CN101947634A - Forging process for flange of half shaft of automobile rear axle - Google Patents
Forging process for flange of half shaft of automobile rear axle Download PDFInfo
- Publication number
- CN101947634A CN101947634A CN 201010277355 CN201010277355A CN101947634A CN 101947634 A CN101947634 A CN 101947634A CN 201010277355 CN201010277355 CN 201010277355 CN 201010277355 A CN201010277355 A CN 201010277355A CN 101947634 A CN101947634 A CN 101947634A
- Authority
- CN
- China
- Prior art keywords
- jumping
- die cavity
- base
- rear axle
- during
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Forging (AREA)
Abstract
The invention discloses a forging process of a flange of a half shaft of an automobile rear axle, which comprises the following steps: heating a round bar to 1150-1250 ℃, upsetting the round bar by using a conical cavity of a die on a horizontal forging machine to form a middle blank of the automobile rear axle shaft, wherein the middle blank of the automobile rear axle shaft is provided with a circular truncated cone-shaped part with a thick front part and a thin rear part, the ratio of the length to the diameter of the circular truncated cone-shaped part is 0.9-1.5, the diameter is the average diameter of the circular truncated cone-shaped part, and the upsetting process time is controlled to keep the temperature of the middle blank of the automobile rear axle shaft at 1000-1100 ℃; and directly carrying out swing grinding molding on the intermediate blank of the automobile rear axle shaft on a swing grinding machine to obtain the automobile rear axle shaft flange. The forging method has the advantages of small forging equipment for blank manufacturing required by the process, less oxide skin generated by heating the forged piece, and better surface quality of the forged piece, the forged automobile rear axle half shaft has uniform deformation and high dimensional precision, and the forging production efficiency of the automobile rear axle half shaft flange is improved.
Description
Technical field
The present invention relates to automobile forging process for fuel technology, be specifically related to a kind of car rear axle semi-axis flange Forging Technology in base, pendulum stone roller moulding on pendulum stone roller machine on the horizontal forging and upsetting machine.
Technical background
Car rear axle semi-axis is the direct actuator that wheel rotates, and is the strength member that automobile transmits moment of torsion.During automobilism, the moment of torsion of engine output, pass to car rear axle semi-axis through multi-change speed, be delivered on the wheel by car rear axle semi-axis again, propelling vehicle advances or backward, therefore, car rear axle semi-axis the time have in work withstand shocks, the effect of alternating bending fatigue load and torsion, so just require car rear axle semi-axis to have enough bending strengths, shearing strength and toughness preferably.
At present, utilize pendulum stone roller machine to produce car rear axle semi-axis flange Forging Technology and mostly be the secondary ignition technique, the car rear axle semi-axis blank heats back with equipment bases such as open die forging or hydraulic presses for the first time, the base time is longer, workpiece rapid heat dissipation during base causes the blank heated temperatures first time to reduce to about 600 ℃ through heat radiation, and blank plasticity reduces, can not satisfy pendulum and grind technological requirement, therefore need carry out second time and heat adding for the first time half-shaft blank after the thermal deformation.This technology exists that forging oxide skin is big, and forging surface quality is poor, production cost height, problem such as production efficiency is low.
Summary of the invention
Order of the present invention is the problem that exists at the above-mentioned background technology, and a kind of production efficiency height is provided, and the car rear axle semi-axis flange Forging Technology that production cost is low makes it can simplify technology and equipment, improves the dimensional accuracy and the surface quality of forging.
For achieving the above object, a kind of car rear axle semi-axis flange Forging Technology that the present invention proposes, it comprises the steps:
1) circular bar is heated to 1150 ℃～1250 ℃, on horizontal forging and upsetting machine, utilize mould taper die cavity that described circular bar is carried out the jumping-up base again, form the car rear axle semi-axis intermediate blank, the thin truncated conical shape part in thick back before described car rear axle semi-axis intermediate blank has, the scope of the length-to-diameter of this truncated conical shape part is 0.9～1.5, described diameter is the average diameter of truncated conical shape part, the described jumping-up blank-making technology time is controlled, made the temperature of car rear axle semi-axis intermediate blank remain on 1000 ℃～1100 ℃;
2) above-mentioned car rear axle semi-axis intermediate blank is directly put the stone roller moulding on pendulum stone roller machine and obtain the car rear axle semi-axis flange.
In described step 1), when the circular bar that adopts during by three times of the diameter of the length≤circular bar of jumping-up part, described jumping-up preforming only need be carried out a step jumping-up base, can form described car rear axle semi-axis intermediate blank.
