JPH0288105A - Automatic working device of bar stock - Google Patents

Abstract

PURPOSE:To shorten the time required for the period after the working is finished until the next working of bar stock is started by allowing the bar stock, whose primary feed is finished, to pass through a chuck at the working part and temporarily restraining the movement in the direction of length and making the member of secondary feed to hold the rear end of the bar stock. CONSTITUTION:A bar stock W is supplied to a rail 26 and a base plate 24 is moved in the direction of width, the bar stock W is aligned on the center axis, and a clamper 20 is released and a chuck 5 is closed to restrain the remaining material of the bar stock processed before. When the chuck 5 is opened, a pressing member 27 advances the bar stock W until it protrudes from the chuck 5 discharging the remaining material W', the clamper 20 and the chuck 5 are closed, and the rear end of the bar stock W is held by a roller 52 and the front edge is restrained by the chuck 5. Successively, the base plate 24 is moved in the direction of width, the feed rod 30 on a rail 28 is aligned on the center axis and advanced, and a chucking member 29 can hold the rear end of the bar stock W as the top end of the bar stock W is restrained by the chuck 5. The bar stock W advances as the working proceeds and just before the working is finished leaving the remaining material unwrought, the feed arrow 30 retreats together with the pressing member 27 and the chucking member 29 leaves from the bar stock W.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an automatic bar processing device, and more specifically, the present invention relates to an automatic bar processing device, and more specifically, a bar processing section that continuously processes a bar material, and a bar processing section that continuously processes a bar material. The present invention relates to an automatic bar processing device equipped with a bar supply unit that supplies bar stock.

[Conventional technology]

By connecting in series a bar processing machine such as a lathe that cuts bar-shaped materials and a bar feeder that continuously supplies bar-shaped materials to this bar processing machine, continuous processing of bar-shaped materials is possible. 2. Description of the Related Art Automatic bar processing apparatuses are known that are configured to perform automatic bar processing.

The bar feeder used in such automatic bar processing equipment includes:
In order to shorten the overall length of the bar material feeding machine, a primary feed guide rail is provided that guides the pressing member that performs the primary feeding operation to advance the bar material by a predetermined amount toward the bar processing machine, and Secondary feed guide rails that guide the feed arrow that performs the secondary feed operation to advance the bar-shaped material are arranged in parallel, and the lateral shift of these guide rails allows the primary feed and secondary feed to be performed. A device configured to switch between the two has been proposed. For example, Japanese Patent Application No. 63-42927 filed by the present applicant.

[Problem to be solved by the invention]

However, in this type of bar feeder, the chucking member at the tip of the feed arrow is provided with a clamp member that grips the rear end portion of the bar-shaped material when transitioning from the next feeding operation to the secondary feeding operation.

In order to cause the chucking member at the tip of the feed arrow to grip the bar-shaped material using such a clamp member, the bar feeder requires a predetermined waiting time between the primary feeding operation and the secondary feeding operation.

In addition, in the bar feeder, after the processing of the bar material is completed, the chucking member releases the bar material until the next bar material is fed from the material shelf to the primary feeding guide rail. This required a complicated process. That is, the feed arrow is first retracted while gripping the remaining material, the retracted remaining material is restrained again by the clamp member, and then only the feed arrow is further retreated, thereby causing the remaining material to be caught in the chuck of the feed arrow. released from the king member.

Because of this process, in the above-mentioned bar feeder, a predetermined waiting time is required between the process of feeding the next new bar material after the processing of one bar material is completed.

Therefore, when such a bar feeder is used as a part of an automatic bar processing apparatus, there remains room for further improvement in the automatic bar processing apparatus as a whole.

The present invention has been developed in view of these points, and its first purpose is to shorten the time required for the transition process from the primary feeding operation to the secondary feeding operation, thereby improving the automatic bar processing apparatus. The objective is to shorten the time required to supply and process a single bar, that is, the cycle time.

A second object of the present invention is to - reduce the time required from the end of the last machining of one bar material to the start of machining of the next bar material, thereby reducing the cycle time in automatic bar processing equipment; The purpose is to shorten the time.

[Means and operations for solving the problem] In order to achieve the above object, the inventors first focused on the fact that the bar processing section already has a hanging chuck mechanism for restraining the bar.

