JP5322525B2 - Cleaning device for vertical lathe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To spray a cutting liquid to chips deposited on an inner side of an article mounted on a table to wash the chips, to sufficiently ensure a pressure and a flow rate of the cutting liquid used for washing, and to inexpensively constitute a device. <P>SOLUTION: The vertical type lathe is provided with a vertical hollow main spindle 12 for fixing a workpiece placement table 21 to an upper end. A cutting liquid hose 41 is penetrated on an axis of the main spindle 12 so as to make rotation of the main spindle 12 free. A nozzle 51 is connected to an upper end opening of the cutting liquid hose 41. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a cleaning device for cleaning a workpiece placement table in a vertical lathe.

  Conventionally, as this type of cleaning apparatus, a vertical lathe having a vertical spindle with a workpiece mounting table fixed on the upper end thereof is known in which a cutting fluid nozzle is arranged at the periphery of the table. .

  In a vertical lathe, particularly a large vertical lathe, a large object such as a claw or setup is installed on a table.

  As in the above-described conventional apparatus, even if an attempt is made to clean the chips accumulated on the table by spraying the cutting fluid from the nozzles arranged on the periphery of the rotating table, some chips In particular, the chips accumulated on the inside of the load could not be sufficiently cleaned. This has contributed to an increase in the cleaning time at the time of workpiece replacement.

  As another cleaning device, the cutting fluid passage is provided on the axis of the main shaft so as to be rotated together with the main shaft, a nozzle is connected to the upper end opening of the cutting fluid passage, There is known one in which a cutting fluid external pipe is connected via a rotary joint (for example, see Patent Document 1).

In this other conventional apparatus, it is possible to eject the cutting fluid from the nozzle to the chips deposited on the inside of the mounted object and to clean the chips. However, in other conventional devices, it is essential to use a rotary joint. In the rotary joint, it is inevitable that the cutting fluid passage is restricted due to its structure. Therefore, the discharge pressure and flow rate of the cutting fluid are lost. Furthermore, the rotary joint requires high sealing performance. Therefore, in order to protect the rotary bearing from the cutting fluid containing fine sludge, a large-scale device is required, and there is a problem that the cost of the device is high.
JP-A 64-20907

  An object of the present invention is to allow cutting fluid to be jetted onto the chips accumulated inside the load on the table and to clean the chips, and the pressure and flow rate of the cutting fluid to be used for cleaning. It is another object of the present invention to provide a cleaning apparatus that can sufficiently ensure the above-described characteristics and that can be configured at low cost.

  In the cleaning device according to the present invention, in a vertical lathe having a vertical main shaft with a work table placed on the upper end, a passage forming member is passed over the axis of the main shaft so as to freely rotate the main shaft. The cutting fluid passage is formed in a vertically penetrating manner in the passage forming member, and a nozzle is connected to the upper end opening of the cutting fluid passage.

  In the cleaning apparatus according to the present invention, the passage forming member cannot be rotated with the rotation of the main shaft. Therefore, the passage forming member and the cutting fluid external pipe can be directly connected without using a rotary joint or the like. If a rotary joint is not used, there is no fear that the rotary joint will cause a decrease in the pressure and flow rate of the cutting fluid. In addition, the cutting fluid can be ejected from the nozzle onto the chips accumulated on the inside of the load, and the chips can be washed.

  Furthermore, it is preferable that the cutting fluid external pipe is directly connected to the lower end opening of the cutting fluid passage.

  Further, when a scraper blade extending in the radial direction of the main shaft and facing the upper surface of the table is fixed to the upper end portion of the passage forming member, the chips accumulated on the upper surface of the table can be scraped off by the scraper blade. it can.

  Further, when the brush is provided on the scraper blade so that the tip of the brush is in contact with the upper surface of the table, the scraper blade can be scraped efficiently.

  According to the present invention, it is possible to spray the cutting fluid onto the chips accumulated inside the mounted object on the table and clean the chips, and the pressure and flow rate of the cutting fluid for use in cleaning. Is provided, and a cleaning device that can be configured at low cost is provided.

  Embodiments of the present invention will be described below with reference to the drawings.

