Alloyed cutting tool with copper insert and method for producing same

Abstract

The present application relates to alloy cutter technical field, specifically be a kind of alloy cutter with copper sheet, including cutter body, the cutter body four around evenly distributed four tool bits, four The copper sheet is welded between tool bit and cutter body, the cutter body middle is penetrated by connecting shaft, the connecting shaft has first shaft stem and second shaft stem two parts compositions, the cutter body and the both sides of connecting shaft are equipped with locking piece, the first thread tooth is protruding on the locking piece, the locking piece one end is equipped with threaded ring, the first thread groove is set up on the threaded ring. Alloy cutter of the present application is woodworking cutter, by welding copper sheet between cutter body and tool bit, the hardness of alloy tool bit is improved, the life of cutter is improved more than 3 times, the connection of cutter body and connecting shaft is realized, the cutter is guaranteed by the limiting of locking piece and bolt to cutter body Stability, it is convenient to quickly disassemble, quickly install, so that the disassembly and installation of cutter can be quickly completed, efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of alloy cutters, in particular to an alloy cutter with copper sheets and a production process thereof. BACKGROUND

[0002] A conventional woodworking cutter is composed of a cutter body and a cutter head, the material of the cutter body is steel, and the material of the cutter head is alloy. When the cutter head is directly welded on the cutter body, the melting point of the welding rod is generally 600-1200 degrees. Since the alloy material heats up faster than the steel material, and the density and hardness of the two materials are inconsistent, different material internal forces are caused in the heating process due to the difference in material, thereby generating different pulling forces, which can easily cause the cutter head to crack or damage the internal structure of the cutter head, thereby affecting the hardness and service life of the cutter during use. SUMMARY

[0003] The present application aims to provide an alloy cutter with copper sheets and a production process thereof to solve the problems in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an alloy cutter with copper sheets, comprising a cutter body, four cutter heads are uniformly distributed around the cutter body, copper sheets are welded between the four cutter heads and the cutter body, a connecting shaft penetrates the middle of the cutter body, the connecting shaft has a first shaft and a second shaft, locking members are installed on both sides of the cutter body and the connecting shaft, the locking members have first thread teeth protruding therefrom, a threaded ring is installed at one end of the locking member, a first thread groove is formed in the threaded ring, the first thread groove is threadedly connected with the first thread teeth of the locking member, a second positioning hole is formed in the locking member, the second positioning hole is fitted with a first positioning hole on the connecting shaft, the second positioning hole and the first positioning hole are penetrated by a bolt, and are locked by a nut, a third positioning hole is formed in the symmetric side end of the locking member, the third positioning hole is fitted with a positioning hole on the cutter body, a plurality of arc-shaped grooves are formed in the cutter body and are designed in a spaced-apart manner.

[0005] As a preferred technical scheme of the present application, the following steps are included:

[0006] S1, first, select suitable steel material, cut the steel material into a cutter body of a predetermined size by a laser cutting machine, and then perform a second hollowing treatment on the cut blank cutter body;

[0007] S2, place the blank cutter body after the hollowing treatment in a vacuum furnace for quenching treatment, perform tempering after the quenching treatment, polish the surface of the blank cutter body after it cools down, remove burrs and dust from the surface of the blank cutter body, and then perform polishing treatment on the blank cutter body by a polishing device to obtain a finished cutter body;

[0008] S3, the tool head selects a hard alloy, first, the alloy material is powder metallurgy treatment, and the alloy material is ground by a pulverizer to become fine powder, then the powder is put into a mold, cold pressing forming, cold pressing forming is to put the alloy powder into the mold, and make it into shape under high pressure;

[0009] S4, the precise machining of the tool head is carried out by numerical control machine tool, the prepared CAD drawing is imported into the numerical control machine tool, the machining program of the machine is used to machine the tool head, the accurate machining of the tool head is realized, after the tool head is machined, the tool head is put into the vacuum furnace for quenching treatment, and then tempering is carried out to improve the hardness and wear resistance;

[0010] S5, finally, the tool head is ground and polished to improve the surface finish and sharpness, grinding and polishing can be carried out by hand or machine, mainly using grinding wheel or grinding material to grind the tool head until the required surface roughness and shape are reached;

[0011] S6, one side of the tool head is the cutting edge, the other side is the welding surface, the welding surface is pasted with welding powder and copper sheet, after heating, the copper sheet and the tool head welding surface are welded together by welding rod, the tool body welding point is pasted with welding powder and the tool head with copper sheet, after heating, the tool head with copper sheet is welded on the tool body by welding rod, and then the alloy tool is formed.

[0012] As a preferred technical scheme of the present application, the first shaft and the second shaft are sleeved through the sleeve ring, and are locked by the fourth positioning hole penetrating bolt.

