JP2010162613A - Device and method of chip treatment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simplified and space-saving chip treatment device. <P>SOLUTION: The chip treatment device separating chips from a dirty liquid which is a coolant mixed with the chips generated during workpiece machining includes: a cylindrical filter 20 vertically placed below an inflow port 11 of the dirty liquid; an opening/closing lid 22 provided on a bottom face 21 located in the lower end part of the cylindrical filter 20; a drive mechanism 30 rotating the cylindrical filter 20; a chip tank 40 provided below the cylindrical filter 20 and collecting chips; and a coolant recovery vessel 50 provided so as to surround the cylindrical filter 20 and recovering the coolant having passed through the cylindrical filter 20. The coolant passes through the cylindrical filter 20 from the inside to the outside by the centrifugal force of the rotating cylindrical filter 20 in the constitution of the device. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a chip processing apparatus and a chip processing method for separating chips from a dirty liquid in which chips generated during workpiece processing are mixed with coolant.

  A conventional chip processing apparatus is configured such that a scraping plate for scooping up dirty liquid is provided on a conveyor chain spanned from a dirty liquid storage tank to a chip discharge port located obliquely above. Things were common. In such a chip processing apparatus, by rotating the conveyor chain in the direction in which the scraping plate moves from the bottom of the storage tank to the discharge port, the scraping plate scrapes off the chips at the inclined portion and drops the coolant to cut it. Powder and coolant were separated, and only chips were discharged from the discharge port (see, for example, Patent Document 1).

JP 2002-177713 A

  However, in the conventional chip processing apparatus, the shape of the scraping plate and the discharge port is complicated, and fine precision is necessary for adjusting the scraping angle, and the conveyor chain is inclined obliquely upward with the horizontal portion in the storage tank. There is a problem that an inclined portion is required and a large installation space is required in the horizontal direction. Furthermore, the conveyor chain must be constantly driven with a large load, which has led to an increase in the size of the drive mechanism.

  Therefore, the present invention has been devised to solve the above-described problems, and an object thereof is to provide a chip processing apparatus and a chip processing method that can save space with a simple configuration.

  The invention according to claim 1 for solving the above-described problem is directed to a chip processing apparatus that separates the chips from a dirty liquid in which chips generated during workpiece processing are mixed in a coolant. A cylindrical filter placed vertically below, an opening / closing lid provided on the bottom surface of the cylindrical filter, a drive mechanism for rotating the cylindrical filter, and a lower side of the cylindrical filter. A chip tank that collects the chips, and a coolant recovery tank that is provided so as to surround the cylindrical filter and collects coolant that has passed through the cylindrical filter, and the coolant rotates the cylindrical filter The chip processing apparatus is configured to transmit from the inside to the outside by the centrifugal force.

  According to such a configuration, among the dirty liquid flowing in from the inlet, the coolant passes through the cylindrical filter by centrifugal force and flows to the coolant recovery tank, and the chips remain in the cylindrical filter. Powder and coolant can be separated. After the rotation of the cylindrical filter is finished, the chips fall downward by opening the opening / closing lid, and are collected in the chip tank. According to such this invention, while being able to isolate | separate a chip from a dirty liquid with a simple structure compared with the past, space saving of an apparatus can be achieved. In particular, the planar installation space only needs to have a plane area of the cylindrical filter and the surrounding coolant recovery tank.

  The invention according to claim 2 is the chip processing apparatus according to claim 1, further comprising an air blowing device that blows air from the coolant recovery tank side toward the cylindrical filter.

  According to such a configuration, the chips attached to the inner peripheral surface of the cylindrical filter can be blown inward, so that the chips can be reliably dropped and efficiently collected.

  The invention according to claim 3 is the chip processing apparatus according to claim 1 or 2, wherein a lid that can be opened and closed is provided at the inlet.

  According to such a configuration, since the inside of the cylindrical filter is separated from the work processing chamber area, even when the cylindrical filter is rotating, chips and coolant are blown back to the work processing chamber area. It is possible to prevent and to reliably collect chips and coolant.

  A fourth aspect of the present invention is the chip processing apparatus according to the first or second aspect, wherein a draining portion that hangs obliquely downward is provided at an inner peripheral edge of the inflow port.

  According to such a configuration, even when the cylindrical filter is rotating, the chips blown upward fall on the draining portion, and the coolant adheres to the lower surface of the draining portion and then flows along the lower surface. Hanging from the lower end. Therefore, chips and coolant can be prevented from being returned to the workpiece processing chamber area and the chips and coolant can be reliably recovered.

