WO2022065543A1

WO2022065543A1 - High-capacity and high-speed centrifugal finishing apparatus having maximized polishing capability

Info

Publication number: WO2022065543A1
Application number: PCT/KR2020/012911
Authority: WO
Inventors: 이재서; 이종봉
Original assignee: (주)디씨엠
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2022-03-31

Abstract

One embodiment of the present invention may provide a high-capacity and high-speed centrifugal finishing apparatus having a maximized polishing capability, the centrifugal finishing apparatus having a barrel for which width A along a first direction is shorter than length B in a second direction perpendicular to the first direction.

Description

High-capacity, high-speed centrifugal grinder with maximized grinding performance

The present invention relates to a large-capacity high-speed centrifugal grinder that maximizes grinding performance.

BACKGROUND ART A centrifugal barrel grinder is known as a barrel grinder for performing burr removal, rounding, polishing, and the like of a workpiece. The centrifugal barrel grinder has a structure in which a grinding tank (barrel tank) is rotatably attached to an orbiting disk (turret) that rotates in a vertical direction about an orbital axis at intervals in the circumferential direction. This is a grinding machine that inserts the workpiece, abrasive stone, compound, and water into the barrel tank, rotates it, and creates a strong cutting force or shines as the parts and the grinding stone collide with each other by centrifugal force.

The amount of the workpiece that can be polished in one operation (polishing cycle) depends on the size of the barrel tank. The conventional barrel tank is formed in the form of a long width and a narrow diameter, as shown in FIGS. 1A and 1B. For example, the width is 770 m and the diameter is formed in the size of 418 m. In this case, since the depth of the barrel is not deep and the width is wide, the friction force between the workpiece and the grinding stone is not large, and there is a problem in that the working time increases in order to grind a large amount of the workpiece.

In addition, in the prior art, after polishing is finished, in the process of discharging the workpiece and the grinding stone, the operator directly opens the lid of the barrel tank and moves the container directly to the lower part of the barrel tank. There is a problem.

Embodiments of the present invention are to provide a high-capacity, high-capacity centrifugal grinder that maximizes the grinding performance that can shorten the grinding time through a large-capacity barrel tank.

Another object of the present invention is to provide a high-capacity, high-capacity centrifugal grinder that maximizes grinding performance that can automate the process of discharging the finished workpiece and grinding stone.

According to an embodiment of the present invention, a high-capacity high-capacity centrifugal centrifuge maximizing abrasive performance including a barrel in which the length A of the width along the first direction is shorter than the length B along the second direction, which is perpendicular to the first direction. A grinder is provided.

In addition, the ratio of the length A to the length B is 1:1.1 or more and 1:1.5 or less, it is possible to provide a high-capacity high-capacity centrifugal grinder maximizing polishing performance.

In addition, the length corresponding to the depth of the barrel can provide a high-capacity high-capacity centrifugal grinder that maximizes polishing performance that is smaller than the length B by a preset length or the same length as the length B.

In addition, the turret in which the barrel is installed; and a driving unit for rotating the barrel, wherein the driving unit includes: a main driving device for transmitting power; And it is possible to provide a high-capacity high-capacity centrifugal grinder maximizing the grinding performance comprising a; and a reduction gear that reduces the number of revolutions transmitted from the main driving device and transmits it to the turret to reduce the rotation speed of the barrel.

In addition, it is possible to provide a high-capacity high-capacity centrifugal grinder maximizing polishing performance, characterized in that the barrel rotates at 180 rpm.

In addition, the diameter of the turret can provide a high-capacity high-capacity centrifugal grinder maximizing the grinding performance, characterized in that 1700mm.

In addition, the barrel can provide a high-capacity high-capacity centrifugal grinder maximizing polishing performance, characterized in that it is made of high manganese steel containing more than a preset content of manganese.

