KR102661113B1 - Cnc sliding chuck - Google Patents

Abstract

The present invention relates to a chuck for a lathe, which is installed at the end of the main shaft of a lathe and grips a fixed object, comprising: a chuck body having an opening formed in a portion; A fixing unit made up of a plurality of blocks, each block being coupled at the top of the chuck body, and fixing the fixing object while tightening it in a sliding manner; and a connection unit interposed between the plurality of blocks of the fixing unit to connect the plurality of blocks.

Description

CNC sliding chuck {CNC SLIDING CHUCK}

The present invention relates to a CNC sliding chuck, and more specifically, to a CNC sliding chuck that is easy to assemble and install.

Among the machine tools that mechanically process products, lathes are the most used. These lathes are classified into manually operated general-purpose lathes (manual lathes), automatically operated numerical control lathes, and computer numerical control lathes. do.

In particular, computer numerical control lathes, also called CNC lathes, are machine tools equipped with a controller on a general-purpose lathe and have the advantage of being able to automatically process various parts through a program.

A computer numerical control lathe consists of a controller, which is an electronic device that can automatically operate the machine, and a machine body, which is a mechanical device. Here, the controller plays the role of controlling the operation of the machine body through a CNC system program, PLC program, etc. Similar to the structure of a general-purpose lathe, the main body consists of a head stock, chuck, tool post, tail stock, bed, carriage, transfer device, hydraulic device, etc. It is composed.

The lathe chuck is installed at the end of the main shaft to grip the workpiece. It can be formed of a normal chuck, pneumatic chuck, hydraulic chuck, collet chuck, magnetic chuck, etc., and usually has three or four jaws. ) is formed into a structure that holds the processing object while moving individually or in conjunction with each other.

However, in the case of a conventional lathe chuck, even if the jaws are moved outward in the radial direction and opened after completion of processing of the workpiece, it is not easy to discharge the workpiece, so there is a problem in that the overall processing time is long.

Common index chucks used in CNC lathes are mainly for machining workpieces with the same shape repeated at intervals of 45°, 90°, 180°, etc.

In other words, an index chuck is used when machining a T-type or Y-type workpiece.

In a typical CNC lathe with such an index chuck, in order to drive the workpiece at a constant rotation angle, the index chuck is connected to a separate drive source provided in the CNC lathe main body, or a separate drive source is provided to the index chuck and connected to the drive source. It is common to rotate the workpiece by

However, if the workpiece is to be driven by a drive source operated by an electric motor, hydraulic or pneumatic cylinder, the structure of the index chuck becomes very complicated and the overall price becomes very high.

This problem is caused by the need for a dedicated index chuck to be connected to the CNC lathe body when attempting to rotate the workpiece of the index chuck using a separate drive source provided on the CNC lathe body, which not only makes it expensive but also reduces its versatility.

In addition, this structure makes it difficult to spread widely because manufacturers who use CNC lathes without an index function have to replace the CNC lathe itself with an expensive CNC lathe with an index function.

On the other hand, even if a separate drive source is provided in the index chuck itself and the workpiece is to be rotated by the drive source, the drive source must obtain energy from the outside such as electricity/hydraulic/pneumatic pressure to be driven, so this energy supply connection is required. The structure becomes very complex.

What should be kept in mind is that the index chuck itself is a part that is rotated by the spindle of the CNC lathe when machining the workpiece. In order to supply energy such as electricity/hydraulic/pneumatics to the rotating part in this way, not only does the structure become complicated, but additional facilities are required, which is a factor hindering the spread of index chucks.

Republic of Korea Patent No. 10-0978319 (2010.08.26) Republic of Korea Patent No. 10-0905079 (2009.06.30)

Therefore, the present invention was devised to solve the above problems, and the problem to be solved by the present invention is to provide a CNC sliding chuck that is easy to install on a lathe, etc., saves replacement time, and is manufactured to be easy to install and use. will be.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly apparent to those skilled in the art from the description below. It will be understandable.

