JPH0584527A - Tapping machine for turret punch press - Google Patents

Abstract

PURPOSE:To easily prepare a working program and to improve productivity and working precision conducting tapping at a punched position. CONSTITUTION:A power transmitting member 6 which can be rotated forwards and backwards by a rotational driving source 7 is mounted in a main body 4 capable of free installation in a die station 3 of an upper turret 1. A slide tube 10 which engages with a master lead screw 4b mounted on the side of this main body 4 and rotates integrally with a power transmitting member 6 is mounted slidably in a power transmitting member 6. A rotational shaft 11 energized by compression springs 12, 13 to the upper and lower directions is mounted in this slide tube 10 so that it rotates integrally with this slide tube 6 and a tap 15 is set freely attachably and detachably through a chuck 14 at the tip of this rotational shaft 11 and tapping can be worked at the punching position. In this way, even a large work can be tapped without reclamping, and productivity and working precision are improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turret punch press tapping device which enables tapping by a turret punch press.

[0002]

2. Description of the Related Art In a conventional turret punch press for punching a plate-shaped work, the punched work may be further tapped. Conventionally, this punching and tapping are performed on different machines,
Since the process is a separate process, work efficiency is poor. In order to improve the above problems, it has been proposed that a turret of a turret punch press is equipped with a tapping device or a turret punch press is installed in the vicinity of the turret so that the turret punch press can perform tapping. For example, Japanese Utility Model Publication No. 1-100623 and Japanese Utility Model Publication No. 1-14922
No. 9 bulletin etc.

[0003]

However, in the conventional tapping device, since the tapping device occupies two stations of the turret, the number of molds that can be mounted on the turret is reduced, and the tap is returned by using an accumulator. Therefore, there is a problem that reliability is low and adjustment is difficult. Also, in the case where a tapping device is provided near the turret, a deviation occurs between the punching position and the tapping position, so a machining program that considers the deviation is required, and the program becomes complicated. In the case of a work that does not reach, it is necessary to re-clamp the work and perform tapping, which causes a problem such as a decrease in productivity and processing accuracy. The present invention has been made for the purpose of improving the above conventional problems, and an object of the present invention is to provide a tapping device for a turret punch capable of tapping at a punching position.

[0004]

In order to achieve the above object, the present invention provides a power transmission member, which is normally and reversely rotated by a rotary drive source, in a main body attachable to a mold station of an upper turret. A slide cylinder, which is screwed to the master lead screw provided on the main body side and rotates integrally with the power transmission member, is slidably provided in the power transmission member, and is vertically attached by a compression spring in the slide cylinder. A biased rotating shaft is provided so as to rotate integrally with the slide cylinder, and a tap is detachably attached to the tip of the rotating shaft via a chuck.

[0005]

[Operation] With the above configuration, tapping can be performed at the punching position, and tapping can be performed simply by mounting the main body on the turret die station. it can.

[0006]

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. In the figure, 1 is an upper turret of a turret punch press, 2 is a lower turret of the turret punch press, which are rotated in synchronization by a rotating mechanism (not shown). Mold stations 3 are formed in the same arrangement. The mold station 3 shown in the figure shows a portion in which an inner track station 3a and an outer track station 3b are provided in the radial directions of the upper and lower turrets 1, 2.

Reference numeral 4 in the drawing denotes a main body of a tapping device mounted on the outer track station 3b of the mold station 3, and a mold mounted on the upper turret 1 (not shown).
The key 5 provided on the upper turret 1 side is fitted in the key groove 4a formed in the lower part so as not to rotate. A power transmission member 6 is rotatably accommodated in the main body 4, and a rotary drive source 7 composed of an electric motor provided at an upper portion of the main body 1 is provided at an upper end of the power transmission member 6 via a speed reducer 8. Connected,
The power transmission member 6 is rotated forward and backward by the rotary drive source 7.

A slide cylinder 10 is provided in the power transmission member 6.
Are accommodated so as to be slidable in the vertical direction. The key 10a provided on the upper portion of the slide cylinder 10 is fitted in the key groove 6a provided in the up-down direction on the inner peripheral surface of the power transmission member 6 so as to rotate together with the power transmission member 6. In addition, a master lead 10b is formed on the outer peripheral surface of the slide cylinder 10 on the lower end side, and the master lead screw 10b is screwed to the master lead screw 4b fixed to the lower inner periphery of the main body 4. ..

