KR102075307B1 - Burr removing apparatus for cast core - Google Patents

Abstract

The present invention relates to a deburring device for a cast core, which is to remove burrs from a cast core formed of a caster as a raw material. According to the present invention, the deburring device for a cast core, which is to remove burrs from the cast core, comprises: a table to which the cast core is fixed; a forward and backward moving device moving the table forward and backward; a cast core processing head installed in the upper part of the table and deburring the cast core by including a cast core processing tool; a horizontal moving tool moving the cast core processing head in the horizontal direction; a vertical moving tool moving the cast core processing head in the vertical direction; and a control unit controlling a movement of the forward and backward moving device, the cast core processing tool, the horizontal moving tool, and the vertical moving tool. According to the present invention, the deburring device for a cast core can accurately remove the burr along the surface shape of the cast core by the processing head as the processing head freely and relatively move to the cast core in accordance with a predetermined program in the forward and backward directions, the horizontal direction, and the vertical direction. Therefore, the deburring device for a cast core can accurately and rapidly remove burrs even if the cast core is middle-sized or large-sized with a complex shape. Also, according to the present invention, the deburring device for a cast core includes multiple processing heads on a moving shaft and removes burrs from multiple cast cores at once. So, the deburring device for a cast core can largely improve efficiency and work productivity.

Description

Middle Character Mapping Device {BURR REMOVING APPARATUS FOR CAST CORE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core drawing apparatus for removing burrs from a casting core made of cast sand as a raw material.

The casting core refers to a mold which is manufactured separately from the mold to be inserted into the hollow part of the mold in order to make the hollow part of the casting, and the upper mold and the lower part are made using core sand as a raw material. It is molded by injecting molding sand into the molding space between the molds.

The middle part usually has a burr along the boundary between the upper and lower molds, that is, a portion or an edge where the middle part is about 1/2 vertically. If burrs remain on the edges or divided surfaces of the core, the gaps are likely to occur when the cores are divided and fabricated. In addition, injecting molten metal into the mold causes the casting internal shape not to be molded as designed, resulting in deterioration of casting dimensional stability and shape conformity, resulting in defective products.

On the other hand, in the past, there has been an apparatus for deburring mainly cast and completed castings, but few apparatuses for removing the burr of the casting core inserted into the casting. Therefore, many workers manually map the middle man with the finishing tool, and a considerable amount of time and manpower are consumed, resulting in inefficiency. Moreover, it was very difficult to completely remove the burrs from the inner wall of the same portion as the vertical through holes formed in the core.

As described above, it is common to manually map cores as in Patent Literature 1, and there are very few devices that directly map cores mechanically.

The core filament of Patent Literature 1 includes a filament part in which a plurality of burr removal balls are sewn in a line and suspended a plurality of hanging core filament strings vertically in a predetermined space, and a core in which the middle core is located below the filament part. And a standby frame and an air blower for firing compressed air into the core while being reciprocally driven horizontally with respect to the frame. The core fender can be driven up and down with the filament part and the core waiting part frame so that the middle part is passed through the core fender line and the air blower is compressed and the air blower blows compressed air and remains in the core. The role is to shake off.

However, the above-described middle casualties have the following problems.

First, since the middle core is driven up and down with respect to the finishing unit only and cannot be moved to the left and right or back and forth, there is a limit in finishing the complex inner channel shape of the complex core or core.

Second, since the middle and the middle are driven up and down in a number of core finishing lines, there is a possibility of finishing unevenly to the part where burrs are not formed, and the normal shape of the core may be damaged. There was a high possibility that the stability would be impaired.

Third, the simple motion of the filament part being vertically driven in a plurality of core filamentous strings, in particular, was difficult to remove finer burrs such as vertical through-holes.

Patent Document 1: Registration Utility Model Publication No. 20-0485885 (March 2, 2018)

The present invention has been made to solve the above problems, even if the core and the processing head can move relative to each other freely in the front, rear, left and right directions according to the program, even if the middle or large core having a complex shape An object of the present invention is to provide an intermediate magnetic finishing apparatus capable of quickly and precisely finishing machining.

