JP2015188961A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably supply a coolant to a cut portion of a cutting tool in a cutting device which puts the cutting tool on a cut material to cut.SOLUTION: A cutting device includes: a chuck 2 which rotates while supporting a cut material w; and a fixing plate 5 which is arranged perpendicular to a rotation axis of the chuck 2 and is fixed facing the chuck 2 and spaced away from the chuck 2; and a coolant supply pipe 6 which supplies a coolant for cooling the cut material w to the space between the chuck 2 and the fixing plate 5.

Description

  The present invention relates to a cutting apparatus for cutting a work material attached to a processing machine.

  In a conventional machine tool, for example, a machine tool such as a lathe, a cutting tool for machining a work material tends to generate high temperatures due to heat generation at the tip of the cutting edge, which is a cutting point. is there. In particular, when cutting difficult-to-cut materials or high-hardness materials, or when performing high-speed cutting with a cutting speed of 200 m / min or more for the purpose of improving the working efficiency, the tip of the cutting edge becomes extremely hot and the tool life is extremely long. Becomes shorter. Therefore, removal and reduction of processing heat has become an important issue.

  Conventionally, the cutting tool has been cooled by jetting and supplying coolant from the dedicated nozzle toward the cutting tool. However, since this method is not sufficient, a method for improving the cooling efficiency by supplying a mist-like coolant containing air with better cooling efficiency from the nozzle is disclosed, for example, in Patent Document 1 below. Yes.

  In order to cool the tip of the cutting tool more actively, a method of providing a coolant supply hole in the cutting tool itself has also been proposed. Specifically, a method of cooling the entire cutting edge including the chip side by providing a coolant supply hole on the rake face side of the cutting tool is disclosed in, for example, Patent Document 2 below, and the flank face of the cutting tool A method of cooling from the back side of the blade edge by providing a coolant supply hole on the side is disclosed, for example, in Patent Document 3 below.

JP 2013-1332738 A JP 2012-45664 A JP2013-49106A

  As described in Patent Document 1 above, the method of supplying the coolant from the dedicated nozzle can be supplied regardless of the cutting tool, but when the cutting waste is entangled with the cutting edge, the coolant is not supplied to the core cutting edge. Blade temperature rises. Furthermore, if a nozzle is installed near the cutting edge, stress is applied to the nozzle by the entangled cutting waste, and the nozzle itself also bends, so it must be installed at a position that is not affected by this, that is, a position away from the processing point. There is a problem that the original cooling effect cannot be obtained sufficiently.

  In order to supply the coolant at a position as close as possible to the cutting tool, providing a coolant supply hole in the cutting tool itself as described in Patent Documents 2 and 3 above solves the above problem. Although effective, the coolant supply hole formed in the cutting tool and the axial center of the coolant supply pipe of the holder must be aligned with each other.

  The present invention has been made to solve the above-described problems, and can stably supply the coolant to the cutting location without arranging the coolant supply port close to the cutting edge of the cutting tool. An object of the present invention is to provide a cutting apparatus capable of solving the conventional problems.

  In order to achieve the above object, a cutting apparatus according to the first aspect of the present invention performs cutting by applying a cutting tool to a work material, and supports a rotating member that rotates while supporting the work material. A fixing member that is orthogonal to the rotating shaft of the rotating member and fixed to the rotating member with a gap therebetween, and that cools the work material in the gap between the rotating member and the fixing member. And a mechanism for supplying liquid to be used.

  Moreover, the cutting device according to the second invention is a cutting device that performs cutting by applying a cutting tool to a work material, the rotating member rotating while supporting the work material, and the rotating member A cylindrical fixing member that is coaxially provided with a gap between the rotating member and a liquid that cools the work material in the gap between the rotating member and the fixing member. It is characterized by having a supply mechanism.

  A cutting device according to the third invention is a cutting device that performs cutting by applying a cutting tool to a work material, and includes a drive mechanism that rotationally drives the cutting tool. A cylindrical fixing member that is coaxially provided to cover the outer periphery of the cutting tool and a clearance is provided, and a liquid that cools the work material is supplied to the clearance between the cutting tool and the fixing member. It is characterized by having a mechanism to perform.

  According to the present invention, when the rotating member is rotated while supplying the liquid between the rotating member and the fixed member disposed with a gap, the Weisenberg effect is generated and the cutting waste is entangled with the cutting edge. However, the liquid can be supplied toward the work material without the liquid supply being delayed.

  In particular, when the work material rotates, the liquid that normally scatters is supplied in a state of being wound around the work material without being scattered by the Weisenberg effect, so that effective cooling is possible. In addition, when a cutting tool such as milling rotates, coolant can be supplied along the rotation axis of the cutting tool, so even if the rotation axis of the cutting tool exists along the horizontal direction, gravity Regardless of this, the coolant can be supplied smoothly by the Weisenberg effect, and efficient cooling becomes possible.

