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Active vibration-damping device for cutting equipment, and control method thereof

An active vibration reduction and equipment technology, applied in the direction of automatic control devices, feeding devices, metal processing equipment, etc., can solve the problems of unsatisfactory precision and control precision, and achieve the effect of small working stress and improved processing accuracy

Inactive Publication Date: 2007-04-18
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current active damping devices generally have the problem of insufficient control accuracy, which also causes the accuracy of turning processing to be unsatisfactory.

Method used

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  • Active vibration-damping device for cutting equipment, and control method thereof
  • Active vibration-damping device for cutting equipment, and control method thereof
  • Active vibration-damping device for cutting equipment, and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: As shown in the figure, an active damping device for turning equipment includes a high-precision vibration sensor 1, a controller 2, a giant magnetostrictive actuator (GMA) 3 and a tool holder 4, and the head of the tool holder 4 A tool holder fixing seat 5 is provided, and the tool holder 8 is fixedly arranged on the tool holder fixing seat 5. The tool 6 and the tool holder 8 are fixed with nuts 7. The tail of the tool holder 4 is provided with a circular groove 9, and the giant magnetostrictive actuator 3 Set in the cavity formed by the round groove 9 and the semi-cylindrical groove cover 10, the toolholder holder 5 is provided with a vibration-damping groove 52 and a weight-reducing hole 51 parallel to the vibration-damping groove 52, and the toolholder holder 5 A radius R1=20mm is formed between the front end surface and the lower end surface of the tool holder holder 5. The outer fillet of the radius R1=20mm, the bottom of the damping groove 52 is a se...

Embodiment 2

[0030] Embodiment 2: Others are the same as Embodiment 1, the difference is that a radius R1=18mm is formed between the front end surface of the toolholder holder 5 and the lower end surface of the toolholder holder 5, and the bottom of the damping groove 52 Be the semicircular groove of radius R2=7mm, the distance D=18mm between the bottom end of damping groove 52 and the lower end surface of tool holder holder 5, the width B=14mm of weight reducing hole 51, weight reducing hole 51 and vibration damping The wall thickness H between the grooves 52 is 15 mm.

Embodiment 3

[0031] Embodiment 3: Others are the same as Embodiment 1, the difference is that a radius R1=22mm is formed between the front end surface of the toolholder holder 5 and the lower end surface of the toolholder holder 5, and the bottom of the damping groove 52 Be the semicircular groove of radius R2=8mm, the distance D=22mm between the bottom end of damping groove 52 and the lower end surface of tool holder holder 5, the width B=16mm of weight reducing hole 51, weight reducing hole 51 and vibration damping The wall thickness H between the grooves 52 is 13 mm.

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Abstract

An active vibration damper for lathe is composed of an arbor chuck with cutter, a tool carrier with an arbor chuck fixer on its head and an empty cavity in its tail, a super magnetostrictive executor arranged in said empty cavity and with an output rod connected to said arbor chuck, a high-accuracy vibration sensor arranged on arbor chuck, and a controller connected electrically to said vibration sensor and executor. It can play its vibration damping role in the 5-300 rpm range and has a fast response time less than 0.1 S. Its method is also disclosed.

Description

technical field [0001] The invention relates to a vibration damping device for turning equipment, in particular to an active vibration damping device and a vibration damping control method for turning equipment. Background technique [0002] During the lathe cutting process, there are mainly three types of vibration sources that affect the machining accuracy of the lathe. They are random interference from the outside world, the force of the workpiece on the tool module, and the self-excitation of the vibration damping device itself. The main method of controlling cutting vibration at present Including passive control law and active control law. As a traditional vibration control method, the passive control method mainly achieves the purpose of controlling cutting vibration by adding vibration-absorbing components in the system, such as using springs and dampers with fixed parameters to isolate the vibration generated by the vibration source on the machining device, thereby c...

Claims

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Application Information

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IPC IPC(8): B23Q15/007B23Q15/12
Inventor 李国平潘晓彬林君焕
Owner NINGBO UNIV
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