WO2023163126A1 - Cutting machine - Google Patents

Abstract

A cutting machine 10 comprises: a holding device 20 that holds a workpiece 1; a cutting device 50 that cuts the workpiece 1; a processing chamber 120 that houses the holding device 20 and is defined by a plurality of wall parts, including a top wall 120U disposed above the holding device 20; and a first air-blowing device 93 that is provided with a first nozzle 93N for spraying air along the top wall 120U of the processing chamber 120.

Description

cutting machine

The present invention relates to cutting machines.

Conventionally, there has been known a cutting machine that produces, for example, a dental molding by cutting an object to be cut. In the cutting of an object to be cut by a cutting machine, cutting dust is generated from the object to be cut in the vicinity of the cutting edge of the cutting tool. For this reason, some cutting machines are equipped with an air blower for blowing off the cutting powder from the object to be cut from the cutting tool. For example, Patent Document 1 discloses a machining space partitioned by a wall, a holding part provided in the machining space for holding a workpiece, a cutting part provided in the machining space for cutting the workpiece, and a workpiece and an air blow nozzle for injecting air toward a processing tool in the vicinity of a processing location.

JP 2013-121466 A

For example, when an object to be cut is cut by a cutting machine such as that described in Patent Document 1, cutting dust from the object to be cut adheres to the machining chamber. Cutting dust can also adhere to the top wall arranged above the holding device for the workpiece. However, with a cutting machine such as that described in Patent Literature 1, it is difficult to remove cutting powder adhering to the ceiling wall of the machining chamber. If the cutting powder adheres to the ceiling wall of the processing chamber, for example, there is a risk that the cutting powder will fall onto the holding device, causing problems such as the dropped cutting powder being caught in the holding device.

The present invention has been made in view of such problems, and its object is to provide a cutting machine that can effectively remove cutting powder adhering to the ceiling wall of the machining chamber.

The cutting machine disclosed herein is partitioned by a holding device that holds an object to be cut, a cutting device that cuts the object to be cut, and a plurality of walls including a top wall arranged above the holding device. and a first air blow device having a first nozzle for injecting air along the ceiling wall of the processing chamber.

According to the above cutting machine, the air jetted from the first nozzle flows along the ceiling wall of the machining chamber. Therefore, it is possible to effectively remove the cutting powder adhering to the ceiling wall of the processing chamber.

1 is a perspective view of a cutting machine according to one embodiment; FIG. FIG. 4 is a plan view of a workpiece and an adapter; It is a longitudinal cross-sectional view of the cutting machine seen from the left. It is a vertical cross-sectional view of the cutting machine seen from the right side. It is a top view of a work holder. FIG. 4 is a vertical cross-sectional view showing the cutting machine during replacement of the adapter; FIG. 4 is a perspective view of a cutting device chamber and a drive device chamber; It is a top view of a tool stocker. FIG. 4 is a partially broken side view of the vicinity of the lower end of the main shaft; FIG. 4 is a side view of the vicinity of the tip of the cutting device when the cutting tool is replaced; It is a block diagram of a cutting machine. Figure 3 is a flow chart of the overall process; 4 is a flowchart of work cleaning. FIG. 4 is a side view showing the work holder during work cleaning; FIG. 4 is a plan view of the work holder showing the procedure of work cleaning; It is a flow chart of processing chamber cleaning. It is a longitudinal cross-sectional view of the cutting machine during cleaning of the processing chamber.

A cutting machine according to one embodiment will be described below with reference to the drawings. It should be noted that the embodiments described herein are, of course, not intended to limit the invention. Further, members and portions having the same function are denoted by the same reference numerals, and overlapping descriptions are appropriately omitted or simplified.

[Configuration of cutting machine]
FIG. 1 is a perspective view of a cutting machine 10 according to one embodiment. In the following description, when the cutting machine 10 is viewed from the front, the side away from the cutting machine 10 is defined as the front, and the side closer to the cutting machine 10 is defined as the rear. Left, right, top, and bottom mean left, right, top, and bottom, respectively, when the cutting machine 10 is viewed from the front. References F, Rr, L, R, U, and D in the drawings mean front, rear, left, right, up, and down, respectively.

The cutting machine 10 according to this embodiment is a cutting machine that cuts a disk-shaped workpiece held by an adapter. FIG. 2 is a plan view of the workpiece 1 and the adapter 5. FIG. Here, the cutting machine 10 cuts the workpiece 1 to produce dental moldings such as crowns, bridges, copings, inlays, onlays, veneers, custom abutments and other prosthetic crowns, and artificial teeth. , denture base, etc. The cutting machine 10 according to this embodiment is a dry cutting machine that does not use coolant.

The workpiece 1 is made of, for example, resins such as PMMA, PEEK, glass fiber reinforced resin, hybrid resin, etc., ceramic materials such as glass ceramics and zirconia, metal materials such as cobalt chromium sinter metal, wax, gypsum, and the like. there is When zirconia is used as the material of the object 1 to be cut, for example, semi-sintered zirconia is used. The object to be cut 1 is a plate-like object to be cut having two opposing surfaces. Here, the shape of the object 1 to be cut is disc-shaped. However, the object 1 to be cut may have another shape, such as a block shape (for example, a cube shape or a rectangular parallelepiped shape). Below, the two opposing surfaces of the object 1 to be cut are also referred to as a first surface 1A and a second surface 1B, respectively. The second surface 1B is the back surface of the first surface 1A. The distinction between the first surface 1A and the second surface 1B is for convenience, and in the present embodiment, the first surface 1A and the second surface 1B of the workpiece 1 before machining are the same. However, the first surface 1A and the second surface 1B of the workpiece 1 before machining may be configured to be distinguishable.

The adapter 5 holds the disc-shaped object 1 to be cut. Here, the adapter 5 is a plate-like adapter in which a substantially circular insertion hole 5a corresponding to the object 1 to be cut is formed in the center. The object 1 to be cut is held by the adapter 5 by being inserted into the insertion hole 5a. The object 1 to be cut is accommodated in the cutting machine 10 while being held by the adapter 5, and processed.

As shown in FIG. 1, the cutting machine 10 has a box-shaped housing 11 . FIG. 3 is a longitudinal sectional view of the cutting machine 10 viewed from the left. FIG. 4 is a longitudinal sectional view of the cutting machine 10 as seen from the right side. As shown in FIG. 1, the inside of the housing 11 includes a processing chamber 120 (see also FIG. 3) in which a work holder 20 holding the adapter 5 is accommodated, and a holder moving device 30 (see FIG. 4) for moving the work holder 20. ), a changer chamber 170 in which a workpiece changer 70 is accommodated, and a tool exchange chamber for storing a cutting tool 6 (see FIG. 7) in a tool stocker 80 (also see FIG. 7). 180 and are partitioned into a plurality of spaces.

As shown in FIG. 1, the processing chamber 120 is arranged in the lower left portion of the housing 11. As shown in FIG. 3, the processing chamber 120 extends to the rear end of the housing 11. As shown in FIG. The changer chamber 170 is arranged above the front portion of the processing chamber 120 . The changer chamber 170 extends to the central portion of the housing 11 in the front-rear direction. The drive chamber 130 is arranged to the right of the processing chamber 120 . As shown in FIG. 4 , the drive chamber 130 extends to the rear end of the housing 11 . The tool exchange chamber 180 is arranged above the front portion of the drive chamber 130 . The tool exchange chamber 180 extends to the central portion of the housing 11 in the front-rear direction. In addition, the drive device chamber 130 may be arranged on the left side of the processing chamber 120 . In that case, the tool exchange chamber 180 may be arranged to the left of the changer chamber 170 .

A front opening 121 (see FIG. 3) of the processing chamber 120 is provided with a processing chamber door 122 that can be opened and closed. A drive-chamber cover 131 is provided at the front opening of the drive-chamber 130 . A changer chamber door 171 is provided at the front opening of the changer chamber 170 so as to be freely opened and closed. A front opening of the tool changing chamber 180 is provided with a tool changing chamber door 181 that can be opened and closed. The processing chamber door 122, the changer chamber door 171, and the tool exchange chamber door 181 are provided with transparent windows 122a, 171a, and 181a, respectively, so that the inside can be visually recognized. An operation panel 110 is provided on the front surface of the driving device chamber cover 131 . As shown in FIGS. 3 and 4, the front surface of the housing 11 (here, the front openings of the processing chamber 120, the drive chamber 130, the changer chamber 170, and the tool exchange chamber 180) is inclined with respect to the bottom surface. formed. The front surface of the housing 11 is formed so as to incline backward.

As shown in FIGS. 3 and 4, above the machining chamber 120 and drive chamber 130 and behind the changer chamber 170 and tool exchange chamber 180 are the cutting device 50 and the spindle movement for moving the cutting device 50 . A cutting device chamber 150 in which a device 60 (which will be described later has a spindle 51 with a rotating spindle unit 52) and a cutting device 50 are arranged. The cutting device chamber 150 here occupies almost the entire width of the housing 11 in the left-right direction.

The work holder 20 is an example of a holding device that holds the object 1 to be cut. The work holder 20 here holds the workpiece 1 via the adapter 5 . However, the work holder 20 may directly hold the workpiece 1 without using other members. FIG. 5 is a plan view of the work holder 20. FIG. As shown in FIG. 5, the work holder 20 has a pair of left and right arms 21 . The adapter 5 is held by the work holder 20 by being inserted between the pair of arms 21 . The operation of the cutting machine 10 when the adapter 5 is inserted between the pair of arms 21 will be described later.

The holder moving device 30 supports and moves the work holder 20. In this embodiment, the holder moving device 30 moves the work holder 20 in the front-rear direction. More specifically, as shown in FIG. 4, the holder moving device 30 moves the work holder 20 obliquely forward and backward so as to descend backward. When the work holder 20 is moved forward by the holder moving device 30, it also moves upward. When the work holder 20 is moved backward by the holder moving device 30, it also moves downward. As shown in FIG. 4, hereinafter, the direction in which the work holder 20 is moved by the holder moving device 30 is also referred to as the X-axis direction. Further, hereinafter, the front in the X-axis direction may be simply referred to as the front, and the rear in the X-axis direction may simply be referred to as the rear, unless otherwise specified.

As shown in FIG. 5, the holder moving device 30 includes a support arm 31 that extends in the left-right direction and supports the work holder 20. As shown in FIG. As shown in FIG. 4, the holder moving device 30 includes an X-axis moving body 32 connected to a support arm 31, a pair of X-axis guide rails 33, an X-axis driving motor 34, a ball screw 35, It has The holder moving device 30 moves the work holder 20 in the X-axis direction by moving the support arm 31 in the X-axis direction. At least part of the holder moving device 30 is housed in the driving device chamber 130 . Here, the X-axis direction moving body 32, the pair of X-axis guide rails 33, the X-axis direction drive motor 34, the ball screw 35, and part of the support arm 31 of the holder moving device 30 are accommodated in the drive device chamber 130. there is

As shown in FIG. 4, the pair of X-axis guide rails 33 extends in the X-axis direction. The X-axis moving body 32 is slidably engaged with a pair of X-axis guide rails 33 . The X-axis direction moving body 32 can move in the X-axis direction along the X-axis guide rails 33 . The ball screw 35 extends in the X-axis direction. The ball screw 35 is meshed with a nut provided on the X-axis moving body 32 . The X-axis direction drive motor 34 rotates the ball screw 35 around the axis. When the X-axis driving motor 34 is driven to rotate the ball screw 35 , the X-axis moving body 32 moves along the X-axis guide rail 33 in the X-axis direction. The X-axis direction drive motor 34 is an example of a drive unit that moves the support arm 31 and the work holder 20 in the X-axis direction by moving the X-axis direction moving body 32 in the X-axis direction. Note that the holder moving device 30 is not limited to having a ball screw mechanism, and may have, for example, a timing belt or a wire.

The holder moving device 30 is configured to move the work holder 20 within a predetermined range in the X-axis direction when the workpiece 1 held by the work holder 20 is cut by the cutting device 50 . Hereinafter, this predetermined range in the X-axis direction will also be referred to as a "moving range during cutting". FIG. 3 illustrates a state in which the work holder 20 is positioned within the range of movement during cutting.

