KR0164689B1 - Loading and unloading device of cnc lathe - Google Patents

Abstract

The present invention relates to a loading and unloading device and a method of swinging a swing arm consisting of a loading arm and an unloading arm about a rotational axis. In the conventional loading and unloading apparatus of a CNC lathe, the swing arm 12 during a machining operation of a material Is stopped from the stand-by position until the workpiece is finished and the loading and unloading operation is performed while the swing arm 12 rotates from the position of the next workpiece to the unloading position. Although there was a problem that the overall work takes a long time, in the present invention, the swing arm is moved up and down by a vertical conveying means such as a hydraulic cylinder along a guide rail provided in a vertical direction in which a fixed part fixed by a rotating shaft is used, and the material to be processed next. The entire work by allowing the preparation work of the tool to be carried out simultaneously during the work And so reduce the liver.

Description

CNC lathe loading and unloading device and method

1 is a front view of the apparatus of the present invention.

2 is a right side view of the device of the present invention.

3 is an operating state diagram of the apparatus of the present invention,

(a) is the operating state during loading.

(b) is the operation state ascending to the standby position after the loading operation.

(c) is an operating state in which the loading arm grips the material to be processed in the standby position.

(d) is an operation state in which the unloading arm grips the completed material by descending to the working position.

(e) shows the operating state during loading and unloading operations.

4 is a front view of the device according to the prior art.

5 is an operational state diagram of a device according to the prior art,

(a) is the operating state during loading.

(b) is a state waiting in the standby position.

(c) is a state of holding the object in the loading arm and the unloading arm, respectively.

(e) shows the operating state during loading and unloading operations.

6 is a schematic diagram showing a state in which a workpiece is gripped by a swing arm of the apparatus of the present invention.

7 is an operating state diagram schematically showing the entire system of the apparatus of the present invention.

* Explanation of symbols for main parts of the drawings

1: Swing cylinder 2: Piston rod

3: rotating shaft 4: loading arm

5: unloading arm 6: chuck

7: guide rail 8: piston rod

9: cylinder 11: body

12: swing arm 13,13 ': gripper

14 material 15 up and down feed

16: material support 17: fluid supply hose

The present invention relates to an apparatus and method for loading and unloading a CNC lathe in which a swinging arm consisting of a loading arm and an unloading arm swings around a rotation axis and performs a loading and unloading operation. The present invention relates to an apparatus and method for loading and unloading a CNC lathe, which allows the preparation of the next material to be processed while being transported up and down, thereby greatly reducing the working time.

Lathes are machine tools that mainly perform rotary cutting operations. Recently, automatic lathes, that is, CNC lathes, which are composed of a servo mechanism and a control system for controlling them, are used for rapid and precise operation.

In this CNC lathe, a loading operation for moving and fixing a material to be processed to a chuck, a rotational cutting operation performed by contacting a tool with the surface of the material while the chuck is rotated, and a chucked material It is configured to automatically perform unloading operations which are separated from the moving to another place in a series. In conventional CNC lathes, loading and unloading operations are carried out at the front end as shown in FIG. 13 ') is composed of a loading arm (4) attached to each and an unloading arm (5) coupled to form a predetermined angle with the loading arm, swing arm (12) configured to swing around the axis of rotation (3) And loading and unloading operation is performed by a loading and unloading device composed of a swing cylinder (1) is connected to the swing arm 12, the front end of the piston rod (2) so that the swing arm swings.

As such, the conventional apparatus is loaded and unloaded in the order as shown in FIG. 5, and in the initial state, the gripper 13 of the loading arm 4 is loaded as shown in FIG. The swing arm 12 in a state where the material to be processed is held rotates counterclockwise about the rotation axis 3 as the swing cylinder 10 is operated (extension of the piston rod 2), thereby loading arm 4 The material in the gripper 13 of the holder is fixed to the chuck 6.

