JP4345347B2 - Parallel 2-axis lathe work reversing machine and parallel 2-axis lathe with loader - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, two formed by arranging the chuck work turning machine above the left and right of the main shaft in the two parallel-axis lathe, and relates to the loader with two parallel-axis lathe.
[0002]
[Prior art]
In this type of conventional work reversing machine, two chucks are installed at the same height position, these chucks can pivot about a vertical axis, and one chuck approaches and separates from the other chuck. It is made freely (for example, patent document 1). With this configuration, the workpiece gripped by one chuck can be transferred to the other chuck, and the workpiece can be turned upside down by this transfer operation. The workpiece is transferred between the chuck of the reversing machine and the chuck of the main shaft by a gantry type loader having two chucks.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-84601
[Problems to be solved by the invention]
However, in the configuration in which the two chucks of the work reversing machine are installed at the same height position, when the loader is configured so that the two chucks are installed side by side, the chuck of the loader and the work reversing machine are used. When transferring workpieces to and from the loader, the loader's vertical position must be frequently switched and set. Therefore, the operation of the loader becomes complicated and the operation time is long. Moreover, it is necessary to lengthen the stroke which can raise / lower a loader, and the whole apparatus enlarges.
In order to solve such problems, the heights of the two reversing machine chucks are changed from each other, and the workpiece is transferred between the two reversing machine chucks by the approaching and separating operations in the diagonal direction of both chucks. Things have also been proposed. However, in that case, since the chuck moves in an oblique direction, the rotation axis of the chuck is inclined instead of the vertical axis. Therefore, it is necessary to consider the position of each claw of the loader chuck so that the workpiece gripping claws provided at a plurality of locations in the circumferential direction of the reversing machine chuck and the loader chuck do not interfere with each other. Cannot be used, and it becomes difficult to design a loader chuck configuration change.
[0005]
The object of the present invention is that when a loader having two loader chucks arranged vertically is used, the loader operation for transferring the workpiece between the loader and the reversing machine chuck can be performed efficiently, and the lifting stroke of the loader is short. It is an object of the present invention to provide a work reversing machine for a parallel twin-axis lathe that does not have the trouble of considering the configuration change of the loader chuck.
Another object of the present invention is to make it possible to easily change the specifications of the work reversing machine in accordance with changes in the work loading direction to the lathe.
Still another object of the present invention is to make it possible to easily change the specifications of the work reversing machine, including the position change of each frame, in accordance with the change of the work loading direction to the lathe.
[0006]
[Means for Solving the Problems]
The work reversing machine for a parallel twin-axis lathe according to the present invention has first and second chucks positioned above the left and right main spindles of the parallel twin-axis lathe, respectively, and these chucks can be swung around their respective vertical axes. Is a workpiece reversing machine that is supported by each other and can be opposed to each other, wherein the first chuck is installed so as to be movable up and down, and the second chuck is located within a range of vertical movement of the first chuck. It can be moved left and right at a predetermined height.
According to this configuration, since the height of the first chuck is freely adjustable, the first chuck and the load height of the first chuck are determined according to the interval between the two loader chucks arranged above and below the loader head. The workpiece can be transferred by the two loader chucks at substantially the same loader head height position with respect to the second chuck. Also, when the first chuck is moved up and down to match the height position of the second chuck, the workpiece is transferred between the first and second chucks by moving the second chuck to the left and right and turning both chucks. , Work can be reversed. In this way, since the workpiece can be transferred to both chucks of the work reversing machine at substantially the same loader head height position, it is not necessary to frequently change the loader head height, and the work between the loader and the reversing machine chuck is not required. The loader operation for delivery is simple and work can be made more efficient. Moreover, the stroke required for raising and lowering the loader head is short, and the loader can be made compact. In addition, both chucks of the work reversing machine can be swiveled around the vertical axis, so there is no need to change the design of the loader chuck to avoid interference with the chuck jaws of the work reversing machine. The troublesomeness of thinking can be eliminated.
[0007]
In the present invention, the second chuck may be fixed to an upper position and a lower position within the vertical movement range of the first chuck so that the position of the second chuck can be changed.
