CN2753575Y

CN2753575Y - Offset short connecting-road device for open press

Info

Publication number: CN2753575Y
Application number: CN 200520068353
Authority: CN
Inventors: 哈国鲁
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-15
Filing date: 2005-01-15
Publication date: 2006-01-25
Anticipated expiration: 2015-01-15

Abstract

The utility model relates to an offset short connecting rod device for an open pressing machine, and belongs to a connecting rod device of a crank pressing machine. The center position of a sliding block is connected with a disk connecting rod; the eccentric position of the disk connecting rod is connected with a crankshaft. After adopting the disk connecting rod is adopted, the utility model reduces the height of a machine body, decreases the weight of the whole machine, improves the rigidity of the machine body, and enhances the precision and the work piece precision, and prolongs the service life of a mould. Meanwhile, the motion characteristic of the positive offset minus phase crank sliding block mechanism has the function of rapid return. When the descending stroke angle is bigger than 180 DEG and the return travel angle is less than 180 DEG, the work efficiency is improved. Since the speed is slowed in work and the impact force is reduced, the noise is reduced than a general pressing machine. The descending speed of the connecting rod device is slowed in work, and simultaneously, the utility model reduces the torque of a machine tool and the lateral force of a guide rail, reduces the height of the machine body, slows the speed in work, reduces the impact force, and reduces the working noise and the vibration of the machine.

Description

Biasing short connecting rod device on the gap-framepress

Technical field

The utility model relates to a kind of linkage of crank press, the biasing short connecting rod device on particularly a kind of gap-framepress.

Background technology

The forcing press of home and abroad use now has gap-framepress and straight side press two big classes, because the output pressure of straight side press is relatively large, be to use straight side press more in the separation circuit of blanking, punching to the separation of steel, be connected with slide block by crank at some straight side press upper offset connecting rod, be recorded in [Russia] B, И, in " forging the punching press crank press " book of Fu Lasuofu chief editor, at Russian K2734, K2736 type straight side press, and on the test straight side press of Moscow automobile mechanical institute application is arranged also.On the cold extrusion gap-framepress, all use long connecting rod class offset slider-crank mechanism at present both at home and abroad, gap-framepress has guide rail, on guide rail, be connected with slide block, one end of slide block is connected with crank by long connecting rod, during use, impulsive force is big, and vibrations are big, noise is big, and cause screw to become flexible even break etc. damaged the fault of parts.

Summary of the invention

The purpose of this utility model is will provide a kind of when the steel separation circuit uses, the biasing short connecting rod device on the gap-framepress that impulsive force is little, vibrations are little, noise is little.

The purpose of this utility model is achieved in that in the center of slide block and is connected with the disk connecting rod, is connected with bent axle at the eccentric position of disk connecting rod.

Beneficial effect: owing to adopt such scheme, owing to reduced the fuselage height after adopting the disk connecting rod, make complete machine weight saving, and stiffness of fuselage increases on the contrary, precision improves, and life-span of precision behind the workpiece and mould is all increased.Its kinetic characteristic of positive bias subtractive slider-crank mechanism has the anxious effect of returning simultaneously, be that the backstroke angle can make the work efficiency rate improve less than 180 degree to the downward storke angle greater than 180 degree, because speed reduces during work, impulsive force reduces, thereby noise ratio UP machine reduces, and has reached the purpose of this utility model.Downstream rate during this short connecting rod device work reduces, and has reduced machine torque and guide rail side force simultaneously, has reduced the fuselage height, has improved stiffness of fuselage, and speed reduces during work, and impulsive force reduces, and work noise reduces, and the vibrations of machine also reduce greatly.

Description of drawings

Fig. 1 is a structure chart of the present utility model.

The specific embodiment

Embodiment 1: among the figure, and 1, the crank up central axis, 2, the central axis that moves up and down of slide block, 3, crank, 4, connecting rod, 5, the distance of biasing, 6, the track of crank up, 7, bent axle, 8, the disk connecting rod, 9, slide block, 10, guide rail.

Slide block 9 is installed in the guide rail 10, is connected with disk connecting rod 8 in the center of slide block 9, is connected with bent axle 7 at the eccentric position of disk connecting rod 8.

Bent axle 7 is pressed the rotation of arrow clockwise direction, and the central axis 2 that slide block moves up and down is called positive bias on the right of crank up central axis 1, otherwise is negative bias.Slide block 9 is in the position of convergence bottom dead centre, the bottom dead centre of this mechanism is that disk connecting rod 8 is overlapping with crank 3, crankshaft center is called subtractive to the distance at slide block center for length of connecting rod deducts crank length, traditional forcing press bottom dead centre is when crank becomes a line with connecting rod, crankshaft center for length of connecting rod adds crank length, is called the addition formula to the distance at slide block center.

Claims

1, the biasing short connecting rod device on a kind of gap-framepress comprises guide rail and slide block, it is characterized in that: be connected with the disk connecting rod in the center of slide block, be connected with bent axle at the eccentric position of disk connecting rod.