JP2008246585A - Carry-out device of parts and machine tool with the carry-out device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carry-out device of parts, which carries out parts to the outside of a cover structure without giving an improper impact to machined parts while having a structure storable inside the cover structure used for a machine tool, and to also provide the machine tool with the carry-out device. <P>SOLUTION: The carry-out device 10 consists of: a first conveyance means 12 gripping machined parts 2; and a second conveyance means 14 receiving the parts 2 from the first conveyance means 12 and carrying out them to the outside of the machine. All of the components of the carry-out device 10 are housed inside relative to the outside vicinity position of the edge of a trestle 5. Moreover, all of the components are configured not to be protruded to a working side from the outside vicinity position even when the device is in operation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a part carrying-out device that is provided in a machine tool and grips a part machined from a workpiece and carries it out of the machine, and a machine tool provided with the carrying-out device.

  In general, there is an automatic lathe that continuously processes multiple parts using a long bar as a workpiece, or processes multiple parts continuously while automatically supplying a short bar as a workpiece. For example, as shown in Patent Document 1, there is a type provided with a movable separator chute that receives the above-described parts separated from the main shaft and a receiving box that accommodates the parts moved on the separator chute.

  The automatic lathe stores and stores parts in a receiving box via a separator chute. There is also an automatic lathe that is configured so that parts are dropped on a belt conveyor provided inside the automatic lathe (inside the cover structure) instead of a receiving box and discharged from a pre-formed conveyor opening. It is known.

JP 2001-310201 A

  Some of the above parts must be handled with great care, such as those with extremely thin diameters, easily deformed, high dimensional accuracy, or low surface roughness (for example, mirror finished). There is something that will not be. In general, such components are gripped by a chuck or hand, not a separator chute, so that an impact is not applied as much as possible, and an arm structure having the chuck or hand at the tip intersects the axis of the main shaft. It is conveyed on the belt conveyor by moving in the direction to do. However, since the arm structure is generally relatively large, when moving as described above, it is difficult to accommodate the arm structure within the range near the outside position of the frame edge on the moving direction side. There is a problem that the installation area of the automatic lathe becomes large.

  Particularly in recent years, machine tools such as the above-mentioned automatic lathe are often used in combination with equipment such as a palletizer that receives parts from the machine tool. In this case, the palletizer is often arranged adjacent to the front surface (operating side) of the machine tool from the viewpoint of layout constraints and workability, and the above arm structure is placed on the front side of the machine tool on the outside of the frame edge. It is not preferable to project it excessively.

  Therefore, the present invention is a structure that fits compactly without excessively projecting outside the pedestal edge of a machine tool that processes a workpiece mounted on a spindle into a predetermined part, and smoothly processes a part processed from the workpiece. It is an object of the present invention to provide a part unloading device that can be unloaded from a machine tool and a machine tool including the unloading device.

  In order to achieve the above object, the invention according to claim 1 includes a gantry on which the main shaft is mounted and a cover structure attached to the gantry side so as to cover a machining area of a work mounted on the main shaft. A first conveying means provided on the machine tool for conveying the workpiece processed from the workpiece and moving in a direction intersecting with the axis of the spindle; and inheriting the component from the first conveying means A second transport means for transporting the cover structure outside the cover structure, and the second transport means is in a range inside the position near the outside of the pedestal edge that is on the moving direction side of the first transport means. In the carried-out apparatus for the housed parts, the posture of at least a part of the first transport means is changed so as to house the first transport means within the range as the first transport means moves the parts. Part with posture changing means To provide a carry-out device.

  According to a second aspect of the present invention, there is provided the component unloading apparatus according to the first aspect, wherein the moving direction of the first conveying means is a lateral direction of the main shaft.

  According to a third aspect of the present invention, there is provided the component unloading device according to the second aspect, wherein the horizontal direction of the main shaft is a direction obliquely downward from the main shaft.

  According to a fourth aspect of the present invention, in the component carry-out device according to any one of the first to third aspects, the first transporting unit grips the component, and the hand is turned by one fulcrum. A linear motion member that supports the linear motion member, and a linear motion guide that moves the linear motion member in a lateral direction along a moving direction of the hand is provided. The guide groove is provided between the hand side and an operating shaft that engages with the guide groove, and the hand is positioned between the lateral direction and the vertical direction as the linear motion member is moved by the linear motion guide. The guide groove is provided with a first groove parallel to the moving direction of the linear motion member and a second groove continuously formed so as to intersect the first groove so as to be changed. To provide a parts unloading device.

  According to a fifth aspect of the present invention, in the component unloading apparatus according to any one of the first to fourth aspects, a cover is provided for covering the first conveying means, and the cover is the first conveying means. A movable cover that opens and closes in conjunction with the movement of the movable member, and the movable cover is in a standby state in which the first conveying unit does not grip the component of the main shaft and is between the main shaft and the first conveying unit. When the first conveying means grips the component of the main shaft, the first conveying means opens the space between the main shaft and allows the component to be gripped. A component unloading device configured to be positioned is provided.

  According to a sixth aspect of the present invention, in the component unloading apparatus according to the fifth aspect of the present invention, interlocking means for opening and closing the movable cover in conjunction with the movement of the first transport means is provided integrally with the movable cover. And a cam that moves integrally with the first conveying means and contacts the cam follower, and that opens and closes the movable cover along the cam follower. Provided is a component carrying device having a surface.

  According to a seventh aspect of the present invention, in the component unloading device according to the fourth aspect, a cover for covering the first conveying means is provided, and the cover opens and closes in conjunction with the movement of the first conveying means. The movable cover is in a closed position that shields between the main shaft and the first conveying means in a standby state in which the first conveying means does not grip the component of the main shaft. When the first conveying means grips the component of the main shaft, the first conveying means and the main shaft are opened, and the first conveying device is configured to be positioned at an open position that allows the gripping of the component, The interlocking means for opening and closing the movable cover in conjunction with the movement of the first transport means is provided integrally with the cam follower provided integrally with the movable cover and the linear motion member. From the actuating member that contacts the cam follower Ri, thereby forming a cam surface for opening and closing the movable cover and along the cam follower to said actuating member, to provide an unloading device of the parts.

  According to an eighth aspect of the present invention, in the component unloading device according to any one of the first to seventh aspects, the second transport unit is configured to move the second transport unit at a position where the component is inherited from the first transport unit. 1 A component receiving portion on which a component held by the conveying means is placed and a base that supports the component receiving portion, and the base reciprocates between the inherited position and the component unloading position. Provided is a component carry-out device which can be configured.

  According to a ninth aspect of the present invention, in the component unloading device according to the eighth aspect, the second transporting unit moves the component receiving portion to the first position when the base is located at the transfer position or the unloading position. Provided is a component carry-out device having a lift mechanism that lifts up toward one conveying means.

  A tenth aspect of the present invention provides the component unloading apparatus according to any one of the first to seventh aspects, wherein the second conveying means is a belt conveyor capable of intermittent feed operation. To do.

  An eleventh aspect of the present invention provides a machine tool including the component carry-out device according to any one of the first to tenth aspects.

  According to the present invention, by changing the posture of the first conveying means by the posture changing means, the first conveying means is accommodated in a range inside the outside vicinity position of the pedestal edge on the moving direction side of the first conveying means in the machine tool. can do. Therefore, it is possible to install the component carry-out device in a compact manner with a minimum protrusion from the pedestal edge. In particular, if the first conveying means is set so as not to protrude from the edge of the gantry, it can be installed with the same occupation area as a machine tool that does not have a component conveying device, and a cover that is almost the same surface as the gantry edge is installed. The size of the cover can be made equal to that of a machine tool that does not have a component conveying device.

  By making the moving direction of the first conveying means the lateral direction of the main shaft, it is not necessary to configure the component unloading device on the upper side of the main shaft, the overall height of the machine tool can be suppressed, Workability can be improved. In particular, when the first conveying means is moved obliquely downward from the main shaft, the second conveying means can be arranged below the first conveying means, and parts can be easily delivered to the second conveying means. It is also preferable from the viewpoint of the visibility of the main shaft.

  Specifically, the first conveying means is simplified by a hand that grips a component, a linear motion member that supports the hand so as to be pivotable, and a linear guide that moves the linear motion member in the lateral direction along the moving direction of the hand. The arm structure can be smoothly transported without giving an extremely large impact or the like to the parts, and the arm structure can be used even when the first transport means is an arm structure having a chuck or a hand. It can be easily accommodated within the range. Further, the posture changing means is composed of a guide groove provided between the fixed side and the hand side with respect to the movement of the linear motion member, and an operating shaft engaged with the guide groove, along with the movement of the linear motion member by the linear guide. The guide groove is continuously formed to intersect the first groove and the first groove parallel to the moving direction of the linear motion member so that the posture of the hand is changed between the horizontal direction and the vertical direction. By providing the second groove, the posture changing means can be configured easily.

  Also, a cover for covering the first conveying means is provided, and the cover has a movable cover that opens and closes in conjunction with the movement of the first conveying means. The movable cover is configured so that the first conveying means grips the parts of the main shaft. In a standby state where no operation is performed, it is positioned at a closed position that shields between the main shaft and the first conveying means, and the first conveying means and the main shaft are opened when the first conveying means grips the parts of the main shaft. And it is possible to prevent the coolant and chips from scattering to the first conveying means by being configured to be positioned at the open position that allows the gripping of the components. Further, since the operation of the movable cover is interlocked with the operation of the first conveying means, there is no need to perform an operation for operating the movable cover separately.

  In addition, interlocking means for opening and closing the movable cover in conjunction with the movement of the first conveying means, and a cam follower integrally provided on the movable cover, are moved integrally with the first conveying means and are in contact with the cam follower. The interlocking means can be simply configured by forming a cam surface which is composed of an actuating member and along which the cam follower is driven to open and close the movable cover.

  On the other hand, the second transport means is configured as a transport shuttle configured to reciprocate between the component transfer position and the component carry-out position, so that the second transport means is provided between the second transport means and the first transport means or the second transport. Since it is possible to suppress impacts and the like on the parts in the transfer of the parts between the means and the container of the parts downstream from the second conveying device such as a palletizer, it is easy to carry out parts that need to be handled with particular care. Can be done.

  Furthermore, by providing the second transport means with a lift mechanism, it is possible to more smoothly transfer the parts between the second transport means and the first transport means or the palletizer.

  If the second conveyor is a belt conveyor capable of intermittent operation, unique effects such as a simple structure of the second conveyor can be obtained.

  In the machine tool provided with the component carrying-out device of the present invention, even when the first conveying means performs the conveyance of the parts while moving to the front side of the machine tool, the first conveying means becomes the front side of the machine tool. It does not protrude excessively to the outside of the pedestal edge, and the space for installation can be saved when used in combination with equipment such as a palletizer.

Hereinafter, the present invention will be described in detail with reference to the drawings.
1 and 2 are a schematic plan view and an elevation view showing a machine tool 1 such as an automatic lathe provided with the component carrying-out device 10 and a palletizer 3 for receiving a part 2 processed from a workpiece by the automatic lathe 1. FIG. is there. The machine tool 1 includes a gantry 5, a back spindle stock 4 and a tool post (not shown) provided on the upper center side of the gantry 5. A back spindle is mounted on the back spindle head 4 so as to face the spindle 4 ', and a work (a bar in the illustrated example) is detachably attached to the tip of the back spindle. In addition to processing the workpiece on the main spindle, the tool mounted on the tool post (not shown) processes the workpiece on the rear spindle by machining the rear spindle 4 in the direction of the center axis of the rear spindle, and parts of a predetermined shape are processed. .

  The automatic lathe 1 is a cover structure 6 configured to cover the entire upper half of the automatic lathe 1 including a frame 5 on which a back spindle 4 and a tool rest (not shown) are arranged, and a region near the outside of the frame edge. This prevents chips and grinding oil from being scattered during machining of the workpiece on the main spindle and the rear spindle, and restricts the operator's access to the inside of the automatic lathe (particularly the machining area). The palletizer 3 is arranged on the front operation surface 7 side of the machine tool 1 for improving workability. Note that the outer vicinity area here refers to an area within the range in which the frame edge extends from the area extending vertically upward to some extent but does not substantially affect the operation of the operator or the installation layout of the machine tool. To do.

  The automatic lathe 1 is provided with a component unloading device 10 for unloading the component 2 machined from the workpiece from the back spindle 4 to the outside of the machine. As shown in FIG. 3, the carry-out device 10 includes a component separator 12 that grips the above-described component 2 that is mounted on the rear spindle 4 after processing, and a transport shuttle 14 that inherits the component 2 from the component separator 12. Composed. The cover structure 6 cooperates with the gantry 5 to form a concave portion in the vicinity of the boundary between the cover structure 6 and the gantry 5, and the transport shuttle 14 is disposed in the concave portion. Specifically, as shown in FIG. 2, channel portions 8, 8 ′ extending in the left-right direction are formed on the front and rear of the gantry 5, and the channel portion 8 is located below the headstock 4. On the other hand, the cover structure 6 closes the upper side of the channel portions 8 and 8 ', and forms a concave portion that is laterally open (opened laterally) together with the channel portions 8 and 8'. The cover structure 6 includes a vertical surface that is the same as the front end surface of the gantry 5 and covers the processing chamber at a portion covering the channel portions 8 and 8 ′ and covers the opening of the concave portion, and the palletizer 3. Can be placed adjacent to each other. The transport shuttle 14 is accommodated in the recess, and a component separator 12 is provided between the back main shaft 4 and the transport shuttle 14. As shown in FIG. 3, the transport shuttle 14 is positioned below the back main shaft 4 and the component separator 12. Due to the configuration of the cover structure, the concave portion is shielded from the inside of the cover structure, and therefore, scattering of cutting wastes and the like during work processing on the transport shuttle 14 is prevented.

  The component separator 12 includes a gripping unit that is a first transport unit that grips the component 2 and unloads it from the back spindle 4. The gripping unit includes a chuck or hand 16 that grips the component 2, a hand support member 18 that fixes and supports the hand 16, and a linear motion member 22 that rotatably supports the hand support member 18 by a fulcrum 20. As shown in FIG. 3, the hand 16 includes claws facing each other, and can hold and grip the outer peripheral side of the component 2 by opening and closing the claws. The component separator 12 includes a linear guide 24 that supports the linear motion member 22 so as to be slidable. The linear guide 24 includes a support plate 30 fixed to a mounting block 26 fixed to the gantry 5 by bolts 28, and a rodless cylinder 32 disposed along the support plate 30.

  The rodless cylinder 32 includes a guide shaft 34 disposed on the back side of the support plate 30 and a rodless cylinder moving body 38 to which the linear motion member 22 is attached by a bolt 36. The moving body 38 projects forward from the opening 40 provided in the support plate 30, and moves along the guide shaft 34 by driving the rodless cylinder 32. The linear motion member 22 moves along the guide shaft 34 by driving the rodless cylinder 32, and the gripping unit moves by the movement of the linear motion member 22. The support plate 30 is fixed to the gantry 5, whereby the component separator 12 is disposed and fixed above the transport shuttle 14.

  A linear motion guide 42 extending in parallel with the guide shaft 34 is fixed to the support plate 30, and the linear motion member 22 is supported by the linear motion guide 42 via a linear motion guide moving body 44. The movement of the linear motion member 22 is guided by the linear motion guide 42.

  The hand support member 18 has an operation shaft 46, and the operation shaft 46 is slidably engaged with the guide groove 50 of the operation shaft guide 48 fixed to the support plate 30 on the fixed side with respect to the movement of the linear motion member 22. Match. As shown in the drawing, the guide groove 50 has an L shape with a predetermined diameter R formed at the corner, and one side of the L shape is a guide direction of the linear guide 24 (guide axis direction of the rodless cylinder 32) G. And the other side is perpendicular to the guide direction G. The guide groove 50 includes a first groove 50a parallel to the moving direction of the linear motion member 22, and a second groove 50b continuously formed so as to intersect the first groove 50a. The groove 50b extends upward.

  FIG. 4 is a diagram illustrating the operation of the component separator 12. First, the hand 16 waiting in the concave portion 8 projects and moves toward the rear main shaft 4 in order to grip the component 2 at the position A1 after finishing the processing on the rear main shaft 4. When the hand 16 grips the component 2, the operating shaft 46 of the hand support member 18 is positioned at the position B1. The back spindle 4 is contrasted from the state in which the hand 16 grips the component 2, whereby the component 2 is separated from the back spindle 4. Next, by driving the rodless cylinder 32, the gripping unit moves in a direction (lower left in the illustrated example) away from the back main shaft 4 along the guide direction G of the linear guide 24 (see FIG. 3). When the operating shaft 46 moves to the position B2 just before the corner of the guide groove 50, the component 2 gripped by the hand 16 moves to the position A2.

  The operating shaft 46 continuously moves along the guide groove 50. However, since the guide groove 50 has the L shape as described above, the moving direction of the operating shaft 46 gradually changes from the direction G to the direction perpendicular to the direction G. On the other hand, the fulcrum 20 of the hand support member 18 continues to move linearly along the direction G together with the linear motion member 22. Accordingly, as the moving direction of the operating shaft 46 changes, the hand support member 18 pivots clockwise in FIG. 4 with respect to the linear motion member 22 around the fulcrum 20 (shown as “+” in FIG. 4). The hand 16 is inclined. For example, when the operating shaft 46 is at the position B3, the component 2 gripped by the inclined hand 16 is positioned at the position A3.

  When the operation shaft 46 continues to move from the position B3 to the positions B4 and B5, the hand support member 18 further turns, the hand 16 is inclined, and the component 2 moves to the positions A4 and A5. Therefore, as indicated by the trajectory T, the component 2 moves linearly from the position A1 to A2, and moves along the downwardly convex curve from the position A2 to A5. When the component 2 is positioned at the last position A5, the hand 16 is changed in posture to a vertical posture that is substantially vertically downward as illustrated (see FIG. 7).

  When the hand 16 is directed vertically downward, the component 2 is supported at the upper position in the concave portion 8 so that the axis is parallel to the axis of the back main shaft 4, and the delivery to the transport shuttle 14 is facilitated. By changing the posture of the hand 16 constituting a part of the gripping unit to the vertical posture, even if the gripping unit moves to the concave portion 8 side, the gripping unit does not protrude to the outside of the concave portion. Housed inside the front edge. In the present embodiment, the posture changing means for changing the posture of the hand has a simple configuration including the operating shaft 46 and the guide groove 50. Further, the gripping unit can be configured to move obliquely upward rather than obliquely downward as shown.

  As shown in FIGS. 5 and 6, a cover that covers the component separator 12 may be provided. The cover can prevent scattering of coolant or the like to the component separator side. The cover includes a fixed cover 21 and a movable cover 23, and the movable cover 23 is rotatably attached to the fixed cover 21 by a fulcrum 25. Both the fixed cover 21 and the movable cover 23 have a U-shaped (gate shape) cross-sectional shape.

  The fixed cover 21 is configured to cover both the left and right sides and the upper side of the component separator 12, and the movable cover 23 is configured to cover the back main shaft side of the component separator 12 so as to be openable and closable. A cam roller 27, which is a cam follower, is integrally fixed to the movable cover 23, while an operation plate 29, which is an operation member, is attached to the linear motion member 22 so as to protrude forward. The cam roller 27 and the operation plate 29 are disposed so as to come into contact with each other while moving toward the back main shaft of the gripping unit.

  The movable cover 23 is urged clockwise by the urging spring 31 in FIG. When the movable cover 23 is in a standby state where the gripping unit is waiting at a position A5 that is outside the processing area during processing by at least the back spindle 4, the back plate 23a is positioned at the closed position. On the other hand, when the gripping unit moves toward the rear main shaft 4 in order to grip the components mounted on the rear main shaft, the operation plate 29 together with the linear motion member 22 faces the rear main shaft 4 as shown in FIG. Moving. When the position is not close to the back main shaft 4 as shown in FIG. 5 or the positions A3 to A5 in FIG. 4, the back plate 23a of the movable cover 23 is directed to the component separator 12 side such as coolant and cutting waste. Prevent scattering.

  During the movement of the gripping unit, the operating plate 29 comes into contact with the cam roller 27. After contacting the operating plate 29, the cam roller 27 moves from the main shaft side surface of the operating plate 29 to the upper surface while continuously contacting. Here, a continuous surface from the surface on the main shaft side of the operation plate 29 to the upper surface forms a cam surface. As the cam roller 27 moves along the cam surface, the movable cover 23 gradually opens around the fulcrum 25. In this way, when the hand 16 grips the processed component of the rear main spindle, the movable cover 23 is positioned in the “open position”, and the hand 16 protrudes outside the movable cover 23 and can grip the component.

  The movable cover 23 protects the component separator 12 during processing of the workpiece, and when the hand 16 grips a component, the movable cover 23 is in an open position and allows the hand 16 to grip the component. The timing at which the movable cover 23 begins to open may be any timing as long as the hand 16 does not contact the movable cover 23. However, from the viewpoint of suppressing the scattering of the coolant as much as possible, the position where the hand 16 is as close to the rear spindle as possible. Is desirable. Specifically, the movable cover 23 is in the closed position and the hand 16 is in the closed position at the position where the hand 16 is not accessing the back spindle 4 such as the position shown in FIG. 5 or the positions A3 to A5 in FIG. It is preferable to start opening immediately before coming into contact with the movable cover.

  In the illustrated example, the fixed separator 21 and the movable cover 23 constitute the component separator cover. However, it is also possible to construct only the movable cover. The movable cover 23 may be swingably attached to a fixed-side structure other than the fixed cover 21.

  As shown in FIG. 7 in which the entire transport shuttle 14 is viewed from the front (working side), the transport shuttle 14 constitutes a second transport means that inherits the parts from the parts separator, and the parts 2 from the hand 16 of the parts separator 12. Drive means 56, such as a rodless cylinder, between a part transfer position 52 for receiving the part 2 and a part carry-out position 54 where the part 2 can be transferred out of the automatic lathe 1 and the part 2 can be transferred to the palletizer. Can reciprocate linearly along the conveyance path 58. 8 and 9 are views of the transport shuttle 14 at the parts receiving position 52 as seen from the front and side, respectively. The transport shuttle 14 includes a component receiving member 60 that receives the component 2 from the hand 16 of the component separator 12, a support member 62 that supports the component receiving member 60 so as to move up and down, and a base 64 to which the support member 62 is attached.

  At both ends of the transport path 58, an end stopper 66 such as a rigid rod and a shock absorber 68 such as an oil damper for positioning the transport shuttle 14 at the component transfer position 52 or the component discharge position 54 are provided (only for the component transfer position). (Illustrated in FIG. 8). The end stopper 66 abuts on the base 64 and restricts the movement of the transport shuttle 14. On the other hand, the shock absorber 68 abuts on the base 64 immediately before the base 64 abuts on the end stopper 66, and softens the impact between the base 64 and the end stopper 66.

  As shown in FIGS. 8 and 9, the component receiving member 60 of the transport shuttle 14 is lifted upward by a lift mechanism to facilitate component transfer with the hand 16 at the component transfer position 52. The lift mechanism includes the support member 62 described above, a pivot 70 having one end fixed to the support member 62, a turning plate 72 fixed to the other end of the pivot 70, and first and second provided on the turning plate 72. Cam followers 74 and 76, and a cam stopper 78 such as a bolt that is fixed on the conveyance path 58 and can contact the first cam follower 74 in a substantially horizontal direction. As shown in FIG. 7, the component receiving member 60 and the base 64 have a U-shape when viewed from the side, and the support member 62 is positioned in the recess. The pivot 70 passes through a hole 80 provided in the base 64, and the support member 62 and the pivot plate 72 can pivot about the pivot 70. The first and second cam followers 74 and 76 are formed as protrusions provided on opposite sides of the pivot plate 72 with the pivot 70 interposed therebetween.

  Next, the operation of the lift mechanism will be described. The component receiving member 60 of the transport shuttle 14 when moving between the component transfer position 52 and the component carry-out position 54 is lowered so as to be close to the base 64 due to its own weight, as shown in the approximate center of FIG. It becomes a state. Here, as shown in FIG. 8, when the transport shuttle 14 approaches the component transfer position 52 and the first cam follower 74 comes into contact with the bolt 78, the first cam follower 74 cannot move any more, but the base 64 continues to the right. Since it moves, the support member 62 connected to the swivel plate 72 via the swivel plate 72 and the pivot 70 pivots counterclockwise around the pivot 70. Accordingly, the component receiving member 60 supported by the support member 62 moves up, and smooth component transfer can be performed between the component separator 12 and the hand 16 of the component separator 12 in a substantially vertical downward posture.

  When the transfer of the parts is completed and the transport shuttle moves to the left in FIG. 8, due to the weight of the part receiving member 60, the pivot plate 72 and the support member 62 pivot clockwise about the pivot 70 and again. The component receiving member 60 is lowered. Alternatively, an urging means (not shown) such as a spring for urging the component receiving member 60 downward is provided so that the component receiving member 60 is in a lowered state except for the component transfer position and the component unloading position. Also good. At the component unloading position 54, the bolt 78 '(see FIG. 7) corresponding to the cam stopper 78 abuts against the second cam follower 76, and the component receiving member 60 is raised as described above. Except for the point that the bolt 78 ′ abuts against the second cam follower 76, the operation is the same as the ascending operation at the component transfer position 52, and thus detailed description thereof is omitted. Accordingly, even at the parts unloading position 54, the parts can be smoothly transferred between the transport shuttle 14 and the robot (not shown) that transfers the parts to the palletizer 3 by the raised parts receiving member 60.

  Note that the component receiving portion 60 of the transport shuttle 14 is in a lowered state except when the transport shuttle 14 is in the component transfer position 52 or the component unloading position 54. Accordingly, the height of the cover structure 6 through which the transport shuttle 14 passes before reaching the parts unloading position 54 can be reduced, the space for maintenance on the spindle and the tool post can be widened, and workability around the spindle and the tool can be improved. Can be improved.

  Although the transport shuttle 14 capable of linearly reciprocating movement has been described as the second transport means, a belt conveyor capable of placing components from the component separator 12 is used, and the belt conveyor is intermittently fed so that the components do not collide with each other. You may choose the method to do. However, for parts and the like including a mirror-finished surface, conveyance by means in which the part of the part that contacts the other member is limited to a predetermined part, such as the above-described transportation shuttle, is suitable. Further, since the transport shuttle can accurately define the posture of the parts to be carried out, the transfer to the palletizer can be smoothly performed as compared with the case where the parts are carried out in a random posture.

  In the parts carrying-out device, all the components are accommodated in the range inside the position near the outside of the pedestal edge, and none of the components protrudes from the above range to the work side even during operation. Configured as follows. Specifically, since the component separator 12 is normally disposed inside the cover structure 6 and on the operation front side of the machine tool 1, it is gripped by the rear spindle 4 so as not to obstruct the operator's visual recognition or operation. It does not protrude greatly above the position of the workpiece 2 that is being placed. Further, the component separator 12 is not a simple configuration such as an arm that swings about one fulcrum, and the component conveyance path (trajectory T in FIG. 4) from the rear spindle to the conveyance shuttle 14 is a linear motion linear guide 24. The structure is not significantly different from Accordingly, since the guide direction G of the linear guide 24 extends obliquely downward from the rear spindle toward the front of the machine tool, the occupied space of the component separator 12 including the parts is obliquely downward from the approximate center of the rear spindle and the transport shuttle. The space above 14 can be limited. Accordingly, the component separator 12 can be accommodated compactly in a place where the work in the cover structure 6 is not hindered. The parts separator 12 "grips" the processed parts and conveys them from the back spindle 4. Therefore, a separator chute, which is a movable bowl-like object, is provided below the back spindle to place the parts outside the machine. It is suitable for transporting parts that need to be handled with care, compared to a structure that “rolls down”.

  The transport shuttle 14 is accommodated inside the cover structure 6 except when located near the component unloading position 54, and the component unloading position 54 is outside the cover structure 6 but on the front surface of the machine tool 1 (operation Surface) is disposed at a place other than the 7 side (left side toward the operation surface 7 in FIG. 1). Therefore, no component unloading components are projected on the machine tool's operation side, ensuring the safety of the operator and reducing the installation space when used in combination with palletizers and other equipment. Is planned.

It is a schematic plan view which shows arrangement | positioning of the automatic lathe provided with the components carrying-out apparatus which concerns on this invention, and a palletizer. FIG. 2 is an elevation view of FIG. 1. FIG. 3 is a partially enlarged view of FIG. 2. It is a figure explaining operation | movement of the separator arm of FIG. It is a figure which shows the structure which attached the movable cover to the separator arm of FIG. 3, Comprising: It is a figure which shows the state which the movable cover closed. It is a figure which shows the state which the movable cover of FIG. 5 opened. It is the figure which looked at the conveyance shuttle of the automatic lathe from the operation side. It is the elements on larger scale of FIG. It is the figure which looked at the conveyance shuttle of FIG. 7 from the side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Automatic lathe 2 Parts 3 Palletizer 4 Back main shaft 5 Base 6 Cover structure 10 Parts unloading device 12 Parts separator 14 Transport shuttle 16 Hand 20 Support point 21 Fixed cover 22 Direct acting member 23 Movable cover 24 Linear guide 27 Cam roller 29 Actuating plate 30 Support Plate 32 Rodless cylinder 42 Linear motion guide 46 Actuation shaft 48 Actuation shaft guide 50 Groove 52 Part transfer position 54 Part unloading position 60 Part receiving member 62 Support member 64 Base 70 Axis 72 Turning plate 74 First cam follower 76 Second cam follower

