Cutting machine

Abstract

To provide a cutting machine capable of sufficiently supplying ions generated by an ionizer to cutting chips generated during cutting.SOLUTION: A cutting machine comprises: a clamp that holds a workpiece 5; a processing mechanism that rotatably holds a processing tool 8 about an axis in the longitudinal direction of the processing tool 8; and a static elimination device 60 that neutralizes the workpiece 5 and the processing tool 8 during cutting. The static elimination device 60 includes an ionizer 61 that generates ions, and an air injection unit 63 that injects air toward a contact portion between the workpiece 5 and the processing tool 8 during cutting and the vicinity thereof.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a machining tool.

Background Art

[0002] Conventionally, as disclosed in Patent Document 1, there is known a machining tool that cuts a workpiece using a rotating cutting tool. This machining tool includes a housing formed in a box shape, a gripping portion capable of gripping the cutting tool, and a spindle for rotating the gripping portion. The gripping portion and the spindle are disposed inside the housing. By rotating the gripping portion by the spindle, the cutting tool gripped by the gripping portion can be rotated. While changing the relative positional relationship between the cutting tool gripped by the gripping portion and the workpiece in three dimensions, the rotating cutting tool is brought into contact with the workpiece by the spindle. Thereby, machining can be performed on the workpiece.

[0003] The machining tool disclosed in Patent Document 1 is provided with an ionizer. An ionizer is a device that generates ions. The ions generated by the ionizer can remove the static electricity charged on the cutting powder generated when cutting the workpiece. Thereby, it is possible to suppress the adhesion of cutting powder to each part inside the housing.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Cutting powder is generated at the contact portion between the workpiece and the cutting tool. In order to sufficiently remove the static electricity from the cutting powder, it is necessary to sufficiently supply the ions generated by the ionizer to the contact portion between the workpiece and the cutting tool and the vicinity thereof.

[0006] If the ionizer is arranged close to the workpiece or the machining tool, ions are less likely to diffuse to locations other than the workpiece and the machining tool. Therefore, it is easy to supply ions to the contact portion between the workpiece and the machining tool and the vicinity thereof. However, when the ionizer is arranged close to the workpiece or the machining tool, cutting powder is likely to adhere to the ionizer. When foreign matter such as cutting powder adheres to the ionizer, the amount of ions generated by the ionizer decreases. Therefore, even when the ionizer is arranged close to the workpiece or the machining tool, the desired static elimination effect may not be obtained.

[0007] The present invention has been made in view of such a point, and an object thereof is to provide a machining machine capable of sufficiently supplying ions generated by an ionizer to cutting powder generated during cutting.

Means for Solving the Problems

[0008] The machining machine according to the present invention includes a clamp that grips a workpiece and is movable in a first direction between a machining position and a detaching position, and a machining mechanism that rotatably grips a machining tool about the longitudinal direction of the machining tool and is movable in a second direction orthogonal to the first direction and a third direction orthogonal to the first direction and the second direction. The machining machine also includes a static elimination device that eliminates static electricity from the workpiece and the machining tool. The static elimination device includes an ionizer that generates ions and an air injection unit that injects air toward the machining tool and the workpiece gripped by the clamp at the machining position.

[0009] Cutting powder is generated at the contact portion between the workpiece and the machining tool. In order to sufficiently neutralize the cutting powder, it is necessary to sufficiently supply ions generated by the ionizer to the contact portion between the workpiece and the machining tool and the vicinity thereof. According to the above cutting machine, the ions generated by the ionizer are sprayed onto the workpiece and the machining tool during cutting by the air sprayed from the air injection portion provided in the neutralizing device. Thereby, even if the ionizer is disposed at a position relatively far from the workpiece or the machining tool, the ions generated by the ionizer can be sufficiently supplied to the contact portion between the workpiece and the machining tool and the vicinity thereof without diffusing to locations other than the workpiece and the machining tool.

