KR100885939B1 - Manufacturing process of cylindrical material with concave side and dies used in the manufacturing process - Google Patents

Abstract

The present invention relates to a manufacturing process of a cylindrical material having a concave side surface and a die used in the manufacturing process, the configuration of which comprises a cutting step of cutting a metal material having a circular rod shape, and a metal material that has been subjected to the cutting step. The first rounding step of rounding the sharp edges by applying a constant force and pressure to a punch having a certain size and shape from the upper direction to the lowering and fixing to the inner diameter of the die, and dies the metal material that has undergone the first rounding step. The inner part of the metal material is rotated and seated by a conveying unit for transferring and rotating the metal material. The punch having a predetermined size and shape from the upper direction to the lower side applies a constant force and pressure to round the sharp edges formed on the upper portion of the metal material. The second rounding step, and the second rounding step is carried out by fixing the metal material The first forging step in which a punch having a certain shape and size is applied to the metal material in a downward direction by applying a constant force and pressure from the upward direction to create a groove of a predetermined depth, and the repulsive force increases the constant volume of the metallic material in the upward direction and downward direction. And, in order to process the lower portion of the metal material subjected to the first forging step larger than the circumference of the body fixedly seated on the die frame coupled with the mold frame of the Roman numeral I shape, and the predetermined shape from the upper direction to the downward direction A punch having a size is applied to the center groove of the metal material by applying a constant force and pressure, and the lower part of the member is transformed into the lower shape of the Roman numeral I, and the first material step and the metal material that has undergone the first mold step. Rotate by the feeder to fix the die on the die containing the Roman numeral I mold. And a secondary mold step for deforming the lower part of the metal material into the lower shape of Roman numeral I by applying a constant force and pressure with a punch having a size, and buffering the side concave cylindrical material. Characterized in that the die used in the manufacturing process of the cylindrical material in which the member, the mold member, and the side of the die housing member is concavely dug, the material undergoing the first forging step is formed in the shape of Roman numeral I. By attaching to the die combined with the mold, the appearance of the material is processed into the shape of Roman numeral I, thereby reducing unnecessary processes, expanding unnecessary facilities, and reducing waste of manpower.

Description

        Process used in manufacturing process of resentment style site and the manufacturing process that side is gotten dug concavely}

1 is a perspective view of product molding according to a step-by-step manufacturing process of the prior art

Figure 2 is a manufacturing process of the cylindrical material in which the side is recessed in accordance with an embodiment of the present invention

3 is a cross-sectional view of the current cross-sectional view and the existing process diagram according to the process of FIG.

Figure 4 is a perspective view of the die used in the manufacturing process of the cylindrical material in which the side is concave in accordance with an embodiment of the present invention

5 is an exploded perspective view of the mold member of FIG.

6 is a perspective view in which the mold die is conveyed along the mold housing inner diameter;

7 is a step-by-step cross-sectional view of the metal material is molded in the mold mold

<Description of Symbols for Main Parts of Drawings>

S 1. Cutting step S 2. First rounding step

S 3. 2nd rounding step S 4. 1st forging step

S 5. 1st mold stage S 6. 2nd mold stage

20. Shock absorbing member 30. Mold member

40. Die housing 100. Die

The present invention relates to a manufacturing process of a cylindrical material in which the side is concave and dies used therein. More specifically, by inserting a mold mold developed in-house into an existing die, the process can be shortened and the defect rate of parts can be reduced to reduce the budget. It's about getting.

In general, when the material is to be processed using a lathe or a general machine tool, as shown in the conventional process perspective view shown in FIG. 1, the following process steps are performed, and the first rounding step is performed through the cutting step (1) of the material ( 2), the second rounding step (3), the first forging step (4), the second forging step (5), the blue hole step (6), the final process through the cutting step (7) to make the finished product.

However, in the conventional manufacturing process of the cylindrical material in which the side is concavely dug, the secondary process, which requires the addition of additional machine tools or additional manpower, is required in order to process the external shape of the final material through the blue hole step. In doing so, there was a problem in that additional facilities and additional processing tools and manpower were required.