It is sectional drawing which looked at the cutting apparatus in Embodiment 1 of this invention from the side surface side. It is sectional drawing which follows the AA line of FIG. It is sectional drawing of the headstock vicinity which looked at the modification of the cutting apparatus in Embodiment 1 of this invention from the side surface side. It is sectional drawing which follows the BB line of FIG. It is sectional drawing of the headstock vicinity which looked at the other modification of the cutting apparatus in Embodiment 1 of this invention from the side surface side. It is sectional drawing of the headstock vicinity which looked at the other modification of the cutting apparatus in Embodiment 1 of this invention from the side surface side. It is sectional drawing which looked at the cutting apparatus in Embodiment 2 of this invention from the side surface side. It is sectional drawing which follows the CC line of FIG. It is sectional drawing of the headstock vicinity which looked at the modification of the cutting apparatus in Embodiment 2 of this invention from the side surface side. It is a front view of the same apparatus shown in FIG. It is sectional drawing which looked at the cutting apparatus in Embodiment 3 of this invention from the side surface side. It is sectional drawing which follows the EE line | wire of FIG. It is sectional drawing which looked at the cutting apparatus in Embodiment 4 of this invention from the side surface side. It is sectional drawing which follows the FF line | wire of FIG. It is sectional drawing of the tailstock vicinity which looked at the modification of the cutting device in Embodiment 4 of this invention from the side surface side. It is sectional drawing of the tailstock vicinity which looked at the other modification of the cutting apparatus in Embodiment 4 of this invention from the side surface side. It is sectional drawing which looked at the cutting apparatus in Embodiment 5 of this invention from the side surface side. It is sectional drawing which follows the GG line of FIG. It is a side view which shows the cutting apparatus in Embodiment 6 of this invention. It is the top view which looked at the same apparatus shown in FIG. 19 from the bottom face side.

Embodiment 1 FIG.
1 is a cross-sectional view of a cutting device according to Embodiment 1 of the present invention as viewed from the side, and FIG. 2 is a cross-sectional view taken along the line AA of FIG.

  In the cutting apparatus according to the first embodiment, a drive motor (not shown) is built in the headstock 1, and a chuck 2 that holds one end side of the work material w is rotatably attached to a rotation shaft of the drive motor. . The chuck 2 includes a base portion 2a that is rotationally driven by a drive motor, and a grip portion 2b that grips one end portion of the work material w from three locations in the circumferential direction is attached to the base portion 2a.

  Further, a tailstock 3 that cantilever-supports the other end side of the work material w is provided at a position facing the chuck 2 along the axial direction of the work material w. The tailstock 3 includes a fixed portion 3a fixed to a casing (not shown), and a rotation center 3b that is rotatably attached to the fixed portion 3a and abuts on the work material w.

  As a feature of the first embodiment, a square-shaped fixing plate 5 is attached to the head stock 1 with fixing pins 4 provided at the four corners thereof so as to face the base portion 2a of the chuck 2 with a gap. ing.

  The fixing plate 5 is configured to be divided into two parts in the vertical direction in consideration of convenience of attachment to and removal from the headstock 1. At the center of the fixed plate 5, the grip 2 b of the chuck 2 can protrude toward the tailstock 3, and a circular opening 5 a for allowing coolant to be described later to flow toward the work material w is provided in the chuck. 2 is formed concentrically. In addition, when the work material w is attached to and detached from the chuck 2 on the fixed plate 5, the grip portion 2 b can move along the radial direction of the work material w according to the size of the work material w. In order to do so, notches 5b are formed at three locations along the circumferential direction of the opening 5a.

  A coolant supply pipe 6 for supplying coolant is attached to the upper part of the fixed plate 5, and the opening end of the coolant supply pipe 6 faces a gap between the base portion 2 a of the chuck 2 and the fixed plate 5. Is open.

  In this case, the coolant supplied from the coolant supply pipe 6 not only cools the work material w and the cutting tool 8 but also has a lubricating action. For example, a cutting fluid (Cutting Fluids) is made of polyurethane or polyester. Those having non-Newtonian properties by adding a thickening material of the system are applied.

  8 is a cutting tool for cutting the work material w. In the first embodiment, a slide mechanism (not shown) is directed from the tailstock 3 side toward the chuck 2 side along the axial direction of the work material w. Moved by.

  Here, the fixing plate 5 has a square shape, but the shape is not limited to such a shape as long as the size is sufficient to cover the chuck 2. Further, the fixing plate 5 is provided with a notch portion 5b for easily attaching and detaching the work material w. However, when the outer diameter of the work material w is fixed, the grip portion of the chuck 2 is fixed. In consideration of the movable range 2b, the notch 5b of the fixed plate 5 may be omitted. Even in this case, it is desirable to make the diameter of the opening 5a as small as possible.

  The rotating member in the claims corresponds to the chuck 2, the fixing member corresponds to the fixing plate 5, the liquid supply mechanism corresponds to the coolant supply pipe 6, and the liquid corresponds to the coolant. doing.

