Cutting machine

Abstract

To provide a cutting machine which includes an exhaust port connected with a dust collector and an intake port for taking outside air into the machine and makes a level of cutting noise leaking from the intake port too low for a user to hear.SOLUTION: A cutting machine 10 includes: a cutting device 40 which cuts a cut object; a housing 20 which defines a processing chamber 21 in which the cutting device 40 is housed and includes an opening 21a at the front surface side; an exhaust port 60 which is configured to allow communication between the processing chamber 21 and the outside of the processing chamber 21 and connection with a dust collector 80A; a suction port 72 which allows communication between the processing chamber 21 and the outside of the processing chamber 21; and a door 25 which is provided at the opening 21a and may open or close the opening 21a. The suction port 72 is open on a back surface of the housing 20.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a cutting machine. [Background technology]

[0002] Cutting machines that cut a workpiece to produce, for example, dental molded products have been known for some time. Some cutting machines can be connected to a dust collector to collect cutting powder generated by cutting. For example, Patent Document 1 discloses a cutting machine that has an exhaust port that communicates with the processing chamber and is connected to the dust collector, and an intake port that communicates with the processing chamber. The intake port is for taking in air into the processing chamber from which the air has been discharged by the dust collector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-146217 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the cutting machine described in Patent Document 1, the air intake is located on the top surface of the case of the cutting machine, more specifically, on the front side of the top surface of the case. If the air intake is located in this manner, the cutting noise leaking from the air intake during cutting may be loudly heard by the user of the cutting machine, which may cause discomfort to the user.

[0005] The present invention has been made in consideration of such problems, and its object is to provide a cutting machine that has an exhaust port to which a dust collector is connected and an intake port that takes in outside air, and in which cutting sounds leaking from the intake port are difficult for the user to hear. [Means for solving the problem]

[0006] The cutting machine disclosed herein includes a cutting device that cuts a workpiece, a housing that defines a processing chamber in which the cutting device is housed and has an opening on the front side, an exhaust port that communicates the processing chamber with the outside of the processing chamber and is configured to be connectable to a dust collector, an intake port that communicates the processing chamber with the outside of the processing chamber, and a door that is provided at the opening and can open and close the opening. The intake port opens to the back side of the housing.

[0007] According to the cutting machine, since the air intake is located on the rear surface of the housing, cutting noise leaking from the air intake is less likely to be heard by the user. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view of a cutting machine according to an embodiment; [Diagram 2] FIG. 2 is a plan view of the workpiece and the adapter. [Diagram 3] FIG. 2 is a perspective view showing the cutting machine with parts such as a case and a front cover removed. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, a cutting machine according to one embodiment will be described with reference to the drawings. Note that the embodiment described here is not intended to limit the present invention. Also, the same reference numerals are used for members and parts that perform the same functions, and duplicated descriptions are omitted or simplified as appropriate.

[0010] [Cutting machine configuration] 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 referred to as the front, and the side approaching the cutting machine 10 is referred to as the rear. The terms left, right, top, and bottom refer to the left, right, top, and bottom of the cutting machine 10 when viewed from the front. Also, the symbols F, Rr, L, R, U, and D in the drawings refer to the front, rear, left, right, top, and bottom, respectively.

[0011] The cutting machine 10 according to this embodiment is a cutting machine that cuts a disk-shaped workpiece held by an adaptor. FIG. 2 is a plan view of the workpiece 1 and the adaptor 5. The cutting machine 10 is a device that cuts the workpiece 1 to produce dental molded products, such as crowns, bridges, copings, inlays, onlays, veneers, custom abutments, and other dental prostheses, as well as artificial teeth and denture bases. The cutting machine 10 according to this embodiment is a dry-type cutting machine that does not use a coolant.

[0012] The workpiece 1 is made of, for example, resin such as PMMA, PEEK, glass fiber reinforced resin, hybrid resin, etc., ceramic material such as glass ceramics, zirconia, etc., metal material such as cobalt chrome sintered metal, wax, gypsum, etc. When zirconia is used as the material of the workpiece 1, for example, semi-sintered zirconia is used. The shape of the workpiece 1 here is disk-shaped (disk-shaped). However, the workpiece 1 may be of other shapes, for example, block-shaped (for example, cube-shaped or rectangular parallelepiped-shaped), etc.