In addition, including a discharge unit for discharging the object and liquid falling from the barrel tank to the outside, the discharge unit, the discharge unit is installed in the lower side in the barrel tank, a hopper for guiding the falling object and liquid to the outside; and a conveyor belt installed from the lower side of the hopper to the outside to reciprocate the collection tank from the lower side of the hopper to the outside. It is possible to provide a large-capacity high-speed centrifugal grinder that maximizes polishing performance, including

According to an embodiment of the present invention, it is possible to shorten the polishing time through a large-capacity barrel tank.

In addition, it is possible to automate the process of discharging the finished workpiece and grinding stone.

1A and 1B are views showing a cross-section of a barrel of a conventional centrifugal grinder;

2 to 6 are perspective views showing a large-capacity high-speed centrifugal grinder maximizing polishing performance in an embodiment of the present invention;

7 to 8 are views showing a driving unit according to an embodiment of the present invention;

9 is a perspective view showing a barrel according to an embodiment of the present invention;

10A is a cross-sectional view along a first direction of a barrel according to an embodiment of the present invention;

10B is a cross-sectional view taken in a second direction of a barrel according to an embodiment of the present invention;

Fig. 11 is a side view of the barrel of Fig. 9;

12 is a view showing an open state of the barrel of FIG.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is merely an example, and the present invention is not limited thereto.

In the description of the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.

The technical spirit of the present invention is determined by the claims, and the following examples are only one means for efficiently explaining the technical spirit of the present invention to those of ordinary skill in the art to which the present invention belongs.

2 to 6 are perspective views showing a large-capacity high-speed centrifugal grinder maximizing polishing performance in an embodiment of the present invention, and FIGS. 7 to 8 are views showing a driving unit according to an embodiment of the present invention.

2 to 8, the high-capacity high-capacity centrifugal grinder 1 maximizing the grinding performance according to an embodiment of the present invention includes a housing 10, a barrel 20, a turret 30, and a central gear 40. , the cover opening part 50 , the driving part 60 , the discharge part 70 and the control part 80 may be included.

The housing 10 is formed to support and surround the components such as the barrel 20 and the driving unit 60 at the same time, thereby forming an overall external shape. The housing 10 may include a frame part 11 , a plate 12 , and a barrel opening part 13 .

A plurality of frame portions 11 may form a frame on the outside of components such as the barrel 20 . A plurality of vertical frame portions 11a perpendicular to the ground may be installed, and a plurality of horizontal frame portions 11b may be installed to connect the vertical frame portions 11a to each other. That is, both ends of the horizontal frame portion 11b may be respectively connected to the vertical frame portion 11a spaced apart from each other. In this way, the vertical frame portion 11a and the horizontal frame portion 11b are connected to each other, so that the supporting force and the fixing force may be increased.

The plate 12 may be fixed to the frame unit 11 or may be slidably installed. As an example, the plate 12 is fixed to the frame part 11 to protect the components disposed therein from the outside, and the plate 12 that is slidably installed can open specific components according to the needs of the operator. can

The barrel opening part 13 may open or shield a portion of the housing 10 in which the barrel 20 is disposed. The barrel opening part 13 may expose the barrel 20 fixed between the turrets 30 disposed on both sides to the outside, and may be shielded from the outside. In this case, the barrel opening part 13 may be formed to be longer than the width (length in the first direction) of the barrel 20 .

The barrel opening part 13 may include a cover 131 , a guide chain 132 , a shaft 133 , a cover moving gear 134 , and a power unit 135 .

The cover 131 may be disposed along the circumference of the turret 30 from the outside of the barrel opening part 13 . In this case, the cover 131 may be formed to be curved along the curvature of the turret 30 .

The guide chain 132 may guide the barrel opening 13 to rotate along the circumference of the turret 30 . The guide chain 132 may be installed on the outer surface of the cover 131 . The guide chain 132 may be installed along the longitudinal direction of the barrel opening part 13 (ie, along the circumference of the barrel opening part 13).

