JP2021186956A - Processing device and ultrasonic tool chuck - Google Patents

Abstract

To provide a processing device and an ultrasonic tool chuck which can provide ultrasonic processing to a workpiece with an inexpensive structure based on a general machining center.SOLUTION: An ultrasonic milling chuck 18 is structured of a milling chuck main body 31 and a main body support part 32. The miling chuck main body 31 includes a shank 41 mounted on a lower end of a spindle main shaft 16, a booster 43 to which a processing tool is connected, and an ultrasonic oscillator 44 which provides ultrasonic oscillation to the processing tool through the booster 43. The main body support part 32 is positioned beneath a spindle outer cylinder 15, and supports rotation of the milling chuck main body 31 in a state where relative rotation to the spindle outer cylinder 15 is restricted. The main body support part 32 includes a feeding pin 72 for supplying electricity to the ultrasonic oscillator 44, and the feeding pin 72 and a feeding socket 74 are connected by operation by which the milling chuck main body 31 is mounted on the spindle main shaft 16.SELECTED DRAWING: Figure 9

Description

The present invention is a machining apparatus that rotates a machining tool by a spindle spindle that rotates around a vertical axis and ultrasonically processes a workpiece by applying ultrasonic vibration to the machining tool, and a super that connects the machining tool to the spindle spindle of this machining apparatus. Regarding the ultrasonic tool chuck.

Conventionally, a machining device called a machining center has a configuration in which a machining tool is connected to the lower end of a spindle spindle that rotates around a vertical axis via a tool chuck, and the machining tool is automatically replaced according to the machining purpose. While doing so, various processing operations can be performed. In a machining center generally available on the market, the tool chuck can be fixed to the spindle spindle by fitting the shank of the tool chuck into the shank fitting hole formed at the lower end of the spindle spindle. With such a configuration, automatic replacement of the tool chuck (that is, the machining tool) is easy, and the work can be performed in an extremely short time.

By the way, in such a processing device, by applying ultrasonic vibration to the processing tool by an ultrasonic vibrator, a work made of a material generally difficult to process such as a brittle material or a high hardness material can be formed. On the other hand, those that can be subjected to elaborate processing are known. For example, in the processing apparatus shown in Patent Document 1 below, an ultrasonic vibrator is built in the spindle spindle, and ultrasonic vibration can be applied to the processing tool through a tool holder (tool chuck). .. The tool holder is screwed onto the lower end of the spindle spindle, and the machining tool can be replaced together with the tool holder.

Japanese Unexamined Patent Publication No. 2013-39627

However, the processing apparatus disclosed in Patent Document 1 has a structure in which an ultrasonic vibrator is built in a spindle spindle and a structure in which a tool holder is screwed into the lower end of the spindle spindle. It could not be manufactured based on the machining center, and it had to be a dedicated product. Therefore, there is a problem that the manufacturing cost may be high.

Therefore, an object of the present invention is to provide a processing apparatus capable of performing ultrasonic processing on a work with an inexpensive configuration based on a general machining center, and an ultrasonic tool chuck used in this processing apparatus.

The processing apparatus of the present invention includes a spindle spindle that rotates around an vertical axis inside a spindle outer cylinder extending in the vertical direction, and an ultrasonic tool chuck that connects a machining tool to the lower end of the spindle spindle. A processing device that rotates the processing tool and applies ultrasonic vibration to the processing tool to perform ultrasonic processing of the work. The ultrasonic tool chuck is a shank attached to the lower end of the spindle spindle. A tool chuck body provided with a booster provided at the bottom of the shank to which the processing tool is connected, an ultrasonic transducer provided inside the shank and applying ultrasonic vibration to the processing tool via the booster, and a tool chuck body. It is located below the spindle outer cylinder and includes a main body support portion that supports the rotation of the tool chuck main body in a state where relative rotation with respect to the spindle outer cylinder is restricted, and the main body support portion is the ultrasonic transducer. Has a power supply unit for supplying electricity to the power supply unit and a chuck side terminal connected to the power supply unit, and is provided at the chuck side terminal and the lower end of the spindle outer cylinder by the operation of attaching the tool chuck body to the spindle spindle. The connection between the chuck side terminal and the power supply side terminal is released by the operation of connecting the power supply side terminal and removing the tool chuck main body from the spindle spindle.

