JP2017087315A - Machining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machining device capable of performing both boring and facing even on a component having a complex shape.SOLUTION: A machining device 1 includes: a cylindrical spindle 20; a first driving device 11 that rotates the spindle; a tool holder 30 fixed to the spindle so as to rotate integrally with the spindle; a tip holder 40 that is attached to the tool holder and that holds a tip 41 so that the tip 41 is movable in a radial direction orthogonal to a rotary shaft; a cam mechanism 5 configured to move the tip 41 in the radial direction; a connection member 51 connected to the cam mechanism 5 and configured to extend to the other side across the spindle through the spindle 20 in the direction of the rotary shaft, and move the cam mechanism by reciprocating in the direction of the rotary shaft; and a second driving device 12 disposed on the other side across the spindle and configured to reciprocate the connection member.SELECTED DRAWING: Figure 1

Description

  The technology disclosed herein relates to a processing apparatus.

  Patent Document 1 describes a processing apparatus that processes an inner peripheral surface of a hole of a processing object. The processing apparatus includes a holding cylinder, an operating shaft that is inserted into the holding cylinder so as to be movable in the axial direction, a cutting tool that is supported so as to be movable in the radial direction of the holding cylinder, and an operating shaft. A tool provided with a conversion mechanism is provided between the shaft and the cutting tool and moves the cutting tool in the radial direction of the holding cylinder when the operating shaft is moved. The machining apparatus also includes a spindle head for mounting and rotating the tool on one side in the axial direction of the tool, and a drive for moving the operating shaft to the other side in the axial direction of the tool. Arrange the mechanism. In this processing apparatus, the tool is rotated by the spindle head while the holding cylinder is inserted into the hole of the workpiece. At the same time, the tool is moved in the radial direction of the holding cylinder via the conversion mechanism by moving the operating shaft by the drive mechanism. As a result, the cutting tool protrudes from the outer periphery of the holding cylinder, and the inner surface of the workpiece hole is processed. The processing apparatus described in Patent Document 1 uses a general-purpose processing apparatus.

JP-A-7-124806

  By the way, for example, processing of a part attached to a structural member of an aircraft often has a complicated shape, and since dimensional accuracy is severe, processing may be performed after the component is assembled to the structural member. If processing is to be performed after assembly, processing cannot be performed with the processing apparatus described in Patent Document 1. Because the processing apparatus described in Patent Document 1 has a configuration in which the spindle head is disposed on one side across the table and the drive mechanism is disposed on the other side, the workpiece is placed on the table. This is because it is limited to a simple shape that can be placed so that the hole axis is horizontal.

  In the processing of parts attached to the structural member of an aircraft, the shape of the processing object including the structural member is complicated, so that it is difficult to bring the chip close to the processing position with a general-purpose processing device. For this reason, conventionally, processing of parts attached to such a structural member has been performed manually. However, manual processing has problems that the processing time becomes long and the processing quality is not stable.

  Furthermore, as processing of the parts attached to the structural member, cutting of the inner peripheral surface of the hole provided in the part (that is, boring) and cutting of the plane (flange surface) at the periphery of the hole (that is, facing processing) ) And two types of processing and one part. Conventionally, a machining tool for boring and a machining tool for facing are prepared, and boring and facing are performed for one part while exchanging the machining tools. However, this method has the inconvenience that the processing time becomes longer because the setup time is required.

  The technology disclosed herein has been made in view of the above points, and the purpose of the technology is to allow both boring and facing to be performed on parts having complicated shapes. To provide an apparatus.

The technique disclosed here relates to a processing apparatus, and the processing apparatus includes the following elements. That means
A cylindrical spindle configured to rotate about a rotational axis;
A first drive configured to rotate the spindle;
A tool holder that extends from the spindle to one side along the rotational axis and is fixed to the spindle so as to rotate integrally with the spindle;
A chip holder attached to the tool holder and configured to hold the chip movably in a radial direction perpendicular to the rotation axis so that a distance from the rotation axis to the tip of the chip changes. ,
A cam mechanism configured to engage the tip holder and move the tip in the radial direction;
It is connected to the cam mechanism, extends through the spindle in the direction of the rotation axis, extends to the other side across the spindle, and is configured to move the cam mechanism by reciprocating in the direction of the rotation axis. A connected member,
A second drive device disposed on the other side across the spindle and configured to reciprocate the coupling member;
It has.

  According to this configuration, the chip for processing the workpiece is held by the chip holder and the tool holder. When the tool holder rotates integrally with the spindle, the chip rotates about the rotation axis, thereby cutting the workpiece.

