阅读说明：本技术 一种用于加工高档皮具的精密异形刀具的生产工艺 (Production process of precise special-shaped cutter for processing high-grade leather products ) 是由 王忠平 董智韬 龙卫军 王恺 吴龙刚 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种用于加工高档皮具的精密异形刀具的生产工艺,包括以下步骤：配料；浆料制备；煅烧；粗坯热处理；粗坯料表面处理；刀形切割；表面精磨；开刃处理；涂层喷涂。本发明克服了现有精密异形刀具生产中粗胚冶炼步骤中,因此在由较高的碳含量引起的冶炼后浇注铸锭的偏析,并由此引起应力增大,同时精密异形刀具生产中原料浆粉制备步骤中原料粒径大小不一,混合不均匀,精度不好的问题。(The invention discloses a production process of a precise special-shaped cutter for processing high-grade leather, which comprises the following steps: preparing materials; preparing slurry; calcining; carrying out heat treatment on the rough blank; surface treatment of the rough blank; cutting in a knife shape; fine grinding the surface; edging; and (4) spraying the coating. The invention overcomes the problems of segregation of a cast ingot after smelting caused by higher carbon content and stress increase caused by segregation in the step of smelting a rough blank in the production of the existing precise special-shaped cutter, and the problems of different grain sizes, uneven mixing and poor precision of raw materials in the step of preparing raw material slurry powder in the production of the precise special-shaped cutter.)

1. A production process of a precise special-shaped cutter for processing high-grade leather products comprises the following steps:

s1, batching: proportioning raw materials required by cutter preparation according to a formula to prepare mixed raw materials;

s2, preparing slurry: preparing the mixed raw materials into slurry;

s3, calcining: pouring the slurry into a rough blank mold, and then carrying out calcination molding to prepare a rough blank;

s4, rough blank heat treatment: carrying out heat treatment on the rough blank to remove the carbon content in the rough blank and reduce the stress of the rough blank;

s5, surface treatment of the rough blank: grinding the surface of the product blank by using a large water mill to remove surface burrs and ensure the smoothness of the surface;

s6, cutting in a knife shape: cutting the polished rough blank into a required knife shape by using cutting equipment;

s7, surface refining: carrying out surface finish grinding and double-sided grinding on the cutter blade body;

s8, edging: sharpening and polishing the outer surface of the cutter;

s9, coating and spraying: the cutting edge of the cutter is sprayed with a wear-resistant coating, and the cutter body is sprayed with a protective coating.

2. The process for producing the precise special-shaped cutter for processing the high-grade leather products as claimed in claim 1, wherein the raw materials are added into a ball mill during the proportioning in the step 1, the ball mill is started, and the raw materials are ground under the action of a bat in the ball mill, so that the particle sizes of the raw materials are the same, and the uniformity of the raw materials during the later preparation of slurry is facilitated.

3. The process for producing a precision special-shaped cutter used for processing high-grade leather products according to claim 1, wherein during the preparation of the slurry in the second step, 99% pure alcohol, No. 58 paraffin forming agent and the powder prepared in the first step are added according to the weight ratio to prepare the slurry.

4. The production process of the precise special-shaped cutter for processing the high-grade leather products, according to the claim 3, is characterized in that the slurry is dried in a drying device after being prepared in the step three through calcination, the dried slurry is in irregular granular shape, the drying device is externally connected with an alcohol recovery device to recover alcohol for recycling, the dried granular materials are wiped and screened to be in 60-mesh powder shape, and the powder materials are subjected to punch forming into round pieces through a punching device according to the product weight and specification requirements.

5. The process for producing the precise special-shaped cutter for processing the high-grade leather products according to claim 1, wherein the calcination in the third step is carried out by heating to 1500 ℃ in a vacuum furnace and carrying out heat preservation for 3 hours.

6. The production process of the precise special-shaped cutter for processing the high-grade leather products as claimed in claim 1, wherein the rough blank heat treatment in the fourth step sequentially comprises annealing, forging and annealing, hot rolling and annealing and carburizing heat treatment on the wafer rough blank, so that the internal stress of the wafer rough blank is neutralized, and the uniform stress is ensured.