The present invention was created to improve the problems of the prior art as described above, and includes a lathe chuck installed at the end of the main shaft of a lathe to hold a fixed object, comprising: a chuck body having an opening formed in a portion; A fixing unit made of a plurality of blocks, each block being coupled at the top of the chuck body, and fixing the fixing object by tightening it in a sliding manner; and a connection unit interposed between the plurality of blocks of the fixing unit to connect the plurality of blocks.

In addition, in one embodiment, the fixing unit includes a jaw that is slidably coupled through the opening of the chuck body to grip or release the grip of the fixing object; A clump block coupled to the opening side at the top of the chuck body and to which the jaws are detachably coupled; a sliding block positioned on the chuck body with one side facing the clump block; and a fixing block that supports and fixes the other side of the sliding block on the chuck body.

Additionally, in one embodiment, the clump block includes a jaw coupling portion formed on one side in a shape corresponding to the opening and to which the jaws are coupled; and a connection unit accommodating portion formed on the other side in a shape corresponding to the connection unit and having a coupling protrusion so that the connection unit can be separated.

Additionally, in one embodiment, the jaw may be formed in a rectangular block shape corresponding to the jaw coupling portion and the opening of the chuck body to which the clump block is coupled.

Additionally, in one embodiment, the sliding block includes a connection unit engaging protrusion protruding from one side and inserted into the connection unit; And it may include; a fixed block mount portion formed on the other side and mounted on the fixed block.

In addition, in one embodiment, the connection unit includes a clump block coupling portion that is coupled to the clump block and has an insertion hole into which a fixing object is inserted and a first coupling hole corresponding to the coupling protrusion is formed on one side; and a sliding block coupling portion in which a second coupling hole corresponding to the connection unit coupling protrusion is formed on the other side of the clump block coupling portion.

Additionally, in one embodiment, the connection unit receiving portion of the clump block may be formed in a hemisphere or square shape.

Additionally, in one embodiment, the clump block coupling portion of the connection unit may be formed in a hemispherical shape corresponding to the connection unit receiving portion.

Additionally, in one embodiment, the connection unit may vary the length from the clump block coupling portion to the sliding block coupling portion in response to the size of the fixed object.

According to one embodiment of the present invention, the chuck can be adjusted and fixed according to the size of the fixed object by tightening or opening it in a sliding manner with the fixed object in between using jaws and a sliding block.

Additionally, according to one embodiment of the present invention, fixing objects of more diverse shapes and sizes can be fixed by changing the size or shape of the clump block and the connection unit.

However, the effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned above will be clearly understood by those skilled in the art from the description below. You will be able to.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the invention described later. Therefore, the present invention includes the matters described in such drawings. It should not be interpreted as limited to only .
1 is a perspective view of a CNC sliding chuck viewed from above according to a first example of the present invention.
Figure 2 is a perspective view of the CNC sliding chuck of Figure 1 looking up from the bottom.
Figure 3 is an exploded perspective view of the CNC sliding chuck of Figure 1.
Figure 4 is a perspective view of a CNC sliding chuck viewed from above according to a second example of the present invention.
Figure 5 is an exploded perspective view of the CNC sliding chuck of Figure 4.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, since the description of the present invention is only an example for structural and functional explanation, the scope of the present invention should not be construed as limited by the examples described in the text. In other words, since the embodiments can be modified in various ways and can have various forms, the scope of rights of the present invention should be understood to include equivalents that can realize the technical idea. In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment must include all or only such effects, so the scope of the present invention should not be understood as limited thereby.

The meaning of terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are used to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, a first component may be named a second component, and similarly, the second component may also be named a first component. When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected to the other component, but that other components may also exist in between. On the other hand, when a component is said to be “directly connected” to another component, it should be understood that there are no other components in between. Meanwhile, other expressions that describe the relationship between components, such as “between” and “immediately between” or “neighboring to” and “directly neighboring to”, should be interpreted similarly.

Singular expressions should be understood to include plural expressions, unless the context clearly indicates otherwise, and terms such as “comprise” or “have” refer to the specified features, numbers, steps, operations, components, parts, or them. It is intended to specify the existence of a combination, and should be understood as not excluding in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein, unless otherwise defined, have the same meaning as commonly understood by a person of ordinary skill in the field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as consistent with the meaning they have in the context of the related technology, and cannot be interpreted as having an ideal or excessively formal meaning unless clearly defined in the present invention.

