WO2018107638A1

WO2018107638A1 - Spinning and bending die assembly for h-shaped housing of silicone fluid damper

Info

Publication number: WO2018107638A1
Application number: PCT/CN2017/081603
Authority: WO
Inventors: 张建新; 金小波; 潘益芳; 周敏; 纪国群
Original assignee: 南通福乐达汽车配件有限公司
Priority date: 2016-12-12
Filing date: 2017-04-24
Publication date: 2018-06-21
Also published as: CN206509381U

Abstract

A spinning and bending die assembly for an H-shaped housing of a silicone fluid damper. The die assembly comprises an upper die (1), a lower die (2), a first spinning roller tool (3), and a second spinning roller tool (4) mounted on a spinning machine. The upper and lower dies are mounted on a rotating shaft of the spinning machine. A circular blank (5) for manufacturing an H-shaped housing of a silicone fluid damper is placed on the lower die, and pressed by means of the upper die. The first and second spinning roller tools are mounted on roller tool frames of the spinning machine, and are symmetrically arranged on two sides of the upper and lower dies. Axes of the first and second spinning roller tools form a 45-degree included angle with a central line of the upper and lower dies. By symmetrically arranging the two spinning roller tools on the two sides of the dies, the present invention enables uniform force application on two sides during spinning operation, thus improving stability, preventing metal workpiece instability caused by uneven loading, and improving quality of a workpiece.

Description

I-shaped silicone oil shock absorber shell spinning and bending mold set

Technical field

The utility model relates to a processing component of an I-shaped silicone oil shock absorber shell, in particular to a spinning and bending mold set of an I-shaped silicone oil shock absorber shell.

Background technique

In order to reduce the torsional vibration of the crankshaft, improve the fatigue life of the crankshaft, and reduce the vibration and noise of the entire vehicle, modern vehicles will install the crankshaft torsional vibration damper at the front end of the crankshaft with the largest torsional vibration amplitude of the engine. According to the different ways of reducing the torsional vibration, it can be divided into three types: power type, damping type and composite type, and the crankshaft silicone oil shock absorber is a kind of damping shock absorber. This silicone oil damper requires a good seal and a large inertial body to ensure reliable operation and good application requirements. It is suitable for large and medium-sized marine engines and automobiles (heavy vehicles, light vehicles, racing cars, construction machinery vehicles, etc.) On the engine.

The spoke portion of the conventional silicone oil damper housing is located at the bottom plate position, resulting in a relatively simple installation method, and the spokes of the housing after the fixed installation are not movable. For this case, an I-shaped silicone oil damper housing has been developed. The spoke portion of the housing can change the position of the spokes of the housing by adjusting the size of the mold during forming, so that the cooperation of the engine is more compact, and the cooperation with the engine satisfies the requirements of flexible design. However, due to the particularity of the I-shaped shell structure, its processing has always been a difficult problem. The most common practice is the method of integral casting, forging machining and tailor welding. However, the overall casting is prone to shrinkage, shrinkage, etc., its mechanical properties can not be guaranteed, the sealing is also difficult to meet the requirements; forging machine processing has low material utilization, machining allowance is large, metal flow lines are cut, parts of Defects such as low corrosion resistance. Due to the uneven distribution of chemical composition in the weld zone during tailor welding, the distribution of mechanical properties is not uniform, the dynamic balance of the product is poor, and its life and dynamic characteristics are greatly affected, which is prone to various quality problems.

The problem of forming the spoke position in the I-type silicone oil damper housing is formed by a downward bending process during processing, but the process requires a matching mold and a spinning wheel for assembly and cooperation, and there is no suitable market available on the market. The mold and the spinning wheel are processed.

Utility model content

The utility model aims to overcome the defects of the prior art, and provides a spinning and bending mold set of an I-shaped silicone oil shock absorber shell, which realizes the clamping of the circular sheet material through the upper and lower molds, and passes through two spinning wheels. Symmetrical spin bending process operation.

In order to achieve the above object, the utility model proposes the following technical solutions:

The utility model relates to a spinning type bending and bending mold set of an I-shaped silicone oil shock absorber shell, comprising an upper mold, a lower mold, a first spinning wheel and a second spinning wheel mounted on the spinning machine, wherein the upper and lower molds are installed in the rotation On the rotating shaft of the press, a circular plate for preparing a crankshaft silicone oil damper housing is placed on the lower mold and pressed by an upper mold, and the first spinning wheel and the second spinning wheel are mounted on the spinning The roller frame of the machine is symmetrically located on both sides of the upper and lower molds, and the wheel axes of the first spinning wheel and the second spinning wheel are at an angle of 45° with the central axis of the upper and lower molds.

Preferably, the lower end surface of the upper mold is provided with a semicircular rib spaced apart by 8 to 12 mm, and the radius of the rib is 0.3 mm.

Preferably, the upper surface of the lower mold has a convex step surface, and the step surface specifically has a convex limit, and the circular sheet is placed on the lower mold to be positioned by the protrusion limit.

Preferably, the wheel sides of the first spinning wheel and the second spinning wheel are 90°, and a circular arc with a radius of 8-10 mm is formed to form a rounded corner, and the upper end surface and the lower mold of the rotating wheel angle are The central axes are parallel and the lower end faces are parallel to the upper surface of the circular sheet.

Compared with the prior art, the present invention discloses a type of silicone oil damper housing spinning and bending mold set, which has the following beneficial effects: two spinning wheels are symmetrically arranged on both sides of the mold, so that the rotation Pressure operation Uniform force on both sides, so that the stability is improved, metal distortion caused by partial loading is avoided, and the quality of the workpiece is improved;

The rounding radius of the spinning wheel is 8~10mm, which can better film and control the thinning during bending. At the same time, the upper end surface is parallel with the central axis of the mold during bending, which can ensure the shaping of the boss on the sheet and prevent it. The boss collapses;

The ribs are provided on the lower surface of the upper mold to increase the friction between the circular sheet and the circular sheet to prevent relative sliding when rotating.

