KR101564846B1

KR101564846B1 - Electrode polishing tool of spot welding machine

Info

Publication number: KR101564846B1
Application number: KR1020140104964A
Authority: KR
Inventors: 백운학; 최성종; 신장헌
Original assignee: (주) 청운테크
Priority date: 2014-08-13
Filing date: 2014-08-13
Publication date: 2015-10-30

Abstract

The present invention aims to provide an electrode polishing tool which can simplify the constitution of the electrode polishing tool of the spot welder and reduce the manufacturing cost and the maintenance cost and can easily perform the electrode polishing work, The tool includes a socket having a retainer provided with a bearing so that a wrench having a ratchet structure can be installed thereon and a bearing can be idled from the socket; The electrode abrasive tool of the spot welder is characterized in that it is constituted so as to be able to be installed by exchanging the abrasive stone having the formed abrasive part and the discharge hole for discharging the electrode flux and the abrasive stone not being pulled out from the socket, Is simple, manufacturing and maintenance cost is low, so it can be extended to the workshop. The electrode can be easily and rapidly polished by any worker. Therefore, it is possible to provide convenience for electrode dressing, and it is compatible that the grinding stone different in shape and size according to the electrode type can be exchanged for use, and a tungsten electrode It can be applied to all of the copper alloy electrodes and can be dressed by polishing. Therefore, it is possible to use the electrode for a long time by reducing the consumption of the electrode, and there is an advantage that it can pursue other economic advantages.

Description

[0001] The present invention relates to an electrode polishing tool for a spot welding machine,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode polishing tool for a spot welder, and more particularly, to an electrode polishing tool for an electrode polishing tool for exchanging a polishing stone for polishing an electrode And an electrode polishing tool configured to manually perform electrode polishing.

As is known, a spot welder is a kind of electric resistance welding machine. In the welding method, two or more metal plates are stacked, and electric current is generated by pushing the metal plate up and down while passing electric current, It is a welding method in which external force is applied.

The spot welding using the spot welding machine is mainly used for welding automobile body parts. When the zinc / aluminum-plated steel sheet which is widely used as automobile body material is repeatedly welded, the copper (Cu) component of the copper alloy electrode There arises a problem that welding deteriorates due to the deterioration of the electrification performance of the electrode due to the alloying phenomenon with iron (Fe), zinc (Zn), aluminum (Al) and the like of the steel sheet and wear caused by friction.

In order to solve the problem of such a copper alloy electrode, a tungsten (W) type electrode has been developed as an electrode of a zinc / aluminum plated steel sheet and its application to a process has been attempted.

However, since tungsten has a high temperature strength and does not react with zinc, its service life is prolonged. However, periodic dressing is required because it can not prevent deterioration due to abrasion due to contact and surface contamination caused by spat.

The electrode driver developed in the past is a type that rotates the cutting edge using a small motor or air pressure, or a type that rotates using a ratchet, and is principally a principle of mechanically cutting.

In addition, since the types of electrodes are various in shape and size in correspondence with the products to be produced, and accordingly, the kinds of cutting edges must be varied, it is not suitable for many workers, and tungsten is a hard material, It is not preferable to apply it.

In addition, when dressing a copper alloy electrode using a dougher composed of the above-described mechanical cutting principle, there is a problem in that the loss of the electrode is seriously wasted and the electrode replacement cycle is shortened, resulting in an economical loss.

Therefore, although the dressing of the hard material tungsten electrode is considered to be advantageous in polishing rather than cutting, it is an economical disadvantage to be manufactured at a high price because it is a system for driving a cutting edge by a mechanical means such as a motor for a copper alloy electrode And electrode types are structurally problematic because they have to be manufactured, installed and operated differently according to shape and size in correspondence with production products, and thus have many difficulties.

Korean Registered Patent No. 10-0700134. (Registered on March 20, 2007.) Korean Registered Patent No. 10-0950862 (registered on September 25, 2010.) Korean Registered Patent No. 10-0700134. (Registered on March 20, 2007.)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an electrode abrasive tool having a simple structure for an electrode abrasive tool of a spot welder and capable of reducing manufacturing cost and maintenance cost, &Lt; / RTI >

Also, it is an object of the present invention to provide an electrode polishing tool configured to be able to swiftly and easily replace a grinding stone different in shape and size according to different electrode types (11 types in JIS and 7 in ISO) .

The electrode abrasive tool of the spot welding machine according to the present invention includes a socket provided with a support having a wrench seating portion for mounting a wrench having a ratchet structure and bearing a bearing for idling from the socket,

And a grindstone having a discharge hole for discharging the electrode spindle different from the shape and size of the socket in correspondence with the electrode type can be exchanged and installed in the socket, and the cap is fastened so that the grindstone does not come out of the socket Which is characterized by the present invention.

