CN213933353U - Rectangular pin structure clamp for thermal stretching of thermal simulation testing machine plate - Google Patents
Rectangular pin structure clamp for thermal stretching of thermal simulation testing machine plate Download PDFInfo
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- CN213933353U CN213933353U CN202022463283.7U CN202022463283U CN213933353U CN 213933353 U CN213933353 U CN 213933353U CN 202022463283 U CN202022463283 U CN 202022463283U CN 213933353 U CN213933353 U CN 213933353U
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Abstract
The utility model provides a thermal simulation testing machine panel heat is tensile with rectangle nail round pin structure anchor clamps, includes: the body, two holding pieces, two pull rods, two stationary blades. When a sample is loaded, the pull rods on the two sides are pulled to separate the nails and the pins of the two clamping pieces, the nail pins are reversely pushed back after the sample is placed, the rectangular nails penetrate through the rectangular holes at the two ends of the sample and are finally inserted into the grooves of the opposite semicircular pieces, and the plate-shaped tensile sample is well fixed. Anchor clamps have solved the problem that the slab band sample and the local deformation of high strength slab band sample centre gripping stress point of the different thickness of unable stable centre gripping of current thermal simulation machine tensile fixture, but the hot tensile fixture of centre gripping panel thickness scope wideer, panel exposed core non-deformable to satisfy the tensile research of the board strip thermal simulation of more specifications and different test requirements.
Description
Technical Field
The utility model relates to a thermal simulation technical field, concretely relates to thermal simulation testing machine panel is rectangle nail round pin structure anchor clamps for hot stretching.
Background
The thermal simulation testing machine is a device for reproducing and simulating the thermal processing process of the material, can simulate temperature, stress and strain, can research the key contents of deformation resistance, thermoplasticity, recrystallization behavior, phase change point, CCT curve measurement and the like of the material by completing a thermal compression test and a thermal tensile test by the device, and is excellent equipment for physical simulation in the field of thermal processing of the material. According to the different heating methods, the thermal simulation testing machine is divided into: induction heating and resistance heating. The induction heating type thermal simulator has the advantages that the temperature control is accurate, and a wider uniform temperature area of a sample can be ensured; the heating rate of the resistance heating type thermal simulator can be selected in a wider range, but the temperature gradient of the uniform temperature zone of the sample is obvious due to the adoption of resistance heating.
The traditional thermal simulation machine is only used for rod-shaped samples, and in recent years, a partial resistance heating type thermal simulation machine can be used for plate-shaped thermal simulation stretching, but the thickness of the samples is limited, the plate thickness is required to be less than 2mm, the preparation difficulty of the samples is greatly increased, and sufficient test information cannot be obtained. According to the prior art, if the advantage of reducing the temperature gradient of a uniform temperature zone of a sample by using induction heating is utilized, the plate-shaped thermal simulation stretching with the thickness of more than or equal to 2mm cannot be realized. In addition, the common plate-shaped thermal simulation tensile sample is provided with round holes at two clamping ends, stress points of the sample and the clamping structure are too concentrated in the thermal stretching process, and local deformation is easily generated on some alloy materials with higher strength, so that the accuracy of test measurement results is influenced.
Chinese patent CN201621383417.1 discloses a Gleeble thermal simulator-based flat plate normal-temperature/hot high-speed tensile experiment fixture; chinese patent CN201120448870.7 describes a plate stretching and clamping structure for a thermal simulator; chinese patent CN201020227042.6 describes a plate-strip hot-stretching clamp on a thermal simulation machine.
The plate-shaped thermal simulation tensile jig disclosed in the above patent is applied to a resistance heating type thermal simulator, and cannot achieve the purpose of reducing the temperature gradient of the heating region of the plate-shaped sample, and the thickness range of the plate-shaped sample to be tested is not described in detail.
In summary, in order to fully utilize the advantages of induction heating, expand the application of an induction heating type thermal simulator in the field of hot stretching of a plate strip, break through the limitation on the thickness of a plate-shaped thermal simulation tensile sample, and improve the problem of stress concentration of round-hole plate-shaped tensile samples at two ends, a clamp which is originally only suitable for a rod-shaped tensile sample needs to be redesigned, so that the sufficient clamping force and deformation stability of the plate-shaped thermal tensile sample in the hot stretching process are ensured, and the clamp is suitable for the hot stretching tests of the plate-shaped thermal tensile samples with different thicknesses at different temperatures and strains.
