CN114810873A

CN114810873A - Integrated as-cast disk hub and machining method thereof

Info

Publication number: CN114810873A
Application number: CN202210542860.2A
Authority: CN
Inventors: 田世良
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-07-29

Abstract

The invention belongs to the technical field of automobile accessories, and particularly relates to an integrated as-cast disc hub and a processing method thereof, which comprises a hub, wherein a composite brake disc is integrally formed at the right end of the hub, the outer wall of the brake disc is provided with a vent hole, a vent cavity is arranged in the brake disc, and ribs are integrally formed at the joint of the hub and the brake disc. The structural strength is more stable.

Description

Integrated as-cast disk hub and machining method thereof

Technical Field

The invention relates to the technical field of automobile parts, in particular to an integrated as-cast hub and a processing method thereof.

Background

The brake disc is simply a round disc which also rotates when the vehicle travels. The brake caliper clamps the brake disc to generate braking force, and when the brake is stepped, the brake caliper clamps the brake disc to play a role in reducing speed or stopping;

at present brake disc and wheel hub mainly pass through bolt fixed connection, assembly tolerance can't be eliminated, bolted connection's mode, and through bolted connection mode, because the problem of processing, make the uniformity after the pilot hole between hardly guarantees the brake disc installation, lead to the brake disc phenomenon of beating to appear in the brake process, cause the brake disc shake abnormal sound and finally lead to the brake disc phenomenon of ftractureing to appear, make unable assurance maximum area of contact between brake disc and the brake block, can aggravate the wearing and tearing of brake disc and brake block, greatly reduce the life and the brake performance of brake disc and brake block.

Therefore, the integrated cast-state disc hub and the processing method thereof are provided, no assembling type bolt is provided, the processing of a connecting structure is avoided, the structural weight is greatly reduced, the parallelism between the hub and the brake disc is unified through an integrated structure, the prestress generated by the deformation degree of the brake disc is avoided, the maximum contact area between the brake disc and the brake pad is kept, the abrasion degree between the brake disc and the brake pad is reduced, and meanwhile, through the material in the material of the brake disc, the heat dissipation performance of the brake disc is better, the shock absorption effect is good, and the structural strength is more stable.

Disclosure of Invention

The invention aims to provide an integrated as-cast disc hub and a processing method thereof, and aims to solve the problems that in the background technology, a brake disc and a hub are fixedly connected through bolts, assembly tolerance cannot be eliminated, the brake disc is connected through the bolts, and due to the processing problem, assembly holes between the brake disc and the hub are difficult to ensure the consistency of the mounted brake disc, so that the brake disc jumps in the braking process, the brake disc shakes and makes abnormal sound, the brake disc cracks finally, the maximum contact area between the brake disc and a brake pad cannot be ensured, the abrasion between the brake disc and the brake pad is aggravated, and the service life and the braking performance of the brake disc and the brake pad are greatly reduced.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an integral type as-cast state dish hub, includes wheel hub, wheel hub right-hand member integrated into one piece has compound brake disc, the ventilation hole has been seted up to the outer wall of brake disc, be provided with the chamber of ventilating in the brake disc, wheel hub and brake disc junction integrated into one piece have the rib.

Preferably, the composite brake disc part is composed of two groups of brake discs.

The processing method of the integrated as-cast disk hub comprises the following steps

Step 1: and respectively heating the hub material and the brake disc material by a melting furnace at high temperature to melt the hub material and the brake disc material into liquid.

Step 2: and (4) opening the mold according to the actual model after the hub and the brake disc are integrated, so as to manufacture the mold integrating the wheel and the brake disc.

And step 3: and then pouring the liquid hub material into the wheel and brake disc integrated cavity to enable the hub material to enter the wheel and brake disc integrated cavity to complete preferential casting of the wheel hub, then pouring the liquid brake disc material into the wheel and brake disc integrated cavity, and then simultaneously solidifying and cooling the liquid brake disc material and the wheel hub to further enable the liquid brake disc material and the wheel hub to be cooled and integrated.