In order to achieve the first object, a bar processing section having a chuck mechanism capable of gripping a bar material to be processed, and a primary processing section that advances the bar material by a predetermined amount toward the bar processing section. A bar feeder comprising a feeding member and a secondary feeding member that grips the rear end portion of the bar-shaped material advanced by the primary feeding member and further advances the bar-shaped material in accordance with the processing of the bar-shaped material processing section. The primary feeding member inserts the bar-shaped material into the chuck mechanism, and the chuck mechanism is configured such that the secondary feeding member inserts the bar-shaped material into the bar-shaped material at least after the secondary feeding member reaches the rear end of the bar-shaped material. The automatic bar processing apparatus was configured to restrain the bar-shaped material in the length direction until the rear end portion could be gripped.

With this configuration, the primarily fed bar-shaped material passes through the chuck mechanism of the bar processing section, and is temporarily restrained from moving in the longitudinal direction by this chuck mechanism.

Therefore, the member that performs the secondary feeding operation can grip the rear end portion of the bar from the rear. As a result, the bar gripping function of the bar processing section also functions to restrain the bar material during the transition from the primary feeding operation to the secondary feeding operation, and the clamping mechanism for restraining the bar material is used in the bar processing section. In addition, it is possible to shorten the waiting time required for the operation of the clamp mechanism.

In addition, in order to achieve the second object, the bar processing section includes a chuck mechanism capable of gripping the bar-shaped material to be processed, and the bar-shaped material is advanced by a predetermined amount toward the bar processing section. A bar material having a primary feeding member and a secondary feeding member that presses the rear end portion of the bar material advanced by the primary feeding member and further advances the bar material in accordance with the processing in the bar processing section. the chuck mechanism is configured to feed the rod-shaped material at least until the secondary feeding member can release the rear end portion of the rod-shaped material when the secondary feeding member retreats. An automatic bar processing device was configured to work in the length direction.

With this configuration, when the final processing is being performed on the bar-shaped material, the bar-shaped material is removed from the secondary feeding member by retracting only the secondary feeding member while the bar-shaped material is held in the chuck mechanism. can be done. Therefore, while the last processing of the bar-shaped material is being carried out, it is possible to perform the feeding operation of the new material to be processed next, and after the processing of one bar-shaped material is completed, the next The time required to start processing a rod-shaped material can be significantly shortened. Furthermore, it is possible to omit a clamping mechanism for the purpose of holding the remaining material in order to remove it from the secondary feeding member from the bar processing section.

〔Example〕

Embodiments of an automatic bar processing apparatus according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a partially omitted plan view showing the overall configuration of an automatic bar processing apparatus.

As shown in FIG. 1, the automatic bar processing device 2 includes a bar processing section 4 that performs cutting on a bar, and a bar W to be processed.
and a bar supply section 10 that supplies the bar material to the bar processing section 4. The bar processing section 4 has a spindle 6 equipped with a chuck 5 for gripping the bar W, and a cutting tool 8 for processing the bar W is disposed adjacent to the front of the spindle 6.

This chuck 5 is configured to be opened and closed by an actuator 7 disposed on the side of a spindle 6.

Further, the bar supply section 10 includes a stand 12.
a frame 14 supported by 12;
A bar supply mechanism 16 arranged above, a material shelf 18 arranged on the side of the frame 14 and on which a plurality of bars are placed,
The main component is a bar steady rest device 20 fixed to the front end portion of the frame 14.

The bar supply mechanism 16 includes a base plate 24 that can be moved in the width direction of the frame 14 by being guided by rails 22 and 22 fixed on the frame 14 by the operation of the motor 17.
A primary feeding guide rail 26 and a secondary feeding guide rail 28 extending parallel to the longitudinal direction of the frame 14 are arranged on the substrate 24. A pressing member 27 is attached to the primary feeding guide rail 26 so as to be slidable in the longitudinal direction, and a rod-shaped feeding member 27 with a chucking member 29 at the tip thereof is attached to the secondary feeding guide rail 28. Arrows 30 are arranged.

