KR200294144Y1 - Jig for test bar - Google Patents

Abstract

Even for beginners, there is disclosed a test fixture fixing jig that can easily display the gage distance, is convenient for measuring an extended length or a cross section length, and can be used regardless of the shape or length of the specimen. The fixture fixing jig according to the present invention is composed of a base portion, a first clamp portion and a second clamp portion. The base part has a horizontal plate-shaped base plate, a fixed block having a first V-shaped first settling groove formed on the upper surface of one side of the base plate and fixed at one end of the specimen, and the other side of the base plate. It is arranged to be movable to the fixed block side on the upper surface and has a moving block formed with a second settling groove so that the other end of the specimen is placed in the center portion. The first clamp portion and the second clamp portion have the same shape. The first clamp portion and the second clamp portion include a pivoting stand and a lock. The pivoting stand includes a first vertical rod pivotally mounted on one side of the fixed block and the movable block, and a fixed plate extending from the first vertical rod and vertically extending with respect to the first vertical rod. And a tightening bolt extending to the 1 settling groove and the second settling groove to fix the specimen. The lock is mounted on the other side of the fixed block and the moving block, and the predetermined position is coupled to the upper portion of the second vertical rod, the second vertical rod formed with a seating ring for seating the lower surface of the other end of the fixed plate, the clamp nut for clamping the fixed plate Include.

Description

Jig for test bar

The present invention relates to a fixed jig for a specimen, and more particularly, a pivot body mounted with a scale, a base having a fixed block and a moving block respectively disposed on an upper surface of the main body, and pivoting mounted on one side of the fixed block. The first clamp part is fixedly mounted on the other side of the fixed block and fixed to the pivoting stand and the second clamp part which is the same shape as the first clamp part and is mounted on the movable block, so that even a beginner can easily set the mark distance. The present invention relates to a stationary jig for specimens that can be marked and used to measure elongated or cross-sectional lengths, and which can be used regardless of the shape or length of the specimen.

In general, various materials such as plastic, rubber, reinforcing steel, steel, and various nonferrous metals can obtain mechanical properties by obtaining strength, hardness, elongation, and cross-sectional shrinkage. The most commonly used test is the tensile test. Tensile test is a test to measure the tensile strength, yield point, strength, elongation, section shrinkage and elastic limit by examining the relationship between extension strain and load to fracture by putting the specimen on the tester and gradually applying load in the axial direction. In this case, the elongation (ε) measurement indicates the difference between the ground distance (L) after breaking of the specimen and the standard distance before the test (LO) as a percentage of the ground distance (LO).

The elongation measured in this way has a great influence on the degree of elongation, depending on the accuracy of measuring the gage lengths by marking the gages on the specimens or connecting the broken specimens after the tensile test. In addition, in order to accurately display the gage distance, a gage was drawn on the specimen and a gage distance was displayed using a general-purpose measuring instrument such as a vernier caliper.

However, the above method requires the skill of the operator to measure the exact length when measuring the gage distance, and in particular, there is an inconvenience in that there is no fixing device or jig when measuring the gage by attaching a broken specimen.

The present invention is devised to solve the conventional problems as described above, the object of the present invention is the base portion having a fixed block and a moving block is disposed on the upper surface of the main body, the scale is attached and one side of the fixed block A first clamp part having a pivoting stand pivotally mounted to the pivot block, a first clamp part fixedly mounted on the other side of the fixed block and having a locking band engaged with the pivoting stand, and a second clamp part having the same shape as the first clamp part and mounted to the movable block In addition, even a beginner can easily mark the gage distance, and it is convenient to measure the length of the stretched section or the cross section, and to provide a fixture fixing jig that can be used regardless of the shape or length of the specimen.

1 is an exploded perspective view showing a fixing jig for a specimen according to the present invention,

Figure 2 is a combined perspective view showing a fixing jig for a specimen according to the present invention,

3A and 3B are cross-sectional views of main parts of the main body and the clamp in FIG. 2, and

4a and 4b is a view showing a state of use of the test fixture fixing jig according to the present invention.

