KR20220142678A - Workpiece support device of machine tool - Google Patents

Abstract

The present invention is a workpiece support device for a machine tool for supporting a large workpiece having an accommodating part formed through or indented. The workpiece support device includes: a base unit on which the workpiece is seated; and a determination unit accommodated in the accommodating part in a state in which the workpiece is seated on the base unit, wherein the determination unit corresponds to the shape and location of one or more accommodating parts formed in the workpiece. By selectively changing the position disposed on the base unit, the workpiece is set to the base unit based on the accommodating part.

Description

Workpiece support device of machine tool

The present invention relates to a workpiece support device for a machine tool, and more particularly, to the shape and position of the receiving part so that it can perform precision machining by firmly and accurately supporting various types of large workpieces having a receiving part that is penetrated or recessed. It relates to a workpiece support device of a machine tool in which the workpiece is set in the base unit based on the receiving portion as the position of the determination unit disposed in the corresponding base unit is selectively changed.

In general, a machine tool refers to a machine used for the purpose of machining a metal/non-metal workpiece into a desired shape and size using an appropriate tool by various cutting or non-cutting methods.

Various types of machine tools, including turning centers, vertical/horizontal machining centers, door machining centers, Swiss turns, electric discharge machines, horizontal NC boring machines, CNC lathes, etc., are widely used in various industrial sites for their respective purposes.

In general, various types of machine tools currently used have an operation panel to which a numerical control (NC) or computerized numerical control (CNC) technology is applied. Such an operation panel is provided with various function switches or buttons and a monitor.

In addition, the machine tool includes a table on which the raw material, which is a workpiece, is seated and transported for processing the workpiece, a pallet for preparing the workpiece before processing, a spindle that rotates when a tool or workpiece is combined, a tailstock for supporting the workpiece, etc. during processing, a room Jingu, etc. are provided.

The workpiece, which is the processing target of the machine tool, can be broadly classified into four types. First, it is a large-scale workpiece centered on the outer shape, which means that the outer shape of the workpiece becomes an important machining surface while being a heavy-duty large-scale workpiece such as a bed.

Second, it is a small and medium-sized workpiece centered on the outer shape, for example, a small-to-medium workpiece such as a column, saddle, etc. It means that the external shape of the workpiece becomes an important machining surface.

Third, as a small and medium-sized work with an inner mold center, for example, it is a small work such as a small head, and it is provided with an accommodating part penetrating or impregnated in the work, and the part in which the accommodating part is formed becomes an important processing surface.

Fourth, as a medium-to-large work piece with an inner mold center, for example, a heavy work piece such as a large head or a rotary body, and having a receiving part penetrating or impinging into the work piece, and the part where such a receiving part is formed is important processing It means to be on the side.

In the case of setting the workpiece to the support device for precise machining of the workpiece, in the first and second cases of the above four types, the external shape is an important machining surface, so you can set the workpiece by positioning based on the external shape. Therefore, it is enough to set the workpiece by closely adhering the inner mold.

Referring to FIG. 1, in the prior art, in particular, in the fourth case (inner type center middle and large workpiece), the external shape of the workpiece 2, that is, the position at which the workpiece is seated based on the A and B surfaces in FIG. 1 is determined, and then the workpiece is supported. It was set in the device to process the workpiece.

However, in the case of a medium-to-large workpiece with an inner mold center, the position at which the workpiece is set is determined based on the outer shape (A, B) of the workpiece, even though the important machining surface is the inner shape of the workpiece, that is, the receiving part (3.4) formed on the workpiece. There was a problem in that the position of the shape of the inner mold could not be reflected.

In addition, if the inner shape of the workpiece on which the receiving part is formed, that is, the inner circumferential surface of the workpiece on which the receiving part is formed, is machined in a state where the allowance for machining of the raw material is also non-uniform (inclination), it may result in unfinished (unprocessed) or rather rough machining. As a result, there was a problem that the processing could not be performed precisely.

