KR101782989B1 - A bolt tightening apparatus and method for tightening die for electirically assisted manufacturing and parts thereof - Google Patents

A bolt tightening apparatus and method for tightening die for electirically assisted manufacturing and parts thereof Download PDF

Info

Publication number
KR101782989B1
KR101782989B1 KR1020150076658A KR20150076658A KR101782989B1 KR 101782989 B1 KR101782989 B1 KR 101782989B1 KR 1020150076658 A KR1020150076658 A KR 1020150076658A KR 20150076658 A KR20150076658 A KR 20150076658A KR 101782989 B1 KR101782989 B1 KR 101782989B1
Authority
KR
South Korea
Prior art keywords
bolt
unit
power supply
mold
bolt fastening
Prior art date
Application number
KR1020150076658A
Other languages
Korean (ko)
Other versions
KR20160140257A (en
Inventor
이태규
김장수
양대호
엄원익
Original Assignee
주식회사 엠에스 오토텍
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 주식회사 엠에스 오토텍 filed Critical 주식회사 엠에스 오토텍
Priority to KR1020150076658A priority Critical patent/KR101782989B1/en
Publication of KR20160140257A publication Critical patent/KR20160140257A/en
Application granted granted Critical
Publication of KR101782989B1 publication Critical patent/KR101782989B1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/58—Jaw attachments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1425—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by electrical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a metal mold for conducting an electric current by applying a current to a metal mold, and a metal mold and a bolt fastening apparatus for a part to be coupled to a metal mold, A bolt wrench portion, a handle portion for transmitting torque to the vox wrench portion by rotation, a first energizing portion energized with the bolt, a second energizing portion energized with the mold or the part, And the power supply unit is connected to the second power supply unit and supplies power to the first power supply unit and the second power supply unit, so that it is possible to confirm whether or not the current leakage to the bolt side occurs simultaneously with the bolt tightening process .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt fastening apparatus and a method for fastening a bolt between a mold and a bolt,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for fastening a bolt between a metal mold for a conductive mold and a component and more particularly to a metal mold for applying an electric current to a workpiece, And more particularly, to a bolt fastening apparatus and method for a metal mold for an electric connection and a component.

Recently, Electrically Assisted Manufacturing (EAM) technology has been developed in order to secure sufficient rigidity while focusing on weight reduction for improving fuel efficiency in a variety of technical fields including the automobile industry. This is because of electroplasticity, .

In this case, the conduction firing means that the flow stress inside the metal material temporarily drops when the current is applied during the plastic deformation of the metal material, and the plastic working can be performed even with a smaller force. It has been confirmed that when a predetermined current is applied as an experimental optimum energizing variable, the moldability is remarkably improved in a state in which an excessive temperature rise is not accompanied.

On the other hand, energization heat is a resistance heating phenomenon caused by current flow when a current is applied to a machining portion of a metal material, and is studied as a part of a current forming technique for overcoming the temporal and spatial limitations of the existing hot stamping technique have.

It is presupposed that such a current-carrying molding technique using current-carrying firing or current-carrying heat generation is performed by a current-carrying mold for applying a current to a material. In this case, the current-carrying mold has a trim for shearing one side of the material, It is general that various mechanical devices (hereinafter, referred to as parts) of the metal material are used by bolting in accordance with the purpose of bending, such as bending.

At this time, there has been an attempt to fasten a metal mold for a thermoforming mold and a part coupled to the metal mold with an insulating material, for example, a ceramic bolt, so that current does not leak to the bolt side due to energization. However, since the ceramic bolt has high brittleness, it has a problem of causing a safety accident due to breakage during the fastening.

In this connection, Korean Patent Laid-Open Publication No. 10-2010-0123291 (Patent Document 1) has been disclosed as a prior art related to a bolt fastening device for a mold and a component. Patent Document 1 discloses a technique relating to a T-type wrench that can be used for bolt fastening, in particular, for varying the length when assembling a metal mold machine.