The chucks of the loader and the work reversing machine are often formed in a chuck shape dedicated to gripping an unprocessed part of a workpiece and gripping a processed part in order to ensure gripping. For this reason, the two chucks on the left and right sides of the work reversing machine should be either higher on the left or right depending on whether the upper or lower chuck of the loader is for the processed part or the material is loaded from the left or right side of the lathe. It is determined whether it is efficient for conveyance. On the other hand, it may be necessary to change whether to carry in from the left or right side of the lathe due to a factory layout change or the like. In response to such a change in the carry-in direction, the second chuck used at a fixed height position can be changed between the upper position and the lower position, thereby responding to changes in the work carry-in direction and the like. It is easy to change the specifications of the work reversing machine.
[0008]
In the present invention, a second chuck support frame that supports the second chuck and a separate frame are provided in the vertical direction in a region adjacent to the second chuck side with respect to the vertical movement region of the first chuck. The second chuck support frame and the separate frame may be interchangeable up and down.
In this configuration, the specification change of work turning machine, and repositioning of the frame with it also Ru can be done easily.
The parallel twin-axis lathe with a loader according to the present invention is such that a loader is installed above a parallel twin-axis lathe equipped with a work reversing machine. The work reversing machine has first and second chucks positioned above the left and right main spindles in a parallel twin-axis lathe, respectively, and these chucks are supported so as to be pivotable about vertical axes, respectively, and face each other. The work reversing machine is capable of moving the first chuck in a vertically movable manner, and the second chuck is moved to the left and right at a predetermined height within the vertical movement range of the first chuck. Install freely. The loader has a lifting rod that can be moved up and down with respect to a traveling body that runs on a construction rail that extends in the left-right direction. The loader head provided at the lower end of the lifting rod is attached to the spindle and the chuck of the work reversing machine. On the other hand, two chucks that are capable of transferring workpieces are arranged one above the other.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. 1 and 2 are a front view and a side sectional view, respectively, of a parallel twin-axis lathe provided with the work reversing machine of this embodiment. This parallel twin-axis lathe includes two left and right main spindles 1 and 1 and two left and right turret-type tool rests 2 and 2 corresponding to both main spindles 1. The work reversing machine 3 includes the left and right main spindles 1 and 1 respectively. 1 has a first chuck 2A and a second chuck 4B located above the first chuck 4B. A gantry type loader 5 is installed above the arrangement part of the main spindle 1 and the tool post 2.
[0010]
The two main shafts 1 and 1 are supported by the main shaft bases 41 arranged side by side at the center in the left-right direction on the bed 6. The two turret-type turrets 2 and 2 have their turning centers parallel to and at the same height as the axis of the main shaft 1, and are respectively provided on the bed 6 on the left and right outer sides of the main shafts 1 via the feed table 42. is set up. The tool post 2 has a frontal polygonal drum shape with each peripheral surface portion serving as a tool station, and is moved back and forth (in the Z-axis direction) and left and right (in the X-axis direction) as the feed base 42 moves. It is possible to be indexed and rotated with respect to the feed table 42.
[0011]
The loader 5 is means for delivering the workpiece W between the material supply unit and the product carry-out unit (not shown) installed on the left and right of the lathe, the two main spindles 1 and the workpiece reversing machine 3. The loader 5 is of a gantry type that travels along the installation rail 7, and the installation rail 7 extends from the material supply part on the left and right of the lathe to the product carry-out part and above the installation part of the spindle 1 and the tool rest 2. It is installed. The loader 5 includes a front / rear moving table 9 mounted on a traveling body 8 that travels on a construction rail 7, and a lifting / lowering rod 10 is provided on the front / rear moving table 9 so as to be movable up and down, and a loader head 11 provided at the lower end of the lifting / lowering rod 10. In addition, two chucks 12A and 12B are provided side by side. The installation rail 7 is provided on the rail support frame 45. Each chuck 12 </ b> A, 12 </ b> B is provided in a direction facing the main shaft 1. The chucks 12A and 12B move together with the loader head 11 to the left and right (X-axis direction), front and rear (Z-axis direction), and up and down (by the operations of the traveling body 8, the front and rear moving base 9, and the lifting rod 10. It can be moved up and down in the Y-axis direction).
