CN112795855A - Training device and training method of shape memory alloy wire for weaving - Google Patents
Training device and training method of shape memory alloy wire for weaving Download PDFInfo
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- CN112795855A CN112795855A CN202011479792.7A CN202011479792A CN112795855A CN 112795855 A CN112795855 A CN 112795855A CN 202011479792 A CN202011479792 A CN 202011479792A CN 112795855 A CN112795855 A CN 112795855A
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 113
- 238000009941 weaving Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000004677 Nylon Substances 0.000 claims description 45
- 229920001778 nylon Polymers 0.000 claims description 45
- 239000004065 semiconductor Substances 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 238000009940 knitting Methods 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 229910000734 martensite Inorganic materials 0.000 claims description 4
- 229910001566 austenite Inorganic materials 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000835 fiber Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003446 memory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/006—Resulting in heat recoverable alloys with a memory effect
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/01—Shape memory effect
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manipulator (AREA)
Abstract
The invention relates to a training device and a training method of a shape memory alloy wire for weaving, which can train the shape memory alloy wire and comprises a clamping system, a stretching system, a sensing control system and a heating and cooling system; wherein, the clamping system clamps a shape memory alloy wire; the stretching system is positioned on one side of the clamping system, and one end of the shape memory alloy wire is connected to the stretching system and is stretched by the stretching system; the sensing control system is respectively and electrically connected with the shape memory alloy wire, the stretching system and the heating and cooling system; the heating and cooling system is arranged on one side of the shape memory alloy wire and can heat and cool the shape memory alloy wire. The invention can carry out stretching training on the filament bundle consisting of the monofilaments with the length of several meters and a plurality of fibers, and has the characteristics of economical manufacturing cost, large working range, small occupied space, high temperature circulation efficiency, strong expansibility, realization of automatic control and the like.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a metal processing device and a processing method thereof, in particular to a training device and a training method of a shape memory alloy wire for weaving, and belongs to the technical field of metal material processing.
[ background of the invention ]
The shape memory alloy is a novel functional material with deformation recovery capability, and the main characteristics of the shape memory alloy comprise a shape memory effect and a super-elastic effect. The shape memory effect is exhibited when it is in the martensitic state and heating can cause it to return to its original shape. The superelasticity effect is embodied in the action of temperature and stress, the shape memory alloy can generate phase change and recovery stress, and can recover to the initial state after the load is removed. As an intelligent material, the shape memory alloy driver has wide application prospect, has the characteristics of high specific energy, can be used as a sensor at the same time, and can work in a high-strength structure.
In practical application, in order to improve the material performance, the shape memory alloy which is delivered from the factory needs to be trained. Among the training methods currently employed are those that stretch to a target prestrained length and then heat recover. The training mode can stabilize the mechanical property and improve the recovery stress. In the preparation of pre-strained shape memory alloy fabrics, several meters of continuous, trained, pre-strained shape memory alloy wire are required to match the size of the article and to ensure the efficiency of loom production. However, there is currently a lack of apparatus and methods to train on such long shape memory alloy wires, and it is difficult to manufacture large braid structures of shape memory alloys with pre-strain.
Therefore, in order to solve the above technical problems, it is necessary to provide an innovative training device for weaving shape memory alloy wires and a training method thereof, so as to overcome the above-mentioned drawbacks in the prior art.
[ summary of the invention ]
In order to solve the above problems, an object of the present invention is to provide a training device for shape memory alloy filaments for weaving, which can perform a stretching training on a filament bundle composed of a plurality of filaments and a plurality of fibers having a length of several meters, and has the characteristics of economical manufacturing cost, large working range, small occupied space, high temperature cycle efficiency, strong expansibility, and capability of realizing automatic control.
Another object of the present invention is to provide a training method for a shape memory alloy wire for knitting.
In order to achieve the first object, the invention adopts the technical scheme that: a training device for weaving shape memory alloy wires can train the shape memory alloy wires and comprises a clamping system, a stretching system, a sensing control system and a heating and cooling system; wherein, the clamping system clamps a shape memory alloy wire; the stretching system is positioned on one side of the clamping system, and one end of the shape memory alloy wire is connected to the stretching system and is stretched by the stretching system; the sensing control system is respectively and electrically connected with the shape memory alloy wire, the stretching system and the heating and cooling system; the heating and cooling system is arranged on one side of the shape memory alloy wire and can heat and cool the shape memory alloy wire.