Explanation of symbols on the main parts of the drawing

100: specimen fixing jig 110: base

112: main body 114: guide groove

116 guide rail 118 scale

120: fixed block 122: first settling groove

124: first rotating groove 130: moving block

132: second settling groove 134: second rotating groove

140: guide 142: guide rod

150a: first clamp portion 150b: second clamp portion

152a, 152b: Swivel holder 154a, 154b: 1st vertical bar

156a, 156b: Fixing plate 162a, 162b: Tightening bolt

164a, 164b: ball flanger 170a, 170b: locking stand

172a, 170b: second vertical bar 178a, 178b: seating ring

180a, 180b: Clamp nut 188a, 188b: Spring

190a, 190b: auxiliary nut

In order to achieve the object of the present invention as described above, the present invention,

A base plate having a first guide hole extending from one adjacent position to another adjacent position, and fixedly disposed on an upper surface of one side of the base plate, and penetrating to one side and the other side of the base plate at a central portion thereof so that one end of the specimen is settled. &Quot; A second settle corresponding to the first settling groove so that the fixed block having a first shaped settled groove and a movable block can be moved on the fixed block side on the other upper surface of the base plate and the other end of the specimen can be settled at the center portion. A base part having a moving block having a groove formed therein;

The first vertical rod having the same shape and rotatably mounted on one side of the fixed block and the moving block, one end is mounted on the upper portion of the first vertical rod and extends perpendicularly to the first vertical rod, A pivot lock having a tightening bolt extending to the first settling groove and the second settling groove to fix the specimen; and a seating ring mounted on the other side of the fixed block and the movable block and seated at the other end of the lower plate of the fixed plate. It is to provide a test piece fixing jig comprising a first clamp portion and a second clamp portion formed of a locking bar having a second clamping nut is coupled to the upper portion of the formed, the second vertical rods to clamp the fixing plate.

As described above, according to the present invention, the main body is attached to the scale, the base having a fixed block and a moving block, respectively disposed on the upper surface of the main body and the pivoting fixedly mounted on one side of the fixed block, fixed block The first clamp part is fixedly mounted on the other side of the first clamp part and the second clamp part which is the same shape as the first clamp part and is mounted on the movable block, and can be displayed easily even by a beginner. Not only is it convenient for measuring elongated or cross-sectional lengths, it can be used regardless of the shape or length of the specimen.

Hereinafter, with reference to the accompanying drawings will be described for the test fixture fixing jig according to an embodiment of the present invention.

1 is an exploded perspective view showing a fixing jig for a tensile test specimen according to the present invention, Figure 2 is a combined perspective view showing a fixing jig for a tensile test specimen according to the present invention, and Figures 3a and 3b is a body and a clamp in Figure 2 The main part of this figure has been shown in cross section.

1 and 2, the specimen fixing jig 100 according to the present invention includes a base part 110, a first clamp part 150a, and a second clamp part 150b.

First, the base unit 110 is provided with a base plate 112, a fixed block 120 and a moving block 130. The base plate 110 has a horizontal plate shape having a first guide hole 114 extending from one side adjacent position to the other adjacent position. At this time, the lower portion of the first guide hole 114 is formed with a guide groove 116 radially wide along the first guide hole 114 (see Fig. 3a). The vertical plate-shaped scale 118, which is engraved on the upper surface, is mounted on either the front or the rear surface of the base plate 112 thus formed. Preferably, the scale 118 is formed with a second guide hole 119 extending from one adjacent position to the other adjacent position. The fixed block 120 and the moving block 130 are disposed on the base plate 110, respectively.