However, in the conventional various wrenches including Patent Document 1, after the metal parts for the conductive mold and the parts to be coupled to the metal mold are fastened by the insulated bolts, the insulating coating layer of the bolts is damaged during the fastening process, There is a problem in that it is necessary to individually measure whether or not it is possible.

In addition, by individually confirming whether or not the current of each bolt is leaked, there is a problem that the time and cost of the production process of the electrified molded product eventually become uncomfortable.

In addition, there is a problem that a separate device for measuring the leakage of current is required.

Korean Patent Publication No. 10-2010-0123291

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a metal mold for conductive mold and a metal mold for inserting a part to be coupled to the metal mold with an insulated bolt, And a bolt fastening device for a component.

It is also an object of the present invention to provide a bolt fastening device for a conductive mold and a bolt fastening device, which does not need to individually check whether or not each bolt current is leaked, and which ultimately makes it possible to economize the time and cost in the production process of the current-

Another object of the present invention is to provide a bolt fastening device for a component with a conductive mold and a bolt fastening device for components, which do not require a separate device for measuring the leakage of current.

The bolt fastening device for the conductive mold and the bolt fastening device according to the embodiment of the present invention is characterized in that a metal mold for conductivity for applying a current to a workpiece and a metal mold for a conductive mold for fastening a component coupled to the metal mold with an insulated bolt, A bolt fastening device comprising: a bolt wrench portion into which a head of a bolt is inserted, a handle portion that transmits torque to a vox wrench portion by rotation, a first power supply portion provided to be energized with a bolt, And a power supply unit connected to the first power supply unit and the second power supply unit, and the power supply unit supplies power to the first power supply unit and the second power supply unit.

In this case, the first power supply unit includes a first power supply unit for electrically connecting the power supply unit to a portion where the knob portion and the box wrench unit are in contact, and a second power supply unit for electrically connecting the first power supply unit, And a second energizing unit that energizes the second energizing unit.

The second power supply unit may include a third power supply unit for electrically connecting the mold or the component to the handle, and a fourth power supply unit for electrically connecting the third power supply unit to the power supply unit.

In addition, the first conductive unit or the second conductive unit may be formed of at least one electric wire.

On the other hand, it is preferable that the first energizing unit and the fourth energizing unit are embedded in the handle.

It is preferable that the second energizing unit is embedded in the inside of the box wrench portion.

On the other hand, the third energizing unit includes a plurality of arms that are coupled to one side of the handle and are foldably foldable, and a probe of a metal material provided on the arm of the best one of the plurality of arms so as to be able to contact the mold or the component .

In this case, the third energizing unit may further comprise an electric wire provided on the plurality of arms so as to electrically connect the probe and the fourth energizing unit.

It is preferable that the power supply unit is embedded in the handle.

Meanwhile, the bolt fastening device for the conductive mold and the component according to the embodiment of the present invention may further comprise an insulating part interposed between the bolt wrench part and the mold or part to block electrical connection.

In this case, it is preferable that the insulating portion is provided on the bottom surface of the Vauxhall wrench portion.

It is also preferable that the insulating portion is formed in the same ring shape as the bottom surface of the Vauxhall wrench portion.

Meanwhile, the bolt fastening apparatus for the conductive mold and the component according to the embodiment of the present invention may further include an output unit for warning the current leakage when the body of the bolt and the mold or the part are energized.

In this case, it is preferable that the output unit is provided on one side of the handle.

In addition, the output unit preferably comprises a buzzer or a lamp.

Meanwhile, the bolt fastening apparatus for a conductive mold and the component according to the embodiment of the present invention may further include a switch unit provided on the first power supply unit or the second power supply unit and adapted to apply or cut off the power supply from the power supply unit have.