Republic of Korea Patent Registration No. 10-1861105

The present invention is to solve the above problems, and an object of the present invention is to set a large workpiece having a receiving part that is penetrated or depressed based on the receiving part, which is an important processing part of the workpiece, as the workpiece is set in the base unit. It performs precision machining by supporting it firmly and accurately, and selectively changes the position of the decision unit disposed on the base unit in response to the shape and position of the receiving part that is formed in various ways according to the type of the work piece, so that various kinds of work pieces can be conveniently and accurately processed. It is to provide a workpiece support device of a machine tool that can be supported in a position to increase the work efficiency of the operator and minimize the non-working time.

In order to achieve the object of the present invention, the workpiece support device for a machine tool according to the present invention is a workpiece support device for a machine tool for supporting a large workpiece having a receiving portion formed through or recessed, wherein the workpiece support device includes: a base unit on which the workpiece is seated; and a determination unit accommodated in the accommodating part in a state in which the workpiece is seated on the base unit, wherein the determining unit is disposed on the base unit in correspondence with the shape and position of one or more accommodating parts formed in the workpiece. By selectively changing the arrangement position, it is possible to set the workpiece to the base unit based on the receiving portion.

In addition, in another preferred embodiment of the device for supporting the work piece of the machine tool according to the present invention, the determination unit may include one or more mounting portions formed on the base unit; at least one center guide unit detachably coupled to the mounting unit; and a separation prevention unit for preventing the center guide unit from being separated from the mounting unit.

In addition, in another preferred embodiment of the workpiece support device of the machine tool according to the present invention, the center guide portion, respectively, the body portion installed in the mounting portion; a vertical portion extending in a vertical direction on an upper portion of the body portion; an elevating unit inserted and installed in the vertical unit to ascend and descend along the vertical unit; an elastic part disposed between the body part and the elevating part to elastically support the elevating part; and one or more push parts that are in sliding contact with the inner circumferential surface of the workpiece on which the accommodating part is formed when the workpiece is seated on the base unit to press and support the workpiece.

In addition, in another preferred embodiment of the work support device of the machine tool according to the present invention, the push unit, respectively, one side of the sliding unit pivotally coupled to the vertical portion; And one side is pivotally coupled to the sliding unit and the other side is pivotally coupled to the elevating unit, and a connection unit for elevating and lowering the elevating unit in conjunction with the turning operation of the sliding unit.

In addition, in another preferred embodiment of the device for supporting the work piece of the machine tool according to the present invention, the base unit comprises: a base portion; Rotate portion rotatably coupled to the base portion; and a stopper part for limiting the rotation angle of the rotate part.

In addition, in another preferred embodiment of the workpiece support device of the machine tool according to the present invention, each of the mounting portions is formed in a plurality of circular shapes in the rotator portion or is formed to extend radially based on the center of the receiving portion in the rotator portion, A coupling method between the mounting part and the body part may be changed in response to the shape of the body part.

In addition, in another preferred embodiment of the workpiece support device of the machine tool according to the present invention, when each of the mounting parts is formed in a circular shape on the rotator part, the body part of any one of a plurality of circles formed on the mounting part In a state in which the body part is inserted in a circular shape, the body part may be coupled to the mounting part by rotating the body part so that a part of the body part catches the separation preventing part.

Further, in another preferred embodiment of the workpiece support device of the machine tool according to the present invention, when each of the mounting parts is formed to extend radially with respect to the center of the receiving part in the rotating part, the body part penetrates the body part Thus, through a pin coupled to one of a plurality of fastening holes formed in the mounting unit may be coupled to the mounting unit.

In addition, in another preferred embodiment of the work support device of the machine tool according to the present invention, the stopper portion, a locking portion protrudingly formed in a portion of the rotating portion; and a pair of locking jaws extending in a parallel and vertical direction around the locking part on the base so that the locking part is caught according to the rotational direction of the rotated part.

In addition, in another preferred embodiment of the workpiece support device of the machine tool according to the present invention, the base unit, the base portion adjacent to the indicating portion and the indicating portion formed in the engaging portion to confirm the rotation angle of the rotated portion It may further include; a confirmation unit having a display unit formed in the.

In addition, in another preferred embodiment of the device for supporting the work piece of the machine tool according to the present invention, a part in contact with the work piece is formed by knurling to support or clamp the work piece, and one or more clamping parts are installed on the base unit. ; may be further included.