As shown in FIG. 5, the support arm 31 includes a rotating shaft 31a that rotates about an axis Axb that extends in the left-right direction, and a rotating shaft 31a that is connected to the rotating shaft 31a so as to be orthogonal to the axis Axb and rotates in the front-rear direction together with the rotating shaft 31a. It has a first arm 31b and a second arm 31c connected to the first arm 31b parallel to the axis Axb (perpendicular to the first arm 31b). As shown in FIG. 4, the X-axis moving body 32 is provided with a B-axis rotating motor 41B that rotates the rotating shaft 31a around the axis Axb. The support arm 31 and the B-axis rotary motor 41B constitute a part of a rotating device 40 that changes the posture of the work holder 20 by rotating the work holder 20 . When the B-axis rotating motor 41B is driven to rotate the rotating shaft 31a, the work holder 20 rotates in the front-rear direction. Hereinafter, the extending direction of the axis Axb is also referred to as the B axis direction, and rotation about the axis Axb is also referred to as rotation about the B axis. Among the rotating devices 40, a device that rotates the work holder 20 around the B-axis is also called a B-axis rotating device 40B.

The rotating device 40 also includes an A-axis rotating device 40A that rotates the work holder 20 in the left-right direction. As shown in FIG. 5, the A-axis rotating device 40A includes an A-axis rotating motor 41A and a rotating shaft 42A. The A-axis rotary motor 41A is fixed to the second arm 31c. The rotary shaft 42A is connected to the A-axis rotary motor 41A and extends in the front-rear direction along the axis Axa. When the A-axis rotary motor 41A is driven, the rotary shaft 42A rotates around the axis Axa. Hereinafter, the extension direction of the axis Axa is also referred to as the A-axis direction, and rotation about the axis Axa is also referred to as rotation about the A-axis.

The processing chamber 120 is partitioned by a plurality of walls and accommodates the work holders 20 . As shown in FIG. 3, the multiple walls include a bottom wall 120D, a left wall 120L (see FIG. 1), a right wall 120R, a rear wall 120Rr, a front wall 120F, and a top wall 120U. The plurality of walls 120D, 120L, 120R, 120Rr, 120F, and 120U are formed here by metal plates. The bottom wall 120</b>D is arranged below the work holder 20 and forms the bottom surface of the processing chamber 120 . The bottom wall 120D is configured to be substantially horizontal when the cutting machine 10 is installed on a horizontal surface. The ceiling wall 120U is arranged above the work holder 20 and forms the ceiling of the processing chamber 120. As shown in FIG. The left side wall 120L, the right side wall 120R, the rear wall 120Rr, and the front wall 120F are erected to connect the top wall 120U and the bottom wall 120D. The left side wall 120L is connected to the left end of the bottom wall 120D and extends upward. The left side wall 120L is erected to the left of the work holder 20. As shown in FIG. The right side wall 120R is connected to the right end of the bottom wall 120D and extends upward. The right side wall 120</b>R is erected to the right of the work holder 20 . The rear wall 120Rr is connected to the rear end of the bottom wall 120D and extends upward. The left and right ends of the rear wall 120Rr are connected to the rear ends of the left and right walls 120L and 120R, respectively. The rear wall 120Rr is erected behind the work holder 20. As shown in FIG. The front wall 120F is connected to the front end of the bottom wall 120D and extends obliquely upward. The front wall 120</b>F is erected forward of the work holder 20 . The front wall 120F extends to tilt rearward. The extending direction of the front wall 120F is a direction orthogonal to the X-axis direction. The left end and right end of the front wall 120F are connected to the front end of the left side wall 120L and the right side wall 120R, respectively. The ceiling wall 120U extends in a direction orthogonal to the front wall 120F, that is, parallel to the X-axis direction. The ceiling wall 120U is inclined downward toward the rear. The ceiling wall 120U is provided non-parallel to the bottom wall 120D. The front end, left end, right end and rear end of the ceiling wall 120U are connected to the upper end of the front wall 120F, left wall 120L, right wall 120R and rear wall 120Rr, respectively. ing.

A front opening 121 is formed in the front wall 120F of the processing chamber 120 . As described above, the front opening 121 is provided with the processing chamber door 122 that can be opened and closed. The front opening 121 extends upward from a position above the lower end of the front wall 120F. The vicinity of the lower end of the front wall 120F forms a corner that is not open to the outside.

The right side wall 120R separates the processing chamber 120 and the driving device chamber 130. The right side wall 120R of the processing chamber 120 is also the left side wall of the drive chamber 130 . As shown in FIG. 3, the right side wall 120R is formed with a slit 123 extending in the X-axis direction and through which the support arm 31 of the holder moving device 30 passes. The slit 123 is an opening through which the support arm 31 is inserted. A dust-proof plate 36 is fixed to the support arm 31 to prevent cutting powder generated in the machining chamber 120 from entering the driving device chamber 130 . The dustproof plate 36 is provided so as to cover at least part of the slit 123 and moves in the X-axis direction together with the support arm 31 . The dust-proof plate 36 is fixed to a portion of the support arm 31 positioned inside the processing chamber 120 and provided inside the processing chamber 120 . The dustproof plate 36 here is configured to cover different portions of the slit 123 according to the position of the support arm 31 in the X-axis direction.

As shown in FIG. 3, the dust-proof plate 36 is configured to cover the rear end of the slit 123 when the work holder 20 is positioned within the movement range during cutting. At this time, the front end of the slit 123 is not covered with the dustproof plate 36 and is open. The dust-proof plate 36 is configured to be positioned behind the front end of the slit 123 when the work holder 20 is positioned within the movement range during cutting. The dust-proof plate 36 opens more of the front side of the slit 123 as the support arm 31 moves rearward. As will be described later, this is because cutting dust tends to collect behind the work holder 20 due to the flow of air in the processing chamber 120 , and there is less cutting dust in front of the work holder 20 . As a result, the length of the dustproof plate 36 is shortened, and the lengthening of the processing chamber 120 toward the front is suppressed. A part of the front side of the slit 123 is open regardless of the position of the work holder 20 . Since a part of the front side of the slit 123 is open, a flow of air from the drive device chamber 130 to the processing chamber 120 is generated. This prevents cutting powder and the like in the processing chamber 120 from entering the driving device chamber 130 .

As shown in FIG. 3, the ceiling wall 120U partitions the processing chamber 120 and the changer chamber 170, and also partitions the processing chamber 120 and the cutting device chamber 150. A front opening 124 that communicates the processing chamber 120 and the changer chamber 170 and a rear opening 125 that communicates the processing chamber 120 and the cutting device chamber 150 are opened in the ceiling wall 120U. The front side portion of the ceiling wall 120U of the processing chamber 120 is also the bottom wall of the changer chamber 170. As shown in FIG. The front opening 124 is formed below the changer chamber 170 . The front side opening 124 is an opening through which the workpiece 1 conveyed by the conveying device 72 of the work changer 70 can pass. As will be described later, here, the transport device 72 transports the adapter storage portion 71 containing the adapter 5 from the front side opening portion 124 to the processing chamber 120 .

The rear side portion of the ceiling wall 120U of the processing chamber 120 is also the left side portion of the bottom wall of the cutting device chamber 150. The rear opening 125 is formed below the cutting device chamber 150 . The rear opening 125 is an opening through which at least part of the cutting device 50, here, the lower part of the main shaft 51, can pass. The rear opening 125 is an opening through which the cutting tool 6 and the main shaft 51 pass when the main shaft 51 is moved in the Z-axis direction (see FIG. 3) by a Z-axis direction moving device 60Z, which will be described later. Although the details will be described later, the rear side opening 125 extends above the driving device chamber 130 so as to allow the driving device chamber 130 and the cutting device chamber 150 to communicate with each other (see FIG. 7).

As shown in FIG. 3, the bottom wall 120D of the processing chamber 120 includes a substantially horizontal bottom portion 126 and a slope 127 connected to the rear end portion of the bottom portion 126 and extending rearward therefrom. there is The slope 127 is inclined upward toward the rear. The slope 127 and the bottom 126 are connected so as to bend. The slope 127 is connected to the rear wall 120Rr. A space is formed below the slope 127 .

An exhaust port 128 is opened in the bottom wall 120D. A dust collector 111 (see FIG. 11) is connected to the exhaust port 128 via an exhaust duct 92 or the like, which will be described later. Air and dust in the processing chamber 120 are discharged from the exhaust port 128 . The exhaust port 128 is provided on the slope 127 . More specifically, the exhaust port 128 opens along the connecting portion of the slope 127 with the rear wall 120Rr. A rear edge of the exhaust port 128 is formed by a rear wall 120Rr. The exhaust port 128 is provided at the rearmost part of the slope 127 . The slope 127 is inclined upward toward the exhaust port 128 .

As shown in FIG. 5 , the exhaust port 128 opens to the rear of the work holder 20 . As a result, a wind flows from the front to the rear across the work holder 20 . Further, as shown in FIG. 5, at least a portion of the slope 127 overlaps at least a portion of the work holder 20 in plan view (see also FIG. 3). As a result, fragments of the object to be cut 1 dropped by cutting fall onto the slope 127 . Among the fragments of the workpiece 1 that have fallen onto the slope 127 , large pieces slide down the slope 127 without being sucked into the exhaust port 128 even by suction from the exhaust port 128 . As a result, the larger fragments of the object 1 to be cut are sorted out. Also, for example, even if the workpiece 1 falls from the adapter 5 due to the load of the cutting process, the dropped workpiece 1 slides down the slope 127 without being sucked into the exhaust port 128 by suction from the exhaust port 128 .

As shown in FIG. 5, the exhaust port 128 is biased to the right of the horizontal center line CL of the processing chamber 120 (which may or may not coincide with the A axis). is provided. In other words, the exhaust port 128 is provided so as to be closer to the driving device chamber 130 than the center line CL of the processing chamber 120 in the left-right direction. As a result, the dust and the like near the driving device chamber 130 are discharged intensively. The exhaust port 128 is a single slit that opens upward. The exhaust port 128 is formed in a substantially rectangular shape whose length in the left-right direction is longer than its length in the front-rear direction.

As shown in FIG. 3, a dust collection chamber 90 is provided below the exhaust port 128 in this embodiment. Dust collection chamber 90 is fixed to the lower surface of slope 127 . The dust collection chamber 90 is a box-shaped member with an open top, and an upward opening 90U is connected to the exhaust port 128 . As shown in FIGS. 3 and 5, the dust collection chamber 90 includes an upper opening 90U, a bottom wall 90D, a front wall 90F, and a left side wall 90L. A rear wall and a right side wall of the dust collection chamber 90 are formed by a rear wall 120Rr and a right side wall 120R of the processing chamber 120, respectively. However, the dust collection chamber 90 may have a rear wall and a right side wall that are not shared with the processing chamber 120 . An internal space is formed in the dust collection chamber 90 by the bottom wall 90D, the front wall 90F, the left wall 90L, the rear wall 120Rr of the processing chamber 120, and the right wall 120R of the processing chamber 120. As shown in FIG. 5, the internal space of the dust collection chamber 90 is larger than the exhaust port 128 in plan view.

An upper opening 90U and a duct connection hole 91 are formed in the dust collection chamber 90 . The duct connection hole 91 is an opening to which the exhaust duct 92 is connected. As shown in FIG. 3 , the cutting machine 10 has an exhaust duct 92 connected to the duct connection hole 91 . The duct connection hole 91 here opens to the rear wall of the dust collection chamber 90 (the rear wall 120Rr of the processing chamber 120). The opening direction of the upper opening 90U (exhaust port 128) and the opening direction of the duct connection hole 91 intersect. However, the duct connection hole 91 may open to another side wall of the dust collection chamber 90 (for example, the right side wall 120R). A front end portion of the exhaust duct 92 is connected to the duct connection hole 91 . The exhaust duct 92 communicates with the exhaust port 128 and the processing chamber 120 via the dust collection chamber 90 . A rear end portion of the exhaust duct 92 extends to the outside of the cutting machine 10 . A dust collector 111 (see FIG. 11) is connected to the rear end of the exhaust duct 92 . As shown in FIG. 5, the dust collection chamber 90 and the exhaust duct 92 are also positioned to the right of the center line CL in the left-right direction of the processing chamber 120, in other words, the driving device is positioned further to the center line CL in the left-right direction of the processing chamber 120. As shown in FIG. It is provided so as to be biased toward the chamber 130 side.

