JPH03234439A - Processing system for work of different kind - Google Patents

Abstract

PURPOSE:To shorten the moving distance of a work transfer means and to shorten the cycle time of the system, by arranging the 1st work carry-in and 2nd work carry-out means of one part of processing devices and disposing the 2nd work carry-in and 1st work carry-out means with their arrangement on the other part. CONSTITUTION:On the right carry in and carry out device 11 arranged at the right side of a biaxial lathe 10 an A work carry in conveyor 17 carrying in an A work and a B work carry out conveyor 18 arranged at the left side of the lathe 10 are arranged with their arrangement vertically. Also, on the left carry in and carry out device 12 arranged at the left side of the lathe 10, an A work carry out conveyor 19 carrying out the A work and a B work carry in conveyor 20 carrying in the B work are arranged with their arrangement vertically. Consequently, the moving distance from a 1st work carry out means to 2nd work carry in means and the moving distance from a 2nd work carry out means to 1st work carry in means become shorter and the moving distance in X axial direction of the whole body becomes shorter, so the cycle time is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a machining system, and more particularly to a machining system for different types of workpieces when different types of workpieces are processed by a machining device having two machining sections.

[Conventional technology]

In general, a machining system for processing a workpiece consists of a processing device such as a lathe equipped with a chuck and tools to hold the workpiece, and a loading/unloading means such as a conveyor for loading and unloading the raw workpiece and the processed workpiece. and a transport means such as a gantry loader for transporting the workpiece between the processing section and the loading/unloading means.

With such a tank bottom, the material work is supplied to the vicinity of the processing device by a carry-in conveyor, and is loaded onto the processing device by a gantry loader or the like. The processed workpiece processed by the processing device is transported onto a carry-out conveyor by the gantry loader or the like, and is carried out by this carry-out conveyor.

In the above-mentioned cutting system, a machining device such as a two-axis lathe having two machining sections is sometimes arranged to improve machining efficiency. In such a processing apparatus having two processing sections, each processing section processes the same type of workpiece, or each processing section processes different types of workpieces at the same time. When processing different types of workpieces in each processing section, for example, A workpiece and B workpiece are sequentially supplied by a carry-in conveyor, and a loader attaches these to their respective chucks, and after processing, each workpiece is sequentially transferred to a carry-out conveyor. It is designed to be transported.

[Problem to be solved by the invention]

When processing different types of workpieces with a processing device having two processing sections as described above, if a pair of workpiece loading/unloading means were provided to transport each workpiece in turn, the transport efficiency would be poor and the processing time would be shortened. As a whole, it becomes very long. Therefore, it is conceivable to arrange loading and unloading means for each workpiece.

When carrying in and out means are provided for each workpiece, and a total of two pairs of carrying in and out means are arranged near the processing apparatus, the arrangement is as shown in FIG. 5, considering the conventional arrangement.

In FIG. 5, the processing apparatus has a right chuck 1 mounted on the right main spindle for processing A workpiece, and a left chuck 2 mounted on the left main shaft for processing B workpiece. Then, for the right side force of °ζ right chuck l, A workpiece carrying conveyor 3 and
B workpiece carrying-in conveyors 4 are arranged one above the other. Also, on the left side of the left chuck 2, there is a workpiece 1It
An IQ delivery conveyor 5 and a B workpiece delivery conveyor 6 are arranged vertically. A gantry loader 7 that is movable in the right direction (X-axis direction), up-down direction (X-axis direction), and front-rear direction (Y-axis direction) is arranged above the processing device.

In the system shown in FIG. 5, the procedure for loading and unloading work A and work B is as follows. Note that assuming the distances of each component in the X-axis direction as shown in FIG. 5, the gantry loader 7
The moving distance in the X-axis direction is shown in parentheses. The negative sign indicates that Country IJ-Tough has moved to the left in FIG.

