JP6268764B2 - Vibration cutting apparatus and vibration cutting method - Google Patents

Description

  The present invention relates to a vibration cutting apparatus and a vibration cutting method for cutting a workpiece with a cutting tool by causing relative vibration between the cutting tool and the workpiece.

  For example, in Patent Document 1, in order to prevent scattering of the cutting fluid accompanying vibration cutting, the workpiece is placed in a container in which the cutting fluid is stored, and the vibration cutting point of the workpiece is positioned in the cutting fluid. A vibration cutting device that cuts in a state of being performed is described. Patent Document 2 describes a vibration cutting device that cools a cutting tool by spraying a mist-like cutting fluid in order to cool heat generated by vibration cutting. Patent Document 3 describes that the flow rate of the cutting fluid is 150 to 300 L / min.

JP 2002-66801 A JP 2006-326812 A JP-A-5-269645

  By the way, as the flow rate of the cutting fluid increases, the energy consumption of the supply device and the cost required for waste fluid treatment increase. Therefore, it is required to reduce the flow rate of the cutting fluid. However, it is necessary to sufficiently suppress heat generation by cutting with the cutting fluid.

  This invention is made | formed in view of such a situation, and it aims at providing the vibration cutting apparatus and vibration cutting method which can suppress the heat_generation | fever by cutting with a cutting fluid.

(Claim 1) Accordingly, a vibration cutting apparatus according to the present means supports a cylindrical workpiece, a rotary table that can rotate about the central axis of the cylindrical shape, and a table rotation that rotationally drives the rotary table. An apparatus, a tool support main body, and a columnar shape, provided in the tool support main body and arranged along the axis of the workpiece, the axis of the workpiece on the workpiece side And a cylindrical outer peripheral surface of the vibrating body that protrudes from the cylindrical end surface of the vibrating body and is provided at an edge of the cylindrical end surface of the vibrating body. a cutting tool which is provided so as to protrude from said at least said rotary table and said tool supporting body by relatively moving in the rotation axis direction of the object to be cut, moved to cut the object to be cut by the cutting tool Means and a nozzle for ejecting the cutting fluid toward the cutting tool, when in cutting the object to be cut by the cutting tool, the cylinder of said vibration member the vibration member relative to said tool supporting body A vibration device that vibrates the cutting tool by vibrating around an axis of the shape, and by vibrating the cutting tool by the vibration device, the cutting tool is not vibrated, The existence range of the cutting fluid discharged toward the cutting tool is determined from the position of the cutting tool, the cylindrical end surface of the vibrating body and the cylindrical outer peripheral surface of the vibrating body around the cutting tool. Magnify along.

Thus, in the vibration cutting, the existence range of the cutting fluid, the position of the cutting tool, by expanding along the outer peripheral surface of the cylindrical shape of the end surface and the vibration of the cylindrical shape of the vibrator around the cutting tool, The heat in the area where the cutting fluid is present can be reliably taken away. Therefore, a high cooling effect can be exhibited. As a result, by reducing the flow rate of the discharged cutting fluid, the energy consumption of the supply device and the cost for waste liquid treatment can be reduced.

Below, the suitable aspect of the vibration cutting apparatus which concerns on this means is demonstrated.
(Claim 2 ) Preferably, the vibration exciter vibrates the cutting tool in a tangential direction of the workpiece at a cutting point of the workpiece.
(Claim 3 ) Preferably, the flow rate of the cutting fluid discharged from the nozzle is 0.3 to 2.2 L / min, and the flow velocity of the cutting fluid discharged from the nozzle is 0.7 m / s. -5.2 m / s. When the flow rate and flow rate of the cutting fluid are within the above ranges, the cooling effect by the cutting fluid can be exhibited.

(Claim 4 ) Preferably, the maximum moving speed of the cutting tool by the vibration exciter is greater than 92 m / min. When the maximum vibration speed is in the range, the cooling effect by the cutting fluid can be surely exhibited.

