JPH035407Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a workpiece edge processing device, and in particular,
The present invention relates to a workpiece end processing device that can efficiently process the ends of a plurality of types of workpieces having different longitudinal dimensions using small-sized equipment.

(Prior Art) With the recent advancements in machine tools, FMS lines that allow multiple types of workpieces with different shapes to be conveyed inline and processed on the same line are increasingly being used. For example, in the process of machining the ends of cylinder heads and cylinder blocks for automobile engines, long workpieces used for six-cylinder engines and short workpieces used for four-cylinder engines are flown on the same line. There is.

FIGS. 6 and 7 show a conventional machining device for machining the ends of such long and short workpieces. In the drawings, for convenience of explanation, the long workpiece 1 and the short workpiece 2 are shown overlapping each other by solid lines. First, assuming that the end of the long workpiece 1 is to be machined,
from position A to B by the first conveyor 3.
Transport to the position. Next, the long workpiece 1 is set on the turntable 6 of the first machine tool 5 by the first transfer device 4 (position C), and the long workpiece 1 is located and clamped onto the turntable 6. Then, the turntable 6 is indexed to the −90° side as shown in FIG. Thereafter, as shown in FIG. 7B, the front end portion 1b of the long workpiece 1 is machined by indexing the turntable 6 at +90° with respect to the state shown in FIG. Furthermore, as shown in FIG. 7C, the turntable 6 is returned to the 0° position (original position), and the long workpiece 1 is placed on the second conveyor 7 by the first transfer device 4 ( position D in Figure 6).

The long workpiece 1 is transported by the second transport conveyor 7 to position E in the figure, and then placed on the turntable 11 of the second machine tool 9 by the second transfer device 8 (F position), in this state, the turntable 11 is first indexed to the −90° side, as shown in FIG. (FIG. 7E), the front end portion 1b of the long workpiece 1 is processed by the processing tool 10. Next, as shown in FIG. 7F, the long workpiece 1 is returned to the 0° position (original position) and sent to the next process.

Next, to process both ends of the short workpiece 2,
The short workpiece 2 carried into position A in Fig. 6 is
After being transported to position B by the first transport conveyor 3, it is set on the turntable 6 of the first machine tool 5 by the transfer device 4 (Fig. 6C).
position). After locating and clamping the short workpiece 2 onto the turntable 6, the turntable 6 is indexed to the -90° side as shown in FIG. A predetermined process is performed in step 10.

Thereafter, as shown in FIG. 7B, even if the turntable 6 is indexed +90° with respect to the state shown in FIG. Since it is far away, it cannot be processed. Therefore, the seventh
As shown in FIG. C, the turntable 6 is returned to the 0° position (original position), and the short workpiece 2 is transported by the first transfer device 4 to the D position shown in FIG.

This short workpiece 2 is transported by the second transport conveyor 7 to position E in the figure, and then placed on the turntable 11 of the second machine tool 9 by the second transfer device 8 ( F position). When the short workpiece 2 is transferred from the E position to the F position, the short workpiece 2 is moved forward by the second transfer device 8, and the front end 2b of the short workpiece 2 is moved forward by the second transfer device 8.
is positioned to match the processing position by the processing tool 10a. In this state, turntable 11
As shown in FIG. 7D, even if it is indexed to the −90° side, the rear end of the short workpiece 2 cannot be machined, so as shown in FIG. 7E,
The front end 2b of the short workpiece 2 is indexed to the +90° side and processed by the processing tool 10a. next,
As shown in FIG. 7F, the short workpiece 2 is returned to the 0 position (original position) and sent to the next process.

(Problem that the invention attempts to solve) In this way, the conventional workpiece edge processing device
In order to finish machining the front and rear ends of a long workpiece and a short workpiece, two or more machine tools and two or more conveyance devices are required, leading to the problem of increased equipment size. It was hot.

The present invention focuses on the problems of the prior art described above, and aims to make it possible to process the ends of a plurality of types of workpieces having different longitudinal dimensions on a single turntable.

(Means for Solving the Problems) The present invention for solving the above-mentioned problems is such that multiple types of workpieces having different longitudinal dimensions are placed on the turntable and adjacent to the turntable. In a workpiece edge processing device that processes both ends of the workpiece in the longitudinal direction using a processing tool of a machine tool provided as The outer diameter of the turntable is set so that when the workpiece is placed on the turntable, both front and rear ends of the long workpiece in the longitudinal direction are processed by the processing tool with respect to the turntable. , after positioning a short workpiece whose longitudinal dimension is shorter than the long workpiece with one end of the front and rear ends of the short workpiece at the processing position, the short workpiece is placed on the turntable in the longitudinal direction; The present invention is characterized by comprising a workpiece moving means for positioning the other end of the short workpiece at the processing position by shifting in the direction, so that both ends of a plurality of types of workpieces can be processed on the same turntable. This is a workpiece edge processing device.