The bolt fastening method of the metal mold for the conductive mold and the bolt fastening method of the part according to the embodiment of the present invention is a bolt fastening method of a metal mold and a part for energizing mold for fastening the metal mold and a part with bolts, A step S20 of inserting the bolt into the mold and the part and applying a torque to the bolt with the bolt wrench part, a step S30 of measuring an electric conductivity of the part during the step S20, A step S40 of comparing the degree of conduction of the component with a preset value, and S50 of stopping the torque transmission of the Vauxhall wrench part when the degree of conduction of the component is equal to or higher than a predetermined value in step S40.

The present invention may further include the step S60 of continuing the torque transmission of the Vauxhall wrench section when the degree of conduction of the component is less than a predetermined value in step S40.

As described above, in the bolt fastening apparatus for the conductive mold and the component according to the present invention, it is possible to confirm whether or not the current leakage to the bolt side is simultaneous with the process of fastening the conductive mold and the component coupled to the mold with the insulated bolt Let's do it.

In addition, the bolt fastening device for the conductive mold and the component according to the present invention does not need to individually check whether or not the current leakage of each bolt is separately performed, thereby making it possible to economize the time and cost in the production process of the current-

In addition, a bolt fastening device for a conductive mold and a component according to the present invention does not require a separate device for measuring the leakage of current, thereby reducing the cost of the assembly.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a configuration diagram of a bolt fastening device for a metal mold for a conductive mold and a component according to the present invention; FIG.
Fig. 2 is a cross-sectional view of a bolt fastening device for a metal mold for a conductive mold and a component according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view illustrating another operation state of the bolt fastening device of the component for the conductive mold shown in Fig. 2 and the component.
Fig. 4 is a flowchart showing a bolt fastening method of a part for a conductive mold and a part according to the present invention.

The accompanying drawings in the present invention may be exaggerated for clarity, clarity, and descriptive convenience. In addition, since the following terms are defined in consideration of the functions of the present invention, they may vary depending on the intention or custom of the user or the operator, and therefore the definition of these terms should be based on the technical contents throughout this specification will be. On the contrary, the embodiments are merely illustrative of the constituent elements set forth in the claims of the present invention and do not limit the scope of the present invention, and the scope of the rights should be interpreted on the basis of technical ideas throughout the specification of the present invention .

2 is a cross-sectional view of a bolt fastening apparatus for a metal mold and a component for energization according to an embodiment of the present invention, and Fig. 3 is a cross-sectional view of the bolt fastening apparatus 2 is a cross-sectional view showing another operation state of the bolt fastening device of the component and the metal mold for conductivity shown in Fig.

As described above, the metal mold for electrification machining apparatus according to the embodiment of the present invention includes a metal mold for conducting an electric current by applying a current to a material and a metal mold for engaging a part coupled to the metal mold with an insulated bolt To a bolt fastening device for a component.

1 to 3, a metal mold for energizing mold according to the present invention and a bolt fastening device for a part according to the present invention. The metal mold for energization machining apparatus according to the present invention comprises a vox wrench 10, a handle 20, (30), a second power supply unit (40), and a power supply unit (50).

The bolt wrench portion 10 is a component having a bolt insertion groove 10a into which a head of a bolt 3 made of a metal material is inserted. In addition, a knob insertion groove 10b is formed on the other side of the knob wrench 10 for fitting the knob 20 described later.

The buckle wrench 10 can be integrally formed with the handle 20 and can be formed of a plurality of detachable buckles so that the buckle wrench 10 can be worn when bolts 3 of various sizes are fastened. Of course.

The knob 20 is a component that transmits torque to the knob wrench 10 by rotation.

The handle 20 may be provided with an insertion protrusion 20a that can be inserted into the handle insertion groove 10b of the knob wrench 10. [ In this case, in the relationship between the insertion protrusion 20a and the knob insertion groove 10b, the protrusion may be provided in the knob wrench 10 by a simple design change, and the insertion groove may be provided in the knob 20 Of course.

The first power transmission unit 30 is electrically connected to the bolts 3 with a conductive material.

