Machine tool

Abstract

A machine tool includes a magazine for accommodating a tool, a holding portion for holding a workpiece, and a machining chamber surrounding the holding portion and allowing the tool to perform machining, an opening is formed in a wall of the machining chamber, the magazine is disposed on an inner side and an outer side of the machining chamber through the opening, and the machine tool is provided with a cover. The cover covers the tool magazine and has a bottom surface that is inclined downward toward the wall.

Description

Technical Field

[0001] The present technology relates to a machine tool for machining workpieces. Background Art

[0002] There is a machine tool having a machining chamber and a tool storage chamber. The machining chamber and the tool storage chamber are adjacent to each other. A spindle is provided in the machining chamber. The tool storage chamber stores tools. A partition wall is provided between the tool storage chamber and the machining chamber. An opening and a gate are provided in the partition wall. The gate opens and closes the opening. When replacing a tool, the gate is opened, and thus the tool in the tool storage chamber and the tool assembled to the spindle are replaced. A housing member is adjacent to the opening. The housing member guides cutting fluid to the machining chamber and suppresses the intrusion of the cutting fluid into the tool storage chamber (see Patent Document 1).

[0003] Patent Document 1: Japanese Patent No. 6599016 Summary of the Invention

[0004] When the cutting fluid overflows from the housing member, the cutting fluid accumulates in the tool storage chamber.

[0005] The present disclosure has been made in view of such circumstances, and an object thereof is to provide a machine tool in which even if cutting fluid intrudes into a cover covering a tool magazine for storing tools, it easily returns to the machining chamber.

[0006] A machine tool according to an embodiment of the present disclosure includes a tool magazine for storing tools, a holding portion for holding a workpiece, and a machining chamber that surrounds the holding portion and in which the tools perform machining. An opening is formed in a wall of the machining chamber, and the tool magazine is disposed inside and outside the machining chamber through the opening. The machine tool includes a cover that covers the tool magazine and has a bottom surface that slopes downward toward the wall.

[0007] In the present disclosure, the cutting fluid that has intruded into the cover moves from the bottom surface of the cover toward the machining chamber.

[0008] In the machine tool according to an embodiment of the present disclosure, the bottom surface of the cover includes a first bottom surface that is located inside the machining chamber and slopes downward toward the wall.

[0009] In the present disclosure, the cutting fluid on the first bottom surface moves toward the machining chamber.

[0010] In the machine tool according to an embodiment of the present disclosure, a gap is formed between the first bottom surface and the wall.

[0011] In the present disclosure, the cutting fluid moves into the machining chamber through the gap.

[0012] In the machine tool according to an embodiment of the present disclosure, the bottom surface of the cover includes a second bottom surface that is located outside the machining chamber and slopes downward toward the wall.

[0013] In the present disclosure, the cutting fluid on the second bottom surface moves toward the machining chamber.

[0014] In a machine tool according to an embodiment of the present disclosure, the cover includes an upper cover that covers the upper side of the tool magazine and is mounted on the wall, and an inner cover that is located inside the machining chamber. The upper cover is configured to be able to change the mounting position in the vertical direction relative to the inner cover.

[0015] In the present disclosure, the upper cover can be provided at a position corresponding to the vertical position of the tool magazine.

[0016] In a machine tool according to an embodiment of the present disclosure, the cover includes an outer cover that is located outside the machining chamber and is mounted on the wall. A window through which the inside of the cover can be visually confirmed is provided in the outer cover.

[0017] In the present disclosure, the tools stored in the tool magazine can be confirmed through the window.

[0018] In a machine tool according to an embodiment of the present disclosure, the vertical position of the tool magazine is selected from a plurality of vertical positions. The outer cover includes a mounting portion having a size corresponding to the selected vertical position of the tool magazine and is mounted on the wall.

[0019] In the present disclosure, an outer cover having a mounting portion corresponding to the vertical position of the tool magazine can be used.

[0020] A machine tool according to an embodiment of the present disclosure includes a column that supports the tool magazine and the control panel. The machining chamber is disposed on the first surface side of the column, the control panel is disposed on the second surface side of the column opposite to the first surface, and the tool magazine is disposed on the third surface side of the column that intersects the first surface and the second surface. The tools are stored in the tool magazine with the tool tips facing the opposite side of the column. Wiring for connecting the inside of the machining chamber and the control panel is disposed between the tool magazine and the column above the cover.

[0021] In the present disclosure, the wiring can be disposed on the opposite side of the tool tip of the tool.

[0022] In a machine tool according to an embodiment of the present disclosure, the machining chamber includes a detachable side surface portion that intersects the wall, and the cover includes a detachable second side surface portion that faces the side surface portion.

[0023] In the present disclosure, the side surface portion and the second side surface can be detached for maintenance management of the machine tool.

[0024] In the machine tool according to an embodiment of the present disclosure, the cutting fluid immersed in the cover moves from the bottom surface of the cover toward the machining chamber, so it is easy for the cutting fluid to return to the machining chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic perspective view of a machine tool with the machining chamber and the cover omitted.

[0026] Figure 2 is a schematic left view of a machine tool with the machining chamber and the cover omitted.

[0027] Figure 3 is a schematic top view of a machine tool with the machining chamber and the cover omitted.

[0028] Figure 4 is a schematic perspective view of the machine tool.

[0029] Figure 5 is a schematic left view of the machine tool.

[0030] Figure 6 is a schematic top view of the machine tool.

[0031] Figure 7 is a schematic front view of the left rear wall, the right rear wall, the column, and each second tool magazine.

[0032] Figure 8 is a perspective view of the inner cover.

[0033] Figure 9 is a front view of the inner cover.

[0034] Figure 10 is a rear view of the inner cover.

[0035] Figure 11 is a top view of the inner cover.

[0036] Figure 12 is a right view of the inner cover.

[0037] Figure 13 is taken along Figure 10 section line XIII-XIII shown.

[0038] Figure 14 is taken along Figure 10 section line XIV-XIV shown.

[0039] Figure 15 is a front view of the front plate.

[0040] Figure 16 is a top view of the front plate.

[0041] Figure 17 is a left view of the front plate.

[0042] Figure 18 It is the rear view of the front panel.

[0043] Figure 19 It is the left view of the upper left panel.

[0044] Figure 20 It is the top view of the upper left panel.

[0045] Figure 21 It is the front view of the upper left panel.

