JP4833742B2 - Machine tool chip recovery device - Google Patents

Description

  The present invention relates to a chip collection device for collecting chips generated by cutting in a machine tool.

In machine tools, chips are generated when a workpiece is cut with a tool. In order to remove the chips, a coolant is sprayed onto a processed part where the workpiece is cut in order to cool a tool that rises in heat due to the cutting process.
The coolant supplied to the processing unit is collected in a coolant tank via a coolant receiver disposed at the lower part of the processing unit of the machine tool. The recovered coolant is again supplied to the processing section and used in a circulating manner.

  In this coolant circulation cycle, the coolant is returned to the coolant tank after the mixed chips are removed. A method is often used in which only the chips are left on the chip receiver by passing through the coolant and separated from the coolant. For example, coolant that is supplied to the processing unit and mixed with chips is collected and collected in a coolant tank through a mesh container as a chip receiver, whereby the chips are collected in the mesh container, and then this mesh container A cutting waste collecting device is known in which chips are removed from the container by reversing (see Patent Document 1).

Japanese Utility Model Publication No. 61-1344

In order to improve the flow of the coolant used for circulation, it is desirable to frequently remove the chips accumulated on the chip receiver. However, in the method of collecting the chips in the mesh-shaped chip receiver by passing the coolant mixed with the chips through the mesh-shaped chip receiver, the chips are caught in the mesh when removing the accumulated chips. It was easy and took time to remove.
For example, even in the cutting waste collecting apparatus as described in Patent Document 1 described above, even if the net-like container is inverted to remove the chips from the container, the chips cannot be sufficiently removed, It is difficult to eliminate the clogged state of the mesh. When clogging occurs, it becomes difficult for the coolant to pass smoothly through the mesh-shaped chip receiving part, and if the coolant overflows from the chip receiver and is collected in the coolant tank, the coolant The coolant in the tank also contains chips, which is a problem.

  Then, this invention is providing the chip collection | recovery apparatus which can remove a chip | tip easily from a mesh-shaped chip receiver, and can also remove the clog of the mesh of a chip receiver.

The present invention is a machine tool chip recovery device for recovering chips generated during workpiece processing,
A chip stacking portion made of a flat plate-shaped member, and a bottom surface formed of a mesh portion that is connected to the chip stacking portion and is inclined upward; It has a nozzle which injects a coolant toward the inside of a chip receptacle from the outside. Coolant mixed with chips is separated by passing the coolant through the mesh part, and the chips accumulated on the mesh part are collected in the chip accumulation part with the coolant sprayed from the nozzle, making it easy to remove the chips. To do. Further, on the upper surface of the flat plate-like member of the chip accumulation portion, in the direction of the connecting line between the chip accumulation portion and the mesh portion, and toward the upper surface of the flat plate-like member of the chip accumulation portion. By providing a nozzle for collecting chips for injecting coolant from one side to the other side, chips can be collected in one place. And the chip accumulation part was formed in the side opposite to the side by which the nozzle for chip collection of the said chip accumulation part is arrange | positioned. Alternatively, an openable / closable hole for taking out the chip is formed in the chip accumulation part, and the chip is taken out from the hole.

  The chips are separated from the coolant by the mesh portion and are collected in the shape of a flat plate member of the chip collecting portion, so that the chips can be easily taken out. In addition, since the coolant is sprayed from the outside to the inside of the mesh portion, the chips are removed from the mesh portion and transferred to the chip collecting portion, so that the mesh clogging can also be released.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view of a machine tool to which a chip collection device of the present invention is attached.
In FIG. 1, reference numeral 3 denotes a spindle head. A tool 4 is attached to the tip of the spindle head 3, and a workpiece 5 of a workpiece is cut by the tool 4. A coolant receiver 6 is provided below a processing portion for processing the workpiece 5 by the tool 4, and an inclined groove 6 a that guides coolant mixed with chips to the chip receiver 2 is formed at the bottom of the coolant receiver 6. Has been. Below the chip receiver 2, a coolant tank 1 is provided as a coolant recovery unit that recovers and accumulates coolant. Reference numeral 7 denotes a splash guard that prevents the coolant from splashing outside.

