CN218503473U

CN218503473U - Blade type combined narrow groove broach

Info

Publication number: CN218503473U
Application number: CN202222293643.2U
Authority: CN
Inventors: 周兴伟
Original assignee: CSG TRW Chassis Systems Co Ltd
Current assignee: CSG TRW Chassis Systems Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-02-21
Anticipated expiration: 2032-08-30

Abstract

The utility model relates to a blade formula combination slot broach belongs to broach technical field, including little blade holder and blade, the constant head tank has been seted up to the little blade holder, and the blade is the carbide material, and the blade is equipped with conical screw hole, and locking screw passes the screw hole and with blade fixed connection in the constant head tank, and the blade has eight, and the shape of every blade just is equipped with the three sword tooth that exchanges and use for equilateral triangle, and the sword tooth has 5 anterior angle and 3 relief angles, and the sword tooth rake face possesses the circular arc chip groove that the radius is R2.5, and the tooth lift of sword tooth is 0.125mm. According to the invention, the tool apron is connected with the plurality of detachable blades through the plurality of locking screws, the cutter teeth of each blade can be interchanged for use, the service life of the tool is long, the cutter teeth are easy to switch and adjust, and the production cost is reduced.

Description

Blade type combined narrow groove broach

Technical Field

The utility model belongs to the technical field of the broach, a blade formula combination narrow groove broach is related to.

Background

The broach is a common cutting tool in machining, and moves linearly along an axis when working, and the number of the cutting edges on the tool body is determined by the machining allowance. For a narrow groove broach with the width of a processed part being 1mm, the traditional integral cutter is easy to crack during heat treatment and has other manufacturing difficulties; when the cutter is used, the cutter teeth are easy to damage due to reasons such as poor strength of the cutter and the like, and the service life of the cutter is low; and traditional broach all is a whole, and after a certain sword tooth of broach damages, need change whole broach, lead to the high cost of production.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a blade formula combination slot broach is connected with a plurality of detachable blades through a plurality of locking screw on the blade holder, and the sword tooth of every blade all can exchange the use, uses cutter processing long-lived, and the sword tooth switches the adjustment easily, reduction in production cost.

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

the utility model provides a blade formula combination slot broach, includes little blade holder, the constant head tank has been seted up to little blade holder, be connected with the blade through locking screw in the constant head tank, the blade has the multi-disc, the multi-disc the blade all is equipped with a plurality of sword teeth that exchange and use.

Furthermore, eight blades are provided, and the tooth lifting amount of the teeth of the eight blades is 0.125mm.

Further, the shape of blade is equilateral triangle and is equipped with three interchange sword tooth of using, the sword tooth has 5 anterior angles and 3 relief angles, sword tooth rake face possesses the circular arc chip groove that the radius is R2.5.

Furthermore, the blade is provided with a conical screw hole, and the locking screw penetrates through the screw hole to connect the locking screw with the small knife seat.

Further, the blade is made of hard alloy materials.

The beneficial effects of the utility model reside in that:

1. the utility model provides a blade type combined narrow groove broach, which has simple structure, low manufacturing cost, convenient installation and simple and rapid adjustment, and only needs to update the blade when the broach is worn; the cutter teeth of each blade can be interchanged for use, the service life of the cutter is long, the cutter teeth are easy to switch and adjust, and the production cost is reduced;

2. the cutter teeth of the blade have a front angle of 5 degrees and a rear angle of 3 degrees, the front cutter face is provided with an arc chip rolling groove with the radius of R2.5, and the chip rolling effect is good;

3. the blade is provided with three interchangeable cutter teeth and is made of hard alloy materials, so that the service life of the blade is greatly prolonged and is 5-8 times of that of the traditional integral cutter;

4. the conical screw hole arranged on the blade can effectively eliminate a positioning gap, so that the blade is reliably clamped.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings, wherein:

fig. 1 is a schematic structural view of a blade type combined narrow groove broach according to the present invention;

fig. 2 is a schematic structural view of a blade type combined narrow groove broach blade of the present invention;

FIG. 3 is a schematic view of the blade type combined narrow groove broach installed on the broach holder according to the present invention;

reference numerals are as follows: the tool comprises a small tool apron 1, a blade 2, a locking screw 3, a broach seat 4 and a processing workpiece 5.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can be implemented or applied by other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustration only and not for the purpose of limiting the invention, the figures are shown in schematic form and not in pictorial form; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "front", "back", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes, and should not be construed as limitations of the present invention, and it will be understood that specific meanings of the above terms can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 and 2, the blade type combined narrow groove broach comprises a small blade holder 1 and blades 2, wherein the small blade holder 1 is provided with a positioning groove, the blades 2 are made of hard alloy materials, the blades 2 are provided with conical screw holes, locking screws 3 penetrate through the screw holes to fixedly connect the blades 2 in the positioning groove, the blades 2 are eight, each blade 2 is in an equilateral triangle shape and is provided with three interchangeable cutter teeth, each cutter tooth has a front angle of 5 degrees and a rear angle of 3 degrees, a front cutter face of each cutter tooth is provided with an arc chip reeling groove with a radius of R2.5, and the tooth lifting amount of each cutter tooth is 0.125mm.

The specific implementation process is as follows:

referring to fig. 3, the small tool apron 1 of the present piece type combined narrow groove broach is mounted on the broach tool apron 4, and the broaching processing is performed on the processing workpiece 5 in the direction F; each blade 2 is provided with three interchangeable cutter teeth, and is made of hard alloy materials, so that the service life of the blade 2 is greatly prolonged and is 5-8 times of that of the traditional integral cutter; the cutter teeth of the blade 2 have a front angle of 5 degrees and a rear angle of 3 degrees, the front cutter face is provided with an arc chip reeling groove with the radius of R2.5, and the chip reeling effect is good; when three cutter teeth of one cutter blade 2 are worn, the locking screw 3 is unscrewed to replace the cutter blade 2, and the conical screw hole arranged on the cutter blade 2 can effectively eliminate the positioning clearance, so that the cutter blade 2 is reliably clamped.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A blade formula combination narrow groove broach which characterized in that: the novel knife holder is characterized by comprising a small knife holder (1), wherein a positioning groove is formed in the small knife holder (1), a blade (2) is connected into the positioning groove through a locking screw (3), the blade (2) is provided with a plurality of blades, and the blades (2) are all provided with a plurality of interchangeable knife teeth.

2. The insert type combined narrow groove broach according to claim 1, characterized in that: eight blades (2) are provided, and the tooth lifting amount of the teeth of the eight blades (2) is 0.125mm.

3. The blade type combined narrow groove broach according to claim 1, characterized in that: the shape of blade (2) is equilateral triangle and is equipped with three interchange sword tooth of using, the sword tooth has 5 anterior angles and 3 relief angles, sword tooth rake face possesses the circular arc chip groove that the radius is R2.5.

4. The insert type combined narrow groove broach according to claim 1, characterized in that: the blade (2) is provided with a conical screw hole, and the locking screw (3) penetrates through the screw hole to be connected with the small cutter seat (1).

5. The insert type combined narrow groove broach according to claim 1, characterized in that: the blade (2) is made of hard alloy materials.