  A fifth aspect of the present invention is a chip processing method for separating the chips from the dirty liquid using the chip processing apparatus according to any one of the first to fourth aspects, wherein the opening / closing lid A dirty liquid inflow step for allowing the dirty liquid to flow into the cylindrical filter in a closed state, and rotating the cylindrical filter after the dirty liquid has flowed in, and the centrifugal force of the cylindrical filter to rotate the coolant to the cylindrical filter. A coolant recovery step of permeating from the inside to the outside and recovering in the coolant recovery tank; and a chip recovery step of opening the open / close lid and recovering the chips in the chip tank after permeation of the coolant. A chip processing method is provided.

  According to such a method, similarly to the first aspect, it is possible to separate the chips from the dirty liquid with a simple configuration as compared with the prior art, and to save the space of the apparatus.

  According to the present invention, the chip processing apparatus exhibits an excellent effect that a space can be saved with a simple configuration.

1 is a partially broken perspective view showing an embodiment of a chip processing apparatus according to the present invention. It is sectional drawing which showed embodiment of the chip processing apparatus which concerns on this invention. It is the fragmentary sectional view which showed other embodiment of the chip processing apparatus which concerns on this invention.

  The form for implementing the chip | tip processing apparatus which concerns on this invention is demonstrated in detail, referring an accompanying drawing. In the present embodiment, the case where the chip processing apparatus is installed in a bedless type machine tool having no bed below the work processing chamber area will be described as an example.

  The machine tool collects the machining unit that processes the workpiece and the dirty liquid mixed with the chips and coolant generated during the workpiece processing, separates the chips and coolant, and circulates the coolant to the workpiece processing chamber area. And a control unit for controlling the operation of the machine tool. The chip processing apparatus is installed below the work processing chamber area.

  As shown in FIG. 1 and FIG. 2, the chip processing apparatus 1 includes a casing 10 in which an inflow port 11 for dirty liquid is formed, and a cylindrical filter 20 vertically disposed below the inflow port 11 inside the casing 10. The opening / closing lid 22 provided on the bottom surface 21 located at the lower end of the cylindrical filter 20, the drive mechanism 30 for rotating the cylindrical filter 20, and the cutting piece provided below the cylindrical filter 20 for collecting chips. A powder tank 40 and a coolant recovery tank 50 provided so as to surround the cylindrical filter 20 and recovering the coolant that has passed through the cylindrical filter 20 are provided.

  The inflow port 11 is formed in the upper surface of the casing 10, and is opened facing the workpiece processing chamber area. The inflow port 11 is formed in a circular shape having a diameter smaller than the inner diameter of the cylindrical filter 20, and is arranged concentrically with the cylindrical filter 20. Around the inflow port 11, an inclined guiding portion 12 that is inclined in a funnel shape is formed so that dirty liquid flows toward the inflow port 11, and the inclined guiding portion 12 constitutes the upper surface of the casing 10. . In addition, a cylindrical vertical wall portion 13 whose lower end enters the inside of the cylindrical filter 20 is formed below the inflow port 11. The hanging wall portion 13 is formed so as to integrally extend from the inner peripheral portion of the tilt guiding portion 12 and reliably drops the dirty liquid into the cylindrical filter 20.

  In the present embodiment, the inflow port 11 is provided with a lid 14 that can be opened and closed. The lid body 14 is made of, for example, a pair of semicircular plate members, and is configured to close the entire inflow port 11. The lid body 14 is partially pin-bonded with an arc-shaped outer periphery, and is tilted about the pin by a drive mechanism (not shown). The lid 14 closes the inflow port 11 when the cylindrical filter 20 rotates.

  The cylindrical filter 20 is made of, for example, a metal mesh such as stainless steel, or a thin plate frame bonded with a cloth filter, and the roughness of the eyes is, for example, # 40 mesh. The cylindrical filter 20 is placed vertically so that the rotation axis is vertical. At the lower end of the cylindrical filter 20, a bottom surface 21 is provided for receiving the dirty liquid that has fallen and collecting the dirty liquid in the cylindrical filter 20. The bottom surface 21 is configured by an upper end surface of a rotating shaft 23 that extends below the cylindrical filter 20. The lower end portion of the cylindrical filter 20 is fixed to the upper end peripheral portion of the rotating shaft 23. On the bottom surface 21, a circular drop port 23 b for dropping chips into the chip tank 40 is formed. A bearing 26 is provided between the vertical wall portion 13 and the upper end portion of the cylindrical filter 20, and the cylindrical filter 20 is rotatably connected to the vertical wall portion 13.