In described step 1), when the circular bar that adopts during by three times of the diameter of the length＞circular bar of jumping-up part, on horizontal forging and upsetting machine, utilize mould taper die cavity that described circular bar is carried out multistep jumping-up base, up to circular bar during by three times of the length≤circular bar diameter of jumping-up part, can when next step jumping-up base, form described car rear axle semi-axis intermediate blank.
In step 1), described jumping-up base adopts four step jumping-up operation bases to obtain the car rear axle semi-axis intermediate blank, the compressed coefficient≤2.8 during first step jumping-up operation base; The compressed coefficient≤2.4 of second step during jumping-up operation base; The compressed coefficient≤2.2 of the 3rd step during jumping-up operation base; The compressed coefficient≤2.0 of the 4th step during jumping-up operation base.
Described on horizontal forging and upsetting machine during first step jumping-up operation base, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity is 1.2～1.3; Described second step, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity was 1.3～1.4 during jumping-up operation base; Described the 3rd step, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity was 1.4～1.5 during jumping-up operation base; Described the 4th step, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity was 1.4～1.5 during jumping-up operation base.
During described first step jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1～1.05; Described second step is during jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1～1.1, described the 3rd step is during jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1～1.15, described the 4th step, the scope of the end diameter enhancement coefficient η of mould taper die cavity was 1.05～1.15 during jumping-up operation base.
During described first step jumping-up operation base, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ is 1.0～1.08; Described second step, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ was 1.04～1.06 during jumping-up operation base; Described the 3rd step, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ was 1.03～1.04 during jumping-up operation base; Described the 4th step, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ was 1.0～1.03 during jumping-up operation base.
The described compressed coefficient is β=(L
0-L
k)/d
0, wherein, L
0For circular bar before per step jumping-up base by the length of jumping-up part, L
kFor circular bar after per step jumping-up base by the length of jumping-up part, d
0For circular bar before per step jumping-up base by the average diameter of jumping-up part, d during first step jumping-up operation base
0Get circular bar diameter, from the second step jumping-up operation base, d
0Circular bar is by the average diameter dcp=(d of jumping-up part when getting jumping-up base last time
k+ D
k)/2, wherein, d
kBe behind the second step jumping-up operation base per step circular bar during the jumping-up base by the end diameter of jumping-up part, D
kBe behind the second step jumping-up operation base per step during the jumping-up base circular bar by the outside diameter of jumping-up part.
The outside diameter enhancement coefficient ε=D of described mould taper die cavity
k/ d
0, wherein, D
kBe the outside diameter of per step mould taper die cavity during the jumping-up base, d during first step jumping-up operation base
0Get circular bar diameter, from the second step jumping-up operation base, d
0Get the last time average diameter dcp=(d of the mould taper die cavity of jumping-up base
k+ D
k)/2, wherein, d
kEnd diameter for per step mould taper die cavity during the jumping-up base.
The end diameter enhancement coefficient η=d of described mould taper die cavity
k/ d
0, wherein, d
kBe the end diameter of per step mould taper die cavity during the jumping-up base, d
0The end diameter of the mould taper die cavity during for back jumping-up base.
The invention has the advantages that: the Forging Technology of car rear axle semi-axis flange provided by the invention changes time heating of traditional blocking blank two fire into once fire heating; Select the preformed method improvement of production equipments such as free swager, hydraulic press to be jumping-up base on horizontal forging and upsetting machine traditional jumping-up work step, it is little to make this technology have a forging equipment of required base, it is few that the forging heating produces oxide skin, forging surface quality is advantage preferably, the car rear axle semi-axis distortion that forges evenly, the dimensional accuracy height, and improved the production efficiency of the forging of car rear axle semi-axis flange, reduced the production cost of the forging of car rear axle semi-axis flange.
Description of drawings
Fig. 1 is the structural representation of circular bar;
The structural representation of first circular bar when Fig. 2 is first step jumping-up operation base;
Fig. 3 is the structural representation of second step, second circular bar during jumping-up operation base;
Fig. 4 is the structural representation of the 3rd step the 3rd circular bar during jumping-up operation base;
Fig. 5 is the structural representation of the 4th step the 4th circular bar during jumping-up operation base;
Fig. 6 is the structural representation of car rear axle semi-axis flange;
Fig. 7 is the mould structure and and the base blank assembling schematic diagram of jumping-up base on the horizontal forging and upsetting machine.
