KR100801198B1 - Drive plate and sensor ring manufacturing method for automatic car - Google Patents

Abstract

A manufacturing method of automatic drive plate and sensor ring for automobiles is provided to effective secure stiffness of the drive plate by using a workpiece made from low carbon steel, medium carbon steel or high strength steel sheets, and improve formability and productivity by easily forming the workpiece into a stable state through the preheating process of the workpiece. A manufacturing method of automatic drive plate and sensor ring for automobiles comprises the steps of: sequentially subjecting a steel sheet slit and sheared by a pressing process to blanking, bending, piercing and restriking processes to manufacture a disk type workpiece(10); subjecting the disk type workpiece to a preheating process by a high/low frequency equipment before cold forming the disk type workpiece; rotating a roller(50) and a forming roll(60) on the disk type workpiece to cold form a rim(12) on the entire outer peripheral surface of the disk type workpiece; subjecting the rim formed on the entire outer peripheral surface of the disk type workpiece to a chiseling operation by a hobbing machine to manufacture a drive plate and a sensor ring; and subjecting the manufactured drive plate and sensor ring to an oil cooling process and a heat treatment process.

Description

Drive plate and sensor ring manufacturing method for automatic car

1 to 3 are schematic views sequentially showing an operating state when forming a drive plate according to the present invention

Figure 4 is a schematic diagram showing the operating state of the high frequency and low frequency device according to the present invention

Explanation of symbols on the main parts of the drawings

10; Disc-shaped material 12; Rim

20; Base jig 30; High and low frequency devices

40; Low frequency coil 50; Roller

60; Forming rolls

The present invention relates to a drive plate and sensor ring manufacturing method for automotive automatic, and more particularly, to manufacture a drive plate and sensor ring for automotive automatic carbon steel and high-tensile steel sheet that can secure not only low carbon steel but also rigidity It can be manufactured by using, it is to be preheated by a high frequency and low frequency device before proceeding to the molding process to be easily molded in a stable state.

In general, when the driver rotates by inserting a key into the key box to start and start the vehicle, the start pinion protrudes from the engine side and is inserted into the outer diameter side of the drive plate to rotate the engine. Due to the vehicle's starting and sensoring functions, the parts play an important role in controlling the vehicle's intake, compression, inflation, and exhaust.

The prior art, as disclosed in Korean Patent No. 10-441929, thickened the flesh thickness of the plate by cold forming in six stages in a circular blank, and then hobbing process to produce a sensor ring (CPS), and the water cooling method A method of manufacturing a drive / flexible plate and the like by performing a heat treatment by a heat treatment, and another general manufacturing method is a method of manufacturing a drive gear manufactured by pressing by manufacturing a ring gear as a single combined part by welding. Generalized general technology.

However, such a conventional technique is excessively folds, a phenomenon in which gaps appear as the iron plate is bent from the skin portion of the product to the core portion during cold forming in the case of plastic deformation in six steps. Due to this, the durability is reduced in the form of cracks in the functional test and the misfire test. When the heat treatment by the water-cooled method is shortened, the advantage may be excellent in hardenability, but if some heat treatment conditions are not matched, there is a fatal flaw that progresses to quenching cracks, Only structural low carbon steel (S35C ~ S38C) can be used there are a number of problems, such as the restrictions of the material in the manufacture.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, the present invention is a low carbon steel in the production of automatic drive plate and sensor ring of the automobile can be used for water temperature, medium carbon steel and high tensile steel sheet, etc. In addition to effectively securing the rigidity of the plate, it can be preheated by a high frequency and low frequency device to form a stable state easily before the forming process proceeds, so that overlapping defects occur due to the improvement of moldability. It is an object of the present invention to provide a drive plate and a sensor ring manufacturing method for automobile automatics, which can be suppressed and can shorten the manufacturing process and can efficiently increase the productivity by shortening the manufacturing time.

In order to achieve the above object, the present invention is to produce a disk-like material by sequentially blanking, bending, piercing, wrist-listing the slitting and shearing iron plate by the press method, and produced by the press method Performing a preheating process by a high frequency and a low frequency apparatus before cold forming the disc-shaped material, and rotating the roller and the forming roll on the disc-shaped material to cold-form the rim on the entire outer circumferential surface of the disc-shaped material; To perform a cutting operation using a hobbing machine on the rim formed on the entire outer circumferential surface of the disc-shaped material to manufacture the drive plate and the sensor ring, and to perform the step of performing oil-cooling heat treatment of the manufactured drive plate and the sensor ring. Provided are a drive plate and a sensor ring manufacturing method for a vehicle automatic, characterized in that the present invention.
In addition, the material of the disc-shaped material is characterized in that made of any one of low carbon steel, medium carbon steel, high tensile steel sheet, special steel.
In addition, the preheating process may be 6.5 to 15% of the circumferential length of the disk-shaped material by heat generated by induction heating of a low frequency coil installed in a high frequency and low frequency device, which is a conventional facility, in some cases, at a low temperature unwinding temperature of 200 to 500 ° C or A1. It is characterized by heating at a temperature of 550 to 780 ° C near the transformation point.

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And, the material of the forming roll is characterized in that the tool steel or heat-resistant steel.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object will be described in detail.

1 to 3 are schematic diagrams sequentially showing an operating state when forming a drive plate according to the present invention, Figure 4 is a schematic diagram showing an operating state of the high frequency and low frequency device according to the present invention.