A chain 32 is fixed to the pressing member 27, and a chain 34 is fixed to the feed arrow 3o. Sprockets 38.40 are engaged with the chains 32 and 34, respectively, and each sprocket 38.40 is connected to the output shaft of a motor 3 disposed at the rear end of the base plate 24 via an electromagnetic clutch 42.44. has been done.

The electromagnetic clutch 42 includes an armature (not shown) fixed to the sprocket 38 and a rotor (not shown) that rotates integrally with the motor 36.
4 includes an armature (not shown) fixed to a sprocket 4o and a rotor (not shown) that rotates integrally with the motor 36. These electromagnetic clutches 42.4
4, each rotor and armature are connected when energized, thereby connecting the output shaft of the motor 36 and the sprocket 38.
．． 40 are configured to rotate together.

A material shelf 18 is provided on the side of the bar supply section 10, and the material shelf 18 has a support shaft 46 extending along the frame 14,
A plurality of push-up rods 48 connected to this support shaft 46 are provided. The push-up rod 48 performs a swinging movement about the support shaft 46 by the operation of the motor 50, and this swinging movement causes the tip of the push-up rod 48 to move the bar material W placed on the material shelf 18. Push up the bottom. As a result, the bar material W is transferred along the slope formed at the tip of the material shelf 18 and falls into the guide groove of the primary feed guide rail 26. This operation will be hereinafter referred to as a new material supply operation.

Further, the steady rest device 20 disposed at the tip of the frame 14 includes a plurality of rollers 52 for gripping the bar W from the side, and the rollers 52 are connected to a link mechanism (not shown).
It is connected to the actuator 54 via the actuator 54, and opens and closes by operating the actuator 54.

Operation of Automatic Bar Processing Apparatus FIGS. 2A to 2E schematically illustrate one cycle of operation of the automatic bar processing apparatus 2.

FIG. 2A corresponds to FIG. 1 and shows a state in which the bar material W is supplied to the primary feeding kite rail 26. FIG. From this state, first, the substrate 24 is moved in the width direction, and the bar W, together with the steady rest device 20 and the chuck 5, is aligned on the central axis of the spindle 6 (FIG. 2B). At this time, steady rest device 2
0 is open, while the chuck 5 is closed and holds the remaining material W' of the previously processed bar.

Next, the pressing member 27 pushes the rear end of the bar W forward, thereby starting the primary feeding operation, and the chuck 5 of the bar processing section 4 is released.

The pressing member 27 advances the bar W until the front end portion of the bar W protrudes in front of the chuck 5 . At this time, the tip of the bar W pushes the remaining material W' forward and discharges the remaining material W'. When the bar W advances to a predetermined position, the steady rest device 20 and the chuck 5 are closed, and the rear end portion of the bar W is gripped by the roller 52, and the front end portion is restrained by the chuck 5 (second C figure). (Then, the primary feeding operation ends.

Following the primary feeding operation, the substrate 24 is moved in the width direction, and the feeding arrow 30 on the secondary feeding guide rail 28, the steady rest device 20, and the chuck 5 are aligned on the central axis of the spindle 6. Next, the feed arrow 30 is advanced,
At this time, since the front end portion of the bar W is restrained by the chuck 5, the chucking member 29 of the feed arrow 30 can grip the rear end portion of the bar W (FIG. 2D).

From the state shown in FIG. 2D, the processing of the bar W and the associated secondary feeding operation start, and as the front end portion of the bar W is processed, it is pushed forward by the feed arrow 30, and finally the remaining material Processing of the bar W is completed, leaving W′. FIG. 2E shows a state immediately before the processing of the bar W is completed, that is, when the final processing is being performed on the bar W. At this time, 30 arrows
is retracted together with the suppressing member 27, and the chucking member 29
separates from the bar W. Therefore, only the feed arrow 30 is moved back, leaving the bar W being processed.

In this way, when the feed arrow 30 and the pressing member 27 retreat to the position shown in FIG. 2A, one cycle of operation of the automatic bar processing device 2 is completed, and the secondary feed guide rail 26 is
A new bar material W is supplied, and the bar processing device 2 will perform the operation of the next cycle.

Operation Control System for Automatic Bar Processing Machine FIGS. 3 and 4 show a schematic configuration diagram of the control system for the automatic bar processing machine 2 and a flowchart showing the details of control by the control unit shown in FIG. 3, respectively.