And 4, step 4: the hub and the brake disc are integrated to process the outline, the outline of the hub is polished, the brake disc is polished and cleaned, the ventilation cavity is cleaned, the ventilation hole is detected, and the integrated size of the hub and the brake disc is processed.

And 5: and processing the outline of the brake disc by using the friction material and the adhesive.

Preferably, the brake disc material comprises the following components in percentage by weight:

c: 3.3 to 3.9 percent; si: 2.2-3.0%; mn: 0.3-0.75%; p: 0.03-0.1%; s: 0.01 to 0.04 percent; cr: 0.1 to 0.4 percent; mo: 0.1 to 0.5 percent; cu: 0.1 to 0.5 percent; mg: 0.01 to 0.08 percent; sn: 0.01 to 0.04 percent; ti: 0.1 to 0.5 percent; v: 0.01 to 0.08 percent; la: 0.01 to 0.08 percent; ce: 0.01 to 0.04 percent; sb: 0.01 to 0.06 percent; the balance of Fe and inevitable impurities

Compared with the prior art, the invention has the beneficial effects that:

according to the integrated as-cast disc hub and the processing method thereof, the assembled bolts are not used, the processing of a connecting structure is avoided, the structure weight is greatly reduced, the parallelism between the hub and the brake disc is unified through the integrated structure, the prestress generated by the deformation degree of the brake disc is avoided, the maximum contact area between the brake disc and a brake pad is kept, the abrasion degree between the brake disc and the brake pad is reduced, and meanwhile, the brake disc is better in heat dissipation performance, good in shock absorption effect and more stable in structural strength through the material in the material of the brake disc.

Drawings

FIG. 1 is a schematic overall external structural view of an integrated as-cast disk hub and method of making the same according to the present invention;

FIG. 2 is a schematic view of the overall internal structure of the integrated as-cast hub and the method of manufacturing the same according to the present invention.

In the figure: 1. a hub; 2. a brake disc; 3. ribs; 4. a ventilation cavity; 5. a vent hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an integral type as-cast state dish hub, includes

wheel hub

1, 1 right-hand member integrated into one piece of wheel hub has compound brake disc 2, ventilation hole 5 has been seted up to the profile of brake disc 2, be provided with ventilation chamber 4 in the brake disc 2,

wheel hub

1 and 2 junction integrated into one piece of brake disc have rib 3.

The composite brake disc 2 is composed of two sets of brake discs.

The machining method of the integrated as-cast disk hub comprises the following steps of:

step 1: respectively heating a hub manufacturing material and a brake disc manufacturing material at high temperature of a melting furnace, and melting the hub manufacturing material and the brake disc manufacturing material into liquid;

step 2: opening the mold according to the actual model after the wheel and the brake disc are integrated, and manufacturing the mold with the wheel and the brake disc integrated

And step 3: then pouring the liquid hub material into the wheel and brake disc integrated cavity, so that the hub material enters the wheel and brake disc integrated mold to complete the preferential casting of the hub, then pouring the liquid brake disc material into the wheel and brake disc integrated cavity, simultaneously solidifying and cooling the liquid brake disc material and the hub material, and further cooling and fusing the liquid brake disc material and the hub material into a whole;

and 4, step 4: the wheel and brake disc integrated profile machining device has the advantages that the wheel and brake disc integrated profile is machined, the hub profile is polished and cleaned, the brake disc is polished and cleaned, the ventilation cavity is cleaned, the ventilation hole is detected, and the hub and brake disc integrated overall size is machined.

The brake disc comprises the following materials in parts by weight:

c: 3.3 to 3.9 percent; si: 2.2-3.0%; mn: 0.30-0.75%; p: 0.03-0.1%; s: 0.01 to 0.04 percent; cr: 0.1 to 0.4 percent; mo: 0.1 to 0.5 percent; cu: 0.1 to 0.5 percent; mg: 0.01 to 0.08 percent; sn: 0.01 to 0.04 percent; ti: 0.1 to 0.5 percent; v: 0.01 to 0.08 percent; la: 0.01 to 0.08 percent; ce: 0.01 to 0.04 percent; sb: 0.01 to 0.06 percent; the balance of Fe and inevitable impurities.

