WO2014003350A1

WO2014003350A1 - Chuck for preventing inflow of foreign materials

Info

Publication number: WO2014003350A1
Application number: PCT/KR2013/005337
Authority: WO
Inventors: 이현주
Original assignee: Lee Hyeon Ju
Priority date: 2012-06-28
Filing date: 2013-06-18
Publication date: 2014-01-03
Also published as: KR101222682B1

Abstract

The present invention relates to a chuck for preventing the inflow of foreign materials, which prevents the chuck which is coupled and rotated with a spindle from vibrating and the like by preventing the exposure of coupled surfaces between the spindle and the chuck to foreign materials when the spindle is coupled with the chuck, and which enables continuous precision processing even if the chuck is exchanged with respect to the spindle.

Description

Chuck to prevent foreign material from entering

The present invention relates to a chuck to which a collet or various processing tools are coupled. More specifically, the coupling surface of the spindle and the chuck is contacted in the process of replacing the chuck on the spindle by preventing the coupling key of the spindle from contacting foreign substances. The present invention relates to a chuck that prevents the inflow of foreign substances, which can prevent the ingress of foreign substances through the coupling key of the spindle.

The present invention relates to a chuck that is coupled to a spindle and rotates, and has a collet or various processing tools coupled to the lower end.

In general, a groove is formed in the lower end of the spindle is coupled to the chuck, the collet or various processing tools are coupled to the lower end of the chuck, the machining tool coupled to the chuck and the chuck is rotated in conjunction with the rotation of the spindle to perform a variety of machining operations.

At this time, the lower side of the spindle is provided with a coupling key to rotate the chuck caught on the spindle.

However, the existing chuck has a structure in which the engagement key of the spindle is engaged with the chuck while being exposed to the outside, and the engagement key engaged with the chuck is exposed to foreign substances such as chips.

In other words, the existing chuck has a structure in which the coupling key of the spindle is exposed to various foreign substances such as chips, lubricants, and impurities generated during various processing operations.

At this time, when the chuck is coupled to the spindle, the lower side of the spindle is in contact with the chuck is less likely to penetrate foreign matters.

However, there is a problem that the coupling key of the spindle exposed by the existing chuck structure is exposed to various foreign matters generated in the machining process and thus many foreign matters are stuck.

That is, the existing chuck with the coupling key of the spindle exposed to the outside is stuck with a large amount of foreign matter on the coupling key during the machining operation, and when the chuck is replaced with the spindle, the lower side of the spindle along the binding key, That is, there is a problem in that a gap is generated between the spindle and the replaced chuck by moving to the engagement surface of the spindle in contact with the chuck.

Specifically, foreign matters generated in the process of working continue to stick to the engagement key of the spindle, and foreign matter present in the engagement key penetrates between the engagement key and the contact surface of the replaced chuck when the chuck is replaced for the next process. There is a problem that a gap is generated between the replaced chucks, and a shaking phenomenon occurs in the replaced chuck rotating in conjunction with the spindle. In addition, an error occurs in the machining operation by the machining tool that is coupled to the chuck and rotates due to such a shaking phenomenon, resulting in a decrease in machining quality.

In particular, when the chuck coupled to the spindle is replaced according to the machining operation, many foreign substances generated during the machining process and stuck to the coupling key of the spindle are attached to the lower end of the spindle or to the chuck insertion portion (that is, when the chuck and the spindle are coupled). Penetration into the mating surface in contact with each other) frequently occurs such as the shaking phenomenon.

Background art of the present invention is as disclosed in the Republic of Korea Patent Publication No. 10-2008-0079183.

However, even in the case of Korean Patent Laid-Open Publication No. 10-2008-0079183, there is a situation that does not provide a structure for preventing foreign matter generated during a machining operation from penetrating between the spindle and the chuck.

An object of the present invention devised to solve the above problems is that the coupling key of the spindle is inserted into the key coupling groove formed in the wing of the chuck, the key coupling groove is only the upper side so that the inserted coupling key portion is not exposed to the outside It is formed to be open, so that the foreign matter inflow of the foreign matter through the engagement key of the spindle is prevented from entering the contact surface of the spindle and the chuck in the process of replacing the chuck on the spindle so that the engagement key of the spindle does not come into contact with foreign matter. This is to provide a chuck to be prevented.

In addition, despite the replacement of the chuck to the spindle is to provide a chuck that prevents the inflow of foreign matter to prevent the shaking phenomenon caused by foreign matter in the replaced chuck coupled to the spindle to rotate to enable precision processing.

