JP5464467B2 - Chip collection structure for machine tool cover - Google Patents

Description

  The present invention relates to a chip collection structure for a machine tool cover of a machine tool capable of collecting chips on an upper surface of a ceiling plate of a machine cover provided with an opening that can be opened and closed by a door.

  A problem with machine tools having a gantry loader at the top is that chips fall from the traveling gantry loader and accumulate on the ceiling of the machine body cover. As a conventional chip collection structure for machine tool covers of machine tools, a structure described in Patent Document 1 is known. In this machine tool, the upper part of the bed is covered with a machine body cover, and a gantry loader is installed above the machine tool. The airframe cover includes a ceiling lid and a movable dividing plate that cover the top. The ceiling lid is a lid that covers the ceiling portion by sliding in an openable and closable manner in the horizontal direction by an opening and closing cylinder. The movable dividing plate is a lid that rotates the ceiling part and covers it in a freely openable and closable manner. The movable dividing plates are arranged in a freely rotatable manner, and their one side is pivotally attached to a common link. Is forming. The traveling gantry loader hits a link lever provided in the parallel link mechanism, and each movable dividing plate that has laid down in a substantially horizontal closed posture so far rises to a vertical posture, so that the ceiling portion is opened. As a result, the chips that have fallen and accumulated on the movable dividing plate until then fall down from the gap between the movable dividing plates and are removed from the ceiling. Thereafter, when the gantry loader traveling again hits the link lever, the movable dividing plate returns to a substantially horizontal closed position.

  In the structure described in Patent Document 2, a slide type shutter that opens and closes a loader doorway is installed on a ceiling surface of a machine body cover that covers a machine tool. A chute opening for dropping chips and coolant to the cutting area is provided on the ceiling surface, and a discharge guide piece is provided obliquely downward at the opening edge. A front door that opens and closes the front opening is supported on the front surface of the airframe cover by a guide rail via a door guide that extends from the upper end of the airframe cover to the rear upper part of the airframe cover, and is installed so as to freely advance and retract. The door guide is provided with a brush that comes into sliding contact with the ceiling surface of the fuselage cover, and with the opening operation of the front door, chips that accumulate on the ceiling surface of the fuselage cover are discharged to the chute opening by the brush. .

JP-A-4-310346 Japanese Utility Model Publication No. 7-7836

  In the one described in Patent Document 1, the chips are not entangled around the movable part such as the movable dividing plate and the link, and the movable dividing plate may be defective in opening / closing operation or failure due to the tangled chips, and the structure There is a problem that is complicated and expensive. In addition, the machine body cover must be closed during workpiece machining, and the gantry loader must be controlled so that the gantry loader travels above the link lever in the direction to open the movable dividing plate so that it is when machining is stopped. There is a problem that the cycle time becomes longer due to the restriction of the travel of the loader.

  In the thing of patent document 2, since a chip | tip is discharged | emitted to a chute opening with the brush of a front door, it is preferable, without affecting the cycle time of a gantry loader, but there exists a problem which a chip | tip adheres and accumulates on a brush. In addition, since the front door has a brush, when loading and unloading the workpiece with the loader, chips on the top surface of the ceiling plate are not discharged, and a large amount of chips accumulates until the front door is opened. When only the sliding shutter is opened to discharge and carry in the workpiece with the powder accumulated, the shutter may cause a malfunction of the opening / closing operation. In addition, since a door guide is provided from the upper end of the front door to the rear upper part of the body cover and a brush is provided on the door guide, the structure is complicated.

  Therefore, in view of the above problems, the present invention has a simple structure in which there is no risk of an opening / closing operation failure or failure due to chips, the travel of the gantry loader is not limited, and the cycle time is not affected. It aims at providing the door apparatus provided with the chip collection structure of the machine tool which can collect a chip from a section.

In order to achieve the above object, the first problem solving means arranges a machine body cover that covers the entire machine including the machining area on the bed, and the conveyance unit of the conveyance means that moves above the machine cover faces the machining area. an openable door for its opening and out opening sections provided on the ceiling plate of the machine body cover, the chips that have fallen on the top surface of the top plate of the machine body cover in the processing area of the machine body covered by the movement of the transport unit Te In the chip collection structure of the machine tool cover of the recoverable machine tool, a drive source for driving the door in the left-right direction is provided on the machine cover, and the opening direction of the door when the door is opened on the ceiling plate of the machine cover At the end, a chip collecting hole with a reinforcing member installed obliquely with respect to the door opening / closing direction at the center is formed, and a scattering prevention member is provided on the lower surface of the ceiling plate along the lower part of the chip collecting hole, The opening is opened by the driving source. Darken the chips with the side surface of the door is slid on the upper surface of the ceiling plate to chip recovery hole to is that which is adapted the chips are collected in the scattering prevention member.

In the invention of claim 1 of the present application, the airframe cover is provided with a drive source for driving the door in the left-right direction, and the ceiling plate of the airframe cover has a door in the center at the opening direction end of the door when the door is opened. A chip collection hole with a reinforcing member installed obliquely with respect to the opening and closing direction is formed, and a scattering prevention member is provided on the lower surface of the ceiling plate along the lower part of the chip collection hole. The chips on the top surface of the ceiling plate were dropped into the chip collection hole by the side surface of the door slid so as to be opened, and the chips were collected by the scattering prevention member . According to these, there are no movable parts such as the movable dividing plate and door guide brushes as in the prior art, there is no risk of opening / closing operation failure or failure, and the sliding due to the door opening operation when loading / unloading the workpiece with the gantry loader. Since the chips can be recovered by moving the chips into the chip collection hole, the structure is simple. Furthermore, since the chips are collected by the opening operation of the door, the movement of the gantry loader is not restricted during the machining of the workpiece, so that it can run freely, so that the cycle time can be shortened . In addition , the anti-scattering member can prevent chips in the processing area from directly scattering from the chip collection holes, and bounce back to the machine cover and scatter outside from the chip collection holes. There is no accumulation of powder.

It is a figure which shows the machine tool provided with the door apparatus of this invention. It is a side view of FIG. 3A and 3B are views showing a state in which the door device is closed, and FIG. 3B is a view showing a state in which the door device is opened. FIG. 4 is an enlarged view on the right side of FIG. It is a figure which shows other embodiment.

  Embodiments of the present invention will be described with reference to FIGS. The machine tool 1 of the present embodiment shown in FIGS. 1 and 2 is called a vertical machining center that performs vertical cutting and other processing on the workpiece W on the table 2. A table 2 is installed on the bed 3 of the machine tool 1. The table 2 includes a first table 4 that reciprocates in the Y-axis direction (front-rear direction) and a second table 5 that reciprocates in the X-axis direction (left-right direction), and holds the workpiece W on the second table 5. A clamping device 6 is installed. A column 8 having a spindle head 7 that reciprocates in the Z-axis direction (vertical direction) is erected on the rear portion of the bed 3. A tool holder 10 holding a tool 9 for processing the workpiece W is detachably mounted on the spindle head 7. A tool magazine 11 storing a plurality of tool holders 10 is provided on the side of the column 8. A tool changer (not shown) is provided between the tool magazine 11 and the spindle head 7, and the tool holder 10 of the tool magazine 11 and the tool holder 10 of the spindle head 7 are exchanged by the tool changer. Yes. The machine tool 1 covers the entire machine 1 including the machining area in order to prevent chips and cutting fluid generated by machining the workpiece W from scattering from the machining area above the table 2 to the outside of the machine 1. A body cover 12 is provided. Further, an installation rail 31 of a gantry loader 30 exemplified as a conveying means is installed above the machine tool 1. A traveling platform 33 equipped with a loader head 32 exemplified as a transport unit moves between tables (not shown) installed on both sides of the machine tool 1 along the installation rail 31. The loader head 32 is provided with a holding mechanism 34 that holds the workpiece W.

  An opening 13 is provided on the front side of the ceiling plate 12a of the machine body cover 12 so that the loader head 32 can be taken in and out toward a processing area in the machine body cover. The opening 13 is provided with a door 14 that can be opened and closed. In addition, a fixed block 15 is provided in front of the ceiling plate 12a of the machine body cover 12, a door opening / closing cylinder 16 as a drive source is provided on the front surface of the fixed block 15, and a guide block 17 is provided on the rear surface. A guide bar 18 is supported by the guide block 17 so as to be slidable left and right, and one end of the guide bar 18 is fixed to the tip of a cylinder rod of the door opening / closing cylinder 16 via a bracket 19. The door 14 is fixed to the guide bar 18 via the bracket 20 and is supported so as to be slidable left and right by the operation of the door opening / closing cylinder 16. The door 14, the fixed block 15, the door opening / closing cylinder 16, the guide block 17, the guide bar 18, and the brackets 19 and 20 are provided symmetrically on both sides of the opening 13, respectively. In FIG. 3, the description will be given by using the right door 14.

  As shown in FIGS. 3 and 4, the ceiling plate 12a of the machine body cover 12 has an opening direction end of the door 14 when the door 14 is opened, that is, a right end of the ceiling plate 12a (a left end of the left door 14). A chip collection hole 21 that is largely cut out in a rectangular shape is provided. In the vicinity of the center of the chip collection hole 21, the reinforcing member 22 is tilted so that the door opening / closing direction, that is, both ends in the left-right direction are not aligned with the door opening / closing direction so that chips do not collect on the upper surface. The ceiling plate 12a is integrally formed. As a result, the chips can be dropped into the chip collection hole 21 without collecting on the reinforcing member 22.

  A scattering prevention member 23 is provided along the lower side of the chip collection hole 21 on the lower surface of the ceiling plate 12 a of the body cover 12. The anti-scattering member 23 includes a main anti-scattering member 23a provided to prevent chips, cutting fluid, and the like from directly scattering from the chip collecting hole 21 to the outside of the machine body cover 12, and rebound from the inner surface of the machine body cover 12. And a sub-scattering prevention member 23b provided to prevent scattering from the chip collection hole 21 to the outside of the machine body cover 12, and a frame provided so as to surround the outer periphery of the main scattering prevention member 23a and the sub-scattering prevention member 23b. It is comprised from the member 23c. The main scattering prevention member 23a is provided so as to be inclined downward toward the door opening / closing direction outer side, that is, the right side, and the auxiliary scattering prevention member 23b is suspended downward from the lower surface of the ceiling plate 12a of the fuselage cover 12 to prevent main scattering. By forming the opening between the member 23a and the sub-scattering prevention member 23b to be narrowed, chips, cutting fluid, etc. are not scattered from the chip collection hole 21 to the outside of the machine body cover 12 and the ceiling plate 12a. Chips on the upper surface can be dropped from the chip collection hole 21 into a processing area inside the machine body cover 12.

  In addition, a guide cover 24 is provided on the ceiling plate 12a of the machine body cover 12 so as to surround the sliding range of the door 14 and the chip collection hole 21, so that chips and cutting fluid collected on the ceiling board 12a do not spread. Guiding to fall into the powder collection hole 21. The guide cover 24 is provided with a proximity switch 25 for detecting the opening / closing of the door, and the proximity block 26 provided on the door 14 detects the opening / closing of the door 14. The guide cover 24 is provided with a lifting prevention member 27 that prevents the door 14 from lifting along the door opening / closing direction. A cover 28 is provided so as to cover the door opening / closing cylinder 16 and the like.

  Next, the operation of the machine tool 1 will be described. The workpiece W processed in advance by the gantry loader 30 is unloaded from the machine tool 1. In order to carry the workpiece W to be processed next from above the machine tool 1 into the machine tool 1, the traveling platform 33 on which the loader head 32 holding the workpiece W is mounted moves along the installation rail 31. As shown in FIGS. 1 and 2, when the traveling platform 33 moves above the opening 13 of the body cover 12, the traveling platform 33 stops. When the workpiece W is conveyed, the chips adhering to the workpiece W fall and accumulate on the ceiling plate 12a of the machine body cover 12. When the carriage 33 stops, the guide bar 18 slides by the operation of the door opening / closing cylinder 16, and the door 14 fixed to the guide bar 18 slides on the ceiling plate 12 a of the machine body cover 12 to the end in the opening direction. Part 13 is opened. At this time, the chip is collected at the end of the door in the opening direction by pushing the chip accumulated on the ceiling plate 12a of the body cover 12 in the door opening direction (right direction). 21 has been dropped. The chips dropped into the chip collection hole 21 are collected in the body cover 12 along the scattering prevention member 23. Next, when the proximity switch 25 detects opening of the door, the loader head 32 descends toward the clamping device 6 from the opened opening 13 and places the workpiece W on the clamping device 6. The workpiece W placed on the clamp device 6 is held by a clamp mechanism.