The shaft 133 may be installed to be spaced apart from the guide chain 132 by a predetermined height at the upper portion of the housing 10 . A cover moving gear 134 is installed on the shaft 133 , and the cover moving gear 134 may be engaged with the guide chain 132 . It is connected to the power unit 135, the cover moving gear 134 is rotated by the power unit 135, and the guide chain 132 is moved as the cover moving gear 134 rotates, so that the cover 131 is can rotate

As such, the operation of the power unit 135 and the rotation of the barrel opening unit 13 may be controlled by the control unit 80 . That is, the control unit 80 may control the on/off of the operation of the power unit 135 to rotate the barrel opening unit 13 .

The barrel 20 may include a barrel tank 21 , a cover 22 , and a barrel gear 23 .

The barrel tank 21 can accommodate a workpiece, a compound, a grinding stone, and the like therein.

In a state in which the barrel tank 21 accommodates the workpiece, the compound, and the grinding stone, and the cover 22 shields the opening 212 of the barrel tank 21, as the barrel 20 rotates, the workpiece and the workpiece The grinding stone is rubbed, and the burr of the workpiece can be removed and the surface can be processed.

The cover 22 may open or shield the opening 212 formed on the upper portion of the barrel tank 21 . The cover 22 may be raised and lowered by the cover opening 50 to be described later.

The barrel gear 23 may be connected to the center gear 40 installed in the turret 30 . As the central gear 40 receives the driving force from the driving unit 60 and rotates, the barrel gear 23 rotates, so that the barrel 20 can rotate according to the rotation of the turret 30 .

A plurality of barrel gears 23 and a center gear 40 may be installed in the turret 30 . Here, referring to FIGS. 4 and 5 , the plurality of barrels 20 may be installed in the turret 30 . For example, four barrels 20 may be installed in the turret 30 .

The lid opening 50 may open the lid 22 of the barrel 20 . The cover opening 50 may be operated when discharging the workpiece and the grinding stone after the grinding process is finished. A detailed description of the cover opening 50 will be described with reference to FIG. 12 below.

The driving unit 60 includes a main driving device 61 , a reduction gear 62 , a first idle gear 63 , a second idle gear 64 , a first timing belt 65 , a second timing belt 66 , It may include a first drive belt 67 , a second drive belt 68 , and a connection belt 69 .

The driving unit 60 may transmit the power of the main driving device 61 to rotate the barrel 20 . The main driving device 60 may be connected to the center gear 40 .

The main driving device 61 may be formed of a motor capable of having a driving force capable of rotating the plurality of large-sized barrels 20 .

The reduction gear 62 may connect the main driving device 61 and the turret 30 . The reduction gear 62 may reduce the number of rotations output from the main driving device 61 and transmit it to the turret 30 . For example, the barrel 20 according to the present invention may be rotated at 180 rpm.

The first idle gear 63 and the second idle gear 64 may be connected to the intermediate gear 40 . The first idle gear 63 and the second idle gear 64 may allow the turret 30 to rotate while the barrel 20 does not rotate while the grinding operation is in progress in the barrel 20. there is.

The first idle gear 63 and the second idle gear 64 may be operated so that the barrel tank 21 pivots when the workpiece and abrasive stones from the inside of the barrel tank 21 are discharged after the grinding operation is finished. there is.

The first timing belt 65 may be connected to the barrel gear 23a of the first barrel 20a and the barrel gear 23b and the center gear 40 of the second barrel 20b. The first timing belt 65 transmits the rotational force of the center gear 40 to the barrel gear 23a of the first barrel 20a and the barrel gear 23b of the second barrel 20b, and the center gear 40 The first barrel 20a and the second barrel 20b may be rotated according to the rotation of the .

The second timing belt 66 may be connected to the barrel gear 23c of the third barrel 20c and the barrel gear 23d and the center gear 40 of the fourth barrel 20d. The second timing belt 66 transmits the rotational force of the center gear 40 to the barrel gear 23c of the third barrel 20c and the barrel gear 23d of the fourth barrel 20d, and the center gear 40 According to the rotation of the third barrel 20c and the fourth barrel 20d may be rotated.

