US 9,339,872 B2Granted

Machining apparatus and deburring device

AssigneeNittan Valve Co., Ltd.

InventorsAtsushi Zenke, Yasunori Oishi

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Abstract

A pair of pinching members pinching a workpiece stem portion, and a deburring tool performing deburring onto the workpiece stem portion pinched by the pair of pinching members are disposed under a pair of guide rails. The deburring tool has a recess so that an opening of the recess faces the other end face of the workpiece stem portion, and is capable of a displacement motion in an axis extension direction of the recess while rotating around the recess axis, and a recess inner circumferential surface is formed so as to reduce its diameter as it goes from the recess opening side toward a recess internal side, and a blade portion is provided on the recess inner circumferential surface. Thereby, it is possible to perform deburring without increasing the machining line length, and prevent abnormal wear of a rubbing stone due to the deburring.

Claims13

Dependent claims

A machining apparatus, on condition that a machining object has a stem portion and an expanded diameter portion which is integrated with one end side of the stem portion, so as to expand its diameter larger than the stem portion, comprising:

a cutting device that cuts the stem portion of the machining object;
a grinding device that grinds the stem portion of the machining object;
and
a pair of carrier members which are disposed so as to extend with a space between the cutting device and the grinding device, the pair of carrier members carry the machining object from the cutting device to the grinding device,
and in which, when the pair of carrier members carry the machining object, the expanded diameter portion of the machining object is made to stride over the pair of carrier members, and the stem portion of the machining object is suspended downward from between the pair of carrier members, the apparatus wherein
a pair of pinching members which pinch the stem portion of the machining object when the machining object is carried to a predetermined machining position on the pair of carrier members, and a deburring tool which is disposed lower than the pair of pinching members, to perform deburring with respect to the stem portion of the machining object pinched by the pair of pinching members are disposed under the pair of carrier members,
the deburring tool has a recess for insertion of the stem portion of the machining object pinched by the pair of pinching members so that an opening of the recess faces the other end face of the stem portion of the machining object, and is capable of a displacement motion in an axis extension direction of the recess while rotating around an axis of the recess,
an inner circumferential surface of the recess in the deburring tool is formed so as to reduce its diameter as an inner diameter of the recess partitioned by the inner circumferential surface of the recess goes from an opening side of the recess toward an internal side of the recess, and
a deburring machining section for performing deburring is provided on the inner circumferential surface of the recess.

6 more elements

A deburring device which is used in a machining apparatus, on condition that a machining object has a stem portion and an expanded diameter portion which is integrated with one end side of the stem portion, so as to expand its diameter larger than the stem portion, comprising:

a cutting device that cuts the stem portion of the machining object;
a grinding device that grinds the stem portion of the machining object;
and
a pair of carrier members which are disposed so as to extend with a space between the cutting device and the grinding device, the pair of carrier members carry the machining object from the cutting device to the grinding device,
and in which, when the pair of carrier members carry the machining object, the expanded diameter portion of the machining object is made to stride over the pair of carrier members, and the stem portion of the machining object is suspended downward from between the pair of carrier members, the deburring device wherein
a pair of pinching members which pinch the stem portion of the machining object when the machining object is carried to a predetermined machining position on the pair of carrier members, and a deburring tool which is disposed lower than the pair of pinching members, to perform deburring with respect to the stem portion of the machining object pinched by the pair of pinching members are disposed under the pair of carrier members,
the deburring tool has a recess for insertion of the stem portion of the machining object pinched by the pair of pinching members so that an opening of the recess faces the other end face of the stem portion of the machining object, and is capable of a displacement motion in an axis extension direction of the recess while rotating around an axis of the recess,
an inner circumferential surface of the recess in the deburring tool is formed so as to reduce its diameter as an inner diameter of the recess partitioned by the inner circumferential surface of the recess goes from an opening side of the recess toward an internal side of the recess, and
a deburring machining section for performing deburring is provided on the inner circumferential surface of the recess.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/421,009Filed 19 Feb 2014
Published: US 2016/0023279 A128 Jan 2016
Granted: 17 May 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

B23B 5/167
For bevelling, chamfering, or deburring the ends of bars or tubes: tools for chamfering the ends of bars or tubes
B23B 5/16
Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor: for bevelling, chamfering, or deburring…
B23P 23/02
Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other…:…
B24B 5/04
Involving centres or chucks for holding work: for grinding cylindrical surfaces externally