[0013] The adapter 5 holds the disk-shaped workpiece 1. In this embodiment, the adapter 5 is a flat adapter having a substantially circular insertion hole 5a formed in the center thereof, the insertion hole 5a corresponding to the workpiece 1. The workpiece 1 is inserted into the insertion hole 5a and held by the adapter 5. The workpiece 1 held by the adapter 5 is housed in the cutting machine 10 and processed.

[0014] As shown in FIG. 1, the cutting machine 10 has a housing 20 configured in a box shape. FIG. 3 is a perspective view showing the cutting machine 10 with parts such as a case and a front cover removed. As shown in FIG. 3, the housing 20 divides a processing chamber 21, a storage chamber 22, and a cleaning chamber 23. The processing chamber 21 is an area in which the workpiece 1 is cut. The storage chamber 22 is configured to be able to store a plurality of adapters 5. The storage chamber 22 is an area in which the workpiece 1 held by the adapter 5 is stored in order to continuously process a plurality of workpieces 1. The cleaning chamber 23 is an area in which cutting powder is removed from the workpiece 1 after cutting and the adapter 5 that holds it. Although not shown, the cleaning chamber 23 is provided with an air blow device for removing cutting powder. In addition, a dust collector 80B for collecting cutting powder is connected to the cleaning chamber 23 (see FIG. 5). The workpiece 1 to be cut is transported from the storage chamber 22 to the processing chamber 21, and after the cutting process is completed, is returned to the storage chamber 22 via the cleaning chamber 23. As shown in FIG. 3, the cutting machine 10 includes a transport device 30 that transports the adapter 5 to the processing chamber 21, the cleaning chamber 23, and the storage chamber 22.

[0015] As shown in Fig. 3, the accommodation chamber 22 is provided in the left portion of the cutting machine 10. The accommodation chamber 22 extends in the vertical direction. A plurality of adapter accommodation sections 24 for accommodating the adapter 5 are provided in the accommodation chamber 22. The plurality of adapter accommodation sections 24 are arranged in the vertical direction along the right wall of the accommodation chamber 22. The plurality of adapter accommodation sections 24 are configured like shelves arranged in the vertical direction. Each adapter accommodation section 24 is configured so that an adapter 5 supported substantially horizontally can be placed thereon.

[0016] The accommodation chamber 22 is provided with a conveying device 30. The conveying device 30 is disposed to the left of the multiple adapter accommodation sections 24. The conveying device 30 includes a clamp 31, a clamp storage section 32, and a lifting mechanism 33. The clamp 31 is formed in a claw shape and can grip the adapter 5. The clamp 31 extends in the horizontal direction. The clamp storage section 32 is provided to the left of the adapter accommodation section 24 and is configured to move in the vertical direction by driving the lifting mechanism 33. The clamp storage section 32 is configured in a box shape capable of storing the clamp 31 therein. When the clamp storage section 32 moves in the vertical direction, the clamp 31 is stored in the clamp storage section 32. When the clamp storage section 32 stops at the side of one adapter accommodation section 24 and transfers the adapter 5 between the clamp storage section 32 and the adapter accommodation section 24, the clamp 31 moves from inside the clamp storage section 32 to the right. As a result, the clamp 31 enters the adapter accommodation section 24. The clamp storage section 32 is provided with a drive section (not shown) for the clamp 31. The lifting mechanism 33 includes a guide rail 33a extending in the vertical direction, a ball screw (not shown), and a motor (not shown) for rotating the ball screw. However, the configuration of the transport device 30 is not particularly limited.

[0017] The transport device 30 is configured to be able to move the clamp storage section 32 to below the multiple adapter storage sections 24. The transport device 30 is configured to transfer the adapter 5 to and from a holding device 51 positioned below the adapter storage sections 24. The holding device 51 is a device that holds the adapter 5 in the processing chamber 21, as will be described in detail later. The transport device 30 is also able to move the clamp storage section 32 to above the multiple adapter storage sections 24. The transport device 30 is configured to transfer the adapter 5 to and from an adapter holding device (not shown) of the cleaning chamber 23 provided above the adapter storage sections 24. The cleaning chamber 23 is provided in a space above the processing chamber 21 and to the right of the storage chamber 22.

[0018] 1, a storage chamber door 26 is provided on the front side of the storage chamber 22. A user opens the storage chamber door 26 when inserting or removing the adapter 5 into or from the storage chamber 22. The storage chamber door 26 is made of a transparent material such as a transparent acrylic plate, and is provided with a window portion 26a through which the inside of the storage chamber 22 can be seen.