■Move the gantry loader 7 to the A-work loading conveyor. (X : L) ■Grasp the material A workpiece and move it to the right chunk 1. (X: -L/2) ■ Unload the processed A workpiece from the right chuck 1, attach the raw A workpiece to the right chuck 1, and move the processed A workpiece to the A workpiece unloading container 5. (
X: L・3/2) ■ Place the processed A workpiece on the A workpiece delivery conveyor 5-h, and move it to the B workpiece delivery conveyor 4.

(X: 2L) ■Grasp material B workpiece and move it to left chuck 2.

(X Knee L・3/2) ■Uncut the processed B workpiece [1-], and
i Attach the B workpiece to the left chuck 2 and move it to the B workpiece unloading container 6. (X knee L/2) ■ Place the processed B workpiece on the B leak carry-out conveyor 6 and move it to the A workpiece carry-in conveyor 3.

(X: 2L) The above operations are repeated to process the A workpiece and the B workpiece with the right chuck 1 and the left chuck 2, respectively.

However, as is clear from FIG. 5, the gantry loader 7 must move a long distance in the X-axis direction in ■■■■, and the total moving distance in the X-axis direction during one cycle is
9L”. This poses a problem in that it takes time to transport the workpiece, and the machining cycle time becomes longer.

An object of the present invention is to provide a system for machining different types of work that can shorten cycle time.

[Means to solve the problem]

A system for machining different kinds of work according to the present invention includes a processing device having two processing sections, a workpiece loading/unloading means, and a workpiece conveying means.

The workpiece loading/unloading means includes a first workpiece loading means and a second workpiece loading means disposed on one side of the processing apparatus, and a second workpiece loading means and a first workpiece disposed on the other side of the processing apparatus. The first workpiece and the second workpiece are
This is for carrying in and out of workpieces. Further, the workpiece conveying means has two soak gripping parts, and conveys the workpiece between the processing apparatus and the workpiece loading/unloading means.

C Effect] In the present invention, different types of workpieces are respectively attached to two processing sections of a processing device, and different types of workpieces are simultaneously processed in these two processing sections.

At this time, the first workpiece carrying-in means and the second workpiece carrying-out means are provided on the same side of the processing apparatus, and the first workpiece carrying-out means and the second workpiece carrying-in means are arranged on the same side of the processing apparatus -ζ There is. Therefore, the moving distance from the first workpiece carrying-out means to the second workpiece carrying-in means and the moving distance from the second workpiece carrying-out means to the first workpiece carrying-in means are significantly shorter than in the past, and the overall movement in the X-axis direction The distance becomes shorter. Cycle times are therefore shortened.

〔Example〕

FIG. 1 is a front view of a system for machining different types of workpieces according to an embodiment of the present invention.

In the figure, this Kanji system is used as a processing device.
A shaft lathe 10, a right loading/unloading device 11 and a left loading/unloading device 12 for loading and unloading the workpiece, and a gantry loader for transporting the workpiece between the two-axis lathe IO and each loading/unloading device 11.12. 13.

The two-spindle lathe 10 has a right chuck 14 and a left chuck 15 attached to the tip of each main spindle to hold and rotate the workpiece.
and a pair of turrets 16 (only one of which is shown) equipped with tools for machining the workpieces held by the respective chucks 14 and 15. In the right carry-in/out device 11 placed on the right side of the two-axis lathe IO, an A-work carry-in conveyor 17 for carrying in the A-work and a B-work carry-out conveyor 18 for carrying out the B-work are arranged vertically side by side. has been done. In addition, in the left carry-in/out device 12 arranged on the left side of the two-axis lathe 10, an A-work carry-out conveyor 19 for carrying out the A-work and a B-work carry-in conveyor 20 for carrying in the B-work are arranged vertically. are arranged side by side.

