TWI453088B - Cutting fluid filter - Google Patents

Description

Cutting fluid filter

The present invention relates to a cutting fluid filtering device having a guide housing and a recovery tank. In particular, when a cutting fluid flow path that is meandering in the horizontal direction is formed in the recovery tank so that the cutting fluid after the cutting process flows into the cutting fluid flow path, the cutting dust in the cutting fluid can be precipitated to form a cutting Liquid filtration device.

Generally, when cutting is performed by a working machine, cutting is performed by a tool while supplying a cutting fluid to a cutting portion of a metal workpiece. The cutting fluid is used to cool the tool that generates heat due to frictional heat during cutting to improve the life of the tool and the machining accuracy of the workpiece. The cutting fluid used in the cutting process contains foreign matter such as cutting dust generated during cutting. The cutting fluid filtering device has a plurality of functions as will be described later. As a first function, the cutting fluid filtering device is used to recover the cutting fluid after cutting. As a second function, the cutting fluid filtering device filters the collected cutting fluid inside and separates the cutting dust in the cutting fluid. As a third function, the cutting fluid filtering device is for circulating the filtered cutting fluid to the working machine.

For example, Japanese Patent No. 3952160 discloses a cutting fluid filtering device including a funnel member (corresponding to the guide casing of the present invention) and a cutting fluid tank. The funnel member is a member for causing the cutting fluid containing the cutting dust to flow into the upper and lower openings. Cutting fluid tank on it The face side has an open hole, and a funnel member is mounted in the open hole. The cutting fluid filtering device is provided with a metal mesh filter at the left and right end portions of the cutting fluid tank. The filter divides the cutting fluid tank into a plurality of sections. The plurality of portions are a cutting dust collecting portion (corresponding to the collecting tank of the present invention) for recovering the cutting fluid containing the cutting dust, and a cutting fluid accumulating portion for accumulating the cutting fluid filtered by the filter ( It is equivalent to the accumulation tank of the invention of the present invention).

The funnel member is attached to the lower surface of the inclined plate portion, and is provided with a plurality of upper partition plates which protrude vertically downward at appropriate intervals. The bottom of the cutting dust collecting portion is provided with a plurality of lower-area partitions that protrude vertically upward. In a state in which the funnel member is attached to the opening hole of the cutting liquid tank, a gap exists between the lower end portion of each upper partition plate and the bottom portion of the cutting and collecting portion. The upper end portion of each lower partition plate and the inclined plate portion of the funnel member are present in the gap. In the conventional cutting fluid filtering device, a fluid passage for winding the cutting fluid up and down is formed between the inclined plate portion of the funnel member and the bottom of the cutting dust collecting portion.

The cutting dust that has flowed into one of the cutting liquid tanks is precipitated while flowing through the fluid passage of the cutting dust collecting portion. The cutting fluid flows into the cutting fluid accumulating portion through the filter after flowing through the fluid passage. When the cutting fluid passes through the filter, the filter separates the dust remaining in the cutting fluid from the cutting fluid, and filters the cutting fluid.

When a large amount of cutting dust is deposited on the bottom of the cutting dust collecting portion, the cutting fluid flowing in the fluid passage may transport the accumulated cutting dust to the vicinity of the filter. When the cutting dust is clogged in the mesh of the filter, the filter performance of the filter is reduced. In order to prevent a decrease in the filtration performance of the filter, the operator must periodically clean the bottom of the cutting dust collecting portion to remove the accumulated cutting dust.

In the cutting fluid filtering device of Japanese Patent No. 3952160, since a plurality of lower partition plates are fixed to the bottom of the cutting dust collecting portion, the lower partition plate may hinder the operation when cleaning the bottom of the collecting tank.

Further, the height of the cutting fluid filtering device affects the height of the discharge port through which the cutting fluid is discharged from the working machine. The cutting fluid filter used in existing working machines cannot raise its height. Therefore, in the conventional cutting fluid filtering device, since the entire length of the fluid passage cannot be increased, there is a problem that the cutting dust in the cutting fluid does not settle to the filter.

An object of the present invention is to provide a cutting fluid filtering device which can efficiently remove cutting dust from a cutting fluid after cutting, and can efficiently clean the bottom of the recovery tank.

In order to achieve the above object, the cutting fluid filtering device according to the first aspect of the invention is provided with a guide housing having a lead-out portion for filtering a cutting fluid containing cutting dust; and the guide housing is mounted On the upper side, and from the lead-out portion of the guide housing, a recovery tank having an open upper surface containing cutting fluid containing cutting dust, and a cutting fluid filtering device, The receiving groove includes a flow path forming body having a flow path for forming a cutting fluid, and the flow path forming body has a connecting plate parallel to a side wall surface of the collecting groove, and one end of which is fixed to the connecting plate, and the connecting plate a plurality of partitions disposed at right angles and at appropriate intervals; the plurality of partitions forming a notch at an end portion on a side different from an end portion of the adjacent partition.