The fixing block 120 is fixedly disposed on one side upper surface of the base plate 112 by a screw penetrating from the bottom of the base plate 112. In the central portion of the fixing block 120, a first settling groove 122 having a “V” shape is formed to penetrate to one side and the other side of the base plate 112, and a first settling groove 122 is formed at one side thereof. The first rotating groove 124 is formed extending from the outside of the fixed block 122 to the inside, the other side of the first settle groove 122, the first coupling hole extending vertically from the top of the fixed block 120 to the lower side ( 126 is formed. At this time, the first female screw 128 is formed on the inner circumferential surface of the first coupling hole 126.

Meanwhile, the moving block 130 passes through the guide bolt 140 extending from the lower portion of the base plate 112 and penetrating through the first guide hole 114 and the second guide hole 119 formed on the scale 118. It is disposed on the other upper surface of the base plate 112 by the fixing bolt 139 extending. At this time, the head portion of the guide bolt 140 is inserted into the guide groove 116 to be movable. In the center portion of the moving block 130, a second settling groove 132 having a "V" shape corresponding to the first settling groove 122 is formed, one side of the second settling groove 132, the first rotation A second rotary groove 134 identical to the groove 124 extends from the outside of the moving block 130 to the inside, and a second coupling that is the same as the first coupling hole 126 on the other side of the second settling groove 134. The ball 136 extends vertically from the top to the bottom of the moving block 130. At this time, the second female screw 138 is formed on the inner circumferential surface of the second coupling hole 136. In this, the first rotary groove 124 and the second rotary groove 134 of the moving block 130 across the first rotary groove 124 and the second rotary groove 134 from one side of the fixed block 120. The guide rod 142 extending to the other side is mounted. Preferably, the stop plate 144 is screwed on one side of the fixing block 120 to close one side of the first settle groove 122. More preferably, the first settle groove 122 and the second settle groove 132 may have a step shape that is narrowly extended while having a “V” shape from an upper side to a lower side. The fixed block 120 and the moving block 130 of the base portion 110 formed as described above are provided with the same first clamp portion 150a and the second clamp portion 150b.

The first clamping part 150a and the second clamping part 150b may include pivoting brackets 152a and 152b for fixing the specimen M (see FIG. 4A) placed in the fixing block 120 and the moving block 130. Locking brackets 170a and 170b for engaging the pivotal fixing tables 152a and 152b are respectively provided. First, the pivoting stops 152a and 152b are pivotable to the guide rods 142 penetrating the first and second rotation grooves 124 and 134 of the fixed block 120 and the moving block 130, respectively. Fixed plates 156a and 156b, one end of which is mounted perpendicularly to the first vertical rods 154a and 154b at the upper ends of the first vertical rods 154a and 154b and the first vertical rods 154a and 154b. And tightening bolts 162a and 162b extending through the fixing plates 156a and 156b to the first and second settling grooves 122 and 124, respectively. At this time, the fastening holes 158a and 158b through which the fastening bolts 162a and 162b pass through are formed at the center of the fixing plates 156a and 156b, respectively. The other ends of the fixing plates 156a and 156b are fixed plates 156a and 156b, respectively. Incision grooves 160a and 160b extending inwardly of 156b are formed, respectively. On the other hand, the head of the tightening bolts (162a, 162b) is knurling the outer peripheral surface so that the user can smoothly rotate the tightening bolts (162a, 162b). More preferably, the lower portion of the tightening bolts (162a, 162b) is mounted with ball flangers (164a, 164b) that can smoothly fix the specimen (M), respectively.

Meanwhile, the lock bars 170a and 170b are second vertical rods 172a and 172b respectively mounted to the first coupling hole 126 and the second coupling hole 136 of the fixed block 120 and the movable block 130. And clamp nuts 180a and 180b mounted on upper portions of the second vertical bars 172a and 172b to control the fixing plates 156a and 156b, respectively. Shapes corresponding to the first female screw 128 and the second female screw 138 to be mounted to the first coupling hole 126 and the second coupling hole 136 in the lower portion of the second vertical rods 172a and 172b. The first male thread 174a and the second male thread 174b having the same shape are formed, and similarly, the third male thread 176a and 176b are formed on the upper circumferential surfaces of the second vertical rods 172a and 172b. At this time, the predetermined mounting position of the second vertical rods 172a and 172b protrudes radially outwardly of the second vertical rods 172 and 172 so that the lower mounting rings 178a and 178b are seated. 178b are formed, respectively, and the diameters of the second vertical rods 172a and 172b extending from the tops of the seating rings 178a and 178b may enter and exit the cutting grooves 160a and 160b of the fixing plates 156a and 156b. It has a diameter smaller than the width of the incision grooves (160a, 160b).

