KR20210122612A - Coolant tank device of machine tool - Google Patents

Abstract

The present invention relates to a cutting oil tank device for a machine tool. According to the present invention, the cutting oil tank device for a machine tool comprises: a recovery unit for recovering cutting oil and chips used during workpiece processing; a filtration unit installed on one side of the recovery unit to communicate with the recovery unit to filter the cutting oil introduced through the recovery unit; and a circulation unit installed on one side of the filtration unit so as to communicate with the filtration unit and circulating the cutting oil filtered through the filtration unit to a workpiece processing part. The filtration unit separates chips contained in the cutting oil by changing the flow direction of the cutting oil flowing through the filtration unit, and can collect other oil contained in the cutting oil by the specific gravity difference between the cutting oil and other oil flowing through the filtration unit.

Description

Coolant tank device of machine tool

The present invention relates to a coolant tank device for a machine tool, and more particularly, in a machine tool using a water-soluble coolant, the flow direction of the coolant flowing through the filtration unit is switched to precipitate and separate fine chips, and the other oil is separated by the specific gravity difference. It relates to a coolant tank device for a machine tool with an improved collecting structure.

In general, a machine tool refers to a machine used for the purpose of processing 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, and CNC lathes, 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 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 a workpiece material is seated and transferred 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 vibration isolator etc. are provided.

In general, in a machine tool, a table, a tool rest, a main shaft, a tailstock, a vibration isolator, etc. are provided with a conveying unit which conveys along a conveying axis in order to perform various processing.

In addition, in general, a machine tool uses a plurality of tools for various processing, and a tool magazine or a turret is used as a tool storage place for storing and storing a plurality of tools.

Such a machine tool uses a plurality of tools for various processing, and a tool magazine is used in the form of a tool storage place storing a plurality of tools.

In addition, in general, a machine tool is provided with an automatic tool changer (ATC, Automatic Tool Changer) for withdrawing a specific tool from the tool magazine or receiving it again according to the command of the numerical control unit in order to improve the productivity of the machine tool.

In addition, in general, a machine tool is provided with an automatic pallet changer (APC, Automatic Palette Changer) in order to minimize the non-working time. The automatic pallet changer (APC) automatically exchanges pallets between the workpiece machining area and the workpiece installation area. Pallets may be loaded with workpieces.

In general, a machine tool supplies a liquid such as a cutting oil to a spindle or a tool and a workpiece to increase the cutting effect and lubricate and cool the cutting oil, and the cutting oil is recovered and circulated after use. In the recovered cutting oil, chips generated during cutting are mixed and recovered. After separating the cutting oil from the chips using a purification device, the cutting oil is circulated again.

Chips of various sizes and types generated during machining of machine tools are treated as industrial wastes by humans or by transporting them through automatic devices such as chip conveyors. That is, a device for automatically discharging these chips to the outside of the equipment is called a chip conveyor device.

In general, a machine tool supplies each component or necessary element by adopting a lubrication method by oil in order to improve or prevent drive efficiency reduction due to friction between components and damage to components during operation.

The oil used for lubrication becomes other oil (waste oil) after performing its own lubrication function and is buried in various parts of the machine tool.

Such other oil cannot be mixed with water-soluble cutting oil especially in machine tools using water-soluble cutting oil, but floats on top of the cutting oil to form other oil, which is a waste oil layer. This waste oil layer, other oil, blocks the cutting oil from the atmosphere, i.e., cuts off the supply of oxygen, thereby promoting the decay of the cutting oil, lowering the function of the cutting oil, impairing the surface roughness of the workpiece, reducing the machining precision, and generating a bad odor. cutting oil cannot be reused.

In order to prevent this, the conventional coolant tank device of a machine tool removes other oil contained in the coolant by installing only a simple oil skimmer in the coolant storage tank.

However, in the conventional coolant tank device of a machine tool, as other oil is removed with only one oil skimmer in a wide range in which coolant is stored, overload or performance decrease of the oil skimmer, the life of the coolant decreases due to microchips, and frequent replacement of coolant Accordingly, there was a problem in that the overall maintenance cost and maintenance time of the machine tool increased, and the production cost increased.

In addition, the conventional coolant tank device of a machine tool increases the manufacturing cost of the coolant tank device as it is necessary to additionally install and control a number of oil skimmers and various devices for their operation when other oil removal is not smooth with one oil skimmer. However, there was a problem in that the space utilization decreased as the miniaturization could not be achieved.

Moreover, the conventional cutting oil tank device of the machine tool has a problem in that the machining precision of the machine tool is lowered due to the decrease in the life and performance of the cutting oil, and the occurrence rate of defective products is increased.

In addition, in the conventional coolant tank device of the machine tool, the non-working time increases due to frequent coolant replacement and the oil skimmer maintenance time increases, thereby reducing the productivity of the machine tool, worsening the working environment due to coolant contamination, and reducing operator discomfort. There were problems that caused it.

