CN202824715U

CN202824715U - Internal expanding clamp

Info

Publication number: CN202824715U
Application number: CN 201220303612
Authority: CN
Inventors: 于建国; 华柏江; 黄颖芬
Original assignee: Shaoguan No2 Technician College
Current assignee: Shaoguan No2 Technician College
Priority date: 2012-06-26
Filing date: 2012-06-26
Publication date: 2013-03-27
Anticipated expiration: 2022-06-26

Abstract

The utility model relates to an internal expanding clamp which comprises a Morse cone and a clamp main body which is in a columnar structure. A taper hole is thoroughly arranged along the axial direction of the clamp main body. A ring groove is formed in the outer surface of the clamp main body. The clamp main body is divided into at least three clamping pieces along the periphery direction. Morse cone through holes are formed in the Morse cone. The axes of the Morse cone through holes are perpendicular to the end faces of the clamping pieces. An adjusting screw is arranged in each Morse cone through hole. Each adjusting screw is connected with an ejector rod through a pressing spring. Each ejector is connected with the end face of one clamping piece in an abutting mode. A cock body which is used for matching with the taper hole is arranged at the end portion of the Morse cone. The clamp main body forms a fastening structure through the cock body and tension springs which are arranged in the ring groove. A fastening bolt which is used for fixing the clamp main body is arranged on the end face of the cock body in a connecting mode. The internal expanding clamp has the advantages of being capable of effectively clamping thin-wall workpieces and preventing the thin-wall workpieces from deforming in the machining process. By adopting the internal expanding clamp, a lathe is capable of greatly improving efficiency of machining the thin-wall workpieces.

Description

A kind of interior swollen anchor clamps

Technical field

The utility model relates to a kind of frock clamp, more specifically, relates to a kind of interior swollen anchor clamps.

Background technology

Prior art is when processing thin-walled workpiece, usually utilize the cylindrical turning endoporus of scroll chuck folder thin-wall workpiece or increase technique rib processing work cylindrical, but because the poor rigidity of thin-wall workpiece (the especially following thin-wall workpiece of wall thickness 5mm) own, its process very easily is out of shape, particularly, as manufacturing process following defective is arranged with prior art: 1, the distortion of workpiece itself can affect dimensional accuracy and the form accuracy of workpiece, increases the difficulty that the technique rib can increase the cutting endoporus greatly; 2, because the thinner heat in metal cutting of workpiece wall can cause the workpiece thermal deformation, make workpiece size be difficult to control; 3, especially be under the effect of back force, very easily to produce vibration, noise and distortion at cutting force, directly affect dimensional accuracy, the form and position tolerance of workpiece, and surface roughness.

The utility model content

The purpose of this utility model just provides a kind of interior swollen anchor clamps for processing thin-walled workpiece, adopts and should can avoid the thin-wall workpiece distortion by interior swollen anchor clamps, improves simultaneously working (machining) efficiency.

In order to achieve the above object, adopt following technical scheme:

A kind of interior swollen anchor clamps, comprise Morse's cone and jig main body, described jig main body is column structure, it in axial direction runs through and is provided with bellmouth, be provided with annular groove at outer surface, described jig main body is divided into three folder lobes in the circumferential direction of the circle at least, the Morse's cone through hole is set on the described Morse's cone, the axis of described Morse's cone through hole is perpendicular to the end face of folder lobe, be provided with adjustment screw in the described Morse's cone through hole, described adjustment screw links to each other with push rod by stage clip, described push rod is connected to the end face of folder lobe, described Morse's cone also is provided with the cock body that matches for described bellmouth in the end, described jig main body forms fastening structure by cock body and the extension spring that is arranged in the annular groove, links to each other with the end face of described cock body also to be provided with hold-down bolt for the stationary fixture main body.

Further, described cock body has the cock body screwed hole at end face, and described jig main body is being provided with electrolysis near hold-down bolt one side, and described hold-down bolt is fixed and compresses jig main body by described electrolysis.

Again further, the axial line of the axial line of described bellmouth and jig main body coincides.

Also further, described Morse's cone is provided with boss at the cock body bottom position, and described Morse's cone through hole is arranged on the described boss.

As a kind of specific embodiment, the diameter of section of described extension spring is less than the height of annular groove.

Further, the quantity of described annular groove is at least two.

As a kind of specific embodiment, the quantity of described folder lobe is 3,5,7 or 9.

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

Employing is divided into the jig main body that presss from both sides lobe, can adapt to the thin-wall workpiece of different inner diameters; Adopt the Morse's cone that cooperates with jig main body, can make jig main body produce radial load, thus the support fixture main body; The hold-down bolt that employing is arranged at the cock body end face comes the compressing fixture main body, makes clamping force along the axial distribution of jig main body, prevents from avoiding the thin-wall workpiece endoporus to produce the radial clamping distortion; Interior swollen anchor clamps described in the utility model can effectively carry out clamping and avoid it to deform in process thin-wall workpiece, adopt this interior lathe that expands anchor clamps also can greatly improve the efficient of machining thin-wall workpiece.

Description of drawings

Fig. 1 is the working state schematic representation of interior swollen anchor clamps described in the utility model.

Fig. 2 is the jig main body perspective view of interior swollen anchor clamps described in the utility model.

Fig. 3 is the axial cutaway view of the jig main body of interior swollen anchor clamps described in the utility model.

Fig. 4 is the force analysis schematic diagram of interior swollen anchor clamps described in the utility model.

