KR20020027984A - Oil pressure control valve manufacture method of power steering - Google Patents

Oil pressure control valve manufacture method of power steering Download PDF

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Publication number
KR20020027984A
KR20020027984A KR1020000058823A KR20000058823A KR20020027984A KR 20020027984 A KR20020027984 A KR 20020027984A KR 1020000058823 A KR1020000058823 A KR 1020000058823A KR 20000058823 A KR20000058823 A KR 20000058823A KR 20020027984 A KR20020027984 A KR 20020027984A
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KR
South Korea
Prior art keywords
control valve
valve body
power steering
hydraulic control
input shaft
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KR1020000058823A
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Korean (ko)
Inventor
박진묵
Original Assignee
밍 루
주식회사 만도
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Application filed by 밍 루, 주식회사 만도 filed Critical 밍 루
Priority to KR1020000058823A priority Critical patent/KR20020027984A/en
Publication of KR20020027984A publication Critical patent/KR20020027984A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/07—Supply of pressurised fluid for steering also supplying other consumers ; control thereof
    • B62D5/075—Supply of pressurised fluid for steering also supplying other consumers ; control thereof using priority valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2304/00—Optimising design; Manufacturing; Testing
    • B60Y2304/05—Reducing production costs, e.g. by redesign

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)

Abstract

PURPOSE: A hydraulic control valve manufacturing method for a power steering system is provided to form edges of inner grooves of a valve body simultaneously with the forming of the inner grooves by broaching, thereby reducing the machining time and cost. CONSTITUTION: A hydraulic control valve manufacturing method for a power steering system includes an input shaft formed with a plurality of outer grooves on outer peripheral surface, and a valve body(20) mounted outside the input shaft and formed with a plurality of inner grooves(21) on an inner peripheral surface, wherein edges(70) are formed outside the inner grooves by broaching the inner grooves of the valve body.

Description

파워스티어링의 유압제어밸브 제조방법 {OIL PRESSURE CONTROL VALVE MANUFACTURE METHOD OF POWER STEERING}Manufacturing method of hydraulic control valve of power steering {OIL PRESSURE CONTROL VALVE MANUFACTURE METHOD OF POWER STEERING}

본 발명은 파워스티어링의 유압제어밸브에 관한 것으로, 보다 상세하게는 유압의 방향성을 결정하는 엣지(EDGE)를 밸브바디의 내부홈과 함께 브로칭 가공하는 차량용 조향장치의 유압제어밸브 제조방법에 관한 것이다.The present invention relates to a hydraulic control valve of power steering, and more particularly, to a method for manufacturing a hydraulic control valve of a vehicle steering apparatus for broaching the edge (EDGE) to determine the directionality of the hydraulic pressure with the inner groove of the valve body. will be.

일반적으로 파워스티어링은 스티어링휠과 바퀴사이에 설치되어 바퀴의 원활한 조타를 위하여 설치되는 것으로, 그 일반적인 구성은 좌우회전가능한 스티어링휠에 조향축을 개재하여 설치되고, 이 조향축의 하단에는 스티어링휠의 좌우회전에 대응하여 유체의 유동을 제어함으로써 스티어링휠의 작동을 엑츄에이터에 전달하는 유압제어밸브가 설치된다.In general, the power steering is installed between the steering wheel and the wheel is installed for smooth steering of the wheel, the general configuration is installed via the steering shaft to the left and right rotating steering wheel, the lower side of the steering shaft is rotated left and right of the steering wheel In response to this, a hydraulic control valve is installed to transmit the operation of the steering wheel to the actuator by controlling the flow of the fluid.

도 1은 이러한 종래의 유압제어밸브를 보인 분해사시도이다. 이에 도시된 바와 같이 유압제어밸브는, 조향축에서 연장되는 입력축(10)과, 그 속에 내장되어 함께 회전할 수 있는 토션바(30)와, 입력축(10)이 내장되는 밸브바디(20)와 입력축(10)의 하단에 연결되는 피니언기어(40)로 크게 나눌 수 있다.1 is an exploded perspective view showing such a conventional hydraulic control valve. As shown therein, the hydraulic control valve includes an input shaft 10 extending from the steering shaft, a torsion bar 30 that can be rotated together therein, a valve body 20 in which the input shaft 10 is embedded, and The pinion gear 40 connected to the lower end of the input shaft 10 can be largely divided.

그리고, 입력축(10)의 외주면에는 다수의 외부홈(11)이 형성되어 있고, 도 2에 도시된 바와 같이 밸브바디(20)의 내주면에는 다수의 내부홈(21)이 형성되어 있어 유압이 입력축(10)의 외부홈(11)과 밸브바디(20)의 내부홈(21)을 통해 이동함에 따라 조향을 위한 배력이 발생한다.In addition, a plurality of outer grooves 11 are formed on the outer circumferential surface of the input shaft 10, and a plurality of inner grooves 21 are formed on the inner circumferential surface of the valve body 20 as shown in FIG. As the force moves through the outer groove 11 of the 10 and the inner groove 21 of the valve body 20, a back force for steering occurs.