The first drive belt 67 may be connected to the central gear 40 and the reduction gear 62 , and the second drive belt 68 may be connected to the reduction gear 62 and the main drive device 61 .

In this way, the force transmitted from the main driving device 61 may be transmitted to the center gear 40 via the reduction gear 62 . Vibration and noise generated by rotating the high-load barrel 20 at high speed can be minimized. That is, in order to minimize vibration and noise generated by rotating the high-load barrel 20 at high speed, the reduction gear 62 is disposed between the barrel 20 and the driving unit 60 .

The discharge unit 70 may include a hopper 71 , a conveyor belt 72 , and a collection tank 73 .

The hopper 71 is located at the lower portion of the turret 30 , and may guide the workpiece, compound, and grinding stone falling from the barrel tank 21 to be discharged.

The conveyor belt 72 may be installed connected from the outside to the lower side of the hopper 71 . The conveyor belt 72 may move the collection tank 73 from the lower side of the hopper 71 to the outside.

Specifically, when discharging the workpiece, compound, and abrasive stone inside the barrel tank 21, the collection tank 73 capable of accommodating the workpiece, compound, and abrasive stone therein is transferred to a hopper (72) using a conveyor belt (72). 71) can be placed on the lower side. When the processing object, compound, and abrasive stone of the barrel tank 21 fall while the collection tank 73 is disposed below the hopper 71, the processing object, compound, and abrasive stone may be accommodated in the collection tank 73, , in this state, the collection tank 73 may be discharged to the outside again by the conveyor belt 72 . Through this method, the process of discharging the workpiece, compound, and grinding stone can be automated.

The movement of the conveyor belt 72 may be controlled by the control unit 80 . Specifically, the control unit 80 may control the moving direction of the conveyor belt 72 to move the collection tank 73 from the outside to the lower side of the hopper 71 , and move the collection tank 73 to the lower side of the hopper 71 . It can also be moved from the outside.

The control unit 80 may control the barrel opening unit 13 , the barrel 20 , the main driving device 61 , and the conveyor belt 72 .

The control unit 80 may control the on/off operation of the power unit 135 of the moving device 12 to control the rotation of the barrel opening unit 13 . That is, as the barrel opening part 13 rotates, the barrel 20 may be opened to the operator.

Also, the controller 80 may control the rotation of the main driving device 61 to control the rotation of the barrel 20 . Specifically, the control unit 80 controls the operation of the main driving device 61, but may control forward rotation and reverse rotation. As the main driving device 61 rotates the central gear 40 in the forward rotation direction, the barrel gear 23 rotates in the forward rotation direction, so that the barrel 20 may rotate. In addition, when the main driving device 61 rotates the central gear 40 in the reverse rotation direction, the barrel gear 23 rotates in the reverse rotation direction so that the barrel 20 rotates in the reverse rotation direction.

In addition, the control unit 80 may control the operation and operation direction of the conveyor belt 72 to enter and discharge the collection tank 73 . When the control unit 80 controls the conveyor belt 72 to rotate toward the hopper 71 , the collection tank 73 may enter the lower side of the hopper 71 . Conversely, when the control unit 80 controls the conveyor belt 72 to rotate from the lower side of the hopper 71 to the outside, the collection tank 73 may be discharged to the outside.

In this way, under the control of the control unit 80, the large-capacity high-speed centrifugal grinder 1 maximizing the grinding performance can be automated.

Figure 9 is a perspective view showing a barrel according to an embodiment of the present invention, Figure 10a is a cross-sectional view taken along the first direction of the barrel according to an embodiment of the present invention, Figure 10b is a barrel according to an embodiment of the present invention is a cross-sectional view taken in the second direction, FIG. 11 is a side view of the barrel of FIG. 9 , and FIG. 12 is a view showing an open state of the barrel of FIG. 9 .

9 to 12 , as described above, the barrel 20 may include a barrel tank 21 , a cover 22 , and a barrel gear 23 .

Here, referring to FIGS. 9 and 10 , the barrel tank 21 may have a space formed therein to accommodate a workpiece, a compound, and a grinding stone.