The present invention has been proposed to solve the above-mentioned problems, the object is to mount the metal material subjected to the first forging step to the die which is combined with the mold frame made of the Roman numeral I shape to improve the appearance of the material The present invention provides a process for manufacturing cylindrically concave cylindrical materials and dies used therein, which can be processed in the shape of Roman numeral I to shorten unnecessary processes, expand unnecessary facilities, and reduce waste of manpower.

According to the present invention for achieving the above object, a manufacturing process of a cylindrical material having a concave side surface and a die used therein are a cutting step of cutting a metal material having a circular rod shape, and a metal material undergoing the cutting step. The first rounding step of rounding the sharp edges by applying a constant force and pressure to a punch having a certain size and shape from the upper direction to the lowering and fixing to the inner diameter of the die, and dies the metal material that has undergone the first rounding step. The upper and lower edges of the metal material are punched by a predetermined force and pressure from the upper direction to the lower direction by the transfer unit for transferring and rotating the metal material to the inner diameter of the upper and lower parts. The second rounding step of rounding the corners, and the metal material passed through the second rounding step dies A punch having a certain shape and size is applied to the metal material in a downward direction by applying a constant force and pressure from the upper direction to the inner diameter of the metal material to make a groove having a predetermined depth. In order to process the lower part of the first forging step that extends in the downward direction and the lower part of the metal material subjected to the first forging step to be larger than the circumference of the body, it is fixed and seated on the die mold that is combined with the die frame having the shape of Roman numeral I. A first mold step of penetrating a central flaw of the metal material by applying a constant force and pressure with a punch having a predetermined shape and size from a downward direction to a lower shape of the Roman numeral I; The metal material, which has undergone the second mold step, is rotated upside down by the conveying part and placed on the die mold including the Roman mold I mold. Immobilized complex was added to a certain force and a pressure with a punch having a predetermined shape and size in the downward direction from the upward direction is characterized in that it comprises a second mold step of modifying the lower portion of the metal material to the lower shape of the Roman numerals I.

In addition, the die used in the manufacturing process of the cylindrical material in which the side is concavely recessed according to the present invention includes a buffer member, a mold member, and a die housing member, wherein the buffer member is a cylindrical shape in which the side is recessed. Located in the lower part of the die used in the manufacturing process of the material, the configuration is composed of a bottom plate, a metal rod, a plate spring, and a cylinder portion, the bottom plate, a circular metal protrudes in the upper direction and the insertion of a metal rod in the center There is a flowable hole, the metal rod, the lower circumference is formed to be wider than the inner diameter of the central hole of the base plate to engage with the base plate and do not protrude in the upward direction, to seat the metal material and to form the inner diameter of the metal material, The plate spring is stacked on the circumference of the metal rod combined with the bottom plate to absorb and disperse the pressure and force applied in the upward direction. The cylinder part is located on the outer circumference of the disc spring coupled with the base plate and the metal rod, the cylinder part has a cylinder shape having an outer diameter and an inner diameter, and the cylinder part is dispersed in fragments due to cracking, rupture, breakage, etc. of the laminated disc spring. The mold member is located above the buffer member, and is composed of a mold housing, a mold mold, and a fixing part. The mold housing has a cylindrical outer diameter and an upper portion of the inner diameter. It has a taper shape that is wider than the inner diameter of the lower part, and the mold die has the shape of the mold housing inner diameter as an outer shape, and the mold die has a through hole through which a metal rod or a shaft can pass, and the upper portion of the hole. The end is formed with a groove inclined from the circumference to the center of the hole along the circumference of the inner diameter, and the lower end of the hole is formed at the upper end It is formed to be symmetrical to the groove, the mold frame is inserted into the inner diameter of the mold housing can be transported up and down along the shape of the inner diameter and press the metal material to form the outer shape, the fixing portion, and the upper surface of the mold housing In the form of a circular metal having an outer diameter and an inner diameter, the fixing portion serves to block the upper protrusion of the mold frame, the die housing member is composed of a case and the blocking portion, the case, the buffer member and the mold It has a cylindrical shape surrounding the outer circumference by the combination of the member, the blocking portion is a circular metal having an inner diameter and an outer diameter and coupled to the upper inner diameter end of the case, it characterized in that it prevents the upper protrusion of the inner compound.

