WO2016082585A1

WO2016082585A1 - Thin-walled oil pipe insert oil pan die-casting method

Info

Publication number: WO2016082585A1
Application number: PCT/CN2015/086463
Authority: WO
Inventors: 戴小慧; 季晓菊; 安玉山; 贺小省; 张国方
Original assignee: 广东鸿图南通压铸有限公司
Priority date: 2014-11-21
Filing date: 2015-08-10
Publication date: 2016-06-02
Also published as: CN104525894B; CN104525894A

Abstract

A thin-walled oil pipe insert oil pan (8) die-casting method, comprising: placing an oil pipe into an oven for preheating; moving a machine bottom wood to the middle of a mold to prepare to mount the oil pipe; removing the heated oil pipe from the oven, maintaining the surface of the oil pipe free of oil stain, and aligning the middle and two ends of the oil pipe, a number one oil pipe (1) being mounted above, a number two oil pipe (2) being mounted below, and the number one oil pipe (1) and the number two oil pipe (2) being respectively mounted on the fixture points corresponding to the oil pan (8); checking whether the number one oil pipe (1) and the number two oil pipe (2) are fitted with a U-shaped engagement slot (4), the number one oil pipe (1) being connected to the number two oil pipe (2) via several aluminum insert blocks, the aluminum insert blocks being fixed on the U-shaped engagement slot (4) of the mold prior to a die-casting machine mold perfusion; removing the oil pan (8) after completing production; and checking whether the production has exposed oil pipes, damages to oil pipe feeding and each pinholes, and burnt sticky aluminum of sandwiched layers and from different angles. The method has the following advantages: the oil pipe is positioned accurately, aluminum cannot slop in a positioning hole, and the oil pipe cannot be flattened and deformed by uneven forces.

Description

Die casting method for thin-walled oil pipe insert oil sump

Technical field

The invention relates to a die casting method for a thin-walled oil pipe insert oil sump.

Background technique

The oil sump is located at the lower part of the engine and is detachable and seals the crankcase as the outer casing of the oil sump. The oil pan is mostly stamped from thin steel plates, and the shape is more complicated, generally cast iron or aluminum alloy casting. The inside is equipped with a stabilizing oil baffle to avoid the oil surface turbulence caused by the diesel engine bumping, which is conducive to the precipitation of lubricating oil impurities, and the oil dipstick is installed on the side to check the oil quantity. In addition, the bottom of the bottom of the oil pan is also equipped with an oil drain plug.

Most of the cars seen on the market are wet sump. The reason why it is named wet sump is that the crankshaft crank of the engine and the big end of the connecting rod are immersed in the lubricating oil of the oil sump once every revolution of the crankshaft. It plays a lubricating role. At the same time, due to the high-speed operation of the crankshaft, each time the crank is immersed in the oil pool, it will arouse a certain amount of oil and oil mist, and lubricate the crankshaft and the bearing bush, which is called splash lubrication. This has certain requirements on the liquid level of the lubricating oil in the oil sump. If it is too low, the crankshaft crank and the large end of the connecting rod cannot be immersed in the lubricating oil, resulting in lack of lubrication and smooth crankshaft and connecting rod and bearing bush. If the lubricating oil level is too high, the bearing will be immersed in the whole, and the rotational resistance of the crankshaft will increase, eventually leading to a decrease in engine performance, and at the same time, the lubricating oil easily enters the combustion chamber of the cylinder, causing problems such as engine burning oil and spark plug carbon deposit. The lubrication method is simple in structure and does not require a separate oil tank, but the inclination of the vehicle work should not be too large, otherwise the burnt cylinder accident may be caused by oil cut or oil leakage.

