CN201105298Y

CN201105298Y - U-shaped pipe bending tool

Info

Publication number: CN201105298Y
Application number: CNU2007201735759U
Authority: CN
Inventors: 尤国平; 冯永仁
Original assignee: China Oilfield Services Ltd; China National Offshore Oil Corp CNOOC
Current assignee: China Oilfield Services Ltd; China National Offshore Oil Corp CNOOC
Priority date: 2007-10-10
Filing date: 2007-10-10
Publication date: 2008-08-27
Anticipated expiration: 2017-10-10

Abstract

The utility model discloses a U-shaped bending tool, comprising a syphon mother matrix, a rolling extrusion head and a connecting sheet, which is characterized in that the rolling extrusion head can be rotated and positioned on the siphon mother matrix by one end of the connecting sheet; the rolling extrusion head can be rotated and fixed on the other end of the connecting sheet; the shape forming slot matching with the rolling extrusion head is positioned on the syphon mother matrix. The U-shaped bending tool has the advantages that the thin wall slim tube can be folded and bended into U-shaped tube accurately by the tool, and the convenience and high efficiency are guaranteed.

Description

U type pipe bending tool

Technical field

The utility model relates to a kind of bending tool that is used for thin wall tubule is bent into U type pipe.

Background technology

Present bending tool is of a great variety, but much all has the problem that bending precision is not high and the bending scope is limited to.Line contact slip squeezing action between two trough of belt cylinders of the general main dependence of existing pipe crimping tool plays the bending effect, as shown in Figure 1.Mainly there are the following problems for it: one, easily light-wall pipe is flattened two, can't accurately control the shape of bending and the collimation of straight tube.Particularly, lack the high instrument of a kind of simple and effective and bending precision for thin wall tubule being bent into U type pipe.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of U type pipe bending tool, can accurately thin wall tubule be bent into U type pipe.

A kind of U type pipe bending tool of the present utility model comprises: the female carcass of bend pipe, milled head and brace; Milled head is arranged on the female carcass of bend pipe by an end of brace is rotatable, and described milled head can be installed in rotation on the other end of brace, also offers the grooving that matches with described milled head on the female carcass of bend pipe.

Preferably, described grooving is one section radian greater than 180 ° arc groove.

Preferably, described milled head can regulate and the female carcass of described bend pipe between spacing be arranged on the described brace.

Preferably, also turn on the female carcass of described bend pipe afterburning handle is installed, described milled head is by this reinforcing handle application of force.

Preferably, described milled head week upwards offers the cannelure that matches with described grooving.

Preferably, also be provided with pilot hole on the female carcass of described bend pipe, an end of this pilot hole and described grooving joins.

The utlity model has following effect:

1, the female carcass of profiling has pilot hole, therefore can force to make pipe along female carcass profiling by bending, because the design of pipe springback compensation is arranged, therefore can guarantee that the U type pipe straight-tube portion of bending is parallel again, and then assurance centre-to-centre spacing;

2, needle bearing is equipped with in inside, and the slip in the bend pipe process is become rolling, more saves labour, and can reduce the possibility that light-wall pipe is crushed;

3, two afterburning handles are fixed in the rotating shaft of female carcass, promote milled head and roll along female carcass grooving, can apply bigger moment;

4, than existing pipe bending technique, the utility model can bend the U-shaped shape more accurately, and the centre-to-centre spacing of two parallel straight tubes also can be guaranteed.

Description of drawings

Fig. 1 is the prior art structural representation;

Fig. 2 is the utility model structural representation stereogram;

Fig. 3 looks schematic diagram for the utility model master;

Fig. 4 is an A-A generalized section among Fig. 3;

Fig. 5 is the schematic perspective view of the female carcass of bend pipe;

Fig. 6 is the main pseudosection of the female carcass of bend pipe.

