JP2011093040A - Surface-cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface-cutting device capable of suppressing the adhesion of an excessive cutting fluid to a chip and a material to be cut, and locally feeding the minimum necessary cutting fluid to a required portion. <P>SOLUTION: The surface-cutting device includes a cutting tool 10 provided with a plurality of cutting blades 1 for surface-cutting the material 2 to be cut on a surface; a drive means for rotating and driving the cutting tool 10 on the surface of the material 2 to be cut; and feeding mechanisms 3a, 3b for locally depositing the cutting fluid on a contact area R<SB>2</SB>of a blade edge 11 of the cutting blade 1 with the material 2 to be cut in a rake face 13 of the cutting blade 1 and a contact area R<SB>1</SB>with the material 1 to be cut in a flank 12 of the cutting blade 1 before the cutting blade 1 of the cutting tool 10 is brought into contact with the material 2 to be cut. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a chamfering device for cutting the surface of a work material.

  In face cutting of a work material using a face cutting apparatus, a cutting fluid is generally used. The cutting fluid is supplied for the purpose of cooling the cutting edge of the cutting tool, lubricating action, chip discharge, cleaning, and the like. Conventionally, when chamfering is performed, a large amount of cutting fluid is supplied to the work material and cutting tool, but using a large amount of cutting fluid not only increases the cost of the cutting fluid. For example, the following problems also occur.

  When the chips generated by cutting are reused as a melting raw material, a steam explosion may occur by dissolving the wet chips. It will hurt the furnace material when it is dry. Therefore, it is necessary to dry and use the chips. However, in the case of air drying, a place and time for drying are required. Further, even if moisture is removed by drying, the sulfur component usually contained in the cutting fluid remains attached to the chips, so that when the chips are reused, the characteristics of the manufactured product may be impaired. Furthermore, since a large amount of cutting fluid adheres to the work material, a processing step and time for removing the cutting fluid from the work material are required.

  In a cemented carbide tool or the like generally used as a cutting tool, there is a concern that chipping of the cutting edge may occur due to thermal cycle fatigue due to repeated heating by cutting heat and cooling by supplying cutting fluid. On the other hand, due to the recent improvement in heat resistance of cutting tools, the cutting tool may not necessarily be cooled depending on the type of work material and cutting conditions. Further, depending on the cutting shape and cutting conditions, there is a case where chip discharge or cleaning action is not required as a function of the cutting fluid. That is, in recent years, only a high lubrication function is required for the cutting fluid, and there is a case where it is not necessary to cool the cutting tool by supplying a large amount of the cutting fluid.

  As methods for reducing the supply of cutting fluid, for example, dry processing that performs processing while supplying nitrogen, argon, oxygen, etc., or MQL (Minimal Quantity Lubrication) that sends cutting fluid droplets by air have been put into practical use. Has been. Further, Patent Document 1 discloses a method in which a cutting surface is covered with a cutting fluid filling container and cutting is performed while filling a minute space between the cutting filling vessel and the cutting surface with the cutting fluid.

JP 2008-859 A

  However, dry processing is limited to a very narrow range of application. In MQL processing, there is a concern 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 cutting fluids, but vegetable oil-derived synthetic esters are several times more expensive than general cutting fluids, leading to increased manufacturing costs. It is connected. Furthermore, in MQL processing, since the ratio of the cutting fluid that actually adheres to the processing point is small with respect to the amount of mist sprayed of the cutting fluid, there is no confirmation that a liquid film having a required thickness is always formed. In addition, since Patent Document 1 performs cutting while filling the work material and the vicinity of the processing point with the cutting fluid, the excess cutting fluid is likely to adhere to the chips and the work material.

  In view of the above-described problems, the present invention can suppress the adhesion of excess cutting fluid to chips and work material, and can form a minimum required cutting fluid liquid film locally at a necessary location. A cutting device is provided.