Detailed description of the preferred embodiment 1

Respectively heating a hub manufacturing material and a brake disc manufacturing material at high temperature through two groups of melting furnaces, and melting the hub manufacturing material and the brake disc manufacturing material into liquid; respectively melting a hub material and a cast iron material of a brake disc into molten iron, wherein the hub is made of high-strength, high-toughness and nodular cast iron, and the brake disc is made of: c: 3.3 to 3.9 percent; si: 2.2-3.0%; mn: 0.3-0.75%; p: 0.03-0.1%; s: 0.01 to 0.04 percent; cr: 0.1 to 0.4 percent; mo: 0.1 to 0.5 percent; cu: 0.1 to 0.5 percent; mg: 0.01 to 0.08 percent; sn: 0.01 to 0.04 percent; ti: 0.1 to 0.5 percent; v: 0.01 to 0.08 percent; la: 0.01 to 0.08 percent; ce: 0.01 to 0.04 percent; sb: 0.01 to 0.06 percent; the balance of Fe and inevitable impurities; opening the mold according to the actual model after the hub and the brake disc are integrated to manufacture a mold integrating the wheel and the brake disc; the mold adopts a shell-mold shell-core process, a chilling block is placed at a hot spot of the mold, and the chilling block is used for improving the solidification speed of the contact part of the hub and the brake disc, refining crystal grains, improving the mechanical property of the part and realizing high-strength connection of the two parts; pouring a liquid hub material into the wheel and brake disc integrated cavity, so that the hub material enters the wheel and brake disc integrated cavity to complete preferential casting of the wheel hub, and then pouring the liquid brake disc material into the wheel and brake disc integrated cavity, so that the liquid brake disc material and the wheel hub are simultaneously solidified and cooled, and the liquid hub material and the brake disc material are combined into a whole; the wheel and the brake disc are integrated to clean and polish the outline, the outline of the hub is polished and cleaned, the brake disc is polished and cleaned, the ventilation cavity is cleaned, the ventilation hole is detected, and meanwhile the integrated overall size of the hub and the brake disc is processed; and processing the outline of the brake disc by using the friction material and the adhesive.

The wheel hub and the brake disc with the same size are selected, the original bolt fixing mode and the integrally formed casting mode are respectively adopted for processing, and the two assembled wheel hubs are weighed

● weight	●1	●2	●2	●4	●5
						● bolt type	●62037g	●62023g	●61997g	●61993g	●62006g
● integration	●51015g	●51007g	●51020g	●50994g	●51004g

The total weight loss reaches about 20 percent

Detailed description of the preferred embodiment 1

Respectively heating a hub manufacturing material and a brake disc manufacturing material at high temperature through two groups of melting furnaces, and melting the hub manufacturing material and the brake disc manufacturing material into liquid; respectively melting a hub material and a cast iron material of a brake disc into molten iron, wherein the hub is made of high-strength and high-toughness nodular cast iron, and the brake disc is made of: c: 3.3 to 3.9 percent; si: 2.2-3.0%; mn: 0.3-0.75%; p: 0.03-0.1%; s: 0.01 to 0.04 percent; cr: 0.1 to 0.4 percent; mo: 0.1 to 0.5 percent; cu: 0.1 to 0.5 percent; mg: 0.01 to 0.08 percent; sn: 0.01 to 0.04 percent; ti: 0.1 to 0.5 percent; v: 0.01 to 0.08 percent; la: 0.01 to 0.08 percent; ce: 0.01 to 0.04 percent; sb: 0.01 to 0.06 percent; the balance of Fe and inevitable impurities; opening the mold according to the actual model after the hub and the brake disc are integrated to manufacture a mold integrating the wheel and the brake disc; the mold adopts a shell-mold shell-core process, a chilling block is placed at a hot spot of the mold, and the chilling block is used for improving the solidification speed of the contact part of the hub and the brake disc, refining crystal grains, improving the mechanical property of the part and realizing high-strength connection of the two parts; pouring a liquid hub material into the wheel and brake disc integrated cavity, so that the hub material enters the wheel and brake disc integrated cavity to complete preferential casting of the wheel hub, and then pouring the liquid brake disc material into the wheel and brake disc integrated cavity, so that the liquid brake disc material and the wheel hub are simultaneously solidified and cooled, and the liquid hub material and the brake disc material are combined into a whole; the wheel and the brake disc are integrated to clean and polish the outline, the outline of the hub is polished and cleaned, the brake disc is polished and cleaned, the ventilation cavity is cleaned, the ventilation hole is detected, and meanwhile the integrated overall size of the hub and the brake disc is processed; and processing the outline of the brake disc by using the friction material and the adhesive.

