KR20200070905A - A apparatus and method for inspecting surface defect of screw type cutting processed goods - Google Patents

Abstract

An objective of the present invention is to provide an apparatus for inspecting a surface defect of a cut product of a screw shape which inspects a cut product of a screw shape by using an image obtained by photographing the entire surface of the cut product. To achieve the objective, the apparatus for inspecting a surface defect of a cut product of a screw shape comprises: a rotation transport jig stage to rotate; a plurality of jigs positioned at predetermined intervals along the outer circumference of the rotation transport jig stage; cut products of a screw shape supplied to the plurality of jigs; and an inspection unit having a plurality of cameras to photograph the cut products of a screw shape at different positions.

Description

A surface defect inspection device and inspection method for a thread-shaped cutting product{A APPARATUS AND METHOD FOR INSPECTING SURFACE DEFECT OF SCREW TYPE CUTTING PROCESSED GOODS}

The present invention relates to a surface defect inspection apparatus and inspection method for a screw-shaped cutting workpiece, and more particularly, to a surface defect inspection apparatus and inspection method for a screw-shaped cutting workpiece for inspecting a surface defect for a screw-shaped cutting workpiece. It is about.

A cutting-processed product is a component that can be usefully used in a product having a complicated shape, an item requiring precise surface processing, and an urgent sample production item.

These cutting products are useful in the production of products with precise dimensional tolerances, and when using these cutting products in the manufacture of finished products, there is an advantage of reducing post-processing.

Particularly, among various cutting products, screw-shaped cutting products are used for complex products such as automobiles, trains, ships, and airplanes.

These screw-shaped cutting products are used to fit and fix two objects, and are mainly used to combine mechanical parts, but are also used to control or move the movement of a specific part.

In the threaded cutting product, a groove is formed to be inclined on an outer surface or an inner surface. As a result, when rotating a cutting product in the form of a screw, it is combined, and when it is rotated in the opposite direction, it is disassembled. It is used for a variety of joining applications, from joining to the joining of complex mechanical parts, and the demand has increased significantly.

However, a threaded cutting product used in products requiring precision, such as automobiles, trains, ships, airplanes, etc., requires a smooth shape product without defects.

1 to 6 are views showing various defect states of a threaded cutting product.

The circle in FIG. 1 represents the surface defect of the upper surface of the tooth in a thread-shaped cutting product, the circle in FIG. 2 represents the irregularity of the tooth surface and the tooth in a thread-shaped cutting product, and the circle in FIG. 3 is a tooth surface in the thread-shaped cutting product The circle of FIG. 4 represents the scratch of the tooth surface in the threaded cutting workpiece, the circle of FIG. 5 represents the comb formed on the tooth surface in the threaded cutting workpiece, and the circle in FIG. 6 represents the threaded cutting workpiece In the drawing, the turning part is stamped.

When the surface defect of the threaded cutting work piece occurs, there is a problem in that noise or deviation occurs when the cutting work piece is rotated.

By the way, such various defects in the cutting work of the screw-shaped occurs, but conventionally, defects and quality inspection of the cut-worked cutting of the thread-like were made by the naked eye of workers.

The visual inspection by such personnel has a problem in that the yield of the product decreases due to a long inspection time.

In addition, according to the condition of workers, there is a problem in that the accuracy of defects and good products is reduced, thereby reducing the reliability of the product.

Accordingly, the present invention has been proposed to meet the above-mentioned needs, the purpose of which is to inspect the entire surface of the threaded cutting work piece by inspecting the surface defects using real-time imaging or real-time shooting images to check for defects by product or type. It is to provide a surface defect inspection device for a thread-shaped cutting product to be discharged.

In order to achieve the above object, the surface defect inspection apparatus of a screw-shaped cutting workpiece according to the present invention includes a rotating rotary feed jig stage and a plurality of jigs positioned at predetermined intervals along the outer circumference of the rotary feed jig stage. And an inspection unit having a screw-shaped cutting work piece supplied to each of the plurality of jigs, and a plurality of cameras respectively shooting the screw-shaped cut work pieces at a plurality of positions.

In addition, the surface defect inspection device of the screw-shaped cutting workpiece according to the present invention, a base plate, a vertical support plate supported on the base plate so as to be height-adjustable, a jig positioned on the vertical support plate, and the jig image And an inspection unit having a screw-shaped cut-worked product to be supplied to and a plurality of cameras respectively shooting the screw-shaped cut-worked product at a plurality of positions.

In addition, the surface defect inspection device of the screw-shaped cutting workpiece according to the present invention, a base plate, a vertical support plate supported on the base plate so as to be height-adjustable, a jig positioned on the vertical support plate, and the jig image And an inspection unit having a screw-shaped cutting workpiece supplied to the camera, a camera photographing the screw-shaped cutting workpiece while moving from top to bottom, and a camera photographing the bottom of the screw-shaped cutting workpiece.

In addition, in the apparatus for inspecting the surface defects of a thread-shaped cutting product according to the present invention, the inspection unit photographs an upper portion, a lower portion, an upper tooth surface, a lower tooth surface, and a tooth plate of the thread-shaped cutting product.

