JP2006007391A - Chip discharging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chip discharging device capable of further effectively discharging chips. <P>SOLUTION: The chip discharging device 1 is attached to a machine tool 50 provided with a bed 51, a column 52, a main spindle head 53, a main spindle 54, a saddle 55, and a table 56. The device 1 is provided with a discharging member 10 arranged in a machining area and having a discharging groove 10a, whose both end parts are connected to the outside of the machining area and which is formed in the same direction as the moving direction of the saddle 55, guide members 15, 16, which are obliquely provided in the machining area so that the height on the discharging groove 10a side becomes lower and guide the chips generated by cutting with the machine tool 50 into the discharging groove 10a, a nozzle 21, which is attached to the saddle 55 and discharges a cutting liquid toward the inside of the discharging groove 10a, a supply pump for supplying the cutting liquid to the nozzle 21, and recovering mechanisms 30 which are arranged out of the machining area, respectively connected to both end sides of the discharging groove 10a, and recover the chips. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a chip discharging apparatus that is attached to a machine tool and discharges chips generated in a machining area by cutting to the outside of the machining area.

  Conventionally, as shown in FIG. 5, a chip discharging apparatus is known. As shown in FIG. 5, the chip discharge device 100 is attached to the NC machine tool 120, and includes a discharge unit 101 that discharges chips generated by the cutting process of the NC machine tool 120, and a discharge unit 101. A cutting fluid supply unit 103 that supplies cutting fluid to the discharge unit, a recovery unit 107 that recovers chips discharged from the discharge unit 101, and the like are provided.

  The NC machine tool 120 is supported by a bed 121, a column 122 disposed on the bed 121 so as to be movable in the direction of the arrow X, and a column 122 so as to be movable in the vertical (Y-axis) direction. A spindle head 123, a spindle 124 that is rotatably supported by the spindle head 123 and holds a tool (not shown), and is disposed on the bed 121 so as to be movable in the direction of the arrow Z-axis, and a workpiece (not shown) ) Is mounted, and the workpiece (not shown) is cut by moving the spindle 124 and the table 125 relative to each other.

  The discharge unit 101 has two discharge members 102 that are open at the top and have discharge grooves 102a formed along the arrow Z-axis direction, a moving mechanism (not shown) for moving the table 125, and the like. A cover (not shown) configured to cover and chip chips generated by cutting by connecting to the discharge groove 102a of the discharge member 102 and the like is provided.

  The discharge member 102 is disposed on the bed 121 at a position below the table 125 and on both sides of the table 125, the longitudinal direction of which is along the Z-axis direction, and one end side of the discharge groove 102a is an NC machine tool. 120 connected to the outside of the machine. Further, the cover (not shown) is provided so as to be inclined so that the height on the discharge groove 102a side is lowered.

  The cutting fluid supply unit 103 receives the cutting fluid stored in the supply pipe 104 disposed along the discharge groove 102 a and the storage tank 108 of the recovery unit 107 in the discharge groove 102 a of the discharge member 102. A supply pump 105 that supplies the supply pipe 104 and a plurality of nozzles 106 that are arranged in the supply pipe 104 at predetermined intervals along the longitudinal direction thereof and discharge the cutting fluid toward the one end side in the discharge groove 102a. Etc.

  The recovery unit 107 includes a storage tank 108 disposed outside the NC machine tool 120 and at a lower position on one end side of the discharge groove 102a of the discharge member 102, and a mesh-shaped member. And a separation member (not shown) that separates the chips discharged from one end side of the discharge groove 102a and the cutting fluid. The chips are separation members (not shown). The cutting fluid accumulates on the top and passes through a separating member (not shown) and is stored in the storage tank 108.

  According to the chip discharging device 100, when cutting is performed by the NC machine tool 120, chips generated by the cutting are guided by a cover (not shown) or the like and are discharged into the discharge groove 102a of the discharging member 102. Fall into.

  The falling chips are moved in the discharge groove 102a toward the one end side of the discharge groove 102a by the cutting liquid discharged from each nozzle 106, and are discharged together with the cutting liquid from the one end side.

  The discharged chips and cutting fluid fall on a separation member (not shown) and are separated respectively by this, the chips are deposited on the separation member (not shown), and the cutting fluid is separated from the separation member. It passes through a member (not shown) and is stored in the storage tank 108.

