Cutting machine

Abstract

To provide a cutting machine in which dust from outside a housing is less likely to adhere to a machining mechanism moving device or a holding device moving device provided inside the housing.SOLUTION: A cutting machine 100 includes: a housing 10; a first partition member 80 that divides the inside of the housing 10 into a dust storage area and a first accommodating area A1 or a second accommodating area A2 with air being able to circulate therebetween; an intake port 78 that communicates the outside of the housing 10 with the dust storage area; and an exhaust port 70 that communicates a machining area A0 with the outside of the housing 10. The cutting machine 100 is configured such that, when air in the machining area A0 is suctioned and discharged through the exhaust port 70, air flows from the outside of the housing 10 into the dust storage area through the intake port 78, and circulates in order through the dust storage area, the first accommodating area A1 or the second accommodating area A2, and the machining area A0.SELECTED DRAWING: Figure 3

Description

Technical Field

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

Background Art

[0002] A cutting machine for producing, for example, dental molded products by cutting a workpiece has been conventionally known. For example, Patent Document 1 discloses a cutting machine including a housing whose interior is partitioned into a plurality of areas including a machining area and a plurality of storage areas. The machining area is an area for performing cutting on a workpiece. A clamp for holding the workpiece is accommodated in the machining area. In the first storage area, a machining mechanism for cutting the workpiece and a machining mechanism moving device for moving the machining mechanism are accommodated. In a second storage area, which is a storage area different from the first storage area, a clamp moving device for moving the clamp is arranged. The machining area and the first storage area are partitioned by a wall portion, and an opening is formed in the wall portion. When cutting the workpiece, the machining mechanism is moved from the first storage area to the machining area through the opening.

[0003] When cutting a workpiece, cutting powder is generated. Therefore, the cutting machine disclosed in Patent Document 1 includes an intake port provided on the upper surface of the housing and an exhaust duct that communicates the machining area inside the housing with the outside of the housing. A dust collector is provided outside the housing, and the dust collector is connected to the exhaust duct. Thereby, an air flow is formed that reaches the dust collector from the outside of the housing via the intake port, the machining area, and the exhaust duct. By this air flow, the cutting powder is carried to the dust collector, and the cutting powder can be discharged from the inside of the housing.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in an environment where there is a lot of dust outside the housing, when air flows into the housing from the air intake, dust is likely to enter the housing at the same time. If this dust adheres to the processing mechanism moving device or the clamp moving device having a drive unit, there may be problems in the operation of the processing mechanism moving device or the clamp moving device.

[0006] The present invention has been made in view of such a point, and an object thereof is to provide a cutting machine in which dust outside the housing hardly adheres to a processing mechanism moving device or a clamp moving device provided inside the housing.

Means for Solving the Problems

[0007] The cutting machine according to the present invention includes a housing, a first partition member that partitions the inside of the housing into a dust storage area and an accommodation area that can communicate with each other for air flow, a second partition member that partitions the inside of the housing into the accommodation area and a processing area that can communicate with each other for air flow, an air intake formed in the housing that communicates the outside of the housing with the dust storage area, an exhaust port formed in the housing that communicates the processing area with the outside of the housing, a holding device disposed in the processing area for gripping a workpiece, a processing mechanism disposed in the processing area for cutting the workpiece gripped by the holding device, a holding device moving device disposed in the accommodation area for moving the holding device, and a processing mechanism moving device disposed in the accommodation area for moving the processing mechanism. When the air in the processing area is sucked and discharged from the exhaust port, the cutting machine is configured such that air flows into the dust storage area from the outside of the housing through the air intake, and the air flows in the order of the dust storage area, the accommodation area, and the processing area.

[0008] According to the above configuration, the air flowing in from the intake port passes through the dust storage area before reaching the storage area where the processing mechanism moving device and the holding device moving device are accommodated. Dust that has entered the housing from the outside together with the air flowing in from the intake port is stored in the dust storage area. As a result, it is difficult for the dust that has entered from the outside of the housing to reach the storage area. It is difficult for dust that has entered from the outside of the housing to adhere to the processing mechanism moving device and the holding device moving device.

Effect of the Invention

[0009] According to the present invention, it is possible to provide a cutting machine in which dust outside the housing hardly adheres to a processing mechanism moving device or a holding device moving device provided inside the housing.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0011] Hereinafter, a cutting machine according to an embodiment will be described with reference to the drawings. Note that the embodiment described here is not intended to limit the present invention. Also, members and parts having the same function are denoted by the same reference numerals, and redundant descriptions are omitted or simplified as appropriate.

[0012] FIG. 1 is a perspective view showing a cutting machine 100 of the present embodiment. FIG. 2 is a view showing the cutting machine 100 when the door 17 is opened. In the drawings, the symbols F, Rr, L, R, U, and D respectively mean the front, rear, left, right, top, and bottom of the cutting machine 100. The symbols X, Y, and Z in the drawings respectively mean the front-rear direction, left-right direction, and up-down direction. However, these directions are defined for convenience of explanation and do not limit the installation mode of the cutting machine 100, nor do they limit the present invention.

[0013] In the present embodiment, the cutting machine 100 produces an object by cutting a workpiece 5 (see FIG. 6). Here, the type of the object is not particularly limited, and for example, it is a dental crown prosthesis. Examples of dental crown prostheses include inlays, crowns, bridges, and the like. In the present embodiment, the cutting machine 100 is used in the dental field and produces a dental crown prosthesis from the workpiece 5. However, the field in which the cutting machine 100 is used is not limited to the dental field.