A horizontally extending guide rail 21 is arranged above the front part of the two-spindle lathe 10. A gantry loader 13 is attached to the guide rail 21 so as to be movable in its extending direction. The gantry loader 13 includes a chuck section 22 for holding a work placed at the lower end, and a moving mechanism 23 placed at the upper end.

FIG. 2 shows details of the chuck portion 22 of the gantry loader 13.

The chuck portion 22 has a rotating shaft 25 that passes through the outer tube 24 . A bevel gear 26 is fixed to the lower end of the rotating shaft 25. A case 27 having a triangular cross section is fixed to the lower end of the outer cylinder 24, and the bevel gear 26 is disposed within the case 27. A chuck support block 2 having a triangular cross section is disposed so as to face the slope of the case 27.
The days are arranged. The chuck support block 28 is attached to the case 27 so as to be rotatable about the axis m. Chuck bodies 29 and 30 are provided on each of the two sides of the chuck support block 28 excluding the slope. Further, a bevel gear 31 that meshes with the bevel gear 26 is fixed to the slope of the chuck support block 28.

The gantry loader 13 includes a CPU, RAM, and ROM.
The system is equipped with a microcomputer consisting of the following components, and is controlled according to the flowchart shown in FIG.

Next, the operation will be explained.

When the apparatus is started, initial settings such as setting each part to the initial position are performed in step St. In step S2, it is determined whether there is a request for workpiece exchange (unloading and loading) from the two-spindle lathe 10 side. Also step S
In step 3, it is determined whether there is a command for other processing. If there is another command, the process moves from step S3 to step S4. In step S4, processing according to the command is performed, and the process returns to step S2. In this way, the gantry loader 13 waits for a workpiece exchange request or other commands from the two-axis lathe lO.

When there is a request for workpiece replacement from the two-axis lathe 10,
The process moves from step S2 to step S5. here,
A processed workpiece is attached to each chuck 14.15, and at the same time, the processed workpiece is unloaded and the material workpieces on each carry-in conveyor 17.20 are transferred to each chuck 14.1.
5 (see the schematic diagram in FIG. 4).

In step S5, the chuck section 22 of the gantry loader 13 is moved from the initial position to the A workpiece carrying-in conveyor 17. Note that in parentheses in each step, the moving distance in the X-axis direction is shown when the distance in the X-axis direction is set as shown in FIG. The negative sign indicates that the gantry loader 13 has moved to the left in FIG. Next, in step S6, the material A workpiece is gripped by one chuck body (here, chuck body 30) of the gantry loader 13. Next, in step S7, the material A workpiece is moved to the right chuck 14 while being gripped.

In step S8, the processed A workpiece mounted on the right chuck 14 is gripped by the other chuck body 29 and unloaded. In this state, the chuck support block 28 of the gantry loader 13 is rotated 180 degrees around the axis m, the chuck body 30 holding the material A workpiece is opposed to the right chuck 14, and the material A workpiece is transferred to the right chuck 14.
Attach to. The processed workpiece A unloaded in step S8 is moved to the workpiece A delivery conveyor 19 in step S9. And in step SlO,
The processed A workpiece held by the chuck main body 29 located below is released and placed on the A workpiece delivery conveyor 19.

In step Sll, the chuck portion 22 of the gantry loader 13 is moved to the B workpiece carrying-in conveyor 20. The movement operation in step 311 is performed by movement only in the front-back direction (Y-axis direction) and the up-down direction (X-axis direction). Next, in step S12, the material B workpiece on the B workpiece carrying-in conveyor 20 is gripped by the chuck body 29 facing downward. Then, in step S13, the chuck portion 22 is moved to the left chuck 15.

In step S14, the processed B workpiece mounted on the left chuck 15 is unloaded by the chuck body 30 with no workpiece gripped, and the chuck support block 28 is rotated to unload the raw B workpiece gripped by the chuck body 29. Attach it to the left chuck 15. Step S1
In step 5, the processed B workpiece gripped by the chuck body 30 is moved to the B workpiece delivery conveyor 18. Step 31
In step 6, the grip on the processed B workpiece held by the chuck body 30 is released, and the processed B workpiece is placed on the B workpiece delivery conveyor.

