JPH0586401U - Round bar cutting device - Google Patents

Abstract

(57) [Abstract] [Purpose] As a round bar cutting device used for automatic processing of round bar end face, it is widely used for cutting round bar with reliable shaft operation and different shaft diameter and shaft length. Providing possible devices. [Structure] A V-shaped groove for mounting a round bar S is formed on the upper surface, and a V-shaped groove 17 is formed from below through a main rail 13A, 13B divided into two at the bottom of the V-shaped groove and a gap 14 between the main rails 13A, 13B.
Cut-out hook 18 that projects inward and is reciprocally movable in the longitudinal direction
And a stopper 19 that defines the cutting stop position of the round bar S by the cutting hook 18, and an auxiliary rail 15 that is separated from the main rails 13A and 13B is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a round bar cutting device used in an automatic machining device for a round bar end surface.

[0002]

[Prior Art]

 Conventionally, the end face machining of round bars used for machine parts has been done by the operator setting the round bar materials one by one at the machining position in front of the cutter, and then removing the machined round bars from the clamper after finishing the machining. It was carried out by manual work, but from the standpoint of saving labor and improving efficiency, supply of round bars, cutting, carrying in to the processing position, carrying out the processed round bars from the processing position. There is a demand for an automatic end face processing device that can perform a series of operations such as the above, fully automatically and continuously.

In order to meet such a demand, the inventor of the present invention cuts out a hopper that stores a round bar and a round bar that is continuously supplied from the hopper from a cutting position to a standby position. A round bar mainly composed of a device and a transfer means that carries the round bar from the standby position to the processing position on the front of the cutter that is held by the clamper, and carries the processed round bar from the processing position to the discharge position. I am thinking of an automatic processing device for the end face.

[0004]

[Problems to be solved by the device]

 By the way, in constructing the above-mentioned round bar processing device, the cutting device for cutting out the round bars continuously supplied from the hopper from the cutting position to the standby position where they are gripped by the conveying means (chuck member) In order to ensure the versatility of the entire processing equipment, it is necessary to have the flexibility to easily cope with changes in the shaft diameter and shaft length of the round bar material.

The present invention focuses on such a problem, and provides a round bar cutting device which is reliable in operation and can be widely used for cutting round bars having different shaft diameters and shaft lengths.

[0006]

[Means for Solving the Problems]

 In the device for cutting a round bar according to the present invention, a V groove for placing the round bar is formed on the upper surface, and the main rail divided into two parts at the bottom of the V groove and the gap between the main rails project from below into the V groove. It has a cutting hook that can reciprocate in the longitudinal direction, a stopper that defines the cutting stop position of the round bar by the cutting hook, and an auxiliary rail that is separated from the main rail. ..

[0007]

[Action]

 In this cutting device, the main rail that forms the V groove on the upper surface is divided into two parts at the bottom of the V groove, and the cutting hook reciprocates in the V groove in the longitudinal direction through the gap between the main rails. The pushing operation point of the cutting hook with respect to the round bar placed on the V groove is automatically positioned near the center of the end surface of the round bar, regardless of the shaft diameter. Therefore, the round bar cutting operation can be performed smoothly, and there is flexibility in changing the diameter of the round bar shaft. In addition, the main rail and the auxiliary rail that has a stopper that defines the cutting stop position of the round bar are arranged separately, so that the cutting bar hooks the round bar from the cutting position to the stopper and stops it. When cut out to the stop position, even if the shaft length of the round bar is different, the reference end of the round bar is positioned at a fixed position by the stopper, and the round bar laid on the main rail and the auxiliary rail serves as a conveying means. The chuck member can be stably gripped at its intermediate portion.

[0008]

【Example】

 Examples will be illustrated and described below. FIG. 1 shows an outline of a round bar cutting device according to the present invention together with a whole view of a round bar end face automatic processing device configured using the same.