When the above loading operation is completed, as shown in FIG. 5 (b), as the swing cylinder 1 is operated (partial contraction of the piston rod 2), the swing arm 12 is rotated clockwise to stand by. Will come to a stop. When the machining operation of the material is completed, as shown in FIG. 5 (c), the swing arm 12 is rotated clockwise as the swing cylinder 1 is operated again (full contraction of the piston rod 2). The loading arm 4 moves to the position where the workpiece is to be processed and the unloading arm 5 moves to the position of the finished workpiece in the chuck 6 and the workpieces are gripped by respective grips 13 and 13 ′. Done.

When the gripping is completed, as shown in FIG. 5 (d), as the swing cylinder 1 is operated again (full extension of the piston rod 2), the swing arm 12 rotates counterclockwise, The material at the gripper 13 of the loading arm 4 is loaded into the chuck 6, and the material at the gripper 13 ′ of the unloading arm 5 is moved to the unloading position.

However, in the conventional CNC lathe loading and unloading apparatus operated as described above, the swing arm 12 is stopped from the stand-by position until the workpiece is finished and the swing arm 12 is not finished until the workpiece is finished. Since the loading and unloading operation is performed while rotating from the position of the next material to the unloading position, the waiting time is high and the overall working time takes a long time. 12-15 seconds)

The present invention is to solve such a problem, the objective is to reduce the overall work time by reducing the intermediate waiting time by making the preparation work of the next material to be processed while the swing arm is transported up and down during the processing of the material In order to solve the above problem, the swing arm is fixed by the rotating shaft to be moved up and down by a vertical conveying means such as a hydraulic cylinder along the guide means installed in the up and down direction. It can be performed at the same time to shorten the overall work time.

The configuration of the present invention by the accompanying drawings in detail as follows.

FIG. 1 is a front view of the device of the present invention and FIG. 2 is a right side view of the device of the present invention. As shown in the above drawings, the loading arm 4 and the loading arm at which the grippers 13 and 13 'are attached to the front end, respectively, and a predetermined angle with the loading arm are shown. A swing arm (12) composed of an unloading arm (5) coupled to form a swinging shaft (3) and swinging about a rotation shaft (3), and a swinging rod (12) on the swinging arm (12). In the loading and unloading device consisting of a swing cylinder (1) to which the tip is connected; The upper and lower conveyance table 15 on which the rotating shaft 3 and the swing cylinder 1 of the swing arm 12 are fixed, and the upper and lower portions on the main body 11 side to guide the vertical movement of the upper and lower conveyance table 15. The guide rail 7 is installed long in the direction, and the end of the piston rod 8 is connected to the upper portion of the upper and lower conveyance table 15 is composed of a cylinder (9) installed in the vertical direction. The guide rail 7 may be replaced to guide the vertical conveyer 15 in the vertical direction, and the upper and lower conveyer 15 may be guide grooves or guide rollers for contacting and guiding the guide rails 7. Etc. may be provided.

The cylinder 9 also consists of a pneumatic cylinder or a hydraulic cylinder.

The apparatus of the present invention thus configured is operated as follows.

In the initial state, as shown in FIG. 3 (a), the swing cylinder 1 is operated by the swing arm 12 in which the material to be processed is gripped by the gripper 13 of the loading arm 4 (piston As the rod 2 is stretched, it is rotated counterclockwise about the rotation shaft 3 so that the material in the gripper 13 of the loading arm 4 is fixed to the chuck 6.

When the above loading operation is completed, as shown in FIG. 3 (b), the upper and lower carriages 15 are raised as the cylinder 9 is operated (contraction of the piston rod 8), and continuously the third As shown in (c), the swing cylinder 1 is operated (contraction of the piston rod 2) so that the swing arm 12 is rotated counterclockwise, and the swing arm is positioned until the material to be processed is located. The loading arm 4 of 12 rotates to grasp the material to be processed.

By the way, the operation of the swing arm in FIG. 3 (b), (c) is completely independent of the rotation cutting operation of the material previously fixed to the chuck 6, so that each operation at the same time without interference with each other It can be done.

