Control panel and machine tool

Abstract

To provide a control panel and a machine tool capable of suppressing deterioration of a holding member.SOLUTION: The control panel includes a housing box 21, an insertion hole 25, a cover 30, and a holding member 80. The housing box 21 houses electrical components. The insertion hole 25 is provided in the left wall 215 of the storage box 21, and the electric wire W electrically connected to the electrical component can be inserted through the insertion hole 25. The cover 30 includes an upper wall 411, a lower wall 513, a front wall 412, and a partition wall 421, and covers the insertion hole 25. The front wall 412 is provided with a notch 48 for disposing the electric wire W inside the cover 30. The notch 48 is aligned with the clamping member 80 in the left-right direction. The notch 48 is located below the insertion hole 25. The partition wall 421 is connected to the left wall 215 and partitions the notch 48 and the insertion hole 25. The holding member 80 is housed in the cover 30 and holds the electric wire W. The direction of the electric wire W from the notch 48 toward the clamping member 80 is reversed in the space portion 300.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a control panel and a machine tool. [Background technology]

[0002] A control panel including a storage box that stores electrical components for controlling a machine tool is known. The control panel described in Patent Document 1 includes an insertion hole and a clamping member. The insertion hole is provided in a predetermined wall that constitutes the storage box. An electric wire is inserted through the insertion hole. The clamping member has a first clamping portion and a second clamping portion. The first clamping portion has a first extending plate, a first elastic portion, and a second elastic portion. The first extending plate extends in a direction away from the predetermined wall. The first elastic portion and the second elastic portion protrude from the first extending plate toward the second clamping portion. The second clamping portion has a second extending plate and an opposing elastic portion. The second extending plate extends in a direction away from the predetermined wall. The opposing elastic portion protrudes from the second extending plate toward the first clamping portion. The clamping member clamps the electric wire between the first elastic portion, the second elastic portion, and the opposing elastic portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2022-156269 Summary of the Invention [Problem to be solved by the invention]

[0004] In the control panel, the first elastic portion and the opposing elastic portion are exposed to the outside of the storage box through the insertion hole, which may cause deterioration of the first elastic portion and the opposing elastic portion due to dust generated by machining the machine tool and cleaning fluid used in machining the machine tool.

[0005] An object of the present invention is to provide a control panel and a machine tool that can suppress deterioration of clamping members. [Means for solving the problem]

[0006] A control panel according to a first aspect includes a storage box for storing electrical components for controlling a machine tool, and an insertion hole provided in a predetermined wall constituting the storage box, through which an electric wire electrically connected to the electric component can be inserted. The control panel further includes a cover provided on the outer surface of the predetermined wall for covering the insertion hole, and a clamping member stored in the cover for clamping the electric wire, wherein the cover has a notch for guiding the electric wire into the cover and a space portion in which the direction of the electric wire from the notch toward the clamping member can be reversed, and the cover has a plurality of walls surrounding the insertion hole, and some of the plurality of walls include a partition wall that contacts the predetermined wall and separates the notch from the insertion hole.

[0007] According to the first aspect, the interior of the cover has a so-called labyrinth structure, separated by partition walls. The electric wires change direction in the space and proceed in a U-shape, so dust and cleaning fluid that enter the cover through the placement hole are less likely to adhere to the clamping member. Therefore, the control panel can prevent deterioration of the clamping member.

[0008] In a first aspect, the clamping member may have a first clamping portion and a second clamping portion that clamps the electric wire between the first clamping portion and the cover, and the cover may have the plurality of walls and a first cover portion that supports the first clamping portion, and a second cover portion that covers the insertion hole and the first cover portion and supports the second clamping portion. The notch and the insertion hole are separated by a partition wall. The electric wire changes direction in the space and is then clamped between the first clamping portion and the second clamping portion. Therefore, dust and cleaning liquid that enter the cover through the notch are unlikely to reach the insertion hole. Therefore, the control panel can prevent dust and cleaning liquid from entering the storage box.

[0009] In a first aspect, the first cover portion has a support plate that supports the first clamping portion, and the support plate is arranged on the side where the notch is provided in a predetermined direction from the end of the partition plate that is away from the predetermined wall, and the notch may be provided in a part of a wall other than the partition wall that surrounds the insertion hole, different from the part surrounding the insertion hole. Since the electric wire advances from the notch in a direction away from the predetermined wall and passes through the clamping member and the insertion hole in that order, dust and cleaning liquid that enter the cover through the arrangement hole are unlikely to reach the insertion hole. Therefore, the control panel can prevent dust and cleaning liquid from entering the inside of the storage box.

[0010] In the first aspect, the support plate may have a fixing hole for fixing the electric wire at an end different from the end connected to the partition wall. Since the electric wire arranged inside the cover is fixed to the fixing hole, the clamping member can stably clamp the electric wire between the first clamping portion and the second clamping portion.