Korean Patent Publication No. 10-2014-0080736 Korean Patent Publication No. 10-2018-0107878 Korean Patent Publication No. 10-2019-0110707 Korea Utility Model Publication No. 20-1998-0026746

The present invention is to solve the above problems, and an object of the present invention is to change the flow direction of the cutting oil flowing through the filtering part through the structure and arrangement of the partition wall part, the guide part, and the blocking part in a machine tool using water-soluble cutting oil. Fine chips contained in the cutting oil are precipitated and separated, and other oil is effectively collected from the cutting oil through the specific gravity difference before flowing to the circulation unit through the structure and arrangement of the collecting unit, and the life of the cutting oil is increased by removing it with an oil skimmer. to reduce the maintenance cost and time of the machine tool, maximize the space utilization by miniaturizing the coolant tank device through an optimized layout and structure, and improve the working environment by maintaining the best coolant condition to increase customer satisfaction. and to provide a coolant tank device for a machine tool that can increase machining precision and productivity by improving coolant performance.

In order to achieve the object of the present invention, there is provided a coolant tank device for a machine tool according to the present invention, comprising: a recovery unit for recovering cutting oil and chips used during workpiece processing; a filtration unit installed on one side of the recovery unit to communicate with the recovery unit to filter the cutting oil introduced through the recovery unit; and a circulation unit installed on one side of the filtering unit to communicate with the filtering unit and circulating the cutting oil filtered through the filtering unit to the workpiece processing part; including, wherein the filtering unit converts the flow direction of the cutting oil flowing through the filtering unit It is possible to separate the chips contained in the cutting oil and collect other oil contained in the cutting oil by the difference in specific gravity between the cutting oil and the other oil flowing through the filter unit.

Further, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the filtering unit of the coolant tank device of the machine tool is a base portion; a partition wall part installed inside the base part to change a flow direction of the cutting oil flowing through the filter part before the cutting oil flowing into the filtering part flows out to the circulation part; and a guide part installed inside the base part to alternately face the partition wall part in order to change the flow direction of the cutting oil introduced into the filtering part.

Further, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the filtering part of the coolant tank device of the machine tool is adjacent to the circulation part and is installed inside the base part so as to engage with a part of the partition wall part. It may include; a collecting unit for collecting the other oil contained in the cutting oil before the cutting oil flowing through the filtering unit flows out to the circulation unit.

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the filtering part of the coolant tank device of the machine tool is parallel to the collecting part between the collecting part and the guide part in the horizontal direction, and the bulkhead part may include a;

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the filtering unit of the cutting oil tank device of the machine tool is adjacent to the recovery unit and horizontal to introduce the coolant recovered through the recovery unit into the filtering unit. It may include; a stepped portion extending stepwise in the direction.

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the filter part of the coolant tank device of the machine tool is a filter part detachably installed between the guide part and the stepped part; may include have.

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the bulkhead portion of the filtering part of the coolant tank device of the machine tool is coupled to the base portion on one side and a shielding portion extending in the horizontal direction; and an extension portion extending in a vertical direction from the other side of the shielding portion.

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the collecting part of the filtering part of the coolant tank device of the machine tool in a horizontal direction so that one side is coupled to the extension part and the other side is coupled to the base part a body portion extending to; and an outlet formed open at the lower portion of the main body in order to flow the cutting oil to the circulation unit.

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, one side of the guide part of the filtering part of the coolant tank device of the machine tool is coupled to the base part and parallel to the shielding part in the horizontal direction. a partition portion extending in the horizontal direction; and a bent portion extending in the vertical direction to face the extension portion from the other side of the partition portion.

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the height direction length of the blocking portion of the coolant tank device of the machine tool may be formed larger than the height direction length of the outlet.

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the height direction length of the inlet part openly formed on the upper part of the stepped part of the coolant tank device of the machine tool is formed to be larger than the height direction length of the blocking part. can

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the filtering unit of the cutting oil tank device of the machine tool is an oil skimmer installed between the blocking unit and the collecting unit; may further include.

In addition, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the filter part of the coolant tank device of the machine tool is a cover part detachably coupled to the upper portion of the base portion; may further include.

Further, in another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the recovery unit of the coolant tank device of the machine tool includes a housing; and a cover part detachably coupled to the upper part of the housing part.

In another preferred embodiment of the coolant tank device of the machine tool according to the present invention, the circulation unit of the coolant tank device of the machine tool includes a storage unit for storing the cutting oil that has passed through the filtering unit; and a circulation pump for supplying the cutting oil stored in the storage unit to the processing part.

The coolant tank device of the machine tool according to the present invention converts the flow direction of the coolant flowing through the filtering part through the structure and arrangement of the partition wall part, the guide part, and the blocking part in a machine tool using water-soluble coolant to remove fine chips contained in the cutting oil. Before the cutting oil flows to the circulation part through the structure and arrangement of the collecting part, the other oil is first effectively collected through the specific gravity difference, and then the other oil is secondarily removed with the oil skimmer in the collection area. It not only increases the life span, but also prevents overload or reduction in operating performance of the oil skimmer, and also increases the life of the oil skimmer, thereby reducing the maintenance cost and time of the machine tool and reducing the processing cost.