In the ultrasonic tool chuck of the present invention, the machining tool is rotated by the spindle spindle that rotates around the vertical axis inside the spindle outer cylinder extending in the vertical direction, and the machining tool is subjected to ultrasonic vibration to perform ultrasonic machining of the work. An ultrasonic tool chuck that connects the machining tool to the lower end of the spindle spindle, a shank attached to the lower end of the spindle spindle, and a shank provided at the lower end of the shank to connect the machining tool. A tool chuck body provided inside the booster and the shank and provided with an ultrasonic vibrator that applies ultrasonic vibration to the processing tool via the booster, and a spindle outer cylinder located below the spindle outer cylinder. It is provided with a main body support portion that supports the rotation of the tool chuck main body in a state where the relative rotation with respect to the tool chuck is restricted, and the main body support portion includes a feeding portion that supplies electricity to the ultrasonic transducer and a chuck connected to the feeding portion. By the operation of having the side terminal and attaching the tool chuck main body to the spindle spindle, the chuck side terminal and the power supply side terminal provided at the lower end of the spindle outer cylinder are connected, and the tool chuck main body is said. By the operation of being removed from the spindle spindle, the connection between the chuck side terminal and the power supply side terminal is released.

According to the present invention, it is possible to perform ultrasonic processing on a work with an inexpensive configuration based on a general machining center.

Perspective view of the processing apparatus according to the embodiment of the present invention. Side view of processing equipment Perspective view of the main part of the processing equipment from an oblique descent Side view of the main part of the processing equipment Side sectional view of the main part of the processing equipment Perspective view of the ultrasonic milling chuck of the processing equipment from diagonally above Enlarged view of the area AR in FIG. Partially disassembled sectional view in FIG. An exploded perspective view of the main part of the processing equipment as seen from diagonally below. (A) (b) (c) The figure which shows the replacement procedure of the ultrasonic milling chuck in the processing apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a processing apparatus 1 according to an embodiment of the present invention. The processing apparatus 1 includes a base 11, an XY table 12, a vertical support portion 13, a horizontal support portion 14, a spindle outer cylinder 15, a spindle spindle 16, a spindle spindle drive motor 17, an ultrasonic milling chuck 18 as an ultrasonic tool chuck, and the like. It is equipped with a machining tool 19 and an automatic switching machine 21. In the present embodiment, for convenience of explanation, one direction in the horizontal plane is defined as the X-axis direction, and the direction in the horizontal plane orthogonal to the X-axis direction is defined as the Y-axis direction. Further, the vertical direction is defined as the Z-axis direction.

In FIGS. 1 and 2, the base 11 has a flat upper surface 11a, and the XY table 12 is installed on the upper surface 11a of the base 11. The XY table 12 has a work mounting portion 12a whose upper surface is a work mounting surface, an X-axis table 12b that moves the work mounting portion 12a in the X-axis direction, and an X-axis table 12b that moves in the Y-axis direction. It is equipped with a Y-axis table 12c. In the XY table 12, the work mounting portion 12a is moved in the X-axis direction by the X-axis table 12b in a state where the work WK to be machined is placed on the work mounting portion 12a, and the Y-axis table 12c is used. By moving the X-axis table 12b in the Y-axis direction, the work WK is moved in the XY plane.

The vertical support portion 13 is provided so as to extend upward from one end of the upper surface 11a of the base 11. The horizontal support portion 14 is provided so as to extend in the Y-axis direction from the upper end of the vertical support portion 13 toward the inside of the base 11. The horizontal support portion 14 is movable in the Z-axis direction with respect to the vertical support portion 13.

The spindle outer cylinder 15 is a hollow cylindrical member, and is provided so as to extend downward from the horizontal support portion 14. The spindle spindle 16 is rotatably provided around the Z axis (upper and lower axes) inside the spindle outer cylinder 15. The spindle spindle drive motor 17 is provided above the horizontal support portion 14, and rotates the spindle spindle 16 around the Z axis inside the spindle outer cylinder 15.