[0046] Figure 22 It is the left view of the lower left panel.

[0047] Figure 23 It is the rear view of the lower left panel.

[0048] Figure 24 It is the perspective view of the right panel and the bottom panel.

[0049] Figure 25 It is the front view of the right panel and the bottom panel.

[0050] Figure 26 It is the right view of the right panel and the bottom panel.

[0051] Figure 27 It is the top view of the right panel and the bottom panel.

[0052] Figure 28 It is the perspective view of the outer cover.

[0053] Figure 29 It is the front view of the outer cover.

[0054] Figure 30 It is the top view of the outer cover.

[0055] Figure 31 It is the rear view of the outer cover.

[0056] Figure 32 It is the left view of the outer cover.

[0057] Figure 33 It is the right view of the outer cover.

[0058] Figure 34 It is the partially enlarged top view showing the wiring arranged between the terminal block and the control device.

[0059] Figure 35 It is the partially enlarged perspective view illustrating the conveyance of the cutting tool between the second tool magazine and the first tool magazine.

[0060] Figure 36 It is the perspective view of the outer cover of the machine tool related to the modification example 1 with a partially modified structure.

[0061] Figure 37 It is the left view of the machine tool related to Modification Example 1.

[0062] Figure 38 It is the perspective view of the outer cover of the machine tool related to Modification Example 2 with a partially modified structure.

[0063] Figure 39 It is the left view of the machine tool related to Modification Example 2. Detailed implementation mode

[0064] Hereinafter, the present invention will be described based on the drawings showing the machine tool related to the embodiment. In the following description, the up-down, front-back, left-right directions shown in the drawings are used. Figure 1 It is a schematic perspective view of the machine tool with the processing chamber and the cover omitted, Figure 2 It is a schematic left view of the machine tool with the processing chamber and the cover omitted, Figure 3 It is a schematic top view of the machine tool with the processing chamber and the cover omitted.

[0065] The machine tool includes a base 1, a workpiece holding part 2, an XY moving mechanism 3, a column 4, a Z moving mechanism 5, a first tool magazine 6, two second tool magazines 7, 8, a spindle head 10, etc. The base 1 is rectangular in plan view and extends in the front-back direction. An XY moving mechanism 3 capable of moving in the left-right direction (X direction) and the front-back direction (Y direction) is provided on the upper front side of the base 1. A workpiece holding part 2 is provided on the upper side of the XY moving mechanism 3. Through the XY moving mechanism 3, the workpiece holding part 2 moves in the X and Y directions. The workpiece holding part 2 holds a workpiece.

[0066] A column 4 is provided on the upper rear side of the base 1 via a height adjustment part 4a. The column 4 is in the shape of a rectangular parallelepiped having a front surface, a rear surface, and left and right side surfaces. A control device 35 is provided on the rear surface of the column 4. The control device 35 controls the drive of the machine tool. A Z moving mechanism 5 capable of moving in the up-down direction (Z direction) is provided on the front surface of the column 4. A spindle head 10 is provided on the Z moving mechanism 5. The spindle head 10 includes a spindle 10a extending vertically. A tool is assembled at the lower end of the spindle 10a.

[0067] A first tool magazine 6 for storing a plurality of tools is provided on the front side of the spindle head 10. The first tool magazine 6 is connected to the column 4 via two first support parts 20, 25. One first support part 20 protrudes forward from the left front part of the column 4. The other first support part 25 protrudes forward from the right front part of the column 4. The first tool magazine 6 is connected to the protruding ends of the respective first support parts 20, 25. The first tool magazine 6 includes a disk 6a and an arm 6b. A motor (not shown) is connected to the disk 6a, and the disk 6a rotates around its central axis by the drive of the motor. A plurality of arms 6b are radially provided on the peripheral part of the disk 6a. Each arm 6b holds a tool.

[0068] The first tool magazine 6 is arranged such that the central axis of the disk 6a extends in a substantially front-rear direction and the disk 6a assumes a forward-tilted posture. The lower end position of the first tool magazine 6 is the tool change position. When assembling a tool to the main spindle, the arm 6b holding the tool is arranged at the tool change position, and the Z moving mechanism 5 is moved downward. Based on the downward movement of the Z moving mechanism 5, the main spindle 10a is assembled with the tool held by the arm 6b. When disassembling a tool from the main spindle 10a, the empty arm 6b is arranged at the tool change position, and the Z moving mechanism 5 is moved upward. Based on the upward movement of the Z moving mechanism 5, the arm 6b holds the tool of the main spindle 10a, and the tool falls off from the main spindle 10a.

[0069] The tool assembled to the main spindle 10a processes the workpiece held by the workpiece holding portion 2. A nozzle (not shown) for jetting cutting fluid is provided in the machining chamber 40. The nozzle jets cutting fluid onto the tool and the workpiece during machining. The cutting fluid adheres to the tool. The XY moving mechanism 3 adjusts the front-rear, left-right positions of the workpiece relative to the tool (main spindle), and the Z moving mechanism 5 adjusts the up-down position of the tool.

[0070] A second tool magazine 7 is arranged on the right side of the column 4, and a second tool magazine 8 is arranged on the left side of the column 4. The second support portion 30 connects the rear end portion of the left first support portion 20, that is, the connecting portion of the first support portion 20 to the column 4, and the second tool magazine 8. The second support portion 30 supports the second tool magazine 8. The second support portion 31 connects the rear end portion of the right first support portion 25, that is, the connecting portion of the first support portion 25 to the column 4, and the second tool magazine 7. The second support portion 31 supports the second tool magazine 7.

[0071] The second tool magazine 8 includes a disk-shaped wheel 8a and a plurality of arms 8b. The radially central portion of the wheel 8a protrudes in the axial direction. With the radially central portion as the vertex, the wheel 8a is generally in the shape of a truncated cone. A plurality of arms 8b are provided on the outer periphery of the wheel 8a. The plurality of arms 8b are arranged in the circumferential direction of the wheel 8a. Each arm 8b can hold a tool. The second tool magazine 8 houses a plurality of tools. The radially central portion on the concave side of the wheel 8a is connected to a motor 8c and a speed reducer (not shown). By the rotation of the motor 8c, the wheel 8a and the arms 8b rotate in the circumferential direction.