Disclosure of Invention
An object of the utility model is to provide a thermal simulation testing machine panel is rectangle nail round pin structure anchor clamps for hot drawing has solved the unable slab band sample and the problem of high strength slab band sample centre gripping stress point local deformation of stabilizing the different thickness of centre gripping of current thermal simulation machine tensile anchor clamps, can centre gripping panel thickness scope wideer, panel exposed core non-deformable's hot tensile anchor clamps to satisfy the tensile research of the board strip thermal simulation of more specifications and different test requirements.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model provides a thermal simulation testing machine panel heat is tensile with rectangle nail round pin structure anchor clamps, it includes: the body is a hollow cylinder with an opening at the upper end, the inner wall of the opening end is provided with internal threads connected with the upper end and the lower end of the thermal simulator, and the center of the bottom of the body is provided with a through hole for loading and unloading a sample; the left outer side wall and the right outer side wall of the body are two planes which are parallel to each other, and the lower parts of the two side walls are symmetrically provided with a mounting through hole respectively; the two clamping pieces are arranged in the body; the two clamping sheets are symmetrical semicircular sheets, and the middle parts of the opposite surfaces of the two clamping sheets are respectively provided with a convex rectangular nail and a rectangular groove which are matched with each other; steps are symmetrically arranged on two sides of the top surface of the clamping sheet; the two pull rods respectively extend into the body from the mounting through holes which are bilaterally symmetrical on the side wall of the body and are respectively connected with the two clamping pieces; the pull rod is a cylinder with a variable cross section, wherein a rod body at the rear part of the pull rod is provided with a step, and the step surface of the step is arranged in the length direction of the pull rod and corresponds to the rectangular nail and the rectangular groove of the two clamping sheets which are mutually embedded when the step surface is abutted against the outer side wall of the plane of the body; the two fixing pieces are symmetrically arranged on one side of the body, corresponding to the two clamping pieces, provided with the steps; one side surface of the fixing piece is a plane facing the steps of the clamping pieces, the other side surface of the fixing piece is an arc surface matched with the inner wall of the body, the bottom surface of one side, corresponding to the steps of the clamping pieces, of the fixing piece is provided with a limiting step matched with the steps, the clamping pieces move along the limiting step, and the other side of the fixing piece is connected to the bottom of the body through bolts.
Preferably, the front end part of the rectangular nail is provided with a chamfer angle of 1-2 mm, and the angle of the chamfer angle and the axis of the rectangular nail forms an angle of 20-35 degrees.
When a sample is loaded, the pull rods on the two sides are pulled to separate the nails and the pins of the two clamping pieces, the nail pins are reversely pushed back after the sample is placed, the rectangular nails penetrate through the rectangular holes at the two ends of the sample and are finally inserted into the grooves of the opposite semicircular pieces, and the plate-shaped tensile sample is well fixed.
The utility model has the advantages that:
the utility model discloses an induction heating formula thermal simulation testing machine is in the application of different thickness plate strip thermal simulation research fields, and the wide advantage of make full use of induction heating uniform temperature zone has improved heating region control accuracy, realizes the thermal treatment of plate strip, technological simulation such as hot stretching, welding, has expanded the restriction of thermal simulation circular sample to the raw materials specification, provides effectual means to the thermoplasticity and the hot working process of studying the plate strip.
Compare in the circular nail round pin structure of traditional fixed sample, the utility model discloses rectangle nail round pin structure anchor clamps are bigger with plate-like tensile sample's contact surface, and the sample stiff end is difficult to take place local deformation. And simultaneously, the utility model has the advantages of simple structure, workable, loading and unloading sample is convenient, and maneuverability is strong, and centre gripping sample is safe practical. Furthermore, the utility model discloses richen the anchor clamps type of induction heating formula thermal simulation machine, provided more, more suitable selection for the different test material.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention;
fig. 2 is a top view of an embodiment of the present invention;
fig. 3 is an exploded view of an embodiment of the present invention;
fig. 4 is an exploded perspective view of an embodiment of the present invention;
fig. 5 is a schematic view of a plate-like tensile specimen.
Detailed Description
Referring to fig. 1-5, the utility model discloses a thermal simulation testing machine panel is rectangle pinning structure anchor clamps for hot drawing, it includes:
the body 1 is a hollow cylinder with an opening at the upper end, the inner wall of the opening end is provided with an internal thread 101 connected with the upper end and the lower end of the thermal simulator, and the center of the bottom of the body 1 is provided with a through hole 102 for loading and unloading a sample 100; the left outer side wall and the right outer side wall of the body 1 are two planes 103 which are parallel to each other, and the lower parts of the two side walls are symmetrically provided with a mounting through hole 104 respectively;
the two clamping pieces 2 and 2' are arranged in the body 1; the two clamping sheets 2 and 2 ' are symmetrical semicircular sheets, and the middle parts of the opposite surfaces of the two clamping sheets 2 and 2 ' are respectively provided with a convex rectangular nail 21 and a rectangular groove 21 ' which are matched with each other; steps 22 and 22 'are symmetrically arranged on the two sides of the top surfaces of the clamping sheets 2 and 2';
the two pull rods 3 and 3 'respectively extend into the body 1 from the mounting through holes 104 which are arranged on the side wall of the body 1 in a bilateral symmetry manner and are respectively connected with the two clamping pieces 2 and 2'; the pull rod 3 (taking the pull rod 3 as an example, the same applies below) is a cylinder with a variable cross section, wherein a step is arranged on the rear rod body of the pull rod 3, and the rectangular nail 21 and the rectangular groove 21 'of the two clamping sheets 2 and 2' are mutually embedded when the step surface 31 of the step is arranged in the length direction of the pull rod 3 and is abutted to the outer side wall of the plane of the body 1 corresponding to the step surface 31;
the two fixing pieces 4 and 4 ' are symmetrically arranged at one side of the body 1 corresponding to the two clamping pieces 2 and 2 ' and provided with steps 22 and 22 '; one side surface of the fixing piece 4 (taking the fixing piece 4 as an example, the same below) is a plane facing the steps of the clamping piece, the other side surface is an arc surface matched with the inner wall of the body 1, the bottom surface of one side of the fixing piece corresponding to the steps 22 and 22 ' is provided with limiting steps 41 and 41 ' matched with the steps 22 and 22 ', so that the clamping pieces 2 and 2 ' move along the limiting steps 41 and 41 ', and the other sides of the fixing pieces 4 and 4 ' are connected to the bottom of the body 1 through bolts 5 and 5 '.