Drive plate and sensor ring manufacturing method for the automotive automatic of the present invention selectively use low carbon steel, medium carbon steel (S20C ~ S70C), high-tensile steel (SAPH440 ~ 590, SP440 ~ 980), special steel (SM400 ~ 570, SHY685) To fabricate the disk-shaped material 10 by the blanking, bending, piercing, and wrist-riking processes, sequentially and then slitting and shearing the steel plate by the press method, and then the disk-shaped material 10 produced by the press method. The disk-shaped material 10 by heat generated by induction heating of the low frequency coil 40 installed in the high frequency and low frequency device 30 which is a conventional facility on one side in a state where it is placed on the base jig 20 before cold forming. ) 6.5 ~ 15% of the circumferential length is heated to a low temperature freezing temperature of 200 ~ 500 ℃ or 550 ~ 780 ℃ near the A1 transformation point, and at the same time, the roller 50 on the disc-shaped material 10 and the tool steel or heat-resistant steel material Castle By rotating the roll (60) and a rim (or flange) 12, the entire outer peripheral surface of the disk-shaped material 10 forming the cold.

Then, the rim 12 formed on the entire outer circumferential surface of the disc-shaped material 10 is subjected to tooth cutting using a hobbing machine to produce a drive plate and a sensor ring, and then the manufactured drive plate. And the sensor is subjected to heat treatment of oil-cooled using a high frequency and low frequency to complete the production.

On the other hand, to produce a disk-shaped material 10 by the blanking, bending, piercing, wrist-riking process sequentially slitting and shearing iron plate by the press method, the drive plate and sensoring manufacturing method of the present invention In application, high formability high carbon steel not only improves cold formability and high frequency quenching characteristics, but also can easily work with high tensile sheet, and the reason of using medium carbon steel and high tensile steel sheet is that Because of its rigidity, it has a long service life in manufacturing a drive plate and has an advantage in repeated fatigue.

Further, in the present invention, before manufacturing the drive plate and the sensor ring before cold forming the disk-shaped material 10 manufactured using materials such as low carbon steel, medium carbon steel, high tensile steel sheet, special steel, first, as shown in FIG. Low temperature unwinding temperature 200 in some cases 6.5-15% of the circumferential length of the disk-shaped material 10 by heat generated by the induction heating of the low frequency coil 40 installed in the high frequency and low frequency device 30, which is a typical facility as described above. Preheat to ~ 500 ℃ or 550 ~ 780 ℃ near A1 transformation point.

At this time, the high-frequency and low-frequency devices as described above are heat energy generated by the induction action of the electromagnetic coil, that is, the conductor resistance of the disk-shaped material 10 located inside the coil 40 as opposed to the direction in which the alternating current flows. When the disk-shaped material 10 is rotated and molded in a state in which red heating is gradually performed prior to molding, the plastic deformation is easily performed as the strength of the material decreases, thereby facilitating molding and overlapping during molding. This phenomenon can be significantly reduced.

In addition, after completing the cutting operation using the hobbing machine to the rim 12 formed on the entire outer circumferential surface of the disc-shaped material 10 by proceeding the molding process as shown in Figures 1 to 3 after the oil-cooled heat treatment In this process, high-temperature heat treatment is performed through parameters such as oil-cooled heat treatment conditions, that is, oil type, oil temperature, and oil injection amount, and stable tempered martensite can be obtained by tempering heat treatment using low frequency. In addition to the less heat treatment method, it is possible to ensure a uniform surface hardness and a stable depth continuously, it is possible to fundamentally suppress the occurrence of cracking during quenching than in the water cooling treatment.

As described above, the present invention can use a low carbon steel, medium carbon steel and high tensile steel sheet in the manufacture of automotive drive plates and sensor rings of automobiles to effectively secure the rigidity of the drive plate, and to proceed with the molding process It can be preheated by all high frequency and low frequency devices, and can be molded easily in a stable state. Therefore, the occurrence of overlapping defects due to the improvement of moldability can be suppressed to the maximum and the manufacturing process can be shortened. It is a very useful invention equipped with many advantages, such as being able to efficiently increase the productivity by shortening.

Claims (4)

Sequentially fabricating the disk-shaped material 10 by a blanking, bending, piercing, and wrist laying process of the slitting and shearing iron plate by the press method; Performing a preheating process by the high frequency and low frequency device 30 before cold forming the disk-shaped material 10 produced by the press method; Cold forming the rim 12 on the entire outer circumferential surface of the disc-shaped material 10 by rotating the roller 50 and the forming roll 60 on the disc-shaped material 10; Manufacturing a drive plate and sensor ring by performing a cutting operation using a hobbing machine on the rim 12 formed on the entire outer circumferential surface of the disc-shaped material 10; The drive plate and the sensor ring manufacturing method for a vehicle automatic, characterized in that to proceed with the step of performing an oil-cooled heat treatment of the produced drive plate and the sensor ring. 2. The method of claim 1, wherein the disc-shaped material (10) is made of any one of low carbon steel, medium carbon steel, high tensile steel, and special steel. The method of claim 1, wherein the preheating process is 6.5 to 15% of the circumferential length of the disc-shaped material 10 by heat generated by induction heating of the low frequency coil 40 installed in the high frequency and low frequency device 30, which is a conventional facility. In some cases, a low temperature unwinding temperature of 200 ~ 500 ℃ or A1 transformation point near the heating temperature of 550 ~ 780 ℃ characterized in that the drive plate for automobile automatic and sensor manufacturing method. 2. The method of claim 1, wherein the forming roll (60) is made of tool steel or heat resistant steel.

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