JPH06734A - Line system for machine tool - Google Patents

Abstract

PURPOSE:To provide a line system for machine tools which is provided with a plurality of machine tools, such as a lathes, and eliminates a turn-over support table used when a work the one side of which is machined by a device at a first process is fed to a device at a second process and the other side being non-machined is machined, commonly uses a process cell wherein a line system for machine tools is premised on an assumption, facilitates the line system, and pursues Q, C, and D. CONSTITUTION:In a line system wherein a plurality of machine tools are horizontally arranged, in order, a specified size and shape are used in common with the machine tools and the machine tools brought into a common use with each other are freely positioned at intervals of a specified distance from a lathe cell 5 for a first process to a lathe cell 7 for a second process and a lathe cell 9 for a third process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line system of a machine tool in which a plurality of machine tools are arranged and a line system is provided from the work carry-in to the work process through the work carry-out.

[0002]

2. Description of the Related Art Conventionally, in a line system in which a plurality of machine tools, for example, lathes are sequentially arranged in a horizontal direction, a guide rail of the same level is provided above each lathe, and each Gandry robot is hung on the guide rail. The material work is supplied to the Gandry robot of the lathe for the first process, the supplied material work is transported to the machining position by the Gandry robot and mounted, and the first machining is completed on the lathe for the first process. Then, it was transferred to the lathe for the second process by the Gandry robot.

In this case, the lathe for the second process is provided with a reversing cradle for receiving the work after the first machining, and the direction of the work after the first machining is reversed to supply it to the lathe for the second process. Was configured into. As a result, the work that was chucked at the time of machining in the lathe for the first step was machined on the chuck side in the lathe for the second step.

[0004]

As described above, when considering a connecting system of machine tools, for example, a lathe, the individual constituent cells are similar to each other in order to achieve the function of the entire system. Since it is generally the case that they are slightly different for each reason, there is little commonality of the constituent cells, and it is difficult to change the organization of the lines and the correspondence is low. In addition, there are drawbacks such as high cost due to the provision of a reversing cradle, frequent design mistakes, quality, cost, and delivery (Q, C, D) delays in production preparation. there were.

The present invention has been made in view of the above circumstances, and an object thereof is to eliminate the reversing cradle and the like and standardize each machine tool (cell) on the premise of a machine tool line system. , Line system simplification and Q, C, D
It is intended to provide a machine tool line system that pursues the following.

[0006]

In order to achieve the above-mentioned object, the present invention provides a machine tool line system in which a plurality of machine tools are sequentially arranged in the horizontal direction. It is characterized in that the machine tools are provided at fixed intervals so that they can be freely positioned.

[0007]

According to the machine tool line system configured as described above, the size of each machine tool from the machine tool for the first process to the machine tool for the nth process is made common, and the machine tools for the constant interval are provided. By arranging each line, it is possible to easily change the knitting of the line and freely change the process according to the process of working the work, while maintaining the quality, reducing the cost and complying with the delivery date.

[0008]

EXAMPLE An example of the present invention will be described in detail below with respect to a lathe cell.

A machine tool line system 1 shown in FIG.
Is a three-machine connecting line using three lathe cells,
It is assembled from a stocker 3 that stores the material work W _O , a lathe cell 5 for the first process, a lathe cell 7 for the second process, a lathe cell 9 for the third process, and a bucket 11 that receives the processed work W _A. There is.

The stocker 3 is a raw material work W _O which is a raw material of the processed work W _A which becomes a product through the three steps of this embodiment.
Although not shown in the drawing, the device is equipped with a carry-out device for carrying out one material work W _O.

The lathe cell 5 for the first step, the lathe cell 7 for the second step, and the lathe 9 for the third step all have a main body 13 of the same size, and the bed height and the position of the headstock 15 are also common. Each of the main bodies 13 is provided with a positioning flange 17 protruding from the main body 13 on both side surfaces of the main body 13 facing the adjacent machine. The positioning flange 17 is provided with a constant length in the left-right direction from the main body 13, and is mounted for positioning between machine tools and various devices (Gandry robot etc. described later). The positioning flange 17 facilitates accurate positioning between adjacent machines.

A guide rail 19 extending in the horizontal direction is installed above the lathe cells 5, 7 and 9 of the first step, the second step and the third step, respectively. Is provided with a gantry robot 21 which is movable.

As shown in FIG. 1, the Gundry robot 21 has a three-position stop type robot hand 23 at its tip.
Are provided via the vertical shaft 25. The vertical shaft 25 is a shaft for moving the three-position stop type robot hand 23 in the vertical direction (Y-axis direction), and the vertical shaft 25 is vertically provided from a robot main body 27 which is movably engaged with the guide rail 19. ing. The robot main body 27 includes a horizontal movement drive device (not shown) that moves the Gandry robot 21 in the horizontal direction (B-axis direction) and stops positioning, and the vertical shaft 25 in the vertical direction (Y-axis direction). A vertical movement driving device (not shown) for moving and stopping positioning is provided.

The three-position stop type robot hand 23 has
As shown in FIGS. 2 and 3, a base plate 31 is provided at the lower end of the vertical shaft 25 via a block 29, and a right-angled plate 33 facing downward is provided on the base plate 31. A rotary actuator 35 is attached to the lower side of the base plate 31,
Swing shafts 35a and 35b are provided on both sides so as to project. A first arm 37 is attached to these swing shafts 35a.
The second arms 39 are fixed to b.

These first arm 37 and second arm 3
A chuck plate 45 having a material hand chuck 43 and a product hand chuck 41 assembled on the lower side of 9
And its upper end is fixed to the first arm 37 and the second arm 39.

