JPH06238502A - Work supply device of lathe - Google Patents

Abstract

PURPOSE:To provide a device possible to drive unmanned operation for a long period of time, easy to automate, capable of saving a space of a factory including a carrier route of a material and supplying a work which is long in the length in the axial direction. CONSTITUTION:On an outer end extension of a relative spindle of a lathe 1 furnished with the spindle 7 having a through hole 46 which is a supply route of a work, a second axial direction delivery device 6 to deliver the work toward the through hole 46 is arranged, and on the back of the lathe 1, a stocker 2 of a lengthy material and a first axial direction delivery device 3 to intermittently transfer one piece of the lengthy material moved from the stocker 2 are arranged. The delivery direction of the first axial direction delivery device 3 is roughly in parallel with the spindle 7 of the lathe 1 and the opposite direction of the delivery direction of the second axial direction delivery device 6, and on an end part in the delivery direction of the first axial direction delivery device 3, a cutter 4 is arranged, and a lateral direction transfer route 5 to introduce the work cut by the cutter 4 from its cutting position to the delivery position of the second axial direction delivery device 6 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for feeding a work cut out from a long material in a direction perpendicular to an axis to a lathe.

[0002]

2. Description of the Related Art Conventionally, the means shown in FIGS. 6 to 9 has been used as a means for supplying a work to a lathe when continuously processing a work of a predetermined length from a long material as a raw material.

In FIGS. 6 and 7, a long material is cut into a predetermined size in a material storage area and conveyed to a processing site.
The cut workpieces are mounted on the stocker 2 attached to the lathe 1, and the loader 55 supplies the workpieces on the stocker 2 to the lathe 1 one by one. Here, what is shown in FIG. 6 is that the work is supplied to the processing region 47 through the through hole provided in the main shaft 7 of the lathe, and a material having a relatively long work length (shaft material) can be supplied. There is. On the other hand, the one shown in FIG. 7 supplies the work to the processing region 47 from the front or the upper side of the lathe, and is widely used as a method of supplying a work having a relatively short axial dimension.

The one shown in FIG. 8 uses a so-called bar feeder 56 to directly feed the tip of a long material to a processing region 47 through a through hole provided in the main shaft 7 of the lathe 1 and rotate the whole long material. After processing the tip part by cutting, the processed tip part is cut off with a parting tool. The bar feeder 56 includes an axial feeding device that intermittently feeds the long material in the axial direction, and also includes a support unit that rotatably supports the long material.

Further, the one shown in FIG.
The loader 58 with a cutting machine is provided, and the burst stocker 57 intermittently displaces a stock table for storing a predetermined amount of long material and one long material moved from this stock table in the axial direction. And an axial feeding device for transferring. Further, the loader 58 with a cutting machine includes a cutting device that cuts the tip of the long material fed from the burster 57 in a direction perpendicular to the axis with a predetermined length, and the work after cutting from the front or above of the lathe 1. The robot hand is sent to the area 47.

[0006]

The structure shown in FIG. 6 and FIG. 7 requires cutting and therefore a large number of works to be conveyed and aligned on the stocker 2, and the conveyance and the alignment of the works are automated. However, there is a drawback that it is difficult to perform continuous unmanned operation for a long time.

On the other hand, in the structure shown in FIG. 8, since the entire long material must be rotated during processing of the work, there is a problem of whirling of the material, etc., and the processing speed cannot be increased so much. There is a drawback in that the processing cycle time becomes long because the cutting work of the material called parting off is required in the lathe. Further, since a long bar feeder protrudes to the side of the lathe 1, there is a problem that a large space is required for arranging the equipment.

The structure shown in FIG. 9 is characterized in that the processing cycle time is not reduced as compared with the structure shown in FIG. 8, but since the long burster 57 projects largely toward the front side of the lathe 1, the structure shown in FIG. As described above, there are problems that the space efficiency is poor and the axial length of the work that can be supplied is also limited.

Therefore, the present invention solves all the problems of the conventional structure shown in FIGS. 6 to 9, enables unmanned operation for a long time, facilitates mechanization of work transfer, etc., and is space efficient during machine installation. It is an object of the present invention to provide a work supply device for a lathe, which is high in cost, can save space in a factory including a material transfer route, and can supply a work with a long axial length.

[0010]

A work supply device for a lathe according to the present invention provides a work on an extension of an outer end of the main shaft 7 of a lathe 1 having a main shaft 7 having a through hole 46 serving as a work supply path. Second axial feed device 6 for feeding toward the through hole
Is disposed behind the lathe 1, and a stocker 2 of a long material and a first axial feeding device 3 for intermittently transferring one long material moved from the stocker are arranged. The feed direction of the first axial feed device is substantially parallel to the spindle 7 of the lathe and is opposite to the feed direction of the second axial feed device 6, and the end portion of the first axial feed device 3 in the feed direction. Is provided with a cutter 4 for cutting the end of the long material in the direction perpendicular to the axis, and a lateral transfer path 5 for guiding the work cut by the cutter from the cutting position to the feed path of the second axial feed device 6. Is provided.

