WO2017090796A1 - Apparatus for high-frequency heat treatment of stub shafts, having eddy-current-testing total inspection function - Google Patents

Apparatus for high-frequency heat treatment of stub shafts, having eddy-current-testing total inspection function Download PDF

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Publication number
WO2017090796A1
WO2017090796A1 PCT/KR2015/012810 KR2015012810W WO2017090796A1 WO 2017090796 A1 WO2017090796 A1 WO 2017090796A1 KR 2015012810 W KR2015012810 W KR 2015012810W WO 2017090796 A1 WO2017090796 A1 WO 2017090796A1
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Prior art keywords
stub shaft
inspection
heat treatment
high frequency
unit
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PCT/KR2015/012810
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French (fr)
Korean (ko)
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박종규
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박종규
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Publication of WO2017090796A1 publication Critical patent/WO2017090796A1/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • 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
    • C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the present invention relates to a high frequency heat treatment apparatus for a stub shaft, and more particularly, an inspection unit for inspecting the high frequency heat treatment state of the stub shaft by an eddy current flaw detection method is installed on one side of the stub shaft, and the stub shaft according to the result of the inspection on one side of the inspection unit.
  • the present invention relates to a high-frequency heat treatment apparatus for stub shafts having an eddy current flaw detection system capable of inspecting the entire stub shaft and preventing the mixing of defective products.
  • a stub shaft is one of the components constituting the drive shaft that transmits the rotational force of the vehicle engine to the axle.
  • the stub shaft is formed of a disk-shaped flange portion and a shaft portion protruding from the center of the flange portion, and is a component requiring durability of the shaft portion as the rotational force is transmitted by the shaft portion on which the spline is formed.
  • High frequency heat treatment is required to increase the surface hardness of the shaft portion of the stub shaft to satisfy the durability requirements, and the conventional high frequency heat treatment apparatus of the stub shaft has a structure in which high frequency heat treatment and taking out each one separately while continuously feeding and feeding the stub shaft. to be.
  • the conventional high frequency heat treatment apparatus has a problem in that good quality and poor quality are mixed as it is discharged to the discharge conveyor without inspecting whether the high frequency heat treatment is properly performed after the high frequency heat treatment and taking out the stub shaft.
  • the present invention has been invented to solve the above problems, and when the high frequency heat treatment stub shaft is taken out and discharged, the high frequency heat treatment quality is inspected by the eddy current flaw detection method, which is a non-destructive test, to separate and discharge the defective product into the good and defective parts. It is an object of the present invention to provide a high frequency heat treatment apparatus for a stub shaft that has an eddy current flaw detection system capable of performing a full inspection quickly and easily.
  • the high frequency heat treatment apparatus of the stub shaft having a full inspection function of the eddy current flaw detection method according to the present invention for achieving the above object is made of a supply conveyor for supplying the stub shaft in a vertical standing state;
  • An input unit for inputting the stub shaft supplied from the supply unit comprising an input block installed at an upper side of the supply conveyor to move vertically and horizontally and an input chuck installed at an end of the movable block and exerting an attraction force by pneumatic pressure;
  • a worktable installed on one side of the supply conveyor, a transport table installed parallel to the rear side of the work bench and horizontally moving from side to side and back and forth, and a plurality of transport jigs installed on one side of the transport table at regular intervals and holding the stub shaft.
  • Conveying portion for conveying the stub shaft injected into the upper portion of the work table by the input portion at a predetermined interval;
  • the first induction coil and the second induction coil which are installed at a predetermined distance on the upper side of the work table and are arranged at intervals corresponding to the interval of the transfer jig, and the inner side of the first induction coil and the second induction coil, respectively.
  • the first mill piece and the stub shaft disposed in a position corresponding to the two induction coil and consisting of a first mill piece and a second mill piece to protrude upwardly through the work table and rotated along the work table by the conveying unit.
  • a high frequency heat treatment unit which performs high frequency quenching and tempering in order while raising and lowering the second compact piece;
  • a movable block installed on one side of the work bench and vertically and horizontally moved; and a blowout chuck installed at an end of the movable block to exert an attraction force by pneumatic pressure. part;
  • An inspection unit provided below the extraction unit and inspecting a high frequency heat treatment defect by flowing an eddy current through the stub shaft taken out by the extraction unit;
  • a separating part installed at an upper side of the inspection part and separating and discharging the stub shaft into good and defective goods according to the inspection result of the inspection part.
  • the inspection unit is provided with an inspection table, and an inspection hole through which the stub shaft is inserted in the center of the inspection table and inserted into the center thereof, and an eddy current coil installed with an eddy current supplied inside the inspection hole to transmit the eddy current to the stub shaft.
  • a test probe to be installed on the other side of the test stand and a test hole through which a stub shaft of a good product is inserted in the center of which there is no high-frequency heat-treatment defect, and an eddy current coil in which an eddy current is supplied inside the test hole is installed.
  • a discriminator for discriminating high frequency heat treatment defects of the stub shaft by comparing the amplitude of the eddy current received from the test probe and the standard probe, respectively.
  • the separation unit is installed on the upper side of the test table and horizontal and vertical movement of the movable block, and installed on the end of the movable block to exert a suction force by the pneumatic pressure to suck the stub shaft inserted into the test hole of the test probe to the inspection unit According to the inspection result of the product discharge conveyor or defective product characterized in that consisting of a separation chuck to discharge to the discharge conveyor.
  • the present invention by the above configuration can be expected the following effects.
  • the high frequency heat treatment of the stub shaft in an automated manner can increase the productivity of the stub shaft. And after the high frequency heat treatment, the whole inspection of the stub shaft is performed in an automated manner, and by separating the good and bad according to the result of the total inspection, it is possible to suppress the incorporation of the defective product and improve the heat treatment quality.
  • FIG. 1 is an overall configuration diagram showing a high frequency heat treatment apparatus of a stub shaft having a full inspection function of the eddy current flaw detection method according to a preferred embodiment of the present invention.
  • the high frequency heat treatment apparatus of the stub shaft having the full inspection function of the eddy current flaw detection method according to the present invention is a high frequency quenching and tempering of the stub shaft (stub shaft) which is one of the key components constituting the drive shaft for transmitting the rotational force of the vehicle engine to the axle It is an apparatus for performing a high frequency heat treatment including an automated system.
  • the high frequency heat treatment apparatus of the stub shaft having a full inspection function of the eddy current inspection method according to the present invention after the high frequency heat treatment and taking out the stub shaft and inspecting whether the high frequency heat treatment is performed properly, separated and discharged as good or bad according to the test result
  • the incorporation of defective products can be suppressed as much as possible, and the whole inspection for filtering out defective products can be easily performed.
  • This feature is characterized by the structure provided with an inspection part for inspecting the high frequency heat treatment quality of the stub shaft that has been subjected to the high frequency heat treatment by the vortex flaw detection method on one side of the ejection part, and a separation part for separating and discharging the stub shaft into good and defective parts according to the inspection result of the inspection part. Is achieved.
  • the high frequency heat treatment apparatus 100 of the stub shaft having the full inspection function of the eddy current inspection method according to the preferred embodiment of the present invention is provided with a supply part 10, an input part 20, and a transfer part 30. It is composed of a high frequency heat treatment unit 40, the extraction unit 50, the inspection unit 60 and the separation unit 70.
  • the supply unit 10 is a device for feeding a plurality of stub shafts that are placed at regular intervals in a standing state at a predetermined distance to be transferred at a predetermined time interval.
  • the supply unit 10 may be configured as a supply conveyor 11 as shown in FIG.