[0013] As a preferred technical scheme of the present application, the first shaft is provided with a second thread groove, the second shaft is provided with a second thread tooth, the second shaft is threadedly connected with the first shaft through the second thread tooth and the second thread groove, and the first shaft and the second shaft are both provided with a fourth positioning hole.

[0014] As a preferred technical scheme of the present application, the tool body is made of steel, the tool head is made of one of diamond, ceramic metal and hard alloy, the thickness of the copper sheet is 0.2-0.5mm, and the copper sheet can be replaced by aluminum sheet and other heat transfer sheet.

[0015] As a preferred technical scheme of the present application, the vacuum furnace quenching temperature in step S2 is 660-750℃, and the quenching time is 30min, the vacuum furnace quenching temperature in step S4 is 850-950℃, and the quenching time is 45min.

[0016] As a preferred technical scheme of the present application, the particles of the alloy material are combined by sintering process in step S3, so that the density and strength of the alloy material can be improved.

[0017] As a preferred technical scheme of the present application, the welding in step S6 is carried out by high-frequency welding or flame welding, the welding powder is lead powder, and the welding rod is a silver welding rod.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] (1) The alloy cutter with copper sheet is provided with an alloy cutter which is a woodworking cutter. The copper sheet is welded between the cutter body and the cutter head to improve the hardness of the alloy cutter head and increase the service life of the cutter by more than 3 times.

[0020] (2) The alloy cutter with copper sheet realizes the connection of the cutter body and the connecting shaft. The locking member and the bolt limit the cutter body to ensure the stability of the cutter, facilitate quick disassembly and quick installation, and enable the disassembly and installation of the cutter to be quickly completed, thereby greatly improving the efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0022] Figure 1 is a structural schematic view of an alloy cutter with copper sheet according to an embodiment of the present application;

[0023] Figure 2 is a structural schematic view of a connecting shaft of an alloy cutter with copper sheet according to an embodiment of the present application;

[0024] Figure 3 is a structural schematic view of a connecting shaft of an alloy cutter with copper sheet according to an embodiment of the present application;

[0025] Figure 4 is a structural schematic view of a connecting shaft of an alloy cutter with copper sheet according to an embodiment of the present application;

[0026] LIST OF REFERENCE NUMERALS

[0027] 1, cutter body; 2, copper sheet; 3, cutter head; 4, arc-shaped groove; 5, connecting shaft; 6, first positioning hole; 7, locking member; 8, first threaded tooth; 9, second positioning hole; 10, third positioning hole; 11, bolt; 12, nut; 13, threaded ring; 14, first threaded groove; 15, fourth positioning hole; 16, collar member; 17, first shaft rod; 18, second shaft rod; 19, second threaded groove; 20, second threaded tooth. DETAILED DESCRIPTION

[0028] The application will be further described in conjunction with the drawings and specific embodiments:

[0029] Please refer to Figures 1-4 According to the alloy cutter with copper sheet, the cutter body 1 is provided with four cutter heads 3 uniformly distributed around the cutter body 1, and the copper sheet 2 is welded between the four cutter heads 3 and the cutter body 1. The cutter body 1 is penetrated by the connecting shaft 5 in the middle, the connecting shaft 5 is composed of the first shaft rod 17 and the second shaft rod 18, the cutter body 1 is provided with the locking piece 7 on both sides of the connecting shaft 5, the locking piece 7 is provided with the first thread tooth 8, one end of the locking piece 7 is provided with the thread ring 13, the thread ring 13 is provided with the first thread groove 14, and the first thread groove 14 is threadedly connected with the first thread tooth 8 of the locking piece 7.

[0030] The copper sheet 2 solves the problem of the cutter head 3 being cracked and the internal structure of the cutter head 3 being damaged, thereby improving the hardness of the alloy cutter head 3 and increasing the service life of the cutter by more than 3 times.

[0031] In the embodiment, the second positioning hole 9 is provided on the locking piece 7, the second positioning hole 9 is matched with the first positioning hole 6 on the connecting shaft 5, the second positioning hole 9 and the first positioning hole 6 are penetrated by the bolt 11, and the second positioning hole 9 and the first positioning hole 6 are locked by the nut 12. The third positioning hole 10 is provided on the symmetric side end of the locking piece 7, and the third positioning hole 10 is matched with the positioning hole on the cutter body 1.

[0032] The locking piece 7 and the bolt 11 are arranged to limit the cutter body 1, which not only ensures the stability of the cutter, but also meets the rigidity requirement of the cutter in high-speed rotation.

[0033] In the embodiment, the first shaft rod 17 and the second shaft rod 18 are sleeved by the sleeve ring 16, and are locked by the bolt 11 penetrating through the fourth positioning hole 15.

