KR20150117726A - Jig for checking defect of forged parts of rotational state - Google Patents

Jig for checking defect of forged parts of rotational state Download PDF

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Publication number
KR20150117726A
KR20150117726A KR1020140042762A KR20140042762A KR20150117726A KR 20150117726 A KR20150117726 A KR 20150117726A KR 1020140042762 A KR1020140042762 A KR 1020140042762A KR 20140042762 A KR20140042762 A KR 20140042762A KR 20150117726 A KR20150117726 A KR 20150117726A
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South Korea
Prior art keywords
failure
fixed
forged product
fixed bed
rod
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KR1020140042762A
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Korean (ko)
Inventor
서경원
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동은단조(주)
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Priority to KR1020140042762A priority Critical patent/KR20150117726A/en
Publication of KR20150117726A publication Critical patent/KR20150117726A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

The jig for checking the failure of the rotating forgings of the present invention comprises: a fixed bed; A forged product rotating unit provided on the fixed bed and capable of rotating the forged product in a fixed state; And a failure check unit provided in the fixed bed to check the appearance size defects of the forgings in a state where the forgings are rotated by the forgings rotating unit. According to the present invention, by checking the appearance size defects such as the inner diameter and the outer diameter while rotating the forged product using the forged product rotation unit, the operator can check the defects such as the outer diameter, the inner diameter and the corner portion of the forged product quickly and accurately.

Description

JIG FOR CHECKING DEFECT OF FORGED PARTS OF ROTATIONAL STATE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for checking a defect in a rotating forged product, and more particularly, to a jig for checking a defect in a rotating state forgery product by checking the appearance size defects such as an inner diameter and an outer diameter while rotating a forgings, Of the jig.

Generally, in the case of a forgings applied to a transmission (a first gear, a second gear, a reverse gear, or the like) of an automobile, not only a tooth profile is provided but also an inner diameter portion for coupling with a shaft or the like .

At this time, if a shape defect occurs due to a forging operation of the composite toothed portion, it can cause serious problems such as inability to operate such as transmission.

Therefore, in order to determine whether or not the shape of the composite tooth profile is defective, expensive laser inspection equipment or the like must be introduced, inspected and checked, and full inspection must be performed.

In the case of a forged article having such a composite tooth profile as described above, the concentricity between the inner diameter portion and the tooth portion is also an important check point.

In general, during the working and forging operations, the composite tooth portion and the inner diameter portion are simultaneously advanced to satisfy a predetermined concentricity dimension, and when the composite tooth portion is forged or defective, the defects of the inner diameter portion . From the above point of view, it is possible to determine whether there is a defect in the composite tooth portion by determining the presence or absence of defects by measuring the size of the inner diameter portion.

However, in order to distinguish a conventional forged product from a regular product and a non-standard product, the quality of the product is managed using not only a measurement method using the naked eye but also a precision measurement device using a laser or the like.

In the case of forged parts with simple shapes and dimensions, it is possible to manage them by hand, but in the case of precision parts used in automobile transmission and the like, it is necessary to use expensive precision measuring equipment to manage the forgings. The cost of manufacturing the equipment and the problems of management and the manufacturing cost of the product due to the need to construct a part of the production process of the product, I have to.

Therefore, there is a need for a device that can reduce manufacturing cost due to the mass production of forged products having a composite tooth profile, satisfy the requirement for simplification of the working process, and satisfy the accuracy and simplification of the measurement at the same time.

An object of the present invention is to provide a jig for checking a defect in a rotating state forgings which can check a defect quickly and accurately by checking the appearance size defects such as an inner diameter and an outer diameter while rotating a forgings.

An object of the present invention is to provide a fixed bed; A forged product rotating unit provided on the fixed bed and capable of rotating the forged product in a fixed state; And a failure check unit provided in the fixed bed to check the appearance size defects of the forgings in a state in which the forgings are rotated by the forged product rotating unit.

