KR101564963B1

KR101564963B1 - finger of automatic tool changer

Info

Publication number: KR101564963B1
Application number: KR1020150073041A
Authority: KR
Inventors: 조삼증
Original assignee: 주식회사 제이에스테크; 조삼증
Priority date: 2015-05-26
Filing date: 2015-05-26
Publication date: 2015-11-04

Abstract

The present invention relates to a finger of an automatic tool changer and, more specifically, relates to a finger having a structure which maintains consistent tool mounting/dismounting performance even when used for a long time, extending a service life. According to the present invention, the finger of an automatic tool changer comprises: an entrance (A1) made of a synthetic resin opened to insert a flat tool (B) thereinto; a gripping unit (A2) to enclose and grip an outer surface of the tool (B) inserted from the entrance (A1); a mounting unit (A3) to support the gripping unit (A2) to mount a body; and an elastic recess (A6) formed on both sides of a rear portion of the gripping unit (A2) to allow the gripping unit (A2) and the entrance (A1) to exert an elastic force from the mounting unit (A3). Inner surfaces (10) of the entrance (A1) are in parallel with each other and narrower than an outer circumference of the tool (B). Outer surfaces (20) of the entrance (A1) are formed in parallel with an inner surface (10) of the entrance (A1) from a front end of the entrance (A1) to a portion thereof meeting the gripping unit (A2). Inner surfaces (30) of the gripping unit (A2) are equal to or narrower than the outer circumference of the tool (B). Outer surfaces (40) of the gripping unit (A2) are formed in an arc shape, becoming thicker towards a portion where an elastic recess (A6) from a front end thereof is met, and the outer surface (20) of the entrance (A1) is met.

Description

A finger of an automatic tool changer

The present invention relates to a finger of an automatic tool changer, and more particularly, to a finger having a structure in which detachability of a tool does not change even if it is used for a long period of time and its service life can be prolonged.

An automatic tool changer (ATC) is an automatic tool changer (NC) for numerical control (NC) machining of a workpiece, such as drilling holes, threading, , A device that allows you to automatically replace the appropriate tool.

The finger of an automatic tool changer refers to a handle-like mechanism that allows a tool to be detached and removed when the tool of the automatic tool changer is removed or placed in the machine tool.

FIG. 2 shows an embodiment of an automatic tool changer to which a finger according to the present invention is applied. As shown in the figure, the automatic tool changer includes a bracket D1 mounted on a chain D rotating in an endless track, It is common to provide a finger A at the upper end of the tool D1 and hold the upper end of the tool B to the finger A. [

Hereinafter, a conventional finger A will be described as follows.

Figs. 1 to 6 are plan views showing conventional fingers A, wherein the shape of the fingers as shown in the figure is an entrance A1 opened to allow the tool B in the plane to be drawn in, A holding portion A2 for holding the grip portion A2 and capable of mounting the body, a gripping portion A2 for holding the gripping portion A2, And elastic means for applying elastic force to the grip portion A2 from the mounting portion A3.

Hereinafter, a finger transition process will be described with reference to the accompanying drawings.

As shown in FIG. 1, a metal finger was bent to form a body in the form of a leaf spring, so that the tool B was detached. However, this method has a problem in that the elastic force of the body is strong in the early stage, the attachment / detachment of the tool B is stiff, and the elastic force of the body becomes weak at the time of using for a long time and the gripping force is loosened.

2, the finger of FIG. 2 extends the ball A4 at the inlet A1 and springs the ball A4 to the spring S, And the inner direction is made to have an elastic force. However, since the elastic force is generated only at the inlet A1, the gripping force for wrapping the entire outer surface of the tool B is insufficient and the increase of the protrusion distance of the ball due to the occurrence of the engagement is limited, Is deteriorated in efficiency.

3, the fingers of Fig. 3 are equally divided into a body, a center hole A5 is provided on both sides of the center rear of the tool B, So that both ends of the body are opened around the rotation center hole A5. However, this method is the same as that of the laundry tongs because the opening A1 is opened around the center of rotation, so that the tool B is easily released from the body, but when the tool B is drawn into the body, Is caught by the entrance A1 and is not opened easily.

