JPS583603Y2 - Suriwari Souchinioker Pitsukuatsupusouchi - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a material pick-up device for an apparatus that performs surface cutting, grooving, etc. on a workpiece material in an automatic lathe operation.

Generally, in a splitting device, the material to be processed is inserted from a spindle into a chuck hole in a chuck section, carried to the cutter surface, and pressed into contact with the material to be processed.

Material often falls out of the chuck and cannot be processed, and especially small articles have a tendency to fall out of the chuck hole.

For this reason, in the past, efforts have been made to minimize the vibrations applied to the moving parts to prevent them from falling off, and the mechanisms of each moving part require complicated machining precision, making manufacturing cumbersome. A common method that could be considered is to lengthen the cycle time, but this would slow down the process and reduce work efficiency.

There was an inconvenience that high processing efficiency could not be achieved.

The present invention aims to eliminate these conventional drawbacks, and aims to provide a pick-up device for a sliding and splitting device that can improve processing efficiency without making the configuration of the chuck part complicated and expensive. It is something.

In the present invention, a material chuck section for picking up the material M to be processed is arranged so as to slide and rotate relative to a sliding cutter C, and the material held by the chuck section is cut by the sliding cutter. In this sliding and splitting device, an arm 2 having a material chuck part 1 with a chuck hole 1a is provided on a slider 4 so as to be able to rotate with a support shaft 3 parallel to the sliding direction, and a support shaft 3 for return in the turning direction is provided on the slider 4. The slider 4 is equipped with a spring 13 and is slidable in the axial direction on the base 5, and is rotatably provided on the arm 2 and operated by another support shaft 22 parallel to the support shaft 3. A rod 6 and a holding piece 7 are attached, and when the operating rod 6 is displaced by the rotation of the arm 2, it comes into contact with the operating rod 6 so as to remove the holding piece 1 located at the material entrance of the chuck part 1 from the entrance. A stopper 23 is provided on the slider 4, and when the arm 2 rotates, the operating rod 6 separates from the stopper 23, so that the weight of the operating rod 6 moves the presser piece 7 to the material entrance in accordance with the rotational displacement of the arm 2. This is a pickup device in a sliding/splitting device, characterized in that it is arranged so as to go in and out.

In the one shown, the arm 2 with the material chuck part 1
The mechanism for rotating the spindle from the spindle S position to the sliding cutter C position around the support shaft 3 is performed by rotating the support shaft 3 against the spring 13. Set up car 8.

A chain wheel 8 is hung with a chain wheel 8, and its tip is connected to a lever 11 by a buffer spring 10. This lever 11 is driven by a cam 12, and the movement of the lever 11 causes the chain wheel 8 to move. The wheel 8 rotates and connects the arm 2 via the support shaft 3.
is designed to make a rotating movement.

In this case, the spring 10 is secured by a pin 27 protruding from the lever 11 and plays two roles.

That is, one is for buffering when the chuck part 1 of the arm 2 is rotated around the support @3 by the movement of the lever 11 and comes to the position of the cutter C when the support shaft 3 rotates.

The other is to function as a relief without damaging the connection between the chain 9 and the pin 27 when the chain 9 moves during the reciprocating motion of the slider 4 (reciprocating in the axial direction of the support shaft 3). It is.

The position of the pin 27 on the lever 11 can be changed arbitrarily depending on the amount of movement of the slider 4, but it is best to set the pin 27 so that the spring safety groove formed on the pin 27 is at the center of the stroke of the chain 9. Good (see Figure 4).

When the rotational movement of the support shaft 3 is in the direction of the sliding cutter C, the lever 11 is rotated by the cam 12 against the spring 13 to pull the chino 9 and rotate the support shaft 3 clockwise.

In the return direction, the contact-driven lever 11 reaches the inactive portion of the cam 12 and becomes free, and the return force of the spring 13 causes the support shaft 3 to rotate counterclockwise, allowing each mechanism to follow.

In place of the chain wheel 8 and chain wheel 9, a combination of a gear, a rotating shaft, and a lever may be used.

In any case, the range of rotation movement is such that it reciprocates between the spundle S and the split cutter C as shown in the first figure, and the lever 11 is shifted to the position of the split cutter C by the cam 12, and the return is made by the chain wheel 8. The support shaft 3 connected to the chain wheel 8 and the lever 11 are adapted to be followed by a return spring, such as a helical spring 13, which is inserted between the chain wheel 8 and the slider 4.

Further, the support shaft 3 may be slid in the axial direction, but in this embodiment, the bearing portion 14 is placed on the slider 4 and the slider 4 is moved to the base 5.
It has a structure in which it is slidably fitted into the shaft and moves in the axial direction.
For this movement, that is, the movement in the direction of the spindle S is entrusted to the spring 18 stretched between the slider 4 and the main body F, and conversely, the movement away from the spindle S is entrusted to the spring 18.
This is done via levers 15, 16, 17 operated by a cam 15' against the elastic force of 8.

