Wire electric discharge machine including average discharge delay time calculating unit
US-9833853-B2 · Dec 5, 2017 · US
Wire electric discharge machine capable of detecting machining state
US8975554B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8975554-B2 |
| Application number | US-201113151769-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 2, 2011 |
| Priority date | Aug 26, 2010 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A voltage is applied to a machining gap between a wire electrode and a workpiece for a period of one microsecond or less with a quiescent time longer than the duration of voltage application between each two adjacent cycles of voltage application provided, and the number of duty cycles and a machining-gap voltage are detected. An open-circuit state in which electric discharge does not occur after the voltage is applied is identified by the detected machining-gap voltage, and the number of open-circuits is counted. An average machining-gap voltage is obtained based on the numbers of duty cycles and open-circuits and the supply voltage or an average voltage for each duty cycle.
First claim
Opening claim text (preview).
The invention claimed is: 1. A wire electric discharge machine configured to apply a high-frequency voltage to a machining gap between a wire electrode and a workpiece located at a predetermined distance from the wire electrode, thereby generating electric discharge to machine the workpiece, the wire electric discharge machine comprising: a voltage application unit configured to apply a bipolar voltage to the machining gap between the wire electrode and the workpiece for a period…
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US8975554B2 cover?
- A voltage is applied to a machining gap between a wire electrode and a workpiece for a period of one microsecond or less with a quiescent time longer than the duration of voltage application between each two adjacent cycles of voltage application provided, and the number of duty cycles and a machining-gap voltage are detected. An open-circuit state in which electric discharge does not occur aft…
- Who is the assignee on this patent?
- Kawahara Akiyoshi, Murai Masao, Furuta Tomoyuki, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B23H1/022. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).