In addition, the manufacturing process of the cylindrical material in which the side is concave and the die mold of the die used therein is composed of a mold and a spring portion, the mold is separated and separated by a number of objects, the metal mold inner diameter in the upward direction A metal material is inserted into the metal mold, and when a metal rod having a predetermined shape is applied from the upper direction to the lower side by applying a force with a certain force and pressure, the separated and separated mold mold is combined with the metal material to lower the tapered shape of the inner diameter of the mold housing. Conveyed in the direction, the conveyed metal material is compressed and deformed into the shape of the mold frame, the spring portion, the spring portion is coupled to the spaced apart, separated side of the frame, the elasticity of the frame to facilitate the coupling and separation between each other easily. Characterized in that made to include.

Hereinafter, a manufacturing process of a cylindrical material in which the side is recessed in accordance with a preferred embodiment of the present invention and dice used therein will be described in detail with reference to the accompanying drawings.

1 to 7 illustrate a manufacturing process of a cylindrical material having a concave side indented in accordance with an embodiment of the present invention and a die used therein. FIG. 1 is a perspective view of product molding according to a stepwise manufacturing process of the prior art. 2 is a manufacturing process of a cylindrical material in which the side is recessed in accordance with an embodiment of the present invention, Figure 3 is a cross-sectional view according to the present cross-sectional view and the existing process diagram according to the process of Figure 2, Figure 4 is an embodiment of the present invention Side is a perspective view of the die used in the manufacturing process of the cylindrical material recessed in the concave, Figure 5 is an exploded perspective view of the mold member of Figure 4, Figure 6 is a perspective view of the mold frame is transferred along the mold housing inner diameter 7 is a cross-sectional view illustrating each step of forming a metal material in a mold.

As shown in Figures 2 to 3, the manufacturing process of the cylindrical material in which the side is concave in accordance with an embodiment of the present invention is a cutting step (S 1), the first rounding step (S 2), and The secondary rounding step S 3, the first forging step S 4, the first mold step S 5, and the second mold step S 6 are included.

In the cutting step S 1, the upper and lower ends of the metal material 8 having a circular rod shape are cut to a predetermined size.

The first rounding step (S 2), the cutting step (S 1) is fixed to the inner diameter of the die (8) is fixed to the inner diameter of the die punch having a predetermined size and shape from the upper direction to the predetermined force and pressure The removal of sharp edges formed at both ends of the metal material 8 was carried out to round the circumferential end of the upper end.

The secondary rounding step (S 3), the first rounding step (S 2) by the transfer unit 9 for transporting and rotating the metal material (8) to the inner diameter of the die, the rotational seating The punch having a predetermined size and shape from the upper direction to the lower direction applies a certain force and pressure to remove the sharp edges formed on the upper portion of the metal material 8 and to round the circumferential end of the upper end.

In the first forging step (S 4), the metal material 8, which has undergone the second rounding step (S 3), is seated and fixed to the inner diameter of the die so that a punch having a predetermined shape and size is formed in the metal material (8). A certain force and pressure are applied from the upward direction to the downward direction to make a groove of a predetermined depth, and the repulsive force undergoes the first forging step S 4 in which the volume of the metal material 8 increases in the upward direction and the downward direction.

The first mold step (S 5), the mold frame (33) made of the shape of the Roman numeral I to process the lower portion of the metal material (8) through the first forging step (S 4) larger than the circumference of the body It is fixed to the die 100 coupled to the punching having a certain shape and size from the upper direction to the downward direction to apply a certain force and pressure to penetrate the center of the metal material 8 and the lower part of the member is Roman numeral Deform into the lower shape of I.