  In the above configuration, the work material w is rotated by the chuck 2 being rotated by the drive motor in the headstock 1 with one end fixed to the chuck 2 and the other end supported by the tailstock 3. Power is given. On the other hand, the coolant supplied from the coolant supply pipe 6 is introduced into the gap between the fixed plate 5 and the base portion 2a of the rotating chuck 2 to apply a shearing force.

  Since this coolant has non-Newtonian properties as described above, the Weisenberg effect occurs when shearing force is applied, and passes through the opening 5a of the fixed plate 5 along the axial direction of the work material w. And flow so as to cling to the surface of the work material w. At this time, if the cutting tool 8 is used for processing, the cutting can be performed in a state where the coolant is entangled with the surface of the work material w, and therefore the cutting edge of the cutting tool 8 and the work material w can be efficiently cooled. Is possible. Moreover, the coolant is prevented from being scattered by the Weisenberg effect, and the coolant flow rate can be saved.

  Note that if the amount of the thickening material added to the coolant is increased, the amount clinging to the surface of the work material w increases and the cutting becomes easy. For this purpose, the base portion of the fixed plate 5 and the chuck 2 is used. It is necessary to increase the gap with 2a to some extent. However, if the viscosity of the coolant is too high, chips will also cling to the surface of the work material w and will not be separated, making it difficult to cut and increasing the amount of protrusion of the fixed plate 5 toward the tailstock 3 side. Thus, problems such as difficulty in attaching / detaching the work material w to / from the chuck 2 occur. Therefore, the clearance between the fixing plate 5 and the base portion 2a of the chuck 2 is preferably in the range of 1 mm to 15 mm.

  In the configuration shown in FIG. 1 and FIG. 2, the shearing force is applied to the coolant by the gap between the base portion 2 a of the chuck 2 and the fixing plate 5. To apply the shearing force to the coolant in a wider area, for example, The configuration shown in FIGS. 3 and 4 can be adopted.

  FIG. 3 is a cross-sectional view in the vicinity of the headstock 1 as seen from the side of the modification of the cutting apparatus according to Embodiment 1 of the present invention, and FIG. 4 is a cross-sectional view taken along the line BB in FIG.

  In the configuration shown in FIGS. 3 and 4, a square-shaped fixing plate 5 is opposed to the base 1 by a fixing pin 4 provided at four corners of the headstock 1 with a gap therebetween. It is attached. The fixing plate 5 has a grip 2b of the chuck 2 that can protrude toward the tailstock 3 side, and that coolant can flow out toward the work material w. An opening 5 a having a large inner diameter is formed concentrically with the chuck 2.

  In addition, a hollow disk-shaped rotating plate 9 is disposed opposite to the fixed plate 5 at a position outward from the fixed plate 5 with a gap. The rotating plate 9 is attached to the base portion 2a of the chuck 2 by fixing pins 7 provided at three locations in the circumferential direction.

  The rotating plate 9 has a circular shape for allowing the grip 2b of the chuck 2 to protrude toward the tailstock 3 as well as the fixed plate 5 and for allowing coolant described later to flow out toward the work material w. The opening is formed concentrically with the chuck 2. In addition, the rotating plate 9 has a peripheral portion of the opening 9a so that the grip portion 2b can move along the radial direction of the work material w when the work material w is attached to and detached from the chuck 2. Cutouts 9b are formed at three locations along the direction.

  A coolant supply pipe 6 for supplying a coolant is attached to the upper part of the fixed plate 5, and the opening end of the coolant supply pipe 6 is located at a position facing the gap between the fixed plate 5 and the rotating plate 9. It is open.

  3 and 4, the rotating member in the claims corresponds to the chuck 2 and the rotating plate 9, the first rotating tool corresponds to the chuck 2, and the second rotating tool. Corresponds to the rotating plate 9 and the fixing member corresponds to the fixing plate 5.

  In this configuration, the coolant supplied from the coolant supply pipe 6 is introduced into the gap between the fixed plate 5 and the rotating plate 9. When the chuck 2 rotates, the rotating plate 9 also rotates, so that a shearing force is applied to the coolant introduced between the rotating plate 9 and the fixed plate 5. Since the coolant has non-Newtonian properties as described above, the coolant passes along the axial direction so as to be entangled with the surface of the work material w through the opening 9a of the rotating plate 9 by the Weisenberg effect.

  In this way, in the configuration shown in FIGS. 3 and 4, the rotating plate 9 facing the fixed plate 5 is provided, and the coolant is introduced between the both 5 and 9 so as to apply a shearing force. It becomes possible to apply a shearing force in the area, and the coolant can flow out along the surface of the work material w by enhancing the Weisenberg effect.

  Furthermore, in order to apply a shearing force to the coolant in a wider area than in the case shown in FIGS. 3 and 4, the fixed plate 5 and the rotating plate 9 can be configured in multiple stages. An example is shown in FIG.