[0012]
The work reversing machine 3 is a device that reverses the work W delivered from the loader 5, and the two chucks 4 </ b> A and 4 </ b> B are supported so as to be pivotable about the vertical axis, and can be opposed to each other. It is possible. Further, the first chuck 4A located on the left side of the figure is installed so as to be movable up and down, and the second chuck 4B located on the right side is movable left and right at a predetermined height position within the range of vertical movement of the first chuck 4A. Is installed.
[0013]
That is, as shown in a front view in FIG. 3, the first chuck 4 </ b> A is provided on a substantially rectangular first chuck support frame 13 installed in a vertical posture at a position below the installation rail 7, and a vertical movement table 14 and a pair of pairs. The guide rods 15 and 15 are installed so as to be movable up and down. The pair of guide rods 15, 15 are installed in parallel in the vertical direction on the front surface of the first chuck support frame 13, and the vertical movement table 14 is engaged with these guide rods 15 so as to be movable up and down. A chuck base 16 to which the first chuck 4A is fixed is supported via a vertical shaft 17 between support pieces 14a, 14a on the upper and lower edges of the vertical movement table 14 so as to be rotatable. FIG. 4 shows a cross section of the support portion of the first chuck 4A viewed from the direction of the arrow P in FIG. As shown in the figure, an advancing / retracting rod 18 a of an elevating drive source 18 composed of an elevating cylinder provided vertically on the first chuck support frame 13 is connected to the vertical moving table 14, and driving of the elevating drive source 18 is performed. The vertical movement table 14 moves up and down. Further, as shown in FIG. 6 and FIG. 7 showing a sectional view and a bottom view as seen from the direction of the arrow S in FIG. 3, a turning drive source composed of an advancing / retreating cylinder installed in the left-right direction on the vertical moving table 14. 19 advance / retreat rods 19 a are rotatably supported by a part of the chuck base 16, and the advance / retreat drive source 19 rotates the chuck base 16 around the vertical shaft 17.
[0014]
As shown in FIG. 3, in the region B adjacent to the second chuck 4B side with respect to the vertical movement region A of the first chuck 4A, a substantially rectangular second chuck support frame that supports the second chuck 4B. 23 and another substantially rectangular frame 33 are arranged side by side in the vertical direction. The second chuck support frame 23 and the separate frame 33 can be rearranged up and down, and the sides adjacent to each other in the upper and lower directions are joined by bolts (not shown) in an arbitrary rearrangement state. The second chuck support frame 23 and the separate frame 33 have one side coupled to the first chuck support frame 13 and the other side coupled to the vertical frame 35. The chuck support frame 23, the separate frame 33, and the vertical frame 35 constitute a reversing machine frame 34 assembled with each other. The reversing machine frame 34 is installed, for example, on the rail support frame 45 or the headstock 41. The second chuck support frame 23 and the separate frame 33 are installed on the first chuck support frame 13 and the vertical frame 35 by fastening with bolts 36. The bolt insertion holes 37 and 38 (FIG. 5) for bolt connection of the second chuck support frame 23 and the separate frame 33 in the first chuck support frame 13 and the vertical frame 35 are arranged in a predetermined arrangement so that the above-described recombination is possible. The pitch is set. The bolt 36 and the bolt insertion holes 37 and 38 are fixed at a fixed height for fixing the second chuck 4B so that the position of the second chuck 4B can be changed between the upper position and the lower position within the vertical movement range of the first chuck 4A. Configure the means.