(Claim 5 ) Preferably, the vibration device has an amplitude of vibration greater than 18 μm when the vibration frequency is 27 kHz or more. Thereby, the cooling effect by cutting fluid can be exhibited reliably.
(Claim 6 ) Preferably, the vibration exciter has an amplitude of vibration greater than 25 μm when the vibration frequency is 20 kHz or more. Also in this case, the cooling effect by the cutting fluid can be surely exhibited.

(Claim 7 ) Preferably, the maximum moving speed of the cutting tool by the vibration exciter is larger than the peripheral speed of the cutting point of the workpiece by the rotation of the workpiece. Thereby, during cutting, the state in which the cutting tool is in contact with the workpiece and the state of being separated are alternately repeated. As a result, a higher cooling effect can be exhibited.

(Claim 8 ) Further, the vibration cutting method according to the present means includes a rotary table that supports a cylindrical workpiece and is rotatable about a central axis of the cylindrical shape, and a table rotation that rotationally drives the rotary table. An apparatus, a tool support main body, and a columnar shape, provided in the tool support main body and arranged along the axis of the workpiece, the axis of the workpiece on the workpiece side And a cylindrical outer peripheral surface of the vibrating body that protrudes from the cylindrical end surface of the vibrating body and is provided at an edge of the cylindrical end surface of the vibrating body. A cutting tool provided so as to project from the workpiece, and a movement for cutting the workpiece by the cutting tool by relatively moving the rotary table and the tool support body at least in the rotation axis direction of the workpiece. Means, a nozzle that discharges a cutting fluid toward the cutting tool, and when the workpiece is being cut by the cutting tool, the vibrator is connected to the column of the vibrator with respect to the tool support body. And applying a vibration cutting device that vibrates the cutting tool by vibrating around a shape axis , and does not vibrate the cutting tool by vibrating the cutting tool by the vibration device. Compared to the case, the existence range of the cutting fluid discharged toward the cutting tool is changed from the position of the cutting tool to the cylindrical end face of the vibrating body and the vibration body around the cutting tool . It expands along the cylindrical outer peripheral surface .
Thereby, there exists an effect similar to the vibration cutting apparatus which concerns on the said means. Moreover, the suitable aspect in the vibration cutting apparatus which concerns on the said means is applicable similarly to the vibration cutting method which concerns on this means.

It is a lineblock diagram of a vibration cutting device concerning an embodiment of the present invention. It is a figure explaining relative operation | movement of a to-be-cut object and a cutting tool in a cutting point. When the flow rate of the grinding fluid is changed, the temperature inside the tool is shown. In the figure, (a) shows the case where there is no tool vibration at a cutting speed Vc (peripheral speed of the cutting point by C-axis rotation) of 250 m / min, and (b) shows the tool vibration at a cutting speed Vc of 250 m / min. (C) is a case where the cutting speed Vc is 25 m / min and no tool vibration is present, and (d) is a case where the cutting speed Vc is 25 m / min and tool vibration is present. It is a photograph which shows the state of the cutting fluid discharged from the nozzle when the cutting tool is not vibrating. It is a photograph which shows the state of the cutting fluid discharged from the nozzle when the cutting tool vibrates with an amplitude of vibration of 10 [μm]. It is a photograph which shows the state of the cutting fluid discharged from the nozzle when the cutting tool vibrates with the vibration amplitude of 15 [μm]. It is a photograph which shows the state of the cutting fluid discharged from the nozzle when the cutting tool vibrates with the vibration amplitude of 20 [μm]. It is a photograph which shows the state of the cutting fluid discharged from the nozzle when the cutting tool vibrates with an amplitude of vibration of 25 [μm]. It is a photograph which shows the state of the cutting fluid discharged from the nozzle when the cutting tool vibrates with the vibration amplitude of 30 [μm]. The temperature rise inside the tool with respect to the amplitude of vibration is shown.