In this case, if the bolt 3 is entirely insulated and coated as shown in FIGS. 2 to 3, it is necessary to peel off a part of the coating. However, the insulating coating layer 4 is formed only on the body 3b of the bolt 3 The head 3a of the bolt 3 and the first power supply unit 30 are brought into contact with each other.

At this time, the first power transmission unit 30 is designed to detachably attach the wax wrench unit 10 to the portion where the handle 20 and the wrench wrench unit 10 contact each other from the power source unit 50 to be described later A first energizing unit 31 for electrically connecting the first energizing unit 31 and the second energizing unit 31 electrically connecting the first energizing unit 31 to the portion where the head 3 a of the bolt 3 contacts, (32).

In addition, the first electrification unit 31 and the second electrification unit may be made of a conductive material, and may be formed of wires whose respective end portions are peeled off for convenience of installation.

For example, the first energizing unit 31 may be configured such that one end of the electric wire is connected to one electrode of the power source unit 50 and the other end is positioned at a portion where the handle 20 and the wrench wrench 10 contact each other And the other end of the second energizing unit 32 contacts the other end of the first energizing unit 31 at the time of assembling the box wrench unit 10 and the other end of the bolt 3 is inserted into the box wrench unit 10, (3a) of the head (3).

The first energizing unit 31 is preferably embedded in the handle 20 for the convenience of use of the handle 20 and the second energizing unit 32 is preferably embedded in the handle 20, It is preferable to be embedded in the inside.

The second conductive part 40 is provided so as to be electrically conductive with the metal mold 2 or the component 1 with a conductive material.

In this case, since the second conductive part 40 is provided with the insulating layer 2a on the surface of the metal mold 2 in order to prevent current from leaking from the metal mold 2 to the component 1 side during the current injection molding, It is necessary to be constructed so as to be able to inspect both parts 1 and 2 of both the parts of the mold 4 for damages and the third energizing unit 41 and the fourth energizing unit 42 have.

That is, the second power supply unit 40 includes a third power supply unit 41 for electrically connecting the metal mold 2 or the component 1 to the handle 20, and a third power supply unit 41, (Not shown).

In this case, the third energizing unit 41 and the fourth energizing unit 42, like the first energizing unit 31 and the second energizing unit 32, can be made of a conductive material, In order to achieve this, it is possible to use a stripped wire at each end.

That is, the third energizing unit 41 is configured such that one end of the electric wire is in contact with the mold 2 or the component 1 and the other end is connected with one end of the electric wire constituting the fourth energizing unit 42, The other end of the fourth energizing unit 42 may be connected to the other electrode of the power source unit 50.

In this case, it is preferable that the fourth energizing unit 42 be embedded in the handle 20 for convenience of use of the handle 20.

The third energizing unit 41 may be constituted by an electric wire and may be provided on one side of the handle 20 for effective contact with the mold 2 or the component 1 as shown in Figs. A plurality of arms 41a which are coupled to each other so as to be foldable by the tiltable member 41b and an arm 41a which is the most distal one of the plurality of arms 41a so as to be able to contact the metal mold 2 or the component 1. [ And a probe 41c made of a metal material.

Although the third energizing unit 41 is not shown, since the energizing effect may be insufficient when the arm 41a is made of a metal material, the fourth energizing unit 42 is electrically connected to the third energizing unit 41. [ And may further include electric wires installed inside or outside the plurality of arms 41a to connect the plurality of arms 41a.

The power supply unit 50 has one electrode connected to the first power supply unit 30 and the other electrode connected to the second power supply unit 40. The first power supply unit 30 and the second power supply unit 40 are powered .

It is preferable that the power source unit 50 is embedded in the handle 20 for ease of use of the handle 20.

For example, the power supply unit 50 may be configured to electrically connect the socket to be inserted into the handle 20, the battery to be inserted into the socket, and the battery and the first power supply unit 30 and the second power supply unit 40 And may include a pair of electrodes.

