JPH0644561Y2 - Pressurizing weight device for automatic bar feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a pressurizing weight device for an automatic bar feeder,
In particular, the present invention relates to a pressurizing weight device for an automatic bar feeder, which is combined so as to selectively interlock the movement of the feeding bar with the movement of the main spindle moving table of the main spindle moving type bar processing machine.

(Prior Art) Conventionally, the movement such as feeding or retreating of the feed bar in the automatic bar feeder is completely independent of the movement of the main shaft moving base of the main shaft moving type bar working machine.
When processing the next lot after the processing of one lot is completed during the processing cycle in the spindle moving type bar processing machine, the collet chuck of the spindle moving table opens and the spindle moving table moves backward by the machining amount and the collet chuck is used again. When the bar is held, a pressure is applied to the bar so that the bar is kept in contact with the stopper. There are mainly the following two devices for applying a pressurizing force to the bar in the automatic bar feeder having the conventional structure as described above.

That is, one of them uses a weight, and the rear end of the feeding bar of the automatic bar feeder is connected via a rope to a roller fixed to a shaft that suspends the weight so that it can be raised and lowered. I am configuring.

The other one uses a motor for driving the feeding bar, and this motor is used not only for advancing and retreating the feeding bar, but also for abutting the bar member as described above on the cut-off stopper. It is also used to apply pressure to the bar material.

(Problems to be solved by the invention) However, in the latter conventional device, it was satisfactory when the forward / backward movement speed of the main shaft moving base was 6 m / min or less, but recent main shaft moving type bar materials Based on the request to improve the processing efficiency of the processing machine, the automatic bar feeder and the main shaft moving type bar processing machine are operated as described above so that the back and forth movement speed of the main shaft moving table is about 12 / min. In the case of a combination in which the movement of the feed bar of the automatic bar feeder is selectively interlocked with the movement of the main shaft moving table of the main shaft moving type bar processing machine, Requires that the characteristics of the motor used in the automatic bar feeder be adapted to the above-mentioned configuration, and the control of the motor according to the operation of the automatic bar feeder and the spindle moving bar processing machine is complicated. There is a drawback that

On the other hand, in addition to the mechanical combination of the above-mentioned automatic bar feeder and the spindle moving type bar processing machine, there is a request to make the total length of the automatic bar feeder as short as possible. When changing the bar feeder, it is conceivable to change the configuration or arrangement of the feeding bar, but in this case, the change of the configuration or arrangement of the feeding bar may be changed after the feeding bar in the former prior art device. Since the ends are connected to the weight via the rope, the rope becomes a hindrance, and even if it is practically impossible or even possible, it is inevitably a very complicated structure.

Therefore, the object of the present invention is suitable when the automatic bar feeder and the spindle moving type bar machining machine are mechanically combined, and the pressurizing weight device for the automatic bar feeder has a simple structure. To provide.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention selectively links the movement of the feeding bar with the movement of the spindle moving table of the spindle moving bar processing machine. In the pressurizing weight device of the automatic bar feeder, which is combined with the above, a movement transmitting means for transmitting the movement of the spindle moving table of the spindle moving type bar processing machine, a feeding bar moving means for moving the feeding bar, and the movement. Connecting means for selectively connecting the transmitting means and the feed bar moving means, and the feed bar moving means,
A pressurizing weight device for an automatic bar feeder, which has a pressurizing weight that is wound up when the feed-in bar is retracted and is rewound when the feed-in bar is advanced.

(Example) Next, this invention is demonstrated with reference to drawings.

FIG. 1 is a schematic side view showing the device of the present invention, and FIG. 2 is a detailed view of a portion of the selective interlocking device.

In FIG. 1, the automatic bar feeder 10 has support legs 12 and 14, and a frame 16 is supported on these support legs.
Timing pulleys 18 and 20 are attached to the frame 16, and a timing belt 22 is hung on the timing pulleys 18 and 20. A feed-in bar 24 is attached to a part of the timing belt 22, and the feed-in bar 24 is moved by the timing belt 22 so as to move the spindle.
It is configured to advance toward 40 or be retracted from the spindle moving type bar processing machine 40. Selective interlocking device 30
(Details thereof will be described with reference to FIG. 2) is provided so as to selectively interlock the feed bar 24 of the automatic bar feeder 10 and the spindle moving table 42 of the spindle moving type bar processing machine 40. The timing pulley 20 described above constitutes a part thereof. Then, the weight 26 is provided in the selective interlocking device 30.
As described later, the weight 26 is configured to be wound up when the feed bar moves backward and rewound when the feed bar moves forward. Apply pressure to the bar when retreating.

Next, referring to FIG. 2, the selective interlocking device 30 has an electromagnetic clutch 32 attached to the frame 16, and the electromagnetic clutch 32 rotatably supports a rotating shaft 34 via a bearing 35. . The timing pulley 20 is fixed to the left side of the rotary shaft 34, and the winding pulley 27 is fixed to the extension of the timing pulley 20. A weight 26 is suspended from the winding pulley 27. A reduced diameter portion 34a is formed on the right side of the rotary shaft 34. The rotary shaft 34 is adjacent to the reduced diameter portion 34a thereof and the timing pulley 4
4 is rotatably mounted via a bearing 37. Reduced part 34a
Also, the substantially central portion thereof is also supported by the bearing 35, and the left side portion fixes the clutch plate 32b through the clutch plate attachment 39. A clutch plate 32a is attached to the right side surface of the above-mentioned timing pulley 44,
The clutch plate 32a faces the clutch plate 32b. A clutch plate 32c is attached to the right end of the reduced diameter portion 34a of the rotating shaft 34. The clutch plate 32c faces the clutch plate 32c and the motor 3
A clutch plate 32d rotated by 6 is provided.