The secondary mold step S 6 includes a mold frame 33 formed in the shape of a Roman numeral I by rotating the metal material 8 passed through the primary mold step S 5 by the transfer part 9. The lower part of the metal material 8 is transformed into a lower part of the Roman numeral I by applying a constant force and pressure with a punch having a predetermined shape and size from the upper direction to the seat 100 and fixed to the die 100. Complete 10).

In addition, the die used in the manufacturing process of the cylindrical material in which the side is recessed in accordance with an embodiment of the present invention includes a buffer member 20, a mold member 30, and the die housing member (40).

As shown in FIG. 4, the shock absorbing member 20 is located at the lower end of the die, and its configuration is a base plate 21, a metal rod 23, a disc spring 25, and a cylinder portion 27. The bottom plate 21 is a circular metal protrudes in the upper direction and has a hole that can be inserted into the metal rod 23 in the center, the metal rod 23 is coupled to the bottom plate 21 The lower circumference is formed to be wider than the inner diameter of the central hole of the base plate so as not to protrude upward, and seats the metal material 8 and forms the lower inner diameter of the metal material 8, and the dish spring 25 is the bottom plate. Stacked on the circumferential side of the metal rod 23 combined with (21) serves to buffer and disperse the pressure and force applied in the upward direction, the cylinder portion 27 is the base plate 21 and the metal rod 23 ) Is located on the outer circumference of the disc spring 25 coupled to the cylinder 27 is a seal having an outer diameter and an inner diameter Has a better shape in the cylinder portion 27 serves to prevent dispersion caused by the breakage of the laminated disc spring, burst, fracture, such as debris.

The mold member 30 is located in the upper portion of the buffer member 20, as shown in Figure 4 is composed of a mold housing 31, a mold frame 33, a fixed portion 35, The mold housing 31 has a cylindrical outer diameter, and an upper portion of the inner diameter has a curved taper shape wider than an inner diameter of the lower portion, and the mold frame 33 is shown in FIGS. 5 to 6. The inner diameter of the housing 31 has an outer shape, and the inner diameter of the die frame 33 has a through hole through which a metal rod 23 or a shaft can penetrate, and the upper end of the hole is a groove inclined from the circumference to the center of the hole. It is formed along the circumference of the inner diameter, the lower end of the hole is formed to be symmetrical with the groove formed in the upper end and the mold frame 33 is inserted into the inner diameter of the mold housing 31 is up and down along the shape of the inner diameter Can be transferred to Forming a mold, the fixing portion 35 is coupled to the upper surface of the mold housing 31, the shape of a circular metal having an outer diameter and an inner diameter, the fixing portion 35 prevents the upper protrusion of the mold frame (33). Play a role.

The die housing member 40 is composed of a case 41 and the blocking portion 43.

The case 41 has a cylindrical shape surrounding the outer circumference by the coupling of the buffer member 20 and the mold member 30 and the blocking portion 43 is coupled to the upper inner diameter end of the case 43. It is a circular metal having an inner diameter and an outer diameter, and is characterized in that it prevents the upper protrusion of the inner couplings.

In addition, the mold frame 33 is composed of a frame 34 and a spring portion (32).

The frame 33 is coupled to the inner diameter of the mold housing 31, as shown in Figures 5 to 6, is separated and separated into a number of objects, and the metal material 8 in the inner diameter of the metal frame in the upward direction When the metal rod of a predetermined shape is inserted into the upper direction and the downward direction by applying a shock with a predetermined force and pressure, the separated mold frame 33 is coupled to the metal material 8 so that the curved surface of the inner diameter of the mold housing 31 is inserted. The metal material 8 conveyed downward along the tapered shape is compressed and deformed into the shape of the mold frame 33 and the spring portion 32 is spaced apart from and separated from the frame 34. The spring portion 32 is coupled, and its elasticity facilitates the coupling and separation between the frames.

According to an embodiment of the present invention having the configuration as described above will be described as follows the manufacturing process and the dies used for the recessed cylindrical material.