Advantages of the Invention

[0010] According to the present invention, it is possible to provide a cutting machine capable of sufficiently supplying ions generated by an ionizer to cutting powder generated during cutting.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0012] Hereinafter, a cutting machine according to an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described here is not intended to particularly limit the present invention. Also, members and parts having the same function are denoted by the same reference numerals, and overlapping descriptions are omitted or simplified as appropriate.

[0013] FIG. 1 is a perspective view showing a cutting machine 100 of the present embodiment. FIG. 2 is a view of the inside of the housing 10 as seen from the left side. FIG. 3 is a view showing the cutting machine 100 when the door 17 is opened. In the drawings, the reference numerals F, Rr, L, R, U, and D respectively mean the front, rear, left, right, top, and bottom of the cutting machine 100. In the drawings, the reference numerals X, Y, and Z 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.

[0014] In the present embodiment, the cutting machine 100 produces an object by cutting a workpiece 5 (see FIG. 5). Here, the type of the object is not particularly limited, but for example, it is a dental prosthesis. Examples of dental 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 prosthesis from the workpiece 5. However, the field in which the cutting machine 100 is used is not limited to the dental field.

[0015] 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.

[0016] As shown in FIG. 1, the machining machine 100 includes a housing 10. The housing 10 is formed in a box shape and has a space inside. Inside the housing 10, a machining mechanism 20 and a clamp 30 are provided. As shown in FIG. 2, the space inside the housing 10 is partitioned into a plurality of areas such as a machining area A1 and a storage area A2. Machining of the workpiece 5 is performed in the machining area A1. The storage area A2 is arranged above the machining area A1. The storage area A2 houses the machining mechanism 20 and the like, which will be described later.

[0017] The housing 10 has a bottom wall 11, a front wall 12, a left side wall 13, a right side wall 14, a top wall 15, and a rear wall 16. Each member of the housing 10 is formed of a steel plate or the like. The bottom wall 11 extends in the front-rear direction X and the left-right direction Y and constitutes the bottom surface of the machining machine 100. The left side wall 13 is connected to the left end of the bottom wall 11. The left side wall 13 extends in the vertical direction Z from the left end of the bottom wall 11. The right side wall 14 is connected to the right end of the bottom wall 11. The right side wall 14 extends in the vertical direction Z from the right end of the bottom wall 11. The rear wall 16 is connected to the rear end of the bottom wall 11. The rear wall 16 extends in the vertical direction Z from the rear end of the bottom wall 11. The left end of the rear wall 16 is connected to the rear end of the left side wall 13, and the right end of the rear wall 16 is connected to the rear end of the right side wall 14. The top wall 15 is provided parallel to the bottom wall 11. The top wall 15 is connected to the upper ends of the left side wall 13, the right side wall 14, and the rear wall 16. The front wall 12 is connected to the front end of the bottom wall 11. The front wall 12 extends upward while inclining backward from the front end of the bottom wall 11. The left end of the front wall 12 is connected to the left side wall 13, and the right end of the front wall 12 is connected to the right side wall 14. Two openings 12a are formed in the front wall 12 (see FIG. 3).

[0018] As shown in FIG. 1, 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 wall 13 and the right side wall 14. The slide rails extend in the vertical direction Z along the front wall 12. By moving the door 17 along the slide rails, the door 17 can open and close the opening 12a of the front wall 12. Two window portions 19 are provided on the door 17. The window portions 19 are provided on the door 17 such that when the door 17 is closed, the window portions 19 and the opening 12a are substantially in the same position in the vertical direction Z and the horizontal 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.

