KR960014942B1 - Heat-treatment transformation checking method of pipe fitting - Google Patents

Heat-treatment transformation checking method of pipe fitting Download PDF

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Publication number
KR960014942B1
KR960014942B1 KR1019940009861A KR19940009861A KR960014942B1 KR 960014942 B1 KR960014942 B1 KR 960014942B1 KR 1019940009861 A KR1019940009861 A KR 1019940009861A KR 19940009861 A KR19940009861 A KR 19940009861A KR 960014942 B1 KR960014942 B1 KR 960014942B1
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KR
South Korea
Prior art keywords
constant velocity
velocity joint
heat treatment
deformation
heat
Prior art date
Application number
KR1019940009861A
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Korean (ko)
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KR950032653A (en
Inventor
윤동영
Original Assignee
대우기전공업 주식회사
양재신
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Priority to KR1019940009861A priority Critical patent/KR960014942B1/en
Publication of KR950032653A publication Critical patent/KR950032653A/en
Application granted granted Critical
Publication of KR960014942B1 publication Critical patent/KR960014942B1/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F27D2005/0081—Details
    • F27D2005/0093—Means to maintain the form of the article

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

This method provides a minimization of size deformation by restraint jig(10) for mechanical restraint on the outer part of uniform joint(1) during heat-treatment. The restraint jig(10) of the ring type of the suitable thickness(t) having the same inside diameter(k) as the outside diameter(o) of uniform joint(1) is made of hard materials such as stainless steel etc.

Description

등속조인트의 열처리변형 방지방법How to Prevent Heat Strain of Constant Velocity Joints

제1도는 본 발명의 등속조인트의 열처리변형 방지방법에 적용되는 일실시예의 부품의 단면도 및 정면도.1 is a cross-sectional view and a front view of a component of an embodiment applied to the method for preventing heat deformation of a constant velocity joint of the present invention.

제2도는 본 발명의 등속조인트의 열처리변형 방지방법에 사용되는 부재를 도시하는 단면도 및 정면도이다.2 is a cross-sectional view and a front view showing a member used in the method for preventing heat deformation of the constant velocity joint of the present invention.

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

1 : 등속조인트 2 : 나사부1: Constant velocity joint 2: Threaded part

10 : 제한지그10: limit jig

본 발명은 등속조인트의 열처리변형 방지방법에 관한 것으로서, 더욱 상세히는 등속조인트의 열처리시에 유발되는 변형을 방지하기 위한 방법에 관한 것이다.The present invention relates to a method for preventing heat deformation of a constant velocity joint, and more particularly, to a method for preventing deformation caused during heat treatment of a constant velocity joint.

자동차의 부품의 경우, 대부분 강성을 증대하기 위하여 열처리를 행하게 되고 이 열처리에 의하여 부품은 그 금속적인 성질이 변하게 된다.In the case of automobile parts, heat treatment is mostly performed to increase rigidity, and the metal properties of the parts are changed by this heat treatment.

그러나, 금속적 특성을 변화시키기 위하여 행하는 열처리는 치수의 변형을 가져오는 경우가 많고, 이러한 치수의 변형은 특히 국부적으로 서로 상이한 치수를 가지는 부품의 경우에 다발한다.However, heat treatments performed to change metallic properties often lead to deformation of the dimensions, and such deformation of the dimensions is particularly common in the case of parts having different dimensions from each other locally.

상기와 같은 문제점을 감안하여 본 발명의 등속조인트의 열처리변형 방지방법은 부품, 특히 등속조인트의 열처리에 의한 치수의 변화를 방지할 수 있는 방법을 제공하는 것을 특징으로 한다.In view of the above problems, the method for preventing heat treatment deformation of a constant velocity joint of the present invention is characterized by providing a method capable of preventing a change in dimensions due to heat treatment of a component, particularly a constant velocity joint.

이하의 부수된 도면과 함께 본 발명의 등속조인트이 열처리변형 방지방법을 하나의 실시예로서 설명한다.The constant velocity joint of the present invention together with the accompanying drawings will be described as an embodiment of the method for preventing heat treatment deformation.

제1도는 본 발명의 등속조인트의 열처리변형 방지방법이 적용되는 일실시예의 부품의 단면도 및 정면도, 제2도는 본 발명의 등속조인트의 열처리변형 방지방법에 사용되는 부재를 도시하는 단면도 및 정면도로서 함께 설명한다.1 is a cross-sectional view and a front view of a component of an embodiment to which the method for preventing heat treatment deformation of a constant velocity joint of the present invention is applied, and FIG. 2 is a cross-sectional view and front view showing a member used for the method for preventing heat treatment deformation of a constant velocity joint according to the present invention. Explain together.