[0019] As shown in FIG. 3, the machining chamber 21 is provided to the right of the accommodation chamber 22. FIG. 4 is a vertical cross-sectional view of the cutting machine 10 cut through the machining chamber 21. As shown in FIG. 4, the machining chamber 21 accommodates a cutting device 40 that cuts the workpiece 1 held by the adapter 5 (see FIG. 3). As shown in FIG. 4, the machining chamber 21 is partitioned by a machining chamber bottom wall 21D, a machining chamber top wall 21U, a machining chamber rear wall 21Rr, a machining chamber left wall 21L, and a machining chamber right wall 21R (see FIG. 3) of the housing 20. The front of the machining chamber 21 is open, forming an opening 21a. The housing 20 has an opening 21a of the machining chamber 21 on the front side. The machining chamber bottom wall 21D is inclined downward toward the back side of the cutting machine 10. The machining chamber rear wall 21Rr is connected to the rear end of the machining chamber bottom wall 21D so as to be perpendicular to the machining chamber bottom wall 21D. The machining chamber left wall 21L is connected to the left end of the machining chamber bottom wall 21D and the left end of the machining chamber rear wall 21Rr, and extends obliquely upward. The machining chamber right wall 21R is connected to the right end of the machining chamber bottom wall 21D and the right end of the machining chamber rear wall 21Rr, and extends obliquely upward. The opening 21a opens approximately parallel to the machining chamber rear wall 21Rr. Hereinafter, the oblique front-to-back direction approximately perpendicular to the machining chamber rear wall 21Rr is also referred to as the Y-axis direction. The oblique up-down direction approximately perpendicular to the machining chamber bottom wall 21D is also referred to as the Z-axis direction. The left-right direction is also referred to as the X-axis direction as appropriate.

[0020] An opening 21a of the processing chamber 21 is provided with a processing chamber door 25 that can open and close the opening 21a. The processing chamber door 25 is supported by the housing 20 so as to be rotatable about an axis at its right end. As shown in FIG. 1, the processing chamber door 25 is provided with a window portion 25a. The window portion 25a is formed of a transparent material. A user can view the inside of the processing chamber 21 through the window portion 25a.

[0021] As shown in FIG. 3 and FIG. 4, the machining chamber 21 is provided with the cutting device 40, the holding device 51 for the adapter 5, the rotating device 52 for the adapter 5, the X-axis moving device 53X, the Y-axis moving device 53Y, and the Z-axis moving device 53Z for relatively moving the adapter 5 and the cutting device 40 in the X-axis direction, the Y-axis direction, and the Z-axis direction, respectively, and the stocker 54 for the cutting tool T. These members are provided in front of the exhaust port 60 and the intake port 72 of the machining chamber 21 provided on the rear side of the housing 20 and behind the opening 21a of the machining chamber 21. The reason for the arrangement of the members in this manner will be described later. As shown in FIG. 4, the cutting device 40 includes a main shaft 41 extending substantially perpendicular to the machining chamber bottom wall 21D and a tool gripping portion 42 provided at the tip of the main shaft 41. The main shaft 41 is configured to rotate around its axis. When the spindle 41 is rotated with the cutting tool T held by the tool holding portion 42, the cutting tool T rotates around the axis of the spindle 41.

[0022] The holding device 51 holds the adapter 5 which holds the workpiece 1. The rotation device 52 is configured to be able to rotate the holding device 51 around a first rotation axis 52a extending in the X-axis direction and around a second rotation axis 52b perpendicular to the first rotation axis 52a. By the rotation device 52 rotating the holding device 51, the orientation of the workpiece 1 relative to the cutting device 40 can be changed.

[0023] The Z-axis moving device 53Z is configured to move the cutting device 40 in the Z-axis direction. The X-axis moving device 53X is configured to move the cutting device 40 in the X-axis direction via the Z-axis moving device 53Z. The Y-axis moving device 53Y is configured to move the workpiece 1 in the Y-axis direction by moving the rotation device 52 and the holding device 51 in the Y-axis direction. This makes it possible to move the workpiece 1 in the X-axis direction, Y-axis direction, and Z-axis direction relative to the cutting device 40.