In addition, the coolant tank device of the machine tool according to the present invention improves the space utilization by miniaturizing the coolant tank device through the optimized arrangement and structural design of the partition wall part, guide part, blocking part, collection part, and step part in the filtering part. It has the effect of maximizing and reducing the overall manufacturing cost of the machine tool as well as the manufacturing cost of the coolant tank device.

Moreover, the coolant tank device of the machine tool according to the present invention secondaryly removes fine chips by changing the flow direction of the coolant as well as the filter part, and effectively collects other oil contained in the coolant and easily removes it, so the spoilage of the coolant By minimizing the amount of cutting oil, frequent replacement of cutting oil is prevented, thereby maximizing the utilization of resources, maintaining a clean working environment, and maximizing the satisfaction of workers.

In addition, the coolant tank device of the machine tool according to the present invention can improve the machining precision of the machine tool by increasing the coolant lifespan and improving the performance, and improve the productivity of the machine tool by reducing the non-working time such as reducing the coolant replacement time. It works.

1 shows a perspective view of a coolant tank device of a machine tool according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating a state in which the cover part of the recovery part and the cover part of the filter part are removed in FIG. 1 .
Figure 3 shows a plan view of the coolant tank device of the machine tool according to an embodiment of the present invention shown in Figure 2;
FIG. 4 is a cross-sectional view taken along line BB in FIG. 3 .
5 is a cross-sectional view taken along line AA in FIG. 3 .
Figure 6 shows a conceptual diagram for explaining the flow direction of the coolant in the coolant tank device of the machine tool according to an embodiment of the present invention.

Hereinafter, with reference to the drawings of the coolant tank 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 for 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 implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform the possessor 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 thus is not intended to limit the present invention. As used herein, 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.

1 is a perspective view of a coolant tank device of a machine tool according to an embodiment of the present invention, and FIG. 2 is a perspective view of a state in which the cover part of the recovery part and the cover part of the filter part are removed in FIG. 1 . Figure 3 shows a plan view of the coolant tank device of the machine tool according to an embodiment of the present invention shown in Figure 2; 4 is a cross-sectional view taken along line B-B in FIG. 3 , and FIG. 5 is a cross-sectional view taken along line A-A in FIG. 3 . Figure 6 shows a conceptual diagram for explaining the flow direction of the coolant in the coolant tank device of the machine tool according to an embodiment of the present invention.

Definitions of terms used below are as follows. "Horizontal direction" means the horizontal direction in the same member, that is, the X-axis direction, which is the left and right direction in FIGS. 1 to 6, and "vertical direction" means the vertical direction in the same member while being perpendicular to the horizontal direction, that is, in FIGS. 1 to 6 . 6, the width direction means the Y-axis direction, and "height direction" means the vertical direction of the same member while being perpendicular to the horizontal and vertical directions, that is, the Z-axis direction, that is, the vertical direction in FIGS. 1 to 6 . In addition, upper (upper) means an upward direction in "height direction", that is, an upward direction in FIGS. 1 to 6, and downward (lower) means a downward direction in "height direction", that is, in FIGS. It means downward direction. In addition, "inside (inside)" means the side relatively close to the center of the same member, that is, the inside of each part in FIGS. 1 to 6, and "outside (outside)" means the side relatively far from the center of the same member , means the outside of each part in FIGS. 1 to 6 . "One side (one end)" means one end of the same member in the horizontal or vertical direction, and "Other side (the other end)" means the opposite portion of "one side (one end)" in the same member, that is, in the horizontal direction in the same member. or the other end in the vertical direction.

A coolant tank device 1 of a machine tool according to a preferred embodiment of the present invention will be described with reference to FIGS. 1 to 6 . 1 to 6 , the coolant tank device 1 of the machine tool according to the present invention includes a recovery unit 100 , a filtering unit 200 , and a circulation unit 300 .

The recovery unit 100 performs a function of recovering the cutting oil and chips used in machining the workpiece. That is, although not shown in the drawings, the recovery unit 100 is installed at the lower part of the bed of the machine tool or at one side of the machine tool to recover the cutting oil and chips used in machining the workpiece.

1 to 6 , the recovery unit 100 includes a housing unit 110 and a cover unit 120 .

The housing part 110 has a predetermined length and volume and is formed in a hollow hexahedral shape inside to form the outer shape of the recovery part 100 . In addition, preferably, a chip conveyor may be installed inside the recovery unit. That is, a caterpillar-shaped chip conveyor is installed inside the housing in the form of a conveyor belt, and the chips are rotated by a driving motor, etc. to move the chips, and the cutting oil flows to the filtering unit through the flow passage of the conveyor belt and the housing. In addition, although not shown in the drawings, a chip bucket for storing chips collected through a chip conveyor may be installed on one side of the housing unit.