  The rotating shaft 23 is formed in a hollow cylindrical shape extending in the vertical direction, and a chip dropping path 23a (see FIG. 2) is formed therein. The upper end of the rotary shaft 23 has the same diameter as the diameter of the cylindrical filter 20, and the diameter of the rotary shaft 23 is reduced downward. Yes. Along with this, the falling path 23a is formed in a funnel shape on the upper side, and the lower side extends with a constant diameter. The chips enter the dropping path 23a from the dropping port 23b on the upper end surface (bottom surface 21), and are discharged from the discharge port 23c (see FIG. 2) at the lower end of the rotating shaft 23 to the lower chip tank 40. A bearing 24 is provided below the rotation shaft 23, and the rotation shaft 23 and the cylindrical filter 20 are supported so as to be rotatable with respect to the casing 10. A gear 25 is attached to the lower part of the rotating shaft 23. In the casing 10, a motor 31 constituting the drive mechanism 30 is provided obliquely below the rotation shaft 23. The motor 31 is placed vertically so that the rotary drive shaft 32 extends upward. A drive gear 33 provided on the rotary drive shaft 32 is disposed so as to mesh with the gear 25 below the rotary shaft 23.

  The open / close lid 22 is provided in the drop opening 23 b of the bottom surface 21. The opening / closing lid 22 is made of, for example, a pair of semicircular plate members, and is configured to liquid-tightly close the entire drop port 23b. A part of the arc-shaped outer peripheral portion of the open / close lid 22 is pin-joined, and is tilted about the pin by a drive mechanism (not shown). The opening / closing lid 22 is opened when the rotation of the cylindrical filter 20 is stopped and the chips are dropped.

  The chip tank 40 has a box shape with an open top, and is disposed below the drop opening 23b. The chip tank 40 is disposed at the bottom of the inside of the casing 10 of the chip processing apparatus 1 and is provided so as to be drawn out from the side surface of the casing 10.

  The coolant recovery tank 50 is provided so as to surround the outer periphery of the cylindrical filter 20 and is formed in an annular shape. The coolant recovery tank 50 includes an annular bottom surface 51 that surrounds the rotating shaft 23 obliquely below the cylindrical filter 20, an inner peripheral wall 52 on the inner peripheral side, and an outer peripheral wall 53 on the outer peripheral side.

  A coolant delivery port 54 is formed on the bottom surface 51, and the coolant is allowed to flow to a clean tank (not shown) via a delivery pipe 55 connected to the coolant delivery port 54. In the present embodiment, the bottom surface 51 is formed horizontally, but may be formed so as to be inclined so that the position of the coolant delivery port 54 is lowered.

  The inner peripheral wall 52 has a diameter substantially the same as that of the cylindrical filter 20 and is formed so as to rise vertically from the inner peripheral edge of the bottom surface 51. The upper end portion of the inner peripheral wall 52 is slidably circumscribed to the outer peripheral surface of the upper end portion of the rotating shaft 23 via a seal 27. This prevents the coolant from flowing to the bearing 24 and the gear 25 side along the outer surface of the rotating shaft 23. Instead of the seal 27, a skirt portion (not shown) that covers the upper end of the inner peripheral wall 52 may be formed at the upper end portion (the lower end portion of the cylindrical filter 20) of the rotating shaft 23. Even in this case, the coolant that has passed through the cylindrical filter 20 falls into the coolant recovery tank 50 from the lower end of the skirt portion, so that it can flow to the bearing 24 and the gear 25 side along the outer surface of the rotating shaft 23. Absent.

  The outer peripheral wall 53 is formed to rise vertically from the outer peripheral edge of the bottom surface 51. The upper end of the outer peripheral wall 53 extends to a position equal to or higher than the upper end of the cylindrical filter 20, and is configured to surround the entire cylindrical filter 20 with a predetermined interval from the outer peripheral surface. . The outer peripheral wall 53 is formed to have a diameter equivalent to the outer diameter of the tilt guiding portion 12 on the upper surface of the casing 10.

  In the coolant recovery tank 50 having such a configuration, the coolant blown to the outside by the rotation of the cylindrical filter 20 hits the inner surface of the outer peripheral wall 53 and then flows down along the inner surface, so that the outer peripheral wall 53 And is stored in a portion surrounded by the inner peripheral wall 52 and the bottom surface 51. Then, the coolant is stored in the clean tank via the coolant outlet 54 and the delivery pipe 55.