The coolant in the coolant tank 1 is pumped up by a pump (not shown), and the coolant is sprayed to the machining part of the tool 4 and the workpiece 5 through a nozzle (not shown) to cool the tool and the workpiece. The chips generated by the cutting process are mixed with the coolant, and the coolant mixed with the chips is collected in the coolant tank 1 via the coolant receiver 6 and the chip receiver 2. In this recovery process, the chips are separated from the coolant by the chip receiver 2.
The circulation of the coolant and the separation and collection of the chips from the coolant are the same as in the past, and the present invention is a chip collection apparatus in which an improvement is added to the chip receiver.

FIG. 2 is an explanatory view of the chip receiver 2 of the chip collecting apparatus of the present embodiment. 2A is a plan view of the chip receiver 2, FIG. 2B is a front view, and FIG. 2C is a side view.
The chip receiver 2 is provided at the center thereof, and has a bottom surface composed of a chip accumulation portion 22 formed of a flat plate member, and a mesh portion 21 connected to both sides of the chip accumulation portion 22. The upper part is open. The mesh portion 21 is inclined, and the connecting portion with the chip accumulation portion 22 of the flat plate member at the center portion is at the lowest position, forming an inclined surface of the mesh inclined upward from the position. is doing. A wall member 24 is provided around the periphery of the chip accumulation portion 22 other than the connection position.

  The chip accumulation part 22 protrudes further forward than the part of the mesh part 21 on both sides, and an inclined part 23 that is folded upward at the tip is formed. Further, on both sides between the portion protruding from the mesh portion 21 of the chip accumulation portion 22 and the inclined portion 23, a wall member 25 rising from a flat plate member of the chip accumulation portion 22 is provided. A chip reservoir is formed at the tip of the powder accumulation part 22.

As shown in FIG. 1, the chip receiver 2 is disposed above the coolant tank 1, and the coolant mixed with chips flowing out from the inclined groove 6 a of the coolant receiver 6 is a portion of the mesh portion 21 of the chip receiver 2. Led to.
FIG. 3 is an explanatory diagram for explaining the flow of the coolant and the chips according to a longitudinal sectional view of the chip receiver 2 and the coolant tank 1. FIG. 4 is a plan view seen from above the chip receiver 2 and is an explanatory view for explaining the flow of coolant and chips.

  The coolant mixed with the chips guided by the inclined grooves 6a of the coolant receiver 6 is discharged to the mesh portion 21 of the chip receiver 2 as indicated by reference numeral A in FIG. Therefore, the coolant passes through the mesh of the mesh portion 21 and flows into the lower coolant tank 1. On the other hand, the chips mixed in the coolant are caught by the mesh of the mesh portion 21 and accumulated, and the coolant and the chips are separated by the mesh portion 21.

  As shown in FIGS. 3 and 4, the coolant tank 1 has a plurality of nozzles 3 a disposed at positions facing the inclined mesh portion 21 of the chip receiver 2, and pumps up the coolant in the coolant tank 1 with a pump P. The nozzle 3a is configured to be diffused and ejected from the nozzle 3a toward the inclined surface of the mesh portion 21 as indicated by reference numeral B. Further, as shown in FIG. 4, the coolant tank 1 has a flat plate member of the chip accumulation portion 22 on the side facing the side where the inclined portion 23 of the chip accumulation portion 22 of the chip receiver 2 is formed. A plurality of nozzles 3b for injecting coolant are provided. And it is comprised so that the coolant in the coolant tank 1 may be pumped up with the pump P, and may be injected from the nozzle 3b to the upper surface of the flat board member of the chip accumulation part 22. FIG.

  As described above, the coolant mixed with the chips passing through the processed parts of the tool 4 and the workpiece 5 is discharged to the mesh portion 21 of the chip receiver 2. Chips are deposited on the mesh portion 21. When the chips are collected, coolant is sprayed from the nozzle 3a disposed at a position opposite to the inclined portion of the mesh portion 21, so that the chips caught by the mesh of the mesh portion 21 are sprayed. The coolant is pushed along the inclined surface of the mesh portion 21 to the chip accumulation portion 22. The coolant mixed with the chips is introduced from the inside of the chip receiver 2, and the chips are accumulated inside the mesh part 21. On the other hand, since the coolant is sprayed from the outside of the chip receiver 2 (the outside of the mesh portion 21) from the nozzle 3a and hits, the accumulated chips easily come off the mesh and enter the portion of the chip accumulation portion 22. It will be accumulated. This also eliminates clogging.

