CN205056769U - Oil pan internal expanding moulding -die utensil - Google Patents

Abstract

The utility model discloses an oil pan internal expanding moulding -die utensil, comprises an upper die and a lower die, the lower mould is equipped with the oil pan die cavity of placing oil pan after the preliminary shaping, and behind last mould and lower mould compound die, go up the mould and seal the oil pan die cavity, go up the oil transportation mouth that still is formed with with oil pan die cavity intercommunication between mould and the lower mould, the oil transportation mouth communicates with the oil -out of oil transportation booster pump. The utility model discloses in applying to oil pan processing preparation with internal expanding moulding -die utensil and technique, through applying highly pressurised liquid and in the effect of axial applied load, make the steel plate material laminating take place plastic deformation in mould cavity to the semi -manufactured goods oil pan being inside to obtain required oil pan shape.

Description

A kind of oil sump internal expanding compression mould

Technical field

The utility model relates to oil sump process technology.

Background technology

Oil sump, for engine, is assemblied in engine bottom, and mainly as the storage container of machine oil, oil sump is many to be stamped to form by sheet metal, the general employing cast iron that shape is comparatively complicated or aluminium alloy cast molding.

1. sheet stamping molded oil pan: adopt that sheet stamping is shaping makes, can only process simple oil sump, low processing cost, sheet oil drain pan is not suitable with the operating mode of domestic engineering machinery car, easily occurs oil sump Problem of Failure after there is slight impact.

2. iron or aluminium alloy cast molding oil sump, can process comparatively parts with complex structures, and cast iron or aluminium casting oil sump, can adapt to domestic bad working environments, but cost of manufacture is high.

3. steel plate butt welding class oil sump, for increasing machine oil memory space, adopting the inner and outer shell that three kinds different, being stitched together by the technique of argon arc welding, increase machine oil memory space, steel plate butt welding oil sump also cannot adapt to domestic severe operating mode simultaneously.

Utility model content

Technical problem to be solved in the utility model is just to provide a kind of oil sump internal expanding compression mould, for oil sump machine-shaping, reduces costs, and strengthens oil sump intensity.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of oil sump internal expanding compression mould, comprise upper die and lower die, the oil sump die cavity of oil sump after one-step forming at the beginning of described counterdie is provided with and places, after upper die and lower die matched moulds, oil sump die cavity is closed by patrix, described patrix be also formed with the oil transportation mouth be communicated with oil sump die cavity between counterdie, described oil transportation mouth is communicated with the oil-out of oil transportation booster pump.

Preferably, described counterdie comprises die shoe, counterdie fixed head, lower mould bottom plate, described die shoe is used for taking up counterdie fixed head and lower mould bottom plate, described lower mould bottom plate is offered the main part of oil sump die cavity, and described counterdie fixed head is for being positioned at mould by oil sump.

Preferably, described counterdie is also provided with counterdie guide block, and described counterdie guide block applies axial load effect by Driven by Hydraulic Cylinder.

Preferably, described patrix comprises upper mould fixed plate, patrix guide block, upper bolster, described upper bolster is used for taking up upper mould fixed plate, patrix guide block, and described upper mould fixed plate is used for mould to fix on a hydraulic press, and described patrix guide block plays guide effect when mold open.

Because oil sump adopts shock-resisted complex steel sheet as making material, for the easy stress deformation characteristic of shock-resisted complex steel sheet, the utility model innovation by internal expanding compression mould and Technology application in oil sump processing and fabricating, by applying highly pressurised liquid to semi-finished product oil sump inside and axially applying load effect, steel plate materials is fitted in mold cavity plastic deformation occurs, thus obtain required oil sump shape.

Therefore, the beneficial effects of the utility model are:

1. solving foundry goods or aluminum casting oil sump can problem with high costs: adopt shock-resisted complex steel sheet (BVDS-1) to replace original processing raw material (original material ST13 is monolayer material) processing oil drain pan, reduce the production cost (relative foundry goods or aluminium casting) of oil sump part.