[0072] A conveying device 9 is arranged inside the wheel 8a. The conveying device 9 conveys tools. The conveying device 9 performs the handover of tools between the arm 6b of the first tool magazine 6 and the arm 8b of the second tool magazine 8. That is, the second tool magazine 8 is configured to be able to perform tool change with the first tool magazine 6. By providing the second tool magazine 8, the number and types of available tools can be increased compared with the case of only having the first tool magazine 6.

[0073] The second tool magazine 7 and the second tool magazine 8 are arranged symmetrically left and right, and their structures are the same as those of the second tool magazine 8, so their detailed descriptions are omitted. A conveying device is also provided inside the second tool magazine 7, and the conveying device transfers tools between the arm 6b of the first tool magazine 6 and the arm 8b of the second tool magazine 7.

[0074] Figure 4 is a schematic perspective view of the machine tool, Figure 5 is a schematic left view of the machine tool, Figure 6 is a schematic top view of the machine tool, Figure 7 is a schematic front view of the left rear wall 45, the right rear wall 43, the column 4, and each of the second tool magazines 7 and 8. The machine tool is provided with a machining chamber 40. The machining chamber 40 is provided on the base 1 and includes a front wall 41, a right wall 42, a right rear wall 43, a left wall 44, a left rear wall 45, a ceiling 46, and a protruding body 47.

[0075] The front wall 41 is in the shape of a rectangle in the front view. The left edge of the front wall 41 is located to the left of the second tool magazine 8 on the left side, and the right edge of the front wall 41 is located to the right of the second tool magazine 7 on the right side. The front wall 41 is located in front of the base 1. The upper edge of the front wall 41 faces the vicinity of the central part of the first tool magazine 6, and the vertical position of the lower edge of the front wall 41 is approximately the same as the position near the upper surface of the base 1. The lower edge of the front wall 41 and the front edge of the upper surface of the base 1 are connected by an inclined portion (not shown) that slopes downward as it goes to the rear side. A rectangular opening is formed in the central part of the front wall 41, and a door 41a is provided in the opening. An operation panel 41b is provided adjacent to the right side of the door 41a in the front wall 41.

[0076] The left wall 44 is in the shape of a rectangle in the left view. The left wall 44 is located to the left of the base 1. The vertical dimension of the left wall 44 is approximately the same as the vertical dimension of the front wall 41. The entire front edge of the left wall 44 is connected to the entire left edge of the front wall 41. The position of the rear edge of the left wall 44 in the front-rear direction is approximately the same as the position of the front part of the column 4. A rectangular opening is formed in the central part of the left wall 44, and a detachable left side surface 44a is provided in the opening. The left side surface 44a corresponds to the side surface. The lower edge of the left wall 44 and the left edge of the upper surface of the base 1 are connected by an inclined portion (not shown) that slopes downward as it goes to the right side.

[0077] As Figure 7 shown, the left rear wall 45 is U-shaped in the front view. The left rear wall 45 is provided on the left side of the column 4. The upper right end of the left rear wall 45 is located below the upper left end. The inner edge of the left rear wall 45 forms an opening 45a that is open upward. A groove 45b having an L-shaped cross section along the inner edge is formed on the rear surface of the left rear wall 45 (refer to Figure 13)。The vertical dimension of the left part of the left rear wall 45 is substantially the same as the vertical dimension of the left wall 44. The left edge of the left rear wall 45 is integrally connected to the rear edge of the left wall 44 as a whole. The right part of the left rear wall 45 is adjacent to the column 4. The lower edge of the left rear wall 45 is integrally adjacent to the upper surface of the base 1.

[0078] The right wall 42 is in the shape of a rectangle when viewed from the right. The right wall 42 is located on the right side of the base 1. The vertical dimension of the right wall 42 is substantially the same as the vertical dimension of the front wall 41. The front edge of the right wall 42 is integrally connected to the right edge of the front wall 41 as a whole. The position of the rear edge of the right wall 42 in the front-rear direction is substantially the same as the front part of the column 4. A rectangular opening is formed in the central part of the right wall 42, and a detachable right side face 42a is provided in the opening. The lower edge of the right wall 42 and the upper surface right edge of the base 1 are connected by an inclined part (not shown in the figure) that slopes downward as it goes to the left.

[0079] As Figure 7 shown, the right rear wall 43 is U-shaped when viewed from the front. The right rear wall 43 is provided on the right side of the column 4. The upper left end of the right rear wall 43 is located lower than the upper right end. The inner edge of the right rear wall 43 forms an opening 43a that is open upward. A groove 43b with an L-shaped cross-section along the inner edge is formed on the rear surface of the right rear wall 43. The vertical dimension of the right part of the right rear wall 43 is substantially the same as the vertical dimension of the right wall 42. The right edge of the right rear wall 43 is integrally connected to the rear edge of the right wall 42 as a whole. The left part of the right rear wall 43 is adjacent to the column 4. The lower edge of the right rear wall 43 is integrally adjacent to the upper surface of the base 1.

[0080] The ceiling 46 is in the shape of a horizontally long U when viewed from above. A concave part 46a is formed at the central part of the rear edge of the ceiling 46. The front edge of the ceiling 46 is integrally connected to the upper edge of the front wall 41 as a whole. A protruding body 47 is provided above the concave part 46a. The protruding body 47 includes a front plate 47a, an upper plate 47b, a right side panel 47c, and a left side panel 47d. The front plate 47a is in the shape of a horizontally long rectangle when viewed from the front, and the lower edge of the front plate 47a is integrally connected to the front edge of the concave part 46a as a whole. The upper plate 47b is in the shape of a horizontally long rectangle when viewed from above, and the front edge of the upper plate 47b is integrally connected to the upper edge of the front plate 47a as a whole.

[0081] The right side panel 47c is in the shape of a right-angled trapezoid when viewed from the right. The upper base of the right side panel 47c is shorter than the lower base, and in a right view, the upper base and the front edge are at a right angle, and the lower base and the front edge are at a right angle. The upper base of the right side panel 47c is integrally connected to the right edge of the upper plate 47b as a whole. The lower base of the right side panel 47c is integrally connected to the right edge of the concave part 46a as a whole. The front edge of the right side panel 47c is integrally connected to the right edge of the front plate 47a as a whole.

[0082] The left panel 47d is in the shape of a left-angled trapezoid when viewed from the left. The upper base of the left panel 47d is shorter than the lower base. When viewed from the left, the upper base and the front edge form a right angle, and the lower base and the front edge form a right angle. The entire upper base of the left panel 47d is integrally connected to the left edge of the upper plate 47b. The entire lower base of the left panel 47d is integrally connected to the left edge of the concave portion 46a. The entire front edge of the left panel 47d is integrally connected to the left edge of the front plate 47a. The rear side of the protruding body 47 is open.

[0083] The front wall 41, the right wall 42, the right rear wall 43, the left wall 44, the left rear wall 45, and the ceiling 46 surround the structures on the front side of the column 4, such as the workpiece holding portion 2, the XY moving mechanism 3, the Z moving mechanism 5, the first tool magazine 6, and the spindle head 10. The upper part of the first tool magazine 6 protrudes upward compared to the front wall 41, the right wall 42, the right rear wall 43, the left wall 44, the left rear wall 45, and the ceiling 46. The protruding body 47 covers the front side, the upper side, and the left and right sides of the upper part of the first tool magazine 6. That is, the machining chamber 40 houses the workpiece holding portion 2, the XY moving mechanism 3, the Z moving mechanism 5, the first tool magazine 6, the spindle head 10, and the first tool magazine 6.

[0084] As Figure 6 and Figure 7 shown, the second tool magazine 7 on the right side is disposed inside the opening 43a. The front part of the second tool magazine 7 is located on the front side of the opening 43a, that is, inside the machining chamber 40. The rear part of the second tool magazine 7 is located on the rear side of the opening 43a, that is, outside the machining chamber 40. The second tool magazine 8 on the left side is disposed inside the opening 45a. The front part of the second tool magazine 8 is located on the front side of the opening 45a, that is, inside the machining chamber 40. The rear part of the second tool magazine 8 is located on the rear side of the opening 45a, that is, outside the machining chamber 40.

[0085] The periphery of the second tool magazine 8 is covered by the cover 50. The cover 50 includes an inner cover 51 and an outer cover 57. Figure 8 is a perspective view of the inner cover 51, Figure 9 is a front view of the inner cover 51, Figure 10 is a rear view of the inner cover 51, Figure 11 is a top view of the inner cover 51, Figure 12 is a right view of the inner cover 51, Figure 13 is taken Figure 10 as a sectional view along the cutting line XIII-XIII shown, Figure 14 is taken Figure 10 as a sectional view along the cutting line XIV-XIV shown. It should be noted that, Figure 13 in addition to the inner cover 51, the left rear wall 45 and the outer cover 57 are also shown. The inner cover 51 includes a front plate 52, a right plate 53, an upper left plate 54, a lower left plate 55, a bottom plate 56, etc. The bottom plate 56 corresponds to the first bottom surface.

[0086] Figure 15is the front view of the front plate 52, Figure 16 is the top view of the front plate 52, Figure 17 is the left view of the front plate 52, Figure 18 is the rear view of the front plate 52. The front plate 52 is in the shape of a quadrilateral in the front view, with the inner angle at the upper right corner being approximately 90 degrees, the inner angle at the upper left corner being about 80 degrees, the inner angle at the lower left corner being about 110 degrees, and the inner angle at the lower right corner being about 80 degrees. A horizontally long rectangular opening 52e is formed in the central portion of the front plate 52. The opening 52e is inclined in a manner that rises as it goes to the right. A gate 52a that can move up and down and a drive unit 52b for driving the gate 52a are provided on the back surface of the front plate 52. By driving the drive unit 52b, the gate 52a moves up and down to open and close the opening 52e.

[0087] The connecting plate 52d is connected to the left edge portion of the front plate 52. The connecting plate 52d is in the shape of a rectangle extending vertically. The front plate 52, the upper left plate 54, and the lower left plate 55 are connected via the connecting plate 52d. A connecting portion 52c is provided at the left end of the upper edge portion of the front plate 52. The front plate 52 and the ceiling 46 are connected via the connecting portion 52c.

[0088] Figure 19 is the left view of the upper left plate 54, Figure 20 is the top view of the upper left plate 54, Figure 21 is the front view of the upper left plate 54. The upper left plate 54 has a plate portion 54a in the shape of a pentagon in the left view. The inner angle at the front upper corner of the plate portion 54a is about 80 degrees, the inner angle at the rear upper corner is about 140 degrees, the inner angle at the rear central portion is about 120 degrees, the inner angle at the rear lower corner is about 90 degrees, and the inner angle at the front lower corner is about 110 degrees. An upper plate portion 54b is provided at the upper edge portion of the upper left plate 54. The upper plate portion 54b is in the shape of a slender isosceles triangle in the top view with a vertex at the rear side. The front edge portion of the upper plate portion 54b is bent downward. Two insertion holes 54f for inserting bolts (not shown) are formed in the bent front edge portion. A belt upper portion 54d extending in the front-rear direction is provided at the lower edge portion of the upper left plate 54. A connecting portion 54c is provided at the lower end of the rear edge portion of the upper left plate 54. The connecting portion 54c has an internal thread that penetrates through in the front-rear direction.

[0089] Figure 22 is the left view of the lower left plate 55, Figure 23 is the rear view of the lower left plate 55. As Figure 22 shown, the lower left plate 55 is in the shape of a quadrilateral in the left view, with the inner angle at the front upper end being approximately 80 degrees, the inner angle at the front lower end being about 120 degrees, the inner angle at the rear lower end being about 80 degrees, and the inner angle at the rear upper end being about 80 degrees. The lower left plate 55 is configured to be detachable. The lower left plate 55 corresponds to the second side face. An operator can detach the left side face 44a and the lower left plate 55 for maintenance management of, for example, the second tool magazine 8 or the spindle head 10.

[0090] Figure 24 is a perspective view of the right plate 53 and the bottom plate 56, Figure 25 is a front view of the right plate 53 and the bottom plate 56, Figure 26 is a right view of the right plate 53 and the bottom plate 56, Figure 27 is a top view of the right plate 53 and the bottom plate 56. As Figure 26 shown, the right plate 53 is quadrilateral in a right view, the inner angle at the upper rear end is approximately 90 degrees, the inner angle at the upper front end is about 80 degrees, the inner angle at the lower front end is about 110 degrees, and the inner angle at the lower rear end is about 80 degrees. A concave portion 53f is formed at the center in the vertical direction of the rear edge portion of the right plate 53. The concave portion 53f is in a U shape with the front side as the bottom side. The upper edge and the lower edge of the concave portion 53f are substantially perpendicular to the front edge of the concave portion 53f. The front-rear dimension of the lower edge of the concave portion 53f is longer than the front-rear dimension of the upper edge. In the rear edge portion of the right plate 53, the portion below the concave portion 53f is located at the rear side compared with the portion above the concave portion 53f.

[0091] A connecting portion 53a is provided at the bottom of the concave portion 53f, that is, at the front edge of the concave portion 53f. A connecting portion 53e is formed in the portion of the rear edge portion of the right plate 53 below the concave portion 53f. The connecting portion 53e is in a vertically long rectangular shape and protrudes to the right side from the rear edge portion of the right plate 53. A connecting portion 53b is formed in the portion of the rear edge portion of the right plate 53 above the concave portion 53f. The connecting portion 53b is in a vertically long rectangular shape and protrudes to the right side from the rear edge portion of the right plate 53. The right plate 53 is connected to the first support portion 20 via the connecting portion 53a and the connecting portion 53b. The right plate 53 is connected to the left rear wall 45 via the connecting portion 53e.

[0092] A connecting portion 53g is formed over the entire front edge portion of the right plate 53. The connecting portion 53g is in a strip shape extending vertically and protrudes to the left side from the front edge portion of the right plate 53. The left-right dimension of the central portion in the vertical direction of the connecting portion 53g is shorter than other portions. The right plate 53 is connected to the front plate 52 via the connecting portion 53g. An upper plate 53c is formed at the upper edge portion of the right plate 53. The upper plate 53c is in a horizontally long rectangular shape and protrudes to the left side from the upper edge portion of the right plate 53. A mounting plate 53d is provided on the upper plate 53c.

[0093] As Figure 27 shown, the bottom plate 56 is quadrilateral in a top view, the inner angle at the right rear end is approximately 90 degrees, the inner angle at the left rear end is about 80 degrees, the inner angle at the left front end is about 80 degrees, and the inner angle at the right front end is about 110 degrees. The bottom plate 56 is inclined in such a way that it descends as it goes toward the rear side. A connecting portion 56a is formed at the rear edge portion of the bottom plate 56. The connecting portion 56a is in a horizontally long rectangular shape and protrudes downward from the rear edge portion of the bottom plate 56. The connecting portion 56a is located at the front side compared with the connecting portion 53e. As Figure 24 、 Figure 25 shown, a bolt 56g (refer toFigure 13 ) Two insertion holes 56h are inserted. The two insertion holes 56h are arranged left and right. The connecting portion 56a is connected to a connecting member described later (refer to Figure 13 ) and is connected to the outer cover 57.

[0094] A connecting portion 56b is formed at the front edge portion of the bottom panel 56. The connecting portion 56b is horizontally long and rectangular and protrudes upward from the front edge portion of the bottom panel 56. A connecting portion 56c is formed at the left edge portion of the bottom panel 56. The connecting portion 56c is rectangular with a front-back length and protrudes upward from the left edge portion of the bottom panel 56. The bottom surface portion 56 is connected to the front plate 52 via the connecting portion 56b, and the bottom surface portion 56 is connected to the lower left plate 55 via the connecting portion 56c. The lower edge portion of the right plate 53 and the right edge portion of the bottom panel 56 are integrally connected.

[0095] As described above, the connecting portion 56a is located at a position closer to the front side than the connecting portion 53e, and the connecting portion 53e is connected to the left rear wall 45. Therefore, as Figure 13 shown, a gap 49 is formed between the connecting portion 56a and the left rear wall 45. The gap 49 is formed over the entire left-right width of the connecting portion 56a.

[0096] Figure 28 is a perspective view of the outer cover 57, Figure 29 is a front view of the outer cover 57, Figure 30 is a top view of the outer cover 57, Figure 31 is a rear view of the outer cover 57, Figure 32 is a left view of the outer cover 57, Figure 33 is a right view of the outer cover 57. As Figure 30 shown, the outer cover 57 includes a bottom panel 64 that is pentagonal in a top view. The bottom panel 64 corresponds to the second bottom surface. The bottom panel 64 includes a front edge 64a, a first right edge 64b, a second right edge 64c, a rear edge 64d, and a left edge 64e.

[0097] The front side 64a extends horizontally. The first right side 64b extends rearward from the right end of the front side 64a substantially vertically. The length of the first right side 64b is about 1 / 4 of that of the front side 64a. The second right side 64c extends obliquely rearward to the left in such a way that the internal angle with respect to the first right side 64b is about 150 degrees. The length of the second right side 64c is about three times that of the first right side 64b. The rear side 64d extends horizontally and is substantially parallel to the front side 64a. The left end of the rear side 64d is located slightly to the left of the left end of the front side 64a. The length of the rear side 64d is slightly shorter than that of the front side 64a. The left side 64e connects the left end of the rear side 64d and the left end of the front side 64a. The internal angle between the left side 64e and the rear side 64d is slightly smaller than 90 degrees, and the internal angle between the left side 64e and the front side 64a is slightly larger than 90 degrees. That is, the left side 64e is inclined with respect to the front side 64a and the rear side 64d in such a way that it is more on the right side as it goes forward. The bottom plate 64 is inclined in such a way that it descends as it goes forward.

[0098] As Figure 32 shown, the outer cover 57 includes a left plate 59 having a left-view trapezoidal shape. The left plate 59 includes a front side 59b, an upper side 59c, a rear side 59d, and a lower side 59e. The left plate 59 has a trapezoidal shape with the front side 59b and the rear side 59d as the upper and lower bases and the upper side 59c and the lower side 59e as the waists. The vertical dimension of the front side 59b is longer than that of the rear side 59d. The upper side 59c is substantially perpendicular to the front side 59b and the rear side 59d. The lower side 59e is inclined in such a way that it descends as it goes forward. The rear end of the lower side 59e is located slightly to the left of the front end of the lower side 59e. The lower side 59e substantially coincides with the left side 64e of the bottom plate 64. That is, the lower side 59e and the left side 64e are integrally connected. The left plate 59 is inclined in such a way that it descends as it goes to the right, except for the upper end portion 59f. The upper end portion 59f is in the form of a strip extending horizontally and is arranged substantially vertically. A substantially quadrilateral transparent window 59a is provided at the central portion of the left plate 59. An operator can confirm the tools stored in the second tool magazine 8 through the window 59a.

[0099] As Figure 33 shown, the outer cover 57 includes a right plate 61 having a right-view trapezoidal shape. The right plate 61 includes a front side 61a, an upper side 61b, a rear side 61c, and a lower side 61d. The right plate 61 has a trapezoidal shape with the front side 61a and the rear side 61c as the upper and lower bases and the upper side 61b and the lower side 61d as the waists. The vertical dimension of the front side 61a is longer than that of the rear side 61c. The upper side 61b is substantially perpendicular to the front side 61a and the rear side 61c. The lower side 61d is inclined in such a way that it descends as it goes forward. The lower side 61d substantially coincides with the second right side 64c of the bottom plate 64. That is, the lower side 61d and the second right side 64c are integrally connected. The front side 61a is located behind the front side 59b of the left plate 59. As Figure 30As shown, the right plate 61 is inclined with respect to the rear side 64d such that it is more to the right as it goes forward to the front side.

[0100] As Figure 31 shown, the outer cover 57 includes a rear plate 60 that is trapezoidal in a rear view. The rear plate 60 includes a first left side 60a, a second left side 60b, an upper side 60c, a right side 60d, and a lower side 60e. The rear plate 60 is trapezoidal with the upper side 60c and the lower side 60e as the upper and lower bases and the first left side 60a, the second left side 60b, and the right side 60d as the waists. The left - right dimension of the upper side 60c is longer than the left - right dimension of the lower side 60e. The right side 60d is substantially perpendicular to the upper side 60c and the lower side 60e. The first left side 60a extends obliquely upward to the left from the lower side 60e to near the left end of the upper side 60c. The left - right position of the upper end of the first left side 60a is substantially the same as the left end of the upper side 60c. The second left side 60b connects the left end of the upper side 60c and the upper end of the first left side 60a. The second left side 60b is substantially perpendicular to the upper side 60c. The length of the second left side 60b is about 1 / 15 of the first left side 60a. That is, the rear plate 60 is a pentagon close to a trapezoid.

[0101] The lower side 60e substantially coincides with the rear side 64d of the bottom plate 64. That is, the lower side 60e and the rear side 64d are integrally connected. The second left side 60b substantially coincides with the rear side of the upper end portion 59f, and the first left side 60a substantially coincides with the rear side 59d of the left plate 59 except for the rear side of the upper end portion 59f. That is, the first left side 60a, the second left side 60b, and the rear side 59d are integrally connected. The right side 60d substantially coincides with the rear side 61c of the right plate 61. That is, the right side 60d and the rear side 61c are integrally connected.

[0102] As Figure 28 、 30 and 33 shown, the first protruding plate 62 protrudes to the right from the upper part of the front side 61a of the right plate 61. As Figure 29 shown, the first protruding plate 62 is rectangular with a long longitudinal shape in a front view. The protruding end of the first protruding plate 62 is bent backward. The second protruding plate 63 protrudes forward from the lower side of the first protruding plate 62. As Figure 30 shown, the second protruding plate 63 is square in a top view. The left front part of the second protruding plate 63 protrudes slightly forward more than the right front part.

[0103] As Figure 33As shown, the outer cover 57 has a connecting plate 65 in the shape of a right-view trapezoid. The connecting plate 65 has a front edge 65a, an upper edge 65b, a rear edge 65c, and a lower edge 65d. The connecting plate 65 is in the shape of a trapezoid with the front edge 65a and the rear edge 65c as the upper and lower bases and the upper edge 65b and the lower edge 65d as the waists. The vertical dimension of the front edge 65a is longer than the vertical dimension of the rear edge 65c. The upper edge 65b is substantially perpendicular to the front edge 65a and the rear edge 65c. The lower edge 65d is inclined in a manner that descends as it goes forward. The lower edge 65d substantially coincides with the first right side 64b of the bottom plate 64. That is, the lower edge 65d and the first right side 64b are integrally connected. The rear edge 65c substantially coincides with the front edge 61a of the right plate 61 below the first protruding plate 62. That is, the rear edge 65c and the front edge 61a of the right plate 61 below the first protruding plate 62 are integrally connected. The connecting plate 65 connects the second protruding plate 63 and the right plate 61.

[0104] As Figure 29 shown, the outer cover 57 has a front plate 58 in the shape of a front-view U. The front plate 58 has a first lower edge 58c, a first right side 58d, a first upper edge 58e, a second right side 58f, a second lower edge 58g, a second left side 58h, a second upper edge 58j, and a first left side 58k. The first lower edge 58c extends horizontally. The first right side 58d extends substantially vertically upward from the right end of the first lower edge 58c. The length of the first right side 58d is about 70% of the first lower edge 58c. The first upper edge 58e extends substantially vertically to the left from the upper end of the first right side 58d. The first upper edge 58e is substantially parallel to the first lower edge 58c. The length of the first upper edge 58e is about 10% of the first right side 58d. The second right side 58f extends substantially vertically downward from the left end of the first upper edge 58e. The length of the second right side 58f is about 40% of the first right side 58d.

[0105] The second lower edge 58g extends substantially vertically to the left from the lower end of the second right side 58f. The length of the second lower edge 58g is about 80% of the first right side 58d. The second left side 58h extends obliquely upward to the left from the left end of the second lower edge 58g. The length of the second left side 58h is about 1.2 times that of the first right side 58d. The second upper edge 58j extends to the left from the left end of the second left side 58h. The second upper edge 58j is substantially parallel to the first lower edge 58c. The length of the second upper edge 58j is of the same degree as the first upper edge 58e. The first left side 58k connects the left end of the second upper edge 58j and the left end of the first lower edge 58c. The first left side 58k is substantially perpendicular to the second upper edge 58j and the first lower edge 58c.

[0106] The first upper edge 58e is integrally connected to the left front part of the second protruding plate 63. The second right side 58f is integrally connected to the front edge 65a of the connecting plate 65. As Figure 29As shown, the second lower edge 58g is integrally connected to the front edge 64a of the bottom panel 64 except for the left end portion. The second left edge 58h is located slightly to the right of the left plate 59. The left end of the second upper edge 58j is integrally connected to the lower end of the front edge of the upper end portion 59f.

