CN218411966U - Clamp tool for stretching L-shaped eccentric test piece on universal testing machine - Google Patents

Clamp tool for stretching L-shaped eccentric test piece on universal testing machine Download PDF

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CN218411966U
CN218411966U CN202221801818.XU CN202221801818U CN218411966U CN 218411966 U CN218411966 U CN 218411966U CN 202221801818 U CN202221801818 U CN 202221801818U CN 218411966 U CN218411966 U CN 218411966U
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tool
column iron
shaped
frock
test piece
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王玲
尚晓峰
吕文政
王冬辉
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Shenyang Aircraft Industry Group Co Ltd
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Shenyang Aircraft Industry Group Co Ltd
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Abstract

The utility model provides a to the tensile anchor clamps frock of the eccentric test piece of L type on omnipotent experiment machine belongs to the machine-building field. The utility model comprises an upper part and a lower part which are respectively connected with the loading end and the clamping end of the L-shaped eccentric test piece, so that the action positions of the two ends of the L-shaped eccentric test piece which are not coaxial originally are converted into the same axis, the problem that the L-shaped material can not be fixedly assembled in a universal experiment machine is solved, the static force, fatigue and other experiments of a non-standard test piece and a test bar are realized, and the disassembly is convenient and efficient; and simultaneously, the utility model discloses a bolted connection has the characteristics of the location is accurate, the connection is quick, convenient nimble.