Hereinafter, the principle of operation of the bolt fastening device for the conductive mold and the component according to the embodiment of the present invention by power supply will be described with the case where the positive electrode is connected to the first power supply unit 30. When the positive electrode is connected to the second power supply unit 40, only the flow of current is formed in the opposite direction, but the operation principle is the same.

2, if there is a damaged portion 4a in the insulating coating layer 4 in contact with the component 1, a current flow in the direction of the arrow can be generated. Therefore, by supplying power to the power supply portion 50 50, the first energizing unit 31, the second energizing unit 32, the bolt 3, the component 1, the third energizing unit 41, the fourth energizing unit 42, One closed circuit forming a sequential current flow is constituted.

3, if there is a damaged portion 4b in the insulating coating layer 4 in contact with the metal mold 2, a current flow in the direction of the arrow can be generated. Therefore, by the power supply of the power supply portion 50, The first energizing unit 31, the second energizing unit 32, the bolt 3, the mold 2, the third energizing unit 41, the fourth energizing unit 42, and the power source unit 50 One closed circuit forming a sequential current flow is constructed.

It is possible to confirm whether or not a current is leaked to the bolt 3 side by the damage of the insulating coating layer 4 of the bolt 3 through the formation of the current flow, Solves problems that must be individually measured.

Meanwhile, the bolt fastening device for the conductive mold and the component according to the present invention may further include the insulating portion 60 as shown in FIG.

That is, the insulating portion 60 is provided on the head 3a of the bolt 3, the head portion 3a of the bolt 3, and the head portion 3a of the bolt 3, even when the insulating coating layer 4 of the bolt 3 is not damaged 10 or the case where the metal mold 2 (or the component 1 or the bolt 3) in contact with the box wrench 10 is fastened in the direction of the component 1 side in the mold 2, Is prevented from being erroneously closed to form a current flow in one direction when the power supply unit 50 is powered.

In this case, it is preferable that the insulating portion 60 is provided on the bottom surface 10c of the Vauxhall wrench portion 10. As described above, since the Vauxhall wrench 10 can be composed of a plurality of Vauxhall wrenches for fastening bolts 3 of various sizes, an insulating portion 60 is formed on the bottom surface of each Vauxhall wrench for convenience of use, .

It is preferable that the insulating portion 60 is formed in the same ring shape as the bottom surface 10c of the vox wrench portion 10 in order to minimize the possibility of separation from the bottom surface 10c of the vox wrench portion 10 during operation or movement Do.

Meanwhile, the bolt fastening apparatus for the conductive mold and the component according to the present invention may further include an output unit 70 as shown in FIG.

The output section 70 is connected to the body 3b of the bolt 3 and the metal mold 2 or the component 1 by the damage of the insulating coating layer 4 to form a closed circuit A warning of the current leakage is given to the user.

In this case, the output unit 70 is preferably provided on one side of the handle 20 so that the user can easily recognize the warning display.

In addition, the output unit 70 preferably comprises a buzzer or a lamp.

The output unit 70 may be provided in any one of the first power supply unit 30 and the second power supply unit 40. For example, as shown in Figs. 2 and 3, the fourth power supply unit 42, A buzzer or a lamp.

As shown in FIG. 1, the bolt fastening apparatus for a conductive mold and a component according to the present invention may further include a switch unit 80 for minimizing power consumption of the power supply unit 50.

The switch unit 80 is provided on the first power supply unit 30 or the second power supply unit 40 and serves to apply or cut off the power supply from the power supply unit 50.

In this case, as described above, since the vox wrench 10 can be constituted by a plurality of vox wrenches for fastening the bolts 3 of various sizes, the switch portion 80 is provided for each of the plurality of vox wrenches It is economically advantageous in terms of production cost to be provided on one side of the handle 20.

For example, the switch unit 80 may be provided in a button manner across the first power supply unit 30 or the second power supply unit 40 so as to be capable of interrupting or releasing the power supply by the pressure .

