Cutting machine

Abstract

To provide a cutting machine in which operability of an operation switch can be improved.SOLUTION: A cutting machine 100 comprises: an enclosure 10 formed in a box shape; a sheet metal 51 for fixing a panel arranged away from a front surface wall 12 of the enclosure 10; an operation panel 50 fixed to the sheet metal 51 for fixing a panel; an operation switch 52 mounted on the operation panel 50; and a deformation suppressing member 55 provided on the sheet metal 51 for fixing a panel. The deformation suppressing member 55 is extended rearward, from the sheet metal 51 for fixing a panel towards the front surface wall 12.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, a machining tool for cutting a workpiece using a rotating machining tool is known. This machining tool includes a housing, a gripping portion capable of gripping the machining 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 machining tool gripped by the gripping portion can be rotated. While changing the relative positional relationship between the machining tool gripped by the gripping portion and the workpiece in three dimensions, the machining tool rotated by the spindle is brought into contact with the workpiece. Thereby, machining can be performed on the workpiece.

[0003] The machining tool disclosed in Patent Document 1 is provided with an operation switch for a user to operate the machining tool. The operation switch is, for example, a capacitive touch switch that operates when pressed by the user.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The operation switch is attached to, for example, an operation panel provided on the front surface of the housing. When the user presses the operation switch, the operation panel may bend due to the force of pressing the operation switch. Due to this bending of the operation panel, the operability of the operation switch may sometimes be felt to be poor.

[0006] The present invention has been made in view of such a point, and an object thereof is to provide a cutting machine capable of improving the operability of an operation switch.

Means for Solving the Problems

[0007] The cutting machine according to the present invention includes a box-shaped housing, a sheet metal for panel fixing provided outside the housing and spaced apart from the surface of the housing, an operation panel provided on the sheet metal for panel fixing, an operation switch attached to the operation panel, and a deformation suppressing member provided on the back surface of the sheet metal for panel fixing or the surface of the housing and extending in the inner and outer directions of the housing.

[0008] As described above, by providing a deformation suppressing member on the sheet metal for panel fixing provided with the operation panel to which the operation switch is attached, it is possible to suppress the deflection of the operation panel when the user presses the operation switch attached to the operation panel. Thereby, compared with the conventional cutting machine not provided with the deformation suppressing member, the operability of the operation switch can be improved.

Effects of the Invention

[0009] According to the present invention, it is possible to provide a cutting machine capable of improving the operability of an operation switch.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying out the Invention

[0011] Hereinafter, with reference to the drawings, an embodiment of a cutting machine according to an embodiment of the present invention will be described. 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 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 of the inside of the housing 10 as seen from the left. 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. The reference numerals X, Y, and Z in the drawings respectively mean the front-rear direction, left-right direction, and up-down direction. Also, although not particularly shown, in the following description, the direction toward the inside of the cutting machine 100 is referred to as the inner direction, and the direction toward the outside of the cutting machine 100 is referred to as the outer direction. However, these directions are directions 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. 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.

[0014] The workpiece 5 is, for example, disk-shaped. The workpiece 5 is formed according to 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 for 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 FIG. 1, the cutting machine 100 includes a housing 10. The housing 10 is formed in a box shape and has a space inside. As shown in FIG. 2, a processing mechanism 20 and a clamp 30 are provided inside the housing 10. Further, as shown in FIG. 3, a control device 70 is provided inside the housing 10. As shown in FIG. 2, the space inside the housing 10 is partitioned into a plurality of areas such as a processing area A1 and a storage area A2. The cutting process on the workpiece 5 is performed in the processing area A1. The storage area A2 is arranged above the processing area A1. The processing mechanism 20 and the like are stored in the storage area A2.

[0016] 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 center 100. A 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. A 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. A 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 in parallel with 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. A front wall 12 is connected to the front end of the bottom wall 11. The front wall 12 extends upward while inclining rearward 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. As shown in FIG. 3, two openings 12a are formed in the front wall 12.

[0017] A door 17 is provided in front of the housing 10. As shown in FIG. 2, 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 in the door 17. The window portions 19 are provided in the door 17 such that when the door 17 is closed, the window portions 19 and the openings 12a are approximately 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.

