WO2018107639A1 - Shovel spinning-based thickening die assembly for housing of silicone fluid crankshaft damper - Google Patents

Abstract

A shovel spinning-based thickening die assembly for a housing of a silicone fluid crankshaft damper. The die assembly comprises an upper die (1), a lower die (2), a first shovel spinning roller tool (3), and a second shovel 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 (6) for manufacturing a housing of a silicone fluid crankshaft damper is placed on the lower die, and pressed by means of the upper die. The first and second shovel 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 shovel spinning roller tools form a 45-degree included angle with a central line of the upper and lower dies. By symmetrically arranging the two shovel spinning roller tools on the two sides of the dies, the present invention enables uniform force application on two sides during shovel spinning operation, thus improving stability, preventing metal workpiece instability caused by uneven loading, and improving quality of the workpiece.

Description

Crankshaft silicone oil shock absorber shell shovel thickening die set Technical field

The utility model relates to a machining component of a crankshaft silicone oil damper housing, in particular to a crankshaft silicone oil damper housing shovel thickening die set.

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 use requirements.

A double-cylinder crankshaft silicone oil damper with a flange, the conventional processing method is generally a method of integral casting, forging machining and tailor welding. The whole casting is easy to produce shrinkage holes, shrinkage, etc., its mechanical properties can not be guaranteed, and the sealing property is also difficult to meet the requirements; forging machine processing has low material utilization rate, large machining allowance, metal flow lines are cut, and parts are resistant. Defects such as low corrosion performance. 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.

In view of the problem of welding defects, it is considered to use the shovel thickening step instead of the welding step. However, the shovel thickening requires the matching mold and the shovel wheel to be assembled and matched. There is no suitable mold and shovel on the market for processing operations. .

Utility model content

The utility model aims to overcome the defects of the prior art, and provides a crankshaft silicone oil damper housing shovel thickening mold set, which realizes the clamping of the circular sheet material through the upper and lower molds, and is symmetrically carried out by the two shovel wheels. Shovel to achieve the shovel thickening process.

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

A crankshaft silicone oil shock absorber shell shovel thickening mold set, comprising an upper mold, a lower mold, a first shovel wheel and a second shovel wheel mounted on a spinning machine, wherein the upper and lower molds are mounted on the spinning machine On the rotating shaft, a circular sheet for preparing a crankshaft silicone oil damper housing is placed on the lower mold and pressed by an upper mold, and the first shovel wheel and the second shovel wheel are mounted on the spinning machine. The roller frame is symmetrically located on both sides of the upper and lower molds, and the wheel axes of the first shovel wheel and the second shovel wheel are at an angle of 45° with the central axis of the upper and lower dies.

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 arc radius of the shovel angle of the first shovel wheel is 3 mm, the exit angle of the shovel wheel is 10°, and the upper end surface of the shovel angle is a material accumulation surface, and the stacking surface and the upper and lower dies The central axis is parallel, and its characteristic size is greater than 30 mm. The edge of the deposition surface is provided with a slope stop surface, and the oblique surface and the accumulation surface adopt a circular arc transition of R=2 to 4 mm.

Preferably, the arc radius of the shovel angle of the second shovel wheel is 5 mm, the exit angle of the shovel wheel is 10°, and the upper end surface of the shovel angle is a material accumulation surface, and the stacking surface and the upper and lower dies The central axis is parallel, and its characteristic size is greater than 30 mm. The edge of the deposition surface is provided with a slope stop surface, and the oblique surface and the accumulation surface adopt a circular arc transition of R=2 to 4 mm.

Preferably, the inclined surface is at an angle of 45° to the stacked surface.

Compared with the prior art, the utility model discloses a crankshaft silicone oil damper housing shovel thickening die set, which has the following beneficial effects: two shovel wheels are symmetrically arranged on both sides of the die, so that the shovel operation When the two sides are evenly stressed, the stability is improved, the metal disorder caused by partial loading is avoided, and the quality of the workpiece is improved;

The two shovel wheels use shovel angles with different arc radii. The vortex wheel with small radius shovel angle facilitates the cutting of the shovel angle. The large radius shovel angle of the slewing wheel acts as a restraint and even force, and the actual shovel Angle size and shovel According to the thickness of the screw, the thickness of the shovel can be selected within a certain range, such as 1.5 to 4 mm, according to the actual production needs. The flow of the material is restricted by the stacking surface and the upper slanting block, and the inner cylinder of the crankshaft silicone oil damper is realized. Precise shaping

The ribs are arranged on the lower surface of the upper mold to increase the friction between the ribs and the circular sheet to prevent relative sliding phenomenon during rotation;

The two shovel wheels are arranged at a 45° inclination so that the stacking surface is perpendicular to the circular sheet, thereby ensuring the verticality and the uniformity of the upper and lower thickness of the inner side wall of the crankshaft silicone oil damper housing.