In addition, in the surface defect inspection apparatus of the threaded cutting work piece according to the present invention, the jig is raised and lowered while rotating at the same pitch as the threaded cut work piece.

In addition, in the surface defect inspection device for a screw-shaped cutting workpiece according to the present invention, the screw-shaped cutting workpiece supplied to the jig is introduced through the input unit in the form of a pallet in which a plurality of pieces are stored, and is accommodated in the injected pallet A plurality of the threaded cutting products are individually supplied to the jig by the first transfer unit.

In addition, in the surface defect inspection device of the thread-shaped cutting workpiece according to the present invention, the input unit, the first pallet-injecting transfer member for transferring a pallet containing a plurality of the thread-shaped cutting workpiece, and the thread-shaped cutting workpiece It includes a first pallet discharge transfer member for discharging the empty pallet is completed supply.

In addition, in the surface defect inspection apparatus for a thread-shaped cutting work piece according to the present invention, the first transfer part, the first robot arm to the cut-shaped cut work piece accommodated in the pallet or the pallet introduced by the input unit The first elevating member for lifting by this gripping, and the pallet gripped by the first robot arm is transferred to the pallet discharge conveying member, or the threaded cutting product held by the first robot arm is held. It includes a first transfer member for transferring to the jig, when the transfer by the first transfer member is completed, the gripping the pallet or the threaded cutting workpiece is placed by the first robot arm.

In addition, in the surface defect inspection apparatus for a thread-shaped cutting workpiece according to the present invention, the thread-shaped cutting workpiece, which has been inspected by the inspection unit, is individually transferred from the jig by a second transfer unit, and the transferred thread shape The cutting work piece of the product is judged as a good product or a bad product by the inspection result of the inspection unit and is discharged through the discharge unit, and when discharged as the defect, it is classified and discharged according to the type of defect.

In addition, in the surface defect inspection device of the screw-shaped cutting workpiece according to the present invention, the second transfer unit, and a second lifting member for lifting after the second robot arm grips the screw-shaped cutting workpiece from the jig, And a second conveying member for conveying the threaded cutting workpiece held by the second robot arm to the discharge unit, and when the transfer by the second conveying member is completed, the gripped threaded cutting workpiece is transferred. The second robot arm is placed.

In addition, in the surface defect inspection apparatus of the thread-shaped cutting workpiece according to the present invention, the discharge portion, the second pallet input conveying member for conveying the empty pallet, and the conveyed empty pallet by the second robot arm Each includes a good-quality pallet discharge member or a bad-type pallet discharge member, wherein the good-quality pallet discharge member is stored in a predetermined number of pieces of the thread-shaped cutting product determined as good quality by the inspection unit in the previously supplied pallet. The pallet is discharged, and the defective pallet discharging member discharges the pallet when a predetermined number of the threaded cutting products determined as defective by the inspection unit are stored in the pallet that has been previously supplied.

In addition, in order to achieve the above object, the method for inspecting the surface defects of a threaded cutting product according to the present invention comprises: a first step (S100) of inputting a pallet containing a plurality of threaded cutting products through an input unit; A second step (S200) of transferring a plurality of the threaded cutting products stored in the input pallet through a first transfer unit, and a third step of inspecting the surface of the transferred threaded cutting workpiece by an inspection unit (S300), the fourth step (S400) of conveying the threaded cutting workpiece, which has been inspected by the inspection unit, by the second transfer unit, and the transferred threaded cutting workpiece by the inspection result of the inspection unit It includes a fifth step (S500) to determine whether it is good or bad and discharge it through the discharge unit.

In addition, in the method for inspecting the surface defects of a threaded cutting product according to the present invention, the inspection unit photographs an upper portion, a lower portion, an upper tooth surface, a lower tooth surface, and a tooth plate of the threaded cutting product.

According to the present invention, the entire surface of the screw-shaped cutting workpiece is inspected by inspecting the surface defects using a real-time inspection or real-time imaging of the entire surface of the screw-shaped cutting workpiece, thereby reducing inspection time and improving inspection accuracy. It works.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the surface defect of the upper part of a tooth surface in a thread-shaped cutting workpiece.
Fig. 2 is a view showing unevenness of a tooth surface and a tooth surface in a threaded cutting product.
Fig. 3 is a view showing the tooth surface imprinting in a threaded cutting product.
4 is a view showing a scratch on a tooth surface in a threaded cutting product.
5 is a view showing a comb formed on a tooth surface in a threaded cutting product.
6 is a view showing the turning portion of the threaded cutting work.
Fig. 7 is a view showing the overall shape of a threaded cutting product.
Figure 8 is a perspective view showing the entire configuration of a surface defect inspection device of a thread-shaped cutting product according to the present invention.
9 is a view showing the configuration of an inspection unit in the surface defect inspection apparatus of a screw-shaped cutting product according to the first embodiment of the present invention.
10 is a view showing the configuration of an inspection unit in the surface defect inspection device of a screw-shaped cutting product according to a second embodiment of the present invention.
11 is a view showing the configuration of an inspection unit in a surface defect inspection apparatus of a thread-shaped cutting product according to a third embodiment of the present invention.
Figure 12 is a flow chart showing the overall flow of the surface defect inspection method of the thread-shaped cutting workpiece according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to related drawings.

