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Press machine

A mechanical and pressure technology, applied in the direction of presses, punching machines, forging presses, etc., can solve the problem of inability to adjust the height of the slider, and achieve the effect of good sliding action, reduced wear and smooth action.

Inactive Publication Date: 2008-03-19
KOMATSU LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in a press machine that requires high-precision press processing, if a structure such as the above-mentioned forging press device is adopted in order to reduce the overall height of the press machine, the height of the slider cannot be adjusted, and there is a problem that the press cannot be performed with high precision. processing problem

Method used

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no. 1 approach

[0029] FIG. 1 is an overall view showing a servo press (press machine) 1 according to a first embodiment of the present invention. In FIG. 1 , the left side of the figure is the front of the servo press 1 , and the right side of the figure is the rear of the servo press 1 . As shown in this FIG. 1 , in the servo press 1 , four columnar columns (only two are shown) 2 are erected on the top of the base 3 . A bolster 4 is placed on the form. A crown 6 is provided on the upper part of the column 2 . In addition, the beam 6 , the upright column 2 and the base 3 are fastened and connected in a string-like manner by tie rods 61 . The slider 5 is supported on the beam 6, and a slider driving device 30 for moving the slider 5 up and down (moving up and down) is provided.

[0030] If the slider 5 moves up and down under the action of the slider driving device 30 , the workpiece is press-processed between the lower mold arranged above the backing plate 4 and the upper mold arranged be...

no. 2 approach

[0064] Next, a second embodiment of the present invention will be described. The second embodiment is the same as the first embodiment except that the attachment structure of the rotary ring 34 and the adjustment ring 41 of the servo press 1 of the first embodiment is different from the first embodiment.

[0065] FIG. 6 shows an enlarged view of the slider driving device 30 of the servo press 1 according to the second embodiment. In addition, FIG. 7 shows an enlarged side cross-sectional view of the slider driving device 30 . As shown in these FIGS. 6 and 7 , the rotary ring 34 of the slider driving device 30 is attached to the eccentric drum 333 via a spherical roller bearing (rolling bearing) 343 . In addition, the adjustment ring 41 is attached to the rotary ring 34 via a cylindrical roller bearing (rolling bearing) 344 . In addition, the combination of the spherical roller bearing 343 and the cylindrical roller bearing 344 is adopted in consideration of preventing inclin...

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Abstract

A press machine, wherein a rotary ring (34) having an outer periphery eccentric to an inner periphery is installed on the outer periphery of an eccentric drum (333) on an eccentric shaft (33). An adjusting ring (41) having an outer periphery eccentric to an inner periphery is installed on the outer periphery of the rotary ring (34), and a slide (5) is installed the outer periphery of the adjusting ring (41). Since the slide (5) and a slide drive device (30) are overlappingly disposed at a roughly same height, a distance between the slide drive device (30) and the lower end of the slide (5) can be reduced and the overall height of a servo-press (1) can be reduced. Also, since the height position of the slide (5) can be fine-adjusted by rotating the adjusting ring (41), the press machine can accurately perform press working.

Description

technical field [0001] The present invention relates to a press machine, and more particularly, to a press machine for performing high-precision press processing on, for example, sheet metal or the like. Background technique [0002] Conventionally, as a press machine, there is a forging press device that converts the rotational motion of a crankshaft into the lifting motion of a slide to perform forging (for example, refer to Patent Document 1). The forging pressure device has a swing rod that passes through the crankshaft, and the upper end of the swing rod is supported on the slide block by the shaft rod and can rotate freely. In addition, an arcuate surface centering on the shaft is formed at the lower end of the swing lever, and the slider is disposed in contact with the arcuate surface via a liner. [0003] In this forging press, when the crankshaft rotates, the swing lever swings around the shaft, and at the same time moves the slider up and down. According to this ...

Claims

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Application Information

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IPC IPC(8): B30B15/06B30B1/26
CPCB21J9/18B30B1/266B30B1/263B21J9/02Y10T74/18208
Inventor 马场清和关晴二渡边圣司铃木裕一
Owner KOMATSU LTD
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