KR20160087607A

KR20160087607A - Tool for forming electro discharge

Info

Publication number: KR20160087607A
Application number: KR1020150006787A
Authority: KR
Inventors: 전창복; 윤태식
Original assignee: 주식회사 와이제이
Priority date: 2015-01-14
Filing date: 2015-01-14
Publication date: 2016-07-22

Abstract

The present invention relates to a forming electro-discharge machining tool. A flow path is formed in a tool body to discharge water or discharge oil from the tool body for a forming discharge process to the inner face of a process hole at a predetermined pressure. The water or discharge oil discharged through the flow path can discharge chips generated from a processed object by the forming discharge process out of the process hole. A process of picking out the tool body from the processed object for chip discharge in the course of the forming discharge process and inserting the tool body again is removed, and the forming discharge process can be continuously performed, thereby improving productivity. Particularly, the present invention relates to a forming discharge processing tool, in which a flow path is longitudinally formed to penetrate the flow path throughout the entire length of the body in forming the flow path in the tool body, to effectively remove chips therein while the water or discharge oil supplied through the flow path spurts between the tool and the process hole through the bottom face of the process hole for the forming discharge process.

Description

TOOL FOR FORMING ELECTRO DISCHARGE BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for forming electric discharge machining, and more particularly, to a tool for forming electric discharge machining, in which a flow passage is formed along a longitudinal direction of a tool, and water or discharge oil is jetted through a predetermined pressure, It is possible to discharge the chip immediately after molding discharge processing, thereby improving the efficiency of molding discharge processing.

Generally, there are three types of EDM. That is, there are a super-drill electric discharge machine in which a groove or a hole having a predetermined size is formed on an object to be machined, a wire electric discharge machine in which a wire is inserted into a hole machined by the super-drill electric discharge machine and machined into a desired shape, And a forming electric discharge machine for forming a pattern such as engraving or tapping. Patent Literature 1 to Patent Literature 3 disclose techniques for such a super-drill electric discharge machine.

Patent Literature 1 relates to an electrode exchange apparatus of a super drill electric discharge machine, and it has an electrode exchange device in a head provided with a super drill to reduce the time for exchanging electrodes, thereby improving work efficiency for workpieces of complex shapes The present invention has been made to solve the above-mentioned problems occurring in the prior art.

Patent Document 2 relates to a cooling device for a super-drill electric discharge machine, in which a cooling device is configured to be stored in a main body of a super-drill electric discharge machine so that the total volume of the super-drill electric discharge machine can be reduced. Further, the cooling device (cooling water tank) can be easily taken out from the main body in a sliding manner, thereby facilitating the maintenance of the cooling device such as replenishing of the cooling water or removal of the foreign matter to be filtered.

Patent Document 3 relates to a head structure of a super drill electric discharge machine, in which a head on which a super drill is mounted is configured to be rotatable in two axes on the left and right and front and rear, thereby overcoming the limitations on the machining direction, Which has a biaxial rotation structure that can be easily machined with respect to a head drill.

The molding electric discharge machine has almost the same structure as the above-mentioned conventional electric discharge machine, but a molding discharge tool such as a tap is used for molding discharge.

1, a machining hole H is formed in the object W with a predetermined diameter d, and a tool T is inserted into the machining hole H to form a tool T ) Surface and the inner surface of the machining hole (H) so as to perform a discharge forming process to a desired shape.

At this time, as shown in Fig. 1, the machining hole H is formed with the diameter d smaller than the diameter d 'to be actually machined. At this time, since the machining hole H is formed to be larger than the diameter D of the tool T, only the difference (d-d) between these diameters is removed through electric discharge machining to obtain a desired shape.

However, the tools used for such conventional molding discharge machining have the following problems.

(1) During the molding discharge process, since the thickness between the diameter d of the machining hole H and the diameter d 'to be machined is to be removed as shown in Fig. 1, chips are generated during the molding discharge do.

(2) Such a chip may be sandwiched between the machining hole and the tool. If the chip is caught in such a manner, there is a possibility that the machining discharge is not performed, or even if a molding discharge occurs, it may lead to defects.

(3) For this reason, the tool must be removed from the machining hole at a predetermined time interval during the molding discharge, then the chip accumulated in the machining hole must be removed, and the tool must be inserted again to perform molding discharge machining.

(4) This is because, during the molding discharge processing, the molding discharge processing and the chip removal processing are repeatedly performed, not the molding discharge processing, so that the molding discharge time becomes longer and the working efficiency due to the electric discharge processing is lowered It acts as a factor of climbing.

(5) Further, since it is not known exactly how much the chip will be caught between the processing hole and the tool, it is difficult to determine the forming discharge machining time and the chip removing time.

(6) If the period is too short to determine such a time, the chip is not properly removed, leading to defective molding discharge. On the other hand, if the cycle is unnecessarily long, the molding discharge machining time becomes long, .

Korean Registered Patent No. 1033186 (Registered on April 28, 2011) Korean Patent No. 1075503 (Registered on October 14, 2011) Korea registered patent No. 1112495 (registered on January 30, 2012)

The present invention has been made in view of this point, and it is an object of the present invention to provide a tool body for forming and discharging water or discharge oil at a predetermined pressure to an inner surface of a machining hole, The discharged water or discharge oil allows the chip formed by the molding discharge machining to be discharged from the machining object to be discharged out of the machining hole so as to remove the tool body from the machining object for discharging the chip during the machining discharge process, And to provide a tool for a molded electric discharge machining which is capable of performing molding discharge machining to increase productivity.