The forging product rotating unit includes: a stationary chuck capable of fixing and releasing the forged product; And a rotating shaft portion for rotating the fixed chuck portion on the fixed bed, wherein the rotating shaft portion is freely rotatable with respect to the fixed bed.

And a driving motor connected to the rotary shaft to rotate the rotary shaft.

Wherein the failure check unit includes an inner diameter failure check unit movably provided on the fixed bed to check the inner diameter defects of the forgings; And an outer diameter defect check unit movably provided on the fixed bed to check an outer diameter defect of the forgings.

The defective check unit may include a corner defect check unit movably provided on the fixed bed to check a defect in the upper edge portion of the forged product.

Wherein the inner diameter defect check unit comprises: a guide rod provided on the fixed bed in plurality; A moving block movably provided along the guide rod; A fixed bar fixed to the moving block; A link body connected to the fixed bar and having a hollow inside and having a lever support at one end; A failure sensing rod disposed inside the link body so as to be movable along a longitudinal direction of the link body; A failure detecting lever which is hingably rotatably provided on the lever support and protrudes on an end thereof so as to be contactable with an inner circumferential surface of the forged product and which pushes the failure detecting rod when an inner circumferential surface of the forged product is defective; And a failure detection system provided at the other end of the link body so as to be able to contact the failure detection rod and displaying the inner diameter defect of the forged article according to the degree of contact with the failure detection rod.

The link body may further include a bush connected to the fixed bar and movable along the longitudinal direction of the fixed bar.

Wherein the outer diameter defect check unit comprises: a guide rod provided on the fixed bed in plurality; A moving block movably provided along the guide rod; A fixed bar fixed to the moving block; A link body connected to the fixed bar and having a hollow inside thereof; A failure sensing rod disposed inside the link body so as to be movable along a longitudinal direction of the link body; A failure detecting lever connected to an end of the failure detecting rod so as to be movable at the same time as the failure detecting rod and moving the failure detecting rod when the outer circumferential surface of the forging product is defective; And a failure detection system provided at the other end of the link body so as to be able to contact the failure detection rod and displaying the outer diameter defect of the forged product according to the degree of contact between the failure detection rod and the failure detection rod.

And a plurality of fixing bolts for fixing the moving block to restrict movement of the moving block with respect to the guide rod may be further provided.

The jig for checking the defects of the rotationally-forged forged product according to the embodiment of the present invention checks the appearance size defects such as the inside diameter and the outside diameter while rotating the forged product using the forged product rotating unit so that the operator can check the outside diameter, inside diameter, Can be checked more quickly and accurately.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing a jig for checking a failure of a rotating forgings according to an embodiment of the present invention. FIG.
2 is a plan view of Fig.
Fig. 3 and Fig. 4 are diagrams showing an operating state of the partial configuration of Fig.
Fig. 5 is a view showing a state in which a configuration for discriminating defective edge portions is added in Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Wherein like reference numerals refer to like elements throughout.

FIG. 2 is a plan view of FIG. 1; FIGS. 3 and 4 are views showing an operation state of a partial configuration of FIG. 1; FIG. And Fig. 5 is a view showing a state in which a configuration for discriminating defective edges is added in Fig.

A jig (hereinafter referred to as "jig") for checking a defect of a rotating forged product according to a preferred embodiment of the present invention is for checking the appearance size defects of a forged product, and more specifically, The defect can be checked more quickly and accurately.

1 and 2, a jig according to an embodiment of the present invention includes a fixed bed 100, a forged product rotating unit 100 provided on the fixed bed 100 and capable of rotating the forged product 10 in a fixed state, And a bad check unit 300 provided in the fixed bed 100 to check the appearance size defects of the forged product 10 in a state where the forged product 10 is rotated by the forged product rotating unit 200 do.

That is, in the embodiment of the present invention, the size of various parts such as the inner diameter, the outer diameter and the edge of the forgings of the forgings is checked in the state of rotating the forgings so that a predetermined number of points are selected in the non- The defect readout can be performed more accurately as well as quickly. In this embodiment, the forgings 10 may have a shape similar to a pipe.

