Elastic fixture and attachment method for length measuring apparatus

Abstract

The invention provides a flexible fixing piece of a length measuring device, which is used to install the length measuring device on a device of different expansion coefficient to be measured and capable of flexible deforming in the lengthwise direction of the device to be measured. One end of the flexible fixing piece is fixed on the length measuring device, while the other end is fixed on the device to be measured, and the flexible fixing piece is provided with a sheet metal bending beam. Therefore, the restrictions on the size and accuracy of processing are fewer, and the device is easily manufactured, and can be used in more stringent environmental temperatures like hand operating mechanism, etc. Compared with the parallel plate spring mechanism, the device is smaller and has lower price.

Description

technical field [0001] The invention relates to an elastic fixing member and a fixing method for installing a length measuring device on objects to be measured with different linear expansion coefficients. In particular, it relates to an elastic fixing member of a length measuring device and a fixing method of a length measuring device using the elastic fixing member, and the length measuring device is suitable for a state in which a main scale made of glass is installed in a frame made of aluminum Next, the unit-type linear scale fixed on the iron-based mechanical body can enhance the absorption of thermal stress caused by the difference in linear expansion coefficient. Background technique [0002] As a linear scale for feedback control used in comparatively large machine tools and industrial machines for predicting the generation of vibration and shock, etc., there are known figure 1 The shown multi-point fixed cell-type linear scale (hereinafter simply referred to as a ...

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Problems solved by technology

[0008] However, since the function of the leaf spring having the leaf spring mechanism and the parallel leaf spring mechanism disclosed in JP-A-2003-97936 is highly dependent on the material of the parts and the thicknesses T1 and T2, lengths L1 and L2, etc. of the leaf spring, Therefore, there are restrictions on the size of the parts and the machining accuracy of the parts, and due to the difficulty of manufacturing, there are such as the end fixing block 32. image 3 Difficulty in miniaturization in the cross-sectional direction and cost reduction as a part

[0009] In addition, in the case of a unit-type linear scale for a manual machine that is required to be used in a relatively severe temperature environment, since a spring mechanism is used on it, there is a problem that it is necessary to expand the temperature range and the allowable value of the corresponding length.

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