As shown in FIG. 3, the top wall 120U of the processing chamber 120 is provided with a top surface nozzle 93N of the top surface air blow device 93. The top surface air blow device 93 blows air along the top wall 120U of the processing chamber 120, and sends the blown air through the rear wall 120Rr to the exhaust port 128, thereby blowing the top wall 120U of the processing chamber 120 and the rear wall. Clean the wall 120Rr. The ceiling air blow device 93 includes a pipe (not shown) connected to an external air compressor or the like, a valve (not shown) for controlling air flow, and a ceiling nozzle 93N for injecting air along the ceiling wall 120U of the processing chamber 120. and have. The ceiling nozzle 93N jets air along the ceiling wall 120U and the rear wall 120Rr of the processing chamber 120 to reach the exhaust port 128, as indicated by arrow F1 in FIG. In the present embodiment, the exhaust port 128 opens along the connecting portion of the bottom wall 120D (more specifically, the slope 127) with the rear wall 120Rr. Therefore, the air injected from the top surface nozzle 93N is smoothly sent to the exhaust port 128. - 特許庁

Although the plan view is omitted, the top surface nozzle 93N is provided at a position aligned with the exhaust duct 92 in the left-right direction. Therefore, the top surface nozzle 93N is also provided so as to deviate to the right of the center line CL in the left-right direction of the processing chamber 120 . In other words, the top surface nozzle 93N is also provided so as to be closer to the driving device chamber 130 side than the center line CL of the processing chamber 120 in the left-right direction. Moreover, the top surface nozzle 93N can jet air toward the cutting device 50 when protruding into the processing chamber 120 . Here, the ceiling nozzle 93N jets air so as to pass below the rear opening 125 of the ceiling wall 120U. As a result, the lower portion of the main shaft 51 of the cutting device 50 and the cutting tool 6 are cleaned when they are moved into the processing chamber 120 through the rear side opening 125 .

As shown in FIG. 3, the cutting machine 10 further has a bottom air blow device 94 having a bottom nozzle 94N. The bottom nozzle 94N jets air along the bottom wall 120D of the processing chamber 120 so as to reach the exhaust port 128 . The bottom air blow device 94 cleans the bottom wall 120</b>D of the processing chamber 120 by blowing jetted air along the bottom wall 120</b>D of the processing chamber 120 to the exhaust port 128 . The bottom air blow device 94 includes a pipe (not shown) connected to an external air compressor or the like, a valve (not shown) for controlling the flow of air, a bottom nozzle 94N for injecting air along the bottom wall 120D of the processing chamber 120, It has

The bottom nozzle 94N is provided above the bottom wall 120D. Specifically, as shown in FIG. 3, the bottom nozzle 94N is fixed to a mounting plate 95 that is diagonally spanned between the bottom wall 120D and the front wall 120F of the processing chamber 120. As shown in FIG. As indicated by an arrow F2 in FIG. 3, the bottom nozzle 94N jets air obliquely downward toward the bottom wall 120D and toward the exhaust port 128 side. Here, the bottom nozzle 94N jets air obliquely downward and rearward toward the bottom wall 120D. As a result, the air that has collided with the bottom wall 120D spreads in the left-right direction. As a result, a wide range in the horizontal direction of the bottom wall 120D can be cleaned without widening the width of the bottom nozzle 94N in the horizontal direction. In this embodiment, the bottom nozzle 94N is provided in the central portion of the processing chamber 120 in the left-right direction. However, the bottom nozzle 94N may be provided so as to deviate to either the left or right of the center line CL of the processing chamber 120 in the left-right direction.

The work changer 70 is configured to accommodate a plurality of workpieces 1 to be cut, and is used to replace the workpiece 1 to be machined. As shown in FIG. 3, the work changer 70 includes an adapter storage section 71 capable of storing a plurality of workpieces 1 (here, the adapters 5 to which the workpieces 1 are attached; see FIG. 2); 71 to the processing chamber 120. For example, the adapter housing portion 71 is housed in the changer chamber 170 except when the workpiece 1 to be cut is changed. As shown in FIG. 1, the adapter storage section 71 is provided with a plurality of shelf-like storage spaces 71a each accommodating one adapter 5. As shown in FIG. The plurality of storage spaces 71a are arranged vertically. More specifically, the plurality of storage spaces 71a are arranged side by side in an oblique vertical direction (hereinafter also referred to as the L-axis direction, see FIG. 3) orthogonal to the X-axis direction.

The conveying device 72 includes a slide arm 72A extending in the L-axis direction, an L-axis direction drive motor 72B, and a ball screw 72C. The slide arm 72A is fixed to the adapter housing portion 71 and can be extended and shortened in the L-axis direction. A ball screw 72C is meshed with the adapter housing portion 71 . The L-axis drive motor 72B is connected to the ball screw 72C and rotates the ball screw 72C. When the L-axis direction drive motor 72B is driven to rotate the ball screw 72C, the slide arm 72A expands and contracts, and the adapter housing portion 71 moves in the L-axis direction.

FIG. 6 is a longitudinal sectional view showing the cutting machine 10 during replacement of the adapter 5 (see FIG. 2). As shown in FIG. 6, the adapter housing portion 71 descends into the processing chamber 120 when the adapter 5 is replaced. The adapter housing portion 71 moves into the processing chamber 120 through the front opening 124 of the processing chamber 120 . When the adapter 5 is replaced, the holder moving device 30 moves the work holder 20 forward in the X-axis direction beyond the range of movement during cutting. As shown in FIG. 6, at this time, the rear end of the slit 123 is not covered with the dustproof plate 36 and is open. The dust-proof plate 36 is positioned forward of the rear end of the slit 123 when the work holder 20 is positioned at the transfer position for transferring the workpiece 1 to and from the work changer 70 . ing. As a result, the length of the dustproof plate 36 is shortened, and the rearward lengthening of the processing chamber 120 is suppressed. As shown in FIG. 6, the adapter 5 is held by the work holder 20 when the work holder 20 advances forward in the X-axis direction and plunges into the storage space 71a (see FIG. 1) of the adapter 5. As shown in FIG. In the present embodiment, the conveying device 72 conveys a plurality of workpieces 1 to the processing chamber 120 by conveying the adapter storage portion 71 to the processing chamber 120, but the configuration of the conveying device 72 is limited to this. not. The transport device 72 may be configured to transport at least one of the plurality of objects 1 to be cut stored in the adapter storage portion 71 to the processing chamber 120 . For example, the conveying device 72 may be configured to grip and take out the workpiece 1 in the storage space 71 a of the fixed adapter storage portion 71 and transfer it to the work holder 20 .

The cutting device 50 and the moving device for the cutting device 50 (spindle moving device 60 ) are housed in the cutting device chamber 150 . The cutting device 50 cuts the workpiece 1 held by the work holder 20 . As shown in FIG. 3 , the cutting device 50 and the spindle moving device 60 are provided above the work holder 20 . The cutting device 50 includes a main shaft 51 that grips and rotates the cutting tool 6 . The main shaft 51 has a spindle unit 52 and a gripping portion 53 provided at the lower end of the spindle unit 52 . The spindle unit 52 extends in a direction orthogonal to the X-axis direction (here, parallel to the L-axis direction). Hereinafter, this direction will also be referred to as the Z-axis direction. The spindle unit 52 rotates the gripper 53 around an axis parallel to the Z-axis direction. The gripping portion 53 grips the cutting tool 6 so as to protrude downward in the Z-axis direction. The spindle unit 52 here is a unit with a built-in motor. However, the spindle unit 52 may be connected to an external motor and a belt, for example. The gripping part 53 is, for example, an air-driven collet chuck. However, the method of the grip portion 53 is not particularly limited.

The spindle moving device 60 moves the cutting device 50 in the Z-axis direction and the left-right direction. The horizontal direction is a direction orthogonal to the X-axis direction and the Z-axis direction. Hereinafter, the left-right direction is also referred to as the Y-axis direction. The spindle moving device 60 moves the cutting device 50 in the Y-axis direction and the Z-axis direction, and the holder moving device 30 moves the work holder 20 in the X-axis direction. changes three-dimensionally. The Z-axis direction is a direction that intersects (here, is perpendicular to) the ceiling wall 120U of the processing chamber 120, and the cutting device 50 appears in the processing chamber 120 or moves into the cutting device chamber by moving in the Z-axis direction. Retreat within 150. The spindle moving device 60 can move the cutting device 50 to a position where at least part of it is located above the work holder 20 and below the ceiling wall 120U.

The spindle movement device 60 includes a Y-axis direction movement device 60Y and a Z-axis direction movement device 60Z. The Y-axis direction moving device 60Y is a device that moves the cutting device 50 in the Y-axis direction. The Z-axis direction moving device 60Z is a device that moves the cutting device 50 in the Z-axis direction. FIG. 7 is a perspective view of the cutter chamber 150 and the drive chamber 130. FIG. In FIG. 7, some members are omitted so that the insides of the cutting device chamber 150 and the driving device chamber 130 can be seen. As shown in FIG. 7, the Y-axis direction moving device 60Y includes a pair of Y-axis guide rails 61Y extending in the Y-axis direction, a Y-axis direction moving body 62Y slidably engaged with the Y-axis guide rails 61Y, It has a Y-axis direction drive motor 63Y and a ball screw 64Y. A pair of Y-axis guide rails 61Y are provided on the bottom wall of the cutting device chamber 150 . The Y-axis guide rail 61Y extends above the drive device chamber 130 . The Y-axis direction moving body 62Y is movable in the Y-axis direction along the Y-axis guide rail 61Y. The Y-axis moving body 62Y can move up to above the driving device chamber 130 along the Y-axis guide rail 61Y. The Y-axis moving body 62Y supports the Z-axis moving device 60Z. The Z-axis direction moving device 60Z supports the cutting device 50 so as to be movable in the Z-axis direction.

As shown in FIG. 7, the ball screw 64Y extends in the Y-axis direction. The ball screw 64Y is meshed with the Y-axis moving body 62Y. The Y-axis direction drive motor 63Y rotates the ball screw 64Y. When the Y-axis direction drive motor 63Y drives and the ball screw 64Y rotates, the Y-axis direction moving body 62Y moves in the Y-axis direction along the Y-axis guide rail 61Y. As a result, the Z-axis direction moving device 60Z and the cutting device 50 move in the Y-axis direction.

As shown in FIG. 3, the Z-axis direction moving device 60Z includes a pair of Z-axis guide shafts 61Z extending in the Z-axis direction, and a Z-axis guide shaft 61Z slidably engaged with the Z-axis guide shafts 61Z to support the cutting device 50. It has a directional moving body 62Z, a Z-axis direction driving motor 63Z, and a ball screw (not shown). The Z-axis direction moving device 60Z also moves the cutting device 50 in the Z-axis direction in the same manner as the Y-axis direction moving device 60Y moves the Z-axis direction moving device 60Z.

Although not shown, bellows may be provided on the left and right sides of the Y-axis direction moving body 62Y. Both ends of the right bellows are connected to the right end of the Y-axis direction moving body 62Y and the right end of the rear opening 125, respectively. Both ends of the left bellows are connected to the left end of the Y-axis direction moving body 62Y and the left end of the rear opening 125, respectively. The bellows prevents dust and the like from entering the cutting device chamber 150 through the rear opening 125 .

As shown in FIG. 3, the ceiling wall 150U of the cutting device chamber 150 has an intake port 152 open. The intake port 152 here is composed of a plurality of slits arranged in the left-right direction. However, the shape of the intake port 152 is not particularly limited. The intake port 152 is an opening for drawing outside air into the cutting machine 10 as the air is discharged from the exhaust port 128 . The intake port 152 communicates with the cutting device chamber 150 . In addition, the intake port 152 also communicates with the driving device chamber 130 and the changer chamber 170 via the cutting device chamber 150 . The cutting device chamber 150 and the driving device chamber 130 are communicated with each other through a rear opening 125 opened in the bottom wall of the cutting device chamber 150 (the ceiling wall of the driving device chamber 130). The cutting device chamber 150 and the changer chamber 170 communicate with each other without a partition. The machining chamber 120 communicates with an intake port 152 via a cutting device chamber 150 and a driving device chamber 130 . The drive device chamber 130 and the processing chamber 120 are communicated by a slit 123 opened in the right side wall 120R of the processing chamber 120 (the left side wall of the drive device chamber 130). The machining chamber 120 communicates with the intake port 152 also through the cutting device chamber 150 and the changer chamber 170 . The changer chamber 170 and the processing chamber 120 are communicated with each other through a front opening 124 opened in a ceiling wall 120U of the processing chamber 120 (bottom wall of the changer chamber 170).

The air intake port 152 communicates with the cutting device chamber 150 , the cutting device chamber 150 and the processing chamber 120 communicate with each other through the rear opening 125 , and the exhaust duct 92 communicates with the processing chamber 120 , whereby the dust collector 111 is driven, as shown in FIG. 3, a wind flow F3 is generated from the intake port 152 to the machining chamber 120 via the cutting device chamber 150. As shown in FIG. The internal pressure of the cutting device chamber 150 is higher than the internal pressure of the processing chamber 120 . Therefore, it becomes difficult for cutting dust and the like generated in the processing chamber 120 to enter the cutting device chamber 150 . Similarly, since the intake port 152 communicates with the changer chamber 170 and the changer chamber 170 and the processing chamber 120 communicate with each other through the front opening 124, when the dust collector 111 is driven, as shown in FIG. A wind flow F4 is generated from the intake port 152 to the processing chamber 120 via the changer chamber 170 . The internal pressure of the changer chamber 170 is higher than the internal pressure of the processing chamber 120 . This makes it difficult for cutting powder and the like generated in the processing chamber 120 to enter the changer chamber 170 . Furthermore, the intake port 152 communicates with the driving device chamber 130, and the driving device chamber 130 and the processing chamber 120 communicate with each other through the slit 123, so that when the dust collector 111 is driven, as shown in FIG. A wind flow F5 is generated from 152 (see FIG. 3) toward the processing chamber 120 via the drive chamber 130 . The internal pressure of the drive chamber 130 is higher than the internal pressure of the processing chamber 120 . This makes it difficult for cutting powder and the like generated in the processing chamber 120 to enter the driving device chamber 130 .