  In order to solve the above-mentioned problems, the present inventor does not perform cutting while supplying cutting fluid to both the work material and the machining point as in the past, but in advance to the part involved in the machining of the cutting blade. On the other hand, it was considered necessary to perform chamfering in such a manner that a liquid film of the cutting fluid was locally formed. From this point of view, as a result of reviewing the cutting fluid supply mechanism, when the cutting blade becomes non-cutting, with respect to the processing participation area (cutting blade, rake face and part of the flank) surrounding the cutting edge of the cutting blade It has been found that it is effective to use a supply mechanism that locally attaches a droplet of cutting fluid.

  The present invention completed on the basis of the above knowledge is, in one aspect, a cutting tool provided with a plurality of cutting blades for chamfering a work material, and a drive for driving the cutting tool on the work material. Before the cutting blade of the cutting tool comes into contact with the work material, the cutting edge of the cutting blade, the contact area with the work material at the rake face of the cutting blade, and the contact with the work material at the flank face of the cutting blade It is a chamfering device provided with the supply mechanism which makes a cutting fluid adhere locally to a field.

  In one embodiment, the chamfering apparatus according to the present invention has a mechanism in which the supply mechanism discharges a droplet of cutting fluid to at least one of the cutting edge of the cutting blade, the contact area of the rake face, and the contact area of the flank face. .

  In one embodiment, the chamfering apparatus according to the present invention has a mechanism in which the supply mechanism charges the cutting fluid droplets and discharges the charged droplets.

  In one embodiment, the chamfering apparatus according to the present invention has a piezo element actuator type supply mechanism.

  In one embodiment, the chamfering apparatus according to the present invention has an electromagnetic valve type supply mechanism.

  In one embodiment, the chamfering device according to the present invention has a supply mechanism in which a cutting fluid having a droplet diameter of 10 μm to 2 mm is applied to at least one of the cutting edge of the cutting blade, the contact area of the rake face, and the contact area of the flank face. It has a mechanism for landing drops.

  In one embodiment, the chamfering apparatus according to the present invention has a mechanism in which the supply mechanism is disposed inside the cutting tool.

  In one embodiment, the chamfering device according to the present invention is a cylindrical slab cutter in which the cutting tool has a central axis parallel to the width direction of the work material, and the driving means rotates the cutting tool on the work material. Drive.

  According to the present invention, since a liquid film having a necessary thickness is always formed on the cutting edge of the cutting blade that has reached the processing point, a sufficient lubricating effect is exhibited during cutting. Moreover, since there is little extra cutting fluid adhering directly to the chip or the work material, no pretreatment for removing the cutting fluid is required. Since the amount of cutting fluid discharged to the environment is reduced, the reduction of recycling costs is also expected. Since rapid cooling of the cutting blade is also suppressed, chipping of the cutting blade due to thermal cycle fatigue can be prevented, and the life of the cutting tool can be extended.

It is the schematic which shows an example of the chamfering apparatus which concerns on embodiment of this invention. It is a side view which illustrates the detail of the periphery structure of the slab cutter shown in FIG. FIG. 3A to FIG. 3C are schematic views showing an example of a method for arranging droplets. FIG. 4A and FIG. 4B are schematic views illustrating the formation range of the liquid film. It is a side view which represents typically the area | region where the supply of the cutting fluid in cutting is required.

  Embodiments of the present invention will be described with reference to the drawings. The embodiments described below exemplify methods for embodying the technical idea of the present invention, and the technical idea of the present invention is not limited to the following.

  When the work material 2 such as a metal plate is manufactured by hot rolling or the like, an oxide film or dirt is generated on both surfaces of the long work material 2. In order to scrape off the oxide film and dirt, for example, a double-sided surface cutting apparatus as shown in FIG.

  In the example shown in FIG. 1, the long work material 2 is run in the direction of the arrow in FIG. 1, and both side surfaces of the work material 2 are cut by the milling cutter 30. Then, the surface (upper surface) and the back surface (lower surface) of the work material 2 are cut by the slab cutter 10 provided on the lower surface side of the work material 2 and the slab cutter 10 provided on the upper surface side, respectively. The slab cutters 10 are respectively disposed to face the backup roll 16. Before and after the slab cutter 10, feed rolls 31 for continuously conveying the work material 2 are installed. Chips generated during chamfering are collected by suction and reused as a raw material for melting.