First, as shown in FIGS. 2 to 3, the punch provided in the upper part by fixing and seating the metal material 8 cut to a predetermined size through a cutting step S 1 of cutting the metal material 8 to a die inner diameter. The first rounding step (S 2) to remove the sharp surface of the furnace metal material (8) and at the same time rounding process, the metal material (8) is rotated and fixed to the inner diameter of the die by the transfer unit 9 to the top The second rounding step (S 3) is performed to remove the sharp upper surface of the metal material (8) and the rounding process with the prepared punch, and the metal material (8) having undergone the second rounding step (S 3) has an inner diameter than the die. A small depth of groove is formed by hitting the upper center of the metal material 8 with a punch having a circumference smaller than the circumference of the metal material 8 provided at the top by being fixed and seated in the small die. Length increases in the direction of Through the first mold step, the first forging step (S 4) of the metal material (8) is inserted into the die 100, the inner diameter of the die (100) combined with the mold frame 30 made of the Roman numeral I upper part of the fixed seat The first mold step of forming a through hole in the inner diameter of the metal material (8) by the punch provided in the, and is molded in the shape of the lower portion of the Roman numeral I by the shape of the mold frame 30 coupled to the lower by the blow force ( S 5) through the first mold step (S 5) of the metal material (8) is punched provided in the upper portion by rotating insertion fixed seating on the die 100 combined with the mold frame 33 by the transfer unit (9) The finished molded product 10 is shown through a secondary mold step of forming the mold mold in combination with the lower portion of the metal material 8 by hitting the furnace. Therefore, the desired shape can be easily obtained in a large amount by the mold frame 33 without going through the step of bending the side to process the side of the metal material 8.

In addition, as shown in Figure 4, the bottom plate 21, the metal rod 23, the plate spring 25 and the shock absorbing member 20 coupled to the cylinder portion 27 is located at the bottom of the die 100 A function of alleviating the impact of the punch to strike in the upper direction, the mold member 30 is coupled to the upper surface of the metal material 8 is seated, fixed, the appearance is formed, the buffer member 20 ) Is coupled to the outer circumference of the die member 30, the die housing member 40 is coupled to protect the inner assembly from external factors such as breakage of the bond bonded to the inner diameter, as shown in Figure 7, the metal material (8) It can be seen that the molding of the lower part is easy in the stepped cross-sectional view is formed in the die 100 combined with the mold frame 30 made of the Roman numeral I.

In addition, as shown in Figure 5 to 6, the mold frame 33 has a shape of the inner diameter of the mold housing 31 is a curved tapered shape, the circumference of the upper end inner diameter is wider than the circumference of the lower end inner diameter so that the metal frame is Easily transportable from the direction to the downward direction, the mold frame 33 which is coupled to the mold housing 31 inner diameter can be separated by four molds 34 and the spring portion that is the connecting medium between the molds 34 ( 32 is coupled to the side of the frame to prevent the separation of the frame 34 and the frame 43, which was coupled with the elastic force of the spring portion 32 is to be spaced again.

As described above, according to the manufacturing process of the cylindrical material in which the side is concavely dug according to the present invention and the die used therein, the metal material which has undergone the first forging step is combined with a die frame having a shape of Roman numeral I. By mounting the shape of the material to the shape of Roman numeral I, it can reduce unnecessary processes, expand unnecessary facilities, and reduce the waste of manpower.

Although the present invention has been described with reference to the embodiments shown in the accompanying drawings, it is intended to be illustrative, and those skilled in the art will understand that various modifications and equivalent embodiments are possible from this. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (3)