As described above, the automatic processing apparatus for the end face of the round bar includes the hopper 1 for storing the round bar S and the round bar S continuously supplied from the hopper 1 from the cutting position A to the standby position. The cutting device 2 for cutting to B and the round bar S from the standby position B are carried into the processing position C on the front surface of the cutter (spindle head 5) held by the clamper 4, and the processed round bar S is cut from the processing position C. The transporting means 3 that carries out to the discharge position D is configured as a main element.

In this processing apparatus, a cutting device for cutting the round rods S continuously supplied from the hopper 1 one by one from the cutting position A to a standby position B which is gripped by the conveying means 3 (chuck member 22). As will be described in detail later, 2 has a V-shaped groove 17 for mounting the round bar S on the upper surface, and the main rails 13A and 13B divided into front and rear at the bottom of the V-shaped groove and between the main rails 13A and 13B. The main rail is provided with a cutting hook 18 which is projected from below into the V groove 17 through the gap 14 and reciprocates in the longitudinal direction, and a stopper 19 which defines a cutting stop position of the round bar S by the cutting hook 18. An auxiliary rail 15 is provided between 13A and 13B so as to be separated from the chuck position of the chuck member 22.

In addition, in FIG. 1, 6 is a side plate that divides the inside of the hopper 1 into left and right parts, 7 is a handle for sliding operation of the side plate 6 attached to the hopper side plate, and 8 is a round plate supplied from the hopper 1. An inclined bottom plate that rolls the rod S and drops it into the cutout position A on the main rails 13A and 13B, and 9 is an outlet of a shaft supply port (not shown) that is opened at the lower front surface of the hopper 1. An anti-bridge roller installed on top, 11 a drive motor thereof, 12 a handle for raising and lowering the anti-bridge roller 9, 16 a return roller provided on the inclined bottom plate 8 in the vicinity of the cutting position A, 20 and 21. Shows a rack and pinion mechanism for operating the return roller 16. Reference numerals 23, 24 and 25 denote respective cylinders for vertical and horizontal movements of the chuck member 22 constituting the conveying means 3 and 27, and 27 denotes a left and right spindle 26 via rack and pinion mechanisms 28 and 29. And a reference numeral 32 indicates a spindle motor which operates in a horizontal direction. Further, 30 is a round bar discharging chute provided directly below the discharging position D, and 31 is a jig attached to the clamper 4.

The cutting device 2 will be described in detail with reference to FIGS. 2 to 5.

On the upper surface of each of the main rails 13A and 13B, a round bar S continuously supplied from the hopper 1 falls from the front edge of the inclined bottom plate 8 to a cutout position A immediately below and is stably placed on it. A V-shaped groove 17 to be held is formed, and the bottom of the V-shaped groove 17 is divided into two before and after sandwiching the gap 14. The main rails 13A and 13B are mounted on the support plate 50 protruding forward from the bottom of the hopper 1, and the size and shape of the V groove 17 need to be changed according to the change in the shaft diameter of the round bar S. It can be easily replaced at any time. Therefore, in consideration of the convenience of work when replacing the rails, the main rails 13A and 13B are provided with pins 51 erected from the support plate 50 upright on the rail side, as shown in FIGS. 2 and 4. A mounting structure that does not require a tool to fit the hole 52 into the position is adopted. Reference numeral 53 denotes a guide stopper for the round bar S attached to the front rail 13A at the cutout position A.

A cutting hook 18, which is reciprocally moved in the longitudinal direction through the gap 14 between the two, projects from the inside of the V groove 17 of the main rails 13A and 13B. The cutting hook 18 pushes the shaft end surface of the round bar S which is placed on the V groove 17 of the main rails 13A and 13B, and cuts the round bar S from the cutting position A to the standby position B one by one. It plays the role of a member.