Description

Clamp tool for stretching L-shaped eccentric test piece on universal testing machine
Technical Field
The utility model belongs to the machine-building field relates to a to the tensile anchor clamps frock of the eccentric test piece of L type on universal testing machine.
Background
The main clamping device of omnipotent experiment machine all is concentric coaxial at present, only can adapt to standard platelike test piece or bar-shaped test rod, before the experiment, needs to use and presss from both sides tight frock and fix treating the test piece to this guarantee in the experimentation that the test piece can not drop and with omnipotent experiment machine cooperation correctly, guarantee the normal clear of experiment.
In order to research the service life index of a part with a certain L-shaped section structure, a static tension and fatigue test needs to be carried out on a universal testing machine. The L section bar does not have the interface relation with universal experiment machine, and belongs to eccentric structure, can not fix when meetting partial eccentric test piece, if take off partly on the test piece and experiment, can need processing cost time on the one hand, and on the other hand can lead to the experimental result not obtain under operating condition, destroys the error that the L shape can bring the experiment, loses the meaning of experiment.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a to the tensile anchor clamps frock of the eccentric test piece of L type on omnipotent experiment machine, this anchor clamps frock includes upper and lower two parts, is connected with the loading end and the exposed core of L section bar respectively, and loading end and exposed core are the both sides of L section bar respectively, turn into the tensile center of loading end through the frock concentric coaxial with the exposed core to this cooperatees with tensile experiment machine, guarantees the normal clear of experiment.
The technical scheme of the utility model:
the utility model provides a tensile anchor clamps frock to eccentric test piece of L type on universal tester, the anchor clamps frock includes upper portion column iron 1, frock upper portion 2, eight hex bolts 3, frock lower part 4, lower part column iron 5, eight packing rings 6 and eight nuts 7.
The upper column iron 1 and the lower column iron 5 are rod-shaped structures with the same structure and are vertically arranged, and a tool upper part 2 and a tool lower part 4 are arranged between the upper column iron 1 and the lower column iron 5. The upper column iron 1 and the lower column iron 5 are arranged oppositely, one end of the upper column iron is provided with threads, the polished rod part is provided with a flat groove, the flat groove is used for screwing and fastening and is convenient for a wrench to apply force at regular time, and the upper column iron 1 and the lower column iron 5 are used for being connected with a universal experiment machine jaw seat.
Frock upper portion 2 be L shape anchor clamps, frock lower part 4 is the flat clamp, frock upper portion 2 is used for pressing from both sides the loading end of dress L section bar, frock lower part 4 is used for pressing from both sides the exposed core of dress L section bar, frock upper portion 2 and frock lower part 4 are the U-shaped and frock upper portion 2 upper surface is parallel with frock lower part 4 lower surface through L section bar clamp back both.
The upper surface of the upper part 2 of the tool and the lower surface of the lower part 4 of the tool are both provided with threaded holes, the upper column iron 1 and the lower column iron 5 are respectively and fixedly connected with the upper part 2 of the tool and the lower part 4 of the tool through threaded ends, after connection, the upper column iron 1 is vertical to the upper surface of the upper part 2 of the tool, the lower column iron 5 is vertical to the lower surface of the lower part 4 of the tool, and the upper column iron and the lower column iron are coaxial;
the side of the tooling upper portion 2 and the tooling lower portion 4 are respectively provided with four holes, the four holes are arranged in a straight line and are equidistant, each surface of the L-shaped material is provided with a through hole corresponding to the positions of the holes of the tooling upper portion 2 and the tooling lower portion 4, the eight gaskets 6 are respectively placed on the outer sides of the eight holes, the eight hexagon bolts 3 sequentially penetrate through the L-shaped material, the tooling upper portion 2 or the tooling lower portion 4 and the eight gaskets 6 from inside to outside, and are screwed through the eight nuts 7, so that the clamping of the fixture to the L-shaped material is realized.
Furthermore, an included angle A formed by the inner surface of the side edge of the upper part 2 of the tool and the upper surface of the lower part 4 of the tool is the same as the angle of the L section bar required by the experiment, the angle range of the angle A is 45-135 degrees, in order to ensure that the upper surface of the upper part 2 of the tool is parallel to the lower surface of the lower part 4 of the tool, the L section bars with different angles need to be matched with the upper part 2 of the tool with different inner angle angles, and the inner angle is =180 degrees-A.
Furthermore, the flatness manufacturing tolerance of the fixture tool is +/-0.1 mm, and the roughness value of the working surface is not higher than Ra3.2.
The upper surface of the upper part 2 of the tool is parallel to the lower surface of the lower part 4 of the tool, and the action position of the loading end of the L-shaped section which is originally not coaxial is converted into the action position which is coaxial with the clamping end of the L-shaped section, so that the problem that a universal testing machine cannot be fixed and assembled at the same time can be solved, and the L-shaped section is connected with the universal testing machine; the upper part of the universal testing machine drives the upper column iron 1 to move, the upper part 2 of the tooling drives the L-shaped section loading end to move along with the upper column iron, so that the mechanical property detection of the universal testing machine on the L-shaped section is completed, and the normal operation of the experiment is ensured.
The assembly and use process of the clamp tool for stretching the L-shaped eccentric test piece on the universal testing machine comprises the following steps of:
step 1, inserting the threaded end of the upper column iron 1 into a threaded hole of the upper tool part 2 from the outer surface of the upper tool part 2, rotating the upper column iron 1 to completely screw the threads into the threaded hole of the upper tool part 2, and enabling the upper column iron 1 to be provided with a flat groove, so that a wrench is convenient to use to screw and fix the upper column iron 1.
And 2, inserting the threaded end of the lower column iron 5 into a threaded hole of the lower part 4 of the tool from the lower surface, rotating the lower column iron 5 to completely screw the threads into the threaded hole of the lower part 4 of the tool, and screwing and fixing the lower column iron 5 by using a wrench conveniently because a flat groove is formed in the lower column iron 5.
Step 3, placing the clamping end of the L-shaped section on the upper surface of the lower part 4 of the tool, aligning with 4 holes, sequentially inserting the hexagon bolts 3 into the L-shaped section and the lower part 4 of the tool, placing a gasket 6 on the other surface of the lower part 4 of the tool, and screwing a nut 7; the 4 bolts are assembled in the same way and adopt the same tightening torque.