7 is a view showing the overall shape of a threaded cutting product.

Referring to FIG. 7, there is shown a screw-shaped cutting workpiece 10 which is an inspection object inspected by the surface defect inspection apparatus 1000 of a screw-shaped cutting workpiece according to the present embodiment.

In FIG. 7, for ease of explanation, the threaded cutting product 10 is described as a hollow worm used in a power window motor or a seat motor of a vehicle, but is not limited thereto. That is, the worm used for the worm gear, the shaft 11 through which the upper and lower portions are penetrated, and the outer surface thereof are applicable to both the threaded cutting work product 10 having a screw shape.

The thread-shaped cutting work 10 is formed of a shaft 11 through which the upper and lower portions penetrate, and a screw having an inclined outer surface of the shaft 11. The slanted screw includes a convexly protruding tooth surface 14, a concave recessed tooth 15, and a tooth surface 12, 13 between the tooth surface upper portion 14 and the tooth surface 15. The tooth surfaces 12 and 13 have an upper tooth surface 12 and a lower tooth surface 13 according to a viewing angle. If necessary, the threaded cutting 10 may be formed with an inclined detective screw on the inner surface of the through hole of the shaft 11.

The thread-shaped cutting work product 10 should have a smooth surface free of surface defects, stains, scratches, scratches, or combs, and the inspection unit 300 described later will inspect it.

8 is a perspective view showing the entire configuration of a surface defect inspection device of a thread-shaped cutting workpiece according to the present invention, and FIG. 9 is an inspection unit in a surface defect inspection apparatus of a thread-shaped cutting workpiece according to the first embodiment of the present invention It is a diagram showing the configuration.

Referring to FIG. 8, the apparatus 1000 for inspecting surface defects of a threaded cutting product according to the present invention includes an input unit 100, a first transfer unit 200, an inspection unit 300, and a second transfer unit 400 ), a discharge part 500, and a housing table 600. Here, three embodiments according to the configuration of the inspection unit 300 will be described. That is, the rest of the components except the inspection unit 300 are the same in all three embodiments.

The surface defect inspection apparatus 1000 of such a thread-shaped cutting product is mounted on the housing table 600. Thereby, the operator can easily grasp the manufacturing process of the surface defect inspection device 1000 of the screw-shaped cutting work piece, and the maintenance or repair of the device is very easy. In addition, a transport means 610 such as a wheel is mounted under the housing table 600. Thereby, the movement of the housing table 600 is easy, and the surface defect inspection apparatus 1000 of the threaded cutting work product can have mobility. On the other hand, in the vicinity of the transfer means 610, there is a fixing means (not shown) for fixing the housing table 600 from the ground. That is, when the surface defect inspection device 1000 of a screw-shaped cutting product is operated, the housing table 600 serving as the ground should be fixed. Therefore, the fixing means is provided in the vicinity of the conveying means 610 of the lower portion of the housing table 600. When this fixing means is fixed to the ground, the housing table 600 does not move and remains fixed.

In addition, referring to FIG. 9, the inspection unit 300 of the surface defect inspection apparatus 1000 of a screw-shaped cutting workpiece according to the first embodiment of the present invention includes a rotation feed jig stage 310 and a plurality of jigs 311 ), and a plurality of cameras 312, 313, 314, 315, and 316.

The rotation feed jig stage 310 is formed in a disk shape and rotates based on a central axis (not shown). A plurality of jigs 311 are positioned at predetermined intervals along the outer circumference of the rotary feed jig stage 310. Further, a plurality of jigs 311 are supplied with thread-shaped cutting products 10, respectively. At this time, a plurality of cameras 312, 313, 314, 315, and 316 at a plurality of positions photograph each of the threaded cutting work 10.

In more detail, the rotary feed jig stage 310 rotates by driving the rotary feed jig stage driver formed in the housing table 600. The shape of the rotary feed jig stage 310 is a circular plate or a triangular plate, a square plate, a pentagonal plate, a hexagonal plate. Although it may be formed of a polygonal plate such as, it is preferable to form the rotating feed jig stage 310 in a disk shape in consideration of the angle of rotation and convenience of work.

The plurality of jigs 311 are positioned at predetermined intervals along the outer circumference of the rotary feed jig stage 310. That is, a plurality of jigs 311 are fixedly installed while maintaining a constant distance in the circumferential direction of the upper surface of the rotary feed jig stage 310. Typically, the jig mounting portion is fixedly installed on the top of the rotary transfer jig stage 310 as a fixing member, and the jig is placed in the jig mounting portion and supported.

By rotation of the rotating feed jig stage 310, the jig 311 supported by the rotating feed jig stage 310 is located in an area to which the threaded cutting workpiece 10 is supplied from the first transfer unit 200 to be described later. Is done. The thread-shaped cutting work 10 supplied from the first transfer part 200 is positioned on the top surface of the jig 311.

