JP5554492B2 - Composite machine tool and workpiece machining method - Google Patents

Description

  The present invention relates to a multi-tasking machine tool having a lathe function and a machining center function, and can use more types of rotary tools than conventional multi-function lathes, and can be used for plane machining, grooving and drilling. The present invention relates to a machine tool that has a greater machining capability than machining and that can also machine surfaces inclined about two orthogonal axes that are impossible with a normal machining center.

  In the following description, the operator side (the front side in FIGS. 1 and 2 and the left side in FIGS. 3 and 4) is operated as the front, the opposite side is the rear, the left side as viewed from the operator is left, and the right side is the right. .

  A two-spindle opposed composite lathe capable of performing grooving and drilling on a workpiece using a drill, an end mill, or the like is known. In Patent Document 1 relating to the application of the present applicant, the first direction (Z-axis of the lathe) parallel to the workpiece spindle, the cutting feed direction (X-axis of the lathe) of the tool orthogonal to the workpiece spindle, and the direction orthogonal thereto. A two-spindle opposed type composite lathe is described in which a tool spindle that can be rotated around an axis in the third direction (B-axis) is provided on a tool post that can move in three directions orthogonal to the third (Y-axis of the lathe). ing. This compound lathe is equipped with one tool magazine and a tool changer (hereinafter referred to as “ATC” together), so that the tool attached to the tool spindle can be changed during the machining of the workpiece. .

  This two-spindle opposed composite lathe is provided with a slant type bed having a bed upper surface inclined in a direction in which the operator side is downward. Therefore, the Z-axis is horizontal, and the X-axis and Y-axis are obliquely up and down. is there.

  The two-spindle opposed composite lathe includes two spindles (a left spindle and a right spindle) that rotate independently with the workpiece gripping ends opposed to both sides of the spindle axis in the left-right direction as viewed from the operator. The left spindle and the right spindle can each hold a workpiece individually, and two workpieces processed by different operations can be mounted simultaneously. The tool spindle has a large movement stroke in the left-right (first) direction so that both of the two workpieces can be machined.

  That is, the two-spindle opposed composite lathe described in Patent Document 1 includes one tool spindle that can alternately process two workpieces loaded in the machine, and the tool of this one tool spindle is changed. One ATC is provided. The relative movement direction between the workpiece and the tool spindle is the movement in the three orthogonal directions of the first, second and third directions (the lathe Z, X and Y axes) and the axis in the first direction by the spindle rotation. (C axis) rotation and turning around the axis in the third direction of the tool spindle.

  On the other hand, Patent Document 2 includes a plurality (two in the embodiment) of tool spindles that move independently in the three orthogonal directions of left and right, front and rear, and top and bottom when viewed from the operator, and each tool spindle is provided with a tool. A machining center with a spindle is described. This machining center includes a plurality of tool magazines corresponding to a plurality of (two in the embodiment) tool spindles. In the embodiment, tool magazines are respectively arranged on both sides of the movement area of the tool spindle in the left-right direction so as to correspond to the two tool spindles arranged on the left and right as viewed from the operator.

The machining center is provided with one work table that rotates around the vertical axis (Y axis of the machining center) (B axis) on the front side when viewed from the operator of the two tool spindles. That is, the machine center of Patent Document 2 includes two tool spindles that simultaneously or alternately process one workpiece, and includes an ATC corresponding to each tool spindle. The relative movement direction of the workpiece of the machining center and the tool spindle is determined by the three-axis movement in the left / right, front / rear and up / down (X, Y, Z axes of the machining center) as viewed from the operator, B axis) turning.
Japanese Patent No. 399936 JP 2008-110463 A

  In the above-mentioned two-spindle opposed compound lathe, when machining a left spindle work and a right spindle work with a tool mounted on the tool spindle, the Z axis, Y axis, B axis, and C of the lathe for each spindle If the positive and negative directions in the movement or turning of the shaft are set in the opposite direction, machining with the same shape can be performed with the same machining program. However, in the above-described two-spindle facing lathe, when such setting is performed, the positive and negative directions are reversed only when the tool is changed, and a program error is likely to occur.

