JP2011067877A - Method for adhering lubricant for machining tool and method for machining - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for adhering lubricant for a machining tool applying the minimum amount of lubricant required for machining only to a required position and a method for machining using the same. <P>SOLUTION: The method for applying the lubricant for the machining tool 10 machining a machined material 2 intermittently when seen from the machining tool 10 includes a step of applying the lubricant to machining involved regions R1, R2 of the machining tool 10 contacting the machined material 2 before the machining tool 10 contacts the worked material 2. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for attaching a lubricant to a processing tool and a processing method using the same.

In machining, it is often processed while supplying a liquid to a processing tool or a workpiece. The purpose of supplying the liquid is a cooling action, a lubricating action, a chip discharging / cleaning action, etc., among which the lubricating action is particularly important. For example, in cutting, when cutting is performed at high speed, it is also said that about 80% of the amount of heat generated during machining is taken away by chips. Furthermore, due to recent improvements in heat resistance of processing tools, cooling of the processing tools may not necessarily be required depending on the type of workpiece and cutting conditions. Depending on the cutting shape and cutting conditions, chip discharge and cleaning may not be required as a function of the supplied liquid. That is, only a high lubricating action may be required for the supplied liquid.
The supplied liquid is called by various names depending on the purpose and the type of processing, but in the present invention, it is called a lubricating liquid.

  There is also a report that the power cost required to supply the lubricating liquid accounts for 30% of the machining cost of the machine tool. For this reason, some parts have been put into practical use, such as dry processing, which performs processing while supplying nitrogen, argon, oxygen, etc. in order to reduce the cost of the lubricating liquid, or MQL (Minimal Quantity Lubrication), which sends lubricating liquid droplets by air. ing.

  However, dry processing is limited to a very narrow range of application. In addition, MQL processing is concerned that excess mist may scatter in the work environment and cause health problems for workers. For this reason, vegetable oil-derived synthetic esters, which are said to be highly biodegradable, are used as lubricating liquids. However, vegetable oil-derived synthetic esters are several times more expensive than general lubricating liquids, leading to increased manufacturing costs. It is connected. Further, in the MQL processing, since the ratio of the lubricating liquid that actually adheres to the processing point with respect to the mist spray amount (liquid amount) of the lubricating liquid is small, a lubricating liquid film having a necessary thickness is always formed near the processing point. There is no confirmation that.

  Efforts have been made to supply lubricating liquid intensively to the processing point and its vicinity. For example, Japanese Patent Application Laid-Open No. 2000-334653 discloses a technique for removing clogging and processing heat by continuously supplying a lubricating liquid toward the cutting edge of a blade that acts on cutting.

JP 2000-334653 A

  However, in the above-described method of continuously supplying the lubricating liquid to the blade tip, when applied to a carbide tool or the like generally used as a cutting tool, the temperature is increased by the cutting heat during cutting. Since the tool is cooled by supplying a large amount of lubricating liquid when not cutting, the chip tends to cause minute chipping due to thermal cycle fatigue. Further, by continuously supplying the lubricating liquid around the cutting edge, the amount of the lubricating liquid used is increased.

  In view of the above problems, the present invention is to provide a method of attaching a lubricating liquid to a processing tool and a processing method using the same, which can reduce the amount of the lubricating liquid used and improve the life of the processing tool. And

  In order to solve the above-mentioned problems, the present inventor has made extensive investigations, and before the processing tool processes the workpiece in the intermittent processing, the lubricant is applied in a limited manner to the processing participation area of the processing tool in advance. As a result, the present inventors have found a method of attaching a minimum amount of lubricating liquid necessary for processing only to a necessary portion.

  The present invention completed on the basis of the above knowledge is, in one aspect, a method of attaching a lubricant to a processing tool for intermittently processing a workpiece as viewed from the processing tool, wherein the processing tool contacts the workpiece. This is a method for attaching a lubricating liquid to a processing tool, including a step of restricting a lubricating liquid to be applied to a processing-related region of the processing tool that comes into contact with the workpiece before the processing.

  In one embodiment of the method for attaching a lubricant to a processing tool according to the present invention, the step of attaching the lubricating liquid to the processing-related region of the processing tool is a step of arranging droplets of the lubricating liquid in the processing-related region. .

  In one embodiment, the method of attaching a lubricating liquid to a processing tool according to the present invention includes a step of attaching a lubricating liquid to a processing-related area of the processing tool by using a device that continuously discharges liquid droplets of the lubricating liquid. It is to deposit droplets on the involved area.