On the other hand, the clamp nut (180a, 180b) is formed through the through holes (182a, 182b) so as to move up and down on the top of the second vertical rods (172a, 172b), respectively. At this time, the clamp nuts (180a, 180b) is formed on each of the spring mounting grooves 184a, 184b having a diameter larger than the diameter of the through holes (182a, 182b) from the upper surface to the lower adjacent position of the through holes (182a, 182b). 3B, springs 188a and 188b surrounding the second vertical rods 172a and 172b extending through the through holes 182a and 182b are disposed in the spring seating grooves 184a and 184b, respectively. At the upper portions of the springs 188a and 188b, auxiliary nuts 190a and 190b fastened to the third male threads 176a and 176b are mounted, respectively, being limited to the spring seating grooves 184a and 184b. Preferably, mounting protrusions 186a and 186b are formed on the outer circumferential surfaces of the clamp nuts 180a and 180b so as to protrude radially corresponding to each other so as to smoothly rotate the clamp nuts 180a and 180b.

Hereinafter, the state of use of the test fixture fixing jig 100 formed as described above will be briefly described.

4a and 4b is a view showing a state of use of the test fixture fixing jig according to the present invention.

First, the user must release the clamps 150a and 150b before placing the specimen M on the fixture fixing jig 100. Referring to FIG. 4A, in order to release the lock, the clamp nuts 180a and 180b of the clamp nuts 180a and 180b mounted on the other sides of the fixing plates 156a and 156b are rotated by 90 ° so that the clamp nuts 180a and 180b are cut in the grooves 160a and 160b. To enter. When the clamp nuts 180a and 180b enter the cutting grooves 160a and 160b of the fixing plates 156a and 156b, the guide rods 152a and 152b pass through the lower portions of the first fixing rods 154a and 154b. 142 back to the center to allow the settling grooves 122 and 132 formed in the center of the fixed block 120 and the moving block 130 to be opened. When the settling grooves 122 and 132 are opened in this manner, the test piece M is placed. At this time, while putting one end of the specimen (M) in close contact with the stop plate 144 mounted on the other end of the fixed block 120, put it in the first settle groove 122 and the other end of the specimen (M) of the moving block 130 According to the other end is placed on the second settle groove (132). At this time, the moving block 130 is moved along the guide bolt 140 and the guide rod 142 according to the size of the specimen (M) (see Fig. 4b). Preferably, the moving block 130 by tightening the fixing bolt 13 () fastened to the moving block 130 through the second guide hole 119 so as not to move the moving block 130 any more. ) Is fixed to the scale 118. Thus, if one end and the other end of the specimen (M) coincides with the other end of the fixed block 120 and the other end of the moving block 130, the specimen ( The length of M) is conveniently measured Next, the pivoting stand 152a, 152a, 172b is placed in the center of the incision grooves 160a, 160b formed on the other side of the fixing plates 156a, 156b. 152b is pivoted about the guide rod 142. In order to fix the pivoting turntables 152a and 152b, the upper and lower mounting projections 186a and 186b formed on the outer circumferential surfaces of the clamp nuts 180a and 180b are held by hand. At this time, the clamp nuts (180a, 180b) is the cutting groove (160a, 156b) of the fixing plates (156a, 156b) Pull out the raised clamp nuts 180a and 180b and rotate them by 90 ° to raise the lower surface of the clamp nuts 180a and 180b onto the upper surfaces of the fixing plates 156a and 156b. Preferably, when the clamp nuts 180a and 180b are raised to the upper surfaces of the fixing plates 156a and 156b, the springs 188a and 188b disposed inside the clamp nuts 180a and 180b are lowered. It is limited by the spring seating portions 186 and 186b and the upper auxiliary nuts 190a and 190b to prevent the pivoting stops 152a and 152b from moving. When 152a and 152b are locked, the captive bolts 162a and 162b are held by the hand and rotated to move downward.Continuously rotating the tightening bolts 162a and 162b to the lower ends of the tightening bolts 162a and 162b. The mounted ball flangers 164a and 164b are pressed to one side and the other side of the specimen M. Secure the specimen (M) to prevent movement.