In addition, in the surface defect inspection apparatus 1000 for a thread-shaped cutting workpiece according to the present invention, the inspection unit 300 includes an upper portion, a lower portion, an upper tooth surface 12, and a lower tooth surface of the thread-shaped cutting product 10. (13) and the toothbrush (15) are photographed. This is to precisely inspect the thread-shaped cut-out workpiece 10 that is judged as a good product when it has a smooth surface free of surface defects, stains, scratches, scratches, or combs. In order to accurately photograph the cutting work 10 in the form of a screw, it is preferable to photograph with a plurality of cameras, and at least 5 or more cameras are required. That is, the first camera 312 photographs the lower portion of the threaded cutting product 10, the upper tooth surface 12 photographs the second camera 313, and the toothbrush 15 photographs the third camera 314. Is photographed, the upper part is photographed by the fourth camera 315, and the lower tooth surface 13 is photographed by the fifth camera 316, so that all surfaces of the thread-shaped cutting object 10 are photographed. As a result, the thread-shaped cutting work product 10 determined as a good product is applied to parts of various fields (for example, a worm gear).

In addition, the first camera 312 to the fifth camera so that the lower, upper tooth surface 12, tooth plate 15, upper and lower tooth surface 13 of the threaded cutting product 10 can be photographed in this order. 316 is fixed to each position. At this time, the photographing position of the camera photographing in the order of the upper tooth surface 12, the tooth surface 15, and the upper and lower tooth surfaces 13 may be changed. That is, the second camera 313 photographs the upper tooth surface 12, the third camera 314 photographs the upper portion, not the tooth 15, and the fourth camera 315 is not the upper tooth 15 , And the fifth camera 316 may photograph the lower tooth surface 13. In addition, various camera positions can be changed. However, the lower portion of the thread-shaped cutting workpiece 10 is preferably not changed by the first transfer unit 200, since the thread-shaped cutting workpiece 10 must be photographed during transfer. In addition, the screw-shaped cutting workpiece 10 transferred by the first transfer unit 200 is photographed when the lower surface is photographed by the first camera 312 during transfer and alignment is performed to be accurately seated on the jig 311 later. do.

On the other hand, in the surface defect inspection apparatus 1000 of the screw-shaped cutting workpiece according to the present invention, the jig 311 is elevated while rotating at the same pitch as the screw-shaped cutting workpiece 10 by a jig driving unit (not shown). . Here, the pitch refers to a distance traveled when a screw rotates one turn or a distance between a screw thread and a mountain. That is, when the jig 311 is raised and lowered by 2 pitches, the threaded cutting product 10 is also elevated by 2 pitches. Accordingly, when the distance the jig 311 is elevated is measured by a sensor or the like, the shooting distance of the upper tooth surface 12 or the lower tooth surface 13 photographed by the inspection unit 300 in the threaded cutting product 10 is known. It becomes possible.

Next, in the surface defect inspection apparatus 1000 of the screw-shaped cutting workpiece according to the present invention, the screw-shaped cutting workpiece 10 supplied to the jig 311 is an input unit in the form of a pallet P in which a plurality of pieces are stored. (100). In addition, the plurality of threaded cutting products 10 accommodated in the input pallet P are individually supplied to the plurality of jigs 311 by the first transfer unit 200.

The input unit 100 and the first transfer unit 200 are formed as follows.

The input part 100 is a bin in which the supply of the first pallet input conveying member 110 and the thread-shaped cutting work product 10 for transferring a pallet P in which a plurality of thread-shaped cutting work products 10 are stored are completed. It includes a first pallet discharge transfer member 120 for discharging the pallet (P). In addition, in the first transfer part 200, the first robot arm 230 grips the pallet-shaped cutting workpiece 10 stored in the pallet P or the pallet P input by the input unit 100 (把持) Transfer the first elevating member 220 and the pallet P held by the first robot arm 230 to the first pallet discharge transfer member 120 or the first robot arm 230 It includes a first conveying member 210 for conveying the cutting work 10 of the screw shape gripped by the jig (311). That is, the first robot arm 230 is one of the plurality of threaded cutting products 10 accommodated in the pallet P conveyed by the first pallet input conveying member 110 of the input unit 100. Grip. When the first robot arm 230 grips one thread-shaped cutting product 10, after the first robot arm 230 is elevated by the first lifting member 220, the first transfer member 210 By moving through, the threaded cutting product 10 is supplied to the jig 311 on the rotary feed jig stage 310. By performing this process a plurality of times, the threaded cutting product 10 that is input through the input unit 100 is supplied to the inspection unit 300 through the first transfer unit 200. As described above, when the transfer by the first transfer member 210 is completed, the first robot arm 230 places the cutting work 10 in a screw shape.

