KR101595813B1 - Automatic method for inspection of heat treatment state - Google Patents

Abstract

An inspection target component preparation step S100 of storing a plurality of inspection target parts P at a predetermined interval in a storage groove 106 of an inspection target supply tray 104 mounted on an upper part of a support plate 102; A component reference value P for detecting a magnitude and a distribution of an eddy current of a component P having a normal heat treatment state by inserting parts P having a normal heat treatment state in a plurality of inspection target reference modules 170, Detecting step (S110); A plurality of inspection target measurement modules 160 which are held by the first clamps 112 of the inspection target supply means 110 and which supply a plurality of inspection target parts P stored in the inspection target supply tray 104 to the plurality of inspection target measurement modules 160 A target supply step (S120); An inspection object detection step of detecting an eddy current magnitude and a distribution with respect to an inspection object part P by generating an eddy current in an inspection object part P inserted into a plurality of inspection object measurement modules 160 and calculating a detection value (S130); And transmits the detected reference value and the detection value of the inspection object eddy current to the control unit 172. The transmitted heat treatment state is transmitted to the normal state part 170 and the inspection target measurement module 160, (S140) of comparing the eddy current reference value of the component (P) with the detection value of the component to be inspected (P) to determine whether the heat treatment state of the component P to be inspected is normal or defective; The inspection target discharging means 190 is operated according to the control signal of the controller 172 so that the second clamp 192 grasps the inspection target part P having been inspected in the inspection target measurement module 160, (S150) of discharging the component (P) from the inspection target measurement module (160).
According to the present invention, the present invention detects a reference value by detecting the magnitude and distribution of an eddy current with respect to a part to be inspected in a traveling steady state of an existing module to be inspected, and detects an eddy current It is configured to accurately determine the steady state and the defective state of the heat treatment with respect to the ball stud, which is the component to be inspected, by comparing the size and the distribution.
Therefore, it is possible to accurately check the parts to be inspected, which can not be judged by the operator's naked eye and in the normal state of the heat treatment state and the defective state, through the eddy current, so that the inspection time is shortened and the working efficiency is improved have.
Further, there is no need for the operator to manually supply and discharge the inspection target parts, and the inspection target supply unit and the inspection target discharge unit automatically discriminate the inspection target parts in the normal state and the inspection target parts in the defective state So that a more efficient heat treatment inspection work can be performed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of automatically inspecting a heat treatment state,

TECHNICAL FIELD The present invention relates to a method of automatically inspecting a heat treatment state, and more particularly, to a heat treatment inspection method for discriminating between a ball stud in a steady state and a ball stud in a defective state by inspecting a heat treatment state of the ball stud,

In general, ball studs are used in joints of automotive steering systems and suspension systems. The ball stud serves to maintain the stability of the vehicle during steering. When the driver adjusts the steering wheel, the transmitted steering force is transmitted to the steering knuckle and connected to the steering knuckle so that the steering can be adjusted to the left and right. It is the core component that constitutes the ball joint of the automobile which enables the left and right rocking.

A conventional ball stud is basically formed in an annular shape and includes a head portion provided at an upper portion and a body portion provided integrally with the head portion at a lower portion. Particularly, the body portion has a screw portion A neck portion formed at a boundary portion between the head portion and the body portion, and an inclined portion formed by tapering at a constant angle.

The damage of the ball stud which is continuously exposed to repetitive load is mostly caused by fatigue fracture due to cracks on the surface. To prevent this, the process of improving the fatigue strength of the surface through surface heat treatment is introduced.

A conventional ball stud manufacturing process is disclosed in Korean Registered Patent Publication No. 10-0284115. However, in the ball stud manufacturing process as described above, there is no separate inspection method for inspecting the heat-treated ball studs. Therefore, it is impossible to perform the heat treatment of the ball studs other than the naked eye test, There are problems such as insufficient inspection and contamination of defective products compared with automatic inspection.

Korea Patent No. 10-0284115

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus for detecting a magnitude and distribution of an eddy current The present invention provides a method of automatically inspecting a heat treatment state of a ball stud, which is a component to be inspected, by comparing an eddy current magnitude and a distribution of a component to be inspected supplied to the measurement module.