[0015]
On the second chuck support frame 23, the second chuck 4 </ b> B is installed so as to be movable left and right via a left / right moving table 24 and a pair of guide rods 25, 25. The pair of guide rods 25, 25 are installed in parallel in the left-right direction on the front surface of the second chuck support frame 23, and a left / right moving base 24 is engaged with these both guide rods 25 so as to be movable left and right. As shown in FIG. 5 which shows a cross-sectional view of the support portion of the second chuck 4B viewed from the direction of the arrow Q in FIG. 3, between the support pieces 24a, 24a formed on the upper and lower edges of the left / right moving table 24, A chuck base 26 to which the second chuck 4 </ b> B is fixed is rotatably supported via a vertical shaft 27. As shown in FIG. 3, an advancing / retreating rod 28a of an advancing / retreating drive source 28 comprising an advancing / retreating cylinder provided on the frame 35 in the left / right direction is connected to the left / right moving table 24, and the advancing / retreating drive source 28 moves left / right. The base 24 is driven forward and backward. Further, as shown in FIG. 6, an advancing / retracting rod 29a of a turning drive source 29 composed of an advancing / retracting cylinder installed in the left / right direction on the left / right moving base 24 is rotatable to a part of the chuck base 26. The chuck base 26 is pivotally driven around the vertical axis 27 by the pivot drive source 29. On the front surface of the separate frame 33, a distributor (not shown) for supplying and supplying the pressure fluid supplied from the pressure fluid supply source to the cylinders 18, 19, 28, and 29, and a cover for covering the distributor. 38 is provided.
[0016]
The operation of the above configuration will be described. In this embodiment, the parallel twin-axis lathe is mounted on the right spindle 1 after the workpiece W is mounted on the left spindle 1 to perform single-sided processing, and the single-side processed work W is turned upside down by the workpiece reversing machine 3. Then, the remaining one side of the workpiece W is further processed into a finished product. In this case, for example, the following operation is performed.
(1) The material workpiece W supplied to a workpiece supply unit (not shown) installed on the left side of the lathe is transferred to the upper chuck 12 </ b> A in the loader head 11 of the loader 5. The loader 5 holding the material workpiece W moves to a position where the lower lower chuck 12 </ b> B of the loader head 11 faces the left main shaft 1. Here, the workpiece W mounted on the left spindle 1 and processed on one side is transferred to the lower chuck 12 </ b> B of the loader head 11.
(2) Next, the loader head 11 further descends to a height at which the upper chuck 12 </ b> A faces the left main shaft 1, and transfers the material workpiece W to the left main shaft 1.
(3) Thereafter, the loader head 11 is raised to a height at which the lower chuck 12B faces the first chuck 4A of the work reversing machine 3. At this time, the first chuck 4A is lowered to a predetermined position below and is waiting in a posture facing the front surface. The loader head 11 passes the single-side processed workpiece W gripped by the lower chuck 12B to the first chuck 4A of the workpiece reversing machine 3.
(4) The first chuck 4A that has received the single-sided workpiece W rises to the same height position as the second chuck 4B and pivots sideways facing the second chuck 4B.
(5) The second chuck 4B pivots sideways facing the first chuck 4A, moves laterally to the left, approaches the first chuck 4A, and receives the single-sided workpiece W from the first chuck 4A.
(6) The second chuck 4B that has received the single-sided workpiece W moves sideways to the original right position and turns forward. Thereby, the single-sided work W is reversed.
(7) The loader 5 moves left and right to a position where the upper chuck 12A of the loader head 11 faces the second chuck 4B of the work reversing machine 3, and the upper chuck 12A is moved from the second chuck 4B of the work reversing machine 3. A single-sided workpiece W that has been turned upside down is received.
(8) The loader head 11 is lowered to a height at which the lower chuck 12B, which is the empty side, faces the right main shaft 1, and the workpiece W mounted on the right main shaft 1 and processed into a finished product is moved to the lower chuck. Receive at 12B.
(9) The loader head 11 that has received the finished product workpiece W in the lower hack 12B descends to a height at which the upper chuck 12A faces the right main shaft 1, and the right side of the single-side processed workpiece W that is reversed from the upper chuck 12A. To the spindle 1 of
(10) After that, the loader 5 moves to a finished product workpiece unloading part (not shown) on the right side of the lathe, and unloads the finished product workpiece W gripped by the lower chuck 12B to the workpiece unloading unit.