As shown in FIG. 3, the bar processing section 4 includes a processing state detection sensor 65 that detects whether the bar W is being processed and outputs a signal Sa, and a chuck 5 attached to the spindle 6. A chuck open/close sensor 64 is arranged to detect the open/close state of the chuck and output a signal SC. Further, on the substrate 24 of the bar supply mechanism 16, there is a primary feed forward end detection sensor 66 that detects the forward end of the pressing member 27 and outputs a signal Sd, and a primary feed forward end detection sensor 66 that detects the backward end of the pressing member 27 and outputs a signal Se. The primary feed backward end detection sensor 68 outputs the
A feed arrow forward end detection sensor 70 detects the forward end of the feed arrow 30 and outputs a signal Sf, and a feed arrow forward end detection sensor 70 detects the backward end of the feed arrow 30 and outputs a signal Sf.
A feed arrow backward end detection sensor 72 that outputs g is arranged respectively.

Signals from these various sensors (S a, S c, S d
.

Se, S f, , Sg) are manually input to the control unit 100, and the control unit 100 operates the actuator 54 of the steady rest device 20, the actuator 7 of the chuck 5, and the bar supply mechanism 16 based on these various signals. Electromagnetic clutch 42, 44, motor 17, motor 36 and material shelf 1
The operating signals Si, 5jSSkSSt, Sm5So, and Sn are output to a moving crab unit (not shown) that controls the power of the motor 50 of 8, respectively.

The control flow of the control unit 100 in this example will be described below with reference to FIG. 4.

In the control of this example, the control unit 100 first starts with the signal Sn.
is output to cause the material shelf 18 to perform a new material supply operation, and the bar material W
is supplied from the material shelf 18 to the primary feeding guide rail 26 (St). Next, the signal Sm is output to drive the motor 17.
is activated to shift the guide rail from secondary feeding to primary feeding (S2). Furthermore, a machining state detection sensor 65
The chuck 5 is opened after confirming that the machining of the remaining material W' of the bar material previously machined has been completed by the signal Sa from the machine (33 to S5).

Further, when the control unit 100 confirms that the chuck 5 has been opened based on the signal Sc from the chuck opening/closing sensor 64 (S6, S7), it causes the bar supply section 10 to perform a primary feeding operation. That is, the signal SO is output to rotate the motor 36 in the feeding direction of the bar W, that is, to rotate it in the forward direction (S8
), an electromagnetic clutch 42 for primary feeding by outputting a signal Sk.
(S9), and the pressing member 27 is advanced. When it is detected that the suppression member 27 has reached the forward end by the signal Sd from the primary feed forward end detection sensor 66 (S10.
511), outputs a signal Sk to release the electromagnetic clutch 42 (S12), and closes the steady rest device 20 to release the bar W.
The actuator 5 outputs a signal Si to grip the actuator 5.
4 is activated (S13), and a signal Sj is output to activate the actuator 7, thereby causing the chuck 5 to restrain the bar W (S14).

Next, the control unit 100 outputs a signal Sm to switch the guide rail from primary feeding to secondary feeding.
15) and further sends a signal S to advance the feed arrow 30.
l is output to engage the electromagnetic clutch 44 for secondary feeding (516). After confirming that the feed arrow 30 has reached the forward end due to this secondary feeding operation and the final processing on the bar W has started using the signal Sf from the feed arrow forward end detection sensor 70 (S17.518), control unit 1
00 outputs the signal Sl to release the electromagnetic clutch 44 (S19), and outputs the signal Si to release the bar steady rest device 20 (520).

Next, the signal So is output to rotate the motor 36 in the backward direction, that is, reverse the rotation direction (521), and the signal Sk is output.

Sl is output to re-engage the electromagnetic clutches 42 and 44, and the feed arrow 30 and the pressing member 27 are moved backward (S22). When it is confirmed by the signal Se55g from the primary feed backward end detection sensor 68 and the feed arrow backward end detection sensor 72 that both the pressing member 27 and the feed arrow 30 have reached the backward end due to this operation (S23.524), the control unit 100 completes one cycle of control and moves on to the next cycle.