[0011] A machine tool according to a second aspect is characterized by including the control panel according to any one of the first aspects. The second aspect has the same effects as the first aspect. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a perspective view of the machine tool 1 as seen from above the front right. [Figure 2] FIG. 2 is a perspective view of the control panel 20 seen from the upper left rear. [Figure 3] FIG. 2 is a perspective view of the control panel 20 seen from above the front left. [Figure 4] FIG. [Figure 5] FIG. 2 is a perspective view of the control panel 20 with the second cover portion 50 removed, viewed from above and rear left. [Figure 6] FIG. 2 is a rear view of the control panel 20 with the second cover portion 50 removed. [Figure 7] FIG. 4 is a perspective view of the first cover portion 40 as viewed from the upper left front. [Figure 8] FIG. 4 is a perspective view of the first cover portion 40 as viewed from the upper rear right. [Figure 9] FIG. 4 is a perspective view of the second cover portion 50 as viewed from the upper right rear. [Figure 10] 5 is a cross-sectional view of the control panel 20 taken along line XX in FIG. 4, as viewed from the rear. [Figure 11] 10 is a cross-sectional view of the control panel 20 taken along line XI-XI shown in FIG. 4, viewed from above and rear left. DETAILED DESCRIPTION OF THE INVENTION

[0013] An embodiment of the present invention will be described below. In the following description, left and right, front and rear, and up and down will be used as indicated by arrows in the drawings. The left and right directions, front and rear directions, and up and down directions of the machine tool 1 correspond to the X-axis direction, Y-axis direction, and Z-axis direction of the machine tool 1, respectively. The orientation of the control panel 20 also follows this pattern.

[0014] The structure of machine tool 1 will be described with reference to Figure 1. Machine tool 1 is a vertical machine tool with a spindle 9 extending in the Z-axis direction. Machine tool 1 comprises a base 2, a machine section 5, a spindle 9, a machine cover (not shown), and a control panel 20. Base 2 is an iron base. Machine section 5 is provided at the upper rear of base 2. Machine section 5 rotatably holds spindle 9. Tool 3 is attached to spindle 9, and it performs cutting processes on a workpiece (not shown) fixed to the top of work table 13. Work table 13 is provided at the upper front of base 2. A machine cover is fixed to the top of base 2 and surrounds the machine section 5 and work table 13. A cleaning fluid is sprayed inside the machine cover to clean and cool the workpiece. Dust is also generated during cutting of the workpiece.

[0015] The structure of the control panel 20 will be described with reference to Figures 2 to 11. As shown in Figures 2 and 3, the control panel 20 comprises a storage box 21, a cover 30, and a clamping member 80. The storage box 21 is substantially rectangular, and is provided at the rear of the machine section 5 (see Figure 1). The storage box 21 stores electrical components 90 that control the machine tool 1. The electrical components 90 are, for example, input / output boards, control boards, DC switching power supplies, breakers, inverters, servo amplifiers, etc. The electrical components 90 are driven by receiving power from a power source external to the machine tool 1.

[0016] The storage box 21 has a front wall 211, a lower wall 212, an upper wall 213, a right wall 214, and a left wall 215. The front wall 211 extends vertically, perpendicular to the front-to-rear direction. The front wall 211 is fixed to the rear of the machine unit 5. The lower wall 212 extends rearward from the lower end of the front wall 211. The upper wall 213 extends rearward from the upper end of the front wall 211. The right wall 214 extends rearward from the right end of the front wall 211 and connects to the right end of the lower wall 212 and the right end of the upper wall 213. The left wall 215 extends rearward from the left end of the front wall 211 and connects to the left end of the lower wall 212 and the left end of the upper wall 213.

[0017] The storage box 21 opens at the rear. The storage box 21 is provided with a door 23 that opens and closes the opening. For example, when inspecting the control panel 20, an operator opens the door 23 and inspects, replaces, repairs, etc., the various electrical components 90. A grip 24 that can switch between locking and unlocking the door 23 is provided on the lower left side of the door 23. The grip 24 is gripped by the operator when opening or closing the door 23, and switches between locking and unlocking the door 23 in response to the operator's operation.

[0018] 3, the left wall 215 is provided with an insertion hole 25 that passes through the left wall 215 in the left-right direction. The insertion hole 25 is provided in the center of the left wall 215 in the front-rear direction, and has a rectangular shape that is longer in the front-rear direction than in the up-down direction in a side view.

[0019] As shown in FIG. 5, the cover 30 is provided on the left surface of the left wall 215 and is disposed outside the storage box 21. The cover 30 is made of, for example, metal, and includes a first cover portion 40 and a second cover portion 50. The first cover portion 40 is fixed to the left surface of the left wall 215. The second cover portion 50 covers the first cover portion 40 from the left and is detachable from the first cover portion 40. A detailed description of the first cover portion 40 and the second cover portion 50 will be given later.