The workpiece support device of the machine tool according to the present invention is difficult to expect uniform quality dimensions for large workpieces having a penetrating or recessed receiving part, especially due to the causes of tilting or damage to the die during the casting process in the state of the casting raw material. In addition, as in the prior art, when determining the machining position of these raw materials based on the outer shape of the workpiece, the receiving part, which is an important processing part of the workpiece, is based on the inner shape, that is, the receiving part is over-cut or uncut, so that the problem of lowering processing precision does not occur As the workpiece is set in the base unit, there is an effect that can perform precision machining by supporting the workpiece firmly and accurately.

In addition, the workpiece support device of the machine tool according to the present invention has a structure in which the inner circumferential surface of the work in which the receiving part is formed and the sliding part of the push part are in sliding contact to press and support the work when the work in which the push part is formed with the receiving part is seated on the base unit. That is, the structure of the swinging operation of the sliding part and the connection part and the operation of the elevating part of the elevating part elastically supported by the elastic part are automatically performed. This has the effect of improving the quality of the workpiece and improving the stability and reliability of the machine tool by repeatedly performing the same quality machining.

In addition, the workpiece support device of the machine tool according to the present invention determines the position of the workpiece based on the external shape of the workpiece as in the prior art. In order to avoid wasting resources such as tool breakage due to overload or workpiece damage and the need to discard raw materials, the location is determined based on the inner shape of the workpiece where the receiving part is formed and the tool is processed at the correct location. It has the effect of reducing machining cost by preventing damage to the work piece by preventing damage to the work piece and promoting uniform machining based on the inner shape of the work piece.

Furthermore, in the work support device of the machine tool according to the present invention, the determination unit is configured in various shapes such that the center guide part has one or more push parts, for example, one push part or three push parts are formed, so that it is optimal according to the diameter of the receiving part. It can be applied to various types of accommodating parts by applying a combination of It has the effect of increasing the work efficiency of the operator by supporting various types of workpieces at precise positions.

In addition, in the workpiece support device of the machine tool according to the present invention, the part in which the clamping part for supporting or clamping the workpiece is formed by knurling is formed by knurling to increase the frictional force with the workpiece, so that vibration of the machine tool is generated during processing or It has the effect of preventing the workpiece from being pushed due to overload.

In addition, the workpiece support device of the machine tool according to the present invention has a structure in which the rotated part is rotatably coupled to the base, and the workpiece is seated on the upper part of the rotated part. It has the effect of minimizing the non-working time due to the reduction of the work-piece setting time.

1 shows a conceptual diagram for a work setting standard of a work support device of a conventional machine tool.
Figure 2 shows a workpiece mounted on the workpiece support device of the machine tool according to an embodiment of the present invention.
Figure 3 shows a perspective view of a workpiece support device of a machine tool according to an embodiment of the present invention.
4 is a perspective view illustrating a state in which the determination unit and the clamping unit are removed in FIG. 2 .
FIG. 5 shows an enlarged view of part C in FIG. 4 .
Figure 6 shows a perspective view of the center guide portion of the work support device of the machine tool according to an embodiment of the present invention.
7 is a side view of the center guide of the work support device of the machine tool according to an embodiment of the present invention.
Figure 8 shows a perspective view of the center guide part in the case of a plurality of push parts of the workpiece support device of the machine tool according to an embodiment of the present invention.
9 is a view illustrating a state in which the center guide unit is coupled to the mounting unit when the mounting unit is formed to extend radially with respect to the center of the receiving unit in the rotated unit.
10 is a view illustrating a process in which the center guide unit is coupled to the mounting unit when the mounting unit is formed in a circular shape on the rotary unit.

Hereinafter, with reference to the drawings of the workpiece support device of the machine tool according to an embodiment of the present invention will be described in detail. The embodiments introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. And in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numbers refer to like elements throughout.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be embodied in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully inform the person of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of description.