The training device for the shape memory alloy wire for weaving is further provided with: the clamping system comprises a metal supporting rod, a plastic anchor, a nylon pulley and a clamp; the metal supporting rod is vertically arranged on the plastic anchor and is provided with a plurality of holes; the nylon pulley is pivoted on the opening; the clamp is fixed on the metal support rod and can clamp the shape memory alloy wire.
The training device for the shape memory alloy wire for weaving is further provided with: the metal support rods are provided with two metal support rods, and a plurality of nylon pulleys are arranged from top to bottom.
The training device for the shape memory alloy wire for weaving is further provided with: the stretching system comprises a rack, a screw rod sliding table, a motor, a nylon sliding block, a pull rod and a track; the screw rod sliding table is arranged on the upper layer of the rack and is connected with the motor through the coupler, so that the motor drives the screw rod sliding table; the track is arranged on the lower layer of the rack; the nylon sliding block is arranged on the track and can slide along the track; one end of the pull rod is abutted against one side of the screw rod sliding table, and the pull rod can be driven in a single direction through the screw rod sliding table; the other end of the pull rod is connected to the nylon sliding block, so that the pull rod is linked with the nylon sliding block.
The training device for the shape memory alloy wire for weaving is further provided with: the sensing control system comprises a temperature sensor, a displacement sensor, a tension sensor, a data acquisition device and an upper computer; the temperature sensor is arranged on the shape memory alloy wire; the displacement sensor is arranged below the nylon sliding block; the tension sensor is arranged on the nylon sliding block and is connected with the shape memory alloy wire; the temperature sensor, the displacement sensor and the tension sensor are respectively and electrically connected to the data acquisition device; the data acquisition device is electrically connected to the upper computer.
The training device for the shape memory alloy wire for weaving is further provided with: the displacement sensor is a pull rod type linear displacement sensor; the tension sensor is an S-shaped tension and pressure sensor.
The training device for the shape memory alloy wire for weaving is further provided with: the motor is connected with a motor driver; the motor driver is electrically connected to the upper computer.
The training device for the shape memory alloy wire for weaving is further provided with: the heating and cooling system comprises a programmable direct-current power supply, a semiconductor refrigerating sheet assembly, a front fan, a back fan and supporting legs; two electrodes of the programmable direct current power supply are connected to two ends of the shape memory alloy wire and are communicated with an upper computer through a serial interface, and the shape memory alloy wire is electrified under the command of the upper computer to generate heat; the semiconductor chilling plate assembly is arranged on the supporting leg and is arranged on one side of the shape memory alloy wire; the front fan is installed on one side, close to the shape memory alloy wire, of the semiconductor chilling plate assembly, and the back fan is installed on one side, far away from the shape memory alloy wire, of the semiconductor chilling plate assembly.
The training device for the shape memory alloy wire for weaving is also provided with the following components: the semiconductor refrigerating piece assembly comprises a cooling plate, a semiconductor refrigerating piece and a heat dissipation plate; the semiconductor refrigeration piece is respectively adhered to the cooling plate and the heat dissipation plate; the front fan is mounted on the cooling plate; the heat dissipation plate is provided with the back fan; the fan and the cooling plate are connected to a relay, and the relay is connected with a data acquisition device.
