CN110293603B

CN110293603B - Self-recovery shape memory alloy hot-melting tool bit capable of realizing trepanning processing

Info

Publication number: CN110293603B
Application number: CN201910380177.1A
Authority: CN
Inventors: 王宏宇; 翟许强; 柳苏洋; 许增; 陈�胜
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2021-07-20
Anticipated expiration: 2039-05-08
Also published as: CN110293603A

Abstract

The utility model provides a can realize self-resuming shape memory alloy hot melt tool bit of jacking processing which characterized in that: the hot-melting cutter head mainly comprises a bendable blade (1) and two side cutter bodies (2), wherein the bendable blade (1) and the two side cutter bodies (2) form a rectangular groove structure, a reserved gap is formed at the position, close to the cutter heads of the two side cutter bodies, of one end of the bendable blade (1), and a connecting rod (5) used for being connected with a heating device and a reinforcing rod (6) used for reinforcing the integral strength of the cutter heads are arranged at the positions of the cutter tails (3) of the two side cutter bodies (2).

Description

Self-recovery shape memory alloy hot-melting tool bit capable of realizing trepanning processing

Technical Field

The invention relates to a hot melting processing technology, in particular to a hot melting cutter head, and specifically relates to a self-recovery shape memory alloy hot melting cutter head capable of realizing trepanning processing.

Background

Metals, ceramics, polymers are well known as three typical types of materials in engineering. Among them, the polymer is widely used because of its comprehensive advantages of good wear resistance, light weight, strong corrosion resistance, etc. Most polymer products are molded and pultruded, however, the method can only form simple structures, and the method is indispensable to tiny and complex structures and needs subsequent processing treatment. At present, a hot-melting knife is adopted in the market to process polymer products, but the existing hot-melting knife head can only realize the cutting and surface processing of polymer materials. The three-dimensional processing technology for polymer products is not mature, and the biggest problem is that material breakage cannot be realized.

In order to solve the problems, relevant documents and patents are consulted to find that the non-stripping plastic foam insulation board grooving machine is provided, wherein a hot melting cutter is composed of a plurality of metal sheets, and waste materials in the groove are melted through heating the metal sheets. Although the cutter head can realize three-dimensional machining, the cutter head has great defects. On one hand, the hot melting knife does not adopt hot cutting to cut off materials, but utilizes high temperature to melt off redundant materials in the groove, so a large amount of harmful gas can be generated; on the other hand, the machining waste has the undesirable phenomenon of sintering the tool, resulting in severe wear of the cutting insert and even the possibility of damaging the insert.

Through the retrieval of relevant documents at home and abroad, a hot-melting cutter head capable of safely and efficiently realizing the three-dimensional processing of polymer materials is not found at present.

Disclosure of Invention

The invention aims to design a self-recovery shape memory alloy hot-melting cutter head capable of realizing trepanning processing, aiming at the problem that no hot-melting cutter head capable of finishing the three-dimensional processing of polymers exists in the current market.

The technical scheme of the invention is as follows:

the utility model provides a can realize self-resuming shape memory alloy hot melt tool bit of jacking processing which characterized in that: this hot melt tool bit mainly comprises flexible blade 1 and both sides blade 2, and flexible blade 1 forms rectangle groove structure with both sides blade 2, and 1 one end of flexible blade is close to both sides blade tool bit department and is equipped with the reservation clearance, and 3 departments of sword tail of both sides blade 2 are equipped with the stiffener 6 that is used for the connecting rod 5 that links to each other with heating device and is used for strengthening tool bit bulk strength.

The cutter head is formed by micro-punch and is tempered at the medium temperature of 450-550 ℃.

The cutter head is made of a two-way memory alloy TiNiB, and the content of B is 0.03-0.05%.

The hot working device can provide adjustable voltage of 5-24V.

The bendable blade 1 can be bent at a high temperature through memory training, can restore the original shape at a low temperature, and can keep the original shape at a high temperature at the rest part.

The length of the gap reserved at the position of the bendable blade close to the blade bodies at the two sides is 1.5 times of the depth of a groove to be processed on the polymer pipeline, and the width of the gap can be 0.025-0.05 mm.

The connecting rod 5 is a trapezoidal table.

The two inner side surfaces and/or the bottom surface of the blade body 2 are/is provided with reinforcing ribs for preventing deformation, and the reinforcing ribs can be diagonal inclined ribs or a plurality of parallel ribs or crossed ribs.

The invention has the beneficial effects that:

(1) the hot-melting cutter head can adjust the bending and the recovery of the bent blade with the two-way memory by regulating and controlling the temperature, creatively realizes the interruption of the trepanning processing, and provides a novel hot-melting trepanning processing tool for the three-dimensional formation of polymers.

(2) The hot-melting cutter head disclosed by the invention has the advantages of high machining efficiency, convenience in machining and the like.

(3) The hot-melting cutter head disclosed by the invention is suitable for various hot-working occasions and has stronger engineering adaptability.

The shape memory alloy is a smart material which can sense the change of environmental factors (heat, electricity, light, magnetism, etc.) to generate shape recovery response, and the shape recovery response can be activated intermittently in the whole recovery process, and the shape can be maintained when each response is terminated, so that the hot-melting blade has the capability of temperature-driven intelligent control and automatic chip breaking by virtue of the smart response and response maintenance characteristics of the material.

Drawings

FIG. 1 is a three-dimensional view of a hot melt cutter head of the present invention.

Fig. 2 is a three-dimensional view of a hot melt cutter head of the present invention.