[0024] The cutting machine 10 is provided with an exhaust port 60 that communicates the machining chamber 21 with the outside of the machining chamber 21 and is configured to be connectable to a dust collector 80A. As shown in FIG. 4, the exhaust port 60 opens to the rear surface of the housing 20 and the machining chamber 21. The exhaust port 60 is provided below the cutting device 40. Since the exhaust port 60 is provided below the cutting device 40, cutting powder that falls when the workpiece 1 is cut is discharged to the outside of the machining chamber 21 through the exhaust port 60. FIG. 5 is a rear view of the cutting machine 10. As shown in FIGS. 4 and 5, the exhaust port 60 is formed of a cylindrical exhaust pipe 61 to which a dust collector 81 can be connected. The dust collector 81 connects the exhaust port 60 to the dust collector 80A for the machining chamber 21.

[0025] As shown in Fig. 4, the cutting machine 10 according to this embodiment includes a duct unit 70 that is provided with an air intake 72 and is configured to be detachable from the housing 20. Fig. 6 is a perspective view of the duct unit 70. As shown in Figs. 4 to 6, the duct unit 70 includes an attachment panel 71, an air intake 72, a duct 73, a nozzle 74, a rotation shaft 75 for the nozzle 74, and a cleaning chamber exhaust pipe 76. As shown in Fig. 5, a unit attachment portion 27a into which the attachment panel 71 of the duct unit 70 is fitted is formed in the rear panel 27 of the housing 20.

[0026] As shown in FIG. 6, the mounting panel 71 is a flat member fitted into the rear panel 27 of the housing 20. A part of the machining chamber rear wall 21Rr is made of the mounting panel 71. The intake port 72 is provided so as to penetrate the mounting panel 71. The intake port 72 is a vent port for connecting the machining chamber 21 to the outside of the machining chamber 21 and taking in outside air into the machining chamber 21 from which air has been discharged by the dust collector 80A. As shown in FIG. 4, the intake port 72 opens on the rear surface of the housing 20. The intake port 72 is also provided above the cutting device 40. The intake port 72 is provided perpendicular to the inclined machining chamber rear wall 21Rr and is inclined downward toward the rear. As shown in FIG. 5, the intake port 72 includes a right intake port 72R and a left intake port 72L provided to the left of the right intake port 72R. The right intake port 72R and the left intake port 72L are aligned in the left-right direction. Each of the right intake port 72R and the left intake port 72L is formed of a plurality of slits aligned in the left-right direction.

[0027] As shown in FIG. 6, the duct 73 includes a right duct 73R connected to the right intake port 72R, a left duct 73L connected to the left intake port 72L, and a collecting duct 73F connected to the right duct 73R and the left duct 73L. The rear end 73a of the duct 73, which is composed of the rear end of the right duct 73R and the rear end of the left duct 73L, is connected to the intake port 72. The right duct 73R, the left duct 73L, and the collecting duct 73F are all configured in a cylindrical shape, and air flows inside. As shown in FIG. 4, the duct 73 is provided above the cutting device 40. The duct 73 is provided approximately horizontally and extends in the front-rear direction. As shown in FIG. 6, the right duct 73R has a tapered portion 73c that narrows in the vertical direction toward the front side. The portion in front of the tapered portion 73c of the right duct 73R is a straight flow path provided approximately horizontally. The right intake port 72R, which is inclined downward toward the rear, and the right duct 73R, which extends substantially horizontally, are smoothly connected by the tapered portion 73c. ​​The left duct 73L is configured symmetrically to the right duct 73R.

[0028] A collecting duct 73F is connected to the front end of the right duct 73R and the front end of the left duct 73L. The collecting duct 73F has a flat shape that is long in the left-right direction. The air flowing from the right intake port 72R into the right duct 73R and the air flowing from the left intake port 72L into the left duct 73L join together in the collecting duct 73F. As shown in FIG. 4, the front end 73b of the duct 73 (the front end of the collecting duct 73F) is located forward of the cutting device 40. The duct 73 is a flow path provided so that the air sucked in from the intake port 72 is blown out into the machining chamber 21 forward of the cutting device 40.

[0029] A cleaning chamber exhaust pipe 76 is provided in the space between the right duct 73R and the left duct 73L and behind the collecting duct 73F. Although not shown, one end of the cleaning chamber exhaust pipe 76 is connected to the cleaning chamber 23. The other end (rear end) of the cleaning chamber exhaust pipe 76 opens to the rear face of the mounting panel 71, as shown in Fig. 5. A dust collector 80B for the cleaning chamber 23 is connected to the rear end of the cleaning chamber exhaust pipe 76.