[0019] The processing mechanism 20 is for machining the workpiece 5. The processing mechanism 20 machines the workpiece 5 by bringing the processing tool 8 into contact with the workpiece 5 while rotating the processing tool 8. As shown in FIG. 2, the processing mechanism 20 includes a spindle 21 and a tool gripping portion 22 that grips the processing tool 8. Further, the processing mechanism 20 includes a spindle rotating device 23 that rotates the spindle 21, and a processing mechanism moving device 24 that can move the spindle 21 in the horizontal direction Y and the vertical direction Z. The processing mechanism moving device 24 is composed of a horizontal moving device 24Y and a vertical moving device 24Z. When the workpiece 5 is not being machined, the processing mechanism 20 is arranged in the accommodation area A2. As shown in FIG. 4, when machining the workpiece 5, the processing mechanism moving device 24 moves the processing tool 8 from the accommodation area A2 to the processing area A1.

[0020] The spindle 21 rotates the tool gripping portion 22 and the processing tool 8 gripped by the tool gripping portion 22 about the longitudinal axis. The spindle 21 extends, for example, in the vertical direction Z. A spindle rotating device 23 is connected to the spindle 21. When the spindle rotating device 23 is driven, the spindle 21 rotates around 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.

[0021] The tool holding part 22 holds the processing tool 8 and is provided on the spindle 21. Specifically, the tool holding part 22 is provided on the bottom surface of the spindle 21. In the present embodiment, the processing tool 8 has a cutting tool part at its tip. The cutting machine 100 is provided in advance with a plurality of processing tools 8 having different shapes of cutting tool parts. The tool holding part 22 selectively holds one of the plurality of processing tools 8. When the spindle 21 rotates around the central axis extending in the vertical direction Z, the tool holding part 22 and the processing tool 8 held by the tool holding part 22 rotate around the central axis of the processing tool 8.

[0022] 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. Specifically, the spindle 21 moves in the up - down direction Z and also moves in the front - rear direction X. 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, an electric motor for rotating the ball screw, and the like. Also, the up - down moving device 24Z may also be a mechanism having a ball screw, similar to the left - right moving device 24Y.

[0023] As shown in FIG. 2, the processing mechanism 20 is provided with an air - blow device 28. The air - blow device 28 is provided on the side of the spindle 21. The air - blow device 28 injects air in the up - down direction Z from the lower end of the air - blow device 28. The supply source of the air injected by the air - blow device 28 is not particularly limited. For example, it may be a compressor installed outside the cutting machine 100. By the air - blow 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 cutting, but since the air - blow device 28 injects air toward the workpiece 5 and the processing tool 8, the workpiece 5 and the processing tool 8 can be cooled.

[0024] FIG. 5 is a plan view of the clamp 30. The clamp 30 is a member that holds the workpiece 5 during machining. The clamp 30 is disposed in the machining area A1 (see FIG. 2). The workpiece 5 is attached to the adapter 6, and the clamp 30 holds the adapter 6 attached to the workpiece 5. Thereby, the clamp 30 holds the workpiece 5. A circular fitting hole 6a is formed in the adapter 6. The workpiece 5 is attached to 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 the present embodiment, the clamp 30 has a shape corresponding to a part of the shape of the workpiece 5 and a shape corresponding to 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. The workpiece 5 is held by being clamped between the first clamping portion 31 and the second clamping portion 32.

[0025] The connecting portion 33 connects the first clamping portion 31 and the second clamping portion 32 and is bridged over 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.

[0026] In this embodiment, the clamp 30 is supported by the 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. The support member 40 can be moved in the front-rear direction X by a support member moving mechanism (not shown). The support member moving mechanism is provided to the right of the support member 40. Since the clamp 30 is fixed to the support member 40, when the support member 40 moves in the front-rear direction X, the clamp 30 also moves in the front-rear direction X. In this embodiment, the support member moving mechanism moves the support member 40 obliquely in the front-rear direction so as to descend backward. That is, when the support member 40 is moved backward by the support member moving mechanism, it also moves downward. When the support member 40 is moved forward by the support member moving mechanism, it also moves upward. The configuration of the support member moving mechanism is not particularly limited. For example, the support member moving mechanism may be a mechanism having a ball screw, similar to the processing mechanism moving device 24.

