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An Analysis Method of Non-Uniform Motion Curve of Servo Punch Spindle

A motion curve and analysis method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem that the servo motor cannot reach the change of the motor speed change curve, etc., to improve the process adaptability and reduce the signal The effect of processing volume

Active Publication Date: 2017-10-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the existing technology one-sidedly pursues the continuity of the slider displacement curve, so that the servo motor cannot reach the change of the motor speed change curve corresponding to the trajectory planning curve.

Method used

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  • An Analysis Method of Non-Uniform Motion Curve of Servo Punch Spindle
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  • An Analysis Method of Non-Uniform Motion Curve of Servo Punch Spindle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example (1

[0047] Implementation case (1): silent blanking

[0048] Silent blanking is to take the step of stopping the slider for a period of time during the fracture and separation stage of the sheet to control the release speed of the sheet's elastic energy and achieve the purpose of reducing noise. Such as Figure 4 Shown are the conventional motion curve and stroke cycle segment diagram of the slider under this process.

[0049] 1. The geometric characteristic design of the slider movement curve

[0050] 1.1. Analyze user-provided data

[0051] User data: The plate processing thickness is 15 mm; the actual processing time is required to be 1.0 to 1.3 seconds; the stroke of the servo punch slider is 40 mm. According to the data provided by the user, the number of punching can be set to 20 times per minute, and the length of a complete working cycle is 3 seconds.

[0052] 1.2, select the stamping mode

[0053] Set the working mode as the blanking processing mode, namely: fast descent-slow blan...

Embodiment example (2

[0070] Implementation case (2): holding pressure forming

[0071] Pressure-holding forming is a forging-type processing method of sheet metal. The sliding block temporarily stops at the bottom dead center to make the workpiece fully formed, which helps prevent springback. Such as Figure 8 Shown are the conventional motion curve and stroke cycle segment diagram of the slider under this process.

[0072] 1. The geometric characteristic design of the slider movement curve

[0073] 1.1. Analyze user-provided data

[0074] User data: The plate processing thickness is 4 mm; the actual processing time required is 0.9 to 1.1 seconds; the pressure holding time is 0.4 seconds; the stroke of the servo punch slider is 30 mm. According to the data provided by the user, the number of punching can be set to 20 times per minute, and the length of a complete working cycle is 3 seconds.

[0075] 1.2, select the stamping mode

[0076] The set working mode is: fast descent-slow stamping-holding pressure-...

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Abstract

The invention discloses an analysis method related to a main shaft non-uniform motion curve of a servo punching machine, and belongs to the technical field of control and manufacture. The method sequentially includes the geometrical characteristic design step of a slide block motion curve, the segmentation step of the slide block motion curve, the transition modification step for adjacent positions of interval division line segments, the analysis step of the main shaft non-uniform motion curve and the storage step of a process curve and curve fragment data. According to the method, on the basis of motion parameters of key points, basic curve sections meeting the accuracy control requirement are constructed for all section intervals, all the intervals and the line segments are connected through transition curves meeting the process requirement, the curve planning for different parameter requirements can be achieved by regulating the transition intervals on the two sides of the key control points, the analysis operability of the main shaft non-uniform motion curve is improved, and the signal processing amounts of motor control systems between curve sections is decreased.

Description

Technical field [0001] The invention belongs to the technical field of control and manufacturing, and in particular relates to an analysis method for a non-uniform speed motion curve of a servo punch spindle. Background technique [0002] Servo punching machine has changed the characteristics of single crankshaft motion mode of traditional punching machine and poor process adaptability. The slider motion curve can be set freely according to different processing technologies, which helps to increase productivity, improve product forming quality, and realize flexible processing. The main shaft of the servo press here refers to the spindle driven by the servo motor directly or indirectly through the reduction mechanism. The specific form can be a crankshaft, a lead screw, or an eccentric gear shaft. The movement and control of the crankshaft of the punch press directly affects the trajectory of the slider, which is an important factor that determines the quality of the workpiece and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 渠聚鑫夏琴香邵明程秀全
Owner SOUTH CHINA UNIV OF TECH