  In one embodiment, the method for adhering a lubricating liquid to a processing tool according to the present invention includes the step of adhering the lubricating liquid to a processing-related region of the processing tool, charging the liquid droplets of the lubricating liquid, and processing the charged liquid droplets. To attach to the involved area.

  In one embodiment of the method for attaching a lubricating liquid to a processing tool according to the present invention, the step of attaching the lubricating liquid to the processing-related region of the processing tool is to use a piezo element actuator type supply mechanism.

  In one embodiment of the method for attaching a lubricating liquid to a processing tool according to the present invention, the step of attaching the lubricating liquid to the processing-related region of the processing tool uses a supply mechanism of an electromagnetic valve system.

  In one embodiment, the method for adhering a lubricating liquid to a processing tool according to the present invention includes the step of adhering the lubricating liquid to the processing-related region of the processing tool, wherein the lubricating liquid having a droplet diameter of 10 μm to 2 mm is applied to the processing-related region. It is to deposit droplets.

  In one embodiment of the method for attaching a lubricating liquid to a processing tool according to the present invention, the processing-related area includes a cutting edge of the blade of the processing tool, a contact area with the chip of the workpiece on the rake face of the cutting tool, and a flank of the blade. It is a contact area | region with the finishing surface with the workpiece in.

  Another aspect of the present invention is a processing method for intermittently processing a workpiece as viewed from the processing tool, wherein the processing tool contacts the workpiece before the processing tool contacts the workpiece. This is a processing method including a step of selectively adhering a lubricating liquid to a processing participation area.

  In one embodiment, in the processing method according to the present invention, the step of adhering the lubricating liquid to the processing participation region of the processing tool is a step of arranging the lubricant liquid droplets in the processing participation region.

  In one embodiment, the processing method according to the present invention is such that the step of attaching the lubricating liquid to the processing-related area of the processing tool is performed on the processing-related area using a device that continuously discharges the liquid droplets of the lubricating liquid. It is to arrange the droplets.

  In one embodiment of the processing method according to the present invention, the step of attaching the lubricating liquid to the processing-related area of the processing tool charges the liquid droplets of the lubricating liquid and arranges the charged liquid droplets in the processing-related area. That is.

  In one embodiment of the processing method according to the present invention, the step of attaching the lubricating liquid to the processing-related region of the processing tool uses a piezo element actuator type supply mechanism.

  In one embodiment of the processing method according to the present invention, the step of attaching the lubricating liquid to the processing-related region of the processing tool is to use an electromagnetic valve type supply mechanism.

  In one embodiment of the processing method according to the present invention, the step of attaching the lubricating liquid to the processing-related region of the processing tool attaches the droplet of the lubricating liquid having a droplet diameter of 10 μm to 2 mm to the processing-related region. That is.

  In one embodiment, the processing method according to the present invention includes: a cutting tool edge of a processing tool; a contact area with a chip of a workpiece on a rake face of the blade; and a workpiece on a flank of the blade. This is the contact area with the finished surface.

  According to the present invention, since a lubricating liquid film having a necessary thickness is always formed on the cutting edge that has reached the processing point, a sufficient lubricating effect is exhibited during processing. Further, the amount of extra lubricating liquid that directly adheres to the chips or the workpiece can be reduced, and pretreatment for removing the lubricating liquid becomes unnecessary. The amount of lubricating fluid discharged into the environment is also reduced, and it is expected to reduce recycling costs. Further, since rapid cooling of the processing tool is suppressed, chipping of the blade due to thermal cycle fatigue can be prevented, and the life of the processing tool can be extended.

It is the schematic which shows an example of the processing apparatus which can be utilized for the lubricating liquid adhesion method of the processing tool which concerns on embodiment of this invention. It is explanatory drawing which shows an example of the blade edge | tip part of the processing tool in cutting. FIGS. 3A to 3C are schematic views showing an example of a method for arranging lubricating droplets. FIG. 4A and FIG. 4B are schematic views illustrating the formation range of the lubricating liquid film.

  Next, embodiments of the present invention will be described with reference to the drawings. The embodiment described below exemplifies a method for embodying the technical idea of the present invention, and the technical idea of the present invention is not limited to the following.