Since the electrode polishing tool of the spot welding machine as described above is simple in structure and low in manufacturing and maintenance cost, it can be expanded and supplied to the worksite, so that anyone can easily and quickly polish the electrode, thereby providing convenience for electrode dressing In addition,

Particularly, there is a compatibility that can be used by exchanging grinding stones different in shape and size according to the electrode type, and it can be applied to both tungsten electrodes and copper alloy electrodes and dressing by polishing. Therefore, By being usable, there is an advantage that it can pursue other economic benefits.

1 is a perspective view of an electrode polishing tool of a spot welding machine according to the present invention;
2 is an exploded perspective view of an electrode polishing tool of a spot welder according to the present invention.
3 and 4 are cross-sectional views showing the internal construction of the electrode polishing tool of the spot welder according to the present invention
5 is a cross-sectional view showing a coupling structure of a socket and a grinding stone in an electrode polishing tool
FIG. 6 is a view showing an example of the use state of the electrode polishing tool of the spot welder according to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A configuration of an electrode polishing tool of a spot welder according to the present invention will be described in detail with reference to the accompanying drawings.

The electrode polishing tool of the spot welding machine according to the present invention is characterized in that the wrench seating portion 2 is formed on the outside of the socket 3 so that a wrench capable of rotating the electrode polishing tool 1 can be manually set, A socket 3 in which a support 5 provided with a bearing 4 is installed on the outside,

A grinding stone 8 having an inclined slope is formed in the socket 3 so as to have a polishing part 6 and a discharge hole 7 for discharging the electrode slurry,

In order to prevent the grinding stone 8 from rotating in the socket 3, the grinding grooves 3 'and the grinding stone 8' are formed on the grinding stone and the grinding stone 8 ' And the cap 9 is fastened to the end of the socket 3 so that the grinding stone can be exchanged.

Reference numeral 50 denotes a wrench, 51 denotes an electrode, 52 denotes an electrode assembly, and 53 denotes a threaded portion.

The operation of the electrode polishing tool of the spot welder according to the present invention will now be described in detail.

In order to polish the electrode of the spot welder using the electrode polishing tool of the spot welding machine according to the present invention, the grinding stone 8 having the polishing portion 6 having the same shape and size as the electrode 51 of the spot welding machine is inserted into the socket 3 The abrasive unit 6 formed on the abrasive stone 8 is brought into close contact with the electrode 51 and a wrench 50 is provided on the wrench seating unit 2. [

In this state, when one of the hands is held by the support 5 and the other hand is held by the wrench 50, the operation of rotating the wrench is repeated, so that the bearing 5 installed between the support 5 and the socket 3 4, the support 5 is fixed to one hand and does not rotate, so that the socket 3 rotates together with the grinding stone 8.

The reason why the grinding stone 8 can rotate together with the socket 3 as described above is that since the engaging protrusion 8 'formed on the grinding stone 8 is coupled to the engaging groove 3' formed in the socket 3, The grinding stone can be rotated as well.

Then, the electrode is polished while the grinding portion 6 formed on the grinding stone 8 rubs against the electrode 51 while repeating the rotation.

When the electrode 51 is polished in this manner, the alloy deterioration part and the electrode fine part are separated and discharged to the outside of the electrode polishing tool through the discharge hole 7 formed obliquely.

After the electrode polishing operation is completed, the electrode polishing tool 1 is separated from the electrode. When the grinding stone is lifted up by the grinding operation or the grinding stone 6 having the grinding portion 6 different in shape and size according to the electrode type 8, the cap 9 fastened to the end of the socket 3 is loosened, the grindstone is taken out, replaced with a new one, and the cap 9 is tightened again.

At this time, the engaging protrusion 8 'formed on the grinding stone 8 is coupled to the engaging groove 3' formed in the socket 3 so that the grinding stone can be rotated together with the socket when the socket rotates.

1: electrode polishing tool 2: wrench seating part
3: Socket 3 ': Retaining groove
4: Bearing 5:
6: Polishing section 7: Discharge hole
8: Grinding stone 9: Cap

Claims

A socket having an outer portion formed with a wrench seating portion for mounting a wrench for manually rotating the electrode polishing tool and provided with a bearing for allowing the socket to idle,
A grindstone having a discharge hole formed therein for discharging the polishing part and the electrode fin, which are formed in accordance with the shape and size of the socket,
Wherein a cap is fastened to an end of the socket so that the grinding stone provided in the socket is not removed from the socket and the grinding stone can be exchanged.

The electrode polishing tool of a spot welder according to claim 1, wherein a grindstone formed on the upper, lower or lower portion of the polishing portion having the same shape and size as the electrode is provided in the socket.

2. The spot welder according to claim 1, wherein an engaging groove (or engaging projection) formed in the socket is coupled to a locking projection (or an engaging groove) formed in the grinding stone so that the grinding stone is prevented from rotating inside the socket. Electrode polishing tool.