  The chip is held by the chip holder so that the distance from the rotation axis to the tip of the chip changes. By adjusting the position of the tip, processing of the inner peripheral surface of the hole provided in the workpiece (that is, boring) and processing of the plane at the periphery of the hole of the workpiece (that is, facing processing) It becomes possible to do both.

  The tip moves in the radial direction by a cam mechanism that engages with the tip holder. Specifically, the connecting member connected to the cam mechanism is reciprocated by the second driving device, so that the chip reciprocates in the radial direction together with the chip holder.

  Here, the connecting member passes through the spindle in the direction of the rotation axis and extends to the other side (that is, the side opposite to the tool holder side) sandwiching the spindle. The second drive device that reciprocates the connecting member is disposed on the other side across the spindle.

  As described above, the processing device having the above-described configuration includes the second driving device that moves the chip in the radial direction, the spindle and the first driving device that rotates the spindle in the direction of the rotation axis that sandwiches the workpiece. Placed on the same side. For this reason, in this processing apparatus, it is possible to bring the chip closer to the processing object from one side in the rotation axis direction. For this reason, this processing apparatus can perform boring processing and facing processing even on a processing object having a complicated shape.

  Two tip holders are attached to the tool holder at a predetermined interval in the rotation axis direction, and the chips held by the two chip holders are facing each other in the rotation axis direction. Also good.

  As described above, this processing apparatus can perform boring processing and facing processing on a processing target object by bringing the tip closer to the processing target object from one side in the rotation axis direction.

  On the other hand, if there are machining points on the workpiece on one side and the other side in the direction of the rotation axis, attach two tips to the tool holder so as to face the direction of the rotation axis. Thus, one of the two chips enables processing of a portion on the one side in the rotation axis direction of the processing object, and processing of the other side portion of the processing target in the rotation axis direction can be performed by the other chip. It becomes possible. As a result, this processing apparatus can further reduce the processing time.

  The cam mechanism is tilted at a predetermined angle with respect to the rotation shaft and fixed to the connecting member, and is fixed to the tip holder and engaged with the tilt guide rail, thereby And a guide block configured to reciprocate along the inclined guide rail.

  Thus, when the connecting member moves in the rotation axis direction, the inclined guide rail moves in the rotation axis direction. With the movement of the inclined guide rail, the guide block engaged with the inclined guide rail relatively moves along the inclined guide rail. Thereby, the position of the radial direction orthogonal to the rotating shaft of a guide block changes. As a result, the radial position of the chip holder to which the guide block is fixed changes, and accordingly, the distance between the tip of the chip and the rotation shaft changes.

  The cam mechanism having this configuration is configured to convert the movement of the connecting member in the rotation axis direction into the movement of the chip holder in the radial direction. If the inclination angle of the inclined guide rail with respect to the rotation axis direction is α, the distance between the tip of the tip and the rotation axis changes by L × tan α when the connecting member moves by L in the rotation axis direction. The cam mechanism having this configuration can finely feed the tip in the radial direction, thereby improving the processing accuracy.

  Here, a mechanism using a pinion and a rack is conventionally known as a mechanism for moving the chip in the radial direction orthogonal to the rotation axis. This conventional mechanism is a mechanism that converts the movement of the rack that moves in the direction of the rotation axis into the movement of the rack that moves in the radial direction via the pinion, and the amount of movement of the chip depends on the back and forth of the rack and the pinion. Limited by rush and gear accuracy. That is, the conventional mechanism using the pinion and the rack cannot finely feed the tip in the radial direction. On the other hand, the cam mechanism using the inclined guide rail disclosed herein has an advantage that the tip can be finely fed in the radial direction as described above.

  In addition, the cam mechanism including the inclined guide rail can obtain high rigidity with respect to the cutting resistance when the workpiece is being processed. This is also advantageous in increasing the processing accuracy.

  The processing device includes a base on which at least the spindle, the first drive device, and the second drive device are installed, and a third drive configured to reciprocate the base in the rotation axis direction. And a device.

  By doing so, it is possible to move the chip in the direction of the rotation axis by moving the base in the direction of the rotation axis. As a result, it is possible to process a workpiece having a complicated shape, and the processing range for the workpiece is expanded. In addition, the processing time can be shortened.