Step 4, placing the loading end of the L-shaped section on the inner surface of the upper part 2 of the tool, aligning to 4 holes, sequentially inserting the hexagon bolts 3 into the L-shaped section and the upper part 2 of the tool, placing a gasket 6 on the other surface of the upper part 2 of the tool, and screwing a nut 7; the same assembly method is adopted for 4 bolts, the same tightening torque is adopted, and the tightening torque is the same as that in the step 3.
Step 5, after the steps 1-4, the L-shaped section and the fixture tool are assembled, the L-shaped section is tightly attached to the fixture tool, the upper surface and the lower surface of the fixture tool are parallel, and the upper column iron and the lower column iron are coaxial; the assembled whole device is arranged on the upper and lower jaw seats of the universal testing machine through the clamping grooves of the upper and lower column irons.
Wherein, the sequence of the steps 1 to 4 can be adjusted.
The utility model has the advantages that:
the utility model converts the action position of the loading end of the L section bar which is originally not coaxial into the action position coaxial with the clamping end of the L section bar, solves the problem that the L section bar can not be fixedly assembled in a universal experiment machine, realizes the experiments of static force, fatigue and the like of part grade (non-standard test piece and test bar), and has convenient disassembly and high efficiency; meanwhile, the whole fixture tool is connected through the bolts, and the fixture tool has the characteristics of accurate positioning, quick connection, convenience and flexibility.
Drawings
FIG. 1 is an isometric view of the tooling.
Fig. 2 is a schematic structural view of various parts of the tool.
In the figure: 1 upper column iron; 2, the upper part of the tool; 3 eight hexagon bolts; 4, the lower part of the tool; 5, lower column iron; 6, a gasket; 7 nuts.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
Examples
As shown in fig. 1 and 2, a fixture for stretching an L-shaped eccentric test piece on a universal testing machine comprises an upper column 1, a fixture upper part 2, eight hexagon bolts 3, a fixture lower part 4, a lower column 5, eight washers 6 and eight nuts 7.
The upper column iron 1 and the lower column iron 5 are rod-shaped structures with the same structure and are vertically arranged, and a tool upper part 2 and a tool lower part 4 are arranged between the upper column iron 1 and the lower column iron 5. The upper column iron 1 and the lower column iron 5 are arranged oppositely, one end of the upper column iron is provided with threads, the polished rod part is provided with a flat groove, the flat groove is used for screwing and fastening and is convenient for a wrench to apply force at regular time, and the upper column iron 1 and the lower column iron 5 are used for being connected with a universal experiment machine jaw seat.
Frock upper portion 2 be the anchor clamps of L shape, frock lower part 4 is the flat plate jig, frock upper portion 2 is used for pressing from both sides the loading end of dress L section bar, frock lower part 4 is used for pressing from both sides the exposed core of dress L section bar, frock upper portion 2 and frock lower part 4 are the U-shaped and frock upper portion 2 upper surface is parallel with frock lower part 4 lower surface through L section bar clamp back both.
The upper surface of the upper part 2 of the tool and the lower surface of the lower part 4 of the tool are both provided with threaded holes, the upper column iron 1 and the lower column iron 5 are respectively and fixedly connected with the upper part 2 of the tool and the lower part 4 of the tool through threaded ends, after connection, the upper column iron 1 is vertical to the upper surface of the upper part 2 of the tool, the lower column iron 5 is vertical to the lower surface of the lower part 4 of the tool, and the upper column iron and the lower column iron are coaxial;
the side of the tooling upper portion 2 and the tooling lower portion 4 are respectively provided with four holes, the four holes are arranged in a straight line and are equidistant, each surface of the L-shaped material is provided with a through hole corresponding to the positions of the holes of the tooling upper portion 2 and the tooling lower portion 4, the eight gaskets 6 are respectively placed on the outer sides of the eight holes, the eight hexagon bolts 3 sequentially penetrate through the L-shaped material, the tooling upper portion 2 or the tooling lower portion 4 and the eight gaskets 6 from inside to outside, and are screwed through the eight nuts 7, so that the clamping of the fixture to the L-shaped material is realized.
In this embodiment, the included angle a formed by the inner surface of the side edge of the upper tool part 2 and the upper surface of the lower tool part 4 is 90 degrees, and the included angle =180 ° - < a in the matched upper tool part 2 is 90 degrees in order to ensure that the upper surface of the upper tool part 2 is parallel to the lower surface of the lower tool part 4.
In the embodiment, the flatness of the fixture tool is manufactured within a tolerance of +/-0.1 mm, and the roughness value of the working surface is not higher than Ra3.2.
The assembly and use process of the clamp tool for stretching the L-shaped eccentric test piece on the universal testing machine comprises the following steps of:
step 1, inserting the threaded end of the upper column iron 1 into a threaded hole of the upper tool part 2 from the outer surface of the upper tool part 2, rotating the upper column iron 1 to completely screw the threads into the threaded hole of the upper tool part 2, and enabling the upper column iron 1 to be provided with a flat groove, so that a wrench is convenient to use to screw and fix the upper column iron 1.
And 2, inserting the threaded end of the lower column iron 5 into a threaded hole of the lower part 4 of the tool from the lower surface, rotating the lower column iron 5 to completely screw the threads into the threaded hole of the lower part 4 of the tool, and screwing and fixing the lower column iron 5 by using a wrench conveniently, wherein a flat groove is formed in the lower column iron 5.
Step 3, placing the clamping end of the L-shaped section on the upper surface of the lower part 4 of the tool, aligning with 4 holes, sequentially inserting the hexagon bolts 3 into the L-shaped section and the lower part 4 of the tool, placing a gasket 6 on the other surface of the lower part 4 of the tool, and screwing a nut 7; the 4 bolts are assembled in the same way and adopt the same tightening torque.
Step 4, placing the loading end of the L-shaped section on the inner surface of the upper part 2 of the tool, aligning 4 holes, sequentially inserting the hexagon bolts 3 into the L-shaped section and the upper part 2 of the tool, placing the washer 6 on the other surface of the upper part 2 of the tool, and screwing the nut 7; the same assembly method is adopted for 4 bolts, the same tightening torque is adopted, and the tightening torque is the same as that in the step 3.
Step 5, after the steps 1-4, the L-shaped section and the fixture tool are assembled, the L-shaped section is tightly attached to the fixture tool, the upper surface and the lower surface of the fixture tool are parallel, and the upper column iron and the lower column iron are coaxial; the assembled whole device is arranged on the upper and lower jaw seats of the universal testing machine through the clamping grooves of the upper and lower column irons.
The above-mentioned embodiments only represent embodiments of the present invention, but can not be understood as limitations to the scope of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (3)

