KR102250349B1 - Notch marking device for impact testing of weldments - Google Patents

Abstract

The present invention relates to a notch marking device for impact testing of a welding part and, more specifically, comprises: a marking unit installed with a moving frame that moves up, down, left, and right, a fixing bar installed on one side of the moving frame, and a marking tip on the end of the fixing bar; and a fixing unit installed with a base part, a fixing part installed vertically standing on one side of the base part wherein a clamp for fixing a graduated ruler is installed on an upper part, an LM guide part installed on an upper part of the base part, and a mounting part installed on an upper part of the LM guide part and having a guide formed on both sides to mount a test piece, wherein after the test piece is mounted on the mounting part, the marking tip is characterized in that the notch marks the upper part of the test piece. Therefore, the present invention has an effect of increasing a reliability for impact testing the welding part.

Description

Notch marking device for impact testing of welds {NOTCH MARKING DEVICE FOR IMPACT TESTING OF WELDMENTS}

The present invention relates to a notch marking device for impact testing of a weld, and more particularly, notch marking at each position based on a fusion line (FL) by using a notch marking device on a test piece for an impact test of a weld. Therefore, it relates to a notch marking device for the impact test of the welded part that can increase the reliability of the impact test.

In general, the impact characteristics of steel materials are related to the heat impact, so the location of the notches is a very important criterion when selecting structural steels because impact tests should be performed for each weakened part due to heat to collect data, and since it is closely related to the stability of the structure. Selection is very important.

In general, the impact characteristics of steel materials are evaluated in three or five tests using a Charph impact test piece having a notch of 2 mm in height (h) in accordance with the KS standard.

Therefore, since the height (h) and angle (α) of the notch of the impact test piece are closely related to the impact characteristics, it is necessary to precisely process the notch. There was no way to do it.

As an example, a jig such as a vernier caliper was used to check the machining dimension of the notch in the impact test piece, and the operator visually checked the scale of the jig to check the degree of processing of the notch.

However, the conventional method of confirming the processing degree of the notch of the impact test piece, in which the operator visually checks the scale of the jig, cannot perform a precise inspection, and since it is only dependent on the operator's feeling or skill level, a uniform inspection cannot be performed. I did.

Accordingly, there is a great concern that the impact test is performed with the notch of the impact test piece being poorly processed, the reliability of the value as a result of the impact test is lowered, and economic problems due to the reprocessing of the test piece have occurred.

Republic of Korea Patent Publication No. 10-1289418

The present invention was conceived in consideration of the above problems, and an object of the present invention is a notch marking device for impact testing of welds to increase reliability for impact testing of welds by precisely selecting a notch on the upper part of a test piece through a fixing unit It is to provide.

Another object of the present invention is to automatically return the moving rail by the elastic force of the elastic spring installed in the lower part of the LM guide, and the notch for the impact test of the welding part for precise positioning due to the installation of a micrometer. It is to provide a marking device.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention pertains from the following description. .

According to a feature for achieving the object as described above, the moving frame moving vertically, left and right, the fixing bar installed on one side of the moving frame, and a marking unit in which a marking tip is installed at an end of the fixed bar;

A base portion, a fixing portion installed vertically standing on one side of the base portion and a clamp for fixing a ruler thereon, an LM guide portion installed above the base portion, and an upper portion of the LM guide portion A fixing unit in which a seating portion on which the test piece is mounted is installed;

Including,

After the test piece is seated on the seating portion, the marking tip notch marks the upper surface of the test piece.

In addition, the LM guide portion,

Including a guide rail and a moving rail installed above the guide rail,

A first fixing part and a second fixing part installed on the upper part of the moving rail are installed under the guide rail, and an elastic spring is installed between the first fixing part and the second fixing part. It is characterized in that it is returned to the original position by the elastic force of.

In addition, a contact stand installed on one side of the upper part of the moving rail,

A fixing bracket installed on one side of the moving rail,

A micrometer installed on one side of the fixing bracket,

The micrometer is provided with a rod on one side and installed at a position corresponding to the contact table,

The rod is rotated toward the contact table to advance the moving rail in the longitudinal direction.

In addition, a through hole with a thread formed in a vertical direction is formed at the end of the fixing bar,

A screw thread is formed on an upper outer circumferential surface of the marking tip, and the marking tip is screwed to each other in the through hole.

In addition, a guide for supporting one side of the test piece is installed on one or both sides of the upper portion of the seating portion.

According to the notch marking device for the impact test of the welding part according to the present invention, it is effective to increase the reliability of the impact test of the welding part by precisely selecting the notch on the upper part of the test piece through the fixing unit.

