Abstract: An automatic tool exchange system which allows a tool management mode to be arbitrarily selectable between a fixed address scheme and a memory random scheme in operation of the same machining center. The control unit for controlling the respective drive units of the tool exchanger and the magazine includes a storage unit for storing tool information containing a registered correspondence relationship between the tools and corresponding addresses of the stowage parts of the magazine, a modifying unit for modifying the tool information, and a tool exchange instruction unit for sequentially designating the tool to be used in each of the machining steps in accordance with the machining program, and driving the magazine to move the stowage part at the address corresponding to the designated tool to a predetermined position based on the tool information so that the tool is located at the exchange position at a predetermined timing.

Abstract: To provide a clamp device which is designed to shorten a spindle than before, thus enabling the downsizing of a spindle device. In a clamp device for removably mounting a tool holder to a spindle of a rotary spindle device, a clamp mechanism is placed in a clamp state by a reciprocation drive mechanism producing a rearward movement in which a draw-in sleeve (9) engaged therewith via steel balls (13) is moved rearward to bring through-holes (12) thereof to rearward large diameter portion (4d) in a bore region of a spindle body (4) and further rearward to a position where the steel balls (13) are retained between the rearward large diameter portion (4d) and a jig large diameter portion (14a), while the retreated draw-in sleeve (9) moves rearward a draw-in bolt (8) and a clamp sleeve (5) by means of a biasing force of an elastic member (10).

Abstract: An encoder includes an encoder circuit including first and second switches, a first resistor connected in series to the first switch, and a second resistor connected in series to the second switch, the encoder circuit defined by the first switch and the first resistor and the second switch and the second resistor being connected between a power supply voltage and a ground, and a control circuit connected between the first and second resistors and the power supply voltage to turn off power supply from the power supply voltage to the first resistor when the first switch is closed and to turn off power supply from the power supply voltage to the second resistor when the second switch is closed. The control circuit is connected to a first connection point between the first resistor and the first switch and to a second connection point between the second resistor and the second switch.

Abstract: An encoder includes an encoder circuit including first and second switches, a first resistor connected in series to the first switch, and a second resistor connected in series to the second switch, the encoder circuit defined by the first switch and the first resistor and the second switch and the second resistor being connected between a power supply voltage and a ground, and a control circuit connected between the first and second resistors and the power supply voltage to turn off power supply from the power supply voltage to the first resistor when the first switch is closed and to turn off power supply from the power supply voltage to the second resistor when the second switch is closed. The control circuit is connected to a first connection point between the first resistor and the first switch and to a second connection point between the second resistor and the second switch.

Abstract: A plurality of pot support members each for detachably supporting the pot are connected, and an endless track is generated for guiding the pot support members driven by sprocket members. Each of the pot support members is supported with a pair of pins so that the pot support members are connected into a chain-like formation. The pitch between the pair of pins for supporting the pot support member is made substantially equal to the pitch between the pins of the adjacent pot support members so as to allow the resultant track to meander both inward and outward.

Abstract: An automatic tool storing mechanism has a plurality of main magazines, transporting apparatus, and a tool exchanging arm. Each main magazine holds a large number of pots with tools. The transporting apparatus transports the pots with tools one by one between the main magazine and the waiting position close to the main spindle. The tool exchanging arm takes out an unused or preused pot with tool which is waiting at the waiting position and attaches it to the main spindle and also removes the used tool from the main spindle and places it in the pot.

Abstract: A machining center is provided with a guard that covers a processing portion of a machine tool. An openable and closable operation door is provided at the guard front. The operation door is arched along a vertical direction from the guard surface. The operation door is provided with a handle used to open and close the operation door. The operation door is curved on an arched line that reaches a highest point at its center and lowers toward the top and bottom ends. The guard is provided with half-round LED display means protruding from the guard surface. The operation door is made of carbon fiber.