On the other hand, a rotary shaft 11 is provided in the slide cylinder 10.
Is housed. The rotating shaft 11 is vertically urged by compression springs 12 and 13 provided on the upper and lower portions of the slide cylinder 10, and is stopped at a position where these compression springs 12 and 13 are in balance with each other. The fixed key 11a is fitted in the key groove 10c formed in the slide cylinder 10 so that the key 11a can move in the vertical direction with respect to the slide cylinder 10. A tap 15 is detachably attached to the lower end of the rotary shaft 11 via a chuck 14.

Further, at the lower part of the main body 4, a processing end detector 17 composed of a reed switch which is operated when the tap 15 advances to the processing end position is installed. The processing end signal detected by the processing end detector 17 is sent to the power supply device 20 provided near the rotary drive source 7 by the lead wire 18 wired along the outer peripheral surface of the main body 4. There is. The power feeding device 20 has a pair of power feeding terminals 20a and 20b for sending power to the rotary drive source 7, and a signal terminal 2 for sending the processing end signal to a control device (not shown).
0c and is connected to the power supply terminals 20d and 20e and the signal terminal 20f which are moved back and forth by the actuator 21, respectively.

The operation will be described below. When tapping the work 23 punched by a die (not shown) at the punching position, first, the upper and lower turrets 1 and 2 are rotated so that the tapping device body 4 is shown in the drawing. Position to punching position as shown. In this state, the actuator 21 advances the power supply terminals 20d, 20e and the signal terminal 20f to move the power supply terminals 20a, 20b on the main body 4 side.
And the connection to the signal terminal 20c, electric power is supplied to the rotary drive source 7 to rotate the rotary drive source 7 forward. The rotation of the rotary drive source 7 is reduced by the speed reducer 8 and transmitted to the power transmission member 6, and the slide cylinder 10 keyed to the power transmission member 6 is connected.
Is rotated.

Since the slide barrel 10 is screwed into the master lead screw 4b on the main body 4 side, the slide barrel 10 is advanced downward as it rotates, whereby the rotary shaft 11 key-connected to the slide barrel 10 also rotates forward. The tap 15 attached to the tip reaches the work 23 and starts tapping the work 23. Further, even if a difference occurs between the forward speed of the slide cylinder 10 and the forward speed of the tap 15 during tap processing, the compression spring 12 that holds the rotating shaft 11 in a floating state,
Since 13 absorbs this, high-precision machining that is not affected by the speed difference becomes possible.

On the other hand, when the tap 15 reaches the machining end position, the machining end detector 17 detects it and sends a machining end signal to the control device, so that the rotary drive source 7 is reversed. As a result, the rotary shaft 11 ascends together with the slide cylinder 10 while reversing, and the tapping process ends. By repeating the above operation, tapping can be performed on the work 23 punched by the die.

[0014]

As described in detail above, according to the present invention, since tapping can be performed at the punching position after punching, a machining program considering the deviation between the punching position and the tapping position becomes unnecessary, and the machining program can be easily created. In addition, since the punching processing range and the tapping processing range are the same, it is possible to perform tapping processing without re-clamping even a large work, and improve productivity and processing accuracy. In addition, the chips generated by tapping can be discharged using the discharge path that discharges the scrap generated by punching, which facilitates chip discharge processing and accommodates the tapping device in one die station. Therefore, the number of molds that can be mounted on the turret is not reduced. Further, since the station used for the mold can be used as it is, the mold can be mounted and used when the tapping device is not used, and the existing turret can be used as it is, so that the operation can be easily and inexpensively performed.

[Brief description of drawings]

FIG. 1 is a sectional view of a tapping device according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Upper turret, 3 ... Mold station, 4 ... Main body, 4
b ... Master lead screw, 6 ... Power transmission member, 7 ... Rotational drive source, 10 ... Slide cylinder, 11 ... Rotation shaft, 12, 13 ...
Compression spring, 14 ... Chuck, 15 ... Tap.

Claims (1)

[Claims] 1. A power transmission member 6 which is normally and reversely rotated by a rotary drive source 7 is provided in a main body 4 which can be mounted on a die station 3 of an upper turret 1, and the main body 4 side is provided in the power transmission member 6. Screwed onto the master lead screw 4b provided on the
Further, a slide cylinder 10 which rotates integrally with the power transmission member 6 is slidably provided, and a rotary shaft 11 urged in the vertical direction by compression springs 12 and 13 in the slide cylinder 10.
Is provided so as to rotate integrally with the slide cylinder 6, and a tap 15 is detachably attached to the tip of the rotary shaft 11 via a chuck 14 for a turret punch press.