The ultrasonic milling chuck 18 is detachably attached to the lower end of the spindle spindle 16. The ultrasonic milling chuck 18 can hold the machining tool 19 at the lower end and has a function of connecting the machining tool 19 to the spindle spindle 16. Here, it is assumed that the processing tool 19 is a milling tool that performs milling (cutting) processing on the work WK.

In FIGS. 3, 4 and 5, the ultrasonic milling chuck 18 has a milling chuck main body 31 and a main body support portion 32. The milling chuck main body 31 has a shape extending in the Z-axis direction as a whole, and includes a shank 41, a pull stud bolt 42, a booster 43, an ultrasonic vibrator 44, and an upper and lower feeding rotor 45.

In FIG. 5, the upper half of the shank 41 is a conical portion 41S having a shape that narrows upward. A cavity 41K that opens downward is formed in the lower half of the shank 41. A flange portion 41T is provided on the upper portion of the shank 41, and a groove-shaped portion 41M extending along the outer periphery is formed on the outer surface of the flange portion 41T (FIGS. 3 and 5).

The lower part of the pull stud bolt 42 is screwed to the upper end of the shank 41, and the upper part extends upward. The booster 43 has a cylindrical shape extending in the Z-axis direction. The upper portion of the booster 43 is located in the hollow portion 41K of the shank 41, and the tool holding portion 43T for holding the machining tool 19 is provided in the lower portion.

In FIG. 5, the ultrasonic transducer 44 is attached to the upper end of the booster 43 and is located in the cavity 41K of the shank 41. The upper and lower power feeding rotors 45 are provided so as to be exposed on the outer peripheral surface of the shank 41. Positive and negative electrodes (not shown) of the ultrasonic transducer 44 are connected to the upper and lower feeding rotors 45 via wiring (not shown).

In FIG. 5, a shank fitting hole 16H is provided at the lower end of the spindle spindle 16. The shank fitting hole 16H has a conical inner surface 16M that extends downward. A pull stud retracting mechanism 16R is provided inside the spindle spindle 16 (see also FIG. 2). The pull stud retracting mechanism 16R extends vertically inside the spindle spindle 16 and can move up and down, and is provided with a clamp portion 16C capable of clamping the pull stud bolt 42 at the lower end.

When the shank 41 is fitted into the shank fitting hole 16H from below, the pull stud retracting mechanism 16R rises while clamping the pull stud bolt 42 by the clamp portion 16C (arrow P shown in FIG. 5). Therefore, the pull stud bolt 42 is pulled into (pulled up) inside the spindle spindle 16, and the outer surface of the conical portion 41S of the shank 41 comes into close contact with the inner surface 16M of the shank fitting hole 16H. As a result, the shank 41 (that is, the milling chuck main body 31) is fixed to the spindle spindle 16. The milling chuck main body 31 fixed to the spindle spindle 16 rotates integrally with the spindle spindle 16, and the machining tool 19 held by the tool holding portion 43T rotates around the central axis (Z axis) of the spindle spindle 16.

In FIGS. 3, 4, 5, and 6, the main body support portion 32 includes a drum portion 32A and an overhanging portion 32B. The drum portion 32A has a cylindrical outer shell portion 51 and a bottom portion 52 provided below the outer shell portion 51. Inside the drum portion 32A, a plurality of bearings 53 that support the side surface of the milling chuck main body 31 (specifically, the side surface of the shank 41) are attached. The bottom portion 52 has a hole that penetrates vertically, and the lower half portion (tool holding portion 43T) of the milling chuck main body 31 is projected downward from this hole.

In FIGS. 3, 4, 5, and 6, the overhanging portion 32B is provided so as to project laterally from the outer shell portion 51 of the drum portion 32A. A protrusion 61 extending upward is provided on the upper portion of the overhanging portion 32B.