According to a feature of the present invention for achieving the object as described above, the present invention is formed with a chuck insertion groove 210 in the inward direction with respect to the seating surface 223 of the lower end and engaging key 230 protruding downward In the detachable chuck (Chuck) provided with a spindle (200), a wing portion 130 protruding from the outer circumferential surface 110 is formed so that the upper side is in contact with the seating surface, the wing portion, A key engaging groove 131 is formed in which a coupling key is inserted from an upper side, and only an upper side is opened so that the inserted coupling portion is surrounded from an inner side. An automatic tool changer (ATC, Automatic Tool Changer, An arm coupling groove 133 into which an arm coupling protrusion 411 of 400 is inserted is further formed, and the arm coupling groove is formed to be isolated from the key coupling groove, and the outer circumferential surface 110 is a chuck insertion groove. Can be in close contact with the inner circumferential surface 211 of the (210) It is formed in a shape corresponding to the inner circumferential surface 211, the upper surface 134 of the wing portion is provided with a close contact surface 134 formed in a shape corresponding to the seating surface to be in close contact with the seating surface 223, The outer circumferential surface and the inner circumferential surface and the seating surface and the close contact surface may be coupled to the spindle by being in close contact with each other.

According to the present invention as described above, the foreign matter through the coupling key of the spindle can be prevented in the coupling surface contacting the spindle and the chuck in the process of replacing the chuck to the spindle so that the coupling key of the spindle does not contact the foreign matter. It can provide a chuck that prevents the introduction of foreign matter.

In addition, despite the replacement of the chuck to the spindle, the chuck which prevents the inflow of foreign substances, which prevents the inflow of foreign substances, which prevents the shaking caused by the foreign substances, etc., on the replaced chuck that is coupled to the spindle and rotates, thereby enabling precision machining. Can provide.

1 is a perspective view of a chuck according to the present invention.

2 and 3 are cross-sectional views of the spindle and the chuck to show the configuration of the chuck to prevent foreign matter inflow according to the present invention.

4 is a cross-sectional view of the coupling of the spindle, the coupling member and the chuck.

5 is a view for explaining that the chuck is replaced on the spindle by an automatic tool changer (ATC).

(Explanation of the sign)

100: chuck 110: outer peripheral surface

120: fastening groove 121: screw portion

130: wing 131: key coupling groove

132: partition 133: arm coupling groove

134: contact surface 150: tool coupling portion

200: spindle 210: chuck insertion groove

211: inner peripheral surface 220: coupling member fitting groove

223: Seating surface 230: Bonding key

300: coupling member 310: thread

320: head 400: automatic tool changer

410: arm 411: arm engaging projection

412 support

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, the present invention will be described with reference to the drawings for explaining the chuck to prevent foreign matter from being introduced by the embodiments of the present invention.

1 is a perspective view of a chuck (Chuck) according to the present invention, Figures 2 and 3 are cross-sectional views of the spindle and chuck for showing the chuck to prevent foreign matter inflow according to the invention, Figure 4 is a spindle, the coupling member and the chuck of It is a combined section.

Chuck to prevent foreign matter inflow according to a preferred embodiment of the present invention relates to the chuck 100 coupled to the spindle (Spindle, 200).

The lower end of the chuck 100 is provided with a tool coupling portion 150 is coupled to the collet (collet) to a variety of processing tools, the chuck 100 is coupled to the lower end of the spindle 200.

That is, the chuck to prevent foreign matter from entering the present invention relates to the structure of the chuck (Chuck, 100) that the upper end is detachably coupled to the spindle 200 and the processing tool or collet is coupled to the lower end.

At this time, the spindle 200 is provided with a coupling key 230 is formed in the chuck insertion groove 210 is formed in the inner direction relative to the seating surface 223 of the lower end and protrudes downward.

The chuck 100 according to the present invention has a structure in which an upper end portion is inserted and detachably coupled to the chuck insertion groove 210.

The chuck according to the present invention is prevented from inflow of the chuck, the wing 130 is projected from the outer circumferential surface 110 so that the upper surface is in contact with the seating surface is formed, the upper edge of the wing 130 is the chuck insertion groove ( It is formed to be inserted into the 210.

At this time, the wing portion 130, the coupling key 230 is inserted, the key coupling groove 131 is formed in which only the upper side is opened so that the inserted portion of the coupling key 230 is surrounded on the inside.