In addition, when all of the threaded cutting products 10 that have been stored are supplied, the first robot arm 230 grips the empty pallet P located on the first pallet input transfer member 110, and the pallet ( After the first elevating member 220 elevates the first robot arm 230 holding the P), the first robot arm 230 is moved by the first conveying member 210 to the first pallet discharging conveying member ( 120) It will be transferred to the side. When the transfer by the first transfer member 210 is completed as described above, the first robot arm 230 places the empty pallet P on the first pallet discharge transfer member 120. Thereafter, the first pallet discharge transfer member 120 discharges the empty pallet P.

On the other hand, in the surface defect inspection apparatus 1000 of the thread-shaped cutting workpiece according to the present invention, the surface-finished cutting workpiece 10 by the inspection unit 300 is the second transfer unit 400 from the jig 311 ) Is individually transferred, and the cut thread-shaped cutting product 10 is determined to be good or bad by the inspection result of the inspection unit 300 and discharged through the discharge unit 500.

The configuration of the second transfer part 400 and the discharge part 500 is formed as follows.

The second transfer part 400 includes a second lifting arm 420 and a second robot arm 430 that lifts after the second robot arm 430 grips the threaded cutting product 10 from the jig 311. It includes a second transfer member 410 for conveying the cutting work 10 in the form of a screw gripped by) to the discharge unit 500. In addition, the discharge unit 500, the second pallet input conveying member 510 for conveying the empty pallet (P), and the conveyed empty pallet (P) are respectively supplied by the second robot arm 430 It includes a good quality pallet discharge member 520 or a bad pallet discharge member 530. That is, when the empty pallet P is input by the second pallet input conveying member 510, the second robot arm 430 grips the empty pallet P. The second robot arm 430 holding the empty pallet P is lifted by the second lifting member 420, and then the good pallet discharge member 520 or the bad pallet is discharged by the second conveying member 410. It is transferred to the member 530 side. When the transfer is completed, the second robot arm 430 puts the empty pallet P that was held on the good pallet discharge member 520 or the bad pallet discharge member 530.

Next, the second robot arm 430 is gripped by the jig 311 of the screw-shaped cutting workpiece 10 whose surface inspection is completed by the inspection unit 300. When the second robot arm 430 grips the threaded cutting workpiece 10, after the second robot arm 430 is lifted by the second lifting member 420, through the second transfer member 410 Moving to supply the good-quality pallet discharge member 520 or the defective pallet discharge member 530, the thread-shaped cutting product 10. By performing this process a plurality of times, through the inspection unit 300, the screw-shaped cutting product 10 whose surface inspection is completed is supplied to the discharge unit 500 via the second transfer unit 400. When the transfer by the second transfer member 410 is completed as described above, the second robot arm 430 is placed on the gripped cutting-shaped cutting product 10.

At this time, when the good quality pallet discharge member 520 is received by a predetermined number of the thread-shaped cutting workpiece 10, which is determined as a good quality by the inspection unit 300, is supplied in the pallet P previously supplied (in the pallet P) When full) the pallet P is discharged, and the defective pallet discharge member 530 is provided with a predetermined number of pallets P in which the threaded cutting product 10 determined as defective by the inspection unit 300 is supplied. When stored (when filled in the pallet P), the pallet P is discharged.

On the other hand, a predetermined number of threaded cutting products 10 are stored in the pallet P located on the good pallet discharge member 520 or the bad pallet discharge member 530 (full in the pallet P) and discharged. When, the second robot arm 430 grips the empty pallet P located on the second pallet input conveying member 510, and lifts the second robot arm 430 holding the pallet P a second time. After the member 420 is elevated, it is transferred to the good pallet discharge member 520 or the bad pallet discharge member 530 by the second transfer member 410. When the transfer by the second transfer member 410 is completed as described above, the second robot arm 430 places the empty pallet P on the good pallet discharge member 520 or the bad pallet discharge member 530.

In this embodiment, the first pallet input transfer member 110 and the first pallet discharge transfer member 120 of the input unit 100 are formed in the longitudinal direction with respect to the front of the housing table 600, the first lifting The member 220 is formed in the vertical direction, and the first transfer member 210 is formed in the horizontal direction. Likewise, the second pallet input conveying member 510 of the discharge part 500, the good-quality pallet discharge member 520, and the bad pallet discharge member 530 are formed in the longitudinal direction based on the front surface of the housing table 600. The second lifting member 420 is formed in the vertical direction, and the second transfer member 410 is formed in the horizontal direction.

Thereby, the surface defect apparatus 1000 of the screw-shaped cutting workpiece according to the present invention is inspected by the inspection unit 300 that photographs the entire surface of the screw-shaped cutting workpiece 10 through a plurality of cameras.

10 is a view showing the configuration of an inspection unit in the surface defect inspection device of a screw-shaped cutting product according to a second embodiment of the present invention.

In the surface defect inspection apparatus 1000 of the thread-shaped cutting workpiece according to the second embodiment, the input section 100, the first transfer section 200, the second transfer section 400, and the discharge section 500 , The configuration of the housing table 600 is the same as the configuration of the surface defect inspection apparatus 1000 of the threaded cutting product according to the first embodiment, and the configuration of the inspection unit 300 is different.