That is, when the slider 4 on the base 5 is moved toward the spindle S by the spring 18, the lever 17 connected to the slider 4 is connected to the pivotable lever 16 via the moving piece 33 and the support rod 40, and The protruding locking pin 36 abuts against the locking pin 37 and is connected to the lever 15, and the lever 15 becomes free at the action position of the cam 15' and is slid by the elasticity of the spring 18, so that the material M is inserted and held in the chuck hole 1a. Ru.

Further, the lever 15 is moved in the direction away from the spindle S by using the cam 15' against the spring 18.

(See FIG. 5) Moreover, the adjustment screw 20 on the bracket 19 provided on the slider 4 is used to determine the position of this movement range.

This is done by means of a bracket 21 provided on the base 5 that this screw 20 abuts.

In addition, a presser piece 7 is used to close or open the material entrance of the chuck hole 1a in the chuck part 1 using the operating rod 6.
is provided at one end of a support shaft 22 rotatably supported on the arm 2 and faces the chuck hole 1a;
When the operating rod 6 provided at the other end is displaced by the rotation of the arm 2, it may come into contact with the stopper 23, 24 or other protruding rod, and the holding piece 7 may be interposed at the entrance position of the chuck hole 1a or removed from the entrance position. The chuck part 1 is provided with a material holding pin that can be pushed out and retracted, and a holding piece 7 that is moved by an operating rod 6 is configured to open and close the chuck hole 1a by
It is also possible to press or release the material by moving the presser pin closer to or away from the presser pin.

Also, when the workpiece M inserted into the chuck hole 1a during the sliding process is brought to the sliding cutter C by the chuck part 1, when the operating rod 6 hits the stopper 23, the presser piece 7 moves into the chuck hole of the chuck part 1. When the inlet of 1a is opened and the operating rod 6 is separated from the stopper 23, the holding piece 7 is inserted into the chuck hole 1a in order to maintain a predetermined position due to the weight of the operating rod 6 despite the pivoting movement of the arm 2. In the positional relationship of the arm 2, which rotates when it moves within the range formed by touching the end surface of the material (position close to the cutter C), the presser piece 7 presses the workpiece material M.
It escapes from the end face side so that it does not interfere with end face machining.
Moreover, during the slotting process, the head of the material M is exposed in the case of a headed part, and the material M is supported in one direction without falling off, and is applied to the cutter C for the slotting process.

On the other hand, a rod (not shown) for pushing out the inserted processed material M may be provided in the chuck hole 1a.

In addition, the stopper 24 is located at the position of the sliding cutter C or the holding piece γ.
It may be omitted if there is no problem in machining the cutter C depending on the amount of closing to the material M.

In the figure, 25 is a support shaft, and 26 and 27 are pins that protrude from both ends of the lever 11.

28 is a positioning screw. 29 is fixed to the slider 4 with a support rod.

Reference numeral 30 is a favorite chute so that even if the material processed by the sliding cutter C is taken out by a material extrusion mechanism (not shown) or by the movement of the arm 2 itself, it can be dropped into the chute and recovered by a separate mechanism.

Numerals 31 and 32 are fixing screws, and 33 is a movable piece, which is positioned by a tightener 35 screwed onto a screw shaft 34 and whose return amount is adjusted.

36 and 37 are locking pins, and 38 and 39 are pivot shafts.

40 is a connecting rod.

Then, the splitting cutter C is rotated and driven, and the spindle S
Insert the material M into the chuck hole 1a of the chuck part 1.

That is, when a rod-shaped material M is extruded to a predetermined size by a weight or a motor by the spindle S (when the collet chuck is opened), one end of the extruded material M is immediately transferred to the chuck part 1.
The material M is inserted into the chuck hole 1a (the chuck part 1 is sent to a position aligned with the center of the spindle S through the arm 2 by operating the lever 15), and the material M is cut with a parting tool.

Normally, if the material is in the shape of a screw with a head, as in the illustrated example, there is no need for a backup, but in the case of bar-shaped materials, the chuck hole 1a is backed up as a hole that will not fall if pulled out in one direction, so in any case It is inserted and held in such a state that one end is exposed to the extent that it can be slotted.

When inserting the material M into the chuck hole 1a and when the material M held in the chuck part 1 of the arm 2 is transferred to the splitting cutter C and processed, the presser piece 7 is The operating rod 6 hits the stopper 23 and the chuck hole 1
a is in the open position.

(See Figure 2) When the material M is put into the chuck part 1 and cut, the pin 26 of the lever 11 of the cam 12 is brought to the operating position, and the rotation of the cam 12 causes the lever 11 to engage the spring 13 around the spindle 25. When it is rotated against the resistance and the chain wheel 8 is rotated via the chain 9, the support shaft 3 is rotated and the arm 2 is rotated.This movement causes the operating rod 6 to become vertical due to its own weight, so that the presser piece 7 is The material M of the chuck part 1 is shifted to one end and brought to the sliding cutter C together with the arm 2 while holding the material M.