  • the supply conveyor 11 transfers and supplies a plurality of stub shafts which are placed in an upright position by an operator while moving in an endless track.
  • the upper portion of the supply conveyor 11 is provided with a position guide (not shown) indicating the set position at every predetermined interval so that the operator can set up the stub shaft standing at a predetermined interval.
  • the feeding unit 20 is configured to feed the stub shaft supplied from the supply unit 10 to the transfer unit 30 to be described later.
  • the input unit 20 may be composed of a movable block 21 and the input chuck 22 as shown in FIG.
  • the movable block 21 is installed on one side of the supply conveyor 11 and configured to move horizontally and vertically by a driving means (not shown).
  • the input chuck 22 is installed at the end of the movable block 21 to suck the stub shaft by the pneumatic pressure supplied from the outside.
  • the input unit 20 is the movable block 21 is moved horizontally and vertically, and the input chuck 22 is standing up one by one to the stub shaft to be supplied at regular intervals along the supply conveyor 11 by the suction operation It is adsorbed in a state to be introduced into the transfer unit 30 to be described later.
  • the transfer unit 30 is for transferring a stub shaft inserted by the input unit 20 at a predetermined time interval. That is, the transfer unit 30 is to transfer the high frequency heat treatment including high frequency quenching and high frequency tempering to the stub shaft in order.
  • the transfer unit 30 may be composed of a work table 31, the transfer table 32 and the transfer jig 33 as shown in FIG.
  • the work table 31 is installed on one side of the supply conveyor 10 is to be placed in the upper stub shaft is introduced by the input unit 20.
  • the transfer table 32 is installed parallel to the rear side of the work table 31 and configured to horizontally move left and right and back and forth with respect to the work table 31.
  • the transfer jig 33 is provided with a plurality of dogs on one side of the transfer table 32 at regular intervals to hold the stub shaft according to the operation of the cylinder (not shown).
  • the transfer part 30 is in a state in which the transfer table 32 stands up on one side of the work table 31 in the process of horizontally moving back and forth and left and right along the work table 31 and the transfer jig 33 grips the stub shaft.
  • the stub shaft to be placed is transported to move by a certain distance toward the other side of the work table 31 every predetermined time.
  • the high frequency heat treatment unit 40 is configured to heat-treat the stub shaft transferred by the transfer unit 30. That is, the high frequency heat treatment unit 40 performs high frequency tempering after high frequency quenching of the stub shaft which is sequentially transferred.
  • the high frequency heat treatment unit 40 includes a first induction coil 41 and a second induction coil 42, a first cooling nozzle (not shown) and a second cooling nozzle (not shown), as shown in FIG. It may be composed of a high frequency generator 43, the first compact piece 44 and the second compact piece 45.
  • the first induction coil 41 and the second induction coil 42 are installed at a predetermined distance on the upper side of the worktable 31, respectively, and are disposed at intervals corresponding to the installation intervals of the transfer jig 33, respectively. High frequency heat treatment and high frequency tempering are performed on the stub shaft which is conveyed to the position.
  • the high frequency generator 43 is electrically connected to the first induction coil 41 and the second induction coil 42 to generate a high frequency necessary for high frequency heat treatment and tempering, thereby inducing the first induction coil 41 and the second induction coil. It is applied to (42).
  • the first cooling nozzle and the second cooling nozzle are respectively installed inside the first induction coil 41 and the second induction coil 42 to spray cooling water toward the sub shaft which is subjected to high frequency heat treatment and high frequency tempering. It is to let.
  • the first sealing piece 44 and the second sealing piece 45 are installed on the lower side of the work table 31, respectively, and are disposed to correspond to the installation positions of the first induction coil 41 and the second induction coil 42, respectively.
  • One motor 44a, 45a is connected to the rotational shaft of the second motors 44b, 45b provided on the guide members 44d, 45d to move up and down along the supporting members 44c, 45c. It is configured to be able to exercise.
  • first sealing piece 44 and the second sealing piece 45 may be in positions corresponding to the first guide coil 41 and the second guide coil 42 in the process of the stub shaft being transferred by the transfer part 30.
  • the stub shaft is pushed upward to be inserted into the first induction coil 41 and the second induction coil 42 to rotate to enable high frequency heat treatment and tempering.
  • the take-out unit 50 is to take out the stub shaft after the high frequency heat treatment through the high frequency heat treatment unit 40 in the process of being transferred along the work table 31 by the transfer unit 30 from the work table 31.
  • the takeout unit 50 may be composed of a movable block 51 and a takeout chuck 52 as shown in FIG.
  • the movable block 21 is installed on one side of the worktable 31 and configured to move horizontally and vertically by a driving means (not shown).
  • the extraction chuck 52 is installed at the end of the movable block 51 to suck the stub shaft by the pneumatic pressure supplied from the outside.
  • the take-out part 50 is in a state in which the movable block 51 moves horizontally and vertically, and the take-out chuck 52 stands up one by one in order to complete the high frequency heat treatment on the work table 31 by the suction operation. Adsorption is carried out to the inspection part 60 mentioned later.
  • the inspection unit 60 is configured to inspect the high frequency heat treatment state of the stub shaft taken out by the extraction unit 50.
  • the inspection unit 60 may be composed of a test bench 61, a test probe 62, a standard probe 63 and a discriminator 64 as shown in FIG.
  • the inspection table 61 is installed below the take-out jig 62 and has a flat plate shape.
  • the test probe 62 has an eddy current coil installed at one side of the test stand 61 and formed with a test hole (not shown) through which a stub shaft taken out by the takeout unit 50 is inserted in the center thereof, and an eddy current is supplied inside. (Not shown) is installed.
  • the standard probe 63 has an eddy current coil (not shown) installed in the other side of the inspection table 61 and having an inspection hole (not shown) through which a stub shaft of good quality is inserted into the center without a high frequency heat treatment defect in the center thereof, and an eddy current supplied thereto. Is installed.
  • the discriminator 64 is electrically connected to the test probe 62 and the standard probe 63, and compares the amplitudes of the eddy currents received from the test probe 62 and the standard probe 63, respectively. The high frequency heat treatment failure of the stub shaft taken out by this is discriminated.
  • the inspection unit 60 transmits eddy currents to the stub shaft to be inspected and the stub shaft to be the inspection standard of the test probe 62 and the standard probe 63, respectively, and then receives them from the discriminator 64. By comparing the amplitudes of the eddy currents with each other, it is determined whether the high frequency heat treatment of the stub shaft to be audited is performed properly.
  • the stub shaft to be inspected is determined as good or defective based on the stub shaft as the inspection standard, it is received from the stub shaft to be inspected based on the amplitude magnitude of the eddy current received from the stub shaft as the inspection standard. If the amplitude magnitude of the eddy current is within the preset allowable range, it is judged as good quality, otherwise it is determined as defective product.
  • the separation unit 70 is configured to separate and discharge the stub shaft inspected by the inspection unit 60 as good or bad according to the inspection result.
  • the separation unit 70 may be composed of a movable block 71 and a separation chuck 72 as shown in FIG.
  • the movable block 71 is installed on the upper side of the inspection table 61 and configured to be capable of horizontal and vertical movement by a driving means (not shown).
  • the separation chuck 72 is installed at the end of the movable block 71 and sucks the stub shaft by pneumatic pressure supplied from the outside.
  • the separation unit 70 is the stub shaft which is determined as good quality by moving the movable block 71 horizontally and vertically and the separation chuck 72 performs the suction operation is discharged to the good quality discharge conveyor 73 and determined as defective The stub shaft is discharged to the defective product discharge conveyor (84).