[0034] In the embodiment, the second thread groove 19 is provided in the first shaft rod 17, the second thread tooth 20 is protruded on the second shaft rod 18, the second shaft rod 18 is threadedly connected with the second thread groove 19 on the first shaft rod 17 through the second thread tooth 20, and the fourth positioning hole 15 is provided on the first shaft rod 17 and the second shaft rod 18.

[0035] In the embodiment, the cutter body 1 is made of steel, the cutter head 3 is made of one of diamond, ceramic metal and hard alloy, the thickness of the copper sheet 2 is 0.2-0.5 mm, and the copper sheet 2 can be replaced by an aluminum sheet and other heat transfer sheet.

[0036] In the embodiment, a plurality of arc-shaped grooves are provided on the cutter body 1 and are designed in a spaced manner.

[0037] The cutter body is designed in a spaced manner, which can effectively reduce the wind resistance.

[0038] In this embodiment, the following steps are taken:

[0039] S1. First, select the appropriate steel material, cut the steel material into the size of the set cutter body 1 by a laser cutting machine, and then perform the hollowing treatment again on the cut blank cutter body 1;

[0040] S2. Put the blank cutter body 1 after the hollowing treatment into a vacuum furnace for quenching treatment, and then perform tempering after the quenching treatment. After the blank cutter body 1 cools down, polish the surface of the blank cutter body 1, remove the burrs and dust on the surface of the blank cutter body 1, and then perform polishing treatment on the blank cutter body 1 by a polishing device to obtain the finished cutter body 1;

[0041] S3. The cutting head 3 is made of hard alloy. First, perform powder metallurgy treatment on the alloy material, and then grind the alloy material by a pulverizer to make it into fine powder. Then, put the powder into a mold for cold pressing forming. The cold pressing forming is performed by putting the alloy powder into the mold and making it form under high pressure.

[0042] S4. Perform precise machining of the cutting head by a numerical control machine tool. Import the CAD drawing obtained into the numerical control machine tool, and then perform machining of the cutting head 3 by the machining program of the machine tool to realize precise machining of the cutting head 3. After the machining of the cutting head 3 is completed, put the cutting head 3 into a vacuum furnace for quenching treatment, and then perform tempering after the quenching treatment to improve the hardness and wear resistance of the cutting head 3.

[0043] S5. Finally, perform grinding and polishing on the cutting head 3 to improve the surface smoothness and sharpness of the cutting head 3. The grinding and polishing can be performed by hand or by machine. Mainly, the grinding and polishing are performed by using a grinding wheel or grinding material to grind the cutting head until the required surface roughness and shape are achieved.

[0044] S6. One side of the cutting head 3 is the cutting edge, and the other side is the welding surface. The welding surface is pasted with welding powder and copper sheet 2. After heating, the copper sheet 2 is welded to the welding surface of the cutting head 3 by a welding rod. The welding point of the cutter body 1 is pasted with welding powder and the cutting head 3 with the copper sheet welded thereon. After heating, the cutting head 3 with the copper sheet welded thereon is welded to the cutter body 1 by a welding rod, thereby forming an alloy cutting tool.

[0045] In this embodiment, the vacuum furnace quenching temperature in step S2 is 660-750℃, and the quenching time is 30min. The vacuum furnace quenching temperature in step S4 is 850-950℃, and the quenching time is 45min.

[0046] In this embodiment, the particles of the alloy material are combined by the sintering process in step S3, which can improve the density and strength of the alloy material.

[0047] In this embodiment, the welding in step S6 is performed by high-frequency welding or flame welding, and the welding powder is lead powder, and the welding rod is a silver welding rod.

[0048] In specific application, the alloy cutter is a woodworking cutter, the copper sheet 2 is welded between the cutter body 1 and the cutter head 3, the problem of the cutter head 3 being pulled and cracked and the internal structure of the cutter head 3 being damaged is solved, the hardness of the alloy cutter head 3 is improved, the service life of the cutter is improved by more than 3 times, the cutter body 1 and the connecting shaft 5 are connected, the cutter body 1 is limited by the locking piece 7 and the bolt 11, the stability of the cutter is ensured, the rigidity requirement of the cutter in high-speed rotation is met, the cutter body 1 and the connecting shaft 5 are convenient to disassemble and replace, the cutter is convenient and rapid to replace, the cutter head 3 is improved in hardness, and the cutter is convenient and rapid to disassemble and assemble, the disassembly and assembly of the cutter can be rapidly completed, and the efficiency is greatly improved.