Cutting a metal material having a circular rod shape; A first rounding step in which a punch having a predetermined size and shape in a top direction and a downward direction is rounded to a sharp edge by seating and fixing the cut metal material on the die frame; The punching material having a predetermined size and shape from the upward direction to the downward direction is seated by rotating the metal material that has undergone the first rounding step to be turned upside down by a transfer part for transferring and rotating the metal material to the inner diameter of the die. A second rounding step of applying a pressure to round the sharp edges formed on the upper portion of the metal material; The metal material that has undergone the second rounding step is seated and fixed to the inner diameter of the die, and a punch having a predetermined shape and size is applied to the metal material by a predetermined force and pressure from the upward direction to the downward direction to make a groove of a predetermined depth, and with the repulsion force. A first forging step in which a predetermined volume of the metal material increases in an upward direction and a downward direction; In order to process the lower part of the metal material which has undergone the first forging step larger than the circumference of the body, it is fixedly seated on a die frame which is combined with a mold frame having a shape of Roman numeral I, and thus a predetermined shape and size from top to bottom are fixed. A primary mold step of applying a predetermined force and pressure to the penetrating punch to penetrate the center flaw of the metal material and deform the lower part of the member into the lower part of the Roman numeral I; The metal material that passed the first mold step is rotated upside down by the transfer part, and is seated and fixed on the die mold including the Roman die I-shaped mold frame. The punch has a predetermined shape and size from the upper direction to the lower direction. And a second mold step of deforming the lower portion of the metal material to the lower shape of the Roman numeral I by applying a predetermined force and pressure. The die coupled to the mold frame having the shape of the Roman numeral I includes a buffer member, a mold member, and a die housing member.      The buffer member is located in the lower portion of the die coupled to the mold frame made of the Roman numeral I, the configuration is composed of a base plate, a metal rod, a plate spring, a cylinder portion, The base plate has a circular metal protruding upwards and in the center there is a hole for insertion flow of a metal rod, The metal rod, the lower circumference is formed to be wider than the inner diameter of the central hole of the base plate to be coupled to the base plate and do not protrude in the upward direction, to seat the metal material and to form the inner diameter of the metal material, The plate spring is stacked on the circumference of the metal rod combined with the base plate serves to buffer and disperse the pressure and force applied in the upward direction, The cylinder portion is located on the outer circumference of the disc spring coupled with the base plate and the metal rod, the cylinder portion has a cylinder shape having an outer diameter and an inner diameter, the cylinder portion prevents the dispersion of debris due to cracking, rupture, fracture, etc. of the laminated disc spring Role, The mold member is located above the buffer member, and is composed of a mold housing, a mold mold, and a fixing part. The mold housing has a cylindrical outer diameter, and the upper portion of the inner diameter has a curved taper shape wider than the inner diameter of the lower portion. The mold die has a shape of the inner diameter of the mold housing, and the inner diameter of the mold die has a through hole through which a metal rod or a shaft can pass. The upper end of the hole is a groove inclined from the circumference to the center of the hole is formed along the circumference of the inner diameter, the lower end of the hole is formed symmetrically with the groove formed in the upper end, The mold mold is inserted into the inner diameter of the mold housing and can be transported up and down along the shape of the inner diameter and presses the metal material to form an outer shape. The fixing portion is coupled to the mold housing upper surface, and has a circular metal shape having an outer diameter and an inner diameter, the fixing portion serves to block the upper protrusion of the mold frame, The die housing member is composed of a case and the blocking portion, The case has a cylinder shape surrounding the outer periphery by the combination of the buffer member and the mold member, The blocking portion is a circular metal having an inner diameter and an outer diameter coupled to the upper inner diameter end of the case, and used for the manufacturing process of the concave-sided cylindrical material characterized in that it prevents the upper protrusion of the inner couplings. . According to claim 2, wherein the mold die is composed of a mold and a spring portion,       The frame is separated and separated into a number of objects, the metal material is inserted into the inner diameter of the metal frame in the upper direction, the metal rod of a predetermined shape in the upper direction to the downward direction by pressing the impact with a constant force and pressure, The separated mold mold is combined with the metal material to be transported downward along the curved tapered shape of the inner diameter of the mold housing, and the transferred metal material is compressed and deformed into the mold mold shape.       The spring portion is a die used in the manufacturing process of the concave side cylindrical material, characterized in that the spring portion is coupled to the spaced, separated side of the frame to facilitate the coupling and separation between the frame by its elasticity. .

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