  In the configuration shown in FIG. 5, two fixed plates 5 and two rotary plates 9 are provided, and the fixed plates 5 and the rotary plates 9 are alternately arranged from the headstock 1 toward the tailstock 3 side. Each fixing plate 5 is fixed to the headstock 1 with fixing pins 4 provided at four corners of the headstock 1. Each rotary plate 9 is attached to the base portion 2a of the chuck 2 by fixing pins 7 provided at three locations in the circumferential direction. In addition, since the structure itself of each fixed plate 5 and the rotating plate 9 is the same as that shown in FIGS. 3 and 4, detailed description is omitted here.

  Further, a coolant supply pipe 6 is disposed at a position above the outer peripheral ends of the fixed plate 5 and the rotary plate 9, and an open end of the coolant supply pipe 6 is opened at a position facing the gap between the fixed plate 5 and the rotary plate 9. doing.

  In this configuration, the coolant supplied from the coolant supply pipe 6 is introduced into the gaps between the fixed plates 5 and the rotary plates 9 to apply a shearing force. Since this coolant has non-Newtonian properties as described above, the shaft passes through the openings 5a and 9a of the fixed plate 5 and the rotating plate 9 and is entangled with the work material w by the Weisenberg effect. Proceed along the direction. As a result, more coolant can be supplied, and a temperature drop at the cutting point is expected.

  In the configuration shown in FIG. 5, the outer peripheral ends of the fixed plate 5 and the rotating plate 9 are open, but as shown in FIG. 6, below the outer peripheral ends of the fixed plate 5 and the rotating plate 9. A box-shaped liquid reservoir 10 that covers the portion may be provided, and the liquid reservoir 10 may be fixed to the lower end portion of the headstock 1.

  If such a liquid reservoir 10 is provided, in addition to the coolant supplied from the coolant supply pipe 6, the coolant accumulated in the liquid reservoir 10 also passes through the openings 5 a and 9 a of the fixed plate 5 and the rotating plate 9. Thus, the coolant advances in the axial direction so as to be entangled with the work material w, so that the coolant can be used more effectively.

Embodiment 2. FIG.
7 is a cross-sectional view of the cutting device according to Embodiment 2 of the present invention as viewed from the side, and FIG. 8 is a cross-sectional view taken along the line CC of FIG. 7, showing the embodiment shown in FIGS. Parts corresponding to or corresponding to the configuration of the first embodiment are denoted by the same reference numerals.

  In the cutting apparatus according to the second embodiment, a center 12 with a driver that holds one end of a work material w is rotatably attached to a rotation shaft of a drive motor (not shown) built in the headstock 1. The center 12 with a driver includes a short cylindrical base portion 12a, and a center pin 12b for fixing the center of the work material w to the center of the end portion of the base portion 12a on the tailstock 3 side; Claws 12c for fixing and rotating one end side of the work material w are provided at three locations in the circumferential direction around the center pin 12b. In addition, although the three nail | claw 12c is provided here, the number of the nail | claw 12c may change according to cutting torque.

  Further, a square-shaped fixing plate 5 is attached to the head stock 1 by fixing pins 4 provided at four corners thereof. At the center of the fixed plate 5, the base portion 12 a of the center 12 with a driver can protrude toward the tailstock 3 side, and the coolant can flow out toward the work material w. An opening 5a having an inner diameter larger than the outer diameter is formed concentrically with the base portion 12a. The fixing plate 5 is configured to be vertically divided into two in consideration of convenience of attachment to and removal from the headstock 1.

  Further, a hollow disk-shaped rotating plate 9 is disposed between the headstock 1 and the fixed plate 5, and the rotating plate 9 is fitted to the outer periphery of the base portion 12a of the center 12 with a driver, It is integrally fixed to the base portion 12 a via the fixing tool 13.

A coolant supply pipe 6 for supplying coolant is attached to the upper part of the fixed plate 5, and the open end of the coolant supply pipe 6 faces a gap where the fixed plate 5 and the rotating plate 9 face each other. Open to position.
The tailstock 3, the cutting tool 8, and the work material w are the same as those shown in FIGS. 1 and 2, so detailed description thereof is omitted here.

  The rotating member in the claims corresponds to the center 12 with the driver and the rotating plate 9, the first rotating tool is the center 12 with the driver, and the second rotating tool is the rotating plate 9. The fixing members respectively correspond to the fixing plates 5 described above.

  In the above-described configuration, the work material w is rotated by the center 12 with the driver rotated by the drive motor in the headstock 1 with both ends supported by the center 12 with the driver and the tailstock 3. Given. On the other hand, the coolant supplied from the coolant supply pipe 6 is introduced into a gap where the fixed plate 5 and the rotating plate 9 face each other. When the center 12 with the driver rotates, the rotating plate 9 also rotates with this, so that a shearing force is applied to the coolant entering the gap with the fixed plate 5.