[0018] FIG. 4 is a perspective view of the machining mechanism 20. The machining mechanism 20 is for machining the workpiece 5. 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. The machining mechanism 20 includes a spindle 21 and a tool gripping portion 22 that grips the machining tool 8. Further, as shown in FIG. 2, the machining mechanism 20 includes a spindle rotating device 23 that rotates the spindle 21, and a machining mechanism moving device 24 that can move the spindle 21 in the left-right direction Y and the up-down direction Z. The machining mechanism moving device 24 is composed of a left-right moving device 24Y and an up-down moving device 24Z. When the workpiece 5 is not being machined, the machining mechanism 20 is disposed in the accommodation area A2. When machining the workpiece 5, the machining mechanism moving device 24 moves the machining tool 8 from the accommodation area A2 to the machining area A1.

[0019] 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 up-down 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 about the central axis extending in the up-down direction Z. The configuration of the spindle rotating device 23 is not particularly limited, and may be, for example, an electric motor.

[0020] 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 the present embodiment, the machining tool 8 has a cutting edge portion 8a at its tip. The cutting machine 100 is pre-provided with a plurality of machining tools 8 having different diameters and shapes of the cutting edge portion 8a. 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 up-down 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.

[0021] 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, 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.

[0022] Figure 5 is a plan view of the clamp 30. The clamp 30 is a member that grips the workpiece during cutting. The clamp 30 is arranged in the machining area (see Figure 2). The workpiece 5 is mounted on the 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 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 arranged 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.

[0023] 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.

[0024] 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 connected 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 rearward. That is, when the support member 40 is moved rearward 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, similar to the processing mechanism moving device 24, the support member moving mechanism may be a mechanism having a ball screw.

[0025] 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.

[0026] The second portion 42 is disposed to the right of the second clamping portion 32. A second rotating shaft 45 extending in the left - right direction Y is connected to the second portion 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.

[0027] As shown in FIG. 1, an operation panel 50 is provided in front of the housing 10. The operation panel 50 is provided below the door 17. The operation panel 50 is formed of, for example, acrylic resin or the like. The operation panel 50 is a plate-like member extending in the left-right direction Y and the up-down direction Z along the front wall 12. The operation panel 50 has different lengths in the left-right direction Y at the upper and lower portions. The length of the upper portion of the operation panel 50 in the left-right direction Y is substantially equal to the length of the housing 10 in the left-right direction Y. The length of the lower portion of the operation panel 50 in the left-right direction Y is about half of the length of the housing 10 in the left-right direction Y. The operation panel 50 does not extend to the lower right portion of the front surface of the cutting machine 100. A drawer 57 is provided in the lower right portion of the front surface of the cutting machine 100. The drawer 57 is a space where the user can freely store work tools and the like used by the user. The drawer 57 is movable in the front-rear direction X through the lower right portion of the front surface of the cutting machine 100 where the operation panel 50 does not extend.

[0028] FIG. 6 is an enlarged view of a portion of the operation panel 50 of the cutting machine 100. FIG. 7 is a cross-sectional view taken along line B-B in FIG. 6. As shown in FIG. 7, a panel fixing sheet metal 51 is provided on the back surface of the operation panel 50. Here, the back surface of the operation panel 50 means the surface facing the inside of the operation panel 50. The operation panel 50 is fixed to the panel fixing sheet metal 51. The fixing method of the operation panel 50 is not particularly limited. For example, it may be fixed using screws or may be fixed by a method such as adhesion. The panel fixing sheet metal 51 is formed of, for example, a steel plate or the like. The outer peripheral shape of the panel fixing sheet metal 51 is the same as the shape of the operation panel 50. The panel fixing sheet metal 51 is formed with holes through which the wiring 52b of the operation switch 52 described later passes. The left end portion of the panel fixing sheet metal 51 is connected to the front end of the left side wall 13. The right end portion of the panel fixing sheet metal 51 is connected to the front end of the right side wall 14. The panel fixing sheet metal 51 and the front wall 12 are spaced apart from each other. That is, a space 51A is formed between the panel fixing sheet metal 51 and the front wall 12.

[0029] As shown in FIG. 6, an operation switch 52 is provided on the operation panel 50. The operation switch 52 is arranged at the center of the machining machine 100 in the left - right direction Y. In the present embodiment, the operation switch 52 is a capacitive switch. The use of the operation switch 52 is not particularly limited. For example, the operation switch 52 may be a power switch of the machining machine 100, a start switch for starting machining, an emergency stop switch for emergency - stopping machining, or the like. Further, a display 53 for indicating the status of the machining machine 100 is provided to the left of the operation switch 52.