Wherein, the thin truncated conical shape part in thick back before the 1-first mould taper die cavity, the 2-second mould taper die cavity, 3-the 3rd mould taper die cavity, 4-the 4th mould taper die cavity, the 5-.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples:
Present embodiment is a kind of car rear axle semi-axis flange (as shown in Figure 6) Forging Technology, and step is as follows:
1) circular bar as shown in Figure 1 is heated to 1150 ℃～1250 ℃ in the heating in medium frequency stove, on horizontal forging and upsetting machine as shown in Figure 7, utilize mould taper die cavity that described circular bar is carried out the jumping-up base again, form the car rear axle semi-axis intermediate blank, the thin truncated conical shape part 5 in thick back before described car rear axle semi-axis intermediate blank has, the length L a of this truncated conical shape part and the scope of diameter ratio are 0.9～1.5, guaranteed that rolling in the process blank at follow-up pendulum stone roller machine is difficult for taking place oblique or crooked, described diameter is average diameter (the i.e. end diameter d of truncated conical shape part as shown in Figure 5 of truncated conical shape part
nThe outside diameter D that adds the truncated conical shape part
nThe back is divided by 2), the jumping-up blank-making technology time is controlled, make the temperature of car rear axle semi-axis intermediate blank remain on 1000 ℃～1100 ℃;
In the technique scheme, when the circular bar that adopts by the length L of jumping-up part
BDuring three times of the diameter of≤circular bar, described jumping-up preforming only need be carried out a step jumping-up base, can form described car rear axle semi-axis intermediate blank.
When the circular bar that adopts by the length L of jumping-up part
BDuring three times of the diameter of＞circular bar, on horizontal forging and upsetting machine, utilize mould taper die cavity that described circular bar is carried out multistep jumping-up base, up to circular bar during by three times of the length≤circular bar diameter of jumping-up part, can when next step jumping-up base, form described car rear axle semi-axis intermediate blank.
2) above-mentioned car rear axle semi-axis intermediate blank is directly put the stone roller moulding on pendulum stone roller machine and obtain the car rear axle semi-axis flange.The pendulum of 2MN pendulum stone roller machine grinds mould and comprises that mainly pendulum grinds die and pendulum grinds punch, and pendulum grinds the concave die cavity diameter dimension and equals semiaxis flange outer diameter size * 1.015, and cavity shape is similar to forging; Pendulum grinds the design of punch should satisfy following requirement:
Require 1: it is that a cone angle is the cone of 180-2 γ (γ is a pivot angle) that pendulum grinds punch, the size on the prod cast bus should with the consistent size of the forging of design;
Require 2: pendulum grinds the punch conical point, must grind the punch center line with pendulum and overlap with the intersection point of machine shaft center line, just can make the car rear axle semi-axis flange reach dimensional requirement.
In above-mentioned steps 1) in, the jumping-up base adopts four step jumping-up operation bases to obtain the car rear axle semi-axis intermediate blank, the compressed coefficient≤2.8 during first step jumping-up operation base; The compressed coefficient≤2.4 of second step during jumping-up operation base; The compressed coefficient≤2.2 of the 3rd step during jumping-up operation base; The compressed coefficient≤2.0 of the 4th step during jumping-up operation base; The described compressed coefficient is β=(L
0-L
k)/d
0, wherein, L
0For circular bar before per step jumping-up base by the length of jumping-up part, L
kFor circular bar after per step jumping-up base by the length of jumping-up part, d
0For circular bar before per step jumping-up base by the average diameter of jumping-up part (being the round platform part), d during first step jumping-up operation base
0Get circular bar diameter, from the second step jumping-up operation base, d
0Circular bar is by the average diameter dcp=(d of jumping-up part (round platform part) when getting jumping-up base last time
k+ D
k)/2, wherein, d
kBe behind the second step jumping-up operation base per step circular bar during the jumping-up base by the end diameter of jumping-up part (round platform part), D
kBe behind the second step jumping-up operation base per step during the jumping-up base circular bar by the outside diameter of jumping-up part (round platform part).
In the technique scheme, accurately be shaped in order to guarantee that the car rear axle semi-axis intermediate blank is final, on horizontal forging and upsetting machine in every jumping-up preforming to the outside diameter enhancement coefficient of mould taper die cavity, the end diameter enhancement coefficient of mould taper die cavity, the metal of mould taper die cavity is not fully filled the die cavity coefficient, is controlled in the following scope:
For the outside diameter enhancement coefficient ε of mould taper die cavity, during first step jumping-up operation base, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity is 1.2～1.3 on horizontal forging and upsetting machine; Described second step, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity was 1.3～1.4 during jumping-up operation base; Described the 3rd step, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity was 1.4～1.5 during jumping-up operation base; Described the 4th step, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity was 1.4～1.5 during jumping-up operation base; The outside diameter enhancement coefficient ε=D of mould taper die cavity
k/ d
0, wherein, D
kBe the outside diameter of per step mould taper die cavity during the jumping-up base, d during first step jumping-up operation base
0Get circular bar diameter, from the second step jumping-up operation base, d
0Get the last time average diameter dcp=(d of the mould taper die cavity of jumping-up base
k+ D
k)/2, wherein, d
kEnd diameter for per step mould taper die cavity during the jumping-up base.
