阅读说明：本技术 一种卷边端细长型大圆盘减重孔法兰及其加工方法 (Large disc lightening hole flange with long and thin curled end and machining method thereof ) 是由 夏建祥 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种卷边端细长型大圆盘减重孔法兰及其加工方法,包括：法兰盘,所述法兰盘的前端面开设有凹槽,所述凹槽的外形结构为“花瓣形”结构,所述凹槽的内侧设置有凹型盲孔,所述凹槽的相邻“花瓣叶”之间开设有圆孔,所述法兰盘的后端设置有细长端,且所述细长端与所述法兰盘一体成型,所述细长端的尾端内部开设有锥型盲孔。本发明设计特点主要在于通过开圆孔,开凹槽,以及开凹型盲孔,来达到减重的的目的,尤其开设的凹槽不仅可以达到减重目的,而且由于此处有凹槽,可以使得后续装配时两面贴合更紧密,多处开孔开槽设计大大降低了整个法兰的重量,符合现有的轻量化的发展理念,适合于推广使用,便于量化生产。(The invention discloses a large disc lightening hole flange with a long and thin curled end and a processing method thereof, wherein the large disc lightening hole flange comprises the following steps: the flange plate, the preceding terminal surface of flange plate has seted up the recess, the appearance structure of recess is "petal shape" structure, the inboard of recess is provided with concave type blind hole, the round hole has been seted up between adjacent "petal leaf" of recess, the rear end of flange plate is provided with the slender end, just the slender end with flange plate integrated into one piece, the taper type blind hole has been seted up to the tail end inside of slender end. The design of the invention is characterized in that the purpose of reducing weight is achieved by opening the round hole, the groove and the concave blind hole, particularly, the purpose of reducing weight can be achieved by the arranged groove, the two surfaces can be tightly attached during subsequent assembly due to the groove, the weight of the whole flange is greatly reduced by the design of opening the groove at multiple positions, the invention conforms to the existing lightweight development concept, and the invention is suitable for popularization and use and is convenient for quantitative production.)

1. The utility model provides a big disc lightening hole flange of slender type of turn-up end which characterized in that includes:

ring flange (1), the preceding terminal surface of ring flange (1) is seted up flutedly (2), the appearance structure of recess (2) is "petal shape" structure, the inboard of recess (2) is provided with concave type blind hole (3), round hole (4) have been seted up between adjacent "petal leaf" of recess (2), the rear end of ring flange (1) is provided with slender end (5), just slender end (5) with ring flange (1) integrated into one piece, tapered blind hole (6) have been seted up to the tail end inside of slender end (5).

2. A turned-edge end elongated large disc lightening hole flange according to claim 1, characterized in that the number of said round holes (4) is set to 5 and said round holes (4) penetrate said flange plate (1).

3. A beaded end elongated large disc lightening flange according to claim 1 characterized in that the ratio of the maximum outer diameter of the flange plate (1) to the minimum outer diameter of the elongated end (5) is 5: 1.

4. a processing method of a flange with a curled end and a slender large disc lightening hole is characterized by comprising the following steps:

s1, designing a forged piece: the original groove (2), the original round hole (4) and the original conical blind hole (6) are sealed by adding allowance, and the original concave blind hole (3) is sealed by adding no allowance;

s2, designing a die: the die consists of 4 sets of dies, namely an upsetting die, a pre-forging die, a precision forging die and a trimming die, and the design sequence is that the precision forging die is designed firstly, the pre-forging die is designed secondly, the upsetting die is designed secondly and the trimming die is designed finally;

s3, sawing a bar stock: cutting the blank from the round bar steel by a circular sawing machine, wherein the cut blank is in a round cake shape;

s4, heating: heating the blank obtained in the step S3 in an intermediate frequency induction heating electric furnace;

s5, upsetting: placing the blank obtained in the step S4 in an upsetting die, and then forging and pressing the blank by using a hot die forging press to form an upset material;

s6, preforging: placing the upset material obtained in the step S5 in a preforging die, and then forging and pressing the upset material by using a hot die forging press to form a preforging material;

s7, precision forging: placing the pre-forging material obtained in the step S6 in a precision forging die, and then forging and pressing the pre-forging material by using a hot die forging press to form a precision forging material;

s8, trimming: placing the precision forging material obtained in the step S7 in a trimming die, then stamping by using a punch press, and cutting off redundant leftover materials to form a forging piece;

s9, residual temperature normalizing: placing the forged piece obtained in the step S8 on a speed-adjustable conveying belt, and driving the forged piece to pass through a variable frequency fan through the conveying belt to cool;

s10, machining: through thick finish turning ring flange (1) end of lathe, form recess (2), concave type blind hole (3) of finish turning simultaneously, secondly through the thick finish turning external diameter of lathe, form slender end (5), then bore the blind hole through the drilling machine, bore the cone angle again, finish turning blind hole and cone angle form tapered blind hole (6), again bore round hole (4) through the drilling machine to car chamfer to whole flange surface.

