CN102909523A - 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, relate in particular 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 that reduces waste gas in the clarifier, unimpeded tube chamber air-flow and strengthened engine power.

Former tube connector is a kind of " I " type pipe that adopts single cavity to give vent to anger, and is prone to vapour lock or gives vent to anger not freely, affects the power of engine; And owing to adopt common tubing to make, easily oxidation, the life-span is short.

Summary of the invention

Purpose of the present invention in order to solve the problem of above-mentioned prior art existence, provides a kind of processing method of Y-piece exactly.

In order to achieve the above object, the present invention has adopted following technical scheme: a kind of processing method of Y-piece may further comprise the steps:

A, get the raw materials ready

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

B, planar end surface

Clamp materials in the tube, cutting tube end face and chamfering, end face satisfies the specification requirement of C0.1, hole burr≤0.1mm;

C, rush locating hole

End mouth of pipe in materials in the tube is gone out a semicircle locating hole, and Kong Gaowei 1.5mm, radius are 1.5mm;

D, side cut

Make the locating hole of materials in the tube down, cut respectively one jiao in the relative both sides on materials in the tube top, make two cross sections of formation, top of materials in the tube be trapezoidal tube sheet and two breach, the main leg is formed at the 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 main leg's height is 46.5 ± 0.5mm, and two breach are carried out flanging, flanging and burr≤0.25mm;

E, enlarging shaping

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

F, deburring

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

G, volume rounding shape

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

H, reducing, shaping, punching

With step G gained main leg's the further reducing to 51.5 in bottom ± 0.2mm, the further shaping in the angle of inclination of two arms is extremely become 35 degree with main leg's axes intersect, angle between two arms is 70 degree, with the further punching to 4 of step C gained locating hole ± 0.1mm, burr≤0.25;

I, welding

Superimposed of two arms is welded to connect welding penetration e 〉=0.2mm with ∮=1mm stainless steel welding stick.Step I is described to be welded as argon arc welding.

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 and give vent to anger into two-chamber, has accelerated the flow of waste gas; And owing to substitute common iron with stainless steel, the oxidation that has slowed down part has strengthened the rigidity of part, has prolonged the life-span of part.

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

Description of drawings

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

Fig. 2 is the state diagram of rushing behind the locating hole;

Fig. 3 is the state diagram after cutting edge;

Fig. 4 is the state diagram after the enlarging shaping;

Fig. 5 is the state diagram after the deburring;

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

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

Fig. 8 is the product figure after the welding.

The specific embodiment

The processing method of Y-piece of the present invention may further comprise the steps:

A, get the raw materials ready

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

B, planar end surface

Clamp materials in the tube, with C 630 lathe grinding materials in the tube end face and chamferings, end face satisfies the specification requirement of C0.1, hole burr≤0.1mm;

C, rush locating hole

End mouth of pipe in materials in the tube is gone out a semicircle locating hole, and Kong Gaowei 1.5mm, radius are R1.5mm; The used forcing press of punching is J 450KN, pressure 5MPa ± 0.5.Rush behind the locating hole the materials in the tube state as shown in Figure 2.

D, side cut

Make the locating hole of materials in the tube down, cut respectively one jiao in the relative both sides on materials in the tube top, make two cross sections of formation, top of materials in the tube be trapezoidal tube sheet and two breach, the main leg is formed at the 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 main leg's height is 46.5 ± 0.5mm, and two breach are carried out flanging, flanging R2 and burr≤0.25mm; The used forcing press of cutting edge is 3150KN, pressure 5MPa ± 0.5.Material tubulose attitude after the side cut as shown in Figure 3.

E, enlarging shaping

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

F, deburring

Two angles that two cross sections of step e gained are trapezoidal tube sheet cut respectively one jiao, burr≤0.25mm; The used forcing press of deburring is J 450KN, pressure 5MPa ± 0.5.Material tubulose attitude after the deburring as shown in Figure 5.

G, volume rounding shape

The upper end that two cross sections of step F gained is trapezoidal tube sheet is superimposed in opposite directions, and volume rounding shape also obtains the arm of two φ 38.6 ± 0.35mm with the control of stop-pass rule; The used forcing press of volume rounding shape is J 450KN, pressure 5MPa ± 0.5.Material tubulose attitude after the volume rounding shape as shown in Figure 6.

H, reducing, shaping, punching

With step G gained main leg's the further reducing to 51.5 in bottom ± 0.2mm, the further shaping in the angle of inclination of two arms is extremely become 35 degree with main leg's axes intersect, angle between two arms is 70 degree, with the further punching to 4 of step C gained locating hole ± 0.1mm, burr≤0.25; Reducing, shaping, the used forcing press of punching are J 450KN, pressure 5MPa ± 0.5.Material pipe front view after reducing, shaping, the punching as shown in Figure 7.

I, welding

Adopt argon arc welding to be welded to connect welding penetration e 〉=0.2mm with superimposed of two arms with ∮=1mm stainless steel welding stick.Used bonding machine is the robot of Panasonic, and the Y-piece product after the welding as shown in Figure 8.

Claims (2)

1. the processing method of a Y-piece is characterized in that, may further comprise the steps:

A, get the raw materials ready

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

B, planar end surface

Clamp materials in the tube, cutting tube end face and chamfering, end face satisfies the specification requirement of C0.1, hole burr≤0.1mm;

C, rush locating hole

End mouth of pipe in materials in the tube is gone out a semicircle locating hole, and Kong Gaowei 1.5mm, radius are 1.5mm;

D, side cut

Make the locating hole of materials in the tube down, cut respectively one jiao in the relative both sides on materials in the tube top, make two cross sections of formation, top of materials in the tube be trapezoidal tube sheet and two breach, the main leg is formed at the 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 main leg's height is 46.5 ± 0.5mm, and two breach are carried out flanging, flanging and burr≤0.25mm;

E, enlarging shaping

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

F, deburring

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

G, volume rounding shape

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

H, reducing, shaping, punching

With step G gained main leg's the further reducing to 51.5 in bottom ± 0.2mm, the further shaping in the angle of inclination of two arms is extremely become 35 degree with main leg's axes intersect, angle between two arms is 70 degree, with the further punching to 4 of step C gained locating hole ± 0.1mm, burr≤0.25;

I, welding

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

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

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