  This coolant has non-Newtonian properties as in the first embodiment. Therefore, the Weisenberg effect is generated by applying a shearing force to the coolant, and the coolant passes through the opening 5a of the fixed plate 5 and flows out along the axial direction of the work material w via the center 12 with a driver. Then, it flows so as to cling to the surface of the work material w. At this time, if the cutting tool 8 is used for processing, the processing can be performed in a state where the coolant is entangled with the work material w, so that the cutting edge of the cutting tool 8 and the work material w can be efficiently cooled. It becomes. Moreover, the coolant is prevented from being scattered by the Weisenberg effect, and the coolant flow rate can be saved.

  In order to apply a shearing force to the coolant in a wider area than in the case shown in FIGS. 7 and 8, the fixed plate 5 and the rotating plate 9 can be configured in multiple stages. Examples thereof are shown in FIGS.

  In the configuration shown in FIGS. 9 and 10, two fixed plates 5 and one rotary plate 9 are provided, and the rotary plate 9 is disposed so as to be sandwiched between the front and rear fixed plates 5. Each fixing plate 5 is fixed to the headstock 1 with fixing pins 4 provided at the four corners of the headstock 1. Further, at the center of the fixing plate 5 on the tailstock 3 side, the base portion 12a of the center 12 with a driver can protrude toward the tailstock 3 side, and the coolant can flow out toward the work material w. Therefore, the opening 5a having an inner diameter larger than the outer diameter of the base portion 12a is formed concentrically with the base portion 12a. Each fixing plate 5 is configured to be vertically split into two in consideration of the convenience of attachment to and removal from the headstock 1.

  Further, the rotating plate 9 is a hollow disk-like shape and is fitted to the outer periphery of the base portion 12a of the center 12 with a driver, and at a place in contact with the base portion 12a of the center 12 with a driver of the rotating plate 9, In order to allow the coolant to flow out toward the work material w, substantially rectangular coolant passage holes 9c are formed at a plurality of locations along the circumferential direction.

  Further, a coolant supply pipe 6 is disposed at a position above the outer peripheral ends of the fixed plate 5 and the rotary plate 9, and the open end of the coolant supply pipe 6 is located at a position facing the gap between the fixed plate 5 and the rotary plate 9. It is open.

  In this configuration, the coolant supplied from the coolant supply pipe 6 is introduced into the gaps between the fixed plates 5 and the rotary plates 9 to apply a shearing force. Since this coolant has non-Newtonian properties as described above, the coolant passes through the coolant passage hole 9c of the rotating plate 9 and the opening portion 5a of the fixed plate 5 so as to be entangled with the work material w by the Weisenberg effect. Proceed along the axial direction. As a result, more coolant can be supplied, and a temperature drop at the cutting point is expected.

  In the configuration shown in FIGS. 9 and 10, the outer peripheral ends of the fixed plate 5 and the rotary plate 9 are open. However, as in the case shown in FIG. 6, the fixed plate 5 and the rotary plate It is also possible to provide a configuration in which a lower part of the outer peripheral end of the cover 9 is covered to provide a box-shaped liquid reservoir, and this liquid reservoir is fixed to the lower end portion of the headstock 1. In the configuration shown in FIGS. 9 and 10, only one rotating plate 9 is provided. However, as shown in FIGS. 5 and 6, a plurality of rotating plates 9 can be used.

Embodiment 3 FIG.
11 is a cross-sectional view of a cutting device according to Embodiment 3 of the present invention as viewed from the side, and FIG. 12 is a cross-sectional view taken along the line EE of FIG. Parts corresponding to or corresponding to the configuration of the first embodiment are denoted by the same reference numerals.

  In the cutting apparatus according to the third embodiment, a center 12 with a driver that holds one end side of a work material w is rotatably attached to a rotation shaft of a drive motor (not shown) built in the headstock 1. The configuration itself of the center 12 with driver is the same as that of the second embodiment shown in FIGS. 7 and 8, and therefore detailed description thereof is omitted here. Further, since the tailstock 3, the cutting tool 8, and the work material w are the same as those shown in FIGS. 1 and 2, detailed description thereof is omitted here.

  A feature of the third embodiment is that a cylindrical sleeve 15 having an inner diameter slightly larger than the base portion 12a is disposed so as to cover the outer periphery of the base portion 12a of the center 12 with a driver. The part is fixed to the headstock 1. Accordingly, a coolant discharge gap is formed between the inner peripheral surface of the sleeve 15 and the outer peripheral surface of the base portion 12a. The coolant supply pipe 6 is attached to the upper portion of the sleeve 15, and the open end of the coolant supply pipe 6 opens to a position facing the gap between the inner peripheral surface of the sleeve 15 and the outer peripheral surface of the base portion 12 a. Yes.

  The rotating member in the claims corresponds to the center 12 with a driver, and the cylindrical fixing member corresponds to the sleeve 15.

  In this configuration, the work material w is given a rotational force by rotating the center 12 with the driver while the both ends thereof are supported by the center 12 with the driver and the tailstock 3 respectively. On the other hand, the coolant supplied from the coolant supply pipe 6 is introduced into a gap between the sleeve 15 fixed to the headstock 1 and the base portion 12a of the rotating center 12 with a driver, thereby applying a shearing force.