Preferably, the front end part of the rectangular nail is provided with a chamfer angle of 1-2 mm, and the angle of the chamfer angle and the axis of the rectangular nail forms an angle of 20-35 degrees.
Referring to fig. 5, a plate-shaped tensile specimen 100 is shown with a square hole formed in each end.
The utility model discloses anchor clamps are used for platelike tensile sample's last lower extreme anchor clamps as induction heating formula thermal simulation testing machine. The clamp body is fixedly connected with the upper end and the lower end of the thermal simulation equipment through threads.
When a sample is loaded, the pull rod is pulled towards the direction far away from the center of the clamp to drive the clamping sheet to move towards the direction far away from the center of the clamp, so that the through hole for loading and unloading the sample at the center of the body is exposed, and two ends of the sample penetrate through the through hole; then pushing a pull rod connected with a clamping piece at one side of the rectangular nail towards the center of the clamp, enabling the rectangular nail to penetrate through square holes at two ends of the sample, then pushing the pull rod at the other side towards the center of the clamp, enabling the tail end of the rectangular nail of the other clamping piece to be inserted into the opposite rectangular groove, and firmly clamping two ends of the sample; after the sample is assembled, the thermal stretching or other thermal simulation tests of the plate-shaped sample can be carried out according to the operation flow of the thermal simulation equipment.
Claims (2)
1. The utility model provides a thermal simulation testing machine panel heat is tensile with rectangle nail round pin structure anchor clamps which characterized in that includes:
the body is a hollow cylinder with an opening at the upper end, the inner wall of the opening end is provided with internal threads connected with the upper end and the lower end of the thermal simulator, and the center of the bottom of the body is provided with a through hole for loading and unloading a sample; the left outer side wall and the right outer side wall of the body are two planes which are parallel to each other, and the lower parts of the two side walls are symmetrically provided with a mounting through hole respectively;
the two clamping pieces are arranged in the body; the two clamping sheets are symmetrical semicircular sheets, and the middle parts of the opposite surfaces of the two clamping sheets are respectively provided with a convex rectangular nail and a rectangular groove which are matched with each other; steps are symmetrically arranged on two sides of the top surface of the clamping sheet;
the two pull rods respectively extend into the body from the mounting through holes which are bilaterally symmetrical on the side wall of the body and are respectively connected with the two clamping pieces; the pull rod is a cylinder with a variable cross section, wherein a rod body at the rear part of the pull rod is provided with a step, and the step surface of the step is arranged in the length direction of the pull rod and corresponds to the rectangular nail and the rectangular groove of the two clamping sheets which are mutually embedded when the step surface is abutted against the outer side wall of the plane of the body;
the two fixing pieces are symmetrically arranged on one side of the body, corresponding to the two clamping pieces, provided with the steps; one side surface of the fixing piece is a plane facing the steps of the clamping pieces, the other side surface of the fixing piece is an arc surface matched with the inner wall of the body, the bottom surface of one side, corresponding to the steps of the clamping pieces, of the fixing piece is provided with a limiting step matched with the steps, the clamping pieces move along the limiting step, and the other side of the fixing piece is connected to the bottom of the body through bolts.
2. The rectangular pin structure clamp for the thermal stretching of the plate of the thermal simulation testing machine as claimed in claim 1, wherein a chamfer of 1-2 mm is processed at the front end of the rectangular pin, and the angle of the chamfer forms an angle of 20-35 degrees with the axis of the rectangular pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022463283.7U CN213933353U (en) | 2020-10-30 | 2020-10-30 | Rectangular pin structure clamp for thermal stretching of thermal simulation testing machine plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022463283.7U CN213933353U (en) | 2020-10-30 | 2020-10-30 | Rectangular pin structure clamp for thermal stretching of thermal simulation testing machine plate |
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| Publication Number | Publication Date |
|---|---|
| CN213933353U true CN213933353U (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022463283.7U Active CN213933353U (en) | 2020-10-30 | 2020-10-30 | Rectangular pin structure clamp for thermal stretching of thermal simulation testing machine plate |
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| Country | Link |
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| CN (1) | CN213933353U (en) |
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- 2020-10-30 CN CN202022463283.7U patent/CN213933353U/en active Active
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