5. The method of claim 4, wherein in step S2, the precision forging die and the preforging die are designed to be positioned by the flash, the flash groove of the lower die of the precision forging die is designed with a large dog-ear, and the flash groove of the lower die of the preforging die is designed with a small dog-ear while the design of the cavity of the upsetting die is pointed.

6. A turned-end elongated large disc lightening flange and method according to claim 4 wherein in step S7, the pre-forging is raised and placed in the finish forging die to make the pre-forging have enough forming length to fill the elongated end (5).

Technical Field

The invention relates to the technical field of automobile parts, in particular to a flange with a long and thin large disc lightening hole at a curled edge end and a processing method thereof.

Background

The automobile parts processing is each unit constituting the automobile parts processing entirety and a product serving for the automobile parts processing. The lightweight of the automobile is to reduce the preparation quality of the automobile as much as possible on the premise of ensuring the strength and the safety performance of the automobile, thereby improving the dynamic property of the automobile, reducing the fuel consumption and reducing the exhaust pollution. Experiments prove that the mass of the automobile is reduced by half, and the fuel consumption is also reduced by nearly half. The light weight of automobiles has become a trend of the development of automobiles in the world due to the need for environmental protection and energy conservation. The light weight is one of important technical paths for saving energy, reducing consumption and increasing the endurance mileage of the automobile.

The automobile part flange on the market at present is heavy in whole volume, and is not accordant with the existing lightweight development theory, and the existing automobile part flange has the problem that the weight reduction treatment is not convenient to carry out in the production process, and for this reason, we provide a curling end slender type large disc lightening hole flange with higher practicability and a processing method thereof.

Disclosure of Invention

The invention aims to provide a large disc lightening hole flange with a slender curled end and a processing method thereof, and solves the problems that the automobile part flange on the market at present is heavy in overall size and does not accord with the existing lightweight development concept, and the existing automobile part flange is inconvenient to lighten in the production process.

In order to achieve the purpose, the invention provides the following technical scheme: a large disc lightening hole flange with a long and thin curled end comprises:

the flange plate, the preceding terminal surface of flange plate has seted up the recess, the appearance structure of recess is "petal shape" structure, the inboard of recess is provided with concave type blind hole, the round hole has been seted up between adjacent "petal leaf" of recess, the rear end of flange plate is provided with the slender end, just the slender end with flange plate integrated into one piece, the taper type blind hole has been seted up to the tail end inside of slender end.

Preferably, the number of the round holes is 5, and the round holes penetrate through the flange plate.

Preferably, the ratio of the maximum outer diameter of the flange to the minimum outer diameter of the elongate end is 5: 1.

a processing method of a flange with a curled end and a slender large disc lightening hole comprises the following steps:

s1, designing a forged piece: the original concave blind hole is sealed by adding allowance to the original groove, the original round hole and the original conical blind hole, and no allowance is added to the original concave blind hole;

s2, designing a die: the die consists of 4 sets of dies, namely an upsetting die, a pre-forging die, a precision forging die and a trimming die, and the design sequence is that the precision forging die is designed firstly, the pre-forging die is designed secondly, the upsetting die is designed secondly and the trimming die is designed finally;

s3, sawing a bar stock: cutting the blank from the round bar steel by a circular sawing machine, wherein the cut blank is in a round cake shape;

s4, heating: heating the blank obtained in the step S3 in an intermediate frequency induction heating electric furnace;

s5, upsetting: placing the blank obtained in the step S4 in an upsetting die, and then forging and pressing the blank by using a hot die forging press to form an upset material;

s6, preforging: placing the upset material obtained in the step S5 in a preforging die, and then forging and pressing the upset material by using a hot die forging press to form a preforging material;

s7, precision forging: placing the pre-forging material obtained in the step S6 in a precision forging die, and then forging and pressing the pre-forging material by using a hot die forging press to form a precision forging material;

s8, trimming: placing the precision forging material obtained in the step S7 in a trimming die, then stamping by using a punch press, and cutting off redundant leftover materials to form a forging piece;

s9, residual temperature normalizing: placing the forged piece obtained in the step S8 on a speed-adjustable conveying belt, and driving the forged piece to pass through a variable frequency fan through the conveying belt to cool;

s10, machining: through the thick finish turning flange dish end of lathe, form the recess, concave type blind hole of finish turning simultaneously, secondly through the thick finish turning external diameter of lathe, form the slender end, then bore the blind hole through the drilling machine, bore the cone angle again, finish turning blind hole and cone angle form tapered blind hole, bore the round hole through the drilling machine again to whole flange surface car chamfer.