In order to achieve the first object, the invention adopts the technical scheme that: a training method of shape memory alloy wires for weaving comprises the following process steps:
step 1), cutting a shape memory alloy wire with a proper length, and installing the shape memory alloy wire on a training device;
step 2), inputting the length of each training stretch, the temperature and the times during recovery in the upper computer control software;
step 3), connecting the programmable direct current power supply to two ends of the shape memory alloy wire but not electrifying, and installing the temperature sensor on the shape memory alloy wire;
step 4), pre-stretching, namely enabling a motor to operate to drive the sliding table, driving the nylon sliding block to move at the speed of 1mm/s through the pull rod until the reading of the tension sensor is greater than 0, and recording the initial position of the motor;
step 5), the motor continues to operate to drive the sliding table, the nylon sliding block is driven by the pull rod to move at the speed of 1mm/s, and the alloy wire is stretched to a preset length;
step 6), after the preset position is reached, the motor reversely rotates to drive the sliding table to return to the initial position;
step 7), the programmable direct current power supply outputs current under the command of the upper computer; the alloy wire is electrified, the temperature rises to reach the austenite phase transition temperature, the alloy wire contracts and drives the nylon sliding block to move back until the nylon sliding block is contacted with the sliding table;
step 8), the programmable direct-current power supply stops outputting current, the upper computer enables a relay of the cooling system to be electrified, the semiconductor cooling system starts to operate, the semiconductor refrigerating sheet assembly and the front fan as well as the back fan start to operate, cold air is blown onto the alloy wire, and the temperature of the alloy wire is reduced to the martensite phase transition temperature;
and 9) repeating the steps 5) to 8) until the preset training times are reached.
Compared with the prior art, the invention has the following beneficial effects:
1. the shape memory alloy wire is turned by the roller, so that the stretching length of the shape memory alloy wire can be increased, the monofilament with the length of several meters and the tows formed by a plurality of fibers can be stretched, the training efficiency is greatly improved, the working range of the device is large, the occupied space is small, and the cost is low.
2. The semiconductor refrigeration system is arranged, so that the cooling speed is increased, and the working temperature range is enlarged.
3. The invention has high temperature circulation efficiency and strong expansibility, can realize automatic control and has high application value in engineering.
[ description of the drawings ]
FIG. 1 is a schematic view of the general structure of the training device for weaving shape memory alloy wires according to the present invention.
Fig. 2 is a schematic view of the clamping system of fig. 1.
Fig. 3 is a schematic view of the stretching system of fig. 1.
Fig. 4 is a schematic structural diagram of the stretching system and the sensing control system in fig. 1.
Fig. 5 is a schematic configuration diagram of the cooling system in fig. 1.
Fig. 6 is a schematic view of the structure of the back side of the cooling system in fig. 1.
Fig. 7 is a side view of the cooling system of fig. 1.
Fig. 8 is a perspective view of the semiconductor chilling plate assembly of fig. 7.
[ detailed description ] embodiments
Referring to the drawings 1 to 8, the invention provides a training device for weaving shape memory alloy wires, which can train the shape memory alloy wires 100, and comprises a clamping system 10, a stretching system 20, a sensing control system 30, a heating and cooling system 40 and the like.
Wherein, the clamping system 10 clamps the shape memory alloy wire 100. The stretching system 20 is located on one side of the clamping system 10, and the shape memory alloy wire 100 is connected to the stretching system 20 at one end and is stretched by the stretching system 20. The sensing control system 30 is electrically connected with the shape memory alloy wire 100, the stretching system 20 and the heating and cooling system 40 respectively. The heating and cooling system 40 is disposed on one side of the shape memory alloy wire 100, the heating system can heat the shape memory alloy wire 100, and the cooling system can cool the shape memory alloy wire 100.
Specifically, the clamping system 10 is composed of a metal support rod 11, a plastic anchor 12, a nylon pulley 13, a clamp 15, and the like. The metal support rod 11 is vertically installed on the plastic anchor 12, so that the shape memory alloy wire 100 is insulated from the ground when being electrified. In this embodiment, two metal support rods 11 are provided, a plurality of openings 14 are formed in the metal support rods, and the nylon pulley 13 is pivoted on the openings 14; namely, the metal support bar 11 is provided with a plurality of nylon pulleys 13 from top to bottom, and the number and the positions of the nylon pulleys 13 can be adjusted according to the length of the shape memory alloy wire 100.
Further, the clamp 15 is fixed on the upper portion of one of the metal support rods 11, and can clamp one end of the shape memory alloy wire 100, the shape memory alloy wire 100 is sequentially wound on the nylon pulley 13, so that the turning of the shape memory alloy wire 100 is realized, and thus, one-time training can be performed on the shape memory alloy wire 100 of several meters, and the specific winding mode of the shape memory alloy wire 100 is shown in fig. 1. The other end of the shape memory alloy wire 100 is led out from the lowermost nylon pulley 13 to the drawing system 20.
