KR20160031749A - Clamping device on the discharge machining electrode - Google Patents

Clamping device on the discharge machining electrode Download PDF

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Publication number
KR20160031749A
KR20160031749A KR1020140121820A KR20140121820A KR20160031749A KR 20160031749 A KR20160031749 A KR 20160031749A KR 1020140121820 A KR1020140121820 A KR 1020140121820A KR 20140121820 A KR20140121820 A KR 20140121820A KR 20160031749 A KR20160031749 A KR 20160031749A
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KR
South Korea
Prior art keywords
holder
head
fixing
electrode
ring
Prior art date
Application number
KR1020140121820A
Other languages
Korean (ko)
Inventor
구교환
Original Assignee
구교환
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 구교환 filed Critical 구교환
Priority to KR1020140121820A priority Critical patent/KR20160031749A/en
Publication of KR20160031749A publication Critical patent/KR20160031749A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The present invention is characterized in that a fixing bolt having a hemispherical head is fastened to a lower portion of a holder on which an electrode is installed and a fixing ring fixed to the machine tool is provided with a rotary ring, To a clamping device for an electric discharge machining electrode which can quickly fasten an electrode to a machine tool with a small rotation by providing a means for mounting the holder on the fastening means.
To this end, the present invention comprises a holder in which an electrode is installed and a fixing means for fixing the holder to the machine tool; A fixing bolt having a hemispherical head is fastened to a center of a bottom surface of the holder; Wherein the fixing means comprises a body on which the holder is placed, a cylindrical space portion is provided in the body, and a cylindrical rotating ring is fitted in the space portion and rotated in place; Wherein the rotary ring is provided with an opening portion in which the head portion is inserted through the head hole of the upper portion of the body and a projection portion formed on the hemispherical outer peripheral surface of the head portion is formed downward, And the head portion is hooked on the protruding portion by changing the position of the protruding portion.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a clamping device for a discharge machining electrode,

The present invention relates to a clamping device for an electrode for electric discharge machining, and more particularly to a clamping device for an electrode for electric discharge machining, more specifically, a fixing bolt having a hemispherical head is fastened to a lower portion of a holder on which an electrode is installed, And the rotating ring is provided with a means for engaging the head with the head within one rotation when the head is fitted so that the holder is mounted on the fastening means, whereby the electrode can be quickly fastened to the machine tool by a small rotation .

Generally, electric discharge machining is a special processing method for precisely machining hard materials such as cemented carbide, high speed steel and heat resistant steel. In the electric discharge machining, a workpiece is processed in a pattern shape of an electrode by a discharge phenomenon generated when an electrode having a forming pattern formed on one surface is brought into contact with a workpiece contained in an electrolytic solution. At this time, a clamping device or holder for selectively fixing the electrode to the electric discharge machining apparatus is required.

Conventional Utility Model Registration Nos. 434123 and 434124 disclose a clamping device for an electrode for electric discharge machining. This is configured such that a screw hole fixed to an electrode holder of a machining bed or an electric discharge machine of a CNC machine tool or the like and a holder provided with an electrode are provided, And a female screw portion to which the screw shaft is fastened.

However, when the holder is coupled or disassembled from the coupling port for replacing the electrode or the like, the operating knob is rotated several times. In the large-scale processing line in which a plurality of electrodes are provided, Needed a lot of time and manpower.

In view of this, in the prior arts 1116220 and 2008-0003628, a bevel gear is provided on a screw shaft of a coupling and one of the bevel gears is provided with a tool coupling groove into which an electric screwdriver is fastened, So that the clamping device can be quickly fastened and separated.

However, since a pair of orthogonal bevel gears must be mounted inside the coupling hole, the configuration is complicated and the screw shaft is rotated several times before the holder is mounted on the coupling hole.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and a method for assembling an electrode, a fixing bolt having a hemispherical head on a lower portion of the holder, The rotation ring is provided with a means for engaging the head with the head within one rotation when the head is fitted, so that the holder can be fastened to the fastening means. .

To this end, the present invention comprises a holder in which an electrode is installed and a fixing means for fixing the holder to the machine tool; A fixing bolt having a hemispherical head is fastened to a center of a bottom surface of the holder; Wherein the fixing means comprises a body on which the holder is placed, a cylindrical space portion is provided in the body, and a cylindrical rotating ring is fitted in the space portion and rotated in place; Wherein the rotary ring is provided with an opening portion in which the head portion is inserted through the head hole of the upper portion of the body and a projection portion formed on the hemispherical outer peripheral surface of the head portion is formed downward, And the head portion is hooked on the protruding portion by changing the position of the protruding portion.

