JP2008073702A - Manufacturing method of drive plate and sensor ring for automatic vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing device for manufacturing a drive plate for an automatic vehicle by using a heavy carbon steel, a high-tensile steel plate or the like. <P>SOLUTION: The manufacturing method of the drive plate and the sensor ring for an automatic vehicle includes: a step of manufacturing a disk-shaped stock material 10 by the finish stamping by successively performing blanking, bending and perforating of an iron plate subjected to slitting and shearing by a pressing method; a step of performing a preheating step by high frequency and low frequency devices before forming the disk-shaped stock material; a step of forming a rim 12 over the entire outer circumferential surface of the disk-shaped stock material; a step of manufacturing the drive plate by gear-cutting the formed rim by using a gear hobbing machine, and a step of performing the oil cooling/heating treatment of the manufactured drive plate by using high frequency and low frequency. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a drive plate and a sensor ring manufacturing method for an automatic vehicle, and more specifically, a drive plate for an automatic vehicle, such as heavy carbon steel and high-tensile steel plate that can ensure the rigidity of the drive plate. It is related with the manufacturing method which can pre-heat with the high frequency and low frequency apparatus which is the equipment specialized before the shaping | molding process, and can shape | mold easily in the stable state.

  In general, when a driver gets into a vehicle and inserts a key into a key box to start the engine and rotates it, the start pinion protrudes from the side of the engine and is inserted on the outer diameter side of the drive plate. The drive plate is a part that plays an important role in controlling the intake, compression, expansion, exhaust, etc. of the fuel by the start function and the sensoring function of the vehicle.

In the prior art, as disclosed in Korean Patent Registration No. 10-441929, the thickness of the plate material is increased by molding in six stages from a circular blank, and then hobbing to produce a pulse ring (CPS), A method of manufacturing a drive / flexible plate by performing a heat treatment by a water cooling method, and a method of manufacturing the ring gear by pressing the drive plate and manufacturing the ring gear, and then manufacturing the drive plate and the ring gear as one component by welding. Is the current general-purpose technology.
Korean Patent Registration No. 10-441929

  However, in the conventional technique, when the iron plate is bent in the deep direction from the surface portion of the product when it is fired and deformed in six stages at the time of forming, folds, which is a phenomenon in which scratches appear by bending, occur. Occurs frequently. For this reason, in the functional test and misfire test, the durability is reduced due to the cracked state, and when the blanked product is molded, the first roll collides with the product, due to the increase in strength, pressure, temperature due to initial thickening, The service life of the roll is shortened. The heat treatment by the water-cooling method has an advantage that it has excellent hardenability, but if the heat treatment conditions do not completely match, there is a fatal defect that a quenching crack occurs. . In addition, since only carbon steel for machine structural use (S35C to S38C) can be used at the time of production, there are many problems such as a limitation of materials.

  Accordingly, the present invention has been made to solve the above-described conventional problems, and the object of the present invention is to produce heavy carbon steel or high-tensile steel plate when manufacturing a drive plate for an automatic vehicle. Can be used effectively to ensure the rigidity of the drive plate, and it is preheated by high-frequency and low-frequency devices, which are specialized equipment before the molding process, and can be easily maintained in a stable state. As a result of improved moldability, the phenomenon of entrainment can be suppressed to the maximum, and the manufacturing process can be shortened, and the productivity can be improved efficiently by shortening the manufacturing time. An object of the present invention is to provide a method for manufacturing a drive plate and a sensor ring for an automatic vehicle.

  In order to achieve the above object, a manufacturing method of a drive plate and a sensor ring for an automatic vehicle according to the present invention includes blanking, bending, and drilling sequentially on an iron plate slitted and sheared by a press method. , A step of manufacturing a disk mold material using a mold in a finish stamping operation process, and a step of performing a preheating process with a high frequency and a low frequency device before forming the disk mold material manufactured by the press method. And rotating the disk mold material upper roller and a molding roll to mold a rim on the entire outer peripheral surface of the disk mold material; and a rim molded on the entire outer peripheral surface of the disk mold material, A hobbing machine is used to perform gear cutting to manufacture a drive plate, and high frequency and low frequency are applied to the manufactured drive plate. Characterized in that it comprises the steps of performing have oil cooling heat treatment.

  The disc-shaped material is made of any one of heavy carbon steel, high-tensile steel plate, and special steel.

  In addition, the preheating process is performed by using the heat generated by the low frequency coils installed in the high frequency and low frequency devices, which are specialized facilities, to make approximately 6.5 to 15% of the outer circumference of the disk-shaped material from the A1 transformation. Heating to a point (723 ° C.).

  Furthermore, the material of the forming roll is made of tool steel or heat resistant steel.

  The present invention can use heavy carbon steel, high-strength steel plate, etc. when manufacturing drive plates for automatic automobiles, and can not only ensure the rigidity of the drive plates but also the molding process. Preheating with high-frequency and low-frequency equipment, which was previously dedicated equipment, and easy molding in a stable state, so that the phenomenon of entanglement can be suppressed to the maximum by improving moldability It is a very useful invention that has many advantages, such as being able to shorten the manufacturing process and efficiently improving productivity by shortening the manufacturing time.

  Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

  FIG. 1 to FIG. 3 are schematic views sequentially showing the operating state at the time of molding the drive plate according to the present invention, and FIG. 4 is a configuration diagram schematically showing the operating state of the high-frequency and low-frequency device according to the present invention. It is.