또, 입력축(10)의 외주면에는 엣지(50,EDGE)가 가공되어 동력실린더로 공급되는 유압이 랙기어와 피스톤을 부드럽게 밀어 조향력을 부드럽게 한다.In addition, the edge 50 (EDGE) is processed on the outer circumferential surface of the input shaft 10 so that the hydraulic pressure supplied to the power cylinder gently pushes the rack gear and the piston to smooth the steering force.

이와 같은 종래의 차량용 조향장치의 유압제어밸브는, 스티어링휠을 회전시킬 때 랙기어에 타이어의 전진저항이 작용하기 때문에 토션바(30)가 비틀리게 되고, 이때 입력축(10)에 형성된 엣지(50)에 의해 동력실린더로 공급되는 유압이 랙기어와 피스톤을 부드럽게 밀어 조향력을 부드럽게 한다.In the conventional hydraulic control valve of the vehicle steering apparatus, the torsion bar 30 is twisted because the forward resistance of the tire acts on the rack gear when the steering wheel is rotated, and at this time, the edge 50 formed on the input shaft 10. ), The hydraulic pressure supplied to the power cylinder gently pushes the rack gear and the piston to smooth steering.

그러나 이와 같은 종래의 차량용 조향장치의 유압제어밸브는, 입력축의 외주면에 별도의 엣지를 가공하여 사용함으로써 가공비용이 상승되는 문제점이 있었다.However, such a conventional hydraulic control valve of a vehicle steering apparatus has a problem in that processing costs are increased by using a separate edge on the outer circumferential surface of the input shaft.

본 발명은 이와 같은 종래의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 유압의 방향성을 결정하는 엣지를 밸브바디의 내부홈과 함께 브로칭 가공하는 차량용 조향장치의 유압제어밸브 제조방법을 제공하는 것이다.The present invention is to solve such a conventional problem, an object of the present invention is to provide a method for manufacturing a hydraulic control valve of a vehicle steering apparatus for broaching the edge to determine the directionality of the hydraulic with the inner groove of the valve body. will be.

도 1은 종래 파워스티어링의 유압제어밸브를 보인 분해사시도이다.1 is an exploded perspective view showing a hydraulic control valve of a conventional power steering.

도 2는 도 1에 도시된 밸브바디의 횡단면도이다.2 is a cross-sectional view of the valve body shown in FIG.

도 3은 본 발명에 따른 밸브바디의 횡단면도이다.3 is a cross-sectional view of the valve body according to the present invention.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10:입력축11:외부홈10: input shaft 11: outer groove

20:밸브바디21:내부홈20: valve body 21: internal groove

30:토션바40:피니언기어30: torsion bar 40: pinion gear

70:엣지70: Edge

이와 같은 목적을 달성하기 위하여 본 발명은, 중단 외주면에 다수개의 외부홈이 형성된 입력축과, 상기 입력축의 외부에 설치되며 내주면에는 다수개의 내부홈이 형성된 밸브바디를 구비하는 파워스티어링의 유압제어밸브에 있어서, 상기 밸브바디의 내주면에 형성된 내부홈을 브로칭 가공으로 형성함으로써 상기 내부홈의 외측에 브로칭 가공되는 엣지가 형성되는 것을 특징으로 한다.In order to achieve the above object, the present invention, in the hydraulic control valve of the power steering having an input shaft formed with a plurality of outer grooves on the outer peripheral surface of the interruption, and a valve body installed on the outside of the input shaft and formed with a plurality of inner grooves on the inner peripheral surface In an embodiment, the inner groove formed on the inner circumferential surface of the valve body is formed by broaching to form an edge which is broached on the outer side of the inner groove.

이하에서는 첨부한 도면을 참조하여 본 발명에 따른 바람직한 일실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention;

본 발명에 따른 유압제어밸브의 구조는 엣지구조를 제외한 다른 구성요소가 종래의 유압제어밸브와 동일하므로 동일한 부분에 대해서는 동일명칭과 동일부호를 사용한다.The structure of the hydraulic control valve according to the present invention uses the same name and the same reference numerals for the same parts because other components except the edge structure is the same as the conventional hydraulic control valve.

먼저, 도 1을 참조하여 유압제어밸브를 간략히 설명하면 다음과 같다. 조향축에서 연장되는 입력축(10)과, 그 속에 내장되어 함께 회전할 수 있는 토션바(30)와, 입력축(10)이 내장되는 밸브바디(20)와 입력축(10)의 하단에 연결되는 피니언기어(40)로 크게 나눌 수 있는데, 입력축(10)의 외주면에는 다수의 외부홈(11)이 형성되어 있고, 밸브바디(20)의 내주면에는 다수의 내부홈(21)이 형성된다.First, a brief description of the hydraulic control valve with reference to FIG. An input shaft 10 extending from the steering shaft, a torsion bar 30 embedded therein to rotate together, a valve body 20 in which the input shaft 10 is embedded, and a pinion connected to the lower end of the input shaft 10. It can be divided into a large gear 40, a plurality of outer grooves 11 are formed on the outer peripheral surface of the input shaft 10, a plurality of inner grooves 21 are formed on the inner peripheral surface of the valve body (20).