  In this way, the chips generated by the cutting process are discharged from the inside of the NC machine tool 120 to the outside of the machine, and the discharged chips, that is, the chips accumulated on the separation member (not shown) are Removed regularly.

Japanese Patent Laid-Open No. 10-6174

  However, in the above-described conventional chip discharge device 100, the cutting fluid discharged from the plurality of nozzles 106 gradually decreases in flow velocity, so that chips accumulate on the downstream side in the flow direction between the nozzles 106. There was a problem that it was easy to do.

  Further, in order to prevent such chip accumulation, if the nozzles 106 are arranged at a narrower interval and more nozzles 106 are provided, the discharge pressure of the cutting fluid discharged from each nozzle 106 is reduced, so that There arises a problem that it is necessary to use a high supply pump 103 and a problem that a large amount of cutting fluid is required.

  Furthermore, since chips on the cover (not shown) fall into the discharge groove 102a due to the inclination of the cover (not shown), it is difficult to drop depending on the inclination angle. There is also a portion, and there is a problem that chips are likely to accumulate on a cover (not shown) of the portion.

  This invention is made | formed in view of the above situation, Comprising: The objective is provision of the chip discharge apparatus which can discharge a chip more effectively.

To achieve the above object, the present invention provides:
And a table on which a workpiece is placed, and a main shaft for holding a tool. The table and the main shaft are arranged relative to each other in a machining area. In a machine tool configured to cut the workpiece by moving, an apparatus for discharging chips generated by the cutting from the machining area to the outside of the machining area,
At least one having a discharge groove disposed at a position lower than the table in the processing region, having an upper opening and both ends connected to the outside of the processing region and formed in the same direction as the moving direction of the table. Two discharge members,
In addition to being connected to the discharge groove of the discharge member, the chip is provided in the processing region so as to be inclined so that the height on the discharge groove side is lowered, and guides chips generated by the cutting into the discharge groove. A guide member;
First discharge means attached to the table and discharging fluid into a discharge groove of the discharge member;
Fluid supply means for supplying the fluid to the first discharge means and discharging the fluid from the first discharge means;
A recovery means disposed outside the processing region and connected to both ends of the discharge groove of the discharge member to recover the chips;
By moving the table in a state where the fluid is discharged from the first discharge means, the chips in the discharge groove are moved along the discharge groove toward the end portions of the discharge member, and the ends According to the present invention, there is provided a chip discharging apparatus characterized in that the chips moved to the section side are collected by the collecting means.

  According to this invention, when cutting is performed in the machine tool, chips generated by the cutting are guided by the guide member and fall into the discharge groove of the discharge member. Further, at the time of cutting, the fluid is supplied to the first discharge means by the fluid supply means, and is discharged from the first discharge means, and the discharged fluid is directed toward the respective end portions in the discharge groove. Each flowing.

  Chips that fall into the discharge groove are moved in the discharge groove toward each end (that is, outside the processing region) by the fluid flowing in the discharge groove, and when the table moves along with the cutting process. Since the fluid discharge position in the discharge groove moves, chips between the discharge position and the discharge groove end on the same direction side as the table moving direction are more effectively transferred to the discharge groove end on the table moving direction side. It can be moved towards. And the chip | tip which moved to the discharge groove edge part is collect | recovered by the collection | recovery means outside a process area.

  The chip discharge device further includes a second discharge unit attached to the table and configured to discharge the fluid so as to move the chip on the guide member toward the discharge groove side of the discharge member, It is preferable that the fluid supply unit is configured to supply the fluid to the second discharge unit.

  In this way, even if chips on the guide member do not fall into the discharge groove of the discharge member and accumulate on the guide member, they are supplied by the fluid supply means, and the second discharge means Chips accumulated on the guide member can be dropped (removed) into the discharge groove by the fluid discharged from the pipe. Further, since the discharge position of the fluid discharged from the second discharge means is moved by the movement of the table, chips accumulated on the guide member can be removed over a wide range.

  The fluid discharged from the first discharge means and the second discharge means may be a liquid such as a cutting fluid or a gas such as air.

  Thus, according to the chip discharging apparatus according to the present invention, since the discharge position of the fluid discharged from the first discharge means can be moved by the movement of the table, the fluid from the first discharge means can be moved. Even if the discharge flow rate and the discharge pressure are low, the chips in the discharge groove can be moved and discharged to each end side more efficiently and effectively.

