Machining apparatus and machining method

Patent metadata

Field	Value
Publication number	US-11440110-B2
Application number	US-201916690245-A
Country	US
Kind code	B2
Filing date	Nov 21, 2019
Priority date	Jul 9, 2015
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

According to one implementation, a machining apparatus includes an electromotive saw and an attaching structure. The electromotive saw cuts off a workpiece to be machined. The attaching structure attaches the saw to an arm of a robot. Further, according to one implementation, a machining method is provided. In the machining method, a machined product is manufactured by processing a composite material or a honeycomb structure with a cutting tool attached to an arm of a robot. Further, according to one implementation, a machining method is provided. In the machining method, a machined product is manufactured by processing a workpiece to be machined with a cutting tool attached to an arm of a robot. The workpiece is processed along a shape of a jig for setting the workpiece. The workpiece is processed with contacting a guide with the jig. The guide is attached to the arm.

First claim

What is claimed is:

1. A machining method,
wherein a machined product is manufactured by processing a composite material or a honeycomb structure with a cutting tool attached to an arm of a multi-joint robot having a cantilever structure, the composite material or the honeycomb structure being processed with the cutting tool along a shape of a jig for setting the composite material or the honeycomb structure, the composite material or the honeycomb structure being processed by contacting a guide with the jig, the guide being attached to a casing of the cutting tool as to extend from the casing into contact with the jig, and with the casing extending, in multi-joint robot support sequence, between the guide and a support location with the multi-joint robot, the cutting tool being a saw wherein a force applied on the guide from the jig is measured by a sensor, a feedback control of the robot is performed to make the force applied on the guide from the jig constant, wherein the machining method satisfies a tolerance accuracy in the cutting tool machined product of +1.0 mm, and
wherein the feedback control of the robot comprises a control circuit that is configured to receive force values that are applied on the guide from the jig as measured by the sensor, and the feedback control of the robot is configured to achieve a constant force application by directing the force being applied on the guide from the jig to be constant, wherein the constant force application is utilized in providing tolerance accuracy in the cutting tool machined product.

2. The machining method according to claim 1 , wherein the processing is a machining processing, including cutting of the composite material or the honeycomb structure with an electromotive band saw, wire saw, jigsaw or chain saw.

3. The machining method according to claim 2 , wherein the composite material or the honeycomb structure is cut off at an incline by inclining the band saw, the wire saw, the jigsaw or the chain saw by 1 degree to 30 degrees in a direction of a forward movement.

4. The machining method according to claim 1 , wherein a position of the arm is further controlled with a visible sensor.

5. The machining method according to claim 1 , wherein the machining method includes controlled movement of an attachment end of the arm of the robot with a control circuit configured for three axes adjustment of the cutting tool while cutting.

6. The method of claim 1 , further comprising an attachment mechanism joining the arm of the multi joint robot having the cantilever structure to the casing, and said attachment mechanism having first and second attachment implements attached to respective first and second ends of the casing.

7. The method of claim 1 , wherein the arm has plural drive axes, and the sensor comprises a pressure sensor that includes plural sensor elements assigned, respectively, to the plural drive axes.

8. The method of claim 1 , further comprising an attachment mechanism joining the arm of the multi-joint robot having the cantilever structure to the casing, and wherein, in multi joint robot support sequence, there is the attachment end of the cantilever arm attached directly to the attachment mechanism, the attachment mechanism attached directly to the casing at said support location, and the casing attached directly to the guide.

9. The method of claim 8 , wherein the guide has a proximal end attached to the casing and a distal free end, and with the distal free end of the guide being in a male/female intermeshing engagement with the jig.

10. The method of claim 1 , wherein the machining method satisfies a tolerance accuracy in the cutting tool machined product of ±0.1 mm.

11. The method of claim 1 , wherein the guide has a notched recess and a flanged overhang, with the notched recess configured for jig reception, and the flanged overhang being configured for downward pressing on an upper surface of the jig and the notched recess being defined by a surface that assumes a lateral pressing on the jig during the cutting of the workpiece.

12. The method of claim 1 , wherein the cutting tool includes a blade and the multiple-axes of movement freedom in the cantilever structure of the multi-joint arm provides for both a changing in the angle of the blade and a change in cutting direction of the blade during cutting.

13. A machining method, wherein a machined product is manufactured by processing a composite material or a honeycomb structure with a machine assembly comprising a multi-joint robot with a cantilever arm, the cantilever arm comprising an attachment end configured for attachment to a cutting tool, the composite material or the honeycomb structure being processed by contacting a guide with a jig for setting the composite material or the honeycomb structure, the guide being attached to a casing of the cutting tool as to extend from the casing into contact with the jig, and with the casing extending, in multi-joint robot support sequence, between the guide and the attachment end of the cantilever arm, the cutting tool being a saw,
wherein the machining method includes controlled movement of the attachment end of the cantilever arm of the robot such that the attachment end, with attached cutting tool, is adjustable in three dimensional space while the cutting tool is cutting, and wherein a force applied on the guide from the jig is measured by a sensor, and a feedback control of the robot is performed to make the force applied on the guide from the jig constant, and wherein the machining method satisfies a tolerance accuracy in the cutting tool machined product of +1.0 mm, and
wherein the feedback control of the robot comprises a control circuit that is configured to receive force values that are applied on the guide from the jig as measured by the sensor, and the feedback control of the robot is configured to achieve a constant force application by directing the force being applied on the guide from the jig to be constant, wherein the constant force application is utilized in providing tolerance accuracy in the cutting tool machined product.

14. The machining method according to claim 13 , wherein the processing is machining processing, including cutting of the composite material or the honeycomb structure with an electromotive band saw, wire saw, jigsaw or chain saw.

15. The machining method according to claim 14 , wherein the composite material or the honeycomb structure is cut off at an incline by inclining the band saw, the wire saw, the jigsaw or the chain saw by 1 degree to 30 degrees in a direction of a forward movement.

16. The machining method according to claim 13 , wherein a position of the arm is further controlled with a visible sensor.

17. The method of claim 13 , further comprising an attachment mechanism joining the arm of the multi joint robot having the cantilever structure to the casing, and said attachment mechanism having first and second attachment implements attached to respective first and second ends of the casing.

18. The method of claim 13 , wherein the arm has plural drive axes, and the sensor comprises a pressure sensor that includes plural sensor elements assigned, respectively, to the plural drive axes.

19. The method of claim 13 , further comprising an attachment mechanism joining the arm of the multi joint robot having the cantilever structure to the casing, and wherein, in multi joint robot support sequence, there is the attachment end of the cantilever arm attached directly to the attachment mechanism, the attachment mechanism attached directly to the cas

Assignees

• Subaru Corp
• Fuyo Jitsugyo Co Ltd

Inventors

• Ishikawa Yuichi
• Rihei Atsushi
• Matsuo Shinya
• Nakahata Tatsuo
• Nishiwaki Yasuto
• Watanabe Masao
• Yamashita Saichiro
• Miyashita Yasushi

Classifications

• B23D57/0053

  of drives for saw wires; of wheel mountings; of wheels · CPC title

• B23D57/0007

  using saw wires · CPC title

• G05B2219/50167

  Adapting to copying · CPC title

• B64C3/26

  Construction, shape, or attachment of separate skins, e.g. panels · CPC title

• B23D53/00 Primary

  Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting · CPC title