[0017]
As described above, in the workpiece reversing machine 3 of this parallel twin-axis lathe, the first chuck 4A is installed so as to be movable up and down, and the second chuck 4B is placed at a predetermined height position within the range of vertical movement of the first chuck 4A. Therefore, even when the loader 5 in which two chucks 12A and 12B are arranged on the loader head 11 are arranged up and down as in this embodiment, the loader 5 and the work reversing machine 3 When the workpiece W is transferred between the chucks 12A and 12B of the loader head 11 to face the chucks 4A and 4B of the work reversing machine 3, it is not necessary to frequently change the height of the loader head 11. The operation of the loader 5 can be simplified and the work can be made efficient. In the work reversing machine 3, since the chucks 4A and 4B on both sides revolve around the vertical axis, the loader chucks 12 and 12B are configured to avoid chuck claw interference as in the case of revolving around the tilt axis. There is no hassle to think about changes.
[0018]
In addition, since the work reversing machine 3 can change the position of the second chuck 4B to the upper position and the lower position within the vertical movement range of the first chuck 4A, the work reversing machine 3 can be moved in the direction of the work loading / unloading of the lathe. The specification change of the work reversing machine 3 with respect to the change can be easily performed as shown in FIG. That is, in FIG. 8, the second chuck support frame 23 is changed to the lower position, and the other frame 33 is changed to the upper position. As described above, the above-described specification change of the work reversing machine 3 can be easily performed including the position change of the second chuck support frame 23 and the separate frame 33 associated therewith. In this case, the workpiece W is delivered in the following procedure.
[0019]
(1) The material workpiece W is gripped by the upper chuck 12A of the loader head 11, and the one-side processed workpiece W of the right spindle 1 is received by the lower chuck 12B.
(2) The single-side workpiece W received by the lower chuck 12B is transferred to the second chuck 4B of the workpiece reversing machine 3.
(3) The first chuck 4A of the work reversing machine 3 moves to the lower position and receives the single-sided work W from the first chuck 4A, thereby reversing the single-sided work W. Next, the first chuck 4A moves to the upper position.
(4) The upper surface chuck 12 </ b> A of the loader head 11 receives the single-side processed workpiece W that has been reversed from the first chuck 4 </ b> A of the workpiece reversing machine 3.
(5) The lower chuck 12B of the loader head 11 receives the finished product W from the left spindle 1 and the left spindle 1 receives the inverted single-side workpiece W gripped by the upper chuck 12A of the loader head 11. hand over.
(6) The finished product workpiece W gripped by the lower chuck 12B of the loader head 11 is carried out to the finished product workpiece unloading section.
[0020]
【The invention's effect】
The work reversing machine for a parallel twin-axis lathe according to the present invention has first and second chucks positioned above the left and right main spindles of the parallel twin-axis lathe, respectively, and these chucks can be swung around their respective vertical axes. Is a workpiece reversing machine that is supported by each other and can be opposed to each other, wherein the first chuck is installed so as to be movable up and down, and the second chuck is located within a range of vertical movement of the first chuck. Since the loader having two loader chucks arranged vertically is used, the loader operation for workpiece transfer between the loader and the reversing machine chuck can be performed efficiently. The lifting / lowering stroke can be short. In addition, there is no need to worry about changing the configuration of the loader chuck.
When the second chuck is fixedly installed at the upper and lower positions within the vertical movement range of the first chuck so that the position of the second chuck can be changed, the usage pattern change such as changing the direction of loading and unloading the lathe Therefore, it is possible to easily change the specifications of the work reversing machine according to the change of the lathe usage pattern.
A second chuck support frame that supports the second chuck and a separate frame are provided in a region adjacent to the second chuck side with respect to the vertical movement region of the first chuck, and these second chuck support frames are provided. And the other frame can be rearranged up and down, the specifications of the work reversing machine change according to the change of the lathe usage mode, and the change of the lathe usage mode, etc. each frame position change with the Ru easy.