Fig. 3 is a working schematic diagram of the heat-fusible cutter head of the present invention.

In the figure, 1-bending blade, 2-blade body, 3-blade tail, 4-reserved gap, 5-connecting rod and 6-reinforcing rod.

Detailed description of the preferred embodiments

The invention is further described with reference to the following drawings and examples, which are not intended to limit the invention, and those skilled in the art may make various modifications or improvements based on the basic idea of the invention, but within the scope of the invention, without departing from the basic idea of the invention.

As shown in fig. 1-3.

A self-recovery shape memory alloy hot-melting tool bit capable of realizing trepanning processing mainly comprises a bendable blade 1 and two side tool bodies 2, wherein the end face of the tool bit is in a rectangular groove (the shape is of an inverted U-shaped structure), and the tool bit is shown in figure 1. The bendable blade 1 and the blade bodies 2 on the two sides form a rectangular groove structure, a reserved gap 4 is arranged at the position, close to the blade bodies (tool bits) on the two sides, of one end of the bendable blade 1, the length L of the gap is 1.5 times of the depth of the groove, the width B of the gap can be 0.025-0.05mm, and the blade tail 3 of the blade bodies 2 on the two sides is provided with a connecting rod 5 used for being connected with a heating device and a reinforcing rod 6 used for reinforcing the overall strength of the tool bits, as shown in fig. 2. The cutter head is formed by micro-punch and adopts medium temperature tempering, and the tempering temperature is 450-550 ℃. The cutter head is made of a two-way memory alloy TiNiB, and the content of B is 0.03-0.05%. The hot working device can provide 5-24V voltage. The bendable blade 1 can be bent at a high temperature and can be restored to its original shape at a low temperature. In specific implementation, in order to improve the strength of the blade and prevent the blade from deforming at high temperature, the bendable blade 1 is subjected to memory training so that the bendable blade can be bent at high temperature and can restore the original shape at low temperature, and other parts of the blade are designed to still keep the original shape at high temperature; meanwhile, in order to ensure the high-temperature strength of the blade and prevent deformation, reinforcing ribs (not shown in the figure) for preventing deformation can be arranged on two opposite inner side surfaces and/or the bottom surface of the blade body 2, and the reinforcing ribs can be diagonal inclined ribs or a plurality of parallel ribs or crossed ribs.

The processing object of the embodiment is a key groove on the end face of a polymer oil conveying pipe. The using method is shown in fig. 3, firstly, the hot-melting tool bit is inserted into the heating device, and the voltage is adjusted, so that the temperature of the tool bit is between 140 ℃ and 200 ℃, and the bendable blade 1 is not bent at this time; secondly, after positioning, slowly inserting the hot-melting cutter head into the end face of the polymer pipe to a required depth; then adjusting the voltage of the heating device to enable the temperature of the blade to rise to about 250 ℃, and at the moment, bending the bendable blade downwards to finish the material cutting process; and finally, when the bent blade is not bent any more, slowly drawing out the cutter head, taking out the cut waste materials, and adjusting the heating device to a low gear to cool the bent blade and restore the original shape.

The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims

1. The utility model provides a can realize self-resuming shape memory alloy hot melt tool bit of jacking processing which characterized in that: the shape memory alloy hot-melting tool bit mainly comprises a bendable blade (1), a tool body (2) and a tool tail (3), wherein the end surface of the tool bit is provided with a rectangular groove; wherein, a certain gap is reserved between the bendable blade (1) and the left and right surfaces of the rectangular groove, and the cutter tail (3) is provided with a connecting rod (5) used for connecting with a heating device and a reinforcing rod (6) used for reinforcing the integral strength of the cutter head; the length L of a gap reserved at the position, close to the blade bodies at the two sides, of the bendable blade (1) is 1.5 times of the depth of the groove, and the width B of the bendable blade is 0.025-0.05 mm; inserting the hot-melting tool bit into a heating device, and adjusting the voltage to ensure that the temperature of the tool bit is between 140 ℃ and 200 ℃, and the bendable blade (1) is not bent at the moment; after positioning, slowly inserting the hot-melting cutter head into the end face of the polymer pipe to a required depth; then adjusting the voltage of the heating device to enable the temperature of the blade to rise to 250 ℃, and at the moment, bending the bendable blade (1) downwards to finish the material cutting process; when the bendable blade (1) is not bent any more, the cutter head is slowly drawn out, the cut waste is taken out, and the heating device is adjusted to a low gear, so that the bendable blade is cooled and restored to the original shape.

2. The self-recovering shape memory alloy hot-melt cutter head as claimed in claim 1, wherein the cutter head is formed by micro-punching and is tempered at a medium temperature of 450-550 ℃.

3. The self-healing shape memory alloy hot melt cutter head according to claim 1, wherein the material of the cutter head is a two-way memory alloy TiNiB, and the content of B is 0.03% -0.05%.

4. The self-healing shape memory alloy hot melt cutter head according to claim 1, wherein the heating device provides an adjustable voltage of 5-24V.

5. The self-healing shape memory alloy hot-melt tool bit according to claim 1, characterized in that the bendable blade (1) can be bent at high temperature and restored at low temperature by "memory training".

6. The self-healing shape memory alloy hot-melt cutter head according to claim 1, wherein the connecting rod (5) is a trapezoidal platform.

7. The self-recovery shape memory alloy hot-melting cutter head according to claim 1, wherein the two inner sides and/or the bottom surface of the cutter body (2) are provided with reinforcing ribs for preventing deformation.