The barrel tank 21 may be formed so that the length A of the width of the cross section cut along the first direction is shorter than the length B of the longest width of the cross section cut along the second direction. Here, the length B may be a diameter. In addition, the depth of the barrel tank 21 may correspond to the diameter, and thus the depth C of the barrel tank 21 may be formed similar to the length B. For example, length A may be 464 m, length B may be 584 m, and length C may be 580 m. The ratio of the length A to the length B may be 1:1.1 or more and 1:1.5 or less, and preferably it may be formed in a ratio of 1:1.26.

Here, looking at the size of the conventional general barrel tank 21 with reference to FIG. 1, the length x corresponding to the length A of the present invention is 770m, and the length of the length y corresponding to the length B of the present invention is 418m. In addition, the length z corresponding to the depth C of the present invention may be 410m.

As such, the width of the barrel tank 21 of the present invention in the first direction is formed to be narrower than the width of the conventional barrel tank 21, and the barrel tank 21 of the present invention has a diameter corresponding to the diameter in the second direction. The length may be formed longer than the length of the diameter of the conventional barrel tank (21).

The barrel tank 21 of the present invention having a narrow width and a deep inner depth can increase the frictional force between the workpiece and the grinding stone. Specifically, when the narrow width and deep barrel tank 21 rotates, the falling distance of objects and liquids inside the barrel tank 21 is increased. As the drop distance increases, the movement increases, and the friction force between the contents inside may increase. Therefore, the grinding|polishing of a to-be-processed object can be performed more quickly.

For example, in the conventional barrel tank 21 shown in FIG. 1, 3 hours of working time are required to polish a specific workpiece, whereas the same as in the present invention, by increasing the drop distance and increasing the overall volume, the width is narrow as in the present invention. The working time for grinding a specific workpiece can be reduced to 1 hour.

In addition, by increasing the total volume of the barrel tank 21 of the present invention, the motor specification of the driving unit 60 can be increased, and the barrel tank 21 can be rotated at a rotation speed of 180 rpm. In particular, by connecting the main driving device 61 and the turret 30 in two stages through the reduction gear 62, the force is distributed and thus noise can be reduced. Therefore, since the barrel 20 can be rotated at a higher speed, it can be rotated at 180 rpm, which is faster than the conventional barrel 20 rotation speed.

Conventionally, since the main driving device and the turret are directly connected in one stage, noise is generated, and this causes the barrel 20 of the same capacity (60 liters) to be rotated at 120 rpm.

In addition, the barrel 20 may be made of high manganese steel containing manganese in a predetermined content or more. For example, the barrel 20 may be made of 0.31 wt% of carbon, 0.42 wt% of silicon, 1.23 wt% of manganese, 0.015 wt% of phosphorus, 0.021 wt% of sulfur, and the remaining amount of casting steel.

As described above, since the barrel 20 according to an embodiment of the present invention is manufactured to be thicker than a predetermined thickness using high manganese steel, a separate rubber (R) coating is not required. For example, in the case of using a conventional rubber (R) coating as shown in FIG. 1 , a rubber (R) coating of 6 mm is applied to the outside of the steel plate 6 mm to form the barrel 20 . On the other hand, the present invention is formed of high manganese steel 30mm, it is possible to increase the strength and also reduce the noise.

In addition, the present invention may include a first protrusion 211 , a second protrusion 212 , and a third protrusion 213 to increase the strength of the barrel tank 21 .

Specifically, the first protrusion 211 is a portion formed on the upper surface where the opening is formed, and may be formed to be thicker than the thickness of the side surface or may be formed to protrude outward. The first protrusion 211 is a portion supporting the cover 22 , and may serve as a flesh for increasing the strength of the upper portion of the barrel tank 21 .

The second protrusion 212 is formed to protrude at a predetermined height from the curved portion or the angled portion, and thus the angled portion of the barrel tank 21 may serve as a rib to increase the strength of the portion.