한편, 도 3에 도시된 바와 같이 본 발명 밸브바디(20)의 내부에 마련되는 내부홈(21)은 브로칭 가공으로 형성된다.On the other hand, as shown in Figure 3 the inner groove 21 provided in the interior of the valve body 20 of the present invention is formed by broaching process.

이 브로칭 가공은 봉의 외주에 많은 상사형의 날을 축을 따라 치수순으로 배열한 절삭공구를 축방향으로 이동시켜 각이나, 홈구멍 그리고 키홈 등을 형성하는 것이다.In this broaching process, a cutting tool, in which many similar-shaped blades are arranged in the dimensional order along the axis on the outer circumference of the rod, is moved in the axial direction to form angles, groove holes, key grooves, and the like.

또한 본 발명에서는 밸브바디(20)의 내부에 내부홈(21)을 형성할 때 이와 함께 엣지(70)가 형성되도록 마련된다.In addition, in the present invention, when the inner groove 21 is formed in the valve body 20, the edge 70 is formed to be formed therewith.

즉, 브로칭 공구의 형상을 변경하여 밸브바디(20)의 내부에 내부홈(21)을 가공함과 동시에 엣지(70)가 형성되도록 한 것이다.That is, by changing the shape of the broaching tool is to process the inner groove 21 in the valve body 20 at the same time the edge 70 is formed.

이로써 스티어링휠을 회전시킬 때 랙기어에 타이어의 전진저항이 작용하기 때문에 토션바(30)가 비틀리게 되고, 이때 밸브바디(20)에 형성된 엣지(70)에 의해 동력실린더로 공급되는 유압이 랙기어와 피스톤을 부드럽게 밀어 조향력을 부드럽게 한다.This causes the torsion bar 30 to twist because the forward resistance of the tire acts on the rack gear when the steering wheel is rotated. At this time, the hydraulic pressure supplied to the power cylinder by the edge 70 formed on the valve body 20 is racked. Gently push on the gear and piston to smooth the steering.

이상에서 설명한 바와 같이, 본 발명에 따른 파워스티어링의 유압제어밸브 제조방법은 밸브바디의 내주면에 내부홈을 브로칭 가공을 실행할 때 이와 함께 엣지가 형성되도록 함으로써 가공공정 및 가공비용이 절감되는 이점이 있다.As described above, the method of manufacturing the hydraulic control valve of the power steering according to the present invention has the advantage of reducing the machining process and the processing cost by forming an edge along with the broaching the inner groove on the inner peripheral surface of the valve body have.

Claims (1)

중단 외주면에 다수개의 외부홈이 형성된 입력축과, 상기 입력축의 외부에 설치되며 내주면에는 다수개의 내부홈이 형성된 밸브바디를 구비하는 파워스티어링의 유압제어밸브에 있어서,In the hydraulic control valve of the power steering having an input shaft formed with a plurality of outer grooves on the outer peripheral surface of the interruption, and a valve body installed on the outside of the input shaft and formed with a plurality of inner grooves on the inner peripheral surface, 상기 밸브바디(20)의 내주면에 형성된 내부홈(21)을 브로칭 가공으로 형성함으로써 상기 내부홈(21)의 외측에 브로칭 가공되는 엣지(70)가 형성되는 것을 특징으로 하는 차량용 조향장치의 유압제어밸브 제조방법.By forming an inner groove 21 formed on the inner circumferential surface of the valve body 20 by broaching, an edge 70 which is broached on the outside of the inner groove 21 is formed. How to manufacture a hydraulic control valve.
KR1020000058823A 2000-10-06 2000-10-06 Oil pressure control valve manufacture method of power steering KR20020027984A (en)

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KR1020000058823A KR20020027984A (en) 2000-10-06 2000-10-06 Oil pressure control valve manufacture method of power steering

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128051A (en) * 1983-01-07 1984-07-24 Toyoda Mach Works Ltd Rotary servo valve
JPH01240370A (en) * 1988-03-18 1989-09-25 Koyo Seiko Co Ltd Hydraulic control valve
KR960022177U (en) * 1994-12-29 1996-07-20 Control valve and trimming device for automobile power handle
KR970036865U (en) * 1995-12-27 1997-07-26 만도기계주식회사 Structure of automotive power steering rotary valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128051A (en) * 1983-01-07 1984-07-24 Toyoda Mach Works Ltd Rotary servo valve
JPH01240370A (en) * 1988-03-18 1989-09-25 Koyo Seiko Co Ltd Hydraulic control valve
KR960022177U (en) * 1994-12-29 1996-07-20 Control valve and trimming device for automobile power handle
KR970036865U (en) * 1995-12-27 1997-07-26 만도기계주식회사 Structure of automotive power steering rotary valve

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