Linear friction-joining device and linear friction-joining method

Patent metadata

Field	Value
Publication number	US-11498154-B2
Application number	US-201816484279-A
Country	US
Kind code	B2
Filing date	Feb 15, 2018
Priority date	Feb 21, 2017
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

The present disclosure provides a linear friction joining device which includes: a pressing device for pressing a second member onto a first member in a pressing direction; a vibrator for relatively vibrating the first member and the second member; a controller which is configured to bring the second member into contact with the first member by a position control, which depends on a measurement result of position sensors, to change the position control to a load control, which depends on a measurement result of load sensors, and to increase a pressing load toward a joining load; and a joining load reaching time adjuster which is configured to adjust a length of a joining load reaching time which is between the time when the position control is changed to the load control and the time when the pressing load reaches the joining load.

First claim

The invention claimed is:

1. A linear friction-joining device comprising:
a pressing device for pressing a second member onto a first member in a pressing direction;
a vibrator for relatively vibrating the first member and the second member;
a position sensor configured to measure a displacement amount of the second member in the pressing direction;
a load sensor configured to measure a pressing load of the second member pressed onto the first member;
a controller configured to bring the second member into contact with the first member by a position control, which depends on a measurement result of the position sensor, to change the position control to a load control, which depends on a measurement result of the load sensor, and to increase the pressing load toward a joining load; and
a joining load reaching time adjuster configured to adjust a length of a joining load reaching time which is between a time when the position control is changed to the load control and a time when the pressing load reaches the joining load,
wherein the joining load reaching time adjuster is configured to adjust the length of the joining load reaching time according to a magnitude of an inertial force acting on the second member during the position control.

2. The linear friction-joining device according to claim 1 ,
wherein the joining load reaching time adjuster is the controller which is configured to set a target load, which is lower than the joining load, before reaching the joining load and to gradually increase the pressing load toward the joining load during the load control.

3. The linear friction-joining device according to claim 1 ,
wherein the joining load reaching time adjuster is the controller which is configured to gradually increase an increasing speed per unit time of the pressing load during the load control.

4. The linear friction-joining device according to claim 1 ,
wherein the pressing device includes a jig on which the second member is loaded and a cylinder device which moves the jig, and
the joining load reaching time adjuster is a spring member interposed between the jig and the cylinder device.

5. The linear friction-joining device according to claim 1 ,
wherein the joining load reaching time adjuster is the controller which is configured to set a target load, which is lower than the joining load, before reaching the joining load and to gradually increase the pressing load toward the joining load during the load control.

6. The linear friction-joining device according to claim 1 ,
wherein the joining load reaching time adjuster is the controller which is configured to gradually increase an increasing speed per unit time of the pressing load during the load control.

Assignees

• Ihi Corp

Inventors

• Fujita Takafumi
• Dodo Yasushi
• Tokue Kazunori

Classifications

• B23K2101/001

  Turbines · CPC title

• B23K20/1205 Primary

  using translation movement · CPC title

• B23K20/12 Primary

  the heat being generated by friction; Friction welding · CPC title

• B23K20/123 Primary

  Controlling or monitoring the welding process · CPC title

• B23K20/1255

  Tools therefor, e.g. characterised by the shape of the probe · CPC title