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Data collection device

A data collection and bearing device technology, applied in the direction of driving device, measuring device, bearing assembly, etc., can solve problems such as excessive preload, increased contact pressure, oil film rupture, etc., to minimize the amount of data collected.

Pending Publication Date: 2022-03-01
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The preload is too large, that is, the contact pressure of the rolling part increases, causing the oil film to break

Method used

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Experimental program
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Embodiment Construction

[0046] Hereinafter, the embodiment of the present disclosure will be described with reference to the drawings. The same or corresponding elements in the following figures have the same reference numerals, and will not be repeated.

[0047] figure 1 It is a data collection device 50 according to the present embodiment (see figure 2 The schematic configuration of the measured spindle device 1 is performed.

[0048] figure 1 The spindle device 1 shown is, for example, a built-in motor type spindle device for a machine. In this case, an electric motor (not shown) is mounted by one end side of the spindle 4 supported by the spindle device 1 supported by the main shaft of the machine, and the other end is connected to a cutting tool such as a terminal milling cutter.

[0049] The spindle device 1 includes a bearing device 30. The bearing device 30 includes a bearing 5 having two bearings 5a and 5b, a spacer 6 and heat flow sensors 11a and 11b that are adjacent to the bearings 5a and 5...

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PUM

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Abstract

The data collection device includes: an input part provided with a detection result (heat flow) of a heat flow sensor provided in a bearing; and a controller configured to collect and store the detection results of the sensor supplied to the input portion within a prescribed sampling period. When the magnitude of the heat flow is smaller than a switching threshold value, the controller sets the sampling period as a first period, and when the magnitude of the heat flow is larger than the switching threshold value, the controller switches the sampling period to a second period shorter than the first period, and judges whether the bearing has an abnormal sign according to the change rate of the heat flow collected in the second period.

Description

Technical field [0001] The present invention relates to a data collection apparatus for collecting data on a mechanical device such as a bearing device. Background technique [0002] Machine spindle shafts often use under high-speed low load, and angular contact ball bearings are widely used in such bearings. Machine spindle bearings are lubricated with air-oil (oil mist) lubrication or grease lubrication. Air-oil lubricity is characterized by providing lubricating oil from the outside, so that a stable lubrication state can be maintained for a long time. The oil lubrication is characterized in that no accessory facilities need to be pipeline thus has excellent cost efficiency, and the incoming amount is extremely friendly. [0003] In a higher speed area, for example, a bearing used in a region of more than 1 million in an area of ​​the inner ring is more than 1 million, such as the bearing used in the main shaft of the machining center between machine tools should operate in a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04F16C19/52F16C19/54F16C35/12F16C41/00
CPCB23Q17/00F16C19/06F16C19/52F16C19/54F16C35/12F16C37/00F16C41/00G01M13/04G01M13/045G01M99/002G01K1/165B23Q5/043F16C41/007F16C2233/00
Inventor 桥爪翔平
Owner NTN CORP