According to an aspect of the present invention, there is provided a method for automatically inspecting a heat treatment state according to the present invention, comprising the steps of: storing a plurality of parts to be inspected at regular intervals in a storage groove of an inspection target supply tray, A component reference value detection step of detecting a magnitude and a distribution of an eddy current of a component having a normal heat treatment state by inserting a component having a normal heat treatment state in each of a plurality of inspection target reference modules, An inspection target supply step of holding a plurality of inspection target parts accommodated in the inspection target supply box by a first clamp of inspection target supply means and supplying the plurality of inspection target modules to a plurality of inspection target measurement modules, The eddy current is generated in the inspecting object inserted in the inside, And a control unit connected to the plurality of inspection target reference modules and the inspection target measurement module to transmit the detected reference value and the detection value of the inspection target eddy current to the control unit, An inspection target comparison step of comparing an eddy current reference value of the steady state part with a detection value of the inspection target part to determine whether the heat treatment condition of the inspection target part is normal or defective; And an inspection target discharging step of holding a part to be inspected whose inspection target measurement module has been inspected by the second clamp and discharging the inspection target part from the inspection target detection module.

According to a control signal of the control unit, the inspected object discharging unit includes a defective-item collection box installed at a lower portion of the inspecting object part, which is dropped in a defective-product discharge hole formed at the center of the support plate, And collecting the defective article.

In the component reference value detection step, a plurality of reference modules to be inspected are arranged in parallel in a row, and when an eddy current is detected at the same time, an error may occur due to an eddy current of another adjacent reference module to be inspected. Is detected.

In the inspection target detection step, when a plurality of inspection target measurement modules are arranged in a row in parallel and an eddy current is detected at the same time, an error may occur due to eddy currents of adjacent inspection target measurement modules adjacent to each other. Is detected.

And a normal part collection step in which a plurality of normal state parts having been inspected are sequentially stored in the collection grooves of the normal part collection box placed on the upper part of the support plate after the inspection target discharge step.

The method for automatically checking the heat treatment state according to the present invention has the following effects.

The present invention detects a reference value by detecting the magnitude and distribution of an eddy current with respect to a part to be inspected in a steady state through an existing module to be inspected and compares the magnitude and distribution of the eddy current supplied to the inspection target module with the eddy current So as to accurately determine the steady state and the defective state of the heat treatment for the ball stud, which is the component to be inspected.

Therefore, it is possible to accurately check the parts to be inspected, which can not be judged by the operator's naked eye and in the normal state of the heat treatment state and the defective state, through the eddy current, so that the inspection time is shortened and the working efficiency is improved have.

Further, there is no need for the operator to manually supply and discharge the inspection target parts, and the inspection target supply unit and the inspection target discharge unit automatically discriminate between the inspection target parts in the normal state and the inspection target parts in the defective state So that a more efficient heat treatment inspection work can be performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of a method for automatically checking a heat treatment state according to the present invention; FIG.
2 is a plan view showing a configuration of a preferred embodiment of the automatic heat treatment state inspection method according to the present invention.
3 is a side view showing a configuration of a preferred embodiment of the automatic heat treatment state inspection method according to the present invention.
4 is a front view showing a configuration of a preferred embodiment of a method for automatically checking a heat treatment state according to the present invention.
Fig. 5 is a front view showing a state in which the first and second clamps constituting the embodiment of the present invention grasp a part to be inspected. Fig.
6 is a plan view showing a configuration of a defective product discharge hole and an inspection target measurement module constituting an embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an automatic thermal processing method according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a configuration of a preferred embodiment of a method for automatically checking a heat treatment state according to the present invention. FIG. 2 is a plan view showing a configuration of a preferred embodiment of a method for automatically checking a heat treatment state according to the present invention FIG. 3 is a side view showing a configuration of a preferred embodiment of the automatic heat treatment state inspection method according to the present invention, and FIG. 4 is a front view showing a configuration of a preferred embodiment of the automatic heat treatment state inspection method according to the present invention And FIG. 5 is a front view showing a state in which the first and second clamps constituting the embodiment of the present invention grasp the component to be inspected. FIG. 6 is a cross- Is a plan view showing the configuration of the second embodiment.