  Further, in the above-mentioned two-spindle opposed composite lathe, it is difficult to increase the movement stroke of the tool spindle in the Y-axis direction because the X-axis and Y-axis are inclined, and the tool spindle platform on which the tool spindle is mounted Since it is difficult to increase the size of the tool, it is impossible to load a large rotary tool on the tool spindle, and there is a problem that machining of a wide plane or heavy cutting by the rotary tool is limited.

  The machining center having the above structure includes two tool spindles. However, since there is only one table for fixing the workpiece, the two workpieces cannot be machined in parallel. For example, even if two workpieces are mounted on the table, turning around the vertical axis of the table (the B axis of the machining center) changes the angle of the two workpieces at the same time. It is difficult to process. Further, it is impossible to turn a plurality of workpieces mounted on the table by rotating the table.

  This invention has the functions of both a lathe and a machining center, enabling high-efficiency turning with a cutting tool, machining of a large flat surface with a large rotary tool, and heavy cutting, as well as workpiece rotation and tool head stock rotation. The present invention provides a machine tool capable of machining a surface and a hole at an arbitrary angle around an axis in two orthogonal directions. Furthermore, the present invention makes it easy to create a machining program that includes tool change for two workpieces, and can machine two workpieces with different machining shapes in parallel, between two workpiece spindles. It is an object of the present invention to provide a machine tool that enables continuous machining of all parts including a fixed part of the work to the machine on the same machine base by delivering the work.

This invention has a structure similar to that of a conventional single-head machining center, and its movement position is controlled in three axial directions orthogonal to each other. Further, the operator can swivel around an axis (the third direction, Y axis) that is the front-rear direction. Thus, a tool spindle 51 that rotates about an axis parallel to a plane orthogonal to the axis in the third direction is provided, and a structure similar to that of a conventional two-spindle facing lathe is provided as a work holding portion disposed below the tool spindle. That is, two work spindles 61L and 61R having opposite ends as workpiece gripping ends are arranged on the same horizontal axis so that at least one of them is opposed to the other so as to be close to and away from each other, and the workpiece axis At least one turret tool post 8 is disposed below the two tool spindles 61L and 61R on both sides of the one tool spindle 51. Two tool magazine 71L to accommodate the tool to be attached to the shaft, 71R and two tool changers 72L, by providing a composite machine tool arranged and 72R, and the above-mentioned problems are eliminated.

That is, the compound machine tool according to the invention of claim 1 of the present application includes one tool spindle 51, two tool magazines 71L and 71R for housing tools to be mounted on the tool spindle, and each tool magazine. a tool changing equipment for changing tools between said tool spindle 51, two workpiece spindle 61L, includes a 61R, and a turret tool rest 8, wherein the tool spindle is moved and positioned in a first direction in the horizontal direction The first moving table 2 is moved, the second moving table 4 is moved and positioned in the second direction orthogonal to the first and the downward direction is the cutting direction of the tool with respect to the workpiece, and moved in the third direction orthogonal to both the directions. It is pivotally supported downward in parallel with a plane including the first direction and the second direction via the third movable table 3 to be positioned and the tool head table 5 which is pivotally positioned around the axis in the third direction. Two of the tool changers The tool changer and the tool magazines 71L and 71R are arranged on both sides in the first direction of the moving region of the tool head stock 5, and exchange of the tools accommodated in the tool magazines on each side is provided. Is performed by moving the tool spindle stock to a tool change position provided on each side of the movement region in the first direction, and the two workpiece spindles 61L and 61R have at least one of them relative to the other. The turret tool post 8 is pivotally supported in the first direction with the tool gripping ends facing each other on the same axis line below each of the two tool magazines. This is a multi-tasking machine tool provided with the indexing axis b of the tool turret 81 in the first direction below the second direction of the axis on which the work spindles 61L and 61R are provided. The second direction is preferably a vertical direction, whereby the support rigidity of the large tool spindle 51 can be increased, and a rational arrangement of the tool magazine and the tool changer can be realized, and the processing chamber 18 is partitioned. The structure of the shielding cover can be simplified.