The terminology used herein is for the purpose of describing the embodiments, and therefore is not intended to limit the present invention. In this specification, the singular also includes the plural, unless specifically stated otherwise in the phrase. As used herein, “comprise” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Figure 1 shows a conceptual diagram for the work setting standards of the work support device of a conventional machine tool, Figure 2 shows a work piece mounted on the work support device of the machine tool according to an embodiment of the present invention.

Figure 3 shows a perspective view of a workpiece support device of a machine tool according to an embodiment of the present invention, Figure 4 shows a perspective view of a state in which the determination unit and the clamping unit in Figure 2 are removed.

Figure 5 shows an enlarged view of part C in Figure 4, Figure 6 shows a perspective view of the center guide portion of the workpiece support device of the machine tool according to an embodiment of the present invention.

7 is a side view of the center guide portion of the workpiece support device of the machine tool according to an embodiment of the present invention, Figure 8 is a plurality of push parts of the workpiece support device of the machine tool according to an embodiment of the present invention. In this case, a perspective view of the center guide part is shown.

9 is a view showing a state in which the center guide part is coupled to the mounting part when the mounting part is formed to extend radially with respect to the center of the receiving part in the rotating part, and FIG. It is a diagram showing the process of being coupled to the mounting part.

With reference to FIGS. 2 to 10, the workpiece support device 1 of a machine tool according to an embodiment of the present invention will be described. 2 to 10 , the workpiece support device 1 of a machine tool according to an embodiment of the present invention includes a base unit 100 , a determination unit 200 , and a clamping unit 300 .

The base unit 100 of the workpiece support device 1 of the machine tool according to an embodiment of the present invention serves to support the workpiece on which the workpiece 2 is seated, and constitutes the lower portion of the workpiece support device.

Referring to Figure 2, the workpiece (2) to be seated on the workpiece support device (1) of the machine tool according to an embodiment of the present invention can be formed in various ways, in particular, the receiving portion (3, penetrating or recessed) formed 4) provided with the inner mold center of the work 2, that is, the part where the receiving portion is formed is a work that is an important surface for processing, and is a support device for supporting a large work of high weight.

The workpiece 2 may be formed in various shapes, and the formed receiving portions 3 and 4 may also be formed in various shapes and numbers.

Specifically, the receiving portion can be divided into a large (about 280 ~ 600mm) (3) and a small (about 150 ~ 300mm) (4) in diameter, and the determination unit 200 is variously deformed according to the diameter of the receiving portion. can

3 and 4, the base unit 100 of the workpiece support device 1 of the machine tool according to an embodiment of the present invention is specifically a base portion 110, a rotate portion 120, a stopper portion ( 130 ) and a check unit 140 .

Although not shown in the drawings, the base 110 of the base unit 100 may be fixedly installed on a bed or pallet of a machine tool.

Rotate portion 120 of the base unit 100 is rotatably coupled to the base portion, the mounting portion 210 is formed on the upper portion, the center guide portion 220 and the separation prevention portion 230 is installed.

In this way, the workpiece support device of the machine tool according to the present invention has a structure in which the rotated part is rotatably coupled to the base, and the workpiece is seated on the upper part of the rotated part. It is possible to minimize the non-machining time due to the reduction of the workpiece setting time.

4 and 5 , the stopper part 130 of the base unit 100 is for limiting the rotation angle of the rotate part, and specifically includes a locking part 131 and a locking jaw part 132 .

The locking part 131 is formed to protrude from a part of the rotated part 120 , and the locking jaw part 132 is made of a pair, and is caught according to the rotational direction (ie, clockwise or counterclockwise) of the rotated part 120 . The base portion 110 is formed to extend in the vertical direction (upward direction) while parallel to the center of the engaging portion 131 so that the portion 131 is caught.

As such, the stopper part of the base unit of the workpiece support device 1 of the machine tool according to an embodiment of the present invention limits the angle at which the rotated part rotates to rotate the rotated part only within the range necessary to quickly set the workpiece based on the center line. In this way, it is possible to prevent excessive rotation of the heavy-duty workpiece, endangering the safety of the operator, or damage to the workpiece by dropping it.

4 and 5, the check unit 140 of the base unit 100 is for checking the angle at which the rotate unit 120 is rotated, and the indication unit 141 and the indication unit ( and a display unit 142 formed on the base unit 110 so as to be adjacent to the 141 .