The cover part 120 is detachably coupled to the upper part of the housing part 110 . That is, the cover part 120 is integrally formed to correspond to the shape of the upper surface of the housing part, or is formed in plurality separately and is detachably coupled to the upper part of the housing part to flow inside the housing part and various equipment installed inside the housing part. Prevents contamination of cutting oil. However, as the cover part is detachably coupled and installed on the upper part of the housing part, it is possible to improve the productivity by promoting the convenience of the operator and reducing the maintenance time.

The filtering unit 200 is installed on one side of the recovery unit 100 so as to communicate with the recovery unit, and functions to filter the cutting oil introduced through the recovery unit. 1 to 6, the filtering unit 200 and the right side of the collecting unit are shown to be in communication with the collecting unit, but the present invention is not limited thereto. can That is, the filtering unit 200 is formed to communicate with the recovery unit so that the recovery unit can receive the cutting oil used in machining the workpiece through the recovery unit 100 .

The circulation unit 300 is installed on one side of the filtration unit 200 to communicate with the filtration unit to circulate the cutting oil filtered through the filtration unit to the workpiece processing site. That is, the circulation unit 300 receives and stores the cutting oil in a state in which coarse chips and fine chips are filtered through the filtering unit and other oil has been removed as much as possible from the filtering unit, and the cutting oil is again supplied when processing the workpiece through the control of the numerical control unit, etc. It performs the function of recirculating and supplying it to the processing part.

1 to 6 , the circulation unit 300 includes a storage unit 310 and a circulation pump 320 . In addition, as shown in FIGS. 1 to 6 , the circulation unit 300 may further include a sub oil skimmer 330 and a sensing unit 340 .

The storage unit 310 stores the cutting oil filtered through the filter unit 200 . That is, the storage unit 310 is generally hexahedral or to have a sufficient volume to store the cutting oil in order to supply the cutting oil filtered through the filtering unit 200 to the machining part during the processing of the workpiece under the control of the numerical control unit. It is formed in a cylindrical shape to store cutting oil.

The circulation pump 320 supplies the cutting oil stored in the storage unit 310 to the processing part of the workpiece. That is, the circulation pump 320 generates a flow power for supplying the cutting oil stored in the storage unit 310, which has been filtered through the filtering unit, to the processing portion during workpiece processing under the control of the numerical control unit, and supplies the cutting oil to the processing portion. do.

A sub oil skimmer 330 may be additionally installed in the storage unit 310 . Accordingly, as will be described later, the oil skimmer installed in the collecting area between the blocking unit and the collecting unit is used to secondaryly remove the other oil firstly collected through the collecting unit, and the other oil contained in the cutting oil flowing into the storage unit is used as a sub oil skimmer. It can be removed tertiarily to increase the lifespan of the cutting oil, increase the machining precision by improving the performance of the cutting oil, and reduce the maintenance time, thereby maximizing productivity by reducing the non-working time of the machine tool.

The sensing unit 340 is installed inside the storage unit 310 . Through the sensing unit 340, the level of the cutting oil stored in the storage unit 310 is transmitted to the numerical control unit to notify the operator when to replenish or replace the cutting oil, thereby preventing damage to the workpiece or tool due to lack of cutting oil, It can improve the stability and reliability of the machine tool and promote the convenience of the operator.

The filtering unit of the cutting oil tank device of the machine tool according to the present invention converts the flow direction of the cutting oil flowing through the filtering unit to separate chips contained in the cutting oil, and removes other oil contained in the cutting oil by the specific gravity difference between the cutting oil and other oil flowing through the filtering unit. collect That is, the filtration unit 200 primarily separates the coarse chips contained in the cutting oil flowing into the filtration unit through the recovery unit and the filter unit to be described later, and the structure of the partition wall portion, the guide portion, the blocking portion, the collecting portion, and the stepped portion Through the optimized arrangement, the flow path for the coolant flowing into the filter section through the inlet section of the stepped section is formed in a “R” shape, and the flow direction of the coolant is changed in the filter section 5 times as a whole, so that the microchips contained in the cutting oil are In addition to secondary separation of the other oil, the other oil is primarily collected at the collecting unit due to the structure and arrangement of the blocking unit and the collecting unit and the specific gravity difference between water-soluble cutting oil and other oil, and the collected other oil is removed with an oil skimmer. It is possible to increase the lifespan, reduce the filtration time of the cutting oil, reduce the maintenance cost and time of the machine tool, increase the productivity, and maximize the machining precision by improving the performance of the cutting oil.

1 to 6, the filtering unit 200 of the coolant tank device 1 of the machine tool according to the present invention is a base portion 210, a bulkhead portion 220, a guide portion 230, a blocking portion 240 , a collecting unit 250 , and a stepped unit 260 . In addition, as shown in Figs. 1 to 6, the filtering unit 200 of the cutting oil tank device 1 of the machine tool according to the present invention is a filter unit 270, a cover unit 280, and / or an oil skimmer ( 290) may be further included.