(Mechanical configuration of vibration cutting equipment)
The configuration of the vibration cutting device 1 will be described with reference to FIG. As the vibration cutting apparatus 1, for example, a machine tool such as a 4-axis machining center or a lathe can be used. The vibration cutting apparatus 1 includes at least two orthogonal axes (X axis and Z axis) orthogonal to each other and one rotation axis (C axis). The vibration cutting device 1 includes a bed (not shown), a rotating table 11 , a table rotating device 12 , a tool support body 21, a vibrating body 22 , a cutting tool 23, and an X-axis drive device 24 (moving means). And a Z-axis drive device 25 (moving means) , a vibration device 26 , a nozzle 31, and a cutting fluid supply device 32.

  The bed is placed on the floor. A turntable 11 is supported on the bed so as to be rotatable in the C-axis rotation direction (around the Z-axis). A workpiece W is fixed on the rotary table 11. Here, the workpiece W has, for example, a cylindrical shape, and is arranged on the rotary table 11 so that the center axis of the workpiece W coincides with the rotation center of the C axis.

  The table rotating device 12 drives the rotation of the rotating table 11. In other words, the workpiece W is rotated in the C-axis rotation direction by driving the table rotating device 12. The table rotating device 12 is configured by a motor or the like.

  The tool support body 21 is supported so as to be movable with respect to the bed in two orthogonal directions (X-axis direction and Z-axis direction). Here, the X axis is the radial direction of the central axis of the workpiece W, and the Z axis is the direction of the central axis of the workpiece W. The X-axis drive device 24 and the Z-axis drive device 25 move the tool support body 21 with respect to the bed in the X-axis direction and the Z-axis direction. The X-axis drive device 24 and the Z-axis drive device 25 are configured by motors 24a and 25a and ball screws 24b and 25b, respectively.

  The vibrating body 22 is provided on the tool support main body 21 and is provided so as to be able to vibrate around the X axis (A axis rotation direction). The vibrating body 22 is vibrated by a vibration device 26 provided in the tool support body 21. The vibration device 26 is configured by a vibration element such as a piezoelectric element. A cutting tool 23 is provided on the edge of the end face of the vibrating body 22. The cutting tool 23 is, for example, a cutting tip.

  The nozzle 31 is provided in the tool support body 21 and discharges a water-soluble cutting fluid to the cutting point of the workpiece W by the cutting tool 23. By discharging the cutting fluid, the heat of the cutting point is absorbed, thereby suppressing the occurrence of cutting burn of the workpiece W. Further, the cutting fluid is discharged, which contributes to suppressing the temperature rise of the cutting tool 23. As a result, the life of the cutting tool 23 can be improved.

  The cutting fluid discharged from the nozzle 31 is supplied by a cutting fluid supply device 32. The cutting fluid supply device 32 can adjust the flow rate Q of the cutting fluid supplied to the nozzle 31. The cutting fluid is discharged from the nozzle 31 and then collected in a tank (not shown). After adjusting the temperature, the cutting fluid is supplied to the nozzle 31 again by a pump constituting the cutting fluid supply device 32. The cutting fluid supply device 32 sets the flow rate Q of the cutting fluid discharged from the nozzle 31 in the range of 0.3 to 2.2 [L / min], and the flow velocity V of the cutting fluid is 0.7 to 5. The range is 2 [m / s].

(Operation of vibration cutting equipment)
Next, operation | movement of the vibration cutting apparatus 1 mentioned above is demonstrated with reference to FIG. 1 and FIG. In FIG. 1, the workpiece W is cut by the cutting tool 23 by moving the cutting tool 23 in the Z-axis direction while rotating the workpiece W in the C-axis rotation direction. Here, the peripheral speed in the C-axis rotation direction of the workpiece W is the speed in the cutting direction (cutting speed), and the speed in the Z-axis direction of the cutting tool 23 is the speed in the feed direction (feed speed). The cutting amount can be changed by moving the cutting tool 23 in the X-axis direction. That is, the X-axis direction is the cutting direction.

