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Structure for suppressing column heat deformation in machine tools

A thermal deformation and column technology, applied in the direction of manufacturing tools, metal processing machinery parts, large fixed members, etc., can solve problems such as thermal balance damage, thermal deformation of columns, and poor processing accuracy, and achieve the effect of inhibiting thermal deformation.

Inactive Publication Date: 2012-11-14
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the thermal balance in the front-back direction and the left-right direction of the column is disrupted, and as a result, the column may be thermally deformed.
If thermal deformation of the column occurs, the straightness of the saddle sliding will decrease, which may adversely affect the machining accuracy

Method used

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  • Structure for suppressing column heat deformation in machine tools
  • Structure for suppressing column heat deformation in machine tools
  • Structure for suppressing column heat deformation in machine tools

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0032] like figure 1 and figure 2 As shown, a machine tool 1 that is a horizontal boring machine is provided with a base 11 fixed to a floor F, and a column base 12 is supported on the upper portion of the base 11 so as to be slidable in the horizontal direction. A column 13, which is a hollow structure, is erected on the upper surface of the column base 12, and a pair of left and right guide rails 14a, 14b extending vertically are provided on the front surface of the column 13, that is, a sliding surface 13a. The saddle 15 is slidably supported by the sliding surfaces 13a of the columns 13 and the guide rails 14a, 14b, and in the saddle 15, the main shaft 16 is rotatably supported around a horizontal axis. A tool T is detachably attached to the front end of the spindle 16 , and a workpiece not shown is processed by the tool T. As shown in FIG.

[0033] Upper and lower parts of the saddle 15 are provided with an upper retractable cover (sliding mask) 17 and a lower retracta...

Embodiment 2

[0042] Next, use image 3 and Figure 4 A second embodiment of the present invention will be described in detail. Components that are the same as those described in the first embodiment are denoted by the same reference numerals and repeated descriptions are omitted.

[0043] like image 3 and Figure 4 As shown, a blower 30 and a terminal box 51 are provided on the ground F opposite to the spindle 16 (tool T) of the machine tool 1 , and terminal boxes 52 and 53 are provided on the side of the column base 12 and the side of the column 13 . These terminal boxes 51 to 53 exhaust the supplied air.

[0044] A hose 54 is connected between the blower 30 and the terminal box 51 . Between the terminal boxes 51 , 52 and between the terminal boxes 53 , 54 are connected hoses 55 and connecting pipes 56 in the form of drag chains. And a hose 57 is connected between the terminal box 53 and the saddle 15 . The saddle air supply passage is constituted by the terminal boxes 51 , 52 , 5...

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PUM

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Abstract

Disclosed is a structure for suppressing column heat deformation in machine tools and which can suppress heat deformation of columns without requiring large-scale installation work. To achieve this, the structure is provided with: a saddle (15) for rotatably supporting a main spindle (16) to which a tool (T) is removably attached; a column (13) with a sliding surface (13a) which slidably supports the saddle (15); telescopic covers (17, 18) which expand and contract in accordance with the sliding of the saddle (15) and which are provided on the sliding surface (13a) of the column (13); and a blower (30) which supplies external air to inside the telescopic covers (17, 18).

Description

technical field [0001] The present invention relates to a column thermal deformation suppression structure of a machine tool capable of suppressing thermal deformation of a column. Background technique [0002] Generally, a machine tool such as a horizontal boring machine is provided with a column formed in a hollow structure, and a saddle is slidably supported on the front surface of the column, and the saddle rotatably supports a main shaft. In such a machine tool, in order to protect the sliding surface of the column from cutting chips, cutting water, etc., there is provided a sliding cover such as a retractable cover, a bellows cover, or the like. In addition, the machine tool is affected by the temperature change around the machine tool and the heat generated from the machine tool itself, so the column is designed to have high rigidity so that the column will not be thermally deformed. [0003] As mentioned above, if the machine tool is equipped with a sliding cover, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q1/72B23Q11/12
CPCB23Q11/0825B23Q11/128
Inventor 长谷川智治
Owner MITSUBISHI HEAVY IND LTD