As shown in these figures, the apparatus for automatically inspecting a heat treatment state according to the present invention includes a support frame 100 for supporting a plurality of components on an upper portion of a support frame 100, An inspection target supply tray 104 installed at an upper portion of the inspection target tray 104 and having a plurality of storage grooves 106 formed therein to store and store inspection target parts P; (110) for holding and supplying a plurality of inspection subject parts (P) to be inspected and being supplied to the inspection target supply unit (110) An inspection target measurement module 160 for inserting and fixing a plurality of inspection target parts P and detecting an eddy current and a heat treatment state of the inspection target part; A steady-state part is inserted An inspection object reference module 170 for detecting an eddy current and detecting a reference value of a component to be inspected and an inspection object module 170 installed at one side of the inspection target side module 160, A control unit 172 for comparing the measured values of the inspection target reference module 170 to determine a normal state and a defective state by detecting a heat treatment state of a part to be inspected and a control unit 172 connected to the control unit 172, An inspection target discharging means 190 for gripping and moving an inspection target part P which is moved in all directions in accordance with a control signal of the inspection target measurement module 160 and inserted and fixed in the inspection target measurement module 160, And a normal part collection box 180 installed at one side of the collection part 182 and having a plurality of collection grooves 182 formed therein for inserting and storing a part P to be inspected in a steady state, Lt; / RTI >

The supporting frame 100 has a rectangular cross section and is formed long left and right so that a plurality of frames are connected to the front, back, left, and right sides to form a skeleton of a rectangular parallelepiped. A plurality of parts are installed and fixed to the upper portion of the support frame 100.

A support plate 102 is installed on the support frame 100. The support plate 102 is formed of a rectangular plate having a predetermined thickness and is installed on the support frame 100. The support plate 102 is supported at its upper portion with a plurality of parts.

An inspection target supply box 104 is installed at a central lower portion of the support plate 102. As shown in FIG. 1, the inspection target supply tray 104 has a hollow hexahedron shape and an open upper part. A plurality of inspection subject parts P are inserted and fixed in the inspection target supply tray 104.

A plurality of storage grooves 106 are formed in the inspection target supply tray 104. A plurality of the storage grooves 106 are formed in the inspection target supply box 104 at regular intervals. The part to be inspected P is inserted and fixed in the storage groove 106.

That is, the parts to be inspected are inserted and fixed at predetermined intervals in the storage groove 106 of the inspection target supply tray 104, and are positioned at the same interval as a plurality of first clamps 112 to be described below, An accurate grasping operation of the component P can be performed.

On the left side of the inspection target supply tray 104, inspection target supply means 110 is provided. 1, the inspection target supply unit 110 is installed on the lower left side of the support plate 102. [ The inspection target supply unit 110 is installed on the upper part of the inspection target supply tray 104 and is provided in a pair so as to be movable left and right to selectively grip the upper part of the inspection target part P A first clamp body 112 for supporting the first clamp 112 and an upper side of the first clamp 112 so as to be movable left and right, A first clamp fixing bracket 118 fixed to the first clamp body 116 at regular intervals and moved up and down, and an upper feeding screw 124 and an upper and lower feeding motor 126, A first upper transferring member 120 for moving the clamping bracket 118 upward and downward and a second upper transferring member 120 horizontally installed on one side of the first upper transferring member 120 and having right and left transfer screws 134, A feed motor 136 is provided so as to move the first upper feeding member 120 to the left and right, The first and second left and right conveying members 130 and 130 are provided on the lower surface of the first left and right conveying member 130. The front and rear conveying screws 144 and the forward and backward conveying motors 146, And a first front and rear conveying member 140 for moving the front and rear conveying members back and forth.

