CN201186364Y

CN201186364Y - Self-clinching fastener of pull broach

Info

Publication number: CN201186364Y
Application number: CNU200720133673XU
Authority: CN
Inventors: 颜疆远
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-29
Filing date: 2007-12-29
Publication date: 2009-01-28
Anticipated expiration: 2017-12-29

Abstract

The utility model relates a self-fastening clamping head of a broach, which comprises a body and a jacket, wherein a center bore is provided in the inner of the body. The clamping head is characterized in that the body is further provided with two clamping holes which are corresponding to each other, wherein a slide block is respectively arranged in each of the clamping holes, a back spring is arranged between the two ends of the two slide blocks, which are relative with each other, and the two ends of the two slide blocks, which are opposite with each other are matched with an upper oblique sliding groove of the jacket. The utility model has the advantages of more convenient manufacture and use, and more accurate positioning.

Description

A kind of self-clinching fastener of broaching tool

Technical field

The utility model relates to a kind of chuck, specifically is a kind of self-clinching fastener of broaching tool.

Background technology

Broaching tool self-clinching fastener at present commonly used is of a great variety, but these chuck ubiquity chucking power deficiencies, the shortcoming that positioning performance is not good, the applicant also applies for before this and the utility model patent that is authorized to (patent No. is: ZL200620107524.1) deficiency that exists in conjunction with existing chuck is improved, this chuck mainly comprises the chuck body, at body outside socket one overcoat, the overcoat top is installed in meeting and discussing of broaching machine workbench bottom and offsets griffing Shi Keyu, described body interior is provided with centre bore, the body head is provided with a plurality of be communicated with centre bore and around the equally distributed clamping hole of centre bore circumference, each clamping hole the inside all is provided with a slide block and steel ball, the outer middle side part of described body is provided with two boss, wherein the convex platform diameter is greater than the body head diameter and less than the lower convex platform diameter, and the bottom faces of lower convex platform and slide plate upper surface offset, match with the lower convex platform at body middle part in described overcoat endoporus aperture, endoporus top is provided with an annular lip, the flange internal diameter matches with the body head, its be provided with one can with the corresponding back taper type of body clamping hole groove, be provided with between the upper surface of flange bottom face and body lower convex platform one the compression spring; The generation of phenomenons such as that the chuck after the improvement has is simple to operate, clamping speed fast and the characteristics of good positioning effect, but this folder exists manufacturing process cumbersome simultaneously, and the chucking power of chuck is still waiting to improve, and slide block is stuck easily simultaneously.

The utility model content

The purpose of this utility model be to provide a kind of easily manufactured, use convenient pulling chuck, the slide block of this chuck adopts the two pass endoporus, griffe or upper slitter in the slide block scope of activities of minimum, slide block is tightly held tightly around broaching tool simultaneously, and it is more accurate to locate.

The utility model is achieved in that

A kind of self-clinching fastener of broaching tool, comprise body and overcoat, have centre bore in body interior, it is characterized in that: also be provided with two corresponding clamping holes on the described body, be equipped with slide block in each clamping hole, two slide blocks are provided with returning spring between the relative end, two slide blocks end in opposite directions with put oblique chute outward and match.

Described slide block is provided with the folder mouth, replys hole and locating convex block, the both sides of folder mouth are located in described answer hole, on the relative answer hole of two slide blocks, be provided with a returning spring, and locating convex block is located at and rightabout the other end of pressing from both sides mouthful on, and match with oblique chute.

Described folder mouthful employing two pass endoporus, this folder mouth has two kinds of radius length, and center folder port radius is less than the radius of two side clamp ports of both sides.

Described overcoat is made up of outer cap bag and overcoat body, outer cap bag is connected in the top of overcoat body, the outside at described overcoat also is provided with a projection, also be socketed with duster coat on the coat, duster coat and this projection closely cooperate, the bottom and the base plate of duster coat are connected, and base plate is connected on the chuck body, also are provided with spring between projection outside the overcoat body and the base plate.

The utility model matches by meeting and discussing on outer cap bag and the workbench and realizes that moving down of overcoat realize opening of slide block, and the elastic force by spring between bottom and the overcoat makes what the slide block return was held tightly simultaneously; Chuck volume of the present utility model increases relatively to some extent, clamping hole processing is more convenient, the folder mouth of chuck adopts the two pass endoporus, can realize griffing and upper slitter this method of clamping of holding tightly of slide block in the slide block scope of minimum, it is more accurate to locate, simultaneously adopt returning spring between the slide block, lighter when griffing, in the outside also socket of overcoat duster coat, anti-bits performance is improved, and has improved the reliability when chuck uses.