  • the present invention relates to a high frequency heat treatment apparatus for a stub shaft, and more particularly, an inspection unit for inspecting the high frequency heat treatment state of the stub shaft by an eddy current flaw detection method is installed on one side of the stub shaft, and the stub shaft according to the result of the inspection on one side of the inspection unit. It is available for the high frequency heat treatment device of the stub shaft which is equipped with the eddy current flaw detection system which can inspect the whole of the stub shaft and prevent the mixing of the defective product.

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Abstract

The present invention relates to an apparatus for the high-frequency heat treatment of stub shafts and, more specifically, to an apparatus for the high-frequency heat treatment of stub shafts, which has an eddy-current-testing total inspection function, has, installed at one side of an extraction unit, an inspection unit for inspecting the high-frequency heat treatment state of the stub shafts in an eddy current testing manner, and also has, installed at one side of the inspection unit, a separation unit for discharging the stub shafts by separating same into good-quality and defective products according to the result of the inspection, thereby allowing the total inspection of the stub shafts and preventing the inclusion of the defective products.

Description

와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치High frequency heat treatment device of stub shaft with full inspection function of eddy current inspection method
본 발명은 스터브 샤프트의 고주파 열처리 장치에 관한 것으로, 더욱 상세하게는 취출부의 일측에 스터브 샤프트의 고주파 열처리 상태를 와전류 탐상 방식으로 검사하는 검사부가 설치되고 검사부의 일측에 검사의 결과에 따라 스터브 샤프트를 양품과 불량품으로 분리 배출하는 분리부가 설치되어 스터브 샤프트의 전수 검사가 가능하고 불량품의 혼입을 방지할 수 있는 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치에 관한 것이다. The present invention relates to a high frequency heat treatment apparatus for a stub shaft, and more particularly, an inspection unit for inspecting the high frequency heat treatment state of the stub shaft by an eddy current flaw detection method is installed on one side of the stub shaft, and the stub shaft according to the result of the inspection on one side of the inspection unit. The present invention relates to a high-frequency heat treatment apparatus for stub shafts having an eddy current flaw detection system capable of inspecting the entire stub shaft and preventing the mixing of defective products.
일반적으로 스터브 샤프트(stub shaft)는 차량 엔진의 회전력을 차축으로 전달하는 드라이브 샤프트를 구성하는 부품 중의 하나이다. In general, a stub shaft is one of the components constituting the drive shaft that transmits the rotational force of the vehicle engine to the axle.
이러한 스터브 샤프트는 원판형의 플랜지부와, 플랜지부의 중심에 돌출 형성된 샤프트부로 이루어진 형태로서, 스플라인이 형성된 샤프트부에 의해 회전력이 전달됨에 따라 샤프트부의 내구성이 요구되는 부품이다. The stub shaft is formed of a disk-shaped flange portion and a shaft portion protruding from the center of the flange portion, and is a component requiring durability of the shaft portion as the rotational force is transmitted by the shaft portion on which the spline is formed.
이러한 내구성 요구에 만족하도록 스터브 샤프트의 샤프트부 표면 경도 증대를 위해 고주파 열처리가 필요한데, 이를 위한 종래의 스터브 샤프트의 고주파 열처리 장치는 스터브 샤프트를 연속적으로 공급 이송하면서 한 개씩 개별적으로 고주파 열처리하고 취출하는 구조이다. High frequency heat treatment is required to increase the surface hardness of the shaft portion of the stub shaft to satisfy the durability requirements, and the conventional high frequency heat treatment apparatus of the stub shaft has a structure in which high frequency heat treatment and taking out each one separately while continuously feeding and feeding the stub shaft. to be.
그러나 종래의 고주파 열처리 장치는 스터브 샤프트를 고주파 열처리하고 취출한 후에는 고주파 열처리가 제대로 되어 있는지를 검사하지 않고 그대로 배출컨베이어로 배출함에 따라 양품과 불량품이 혼입되는 문제점이 있다. However, the conventional high frequency heat treatment apparatus has a problem in that good quality and poor quality are mixed as it is discharged to the discharge conveyor without inspecting whether the high frequency heat treatment is properly performed after the high frequency heat treatment and taking out the stub shaft.
그리고 혼입된 양품과 불량품에 대한 전수 검사를 위해서는 배출컨베이어를 따라 배출되는 스터브 샤프트를 다시 한 개씩 일일이 검사해야 하므로 경제적으로 비효율적이고 시간도 많이 소요되는 문제점도 있다.In addition, in order to perform a full inspection of the mixed goods and defectives, there is a problem that it is economically inefficient and time-consuming because it needs to inspect the stub shafts discharged one by one again along the discharge conveyor.
본 발명은 상기한 문제점을 해소하기 위해 발명된 것으로서, 고주파 열처리된 스터브 샤프트를 취출하여 배출할 때 비파괴 검사인 와전류 탐상 방식으로 고주파 열처리 품질을 검사하여 양품과 불량품으로 분리 배출하여 불량품의 혼입을 억제할 수 있고 전수 검사를 신속 용이하게 할 수 있는 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치를 제공하는데 그 목적이 있다.The present invention has been invented to solve the above problems, and when the high frequency heat treatment stub shaft is taken out and discharged, the high frequency heat treatment quality is inspected by the eddy current flaw detection method, which is a non-destructive test, to separate and discharge the defective product into the good and defective parts. It is an object of the present invention to provide a high frequency heat treatment apparatus for a stub shaft that has an eddy current flaw detection system capable of performing a full inspection quickly and easily.
본 발명의 목적은 이상에서 언급한 목적으로 제한되지 않으며, 언급되지 않은 또 다른 목적들은 아래의 기재로부터 명확하게 이해될 수 있을 것이다.The object of the present invention is not limited to the above-mentioned object, and other objects which are not mentioned will be clearly understood from the following description.