In addition, it is possible to automatically return the moving rail by the elastic force of the elastic spring installed in the lower part of the LM guide, and there is an effect of achieving precise positioning due to the installation of a micrometer.

1 is a perspective view showing a notch marking device for an impact test of a welding part according to an embodiment of the present invention,
2 is a plan view showing a notch marking device for an impact test of a welding part according to an embodiment of the present invention;
3 is a partial perspective view of a notch marking device for an impact test of a welding part according to an embodiment of the present invention,
4 is another partial perspective view of a notch marking device for an impact test of a welding part according to an embodiment of the present invention,
5 is a view showing a marking unit of a notch marking device for an impact test of a welding part according to an embodiment of the present invention;
6 is a view showing a fixing unit and a marking unit in a notch marking device for impact testing of a welding part according to an embodiment of the present invention.

The following objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

The embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprise" and/or "comprising" does not exclude the presence or addition of one or more other components.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, a number of specific contents have been prepared to explain the invention in more detail and to aid understanding. However, readers who have knowledge in this field enough to understand the present invention can recognize that it can be used without these various specific contents. In some cases, it should be mentioned in advance that parts that are commonly known in describing the invention and are not significantly related to the invention are not described in order to avoid confusion in describing the invention.

1 is a perspective view showing a notch marking device for an impact test of a welding part according to an embodiment of the present invention, and FIG. 2 is a plan view showing a notch marking device for an impact test of a welding part according to an embodiment of the present invention 3 is a partial perspective view of a notch marking device for an impact test of a welding part according to an embodiment of the present invention, and FIG. 4 is another view of a notch marking device for an impact test of a welding part according to an embodiment of the present invention. Fig. 5 is a partial perspective view, and Fig. 5 is a view showing a marking unit of a notch marking device for an impact test of a welding part according to an embodiment of the present invention, and Fig. 6 is a view showing a marking unit for an impact test of a welding part according to an embodiment of the present invention. It is a diagram showing the fixing unit and the marking unit in the notch marking device.

The present invention relates to a notch marking device for impact testing of a weld, and more particularly, notch marking at each position based on a fusion line (FL) by using a notch marking device on a test piece for an impact test of a weld. Thus, it relates to a notch marking device for impact testing of welded parts that can increase the reliability of impact testing.

As shown in Figures 1 to 6, the notch marking device for the impact test of the welded portion of the present invention is largely composed of a marking unit 100 and a fixing unit 200.

The marking unit 100 has an operation unit 140 installed under it.

A direction control unit 141 is installed on one side of the control unit 140 to operate in the up/down/left/right direction in connection with a control unit (not shown), so that the operation in the up/down/left/right direction of the moving frame 110 is possible by a button.

At this time, the inside of the movable frame 110 is coupled with a gear and is interlocked with a support guide 150 to be described below, and can be moved vertically through the support guide 150, and is interlocked with the fixed bar 120 to the left and right. You can go to.

Since the gear coupling structure of the moving frame 110 is a known gear structure such as a general linear gear or a worm gear for moving in the longitudinal direction, a description thereof will be omitted.

In addition, a speed control unit 142 is installed on one side of the control unit 140 to adjust the speed of the moving frame 110 to be described in the up/down/left/right directions in conjunction with a control unit (not shown). You can adjust the speed in the up/down/left/right directions.

The speed control unit 142 adjusts the speed of the moving frame 110 in the up/down/left/right direction so that when the marking unit 100 marks the test piece T of the fixing unit 200, an appropriate marking speed is obtained. There is an effect of increasing the marking accuracy by adjusting.

In this case, an emergency stop button 143 is installed on one side of the manipulation unit 140 to stop the operation of the device in case of an emergency situation by interlocking with a control unit (not shown).

When an emergency situation occurs, the emergency stop button 143 allows the operator to quickly press the emergency stop button 143, and the control unit (not shown) controls the operation unit 140 to stop the device to prevent unforeseen accidents. I can.

In addition, on one side of the manipulation unit 140, a first display unit 144 for displaying a horizontal movement scale according to the movement of the moving frame 110, and a second display unit 145 for displaying a vertical movement scale. ) Is installed so that the operator can easily check the movement of the moving frame 110 on the display, so that the marking interval can be precisely controlled.

In this way, the support guide 150 is installed in the vertical direction above the operation unit 140, and the moving frame 110 is installed by being inserted into the support guide 150.

At this time, a fixing bar 120 is installed on one side of the moving frame 110 and a marking tip 130 is installed at an end of the fixing bar 120.

A through hole 121 is formed at one end of the fixing bar 120 in a vertical direction, and a thread is formed around an inner circumference of the through hole 121.