DRAWINGS

1 is a schematic view of the assembly of the mold of the spinning and bending process of the present invention.

detailed description

The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

As shown in FIG. 1 , the utility model discloses a spinning type bending and bending mold set of an I-shaped silicone oil shock absorber shell, which is installed on a spinning machine to realize processing of a circular sheet material to form a crankshaft silicone oil shock absorber. An inner cylinder of the casing, the structure comprising an upper mold 1, a lower mold 2, a first spinning wheel 3 and a second spinning wheel 4, wherein the upper mold 1 and the lower mold 2 are mounted on a rotating shaft of the spinning machine, The circular plate 5 with the boss is placed on the lower mold 2, and the upper and lower molds 1 are used for the positioning and pressing. The first spinning wheel 3 and the second spinning wheel 4 are symmetrically disposed on both sides of the upper and lower molds. And the axes of the two spinning wheels are at an angle of 45° with the central axis of the upper and lower molds.

Specifically, the upper surface of the lower mold 2 has a convex step surface 6 having a convex limit 7 at the center of the upper surface of the step surface 6 , and a circular sheet with a boss is placed on the limit 7 . The boss is in a suspended state with its peripheral sheet, and the height of the stepped surface 6 determines the bending depth.

The lower end surface of the upper mold 1 has a groove 10 matched with the protrusion 6, and the lower end surface of the periphery of the groove 10 is provided with a semicircular rib 11 spaced apart by 8 to 12 mm, and the radius of the semicircular rib 11 is 0.3. Mm, rib The arrangement can increase the friction with the surface of the circular sheet when the circular sheet is pressed down to prevent relative sliding when rotating.

The first spinning wheel 3 and the second spinning wheel 4 are mounted on the roller frame of the spinning machine, symmetrically disposed on both sides of the upper and lower molds, and the wheel axis is at an angle of 45° with the central axis of the upper and lower molds.

The wheel side of the first spinning wheel 3 is 90°, and the corner radius of the wheel angle 12 is 8-10 mm, because the wheel axis of the first spinning wheel is at an angle of 45° to the central axis of the lower die 2. Therefore, the upper end surface 8 of the rotating wheel angle 12 is parallel to the central axis of the upper and lower molds, and the lower end surface 9 is parallel to the surface of the circular sheet. When the pressing operation is performed, the lower end surface is pressed downward by the lower end surface to be axially pressed. During the bending operation, the vertical cylinder pressure is applied to the sheet by the rotating wheel while the radial feeding is performed, so that the step surface of the lower mold is formed into an L-shaped bending, and the larger turning angle makes the feeding smoother. At the same time, the rounded transition zone of the sheet can better film and control thinning.

The structure of the second spinning wheel 4 is identical to the structure of the first spinning wheel 3, so that it will not be described too much.

The working process of the spinning and bending mold set of the utility model is that the spinning rollers on both sides are adjusted to the edge position of the circular sheet, the spinning machine is started, the upper and lower molds are closed, the upper and lower molds are controlled to rotate, and the rotating wheel is formed during the forming process. Passive rotation, the two spinning wheels are pressed down along the axial direction, so that the outer edge of the circular sheet is bent downward to the upper surface of the lower mold; then the first spinning wheel is controlled to be not fed. Pressing on the outer surface of the circular sheet material, pressing the circular sheet material, the second spinning wheel has a vertical cylinder pressure on the sheet material while making radial feed, so that the circular sheet material is bent to form an L-shaped bend. .

The technical content and the technical features of the present invention have been disclosed as above. However, those skilled in the art can still make various substitutions and modifications without departing from the spirit of the present invention based on the teachings and disclosures of the present invention. Therefore, the present invention protects the present invention. The scope of the invention is not limited by the scope of the invention, and the invention is intended to cover various alternatives and modifications without departing from the invention.

Claims

The utility model relates to a spinning type bending and bending die set of an I-shaped silicone oil shock absorber shell, which is characterized in that the utility model comprises: an upper mold mounted on a spinning machine, a lower mold, a first spinning wheel and a second spinning wheel, wherein the upper and lower sides The mold is mounted on the rotating shaft of the spinning machine, and a circular sheet of the I-shaped silicone oil damper housing is placed on the lower mold and pressed by the upper mold, the first spinning wheel and the second spinning The pressure roller is mounted on the roller frame of the spinning machine, and is symmetrically located on both sides of the upper and lower molds, and the wheel axis of the first spinning wheel and the second spinning wheel is at an angle of 45° with the central axis of the upper and lower molds.
The I-type silicone oil damper housing spinning and bending die set according to claim 1, wherein the lower end surface of the upper mold is provided with semicircular ribs spaced apart by 8 to 12 mm, and the convex The radius of the rib is 0.3 mm.
The I-type silicone oil damper housing spinning and bending die set according to claim 1, wherein the upper surface of the lower mold has a convex step surface, and the step surface has a convex surface. The limit position, the circular sheet placed on the lower mold is positioned by the raised limit.
The I-type silicone oil damper housing spinning and bending die set according to claim 1, wherein the first spinning wheel and the second spinning wheel have a wheel edge of 90°, A circular arc having a radius of 8 to 10 mm is formed to form a rounded corner, the upper end surface of the rotating wheel angle is parallel to the central axis of the lower mold, and the lower end surface is parallel to the upper surface of the circular sheet.