Referring to FIG. 10, the inspection unit 300 ′ of the surface defect inspection apparatus 1000 of a screw-shaped cutting workpiece according to the second embodiment of the present invention includes a base plate 320, a jig 322, and a plurality of It includes a camera (323, 324, 325, 326, 327).

Unlike the first embodiment, the second embodiment uses a base plate 320 instead of the rotation feed jig stage 310. The vertical support plate 321 is supported on the base plate 320 so as to be adjustable in height. In addition, a jig 322 is positioned on the vertical support plate 321, and a threaded cutting product 10 is supplied by the first transfer unit 200 on the jig 322. At this time, the plurality of cameras 323, 324, 325, 326, and 327 photograph the threaded cutting product 10 at a plurality of positions, respectively.

In more detail, the base plate 320 is a basic panel for supporting the jig 322. In this embodiment, the cuboid-shaped base plate 320 is described for ease of description, but is not limited thereto. The shape of the base plate 320 is a column or triangular column, square column, pentagonal column, hexagonal column. It is not necessary to form a polygonal pillar of the back.

The jig 322 is positioned on the vertical support plate 321 supported on the base plate 320 so as to be adjustable in height. Typically, the jig mounting portion is fixedly installed on the upper portion of the vertical support plate 321 as a fixing member, and the jig is placed in the jig mounting portion and supported.

The jig 322 supported on the base plate 320 is positioned in a region where a threaded cutting product 10 is supplied from a first transfer part 200 to be described later. The thread-shaped cutting work 10 supplied from the first transfer part 200 is positioned on the upper surface of the jig 322.

In addition, in the surface defect inspection apparatus 1000 of the thread-shaped cutting workpiece according to the present embodiment, the inspection unit 300 ′ includes an upper portion, a lower portion, an upper tooth surface 12 of the thread-shaped cutting workpiece 10, The lower tooth surface 13 and the tooth surface 15 are photographed. This is to precisely inspect the thread-shaped cut-out workpiece 10 that is judged as a good product when it has a smooth surface free of surface defects, stains, scratches, scratches, or combs. In order to accurately photograph the cutting work 10 in the form of a screw, it is preferable to photograph with a plurality of cameras, and at least 5 or more cameras are required. That is, the first camera 323 photographs the upper portion of the thread-shaped cutting product 10, the toothbrush 15 photographs the second camera 324, and the lower tooth surface 13 photographs the third camera 327. Is photographed, the upper tooth surface 12 is photographed by the fourth camera 326, and the lower portion is photographed by the fifth camera 325, so that all surfaces of the thread-shaped cutting workpiece 10 are photographed. As a result, the thread-shaped cutting work product 10 determined as a good product is applied to parts of various fields (for example, a worm gear).

In addition, the second camera 324, the third camera 327, and the second camera 324, so that the upper tooth surface 12, the tooth 15 and the lower tooth surface 13 of the thread-shaped cutting product 10 can be photographed. 4 Cameras 3326 are fixed to each position. At this time, the photographing position of the camera photographing the upper tooth surface 12, the tooth surface 15, and the lower tooth surface 13 may be changed. That is, the second camera 324 photographs the teeth 15, the third camera 327 photographs the lower teeth 13 rather than the upper teeth 12, and the fourth camera 326 the lower teeth ( 13) can be photographed, not the upper tooth surface 12. However, the lower portion of the threaded cutting workpiece 10 is preferably not changed by the first transfer unit 200, since the threaded cutting workpiece 10 must be photographed during transfer. Similarly, since the upper portion of the screw shape is to be photographed during the transfer of the thread-shaped cutting workpiece 10 by the second transfer part 400, it is preferable not to change the photographing position. In addition, the screw-shaped cutting workpiece 10 conveyed by the first transfer unit 200 is photographed when the lower surface is photographed by the first camera 323 during transfer, and alignment is made to be accurately supplied to the jig 322 later. do.

On the other hand, in the surface defect inspection apparatus 1000 of the screw-shaped cutting workpiece according to the second embodiment, the jig 322 is rotated at the same pitch as the screw-shaped cutting workpiece 10 by a jig driving unit (not shown) Ascend. Here, the pitch refers to a distance traveled when a screw rotates one turn or a distance between a screw thread and a mountain. That is, when the jig 322 is raised and lowered by 2 pitches, the threaded cutting product 10 is also elevated by 2 pitches. Accordingly, when the distance the jig 322 is elevated is measured by a sensor or the like, the shooting distance of the upper tooth surface 12 or the lower tooth surface 13 photographed by the inspection unit 300 ′ in the threaded cutting product 10 is measured. You can know.

11 is a view showing the configuration of an inspection unit in a surface defect inspection apparatus for a thread-shaped cutting product according to a third embodiment of the present invention.

In the surface defect inspection apparatus 1000 of the thread-shaped cutting workpiece according to the third embodiment, the input section 100, the first transfer section 200, the second transfer section 400, and the discharge section 500 , The configuration of the housing table 600 is the same as the configuration of the surface defect inspection apparatus 1000 of the threaded cutting product according to the first embodiment, and the configuration of the inspection unit 300 is different.