Next, in step 317, it is determined whether all the workpieces to be machined have been machined. If there are still workpieces to be machined, the process returns to step S2 and waits for the next workpiece exchange request. When the next workpiece exchange request is received from the 2-axis lathe IO, the steps 35 to 317 described above are performed.
Repeat the action.

Further, if it is determined in step S17 that all the workpieces to be machined have been machined, the process moves from step S17 to step 318. In step 31B, the chuck portion 22 is moved to the initial position, and the process returns to step S2.

In such an embodiment, the A workpiece carry-in conveyor 17 and the B workpiece carry-out conveyor 18 are arranged side by side on the right side of the two-axis lathe lO, and the A workpiece carry-out conveyor 19 and the B workpiece carry-in conveyor 20 are arranged on the left side of the two-axis lathe 10. Since the workpieces are arranged side by side, the A workpiece conveyor 19 to the B workpiece conveyor 19
When moving to the workpiece carry-in conveyor 22 (■) and when moving from the B workpiece carry-out conveyor 18 to the A workpiece carry-in conveyor 17, the moving distance in the X-axis becomes 0. Therefore, the moving distance in the X-axis direction is As shown in Fig. 4, the length increases only when moving from the right chuck 14 to the A-work carrying conveyor 19, and when moving from the left chuck 15 to the B-work carrying conveyor 18 (■). The moving distance becomes shorter. That is, the moving distance in the X-axis direction in FIG. 4 becomes "5L" in total, which is much shorter than "9L" in the conventional device shown in FIG.

This shortens the cycle time of the entire Kanji system.

[Other Embodiments] In the embodiments described above, the present invention was applied to a machining system equipped with a two-axis lathe, but the present invention can be similarly applied to other machining devices having two machining sections.

Further, in the above embodiment, the carry-in and carry-out conveyors in the right carry-in/out device 11 and the left carry-in/out device 12 are arranged vertically, respectively, but two conveyors may be arranged side by side in the front-back direction.

[Effects of the Invention] As described above, in the present invention, the first workpiece carrying-in means and the second workpiece carrying-out means are arranged side by side on one side of the processing apparatus, and the second workpiece carrying-in means and the first workpiece carrying-out means are arranged on the other side. By arranging the means side by side, the travel distance of the node transport means is shortened and the cycle time of the system is shortened.

[Brief explanation of drawings]

FIG. 1 is a front view of a gantry system according to an embodiment of the present invention, FIG. 2 is a partially sectional side view showing details of the chuck part of the gantry loader adopted in the system, and FIG. 3 is a side view of the gantry loader. 4 is a schematic diagram showing the transport route of a gantry loader, and FIG. 5 is a schematic diagram showing the transport route of a conventional Gantt IJ-loader. IO... 2-axis lathe, 11.12... Loading/unloading device,
13... Gantry loader, 14... Right chuck,
15...Left chuck, 17...A workpiece carry-in conveyor, 18...B workpiece carry-out conveyor, 19...A workpiece carry-out conveyor, 20...B workpiece carry-in] 7 Hair.

Claims (1)

[Claims] (1) A processing device having two processing sections, a first workpiece carrying-in means and a second workpiece carrying-out means arranged on one side of the processing device, and a second workpiece carrying-out means arranged on the other side of the processing device. It is composed of a workpiece loading means and a first workpiece carrying-out means, and has a workpiece loading/unloading means for loading and unloading the first and second workpieces, and two workpiece gripping parts, and has a workpiece loading/unloading means for carrying in and carrying out the first and second workpieces, and has a workpiece loading/unloading means that is connected to the processing apparatus and the workpiece loading/unloading means. A system for processing different types of workpieces, which is equipped with a workpiece transport means for transporting workpieces between the two.