In this manner, in the automatic bar processing apparatus 2, the bar W is restrained by the chuck 5 of the bar processing section 4 when transitioning from the primary feeding operation to the secondary feeding operation. Therefore, the bar W can be gripped by the chucking member 29 without a restraining process using a dedicated clamp mechanism, and as a result, the time required for transition from the primary feeding operation to the secondary feeding operation can be shortened.

Furthermore, when the feed arrow 30 retreats, the chuck 5 of the bar processing section 4 grips the bar W, allowing the chucking member 29 to release the bar. Therefore, while the final processing of the bar material W is being performed, the retraction operation of the feed arrow 30 and the subsequent operation of supplying new material can be performed. Therefore, unlike conventional automatic bar processing equipment that requires a residual material discharge process using a dedicated clamp mechanism, - the time required from the end of processing one bar to the start of processing the next bar. can be significantly shortened.

Furthermore, since the chuck 5 of the bar processing section 4 carries out these bar restraint processes, the conventionally required clamping mechanism is omitted from the automatic bar processing apparatus 10, thereby improving the efficiency of the automatic bar processing apparatus. It becomes possible to reduce the number of parts.

〔effect〕

The present invention has the following effects with the above configuration.

In the automatic bar processing apparatus according to claim (1), when transitioning from the primary feeding operation to the secondary feeding operation, the chuck mechanism of the bar processing section restrains the bar-shaped material in the length direction.
The secondary feed member can grip the rod-shaped material. Therefore, the time required for transition from the primary feeding operation to the secondary feeding operation can be shortened, thus making it possible to shorten the cycle time of the automatic bar processing apparatus.

Further, in the automatic bar processing apparatus according to claim (2), when the secondary feeding member retreats, the chuck mechanism of the bar processing section restrains the bar-shaped material in the length direction, so that the secondary feeding member Allows bar material to be released from.

Therefore, while the bar-shaped material is being processed, the secondary feeding member can be retreated and the subsequent new material feeding operation can be performed. , the time required until processing of the next bar-shaped material is started can be significantly shortened. In this way, it is possible to shorten the cycle time of automatic bar processing equipment.

Furthermore, in both of the automatic bar processing apparatuses described in claims (1) and (2), the object is to attach or release the bar-shaped material from the secondary feeding member, which has been required in the past. A dedicated clamping mechanism can be omitted, and the configuration of the device can be simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view partially omitted showing an embodiment of an automatic bar processing apparatus according to the present invention. FIGS. 2A to 2E are plan views schematically showing one cycle of operation of the automatic bar processing apparatus shown in FIG. 1. FIG. 3 is a diagram showing a schematic configuration of the control system of the automatic bar processing apparatus, and FIG. 4 is a flowchart showing the control contents of the control unit shown in FIG. 3. 2... Bar processing device, 4... Bar processing section, 5
... Chuck, lO ... Bar supply section, 2
6... Guide rail for primary feeding, 27... Suppressing member, 28... Guide rail for secondary feeding, 29... Chucking member, 30... Feeding arrow, W. ...bar, W'
・・・Remaining material.

Claims (2)

[Claims] (1) A bar processing section having a chuck mechanism that can grip the bar material to be processed; a primary feeding member that advances the bar material by a predetermined amount toward the bar processing section; a bar supplying section having a secondary feeding member that grips the rear end portion of the advanced bar material and further advances the bar material in accordance with the processing in the bar processing section, the primary feeding member inserts the rod-shaped material into the chuck mechanism, and the chuck mechanism is configured such that the secondary feeding member grips the rear end portion of the rod-shaped material at least after the secondary feeding member reaches the rear end of the rod-shaped material. An automatic bar processing device characterized in that the bar-shaped material is restrained in the length direction until it is finished. (2) a bar processing section having a chuck mechanism capable of gripping the bar material to be processed; a primary feeding member that advances the bar material by a predetermined amount toward the bar processing section; a bar supply section having a secondary feeding member that presses the rear end portion of the advanced bar material and further advances the bar material in accordance with the processing of the bar processing section, the chuck mechanism , when the secondary feeding member retreats, the rod-shaped material is restrained in the length direction at least until the secondary feeding member can release the rear end portion of the rod-shaped material. Automatic bar processing equipment.