It is another object of the present invention to provide a core finishing apparatus having a multi-processing head which can easily map a plurality of cores at once and greatly improve productivity and efficiency.

The core mapping device of the present invention for solving the above problems,

In the middle magnetic finishing apparatus for finishing the middle core,

The table in which the middle is fixed,

A front and rear movement mechanism for moving the table in the front and rear directions,

Located in the upper portion of the table, having a core machining tool for finishing the core core machining process,

A horizontal movement mechanism for moving the core processing head in a horizontal direction;

Shanghai copper mechanism for moving the core processing head in the vertical direction,

It comprises a control unit for controlling the movement of the front and rear movement mechanism, the core processing head, the left and right movement mechanism and the Shanghai moving mechanism.

The core drawing apparatus of a preferred embodiment of the present invention includes a left and right moving member in which the left and right moving mechanism moves left and right by the power of a driving source,

The Shanghai moving mechanism is coupled to the left and right moving members to move left and right according to the movement of the left and right moving members,

The core processing head is coupled to the vertical movement member provided in the Shanghai moving mechanism is characterized in that it can move up and down as the vertical movement member moves up and down according to the operation of the Shanghai moving mechanism.

In another preferred embodiment of the present invention, the shandong copper mechanism is provided with a left and right extending frame extending in the left and right direction and coupled to the front of the vertical movement member,

A plurality of core processing heads are coupled side by side along the left and right extension frames in order to process a plurality of cores.

According to the present invention, the processing head can move relative to each other freely according to a preset program in the front-back direction, the left-right direction and the vertical direction with respect to the core. Even the middle person and the large person have the effect of quickly and accurately mapping.

In addition, since the core drawing apparatus of the present invention can include a plurality of processing heads on one moving shaft to map a plurality of cores at once, there is an effect of greatly improving work productivity and efficiency.

1 is a front view of the core mapping device of an embodiment of the present invention.
FIG. 2 is a side view of the core mapping device of FIG. 1.
3 is a front view of the core mapping device of another embodiment of the present invention.
4 is a side view of the core mapping device of FIG. 3.
FIG. 5 is a device photograph showing an actual configuration of the core mapping device of FIG.

Hereinafter, the detailed configuration of the present invention will be described in detail with reference to the accompanying drawings and examples. The embodiments described below are shown by way of example in order to facilitate understanding of the present invention, and also, the accompanying drawings may be exaggerated in some of the dimensions of the components rather than shown to scale. have.

1 is a front view of the core mapping device of an embodiment of the present invention, Figure 1 is a side view of the core mapping device of FIG.

As shown in the drawing, the core drawing apparatus 100 of the present invention includes a table T on which the core 1 is fixed, a back and forth moving mechanism 10 for moving the table T in the front and rear directions, and the table. (T) located in the upper portion and having a core machining tool 42, the core machining head 40 for finishing the core 1, and the left and right moving mechanism for moving the core machining head 40 in the left and right direction 20, the shank moving mechanism 30 for moving the core machining head 40 in the up and down direction, and the forward and backward moving mechanism 10, the middle machining head 40, the left and right moving mechanism 20, and the shanghai movement. It is configured to include a control unit 110 for controlling the movement of the instrument (30).

The core 1 is firmly fixed by the fixing jig 20 on the table T located in the apparatus body frame. Although the core mapping device of the present invention is convenient for processing a plurality of cores 1, only the device for processing one core 1 is shown in the embodiment of FIG.

For convenience of description, in the present specification, the left and right directions are defined by the horizontal arrows shown in the drawings, the up and down directions are defined by the vertical arrows shown in the drawings, and the front and rear directions are defined by the directions toward the front and back of the drawings.