Among the figure: the 1-Morse's cone; 2-Morse's cone boss; The 3-adjustment screw; The 4-stage clip; The 5-push rod; The 6-guide pin bushing; 7-presss from both sides lobe; The 8-extension spring; The 9-thin-wall workpiece; The 10-cock body; The 11-seal face; The 12-hold-down bolt, 13-cock body screwed hole; 14-Morse's cone through hole; The 15-bellmouth; The 16-annular groove; Jig main body-100.

The specific embodiment

Referring to Fig. 1-Fig. 3, interior swollen anchor clamps described in the utility model, comprise Morse's cone 1 and jig main body 100, described Morse's cone 1 is No. 6 Morse's cones, described jig main body 100 is column structure, it in axial direction runs through and is provided with bellmouth 15, be provided with annular groove 16 at outer surface, described jig main body 100 is divided into three folder lobes 7 in the circumferential direction of the circle at least, on the described Morse's cone 1 Morse's cone through hole 14 is set, the axis of described Morse's cone through hole 14 is perpendicular to the end face of folder lobe 7, be provided with adjustment screw 3 in the described Morse's cone through hole 14, described adjustment screw 3 links to each other with push rod 5 by stage clip 4, described jig main body 100 is offering 5 road grooves near Morse's cone 1 one ends, described push rod 5 and described groove butt, described Morse's cone 1 also is provided with the cock body 10 that matches for described bellmouth 15 in the end, described jig main body 100 forms fastening structures by cock body 10 and the extension spring 8 that is arranged at annular groove 16, links to each other with the end face of described cock body 10 also to be provided with hold-down bolt 12 for stationary fixture main body 100.

Described cock body 10 has cock body screwed hole 13 at end face, described jig main body 100 is being provided with electrolysis 11 near hold-down bolt 12 1 sides, the nut of described hold-down bolt 12 is fixed and compresses by 11 pairs of jig main bodies 100 of described electrolysis, the axial line of the axial line of described bellmouth 15 and jig main body 100 coincides, described Morse's cone 1 is provided with round boss 2 at cock body 10 bottom positions, described Morse's cone through hole 14 is arranged on the described boss 2, the diameter of section of described extension spring 8 is less than the height of annular groove 16, the quantity of described annular groove 16 is at least two, the quantity of described folder lobe 7 is 3,5,7 or 9, folder lobe 7 evenly is divided into jig main body corresponding of the quantity of pressing from both sides lobe 7, in the present embodiment, the quantity of folder lobe 7 is 5, and the covering of the fan angle of 7 corresponding jig main body 100 axis of each folder lobe is 72 degree.

Referring to Fig. 4, interior swollen anchor clamps described in the utility model are when supporting thin-wall workpiece 9, first extension spring 8 is inserted in the annular groove 16 in jig main body 100 outsides, make and respectively press from both sides lobe 7 and be combined as roughly cylindrical-shaped structure, the chock plug that will be positioned at again Morse's cone 1 head gos deep into the bellmouth 15 of jig main body 100, then jig main body 100 is fixed by the hold-down bolt 12 that is arranged at cock body 10 ends, after this jig main body 100 is put into the inner chamber of thin-wall workpiece 9, drive adjustment screw 3 and compress push rod 5, cooperate the effect of hold-down bolt 12, make Morse's cone 1 chock plug 10 crushing clamp lobes 7 inwall and make folder lobe 7 be expanded to the state of butt thin-wall workpiece 9 inwalls, thereby to expand from inside to outside location and clamping of thin-wall workpiece 9.

Should be appreciated that; the content that above specific embodiment is announced only is part preferred version of the present utility model; every based on the technical solution of the utility model, meet technical spirit of the present utility model, belonging to those skilled in the art, to need not to carry out creative work be that available enforcement all should belong to protection domain of the present utility model.

Claims

1. swollen anchor clamps in a kind, it is characterized in that, comprise Morse's cone and jig main body, described jig main body is column structure, it in axial direction runs through and is provided with bellmouth, be provided with annular groove at outer surface, described jig main body is divided into three folder lobes in the circumferential direction of the circle at least, the Morse's cone through hole is set on the described Morse's cone, the axis of described Morse's cone through hole is perpendicular to the end face of folder lobe, be provided with adjustment screw in the described Morse's cone through hole, described adjustment screw links to each other with push rod by stage clip, and described push rod is connected to the end face of folder lobe, and described Morse's cone also is provided with the cock body that matches for described bellmouth in the end, described jig main body forms fastening structure by cock body and the extension spring that is arranged in the annular groove, links to each other with the end face of described cock body also to be provided with hold-down bolt for the stationary fixture main body.

2. interior swollen anchor clamps as claimed in claim 1, it is characterized in that, described cock body has the cock body screwed hole at end face, and described jig main body is being provided with electrolysis near hold-down bolt one side, and described hold-down bolt is fixed and compresses jig main body by described electrolysis.

3. interior swollen anchor clamps as claimed in claim 2 is characterized in that, the axial line of described bellmouth and the axial line of jig main body coincide.

4. interior swollen anchor clamps as claimed in claim 3 is characterized in that, described Morse's cone is provided with boss at the cock body bottom position, and described Morse's cone through hole is arranged on the described boss.

5. such as each described interior swollen anchor clamps of claim 1-4, it is characterized in that, the diameter of section of described extension spring is less than the height of annular groove.

6. interior swollen anchor clamps as claimed in claim 5 is characterized in that, the quantity of described annular groove is at least two.

7. such as each described interior swollen anchor clamps of claim 1-4, it is characterized in that, the quantity of described folder lobe is 3,5,7 or 9.