  Then, by driving the vibration device 26, the vibrating body 22 and the cutting tool 23 vibrate in the A-axis rotation direction with respect to the tool support main body 21. That is, the cutting tool 23 vibrates in the A-axis rotation direction while moving straight (feeding) in the Z-axis direction. Therefore, in the operation of the cutting tool 23 with respect to the workpiece W, vibration in the A-axis rotation direction is superimposed in addition to the operation in the cutting direction (C-axis direction) and the operation in the feed direction (Z-axis direction).

  The vibrating body 22 by the vibrating device 26 vibrates in the A-axis rotation direction, and the rotary table 11 moves straight in the cutting direction in the C-axis rotation direction. Therefore, as shown in FIG. 2, at the cutting point, the cutting tool 23 moves with respect to the work W at a cutting speed Vc in the cutting direction and reciprocates at a speed Vv in a direction parallel to the cutting direction ( Vibrate.

  That is, when the vibration direction of the cutting tool 23 is the same as the cutting direction (left direction in FIG. 2) at the cutting point, the moving speed of the cutting tool 23 in the relative cutting direction is greater than the cutting speed Vc. Become fast. On the other hand, when the vibration direction of the cutting tool 23 is opposite to the cutting direction (the right direction in FIG. 2), the moving speed of the cutting tool 23 in the relative cutting direction is lower than the cutting speed Vc.

  In this case, depending on both speeds, the cutting tool 23 moves in the cutting direction relative to the workpiece W, moves in the direction opposite to the cutting direction, and stops in the cutting direction. Either. Here, cutting the workpiece W with the cutting tool 23 while the cutting tool 23 performs an operation in which vibration is superimposed on movement in the cutting direction with respect to the workpiece W is referred to as vibration cutting. .

(Cut fluid discharged from nozzle and cutting tool temperature)
As described above, the cutting fluid is discharged from the nozzle 31 toward the cutting point. The cutting tool 23 is cooled by the cutting fluid. Therefore, when the flow rate Q of the cutting fluid discharged from the nozzle 31 is changed in order to grasp the relationship between the flow rate Q of the grinding fluid and the temperature of the cutting tool 23, the rising temperature ΔT [° C. inside the cutting tool 23 is changed. ] Was measured.

  Here, the measurement conditions are as follows. The workpiece W uses Inconel 718, which is a nickel-based heat-resistant alloy, and the cutting speed Vc (peripheral speed of the cutting point of the workpiece W) is 25 [m / min] and 250 [m / min]. The vibration frequency f of the tool 23 is 27 [kHz], the vibration amplitude A1 of the cutting tool 23 is 30 [μm], and the flow rate Q of the cutting fluid discharged from the nozzle 31 is 0, 0.3, 2 .2 and 8.2 [L / min], and the flow velocity V of the cutting fluid is 0.7 to 5.2 [m / s]. The temperature inside the cutting tool 23 is measured by a thermocouple inserted inside the cutting tool 23.

  The measurement results are as shown in FIG. In FIG. 3, (a) shows a case where the cutting speed Vc (peripheral speed of the cutting point around the C axis) is 250 [m / min] and there is no vibration of the cutting tool 23, and (b) shows the cutting speed. The case where there is vibration of the cutting tool 23 when Vc is 250 [m / min], and (c) is the case where there is no vibration of the cutting tool 23 when the cutting speed Vc is 25 [m / min]. d) is a case where the cutting tool 23 vibrates at a cutting speed Vc of 25 [m / min].

  As shown in FIGS. 3 (a) and 3 (c), when no vibration is applied, the rising temperature ΔT increases as the flow rate Q of the cutting fluid is increased from 0.3 to 8.2 [L / min]. It is getting smaller gradually. In contrast, as shown in FIGS. 3B and 3D, when vibration is applied, the flow rate Q of the cutting fluid is 8.2 [L / min] at 0.3 [L / min]. The temperature rise ΔT is comparable. And at least in the range of 0.3 to 2.2 [L / min], the flow rate Q is a temperature rise ΔT that is about the same as 8.2 [L / min].