Figure 1 is a perspective view of a CNC sliding chuck looking up from the top according to a first example of the present invention, Figure 2 is a perspective view of the CNC sliding chuck of Figure 1 looking up from the bottom, and Figure 3 is a perspective view of the CNC sliding chuck of Figure 1. It is an exploded perspective view, Figure 4 is a perspective view looking down from the top of the CNC sliding chuck according to the second example of the present invention, and Figure 5 is an exploded perspective view of the CNC sliding chuck of Figure 4.

As shown in Figures 1 to 5, in the lathe chuck (10, 10a) installed at the end of the main shaft of the lathe to hold a fixed object, the present invention includes a chuck body (100, 100a), a fixing unit (200, 200a) and connection units 300 and 300a.

Chuck bodies (100, 100a) may have openings (110, 110a) formed in some portions. Specifically, the chuck body (100, 100a) is a component that forms the body of the lathe chuck (10, 10a), provides a space where a fixed object can be fixed, and can serve as a fixture on which the fixed object is fixed. there is.

The fixing unit (200, 200a) is made up of a plurality of blocks, and each block is coupled at the upper part of the chuck body (100, 100a), and can fix the fixing object by tightening it in a sliding manner. Specifically, the fixing unit (200, 200a) is capable of fixing the fixing object by tightening it by combining a plurality of blocks divided into pieces. Each block is combined and connected to the chuck body (100, 200) through the jaws (210, 210a). It is fixed while being seated in the openings 110, 110a of 100a), so that the object to be fixed can be stably fixed to the lathe chucks 10, 10a.

The fixing unit (200, 200a) may include jaws (210, 210a), clump blocks (220, 220a), sliding blocks (230, 230a), and fixing blocks (240, 240a).

The jaws (210, 210a) are coupled in a sliding manner through the openings (110, 110a) of the chuck bodies (100, 100a) to grip or release the grip of the fixed object. Specifically, the jaws (210, 210a) are manufactured in a shape corresponding to the openings (110, 110a) formed in the chuck body (100, 100a) and are detachably coupled through the openings (110, 110a), and have grooves, etc. at the top. This can be formed and gripped through the groove to facilitate separation from the openings 110 and 110a.

The jaws (210, 210a) are formed in a square block shape corresponding to the openings (110, 110a) and the jaw coupling portions (222, 222a) of the chuck body (100, 100a) to which the clump blocks (220, 220a) are coupled. You can. The shapes of the jaws (210, 210a), the openings (110, 110a) of the chuck body (100, 100a), and the jaw coupling portions (222, 222a) are not limited to square shapes and can be manufactured in various shapes such as a three-dimensional circle. .

The clump blocks (220, 220a) are coupled to the openings (110, 110a) at the upper part of the chuck body (100, 100a), and the jaws (210, 210a) can be detachably coupled to each other.

The clump blocks (220, 220a) may include jaw coupling portions (222, 222a) and connection unit receiving portions (224, 224a).

The jaw coupling portions 222 and 222a are formed on one side in a shape corresponding to the openings 110 and 110a, and the jaws 210 and 210a can be coupled thereto.

The connection unit receiving portions (224, 224a) are formed in a shape corresponding to the connection units (300, 300a) on the other side, and coupling protrusions (226, 226a) may be formed so that the connection units (300, 300a) can be separated. .

The connection unit receiving portions 224 and 224a of the clump blocks 220 and 220a may be formed in a hemisphere or square shape. Specifically, the connection unit receiving portions (224, 224a) are manufactured in a shape corresponding to the clump block coupling portions (310, 310a) and can be custom-coupled to the clump block coupling portions (310, 310a). The clump block coupling parts (310, 310a) can be manufactured in various shapes such as hemispheres, squares, or triangles, and correspondingly, the connection unit receiving parts (224, 224a) are also manufactured in corresponding shapes, respectively, to form the connecting unit receiving parts (224). , 224a) and the clump block coupling portions 310 and 310a, the friction force can be improved to firmly fix the fixed object.