According to the cutting fluid filtering device of the first aspect of the patent application, the flow path of the cutting fluid is meandered in the horizontal direction by the notch portion, and the entire length of the flow path is made longer. Therefore, during the flow of the cutting fluid in the horizontal meandering flow path, the cutting dust having a larger specific gravity than the cutting fluid in the cutting fluid is deposited at the bottom of the recovery tank, and the cutting powder in the cutting fluid can be effectively separated. Chips.

The flow path forming body of the cutting fluid filtering device of the second aspect of the patent application is detachable from the recovery tank. By doing so, the operator can easily remove the flow path formation body from the recovery tank, clean the bottom of the recovery tank, and efficiently remove the cutting dust deposited on the bottom of the recovery tank.

The cutting fluid filtering device according to the third and fourth aspects of the patent application is provided with a filter for capturing cutting dust in the notch portion of the partition plate.

When the cutting fluid flows in a flow path that is meandering in the horizontal direction, the cutting fluid passes through the filter of the notch portion. For this reason, the filter separates and removes minute cutting dust which is not precipitated in the cutting fluid while the cutting fluid flows in the flow path.

The cutting fluid filtering device according to the fifth aspect of the invention is provided with a pair of flow path forming bodies; the pair of connecting plates are parallel to the wall surface facing the collecting groove, and are fixedly connected to the partition plate of one of the connecting plates. Fixedly followed The partition plates of the other side connecting plates are disposed alternately, and the notch portions of the partition plates located in the respective regions are formed at end portions on the opposite side to the connecting plates to which the partition plates are fixed.

By forming the flow path formation body in a pair, each flow path formation body can be downsized. Because of this, the operator can more easily remove the flow path forming body from the recovery tank when cleaning the bottom of the recovery tank.

[Best form for carrying out the invention]

Hereinafter, the best mode for carrying out the invention will be described.

[Examples]

Hereinafter, embodiments of the invention will be described in accordance with the drawings. As shown in FIGS. 1 and 2, the cutting fluid filter device 1 includes a guide housing 2 and a cutting fluid tank 10.

As shown in FIG. 1, the guide housing 2 is provided with a bottom wall portion 3, a rear wall portion 4, a right side wall portion 5, a left side wall portion 6, and a mounting portion 7. The guide housing 2 is open to the upper surface and the front surface. The bottom wall portion 3 is inclined more downward toward the rear. The cutting fluid that has flowed into the guide casing 2 flows toward the rear of the bottom wall portion 3 by the inclination of the bottom wall portion 3. The bottom wall portion 3 is provided with a cutting dust receiving plate 8 to be described later at a central portion thereof. The cutting dust carrier 8 has a plurality of through holes (for example, a diameter of about 3.0 mm). The working machine system inserts the cutting fluid discharge portion 41 (see FIG. 7) into the mounting portion 7.

The rear wall portion 4 is inclined more toward the rear toward the rear. Rear wall portion 4, A cutting dust receiving plate 8 for filtering the coarse liquid of the cutting fluid containing the cutting dust is provided in the central portion thereof. The cutting dust carrier 8 corresponds to the lead-out portion. When the cutting fluid after the cutting process flows into the guide casing 2, the cutting dust board 8 of the bottom wall portion 3 and the cutting dust board 8 of the rear wall portion 4 are the cutting powder mixed in the cutting fluid. Among the chips, the cutting dust larger than the through hole is separated.

Next, the cutting fluid tank 10 will be described. As shown in Fig. 1 and Fig. 2, the cutting fluid tank 10 is provided with a recovery tank 11 and storage tanks 12 and 13, and has a substantially box shape in which a part of the upper surface is opened. The recovery tank 11 is open to the upper surface, and the guide casing 2 is attached to the upper surface side. In the recovery tank 11, the cutting fluid containing the cutting dust flows into the through hole of the cutting dust receiving plate 8 of the guide casing 2. The two accumulation tanks 12 and 13 are in communication with the recovery tank 11. The cutting fluid tank 10 is provided at a portion close to the left and right ends of the inside thereof, and each has a pair of metal mesh filters 18. The pair of filters 18 partitions the cutting fluid tank 10 into three spaces such as the recovery tank 11, the accumulation tank 12, and the accumulation tank 13. The recovery tank 11 is located below the guide housing 2. The accumulation tank 12 is located on the right side of the recovery tank 11. The accumulation tank 13 is located on the left side of the recovery tank 11. The cutting fluid tank 10 is provided with four casters 17 for moving the cutting fluid filter device 1 in the vicinity of the four corner portions.

