addition, screw tapping tools are often used in the processing of metal materials. Because metal materials are relatively hard, screw tapping tools are used for a long time. During the machining process, the strength of the blade portion will gradually decrease and it is prone to chipping. When the blade is damaged, the entire screw tapping tool needs to be replaced, which has the disadvantage of high replacement cost.

Utility model content

In order to solve the above-mentioned shortcomings of the prior art, the utility model improves the screw tapping tool of the prior art, and provides a multi-blade screw tap, so as to achieve replacement of blades of various specifications and effectively reduce the cost of construction and replacement. cost purposes.

In order to achieve the purpose of the above-mentioned utility model, the technical means adopted in the utility model is to design a kind of multi-blade screw tap, which includes:

a clamping part, which is a cylinder;

A blade seat, which is arranged at an end surface of the clamping part, the blade seat has at least two device grooves, and each device groove is located at an opposite position, and is concavely formed on the peripheral wall surface of the blade seat and runs through the end of the blade seat , the device groove has two adjacent inner wall surfaces, and a fixing hole formed on the inner wall surface of the device groove;

At least two tapping blades, the tapping blades are arranged in each device slot of the blade seat, the tapping blades have a perforation, a plurality of cutting edges and a plurality of wiper edges, the perforations are formed on the tapping blade and correspond to the device The fixing hole of the groove, each cutting edge and each wiper edge are formed on the tapping insert;

There are at least two fixing pieces, the fixing pieces pass through the through holes of each tapping blade and are fixed in the fixing holes of each device slot.

Said multi-blade screw tap, wherein each cutting edge and each wiper edge of each tapping blade are formed on the same side wall surface of the tapping blade and protrude out of the blade seat.

The multi-piece blade screw tap, wherein the blade seat has two device grooves, the two adjacent outer wall surfaces of the tapping blade are provided with a clamping angle, and the two adjacent side wall surfaces of the tapping blade are engaged in the device groove Two adjacent inner wall surfaces of . Said multi-piece blade screw tap, wherein the blade seat has three device grooves, and the distance between the three device grooves of the blade seat is equal.

Said multi-piece blade screw tap, wherein the blade seat has four device grooves, and the intervals between the four device grooves are equal.

In the multi-blade screw tap, the fixing member is a screw and the fixing hole is a screw hole with an internal thread, and each screw penetrates the perforation of the tapping blade and is locked and fixed in each screw hole.

The beneficial effects of the utility model are: the utility model is provided with a blade seat at the end of the clamping part, and the blade seat is provided with more than two device grooves, and then each tapping blade is set and fixed in each device groove and its cutting Both the cutting edge and the wiper edge protrude from the blade seat, thus completing the combination of multi-blade screw taps. In practical applications, the multi-blade screw taps can replace tapping blades of corresponding specifications to meet different tooth pitches. The combination of a set of clamping part and insert seat can be matched with tapping inserts of different specifications. In addition, when the tapping insert is damaged, it can be used again only by replacing it with a new tapping insert. The utility model has the characteristic of replacing the tapping blade, so it can effectively reduce the purchase and replacement cost of the screw tapping tool. If more than two device grooves are set on the blade holder, then the blade holder can be installed with more than two tapping blades. degree of stability.

Description of drawings

Fig. 1 is a perspective view of the appearance of the first embodiment of the utility model.

Fig. 2 is an exploded view of the first embodiment of the utility model.

Fig. 3 is a front partial perspective view of the first embodiment of the utility model.

Fig. 4 is a top sectional view of the tapping blade and the tool seat according to the first embodiment of the present invention.

FIG. 5 is a top sectional view of a tapping blade and a tool seat according to a second embodiment of the present invention.

6 is a top sectional view of a tapping blade and a tool seat according to a third embodiment of the present invention.

Symbol Description:

10 clamping part 20 blade seat

21 Device slot 211 Fixing hole

30 tapping blade 31 piercing

32 cutting edge 33 wiper edge

40 Fixing piece 20A Blade seat

21A device slot 211A fixing hole

20B blade seat 21B device slot

211B fixing hole.

Detailed ways

The technical means adopted by the utility model to achieve the intended purpose of the utility model are further elaborated below in conjunction with the accompanying drawings and preferred embodiments of the utility model.

Please refer to FIG. 1 and FIG. 3 , the multi-blade screw tap according to the first embodiment of the present invention includes a clamping portion 10 , a blade seat 20 , two tapping blades 30 and two fixing parts 40 .

Please refer to FIG. 1 and FIG. 2 , the aforementioned clamping portion 10 is a cylinder, and the clamping portion 10 is a clamping and fixing area of the processing tool.

Please refer to Fig. 2, Fig. 3 and shown in Fig. 4, aforesaid blade seat 20 is arranged at one end face place of clamping part 10, and blade seat 20 has two device slots 21 and is positioned at two relative positions, each device slot 21 Concave is formed on the peripheral wall surface of the blade holder 20 and runs through one side end surface of the blade holder 20. The device groove 21 is formed with two adjacent inner wall surfaces with a clamping angle. Each device groove 21 has a fixing hole 211, and the fixing hole 211 It is located at one of the inner side walls of the device groove 21 .