That is, the chuck 100 according to the present invention, the wing portion 130 is formed on the outer circumferential surface 110, the upper side of the wing portion 130 is inserted into the chuck insertion groove 210 is coupled to the spindle 200 When the wing 130 is formed, a key coupling groove 131 is formed so that the coupling key 230 is enclosed therein, and the upper side of the wing 130 is a seating surface 223 of the spindle. Is formed to abut.

The coupling key 230 is configured to engage the chuck 100 with the spindle 200 and rotate together with the spindle, and is inserted into the key coupling groove 131.

That is, the chuck 100 according to the present invention is inserted and coupled to the upper side is inserted into the chuck insertion groove, the wing portion 130 is formed on the outer circumferential surface is in contact with the seating surface, the key portion only the upper side open the key coupling groove 131 is formed and the coupling key is inserted into the key coupling groove.

That is, the coupling key 230 is inserted into the key coupling groove 131 so as to be isolated from the outside, thereby preventing foreign substances generated in the processing process from sticking to the coupling key 230. Accordingly, in the process of replacing the chuck 100 on the spindle 200, foreign matters are prevented from being transferred to the seating surface 223 and the like through the coupling key 230.

The spindle 200 is formed with a chuck insertion groove 210 which is a groove formed inward with respect to the seating surface 223 of the lower edge portion.

The inner circumferential surface 211 of the chuck insertion groove 210 is formed inwardly from the seating surface 223, and the diameter of the chuck insertion groove 210 is formed in a tapered shape in which the diameter decreases from the lower side to the upper side.

The upper inner circumferential surface of the chuck insertion groove 210 is provided with a coupling member fitting groove 220 that is coupled by the fitting method of the head 320 of the coupling member 300 coupled to the chuck 100.

At this time, the head 320 and the coupling member fitting groove 220 is coupled to the rotation of the spindle 200, the coupling member 300 when the head 320 is fitted to the coupling member fitting groove 220. Of course, they are formed in the form of engaging with each other to be rotated.

Thread 310 is formed on the outer peripheral surface of the lower end of the coupling member 300.

The chuck 100 is inserted such that the outer circumferential surface 110 is in close contact with the inner circumferential surface of the chuck insertion groove 210 of the spindle 200 from the upper side.

At this time, the wing portion 130 protruding from the outer peripheral surface is formed on the lower side of the chuck 100, the seating surface 223 of the spindle 200 is in close contact with the upper surface of the wing portion 130.

A fastening groove 120 into which the coupling member 300 is inserted is formed on an upper side of the chuck 100, and a screw thread 310 formed on an outer circumferential surface of the coupling member 300 on an inner circumferential surface of the fastening groove 120. Screw portion 121 is formed to be screwed with.

That is, the lower end of the coupling member 300 is coupled to the chuck 100 by screwing the thread 310 to the screw portion 121, the upper end of the coupling member 300, that is, the head 320 is the It is coupled to the spindle 200 by being fitted into the coupling member fitting groove 220 of the spindle 200.

In addition, the wing portion 130 is formed with a key coupling groove 131 of the groove shape to allow the coupling key 230 is inserted and coupled.

At this time, the key coupling groove 131 is formed so that only the upper surface of the wing 130 is opened, the side and the lower surface is sealed.

That is, when the coupling key 230 is inserted into the key coupling groove 131, the side of the inserted coupling key 230 is surrounded by the inner circumferential surface of the key coupling portion 131, so that the machining tool is coupled to the lower end thereof. When the 100 rotates in conjunction with the spindle 200 and various foreign substances generated when processing a product are prevented from sticking to the coupling key 230, the foreign matter is interposed between the chuck 100 and the spindle through the coupling key. It can be prevented from penetrating into. In particular, the foreign matter is prevented from adhering to the seating surface 223 of the spindle 200 or the contact surface 134 of the wing 130 described later, even if the chuck 100 is replaced on the spindle 200, the coupling key 230 The foreign matter is prevented from adhering to the coupling surface of the spindle 200 and the chuck 100 through the) and there is an effect that can prevent the occurrence of tremors caused by the foreign matter.

5 is a view for explaining that the chuck 100 is replaced on the spindle 200 by an automatic tool changer (ATC) 400.

An arm coupling groove 133 may be further formed in the wing 130 of the chuck 100.

That is, the wing 130 has an arm of an automatic tool changer (ATC) 400 on the side of the lower portion of the key coupling portion 131, that is, on the lower side of the wing 130. An arm coupling groove 133 into which the coupling protrusion 411 is inserted is further formed.

In this case, the arm coupling groove 133 is formed to be isolated from the key coupling groove 131 by the partition wall 132.