DRAWINGS

Fig. 1 is a schematic view showing the assembly of a mold for the shovel thickening 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 crankshaft silicone oil shock absorber shell shovel thickening mold set, which is installed on a spinning machine to realize processing of a circular sheet material to form a crankshaft silicone oil shock absorber shell. The inner cylinder comprises a top mold 1, a lower mold 2, a first shovel 3 and a second shovel 4, wherein the upper mold 1 and the lower mold 2 are mounted on a rotating shaft of the spinning machine, and the lower mold 2 The protrusion 5 in the middle realizes the positioning of the circular sheet 6 when feeding, the upper mold 1 is located above the circular sheet 6 to realize the positioning and positioning of the circular sheet 6 , and the lower surface of the upper mold 1 has a gap 8 ～12mm semicircular ribs 7, and the semicircular ribs 7 have a radius of 0.3mm. The ribs are arranged to increase the friction with the circular sheet surface when the circular sheet is pressed down, and prevent relative sliding during rotation. . The first shovel wheel 3 and the fourth shovel wheel 4 are mounted on the roller frame of the spinning machine, and are symmetrically disposed on both sides of the upper and lower dies. During the forming, the two sides of the plate are evenly stressed, so as to avoid the sheet material being unilaterally Uneven force caused by force, so as to avoid sheet metal shake caused by metal flow disorder, and the wheel axis of the first shovel 3 and the second shovel 4 is at an angle of 45° to the central axis of the upper and lower dies. .

Specifically, the arc radius of the shovel angle 10 of the first shovel wheel 3 is 3 mm, the exit angle 8 of the shovel wheel is 10°, and the upper end surface of the shovel angle is a material accumulation surface 9, due to the A shovel wheel and the upper and lower dies are at an angle of 45°, so that the stacking surface 9 is parallel to the central axis of the upper and lower dies, and its characteristic size is greater than 30 mm, and the upper edge of the stacking surface 8 is provided with a slanting surface 12, the slanting surface 12 and the stacking surface The surface 9 is transitioned by an arc 11 of R = 2 to 4 mm. And the inclined surface is at an angle of 45° with the stacking surface. As the shovel wheel feeds, the sheet is piled up in front of the stack, and the material flow is restrained by the slanting surface to ensure the effective height of the inner cylinder.

The arc radius of the shovel angle 13 of the second shovel 4 is 5 mm, and the exit angle 8 of the shovel wheel is 10°. Since the first shovel is at an angle of 45° with the upper and lower dies, the stacking surface 9 is parallel to the central axis of the upper and lower molds, and its characteristic size is greater than 30 mm. The upper edge of the stacking surface 9 is provided with a sloped surface 12, and the inclined surface 12 and the stacked surface 9 are transitioned by an arc 11 of R=2 to 4 mm, and inclined. The baffle is at an angle of 45° to the stacking surface. As the shovel wheel feeds, the sheet accumulates in front of the stack, and the material flow is restrained by the slanting surface to ensure the effective height of the inner cylinder.

The utility model discloses a crankshaft silicone oil damping shell shovel thickening mold set, which realizes pressing and rotating of a circular sheet material by upper and lower molds, and shovel operation by two shovel wheels to realize a crankshaft The shovel of the inner cylinder of the silicone oil damper case is thickened.

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 (5)

A crankshaft silicone oil damper housing shovel thickening die set, comprising: an upper die mounted on a spinning machine, a lower die, a first shovel wheel and a second shovel wheel, the upper and lower die mounting a circular sheet of the crankshaft silicone oil damper housing is placed on the lower mold and pressed by the upper mold on the rotating shaft of the spinning machine, and the first shovel wheel and the second shovel wheel are mounted on The roller frame of the spinning machine is symmetrically located on both sides of the upper and lower molds, and the wheel axis of the first shovel wheel and the second shovel wheel is at an angle of 45° with the central axis of the upper and lower dies. The crankshaft silicone oil damper housing shovel thickening 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 ribs are The radius is 0.3mm. The crankshaft silicone oil damper housing shovel thickening die set according to claim 1, wherein the radius of the shovel angle of the first shovel wheel is 3 mm, and the shovel wheel is withdrawn The angle is 10°, the upper end surface of the shovel angle is a material accumulation surface, the accumulation surface is parallel to the central axis of the upper and lower molds, and the characteristic size thereof is greater than 30 mm, and the edge of the accumulation surface is provided with a slanting surface, the slanting surface and the slanting surface The stacking surface adopts a circular arc transition of R=2~4mm. The crankshaft silicone oil damper housing shovel thickening die set according to claim 1, wherein the radius of the shovel angle of the second shovel wheel is 5 mm, and the shovel wheel is withdrawn The angle is 10°, the upper end surface of the shovel angle is a material accumulation surface, the accumulation surface is parallel to the central axis of the upper and lower molds, and the characteristic size thereof is greater than 30 mm, and the edge of the accumulation surface is provided with a slanting surface, the slanting surface and the slanting surface An arc transition of R=2 to 4 mm is used between the stacking surfaces. The crankshaft silicone oil damper housing shovel thickening die set according to claim 3 or 4, wherein the slanting surface is at an angle of 45° with the stacking surface.

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