7. The production process of the precise special-shaped cutter for processing the high-grade leather according to claim 6, wherein in the annealing step, the wafer rough blank is heated to 780 ℃, is kept warm for 6 hours, is forged and annealed and then is cooled in air; carrying out three-pass folding forging on the wafer rough blank obtained in the annealing step of the wafer rough blank along the diameter direction, then heating the forged wafer rough blank to 780 ℃, preserving heat for 6 hours, and then carrying out air cooling; in the hot rolling and annealing steps, the wafer rough blank obtained in the forging and annealing steps is subjected to hot rolling, then the wafer rough blank subjected to hot rolling is heated to 780 ℃, the temperature is kept for 6 hours, and then air cooling is performed; and (3) carburizing the wafer rough blank obtained in the hot rolling and annealing steps at the temperature of 900 ℃, wherein the carbon potential is controlled during carburizing, and the carburization is complete and uniform.

8. The production process of the precise special-shaped cutter for processing the high-grade leather products according to claim 6, wherein the cutting device in the sixth step adopts a water cutting device for cutting, and the special-shaped cutter is convenient to cut by utilizing the advantage of high cutting flexibility of the water cutting device.

9. The process for producing a precision special-shaped cutter for processing high-grade leather products according to claim 6, wherein the wear-resistant coating in the ninth step is a TIC coating.

10. The production process of the precise special-shaped cutter for processing the high-grade leather products as claimed in claim 6, wherein the protective coating in the ninth step is a TiC-Al2O3-TiN coating.

Technical Field

The invention relates to the technical field of special-shaped cutters for leather products, in particular to a production process of a precise special-shaped cutter for processing high-grade leather products.

Background

Along with the improvement of people's living standard, high-grade leather products are more and more popular, produce high-grade leather products and need use accurate dysmorphism cutter, process on the leather products through accurate dysmorphism cutter, the leather sword is the leather sword of the name of another, the leather divides the cutter, it is the cutter that the manual work of being convenient for carries out the leather cutting use, it is fast to have following characteristics, there is not deckle edge, the friction is little, be difficult for haring the blade, the leather blade can divide into circular blade according to the shape, square blade is with irregularly shaped blade, mainly be applicable to the PU leather, the cutting of materials such as synthetic leather, at present, domestic leather blade is adopted to cut the leather, the effect is very good.

However, in the rough blank smelting step in the existing production of the precise special-shaped cutter, segregation of a cast ingot after smelting caused by high carbon content is caused, and stress is increased, and meanwhile, in the preparation step of the raw slurry powder in the production of the precise special-shaped cutter, the raw material particle sizes are different, the mixing is not uniform, and the precision is not good.

Therefore, a production process of a precise special-shaped cutter for processing high-grade leather products is needed, which can ensure that the preparation of raw material slurry is more uniform and the precision is better, and simultaneously, the stress influence in metal is removed by utilizing a plurality of heat treatments.

Disclosure of Invention

The invention aims to provide a production process of a precise special-shaped cutter for processing high-grade leather, aiming at solving the problems that in the step of smelting a rough blank in the production of the conventional precise special-shaped cutter, the segregation of a cast ingot after smelting is caused by higher carbon content, the stress is increased, and the raw material grain size in the step of preparing raw material slurry powder in the production of the precise special-shaped cutter is different, the mixing is not uniform and the precision is poor.

The invention is realized by the following steps: a production process of a precise special-shaped cutter for processing high-grade leather products comprises the following steps:

s1, batching: proportioning raw materials required by cutter preparation according to a formula to prepare mixed raw materials;

s2, preparing slurry: preparing the mixed raw materials into slurry;

s3, calcining: pouring the slurry into a rough blank mold, and then carrying out calcination molding to prepare a rough blank;

s4, rough blank heat treatment: carrying out heat treatment on the rough blank to remove the carbon content in the rough blank and reduce the stress of the rough blank;

s5, surface treatment of the rough blank: grinding the surface of the product blank by using a large water mill to remove surface burrs and ensure the smoothness of the surface;

s6, cutting in a knife shape: cutting the polished rough blank into a required knife shape by using cutting equipment;

s7, surface refining: carrying out surface finish grinding and double-sided grinding on the cutter blade body;

s8, edging: sharpening and polishing the outer surface of the cutter;

s9, coating and spraying: the cutting edge of the cutter is sprayed with a wear-resistant coating, and the cutter body is sprayed with a protective coating.