In FIGS. 3, 5 and 7 (FIG. 7 is an enlarged view of the region AR in FIG. 5), the brush unit 62 is attached to the inside of the overhanging portion 32B. As shown in FIGS. 7 and 8 (FIG. 8 is an exploded view in FIG. 7), the brush unit 62 is held vertically by the brush holder 63 fitted inside the overhanging portion 32B and the brush holder 63. It includes a pair of feeding brushes 64.

The pair of feeding brushes 64 are in contact with the upper and lower feeding rotors 45 provided on the milling chuck main body 31. Each feeding brush 64 is pressed against the corresponding feeding rotor 45 by an urging spring 65, respectively. The slip ring 66 including the feeding rotor 45 and the feeding brush 64 functions as a feeding unit that supplies electricity to the ultrasonic transducer 44.

In FIGS. 3, 4 and 6, a lid member 67 is attached to the overhanging portion 32B, and the brush unit 62 is prevented from falling off from the overhanging portion 32B by the lid member 67. The lid member 67 is detachably attached to the overhanging portion 32B by a plurality of screws 68. Therefore, the brush unit 62 is detachable from the overhanging portion 32B, and the power supply brush 64, which is a consumable item, can be easily replaced.

In FIGS. 5 and 9, a detent block 71 having a protrusion engaging portion 71W opened downward is provided at the lower end of the spindle outer cylinder 15. When the shank 41 of the milling chuck main body 31 is attached to the lower end of the spindle spindle 16, the protrusion 61 provided on the overhanging portion 32B is the protrusion engaging portion of the detent block 71 provided on the spindle outer cylinder 15. It is designed to engage 71W from below.

As described above, in a state where the protrusion 61 provided on the overhanging portion 32B is engaged with the detent block 71 of the spindle outer cylinder 15, the main body support portion 32 of the ultrasonic milling chuck 18 with respect to the spindle outer cylinder 15. Relative rotation of the spindle spindle 16 around the central axis is restricted. Therefore, even when the spindle spindle 16 rotates, the main body support portion 32 does not rotate, and only the milling chuck main body 31 rotates integrally with the spindle spindle 16. At this time, the milling chuck main body 31 rotates around the Z axis (upper and lower axis) in a state of being supported by a plurality of bearings 53 included in the main body support portion 32.

As described above, the ultrasonic milling chuck 18 included in the processing apparatus 1 according to the present embodiment has a configuration including a milling chuck main body 31 and a main body support portion 32. The milling chuck main body 31 is provided via a shank 41 attached to the lower end of the spindle spindle 16, a booster 43 provided at the bottom of the shank 41 to which the processing tool 19 is connected, and a booster 43 provided inside the shank 41. The processing tool 19 is provided with an ultrasonic vibrator 44 that applies ultrasonic vibration, and functions as a tool chuck main body. The main body support portion 32 is located below the spindle outer cylinder 15, and supports the rotation of the milling chuck main body 31 in a state where the relative rotation with respect to the spindle outer cylinder 15 is restricted.

In FIGS. 3, 4, 6 and 9, two feeding pins 72 are provided so as to project upward on the main body support portion 32 (specifically, the upper portion of the overhanging portion 32B). These two feeding pins 72 are provided on the milling chuck main body 31 side and function as chuck side terminals connected to the slip ring 66 (specifically, connected to the feeding brush 64).

In FIGS. 3, 4, and 6, a power supply block 73 is provided on the lower surface side of the spindle outer cylinder 15. The power supply block 73 is provided with two power supply sockets 74 that are open downward. The two power supply sockets 74 function as power supply side terminals connected to a power supply (not shown) provided outside the processing apparatus 1 via a power supply cable 75 (FIGS. 3 and 4) extending from the power supply block 73.

When the milling chuck main body 31 is attached to the lower end of the spindle spindle 16, the two feeding pins 72 are fitted into the two feeding sockets 74 from below and are electrically connected (FIGS. 3 and 4). ). Therefore, the electricity supplied by the power supply is supplied to the ultrasonic transducer 44 in the milling chuck main body 31 through the power supply cable 75, the two power supply sockets 74, the two power supply pins 72, and the slip ring 66. Therefore, in a state where the milling chuck main body 31 is attached to the lower end of the spindle spindle 16, the booster 43 can be ultrasonically driven by the ultrasonic vibrator 44 to apply ultrasonic vibration to the processing tool 19.

