Title:
PROCESSING DEVICE, MANUFACTURING METHOD OF COMPONENT, AND MANUFACTURING METHOD OF SPARK PLUG
Document Type and Number:
Japanese Patent JP2018144044
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a processing device capable of reducing variation of the distance from a flange portion to a screw thread in a shaft direction.SOLUTION: The processing device rolls a male thread on a shaft portion of a workpiece having a flange portion extending in a flange shape. A measuring device having a pedestal with a pedestal reference surface to which a workpiece reference surface faces utilize the fluid flowing between the pedestal reference surface and the workpiece reference surface in a situation where the workpiece reference surface faces to the pedestal reference surface, to measure the gap between the pedestal reference surface and the workpiece reference surface in the shaft direction. The dies having a known distance to the pedestal reference surface in the shaft direction rolls the male thread on the shaft portion toward the direction away from the flange portion. An arithmetic device obtains a target position in the shaft direction of the workpiece to be placed on the dies based on the known distance and the measured gap, and a carrying device carries the workpiece to the target position obtained by the arithmetic device.SELECTED DRAWING: Figure 2
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Inventors:
SATO KIMIAKI
KAWANO HAJIME
KAWANO HAJIME
Application Number:
JP2017038131A
Publication Date:
September 20, 2018
Filing Date:
March 01, 2017
Export Citation:
Assignee:
NGK SPARK PLUG CO
International Classes:
B21H3/04; H01T13/20; H01T21/00
Domestic Patent References:
| JP2002143969A | 2002-05-21 | |||
| JP2001284015A | 2001-10-12 | |||
| JP2016215211A | 2016-12-22 | |||
| JP2003323963A | 2003-11-14 | |||
| JP2015087179A | 2015-05-07 | |||
| JPH1123244A | 1999-01-29 |
Foreign References:
| EP1850432A2 | 2007-10-31 | |||
| EP1859432A2 | 2007-11-28 |
Attorney, Agent or Firm:
Patent Service Corporation Shinmei Century