CN111085834A - Blade production process and production line thereof - Google Patents

Abstract

The invention discloses a production process of a blade, which is characterized by comprising the following steps of: the method comprises the following steps: rolling and slitting the metal into straight strip prefabricated blanks; step two: cold rolling two side edges of the prefabricated blank to form a blade edge to obtain a cutter blank; step three: and cutting the cutter blank to obtain the blade. Through the arrangement, when the metal is rolled and coiled, a cutter blank which is cut into a single blade is not needed, and the metal is only needed to be cut into a plurality of strip-shaped prefabricated blanks, so that the required time is short, the workload is small, and the processing efficiency is high; the pre-formed blank is directly subjected to cold rolling edging, and compared with the traditional process for edging a single blade, the method saves a large amount of time and improves the production efficiency. The invention also discloses a production line adopting the production process.

Description

Blade production process and production line thereof

Technical Field

The invention relates to the technical field of blade processing, in particular to a blade production process and a blade production line.

Background

At present, chinese patent publication No. CN109338058A discloses a blade cold forging and hardening strengthening process, which is characterized by comprising the following steps: the method comprises the following steps: adopting an austenitic stainless steel material with the hardness of HV180-380 degrees, and processing the shape and the external dimension close to the shape of the blade by utilizing the processes of punching by a punch press, an oil press and the like, laser cutting and the like; step two: deburring and polishing the blade; step three: forging the cutting edge of the blade at normal temperature by using an oil press, a punch press or a press, wherein the forging pressure is increased in proportion to the thickness and the width of the blade, and the hardness of the forged blade is improved to HV420-520 ℃; step four: the blade is edged and polished by using a grinding wheel, a polishing wheel and the like.

In the processing process of the blade, the material is required to be processed into the cutter blank firstly, and then the single cutter blank is forged and polished, so that the production efficiency is low.

Disclosure of Invention

A first object of the present invention is to provide a process for producing a blade, which has the advantage of high production efficiency.

The technical purpose of the invention is realized by the following technical scheme:

a production process of a blade comprises the following steps:

the method comprises the following steps: rolling and slitting the metal into straight strip prefabricated blanks;

step two: cold rolling two side edges of the prefabricated blank to form a blade edge to obtain a cutter blank;

step three: and cutting the cutter blank to obtain the blade.

Further setting: the metal roll is an austenitic stainless steel roll.

Further setting: the thickness of the metal roll is not more than 4 mm.

Further setting: the knife blank comprises a knife body area and a knife edge area, the hardness of the knife edge area is 400-500HV, and the hardness of the knife body area is 200-390 HV.

Further setting: the cross section of the knife blank is parallelogram or trapezoid.

Further setting: and step three, drilling the cutter blank, and forming a mounting hole in the cutter blank.

By adopting the technical scheme, the metal rolling treatment does not need to cut into a cutter blank with a single blade, only needs to be divided into a plurality of strip-shaped prefabricated blanks, and has short required time, small workload and high processing efficiency; the pre-formed blank is directly subjected to cold rolling edging, and compared with the traditional process for edging a single blade, the method saves a large amount of time and improves the production efficiency.

When the blade is used, the blade can contact different complex environments, acid-base property, high and low temperature and other conditions, the austenitic stainless steel has high toughness, low brittle transition temperature, good corrosion resistance, high temperature strength and good oxidation resistance, and is suitable for manufacturing the blade in the complex environment; the austenitic steel can increase dislocation by cold rolling, improve strength and has no influence on the phase per se.

The blade raw material selects the cutting edge with the hardness of more than 400HV which can be cold rolled with the hardness of more than 200HV, and the traditional grinding and edging method needs the hardness of the raw material to meet the hardness of the cutting edge, so that the cost is high, the integral hardness difference of the material is not large, and the conditions of edge rolling, edge breaking, edge peeling and the like are easy to generate.

The hardness in sword district and the sword district is different, and the cutter body district has less hardness, and when the higher material of cutting edge contact hardness, deformation takes place at first in the cutter body district, avoids the risk of common book sword or broken edge, long service life, and the cutting edge is also difficult for damaging.

The mounting hole is used for installing the blade, directly drills on the sword base, for drilling on the blade that cuts the completion, work efficiency is high.

Another object of the present invention is to provide a blade production line for producing blades by the above process, which has the advantage of high production efficiency.

