JPS5818162B2 - How to transport gang heads in machine tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a machine tool with interchangeable gearing heads that enables multi-face machining by replacing the gearing head in the spindle unit and mounting the workpiece on a rotary table in order to cope with high-mix, low-volume production. This invention relates to a method of transporting a gigang head.

Conventional machines only have one loop in the stockyard, and with a certain number of gearing heads and a certain order arrangement, it is sufficient to cut one workpiece, but in high-mix, low-volume production, When there are various changes in the workpiece, the gearing head must be installed and removed from the stockyard each time, resulting in a problem that an extremely large amount of time is wasted on the work.

The present invention was developed in view of the above-mentioned problems, and its purpose is to arrange a plurality of gearing heads in a stockyard from the beginning in order to fully cope with high-mix, low-volume production, and to It is an object of the present invention to provide a method for conveying a gearing head in a machine tool, which allows efficient conveyance operation in order to freely select a necessary gearing head and to enable sequential arrangement according to machining.

Hereinafter, the present invention will be explained with reference to the drawings.

Sl is a reference station in loop B, S3 is a processing station, S6 is a transport direction judgment station, S9 is a reference station in loop A, and the remaining stations S2. S4. S5. S7゜S8. S1
o, S11 is simply a station for stocking gag heads.

To explain the conveyance direction judgment station S6, which is important as a gag head conveyance system, this station is provided with detectors PSWI to PSW7 for identifying each of the gigang heads 01 to G7. This is to judge whether or not it has been done.

For this identification, as shown in FIG. 7, dogs D1 to D7 are attached to each Guyangrad at different positions, and detectors PSWI to PSW are attached to each dog.
7 is provided.

FIG. 2 shows a state in which various gigang heads are randomly arranged on a conveyance table (this may also be considered as a gigang head arrangement for a certain workpiece).

), each station S S S...Sl
l to each gigantic head G1. G2. G3...
・G7 is located.

As shown in Table 1 regarding machining of existing workpieces,
In the 4 steps of steps I to ■, the order of the gigantic head is G.
1. G2゜G3. Assume that G4 is designated and the rotary table index positions are designated as R1, R3, R4, and R2.

FIG. 3 shows a state in which each ganging head is conveyed from the state shown in FIG. 2 in the feeding direction shown in FIG. 1 using station S1 as a reference station, and is once arranged in a loop.

From the state shown in Fig. 3, the items necessary for selecting the gearing heads G1 to G4 specified in Table 1 necessary for the machining operation are transported and delivered into the transport loop A with station S9 as a reference, and unnecessary items are FIG. 4 shows a state in which the product is transported and delivered during the transport loop B with station S1 as a reference.

At this time, the selection of necessary or unnecessary gearing heads is completed.

Next, Figure 5 shows the state in which all the gearing heads have been transported and delivered into the conveyor loop B in the same way as Figure 3, but the difference from Figure 3 is that unnecessary items are lined up at the front, and unnecessary items are lined up at the front. Things are lined up at the back.

FIG. 6 shows the unnecessary gearing heads G5>06G7 being transported and delivered into the transport loop A, and the gearing heads necessary for machining being arranged in order according to the machining process, illustrating the state of preparation for machining.

The operation of the feeding mechanism between each station will be described in detail in a separate section, but as shown in Fig. 1, in the carrying loop B, the feeding is carried out counterclockwise as shown by the arrow, and in the carrying loop A, it is carried clockwise. All are composed of one hydraulic feed cylinder.

Next, the operation will be explained.

Figure 2 shows a state in which machining of a certain workpiece has been completed, and when another workpiece is to be machined next, the necessary gearing heads are arranged in the order of each process as shown in Table 1. As shown in Figure 3, station S1
All gearing heads 01~ during conveyance loop B based on
Transport and deliver G7.

Next, in order to select the gearing head necessary for processing from the state shown in Fig. 3, each gearing head is sequentially fed in conveyance loop B, and when the gearing head is conveyed to station S6, the gearing head specified by SWl in Table 1 is selected. If the gearing head is G5., it is transported to the transport loop A side. G6. G7
If so, it will be transported to the transport loop B side, and in transport loop A, the necessary gigang heads will be arranged with station S9 as the reference without any order, and in transport loop B, the unnecessary gigantic heads G5 will be arranged with station S1 as the reference.
j G7' j Completed placing G6.

This state is shown in FIG.

That is, the operation process from FIG. 3 to FIG. 4 is essentially the operation of selecting an unnecessary gigantic head.