For the end diameter enhancement coefficient η of mould taper die cavity, during first step jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1～1.05; Described second step is during jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1～1.1, described the 3rd step is during jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1～1.15, described the 4th step is during jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1.05～1.15, the end diameter enhancement coefficient η=d of mould taper die cavity
k/ d
0, wherein, d
kBe the end diameter of per step mould taper die cavity during the jumping-up base, d
0The end diameter of the mould taper die cavity during for back jumping-up base.
Metal for mould taper die cavity is not fully filled die cavity coefficient μ, and during first step jumping-up operation base, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ is 1.0～1.08; Described second step, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ was 1.04～1.06 during jumping-up operation base; Described the 3rd step, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ was 1.03～1.04 during jumping-up operation base; Described the 4th step, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ was 1.0～1.03 during jumping-up operation base.The purpose that the metal of consideration taper die cavity is not fully filled die cavity coefficient μ is to produce burr for fear of circular bar when being upset as cone, so will make the volume of mould taper die cavity more bigger than the volume of base blank.
The length L of the taper die cavity in above-mentioned per step jumping-up base is by formula L=μ V (1+ δ)/0.262 (D
k 2+ d
k 2+ D
kd
k) calculate, wherein, D
kOutside diameter for mould taper die cavity; d
kEnd diameter for mould taper die cavity; Burn out rate when δ is blank heating gets 1%～1.5% during eddy-current heating; V is circular bar crushed element volume.
In the technique scheme, circular bar is by the length L of jumping-up base part in the first step jumping-up operation base
BBy formula
Calculate,
Wherein, d
0Be the diameter of circular bar, burn out rate when δ is the heating of circular bar gets 1%～1.5% during eddy-current heating; V
ABe car rear axle semi-axis flange forging volume.
Illustrate four specific design modes of gathering the base work step on the horizontal forging and upsetting machine below:
According to car rear axle semi-axis flange forging volume V
A=904563mm
3, car rear axle semi-axis bar portion diameter is 50mm, and the specification of selecting circular bar for use is all 50mm mutually with half shafts portion diameter, and circular bar is by the length L of jumping-up base part
BFor:
D in the formula
0Be the diameter of circular bar, burn out rate when δ is the heating of circular bar, eddy-current heating gets 1%～1.5%; Through calculating circular bar by the length L of jumping-up base part
B=904563 (1+1.5%)/3.14252=467.8mm;
First step jumping-up operation base: the metal of outside diameter enhancement coefficient ε=1.3, the first mould taper die cavities 1 of getting end diameter enhancement coefficient η=1.05, the first mould taper die cavities 1 of the first mould taper die cavity 1 is not fully filled die cavity coefficient μ=1.08, then:
The first mould taper die cavity, 1 end diameter d
1=η d
0=1.05 * 50mm=52.5mm;
The first mould taper die cavity, 1 outside diameter D
1=ε d
0=1.3 * 50mm=65mm;
The first mould taper die cavity, 1 length L=μ V (1+ δ)/0.262 (D
1 2+ d
1 2+ D
1d
1) in the formula, V is circular bar crushed element volume.Burn out rate when δ is blank heating, eddy-current heating gets 1%～1.5%; L=358.7mm.
The compressed coefficient of the first circular bar=(L
B-L)/d
0=(467.6-358.7)/and 50=2.2, the compressed coefficient≤2.8 of the first circular bar when satisfying first step jumping-up operation base.Therefore, jumping-up base work step is reasonable in design for the first time.