[0020] The clamping member 80 has a first clamping portion 60 and a second clamping portion 70. The clamping member 80 clamps the electric wire W between the first clamping portion 60 and the second clamping portion 70. The first clamping portion 60 is provided on the first cover portion 40 and has elasticity. The first clamping portion 60 is, for example, a sponge made of polyurethane resin. The first clamping portion 60 has a lower elastic portion 61, an upper elastic portion 62, a front elastic portion 64, and a rear elastic portion 63. The lower elastic portion 61 and the upper elastic portion 62 are rectangular parallelepipeds extending in the front-to-rear direction. The lower elastic portion 61 is located above the upper elastic portion 62. The front elastic portion 64 and the rear elastic portion 63 are rectangular parallelepipeds extending in the up-down direction. The front elastic portion 64 is connected to the front end of the lower elastic portion 61 and the front end of the upper elastic portion 62. The rear elastic portion 63 is connected to the rear end of the lower elastic portion 61 and the rear end of the upper elastic portion 62. That is, the first clamping portion 60 as a whole extends in the up-down direction and the front-rear direction.

[0021] The second clamping portion 70 is provided on the second cover portion 50 and has elasticity. The second clamping portion 70 is, for example, a sponge made of polyurethane resin. The second clamping portion 70 has substantially the same shape as the first clamping portion 60. The second clamping portion 70 includes a lower elastic portion 71, an upper elastic portion 72, a front elastic portion 74, and a rear elastic portion 73. The lower elastic portion 71 and the upper elastic portion 72 are rectangular parallelepipeds extending in the front-to-rear direction. The lower elastic portion 71 is located above the upper elastic portion 72. The front elastic portion 74 and the rear elastic portion 73 are rectangular parallelepipeds extending in the up-down direction. The front elastic portion 74 connects the front end of the lower elastic portion 71 and the front end of the upper elastic portion 72. The rear elastic portion 73 connects the rear end of the lower elastic portion 71 and the rear end of the upper elastic portion 72. In other words, the second clamping portion 70 as a whole extends in the up-down direction and the front-to-rear direction.

[0022] The structure of the first cover part 40 will be described with reference to Figures 7 and 8. The first cover part 40 is box-shaped overall and opens downward and in the left-right directions. The first cover part 40 has an upper wall 411, a front wall 412, a rear wall 413, a partition wall 421, a support plate 422, and joint walls 431, 432, and 433. The upper wall 411 has a rectangular shape that is longer in the front-to-rear direction than in the left-to-right direction in a plan view. The right end of the upper wall 411 is fixed to the left surface of the left wall 215 by, for example, welding. The upper wall 411 is located above the insertion hole 25 (see Figure 10).

[0023] The front wall 412 extends downward from the front end of the upper wall 411 and has a rectangular shape that is longer in the vertical direction than in the horizontal direction when viewed from the front. The right end of the front wall 412 is fixed to the left surface of the left wall 215 by welding, for example. The left end of the front wall 412 is located at approximately the same position as the left end of the upper wall 411 in the horizontal direction.

[0024] The front wall 412 is provided with a notch 48 that penetrates the front wall 412 in the front-rear direction. The notch 48 has a rectangular shape that is longer in the vertical direction than in the horizontal direction when viewed from the front. The notch 48 is located below the front wall 412.

[0025] The rear wall 413 extends downward from the rear end of the upper wall 411 and has a rectangular shape that is longer in the up-down direction than in the left-right direction in rear view. The right end of the rear wall 413 is fixed to the left surface of the left wall 215 by, for example, welding. The left end of the rear wall 413 is located at approximately the same position in the left-right direction as the left end of the upper wall 411. The bottom end of the rear wall 413 is located at approximately the same position in the up-down direction as the bottom end of the front wall 412.

[0026] The partition wall 421 has a rectangular shape that is longer in the front-to-rear direction than in the left-to-right direction in a plan view. The right end of the partition wall 421 is fixed to the left surface of the left wall 215, for example, by welding. The partition wall 421 is located between the insertion hole 25 and the notch 48 in the up-down direction. The front end of the partition wall 421 is connected to the front wall 412, and the rear end of the partition wall 421 is connected to the rear wall 413. The left end of the partition wall 421 is located between the left end of the top wall 411 and the notch 48 in the left-to-right direction. The first cover part 40 has an opening 49 surrounded by the top wall 411, the partition wall 421, the front wall 412, and the rear wall 413.

[0027] The support plate 422 extends downward from the left end of the partition wall 421 and has a rectangular shape that is longer in the front-to-rear direction than in the up-down direction in a side view. The lower end of the support plate 422 is located at approximately the same position in the up-down direction as the lower ends of the front wall 412 and the rear wall 413. The front end of the support plate 422 is connected to the front wall 412, and the rear end of the partition wall 421 is connected to the rear wall 413. The support plate 422 is located between the left end of the upper wall 411 and the notch 48 in the left-to-right direction.