The sliding blocks (230, 230a) may be positioned on the chuck body (100, 100a) with one side facing the clump blocks (220, 220a).

The sliding blocks (230, 230a) may include connection unit coupling protrusions (232, 232a) and fixed block mounting portions (234, 234a).

The connection unit coupling protrusions (232, 232a) are formed to protrude on one side and can be inserted into the connection units (300, 300a).

The fixed block mounting portions (234, 234a) may be mounted on the fixed blocks (240, 240a) while forming the other side.

Specifically, the sliding blocks (230, 230a) are interposed between the sliding block coupling portions (320, 320a) and the fixed blocks (240, 240a) to secure the connecting units (300, 300a) to the fixed units (200, 200a). In this case, it is possible to act as a buffer against the pressure applied to the fixing blocks (240, 240a) and the sliding block coupling portions (320, 320a), respectively, so that the fixing object can be fixed in the chuck (10, 10a) while making precise and fine adjustments. I can help you do it.

The fixing blocks (240, 240a) can be fixed while supporting the other side of the sliding block (230, 230a) on the chuck body (100, 100a). Specifically, the fixing block (240, 240a) is located on the opposite side of the jaw (210, 210a) and can provide fixing force by supporting the fixed object tightened by the jaw (210, 210a) from the opposite side.

The connecting units 300 and 300a may be interposed between the plurality of blocks of the fixing units 200 and 200a to connect the plurality of blocks.

The connection units 300 and 300a may include clump block coupling portions 310 and 310a and sliding block coupling portions 320 and 320a.

The clump block coupling portions 310, 310a are coupled to the clump blocks 220, 220a, and insertion holes 330, 330a into which the fixing object is inserted are formed, and a first coupling hole corresponding to the coupling protrusions 226, 226a is formed. 312, 312a, not shown) may be formed on one side.

The clump block coupling portions 310 and 310a of the connection units 300 and 300a may be formed in a hemispherical shape corresponding to the connection unit receiving portions 224 and 224a. Specifically, the clump block coupling portions (310, 310a) of the connection units (300, 300a) correspond to the shape of the connection unit accommodation portions (224, 224a) to improve adhesion with the connection unit accommodation portions (224, 224a). It can be manufactured in various shapes, such as hemispherical, square, or triangular.

The connection units (300, 300a) may vary in length from the clump block coupling portions (310, 310a) to the sliding block coupling portions (320, 320a) in accordance with the size of the fixed object. Specifically, referring to FIGS. 4 and 5, the chuck 10a is connected from the clump block coupling portion 310a of the connection unit 300a to the sliding block coupling portion 320a for fixing objects of various shapes and sizes. It is possible to fix objects by varying the length according to the shape and size of various objects.

The sliding block coupling portions 320 and 320a may have second coupling holes 322 and 322a formed on the other side of the clump block coupling portions 310 and 310a, respectively, and corresponding to the connection unit coupling protrusions 232 and 232a.

The chucks 10 and 10a according to an embodiment of the present invention may further include a cushioning material that is interposed between each component or block to provide adhesion and alleviate shock applied from the outside. The cushioning material can be made using synthetic resin with excellent durability and elasticity. Types of synthetic resins include Teflon, phenol resin, polyurethane resin, polyamide resin, acrylic resin, urea/melamine resin, and silicone resin.

Specifically, the cushioning material is the opening (110, 110a) and jaw (210, 210a) of the chuck body (100, 100a), jaw (210, 210a) and jaw coupling portion (222, 222a), and connection unit receiving portion (224), respectively. , 224a) and clump block coupling portions (310, 310a), sliding blocks (230, 230a) and sliding block coupling portions (320, 320a), sliding blocks (230, 230a) and fixed blocks (240, 240a), etc. By treating them with a sealing material or tape, the adhesion and layering power can be improved when combining them.

Teflon is a polytetrafluoroethylene fiber with excellent chemical resistance, heat resistance, and hydrophobicity. It is a fiber made of polytetrafluoroethylene (PTFE) obtained through addition polymerization of tetrafluoroethylene.