Jumping-up base for the second time: the metal of outside diameter enhancement coefficient ε=1.3, the second mould taper die cavities 2 of getting end diameter enhancement coefficient η=1, the second mould taper die cavity 2 of the second mould taper die cavity 2 is not fully filled die cavity coefficient μ=1.06, then:
The average diameter d of the first circular bar truncated conical shape part behind the jumping-up base
1p=(d
1+ D
1)/2=(65+52.5)/2=58.75
The second mould taper die cavity, 2 end diameter d
2=d
1p* 1=58.75 * 1=58.75mm;
The second mould taper die cavity, 2 outside diameter D
2=ε d
1p=1.3 * 58.75mm=76.3mm;
The second mould taper die cavity, 2 length L
2=μ V (1+ δ)/0.262 (D
2 2+ d
2 2+ D
2d
2)
L
2＝1.06x904563×(1+0.015)/0.262×(76.3
2+58.75
2+76.3x58.75)
L
2＝270mm
The compressed coefficient of the second circular bar=(L-L
2)/d
1p=(358.7-270)/58.75=1.5, satisfy the compressed coefficient≤2.4 of second step, second circular bar during jumping-up operation base.Therefore, jumping-up base work step is reasonable in design for the second time.
Jumping-up base for the third time: the metal of outside diameter enhancement coefficient ε=1.4, the three mould taper die cavities 3 of getting end diameter enhancement coefficient η=1.0, the three mould taper die cavities 3 of the 3rd mould taper die cavity 3 is not fully filled die cavity coefficient μ=1.04, then:
The average diameter d of the second circular bar truncated conical shape part behind the jumping-up base
2p=(d
2+ D
2)/2=(58.75+76.3)/2=67.525
The 3rd mould taper die cavity 3 end diameter d
3=67.525 * 1.0=67.525mm gets d
3=67.5mm
The 3rd mould taper die cavity 3 outside diameter D
3=ε d
2p=1.4 * 67.525mm=94.535mm gets D
3=94.5mm
The 3rd mould taper die cavity 3 length L
3=μ V (1+ δ)/0.262 (D
3 2+ d
3 2+ D
3d
3)
L
3＝1.04×904563×(1+1.015)/0.262×(94.5
2+67.5
2+94.5×67.5)
L
3＝183.4mm
The compressed coefficient of the 3rd circular bar 3=(L
2-L
3)/d
2p=(270-183.4)/67.525=1.28, satisfy the compressed coefficient＜2.2 of the 3rd step the 3rd circular bar 3 during jumping-up operation base.Therefore, jumping-up base work step is reasonable in design for the third time.
The 4th jumping-up base: the average diameter d of the 3rd circular bar truncated conical shape part behind the jumping-up base
3p=(d
3+ D
3)/2=(67.5+94.5)/2=81mm; The upset ratio ψ of the 3rd circular bar
3=L '/d
3pIn the formula, L ' is the 3rd mould taper die cavity 3 length L
3=183.4mm, then: ψ
3=L '/d
3p=183.4/81=2.26＜3, when circular bar can carry out the jumping-up base in the 4th step after through three jumping-up bases, the compressed coefficient≤2.0 during control jumping-up base, form the car rear axle semi-axis intermediate blank, the temperature of this car rear axle semi-axis intermediate blank is 1000 ℃～1100 ℃, at last temperature is directly put the stone roller moulding at blank in the middle of 1000 ℃～1100 ℃ the car rear axle semi-axis on pendulum stone roller machine and obtains the car rear axle semi-axis flange.
The content that is not described in detail belongs to this area professional and technical personnel's known prior art.
Claims (10)
1. car rear axle semi-axis flange Forging Technology, it is characterized in that: it comprises the steps:
1) circular bar is heated to 1150 ℃～1250 ℃, on horizontal forging and upsetting machine, utilize mould taper die cavity that described circular bar is carried out the jumping-up base again, form the car rear axle semi-axis intermediate blank, the thin truncated conical shape part in thick back before described car rear axle semi-axis intermediate blank has, the scope of the length-to-diameter of this truncated conical shape part is 0.9～1.5, described diameter is the average diameter of truncated conical shape part, the described jumping-up blank-making technology time is controlled, made the temperature of car rear axle semi-axis intermediate blank remain on 1000 ℃～1100 ℃;
2) above-mentioned car rear axle semi-axis intermediate blank is directly put the stone roller moulding on pendulum stone roller machine and obtain the car rear axle semi-axis flange.
2. car rear axle semi-axis flange Forging Technology according to claim 1, it is characterized in that: in described step 1), when the circular bar that adopts during by three times of the diameter of the length≤circular bar of jumping-up part, described jumping-up preforming only need be carried out a step jumping-up base, can form described car rear axle semi-axis intermediate blank.
3. car rear axle semi-axis flange Forging Technology according to claim 1, it is characterized in that: in described step 1), when the circular bar that adopts during by three times of the diameter of the length＞circular bar of jumping-up part, on horizontal forging and upsetting machine, utilize mould taper die cavity that described circular bar is carried out multistep jumping-up base, up to circular bar during by three times of the length≤circular bar diameter of jumping-up part, can when next step jumping-up base, form described car rear axle semi-axis intermediate blank.