[0014] The workpiece 5 is, for example, disk-shaped. The workpiece 5 is formed depending on the type of material such as zirconia, polymethyl methacrylate resin (PMMA), hybrid resin, PEEK (polyetheretherketone resin), and gypsum. When zirconia is used as the type of material of the workpiece 5, for example, semi-sintered zirconia is used. However, the shape and material of the workpiece 5 are not particularly limited.

[0015] As shown in FIGS. 1 and 2, the machining machine 100 includes a housing 10. The housing 10 is formed in a box shape. An internal space is formed inside the housing 10. The housing 10 includes a bottom plate 11, a front plate 12, a left side plate 13, a right side plate 14, a rear plate 15, and a top plate 16. The bottom plate 11 constitutes the bottom surface of the housing 10. The front plate 12 extends in the vertical direction Z from the front end portion of the bottom plate 11. Specifically, the bottom plate 11 is provided so as to incline rearward upward. The left side plate 13 extends in the vertical direction Z from the left end portion of the bottom plate 11. The left side plate 13 constitutes the left side surface of the housing 10. The front end portion of the left side plate 13 is connected to the left end portion of the front plate 12. The right side plate 14 extends in the vertical direction Z from the right end portion of the bottom plate 11. The right side plate 14 constitutes the right side surface of the housing 10. The front end portion of the right side plate 14 is connected to the right end portion of the front plate 12. The rear plate 15 extends in the vertical direction Z from the rear end portion of the bottom plate 11. The rear plate 15 constitutes the back surface of the housing 10. The left end portion of the rear plate 15 is connected to the rear end portion of the left side plate 13, and the right end portion of the rear plate 15 is connected to the rear end portion of the right side plate 14. The top plate 16 constitutes the upper surface of the housing 10. The top plate 16 is connected to the upper end portion of the front plate 12, the upper end portion of the left side plate 13, the upper end portion of the right side plate 14, and the upper end portion of the rear plate 15. The top plate 16 extends in the front-rear direction X and the left-right direction Y. The bottom plate 11, the front plate 12, the left side plate 13, the right side plate 14, the rear plate 15, and the top plate 16 are formed of, for example, a steel plate or the like.

[0016] As shown in FIG. 2, two front openings 12a are formed in the front plate 12. A door 17 is provided in front of the housing 10. The door 17 is slidably provided on slide rails (not shown) provided at the front end portions of the left side plate 13 and the right side plate 14. The slide rails extend in the vertical direction Z along the front surface of the housing 10. By moving the door 17 along the slide rails, the door 17 can open and close the front opening 12a. Two window portions 19 are provided in the door 17. The window portions 19 are provided in the door 17 so that when the door 17 is closed, the window portions 19 and the front openings 12a are substantially in the same position in the vertical direction Z and the left-right direction Y. Thereby, when the door 17 is closed, the user can visually recognize the inside of the housing 10 through the window portions 19.

[0017] A drawer 9 is provided at the lower right portion of the front surface of the machining machine 100. The drawer 9 is provided below the door 17. The drawer 9 is a space where the user can freely store work tools and the like used by the user. The drawer 9 is slidably provided on a slide rail (not shown) disposed in a second storage area A2 inside the housing 10 described later. The drawer 9 can move in the front-rear direction X between the outside of the housing 10 and the second storage area A2 described later.

[0018] FIG. 3 is a view when the B-B cross section in FIG. 1 is viewed from the left. FIG. 4 is a view when the C-C cross section in FIG. 1 is viewed from the right. FIG. 5 is a view when the D-D cross section in FIG. 1 is viewed from the front. The internal space of the housing 10 is partitioned into a plurality of areas such as a machining area A0, a first storage area A1, a second storage area A2, a machining tool exchange area A3, and a control area A4.

[0019] The machining area A0 is disposed at the lower left portion of the internal space of the housing 10. The machining area A0 occupies most of the front-rear direction X. The length in the vertical direction Z of the machining area A0 is about half of the length in the vertical direction Z of the internal space of the housing 10. Machining of the workpiece 5 is performed in the machining area A0.

[0020] The first storage area A1 is disposed above the machining area A0. The first storage area A1 is disposed at the center of the internal space of the housing 10 in the front-rear direction X and at the upper side of the internal space of the housing 10 in the vertical direction Z. The length in the left-right direction Y of the first storage area A1 is substantially equal to the length in the left-right direction Y of the internal space of the housing 10. The length in the vertical direction Z of the first storage area A1 is about half of the length in the vertical direction Z of the internal space of the housing 10.

[0021] The second storage area A2 is arranged to the right of the processing area A0 and below the first storage area A1. The second storage area A2 is arranged in the lower right part of the internal space of the housing 10. The second storage area A2 occupies most of the front-rear direction X. The length of the second storage area A2 in the vertical direction Z is about half of the length of the internal space of the housing 10 in the vertical direction Z.

[0022] The processing tool exchange area A3 is arranged in front of the first storage area A1 and above the second storage area A2. The processing tool exchange area A3 occupies the front side of the upper right part of the internal space of the housing 10. The length of the processing tool exchange area A3 in the vertical direction Z is about half of the length of the internal space of the housing 10 in the vertical direction Z.