[0011]

The long material, which is a raw material, is conveyed and mounted on the stocker 2 arranged behind the lathe 1 by a crane or the like. The long material on the stocker 2 moves one by one to the feed passage of the first axial feeding device 3, and the first axial feeding device 3
Sends intermittently one of the moving materials toward the cutter 4. The cutter 4 performs a cutting operation every time the first axial feeding device 3 feeds a material, and cuts a work of a desired length from a long material. The work cut by the cutter 4 moves to the feed passage of the second axial feed device 6 through the lateral conveyance path, and the second axial feed device moves the moved work in the axial direction. Through the through hole 46 provided in the main shaft 7 of the lathe 1 to the processing area 47.

In the loader having the above-mentioned structure, since the material of the work to be processed by the lathe 1 is stocked near the lathe 1 as a long material, it is easy to mechanize the transportation of the material and it is possible to carry out a long time operation. It is possible to stock a sufficient amount of material necessary for the continuous operation of in the vicinity of the lathe 1. Further, since the work previously cut into a predetermined length is supplied to the lathe 1, the machining cycle time of the work in the lathe is not reduced. Further, since the work is supplied to the processing region 47 through the through hole of the main shaft 7, the length of the work that can be supplied is not limited, and a shaft material having a long axial length can be supplied. The layout of the entire machine including the lathe 1 is a plane rectangular shape, so space efficiency is good, the material is supplied from the back side of the machine, and the front of the lathe 1 is largely opened, so that operability and machine operation are improved. It has excellent visibility.

[0013]

EXAMPLE An example shown in the drawings will be described below. FIG. 1 is an overall plan view showing an embodiment of the present invention, showing an example in which a work feed device of the present invention is provided on a two-spindle facing lathe 1. In FIG. 1, 2 is a stocker, 3 is a first axial feed device, 4 is a cutter, 5 is a lateral transfer path, and 6 is a second axial feed device.

The lathe 1 has two main shafts 7 and 8 facing each other, and each of the main shafts 7 and 8 has a through hole in its axial center. The first spindle 7 is pivotally supported by a first spindle stock 10 fixed to a bed 9 and rotates at a fixed position. On the other hand, the second spindle 8 is pivotally supported by a second spindle stock 11 mounted on the bed 9 so as to be movable in the spindle direction (Z-axis direction), and is close to and separable from the first spindle 7. The bed 9 is provided with a respective tool rest that cooperates with the first main spindle 7 and the second main spindle 8 for machining, but is omitted in the drawing.

As the stocker 2, a known tilted stocker as shown in FIG. 2 can be used. The slant stocker 2 stores the long members 15 side by side on a slanted stock base 14, and a stopper 16 is provided between the slant stocker 2 and the first axial feed device 3. The stock table 14 is provided with a push-up bracket 18 that moves up and down by a cylinder 17, and the push-up bracket 18 has a slanted push-up piece 19 that pushes up the long member 15 in the front row when the push-up bracket 18 moves upward. , The long material 15 pushed up is the inclined push-up piece 1
It rolls along 9 and falls into the groove-shaped feed passage 20 of the first axial feed device 3.

Further, as the stocker 2, as shown in FIG. 3, the long member 15 accommodated in the stock case 22 is pushed up by the inclined table 24 which rises along the front wall 23 of the stock case, and one long member It is also possible to have a structure in which only the scale member 15 is left on the inclined table 24 and is dropped into the feed passage 20.

The first axial feed device 3 includes a feed passage 20.
The pusher 27 is configured to travel along and the drive device 28 for driving the pusher 27. As the drive device 28, for example, a chain drive device is used. That is, the chain 31 wound between the chain sprockets 29 and 30 provided at both ends of the feed passage 20 is connected to the pusher 27, and the sprocket 30 on the cutter 4 side is intermittently driven by the drive device 28, whereby the feed passage 20 The long material dropped inside is transferred to the cutter 4 side by a predetermined length. A slit 32 through which the pusher 27 passes is provided at the bottom of the feed passage 20.

As the cutter 4, it is preferable to use a disc grinder or a circular saw because it has a simple structure and it is not necessary to rotate a long long material. In the illustrated embodiment, an example in which a disc grinder is used as the cutter 4 is shown. The disc grinder 33 and its drive motor 34 are mounted on a movable base 36 which is slidable along a guide 35 in a direction orthogonal to the feeding direction of the long material, and a cylinder 37 for moving the movable base 36 forward and backward is provided. Has been. The disc grinder 33 advances after the long material in the feed passage 20 has been fed by the first axial feeding device 3 for a predetermined length, and cuts off the tip end of the fed long material. Although not shown in the figure, a vise for clamping the tip of the long material at the time of cutting is provided as needed.