When the rotary cutting operation in the chuck 6 is completed, as shown in FIG. 3 (d), the cylinder 9 is operated (extension of the piston rod 8) to unload the arm of the swing arm 12 ( 5) The gripped material 13 is gripped by the finished material, and as shown in FIG. 3E, the swing cylinder 1 is operated (extension of the piston rod 2) to swing. The arm 12 rotates in a counterclockwise direction so that the finished material in which the unloading arm 5 was in the gripper 13 'goes to the unloading position and at the same time the gripper 13 of the loading arm 4 The material that was in the came to the loading position to be loaded into the chuck (6). According to the operation process listed above, the continuous cutting operation of the CNC lathe is made.

On the other hand, the gripper 13 of the swing arm 12 is to hold the material 14 by the material support 16 coupled to the tip as shown in Figure 6, the material support 16 Has a structure in which the diameter can be divided into several pieces so that the diameter can be varied, so that the material 14 moves forward in a state where the diameter is largely adjusted so that the material 14 is located therein, and the diameter is reduced again to grasp the material 14. Will be done.

After the workpiece 14 is gripped in this manner, the swing arm 12 is rotated about the rotation axis 3 so that the workpiece 14 is positioned at the position of the chuck 6, and the workpiece is fixed by the chuck 6. Since the work support 16 of the gripper 13 is opened again, the work 14 is ready to be processed (see FIG. 3 (a) and (b) and FIG. 7).

In addition, the gripper 13 is connected to the fluid supply hose 17 as shown in Figure 2 and the inside of the cylinder structure because the material support 16 is the fluid supply hose 17 It is possible to reciprocate by the fluid supplied from the structure, which has been described in brief because the structure is also consistent with the prior art.

As described above, in the present invention, the gripper 13 rotates and at the same time the material support 16 is reciprocated, so that interference and smoothness do not occur during loading and unloading of the material 14. Work is possible.

That is, when the swing arm 12 rotates about the rotation axis 3, the work support 16 is in a retracted state so that the interference of the work 14 or the chuck 6 does not occur. When the grippers 13 and 13 ′ of the swing arm 12 come to the position of the workpiece 14 or the position of the chuck 6, the workpiece support 16 is advanced to load or unload a work. Will be done.

In this way, the device of the present invention is moved up and down by the cylinder 9 by hydraulic or pneumatic along the guide rail 7 in which the up and down carriage 15 on which the swing arm 12 is fixed by the rotary shaft 3 is installed in the up and down direction. In this way, the preparation work of the next processed material can be performed simultaneously during the material processing operation, thereby significantly reducing one cycle working time (conventionally, about 15 seconds, and about 5 seconds of the present invention), thereby reducing manufacturing costs due to rapid work. It is an excellent invention that makes it possible.

Claims (3)

It consists of a loading arm (4) having grippers (13, 13 ') attached to the tip and an unloading arm (5) formed at a predetermined angle with the loading arm, and composed of rocking material about the rotating shaft (3). In the loading and unloading device consisting of a swing arm (12) and a swing cylinder (1) is connected to the swing arm (12) the front end of the swing arm so that the swing arm swings; The upper and lower conveyance table 15 on which the rotating shaft 3 and the swing cylinder 1 of the swing arm 12 are fixed, and the upper and lower portions on the main body 11 side to guide the vertical movement of the upper and lower conveyance table 15. Guide rail 7 is installed in the long direction and the end of the piston rod (8) is connected to the upper portion of the up and down carriage 15, the CNC lathe characterized in that it consists of a cylinder (9) installed in the vertical direction Loading and unloading device. The loading and unloading apparatus of a CNC lathe according to claim 1, wherein the cylinder (9) consists of a pneumatic cylinder or a hydraulic cylinder. The swing arm 12 connected to the tip of the piston rod 2 by the swing cylinder 1 is swiveled about the rotation axis 3 so that the loading arm 4 and the unloading arm of the swing arm 12 are rotated. A loading and unloading method of a CNC lathe in which loading and unloading operations are performed in (5); At the same time as the rotary cutting operation by the chuck 6 after the loading operation by the loading arm 4, the upper and lower feeders 15 on which the swing cylinder 1 and the swing arm 12 are installed are operated. By the guide rail (7), the swing cylinder (1) in the raised position by the operation of gripping the next material to be processed in the loading arm is performed together with the loading and unloading of the CNC lathe Loading method.