[0028] As shown in Figure 10, the first clamping unit 60 is fixed to the left surface of the support plate 422 with an adhesive. That is, the first clamping unit 60 is supported by the support plate 422 at a position closer to the left wall 511 than the cutout 48. The upper end of the first clamping unit 60 is at approximately the same position as the upper end of the support plate 422 in the vertical direction. The lower end of the first clamping unit 60 is higher than the lower end of the support plate 422. The left end of the first clamping unit 60 is located to the right of the left end of the upper wall 411. That is, the first clamping unit 60 is disposed inside the first cover part 40 in rear view (see Figure 6).

[0029] As shown in FIGS. 7 and 8 , a portion of the support plate 422 below the first cover portion 40 is referred to as an extension portion 423. The extension portion 423 is provided with a screw hole 4221 penetrating the extension portion 423 in the left-right direction, and a plurality of fixing holes 47. The screw hole 4221 is provided in the center of the extension portion 423 in the front-rear direction. The fixing hole 47 has a rectangular shape that is longer in the front-rear direction than in the up-down direction in a side view. The screw hole 4221 and the plurality of fixing holes 47 are aligned in the front-rear direction on the extension portion 423. In this embodiment, there are four fixing holes 47, with two fixing holes 47 provided forward of the screw hole 4221 and two fixing holes 47 provided rearward of the screw hole 4221.

[0030] The joint wall 431 extends downward from the left end of the upper wall 411. The lower end of the joint wall 431 is located higher than the partition wall 421. A screw hole 4311 is provided in the joint wall 431. The screw hole 4311 is provided in the center of the joint wall 431. The joint wall 432 extends forward from the left end of the front wall 412. Three screw holes 4321 are provided in the joint wall 432. The three screw holes 4321 are lined up in the vertical direction in the joint wall 432. The joint wall 433 extends rearward from the left end of the rear wall 413. Three screw holes 4331 are provided in the joint wall 433. The three screw holes 4331 are lined up in the vertical direction in the joint wall 432.

[0031] The structure of the second cover part 50 will be described with reference to Figure 9. The second cover part 50 is box-shaped and opens to the right and in the front-rear directions. The second cover part 50 has a left wall 511, an upper wall 512, a lower wall 513, a front wall 514, and a rear wall 515.

[0032] The left wall 511 has a rectangular shape that is longer in the front-to-rear direction than in the up-to-down direction. When the second cover part 50 is attached to the first cover part 40, the left wall 511 comes into contact with the first cover part 40 from the left. When the second cover part 50 is attached to the first cover part 40, the upper end of the left wall 511 is located slightly above the upper wall 411. The lower end of the left wall 511 is located below the lower end of the front wall 412, the lower end of the rear wall 413, and the lower end of the support plate 422. The front end of the left wall 511 is located at approximately the same position as the front end of the joint wall 432 in the front-to-rear direction. The rear end of the left wall 511 is located at approximately the same position as the rear end of the joint wall 433 in the front-to-rear direction.

[0033] The left wall 511 is provided with through holes 5311, 5221, 5321, and 5331. The through hole 5311 is located so as to overlap with the screw hole 4311 in a side view. The through hole 5221 is located so as to overlap with the screw hole 4221 in a side view. In this embodiment, there are three through holes 5321, which are located so as to overlap with the three screw holes 4321, respectively, in a side view. In this embodiment, there are three through holes 5331, which are located so as to overlap with the three screw holes 4331, respectively, in a side view.

[0034] As shown in FIGS. 5 and 10 , the second clamping portion 70 is fixed to the right surface of the left wall 511 with an adhesive. The upper end of the second clamping portion 70 is located below the through-hole 5311. The lower end of the second clamping portion 70 is located above the through-hole 5221. The front end of the second clamping portion 70 is located rearward of the three through-holes 5321. The rear end of the second clamping portion 70 is located forward of the three through-holes 5331.

[0035] 9, the upper wall 512 extends rightward from the upper end of the left wall 511. The upper wall 512 has a rectangular shape that is longer in the front-to-rear direction than in the left-to-right direction. The left-to-right length of the upper wall 512 is slightly shorter than the left-to-right length of the upper wall 511. The front end of the upper wall 512 is located at approximately the same position as the front end of the left wall 511 in the front-to-rear direction, and the rear end of the upper wall 512 is located at approximately the same position as the rear end of the left wall 511 in the front-to-rear direction.

[0036] The lower wall 513 extends rightward from the lower end of the left wall 511. The lower wall 513 has a rectangular shape that is longer in the front-to-rear direction than in the left-to-right direction. The left-to-right length of the lower wall 513 is approximately the same as the left-to-right length of the upper wall 512, and is slightly shorter than the left-to-right length of the upper wall 411. When the second cover part 50 is attached to the first cover part 40, the front end of the lower wall 513 is in approximately the same position as the front wall 412 in the front-to-rear direction, and is located rearward of the front end of the left wall 511. The rear end of the lower wall 513 is in approximately the same position as the rear wall 413 in the front-to-rear direction, and is located forward of the rear end of the left wall 511. In other words, the lower wall 513 has approximately the same shape as the upper wall 512 in a bottom view.