The fixed bed 100 may be provided as a kind of base plate on the work table of the workplace.

The forged product rotating unit 200 is provided so as to be capable of locking or unlocking the forged product 10. For example, when the forged product 10 is locked in a state where the forged product 10 is rotated about its central axis .

1 and 2, the forged product rotating unit 200 includes a fixed chuck 210 which can fix and unlock the forged product 10, and a fixed chuck 210 rotatably mounted on the fixed bed 100 (Not shown).

The fixed chuck portion 210 includes a plurality of fixed chuck 211 and a fixed chuck block 212 to which the fixed chuck 211 is coupled. The fixing chuck 211 is applicable to any one of a single chuck, an interlock chuck, and a double chuck.

The rotary shaft portion 220 is connected to the lower portion of the fixed chuck portion 210 to rotate the fixed chuck portion 210 with respect to the central axis thereof and is freely rotatable with respect to the upper surface of the fixed bed 100. For this purpose, a bearing or the like for supporting the rotation of the rotary shaft 220 is further provided.

That is, in this embodiment, the operator can rotate the fixed chuck portion 210 while pushing or turning the outer surface of the fixed chuck portion 210 by hand, thereby rotating the forged object 210 in the fixed state by the plurality of fixed chucks 211 It is possible to check the outer size of the forged product 10 throughout the circumferential direction while rotating the rotating shaft 10.

Meanwhile, as described above, the fixed chuck portion 210 may be manually rotated by an operator, or rotated automatically by a separate rotational force.

To this end, the jig according to the present embodiment may further include a driving motor (not shown) connected to the rotation axis part 220 to rotate the rotation axis part 220. In this case, the driving motor (not shown) may be provided on the lower side of the fixed bed 100 and may be directly connected to the rotary shaft portion 220, or may be connected through power transmission means such as a belt-pulley or a gear module. Here, it is preferable that the rotation torque of the drive motor (not shown) is transmitted to the rotary shaft portion 220 in a state in which the rotation torque is lower than the initial torque. For this purpose, It is preferable to further provide the above.

The defective check unit 300 includes an inner diameter defect check unit 310 that is movably provided on the fixed bed 100 and checks the inner diameter defects of the forged product 10 and an inner diameter defect check unit 310 that is provided movably on the fixed bed 100, And an outer diameter defect check unit 330 for checking the outer diameter defect of the outer casing 10.

The defective check unit 300 includes a corner defect check unit 350 that is movably provided on the fixed bed 100 and checks a defect in the upper edge portion of the forged product 10. [

First, the inner diameter defect check unit 310 and the outer diameter defect check unit 330 will be described.

As shown in Figs. 1 and 3, the inner diameter defect check section 310 determines whether or not the inner peripheral surface of the forgings 10 is within the allowable error range along the design dimension.

The inner diameter defect check part 310 includes a guide rod 311 provided on the fixed bed 100 in a plurality, a moving block 312 provided to be movable along the guide rod 311, a moving block 312, A link body 315 connected to the fixing bar 313 and hollow inside and having a lever support 316 at one end thereof, a link body 315 disposed inside the link body 315, 315 which are provided so as to be capable of hinging on the lever support 316 and are provided with contact protrusions 319 protruding from the end portions so as to be contactable with the inner circumferential surface of the forgings 10, A failure detection lever 318 for pushing the failure detection rod 317 when the inner circumferential surface defect of the forged product 10 occurs and a failure detection lever 318 for pushing the failure detection rod 317 so that the failure detection rod 317 can be brought into contact with the other end of the link body 315 So that the defective inner diameter of the forged product 10 can be displayed on the display 317 according to the degree of contact with the defective detection rods 317 That includes a defect detection system 321.

The pair of guide rods 311 are spaced apart from each other. The movable block 312 is provided to be linearly reciprocally movable along the pair of guide rods 311.

The fixed bar 313 is provided so as to extend in the upward direction from the moving block 312. The link body 315 is connected to the fixing bar 313, and a hollow is formed inside.