The base part 210 is formed in a hexahedral shape having a space therein to form the outer shape of the filtering part and the circulation part. Although not necessarily limited thereto, the base part and the housing part may be integrally formed in order to prevent leakage of cutting oil and reduce manufacturing cost.

The partition wall part 220 is installed inside the base part to change the flow direction of the cutting oil flowing through the filter part before the coolant flowing into the filtering part 200 flows out to the circulation part 300 . That is, the partition wall 200 primarily converts the flow direction of the cutting oil when the cutting oil introduced into the filtering unit flows. Specifically, the partition wall part 220 is installed inside the base part 210 to separate the filtration part and the circulation part, and forms a third flow path (③ in FIG. 6) through which the cutting oil flows, and the filter part together with the guide part to be described later. A fine chip separation region (region E in FIGS. 2, 3, and 6) is formed by precipitating the passed fine chips to separate them.

Although not necessarily limited thereto, the barrier rib 220 is formed in an overall “L” shape. Specifically, as shown in FIGS. 2 to 6 , the partition wall 220 includes a shielding part 221 and an extension part 222 .

One side of the shielding part 221 is coupled to the base part 210 and is formed to extend in the horizontal direction (X-axis direction). That is, as shown in FIGS. 2, 3 and 6 , the shielding part 221 extends in the horizontal direction (X-axis direction) of the left side of the shielding part 221 in the internal horizontal direction (X-axis direction) of the base part with the right end coupled to the inside of the base part 210 . It is formed to partition the filtering part and the circulation part in the interior of the base part.

The extension part 222 is formed to extend in the vertical direction (Y-axis direction) from the other side of the shielding part 221 . That is, as shown in FIGS. 2, 3 and 6 , the extension 222 is bent in the vertical direction (Y-axis direction) at the right end of the shielding portion to extend in the vertical direction so as to be closer to the partitioning portion of the guide portion to be described later. do.

Although not necessarily limited thereto, preferably, the shielding portion and the extension portion are formed of a metal plate having a predetermined thickness and a length in the height direction.

The guide part 230 is installed inside the base part to face the partition wall part while crossing each other in order to change the flow direction of the cutting oil introduced into the filtering part 200 . That is, the guide part 230 is installed inside the base part 210 to form a filter area (region D in FIGS. 2, 3 and 6) and a microchip separation area (E in FIGS. 2, 3, and 6). region), and form a first flow path and a second flow path (①, ② in FIG. 6) through which the cutting oil flows inside the filtering unit together with the stepped portion.

Although not necessarily limited thereto, the guide part 230 is formed in an overall “L” shape. Specifically, as shown in FIGS. 2 to 6 , the guide part 230 includes a partitioning part 231 and a bending part 232 .

The partition part 231 is formed to extend in the horizontal direction so that one side is coupled to the base part and parallel to the shielding part in the horizontal direction (X-axis direction). That is, as shown in FIGS. 2, 3 and 6 , the partition part 231 has a left end in a state where the right side is coupled to the inside of the base part 210 and the left end is installed in the horizontal direction (X-axis direction) inside the base part. ) to divide the filter area and the microchip separation area.

The bent portion 232 is formed to extend in the vertical direction (Y-axis direction) so as to face each other in the vertical direction with the extension 222 from the other side of the partition portion 231 . That is, as shown in FIGS. 2, 3 and 6 , the bent part 232 is bent in the vertical direction (Y-axis direction) at the left end of the partition part to face each other in the vertical direction with the extension part, while forming the shielding part and the shielding part. It is formed extending in the vertical direction so as to be closer.

Although not necessarily limited thereto, preferably, the shielding portion and the extension portion are formed of a metal plate having a predetermined thickness and a length in the height direction.

The blocking part 240 is parallel to the collecting part in the horizontal direction (X-axis direction) between the collecting part 250 and the guide part 230 and is inside the base part 210 so as to be coupled with a part of the partition wall part 220 . is installed That is, the blocking part 240 is installed between the collection part and the guide part so that the left end, which is one side of the blocking part, is coupled with the extension part of the partition wall so that it is parallel to the collection part in the horizontal direction, and the right end of the other side of the blocking part is coupled with the inside of the base part. do. Specifically, the blocking part 240 is installed inside the base part 210 to form a microchip separation area (region E in FIGS. 2, 3, and 6) together with the partition wall part and the guide part, and together with the collecting part. A collection area (region F in FIGS. 2, 3, and 6) is partitioned. In addition, the blocking part 240 forms a fourth flow path (④ in FIG. 6 ) through which the cutting oil flows inside the filtering part together with the dividing part of the guide part.

In addition, as shown in Figure 5, the blocking portion 240 is formed so that the height direction length (H1) of the blocking portion has a predetermined payoff. As the blocking portion 240 is formed to have a height direction length H1 of the blocking portion, a flow hole 241 for flowing the cutting oil from the microchip separation area to the collecting area is formed. As such, the cutting oil flows from the fourth flow path to the fifth flow path through the flow hole in the filter unit. In addition, the blocking portion 240 is formed to have a length H1 in the height direction, and as the flow hole is formed at the top of the blocking portion, the fine chips deposited in the fine chip separation area are prevented from passing to the collecting area, thereby filtering the cutting oil. performance can be improved.

