Search

EP-4151361-B1 - MAGAZINE AND MACHINE TOOL

EP4151361B1EP 4151361 B1EP4151361 B1EP 4151361B1EP-4151361-B1

Inventors

  • MURATA, MASAKI

Dates

Publication Date
20260506
Application Date
20200605

Claims (13)

  1. A magazine comprising: a conveyer unit (36) that has a plurality of tool holders (32) that each can hold a tool detachably and can convey the plurality of tool holders (32) to a predetermined position (J); a cover body (41) that accommodates the conveyer unit (36), the conveyer unit (36) allowing a tool to be manually attached to and detached from the tool holder (32) conveyed to the predetermined position (J); and a display unit (51) that is provided inside the cover body (41) and is configured to display a first design (72), the first design (72) representing an arc or circumference for a diameter corresponding to a maximum diameter of a tool which can be held by the tool holder (32).
  2. The magazine according to claim 1, wherein the tool holder (32) conveyed to the predetermined position (J) can receive or can have a tool removed therefrom along a predetermined center axis (122), and the display unit (51) has a display surface (54) that is composed of a plane orthogonal to an axial direction of the predetermined center axis (122) and can display the first design (72).
  3. The magazine according to claim 2, wherein the display unit (51) is provided sideways of the predetermined position (J), and the arc or the circumference has a center point (131) aligned in level to the predetermined center axis (122).
  4. The magazine according to any one of claims 1 to 3, wherein the display unit (51) is further configured to display the maximum diameter of the tool which can be held by the tool holder (32).
  5. The magazine according to any one of claims 1 to 4, wherein the cover body (41) is provided with an opening (42) that allows a tool to be manually attached/detached to/from the tool holder (32) conveyed to the predetermined position (J), and the display unit (51) has at least a portion opposite to an opening plane defined by the opening (42) in the cover body (41).
  6. The magazine according to any one of claims 1 to 5, wherein the display unit (51) is further configured to display a first information in a variable display form about the tool held by the tool holder (32) and/or the conveyer unit (36).
  7. The magazine according to claim 6, wherein the first information includes at least one of: whether a tool is present or absent in the tool holder (32) conveyed to the predetermined position (J); how a tool is clamped in the tool holder (32) conveyed to the predetermined position (J); and in what state the conveyer unit (36) is operated to convey the tool holder (32).
  8. The magazine according to claim 6 or 7, wherein the display unit (51) includes: a plate material (52) including a light transmitting portion (56); and a light emitting device (53) that emits light from a back side of the plate material (52) toward the light transmitting portion (56) in a plurality of light emitting modes.
  9. The magazine according to claim 8, wherein the plurality of light emitting modes include a light emitting mode in a specific light emitting state selected from turning on light, turning off light, and flashing.
  10. The magazine according to claim 8 or 9, wherein the plurality of light emitting modes include a light emitting mode of a specific light emitting color selected from a plurality of colors.
  11. The magazine according to any one of claims 8 to 10, wherein the plate material (52) further configured to display a second information including at least one of: an indicator indicating the predetermined position (J); a specification of a shank of a tool held by the tool holder (32); and an orientation of the tool held by the tool holder (32) that is about an axis of rotation of the tool.
  12. The magazine according to claim 11, wherein at least one of: the indicator indicating the predetermined position (J); the specification of the shank of the tool held by the tool holder (32); and the orientation of the tool held by the tool holder (32) that is about the axis of rotation of the tool is represented by a second design (61), and the light transmitting portion (56) corresponds to the second design (61).
  13. A machine tool comprising a magazine according to any one of claims 1 to 12.

Description

TECHNICAL FIELD The present invention relates to a magazine and a machine tool. BACKGROUND ART For example, Japanese Patent Application Laying-Open No. 2019-42878 (PTL 1) discloses a tool magazine comprising a first conveyer unit and a second conveyer unit that hold a plurality of tools such as drills, end mills, milling cutters, etc. detachably and convey the tools along an endless path, and a cover body that accommodates the first and second conveyer units. The cover body is provided with a first opening and a second opening for manually attaching and detaching a tool to and from the first conveyer unit and the second conveyer unit, respectively. In addition, International Patent Publication No. WO 2020/012547 A1 (PTL 2) provides a numerical control device that displays tool data necessary for replacement. CITATION LIST PATENT LITERATURE PTL 1: Japanese Patent Laying-Open No. 2019-42878PTL 2: International Patent Publication No. WO 2020/012547 A1 SUMMARY OF INVENTION TECHNICAL PROBLEM As disclosed in PTL 1, in a magazine mounted in a machine tool, when a type of tool used to process a workpiece is changed or a tool has reached its end of life, a tool stored in the magazine may be replaced manually. In that case, it is required that a manual tool attachment/detachment operation be performed easily and appropriately. Accordingly, it is an object of the present invention to solve the above problem, and provide a magazine that allows a manual tool attachment/detachment operation to be easily and appropriately performed, and a machine tool comprising such a magazine. SOLUTION TO PROBLEM The present invention is set out by the appended claims. A magazine according to the present invention comprises: a conveyer unit that has a plurality of tool holders that each hold a tool detachably and conveys the plurality of tool holders; and a cover body that accommodates the conveyer unit. The conveyer unit allows a tool to be manually attached to and detached from a tool holder conveyed to a predetermined position. The magazine further comprises a display unit that is provided inside the cover body and displays a first design. The first design represents an arc or circumference for a diameter corresponding to a maximum diameter of a tool which can be held by the tool holder. According to the thus configured magazine, when an operator manually attaches a tool to a tool holder, the operator can intuitively recognize a maximum diameter of a tool which can be held by the tool holder by confirming an arc or circumference represented by the first design that the display unit displays. A manual tool attachment/detachment operation can thus be performed easily and appropriately. Preferably, the tool holder conveyed to the predetermined position receives or has a tool removed therefrom along a predetermined center axis. The display unit has a display surface that is composed of a plane orthogonal to an axial direction of the predetermined center axis and displays the first design. According to the thus configured magazine, when the operator performs an operation to attach/detach a tool at a position opposite to a tool holder in the axial direction of the predetermined center axis, the operator more easily confirms the arc or circumference represented by the first design displayed on the display surface. Preferably, the display unit is provided sideways of the predetermined position. The arc or circumference has a center point aligned in level to the predetermined center axis. According to the thus configured magazine, when the operator manually attaches a tool to a tool holder, the operator can easily compare the tool in size with the arc or circumference represented by the first design that the display unit displays. Preferably, the display unit further displays a maximum diameter of a tool which can be held by the tool holder. According to the thus configured magazine, the operator can accurately recognize the maximum diameter of the tool that can be held by the tool holder. Preferably, the cover body is provided with an opening that allows a tool to be manually attached/detached to/from the tool holder conveyed to the predetermined position. The display unit has at least a portion opposite to an opening plane defined by the opening in the cover body. According to the thus configured magazine, the operator can easily confirm through the opening plane defined by the opening in the cover body the arc or circumference represented by the first design that the display unit displays. Preferably, the display unit further displays first information in a variable display form about a tool held by a tool holder and/or the conveyer unit. According to the thus configured magazine, when the operator manually attaches/detaches a tool to/from a tool holder, the operator can recognize the first information about the tool held by the tool holder and/or the conveyer unit by confirming a display form at the display unit. Thus, the manual tool att