CN201832872U - Servo system operating mechanism of follow-up precise straightening hydraulic machine - Google Patents

Abstract

The utility model discloses a servo system operating mechanism of a follow-up precise straightening hydraulic machine, which is provided with a multilink mechanism driven by a ball screw, forward movement and rearward movement of a valve spool of a servo valve are controlled by the multilink mechanism, and a cylinder controlled by the servo valve drives a press head to move downwards so as to straighten workpieces. The servo system operating mechanism is simple in operation, stable and reliable in transmission and higher in feedback precision, and effectively controls the repeated position of downward movement of the straightening press head to be within 0.05mm.

Description

With the accurate alignment hydraulic press of ejector half servos manipulate mechanism

Technical field:

The utility model relates to a kind of with the accurate alignment hydraulic press of ejector half servos manipulate mechanism.

Background technology:

The operating mechanism of servo-drive system, in conjunction with the accompanying drawings, operating mechanism promptly is that servo valve 10 is controlled, when swinging block 11 bottoms, and the valve core of servo valve reach, oil cylinder (meaning not shown in the figures) epicoele oil-feed by servo valve control, driven plunger and pressure head 15 move downward, and the alignment workpiece promotes to move behind the valve core of servo valve when putting on the swinging block 11, the oil-feed of oil cylinder cavity of resorption, driven plunger and pressure head 15 backhauls.Existing operating mechanism is to control upward the putting of swinging block and the bottom by chain, and its drawback is: take off chain easily, the transmission instability.

Summary of the invention:

For overcoming the defective of prior art, it is a kind of with the accurate alignment hydraulic press of ejector half servos manipulate mechanism that the purpose of this utility model is to provide, and realizes straight-line Position Control by the reaction type mechanical linkage.This mechanism is simple to operate, and stable drive is reliable, and feedback accuracy is higher, has controlled repeatable position that alignment pressure head moves down effectively in 0.05mm.

The utility model technical solution problem adopts following technical scheme:

With the accurate alignment hydraulic press of ejector half servos manipulate mechanism, rotating shaft that the nut of setting and ball-screw connects firmly and first pivoted arm that connects firmly with described rotating shaft, and be provided with the rotational travel of the screw mandrel of described ball-screw is carried out spacing baffle plate, it is characterized in that the top of described long draw hangs with extension spring at the hinged successively lower link bar in the end of described first pivoted arm, second pivoted arm and long draw;

Described long draw is provided with the waist hole, is connected with swing arm with bearing pin in described waist hole, and described swing arm is cross with long draw and is connected; It is hinged that one end and of swing arm is held piece tightly, describedly holds piece tightly and a guide post connects firmly, and described guide post connects firmly and workpiece carried out on the pressure head of alignment, and guide post is located on the frame that supports pressure head by guide rail;

The other end in described swing arm is provided with servo valve, is hinged with a swinging block on described servo valve, and an end of described swinging block contacts with described valve core of servo valve, and the other end of swinging block contacts with the end of described swing arm.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1. simple to operate, convenient, stable drive is reliable; 2. the screw mandrel by the swing roller leading screw can be adjusted the rotational travel of school screw mandrel, and then can trace regulates the descending displacement of pressure head; 3. the descending displacement repeatable accuracy of alignment pressure head is higher; 4. simple in structure, easy for installation.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Number in the figure: 1 handle, 2 ball-screws, 21 nuts, 22 screw mandrels, 3 fixing chutes, 4 baffle plates, 5 first pivoted arms, 6 lower link bars, 7 second pivoted arms, 8 long draws, 9 swing arms, 10 servo valves, 11 swinging blocks, 12 extension springs, 13 guide posts, 14 hold piece tightly, 15 pressure heads, 16 rotating shafts, 17 frames.

Below pass through the specific embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.

The specific embodiment:

Embodiment: in conjunction with Fig. 1, present embodiment with the accurate alignment hydraulic press of ejector half servos manipulate mechanism, the rotating shaft 16 that the nut 21 of setting and ball-screw connects firmly, rotating shaft can be rotated on frame, the rotating shaft 16 and first pivoted arm 5 connect firmly, the hinged long draw 8 in end of hinged second pivoted arm in the end of hinged lower link bar 6, lower link bar 67, the second pivoted arms 7 in the end of first pivoted arm 5, the top of long draw 8 hangs with extension spring 12; Rotational travel for the screw mandrel 22 of controlling ball-screw 2 is provided with arcuate fixed chute 3 in the rotating shaft periphery, and on chute 3 baffle plate 4 is set.

Long draw 8 is provided with the waist hole, is connected with swing arm 9 with bearing pin in the waist hole, and swing arm 9 is cross with long draw 8 and is connected; It is hinged that one end and of swing arm is held piece 14 tightly, describedly holds piece tightly and a guide post 13 connects firmly, and guide post 13 connects firmly workpiece is being carried out on the pressure head 15 of alignment, and guide post 13 is located on the frame 17 that supports pressure head by guide rail;

The other end in described swing arm 9 is provided with servo valve 10, is hinged with a swinging block 11 on servo valve 10, and an end of swinging block contacts with described valve core of servo valve, and the other end of swinging block contacts with the end of described swing arm.

In the work, be fixedly connected with operating grip 1 on the screw mandrel 22, push handle 1 downwards, the nut 21 of ball-screw 2 drives rotating shaft 16 and rotates, and and then drive first pivoted arm 5 and rotate, long draw 8 is descending until driving, and it is descending that long draw drives swing arm 9, and swinging block 11 is to lower swing, the spool reach of servo valve 10, by oil cylinder (meaning not shown in the figures) the epicoele oil-feed of servo valve control, driven plunger and pressure head 15 move downward, the alignment workpiece; Release handle 1, long draw 8 are up and to drive swing arm 9 up under the effect of extension spring 12, compress that pendulum promotes to move behind the valve core of servo valve on the swinging block 11, the oil-feed of oil cylinder cavity of resorption, and an alignment process is finished in driven plunger and pressure head 15 backhauls.

Claims (1)

1. with the accurate alignment hydraulic press of ejector half servos manipulate mechanism, rotating shaft that the nut of setting and ball-screw connects firmly and first pivoted arm that connects firmly with described rotating shaft, and be provided with the rotational travel of the screw mandrel of described ball-screw is carried out spacing baffle plate, it is characterized in that the top of described long draw hangs with extension spring at the hinged successively lower link bar in the end of described first pivoted arm, second pivoted arm and long draw;

Described long draw is provided with the waist hole, is connected with swing arm with bearing pin in described waist hole, and described swing arm is cross with long draw and is connected; It is hinged that one end and of swing arm is held piece tightly, describedly holds piece tightly and a guide post connects firmly, and described guide post connects firmly and workpiece carried out on the pressure head of alignment, and guide post is located on the frame that supports pressure head by guide rail;

The other end in described swing arm is provided with servo valve, is hinged with a swinging block on described servo valve, and an end of described swinging block contacts with described valve core of servo valve, and the other end of swinging block contacts with the end of described swing arm.

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