The dry sump is used in many racing engines. It does not store oil in the oil sump, or more accurately there is no oil sump. These moving friction surfaces of the crankcase are all lubricated by pressing the oil through a number of orifices. Since the dry sump engine eliminates the function of the oil storage of the oil sump, the height of the crude oil sump is greatly reduced, and the height of the engine is also reduced. The benefit of lowering the center of gravity is that it is advantageous for handling. The main advantage is to avoid the disadvantages of the wet sump that are caused by intense driving.

However, since the pressure of the lubricating oil is all derived from the oil pump. The oil pump power is connected through the gears through the rotation of the crankshaft. Although oil pumps are also required in wet sump engines to provide pressure lubrication to the camshaft. But this pressure is very small, and the oil pump requires very little power. However, in a dry sump engine, the strength of this pressure lubrication needs to be much greater. Moreover, the oil pump is also much larger than the oil pump of the wet sump engine. Therefore, the oil pump needs more power at this time. This is like a supercharged engine that consumes a portion of the engine's power. Especially at high speeds, the engine speed increases, the strength of the friction components increases, and the amount of oil required for lubrication is also increased. Therefore, the oil pump is required to provide more pressure, and the power consumption of the crankshaft is also intensified.

Obviously, this design is not suitable for ordinary civilian car engines, because it needs to lose some of the engine's power, which not only affects the power output, but also is not conducive to improving economy. Therefore, the dry sump will only be used on large displacement or high power engines, such as those that are born for intense driving. For example, Lamborghini is a dry oil sump design. For it, it is more important to improve the lubrication at the limit and to obtain a lower center of gravity. The loss of power can be compensated for by other aspects such as increasing displacement. Sex, this model does not need to be considered at all.

The thin-walled oil pipe is located in the oil sump. When the traditional process is used in die-casting, it is easy to cause the oil pipe to be not placed in place, the oil pipe positioning hole runs aluminum, and the oil pipe is easy to be flattened and deformed.

Summary of the invention

The object of the present invention is to overcome the above limitations, thereby providing a die casting method for a thin-walled oil pipe insert oil sump, which has the advantages that the oil pipe is placed in position through the positioning hole on the oil sump, and the oil pipe positioning hole does not run aluminum. The tubing will not be flattened and deformed due to uneven force.

The object of the present invention is achieved by the following technical solution: a die casting method for a thin-walled oil pipe insert oil sump, the steps are as follows:

A. Put the oil pipe into the oven and preheat it. Put the No. 1 oil pipe on the upper layer and the No. 2 oil pipe on the lower layer. The preheating temperature in the oven is set at 150 °C, and the actual preheating temperature is between 120 °C and 150 °C. Hot time 5 minutes;

B. The front door of the die casting machine is opened, and the bottom board of the machine is moved to the middle of the mold to prepare for the installation of the oil pipe;

C. Take out the preheated oil pipe from the oven, keep the oil pipe surface free of oil, align the middle and the ends of the oil pipe, the No. 1 oil pipe is installed at the top, the No. 2 oil pipe is installed below, the No. 1 oil pipe and the No. 2 oil pipe are installed separately. At a fixed point corresponding to the oil sump;

D. Install the oil pipe. First check whether there is any feed in the fixed hole. Then insert the big end of the No. 1 tubing into the No. 1 point of the mold, the middle part is aligned with the U-shaped card slot, and the small end of the No. 1 tubing is inserted into the mold 2. At the point of the point; the big end of the No. 2 tubing is inserted at the No. 3 point, the middle part is aligned with the U-shaped card slot, and the small end of the No. 2 tubing is inserted at the No. 4 point to check whether the No. 1 tubing and the No. 2 tubing are U. The type of card slot is fitted, and the No. 1 oil pipe and the No. 2 oil pipe are connected through a plurality of aluminum insert blocks, and the aluminum insert block is fixed on the U-shaped card slot of the mold before the die casting machine is filled with the mold;

E. The die-casting machine is filled with the mold to produce the product. After the production is completed, the oil pan runner is clamped with pliers, and the bottom of the oil pan is dragged with a wooden hammer to take out the oil pan.