[0027] In the following description, the position of the clamp 30 when the support member 40 is in the rear as shown in FIG. 4 is referred to as the processing position. Also, the position of the clamp 30 when the support member 40 is in the front as shown in FIG. 2 is referred to as the attachment / detachment position. The cutting process on the workpiece 5 is performed by moving the clamp 30 to the processing position. The attachment of the workpiece 5 to the clamp 30 and the removal of the workpiece 5 from the clamp 30 are performed at the attachment / detachment position. In the cutting machine 100 of this embodiment, the attachment of the workpiece 5 to the clamp 30 and the removal of the workpiece 5 from the clamp 30 are performed by the user.

[0028] As shown in FIG. 5, the first portion 41 is disposed behind the connecting portion 33 and is connected to the connecting portion 33 via a first rotating shaft 44 extending in the front-rear direction X. The clamp 30 is configured to be rotatable about the first rotating shaft 44. A first shaft rotating device (not shown) is connected to the first rotating shaft 44. The first shaft rotating device is a driving device that rotates the clamp 30 about the first rotating shaft 44. The configuration of the first shaft rotating device is not particularly limited, and for example, it may be an electric motor or the like.

[0029] The second part 42 is arranged to the right of the second clamping part 32. A second rotating shaft 45 extending in the left - right direction Y is connected to the second part 42. The support member 40 is configured to be rotatable about the second rotating shaft 45. Here, when the support member 40 rotates, the clamp 30 rotates about the second rotating shaft 45 in the same manner as the support member 40. A second - shaft rotating device (not shown) is connected to the second rotating shaft 45. The second - shaft rotating device is a driving device that rotates the clamp 30 about the second rotating shaft 45. The configuration of the second - shaft rotating device is not particularly limited, and for example, it may be an electric motor or the like.

[0030] As described above, the machining machine 100 performs cutting on the workpiece 5 by bringing the rotating machining tool 8 into contact with the workpiece 5. Therefore, during cutting, static electricity is generated by friction on the machining tool 8 and the workpiece 5. As a result, the machining tool 8, the workpiece 5, and the cutting powder generated during cutting are charged. In this embodiment, since the housing 10 is made of a material such as a steel plate, if the cutting powder is charged, the cutting powder is likely to adhere to the housing 10. Therefore, as shown in FIG. 3, the machining machine 100 is provided with a static - eliminator 60. The static - eliminator 60 is a device that eliminates static electricity from the workpiece 5, the machining tool 8, and the cutting powder when the machining mechanism 20 is cutting the workpiece 5. As shown in FIG. 6, the static - eliminator 60 is provided on the side of the clamp 30 at the machining position. A part of the static - eliminator 60 is arranged in the machining area A1 inside the housing 10. As shown in FIG. 7, the static - eliminator 60 includes an ionizer 61, a protective cover 62, an air injection part 63, and a back - flow prevention sealing material 64.

[0031] The ionizer 61 is a device that generates ions. Various known methods for generating ions can be applied, and there is no particular limitation. For example, a method of generating ions using corona discharge may be used. In this case, the ionizer 61 has a plurality of needle-shaped electrodes. Corona discharge is a phenomenon in which discharge occurs at the tip when a high voltage is applied to the needle-shaped electrode. This discharge ionizes the air around the electrode. The ionized air is attracted by electromagnetic force to the charged workpiece 5, the machining tool 8, and the cutting powder, etc. When the charged workpiece 5, the machining tool 8, and the cutting powder, etc. are electrically neutralized with the ionized air, the workpiece 5, the machining tool 8, and the cutting powder, etc. are discharged.