[0023] The control area A4 is arranged behind the processing area A0 and behind the first storage area A1. The control area A4 occupies the rear part of the internal space of the housing 10. The length of the control area A4 in the left-right direction Y is equal to the length of the internal space of the housing 10 in the left-right direction Y. The length of the control area A4 in the vertical direction Z is equal to the length of the internal space of the housing 10 in the vertical direction Z. A control device (not shown) is provided in the control area A4. The control device is a device that controls the operation of the cutting machine 100. The configuration of the control device is not particularly limited.

[0024] As shown in FIG. 3, the processing area A0 and the first storage area A1 are partitioned by the first wall portion 61. The first wall portion 61 is arranged at the central part of the internal space of the housing 10 in the vertical direction Z. The first wall portion 61 is a plate-like member extending in the front-rear direction X and the left-right direction Y. The first wall portion 61 is inclined downward toward the rear. The first wall portion 61 is connected to the front plate 12, the left side plate 13, and the right side plate 14. In the present embodiment, the first wall portion 61 is formed of a steel plate. A first opening 61a is formed in the first wall portion 61. The first opening 61a communicates the processing area A0 and the first storage area A1.

[0025] The processing area A0 and the second accommodation area A2 are partitioned by a second wall portion 62. The second wall portion 62 is disposed at the center of the internal space of the housing 10 in the left - right direction Y. The second wall portion 62 is a plate - shaped member extending in the front - rear direction X and the up - down direction Z. The lower end portion of the second wall portion 62 is connected to the bottom plate 11. The upper end portion of the second wall portion 62 is connected to the first wall portion 61. In the present embodiment, the second wall portion 62 is formed of a steel plate. A second opening 62a is formed in the second wall portion 62. The second opening 62a communicates the processing area A0 and the second accommodation area A2.

[0026] The first accommodation area A1 and the second accommodation area A2 are partitioned by a third wall portion 63. The third wall portion 63 is disposed at the center of the internal space of the housing 10 in the up - down direction Z. The third wall portion 63 is a plate - shaped member extending in the front - rear direction X and the left - right direction Y. In the present embodiment, the first wall portion 61 and the third wall portion 63 are integrally formed of a single steel plate.

[0027] The processing area A0 and the control area A4 are partitioned by a fourth wall portion 64. Also, the first accommodation area A1 and the control area A4 are partitioned by the fourth wall portion 64. The fourth wall portion 64 is a plate - shaped member extending in the left - right direction Y and the up - down direction Z. The lower end portion of the fourth wall portion 64 is connected to the bottom plate 11. The upper end portion of the fourth wall portion 64 is connected to the top plate 16. The left end portion of the fourth wall portion 64 is connected to the left side plate 13. The right end portion of the fourth wall portion 64 is connected to the right side plate 14. The rear end portion of the first wall portion 61 is connected to the fourth wall portion 64. The rear end portion of the second wall portion 62 is connected to the fourth wall portion 64.

[0028] The machining machine 100 according to this embodiment includes a machining mechanism 20 for machining a workpiece 5. The machining mechanism 20 is disposed in a first accommodation area A1 inside the housing 10. However, a part of the machining mechanism 20 moves to the machining area A0 during machining. The machining mechanism 20 machines the workpiece 5 by bringing the machining tool 8 into contact with the workpiece 5 while rotating the machining tool 8. As shown in FIG. 3, the machining mechanism 20 includes a spindle 21, a tool gripping portion 22 that grips the machining tool 8, and a spindle rotating device 23 that rotates the spindle 21.

[0029] The spindle 21 rotates the tool gripping portion 22 and the machining tool 8 gripped by the tool gripping portion 22 about the longitudinal axis. The spindle 21 extends, for example, in the vertical direction Z. The spindle rotating device 23 is connected to the spindle 21. When the spindle rotating device 23 is driven, the spindle 21 rotates about the central axis extending in the vertical direction Z. The configuration of the spindle rotating device 23 is not particularly limited, and may be, for example, an electric motor.

[0030] The tool gripping portion 22 grips the machining tool 8 and is provided on the spindle 21. Specifically, the tool gripping portion 22 is provided on the bottom surface of the spindle 21. In this embodiment, the machining tool 8 has a cutting edge portion at the tip. Although not particularly shown, a plurality of machining tools 8 having different cutting edge portion shapes are prepared in advance in the tool exchange area A3 of the machining machine 100. The tool gripping portion 22 selectively grips one of the plurality of machining tools 8. As the spindle 21 rotates about the central axis extending in the vertical direction Z, the tool gripping portion 22 and the machining tool 8 gripped by the tool gripping portion 22 rotate about the central axis of the machining tool 8.

[0031] The processing mechanism 20 has a processing mechanism moving device 24 that can move the spindle 21 in the left - right direction Y and the up - down direction Z. The processing mechanism moving device 24 is composed of a left - right moving device 24Y and an up - down moving device 24Z. When performing cutting on the workpiece 5, the processing mechanism moving device 24 moves the processing tool 8 from the first storage area A1 to the processing area A0. At this time, the processing tool 8 passes through the first opening 61a and moves from the first storage area A1 to the processing area A0.

[0032] The processing mechanism moving device 24 is connected to the spindle 21 via other members. When the left - right moving device 24Y is driven, the spindle 21 moves in the left - right direction Y. When the up - down moving device 24Z is driven, the spindle 21 moves in the up - down direction Z. The configuration of the processing mechanism moving device 24 is not particularly limited. For example, the left - right moving device 24Y may be composed of a guide rail extending in the left - right direction Y, a left - right moving body slidably engaged with the guide rail, a ball screw connected to the left - right moving body, and an electric motor for rotating the ball screw. Similarly, the up - down moving device 24Z may also be a mechanism having a ball screw.