-Processing equipment-
A processing apparatus 100 that performs cutting will be described as an example of the processing apparatus 100 that can be used in the method for attaching a lubricant to a processing tool according to an embodiment of the present invention. As shown in FIG. 1, the processing apparatus 100 includes a processing tool 10 that cuts the workpiece 2 and supply mechanisms 3 a and 3 b that supply a lubricating liquid to the processing tool 10.

  The processing tool 10 is not particularly limited as long as it is an intermittent tool as viewed from the processing tool 10 side that requires supply of a lubricating liquid. In FIG. 1, a milling cutter having a plurality of blades 1 along the circumferential direction is illustrated as the processing tool 10, but in addition, for example, a rotary processing tool such as a gang slitter, reciprocation such as shearing and pressing, and the like. The processing tool 10 can be any tool that performs interrupted machining with a single blade on a processing tool or a lathe (having a workpiece material with an intermittent cross section). In other words, the present invention can be applied to any one or a combination of plastic working such as press working, forming work, shearing work, etc. in addition to cutting work including milling work and lathe work.

  When the processing tool 10 rotates in the direction of the arrow in FIG. 1, the plurality of blades 1 arranged along the circumferential direction intermittently contact the workpiece 2 and the surface of the workpiece 2 is cut. The The supply mechanisms 3a and 3b are configured so that the blade 1 rotates while the blade 1 is not cutting the workpiece 2, that is, after the workpiece 2 is cut, until it rotates and then contacts the workpiece 2. 11. Supplying a small amount of lubricating liquid to at least one of the rake face (see FIG. 2) of the blade 1 that is in contact with the chips 5 and the flank 12 (see FIG. 2) of the blade 1 in contact with the workpiece 2 As a result, the lubricating liquid is attached in a limited manner to the processing-related area of the workpiece 2.

  The supply mechanisms 3a and 3b may be provided with either one. That is, the supply of the lubricating liquid may be in the form of supplying the lubricating liquid from the outside of the processing tool 10 by adjusting the supply angle of the supply mechanism 3a (supply mechanism 3a). Further, a mode in which the lubricating liquid is directly supplied from the inside of the processing tool 10, specifically, a supply portion (not shown) is provided in a groove or the like provided between the blade 1 and the blade 1, and the blade is directly provided from the supply portion. 1 may be configured to supply the lubricating liquid (supply mechanism 3b).

  By providing the supply portion in the groove of the processing tool 10, the supply of the lubricating liquid is less affected by the surrounding air resistance due to the rotation of the processing tool 10. Can be supplied. In addition, it is good also as a form which provides the channel | path for supplying lubricating fluid inside the processing tool 10, and supplies lubricating fluid from a channel | path. A predetermined process or mechanism for suppressing adhesion of the lubricating liquid may be provided in a portion of the processing tool 10 that does not require lubrication.

  For supplying the lubricating liquid, a discharge device that discharges the liquid droplets of the lubricating liquid continuously or intermittently can be used. As such a discharge device, a device having a nozzle such as an electromagnetic valve method, a piezoelectric element actuator method, a centrifugal force method, or the like can be used. Alternatively, a discharge device including a mechanism for charging the discharged liquid droplets and a deflection electrode for determining the projection direction of the liquid droplets of the lubricating liquid can be used. As such an ejection device, for example, a piezo element actuator used for an inkjet head or the like can be used. By charging the droplet and determining the projection direction of the droplet with a deflection electrode or the like, a droplet having a predetermined size can be pinpointed to a predetermined position.

  The discharge device controls the discharge droplet diameter, discharge speed, and discharge range of the droplets discharged from the discharge device in accordance with the rotation speed of the processing tool 10, the shape of the blade 1, and the like. It is possible to control the diameter (droplet diameter) of a droplet to be deposited. For example, when the processing tool 10 rotates at a low speed, supply mechanisms 3a and 3b having, for example, electromagnetic valve type nozzles are suitable. When the electromagnetic valve type nozzle is used, the maximum discharge frequency of the discharged droplets can be set to about 1 kHz.

  When the processing tool 10 rotates at high speed, supply mechanisms 3a and 3b having a piezo element actuator type nozzle used for an ink jet head or the like are suitable. The nozzle of the piezo element actuator system has a maximum discharge droplet speed of about 10 m / s and a discharge droplet diameter of about several tens to several hundreds of μm. When a piezo element actuator type nozzle is used, the maximum ejection frequency of the ejected droplets can be about 1 to 50 kHz.