Automatic Tool Changer (ATC, 400) has a variety of machine functions, such as one machine for drilling, cutting, digging and cutting surfaces. Refers to the device to be exchanged. That is, a device for automatically exchanging two or more chucks combined with a collet or a machining tool as needed, and the arm 410 of the automatic tool changer grabs and rotates the chuck 100 to move to another machining position. Play a role.

The tool changer 400 includes an arm 410 that rotates, and arm coupling protrusions 411 and support portions 412 coupled to the chuck 100 at both ends of the arm 410 are symmetrical. Is formed.

At this time, the arm coupling protrusion 411 is inserted into the arm coupling groove 133 formed in the wing 130 of the chuck 100 and the support 412 is the wing 130 and the lower wing of the chuck 100. By being inserted into the groove between the portions 140, the arm 410 supports and moves the chuck 100.

By the combination of the arm coupling protrusion 411 and the arm coupling groove 133, the replacement movement of the chuck 100 by the automatic tool changer 400 can be made more stable.

In addition, the arm coupling groove 133 and the key coupling groove 311 may be formed to be isolated from each other so that foreign matter does not come into contact with the key 230 and the like of the spindle 200.

At this time, the configuration other than the arm coupling protrusion 411 and the support 412 for the automatic tool changer 400 is already well known in the art to which the present invention belongs, detailed description thereof will be omitted.

The outer circumferential surface 110 of the chuck 100 according to the present invention is formed in a shape corresponding to close contact with the inner circumferential surface 211 of the chuck insertion groove 210, the mounting surface 223 on the upper surface 134 of the wing portion ) Is provided with a close contact surface 134.

The configuration of the outer circumferential surface 110 and the contact surface 134 of the chuck as described above allows the chuck 100 to be coupled to the rear surface of the spindle 200.

That is, when the outer circumferential surface 110 of the upper side of the wing 130 is inserted into and coupled to the chuck insertion groove 210 of the spindle 200, the outer circumferential surface 110 of the chuck 100 and the inner circumferential surface of the spindle 200 ( 211 may be in surface contact with each other, and at the same time, the close contact surface 134 of the wing 130 and the seating surface 223 of the spindle 200 may be in surface contact with each other to provide a back restrained structure. do.

In particular, when the chuck 100 according to the present invention has the above-described back restraint structure, the foreign matter is present on the contact surface 134 of the wing 130 and / or the seating surface 223 of the spindle 200. As a result, a gap is generated between the coupling surface of the chuck and the spindle due to the replacement of the chuck 100, and the gap may cause the vibration of the chuck, thereby greatly reducing the quality of the precision machining. However, the coupling key 230 of the spindle 200 may be used. Is inserted into the key coupling groove 131 formed in the wing 130 to prevent foreign matter, such as chips generated from the outside to penetrate, it is possible to prevent the presence of foreign matter on the coupling surface of the chuck and the spindle.

At this time, the inner circumferential surface 211 of the spindle 200 is formed in a tapered shape in which the diameter of the chuck insertion groove 210 becomes smaller from the lower side to the upper side, and the outer circumferential surface of the chuck 100 corresponds to the inner circumferential surface 211. It is preferably formed in the form.

Those skilled in the art will appreciate that the present invention can be embodied in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is indicated by the scope of the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalent concept are included in the scope of the present invention. Should be interpreted.

Claims

In the chuck detachable from the spindle (200) with a chuck insertion groove 210 is formed in the inner direction based on the seating surface 223 of the lower end and the engaging key 230 protruding downward,

A wing portion 130 protruding from the outer circumferential surface 110 is formed so that the upper surface is in contact with the seating surface,

The wing portion is formed with a key coupling groove 131, the upper side of which is opened so that the coupling key is inserted from the upper side and the inserted coupling key portion is surrounded from the inside,

At the lower side of the wing portion, an arm engaging groove 133 into which an arm engaging protrusion 411 of an automatic tool changer (ATC) 400 is inserted is further formed, and the arm engaging groove is the key. It is formed to be isolated from the coupling groove,

The outer circumferential surface 110 is formed in a form corresponding to the inner circumferential surface 211 to be in close contact with the inner circumferential surface 211 of the chuck insertion groove 210,

The upper surface 134 of the wing portion is provided with a contact surface 134 formed in a shape corresponding to the mounting surface to be in close contact with the seating surface 223,

The outer circumferential surface and the inner circumferential surface and the seating surface and the contact surface is in close contact with the surface of the chuck to prevent foreign material inflow, characterized in that coupled to the spindle.