Further, during the material proportioning in the step 1, the raw materials are added into the ball mill, the ball mill is started, the raw materials are polished under the action of a ball bat in the ball mill, the same particle size of the raw materials is ensured, and the uniformity of the slurry during later-stage preparation is facilitated.

Further, when preparing the slurry in the second step, adding 99% purity alcohol, No. 58 paraffin forming agent and the powder prepared in the first step according to the weight ratio to prepare the slurry.

Further, in the third step, after the slurry is prepared, the slurry is transferred into a drying device for drying, the dried slurry is irregular granular, the drying device is externally connected with an alcohol recovery device for recovering alcohol for recycling, the dried granular material is wiped and sieved to form 60-mesh powder, and the powder material is subjected to punch forming into round pieces by using a punching device according to the requirements of the weight and the specification of the product.

Further, the calcination in the third step is carried out by heating to 1500 ℃ in a vacuum furnace and preserving the heat for 3 hours.

Further, the rough blank heat treatment in the fourth step sequentially carries out annealing, forging and annealing, hot rolling and annealing and carburizing heat treatment on the wafer rough blank, and neutralizes the internal stress of the wafer rough blank to ensure uniform stress.

Further, in the annealing step, the wafer rough blank is heated to 780 ℃, the temperature is kept for 6 hours, and then the wafer rough blank is forged and annealed and then air-cooled; carrying out three-pass folding forging on the wafer rough blank obtained in the annealing step of the wafer rough blank along the diameter direction, then heating the forged wafer rough blank to 780 ℃, preserving heat for 6 hours, and then carrying out air cooling; in the hot rolling and annealing steps, the wafer rough blank obtained in the forging and annealing steps is subjected to hot rolling, then the wafer rough blank subjected to hot rolling is heated to 780 ℃, the temperature is kept for 6 hours, and then air cooling is performed; and (3) carburizing the wafer rough blank obtained in the hot rolling and annealing steps at the temperature of 900 ℃, wherein the carbon potential is controlled during carburizing, and the carburization is complete and uniform.

Furthermore, the cutting equipment in the step six adopts water cutting equipment to cut, utilizes the advantage that water cutting equipment cutting flexibility is high, is convenient for cut special-shaped cutter.

Further, the wear-resistant coating in the ninth step is a TIC coating.

Further, the protective coating in the ninth step is a TiC-Al2O3-TiN coating.

Compared with the prior art, the invention has the beneficial effects that: the invention

(1) When the precise special-shaped cutter for processing the high-grade leather is prepared, in order to overcome the problem that in the step of smelting a rough blank, the cast ingot is cast after smelting due to high carbon content, and the stress is increased, the carbon content in the rough blank is removed by carrying out heat treatment on the rough blank, the stress of the rough blank is reduced, the heat treatment of the rough blank sequentially carries out annealing, forging and annealing, hot rolling, annealing and carburizing heat treatment on the wafer rough blank, the internal stress of the wafer rough blank is neutralized, the stress is ensured to be uniform, the wafer rough blank is heated to 780 ℃ in the step of annealing, is subjected to heat preservation for 6 hours, is forged and annealed, and then is subjected to air cooling; carrying out three-pass folding forging on the wafer rough blank obtained in the annealing step of the wafer rough blank along the diameter direction, then heating the forged wafer rough blank to 780 ℃, preserving heat for 6 hours, and then carrying out air cooling; in the hot rolling and annealing steps, the wafer rough blank obtained in the forging and annealing steps is subjected to hot rolling, then the wafer rough blank subjected to hot rolling is heated to 780 ℃, the temperature is kept for 6 hours, and then air cooling is performed; and (2) carburizing the wafer rough blank obtained in the hot rolling and annealing steps at the temperature of 900 ℃, controlling the carbon potential during carburizing treatment, and simultaneously enabling the carburization to be complete and uniform, so that the problems of segregation of a cast ingot after smelting caused by high carbon content and stress increase caused by the segregation in the existing rough blank smelting step are solved.