Referring to FIG. 11, the inspection unit 300 ″ of the surface defect inspection apparatus 1000 of a screw-shaped cutting workpiece according to the third embodiment of the present invention includes a base plate 330, a jig 332, It includes a plurality of cameras (333, 334).

Unlike the first embodiment, the third embodiment uses the base plate 330 instead of the rotation feed jig stage 310. The vertical support plate 331 is supported on the base plate 330 to be adjustable in height. In addition, a jig 332 is positioned on the vertical support plate 331, and on the jig 332, a thread-shaped cutting product 10 is supplied by the first transfer unit 200. At this time, a plurality of cameras (333, 334) is a camera 334 for photographing while moving the cutting work 10 of the screw shape from the top to the bottom, and a camera (333) for shooting the bottom of the cutting work 10 of the screw shape ) To shoot at each location.

In the third embodiment, the configuration of the inspection unit 300 ″ is different from the second embodiment, and the other configuration is the same.

In more detail, in the surface defect inspection apparatus 1000 of the screw-shaped cutting workpiece according to the present embodiment, the inspection unit 300 ″ includes the upper, lower, and upper tooth surfaces ( 12), the lower tooth surface 13 and the toothbrush 15 are photographed. This is to precisely inspect the thread-shaped cut-out workpiece 10 that is judged as a good product when it has a smooth surface free of surface defects, stains, scratches, scratches, or combs. In order to accurately photograph the threaded cutting work 10, it is preferable to photograph with a plurality of cameras, and at least two or more cameras are required. That is, the first camera 333 photographs the lower portion of the threaded cutting product 10, and the toothbrush 15, the lower tooth surface 13, the upper tooth surface 12, and the upper portion of the second camera 334 ) Shoots. At this time, the second camera 334 photographs while moving the screw-shaped cutting product 10 from the top to the bottom, so that all surfaces of the screw-shaped cutting product 10 are photographed. That is, the first camera 333 photographing the lower portion of the thread-shaped cutting workpiece 10 does not change the shooting position since the thread-shaped cutting workpiece 10 must be photographed during the transfer by the first transfer unit 200. It is preferred. However, since the second camera 333 needs to photograph the tooth 15 and the lower tooth surface 13, the upper tooth surface 12, and the upper portion of the thread-shaped cutting workpiece 10, the second camera 334 Is taken while moving the threaded cutting 10 from the top to the bottom. As a result, the thread-shaped cutting work product 10 determined as a good product is applied to parts of various fields (for example, a worm gear).

On the other hand, even in the surface defect inspection apparatus 1000 of the thread-shaped cutting workpiece according to the third embodiment, the jig 332 is rotated at the same pitch as the thread-shaped cutting workpiece 10 by a jig driving unit (not shown) Ascend. Here, the pitch refers to a distance traveled when a screw rotates one turn or a distance between a screw thread and a mountain. That is, when the jig 332 is raised and lowered by 2 pitches, the threaded cutting product 10 is also elevated by 2 pitches. By this, when the distance the jig 332 elevates is measured by a sensor or the like, the shooting distance of the upper tooth surface 12 or the lower tooth surface 13 taken by the inspection unit 300 in the threaded cutting product 10 is known. It becomes possible.

On the other hand, the housing table 600 includes a driving unit for rotating the rotary feed jig stage 310, and a driving unit for rotating the jigs 311, 322, and 332 according to each embodiment, and each driving unit, Also included is a control unit for controlling the first robot arm 230, the first lifting member 220, the second robot arm 40, and the second lifting member 420 of the first transfer unit 200, respectively. .

Next, Figure 12 is a flow chart showing the overall flow of the surface defect inspection method of the thread-shaped cutting workpiece according to the present invention.

Referring to FIG. 12, a method for inspecting surface defects of a threaded cutting product according to the present invention is performed in five steps.

In the first step (S100 ), the pallet P in which the plurality of screw-shaped cutting products 10 are stored is input through the input unit 100.

In the second step (S200), the plurality of threaded cutting products 10 accommodated in the pallet P are fed through the first transfer unit 200.

In the third step (S300), the surface of the transferred screw-shaped cutting product 10 is inspected by the inspection unit 300.

At this time, the inspection unit 300 photographs the upper part, the lower part, the upper tooth surface 12, the lower tooth surface 13, and the toothpaste 15, respectively, of the screw-shaped cutting workpiece 10 through a plurality of cameras.

In the fourth step (S400 ), the cutting work 10 having a screw shape, which has been inspected by the inspection unit 300, is transferred by the second transport unit 400.

In the fifth step (S500), the transferred screw-shaped cutting product 10 is judged as a good product or a bad product by the inspection result of the inspection unit 300 and discharged through the discharge unit 500.

By this method, the entire surface of the threaded cutting product is inspected using the captured image.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present invention.