[0033] As shown in FIG. 3, an air - blowing device 28 is provided in the processing mechanism 20. The air - blowing device 28 is provided on the side of the spindle 21. The air - blowing device 28 injects air in the up - down direction Z from the lower end of the air - blowing device 28. The supply source of the air injected by the air - blowing device 28 is not particularly limited. For example, it may be a compressor installed outside the cutting machine 100. By the air - blowing device 28 injecting air during the cutting of the workpiece 5, the cutting powder generated when cutting the workpiece 5 can be blown away. Also, cutting heat is generated during the cutting of the workpiece 5, but the workpiece 5 and the processing tool 8 are cooled by the air injected by the air - blowing device 28. The air - blowing device 28 injects air while the workpiece 5 is being cut.

[0034] The cutting machine 100 according to this embodiment includes a clamp 30. The clamp 30 is an example of a holding device that holds the workpiece 5 during cutting. FIG. 6 is a plan view of the clamp 30. The clamp 30 is disposed in the machining area A0 (see FIG. 3). The workpiece 5 is mounted on an adapter 6, and the clamp 30 grips the adapter 6 mounted on the workpiece 5. Thereby, the workpiece 5 is gripped. A circular fitting hole 6a is formed in the adapter 6. The workpiece 5 is mounted on the adapter 6 by being fitted into the fitting hole 6a. Note that the shape and configuration of the clamp 30 are not particularly limited. In this embodiment, the clamp 30 has a shape corresponding to a part of the shape of the workpiece 5, that is, a part of the shape of the adapter 6. Here, the clamp 30 is C-shaped. The clamp 30 has a first clamping portion 31, a second clamping portion 32, and a connecting portion 33. The first clamping portion 31 and the second clamping portion 32 extend in the front-rear direction X and face each other in the left-right direction Y. The workpiece 5 is disposed between the first clamping portion 31 and the second clamping portion 32, and is gripped by being clamped by the first clamping portion 31 and the second clamping portion 32.

[0035] The connecting portion 33 connects the first clamping portion 31 and the second clamping portion 32 and is bridged between the first clamping portion 31 and the second clamping portion 32. Here, the connecting portion 33 is connected to the rear end of the first clamping portion 31 and the rear end of the second clamping portion 32.

[0036] In this embodiment, the clamp 30 is supported by a support member 40. Here, the support member 40 has a first portion 41 extending in the left-right direction Y and a second portion 42 extending forward from the right end of the first portion 41. The support member 40 is formed in an L shape by the first portion 41 and the second portion 42.

[0037] The first part 41 is disposed behind the connecting part 33 and is connected to the connecting part 33 via a first rotation shaft 44 extending in the front-rear direction X. The clamp 30 is configured to be rotatable about the first rotation shaft 44. A first shaft rotation device (not shown) is connected to the first rotation shaft 44. The first shaft rotation device is a driving device that rotates the clamp 30 about the first rotation shaft 44. The configuration of the first shaft rotation device is not particularly limited, and for example, it may be an electric motor or the like.

[0038] The second part 42 is disposed to the right of the second clamping part 32. A second rotation shaft 45 is connected to the second part 42. The second rotation shaft 45 extends in the left-right direction Y across the processing area A0 and the second accommodation area A2. The second rotation shaft 45 passes through the second opening 62a of the second wall part 62. The support member 40 is configured to be rotatable about the second rotation shaft 45. Here, when the support member 40 rotates, the clamp 30 rotates about the second rotation shaft 45 in the same manner as the support member 40. A second shaft rotation device (not shown) is connected to the second rotation shaft 45. The second shaft rotation device is a driving device that rotates the clamp 30 about the second rotation shaft 45. The configuration of the second shaft rotation device is not particularly limited, and for example, it may be an electric motor or the like.

[0039] The clamp moving device 50 is a device that moves the clamp 30 in the front-rear direction X by moving the support member 40 in the front-rear direction X. The support member 40 is connected to the clamp moving device 50 by the second rotation shaft 45. The clamp moving device 50 is disposed in the second accommodation area A2. In the present embodiment, the clamp moving device 50 moves the support member 40 obliquely in the front-rear direction so as to descend rearward. That is, when the support member 40 is moved rearward by the clamp moving device 50, it also moves downward. When the support member 40 is moved forward by the clamp moving device 50, it also moves upward. The configuration of the clamp moving device 50 is not particularly limited. For example, the clamp moving device 50 may be a mechanism having a ball screw, similar to the processing mechanism moving device 24.

[0040] As shown in Fig. 3, an exhaust port 70 is formed at the rear lower end of the machining area A0. The exhaust port 70 is arranged behind the clamp 30. The shape of the exhaust port 70 is not particularly limited, but in this embodiment, it is formed in a substantially rectangular shape where the length in the left-right direction Y is longer than the length in the front-rear direction X. An exhaust duct 74 is connected to the exhaust port 70. The exhaust duct 74 extends in the front-rear direction X from the exhaust port 70 to the outside of the housing 10. A dust collector 76 installed outside the housing 10 is connected to the end of the exhaust duct 74 on the outside of the housing 10. The dust collector 76 can suck the air inside the machining area A0 through the exhaust port 70 and the exhaust duct 74. The dust collector 76 can discharge the cutting powder generated during cutting from the machining area A0. The configuration of the dust collector 76 is not particularly limited, and for example, it may have a configuration with a fan. The dust collector 76 operates while the workpiece 5 is being cut.

