CN112108644A

CN112108644A - Hub precision casting device and process

Info

Publication number: CN112108644A
Application number: CN202010433089.6A
Authority: CN
Inventors: 邓超
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-22

Abstract

The invention relates to a hub precision casting device and a hub precision casting process, which are characterized in that: the device includes the base and sets up the casting model at base upper surface middle part, and set up casting funnel directly over the casting model, casting funnel's rear side is provided with first lifting unit, casting model left side is provided with second lifting unit, casting model upper end right side is provided with the ceramic plate, just the ceramic plate right side is provided with third lifting unit, ceramic plate right-hand member portion passes through the data line and is connected with the computer, the computer bottom is provided with the desk. The surface quality of the hub casting is guaranteed through the cooperation of the multiple casting models and the accurate detection of the temperature change in the casting process.

Description

Hub precision casting device and process

Technical Field

The invention relates to the technical field of precision casting, in particular to a hub precision casting device and a hub precision casting process.

Background

The wheel hub is a cylindrical metal part which is used for supporting the wheel hub by taking a shaft as a center in the wheel hub and is used as an important component of a vehicle part, most wheel hubs on the market are made of steel, the manufacturing process of the steel wheel hub is simple, the cost is relatively low, the metal fatigue resistance is very strong, but the steel wheel hub is large in mass, large in inertial resistance and poor in heat dissipation performance, and rusts very easily.

The hub is generally manufactured by a casting process, but the problems of shrinkage porosity, cold shut, insufficient pouring and the like are easy to occur due to insufficient fluidity and feeding of metal liquid and improper control of temperature and pressure in the casting process, so that the surface quality of a hub casting is poor. Compared with the traditional casting process, the casting obtained by precision casting has more accurate size and better surface finish, can be directly used without processing or with little processing, and can better meet the requirements of people. Based on the above, there is a need for a hub precision casting apparatus and process to solve the above problems.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a hub precision casting apparatus and process, which can accurately detect temperature changes during casting by using a plurality of casting models in combination, and ensure the surface quality of a hub casting.

The technical scheme adopted by the invention is as follows:

the invention provides a hub precision casting device which comprises a base, a casting model and a casting funnel, wherein the casting model is arranged in the middle of the upper surface of the base, the casting funnel is arranged right above the casting model, a first lifting assembly is arranged on the rear side of the casting funnel, a second lifting assembly is arranged on the left side of the casting model, a ceramic plate is arranged on the right side of the upper end of the casting model, a third lifting assembly is arranged on the right side of the ceramic plate, the right end of the ceramic plate is connected with a computer through a data line, and a computer desk is arranged at the bottom of the computer.

Further, first lifting unit includes vertical installation at the first lead screw slide rail of base upper end and installs the first motor at first lead screw slide rail upper end to and the funnel of front side through first slider and first lead screw slide rail sliding connection presss from both sides, the inside fixedly connected with of funnel clamp the casting funnel.

Furthermore, the second lifting assembly comprises a second lead screw slide rail vertically installed at the upper end part of the base, a second motor installed at the upper end part of the second lead screw slide rail, and a manipulator with the right side connected with the second lead screw slide rail in a sliding mode through a second sliding block.

Furthermore, a sprue is formed in the middle of the upper surface of the ceramic plate, risers are equidistantly arranged at the left end and the right end of the sprue, and a plurality of temperature measuring probes are buried in the ceramic plate in an array mode.

Further, third lifting unit includes vertical third lead screw slide rail of installing at the base upper end and installs the third motor at third lead screw slide rail upper end to and the telescopic link of passing through third slider and third lead screw slide rail sliding connection in the left side, telescopic link left side fixedly connected with ceramic plate presss from both sides.

Furthermore, a rectangular groove is formed in the front side of the upper end portion of the casting model, and a rectangular block matched with the rectangular groove is arranged on the front side of the lower end portion of the casting model.

A hub precision casting process, the process comprising the steps of: step 1, the system determines relevant parameters: number N of casting patterns, structure phase transition temperature T₁Local temperature difference expectation value T₂Opening temperature T₃(ii) a Step 2, controlling the manipulator to pick up the uppermost casting model and place the uppermost casting model under the casting funnel, pushing the ceramic plate out by the telescopic rod until a straight gate is vertically aligned with a gate at the bottom of the casting funnel, and driving the ceramic plate to move downwards by the third slide block until the bottom of the ceramic plate is flush with the top of the casting model; step 3, starting a first motor, driving the casting funnel to move downwards by the first sliding block until a pouring gate of the casting funnel is flush with the ceramic plate, and starting casting; step 4, self-heating cooling is carried out, the temperature measuring probe transmits real-time temperature data to the computer, the computer processes the data, and the maximum value of the real-time temperature is recorded as T_maxMinimum value of T_minWhen T is_max≤T₁And T_max-T_min≤T₂During the process, the atomized cooling mode is adopted for chilling until T_max≤T₃When the casting funnel and the ceramic plate are cooled, the casting funnel and the ceramic plate are returned to the initial positions; and 5, repeating the step k times until k is more than or equal to N-1, and finishing casting of all casting models.