In the processing apparatus 1 of the present embodiment, when the ultrasonic milling chuck 18 is attached to the lower end of the spindle spindle 16, first, as shown in FIG. 9, the ultrasonic milling chuck 18 is positioned below the spindle spindle 16. .. At this time, the shank 41 of the milling chuck main body 31 is located below the shank fitting hole 16H of the spindle spindle 16, and the protrusion 61 provided in the main body support portion 32 engages with the protrusion of the detent block 71 provided on the spindle outer cylinder 15. The two feeding pins 72 provided in the milling chuck main body 31 are aligned below the portion 71W and below the two feeding sockets 74 provided in the spindle outer cylinder 15.

After aligning as described above, the ultrasonic milling chuck 18 is moved upward relative to the spindle spindle 16 to fit the shank 41 into the shank fitting hole 16H. When the shank 41 is fitted into the shank fitting hole 16H, the pull stud retracting mechanism 16R clamps the pull stud bolt 42 and pulls it upward, so that the milling chuck main body 31 is fixed to the spindle spindle 16.

When the shank 41 is fitted into the shank fitting hole 16H, the protrusion 61 provided on the milling chuck main body 31 engages with the protrusion engagement portion 71W of the detent block 71 provided on the spindle outer cylinder 15 from below, and the main body is engaged. The overhanging portion 32B of the support portion 32 is prevented from rotating (rotation is restricted) with respect to the spindle outer cylinder 15. Further, the two feeding pins 72 provided in the milling chuck main body 31 are fitted into the two feeding sockets 74 provided in the spindle outer cylinder 15 from below, and the ultrasonic vibrator 44 is connected to the power supply.

As described above, in the ultrasonic milling chuck 18 of the processing apparatus 1 in the present embodiment, the protrusion 61 is attached to the protrusion engagement portion 71W of the detent block 71 by the operation in which the milling chuck main body 31 is attached to the lower end of the spindle spindle 16. Engagement is performed to prevent the spindle outer cylinder 15 of the main body support portion from rotating (rotation is restricted), and the power supply pin 72 and the power supply socket 74 are connected to electrically connect the ultrasonic transducer 44 and the power supply. Connection is made.

On the other hand, when the ultrasonic milling chuck 18 attached to the spindle spindle 16 is removed from the spindle spindle 16, the ultrasonic milling chuck 18 is moved downward after releasing the clamp of the pull stud bolt 42 by the pull stud retracting mechanism 16R. reduce. When the ultrasonic milling chuck 18 is removed from the spindle spindle 16, at the same time, the protrusion 61 provided on the ultrasonic milling chuck 18 is separated from the detent block 71 provided on the spindle outer cylinder 15, and the spindle outer cylinder 15 is removed. The rotation restriction of the main body support portion 32 is released, and the two feeding pins 72 provided on the ultrasonic milling chuck 18 are separated from the two feeding sockets 74 provided on the spindle outer cylinder 15, and the ultrasonic transducer 44 is separated from the two feeding sockets 74. And the power supply are disconnected from the electrical connection.

As described above, in the ultrasonic milling chuck 18 of the processing apparatus 1 in the present embodiment, the protrusion 61 is removed from the protrusion engagement portion 71W of the detent block 71 by the operation of removing the milling chuck main body 31 from the lower end of the spindle spindle 16. When the overhanging portion 32B is separated from the spindle outer cylinder 15, the rotation stopper (rotation restriction) is released, and the connection between the power supply pin 72 and the power supply socket 74 is released, so that the ultrasonic vibrator 44 and the power supply are connected. The electrical connection is to be disconnected.

When ultrasonic processing is performed on the work WK by the processing device 1, the processing tool 19 is connected to the lower end of the spindle spindle 16 via the ultrasonic milling chuck 18 and the processing is performed by supplying power to the ultrasonic transducer 44. The tool 19 is subjected to ultrasonic vibration, and the machining tool 19 is rotated by the spindle spindle drive motor 17 via the spindle spindle 16. Then, the machining tool 19 is brought into contact with the work WK by combining the operation of moving the work WK into the XY plane by the XY table 12 and the operation of moving the horizontal support portion 14 (that is, the machining tool 19) in the Z-axis direction. While moving relative to each other, the work WK is cut into a desired shape.

