Linear speed-regulating potentiometer

A potentiometer and speed regulation technology, which is applied in the direction of adjusting electric variables, instruments, control/regulation systems, etc., can solve the problems of low life, poor reliability, etc., achieve low impedance, solve reverse work, and low power consumption signals.

Inactive Publication Date: 2011-06-01
GUILIN MACHINE TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing ordinary machine tool potentiometers have poor reliability and low service life, and provide a linear speed regulating potentiometer with strong anti-interference ability, high reliability and not easy to damage

Method used

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  • Linear speed-regulating potentiometer
  • Linear speed-regulating potentiometer

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Embodiment Construction

[0012] The circuit principle diagram of a linear speed regulating potentiometer used in ordinary machine tools of the present invention is as follows: figure 1 As shown, it is mainly composed of a positive power switch circuit, a negative power switch circuit, a multi-digit digital band switch, a multi-digit digital-to-analog conversion circuit and an output circuit; the above-mentioned power switch circuit and the negative power switch circuit have the same output size and opposite polarity The two output voltages, and the positive power switch circuit is connected to the positive reference level terminal of the output circuit, and the negative power switch circuit is connected to the negative reference level point of the multi-digital-to-analog conversion circuit; The digital-to-analog conversion circuit is connected with the output circuit.

[0013] The negative power switch circuit of the present invention is mainly composed of a first operational amplifier UIA, a low-pass...

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Abstract

The invention discloses a linear speed-regulating potentiometer, which mainly comprises a positive power switch circuit, a negative power switch circuit, a multi-digital band switch, a multi-digital-to-analogue conversion (DAC) circuit and an output circuit. The positive power switch circuit and the negative power switch circuit output voltages with same intensity and opposite polarities; the positive power switch circuit is connected to the positive reference level end of the output circuit; the negative power switch circuit is connected with the negative reference level point of the multi-DAC circuit; and the multi-digital band switch is connected with the output circuit by the multi-DAC circuit. The linear speed-regulating potentiometer is applied to general-purpose machine tools, has the advantages of strong antijamming capability and high reliability, and is difficult to damage.

Description

technical field [0001] The invention relates to the field of machine tool drives, in particular to a linear speed regulating potentiometer applied to ordinary machine tools. Background technique [0002] As we all know, the precise control of the machine tool spindle is very important to improve the machining accuracy and production efficiency of the machine tool. The feed and spindle drive control of ordinary machine tools (non-NC machine tools) are generally realized by speed regulating potentiometers (such as wire wound potentiometers and metal potentiometers), but the reliability and service life of these potentiometers are not ideal. In the after-sales service statistics, among the failures of this type of machine tool, the failure of the potentiometer accounts for 30%. For this reason, the developer intends to replace it with the digital speed control switch widely used in the numerical control system. However, this potentiometer is a binary digital switch, so it need...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H11/12G05F1/46
Inventor 唐建生陶晗林振广冯建国杨武军
Owner GUILIN MACHINE TOOL
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