(2) When preparing the precision special-shaped cutter for processing high-grade leather products, in order to overcome the problems that the sizes of raw material particles in the step of preparing the raw material slurry powder in the production of the precision special-shaped cutter are different, the mixing is not uniform, the precision is not good, the raw materials required by the cutter preparation are proportioned according to the formula to prepare mixed raw materials, the raw materials are added into a ball mill during the batching, the ball mill is started, the raw materials are polished under the action of a ball rod in the ball mill, the particle sizes of the raw materials are ensured to be the same, the uniformity in the later preparation of slurry is convenient, and the problems that the sizes of the raw material particles in the step of preparing the raw material slurry powder in the production of the precision special-shaped cutter are different, the mixing is not uniform and the precision is not good are solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a flow chart of the production process of the precision special-shaped cutter for processing high-grade leather products.

FIG. 2 is a schematic diagram of the overall structure of the cutter in the production process of the precision special-shaped cutter for processing high-grade leather products;

FIG. 3 is a schematic view of an exploded structure of a precision special-shaped cutter used for processing high-grade leather products in the production process;

FIG. 4 is a schematic structural view of a cutter body in an embodiment of the cutter in the manufacturing process of a precision profile cutter for machining high-grade leather products;

fig. 5 is an exploded view of a tool shank assembly in an embodiment of a tool in the manufacturing process of a precision profile tool for machining high-grade leather.

In the figure: 1. a cutter body; 11. mounting grooves; 12. mounting a screw hole; 13. a set screw; 2. a knife handle assembly; 21. a bearing ring seat; 22. a bearing; 23. a rotating shaft; 24. mounting a disc; 25. fixing screw holes; 26. a first handle; 261. a slot; 262. positioning the screw hole; 27. a second handle; 271. fixing the stud; 272. and (4) a rubber sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, which illustrate a precision special-shaped cutter for processing high-grade leather, comprising a cutter body 1 and a cutter handle component 2, wherein the cutter handle component 2 is assembled and connected to one side of the cutter body 1, so that the cutter handle component 2 can be conveniently used to operate the cutter body 1 for leather slitting at the later stage.

Referring to fig. 4, the cutter body 1 is in a shape of a circular disc, a circular mounting groove 11 is formed in the middle of one side end face of the cutter body 1 and is used for being mounted at the end portion of the cutter handle assembly 2 in a later stage in a matched manner, a mounting screw hole 12 is formed in the middle of the other side end of the cutter body 1 in a penetrating manner through the mounting groove 11, and a fixing screw 13 is mounted in the mounting screw hole 12 of the cutter body 1 in a horizontal threaded manner and is used for positioning, assembling and connecting the cutter body 1 and the cutter handle assembly 2.

Referring to fig. 5, the tool holder assembly 2 includes a bearing ring seat 21, a rotating shaft 23, a mounting plate 24, a first handle 26 and a second handle 27, the rotating shaft 23 is rotatably connected in the bearing ring seat 21 through a bearing, the mounting plate 24 is fixed at an end of the rotating shaft 23, a fixing screw hole 25 is horizontally formed on a side end surface of the mounting plate 24 far away from the bearing ring seat 21, the mounting plate 24 is inserted into the mounting groove 11 of the tool body 1, the mounting plate 24 is assembled and connected with the tool body 1 through a fixing screw 13, the first handle 26 is fixed at one side of the bearing ring seat 21, a slot 261 is formed in a side end surface of the first handle 26, the side of the first handle 26 far away from the bearing ring seat 21, a plurality of positioning screw holes 262 are uniformly and horizontally formed in the slot 261 of the first handle 26, the second handle 27 is inserted in the slot 261 of the first handle 26, a fixing stud 271 is horizontally installed through the horizontal thread of one end of the second handle 27 close to the first handle 26, second handle 27 and first handle 26 pass through fixing stud 271 screw thread assembly connection, and the adjustment second handle 27 is in slot 261 of first handle 26 according to the in-service use needs of being convenient for, and the tip cover of second handle 27 is equipped with gum cover 272, improves and holds the sense, reduces the friction.

