Hitachi Seiko, Ltd.

Hitachi Via Mechanics Ltd.

Other

Hitachi Seiko Co., Ltd.

Tamio Otani

Yasuhiko Kanaya

Masao Nishigai

Akira Irie

Kunio Arai

Katsuhiro Nagasawa

Tetsuo Murakami

Norio Michigami

Jun Wakamatsu

Yasushi Ito

Hideo Sato

Hiroyuki Kamata

Kunio Saitoh

Tomoaki Ozaki

Kazunori Hamada

Yuzi Obara

Kunio Saitou

Norishige Kumagai

Kazuhiro Kogure

Kouji Yamaura

Masahiro Kawamura

Tadanori Dobashi

Akihiro Matsuya

The invention provides a machining apparatus, and its machining method, having machining tables whose weight do not increase so much even if a number of machining sections such as spindles is increased. One of the machining tables is a rectangular stationary table having a groove in the direction perpendicular to the longitudinal direction on its surface and the other is a rectangular movable table engaged with the groove. The machining apparatus machines a printed circuit board, whose area is larger than that of the movable table, on a mounting surface of the stationary table by changing position of the printed circuit board by moving the movable table and by determining machining position by moving a spindle at position facing the mounting surface of the stationary table.

Machining apparatus and machining method

Nuts are engaged with one ball screw , and the nut is directly fixed on a slider main body . The nut is rotatably held by a bearing , and a bearing holder holding the bearing is fixed on a slider main body . And, a gear is fixed on the side of the nut , and a gear engaging with the gear is provided. And, a motor for driving a gear is fixed on a bracket , being united with the slider main body . The ball screw is stopped and the motor is rotated so as to individually position the slider . Even if the number of the sliders is increased, a machine is not made bigger, and the printed board processing machine having simple structure can be provided.

Printed board processing machine

A printed circuit board working machine includes a spindle which holds a cutting tool and is movable to bring the tool into contact with and away from a printed-circuit board to be worked. A device for pressing down the printed-circuit board comprises a support mechanism associated with the spindle of the working machine for relative movement thereto, a plurality of holding sections movably supported by the mechanism and a driving mechanism for the holding sections. The holding sections are formed with holes of different sizes, respectively. When working operation, after the support mechanism causes the holding sections to move away to a position free from interference with the tool, the driving mechanism moves the holding sections to align one of the through holes, corresponding to a size of the tool to be used, with the tool. Subsequently, the support mechanism returns the holding sections to an initial position and, before the tool reaches the printed-circuit board, brings the corresponding holding section into pressure contact with the printed-circuit board.

Printed-circuit board holding device

Printed circuit board processing apparatus

A method is provided for the confirmation of the diameters of plural drills of different diameters in a PWB working machine in which the drills are interchangeably mounted to perform drilling. The method comprises storing, with respect to each of the drills, data on whether or not the drill has already been used, checking the data of one of the drills upon drill replacement, and measuring the diameter of the drill only where the drill has not previously been used.

Method for the diameter confirmation of drills in a PWB machine

A tool holding device for use in a printed circuit board processing machine is provided with a record which is capable of storing data concerning the states of tools held on the tool holding device and data concerning processing conditions and which enables reading and updating of the recorded content through a communication with an external control device. Necessity for renewal of data registered in the NC device, which has to be executed in the known apparatus each time the tool holding device is exchanged, is eliminated thereby improving the rate of operation of the printed circuit board processing machine. In addition, the present invention enables an easy automatic replacement of tools when the lives of the tools are expired.

Printed circuit board processing machine incorporating tool holding

Printed circuit board presser device in drilling machine

A printed circuit board having a substrate on which circuitry is formed, is spot-faced, by cutting at first the circuitry, and then by spot-facing the substrate up to a desired depth.

Method of spot-facing printed circuit board

A device for exchanging tools for use with a spindle has a tool holding device having a plurality of tool holding members disposed at predetermined intervals. Each tool holding member is supported for movement in its axial direction and is axially driven by a drive device so that a tool is transferred between the tool holding member and the spindle. The invention is also concerned with a tool exchanging method.

Device and method of exchanging tools

An apparatus for taking out printed circuit boards, comprises a pin extracting device for extracting a plurality of pins erectly provided on a workpiece including printed circuit boards and a lower plate both of which are laminated, a reversing device for reversing the workpiece, a lower plate discharging device for discharging the lower plate from the workpiece, and a printed circuit board recovering device for recovering the printed circuit boards. The apparatus is capable of automatically taking out the printed circuit boards from the workpiece discharged from a perforator.

Apparatus for removing printed board

A spot facing method and apparatus for processing a printed circuit board incorporates a sensing device having a sensor probe capable of sensing the level of the surface of a printed circuit board, another sensing device for sensing the position of the end of a tool, measuring circuits for measuring the distance between the sensing probe and the end of the tool and the distance between the surface of the printed circuit board and the end of the tool in accordance with the signals from the sensing devices, and a controller connected to the measuring circuits so as to control the feed of the tool thereby attaining a high dimensional precision in the depthwise direction in the spot facing.

Spot facing method and apparatus for printed circuit board

A printed circuit board boring machine bores printed circuit boards stacked on a table, by a drill while pressing the printed circuit boards with a pressure foot. A piece having a hole through which the drill may pass is detachably mounted on a tip end portion of the pressure foot with a center of the hole being aligned with an axis of the drill. The piece may be attached to the pressure foot before the boring work so that the boards and the piece may be simultaneously bored by the drill while the hole in the piece may be used as a guide for the boring work of the boards.

Printed circuit board boring machine

A tool detecting apparatus including a first detection part having a plurality of arrayed light-receiving elements receiving a beam of light passing around a tool placed in an optical path and a memory circuit for sequentially storing binary signals corresponding to the outputs of the light-receiving elements scanned at a predetermined time interval thereby updating its previous contents, and at least one of a second detection part, third detection part and a fourth detection part. The second detection part includes a state detection circuit and a timing circuit while the third detection part includes a holding circuit and an arithmetic circuit. The fourth detection part includes another arithmetic circuit.

Tool detecting apparatus

A method of machining the contour of a printed circuit board by effecting a relative feed movement between a rotating tool and the other periphery of the printed circuit board. The electrical current value of a drive motor for driving a spindle to which the tool is attached is detected and an operation is conducted for changing the machining condition in such a manner as to reduce the electrical current value of the spindle drive motor and, at the same time, for changing also tool diameter compensation amount to a value corresponding to the machining condition after the change, at every time the detected electrical current value has reached a predetermined current value immediately before tool breakage and repeatedly by a predetermined number of times.

Contour machining method and apparatus for printed circuit board

A work holding device used in an external form cutting machine for printed boards, the cutting machine including a work mounting table movable in X direction and a cutter mounting spindle movable in Y direction perpendicular to X direction, comprising holding device disposed above the table, pushing device for pushing said holding device, elevating device for raising and lowering said holding device. The holding device and the elevating device engage with each other slidably in a vertical direction with the pushing device interposed therebetween. By virtue of these arrangements, the printed boards are surely holded, resulting in an uniform cutting surface of piled printed boards. Holding pins used in prior arts for holding printed boards are not required, resulting in an improved operational efficiency of the cutting machine.

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Hadano, Japan

Tamio Otani