The specific embodiment

Shown in Fig. 2～6, the utility model comprises: the female carcass 2 of bend pipe, milled head 3, needle bearing 4, female carcass rotor 5, roll extrusion handle 6, bearing (ball) cover 7, brace 8, nut 9 and afterburning handle 13.Milled head 3 is installed in rotation on the female carcass 2 of bend pipe by an end of brace 8, and milled head 3 self also is arranged on the other end of this brace 8 rotationally, and can regulate spacing between milled head 3 and the female carcass 2 of bend pipe by brace 8; The female carcass 2 of bend pipe is provided with the grooving 14 that matches with milled head 3, and this grooving 14 has the springback compensation design, and promptly grooving 14 be a radian greater than 180 ° arc groove, therefore can guarantee that the U type pipe straight-tube portion of bending is parallel, and then assurance centre-to-centre spacing; Afterburning handle 13 rotatable being installed on the female carcass 2 of bend pipe, milled head 3 is by these reinforcing handle 13 application of forces, like this, in the time of in tubule 1 places this grooving 14, can promote the milled heads 3 female carcass 2 of pipe of going for a stroll by afterburning handle 13 and in certain circumference angular range, rotate.

The set-up mode that above-mentioned position annexation is further concrete is as follows: needle bearing 4 is housed in the milled head 3, and bearing 4 outer rings are fixing by bearing (ball) cover 7, bearing 4 inner ring embedded roll extrusion handles 6.Roll extrusion handle 6 is fixed on the afterburning handle 13, milled head 3 is installed in rotation on the roll extrusion handle 6 by needle bearing 4, roll extrusion handle 6 is installed on the brace 8 by nut 9, and what brace 8 connected roll extrusion handle 6 is slotted hole, therefore can regulate the centre-to-centre spacing between female carcass 2 of bend pipe and the milled head 3.Like this, milled head 3 just can be along roll extrusion handle 6 axial rotation.Offer installing hole 16 on the female carcass 2 of bend pipe, female carcass rotor 5 is encased in this installing hole 16, and is rigidly connected by 2 braces 8 and milled head 3.Afterburning handle 13 is installed on female carcass rotor 5, thereby forms rotatable the cooperation with the female carcass 2 of bend pipe, and its bending part just in time can push up the nut 9 on the roll extrusion handle 6, so just can be by 6 pairs of milled head 3 application of forces of roll extrusion handle.

Shown in Fig. 5,6,3 weeks of milled head upwards offer the cannelure 17 that matches with grooving 14, cooperate the extruding tubule 1 that can roll well with grooving 14.Also be provided with pilot hole 15 on the female carcass 2 of bend pipe, this pilot hole 15 joins with an end of grooving 14.Be provided with pilot hole 15 can force to make tubule 1 along the grooving 14 of the female carcass 2 of bend pipe by bending.

The concrete working method of the utility model: the female carcass of bend pipe 2 bottoms are fixed on the bench vice.Milled head 3 places female carcass 2 one sides of bend pipe, with treating that bending tubule 1 inserts in the pilot hole 15 of the female carcass 2 of bend pipe, regulates brace 8 and milled head 3 axial locations, guarantees accurately to compress in advance tubule 1.After adjusting end, nut 9 is tightened, forced in afterburning handle 13, afterburning handle 13 rotates with female carcass rotor 5, top top nut 9 back drives milled heads 3 along female carcass 2 profilings of the bend pipe extruding tubule 1 that rolls, and rolls across the pipe springback compensation place on the grooving 14 of the female carcass 2 of bend pipe always.The bending of U type pipe is finished like this.

Claims

1, a kind of U type bending tool is characterized in that, comprising: the female carcass of bend pipe, milled head and brace; Milled head is arranged on the female carcass of bend pipe by an end of brace is rotatable, and described milled head can be installed in rotation on the other end of brace, also offers the grooving that matches with described milled head on the female carcass of bend pipe.

2, bending tool as claimed in claim 1 is characterized in that, described grooving is one section radian greater than 180 ° arc groove.

3, bending tool as claimed in claim 1 or 2 is characterized in that, described milled head can regulate and the female carcass of described bend pipe between spacing be arranged on the described brace.

4, bending tool as claimed in claim 3 is characterized in that, also turns on the female carcass of described bend pipe afterburning handle is installed, and described milled head is by this reinforcing handle application of force.

5, bending tool as claimed in claim 4 is characterized in that, described milled head week upwards offers the cannelure that matches with described grooving.

6, bending tool as claimed in claim 5 is characterized in that, also is provided with pilot hole on the female carcass of described bend pipe, and an end of this pilot hole and described grooving joins.