JPH09220624A - High speed rotary turret of punch press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To speedily make the upper and lower turret disks and to surely keep the high stopping precision over the long term of working in a turret punch press. SOLUTION: By changing the common driving of a roller chain and a sprocket with a conventional one motor, an upper and a lower turret disks 1, 2 which are individual respectively are composed so as to rotate and drive alone with each single AC servo motor 4 through respective driving and following timing pulleies 6, 7 and a timing belt 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high speed rotating turret of a turret type punch press for sheet metal working, and more particularly to a rotary drive system thereof.

[0002]

2. Description of the Related Art In a conventional numerically controlled turret type punch press as a punching machine for sheet metal work,
The upper turret disc and the lower turret disc of the turret are rotationally driven, respectively, as shown in the side view of the essential part of the example in FIG. It was performed by one AC servo motor.

In FIG. 2, reference numerals 1 and 2 denote the upper and lower turret disks, 11 denotes their central rotation axes, and 12
Is a passive sprocket fixed to the upper / lower part of the central rotating shaft 11, 13 is a roller chain for each turret, 14 is an AC servomotor, 15 is a gear reducer,
Reference numeral 16 is a chain drive shaft that is its output shaft, and 17 is each drive sprocket fixedly mounted on the upper and lower parts thereof. In addition, 5 shows each shot pin for each upper / lower turrets 1, 2.

[0004]

However, in the conventional turret drive structure as described above, since the rotational power transmission of the turret disks 1 and 2 is of the roller chain type, the operating operation is prolonged and Roller chain 1
3 expands, the rotational positioning accuracy of the turret disks 1 and 2 deteriorates, and the rotational force of the drive motor 14 is not smoothly transmitted to the turret due to the dead zone due to the expansion of the chain 13.

Further, because of this, the acceleration and deceleration applied to the roller chain 13 are also restricted, so that the turret rotation speed cannot be increased beyond a certain limit.

The present invention has been made in view of the above situation, and an object thereof is to provide a drive system capable of rotating a turret at a higher speed in order to solve the above problems and improve productivity. I am trying.

[0007]

Therefore, in the present invention, in the rotary turret of the punching press, the upper turret disc and the lower turret disc are independently driven at high speed by the respective motors through the respective timing pulleys and timing belts. It is intended to achieve the above object by being configured to be rotationally driven.

[0008]

With the configuration of the present invention as described above, the turret can maintain a high stop position accuracy even when it is operated for a long period of time, and since the acceleration at the start of turret rotation can be increased, high-speed rotation is possible, The productivity of the punching machine can be improved.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
This will be described in detail based on one embodiment.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (a) is a side view of a main part of a drive mechanism of an embodiment of a high-speed rotating turret according to the present invention, and FIG.
(A) The arrow A direction arrow figure of a figure is shown. Further, FIG. 2 shows a comparison diagram of FIG. 4 showing the specifications of the conventional example of the present embodiment.

(Structure) In FIGS. 1 (a) and 1 (b),
Reference numerals 1 and 2 are independent upper and lower turret disks having coaxial centers. The characteristic of the embodiment of the present invention is that, instead of the common drive of the sprockets 17 and 12 and the roller chain 13 of the conventional example of FIG. Independent upper / lower turret disks 1 and 2 are configured to be rotationally driven by independent AC servomotors 4 via drive / driven timing pulleys 6 and 7, timing belts 8 and speed reducers 3. There are things. In addition, 5 shows each shot pin.

(Operation) With the above-mentioned configuration, unlike the conventional example, the dead zone due to elongation or backlash does not occur even after long-term use, and even a small capacity motor can be used.
Since the turret rotation speed can be nearly doubled, the time required for selecting a punch press die can be shortened, which can contribute to improvement in productivity.

[0013]

As described above, according to the present invention,
Since the upper and lower turret disks of the turret type punch press are driven independently by each drive motor through each timing pulley and timing belt, high position accuracy can be obtained for a long time even at high speed rotation. The productivity of the punch press can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a high-speed rotation turret drive mechanism according to an embodiment.

FIG. 2 is a side view of a main part of a conventional turret drive mechanism.

[Explanation of symbols]

 1 Upper Turret Disc 2 Lower Turret Disc 3 Reducer 4,14 AC Servo Motor 5 Shot Pin 6 Drive Timing Pulley 7 Driven Timing Pulley 8 Timing Belt 11 Center Rotating Shaft 12, 17 Sprocket 13 Roller Chain 15 Gear Reducer 16 Drive Shaft

Claims (1)

[Claims] 1. A rotary turret of a punch press, comprising:
A high-speed rotating turret for a punch press, characterized in that an upper turret disc and a lower turret disc are independently driven to rotate by respective motors through respective timing pulleys and timing belts.