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A Crank Angle Virtual Method for Toggle-Joint Servo Press

A servo press, crank angle technology, applied in the direction of presses, stamping machines, manufacturing tools, etc., can solve problems that are difficult to obtain analysis, reverse solve calculation complexity, etc., and achieve the effect of simplifying the difficulty of use

Active Publication Date: 2020-07-24
NANJING ESTUN AUTOMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the complexity of the reverse calculation between the slider displacement and the crank angle of the toggle servo press, and it is difficult to obtain an analytical solution

Method used

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  • A Crank Angle Virtual Method for Toggle-Joint Servo Press
  • A Crank Angle Virtual Method for Toggle-Joint Servo Press
  • A Crank Angle Virtual Method for Toggle-Joint Servo Press

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Embodiment Construction

[0041] Such as figure 1 As shown in the schematic diagram of the transmission structure of the existing crank-link servo press, the crank angle at the bottom dead center of the crank-link servo press with the nodes upright is 180°. The transmission mechanisms of the crank-link servo presses mentioned in this application all refer to the nodes being upright.

[0042] Such as figure 2 As shown, in the transmission mechanism of the toggle servo press of the present application, due to its special mechanical characteristics, the crank angle at the bottom dead center of the toggle servo press is not 180°.

[0043] A crank angle virtual method of a toggle-type servo press disclosed in the present application comprises the following steps:

[0044] Step 1, establish the mathematical model of the crank-slider mechanism of the crank-link servo press, and obtain according to the geometric relationship of the triangle:

[0045] (s-h) 2 = L 2 -(Rsinα) 2

[0046] In the formula, h ...

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Abstract

The invention provides a crank angle virtual method for a toggle rod type servo press machine. The crank angle virtual method comprises the following steps that a mathematical model of crank sliding block mechanisms of the crank connection rod type servo press machine is established; crank angles are solved utilizing sliding block displacements; a function relation between the sliding block displacements and the crank angles is obtained; the approximate value of the crank angles is solved utilizing an iterative method, a corresponding relation table of the sliding block displacements and the crank angles is further established, the crank angles corresponding to all the sliding block displacements are rapidly inquired utilizing the corresponding relation table, and the virtual calculation of the crank angles is realized. By means of the crank angle virtual method for the toggle rod type servo press machine, the mathematical model of relation of the sliding block displacements and the crank angles of the toggle rod type servo press machine is virtualized, the sliding block displacements are taken as the bridge for establishing mapping relation between the crank angles and the crank virtual angles to package the toggle rod type servo press machine, the simplest mathematical model of relation of the sliding block displacements and the crank angles of the toggle rod type servo pressmachine is displayed to machine tool users, so that the use difficulty of the machine tool users is simplified.

Description

technical field [0001] The invention relates to a crank angle virtual method, in particular to a crank angle virtual method of a toggle servo press. Background technique [0002] The transmission structure of the crank-connecting rod servo press is simple, and the development difficulty is small. It is a relatively common press transmission structure in China at present. However, this structure has the disadvantages of long transmission chain and difficult improvement of transmission accuracy. The toggle servo press uses a multi-link transmission method, which is converted into a vertical reciprocating linear motion of the slider through a reduction mechanism (synchronous belt or gear pair), a crank (eccentric wheel), a connecting rod, and a toggle mechanism. Compared with the crank-connecting rod servo press, this kind of transmission structure not only has good low-speed characteristics in the working area, but can better meet the limit requirements of the maximum tensile ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B30B1/14B30B15/14B30B15/26
CPCB30B1/14B30B15/14B30B15/26
Inventor 赵敬毅张圣徐正华吴波
Owner NANJING ESTUN AUTOMATION CO LTD
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