As shown in FIG. 7, the tool stocker 80 is housed in the drive chamber 130 in this embodiment. The tool stocker 80 is configured to store a plurality of cutting tools 6 . The plurality of cutting tools 6 are used properly according to, for example, the material of the object 1 to be cut and the type of cutting. As shown in FIG. 7, the tool stocker 80 is supported by the X-axis moving body 32 . Specifically, the tool stocker 80 is fixed to the upper surface of the X-axis moving body 32 . Conventionally, the tool stocker was supported by the support arm of the holder moving device. Therefore, in the conventional cutting device, the support arm is easily bent, and a large load cannot be applied to the object 1 to be cut during cutting of the object 1 to be cut. Specifically, in consideration of the load due to cutting, the amount of cutting per hour is limited. In this embodiment, the load on the support arm 31 is reduced by supporting the tool stocker 80 on the X-axis moving body 32 .

FIG. 8 is a plan view of the tool stocker 80. FIG. As shown in FIG. 8, the tool stocker 80 has a plurality of storage holes 81 that can accommodate the cutting tools 6, respectively. A plurality of storage holes 81 are formed in the upper surface 80U of the tool stocker 80 and recessed downward in the Z-axis direction. As shown in FIG. 8, the plurality of storage holes 81 are arranged in a zigzag pattern. Specifically, the tool stocker 80 is formed with rows 81A to 81E in which some of the plurality of storage holes 81 are aligned in a predetermined alignment direction (here, the Y-axis direction). , two adjacent columns (for example, column 81A and column 81B) among the plurality of columns 81A to 81E are displaced in the alignment direction. The amount of positional deviation in the alignment direction between two adjacent rows is less than half the pitch of the storage holes 81 in each row 81A to 81E. Due to this zigzag arrangement, the plurality of storage holes 81 are densely arranged. As a result, the storage efficiency of the cutting tool 6 with respect to the space is improved. It should be noted that the plurality of columns 81A to 81E are arranged alternately in the alignment direction.

The cutting device 50 is configured to be able to grip each cutting tool 6 stored in the tool stocker 80 , and cuts the workpiece 1 held by the work holder 20 with the gripped cutting tool 6 . To enable this, the spindle movement device 60 moves the cutting device 50 between the drive device chamber 130 and the processing chamber 120 . Also, the holder moving device 30 moves the tool stocker 80 below the cutting device chamber 150 .

As shown in FIGS. 3 and 7, the cutting device 50 is provided above the work holder 20 and the tool stocker 80 in this embodiment. The Y-axis direction moving device 60Y of the spindle moving device 60 moves the cutting device 50 in the Y-axis direction so that the cutting device 50 moves between above the driving device chamber 130 and above the processing chamber 120 . The Z-axis direction moving device 60Z of the spindle moving device 60 moves the cutting device 50 in the vertical direction (here, in the Z-axis direction inclined with respect to the vertical direction). The holder moving device 30 is configured to be able to move the tool stocker 80 to a tool gripping position P1 (see FIG. 7) set below the moving path of the cutting device 50 by the Y-axis direction moving device 60Y. The tool gripping position P<b>1 is a position below the rear side opening 125 . By moving the tool stocker 80 to the tool gripping position P1 and moving the cutting device 50 to a position above the tool gripping position P1, the Z-axis direction moving device 60Z is driven to lower the cutting device 50. , the cutting device 50 can grip the cutting tool 6 of the tool stocker 80 .

The holder moving device 30 is configured to be able to move the tool stocker 80 to the tool exchange position P2 set ahead of the tool gripping position P1. As shown in FIG. 7, the tool gripping position P2 is set below the bottom wall 182 of the tool exchange chamber 180. As shown in FIG. A bottom wall 182 of the tool change chamber 180 separates the tool change chamber 180 and the drive device chamber 130 . As shown in FIG. 7, the bottom wall 182 of the tool exchange chamber 180 is formed with an opening 183 that opens above the tool exchange position P2. The opening 183 is an opening through which the user inserts and withdraws the cutting tool 6 from the tool stocker 80 . The opening 183 penetrates the bottom wall 182 in the Z-axis direction. When the holder moving device 30 is driven to move the tool stocker 80 to the tool exchange position P2, the user can access the tool stocker 80 through the opening 183. FIG. By providing the tool exchange chamber 180 in which the opening 183 is formed, the user is prevented from touching the holder moving device 30 when exchanging the cutting tool 6 or the like. In addition, such a configuration prevents foreign matter from entering the driving device chamber 130 when the cutting tool 6 is replaced.

As shown in FIG. 3, the cutting machine 10 according to the present embodiment further includes a spindle air blow device 55 which is provided on the spindle 51 and ejects air. The main shaft air blow device 55 includes a main shaft nozzle 56 provided on the side of the grip portion 53 of the main shaft 51 . FIG. 9 is a partially broken side view of the vicinity of the lower end of the main shaft 51. As shown in FIG. As shown in FIG. 9 , the main shaft air blow device 55 includes a main shaft nozzle 56 that injects air and a nozzle support member 57 that supports the main shaft nozzle 56 . The nozzle support member 57 is provided above the grip portion 53 in the Z-axis direction. The nozzle support member 57 is fixed to a cover that covers the spindle unit 52 here. The nozzle support member 57 supports the main shaft nozzle 56 so as to be movable in the Z-axis direction. Specifically, the nozzle support member 57 is positioned above the Z-axis direction lower end position Pd (the position shown in FIG. 9, also referred to as the lower end position Pd) and the lower end position Pd in the Z-axis direction. It supports the spindle nozzle 56 so as to be movable between other positions. A lower end position Pd of the spindle nozzle 56 is set to the side of the grip portion 53 . At the lower end position Pd, the grip portion 53 and the spindle nozzle 56 are aligned in the X-axis direction.

As shown in FIG. 9, the nozzle support member 57 includes a guide hole 57a through which the main shaft nozzle 56 is inserted, and a stopper 57b that restricts the main shaft nozzle 56 from moving below the lower end position Pd. ing. The main shaft air blow device 55 also includes a biasing member 58 that biases the main shaft nozzle 56 supported by the nozzle support member 57 to hold the main shaft nozzle 56 at the lower end position Pd. The biasing member 58 is here a coil spring. However, the biasing member 58 is not limited to a coil spring, and may be an air cylinder or the like. The main shaft nozzle 56 has a contact portion 56a that contacts the stopper 57b at the lower end position Pd. The stopper 57b and the biasing member 58 hold the main shaft nozzle 56 at the lower end position Pd. Further, when the main shaft nozzle 56 is pushed upward along the Z axis, it moves upward along the Z axis along the guide hole 57a against the biasing force of the biasing member 58 .

The spindle nozzle 56 is provided above the work holder 20 and configured to inject air downward (here, vertically downward). The air blowing direction of the main shaft air blow device 55 is downward in the vertical direction. As a result, air is obliquely blown against the cutting tool 6 held by the holding portion 53 . However, the main shaft nozzle 56 may inject air in other directions. The main shaft nozzle 56 has a cut surface 56b formed on the side wall and extending obliquely in the Z-axis direction. The cut surface 56b has an inclination that approaches the grip portion 53 downward in the Z-axis direction. Here, the cut surface 56b extends obliquely upward from the lower end of the spindle nozzle 56. As shown in FIG.

When the cutting tool 6 attached to the spindle 51 is returned to the tool stocker 80 or when the cutting tool 6 of the tool stocker 80 is attached to the spindle 51, the Z-axis direction moving device 60Z moves the cutting tool stored in the tool stocker 80. The gripping part 53 is moved to a predetermined position in the Z-axis direction (hereinafter also referred to as a working position Po) set to grip or release the tool 6 . FIG. 10 is a side view of the vicinity of the tip of the cutting device 50 when the cutting tool 6 is replaced. FIG. 10 illustrates a state in which the grip portion 53 is positioned at the working position Po. As shown in FIG. 10, the spindle nozzle 56 abuts on the tool stocker 80 when the gripper 53 is positioned at the working position Po in the Z-axis direction. At this time, the spindle nozzle 56 is pushed by the tool stocker 80 and positioned above the lower end position Pd in the Z-axis direction against the biasing force of the biasing member 58 .

When the spindle nozzle 56 is not in contact with the tool stocker 80, it is positioned at the lower end position Pd lower in the Z-axis direction than when it is in contact with the tool stocker 80. As a result, when the workpiece 1 is machined, cleaned, or when the machining chamber 120 is cleaned (as will be described later, the spindle air blow device 55 is configured to inject air into the machining chamber 120 and the work holder 20). (also used for cleaning the processing chamber 120), the spindle nozzle 56 can be brought close to the cutting edge of the cutting tool 6, the workpiece 1, or the bottom wall 120D of the processing chamber 120. On the other hand, when the spindle nozzle 56 is at the lower end position Pd, when the cutting tool 6 attached to the spindle 51 is returned to the tool stocker 80 or when the cutting tool 6 in the tool stocker 80 is attached to the spindle 51, Long spindle nozzle 56 interferes with tool stocker 80 and cutting tool 6 . Therefore, in this embodiment, the main shaft air blow device 55 is configured to move upward (shrink) when the main shaft nozzle 56 is pushed upward in the Z-axis direction.

The cut surface 56b of the main shaft nozzle 56 is provided so that the main shaft nozzle 56 moves upward when an object pushes the main shaft nozzle 56 from the side. When an object presses the cut surface 56b from the side, part of the pressing force is converted into an upward force in the Z-axis direction by the cut surface 56b, and the main shaft nozzle 56 moves upward.

It should be noted that the configuration in which the spindle nozzle 56 moves in the vertical direction of the Z axis also has an effect on the possibility that an object other than the tool stocker 80 collides with the spindle nozzle 56 . According to such a configuration, when some object collides with the main shaft nozzle 56, the main shaft nozzle 56 moves upward in the Z-axis. Therefore, it is possible to reduce the risk of damage to the spindle nozzle 56 or the colliding object.

The control device 100 is connected to the holder moving device 30, the spindle moving device 60, the cutting device 50, etc., and controls their operations. FIG. 11 is a block diagram of the cutting machine 10. As shown in FIG. As shown in FIG. 11, the control device 100 controls the X-axis direction drive motor 34 of the holder moving device 30, the A-axis rotation motor 41A and the B-axis rotation motor 41B of the rotation device 40, the spindle unit 52 of the cutting device 50 and the a gripping portion 53, a Y-axis direction drive motor 63Y and a Z-axis direction drive motor 63Z of the spindle moving device 60, an L-axis direction drive motor 72B of the work changer 70, a top surface air blow device 93, a bottom air blow device 94, It is connected to the main shaft air blow device 55, the dust collector 111, and the operation panel 110, and controls their operations. Note that the control of the dust collector 111 may be performed not by the control device 100 but by a control device built into the dust collector 111 or an external device.

The configuration of the control device 100 is not particularly limited. The control device 100 is, for example, a microcomputer. The hardware configuration of the microcomputer is not particularly limited. processing unit), ROM (read only memory) that stores programs executed by the CPU, RAM (random access memory) that is used as a working area for developing programs, and memory that stores the above programs and various data a storage device;

As shown in FIG. 11, the control device 100 includes a cutting control section 101, a work exchange section 102, a tool exchange section 103, a work cleaning section 104, and a processing chamber cleaning section 105. The control device 100 may include other processing units, but illustration and description thereof are omitted here.

The cutting control unit 101 controls the X-axis direction driving motor 34 of the holder moving device 30, the A-axis rotating motor 41A and the B-axis rotating motor 41B of the rotating device 40, the spindle unit 52 of the cutting device 50, and the spindle moving device 60. By controlling the Y-axis direction driving motor 63Y and the Z-axis direction driving motor 63Z, the workpiece 1 is cut into a designated shape. During the cutting of the workpiece 1, the spindle air blower 55 is appropriately driven to remove cutting powder adhering to the workpiece 1, the adapter 5, and the work holder 20. FIG. During cutting of the workpiece 1, the dust collector 111 is driven.