As described above, the specimen fixing jig 100 according to the present invention is mounted on the back surface of the horizontal plate-shaped base plate 112, the base plate 112, the first guide hole 114 is formed in the center and the upper surface A vertical plate-shaped scale 118 engraved on the upper surface of the base plate 112, the first settle groove 122 of the "V" shape so that the specimen (M) can be placed in the center and The base portion 110 having the fixed block 120 and the movable block 130 having the second settled groove 132 and the specimen (M) mounted on the fixed block 120 and the movable block 130 to pressurize Tightening bolts (164a, 164b) is mounted so as to bind to the pivoting fasteners (152a, 152b) and the pivoting fasteners (152a, 152b) that can be pivotally mounted on one side of the fixed block (120) and the movable block (130). Clamp nuts 180a, 180b are mounted to the first block having a locking block (170a, 170b) fixedly mounted on the other side of the fixed block 120 and the moving block 130 Composed of the lamp unit 150a and the second clamp unit 150b, not only can the mark be easily and accurately displayed, but also it can improve the measurement accuracy of the tensile test by accurately fixing the broken specimen after the tensile test. There is this.

In addition, it is disposed on the top of the second vertical rods (172a, 172b) that are engaged with the fixing plates (156a, 156b) of the pivoting stand (152a, 152b) and fixed to the other side of the fixed block (120) and the movable block (130). Springs 188a and 188b and springs which are disposed to surround the second vertical rods 172a and 172b in the clamp nuts 180a and 180b and the spring seating grooves 186a and 186 formed in the clamp nuts 180a and 180b. Auxiliary nuts 190a and 190b for restricting the 188a and 188b to the spring seating grooves 186a and 186b are applied, thereby making it difficult to engage the pivot holders 152a and 152b with the locking bars 170a and 170b. There is an advantage that can be combined by light operation by hand.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the present invention described in the utility model registration claims. It will be appreciated.

Claims (9)