[0032] The protective cover 62 is a member that protects the ionizer 61 so that the cutting powder generated during cutting does not adhere to the ionizer 61. The protective cover 62 is a cylindrical member that extends in the left - right direction Y. Here, the term "cylindrical" includes not only a circular - cylindrical shape but also a rectangular - cylindrical shape and the like. The dimensions of the protective cover 62 are not particularly limited, but here, the length of the protective cover 62 in the axial direction (i.e., the left - right direction) is equal to or greater than the diameter of the protective cover 62, specifically, it is twice or more the diameter. The ionizer 61 is disposed inside the protective cover 62. The ionizer 61 is disposed at a distance from the inner peripheral surface of the protective cover 62. A gap is formed between the outer peripheral surface of the ionizer 61 and the inner peripheral surface of the protective cover 62. The protective cover 62 is inserted into the inner wall 65. The inner wall 65 is a plate - like member provided inside the housing 10 and is spaced apart from the left - side wall 13. In this embodiment, the inner wall 65 is formed of a steel plate. A space A3 is formed between the inner wall 65 and the left - side wall 13. A part of the protective cover 62 is disposed in the machining area A1 inside the housing 10. Another part of the protective cover 62 is disposed in the space A3 between the left - side wall 13 and the inner wall 65. The protective cover 62 is formed of, for example, a resin material. As shown in FIG. 6, an opening 62a is formed in the end surface of the protective cover 62 on the clamp 30 side. The inner diameter of the opening 62a is not particularly limited, but in this embodiment, it is smaller than the inner diameter of the protective cover 62. The opening 62a opens to the right. The air ionized by the ionizer 61 is supplied to the workpiece 5 and the machining tool 8 during cutting through the opening 62a.

[0033] Air is injected from the air injection unit 63. The arrow indicated by the symbol F in FIGS. 6 and 7 represents the flow of the air injected from the air injection unit 63. The air injection unit 63 injects air inside the protective cover 62. Here, the supply source of the air injected from the air injection unit 63 is not particularly limited. For example, the supply source may be a compressor or the like installed outside the housing 10. Note that the supply source of the air injected from the air blow device 28 and the supply source of the air injected from the air injection unit 63 may be the same or different. As shown in FIG. 7, the air injection unit 63 is inserted into the protective cover 62 from the end on the side opposite to the side where the opening 62a of the protective cover 62 is formed. The air injection unit 63 is configured to be able to inject air in the left-right direction Y. The air injection unit 63, the opening 62a of the protective cover 62, and the contact portion C between the workpiece 5 and the machining tool 8 during machining are arranged substantially in a straight line. Thereby, the air injection unit 63 can inject air to the workpiece 5 held by the clamp 30 at the machining position. The air injected from the air injection unit 63 passes near the ionizer 61 on the way to reach the opening 62a of the protective cover 62. Therefore, the air injected from the air injection unit 63 is ionized. Thereby, the static eliminator 60 can inject the ionized air through the opening 62a to the contact portion C between the workpiece 5 and the machining tool 8 during machining and the vicinity thereof.

[0034] The backflow prevention sealing material 64 is provided at the end on the side opposite to the opening 62a side of the protective cover 62. The backflow prevention sealing material 64 is a member for preventing the air injected from the air injection unit 63 from leaking out from a location other than the opening 62a of the protective cover 62. A hole (not shown) is formed in the central portion of the backflow prevention sealing material 64. Through this hole, the air injection unit 63 is inserted into the protective cover 62. In the present embodiment, the backflow prevention sealing material 64 is formed of sponge-like rubber, but the material of the backflow prevention sealing material 64 is not limited to this.

[0035] As shown in FIG. 2, an exhaust duct 80 is provided at the rear and lower part of the housing 10. The exhaust duct 80 extends from the processing area A1 inside the housing 10 to the outside of the housing 10. A dust collector 85 is installed outside the housing 10. The dust collector 85 is connected to the end of the exhaust duct 80 on the outside of the housing 10. The configuration of the dust collector 85 is not particularly limited, and for example, it may have a configuration with a fan. By rotating this fan, the dust collector 85 can suck the air inside the processing area A1 together with the cutting powder through the exhaust duct 80.