The first clamp 112 is a general clamping device, and a detailed description thereof will be omitted. As shown in FIG. 4, the first clamps 112 are formed in a pair and are formed in a hollow rectangular parallelepiped shape so as to be movable leftward and rightward by air pressure or hydraulic pressure. The first clamp 112 is moved to the left and the right to grasp and release the inspection object part P, that is, the ball stud head.

A first grip member 114 is provided inside the first clamp 112. The first holding member 114 is formed of a rectangular plate having a predetermined thickness, and the left or right surface thereof is recessed in a shape corresponding to the arc surface of the component P to be inspected. The depressed portion of the circular arc provided inside the first clamp 112 of the first holding member 114 firmly grips the head P of the component to be inspected, that is, the ball stud.

A first clamp body 116 is provided on the upper portion of the first clamp 112. The first clamp body 116 has a substantially rectangular parallelepiped shape and has a plurality of parts installed therein, and a first clamp 112 is installed and fixed to a lower surface of the first clamp body 116. A plurality of flow pipes are installed in the first clamp body 116 to supply pneumatic or hydraulic pressure to the first clamp 112 and to support the first clamp 112.

A first clamp fixing bracket 118 is installed on the upper portion of the first clamp body 116. 3, the first clamp fixing bracket 118 is formed in a "?" Shape having a predetermined thickness, and a plurality of the first clamping bodies 116 are formed at a lower portion of the first clamp fixing bracket 118, Is fixedly supported.

That is, a plurality of the first clamp bodies 116 are installed and fixed at a predetermined interval on the lower surface of the first clamp fixing bracket 118, and when the first clamp fixing bracket 118 is moved up and down The first clamp body 116 is moved upward and downward.

The first clamping bracket (118) is provided on the rear surface thereof with a first vertical transferring member (120). The first upper transferring member 120 is vertically formed in an up and down direction. The upper and lower transferring members 120 have an upper and a lower transferring body 122, a vertical transferring screw 124 having a cylindrical shape, An upper feeding motor 126 connected to the upper feeding screw 124 in a coaxial manner to rotate the left and right feeding screws, and the like.

The first clamp fixing bracket 118 is screwed to the upper and lower feeding screws 124 of the first upper transferring member 120 and is vertically transferred according to the rotation of the upper feeding screw 124.

1, a first left and right conveying member 130 is provided on the front surface of the first upper transferring member 120. The first and second left and right conveying members 130 are horizontally elongated and include a left and right conveying body 132, a left and right conveying screw 134 having a cylindrical shape and being elongated in the left and right direction, A left and right conveying motor 136 connected to the left and right conveying screws 134 to coaxially rotate the left and right conveying screws, and the like.

The first upper transferring body 122 is screwed to the left and right conveying screws 134 of the first left and right conveying members 130 and is conveyed to the left and right according to the rotation of the left and right conveying screws 134.

A first front and rear conveyance member 140 is installed on a lower surface of the first left and right conveyance member 130. The first and second front and rear conveying members 140 are longitudinally formed in a front and rear direction and have a space inside and a front and rear conveying body 142. The front and rear conveying screws 144 have a cylindrical shape and are formed long and long, And a front and rear conveying motor 146 that is coaxially connected to the left and right conveying screws 144 to rotate the forward and backward conveying screws.

The first left and right conveying body 132 is screwed to the front and rear conveying screws 144 of the first front and rear conveying member 140 and is conveyed forward and backward in accordance with the rotation of the forward and backward conveying screws 144.

That is, a plurality of the first clamps 112 are moved forward, backward, leftward, rightward and upward and downward by the first upper transferring member 120, the first left and right transferring member, and the first front and rear transferring member 140 So that the inspection target part P of the inspection target supply tray 104 can be grasped accurately at one time and accurately transferred to the transfer position.

A first vertical support 150 is installed below the first front and rear conveying members 140. The first vertical support 150 is formed as a vertically long frame having a rectangular cross section with a hollow interior. The first vertical support rods 150 are respectively installed at the lower portions of the front and rear sides of the first front and rear conveyance members 140 so that the first front and rear conveyance members 140 are spaced apart from each other do.

