Sliding block deviation correction mechanism of hydraulic press

A hydraulic press and deviation correction technology, applied in the direction of presses, manufacturing tools, etc., can solve the problems of large system flow, complex structure, low precision, etc., and achieve the effect of simple system structure, fast response speed, and reduced energy consumption of the host

Inactive Publication Date: 2012-02-01
HUZHOU MACHINE TOOL WORKS
6 Cites 7 Cited by

AI-Extracted Technical Summary

Problems solved by technology

The above-mentioned structure has high processing precision and complex structure; the functional parts of anti-eccentric load are shared with the main system, the system ...
View more

Method used

Above-mentioned two kinds of schemes are only as preferred, be applicable to on the hydraulic press of single station or multi-station, for large-scale hydraulic press, can adopt three groups, four groups or even more groups of correction cylinders to realize slide block motion process balance and stability in the According to the function of the hydraulic press and the difference in actual use, the present invention also has other various embodiments. Those skilled in the art can make various changes and deformations accordin...
View more

Abstract

The invention discloses a sliding block deviation correction mechanism of a hydraulic press, the center of a sliding block of the hydraulic press is connected with a main oil cylinder controlled by a main hydraulic system, the deviation correction mechanism comprises at least one group of deviation correction cylinders, each group of the deviation correction cylinders comprises a first deviation correction cylinder and a second deviation correction cylinder, and the first deviation correction cylinder and the second deviation correction cylinder are connected on the sliding block according to the symmetrical structure by taking the main oil cylinder as the center; the lower cavity of the first deviation correction cylinder and the upper cavity of the second deviation correction cylinder, as well as the upper cavity of the first deviation correction cylinder and the lower cavity of the second deviation correction cylinder, are respectively communicated through pipelines, and the two pipelines are connected into a proportional servo valve controlled by a controller; and displacement sensors are correspondingly arranged at the parts connected with the deviation correction cylinders on the sliding block, and the controller is used for adjusting the opening degree and the direction of the proportional servo valve according to the displacement comparative value between the two displacement sensors corresponding to the deviation correction cylinders in the same group.

Application Domain

Presses

Technology Topic

Symmetric structureControl theory +1

Image

  • Sliding block deviation correction mechanism of hydraulic press
  • Sliding block deviation correction mechanism of hydraulic press
  • Sliding block deviation correction mechanism of hydraulic press

Examples

  • Experimental program(1)

Example Embodiment

[0017] According to the function and actual use of the hydraulic press, the following two implementation schemes can be selected first:
[0018] Reference figure 1 , A double-cylinder correction mechanism is adopted, which is suitable for the situation where the length of the action surface of the slider 3 is greater than the width. The specific structure: a set of correction cylinders are connected to the slider 3 of the hydraulic press. The first correction cylinder 4 and the second correction cylinder 5 are connected to the left and right ends of the slider 3 in a symmetrical structure with the main cylinder 2 as the center. The lower cavity of the cylinder 4 and the upper cavity of the second correction cylinder 5, the upper cavity of the first correction cylinder 4 and the lower cavity of the second correction cylinder 5 are respectively connected by pipelines, and both pipelines are connected and controlled by the controller The proportional servo valve 6 of the proportional servo valve 6 is connected to the system control valve 8 and the oil pump motor unit 7; the lower cavity and the lower cavity of the first correction cylinder 4 have the same cross-sectional area, and the lower cavity and the lower cavity of the second correction cylinder 5 The cross-sectional area is the same; the first correction cylinder 4 and the second correction cylinder 5 can be connected above or below the slider.
[0019] When the slider moves down quickly, as long as the pipe diameter connected to the correction cylinder is large enough, the proportional servo valve 6 and the oil pump can not work; because there is no load, the slider generally moves down synchronously within the range allowed by the standard;
[0020] When the slider is slowly pressed down, if it is left low and right high after being subjected to an eccentric load, the proportional servo valve 6 changes direction, and the pressure oil enters the lower cavity of the first correction cylinder 4 and the upper cavity of the second correction cylinder 5; The oil in the upper cavity of the first correction cylinder 4 and the lower cavity of the second correction cylinder 5 is connected to zero, which generates a clockwise torque on the slider to keep it in a horizontal state; this process is a dynamic balance process, which depends on displacement. The sensor 9 continuously detects the displacements of the two positions of the slider and compares them. The controller adjusts the opening and direction of the proportional servo valve 6 to keep the hydraulic press in a stable working state.
[0021] When the slider is returning, if there is an additional load, adjust according to the control principle when the slider is slowly pressed down; if there is no load, the slider will return quickly.
[0022] After separating the anti-eccentric load hydraulic control system from the main hydraulic system 1, the system structure is simplified and the response speed is fast; the low-power, low-flow configuration controls large tonnage and large torque, because it supplements the differential flow to achieve anti-eccentric load Features.
[0023] Reference figure 2 , Adopts a four-cylinder correction mechanism, which is suitable for the situation where the length and width of the action surface of the slider 3 are similar. Its specific structure: the slider 3 of the hydraulic press is connected with two sets of correction cylinders, the same group of correction cylinders The first correcting cylinder 4 and the second correcting cylinder 5 are connected to the diagonal ends of the slider 3 in a symmetrical structure with the main oil cylinder 2 as the center, and the rest of the structure is the same as the first embodiment. The four-cylinder correction mechanism, as long as each group of correction cylinders meet the requirements, can determine that the slider remains in a horizontal position. Of course, the slider is rigid.
[0024] Refer to Example 1 for the working principle of the four-cylinder correction mechanism.

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Similar technology patents

Ship liquid tank stability measuring system and measuring method

ActiveCN105270579AReduced data handling and programming effortSimple system structure
Owner:JIANGSU UNIV OF SCI & TECH

Light vector network analyzer based on Sagnac ring

Owner:山东中科际联光电集成技术研究院有限公司

Multi-viewpoint data collection method based on compressive sensing

InactiveCN104735438AReduce the number of camerasSimple system structure
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Classification and recommendation of technical efficacy words

  • quick response
  • Simple system structure
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products