The front and rear movement mechanism 10 for moving the table T in the front and rear direction includes a drive motor 12 (see side view in FIG. 2) for the front and rear movement, and a connecting member 13 below the table T. It includes a front and rear extension ball screw 11 coupled to the table (T) through, the table T is rotated by the rotation of the front and rear extension ball screw 11 by the rotation of the front and rear drive motor (12). It is to be moved forward and backward. The front and rear direction extending ball screw 11 is coupled to the apparatus body frame by the coupling member 11a at the front end, and is coupled to the apparatus body frame by the other coupling member 11b at the rear end and at the same time, the front and rear movement drive motor 12. Combined with power transmission. The connecting member 13 may be a ball nut coupled to the ball screw 11, or may collectively refer to a general mechanical series of coupling members connecting the ball nut and the table T.

The front and rear movement mechanism 10 may also include a front and rear extension LM guide (not shown) installed on at least one side, that is, one side or both sides of the front and rear extension ball screw 11. The front and rear extension LM guides are slidable with the table T on both sides of the front and rear extension ball screws 11 to assist stable movement when the table T moves in the front and rear directions by the rotation of the ball screw 11. Guide member to be coupled. In FIG. 1 and FIG. 2, since the said front-back direction extension LM guide is covered by the guide cover mentioned later, it is not expressed on drawing.

When the core 1 is subjected to finishing processing, debris or debris of the processed burr may fall below the table T, and when the debris accumulates, it may affect the operation of the front and rear movement mechanism 10. In this embodiment, in order to protect the back and forth movement mechanism 10 from the burr debris, a guide cover 14 covering the upper portion of the front and rear extension LM guide is provided. Since the guide cover 14 has a bellows shape, the guide cover 14 can expand and contract in the front and rear directions according to the movement of the table T. Accordingly, the guide cover 14 can effectively protect the front and rear extension LM guides while following the operation of the front and rear movement mechanism 10. .

In the upper portion of the table (T), a core machining head 40 for finishing machining the core 1 is provided. At the lower end of the core machining head 40, a core machining tool 42, which mirrors the core, is attached via a tool chuck, and at the top, a spindle rotation motor which is a power source for rotating the core machining tool 42 at a constant speed. (9) is assembled. Since the spindle assembly for processing the workpiece with a processing tool such as a rotary blade by the rotational force of the motor is generally known, a detailed description thereof will be omitted. However, the present invention is not to process the castings themselves, such as metal products, but to process the core made of a softer material, such as foundry sand, so that the range of parameters set at the time of processing such as rotational force, cutting force, rotational pressure, etc. You must decide. These parameter values are determined through numerous experiments and input into the mapping device of the present invention.

The characteristic point of the core drawing device 100 of the present invention is combined with the left and right moving mechanism 20 for moving the core processing head 40 to the left and right and the Shanghai moving mechanism 30 for moving up and down, so that the core processing The head 40 can be moved freely in association with the left and right and up and down directions. As a result, more detailed finishing processing is achieved in connection with the middle core 1 moving freely up and down, left and right, and the middle core 1 moving back and forth.

In this embodiment, the left and right moving mechanism 20 has a left and right moving member to move left and right by the power of the drive source, the Shanghai moving mechanism 30 is coupled to the left and right moving member to move the left and right moving members. You can move left and right according to.

On the other hand, the core processing head 40 is coupled to the vertical movement member provided in the Shanghai moving mechanism 30 can move up and down as the vertical movement member moves up and down according to the operation of the Shanghai moving mechanism (30). have.

The left and right moving mechanism 10 according to the present embodiment includes a left and right moving drive motor 22 as a driving source, a left and right extending ball screw 21 coupled to the left and right moving drive motor, and the left and right extending ball screw 21. The left and right moving members 23 are coupled to each other, and the left and right direction extending ball screws 21 are installed and are configured to include left and right guide frame bodies 24 extending in the left and right directions. The left and right moving members 23 are coupled to the front of the left and right guide frame body 24 so as to slide left and right along the left and right guide frame body 24 by the rotation of the left and right extending ball screws 21. It is a sliding member.

The left and right moving drive motor 22 is coupled to one end of the left and right guide frame body 24 and connected to the left and right extending ball screws 21 through a power transmission module (not shown). Since the left and right guide frame body 24 is installed long to the left and right, the fixed frame 50 coupled to the frame of the apparatus main body 100 is coupled to the rear left and right guide frame body 24 in order to stably support the load. do. In addition, a connecting frame 51 is installed on the upper left and right guide frame body 24, and the other end of the connecting frame 51 is coupled to the fixed frame 50 to support the left and right guide frame body 24.