An inspection object measurement module 160 is installed at the center of the support plate 102. The inspection target measurement module 160 includes an eddy current measurement member 162 for sensing an eddy current of the component P and a drive coil for generating an eddy current and a detection coil for sensing an eddy current, A component inserting groove 164 which is vertically formed at the center of the member 162 and into which the component P is inserted and fixed and an eddy current measuring member 162 which is provided below the eddy current measuring member 162, And a fixing member 166 for supporting the eddy current measuring member 162 at a predetermined distance from the floor surface.

The eddy current measuring member 162 is formed in a hollow hexagonal shape so that a driving coil for generating an eddy current inside and a detecting coil for detecting an eddy current are provided to detect the magnitude and distribution of the eddy current of the inspection target part P do.

A component insertion groove 164 is formed at the center of the eddy current measuring member 162. The component insertion groove 164 is formed in a circular shape so as to pass through the component insertion groove 164, and the component P to be inspected is inserted and fixed therein.

A fixing member 166 is provided below the eddy current measuring member 162. The fixing member 166 is formed in a hexahedral shape so that the eddy current measuring member 162 is fixed at a position spaced apart from the supporting plate 102 by a predetermined distance.

A fixing insertion groove 168 is formed at the center of the fixing member 166. The fixed insertion groove 168 is formed in a circular shape so as to pass through the lower portion of the part P to be inspected.

That is, the inspection target measurement module 160 is installed in parallel with the same number of the first clamps 112 as the number of the first clamps 112, And an eddy current is generated in the eddy current measuring member 162 to detect the eddy current magnitude and distribution of the component P to be inspected.

An inspection target reference module 170 is installed on the upper right side of the support plate 102. The inspection target reference module 170 is installed in the same number as the inspection target measurement module 160. The inspection target reference module 170 includes the same components as the inspection target measurement module 160. The inspection target module 170 detects the magnitude and distribution of the eddy current of the inspection target part P in a normal heat treatment state, And is a comparison reference for comparing the magnitude and distribution of the eddy current of the component P to be inspected which is inspected by the measurement module 160.

Therefore, the eddy current magnitude and distribution of the inspection target part P of the inspection target measurement module 160 are detected, and the eddy current magnitude and distribution of the inspection target part P in the steady state of the inspection target reference module 170 are compared Thereby determining the inspection target part P in the steady state and the defective state.

A control unit 172 is installed on the lower right side of the support frame 100. The control unit 172 compares and analyzes the eddy current magnitude and distribution of the inspected component P connected to the inspection target measurement module 160 and the inspection target reference module 170 to check the steady state and the defective state The target part P is discriminated and the inspected object discharging means 190 to be described below is controlled to separate the inspection target part P in the steady state and the defective state.

A defect discharge hole 174 is formed in the upper part of the inspection target measurement module 160. A plurality of upper and lower parts are formed through the upper part of the center of the support plate 102 of the defective article discharge hole 174. The defective article discharge hole 174 guides the inspection target part P, which is a defective state among the inspection target parts inspected by the inspection target discharge means 190 to be described below, to the lower portion of the support plate 102 .

A defective article collection box 176 is provided below the defective article discharge hole 174. The defective item collection box 176 is hollow and has a defective inspection target part P which is opened at the top and communicates with the defective product discharge hole 174 and falls down through the defective product discharge hole 174 .

A normal component collection box 180 is installed at a central upper portion of the support plate 102. As shown in FIG. 1, the normal part collection box 180 has a hollow hexahedron shape and an open top part. A plurality of parts P to be inspected for steady state are inserted and fixed inside the normal parts collection box 180.

A plurality of collection grooves 182 are formed in the normal component collection box 180. The collection grooves 182 are formed in a plurality of circular portions through the normal component collection box 180 at regular intervals. In the inside of the collection groove 182, a part P to be inspected for steady state is inserted and fixed.

That is, the parts P to be inspected for steady state are inserted and fixed in the collection grooves 182 of the normal component collection box 180 and are spaced at the same intervals as the intervals of the plurality of second clamps 192 So that the accurate collection of the parts P to be inspected can be performed.