상기 목적을 달성하기 위한 본 발명에 따른 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치는 공급컨베이어로 이루어져 스터브 샤프트를 수직으로 기립시킨 상태로 공급하는 공급부; 상기 공급컨베이어의 상측에 설치되어 수직 및 수평 운동하는 가동블록과, 상기 가동블럭의 단부에 설치되고 공압에 의해 흡착력을 발휘하는 투입척으로 이루어져 상기 공급부에서 공급되는 상기 스터브 샤프트를 투입하는 투입부; 상기 공급컨베이어의 일측에 설치되는 작업대와, 상기 작업대의 후측에 평행하게 설치되고 좌우 및 전후로 수평 운동하는 이송대와, 상기 이송대의 일측에 복수 개가 일정간격으로 설치되며 상기 스터브 샤프트를 파지하는 이송지그로 이루어져 상기 투입부에 의해 상기 작업대의 상부로 투입된 상기 스터브 샤프트를 일정간격으로 이송하는 이송부; 상기 작업대의 상측에 일정거리를 두고 각각 설치되고 상호 간에 상기 이송지그의 간격과 대응되는 간격으로 배치되는 제1유도코일과 제2유도코일과, 상기 제1유도코일과 상기 제2유도코일의 내측에 각각 설치되는 제1냉각노즐과 제2냉각노즐과, 상기 제1유도코일과 상기 제2유도코일에 고주파를 인가하는 고주파발생기와, 상기 작업대의 하측에 설치되고 상기 제1유도코일과 상기 제2유도코일과 대응되는 위치에 배치되며 상기 작업대를 관통하여 상부로 돌출되어 회전 운동하는 제1밀편과 제2밀편으로 이루어져 상기 이송부에 의해 상기 작업대를 따라 이송되는 상기 스터브 샤프트를 상기 제1밀편과 제2밀편으로 승강시키면서 고주파 담금질과 템퍼링을 차례대로 행하는 고주파열처리부; 상기 작업대의 일측에 설치되어 수직 및 수평 운동하는 가동블록과, 상기 가동블럭의 단부에 설치되어 공압에 의해 흡착력을 발휘하는 취출척으로 이루어져 상기 고주파열처리부에서 고주파 열처리 완료된 상기 스터브 샤프트를 취출하는 취출부; 상기 취출부의 하측에 설치되어 상기 취출부에 의해 취출된 상기 스터브 샤프트에 와전류를 흘려 고주파 열처리 결함을 검사하는 검사부; 및 상기 검사부의 상측에 설치되어 상기 검사부의 검사 결과에 따라 상기 스터브 샤프트를 양품과 불량품으로 분리시켜 배출하는 분리부;로 구성되는 것을 특징으로 한다. The high frequency heat treatment apparatus of the stub shaft having a full inspection function of the eddy current flaw detection method according to the present invention for achieving the above object is made of a supply conveyor for supplying the stub shaft in a vertical standing state; An input unit for inputting the stub shaft supplied from the supply unit, comprising an input block installed at an upper side of the supply conveyor to move vertically and horizontally and an input chuck installed at an end of the movable block and exerting an attraction force by pneumatic pressure; A worktable installed on one side of the supply conveyor, a transport table installed parallel to the rear side of the work bench and horizontally moving from side to side and back and forth, and a plurality of transport jigs installed on one side of the transport table at regular intervals and holding the stub shaft. Conveying portion for conveying the stub shaft injected into the upper portion of the work table by the input portion at a predetermined interval; The first induction coil and the second induction coil, which are installed at a predetermined distance on the upper side of the work table and are arranged at intervals corresponding to the interval of the transfer jig, and the inner side of the first induction coil and the second induction coil, respectively. A first cooling nozzle and a second cooling nozzle respectively installed in the high frequency generator for applying a high frequency to the first induction coil and the second induction coil, a lower side of the work table, and the first induction coil and the first The first mill piece and the stub shaft disposed in a position corresponding to the two induction coil and consisting of a first mill piece and a second mill piece to protrude upwardly through the work table and rotated along the work table by the conveying unit. A high frequency heat treatment unit which performs high frequency quenching and tempering in order while raising and lowering the second compact piece; A movable block installed on one side of the work bench and vertically and horizontally moved; and a blowout chuck installed at an end of the movable block to exert an attraction force by pneumatic pressure. part; An inspection unit provided below the extraction unit and inspecting a high frequency heat treatment defect by flowing an eddy current through the stub shaft taken out by the extraction unit; And a separating part installed at an upper side of the inspection part and separating and discharging the stub shaft into good and defective goods according to the inspection result of the inspection part.
상기 검사부는 검사대와, 상기 검사대의 일측에 설치되고 중심에 상기 스터브 샤프트가 삽입되는 검사홀이 관통 형성되며 상기 검사홀을 따라 내측에 와전류가 공급되는 와전류코일이 설치되어 상기 스터브 샤프트에 와전류를 송수하는 시험탐촉자와, 상기 검사대의 타측에 설치되고 중심에 고주파 열처리 결함이 없는 양품의 스터브 샤프트가 삽입되는 검사홀이 관통 형성되고 상기 검사홀을 따라 내측에 와전류가 공급되는 와전류코일이 설치되어 상기 양품의 스터브 샤프트에 와전류를 송수하는 표준탐촉자와, 상기 시험탐촉자와 상기 표준탐촉자에서 각각 수신된 와전류의 진폭을 비교하여 상기 스터브 샤프트의 고주파 열처리 불량을 판별하는 판별기로 이루어지는 것을 특징으로 한다.The inspection unit is provided with an inspection table, and an inspection hole through which the stub shaft is inserted in the center of the inspection table and inserted into the center thereof, and an eddy current coil installed with an eddy current supplied inside the inspection hole to transmit the eddy current to the stub shaft. And a test probe to be installed on the other side of the test stand and a test hole through which a stub shaft of a good product is inserted in the center of which there is no high-frequency heat-treatment defect, and an eddy current coil in which an eddy current is supplied inside the test hole is installed. And a discriminator for discriminating high frequency heat treatment defects of the stub shaft by comparing the amplitude of the eddy current received from the test probe and the standard probe, respectively.
상기 분리부는 상기 검사대의 상측에 설치되어 수평 및 수직 운동하는 가동블록과, 상기 가동블록의 단부에 설치되고 공압에 의해 흡착력을 발휘하여 상기 시험탐촉자의 검사홀에 삽입된 스터브 샤프트를 흡착시켜 상기 검사부의 검사 결과에 따라 양품배출컨베이어 또는 불량품배출컨베이어로 분리 배출하는 분리척으로 이루어지는 것을 특징으로 한다.The separation unit is installed on the upper side of the test table and horizontal and vertical movement of the movable block, and installed on the end of the movable block to exert a suction force by the pneumatic pressure to suck the stub shaft inserted into the test hole of the test probe to the inspection unit According to the inspection result of the product discharge conveyor or defective product characterized in that consisting of a separation chuck to discharge to the discharge conveyor.
상기한 구성에 의한 본 발명은 아래와 같은 효과들을 기대할 수 있다. The present invention by the above configuration can be expected the following effects.
먼저, 스터브 샤프트를 자동화 방식으로 고주파 열처리함으로써 스터브 샤프트의 생산성을 높일 수 있다. 그리고 고주파 열처리 후 스터브 샤프트에 대한 전수 검사가 자동화 방식으로 행해지고 전수 검사 결과에 따라 양품과 불량품을 분리함으로써 불량품의 혼입을 억제하고 열처리 품질도 향상시킬 수 있다. First, the high frequency heat treatment of the stub shaft in an automated manner can increase the productivity of the stub shaft. And after the high frequency heat treatment, the whole inspection of the stub shaft is performed in an automated manner, and by separating the good and bad according to the result of the total inspection, it is possible to suppress the incorporation of the defective product and improve the heat treatment quality.
도 1은 본 발명의 바람직한 실시예에 따른 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치를 도시한 전체 구성도. 1 is an overall configuration diagram showing a high frequency heat treatment apparatus of a stub shaft having a full inspection function of the eddy current flaw detection method according to a preferred embodiment of the present invention.
본 발명에 따른 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치는 차량 엔진의 회전력을 차축으로 전달하는 드라이브 샤프트를 이루는 핵심 부품 중의 하나인 스터브 샤프트(stub shaft)를 고주파 담금질 및 템퍼링을 포함하는 고주파 열처리를 자동화 방식을 행하기 위한 장치이다.The high frequency heat treatment apparatus of the stub shaft having the full inspection function of the eddy current flaw detection method according to the present invention is a high frequency quenching and tempering of the stub shaft (stub shaft) which is one of the key components constituting the drive shaft for transmitting the rotational force of the vehicle engine to the axle It is an apparatus for performing a high frequency heat treatment including an automated system.
특히, 본 발명에 따른 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치는 스터브 샤프트를 고주파 열처리하고 취출한 후 고주파 열처리가 제대로 되어 있는지를 검사하여 검사 결과에 따라 양품과 불량품으로 분리 배출함으로써 불량품의 혼입을 최대한 억제할 수 있고 불량품을 걸러내는 전수 검사를 신속 용이하게 할 수 있는 것이 특징이다. In particular, the high frequency heat treatment apparatus of the stub shaft having a full inspection function of the eddy current inspection method according to the present invention after the high frequency heat treatment and taking out the stub shaft and inspecting whether the high frequency heat treatment is performed properly, separated and discharged as good or bad according to the test result As a result, the incorporation of defective products can be suppressed as much as possible, and the whole inspection for filtering out defective products can be easily performed.