  Thus, in vibration cutting, even when the flow rate Q of the cutting fluid is in the range of 0.3 to 2.2 [L / min], the flow rate Q of the cutting fluid is 8.2 [L / min]. It can be seen that the same cooling effect can be exhibited. In both cases where the cutting speed Vc is set to 250 [m / min] and 25 [m / min], a very high cooling effect can be obtained by vibrating the cutting tool 23. it can.

  Further, comparing (a), (b), and (c) and (d) in FIG. 3, the rising temperature ΔT is lower at the cutting speed Vc of 25 [m / min] than at 250 [m / min]. . Here, the cutting speed Vc of 25 [m / min] is lower than the maximum vibration speed Vv (max) of the cutting tool 23, and the cutting speed Vc of 250 [m / min] is the maximum vibration speed Vv ( max). In other words, when the cutting speed Vc is 25 [m / min], the cutting tool 23 and the workpiece W are instantaneously separated from each other, whereas the cutting speed Vc is 250 [m / min]. In this case, the cutting tool 23 and the workpiece W are always in contact with each other.

  Here, a method of calculating the maximum vibration speed Vv (max) will be described. The displacement Xv (hereinafter referred to as “vibration displacement”) when the cutting tool 23 vibrates is expressed as in Expression (1).

  By differentiating the vibration displacement Xv of Expression (1) once with respect to time, the vibration speed Vv of the cutting tool 23 is expressed as Expression (2). The maximum vibration speed Vv (max) is expressed as in Expression (3). According to the above conditions, the vibration amplitude A1 is 30 μm, and the vibration frequency f is 27 kHz. Accordingly, the maximum vibration speed Vv (max) is 153 [m / min].

  As described above, the maximum vibration speed Vv (max) is set to be higher than the cutting speed Vc, so that the state in which the cutting tool 23 is in contact with the workpiece W and the state in which the cutting tool 23 is in contact are alternated during cutting. Repeat. As a result, it is considered that a higher cooling effect can be exhibited. However, as shown in FIG. 3 (b), vibration cutting is performed even when the cutting speed Vc is 250 [m / min] and the cutting tool 23 and the workpiece W are always in contact with each other. Thus, even when the flow rate Q of the cutting fluid is in the range of 0.3 to 2.2 [L / min], a high cooling effect can be obtained.

(State of cutting fluid in vibration cutting)
As shown in FIG. 3, it was found that by performing vibration cutting, a high cooling effect is exhibited even with a small amount of cutting fluid. Therefore, as a result of examining the reason for this phenomenon, it was found that the cutting liquid spreads around the cutting tool 23 by discharging the cutting liquid onto the vibrating cutting tool 23.

That is, in the state where the cutting tool 23 is vibrated, by discharging the cutting fluid from the nozzle 31 toward the cutting point, the cutting fluid hits the cylindrical end surface of the vibrating body 26, and the cutting fluid causes the cutting of the vibrating body 26. The cylindrical end face is wetted and the vibrating body 26 is vibrated along the end face, so that the cutting fluid spreads along the end face. As a result, the state in which the cutting fluid spreads around the cutting point is maintained. Thus, it is considered that the rising temperature ΔT of the cutting tool 23 is lowered even when a small amount of the cutting fluid is spread due to the spreading of the cutting fluid.

  Here, in the case where the amplitude A1 of the vibration of the cutting tool 23 is changed, an experiment was conducted on how the cutting fluid exists around the cutting tool 23. The vibration amplitude A1 is set to 0, 10 μm, 15 μm, 20 μm, 25 μm, and 30 μm, and these are shown in FIGS. 4A to 4F.

4A to 4F, a cutting tool 23 is provided below the left end of the cylindrical member vibrating body 22, and a cutting fluid is discharged from the nozzle 31 toward the cutting tool 23. Compared to FIGS. 4A to 4C, it can be seen that the cutting fluid spreads around the cutting tool 23 in FIGS. 4D to 4F . In FIG. 4D to FIG. 4F, the cutting fluid is present in the form of bubbles and envelops the cutting tool 23. That is, it was found that when the vibration frequency f is 27 kHz, the cutting fluid spreads more along the end face when the vibration amplitude A1 of the cutting tool 23 is 20 μm or more .

