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Electrical driving system for machine tool

An electric drive, machine tool technology, used in drive devices, metal processing machinery parts, manufacturing tools, etc., can solve problems such as vibration or noise, inability to accurately know the spindle position, and inaccurate engagement of saw teeth.

Active Publication Date: 2021-04-23
瞰夹具有有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the prior art, after executing the spindle operation mode for a certain workpiece and processing the workpiece, the position of the spindle cannot be accurately known when the spindle stops. When the linear movement is switched to the clamping operation mode, the serrations formed in the sawtooth shape of the clutch device may not engage accurately. On the contrary, after the workpiece is clamped in the clamping operation mode, it is switched to the spindle It also happens that the serrations of the sawtooth shape do not engage accurately when operating the mode
In this state, if the main shaft rotates at a high speed, the rotational force of the driving element may not be accurately transmitted to the main shaft through the clutch device, resulting in problems such as vibration or noise and poor processing

Method used

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  • Electrical driving system for machine tool
  • Electrical driving system for machine tool
  • Electrical driving system for machine tool

Examples

Experimental program
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Effect test

no. 1 example

[0033] refer to Figure 1 to Figure 5 , according to the first embodiment of the present invention, the electric drive system includes: a casing 10, which is fixedly arranged on the body of the machine tool; a hollow tube-shaped main shaft 20, which is rotatably arranged on the Inside the casing 10; a driving pulley 40, which is provided on the outside of the main shaft 20 in a rotatable form relative to the main shaft 20; a main shaft motor (not shown), which rotates the driving pulley 40; The inner side moves linearly in the axial direction relative to the main shaft 20 or rotates together with the main shaft 20; the lead screw part 35 and the carrying part 50, which serve as a motion conversion unit, are used to convert the rotational motion of the drive pulley 40 into the forward and backward movement of the draw bar 30 linear motion; a clutch unit configured to be linearly movable in the axial direction but not relatively rotatable with respect to the outside of the main ...

no. 2 example

[0075] Figure 6 to Figure 11 Another embodiment of the electric drive system of the machine tool according to the present invention is shown, in addition to the composition of the clutch unit for selectively connecting the main shaft 20 with the drive pulley 40 and the housing 10, the second embodiment The configuration of the electric drive system is the same as or similar to that of the aforementioned first embodiment, and thus detailed descriptions of the same or similar components are omitted.

[0076] refer to Figure 8, the clutch unit of the electric drive system of this embodiment includes: a fixed member 161, which is arranged on the outside of the main shaft 20 in a non-rotatable form between the front part of the drive pulley 40 and the rear part of the housing 10, and The rear side is formed with sawtooth-shaped first sawtooth 161a along the circumferential direction; a pulley clutch 162, which is provided at the front portion of the drive pulley 40 in a form mov...

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PUM

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Abstract

The present invention relates to an electrical driving system for a machine tool allowing, from a shelf on which an object is machined, the power of a spindle-driving motor to be selectively transmitted, by means of a clutch mechanism, to a rotating system comprising a spindle and a draw bar for driving a chuck, the electrical driving system according to the present invention comprising: a housing; a hollow pipe-shaped spindle disposed inside the housing so as to allow rotating with respect thereto; a driving pulley disposed outside the spindle so as to allow rotating with respect thereto; a spindle motor for rotating the driving pulley; a draw bar moving linearly with respect to or rotating along with the spindle, being disposed inside the spindle to allow linear axial movement but to disallow relative rotational movement with respect thereto; a movement conversion unit for converting the rotational movement of the driving pulley to the forward and backward linear movement of the draw bar; a clutch unit, disposed outside the spindle, for selectively connecting the spindle to the driving pulley or the housing; a location detection unit comprising an encoder connected to the driving pulley to detect the amount and location of the rotation thereof; and a controller for carrying out a location controlling process immediately before the switch from the spindle to clamping operating mode and from the clamping to spindle operating mode, the location controlling process rotating the driving pulley to align the location of the clutch unit on the basis of location data from the clutch unit detected by the location detection unit.

Description

technical field [0001] The present invention relates to a machine tool, and more particularly, to an electric drive system for a machine tool, which can use a clutch device to selectively transmit the power of a motor driving a spindle to a machine tool including a machine tool for driving a chuck in a lathe for processing mechanical products. Rotary system of drawbar and main shaft. Background technique [0002] Generally, a machine tool includes a workpiece and a processing tool. When one of them is fixed, the other rotates to process the shape of the workpiece. According to the rotating part, it can be divided into lathes and milling machines. [0003] A lathe is configured by rotating the workpiece while the processing tool is stopped, and generally includes a chuck for fixing the workpiece, a drawbar for driving the chuck, and rotation of the drawbar, the chuck, and the workpiece the main axis. [0004] Existing lathes require independent drive systems for driving the...

Claims

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Application Information

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IPC IPC(8): B23Q5/04B23Q5/10
CPCB23Q5/10B23B31/16266B23Q2705/005B23B31/26B23B2260/044B23B2270/48B23Q5/043B23B2260/034
Inventor 尹镛善具本生
Owner 瞰夹具有有限公司