[0030] As shown in FIG. 7, the operation switch 52 includes an operation part 52a, a wiring 52b, and a substrate 52c. The operation part 52a is a part pressed by the user. The operation part 52a is adhered to the back surface of the operation panel 50. The operation part 52a is protected by the operation panel 50. The wiring 52b is provided from the operation part 52a toward the rear (i.e., the inside of the housing 10). The wiring 52b passes through the space 51A in the front - rear direction X. The wiring 52b electrically connects the operation part 52a and the substrate 52c. The substrate 52c has an electric circuit for performing predetermined processes such as signal transmission when the operation part 52a is operated. The substrate 52c is arranged inside the housing 10. However, as shown in FIG. 2, the substrate 52c is arranged in a substrate arrangement area A3 which is an area different from the machining area A1 so that the cutting powder generated when machining the workpiece 5 does not adhere to the substrate 52c. The substrate 52c is electrically connected to a control device 70 described later.

[0031] As shown in Fig. 7, a deformation suppression member 55 extending rearward is provided on the sheet metal 51 for panel fixing. The deformation suppression member 55 is formed of a steel material. The shape of the deformation suppression member 55 is cylindrical. The deformation suppression member 55 is disposed in a space 51A between the sheet metal 51 for panel fixing and the front wall 12. The length of the deformation suppression member 55 in the front-rear direction X is shorter than the distance between the sheet metal 51 for panel fixing and the front wall 12. That is, the deformation suppression member 55 and the front wall 12 are not in contact with each other, and a gap is provided between the deformation suppression member 55 and the front wall 12. As shown in Fig. 6, one deformation suppression member 55 is disposed at each of the left lower end portion of the cutting machine 100, the right lower end portion of the cutting machine 100, and the peripheral portion of the operation switch 52. The deformation suppression member 55 provided at the peripheral portion of the operation switch 52 is disposed at the center in the left-right direction Y of the cutting machine 100 and to the right of the operation switch 52, and is disposed between the operation switch 52 and the drawer 57.

[0032] The control device 70 is a device that controls the operation of the cutting machine 100. The control device 70 is electrically connected to the spindle rotation device 23 and the processing mechanism moving device 24 of the processing mechanism 20, the support member moving mechanism, the first axis rotation device, the second axis rotation device, the operation switch 52, etc., and controls the operations of these. The configuration of the control device 70 is not particularly limited. The control device 70 is, for example, a microcomputer. Note that the control device 70 does not necessarily have to be provided inside the cutting machine 100. For example, the control device 70 may be a computer installed outside the cutting machine 100 and communicably connected to the cutting machine 100 via wire or wireless.

[0033] As shown in FIG. 8, when the user presses the operation switch 52, the operation panel 50 bends backward. When the operation panel 50 bends backward, the sheet metal 51 for panel fixing also bends backward. As a result, the deformation suppressing member 55 fixed to the sheet metal 51 for panel fixing moves backward. When the deformation suppressing member 55 moves backward by the amount of the gap between the deformation suppressing member 55 and the front wall 12 provided when the operation panel 50 is not bent, the deformation suppressing member 55 comes into contact with the front wall 12. In a state where the deformation suppressing member 55 is in contact with the front wall 12, the bending of the operation panel 50 is restricted by the deformation suppressing member 55.

[0034] According to the present embodiment, the cutting machine 100 includes a housing 10 formed in a box shape, a sheet metal 51 for panel fixing disposed apart from the front wall 12 of the housing 10, an operation panel 50 fixed to the sheet metal 51 for panel fixing, an operation switch 52 attached to the operation panel 50, and a deformation suppressing member 55 provided on the sheet metal 51 for panel fixing. The deformation suppressing member 55 extends rearward from the sheet metal 51 for panel fixing toward the front wall 12. Thereby, when the operation switch 52 is pressed by the user and the operation panel 50 bends, the deformation suppressing member 55 comes into contact with the front wall 12, so that the bending of the operation panel 50 can be suppressed to a certain amount or less. Thereby, breakage of the operation panel 50 can be prevented, and the operation feeling when the user presses the operation switch 52 can be improved.

[0035] According to the present embodiment, the deformation suppressing member 55 is disposed around the operation switch 52. Thereby, the bending of the operation panel 50 can be suppressed as compared with the case where the deformation suppressing member 55 is not provided around the operation switch 52.