  For the manufacturing method of the drive plate and sensor ring for the automatic automobile of the present invention, heavy carbon steel (S20C-S70C), high-tensile steel plate (SAPH440-590, SP440-980), special steel (SM400-570, SHY685), etc. are selected. After the steel plate that has been slitted and sheared by the press method is used in sequence, blanking, bending and drilling are performed, and the disc mold material 10 is manufactured using a die in the final stamping process. Before the disk material 10 manufactured by this press method is formed, it is placed on the base jig 20 and is installed on the high-frequency and low-frequency device 30 which is a dedicated facility from one side. Due to the heat generated from the low frequency coil 40, about 6.5 to 15% from the outer periphery of the disk-shaped material 10 is A1 transformation point 723 ° C Simultaneously with the heating, the roller 50 and a forming roll made of tool steel or heat-resistant steel material are rotated on the disk mold material 10 to form a rim (or flange) 12 on the entire outer peripheral surface of the disk mold material 10. To do.

  Next, a hobbing machine is used to cut the rim 12 formed on the entire outer peripheral surface of the disc mold material 10 to manufacture a drive plate, and then high frequency and low frequency are applied to the manufactured drive plate. The oil-cooled heat treatment used is performed to complete the production.

  On the other hand, when manufacturing the drive plate of the present invention, the steel plate that has been slit and sheared by the press method is sequentially blanked, bent, drilled, and the die is used in the final stamping process. Although the mold material 10 is manufactured, in particular, when using a high formability carbon steel, not only the formability and induction hardening characteristics are improved, but also a high strength steel plate can be used easily. Also, the reason for using heavy carbon steel and high-tensile steel plate material is that it has higher strength rigidity than low carbon steel, so when manufacturing drive plates, it has a long service life and is advantageous for repeated fatigue. Because there is an advantage.

  In the present invention, when the drive plate is manufactured, before forming the disk-shaped material 10 manufactured using materials such as heavy carbon steel, high-tensile steel plate, and special steel, first, FIG. About 6.5 to 15% from the outer periphery of the disk-shaped material 10 by the heat generated from the low-frequency coil 40 of the high-frequency and low-frequency device 30 which is a dedicated equipment as shown, is the A1 transformation point (723 ° C.). Heat to.

  At this time, the high-frequency and low-frequency devices as described above are caused by the inductive action of the electronic coil, that is, the thermal energy generated by the conductor resistance of the disk-shaped material 10 located inside the coil 40 through which an alternating current flows. It is possible to mold the disk mold material 10 in a state of being gradually heated in red before molding, and since it becomes a condition that the firing deformation becomes easy as the material becomes brittle, the molding work is facilitated. Thus, the phenomenon of entanglement during molding can be significantly reduced.

  In addition, after a molding process as shown in FIGS. 1 to 3, the rim 12 formed on the entire outer peripheral surface of the disk mold material 10 is subjected to gear cutting using a hobbing machine, and then oil-cooled heat treatment. In order to obtain stable tempered martensite by tempering heat treatment using low frequency, by performing high frequency heat treatment according to the parameters of oil cooling heat treatment, that is, heating temperature, heating time, oil temperature, oil injection amount, etc. Compared to other heat treatment methods, deformation is less likely to occur, and uniform surface hardness and stable thickness can be ensured continuously, effectively suppressing cracking during quenching compared to water cooling. can do.

It is the schematic which shows the operation state at the time of the drive plate shaping | molding which concerns on this invention in order. It is the schematic which shows the operation state at the time of the drive plate shaping | molding which concerns on this invention in order. It is the schematic which shows the operation state at the time of the drive plate shaping | molding which concerns on this invention in order. It is a block diagram which shows roughly the operating state of the high frequency and low frequency apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Disc type material 12 Rim 20 Base jig 30 High frequency and low frequency apparatus 40 Low frequency coil 50 Roller 60 Forming roll

Claims (4)

A step of blanking, bending and drilling the steel plate slitted and sheared by the press method in order, and manufacturing the disk mold material 10 using a mold in a finishing stamping process;
A step of performing a preheating step with the high-frequency and low-frequency device 30 before molding the disk mold material 10 manufactured by the press method;
Rotating the roller 50 and the forming roll 60 on the disc mold material 10 to mold the rim 12 on the entire outer peripheral surface of the disc mold material 10;
Performing a gear cutting process using a hobbing machine on the rim 12 formed on the entire outer peripheral surface of the disk mold material 10 to produce a drive plate;
And a method of manufacturing a drive plate and a sensor ring for an automatic vehicle, comprising: performing an oil cooling heat treatment using high frequency and low frequency on the manufactured drive plate.   The method for manufacturing a drive plate and a sensor ring for an automatic vehicle according to claim 1, wherein the material of the disk-shaped material 10 is any one of heavy carbon steel, high-tensile steel plate, and special steel. .   In the preheating step, about 6.5 to 15% from the outer periphery of the disc-shaped material 10 is A1 by heat generated by the low frequency coil 40 installed in the high frequency and low frequency device 30 which is a dedicated facility. The manufacturing method of a drive plate and a sensor ring for an automatic vehicle according to claim 1, wherein heating is performed to a transformation point (723 ° C).   The method for manufacturing a drive plate and sensor ring for an automatic vehicle according to claim 1, wherein the material of the forming roll (60) is made of tool steel or heat resistant steel.

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