The fingers of FIGS. 1 to 3 are all made of metal, and a common method of attaching and detaching the tool B by applying the spring and the elastic force of the spring is applied. , The surface of the tool (B) is severely scratched and the noise of the tool (B) is severely changed.

The material of the finger gradually changed from metal to synthetic resin.

FIG. 4 is a developed view of FIG. 3. As shown in FIG. 4, the fingers of FIG. 4 constitute a body to enclose the tool B, and the material itself of the body is made of a synthetic resin having elasticity without applying a spring. However, FIG. 4 shows a problem that the elastic action of the inlet A1 is not smoothly formed and the tool B is difficult to attach and detach.

As shown in FIG. 5, the fingers of FIG. 5 are made of synthetic resin having elasticity, and the fingers of FIG. 5 are made of synthetic resin having elasticity, Thereby forming the groove A6. However, FIG. 5 has a problem that a crack A61 is generated in the nearest portion of the center of the elastic groove A6 and the tool B when used for a long period of time. More specifically, Fig. 5 shows a principle in which the entire detachable part is rotated about the elastic groove A6. As the tool B is attached and detached, a portion of the tool B nearest to the center of the tool B This will be repeated intensively. So that cracks were easily generated in the portion of the tool B nearest to the center of the tool B from the elastic groove A6. As a result, the elastic force and gripping force are gradually decreased to deteriorate the detachability during long-term use, and it is difficult to use for a long time due to the occurrence of cracks in the portion where elastic force is exerted.

Registration Utility Model No. 20-0231459

The present invention has been developed in order to solve the conventional problems such as the background art, and in particular, it is possible to manufacture a finger with a synthetic resin, to prevent deterioration of detachability even when used for a long period of time, There is a purpose.

In order to achieve the above object, the fingers of the tool changer proposed in the present invention are made of a synthetic resin having elasticity, and are provided with an inlet opened to receive a tool in a plane, a tool inserted from the inlet, And an elastic groove formed on both sides of the rear portion of the grip portion to allow the grip portion and the mouth to exert an elastic force from the mounting portion, The outer surface of the inlet is formed so as to be parallel to the inner surface of the inlet from the tip of the inlet to the portion leading to the grip portion and the inner surface of the grip portion is in contact with the outer periphery of the tool And the outer surface of the grip portion is formed in an arc shape, Toward the portion leading to suggest that made of a structure in which the width is gradually thickened.

According to the present invention, the finger proposed in the present invention has a structure in which the inlet and grip portions are pushed and unfolded from the mounting portion by the material of the body and the elastic groove, and the grip portion has a supporting force, , The elastic operation of the gripping part is implemented to be narrower than the mouth, and the mouth and the gripping part are uniformly dispersed to perform the elastic operation, so that the elastic force is not concentrated at one place.

Therefore, the finger proposed in the present invention does not deteriorate the detachability even when it is used for a long period of time compared with the conventional finger, and does not generate cracks, and is thus used for a long time.

Figs. 1 to 5 are plan views showing fingers of a conventional tool changer
6 is a plan view showing a finger of the tool edible apparatus according to the present invention.
7 is a plan view showing the ratio of FIG. 6 in detail;
Figure 8 shows the operation of Figure 6
Fig. 9 is a plan view showing still another example of Fig. 6
10 is a detailed view of Fig. 6
Fig. 11 is a perspective view showing the embodiment of Fig. 6

Hereinafter, the present invention will be described with reference to the accompanying drawings.

It should be noted, however, that the appended drawings may be exaggerated, omitted, or schematically illustrated for convenience of explanation. Also, the terms and names used in the description may be implicitly determined by the shape, function, role, and the like of the configuration, not the dictionary meaning. The description of the position will be described with reference to the drawings unless otherwise specified. And specific descriptions of well-known and commonly-used techniques may be omitted to avoid obscuring the subject matter, or to be omitted or replaced with a simple code or name.

6, The tool changer according to the present invention Finger 1 is a plan view showing the structure of a semiconductor device according to an embodiment of the present invention.