Particularly, in the present invention, in forming the flow path in the tool body as described above, the flow path is formed to be long through the entire length of the body, so that water or discharge oil supplied through the flow path is supplied through the bottom surface of the processing hole It is another object of the present invention to provide a tool for forming electric discharge machining which can eject chips between tools and machining holes and effectively remove chips therein.

In order to achieve the above object, the tool for molding and discharging according to the present invention comprises a body 100 formed in a predetermined shape, and is inserted into a tool hole H formed in the object W to be subjected to molding discharge machining The body (100) is characterized in that a flow path (120) is formed in the body (100) so as to discharge fluid toward the inner side of the processing hole (H).

Particularly, the channel 120 is pressurized with water or a discharge oil at a predetermined pressure so that the chip can be removed from the machined portion.

The channel 120 is formed to pass through the body 100 over its entire length.

Finally, the tool for shaping and electric discharge machining according to the present invention is characterized by being a cylindrical tapered tab having a thread 110 formed on its outer circumferential surface.

The tool for forming electric discharge machining according to the present invention has the following effects.

(1) The chip formed by the machining of the inside of the machining hole by the tool can be discharged out of the machining hole by the pressure of water or discharge oil supplied through the flow path. This prevents the chip from interfering with the molding discharge machining due to adhesion between the tool and the machining hole, thereby improving the machining efficiency in the machining discharge machining and improving the productivity.

(2) In particular, unlike the conventional molding electric discharge machine, it is not necessary to repeat the process of removing the tool from the machining hole and then reinserting it in order to remove the chip.

(3) It is also possible to remove the chips formed during the molding and discharging process through a simple structure in which a flow path is formed through a tool used in conventional molding discharge machining and water or discharge oil is supplied to the flow path.

(4) This can improve the productivity by further increasing the molding discharge effect through the additional configuration while minimizing the configuration added to the conventional molding electric discharge machine.

1 is a cross-sectional view showing a working process of a molding discharge machine using a conventional tap;
2 is a sectional view showing one example of a tool according to the present invention;
3 is a cross-sectional view showing a state in which a workpiece is tapped using a tool according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should properly define the concept of the term to describe its invention in the best possible way The present invention should be construed in accordance with the spirit and scope of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Thus, various equivalents And variations may be present.

(Configuration)

2 and 3, the tool for forming and machining electric discharge machining according to the present invention is characterized in that a flow path 120 is formed in a body 100 formed in a predetermined shape and water or discharge oil is supplied through the flow path 120 It is possible to remove chips immediately after forming discharge machining in the machining hole H, thereby improving work efficiency due to electric discharge machining.

Hereinafter, this configuration will be described in more detail as follows. Here, "W" designates an object to be processed for molding electric discharge machining, and "H" designates a processing hole for inserting a tool to perform an actual molding discharge in advance to an object to be processed.

2 and 3, the body 100 is formed in a cylindrical shape, but the present invention is not limited thereto. That is, the body 100 is preferably formed in a circular shape such as an ellipse in cross-sectional shape so as to be smoothly brought into contact with the inner surface of the processing hole H formed for forming electric discharge machining in the object W Do.

Particularly, as shown in FIGS. 2 and 3, the body 100 is provided with a flow path 120 to receive a fluid and to remove a chip formed in a machining hole H through a molding discharge process.

In the preferred embodiment of the present invention, the flow path 120 can be formed in any form as long as it can jet the fluid to the inside of the processing hole H. Of these forms, it is most preferable to form the flow path 120 through the entire length of the body 100 so that the fluid can be jetted to the other side as the fluid is supplied to either one of the flow paths 120 It is good.

As the fluid to be used for the flow path 120, it is preferable to use water or discharge oil that can be easily obtained while performing electric discharge machining.

Lastly, in the preferred embodiment of the present invention, the structure of forming the flow path 120 in the body 100 can be applied to any tool capable of forming discharge machining, but most preferably, It is most preferable to apply it to a tool used for machining.

2 and 3, a tool used for such tap forming discharge machining is formed into a cylindrical shape and a screw 110 is formed on the outer peripheral surface to form a tab in the machining hole H By forming the flow path 120 in such a tool as in the present invention, the chip can be removed by spraying water or discharge oil onto the inner surface of the processing hole H at a predetermined pressure.

Industrial Applicability As described above, according to the present invention, a flow path is formed in a tool used for forming electric discharge machining, and water or discharge oil can be ejected through the flow path. Thus, The tool can be removed while continuing the molding discharge machining without removing the tool from the mold, thereby increasing the productivity.

100: Body
110: Screw
120: Euro

Claims

A tool for machining discharge machining that includes a body (100) formed in a predetermined shape and is sandwiched by a machining hole (H) formed in an object to be machined (W)
Wherein a fluid passage (120) is formed in the body (100) so as to discharge fluid toward an inner surface of the processing hole (H).

The method according to claim 1,
Wherein the channel (120) is press-fed with water or a discharge oil at a predetermined pressure so that the chip can be removed from the machined portion.

The method according to claim 1,
Wherein the flow path (120) is formed to extend through the entire length of the body (100).

3. The method according to claim 1 or 2,
Wherein the tool for shaping and discharging machining is a tab having a cylindrical shape and a screw (110) formed on an outer circumferential surface thereof.