JP4280941B1 - Micro lubrication device - Google Patents

Abstract

An oil supply nozzle that eliminates contact between the nozzle opening and the cutting blade, eliminates the trouble of adjusting the position of the nozzle, minimizes the interference area between the nozzle and the three-dimensional workpiece, and eliminates the trouble of removing the cutting fluid by a large amount of oiling. , Providing a micro oil supply device that can be mounted on a vertical desktop tapping machine or drilling machine with the lower part of the spindle exposed.
SOLUTION: A wire 14 inserted in an oil supply nozzle 7 always keeps a contact state at the upper part of a tap cutting blade 4 even during operation, and is self-biased in the direction of the tap cutting blade by an elastic force. The fixed oil supply nozzle is fixed to the main shaft 2 that synchronizes with the vertical movement of the tap cutting blade, so that there is no need for contact separation and position adjustment of the nozzle port 15 and the interference area with the three-dimensional workpiece 16 is minimized. The nozzle opening prevents the front / rear and top / bottom shifts with respect to the cutting edge, and the nozzle fastener 13 for holding the nozzle in the direction of the cutting edge ensures the effect of contact and biasing. Since it is a very small amount, there is no need for removal, and an inexpensive micro oil supply device can be realized.
[Selection] Figure 1

Description

The present invention relates to an apparatus for supplying a small amount of cutting fluid to a cutting blade that can be easily mounted on a vertical desktop tapping board or drilling machine.

Conventionally, in order to supply a small amount of cutting fluid to the cutting edge, it has been manually performed by a method of applying by a brush or spray. If this operation takes a long time, there is a problem that the cost is increased due to complexity.

As an improvement measure, a cost reduction is achieved by using an oil supply device that has been invented or devised in the past or a general-purpose injection or oil supply device.
JP-A-56-15950 JP-A-9-168908

The problem to be solved is an invention or device in the past for supplying cutting oil or cutting coolant (hereinafter referred to as cutting fluid) to the cutting edge or processing location using a vertical desktop tapping machine or drilling machine. The lubrication device and general-purpose lubrication devices that have been used include a method in which the tip of the nozzle comes into contact with the cutting blade to lubricate the cutting fluid, and a method in which a small amount of fuel is injected from the tip of the nozzle toward the cutting blade and the processing location. However, in the former, the tip of the nozzle has moved away from the cutting blade that moves up and down, and the cutting fluid has not been supplied to the machining location. In order to solve this problem, there is a risk of entrainment in the method in which the wire is passed through the cutting blade. In addition, the problems common to the devices of both methods are the need to adjust the height of the nozzle and change the position of the nozzle stand in accordance with the difference in machining stroke and the difference in the workpiece. It was necessary to change frequently. In addition, the nozzle connected to the oil supply device is located at a position that does not synchronize with the vertical movement of the cutting blade, and a three-dimensional workpiece or a workpiece having a step cannot be lubricated because the nozzle interferes with the workpiece. In addition, the use of an oil supply device by a method of adding a large amount of oil has been used, but it has been troublesome to remove the waste of the liquid amount and the cutting fluid adhering to the workpiece.

The present invention connects a lubrication nozzle with a wire inserted into a transparent soft tube to a micro lubrication device that drops by its own weight of the cutting fluid, so that the contact state is always self-held on the upper part of the cutting blade even during operation . It is characterized by a flexible oil supply nozzle that has a nozzle port at the tip that always self-energizes in the direction of the cutting edge by elastic force and prevents deviation from the cutting edge if necessary. In addition, the nozzle fixed position is the main axis that synchronizes with the vertical movement of the cutting blade , and the nozzle fastener that supports the nozzle in the front and rear and up and down directions for holding the nozzle in the direction of the cutting blade is attached. A solution is achieved.