  Referring to FIG. 1, in a large vertical lathe, a vertical hollow main shaft 12 is supported by a main shaft box 11 in a vertically penetrating manner. An upper bearing 13 and a lower bearing 14 are respectively interposed between the top wall and the bottom wall of the main shaft box 11 and the corresponding portions of the main shaft 12 that are penetrated through the upper and lower walls. A bottom cover 15 is fixed to the bottom wall of the main shaft box 11 at a position where the main shaft 12 penetrates.

  A horizontal table 21 is fixed to the upper end surface of the main shaft 12. At the center of the table 21, a stepped communication hole 22 with a vertically penetrating step that is communicated with the hollow portion of the main shaft 12 is formed. An upper lid 23 is fixed to the upper end opening edge of the communication hole 22. Chuck claws 24 are provided at a plurality of locations on the outer peripheral edge of the upper surface of the table 21. A work W is chucked on the chuck claw 24.

  An upper and lower penetrating shaft hole 25 is formed concentrically with the main shaft 12 in the upper lid 23. A vertical holder shaft 26 is inserted into the shaft hole 25.

  Referring to FIG. 2, an oil seal 31 and a bearing 32 are vertically interposed between the peripheral surface of the shaft hole 25 and the outer surface of the holder shaft 26. An annular cover 33 is provided at the upper end of the outer surface of the holder shaft 26 so as to protrude above the upper end opening edge of the shaft hole 25 integrally therewith. A cutting fluid passage 34 is formed in the axis of the holder shaft 26.

  A cutting fluid hose 41 extending from an external pipe (not shown) is connected to the lower end opening of the cutting fluid passage 34. The cutting fluid hose 41 is surrounded by a vertical cylindrical detent 42 raised from the bottom lid 15. The lower end of the rotation stopper 42 is fixed to the bottom lid 15. The upper end of the rotation stopper 42 is connected to the holder shaft 26 by a vertical pin 43.

  A nozzle 51 is connected to the upper end opening of the cutting fluid passage 34. The nozzle 51 is directed outward in the radial direction of the axis of the main shaft 12 and faces the chuck claw 24 from the inside.

  A scraper blade 52 is fixed to a part of the cover 33 in the circumferential direction. The scraper blade 52 is in the form of an arm made of a plate or a bar that is opposed to the upper surface of the table 21 and extends outward in the radial direction of the axis of the main shaft 12. The scraper blade 52 is provided with a brush 53 so that the tip of the brush 53 is in contact with the upper surface of the table 21.

  Even when the main shaft 12 and the table 21 are rotated, the holder shaft 26 and the cutting fluid hose 41 are held stationary. When the cutting fluid is supplied to the nozzle 51 through the cutting fluid hose 41, the supplied cutting fluid is ejected from the nozzle 51. The table 21 and its peripheral part are cleaned by the jetted cutting fluid. In addition, chips and the like deposited on the upper surface of the table 21 are cleaned by the scraper blade 52 and the brush 53.

  In the above, if the cutting fluid hose 41 is made of a non-flexible material such as a steel pipe and is fixed to the bottom cover 15, in particular, a device such as the rotation stopper 42 is unnecessary. The scraper blade 52 and the brush 53 may be installed as necessary.

It is a vertical longitudinal cross-sectional view of the washing | cleaning apparatus by this invention. It is a partially expanded sectional view of FIG.

Explanation of symbols

12 Spindle
21 tables
41 Cutting fluid hose
51 nozzles

Claims (4)

In Vertical lathe has a vertical shape spindle fixing the workpiece placement table on the upper end, on the main shaft and the table axis, are passed to the passage forming member is a free rotation of the spindle and the table, the passage The forming member is configured to be held stationary even when the main shaft and the table are rotated . The cutting fluid passage is formed in the passage forming member in a vertically penetrating manner, and a nozzle is formed at the upper end opening of the cutting fluid passage. The cleaning equipment that is connected.   The cleaning device according to claim 1, wherein a cutting fluid external pipe is directly connected to a lower end opening of the cutting fluid passage.   The cleaning apparatus according to claim 1, wherein a scraper blade extending in a radial direction of the main shaft and facing the upper surface of the table is fixed to an upper end portion of the passage forming member. The scan click Repaburedo, brush cleaning apparatus according to claim 3 which is provided so as to contact the tip and the table top.

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