  Therefore, even if the flow rate Q of the discharged cutting fluid is reduced, a high cooling effect can be exhibited. As a result, since the flow rate Q of the cutting fluid can be reduced, the energy consumption by the cutting fluid supply device 32 and the cost for waste fluid treatment can be reduced.

(Rising temperature of the cutting tool when the amplitude of vibration is changed)
In order to clarify the relationship between the vibration of the vibrating body 26 and the cooling effect, the vibration frequency f of the cutting tool 23 is 27 kHz, and the vibration amplitude A1 is 0, 10, 16, 18, 20, 25, 30 [μm]. An experiment was conducted to measure the rising temperature ΔT inside the cutting tool 23 when changed to.

  The measurement results are as shown in FIG. As shown in FIG. 5, the rising temperature ΔT was around 70 [° C.] when the vibration amplitude A1 was 0 to 18 [μm]. On the other hand, when the vibration amplitude A1 is 20 to 30 [μm], the rising temperature ΔT is around 50 [° C.]. Thus, it has been found that increasing the vibration amplitude A1 to more than 18 [μm] sharply decreases the temperature rise ΔT inside the cutting tool 23.

Here, from the above equation (3), when the vibration frequency f is 27 kHz and the vibration amplitude A1 is 18 [μm], the maximum vibration speed Vv (max) is 92 [m / min]. That is, from FIG. 4A to FIG. 4F and FIG. 5 , cutting is performed in a state where the cylindrical end surface of the vibrating body 26 is wet with the cutting fluid so that the maximum vibration speed Vv (max) is greater than 92 [m / min]. By oscillating the tool 23, it was found that the cutting fluid spreads along the end face, and thereby the cooling effect of the cutting tool 23 was rapidly increased.

  Here, in the above, the case where the vibration frequency f is 27 kHz was examined. Even when the vibration frequency f is changed, if the maximum vibration speed Vv (max) is larger than 92 [m / min], it is considered that the same cooling effect is exhibited. Therefore, the maximum vibration speed Vv (max) was calculated when the vibration frequency f and the vibration amplitude A1 were changed.

  Tables 1 to 4 show cases where the vibration amplitude A1 is 10, 15, 16, 18, 20, 25, and 30 [μm] and the vibration frequency f is 20, 25, 27, and 30 [kHz], respectively. Yes.

  From Table 1, when the vibration frequency f is 20 [kHz], the vibration amplitude A1 should be larger than 25 [μm] in the range where the maximum vibration speed Vv (max) is larger than 92 [m / min]. . According to Table 2, when the vibration frequency f is 25 [kHz], the vibration amplitude A1 may be larger than 20 [μm] in the range where the maximum vibration speed Vv (max) is larger than 92 [m / min]. .

  According to Table 3, when the vibration frequency f is 27 [kHz], the vibration amplitude A1 may be larger than 18 [μm] in the range where the maximum vibration speed Vv (max) is larger than 92 [m / min]. . From Table 4, when the vibration frequency f is 20 [kHz], the vibration amplitude A1 may be larger than 18 [μm] in the range where the maximum vibration speed Vv (max) is larger than 92 [m / min]. .

  That is, by satisfying the above-described vibration amplitude A1 and vibration frequency f, the cutting fluid aggregates and convects in the cutting tool 23, and the cooling to the workpiece W at the cutting tool 23 and the cutting point is high. Demonstrate the effect.

  By the way, in the said experiment, the flow velocity V of the cutting fluid discharged from the nozzle 31 was 0.7-5.2 [m / s]. This is because when the flow rate of the cutting fluid is made higher than 5.2 [m / s] or made lower than 0.7 [m / s], the coagulation effect of the cutting fluid is reduced.

  In the above, the cutting fluid discharged from the nozzle 31 is a water-soluble cutting fluid. However, the cutting fluid is an oil-based cutting fluid, and the flow rate Q is set to 0.3 to 2.2 [L / min]. The effect of.

