Scribing tool and mechanical property test circular sample distance carving device

Abstract

The scribing tool and the mechanical property test circular sample distance carving device are suitable for carving lines with different distances on sample workpieces of different models, the scribing tool comprises a body, the body is integrally formed by a handheld part, a transition part and a line carving part, the handheld part is arranged in an arc-shaped structure, an operator can conveniently hold the handheld part, and the transition part is arranged in the arc-shaped structure. The scribing part is driven to rotate in the circumferential direction of the scribing tool; the handheld part and the scribing part are arranged at the two ends of the transition part respectively, and a weight reduction groove is formed in one side or two sides of the transition part, so that the weight of the body is reduced, and scribing operation of an operator is facilitated; the scribing part is used for scribing two scale distances in the circumferential direction of the sample workpiece at the same time, the distance between the two scale distances is the preset distance, and the testing and measuring efficiency of the workpiece can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of inspection and detection device, and especially relates to a scribing tool and mechanical property test circular sample distance marking device. BACKGROUND

[0002] Generally, the gauge length in the test of the elongation at break of the sample workpiece needs to be manually marked by the tester, and is greatly affected by the operation level of the tester. When marking, after fixing the required gauge length by the vernier caliper, two points at both ends of the sample are marked four times in succession to form two complete gauge lengths. Since the surface of the sample workpiece is cylindrical and relatively smooth, the marking is often skewed, thick or inaccurate after slipping, and the error needs to be reduced by adjusting the vernier caliper and marking the gauge length again. The independently marked gauge length is thick and the marking efficiency is too low, which has certain influence on the efficiency and error of the measurement of the gauge length after break, and thus the test efficiency of the sample workpiece is reduced. SUMMARY

[0003] Therefore, the scribing tool solves the technical problem of low test efficiency of the sample workpiece caused by the method of the prior art.

[0004] A scribing tool is suitable for marking lines with different intervals on different models of sample workpieces, and comprises a body which is integrally formed by a hand-held part, a transition part and a marking line part, wherein,

[0005] The hand-held part is arranged in an arc-shaped structure to facilitate the hand holding of the operator and drive the marking line part to rotate along the circumference of the scribing tool;

[0006] The transition part is provided with the hand-held part and the marking line part at both ends, and is provided with a weight-reducing groove on one side or both sides to reduce the weight of the body and facilitate the marking operation of the operator;

[0007] The marking line part is used for marking two gauge lengths on the circumference of the sample workpiece at the same time, and the distance between the two gauge lengths is a preset interval.

[0008] Preferably, the marking line part is provided with an arc-shaped groove or an arched groove in the center line direction and on the bottom surface, the arc-shaped groove or the arched groove is matched with the shape of the stretching part of the sample workpiece, and a tapered groove is symmetrically arranged on both sides of the center line direction of the marking line part, the tapered groove is used for installing a tapered cutter, and the tapered groove is in communication with part of the arc-shaped groove or the arched groove to ensure that the large end of the tapered cutter is in contact with the stretching part of the sample workpiece.

[0009] Preferably, the two sides of the arc-shaped groove or the arched groove are provided with symmetrically arranged notches, which are used for enabling the large end of the taper-shaped cutter to contact the stretching part when the large end of the taper-shaped cutter is embedded in the sample workpiece at the scribing part, and enabling the large end of the taper-shaped cutter to scribe lines at the stretching part under the driving of the hand-held part

[0010] Secondly, a mechanical property test circular sample scribing distance device is provided, which is suitable for a sample workpiece and comprises the scribing tool and the base and the ejector rod, the top surface of the base is provided with a recess with a preset shape, and the recess is used for placing the sample workpiece to avoid rotation or displacement in a free state.

[0011] The two sides of the base are respectively provided with baffle plates, the baffle plate on one side is provided with a through hole at a position corresponding to the recess, and is provided with a bolt in communication with the through hole, the bolt is in threaded communication with the through hole, wherein,

[0012] After the sample workpiece is scribed by the scribing tool and subjected to a mechanical property stretching test, the sample workpiece after the test is placed on the recess, and the sample workpiece after the test is tightly pressed by one end of the ejector rod, the ejector rod is limited by rotating the bolt, and the distance change value of the scribe line on the sample workpiece after the stretching test is measured by the distance measuring tool.