In addition, a screw thread is formed on an upper outer circumferential surface of the marking tip 130, and the marking tip 130 is inserted into the through hole 121 to be screwed together to be firmly fixed. In case of replacement due to wear or damage, it can be easily replaced and maintained.

Since the material of the marking tip 130 is made of a cemented carbide (tungsten) material, it is preferable to use it for a long time by reducing abrasion and damage of the marking tip 130 during notch marking.

In addition, the fixing unit 200 includes a base part 210 fixed to the ground or an upper part of the test table, a fixing part 220 installed vertically standing on one side of the base part 210, and the fixing part 220 ) A clamp 221 for fixing the ruler 250 on the top is bolted and installed.

Here, spacers (not shown) are installed under both sides of the clamp 221 to provide a space for accommodating the ruler 250, and the clearance and tightening strength with the ruler 250 can be adjusted by bolting.

In addition, the ruler 250 can draw a line using the dimensions of the test piece T and a cemented carbide pen (not shown), and can be replaced to measure lengths such as mm, cm, m, etc., depending on the purpose. .

These rulers 250 have an average of 2 to 4 test pieces (T) mounted on the mounting part 240 to be described below, so that each position of 2 mm, 5 mm, and 20 mm based on the fusion line (FL). A line may be drawn and marked, and the ruler 250 may be made of either steel or plastic, but the ruler 250 of the present invention is preferably made of steel.

In addition, an LM guide part 230 is installed on the base part 210.

The LM guide part 230 includes a guide rail 231 installed under the base part 210 and a moving rail 232 installed above the guide rail 231, and the guide rail The 231 and the moving rail 232 are guided to each other in the left and right directions to move.

Since the basic configuration of the LM guide unit 230 is a known technology, a detailed description will be omitted below.

In addition, a first fixing part 233 is installed under the guide rail 231, and a second fixing part 234 is installed above the moving rail 232, and the first fixing part 233 and the first fixing part 233 are provided. Two elastic springs 235 are installed between the fixing portions 234, respectively.

More preferably, a space for seating the elastic spring 235 is formed on one side of the upper portion of the guide rail 231, and the elastic spring 235 is preferably inserted into the space.

As the elastic spring 235 is installed, when the moving rail 232 installed on the guide rail 231 moves forward, an expansion force is generated in the elastic spring 235, and the moving rail 232 returns. In this case, the moving rail 232 may return to its original position by the contraction force of the elastic spring 235.

In addition, a contact table 236 is installed on one side of the upper portion of the moving rail 232, installed on one side of the moving rail 232, and a fixing bracket having a receiving groove for accommodating the micrometer 270 to be described below ( 271), and a micrometer 270 is inserted into the receiving groove formed in the fixing bracket 271 and installed.

At this time, the micrometer 270 has a rod 272 formed on one side and is installed at a position corresponding to the contact table 236, and the rod 272 is rotated after contacting the contact table 236. The moving rail 232 is advanced in the longitudinal direction.

In addition, a seating portion 240 on which the test piece T is seated is installed on the LM guide portion 230.

At the same time as the seating portion 240 seats the test piece T, a guide 260 is installed on one side of the upper portion of the seating portion 240 to support one side of the test piece T.

In addition, the guide 260 may be installed on one or both sides of the upper portion of the seating portion 240, while supporting one side of the test piece (T) and at the same time preventing the drop of the test piece (T) and Precise marking can be performed by preventing flow.

Hereinafter, the operation sequence will be described in detail with respect to the notch marking device for the impact test of the welding portion according to the present invention.

First, the marking unit 100 and the fixing unit 200 according to the present invention are mounted on the ground or on the top of the test table, moved to a position close to each other, and then fixed.

Thereafter, the precision-processed test piece (T) to be used for the test is seated on the seating portion 240 and at the same time, one side of the test piece (T) is closely supported toward the guide 260 installed on one side of the upper portion of the seating portion (240). Position it.

At this time, it is preferable to manufacture the test piece (T) to be the same as the height of the guide 260. If the test piece (T) is higher or lower than the height of the guide 260, the level of the ruler 250 is not correct. Therefore, it is difficult to make precise marking during notch marking, so the height of the test piece (T) and the guide (260) should be the same.

Next, the ruler 250 is inserted into the clamp 221 installed on the fixing part 220 and then bolted to fix it. When tightening with an excessive force during bolting, overstress occurs in the tightened part, and the ruler ( There is a problem that the other end of 250) rises or the ruler 250 is distorted, and if the ruler 250 is tightened with a small force, the ruler 250 flows, making precise marking difficult during notch marking, so the bolting of the clamp 221 It is preferable to bolt at a predetermined pressure with a silver torque wrench or the like.