2. solve the easy splintering problem of sheet oil drain pan vibrating fatigue/collision rift: itself there is the characteristic that vibration shock isolation hits by adopting shock-resisted complex steel sheet (BVDS-1) due to vibration damping compound, increasing by oil sump being designed to " Z " font the vibration itself brought to oil sump when oil sump surface area is used for offsetting engine operated, preventing oil sump part from presenting mechanical fatigue.Utilize dilatancy and these two kinds of characteristics of impact resistance of shock-resisted complex steel sheet, offset the injury of clashing into oil sump when making oil sump be subject to general shock, the antivibration promoting oil sump increases the reliability of oil sump part simultaneously.

3. for reducing the basic noise of gear pump, reduce overall engine noise: prove that the oil sump adopting shock-resisted complex steel sheet (BVDS-1) to make can reduce the basic noise 0.4dB-0.9dB of engine gear pump according to GB/T16406 acoustic experiment.

4., in order to improve the memory space of machine oil, by the technique of stretching, interior turgor pressure, that the degree of depth of oil sump can be done is comparatively dark, thus promotes machine oil memory space.

5. enhance the intensity of the structure of oil sump: at oil sump surface design fusiformis concave reinforcing rib, shuttle-type concave reinforcing rib is along oil sump continuous distributed, whole oil sump is cascaded, increase the intensity of whole oil sump, the whole outer surface of supporting oil drain pan simultaneously, the die cavity of oil sump is played to the effect of reinforcing, the vibration produced when reducing engine operated is to the injury of oil sump.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is further described:

Fig. 1 a is oil sump front schematic view;

Fig. 1 b is the upward view of oil sump;

Fig. 1 c is the side view of oil sump;

Fig. 2 is oil sump internal expanding compression mould structural representation;

Oil sump front schematic view after the shallow stretching of Fig. 3 a;

Oil sump elevational schematic view after the shallow stretching of Fig. 3 b;

Oil sump front schematic view after Fig. 4 a deep drawn;

Oil sump elevational schematic view after Fig. 4 b deep drawn;

Oil sump front schematic view after Fig. 5 a shaping;

Oil sump elevational schematic view after Fig. 5 b shaping.

Detailed description of the invention

As shown in Fig. 1 a, Fig. 1 b, Fig. 1 c, oil sump 1 comprises oral area section 11, interlude 12, bottom stage 13, and oral area section 11, interlude 12, bottom stage 13 make the Z-shaped structure of the appearance integral of oil sump 1 together.Oil sump 1 is made up of shock-resisted complex steel sheet, and described shock-resisted complex steel sheet is three-layer composite structure, and in three-layer composite structure, top layer, both sides is deep draw steel plate, and middle level is thermosetting resin adhesive.The thickness of described deep draw steel plate is 1.2mm, and the thickness of described thermosetting resin adhesive is 0.4mm.

The oil sump of the relative foundry goods of shock-resisted complex steel sheet or aluminium casting structure, the production cost of oil sump part can be reduced, and itself there is the characteristic that vibration shock isolation hits due to vibration damping compound, increasing by oil sump being designed to " Z " font the vibration itself brought to oil sump when oil sump surface area is used for offsetting engine operated, preventing oil sump part from presenting mechanical fatigue.Utilize dilatancy and these two kinds of characteristics of impact resistance of shock-resisted complex steel sheet, offset the injury of clashing into oil sump when making oil sump be subject to general shock, the antivibration promoting oil sump increases the reliability of oil sump part simultaneously.In addition, the oil sump adopting shock-resisted complex steel sheet to make can reduce the basic noise of engine gear pump.