  This coolant has non-Newtonian properties as described above. Therefore, the Weisenberg effect is generated by applying a shearing force to the coolant, and the coolant passes through the gap between the sleeve 15 and the center 12 with the driver, and the surface of the work material w along the axial direction of the work material w. It flows as if tying up. At this time, if the cutting tool 8 is used for processing, the cutting can be performed in a state where the coolant is entangled with the surface of the work material w, and therefore the cutting edge of the cutting tool 8 and the work material w can be efficiently cooled. Is possible. Moreover, the coolant is prevented from being scattered by the Weisenberg effect, and the coolant flow rate can be saved.

Embodiment 4 FIG.
13 is a cross-sectional view of a cutting device according to Embodiment 4 of the present invention as viewed from the side, and FIG. 14 is a cross-sectional view taken along the line F-F of FIG. Parts corresponding to or corresponding to the configuration of the first embodiment are denoted by the same reference numerals.

  In the cutting apparatus according to the fourth embodiment, the headstock 1, chuck 2, tailstock 3, cutting tool 8, and work material w are the same as those shown in FIGS. Then, detailed explanation is omitted.

  A feature of the fourth embodiment is that a hollow disk-shaped fixing plate 5 is fixed to the end surface portion of the fixing portion 3a of the tailstock 3 on the side of the rotation center 3b by a fixing pin 16. At a position on the second side, a hollow disk-shaped rotating plate 9 is disposed opposite to the fixed plate 5 with a gap.

  The rotating plate 9 is fitted to the outer periphery of the rotation center 3b of the tailstock 3 so that the coolant can flow out toward the work material w at a position where the rotating plate 9 contacts the rotation center 3b. Therefore, substantially rectangular coolant passage holes 9c are formed at a plurality of locations along the circumferential direction.

Further, a coolant supply pipe 6 is disposed at a position above the fixed plate 5, and an opening end of the coolant supply pipe 6 is opened at a position facing a gap where the fixed plate 5 and the rotating plate 9 face each other.
Here, both the fixed plate 5 and the rotating plate 9 are formed in a disc shape, but the shape is not limited to such a shape as long as the fixed plate 5 and the rotating plate 9 face each other.

  The rotating member in the claims corresponds to the rotating center 3b and the rotating plate 9 of the tailstock 3, the first rotating tool is the rotating center 3b, and the second rotating tool is the rotating center. The fixing member corresponds to the plate 9 and the fixing plate 5 described above.

  In this configuration, the work material w attached to the chuck 2 is given a rotational force while being supported by the rotation center 3 b of the tailstock 3 as the chuck 2 rotates. On the other hand, the coolant supplied from the coolant supply pipe 6 enters a gap between the fixed plate 5 and the rotating plate 9 to apply a shearing force.

  This coolant has non-Newtonian properties as described above. Therefore, the coolant flows so as to cling to the surface of the work material w along the axial direction of the work material w through the coolant passage hole 9c of the rotating plate 9 by the Weisenberg effect. At this time, if the cutting tool 8 is used for processing, the cutting can be performed in a state where the coolant is entangled with the surface of the work material w, and therefore the cutting edge of the cutting tool 8 and the work material w can be efficiently cooled. Is possible. Moreover, the coolant is prevented from being scattered by the Weisenberg effect, and the coolant flow rate can be saved.

  The configurations shown in FIGS. 13 and 14 can be modified as shown in FIGS. 15 and 16.

  FIG. 15 is a cross-sectional view of the tailstock 3 and its vicinity as seen from the side of the modification of the cutting apparatus according to Embodiment 4 of the present invention.

  In the configuration shown in FIG. 15, each configuration of the fixed plate 5, the rotating plate 9, and the coolant supply pipe 6 is the same as that shown in FIGS. 13 and 14. A rotating plate guard 17 is fixed to the peripheral end of the rotating plate 9 so as to cover the outer peripheral edge of the rotating plate 9.

  The rotating plate guard 17 includes a short cylindrical ring portion 17a having an inner diameter substantially the same as the outer diameter of the fixed plate 5, and a rotating plate 9 and a part thereof radially inward from the peripheral edge of the ring portion 17a. It consists of a bent portion 17b extending so as to face each other, and a recess for liquid pool is formed by the ring portion 17a and the bent portion 17b.

If such a recess for the liquid reservoir is provided, the coolant supplied from the coolant supply pipe 6 and the coolant accumulated in the liquid reservoir also pass through the coolant passage hole 9c of the rotating plate 9 on the surface of the work material w. Since it progresses along the axial direction so as to cling, the coolant can be used more effectively.
In the first and second embodiments, the rotating plate guard 17 having such a configuration can be installed.

  FIG. 16 is a sectional view of the vicinity of the tailstock 3 as seen from another side of the cutting device according to Embodiment 4 of the present invention.

  In the configuration shown in FIGS. 13 to 15, the fixed plate 5 and the rotary plate 9 are sequentially arranged toward the tip of the rotation center 3 b of the tailstock 3, but as shown in FIG. It is also possible to adopt a configuration in which the arrangement order of the rotating plates 9 is reversed.