Description of drawings

Fig. 1 is the utility model structural representation;

Structural representation when Fig. 2 clamps for the utility model slide block;

Fig. 3 is the internal structure schematic diagram of chuck body.

Fig. 4 is the structural representation of slide block

Fig. 5 is the side-view of slide block;

Fig. 6 is a slide block internal structure schematic diagram.

The specific embodiment

Shown in Fig. 1-6, a kind of self-clinching fastener of broaching tool, comprise body 1 and overcoat 2, have centre bore 11 in body 1 inside, also be provided with two corresponding clamping holes 12 on the described body 1, be equipped with slide block 3 in each clamping hole 12, described slide block 3 is provided with folder mouth 31, replys hole 32 and locating convex block 33, the both sides of folder mouth 31 are located in described answer hole 32, between two slide blocks 3, be provided with a returning spring 4 in the relative answer hole, and locating convex block 33 is located at and presss from both sides on rightabout the other end of mouth 31, and matches with oblique chute 23 on the overcoat 2; Described folder mouthful 31 employing two pass endoporus, this folder mouth has two kinds of radius length, and center folder port radius is less than the radius of two side clamp ports of both sides.

Described overcoat 2 is made up of outer cap bag 21 and overcoat body 22, outer cap bag 21 is connected in the top of overcoat body 22, also be provided with a projection 24 in the outside of described overcoat body 22, on the overcoat body, also be socketed with duster coat 5, duster coat 5 closely cooperates with this projection 24, the bottom of duster coat 5 and base plate 6 are connected, and base plate 6 is connected on the chuck body 1, also are provided with spring 7 between the projection 24 in overcoat body 22 outsides and base plate 6.

When the utility model is griffed, the outer cap bag 21 at overcoat top contacts with meeting and discussing of workbench, spring 7 between compression garment body 2 and the base plate 6 makes overcoat 2 move down with respect to chuck body 1, this moment, slide block 3 was expanded to both sides at the active force of returning spring 4, locating convex block 33 on the slide block 3 slides into the bosom of oblique chute 23 on the overcoat 2, this moment, the folder mouth 31 of slide block 3 unclamped the original broaching tool of tightly holding tightly already, griffed very convenient light; In the time of need holding broaching tool tightly, the outer cap bag 21 and the disengaging of meeting and discussing, overcoat 2 is upwards pushed up under the effect of spring 7, move on the overcoat 2 relative chuck bodies 2, the locating convex block 33 of slide block 3 is along with slide from the bosom to more shallow on the plane, slope of oblique chute 23, the folder mouth of two slide blocks 3 is also slowly held tightly relatively simultaneously, tightly broaching tool is held tightly at last.

The folder mouth 31 of slide block 3 of the present utility model adopts the two pass endoporus, folder mouth with two kinds of different radiis, can make and realize in the minimum slide block moving range griffing and upper slitter, the folder mouthful chucking power that packs tightly is better simultaneously, it is more accurate to locate, the locating convex block 33 of slide block 3 surface that contacts with oblique chute 23 is designed to the transition face of non-rule in addition, and this design can prevent the generation of stuck situation during with oblique chute 23 relative sliding at slide block 3.

Another characteristics of the utility model in the outside of overcoat 2 also socket duster coat 5, this duster coat 5 can play imitates good dustproof anti-bits effect, improves the chuck reliability during operation.

Claims

1, a kind of self-clinching fastener of broaching tool, comprise body and overcoat, have centre bore in body interior, it is characterized in that: also be provided with two corresponding clamping holes on the described body, be equipped with slide block in each clamping hole, two slide blocks are provided with returning spring between the relative end, two slide blocks end in opposite directions with put oblique chute outward and match.

2, the self-clinching fastener of a kind of broaching tool as claimed in claim 1, it is characterized in that: described slide block is provided with the folder mouth, replys hole and locating convex block, the both sides of folder mouth are located in described answer hole, on the relative answer hole of two slide blocks, be provided with a returning spring, and locating convex block is located at and rightabout the other end of pressing from both sides mouthful on, and match with oblique chute.

3, the self-clinching fastener of a kind of broaching tool as claimed in claim 2 is characterized in that: described folder mouthful employing two pass endoporus, and this folder mouth has two kinds of radius length, and center folder port radius is less than the radius of two side clamp ports of both sides.

4, as the self-clinching fastener of any described a kind of broaching tool of claim 1 to 3, it is characterized in that: described overcoat is made up of outer cap bag and overcoat body, outer cap bag is connected in the top of overcoat body, the outside at described overcoat also is provided with a projection, also be socketed with duster coat on the coat, duster coat and this projection closely cooperate, and the bottom and the base plate of duster coat are connected, and base plate is connected on the chuck body, also is provided with spring between projection outside the overcoat body and the base plate.