INDUSTRIAL APPLICABILITY As described above, the bolt fastening device for the conductive mold and the component according to the present invention enables the bolt fastening process to confirm whether or not the current leaks to the bolt side, and finally, And a separate device for measuring the leakage of current is not required, thereby reducing the cost of the apparatus.

The bolt fastening method of the metal mold for the conductive mold and the component according to the embodiment of the present invention is a method of fastening the metal mold 2 and the component 1 with the bolts 3 by using the bolt fastening device of the above- A method of fastening a bolt to a part of a bolt and a method of fastening a bolt to a part of a bolt, Step S30 of measuring the electric conductivity of the part 1 during the step S20 and step S30 of measuring the electric conductivity of the part 1 measured in the step S30 with a predetermined value If it is determined in step S40 that the degree of conduction of the component 1 is equal to or greater than the predetermined value in step S40 and step S50 in which the torque transmission of the voxing wrench 10 is stopped in step S40, And continuing the torque transmission of the wrench wrench 10 when it is less than the predetermined value.

First, in step S10, the degree of electrification of the mold 2 is measured and stored, and then the bolts 3 are started to be tightened (S20). The electric conductivity indicates the degree of electric current flowing through an object, which can be expressed by a current value or a resistance value, which is proportional to the supplied current value or the intensity of the current. Conductivity can be measured by a mechanism that measures the conductivity of the conductor.

The bolt fastening S20 is performed after positioning the component 1 by placing the component 1 on the mold 2, and torque is applied to the bolt wrench 10 for fastening the bolt. When a current is leaked from the bolt 3 during the bolt fastening S20, a warning sound is generated or the warning lamp blinks at the output part 70. At this time, under the condition that the materials of the mold 2 and the part 1 are the same, 1) is measured (S30), the intensity of the current supplied to the component 1 becomes larger than that during insulation, and the degree of conduction of the component 1 becomes high. However, when the current does not leak through the bolt 3, the same electric conductivity as that at the time of insulation is exhibited. When the mold 2 and the component 1 are made of the same metal material, the electric conductivity measured by the mold 2 and the electric conductivity measured by the component 1 when the current leaks through the bolt 3 are the same. If the insulation state of the bolt 3 is excellent, no current is detected or a small amount is detected in the component 1 even if a current flows in the mold 2. [

In step S40, the electric conductivity of the component 1 measured in step S30 is compared with a preset value. When the degree of conduction of the component 1 is equal to or greater than the predetermined value as a result of the comparison at the step S40, the torque transmission of the wrench wrench 10 is stopped (S50) and the torque transmission of the wrench wrench 10 is continued (S60).

That is, when the electric conductivity of the component 1 is equal to or higher than the predetermined value, it is determined that the insulation state of the bolt 3 is poor and the current is leaked, and the tightening operation of the bolt 3 is stopped. It is judged that the insulation state is excellent and the bolt 3 is continuously tightened.

Here, the predetermined value is preferably set to about 5 to 10% of the electric conductivity of the mold 2. When the bolt 3 is judged to be in an excellent insulating state when the electric conductivity of the mold 2, that is, 5 to 10% of the current value applied to the mold 2 is transmitted to the component 1 through the bolt 3, It is judged that the current is leaked through the bolt 3 in the case of 5 to 10% or more, and the fastening of the bolt 3 is stopped.

By stopping the fastening operation of the bolt wrench 10 when the bolt 3 is leaked, unnecessary assembly steps can be minimized and the assembling time can be shortened.

As described above, the present invention has been described with reference to the embodiments shown in the drawings. However, it should be understood that the present invention is by way of example only and that various modifications and equivalent embodiments are possible on the basis of common knowledge in the art . Therefore, the true technical protection scope of the present invention should be determined based on the specific contents of the above-mentioned invention in accordance with the claims to be described below.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt fastening device for a conductive mold and a component, and can be used in an industrial field related to a high-strength component electrification forming technique.