That is, the indicator may serve as a scale, and the display may display a rotated angle or a limit line at which the rotated part can be rotated.

As such, the confirmation unit of the base unit of the work support device 1 of the machine tool according to an embodiment of the present invention displays the angle at which the rotated unit is rotated or the limit line that can be rotated to prevent the operator from excessively rotating the rotated unit in advance This can improve work convenience.

The determination unit 200 of the workpiece support device 1 of the machine tool according to an embodiment of the present invention is accommodated in the receiving portions 3 and 4 in a state in which the workpiece 2 is seated on the base unit 100 .

3 to 10 , the determination unit 200 specifically includes a mounting unit 210 , a center guide unit 220 , and a separation prevention unit 230 .

The mounting portion 210 of the determination unit 200 may be formed of one or more, that is, one or a plurality of the base unit 100, and is a portion coupled to the center guide portion.

Although not necessarily limited thereto, the mounting part 210 may be recessed in the rotated part 120 or formed to protrude into the rotated part 120 to accommodate the body part 221 of the center guide part 220 .

The center guide part 220 of the determination unit 200 may be made of one or more, that is, one or a plurality, and is detachably coupled to the mounting part 210 .

That is, the center guide part 220 is selected from among the plurality of mounting parts 210 so that it can be accurately accommodated in accordance with the center (D) of the accommodating part according to the shape of the accommodating parts 3 and 4 of the work, particularly the diameter or the formed position of the accommodating part. It may be inserted and coupled to the mounting unit 210. It may be linearly reciprocated along the mounting unit 210 rule.

Specifically, the center guide part 220 includes a body part 221 , a vertical part 222 , an elevating part 223 , an elastic part 224 , and a push part 225 .

The body part 221 is installed in the mounting part 210 and is a lower part of the center guide part, and the vertical part 222 is formed extending in the vertical direction (Z-axis direction in FIGS. 6 to 8 ) on the upper part of the body part 221 . become a pillar.

In addition, the elevating part 223 is inserted and installed in the vertical part 222 to elevate along the vertical part 222 , and the elastic part 224 is disposed between the body part 221 and the elevating part 223 to elevate and descend. It serves to elastically support the steel portion 223 . The elastic part may be installed to accommodate the vertical part, or may be separately installed outside the vertical part.

The push part 225 may be made of one or more, that is, one or a plurality of pieces, and when the workpiece 2 is seated on the base unit 100 , the receiving parts 3 and 4 are formed of the workpiece 2 . It is in sliding contact with the inner circumferential surface and serves to press and support the workpiece (2).

The push unit 225 is pivotally coupled to the sliding part 226 with one side pivotally coupled to the vertical part 222 and the sliding part 226 on one side to be pivotally coupled to the sliding part 226 on one side, and the other side is pivotable to the elevating part 223, respectively. It is coupled to include a connection portion 227 for elevating and lowering the elevating unit 223 in conjunction with the turning operation of the sliding unit 226.

The separation prevention unit 230 of the determination unit 200 may be formed of one or more, that is, one or a plurality, and is to prevent the center guide unit 220 from being separated from the mounting unit 210 .

3, 4, 9 and 10, the separation prevention part 230 is installed to cover a part of the mounting part 210, and the body part 221 of the center guide part 220 is attached to the mounting part 210. When accommodated in the body portion is formed to be caught by the separation preventing portion to prevent separation from the mounting portion.

The determination unit 200 of the workpiece support device 1 of the machine tool according to an embodiment of the present invention corresponds to the shape and position of one or more receiving portions 3 and 4 formed in the workpiece 2, the base unit By selectively changing the position to be disposed on ( 100 ), the workpiece ( 2 ) can be set in the base unit ( 100 ) based on the receiving parts ( 3 , 4 ).