Preferably, in step S2, the precision forging die and the preforging die are designed to be positioned by the flash, the flash groove of the lower die of the precision forging die is designed with a large bevel, the flash groove of the lower die of the preforging die is designed with a small bevel, and the cavity of the upsetting die is designed to be pointed.

Preferably, in step S7, the pre-forging is lifted into the finish forging die so that the pre-forging has a sufficient forming length to fill the elongated end.

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

the design of the invention is characterized in that the positions of common products are not provided with holes, grooves are formed, the positions of the common products are completely straight and not grooved, concave blind holes are formed, the positions of the common products are completely straight and solid, and the purpose of reducing weight is achieved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a right side view cross-sectional structure of the present invention;

FIG. 3 is a schematic structural view of a forging of the present invention;

FIG. 4 is a schematic view of an upset die configuration of the present invention;

FIG. 5 is a schematic diagram of a blocker of the present invention;

FIG. 6 is a schematic view of a precision forging die of the present invention;

FIG. 7 is a schematic view of the structure of the trimming die of the present invention;

FIG. 8 is a schematic view of groove machining according to the present invention;

FIG. 9 is a schematic view of the mechanical drilling of tapered blind holes according to the present invention;

FIG. 10 is a schematic view of the machining of a circular hole according to the present invention.

In the figure: 1. a flange plate; 2. a groove; 3. a concave blind hole; 4. a circular hole; 5. an elongated end; 6. a tapered blind 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.

Referring to fig. 1-2, a flange with a large disc with a thin and long curled end and a method for processing the same includes:

ring flange 1, recess 2 has been seted up to ring flange 1's preceding terminal surface, recess 2's appearance structure is "petal shape" structure, recess 2's inboard is provided with concave type blind hole 3, round hole 4 has been seted up between recess 2's adjacent "petal leaf", the quantity of round hole 4 sets up to 5, just round hole 4 runs through ring flange 1, ring flange 1's rear end is provided with slender end 5, just slender end 5 with ring flange 1 integrated into one piece, tapered blind hole 6 has been seted up to slender end 5's tail end inside, ring flange 1's maximum external diameter with the ratio of the minimum external diameter of slender end 5 is 5: 1, designing large circular arc transition, being beneficial to forging and forming and reducing folding risks.

Referring to fig. 3-10, a method for processing a large disc lightening hole flange with a long and thin curled end comprises the following steps:

s1, designing a forged piece: the original concave blind hole 3 is not provided with the allowance, and the subsequent concave blind hole 3 is not machined, so that certain cost can be reduced;

s2, designing a die: the die is composed of 4 sets of dies, namely an upsetting die, a pre-forging die, a precision forging die and a trimming die, the design sequence is that the precision forging die is designed firstly, then the pre-forging die is designed, then the upsetting die is designed, and finally the trimming die is designed, in the step S2, the precision forging die and the pre-forging die are designed to be positioned by flanges, as the boss is positioned to lose effect, a large break angle is designed on a lower die flash groove of the precision forging die, a small break angle is designed on the lower die flash groove of the pre-forging die, the product is limited to shake by the break angle, meanwhile, a cavity of the upsetting die is designed to be pointed, and when the pre-forging is formed, the pointed position is favorable for filling the thin long end 5;

s3, sawing a bar stock: cutting the blank from the round bar steel by a circular sawing machine, wherein the cut blank is in a round cake shape;

s4, heating: heating the blank obtained in the step S3 in an intermediate frequency induction heating electric furnace;

s5, upsetting: placing the blank obtained in the step S4 in an upsetting die, and then forging and pressing the blank by using a hot die forging press to form an upset material;

s6, preforging: placing the upset material obtained in the step S5 in a preforging die, and then forging and pressing the upset material by using a hot die forging press to form a preforging material;

s7, precision forging: placing the pre-forging material obtained in the step S6 in a precision forging die, and then forging and pressing the pre-forging material by using a hot die forging press to form the precision forging material, wherein the slender end 5 of the product is slender and has high forging forming difficulty, and the pre-forging piece needs to be lifted and placed in a precision forging lower die so as to ensure that the slender end 5 is filled with enough forming length of the pre-forging piece;

s8, trimming: placing the precision forging material obtained in the step S7 in a trimming die, then stamping by using a punch press, and cutting off redundant leftover materials to form a forging piece;

s9, residual temperature normalizing: placing the forged piece obtained in the step S8 on a speed-adjustable conveying belt, and driving the forged piece to pass through a variable frequency fan through the conveying belt to cool;

s10, machining: through the thick finish turning ring flange 1 end of lathe, form recess 2, concave blind hole 3 of finish turning simultaneously, secondly through the thick finish turning external diameter of lathe, form slender end 5, then bore the blind hole through the drilling machine, bore the cone angle again, finish turning blind hole and cone angle form tapered blind hole 6, finish turning tapered blind hole 6 simultaneously again bores round hole 4 through the drilling machine to turning the chamfer to whole flange surface.

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.