The technical purpose of the invention is realized by the following technical scheme:

a blade production line comprises a slitting machine, a cold rolling mill, a press machine and a polishing machine, wherein the slitting machine is used for slitting metal rolls into straight belt preforms, the cold rolling mill is used for cold rolling two side edges of the preforms to form cutter blanks, the press machine is used for punching mounting holes and cutting the cutter blanks to form blades, and the polishing machine is used for polishing the blades.

Further setting: the press machine comprises a feeding device and a blanking die, the feeding device sends a cutter blank to the blanking die, the blanking die comprises an upper die plate, a lower die plate, a guide pillar, a guide sleeve, a male die fixing plate and a female die fixing plate, a punching male die, a cutting male die and a pressing device are fixed on the upper die plate, the punching male die is positioned on one side of a conveyor belt far away from the cutting male die, the punching male die comprises a punching needle, the cutting male die comprises a cutting knife, the distance from the lower end of the punching needle to the lower die plate is smaller than the distance from the cutting knife to the lower die plate,

the material pressing device comprises a front material pressing mechanism, a rear material pressing mechanism and a middle material pressing mechanism, the front material pressing mechanism is located at one end, far away from the cutting male die, of the punching male die, the rear material pressing mechanism is located at one end, far away from the punching male die, of the cutting male die, the middle material pressing mechanism is located between the punching male die and the cutting male die, and the material pressing device is in contact with materials in advance of a punching needle.

The press device contacts with the knife blank earlier, compress tightly the knife blank, the knife blank takes place to remove when avoiding punching the needle and punching a hole, punching the needle and punching a hole the completion back, the cut-off knife begins to contact with the knife blank, be line contact when the cut-off knife is tailor, effort to the knife blank is great, it is difficult to press steadily to keep away from the knife blank of conveyer belt one end only to rely on pressure device, it is located punching a hole department this moment to punch the needle, it is spacing to the removal production of knife blank, thereby guarantee to cut the accuracy of position, avoid taking the knife blank to take place to remove the influence to cut the effect, rational in infrastructure, the size is accurate after the processing, and punch a hole and cut and go on in step, a.

Drawings

FIG. 1 is a schematic flow chart of a blade production process in the example;

fig. 2 is a schematic view of the structure at the blanking die of the press in embodiment 3.

In the figure, 1, a male die fixing plate; 2. fixing a female die plate; 3. punching a male die; 4. cutting a male die; 5. a material pressing device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: a production process of a blade comprises the following steps:

the method comprises the following steps: rolling and coiling the austenitic stainless steel with the thickness of 3mm and the hardness of 300-390HV on an uncoiler to form a straight strip, and cutting the straight strip through a shearing machine to obtain a strip-shaped prefabricated blank;

step two: cold rolling two side edges of the prefabricated blank through a cold rolling mill until the side edges are sharp to form a blade edge to obtain an isosceles trapezoid cutter blank, wherein the hardness of the blade edge area is not less than 450 HV;

step three: simultaneously punching and cutting the cutter blank on a press machine to obtain a blade;

step four: the blade is polished and assembled.

Example 2: a production process of a blade comprises the following steps:

the method comprises the following steps: rolling austenitic stainless steel with the thickness of 4mm and the hardness of 200-300HV on a slitting machine to be slit into straight belt prefabricated blanks;

step two: cold rolling two side edges of the prefabricated blank through a cold rolling mill until the side edges are sharp to form a knife edge, and obtaining a parallelogram knife blank, wherein the hardness of the knife edge area is not less than 400 HV;

step three: simultaneously punching and blanking the cutter blank on a press machine to obtain a blade;

step four: the blade is polished and assembled.

Example 3: a blade production line sequentially comprises a slitting machine, a shearing machine, a cold rolling machine, a press machine and a polishing machine, wherein the slitting machine is used for slitting metal rolls into straight belt prefabricated blanks, the cold rolling machine is used for cold rolling and edging two side edges of the prefabricated blanks to form cutter blanks, the press machine is used for punching mounting holes and cutting the cutter blanks to form blades, and the polishing machine is used for polishing the blades.