F. Check whether the product has oil pipe exposed, tubing feeding and pinhole damage, cold partition at the tail of the water tail, interlayer and burnt aluminum at each corner. After the inspection, stack the products on the board.

In summary, the present invention has the following advantages: the oil pipe is positioned accurately, the oil pipe positioning hole does not run aluminum, and the oil pipe is not crushed and deformed due to uneven force.

DRAWINGS

Figure 1 is an assembled structural view of the present invention;

Figure 2 is a schematic view of the No. 1 tube of the present invention;

Figure 3 is a schematic view of a tube No. 2 of the present invention;

In the figure, the number: 1-1 oil pipe, 101-1 oil pipe big end, 102-1 oil pipe small end, 2-2 oil pipe, 201-2 oil pipe big end, 202-2 oil pipe big end, 3- No. 1 point, 4-U type card slot, point 5-2, point 6-3, point 7-4, 8-oil bottom case.

detailed description

In order to further understand the present invention, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. The embodiments are only used to explain the present invention and are not intended to limit the scope of the present invention.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , a die casting method for a thin-walled oil pipe insert oil sump of the present invention: preheating the oil pipe into an oven, placing a No. 1 oil pipe 1 on the upper layer and No. 2 on the lower layer in the oven Tubing 2, the preheating temperature in the oven is set at 150 °C, the actual preheating temperature is between 120 °C and 150 °C, and the preheating time is 5 minutes; the front door of the die casting machine is opened, and the bottom board of the machine is moved to the middle of the mold for installation. Preparation of the oil pipe; take out the preheated oil pipe from the oven, keep the oil pipe surface free of oil, align the middle and the ends of the oil pipe, the No. 1 oil pipe 1 is installed above, the No. 2 oil pipe 2 is installed below, the No. 1 oil pipe 1 and The No. 2 oil pipe 2 is respectively installed on the corresponding fixed point of the oil pan 8; when installing the oil pipe, first check whether there is feed in the fixed hole, and then insert the No. 1 tubing big end 101 into the mold No. 1 point 3, the middle part Align the positioned U-shaped card slot 4, the No. 1 tubing small end 102 is inserted into the mold No. 2 point 5; the No. 2 tubing big end 201 is aligned with the No. 3 point 6 insertion, and the middle portion is aligned with the positioned U-shaped card slot 4, No. 2 tubing small end 202 is inserted at the 4th point 7 to check whether the No. 1 tubing 1 and No. 2 tubing 2 are attached to the U-shaped slot 4, No. 1 The pipe 1 and the 2nd oil pipe 2 are connected by a plurality of aluminum insert blocks, and the aluminum insert block is fixed on the U-shaped card slot 4 of the mold before the die-casting machine is filled; the die-casting machine is filled with the mold to produce the product, and after the production is completed, Pliers clamp the oil pan runner, use a wooden hammer to drag the bottom of the oil pan 8 to take out the oil pan 8; check whether the product has oil pipe exposed, tubing feed and pinhole damage, water tail core The cold insulation, the interlayer and the burnt aluminum of each corner position are stacked on the wooden board after the inspection.

Example 1: Put the oil pipe into the oven and preheat it. Put the No. 1 oil pipe 1 on the upper layer and the No. 2 oil pipe 2 on the lower layer. The preheating temperature in the oven is set at 150 ° C. The actual preheating temperature is 120 ° C. Preheating After 5 minutes; after the production is completed, the operator clamps the oil pan runner with pliers, drags the bottom of the oil pan 8 with a wooden hammer, places the product on the knocking table, and the operator holds the pliers in the left hand to hold the product runner In the right hand, take the wooden hammer to remove the slag bag from the product, and then use a wooden hammer to break the runners on both sides. The wooden hammer hits the middle of the handle and knocks the handle. When the product is finished after inspection, the layer is placed six. Piece, put six layers, one board 36 pieces.

