A kind of pressure casting method of main beating cap mold insert lower cylinder body
Technical field
The present invention relates to a kind of pressure casting methods of main beating cap mold insert lower cylinder body.
Background technology
The effect of engine main bearing cover is exactly to support bent axle, ensures bent axle normal operation and power output.
1. sliding bearing is made of two half dollars, for the first half on body, lower half is solid by bearing cap, i.e. FE Tiler
It is scheduled on body.The bearing shell on body is packed into first, then bent axle is packed into, finally fills FE Tiler, is completed.
2. the base bearing of roller bearing formula is that bearing outer ring is packed into body, inner ring and roller on bent axle, assembly is bent
It is packed by After-Body when axis.
Bearing cap is the lid of bearing face, and effect is:
1:Prevent the raceway of the foreign matters such as dust intrusion rolling element;
2:Ensure lubricant(Lubricating grease)It only works and does not spill over to rolling element and raceway.
3:Prevent the vulnerable parts such as roller holder from being damaged by outer force effect to a certain extent.
For the bearing cover of engine, it includes:One bonding part for being engaged on engine component;
The lid side axle neck portion of one bearing shaft component;One core component, it is made with the material different from base material and in casting axis
It is arranged in casting pattern when holding lid, core component includes a core component side axle neck portion and is arranged in core component side shaft journal
The core component screw hole of partial both sides;It is characterized in that core component side axle neck portion is arranged along lid side axle neck portion, and
Core component is by including vertically that the casting draft pin of step part is arranged to and casting pattern in casting pattern
Surface is at the state of sowing discord;And the radius of curvature of core component side axle neck portion so makes the curvature more than lid side axle neck portion
Radius, so that the gap between lid side axle neck portion and core component side axle neck portion is pulled out more than core component screw hole with casting
Gap between mould pin.
Fracture failure occurs for bearing cap:
In engine working process, gas force is acted on by toggle in main beating cap so that it bears larger
Pressure, work together reciprocal inertia force and centrifugal force make it receive certain bending and twisting action again.To ensure that engine is normal
Work, main beating cap have to accurate positioning in lower cylinder body and have enough strength and stiffness curved under different operating modes to bear
The effects that bent, torsion and tension and compression power.A part of the main beating cap as main bearing seat, its structure affect determining for main bearing seat
Position, strength and stiffness also just determine that can engine normal operation.
Invention content
Goal of the invention:The purpose of the present invention is to solve deficiencies in the prior art, provide a kind of main beating cap mold insert
The pressure casting method of lower cylinder body.By being accurately positioned for main beating cap, main beating cap location hole will not be into aluminium, and main beating cap will not be because
For washed away into cavity molten aluminum by high speed cause unbalance stress to misplace, flattening deformation.
Technical solution:The purpose of invention is achieved through the following technical solutions:Under a kind of main beating cap mold insert
The pressure casting method of cylinder body, steps are as follows:
A, main beating cap and mold insert are placed on to be put into and be automatically drained out on imprinter pipeline by operator, and manipulator grabs automatically
Axle journal preheating machine preheats in carrying out.Main beating cap temperature controls between 190 DEG C -250 DEG C.
B, the main beating cap after taking out heating in preheating machine, keeps main beating cap surface cleaning without greasy dirt, by 4 main shafts
It holds lid to be all aligned up and down, is sequentially placed from top to bottom, is separately mounted to be put on the corresponding fixed point of lower cylinder body mold.
C, die casting machine molding perfusion, produce product, after the completion of production, clamp lower cylinder body running channel automatically by manipulator, will under
Cylinder body takes out.
D, die casting machine automatic decision certified products, it is unqualified to be directly placed into NG product sliding slots.Certified products are successively by the packaging that removes slag
It sets, bosh, saw blade cutting machine, finally certified products is put on the belt.
E, check whether product has the button of exposed main beating cap, charging and each precast hole to hinder, the cold shut at water tail sliding block, press from both sides
Layer, the burn for being molded bad and each angle position glue aluminium, and product is stacked on plank after inspection.
In conclusion the present invention have it is following a little:By being accurately positioned for main beating cap, main beating cap location hole will not
Into aluminium, main beating cap will not lead to unbalance stress and misplace, flattening deformation because of being washed away into cavity molten aluminum by high speed.
Advantageous effect.
Description of the drawings
Fig. 1 is the system schematic of the pointing machine of the present invention;
Fig. 2 is the lower cylinder body of the present invention;
Fig. 3 is the main beating cap of the present invention.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
Such as Fig. 1-3, main beating cap and mold insert are placed on to be put into and be automatically drained out on imprinter pipeline by operator, manipulator
The automatic axle journal preheating machine that grabs carries out interior preheating.Main beating cap temperature controls between 190 DEG C -250 DEG C.It is taken from preheating machine
Go out the main beating cap after heating, keeps main beating cap surface cleaning without greasy dirt, 4 main beating cap are all aligned up and down, from
Top to bottm is sequentially placed, and is separately mounted to be put on the corresponding fixed point of lower cylinder body mold.Die casting machine molding perfusion, production production
Product after the completion of productions, lower cylinder body running channel are clamped by manipulator, lower cylinder body is taken out automatically.Die casting machine automatic decision certified products, no
Qualification is directly placed into NG product sliding slots.Certified products pass through slag ladle removing device, bosh, saw blade cutting machine successively, finally will be qualified
Product are put on the belt.Check whether product has the button of exposed main beating cap, charging and each precast hole hinder, is at water tail sliding block cold
Every, interlayer, molding is bad and the burn of each angle position glues aluminium, and product is stacked on plank after inspection.
In conclusion the present invention have it is following a little:By being accurately positioned for main beating cap, main beating cap location hole will not
Into aluminium, main beating cap will not lead to unbalance stress and misplace, flattening deformation because of being washed away into cavity molten aluminum by high speed.
Above-mentioned specific implementation mode, technical concept and structure feature only to illustrate the invention, it is therefore intended that allow and be familiar with this
The stakeholder of item technology can implement according to this, but the above content is not intended to limit protection scope of the present invention, every according to this hair
Any equivalent change or modification made by bright Spirit Essence, should all fall under the scope of the present invention.