  FIG. 2 is an example of the peripheral structure of the slab cutter 10 for cutting the surface (upper surface) side of the work material 2. The work material 2 traveling from the upstream side to the downstream side (from the left side to the right side in FIG. 2) passes through the entrance guide roller 7 arranged in a pair of upper and lower sides, and then faces the slab cutter 10 and the backup roll. When passing between 16, the upper surface is chamfered. The work material 2 that has undergone chamfering passes through a delivery guide roller 8 that is arranged in a pair of upper and lower sides, and is sent to the next process.

Although there is no restriction | limiting in particular in the material of the workpiece 2, For example, copper, a copper alloy, a high nickel alloy, an aluminum alloy etc. are mentioned. In a typical example, the work material 2 is a thick plate of copper or copper alloy after hot rolling. Although there is no restriction | limiting in particular in the thickness and the width | variety of the workpiece 2 to be face-cut, In the case of the hot rolled sheet of a copper alloy, it is common that thickness is about 5-20 mm and width is 500-1000 mm. .
Chips 5 generated during chamfering are sent to a dust suction duct (not shown) connected to the upper side of the dust suction hood 6.

  The entry side guide roller 7 adjusts the pass line. The entry side guide roller 7 is rotatably supported by the entry side guide 17 via a shaft (not shown) extending in the width direction of the metal plate, and rotates in accordance with the travel of the work material 2 (columnar shape). ). The entrance-side guide roller 7 supported by one shaft can be formed into a short-axis columnar shape, and a plurality of the entrance-side guide rollers 7 can be arranged along the shaft axis at regular intervals. One long cylindrical column can be arranged. The material of the entry side guide roller 7 is not limited, but is generally austenitic stainless steel from the viewpoint of maintenance and cost, and the material of the entry side guide 17 is not limited but is generally die steel from the viewpoint of rigidity. is there.

  The slab cutter 10 has a plurality of cutting blades 1 on the surface and has a cylindrical shape (cylindrical shape) having a central axis substantially parallel to the width direction of the long work material 2. The slab cutter 10 is supported by a cutter stand (not shown), and continuously chamfers the work material 2 by being rotated at a predetermined rotational speed by a driving means (not shown) such as a motor. There is no restriction | limiting in particular in the rotation direction of the slab cutter 10. FIG. When the cutting blade 1 is rotated against the traveling direction of the work material 2, an upper cut is formed, and when the cutting blade 1 is rotated in the traveling direction of the work material 2, a down cut is performed. However, in the case of downcutting, an appropriate brake mechanism is added to feed rolls (not shown) arranged before and after the slab cutter 10 so that the work material 2 does not travel faster than necessary. In the case of down-cutting, the chips 5 generated at the time of cutting tend to be clogged between the exit guide 18 and the work material 2, and therefore, generally, the upper cut is preferred. FIG. 2 shows the case of chamfering by upper cutting.

  The plurality of cutting blades 1 attached to the surface of the slab cutter 10 are generally fixed to the entire surface of the slab cutter 10 in a spiral shape from the viewpoint of cutting efficiency and surface quality. The specific example of the arrangement | sequence of the cutting blade 1 is described in Unexamined-Japanese-Patent No. 7-276126, for example, The whole content can be used for this specification. Although the cutting blade 1 should just use the well-known arbitrary materials known to those skilled in the art, it is common to use the cemented carbide blade which has a tungsten carbide as a main component from a viewpoint of cutting performance and durability.

  The periphery of the slab cutter 10 is surrounded by a dust-absorbing hood 6 so that the generated chips 5 are sucked. The chips introduced into the dust suction hood 6 are supplied to a dust suction duct (not shown) connected above the dust suction hood 6. Thereafter, the chips 5 are subjected to removal of moisture, oil, and the like via a centrifuge, a dryer, and the like, and then the spatial density is increased by a press molding machine, and finally the process raw material is returned to the dissolved raw material. The material of the dust hood 6 is not limited, but is generally austenitic stainless steel from the viewpoint of maintenance.

