CN102909523B - Method for machining Y-shaped pipe - Google Patents

Abstract

Disclosed is a method for machining a Y-shaped pipe. A stainless steel pipe is used as a raw material, the method includes preparing the material; flattening end surfaces; punching a positioning hole; cutting edges; flaring shaping; trimming; edge rolling shaping; necking; shaping; punching; and welding and the like, and accordingly the Y-shaped three-way pipe is formed. The method for machining the Y-shaped pipe has the advantages that the 'Y'-shaped double-cavity exhaust pipe is formed by deep drawing and connection welding of the single pipe on the premise that extra materials are not added, exhaust of waste gas after outburst of an engine is accelerated, the circulation of the engine is smoothened, and waste gas block of cavities is reduced.

Description

The processing method of Y-piece

Technical field

The present invention relates to a kind of processing method of pipe fitting, particularly relate to a kind of processing method of Y-piece.

Background technology

Be connected to the tube connector of car tail gas outlet side, play the effect that tail gas is discharged guiding shunting, the pressure reducing waste gas in clarifier, unimpeded tube chamber air-flow and strengthened engine power.

Former tube connector is a kind of " I " type pipe adopting single cavity to give vent to anger, and easily occurs vapour lock or gives vent to anger not smooth, affect the power of engine; And owing to adopting common tubing to make, oxidizable, the life-span is short.

Summary of the invention

Object of the present invention, exactly in order to solve above-mentioned prior art Problems existing, provides a kind of processing method of Y-piece.

In order to achieve the above object, present invention employs following technical scheme: a kind of processing method of Y-piece, comprises the following steps:

A, to get the raw materials ready

Intercepting a diameter is 55 ± 0.25mm, and the stainless steel tube that length is 79 ± 0.2mm, thickness is 1.5 ± 0.15mm is as the materials in the tube of processing Y-piece;

B, planar end surface

Clamping materials in the tube, cutting tube end face chamfering, end face meets the technical requirement of C0.1, hole burr≤0.1mm;

C, rush locating hole

One end mouth of pipe of materials in the tube is gone out a half-circle locating aperture, Kong Gaowei 1.5mm, radius is 1.5mm;

D, trimming

Make the locating hole of materials in the tube down, one jiao is cut respectively in the relative both sides on materials in the tube top, making the top of materials in the tube form two cross sections is trapezoidal tube sheet and two breach, main leg is formed at bottom, the width of trapezoidal upper base is 11 ± 0.5mm, and the angle of upper base extension line and hypotenuse is 55 degree, and the height of main leg is 46.5 ± 0.5mm, and flanging is carried out to two breach, the burr≤0.25mm of flanging;

E, enlarging shaping

By mould by step D gained main leg along the enlarging shaping of breach direction, make the height of the main leg after enlarging be 39 ± 0.3mm, enlarging major diameter is 78.5 ± 0.5mm, and the thickness of pipe wall >=1.05mm of enlarging place is without cracking;

F, deburring

Two angles by step e gained two cross sections being trapezoidal tube sheet cut one jiao, burr≤0.25mm respectively;

G, volume rounding shape

The upper end by step F gained two cross sections being trapezoidal tube sheet is superimposed in opposite directions, and volume rounding shape also advises by stop-pass the arm that control obtains two φ 38.6 ± 0.35mm;

H, reducing, shaping, punching

By bottom further reducing to the 51.5 ± 0.2mm of step G gained main leg, by further for the angle of inclination of two arms shaping to becoming 35 degree with the axes intersect of main leg, angle between two arms is 70 degree, by step C gained locating hole further punching to 4 ± 0.1mm, burr≤0.25mm;

I, welding

Superimposed portion ∮=1mm stainless steel welding stick of two arms is welded to connect, welding penetration e >=0.2mm.Argon arc welding is welded as described in step I.

The processing method of Y-piece of the present invention adopts stainless steel pipe to be made into Y-piece, becomes single chamber and gives vent to anger as two-chamber is given vent to anger, accelerate the flow of waste gas; And owing to substituting common iron with stainless steel, slow down the oxidation of part, enhance the rigidity of part, extend the life-span of part.

The processing method of Y-piece of the present invention, under the prerequisite not increasing material, by deep drawn and the connecting welding of single tube, forms " Y " type double-cavity exhaust pipe.Accelerate the discharge of waste gas after engine flare, the unimpeded circulation of engine, the waste gas decreasing cavity blocks.

Accompanying drawing explanation

Fig. 1 is the materials in the tube schematic diagram of Y-piece of the present invention;

Fig. 2 is the state diagram after rushing locating hole;

Fig. 3 is the state diagram after trimming;

Fig. 4 is the state diagram after enlarging shaping;

Fig. 5 is the state diagram after deburring;

Fig. 6 is the state diagram after volume rounding shape;

Fig. 7 is the state diagram after reducing, shaping, punching;

Fig. 8 is the product figure after welding.

