US 11,590,620 B2Granted

Motion control method for dual-spindle machining, dual-spindle machining apparatus and computer program product

AssigneeRenyi Medical Co., Ltd.

InventorsWei-Chih Chien, Meng-Long Lai

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Abstract

The present application discloses a motion control method for dual-spindle machining and a dual-spindle machine apparatus. A control device performs data reconstruction of segmentation and checkpoint setting according to first and second data, respectively, to correspondingly form first and second instruction sequences, thereby simultaneously controlling two motion control cards, allowing two machining devices coupled at a back end of the motion control cards to perform machining on two opposite sides of a workpiece. With the checkpoints arranged in the instruction sequences, the machining devices each having one machining tool are provided with a collaboration mechanism, so that the control device is allowed to continue sending instructions of the next segment to the two motion control cards upon arrival of both the instruction sequences at the checkpoints. Thus, the simultaneous dual-spindle apparatus not only achieves the feature of high efficiency of single-side separate machining but also provides the feature of dual-side collaboration, solving the issue of damage caused by mutual interference during a synchronous dual-spindle operation.

Claims16

Dependent claims

A motion control method for dual-spindle machining, for performing corresponding control on a first machining device and a second machining device on two opposite sides of a workpiece according to first control data and second control data, the first machining device and the second machining device having a first machining tool and a second machining tool moving towards each other in a feed axis so as to perform a machining process on the workpiece;

the motion control method comprising:
a segmentation step of segmenting the first control data into a plurality of first segmented control data, and segmenting the second control data into a plurality of second segmented control data;
a checkpoint setting step of inserting a first checkpoint between each adjacent two of first segmented control data to form a first instruction sequence, and inserting a second checkpoint between each adjacent two of second segmented control data to form a second instruction sequence;
and
a control step of outputting the first instruction sequence to a first motion control card to correspondingly control a first machining device coupled to the first motion control card, and outputting the second instruction sequence to a second motion control card to correspondingly control a second machining device coupled to the second motion control card;
the control step comprising a collaboration mechanism, which stops outputting a subsequent instruction upon arrival of the first instruction sequence or the second instruction sequence output at any checkpoint, and controls the two instruction sequences to continue outputting the subsequent instructions to the corresponding motion control cards only upon arrival of one other instruction sequence at any checkpoint.

3 more elements

A dual-spindle machining apparatus, performing a machining process on a workpiece according to first control data and second control data, the dual-spindle machining apparatus comprising:

a support, for fixing the workpiece;
a first machining device, arranged on one side of the support, and comprising a first machining tool that is moved on a feed axis;
a second machining device, arranged on one other side of the support, and comprising a second machining tool that is moved on the feed axis;
a first motion control card, coupled to the first machining device;
a second motion control card, coupled to the second machining device;
and
a control device, individually coupled to the first motion control card and the second motion control card, the control device is configured to segment the first control data into a plurality of first segmented control data and insert a first checkpoint between individual segmented control data to form a first instruction sequence, and to segment the second control data into a plurality of second segmented control data and insert a second checkpoint between individual segmented control data to form a second instruction sequence;
the control device further configured to sequentially output the first instruction sequence to the first motion control card to correspondingly control a first machining device, and to sequentially output the second instruction sequence to the second motion control card to correspondingly control the second machining device;
wherein, the control device stops outputting a subsequent instruction upon arrival of the output first instruction sequence or second instruction sequence at any checkpoint, and allows the two instruction sequences to continue outputting the subsequent instructions only upon arrival of one other instruction sequence at any checkpoint.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/568,283Filed 4 Jan 2022
Priority: TW 1101008998 Jan 2021
Published: US 2022/0219274 A114 Jul 2022
Granted: 28 Feb 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B23Q 15/12
While the tool acts upon the workpiece: adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned…
G05B 19/19
Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to…
G05B 19/4155
Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to…
G05B 2219/34326
Director, elements to supervisory: program controls two operations simultaneously in opposite directions