KR100508498B1 - Rolling die become a screw processes and bend and it's making method - Google Patents

Abstract

The present invention relates to a rolling die and a method of manufacturing the rolling die which can be simultaneously used for bending correction and threading, and in the related art, a bending correction die and a screw die are alternately set and mounted in a rolling machine to perform bending correction and spiral machining of a body of a screw material. It was done individually, which caused excessive time due to the two dies setting process, which delayed the rolling work, and failed to process the spiral during bending correction, resulting in low productivity and low productivity.

Accordingly, in the present invention, when forming a rolling die with the bending correction die body 100 and the screw die body 200, one edge of the bending correction die body 100 in which the bending correction thread 101 is processed on one surface thereof. A portion of the screw die body 200 is formed in the same size as the screw die body 200, and the concave portion 102 is fastened to the concave portion 102 by the fastening means. 100) and the screw die body 200 are integrally combined, and the time required for setting the die in the rolling mill is less, and the bending of the screw body and the spiral machining are performed at the same time, thereby improving productivity and cost by shortening the process. Savings can be achieved.

Description

Rolling die become a screw processes and bend and it's making method

The present invention relates to a rolling die and a method for manufacturing the same, which are capable of bending correction and threading at the same time, and more specifically, to a process shortening and time savings by allowing a single rolling die to simultaneously perform screw bending correction and screw processing. The present invention relates to a rolling die and a method of manufacturing the same, which can simultaneously perform bending correction and threading, thereby improving productivity and reducing costs.

In general, when a screw wound into a forming part of a forging machine (heading machine), a screw is cut into a fixed length by moving the wire into a fixed mold and then reciprocated in front of the fixed mold. The screw material is provided with a head and a body part by a forging method that strikes the material with a mold. The screw material is then formed by screwing a spiral portion at one end of the body part in a rolling machine and completing the screw.

Here, the rolling machine for processing the spiral portion on the body of the screw material is fixed to one of the screw dies of the two screw dies, the other screw die is a structure that is installed in a reciprocating movement type, through the material supply When the screw materials are lined up in a row and supplied to the forming surface between the fixed screw dice and the moving screw dice one by one in succession, the rolling process is performed by rubbing the end of the body of the screw material into which the moving screw dice are reciprocated to process the thread. Do it.

By the way, when the length of the end (body portion) of the screw material made in the forging machine is quite long long bolts in the process of forming a long body portion by hitting the forging method, most of the bending occurs in the body portion, thus If the thread is machined at the end of the body in the rolling machine without bending the additional threaded material, this results in a defective product that cannot be screwed straight into the joint.

Therefore, in order to solve the generation of defective products due to the bending of the body portion when making the long bolt, the bending correction process first before performing the process of processing the end of the screw material for the long bolt made in the forging machine to the spiral portion in the rolling machine Was performed.

The bending correction process of the screw material is made by a bending correction dice, and the bending correction dice are mounted and operated in a rolling machine. In other words, the bending correction die is also fixed to the fixed die of the rolling machine, one of the two dies, the other is installed in the carriage to move the rubbish body by rubbing the outer peripheral surface of the body portion of the screw material which is supplied one by one in a continuous supply A bending correction process is performed to make the part straight.

That is, FIG. 1A shows a conventional bending correction die, and a bending correction thread 11 is machined on one surface at regular intervals, and the bending correction die 10 is first mounted on a conventional rolling machine to make a long bolt screw. The bending correction process (a) of FIG. 2 which performs the bending | flexion-formed body part 31 of the raw material 30 into a straight state by the said bending correction thread 11 is performed.

In addition, FIG. 1B shows a conventional screw die, in which a spiral molded surface 21 is machined on one surface, and a bending correction die 10 is used in a rolling machine to perform a rolling process with the screw die 20. After removing and replacing with the screw die 20, the rolling step (b) is performed to process the spiral portion 33 to the bent and corrected body portion 31 of the screw material 30 as shown in FIG. In the figure, reference numeral 32 is a head portion of the screw material 30.

The conventional bending correction die 10 and the screw die 20 are all provided through a material cutting process → plane, each length processing process → heat treatment process → screw processing process → shipping process of each die as shown in FIG. have.

That is, the material cutting step of cutting the die base material to a predetermined size using a cutting machine; A heat treatment process of the processed die base material after a process of processing the plane, angle, and length of the base material cut using the vertical machine; It is shipped through a threading process in which threads are machined on a plane of heat-treated die base material by a thread grinding machine.

