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    • 2. 发明申请
    • GRINDING HEAD WITH FLAP WHEELS
    • WO2021099928A1
    • 2021-05-27
    • PCT/IB2020/060802
    • 2020-11-17
    • SIR S.P.A.
    • PASSONI, Luciano
    • B24B41/00B24B27/00B24B49/10B24B41/04B24D13/04B24D13/16B24D9/00B24B29/00
    • The grinding head (1) with flap wheels that can be used in a machining station (2) of at least one mechanical piece (M), comprises: one basic frame (4) associable with at least one movement device (A) adapted to move the grinding head (1) inside the machining station (2); one operating assembly (5) provided with one gripping and rotation unit (16, 17) of one flap wheel (6) around at least one operational axis (L) for the machining of the mechanical piece (M), in which the operating assembly (5) is associated with the basic frame (4) and movable in rotation in both directions of rotation around one axis of rotation (R), during the machining, between a balance position, wherein the operating assembly (5) and the basic frame (4) are aligned along an axis of equilibrium (E) substantially perpendicular to the axis of rotation (R), and an unbalance position, wherein the operating assembly (5) is rotated relative to the axis of equilibrium (E) by an angle of rotation (a); and bi-directional pneumatic compensation means (10) adapted to counteract the rotation of the operating assembly (5) around the axis of rotation (R) from the balance position to the unbalance position in both directions of rotation.
    • 3. 发明申请
    • GRINDING ELEMENT FOR USE IN ROTARY GRINDING OR POLISHING TOOLS
    • WO2021052548A1
    • 2021-03-25
    • PCT/DK2020/050258
    • 2020-09-18
    • FLEX TRIM A/S
    • LARSEN, KarstenHEDE, Claus Groth
    • B24D13/04B24D13/10B24D13/06B24D11/02B24D11/04
    • Described is a grinding element (1) for use in rotary grinding or polishing tools used for grinding or polishing surfaces, and of the type comprising an elongate profile rail (2), including an abrasive cloth (4) and support brushes (5). The abrasive cloth (4) and the support brushes (5) are mounted in or on the profile rail (2), such that the abrasive cloth (4) is supported by the support brushes (15) on its inactive side (15). The abrasive cloth outside the profile rail (2) has a height (9) in the vertical direction (7) and a length (12) in the longitudinal direction (3). The support brushes (5) and the abrasive cloth (4) have different heights, a support brush height (11) and an abrasive cloth height (9), respectively, from the profile rail (2), such that the abrasive cloth (4) is terminated by an outer exposed edge area (19) extending beyond the top of the support brushes (5) and a short distance down along the outer exposed end portions (10) of the support brushes (5). The outer exposed edge area (19), when used, constitutes an active area (17) of the active side (16) of the abrasive cloth (4). The abrasive cloth (4) is coated only with abrasive material (18) in the active area (17). The abrasive material consists of particles (22) of, for example, diamonds (21) or similar materials. The abrasive cloth (4) is cut from an outer exposed canvas edge (8) toward the profile rail in a direction parallel to the vertical direction (7) in order to form slats (6). The particles are placed in adjacent rows (26), such that the particles (22) of the abrasive material in a row7 (26) are arranged with the particles offset relative to the particles (22) in the adjacent rows (26). The particles in the rows (26) are arranged spaced apart (29), such that an overlap of the abrasive particles occurs in the longitudinal direction (3) of the abrasive canvas.
    • 9. 发明申请
    • ROTARY SANDING TOOL
    • 旋转工具
    • WO2004065063A8
    • 2007-09-07
    • PCT/US2004001182
    • 2004-01-16
    • CONETTA PETER SSABIA MICHAEL
    • CONETTA PETER SSABIA MICHAEL
    • B24D13/04
    • B24D13/045
    • An improved rotary sanding tool (10) is provided. The rotary sanding tool includes a top disc (20), a bottom disc (30) coupled to the top disc, a shaft (40) and a plurality of blade assemblies (60). Each of the blade assemblies includes an annular engagement portion (62) and a plurality of finger portions (64). The plurality of blade assemblies are positioned between the top disc and the bottom disc such that the finger portions of each of blade assembly extends outwardly from peripheries of the top and the bottom discs. In one embodiment, each of the blade assemblies has a curved shape formed in a direction of rotation (110) of the rotary tool. Preferably, the curvature of the blade assemblies is of about a 3.50 inch (8.89 cm) radius.
    • 提供了一种改进的旋转砂磨工具(10)。 旋转砂磨工具包括顶盘(20),联接到顶盘的底盘(30),轴(40)和多个叶片组件(60)。 每个叶片组件包括环形接合部分(62)和多个指状部分(64)。 多个叶片组件定位在顶盘和底盘之间,使得每个叶片组件的指状部分从顶盘和底盘的周边向外延伸。 在一个实施例中,每个叶片组件具有沿旋转工具的旋转方向(110)形成的弯曲形状。 优选地,叶片组件的曲率半径为3.50英寸(8.89cm)。