Referring to fig. 1, a process for manufacturing a precision special-shaped cutter for processing high-grade leather products includes the following steps:

s1, batching: the raw materials required by cutter preparation are proportioned according to a formula to prepare mixed raw materials, the raw materials are added into a ball mill during proportioning, the ball mill is started, and the raw materials are ground under the action of a ball bat in the ball mill, so that the same particle size of the raw materials is ensured, and the uniformity of slurry preparation in the later period is facilitated;

s2, preparing slurry: preparing the mixed raw materials into slurry, and adding 99% of purity alcohol, No. 58 paraffin forming agent and the powder prepared in the first step according to the weight ratio to prepare the slurry when preparing the slurry;

s3, calcining: pouring the slurry into a rough blank mold, then carrying out calcination molding to prepare a rough blank, calcining the rough blank in a vacuum furnace at 1500 ℃, keeping the temperature for 3 hours, drying the slurry in a drying device after the slurry is prepared, wherein the dried slurry is irregular granular, the drying device is externally connected with an alcohol recovery device to recover alcohol for recycling, the dried granular material is wiped and screened to be 60-mesh powder, and the powder material is subjected to punch forming into a round piece shape by a punching device according to the product weight and specification requirements;

s4, rough blank heat treatment: carrying out heat treatment on the rough blank, removing the carbon content in the rough blank, reducing the stress of the rough blank, carrying out annealing, forging and annealing, hot rolling, annealing and carburizing heat treatment on the wafer rough blank in sequence, neutralizing the internal stress of the wafer rough blank, ensuring uniform stress, heating the wafer rough blank to 780 ℃ in the annealing step, preserving heat for 6 hours, forging and annealing, and then carrying out air cooling; carrying out three-pass folding forging on the wafer rough blank obtained in the annealing step of the wafer rough blank along the diameter direction, then heating the forged wafer rough blank to 780 ℃, preserving heat for 6 hours, and then carrying out air cooling; in the hot rolling and annealing steps, the wafer rough blank obtained in the forging and annealing steps is subjected to hot rolling, then the wafer rough blank subjected to hot rolling is heated to 780 ℃, the temperature is kept for 6 hours, and then air cooling is performed; carburizing heat treatment, namely performing carburizing treatment on the wafer rough blank obtained in the hot rolling and annealing steps in an environment with the temperature of 900 ℃, wherein the carbon potential is controlled during the carburizing treatment, and the carburizing is complete and uniform;

s5, surface treatment of the rough blank: grinding the surface of the product blank by using a large water mill to remove surface burrs and ensure the smoothness of the surface;

s6, cutting in a knife shape: cutting the polished rough blank into a required knife shape by using cutting equipment, wherein the cutting equipment adopts water cutting equipment for cutting, and the water cutting equipment has the advantage of high cutting flexibility and is convenient for cutting a special-shaped cutter;

s7, surface refining: carrying out surface finish grinding and double-sided grinding on the cutter blade body;

s8, edging: sharpening and polishing the outer surface of the cutter;

s9, coating and spraying: and spraying a wear-resistant coating on the cutting edge of the cutter, wherein the wear-resistant coating is a TIC coating, and the protective coating is a TiC-Al2O3-TiN coating.

The device obtained by the design can basically meet the requirements of the production process of the precise special-shaped cutter for processing high-grade leather products, which can ensure that the preparation of raw material slurry is more uniform and the precision is better, and simultaneously, the stress influence in metal is removed by utilizing a plurality of heat treatments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.