  The chip processing apparatus 1 further includes an air blowing device 60 that blows air toward the cylindrical filter 20 from the coolant recovery tank 50 side. The air blowing device 60 includes a nozzle 61 provided inside the coolant recovery tank 50. The nozzles 61 are arranged in a row on the inner surface of the outer peripheral wall 53 with a predetermined interval in the vertical direction. The nozzle 61 is arranged at an interval at which air is blown over the entire height direction of the cylindrical filter 20. In the air blow device 60 having such a configuration, the chips adhering to the inner peripheral surface of the cylindrical filter 20 can be blown inward by blowing air from the coolant recovery tank 50 side toward the cylindrical filter 20. . In addition, a pipe (not shown) having extensibility may be connected to the nozzle so that the position can be adjusted. If it does in this way, air can be sprayed from the vicinity of the cylindrical filter 20, or the blowing direction of air can be adjusted, and chip removal performance can be improved.

  Next, the operation of the chip processing apparatus 1 and the chip processing method when processing a workpiece will be described.

  When machining a workpiece, the spindle holding the tool is operated while supplying coolant to the workpiece machining chamber area. At this time, the lid 14 of the inlet 11 on the upper surface of the casing 10 of the chip processing apparatus 1 is opened (indicated by a solid line in FIG. 2), and the open / close lid 22 on the bottom surface 21 below the cylindrical filter 20 is closed (FIG. 2). (Indicated by a solid line in 2).

  When the workpiece is processed in this state, the coolant and chips fall on the chip processing apparatus 1 below the workpiece processing chamber area. Then, the dirty liquid in which the chips are mixed with the coolant flows from the inclination guiding portion 12 at the top of the chip processing apparatus 1 to the inlet 11 and falls into the cylindrical filter 20 (dirty liquid inflow process). At this time, the cylindrical filter 20 stops without rotating.

  When a predetermined amount of dirty liquid accumulates in the cylindrical filter 20, the processing of the workpiece is stopped, the lid body 14 of the inlet 11 is closed, and the motor 31 is operated to rotate the cylindrical filter 20. Then, the dirty liquid stored in the cylindrical filter 20 also rotates together with the cylindrical filter 20 and is pressed against the inner peripheral surface of the cylindrical filter 20 by the centrifugal force. Then, the coolant in the dirty liquid passes through the cylindrical filter 20 and is separated from the chips left behind by being stopped by the cylindrical filter 20. If the rotation time of the cylindrical filter 20 is short, the workpiece may be processed continuously while the cylindrical filter 20 is rotating.

  The coolant that has passed through the cylindrical filter 20 is blown to the outer coolant recovery tank 50, hits the inner surface of the outer peripheral wall 53, flows down along the inner surface, and is stored in the lower part of the coolant recovery tank 50. (Coolant recovery process). Then, the coolant is stored in the clean tank via the coolant outlet 54 and the delivery pipe 55.

  The cylindrical filter 20 stops after rotating for a predetermined time. In addition, after the coolant is separated and before the rotation is stopped and the rotational speed of the cylindrical filter 20 is slowed down, the air blowing device 60 is operated to blow air. By doing in this way, the chips adhering to the inner peripheral surface of the cylindrical filter 20 can be blown inward and dropped onto the bottom surface 21. At this time, since the air is blown while rotating the cylindrical filter 20, the nozzles 61 need only be provided in a line in the vertical direction. Moreover, since air is sprayed in the state where the rotational speed of the cylindrical filter 20 is slow, it is possible to efficiently blow off chips. After the rotation of the cylindrical filter 20 is stopped, the opening / closing lid 22 is opened, and the chips accumulated on the bottom surface 21 are dropped into the chip tank 40 and collected (chip collection process). When a predetermined amount of chips accumulates in the chip tank 40, the chip tank 40 is taken out to discharge the chips.

  As described above, according to the chip processing apparatus 1 and the chip processing method according to the present embodiment, among the dirty liquid flowing in from the inflow port 11, the coolant permeates through the cylindrical filter 20 by centrifugal force and is a coolant recovery tank. 50, the chips are left in the cylindrical filter 20, so that the chips and the coolant can be accurately separated. In particular, since the cylindrical filter 20 is rotated and the coolant is blown outward by the centrifugal force, the effect of separating the coolant and the chips is high. The chips fall downward by a simple process such as opening the opening / closing lid 22 after the rotation of the cylindrical filter 20 is finished, and are collected in the chip tank. According to the present invention as described above, the coolant and the chips can be separated with a simple configuration and a simple work process as compared with the conventional device, and the space of the device can be saved. In particular, the planar installation space is very small because there is only a plane area for the cylindrical filter 20 and the surrounding coolant recovery tank 50.