As described above, the machining apparatus 1 in the present embodiment rotates the machining tool 19 by the spindle spindle 16 that rotates around the vertical axis (Z axis) inside the spindle outer cylinder 15 extending in the vertical direction, and also the machining tool. The work WK is ultrasonically processed by applying ultrasonic vibration to 19.

In FIG. 1, the automatic exchange 21 is provided on the side of the vertical support portion 13 (on one side in the X-axis direction). The automatic exchange 21 includes a plurality of chuck holding portions 91 for holding the replacement ultrasonic milling chuck 18 in a suspended state, and an exchange arm 92 having hook portions 92F at both ends.

Each chuck holding portion 91 detachably holds the replacement ultrasonic milling chuck 18 by a chuck holding mechanism (not shown) provided inside. The exchange arm 92 can perform horizontal turning operation and elevating operation. The replacement arm 92 has two hook portions 92F provided at both ends, a groove-shaped portion 41M included in the ultrasonic milling chuck 18 attached to the spindle spindle 16, and a replacement ultrasonic wave held by the chuck holding portion 91. By simultaneously locking to both the groove-shaped portion 41M included in the milling chuck 18, the two ultrasonic milling chucks 18 to be replaced can be gripped at the same time.

When the ultrasonic milling chuck 18 attached to the spindle spindle 16 is replaced with the replacement ultrasonic milling chuck 18, the replacement arm 92 rotates horizontally to grip the two ultrasonic milling chucks 18 to be replaced. do. After gripping the two ultrasonic milling chucks 18, the exchange arm 92 moves downward (arrow A1 shown in FIG. 10A) to move the two ultrasonic milling chucks 18 to the spindle spindle 16 and the chuck holding portion 91. Remove from each (FIG. 10 (a)). At this time, the protrusion 61 of the ultrasonic milling chuck 18 attached to the spindle spindle 16 is separated from the protrusion engagement portion 71W of the detent block 71 provided on the spindle outer cylinder 15, and the two feeding pins 72 are outside the spindle. It separates from the two power feeding sockets 74 included in the cylinder 15.

The exchange arm 92 rotates 180 degrees after removing the two ultrasonic milling chucks 18 from the spindle spindle 16 and the chuck holding portion 91 (arrow R shown in FIG. 10B), and the two ultrasonic milling chucks 18. The positions of are exchanged (FIG. 10 (b)). Then, the exchange arm 92 moves upward, and two ultrasonic milling chucks 18 are attached to each of the spindle spindle 16 and the chuck holding portion 91 (arrow A2 shown in FIG. 10C). At this time, the protrusion 61 of the ultrasonic milling chuck 18 attached to the spindle spindle 16 engages with the detent block 71 provided on the spindle outer cylinder 15, and the two power supply pins 72 are the two power supplies provided on the spindle outer cylinder 15. It is fitted into the socket 74 (FIG. 10 (c)). This completes the replacement work of the ultrasonic milling chuck 18.

As described above, in the processing apparatus 1 of the present embodiment, the ultrasonic vibrator 44 that applies ultrasonic vibration to the processing tool 19 is provided not on the spindle spindle 16 but on the ultrasonic milling chuck 18. For this reason, ultrasonic processing is performed simply by preparing a ultrasonic milling chuck 18 having a built-in ultrasonic transducer 44 while modifying the lower end of the spindle outer cylinder 15 of a general machining center to provide a power supply block 73 connected to a power source. It is possible to manufacture the processing apparatus 1 according to the present embodiment. Further, in the processing apparatus 1 according to the present embodiment, the shank 41 is fitted into the shank fitting hole 16H of the spindle spindle 16 to connect and disconnect the slip ring 66 as a feeding unit for supplying power to the ultrasonic transducer 44 to the power supply. Since the milling chuck main body 31 can be attached to the spindle spindle 16 and the milling chuck main body 31 can be removed from the spindle spindle 16, the ultrasonic milling chuck 18 can be automatically replaced. Therefore, according to the processing apparatus 1 (ultrasonic milling chuck 18) in the present embodiment, it is possible to perform ultrasonic processing on the work WK with an inexpensive configuration based on a general machining center.