Example 2: Put the oil pipe into the oven for preheating. Put the No. 1 oil pipe 1 on the upper layer and the No. 2 oil pipe 2 on the lower layer. The preheating temperature in the oven is set at 150 ° C. The actual preheating temperature is 130 ° C. Preheating After 5 minutes; after the production is completed, the operator clamps the oil pan runner with pliers, drags the bottom of the oil pan 8 with a wooden hammer, places the product on the knocking table, and the operator holds the pliers in the left hand to hold the product runner , the right hand takes a wooden hammer to put the product After the slag bag is removed, the runners are knocked off with a wooden hammer. The wooden hammer hits the middle of the handle and the handle is broken. When the product is finished after inspection, six pieces are placed on one layer, and six layers are placed. 36 pieces.

Example 3: Put the oil pipe into the oven for preheating. Put the No. 1 oil pipe 1 on the upper layer and the No. 2 oil pipe 2 on the lower layer. The preheating temperature in the oven is set at 150 ° C. The actual preheating temperature is 140 ° C. Preheating After 5 minutes; after the production is completed, the operator clamps the oil pan runner with pliers, drags the bottom of the oil pan 8 with a wooden hammer, places the product on the knocking table, and the operator holds the pliers in the left hand to hold the product runner In the right hand, take the wooden hammer to remove the slag bag from the product, and then use a wooden hammer to break the runners on both sides. The wooden hammer hits the middle of the handle and knocks the handle. When the product is finished after inspection, the layer is placed six. Piece, put six layers, one board 36 pieces.

Claims

A die casting method for a thin-walled oil pipe insert oil sump, characterized in that the steps are as follows:

A. Put the oil pipe into the oven and preheat it. Put the No. 1 oil pipe (1) on the upper layer and the No. 2 oil pipe (2) on the lower layer;

B. The front door of the die casting machine is opened, and the bottom board of the machine is moved to the middle of the mold to prepare for the installation of the oil pipe;

C. Take out the preheated oil pipe from the oven, keep the oil pipe surface free of oil, align the middle and the ends of the oil pipe, the No. 1 oil pipe (1) is installed above, the No. 2 oil pipe (2) is installed below, No. 1 oil pipe (1) and the No. 2 oil pipe (2) are respectively installed on the corresponding fixed points of the oil pan (8);

D. Install the oil pipe: first check whether there is any feed in the fixed hole, and then insert the big end of the 1st pipe (101) into the mold No. 1 (3), and the middle part is aligned with the U-shaped card slot (4). The No. 1 tubing small end (102) is inserted into the No. 2 point (5) of the mold; the No. 2 tubing big end (201) is inserted at the No. 3 point (6), and the intermediate part is aligned with the positioned U-shaped card slot (4) , the small end of the 2nd tubing (202) is inserted at the 4th point (7), and it is checked whether the No. 1 tubing (1) and the No. 2 tubing (2) are attached to the U-shaped slot (4);

E. The die-casting machine is filled with the mold to produce the product. After the production is completed, the oil pan runner is clamped with pliers, and the bottom of the oil pan (8) is dragged with a wooden hammer to take out the oil pan (8);

F. Check whether the product has oil pipe exposed, tubing feeding and pinhole damage, cold partition at the tail of the water tail, interlayer and burnt aluminum at each corner. After the inspection, stack the products on the board.
The die casting method for a thin-walled oil pipe insert oil sump according to claim 1, wherein the preheating temperature in the oven is set at 150 ° C, and the actual preheating temperature is between 120 ° C and 150 ° C, and the preheating is performed. Time is 5 minutes.
The die casting method for a thin-walled oil pipe insert oil sump according to claim 1, wherein the No. 1 oil pipe and the No. 2 oil pipe are connected by a plurality of aluminum insert blocks, and the aluminum insert block is before the die casting machine is filled by the die casting machine. It is fixed to the U-shaped card slot (4) of the mold.