According to one embodiment of the present invention, the chuck (10, 10a) uses the jaws (210, 210a) and sliding blocks (230, 230a) to tighten or open the fixed object in a sliding manner with the fixed object in between, thereby adjusting the size of the fixed object. It can be adjusted and fixed accordingly.

Additionally, according to one embodiment of the present invention, fixing objects of more diverse shapes and sizes can be fixed by changing the size or shape of the clump blocks (220, 220a) and the connection units (300, 300a).

A detailed description of preferred embodiments of the invention disclosed above is provided to enable any person skilled in the art to make or practice the invention. Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use each configuration described in the above-described embodiments by combining them with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit reference relationship in the patent claims can be combined to form an embodiment or included as a new claim through amendment after filing.

10, 10a: chuck
100, 100a: Chuck body
110, 110a: opening
200, 200a: Fixed unit
210, 210a: Joe
220, 220a: Clump block
222, 222a: jaw coupling portion
224, 224a: Connection unit receiving portion
226, 226a: combining protrusion
230, 230a: sliding block
232, 232a: Connection unit coupling protrusion
234, 234a: Fixed block holder
240, 240a: Fixed block
300, 300a: Connection unit
310, 310a: Clump block coupling part
312, 312a: first coupling hole
320, 320a: sliding block joint
322, 322a: second coupling hole
330, 330a: Insertion hole

Claims (9)

In a lathe chuck installed at the end of the main axis of a lathe to grip a fixed object,
A chuck body with an opening formed in a portion;
A fixing unit made up of a plurality of blocks, each block being coupled at the top of the chuck body, and fixing the fixing object by tightening it in a sliding manner; and
A connection unit interposed between the plurality of blocks of the fixing unit to connect the plurality of blocks,
The fixed unit is,
A jaw that is slidably coupled through the opening of the chuck body to grip a fixed object or to release the grip of the fixed object;
A clump block coupled to the opening side at the top of the chuck body and to which the jaws are detachably coupled;
a sliding block positioned on the chuck body with one side facing the clump block; and
It includes a fixing block that supports and fixes the other side of the sliding block on the chuck body,
The clump block is,
A jaw coupling portion formed on one side in a shape corresponding to the opening and to which the jaws are coupled; and
It includes a connection unit receiving portion formed on the other side in a shape corresponding to the connection unit and having a coupling protrusion so that the connection unit can be separated,
The sliding block is,
A connection unit coupling protrusion protrudes from one side and is inserted into the connection unit; and
It includes a fixed block holder mounted on the fixed block while forming the other side,
The connection unit is,
A clump block coupling portion coupled to the clump block and having an insertion hole into which a fixing object is inserted and a first coupling hole corresponding to the coupling protrusion formed on one side; and
It includes a sliding block coupling part in which a second coupling hole corresponding to the connection unit coupling protrusion is formed on the other side of the clump block coupling part,
The clump block coupling part can be manufactured in a hemisphere, square, or triangular shape, and correspondingly, the connection unit receiving parts 224 and 224a are also manufactured in corresponding shapes, so that the connection unit receiving part and the clump block coupling part are formed. Improves adhesion when combined,
Teflon material is applied to the opening of the chuck body and the jaw, the jaw and the jaw coupling portion, the connection unit receiving portion and the clump block coupling portion, the sliding block and the sliding block coupling portion, and the sliding block and the fixed block, respectively. A CNC sliding chuck characterized by including a cushioning material that improves adhesion and cushioning force by treating it with a sealing material or tape.
delete delete In claim 1,
The above Joe,
A CNC sliding chuck, characterized in that it is formed in a square block shape corresponding to the jaw coupling portion and the opening of the chuck body to which the clump block is coupled.
delete delete In claim 1,
A CNC sliding chuck, wherein the connection unit receiving portion of the clump block is formed in a hemisphere or square shape.
In claim 7,
A CNC sliding chuck, wherein the clump block coupling portion of the connection unit is formed in a hemispherical shape corresponding to the connection unit receiving portion.
In claim 1,
The connection unit is a CNC sliding chuck, characterized in that the length from the clump block coupling part to the sliding block coupling part is varied according to the size of the fixed object.

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