  The compound machine tool having the above structure is equipped with a tool spindle moving mechanism in the three orthogonal directions similar to that of a conventional machining center, and therefore has a large rotary tool, a tool spindle 51 for driving the tool strongly, and a tool drive motor. it can. Further, in the composite machine tool of the present invention, the work spindles 61L and 61R are configured such that the tool spindle 51 can be turned around the longitudinal axis as viewed from the operator, and the work is rotationally positioned around the left and right axes as seen from the operator. Therefore, the relative positional relationship between the workpiece and the tool spindle can be set around two axes orthogonal to each other. In a conventional general machining center, the workpiece must be mounted on the table via an index table. Processing that could not be processed becomes possible.

  Furthermore, the composite machine tool according to the present invention is provided with the tool magazines 71L and 71R for storing the tools to be mounted on one tool spindle 51 in the upper part of the two workpiece spindles 61L and 61R. By storing the tools used for processing the workpiece gripped by the spindles 61L and 61R in the tool magazines 71L and 71R arranged on the respective sides, the moving distance of the tool spindle 51 at the time of tool change is shortened, and the tool change time is reduced. It can be shortened and it becomes easy to create a machining program for each work spindle 61L, 61R including tool change. Furthermore, while the tool spindle 51 is machining one of the workpieces held by the two workpiece spindles 61L and 61R, the tool accommodated in the tool magazine on the other workpiece side can be replaced or maintained.

  In machine tools that perform metal processing, chips with high heat and high hardness are generated during processing. In order to absorb the processing heat and improve the processing speed, processing is performed while supplying processing liquids containing various chemical components. A cover that shields the machining chamber 18 and the machine chamber 17 is provided so that chips and machining fluid scattered from the machining section do not damage the movement mechanism of the tool head stock 5 or impede its operation.

In the machine tool of the present invention that moves the tool spindle 51 in the first direction with a large stroke, the cover 16 that shields the machining chamber 18 and the machine chamber 17 on the tool spindle side also has a large extension stroke in the first direction. Even if a slide structure or a bellows structure is adopted, the number of components increases and the structure becomes complicated. In the invention of claim 2 , the ATC is disposed on the machining chamber 18 side of the cover 16 that shields the machining chamber 18 and the machine chamber 17 on the tool spindle side, whereby the machining chamber 18 and the tool spindle side are covered with a simple structure. The machine room 17 can be shielded.

That is, support members 15 extending inward in the left-right direction and toward the front side from support columns 13 erected on both left and right ends of the base 1 are provided, and left and right side portions of the cover 16 that shields the machining chamber 18 and the machine chamber 17 on the tool spindle side are provided. The ATC 7L and 7R including the tool magazines 71L and 71R and the tool changers 72L and 72R are attached to the support member 15 and the machining chamber 18 and the machine chamber 17 on the tool spindle side are placed on the support member 15. A simple structure of the cover 16 to be shielded and a large movement stroke of the tool spindle 51 in the first direction are ensured.

The composite machine tool according to claim 2 of the present application is a tool spindle side machine that houses a region in which the tool spindle 51 processes a workpiece, and a mechanism including a guide and a feed mechanism of the first to third moving tables. A shielding cover 16 that shields the chamber, and the shielding cover is formed in one plane including a plurality of extendable covers 24, 24, 46D, 46U arranged in a plane, and the tool magazine and the tool changer include: It is arranged on the processing chamber side of the shielding cover.

Further, the composite machine tool according to the invention of claim 3 of the present application is provided with support columns 13 erected on both ends of the machine base 1 in the first direction, and the shielding cover is provided between the support columns on both sides. The tool spindle is provided on the front surface of the front and rear cylindrical body 45 penetrating the shielding cover 16 in the third direction, and the two tool magazines extend from the respective columns to the processing chamber side. And is arranged on the near side as viewed from the operator of the shielding cover.