이러한 특징은 취출부의 일측에 고주파 열처리가 완료된 스터브 샤프트의 고주파 열처리 품질을 와류 탐상 방식으로 검사하는 검사부와, 검사부의 검사 결과에 따라 스터브 샤프트를 양품과 불량품으로 분리 배출하는 분리부가 구비된 구조에 의해 달성된다. This feature is characterized by the structure provided with an inspection part for inspecting the high frequency heat treatment quality of the stub shaft that has been subjected to the high frequency heat treatment by the vortex flaw detection method on one side of the ejection part, and a separation part for separating and discharging the stub shaft into good and defective parts according to the inspection result of the inspection part. Is achieved.
이하 본 발명의 바람직한 실시예에 따른 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치를 첨부한 도면을 참조하여 상세하게 설명하면 다음과 같다. Hereinafter, with reference to the accompanying drawings, a high frequency heat treatment apparatus for a stub shaft having a full inspection function of the eddy current flaw detection method according to a preferred embodiment of the present invention will be described in detail.
본 발명의 바람직한 실시예에 따른 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치(100)는 도 1에 도시된 바와 같이 공급부(10)와 투입부(20)와 이송부(30)와 고주파열처리부(40)와 취출부(50)와 검사부(60) 및 분리부(70)로 구성된다. As shown in FIG. 1, the high frequency heat treatment apparatus 100 of the stub shaft having the full inspection function of the eddy current inspection method according to the preferred embodiment of the present invention is provided with a supply part 10, an input part 20, and a transfer part 30. It is composed of a high frequency heat treatment unit 40, the extraction unit 50, the inspection unit 60 and the separation unit 70.
먼저, 상기 공급부(10)는 상부에 기립 상태로 일정간격으로 안치되는 복수 개의 스터브 샤프트를 일정시간 간격으로 일정거리 이송시켜 공급하는 장치이다. First, the supply unit 10 is a device for feeding a plurality of stub shafts that are placed at regular intervals in a standing state at a predetermined distance to be transferred at a predetermined time interval.
이를 위해 공급부(10)는 도 1에 도시된 바와 같이 공급컨베이어(11)로 구성될 수 있다. To this end, the supply unit 10 may be configured as a supply conveyor 11 as shown in FIG.
상기 공급컨베이어(11)는 무한궤도로 운동하면서 작업자에 의해 상부에 기립된 상태로 안치된 복수 개의 스터브 샤프트를 이송 공급하는 것이다. The supply conveyor 11 transfers and supplies a plurality of stub shafts which are placed in an upright position by an operator while moving in an endless track.
이때 공급컨베이어(11)의 상부에는 작업자가 스터브 샤프트를 일정간격을 두고 기립 안치할 수 있도록 일정간격마다 안치위치를 나타내는 위치안내부(미도시)가 구비되는 것이 바람직하다. At this time, it is preferable that the upper portion of the supply conveyor 11 is provided with a position guide (not shown) indicating the set position at every predetermined interval so that the operator can set up the stub shaft standing at a predetermined interval.
다음으로, 상기 투입부(20)는 공급부(10)에서 공급되는 스터브 샤프트를 후술할 이송부(30)로 투입하는 구성이다. Next, the feeding unit 20 is configured to feed the stub shaft supplied from the supply unit 10 to the transfer unit 30 to be described later.
이를 위해 투입부(20)는 도 1에 도시된 바와 같이 가동블록(21)과 투입척(22)으로 구성될 수 있다. To this end, the input unit 20 may be composed of a movable block 21 and the input chuck 22 as shown in FIG.
상기 가동블록(21)은 공급컨베이어(11)의 일측 상부에 설치되고 구동수단(미도시)에 의해 수평 및 수직 운동하도록 구성된 것이다.The movable block 21 is installed on one side of the supply conveyor 11 and configured to move horizontally and vertically by a driving means (not shown).
상기 투입척(22)은 가동블록(21)의 단부에 설치되고 외부에서 공급되는 공압에 의해 스터브 샤프트를 흡착시키는 것이다. The input chuck 22 is installed at the end of the movable block 21 to suck the stub shaft by the pneumatic pressure supplied from the outside.
즉, 투입부(20)는 가동블록(21)이 수평 및 수직 운동하고 투입척(22)이 흡착 동작에 의해 공급컨베이어(11)를 따라 일정간격으로 공급되는 스터브 샤프트를 한 개씩 차례대로 기립된 상태로 흡착시켜 후술할 이송부(30)로 투입하게 된다. That is, the input unit 20 is the movable block 21 is moved horizontally and vertically, and the input chuck 22 is standing up one by one to the stub shaft to be supplied at regular intervals along the supply conveyor 11 by the suction operation It is adsorbed in a state to be introduced into the transfer unit 30 to be described later.
다음으로, 상기 이송부(30)는 투입부(20)에 의해 투입된 스터브 샤프트를 일정시간 간격으로 일정거리 이송시키기 위한 것이다. 즉, 이송부(30)는 스터브 샤프트에 대하여 고주파 담금질과 고주파 템퍼링을 포함하는 고주파 열처리가 차례대로 이루어질 수 있도록 이송하는 것이다. Next, the transfer unit 30 is for transferring a stub shaft inserted by the input unit 20 at a predetermined time interval. That is, the transfer unit 30 is to transfer the high frequency heat treatment including high frequency quenching and high frequency tempering to the stub shaft in order.
이를 위해 이송부(30)는 도 1에 도시된 바와 같이 작업대(31)와 이송대(32)와 이송지그(33)로 구성될 수 있다. To this end, the transfer unit 30 may be composed of a work table 31, the transfer table 32 and the transfer jig 33 as shown in FIG.
상기 작업대(31)는 공급컨베이어(10)의 일측에 설치되어 투입부(20)에 의해 투입되는 스터브 샤프트가 상부에 안치되는 것이다. The work table 31 is installed on one side of the supply conveyor 10 is to be placed in the upper stub shaft is introduced by the input unit 20.
상기 이송대(32)는 작업대(31)의 후측에 평행하게 설치되고 작업대(31)를 기준으로 좌우 및 전후로 수평 운동하도록 구성된 것이다. The transfer table 32 is installed parallel to the rear side of the work table 31 and configured to horizontally move left and right and back and forth with respect to the work table 31.
상기 이송지그(33)는 이송대(32)의 일측에 복수 개가 일정간격으로 설치되어 실린더(미도시)의 작동에 따라 스터브 샤프트를 파지하는 동작을 하는 것이다. The transfer jig 33 is provided with a plurality of dogs on one side of the transfer table 32 at regular intervals to hold the stub shaft according to the operation of the cylinder (not shown).
즉, 이송부(30)는 이송대(32)가 작업대(31)를 따라 전후 및 좌우로 수평 이동하고 이송지그(33)가 스터브 샤프트를 파지하는 과정에서 작업대(31)의 일측에 기립된 상태로 안치되는 스터브 샤프트가 일정시간마다 작업대(31)의 타측을 향하여 일정거리만큼 이동하도록 이송하게 된다. That is, the transfer part 30 is in a state in which the transfer table 32 stands up on one side of the work table 31 in the process of horizontally moving back and forth and left and right along the work table 31 and the transfer jig 33 grips the stub shaft. The stub shaft to be placed is transported to move by a certain distance toward the other side of the work table 31 every predetermined time.