  That is, the configuration shown in FIG. 16 is the same as the case shown in FIGS. 13 to 15 in that the rotary plate 9 is externally fitted to the rotary center 3b. The coolant passage hole 9c as shown in FIGS. 13 to 15 is not formed.

  On the other hand, a fixing plate fixture 18 is externally fitted and fixed to the fixing portion 3a of the tailstock 3. The fixing plate 5 is fixed to the fixing plate fixture 18 via fixing pins 4 provided at four locations thereof. Is attached. The fixed plate 5 is positioned on the distal end side of the rotation center 3b with respect to the rotary plate 9, and is disposed opposite the rotary plate 9 with a gap.

  At the center of the fixed plate 5, the rotation center 3 b of the tailstock 3 can protrude toward the chuck 2, and a circular opening 5 a for allowing coolant to flow toward the work material w is provided at the rotation center 3 b. It is formed concentrically with. Further, a coolant supply pipe 6 is disposed on the fixed plate 5 at a position above the fixed plate 5, and an opening end of the coolant supply pipe 6 opens at a position facing a gap where the fixed plate 5 and the rotating plate 9 face each other. ing.

  In this configuration, the coolant supplied from the coolant supply pipe 6 is subjected to a shearing force by entering the gap between the fixed plate 5 and the rotating plate 9, passes through the opening 5 a of the fixed plate 5, and the work material w It flows so as to cling to the surface of the work material w along the axial direction. In that case, since the coolant passage hole as shown in FIGS. 13 to 15 is not formed in the rotating plate 9, the coolant can be prevented from flowing out to the fixed portion 3 a side of the tailstock 3.

  In addition to the configuration of the fourth embodiment, as shown in the first and second embodiments, the fixed plate 5 and the rotating plate 9 are configured in a multi-stage configuration to supply coolant more efficiently. Is also possible. Further, by combining the configurations of the first, second, and third embodiments with the configuration of the fourth embodiment, the fixed plate 5 and the rotating plate 9 may be used on both the chuck 2 side and the tailstock 3 side. Is possible.

Embodiment 5 FIG.
FIG. 17 is a cross-sectional view of a cutting device according to Embodiment 5 of the present invention as viewed from the side, and FIG. 18 is a cross-sectional view taken along the line GG of FIG. Parts corresponding to or corresponding to the configuration of the first embodiment are denoted by the same reference numerals.

  In the cutting apparatus of the fifth embodiment, the headstock 1, chuck 2, tailstock 3, cutting tool 8, and work material w are the same as those shown in FIGS. Then, detailed explanation is omitted. Reference numeral 19 denotes a casing for fixing the tailstock 3.

  A feature of the fifth embodiment is that a cylindrical sleeve 15 having an inner diameter slightly larger than the outer diameter of the rotation center 3b is disposed so as to cover the outer periphery of the rotation center 3b of the tailstock 3. One end of 15 is fixed to the fixing portion 3a. Therefore, a coolant discharge gap is formed between the inner peripheral surface of the sleeve 15 and the outer peripheral surface of the rotation center 3b.

  A coolant supply pipe 6 is attached to the upper portion of the sleeve 15, and the open end of the coolant supply pipe 6 opens to a position facing the gap between the inner peripheral surface of the sleeve 15 and the outer peripheral surface of the rotation center 3 b. Yes.

  The rotating member in the claims corresponds to the rotating center 3b of the tailstock 3, and the fixing member corresponds to the sleeve 15.

  In this configuration, the work material w attached to the chuck 2 is given a rotational force while being supported by the rotation center 3 b of the tailstock 3 as the chuck 2 rotates. On the other hand, the coolant supplied from the coolant supply pipe 6 is introduced into the gap between the sleeve 15 fixed to the fixed portion 3a and the rotation center 3b, so that a shearing force is applied.

  This coolant has non-Newtonian properties as described above. Therefore, the Weisenberg effect is generated by applying a shearing force to the coolant, and the coolant passes through the gap between the sleeve 15 and the rotation center 3b and moves toward the chuck 2 along the axial direction of the workpiece w. It flows so as to cling to the surface of w. At this time, if the cutting tool 8 is used for processing, the cutting can be performed in a state where the coolant is entangled with the surface of the work material w, and therefore the cutting edge of the cutting tool 8 and the work material w can be efficiently cooled. Is possible. Moreover, the coolant is prevented from being scattered by the Weisenberg effect, and the coolant flow rate can be saved.

  Further, the coolant can be supplied more efficiently by combining the configurations of the first, second, and third embodiments and the configuration of the fifth embodiment.

Embodiment 6 FIG.
In the configuration shown in the third embodiment and the fifth embodiment described above, the cylindrical sleeve 15 is disposed so as to cover the outer periphery of the center 12 with a driver that rotates with the work material w and the rotation center 3b. Such a sleeve 15 can also be used when milling such as an end mill is performed on a composite lathe. Examples thereof are shown in FIGS.