4. car rear axle semi-axis flange Forging Technology according to claim 3, it is characterized in that: in step 1), described jumping-up base adopts four step jumping-up operation bases to obtain the car rear axle semi-axis intermediate blank, the compressed coefficient≤2.8 during first step jumping-up operation base; The compressed coefficient≤2.4 of second step during jumping-up operation base; The compressed coefficient≤2.2 of the 3rd step during jumping-up operation base; The compressed coefficient≤2.0 of the 4th step during jumping-up operation base.
5. car rear axle semi-axis flange Forging Technology according to claim 4 is characterized in that: described on horizontal forging and upsetting machine during first step jumping-up operation base, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity is 1.2～1.3; Described second step, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity was 1.3～1.4 during jumping-up operation base; Described the 3rd step, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity was 1.4～1.5 during jumping-up operation base; Described the 4th step, the scope of the outside diameter enhancement coefficient ε of mould taper die cavity was 1.4～1.5 during jumping-up operation base.
6. car rear axle semi-axis flange Forging Technology according to claim 4 is characterized in that: during described first step jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1～1.05; Described second step is during jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1～1.1, described the 3rd step is during jumping-up operation base, the scope of the end diameter enhancement coefficient η of mould taper die cavity is 1～1.15, described the 4th step, the scope of the end diameter enhancement coefficient η of mould taper die cavity was 1.05～1.15 during jumping-up operation base.
7. car rear axle semi-axis flange Forging Technology according to claim 4 is characterized in that: during described first step jumping-up operation base, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ is 1.0～1.08; Described second step, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ was 1.04～1.06 during jumping-up operation base; Described the 3rd step, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ was 1.03～1.04 during jumping-up operation base; Described the 4th step, the scope that the metal of mould taper die cavity is not fully filled die cavity coefficient μ was 1.0～1.03 during jumping-up operation base.
8. car rear axle semi-axis flange Forging Technology according to claim 4 is characterized in that: the described compressed coefficient is β=(L
0-L
k)/d
0, wherein, L
0For circular bar before per step jumping-up base by the length of jumping-up part, L
kFor circular bar after per step jumping-up base by the length of jumping-up part, d
0For circular bar before per step jumping-up base by the average diameter of jumping-up part, d during first step jumping-up operation base
0Get circular bar diameter, from the second step jumping-up operation base, d
0Circular bar is by the average diameter dcp=(d of jumping-up part when getting jumping-up base last time
k+ D
k)/2, wherein, d
kBe behind the second step jumping-up operation base per step circular bar during the jumping-up base by the end diameter of jumping-up part, D
kBe behind the second step jumping-up operation base per step during the jumping-up base circular bar by the outside diameter of jumping-up part.
9. car rear axle semi-axis flange Forging Technology according to claim 5 is characterized in that: the outside diameter enhancement coefficient ε=D of described mould taper die cavity
k/ d
0, wherein, D
kBe the outside diameter of per step mould taper die cavity during the jumping-up base, d during first step jumping-up operation base
0Get circular bar diameter, from the second step jumping-up operation base, d
0Get the last time average diameter dcp=(d of the mould taper die cavity of jumping-up base
k+ D
k)/2, wherein, d
kEnd diameter for per step mould taper die cavity during the jumping-up base.