  Further, if the second discharge means is further provided, the chips accumulated on the guide member can be effectively dropped into the discharge groove, and discharged from the second discharge means by the movement of the table. Since the fluid discharge position moves, chips accumulated on the guide member can be dropped into the discharge groove over a wide range.

  Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a cross-sectional view showing a schematic configuration of a chip discharging apparatus and the like according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view in the direction of arrows AA in FIG. 3 is a cross-sectional view in the direction of arrow BB in FIG.

  As shown in FIGS. 1 to 3, the chip discharging apparatus 1 of the present example is attached to a machine tool 50, and has a discharge groove 10 a for discharging chips generated by cutting of the machine tool 50. The cutting fluid is supplied into the two discharge members 10 provided, the X-axis guide member 15 and the Y-axis guide member 16 that guide chips toward the discharge members 10, and the discharge grooves 10 a of the discharge members 10. A supply mechanism 20 and a recovery mechanism 30 that recovers chips discharged from the discharge groove 10a of each discharge member 10 are configured.

  The machine tool 50 is supported by a bed 51, a column 52 disposed on the bed 51, a spindle head 53 supported by the column 52 so as to be movable in the Z-axis direction, and a spindle head 53 so as to be rotatable. The main shaft 54 for holding the tool T, the saddle 55 disposed on the bed 51 so as to be movable in the direction of the arrow Y, and the saddle 55 disposed so as to be movable in the direction of the arrow X-axis. A table 56 on which W is placed, a cutting fluid supply unit (not shown) for supplying the cutting fluid stored in the storage tank 35 of the recovery mechanism 30 to the contact portion between the tool T and the workpiece W, and A cover 57 that surrounds the machine tool 50 is provided, and the workpiece W is moved by relatively moving the spindle 54 and the table 56 within the machining area while supplying cutting fluid to the contact portion between the tool T and the workpiece W. Configured to cut. Further, the movable area of the saddle 55 and the table 56 is the machining area.

  The discharge member 10 is disposed below the saddle 55 and at both ends of the bed 51 so that the longitudinal direction is along the Y-axis direction indicated by the arrow and both ends in the longitudinal direction are connected to the outside of the processing region. It is attached to the bed 51 through the attachment member 11 as appropriate.

  Further, the discharge member 10 is formed by appropriately processing a rectangular and plate-like member, and the upper portion and both end portions are opened at the center portion, and provided along the arrow Y-axis direction. A discharge groove 10a is provided, and both sides of the discharge groove 10a are provided with inclined portions 10b that are inclined toward the discharge groove 10a and guide chips and cutting fluid into the discharge groove 10a.

  The X-axis guide member 15 includes a telescopic cover connected to a saddle 55 and a table 56, and is formed so as to be inclined so that the height of the upper surface decreases from the center side in the Y-axis direction to both end sides. Then, chips and cutting fluid are dropped downward along the inclined surface and dropped onto the discharge member 10 and the Y-axis guide member 16.

  The X-axis guide member 15 is provided so as to cover a feed mechanism (not shown) and a guide mechanism (not shown) for moving the table 56 in the direction of the arrow X-axis. It also functions as a member that prevents the penetration of cutting fluid.

  Similar to the X-axis guide member 15, the Y-axis guide member 16 includes a telescopic cover connected to the bed 51 and the saddle 55, and the height of the upper surface extends from the center side in the arrow X-axis direction to both end sides. It is formed so as to be lowered, and chips and cutting fluid are dropped downward along the inclined surface and dropped onto the discharge member 10.

  Further, the Y-axis guide member 16 is provided so as to cover a feed mechanism portion (not shown) and a guide mechanism portion (not shown) for moving the saddle 55 in the arrow Y-axis direction. It also functions as a member that prevents the penetration of cutting fluid.

  The supply mechanism 20 is disposed above the discharge groove 10 a of the discharge member 10, and has a nozzle 21 attached to the lower surface of both ends of the saddle 55 in the X-axis direction, and supplies the cutting fluid to the nozzle 21. And a supply pipe (not shown) for connecting the nozzle 21 and the supply pump (not shown).

