CN-122029000-A - Machining center

Abstract

An object of the present invention is to provide a machining center in which an LED display means for displaying the operation state of a machine tool in more detail is provided in a state that is easily visually confirmed over a wide range from the outside of the machining center as compared with the related art, wherein the machining center is provided with an LED (light emitting diode) display means provided with a light emitting portion provided in at least a part of a front region above an outer cover surrounding the periphery of the machine tool, the light emitting portion is provided with a slit hole penetrating in a horizontal direction in a long shape in the outer cover, and an LED strip fixing plate mounted so as to block the slit hole over the entire length from the inside, and holds an RGB-LED strip over the entire length thereof, wherein a lower end surface of an opening upper side edge of the slit hole forms a first reflecting surface for reflecting LED light downward, and wherein an inclined surface of the LED strip fixing plate forms a second reflecting surface for diffusely reflecting LED light downward forward.

Inventors

• Beicun Changhao
• Farming in Beicun
• TANADA Toshihisa

Assignees

• 北村机械株式会社

Dates

Publication Date

20260512

Application Date

20250512

Priority Date

20240910

Claims (4)

1. 1. A machining center provided with a Computer Numerical Control (CNC) device for numerically controlling a machine tool, characterized in that, The machining center is provided with an LED (light emitting diode) display mechanism, wherein the LED display mechanism is provided with a light emitting part at least in a part of a front surface area of a front surface cover part which surrounds the front surface area of the machine tool in a substantially コ shape above an outer cover which surrounds the periphery of the machine tool, In the LED display mechanism, a slit hole, an LED strip fixing plate and an RGB-LED strip are provided as the light-emitting part, The slit hole is penetrated into a strip shape along the horizontal direction in the outer cover, The LED tape fixing plate is mounted so as to close the slit hole over the entire length from the inside of the outer cover, The RGB-LED lamp strip is held over the entire length of the LED strip fixing plate, a plurality of chip light emitting diodes embedded with red LEDs, green LEDs and blue LEDs are mounted in a row at a prescribed interval, The LED display mechanism comprises an LED power supply wiring for supplying power to the RGB-LED lamp strip, and a light color control part for making the RGB-LED lamp strip emit light with a plurality of different light colors preset according to various operation conditions of the machine tool, The LED strip fixing plate is provided with a horizontal bottom surface and an inclined surface, the horizontal bottom surface is used for pasting the RGB-LED strip on the back surface of the LED strip, the inclined surface extends forwards from the rear end side of the horizontal bottom surface in the inner side direction of the outer cover and extends above the RGB-LED strip at a position above the upper side edge of the opening of the slit hole, The lower end surface of the opening upper side edge of the slit hole forms a horizontal and smooth first reflecting surface that reflects light from the RGB-LED strip downward, and the inclined surface forms a smooth second reflecting surface that diffusely reflects light from the RGB-LED strip forward and downward.
2. 2. The machining center according to claim 1, wherein, The light-emitting part is arranged at least at one corner of the right and left of the front cover part, The slit hole is formed continuously across two side surfaces orthogonal to each other at the corner in an L-shape along the horizontal direction, The LED tape fixing plate is mounted in a substantially L-shape so as to block the slit hole over the entire length, The RGB-LED lamp strip is maintained in an L shape throughout the entire length of the LED strip fixing plate.
3. 3. A machining center according to claim 1 or 2, wherein, The control unit of the CNC device is provided with a light color control signal generation unit for outputting light color control signals for respectively indicating to the light color control unit respective light emissions of different light colors preset corresponding to respective operation conditions of the machine tool, The light color control unit is connected between the RGB-LED lamp strip and the LED power supply wiring, and changes light color by using the combined light emission of LEDs different from each other by turning on/off power supply to the red LED, the green LED, and the blue LED according to the inputted light color control signal.
4. 4. The machining center according to claim 3, wherein, The light color control signals include a first light color control signal that indicates adjustment of a light color that indicates an energized state in a non-machining operation of the machine tool, a second light color control signal that indicates adjustment of a light color that indicates a machining operation state of the machine tool, a third light color control signal that indicates adjustment of a light color that indicates a machining operation completion state of the machine tool, and a fourth light color control signal that indicates adjustment of a warning light color that indicates an alert generation state in the machine tool.

Description

Machining center Technical Field The present invention relates to a machining center in which an LED display means for indicating the operation state of a machine tool is provided in at least a front region of an outer cover of the machine tool. Background In a machine tool, a workpiece mounted on a machining table is machined by driving and controlling a rotating spindle to which various tools are replaceably attached in a machining section, but chips and cutting fluid are strongly scattered around in this machining step. In general, as a splash guard for preventing such chips and cutting fluid from scattering outside the machining area, an outer cover formed by sheet metal working is provided so as to surround at least the machining area. The outer cover also functions as a safety cover for avoiding danger of approaching or touching the working part during operation. In addition, a machining center may be configured to rotate a workpiece placed on one end side and convey the workpiece to a machining table on the other end side. In this case, an inspection opening/closing door is provided in a front region of the outer cover facing the swivel table, and is used for placing and removing a workpiece on and from the swivel table. On the other hand, as a machine tool in recent years, a machine tool of a form of a machining center is widely used, which is provided with a tool magazine housing various tools and an automatic tool changer for changing tools between the tool magazine and a rotating spindle of a machining section, and which is driven and controlled by a computer numerical controller, so-called CNC (Computerized Numerical Control, computer numerical control) device. In such a machining center, an operation panel of a CNC device is provided in one side surface region of the outer cover, and the CNC device executes automatic operation of the machine tool according to a predetermined NC machining program. That is, a predetermined cutting process is performed while automatically changing a predetermined tool at a predetermined timing with respect to a rotating spindle of a processing unit. Thus, various NC machining programs form various types of products during automatic operation of the machine tool. Such a machining center is generally a product in which not only a machining area including a machining portion but also a front area including a rotary table for conveying a workpiece to the machining portion, and an entire structure including an automatic tool changer, a tool magazine, and the like, which cooperate with the machining portion, are surrounded by an outer cover and are integrally formed. In addition, there have long been devices provided with a large-sized rotary warning lamp of red color that is turned on at a time when an abnormality occurs due to a certain failure. However, in a machining center that performs normal automatic operation, the machining center may be surrounded by a cover over the entire circumference, and it is difficult to grasp the operation state by visual observation from the outside. Therefore, it is desirable to provide a display means in the machining center that enables the operation state of a specific machine tool, for example, in normal operation, in preparation for operation, or in a state in which operation is completed, to be easily determined from the outside when a non-abnormality occurs. Therefore, a machining center has been developed in which an LED display mechanism including a plurality of types of LED light emitting diodes that emit light in different colors is provided in a front region of an outer cover (protector), and the LEDs of the respective colors are caused to emit light according to the operation conditions (see patent documents 1 and 2, for example) Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 3178520 Patent document 2 Japanese patent application laid-open No. 3179056 Patent document 3 Japanese patent application laid-open No. 2019-219784 Problems to be solved by the invention However, the LED display mechanism has a semi-cylindrical shape, protrudes from the surface of the protector, and is provided on the side that does not interfere with opening and closing of the sliding door, and therefore emits light only at one place and only substantially forward. Therefore, in this LED display mechanism, the range of angles that can be visually confirmed from the outside is limited, and the area that cannot be seen in the entire outer periphery with respect to the machining center is large. Patent document 3 discloses a device in which a full-color LED is provided on the top of a housing having a machining area of a machine tool therein, as an operation state notification device. However, in this illumination, the light emission direction is only upward, and if the top is relatively low, visual confirmation is not possible, but if the illumination position is at a height of a certain level or mo