According to the present invention, a rotary ring is provided inside the fixing means fastened to the machine tool. The rotary ring has a structure in which a head portion of a fixing bolt fastened to a lower portion of the holder is inserted between a pair of rotary plates which are separated from each other, and protrusions, which are caught in the head portion, are formed on opposite sides of the rotary plate, And a hemispherical head portion is sandwiched between the protrusions. The rotary ring is rotated by the rotation of less than one revolution to pull the head while the projection is rotated. In this process, the holder is fastened to the fixing means.

In an embodiment of the present invention, an electrode is fixed to the holder. When the rotary ring of the fixing means installed on the machine tool is rotated within one rotation, the holder is mounted to the fixing means. Since the holder can be quickly separated from the fixing means, the operation of fastening the plurality of electrodes to the fixing means can be simplified.

1 is an exploded perspective view of a clamping device according to an embodiment of the present invention.
2 is an assembled perspective view of a clamping device according to an embodiment of the present invention.
3 is a cross-sectional view of the assembling sequence of the clamping device of the embodiment of the present invention
4 is a sectional view taken along line A-A in Fig. 3

1 to 4, the clamping device of the embodiment of the present invention is provided with a holder 10 having an electrode seat 13 to which an electrode 15 is fastened and fixed by a bolt 14, A fixing bolt 11 having a hemispherical head 12 is fastened and fixed at the center.

The fixing means 20 for fixing the holder 10 to the machine tool is constituted by a body 21 on which the holder 10 is placed and a base 22 for fixing the body 21 to the machine tool. A space 23 is formed in the body 21 to accommodate the rotation ring 30 so that the cylindrical rotation ring 30 is embedded.

The space portion 23 is opened to the bottom of the body 21 and the bottom plate 22 is fastened to the bottom surface of the body 21 when the rotation ring 30 is fitted into the space portion 23, 30 are embedded in the body 21 so as not to fall. The space portion 23 is provided with a rotary seat 24 on both sides in a circular shape and a rotary plate 33 is provided on the rotary ring 30 so as to be separated from the rotary seat 24 and rotated.

Shaped protrusions 32 are formed to correspond to each other except for the openings 31 so that the head 12 is inserted between the rotary rings 30 so that the rotary ring 30 is rotated The hemispherical outer circumferential surface of the head 12 is restrained by the protrusions 32 while the protrusions 32 are rotated together.

A head hole 25 for guiding the head 12 to be fitted into the opening 31 of the rotary ring 30 is formed on the upper portion of the body 21 so as to communicate with the space 23 A tool hole 26 is formed in a side surface of the body 21 so as to insert and rotate a tool such as a screwdriver into a cross groove 34 formed in a rotary plate 33 of the rotary ring 30, 23). Reference numeral 27 is a guide pin formed at the upper portion of the body 21 in four directions and 16 is a pin hole formed in the bottom of the holder 10 to be inserted into the guide pin 27.

In the clamping device of the embodiment of the present invention having such a structure, the rotary ring 30 is inserted into the space 23 opened to the bottom surface of the body 21, 24 and then the base plate 22 is fastened to the bottom surface of the body 21 so that the rotary ring 30 is assembled so as to rotate without being separated from the body 21. [

The driver is inserted into the tool hole 26 and inserted into the cross groove 34 and then the rotary ring 30 is rotated so that the opening 31 is aligned with the head hole 25 of the body 21, (10) to the upper side of the body (21). At this time, the holder 10 is placed in the fixed position of the body 21 while the pin hole 16 is seated in the guide pin 27. The head 12 of the fixing bolt 11 fastened to the bottom surface of the holder 10 is inserted into the opening 31 of the rotary ring 30 through the head hole 25 in this process.

In this state, when the driver rotates within one revolution, the opening 31 is rotated and the arcuate protrusions 32 are rotated in succession. At this time, the inner surface of the protrusions 32 contacts the hemispherical outer peripheral surface of the head 12 The head 12 is pulled toward the center of the rotary ring 30 while abutting. The openings 31 are rotated toward the bottom plate 22 and the protrusions 32 are positioned above the head 12 and the head 12 is rotated. Is fixed. Therefore, the holder 10 is coupled to the body 21 of the fixing means 20 and is not separated.