[0036] If there is no gap provided between the front wall 12 and the deformation suppressing member 55, depending on the machining accuracy of each member of the housing 10 and the assembly accuracy of the housing 10, it may not be possible to attach the deformation suppressing member 55. However, according to the present embodiment, a gap is provided between the deformation suppressing member 55 and the front wall 12. Thereby, even if the machining accuracy of each member of the housing 10 and the assembly accuracy of the housing 10 are somewhat poor, the deformation suppressing member 55 can be attached.

[0037] According to the present embodiment, the deformation suppression member 55 is formed of a steel material. When the deformation suppression member 55 is in contact with the front wall 12, the force applied by the user to press the operation switch 52 becomes a compressive force that attempts to compress the deformation suppression member 55. By using a material with high rigidity as the material of the deformation suppression member 55, deformation of the deformation suppression member 55 due to this compressive force can be prevented. If the deformation suppression member 55 deforms, the effect of suppressing the deflection of the operation panel 50 may decrease. According to the present embodiment, since the deformation suppression member 55 is difficult to deform, it is possible to prevent a decrease in the effect of suppressing the deflection of the operation panel 50 caused by the deformation of the deformation suppression member 55.

[0038] According to the present embodiment, the interior of the housing 10 is partitioned into a plurality of areas including a machining area A1 where machining is performed on the workpiece. The operation switch 52 includes an operation portion 52a operated by the user and a substrate 52c having a circuit that performs a predetermined process when the operation portion 52a is operated. The substrate 52c is disposed inside the housing 10, but is disposed in a substrate arrangement area A3 which is an area different from the machining area A1. Thereby, the user does not accidentally touch the substrate 52c, and the cutting powder generated during cutting does not adhere to the substrate 52c.

[0039] 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.

[0040] In the above embodiment, three deformation suppression members 55 were provided, but the number of deformation suppression members 55 is not particularly limited. Also, the arrangement of the deformation suppression members 55 is not particularly limited. However, if the deformation suppression members 55 are provided around the operation switch 52, the deflection of the operation panel 50 can be more effectively suppressed.

[0041] In the above-described embodiment, the material of the deformation suppression member 55 was a steel material, but it is not limited thereto. For example, the deformation suppression member 55 may be formed of a material such as aluminum. However, using a material with high rigidity as the material of the deformation suppression member 55 can more effectively suppress the deflection of the operation panel 50.

[0042] In the above-described embodiment, the deformation suppression member 55 had a hollow cylindrical shape, but the shape of the deformation suppression member 55 is not particularly limited. For example, the deformation suppression member 55 may be a solid member. Further, the outer shape of the deformation suppression member 55 is not limited to a cylindrical shape and may be a polygonal prism shape or the like.

[0043] In the above-described embodiment, the deformation suppression member 55 was provided on the panel fixing sheet metal 51, but the deformation suppression member 55 may be provided on the front wall 12 of the housing 10. In this case, the deformation suppression member 55 extends forward from the front wall 12 (i.e., outward of the housing 10).

Explanation of Reference Numerals

[0044] 5 Workpiece 10 Housing 50 Operation Panel 51 Panel Fixing Sheet Metal (Panel Fixing Member) 52 Operation Switch 52a Operation Portion 52c Substrate 55 Deformation Suppression Member 100 Cutting Machine A1 Machining Area A3 Substrate Arrangement Area

Claims

1. A housing formed in a box shape, A panel fixing member provided outside the housing and arranged at a distance from the surface of the housing, An operation panel fixed to the panel fixing member, An operation switch attached to the operation panel, A deformation suppressing member provided on the back surface of the panel fixing member or the surface of the housing and extending in the inner and outer direction of the housing, and a machining machine comprising the same.

2. The machining machine according to claim 1, wherein the deformation suppressing member is arranged around the operation switch.

3. The machining machine according to claim 1, wherein a gap is provided between the surface of the housing or between the panel fixing member and the deformation suppressing member.

4. The machining machine according to claim 1, wherein the deformation suppressing member is formed of a steel material.

5. The inside of the housing is partitioned into a plurality of areas including a machining area where machining is performed on a workpiece and a substrate arrangement area which is an area different from the machining area, The operation switch, An operation part operated by a user, A substrate having a circuit for performing a predetermined process when the operation part is operated, and the machining machine according to claim 1, wherein the substrate is arranged in the substrate arrangement area. ​

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