As shown, the fingers of the tool changer according to the present invention have an inlet A1 that is open to receive the tool B in a plan view, a tool B which is drawn from the inlet A1, A mounting portion A3 for supporting the grip portion A2 to mount the body, a mounting portion A3 formed on both sides of the rear portion of the grip portion A2, Wherein the inner surface (10) of the inlet (A1) is formed parallel to the outer circumferential surface of the tool (B) so that the grip portion (A2) and the inlet (A1) And the outer surface 20 of the inlet is formed to be parallel to the inner surface 10 from the tip of the inlet A1 to the portion leading to the gripping portion A2 and the inner surface 30 of the gripping portion A2, (B), the outer surface (40) of the grip portion is formed in an arc shape, and the outer surface (40) of the grip portion And the width gradually increases from the rear end to the rear end of the elastic groove A6.

Further, the finger is made of a synthetic resin having elasticity. More specifically, it is preferable to use a material having a low tensile strength, elasticity, and abrasion resistance, but low fatigue, strain, and moisture absorption rate. Particularly, the reason why the water absorption rate should be low is because the synthetic resin hardens when moisture is absorbed and dried in the air, and cracks easily occur. A suitable material may be polyamide-based or polyacetal resin-based.

Figure 7 6 FIG. 1 is a plan view showing details of the ratio, and is described with reference to the accompanying drawings.

As shown, the fingers according to the invention are particularly characterized in that the outer surface 20 of the inlet A1 is formed parallel to the inner surface 10 of the inlet A1 and the outer surface 40 of the grip A2, Is formed in a circular arc shape and has a structure in which the width gradually increases from the portion extending from the outer surface 20 of the inlet A1 to the portion leading to the elastic groove A6.

At this time, the width x at one end of the gripping portion A2 connected to the elastic groove A6 extending from the width y at one end of the inlet A1 and the width y at the end of the inlet A1 is smaller than the width x of the tool B The width y at one end of the inlet A1 is 20 to 25 and the width x at one end of the gripping portion A2 is 20 to 25 when the diameter z is 100 and the thickness of the body of the finger is 26, ) Is preferably formed in a ratio of 25 to 30.

It is preferable that the width w of one end of the inlet A1 which narrows inward from the diameter z of the tool B is formed at a ratio of 1 to 2 relative to 100. [

When the width y at the end of the inlet A1 and the width x at one end of the grip A2 are less than the above values, the supporting force capable of supporting the tool B is reduced, And the attachment / detachment of the tool B is made too loose. The unintentional disengagement of the tool B from the finger frequently occurs.

On the other hand, when the width y of one end of the inlet A1 and the width x of one end of the gripping portion A2 are formed to be equal to or larger than the above-mentioned values, elastic force is hardly exerted, This becomes difficult.

Therefore, in order to satisfy the smooth elastic action, the gripping force, and the durability, it is ideal to be formed within the above-mentioned numerical value range.

Figure 8 6 Fig. 2 is a plan view showing an operation of the present invention, and will be described with reference to the accompanying drawings. Fig.

That is, the grip portion A2 is structured to have a supporting force, and the inlet A1 is formed in a structure capable of smoothly performing an elastic action.

The grip portion A2 and the inlet A1 are elastically moved by the elastic groove A6 from the mounting portion A3 so that the inlet A1 and the grip portion A2 come into close contact with each other, So that the elastic operation is narrower than the inlet A1 and the inlet A1 is parallel to the tip of the grip A2 so that the elastic operation is wider than the grip A2.

In other words, at the time of attaching / detaching the tool B, the grip portion A2 and the inlet A1 are not concentrated in one place and are not elastically actuated.

Accordingly, the structure of the finger proposed in the present invention has a structure in which elastic force is dispersed without concentrating one place, so that detachability is not deteriorated even if it is used for a long time, and cracks do not occur and the finger can be used for a long time.

9 is a cross- 6 FIG. 12 is a plan view showing another example, and will be described with reference to the accompanying drawings. FIG.

The drawing shows an example of a wrong application.

The outer surface 20 of the inlet A1 may be narrowly formed by not forming the inner surface 10 of the inlet A1 in parallel with the outer surface 20 of the inlet A1 but by tilting the tip 21 by applying the finger according to the present invention have.

However, in this way, the thickness of the tip of the inlet A1 is narrowed, and only the inlet A1 is elastically actuated while being supported by the holding portion A2.