[0037] The front wall 514 extends upward from the front end of the lower wall 513. The front wall 514 has a rectangular shape that is longer in the left-right direction than in the up-down direction in rear view. When the second cover part 50 is attached to the first cover part 40, the upper end of the front wall 514 is at approximately the same position in the up-down direction as the lower end of the front wall 412 (see Figure 10). The rear wall 515 extends upward from the rear end of the lower wall 513. The rear wall 515 has a rectangular shape that is longer in the left-right direction than in the up-down direction in rear view. The upper end of the rear wall 515 is at approximately the same position in the up-down direction as the lower end of the rear wall 413.

[0038] Attachment of the second cover part 50 to the first cover part 40 and clamping of the electric wire W will be described with reference to Figures 3, 10, and 11. With the first cover part 40 fixed to the left surface of the left wall 215, the worker inserts the electric wire W into the notch 48. The electric wire W inserted through the notch 48 is covered from above by the partition wall 421, from the left by the support plate 422, from the right by the left wall 215, from the front by the front wall 412, and from the rear by the rear wall 413. Therefore, the electric wire W cannot go directly toward the insertion hole 25 located above, but first goes downward beyond the support plate 422 (see Figures 10 and 11).

[0039] The electric wire W that has reached a position below the support plate 422 advances leftward through the gap between the support plate 422 and the lower wall 513, and extends upward to the left of the support plate 422. When the electric wire W reaches above the support plate 422, it extends rightward, passes through the opening 49 and the insertion hole 25, in that order, and enters the inside of the storage box 21. The electric wire W that has passed through the cutout 48 heads downward once, then extends upward, and advances in a U-shape inside the cover 30. Hereinafter, the space below the cutout 48 inside the cover 30 will be referred to as the space portion 300 (see Figures 10 and 11). The electric wire W is fixed to the support plate 422 by a fastening member (not shown) that passes through the fixing hole 47. The electric wire W comes into contact with the first clamping portion 60 from the left. The fastening member is a string or the like.

[0040] With the electric wires W fixed to the support plate 422, the worker attaches the second cover part 50 to the first cover part 40. The worker brings the second cover part 50 into contact with the first cover part 40 from the left (see FIG. 6). The left wall 511 comes into contact with the joint walls 431, 432, and 433. The top wall 512 overlaps with the top wall 411 in the vertical direction. The top end of the front wall 514 comes into contact with the bottom end of the front wall 412. The top end of the rear wall 515 comes into contact with the bottom end of the rear wall 413.

[0041] The bolts B are fastened to the screw holes 4311, 4321, 4321, 4331 via the through holes 5311, 5221, 5321, 5331, and the second cover part 50 is attached to the first cover part 40. When the second cover part 50 is attached to the first cover part 40, the second cover part 50 covers the insertion hole 25 and the first cover part 40. The cover 30 is box-shaped overall, and only the notch 48 is open (see FIGS. 2 and 3).

[0042] When the second cover part 50 is attached to the first cover part 40, the clamping member 80 is stored in the cover 30. The clamping member 80 is positioned between the lower wall 513 and the insertion hole 25 in the up-down direction. The clamping member 80 is aligned with the notch 48 in the left-right direction. The direction of the electric wire W from the notch 48 toward the clamping member 80 in the space part 300 is reversed. The upper end of the clamping member 80 is positioned above the notch 48. In the clamping member 80, the lower elastic portion 71 contacts the lower elastic portion 61 from the left, the upper elastic portion 72 contacts the upper elastic portion 62 from the left, the front elastic portion 74 contacts the front elastic portion 64 from the left, and the rear elastic portion 73 contacts the rear elastic portion 63 from the left. As a result, the clamping member 80 clamps the electric wire W between the first clamping part 60 and the second clamping part 70.