A workpiece machining method in the composite machine tool according to the invention of claim 4 of this application is a tool for machining a workpiece gripped by the left workpiece spindle 61L in the left tool magazine 71L of the composite machine tool according to the invention of the present application. , A tool for machining a workpiece gripped by the right workpiece spindle 61R in the right tool magazine 71R, and a series of machining operations including tool exchange for each workpiece are alternately performed. It is the processing method of the workpiece in.

  In the composite machine tool of the present invention, a tool used for processing a work gripped by the left work spindle 61L is accommodated in the left tool magazine 71L, and a tool used for processing a work gripped by the right work spindle 61R is stored in the right tool magazine 71R. The left and right workpieces 67L and 67R can be processed. In a multi-tasking machine tool with two workpiece spindles, the machining method for preparing and selecting and using the tool used for machining the workpiece on the workpiece spindle side for each workpiece spindle makes it easier to understand process design and machining program creation. Design errors and program errors can be avoided. Further, the movement of the tool spindle 51 at the time of tool change is a reciprocating movement in a substantially vertical direction, and the movement distance is short, so that the movement time is shortened, and the time until the tool is changed and machining with a new tool can be shortened.

  Further, when the tool spindle 51 is machining a workpiece gripped by one workpiece spindle, the tool magazine and tools on the other workpiece spindle side can be maintained (for example, a broken tool can be replaced). There is an advantage that there is no need to stop.

  In the composite machine tool of the present invention, a tool used for machining the left workpiece spindle 61L is accommodated in the left tool magazine 71L, and a tool used for machining on the right workpiece spindle 61R side is accommodated in the right tool magazine 71R for machining. Basically, the number of tools accommodated in the left and right tool magazines 71L and 71R is sufficient to be able to perform this basic machining, but unexpected workpiece machining is required, and the machining If, for example, the left tool magazine 71L is not sufficiently accommodated and the right tool magazine 71R has sufficient capacity, the tools that could not be accommodated in the left tool magazine 71L are accommodated in the right tool magazine 71R for processing. Since it can also be performed, there is an advantage that it can flexibly cope with unexpected workpiece machining.

  The present invention will be further described below with reference to the drawings showing an example of a preferred embodiment of the present invention. In the figure, 1 is the machine base, 2 is the first moving table, 4 is the second moving table, 3 is the third moving table, 5 is the tool spindle table, 51 is the tool spindle, 61L is the left workpiece spindle, and 61R is the right Work spindles 71L and 71R are tool magazines, 72L and 72R are tool changers, and 8 is a turret tool post.

  In the following description, the horizontal direction is the horizontal direction as viewed from the operator operating the machine (the first direction, the horizontal direction in FIG. 1), and the front-rear direction is the horizontal direction as viewed from the operator (see above). 3, the left and right directions in FIG. 3 are on the left side, and the vertical direction is the vertical direction (corresponding to the second direction). is there.

  The base 1 includes a base plate 11 and an apron 12 that is lower than the base plate 11 and positioned in front of the base plate 11. In the base 1, left and right support columns 13 are erected on both sides of the base plate 11, and an upper girder 14 that connects the upper ends of the left and right support columns is provided. A left and right guide 21 and a left and right feed screw 22 are disposed on the top of the base plate 11, and the first moving table 2 is guided by the left and right guide 21 and screwed into the left and right feed screw 22 to rotate the left and right feed screw 22. The servo motor 23 is mounted so that it can be moved and positioned in the left-right direction.

  A front / rear guide 31 and a front / rear feed screw (not shown) are arranged on the upper part of the left / right movable table 2, and the front / rear movable table 3 having a tall rectangular front as viewed from the front of the machine is attached to the front / rear guide 31. It is mounted so as to be movable and positionable in the front-rear direction by screwing with a front-rear feed screw that is guided and rotated by a servo motor 33.

  A vertical guide 41 and a vertical feed screw (not shown) are arranged on the front surface of the front / rear moving table 3, and the vertical movement table 4 is guided by the vertical guide 41 and rotated by a servo motor 43. It is mounted so that it can be moved and positioned in the vertical direction by being screwed onto the screw.