Therefore, in this configuration, the elastic action is concentrated between the tip of the grip portion A2 and the tail of the inlet A1, and the inner surface of the inlet A1 of the portion is torn or crack 21a is generated.

It is therefore ideal to form the possible inlet A1 in parallel and to further extend the length of the inlet A1 in order to further improve the elastic force of the inlet A1 or to increase the length of the inlet A1, It is preferable to make the inclination 21 so that the tip of the outer surface 20 becomes narrower, but the inclination angle is made finer.

Figure 10 6 The detailed description will be made with reference to the accompanying drawings as follows.

(A) is a perspective view of FIG. 6, (b) is a bottom perspective view of (a) from below, and (c) is a plan view of (a).

As shown in the figure, the finger according to the present invention has a step 50 formed on the inner surface 10,30 of the mouth A1 and the grip A2, Thereby forming a key-fitting groove 60 extending from the key-fitting groove 60. [

That is, although not shown in FIG. 6 for explaining the principle, the fingers according to the present invention are formed with the step 50 on the inner surface of the inlet A1 and the gripping portion A2. Although not shown in this figure, the tool B is also formed with a trough B1 corresponding to the step 50 and joined to each other. The male and female engagement of the step 50 and the stop B1 functions to more firmly fix the tool B from the finger. More specifically, it functions to prevent the tool B from swinging from the finger to the left and right in the vertical direction.

On the other hand, although not shown in the figure, the finger C is coupled to the finger, and the key C is mounted on the key mounting groove 60 formed on the bottom surface of the finger as shown. Although not shown in this figure, the tool B is also formed with a key groove B2 corresponding to the key C and coupled to each other. The male and female engagement of the key C and the key groove B2 functions to prevent rotation of the tool B from the finger.

11 6 &Lt; / RTI > As a perspective Will be described with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

As shown in the figure, the automatic tool changer includes a bracket D1 mounted on a chain D rotating in an endless track, a finger according to the present invention mounted on the top of the bracket D1, B) is grasped.

In this way, the tool B can be easily attached and detached from the automatic tool changer, and smooth operation can be ensured.

As described above, the fingers of the tool changer according to the present invention have been described. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined in the appended claims. And it can be used in various applications and modifications based on this.

A: Finger
A1: Entrance
A2:
A3:
A4: Elastic groove
10: Inner surface of entrance
20: Outer surface of entrance
30: inner surface of the grip
40: outer surface of grip portion
50: Step
60: Key mounting groove
x: width of the grip section
y: width of inlet
z: Diameter of tool

Claims

A finger of a tool changer having a structure in which the detachability of a tool is not changed even if it is used for a long period of time,
Wherein the fingers of the tool change device
An inlet A1 which is opened to receive the tool B; A gripping portion A2 for allowing the tool B to be drawn from the inlet A1 and to be gripped by gripping the outer surface of the tool B; A mounting portion A3 for supporting the grip portion A2 to mount the body; And an elastic groove (A6) formed so that the grip portion (A2) can exert an elastic force from the mounting portion (A3), characterized in that:
The elastic grooves A6 formed in the fingers of the tool changer are formed on both sides of the rear portion of the grip portion A2,
The inner surface (10) of the inlet (A1) formed in the fingers of the tool changer is parallel and narrower than the outer periphery of the tool (B)
The outer surface 20 of the inlet A1 formed in the finger of the tool changer is formed to be parallel to the inner surface 10 of the inlet A1 from the tip of the inlet A1 to the portion leading to the grip A2 And,
The inner surface 30 of the grip portion A2 formed on the finger of the tool changer is equal to or narrower than the outer periphery of the tool B,
The outer surface 40 of the grip portion A2 formed on the finger of the tool changer has an arcuate shape and has a width gradually increasing from the tip end of the inlet A1 to the outer surface 20 leading to the elastic groove A6 The structure is made thicker gradually,
A step 50 corresponding to the groove B1 of the tool B1 is formed on the inner surface 10,30 of the grip A1 and the grip A2 on the finger of the tool changer,
A key mounting groove 60 is formed in the bottom of the body of the finger of the tool changer at a portion extending rearward from the central portion of the grip portion A2 so that the key C corresponding to the key groove B2 of the tool B1 can be mounted. Is formed on the outer circumferential surface of the tool holder.

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