  The nozzle 21 is configured to discharge cutting fluid supplied from a supply pump (not shown) through a supply pipe (not shown) into the discharge groove 10a. Chips in the discharge groove 10a are moved to the respective end portions of the discharge groove 10a and discharged from the respective end portions. The supply pump (not shown) is configured to supply the cutting fluid stored in the storage tank 35 of the recovery mechanism 30 to the nozzle 21.

  The recovery mechanism 30 is disposed on both sides of the bed 51 in the direction of the arrow Y and outside the processing region, and is connected to each end of the discharge member 10, and below the separation / discharge mechanism 31. And a storage tank 35 that stores the cutting fluid.

  The separation / discharge mechanism 31 is configured by connecting a plurality of plates 32a in an endless annular shape, and includes a conveyance belt 32 that conveys chips, a support member 33 that accommodates the conveyance belt 32 and rotatably supports it. A driving motor (not shown) for rotating the conveying belt 32 in the direction of the arrow and a collection box 34 disposed on the downstream end side of the chips in the conveying direction, and the chips are placed on the conveying belt 32. The chips and the cutting fluid are separated from each other.

  The support member 33 includes a horizontal portion and an inclined portion. The horizontal portion is disposed below the discharge member 10 in the machine tool 50 and the inclined portion is disposed outside the machine tool 50. The horizontal portion is formed with an opening at the top and bottom, and chips and cutting fluid discharged from each end of the discharge groove 10a fall on the transport belt 32 from the opening 33a. The inclined portion is provided with an opening 33b on the lower surface on the downstream end side in the transport direction, from which the chips transported by the transport belt 32 fall into the collection box 34 and are collected. ing.

  The storage tank 35 is disposed at a position below the horizontal portion of the support member 33, and stores the cutting fluid separated by the separation / discharge mechanism 31.

  According to the chip discharging apparatus 1 of the present example configured as described above, when cutting is performed while the cutting fluid is being supplied to the contact portion between the tool T and the workpiece W in the machine tool 50, The generated chips and the supplied cutting fluid are guided directly, by the X-axis guide member 15 or the Y-axis guide member 16, or rebound after colliding with the cover 57, and the discharge groove 10 a of the discharge member 10. It falls inside or on the inclined portion 10b. The chips and cutting fluid that have fallen on the inclined portion 10b are guided by the inclined portion 10b and fall into the discharge groove 10a.

  At the time of cutting, cutting fluid is supplied from the storage tank 35 to the nozzle 21 by a supply pump (not shown), and is discharged from the nozzle 21 into the discharge groove 10a. The inside of the discharge groove 10a flows toward the respective end portions.

  Chips and cutting fluid that have fallen into the discharge groove 10a are discharged from the nozzle 21, and the inside of the discharge groove 10a is directed toward each end (that is, outside the processing region) by the cutting fluid that flows through the discharge groove 10a. When the saddle 55 is moved along with the cutting, the discharge position of the cutting fluid in the discharge groove 10a is moved. Therefore, the end of the discharge groove 10a on the same side as the discharge position and the movement direction of the saddle 55 The chips and the cutting fluid in between are moved more effectively toward the end of the discharge groove 10a on the saddle 55 moving direction side.

  Thereafter, the chips and the cutting fluid that have moved to the end of the discharge groove 10a fall on the conveyor belt 32 from the end of the discharge groove 10a, and the chips are directed toward the outside of the machine tool 50 by the conveyor belt 32. After being transported and transported to the downstream end in the transport direction, it falls into the collection box 34 and is collected. On the other hand, the cutting fluid falls into the storage tank 35 and is stored.

  Thus, according to the chip discharge device 1 of the present example, the discharge position of the cutting fluid discharged from the nozzle 21 can be moved by the movement of the saddle 55, so that the cutting fluid is discharged from the nozzle 21. Even if the flow rate or the discharge pressure is low, the chips in the discharge groove 10a can be moved to each end side more efficiently and effectively and discharged to the recovery mechanism 30.

  As mentioned above, although one Embodiment of this invention was described, the specific aspect which this invention can take is not limited to this at all.

