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Machine tool and method of correcting displacement of machine tool

A machine tool and displacement technology, applied in the field of thermal displacement, can solve problems such as increasing costs, and achieve the effects of improving machining accuracy, reliable thermal displacement, and reliable estimation

Active Publication Date: 2008-03-26
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the above physical methods have the drawback of increasing the cost

Method used

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  • Machine tool and method of correcting displacement of machine tool
  • Machine tool and method of correcting displacement of machine tool
  • Machine tool and method of correcting displacement of machine tool

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Embodiment Construction

[0059] The present invention will be described in more detail with reference to the accompanying drawings. 1 to 18B show a first embodiment of the present invention. The machine tool according to this embodiment includes a machine tool body (machining center) 11 and a control device 25 (see FIG. 2 ) described later. Referring to FIG. 1 , the structure of the machine tool body 11 is schematically shown. In this embodiment, the X direction refers to the horizontal direction relative to the body 11 , the Y direction refers to the front-to-back direction, and the Z direction refers to the vertical direction. Each axis is controlled according to a three-dimensional (XYZ) coordinate system specific to the machine tool.

[0060] The body 11 of the machine tool includes a base 12, a table 13, a column 14, and a spindle head 15, each serving as a part, as shown in FIGS. 4A to 4E and 6 . The base 12 is installed, for example, on the floor of a factory. A table 13 is mounted on the f...

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PUM

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Abstract

A machine tool and a method of correcting the displacement of the machine tool. The machine tool comprises temperature sensors (28 to 36) installed on a machine tool body (11, 41) at a plurality of positions, a displacement amount detection means (25) detecting the thermal deformation amounts of components (12 to 15) based on measurements by the temperature sensors (28 to 36) and in considerationof the warpages thereof caused due to the temperature changes of their surfaces with large temperature changes and their surfaces positioned on the opposite side thereof, a conversion means (25) converting the thermal displacement amounts of the components (12 to 15) detected by the displacement amount detection means (25) to their axial displacement amounts at working points (P), and a correction means (25) correcting the relative movement amounts on the axes of the components according to the conversion by the conversion means (25).

Description

technical field [0001] The present invention relates to a machine tool that performs machining while moving a tool relative to a workpiece based on machining data and a method of correcting the displacement of the machining tool to correct thermal displacement due to temperature changes of parts constituting the machine tool. Background technique [0002] Machining tools are conventionally provided for drilling, cutting and the like on workpieces composed of, for example, metallic materials. The machine tool is constructed or arranged to perform machining while moving the tool relative to the workpiece according to machining data. FIG. 20 is a side view schematically showing the configuration of the body 1 of the aforementioned type of machine tool. [0003] More specifically, the workpiece W is supported on a table 3 provided on the front portion of the base 2 (on the left side as seen in the figure). A column 4 extending upward is provided on the rear portion of the base...

Claims

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Application Information

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IPC IPC(8): B23Q15/18B23Q17/00G05B19/404
CPCG05B2219/49206B23Q11/0007G05B19/404B23Q15/18B23Q17/00
Inventor 高桥祐幸
Owner BROTHER KOGYO KK
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