In this embodiment, it is preferable that the link body 315 is provided so as to be movable up and down along the longitudinal direction of the fixing bar 313 for position adjustment for measuring the inner diameter of the forged product 10. [ 1 and 3, a bush 314 connected to the fixed bar 313 and movable along the longitudinal direction of the fixed bar 313 is connected to the link body 315, . The bush 314 may be fixed to the fixed bar 313 through a separate screw so as to be unmovable, or may be movable up and down by unscrewing the screw. In this embodiment, the link body 315 is provided at one end thereof with a lever support 316 of a substantially 'B' shape.

The failure detection rod 317 is provided inside the link body 315 so as to be movable along the longitudinal direction of the link body 315. One end of the failure detecting rod 317 is maintained in a state of normally contacting with the sensitive guiding portion of the failure detecting system 321 to be described later or at a slightly spaced position. The other end of the failure detection rod 317 is projected a certain distance from the link body 315 so as to be pushable by the failure detection lever 318. [

The failure detection lever 318 is hinged freely rotatably on the lever support 316. A contact protrusion 319 protrudes from the end of the failure detection lever 318 so as to be in contact with the inner circumferential surface of the forged product 10.

The operator moves the movable block 312 along the guide bar 311 to an appropriate position and then moves the bush 314 up and down along the fixed bar 313 to adjust the height appropriately so that the contact protrusion 319 is moved to the forged product 10 To be brought into contact with the inner circumferential surface of the housing.

In this state, the operator rotates the fixed chuck 210 manually or automatically by a driving motor (not shown). At this time, when the inner circumferential surface of the forged product 10 is provided with a defective structure (for example, a structure different from the design dimension) different from the design dimension, the contact protrusion 319 comes into contact with the defective structure, The lever 318 rotates counterclockwise in the drawing and pushes the failure detecting rod 317 by a predetermined amount or more.

In this embodiment, the failure detection system 321 is provided so as to be able to contact the failure detection rod 317 at the other end of the link body 315 and to be in contact with the failure detection rod 317, The inner diameter defect is displayed. More specifically, the end of the failure detecting rod 317 pushed by the failure detecting lever 318 pushes the returning guide of the failure detecting system 321 by a predetermined amount or more. At this time, the failure detecting system 321 pushes Is displayed. The operator confirms this with naked eyes and judges that the forged product (10) has a bad inside diameter if it exceeds the setting range. Although the failure detection system 321 is shown as an analog type in the related drawings, the failure detection system 321 is not necessarily limited to this, and the failure detection system 321 may be applied as a digital type in which the pushed displacement is represented by a numeral. On the other hand, a spring or the like is provided as a resilient means on the gum guidance part of the failure detection system 321 so that the failure detection rod 317 can be pushed to an initial position to be repeatedly checked.

As described above, the operator moves the movable block 312 along the guide bar 311 to an appropriate position, and then moves the bush 314 up and down along the fixed bar 313 to adjust the height appropriately, The fixing chuck portion 210 is manually rotated or automatically rotated by a driving motor (not shown) so that the pressing portion 319 comes into contact with the inner circumferential surface of the forged product 10. If the moving block 312 is not fixed to the guide rod 311 for checking the inner circumferential surface defect state at this time and the movable block 312 is moved along the longitudinal direction without being fixed to the guide rod 311, It becomes impossible to accurately determine the state.

In order to solve this problem, in the present embodiment, as shown in Fig. 1, a plurality of fixing bolts 322 for fixing the moving block 312 to restrict the movement of the moving block 312 with respect to the guide rod 311 ).

That is, the operator manually moves the moving block 312 along the guide rod 311 to a proper position, and then fixes the moving block 312 through the fixing bolt 322 for measuring the inner circumferential surface of the forged product. Here, the moving block 312 is provided with a plurality of fastening holes so that a plurality of fastening bolts 322 can be inserted therein, and the fastening bolts 322 are inserted into the fastening holes so that the end portions thereof contact the guide rods 311. For example, the operator can fix the moving block 312 by releasing the fixing bolt 322 in the clockwise or counterclockwise direction, or release the fixed state.