That is, one or more accommodating parts 3 and 4 formed in the workpiece 2 can be divided into a case of large diameter and a case of small diameter as described above, and in this case, the coupling method of the center guide part and the mounting part to be described later The center guide part is accommodated in the center (D) of the receiving part through the center guide part, and the push part of the center guide part uniformly presses the inner circumferential surface of the workpiece where the receiving part is formed, and the workpiece 2 based on the receiving parts 3 and 4 is the base unit 100. can be set to

Referring to FIGS. 3, 6, 7, and 9, specifically, for example, when the diameter of the receiving part is large (about 280 to 600 mm) (3), a center guide having one push part 225 is provided. Three are arranged equally spaced apart by 120 ° to the mounting portion 212 formed radially based on the center (D) of the additional accommodation portion, these three center guide portions can all be accommodated in the accommodation portion (3).

In this case, as will be described later, by conveniently changing the positions of the three center guide parts, the sliding part of the push part of each center guide part is placed in contact with the inner peripheral surface of the work in which the accommodating part is formed to elastically press the inner peripheral surface of the work in which the accommodating part is formed. can

Referring to FIGS. 3 and 8 and 10 , specifically, for example, when the diameter of the receiving part is small (about 150 to 300 mm) (4), the push part 225 is 3 for each one receiving part 4, respectively. One center guide unit provided each may be accommodated, and the center guide unit may be mounted on the mounting unit 211 formed in a circular shape.

In this case, as will be described later, the position of the center guide part is conveniently changed and the sliding parts of the three push parts of the center guide part are arranged to be in contact with the inner peripheral surface of the work in which the accommodating part is formed, so that the inner peripheral surface of the work in which the accommodating part is formed can be elastically pressed. .

As such, the workpiece support device of the machine tool according to the present invention is a large workpiece having a penetrating or recessed receiving part, especially in the state of the casting raw material, in the casting manufacturing process, due to the causes of tilting or damage to the wooden die. In addition, as in the prior art, when determining the machining position of these raw materials based on the outer shape of the workpiece, the receiving part, which is an important processing part of the workpiece, does not have a problem that the processing precision is deteriorated due to the inner shape, that is, the receiving part is over-cut or under-cut. As a reference, as the workpiece is set in the base unit, it is possible to perform precision machining by firmly and accurately supporting the workpiece.

In addition, each mounting portion 210 of the determination unit 200 of the workpiece support device 1 of the machine tool according to an embodiment of the present invention is formed in a plurality of circular 211 in the rotator portion 120 or a rotator portion ( 120 may be formed to extend radially with respect to the center (D) of the receiving portion (212).

In addition, the body part 221 of the center guide part 220 selectively coupled to each mounting part 210 is changed in a coupling method of the mounting part 210 and the body part 221 corresponding to the shape of the mounting part 210 . can be

Referring to FIG. 10 , a case in which the mounting part 210 is formed in a circular shape 211 on the rotator part 120 will be described. (For example, when the diameter of the receiving part is small (about 150 ~ 300mm) (4) can be applied.)

When each mounting part 210 is formed in a circular shape 211 in the rotator part,

The mounting part is formed in a circular shape 211, and as described above, a part of the mounting part is covered by the separation preventing part.

In this case, the shape of the body part is formed to correspond to the shape of the part except for the part covered by the separation preventing part from the shape of the mounting part.

Therefore, when the body part 221 is rotated in a state in which the body part 221 is inserted into any one of a plurality of circles formed in the mounting part 211, a part of the body part 221 is separated. It is caught by the prevention unit 230 .

As such, when each mounting part 210 is formed in a circular shape 211 in the rotator part 120, the body part 221 is inserted into the mounting part in the vertical direction and then rotated to conveniently attach and detach the body part to the mounting part. can

In addition, it is possible to conveniently change the position of the center guide part so that the center guide part is located at a desired position by attaching and detaching the mounting part to any one or more of the plurality of mounting parts 211 selected from among the mounting parts.

Referring to FIG. 9 , a case in which the mounting part 212 is formed to extend radially from the center D of the receiving part to the rotator part 120 will be described. (For example, if the diameter of the receiving part is large (about 280 ~ 600mm) (3) can be applied.)

When each mounting portion 212 is formed to extend radially with respect to the center (D) of the receiving portion in the rotator portion 120,

The mounting part is formed to extend radially with respect to the center (D) of the receiving part, and as described above, a part of the mounting part is covered by the separation preventing part.