다음으로, 상기 고주파열처리부(40)는 이송부(30)에 의해 이송되는 스터브 샤프트를 열처리하는 구성이다. 즉, 고주파열처리부(40)는 차례대로 이송되는 스터브 샤프트를 고주파 담금질한 후 고주파 템퍼링을 하는 것이다. Next, the high frequency heat treatment unit 40 is configured to heat-treat the stub shaft transferred by the transfer unit 30. That is, the high frequency heat treatment unit 40 performs high frequency tempering after high frequency quenching of the stub shaft which is sequentially transferred.
이를 위해 고주파열처리부(40)는 도 1에 도시된 바와 같이 제1유도코일(41)과 제2유도코일(42), 제1냉각노즐(미도시)과 제2냉각노즐(미도시), 고주파발생기(43), 제1밀편(44)과 제2밀편(45)으로 구성될 수 있다. To this end, the high frequency heat treatment unit 40 includes a first induction coil 41 and a second induction coil 42, a first cooling nozzle (not shown) and a second cooling nozzle (not shown), as shown in FIG. It may be composed of a high frequency generator 43, the first compact piece 44 and the second compact piece 45.
상기 제1유도코일(41)과 제2유도코일(42)은 작업대(31)의 상측에 일정거리를 두고 각각 설치되되 상호 간에 이송지그(33)의 설치간격과 대응되는 간격으로 배치되어 해당 설치 위치로 이송되는 스터브 샤프트에 대하여 고주파 열처리와 고주파 템퍼링을 행하는 것이다. The first induction coil 41 and the second induction coil 42 are installed at a predetermined distance on the upper side of the worktable 31, respectively, and are disposed at intervals corresponding to the installation intervals of the transfer jig 33, respectively. High frequency heat treatment and high frequency tempering are performed on the stub shaft which is conveyed to the position.
상기 고주파발생기(43)는 제1유도코일(41)과 제2유도코일(42)에 전기적으로 연결되어 고주파 열처리 및 템퍼링을 위해 필요한 고주파를 발생시켜 제1유도코일(41)과 제2유도코일(42)에 인가하는 것이다. The high frequency generator 43 is electrically connected to the first induction coil 41 and the second induction coil 42 to generate a high frequency necessary for high frequency heat treatment and tempering, thereby inducing the first induction coil 41 and the second induction coil. It is applied to (42).
상기 제1냉각노즐과 제2냉각노즐은 제1유도코일(41)과 상기 제2유도코일(42)의 내측에 각각 설치되어 고주파 열처리와 고주파 템퍼링이 이루어지는 서터브 샤프트를 향하여 냉각수를 분사하여 냉각시키는 것이다. The first cooling nozzle and the second cooling nozzle are respectively installed inside the first induction coil 41 and the second induction coil 42 to spray cooling water toward the sub shaft which is subjected to high frequency heat treatment and high frequency tempering. It is to let.
상기 제1밀편(44)과 제2밀편(45)은 작업대(31)의 하측에 각각 설치되되 제1유도코일(41)과 제2유도코일(42)의 설치위치에 각각 대응되게 배치되며 제1모터(44a)(45a)에 의해 지지부재(44c)(45c)를 따라 승강하는 가이드부재(44d)(45d)에 설치된 제2모터(44b)(45b)의 회전축에 연결되어 승강 운동 및 회전 운동 가능하게 구성된 것이다. The first sealing piece 44 and the second sealing piece 45 are installed on the lower side of the work table 31, respectively, and are disposed to correspond to the installation positions of the first induction coil 41 and the second induction coil 42, respectively. One motor 44a, 45a is connected to the rotational shaft of the second motors 44b, 45b provided on the guide members 44d, 45d to move up and down along the supporting members 44c, 45c. It is configured to be able to exercise.
즉, 제1밀편(44)과 제2밀편(45)은 스터브 샤프트가 이송부(30)에 의해 이송되는 과정에서 제1유도코일(41)과 제2유도코일(42)에 대응되는 위치에 있을 때 스터브 샤프트를 상방으로 밀어올려 제1유도코일(41)과 제2유도코일(42)의 내측으로 삽입되어 회전되도록 하여 고주파 열처리 및 템퍼링을 가능하게 하는 것이다. That is, the first sealing piece 44 and the second sealing piece 45 may be in positions corresponding to the first guide coil 41 and the second guide coil 42 in the process of the stub shaft being transferred by the transfer part 30. When the stub shaft is pushed upward to be inserted into the first induction coil 41 and the second induction coil 42 to rotate to enable high frequency heat treatment and tempering.
다음으로, 상기 취출부(50)는 이송부(30)에 의해 작업대(31)를 따라 이송되는 과정에서 고주파열처리부(40)를 통해 고주파 열처리를 마친 스터브 샤프트를 작업대(31)에서 취출하는 것이다. Next, the take-out unit 50 is to take out the stub shaft after the high frequency heat treatment through the high frequency heat treatment unit 40 in the process of being transferred along the work table 31 by the transfer unit 30 from the work table 31.
이를 위해 취출부(50)는 도 1에 도시된 바와 같이 가동블록(51)과 취출척(52)으로 구성될 수 있다. To this end, the takeout unit 50 may be composed of a movable block 51 and a takeout chuck 52 as shown in FIG.
상기 가동블록(21)은 작업대(31)의 일측 상부에 설치되고 구동수단(미도시)에 의해 수평 및 수직 운동하도록 구성된 것이다.The movable block 21 is installed on one side of the worktable 31 and configured to move horizontally and vertically by a driving means (not shown).
상기 취출척(52)은 가동블록(51)의 단부에 설치되고 외부에서 공급되는 공압에 의해 스터브 샤프트를 흡착시키는 것이다. The extraction chuck 52 is installed at the end of the movable block 51 to suck the stub shaft by the pneumatic pressure supplied from the outside.
즉, 취출부(50)는 가동블록(51)이 수평 및 수직 운동하고 취출척(52)이 흡착 동작에 의해 작업대(31)에서 고주파 열처리가 완료되는 스터브 샤프트를 한 개씩 차례대로 기립된 상태로 흡착시켜 후술할 검사부(60)로 취출하게 된다. That is, the take-out part 50 is in a state in which the movable block 51 moves horizontally and vertically, and the take-out chuck 52 stands up one by one in order to complete the high frequency heat treatment on the work table 31 by the suction operation. Adsorption is carried out to the inspection part 60 mentioned later.
다음으로, 상기 검사부(60)는 취출부(50)에 의해 취출된 스터브 샤프트의 고주파 열처리 상태를 검사하는 구성이다. Next, the inspection unit 60 is configured to inspect the high frequency heat treatment state of the stub shaft taken out by the extraction unit 50.
이를 위해 검사부(60)는 도 1에 도시된 바와 같이 검사대(61)와 시험탐촉자(62)와 표준탐촉자(63) 및 판별기(64)로 구성될 수 있다. To this end, the inspection unit 60 may be composed of a test bench 61, a test probe 62, a standard probe 63 and a discriminator 64 as shown in FIG.
상기 검사대(61)는 취출지그(62)의 하측에 설치되고 평판 형태를 가진 것이다. The inspection table 61 is installed below the take-out jig 62 and has a flat plate shape.
상기 시험탐촉자(62)는 검사대(61)의 일측에 설치되고 중심에 취출부(50)에 의해 취출된 스터브 샤프트가 삽입되는 검사홀(미도시)이 관통 형성되며 내측에 와전류가 공급되는 와전류코일(미도시)이 설치된 것이다. The test probe 62 has an eddy current coil installed at one side of the test stand 61 and formed with a test hole (not shown) through which a stub shaft taken out by the takeout unit 50 is inserted in the center thereof, and an eddy current is supplied inside. (Not shown) is installed.