[0041] As shown in Figs. 1 and 2, an air intake port 78 is formed in the housing 10. In this embodiment, the air intake port 78 is composed of a plurality of slits. However, the shape of the air intake port 78 is not particularly limited. The air intake port 78 is an opening for taking in the air outside the housing 10 into the housing 10 as the air is discharged from the exhaust port 70.

[0042] In this embodiment, four air intake ports 78 are formed. One air intake port 78 is formed on each of the top plate 16 that constitutes the upper surface of the housing 10 and the left side plate 13 that constitutes the left side surface of the housing 10, and two air intake ports 78 are formed on the right side plate 14 that constitutes the right side surface of the housing 10. In the following description, the air intake port 78 provided on the upper surface of the housing 10 is referred to as the upper air intake port 78a. The air intake port 78 provided on the left side surface of the housing 10 is referred to as the left air intake port 78b. Among the air intake ports 78 provided on the right side surface of the housing 10, the upper air intake port 78 is referred to as the upper right air intake port 78c. Among the air intake ports 78 provided on the right side surface of the housing 10, the lower air intake port 78 is referred to as the lower right air intake port 78d. The left air intake port 78b and the upper right air intake port 78c are formed at the same position in the front-rear direction X and the vertical direction Z. The upper right air intake port 78c is formed in front of the lower right air intake port 78d.

[0043] When taking in the air outside the housing 10 from the air inlet 78 into the housing 10, dust outside the housing 10 may flow into the housing 10 at the same time. If this dust adheres to the processing mechanism moving device 24, the clamp moving device 50, etc., there may be problems with these operations. Therefore, as represented by reference numerals S1 to S4 in FIG. 5, the cutting machine 100 according to the present embodiment includes a dust storage area inside the housing 10. The air inlet 78 communicates the dust storage area with the outside of the housing 10. That is, the air flowing into the housing 10 from the air inlet 78 first flows into the dust storage area. Here, the dust storage area communicated with the outside of the housing 10 by the upper air inlet 78a is called the upper dust storage area S1. The dust storage area communicated with the outside of the housing 10 by the left air inlet 78b is called the left dust storage area S2. The dust storage area communicated with the outside of the housing 10 by the upper right air inlet 78c is called the upper right dust storage area S3. The dust storage area communicated with the outside of the housing 10 by the lower right air inlet 78d is called the lower right dust storage area S4.

[0044] The dust storage areas S1 to S4 are partitioned by the first accommodation area A1 or the second accommodation area A2 and the first partition member 80. The upper partition plate 80a, the upper right partition plate 80c, and the lower right partition plate 80d, which will be described later, are examples of the first partition member 80. At least one of the first air circulation part 81 that allows air to flow between the three dust storage areas S1, S3, and S4 other than the left dust storage area S2 and the first accommodation area A1 and the second air circulation part 82 that allows air to flow between the second accommodation area A2 is provided. For example, the first air circulation part 81 and the second air circulation part 82 are realized by providing a gap between the first partition member 80 and the housing 10 or forming a ventilation hole in the first partition member 80.

[0045] As shown in FIG. 5, the upper dust storage area S1 is disposed above the processing area A0. As shown in FIG. 3, the upper dust storage area S1 is disposed in front of the first accommodation area A1. The upper dust storage area S1 and the first accommodation area A1 are partitioned by an upper partition plate 80a. The upper partition plate 80a is provided behind the upper air inlet 78a and in front of the processing mechanism moving device 24. The upper partition plate 80a extends in the vertical direction Z from the upper surface of the first wall portion 61. The left end portion of the upper partition plate 80a is connected to the left side plate 13. The right end portion of the upper partition plate 80a is connected to the right side plate 14. A vent 81a is formed in the upper partition plate 80a. The vent 81a is an example of the first air circulation portion 81. The upper dust storage area S1 and the first accommodation area A1 communicate with each other through the vent 81a.

[0046] As shown in FIG. 5, the left dust storage area S2 is disposed above the processing area A0. The left dust storage area S2 is disposed to the left of the upper dust storage area S1. As shown in FIG. 7, the left dust storage area S2 is disposed in front of the first accommodation area A1. The left dust storage area S2 and the first accommodation area A1 are partitioned by the upper partition plate 80a. As shown in FIG. 5, the left dust storage area S2 and the upper dust storage area S1 are partitioned by a left partition plate 80b. The left partition plate 80b is provided so as to face the left air inlet 78b. The upper end portion of the left partition plate 80b is connected to the top plate 16. The rear end portion of the left partition plate 80b is connected to the upper partition plate 80a. The front end portion of the left partition plate 80b is connected to the front plate 12. Two vents 83b are provided in the left partition plate 80b (see FIG. 7). As shown in FIG. 5, the vents 83b are disposed below the left air inlet 78b. The left dust storage area S2 and the upper dust storage area S1 communicate with each other through the vents 83b.

[0047] As shown in FIG. 5, the upper right dust storage area S3 is disposed above the second accommodation area A2. The upper right dust storage area S3 and the second accommodation area A2 are partitioned by an upper right partition plate 80c. As shown in FIG. 8, the upper right dust storage area S3 is disposed in front of the first accommodation area A1. The upper right dust storage area S3 and the first accommodation area A1 are partitioned by an upper partition plate 80a. As shown in FIG. 5, the upper right partition plate 80c is disposed below the upper right air inlet 78c. The upper right partition plate 80c is connected to the right side plate 14. As shown in FIG. 8, a gap 82c is provided between the upper right partition plate 80c and the front plate 12. The gap 82c is an example of the second air flow portion 82. Through the gap 82c, the upper right dust storage area S3 and the second accommodation area A2 are communicated with each other.