A base plate 112 having a first guide hole 114 extending from one adjacent position to another adjacent position, and fixedly disposed on an upper surface of one side of the base plate 112, and the base plate 112 at a central portion thereof. A fixing block 120 having a first V-shaped first recessed groove 122 through which one end of the test piece M is settled so as to penetrate to one side and the other side of the specimen, and the upper surface of the other side of the base plate 112. The movable block 130 is disposed to be movable toward the fixed block 120 and the second set groove 132 corresponding to the first set groove 122 so that the other end of the specimen (M) is placed in the center portion Base portion 110 having a; One end of the first vertical rods 154a and 154b and the first vertical rods 154a and 154b that have the same shape and are rotatably mounted on one side of the fixed block 120 and the movable block 130. The first set groove 122 and the second settle through the fixing plates 156a and 156b and the fixing plates 156a and 156b which are mounted and extend perpendicular to the first vertical bars 154a and 154b. Swivel fixing rods (152a, 152b) having tightening bolts (162a, 162b) extending to the groove (132) to fix the specimen (M), on the other side of the fixing block 120 and the moving block (130) The second vertical rods 172a and 172b and the second vertical rods 172a and 172b having seating rings 178a and 178b mounted to each other and mounted at predetermined positions on which lower ends of the fixing plates 156a and 156b are seated. Locking pads (170a, 170b) having a clamp nut (180a, 180b) coupled to the upper portion of the fixing plates (156a, 156b) to clamp down Specimen-fixing jig comprises a clamp consisting of a first portion (150a) and a second clamping portion (150b). According to claim 1, wherein any one of the front or rear surface of the base plate 112 is marked on the upper surface to measure the length and the gauge length of the specimen (M) from one side adjacent to the other adjacent position A scale 118 having a second guide hole 119 extending therethrough is attached, and a fixing bolt 139 penetrating the second guide hole 119 is attached to the scale 118 in the moving block 130. Fixing jig for a specimen, characterized in that fastened to. According to claim 1, wherein the fixing jig for specimens, characterized in that the settling surface having a stepped shape of the inclined surface of the first settling groove (122) and the second settling groove (132). According to claim 1, The fixing block 120 is fixed by a screw penetrated from the bottom of one side of the base plate 112, the moving block 130 from the lower portion of the base plate 112 1 is disposed on the other upper surface of the base plate 112 by a guide bolt 140 extending through the guide hole 114, the head of the guide bolt 140 is the first guide hole 114 Fixed jig for a specimen, characterized in that is inserted into the guide groove 116 is formed radially wide along the first guide hole (114) in the lower portion. The first rotation of claim 4, wherein one side of the first settling groove 122 and the second settling groove 132 extends from the outside of the fixed block 120 and the moving block 130 to the inside. The groove 124 and the second rotary groove 134 are formed, and the second female screw 138 is formed on the inner circumferential surface on the other side of the first settle groove 122 and the second settle groove 134, the fixing The first coupling hole 126 and the second coupling hole 136 extending vertically from the top of the block 120 and the moving block 130 to the lower side are formed, and the first rotating groove 124 and the first A guide rod extending from the one side of the fixing block 120 to the other side of the moving block 130 across the first rotating groove 124 and the second rotating groove 134 in the second rotating groove 134. In addition, the first vertical rods 154a and 154b are mounted on the first rotary groove 124 and the second rotary groove 134, and the guide rods 1. 42 is rotatably mounted, and the first coupling hole 126 and the second coupling hole 136 respectively have a shape corresponding to the first female screw 128 and the second female screw 138 at a lower portion thereof. The holding jig for the test piece, characterized in that the second vertical rods (172a, 172b) having the first male screw (174a) and the second male screw (174b) is mounted. The fixing jig of claim 5, wherein a stop plate (144) is screwed on one side of the fixing block (120) to close one side of the first settling groove (122). The head of the tightening bolts (162a, 162b) is knurling the outer peripheral surface so that the user can smoothly rotate the tightening bolts (162a, 162b) and the tightening bolts (162a, 162b) The lower part of the) jig for fixing the specimen, characterized in that the ball flanger (164a, 164b) that can be smoothly fixed to the specimen (M) is mounted, respectively. The clamp nuts 180a and 180b of the clamp nuts 180a and 180b are formed with through holes 182a and 182b which can be moved upward and downward from the upper portions of the second vertical rods 172a and 172b, respectively. Spring seating grooves 184a and 184b each having a diameter larger than the diameter of the through holes 182a and 182b are formed from the upper surfaces of the nuts 180a and 180b to the lower adjacent positions of the through holes 182a and 182b. Specimen, characterized in that the mounting projections (186a, 186b) are respectively formed on the outer circumferential surface of the clamp nut (180a, 180b) so as to protrude radially corresponding to each other to smoothly rotate the clamp nut (180a, 180b) Fixed jig. The spring mounting grooves 184a and 184b respectively include springs 188a and 188b surrounding the second vertical rods 172a and 172b extending through the through holes 182a and 182b, respectively. And an auxiliary nut fastened to an upper portion of the second vertical rods 172a and 172b while defining the springs 188a and 188b in the spring seating grooves 184a and 184b in the upper portions of the springs 188a and 188b. 190a, 190b jig for specimens, characterized in that arranged respectively.