Details of the mounting structure and the operating mechanism of the cutting hook 18 are shown in FIGS. 2 and 4. The cutout hook 18 is supported by an air cylinder (rodless) 55 provided on the lower front surface of the support plate 50 via a mounting plate 56, and reciprocates left and right together with the cylinder 55 so as to travel in the V groove 17. Is becoming The cutout hook 18 has a hook center pinned to the mounting plate 56 so as to be swingable around a fulcrum 57, and the upper end of the cutout hook 18 extends from the slit hole 54 provided in the support plate 50 to the gap between the main rails 13A and 13B. It is positioned in the V groove 17 through 14 and the lower end of the hook is urged counterclockwise by the hook return spring 58 so that the lower end of the hook abuts against the contact block 59 provided on the mounting plate 56 in the upright posture. I am trying to do it. Thus, the cutting hook 18 keeps an upright posture in which the upper end of the cutting hook 18 is hooked on the shaft end surface of the round bar S when the round bar is cut out while traveling in the V groove 17 to the right, while traveling in the left direction. At the time of returning to the original position, while returning to the return spring 58, it is returned to the lower surface of the next cutting round bar already waiting at the cutting position A on the V groove 17 while taking a lowering posture. It will be.

Then, as shown in FIG. 5, the cutting device 2 is provided with an auxiliary rail 15 at an extension portion separated from the main rails 13A and 13B with a predetermined separation distance. The auxiliary rail 15 has a V groove 17 corresponding to the main rails 13A and 13B on the upper surface thereof, and also has a stopper 19 at the end portion against which the end surface of the round bar S abuts. The cutting stop position of the round bar S cut out by the cutting hook 18 is set. When the end surface of the round bar S is stopped by the stopper 19 of the auxiliary rail 15, the cut-out round bar S is located between the main rails 13A, 13B and the auxiliary rail 15 as shown by the chain double-dashed line in FIG. In this state, the intermediate portion of the round bar S is positioned at the standby position B where it is gripped by the chuck member 22 from both sides. The auxiliary rail 15 is provided to be movable up and down so as not to interfere with the operation when the round bar S is conveyed by the chuck member 22.

Next, the operation of the cutting device 2 will be described.

As shown in FIG. 2, the round bar S charged and stored in the hopper 1 rolls side by side on the inclined bottom plate 8 from the shaft supply port 10 so that the main rail 13A, It is continuously supplied toward 13B, drops from the front edge of the inclined bottom plate 8 onto the V groove 17 immediately below, and is held at the cutout position A. Then, the round bars S dropped into the cutting position A are cut out one by one by the stopper 19 of the auxiliary rail 15 as shown in FIG. It is cut out to the stop position (standby position B).

At this time, the main rails 13A and 13B constituting the cutting device 2 are divided into two at the bottom of the V groove, and the cutting hook 18 travels in the V groove 17 through the gap 14 between the main rails 13A and 13B. Therefore, the pushing operation point of the cutting hook 18 with respect to the round bar S on the V groove 17 is naturally positioned near the center of the end face of the round bar regardless of the shaft diameter. Therefore, one of the features is that the round bar cutting operation by the cutting hook 18 can be performed smoothly.

Further, since the main rails 13A and 13B are divided into two in the front and rear at the bottom of the V groove, and as described above, each rail is attached so as to be easily replaceable without tools, the shaft of the round bar S Even when it is necessary to change the V-groove size of the main rails 13A and 13B due to the change in diameter, the replacement work of the main rails 13A and 13B can be performed quickly and easily.

Furthermore, by disposing the main rails 13A and 13B and the auxiliary rail 15 having the stopper 19 that defines the cutting stop position of the round bar S, by separating the chuck position of the chuck member 22 from each other, When the round bar S is cut by the cutting hook 18 from the cutting position A to the cutting stop position (standby position) B where it abuts on the stopper 19, even if the shaft length of the round bar S is different, the stopper 19 Thus, the reference end is positioned at a fixed position, and the intermediate portion of the round bar S installed on the main rails 13A and 13B and the auxiliary rail 15 can be positioned at the chuck position of the chuck member 22. Immediately, if this cutting device 2 is used, even if the shaft length of the round bar S changes, the chuck member 22 can grasp the round bar S at an intermediate portion in a stable posture and wait It does not hinder the reception of the round bar S of the chuck member 22 at the position B 1.