[0043] As described above, the control panel 20 includes the storage box 21, the insertion hole 25, the cover 30, and the clamping member 80. The storage box 21 stores the electrical component 90. The insertion hole 25 is provided in the left wall 215 of the storage box 21, and allows the insertion of the electric wire W electrically connected to the electrical component 90. The cover 30 includes an upper wall 411, a lower wall 513, and a front wall 412, and covers the insertion hole 25. The clamping member 80 is stored in the cover 30 and is positioned between the lower wall 513 and the insertion hole 25 in the up-down direction. The clamping member 80 extends in the up-down and front-rear directions and clamps the electric wire W. The front wall 412 is provided with a notch 48 for arranging the electric wire W inside the cover 30. The notch 48 is aligned with the clamping member 80 in the left-right direction. The notch 48 is positioned below the upper end of the clamping member 80. The cover 30 includes a partition wall 421. The partition wall 421 connects to the left wall 215 and separates the notch 48 from the insertion hole 25. The cover 30 has a so-called labyrinth structure. Because the electric wire W changes direction in the space 300 and advances in a U-shape, even if dust and cleaning fluid generated during the machining of the workpiece enter the cover 30 through the notch 48, the dust and cleaning fluid are less likely to adhere to the clamping member 80. Therefore, the control panel 20 can suppress deterioration of the clamping member 80. In addition, because there is a gap between the bottom wall 513 and the clamping member 80, the excess length of the electric wire W can be stored in the gap between the bottom wall 513 and the clamping member 80, improving the aesthetic appearance of the control panel 20. Furthermore, because the clamping member 80 extends in the vertical and front-to-rear directions, like the left wall 215, the overall size of the cover 30 can be suppressed even if the clamping member 80 is aligned with the notch 48 in the left-to-right direction.

[0044] In the control panel 20, the clamping member 80 has a first clamping portion 60 and a second clamping portion 70 that clamps the electric wire W between the first clamping portion 60 and the second clamping portion 70. The cover 30 has a first cover portion 40 and a second cover portion 50. The first cover portion 40 includes a partition wall 421 and a support plate 422. The partition wall 421 is perpendicular to the vertical direction and is located between the insertion hole 25 and the notch 48 in the vertical direction. The support plate 422 fixes the first clamping portion 60. The second cover portion 50 covers the insertion hole 25 and the first cover portion 40. A left wall 511 of the second cover portion 50 fixes the second clamping portion 70. As a result, the notch 48 and the insertion hole 25 are separated by the partition wall 421. Furthermore, because the partition wall 421 is positioned below the insertion hole 25, dust and cleaning liquid that have entered the cover 30 through the notch 48 are unlikely to reach the insertion hole 25. Therefore, the control panel 20 can prevent dust and cleaning liquid from entering the inside of the storage box 21. Also, the first clamping portion 60 is fixed to the first cover portion 40, and the second clamping portion 70 is fixed to the second cover portion 50. In the cover 30, when the second cover portion 50 is attached to the first cover portion 40, the first clamping portion 60 and the second clamping portion 70 clamp the electric wire W. In this way, the control panel 20 can clamp the electric wire W with a simple configuration.

[0045] In the control panel 20, the first cover portion 40 includes a front wall 412. In the first cover portion 40, the support plate 422 supports the first clamping portion 60 at a position farther to the left of the left wall 215 than the notch 48. As a result, the electric wire W inserted through the notch 48 advances leftward through the gap between the lower wall 513 and the clamping member 80, passes through the clamping member 80 and the insertion hole 25 in that order, and enters the inside of the storage box 21. In this way, the electric wire W inserted through the notch 48 advances in a direction away from the left wall 215. Therefore, even if dust and cleaning liquid enter the inside of the cover 30 through the notch 48, they are unlikely to reach the insertion hole 25. Therefore, the control panel 20 can prevent dust and cleaning liquid from entering the inside of the storage box 21. Furthermore, since the front wall 412 and the support plate 422 in which the notch 48 is provided are both included in the first cover part 40, the control panel 20 can achieve the labyrinth structure of the cover 30 with a simple configuration.

[0046] In the control panel 20, the support plate 422 includes an extending portion 423. The extending portion 423 is a portion of the support plate 422 that is lower than the first cover portion 40. The extending portion 423 is provided with a plurality of fixing holes 47 that penetrate the extending portion 423 in the left-right direction. The electric wires W arranged inside the cover 30 are fixed to the support plate 422 by fastening members (not shown) that are inserted through the fixing holes 47. As a result, the electric wires W arranged inside the cover 30 are fixed via the fixing holes 47, and therefore the clamping member 80 can stably clamp the electric wires W between the first clamping portion 60 and the second clamping portion 70.

[0047] The present invention also provides the following advantages. Because the left wall 511 is in surface contact with the joint walls 431, 432, and 433 and the bolt B is fastened, the second cover part 50 is less likely to detach from the first cover part 40. Therefore, the control panel 20 can prevent dust and cleaning fluid generated during cutting from entering through the gap between the first cover part 40 and the second cover part 50. Furthermore, when the clamping member 80 clamps the electric wire W, the reaction force from the electric wire W may cause the second clamping part 70 to move away from the first clamping part 60, which may result in the clamping of the electric wire W being released. In the control panel 20, the screw holes 4221, 4311, 4321, and 4331 are located inside the clamping member 80 in a side view, and the first cover part 40 and the second cover part 50 are fixed evenly. Therefore, the second clamping portion 70 is less likely to separate from the first clamping portion 60 due to the reaction force from the electric wires W, and the clamping member 80 can stably clamp the electric wires W. Furthermore, when the clamping member 80 clamps multiple electric wires W, a gap may occur between the first clamping portion 60 and the second clamping portion 70 depending on how the electric wires W are arranged. In the control panel 20, the clamping member 80 is stored in the cover 30. Therefore, even when multiple electric wires W are inserted through the insertion hole 25 via the cover 30, it is possible to prevent dust and cleaning liquid from entering the inside of the storage box 21 through the insertion hole 25, regardless of how the multiple electric wires W are arranged. Furthermore, in the cover 30, the first clamping portion 60 is covered from above by the upper wall 411, and the second clamping portion 70 is covered from above by the upper wall 512. Therefore, even if dust and cleaning liquid fall from the upper wall 411 or the upper wall 512 when the second cover part 50 is removed from the first cover part 40, the control panel 20 can prevent the fallen dust and cleaning liquid from adhering to the clamping member 80.