상기 표준탐촉자(63)는 검사대(61)의 타측에 설치되고 중심에 고주파 열처리 결함이 없는 양품의 스터브 샤프트가 삽입되는 검사홀(미도시)이 관통 형성되고 내측에 와전류가 공급되는 와전류코일(미도시)이 설치된 것이다. The standard probe 63 has an eddy current coil (not shown) installed in the other side of the inspection table 61 and having an inspection hole (not shown) through which a stub shaft of good quality is inserted into the center without a high frequency heat treatment defect in the center thereof, and an eddy current supplied thereto. Is installed.
상기 판별기(64)는 시험탐촉자(62)와 표준탐촉자(63)에 전기적으로 연결되어 시험탐촉자(62)와 표준탐촉자(63)에서 각각 수신되는 와전류의 진폭을 상호 비교하여 취출부(50)에 의해 취출된 스터브 샤프트의 고주파 열처리 불량을 판별하는 것이다. The discriminator 64 is electrically connected to the test probe 62 and the standard probe 63, and compares the amplitudes of the eddy currents received from the test probe 62 and the standard probe 63, respectively. The high frequency heat treatment failure of the stub shaft taken out by this is discriminated.
즉, 검사부(60)는 시험탐촉자(62)와 표준탐촉자(63)에서 각각 검사 대상이 되는 스터브 샤프트와 검사 기준이 되는 양품의 스터브 샤프트에 와전류를 송수한 후 이를 각각 판별기(64)에서 수신하여 와전류의 진폭을 상호 비교함으로써 감사 대상이 되는 스터브 샤프트의 고주파 열처리가 제대로 된 것인지를 판별하게 된다. That is, the inspection unit 60 transmits eddy currents to the stub shaft to be inspected and the stub shaft to be the inspection standard of the test probe 62 and the standard probe 63, respectively, and then receives them from the discriminator 64. By comparing the amplitudes of the eddy currents with each other, it is determined whether the high frequency heat treatment of the stub shaft to be audited is performed properly.
이때 검사 기준이 되는 스터브 샤프트를 기준으로 검사 대상이 되는 스터브 샤프트를 양품과 불량품으로 판별할 때는 검사 기준이 되는 스터브 샤프트로부터 수신한 와전류에 대한 진폭 크기를 기준으로 검사 대상이 되는스터브 샤프트로부터 수신한 와전류에 대한 진폭 크기가 기설정된 허용 범위 이내이면 양품으로 판별하고 그렇지 않으면 불량품으로 판별한다. At this time, when the stub shaft to be inspected is determined as good or defective based on the stub shaft as the inspection standard, it is received from the stub shaft to be inspected based on the amplitude magnitude of the eddy current received from the stub shaft as the inspection standard. If the amplitude magnitude of the eddy current is within the preset allowable range, it is judged as good quality, otherwise it is determined as defective product.
마지막으로, 상기 분리부(70)는 검사부(60)에서 검사 완료된 스터브 샤프트를 검사 결과에 따라 양품과 불량품으로 분리 배출하는 구성이다. Finally, the separation unit 70 is configured to separate and discharge the stub shaft inspected by the inspection unit 60 as good or bad according to the inspection result.
이를 위해 분리부(70)는 도 1에 도시된 바와 같이 가동블록(71)과 분리척(72)으로 구성될 수 있다. To this end, the separation unit 70 may be composed of a movable block 71 and a separation chuck 72 as shown in FIG.
상기 가동블록(71)은 검사대(61)의 상측에 설치되고 구동수단(미도시)에 의해 수평 및 수직 운동 가능하게 구성된 것이다. The movable block 71 is installed on the upper side of the inspection table 61 and configured to be capable of horizontal and vertical movement by a driving means (not shown).
상기 분리척(72)은 가동블록(71)의 단부에 설치되고 외부에서 공급되는 공압에 의해 스터브 샤프트를 흡착시키는 것이다. The separation chuck 72 is installed at the end of the movable block 71 and sucks the stub shaft by pneumatic pressure supplied from the outside.
즉, 분리부(70)는 가동블록(71)이 수평 및 수직 운동하고 분리척(72)이 흡착 동작을 행함으로써 양품으로 판별된 스터브 샤프트는 양품배출컨베이어(73)로 배출하고 불량품으로 판별된 스터브 샤프트는 불량품배출컨베이어(84)로 배출하게 된다. That is, the separation unit 70 is the stub shaft which is determined as good quality by moving the movable block 71 horizontally and vertically and the separation chuck 72 performs the suction operation is discharged to the good quality discharge conveyor 73 and determined as defective The stub shaft is discharged to the defective product discharge conveyor (84).
상기한 실시예는 예시적인 것에 불과한 것으로, 당해 기술분야에 대한 통상의 지식을 가진 자라면 이로부터 다양하게 변형된 다른 실시예가 가능하다. The above embodiments are merely exemplary, and those having ordinary skill in the art may have other embodiments modified in various ways.
따라서 본 발명의 진정한 기술적 보호범위에는 하기의 특허청구범위에 기재된 발명의 기술적 사상에 의해 상기의 실시예뿐만 아니라 다양하게 변형된 다른 실시예가 포함되어야 한다.Therefore, the true technical protection scope of the present invention should include not only the above embodiment but also various other embodiments modified by the technical spirit of the invention described in the claims below.
본 발명은 스터브 샤프트의 고주파 열처리 장치에 관한 것으로, 더욱 상세하게는 취출부의 일측에 스터브 샤프트의 고주파 열처리 상태를 와전류 탐상 방식으로 검사하는 검사부가 설치되고 검사부의 일측에 검사의 결과에 따라 스터브 샤프트를 양품과 불량품으로 분리 배출하는 분리부가 설치되어 스터브 샤프트의 전수 검사가 가능하고 불량품의 혼입을 방지할 수 있는 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치 분야에 이용가능하다.The present invention relates to a high frequency heat treatment apparatus for a stub shaft, and more particularly, an inspection unit for inspecting the high frequency heat treatment state of the stub shaft by an eddy current flaw detection method is installed on one side of the stub shaft, and the stub shaft according to the result of the inspection on one side of the inspection unit. It is available for the high frequency heat treatment device of the stub shaft which is equipped with the eddy current flaw detection system which can inspect the whole of the stub shaft and prevent the mixing of the defective product.