Further, in the processing apparatus 1 of the present embodiment, power is supplied to the ultrasonic vibrator 44 provided in the milling chuck main body 31 which is a rotating body through a contact type power feeding unit (slip ring 66). There is. It is possible to make the feeding part non-contact type, but the non-contact type feeding part has a complicated structure and is expensive. Since the processing apparatus 1 in the present embodiment employs an inexpensive contact-type feeding unit, it is advantageous in terms of cost, and the processing apparatus 1 can be configured at low cost in this respect as well.

Although the embodiments of the present invention have been described so far, the present invention is not limited to the above-mentioned ones, and various modifications and the like are possible. For example, the shape of the milling chuck main body 31 and the shape of the main body support portion 32 in the ultrasonic milling chuck 18 do not necessarily have to be the same as those shown in the above-described embodiment. Further, the configurations of the chuck side terminal and the power supply side terminal may not be the same as those shown in the above-described embodiment, and the feeding portion is not limited to the slip ring. Further, the configuration of the automatic exchange 21 shown in the above-described embodiment is an example, and may have other configurations. Further, in the above-described embodiment, the processing tool is a milling tool for performing milling processing, but the processing tool is not limited to milling processing and is a tool for performing other processing (for example, for performing drilling processing). It may be a drilling tool, etc.).

Provided are a processing device capable of performing ultrasonic processing on a work with an inexpensive configuration based on a general machining center, and an ultrasonic tool chuck used in this processing device.

1 Processing equipment 15 Spindle outer cylinder 16 Spindle spindle 18 Ultrasonic milling chuck (ultrasonic tool chuck)
19 Machining tool 31 Milling chuck body (tool chuck body)
32 Main body support 41 Shank 43 Booster 44 Ultrasonic oscillator 45 Feeding rotor 61 Protrusion 64 Feeding brush 66 Slip ring (feeding part)
71W Protrusion engagement part 72 Power supply pin (chuck side terminal)
74 Power supply socket (power supply side terminal)

The machining apparatus of the present invention includes a spindle spindle that rotates around an up-and-down axis inside a spindle outer cylinder extending in the vertical direction, and an ultrasonic tool chuck that connects a machining tool to the lower end of the spindle spindle. A processing device that rotates the processing tool and applies ultrasonic vibration to the processing tool to perform ultrasonic processing of the work. The ultrasonic tool chuck is a shank attached to the lower end of the spindle spindle. A tool chuck body provided with a booster provided at the bottom of the shank to which the processing tool is connected, an ultrasonic vibrator provided inside the shank and applying ultrasonic vibration to the processing tool via the booster, and a tool chuck body. It is located below the spindle outer cylinder and includes a main body support portion that supports the rotation of the tool chuck main body in a state where relative rotation with respect to the spindle outer cylinder is restricted, and the main body support portion is the ultrasonic transducer. Has a power supply unit for supplying electricity to the power supply unit and a chuck side terminal connected to the power supply unit, and is provided at the chuck side terminal and the lower end of the spindle outer cylinder by the operation of attaching the tool chuck body to the spindle spindle. By the operation of connecting the power supply side terminal and removing the tool chuck main body from the spindle spindle, the connection between the chuck side terminal and the power supply side terminal is released, and the main body support portion is a protrusion extending upward. The tool chuck main body is attached to the spindle spindle, so that the protrusion is engaged with the protrusion engagement portion provided at the lower end of the spindle outer cylinder, and the main body support portion is attached to the spindle outer cylinder. relative rotation Ru is restricted.