[0048] As shown in FIG. 9, the lower right dust storage area S4 is disposed below the first accommodation area A1. The lower right dust storage area S4 is disposed to the right of the second accommodation area A2. A gap 81d is provided between the third wall portion 63 and the right side plate 14. The gap 81d is an example of the first air flow portion 81. Through the gap 81d, the lower right dust storage area S4 and the first accommodation area A1 are communicated with each other. The lower right dust storage area S4 and the second accommodation area A2 are partitioned by a lower right partition plate 80d. The lower right partition plate 80d is provided so as to face the lower right air inlet 78d and is disposed between the lower right air inlet 78d and the clamp moving device 50. The upper end portion of the lower right partition plate 80d is connected to the third wall portion 63. As shown in FIG. 8, the rear end portion of the lower right partition plate 80d is connected to the fourth wall portion 64. The front side of the lower right dust storage area S4 is an open portion 82d. The open portion 82d is an example of the second air flow portion 82. Through the open portion 82d, the front side of the lower right dust storage area S4 and the second accommodation area A2 are communicated with each other.

[0049] In this embodiment, the opening area of the lower right intake port 78d (hereinafter also simply referred to as the area) is larger than the area of the upper intake port 78a. The area of the upper intake port 78a is larger than the area of the left intake port 78b. The area of the left intake port 78b is equal to the area of the upper right intake port 78c. The area of the upper intake port 78a is larger than the area of the first opening 61a. The area of the left intake port 78b is larger than the area of the first opening 61a. The area of the upper right intake port 78c is larger than the area of the second opening 62a. The area of the lower right intake port 78d is larger than the areas of the first opening 61a and the second opening 62a. As a result, the flow velocity of the air flowing through the relatively small-area first opening 61a or second opening 62a becomes relatively fast, and the flow velocity of the air flowing through the relatively large-area intake port 78 becomes relatively slow. In this embodiment, each intake port 78 is provided so that the flow velocity of the air flowing through the intake port 78 is 1.0 m / s or less.

[0050] In the following description, the flow of the air flowing into the inside of the housing 10 from the intake port 78 will be described. The reference numeral F1 shown in FIGS. 3 and 5 represents the flow of the air flowing in from the upper intake port 78a. The reference numeral F2 shown in FIGS. 5 and 7 represents the flow of the air flowing in from the left intake port 78b. The reference numeral F3 shown in FIGS. 5 and 8 represents the flow of the air flowing in from the upper right intake port 78c. The reference numeral F4 shown in FIGS. 5, 8, and 9 represents the flow of the air flowing in from the lower right intake port 78d.

[0051] As shown in FIG. 3, the air flowing in from the upper intake port 78a first reaches the upper dust storage area S1. The air that has reached the upper dust storage area S1 flows from the vent 81a of the upper partition plate 80a to the first accommodation area A1. The first opening 61a of the first wall portion 61 communicates the processing area A0 and the first accommodation area A1. Therefore, when cutting is being performed, the air that has reached the first accommodation area A1 flows to the processing area A0. The air that has flowed to the processing area A0 reaches the exhaust port 70. At this time, the air that has reached the exhaust port 70 carries the cutting powder to the exhaust port 70. The air and the cutting powder that have reached the exhaust port 70 are sucked into the dust collector 76 through the exhaust duct 74.

[0052] As shown in FIG. 5, the air flowing in from the left intake port 78b first reaches the left dust storage area S2. Next, the air that has reached the left dust storage area S2 passes through the vent hole 83b formed in the left partition plate 80b and reaches the upper dust storage area S1. In the upper dust storage area S1, the air flowing in from the left intake port 78b merges with the air flowing in from the upper intake port 78a. After merging, the air flowing in from the left intake port 78b flows along the same path as the air flowing in from the above-mentioned upper intake port 78a and reaches the dust collector 76.

[0053] As shown in FIG. 5, the air flowing in from the upper right intake port 78c first reaches the upper right dust storage area S3. Next, as shown in FIG. 8, the air that has reached the upper right dust storage area S3 flows from the gap 82c between the upper right partition plate 80c and the front plate 12 to the second accommodation area A2. As shown in FIG. 5, the air that has flowed into the second accommodation area A2 passes through the second opening 62a of the second wall portion 62 and flows into the processing area A0. In the processing area A0, the air flowing in from the upper right intake port 78c is mixed with the air flowing in from the upper intake port 78a and the like. After mixing, as described above, the air flowing in from the upper right intake port 78c is sucked into the dust collector 76 through the exhaust port 70 and the exhaust duct 74.

[0054] As shown in FIG. 5, the air flowing in from the lower right air inlet 78d first reaches the lower right dust storage area S4. As shown in FIG. 8, the air that has reached the lower right dust storage area S4 is diverted into the second accommodation area A2 from the open portion 82d on the front side of the lower right dust storage area S4 and into the first accommodation area A1 from the gap 81d between the third wall portion 63 and the right side plate 14. As shown in FIG. 5, the air flowing into the second accommodation area A2 is mixed with the air flowing in from the upper right air inlet 78c in the second accommodation area A2. After mixing, as described above, it reaches the processing area A0 through the second opening 62a of the second wall portion 62. On the other hand, as shown in FIG. 9, the air flowing into the first accommodation area A1 is mixed with the air flowing in from the upper air inlet 78a and the left air inlet 78b that have also reached the first accommodation area A1 in the first accommodation area A1. After mixing, as described above, it reaches the processing area A0 through the first opening 61a of the first wall portion 61. In the processing area A0, the air flowing from the second accommodation area A2 and the air flowing from the first accommodation area A1 are mixed together with the air flowing in from the other air inlets 78. After mixing, as described above, it is sucked into the dust collector 76 through the exhaust port 70 and the exhaust duct 74.