  As described above, according to the processing apparatus, the connecting member that moves the cam mechanism extends through the spindle in the direction of the rotation axis and extends to the other side across the spindle to move the tip in the radial direction. Since the second driving device is disposed on the same side as the spindle and the first driving device for rotating the spindle with respect to the direction of the rotation axis sandwiching the workpiece, the second driving device is arranged in the direction of the rotation axis with respect to the workpiece. It becomes possible to perform boring and facing by bringing the chip closer from one side. Therefore, it is possible to perform both boring and facing even for a component having a complicated shape.

FIG. 1 is a plan sectional view showing the entire processing apparatus. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is an enlarged plan sectional view showing a tool holder portion of the processing apparatus. 4 is a cross-sectional view taken along line IV-IV in FIG. 5 is a cross-sectional view taken along line VV in FIG.

  Hereinafter, an embodiment of a processing apparatus disclosed herein will be described with reference to the drawings. In addition, the processing apparatus shown below is an example. 1 and 2 show the entire processing apparatus 1. This processing apparatus 1 is configured to be capable of performing both boring processing for processing an inner peripheral surface of a hole provided in advance in a processing object and facing processing for processing a plane at the periphery of the hole. Yes.

  The processing apparatus 1 includes a cylindrical spindle 20. The cylindrical spindle 20 is disposed so as to be coaxial with the rotation axis X. The spindle 20 is held by a bearing. As a result, the spindle 20 rotates about the rotation axis X. The spindle 20 is placed on the base plate 81.

  In the spindle 20, a toothed pulley 21 is attached to the other end portion in the direction of the rotation axis X (that is, the right end portion in FIG. 1 and FIG. 2). The toothed pulley 21 is a driven pulley. The pulley 21 is connected via a timing belt 23 to a second toothed pulley 22 that is a driving pulley. The second toothed pulley 22 is fixed to the shaft of the motor 24. The motor 24 is offset with respect to the spindle 20, that is, the rotation axis X.

  When the shaft of the motor 24 rotates, the toothed pulley 21 is rotated by the timing belt 23, and the spindle 20 is rotated accordingly. The toothed pulley 21, the second toothed pulley 22, the timing belt 23, and the motor 24 constitute a first driving device 11 that rotates the spindle 20.

  In the spindle 20, a tool holder 30 is fixed to one end portion in the direction of the rotation axis X (that is, the left end portion in FIG. 1 and FIG. 2). The tool holder 30 extends to one side along the rotation axis X. The tool holder 30 fixed to the spindle 20 rotates around the rotation axis X integrally with the spindle 20.

  As shown in FIG. 5, the tool holder 30 is formed in a substantially semicircular shape whose cross section is configured by cutting a part of a circle coaxial with the rotation axis X. In the tool holder 30, two concave portions 31, 31 are formed in the central portion in the direction of the rotation axis X as shown in an enlarged manner in FIGS. The two recesses 31, 31 are spaced apart from each other in the direction of the rotation axis X. As shown in FIGS. 2 and 4, each recess 31 opens in the radial direction orthogonal to the rotation axis X direction. A chip holder 40 that holds the chip 41 is attached to each recess 31.

  As shown in FIGS. 3 to 5, the chip holder 40 is configured as a rectangular plate having a trapezoidal cross section. The chip 41 is attached to the distal end of the chip holder 40 in the radial direction. Two chips 41 arranged with a gap in the direction of the rotation axis X are attached to a chip holder 40 so as to face each other.

  In each recess 31 of the tool holder 30, a pair of guides 32, 32 that engage with the chip holder 40 are provided on both sides in the direction of the rotation axis X across the chip holder 40. The pair of guides 32 and 32 guide the chip holder 40 so as to reciprocate in the radial direction. As shown by a two-dot chain line in FIG. 3, the tip holder 40 and the tip 41 protrude from the concave portion 31 of the tool holder 30 outward in the radial direction, and a state in which the tip holder 40 and the tip 41 substantially fit in the concave portion 31 of the tool holder 30. Switch to

  The tip holder 40 reciprocates in the radial direction by the cam mechanism 5. The cam mechanism 5 is moved by the connecting member 51. Although the connection member 51 will be described in detail later, it extends in the direction of the rotation axis X.

  The cam mechanism 5 includes an inclined guide rail 52 fixed to the connecting member 51, and a guide block 53 fixed to each chip holder 40 and engaged with the inclined guide rail 52. Two inclined guide rails 52 are fixed to the connecting member 51, and the two inclined guide rails 52 are inclined at the same predetermined angle with respect to the rotation axis X, respectively. The direction of inclination of the inclined guide rail 52 is such that the other side of the rotation axis X direction (the right side in FIG. 1 and 3) is located in the protruding direction of the chip 41 with respect to one side (the left side in FIG. 1 and 3). It is a direction to do.