[0036] Hereinafter, a series of operations when the cutting machine 100 according to the present embodiment performs cutting on the workpiece 5 will be described. FIG. 8 is a flowchart showing an example of the operation of the cutting machine 100. In step S01, the user attaches the workpiece 5 to the clamp 30 at the attachment / detachment position. In step S02, the cutting machine 100 moves the clamp 30 from the attachment / detachment position to the processing position. As a result, the workpiece 5 moves to the processing position. In step S03, the cutting machine 100 cuts the workpiece 5 while relatively changing the positional relationship between the processing mechanism 20 and the workpiece 5. In step S03, the cutting machine 100 operates the air blow device 28, the static eliminator 60, and the dust collector 85 to cut the workpiece 5 while discharging the cutting powder from the inside of the housing 10. When the cutting of the workpiece 5 is completed, in step S04, the cutting machine 100 moves the clamp 30 from the processing position to the attachment / detachment position. In step S05, the user removes the workpiece 5 from the clamp 30. Through the above operations, the cutting machine 100 performs cutting on the workpiece 5.

[0037] According to this embodiment, the cutting machine 100 includes a clamp 30 that grips the workpiece 5 and is movable in the front-rear direction X, a machining mechanism 20 that grips the machining tool 8 so as to be rotatable about its longitudinal axis and is movable in the left-right direction Y and the up-down direction Z, and a static eliminator 60 that neutralizes the workpiece 5 and the machining tool 8. The static eliminator 60 includes an ionizer 61 and an air injection unit 63 that injects air onto the workpiece 5 and the machining tool 8 during cutting. Since the air injected from the air injection unit 63 passes near the ionizer 61, it is ionized by the ionizer 61. Even if the static eliminator 60 is disposed at a position relatively far from the workpiece 5 or the machining tool 8 so that cutting powder does not easily adhere to the static eliminator 60, ionized air can be efficiently supplied to the workpiece 5 and the machining tool 8. Therefore, the static elimination effect by the static eliminator 60 can be improved. Further, even if cutting powder adheres to the ionizer 61, the cutting powder can be blown off by the air injected from the air injection unit 63. Thereby, a decrease in the static elimination effect of the static eliminator 60 due to the adhesion of cutting powder can be suppressed.

[0038] According to this embodiment, the static eliminator 60 includes a protective cover 62 that protects the ionizer 61. Therefore, it is difficult for cutting powder to adhere to the ionizer 61. Further, an opening 62a is formed in the end face of the protective cover 62 on the clamp 30 side. The air injected from the air injection unit 63 passes through the opening 62a and reaches the workpiece 5 and the machining tool 8. By the protective cover 62 restricting the flow direction of the air injected from the air injection unit 63, ionized air can be efficiently supplied to the workpiece 5 and the machining tool 8. Further, even if cutting powder adheres near the opening 62a of the protective cover 62, the adhered cutting powder can be blown off by the air injected from the air injection unit 63. Thereby, it is difficult for cutting powder to enter the inside of the protective cover 62, and it is difficult for cutting powder to adhere to the ionizer 61.

[0039] According to this embodiment, the static eliminator 60 is provided with a backflow prevention sealing material 64. Thereby, it is possible to suppress the air jetted from the air injection unit 63 from leaking to the outside of the protective cover 62 from a location other than the opening 62a of the protective cover 62. Thereby, ionized air can be supplied to the workpiece 5 and the machining tool 8 more efficiently.

[0040] According to this embodiment, the static eliminator 60 is disposed on the side of the clamp 30 at the machining position. Thereby, it is easy to supply ionized air to the contact portion C between the workpiece 5 and the machining tool 8, and the cutting powder can be efficiently static-eliminated.