The collecting unit 250 is adjacent to the circulation unit 300 and is installed inside the base unit 210 so as to couple with a part of the bulkhead unit 220 so that the cutting oil flowing through the filtering unit 200 flows into the circulation unit before the cutting oil flows out into the circulation unit. It performs the function of collecting other milk contained in That is, the collecting unit 250 is installed in the interior of the base unit so as to be coupled with the extension of the bulkhead while being adjacent to and communicating with the circulation unit to partition the filtering unit and the circulation unit together with the bulkhead. In addition, the collecting unit 250 is installed to face the blocking unit at a predetermined distance in the vertical direction and to face in the vertical direction, so that the cutting oil flowing inside the filtering unit passes through the fourth flow path of the fine chip removing area (E) and the collecting area (F). ) to form a fifth flow path (⑤ in FIG. 6) together with the blocking part.

Although not necessarily limited thereto, the collection unit 250 is generally formed in a “∩” shape. Specifically, as shown in FIGS. 2 to 6 , the collecting unit 250 includes a body unit 251 and an outlet unit 252 .

The body part 251 is formed to extend in the horizontal direction (X-axis direction) so that one side is coupled to the extension part 222 and the other side is coupled to the base part 210 . The body part 251 forms the outer shape of the collecting part. Specifically, as shown in FIGS. 2, 3 and 6, the main body 231 is spaced apart from the blocking part by a predetermined distance in the vertical direction and the left end of one side of the body part is coupled with the extension part of the partition wall so as to be parallel to the horizontal direction. and the right end, which is the other side of the main body, is installed in combination with the inside of the base. Specifically, the circulation part and the filtration part are partitioned by the main body part and the partition wall part, and the collection area (region F in FIGS. 2, 3, and 6) is formed by the main body part and the blocking part.

Although not necessarily limited thereto, preferably, the body portion is formed of a metal plate having a predetermined thickness, a length in a height direction, and a length in a horizontal direction.

The outlet 252 is openly formed in the lower portion of the main body to flow the cutting oil flowing through the collecting area F to the circulation unit 300 . As the outlet 252 is formed in the lower portion of the main body, when the circulation pump operates, the cutting oil flowing through the outlet through the collecting area flows out to the circulation by the pressure of the circulation pump.

In addition, a fifth flow path (⑤ in FIG. 6 ) flowing through the collection area is formed by the body part, the outlet part, and the blocking part. That is, the fifth flow path is formed by the flow hole 241 and the outlet 252 of the blocking part. In addition, as shown in FIG. 4 , the outlet 252 of the collecting unit 250 is formed in a metal plate shape so that the length H2 in the height direction of the outlet has a constant cap in the height direction. As the outlet portion 252 is formed to have a length H2 in the height direction of the outlet portion, a fifth flow path for flowing the cutting oil from the collecting area to the circulation portion is formed.

As such, an outlet is formed in the lower part of the body in the collection area, and as the fifth flow path flows the cutting oil to the circulation through the outlet, the cutting oil flows to the circulation due to the difference in specific gravity between the water-soluble cutting oil and other oil, and the other oil flows horizontally to the main body. clogged and collected in the collection area.

Also, preferably, the height direction length H1 of the blocking portion is formed to be larger than the height direction length H2 of the outlet portion (H1>H2). Prevents overload of the circulation pump by passing through the 4th flow path to the 5th flow path, prevents the microchips deposited in the microchip separation area from being lost to the collection area due to a decrease in the flow rate, and other oil collected in the collection area goes to the circulation unit It is possible to maximize the efficiency of the filtration part by blocking the flow from flowing through, to reduce the coolant filtration time, to increase the lifespan of the coolant, to maximize the performance of the coolant and to improve the machining quality.

An oil skimmer 290 is installed between the blocking unit 240 and the collecting unit 250 . That is, the oil skimmer 290 is installed in the collection area (F) having a limited space and volume to prevent overload, reduce maintenance costs and time through rapid removal of other oil, prevent equipment damage, and reduce non-working time Thus, productivity can be maximized.

The stepped part 260 is adjacent to the recovery part 100 to introduce the cutting oil recovered through the recovery part 100 into the filtering part 200 and is formed to extend stepwise in the horizontal direction. That is, as shown in FIG. 2 , the stepped portion 260 is installed adjacent to the recovery unit 100 to partition the filtering unit and the recovery unit, and is formed to extend stepwise in the horizontal direction to form an inlet 261 on the upper portion of the stepped portion. A first flow path (① in FIG. 6) is formed together with the guide part to flow the cutting oil that has passed through the recovery part and flowed into the filtering part by forming a A filter region (D in FIGS. 2, 3, and 6) that primarily filters the chip is formed.