The recovery tank 11 has a first flow path formation body 20 and a second flow path formation body 30 installed therein. The first flow path formation body 20, the second flow path formation body 30, and the plurality of notch portions 23 and 33 form a cutting fluid flow path 40 (a flow path of the cutting fluid) that is meandering in the horizontal direction. As shown in FIG. 3, the first channel forming body 20 is detachably attachable to the collecting tank 11. First flow path forming body 20, comprising a connecting plate 21 and a 4-piece partition 22 . The web 21 is parallel to the surface of the rear side wall 52 of the recovery tank 11. The partition plate 22 has an elongated plate shape and is a right angle with respect to the connecting plate 21. The arrangement intervals of the four-zone partitions 22 are equal. Each of the four-zone partitions 22 is fixed to the web 21 at one end. The four-zone partition plate 22 is formed at each of its other ends with a notch portion 23 which is vacant from the upper end to the lower end portion.

Each of the notch portions 23 is provided with a filter 24. The filter 24 is a metal plate through which a plurality of through holes are bored to capture cutting dust. The diameter of the through hole of the filter 24 is smaller than the through hole of the cutting dust board 8. The diameter of the through hole of the filter 24 is, for example, about 0.5 to 1.5 mm.

As shown in FIG. 4, the second flow path formation member 30 is detachably attachable to the recovery tank 11. The second flow path formation body 30 is provided with a connection plate 31 and a three-piece partition plate 32. The connecting plate 31 is parallel to the front side wall 51 of the recovery tank 11. The partition plate 32 has an elongated plate shape and is a right angle with respect to the connecting plate 31. The arrangement intervals of the three-zone partitions 32 are equal. Each of the three-zone partitions 32 is fixed to the web 31. The three-zone partition plate 32 is formed at each of its other ends with a notch portion 33 which is vacant from the upper end to the lower end portion.

The partition plates 32 on the left and right sides of the three-zone partition plates 32 are respectively provided with filters 34 in the notch portions 33 thereof. The filter 34 is a metal plate through which a plurality of through holes are bored for capturing cutting dust. The diameter of the through hole of the filter 34 is smaller than the through hole of the cutting dust board 8. The diameter of the through hole of the filter 34 is, for example, about 0.5 to 1.5 mm. The partition plates 32 located on the left and right sides are provided with a slat plate 35 extending in the center in the left-right direction at portions other than the notch portion 33 at the upper end. Shelter plate 35 It is located below the cutting dust board 8 of the bottom wall portion 3. The slats 35 are inclined toward the lower portion of the partition plate 32 toward the center, and are used to guide the cutting fluid passing through the cutting dust board 8 of the bottom wall 3 to the center side in the left-right direction of the recovery tank 11 (cutting fluid) The upstream side of the flow path 40).

In the second diagram, as shown in Fig. 5, the connecting plate 21 of the first channel forming body 20 and the connecting plate 31 of the second channel forming body 30 are parallel to the opposing side wall faces of the collecting groove 11. Loaded. The front end of the partition plate 22 of the first flow path forming body 20 is a connecting plate 31 that is in contact with the second flow path forming body 30, respectively. The front end of the partition plate 32 of the second flow path forming body 30 is a connecting plate 21 that is in contact with the first flow path forming body 20, and the partition plate 32 on the left and right sides of the three-piece partitioning plate 32, and four sections. The two partial partition plates 22 on the center side in the left-right direction of the partition plate 22 are alternately disposed. Since the widths of the right and left sides of the connecting plates 21 and 31 are slightly smaller than the width of the left and right of the collecting groove 11, the connecting plates 21 and 31 do not move in the left and right direction with respect to the side wall surface of the collecting groove 11. .

The cutting fluid flow path 40 will be described. As shown in FIG. 2, FIG. 5, and FIG. 6, the cutting fluid flow path 40 is formed by the bottom wall portion 3 of the guide casing 2, the bottom of the recovery tank 11, and the partition plates 22 and 32 adjacent to each other. It is formed in the entire area of the recovery tank 11. The cutting fluid flowing in from the guide housing 2 flows into the cutting fluid flow path 40. In the first channel forming body 20 and the second channel forming body 30, the notch portions 23 and 33 of the adjacent partition plates 22 and 32 are end portions which are located on the opposite sides of each other. Therefore, the cutting fluid flow path 40 communicates in a meandering manner in the horizontal direction, and the entire length thereof is longer than the flow path in the upper and lower directions.

