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Machine tool and standby time changing method

一种待机时间、机床的技术，应用在机床零件、金属加工机械零件、程序控制等方向，能够解决加工精度影响等问题，达到抑制加工精度、缩短循环时间、抑制加工精度的降低的效果

Active Publication Date: 2018-12-11
FANUC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the overtravel after the positioning of the rotary table is large, shortening the standby time may cause the rotary table to be clamped at a position deviated from the target position, thereby affecting machining accuracy.

Method used

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  • Machine tool and standby time changing method
  • Machine tool and standby time changing method
  • Machine tool and standby time changing method

Examples

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Embodiment Construction

[0015] Hereinafter, the machine tool and the standby time changing method of the present invention will be described in detail by citing preferred embodiments with reference to the drawings.

[0016] figure 1 It is a configuration diagram of the machine tool 10 of the embodiment. The machine tool 10 includes a rotary table 12 , a clamp mechanism 14 , a motor 16 , a clamp drive unit 18 , a control unit 20 , and a storage medium 22 .

[0017] The rotary table 12 is a rotary table that supports an object to be processed by the machine tool 10 and is rotatable (rotatable). As the rotary table 12 rotates, the object to be processed also rotates together. The rotary table 12 is provided with a rotation detector 12 a that detects the rotational position and rotational speed of the rotary table 12 . The rotation detection unit 12a is constituted by, for example, an encoder or the like. A detection signal (a signal indicating a rotational position and a rotational speed) detected b...

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Abstract

The invention provides a machine tool and a standby time changing method. The machine tool (10) is equipped with a rotary table (12), and a clamp mechanism (14) which clamps the rotary table (12) in amanner so that the rotary table (12) does not rotate. A clamping operation by the clamp mechanism (14) is started after a standby time (WT) has elapsed from completion of indexing of the rotary table(12). The machine tool (10) further includes a positional deviation calculating unit (36) adapted to calculate a positional deviation ([delta]P) of the rotary table (12) when the clamping operation by the clamp mechanism (14) is completed, and a standby time changing unit (38) adapted to shorten the standby time (WT) in the case that an absolute value of the positional deviation ([delta]P) is less than a threshold value (TH), and to lengthen the standby time (WT) in the case that the absolute value of the positional deviation ([delta]P) is greater than the threshold value (TH).

Description

technical field [0001] The present invention relates to a machine tool for clamping a rotary table after a standby time has elapsed since indexing of the rotary table is completed, and a method for changing the standby time. Background technique [0002] Japanese Patent Application Laid-Open No. 2015-087820 discloses that, in a machine tool provided with a rotary table for setting workpieces, after positioning the rotary table by rotating it to a target position, the rotary table is clamped by a clamping mechanism. workbench. [0003] Here, after the rotary table is rotated to the target position for positioning, the rotary table may rotate due to overtravel. Therefore, the clamping operation may be performed after the standby time has elapsed after the positioning of the rotary table is completed. [0004] Prolonging the standby time is related to prolonging the cycle time. Therefore, in order to shorten the cycle time, it is necessary to shorten the standby time. Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q1/25
CPCB23Q1/25B23Q16/10B23Q16/06G05B19/402G05B2219/49134G05B2219/42213G05B2219/50047B23Q3/08B23Q2220/004
Inventor 手塚博树
Owner FANUC LTD
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