JPH0544401U - Vertical 2-axis lathe - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] In a vertical 2-axis lathe, it is possible to process workpieces on two main spindles from both sides at the same time, and streamlines and simplifies workpiece loading and unloading. Plan. [Structure] The vertical two-spindle lathe has two main spindles 3 arranged in the front-rear direction as viewed from the operating side, one on each side of the main spindle column line, parallel to the axial center, and at a position orthogonal to the main spindle. The turret turret 5 is provided so that the workpieces on the respective spindles 3 can be machined independently or simultaneously by the turrets 5 on both sides. In addition, by equipping the turret tool post 5 with a turret hand, it is possible to automatically carry in the work, clamp and unclamp the work on the spindle, and carry out the work automatically.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a vertical two-axis lathe.

[0002]

[Prior Art]

 In the conventional vertical two-axis lathe, as shown in FIGS. 8 to 11, two spindles B are erected in the left-right direction with respect to the machine base operating side A, and FIG. In FIG. 9, a turret tool post C is erected on the column line of the main shaft B in a position facing the main shaft B in parallel with the main shaft B, with the turret blade surface F facing downward on the back side of the machine base. Each turret tool post C is connected to a vertical drive unit D in the axial direction of the main shaft B and a lateral movement drive unit E in the horizontal direction orthogonal to the main shaft B on the column line. The structure is such that it can move up and down and left and right.

In FIGS. 10 and 11 showing a second example, on the column line of the spindle B which is erected in the left-right direction with respect to the operating side A, the spindle B is located at a position facing the spindle B, respectively. A turret tool post G is horizontally arranged with the turret blade surface F facing the operation side A at a right angle. Each turret tool post G is connected to a vertical drive unit H in the axial direction of the main shaft B and a horizontal movement drive unit I in the left-right direction orthogonal to the main shaft B, and the vertical and horizontal directions with respect to the main shaft B. The structure is such that it can move in any direction.

Both of the operations of the tool rests C and G with respect to the workpiece mounted on the spindle B in the first and second examples described above are performed for one workpiece with respect to one spindle B. Machining is performed by the vertical and horizontal feed operations of the turrets C and G. Similarly, the work on the other adjacent main spindle B is also processed by the feed operation in both the upward and downward directions and the left and right directions of the other tool rests C and G. For the work on the spindle, the structure is such that machining is performed by the feed operation of the tool post on one side. Therefore, there is a drawback that the machining efficiency cannot be expected to be improved because the simultaneous machining operation cannot be performed by the tool rests on both sides adjacent to the spindle on one side.

When the automatic transfer device for the work to which the spindle is fitted is fitted, the conventional structure described above requires a special autoloader, such as a lift-and-carry type or a front face. Since a traveling loader or a gantry loader will be installed, there is a drawback that the equipment cost will be high for automation, and when installing these special devices, it will be necessary to install them on the front of the machine. There is a drawback that it is difficult to lean on, and there is a built-in problem regarding operability.

[0006]

[Problems to be solved by the device]

 In view of the current state of the structure of the conventional vertical two-axis lathe, the two turret turrets arranged on both sides of the spindle correspond to the workpieces mounted on the two spindles mounted on the machine base. With this structure, it is possible to process one spindle or two spindles at the same time from both sides, so that highly efficient machining is possible, and a workpiece is attached to the spindle by the handling device attached to the double tool post. Since loading and unloading of workpieces is automated, the loading and unloading equipment attached to the equipment simplifies the loading and unloading of workpieces, and the machining program operation by these equipment and NC control. The purpose of the present invention is to provide a vertical two-spindle lathe capable of forming a series of automated systems and improving machining efficiency by cooperating with the above.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in the present invention, two main shafts in the front-rear direction are erected on the machine base operating side, and on both sides of the line of the main shaft, the line and the axis are parallel to each other. In addition, one turret tool post is disposed orthogonally to the main shaft, and each turret tool post has a vertical drive unit in the axial direction of the main shaft and a lateral drive unit in the horizontal direction orthogonal to the axial direction. The work handling device is attached.

[0008]

[Action]

 According to the configuration of the present invention, two turrets are provided in the front-rear direction on the machine base operating side, and the turret tool post having a workpiece handling device and a tool holder common to each of the turrets is provided. Independently arranged on both left and right sides of the column line, even for one spindle work or two spindle work, the turret turrets on both sides can be moved vertically and horizontally. Since it is a structure that allows simultaneous movement to one side, it is possible to process one work piece from both sides at the same time, which has the effect of enabling high-efficiency workability.