While the cutting fluid flows while flowing horizontally in the cutting fluid flow path 40, the cutting dust having a larger specific gravity than the cutting fluid in the cutting fluid is deposited on the bottom of the recovery tank 11. The flowing cutting fluid reaches the right and left end portions of the cutting fluid passage 40 and passes through a pair of filters 18 provided at the left and right end portions of the recovery tank 11. The diameter of the hole of the filter 18 is smaller than the diameter of the through hole of the filter 24 and the through hole of the filter 34. In this case, the pair of filters 18 removes the minute cutting dust which is not precipitated in the cutting fluid while the cutting fluid flows into the cutting fluid flow path 40, and purifies the cutting fluid.

The accumulation tank 12 on the right side of the recovery tank 11 is provided with two pumps 14 and 15. The accumulation tank 13 on the left side of the recovery tank 11 is provided with one pump 16. Each of the pumps 14 to 16 is for supplying the cutting fluid cleaned by the pair of filters 18 to the working machine. The pump 14~16 is composed of a gear pump or a scroll pump.

Next, the action and effect of the cutting fluid filtering device 1 will be described. As shown in FIGS. 5 to 7 , when the cutting fluid after the cutting flows from the cutting fluid discharge portion 41 of the working machine toward the bottom wall portion 3 of the guide housing 2 , the cutting liquid is provided on the bottom wall portion 3 and the rear wall. The cutting dust board 8 of the portion 4 filters the cutting fluid with a coarse hole. The cutting fluid after the cutting dust larger than the through hole of the cutting dust board 8 is removed and flows into the recovery tank 11.

The cutting fluid that has flowed into the recovery tank 11 is a portion of the cutting fluid flow path 40 that is located at the center portion in the left-right direction that is further away from the pair of filters 18 by the slats 35. The flowing cutting fluid flows toward the left and right accumulation grooves 13 and 12 along the cutting fluid flow path 40, and faces horizontally. The direction snakes flowing. During the flow of the cutting fluid along the cutting fluid flow path 40, the cutting dust having a larger specific gravity than the cutting fluid in the cutting fluid is deposited on the bottom of the recovery tank 11. The filters 24, 34 provided in the notch portions 23, 33 of the partition plates 22, 32 are used to remove the cutting dust.

The cutting fluid that has reached the right and left end portions of the cutting fluid flow path 40 passes through one of the right and left end portions of the recovery tank 11 to the filter 18, and then flows into each of the accumulation grooves 12 and 13. At this time, a pair of filters 18 are used to remove fine cutting dust from the cutting fluid. The cutting fluid after the cleaned up, which contains almost no cutting dust, flows into each of the accumulating tanks 12 and 13. Pump 14~16 to supply cutting fluid to the working machine.

In the cutting fluid filter device 1 configured as described above, since the cutting fluid can flow through the cutting fluid flow path 40 formed over a long length, the cutting fluid flows in the cutting fluid flow path 40, and the cutting fluid is allowed to flow. The cutting dust having a larger specific gravity than the cutting fluid is deposited on the bottom of the recovery tank 11, and the cutting dust in the cutting fluid can be effectively separated.

By forming the flow path formation body 1 by the pair of first flow path formation body 20 and the second flow path formation body 30, each flow path formation body can be downsized. The first channel forming body 20 and the second channel forming body 30 are detachable from the collecting tank 11 . By this, the operator can easily remove the first flow path formation body 20 and the second flow path formation body 30 from the recovery tank 11, and efficiently remove the cutting dust deposited on the bottom of the recovery tank 11. The notches 23 and 33 of the partition plates 22 and 32 are provided with filters 24 and 34. The filters 24 and 34 are capable of separating and removing minute cutting dust among the cutting fluids in which the cutting fluid does not precipitate during the flow of the cutting fluid flow path 40. Due to the filters 24, 34 It is disposed at the upper portion of the partition plates 22, 32, so that the accumulated cutting dust cannot pass through the filters 24, 34.

Next, a modified example in which the above embodiment is partially changed will be described.

(1) The cutting fluid flow path 40 that is meandering in the horizontal direction may be formed by one flow path forming body 50 (Fig. 8).

The flow path forming body 50 has a connecting plate 21 and a four-piece partition plate 22. The partition plate 22 has an elongated plate shape, and the intervals of the four-piece partition plates 22 are equal. The partition plate 22 has its one end fixed to the connecting plate 21 at a right angle. The notch portions 23 of the adjacent partition plates 22 are end portions which are located on opposite sides of each other. The notch portion 23 is provided with a filter 24, respectively. Further, the number of the partition plates 22 is not necessarily four, as long as it is a plurality of sheets.