  The guide block 53 is engaged with each inclined guide rail 52 individually. Each guide block 53 is configured to be capable of relative movement along each inclined guide rail 52. As the inclined guide rail 52 and the guide block 53, for example, a commercially available slide guide can be used.

  The connecting member 51 extends toward the other side in the rotation axis X direction. As shown in FIGS. 1 and 2, the other end of the connecting member 51 passes through the cylindrical spindle 20 and is located on the other side in the direction of the rotation axis X across the spindle 20. The connecting member 51 includes a plate portion 511 positioned on one side of the rotation axis X with respect to the spindle 20 and a portion inserted into the spindle 20, and is positioned on the other side of the rotation axis X with respect to the spindle 20. It is comprised from the round bar part 512. FIG. The plate portion 511 and the round bar portion 512 are coupled to each other.

  The plate portion 511 is disposed in parallel with the tool holder 30. The tool holder 30 has one end side (that is, the left end side of the paper surface in FIGS. 1 and 2) and the other end side (that is, the right end side of the paper surface in FIGS. 1 and 2) so as to sandwich the two concave portions 31 and 31. A guide rail 33 extending in the direction of the rotation axis X is attached to each. Two guide blocks 54 that engage with the two guide rails 33 are attached to the plate portion 511. Each of the two guide blocks 54, 54 reciprocates in the direction of the rotation axis X along the guide rail 33 of the tool holder 30. As the guide rail 33 and the guide block 54, for example, a commercially available slide guide can be used.

  The round bar portion 512 of the connecting member 51 is disposed coaxially with the rotation axis X inside the spindle 20 and on the other side in the direction of the rotation axis X across the spindle 20. The other end portion of the round bar portion 512 is rotatably supported by a bearing holder 55 having a bearing. Thus, the connecting member 51 can rotate about the rotation axis X together with the spindle 20 and the tool holder 30 and can reciprocate in the direction of the rotation axis X. Since the tool holder 30 does not reciprocate in the rotation axis X direction, the connecting member 51 moves in the rotation axis X direction relative to the tool holder 30.

  On the other side of the rotation axis X direction with the spindle 20 interposed therebetween, a second driving device 12 that reciprocates the connecting member 51 in the rotation axis X direction is disposed. The second drive device 12 includes a servo motor 61 and a ball screw mechanism 63 including a ball screw 62 attached to the output shaft of the servo motor 61. The second driving device 12 is fixed to the base plate 81 described above.

  The ball screw mechanism 63 has a ball screw base 64 that reciprocates in the rotation axis X direction. A bearing holder 55 that rotatably supports the other end of the connecting member 51 is fixed to the ball screw base 64. When the servo motor 61 is driven, the ball screw base 64 reciprocates in the direction of the rotation axis X via the ball screw 62. For this reason, the connecting member 51 supported by the ball screw base 64 reciprocates in the rotation axis X direction.

  When the connecting member 51 moves to one side in the rotation axis X direction (that is, the left side in FIG. 1), the inclined guide rail 52 moves to one side in the rotation axis X direction. Since the guide block 53 engaged with the inclined guide rail 52 moves relative to the inclined guide rail 52 to the other side in the rotation axis X direction, the guide block 53 moves in the radial direction. To come. In this way, the chip holder 40 to which the guide block 53 is fixed also moves outward in the radial direction (above the paper surface in FIG. 3), and as shown by a two-dot chain line in FIG. The distance from the rotation axis X is changed (that is, the distance becomes longer).

  On the contrary, when the connecting member 51 moves to the other side in the direction of the rotation axis X (that is, the right side in FIGS. 1 to 4), the inclined guide rail 52 moves to the other side in the direction of the rotation axis X. The guide block 53 engaged with the inclined guide rail 52 moves relative to the inclined guide rail 52 to one side in the rotation axis X direction. Will also move to. Thus, the chip holder 40 to which the guide block 53 is fixed also moves inward in the radial direction (downward in the drawing in FIG. 3), and as shown by the solid line in FIG. The distance to X is changed (that is, the distance is shortened).