  In this way, after the chips are accumulated in the portion of the chip accumulation portion 22, the chip accumulation portion 22 is arranged in the direction of the connecting line between the chip accumulation portion and the mesh portion by the nozzle 3b as indicated by an arrow C in FIG. By spraying the coolant toward the flat plate member, the chips accumulated in the portion of the chip accumulation portion 22 are collected at the position of the inclined portion 23 that rises forward. The chips collected in this way can be scraped off, and the removal of the chips can be facilitated.

  In the above-described embodiment, the nozzle 3b that injects the coolant toward the portion of the chip accumulation unit 22 is provided, but the nozzle 3b is not necessarily provided. When the coolant is sprayed from the nozzle 3a, the chips transferred from the mesh portion 21 to the chip accumulation portion 22 are accumulated on the chip accumulation portion 22. Since the accumulating portion 22 is a flat plate member, it is easy to scrape it up, and it can be easily removed without collecting the chips on the inclined portion 23 by the nozzle 3b.

  In the embodiment described above, the mesh portion 21 is the chip receiver 2 disposed on both sides of the chip accumulation portion 22, but the mesh portion 21 may be provided only on one side.

  In addition, the chip receiver is formed on a truncated cone or a truncated pyramid having a smaller lower part, the inclined surface is a mesh part, the lower part is a chip collecting part of a flat plate member, and the upper part is opened. Good. This chip receiver is placed on the top of the coolant tank so that the coolant discharge port that has been mixed with chips through the machined part is at the top of this chip receiver (not necessarily at the top of the slanted mesh). To do. Also, a nozzle that injects coolant from the outside toward the inside toward the mesh portion is arranged, and the chips and coolant are separated at the mesh portion as in the above-described embodiment, and the chips are cut at the center by the nozzle. It may be made to accumulate in a powder accumulation part.

  Moreover, in order to make it easy to take out the chips accumulated in the chip accumulation part, a hole that can be opened and closed by a stopper or an opening / closing door is formed in the chip accumulation part, and the chips are removed from the chip accumulation part. In some cases, this hole may be opened to remove chips from the hole.

  Further, in the above-described embodiment, the example in which the nozzles 3a and 3b are attached to the coolant tank 1 has been described. However, the nozzles 3a and 3b are provided on the chip receiver 2 itself or a nozzle attachment member is provided on a machine tool, May be arranged at a predetermined position.

It is a schematic diagram of the machine tool with which the chip collection device of the present invention was attached. It is explanatory drawing of the chip receiver in the chip collection | recovery apparatus of one Embodiment of this invention. It is explanatory drawing by the principal part sectional drawing explaining the flow of the coolant and chip in the same embodiment. It is explanatory drawing by the top view seen from the upper direction of the chip receptacle explaining the flow of the coolant and the chip in the same embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coolant tank 2 Chip receptacle 3 Spindle head 4 Tool 5 Work piece 6 Coolant receptacle 6a Inclination groove 21 Mesh part 22 Chip accumulation part 23 Inclination part 24,25 Wall member 3a, 3b Nozzle

Claims (4)

In the machine tool chip collection device that collects the chips generated during workpiece machining,
A chip receiver comprising a flat plate-shaped member and a bottom surface formed of a mesh portion connected to the chip stack and inclined upward;
A chip recovery device for a machine tool, comprising: a nozzle that injects coolant from the outside of the mesh portion of the chip receiver toward the inside of the chip receiver.   On the upper surface of the flat plate-like member of the chip accumulation portion, in the direction of the connecting line between the chip accumulation portion and the mesh portion, and toward the upper surface of the flat plate-like member of the chip accumulation portion The chip collection device for a machine tool according to claim 1, further comprising a nozzle for collecting chips for injecting coolant from one side to the other side.   The chip collection device for a machine tool according to claim 2, wherein a chip collecting part is formed on a side of the chip accumulation part facing a side where the nozzle for collecting chips is disposed. The chip collection device for a machine tool according to claim 1, wherein the chip accumulation part is formed with a hole for opening and closing the chip that can be opened and closed.

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