The stretching system 20 is composed of a frame 21, a screw rod sliding table 22, a motor 23, a nylon sliding block 24, a pull rod 25, a track 26 and the like. Wherein, lead screw slip table 22 installs in the frame 21 upper strata, and it is connected with motor 23 through shaft coupling 27, makes motor 21 drive lead screw slip table 22 remove, and lead screw slip table 22 is prior art, and no longer the repeated description here.
The track 26 is arranged at the lower layer of the frame 21; the nylon sliders 24 are disposed on the rails 26 and can slide along the rails 26. One end of the pull rod 25 is abutted against one side of the screw rod sliding table 22, the pull rod 25 can be driven in a single direction through the screw rod sliding table 22, and the other end of the pull rod 25 is connected to the nylon sliding block 24, so that the pull rod 25 is linked with the nylon sliding block 24. When the motor 23 rotates forwards, the movable screw rod sliding table 22 drives the nylon sliding block 24 to move through the pull rod 25, when the motor rotates backwards, the pull rod 25 and the screw rod sliding table 22 are separated, the pull rod 25 is not moved, and the nylon sliding block 24 is stopped at the original position.
The sensing control system 30 is composed of a temperature sensor 31, a displacement sensor 32, a tension sensor 33, a data acquisition device 34, an upper computer 35 and the like. Wherein, the temperature sensor 31 is installed on the shape memory alloy wire 100, and can read the temperature on the shape memory alloy wire 100. The displacement sensor 32 is installed below the nylon slider 24, and can read the moving distance of the nylon slider 24. The tension sensor 33 is mounted on the nylon slider 24, which is connected to the shape memory alloy wire 100, and can read the prestress applied to the shape memory alloy wire 100. In the present embodiment, the displacement sensor 32 is a pull rod type linear displacement sensor, but other types of displacement sensors may be used. The tension sensor is an S-shaped tension and pressure sensor.
Further, the temperature sensor 31, the displacement sensor 32 and the tension sensor 33 are respectively electrically connected to a data acquisition device 34, the data acquisition device 34 is electrically connected to an upper computer 35, that is, output lines of the sensors 31, 32 and 33 are all connected to the data acquisition device 34, and then the data acquisition device 34 transmits acquired signals to the upper computer 35.
The motor 23 of the stretching system 20 is connected with a motor driver 28; the motor driver 28 is electrically connected to the upper computer 35, and the motor driver 28 is controlled by the upper computer 35.
The heating and cooling system 40 is composed of a programmable dc power supply 41, a semiconductor chilling plate assembly 42, a front fan 43, a back fan 44, and support legs 45. The two electrodes of the programmable dc power supply 41 are connected to the two ends of the shape memory alloy wire 100, and are connected to the upper computer 35 through a serial interface, so that the shape memory alloy wire 100 can be powered on to generate heat under the command of the upper computer.
The semiconductor chilling plate assembly 42 is mounted on the supporting leg 45, is disposed at one side of the shape memory alloy wire 100, and can cool the shape memory alloy wire 100. The front fan 43 is installed on one side of the semiconductor chilling plate assembly 42 close to the shape memory alloy wire 100, and the back fan 44 is installed on one side of the semiconductor chilling plate assembly 42 far away from the shape memory alloy wire 100.
And further. The semiconductor chilling plate assembly 42 is composed of three parts, namely a cooling plate 421, a semiconductor chilling plate 422 and a heat dissipation plate 423. The semiconductor cooling plate 422 is respectively adhered to the cooling plate 421 and the heat dissipating plate 423. The front fan 43 is mounted on the cooling plate 421; the heat dissipating plate 423 is mounted with the back fan 44, and the back of the heat dissipating plate 423 is provided with heat dissipating fins 424 to increase the heat dissipating speed. The fans 43 and 44 and the cooling plate 421 are connected to a relay 46, the relay 46 is connected to the data acquisition device 34, and the data acquisition device 34 is used to control the on/off of the relay 46.