A turret type tool holder which is rotated for indexing is arranged on the turret tool post, and a handling device having a function of automatically mounting a work on the spindle is mounted, so that a loading function and an unloading function are provided. And a vertical movement drive unit in the axial direction of the main shaft connected to the turret tool post, a horizontal movement drive unit in the horizontal direction orthogonal to the axial direction, and the handling device. By adopting the NC, the efficiency of machining of workpieces and the simplification of transportation can be achieved. Furthermore, even for various kinds of workpieces, the tool holder of the turret tool post can be used for various kinds of workpieces. Also enables stepless processing.

[0010]

【Example】

 1 to 7 show an example of the embodiment of the present invention. An outline of the structure of a vertical two-axis lathe as an embodiment is shown in FIGS. Two main shafts 3 are erected in the front-rear direction with respect to the operating side 2, and one main shaft 3 is provided on each side of the main line 3 at a position parallel to the line line 4 and at a position orthogonal to the main shaft 3. A turret turret 5 of books is arranged.

The turret tool post 5 is arranged on the back side 6 of the machine base 1 on both the left and right sides of the row line 4, and is erected so as to be movable in the left-right direction X horizontal to the operating side 2. Is mounted on the front side wall surface 13 of the column 7, and is slidable in the vertical direction Y with respect to the wall surface 13. Each of the tool rests 5 is mounted on the upper portion of the column 7 and is vertically driven. The servomotor 14 which is coupled to the unit 8 and serves as a power source of the drive unit 8 can move in the vertical direction Y with respect to the main shaft 3 by a control operation.

A pair of feed screws 10 for individually moving the columns 7 in the left-right direction X are arranged in the lower portion of each column 7 so as to be orthogonal to the column line 4 of the spindle 3. The screw 10 is rotatably supported by a pair of support bases 11 arranged on both sides of each of the columns 7, and an end portion of the screw 10 is arranged on the rear side 6 of the machine base 1. The screw 10 is connected to a lateral movement drive unit 12, which is a drive unit, and is driven by a servo motor 15 disposed in the drive unit 12. The pair of feed screws 10 are driven by a synchronous drive system of the servo motor 15. The feed screw 10 of the book is synchronously rotated, and even when the turret tool post 5 is moved in the left-right direction, the runout is prevented and smooth movement is possible.

Each of the turret turrets 5 can be independently moved in the vertical direction Y and the horizontal direction X with respect to the spindle 3 by the servo motors 14 and 15, and the turret turrets 5 on both sides can be moved. The turret turrets 5 can simultaneously move the workpieces.

Each of the above-described main shafts 3 is vertically supported on the machine base 1, and a chuck 25 for wearing a work piece shown in FIG. 6 is disposed on the upper end of the main shaft 3 so as to project from the upper surface of the machine base 1. It is connected to a servo motor 20 arranged on the rear side 6 of the machine base 1 and has a structure in which the required rotation is given by the servo motor 20 during cutting of a work and power required for the processing can be transmitted. ing.

As shown in FIGS. 2, 4 and 5, the turret tool rests 5 on both sides are provided with turret type tool holders 17 A and 17 B which are four-sided indexed about a rotary shaft 16. Each of them is provided with one turret hand 19 as a handling device and three bite holders 18, and the bite attached to the bite holders 18 on both sides are on the center line of the spindle 3. It is located at the position where the workpiece is cut toward.

By attaching the turret hands 19 to the tool holders 17A and 17B of the turret turrets 5 and 5 on both sides and disposing the work loading device and the work unloading device between the adjacent two-axis lathes, respectively. The rotary operation of the tool holder 17A on one side and the movement operation of the tool rest 5 enable automatic loading of the work onto the spindle 3. Similarly, by operating the tool holder 17B on the other side, the spindle 3 It is possible to automatically carry out the work that has been processed.

Hereinafter, the automatic conveyance process of the work will be described with reference to FIGS. 6 and 7. FIG. 6 shows an embodiment of the turret hands 19A, 19B and the work 21 at the loading point position V and the unloading point position W of the work 21 and the position of the chuck 25 of the spindle 3, and shows the loading point of the work loading device 22. At the position V, the work 21 is clamped by the one turret hand 19A by the rotation of the one tool holder 17A and the movement of the tool rest 5 in the vertical direction Y and the horizontal direction X, and the position of the spindle 3 is maintained. 6 shows a state in which the tool holder 17A is rotated and the turret 5 is moved to move it from the loading point position V to the chuck 25, and the unloading point of the work unloading device 24 is shown. At the position W, the machined work piece 21 has the other tool holder 17B and the other turret tool post 5 By the same operation by, it shows a state of being transferred to the unloading device 24.

The tool holders 17A, 17B have four indexing surfaces, except for the turret hands 19A, 19B, at three locations, which are bite holders 18, both sides of the work 21 fitted to the chuck 25 of the spindle 3. The turret turrets 5 and 5 approach each independently, and the cutting tool bites are sequentially machined by preset tool bits by the selective rotation of the tool holders 17A and 17B.