In the ultrasonic tool chuck of the present invention, the machining tool is rotated by the spindle spindle that rotates around the vertical axis inside the spindle outer cylinder extending in the vertical direction, and the machining tool is subjected to ultrasonic vibration to perform ultrasonic machining of the work. An ultrasonic tool chuck that connects the machining tool to the lower end of the spindle spindle, a shank attached to the lower end of the spindle spindle, and a shank provided at the lower end of the shank to connect the machining tool. A tool chuck body provided inside the booster and the shank and provided with an ultrasonic vibrator that applies ultrasonic vibration to the processing tool via the booster, and a spindle outer cylinder located below the spindle outer cylinder. It is provided with a main body support portion that supports the rotation of the tool chuck main body in a state where the relative rotation with respect to the tool chuck is restricted, and the main body support portion includes a feeding portion that supplies electricity to the ultrasonic transducer and a chuck connected to the feeding portion. By the operation of having the side terminal and attaching the tool chuck main body to the spindle spindle, the chuck side terminal and the power supply side terminal provided at the lower end of the spindle outer cylinder are connected, and the tool chuck main body is said. By the operation of being removed from the spindle spindle, the connection between the chuck side terminal and the power supply side terminal is released , the main body support portion has a protrusion extending upward, and the tool chuck main body is attached to the spindle spindle. the protrusions by the operation is engaged with the projection engaging portion provided at a lower end of the spindle outer cylinder to be, the body relative rotation with respect to said spindle outer tube of the support portion Ru is restricted.

Claims (5)

The spindle spindle that rotates around the vertical axis inside the spindle outer cylinder extending in the vertical direction and an ultrasonic tool chuck that connects the machining tool to the lower end of the spindle spindle are provided, and the spindle spindle is rotated to form the machining tool. It is a processing device that ultrasonically processes the work by applying ultrasonic vibration to the processing tool while rotating the spindle.
The ultrasonic tool chuck is
A shank attached to the lower end of the spindle spindle, a booster provided at the lower part of the shank to which the machining tool is connected, and a booster provided inside the shank to apply ultrasonic vibration to the machining tool via the booster. A tool chuck body equipped with a sound wave oscillator and
It is located below the spindle outer cylinder and is provided with a main body support portion that supports the rotation of the tool chuck main body in a state where the relative rotation with respect to the spindle outer cylinder is restricted.
The main body support portion has a feeding portion for supplying electricity to the ultrasonic vibrator and a chuck side terminal connected to the feeding portion.
By the operation of attaching the tool chuck body to the spindle spindle, the chuck side terminal and the power supply side terminal provided at the lower end of the spindle outer cylinder are connected, and the tool chuck body is removed from the spindle spindle. A processing device that disconnects the chuck side terminal from the power supply side terminal. The main body support portion has a protrusion extending upward, and the protrusion is engaged with a protrusion engagement portion provided at the lower end of the spindle outer cylinder by the operation of attaching the tool chuck main body to the spindle spindle. The processing apparatus according to claim 1, wherein the relative rotation of the main body support portion with respect to the spindle outer cylinder is restricted. 1. Or the processing apparatus according to 2. The processing apparatus according to any one of claims 1 to 3, wherein the processing tool is a milling tool that performs milling processing on a work. In a machining apparatus that rotates a machining tool by a spindle spindle that rotates around a vertical axis inside a spindle outer cylinder that extends in the vertical direction and also applies ultrasonic vibration to the machining tool to ultrasonically machine a workpiece, the spindle spindle An ultrasonic tool chuck that connects the processing tool to the lower end.
A shank attached to the lower end of the spindle spindle, a booster provided at the lower part of the shank to which the machining tool is connected, and a booster provided inside the shank to apply ultrasonic vibration to the machining tool via the booster. A tool chuck body equipped with a sound wave oscillator and
It is located below the spindle outer cylinder and is provided with a main body support portion that supports the rotation of the tool chuck main body in a state where the relative rotation with respect to the spindle outer cylinder is restricted.
The main body support portion has a feeding portion for supplying electricity to the ultrasonic vibrator and a chuck side terminal connected to the feeding portion.
By the operation of attaching the tool chuck body to the spindle spindle, the chuck side terminal and the power supply side terminal provided at the lower end of the spindle outer cylinder are connected, and the tool chuck body is removed from the spindle spindle. An ultrasonic tool chuck that disconnects the chuck side terminal from the power supply side terminal.

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