  An exit guide 18 for stabilizing the pass line after cutting is adjacent to the downstream of the slab cutter 10. The exit guide 18 supports the exit guide roller 8. The work material 2 that travels after chamfering passes between the workpieces 2 while being sandwiched between the exit guide rollers 8. The material, shape and arrangement of the exit side guide roller 8 are the same as those of the entrance side guide roller 7.

  Supply mechanisms 3 a and 3 b for supplying a cutting fluid to the cutting blade 1 can be provided inside the slab cutter 10 and the exit guide 18 (upper surface side) adjacent to the slab cutter 10. Any one of the supply mechanisms 3a and 3b may be provided. The supply mechanism 3a is not necessarily provided inside the outlet guide 18 and is not limited to the configuration shown in FIG. That is, the supply mechanism 3a may be placed anywhere as long as a position where the cutting fluid droplet can be deposited at a predetermined angle with respect to the cutting blade 1 from the outside of the slab cutter 10 can be secured.

  As the supply mechanism 3b, for example, a supply port (not shown) may be provided in a groove between the cutting blades 1, and the cutting fluid may be directly supplied from the supply port. By providing the supply port in the groove between the cutting blade 1 and the cutting blade 1, the supply of the cutting fluid is less affected by the surrounding air resistance due to the rotation of the processing tool 10. The cutting fluid can be supplied with high accuracy over a range of. You may provide the channel | path (illustration omitted) for supplying cutting fluid into the inside of the slab cutter 10 as the supply mechanism 3b.

  As the supply mechanisms 3a and 3b, a discharge device that continuously discharges the droplets of the cutting fluid 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 droplets and a deflection electrode for determining the projection direction of the droplets of the cutting fluid can be used. As such an apparatus, 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 locally deposited at a predetermined position.

  The supply mechanisms 3a and 3b control the cutting blade 1 by controlling the discharge droplet diameter, discharge speed, and discharge range of the discharged droplets according to the rotational speed of the processing tool 10, the shape of the cutting blade 1, and the like. It is possible to control the diameter (droplet diameter) of the liquid droplets deposited on the processing-related area including the cutting edge. For example, when the rotation of the slab cutter 10 is low, 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 slab cutter 10 rotates at high speed, supply mechanisms 3a and 3b having a piezo element actuator type nozzle used for an inkjet 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 an electromagnetic valve type nozzle or a piezo element actuator type nozzle can arrange droplets at a predetermined interval only on a specific region of the cutting 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. In addition, by adjusting the angle, the droplet diameter, and the number of droplets according to the width of the cutting blade 1 or the area of the processing-related region of the cutting blade 1, it is also necessary for processing the working tool 10 during operation. It is possible to arrange a minimum amount of cutting fluid droplets only where necessary.

For example, as shown in FIG. 3A, the droplets 41 adhering to the cutting edge 11 of the cutting blade can be pinpointed in a single layer along the blade width W of the cutting edge 11. The droplets 41 arranged along the blade width W are connected to each other by surface tension or the like to form a film (liquid film). Further, as shown in FIG. 3B, the length of the film length L ₄ 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 L _{3 to} L ₅ of the liquid film 4 (distance from the blade edge 11 to the outermost layer of the droplet 41) depends on various characteristics such as the rotational speed of the cutting blade 1, the shape of the cutting blade 1, the blade width W, and the like. Set with comprehensive consideration. The droplet diameter (droplet diameter) of the droplet 41 that actually deposits 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 at pinpoints with a film length L6 with respect to the vicinity of the cutting edge 11 (the flank 12 or rake face 13 of the cutting blade 1 shown in FIG. 5), As shown in FIG. 3 (b), a plurality of droplets 41 attached to the cutting blade 1 are connected by the interaction such as the surface tension of the droplets, the inertial force due to the movement (rotation) of the processing tool 10, and the Counder effect. At the same time, the liquid film 4 is formed so as to surround the blade edge 11. In particular, when a piezo-actuator actuator type nozzle is used as the supply mechanism 3a, 3b, the discharged droplet is very small. Therefore, by appropriately controlling various conditions, one of the droplets 41 protruding from the blade edge 11 can be obtained. Since the portion can be attached to the back side of the landing surface by the Counder effect, the discharge of the droplet 41 to the atmosphere can be suppressed. In addition, since the dominant force of the surface tension is large in the micro droplet, the droplet 41 that collides with the slab cutter 10 is not easily scattered around.

  For the selection of the supply mechanisms 3a and 3b, various other discharge devices may be used in addition to the above-described electromagnetic valve and piezoelectric element actuator. In other words, in order to ensure the necessary lubrication range and the necessary and sufficient liquid film thickness for the cutting blade 1, the type of the work material 2 and the processing conditions are comprehensively considered, and it is optimal among various discharge devices. The appropriate supply mechanisms 3a and 3b may be selected. The timing at which the supply mechanisms 3a and 3b supply the droplets of the cutting fluid is during non-cutting, and is particularly preferably performed immediately before the cutting blade 1 comes into contact with the work material 2.

  FIG. 5 is an example of the formation range (working participation region) of the liquid film formed on the cutting blade 1 of the chamfering device according to the embodiment of the present invention. In the case of cutting, the cutting edge 1 of the cutting blade 1 is brought into contact with the processing point 21 of the workpiece 2 and moved in the cutting direction (arrow direction in the figure). Therefore, at the time of cutting, the rake face 13 of the cutting blade 1 which is a contact surface with the chip 5 of the work material 2, the flank face 12 of the blade which is a contact surface with the finished surface 22 of the work material 2, and a processing point 21. A frictional force is generated in each of the blade edges 11 in contact with. Therefore, it is preferable to form a necessary and sufficient amount of the 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 work material 2 during cutting, conventionally, both the cutting edge 11 and the work material 2 are used to wet the cutting edge 11 in contact with the machining point 21 with the cutting fluid. Cutting fluid was attached.

  On the other hand, in the chamfering device according to the embodiment, before the cutting edge 11 reaches the processing point 21, the liquid droplet 4 of the cutting fluid is arranged on the processing participation area including the cutting edge 11 to form the liquid film 4. To form. As a result, the liquid film 4 having a necessary thickness is always formed on the cutting edge 11 that has reached the machining point 21, so that a sufficient lubricating effect for cutting is exhibited. As a result, wear of the cutting blade 1 is also reduced.

In the case of cutting, the cutting-related area of the cutting blade 1 includes the cutting edge 11 of the cutting blade 1, the contact area R ₂ with the chip 5 on the rake face 13 of the cutting blade 1, and the finish surface 22 on the flank 12 of the cutting blade 1. the contact regions R _1. The film lengths L ₁ and L ₂ , the film thickness T, and the film width (not shown) of the liquid film 4 are the rotational speed of the cutting blade 1, the shape of the cutting blade 1, the blade width W, and the material of the work material 2. It is determined from the contact range with the work material 2 according to various characteristics such as machining conditions and forming conditions, and is controlled by the supply mechanisms 3a and 3b (see FIG. 2). For example, the film length L 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 L ₂ can be set to about 1 to 5 mm, for example, depending on the size of the chips 5.

(Other embodiments)
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, as shown in FIG. 2, a chamfering apparatus using a slab cutter 10 that cuts the upper surface of the work material 2 is described as an example. However, as a matter of course, a substantially similar mechanism can be adopted for a cutter that cuts the side surface and the lower surface of the work material 2. Moreover, as long as it cuts the workpiece 2 intermittently as viewed from the cutting blade 1, it is of course applicable to various cutting devices in addition to the chamfering device shown in FIG. In addition to the slab cutter 10, various tools used for milling and lathe processing can be included as “cutting tools” according to the embodiment of the present invention. Specifically, examples of the cutting tool according to the embodiment of the present invention include milling and end milling.

  In the following examples, cutting oil is used as an example of the cutting fluid. However, depending on the cutting conditions, cutting shape, etc., any of aqueous, oily, emulsion type cutting fluids may be used and volatilized. Or non-volatile. Moreover, in the above-mentioned embodiment, although the example where the entrance side guide 17, the dust suction hood 6, the exit side guide 18, and the dust suction hood 6 are respectively connected in a closed manner is shown, the dust suction hood 6 Any configuration can be used as long as it can be effectively removed from the vicinity of the processing point, and various other configurations can be employed. Thus, it goes without saying that the present invention includes various modes not explicitly described herein, and can be embodied by being modified without departing from the scope of the invention in the implementation stage.

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

Two kinds of brass plates were used as the work material, the cutting allowance of the work material was 0.5 mm in thickness, and the width was 10 mm, and the work 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.

A piezo element actuator that discharges oil droplets of cutting oil is used to form an oil film (liquid film) with a film thickness T of 0.1 μm, a film length of L 0.8 mm, and a film width W of 10 mm on the rake face of the milling cutter. Installed on the outside of the latest 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 droplet from the piezo element actuator, and the center of the oil drop is 0.4 mm away from the cutting edge 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 cutting 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 oil film could be formed on the blade edge.

Similarly, an oil film (liquid film) having a film thickness T of 0.1 mm, a film length of L 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 operated was placed outside the cutter near the machining point. Using a cutting fluid 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 away from the cutting edge It was set to come to the position. When 40 nozzles are arranged at intervals of 0.25 mm in the width direction and cutting oil is applied at a discharge frequency of about 96 Hz and a discharge speed of about 5 m / sec, the cutting tool escapes without attaching the cutting oil to the work material. An almost desired oil film could be formed on the cutting edge of the surface.

DESCRIPTION OF SYMBOLS 1 Cutting blade 2 Work material 3a, 3b Supply mechanism 4 Liquid film 5 Chip 6 Dust absorption hood 7 Entry side guide roller 8 Exit side guide roller 10 Slab cutter 11 Cutting edge 12 Flank surface 13 Rake surface 17 Entry side guide 18 Exit side guide 21 Machining point 22 Finish surface 30 Milling cutter 31 Feed roll 41 Droplet

Claims (8)

A cutting tool provided with a plurality of cutting blades for chamfering a work material on the surface;
Driving means for driving the cutting tool on the work material;
Before the cutting blade of the cutting tool comes into contact with the work material, the cutting edge of the cutting blade, the contact area with the work material on the rake face of the cutting blade, and the work on the flank of the cutting blade A chamfering device comprising: a supply mechanism that locally attaches a cutting fluid to a contact area with a material.   The said supply mechanism has a mechanism which discharges the droplet of the said cutting fluid toward at least any one of the blade edge of the said cutting blade, the said contact area of the said rake face, and the said contact area of the said flank. Chamfering equipment.   The chamfering device according to claim 1, wherein the supply mechanism includes a mechanism that charges the droplets of the cutting fluid and discharges the charged droplets.   The chamfering device according to any one of claims 1 to 3, wherein the supply mechanism includes a piezoelectric element actuator type supply mechanism.   The chamfering device according to claim 1, wherein the supply mechanism includes an electromagnetic valve type supply mechanism.   A mechanism in which the supply mechanism deposits the cutting fluid droplet having a droplet diameter of 10 μm to 2 mm on at least one of the cutting edge of the cutting blade, the contact area of the rake face, and the contact area of the flank face; The chamfering device according to any one of claims 1 to 5.   The chamfering device according to any one of claims 1 to 6, wherein the supply mechanism includes a mechanism disposed inside the cutting tool.   The cutting tool is a cylindrical slab cutter having a central axis parallel to the width direction of the work material, and the drive means rotates the cutting tool on the work material. The chamfering device according to claim 1.