  The supply mechanisms 3a and 3b using the electromagnetic valve type nozzle or the piezo element actuator type nozzle can arrange the liquid droplets at a predetermined interval with respect to only a specific region of the blade 1. For this reason, unlike the conventional method in which mist droplets are ejected into the atmosphere, the droplets are not dispersed on the ejection surface. Further, by adjusting the angle and the droplet diameter according to the width of the blade 1 or the area of the processing-related area of the blade 1, the minimum lubricating liquid necessary for processing is also applied to the operating tool 10 in operation. Droplets can be arranged only where needed.

  For example, as shown in FIG. 3A, the droplets 41 adhering on the processing tool 10 can be pinpointed in a single layer along the blade width W of the blade 1. The droplets 41 arranged along the blade width W are connected to each other by surface tension or the like to form a film (lubricating liquid film). Further, as shown in FIG. 3B, the length of the film length L4 may be adjusted by overlapping the layers of the droplets 41. Further, as shown in FIG. 3C, the attachment position of the droplet 41 can be adjusted so that a part of the droplet 41 protrudes from the blade edge 11. The film length L3 to L5 (the distance from the blade edge 11 to the outermost layer of the droplet 41) of the lubricating liquid film 4 comprehensively includes various characteristics such as the rotational speed of the blade 1, the shape of the blade 1, and the blade width W. Set with consideration. The droplet diameter (droplet diameter) of the droplet 41 actually deposited near the blade edge 11 is, for example, about 10 μm to 2 mm, or about 0.5 to 1 mm.

  The attachment position of the droplet 41 can be controlled by the supply mechanisms 3a and 3b. For example, as shown in FIG. 4A, when the droplets 41 are arranged in a pinpoint manner with a film length L6 only in the vicinity of the cutting edge 11 (flank 12 and scooping surface 13), the surface tension and pressure of the droplets are increased. A plurality of droplets 41 adhering to the blade 1 are continuous due to an interaction such as an inertial force due to movement (rotation) of the tool 10 and a Counder effect, and at the same time, as shown in FIG. A lubricating liquid film 4 is formed. In particular, when a piezo element actuator type nozzle is used as the supply mechanism 3a, 3b, since the discharged liquid droplets are very small, one of the liquid droplets 41 protruding from the blade edge 11 can be controlled by appropriately controlling various conditions. Since the part rotates and adheres to the back side of the landing surface due to the Coanda effect at the time of landing, it is not released to the atmosphere. Moreover, since the dominant force of the surface tension is large in the micro droplet, the droplet 41 colliding with the processing tool 10 does not scatter around.

  In addition to the electromagnetic valve and the piezo element actuator described above, various other discharge devices may be used for selecting the supply mechanisms 3a and 3b. That is, in order to ensure the lubrication range necessary for the blade 1 and the necessary and sufficient film thickness of the droplets, the type of the workpiece 2 and the processing conditions are comprehensively considered, and the optimum is selected from various discharge devices. What is necessary is just to select supply mechanism 3a, 3b.

  The kind of the workpiece 2 is not particularly limited. For example, as the work material 2, in addition to metal materials, carbon fiber composite materials, ceramics, paper and films in the case of slitters, and other various non-metal materials such as wood in band saw processing are targeted. can do. In addition, volatile lubricants can be used as a lubricant for work tools that had to be processed without lubrication because the oil has not been allowed to adhere to the workpiece or the lubricant has not been released to the environment. It is possible to use the lubricating liquid adhesion method according to the present embodiment using high lubricating oil.

-Machining area-
With reference to FIG. 2, an example of the formation range (processing related region) of the lubricating liquid film 4 suitable for the lubricating liquid adhesion method for a processing tool according to the embodiment of the present invention will be described. For example, in the case of cutting, the cutting edge 11 at the tip of the processing tool 10 is brought into contact with the processing point 21 of the workpiece 2 and moved in the cutting direction (arrow direction in the figure).
At this time, the rake face 13 of the blade 1 which is a contact surface with the chip 5 of the workpiece 2, the flank face 12 of the blade which is a contact surface with the finish surface 22 of the workpiece 2, and the cutting edge 11 which is in contact with the machining point 21. Each produces a frictional force. For this reason, it is preferable to form a necessary and sufficient amount of the lubricating liquid film 4 on the cutting edge 11, the flank 12, and the rake face 13. However, since the cutting edge 11 is in direct contact with the machining point 21 of the workpiece 2 during cutting, in order to wet the cutting edge 11 in contact with the machining point 21 with lubricating oil, both the cutting edge 11 and the workpiece 2 are lubricated with lubricating oil. Was attached.