[0048] The present invention can be modified in various ways from the above-described embodiment. The various modifications described below can be combined with each other as long as no contradiction occurs.

[0049] In the above embodiment, the insertion hole 25 is provided in the left wall 215, but it may be provided in any wall of the storage box 21, not limited to the left wall 215. The insertion hole 25 may be provided in the bottom wall 212, for example.

[0050] The configuration of the cover 30 may be changed as appropriate. The upper walls 411, 512 may extend intersecting the vertical direction, and are not limited to being perpendicular to the vertical direction. The upper walls 411 and 512 are not limited to being parallel to each other. The lower wall 513 may extend intersecting the vertical direction, and are not limited to being perpendicular to the vertical direction. The lower wall 513 and the upper walls 411, 512 are not limited to being parallel to each other. The front wall 412 may extend intersecting the front-rear direction, and are not limited to being perpendicular to the front-rear direction.

[0051] Notch 48 is not limited to being provided in front wall 412, as long as it is aligned with clamping member 80 in the left-right direction and located lower than the upper end of clamping member 80. Notch 48 may be provided, for example, in rear wall 413, front wall 514, or rear wall 515. In this embodiment, notch 48 is a notch cut out from the right end of front wall 412, but notch 48 may also be a circular hole penetrating front wall 412 in the front-rear direction.

[0052] The arrangement of the clamping member 80 may be changed as appropriate as long as the clamping member 80 is housed in the cover 30 and is positioned between the lower wall 513 and the insertion hole 25 in the vertical direction.

[0053] The configuration of the clamping member 80 may be changed as appropriate. In the above embodiment, the clamping member 80 clamps the electric wire W between the first clamping portion 60 and the second clamping portion 70. In contrast, the clamping member 80 may be composed of a single elastic member, and the clamping member 80 may be bent in a direction intersecting the up-down direction to clamp the electric wire W. The clamping member 80 may be provided on the support plate 422, for example, and may clamp the electric wire W between itself and the left wall 511. The clamping member 80 may clamp the electric wire W between three or more clamping portions. The clamping member 80 does not have to be elastic.

[0054] The shape of the first clamping portion 60 may be changed as appropriate. The first clamping portion 60 may be, for example, a plate-like portion extending in the front-rear and vertical directions. The shape of the second clamping portion 70 may be changed as appropriate. The second clamping portion 70 may be, for example, a plate-like portion extending in the front-rear and vertical directions. The first clamping portion 60 and the second clamping portion 70 do not have to have substantially the same shape. For example, the first clamping portion 60 may have a lower elastic portion 61, an upper elastic portion 62, a front elastic portion 64, and a rear elastic portion 63 as in the above embodiment, and the second clamping portion 70 may be a plate-like portion extending in the front-rear and vertical directions and in contact with the lower elastic portion 61, the upper elastic portion 62, the front elastic portion 64, and the rear elastic portion 63.

[0055] The configuration of the cover 30 may be changed as appropriate. The cover 30 is not limited to being composed of the first cover portion 40 and the second cover portion 50. The cover 30 may be composed of, for example, the first cover portion 40, the second cover portion 50, and a third cover portion.

[0056] The configuration of the first cover part 40 may be changed as appropriate. The first cover part 40 may not have the partition wall 421. The partition wall 421 may extend so as to intersect the vertical direction, and is not limited to being perpendicular to the vertical direction. The first cover part 40 may not have the support plate 422. The support plate 422 may not support the first clamping part 60. In this case, the first clamping part 60 may be supported by, for example, the front wall 412 and the rear wall 413. The support plate 422 may extend so as to intersect the horizontal direction, and is not limited to being perpendicular to the horizontal direction. The support plate 422 may not be connected to the partition wall 421.