The aforementioned tapping blade 30 is arranged in the blade seat 20, and the adjacent two outer wall surfaces of the tapping blade 30 are provided with a clamping angle, and the adjacent two side wall surfaces of the tapping blade 30 are engaged in two adjacent inner sides of the device groove 21 On the wall, each tapping blade 30 has a perforation 31, a plurality of cutting edges 32 and a plurality of wiper edges 33, the perforations are formed in the tapping blade 30 and correspond to the fixing holes 211 of the device groove 21, each cutting edge 32 and each wiper The edge 33 is formed on the same side wall of the tapping insert 30 , and each cutting edge 32 and each wiper edge 33 protrude from the insert holder 20 .

The above-mentioned fixing parts 40 are inserted into the perforations 31 of the tapping blades 30 and fixed in the fixing holes 211 of the device grooves 21. In a preferred embodiment, the fixing parts 40 can be screws and the fixing holes 211 are a There are screw holes with internal threads, and each screw penetrates the through hole 31 of the tapping blade 30 and is locked and fixed in the screw hole of each fixing hole 211 .

Through the setting of the device slot 21 of the blade seat 20, the utility model becomes a multi-blade screw tap that can be freely disassembled and replaced with the tapping blade 30. In addition, when the tapping blade 30 is damaged during processing, it only needs to replace the blade part of the utility model to continue processing without replacing the whole set. The screw tapping tool can effectively reduce the purchase and replacement cost of the tool because the utility model has the above two characteristics.

Please refer to Fig. 5, which is the second embodiment of the present utility model, further provided with a blade holder 20A, three tapping blades 30 and three fixing parts 40, the blade holder 20A is connected to one end surface of the clamping portion 10 and There are three device grooves 21A, the distance between the three device grooves 21A on the blade seat 20A is equal, and a fixing hole 211A is formed on the wall surface of each device groove 21A, and each tapping blade 30 is installed on each device respectively. In the groove 21A, each fixing piece 40 penetrates the through hole 31 of each tapping blade 30 and is fixed in the fixing hole 211A of each device groove 21A.

Please refer to Fig. 6, which is the third embodiment of the present utility model, further provided with a blade holder 20B, four tapping blades 30 and four fixing parts 40, the blade holder 20B is connected to one end surface of the clamping portion 10 and There are four device grooves 21B, the distance between the four device grooves 21B on the blade seat 20B is equal, and a fixing hole 211B is formed on the wall surface of each device groove 21B, and each tapping blade 30 is installed and arranged on each In the device groove 21B, each fixing piece 40 penetrates through the perforation 31 of each tapping blade 30 and is fixed in the fixing hole 211B of each device groove 21B.

The above descriptions are only preferred embodiments of the utility model, and do not impose any formal restrictions on the utility model. However, the utility model has been described as above with preferred embodiments, but it is not used to limit the utility model. Those of ordinary skill in the technical field, without departing from the technical scope of the present utility model, can use the above-mentioned technical contents to propose equivalent embodiments for changing or modifying equivalent changes. Any simple modifications, equivalent changes and modifications made by the technology of the utility model to the above embodiments still belong to the scope of the technical solution of the utility model.

Claims (6)

1. A multi-blade screw tap, characterized in that it comprises: a clamping part, which is a cylinder; A blade seat, which is arranged at an end surface of the clamping part, the blade seat has at least two device grooves, and each device groove is located at an opposite position, and is concavely formed on the peripheral wall surface of the blade seat and runs through the end of the blade seat , the device groove has two adjacent inner wall surfaces, and a fixing hole formed on the inner wall surface of the device groove; At least two tapping blades, the tapping blades are arranged in each device slot of the blade seat, the tapping blades have a perforation, a plurality of cutting edges and a plurality of wiper edges, the perforations are formed in the tapping blade and the corresponding device The fixing hole of the groove, each cutting edge and each wiper edge are formed on the tapping insert; There are at least two fixing pieces, the fixing pieces pass through the through holes of each tapping blade and are fixed in the fixing holes of each device slot. 2. The multi-blade screw tap according to claim 1, wherein each cutting edge and each wiper edge of each tapping blade are formed on the same side wall surface of the tapping blade and protrude from the blade outside the seat. 3. The multi-blade screw tap according to claim 2, wherein the blade seat has two device grooves, two adjacent outer wall surfaces of the tapping blade are provided with clamping angles, and the tapping blade The two adjacent side walls of the device are joined to the two adjacent inner side walls of the device groove. 4 . The screw tap with multiple blades according to claim 2 , wherein the blade seat has three device grooves, and the distances between the three device grooves of the blade seat are equal. 5 . The multi-blade screw tap according to claim 2 , wherein the blade holder has four device slots, and the intervals between the four device slots are equal. 6 . 6. The multi-blade screw tap according to any one of claims 3 to 5, wherein the fixing member is a screw and the fixing hole is a screw hole with an internal thread, and each screw penetrates the tapping blade The perforation and locking are fixed in each screw hole.

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