1: vibration cutting device, 11: rotating table , 12: table rotating device , 22: vibrating body , 23: cutting tool, 26: vibration device , 31: nozzle, 32: cutting fluid supply device, A1: vibration amplitude, f : Vibration frequency, V: Flow velocity, Q: Flow rate, Vc: Cutting speed, Vv (max): Maximum vibration speed, W: Workpiece

Claims (8)

A rotary table that supports a cylindrical workpiece and is rotatable about the cylindrical central axis;
A table rotating device for rotating the rotating table;
A tool support body;
A vibrating body that is formed in a cylindrical shape, is a lump disposed on the tool support body, and is disposed along the axis of the workpiece, and has an end surface along the axis of the workpiece on the workpiece side When,
A cutting tool provided at an edge of the columnar end surface of the vibrating body and protruding from the columnar end surface of the vibrating body and protruding from the columnar outer peripheral surface of the vibrating body When,
Moving means for cutting the workpiece by the cutting tool by relatively moving the rotary table and the tool support body at least in the direction of the rotation axis of the workpiece;
A nozzle for discharging a cutting fluid toward the cutting tool;
When the workpiece is being cut by the cutting tool, the cutting tool is vibrated by vibrating the vibrating body around the cylindrical axis of the vibrating body with respect to the tool support body. A vibration device;
With
Compared with the case where the cutting tool is not vibrated by vibrating the cutting tool by the vibration device, the existence range of the cutting fluid discharged toward the cutting tool is changed from the position of the cutting tool. It said end surface and the said cylindrical shape of the vibration body at the periphery of the cutting tool along the outer peripheral surface of the cylindrical shape of the vibrating body is enlarged, vibration cutting apparatus. The vibration cutting device according to claim 1 , wherein the vibration device vibrates the cutting tool in a tangential direction of the workpiece at a cutting point of the workpiece. The flow rate of the cutting fluid discharged from the nozzle is 0.3 to 2.2 L / min,
3. The vibration cutting device according to claim 1, wherein a flow rate of the cutting fluid discharged from the nozzle is 0.7 m / s to 5.2 m / s. The maximum moving speed of the cutting tool according vibrating device is greater than 92m / min, vibration cutting apparatus of any one of claims 1-3. The vibration cutting device according to claim 4 , wherein the vibration device has an amplitude of vibration greater than 18 μm at a vibration frequency of 27 kHz or more. The vibration cutting device according to claim 4 , wherein the vibration device has an amplitude of vibration greater than 25 μm when the vibration frequency is 20 kHz or more. The vibration cutting device according to any one of claims 1 to 6 , wherein a maximum moving speed of the cutting tool by the vibration device is larger than a peripheral speed of a cutting point of the workpiece by the rotation of the workpiece. A rotary table that supports a cylindrical workpiece and is rotatable about the cylindrical central axis;
A table rotating device for rotating the rotating table;
A tool support body;
A vibrating body that is formed in a cylindrical shape, is a lump disposed on the tool support body, and is disposed along the axis of the workpiece, and has an end surface along the axis of the workpiece on the workpiece side When,
A cutting tool provided at an edge of the columnar end surface of the vibrating body and protruding from the columnar end surface of the vibrating body and protruding from the columnar outer peripheral surface of the vibrating body When,
Moving means for cutting the workpiece by the cutting tool by relatively moving the rotary table and the tool support body at least in the direction of the rotation axis of the workpiece;
A nozzle for discharging a cutting fluid toward the cutting tool;
When the workpiece is being cut by the cutting tool, the cutting tool is vibrated by vibrating the vibrating body around the cylindrical axis of the vibrating body with respect to the tool support body. A vibration device;
Applying a vibration cutting device comprising:
Compared with the case where the cutting tool is not vibrated by vibrating the cutting tool by the vibration device, the existence range of the cutting fluid discharged toward the cutting tool is changed from the position of the cutting tool. wherein said end face of the cylindrical and along said outer peripheral surface of the cylindrical shape of the vibrating body is enlarged, vibration cutting method of the vibrating member at the periphery of the cutting tool.