(2) The number of the partition plates 22 of the first flow path formation body 20 is not necessarily four, and may be a plurality of sheets. The number of the partition plates 32 of the second flow path forming body 30 is not necessarily three, as long as it is a plurality of sheets.

(3) The filters 24 and 34 may be various types of filters such as a mesh-shaped filter, in addition to a through-hole that is often used in a metal plate.

(4) The filters 24 and 34 may not be attached to the notches 23 and 33.

(5) The notch portions 23 and 33 are formed to be a part of the lower end of the lower partition plates 22 and 32, but may be formed such that one of the lower ends is also removed. In this case, the lengths of the partition plates 22 and 32 are shorter than those shown in Figs. 3 and 4 .

1‧‧‧ cutting fluid filter

2‧‧‧Guide housing

3‧‧‧ bottom wall

4‧‧‧Back wall

5‧‧‧ right wall

6‧‧‧Left wall

7‧‧‧Installation Department

8‧‧‧Cleaning powder board

10‧‧‧ cutting fluid bath

11‧‧‧Recycling tank

12, 13‧‧‧ accumulation tank

14, 15, 16‧ ‧ pump

17‧‧‧ casters

18, 24, 34‧ ‧ filters

20‧‧‧First flow path formation

21, 31‧‧‧ link board

22, 32‧‧‧ partition

23, 33‧‧ ‧ gap

30‧‧‧Second flow path forming body

35‧‧ ‧ slab

40‧‧‧ cutting fluid flow path

41‧‧‧Cutting fluid discharge

50‧‧‧Flow formation

51‧‧‧ front side wall

52‧‧‧back side wall

Fig. 1 is a perspective view of a cutting fluid filtering device according to an embodiment of the present invention.

Fig. 2 is a perspective view of the cutting fluid filtering device in a state where the guide housing is removed.

Fig. 3 is a perspective view of the first flow path formation body.

Fig. 4 is a rear perspective view of the second flow path formation body.

Fig. 5 is a plan view showing the cutting fluid filtering device in a state where the guide housing is removed.

Fig. 6 is a sectional view taken on line VI-VI of Fig. 5.

Fig. 7 is a sectional view taken along line VII-VII of Fig. 5.

Fig. 8 is a perspective view of a flow path forming body in a modified example.

1‧‧‧ cutting fluid filter

10‧‧‧ cutting fluid bath

11‧‧‧Recycling tank

12, 13‧‧‧ accumulation tank

14, 15, 16‧ ‧ pump

17‧‧‧ casters

18, 34‧‧‧ filter

20‧‧‧First flow path formation

21‧‧‧Link board

22, 32‧‧‧ partition

30‧‧‧Second flow path forming body

35‧‧ ‧ slab

40‧‧‧ cutting fluid flow path

51‧‧‧ front side wall

52‧‧‧back side wall

Claims (5)

A cutting fluid filtering device comprising: a guide housing having a lead-out portion for filtering a cutting fluid containing cutting dust; and a guide housing attached to the upper surface side, and the guide housing The lead-out portion flows into a recovery tank having an open upper surface of the cutting fluid containing the cutting dust, and the cutting fluid filtering device is characterized in that the recovery tank includes a flow path forming body that forms a flow path for the cutting fluid; The flow path forming body includes: a connecting plate parallel to a side wall surface of the collecting groove; and a plurality of partition plates each having one end fixed to the connecting plate and disposed at right angles to the connecting plate at an appropriate interval; the plurality of the plurality of regions The partition plate has a notch portion formed at an end portion on a side different from an end portion of the partition plate adjacent to the partition. The cutting fluid filtering device according to the first aspect of the invention, wherein the flow path forming body is detachable from the recovery tank. The cutting fluid filtering device according to claim 1, wherein a filter for capturing cutting dust is provided in a notch portion of the partition plate. The cutting fluid filtering device according to claim 2, wherein a filter for capturing cutting dust is provided in a notch portion of the partition plate. The cutting fluid filtering device according to the first, second, third or fourth aspect of the invention, wherein the flow path forming body is a pair; a pair of webs that are parallel to the wall surface of the recovery tank; a partition that is fixedly attached to one of the webs and a partition that is fixedly attached to the other web are alternately disposed, and The notch portion of the partition plate located in each zone is formed at an end portion on the opposite side to the connecting plate to which the partition plate is fixed.