제1도에서 등속조인트(1)를 열처리하는 경우 외륜내부를 고주파로서 열처리하고자 하는 경우, 외륜의 각부(a,b,c)는 그 두께가 상이하고 이로 인하여 팽창과 수축시에 치수의 변형이 유발된다.When the constant velocity joint 1 is heat-treated in FIG. 1, when the inner ring is heat treated at high frequency, the parts a, b, and c of the outer ring have different thicknesses, which causes deformation of the dimensions during expansion and contraction. Triggered.

이 치수 변형값은 특히 중요한 관리값인 내경(k)을 변화시키게 되는데, 이는 외경(o)의 축중심반대방향으로의 팽창에 기인하는 바가 크다. 상기와 같은 내경(k)의 변화량을 제어하기 위하여 제2도에서와 같은 링형상의 제한지그(10)를 사용한다.This dimensional deformation value changes the inner diameter k, which is a particularly important management value, largely due to the expansion of the outer diameter o in the direction opposite to the center of axis. In order to control the amount of change in the inner diameter k as described above, the ring-shaped restriction jig 10 as shown in FIG. 2 is used.

제한지그(10)는 관리하고자 하는 외경(o)치수와 같은 내경(k)을 가지게 되고 적의의 두께(t)를 가지고 압입되기에 용이하게 내부에는 단이 진 내경부를 가진다. 제한지글(10)는 스테인레스와 같은 강성이 있는 소재로서 가공하는 것이 바람직하다.The restriction jig 10 has an inner diameter k that is equal to the outer diameter o to be managed and has an inner diameter part having a stepped inside thereof so as to be easily press-fitted with the thickness t of the enemy. The restriction jig 10 is preferably processed as a rigid material such as stainless steel.

상기의 제한지그(10)를 가공하는 등속조인트의 외륜부에 압입하고 이 상태로서 고주파처리를 하게 되면 제한지글(10)에 의하여 그 팽창량이 구속되고 따라서 그 내경(k)역시 설계치대로 구속되어 그 변형이 최소화된다.When press-fitting into the outer ring part of the constant velocity joint for processing the above-mentioned restriction jig 10 and performing high frequency processing in this state, the expansion amount is constrained by the restriction jig 10 and therefore its inner diameter k is also restrained according to the design value. Deformation is minimized.

상기의 예에서는 등속조인트를 예로서 설명하였지만 다른 다양한 부품의 경우에도 적용될 수 있음은 물론이다.In the above example, the constant velocity joint has been described as an example, but it can be applied to other various parts.

상기와 같은 본 발명의 등속조인트의 열처리변형 방지방법은 비교적 간단하고도 저렴한 방법으로 열처리에 따른 치수의 변화를 최소화하는 유용한 발명인 것이다.The method of preventing heat treatment deformation of the constant velocity joint of the present invention as described above is a useful invention for minimizing the change of dimensions due to heat treatment in a relatively simple and inexpensive manner.

Claims (1)

열처리시에 팽창하는 등속조인트의 외단부를 기계적으로 구속하는 치수변형을 극소화하기 위하여, 관리하고자 하는 외경(o) 치수와 같은 내경(k)을 가지고 적의의 두께(t)를 가지는 스테인레스등의 강성소재의 링형상의 제한지그(10)를 상기 등속조인트의 외단부에 장착한 상태에서 가열처리하는 것을 특징으로 하는 등속조인트의 열처리변형 방지방법.In order to minimize the dimensional deformation that mechanically constrains the outer end of the constant velocity joint that expands during heat treatment, rigidity such as stainless steel having an inner diameter k equal to the outer diameter o to be managed and having an appropriate thickness t Heat treatment deformation preventing method of the constant velocity joint, characterized in that the heat treatment in the state in which the ring-shaped limiting jig (10) of the material attached to the outer end of the constant velocity joint.
KR1019940009861A 1994-05-04 1994-05-04 Heat-treatment transformation checking method of pipe fitting KR960014942B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940009861A KR960014942B1 (en) 1994-05-04 1994-05-04 Heat-treatment transformation checking method of pipe fitting

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Application Number Priority Date Filing Date Title
KR1019940009861A KR960014942B1 (en) 1994-05-04 1994-05-04 Heat-treatment transformation checking method of pipe fitting

Publications (2)

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KR950032653A KR950032653A (en) 1995-12-22
KR960014942B1 true KR960014942B1 (en) 1996-10-21

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