[0041] According to this embodiment, the machining mechanism 20 is provided with an air blow device 28 that jets air in the vertical direction Z. Thereby, the cutting powder can be blown away. Further, it is possible to suppress the temperature rise of the workpiece 5 and the machining tool 8 due to the cutting heat generated during cutting. Furthermore, since the air injection unit 63 of the static eliminator 60 jets air in the left-right direction Y, the injection direction of the air jetted from the air blow device 28 and the injection direction of the air jetted from the air injection unit 63 are orthogonal to each other. The ionized air jetted from the air injection unit 63 and the non-ionized air jetted from the air blow device 28 are not easily mixed. Thereby, while suppressing a reduction in the static elimination effect of the static eliminator 60, the cutting powder can be blown away.

[0042] According to this embodiment, the cutting machine 100 includes an exhaust duct 80 that communicates the inside of the housing 10 with the outside of the housing 10, and a dust collector 85 connected to the exhaust duct 80. Thereby, the cutting powder generated during cutting can be discharged from the inside of the housing 10.

[0043] As described above, one embodiment of the present invention has been described. However, the above embodiment is merely an example of the embodiments of the present invention, and the present invention can be implemented in various forms.

[0044] In the above-described embodiment, the clamping device 30 is movable in the front-rear direction X, and the cutting machine 100 is configured such that the processing mechanism 20 is movable in the left-right direction Y and the up-down direction Z. However, the moving directions of the clamping device 30 and the processing mechanism 20 are not limited thereto. For example, the cutting machine 100 may be configured such that the clamping device 30 is movable in the up-down direction Z and the processing mechanism 20 is movable in the front-rear direction X and the left-right direction Y.

[0045] In the above-described embodiment, the processing mechanism 20 is disposed above the clamping device 30, and the static eliminator 60 is disposed on the side of the clamping device 30 at the processing position. However, these positional relationships are not limited to only the above-described embodiment. For example, the cutting machine 100 may be configured such that the processing mechanism 20 is disposed on the side of the clamping device 30 and the static eliminator 60 is disposed above the clamping device 30. Further, the cutting machine 100 may be configured such that both the processing mechanism 20 and the static eliminator 60 are disposed above the clamping device 30.

Description of Reference Numerals

[0046] 5 Workpiece 8 Processing tool 20 Processing mechanism 28 Air blow device 30 Clamping device 60 Static eliminator 61 Ionizer 62 Protection cover 62a Opening 63 Air injection part 64 Backflow prevention sealing material 80 Exhaust duct 85 Dust collector

Claims

1. A clamp that grips a workpiece and is movable in a first direction between a machining position and a detaching / attaching position, a machining mechanism that rotatably grips a machining tool about the longitudinal direction of the machining tool and is movable in a second direction orthogonal to the first direction and a third direction orthogonal to both the first direction and the second direction, and a static eliminator that neutralizes the workpiece and the machining tool, and comprises: The static eliminator an ionizer that generates ions, and an air injection unit that injects air toward the machining tool and the workpiece gripped by the clamp at the machining position. A cutting machine.

2. The static eliminator comprises a cylindrical protective cover, the ionizer is disposed inside the protective cover, an opening is provided in an end surface of the protective cover on the clamp side, and the air injection unit is configured to inject air toward the inside of the protective cover. The cutting machine according to claim 1.

3. A backflow prevention sealing material is provided at an end of the protective cover on the side opposite to the side where the opening of the protective cover is formed. The cutting machine according to claim 2.

4. The machining mechanism is disposed above the clamp, and the static eliminator is disposed laterally of the clamp at the machining position. The cutting machine according to claim 1.

5. An air blow device that is provided in the machining mechanism and injects air, and an injection direction of the air injected from the air injection unit of the static eliminator is orthogonal to an injection direction of the air injected from the air blow device. The cutting machine according to claim 1.

6. A housing that houses the clamp, the machining mechanism, and the static eliminator, an exhaust duct that communicates the inside of the housing with the outside of the housing, and a dust collector that is provided outside the housing and is connected to the exhaust duct. The cutting machine according to claim 1.

Images