Incidentally, the round bar S grasped from both sides by the chuck member 22 at the standby position B is then moved to the right side together with the chuck member 22 and inserted into the clamper 4, as also shown in FIG. It is clamped from both sides by the jig 31 of the clamper 4 and positioned at the processing position C. From this state, the cutter attached to the spindle head 5 is rotated and moved forward, and predetermined chamfering or end face cutting is performed on the end face of the round bar S positioned at the processing position C. After the end face processing is completed, the spindle head 5 is retracted this time, the clamper 4 is opened, and the processed round bar S extracted from the clamper 4 is moved to the left by the chuck member 22 to return to the origin. This time, after going up, it moved forward and carried out the round bar S to the discharge position D on the discharge chute 30, released the processed round bar S at this position, and then moved back and down to return to the origin. One cycle will be completed.

During the loading / unloading operation of the round bar S by the chuck member 22, the cutting hook 18 is returned to the original cutting start position and waits until the next round bar cutting. However, as mentioned above, since the cutting hook 18 is attached by the ratchet mechanism so that it can be raised and lowered, the cutting hook 18 dives under the lower surface of the cutting bar that has already been dropped into the cutting position A and is waiting. The returning operation can be performed smoothly, and no dead time is required for returning the cutting hook 18 to the origin.

As described in the above embodiment, the cutting device according to the present invention is a device for automatically processing the end face of a round bar, in which the round bars S continuously supplied from the hopper 1 are cut out one by one. Was devised in consideration of the use as a cutting means for cutting out from the above to the standby position B which is grasped by the chuck member 22 forming the conveying means 3, but for the purpose of cutting out a round bar (including a hollow material), Applications are generally of utility value.

[0025]

[Effect of the device]

 As described above, in the round bar cutting device according to the present invention, the main rail is divided into two parts that form the V groove, the cutting hook that runs in the V groove of the main rail in the longitudinal direction, and the round bar cutting device. Since the main rail and the auxiliary rails separated from each other have stoppers that define the cutting stop position, the round bar ensures the intended operation and has different shaft diameters and shaft lengths. A cutting device that can handle a wide range of cutting is realized. That is, the point for pushing the cutting hook with respect to the round bar placed on the V groove is positioned near the center of the end face of the round bar regardless of the shaft diameter, so that the round bar cutting operation can be performed smoothly and the shaft diameter can be changed. Is also flexible, and if the V-groove size etc. needs to be changed depending on the shaft diameter of the round bar, it can be easily dealt with by replacing the divided main rail, and the shaft length of the round bar is different. At the cutting stop position of the round bar, the reference end of the round bar is positioned by the stopper of the auxiliary rail, and the conveying means grips the middle part of the round bar installed between the main rail and the auxiliary rail to stabilize the round bar. It is possible to receive it.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a round bar cutting device together with a round bar end face automatic processing device in which the device is incorporated.

FIG. 2 is a cross-sectional view of a round bar cutting device.

FIG. 3 is a front view of a round bar cutting device.

FIG. 4 is an enlarged perspective view of a main part of a round bar cutting device.

FIG. 5 is an enlarged perspective view of a main part of a round bar cutting device.

[Explanation of symbols]

 S Round bar A Cutting position B Standing position C Processing position D Discharging position 1 Hopper 2 Cutting means 3 Conveying means 4 Clamper 5 Spindle head (cutter) 8 Inclined bottom plate 9 Bridge prevention roller 10 Shaft supply port 13A, 13B Main rail 14 Gap 15 Auxiliary rail 16 Return roller 17 V groove 18 Cutting hook 19 Stopper 22 Chuck member 32 Spindle motor 50 Support plate 51 Pin 52 Pin hole 53 Guide stopper 54 Slit hole 55 Rodless air cylinder 56 Mounting plate 57 Support point 58 Return spring 59 Reliable block

Claims (1)

[Scope of utility model registration request] 1. A V-shaped groove on which a round bar is placed is formed on an upper surface of the V-shaped groove, and the main rail is divided into two at the bottom of the V-shaped groove. A cutting device for a round bar, comprising: a cutting hook; and a stopper that defines a cutting stop position of the round bar by the cutting hook, and an auxiliary rail that is separated from the main rail.