[0055] According to the present embodiment, when the cutting machine 100 sucks and discharges the air in the processing area A0 from the exhaust port 70, air flows into the dust storage area from the outside of the housing 10 through the air inlet 78, and is configured such that the air circulates in the order of the dust storage areas S1 to S4, the first accommodation area A1 or the second accommodation area A2, and the processing area A0. Since the dust storage areas S1 to S4 for storing the dust contained in the air flowing in from the outside are provided, it is difficult for the dust flowing in from the outside of the housing 10 to adhere to the processing mechanism moving device 24 and the clamp moving device 50.

[0056] According to the present embodiment, the lower right partition plate 80d is provided so as to face the lower right air inlet 78d. The air that has flowed into the inside of the housing 10 from the outside of the housing 10 through the lower right air inlet 78d collides with the lower right partition plate 80d. As a result, the dust that has flowed in together with the air from the outside of the housing 10 adheres to the lower right partition plate 80d. Therefore, it is difficult for dust to adhere to the processing mechanism moving device 24 and the clamp moving device 50. Further, the left partition plate 80b is provided so as to face the left air inlet 78b. As a result, the dust that has flowed into the inside of the housing 10 from the left air inlet 78 adheres to the left partition plate 80b. Therefore, it is difficult for dust to adhere to the processing mechanism moving device 24.

[0057] According to the present embodiment, the lower right partition plate 80d is disposed between the lower right air inlet 78d and the clamp moving device 50. Thereby, it is possible to suppress the dust that has flowed in together with the air from the outside of the housing 10 from adhering to the clamp moving device 50. Further, the upper partition plate 80a is disposed between the upper air inlet 78a and the processing mechanism moving device 24. Thereby, it is possible to suppress the dust from adhering to the processing mechanism moving device 24. Similarly, the upper right partition plate 80c is disposed between the upper right air inlet 78c and the clamp moving device 50. Thereby, it is possible to suppress the dust from adhering to the clamp moving device 50.

[0058] According to the present embodiment, a first opening 61a is formed in the first wall portion 61. The area of the upper air inlet 78a is larger than the area of the first opening 61a. As a result, the flow velocity of the air flowing from the outside of the housing 10 to the upper dust storage area S1 becomes relatively slow, and the flow velocity of the air flowing from the first accommodation area A1 to the processing area A0 becomes relatively fast. Since the flow velocity of the air flowing from the outside of the housing 10 to the upper dust storage area S1 is relatively slow, it is possible to suppress the dust outside the housing 10 from entering the inside of the housing 10 through the upper air inlet 78a. On the other hand, since the flow velocity of the air flowing from the first accommodation area A1 to the processing area A0 is relatively fast, it is difficult for the cutting powder generated in the processing area A0 to flow back to the first accommodation area A1. As a result, it is difficult for the cutting powder to adhere to the processing mechanism moving device 24.

[0059] In addition, some of the dust that has entered the interior of the housing 10 through the upper air inlet 78a may not be stored in the upper dust storage area S1 and may enter the first accommodation area A1. However, according to the present embodiment, since the flow velocity of the air flowing from the first accommodation area A1 to the processing area A0 is relatively high, the dust that has entered the first accommodation area A1 can be quickly guided to the processing area A0. Therefore, it is difficult for the dust that has entered the housing 10 from the outside to adhere to the processing mechanism moving device 24.

[0060] According to the present embodiment, the cutting machine 100 includes a third wall portion 63 that partitions a first accommodation area A1 where the processing mechanism 20 and the processing mechanism moving device 24 are disposed, and a second accommodation area A2 where the clamp moving device 50 is disposed. As a result, the cutting powder adhering to the processing mechanism 20 does not adhere to the clamp moving device 50.

[0061] According to the present embodiment, a first opening 61a is formed in the first wall portion 61, and a second opening 62a is formed in the second wall portion 62. The area of the lower right air inlet 78d is larger than the area of the first opening 61a and also larger than the area of the second opening 62a. As a result, the flow velocity of the air flowing from the outside of the housing 10 to the lower right dust storage area S4 becomes relatively slow, and the flow velocity of the air flowing from the first accommodation area A1 or the second accommodation area A2 to the processing area A0 becomes relatively fast. Since the flow velocity of the air flowing from the outside of the housing 10 to the lower right dust storage area S4 is relatively slow, the entry of the dust outside the housing 10 into the interior of the housing 10 through the lower right air inlet 78d is suppressed. On the other hand, since the flow velocity of the air flowing from the first accommodation area A1 or the second accommodation area A2 to the processing area A0 is relatively fast, the cutting powder generated in the processing area A0 is less likely to flow back to the first accommodation area A1 and the second accommodation area A2. As a result, it is possible to prevent the cutting powder from adhering to the processing mechanism moving device 24 and the clamp moving device 50.