Oil sump 1 is provided with the reinforcement 14 of indent, and further, the reinforcement of indent is fusiformis structure, oral area section 11 width two sides are respectively provided with a reinforcement extended along its length, interlude 12 width two sides are respectively provided with two reinforcements be obliquely installed 14, bottom stage 13 width two sides are respectively provided with a reinforcement extended along its length 14, the reinforcement 14 of these shuttle-type indents is along oil sump " Z " font structure continuous distributed, whole oil sump is cascaded, increase the intensity of whole oil sump, the whole outer surface of supporting oil drain pan simultaneously, the die cavity of oil sump is played to the effect of reinforcing, the vibration produced when reducing engine operated is to the injury of oil sump.

In addition, oral area section 11 opening edge edge is provided with the flange 15 of horizontal-extending laterally, along turnup ring to being distributed with fixing hole 16.

Above-mentioned oil sump processing method, comprises the steps:

First, a monoblock shock-resisted complex steel sheet is carried out blanking process, obtain some blocks of oil sump blanks;

Secondly, just one-step forming is carried out to oil sump blank;

Finally, oil sump after first one-step forming being put into oil sump internal expanding compression mould, by applying highly pressurised liquid to oil sump inside, obtaining the oil sump shape needed.

Wherein, preliminary molding procedure comprises following three steps:

The first step, shallow stretching, because the oil sump degree of depth is comparatively dark, one-off drawing is shaping cannot the stretched required degree of depth, and therefore first carry out shallow stretching, as shown in Figure 3 a and Figure 3 b shows, plate is stamped out the general shape of oil sump by shallow stretching from tabular;

Second, deep drawn, by deep drawn, that not only the oil sump degree of depth can be done is comparatively dark, improve machine oil memory space, and succeeding stretch can improve yield rate, as shown in figures 4 a and 4b, after deep drawn, substantially reaches projected depth and the shape of oil sump;

3rd step, shaping, oil sump, after twice stretching, can produce distortion in various degree, length and width meeting flare, therefore, increase trimming, revise oil sump appearance and size, as shown in figure 5 a and 5b, after shaping, oil sump oral area fillet and bottom stage are connected fillet post forming with interlude, keep the uniformity with cavity shape.

As shown in Figure 2, oil sump internal expanding compression mould, comprise patrix 3 and counterdie 2, the oil sump die cavity of oil sump after one-step forming at the beginning of described counterdie 2 is provided with and places, after patrix 3 and the 2-in-1 mould of counterdie, oil sump die cavity is closed by patrix 3, described patrix 3 be also formed with the oil transportation mouth, the relief fittings 36 that are communicated with oil sump die cavity between counterdie 2, described oil transportation mouth is communicated with the oil-out of oil transportation booster pump 37.

Described counterdie 2 comprises die shoe 21, counterdie fixed head 23, lower mould bottom plate 22, counterdie guide block 24.Described die shoe 21, for taking up counterdie fixed head 23 and lower mould bottom plate 22, described lower mould bottom plate 22 is offered the main part of oil sump die cavity, and described counterdie fixed head 23 is for being positioned at mould by oil sump.Described counterdie guide block 24 is driven by hydraulic cylinder 25 and applies axial load effect, and by oil sump delivered inside high pressure, its active force is applied to axially, then can produce load at oil sump outer surface while the dispersion of part perisporium.

Described patrix 3 comprises upper mould fixed plate 32, patrix holding pad 33, patrix guide block 34, patrix press-fit block 35, upper bolster 31, described upper bolster 31 is for taking up upper mould fixed plate 32, patrix holding pad 33, patrix guide block 34, patrix press-fit block 35, described upper mould fixed plate 32 is used for mould to fix on a hydraulic press, and described patrix guide block 34 plays guide effect when mold open.Patrix holding pad 33 Main Function prevents flange excess waste in oil sump turgor pressure process from entering mould inside.Patrix press-fit block 35 is mainly patrix guide block 34 and serves, and belongs to lengthening cushion block.