However, in order to process the spiral portion 33 in the screw material 30 with the screw die 20 and the bending correction die 10 made as described above, first, the bending correction die 10 is set in the rolling machine and the screw material 30 A process of correcting the deflection of the body portion 31 of the blade; Since the screw die 20 is set again to the rolling mill to process the spiral part 33, the die die setting and the separation process must be repeated twice. After the bending correction rolling process is completed, there is a problem that the working time takes a long time due to the multi-step of re-supplying the screw material 30 to perform the rolling process for screw processing again.

In particular, since the bending process for threading of other products is not performed during the bending correction, the productivity of the rolling machine is significantly reduced due to various factors such as deterioration of the efficiency of the rolling machine and delay in working time, and thus, there are many problems of cost increase.

Therefore, the present invention has been developed to solve the above-mentioned conventional problems, the object of the present invention has only one rolling die, so that the bending of the body portion of the screw and the spiral machining can be performed simultaneously in one operation. Therefore, the present invention provides a rolling die and a manufacturing method capable of simultaneously performing bending correction and threading, which can improve productivity and reduce costs by saving time and shortening the process according to the setting of the die.

Hereinafter, described in detail by the accompanying drawings the technical configuration and operation of a preferred embodiment that can effectively achieve the above object of the present invention.

Figure 4 is a perspective view of the bending correction die and the screw die is a state in which the present invention is carried out, Figure 5 is a perspective view showing a state in which the bending correction die and the screw die of the present invention is coupled.

In the configuration of the present invention shown in the bending correction die body 100 is processed at a predetermined interval on one surface of the bending correction die body 100 is subjected to the bending correction of the curved body portion 301 of the screw material 300, on one surface As a screw die body 200 in which the spiral part forming surface 201 is processed, a technique of rolling the spiral part 303 at the end of the body part 301 of the screw material 300 may be known.

A characteristic of the present invention is that one side of the bending correction die body 100, in which the bending correction thread 101 of the screw is machined on the one surface at a predetermined interval, is removed in the shape of the same size as the screw die body 200. The mouth 102 is formed, and the screw die body 200 is placed on the concave portion 102 and fastened by a fastening means so that the bending correction die body 100 and the screw die body 200 are integrally coupled to each other. It features.

As the fastening means of the bending straight die body 100 and the screw die body 200, a screw hole 103 is formed on the inner surface of the recess 102 of the bending straight die body 100 by end milling and tapping. The bending dies body 100 and the screw die body 200 are formed by the fastening bolt 210 by forming a bolt insertion hole 202 corresponding to the screw hole 103 on the side of the screw die body 200. It is characterized in that it is integrally coupled, which is shown well in FIG.

In the figure, reference numeral 302 denotes a head of the screw material 300.

Hereinafter, a process of making the die of the present invention, in which the screw die body 200 and the bending correction die body 100 of the present invention are integrally coupled, will be described for each process. It is made through the process of material cutting ⇒ plane, angle, length processing ⇒ shape processing (end mill, tap processing) ⇒ heat treatment ⇒ precision processing (dimension adjustment) ⇒ screw processing ⇒ assembly ⇒ shipment.

1st process (cutting base metal for dice)

In order to make the bending correction die body 100 and the screw die body 200, each die base material is cut to a suitable size with a cutting machine to prepare the bending correction die body 100 and the screw die body 200. .

2nd process (plane, angle, length processing)

The outer surfaces of the prepared bending correction die body 100 and the screw die body 200 are machined to each plane, angle, and length.

3rd process (shape processing)

The bending correction die main body 100 forms a concave indentation portion 102 by extracting one corner portion, and forms a screw hole 103 on the inner surface of the concave portion 102 by end milling and tapping.

And a screw insertion hole 202 corresponding to the screw hole 103 is formed on the side of the screw die body 200.

4th process (heat treatment)

The shape-treated bending correction die body 100 and the screw die body 200 are heat treated to increase the surface strength.

5th process (screwing)

One surface of the heat treated bending correction die body 100 is machined with a bending correction thread 101, and one surface of the screw die body 200 is machined with a spiral forming surface 201.

6th process (precision processing)

Precision machining (finishing processing) to exactly match the squareness, plan and dimensions of the bending and bending die body 100 and the screw die body 200 machined on the one surface, so that the recessed portion of the bending correction die body 100 When the screw die body 200 is coupled to the 102, the adhesion of the contact surface becomes good.