10. car rear axle semi-axis flange Forging Technology according to claim 6 is characterized in that: the end diameter enhancement coefficient η=d of described mould taper die cavity
k/ d
0, wherein, d
kBe the end diameter of per step mould taper die cavity during the jumping-up base, d
0The end diameter of the mould taper die cavity during for back jumping-up base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102773557A CN101947634B (en) | 2010-09-03 | 2010-09-03 | Forging process for flange of half shaft of automobile rear axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102773557A CN101947634B (en) | 2010-09-03 | 2010-09-03 | Forging process for flange of half shaft of automobile rear axle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101947634A true CN101947634A (en) | 2011-01-19 |
| CN101947634B CN101947634B (en) | 2012-09-26 |
Family
ID=43451332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102773557A Active CN101947634B (en) | 2010-09-03 | 2010-09-03 | Forging process for flange of half shaft of automobile rear axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101947634B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554093A (en) * | 2011-12-14 | 2012-07-11 | 青特集团有限公司 | Pre-upset one-heating forming mold and pre-upset process |
| CN103537595A (en) * | 2013-10-23 | 2014-01-29 | 许昌中兴锻造有限公司 | Novel technology for forging spline shaft of transmission shaft |
| CN104084514A (en) * | 2014-07-10 | 2014-10-08 | 吉林圆方机械集团有限公司 | Half axle forging forming technology |
| CN104826970A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Flange disc forging and molding process |
| CN105081186A (en) * | 2015-07-23 | 2015-11-25 | 山东亨格尔制造股份有限公司 | Combined forging and forming process for input shaft of automotive automatic transmission |
| CN106623718A (en) * | 2016-12-08 | 2017-05-10 | 山东大学 | Continuous tapered upsetting die and upsetting method for bar material with superhigh height-diameter ratio |
| CN110328323A (en) * | 2019-08-15 | 2019-10-15 | 吉林大学 | A kind of car rear axle semi-axis forging and forming technology |
| CN110508743A (en) * | 2019-09-02 | 2019-11-29 | 许昌中兴锻造有限公司 | Stock flange shaft forging technology |
| CN110788263A (en) * | 2019-10-22 | 2020-02-14 | 江苏龙城精锻有限公司 | Manufacturing process of stainless steel oil rail forging |
| CN110814248A (en) * | 2019-10-10 | 2020-02-21 | 中国第一汽车股份有限公司 | Flash-free hot die forging forming process for front shell forging of automobile differential |
| CN110961560A (en) * | 2019-12-06 | 2020-04-07 | 陕西宏远航空锻造有限责任公司 | Forging method for one-time upsetting forming of large-height-diameter-ratio bar |
| CN112828220A (en) * | 2021-01-06 | 2021-05-25 | 重庆齐信汽车零部件有限公司 | Half shaft forging process based on variable temperature type intermediate frequency heating furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203484U (en) * | 1987-07-22 | 1988-08-17 | 沈阳汽车制造厂 | Half-shaft sleeve of light-automobile rear axle and its lateral rolling machine |
| CN2285704Y (en) * | 1996-04-10 | 1998-07-08 | 凤城市通达汽车配件厂 | Hot forging die for flange of half rear axle for automobile |
| CN1206662A (en) * | 1997-07-28 | 1999-02-03 | 吉林工业大学 | Method for forming axle shaft sleeve of rear-axle of agricultural car |
| JP2001018032A (en) * | 1999-07-05 | 2001-01-23 | Daido Steel Co Ltd | Manufacture of flanged shaft, and manufacturing device used therefor |
| JP2004276043A (en) * | 2003-03-13 | 2004-10-07 | Daido Steel Co Ltd | Multistage forging apparatus |
-
2010
- 2010-09-03 CN CN2010102773557A patent/CN101947634B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203484U (en) * | 1987-07-22 | 1988-08-17 | 沈阳汽车制造厂 | Half-shaft sleeve of light-automobile rear axle and its lateral rolling machine |
| CN2285704Y (en) * | 1996-04-10 | 1998-07-08 | 凤城市通达汽车配件厂 | Hot forging die for flange of half rear axle for automobile |
| CN1206662A (en) * | 1997-07-28 | 1999-02-03 | 吉林工业大学 | Method for forming axle shaft sleeve of rear-axle of agricultural car |
| JP2001018032A (en) * | 1999-07-05 | 2001-01-23 | Daido Steel Co Ltd | Manufacture of flanged shaft, and manufacturing device used therefor |
| JP2004276043A (en) * | 2003-03-13 | 2004-10-07 | Daido Steel Co Ltd | Multistage forging apparatus |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554093A (en) * | 2011-12-14 | 2012-07-11 | 青特集团有限公司 | Pre-upset one-heating forming mold and pre-upset process |
| CN103537595A (en) * | 2013-10-23 | 2014-01-29 | 许昌中兴锻造有限公司 | Novel technology for forging spline shaft of transmission shaft |
| CN103537595B (en) * | 2013-10-23 | 2015-12-09 | 许昌中兴锻造有限公司 | Splined driveshaft axle Forging Technology |
| CN104084514A (en) * | 2014-07-10 | 2014-10-08 | 吉林圆方机械集团有限公司 | Half axle forging forming technology |
| CN104084514B (en) * | 2014-07-10 | 2016-01-20 | 吉林圆方机械集团有限公司 | A kind of semiaxis forging molding process |