In this case, the body portion 221 has a stepped portion 2211 formed to be stepped, and the shape of the body portion is formed in a shape corresponding to the shape of the mounting portion.

That is, the body portion is in a state in which it is not separated by the separation preventing unit in the received state while being inserted into the mounting portion extending radially with respect to the center (D) of the receiving portion.

In this state, when the body part 221 is linearly moved along the mounting part 212, the position of the center guide part may be changed.

In addition, the body part 221 may be coupled to the mounting part through a pin 214 that passes through the body part 221 and is coupled to one of the plurality of fastening holes 213 formed in the mounting part 210 .

That is, the body part is conveniently coupled to the mounting part by moving the body part linearly along the mounting part to a desired position and then inserting the pin 214 through the through hole 2212 formed in the body part and the fastening hole 213 formed in the mounting part. can do it

As described above, when each mounting portion 212 is radially extended with respect to the center D of the receiving portion 212, the pin ( 214) by inserting or removing the body part can be conveniently detachably coupled to the mounting part.

In addition, when each mounting part 212 is radially extended with respect to the center (D) of the receiving part (212), the body part 221 is inserted into the mounting part and then the body part 221 is installed along the mounting part 212. By moving in a straight line, the position of the center guide can be conveniently changed so that the center guide is positioned at a desired position as needed.

As such, in the workpiece support device of the machine tool according to the present invention, when each mounting part is formed in a circular shape in the rotator part, the body part is inserted into the mounting part in the vertical direction and then rotated. , when the mounting part is formed to extend radially with respect to the center of the receiving part, when it is formed in the body part, the body part can be conveniently attached and detached to the mounting part by inserting or removing a pin through a through hole and a fastening hole formed in the mounting part. .

In addition, when each mounting part is formed in a circular shape on the rotator part, the location of the center guide part can be conveniently changed so that the center guide part is located at a desired position by attaching and detaching the mounting part to at least one of the selected mounting parts among the plurality of mounting parts. In the case where the mounting part is formed to extend radially with respect to the center of the receiving part, if it is formed in the body part, the body part is inserted into the mounting part and then the body part is moved linearly along the mounting part so that the center guide part is conveniently located at a desired position as needed. The position of the center guide part can be changed.

One or more clamping parts 300 of the workpiece support device 1 of the machine tool according to an embodiment of the present invention may be installed. For supporting or clamping the work piece, a portion that comes into contact with the work piece may be formed by knurling.

As described above, in the workpiece support device of the machine tool according to the present invention, the part in which the clamping part for supporting or clamping the workpiece is formed by knurling processing to increase the frictional force with the workpiece, thereby generating vibration of the machine tool during processing or overloading. This can prevent the workpiece from being pushed.

An operating principle of the workpiece support device 1 of a machine tool according to an embodiment of the present invention will be described. First, a process in which the workpiece 2 is seated on the workpiece support device will be described.

When the workpiece is moved from the top to the bottom in order to seat the workpiece 2 on the base unit 100, the sliding part 226 comes into contact with the receiving parts 3 and 4 of the workpiece 2 and the sliding part 226. is turned downward.

When the sliding part 226 is pivoted in the downward direction, the connecting part 227 is also rotated in conjunction with the turning operation of the sliding part 226 to lower the elevating part 223 connected to the connecting part 227 .

When the elevating unit 223 descends, the elevating unit 223 presses the elastic unit 224, so that the elastic force of the elastic unit 224 pressing the elevating unit 223 upward acts on the sliding unit.

Through this, the receiving parts 3 and 4 of the workpiece 2 are firmly and elastically supported by the sliding part 226, so that the workpiece can be firmly and accurately supported by setting the workpiece to the base unit based on the receiving part. .

Next, if the process in which the workpiece 2 is removed from the workpiece support device will be described, the process in which the workpiece is seated is reversed.