Detailed description of the invention

The processing method of Y-piece of the present invention, comprises the following steps:

A, to get the raw materials ready

Intercepting a diameter is 55 ± 0.25mm, the stainless steel tube that length is 79 ± 0.2mm, thickness is 1.5 ± 0.15mm as processing Y-piece materials in the tube, as shown in Figure 1;

B, planar end surface

Clamping materials in the tube, with C630 lathe grinding materials in the tube end face and chamfering, end face meets the technical requirement of C0.1, hole burr≤0.1mm;

C, rush locating hole

One end mouth of pipe of materials in the tube is gone out a half-circle locating aperture, Kong Gaowei 1.5mm, radius is R1.5mm; Punching forcing press used is J450KN, pressure 5MPa ± 0.5.Rush the materials in the tube state after locating hole as shown in Figure 2.

D, trimming

Make the locating hole of materials in the tube down, one jiao is cut respectively in the relative both sides on materials in the tube top, making the top of materials in the tube form two cross sections is trapezoidal tube sheet and two breach, main leg is formed at bottom, the width of trapezoidal upper base is 11 ± 0.5mm, and the angle of upper base extension line and hypotenuse is 55 degree, and the height of main leg is 46.5 ± 0.5mm, and flanging is carried out to two breach, the burr≤0.25mm of flanging R2; Trimming forcing press used is 3150KN, pressure 5MPa ± 0.5.Material tubulose state after trimming as shown in Figure 3.

E, enlarging shaping

By mould by step D gained main leg along the enlarging shaping of breach direction, make the height of the main leg after enlarging be 39 ± 0.3mm, enlarging major diameter is 78.5 ± 0.5mm, and the thickness of pipe wall >=1.05mm of enlarging place is without cracking; Enlarging shaping forcing press used is 1000KN, pressure 5MPa ± 0.5.Material tubulose state after enlarging shaping as shown in Figure 4.

F, deburring

Two angles by step e gained two cross sections being trapezoidal tube sheet cut one jiao, burr≤0.25mm respectively; Deburring forcing press used is J450KN, pressure 5MPa ± 0.5.Material tubulose state after deburring as shown in Figure 5.

G, volume rounding shape

The upper end by step F gained two cross sections being trapezoidal tube sheet is superimposed in opposite directions, and volume rounding shape also advises by stop-pass the arm that control obtains two φ 38.6 ± 0.35mm; Volume rounding shape forcing press used is J450KN, pressure 5MPa ± 0.5.Material tubulose state after volume rounding shape as shown in Figure 6.

H, reducing, shaping, punching

By bottom further reducing to the 51.5 ± 0.2mm of step G gained main leg, by further for the angle of inclination of two arms shaping to becoming 35 degree with the axes intersect of main leg, angle between two arms is 70 degree, by step C gained locating hole further punching to 4 ± 0.1mm, burr≤0.25mm; Reducing, shaping, punching forcing press used are J450KN, pressure 5MPa ± 0.5.Material pipe front view after reducing, shaping, punching as shown in Figure 7.

I, welding

Argon arc welding is adopted to be welded to connect superimposed portion ∮=1mm stainless steel welding stick of two arms, welding penetration e >=0.2mm.Bonding machine used is robot of Panasonic, and the Y-piece product after welding as shown in Figure 8.

Claims (2)

1. a processing method for Y-piece, is characterized in that, comprises the following steps:

A, to get the raw materials ready

Intercepting a diameter is 55 ± 0.25mm, and the stainless steel tube that length is 79 ± 0.2mm, thickness is 1.5 ± 0.15mm is as the materials in the tube of processing Y-piece;

B, planar end surface

Clamping materials in the tube, cutting tube end face chamfering, end face meets the technical requirement of C0.1, hole burr≤0.1mm;

C, rush locating hole

One end mouth of pipe of materials in the tube is gone out a half-circle locating aperture, Kong Gaowei 1.5mm, radius is 1.5mm;

D, trimming

Make the locating hole of materials in the tube down, one jiao is cut respectively in the relative both sides on materials in the tube top, making the top of materials in the tube form two cross sections is trapezoidal tube sheet and two breach, main leg is formed at bottom, the width of trapezoidal upper base is 11 ± 0.5mm, and the angle of upper base extension line and hypotenuse is 55 degree, and the height of main leg is 46.5 ± 0.5mm, and flanging is carried out to two breach, the burr≤0.25mm of flanging;

E, enlarging shaping

By mould by step D gained main leg along the enlarging shaping of breach direction, make the height of the main leg after enlarging be 39 ± 0.3mm, enlarging major diameter is 78.5 ± 0.5mm, and the thickness of pipe wall >=1.05mm of enlarging place is without cracking;

F, deburring

Two angles by step e gained two cross sections being trapezoidal tube sheet cut one jiao, burr≤0.25mm respectively;

G, volume rounding shape

The upper end by step F gained two cross sections being trapezoidal tube sheet is superimposed in opposite directions, and volume rounding shape also advises by stop-pass the arm that control obtains two φ 38.6 ± 0.35mm;

H, reducing, shaping, punching

By bottom further reducing to the 51.5 ± 0.2mm of step G gained main leg, by further for the angle of inclination of two arms shaping to becoming 35 degree with the axes intersect of main leg, angle between two arms is 70 degree, by step C gained locating hole further punching to 4 ± 0.1mm, burr≤0.25mm;

I, welding

Superimposed portion ∮=1mm stainless steel welding stick of two arms is welded to connect, welding penetration e >=0.2mm.

2. the processing method of Y-piece as claimed in claim 1, is characterized in that: be welded as argon arc welding described in step I.