[0057] The configuration of the second cover portion 50 may be changed as appropriate, as long as the second cover portion 50 covers the insertion hole 25 and the first cover portion 40 and supports the second clamping portion 70. For example, the second cover portion 50 may not include a front wall 514. In this case, the front wall 412 of the first cover portion 40 may extend to the lower wall 513. The front wall 514 may not contact the front wall 412. The second cover portion 50 may not include a rear wall 515. In this case, the rear wall 413 of the first cover portion 40 may extend to the lower wall 513. The rear wall 515 may not contact the rear wall 413.

[0058] The first cover part 40 does not have to include the front wall 412. In this case, the front wall 412 may be included in the second cover part 50. The arrangement of the support plate 422 may be changed as appropriate. That is, the support plate 422 does not have to support the first clamping part 60 at a position farther to the left of the left wall 215 than the notch 48. The clamping member 80 only needs to be aligned with the notch 48 in the left-right direction, and may be provided to the right of the notch 48. In this case, the clamping member 80 is located closer to the left wall 215 than the notch 48.

[0059] The support plate 422 may not include the extending portion 423. The support plate 422 may extend above the first clamping portion 60, or the portion of the support plate 422 above the first clamping portion 60 may be the extending portion. The extending portion 423 may not be provided with the fixing hole 47. The configuration of the fixing hole 47 may be changed as appropriate. The extending portion 423 may protrude leftward from the left surface of the support plate 422, and the fixing hole 47 may be a hole that penetrates the extending portion 423 in the vertical direction. The electric wire W may not be fixed to the support plate 422 by a fastening member. The electric wire W may be fixed to the support plate 422 by, for example, a clip or the like.

[0060] Other modifications will now be described. The configuration of the machine tool 1 may be modified as appropriate. In the above embodiment, the machine tool 1 is a vertical machine tool in which the spindle 9 extends in the Z-axis direction, but the machine tool 1 may also be a horizontal machine tool in which the spindle 9 extends in the X-axis or Y-axis direction.

[0061] The first cover part 40 may not include the joint wall 431. The first cover part 40 may not include the joint wall 432. The first cover part 40 may not include the joint wall 433. The first cover part 40 may have an elastic sealing member on at least one of the joint walls 431, 432, 433. The sealing member may be made of, for example, silicone rubber. The joint walls 431, 432, 433 are in contact with the left wall 511 of the second cover part 50, so that the joint walls 431, 432, 433 adhere more closely to the left wall 511, making it more difficult for dust and cleaning liquid to penetrate inside the cover 30. The second cover part 50 may have an elastic sealing member on the left wall 511 at the portion that contacts the joint walls 431, 432, 433.

[0062] The cover 30 may include at least one of the upper wall 411 or the upper wall 512. Therefore, when the first cover part 40 includes the upper wall 411, the second cover part 50 may not include the upper wall 512. When the second cover part 50 includes the upper wall 512, the first cover part 40 may not include the upper wall 411. The first cover part 40 may include a lower wall that overlaps with the lower wall 513 of the second cover part 50 in the vertical direction.

[0063] The cover 30 may have a lid that opens and closes the notch 48. In this case, when the electric wire W is not inserted through the insertion hole 25, the lid closes the notch 48, making it difficult for dust and cleaning liquid to enter the cover 30. [Explanation of symbols]

[0064] 1 Machine tools 20 Control Panel 21 Storage Box 25 Insertion hole 30 Cover 40 First cover part 48 Placement hole 50 Second cover part 60 First clamping part 70 Second clamping part 80 Clamping member 215 Left Wall 411 Upper Wall 412 Front wall 513 Lower wall

Claims

1. a storage box for storing electrical components that control the machine tool; a control panel provided with a predetermined wall constituting the storage box and including an insertion hole through which an electric wire electrically connected to the electrical component can be inserted, a cover provided on an outer surface of the predetermined wall and covering the insertion hole; a clamping member that is housed in the cover and clamps the electric wire, The cover has a notch for guiding the electric wire into the cover; a space portion in which the direction of the electric wire from the notch toward the clamping member can be reversed; Has, the cover has a plurality of walls surrounding the insertion hole, a part of the plurality of walls includes a partition wall that contacts the predetermined wall and separates the notch from the insertion hole; A control panel characterized by:

2. the clamping member has a first clamping portion and a second clamping portion that clamps the electric wire between the first clamping portion and the second clamping portion, The cover is a first cover portion having the plurality of walls and supporting the first clamping portion; a second cover portion that covers the insertion hole and the first cover portion and supports the second clamping portion. The control panel according to claim 1 .

3. the first cover portion has a support plate that supports the first clamping portion, the support plate is disposed on the side where the notch is provided in a predetermined direction from the end of the partition wall that is away from the predetermined wall, The notch is provided in a wall other than the partition wall among the plurality of walls surrounding the insertion hole, in a portion other than the portion surrounding the insertion hole. The control panel according to claim 2 .

4. The support plate has fixing holes for fixing the electric wires at an end different from the end connected to the partition wall. The control panel according to claim 3,

5. A machine tool comprising the control panel according to any one of claims 1 to 4.

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