As shown in fig. 2, the press machine comprises a feeding device and a blanking die, the blanking die comprises an upper die plate, a lower die plate, a guide pillar, a guide sleeve, a male die fixing plate 1 and a female die fixing plate 2, a punching male die 3 is fixed on the upper die plate, a cutting male die 4 and a material pressing device 5 are arranged, the punching male die 3 is located on one side of a conveyor belt far away from the cutting male die 4, the punching male die 3 comprises a punching needle, the cutting male die 4 comprises a cutting knife, the distance from the lower end of the punching needle to the lower die plate is smaller than the distance from the cutting knife to the lower die plate, the distance difference is not smaller than 5mm, a lower female die is fixed on the female die fixing plate 2, a cutting notch is just formed in the position of the cutting knife, a blanking hole is just formed in the.

The pressing device 5 comprises a front pressing mechanism, a rear pressing mechanism and a middle pressing mechanism, the front pressing mechanism is located on the punching male die 3 and is far away from one end of the cutting male die 4, the rear pressing mechanism is located on the cutting male die 4 and is far away from one end of the punching male die 3, the middle pressing mechanism is located between the punching male die 3 and the cutting male die 4, the pressing device 5 is in contact with materials before punching a needle, the three pressing mechanisms comprise pressing plates and pressing springs, and when the punching needle is in contact with the materials, the pressing springs are in a compressed state.

During the blanking, the cope match-plate pattern whereabouts, press device 5 earlier with the contact of sword base, compress tightly the sword base, the sword base takes place to remove when avoiding punching the needle and punching a hole, it punches a hole the completion back to punch a hole, the cut-off knife begins to contact with the sword base, be line contact when the cut-off knife is tailor, effort to the sword base is great, it is stable to only lean on pressure device to be difficult to the sword base that will keep away from conveyer belt one end to press, it is located punching a hole department this moment to punch a needle, it is spacing to the removal production of sword base, thereby guarantee the accuracy of cutting the position, avoid taking the sword base to take place to remove the influence and cut the effect, and is rational in infrastructure, the processing back size.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims (8)

1. The production process of the blade is characterized by comprising the following steps:

the method comprises the following steps: rolling and slitting the metal into straight strip prefabricated blanks;

step two: cold rolling two side edges of the prefabricated blank to form a blade edge to obtain a cutter blank;

step three: and cutting the cutter blank to obtain the blade.

2. The process for producing a blade according to claim 1, wherein the metal roll is a coil of austenitic stainless steel.

3. The process for the production of blades according to claim 1 or 2, characterized in that the thickness of the metal roll is not greater than 4 mm.

4. The process for producing the insert according to claim 1 or 2, wherein the insert blank comprises an insert body region and an edge region, the hardness of the edge region is 400-500HV, and the hardness of the insert body region is 200-390 HV.

5. The process for producing a blade according to claim 1 or 2, wherein the cross section of the blade blank is a parallelogram or a trapezoid.

6. The process for producing the cutting insert as claimed in claim 1 or 2, wherein the third step is preceded by the step of drilling the cutting blank to form the mounting hole in the cutting blank.

7. A blade production line which characterized in that: the metal rolling and coiling machine comprises a slitting machine, a cold rolling machine, a press machine and a polishing machine, wherein the slitting machine is used for slitting metal rolling coils into straight belt prefabricated blanks, the cold rolling machine is used for cold rolling and edging two side edges of the prefabricated blanks to form cutter blanks, the press machine is used for punching mounting holes and cutting the cutter blanks to form blades, and the polishing machine is used for polishing the blades.

8. The blade production line of claim 7, wherein the press machine comprises a feeding device and a blanking die, the feeding device sends the blade blank to the blanking die, the blanking die comprises an upper die plate, a lower die plate, a guide post, a guide sleeve, a punch fixing plate and a die fixing plate, a punching punch, a cutting punch and a pressing device are fixed on the upper die plate, the punching punch is positioned on one side of a conveyor belt far away from the cutting punch, the punching punch comprises a punching needle, the cutting punch comprises a cutting knife, the distance from the lower end of the punching needle to the lower die plate is smaller than the distance from the cutting knife to the lower die plate,

the material pressing device comprises a front material pressing mechanism, a rear material pressing mechanism and a middle material pressing mechanism, the front material pressing mechanism is located at one end, far away from the cutting male die, of the punching male die, the rear material pressing mechanism is located at one end, far away from the punching male die, of the cutting male die, the middle material pressing mechanism is located between the punching male die and the cutting male die, and the material pressing device is in contact with materials in advance of a punching needle.

Images