The work exchanging section 102 controls the L-axis direction driving motor 72B of the work changer 70 and the X-axis direction driving motor 34 of the holder moving device 30 to change the workpiece 1 (adapter 5 holding the workpiece 1). ). As a result, a plurality of objects 1 to be cut are sequentially machined. The tool exchange section 103 controls the X-axis direction drive motor 34 of the holder moving device 30, the Y-axis direction driving motor 63Y and the Z-axis direction driving motor 63Z of the spindle moving device 60, and the gripping portion 53 of the cutting device 50. Then, the cutting tool 6 held by the holding portion 53 is replaced.

The work cleaning section 104 cleans the workpiece 1, the adapter 5, and the work holder 20 after the cutting process is completed. As shown in FIG. 10, the work cleaning section 104 includes a first blow control section 104A, a first posture control section 104B, a first movement control section 104C, and a reverse control section 104D.

The first blow control unit 104A controls the spindle air blow device 55 to blow air toward the work holder 20 after the cutting of the workpiece 1 is finished. The first attitude control unit 104B controls the rotation device 40 after the cutting of the object 1 to be cut is finished and before the main shaft air blow device 55 blows air under the control of the first blow control unit 104A. The attitude of the work holder 20 is controlled so that the two opposing surfaces (the first surface 1A and the second surface 1B) of the object 1 intersect the air injection direction of the spindle air blow device 55 at a predetermined angle. In this embodiment, the predetermined angle is 90 degrees. However, the angle between the direction of the air jet from the spindle air blower 55 and the two opposing surfaces 1A and 1B of the workpiece 1 is not limited to 90 degrees. The first attitude control section 104B also controls the rotating device 40 after the cutting of the workpiece 1 is finished and before the main shaft air blow device 55 blows air under the control of the first blow control section 104A. Then, the posture of the work holder 20 is controlled so that the first surface 1A of the workpiece 1 faces the spindle nozzle 56. As shown in FIG. As a result, the first surface 1A of the object 1 to be cut is cleaned.

The first movement control unit 104C controls the holder movement device 30 and the Y-axis direction movement device 60Y to move the work holder 20 while the spindle air blow device 55 is blowing air under the control of the first blow control unit 104A. moves the position of the spindle nozzle 56 with respect to . As a result, the location of the work holder 20 to which the air is jetted is moved. The holder moving device 30 and the Y-axis direction moving device 60Y function as moving devices that move the position of the spindle nozzle 56 with respect to the work holder 20. As shown in FIG. In this embodiment, the first movement control unit 104C moves the position of the spindle nozzle 56 with respect to the work holder 20 so that the movement path of the spindle nozzle 56 with respect to the work holder 20 draws a scanning line.

The reversing control unit 104D controls the rotating device 40 so that the second surface 1B of the workpiece 1 is ejected from the main shaft nozzle 56 while the main shaft air blow device 55 is injecting air under the control of the first blow control unit 104A. The posture of the work holder 20 is changed so that it faces the direction of . As a result, after cleaning the first surface 1A of the object 1, the second surface 1B is cleaned. The dust collector 111 is driven during work cleaning.

The processing chamber cleaning unit 105 cleans the processing chamber 120 after cutting and cleaning the workpiece. However, the processing chamber cleaning unit 105 does not necessarily have to clean the processing chamber 120 before cleaning the workpiece, as long as the cutting processing is completed. As shown in FIG. 11, the processing chamber cleaning section 105 includes a second blow control section 105A, a second attitude control section 105B, and a second movement control section 105C.

The second blow control unit 105A controls the spindle air blow device 55 to inject air into the processing chamber 120 after the cutting of the workpiece 1 is finished. The second posture control unit 105B operates to operate the spindle air blow device under the control of the second blow control unit 105A after the cutting of the object 1 to be cut is finished (here, after the work cleaning by the control of the work cleaning unit 104). 55 controls the rotation device 40 before injecting air, and sets the posture of the work holder 20 to a predetermined posture. The control of the main shaft air blow device 55 by the first blow control section 104A and the control of the main shaft air blow device 55 by the control of the second blow control section 105A may be performed continuously. That is, air injection may be continued during the workpiece cleaning and the processing chamber cleaning.

In this embodiment, the predetermined posture of the work holder 20 is such that the two opposing surfaces 1A and 1B of the workpiece 1 held by the work holder 20 are inclined with respect to the bottom wall 120D of the processing chamber 120. Posture. More specifically, the predetermined attitude of the work holder 20 is such that the two opposing surfaces 1A and 1B of the workpiece 1 held by the work holder 20 are downwardly inclined forward. As a result, the air jetted from the spindle air blow device 55 flows along the workpiece 1 and the adapter 5 held by the work holder 20, and is directed mainly obliquely forward and downward. In cleaning the processing chamber 120 according to this embodiment, the direction of the air flowing through the processing chamber 120 is controlled by controlling the attitude of the work holder 20 .

The second movement control unit 105C controls the Y-axis direction movement device 60Y to move the main shaft nozzle 56 to the left or right while the main shaft air blow device 55 is blowing air under the control of the second blow control unit 105A. move to As a result, the airflow directed obliquely downward and forward, which is generated by controlling the posture of the work holder 20, moves leftward or rightward. As a result, cleaning of the processing chamber 120 proceeds leftward or rightward.

In the processing chamber cleaning, the second blow control unit 105A also controls the top surface air blow device 93 and the bottom surface air blow device 94 to cause them to blow air. Specifically, the second blow control unit 105A controls the top surface air blow device 93 and the bottom surface air blow device 94 to jet air from the top surface nozzle 93N and the bottom surface nozzle 94N, respectively, and then controls the spindle air blow device 55. Air is injected into the processing chamber 120 . Furthermore, the second blow control unit 105A controls the spindle air blow device 55 to blow air into the processing chamber 120, and then controls the top surface air blow device 93 and the bottom surface air blow device 94 to blow air. The second attitude control unit 105B may change the direction of the air once or more by changing the attitude of the work holder 20 once or more during the cleaning of the processing chamber. The dust collector 111 is also driven during the cleaning of the processing chamber.

[Overall process]
A process including setting the workpiece 1 and the cutting tool 6 to the cutting machine 10, machining the workpiece 1, and cleaning the workpiece 1 and the machining chamber 120 will be described below. FIG. 12 is a flow chart of the overall process. As shown in FIG. 12, in step S10 of the process of cutting the workpiece 1, the cutting tool 6 is stored in the tool stocker 80. As shown in FIG. Step S10 is performed by the user. The user opens the tool exchange chamber door 181 and stores the cutting tool 6 in the storage hole 81 of the tool stocker 80 . In step S<b>20 , the adapter 5 to which the object 1 to be cut is attached (the step of attaching the object 1 to be cut to the adapter 5 is omitted) is stored in the storage space 71 a of the adapter storage portion 71 . Step S20 is also performed by the user. The user opens the changer chamber door 171 and stores the cutting tool 6 in the adapter storage portion 71 . Steps S10 and S20 may be performed in reverse order.

In the subsequent step S30, one of the adapters 5 housed in the work changer 70 is attached to the work holder 20. In step S<b>30 , the adapter storage portion 71 is transported into the processing chamber 120 by the transport device 72 . After that, the holder moving device 30 moves the work holder 20 forward in the X-axis direction, and the adapter 5 is attached to the work holder 20 . When the adapter 5 is attached to the work holder 20, the work holder 20 moves rearward in the X-axis direction. As a result, the workpiece 1 mounted on the work holder 20 is moved below the cutting device chamber 150 . After that, the adapter storage portion 71 is returned to the changer chamber 170 .

In step S40, one of the cutting tools 6 stored in the tool stocker 80 is gripped by the gripping portion 53 of the cutting device 50. In step S40, the holder moving device 30 moves the tool stocker 80 to the tool gripping position P1 (see FIG. 7). Furthermore, the Y-axis direction moving device 60Y moves the cutting device 50 to a position above the tool gripping position P1. In this state, the Z-axis direction moving device 60Z is driven to lower the cutting device 50 to the working position Po set as a position where the gripping portion 53 grips or releases the cutting tool 6. FIG. This allows the cutting device 50 to grip the cutting tool 6 of the tool stocker 80 . At this time, as shown in FIG. 10, the spindle nozzle 56 abuts against the tool stocker 80 and is pushed upward in the Z-axis direction by the tool stocker 80 . As a result, the main shaft nozzle 56 moves upward in the Z-axis direction against the biasing force of the biasing member 58 .

When the cutting tool 6 is completely gripped, the Z-axis direction moving device 60Z moves the spindle nozzle 56 above the rear side opening 125. This allows the cutting device 50 to move in the Y-axis direction. Also, the main shaft nozzle 56 returns to the lower end position Pd due to the biasing of the biasing member 58 . After that, the cutting device 50 is moved above the processing chamber 120 . Note that steps S30 and S40 may be performed in the reverse order.

In step S50, the object 1 to be cut is cut, and the object to be machined is cut out. In step S50, the holder moving device 30, the Y-axis direction moving device 60Y, and the Z-axis direction moving device 60Z are driven to change the relative position between the cutting tool 6 and the workpiece 1, and the rotating device 40 is driven. and the posture of the object 1 to be cut is changed. The cutting tool 6 is appropriately replaced with a designated one by the same procedure as in step S40. This completes the processed object. In step S<b>50 , air is jetted from the spindle air blower 55 so that the cutting dust generated by cutting does not adhere to the workpiece 1 , the adapter 5 and the cutting tool 6 . Also, during step S50, the dust collector 111 is driven.

In step S60, work cleaning is performed. In step S70, processing chamber cleaning is performed. Details of steps S60 and S70 will be described later. In step S80, the workpiece 1 that has been cut is returned to the changer chamber 170 together with the adapter 5. As shown in FIG. In step S80, each unit operates in the reverse order of step S30. Through these steps S10 to S80, the object to be machined is obtained from the object 1 to be cut, and cutting dust is removed from the object to be machined, the adapter 5 and the machining chamber 120. FIG.

[Work cleaning process]
Details of the workpiece cleaning in step S60 will be described below. FIG. 13 is a flowchart of work cleaning. As shown in FIG. 13, in the work cleaning step S61, the rotating device 40 is driven so that the first surface 1A and the second surface 1B of the workpiece 1 are orthogonal to the direction of air jetting from the spindle nozzle 56. The attitude of the work holder 20 is changed. FIG. 14 is a side view showing the work holder 20 during work cleaning. As shown in FIG. 14, here, the attitude of the work holder 20 is changed so that the first surface 1A and the second surface 1B of the workpiece 1 are substantially horizontal.

As shown in FIG. 13, in the subsequent step S62, the workpiece holder 20 and the spindle nozzle 56 are moved to the workpiece cleaning start position. The order of steps S61 and S62 may be reversed. FIG. 15 is a plan view of the work holder 20 showing the work cleaning procedure. An arrow L1 in FIG. 15 indicates the movement path of the spindle nozzle 56 with respect to the work holder 20. As shown in FIG. Hereinafter, the position in work cleaning is represented as the position of the adapter 5 overlapping the spindle nozzle 56 in plan view. As shown in FIG. 15, the work cleaning start position is the left front corner of the adapter 5 . However, the workpiece cleaning start position may be the front right corner, the rear left corner, or the rear right corner of the adapter 5 . In step S63, air is jetted from the main shaft nozzle 56. As shown in FIG.

In step S64, the spindle nozzle 56 is moved to the right front corner of the adapter 5. As a result, the cutting dust between the left front corner and the right front corner of the adapter 5 is removed. In step S65, the work holder 20 is moved forward in the X-axis direction. As a result, the position where the air jetted from the spindle nozzle 56 hits moves to the rear side of the adapter 5 . The amount of movement of the work holder 20 in step S65 is preferably equal to or less than the length of the spindle nozzle 56 in the X-axis direction. In step S66, the spindle nozzle 56 is moved leftward until it reaches the left edge of the adapter 5. As shown in FIG. As a result, cutting dust is removed from the right edge to the left edge of the adapter 5 along the moving path L1 of the spindle nozzle 56 . Although not shown, the above motion is repeated until the entire area of the adapter 5 is scanned. Thus, in the work cleaning, the position of the spindle nozzle 56 is moved with respect to the work holder 20 so that the movement path L1 of the spindle nozzle 56 with respect to the work holder 20 draws a scanning line. As a result, the entire area of the adapter 5 on the side of the first surface 1A is cleaned.