[0030] A nozzle 74 is connected to a front end 73b of the duct 73. The nozzle 74 is provided forward of the cutting device 40. The nozzle 74 is configured as a flat cylinder long in the left-right direction, and air flows inside. The end of the nozzle 74 on the opposite side to the duct 73 side is an air outlet 74c1 that opens so that air can be blown out. In this embodiment, the nozzle 74 is configured to be rotatable relative to the duct 73, with the end on the duct 73 side as an axis. As shown in FIG. 6, the duct unit 70 is provided in the duct 73 and includes a rotation shaft 75 that supports the nozzle 74 so as to be rotatable relative to the duct 73. The rotation shaft 75 extends in the left-right direction. The nozzle 74 is configured to be rotatable around the rotation shaft 75. A handle 74a that a user holds when rotating the nozzle 74 is provided on the front side of the nozzle 74. As shown in Fig. 4, when the nozzle 74 is rotated downward, the nozzle 74 extends along the processing chamber door 25. The nozzle 74 is usually positioned in this position. However, when the nozzle 74 is in this position, the user cannot access the cutting device 40, etc. The nozzle 74 is configured to be rotatable in the vertical direction so that the nozzle 74 can be moved from in front of the cutting device 40, etc., during maintenance or checking the status of the cutting device 40. Fig. 3 shows the nozzle 74 rotated upward from the state shown in Fig. 4.

[0031] The nozzle 74 has a base portion 74b that extends substantially parallel to the machining chamber door 25 when rotated downward, and a bent portion 74c that is bent from the base portion 74b so as to extend further toward the machining chamber rear wall 21Rr than the base portion 74b. An air outlet 74c1 is provided at the tip of the bent portion 74c. The nozzle 74 is configured so that the cross-sectional area gradually decreases toward the air outlet 74c1. This allows the speed of the wind blown out from the air outlet 74c1 to be increased.

[0032] 1, a control panel 90 is provided on the front panel 28 of the housing 20 to enable the user to operate the cutting machine 10 and check the status of the cutting machine 10. In this embodiment, the control panel 90 is disposed to the right of the machining chamber door 25. However, the position of the control panel 90 is not particularly limited as long as it is located on the front side of the cutting machine 10.

[0033] [Suppression of cutting noise leakage and airflow during dust collection] The following describes the leakage state of cutting sound when cutting the workpiece 1 by the cutting machine 10 according to this embodiment, and the air flow inside the processing chamber 21. As already described, in a cutting machine equipped with an intake port and an exhaust port, the cutting sound when cutting the workpiece leaks from the intake port. In this embodiment, in order to reduce the discomfort felt by the user due to the leaking cutting sound, the intake port 72 is provided on the rear side of the housing 20. The front side of the cutting machine 10 is the side on which the work doors such as the processing chamber door 25 and the storage chamber door 26 and the operation panel 90 are provided, and the rear side is the opposite side. In normal use of the cutting machine 10, the user is often in front of the cutting machine 10, so by providing the intake port 72 on the rear side of the cutting machine 10, the discomfort felt by the user due to the cutting sound leaking from the intake port 72 can be reduced. In addition, even if the size of the intake port 72 is increased to increase the dust collection capacity, the increase in the discomfort felt by the user due to this can be reduced. Since the back surface of the cutting machine 10 is often directed toward a wall at the installation location, it is easy to reduce cutting noise by applying a sound-absorbing treatment to the wall at the installation location.

[0034] On the other hand, in terms of collecting the cutting dust in the machining chamber 21, it is preferable that the air flow during the dust collection is set to form an air curtain between the opening 21a and the cutting device 40. Therefore, the cutting machine 10 according to this embodiment has a rear end 73a connected to the intake port 72 and a front end 73b located forward of the cutting device 40, and is provided with a duct 73 extending in the front-rear direction. The arrow W in FIG. 4 indicates the air flow when the dust collector 80A is driven. As shown in FIG. 4, the air flow W of the air sucked in from the intake port 72 passes forward of the cutting device 40, in other words, between the cutting device 40 and the opening 21a, by the duct 73. Therefore, the air flow W forms an air curtain between the opening 21a and the cutting device 40. This suppresses the scattering of cutting dust to the outside of the machining chamber 21 through the opening 21a.

[0035] In addition, the airflow W during dust collection is preferably set to face downward so as to sweep away the cutting powder rather than to stir it up. Therefore, in this embodiment, the duct 73 is provided above the cutting device 40, and the exhaust port 60 is provided below the cutting device 40. As a result, as shown in FIG. 4, a downward airflow W can be generated, and the airflow W passes by the side of the cutting device 40. By having the airflow W pass by the side of the cutting device 40, cutting powder attached to the cutting device 40, the adapter 5, and the workpiece 1 can also be collected.