1: Parts
2: mold 2a: insulating layer
3: Bolt 3a: Head
3b: Body
4: Insulating coating layer 4a, 4b: Damaged part
10: Vox wrench part 10a: Bolt insertion groove
10b: handle insertion groove 10c: bottom surface
20: Handle portion 20a: Insertion projection
30: first current carrying unit 31: first energizing unit
32: second energizing unit
40: second power supply unit 41: third power supply unit
41a: arm 41b: pivot member
41c: probe 42: fourth energizing unit
50:
60:
70:
80:

Claims (19)

1. A bolt fastening device for a conductive mold and a bolt fastening device for fastening a part to be coupled to the mold with an insulated bolt,
A bolt wrench portion into which the head of the bolt is inserted;
A knob portion for transmitting torque to the knob wrench portion by rotation;
A first power supply unit electrically connected to the bolt;
A second conductive unit electrically connected to the mold or the component; And
A power supply unit having one electrode connected to the first power supply unit, the other electrode connected to the second power supply unit, and the power supply unit supplying power to the first power supply unit and the second power supply unit;
Lt; / RTI >
Wherein the first conductive unit comprises:
A first energizing unit for electrically connecting the power source unit to a portion where the handle unit and the vox wrench unit are in contact with each other; And
A second energizing unit that electrically connects the first energizing unit to a portion where the head of the bolt wrench is in contact with the vox wrench unit;
And a bolt fastening device for a part for a conductive mold.
delete The light emitting device according to claim 1,
A third energizing unit for electrically connecting the mold or the component to the handle; And
A fourth energizing unit for electrically connecting the third energizing unit to the power unit;
And a bolt fastening device for a part for a conductive mold.
The electronic apparatus according to claim 1, wherein the first conductive unit or the second conductive unit comprises:
Wherein the bolt fastening device comprises at least one electric wire.
The light-emitting device according to claim 1,
Wherein the engaging portion is embedded in the inside of the handle portion.
The light-emitting device according to claim 1,
And the bolt fastening part is embedded in the inside of the bolt wrench part.
The lighting apparatus according to claim 3, wherein the third energizing unit includes:
A plurality of arms coupled to one side of the handle and provided to be foldable with respect to each other; And
A probe of a metal material provided on the arm of the best one of the plurality of arms so as to be able to contact the mold or the part;
Further comprising a bolt fastening device for a part for electric connection use.
The lighting apparatus according to claim 7, wherein the third energizing unit includes:
An electric wire installed on the plurality of arms to electrically connect the probe and the fourth electrification unit;
Further comprising a bolt fastening device for a part of a metal mold and a bolt for electric connection.
The lighting apparatus according to claim 3, wherein the fourth energizing unit comprises:
Wherein the engaging portion is embedded in the inside of the handle portion.
The power supply unit according to claim 1,
And the bolt fastening device is inserted into the handle portion.
The method according to claim 1,
An insulating portion interposed between the cavity portion and the mold or the component to block electrical connection;
Further comprising a bolt fastening device for a part for electric connection use.
12. The semiconductor device according to claim 11,
Wherein the bolt fastening portion is provided on a bottom surface of the bolt wrench portion.
13. The semiconductor device according to claim 12,
And the bolt fastening part is formed in the same ring shape as the bottom face of the bolt wrench part.
The method according to claim 1,
An output unit for warning a current leak when the body of the bolt and the mold or the part are energized;
Further comprising a bolt fastening device for a part for electric connection use.
15. The image processing apparatus according to claim 14,
And the bolt fastening device is provided on one side of the handle portion.
15. The image processing apparatus according to claim 14,
Characterized in that the bolt fastening device comprises a bolt or a lamp.
The method according to claim 1,
A switch unit provided on the first power supply unit or the second power supply unit to apply or cut off power supply from the power supply unit;
Further comprising a bolt fastening device for a part for electric connection use.
A bolt fastening method for a metal part and a part for connecting a metal part and a component using the bolt fastening device of the first aspect of the present invention with the bolt,
Measuring the electrical conductivity of the mold and storing the measured electrical conductivity;
(S20) of attaching the bolt to the mold and the component and applying torque to the bolt with the bolt wrench;
Measuring the electric conductivity of the component during the step S20;
Comparing the electric conductivity of the component measured in step S30 with a predetermined value; And
If it is determined in step S40 that the electric conductivity of the component exceeds a preset value, stopping the torque transmission of the Vauxhall wrench unit;
And a bolt fastening method of the component and the component.
delete
KR1020150076658A 2015-05-29 2015-05-29 A bolt tightening apparatus and method for tightening die for electirically assisted manufacturing and parts thereof KR101782989B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150076658A KR101782989B1 (en) 2015-05-29 2015-05-29 A bolt tightening apparatus and method for tightening die for electirically assisted manufacturing and parts thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150076658A KR101782989B1 (en) 2015-05-29 2015-05-29 A bolt tightening apparatus and method for tightening die for electirically assisted manufacturing and parts thereof