The invention has the beneficial effects that:

1. the plurality of casting models are arranged to decompose the complex casting along the designated direction at equal intervals and then cast one by one, so that the problems of shrinkage porosity, insufficient casting and the like in the traditional casting process can be effectively avoided, and the surface quality of the hub casting is ensured.

2. Through burying the temperature probe underground in the ceramic plate, the temperature variation in the accurate detection casting process, strict the critical point of accuse cooling temperature has greatly shortened the unpacking time, has improved production efficiency.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of a hub precision casting apparatus according to the present invention;

FIG. 2 is a process flow diagram of the present invention;

FIG. 3 is a schematic view showing the structure of a ceramic plate according to the present invention;

FIG. 4 is a schematic view of the structure of the casting mold of the present invention.

In the figure: 1. a first motor; 2. a first lead screw slide rail; 3. a first slider; 4. casting a funnel; 5. a funnel clamp; 6. a manipulator; 7. a second motor; 8. a second slider; 9. a second lead screw slide rail; 10. casting a model; 11. a base; 12. a computer; 13. a computer desk; 14. a data line; 15. a third slider; 16. a third lead screw slide rail; 17. a third motor; 18. a telescopic rod; 19. a ceramic plate clip; 20. a riser; 21. a sprue; 22. a ceramic plate; 23. a temperature measuring probe; 24. a rectangular block; 25. a rectangular groove.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

It should be noted that in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not mean that a device or an element must have a specific orientation, be configured and operated in a specific orientation.

Referring to fig. 1, a specific structure of an embodiment of a hub precision casting apparatus according to the present invention is shown. This device includes base 11 and the casting model 10 of setting at base 11 upper surface middle part to and set up casting funnel 4 directly over casting model 10, casting funnel 4's rear side is provided with first lifting unit, casting model 10 left side is provided with second lifting unit, casting model 10 upper end right side is provided with ceramic plate 22, just ceramic plate 22 right side is provided with third lifting unit, ceramic plate 22 right-hand member portion is connected with computer 12 through data line 14, computer 12 bottom is provided with desk 13.

First lifting unit includes vertical first lead screw slide rail 2 of installing at 11 upper ends of base and installs the first motor 1 at 2 upper ends of first lead screw slide rail to and the funnel clamp 5 that the front side passes through first slider 3 and 2 sliding connection of first lead screw slide rail, the inside fixedly connected with of funnel clamp 5 casting funnel 4.

The second lifting assembly comprises a second lead screw slide rail 9 vertically installed at the upper end part of the base 11, a second motor 7 installed at the upper end part of the second lead screw slide rail 9, and a manipulator 6, wherein the right side of the manipulator is connected with the second lead screw slide rail 9 in a sliding mode through a second sliding block 8.

The middle part of the upper surface of the ceramic plate 22 is provided with a sprue 21, risers 20 are equidistantly arranged at the left end and the right end of the sprue 21, and a plurality of temperature measuring probes 23 are embedded in the ceramic plate 22 in an array mode.

The third lifting assembly comprises a third lead screw slide rail 16 vertically installed at the upper end part of the base 11, a third motor 17 installed at the upper end part of the third lead screw slide rail 16, a telescopic rod 18 which is connected with the third lead screw slide rail 16 in a sliding mode through a third slider 15 at the left side, and a ceramic plate clamp 19 fixedly connected to the left side of the telescopic rod 18.

The front side of the upper end part of the casting model 10 is provided with a rectangular groove 25, and the front side of the lower end part is provided with a rectangular block 24 matched with the rectangular groove 25.