On the right side of the normal component collection box 180, an inspection target discharge unit 190 is installed. The inspection target discharging means 190 is installed on the upper part of the normal part collecting box 180 and includes a pair of left and right movable test objects to be inspected, A second clamp 192 selectively gripping the upper portion of the component P and a second clamp 192 fixed to the upper portion of the second clamp 192 to be movable left and right, A second clamp fixture bracket 198 fixed to the second clamp fixture body 196 and a plurality of the second clamp fixtures 196 at regular intervals and moved up and down, A second upper transferring member 200 having an upper transferring motor 206 for moving the second clamping platen 198 upward and downward and a second upper transferring member 200 horizontally installed on one side of the second upper transferring member 200, And a left and right feed screw 214 and a left and right feed motor 216 are provided inside, A second left and right conveying member 210 for moving the conveying member 120 to the left and right and a lower surface of the second left and right conveying member 210 and having front and rear conveying screws 224, And a second front and rear conveying member 220 provided with a second lateral conveying member 226 for moving the second lateral conveying member 210 forward and backward.

The inspection target discharge means 190 is formed in the same structure as the inspection target supply means 110, and a detailed description thereof will be omitted.

The inspection target discharge unit 190 is moved to the front, back, left, right and up and down according to the control signal of the controller 172 to grasp the inspection target part P of the inspection target measurement module 160 The inspection object part P is dropped into the defective article discharge hole 174 in the case of the defective inspection object part P in the defective state and inserted into the collection groove 182 of the normal part collection box 180 Separate the state part and the defective state part.

Hereinafter, a heat treatment inspection method according to the present invention will be described with reference to FIGS. 1 to 6. FIG.

The worker first houses a plurality of inspection subject parts P at a predetermined interval in the storage groove 106 of the inspection target supply tray 104 mounted on the upper part of the support plate 102, (S100), which is located below the center of the support plate 102, so as to be able to be inspected.

When the inspection target component preparing step S100 is completed, the operator inserting the parts P having the normal heat treatment state in the plurality of inspection target reference modules 170, and the parts P having the normal heat treatment status P (S110) for detecting the eddy current magnitude and the distribution of the eddy currents and the reference current value.

In the component reference value detection step S110, a plurality of inspection target reference modules 170 are provided in a row in parallel, and when an eddy current is detected at the same time, an error occurs due to an eddy current of another adjacent inspection target reference module 170 The magnitude and distribution of eddy currents are sequentially detected.

A plurality of inspection target parts P accommodated in the inspection target supply box 104 are detected by the inspection target supply unit 110 (step S 110) after the reference values of the plurality of inspection target reference modules 170 are detected through the component reference value detection step S 110 (S120), which is held by the first clamp 112 of the inspection target measurement module 160 and is supplied to the plurality of inspection target measurement modules 160, respectively.

The inspection target supply unit 110 grasps the inspection target part P stored in the inspection target supply box 104 from the inspection target part P adjacent to the inspection target measurement module 160, (160).

When supply of the inspection target part P is completed by the inspection target supply unit 110, an eddy current is generated in the inspection target part P inserted in the plurality of inspection target measurement modules 160, An inspection target detection step (S130) of detecting the eddy current magnitude and distribution with respect to the part (P) and calculating a detection value is performed.

In addition, in the inspection object detection step S130, a plurality of inspection object measurement modules 160 are provided in a row in parallel, and when an eddy current is detected at the same time, an error may occur due to eddy currents of adjacent inspection target measurement modules The magnitude and distribution of eddy currents are detected sequentially.

When the magnitude and distribution of the accurate eddy current for the part P to be inspected are detected through the inspection object detection step S130, the inspection target module 170 and the inspection object measurement module 160 are connected to each other, And transmits the detected reference value and the detected value of the inspection target eddy current to the control unit 172. The transmitted heat treatment state is compared with the detected value of the inspection target part P and the eddy current reference value of the steady state part P, An inspection object comparison step (S140) is performed to determine whether the heat treatment condition of the part (P) is normal or defective.