The shanghai copper mechanism 30 of the core processing head 40 includes a shanghai copper drive motor 30 as a driving source, a vertically extending ball screw 31 coupled to the shanghai copper drive motor 30, and the up and down direction. The vertical movement member 33 coupled to the extension ball screw 31 and the vertical extension ball screw 31 are provided with a vertical guide frame body 34 extending in the vertical direction.

The vertical movement member 33 is coupled to the front of the upper and lower guide frame body 34 and vertically slides along the upper and lower guide frame body 34 by the rotation of the upwardly extending ball screw 31. It is a sliding member. The vertical sliding member 33 is coupled by a ball nut (not shown) coupled to the vertically extending ball screw 31 and the connecting member 33a, by the rotation of the vertically extending ball screw 31. It can slide up and down.

On the other hand, the above-described left and right moving member 23 is also mechanically coupled to the ball nut (not shown) coupled to the left and right extending ball screw 21 can be slid left and right.

Since the above-described core processing head 40 is coupled to the vertical sliding member 33, the core processing head 40 moves up and down in accordance with the vertical movement of the vertical sliding member 33 to move the core 1 You can finish finishing.

In the present embodiment, the upper and lower guide frame body 34 is coupled to the left and right sliding members 23 so that the upper and lower guide frame bodies 34 may be moved left and right according to the left and right movement of the left and right sliding members 23. The core processing head 40 coupled to the vertical sliding member 33 of the upper and lower guide frame bodies 34 may also be moved left and right. In addition, since the core processing head 40 may move up and down according to the vertical movement of the vertical sliding member 33, the core processing head 40 is the left and right moving mechanism 20 and the shank moving mechanism 30 in the end. ), The burr of the core 1 can be precisely finished by moving properly up, down, left, and right.

The controller 110 according to a pre-input program, the mapping apparatus main body 100 according to a control method such as numerical control (NC), computer numerical control (CNC), PLC (Programalbe logic control), PC (Programalbe control), etc. You can map the middle character by controlling. Command input of the control unit may be performed by a touch panel, a mouse, a joystick, a keyboard, or the like. In the control unit, the operator selects various parameters such as left and right and vertical movements of the machining head, numerical values of the front and rear movement of the table, the shape factor value of the machining head, rotation speed of the machining head of the machining head, rotation speed, and various preset menus (modes) Can be controlled. When the apparatus 100 is operated by selecting a mapping menu from the input unit of the controller 110, the core processing head 40 is shaped by the left and right moving mechanism 20 and the shank moving mechanism 30 to form the surface of the core 1. Finely move the core (1) while moving along. At this time, the front and rear movement mechanism 10 of the table T on which the core 1 is installed also moves the table T in the front and rear directions in association with the movement of the left and right movement mechanism 20 and the shanghai movement mechanism 30. The finishing processing of (1) can be performed more precisely.

At this time, even when the debris of the burr by finishing processing falls to the lower part of the table T, the above-mentioned guide cover 14 can protect members, such as an LM guide etc. extended forward and backward.

The core machining head 40 is provided with a sensor in advance to detect the surface portion of the core (1) to be processed in accordance with the set coordinates, and if the core machining tool 42 finishes the machining, more accurate machining is possible. Do.

The control unit 110 also controls the spindle rotation motor 41 of the core machining head 40 to allow the core machining tool 42 to finish machining the core 1 at a set speed.

3 is a front view of the core drawing apparatus of another embodiment of the present invention, FIG. 4 is a side view of the core drawing apparatus of FIG. 3, and FIG. 5 is a device photograph showing an actual configuration of the core drawing apparatus of FIG. 3.

The core magnetic finishing apparatus 100 of the present embodiment is a device capable of finishing a plurality of cores 1 or two or more cores 1 at a time. To this end, the shanghai copper mechanism 30 has a left and right extending frame 60 extending in the left and right direction and coupled to the front of the vertical moving member 33. A plurality of core processing heads 40 are coupled to the front of the left and right extension frames 60 side by side along the left and right extension frames.