A stopper cam 47 is attached to the outside of the second arm 39.
7 is a half-moon shaped cam, and a link 49 is provided on the cam surface.
A stop bolt 51, which is provided so as to be adjustable, abuts on the chuck plate 45 to regulate the rotation of the actuator 27 and stop the chuck plate 45 at a position perpendicular to the position shown in FIG. In addition, the link 49
Is engaged with a piston rod 53a of a cylinder 53 provided at an inner corner of the right-angled plate 33, and urges the cylinder 53 to swing a link 49 to regulate a stopper cam 47.

Stop bolts 55 and 57 are provided on both ends of the base plate 31 (on the left and right sides in FIG. 2) so that they can be freely adjusted.
When the actuator 35 is rotated when 9 is separated from the stopper cam 47, the chuck plate 4
5 is rotated toward the front side or the back side in FIG. 2, abuts on either the stop bolt 55 or the stop bolt 57, and is stopped to stop at three positions.

Stopping at these three positions is shown in FIG.
As shown in (b) and (c), when the cylinder 53 is operated in the direction of the arrow, the link 49 moves the stopper cam 47.
To the free state. When the actuator 35 is rotated in the counterclockwise direction, the chuck plate 45 is rotated in the counterclockwise direction, comes into contact with the stop bolt 57, is stopped, and is in the first position, and the material hand chuck 43 and the product hand chuck 43. The chuck surface of 41 faces downward (see FIG. 4A).

Next, when the link 49 is opened and the actuator 35 is rotated clockwise, as shown in FIG.
As shown in (b), the chuck plate 45 is rotated clockwise, and the chuck plate 45 comes into contact with the stop bolt 55 on the left side and is stopped to be in the second position. The chuck surface faces upward and is in a state of 180 ° corresponding to the first position.

Finally, by operating the cylinder 53 while rotating the actuator 35 counterclockwise, the stop bolt 51 of the link 49 contacts the cam surface 47a of the stopper cam 47, and the chuck plate 4
It is the third position in which 5 is stopped vertically.

The above-mentioned three-position stop type robot hand 23
As shown in FIG. 5, the chuck plate 45 of the lathe cell 5 for the first step is in the third position, and the hand chuck 41 for the product grips the workpiece W ₁ processed in the first step, When the work W ₁ is moved to the position of, the work W ₁ becomes below the product hand chuck 41, and overlaps with the chuck plate 45, which is the second position of the second process lathe cell 7, which has been waiting in advance, and the work W ₁ is moved up and down. Axis 2
By the operation of 5, the work W ₁ is transferred to and grasped by the material hand chuck 43 of the lathe cell 7 for the second step.
Then, after the 3-position stop type robot hand 23 on the lathe cell 5 side for the first step is returned to the ascending position, the chuck plate 45 on the lathe cell 7 side for the second step rises and the machining position of the lathe cell 7 for the second step ( It is moved to the right side of FIG. 1).

Next, the headstock 15 of the lathe cell 7 for the second process
Since the second-process machined work W ₂ already exists in the 3rd stop lathe robot hand 23 of the lathe cell 7 for the second process,
The chuck plate 45 is moved to the third position and the vertical shaft 25 is lowered. And the product hand chuck 41
The workpiece W ₂ which has been processed in the second step is gripped by, and then the workpiece W ₁ which has been processed in the first step is set on the headstock 15 as shown in FIG.

Thereafter, the transfer from the lathe cell 7 for the second step to the lathe cell 9 for the third step is performed in the same manner, and the workpiece W ₃ processed in the third step in the lathe cell 9 for the third step is shown in FIG. The conveyor device 59 shown in FIG.

As described above, in the machine tool line system 1 of this embodiment, all lines from the stocker 3 to the bucket 11 are systemized, and as a machine tool, the lathe cell 5 for the first process and the lathe cell for the second process are used. 7 and the lathe cell 9 for the third process are commonly used, and the distance between the machines is determined by the positioning flange 1
Since the constant intervals are provided by 7, even if the lathe cell 7 for the second step is not required to be processed, for example, even if the lathe cell 9 for the third step is moved to the position of the lathe cell 7 for the second step, the lathe cell 7 can be shared. You can easily rearrange the lines. Further, even when a new process cell is added between the lathe cell 5 for the first process and the lathe cell 9 for the third process, if the new process cell is common, It can be easily rearranged as in the embodiment.

The present invention is not limited to the above-mentioned embodiment, but by making appropriate changes,
It can also be implemented in other modes.

[0026]

As described above, according to the present invention,
Since the configuration is as described in the claims,
A process in which the reversing cradle, which is another device placed between the machines arranged in parallel, is abolished, and the work is sent by, for example, a 3-position stop type robot hand provided on the machine tool, assuming a machine tool line system. It is possible to propose a line system for machine tools that uses cells in common and facilitates the line system and pursues quality, cost, and delivery (Q, C, D).

[Brief description of drawings]

FIG. 1 is a side view of a line system of a machine tool according to an embodiment of the present invention.

FIG. 2 is a partial front sectional view of a three-position stop type robot hand, which is a main part of FIG.

FIG. 3 is a right side view of FIG.

FIG. 4 is an operation explanatory view of the three-position stop type robot hand of FIG.

FIG. 5 is an operation diagram for transferring a work from the lathe cell for the first step to the lathe cell for the second step by the hand chuck of FIG. 2.

FIG. 6 is a work attachment operation diagram of the second step lathe cell by the hand chuck of FIG. 2;

[Explanation of symbols]

 1 Machine Tool Line System 17 Positioning Flange 21 Gandry Robot 23 3 Position Stop Robot Hand

Claims (1)

[Claims] 1. In a machine tool line system in which a plurality of machine tools are sequentially arranged in a horizontal direction, each machine tool is made common, and each machine tool is provided so as to be freely positionable at a constant interval. Machine tool line system.