In the inspection object comparison step (S140), the eddy current magnitude and distribution of each part to be inspected P and the part P having a normal heat treatment state are compared one-to-one to determine whether the heat treatment state of the ball stud is normal or not .

The inspection target discharging means 190 is operated according to the control signal of the controller 172 so that the second clamp 192 grasps the inspection target part P having been inspected in the inspection target measurement module 160, An inspection target discharge step S150 for discharging the part P from the inspection target measurement module 160 is performed.

The inspected object P, which has been inspected and stored in the inspection target measurement module 160, is discharged to the outside by the inspection target discharge step S150.

According to the control signal of the controller 172, the inspected object discharging unit 190 detects that the inspection target part P, which has been inspected, is insufficiently heat- And drops into the defective-product discharge hole 174 formed at the center so as to carry out a defective-article collection step (S160) to be collected in the defective-article collection box 176 provided at the lower part.

After the inspection target discharging step S150, a plurality of normal state parts P, which have been inspected, are sequentially stored in the collection grooves 182 of the normal part collection box 180 mounted on the upper part of the support plate 102 The normal component collection step (S170) is performed.

The scope of the present invention is not limited to the above-described embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the scope of the present invention.

100. Support frame 102. Support plate
104. Supply source for inspection 110. Supply source for inspection
160. Measurement module to be inspected 170. Reference module to be inspected
172. Control unit 180. Normal parts collection box
190. Subject discharge means

Claims (5)

An inspection target component preparation step S100 of storing a plurality of inspection target parts P at a predetermined interval in a storage groove 106 of an inspection target supply tray 104 mounted on an upper part of a support plate 102;
A reference value is calculated by detecting the magnitude and distribution of the eddy current of the component P in which the heat treatment is in a steady state by inserting the parts P having the steady state in the heat treatment state in the plurality of inspection target reference modules 170, The number of the reference modules 170 to be inspected are arranged in a line and the errors are generated by the eddy currents of the adjacent inspection target reference modules 170 adjacent to each other when the eddy currents are detected at the same time, A component reference value detection step (S110) of detecting a component reference value;
A plurality of inspection target measurement modules 160 which are held by the first clamps 112 of the inspection target supply means 110 and which supply a plurality of inspection target parts P stored in the inspection target supply tray 104 to the plurality of inspection target measurement modules 160 A target supply step (S120);
An eddy current is generated in an inspection target part P inserted in a plurality of inspection target measurement modules 160 to detect a magnitude and a distribution of an eddy current with respect to the inspection target part P to calculate a detection value, In the case where the object measurement modules 160 are arranged in a row in parallel and an eddy current is detected at the same time, an error may occur due to the eddy current of the adjacent inspection target measurement module 160. Therefore, An object detecting step (S130);
And transmits the detected reference value and the detection value of the inspection object eddy current to the control unit 172. The transmitted heat treatment state is transmitted to the normal state part 170 and the inspection target measurement module 160, (S140) of comparing the eddy current reference value of the component (P) with the detection value of the component to be inspected (P) to determine whether the heat treatment state of the component P to be inspected is normal or defective;
The inspection target discharging means 190 is operated according to the control signal of the controller 172 so that the second clamp 192 grasps the inspection target part P having been inspected in the inspection target measurement module 160, An inspection target discharge step S150 for discharging the part P from the inspection target measurement module 160;
The inspected object discharging means 190 detects that the inspected object P having been inspected is defective in the heat processing condition among the inspected object P in the center of the supporting plate 102 in accordance with the control signal of the controller 172 A defective article collection step (S160) in which the defective article is dropped in the defective article discharge hole 174 formed to be passed therethrough and collected in the defective article collection box 176 provided at the lower part;
The inspected object discharging means 190 detects that the part to be inspected P having been inspected is determined to be normal in the inspection part P according to the control signal of the controller 172, And a normal component collection step (S170) in which a plurality of normal state parts (P) having been inspected are sequentially stored in a collection groove (182) of a normal component collection box (180). delete delete delete delete

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