Publications (2)

Publication Number Publication Date
KR20160140257A KR20160140257A (en) 2016-12-07
KR101782989B1 true KR101782989B1 (en) 2017-10-23

Family

ID=57573384

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150076658A KR101782989B1 (en) 2015-05-29 2015-05-29 A bolt tightening apparatus and method for tightening die for electirically assisted manufacturing and parts thereof

Country Status (1)

Country Link
KR (1) KR101782989B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101894184B1 (en) * 2017-03-17 2018-08-31 서울과학기술대학교 산학협력단 Ratchet wrench with electroscopic function

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003117848A (en) * 2001-10-03 2003-04-23 Honda Motor Co Ltd Fastening device
JP2007044784A (en) * 2005-08-08 2007-02-22 Nissan Motor Co Ltd Electric screw driver
JP2010069555A (en) * 2008-09-17 2010-04-02 T K R:Kk Screw tightening device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100123291A (en) 2009-05-15 2010-11-24 에이테크솔루션(주) Length variable t type wrench

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003117848A (en) * 2001-10-03 2003-04-23 Honda Motor Co Ltd Fastening device
JP2007044784A (en) * 2005-08-08 2007-02-22 Nissan Motor Co Ltd Electric screw driver
JP2010069555A (en) * 2008-09-17 2010-04-02 T K R:Kk Screw tightening device

Also Published As

Publication number Publication date
KR20160140257A (en) 2016-12-07

Similar Documents

Publication Publication Date Title
EP3557659B1 (en) Conductor module for terminal
CN103022749B (en) Cable connecting clamp with insulating sheath
CN102082348A (en) Connection structure
KR101782989B1 (en) A bolt tightening apparatus and method for tightening die for electirically assisted manufacturing and parts thereof
CN106413969B (en) Method and device for joining a composite plate component to a functional element
WO2014181741A1 (en) Terminalized wire
KR20160008817A (en) Power terminal for heater
JP5928949B2 (en) Insert molding apparatus and method
US6236026B1 (en) Device for welding an accessory on a pipe by means of electrical heating elements integrated in said accessory
EP3116073A1 (en) Sealed casing and method for connecting this casing to an electrical cable
KR100921485B1 (en) An electrode holder for arc welding
TW201927448A (en) Fastening system
JP2010247221A (en) Component detecting electrode
KR20110138841A (en) Battery sensor of vehicle
JP2009211825A (en) Electric circuit breaking device
RU2796312C2 (en) Bolt and attachment system
US8207697B1 (en) Positioning work stop
US11095051B2 (en) Clamp with a conductive bridge mechanism
KR102624977B1 (en) bolts and fasteners
US9806435B2 (en) Insulation piercing battery connector
AU2021103776A4 (en) Clamp
JP2010253547A (en) Component detection type electrode
CN205996371U (en) Thermocouple welding gripper clamp
JPH0399784A (en) Spot welding equipment
KR20120004685U (en) Heating steering wheel pintle and Heating steering wheel comprising the same

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant