JP2011110622A - Production line and machine tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a machine tool and production line, further miniaturizable by improving space efficiency. <P>SOLUTION: This machine tool includes a spindle stock 50 for installing a tool T for processing a workpiece W, moving means 32 and 42 for moving the spindle stock 50 in the XY direction, a workpiece holding part 70 capable of holding the workpiece W, a contact-separate driving device 81 for moving the workpiece holding part 70 between a workpiece processing position and a retreat position along the Z direction for contacting-separating to the spindle stock 50 by crossing with an XY plane, a tool holder 61 positioned on the upper side to the spindle stock 50 and holding a plurality or singular tool T, and a loader passage 91 for positioning a carrier 100 for supplying the workpiece W to the workpiece holding part 70 or taking out the workpiece W from the workpiece holding part 70 on the upper side separating from the Z direction to the retreat position and in a part separating from the tool holder 61 along the Z direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a production line and a machine tool.

  For example, when a workpiece is cut and processed into a complicated shape such as a cylinder head, a production line is configured by arranging a plurality of machine tools in the order of processing steps. And a workpiece | work is sequentially sent to the machine tool arrange | positioned in the order of the process with the conveying apparatus etc., and the process with respect to a workpiece | work is performed.

  By the way, there is a type that uses a loading device in order to feed a workpiece into each machine tool. As such a type of machine tool, there is one in which a loading device is disposed in front of the machine tool. For example, as disclosed in Patent Document 1, a loading device is provided so as to penetrate the machine tool body. There are also devices that make up the device.

JP-A-6-126585

  By the way, the tool with which a machine tool is equipped is provided so that the movement to the 3 axis directions of XYZ is possible. In addition, it is necessary to maintain good machining accuracy for the workpiece while the tool is movable in the three-axis directions. Therefore, rigidity is required for a part (column, saddle, etc.) for holding the tool. As a result, there is a problem that the machine tool is increased in size.

  Further, in the configuration disclosed in Patent Document 1, when a column or the like moves in the Z direction as shown in FIG. 8, a certain space is required for machining the workpiece. As a result, the loading device is configured to be disposed on the front side while avoiding such a space, which is an obstacle to further downsizing.

  The present invention has been made on the basis of the above circumstances, and an object of the present invention is to provide a production line and a machine tool capable of improving space efficiency and achieving further miniaturization. .

  In order to solve the above problems, a first side of a production line according to the present invention includes a spindle stock capable of attaching and rotating a tool for machining a workpiece, and an XY direction in which the spindle stock is parallel to a predetermined plane. A moving means for moving the workpiece, a workpiece holding portion capable of holding the workpiece when machining the workpiece, and a workpiece holding portion along the Z direction that intersects with and separates from the headstock while intersecting a predetermined plane. Contact / separation drive means for moving between the workpiece machining position and the retreat position, a tool holder located on the upper side separated from the headstock in the Z direction and holding a plurality or single tools, and a retreat position And a loader passage that exists at a position spaced apart from the tool holder along the Z direction and spaced apart from the Z direction. In addition, it is provided with a conveying means for taking out the workpiece from the workpiece holding section, and the conveying means has a conveying rail that straddles a plurality of machine tools, a chucking portion that grips the workpiece, and is provided so as to be movable along the conveying rail. A mobile unit.

  Further, according to another aspect of the production line of the present invention, in the above-described invention, an oil pan is disposed on the lower side of the transport rail so as to straddle a plurality of machine tools. It is preferably provided separately from the machine, and the oil pan is preferably provided with an open / close door that communicates with the machine tool and can be opened and closed.

  Furthermore, the machine tool of the present invention includes a spindle stock that can be rotated by attaching a tool for machining the workpiece, a moving means for moving the spindle stock in an XY direction parallel to a predetermined plane, A workpiece holding section capable of holding the workpiece during machining, and the workpiece holding section is moved between the workpiece machining position and the retracted position along the Z direction that intersects a predetermined plane and is in contact with or separated from the headstock. An approach / separation driving means for moving the tool holder, a tool holder that is positioned on the upper side separated from the headstock in the Z direction and holds a plurality or a single tool, and an upper side that is separated from the retracted position in the Z direction. A loader passage for positioning a conveying means for supplying the workpiece to the workpiece holding portion or for taking out the workpiece from the workpiece holding portion at a position separated from the tool holder along the Z direction. It is preferable to Bei.

  Further, according to another aspect of the machine tool of the present invention, the loader passage is provided in a casing cover that covers the headstock, the moving unit, the work holding unit, the contact / separation driving unit, and the tool holder while being isolated from the outside. It is preferable.

  According to the present invention, space efficiency can be improved and further miniaturization can be achieved in machine tools and production lines.

1 is a side view showing a configuration of a horizontal machining center according to an embodiment of the present invention. It is a side view which shows the state in which the loading apparatus was installed with respect to the horizontal type machining center of FIG. It is a front view which shows the structure of the horizontal type machining center of FIG. It is a top view which shows the partial structure of the horizontal type machining center of FIG. It is a side view which shows the typical structure of the horizontal type machining center of FIG. It is a top view which shows the structure of the production line which consists of a some horizontal machining center and the loading apparatus which connects them. It is a front view which shows the structure of the production line of FIG. It is a side view which shows the structure of a loading apparatus. It is a side view which shows the typical structure of the conventional horizontal machining center.

  Hereinafter, a horizontal machining center 10 as a machine tool and a production line 11 including the horizontal machining center 10 as a machine tool according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view of a horizontal machining center 10. FIG. 2 is a side view of the horizontal machining center 10 in which the loading device 100 is installed. FIG. 3 is a front view of the horizontal machining center 10. FIG. 4 is a partial plan view of the horizontal machining center 10. FIG. 5 is a schematic diagram of the horizontal machining center 10.

  The horizontal machining center 10 in the present embodiment includes a bed 20, a moving column 30, a saddle 40, a tool magazine 60, a work holding unit 70, a housing cover, and a loading device 100 as main components. Yes.

  The bed 20 is provided with components such as a moving column 30 that are movable or fixed. Further, the movable column 30 is movable in the X-axis direction (direction perpendicular to the Y-axis and the Z-axis) in FIG. The moving column 30 is moved along the X axis by being screw-fed by forward and reverse rotation of the rotating shaft 31. The rotary shaft 31 is rotated in the forward and reverse directions by an X-axis drive motor 32 (corresponding to a part of the moving means) (see FIG. 4). The XY plane corresponds to a predetermined plane in the claims.

  Further, the saddle 40 is provided so as to be movable with respect to the moving column 30, and its moving direction is the Y direction. The saddle 40 is moved along the Y axis by being screw-fed by forward and reverse rotations of a rotating shaft 41 attached to the moving column 30. The rotary shaft 41 is rotated in the forward and reverse directions by a Y-axis drive motor 42 (corresponding to a part of the moving means).

  The saddle 40 is attached with a head stock 50 and supports the head stock 50 rotatably. A rotation shaft (not shown) is disposed inside the saddle 40, and one end side of the rotation shaft is connected to the main shaft base 50, and the other end side of the rotation shaft is connected to the main shaft drive motor 51. ing. Therefore, when the spindle drive motor 51 is driven, the spindle stock 50 is rotated. Further, in the present embodiment, the saddle 40 is configured not to have a quill that moves in the Z direction. For this reason, there are no configurations such as a guide mechanism for sliding the quill in the Z direction and a motor for applying a driving force for sliding the quill in the Z direction along the guide mechanism, which existed in the conventional configuration. It has become.

  The tool magazine 60 includes a tool holding plate 61 and a rotation motor 62. The tool holding plate 61 is provided with a number of tool holding portions 61a (see FIG. 3) on the outer peripheral side thereof. In this case, the tool T for cutting the workpiece W can be held. The rotation motor 62 is a motor for rotating the tool holding plate 61.

  The tool magazine 60 is provided with a cover 63 so as to cover the entire surface or the lower side of the tool magazine 60. The cover 63 has an opening 63a through which the tool T can pass, and a shutter 64 that can be opened and closed is provided in the opening 63a. Further, an exchange arm 65 is provided in the vicinity of the opening 63a, and when the tool T is exchanged, the shutter 64 is opened and the exchange arm 65 is operated (rotated in FIG. 3). Thereby, the tool T is exchanged.

  Moreover, the workpiece holding unit 70 is a portion where the workpiece W to be processed is installed. The work holding unit 70 includes a jig 71 that holds the work W, and also includes a mounting table 72 to which the jig 71 is attached.

  Further, the work holding unit 70 is moved along the Z-axis direction by the moving mechanism 80. The moving mechanism 80 corresponds to contact / separation driving means, and includes a Z-axis driving motor 81, a rotating shaft 82 (see FIG. 5), a guide rail 83 (see FIG. 5), and a cover 84. The Z-axis drive motor 81 provides a driving force for rotating the rotary shaft 82 in the forward and reverse directions. The rotating shaft 82 is connected to the output shaft of the Z-axis drive motor 81. The rotating shaft 82 is formed with a screw groove, and a screw engaging portion (not shown) provided on the mounting table 72 is engaged with the screw groove. Therefore, when the rotation shaft 82 rotates, the work holding unit 70 slides along the Z axis.

  Further, the guide rail 83 is for guiding the slide of the work holding unit 70 along the Z-axis direction. This guide rail 83 is comprised from a pair of elongate member attached to the bed 20, for example, The workpiece holding part 70 can move along the elongate member. The form of the guide rail 83 may be any form as long as the work holder 70 can be moved along the Z direction. The cover 84 is for preventing chips and cutting oil generated during the processing of the workpiece W from adhering to the components such as the rotating shaft, and covers the components such as the rotating shaft 82 and the guide rail 83. Is provided. This cover 84 is comprised from the some housing comprised by bending a plate-shaped member. These are provided so that the size of the housing gradually increases so that the adjacent housings can be accommodated inside.

  The housing cover 90 covers the work area when machining the workpiece W and the workpiece holding portion 70 so as to be isolated from the outside, and prevents chips, cutting oil, and the like from scattering outside. is there.

  A loader passage 91 is provided on the upper surface side of the housing cover 90. The loader passage 91 is a portion where the loading device 100 is installed. The loader passage 91 is provided to be lower in height than other portions of the upper surface portion. That is, the loader passage 91 is provided lower than the other portions of the upper surface portion so that the chucking portion 112 of the loading apparatus 100 can easily carry the workpiece W into or out of the workpiece holder. In particular, in the present embodiment, the bottom surface of the loader passage 91 is provided below the middle between the upper surface portion and the upper surface of the jig. Further, the bottom surface of the loader passage 91 is provided below the lower end A of the tool holding plate 61 (see FIG. 1). By forming in this way, the dimensions of the horizontal machining center 10 (machine tool) in the Z-axis direction can be reduced, and the bottom of the loader passage 91 is lowered to the extent that the horizontal machining center 10 (machine tool) can be reduced. The dimension in the Y-axis direction on the surface side can also be reduced.

  Here, the loader passage 91 is provided with an open front side in the Z-axis direction. That is, as a member constituting the loader passage 91, there is no wall surface or the like on the front side thereof, and when the loading device 100 is attached from the front side, the loader passage 91 is obstructed by the loading device 100. It is provided with nothing.

  As shown in FIG. 6, an opening / closing door 91 a is provided on the bottom surface of the loader passage 91. The open / close door 91a is provided so as to be openable / closable by, for example, a sliding method. The opening / closing door 91a is opened when the work W is carried in or out, and allows the chucking portion 112 to enter the inside of the housing cover 90. On the other hand, when processing the workpiece W, the open / close door 91a is in a closed state to prevent chips, cutting oil, and the like from being scattered outside.

<About loading equipment and production line>
Hereinafter, the loading device 100 and the production line 11 will be described with reference to FIGS. The production line 11 is composed of a plurality of horizontal machining centers 10 and a loading device 100 as a conveying means for connecting them.

  As shown in FIG. 7, the loading device 100 has a plurality of support columns 101 arranged at a predetermined pitch along the X-axis direction. A transport rail 102 is attached to the support column 101, and a moving unit 110 that moves along the transport rail 102 is attached to the transport rail 102. In addition, the loading apparatus 100 is provided with an oil pan 103 for receiving cutting oil and chips dripping when the moving unit 110 transports the workpiece W along the transport rail 102.

  When the oil pan 103 is viewed along the X-axis direction, when the cutting oil drops from the workpiece W and adheres to the oil pan 103, the cutting oil is inside the housing cover 90 when the door 91a is opened and closed. There is a gentle slope toward the. The oil pan 103 is also provided with an opening / closing door (not shown) similar to the opening / closing door 91a, and can be opened when the workpiece W is loaded / unloaded.

  The moving unit 110 described above has a cylinder 111, and a chucking portion 112 for holding the workpiece W is attached to the lower end of the cylinder 111. Therefore, when the cylinder 111 is operated, the chucking portion 112 is configured to move up and down. The moving unit 110 includes a scanning motor 113. The driving unit 110 can move along the transport rail 102 by driving the scanning motor 113.

  Further, the above-described transport rail 102 is provided so as to be movable in the vertical direction with the moving unit 110 attached. That is, an actuator such as a hydraulic jack (not shown) or a motor is provided at a portion of the transport rail 102 that is attached to the support 101, and the operation of the actuator causes the transport rail 102 and the moving unit 110 to move to the support 101. It is provided so as to be movable in the up and down direction (Y direction). In addition, an actuator (not shown) such as a motor is provided in a portion of the moving unit 110 attached to the transport rail 102, and the operation of the actuator causes the moving unit 110 to move along the transport rail 102 along the X axis. It can move in the direction.

  A configuration in which a mechanism for moving the transport rail 102 and the moving unit 110 in the vertical direction (Y direction) by the operation of the actuator described above may be employed. Further, the mechanism for moving the transport rail 102 and the moving unit 110 in the vertical direction (Y direction) may be realized by manually rotating the ball screw without being moved by the actuator.

  A plurality of the horizontal machining centers 10 as described above are arranged, for example, along the X-axis direction, and the above-described loading device 100 is arranged along the X-axis direction so as to convey the workpiece W to the plurality of horizontal machining centers 10. Thus, the production line 11 as shown in FIGS. 6 and 7 is configured. Here, when the moving unit 110 is positioned above the loader passage 91 and the actuator is operated to lower the moving unit 110 from that state, the moving unit 110 can be positioned in the loader passage 91. It has become.

  Further, the horizontal machining center 10 may have a configuration other than that described above. A typical example is a control unit that controls the driving of various motors / actuators including the X-axis drive motor 32, the Y-axis drive motor 42, the main shaft drive motor 51, the rotation motor 62, the Z-axis drive motor 81, and the like. Can be mentioned.

<About operation>
The operation when the workpiece W is machined using the horizontal machining center 10 having the above configuration will be described below.

  First, by adjusting an actuator (not shown), the positions of the transport rail 102 and the moving unit 110 in the height direction (Y-axis direction) are adjusted. As a result of this adjustment, the oil receiver 103 is positioned inside the loader passage 91.

  When the loading device 100 is operated and the chucking portion 112 of the moving unit grips a new workpiece W, the moving unit 110 is driven by the scanning motor 113 to move the X axis of the horizontal machining center 10 to be processed next. Move to a position in the direction. When the moving unit 110 reaches the target position in the X-axis direction, the moving unit 110 reaches the portion of the loader passage 91 in the horizontal machining center 10 to be processed next.

  The opening / closing door 91a of the housing cover 90 is opened before and after the movement unit 110 reaches the target position on the X axis. Thereafter, the cylinder 111 is operated and the chucking portion 112 is lowered. Accordingly, the chucking portion 112 and the workpiece W held by the chucking portion 112 are caused to enter the inside of the housing cover 90, and finally the workpiece W is placed on the jig 71. The workpiece W is attached and fixed by the jig 71.

  After the workpiece W is placed on the jig 71, the cylinder 111 is driven so that the chucking portion 112 is positioned in the loader passage 91 above the housing cover 90, and then opened and closed. The door 91a is closed.

  Thereafter, the workpiece W is processed. In this machining, the Z-axis drive motor 81 is operated, and the workpiece holding unit 70 approaches the workpiece machining position (position where the tool T exists) from the retracted position (position on the left side of the workpiece machining position in FIG. 1). Thus, it is moved along the Z-axis direction. Further, the spindle head 50 and the tool T are rotated by driving the spindle driving motor 51, and the X axis driving motor 32 and / or the Y axis driving motor 42 are driven to move the tool T in the X axis direction and the Y axis direction. Is located at an appropriate position. When the tool T comes into contact with the workpiece W, the workpiece W is cut.

  During the cutting process, the X-axis drive motor 32, the Y-axis drive motor 42, and / or the Z-axis drive motor 81 are driven so that the workpiece W is positioned at an appropriate position with respect to the tool T. To be controlled. Further, as apparent from the above description, the tool T cannot move in the Z-axis direction, and instead, the workpiece W moves in the Z-axis direction. Thereby, it is possible to perform cutting of the workpiece W in the three axes of XYZ.

  As described above, when the cutting process on the workpiece W is completed, the Z-axis drive motor 81 operates. Thereby, the workpiece holding unit 70 is moved away from the tool T and moved along the Z-axis direction to the retracted position. When the work holding unit 70 reaches the retracted position, the open / close door 91a is opened, and after opening, the cylinder 111 is operated and the chucking unit 112 is lowered. Then, the chucking unit 112 grips the workpiece W, and after the gripping, the chucking unit 112 is moved up by the operation of the cylinder 111 to move the workpiece W upward. Thereafter, the scanning motor 113 is operated to move the moving unit 110 along the transport rail 102 (X axis), and the work W is transported to the horizontal machining center 10 where the next processing is performed. In addition, a new workpiece W is sent to the horizontal machining center 10 where the above-described processing has been performed, and the next workpiece W is processed.

<Effect>
According to the horizontal machining center 10 and the production line 11 having such a configuration, the work holding unit 70 can be moved along the Z-axis direction by the moving mechanism 80. Therefore, when machining the workpiece W, the workpiece holding unit 70 can be moved to the workpiece machining position. As a result, an empty space can be formed above the retreat position of the work holding unit 70, and a loader passage 91 can be provided in the space-free portion.

  With this configuration, when the horizontal machining center 10 is viewed from the side, the dimension in the Z-axis direction can be reduced as compared with the configuration of the conventional example shown in FIG. In particular, as can be seen from a comparison between FIG. 5 and FIG. 9, in the horizontal machining center 10 of the present embodiment, when the external configuration of a part required for processing the workpiece W is viewed from the side, the shape is substantially a square shape. Therefore, the space saving of the horizontal machining center 10 can be achieved, and consequently the space of the production line 11 can be saved.

  In particular, in the horizontal machining center 10 according to the present embodiment, a loader passage 91 is provided in the housing cover 90, and the upper surface side and the front surface side of the housing cover 90 (in FIG. The left side surface and the upper surface portion) are recessed so as to be directed inward of the housing cover 90. For this reason, when the external configuration of the part required for machining the workpiece of the horizontal machining center 10 is viewed from the side, the shape becomes a substantially square shape, and the space saving of the horizontal machining center 10 can be achieved.

  Here, if the loading device is simply stored in the horizontal machining center, a space for storing the loading device is provided inside the horizontal machining center, and the horizontal machining center becomes very large. When a production line is constructed by arranging a plurality of such large horizontal machining centers, a large amount of space is required. However, in the present embodiment, as described above, since the space saving of the horizontal machining center 10 is achieved, the space occupied by the production line 11 can be reduced.

  In addition, the loading device 100 can be disposed immediately above the work holding unit 70. As described above, by placing the loading device 100 immediately above the work holding unit 70, the height position of the loading device 100 can be relatively lowered. In addition, by disposing the loading device 100 immediately above the workpiece holding unit 70, it is possible to reduce the time required for loading and unloading the workpiece W. Thereby, in the production line 11, it becomes possible to improve productivity.

  Further, in the present embodiment, the loading apparatus 100 includes the transport rail 102 straddling the plurality of horizontal machining centers 10, but the loading apparatus 100 can be provided at a relatively low position. It is possible to improve the accessibility to the, and the maintenance becomes easy.

  Further, in the present embodiment, since the oil receiver 103 is provided independently of the horizontal machining center 10, it is not necessary to provide a collection device for collecting cutting oil and chips in the horizontal machining center 10. . Therefore, space saving of the horizontal machining center 10 can be realized.

<Modification>
The horizontal machining center 10 and the production line according to the embodiment of the present invention have been described above, but the present invention can be variously modified in addition to this. This will be described below.

  In the above-described embodiment, the horizontal machining center 10 as a machine tool and the production line 11 including the machining center 10 are described. However, the machine tool and the production line of the present invention are not limited to the horizontal machining center 10 and / or the production line 11.

  That is, the machine tool of the present invention preferably has a headstock that can be rotated by attaching a tool for machining a workpiece, as a first constituent element. Moreover, it is preferable that the machine tool of this invention has a moving means for moving a headstock to the XY direction parallel to a predetermined plane as 2nd component requirements. Furthermore, it is preferable that the machine tool of the present invention has a work holding part capable of holding the work when the work is processed, as a third constituent element. The machine tool of the present invention has a fourth constituent feature that the work holding portion moves between the work machining position and the retreat position along the Z direction that intersects a predetermined plane and is close to and away from the headstock. It is preferable to have contact / separation drive means for making it happen. Moreover, it is preferable that the machine tool of this invention has a tool holder which hold | maintains a multiple or single tool as a 5th component as it is located in the upper side spaced apart from a Z direction with respect to a headstock. . The machine tool of the present invention has a sixth constituent feature in which a workpiece is placed on the workpiece holding portion at an upper side separated from the retracted position from the Z direction and separated from the tool holder along the Z direction. It is preferable to have a loader passage for positioning a conveying means for supplying or taking out the workpiece from the workpiece holding section.

  And what has all the above-mentioned 1st constituent requirements to the 6th constituent requirements, even if various changes are added to the horizontal machining center 10 as a machine tool explained in the above-mentioned embodiment, May be true.

  In addition, as another invention of the machine tool, it is also possible to adopt the present invention that does not include the loader passage that is the above-described sixth constituent element. In the case where the loader passage is not provided, for example, to position the transport means for supplying the workpiece to the workpiece holding portion or for taking out the workpiece from the workpiece holding portion at a position spaced along the Z direction with respect to the retracted position. It is preferable to have a loader passage or an opening / closing door.

  Moreover, it is preferable that the production line of this invention has the headstock which can attach and rotate the tool which processes a workpiece | work as 1st component requirements. Moreover, it is preferable that the production line of this invention has a moving means for moving a headstock to the XY direction parallel to a predetermined plane as 2nd component requirements. Moreover, it is preferable that the production line of this invention has a workpiece | work holding | maintenance part which can hold | maintain the said workpiece | work at the time of a workpiece | work processing as 3rd component requirements. Moreover, the production line of this invention moves a workpiece holding part between a workpiece processing position and a retracted position along the Z direction which cross | intersects a predetermined plane and contacts / separates to a headstock as 4th component requirements. It is preferable to have contact / separation drive means for making it happen. In addition, the production line of the present invention preferably has a tool holder that is located on the upper side spaced apart from the Z-axis with respect to the headstock and holds a plurality or a single tool as a fifth constituent. . Moreover, the production line of the present invention has, as a sixth component, a loader passage that exists on the upper side separated from the retracted position from the Z direction and separated from the tool holder along the Z direction, It is preferable to have a machine tool provided with. In addition, the production line of the present invention preferably supplies a workpiece to the workpiece holding unit as a seventh constituent element, and preferably has a conveying unit for taking out the workpiece from the workpiece holding unit. It is preferable to have a transport rail that straddles a plurality of machine tools, and a moving unit that has a chucking portion that grips a workpiece and is provided so as to be movable along the transport rail.

  And what has all the above-mentioned 1st constituent requirements to the 7th constituent requirements can fall under the present invention even if various changes are made to the production line 11 explained in the above-mentioned embodiment.

  In the above-described embodiment, the horizontal machining center 10 as a machine tool is described. However, the machine tool is not limited to the horizontal machining center 10, and the present invention may be applied to, for example, a milling machine or a free-form surface grinding machine in which the tool magazine 60 does not exist. In the above-described embodiment, the horizontal machining center 10 capable of performing three-axis machining has been described. However, it is also possible to perform machining of four or more axes by adding various rotational directions.

  In the embodiment described above, the production line 11 has a plurality of horizontal machining centers 10. However, all of the machine tools constituting the production line 11 may be configured from the horizontal machining center 10, but may be configured to include machine tools other than the horizontal machining center 10. Further, the number of the horizontal machining centers 10 in the production line 11 may be any number. Further, the conveyance rail 102 may be formed so as to draw a curve. In this case, the machine tool such as the horizontal machining center 10 may be arranged according to the curve of the conveyance rail 102. That is, the machine tool need not be arranged along the X-axis direction.

  Moreover, although the production line 11 provided with the oil pan 103 is described in the present embodiment, a configuration in which the oil pan 103 is omitted may be employed.

  In the above-described embodiment, the number of moving units 110 may be one or two or more.

  In the above-described embodiment, the XY plane orthogonal to the Z direction corresponds to the predetermined plane in the claims. However, even if the XY plane is not orthogonal to the Z direction, Any plane that intersects may be an XY plane.

  The machine tool and production line of the present invention can be used in various manufacturing fields.

DESCRIPTION OF SYMBOLS 10 ... Horizontal machining center 11 ... Production line 20 ... Bed 30 ... Moving column 31, 41 ... Rotating shaft 32 ... X-axis drive motor 40 ... Saddle 42 ... Y-axis drive motor 50 ... Spindle base 51 ... Spindle drive motor 60 ... Tool magazine 61 ... Tool holder (supports tool holder)
62 ... Rotary motor 70 ... Work holding part 71 ... Jig 72 ... Place 80 ... Moving mechanism (corresponding to contact / separation driving means)
DESCRIPTION OF SYMBOLS 81 ... Z-axis drive motor 82 ... Rotating shaft 83 ... Guide rail 84 ... Cover 90 ... Case cover 91 ... Passage for loaders 91a ... Opening / closing door 100 ... Loading device (corresponding to conveying means)
DESCRIPTION OF SYMBOLS 101 ... Prop. 102 ... Conveying rail 103 ... Oil pan 110 ... Moving unit 111 ... Cylinder 112 ... Chucking part 113 ... Scanning motor T ... Tool W ... Workpiece

Claims (4)

A headstock capable of attaching and rotating a tool for machining a workpiece,
Moving means for moving the headstock in an XY direction parallel to a predetermined plane;
A workpiece holding section capable of holding the workpiece when machining the workpiece;
Contact / separation driving means for moving the workpiece holding portion between a workpiece machining position and a retracted position along a Z direction intersecting the predetermined plane and contacting / separating from the headstock;
A tool holder that is located on the upper side away from the Z direction with respect to the headstock and holds a plurality of or a single tool;
A loader passage that exists on the upper side away from the Z direction with respect to the retracted position and that is located at a site separated from the tool holder along the Z direction;
A machine tool comprising:
In addition to supplying the workpiece to the workpiece holding unit, the conveyance unit for taking out the workpiece from the workpiece holding unit,
The transport means includes a transport rail straddling a plurality of the machine tools, and a moving unit that has a chucking portion that grips the workpiece and is provided so as to be movable along the transport rail.
Production line characterized by that. In the production line according to claim 1,
On the lower side of the transport rail, an oil pan is disposed in a state of straddling the plurality of machine tools, and the oil pan is provided separately from the machine tool. An openable / closable door is provided which communicates with the machine tool and can be opened and closed.
Production line characterized by that. A headstock capable of attaching and rotating a tool for machining a workpiece,
Moving means for moving the headstock in an XY direction parallel to a predetermined plane;
A workpiece holding section capable of holding the workpiece when machining the workpiece;
Contact / separation driving means for moving the workpiece holding portion between a workpiece machining position and a retracted position along a Z direction intersecting the predetermined plane and contacting / separating from the headstock;
A tool holder that is located on the upper side away from the Z direction with respect to the headstock and holds a plurality of or a single tool;
The workpiece is supplied to the workpiece holding portion at a position separated from the tool holder along the Z direction on the upper side that is separated from the retracted position from the Z direction, or from the workpiece holding portion. A loader passage for positioning a conveying means for taking out a workpiece;
A machine tool comprising: The machine tool according to claim 3,
The loader passage is provided in a housing cover that covers the headstock, the moving unit, the work holding unit, the contact / separation driving unit, and the tool holder in a state of being isolated from the outside.
A machine tool characterized by that.

Images