  A cylindrical cover 70 is attached to the spindle 20. The cover 70 extends from the spindle 20 toward one side in the rotation axis X direction. The cover 70 accommodates the tool holder 30, the plate portion 511 of the connecting member 51, and the cam mechanism 5. In the cover 70, an opening 71 is formed at the center in the direction of the rotation axis X. The opening 71 is provided corresponding to the chip holder 40. As described above, when the chip holder 40 reciprocates in the radial direction, the chip 41 protrudes out of the cover 70 through the opening 71 and fits in the cover 70 through the opening 71.

  As shown in FIG. 2, the base plate 81 on which the spindle 20 and the second driving device 12 are placed is configured to reciprocate in the direction of the rotation axis X by the third driving device 13. As the base plate 81 moves in the direction of the rotation axis X, the spindle 20, the tool holder 30, the chip holder 40, the cam mechanism 5, the connecting member 51, and the like move in the direction of the rotation axis X. Therefore, the tip 41 can reciprocate in the direction of the rotation axis X.

  The third driving device 13 includes a slide mechanism 82 that reciprocates the base plate 81 in the direction of the rotation axis X, and a second servo motor 83 that serves as a driving source for moving the base plate 81.

  Although not shown, the servo motor 61, the second servo motor 83, and the motor 24 are each controlled by the NC device based on NC data corresponding to the workpiece. As a result, a predetermined boring process and / or facing process is performed on the workpiece.

  As described above, the processing apparatus 1 includes the cylindrical spindle 20 configured to rotate around the rotation axis X, the first driving apparatus 11 configured to rotate the spindle 20, and the spindle. A tool holder 30 that extends to one side along the rotation axis X from 20 and is fixed to the spindle 20 so as to rotate integrally with the spindle 20, and is attached to the tool holder 30 and extends from the rotation axis X to the tip of the chip 41. The tip holder 40 is configured to hold the tip 41 movably in the radial direction orthogonal to the rotation axis X so that the distance of the tip 41 changes. A cam mechanism 5 configured to move the spindle 2 and the cam mechanism 5 connected to the cam mechanism 5 and penetrating the spindle 20 in the direction of the rotation axis X. And a connecting member 51 configured to move the cam mechanism 5 by reciprocating in the direction of the rotation axis X and extending to the other side across the spindle 20 and disposed on the other side across the spindle 20. And a second driving device 12 configured to reciprocate 51.

  With this configuration, the chip 41 is held by the chip holder 40 and the tool holder 30. As the tool holder 30 rotates integrally with the spindle 20, the tip 41 rotates about the rotation axis X, thereby cutting the workpiece.

  More specifically, as shown in FIG. 3, the tool holder 30 covered with the cover 70 is inserted into the hole provided in the workpiece W, and the second drive device 12 passes the cam mechanism 5 through the cam mechanism 5. Thus, the tip position of the tip 41 is adjusted, and the position of the tip 41 in the direction of the rotation axis X is adjusted by the third driving device 13. At the same time, if the tool holder 30 together with the spindle 20 is rotated around the rotation axis X by the first driving device 11, the inner peripheral surface of the workpiece W can be processed by the tip 41. In addition, the same tip 41 can also process a plane at the periphery of the hole of the workpiece W. Thus, since this processing apparatus 1 can perform both boring and facing with the same chip 41, both boring and facing are performed on one workpiece W. When performing the above, the time required for setup is omitted, and the machining time can be greatly shortened.

  In the processing apparatus 1, the connecting member 51 extends through the spindle 20 in the rotation axis direction to the other side across the spindle 20, and a second driving device 12 that reciprocates the connecting member 51 is provided. The other side of the spindle 20 is disposed. Thereby, the 2nd drive device 12 is arrange | positioned with the 1st drive device 11 on the same side about the direction of the rotating shaft X which pinched | interposed the workpiece W. FIG. For this reason, in this processing apparatus 1, the tip is brought closer to the workpiece W from one side in the rotation axis X direction (in FIG. 3, the tip 41 is brought closer to the workpiece W from the right side of the drawing) Boring and facing can be performed on the workpiece W.

  Thereby, for example, it is possible to perform boring processing and facing processing by the processing apparatus 1 even on a workpiece W having a complicated shape such as a component attached to a structural component of an aircraft.

  Further, in this processing apparatus 1, two chip holders 40 are attached to the tool holder 30 at a predetermined interval in the rotation axis X direction, and the chips 41 held by the two chip holders 40 are respectively , Facing the rotation axis X direction.

  With this configuration, one chip 41 of the two chips 41 (the chip 41 on the left side of the paper in FIG. 3) enables processing of a portion on one side of the processing object W in the direction of the rotation axis X and the other of the other chips 41. The tip 41 (the tip 41 on the right side in FIG. 3) enables processing of the other side of the workpiece W in the direction of the rotation axis X. As described above, the position of the tip 41 in the direction of the rotation axis X is adjusted by the third driving device 13.