The specific works process of internal expanding compression mould is:

First, open upper die and lower die, pre-turgor pressure semi-finished product oil sump is put into oil sump die cavity inner;

Secondly, closed upper die and lower die, and apply corresponding locked mode pressure, the computing formula of described locked mode pressure is F _c=A _pp _c× 10 ^-3; This formula is the empirical equation drawn in conjunction with industry standard, F _crepresent locked mode pressure (MPa), P _cfor shaping pressure (MPa), A _pfor oil sump projected area (mm in the horizontal plane ²).

Then, oil transportation booster pump carries out supercharging to oil sump inside, pressurize 1 ~ 2min after pressure reaches setting pressure, and wherein, setting pressure computing formula is this formula is the empirical equation drawn in conjunction with industry standard, P _sfor setting pressure, t is oil sump thickness, d is oil sump transverse width, σ _sfor the yield strength of oil sump; Drive the hydraulic cylinder of counterdie guide block also to apply dwell pressure, described dwell pressure remains on 200KN simultaneously; The parameter that axial dwell pressure is drafted by the experience of internal turgor pressure product, technique.

Finally, carry out pressure release, open upper die and lower die by relief fittings, counterdie guide block is outwards movement vertically, is laid down by shaping oil sump.

Wherein, axial dwell pressure is by calculating highly pressurised liquid counter-force, frictional force, and after deformation force parameter, rule of thumb estimation draws.

Specific in the present embodiment, its computational process is:

Highly pressurised liquid counter-force $\underset{\‾}{F_p=\mathrm{\π}\frac{{d_i}^2}{4}{p}_i}=3.14\×\frac{{62}^2}{4}\×39.8=120kN$

Frictional force f _μ =π dl _μ p _i μ=3.14 × 65 × 55.55 × 39.8 × 0.1=45.1kN

Deformation force $F_t=\frac{\mathrm{\π}}{2}{\mathrm{td\σ}}_s=0.5\×3.14\×1.5\×65\×81.5=12.6kN$

Wherein in highly pressurised liquid counter-force calculates, F _prepresent liquid counter-force, d _irepresent entrance pressure mouth diameter (subtracting material thickness), P _irepresent briquetting pressure (theoretical reference value);

During frictional force calculates, F _μrepresent frictional force, d represents entrance pressure mouth diameter, l _μrepresent friction valve, P _irepresent briquetting pressure (theoretical reference value), μ is fixed value (0.1-0.8);

In deformation force calculation, t is oil sump thickness, d is oil sump transverse width, σ _sfor the yield strength of oil sump.

In the present embodiment, axial dwell pressure is highly pressurised liquid counter-force, frictional force, and deformation force sum is added an empirical value and drawn.

Claims (4)

1. an oil sump internal expanding compression mould, it is characterized in that: comprise upper die and lower die, the oil sump die cavity of oil sump after one-step forming at the beginning of described counterdie is provided with and places, after upper die and lower die matched moulds, oil sump die cavity is closed by patrix, described patrix be also formed with the oil transportation mouth be communicated with oil sump die cavity between counterdie, described oil transportation mouth is communicated with the oil-out of oil transportation booster pump.

2. a kind of oil sump internal expanding compression mould according to claim 1, it is characterized in that: described counterdie comprises die shoe, counterdie fixed head, lower mould bottom plate, described die shoe is used for taking up counterdie fixed head and lower mould bottom plate, described lower mould bottom plate is offered the main part of oil sump die cavity, described counterdie fixed head is for being positioned at mould by oil sump.

3. a kind of oil sump internal expanding compression mould according to claim 2, is characterized in that: described counterdie is also provided with counterdie guide block, and described counterdie guide block applies axial load effect by Driven by Hydraulic Cylinder.

4. a kind of oil sump internal expanding compression mould according to claim 1, it is characterized in that: described patrix comprises upper mould fixed plate, patrix guide block, upper bolster, described upper bolster is used for taking up upper mould fixed plate, patrix guide block, described upper mould fixed plate is used for mould to fix on a hydraulic press, and described patrix guide block plays guide effect when mold open.