FIG. 7 shows an operation diagram of the turret hands 19A and 19B in the process of transferring the work 21 from the loading to the spindle 3 and transferring from the spindle 3 to the unloading. The diagram is the turret. The locus synthesized by the movement of the turret 5 in the horizontal direction X and the vertical direction Y by the servomotors 14 and 15 and the rotation of the turret hands 19A and 19B is shown.

The loading and unloading operations of the work 21 by the turret hand 19A are indicated by the reference numerals in the diagram. The operation of the work loading operation will be described with reference to the reference numerals in FIG. . a: Indicates an approach operation to the loading point position V. b: Shows the work clamp operating point by the turret hand 19A. c: Transfer operation from the work clamp operating point to the chuck 25 of the spindle 3, and a combined operation of the 90 ° turning operation of the turret hand 19A and the operation of the turret tool post 5 in the X and Y directions. by. d: The unclamping operation point of the turret hand 19A after the attachment to the chuck 25 is completed is shown. e: The process of returning from the work clamp operating point to the origin 01 is shown, and a diagram of the operation of the turret tool post 5 in the Y direction and the X direction is shown.

Regarding the work unloading operation by the turret hand 19B, the operation will be described with reference to the reference numerals in the drawing of FIG. f: The approaching operation of the spindle 3 from the origin to the chuck 25 is shown. g: The work clamping point of the work 21 that has been machined is indicated by the turret hand 19B. h: The transfer operation from the work clamp operation point to the unloading point position W is shown, which is a combined operation of the 90 ° turning operation of the turret hand 19B and the operation of the turret tool post 5 in the X and Y directions. .. i: Indicates the work clamp operating point by the turret hand 19B at the unloading point position W. j: A process of returning from the work unclamping operation point to the origin O is shown, and a diagram is shown by the operation of the turret tool post 5 in the X direction and the Y direction.

[0022]

[Effect of the device]

 The present invention has the configuration and operation described above, and two main spindles of a vertical two-spindle lathe are arranged upright in the front-rear direction with respect to the machine base operating side, and the rows are arranged on both sides of the row line of the main spindles. By arranging one turret tool post parallel to the line and perpendicular to the axis, each turret tool post can move independently in the vertical and horizontal directions with respect to each spindle. In addition, since both turret turrets can move in the same way at the same time, the structure is such that it can machine either one spindle or two spindles individually or simultaneously. Since it is driven by a normal servo motor in both directions, workability is good and high-efficiency machining can be achieved.

By installing a turret hand, which is a handling device, at one place other than the bit holder on the indexing surface of the tool holders attached to the turret turrets on both sides, in addition to the space between adjacent vertical two-axis lathes. If a work loading device and a work unloading device are installed in the work, the work from the loading position of the work to the spindle can be performed by the combination of the rotating motion of the turret hand and the moving motion of the turret in the previous period. Automatic loading and mounting on the chuck are automated, and similarly, removal of the processed workpiece from the chuck and transfer to the workpiece unloading device are automated, and thus interlocking with the turret hand, which is a handling device attached to both tool turrets. This has the effect of simplifying transportation.

In addition to the above-described simplification of transportation, by planning the total program operation by NC control in the linkage between the servo motor of this machine and the servo motor of the transportation device between the adjacent vertical two-axis lathes, It also has the effect of enabling stepless transfer even for many types of work.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a vertical two-axis lathe showing an example of an embodiment.

FIG. 2 is a front view of what is shown in FIG.

FIG. 3 is a side view of what is shown in FIG.

FIG. 4 is a schematic front view showing the structure of the turret tool post of the one shown in FIG.

FIG. 5 is a plan view of what is shown in FIG.

FIG. 6 is a schematic front view showing the automatic work transfer system of the one shown in FIG.

FIG. 7 is an operation diagram showing a process of automatic work transfer from work carry-in to carry-out.

FIG. 8 is a schematic plan view of an example of a conventional vertical two-axis lathe.

9 is a schematic front view of what is shown in FIG. 8. FIG.

FIG. 10 is a schematic plan view of another example of a conventional vertical two-axis lathe.

11 is a schematic front view of what is shown in FIG.

[Explanation of symbols]

 1 Machine stand 2 Operation side 3 Spindle 4 Row line 5 Turret tool post 8 Vertical movement drive unit 12 Lateral movement drive unit

Claims (1)

[Scope of utility model registration request] 1. Two main shafts in the front-rear direction are erected on the machine base operating side, and on both sides of the line of the main shaft, the line and the axis are parallel to each other and orthogonal to the main shaft. One turret turret is provided, and each turret turret is connected to a vertical drive unit in the axial direction of the main spindle and a lateral movement drive unit in the left-right direction orthogonal to the axial direction, and a work piece. Vertical 2-axis lathe with the handling device of