  The vertical moving table 4 is provided with a structure in which a rectangular tube-like support tube 45 that is short in the front-rear direction protrudes forward. A tool head stock 5 is mounted on the front surface of the support tube 45 so as to be rotatable about a longitudinal axis. The turning support mechanism and turning servo motor of the tool head stock 5 are provided in the support cylinder 45. A rotary tool shaft 51 is pivotally supported on the tool spindle base 5 with its tool grip end facing downward and in a direction perpendicular to the front-rear direction. A rotation drive mechanism for the tool spindle 51 is provided in the tool spindle stock 5.

An ATC support member 15 is fixed to the front surface of the column 13 erected on the left and right sides of the base 1. The support member 15 extends inward in the left-right direction on the front side of the support column 13 and extends forward from the inner end thereof. The tool magazines 71L and 71R and the tool changers 72L and 72R are attached to the extended portion. Has been. The left and right ATCs 7 </ b> L and 7 </ b> R are located in the upper part on both sides of the horizontal movement area of the tool spindle 51. The tool magazines 71L and 71R shown in the figure have a disk structure that rotates around a horizontal axis to select a tool, and is on the circumference of the outer surface (surface on the side opposite to the tool spindle) of the disk 73 that serves as a base. Are provided with a number of tool holding portions 74 for holding the tool in the left-right direction. Each tool holding part 74 is provided with the direction change mechanism which orient | assigns the direction of the tool hold | maintained in the position rotated to the lowest end to the downward direction.

  The tool changers 72L and 72R have hands 77 at both ends, the center of which is fixed to the vertical turning shaft 76, and the tool spindles 51 and the lower ends of the tool magazines 71L and 71R are turned by 180 degrees around the turning shaft. Replace the tool with the tool holder facing downward. At the time of tool change, the tool spindle 51 moves left or right and upward, positions the tool gripping end at the tool change position, and is attached to the tool spindle 51 with one hand of the tool change arm 75 that rotates 180 degrees. And hold the tool facing downward at the lower end of the tool magazine with the other hand, lower and pull out both tools, turn 180 degrees, raise and insert both tools to change the tool. Do.

  Between the left and right support columns 13 and the front / rear moving table 3, the lower part of each fixed edge (outer edge) and the lower part of the moving edge (inner edge) are fixed to a bracket (not shown) fixed to the left / right movable table 2. Then, left and right left and right telescopic covers 24, 24 are provided. Between the moving edges of the left and right left and right telescopic covers 24 and 24, a square frame 35 is mounted so that both side edges in the left and right direction are slidable vertically on the moving edges of the left and right left and right telescopic covers 24 and 24. ing. The aforementioned support cylinder 45 penetrates the square frame 35 so as to be slidable in the front-rear direction. Below the corner frame 35, there is provided a lower upper and lower extension cover 46D having a lower edge fixed to the moving edges of the left and right extension covers on both sides and an upper edge fixed to the corner frame 35. An upper and lower upper and lower extendable cover 46U is provided with an edge fixed to the moving edge of the left and right extendable covers on both sides and a lower edge fixed to the square frame 35.

  That is, the shielding cover 16 that shields the machining chamber 18 and the machine chamber 17 on the tool spindle side includes left and right left and right extendable covers 24 and 24 arranged in a plane between the pillars 13 on both sides, and a lower upper and lower extendable cover 46D. And the upper / lower upper / lower extendable cover 46U, and the tool head stock 5 can be swiveled around the front / rear direction axis on the front surface of the support cylinder 45 slidably passing through the square frame 35 supported by these extendable covers. It is attached to. The left and right telescopic covers 24 and 24 and the upper and lower upper and lower telescopic covers 46D and 46U have a structure composed of a plurality of slide plates or a bellows structure. As the support cylinder 45 moves in the left and right direction, The upper and lower upper and lower telescopic covers 46D and 46U expand and contract as the support cylinder 45 moves in the vertical direction. The support cylinder 45 moves in the front-rear direction by sliding between the square frame 35.