The stepped portion 260 is formed as low as possible to introduce the cutting oil recovered through the recovery unit into the filtering unit 200 as much as possible. That is, the height direction length H3 of the inlet portion 261 that is openly formed at the upper portion of the stepped portion 260 is greater than the height direction length H1 of the blocking portion. (H3>H1) Accordingly, a relatively large amount of coolant is introduced into the filtration unit, and coarse chips are filtered through a filter unit, which will be described later.

The filter part 270 is detachably installed between the guide part 230 and the stepped part 260 . That is, the filter unit 270 is installed in the filter region D formed by the guide unit and the stepped unit, and forms a first flow path to primarily filter the cutting oil introduced into the filter unit.

The cover part 280 is detachably coupled and installed on the upper part of the base part 210 . That is, the cover part 280 is integrally formed to correspond to the shape of the upper surface of the base part, or is formed in plurality separately and is detachably coupled to the upper part of the base part to flow various equipment installed inside the base part and the inside of the base part. Prevents contamination of cutting oil. However, since the cover part is detachably coupled to the upper part of the housing part, it is possible to improve the productivity by promoting the convenience of the operator and reducing the maintenance time.

A cutting oil flow path and flow direction conversion and other oil collection and removal principles of the coolant tank device of a machine tool according to the present invention will be described with reference to FIGS. 1 to 6 .

As shown in FIG. 6 , the cutting oil used for machining the workpiece in the machining area is recovered through the housing 110 of the recovery unit 100 .

The cutting oil C flowing through the recovery part 100 passes through the inlet 261 of the stepped part 260 and passes through the filter part 270 installed in the filter area D to filter out thick chips. That is, the cutting oil primarily flowing through the recovery unit 100 changes the flow direction to 1 to enter the first flow path (①) formed by the inlet portion 261 of the stepped portion 260 and the guide portion 230 . A primary transition point (C1 in FIG. 6 ) for switching to a car is formed. Specifically, as the cutting oil flowing in the horizontal direction through the recovery unit flows into the first flow path, the flow direction of the cutting oil is primarily converted to the vertical direction (see C1 in FIG. 6 ).

Thereafter, the cutting oil that has entered the first flow path (①) flows along the first flow path to flow through the filter area (D). Thereafter, a secondary switching point (C2 in FIG. 6 ) is formed in which the cutting oil flowing along the first flow path switches the flow direction to the second to enter the second flow path (②) formed by the stepped part and the guide part. Specifically, in order to flow through the first flow path and enter the second flow path, the flow direction of the cutting oil is secondarily switched to the horizontal direction (see C1 in FIG. 6 ).

Thereafter, the cutting oil entering the second flow path (②) passes through the filter area (D) and enters the fine chip separation area (E) due to a change in flow velocity, and continues into the second flow path, the third flow path, and the fourth flow path. The flow direction of the cutting oil flowing in the vertical direction to enter the third flow path formed by the partition wall portion and the guide portion is 3 A third turning point (C3 in FIG. 6) for switching to a car is formed. Specifically, in order to flow through the second flow path and enter the third flow path, the flow direction of the cutting oil is tertiarily converted to a vertical direction (see C3 in FIG. 6 ).

After that, the cutting oil that has entered the third flow path (③) continues to flow in the fine chip separation region (E), and the flow of cutting oil that flows in the vertical direction to enter the fourth flow path formed by the partition wall portion and the guide portion A quaternary turning point (C4 in FIG. 6 ) where the direction changes to the quaternary is formed. Specifically, in order to flow through the third flow path and enter the fourth flow path, the flow direction of the cutting oil is converted to a horizontal direction (see C4 in FIG. 6 ).

Before the cutting oil flows from the fourth flow path to the fifth flow path, the microchips are prevented from overflowing into the collecting area of the collecting unit in a state in which the fine chips are deposited by the blocking unit.

Thereafter, the cutting oil entering the fourth flow path (④) flows from the fine chip separation region (E) to the collecting region in the horizontal direction to enter the fifth flow path formed by the flow hole of the outlet and the blocking unit. The flow direction of the flowing cutting oil forms a fifth switching point (C5 in FIG. 6 ) at which the flow direction is changed to the fifth. Specifically, the flow direction of the cutting oil is converted to the vertical direction in the fifth order to flow through the fourth flow path and enter the fifth flow path (see C5 in FIG. 6). In the cutting oil flowing from the filtering unit to the circulation unit through the outlet in the region, other oil is separated from the cutting oil and collected by the specific gravity difference through the structure of the main body and the outlet formed at the lower part of the main body. In addition, the oil skimmer is installed in the collection area to effectively remove the other oil collected, thereby increasing the lifespan of the cutting oil.