The flexible oiling nozzle with a wire inserted into the transparent soft tube of the present invention has a nozzle port at the tip to prevent displacement and always keeps the contact state self-biased by the elastic force in the direction of the cutting edge. Therefore, it is possible to reliably capture the cutting blade that moves up and down while rotating. Also, the oiling nozzle is fixed to the main shaft that synchronizes with the vertical movement of the cutting edge, and in addition to the effect of eliminating the contact separation between the nozzle opening and the cutting edge, the nozzle of the nozzle due to differences in machining strokes, differences in workpieces, etc. It is possible to eliminate the trouble of adjusting the position and changing the position of the nozzle stand, etc., and it is possible to restart the processing in a short time and improve the working efficiency. In addition, since the nozzle opening that prevents displacement is in contact with the upper part of the cutting blade and the wire inserted into the soft tube, the bending radius can be reduced compared to the bellows tube nozzle, etc., so the interference area with the workpiece is The minimum amount of the cutting fluid can be reliably applied to the cutting edge and dripped with its own weight. In addition, the nozzle clamp that supports the nozzle in the direction of the cutting edge in three points with respect to the front, rear, top and bottom, ensures the contact between the nozzle opening and the upper part of the cutting edge and the biasing effect. . The maximum effect can be provided and can be provided on all vertical desktop tapping machines and drilling machines in which the lower part of the spindle is exposed from the main body. By the way, most of the vertical desktop tapping machines and drilling machines have the lower part of the spindle exposed from the main unit.

The micro lubrication device that drops by the dead weight of the cutting fluid is an energy saving device because it does not use another power source, that is, a compressor, a pump, etc., and since the nozzle itself has a biasing force, it provides an inexpensive device. be able to. In addition, when changing the cutting edge frequently according to the difference in workpieces and workpieces of a small lot, or for long-time processing that repeats interruption and restart on the same workpiece, the inside of the nozzle is closed when the open / close cock is closed. The cutting fluid stays without flowing out, and when the opening and closing cock is opened at the time of resuming the machining, the cutting fluid staying in the nozzle starts to drip immediately, so that oil can be supplied to the cutting edge in a short time. Moreover, the difference from the conventional universal nozzle such as a bellows tube is a material that can be easily cut, connected , exchanged, etc. by using a transparent soft tube, and the liquid state in the nozzle can be confirmed from the viewpoint of processing work. In the unlikely event that the nozzle interferes with the workpiece, the nozzle can be easily bounced up and easily restored, and it is also possible to avoid interference by using a long blade. Also, the wire inserted into the nozzle can be fixed in the tube by bending the tube to the nozzle fastener without fixing it with just brazing or screws, making it easy to replace when the wire breaks. Yes. In addition, since the nozzle ports of the same and different diameters are in contact with the upper part of the cutting blade, they can be easily replaced as consumables due to wear or deterioration.

An embodiment of the present invention will be described with reference to FIGS. 1, 2, 4, and 5. FIG. A perforated oil pot 9, a transfer tube 8, a flow control cock 10, an opening / closing cock 11, and an oil supply tube 7 (hereinafter referred to as a tube 7) are connected to the vertical desktop tap panel shown in FIG. Arranged at the top of the. A nozzle fastener 13 is attached to the lower portion of the main shaft 2 with a belt fastener 12. Then insert the wire 14 plus the appropriate length to length to lateral fastening of the nozzle fastener 13 from the distal end of the tube 7 into the tube 7, the vertical nozzle fastener 13 showing the tube 7 tip 5 was inserted into the hole of the two places in the direction to connect the fuel supply port 15 shown in Figure 4, is contacted bent on top of the tap cutting edge 4 shown in FIG. 2, the horizontal nozzle fastener 13 top of the wire 14 in-tube 7 Bends in direction stop. The total length of the tube 7 and the transfer tube 8 is set to have a margin with respect to the maximum stroke of the spindle 2 of the machine specification. In this embodiment, the tube 7 and the transfer tube 8 are transparent soft tubes having an outer diameter of 6 mm and an inner diameter of 3 mm, and the wire 14 is a stainless wire having a diameter of 0.9 mm. The above is the configuration of the micro-oil supply device according to the present invention. Next, the usage method and function will be described. The tap cutting blade 4 attached to the chuck 3 is rotated and moved up and down by a switch operation (not shown) of the vertical desktop tap board shown in FIG. 1 to perform tapping when the three-dimensional workpiece 16 on the table 6 is bent. At this time, since the tube 7 of the present apparatus is fixed to the main shaft 2, it synchronizes with the vertical movement of the tap cutting edge 4 in a state where the contact and the bias are always self-held. On the other hand, the cutting fluid 17 in the perforated oil pot 9 passes through the tube 7 connected to the transfer tube 8, comes into contact with the upper part of the tap cutting blade 4, drops by its own weight from the energized oil supply port 15, and taps. Oil is applied to the cutting edge of the cutting edge 4. Although the shape of the homogeneously different diameter oil supply port 15 corresponds to a diameter of up to about 20 mm with respect to the difference in the diameter of the tap cutting blade 4, a notch shape difference is prepared as necessary. The nozzle fastener 13 functions to secure the effect of urging and contacting the cutting edge direction and also has a length adjusting function of the tube 7 for mounting the various mechanical, further mild tube 7 Is possible. The cutting fluid 17 is filled up to the distal end of the tube 7 by operating the open / close cock 11 after mounting the apparatus. When tapping is started on the three-dimensional workpiece 16, the opening / closing cock 11 is opened, and the amount of dripping from the oil supply port 15 is adjusted by the flow rate adjusting cock 10 according to the processing pace, so that a small amount of cutting fluid 17 is applied to the cutting edge. And processing is continued. Further, when the machining is interrupted or terminated, the open / close cock 11 is closed. The cutting fluid 17 stays in the tube 7 without wasteful outflow from the tube 7 because the inner diameter of the tube 7 is thin. Thereafter, only the opening / closing cock 11 can be operated, and the liquid can be immediately dropped and stopped immediately without operating the flow rate adjusting cock 10 on the equivalent workpiece. However, since the dropping interval differs depending on the remaining amount of the cutting fluid 17 in the perforated oil pot 9, it is necessary to adjust the flow rate adjusting cock 10, but this is not a level that hinders work efficiency.

