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Elliptical gear press without crank

A technology of oval gears and presses, applied in presses, stamping machines, manufacturing tools, etc., to achieve the effects of high transmission efficiency, easy adjustment, stable and reliable speed change

Inactive Publication Date: 2003-01-22
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the kinematic characteristic curves of all ordinary mechanical presses are fixed, it is difficult to meet various requirements of different pressure processing such as deep drawing, fine pressing, and hot pressing on the same press.

Method used

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  • Elliptical gear press without crank
  • Elliptical gear press without crank
  • Elliptical gear press without crank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Such as Figure 4 As shown, the present invention makes the variable speed motion characteristic of the elliptical gear due to the change of the included angle α between the elliptical major axis 111 of the passive elliptical gear 11 and the center of rotation 112 of the passive elliptical gear 11 and the center line of the connecting pin 6 mounting hole 113. The superposition position of the curve and the kinematic characteristic curve of the crank slider is different, so that the same press can easily change the kinematic characteristic curve of the slider. The present invention utilizes the change of the distance L between the center of rotation 112 of the passive oval gear 11 and the connecting point 113 of the connecting rod 7, so that the same press can easily change the stroke of the slider. Therefore, the change of these two parameters enables the present invention to be widely used in the field of pressure processing such as deep drawing processing, precision p...

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PUM

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Abstract

The present invention belongs to the field of pressure machining machine tool and proposes a kind of elliptical gear press without crank. The press includes motor, small pulley, drive belt, large pullley, fulcrum, connecting pin, link lever, slide block and frame; and characterizes its driving elliptical gear and drive elliptical gear. Owing to the altering angle between the major axis of driven elliptical gear and the connecting line from the gyratino center of the drive elliptical gear to the connecting pin mounting center and the altering superposing position of variable motion characteristic curve of the elliptical gear and that of crank-block, the block motion characteristic curve of the press may be altered easily. The block stroke of the press may be altered easily.

Description

technical field [0001] The invention belongs to the field of pressure processing machine tools, and relates to a crankless elliptical gear press. Background technique [0002] Ordinary mechanical presses adopt a crank-slider mechanism with a simple structure, which converts the rotational motion of the crankshaft into the reciprocating motion of the press slider. Ordinary mechanical presses such as figure 1 As shown, the motor 1 installed on the frame 9 provides power, the motor 1 is equipped with a small pulley 2, the small pulley 2 transmits power to the large pulley 4 through the transmission belt 3, the large pulley 4, the fulcrum 5 and the crank 12 are fixedly connected with each other, and the crank 12 is driven to rotate by the large pulley 4, the crank 12 is connected with the connecting rod 7 through the connecting pin 6, the connecting rod 7 is connected with the slider 8 through the connecting pin 6', and the crank 12 is connected by the connecting rod 7. Rotati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B1/00
Inventor 李名尧
Owner SHANGHAI UNIV OF ENG SCI
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