1. A clamp tool for stretching an L-shaped eccentric test piece on a universal testing machine is characterized by comprising upper column iron (1), a tool upper part (2), eight hexagon bolts (3), a tool lower part (4), lower column iron (5), eight gaskets (6) and eight nuts (7);
the upper tool part (2) is an L-shaped clamp, the lower tool part (4) is a flat plate clamp, the upper tool part (2) is used for clamping a loading end of the L-shaped section, the lower tool part (4) is used for clamping a clamping end of the L-shaped section, the upper tool part (2) and the lower tool part (4) are U-shaped after being clamped by the L-shaped section, and the upper surface of the upper tool part (2) is parallel to the lower surface of the lower tool part (4); the included angle A formed by the inner surface of the side edge of the upper part (2) of the tool and the upper surface of the lower part (4) of the tool is the same as the angle of the L-shaped material required by the experiment; in order to ensure that the upper surface of the upper part (2) of the tool is parallel to the lower surface of the lower part (4) of the tool, L-shaped sections with different angles need to be matched with the upper part (2) of the tool with different inner angle angles, and the inner angle is =180 DEG-A;
the upper column iron (1) and the lower column iron (5) are rod-shaped structures with the same structure and are vertically arranged, and a tool upper part (2) and a tool lower part (4) are arranged between the upper column iron (1) and the lower column iron (5); the upper column iron (1) and the lower column iron (5) are arranged oppositely, one end of the upper column iron is provided with threads, the polished rod part is provided with a flat groove, the flat groove is used for facilitating force application of a wrench when the upper column iron and the lower column iron are screwed and fixed, and the upper column iron (1) and the lower column iron (5) are used for being connected with a universal experiment machine jaw seat;
the upper surface of the upper part (2) of the tool and the lower surface of the lower part (4) of the tool are respectively provided with a threaded hole, the upper column iron (1) and the lower column iron (5) are respectively and fixedly connected with the upper part (2) of the tool and the lower part (4) of the tool through threaded ends, after connection, the upper column iron (1) is vertical to the upper surface of the upper part (2) of the tool, the lower column iron (5) is vertical to the lower surface of the lower part (4) of the tool, and the upper column iron and the lower column iron are coaxial;
frock upper portion (2) side and frock lower part (4) on respectively be equipped with four holes, four holes are a word arrangement and equidistance, each face of L section bar corresponds the position and sets up the through-hole, corresponds with the position in the hole of frock upper portion (2) and frock lower part (4) respectively, eight packing rings (6) are placed respectively in the outside in eight holes, eight hex bolts (3) are from inside to outside passed L section bar, frock upper portion (2) or frock lower part (4) and eight packing rings (6) respectively in proper order to screw through eight nuts (7), realize the clamp dress of anchor clamps frock to L section bar.
2. The clamp tool for stretching the L-shaped eccentric test piece on the universal testing machine as claimed in claim 1, wherein the included angle A formed by the inner surface of the side edge of the upper tool part (2) and the upper surface of the lower tool part (4) is within the range of 45-135 degrees.
3. The fixture tool for stretching the L-shaped eccentric test piece on the universal testing machine as claimed in claim 1, wherein the flatness of the fixture tool has a manufacturing tolerance of ± 0.1mm, and the roughness value of the working surface is not higher than Ra3.2.
CN202221801818.XU 2022-07-13 2022-07-13 Clamp tool for stretching L-shaped eccentric test piece on universal testing machine Active CN218411966U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221801818.XU CN218411966U (en) 2022-07-13 2022-07-13 Clamp tool for stretching L-shaped eccentric test piece on universal testing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221801818.XU CN218411966U (en) 2022-07-13 2022-07-13 Clamp tool for stretching L-shaped eccentric test piece on universal testing machine

Publications (1)

Publication Number Publication Date
CN218411966U true CN218411966U (en) 2023-01-31

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CN202221801818.XU Active CN218411966U (en) 2022-07-13 2022-07-13 Clamp tool for stretching L-shaped eccentric test piece on universal testing machine

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CN (1) CN218411966U (en)

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