[0013] Preferably, the axial direction of the through hole is parallel to the center line of the recess.

[0014] Preferably, the bolt is mounted on the top surface of the baffle plate, and the baffle plate connected with the bolt is in the shape of L.

[0015] Preferably, the height of the baffle plate in the vertical direction is greater than the height of the base.

[0016] Preferably, the recess is an arc-shaped groove or a V-shaped groove or a rectangular through groove.

[0017] The technical beneficial effects of the utility model are as follows:

[0018] The scribing tool can quickly draw two scale distances through the scribing part, the distance between the two scale distances is fixed, different types of sample workpieces adopt scribing tools with different distances, the scribing efficiency and precision of the sample workpiece are improved, the workpiece after stretching is fastened and measured through the cooperation of the recess and the ejector rod, and the manual mode is replaced. In the normal temperature stretching test, the scribing of the scale distance is changed from independent scribing to tool scribing, realizes the process from nothing to something, saves time, improves production efficiency, improves measurement accuracy, and makes a universal V-shaped iron base, which is suitable for different specifications of scribing parts, has strong applicability, and the device has simple overall structure, convenient operation, safety and labor saving. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and not all the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present disclosure.

[0020] Figure 1 It is a perspective view of the scribing tool;

[0021] Figure 2 It is a schematic view of the notch provided on the top surface of the scribing part;

[0022] Figure 3 It is a schematic view of the scribed line formed on the sample workpiece;

[0023] Figure 4 It is a schematic view of the overall structure of the present utility model, wherein,

[0024] 1, bolt; 2, through hole; 3, groove; 4, baffle; 5, stretching part; 6, base; 7, ejector rod; 81, hand-held part; 82, transition part; 83, scribing part; 831, arched groove; 832, tapered cutter; 833, notch; 9, sample workpiece. DETAILED DESCRIPTION

[0025] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0026] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0027] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this disclosure, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0028] like Figures 1 to 3 The marking tool shown is shown in Figure 3 As shown, it is suitable for marking lines of different spacing on different types of sample workpieces 9, including a body, which is formed in one piece by a handheld portion 81, a transition portion 82 and a marking portion 83, wherein

[0029] The handle 81 is provided with an arc-shaped structure, which is convenient for the operator to hold and drive the marking part 83 to rotate along the circumference of the marking tool. Preferably, arc grooves are respectively provided at both ends of the handle 81 for the operator's thumb and index finger or middle finger to be inserted, so as to facilitate the rotation operation of the handle 81.

[0030] The two ends of the transition part 82 are respectively provided with a hand-held part 81 and a marking part 83, and a weight-reducing groove is provided on one or both sides to reduce the weight of the body and facilitate the marking operation of the operator;

[0031] The engraved portion 83 is used to simultaneously engrave two gauge lengths in the circumferential direction of the sample workpiece 9. The distance between the two gauge lengths is a preset spacing, for example, 25mm, 30mm, 40mm, 50mm, 60mm or other distances, that is, the length of the engraved portion 83 is 25mm, 30mm, 40mm, 50mm, 60mm or other distances.

[0032] Further, such as Figure 2As shown, an arc groove or arch groove 831 is provided in the center line direction and on the bottom surface of the scoring portion 83, and the arc groove or arch groove 831 is adapted to the shape of the stretching portion 5 of the sample workpiece 9, and conical grooves are symmetrically provided on the two side surfaces in the center line direction of the scoring portion 83, and the conical groove is used to install a conical tool 832. Specifically, after the conical tool 832 is installed, the large end faces outward and is flush with the two side surfaces of the scoring portion 83, and the conical groove is connected with part of the arc groove or arch groove 831 to ensure that the large end of the conical tool 832 contacts the stretching portion 5 of the sample workpiece 9. Preferably, notches 833 are symmetrically provided on both sides of the arc groove or arch groove 831, and the notch 833 is used for the large end of the conical tool 832 to contact the stretching portion 5 when the scoring portion 83 is embedded in the sample workpiece 9, and the large end of the conical tool 832 is driven by the hand-held portion 81 to scribe lines in the stretching portion. Conical tool, the cross-sections of the large end and the small end of the conical tool 832 are both circular, for example, the NB9010-titanium alloy conical tool or the RDMW0501 R2.5 model tool in the prior art.