As the lateral transfer path 5, a structure similar to the slant stocker of the long material described above is used.
That is, as shown in FIG. 5, an inclined table 39 extending below the cutting position of the long member 15 is provided, and the cut workpiece 40 is provided on the tip of the inclined table 39 after dropping onto the inclined table 39. The stopper 41 or the workpiece that has been cut by the stopper is stopped by coming into contact with the workpiece, which is temporarily stored on the inclined table 39. Then, the most up-to-date workpiece 40 is pushed up by the push-up bracket 54 which is moved upward by the cylinder 53 at a predetermined timing, and the workpiece 40 overcoming the stopper 41 is dropped into the groove-shaped feed passage 42 of the second axial feeding device 6. .

The second axial feed device 6 has a slender push rod 43 in the work feed direction, and the push rod 43 has a base end fixed to a slider 45 of a rodless cylinder 44 and is cantilevered. Is supported by
It has a length substantially equal to that of the first main shaft 7. The workpiece fed from the lateral transfer path 5 to the second axial feeding device 6 falls between the push rod 43 and the lathe 1, and the forward movement of the push rod 43 (movement toward the lathe 1 side) causes It is sent to the processing area 47 of the lathe 1 through the through hole 46 of the first spindle.

The forward end of the push rod 43 is set according to the length of the work piece 40 by a limit switch or a proximity sensor 48. When the push rod 43 reaches the forward end, the push rod 43 moves to the chuck 49 of the first spindle. A gripping command is given, and the first chuck 49 grips the supplied workpiece 40. After that, the push rod 43 is retracted to the retracted limit, the first spindle 7 is rotated, and the supplied workpiece 40 is subjected to predetermined processing.

A sleeve matching the outer diameter of the work piece 40 is fitted in the through hole 46 of the first spindle, and the inserted work piece is supplied to the working area 47 in a largely eccentric state, or the working area 47. Make sure that the workpieces supplied to the do not hang down.

The work finished machining on the side of the first spindle 7 is transferred to the chuck 51 of the second spindle, and the second spindle 8 is moved.
Moves backward (moves away from the first spindle), the next workpiece is supplied to the machining area 47 of the first spindle 7 and gripped by the chuck 49 of the first spindle in the same procedure as described above. The machining on the side of the first spindle 7 and the machining on the side of the second spindle 8 are concurrently performed. Then, when the processing on both sides of the first spindle and the second spindle is completed, the second chuck 51 is held by the first chuck 49 by bringing the second spindle 8 close to the first spindle 7 side with the second chuck 51 opened. With the work, the work on the second spindle side is pushed into the through hole 52 of the second spindle, and if necessary, the finger of the unloader grips the tip of the work protruding to the rear end of the second spindle (anti-first spindle side). Then, the processed work is discharged to the outside of the machine.

By the same operation, a workpiece of a predetermined length is continuously unmanned processed from a long material mounted on the stocker 2. The feed length of the long material for each one-time intermittent feed by the first axial feed device 3 is controlled by the rotation speed of the feed motor 28 or a stopper 59 (see FIG. 1) at the feed end of the long material 15. It is set by providing.

[0025]

According to the apparatus of the present invention described above,
It is easy to mechanize material transportation, and a large amount of material can be stocked, enabling long-term unmanned continuous operation,
The machining cycle time of the work is not reduced.
Further, since the work is supplied through the through hole of the main shaft, it is possible to supply a shaft material having a long axial length. Further, since the equipment layout including the lathe has a planar rectangular shape, space efficiency is good, and the operability of the machine and the visibility of the machine operation are excellent.

[Brief description of drawings]

FIG. 1 is a schematic overall plan view of an embodiment.

FIG. 2 is a side view showing a stocker and a first axial feeding device.

FIG. 3 is a side view showing another example of the stocker and the first axial feeding device.

FIG. 4 is a perspective view showing an example of a cutting device.

FIG. 5 is a side view showing a lateral transfer path and a second axial feeding device.

FIG. 6 is a schematic plan view of a first conventional example.

FIG. 7 is a schematic plan view of a second conventional example.

FIG. 8 is a schematic plan view of a third conventional example.

FIG. 9 is a schematic plan view of a fourth conventional example.

[Explanation of symbols]

 1 2 Spindle facing lathe 2 Stocker 3 Axial feed device 4 Cutter 5 Lateral transfer path 6 Axial feed device 7 Spindle

Claims (1)

[Claims] 1. A work is fed toward the through hole on an outer end extension of the main shaft (7) of a lathe (1) having a main shaft (7) having a through hole (46) serving as a work supply path. The second axial feed device (6) is arranged, and the long stocker (2) behind the lathe (1) and one long material moved from this stocker are intermittently transferred. The axial feed device (3) is arranged, and the feed direction of the first axial feed device is substantially parallel to the main shaft (7) of the lathe and the feed direction of the second axial feed device (6). In the opposite direction, a cutter (4) for cutting the tip of the long material in the direction perpendicular to the axis is arranged at the end of the first axial feeding device (3) in the feeding direction, and is cut by the cutter. A work supply device for a lathe, which is provided with a lateral transfer path (5) for guiding a work from its cutting position to a feed path of a second axial feed device (6).