(Function) According to such means, the workpiece can be shifted on the turntable and positioned at the processing position, so it is possible to process multiple types of workpieces with different lengths with one machine tool. can.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

1 to 3 are diagrams showing a workpiece end processing device according to an embodiment of the present invention. As shown in FIG. 1, a machine tool 21 includes a cutting drill as a processing tool 22 and a turntable. 23 are provided. A plurality of these processing tools 22 are provided in the machine tool 21 and are of a turret type. In the illustrated embodiment, a long workpiece 1 is machined by one machine tool 21.
and short workpiece 2 whose longitudinal dimension is shorter than this.
The outer diameter of the turntable 23 is set to be approximately the same as the length of the long work 1 in the longitudinal direction. Therefore, in this case, the outer peripheral portion of the turntable 23 is the processing position by the processing tool 22. still,
When the long workpiece 1 is placed on the turntable 23, if it is set so that the front and back ends of the long workpiece 1 in the longitudinal direction are the processing positions by the processing tool 22, the outer circumference of the turntable 23 It is not necessary for the processing position and the processing position to be the same position. In other words, it may be in a shifted position. Further, in FIG. 1, a long workpiece 1 is shown by a solid line, and a short workpiece 2 is shown by a virtual line.

A workpiece support stand 20 is installed adjacent to the machine tool 21, and the workpiece support stand 20 has a workpiece carry-in position A that supports a workpiece carried in from a previous process (not shown), and a workpiece carry-in position A that supports a workpiece carried in from a previous process (not shown), and a workpiece carry-in position A that supports a workpiece carried in from a previous process (not shown). It has a standby position B where it waits for the work to be transferred. Also,
A conveyor 24 for transporting the workpiece from the A position to the B position is attached to the support stand 20. This conveyor 24 has a structure including a chain or belt to which a hook 24a that engages with a workpiece is fixed. Hook 2
Only 4a may protrude from the upper surface of the support base 20.

Further, this support stand 20 is provided with a transfer device 25 for transporting the workpiece from the position B to the position indicated by C on the turntable 23. This transfer device 25 is composed of a pneumatic cylinder, and has two operating parts 2.
9a and 29b are provided.

This transfer device 25 transfers the short workpiece 2
After positioning one end of the front and back ends of the short workpiece 2 at the processing position, shift it in the longitudinal direction on the turntable 23 and positioning the other end of the short workpiece 2 at the processing position. It is also used as a means of moving workpieces. In this way, in order to use the transfer device 25 as a workpiece moving means for shifting the short workpiece 2 on the turntable 23, the transfer rod 29 is supported so as to be set at two positions, the forward limit position and the intermediate position. The stand 20a is provided with a fixed stopper 27 that determines the forward limit position of the transport rod 29, and a movable stopper 28 that is attached to the rod of the pneumatic cylinder 26 and determines the intermediate position of the transport rod 29.
That is, when the movable stopper 28 is kept in the retracted state, the actuating part 29a at the tip of the transfer rod 29 of the transfer device 25 comes into contact with the fixed stopper 27 and is stopped, and when the movable stopper 28 is kept in the pushed out state. The actuating portion 29a at the tip of the conveying rod 29 is adapted to come into contact with the movable stopper 28 and be stopped at a position closer to this side than in the above case. In addition, each operating part 29a, 29b
When the transport rod 29 is retracted, for example, the transport rod 29 is moved so as not to interfere with the workpiece at position B.
9 can be rotated.

In order to process the end of a long workpiece 1 using such a processing device, first, the long workpiece 1, which has been brought into position A shown in FIG. Then, it is set on the turntable 23 by the transfer device 25 (position C). The outer diameter of the turntable 23 is set so that the ends of the workpiece 1 do not interfere with each other during machining, and the long workpiece 1 is positioned so that its front and rear ends 1a and 1b are different from each other in the machining position. It is located and clamped onto the turntable 23 so as to be placed.

In this state, first, as shown in Fig. 2A, the turntable 23 is indexed to the -90° side to process the rear end portion 1a of the long workpiece 1, and then the rear end portion 1a of the long workpiece 1 is processed.
The front end portion 1b of the long workpiece 1 is machined by indexing the turntable 23 to the +90° side as shown in FIG. As a result, the front and rear ends are processed, and the second
As shown in Figure C, the long workpiece 1 is returned to the 0° position (original position) and unclamped.
It is transferred to the next process by the tonsure device 25. At this time, the movable stopper 28 of the pneumatic cylinder 26 is in the pushed-out state, and the forward position of the transport rod 29 of the transfer device 25 is restricted. In other words, when the transport rod 29 is advanced until the actuating portion 29a of the transport rod 29 comes into contact with the movable stopper 28, the long workpiece 1
is conveyed to position D shown in FIG. 1 and removed from the turntable 23.

Next, in order to process the end of the short workpiece 2, first, the short workpiece 2 carried in to position A is conveyed from position A to position B in the figure by the conveyor 24, and transferred to the turntable by the transfer device 25. 23 (position C in Figure 1). At this time, the rear end portion 2a of the short workpiece 2 is located and clamped so as to be placed at the processing position.

