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1. 发明公开

EP3819075A1 MACHINING TOOL 审中-公开
公开(公告)号：EP3819075A1
公开(公告)日：2021-05-12
申请号：EP19831371.0
申请日：2019-07-05
申请人： Kato Mfg. Co., Ltd.
发明人： Nguyen Dinh Dinh
IPC分类号： B23Q3/12 , B23B31/107 , B23G1/46
摘要： A machining tool is provided that is capable of performing accurate and stable minute expansion and contraction. The machining tool includes an upper body including a joining section that is configured to be attached to a host device, and a cylindrical part at a lower part thereof; a first spring that is provided to the cylindrical part on an outer periphery wall thereof; a holder body including a projection part around which a second spring is wound, a body part, which constitutes a central portion thereof, and a collet chuck configured to grip a tool at a lower end thereof, the holder body being configured to be removably attached to the cylindrical part of the upper body; a clamp cover configured to cover the first spring, and slidably mounted on an outside of the cylindrical part; at least one steel ball that is configured to be held in a through hole of the cylindrical part, one side of the steel ball facing the body part of the holder body, and the other side of the steel ball facing an inner periphery of the clamp cover; a V-shaped groove provided to an outer periphery wall of the body part to support the steel ball; an inclined surface that is provided to an inner periphery of the clamp cover, configured to be inclined towards an axial direction, so as to support the steel ball; and wherein sliding the clamp cover in the axial direction allows the holder body to be attached to and detached from the upper body with one-touch action.

2. 发明公开

EP4324582A1 MACHINING TOOL 审中-实审
公开(公告)号：EP4324582A1
公开(公告)日：2024-02-21
申请号：EP22928817.0
申请日：2022-08-26
申请人： Kato Mfg. Co., Ltd.
发明人： Nguyen Dinh Dinh
IPC分类号： B23C3/12 , B23D79/00 , B23Q11/00 , B24B41/04
摘要： A machining tool is provided including an upper shaft (1) attached to a host device, through which torque is transmitted; a tilt device (3) connected to a tip of the upper shaft (1) including a fixed yoke (3a) and a tilt yoke (3b), the tilt device (3) further including a pin (3dx) around which the tilt yoke (3b) revolves in one direction and a pin (3dy) around which the tilt yoke (3b) revolves in a direction orthogonal to said one direction; a main drive shaft (4) provided with a tilt plate (7) at its upper end; a holder (5) inserted into a tip of the main drive shaft (4), to which a cutting tool (6) is attached; and a tilt support mechanism (15) contacting the underside of the tilt plate (7) to support the inclined tilt plate (7) with a steel ball (12).

3. 发明公开

EP4316711A1 DEBURRING HOLDER 审中-实审
公开(公告)号：EP4316711A1
公开(公告)日：2024-02-07
申请号：EP22864412.6
申请日：2022-08-26
申请人： Kato Mfg. Co., Ltd.
发明人： Nguyen, Dinh Dinh
IPC分类号： B23C3/12 , B23B31/08 , B23D79/00
摘要： Provided is a deburring holder including multiple compression springs, in which the combination of the compression springs can be changed according to the type of workpiece. The deburring holder includes a main compression spring to receive a load from a deburring tool, a first sub-compression spring to receive a load via a spring-receiving inner cylinder, a second sub-compression spring to receive a load via a spring-receiving outer cylinder, and a step cover. The step cover allows for changing the combination of the compression springs between a state in which only the main compression spring receives the load, a state in which the main compression spring and the first sub-compression spring receive the load in parallel, a state in which the main compression spring and the second sub-compression spring receive the load in parallel, and the main compression spring, the first sub-compression spring, and the second sub-compression spring receive the load in parallel.

4. 发明公开

EP4316713A1 PROCESSING TOOL 审中-实审
公开(公告)号：EP4316713A1
公开(公告)日：2024-02-07
申请号：EP23749752.4
申请日：2023-01-31
申请人： Kato Mfg. Co., Ltd.
发明人： MATSUMOTO, Hirokazu
IPC分类号： B23D79/00 , B23C3/12
摘要： Provided is a machining tool that causes little wear at engaging parts between a main drive shaft (14) and a drive shaft (5). The machining tool includes an upper shaft (6) attached to a host device, a driving shaft (5) inserted into the upper shaft (6), a main drive shaft (14) attached to the head of the driving shaft (5), a holder (15) inserted into the head of the main drive shaft (14), to which a cutting tool (9) is attached, a spherical bearing (4) supporting an outer side of the main drive shaft (14) for the main drive shaft (14) to be tiltable, a center steel ball (7) to be sandwiched between a depression of the head of the drive shaft (5) and an opposite depression of the rear end of the main drive shaft (14), and axial steel balls (10) provided to long grooves (11) on the outer surface of the head of the drive shaft (5) and provided to holes (18) of the main drive shaft (14).

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