7th process (assembly and shipment)

The screw die body 200 is fitted to the recess 102 of the completed bending correction die body 100 and fastened with a fastening bolt 210 fitted with a matched screw hole 103 and a bolt insertion hole 202. By assembling the bending correcting die body 100 and the screw die body 200 integrally with each other, the die of the present invention is completed and may be shipped afterwards.

Thus, in the present invention, the screw die body 200 is integrally assembled to one of the corner recesses 102 of the bending correcting die body 100, and one of the dies of the present invention has a fixed die of a rolling machine and When the rolling process is carried out by setting the moving dies of the carriage, the bending of the screw body 300 is performed in one step at the same time in the screw material 300 as shown in FIG.

As mentioned above, since the dies of the present invention are integrally assembled with the screw dies in one corner recess of the bending correction dies, the troublesome work of setting and mounting each die alternately for bending correction and spiral processing It can save considerable working time. Especially, the process of bending and screwing the body part of the screw is performed at the same time in one die reciprocating motion. As a result, productivity improvement by time saving and process shortening is considerable, which can result in considerable cost reduction.

1A is a perspective view of a conventional bending correction die.

1B is a perspective view of a conventional screw die

Figure 2 is a process diagram of the work of separating the conventional bending generated screw material by bending correction and spiral machining

Figure 3 is a process diagram for making a conventional bending correction die and screw die, respectively

Figure 4 is a perspective view showing the separation state of the bending and the die of the straightening dies of the present invention

Figure 5 is a perspective view showing a coupling state of the bending correction die and the screw die of the present invention

FIG. 6 is a plan view partially cut out of a state in which a bending correction die and a screw die of the present invention are coupled;

Figure 7 is a manufacturing process diagram of making a rolling die capable of simultaneous bending and threading of the present invention

8 is a process diagram showing a state of achieving the bending correction and screw processing in one step with the die of the present invention

Explanation of symbols for main parts of the drawings

100: bending correction die body 101: thread

102: recessed portion 103: screw hole

200: screw die body 201: spiral part forming surface

202: bolt insertion hole 210: fastening bolt

300: screw material 303: spiral

Claims (3)

The bending correction die body 100 in which the bending correction thread 101 is processed on one side is subjected to bending correction of the curved body part 301 of the screw material 300, and the spiral forming surface 201 is processed on one surface. In the screw die body 200 to configure a die for rolling the spiral portion 303 to the screw material 300, The concave portion 102 is formed by cutting one corner portion of the bending correction die body 100 processed on one surface thereof into the same size as that of the screw die body 200, and forming the concave portion 102. The main body 200 is fastened to the concave part 102 by the fastening means, so that the bending correction die body 100 and the screw die body 200 are integrally coupled. Rolling dice. The method of claim 1, The screw hole 103 is formed on the inner surface of the recess 102 of the bending straight die body 100 by the fastening means of the bending straight die body 100 and the screw die body 200, and is provided on the side of the screw die body 200. Matching the threaded hole 103 is formed with a bolt insertion hole 202 is inserted into the fastening bolt 210 is inserted into the bending correction die body 100 and the screw die body 200, characterized in that the bending correction Rolling dies that can be screwed simultaneously A first step of preparing the bending correcting die main body 100 and the screw die main body 200 by appropriately cutting each die base material with a cutting machine; In manufacturing the rolling die through a second process of processing the outer surface of the prepared bending correction die body 100 and the screw die body 200 to each plane, angle, length, After the second process, the bending correction die main body 100 is formed with a recessed portion 102 by extracting one corner portion to form a screw hole 103 on the inner surface, and the screw hole on the side of the screw die main body 200. A third step of forming a bolt insertion hole 202 coinciding with 103; A fourth step of heat-treating the shape-processed bending correction die body (100) and the screw die body (200); A fifth step of processing the heat treatment of the bending correction die body 100 by bending a thread for bending correction, and processing a spiral part forming surface 201 on one surface of the screw die body 200; A sixth step of precisely machining the warp and correcting die body 100 and the screw die body 200 to be exactly matched with the planarity and dimensions of the screwed die; A seventh step of assembling and shipping the screw die body 200 to the recessed part 102 of the bending correction die body 100 after the step; Method for producing a rolling die capable of simultaneously bending and screwing, characterized in that consisting of.