  By the way, according to the bedless type machine tool, there is no bed provided in the lower part of the column in a normal machine tool, so the bed does not protrude below the work processing chamber area, and the installation space for the chip processing device is reduced. In the vertical direction, it can be secured larger than that of a normal machine tool. In the present embodiment, the chip processing apparatus 1 is used for a bedless type machine tool. In this case, the longitudinal length of the chip processing apparatus 1 can be increased. A large thickness can be secured, and many dirty liquids can be processed at one time.

  Further, according to the present embodiment, the air blow device 60 can blow away the chips adhering to the inner peripheral surface of the cylindrical filter 20 to the inside, so that the chips can be reliably dropped and efficiently recovered. it can. Furthermore, since the chips adhering to the cylindrical filter 20 can be removed, it is possible to prevent a decrease in the coolant permeability.

  Furthermore, by providing a lid 14 at the inlet 11 and closing the lid 14 when the cylindrical filter 20 is rotated, the inside of the cylindrical filter 20 and the workpiece machining chamber area are partitioned, so that the workpiece machining chamber area Chips and coolant can be prevented from being blown back and dirty liquid can be stored in the cylindrical filter 20 to reliably collect chips and coolant.

  Next, another embodiment for implementing the chip processing apparatus according to the present invention will be described in detail with reference to FIG. The chip processing apparatus 1 ′ of the present embodiment is different from the previous embodiment in the configuration of the inlet.

  As shown in FIG. 3, the inflow port 11 of the chip processing apparatus 1 ′ is provided with a draining portion 15 that hangs obliquely downward at the inner peripheral edge thereof. The draining portion 15 is formed flush with the inclination angle equivalent to that of the inclination guiding portion 12. The draining portion 15 may be formed integrally with the tilt guiding portion 12 and the hanging wall portion 13 or may be formed separately and fixed to the tilt guiding portion 12. Since other configurations are the same as those in the above embodiment, the description thereof is omitted.

  According to such a configuration, even when the cylindrical filter 20 is rotating, the chips blown upward fall on the draining portion 15 and the coolant blown upward adheres to the lower surface of the draining portion 15. After that, it flows along the lower surface and hangs from the lower end. Therefore, chips and coolant can be prevented from being returned to the work processing chamber area and the chips and coolant can be reliably recovered. Further, by providing the draining portion 15, it is not necessary to provide a drive mechanism for opening and closing the lid body 14 as in the above embodiment. Therefore, further simplification of the apparatus can be achieved.

  The embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and it is needless to say that the design can be changed as appropriate without departing from the spirit of the present invention. For example, in the present embodiment, the case where the present invention is applied to a bedless type machine tool has been described as an example, but it is needless to say that the present invention can also be applied to a normal machine tool having a bed.

DESCRIPTION OF SYMBOLS 1 Chip processing apparatus 11 Inlet 14 Cover body 20 Cylindrical filter 21 Bottom face 22 Opening / closing lid 30 Drive mechanism 40 Chip tank 50 Coolant collection tank 60 Air blow apparatus 15 Drain part

Claims (5)

In a chip processing apparatus that separates the chips from a dirty liquid in which chips generated during workpiece processing are mixed with the coolant,
A cylindrical filter placed vertically below the dirty liquid inlet;
An opening / closing lid provided on the bottom surface located at the lower end of the cylindrical filter;
A drive mechanism for rotating the cylindrical filter;
A chip tank provided below the cylindrical filter for collecting the chip;
A coolant recovery tank that is provided so as to surround the cylindrical filter and recovers the coolant that has passed through the cylindrical filter;
The chip processing apparatus, wherein the coolant is configured to be transmitted from the inside to the outside by a centrifugal force of the rotating cylindrical filter. The chip processing apparatus according to claim 1, further comprising an air blowing device that blows air toward the cylindrical filter from the coolant recovery tank side. The chip processing apparatus according to claim 1, wherein a lid that can be opened and closed is provided at the inflow port. 3. The chip processing apparatus according to claim 1, wherein a draining portion that hangs obliquely downward is provided at an inner peripheral edge portion of the inflow port. A chip processing method for separating the chips from the dirty liquid using the chip processing apparatus according to any one of claims 1 to 4,
A dirty liquid inflow step for allowing the dirty liquid to flow into the cylindrical filter with the open / close lid closed;
A coolant recovery step of rotating the cylindrical filter after inflow of the dirty liquid and centrifugally transmitting the coolant from the inside to the outside of the cylindrical filter and recovering it in the coolant recovery tank;
A chip recovery method comprising: a chip recovery step of opening the opening / closing lid and recovering the chip in the chip tank after the coolant has permeated.

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