  19 is a side view showing a cutting apparatus according to Embodiment 6 of the present invention, and FIG. 20 is a plan view of the apparatus shown in FIG. 19 viewed from the bottom side.

  In the cutting apparatus according to the sixth embodiment, a base end portion 23a of an end mill 23 is held by a rotary tool holder 22, and the rotary tool holder 22 is attached to a drive mechanism having a drive motor (not shown). And the end mill 23 rotates with the rotary tool holder 22 by a drive mechanism.

  The end mill 23 is provided with a cylindrical sleeve 15 that covers the outer periphery of the base end portion 23a and has a slightly larger inner diameter than the outer periphery of the base end portion 23a. Therefore, a coolant discharge gap is formed between the inner peripheral surface of the sleeve 15 and the outer peripheral surface of the base end portion 23 a of the end mill 23.

  The sleeve 15 is fixed to a casing (not shown), and the coolant supply pipe 6 is attached to the outer peripheral portion of the sleeve 15. The open end of the coolant supply pipe 6 is connected to the inner peripheral surface of the sleeve 15 and the end mill 23. It opens to a position facing the gap with the outer peripheral surface of the base end portion 23a.

  The cutting tool in the claims corresponds to the end mill 23, and the fixing member corresponds to the sleeve 15.

  In this configuration, the end mill 23 is rotated together while being held by the rotary tool holder 22. The coolant supplied from the coolant supply pipe 6 in a state where the end mill 23 is rotated is introduced into the gap between the sleeve 15 and the base end portion 23 a of the end mill 23, thereby applying a shearing force.

  This coolant has non-Newtonian properties as described above. Therefore, the Weisenberg effect is generated by applying a shearing force to the coolant, and the coolant passes through the gap between the sleeve 15 and the base end portion 23a of the end mill 23 and moves toward the cutting edge 23b of the end mill 23 along the axial direction of the end mill 23. It flows as if it's a clue.

  At this time, if milling of a work material (not shown) is performed using the end mill 23, the work can be performed in a state where the coolant is entangled with the surface of the work material. It becomes possible to cool. Moreover, the coolant is prevented from being scattered by the Weisenberg effect, and the coolant flow rate can be saved.

  In particular, even when the axial center direction of the end mill 23 together with the rotary tool holder 22 is arranged parallel to the horizontal plane, a non-Newtonian coolant is introduced into the gap between the sleeve 15 and the base end portion 23 a of the end mill 23. Since the Weisenberg effect is generated by applying the shearing force, the coolant can be smoothly supplied by the Weisenberg effect without depending on the gravity, so that the end mill 23 and the work material can be efficiently cooled. .

  Note that a configuration in which the fixed plate 5 and the rotating plate 9 are combined as shown in the first and second embodiments can be used for a rotating tool such as the end mill 23.

  The present invention is not limited to the configurations shown in the first to sixth embodiments, and modifications may be made to the configurations of the first to sixth embodiments without departing from the spirit of the present invention. Part of the configuration can be omitted, and the configurations of the first to sixth embodiments can be combined as appropriate.

1 spindle head, 2 chuck, 3 tailstock, 5 fixing plate, 6 coolant supply pipe,
8 cutting tool, 9 rotating plate, 12 center with driver, 15 sleeve,
23 End mill.

Claims (7)

A cutting device that performs cutting by applying a cutting tool to a work material,
A rotating member that supports and rotates the work material; and a fixing member that is orthogonal to the rotating shaft of the rotating member and fixed to the rotating member with a gap therebetween. A cutting apparatus comprising a mechanism for supplying a liquid for cooling the work material into a gap with the fixing member. While the fixing member is a flat plate orthogonal to the rotation axis, the rotating member includes a first rotating tool that holds the work material, and the fixing member attached to the first rotating tool. The cutting apparatus according to claim 1, comprising a flat plate-like second rotating tool arranged to face each other with a gap. A cutting device that performs cutting by applying a cutting tool to a work material,
A rotary member that rotates while supporting the work material; and a cylindrical fixing member that covers the outer periphery of the rotary member and is provided coaxially with the rotary member in a gap. A cutting apparatus comprising a mechanism for supplying a liquid for cooling the work material to a gap between the fixing member and the fixing member. The cutting apparatus according to any one of claims 1 to 3, wherein a gap between the rotating member and the fixed member is set to an interval in a range of 1 mm to 15 mm. A cutting device that performs cutting by applying a cutting tool to a work material,
A driving mechanism that rotationally drives the cutting tool, a cylindrical fixing member that covers the outer periphery of the cutting tool and is provided coaxially with the cutting tool and a gap, and the cutting tool; A cutting apparatus comprising a mechanism for supplying a liquid for cooling the work material into a gap with the fixing member. 6. The cutting apparatus according to claim 5, wherein a gap between the cutting tool and the fixing member is set to a range of 1 mm to 15 mm. The cutting apparatus according to any one of claims 1 to 6, wherein the liquid has a non-Newtonian property.

Images