In the subsequent step S67, the rotating device 40 is driven to rotate the work holder 20 by 180 degrees around the A axis. As a result, the adapter 5 is turned over so that the second surface 1B of the workpiece 1 faces the spindle nozzle 56 . In step S68, the reverse operations of steps S64 to S66 are performed, and the spindle nozzle 56 returns to the work cleaning start position while drawing a scanning line. As a result, the entire area on the second surface 1B side of the adapter 5 is cleaned. Work cleaning is thereby completed.

[Process of cleaning the processing chamber]
Next, the details of the processing chamber cleaning in step S70 will be described. FIG. 16 is a flowchart of processing chamber cleaning. As shown in FIG. 16, in the processing chamber cleaning step S71, the top air blow device 93 and the bottom air blow device 94 are driven, and air is jetted from the top nozzle 93N and the bottom nozzle 94N. As a result, the cutting dust adhering to the top wall 120U and the rear wall 120Rr is brushed off, and the cutting dust on the bottom wall 120D is collected toward the exhaust port 128. Most of the shavings removed from the ceiling wall 120U and the rear wall 120Rr, and most of the collected shavings on the bottom wall 120D, pass through the exhaust port formed along the connecting portion between the bottom wall 120D and the rear wall 120Rr. Sucked into 128. At the end of step S71, the jetting of air from the top nozzle 93N and the bottom nozzle 94N is stopped.

In the subsequent step S72, the rotation device 40 is driven to change the posture of the work holder 20 so that the two opposing surfaces 1A and 1B of the workpiece 1 are inclined downward toward the front. Step S72 may be performed before step S71. FIG. 17 is a cross-sectional view of the cutting machine 10 during cleaning of the machining chamber. As shown in FIG. 17, step S72 takes the adapter 5 into a predetermined posture in which the front end portion is positioned lower than the rear end portion. As a result, the two opposing surfaces 1A and 1B of the workpiece 1 are inclined with respect to the bottom wall 120D of the processing chamber 120. As shown in FIG. In step S<b>73 , air is jetted from the spindle nozzle 56 toward the work holder 20 . When the air is jetted toward the work holder 20, as shown by arrow F6 in FIG. , the direction of the air changes. Here, the work holder 20 is oriented such that the two opposing surfaces 1A and 1B of the workpiece 1 are inclined downward toward the front. Therefore, as shown by the air flow F6 in FIG. 17, the air jetted downward from the main shaft nozzle 56 mainly changes its direction obliquely forward and downward. In addition, depending on the shape of the work holder 20, the adapter 5, and the workpiece 1, the direction of the air changes so as to scatter. The air that has changed its direction forward and obliquely downward is changed again along the bottom wall 120D by the front wall 120F of the processing chamber 120 and the processing chamber door 122 so as to move rearward. Most of the cutting dust and the like that were collected near the exhaust port 128 in step S71 but were not sucked into the exhaust port 128 are pushed into the exhaust port 128 by the air flow F6 that is turned rearward.

In step S74, the Y-axis direction moving device 60Y is driven to move the main nozzle 56 to the right. The movement of this spindle nozzle 56 may be to the left. Due to this movement of the spindle nozzle 56 , cutting powder or the like is pushed into the exhaust port 128 over a wide range in the left-right direction of the machining chamber 120 . At the end of step S74, the injection of air from the main shaft nozzle 56 is stopped.

However, the posture of the work holder 20 during cleaning of the processing chamber is not limited to the posture described above. During cleaning of the processing chamber, the work holder 20 may take another posture such that the two opposing surfaces 1A and 1B of the workpiece 1 are inclined with respect to the bottom wall 120D of the processing chamber 120, for example. During cleaning of the processing chamber, the work holder 20 may, for example, be oriented such that the left end or right end of the adapter 5 is positioned lower than the right end or left end. According to such a posture, the air hitting the adapter 5 and the workpiece 1 changes its direction and moves toward the left side wall 120L or the right side wall 120R of the processing chamber 120 . Thereby, the left side wall 120L or the right side wall 120R is cleaned. The posture of the work holder 20 may be changed during cleaning of the processing chamber so that the direction of the wind changes.

In step S75, the top air blow device 93 and the bottom air blow device 94 are driven again, and air is jetted from the top nozzle 93N and the bottom nozzle 94N. As a result, most of the cutting powder still remaining in the processing chamber 120 is pushed into the exhaust port 128 . At the end of step S75, the jetting of air from the top surface nozzle 93N and the bottom surface nozzle 94N is stopped. With step S75, the processing chamber cleaning ends. The machining chamber cleaning removes most of the cutting powder generated in the machining chamber 120 by cutting the workpiece 1 .

[Function of slope and dust collection chamber]
The functions of the slope 127 and the dust collection chamber 90 are described below. As described above, the slope 127 is provided for sorting out large fragments of the object 1 to be cut which are generated by cutting the object 1 to be cut. This prevents debris that is too large from moving to the exhaust port 128 and blocking the exhaust port 128 . Similarly, even if the workpiece 1 being cut falls from the adapter 5 , the slope 127 prevents the workpiece 1 from being sucked into the exhaust port 128 . In the present embodiment, the slope 127 prevents objects that are too large or the workpiece 1 to be cut from being sucked into the exhaust port 128, so the exhaust port 128 is not provided with a mesh or the like to prevent foreign matter from passing through. . Therefore, the exhaust capacity of the cutting machine 10 is also improved.

The dust collection chamber 90 is provided so that large-sized objects such as large fragments of the workpiece 1 do not directly enter the exhaust duct 92 . If such a large object directly enters the exhaust duct 92, the exhaust duct 92 may be clogged. Dust collection chamber 90 prevents clogging of exhaust duct 92 by, for example, once receiving such objects. In order to further suppress clogging of the exhaust duct 92 , the opening direction of the duct connection hole 91 to which the exhaust duct 92 is connected intersects the opening direction of the exhaust port 128 . Further, in this embodiment, the exhaust port 128 is configured to be smaller than the internal space of the dust collection chamber 90 in plan view. This increases the speed of the exhaust passing through the exhaust port 128 . Therefore, the exhaust capacity of the cutting machine 10 is improved.

[Action and effect of the embodiment]
The effects of the cutting machine 10 according to this embodiment will be described below.

A cutting machine 10 according to this embodiment includes a work holder 20 that holds an object 1 to be cut, a machining chamber 120 that accommodates the work holder 20, and a cutting device that cuts the object 1 to be cut held by the work holder 20. 50 , a spindle moving device 60 for moving the cutting device 50 , a cutting device chamber 150 , an exhaust duct 92 communicating with the machining chamber 120 , and an air inlet 152 communicating with the cutting device chamber 150 . The cutting device chamber 150 has a wall portion (a ceiling wall 120U of the processing chamber 120) that separates it from the processing chamber 120, and a rear portion that opens to the ceiling wall 120U of the processing chamber 120 and allows at least a portion of the cutting device 50 to pass therethrough. and a side opening 125 to accommodate the spindle movement device 60 . According to such a configuration, as described above, the airflow F3 (see FIG. 3) is generated from the intake port 152 toward the processing chamber 120 via the cutting device chamber 150 . The internal pressure of the cutting device chamber 150 is higher than the internal pressure of the processing chamber 120 . Therefore, cutting powder and the like generated in the processing chamber 120 are prevented from entering the cutting device chamber 150 via the rear opening 125 . The cutting device chamber 150 accommodates the cutting device 50 and the spindle moving device 60 which have movable parts and which should be dust-free as much as possible. According to such a configuration, it is possible to suppress the occurrence of problems in the cutting device 50 or the spindle moving device 60 due to the cutting powder or the like generated in the machining chamber 120 adhering to the cutting device 50 or the spindle moving device 60 .

The cutting machine 10 according to the present embodiment includes an adapter storage portion 71 capable of storing a plurality of objects 1 to be cut, and at least one of the plurality of objects 1 to be cut stored in the adapter storage portion 71. 1 to the processing chamber 120; The cutting machine 10 further includes a wall portion (a ceiling wall 120U of the processing chamber 120) that partitions the processing chamber 120, and an object to be cut that opens into the ceiling wall 120U of the processing chamber 120 and is conveyed by the conveying device 72. 1 and a changer chamber 170 that accommodates the adapter storage portion 71 . The intake port 152 also communicates with the changer chamber 170 . According to such a configuration, as described above, it becomes difficult for the cutting powder and the like generated in the processing chamber 120 to enter the changer chamber 170 . Therefore, it is possible to suppress the occurrence of problems in the work changer 70 due to adhesion of cutting powder or the like generated in the processing chamber 120 to the work changer 70 .

In this embodiment, the transport device 72 transports the adapter storage section 71 to the processing chamber 120 . In such a configuration, it is necessary to configure the front side opening 124 for taking the adapter storage section 71 into and out of the processing chamber 120 relatively large. Therefore, there is a high possibility that cutting powder or the like generated in the processing chamber 120 will enter the changer chamber 170 unless special measures are taken. Therefore, for such a configuration, there is a great advantage in generating the air flow F4 from the intake port 152 to the processing chamber 120 via the changer chamber 170 .

The cutting machine 10 according to this embodiment includes a support arm 31 that supports the work holder 20 and a holder moving device 30 that moves the work holder 20 by moving the support arm 31 . The cutting machine 10 further includes a wall portion (a right side wall 120R of the processing chamber 120) that separates it from the processing chamber 120, and an opening in the right side wall 120R of the processing chamber 120 through which the support arm 31 of the holder moving device 30 is inserted. and a drive device chamber 130 that accommodates at least a portion of the holder moving device 30 . The intake port 152 also communicates with the drive chamber 130 . According to such a configuration, as described above, it becomes difficult for the cutting powder and the like generated in the processing chamber 120 to enter the driving device chamber 130 . Therefore, it is possible to suppress the occurrence of problems in the holder moving device 30 due to the cutting powder or the like generated in the processing chamber 120 adhering to the holder moving device 30 .

The cutting machine 10 according to this embodiment includes a dustproof plate 36 fixed to the support arm 31 of the holder moving device 30 . The dustproof plate 36 is provided so as to cover at least part of the slit 123 and moves in the X-axis direction together with the support arm 31 . According to such a configuration, the simple configuration of the dust-proof plate 36 can further suppress intrusion of cutting powder and the like generated in the processing chamber 120 into the driving device chamber 130 . Since the structure of the dustproof plate 36 is simple, the cost can be easily reduced.

In this embodiment, the dust-proof plate 36 is fixed to a portion of the support arm 31 located inside the processing chamber 120 and provided inside the processing chamber 120 . With such a configuration, the dust-proof plate 36 exerts its effect within the processing chamber 120 . Therefore, it is possible to prevent cutting powder and the like from approaching the slit 123 in advance.

In the present embodiment, the exhaust port 128 opens in a portion (here, the rear end portion of the bottom wall 120D) of the plurality of wall portions of the processing chamber 120 located on the rear side of the work holder 20 in the X-axis direction. The dust-proof plate 36 is configured to cover the rear end of the slit 123 when the work holder 20 is positioned within the movement range during cutting. According to this configuration, the rear end of the slit 123 is covered with the dust-proof plate 36 during cutting of the object 1 to be cut. In the processing chamber 120, the arrangement of the exhaust port 128 causes the air to flow backward. Therefore, cutting powder is also likely to flow backward from the work holder 20 . By covering the rear end of the slit 123 while the object 1 is being cut, the effect of suppressing the intrusion of cutting dust and the like into the drive device chamber 130 can be enhanced.

On the other hand, the dust-proof plate 36 is positioned rearward of the front end of the slit 123 when the work holder 20 is positioned within the movement range during cutting. That is, at this time, the dust-proof plate 36 does not cover the front portion of the slit 123 . Since the wind flows backward in the processing chamber 120, even if the front portion of the slit 123 is not covered with the dustproof plate 36, the dustproof effect of the dustproof plate 36 is unlikely to be impaired. Conversely, by appropriately opening a part of the slit 123, air flows from the drive device chamber 130 to the processing chamber 120, improving the dustproof effect. Furthermore, according to such a configuration, the length of the dust-proof plate 36 in the X-axis direction can be shortened, so it is possible to suppress the length of the processing chamber 120 in the X-axis direction from increasing.

The cutting machine 10 according to the present embodiment has a ceiling air blow device 93 having a ceiling nozzle 93N for blowing air along the ceiling wall 120U of the machining chamber 120. According to the top surface air blow device 93 , air jetted from the top surface nozzle 93</b>N flows along the top wall 120</b>U of the processing chamber 120 . Therefore, it is possible to effectively remove cutting powder and the like adhering to the ceiling wall 120U of the processing chamber 120, which was difficult to remove in the conventional art.