[0107] As Figure 29 shown, in the front plate 58, the portion between the first lower edge 58c and the second lower edge 58g extends downward from the front edge 64a of the bottom panel 64, and the portion between the first right edge 58d and the second right edge 58f extends to the right of the connecting plate 65. The portion between the second left edge 58h and the first left edge 58k extends to the right and left of the left plate 59. That is, the left plate 59 is disposed between the second left edge 58h and the first left edge 58k.

[0108] As Figure 28 and 29 shown, two connecting members 58a are provided at the lower portion of the front plate 58. The connecting member 58a has a U-shaped top view with the front side as the bottom side, and both ends of the rear side are fixed to the front plate 58. That is, the connecting member 58a penetrates vertically. A female thread that penetrates through the front and back is formed at the front portion of the connecting member 58a. One connecting member 58a is disposed substantially directly below the right end of the second lower edge 58g. The other connecting member 58a is disposed below the left portion of the second lower edge 58g. The two connecting members 58a are arranged left and right. A plurality of insertion holes 58b for inserting bolts are formed along the outer periphery of the front plate 58. In addition, a second insertion hole 58m for inserting bolts is formed at the upper left portion of the front plate 58. The front plate 58, particularly the portion of the front plate 58 below the second lower edge 58g, corresponds to the mounting portion.

[0109] A method for mounting the outer cover 57 to the left rear wall 45 will be described. As Figure 7 and Figure 13 shown, in the back surface of the left rear wall 45, a groove 45b is formed along the edge of the U-shaped opening 45a. That is, the groove 45b has a U shape. The U shape of the groove 45b corresponds to the U shape formed by the first lower edge 58c, the first right edge 58d, the first upper edge 58e, and the first left edge 58k of the front plate 58. A sealing member 70 is provided along the groove 45b. The outer cover 57 is disposed such that the outer peripheral portion of the front plate 58, that is, the portion along the first lower edge 58c, the first right edge 58d, the first upper edge 58e, and the first left edge 58k, faces the groove 45b with the sealing member 70 interposed therebetween, and the two connecting members 58a are located inside the opening 45a. Bolts (not shown) are inserted into the respective insertion holes 58b from the rear side. Female threaded holes (not shown) are provided at positions corresponding to the respective insertion holes 58b in the groove 45b. The bolts are connected to the female threaded holes to fix the front plate 58 to the left rear wall 45.

[0110] A method for mounting the inner cover 51 will be described. AsFigure 13 As shown, the inner cover 51 is disposed on the front side of the left rear wall 45 such that the front plate 52 faces the opening 45a and the two insertion holes 56h face the two connecting members 58a. Bolts 56g are inserted into the respective insertion holes 56h from the front side and connected to the female threads of the respective connecting members 58a, and the lower edge portion of the inner cover 51 is fixed to the lower portion of the outer cover 57. Further, bolts are inserted into the second insertion holes 58m of the outer cover 57 from the rear side and connected to the female threads of the connecting portion 54c of the inner cover 51. Further, as described above, the inner cover 51 is connected to the left rear wall 45 via the connecting portion 53e and is connected to the first support portion 20 via the connecting portions 53a and 53b. As Figure 13 shown, a gap 49 is formed between the connecting portion 56a and the left rear wall 45.

[0111] The recess 53f, the first protruding plate 62, and the second protruding plate 63 face each other in the front-rear direction, and the second support portion 30 is inserted into the space surrounded by the recess 53f, the first protruding plate 62, and the second protruding plate 63.

[0112] As Figure 4 and 5 shown, the cover 50 includes an upper cover 66. The upper cover 66 is provided on the inner cover 51 and the outer cover 57 so as to surround the front edge portion, the left edge portion, the upper end portion 59f of the upper plate portion 54b, the upper edge 60c of the rear plate 60, and the upper edge 61b of the right plate 61. A connecting plate 66c is provided at the lower edge of the front plate of the upper cover 66. The connecting plate 66c is connected to the ceiling 46.

[0113] As Figure 4 shown, a plurality of first female threaded holes 66a arranged left and right and a plurality of second female threaded holes 66b arranged left and right are provided on the front plate of the upper cover 66. The first female threaded holes 66a are located above the second female threaded holes 66b. It should be noted that in Figure 4 , one of the first female threaded holes 66a and one of the second female threaded holes 66b are shown respectively. Bolts are inserted into the two insertion holes 54f of the inner cover 51 from the rear side and connected to the two second female threaded holes 66a.

[0114] Figure 34It is a partially enlarged top view showing the wiring 69 disposed between the terminal block 67 and the control device 35. The terminal block 67 is provided at the left front part of the ceiling 46. The cover 50 includes a ceiling cover 68. The ceiling cover 68 is provided above the inner cover 51 and the outer cover 57. The ceiling cover 68 is provided around the second tool magazine 8 in the front, rear, left, and right directions. The wiring 69 is disposed between the terminal block 67 and the control device 35. The wiring 69 is arranged on the ceiling cover 68 so as to pass through the front side and the right side of the second tool magazine 8. The second tool magazine 8 houses tools with the tool tips facing the opposite side of the column 4, that is, the left side. The wiring 69 is disposed on the right side of the second tool magazine 8, that is, between the column 4 and the second tool magazine 8. That is, the wiring 69 is disposed on the opposite side of the tool tip. Therefore, contact between the wiring 69 and the tool tip can be prevented.

[0115] Figure 35 It is a partially enlarged perspective view illustrating the transfer of tools between the second tool magazine 8 and the first tool magazine 6. As Figure 35 shown, by the drive unit 52b, the shutter 52a moves to open the opening 52e. Using the transfer device 9, the tools stored in the second tool magazine 8 are transferred through the opening 52e to the first tool magazine 6, or the tools stored in the first tool magazine 6 are transferred through the opening 52e to the second tool magazine 8.

[0116] For example, when the shutter 52a is opened and tools are transferred, sometimes the cutting fluid adhering to the tools during machining may enter the cover 50. As Figure 13 shown by the arrow 71, the cutting fluid that has reached the bottom plate 56 of the cover 50 from the tool moves toward the left rear wall 45 and flows out of the cover 50 through the gap 49. In addition, as Figure 13 shown by the arrow 72, the cutting fluid that has reached the bottom plate 64 of the cover 50 from the tool moves toward the left rear wall 45 and flows out of the cover 50 through the gap 49. Since the sealing member 70 is provided between the outer cover 57 and the left rear wall 45, leakage of cutting fluid from between the outer cover 57 and the left rear wall 45 is suppressed.