[0049] In the description of the present application, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An alloy cutting tool with a copper sheet, characterized in that, The device includes a blade body (1), which has four blade heads (3) evenly distributed around its perimeter. A copper sheet (2) is welded between the four blade heads (3) and the blade body (1). A connecting shaft (5) passes through the middle of the blade body (1). The connecting shaft (5) consists of a first shaft (17) and a second shaft (18). Locking components (7) are installed on both sides of the blade body (1) and the connecting shaft (5). The locking components (7) have a first threaded tooth (8) protruding on them. A threaded ring (13) is installed at one end of the locking components (7). The threaded ring (13) has a first threaded groove (14). The first threaded groove (14) is threadedly connected to the first threaded tooth (8) on the locking member (7). The locking member (7) is provided with a second positioning hole (9). The second positioning hole (9) fits into the first positioning hole (6) on the connecting shaft (5). The second positioning hole (9) and the first positioning hole (6) are connected by a bolt (11) and locked by a nut (12). The locking member (7) is provided with a third positioning hole (10) on its symmetrical side end. The third positioning hole (10) fits into the positioning hole on the blade body (1). The blade body (1) is provided with multiple sets of arc-shaped grooves and has a hollow design. A manufacturing process for an alloy cutting tool with copper sheets includes the following steps: S1. First, select suitable steel and cut it into the size of the set blade (1) using a laser cutting machine. Then, hollow out the cut blank blade (1) again. S2. The blank blade (1) after the hollowing process is placed in a vacuum furnace for quenching. After quenching, it is tempered. After the blank blade (1) cools down, its surface is polished to remove the burrs and dust from the surface of the blank blade (1). Then, the blank blade (1) is polished by a polishing device to obtain the finished blade (1). S3, the cutter head (3) is made of cemented carbide. First, the alloy material is subjected to powder metallurgy treatment and then the alloy material is ground by a pulverizer to make it into fine powder. Then the powder is put into a mold and cold-pressed. Cold pressing is to put the alloy powder into the mold and shape it under high pressure. S4. Precision machining of the cutting head is carried out by CNC machine tool. The CAD drawing is imported into the CNC machine tool and the cutting head (3) is machined by the machine's machining program to achieve precise machining of the cutting head (3). After the cutting head (3) is machined, the cutting head (3) is placed in a vacuum furnace for quenching treatment. After quenching treatment, tempering is carried out to improve its hardness and wear resistance. S5. Finally, grind and polish the cutter head (3) to improve its surface smoothness and sharpness. Grinding and polishing can be done manually or mechanically, mainly by using a grinding wheel or abrasive material to grind the cutter head until the required surface roughness and shape are achieved. S6. One side of the cutting head (3) is the cutting edge, and the other side is the welding surface. The welding surface is coated with welding powder and a copper sheet (2) is attached. After heating, the copper sheet (2) is welded to the welding surface of the cutting head (3) by welding rod. The welding point of the cutting body (1) is coated with welding powder and attached to the cutting head (3) with the copper sheet. After heating, the cutting head (3) with the copper sheet is welded to the cutting body (1) by welding rod, thus forming an alloy cutting tool.

2. The alloy cutting tool with copper sheet according to claim 1, characterized in that, The first shaft (17) and the second shaft (18) are connected by a collar (16) and locked by a bolt (11) passing through the fourth positioning hole (15).

3. The alloy cutting tool with copper sheet according to claim 1, characterized in that, The first shaft (17) has a second threaded groove (19) inside, and the second shaft (18) has a second threaded tooth (20) protruding on it. The second shaft (18) is threadedly connected to the second threaded groove (19) on the first shaft (17) through the second threaded tooth (20). The first shaft (17) and the second shaft (18) both have a fourth positioning hole (15).

4. The alloy cutting tool with copper sheet according to claim 1, characterized in that, The blade body (1) is made of steel, the blade tip (3) is made of one of diamond, ceramic metal and hard alloy, the copper sheet (2) has a thickness of 0.2-0.5mm, and the copper sheet (2) can be replaced with aluminum sheet and other heat transfer sheets.

5. The manufacturing process for an alloy cutting tool with copper sheet according to claim 1, characterized in that, The vacuum furnace quenching temperature in step S2 is 660-750℃ and the quenching time is 30 min. The vacuum furnace quenching temperature in step S4 is 850-950℃ and the quenching time is 45 min.

6. The manufacturing process for an alloy cutting tool with copper sheet according to claim 1, characterized in that, In step S3, the alloy material particles are bonded together through a sintering process, which can improve the density and strength of the alloy material.

7. The manufacturing process for an alloy cutting tool with copper sheet according to claim 1, characterized in that, In step S6, the welding is performed by high-frequency welding or flame welding, the welding powder is lead powder, and the welding rod is silver welding rod.

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