Selecting three formulas

The first formula is as follows:

C：3.3-3.9％；Si：1.9％；Mn：0.2％；P：0.03％；S：0.01％；Cr：0.1％；Mo：0.1％；Cu：0.1％；Mg：0.01％；Sn：0.01％；Ti：0.1％；V：0.01％；La：0.02％；Ce：0.01％；Sb：0.01％；

the second formula is as follows:

C：3.6％；Si：2.3％；Mn：0.4％；P：0.06％；S：0.05％；Cr：0.25％；Mo：0.25％；Cu：0.25％；Mg：0.04％；Sn：0.04％；Ti：0.25％；V：0.04％；La：0.04％；Ce：0.02％；Sb：0.03％；

the third formula is as follows:

C：3.9％；Si：2.6％；Mn：0.6％；P：0.1％；S：0.1％；Cr：0.4％；Mo：0.5％；Cu：0.5％；Mg：0.08％；Sn：0.04％；Ti：0.5％；V：0.08％；La：0.08％；Ce：0.04％；Sb：0.06％。

selecting two groups of common bolt type hubs and brake discs, wherein one group of the three groups of formulas respectively corresponds to a first group, a second group and a third group, and performing a 4W kilometer wear test as follows:

● wear	● general 1	● general 1	● first	● second	● third
						● common	●2.58mm	●2.45mm	●	●	●
● integration	●	●	●0.54mm	●0.50mm	●0.62mm

Selecting two groups of common bolt type hubs and brake discs, selecting one group from three groups of formulas, respectively corresponding to a first group, a second group and a third group, and performing a 10W kilometer wear test as follows:

● wear	● general 1	● general 1	● first	● second	● third step
						● common	●5.64mm	●5.59mm	●	●	●
● integration	●	●	●1.50mm	●1.56mm	●1.59mm

Two groups of 10W kilometers of abrasion are checked, and the thermal cracking condition of the two groups of abrasion is checked;

a common brake disc;

common 1 and common 2 see-through cracks, with safety risks that require replacement.

Integrally formed brake disc

The first, second and third outer portions have hidden lines, and the use is not influenced.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An integral as-cast disk hub, comprising a wheel hub (1), characterized in that: wheel hub (1) right-hand member integrated into one piece has compound brake disc (2), ventilation hole (5) have been seted up to the outer wall of brake disc (2), be provided with ventilation chamber (4) in brake disc (2), wheel hub (1) and brake disc (2) junction integrated into one piece have rib (3).

2. A one-piece as-cast disk hub as defined in claim 1 wherein: the composite brake disc (2) is composed of two groups of brake discs.

3. A method of manufacturing an integral as-cast disk hub as claimed in any one of claims 1 to 2, wherein: the method comprises the following steps:

step 2: opening the mold according to the actual model after the hub and the brake disc are integrated, and manufacturing the mold with the hub and the brake disc integrated

And step 3: then pouring the liquid hub material into the hub and brake disc integrated cavity to enable the hub material to enter the hub and brake disc integrated cavity to complete preferential casting of the hub, then pouring the liquid brake disc material into the hub and brake disc integrated cavity, simultaneously solidifying and cooling the liquid brake disc material and the hub, and further cooling and fusing the liquid brake disc material and the hub into a whole;

and 4, step 4: the hub and the brake disc are integrated to process the outline, the outline of the hub is polished and cleaned, the brake disc is polished and cleaned, the ventilation cavity is cleaned, the ventilation hole is detected, and the integrated size of the hub and the brake disc is processed.

4. The method for integrally machining the integrated as-cast disk hub according to claim 3, wherein the method comprises the following steps: the brake disc comprises the following materials in percentage by weight: