JP2007260785A - Milling machine and milling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a milling machine and a milling method capable of securing lubrication and cooling property required for cutting without requiring a large quantity of machining oil when sucking cutting chips with a suction means in the milling method. <P>SOLUTION: The machining oil O is jetted by a jetting nozzle 43 so as to be supplied to a clearance region P, the machining oil O stays in the clearance region P without being sucked from the clearance region P, and the machining oil O is attached to a machining part of a workpiece W and an end mill tip 13a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a milling apparatus and a processing method thereof, and more particularly, to a milling apparatus and a processing method thereof in which processing oil supply performance is improved when milling is performed.

  Conventionally, when cutting such as milling is performed, it is known to reduce wear and heat generated during cutting by supplying processing oil to a processing portion of a workpiece by coating or spraying.

  For example, in the following Patent Document 1, a plurality of nozzles provided on a spindle head are used to inject machining oil from the tip (blade edge) of the cutting tool to the periphery, thereby improving lubricity and cooling during cutting and cutting. A cutting apparatus for preventing dust from being scattered is disclosed.

  Further, in Patent Document 2 below, a cutting oil flow path is formed in the cutting tool itself, and the cutting oil is directly supplied to the cutting edge of the outer end by utilizing the centrifugal force during the rotation of the cutting tool. A processing apparatus is disclosed.

  Furthermore, in Patent Document 3 below, processing oil injected from an oil supply nozzle outside (front) the cutting tool is once injected into the main supply hole of the cutting tool, and the processing oil is used by utilizing the centrifugal force of the cutting tool. Has been disclosed which supplies the main supply hole to the edge of the outer end.

Japanese Utility Model Publication No. 5-49238 Japanese Patent Laid-Open No. 10-6121 JP-A-2005-161500

  By the way, when the workpiece is milled, the end mill of the cutting tool is moved from one side of the workpiece to perform machining, and cutting waste is also discharged from the same direction. In this case, since it is difficult to discharge the cutting waste, the suction is usually performed by a suction machine or the like.

  However, when cutting chips are sucked and discharged in this way, the machining oil supplied to the workpiece is also sucked in at the same time, so the workpiece machining oil is sucked out before the important machining, and in fact the machining Milling is performed in the absence of oil, which causes a problem that lubricity and cooling required for milling are reduced.

  As a result, the tool life of the end mill is shortened, and the free-cutting property of the workpiece is also deteriorated, resulting in a problem that the quality of the workpiece (product) is deteriorated.

  In this regard, as in Patent Document 2 and Patent Document 3 described above, it is conceivable to form an oil passage in the end mill itself that is a cutting tool. However, in the case of milling, the processing position is the axial end of the end mill. Therefore, in an end mill that generates centrifugal force, the processing oil cannot be sufficiently supplied to a desired position.

  In addition, as in Patent Document 1, it is conceivable to inject a large amount of processing oil around the work by a plurality of nozzles. In such a case, a large amount of processing oil is required, and the processed work is applied to the work after processing. Due to the large amount of attached processing oil, it is necessary to clean the workpiece sufficiently after processing, which is not an efficient method for supplying processing oil.

  Accordingly, the present invention provides a milling apparatus and a machining method for milling a workpiece, and even if the cutting waste is sucked by the suction means, a large amount of processing oil is not required, and the necessary lubricity in the cutting process. Another object of the present invention is to provide a milling apparatus and a machining method thereof that can secure the cooling performance, extend the tool life of the end mill, and improve the quality of the workpiece.

  The milling apparatus according to the present invention is a milling apparatus that performs milling on a workpiece with an end mill, an end mill that rotates from before the machining, and a suction unit that sucks cutting waste discharged from the workpiece behind the end mill. And an injection means for supplying processing oil to a gap region between the workpiece and the front end of the end mill in front of the end mill.

According to the above configuration, a swirl flow is generated in the gap region in front of the end mill by the end mill rotating before processing. Even if the air is sucked by the suction means due to the influence of the spiral flow, the air in the gap region remains in the gap region as it is. Then, by spraying the processing oil into the gap area by the injection means, the atomized processing oil also stays in the gap area.
For this reason, even if the working oil is sucked by the sucking means, it can be retained at the work site of the workpiece with hardly being sucked by the sucking means.

  In addition, since the scale of the swirl flow generated in the gap region changes depending on the rotation speed, diameter, etc. of the end mill, the injection timing of the processing oil of the injection means, the injection period, and the like change depending on the scale of the swirl flow. desirable. It is considered that the injection timing is most preferable in the period immediately before the contact between the end mill and the workpiece, where the spiral flow is most likely to occur.

  In addition, the above “front of the end mill” means the workpiece side (processing side) when the end mill is the center, and the “behind the end mill” means the non-work side (retreat side) when the end mill is the center. Say.

In one embodiment of the present invention, the jetting means is provided on a holding member that fixes and holds a workpiece during processing.
According to the above configuration, since the distance between the injection unit and the workpiece at the time of injection is always constant by providing the injection unit on the holding member that fixes and holds the workpiece, the working oil is stably supplied between the workpiece and the end mill. Can be supplied to the gap region.
Therefore, a constant processing oil supply can be performed and a stable milling process can be performed.

In one embodiment of the present invention, a plurality of the ejecting means are provided so as to surround the gap region.
According to the above configuration, by providing the injection means so as to surround the gap area, the processing oil can be injected from the periphery of the gap area to the entire gap area.
For this reason, the processing oil can be uniformly supplied to the entire gap region, and the processing oil can be supplied without being biased.
Accordingly, it is possible to prevent deterioration of the free-cutting property of the end mill due to uneven processing oil, and stable milling can be performed.

In one embodiment of the present invention, the spraying means is set to operate until the end of cutting after the workpiece is fixedly held.
According to the above configuration, since the machining oil is injected only after the workpiece is fixedly held until the end of the cutting process, that is, the necessary period of the milling process, lubrication and cooling performance during machining is performed with only a small amount of the machining oil. Can be secured.
Therefore, the machining oil can be used efficiently, and the machining oil adhering to the workpiece is small, so that the workpiece can be easily cleaned after machining.

In one embodiment of the present invention, the lower surface of the workpiece is set to be machined.
According to the above configuration, when the working oil is supplied to the lower surface of the work, the working oil is easily dropped from the work by gravity.
However, by using the vortex flow to supply the processing oil, the processing can be performed without considering the dripping of the processing oil, and the milling can be surely performed.
Therefore, the milling of the lower surface of the workpiece, which has conventionally been difficult, can be performed stably.

In one embodiment of the present invention, the suction means is provided with a processing oil collecting section for collecting the sucked processing oil.
According to the above configuration, by providing the processing oil collection unit in the suction unit, it becomes possible to guide the processing oil collected by the processing oil collection unit to the injection unit again. Can be used as
Therefore, the processing oil can be used more effectively, and the production cost and waste can be reduced.

The milling method of the present invention is a milling method for performing a milling process on a workpiece with an end mill, wherein an air flow generating step for rotating the end mill to generate a spiral flow in a gap region between the front end of the end mill and the workpiece, and the air flow After the generating step, there is an injection step of supplying processing oil to the gap region by the injection means, and a processing step of processing the workpiece by causing the end mill to enter the gap region after the injection step.
According to the above method, after the air flow generation step, the injection step is set, and then the machining is performed by the end mill, so that the cutting oil is cut in the gap region using the spiral flow in the gap region. Processing can be performed.
For this reason, even if it attracts | sucks with a suction means, processing oil is hardly attracted | sucked to a suction means, can be stopped at a process site | part, and can perform stable milling process.
Therefore, in the milling processing method for milling the workpiece, even if the cutting waste is sucked by the suction means, a large amount of processing oil is not required, ensuring the lubricity and cooling necessary for cutting, The tool life of the end mill can be extended and the work quality can be improved.

According to the present invention, by utilizing the spiral flow generated in the rotating end mill, even when sucked by the suction means, the processing oil is hardly sucked by the suction means and can be retained at the processing site.
Therefore, in the milling apparatus and the machining method for milling a workpiece, even if the cutting waste is sucked by the suction means, the lubricity and cooling performance necessary for the cutting process can be obtained without requiring a large amount of machining oil. This ensures the end mill tool life and improves workpiece quality.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, the components of the embodiment will be described with reference to FIGS. FIG. 1 is an overall schematic diagram of a processing line including a milling apparatus of the present embodiment, FIG. 2 is a (a) perspective view, (b) bottom view, (c) cross-sectional view of a workpiece processed by the milling apparatus. 3 is an overall front view of the milling apparatus, FIG. 4 is a detailed cross-sectional view around the insertion hole provided in the lower base, FIG. 5 is a cross-sectional view taken along line AA in FIG. 4, and FIG. FIG.

  As shown in FIG. 1, the processing line including the milling apparatus 1 of the present embodiment includes a supply process 2 for supplying a workpiece W, a leveler process 3 for smoothing the surface of the workpiece W, and milling on the surface of the workpiece W. Milling step 4 for machining, first cleaning step 5 for cleaning the surface of the workpiece W after milling, pressing step 6 for cutting and pressing the workpiece W after cleaning, and a second cleaning step for sufficiently washing the workpiece W after pressing 7 and an inspection packing process 8 for inspecting and packing the workpiece (product) W after cleaning. In addition, the strip | belt-shaped body W etc. which are shown in this lower part show the processing state of the workpiece | work W when each process passed.

  As shown in FIG. 2, the workpiece W processed in this processing line is a metal band wound in a coil shape. For example, a plate thickness of 1.2 mm, a material width of 55 mm, and a material tab pitch copper (JIS standard: C1100) Made of copper material. In the milling apparatus 1 of the present embodiment, a circular spot facing process Q (drilling cutting process to the middle of the material) is performed on the lower surface Wa of the work W.

  In this counterbore machining Q, precise machining accuracy is required. For example, the workpiece W is machined to a machining value with a hole diameter D = 19.05 ± 0.015 mm and a depth H = 0.55 ± 0.05 mm. It is required to do.

  As shown in FIG. 3, the milling apparatus 1 of the present embodiment has a pair of slide rails 11, 11 extending up and down with respect to a base 10 to be installed, and is provided below the slide rails 11, 11. A spindle 12 is installed. An end mill 13 that is driven to rotate about the vertical axis is attached to the upper part of the spindle 12 so as to perform the counterbore machining Q described above. The end mill 13 to be mounted is set, for example, to have a material of carbide (carbide), two blades, and a diameter of 19.05 mm.

  Further, above the spindle 12, a lower base 14 slidable in the vertical direction with respect to the slide rails 11, 11 is rocked via coil springs 16, 16 extending in the vertical direction from a pedestal 15 that supports the spindle 12. It is installed freely. A die plate 17 is provided on the upper surface of the lower base 14 so as to contact the lower surface Wa of the workpiece.

  Above the die plate 17, the aforementioned workpiece W is installed so as to be fed horizontally from the left side to the right side of the drawing.

  An upper presser plate 19 that is slidable with respect to the slide rails 11, 11 is installed above the work W, and a stripper plate 20 that abuts the upper surface of the work W on the lower surface of the upper presser plate 19. Is installed.

  Further, a servo motor M is installed at the upper end of the slide rail 11 so that the upper presser plate 19 is moved up and down.

  Moreover, in this milling apparatus 1, the discharge mechanism 30 which discharges | emits the cutting waste produced by milling from the downward direction of the workpiece | work W is provided. Specifically, an insertion hole 31 extending in the vertical direction through which the end mill 13 is inserted is drilled in the lower base 14, and a waste receiving box 32 is installed below the insertion hole 31. The discharge mechanism 30 is configured by suction through the duct 33 by the suction machine 34 installed on the side.

  In the milling apparatus 1 of this embodiment, in order to supply the processing oil to the lower surface Wa of the workpiece, an injection unit 40 for injecting the processing oil to the lower base 14 is provided.

  Specifically, as shown in FIG. 4, the injection unit 40 includes an oil supply passage 41 extending in the horizontal direction inside the lower base 14, and an annular oil passage formed around the insertion hole 31 from the oil supply passage 41. 42 and jet nozzle portions 43, 43 extending obliquely upward from the annular oil passage 42 toward the central insertion hole 31.

  Among these, the injection nozzle portions 43 and 43 are formed so as to extend not only to the lower base 14 but also to the die plate 17 side, and the opening end 43 a is set above the insertion hole 31. In this way, by setting the opening end 43a of the injection nozzle portion at the upper part of the insertion hole 31, as will be described later, in the upper space of the insertion hole 31, that is, in the gap region P between the workpiece W and the end mill tip 13a. , Makes it easy to inject processing oil.

  In addition, as shown in FIG. 5, four injection nozzle portions 43 are provided at equal intervals (90 ° intervals) so as to surround the gap region P of the insertion hole 31. It is set so that the processing oil O can be uniformly injected into the region P.

  As shown in FIG. 3, the supply path 50 for supplying the processing oil to the injection unit 40 includes an oil tank 51 provided at a lower portion inside the suction machine 34, and the processing oil O from the oil tank 51 to the outside of the suction machine 34. A first oil passage 52 that guides the oil, a processing oil pump 53 connected to the first oil passage 52, and a second oil that guides the processing oil O from the processing oil pump 53 to the oil supply passage 41 of the injection unit 40. And is configured to supply the processing oil O from the oil tank 51 to the injection unit 40 by driving the processing oil pump 53.

  This supply path 50 is interlocked with the above-described discharge mechanism 30 that discharges the cutting waste, and the processing oil that is simultaneously sucked when the cutting waste is sucked by the suction machine 34 of the discharge mechanism 30 is again processed oil. It can be used as

That is, in the suction machine 34, when the cutting waste is sucked and discharged, the processing oil adhering to the workpiece is sucked at the same time, but the inside of the suction machine 34 is partitioned by a plurality of partition walls 35 and 35 as shown in FIG. Since the cutting waste filter 36 that forms the labyrinth and partitions the upper space and the lower space and the exhaust filter 37 that partitions the discharge port 34a and the inside are provided, the processing oil can be separated from the cutting waste and the like.
For this reason, once used processing oil O is stored in the oil tank 51, and the stored processing oil O can be used again as processing oil by sending it to the supply path 50 again.

Next, the process oil injection state of the injection unit 40 will be described with reference to FIG.
The processing oil O is supplied to the oil supply path 41 while being pressurized by the above-described processing oil pump 53 (not shown in FIG. 6). The pressurized processing oil O is sent from the oil supply passage 41 to the injection nozzle portions 43 and 43 via the annular oil passage 42.

  On the other hand, on the end mill 13 side, since the end mill 13 is always rotating, an air flow is generated around the end mill 13. In particular, a spiral flow is generated in the gap region P between the end mill tip 13 a and the workpiece W. Z is generated. Thus, since the swirl | vortex flow Z has generate | occur | produced, even if it attracts | sucks with the suction machine 34 (not shown in FIG. 6) from the end mill 13 lower part, the air of the clearance gap area P is not sucked out.

  By injecting and supplying the processing oil O to the gap area P by the injection nozzle portion 43, the processing oil O is not sucked out of the gap area P and remains in the gap area P, and the workpiece W is processed. It adheres to a site | part and the end mill front-end | tip 13a.

  Thereby, even if there is little quantity of processing oil, processing oil required for milling process can be ensured, and lubricity and cooling property can be ensured.

  Next, the machining operation (machining flow) of the milling machine of the present embodiment configured as described above will be described with reference to FIGS. 7 and 8 show a series of processing operations of the milling apparatus, where (a) is the initial process, (b) is the material fixing process, (c) is the machining oil injection process, and (d) is the cutting process. It is the figure which showed the process, (e) is an open process, (f) is the last process. FIG. 9 is a flowchart showing the processing flow.

The processing steps will be described along the flowchart of FIG.
In this milling process, first, in S1, the suction machine 34 (see FIG. 3) is operated, and the spindle 12 is driven to rotate the end mill 13. The suction machine 34 and the spindle 12 driven in S1 are always operating in the subsequent processing steps.

  Next, the workpiece | work W is supplied in the milling apparatus 1 by S2. This process operation is shown in the initial process of FIG. In this process, the upper presser plate 19 is positioned upward and the workpiece W is fed to the machining position.

  Next, in S3, the upper presser plate 19 is lowered and the work W is fixedly held. This process operation is the material fixing process of FIG. In this step, the servo motor M is driven to lower the upper presser plate 19 to push down the work W and fix it with the work W sandwiched between the stripper plate 20 and the die plate 17. Due to the fixed holding of the workpiece W, displacement of the workpiece W during milling is prevented.

  Next, injection of processing oil is started in S4. This processing operation is the processing oil injection step of FIG. In this step, as described above, in order to inject the processing oil into the gap region P below the workpiece W, the processing oil O pressurized by the processing oil pump 53 is supplied to the injection unit 40, and the injection nozzle unit 43. The processing oil is injected from (see FIG. 6). By this injection, the processing oil O is supplied to the gap region P between the workpiece W and the end mill 13.

  However, at the same time, the suction force by the suction device 34 (see FIG. 3) is applied, but since the swirl flow Z is generated in the gap region P as described above, the processing oil O is mostly applied to the suction device 34. It is not inhaled.

  Further, in S5, the upper presser plate 19 is lowered and the workpiece W is brought into contact with the end mill 13 to perform cutting. This processing operation is the cutting process of FIG. In this process, by further driving the servo motor M, the upper presser plate 19 is lowered and the lower base 14 is also lowered downward against the coil spring 16. Thereby, the workpiece W is brought into contact with the rotating end mill 13 and the workpiece W is milled.

  Next, in S6, the upper presser plate 19 is raised and the workpiece W is separated from the end mill 13 to finish cutting. At the same time, the injection of the processing oil O ends. This processing operation is the opening process of FIG. In this step, the upper presser plate 19 is lifted by rotating the servo motor M in the reverse direction, and the workpiece W is lifted by the urging force of the coil spring 16 to be separated from the end mill 13 and the cutting is finished. Almost simultaneously with the end of the cutting, the injection of the processing oil O is also ended. In this way, by stopping the injection supply at the same time as the end of cutting, it is possible to prevent the processing oil from being used more than necessary.

  Next, in S7, the upper presser plate 19 is further raised to the uppermost position. This processing operation is the final step in FIG. Through this process, one cycle of the milling process is completed.

  Further, in S8, it is determined whether or not the next cycle of machining is to be continued. If the machining is to be continued (YES), the process proceeds to S2 again, and machining processes after S2 are performed. On the other hand, if the machining is not continued (NO), the process proceeds to S9 as it is.

  In S <b> 9, the suction machine 34 that has been operating all the time is stopped, and the spindle 12 is also stopped, whereby the rotation of the end mill 13 is also stopped. As a result, the milling apparatus completely stops its operation and ends the milling process.

  By taking the processing steps as described above, in this embodiment, the processing oil is reliably supplied to the processing position of the workpiece W even if a small amount of processing oil is used, without using a large amount of processing oil. Thus, the circular counterbore processing Q can be applied to the lower surface Wa of the workpiece W stably.

Next, the effect of this embodiment is explained in full detail.
The milling apparatus according to the present invention includes an injection nozzle portion 43 that supplies the processing oil O to a gap region P between the workpiece W and the end mill tip 13 a at a position above the end mill 13.

Thus, since the processing oil O can be supplied to the gap region P where the air stays by the swirl flow Z by being injected from the lower side of the end mill 13 by the suction machine 34, the injected processing oil O is It stays in the gap area P.
For this reason, the processing oil O can be kept at the processing site of the workpiece W with almost no suction by the suction machine 34.

  Therefore, in the milling apparatus that mills the workpiece W, even if the cutting waste is sucked by the suction machine 34, the lubricity and cooling properties necessary for the cutting process are ensured without requiring a large amount of processing oil. Thus, the tool life of the end mill 13 can be extended and the quality of the workpiece can be improved.

  For example, the tool life of the end mill is 2000 shots according to the conventional method of applying the processing oil, whereas according to the method of the present embodiment, it can be extended to 10 to 30 times, 20000 to 60000 shots. Become.

  Further, regarding the quality of the workpiece, since the free-cutting property of the end mill is improved, the defect rate can be reduced.

  In addition, since the scale of the spiral flow Z generated in the gap region P changes depending on the rotation speed of the end mill 13, the end mill diameter, and the like, the injection timing and the injection period of the processing oil of the injection nozzle unit 43. It is desirable to change according to the scale. It is considered that the injection timing is most preferable in the period immediately before the contact between the end mill 13 and the workpiece W where the spiral flow Z is most likely to occur.

Moreover, in this embodiment, the injection nozzle part 43 is provided in the die plate 17 and the lower base 14 which hold | maintain the workpiece | work W at the time of a process.
As a result, the distance between the injection nozzle 43 and the workpiece W at the time of injection is always constant, so that the processing oil O can be stably supplied to the gap region P between the workpiece W and the end mill 13.
Therefore, a constant processing oil supply can be performed and a stable milling process can be performed.
In particular, in this embodiment, by setting the opening end 43a of the injection nozzle portion 43 to the upper portion of the insertion hole 31, the processing oil O can be injected more reliably into the gap region P. But the installation position of the opening end of an injection nozzle part is not limited to this position, For example, the upper surface of the die plate 17 and the inner wall surface of the insertion hole 31 of the lower base 14 may be sufficient.

In this embodiment, a plurality of injection nozzle portions 43 are provided so as to surround the gap region P.
Thereby, the processing oil can be sprayed from around the gap area P to the entire gap area P.
For this reason, the processing oil O can be uniformly supplied to the entire gap region P, and the processing oil O can be supplied without being biased.
Therefore, it is possible to prevent deterioration of the free-cutting property of the end mill 13 due to the bias of the processing oil O, and stable milling can be performed.

Further, in this embodiment, the injection nozzle portion 43 is set so as to operate from the time when the workpiece W is fixedly held (S4) until the end of cutting (S6).
As a result, since the machining oil is injected only after the workpiece W is fixed and held until the end of the cutting process, that is, only during the necessary period of milling, a small amount of machining oil ensures lubricity and cooling during machining. it can.
Therefore, the machining oil can be used efficiently, and the machining oil adhering to the workpiece W can be reduced, so that the workpiece can be easily cleaned after machining.

In this embodiment, the lower surface Wa of the workpiece W is set to be processed.
That is, by using the supply of the processing oil O using the spiral flow Z as in the present embodiment, the cutting can be performed without considering the dropping of the processing oil, and the milling can be surely performed. It can be done.
Therefore, the milling of the lower surface of the workpiece, which has conventionally been difficult, can be performed stably.

In this embodiment, an oil tank 51 for collecting the processing oil O sucked by the suction machine 34 is provided.
Thereby, it becomes possible to guide the processing oil O collected in the oil tank 51 to the injection nozzle portion 43 again, and the processing oil O once used can be used again as the processing oil O.
Therefore, the processing oil O can be used more effectively, and the production cost and waste can be reduced.

Further, in the milling method of this embodiment, the end mill 13 is rotated to generate a spiral flow Z in the gap region P between the end mill tip 13a and the workpiece W, and after the air flow generation step An injection step (S4) for supplying the processing oil O to the gap region P by the injection nozzle portion 43, and a processing step (S5) for processing the workpiece W by causing the end mill 13 to enter the gap region P after the injection step. It is a method provided with.
According to the above method, the swirl flow Z is utilized by setting the injection step (S4) after the air flow generation step (S1) and then setting the processing step (S5) for processing by the end mill 13. Thus, milling can be performed in a state where the processing oil O is retained in the gap region P.
For this reason, even if it attracts | sucks with the suction machine 43, the process oil O is hardly attracted | sucked by the suction machine 43, remains in the process site | part of the workpiece | work W, and can be milled.
Therefore, in the milling method of milling the workpiece W, even if the cutting scraps are sucked by the suction machine 43, a large amount of processing oil O is not required, and the necessary lubricity and cooling performance necessary for cutting are ensured. Thus, the tool life of the end mill 13 can be extended and the quality of the workpiece W can be improved.

  In the above embodiment, the description has been made on the assumption that the lower surface Wa of the workpiece W is milled. However, the present invention is not limited to this. Even when other surfaces such as side surfaces are milled, the present invention can be applied and the same effect can be obtained.

  In addition, according to the present invention, by appropriately adjusting the injection amount of the processing oil, the cleaning process in the subsequent process can be made unnecessary, so that the line equipment for the cleaning process can be reduced.

  Further, the processing oil injection structure is not limited to the injection nozzle portion as in the present embodiment, and may be any structure as long as the processing oil O can be appropriately supplied to the gap region P. May be.

  Moreover, in the end mill processing apparatus 1 of this embodiment, although the workpiece | work W is transferred to the end mill 13 side, conversely, the end mill may be transferred to the workpiece side.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
The suction means of the present invention corresponds to the suction machine 34 of the embodiment,
Hereinafter, similarly, the injection means corresponds to the injection nozzle portion 43,
The holding means corresponds to the lower base 14 and the die plate 17,
The processing oil collecting part corresponds to the oil tank 51,
The present invention is not limited to the above-described embodiments, but includes embodiments applied to all milling apparatuses and processing methods thereof.

The whole schematic diagram of the processing line containing the milling processing device of an embodiment. (A) perspective view, (b) plan view, (c) cross-sectional view of a workpiece. The whole front view of a milling apparatus. The detailed sectional view of the periphery of the insertion hole provided in the lower base. AA sectional view taken along line AA in FIG. Detailed sectional drawing explaining the injection state of process oil. The figure which showed the (a) initial stage process, (b) material fixing process, and (c) process oil injection process of a milling apparatus. The figure which showed the (d) cutting process, (e) opening process, and (f) last process of a milling apparatus. The flowchart which showed the processing flow of the milling apparatus.

Explanation of symbols

W ... Work 1 ... Milling device 13 ... End mill 14 ... Lower base 17 ... Die plate 31 ... Insertion hole 34 ... Suction machine 43 ... Injection nozzle part

Claims (7)

A milling machine that mills workpieces with an end mill.
An end mill that rotates before processing,
Suction means for sucking the cutting waste discharged from the work behind the end mill;
A milling apparatus comprising an injection means for supplying processing oil to a gap area between a workpiece and the front end of the end mill in front of the end mill. The milling processing apparatus according to claim 1, wherein the jetting unit is provided on a holding member that holds and holds the workpiece during processing. The milling apparatus according to claim 1 or 2, wherein a plurality of the injection means are provided so as to surround the gap area. The milling apparatus according to any one of claims 1 to 3, wherein the spraying means is set to operate until the end of cutting after the workpiece is fixedly held. The milling processing apparatus according to any one of claims 1 to 4, wherein the lower surface of the workpiece is set to be processed. The milling processing apparatus according to any one of claims 1 to 5, wherein the suction means is provided with a processing oil collecting section for collecting the sucked processing oil. A milling method for milling a workpiece with an end mill,
An air flow generation step for rotating the end mill to generate a swirl flow in the gap region between the front end of the end mill and the workpiece;
An injection step of supplying processing oil to the gap region by an injection means after the air flow generation step;
A milling method comprising: a machining step for machining a workpiece by causing an end mill to enter the gap region after the injection step.

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