[0062] In addition, a part of the dust that has entered the interior of the housing 10 through the lower right intake port 78d may not be stored in the lower right dust storage area S4 and may enter the first storage area A1 or the second storage area A2. However, according to the present embodiment, since the air flow velocity from the first storage area A1 or the second storage area A2 to the processing area A0 is relatively fast, the dust that has entered the first storage area A1 or the second storage area A2 can be quickly guided to the processing area A0. Therefore, it is difficult for dust that has entered from outside the housing 10 to adhere to the processing mechanism moving device 24 and the clamp moving device 50.

[0063] As described above, one embodiment of the present invention has been described, but the above embodiment is merely an example. Various other embodiments are possible.

[0064] For example, the cutting machine 100 may be configured such that the area of the ventilation port 81a is larger than the area of the upper intake port 78a. By configuring the cutting machine 100 in this way, the air flow velocity from the dust storage area S1 to the first storage area A1 is slower than the air flow velocity from outside the housing 10 to the upper dust storage area S1. As a result, it is difficult for dust to enter from the upper dust storage area S1 to the first storage area A1, and dust is likely to be stored in the upper dust storage area S1. Therefore, it is difficult for dust to adhere to the processing mechanism moving device 24.

[0065] Further, the cutting machine 100 may be configured such that the cross-sectional area of the air flow path in the gap 81d is larger than the area of the lower right intake port 78d, and the cross-sectional area of the air flow path in the opening 82d is also larger than the area of the lower right intake port 78d. By configuring the cutting machine 100 in this way, the air flow velocity from the lower right dust storage area S4 to the first storage area A1 or the second storage area A2 is slower than the air flow velocity from outside the housing 10 to the lower right dust storage area S4. As a result, it is difficult for dust to enter from the lower right dust storage area S4 to the first storage area A1 or the second storage area A2, and dust is likely to be stored in the lower right dust storage area S4. Therefore, it is difficult for dust to adhere to the processing mechanism moving device 24 and the clamp moving device 50.

[0066] In the above-described embodiment, four intake ports 78 were formed, one each on the upper surface and the left side surface of the housing 10, and two were formed on the right side surface of the housing 10. However, the number and arrangement of the intake ports 78 are not limited to this, and may be changed as appropriate. Also, along with the change in the number and arrangement of the intake ports 78, the number and arrangement of the dust storage areas may also be changed as appropriate.

[0067] The shapes and arrangements of the processing area A0, the first storage area A1, the second storage area A2, the processing tool exchange area A3, and the control area A4 are not limited to only the above-described embodiment, and can be changed as appropriate. For example, the third wall portion 63 that separated the first storage area A1 and the second storage area A2 may not be provided, and the first storage area A1 and the second storage area A2 may be regarded as one storage area.

Explanation of Reference Numerals

[0068] 5 Workpiece 10 Housing 20 Processing mechanism 24 Processing mechanism moving device 30 Clamp (holding device) 50 Clamp moving device (holding device moving device) 61 First wall portion (second partitioning member) 61a First opening 62 Second wall portion (second partitioning member) 62a Second opening 63 Third wall portion (third partitioning member) 70 Exhaust port 78 Intake port 80 First partitioning member 81 First air flow portion 82 Second air flow portion 100 Cutting machine

Claims

1. A housing, a first partitioning member that partitions the interior of the housing into a dust storage area and a storage area that allow air to flow between them, a second partitioning member that partitions the interior of the housing into the storage area and a processing area that allow air to flow between them, an air inlet formed in the housing and communicating the outside of the housing with the dust storage area, an exhaust port formed in the housing and communicating the processing area with the outside of the housing, a holding device disposed in the processing area for gripping a workpiece, a processing mechanism disposed in the storage area for cutting the workpiece gripped by the holding device, a holding device moving device disposed in the storage area for moving the holding device, a processing mechanism moving device disposed in the storage area for moving the processing mechanism, and when air in the processing area is sucked and discharged from the exhaust port, air flows into the dust storage area from the outside of the housing through the air inlet, and is configured to flow air in the order of the dust storage area, the storage area, and the processing area, a cutting machine.

2. The cutting machine according to claim 1, wherein the first partitioning member is provided so as to face the air inlet.

3. The cutting machine according to claim 1, wherein the first partitioning member is disposed between the air inlet and the processing mechanism moving device or between the air inlet and the holding device moving device.

4. A first opening is formed in the second partitioning member, The cutting machine according to claim 1, wherein the area of the air inlet is larger than the area of the first opening.

5. A first air flow portion is provided in the dust storage area, The cutting machine according to claim 4, wherein the cross-sectional area of the air flow path of the first air flow portion is larger than the area of the air inlet.

6. The cutting machine according to any one of claims 1 to 3, further comprising a third partitioning member that partitions the storage area into a first storage area in which the processing mechanism and the processing mechanism moving device are disposed and a second storage area in which the holding device moving device is disposed.

7. The second partitioning member is formed with a first opening that communicates the processing area with the first storage area and a second opening that communicates the processing area with the second storage area, The cutting machine according to claim 6, wherein the area of the air inlet is larger than the area of the first opening and larger than the area of the second opening.

8. In the dust storage area, a first air flow portion that communicates the dust storage area with the first storage area and a second air flow portion that communicates the dust storage area with the second storage area are provided. The cutting machine according to claim 7, wherein a cross-sectional area of an air flow path in the first air flow portion is larger than an area of the intake port, and a cross-sectional area of an air flow path in the second air flow portion is larger than the area of the intake port.

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