Here, spacers (not shown) are installed under both sides of the clamp 221 to provide a space for accommodating the ruler 250, and the clearance and tightening strength with the ruler 250 can be adjusted by bolting.

Thereafter, when the micrometer 270 installed on one side of the LM guide part 230 is rotated forward, the rod 272 advances in the longitudinal direction, and the moving rail 232 after contacting to the contact table 236 Is advanced in the longitudinal direction.

As the moving rail 232 advances in the longitudinal direction, the elastic spring 235 expands and is in a state waiting for a return action to its original position by the elastic force.

As the moving rail 232 gradually advances in the longitudinal direction, it moves to each position of 2 mm, 5 mm, and 20 mm based on the fusion line (FL). Check the value of the micrometer 270. And move.

In addition, using a cemented carbide pen (not shown) at each location on the upper surface of the test piece (T), place the ruler 250 at each location of 2 mm, 5 mm, and 20 mm based on the fusion line (FL). It is marked primarily by drawing a line as a standard.

Thereafter, when the direction control unit 141 on one side of the operation unit 140 of the marking unit 100 is operated in the up/down/left/right direction, the moving frame 110 is operated in the up/down/left/right direction so that the fixed bar 120 is The test piece (T) is brought close to the first marked area. At this time, the moving speed can be adjusted using the speed control unit 142, and the first and second display units 144 and 145 are checked. After confirming the position of the marking tip 130, the marking tip 130 performs notch marking on the upper surface of the test piece T secondly.

Finally, when the micrometer 270 is rotated in the reverse direction after the marking is finished, the rod 272 in contact with the contact table 236 moves backward and the moving rail 232 moves backward in the longitudinal direction. 235) is contracted and returned to its original position by the elastic force, and after removing the marked test piece (T), the next test piece (T) is repeatedly performed in accordance with the operating sequence of the present invention.

Therefore, in the present invention, the reliability of the impact test of the welded part can be increased by precisely selecting the notch on the upper part of the test piece through the fixing unit, and the return of the moving rail can be automatically performed by the elastic force of the elastic spring installed in the lower part of the LM guide. , There is an effect of promoting precise positioning due to the installation of a micrometer.

Since the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, various equivalents that can replace them at the time of the present application It should be understood that there may be variations and variations.

100: marking unit 110: moving frame
120: fixed bar 121: through hole
130: marking tip 140: control panel
141: direction control unit 142: speed control unit
143: emergency stop button 144: first display
145: second display unit 150: support guide
200: fixing unit 210: base
220: fixing part 221: clamp
230: LM guide part 231: guide rail
232: mobile rail 233: the first fixed government
234: second fixing portion 235: elastic spring
240: seat 250: ruler
260: guide 270: micrometer
271: fixing bracket 272: rod
T: test piece

Claims (5)

A moving frame 110 that is moved up and down, left and right, a fixed bar 120 installed at one side of the moving frame 110, and a marking unit 100 having a marking tip 130 installed at an end of the fixed bar 120;
A base part 210, a fixing part 220 that is installed standing upright on one side of the base part 210 and having a clamp 221 for fixing the ruler 250 thereon, and the base part ( 210) a fixing unit 200 in which an LM guide part 230 installed on the upper part and a seating part 240 installed on the LM guide part 230 and on which the test piece T is seated are installed;
Including,
After the test piece (T) is seated on the seating portion (240), the marking tip (130) notch marks the upper surface of the test piece (T),
The LM guide unit 230,
Including a guide rail 231 and a moving rail 232 installed above the guide rail 231,
A first fixing part 233 installed below the guide rail 231 and a second fixing part 234 installed above the moving rail 232 are installed, and the first fixing part 233 and the first fixing part 233 are installed. 2 An elastic spring 235 is installed between the fixing portions 234 and returned to the original position by the elastic force of the elastic spring 235 after the moving rail 232 advances,
A contact table 236 installed on one side of the upper part of the moving rail 232,
A fixing bracket 271 installed on one side of the moving rail 232,
A micrometer 270 installed on one side of the fixing bracket 271,
The micrometer 270 has a rod 272 formed on one side and is installed at a position corresponding to the contact table 236,
The rod 272 is rotated toward the contact table 236 to advance the moving rail 232 in a longitudinal direction.
delete delete The method according to claim 1,
A through hole 121 having a screw thread formed in a vertical direction is formed at the end of the fixing bar 120,
A notch marking device for an impact test of a welding portion, characterized in that a thread is formed on an upper outer circumferential surface of the marking tip 130 so that the marking tip 130 is screwed to each other in the through hole 121.
The method according to claim 1,
A notch marking device for an impact test of a welded portion, characterized in that a guide 260 for supporting one side of the test piece (T) is installed on one or both sides of the upper portion of the seating portion 240.

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