[0117] The periphery of the second tool magazine 7 is also covered by the cover 80. However, except for left - right symmetry, the cover 80 has the same structure as the cover 50, so its detailed description is omitted.

[0118] (Modification Example 1)

[0119] Figure 36 It is a perspective view of the outer cover 57A of the machine tool related to Modification Example 1 with a partially changed structure, Figure 37 It is a left view of the machine tool related to Modification Example 1. The structure of the outer cover 57A in Modification Example 1 is partially different from that of the above - mentioned outer cover 57, but the inner cover 51 is the same as the above - mentioned inner cover 51. As Figure 37As shown, in Modification Example 1, the vertical dimension of the height adjustment portion 4a1 is short. That is, the second tool magazine 8 related to Modification Example 1 is located lower than the above-described embodiment. Accordingly, the upper left plate 54 is located lower than the above-described embodiment. That is, bolts are inserted into the two insertion holes 54f of the inner cover 51 from the rear side and connected to the two second female threaded holes 66b of the upper cover 66 that are lower than the first female threaded hole 66a. That is, the upper cover 66 can be provided at a position corresponding to the vertical position of the second tool magazine 8.

[0120] As Figure 36 shown, compared with the outer cover 57, the lower part of the front plate 58A of the outer cover 57A related to Modification Example 1 is short. A connecting member 58a identical to the above-described connecting member 58a is provided on the front plate 58A. The front plate 58A, particularly the portion of the front plate 58A lower than the second lower edge, corresponds to the mounting portion.

[0121] (Modification Example 2)

[0122] Figure 38 is a perspective view of the outer cover 57B of the machine tool related to Modification Example 2 in which the structure is partially changed, Figure 39 and is a left view of the machine tool related to Modification Example 2. The structure of the outer cover 57B in Modification Example 2 is partially different from the above-described outer covers 57 and 57A, but the inner cover 51 is the same as the above-described inner cover 51. As Figure 38 shown, in Modification Example 2, the vertical dimension of the height adjustment portion 4a2 is shorter than that of the height adjustment portion 4a1. That is, the second tool magazines 7 and 8 related to Modification Example 2 are located lower than Modification Example 1. In Modification Example 2, the upper cover 66 is not installed.

[0123] As Figure 39 shown, compared with the outer cover 57A, the lower part of the front plate 58B of the outer cover 57B related to Modification Example 2 is short. In Modification Example 2, the connecting member 58a is deleted. The inner cover 51 is fixed to the left rear wall 45 and the second support portion 30 in such a manner that a gap 49 is formed between the inner cover 51 and the left rear wall 45 even when the connecting member 58a is deleted. The front plate 58B, particularly the portion of the front plate 58B lower than the second lower edge, corresponds to the mounting portion.

[0124] In the above-described machine tool, the cutting fluid that has entered the cover 50 moves from the bottom plates 56 and 64 of the cover 50 toward the machining chamber 40, and thus it is easy for the cutting fluid to return to the machining chamber 40. The cutting fluid on the bottom plate 56 moves toward the machining chamber 40, the cutting fluid on the bottom plate 64 moves toward the machining chamber 40, and moves toward the machining chamber 40 through the gap 49.

[0125] In addition, an upper cover 66 can be provided at a position corresponding to the vertical position of the second tool magazine 8. In addition, the tools stored in the second tool magazine 8 can be confirmed through the window 59a. In addition, an outer cover 57 having a mounting portion corresponding to the vertical position of the second tool magazine 8 can be used. In addition, the wiring 69 can be arranged on the side opposite to the tip of the tool. In addition, the left side face 44a and the lower left plate 55 can be removed for maintenance management of the machine tool.

[0126] It should be considered that the embodiments disclosed herein are illustrative and not restrictive in all aspects. The scope of the present invention is intended to include all modifications within the claims and the scope equivalent to the claims. The matters described in each embodiment can be combined with each other. In addition, the independent claims and the dependent claims described in the claims can be combined with each other in all combinations regardless of the citation form. Moreover, in the claims, a claim form (multiple claim form) that describes a claim citing two or more other claims is used, but it is not limited thereto. It may also be described in a form of a multiple claim (multiple claim citing multiple claims) that describes a claim citing at least one multiple claim.

Claims

1. A machine tool comprising a tool magazine for storing tools, a holding portion for holding a workpiece, and a processing chamber surrounding the holding portion and for processing by the tools, wherein: An opening is formed in a wall of the processing chamber, The tool magazine is arranged inside and outside the processing room through the opening. The machine tool includes a cover that covers the tool magazine and has a bottom surface that is inclined downward toward the wall.

2. The machine tool according to claim 1, The bottom surface of the cover includes a first bottom surface that is located inside the processing chamber and is inclined downward toward the wall.

3. The machine tool according to claim 2, A gap is formed between the first bottom surface and the wall.

4. The machine tool according to any one of claims 1 to 3, The bottom surface of the cover includes a second bottom surface located outside the processing chamber and inclined downward toward the wall.

5. The machine tool according to any one of claims 1 to 3, The cover includes an upper cover covering the upper side of the tool magazine and mounted on the wall, and an inner cover located inside the processing chamber. The upper cover is configured to be able to change a mounting position in a vertical direction relative to the inner cover.

6. The machine tool according to any one of claims 1 to 3, The cover includes an outer cover located outside the processing chamber and mounted on the wall, The outer cover is provided with a window through which the inside of the cover can be visually checked.

7. The machine tool according to claim 6, The upper and lower positions of the tool magazine are selected from a plurality of upper and lower positions. The outer cover includes a mounting portion having a size corresponding to the selected vertical position of the tool magazine and mounted on the wall.

8. The machine tool according to any one of claims 1 to 3, The machine tool is provided with a column supporting the tool magazine and the control panel, The processing chamber is arranged on the first surface side of the column, The control panel is arranged on a second surface side of the column which is located on the opposite side of the first surface. The tool magazine is arranged on a third surface side of the column intersecting the first surface and the second surface. The tool magazine stores the tool so that the tool tip faces the opposite side of the column. Wiring for connecting the interior of the processing chamber and the control panel is arranged between the tool magazine and the column on the upper side of the cover.

9. The machine tool according to any one of claims 1 to 3, The processing chamber has a detachable side portion intersecting the wall, The cover includes a detachable second side surface portion that faces the side surface portion.

Images