[0033] The marking portion 83 can quickly mark two gauge lengths, and the spacing between the two gauge lengths is fixed. Different types of sample workpieces 9 use marking fixtures with different spacings to improve the marking efficiency and accuracy of the sample workpiece 9.

[0034] like Figure 4 The mechanical properties test circular sample grading device shown is suitable for marking a sample workpiece 9. The sample workpiece 9 is preferably a mechanical test bar. The mechanical properties test sample grading device is used to measure the elongation after fracture of the mechanical test bar in a tensile test. For example, a marking fixture is used to form scale lines on the circumference or surface of the sample workpiece 9. After the test, the length change of the scale lines is measured to detect whether the mechanical properties of the sample workpiece 9 are qualified. It includes the above-mentioned marking fixture and a base 6 and a push rod 7. The push rod 7 is preferably provided with an external thread. The top surface of the base 6 is provided with a groove 3 of a preset shape. The groove 3 is used to place the sample workpiece 9 to prevent rotation or displacement in a free state. It can also cooperate with the base 6 and the push rod 7 to mark the workpiece before the tensile test.

[0035] Baffles 4 are provided on both sides of the base 6. A through hole 2 is provided on the baffle 4 on one side at a position corresponding to the groove 3. The through hole 2 is preferably provided with an internal thread and a bolt 1 connected to the through hole 2 is provided. The bolt 1 is connected to the through hole 2 in a threaded manner and in a vertical direction. Preferably, a handle is provided at one end of the bolt 1 to facilitate the rotation of the bolt 1 in the vertical direction.

[0036] After the sample workpiece 9 is scribed by the scribing tool and subjected to mechanical property tensile test, it is placed on the groove 3, and the scribed sample workpiece 9 after the test is tightly or clamped by one end of the ejector rod 7, and the ejector rod 7 is limited by rotating the bolt 1, and the distance change value of the scribed line on the sample workpiece 9 after the tensile test is measured by the distance measuring workpiece.

[0037] As the specific embodiment provided in the present case, the axial direction of the through hole 2 is parallel to the center line of the groove 3, the bolt 1 is installed on the top surface of the baffle 4, and the shape of the baffle 4 connected with the bolt 1 is L-shaped.

[0038] Further, the two baffles 4 and the base 6 are integrated, and the height of the baffle 4 in the vertical direction is greater than the height of the base 6, and the opposite surface of the baffle 4 without screw is provided with an embedded groove (not shown in the figure) at the position corresponding to the through hole 2, which cooperates with the ejector rod 7 to improve the clamping or tightness of the sample workpiece 9.

[0039] As the specific embodiment provided in the present case, the groove 3 is an arc-shaped groove or a V-shaped groove or a rectangular through groove.

[0040] The scribing tool includes various commonly used gage sizes: 25mm, 30mm, 40mm, 50mm, 60mm, a total of 5 scribing tools, all made of 45# steel, the overall height of the tool is 60mm, the front of the tool is engraved with the gage value, and the structure is designed in one piece. The upper end of the scribing tool is designed as a semicircular convex structure with a diameter of 25mm, which is convenient for handheld operation; the side surface is designed as a solid structure with a height of 23mm, a width of 11mm, and a depth of 10mm on both sides. The lower end of the scribing tool is designed as a semicircular arc structure matching the diameter of the sample, and the lower part of the 25mm and 30mm tools is provided with an avoidance angle structure.

[0041] The lower end of the scribing tool is fixed with a turning tool blade, and the turning tool blade is selected as a circular turning tool blade with a blade extending out by 0.4mm, and the tool bit part can rotate by 360°.

[0042] The test method is as follows:

[0043] First step: select the standard circular sample for normal temperature mechanical property test according to the test requirements (select the standard sample with a diameter of 6mm as an example), and place the sample with the corresponding size next to the right side of the top plate on the V-shaped iron base of the device.