Claims (11)

Provided for a machine tool having a gantry on which a spindle is mounted and a cover structure attached to the gantry so as to cover a machining area of a workpiece mounted on the spindle,
First conveying means for grasping a part machined from the workpiece and conveying it while moving in a direction intersecting with the axis of the spindle;
A second conveying means that inherits the component from the first conveying means and conveys the parts to the outside of the cover structure;
In the carry-out device for the component housed in the inner side range from the position in the vicinity of the outer side of the gantry end edge on the moving direction side of the first conveying unit, the second conveying unit,
In accordance with the parts transport movement of the first transport means, there is provided a posture changing means for changing the posture of at least a part of the first transport means so as to accommodate the first transport means within the range. Unloading device.   The component unloading apparatus according to claim 1, wherein a moving direction of the first conveying unit is a lateral direction of the main shaft.   The component unloading device according to claim 2, wherein a horizontal direction of the main shaft is a direction obliquely downward from the main shaft. The first conveying means includes a hand that grips the component and a linear motion member that supports the hand by a single fulcrum, and moves the linear motion member in a lateral direction along a movement direction of the hand. Provide a linear motion guide,
The posture changing means is constituted by a guide groove provided between the fixed side and the hand side with respect to the movement of the linear motion member, and an operating shaft engaged with the guide groove, and the linear motion member by the linear motion guide The guide groove, the first groove parallel to the moving direction of the linear motion member, and the first groove intersect the first groove so that the posture of the hand is changed between the lateral direction and the vertical direction as the hand moves. The component carrying-out device according to any one of claims 1 to 3, further comprising a second groove formed continuously.   A cover for covering the first conveying means is provided, and the cover has a movable cover that opens and closes in conjunction with the movement of the first conveying means. The movable cover is configured so that the first conveying means is connected to the main shaft. In a standby state in which no gripping operation is performed on a part, the first transport unit is positioned at a closed position that shields between the main shaft and the first transport unit, and when the first transport unit grips the component of the main shaft, 5. The component carry-out device according to claim 1, wherein the component unloading device is configured to be located at an open position that opens between a conveying unit and the main shaft and allows gripping of the component.   The interlocking means for opening and closing the movable cover in conjunction with the movement of the first transport means is moved integrally with the first transport means and the cam follower provided integrally with the movable cover. The component unloading device according to claim 5, comprising: an actuating member contacting the follower node, and forming a cam surface for opening and closing the movable cover along the actuating member along the cam follower node.   A cover for covering the first conveying means is provided, and the cover has a movable cover that opens and closes in conjunction with the movement of the first conveying means. The movable cover is configured so that the first conveying means is connected to the main shaft. In a standby state in which no gripping operation is performed on a part, the first transport unit is positioned at a closed position that shields between the main shaft and the first transport unit, and when the first transport unit grips the component of the main shaft, Linking means for opening the movable cover in conjunction with the movement of the first transfer means is configured to open between the transfer means and the main shaft and to be positioned at an open position that allows gripping of the component, The cam follower is provided integrally with the movable cover, and the actuating member is provided integrally with the linear motion member and comes into contact with the cam follower as the linear motion member moves. A movable cover that opens and closes along the follower. To form a surface, part of the carry-out device according to claim 4.   The second transport unit includes a component receiving unit on which a component gripped by the first transport unit is placed at a component transfer position from the first transport unit, and a base that supports the component receiving unit. The component unloading device according to claim 1, wherein the base is configured to be capable of reciprocating between the inheritance position and the component unloading position.   9. The component transportation device according to claim 8, wherein the second transport unit includes a lift mechanism that lifts a component receiving portion toward the first transport unit when the base is positioned at the inheriting position or the unloading position. Unloading device.   The component conveying apparatus according to claim 1, wherein the second conveying unit is a belt conveyor capable of intermittent feeding operation.   A machine tool comprising the parts unloading device according to any one of claims 1 to 10.

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