Claims (3)

  1. 공급컨베이어(11)로 이루어져 스터브 샤프트를 수직으로 기립시킨 상태로 공급하는 공급부(10);A supply unit 10 configured to supply a supply conveyor 11 to supply the stub shaft in a vertically standing state;
    상기 공급컨베이어(11)의 상측에 설치되어 수직 및 수평 운동하는 가동블록(21)과, 상기 가동블럭(21)의 단부에 설치되고 공압에 의해 흡착력을 발휘하는 투입척(22)으로 이루어져 상기 공급부(10)에서 공급되는 상기 스터브 샤프트를 투입하는 투입부(20); The supply unit comprises a movable block 21 installed above the supply conveyor 11 to move vertically and horizontally, and an input chuck 22 installed at an end of the movable block 21 to exert a suction force by pneumatic pressure. An input unit 20 for inputting the stub shaft supplied from 10;
    상기 공급컨베이어(10)의 일측에 설치되는 작업대(31)와, 상기 작업대(31)의 후측에 평행하게 설치되고 좌우 및 전후로 수평 운동하는 이송대(32)와, 상기 이송대(32)의 일측에 복수 개가 일정간격으로 설치되며 상기 스터브 샤프트를 파지하는 이송지그(33)로 이루어져 상기 투입부(20)에 의해 상기 작업대(31)의 상부로 투입된 상기 스터브 샤프트를 일정간격으로 이송하는 이송부(30);A worktable 31 installed on one side of the supply conveyor 10, a feeder 32 installed in parallel to the rear side of the worktable 31, horizontally moving left and right and front and back, and one side of the feeder 32. A plurality of dogs are installed at regular intervals on the transfer jig 33 for holding the stub shaft to transfer the stub shaft introduced into the upper portion of the work table 31 by the input unit 20 at a predetermined interval (30) );
    상기 작업대(31)의 상측에 일정거리를 두고 각각 설치되고 상호 간에 상기 이송지그(33)의 간격과 대응되는 간격으로 배치되는 제1유도코일(41)과 제2유도코일(42)과, 상기 제1유도코일(41)과 상기 제2유도코일(42)의 내측에 각각 설치되는 제1냉각노즐(미도시)과 제2냉각노즐(미도시)과, 상기 제1유도코일(41)과 상기 제2유도코일(42)에 고주파를 인가하는 고주파발생기(43)와, 상기 작업대(31)의 하측에 설치되고 상기 제1유도코일(41)과 상기 제2유도코일(42)과 대응되는 위치에 배치되며 상기 작업대(31)를 관통하여 상부로 돌출되어 회전 운동하는 제1밀편(44)과 제2밀편(45)으로 이루어져 상기 이송부(30)에 의해 상기 작업대(31)를 따라 이송되는 상기 스터브 샤프트를 상기 제1밀편(44)과 제2밀편(45)으로 승강시키면서 고주파 담금질과 템퍼링을 차례대로 행하는 고주파열처리부(40); The first guide coil 41 and the second guide coil 42 which are installed at a predetermined distance on the upper side of the work table 31 and are disposed at intervals corresponding to the interval of the transfer jig 33 therebetween, A first cooling nozzle (not shown) and a second cooling nozzle (not shown) installed inside the first induction coil 41 and the second induction coil 42, and the first induction coil 41 and A high frequency generator 43 for applying a high frequency to the second induction coil 42 and a lower side of the work table 31 and corresponding to the first induction coil 41 and the second induction coil 42. It is disposed in the position and is projected upward through the work table 31 is composed of the first compact piece 44 and the second compact piece 45 to be transported along the work table 31 by the transfer unit 30 High pressure quenching and tempering are performed in order while elevating the stub shaft to the first compact piece 44 and the second compact piece 45. Heat treatment section (40);
    상기 작업대(31)의 일측에 설치되어 수직 및 수평 운동하는 가동블록(51)과, 상기 가동블럭(52)의 단부에 설치되어 공압에 의해 흡착력을 발휘하는 취출척(52)으로 이루어져 상기 고주파열처리부(40)에서 고주파 열처리 완료된 상기 스터브 샤프트를 취출하는 취출부(50);The high frequency heat treatment comprises a movable block 51 installed at one side of the work table 31 to move vertically and horizontally, and a blowout chuck 52 installed at an end of the movable block 52 to exert a suction force by pneumatic pressure. A take-out part 50 which takes out the stub shaft which has been subjected to the high frequency heat treatment in the part 40;
    상기 취출부(50)의 하측에 설치되어 상기 취출부(50)에 의해 취출된 상기 스터브 샤프트에 와전류를 흘려 고주파 열처리 결함을 검사하는 검사부(60); 및An inspection unit (60) installed below the blower unit (50) and inspecting a high frequency heat treatment defect by flowing an eddy current through the stub shaft taken out by the blower unit (50); And
    상기 검사부(60)의 상측에 설치되어 상기 검사부(60)의 검사 결과에 따라 상기 스터브 샤프트를 양품과 불량품으로 분리시켜 배출하는 분리부(70);로 구성되는 것을 특징으로 하는 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치.The separation unit 70 is installed on the upper side of the inspection unit 60 is separated according to the inspection result of the inspection unit 60 and discharged by separating the stub shaft into good and defective products; eddy current flaw detection method characterized in that consisting of High frequency heat treatment device of stub shaft with inspection function.
  2. 제1항에 있어서, The method of claim 1,
    상기 검사부(60)는The inspection unit 60
    검사대(61)와, 상기 검사대(61)의 일측에 설치되고 중심에 상기 스터브 샤프트가 삽입되는 검사홀(62a)이 관통 형성되며 상기 검사홀(미도시)을 따라 내측에 와전류가 공급되는 와전류코일(미도시)이 설치되어 상기 스터브 샤프트에 와전류를 송수하는 시험탐촉자(62)와, 상기 검사대(61)의 타측에 설치되고 중심에 고주파 열처리 결함이 없는 양품의 스터브 샤프트가 삽입되는 검사홀(미도시)이 관통 형성되고 상기 검사홀(63a)을 따라 내측에 와전류가 공급되는 와전류코일(미도시)이 설치되어 상기 양품의 스터브 샤프트에 와전류를 송수하는 표준탐촉자(63)와, 상기 시험탐촉자(62)와 상기 표준탐촉자(63)에서 각각 수신된 와전류의 진폭을 비교하여 상기 스터브 샤프트의 고주파 열처리 불량을 판별하는 판별기(64)로 이루어지는 것을 특징으로 하는 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치.An inspection table 61 and an eddy current coil installed at one side of the inspection table 61 and having an inspection hole 62a through which the stub shaft is inserted in the center are provided, and an eddy current is supplied inside the inspection hole (not shown). (Not shown) is provided with a test probe 62 for transmitting the eddy current to the stub shaft, and the inspection hole is installed on the other side of the test stand 61, the good quality stub shaft is inserted in the center without a high frequency heat treatment defect (not shown) And a standard probe (63) for transmitting eddy current to the stub shaft of the good and the test probe (the eddy current coil (not shown) is installed through the test hole (63a) and the eddy current is supplied inside). 62) and an eddy current probe comprising a discriminator (64) for comparing the amplitudes of the eddy currents received by the standard probe (63) to determine the high frequency heat treatment failure of the stub shaft. High frequency heat treatment device for stub shaft with phase inspection.
  3. 제1항에 있어서, The method of claim 1,
    상기 분리부(70)는 The separation unit 70
    상기 검사대(61)의 상측에 설치되어 수평 및 수직 운동하는 가동블록(71)과, 상기 가동블록(71)의 단부에 설치되고 공압에 의해 흡착력을 발휘하여 상기 시험탐촉자(62)의 검사홀에 삽입된 스터브 샤프트를 흡착시켜 상기 검사부(60)의 검사 결과에 따라 양품배출컨베이어(73) 또는 불량품배출컨베이어(74)로 분리 배출하는 분리척(72)으로 이루어지는 것을 특징으로 하는 와전류 탐상 방식의 전수 검사 기능을 겸비한 스터브 샤프트의 고주파 열처리 장치.The movable block 71 is installed on the upper side of the test stand 61 and moves horizontally and vertically, and is installed at the end of the movable block 71 and exerts an attraction force by pneumatic pressure to the test hole of the test probe 62. The eddy current flaw detection system comprises a separation chuck 72 which absorbs the inserted stub shaft and separates and discharges it into the good quality discharge conveyor 73 or the defective product discharge conveyor 74 according to the inspection result of the inspection unit 60. High frequency heat treatment device of stub shaft with inspection function.
PCT/KR2015/012810 2015-11-26 2015-11-27 Apparatus for high-frequency heat treatment of stub shafts, having eddy-current-testing total inspection function WO2017090796A1 (en)

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