Referring to fig. 2, a specific flow of the hub precision casting process provided by the invention is given, and the process specifically comprises the following steps:

step 1, the system determines relevant parameters: number N of casting patterns 10, structure phase transition temperature T₁Local temperature difference expectation value T₂Opening temperature T₃(ii) a In this embodiment, the automobile hub is equally divided along the radial direction and 5 corresponding casting models 10 are made, and the used material is cast iron, so that the table is looked up to obtainTo the tissue phase transition temperature T₁727 deg.C, local expected value T of temperature difference ₂16 deg.C, open box temperature T₃＝400℃。

Step 2, controlling the manipulator 6 to pick up the uppermost casting model 10 and place the uppermost casting model under the casting funnel 4, pushing the ceramic plate 22 out by the telescopic rod 18 until the sprue 21 is vertically aligned with the sprue at the bottom of the casting funnel 4, and driving the ceramic plate 22 to move downwards by the third slide block 15 until the bottom of the ceramic plate 22 is flush with the top of the casting model 10;

step 3, starting the first motor 1, driving the casting funnel 4 to move downwards by the first sliding block 3 until a pouring gate of the casting funnel 4 is flush with the ceramic plate 22, and starting casting;

step 4, self-heating cooling is carried out, the temperature measuring probe 23 transmits real-time temperature data to the computer 12, the computer 12 processes the data, and the maximum value of the real-time temperature is T_maxMinimum value of T_minWhen T is_max≤T₁And T_max-T_min≤T₂When the temperature is higher than the temperature of the base body, the temperature is changed uniformly, and the local temperature is not higher or lower, and the base body is chilled by adopting an atomizing cooling mode until T_max≤T₃When the casting funnel and the ceramic plate are cooled, the casting funnel and the ceramic plate are returned to the initial positions;

and 5, repeating the step k times until k is more than or equal to N-1, and finishing casting of all casting models.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a hub precision casting device which characterized in that: the device includes the base and sets up the casting model at base upper surface middle part, and set up casting funnel directly over the casting model, casting funnel's rear side is provided with first lifting unit, casting model left side is provided with second lifting unit, casting model upper end right side is provided with the ceramic plate, just the ceramic plate right side is provided with third lifting unit, ceramic plate right-hand member portion passes through the data line and is connected with the computer, the computer bottom is provided with the desk.

2. A hub precision casting apparatus according to claim 1, wherein: first lifting unit includes vertical installation at the first lead screw slide rail of base upper end and installs the first motor of first lead screw slide rail upper end to and the front side through first slider with first lead screw slide rail sliding connection's funnel presss from both sides, the inside fixedly connected with of funnel clamp the casting funnel.

3. A hub precision casting apparatus according to claim 1, wherein: the second lifting assembly comprises a second lead screw slide rail vertically mounted at the upper end of the base, a second motor mounted at the upper end of the second lead screw slide rail, and a manipulator with the right side connected with the second lead screw slide rail in a sliding manner through a second slider.

4. A hub precision casting apparatus according to claim 1, wherein: the ceramic plate upper surface middle part has seted up the sprue, both ends equidistance is provided with the rising head about the sprue, the inside array of ceramic plate has buried a plurality of temperature probe underground.

5. A hub precision casting apparatus according to claim 1, wherein: the third lifting assembly comprises a third lead screw slide rail vertically mounted at the upper end of the base, a third motor mounted at the upper end of the third lead screw slide rail, and a telescopic rod which is connected with the left side of the third lead screw slide rail in a sliding manner through a third slider, wherein the left side of the telescopic rod is fixedly connected with a ceramic plate clamp.

6. A hub precision casting apparatus according to claim 1, wherein: a rectangular groove is formed in the front side of the upper end portion of the casting model, and a rectangular block matched with the rectangular groove is arranged on the front side of the lower end portion of the casting model.

7. The precise casting process of the hub is characterized in that: the process comprises the following steps:

step 1, the system determines relevant parameters: number N of casting patterns, structure phase transition temperature T₁Local temperature difference expectation value T₂Opening temperature T₃；

Step 2, controlling the manipulator to pick up the uppermost casting model and place the uppermost casting model under the casting funnel, pushing the ceramic plate out by the telescopic rod until a straight gate is vertically aligned with a gate at the bottom of the casting funnel, and driving the ceramic plate to move downwards by the third slide block until the bottom of the ceramic plate is flush with the top of the casting model;

step 3, starting a first motor, driving the casting funnel to move downwards by the first sliding block until a pouring gate of the casting funnel is flush with the ceramic plate, and starting casting;

step 4, self-heating cooling is carried out, the temperature measuring probe transmits real-time temperature data to the computer, the computer processes the data, and the maximum value of the real-time temperature is recorded as T_maxMinimum value of T_minWhen T is_max≤T₁And T_max-T_min≤T₂During the process, the atomized cooling mode is adopted for chilling until T_max≤T₃When the casting funnel and the ceramic plate are cooled, the casting funnel and the ceramic plate are returned to the initial positions;