  That is, the shielding cover 16 that shields the machining chamber 18 and the machine chamber 17 on the tool spindle side is formed behind the support member 15 of the ATC 7L, 7R with the position in the front-rear direction as a fixed position. At the origin position of the longitudinal movement of the tool spindle 51, the square frame 35 is positioned at the center of the support cylinder 45 in the longitudinal direction, and the tool spindle 51 can move in the longitudinal direction by the length of the support cylinder 45.

  A workpiece axis a in the left-right direction is set at a position directly below the tool spindle 51 at the origin position of the longitudinal movement, and the left workpiece spindle 6L and the right workpiece spindle 6R are positioned below the ATCs 7L and 7R on both sides. Is arranged. The left work spindle 6L is fixed to the apron 12, and the right work spindle 6R is guided by the left and right spindle guide 63 and screwed to the spindle feed screw 64 in the same direction. A servo motor that rotationally drives the spindle feed screw 64 can be moved and positioned in the left-right direction.

  The work spindles 61L and 61R, which are driven to rotate by the spindle motors 65 and 65, can be rotated and positioned around the work axis a, and the workpiece gripping ends 66L and 66R are opposed to the left and right work spindles 6L and 6R. Is provided. A turret tool post 8 having a turret indexing shaft parallel to the work axis a is disposed at a position immediately below the workpiece axis a. That is, the axis of the tool spindle 51 located at the movement origin in the front-rear direction, the workpiece axis a, and the index rotation axis of the turret 81 are located in the same vertical plane.

  The turret tool post 8 is moved and positioned in the left and right and up and down directions by a structure similar to that in a conventional lathe, and the turret 81 is indexed and rotated around the indexing axis b to transfer the tool to be used to the workpiece axis a. Index to the side. The tool spindle 51 and the turret 81 are provided with a moving stroke in the left-right direction capable of machining the workpiece gripped by the left and right workpiece spindles 61L, 61R.

  Next, the machining operation of the tool spindle 51 will be described with reference to FIG. Assuming that machining of the workpiece is performed from the left workpiece spindle side, the tool spindle stock 5 first moves to the left and moves upward to be positioned at the tool change position of the left tool changer 72L. Then, the tool L1 to be used first is loaded on the tool spindle, and waits for the end of the previous process of the left workpiece spindle 61L (processing performed with the turret tool post and loading of the workpiece onto the left workpiece spindle).

  When the operation completion signal of the previous process is received during standby (without waiting if the machining completion signal has already been received), machining with the tool L1 is started, and machining of the left workpiece 67L is performed while changing the tool as necessary. I do. When a series of machining operations on the left workpiece 67L by the tool spindle 51 is completed, the tool Ln attached to the tool spindle 51 at that time is returned to the left tool magazine 71L, and a machining program to be performed next is read.

  If the read program is a machining program for the right workpiece 67R, first, the tool head stock 5 is moved to the right and moved upward to be positioned at the tool change position of the right tool changer 72R, and the tool R1 to be used first is received. . Then, after waiting for the operation completion signal of the previous process from the right workpiece spindle, when the operation completion signal is received, the machining with the tool R1 is performed, and the machining of the right workpiece 67R is performed while replacing the tool in a timely manner. When a series of machining for the right workpiece 67R is completed in this way, the tool Rn mounted at that time is returned to the right tool magazine 71R, and a machining program for the next process is read.

  By repeating the above operation, the tool spindle 51 moves between the left workpiece 67L and the right workpiece 67R, and processes the left and right workpieces while exchanging the tools in a timely manner. While the tool spindle 51 is machining one of the left and right workpieces, the other workpiece performs turning with the turret tool post 8. If the turret tool rest 8 is a tool rest capable of mounting a rotating tool having a small diameter, it is possible to perform machining such as screw holes on the turret tool rest 8 side together with turning.

  As can be understood from the machining procedure for the left and right workpieces by the single tool spindle 51, the composite machine tool of the present invention includes the tool magazine above the workpiece spindles on the left and right sides. , By storing the tool for machining the left workpiece in the left tool magazine and the tool for machining the right workpiece in the right tool magazine, the machining program including tool change for each workpiece is standardized and program errors are unlikely to occur. In addition, the moving distance of the tool head stock 5 at the time of a tool change operation performed during a series of processings can be shortened, and therefore the loss time at the time of tool change can be greatly reduced.