In this embodiment, the exhaust port 128 is open to the bottom wall 120D of the processing chamber 120, and the top surface nozzle 93N is arranged along the top wall 120U and the rear wall 120Rr of the processing chamber 120 so as to reach the exhaust port 128. Inject air. According to such a configuration, it is possible to push into the exhaust port 128 the cutting powder and the like adhering to the rear wall 120Rr together with the cutting powder and the like adhering to the top wall 120U.

In this embodiment, the exhaust port 128 is opened along the connecting portion of the bottom wall 120D with the rear wall 120Rr. According to such a configuration, the air that is jetted from the ceiling nozzle 93N and flows along the ceiling wall 120U and the rear wall 120Rr smoothly flows into the exhaust port 128. As shown in FIG. Therefore, exhaust efficiency is good.

The cutting machine 10 according to this embodiment has a bottom air blow device 94 having a bottom nozzle 94N for blowing air along the bottom wall 120D of the machining chamber 120 so as to reach the exhaust port 128. According to such a configuration, it is possible to effectively remove cutting dust and the like on the bottom wall 120D of the processing chamber 120. As shown in FIG.

In this embodiment, the bottom nozzle 94N is provided above the bottom wall 120D of the processing chamber 120, and jets air obliquely downward toward the bottom wall 120D and toward the exhaust port 128 side. do. According to such a configuration, as described above, the air spreads in the width direction (horizontal direction in this embodiment) of the bottom wall 120D by hitting the bottom wall 120D. This makes it possible to clean a wider range than the width of the bottom nozzle 94N in the width direction of the bottom wall 120D.

In this embodiment, the drive device chamber 130 in which the holder moving device 30 is housed is provided to the right of the processing chamber 120 . The top surface nozzle 93N and the exhaust port 128 are provided so as to deviate to the right of the center line CL of the processing chamber 120 in the left-right direction. According to such a configuration, it is possible to intensively remove cutting dust and the like on the drive device chamber 130 side in which the holder moving device 30 is accommodated. Therefore, even with such a configuration, it is possible to suppress the occurrence of problems in the holder moving device 30 due to adhesion of cutting powder or the like generated in the processing chamber 120 to the holder moving device 30 .

In this embodiment, the Z-axis direction moving device 60Z can move the cutting device 50 to a position where at least part of it is located above the work holder 20 and below the ceiling wall 120U of the processing chamber 120. configured as possible. The ceiling nozzle 93N injects air toward the cutting device 50 moved to the position described above (that is, projected downward from the ceiling wall 120U). According to such a configuration, air can be jetted to the cutting device 50 on which cutting dust has fallen due to the cutting of the object 1 to remove the cutting dust.

In this embodiment, the bottom wall 120</b>D of the processing chamber 120 is provided with an exhaust port 128 and has a slope 127 that slopes upward toward the exhaust port 128 . According to such a configuration, large fragments of the workpiece 1 that have fallen onto the bottom wall 120D of the processing chamber 120 cannot climb the slope 127 even if they are sucked from the exhaust port 128, or they cannot climb the slope 127. Even if it falls, it slides down the slope 127 . Therefore, large fragments are not sucked into the exhaust port 128 . Therefore, according to the cutting machine 10 of the present embodiment, even if the object 1 to be cut contains large fragments, the exhaust of the machining chamber 120 is less likely to be obstructed. Moreover, according to such a configuration, even if the object 1 to be cut falls off the adapter 5 , the object 1 to be cut can be prevented from being sucked into the exhaust port 128 . Although the slope 127 is a part of the bottom wall 120D in this embodiment, it may be the entire bottom wall 120D.

In this embodiment, the bottom wall 120D of the processing chamber 120 has a bottom portion 126 connected to the slope 127 so as to bend with respect to the slope 127. With such a configuration, fragments or the like that have slid down the slope 127 are likely to stop at the boundary between the slope 127 and the bottom portion 126 . Therefore, it is easy for the user to collect debris that has slid down the slope 127 . For example, when the entire bottom wall 120D of the processing chamber 120 is the slope 127, fragments and the like that slide down the slope 127 accumulate in the lower front corner of the processing chamber 120 formed by the bottom wall 120D and the front wall 120F. Cheap. This makes it difficult for the user to collect debris that has slid down the slope 127 . Here, the bottom portion 126 is configured substantially horizontally. By making the bottom portion 126 approximately horizontal, it is possible to achieve both ease of stopping falling objects and visibility of the boundary portion between the slope 127 and the bottom portion 126 . However, the bottom portion 126 may be a slope having a gentler upward slope than the slope 127, or a reverse slope that descends rearward, instead of being a substantially horizontal surface.

In this embodiment, at least part of the slope 127 overlaps at least part of the work holder 20 in plan view. According to such a configuration, fragments of the object to be cut 1 and the object to be processed that have fallen off the work holder 20 fall onto the slope 127 .

In this embodiment, the slope 127 is connected to the rear wall 120Rr of the processing chamber 120, and the rear edge of the exhaust port 128 is formed by the rear wall 120Rr. With such a configuration, the exhaust port 128 is arranged at the rearmost part of the slope 127 and the processing chamber 120 . Therefore, the cutting powder or the like drawn to the exhaust port 128 does not overrun behind the exhaust port 128 . Therefore, cutting dust and the like can be efficiently collected.

The cutting machine 10 according to this embodiment includes a box-shaped dust collection chamber 90 and an exhaust duct 92 connected to a duct connection hole 91 . An upper opening 90U and a duct connection hole 91 are formed in the dust collection chamber 90 , and the upper opening 90U is connected to the exhaust port 128 . With such a configuration, as described above, it is possible to prevent large-sized objects such as large fragments of the object 1 to be cut from directly entering the exhaust duct 92 . As a result, clogging of the exhaust duct 92 can be suppressed.

In this embodiment, the exhaust port 128 is open upward, and the upper opening 90U of the dust collection chamber 90 is also open upward. A dust collection chamber 90 is provided below the exhaust port 128 . According to such a configuration, cutting powder or the like naturally falls into the dust collection chamber 90 from the exhaust port 128 and the upper opening 90U. Therefore, dust collection efficiency is good. Note that the exhaust port 128 does not necessarily have to be open facing forward, for example, and the dust collection chamber 90 does not necessarily have to be provided above the exhaust port 128, for example.

In this embodiment, the duct connection hole 91 opens in the side wall (here, the rear wall) of the dust collection chamber. According to such a configuration, the opening direction of the duct connection hole 91 and the opening direction of the exhaust port 128 intersect. Therefore, it is possible to further prevent large-sized objects such as large fragments of the object 1 to be cut from directly entering the exhaust duct 92 .

In this embodiment, the dust collection chamber 90 has an internal space that is larger than the exhaust port 128 in plan view. In other words, the exhaust port 128 is configured to be smaller than the internal space of the dust collection chamber 90 in plan view. As a result, as described above, the speed of the exhaust gas passing through the exhaust port 128 is increased, and the exhaust capacity of the cutting machine 10 is improved.

The cutting machine 10 according to the present embodiment includes a spindle air blow device 55 having a spindle nozzle 56 that injects air toward the work holder 20 . A control device 100 of the cutting machine 10 controls a cutting control unit 101 that controls the cutting device 50 to cut the object 1 to be cut, and after the cutting of the object 1 to be cut is completed, controls the spindle air blow device 55 to operate the work holder. and a first blow control unit 104A that injects air toward 20 . According to such a configuration, after the cutting of the object 1 to be cut is finished, the cutting dust adhering to the object 1 to be cut and the work holder 20 can be removed, and the object 1 to be cut and the work holder 20 can be cleaned. Note that the air blow device that injects air toward the work holder 20 is not limited to the device provided in the cutting device 50, and may be provided in any location.

The cutting machine 10 according to this embodiment includes a holder moving device 30 as a moving device for moving the position of the spindle nozzle 56 with respect to the work holder 20 and a Y-axis direction moving device 60Y. The control device 100 controls the holder moving device 30 and the Y-axis direction moving device 60Y to move the main shaft nozzle to the work holder 20 while the main shaft air blow device 55 is blowing air under the control of the first blow control unit 104A. 104 C of 1st movement control parts which move the position of 56 are provided. With this configuration, the position of the work holder 20 that is hit by the air can be moved, so that a wide range of the work holder 20 and the object 1 to be cut can be cleaned.

In this embodiment, the first movement control unit 104C moves the position of the spindle nozzle 56 with respect to the work holder 20 so that the movement path L1 of the spindle nozzle 56 with respect to the work holder 20 draws a scanning line. With such a configuration, the position of the work holder 20 that is hit by the air can be moved in a scanning line, so that the work holder 20 and the workpiece 1 do not have areas where the air is not blown.

The cutting machine 10 according to this embodiment includes a rotating device 40 that changes the posture of the work holder 20 by rotating the work holder 20 . The object 1 to be cut is configured in a flat plate shape having two opposing surfaces 1A and 1B. The main shaft nozzle 56 is configured to inject air in a predetermined injection direction (here, downward). Further, the first attitude control section 104B of the control device 100 controls the rotating device to rotate after the cutting of the workpiece 1 is completed and before the main shaft air blow device 55 injects air under the control of the first blow control section 104A. 40 is controlled to control the posture of the work holder 20 so that the two opposing surfaces 1A and 1B of the workpiece 1 intersect the jetting direction of the spindle nozzle 56 at a predetermined angle. According to such a configuration, air can be blown to the object 1 to be cut at an angle that facilitates removal of the cutting dust adhering to the two opposing surfaces 1A and 1B of the object 1 to be cut. The predetermined angle is 90 degrees here. By blowing the air perpendicularly onto the two opposing surfaces 1A and 1B of the object 1 to be cut, the wind speed, wind pressure, or air volume of the air can be utilized most efficiently. However, the angle between the two opposing surfaces 1A and 1B of the workpiece 1 and the injection direction of the spindle nozzle 56 is not limited to 90 degrees.

In the present embodiment, the first attitude control section 104B controls the rotating device 40 after the cutting of the workpiece 1 is finished and before the main shaft air blow device 55 injects air under the control of the first blow control section 104A. is controlled to control the posture of the work holder 20 so that the first surface 1A of the workpiece 1 faces the spindle nozzle 56. The reversing control unit 104D controls the rotating device 40 so that the second surface 1B of the workpiece 1 is ejected from the main shaft nozzle 56 while the main shaft air blow device 55 is injecting air under the control of the first blow control unit 104A. The posture of the work holder 20 is changed so that it faces the direction of . With such a configuration, both the first surface 1A of the object 1 to be cut and the second surface 1B, which is the back surface of the first surface 1A, can be cleaned. Note that "while the main shaft air blow device 55 is injecting air under the control of the first blow control unit 104A" means that the air injection is continuing at this time, and that the air injection is temporary at this time. It may include the case where it is temporarily stopped.

In this embodiment, the spindle nozzle 56 of the spindle air blow device 55 is also configured to inject air into the machining chamber 120 . The control device 100 includes a second blow control section 105A that controls the spindle air blow device 55 to inject air into the processing chamber 120 after the cutting of the workpiece 1 is finished. According to such a configuration, after the cutting of the object 1 to be cut is finished, the cutting powder adhering to the processing chamber 120 can be removed, and the processing chamber 120 can be cleaned. In this embodiment, processing chamber cleaning is performed after workpiece cleaning. However, either one of the processing chamber cleaning and the workpiece cleaning may be performed. Even when the processing chamber cleaning and the work cleaning are performed together, the order is not particularly limited.

The control device 100 according to the present embodiment controls the Y-axis direction moving device 60Y while the main shaft air blow device 55 is injecting air under the control of the second blow control unit 105A, thereby moving the main shaft nozzle toward the work holder 20. A second movement control unit 105C for moving the position of 56 is provided. With such a configuration, the location of the processing chamber 120 that is hit by the air can be moved, so that a wide range of the processing chamber 120 can be cleaned.

The control device 100 according to the present embodiment controls the rotating device 40 after the cutting of the workpiece 1 is completed and before the main shaft air blow device 55 blows air under the control of the second blow control section 105A. , and a second posture control unit 105B for setting the posture of the work holder 20 to a predetermined posture. The spindle nozzle 56 is configured to inject air toward the work holder 20 . According to such a configuration, the direction of the air can be changed by applying the air to the work holder 20, as described above in the explanation of the cleaning of the processing chamber. Therefore, air can be blown to a target location in the processing chamber 120 . In this embodiment, the posture of the work holder 20 is not changed during cleaning of the processing chamber, but may be changed once or multiple times.

In this embodiment, the spindle nozzle 56 is provided above the work holder 20 and configured to jet air downward. The predetermined attitude of the work holder 20 is such that the two opposing surfaces 1A and 1B of the workpiece 1 held by the work holder 20 are inclined with respect to the bottom wall 120D of the machining chamber 120. . As a result, the direction of the air after hitting the work holder 20 can be made to obliquely cross the bottom wall 120D. As a result, cutting powder and the like on the bottom wall 120D can be moved along the bottom wall 120D.