The method for training the shape memory alloy wire by adopting the training device for weaving the shape memory alloy wire comprises the following process steps:
step 1), cutting a shape memory alloy wire 100 with a proper length, and installing the shape memory alloy wire 100 on a training device;
step 2), inputting the length of each training stretch, the temperature and the times of recovery in the control software of the upper computer 35;
step 3), connecting the programmable direct current power supply 41 to two ends of the shape memory alloy wire 100 but not electrifying, and installing the temperature sensor 31 on the shape memory alloy wire 100;
step 4), pre-stretching, namely enabling the motor 23 to operate to drive the screw rod sliding table 22, driving the nylon sliding block 24 to move at the speed of 1mm/s through the pull rod 25 until the reading of the tension sensor 33 is greater than 0, and recording the initial position of the motor 23;
step 5), the motor 23 continues to operate to drive the screw rod sliding table 22, the nylon sliding block 24 is driven to move at the speed of 1mm/s through the pull rod 25, and the alloy wire 100 is stretched to a preset length;
step 6), after the preset position is reached, the motor 23 rotates reversely to drive the screw rod sliding table 22 to return to the initial position;
step 7), the programmable direct current power supply 41 outputs current under the command of the upper computer 35; when the alloy wire 100 is electrified, the temperature rises to reach the austenite phase transition temperature, the alloy wire 100 contracts, and the nylon sliding block 24 is driven to move back until the nylon sliding block is contacted with the screw rod sliding table 22;
step 8), the programmable direct current power supply 41 stops outputting current, the upper computer 35 enables a relay 46 of the cooling system to be electrified, the semiconductor refrigerating sheet assembly 42, the front fan 43 and the back fan 44 start to operate, the fan 43 blows cold air onto the alloy wire 100, and the temperature of the alloy wire 100 is reduced to the martensite phase transition temperature;
and 9) repeating the steps 5) to 8) until the preset training times are reached.
The above embodiments are merely preferred embodiments of the present disclosure, which are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present disclosure, should be included in the scope of the present disclosure.
Claims (10)
1. A training device for weaving shape memory alloy wires, which can train the shape memory alloy wires, is characterized in that: the device comprises a clamping system, a stretching system, a sensing control system and a heating and cooling system; wherein, the clamping system clamps a shape memory alloy wire; the stretching system is positioned on one side of the clamping system, and one end of the shape memory alloy wire is connected to the stretching system and is stretched by the stretching system; the sensing control system is respectively and electrically connected with the shape memory alloy wire, the stretching system and the heating and cooling system; the heating and cooling system is arranged on one side of the shape memory alloy wire and can heat and cool the shape memory alloy wire.
2. The training device of shape memory alloy wire for knitting according to claim 1, characterized in that: the clamping system comprises a metal supporting rod, a plastic anchor, a nylon pulley and a clamp; the metal supporting rod is vertically arranged on the plastic anchor and is provided with a plurality of holes; the nylon pulley is pivoted on the opening; the clamp is fixed on the metal support rod and can clamp the shape memory alloy wire.
3. The training device of shape memory alloy wire for knitting according to claim 2, characterized in that: the metal support rods are provided with two metal support rods, and a plurality of nylon pulleys are arranged from top to bottom.
4. The training device of shape memory alloy wire for knitting according to claim 1, characterized in that: the stretching system comprises a rack, a screw rod sliding table, a motor, a nylon sliding block, a pull rod and a track; the screw rod sliding table is arranged on the upper layer of the rack and is connected with the motor through the coupler, so that the motor drives the screw rod sliding table; the track is arranged on the lower layer of the rack; the nylon sliding block is arranged on the track and can slide along the track; one end of the pull rod is abutted against one side of the screw rod sliding table, and the pull rod can be driven in a single direction through the screw rod sliding table; the other end of the pull rod is connected to the nylon sliding block, so that the pull rod is linked with the nylon sliding block.
5. The training device of shape memory alloy wire for knitting according to claim 1, characterized in that: the sensing control system comprises a temperature sensor, a displacement sensor, a tension sensor, a data acquisition device and an upper computer; the temperature sensor is arranged on the shape memory alloy wire; the displacement sensor is arranged below the nylon sliding block; the tension sensor is arranged on the nylon sliding block and is connected with the shape memory alloy wire; the temperature sensor, the displacement sensor and the tension sensor are respectively and electrically connected to the data acquisition device; the data acquisition device is electrically connected to the upper computer.
6. The training device of shape memory alloy wire for knitting according to claim 5, characterized in that: the displacement sensor is a pull rod type linear displacement sensor; the tension sensor is an S-shaped tension and pressure sensor.