[At this time, the presser piece 7 is in a retracted position so that one end surface of the material M can be slotted without any trouble, that is, the operating rod 6
hits the stopper 24.

This stopper 24 is a stopper for preventing the stamping piece 7 from closing (entering) one end surface of the material M more than necessary.

;The amount of closure is approximately 25 to 30% of the cross-sectional area of material M.]
.

On the other hand, the slider 4 is moved by the tension of the spring 18 by the operation of the levers 15, 16, and 17 by the cam operation, and the material M is pressed against the cutter C, so that the work to cut the surface to be processed can be performed accurately and efficiently. be.

After the sliding process is completed, the material M is taken out and collected from the chuck part 1 by the material extrusion mechanism, and the slider 4 is returned to the arm 2.
is returned to the spindle S side to prepare for the next operation.

For example, a protruding pin is inserted into the chuck hole 1a of the chuck part 1, and when the slitting process is completed and the arm 2 slides in the return direction (away from the slitting cutter C), it will be at a position facing the cutter C. If a fixing pin is left in place, when the ejecting pin is pressed against the fixing pin, the material M can be pushed out from the chuck hole 1a.

If the material M is long, the tip of the fixed pin is set to a size that allows it to be inserted into the chuck hole 1a without using the ejecting pin, and the movement of the arm 2 is used to eject the material M from the chuck part 1. All you have to do is take it out.

In the present invention, a mechanism for retaining the material inserted into the chuck portion is provided on an arm on a sliding member.

By interlocking the locking mechanism with the rotational movement of the arm, the material inserted into the chuck hole can be accurately prevented from falling out of the chuck hole, the arm can be moved, and the material can be picked up in a good condition. Productivity can be significantly improved without processing loss, and since the entire pick-up member is moved by the slider, there is little effect on vibrations. Even if there is vibration, the material is held in the chuck part by the holding piece and displaced, reducing the cycle time. There is no need to set up a timer, speeding up, achieving high machining efficiency, and enabling safe operation for the operator.Also, it can be used as a unified attachment, so it can be used with any type of automatic lathe. Not only can it be easily adapted to various applications, but also the chuck mechanism can be easily handled without the need for troublesome parts management due to the loss of the guard components when not in use, which would hinder work. It also simplifies the process and can be used to accurately hold the picked up material without requiring a special operating system to hold the material.The compact structure means less breakdowns and easy maintenance. There is an effect.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1G is a front view. FIG. 2 is a front view of a portion thereof, and FIG. 3 is a cutaway side view thereof. FIG. 4 is a plan view taken along line II in FIG. 1, and FIG. 5 is a partially cut side view taken along line II in FIG. 1... Material chuck part, 2... Arm, 3... Support shaft, 4... Slider, 5...
...Base 6...Operation rod, T...
... Presser piece, 8 ... Chain wheel, 9 ... Cheno 10 ... Spring, 11 ... Lever 12 ... Cam 13. .....Tilting spring, 14.....Bearing part. 15.16,17...Lever, 18...
・Spring, 19...Bracket, 20...
...Adjustment screw, 221...Bracket), 2
2, 25...Spindle, 23゜24...Stopper, 26, 27...Pin, 28...
...Positioning screw, 29... Support rod, 30...
... Chute, 31, 32 ... Fixing screw, 33 ... Moving piece. 34...Screw shaft, 35...Tightener, 36
, 3γ... Locking pinot, 38, 39...
Pivot shaft, 40... Communication support.

Claims (1)

[Claim for Utility Model Registration] A material chuck section for picking up a workpiece material M is arranged so as to slide and rotate relative to a sliding cutter C, and the material held by the chuck section is cut by the sliding cutter. In a sliding and splitting device designed for processing, an arm 2 having a material chuck portion 1 with a chuck hole is provided on a slider 4 so as to be able to rotate around a support shaft 3 parallel to the sliding direction, and the support shaft 3 is used for returning the turning direction. The slider 4 is provided on the base 5 so as to be slidable in the axial direction, and is rotatably provided on the arm 2, and attached to another support shaft 22 parallel to the support shaft 3. An operating rod 6 and a presser piece 7 are attached,
The slider 4 is provided with a stopper 23 that comes into contact with the operating rod 6 so that when the operating rod 6 is displaced by the rotation of the arm 2, the holding piece 7 located at the material entrance of the chuck section 1 is removed from the entrance. When the arm 2 pivots, the operating rod 6 is moved to the stopper 23.
A pick-up device for a slitting device, characterized in that a holding piece 7 is arranged so as to move in and out of a material inlet by the weight of the operating rod 6 in accordance with the rotational displacement of the arm-2 as the arm-2 moves further apart.