When the electromagnetic clutch 32 is off, the rotating shaft 34 and the reduced diameter portion 34a are pressed to the right by a spring (not shown) provided in the electromagnetic clutch, and the clutch plate 32
The a and the clutch plate 32b are separated, and the clutch plate 32c and the clutch plate 32d are engaged. Therefore, when the motor 36 is operating, the rotation shaft 34 is rotated through the engagement of the clutch plates 32c and 32d, and the timing pulley 20 is rotated.
And the hoisting pulley 27 rotates, but the main shaft moving base 42
The timing pulley 44 associated with the movement of is not rotated. That is, in this case, the weight 26 is independent of the main shaft moving table 42 and exerts a pressurizing force.

On the other hand, when the electromagnetic clutch 32 is on, the clutch plate 32
a, the clutch plate 32b is engaged, and the clutch plate 32c and the clutch plate 32d are separated. Therefore, when the timing pulley 44 is rotated by the movement of the main shaft moving base 42, the rotary shaft 34 is rotated through the engagement of the clutch plates 32a and 32b and the clutch plate attachment 39.
Will be rotated. Thus, the feed bar 24 associated with the timing pulley 20 will be associated with the spindle carriage 42, and the weight 26, whether rolled up or unwound, is independent of applying pressure.

Next, the operation of the spindle moving type bar processing machine and the automatic bar feeding machine including the operation of the pressurizing weight device of the present invention will be briefly described.

When the feeding bar 24 holds the new bar material at the retracted position and starts to move forward toward the main shaft moving type bar material processing machine 40, the weight 26 is wound up and in a state in which a pressurizing force can be applied. The weight is unwound as the feeding bar 24 advances. When the feeding bar reaches the main shaft moving type bar processing machine and enters the processing cycle and the cutting process starts, the collet chuck (not shown) of the main shaft moving table is closed and the electromagnetic clutch 32 is turned on.

When the electromagnetic clutch 32 is turned on, the clutch plates 32a and 32b are engaged and the clutch plates 32c and 32d are separated. Therefore, the timing pulley 44 rotates according to the movement of the main shaft moving base 42, and the feeding bar 24 moves via the clutch plate attachment 39, the rotating shaft 34, and the timing pulley 22. That is,
The feed-in bar and the spindle moving base work together.

When the cutting of one lot is completed, the collet chuck is opened with the tip of the bar material being cut off and applied to the stopper 52. Therefore, the clutch plates 32a and 32b are separated from each other, and the clutch plates
32c and 32d are engaged. In this state, when the spindle movable die base 42 is retracted, if the motor 36 is not operating, the weight 26
Is in the state of being rewound and applies pressure to the bar. Next, the collet chuck is closed, the bar is held again, and the next lot is cut. At the end of the machining cycle, the feed bar is retracted and the weight is wound up at this time.

(Effect of the Invention) As described in detail above, the present invention is an automatic bar material combined so that the movement of the feeding bar is selectively interlocked with the movement of the main shaft moving table of the main shaft moving type bar processing machine. Since the pressurizing weight is provided for the feeder, the bar material can be processed precisely.

[Brief description of drawings]

FIG. 1 is a schematic side view showing the device of the present invention, and FIG. 2 is a detailed view of a portion of the selective interlocking device. 10 …… Automatic bar feeder, 18 …… Timing pulley, 20 …… Timing pulley, 24 …… Feed bar, 26 …… Weight, 30 …… Selective interlocking device, 32 …… Electromagnetic clutch, 34 …… Rotating Shaft, 40 …… Automatic bar feeder, 42 …… Spindle moving table.

Claims (2)

[Scope of utility model registration request] Claim: What is claimed is: 1. A pressurizing weight device for an automatic bar feeder, which is combined with a main shaft moving table of a main shaft moving type bar processing machine so as to selectively interlock the movement of a feeding bar with the main shaft moving type. Movement transmitting means for transmitting the movement of the spindle moving table of the bar processing machine, feeding bar moving means for moving the feeding bar, and connecting means for selectively connecting the movement transmitting means and the feeding bar moving means. A pressurizing weight device for an automatic bar feeder, comprising: a pressurizing weight, which is connected to the infeed bar moving means and is wound up when the infeed bar moves backward and rewound when the infeed bar moves forward. 2. The movement transmission means has a timing belt connected to a spindle moving base and a timing pulley on which the timing belt is hung, and the feed bar moving means connects the timing belt and the timing belt connected to the feed bar. Has a timing pulley hanging,
The connecting means comprises an electromagnetic clutch for selectively connecting a rotary shaft of one timing belt of the movement transmitting means and a rotary shaft of one timing belt of the feed bar moving means coaxial with the rotary shaft, The pressurizing weight is one of the feeding bar moving means.
The pressurizing weight device for an automatic bar feeder according to claim (1), characterized in that the pressurizing weight device is connected to the rotary shafts of two timing belts.