In this state, first, as shown in FIG. 3A, the turntable 23 is indexed to the -90° side and the rear end 2a of the short workpiece 2 is machined, and then the rear end 2a of the short workpiece 2 is machined.
Return the turntable 23 to the 0° position (original position) as shown in . Then, the short workpiece 2 is unlocated and unclamped and moved forward by the transfer rod 29 of the transfer device 25 so that the front end 2b of the short workpiece 2 is placed at the processing position. At this time, movable stopper 2
8 is in a retracted state, and the operating portion 29 of the transport rod 29 of the transfer device 25
a comes into contact with the fixed stopper 27 and is stopped, and the front end 2b of the short workpiece 2 is transferred by the actuating section 29b so as to be at the processing position. Locate and clamp the short workpiece 2 at this position, and
As shown in Figure C, by indexing the turntable 23 to the +90° side, it becomes possible to process the front end 2b of the short workpiece 2. As a result, the machining of both the front and rear ends 2a and 2b is completed, and the turntable 23 is returned to the 0° position (original position) as shown in FIG. transported to. At this time, the movable stopper 28 is pushed out, and the actuating portion 29a of the transport rod 29 of the transfer device 25 comes into contact with the fixed stopper 27.

Note that the same front and rear end machining can be performed on three or more types of workpieces having two or more short workpieces for a long workpiece. Further, in the above embodiment, the processing position is made to coincide with the outer peripheral surface position of the turntable 23, but it is also possible to shift it to an arbitrary position.

FIG. 4 is a diagram showing a workpiece end processing apparatus according to another embodiment of the present invention. In this embodiment, the short workpiece is machined without using the movable stopper 28 in the previous embodiment. After one end of the front and rear ends of the workpiece is positioned at the processing position, the short workpiece is shifted in the longitudinal direction on the turntable, and the other end of the short workpiece is positioned at the processing position. A shift device 31 is provided on the turntable 23 as a moving means. This shift device 31 is composed of a pneumatic cylinder 32, and a push plate 34 is attached to the tip of a rod 33 of the pneumatic cylinder 32. After processing the rear end portion 1a or 2a as shown in FIG. 5A, while indexing the turntable 23 to the state shown in FIG. By transporting the workpiece 2 to the processing position, both front and rear ends of the long workpiece 1 and the short workpiece 2 can be processed in the same manner as in the above embodiment. After processing, the turntable 23 is returned to the 0° position (original position) as shown in FIG. 5C and transported to the next process. Moreover, cutting can also be performed by using a grinding wheel as the processing tool 22 without using a drill.

(Effects of the invention) As described above, the workpiece end processing device according to the invention positions one end of the short workpiece at the processing position, shifts the workpiece on the turntable, and then cuts the other end of the short workpiece. Since it is equipped with a workpiece moving means that positions the workpiece at the processing position, and both ends of multiple types of workpieces can be processed on the same turntable, multiple types of workpieces can be processed using only one machine tool and transport device. Edge machining is now possible, and many types of workpieces can be processed and produced efficiently with extremely small-scale equipment, without the need for large-scale equipment equipped with multiple machine tools, unlike conventional equipment.

[Brief explanation of the drawing]

FIG. 1 is a plan layout of a workpiece end processing device according to an embodiment of the present invention, and FIGS. 2A to 3C and 3A to D are process explanations showing processing procedures using the device shown in FIG. 1. 4 is a plan layout of a workpiece edge processing device according to another embodiment of the present invention, FIGS. 5A to 5C are process explanatory diagrams using the device shown in FIG. 3, and FIG. 7A to 7F are process explanatory diagrams showing conventional processing steps. 1... Long workpiece, 2... Short workpiece, 21...
... Machine tool, 22 ... Processing tool, 23 ... Turntable, 24 ... Conveyor, 25 ... Transfer device, 27 ... Fixed stopper, 28 ...
Movable stopper, 31...shift device.

Claims (1)

[Scope of utility model registration request] A plurality of types of workpieces having different longitudinal dimensions are placed on a turntable, and both ends of the workpieces in the longitudinal direction are processed using a processing tool of a machine tool installed adjacent to the turntable. In the workpiece end processing device, when a long workpiece having the largest longitudinal dimension among the plurality of types of workpieces is placed on the turntable, both the front and rear ends of the long workpiece in the longitudinal direction are The outer diameter of the turntable is set such that the outer diameter of the turntable is the processing position of the processing tool relative to the turntable, and a short workpiece whose longitudinal dimension is shorter than the long workpiece is Workpiece moving means for positioning one end of the front and rear ends at the processing position and then shifting the short workpiece in the longitudinal direction on the turntable to position the other end of the short workpiece at the processing position. 1. A workpiece edge processing device, comprising: a workpiece end processing device, which is capable of processing both ends of a plurality of types of workpieces on the same turntable.