Abstract: An automatic tool storing mechanism has a plurality of main magazine, transporting means, and a tool exchanging arm. Each main magazine holds a large number of pots with tools. The transporting means transports the pots with tools one by one between the main magazine and the waiting position close to the main spindle. The tool exchanging arm takes out an unused or preused pot with tool which is waiting at the waiting position and attaches it to the main spindle and also removes the used tool from the main spindle and places it in the pot.

Abstract: An automatic tool storing mechanism which has a plurality of magazines, a transporting device, and a tool exchanging part. Each magazine holds a number of pots each provided with tools. The transporting device transports tool-mounted pots one by one between the position close to the magazine and the waiting position close to the main spindle. The tool exchanging arm takes out an unused tool from the pot which is waiting at the waiting position and attaches it to the main spindle and also removes the used tool from the main spindle and places it in the pot. (FIG.

Abstract: A rectangular parallelepipedic (cuboidal) work is fixed by clamping the opposing two edges between clamp jaws attached to a pair of clamps. With the work fixed, at least one surface of the work is machined. Then, the position of the work is changed by rotating the clamps and the work all together around the rotating axis, and the other surface is machined. The foregoing step is repeated to machine all the six surfaces of the work, during which the work is kept fixed by clamping.

Abstract: An automatic tool storing mechanism which has a plurality of magazine, transporting means, and a tool exchanging part. Each magazine holds a number of pots each provided with tools. The transporting means transports tool-mounted pots one by one between the position close to the magazine and the waiting position close to the main spindle. The tool exchanging arm takes out an unused tool from the pot which is waiting at the waiting position and attaches it to the main spindle and also removes the used tool from the main spindle and places it in the pot. (FIG.

Abstract: A rectangular parallelepipedic (cuboidal) work is fixed by clamping the opposing two edges between clamp jaws attached to a pair of clamps. With the work fixed, at least one surface of the work is machined. Then, the position of the work is changed by rotating the clamps and the work all together around the rotating axis, and the other surface is machined. The foregoing step is repeated to machine all the six surfaces of the work, during which the work is kept fixed by clamping.

Abstract: A rectangular parallelepipedic (cuboidal) work is fixed by clamping the opposing two edges between clamp jaws attached to a pair of clamps. With the work fixed, at least one surface of the work is machined. Then, the position of the work is changed by rotating the clamps and the work all together around the rotating axis, and the other surface is machined. The foregoing step is repeated to machine all the six surfaces of the work, during which the work is kept fixed by clamping.

Abstract: A rectangular parallelepipedic (cuboidal) work is fixed by clamping the opposing two edges between clamp jaws attached to a pair of clamps. With the work fixed, at least one surface of the work is machined. Then, the position of the work is changed by rotating the clamp means and the work all together around the rotating axis, and the other surface is machined. The foregoing step is repeated to machine all the six surfaces of the work, during which the work is kept fixed by clamping.

Abstract: A method for screening an agent acting on a cell wall, which comprises the following steps of: (1) culturing a microorganism having a reporter protein fixed on a cell wall as a GPI-anchored protein in the presence of a test agent acting on a cell wall; (2) analyzing a saccharide chain of a substance derived from the reporter protein released in a culture fluid of the microorganism; and (3) estimating a targeting site of the test agent on the cell wall on the basis of information of the saccharide chain of the substance derived from the reporter protein obtained in the step (2). An agent acting on a cell wall directed to a particular targeting site can be efficiently screened by conveniently and suitably determining a targeting site of an agent having an inhibitory action on a cell wall.

Abstract: A rotary apparatus comprises a non-rotary part, a rotary shaft, a rotary member between the rotary shaft and the non-rotary part, an inside bearing between the rotary shaft and the rotary member, and an outside bearing between the rotary member and the non-rotary part. The inside bearing comprises first and second inside bearings spaced along a direction of a central axis of the rotary shaft. The outside bearing comprises first and second outside bearings spaced along the rotary shaft. An outer ring of the first inside bearing and an inner ring of the first outside bearing, and an outer ring of the second inside bearing and an inner ring of the second outside bearing, are fixed on the rotary member. By interlocking of the bearings, the rotary member slightly moves along the central axis, and at least two of the bearings receive respective preloads with a linkage relationship.