In this embodiment, the plurality of walls partitioning the processing chamber 120 includes a front wall 120F (which may include a processing chamber door 122) erected forward of the work holder 20, and the work holder The predetermined orientation of 20 is such that the two opposing surfaces 1A and 1B of the workpiece 1 held by the work holder 20 are inclined downward toward the front. According to such a configuration, the direction of the air after hitting the work holder 20 is initially forward, but changes to the rear by hitting the front wall 120F. As a result, the air reaches the front wall 120</b>F, which is the frontmost portion of the processing chamber 120 . Therefore, cleaning can be performed up to the frontmost part of the processing chamber 120 . In addition, after that, cutting powder and the like can be sent backward.

In this embodiment, the second movement control unit 105C controls the Y-axis direction movement device 60Y to move the main shaft nozzle 56 while the main shaft air blow device 55 is blowing air under the control of the second blow control unit 105A. Move left or right. As a result, cleaning up to the frontmost portion of the processing chamber 120 can be performed over a wide range in the left-right direction.

In this embodiment, the second blow control unit 105A controls the spindle air blow device 55 to inject air into the processing chamber 120, and then controls the top surface air blow device 93 and the bottom surface air blow device 94 to control the top surface nozzles. Air is jetted from 93N and the bottom nozzle 94N. According to such a configuration, the cutting dust and the like that may have been scattered in the machining chamber 120 by the air jet from the spindle air blow device 55 are carried to the exhaust port 128 by the air jet from the top nozzle 93N and the bottom nozzle 94N. be able to. Thereby, the inside of the processing chamber 120 can be further cleaned.

In this embodiment, the second blow control unit 105A also controls the top surface air blow device 93 and the bottom surface air blow device 94 to blow air before controlling the spindle air blow device 55 to inject air into the processing chamber 120. inject. According to such a configuration, after the ceiling wall 120U, the rear wall 120Rr, and the bottom wall 120D of the processing chamber 120 are generally cleaned by jetting air from the top nozzle 93N and the bottom nozzle 94N, the air from the spindle nozzle 56 is cleaned. to clean the processing chamber 120. By performing steps in this way, cutting powder adhering to the ceiling wall 120U, the rear wall 120Rr, and the bottom wall 120D is suppressed from being scattered by the air jet from the spindle nozzle 56. Thereby, the inside of the processing chamber 120 can be made cleaner.

In the cutting machine 10 according to this embodiment, the tool stocker 80 capable of storing a plurality of cutting tools 6 is housed in the driving device chamber 130 separated from the machining chamber 120 housing the work holder 20 . The cutting device 50 is configured to be able to grip each cutting tool 6 stored in the tool stocker 80 , and cuts the workpiece 1 held by the work holder 20 with the gripped cutting tool 6 . The spindle movement device 60 is configured to move the cutting device 50 between the drive device chamber 130 and the processing chamber 120 . According to such a configuration, it is possible to prevent the cutting powder generated in the machining chamber 120 from adhering to the cutting tools 6 stored in the tool stocker 80 . As a result, defects caused by the cutting powder adhering to the cutting tool 6, such as poor machining, can be suppressed. Although the tool stocker 80 is housed in the drive chamber 130 in this embodiment, it may be housed in another room separated from the processing chamber 120 .

In this embodiment, the drive device chamber 130 and the processing chamber 120 are arranged side by side in the Y-axis direction. The holder moving device 30 is connected to a support arm 31 that extends in the Y-axis direction and supports the work holder 20, and is housed in the drive device chamber 130 and is connected to the support arm 31, and is movable in the X-axis direction that intersects the Y-axis direction. and an X-axis direction driving motor 34 for moving the support arm 31 and the work holder 20 in the X-axis direction by moving the X-axis direction moving body 32 in the X-axis direction. ing. The tool stocker 80 is supported by the X-axis moving body 32 . With such a configuration, the support arm 31 does not support the tool stocker 80 . Therefore, the support arm 31 is less likely to bend. This improves the accuracy of cutting. In addition, since the cutting load applied to the support arm 31 through the workpiece 1 can be increased, the amount of cutting per hour can be increased. Thereby, the throughput of cutting can be increased.

In this embodiment, the cutting device 50 is provided above the work holder 20 and the tool stocker 80. The spindle moving device 60 includes a Y-axis direction moving device 60Y for moving the cutting device 50 in the Y-axis direction so that the cutting device 50 moves between the upper side of the driving device chamber 130 and the upper side of the processing chamber 120. there is The spindle moving device 60 also includes a Z-axis direction moving device 60Z for moving the cutting device 50 in the Z-axis direction. The holder moving device 30 is configured to be able to move the tool stocker 80 to the tool gripping position P1 set below the moving path of the cutting device 50 by the Y-axis direction moving device 60Y. According to this configuration, the cutting tool 6 stored in the tool stocker 80 can be gripped by the cutting device 50 and the cutting tool 6 can be returned to the tool stocker 80 by the procedure described in the embodiment.

In this embodiment, the holder moving device 30 is configured to be able to move the tool stocker 80 to the tool exchange position P2 set forward of the tool gripping position P1. The cutting machine 10 according to this embodiment includes a tool changing chamber 180 having an opening 183 that opens upward from the tool changing position P2. When the holder moving device 30 is driven to move the tool stocker 80 to the tool exchange position P2, the user stores the cutting tool 6 in the tool stocker 80 or removes the cutting tool 6 from the tool stocker 80 through the opening 183. can be pulled out. According to such a configuration, since the tool exchange chamber 180 is separated from the driving device chamber 130 , it is possible to prevent the user from touching the holder moving device 30 when exchanging the cutting tool 6 . In addition, foreign matter is prevented from entering the driving device chamber 130 when the cutting tool 6 is replaced.

In this embodiment, the tool stocker 80 has a plurality of storage holes 81 each capable of storing the cutting tool 6, and the plurality of storage holes 81 are arranged in a zigzag pattern. More specifically, the tool stocker 80 is formed with a plurality of rows in which some of the plurality of storage holes 81 are aligned in a predetermined alignment direction (here, left-right direction) (here, Five columns 81A to 81E), and two adjacent columns among the plurality of columns 81A to 81E are displaced in the alignment direction. According to such a configuration, it is possible to improve the storage efficiency of the cutting tool 6 with respect to the space.

The cutting machine 10 according to the present embodiment includes a gripping portion 53 that grips the cutting tool 6 so as to protrude downward in the Z-axis direction, a nozzle support member 57 that supports the spindle nozzle 56, and the spindle nozzle 56 that is biased. and a biasing member 58 . The nozzle support member 57 has an end position (lower end position) Pd on the lower side in the Z-axis direction set on the side of the grip portion 53, and another position above the lower end position Pd in the Z-axis direction. A spindle nozzle 56 is supported so as to be movable between positions. The biasing member 58 biases the main shaft nozzle 56 supported by the nozzle support member 57 to hold the main shaft nozzle 56 at the lower end position Pd. According to such a configuration, the spindle nozzle 56 is positioned at the lower end position Pd in the projecting direction of the cutting tool 6 by the biasing force of the biasing member 58 when it is not pushed by another member. Therefore, at this time, the distance between the spindle nozzle 56 and the cutting tool 6 is short. Therefore, the cutting tool 6 can be strongly blown with air. In addition, when the spindle nozzle 56 interferes with other members and is pushed upward, it resists the urging force of the urging member 58 and moves above the lower end position Pd, that is, in the direction opposite to the projecting direction of the cutting tool 6 . Move to another position in the direction. Therefore, according to the cutting machine 10 according to the present embodiment, the spindle nozzle 56 can be brought closer to the cutting tool 6, and the spindle nozzle 56 is less likely to be an obstacle.

In this embodiment, the spindle nozzle 56 moves from the lower end position Pd at least when the cutting tool 6 stored in the tool stocker 80 is gripped by the gripper 53 or released from the gripper 53 . In this embodiment, the Z-axis direction moving device 60Z moves the gripper 53 to a predetermined position (working position Po) in the Z-axis direction set to grip or release the cutting tool 6 stored in the tool stocker 80. It is configured to allow The spindle nozzle 56 contacts the tool stocker 80 when the gripping portion 53 is positioned at the working position Po. The main shaft nozzle 56 is thereby positioned above the lower end position Pd in the Z-axis direction against the biasing force of the biasing member 58 . Therefore, when the cutting tool 6 stored in the tool stocker 80 is gripped by the gripper 53 or released from the gripper 53, the spindle nozzle 56 does not interfere. In other words, the lower end position Pd can be set at a position where the spindle nozzle 56 contacts the tool stocker 80 , so the spindle nozzle 56 can be brought closer to the lower end of the cutting tool 6 .

In this embodiment, the main shaft nozzle 56 has a cut surface 56b formed on the side wall and extending obliquely in the Z-axis direction. According to such a configuration, when an object presses the cut surface 56b from the side, part of the pressing force is converted into an upward force in the Z-axis direction by the cut surface 56b. This causes the main shaft nozzle 56 to move upward. According to such a configuration, even when an object pushes the main shaft nozzle 56 from the side, the main shaft nozzle 56 can be moved.

[Other embodiments]
The cutting machine according to one embodiment has been described above. However, the technology disclosed herein can also be implemented in other ways. For example, in the above-described embodiment, the top air blow device 93 jets air in a direction toward the exhaust port 128, specifically backward, but the air jet direction of the top air blow device is Other directions are also possible. The top surface air blow device may inject air along the top surface of the processing chamber, and the direction of air injection is not limited.

In the above-described embodiment, the bottom nozzle 94N is configured to jet air obliquely downward toward the bottom wall 120D, but the air may be jetted substantially parallel to the bottom wall 120D. Although the ceiling nozzle 93N is configured to jet air substantially parallel to the ceiling wall 120U in the above-described embodiment, it may jet air obliquely upward toward the ceiling wall 120U.

The cutting machine does not have to be equipped with a bottom air blower. The cutting dust on the bottom surface may be discharged, for example, by the suction force of a dust collector.

The configuration of the cutting machine is not particularly limited. For example, the cutting machine may not have a work changer. Also, for example, the inside of the cutting machine may not be partitioned like the above-described embodiment.

In addition, the embodiments do not limit the present invention unless otherwise specified. For example, the milling machine need not be a dental milling machine for making dental moldings. The workpiece need not be held by the cutting machine via an adapter, and may be held directly by the cutting machine.

1 Workpiece to be cut 10 Cutting machine 20 Work holder (holding device)
30 holder moving device (driving device)
50 cutting device 60 spindle moving device (moving device)
93 Top surface air blow device (first air blow device)
93N top nozzle (first nozzle)
94 bottom air blow device (second air blow device)
94N bottom nozzle (second nozzle)
120 processing chamber 120D bottom wall 120Rr rear wall (side wall)
120U Ceiling wall 128 Exhaust port 130 Drive device room

Claims (7)

1. a holding device for holding an object to be cut;
   a cutting device for cutting the object to be cut;
   a processing chamber that is partitioned by a plurality of walls including a top wall arranged above the holding device and that houses the holding device;
   a first air blow device including a first nozzle that injects air along the ceiling wall of the processing chamber;
   cutting machine.
2. The plurality of wall portions are
   a bottom wall positioned below the holding device;
   a side wall erected to connect the top wall and the bottom wall,
   Further comprising an exhaust port opening in the bottom wall of the processing chamber,
   The first nozzle jets air along the ceiling wall and the side wall of the processing chamber so as to reach the exhaust port.
   The cutting machine according to claim 1.
3. The exhaust port opens along a portion of the bottom wall connected to the side wall,
   The cutting machine according to claim 2.
4. further comprising a second air blow device including a second nozzle that injects air along the bottom wall to reach the exhaust port;
   The cutting machine according to claim 2 or 3.
5. The second nozzle is provided above the bottom wall, and jets air obliquely downward toward the bottom wall and toward the exhaust port side.
   The cutting machine according to claim 4.
6. The exhaust port is provided behind the holding device,
   a driving device chamber provided on one side in the left-right direction of the processing chamber;
   a driving device at least partially disposed in the driving device chamber for supporting and moving the holding device;
   The first nozzle and the exhaust port are provided so as to be biased toward the one side from a center line in the left-right direction of the processing chamber,
   The cutting machine according to any one of claims 2-5.
7. further comprising a moving device capable of moving the cutting device to a position such that at least part of the cutting device is located above the holding device and below the top wall;
   The first nozzle injects air toward the cutting device moved to the position.
   The cutting machine according to any one of claims 1-6.

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