Feeding device and object driving device

Patent metadata

Field	Value
Publication number	US-9481018-B2
Application number	US-201414477592-A
Country	US
Kind code	B2
Filing date	Sep 4, 2014
Priority date	Jul 24, 2014
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

To provide a feeding device capable of driving an object with high accuracy while holding the object and controlling its attitude and capable of improving durability by separating a holding device and a driving device from each other, and an object driving device. The feeding device movably disposed through a cover device to face a work region shielded by the cover device, for holding an object, includes: a first rotary saddle that is rotatable about a first axis; a second rotary saddle disposed on the first rotary saddle and rotatable about a second axis perpendicular to the first axis; a holding device that holds the object; a first driving device disposed outward of the cover device with regarding the work region to rotate the first rotary saddle; and second driving device disposed outward of the cover device with respect to the work region to rotate the second rotary saddle.

First claim

What is claimed is:

1. A feeding device movably disposed through a cover device so as to face a work region shielded by the cover device, for holding an object and controlling an attitude of the object, comprising:
a first rotary saddle that is rotatable about a first axis;
a second rotary saddle that is disposed on the first rotary saddle and rotatable about a second axis in a direction different from the first axis;
a holding device that is disposed on the second rotary saddle to hold the object;
a first driving device that is disposed outward of the cover device with respect to the work region to rotate the first rotary saddle;
a second driving device that is disposed outward of the cover device with respect to the work region to rotate the second rotary saddle,
a feed base that supports the first and second driving devices, the feed base having a hollow portion;
a first transmission shaft that is disposed inside the hollow portion and coupled to the first driving device;
a first reduction gear mechanism that decelerates rotation of the first transmission shaft and outputs the decelerated rotation, the first reduction gear mechanism having a first output shaft formed of a hollow shaft;
a second transmission shaft that is disposed through the first output shaft, the second transmission shaft being disposed parallel to the first axis inside the hollow portion and coupled to the second driving device; and
a second reduction gear mechanism that decelerates rotation of the second transmission shaft and outputs the decelerated rotation, the second reduction gear mechanism having a second output shaft coaxial with the second axis, wherein
the first rotary saddle is fixed to the first output shaft and rotatably journaled to the second transmission shaft, and
the second rotary saddle is fixed to the second output shaft.

2. The feeding device according to claim 1 , wherein the first reduction gear mechanism includes:
a small-diameter gear fixed to the first transmission shaft;
a large-diameter gear having a meshing engagement with the small-diameter gear, the large-diameter gear being disposed coaxially with the second transmission shaft; and
a first reduction gear coaxially coupled to the large-diameter gear for decelerating rotation of the large-diameter gear.

3. The feeding device according to claim 2 ,
wherein the holding device has:
a fluid pressure cylinder that holds the object; and
a fluid supply unit that supplies pressure fluid from a fluid supply source to the fluid pressure cylinder, and

the fluid supply unit includes:
a first fluid supply rotary joint that is disposed on the first rotary saddle;
a second fluid supply rotary joint that is disposed on the second rotary saddle;
a first fluid passage that supplies pressure fluid from the fluid supply source to the first fluid supply rotary joint;
a second fluid passage that supplies pressure fluid from the first fluid supply rotary joint to the second fluid supply rotary joint; and
a third fluid passage that supplies pressure fluid from the second fluid supply rotary joint to the fluid pressure cylinder.

4. An object driving device having the feeding device according to claim 3 , a moving device for movably supporting the feeding device, and a bed for supporting the moving device, the moving device comprising:
a horizontal movement guide mechanism that is placed on the bed;
a moving column that is movably supported by the horizontal movement guide mechanism;
an X-axis driving device that horizontally moves the moving column;
a vertical movement guide mechanism that is disposed on the moving column;
a Z-axis saddle that is movably supported by the vertical movement guide mechanism; and
a longitudinal movement guide mechanism that is disposed on the Z-axis saddle to longitudinally movably support the feeding device,
the moving device being disposed outward of the cover device with respect to the work region.

5. The feeding device according to claim 1 , wherein the first and second transmission shafts are arranged adjacent and parallel to each other, and
the second reduction gear mechanism includes:
a first bevel gear fixed to the second transmission shaft;
a second bevel gear having a meshing engagement with the first bevel gear, the second bevel gear being disposed coaxially with the second axis; and
a second reduction gear coaxially coupled to the second bevel gear for decelerating rotation of the second bevel gear.

6. The feeding device according to claim 5 ,
wherein the holding device has:
a fluid pressure cylinder that holds the object; and
a fluid supply unit that supplies pressure fluid from a fluid supply source to the fluid pressure cylinder, and

the fluid supply unit includes:
a first fluid supply rotary joint that is disposed on the first rotary saddle;
a second fluid supply rotary joint that is disposed on the second rotary saddle;
a first fluid passage that supplies pressure fluid from the fluid supply source to the first fluid supply rotary joint;
a second fluid passage that supplies pressure fluid from the first fluid supply rotary joint to the second fluid supply rotary joint; and
a third fluid passage that supplies pressure fluid from the second fluid supply rotary joint to the fluid pressure cylinder.

7. An object driving device having the feeding device according to claim 6 , a moving device for movably supporting the feeding device, and a bed for supporting the moving device, the moving device comprising:
a horizontal movement guide mechanism that is placed on the bed;
a moving column that is movably supported by the horizontal movement guide mechanism;
an X-axis driving device that horizontally moves the moving column;
a vertical movement guide mechanism that is disposed on the moving column;
a Z-axis saddle that is movably supported by the vertical movement guide mechanism; and
a longitudinal movement guide mechanism that is disposed on the Z-axis saddle to longitudinally movably support the feeding device,
the moving device being disposed outward of the cover device with respect to the work region.

Assignees

• Sugino Mach

Inventors

• Mitsue Toyoaki
• Kawamori Yoshiteru
• Sumiyoshi Toru

Classifications

• B25J21/00

  Chambers provided with manipulation devices (constructional features of the mounting of the manipulator in the wall B25J1/08 {; glove-boxes for nuclear applications G21F7/04}) · CPC title

• F16H3/00

  Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion (speed-changing or reversing mechanisms F16H59/00 - F16H63/00) · CPC title

• B08B13/00 Primary

  Accessories or details of general applicability for machines or apparatus for cleaning · CPC title

• B08B3/102

  with means for agitating the liquid (by agitating the container B08B3/042, B08B3/044, B08B3/045, B08B3/06) · CPC title

• B08B3/024 Primary

  Cleaning by means of spray elements moving over the surface to be cleaned · CPC title