As such, the workpiece support device of the machine tool according to the present invention has a structure in which the inner circumferential surface of the work in which the receiving part is formed and the sliding part of the push part are in sliding contact to press and support the work when the work in which the push part is formed with the receiving part is seated on the base unit. , the structure of the swinging operation of the sliding part and the connection part and the operation of the elevating part elastically supported by the elastic part is automatically performed. By repeatedly performing machining, it is possible to improve the quality of the workpiece and improve the stability and reliability of the machine tool.

In the detailed description of the present invention described above, although it has been described with reference to preferred embodiments of the present invention, those skilled in the art or those having ordinary skill in the art will It will be understood that various modifications and variations of the present invention can be made without departing from the spirit and scope of the present invention. Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1: Workpiece support device of machine tool
2: Workpiece
3: Receiving part with a large diameter of the workpiece
4: Receiving part with a small diameter of the workpiece
100: base unit
110: base part
120: Rotate part
130: stopper part
140: confirmation unit
200: decision unit
210: mounting part
220: center guide unit
230: escape prevention part
300: clamping part

Claims (11)

In the workpiece support device of a machine tool for supporting a large workpiece having a receiving portion formed through or recessed,
The workpiece support device,
a base unit on which the workpiece is seated; and
and a determination unit accommodated in the accommodating part in a state in which the workpiece is seated on the base unit.
The determination unit sets the work piece to the base unit based on the receiving unit by selectively changing the position disposed on the base unit in response to the shape and position of the one or more receiving units formed on the work piece. A work-piece support device of a machine tool.
According to claim 1,
The decision unit is
one or more mounting portions formed on the base unit;
at least one center guide unit detachably coupled to the mounting unit; and
A workpiece support device for a machine tool comprising a; a separation preventing portion for preventing the center guide portion from being separated from the mounting portion. 3. The method of claim 2,
Each of the center guide parts,
a body part installed on the mounting part;
a vertical portion extending in a vertical direction on an upper portion of the body portion;
an elevating unit inserted and installed in the vertical unit to ascend and descend along the vertical unit;
an elastic part disposed between the body part and the elevating part to elastically support the elevating part; and
When the workpiece is seated on the base unit, one or more push parts are in sliding contact with the inner circumferential surface of the workpiece on which the accommodating part is formed to press and support the workpiece.
4. The method of claim 3,
Each of the push units,
a sliding part having one side pivotally coupled to the vertical part; and
One side is pivotally coupled to the sliding unit and the other side is pivotably coupled to the elevating unit, and a connection unit for elevating and lowering the elevating unit in conjunction with the turning operation of the sliding unit. Workpiece support. 5. The method of claim 4,
The base unit is
base part;
Rotate portion rotatably coupled to the base portion; and
and a stopper part for limiting the rotation angle of the rotate part.
6. The method of claim 5,
Each of the mounting parts is formed in a plurality of circles in the rotator part or is formed to extend radially with respect to the center of the receiving part in the rotator part,
The body portion is a workpiece support device for a machine tool, characterized in that the coupling method of the mounting portion and the body portion is changed in response to the shape of the mounting portion.
7. The method of claim 6,
When each of the mounting parts is formed in a circular shape on the rotator part,
The body part is coupled to the mounting part by rotating the body part in a state in which the body part is inserted into any one of a plurality of circles formed in the mounting part so that a part of the body part catches the separation preventing part. A workpiece support device of a machine tool, characterized in that
7. The method of claim 6,
When each of the mounting parts is formed to extend radially with respect to the center of the receiving part in the rotating part,
The body portion penetrates through the body portion and is coupled to the mounting portion through a pin coupled to one of a plurality of fastening holes formed in the mounting portion.
5. The method of claim 4,
The stopper part,
a locking portion protruding from a portion of the rotating portion; and
A work support device for a machine tool comprising a; a pair of locking jaws extending in a vertical direction while parallel to the center of the locking part on the base so that the locking part is caught according to the rotational direction of the rotating part.
10. The method of claim 9,
The base unit is
In order to confirm the rotation angle of the rotating part, a confirmation part having an indication part formed on the locking part and a display part formed on the base part so as to be adjacent to the indication part; .
According to claim 1,
In order to support or clamp the work piece, a part in contact with the work piece is formed by knurling, and at least one clamping unit is installed on the base unit.

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