A plurality of third protrusions 213 may be formed to be spaced apart from each other by a predetermined distance from the outer surface. The third protrusion 213 may serve as a spoke to increase the strength of the side of the barrel tank 21 .

Here, 9 and 12 , the cover 22 may be in contact with the upper surface of the barrel tank 21 to shield the opening S formed in the upper portion of the barrel tank 21 . The cover 22 may include fastening protrusions 221 protruding from both sides. The fastening protrusion 221 may be inserted or separated from the fastening hole 210 formed in the barrel tank 21 to fasten or separate the cover 22 and the barrel tank 21 .

1 and 2 , the cover opening 50 may include a wire 51 , a hook portion 52 , and a pulley 53 .

The cover opening 50 may be installed on the upper portion of the housing 10 . In addition, when the cover 131 is opened and the barrel 20 is exposed to the outside, it may be operated.

The wire 51 is released by the operation of the pulley 53 , and thus the ring part 52 descends to the cover 22 of the barrel 20 . When the ring portion 52 is caught in the hole formed in the cover 22 , the pulley 53 may be operated again to wind the wire 51 . At this time, the fastening protrusion 221 is separated from the fastening hole 210 formed in the barrel tank 21 .

When the pulley 53 winds the wire 51 , the cover 22 caught on the ring part 52 rises, so that the opening S of the barrel tank 21 may be opened.

In this state, as the turret 30 rotates, the barrel tank 21 pivots, and the opening S rotates to face the downward direction. Accordingly, the contents inside the barrel tank 21 may be discharged to the hopper 71 .

The above detailed description is illustrative of the present invention. In addition, the above description shows and describes preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications, and environments. That is, changes or modifications are possible within the scope of the concept of the invention disclosed herein, the scope equivalent to the written disclosure, and/or within the scope of skill or knowledge in the art. The above-described embodiment describes the best state for implementing the technical idea of the present invention, and various changes required in specific application fields and uses of the present invention are possible. Accordingly, the detailed description of the present invention is not intended to limit the present invention to the disclosed embodiments. Also, the appended claims should be construed as including other embodiments.

Claims

A high-capacity, high-capacity centrifugal grinder with maximizing polishing performance, comprising a barrel having a width A in a first direction shorter than a length B in a second direction perpendicular to the first direction.
The method according to claim 1,

A high-capacity high-capacity centrifugal grinder that maximizes polishing performance in which the ratio of the length A to the length B is 1:1.1 or more and 1:1.5 or less.
3. The method according to claim 2,

A high-capacity high-capacity centrifugal grinder that maximizes polishing performance, wherein the length corresponding to the depth of the barrel is smaller than the length B by a preset length or the same length as the length B.
4. The method according to claim 3,

a turret in which the barrel is installed; and

A driving unit for rotating the barrel; including,

The driving unit,

a main driving device that transmits power; and

A high-capacity, high-capacity centrifugal grinder maximizing polishing performance, including a reduction gear that reduces the number of rotations transmitted from the main driving device and transmits it to the turret to reduce the rotation speed of the barrel.
5. The method according to claim 4,

A high-capacity, high-capacity centrifugal grinder that maximizes grinding performance, characterized in that the barrel rotates at 180 rpm.
5. The method according to claim 4,

The high-capacity high-capacity centrifugal grinder maximizing the grinding performance, characterized in that the diameter of the turret is 1700mm.
The method according to claim 1,

The barrel is a high-capacity high-capacity centrifugal grinder that maximizes grinding performance, characterized in that it is made of high manganese steel containing manganese in a predetermined content or more.
The method according to claim 1,

Comprising a discharge unit for discharging the object and liquid falling from the barrel tank to the outside,

The discharge unit,

a hopper that is installed on the lower side of the barrel tank and guides falling objects and liquids to the outside; and

a conveyor belt installed from the lower side of the hopper to the outside to reciprocate the collection tank from the lower side of the hopper to the outside;

A high-capacity, high-capacity centrifugal grinder that maximizes grinding performance including