Conversely, when the holder 10 is to be separated, the rotary ring 30 is rotated in the reverse order. At this time, the opening portion 31 directed toward the bottom plate 22 is retracted and coincided with the head hole 25, and the protrusion portion 32 is separated from the head portion 12, so that the holder 10 is lifted upward from the body 21 The head 12 is separated from the rotary ring 30 and the body 21 and separated.

10: Holder 11: Fixing bolt
12: Head 13: Electrode seat
14: bolt 15: electrode
20: fixing means 21: body
22: base plate 23:
24: rotating seat 25: head hole
26: tool hole 30: rotating ring
31: opening part 32:
33: spindle 34:

Claims (3)

And a fixing means for fixing the holder to the machine tool;
A fixing bolt having a hemispherical head is fastened to a center of a bottom surface of the holder;
Wherein the fixing means comprises a body on which the holder is placed, a cylindrical space portion is provided in the body, and a cylindrical rotating ring is fitted in the space portion and rotated in place;
Wherein the rotary ring is provided with an opening portion in which the head portion is inserted through the head hole of the upper portion of the body and a projection portion formed on the hemispherical outer peripheral surface of the head portion is formed downward, And the head part is hooked on the protrusion part while the position of the protrusion part is changed. The method according to claim 1,
A circular rotating seat is provided on both sides of the space portion of the body,
The rotating ring is provided with rotation plates which are inserted into the rotary seat and are rotated and guided on both sides of the rotation ring. The protrusions protrude from the opposite surfaces of the rotation plates,
Wherein the body is formed with a tool hole into which a tool can be inserted by a cross groove formed at one side of the rotary ring. 3. The method of claim 2,
The fixing means includes a base plate coupled to a bottom surface of the body,
Wherein the space formed in the body is opened to the bottom surface of the body so that the rotating ring is inserted into the space and the bottom plate is fastened to the bottom surface of the body so that the rotating ring is not separated from the body. Clamping device for working electrode.
KR1020140121820A 2014-09-15 2014-09-15 Clamping device on the discharge machining electrode KR20160031749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140121820A KR20160031749A (en) 2014-09-15 2014-09-15 Clamping device on the discharge machining electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140121820A KR20160031749A (en) 2014-09-15 2014-09-15 Clamping device on the discharge machining electrode

Publications (1)

Publication Number Publication Date
KR20160031749A true KR20160031749A (en) 2016-03-23

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Family Applications (1)

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KR1020140121820A KR20160031749A (en) 2014-09-15 2014-09-15 Clamping device on the discharge machining electrode

Country Status (1)

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KR (1) KR20160031749A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107717517A (en) * 2016-08-11 2018-02-23 苏州汉扬精密电子有限公司 Electrode quick-replaceable tool external member
CN108544391A (en) * 2018-03-16 2018-09-18 上海永茂泰汽车零部件有限公司 Grip device for electrode fabrication
CN108746906A (en) * 2018-06-28 2018-11-06 常州星宇车灯股份有限公司 A kind of tooling of auxiliary small workpiece magnetic support clamping
KR102135161B1 (en) 2019-12-17 2020-07-17 주식회사 메인텍 Torque adjustment automatic electrode fastening apparatus
CN112518060A (en) * 2020-11-26 2021-03-19 中国航空制造技术研究院 Special-shaped hole electric spark machining clamp and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107717517A (en) * 2016-08-11 2018-02-23 苏州汉扬精密电子有限公司 Electrode quick-replaceable tool external member
CN108544391A (en) * 2018-03-16 2018-09-18 上海永茂泰汽车零部件有限公司 Grip device for electrode fabrication
CN108746906A (en) * 2018-06-28 2018-11-06 常州星宇车灯股份有限公司 A kind of tooling of auxiliary small workpiece magnetic support clamping
KR102135161B1 (en) 2019-12-17 2020-07-17 주식회사 메인텍 Torque adjustment automatic electrode fastening apparatus
CN112518060A (en) * 2020-11-26 2021-03-19 中国航空制造技术研究院 Special-shaped hole electric spark machining clamp and method

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