  In the method of attaching the lubricating liquid of the processing tool according to the embodiment, before the cutting edge 11 reaches the processing point 21, the liquid droplets of the lubricating liquid are arranged in a region related to the processing including the cutting edge 11, and limitedly. A lubricating liquid film 4 is formed. As a result, the lubricating liquid film 4 having a necessary thickness is always formed on the cutting edge 11 that has reached the processing point 21, so that a sufficient lubricating effect for cutting is exhibited. As a result, the wear of the blade 1 is also reduced.

  In the case of cutting, the cutting-related area of the blade 1 is the cutting edge 11 of the blade 1, the contact area R1 of the rake face 13 of the blade 1 with the chip 5 and the contact area R2 of the flank 12 of the blade 1 with the finish surface 22. Become. By limiting the formation range of the lubricating liquid film 4 to the processing-related area, the amount of the lubricating liquid used can be reduced. The film lengths L1 and L2, the film thickness T, and the film width (not shown) of the lubricating liquid film 4 are the rotational speed of the blade 1, the shape of the blade 1, the blade width W, the material of the workpiece 2, and the processing conditions. It is determined from the contact range with the workpiece 2 according to various characteristics such as formation conditions, and is controlled by the supply mechanisms 3a and 3b (see FIG. 2). For example, the film length L <b> 1 can be set to about 0.1 to 0.5 mm depending on the contact point with the finished surface 22. The film length L2 can be set to about 1 to 5 mm, for example, depending on the size of the chips 5.

  Although the embodiments of the present invention have been described as described above, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments and operational techniques will be apparent to those skilled in the art.

  In the above-described embodiment, the cutting process has been described as an example of the process. However, the process is not particularly limited as long as the process is an intermittent process in which the workpiece 2 intermittently contacts the processing tool 10. For example, it may be any one of cutting processing including milling processing and lathe processing, press processing, plastic processing such as forming processing and shearing processing, or a combination thereof. Further, as the property of the lubricating liquid, for example, the property of the lubricating liquid may be any of aqueous, oily, and emulsion types, and may be volatile or non-volatile.

  Examples of the present invention will be described below, but the present invention is not limited to the examples.

Two types of brass plates were used as the workpiece, the machining allowance of the workpiece was 0.5 mm in thickness, and the width was 10 mm, and the workpiece was side cut with a milling cutter. The cutter diameter of the milling cutter was 100φ, the number of blades was 6, the rotational speed was 955 min ⁻¹ (≈15.92 sec ⁻¹ ), and the cutting speed was 300 m / min (= 5 m / sec). The kinematic viscosity of the cutting oil is 19 mm ² / sec.

To form a lubricating oil film (lubricating liquid film) with a film thickness of T0.1 mm, a film length of L0.8 mm, and a film width of W10 mm on the rake face of the milling cutter blade, a piezo element actuator that discharges the lubricating liquid is located near the processing point. Was installed outside the cutter. Using a cutting oil with a kinematic viscosity of 19 mm ² / sec, adjust the nozzle position of the piezo element actuator, discharge 80 pL (picoliter) of oil droplets from the piezo element actuator, and the center of the oil droplet is 0.4 mm from the blade edge part. It was set to come to the position. When 17 such nozzles are arranged at intervals of 0.6 mm in the width direction, and the lubricating oil is applied at a discharge frequency of about 96 Hz and a discharge speed of about 5 m / sec, the rake face does not adhere to the work material. An almost desired lubricating oil film could be formed on the blade edge of.

Similarly, a lubricating oil film (lubricating liquid film) having a film thickness T of 0.1 mm, a film length L of 0.3 mm, and a film width W of 10 mm is formed on the flank face of the milling cutter blade. The piezo element actuator to be discharged was installed outside the cutter near the machining point. Using a cutting oil with a kinematic viscosity of 19 mm ² / sec, adjust the nozzle position of the piezo element actuator, discharge 11 pL (picoliter) of oil droplet from the piezo element actuator, and the center of the oil drop is 0.3 mm from the blade edge part. It was set to come to the position. When 40 such nozzles are arranged at intervals of 0.25 mm in the width direction, and lubricating oil is applied at a discharge frequency of about 96 Hz and a discharge speed of about 5 m / sec, the lubricating oil does not adhere to the workpiece and the work tool escapes. A substantially desired lubricating oil film could be formed on the edge of the surface.

