JPH0318430A - Turret press - Google Patents

Abstract

PURPOSE:To reduce noise and to improve working environment by making a turret disk to mount a die rotatable and composing the turret disk of high damping steel sheet. CONSTITUTION:On the lower frame 1 of a turret press are provided a work table 9, a work clamping device 11 and a lower turret disk 15 to mount plural dies 13. On the upper frame 7 are provided an upper turret disk 19 to mount plural punches 17 and a ram 21. Then, the turret disks 15, 19 to mount the dies 13, 17 are rotatable. These disks 15, 19 are composed of high damping steel sheet. In this way, the working accuracy can be improved and the life of the die can be prolonged.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a turret-type press machine such as a turret-type punch press, and particularly to a turret-type press machine that is improved with respect to vibration and noise. .

(Prior Art) A press machine such as a punch press has a turret disk (turret station) rotatably attached to a frame, a plurality of press molds are attached to the turret disk, and the turret disk A turret-type press machine is known that is configured to select a press die by rotating the press machine and perform a plurality of press operations.

(Problems to be Solved by the Invention) In conventional turret-type press machines, the turret disk is made of cast iron or general steel, and as a result, it vibrates during press punching, and the turret disk itself becomes a source of noise. Also, vibrations from the turret disk are transmitted directly to the frame, which is one of the causes of loud noise.

In view of the above-mentioned problems, an object of the present invention is to provide an improved turret-type press machine in which the turret disk itself produces a damping effect during press punching, thereby reducing vibration and noise. .

[Structure of the Invention] (Means for Solving the Problems) According to the present invention, the present invention has a rotatable turret disk to which a mold is attached, and the turret disk is made of a damping steel plate. This is achieved by a turret-type press machine, which is characterized by:

(Function) According to the above-described configuration, since the turret disk itself is made of a vibration damping steel plate, the turret disk itself performs a vibration damping action, reducing the vibration of the turret disk itself and It becomes more difficult for vibration to be transmitted to the frame.

(Example) Examples of the present invention will be described in detail below with reference to the attached drawings.

FIG. 2 shows a turret-type punch press as an example of a turret-type press machine according to the present invention.

The turret type punch press consists of a lower frame 1 and left and right columns 3 and 5 erected from both sides of the lower frame 1.
and an upper frame 7 provided in such a manner as to span between the left and right columns 3 and 5.

The lower frame 1 is provided with a work table 9, a work clamp device 11, a lower turret disk 15 to which a plurality of dies 13 are attached, and the like.

The upper frame 7 is provided with an upper turret disk 19 to which a plurality of punch chairs are attached, a ram 21, a striker 23 attached to the lower end of the ram 21, a crankshaft 25 for driving the ram, and the like.

FIG. 2 shows the lower turret disc portion of the turret punch press shown in FIG.

The lower turret disk 15 is rotatably mounted around the center axis of the turret shaft 37 via rolling bearings 33 and 35 at bearing sleeves 29 and 31 fixed to the bottom of the lower turret disk 15 by bolts 27. .

The turret shaft 37 is fixed to a mounting bracket 41 with a mounting bolt 39, and the mounting bracket 41 is fixed to the lower frame 1 with a mounting bolt 43.

A sprocket 45 is provided on the outer periphery of the bearing sleeve 29, and the lower turret disk 15 is driven to rotate in divided rotations at a predetermined index angle by a chain (not shown in the figure) that is strung around the sprocket 45. There is.

A plurality of index holes 47 are provided around the outer periphery of the lower turret disk 15 according to the number of stations, and index pins 49 are selectively engaged with the index holes 47 for dividing and positioning the lower turret disk 15. It is designed to match.

An annular disk support member 51 fixed to the lower frame 1 is disposed below the lower turret disk 15, and the lower turret disk 15 rotates while being placed on the disk support member 51. It is designed to be displaced.

A center work table 55 is attached to the center of the lower turret disk 15 by a plurality of legs 53.

The lower turret disk 15 is made up of two steel plates 15A and 15.
The vibration damping steel plate has a laminated structure and includes a viscoelastic resin layer 15C sandwiched between the two steel plates. Since the lower turret disk 15 is fastened and fixed to the two bearing sleeves by bolts 27, when the bolt fastening force acts on the viscoelastic resin layer 15C, the bolt fastening force decreases, and the lower turret disk 15 is partially fastened with the bolts. Since there is a risk that the important parallelism and flatness of the upper surface of the viscoelastic resin layer 15C may be deteriorated, the viscoelastic resin layer 15C may be disposed at a portion where the fastening force of the bolt 27 does not act, as shown in the figure.

The lower turret disk 15 may be made of a single-layer vibration damping steel plate made of a vibration damping alloy or the like, in addition to the laminated damping steel plate described above.

In addition to the lower turret disk 15, the disk support member 51 may also be made of a damping steel plate.

As mentioned above, since the lower turret disk 15 itself is constituted by the vibration damping steel plate, the vibration of the lower turret disk 15 that occurs during punch punching is damped by the vibration damping effect of the vibration damping steel plate, and the lower turret disk 15 during punch punching is damped by the vibration damping effect of the vibration damping steel plate. The vibration of the disk 15 is reduced, and the noise is accordingly reduced. Furthermore, the vibration transmitted from the lower turret disk 15 to the f-section frame 1 is reduced, and the noise caused by the vibration of the lower frame 1 is also reduced.

Further, as in the above-described embodiment, since the disk support member 51 is also constituted by a damping steel plate, the disk support member 51 is lower than the lower turret disk 15.
The vibrations that try to be transmitted to the lower frame 1 through the lower frame 1 are effectively attenuated, the vibrations of the lower frame 1 are further reduced, and a further noise reduction effect can be obtained.

Although the present invention has been described in detail with respect to specific embodiments above, the present invention is not limited thereto.
It will be apparent to those skilled in the art that various embodiments are possible within the scope of the invention.

[Effects of the Invention] As can be understood from the description of the embodiments described above, in a turret type punch press machine such as the turret punch press according to the present invention, the turret disk itself such as the lower turret disk is Because of this structure, the vibration and noise of the turret disc itself during press punching is reduced, and the vibration transmitted from the turret disc to the frame is also reduced, which reduces noise and improves the working environment. become.

Furthermore, by reducing the vibration of the turret disk, machining accuracy is improved and the life of the mold can be extended.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a turret type punch press as an example of a turret type press machine according to the present invention, and FIG. 2 is a longitudinal sectional view showing a lower turret portion of the press machine according to the present invention. 13...Die 15...Lower turret disk 17...One punch...Upper turret disk 21...Ram 23...Striker 39
...Turret shaft 51...Disk support member

Claims (1)

[Claims] A turret-type press machine, characterized in that it has a rotatable turret disk to which a mold is attached, and the turret disk is made of a damping steel plate.