Next, as shown in Figs. 1 and 4, the outer diameter defect check section 330 judges whether or not the outer peripheral surface of the forged article 10 is within the tolerance range along the designed dimension.

The outer diameter defect check section 330 includes a guide rod 331 provided on the fixed bed 100 in plural numbers, a moving block 332 movable along the guide rod 331, A link body 335 which is connected to the fixing bar 333 and has a hollow inside thereof and a movable body 335 which is provided inside the link body 335 so as to be movable along the longitudinal direction of the link body 335 The failure detecting rod 337 is connected to the end of the failure detecting rod 337 so as to be movable at the same time as the failure detecting rod 337 and the failure detecting rod 337. When the failure of the outer circumferential surface of the forged product 10 occurs, The failure detecting lever 338 and the link body 335 can be brought into contact with the failure detecting rod 337 at the other end so as to be able to contact with the failure detecting rod 337 and to display the failure of the outer diameter of the forged product 10 And a sensing system 341.

The pair of guide rods 331 are spaced apart from each other, and the movable block 332 is linearly reciprocally movable along the pair of guide rods 331.

The fixing bar 333 is provided so as to extend in the upward direction from the moving block 332. The link body 335 is connected to the fixing bar 333, and a hollow is formed inside.

In this embodiment, the link body 335 is preferably provided so as to be movable up and down along the longitudinal direction of the fixing bar 333 for position adjustment for measurement of the outer diameter of the forged product 10. [ 1 and 4, a bush 334 connected to the fixed bar 333 and movable along the longitudinal direction of the fixed bar 333 is connected to the link body 335, . The bush 334 may be fixed so as not to move with respect to the fixed bar 333 through a separate screw, or may be made movable up and down by unscrewing the screw.

The failure detecting rod 337 is provided inside the link body 335 so as to be movable along the longitudinal direction of the link body 335. The failure detection lever 338 is a portion that substantially contacts the outer peripheral surface of the forged product 10 and detects a failure and is connected to the end of the failure detection rod 337 so as to be movable at the same time as the failure detection rod 337, 10, the failure detecting rod 337 is moved.

Specifically, the one end of the failure detecting rod 337 is maintained in a state of normally contacting with the sensitive guiding portion of the failure detecting system 341 to be described later, or the other end thereof is fixed to the failure detecting lever 338 .

The operator moves the movable block 332 along the guide rod 331 to an appropriate position and then moves the bush 334 up and down along the fixed bar 333 to adjust the height of the movable block 332, 338 come into contact with the outer circumferential surface of the forged product 10.

In this state, the operator rotates the fixed chuck 210 manually or automatically by a driving motor (not shown). In this case, when the outer peripheral surface of the forged product 10 is provided with a defective structure (for example, a protrusion or the like having a different dimension from the design dimension) different from the design dimension, the defective sensing lever 338 comes into contact with such defective structure, And the detection lever 338 moves the failure detection rod 337.

In this embodiment, the failure detection system 341 is provided so as to be able to contact the failure detection rod 337 at the other end of the link body 335 and to be able to contact the failure detection rod 337, The outer diameter defect is displayed. More specifically, the end of the failure detecting rod 337, which is simultaneously moved by the movement of the failure detecting lever 338, pushes the return instruction of the failure detecting system 341 by a predetermined amount or more. At this time, The pushed degree of the instruction is displayed. The operator confirms this with the naked eye and judges that the forged product 10 has a bad outer diameter when it exceeds the setting range. Although the failure detection system 341 is shown as an analog type in the related drawings, the failure detection system 341 is not necessarily limited to this, and the failure detection system 341 may be applied to a digital type in which the pushed displacement is represented by a numeral. On the other hand, a spring or the like is provided as a resilient means on the gum guidance part of the failure detection system 341 so that the failure detection rod 337 can be pushed to an initial position to be repeatedly checked.