100: input
110: 1st pallet input transfer member
120: first pallet discharge transfer member
200: first transfer unit
210: first transfer member
220: first lifting member
230: first robot arm
300: inspection unit
310: rotating feed jig stage
311: jig
400: second transfer unit
410: second transfer member
420: second lifting member
430: second robot arm
500: outlet
510: second pallet input transfer member
520: Good quality pallet discharge member
530: Bad pallet discharge member
1000: Surface defect inspection device for threaded cutting products

Claims (13)

A rotating rotary feed jig stage,
A plurality of jigs positioned at predetermined intervals along the outer periphery of the rotary feed jig stage;
A thread-shaped cutting product to be supplied on each of the plurality of jigs,
An apparatus for inspecting surface defects of a threaded cutting product, including an inspection unit having a plurality of cameras that respectively photograph the threaded cutting product at a plurality of locations. Base plate,
A vertical support plate supported on the base plate for height adjustment,
A jig positioned on the vertical support plate,
A threaded cutting product supplied on the jig,
An apparatus for inspecting surface defects of a threaded cutting product, including an inspection unit having a plurality of cameras that respectively photograph the threaded cutting product at a plurality of locations. Base plate,
A vertical support plate supported on the base plate for height adjustment,
A jig positioned on the vertical support plate,
A threaded cutting product supplied on the jig,
An apparatus for inspecting surface defects of a screw-shaped cutting workpiece, including an inspection unit having a camera for photographing the screw-shaped cutting workpiece while moving from top to bottom and a camera for photographing the bottom of the screw-shaped cutting workpiece. The method according to any one of claims 1 to 3,
The inspection unit is a surface-shaped defect inspection device of the screw-shaped cutting workpiece photographing the upper, lower, upper and lower teeth, and the lower teeth of the threaded cutting product. The method according to any one of claims 1 to 3,
The jig is a surface defect inspection device for a screw-shaped cutting workpiece that moves up and down at the same pitch as the screw-shaped cutting workpiece. The method according to any one of claims 1 to 3,
The thread-shaped cutting workpiece supplied to the jig is input through the input unit in the form of a pallet in which a plurality of pieces are stored,
A device for inspecting surface defects of a threaded cutting product, which is individually supplied to the jig by a first transfer unit for a plurality of the threaded cutting products stored in the pallet. The method of claim 6,
The input unit,
A first pallet input conveying member for conveying pallets in which a plurality of the threaded cutting products are stored,
An apparatus for inspecting surface defects of a screw-shaped cutting workpiece including a first pallet discharge conveying member for discharging the empty pallet on which the supply of the screw-shaped cutting workpiece is completed. The method of claim 6,
The first transfer unit,
A first elevating member for holding and elevating the pallet or the cut-to-cut cutting product stored in the pallet inputted by the input unit by a first robot arm;
And a first conveying member for conveying the pallet held by the first robot arm to a pallet discharge conveying member or for conveying the threaded cutting product held by the first robot arm to the jig,
When the transfer by the first transfer member is completed, a surface defect inspection device of a screw-shaped cutting workpiece placed by the first robot arm on the gripped pallet or the screw-shaped cutting workpiece. The method of claim 4,
The screw-shaped cutting workpiece, which has been inspected by the inspection unit, is individually transferred from the jig by the second transfer unit,
The conveyed threaded cutting product is judged to be good or bad by the inspection result of the inspection unit and discharged through the discharge unit, and when discharged as the defect, it is classified according to the type of defect and discharged. Bad inspection device. The method of claim 9,
The second transfer unit,
A second lifting member for lifting the threaded cutting product from the jig after the second robot arm grips;
And a second conveying member for conveying the threaded cutting product held by the second robot arm to the discharge part,
When the transfer by the second transfer member is completed, the surface defect inspection device of the thread-shaped cutting workpiece placed by the second robot arm on the gripped cutting-shaped workpiece. The method of claim 9,
The discharge unit,
A second pallet input conveying member for conveying empty pallets,
And a good pallet discharge member or a bad pallet discharge member, each of which is supplied with the empty pallets, which is fed by the second robot arm,
The good-quality pallet discharge member discharges the pallet when the predetermined number of the cut-shaped cutting products, which are determined to be good quality by the inspection unit, are stored in the pallet, which has been previously supplied,
The defective pallet discharging member is a surface defect inspection device for a screw-shaped cutting workpiece that discharges the pallet when the predetermined number of the cut-shaped cutting products determined as defective by the inspection unit is stored in the pallet. A first step (S100) for introducing a pallet containing a plurality of threaded cutting products through the input unit,
A second step (S200) of transferring a plurality of the threaded cutting products stored in the input pallet through a first transfer unit;
A third step (S300) of inspecting the surface of the conveyed threaded cutting product by an inspection unit;
A fourth step (S400) of transferring the threaded cutting product, which has been inspected by the inspection unit, by the second transfer unit;
Method for inspecting the surface defects of the cut workpiece, including a fifth step (S500) of determining the transferred threaded cutting workpiece as a good or bad product according to the inspection result of the inspection unit and discharging it through the discharge unit. The method of claim 12,
The inspection unit inspection method of the surface defects of the screw-shaped cutting workpiece photographing the upper, lower, upper and lower teeth, and the lower teeth of the threaded cutting product.

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