  When the loader head 32 carrying the workpiece W is raised, the door 14 is slid by the operation of the door opening / closing cylinder 16 and the opening 13 is closed. Thereafter, the workpiece W held by the clamping device 6 is processed by the tool 9 attached to the spindle head 7. Chips, cutting fluid, and the like are scattered during the processing of the workpiece W. The scattering prevention member 23 provided on the lower surface of the ceiling plate 12a along the lower part of the chip collection holes 21 passes the chip collection holes 21 from the processing region. The machine tool 1 is not scattered outside. During processing of the workpiece W, the loader head 32 stands by above the opening. When the processing of the workpiece W is completed, the processed workpiece W is unloaded from the machine tool 1 to the next process by the gantry loader 30 that has been waiting above the opening 13, and then the workpiece W to be processed next is processed from the previous process. It is carried into the machine 1. In addition, the chip | tip which fell on the door 14 falls from the door 14 by the opening / closing of the door 14, and is collect | recovered.

  As described above, the chips accumulated on the ceiling plate 12a of the machine body cover 12 can be easily collected in the machine body cover 12 through the chip collection holes 21 each time the door 14 is opened and closed by carrying the workpiece W in and out. Further, the scattering prevention member 23 does not scatter chips, cutting fluid, or the like from the chip collection hole 21 to the outside of the machine body cover 12. Further, since there is no movable part for collecting the chips on the ceiling plate of the machine body cover and the brush to which the chips adhere, there is no risk of opening and closing operation and failure, and the door side surface 14a that pushes away the chips. Is flat and does not get entangled with chips, and can remove chips from the top surface of the ceiling board 12a with a simple structure. In addition, since the traveling of the gantry loader 30 is not restricted during the processing of the workpiece W, the preparation of the workpiece W to be processed next can be advanced, and the cycle time is shortened.

  In addition, when the door 14 is formed of resin, friction when sliding the ceiling plate 12a of the door 14 can be reduced. When the door 14 is formed of resin, especially in a horizontal machining center having the main shaft 7 horizontally, chips when machining the workpiece fly upward, and the chips hit the closed end of the door 14 and the closed end is scraped off. There is a fear. Therefore, as shown in FIG. 5, a metal plate 29 is provided at the closed end of the left door 14 over the front and rear direction of the door 14. The metal plate 29 covers the upper end of the right door 14 when the left and right doors 14 are closed. Even if the door 14 is cut and a hole is formed by the metal plate 29, it is possible to prevent chips from scattering from the processing area to the outside of the machine body cover 12.

DESCRIPTION OF SYMBOLS 1 Machine tool 3 Bed 12 Machine body cover 12a Ceiling board 13 Opening part 14 Door 21 Chip collection hole 22 Reinforcement member 23 Scatter prevention member 30 Gantry loader (conveyance means)
32 Loader head (conveyance unit)

Claims (1)

An airframe cover that covers the entire machine including the machining area is arranged on the bed, and an opening that allows the conveyance unit of the conveying means that moves above the machine body cover to enter and exit the machining area and a door that can open and close the opening. In the chip collection structure of a machine tool cover of a machine tool, which is provided on the ceiling board of the machine body cover, and the chips falling on the upper surface of the ceiling board of the machine body cover due to the movement of the transport unit can be collected in the processing area of the machine body cover, A drive source for driving the door in the left-right direction is provided on the fuselage cover, and the ceiling member of the fuselage cover is provided with a reinforcing member obliquely with respect to the door opening / closing direction at the center at the opening direction end of the door when the door is opened. An erected chip collection hole is formed, a scattering prevention member is provided on the lower surface of the ceiling plate along the lower part of the chip collection hole, and the door is slid so as to open the opening by a driving source. On the top surface of the ceiling board by the side Darken powder into chips recovery hole, collecting chips structural airframe cover of the machine tool, characterized in that as the chips are collected in the scattering prevention member.

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