An application embodiment of the present invention will be described with reference to FIGS. When metal processing using the vertical tabletop drilling machine shown in FIG. 3 is performed, that is, drilling, dishing, chamfering, etc., the oil supply port 15 of the same and different diameter connected to the oil supply tube 7 at the upper edge of the drill cutting blade 5 is used. Are in contact with each other and urged, a small amount of cutting fluid is reliably supplied to the cutting edge of the drill cutting edge 5. The shape of the homogeneous and different diameter oil supply port 15 shown in FIG. 4 corresponds to the diameter of the drill cutting edge 5 up to about 20 mm, but a different notch shape is available if necessary. Is done. Further, since the drill cutting blade 5 with a large diameter exceeds the region of a small amount of oil supply, it is excluded from the object of use in this apparatus, but is not particularly drawn from several millimeters of diameter. In addition, a special cutting edge such as a reamer, dish fir, chamfering, etc. can also feed a small amount of oil to the cutting edge in the same manner as the drill cutting edge 5. The other details of the description will be omitted because the contents overlap with those of the first embodiment.

It can be installed on vertical desktop tapping machines and drilling machines where the lower part of the spindle is exposed.

It is the whole front view which attached the micro oil supply device of the present invention to the vertical desktop tap board. It is the principal part front view which attached the tap cutting blade 4 to the vertical desktop tap board. It is the principal part front view which attached the drill cutting blade 5 to the vertical tabletop drilling machine. FIG. 3 is a perspective view showing the shape of an oil filler opening 15 . FIG. 5 is a perspective view showing the shape of a nozzle fastener 13.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Main axis | shaft 3 Chuck 4 Tap cutting blade 5 Drill cutting blade 6 Table 7 Oil supply tube 8 Transfer tube 9 Perforated oil pot 10 Flow control cock 11 Opening / closing cock 12 Belt fastener 13 Nozzle fastener 14 Wire 15 Oil supply port 16 Three-dimensional processing 17 Cutting fluid

Claims (2)

An oil supply tube having an oil supply port at the tip which inserts a wire into a soft tube and self-holds the urging mode and the adjustment function of the urging force and prevents the contact state with a working object located at the bending end. 2. The micro-fuel supply device according to claim 1, wherein when supplying a small amount of the cutting fluid to the working object, a micro-fuel supply is performed via the oil supply port, wherein the oil supply port forms a part of the tubular body into a work object shape. 2. The micro-oil supply device according to claim 1, wherein the tube has a cutout outer shape, and the tube is supported at three points by a machine tool having a working object.

Images