  In the above example, the nozzles 21 are respectively provided on the lower surfaces of both ends of the saddle 55 in the X-axis direction at the upper position of the discharge groove 10a of the discharge member 10, and the cutting fluid is discharged from the nozzle 21 into the discharge groove 10a. However, the present invention is not limited to this. For example, as shown in FIG. 4, each nozzle 22 is provided on the side surface or the lower surface of the saddle 55 so as to correspond to the inclined portion 10 b of the discharge member 10. Also good.

  In this way, even if chips dropped on the inclined portion 10b do not fall into the discharge groove 10a and may accumulate on the inclined portion 10b, the cutting fluid discharged from each nozzle 22 Thus, chips accumulated on the inclined portion 10b can be effectively dropped (removed) into the discharge groove 10a. Further, since the discharge position of the cutting fluid discharged from the nozzle 22 is moved by the movement of the saddle 55, chips accumulated on the inclined portion 10b can be removed over a wide range.

  In this case, if the discharge direction of the cutting fluid discharged from the nozzle 22 is directed to the end portion side of the discharge member 10, chips on the inclined portion 10b can be removed over a wider range. Since it is possible, it is more preferable.

  Although not shown, nozzles may be provided on the saddle 55 and the table 56 so that chips accumulated on the X-axis guide member 15 and the Y-axis guide member 16 can be removed.

  The recovery mechanism 30 is not limited to the above example. For example, the recovery mechanism 30 includes a storage tank disposed outside the processing region and a mesh member, and a separation member provided on the upper side in the storage tank. In this case, the chips and cutting fluid discharged from the discharge groove 10a of the discharge member 10 are dropped on the separation member and then separated by the separation member, and the chips are separated on the separation member. The cutting fluid passes through the separation member and is stored in the storage tank.

  In the above example, the cutting fluid is discharged from the nozzle 21. However, the present invention is not limited to this, and in the machine tool 50, when cutting is performed without using the cutting fluid, The nozzle 21 can be configured to discharge air.

  Furthermore, in the above example, the bed 51 and the discharge member 10 are configured as separate bodies, but the present invention is not limited to this, and the bed and the discharge member are configured integrally to form a discharge groove in the bed. It is also possible to form an inclined portion.

It is sectional drawing which showed schematic structure, such as a chip discharge apparatus concerning one Embodiment of this invention. It is sectional drawing of the arrow AA direction in FIG. It is sectional drawing of the arrow BB direction in FIG. It is sectional drawing which showed schematic structure, such as a chip discharge apparatus concerning other embodiment of this invention. It is the top view which showed schematic structure, such as a chip discharge device concerning a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chip discharge apparatus 10 Discharge member 10a Discharge groove 10b Inclination part 15 X-axis guide member 16 Y-axis guide member 20 Supply mechanism 21 Nozzle 30 Collection | recovery mechanism 31 Separation and discharge mechanism 32 Conveyor belt 33 Support member 34 Collection box 35 Storage tank 50 Machine tool 51 Bed 52 Column 53 Spindle head 54 Spindle 55 Saddle 56 Table

Claims (2)

And a table on which a workpiece is placed, and a main shaft for holding a tool. The table and the main shaft are arranged relative to each other in a machining area. In a machine tool configured to cut the workpiece by moving, an apparatus for discharging chips generated by the cutting from the machining area to the outside of the machining area,
At least one having a discharge groove disposed at a position lower than the table in the processing region, having an upper opening and both ends connected to the outside of the processing region and formed in the same direction as the moving direction of the table. Two discharge members,
In addition to being connected to the discharge groove of the discharge member, the chip is provided in the processing region so as to be inclined so that the height on the discharge groove side is lowered, and guides chips generated by the cutting into the discharge groove. A guide member;
First discharge means attached to the table and discharging fluid into a discharge groove of the discharge member;
Fluid supply means for supplying the fluid to the first discharge means and discharging the fluid from the first discharge means;
A recovery means disposed outside the processing region and connected to both ends of the discharge groove of the discharge member to recover the chips;
By moving the table in a state where the fluid is discharged from the first discharge means, the chips in the discharge groove are moved along the discharge groove toward the end portions of the discharge member, and the ends A chip discharging apparatus characterized in that the chip moved to the section side is collected by the collecting means. A second discharge means that is attached to the table and discharges the fluid so as to move chips on the guide member toward the discharge groove of the discharge member;
2. The chip discharging apparatus according to claim 1, wherein the fluid supply means is configured to supply the fluid to the second discharge means.

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