  In addition, the cam mechanism 5 of the processing apparatus 1 is tilted at a predetermined angle with respect to the rotation axis X and is fixed to the connecting member 51, and is fixed to the chip holder 40, and the tilt guide rail 52 is fixed. , And a guide block 53 configured to reciprocate along the inclined guide rail 52.

  With this configuration, when the connecting member 51 moves in the rotation axis X direction, the inclined guide rail 52 moves in the rotation axis X direction, and accordingly, the guide block 53 engaged with the inclined guide rail 52 is inclined. Since the relative movement is made in the opposite direction along the guide rail 52, the radial position of the guide block 53 perpendicular to the rotation axis X changes. As a result, the radial position of the chip holder 40 to which the guide block 53 is fixed changes, and accordingly, the distance between the tip of the chip 41 and the rotation axis X changes.

  Since the cam mechanism 5 having this configuration is configured to convert the movement of the connecting member 51 in the rotation axis X direction into the movement of the tip holder 40 in the radial direction, the inclination angle of the inclined guide rail 52 with respect to the rotation axis X direction. Is α, and the distance between the tip of the tip 41 and the rotation axis X changes by L × tanα when the connecting member 51 moves by L in the direction of the rotation axis X. Therefore, the tip 41 can be finely fed in the radial direction by the control of the servo motor 61, and the processing accuracy can be improved. This is an advantageous effect that cannot be realized by a known mechanism using a pinion and a rack. The maximum radial movement distance of the tip 41 varies depending on the inclination angle of the inclination guide rail 52 and the movement distance of the connecting member 51 in the direction of the rotation axis X. The maximum movement distance in the radial direction of the tip 41 may be set as appropriate from the inclination angle and the movement distance in the direction of the rotation axis X.

  In addition, the cam mechanism including the inclined guide rail can obtain high rigidity with respect to the cutting resistance when the workpiece is being processed. This is also advantageous in increasing the processing accuracy.

  Further, the processing apparatus 1 is configured to reciprocate the base plate 81 in the direction of the rotation axis X with a base plate 81 on which at least the spindle 20, the first driving device 11, and the second driving device 12 are installed. And the third driving device 13, the tip 41 can be moved in the direction of the rotation axis X, and the workpiece W having a complicated shape can be processed, and the workpiece can be processed. The processing range is expanded. Further, the processing time can be shortened.

  In the above configuration, the processing apparatus 1 includes the two chips 41, but the processing apparatus 1 may include only one chip 41.

DESCRIPTION OF SYMBOLS 1 Processing apparatus 11 1st drive device 12 2nd drive device 13 3rd drive device 20 Spindle 30 Tool holder 40 Tip holder 41 Tip 5 Cam mechanism 51 Connecting member 52 Inclined guide rail 53 Guide block 81 Base plate (base)
X rotation axis

Claims (4)

A cylindrical spindle configured to rotate about a rotational axis;
A first drive configured to rotate the spindle;
A tool holder that extends from the spindle to one side along the rotational axis and is fixed to the spindle so as to rotate integrally with the spindle;
A chip holder attached to the tool holder and configured to hold the chip movably in a radial direction perpendicular to the rotation axis so that a distance from the rotation axis to the tip of the chip changes. ,
A cam mechanism configured to engage the tip holder and move the tip in the radial direction;
It is connected to the cam mechanism, extends through the spindle in the direction of the rotation axis, extends to the other side across the spindle, and is configured to move the cam mechanism by reciprocating in the direction of the rotation axis. A connected member,
A second drive device disposed on the other side across the spindle and configured to reciprocate the coupling member;
A processing device equipped with. The processing apparatus according to claim 1,
Two tip holders are attached to the tool holder at a predetermined interval in the rotation axis direction,
A processing apparatus in which the chips held by the two chip holders face each other in the rotation axis direction. In the processing apparatus according to claim 1 or 2,
The cam mechanism is
An inclined guide rail that is inclined at a predetermined angle with respect to the rotation axis and fixed to the connecting member;
And a guide block configured to reciprocate along the inclined guide rail by being fixed to the chip holder and engaging with the inclined guide rail. In the processing apparatus of any one of Claims 1-3,
A base on which at least the spindle, the first driving device, and the second driving device are installed;
And a third driving device configured to reciprocate the base in the direction of the rotation axis.

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