  In addition, when machining one workpiece, the tool magazine on the opposite side stops operating. During this time, replacement and maintenance of the tool loaded in the tool magazine on the other side is stopped as necessary. Can be performed without stopping the machine.

  In the multi-task machine tool of the present invention, it is basic that the tool for processing the workpiece on each side is accommodated in the tool magazine on each side, but there are many types of tools used on one workpiece, If the tool magazine on the opposite side has room, it can be stored in the tool magazine on the opposite side. It has the feature that it can also be used for machining.

Front view showing an example of the composite machine tool of the present invention with the cover omitted Front view with a shielding cover between the machining chamber and the machine room on the tool spindle side Side view of the compound machine tool of FIG. Side view with ATC, turret and right work headstock omitted Explanatory drawing of machining operation of tool spindle

Explanation of symbols

1 Machine base 2 1st moving table (left / right moving table)
3 Third platform (front / rear platform)
4 Second moving table (up and down moving table)
5 Tool headstock 8 Turret tool post
13 Prop
15 Support member
16 Shielding cover
24 Left and right extendable cover
45 cylinder
46D, 46U Vertical expansion / contraction cover
51 Tool spindle
61L, 61R Work spindle
71L, 71R Tool magazine
72L, 72R Tool changer
81 Tool turret

Claims (4)

One tool spindle (51), two tool magazines (71L, 71R) for storing tools to be mounted on the tool spindle, and a tool for exchanging tools between each tool magazine and the tool spindle with an exchange equipment, and two workpiece spindle (61L, 61R), the turret and (8),
The tool spindle is moved and positioned in a first moving table (2) that is moved and positioned in a first horizontal direction, and in a second direction that is perpendicular to the first and that has a downward direction as a cutting direction of the tool with respect to the workpiece. Via a second moving table (4), a third moving table (3) that is moved and positioned in a third direction orthogonal to these two directions, and a tool spindle table (5) that is swiveled and positioned around the axis in the third direction , And is pivotally supported downward in parallel with a plane including the first direction and the second direction,
Two tool change devices (72L, 72R), the tool change device and the tool magazine are arranged on both sides in the first direction of the movement region of the tool headstock,
The exchange of the tool accommodated in the tool magazine on each side is performed by moving the tool headstock to a tool exchange position provided on each side in the first direction of the movement region,
The at least one of the two work spindles can be moved close to and away from the other in the first direction, and the tool gripping ends are opposed to each other on the same axis below the two tool magazines. Pivotally supported in the first direction,
The turret tool post (8) is provided with the indexing shaft (b) of the tool turret (81) in the first direction below the second direction of the axis on which the work spindle is provided. machine. A shielding cover (16) for shielding a region in which the tool spindle processes a workpiece and a tool spindle side machine chamber that houses a mechanism including a guide and a feed mechanism of the first to third moving tables; Is formed in one plane including a plurality of extendable covers (24, 24, 46D, 46U) arranged in a plane, and the tool magazine and the tool changer are arranged on the processing chamber side of the shielding cover. The composite machine tool according to claim 1. The machine base (1) is provided with struts (13) standing upright at both ends in the first direction, the shielding cover is provided between the struts on both sides, and the tool spindle is attached to the shielding cover (16). The shielding cover is provided on the front surface of the front-rear cylinder (45) penetrating in the third direction, and the two tool magazines are supported by support members (15) extending from the columns on each side to the processing chamber side. The composite machine tool according to claim 2, which is disposed on the near side as viewed from the operator . The left tool magazine (71L) of the multi-task machine tool according to claim 1, 2 or 3 accommodates a tool for machining a work gripped by the left work spindle (61L), and the right tool magazine (71R) has a right work spindle ( 61R), a tool for machining a workpiece to be gripped is accommodated, and a series of machining including tool change for each workpiece is alternately performed.

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