5, the jig according to the present embodiment includes an edge defect check unit 350 for checking the defect of the upper edge portion of the forged product 10. The corner defect check unit 350 includes a corner defect check unit 350, The outer diameter defect check section 330 has substantially the same configuration, and the same reference numerals are used for the same configurations.

The corner defect check section 350 is substantially the same as the outer diameter defect check section 330 except that the link body 335 is disposed only in an inclined state with respect to the fixed bar 333, Duplicate description will be omitted.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

10: Forgings 100: Fixed bed
200: forged product rotating unit 300: bad check unit
310: inner diameter defect check section 317:
318: failure detection lever 319: contact projection
321: Defect detection system 322: Fixing bolt
330: outer diameter defect check section 350: corner defect check section

Claims (9)

Fixed bed;
A forged product rotating unit provided on the fixed bed and capable of rotating the forged product in a fixed state; And
And a failure check unit provided in the fixed bed to check the appearance size defects of the forgings in a state in which the forgings are rotated by the forgings rotating unit. The method according to claim 1,
The forged product rotating unit includes:
A fixing chuck capable of fixing and releasing the forgings; And
And a rotating shaft portion for rotating the fixed chuck portion on the fixed bed,
Wherein the rotary shaft portion is rotatable freely with respect to the fixed bed. 3. The method of claim 2,
And a drive motor connected to the rotary shaft portion and rotating the rotary shaft portion. The method according to claim 1,
The bad check unit includes:
An inner diameter failure check unit movably provided on the fixed bed to check the inner diameter defects of the forgings; And
And a defective outer diameter check unit movably provided on the fixed bed to check the defective outer diameter of the forged product. 5. The method of claim 4,
The bad check unit includes:
And a corner failure check unit movably provided on the fixed bed for checking a failure of an upper edge portion of the forged product. 5. The method of claim 4,
The inner diameter defect check unit
A plurality of guide rods provided on the fixed bed;
A moving block movably provided along the guide rod;
A fixed bar fixed to the moving block;
A link body connected to the fixed bar and having a hollow inside and having a lever support at one end;
A failure sensing rod disposed inside the link body so as to be movable along a longitudinal direction of the link body;
A failure detecting lever which is hingably rotatably provided on the lever support and protrudes on an end thereof so as to be contactable with an inner circumferential surface of the forged product and which pushes the failure detecting rod when an inner circumferential surface of the forged product is defective; And
And a failure detection system for detecting a defect in the inner diameter of the forgings according to a degree of contact between the failure detection rods and the failure detection rods, the jig being capable of contacting the failure detection rods at the other end of the link body. The method according to claim 6,
Further comprising a bush connected to the fixed bar, the bush being movable along the longitudinal direction of the fixed bar. 5. The method of claim 4,
The outer diameter defect check unit
A plurality of guide rods provided on the fixed bed;
A moving block movably provided along the guide rod;
A fixed bar fixed to the moving block;
A link body connected to the fixed bar and having a hollow inside thereof;
A failure sensing rod disposed inside the link body so as to be movable along a longitudinal direction of the link body;
A failure detecting lever connected to an end of the failure detecting rod so as to be movable at the same time as the failure detecting rod and moving the failure detecting rod when the outer circumferential surface of the forging product is defective; And
And a failure detection system which is provided at the other end of the link body so as to be able to be in contact with the failure detection rod and which displays an outer diameter defect of the forging product according to the degree of contact between the failure detection rod and the failure detection rod. 9. The method according to claim 6 or 8,
And a plurality of fixing bolts for fixing the moving block to restrict movement of the moving block with respect to the guide bar.
KR1020140042762A 2014-04-10 2014-04-10 Jig for checking defect of forged parts of rotational state KR20150117726A (en)

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Application Number Priority Date Filing Date Title
KR1020140042762A KR20150117726A (en) 2014-04-10 2014-04-10 Jig for checking defect of forged parts of rotational state

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Publication Number Publication Date
KR20150117726A true KR20150117726A (en) 2015-10-21

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