| CN104826970A (en) * | 2015-05-13 | 2015-08-12 | 吴光英 | Flange disc forging and molding process |
| CN105081186A (en) * | 2015-07-23 | 2015-11-25 | 山东亨格尔制造股份有限公司 | Combined forging and forming process for input shaft of automotive automatic transmission |
| CN106623718B (en) * | 2016-12-08 | 2018-05-11 | 山东大学 | The continuous cone upsetting die and method for upsetting of a kind of super large ratio of height to diameter bar |
| CN106623718A (en) * | 2016-12-08 | 2017-05-10 | 山东大学 | Continuous tapered upsetting die and upsetting method for bar material with superhigh height-diameter ratio |
| CN110328323A (en) * | 2019-08-15 | 2019-10-15 | 吉林大学 | A kind of car rear axle semi-axis forging and forming technology |
| CN110508743A (en) * | 2019-09-02 | 2019-11-29 | 许昌中兴锻造有限公司 | Stock flange shaft forging technology |
| CN110814248A (en) * | 2019-10-10 | 2020-02-21 | 中国第一汽车股份有限公司 | Flash-free hot die forging forming process for front shell forging of automobile differential |
| CN110814248B (en) * | 2019-10-10 | 2022-03-22 | 中国第一汽车股份有限公司 | Flash-free hot die forging forming process for front shell forging of automobile differential |
| CN110788263A (en) * | 2019-10-22 | 2020-02-14 | 江苏龙城精锻有限公司 | Manufacturing process of stainless steel oil rail forging |
| CN110961560A (en) * | 2019-12-06 | 2020-04-07 | 陕西宏远航空锻造有限责任公司 | Forging method for one-time upsetting forming of large-height-diameter-ratio bar |
| CN112828220A (en) * | 2021-01-06 | 2021-05-25 | 重庆齐信汽车零部件有限公司 | Half shaft forging process based on variable temperature type intermediate frequency heating furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101947634B (en) | 2012-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101947634B (en) | Forging process for flange of half shaft of automobile rear axle | |
| CN102189373B (en) | Integral forging near net shaping process for triple gear block, and prepared gear shaft | |
| CN100371129C (en) | Tech. for forging forming of hook fastener flame of wagon and maould thereof | |
| CN104907471A (en) | Supporting wheel closed forging process and forging die | |
| CN102672096A (en) | Precision die forging and shaping technical method for automobile steering knuckle rough type parts | |
| CN102500740A (en) | Manufacturing process for lambdoidal control arm | |
| CN102581574A (en) | Method for machining inner gear rings | |
| CN103464991A (en) | Gear ring machining process | |
| CN103990946A (en) | Manufacturing method for H-shaped aluminum alloy hub | |
| CN102989986A (en) | Forging technology of large TC4 alloy drum forged piece | |
| CN102989942A (en) | Forging method of single-throw crank shaft | |
| CN105710620A (en) | Manufacturing process for conjunction-tooth gear of car transmission | |
| CN103668027A (en) | Quasi beta forging process for TC25 titanium alloy | |
| CN203265502U (en) | Hot forging device for transmission shaft joint fork with horizontal fork part | |
| CN103111815B (en) | Secondary synchronous cold extruding forming production method for cross axles of automobile differentials and planetary reducers | |
| WO2015188543A1 (en) | Method for manufacturing high-magnesium aluminum alloy commercial wheel hub | |
| CN106112417A (en) | Exempt to weld major axis inner constant velocity universal joint precision forging Forging Technology | |
| CN101913066A (en) | Method for manufacturing driven transmission gear of automobile automatic gearbox | |
| CN104959778A (en) | Constant speed universal joint end face transmission gear precision forging moulding technology | |
| CN104723037B (en) | Automotive transmission input shaft combined forming process and forge die | |
| CN102198455B (en) | Hot extrusion forming method of drive shaft blank and die used in same | |
| CN106002096A (en) | One-time fire forging method for M50 steel bearing ring forge piece | |
| CN105970130B (en) | A kind of method that alternately backward extrusion prepares fine grain magnesium alloy | |
| CN112676506A (en) | Universal joint cross shaft closed forging and forging residual heat normalizing processing technology | |
| CN103464674A (en) | Hot forging forming method for duplex fork forged piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG COMMERCIAL VEHICLE CO., LTD. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20131016 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430056 WUHAN, HUBEI PROVINCE TO: 442001 SHIYAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131016 Address after: 442001 Shiyan City, Hubei province city Zhangwan District Road No. 2 Patentee after: Dongfeng Commercial Vehicle Co.,Ltd. Address before: 430056 Dongfeng Road, Wuhan Economic & Technological Development Zone, Hubei, Wuhan, China, No. 10 Patentee before: DONGFENG MOTER Co.,Ltd. |