A method of processing the core 1 using the core mapping device 100 disclosed in FIGS. 3 to 5 will be described.

The plurality of cores 1 are fixed to the plurality of fixing jigs 2 on the table T, and the control unit 110 is operated to finish machining the plurality of cores 1. By the command of the control unit 110, the left and right moving mechanism 20, the shank moving mechanism 30 and the forward and backward moving mechanism 10 move relative to the middle core 1 and the middle core processing head 40 in the front, rear, left, and right directions. The burr is subjected to finishing processing according to the surface shape of the core 1. In addition, the spindle rotation motor 41 is operated by the controller 110 so that the core machining tool 42 processes the core.

The peculiarity of the present embodiment is that the vertical sliding member 33 and the left and right extension frame 60 are coupled together on the front of the vertical guide frame body 34 coupled to the left and right sliding member 23, and thus the vertical direction is upward and downward. Shanghai simultaneous left and right extension frame 60 and the plurality of core processing head 40 coupled to the sliding member 33 is moved up and down at the same time to process the plurality of cores 1 at the same time. That is, the core drawing apparatus of the present embodiment can include a plurality of processing heads on one Shanghai coaxial shaft connected to the left and right moving shafts, thereby simultaneously mapping a plurality of cores, thereby greatly improving work productivity and efficiency.

The installation interval of the core processing head 40 in the left and right extension frame 60 may be determined at a predetermined interval in consideration of the distance between the middle cores 1 in the lower part and taking into consideration the intervals that do not interfere with each other during the left and right transfer operation. have.

The apparatus of FIG. 3 is provided with the left and right extension frame 60 extended in the left-right direction in one shangdong-dong mechanism 30, and the several core processing head 40 was installed in this frame 60. As shown in FIG. Such a device can move the plurality of core processing heads 40 by using only one shanghai mechanism so that the plurality of cores 1 can be mapped, and thus the device configuration is simple and the cost of equipment can be reduced.

On the other hand, the plurality of core processing head 40 is coupled to one of the left and right extending frame 60 and the vertical moving member 33, the load is concentrated, there is a weak point in the structure. To this end, it may be necessary to install a separate reinforcing member.

On the other hand, there is also a method in which a plurality of shank copper mechanism 30 itself is provided in the same number as the number of core machining head 40. In the apparatus of FIGS. 1 and 2, the apparatus of FIG. 1 and FIG. 2 has a shape in which a plurality of shank moving mechanisms 30 and the core processing head 40 are arranged side by side along the left and right sliding members 23. That is, a plurality of the shankdong mechanism 30 is installed side by side in the left and right direction on the left and right sliding member 23, each of the core processing head (on the vertical movement member 33 of the plurality of shanghai copper mechanism 30) 40) is combined. In this case, there is no problem that the load is concentrated on one shankdong mechanism 30, but since a plurality of shankdong mechanisms 30 must be provided, the apparatus cost can be increased and a plurality of the lateral sliding members 23 can be provided. The disadvantage that the load of the shanghai copper mechanism 30 and the core processing head 40 is concentrated remains.

For load distribution and stable support, a reinforcing frame extending in left and right directions in addition to the fixing frame 50 is separately installed on the upper portion of the apparatus main body 100, and the left and right sliding members 23 and the upper and lower sides are mounted on the reinforcing frame. It is preferable to provide a guide frame body connected to the upper and lower guide frame body 34 of the moving mechanism 30.

In the above-described embodiment, a linear moving mechanism such as a ball screw is employed as the front, rear, left and right and up and down moving mechanisms. However, the linear actuator mechanism of the conventional structure which moves the cylinder rod linearly by hydraulic or pneumatic pressure as necessary. It is also possible to employ a device.

As the drive motor of the moving mechanism, a servo motor, a stepping motor, a linear motor, or the like can be adopted as necessary.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the embodiments, and the technical spirit of the present invention and those described below will be described by those skilled in the art to which the present invention pertains. Various modifications and variations are possible without departing from the scope of the appended claims.