[0036] In order to make the airflow W more effective, the cutting machine 10 according to this embodiment further includes a nozzle 74 connected to the front end 73b of the duct 73 and extending along the machining chamber door 25. The nozzle 74 can more reliably form an air curtain along the machining chamber door 25 and the opening 21a. In addition, in this embodiment, the nozzle 74 includes an outlet 74c1 that opens downward. Therefore, a downward airflow W can be generated. Furthermore, the nozzle 74 includes a bending portion 74c that bends toward the cutting device 40, and blows out the airflow W so as to be slightly toward the cutting device 40. This makes it possible to more reliably sweep away cutting powder adhering to the cutting device 40, the adapter 5, and the workpiece 1. As described above, the nozzle 74 can also be rotated upward when it becomes necessary to access the cutting device 40, for example.

[0037] In this embodiment, the exhaust port 60 is also provided on the rear side of the housing 20. Therefore, as shown in Fig. 4, the airflow W that passes through the duct 73 and the nozzle 74 draws a semicircular loop and is exhausted to the outside of the machining chamber 21. The airflow W passes below the cutting device 40. Therefore, cutting powder that has fallen below the cutting device 40 can be discharged to the outside of the machining chamber 21.

[0038] In this embodiment, the air intake 72 and the duct 73 are provided in a duct unit 70 that is detachable from the housing 20. This makes it possible to inspect and maintain the air intake 72 and the duct 73 with the duct unit 70 removed from the housing 20. This makes it easier to inspect and maintain the air intake 72 and the duct 73.

[0039] [Other embodiments] The cutting machine according to one embodiment has been described above. However, the technology disclosed herein can be implemented in other ways. For example, in the above embodiment, the cutting machine 10 is provided with the duct 73 for blowing the air sucked in from the air intake port 72 on the rear side forward of the cutting device 40, but the cutting machine does not need to be provided with such a duct. Similarly, the cutting machine does not need to be provided with a nozzle that extends along the machining chamber door. Alternatively, the nozzle may be fixed to the duct so as not to be rotatable.

[0040] In the above embodiment, the exhaust port 60 is provided on the rear side of the cutting machine 10 and below the cutting device 40, but the position of the exhaust port is not particularly limited. The vertical position of the intake port is also not limited. The dust collector connected to the exhaust port does not have to be a dust collector provided only for the cutting machine, and may be, for example, a dust collection facility provided at the installation location.

[0041] Unless otherwise specified, the embodiments do not limit the present invention. For example, the cutting machine does not have to be a dental cutting machine for producing dental molded products. The workpiece does not have to be held by the cutting machine via an adapter, and may be held directly by the cutting machine. [Explanation of symbols]

[0042] 1 Workpiece 10 Cutting machine 20. Cabinet 21 Processing room 21a opening 25 Processing room door (door) 40 Cutting equipment 60 Exhaust port 70 Duct unit 72 Air Intake 73 Duct 74 Nozzle 75 Rotating Axis 80A Dust Collector

Claims

1. A cutting device that cuts the workpiece; a housing defining a processing chamber in which the cutting device is housed and having an opening on a front side; an exhaust port that communicates the processing chamber with the outside of the processing chamber and is configured to be connectable to a dust collector; an intake port that communicates the processing chamber with the outside of the processing chamber; a door provided at the opening and capable of opening and closing the opening, The air intake is open to a rear surface of the housing, the cutting device is provided forward of the intake port and rearward of the opening, The cutting device further includes a duct extending in a front-rear direction and having a first end connected to the intake port and a second end located forward of the cutting device. Cutting machine.

2. a nozzle connected to the second end of the duct and extending along the door; The cutting machine according to claim 1.

3. The nozzle further includes a rotation shaft provided in the duct and supporting the nozzle so as to be rotatable relative to the duct. The cutting machine according to claim 2.

4. a duct unit provided with at least the intake port and the duct and detachable from the housing; The cutting machine according to any one of claims 1 to 3.

5. The duct is provided above the cutting device, The exhaust port is provided below the cutting device. The cutting machine according to any one of claims 1 to 4.

6. The exhaust port is open to the rear surface of the housing. The cutting machine according to any one of claims 1 to 5.

7. The air intake is provided above the cutting device, The exhaust port is provided below the cutting device. The cutting machine according to any one of claims 1 to 6.

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