[0044] Second step: pass the solid ejector rod with a diameter of 8mm through the opening of the left side of the top plate, so that the right end of the ejector rod is in close contact with the left end surface of the sample, and at the same time, a screw with a diameter of 5mm is installed in the opening at the upper part of the left end of the top plate, and the ejector rod is fixed by rotating the screw, so that the sample is fixed.

[0045] Third step: select the scribe tool matched with the size of the test sample (the standard sample with a diameter of 6mm corresponds to the scribe tool with a gauge of 30mm), hold the upper semicircular hand holding part of the scribe tool with the right palm, place the scribe tool at the parallel segment position of the test sample, keep the semicircular arc structure at the lower end of the scribe tool completely in contact with the test sample, gently apply force to make the scribe tool move vertically at the parallel segment position of the test sample, that is, the turning tool piece extended from the two side faces at the lower end of the scribe tool can complete the operation of scribing the gauge of the test sample, and two clear scribe lines are obtained, and the gauge between the two lines is 30mm.

[0046] Fourth step: repeat the third step to complete the scribing work of two groups of gauge lines. Then use the vernier caliper to confirm whether the scribed gauge meets the standard requirements, and after confirming that there is no error, the scribing work of the test sample is completed, and the test of the breaking elongation index can be carried out.

[0047] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A scribe tool suitable for scribing lines of different intervals on different types of sample workpieces, characterized in that, The body is integrally formed by a handheld part, a transition part and a scribing part, The handheld part is arranged in an arc structure to facilitate the hand holding of an operator to drive the scribing part to rotate along the circumference of the scribing tool. The transition part is provided with the handheld part and the scribing part at two ends, and is provided with a weight-reducing groove at one side or both sides to reduce the weight of the body and facilitate the scribing operation of the operator. The scribing part is used to simultaneously scribe two gauge distances on the circumference of a sample workpiece, and the distance between the two gauge distances is a preset interval.

2. The scribe tool of claim 1, wherein An arc-shaped groove or an arched groove is arranged on the center line direction of the scribing part and at the bottom surface, the arc-shaped groove or the arched groove is matched with the shape of the stretching part of the sample workpiece, and a tapered groove is symmetrically arranged on both sides of the center line direction of the scribing part, the tapered groove is used to install a tapered cutter, and the tapered groove is connected with part of the arc-shaped groove or the arched groove to ensure that the large end of the tapered cutter is in contact with the stretching part of the sample workpiece.

3. The scribe tool of claim 2, wherein The two sides of the arc-shaped groove or the arched groove are symmetrically provided with notches, the notches are used for the large end of the tapered cutter to be in contact with the stretching part when the large end of the tapered cutter is embedded in the sample workpiece, and the large end of the tapered cutter can perform scribing on the stretching part under the driving of the handheld part.

4. A mechanical property test round specimen scribing device, characterized by, The scribing tool, the base and the ejector rod are provided, the top surface of the base is provided with a recess of a preset shape, and the recess is used to place a sample workpiece. The two sides of the base are respectively provided with baffles, the baffle on one side is provided with a through hole at a corresponding position of the recess and is provided with a bolt connected with the through hole in a threaded manner, and the bolt is connected with the through hole in a threaded manner, wherein After the sample workpiece is scribed by the scribing tool and subjected to a mechanical property tensile test, the sample workpiece after the test is placed on the recess and is tightly pressed by one end of the ejector rod, the ejector rod is limited by rotating the bolt, and the distance change value of the scribed line on the sample workpiece after the tensile test is measured by a distance measuring workpiece.

5. The mechanical property test round specimen scribing device of claim 4, wherein, The axial direction of the through hole is parallel to the center line of the recess.

6. The mechanical property test round specimen scribing device of claim 5, wherein, The bolt is mounted on the top surface of the baffle, and the baffle connected with the bolt is in an L shape.

7. The mechanical property test round specimen scribing device of claim 6, wherein, The two baffles are integrally arranged with the base.

8. The mechanical property test round specimen scribing device of claim 7, wherein, The height of the baffle in the vertical direction is greater than the height of the base.

9. The mechanical property test round specimen scribing device of claim 8, wherein, The recess is a V-shaped groove.

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