1: Middle 10: Shanghai East Organization
11: Front and rear extension ball screw 11a, 11b: coupling member
12: forward and backward drive motor 13: connecting member
14: guide cover 20: left and right moving mechanism
21: left and right extending ball screw 22: left and right drive motor
23: left and right moving members (left and right sliding members)
24: left and right guide frame 30: Shanghai East mechanism
31: Up-down extending ball screw 32: Shanghai-dong drive motor
33: vertical moving member (up and down sliding member)
34: upper and lower guide frame body 40: core cutting head
41: Spindle rotating motor 42: Core machining tool
50: fixed frame 51: connection frame
60: left and right extension frame 100: core mapping device
110: control unit

Claims (11)

In the middle magnetic finishing apparatus for finishing the middle core,
A table on which the core is fixed,
Front and rear moving drive motor, and the front and rear extending ball screw coupled to the table via the connecting member in the lower part of the table, and the front and rear to move the table in the front and rear direction by the front and rear moving drive motor and the front and rear extending ball screw With a moving mechanism,
Located in the upper portion of the table, coupled to the vertical movement member provided in the Shanghai copper mechanism, and moves up and down in accordance with the operation of the Shanghai copper mechanism, and the core machining head for finishing machining the core with a core machining tool;
The left and right moving drive motor, the left and right extending ball screw coupled to the left and right moving drive motor, the left and right moving member coupled to the left and right extending ball screw, and the left and right extending ball screw are installed in the left and right direction. Consists of extending left and right guide frame body,
The left and right moving member is coupled to the front of the left and right guide frame body by the power of the drive source and consists of a left and right sliding member to slide left and right along the left and right guide frame body by the rotation of the left and right extending ball screw to the core processing head A left and right moving mechanism for moving the right and left directions,
The Shanghai moving mechanism is coupled to the left and right moving members to move left and right according to the movement of the left and right moving members,
Shanghai-dong drive motor as a driving source, a vertically extending ball screw coupled to the Shanghai-dong driving motor, a vertically moving member coupled to the vertically extending ball screw, and the vertically extending ball screw are installed in the vertical direction. Consists of extending upper and lower guide frame body,
The up and down moving member is coupled to the front of the up and down guide frame body by the power of the drive source and consists of an up and down sliding member that slides up and down along the up and down guide frame body by the rotation of the up and down extending ball screw to the core processing head Shanghai East mechanism to move the up and down direction,
And a control unit for controlling the movement of the front and rear movement mechanism, the core processing head, the left and right movement mechanism, and the Shanghai movement mechanism. The method according to claim 1,
The upper and lower guide frame body is coupled to the left and right sliding member in accordance with the left and right movement of the left and right sliding mechanism, characterized in that the moving mechanism including the upper and lower guide frame body and the core machining head is moved left and right . The method according to claim 1,
The front and rear movement mechanism, middle and middle finishing apparatus is installed on at least one side of the front and rear extension ball screw and includes a front and rear extension LM guide slidably coupled to the table. The method according to claim 3,
The core finishing apparatus is characterized in that the guide cover which covers the upper portion of the front and rear extending LM guide and expands and contracts as the table moves. The method according to claim 1,
The Shanghai moving mechanism extends in the left and right direction and has a left and right extension frame coupled to the front of the vertical movement member,
Core drawing apparatus characterized in that a plurality of core processing heads are coupled side by side along the left and right extension frame to finish a plurality of cores. The method according to claim 1,
The Shanghai moving mechanism extends in the left and right direction and has a left and right extension frame coupled to the front of the vertical movement member,
Core drawing apparatus characterized in that a plurality of core processing heads are coupled side by side along the left and right extension frame to finish a plurality of cores. The method according to claim 1,
The plurality of shank copper mechanism is installed side by side in the left and right direction in the lateral sliding member, the middle magnetic finishing device, characterized in that the core processing head is coupled to the vertical movement member of the plurality of shank copper mechanism respectively.
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