The parallel twin-axis lathe with a loader according to the present invention is such that a loader is installed above a parallel twin-axis lathe equipped with a work reversing machine, and the work reversing machine is respectively above the left and right main axes of the parallel twin-axis lathe. A workpiece reversing machine having first and second chucks positioned so as to be pivotably supported around a vertical axis and capable of facing each other. The second chuck is installed so as to be movable left and right at a predetermined height within the vertical movement range of the first chuck, and the loader runs on a construction rail extending in the left-right direction. The lifting rod can be moved up and down with respect to the traveling body, and the workpiece can be delivered to the spindle and the chuck of the workpiece reversing machine on the loader head provided at the lower end of the lifting rod. Since such a chuck intended to by arranging two provided vertically, the loader operation for workpiece delivery between the reversing machine chuck loader is efficiently performed, and permits shorter elevating stroke of the loader. In addition, there is no need to worry about changing the configuration of the loader chuck.
[Brief description of the drawings]
FIG. 1 is a front view of a parallel twin-axis lathe provided with a work reversing machine according to an embodiment of the present invention.
FIG. 2 is a left side sectional view of the parallel twin-axis lathe.
FIG. 3 is an enlarged front view showing an installation part of a work reversing machine in the parallel twin-axis lathe.
4 is a side cross-sectional view of the work reversing machine as seen from the direction P in FIG. 3;
5 is a side cross-sectional view of the work reversing machine as seen from the Q direction in FIG. 3. FIG.
6 is a cross-sectional view of the work reversing machine as viewed from the S direction in FIG. 3;
FIG. 7 is a bottom view of the work reversing machine.
FIG. 8 is a front view showing a specification change state of the work reversing machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Main shaft 3 ... Work reversing machine 4A ... 1st chuck 4B of work reversing machine ... 2nd chuck 13 of work reversing machine ... 1st chuck support frame 14 ... Vertical movement stand 15 ... Guide rod 16 ... Chuck base 17 ... vertical axis 18 ... elevating cylinder 19 ... advance / retreat cylinder 23 ... second chuck support frame 24 ... left / right moving base 25 ... guide rod 26 ... chuck base 27 ... vertical axis 28 ... advance / retreat cylinder 29 ... advance / retreat cylinder 34 ... coupling frame A ... Up-and-down movement area B of the first chuck ... Area adjacent to the second chuck side

Claims (3)

The first and second chucks are respectively located above the left and right spindles in the parallel twin-axis lathe, and these chucks are supported so as to be pivotable about the vertical axis, respectively, and can be opposed to each other. In the workpiece reversing machine, the first chuck is installed so as to be movable up and down, and the second chuck is installed so as to be movable left and right at a predetermined height within the range of vertical movement of the first chuck. the serial second chuck, the upper position and the lower position and the position change secured installed spur row second axis lathe work turning machine in the vertical movement range of the first chuck. The first and second chucks are respectively located above the left and right spindles in the parallel twin-axis lathe, and these chucks are supported so as to be pivotable about the vertical axis, respectively, and can be opposed to each other. In the workpiece reversing machine, the first chuck is installed so as to be movable up and down, and the second chuck is installed so as to be movable left and right at a predetermined height within the range of vertical movement of the first chuck. A second chuck support frame that supports the second chuck and a separate frame are provided side by side in a region adjacent to the second chuck side relative to the vertical movement region of the first chuck. a chuck support frame and another frame, can reclassified on top of each other and the flat row second axis lathe work turning machine. A parallel twin-axis lathe with a loader in which a loader is installed above a parallel twin-axis lathe equipped with a workpiece reversing machine,
The work reversing machine has first and second chucks positioned above the left and right main spindles in a parallel twin-axis lathe, respectively, and these chucks are supported so as to be pivotable about vertical axes, respectively, and face each other. The work reversing machine is capable of moving the first chuck in a vertically movable manner, and the second chuck is moved to the left and right at a predetermined height within the vertical movement range of the first chuck. Install freely,
The loader has a lifting rod that can be moved up and down with respect to a traveling body that runs on a construction rail that extends in the left-right direction. The loader head provided at the lower end of the lifting rod is attached to the spindle and the chuck of the work reversing machine. A parallel twin-axis lathe with a loader, in which two chucks that can deliver workpieces are arranged one above the other.

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