7. The training device of shape memory alloy wire for knitting according to claim 5, characterized in that: the motor is connected with a motor driver; the motor driver is electrically connected to the upper computer.
8. The training device of shape memory alloy wire for knitting according to claim 1, characterized in that: the heating and cooling system comprises a programmable direct-current power supply, a semiconductor refrigerating sheet assembly, a front fan, a back fan and supporting legs; the two electrodes of the programmable direct current power supply are connected to two ends of the shape memory alloy wire and connected with an upper computer through a serial interface, so that the shape memory alloy wire is electrified to generate heat; the semiconductor chilling plate assembly is arranged on the supporting leg and is arranged on one side of the shape memory alloy wire; the front fan is installed on one side, close to the shape memory alloy wire, of the semiconductor chilling plate assembly, and the back fan is installed on one side, far away from the shape memory alloy wire, of the semiconductor chilling plate assembly.
9. The training device of shape memory alloy wire for knitting according to claim 8, characterized in that: the semiconductor refrigerating piece assembly comprises a cooling plate, a semiconductor refrigerating piece and a heat dissipation plate; the semiconductor refrigeration piece is respectively adhered to the cooling plate and the heat dissipation plate; the front fan is mounted on the cooling plate; the heat dissipation plate is provided with the back fan; the fan and the cooling plate are connected to a relay, and the relay is connected with a data acquisition device.
10. A method of training a shape memory alloy wire using the training apparatus of any one of claims 1 to 9, wherein: the method comprises the following process steps:
step 1), cutting a shape memory alloy wire with a proper length, and installing the shape memory alloy wire on a training device;
step 2), inputting the length of each training stretch, the temperature and the times during recovery in the upper computer control software;
step 3), connecting the programmable direct current power supply to two ends of the shape memory alloy wire but not electrifying, and installing the temperature sensor on the shape memory alloy wire;
step 4), pre-stretching, namely enabling a motor to operate to drive the sliding table, driving the nylon sliding block to move at the speed of 1mm/s through the pull rod until the reading of the tension sensor is greater than 0, and recording the initial position of the motor;
step 5), the motor continues to operate to drive the sliding table, the nylon sliding block is driven by the pull rod to move at the speed of 1mm/s, and the alloy wire is stretched to a preset length;
step 6), after the preset position is reached, the motor reversely rotates to drive the sliding table to return to the initial position;
step 7), the programmable direct current power supply outputs current under the command of the upper computer; the alloy wire is electrified, the temperature rises to reach the austenite phase transition temperature, the alloy wire contracts and drives the nylon sliding block to move back until the nylon sliding block is contacted with the sliding table;
step 8), the programmable direct-current power supply stops outputting current, the upper computer enables a relay of the cooling system to be electrified, the semiconductor cooling system starts to operate, the semiconductor refrigerating sheet assembly and the front fan as well as the back fan start to operate, cold air is blown onto the alloy wire, and the temperature of the alloy wire is reduced to the martensite phase transition temperature;
and 9) repeating the steps 5) to 8) until the preset training times are reached.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113755678A (en) * | 2021-09-18 | 2021-12-07 | 无锡东创智能材料科技有限公司 | Training device and training method for shape memory alloy wire |
| CN117107177A (en) * | 2023-08-30 | 2023-11-24 | 烟台大学 | Mechanical training method and device for realizing high strength and high hardness of Ti-V-Al-Zr memory alloy |
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| CN113755678A (en) * | 2021-09-18 | 2021-12-07 | 无锡东创智能材料科技有限公司 | Training device and training method for shape memory alloy wire |
| CN113755678B (en) * | 2021-09-18 | 2024-05-28 | 无锡东创智能材料科技有限公司 | Training device and training method for shape memory alloy wire |
| CN117107177A (en) * | 2023-08-30 | 2023-11-24 | 烟台大学 | Mechanical training method and device for realizing high strength and high hardness of Ti-V-Al-Zr memory alloy |
| CN117107177B (en) * | 2023-08-30 | 2024-04-23 | 烟台大学 | Mechanical training method and device for realizing high strength and high hardness of Ti-V-Al-Zr memory alloy |
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