Next, the operation process from Fig. 4 to Fig. 5 is the main point of the gearing head 0.
1 to G4, G1 as specified in SWl
．． G2. G4. This is the sequential arrangement operation of G3, and in the conveyance loop A, the state of G3. G1. G2. G4
is conveyed and rotated in loop A, and transferred to station S6.
When the gigantic head G1 comes, go to loop B, then G2
When the paper comes out, it goes to the transport loop B, and the order arrangement is carried out during the transport rotation.

FIG. 5 shows the state in which the sequential arrangement has been completed.

Operation starts from the state shown in Fig. 5, but at this time G
5. G7. G6 is sequentially fed through one station in loop P, G1 enters station S, and gearing head G1 docks with the drive box of the mechanical unit to begin machining operation.

At this time, of course, the rotary table side is electrically controlled to
It is determined as specified by W2.

The machining process progresses and the gearing head G5°G7. G6
is transported to station S6, this gearing head G5. G7. G6 is transported and delivered to the transport loop A side.

FIG. 6 shows one state of the machining cycle for this workpiece.

If 3 gearing heads are used for a certain process, 4
A transport cycle is carried out in the same manner as in case 1, except that transport loop B contains unnecessary material at the rear end, and is transported in transport loop B during the machining cycle together with the necessary gearing head.

Also, heads that do not enter the stockyard (loop A) may be removed from the machine.

In addition, when two gearing heads are used for a certain processing, station S4. One necessary gearing head is placed at each station S2, and without transporting that gearing head in the conveyance loop B, the gearing head is moved to station S4. S3. 54 between S2
2S3.53 = Machining is performed by repeating reciprocating conveyance as shown in S2.

Note that the feeding mechanism used in the conveying method of the present invention is the eighth one.
As shown in the figure, cylinder C1゜C2t C3t
C4t Cs t Cat C7 is used, and its structure is a normal means.

Electric circuits are also a common means of control.

As described in detail above, the present invention includes a reference station S1, a stock station S2, a processing station S3, and a stock station S4. S5, conveyance direction determination station S6, and stock station S11. S1o and reference station S1 are linked in this order to form conveyance loop B of gearing heads 01 to G7, and reference station S9 and stock station StotS
1□, conveyance direction judgment station S6, and stock station S7. S8 and reference station S9 are linked in this order to transport loop A of gigang heads 01 to G7.
In the conveyance process, the gearing heads are first distributed into groups of necessary and unnecessary gearing heads, and the essential gearing heads are transported and delivered to transport loop A, and the unnecessary gearing heads are delivered to transport loop B. Next, the gearing heads are transported in transport loop A. When the gearing head specified in advance by rotation enters the conveyance direction judgment station S6, this gearing head is conveyed to the conveying loop B side, and then the unnecessary gearing head is left in the conveying loop B, leaving the essential gearing head in the conveying loop B. Since it is arranged to be transported and delivered during conveyance loop A, multiple gearing heads are placed in the stockyard from the beginning in order to fully handle high-mix, low-volume production, and the necessary gearing heads can be freely selected according to the machining process. It is possible to carry out an efficient conveyance operation for selection and to enable sequential arrangement according to machining.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the configuration of one embodiment of the present invention, and FIGS. 2 to 6
The figure is an explanatory diagram of the operation, FIG. 7 is an explanatory diagram of the detection mechanism provided in the conveyance direction determination station, and FIG. 8 is an explanatory diagram of the cylinder arrangement position. A and B are transport loops, Sl and S9 are reference stations,
S3 is a processing station, S6 is a conveyance direction judgment station, S2. S4. S5. S7. S8. Sl. 811 is a stock station.

Claims (1)

[Claims] 1 Reference station S1 and stock station S
2, processing station S3 and stock station S4
．． S5, conveyance direction determination station S6, and stock station S11. S18 and reference station S1
are linked in this order to form a conveyance loop B of the gigang heads G1 to G7, and a reference station S9, a stock station 510jS11, a conveyance direction determination station S6, a stock station S7 . S8 and reference station S9 are linked in this order to create gigang head 01.
〜G7 is formed into a conveyance loop A, and in the conveyance process, it is first distributed to necessary and unnecessary gearing heads, and then delivered to the important gearing head. By rotating the gearing head in the transport loop A, when the gearing head specified in advance enters the transport direction determination station S6, this gearing head is transported to the transporting loop B side, and the next important gearing head is transferred to the transporting loop. A method for conveying a gearing head in a machine tool, characterized in that the unnecessary gearing head is left in the conveyor loop A and delivered to the conveyor loop A.