As such, the coolant tank device of the machine tool according to the present invention converts the flow direction of the cutting oil flowing through the filtering part through the structure and arrangement of the partition wall part, the guide part, and the blocking part in the machine tool using the water-soluble coolant, so that the fine particles contained in the cutting oil The chips are precipitated and separated, and other oil is effectively first collected from the cutting oil through the specific gravity difference before flowing to the circulation unit through the structure and arrangement of the collecting unit. Not only does it increase the lifespan of the cutting oil, but it also prevents overload or reduction in operating performance of the oil skimmer, and also increases the life of the oil skimmer, thereby reducing the maintenance cost and maintenance time of the machine tool and reducing the machining cost.

In addition, the coolant tank device of the machine tool according to the present invention removes fine chips through the filter unit as well as the flow direction conversion of the cutting oil, and effectively collects other oil contained in the cutting oil and easily stirs the corrosion of the cutting oil. to prevent frequent replacement of cutting oil by minimizing The productivity of the machine tool can be improved by reducing the non-working time, such as reducing the time to change the coolant.

In the detailed description of the present invention described above, it has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those having ordinary knowledge in the technical field of the present invention described in the claims to be described later 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: coolant tank device, 100: recovery part,
110: housing part, 120: cover part,
200: filtration unit, 210: base unit,
220: bulkhead part, 230: guide part,
240: blocking unit, 250: collecting unit,
260: stepped part, 270: filter part,
280: cover part, 290: oil skimmer,
300: circulation unit, 310: storage unit,
320: circulation pump, 330: sub oil skimmer,
340: sensing unit.

Claims (15)

a recovery unit for recovering cutting oil and chips used during workpiece processing;
a filtration unit installed on one side of the recovery unit to communicate with the recovery unit to filter the cutting oil introduced through the recovery unit; and
A circulation unit installed on one side of the filtering unit to communicate with the filtering unit and circulating the cutting oil filtered through the filtering unit to the workpiece processing part; including,
The filter unit,
Cutting oil tank of a machine tool, characterized in that by changing the flow direction of the cutting oil flowing through the filtering unit, chips contained in the cutting oil are separated, and other oil contained in the cutting oil is collected by the specific gravity difference between the cutting oil flowing through the filtering unit and the other oil. Device.
According to claim 1,
The filter unit,
base part;
a partition wall part installed inside the base part to change a flow direction of the cutting oil flowing through the filter part before the cutting oil flowing into the filter part flows out to the circulation part; and
and a guide part installed inside the base part to alternately face the partition wall part in order to change the flow direction of the coolant flowing into the filtering part.
3. The method of claim 2,
The filter unit,
It is adjacent to the circulation part and is installed inside the base part so as to be coupled with a part of the partition wall part and collects other oil contained in the cutting oil before the cutting oil flowing through the filtering part flows into the circulation part; Coolant tank device for machine tools.
4. The method of claim 3,
The filter unit,
and a blocking part installed inside the base part between the collection part and the guide part, which is parallel to the collection part in the horizontal direction and is installed inside the base part so as to engage a part of the partition wall part.
5. The method of claim 4,
The filter unit,
The cutting oil tank device of a machine tool comprising a; a stepped portion adjacent to the recovery portion and extending stepwise in a horizontal direction in order to introduce the coolant recovered through the recovery portion into the filtering portion.
6. The method of claim 5,
The filter unit,
The cutting oil tank device of a machine tool comprising a; a filter part detachably installed between the guide part and the stepped part.
6. The method of claim 5,
The partition wall portion,
a shield having one side coupled to the base and extending in a horizontal direction; and
The coolant tank device of a machine tool comprising a; an extension formed extending in a vertical direction from the other side of the shielding part.
8. The method of claim 7,
The collection unit,
a body part having one side coupled to the extension part and extending in the horizontal direction so that the other side is coupled to the base part; and
The coolant tank device of a machine tool comprising a; an outlet formed open at the lower part of the main body to flow the coolant to the circulation part.
9. The method of claim 8,
The guide unit,
a partition part having one side coupled to the base part and extending in a horizontal direction to be parallel to the shielding part in a horizontal direction; and
The cutting oil tank device of a machine tool comprising a; a bent portion extending in the vertical direction to face the extension from the other side of the partition portion.
9. The method of claim 8,
The cutting oil tank device of the machine tool, characterized in that the height direction length of the blocking portion is formed to be larger than the height direction length of the outlet.
9. The method of claim 8,
A cutting oil tank device for a machine tool, characterized in that the height direction length of the inlet part openly formed on the upper part of the stepped part is formed to be larger than the height direction length length of the blocking part.
5. The method of claim 4,
The filter unit,
and an oil skimmer installed between the blocking part and the collecting part.
5. The method of claim 4,
The filter unit,
The coolant tank device of a machine tool comprising a; a cover part detachably coupled to the upper part of the base part.
14. The method according to any one of claims 1 to 13,
The recovery unit,
housing unit; and
The coolant tank device of a machine tool comprising a; a cover part detachably coupled to the upper part of the housing part.
14. The method according to any one of claims 1 to 13,
The circulation unit,
a storage unit for storing the cutting oil that has passed through the filtering unit; and
A coolant tank device for a machine tool comprising a; a circulation pump for supplying the cutting oil stored in the storage unit to the machining part.

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