  As described above, according to the method for attaching a lubricant to a working tool according to an embodiment of the present invention, it is possible to attach a minimum amount of lubricant necessary for cutting only to a necessary portion.

DESCRIPTION OF SYMBOLS 1 Blade 2 Work material 3a, 3b Supply mechanism 4 Lubricating liquid film 5 Chip 11 Cutting edge 12 Flank surface 13 Drake surface 11 Cutting edge 21 Processing point 22 Finish surface 41 Droplet 100 Processing device

Claims (16)

A method of attaching a lubricating liquid to a processing tool for intermittently processing a workpiece as viewed from the processing tool,
A process tool comprising: a step of restricting a lubricant to be applied to a processing-related region of the processing tool that contacts the workpiece before the processing tool contacts the workpiece. Lubricant adhesion method.   2. The lubrication of the processing tool according to claim 1, wherein the step of attaching the lubricating liquid to the processing-related region of the processing tool is a step of arranging droplets of the lubricating liquid in the processing-related region. Liquid adhesion method.   The step of adhering a lubricating liquid to a processing-related area of the processing tool is characterized in that the liquid droplet is attached to the processing-related area by an apparatus that continuously discharges the liquid droplets of the lubricating liquid. Item 3. A method for attaching a lubricant to a processing tool according to Item 1 or 2.   The step of adhering a lubricating liquid to a processing-related area of the processing tool charges the liquid droplet of the lubricating liquid, and causes the charged liquid droplet to adhere to the processing-related area. 4. The method for attaching a lubricating liquid to a processing tool according to any one of 3 above.   The method of attaching a lubricant to a processing tool according to claim 3 or 4, wherein the step of attaching the lubricating liquid to the processing-related region of the processing tool uses a piezo element actuator type supply mechanism.   The method of attaching a lubricant to a processing tool according to claim 3, wherein the step of attaching the lubricant to the processing-related area of the processing tool uses an electromagnetic valve type supply mechanism.   7. The step of adhering a lubricating liquid to a processing participation region of the processing tool causes the droplets of the lubricating liquid having a droplet diameter of 10 μm to 2 mm to adhere to the processing participation region. The method of attaching a lubricant to a processing tool according to any one of the above.   The processing-related area includes a cutting edge of the blade of the processing tool, a contact area with the chip of the workpiece on the rake face of the blade, and a contact area with the finish surface of the workpiece on the flank face of the blade The method for attaching a lubricating liquid to a processing tool according to claim 1, wherein the lubricating liquid is attached to the processing tool. A processing method for intermittently processing a workpiece as viewed from a processing tool,
A processing method comprising the step of selectively adhering a lubricating liquid to a processing participation area of the processing tool in contact with the workpiece before the processing tool comes into contact with the workpiece.   The processing method according to claim 9, wherein the step of attaching the lubricating liquid to the processing-related region of the processing tool is a step of arranging droplets of the lubricating liquid in the processing-related region.   The step of adhering the lubricating liquid to the processing-related area of the processing tool is characterized in that the droplets are arranged in the processing-related area using a device that continuously discharges the liquid droplets of the lubricating liquid. The processing method according to claim 9 or 10.   The step of adhering a lubricating liquid to a processing-related area of the processing tool charges the liquid droplets of the lubricating liquid, and arranges the charged liquid droplets in the processing-related area. 11. The processing method according to any one of 11 above.   The processing method according to claim 11 or 12, wherein the step of attaching the lubricating liquid to the processing-related area of the processing tool uses a piezo element actuator type supply mechanism.   12. The processing method according to claim 11, wherein the step of attaching the lubricating liquid to the processing-related area of the processing tool uses an electromagnetic valve type supply mechanism.   15. The step of adhering a lubricating liquid to a processing-related area of the processing tool causes the droplet of the lubricating liquid having a droplet diameter of 10 μm to 2 mm to adhere to the processing-related area. The processing method of any one of these.   The processing-related area includes a cutting edge of the blade of the processing tool, a contact area with the chip of the workpiece on the rake face of the blade, and a contact area with the finish surface of the workpiece on the flank face of the blade The processing method according to any one of claims 9 to 15, wherein: